| 1 | /* Or1k-specific support for 32-bit ELF. |
| 2 | Copyright (C) 2001-2018 Free Software Foundation, Inc. |
| 3 | Contributed for OR32 by Johan Rydberg, jrydberg@opencores.org |
| 4 | |
| 5 | PIC parts added by Stefan Kristiansson, stefan.kristiansson@saunalahti.fi, |
| 6 | largely based on elf32-m32r.c and elf32-microblaze.c. |
| 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, see <http://www.gnu.org/licenses/>. */ |
| 22 | |
| 23 | #include "sysdep.h" |
| 24 | #include "bfd.h" |
| 25 | #include "libbfd.h" |
| 26 | #include "elf-bfd.h" |
| 27 | #include "elf/or1k.h" |
| 28 | #include "libiberty.h" |
| 29 | |
| 30 | #define PLT_ENTRY_SIZE 20 |
| 31 | |
| 32 | #define PLT0_ENTRY_WORD0 0x19800000 /* l.movhi r12, 0 <- hi(.got+4) */ |
| 33 | #define PLT0_ENTRY_WORD1 0xa98c0000 /* l.ori r12, r12, 0 <- lo(.got+4) */ |
| 34 | #define PLT0_ENTRY_WORD2 0x85ec0004 /* l.lwz r15, 4(r12) <- *(.got+8)*/ |
| 35 | #define PLT0_ENTRY_WORD3 0x44007800 /* l.jr r15 */ |
| 36 | #define PLT0_ENTRY_WORD4 0x858c0000 /* l.lwz r12, 0(r12) */ |
| 37 | |
| 38 | #define PLT0_PIC_ENTRY_WORD0 0x85900004 /* l.lwz r12, 4(r16) */ |
| 39 | #define PLT0_PIC_ENTRY_WORD1 0x85f00008 /* l.lwz r15, 8(r16) */ |
| 40 | #define PLT0_PIC_ENTRY_WORD2 0x44007800 /* l.jr r15 */ |
| 41 | #define PLT0_PIC_ENTRY_WORD3 0x15000000 /* l.nop */ |
| 42 | #define PLT0_PIC_ENTRY_WORD4 0x15000000 /* l.nop */ |
| 43 | |
| 44 | #define PLT_ENTRY_WORD0 0x19800000 /* l.movhi r12, 0 <- hi(got idx addr) */ |
| 45 | #define PLT_ENTRY_WORD1 0xa98c0000 /* l.ori r12, r12, 0 <- lo(got idx addr) */ |
| 46 | #define PLT_ENTRY_WORD2 0x858c0000 /* l.lwz r12, 0(r12) */ |
| 47 | #define PLT_ENTRY_WORD3 0x44006000 /* l.jr r12 */ |
| 48 | #define PLT_ENTRY_WORD4 0xa9600000 /* l.ori r11, r0, 0 <- reloc offset */ |
| 49 | |
| 50 | #define PLT_PIC_ENTRY_WORD0 0x85900000 /* l.lwz r12, 0(r16) <- index in got */ |
| 51 | #define PLT_PIC_ENTRY_WORD1 0xa9600000 /* l.ori r11, r0, 0 <- reloc offset */ |
| 52 | #define PLT_PIC_ENTRY_WORD2 0x44006000 /* l.jr r12 */ |
| 53 | #define PLT_PIC_ENTRY_WORD3 0x15000000 /* l.nop */ |
| 54 | #define PLT_PIC_ENTRY_WORD4 0x15000000 /* l.nop */ |
| 55 | |
| 56 | #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1" |
| 57 | |
| 58 | static reloc_howto_type or1k_elf_howto_table[] = |
| 59 | { |
| 60 | /* This reloc does nothing. */ |
| 61 | HOWTO (R_OR1K_NONE, /* type */ |
| 62 | 0, /* rightshift */ |
| 63 | 3, /* size (0 = byte, 1 = short, 2 = long) */ |
| 64 | 0, /* bitsize */ |
| 65 | FALSE, /* pc_relative */ |
| 66 | 0, /* bitpos */ |
| 67 | complain_overflow_dont, /* complain_on_overflow */ |
| 68 | bfd_elf_generic_reloc, /* special_function */ |
| 69 | "R_OR1K_NONE", /* name */ |
