| 1 | /* Intel i860 specific support for 32-bit ELF. |
| 2 | Copyright 1993, 1995, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2007, 2008, |
| 3 | 2010, 2011, 2012 |
| 4 | Free Software Foundation, Inc. |
| 5 | |
| 6 | Full i860 support contributed by Jason Eckhardt <jle@cygnus.com>. |
| 7 | |
| 8 | This file is part of BFD, the Binary File Descriptor library. |
| 9 | |
| 10 | This program is free software; you can redistribute it and/or modify |
| 11 | it under the terms of the GNU General Public License as published by |
| 12 | the Free Software Foundation; either version 3 of the License, or |
| 13 | (at your option) any later version. |
| 14 | |
| 15 | This program is distributed in the hope that it will be useful, |
| 16 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 17 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 18 | GNU General Public License for more details. |
| 19 | |
| 20 | You should have received a copy of the GNU General Public License |
| 21 | along with this program; if not, write to the Free Software |
| 22 | Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, |
| 23 | MA 02110-1301, USA. */ |
| 24 | |
| 25 | #include "sysdep.h" |
| 26 | #include "bfd.h" |
| 27 | #include "libbfd.h" |
| 28 | #include "elf-bfd.h" |
| 29 | #include "elf/i860.h" |
| 30 | |
| 31 | /* special_function for R_860_PC26 relocation. */ |
| 32 | static bfd_reloc_status_type |
| 33 | i860_howto_pc26_reloc (bfd *abfd ATTRIBUTE_UNUSED, |
| 34 | arelent *reloc_entry, |
| 35 | asymbol *symbol, |
| 36 | void *data ATTRIBUTE_UNUSED, |
| 37 | asection *input_section, |
| 38 | bfd *output_bfd, |
| 39 | char **error_message ATTRIBUTE_UNUSED) |
| 40 | { |
| 41 | bfd_vma insn; |
| 42 | bfd_vma relocation; |
| 43 | bfd_byte *addr; |
| 44 | |
| 45 | if (output_bfd != NULL |
| 46 | && (symbol->flags & BSF_SECTION_SYM) == 0 |
| 47 | && (! reloc_entry->howto->partial_inplace |
| 48 | || reloc_entry->addend == 0)) |
| 49 | { |
| 50 | reloc_entry->address += input_section->output_offset; |
| 51 | return bfd_reloc_ok; |
| 52 | } |
| 53 | |
| 54 | /* Used elf32-mips.c as an example. */ |
| 55 | if (bfd_is_und_section (symbol->section) |
| 56 | && output_bfd == (bfd *) NULL) |
| 57 | return bfd_reloc_undefined; |
| 58 | |
| 59 | if (bfd_is_com_section (symbol->section)) |
| 60 | relocation = 0; |
| 61 | else |
| 62 | relocation = symbol->value; |
| 63 | |
| 64 | relocation += symbol->section->output_section->vma; |
| 65 | relocation += symbol->section->output_offset; |
| 66 | relocation += reloc_entry->addend; |
| 67 | |
| 68 | if (reloc_entry->address > bfd_get_section_limit (abfd, input_section)) |
| 69 | return bfd_reloc_outofrange; |
| 70 | |
| 71 | /* Adjust for PC-relative relocation. */ |
| 72 | relocation -= (input_section->output_section->vma |
| 73 | + input_section->output_offset |
| 74 | + reloc_entry->address |
| 75 | + 4); |
| 76 | |
| 77 | /* Check for target out of range. */ |
| 78 | if ((bfd_signed_vma)relocation > (0x3ffffff << 2) |
| 79 | || (bfd_signed_vma)relocation < (-0x4000000 << 2)) |
| 80 | return bfd_reloc_outofrange; |
| 81 | |
| 82 | addr = (bfd_byte *) data + reloc_entry->address; |
| 83 | insn = bfd_get_32 (abfd, addr); |
| 84 | |
| 85 | relocation >>= reloc_entry->howto->rightshift; |
| 86 | insn = (insn & ~reloc_entry->howto->dst_mask) |
| 87 | | (relocation & reloc_entry->howto->dst_mask); |
| 88 | |
| 89 | bfd_put_32 (abfd, (bfd_vma) insn, addr); |
| 90 | |
| 91 | return bfd_reloc_ok; |
| 92 | } |
| 93 | |
| 94 | /* special_function for R_860_PC16 relocation. */ |
| 95 | static bfd_reloc_status_type |
| 96 | i860_howto_pc16_reloc (bfd *abfd, |
| 97 | arelent *reloc_entry, |
| 98 | asymbol *symbol, |
| 99 | void *data, |
| 100 | asection *input_section, |
| 101 | bfd *output_bfd, |
| 102 | char **error_message ATTRIBUTE_UNUSED) |
| 103 | { |
| 104 | bfd_vma insn; |
| 105 | bfd_vma relocation; |
| 106 | bfd_byte *addr; |
| 107 | |
| 108 | if (output_bfd != NULL |
| 109 | && (symbol->flags & BSF_SECTION_SYM) == 0 |
| 110 | && (! reloc_entry->howto->partial_inplace |
| 111 | || reloc_entry->addend == 0)) |
| 112 | { |
| 113 | reloc_entry->address += input_section->output_offset; |
| 114 | return bfd_reloc_ok; |
| 115 | } |
| 116 | |
| 117 | /* Used elf32-mips.c as an example. */ |
| 118 | if (bfd_is_und_section (symbol->section) |
| 119 | && output_bfd == (bfd *) NULL) |
| 120 | return bfd_reloc_undefined; |
| 121 | |
| 122 | if (bfd_is_com_section (symbol->section)) |
| 123 | relocation = 0; |
| 124 | else |
| 125 | relocation = symbol->value; |
| 126 | |
| 127 | relocation += symbol->section->output_section->vma; |
| 128 | relocation += symbol->section->output_offset; |
| 129 | relocation += reloc_entry->addend; |
| 130 | |
| 131 | if (reloc_entry->address > bfd_get_section_limit (abfd, input_section)) |
| 132 | return bfd_reloc_outofrange; |
| 133 | |
| 134 | /* Adjust for PC-relative relocation. */ |
| 135 | relocation -= (input_section->output_section->vma |
| 136 | + input_section->output_offset |
| 137 | + reloc_entry->address |
| 138 | + 4); |
| 139 | |
| 140 | /* Check for target out of range. */ |
| 141 | if ((bfd_signed_vma)relocation > (0x7fff << 2) |
| 142 | || (bfd_signed_vma)relocation < (-0x8000 << 2)) |
| 143 | return bfd_reloc_outofrange; |
| 144 | |
| 145 | addr = (bfd_byte *) data + reloc_entry->address; |
| 146 | insn = bfd_get_32 (abfd, addr); |
| 147 | |
| 148 | relocation >>= reloc_entry->howto->rightshift; |
| 149 | relocation = (((relocation & 0xf800) << 5) | (relocation & 0x7ff)) |
| 150 | & reloc_entry->howto->dst_mask; |
| 151 | insn = (insn & ~reloc_entry->howto->dst_mask) | relocation; |
| 152 | |
| 153 | bfd_put_32 (abfd, (bfd_vma) insn, addr); |
| 154 | |
| 155 | return bfd_reloc_ok; |
