| 1 | /* Zilog (e)Z80-specific support for 32-bit ELF |
| 2 | Copyright (C) 1999-2019 Free Software Foundation, Inc. |
| 3 | (Heavily copied from the S12Z port by Sergey Belyashov (sergey.belyashov@gmail.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, Boston, |
| 20 | MA 02110-1301, USA. */ |
| 21 | |
| 22 | #include "sysdep.h" |
| 23 | #include "bfd.h" |
| 24 | #include "bfdlink.h" |
| 25 | #include "libbfd.h" |
| 26 | #include "elf-bfd.h" |
| 27 | |
| 28 | #include "elf/z80.h" |
| 29 | |
| 30 | /* All users of this file have bfd_octets_per_byte (abfd, sec) == 1. */ |
| 31 | #define OCTETS_PER_BYTE(ABFD, SEC) 1 |
| 32 | |
| 33 | typedef struct { |
| 34 | bfd_reloc_code_real_type r_type; |
| 35 | reloc_howto_type howto; |
| 36 | } bfd_howto_type; |
| 37 | |
| 38 | #define BFD_EMPTY_HOWTO(rt,x) {rt, EMPTY_HOWTO(x)} |
| 39 | #define BFD_HOWTO(rt,a,b,c,d,e,f,g,h,i,j,k,l,m) {rt, HOWTO(a,b,c,d,e,f,g,h,i,j,k,l,m)} |
| 40 | |
| 41 | static bfd_reloc_status_type |
| 42 | z80_elf_16_be_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
| 43 | void *data, asection *input_section, bfd *output_bfd, |
| 44 | char **error_message); |
| 45 | |
| 46 | static const |
| 47 | bfd_howto_type elf_z80_howto_table[] = |
| 48 | { |
| 49 | /* This reloc does nothing. */ |
| 50 | BFD_HOWTO (BFD_RELOC_NONE, |
| 51 | R_Z80_NONE, /* type */ |
| 52 | 0, /* rightshift */ |
| 53 | 3, /* size (0 = byte, 1 = short, 2 = long) */ |
| 54 | 0, /* bitsize */ |
| 55 | FALSE, /* pc_relative */ |
| 56 | 0, /* bitpos */ |
| 57 | complain_overflow_dont,/* complain_on_overflow */ |
| 58 | bfd_elf_generic_reloc, /* special_function */ |
| 59 | "R_NONE", /* name */ |
| 60 | FALSE, /* partial_inplace */ |
| 61 | 0, /* src_mask */ |
| 62 | 0, /* dst_mask */ |
| 63 | FALSE), /* pcrel_offset */ |
| 64 | |
| 65 | /* A 8 bit relocation */ |
| 66 | BFD_HOWTO (BFD_RELOC_8, |
| 67 | R_Z80_8, /* type */ |
| 68 | 0, /* rightshift */ |
| 69 | 0, /* size (0 = byte, 1 = short, 2 = long) */ |
| 70 | 8, /* bitsize */ |
| 71 | FALSE, /* pc_relative */ |
| 72 | 0, /* bitpos */ |
| 73 | complain_overflow_bitfield, /* complain_on_overflow */ |
| 74 | bfd_elf_generic_reloc, /* special_function */ |
| 75 | "r_imm8", /* name */ |
| 76 | FALSE, /* partial_inplace */ |
| 77 | 0x00, /* src_mask */ |
| 78 | 0xff, /* dst_mask */ |
| 79 | FALSE), /* pcrel_offset */ |
| 80 | |
| 81 | /* A 8 bit index register displacement relocation */ |
| 82 | BFD_HOWTO (BFD_RELOC_Z80_DISP8, |
| 83 | R_Z80_8_DIS, /* type */ |
| 84 | 0, /* rightshift */ |
| 85 | 0, /* size (0 = byte, 1 = short, 2 = long) */ |
| 86 | 8, /* bitsize */ |
| 87 | FALSE, /* pc_relative */ |
| 88 | 0, /* bitpos */ |
| 89 | complain_overflow_signed, /* complain_on_overflow */ |
| 90 | bfd_elf_generic_reloc, /* special_function */ |
| 91 | "r_off", /* name */ |
| 92 | FALSE, /* partial_inplace */ |
| 93 | 0x00, /* src_mask */ |
| 94 | 0xff, /* dst_mask */ |
| 95 | FALSE), /* pcrel_offset */ |
| 96 | |
| 97 | /* A 8 bit PC-rel relocation */ |
| 98 | BFD_HOWTO (BFD_RELOC_8_PCREL, |
| 99 | R_Z80_8_PCREL, /* type */ |
| 100 | 0, /* rightshift */ |