| 70 | FALSE, /* partial_inplace */ |
| 71 | 0, /* src_mask */ |
| 72 | 0, /* dst_mask */ |
| 73 | FALSE), /* pcrel_offset */ |
| 74 | |
| 75 | HOWTO (R_OR1K_32, |
| 76 | 0, /* rightshift */ |
| 77 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 78 | 32, /* bitsize */ |
| 79 | FALSE, /* pc_relative */ |
| 80 | 0, /* bitpos */ |
| 81 | complain_overflow_unsigned, /* complain_on_overflow */ |
| 82 | bfd_elf_generic_reloc, /* special_function */ |
| 83 | "R_OR1K_32", /* name */ |
| 84 | FALSE, /* partial_inplace */ |
| 85 | 0, /* src_mask */ |
| 86 | 0xffffffff, /* dst_mask */ |
| 87 | FALSE), /* pcrel_offset */ |
| 88 | |
| 89 | HOWTO (R_OR1K_16, |
| 90 | 0, /* rightshift */ |
| 91 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
| 92 | 16, /* bitsize */ |
| 93 | FALSE, /* pc_relative */ |
| 94 | 0, /* bitpos */ |
| 95 | complain_overflow_unsigned, /* complain_on_overflow */ |
| 96 | bfd_elf_generic_reloc, /* special_function */ |
| 97 | "R_OR1K_16", /* name */ |
| 98 | FALSE, /* partial_inplace */ |
| 99 | 0, /* src_mask */ |
| 100 | 0xffff, /* dst_mask */ |
| 101 | FALSE), /* pcrel_offset */ |
| 102 | |
| 103 | HOWTO (R_OR1K_8, |
| 104 | 0, /* rightshift */ |
| 105 | 0, /* size (0 = byte, 1 = short, 2 = long) */ |
| 106 | 8, /* bitsize */ |
| 107 | FALSE, /* pc_relative */ |
| 108 | 0, /* bitpos */ |
| 109 | complain_overflow_unsigned, /* complain_on_overflow */ |
| 110 | bfd_elf_generic_reloc, /* special_function */ |
| 111 | "R_OR1K_8", /* name */ |
| 112 | FALSE, /* partial_inplace */ |
| 113 | 0, /* src_mask */ |
| 114 | 0xff, /* dst_mask */ |
| 115 | FALSE), /* pcrel_offset */ |
| 116 | |
| 117 | HOWTO (R_OR1K_LO_16_IN_INSN, /* type */ |
| 118 | 0, /* rightshift */ |
| 119 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 120 | 16, /* bitsize */ |
| 121 | FALSE, /* pc_relative */ |
| 122 | 0, /* bitpos */ |
| 123 | complain_overflow_dont, /* complain_on_overflow */ |
| 124 | bfd_elf_generic_reloc, /* special_function */ |
| 125 | "R_OR1K_LO_16_IN_INSN", /* name */ |
| 126 | FALSE, /* partial_inplace */ |
| 127 | 0, /* src_mask */ |
| 128 | 0x0000ffff, /* dst_mask */ |
| 129 | FALSE), /* pcrel_offset */ |
| 130 | |
| 131 | HOWTO (R_OR1K_HI_16_IN_INSN, /* type */ |
| 132 | 16, /* rightshift */ |
| 133 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 134 | 16, /* bitsize */ |
| 135 | FALSE, /* pc_relative */ |
| 136 | 0, /* bitpos */ |
| 137 | complain_overflow_dont, /* complain_on_overflow */ |
| 138 | bfd_elf_generic_reloc, /* special_function */ |
| 139 | "R_OR1K_HI_16_IN_INSN", /* name */ |
| 140 | FALSE, /* partial_inplace */ |
| 141 | 0, /* src_mask */ |
| 142 | 0x0000ffff, /* dst_mask */ |
| 143 | FALSE), /* pcrel_offset */ |