| 156 | } |
| 157 | |
| 158 | /* special_function for R_860_HIGHADJ relocation. */ |
| 159 | static bfd_reloc_status_type |
| 160 | i860_howto_highadj_reloc (bfd *abfd, |
| 161 | arelent *reloc_entry, |
| 162 | asymbol *symbol, |
| 163 | void *data, |
| 164 | asection *input_section, |
| 165 | bfd *output_bfd, |
| 166 | char **error_message ATTRIBUTE_UNUSED) |
| 167 | { |
| 168 | bfd_vma insn; |
| 169 | bfd_vma relocation; |
| 170 | bfd_byte *addr; |
| 171 | |
| 172 | if (output_bfd != NULL |
| 173 | && (symbol->flags & BSF_SECTION_SYM) == 0 |
| 174 | && (! reloc_entry->howto->partial_inplace |
| 175 | || reloc_entry->addend == 0)) |
| 176 | { |
| 177 | reloc_entry->address += input_section->output_offset; |
| 178 | return bfd_reloc_ok; |
| 179 | } |
| 180 | |
| 181 | /* Used elf32-mips.c as an example. */ |
| 182 | if (bfd_is_und_section (symbol->section) |
| 183 | && output_bfd == (bfd *) NULL) |
| 184 | return bfd_reloc_undefined; |
| 185 | |
| 186 | if (bfd_is_com_section (symbol->section)) |
| 187 | relocation = 0; |
| 188 | else |
| 189 | relocation = symbol->value; |
| 190 | |
| 191 | relocation += symbol->section->output_section->vma; |
| 192 | relocation += symbol->section->output_offset; |
| 193 | relocation += reloc_entry->addend; |
| 194 | relocation += 0x8000; |
| 195 | |
| 196 | if (reloc_entry->address > bfd_get_section_limit (abfd, input_section)) |
| 197 | return bfd_reloc_outofrange; |
| 198 | |
| 199 | addr = (bfd_byte *) data + reloc_entry->address; |
| 200 | insn = bfd_get_32 (abfd, addr); |
| 201 | |
| 202 | relocation = ((relocation >> 16) & 0xffff); |
| 203 | |
| 204 | insn = (insn & 0xffff0000) | relocation; |
| 205 | |
| 206 | bfd_put_32 (abfd, (bfd_vma) insn, addr); |
| 207 | |
| 208 | return bfd_reloc_ok; |
| 209 | } |
| 210 | |
| 211 | /* special_function for R_860_SPLITn relocations. */ |
| 212 | static bfd_reloc_status_type |
| 213 | i860_howto_splitn_reloc (bfd *abfd, |
| 214 | arelent *reloc_entry, |
| 215 | asymbol *symbol, |
| 216 | void *data, |
| 217 | asection *input_section, |
| 218 | bfd *output_bfd, |
| 219 | char **error_message ATTRIBUTE_UNUSED) |
| 220 | { |
| 221 | bfd_vma insn; |
| 222 | bfd_vma relocation; |
| 223 | bfd_byte *addr; |
| 224 | |
| 225 | if (output_bfd != NULL |
| 226 | && (symbol->flags & BSF_SECTION_SYM) == 0 |
| 227 | && (! reloc_entry->howto->partial_inplace |
| 228 | || reloc_entry->addend == 0)) |
| 229 | { |
| 230 | reloc_entry->address += input_section->output_offset; |
| 231 | return bfd_reloc_ok; |
| 232 | } |
| 233 | |
| 234 | /* Used elf32-mips.c as an example. */ |
| 235 | if (bfd_is_und_section (symbol->section) |
| 236 | && output_bfd == (bfd *) NULL) |
| 237 | return bfd_reloc_undefined; |
| 238 | |
| 239 | if (bfd_is_com_section (symbol->section)) |
| 240 | relocation = 0; |
| 241 | else |
| 242 | relocation = symbol->value; |
| 243 | |
| 244 | relocation += symbol->section->output_section->vma; |
| 245 | relocation += symbol->section->output_offset; |
| 246 | relocation += reloc_entry->addend; |
| 247 | |
| 248 | if (reloc_entry->address > bfd_get_section_limit (abfd, input_section)) |
| 249 | return bfd_reloc_outofrange; |
| 250 | |
| 251 | addr = (bfd_byte *) data + reloc_entry->address; |
| 252 | insn = bfd_get_32 (abfd, addr); |
| 253 | |
| 254 | relocation = (((relocation & 0xf800) << 5) | (relocation & 0x7ff)) |
| 255 | & reloc_entry->howto->dst_mask; |
| 256 | insn = (insn & ~reloc_entry->howto->dst_mask) | relocation; |
| 257 | |
| 258 | bfd_put_32 (abfd, (bfd_vma) insn, addr); |
| 259 | |
| 260 | return bfd_reloc_ok; |
| 261 | } |
| 262 | |
| 263 | /* This howto table is preliminary. */ |
| 264 | static reloc_howto_type elf32_i860_howto_table [] = |
| 265 | { |
| 266 | /* This relocation does nothing. */ |
| 267 | HOWTO (R_860_NONE, /* type */ |
| 268 | 0, /* rightshift */ |
| 269 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 270 | 32, /* bitsize */ |
| 271 | FALSE, /* pc_relative */ |
| 272 | 0, /* bitpos */ |
| 273 | complain_overflow_bitfield, /* complain_on_overflow */ |
| 274 | bfd_elf_generic_reloc, /* special_function */ |
| 275 | "R_860_NONE", /* name */ |
| 276 | FALSE, /* partial_inplace */ |
| 277 | 0, /* src_mask */ |
| 278 | 0, /* dst_mask */ |
| 279 | FALSE), /* pcrel_offset */ |
| 280 | |
| 281 | /* A 32-bit absolute relocation. */ |
| 282 | HOWTO (R_860_32, /* type */ |
| 283 | 0, /* rightshift */ |
| 284 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 285 | 32, /* bitsize */ |
| 286 | FALSE, /* pc_relative */ |
| 287 | 0, /* bitpos */ |
| 288 | complain_overflow_bitfield, /* complain_on_overflow */ |
| 289 | bfd_elf_generic_reloc, /* special_function */ |
| 290 | "R_860_32", /* name */ |
| 291 | FALSE, /* partial_inplace */ |
| 292 | 0xffffffff, /* src_mask */ |
| 293 | 0xffffffff, /* dst_mask */ |
| 294 | FALSE), /* pcrel_offset */ |
| 295 | |
| 296 | HOWTO (R_860_COPY, /* type */ |
| 297 | 0, /* rightshift */ |
| 298 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 299 | 32, /* bitsize */ |
| 300 | FALSE, /* pc_relative */ |
| 301 | 0, /* bitpos */ |
| 302 | complain_overflow_bitfield, /* complain_on_overflow */ |
| 303 | bfd_elf_generic_reloc, /* special_function */ |
| 304 | "R_860_COPY", /* name */ |
| 305 | TRUE, /* partial_inplace */ |
| 306 | 0xffffffff, /* src_mask */ |
| 307 | 0xffffffff, /* dst_mask */ |
| 308 | FALSE), /* pcrel_offset */ |
| 309 | |
| 310 | HOWTO (R_860_GLOB_DAT, /* type */ |
| 311 | 0, /* rightshift */ |
| 312 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 313 | 32, /* bitsize */ |
| 314 | FALSE, /* pc_relative */ |
| 315 | 0, /* bitpos */ |
| 316 | complain_overflow_bitfield, /* complain_on_overflow */ |
| 317 | bfd_elf_generic_reloc, /* special_function */ |