| 101 | 0, /* size (0 = byte, 1 = short, 2 = long) */ |
| 102 | 8, /* bitsize */ |
| 103 | TRUE, /* pc_relative */ |
| 104 | 0, /* bitpos */ |
| 105 | complain_overflow_signed, /* complain_on_overflow */ |
| 106 | bfd_elf_generic_reloc, /* special_function */ |
| 107 | "r_jr", /* name */ |
| 108 | FALSE, /* partial_inplace */ |
| 109 | 0x00, /* src_mask */ |
| 110 | 0xff, /* dst_mask */ |
| 111 | TRUE), /* pcrel_offset */ |
| 112 | |
| 113 | /* An 16 bit absolute relocation */ |
| 114 | BFD_HOWTO (BFD_RELOC_16, |
| 115 | R_Z80_16, /* type */ |
| 116 | 0, /* rightshift */ |
| 117 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
| 118 | 16, /* bitsize */ |
| 119 | FALSE, /* pc_relative */ |
| 120 | 0, /* bitpos */ |
| 121 | complain_overflow_bitfield, /* complain_on_overflow */ |
| 122 | bfd_elf_generic_reloc, /* special_function */ |
| 123 | "r_imm16", /* name */ |
| 124 | FALSE, /* partial_inplace */ |
| 125 | 0x00000000, /* src_mask */ |
| 126 | 0x0000ffff, /* dst_mask */ |
| 127 | FALSE), /* pcrel_offset */ |
| 128 | |
| 129 | /* A 24 bit absolute relocation emitted by ADL mode operands */ |
| 130 | BFD_HOWTO (BFD_RELOC_24, |
| 131 | R_Z80_24, /* type */ |
| 132 | 0, /* rightshift */ |
| 133 | 5, /* size (0 = byte, 1 = short, 2 = long) */ |
| 134 | 24, /* bitsize */ |
| 135 | FALSE, /* pc_relative */ |
| 136 | 0, /* bitpos */ |
| 137 | complain_overflow_bitfield, /* complain_on_overflow */ |
| 138 | bfd_elf_generic_reloc, /* special_function */ |
| 139 | "r_imm24", /* name */ |
| 140 | FALSE, /* partial_inplace */ |
| 141 | 0x00000000, /* src_mask */ |
| 142 | 0x00ffffff, /* dst_mask */ |
| 143 | FALSE), /* pcrel_offset */ |
| 144 | |
| 145 | BFD_HOWTO (BFD_RELOC_32, |
| 146 | R_Z80_32, /* type */ |
| 147 | 0, /* rightshift */ |
| 148 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 149 | 32, /* bitsize */ |
| 150 | FALSE, /* pc_relative */ |
| 151 | 0, /* bitpos */ |
| 152 | complain_overflow_dont,/* complain_on_overflow */ |
| 153 | bfd_elf_generic_reloc, /* special_function */ |
| 154 | "r_imm32", /* name */ |
| 155 | FALSE, /* partial_inplace */ |
| 156 | 0x00000000, /* src_mask */ |
| 157 | 0xffffffff, /* dst_mask */ |
| 158 | FALSE), /* pcrel_offset */ |
| 159 | |
| 160 | /* First (lowest) 8 bits of multibyte relocation */ |
| 161 | BFD_HOWTO (BFD_RELOC_Z80_BYTE0, |
| 162 | R_Z80_BYTE0, /* type */ |
| 163 | 0, /* rightshift */ |
| 164 | 0, /* size (0 = byte, 1 = short, 2 = long) */ |
| 165 | 32, /* bitsize */ |
| 166 | FALSE, /* pc_relative */ |
| 167 | 0, /* bitpos */ |
| 168 | complain_overflow_dont,/* complain_on_overflow */ |
| 169 | bfd_elf_generic_reloc, /* special_function */ |
| 170 | "r_byte0", /* name */ |
| 171 | FALSE, /* partial_inplace */ |
| 172 | 0, /* src_mask */ |
| 173 | 0xff, /* dst_mask */ |
| 174 | FALSE), /* pcrel_offset */ |
| 175 | |
| 176 | /* Second 8 bits of multibyte relocation */ |
| 177 | BFD_HOWTO (BFD_RELOC_Z80_BYTE1, |
| 178 | R_Z80_BYTE1, /* type */ |
| 179 | 8, /* rightshift */ |
| 180 | 0, /* size (0 = byte, 1 = short, 2 = long) */ |
| 181 | 32, /* bitsize */ |
| 182 | FALSE, /* pc_relative */ |