| 144 | |
| 145 | /* A PC relative 26 bit relocation, right shifted by 2. */ |
| 146 | HOWTO (R_OR1K_INSN_REL_26, /* type */ |
| 147 | 2, /* rightshift */ |
| 148 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 149 | 26, /* bitsize */ |
| 150 | TRUE, /* pc_relative */ |
| 151 | 0, /* bitpos */ |
| 152 | complain_overflow_signed, /* complain_on_overflow */ |
| 153 | bfd_elf_generic_reloc, /* special_function */ |
| 154 | "R_OR1K_INSN_REL_26", /* name */ |
| 155 | FALSE, /* partial_inplace */ |
| 156 | 0, /* src_mask */ |
| 157 | 0x03ffffff, /* dst_mask */ |
| 158 | TRUE), /* pcrel_offset */ |
| 159 | |
| 160 | /* GNU extension to record C++ vtable hierarchy. */ |
| 161 | HOWTO (R_OR1K_GNU_VTINHERIT, /* type */ |
| 162 | 0, /* rightshift */ |
| 163 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 164 | 0, /* bitsize */ |
| 165 | FALSE, /* pc_relative */ |
| 166 | 0, /* bitpos */ |
| 167 | complain_overflow_dont, /* complain_on_overflow */ |
| 168 | NULL, /* special_function */ |
| 169 | "R_OR1K_GNU_VTINHERIT", /* name */ |
| 170 | FALSE, /* partial_inplace */ |
| 171 | 0, /* src_mask */ |
| 172 | 0, /* dst_mask */ |
| 173 | FALSE), /* pcrel_offset */ |
| 174 | |
| 175 | /* GNU extension to record C++ vtable member usage. */ |
| 176 | HOWTO (R_OR1K_GNU_VTENTRY, /* type */ |
| 177 | 0, /* rightshift */ |
| 178 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 179 | 0, /* bitsize */ |
| 180 | FALSE, /* pc_relative */ |
| 181 | 0, /* bitpos */ |
| 182 | complain_overflow_dont, /* complain_on_overflow */ |
| 183 | _bfd_elf_rel_vtable_reloc_fn, /* special_function */ |
| 184 | "R_OR1K_GNU_VTENTRY", /* name */ |
| 185 | FALSE, /* partial_inplace */ |
| 186 | 0, /* src_mask */ |
| 187 | 0, /* dst_mask */ |
| 188 | FALSE), /* pcrel_offset */ |
| 189 | |
| 190 | HOWTO (R_OR1K_32_PCREL, |
| 191 | 0, /* rightshift */ |
| 192 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 193 | 32, /* bitsize */ |
| 194 | TRUE, /* pc_relative */ |
| 195 | 0, /* bitpos */ |
| 196 | complain_overflow_signed, /* complain_on_overflow */ |
| 197 | bfd_elf_generic_reloc, /* special_function */ |
| 198 | "R_OR1K_32_PCREL", /* name */ |
| 199 | FALSE, /* partial_inplace */ |
| 200 | 0, /* src_mask */ |
| 201 | 0xffffffff, /* dst_mask */ |
| 202 | TRUE), /* pcrel_offset */ |
| 203 | |
| 204 | HOWTO (R_OR1K_16_PCREL, |
| 205 | 0, /* rightshift */ |
| 206 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
| 207 | 16, /* bitsize */ |
| 208 | TRUE, /* pc_relative */ |
| 209 | 0, /* bitpos */ |
| 210 | complain_overflow_signed, /* complain_on_overflow */ |
| 211 | bfd_elf_generic_reloc, /* special_function */ |
| 212 | "R_OR1K_16_PCREL", /* name */ |