| 318 | "R_860_GLOB_DAT", /* name */ |
| 319 | TRUE, /* partial_inplace */ |
| 320 | 0xffffffff, /* src_mask */ |
| 321 | 0xffffffff, /* dst_mask */ |
| 322 | FALSE), /* pcrel_offset */ |
| 323 | |
| 324 | HOWTO (R_860_JUMP_SLOT, /* type */ |
| 325 | 0, /* rightshift */ |
| 326 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 327 | 32, /* bitsize */ |
| 328 | FALSE, /* pc_relative */ |
| 329 | 0, /* bitpos */ |
| 330 | complain_overflow_bitfield, /* complain_on_overflow */ |
| 331 | bfd_elf_generic_reloc, /* special_function */ |
| 332 | "R_860_JUMP_SLOT", /* name */ |
| 333 | TRUE, /* partial_inplace */ |
| 334 | 0xffffffff, /* src_mask */ |
| 335 | 0xffffffff, /* dst_mask */ |
| 336 | FALSE), /* pcrel_offset */ |
| 337 | |
| 338 | HOWTO (R_860_RELATIVE, /* type */ |
| 339 | 0, /* rightshift */ |
| 340 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 341 | 32, /* bitsize */ |
| 342 | FALSE, /* pc_relative */ |
| 343 | 0, /* bitpos */ |
| 344 | complain_overflow_bitfield, /* complain_on_overflow */ |
| 345 | bfd_elf_generic_reloc, /* special_function */ |
| 346 | "R_860_RELATIVE", /* name */ |
| 347 | TRUE, /* partial_inplace */ |
| 348 | 0xffffffff, /* src_mask */ |
| 349 | 0xffffffff, /* dst_mask */ |
| 350 | FALSE), /* pcrel_offset */ |
| 351 | |
| 352 | /* A 26-bit PC-relative relocation. */ |
| 353 | HOWTO (R_860_PC26, /* type */ |
| 354 | 2, /* rightshift */ |
| 355 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 356 | 26, /* bitsize */ |
| 357 | TRUE, /* pc_relative */ |
| 358 | 0, /* bitpos */ |
| 359 | complain_overflow_bitfield, /* complain_on_overflow */ |
| 360 | i860_howto_pc26_reloc, /* special_function */ |
| 361 | "R_860_PC26", /* name */ |
| 362 | FALSE, /* partial_inplace */ |
| 363 | 0x3ffffff, /* src_mask */ |
| 364 | 0x3ffffff, /* dst_mask */ |
| 365 | TRUE), /* pcrel_offset */ |
| 366 | |
| 367 | HOWTO (R_860_PLT26, /* type */ |
| 368 | 0, /* rightshift */ |
| 369 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 370 | 26, /* bitsize */ |
| 371 | TRUE, /* pc_relative */ |
| 372 | 0, /* bitpos */ |
| 373 | complain_overflow_bitfield, /* complain_on_overflow */ |
| 374 | bfd_elf_generic_reloc, /* special_function */ |
| 375 | "R_860_PLT26", /* name */ |
| 376 | TRUE, /* partial_inplace */ |
| 377 | 0xffffffff, /* src_mask */ |
| 378 | 0xffffffff, /* dst_mask */ |
| 379 | TRUE), /* pcrel_offset */ |
| 380 | |
| 381 | /* A 16-bit PC-relative relocation. */ |
| 382 | HOWTO (R_860_PC16, /* type */ |
| 383 | 2, /* rightshift */ |
| 384 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 385 | 16, /* bitsize */ |
| 386 | TRUE, /* pc_relative */ |
| 387 | 0, /* bitpos */ |
| 388 | complain_overflow_bitfield, /* complain_on_overflow */ |
| 389 | i860_howto_pc16_reloc, /* special_function */ |
| 390 | "R_860_PC16", /* name */ |
| 391 | FALSE, /* partial_inplace */ |
| 392 | 0x1f07ff, /* src_mask */ |
| 393 | 0x1f07ff, /* dst_mask */ |
| 394 | TRUE), /* pcrel_offset */ |
| 395 | |
| 396 | HOWTO (R_860_LOW0, /* type */ |
| 397 | 0, /* rightshift */ |
| 398 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 399 | 16, /* bitsize */ |
| 400 | FALSE, /* pc_relative */ |
| 401 | 0, /* bitpos */ |
| 402 | complain_overflow_dont, /* complain_on_overflow */ |
| 403 | bfd_elf_generic_reloc, /* special_function */ |
| 404 | "R_860_LOW0", /* name */ |
| 405 | FALSE, /* partial_inplace */ |
| 406 | 0xffff, /* src_mask */ |
| 407 | 0xffff, /* dst_mask */ |
| 408 | FALSE), /* pcrel_offset */ |
| 409 | |
| 410 | HOWTO (R_860_SPLIT0, /* type */ |
| 411 | 0, /* rightshift */ |
| 412 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 413 | 16, /* bitsize */ |
| 414 | FALSE, /* pc_relative */ |
| 415 | 0, /* bitpos */ |
| 416 | complain_overflow_dont, /* complain_on_overflow */ |
| 417 | i860_howto_splitn_reloc, /* special_function */ |
| 418 | "R_860_SPLIT0", /* name */ |
| 419 | FALSE, /* partial_inplace */ |
| 420 | 0x1f07ff, /* src_mask */ |
| 421 | 0x1f07ff, /* dst_mask */ |
| 422 | FALSE), /* pcrel_offset */ |
| 423 | |
| 424 | HOWTO (R_860_LOW1, /* type */ |
| 425 | 0, /* rightshift */ |
| 426 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 427 | 16, /* bitsize */ |
| 428 | FALSE, /* pc_relative */ |
| 429 | 0, /* bitpos */ |
| 430 | complain_overflow_dont, /* complain_on_overflow */ |
| 431 | bfd_elf_generic_reloc, /* special_function */ |
| 432 | "R_860_LOW1", /* name */ |
| 433 | FALSE, /* partial_inplace */ |
| 434 | 0xfffe, /* src_mask */ |
| 435 | 0xfffe, /* dst_mask */ |
| 436 | FALSE), /* pcrel_offset */ |
| 437 | |
| 438 | HOWTO (R_860_SPLIT1, /* type */ |
| 439 | 0, /* rightshift */ |
| 440 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 441 | 16, /* bitsize */ |
| 442 | FALSE, /* pc_relative */ |
| 443 | 0, /* bitpos */ |
| 444 | complain_overflow_dont, /* complain_on_overflow */ |
| 445 | i860_howto_splitn_reloc, /* special_function */ |
| 446 | "R_860_SPLIT1", /* name */ |
| 447 | FALSE, /* partial_inplace */ |
| 448 | 0x1f07fe, /* src_mask */ |
| 449 | 0x1f07fe, /* dst_mask */ |
| 450 | FALSE), /* pcrel_offset */ |
| 451 | |
| 452 | HOWTO (R_860_LOW2, /* type */ |
| 453 | 0, /* rightshift */ |
| 454 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 455 | 16, /* bitsize */ |
| 456 | FALSE, /* pc_relative */ |
| 457 | 0, /* bitpos */ |
| 458 | complain_overflow_dont, /* complain_on_overflow */ |
| 459 | bfd_elf_generic_reloc, /* special_function */ |
| 460 | "R_860_LOW2", /* name */ |
| 461 | FALSE, /* partial_inplace */ |
| 462 | 0xfffc, /* src_mask */ |
| 463 | 0xfffc, /* dst_mask */ |
| 464 | FALSE), /* pcrel_offset */ |
| 465 | |
| 466 | HOWTO (R_860_SPLIT2, /* type */ |
| 467 | 0, /* rightshift */ |
| 468 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 469 | 16, /* bitsize */ |