| 183 | 0, /* bitpos */ |
| 184 | complain_overflow_dont,/* complain_on_overflow */ |
| 185 | bfd_elf_generic_reloc, /* special_function */ |
| 186 | "r_byte1", /* name */ |
| 187 | FALSE, /* partial_inplace */ |
| 188 | 0, /* src_mask */ |
| 189 | 0xff, /* dst_mask */ |
| 190 | FALSE), /* pcrel_offset */ |
| 191 | |
| 192 | /* Third 8 bits of multibyte relocation */ |
| 193 | BFD_HOWTO (BFD_RELOC_Z80_BYTE2, |
| 194 | R_Z80_BYTE2, /* type */ |
| 195 | 16, /* rightshift */ |
| 196 | 0, /* size (0 = byte, 1 = short, 2 = long) */ |
| 197 | 32, /* bitsize */ |
| 198 | FALSE, /* pc_relative */ |
| 199 | 0, /* bitpos */ |
| 200 | complain_overflow_dont,/* complain_on_overflow */ |
| 201 | bfd_elf_generic_reloc, /* special_function */ |
| 202 | "r_byte2", /* name */ |
| 203 | FALSE, /* partial_inplace */ |
| 204 | 0, /* src_mask */ |
| 205 | 0xff, /* dst_mask */ |
| 206 | FALSE), /* pcrel_offset */ |
| 207 | |
| 208 | /* Fourth (highest) 8 bits of multibyte relocation */ |
| 209 | BFD_HOWTO (BFD_RELOC_Z80_BYTE3, |
| 210 | R_Z80_BYTE3, /* type */ |
| 211 | 24, /* rightshift */ |
| 212 | 0, /* size (0 = byte, 1 = short, 2 = long) */ |
| 213 | 32, /* bitsize */ |
| 214 | FALSE, /* pc_relative */ |
| 215 | 0, /* bitpos */ |
| 216 | complain_overflow_dont,/* complain_on_overflow */ |
| 217 | bfd_elf_generic_reloc, /* special_function */ |
| 218 | "r_byte3", /* name */ |
| 219 | FALSE, /* partial_inplace */ |
| 220 | 0, /* src_mask */ |
| 221 | 0xff, /* dst_mask */ |
| 222 | FALSE), /* pcrel_offset */ |
| 223 | |
| 224 | /* An 16 bit absolute relocation of lower word of multibyte value */ |
| 225 | BFD_HOWTO (BFD_RELOC_Z80_WORD0, |
| 226 | R_Z80_WORD0, /* type */ |
| 227 | 0, /* rightshift */ |
| 228 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
| 229 | 32, /* bitsize */ |
| 230 | FALSE, /* pc_relative */ |
| 231 | 0, /* bitpos */ |
| 232 | complain_overflow_dont,/* complain_on_overflow */ |
| 233 | bfd_elf_generic_reloc, /* special_function */ |
| 234 | "r_word0", /* name */ |
| 235 | FALSE, /* partial_inplace */ |
| 236 | 0, /* src_mask */ |
| 237 | 0xffff, /* dst_mask */ |
| 238 | FALSE), /* pcrel_offset */ |
| 239 | |
| 240 | /* An 16 bit absolute relocation of higher word of multibyte value */ |
| 241 | BFD_HOWTO (BFD_RELOC_Z80_WORD1, |
| 242 | R_Z80_WORD1, /* type */ |
| 243 | 16, /* rightshift */ |
| 244 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
| 245 | 32, /* bitsize */ |
| 246 | FALSE, /* pc_relative */ |
| 247 | 0, /* bitpos */ |
| 248 | complain_overflow_dont,/* complain_on_overflow */ |
| 249 | bfd_elf_generic_reloc, /* special_function */ |
| 250 | "r_word1", /* name */ |
| 251 | FALSE, /* partial_inplace */ |
| 252 | 0, /* src_mask */ |
| 253 | 0xffff, /* dst_mask */ |
| 254 | FALSE), /* pcrel_offset */ |
| 255 | |
| 256 | /* An 16 bit big endian absolute relocation */ |
| 257 | BFD_HOWTO (BFD_RELOC_Z80_16_BE, |
| 258 | R_Z80_16_BE, /* type */ |
| 259 | 0, /* rightshift */ |
| 260 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
| 261 | 16, /* bitsize */ |
| 262 | FALSE, /* pc_relative */ |
| 263 | 0, /* bitpos */ |