| 213 | FALSE, /* partial_inplace */ |
| 214 | 0, /* src_mask */ |
| 215 | 0xffff, /* dst_mask */ |
| 216 | TRUE), /* pcrel_offset */ |
| 217 | |
| 218 | HOWTO (R_OR1K_8_PCREL, |
| 219 | 0, /* rightshift */ |
| 220 | 0, /* size (0 = byte, 1 = short, 2 = long) */ |
| 221 | 8, /* bitsize */ |
| 222 | TRUE, /* pc_relative */ |
| 223 | 0, /* bitpos */ |
| 224 | complain_overflow_signed, /* complain_on_overflow */ |
| 225 | bfd_elf_generic_reloc, /* special_function */ |
| 226 | "R_OR1K_8_PCREL", /* name */ |
| 227 | FALSE, /* partial_inplace */ |
| 228 | 0, /* src_mask */ |
| 229 | 0xff, /* dst_mask */ |
| 230 | TRUE), /* pcrel_offset */ |
| 231 | |
| 232 | HOWTO (R_OR1K_GOTPC_HI16, /* Type. */ |
| 233 | 16, /* Rightshift. */ |
| 234 | 2, /* Size (0 = byte, 1 = short, 2 = long). */ |
| 235 | 16, /* Bitsize. */ |
| 236 | TRUE, /* PC_relative. */ |
| 237 | 0, /* Bitpos. */ |
| 238 | complain_overflow_dont, /* Complain on overflow. */ |
| 239 | bfd_elf_generic_reloc, /* Special Function. */ |
| 240 | "R_OR1K_GOTPC_HI16", /* Name. */ |
| 241 | FALSE, /* Partial Inplace. */ |
| 242 | 0, /* Source Mask. */ |
| 243 | 0xffff, /* Dest Mask. */ |
| 244 | TRUE), /* PC relative offset? */ |
| 245 | |
| 246 | HOWTO (R_OR1K_GOTPC_LO16, /* Type. */ |
| 247 | 0, /* Rightshift. */ |
| 248 | 2, /* Size (0 = byte, 1 = short, 2 = long). */ |
| 249 | 16, /* Bitsize. */ |
| 250 | TRUE, /* PC_relative. */ |
| 251 | 0, /* Bitpos. */ |
| 252 | complain_overflow_dont, /* Complain on overflow. */ |
| 253 | bfd_elf_generic_reloc, /* Special Function. */ |
| 254 | "R_OR1K_GOTPC_LO16", /* Name. */ |
| 255 | FALSE, /* Partial Inplace. */ |
| 256 | 0, /* Source Mask. */ |
| 257 | 0xffff, /* Dest Mask. */ |
| 258 | TRUE), /* PC relative offset? */ |
| 259 | |
| 260 | HOWTO (R_OR1K_GOT16, /* type */ |
| 261 | 0, /* rightshift */ |
| 262 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 263 | 16, /* bitsize */ |
| 264 | FALSE, /* pc_relative */ |
| 265 | 0, /* bitpos */ |
| 266 | complain_overflow_signed, /* complain_on_overflow */ |
| 267 | bfd_elf_generic_reloc, /* special_function */ |
| 268 | "R_OR1K_GOT16", /* name */ |
| 269 | FALSE, /* partial_inplace */ |
| 270 | 0, /* src_mask */ |
| 271 | 0xffff, /* dst_mask */ |
| 272 | FALSE), /* pcrel_offset */ |
| 273 | |
| 274 | /* A 26 bit PLT relocation. Shifted by 2. */ |
| 275 | HOWTO (R_OR1K_PLT26, /* Type. */ |
| 276 | 2, /* Rightshift. */ |
| 277 | 2, /* Size (0 = byte, 1 = short, 2 = long). */ |
| 278 | 26, /* Bitsize. */ |
| 279 | TRUE, /* PC_relative. */ |
| 280 | 0, /* Bitpos. */ |
| 281 | complain_overflow_dont, /* Complain on overflow. */ |
| 282 | bfd_elf_generic_reloc,/* Special Function. */ |
| 283 | "R_OR1K_PLT26", /* Name. */ |