| 470 | FALSE, /* pc_relative */ |
| 471 | 0, /* bitpos */ |
| 472 | complain_overflow_dont, /* complain_on_overflow */ |
| 473 | i860_howto_splitn_reloc, /* special_function */ |
| 474 | "R_860_SPLIT2", /* name */ |
| 475 | FALSE, /* partial_inplace */ |
| 476 | 0x1f07fc, /* src_mask */ |
| 477 | 0x1f07fc, /* dst_mask */ |
| 478 | FALSE), /* pcrel_offset */ |
| 479 | |
| 480 | HOWTO (R_860_LOW3, /* type */ |
| 481 | 0, /* rightshift */ |
| 482 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 483 | 16, /* bitsize */ |
| 484 | FALSE, /* pc_relative */ |
| 485 | 0, /* bitpos */ |
| 486 | complain_overflow_dont, /* complain_on_overflow */ |
| 487 | bfd_elf_generic_reloc, /* special_function */ |
| 488 | "R_860_LOW3", /* name */ |
| 489 | FALSE, /* partial_inplace */ |
| 490 | 0xfff8, /* src_mask */ |
| 491 | 0xfff8, /* dst_mask */ |
| 492 | FALSE), /* pcrel_offset */ |
| 493 | |
| 494 | HOWTO (R_860_LOGOT0, /* type */ |
| 495 | 0, /* rightshift */ |
| 496 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 497 | 16, /* bitsize */ |
| 498 | FALSE, /* pc_relative */ |
| 499 | 0, /* bitpos */ |
| 500 | complain_overflow_dont, /* complain_on_overflow */ |
| 501 | bfd_elf_generic_reloc, /* special_function */ |
| 502 | "R_860_LOGOT0", /* name */ |
| 503 | FALSE, /* partial_inplace */ |
| 504 | 0, /* src_mask */ |
| 505 | 0xffff, /* dst_mask */ |
| 506 | TRUE), /* pcrel_offset */ |
| 507 | |
| 508 | HOWTO (R_860_SPGOT0, /* type */ |
| 509 | 0, /* rightshift */ |
| 510 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 511 | 16, /* bitsize */ |
| 512 | FALSE, /* pc_relative */ |
| 513 | 0, /* bitpos */ |
| 514 | complain_overflow_dont, /* complain_on_overflow */ |
| 515 | bfd_elf_generic_reloc, /* special_function */ |
| 516 | "R_860_SPGOT0", /* name */ |
| 517 | FALSE, /* partial_inplace */ |
| 518 | 0, /* src_mask */ |
| 519 | 0xffff, /* dst_mask */ |
| 520 | TRUE), /* pcrel_offset */ |
| 521 | |
| 522 | HOWTO (R_860_LOGOT1, /* type */ |
| 523 | 0, /* rightshift */ |
| 524 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 525 | 16, /* bitsize */ |
| 526 | FALSE, /* pc_relative */ |
| 527 | 0, /* bitpos */ |
| 528 | complain_overflow_dont, /* complain_on_overflow */ |
| 529 | bfd_elf_generic_reloc, /* special_function */ |
| 530 | "R_860_LOGOT1", /* name */ |
| 531 | FALSE, /* partial_inplace */ |
| 532 | 0, /* src_mask */ |
| 533 | 0xffff, /* dst_mask */ |
| 534 | TRUE), /* pcrel_offset */ |
| 535 | |
| 536 | HOWTO (R_860_SPGOT1, /* type */ |
| 537 | 0, /* rightshift */ |
| 538 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 539 | 16, /* bitsize */ |
| 540 | FALSE, /* pc_relative */ |
| 541 | 0, /* bitpos */ |
| 542 | complain_overflow_dont, /* complain_on_overflow */ |
| 543 | bfd_elf_generic_reloc, /* special_function */ |
| 544 | "R_860_SPGOT1", /* name */ |
| 545 | FALSE, /* partial_inplace */ |
| 546 | 0, /* src_mask */ |
| 547 | 0xffff, /* dst_mask */ |
| 548 | TRUE), /* pcrel_offset */ |
| 549 | |
| 550 | HOWTO (R_860_LOGOTOFF0, /* type */ |
| 551 | 0, /* rightshift */ |
| 552 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 553 | 32, /* bitsize */ |
| 554 | FALSE, /* pc_relative */ |
| 555 | 0, /* bitpos */ |
| 556 | complain_overflow_dont, /* complain_on_overflow */ |
| 557 | bfd_elf_generic_reloc, /* special_function */ |
| 558 | "R_860_LOGOTOFF0", /* name */ |
| 559 | TRUE, /* partial_inplace */ |
| 560 | 0xffffffff, /* src_mask */ |
| 561 | 0xffffffff, /* dst_mask */ |
| 562 | FALSE), /* pcrel_offset */ |
| 563 | |
| 564 | HOWTO (R_860_SPGOTOFF0, /* type */ |
| 565 | 0, /* rightshift */ |
| 566 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 567 | 32, /* bitsize */ |
| 568 | FALSE, /* pc_relative */ |
| 569 | 0, /* bitpos */ |
| 570 | complain_overflow_dont, /* complain_on_overflow */ |
| 571 | bfd_elf_generic_reloc, /* special_function */ |
| 572 | "R_860_SPGOTOFF0", /* name */ |
| 573 | TRUE, /* partial_inplace */ |
| 574 | 0xffffffff, /* src_mask */ |
| 575 | 0xffffffff, /* dst_mask */ |
| 576 | FALSE), /* pcrel_offset */ |
| 577 | |
| 578 | HOWTO (R_860_LOGOTOFF1, /* type */ |
| 579 | 0, /* rightshift */ |
| 580 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 581 | 32, /* bitsize */ |
| 582 | FALSE, /* pc_relative */ |
| 583 | 0, /* bitpos */ |
| 584 | complain_overflow_dont, /* complain_on_overflow */ |
| 585 | bfd_elf_generic_reloc, /* special_function */ |
| 586 | "R_860_LOGOTOFF1", /* name */ |
| 587 | TRUE, /* partial_inplace */ |
| 588 | 0xffffffff, /* src_mask */ |
| 589 | 0xffffffff, /* dst_mask */ |
| 590 | FALSE), /* pcrel_offset */ |
| 591 | |
| 592 | HOWTO (R_860_SPGOTOFF1, /* type */ |
| 593 | 0, /* rightshift */ |
| 594 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 595 | 32, /* bitsize */ |
| 596 | FALSE, /* pc_relative */ |
| 597 | 0, /* bitpos */ |
| 598 | complain_overflow_dont, /* complain_on_overflow */ |
| 599 | bfd_elf_generic_reloc, /* special_function */ |
| 600 | "R_860_SPGOTOFF1", /* name */ |
| 601 | TRUE, /* partial_inplace */ |
| 602 | 0xffffffff, /* src_mask */ |
| 603 | 0xffffffff, /* dst_mask */ |
| 604 | FALSE), /* pcrel_offset */ |
| 605 | |
| 606 | HOWTO (R_860_LOGOTOFF2, /* type */ |
| 607 | 0, /* rightshift */ |
| 608 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 609 | 32, /* bitsize */ |
| 610 | FALSE, /* pc_relative */ |
| 611 | 0, /* bitpos */ |
| 612 | complain_overflow_dont, /* complain_on_overflow */ |
| 613 | bfd_elf_generic_reloc, /* special_function */ |
| 614 | "R_860_LOGOTOFF2", /* name */ |
| 615 | TRUE, /* partial_inplace */ |
| 616 | 0xffffffff, /* src_mask */ |
| 617 | 0xffffffff, /* dst_mask */ |
| 618 | FALSE), /* pcrel_offset */ |
| 619 | |
| 620 | HOWTO (R_860_LOGOTOFF3, /* type */ |
| 621 | 0, /* rightshift */ |