| 264 | complain_overflow_bitfield, /* complain_on_overflow */ |
| 265 | z80_elf_16_be_reloc, /* special_function */ |
| 266 | "r_imm16be", /* name */ |
| 267 | FALSE, /* partial_inplace */ |
| 268 | 0x00000000, /* src_mask */ |
| 269 | 0x0000ffff, /* dst_mask */ |
| 270 | FALSE), /* pcrel_offset */ |
| 271 | }; |
| 272 | |
| 273 | static reloc_howto_type * |
| 274 | z80_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED, |
| 275 | bfd_reloc_code_real_type code) |
| 276 | { |
| 277 | enum |
| 278 | { |
| 279 | table_size = sizeof (elf_z80_howto_table) / sizeof (elf_z80_howto_table[0]) |
| 280 | }; |
| 281 | unsigned int i; |
| 282 | |
| 283 | for (i = 0; i < table_size; i++) |
| 284 | { |
| 285 | if (elf_z80_howto_table[i].r_type == code) |
| 286 | return &elf_z80_howto_table[i].howto; |
| 287 | } |
| 288 | |
| 289 | printf ("%s:%d Not found BFD reloc type %d\n", __FILE__, __LINE__, code); |
| 290 | |
| 291 | return NULL; |
| 292 | } |
| 293 | |
| 294 | static reloc_howto_type * |
| 295 | z80_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED, const char *r_name) |
| 296 | { |
| 297 | enum |
| 298 | { |
| 299 | table_size = sizeof (elf_z80_howto_table) / sizeof (elf_z80_howto_table[0]) |
| 300 | }; |
| 301 | unsigned int i; |
| 302 | |
| 303 | for (i = 0; i < table_size; i++) |
| 304 | { |
| 305 | if (elf_z80_howto_table[i].howto.name != NULL |
| 306 | && strcasecmp (elf_z80_howto_table[i].howto.name, r_name) == 0) |
| 307 | return &elf_z80_howto_table[i].howto; |
| 308 | } |
| 309 | |
| 310 | printf ("%s:%d Not found ELF reloc name `%s'\n", __FILE__, __LINE__, r_name); |
| 311 | |
| 312 | return NULL; |
| 313 | } |
| 314 | |
| 315 | static reloc_howto_type * |
| 316 | z80_rtype_to_howto (bfd *abfd, unsigned r_type) |
| 317 | { |
| 318 | enum |
| 319 | { |
| 320 | table_size = sizeof (elf_z80_howto_table) / sizeof (elf_z80_howto_table[0]) |
| 321 | }; |
| 322 | unsigned int i; |
| 323 | |
| 324 | for (i = 0; i < table_size; i++) |
| 325 | { |
| 326 | if (elf_z80_howto_table[i].howto.type == r_type) |
| 327 | return &elf_z80_howto_table[i].howto; |
| 328 | } |
| 329 | |
| 330 | /* xgettext:c-format */ |
| 331 | _bfd_error_handler (_("%pB: unsupported relocation type %#x"), |
| 332 | abfd, r_type); |
| 333 | return NULL; |
| 334 | } |
| 335 | |
| 336 | /* Set the howto pointer for an z80 ELF reloc. */ |
| 337 | |
| 338 | static bfd_boolean |
| 339 | z80_info_to_howto_rela (bfd *abfd, arelent *cache_ptr, Elf_Internal_Rela *dst) |
| 340 | { |
| 341 | unsigned int r_type = ELF32_R_TYPE (dst->r_info); |
| 342 | reloc_howto_type *howto = z80_rtype_to_howto (abfd, r_type); |
| 343 | if (howto != NULL) |
| 344 | { |
| 345 | cache_ptr->howto = howto; |
| 346 | return TRUE; |
| 347 | } |
| 348 | bfd_set_error (bfd_error_bad_value); |
| 349 | return FALSE; |
| 350 | } |
| 351 | |
| 352 | static bfd_reloc_status_type |
| 353 | z80_elf_final_link_relocate (unsigned long r_type, |
| 354 | bfd *input_bfd, |
| 355 | bfd *output_bfd ATTRIBUTE_UNUSED, |
| 356 | asection *input_section ATTRIBUTE_UNUSED, |
| 357 | bfd_byte *contents, |