| 284 | FALSE, /* Partial Inplace. */ |
| 285 | 0, /* Source Mask. */ |
| 286 | 0x03ffffff, /* Dest Mask. */ |
| 287 | TRUE), /* PC relative offset? */ |
| 288 | |
| 289 | HOWTO (R_OR1K_GOTOFF_HI16, /* type */ |
| 290 | 16, /* rightshift */ |
| 291 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 292 | 16, /* bitsize */ |
| 293 | FALSE, /* pc_relative */ |
| 294 | 0, /* bitpos */ |
| 295 | complain_overflow_dont, /* complain_on_overflow */ |
| 296 | bfd_elf_generic_reloc, /* special_function */ |
| 297 | "R_OR1K_GOTOFF_HI16", /* name */ |
| 298 | FALSE, /* partial_inplace */ |
| 299 | 0x0, /* src_mask */ |
| 300 | 0xffff, /* dst_mask */ |
| 301 | FALSE), /* pcrel_offset */ |
| 302 | |
| 303 | HOWTO (R_OR1K_GOTOFF_LO16, /* type */ |
| 304 | 0, /* rightshift */ |
| 305 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 306 | 16, /* bitsize */ |
| 307 | FALSE, /* pc_relative */ |
| 308 | 0, /* bitpos */ |
| 309 | complain_overflow_dont, /* complain_on_overflow */ |
| 310 | bfd_elf_generic_reloc, /* special_function */ |
| 311 | "R_OR1K_GOTOFF_LO16", /* name */ |
| 312 | FALSE, /* partial_inplace */ |
| 313 | 0x0, /* src_mask */ |
| 314 | 0xffff, /* dst_mask */ |
| 315 | FALSE), /* pcrel_offset */ |
| 316 | |
| 317 | HOWTO (R_OR1K_COPY, /* type */ |
| 318 | 0, /* rightshift */ |
| 319 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 320 | 32, /* bitsize */ |
| 321 | FALSE, /* pc_relative */ |
| 322 | 0, /* bitpos */ |
| 323 | complain_overflow_bitfield, /* complain_on_overflow */ |
| 324 | bfd_elf_generic_reloc, /* special_function */ |
| 325 | "R_OR1K_COPY", /* name */ |
| 326 | FALSE, /* partial_inplace */ |
| 327 | 0xffffffff, /* src_mask */ |
| 328 | 0xffffffff, /* dst_mask */ |
| 329 | FALSE), /* pcrel_offset */ |
| 330 | |
| 331 | HOWTO (R_OR1K_GLOB_DAT, /* type */ |
| 332 | 0, /* rightshift */ |
| 333 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 334 | 32, /* bitsize */ |
| 335 | FALSE, /* pc_relative */ |
| 336 | 0, /* bitpos */ |
| 337 | complain_overflow_bitfield, /* complain_on_overflow */ |
| 338 | bfd_elf_generic_reloc, /* special_function */ |
| 339 | "R_OR1K_GLOB_DAT", /* name */ |
| 340 | FALSE, /* partial_inplace */ |
| 341 | 0xffffffff, /* src_mask */ |
| 342 | 0xffffffff, /* dst_mask */ |
| 343 | FALSE), /* pcrel_offset */ |
| 344 | |
| 345 | HOWTO (R_OR1K_JMP_SLOT, /* type */ |
| 346 | 0, /* rightshift */ |
| 347 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 348 | 32, /* bitsize */ |
| 349 | FALSE, /* pc_relative */ |
| 350 | 0, /* bitpos */ |
| 351 | complain_overflow_bitfield, /* complain_on_overflow */ |
| 352 | bfd_elf_generic_reloc, /* special_function */ |
| 353 | "R_OR1K_JMP_SLOT", /* name */ |