| 622 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 623 | 32, /* bitsize */ |
| 624 | FALSE, /* pc_relative */ |
| 625 | 0, /* bitpos */ |
| 626 | complain_overflow_dont, /* complain_on_overflow */ |
| 627 | bfd_elf_generic_reloc, /* special_function */ |
| 628 | "R_860_LOGOTOFF3", /* name */ |
| 629 | TRUE, /* partial_inplace */ |
| 630 | 0xffffffff, /* src_mask */ |
| 631 | 0xffffffff, /* dst_mask */ |
| 632 | FALSE), /* pcrel_offset */ |
| 633 | |
| 634 | HOWTO (R_860_LOPC, /* type */ |
| 635 | 0, /* rightshift */ |
| 636 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 637 | 16, /* bitsize */ |
| 638 | TRUE, /* pc_relative */ |
| 639 | 0, /* bitpos */ |
| 640 | complain_overflow_bitfield, /* complain_on_overflow */ |
| 641 | bfd_elf_generic_reloc, /* special_function */ |
| 642 | "R_860_LOPC", /* name */ |
| 643 | FALSE, /* partial_inplace */ |
| 644 | 0xffff, /* src_mask */ |
| 645 | 0xffff, /* dst_mask */ |
| 646 | TRUE), /* pcrel_offset */ |
| 647 | |
| 648 | HOWTO (R_860_HIGHADJ, /* type */ |
| 649 | 0, /* rightshift */ |
| 650 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 651 | 16, /* bitsize */ |
| 652 | FALSE, /* pc_relative */ |
| 653 | 0, /* bitpos */ |
| 654 | complain_overflow_dont, /* complain_on_overflow */ |
| 655 | i860_howto_highadj_reloc, /* special_function */ |
| 656 | "R_860_HIGHADJ", /* name */ |
| 657 | FALSE, /* partial_inplace */ |
| 658 | 0xffff, /* src_mask */ |
| 659 | 0xffff, /* dst_mask */ |
| 660 | FALSE), /* pcrel_offset */ |
| 661 | |
| 662 | HOWTO (R_860_HAGOT, /* type */ |
| 663 | 0, /* rightshift */ |
| 664 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 665 | 16, /* bitsize */ |
| 666 | FALSE, /* pc_relative */ |
| 667 | 0, /* bitpos */ |
| 668 | complain_overflow_dont, /* complain_on_overflow */ |
| 669 | bfd_elf_generic_reloc, /* special_function */ |
| 670 | "R_860_HAGOT", /* name */ |
| 671 | FALSE, /* partial_inplace */ |
| 672 | 0, /* src_mask */ |
| 673 | 0xffff, /* dst_mask */ |
| 674 | TRUE), /* pcrel_offset */ |
| 675 | |
| 676 | HOWTO (R_860_HAGOTOFF, /* type */ |
| 677 | 0, /* rightshift */ |
| 678 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 679 | 32, /* bitsize */ |
| 680 | FALSE, /* pc_relative */ |
| 681 | 0, /* bitpos */ |
| 682 | complain_overflow_dont, /* complain_on_overflow */ |
| 683 | bfd_elf_generic_reloc, /* special_function */ |
| 684 | "R_860_HAGOTOFF", /* name */ |
| 685 | TRUE, /* partial_inplace */ |
| 686 | 0xffffffff, /* src_mask */ |
| 687 | 0xffffffff, /* dst_mask */ |
| 688 | FALSE), /* pcrel_offset */ |
| 689 | |
| 690 | HOWTO (R_860_HAPC, /* type */ |
| 691 | 0, /* rightshift */ |
| 692 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 693 | 16, /* bitsize */ |
| 694 | TRUE, /* pc_relative */ |
| 695 | 0, /* bitpos */ |
| 696 | complain_overflow_bitfield, /* complain_on_overflow */ |
| 697 | bfd_elf_generic_reloc, /* special_function */ |
| 698 | "R_860_HAPC", /* name */ |
| 699 | FALSE, /* partial_inplace */ |
| 700 | 0xffff, /* src_mask */ |
| 701 | 0xffff, /* dst_mask */ |
| 702 | TRUE), /* pcrel_offset */ |
| 703 | |
| 704 | HOWTO (R_860_HIGH, /* type */ |
| 705 | 16, /* rightshift */ |
| 706 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 707 | 16, /* bitsize */ |
| 708 | FALSE, /* pc_relative */ |
| 709 | 0, /* bitpos */ |
| 710 | complain_overflow_dont, /* complain_on_overflow */ |
| 711 | bfd_elf_generic_reloc, /* special_function */ |
| 712 | "R_860_HIGH", /* name */ |
| 713 | FALSE, /* partial_inplace */ |
| 714 | 0xffff, /* src_mask */ |
| 715 | 0xffff, /* dst_mask */ |
| 716 | FALSE), /* pcrel_offset */ |
| 717 | |
| 718 | HOWTO (R_860_HIGOT, /* type */ |
| 719 | 0, /* rightshift */ |
| 720 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 721 | 16, /* bitsize */ |
| 722 | FALSE, /* pc_relative */ |
| 723 | 0, /* bitpos */ |
| 724 | complain_overflow_dont, /* complain_on_overflow */ |
| 725 | bfd_elf_generic_reloc, /* special_function */ |
| 726 | "R_860_HIGOT", /* name */ |
| 727 | FALSE, /* partial_inplace */ |
| 728 | 0, /* src_mask */ |
| 729 | 0xffff, /* dst_mask */ |
| 730 | TRUE), /* pcrel_offset */ |
| 731 | |
| 732 | HOWTO (R_860_HIGOTOFF, /* type */ |
| 733 | 0, /* rightshift */ |
| 734 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 735 | 32, /* bitsize */ |
| 736 | FALSE, /* pc_relative */ |
| 737 | 0, /* bitpos */ |
| 738 | complain_overflow_dont, /* complain_on_overflow */ |
| 739 | bfd_elf_generic_reloc, /* special_function */ |
| 740 | "R_860_HIGOTOFF", /* name */ |
| 741 | TRUE, /* partial_inplace */ |
| 742 | 0xffffffff, /* src_mask */ |
| 743 | 0xffffffff, /* dst_mask */ |
| 744 | FALSE), /* pcrel_offset */ |
| 745 | }; |
| 746 | \f |
| 747 | static unsigned char elf_code_to_howto_index[R_860_max + 1]; |
| 748 | |
| 749 | static reloc_howto_type * |
| 750 | lookup_howto (unsigned int rtype) |
| 751 | { |
| 752 | static int initialized = 0; |
| 753 | int i; |
| 754 | int howto_tbl_size = (int) (sizeof (elf32_i860_howto_table) |
| 755 | / sizeof (elf32_i860_howto_table[0])); |
| 756 | |
| 757 | if (! initialized) |
| 758 | { |
| 759 | initialized = 1; |
| 760 | memset (elf_code_to_howto_index, 0xff, |
| 761 | sizeof (elf_code_to_howto_index)); |
| 762 | for (i = 0; i < howto_tbl_size; i++) |
| 763 | elf_code_to_howto_index[elf32_i860_howto_table[i].type] = i; |
| 764 | } |
| 765 | |
| 766 | BFD_ASSERT (rtype <= R_860_max); |
| 767 | i = elf_code_to_howto_index[rtype]; |
| 768 | if (i >= howto_tbl_size) |
| 769 | return 0; |
| 770 | return elf32_i860_howto_table + i; |
| 771 | } |
| 772 | |
| 773 | /* Given a BFD reloc, return the matching HOWTO structure. */ |
| 774 | static reloc_howto_type * |
| 775 | elf32_i860_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED, |