| 358 | bfd_vma offset, |
| 359 | bfd_vma value, |
| 360 | bfd_vma addend, |
| 361 | struct bfd_link_info *info ATTRIBUTE_UNUSED, |
| 362 | asection *sym_sec ATTRIBUTE_UNUSED, |
| 363 | int is_local ATTRIBUTE_UNUSED) |
| 364 | { |
| 365 | bfd_boolean r; |
| 366 | reloc_howto_type *howto; |
| 367 | |
| 368 | switch (r_type) |
| 369 | { |
| 370 | case R_Z80_16_BE: |
| 371 | value += addend; |
| 372 | bfd_put_8 (input_bfd, value >> 8, contents + offset + 0); |
| 373 | bfd_put_8 (input_bfd, value >> 0, contents + offset + 1); |
| 374 | return bfd_reloc_ok; |
| 375 | } |
| 376 | |
| 377 | howto = z80_rtype_to_howto (input_bfd, r_type); |
| 378 | if (howto == NULL) |
| 379 | return bfd_reloc_notsupported; |
| 380 | |
| 381 | r = _bfd_final_link_relocate (howto, input_bfd, input_section, contents, |
| 382 | offset, value, addend); |
| 383 | return r ? bfd_reloc_ok : bfd_reloc_notsupported; |
| 384 | } |
| 385 | |
| 386 | static bfd_boolean |
| 387 | z80_elf_relocate_section (bfd *output_bfd, |
| 388 | struct bfd_link_info *info, |
| 389 | bfd *input_bfd, |
| 390 | asection *input_section, |
| 391 | bfd_byte *contents, |
| 392 | Elf_Internal_Rela *relocs, |
| 393 | Elf_Internal_Sym *local_syms, |
| 394 | asection **local_sections) |
| 395 | { |
| 396 | Elf_Internal_Shdr *symtab_hdr; |
| 397 | struct elf_link_hash_entry **sym_hashes; |
| 398 | Elf_Internal_Rela *rel, *relend; |
| 399 | |
| 400 | symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; |
| 401 | sym_hashes = elf_sym_hashes (input_bfd); |
| 402 | |
| 403 | rel = relocs; |
| 404 | relend = relocs + input_section->reloc_count; |
| 405 | for (; rel < relend; rel++) |
| 406 | { |
| 407 | unsigned int r_type; |
| 408 | unsigned long r_symndx; |
| 409 | Elf_Internal_Sym *sym; |
| 410 | asection *sec; |
| 411 | struct elf_link_hash_entry *h; |
| 412 | bfd_vma relocation; |
| 413 | |
| 414 | /* This is a final link. */ |
| 415 | r_symndx = ELF32_R_SYM (rel->r_info); |
| 416 | r_type = ELF32_R_TYPE (rel->r_info); |
| 417 | h = NULL; |
| 418 | sym = NULL; |
| 419 | sec = NULL; |
| 420 | if (r_symndx < symtab_hdr->sh_info) |
| 421 | { |
| 422 | sym = local_syms + r_symndx; |
| 423 | sec = local_sections[r_symndx]; |
| 424 | relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel); |
| 425 | } |
| 426 | else |
| 427 | { |
| 428 | bfd_boolean unresolved_reloc, warned, ignored; |
| 429 | |
| 430 | RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel, |
| 431 | r_symndx, symtab_hdr, sym_hashes, |
| 432 | h, sec, relocation, |
| 433 | unresolved_reloc, warned, ignored); |
| 434 | } |
| 435 | |
| 436 | if (sec != NULL && discarded_section (sec)) |
| 437 | { |
| 438 | /* For relocs against symbols from removed linkonce sections, |
| 439 | or sections discarded by a linker script, we just want the |
| 440 | section contents cleared. Avoid any special processing. */ |
| 441 | reloc_howto_type *howto; |
| 442 | howto = z80_rtype_to_howto (input_bfd, r_type); |
| 443 | RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section, |
| 444 | rel, 1, relend, howto, 0, contents); |
| 445 | } |
| 446 | |