| 354 | FALSE, /* partial_inplace */ |
| 355 | 0xffffffff, /* src_mask */ |
| 356 | 0xffffffff, /* dst_mask */ |
| 357 | FALSE), /* pcrel_offset */ |
| 358 | |
| 359 | HOWTO (R_OR1K_RELATIVE, /* type */ |
| 360 | 0, /* rightshift */ |
| 361 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 362 | 32, /* bitsize */ |
| 363 | FALSE, /* pc_relative */ |
| 364 | 0, /* bitpos */ |
| 365 | complain_overflow_bitfield, /* complain_on_overflow */ |
| 366 | bfd_elf_generic_reloc, /* special_function */ |
| 367 | "R_OR1K_RELATIVE", /* name */ |
| 368 | FALSE, /* partial_inplace */ |
| 369 | 0xffffffff, /* src_mask */ |
| 370 | 0xffffffff, /* dst_mask */ |
| 371 | FALSE), /* pcrel_offset */ |
| 372 | |
| 373 | HOWTO (R_OR1K_TLS_GD_HI16, /* type */ |
| 374 | 16, /* rightshift */ |
| 375 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 376 | 16, /* bitsize */ |
| 377 | FALSE, /* pc_relative */ |
| 378 | 0, /* bitpos */ |
| 379 | complain_overflow_dont, /* complain_on_overflow */ |
| 380 | bfd_elf_generic_reloc, /* special_function */ |
| 381 | "R_OR1K_TLS_GD_HI16", /* name */ |
| 382 | FALSE, /* partial_inplace */ |
| 383 | 0x0, /* src_mask */ |
| 384 | 0xffff, /* dst_mask */ |
| 385 | FALSE), /* pcrel_offset */ |
| 386 | |
| 387 | HOWTO (R_OR1K_TLS_GD_LO16, /* type */ |
| 388 | 0, /* rightshift */ |
| 389 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 390 | 16, /* bitsize */ |
| 391 | FALSE, /* pc_relative */ |
| 392 | 0, /* bitpos */ |
| 393 | complain_overflow_dont, /* complain_on_overflow */ |
| 394 | bfd_elf_generic_reloc, /* special_function */ |
| 395 | "R_OR1K_TLS_GD_LO16", /* name */ |
| 396 | FALSE, /* partial_inplace */ |
| 397 | 0x0, /* src_mask */ |
| 398 | 0xffff, /* dst_mask */ |
| 399 | FALSE), /* pcrel_offset */ |
| 400 | |
| 401 | HOWTO (R_OR1K_TLS_LDM_HI16, /* type */ |
| 402 | 16, /* rightshift */ |
| 403 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 404 | 16, /* bitsize */ |
| 405 | FALSE, /* pc_relative */ |
| 406 | 0, /* bitpos */ |
| 407 | complain_overflow_dont, /* complain_on_overflow */ |
| 408 | bfd_elf_generic_reloc, /* special_function */ |
| 409 | "R_OR1K_TLS_LDM_HI16", /* name */ |
| 410 | FALSE, /* partial_inplace */ |
| 411 | 0x0, /* src_mask */ |
| 412 | 0xffff, /* dst_mask */ |
| 413 | FALSE), /* pcrel_offset */ |
| 414 | |
| 415 | HOWTO (R_OR1K_TLS_LDM_LO16, /* type */ |
| 416 | 0, /* rightshift */ |
| 417 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 418 | 16, /* bitsize */ |
| 419 | FALSE, /* pc_relative */ |
| 420 | 0, /* bitpos */ |
| 421 | complain_overflow_dont, /* complain_on_overflow */ |
| 422 | bfd_elf_generic_reloc, /* special_function */ |
| 423 | "R_OR1K_TLS_LDM_LO16", /* name */ |