| 776 | bfd_reloc_code_real_type code) |
| 777 | { |
| 778 | unsigned int rtype; |
| 779 | |
| 780 | switch (code) |
| 781 | { |
| 782 | case BFD_RELOC_NONE: |
| 783 | rtype = R_860_NONE; |
| 784 | break; |
| 785 | case BFD_RELOC_32: |
| 786 | rtype = R_860_32; |
| 787 | break; |
| 788 | case BFD_RELOC_860_COPY: |
| 789 | rtype = R_860_COPY; |
| 790 | break; |
| 791 | case BFD_RELOC_860_GLOB_DAT: |
| 792 | rtype = R_860_GLOB_DAT; |
| 793 | break; |
| 794 | case BFD_RELOC_860_JUMP_SLOT: |
| 795 | rtype = R_860_JUMP_SLOT; |
| 796 | break; |
| 797 | case BFD_RELOC_860_RELATIVE: |
| 798 | rtype = R_860_RELATIVE; |
| 799 | break; |
| 800 | case BFD_RELOC_860_PC26: |
| 801 | rtype = R_860_PC26; |
| 802 | break; |
| 803 | case BFD_RELOC_860_PLT26: |
| 804 | rtype = R_860_PLT26; |
| 805 | break; |
| 806 | case BFD_RELOC_860_PC16: |
| 807 | rtype = R_860_PC16; |
| 808 | break; |
| 809 | case BFD_RELOC_860_LOW0: |
| 810 | rtype = R_860_LOW0; |
| 811 | break; |
| 812 | case BFD_RELOC_860_SPLIT0: |
| 813 | rtype = R_860_SPLIT0; |
| 814 | break; |
| 815 | case BFD_RELOC_860_LOW1: |
| 816 | rtype = R_860_LOW1; |
| 817 | break; |
| 818 | case BFD_RELOC_860_SPLIT1: |
| 819 | rtype = R_860_SPLIT1; |
| 820 | break; |
| 821 | case BFD_RELOC_860_LOW2: |
| 822 | rtype = R_860_LOW2; |
| 823 | break; |
| 824 | case BFD_RELOC_860_SPLIT2: |
| 825 | rtype = R_860_SPLIT2; |
| 826 | break; |
| 827 | case BFD_RELOC_860_LOW3: |
| 828 | rtype = R_860_LOW3; |
| 829 | break; |
| 830 | case BFD_RELOC_860_LOGOT0: |
| 831 | rtype = R_860_LOGOT0; |
| 832 | break; |
| 833 | case BFD_RELOC_860_SPGOT0: |
| 834 | rtype = R_860_SPGOT0; |
| 835 | break; |
| 836 | case BFD_RELOC_860_LOGOT1: |
| 837 | rtype = R_860_LOGOT1; |
| 838 | break; |
| 839 | case BFD_RELOC_860_SPGOT1: |
| 840 | rtype = R_860_SPGOT1; |
| 841 | break; |
| 842 | case BFD_RELOC_860_LOGOTOFF0: |
| 843 | rtype = R_860_LOGOTOFF0; |
| 844 | break; |
| 845 | case BFD_RELOC_860_SPGOTOFF0: |
| 846 | rtype = R_860_SPGOTOFF0; |
| 847 | break; |
| 848 | case BFD_RELOC_860_LOGOTOFF1: |
| 849 | rtype = R_860_LOGOTOFF1; |
| 850 | break; |
| 851 | case BFD_RELOC_860_SPGOTOFF1: |
| 852 | rtype = R_860_SPGOTOFF1; |
| 853 | break; |
| 854 | case BFD_RELOC_860_LOGOTOFF2: |
| 855 | rtype = R_860_LOGOTOFF2; |
| 856 | break; |
| 857 | case BFD_RELOC_860_LOGOTOFF3: |
| 858 | rtype = R_860_LOGOTOFF3; |
| 859 | break; |
| 860 | case BFD_RELOC_860_LOPC: |
| 861 | rtype = R_860_LOPC; |
| 862 | break; |
| 863 | case BFD_RELOC_860_HIGHADJ: |
| 864 | rtype = R_860_HIGHADJ; |
| 865 | break; |
| 866 | case BFD_RELOC_860_HAGOT: |
| 867 | rtype = R_860_HAGOT; |
| 868 | break; |
| 869 | case BFD_RELOC_860_HAGOTOFF: |
| 870 | rtype = R_860_HAGOTOFF; |
| 871 | break; |
| 872 | case BFD_RELOC_860_HAPC: |
| 873 | rtype = R_860_HAPC; |
| 874 | break; |
| 875 | case BFD_RELOC_860_HIGH: |
| 876 | rtype = R_860_HIGH; |
| 877 | break; |
| 878 | case BFD_RELOC_860_HIGOT: |
| 879 | rtype = R_860_HIGOT; |
| 880 | break; |
| 881 | case BFD_RELOC_860_HIGOTOFF: |
| 882 | rtype = R_860_HIGOTOFF; |
| 883 | break; |
| 884 | default: |
| 885 | rtype = 0; |
| 886 | break; |
| 887 | } |
| 888 | return lookup_howto (rtype); |
| 889 | } |
| 890 | |
| 891 | static reloc_howto_type * |
| 892 | elf32_i860_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED, |
| 893 | const char *r_name) |
| 894 | { |
| 895 | unsigned int i; |
| 896 | |
| 897 | for (i = 0; |
| 898 | i < (sizeof (elf32_i860_howto_table) |
| 899 | / sizeof (elf32_i860_howto_table[0])); |
| 900 | i++) |
| 901 | if (elf32_i860_howto_table[i].name != NULL |
| 902 | && strcasecmp (elf32_i860_howto_table[i].name, r_name) == 0) |
| 903 | return &elf32_i860_howto_table[i]; |
| 904 | |
| 905 | return NULL; |
| 906 | } |
| 907 | |
| 908 | /* Given a ELF reloc, return the matching HOWTO structure. */ |
| 909 | static void |
| 910 | elf32_i860_info_to_howto_rela (bfd *abfd ATTRIBUTE_UNUSED, |
| 911 | arelent *bfd_reloc, |
| 912 | Elf_Internal_Rela *elf_reloc) |
| 913 | { |
| 914 | bfd_reloc->howto |
| 915 | = lookup_howto ((unsigned) ELF32_R_TYPE (elf_reloc->r_info)); |
| 916 | } |
| 917 | \f |
| 918 | /* Specialized relocation handler for R_860_SPLITn. These relocations |
| 919 | involves a 16-bit field that is split into two contiguous parts. */ |
| 920 | static bfd_reloc_status_type |
| 921 | elf32_i860_relocate_splitn (bfd *input_bfd, |
| 922 | Elf_Internal_Rela *rello, |
| 923 | bfd_byte *contents, |
| 924 | bfd_vma value) |
| 925 | { |
| 926 | bfd_vma insn; |
| 927 | reloc_howto_type *howto; |
| 928 | howto = lookup_howto ((unsigned) ELF32_R_TYPE (rello->r_info)); |
| 929 | insn = bfd_get_32 (input_bfd, contents + rello->r_offset); |
| 930 | |
| 931 | /* Relocate. */ |
| 932 | value += rello->r_addend; |
| 933 | |
| 934 | /* Separate the fields and insert. */ |
| 935 | value = (((value & 0xf800) << 5) | (value & 0x7ff)) & howto->dst_mask; |
| 936 | insn = (insn & ~howto->dst_mask) | value; |
| 937 | |
| 938 | bfd_put_32 (input_bfd, insn, contents + rello->r_offset); |
| 939 | return bfd_reloc_ok; |
| 940 | } |
| 941 | |
| 942 | /* Specialized relocation handler for R_860_PC16. This relocation |
| 943 | involves a 16-bit, PC-relative field that is split into two contiguous |
| 944 | parts. */ |
| 945 | static bfd_reloc_status_type |
| 946 | elf32_i860_relocate_pc16 (bfd *input_bfd, |
| 947 | asection *input_section, |
| 948 | Elf_Internal_Rela *rello, |
| 949 | bfd_byte *contents, |
| 950 | bfd_vma value) |
| 951 | { |
| 952 | bfd_vma insn; |
| 953 | reloc_howto_type *howto; |
| 954 | howto = lookup_howto ((unsigned) ELF32_R_TYPE (rello->r_info)); |
| 955 | insn = bfd_get_32 (input_bfd, contents + rello->r_offset); |
| 956 | |
| 957 | /* Adjust for PC-relative relocation. */ |