| 447 | if (bfd_link_relocatable (info)) |
| 448 | continue; |
| 449 | |
| 450 | |
| 451 | z80_elf_final_link_relocate (r_type, input_bfd, output_bfd, |
| 452 | input_section, |
| 453 | contents, rel->r_offset, |
| 454 | relocation, rel->r_addend, |
| 455 | info, sec, h == NULL); |
| 456 | } |
| 457 | |
| 458 | return TRUE; |
| 459 | } |
| 460 | |
| 461 | /* The final processing done just before writing out a Z80 ELF object |
| 462 | file. This gets the Z80 architecture right based on the machine |
| 463 | number. */ |
| 464 | |
| 465 | static bfd_boolean |
| 466 | z80_elf_final_write_processing (bfd *abfd) |
| 467 | { |
| 468 | unsigned long val = bfd_get_mach (abfd); |
| 469 | |
| 470 | switch (val) |
| 471 | { |
| 472 | default: |
| 473 | _bfd_error_handler (_("%pB: unsupported bfd mach %#lx"), |
| 474 | abfd, val); |
| 475 | /* fall through */ |
| 476 | case bfd_mach_z80: |
| 477 | case bfd_mach_z80full: |
| 478 | case bfd_mach_z80strict: |
| 479 | val = EF_Z80_MACH_Z80; |
| 480 | break; |
| 481 | case bfd_mach_gbz80: |
| 482 | val = EF_Z80_MACH_GBZ80; |
| 483 | break; |
| 484 | case bfd_mach_z80n: |
| 485 | val = EF_Z80_MACH_Z80N; |
| 486 | break; |
| 487 | case bfd_mach_z180: |
| 488 | val = EF_Z80_MACH_Z180; |
| 489 | break; |
| 490 | case bfd_mach_ez80_z80: |
| 491 | val = EF_Z80_MACH_EZ80_Z80; |
| 492 | break; |
| 493 | case bfd_mach_ez80_adl: |
| 494 | val = EF_Z80_MACH_EZ80_ADL; |
| 495 | break; |
| 496 | case bfd_mach_r800: |
| 497 | val = EF_Z80_MACH_R800; |
| 498 | break; |
| 499 | } |
| 500 | elf_elfheader (abfd)->e_machine = EM_Z80; |
| 501 | elf_elfheader (abfd)->e_flags &= ~EF_Z80_MACH_MSK; |
| 502 | elf_elfheader (abfd)->e_flags |= val; |
| 503 | return _bfd_elf_final_write_processing (abfd); |
| 504 | } |
| 505 | |
| 506 | /* Set the right machine number. */ |
| 507 | static bfd_boolean |
| 508 | z80_elf_object_p (bfd *abfd) |
| 509 | { |
| 510 | unsigned int mach; |
| 511 | |
| 512 | if (elf_elfheader (abfd)->e_machine == EM_Z80) |
| 513 | { |
| 514 | int e_mach = elf_elfheader (abfd)->e_flags & EF_Z80_MACH_MSK; |
| 515 | switch (e_mach) |
| 516 | { |
| 517 | default: |
| 518 | _bfd_error_handler (_("%pB: unsupported mach %#x"), |
| 519 | abfd, e_mach); |
| 520 | /* fall through */ |
| 521 | case EF_Z80_MACH_Z80: |
| 522 | mach = bfd_mach_z80; |
| 523 | break; |
| 524 | case EF_Z80_MACH_GBZ80: |
| 525 | mach = bfd_mach_gbz80; |
| 526 | break; |
| 527 | case EF_Z80_MACH_Z180: |
| 528 | mach = bfd_mach_z180; |
| 529 | break; |
| 530 | case EF_Z80_MACH_EZ80_Z80: |
| 531 | mach = bfd_mach_ez80_z80; |
| 532 | break; |
| 533 | case EF_Z80_MACH_EZ80_ADL: |
| 534 | mach = bfd_mach_ez80_adl; |
| 535 | break; |
| 536 | case EF_Z80_MACH_R800: |
| 537 | mach = bfd_mach_r800; |
| 538 | break; |
| 539 | case EF_Z80_MACH_Z80N: |
| 540 | mach = bfd_mach_z80n; |
| 541 | break; |
| 542 | } |
| 543 | } |
| 544 | else |
| 545 | { |
| 546 | _bfd_error_handler (_("%pB: unsupported arch %#x"), |
| 547 | abfd, elf_elfheader (abfd)->e_machine); |
| 548 | mach = bfd_mach_z80; |
| 549 | } |
| 550 | return bfd_default_set_arch_mach (abfd, bfd_arch_z80, mach); |