| 424 | FALSE, /* partial_inplace */ |
| 425 | 0x0, /* src_mask */ |
| 426 | 0xffff, /* dst_mask */ |
| 427 | FALSE), /* pcrel_offset */ |
| 428 | |
| 429 | HOWTO (R_OR1K_TLS_LDO_HI16, /* type */ |
| 430 | 16, /* rightshift */ |
| 431 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 432 | 16, /* bitsize */ |
| 433 | FALSE, /* pc_relative */ |
| 434 | 0, /* bitpos */ |
| 435 | complain_overflow_dont, /* complain_on_overflow */ |
| 436 | bfd_elf_generic_reloc, /* special_function */ |
| 437 | "R_OR1K_TLS_LDO_HI16", /* name */ |
| 438 | FALSE, /* partial_inplace */ |
| 439 | 0x0, /* src_mask */ |
| 440 | 0xffff, /* dst_mask */ |
| 441 | FALSE), /* pcrel_offset */ |
| 442 | |
| 443 | HOWTO (R_OR1K_TLS_LDO_LO16, /* type */ |
| 444 | 0, /* rightshift */ |
| 445 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 446 | 16, /* bitsize */ |
| 447 | FALSE, /* pc_relative */ |
| 448 | 0, /* bitpos */ |
| 449 | complain_overflow_dont, /* complain_on_overflow */ |
| 450 | bfd_elf_generic_reloc, /* special_function */ |
| 451 | "R_OR1K_TLS_LDO_LO16", /* name */ |
| 452 | FALSE, /* partial_inplace */ |
| 453 | 0x0, /* src_mask */ |
| 454 | 0xffff, /* dst_mask */ |
| 455 | FALSE), /* pcrel_offset */ |
| 456 | |
| 457 | HOWTO (R_OR1K_TLS_IE_HI16, /* type */ |
| 458 | 16, /* rightshift */ |
| 459 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 460 | 16, /* bitsize */ |
| 461 | FALSE, /* pc_relative */ |
| 462 | 0, /* bitpos */ |
| 463 | complain_overflow_dont, /* complain_on_overflow */ |
| 464 | bfd_elf_generic_reloc, /* special_function */ |
| 465 | "R_OR1K_TLS_IE_HI16", /* name */ |
| 466 | FALSE, /* partial_inplace */ |
| 467 | 0x0, /* src_mask */ |
| 468 | 0xffff, /* dst_mask */ |
| 469 | FALSE), /* pcrel_offset */ |
| 470 | |
| 471 | HOWTO (R_OR1K_TLS_IE_LO16, /* type */ |
| 472 | 0, /* rightshift */ |
| 473 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 474 | 16, /* bitsize */ |
| 475 | FALSE, /* pc_relative */ |
| 476 | 0, /* bitpos */ |
| 477 | complain_overflow_dont, /* complain_on_overflow */ |
| 478 | bfd_elf_generic_reloc, /* special_function */ |
| 479 | "R_OR1K_TLS_IE_LO16", /* name */ |
| 480 | FALSE, /* partial_inplace */ |
| 481 | 0x0, /* src_mask */ |
| 482 | 0xffff, /* dst_mask */ |
| 483 | FALSE), /* pcrel_offset */ |
| 484 | |
| 485 | HOWTO (R_OR1K_TLS_LE_HI16, /* type */ |
| 486 | 16, /* rightshift */ |
| 487 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 488 | 16, /* bitsize */ |
| 489 | FALSE, /* pc_relative */ |
| 490 | 0, /* bitpos */ |
| 491 | complain_overflow_dont, /* complain_on_overflow */ |
| 492 | bfd_elf_generic_reloc, /* special_function */ |
| 493 | "R_OR1K_TLS_LE_HI16", /* name */ |