| 958 | value -= (input_section->output_section->vma |
| 959 | + input_section->output_offset); |
| 960 | value -= rello->r_offset; |
| 961 | |
| 962 | /* Relocate. */ |
| 963 | value += rello->r_addend; |
| 964 | |
| 965 | /* Adjust the value by 4, then separate the fields and insert. */ |
| 966 | value = (value - 4) >> howto->rightshift; |
| 967 | value = (((value & 0xf800) << 5) | (value & 0x7ff)) & howto->dst_mask; |
| 968 | insn = (insn & ~howto->dst_mask) | value; |
| 969 | |
| 970 | bfd_put_32 (input_bfd, insn, contents + rello->r_offset); |
| 971 | return bfd_reloc_ok; |
| 972 | |
| 973 | } |
| 974 | |
| 975 | /* Specialized relocation handler for R_860_PC26. This relocation |
| 976 | involves a 26-bit, PC-relative field which must be adjusted by 4. */ |
| 977 | static bfd_reloc_status_type |
| 978 | elf32_i860_relocate_pc26 (bfd *input_bfd, |
| 979 | asection *input_section, |
| 980 | Elf_Internal_Rela *rello, |
| 981 | bfd_byte *contents, |
| 982 | bfd_vma value) |
| 983 | { |
| 984 | bfd_vma insn; |
| 985 | reloc_howto_type *howto; |
| 986 | howto = lookup_howto ((unsigned) ELF32_R_TYPE (rello->r_info)); |
| 987 | insn = bfd_get_32 (input_bfd, contents + rello->r_offset); |
| 988 | |
| 989 | /* Adjust for PC-relative relocation. */ |
| 990 | value -= (input_section->output_section->vma |
| 991 | + input_section->output_offset); |
| 992 | value -= rello->r_offset; |
| 993 | |
| 994 | /* Relocate. */ |
| 995 | value += rello->r_addend; |
| 996 | |
| 997 | /* Adjust value by 4 and insert the field. */ |
| 998 | value = ((value - 4) >> howto->rightshift) & howto->dst_mask; |
| 999 | insn = (insn & ~howto->dst_mask) | value; |
| 1000 | |
| 1001 | bfd_put_32 (input_bfd, insn, contents + rello->r_offset); |
| 1002 | return bfd_reloc_ok; |
| 1003 | |
| 1004 | } |
| 1005 | |
| 1006 | /* Specialized relocation handler for R_860_HIGHADJ. */ |
| 1007 | static bfd_reloc_status_type |
| 1008 | elf32_i860_relocate_highadj (bfd *input_bfd, |
| 1009 | Elf_Internal_Rela *rel, |
| 1010 | bfd_byte *contents, |
| 1011 | bfd_vma value) |
| 1012 | { |
| 1013 | bfd_vma insn; |
| 1014 | |
| 1015 | insn = bfd_get_32 (input_bfd, contents + rel->r_offset); |
| 1016 | |
| 1017 | value += rel->r_addend; |
| 1018 | value += 0x8000; |
| 1019 | value = ((value >> 16) & 0xffff); |
| 1020 | |
| 1021 | insn = (insn & 0xffff0000) | value; |
| 1022 | |
| 1023 | bfd_put_32 (input_bfd, insn, contents + rel->r_offset); |
| 1024 | return bfd_reloc_ok; |
| 1025 | } |
| 1026 | |
| 1027 | /* Perform a single relocation. By default we use the standard BFD |
| 1028 | routines. However, we handle some specially. */ |
| 1029 | static bfd_reloc_status_type |
| 1030 | i860_final_link_relocate (reloc_howto_type *howto, |
| 1031 | bfd *input_bfd, |
| 1032 | asection *input_section, |
| 1033 | bfd_byte *contents, |
| 1034 | Elf_Internal_Rela *rel, |
| 1035 | bfd_vma relocation) |
| 1036 | { |
| 1037 | return _bfd_final_link_relocate (howto, input_bfd, input_section, |
| 1038 | contents, rel->r_offset, relocation, |
| 1039 | rel->r_addend); |
| 1040 | } |
| 1041 | |
| 1042 | /* Relocate an i860 ELF section. |
| 1043 | |
| 1044 | This is boiler-plate code copied from fr30. |
| 1045 | |
| 1046 | The RELOCATE_SECTION function is called by the new ELF backend linker |
| 1047 | to handle the relocations for a section. |
| 1048 | |
| 1049 | The relocs are always passed as Rela structures; if the section |
| 1050 | actually uses Rel structures, the r_addend field will always be |
| 1051 | zero. |
| 1052 | |
| 1053 | This function is responsible for adjusting the section contents as |
| 1054 | necessary, and (if using Rela relocs and generating a relocatable |
| 1055 | output file) adjusting the reloc addend as necessary. |
| 1056 | |
| 1057 | This function does not have to worry about setting the reloc |
| 1058 | address or the reloc symbol index. |
| 1059 | |
| 1060 | LOCAL_SYMS is a pointer to the swapped in local symbols. |
| 1061 | |
| 1062 | LOCAL_SECTIONS is an array giving the section in the input file |
| 1063 | corresponding to the st_shndx field of each local symbol. |
| 1064 | |
| 1065 | The global hash table entry for the global symbols can be found |
| 1066 | via elf_sym_hashes (input_bfd). |
| 1067 | |
| 1068 | When generating relocatable output, this function must handle |
| 1069 | STB_LOCAL/STT_SECTION symbols specially. The output symbol is |
| 1070 | going to be the section symbol corresponding to the output |
| 1071 | section, which means that the addend must be adjusted |
| 1072 | accordingly. */ |
| 1073 | static bfd_boolean |
| 1074 | elf32_i860_relocate_section (bfd *output_bfd ATTRIBUTE_UNUSED, |
| 1075 | struct bfd_link_info *info, |
| 1076 | bfd *input_bfd, |
| 1077 | asection *input_section, |
| 1078 | bfd_byte *contents, |
| 1079 | Elf_Internal_Rela *relocs, |
| 1080 | Elf_Internal_Sym *local_syms, |
| 1081 | asection **local_sections) |
| 1082 | { |
| 1083 | Elf_Internal_Shdr *symtab_hdr; |
| 1084 | struct elf_link_hash_entry **sym_hashes; |
| 1085 | Elf_Internal_Rela *rel; |
| 1086 | Elf_Internal_Rela *relend; |
| 1087 | |
| 1088 | symtab_hdr = & elf_tdata (input_bfd)->symtab_hdr; |
| 1089 | sym_hashes = elf_sym_hashes (input_bfd); |
| 1090 | relend = relocs + input_section->reloc_count; |
| 1091 | |
| 1092 | for (rel = relocs; rel < relend; rel ++) |
| 1093 | { |
| 1094 | reloc_howto_type * howto; |
| 1095 | unsigned long r_symndx; |
| 1096 | Elf_Internal_Sym * sym; |
| 1097 | asection * sec; |
| 1098 | struct elf_link_hash_entry * h; |
| 1099 | bfd_vma relocation; |
| 1100 | bfd_reloc_status_type r; |
| 1101 | const char * name = NULL; |
| 1102 | int r_type; |
| 1103 | |
| 1104 | r_type = ELF32_R_TYPE (rel->r_info); |
| 1105 | r_symndx = ELF32_R_SYM (rel->r_info); |