| 551 | } |
| 552 | |
| 553 | static int |
| 554 | z80_is_local_label_name (bfd * abfd ATTRIBUTE_UNUSED, |
| 555 | const char * name) |
| 556 | { |
| 557 | return (name[0] == '.' && name[1] == 'L') || |
| 558 | _bfd_elf_is_local_label_name (abfd, name); |
| 559 | } |
| 560 | |
| 561 | static bfd_reloc_status_type |
| 562 | z80_elf_16_be_reloc (bfd *abfd, |
| 563 | arelent *reloc_entry, |
| 564 | asymbol *symbol, |
| 565 | void *data, |
| 566 | asection *input_section, |
| 567 | bfd *output_bfd, |
| 568 | char **error_message) |
| 569 | { |
| 570 | bfd_vma val; |
| 571 | long x; |
| 572 | bfd_size_type octets = (reloc_entry->address |
| 573 | * OCTETS_PER_BYTE (abfd, input_section)); |
| 574 | |
| 575 | /* If this is a relocatable link (output_bfd test tells us), just |
| 576 | call the generic function. Any adjustment will be done at final |
| 577 | link time. */ |
| 578 | if (output_bfd != NULL) |
| 579 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
| 580 | input_section, output_bfd, error_message); |
| 581 | |
| 582 | /* Get symbol value. */ |
| 583 | val = 0; |
| 584 | if (!bfd_is_com_section (symbol->section)) |
| 585 | val = symbol->value; |
| 586 | val += symbol->section->output_offset + input_section->output_offset; |
| 587 | if (symbol->section->output_section) |
| 588 | val += symbol->section->output_section->vma; |
| 589 | |
| 590 | val += reloc_entry->addend; |
| 591 | if (reloc_entry->howto->partial_inplace) |
| 592 | { |
| 593 | x = bfd_get_8 (abfd, (bfd_byte *) data + octets + 0) * 0x100; |
| 594 | x += bfd_get_8 (abfd, (bfd_byte *) data + octets + 1); |
| 595 | x &= ~reloc_entry->howto->src_mask; |
| 596 | } |
| 597 | else |
| 598 | x = 0; |
| 599 | |
| 600 | x |= val & reloc_entry->howto->dst_mask; |
| 601 | if (x < -0x8000 || x >= 0x10000) |
| 602 | return bfd_reloc_outofrange; |
| 603 | |
| 604 | bfd_put_8 (abfd, x >> 8, (bfd_byte *) data + octets + 0); |
| 605 | bfd_put_8 (abfd, x >> 0, (bfd_byte *) data + octets + 1); |
| 606 | return bfd_reloc_ok; |
| 607 | } |
| 608 | |
| 609 | #define ELF_ARCH bfd_arch_z80 |
| 610 | #define ELF_MACHINE_CODE EM_Z80 |
| 611 | #define ELF_MAXPAGESIZE 0x10000 |
| 612 | |
| 613 | #define TARGET_LITTLE_SYM z80_elf32_vec |
| 614 | #define TARGET_LITTLE_NAME "elf32-z80" |
| 615 | |
| 616 | #define elf_backend_can_refcount 1 |
| 617 | #define elf_backend_can_gc_sections 1 |
| 618 | #define elf_backend_stack_align 1 |
| 619 | #define elf_backend_rela_normal 1 |
| 620 | |
| 621 | #define elf_info_to_howto z80_info_to_howto_rela |
| 622 | #define elf_info_to_howto_rel z80_info_to_howto_rela |
| 623 | |
| 624 | #define elf_backend_final_write_processing z80_elf_final_write_processing |
| 625 | #define elf_backend_object_p z80_elf_object_p |
| 626 | #define elf_backend_relocate_section z80_elf_relocate_section |
| 627 | |
| 628 | #define bfd_elf32_bfd_reloc_type_lookup z80_reloc_type_lookup |
| 629 | #define bfd_elf32_bfd_reloc_name_lookup z80_reloc_name_lookup |
| 630 | #define bfd_elf32_bfd_is_local_label_name z80_is_local_label_name |
| 631 | |
| 632 | #include "elf32-target.h" |