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