| 1106 | |
| 1107 | howto = lookup_howto ((unsigned) ELF32_R_TYPE (rel->r_info)); |
| 1108 | h = NULL; |
| 1109 | sym = NULL; |
| 1110 | sec = NULL; |
| 1111 | |
| 1112 | if (r_symndx < symtab_hdr->sh_info) |
| 1113 | { |
| 1114 | sym = local_syms + r_symndx; |
| 1115 | sec = local_sections [r_symndx]; |
| 1116 | relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel); |
| 1117 | |
| 1118 | name = bfd_elf_string_from_elf_section |
| 1119 | (input_bfd, symtab_hdr->sh_link, sym->st_name); |
| 1120 | name = (name == NULL) ? bfd_section_name (input_bfd, sec) : name; |
| 1121 | } |
| 1122 | else |
| 1123 | { |
| 1124 | bfd_boolean unresolved_reloc, warned; |
| 1125 | |
| 1126 | RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel, |
| 1127 | r_symndx, symtab_hdr, sym_hashes, |
| 1128 | h, sec, relocation, |
| 1129 | unresolved_reloc, warned); |
| 1130 | } |
| 1131 | |
| 1132 | if (sec != NULL && discarded_section (sec)) |
| 1133 | RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section, |
| 1134 | rel, 1, relend, howto, 0, contents); |
| 1135 | |
| 1136 | if (info->relocatable) |
| 1137 | continue; |
| 1138 | |
| 1139 | switch (r_type) |
| 1140 | { |
| 1141 | default: |
| 1142 | r = i860_final_link_relocate (howto, input_bfd, input_section, |
| 1143 | contents, rel, relocation); |
| 1144 | break; |
| 1145 | |
| 1146 | case R_860_HIGHADJ: |
| 1147 | r = elf32_i860_relocate_highadj (input_bfd, rel, contents, |
| 1148 | relocation); |
| 1149 | break; |
| 1150 | |
| 1151 | case R_860_PC16: |
| 1152 | r = elf32_i860_relocate_pc16 (input_bfd, input_section, rel, |
| 1153 | contents, relocation); |
| 1154 | break; |
| 1155 | |
| 1156 | case R_860_PC26: |
| 1157 | r = elf32_i860_relocate_pc26 (input_bfd, input_section, rel, |
| 1158 | contents, relocation); |
| 1159 | break; |
| 1160 | |
| 1161 | case R_860_SPLIT0: |
| 1162 | case R_860_SPLIT1: |
| 1163 | case R_860_SPLIT2: |
| 1164 | r = elf32_i860_relocate_splitn (input_bfd, rel, contents, |
| 1165 | relocation); |
| 1166 | break; |
| 1167 | |
| 1168 | /* We do not yet handle GOT/PLT/Dynamic relocations. */ |
| 1169 | case R_860_COPY: |
| 1170 | case R_860_GLOB_DAT: |
| 1171 | case R_860_JUMP_SLOT: |
| 1172 | case R_860_RELATIVE: |
| 1173 | case R_860_PLT26: |
| 1174 | case R_860_LOGOT0: |
| 1175 | case R_860_SPGOT0: |
| 1176 | case R_860_LOGOT1: |
| 1177 | case R_860_SPGOT1: |
| 1178 | case R_860_LOGOTOFF0: |
| 1179 | case R_860_SPGOTOFF0: |
| 1180 | case R_860_LOGOTOFF1: |
| 1181 | case R_860_SPGOTOFF1: |
| 1182 | case R_860_LOGOTOFF2: |
| 1183 | case R_860_LOGOTOFF3: |
| 1184 | case R_860_LOPC: |
| 1185 | case R_860_HAGOT: |
| 1186 | case R_860_HAGOTOFF: |
| 1187 | case R_860_HAPC: |
| 1188 | case R_860_HIGOT: |
| 1189 | case R_860_HIGOTOFF: |
| 1190 | r = bfd_reloc_notsupported; |
| 1191 | break; |
| 1192 | } |
| 1193 | |
| 1194 | if (r != bfd_reloc_ok) |
| 1195 | { |
| 1196 | const char * msg = (const char *) NULL; |
| 1197 | |
| 1198 | switch (r) |
| 1199 | { |
| 1200 | case bfd_reloc_overflow: |
| 1201 | r = info->callbacks->reloc_overflow |
| 1202 | (info, (h ? &h->root : NULL), name, howto->name, |
| 1203 | (bfd_vma) 0, input_bfd, input_section, rel->r_offset); |
| 1204 | break; |
| 1205 | |
| 1206 | case bfd_reloc_undefined: |
| 1207 | r = info->callbacks->undefined_symbol |
| 1208 | (info, name, input_bfd, input_section, rel->r_offset, TRUE); |
| 1209 | break; |
| 1210 | |
| 1211 | case bfd_reloc_outofrange: |
| 1212 | msg = _("internal error: out of range error"); |
| 1213 | break; |
| 1214 | |
| 1215 | case bfd_reloc_notsupported: |
| 1216 | msg = _("internal error: unsupported relocation error"); |
| 1217 | break; |
| 1218 | |
| 1219 | case bfd_reloc_dangerous: |
| 1220 | msg = _("internal error: dangerous relocation"); |
| 1221 | break; |
| 1222 | |
| 1223 | default: |
| 1224 | msg = _("internal error: unknown error"); |
| 1225 | break; |
| 1226 | } |
| 1227 | |
| 1228 | if (msg) |
| 1229 | r = info->callbacks->warning |
| 1230 | (info, msg, name, input_bfd, input_section, rel->r_offset); |
| 1231 | |
| 1232 | if (! r) |
| 1233 | return FALSE; |
| 1234 | } |
| 1235 | } |
| 1236 | |
| 1237 | return TRUE; |
| 1238 | } |
| 1239 | |
| 1240 | /* Return whether a symbol name implies a local label. SVR4/860 compilers |
| 1241 | generate labels of the form ".ep.function_name" to denote the end of a |
| 1242 | function prolog. These should be local. |
| 1243 | ??? Do any other SVR4 compilers have this convention? If so, this should |
| 1244 | be added to the generic routine. */ |
| 1245 | static bfd_boolean |
| 1246 | elf32_i860_is_local_label_name (bfd *abfd, const char *name) |
| 1247 | { |
| 1248 | if (name[0] == '.' && name[1] == 'e' && name[2] == 'p' && name[3] == '.') |
| 1249 | return TRUE; |
| 1250 | |
| 1251 | return _bfd_elf_is_local_label_name (abfd, name); |
| 1252 | } |
| 1253 | \f |
| 1254 | #define TARGET_BIG_SYM bfd_elf32_i860_vec |
| 1255 | #define TARGET_BIG_NAME "elf32-i860" |
| 1256 | #define TARGET_LITTLE_SYM bfd_elf32_i860_little_vec |
| 1257 | #define TARGET_LITTLE_NAME "elf32-i860-little" |
| 1258 | #define ELF_ARCH bfd_arch_i860 |
| 1259 | #define ELF_MACHINE_CODE EM_860 |
| 1260 | #define ELF_MAXPAGESIZE 4096 |
| 1261 | |
| 1262 | #define elf_backend_rela_normal 1 |
| 1263 | #define elf_info_to_howto_rel NULL |
| 1264 | #define elf_info_to_howto elf32_i860_info_to_howto_rela |
| 1265 | #define elf_backend_relocate_section elf32_i860_relocate_section |
| 1266 | #define bfd_elf32_bfd_reloc_type_lookup elf32_i860_reloc_type_lookup |
| 1267 | #define bfd_elf32_bfd_reloc_name_lookup elf32_i860_reloc_name_lookup |
| 1268 | #define bfd_elf32_bfd_is_local_label_name elf32_i860_is_local_label_name |
| 1269 | |
| 1270 | #include "elf32-target.h" |