| 494 | FALSE, /* partial_inplace */ |
| 495 | 0x0, /* src_mask */ |
| 496 | 0xffff, /* dst_mask */ |
| 497 | FALSE), /* pcrel_offset */ |
| 498 | |
| 499 | HOWTO (R_OR1K_TLS_LE_LO16, /* type */ |
| 500 | 0, /* rightshift */ |
| 501 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 502 | 16, /* bitsize */ |
| 503 | FALSE, /* pc_relative */ |
| 504 | 0, /* bitpos */ |
| 505 | complain_overflow_dont, /* complain_on_overflow */ |
| 506 | bfd_elf_generic_reloc, /* special_function */ |
| 507 | "R_OR1K_TLS_LE_LO16", /* name */ |
| 508 | FALSE, /* partial_inplace */ |
| 509 | 0x0, /* src_mask */ |
| 510 | 0xffff, /* dst_mask */ |
| 511 | FALSE), /* pcrel_offset */ |
| 512 | |
| 513 | }; |
| 514 | |
| 515 | /* Map BFD reloc types to Or1k ELF reloc types. */ |
| 516 | |
| 517 | struct or1k_reloc_map |
| 518 | { |
| 519 | bfd_reloc_code_real_type bfd_reloc_val; |
| 520 | unsigned int or1k_reloc_val; |
| 521 | }; |
| 522 | |
| 523 | static const struct or1k_reloc_map or1k_reloc_map[] = |
| 524 | { |
| 525 | { BFD_RELOC_NONE, R_OR1K_NONE }, |
| 526 | { BFD_RELOC_32, R_OR1K_32 }, |
| 527 | { BFD_RELOC_16, R_OR1K_16 }, |
| 528 | { BFD_RELOC_8, R_OR1K_8 }, |
| 529 | { BFD_RELOC_LO16, R_OR1K_LO_16_IN_INSN }, |
| 530 | { BFD_RELOC_HI16, R_OR1K_HI_16_IN_INSN }, |
| 531 | { BFD_RELOC_OR1K_REL_26, R_OR1K_INSN_REL_26 }, |
| 532 | { BFD_RELOC_VTABLE_ENTRY, R_OR1K_GNU_VTENTRY }, |
| 533 | { BFD_RELOC_VTABLE_INHERIT, R_OR1K_GNU_VTINHERIT }, |
| 534 | { BFD_RELOC_32_PCREL, R_OR1K_32_PCREL }, |
| 535 | { BFD_RELOC_16_PCREL, R_OR1K_16_PCREL }, |
| 536 | { BFD_RELOC_8_PCREL, R_OR1K_8_PCREL }, |
| 537 | { BFD_RELOC_OR1K_GOTPC_HI16, R_OR1K_GOTPC_HI16 }, |
| 538 | { BFD_RELOC_OR1K_GOTPC_LO16, R_OR1K_GOTPC_LO16 }, |
| 539 | { BFD_RELOC_OR1K_GOT16, R_OR1K_GOT16 }, |
| 540 | { BFD_RELOC_OR1K_PLT26, R_OR1K_PLT26 }, |
| 541 | { BFD_RELOC_OR1K_GOTOFF_HI16, R_OR1K_GOTOFF_HI16 }, |
| 542 | { BFD_RELOC_OR1K_GOTOFF_LO16, R_OR1K_GOTOFF_LO16 }, |
| 543 | { BFD_RELOC_OR1K_GLOB_DAT, R_OR1K_GLOB_DAT }, |
| 544 | { BFD_RELOC_OR1K_COPY, R_OR1K_COPY }, |
| 545 | { BFD_RELOC_OR1K_JMP_SLOT, R_OR1K_JMP_SLOT }, |
| 546 | { BFD_RELOC_OR1K_RELATIVE, R_OR1K_RELATIVE }, |
| 547 | { BFD_RELOC_OR1K_TLS_GD_HI16, R_OR1K_TLS_GD_HI16 }, |
| 548 | { BFD_RELOC_OR1K_TLS_GD_LO16, R_OR1K_TLS_GD_LO16 }, |
| 549 | { BFD_RELOC_OR1K_TLS_LDM_HI16, R_OR1K_TLS_LDM_HI16 }, |
| 550 | { BFD_RELOC_OR1K_TLS_LDM_LO16, R_OR1K_TLS_LDM_LO16 }, |
| 551 | { BFD_RELOC_OR1K_TLS_LDO_HI16, R_OR1K_TLS_LDO_HI16 }, |
| 552 | { BFD_RELOC_OR1K_TLS_LDO_LO16, R_OR1K_TLS_LDO_LO16 }, |
| 553 | { BFD_RELOC_OR1K_TLS_IE_HI16, R_OR1K_TLS_IE_HI16 }, |
| 554 | { BFD_RELOC_OR1K_TLS_IE_LO16, R_OR1K_TLS_IE_LO16 }, |
| 555 | { BFD_RELOC_OR1K_TLS_LE_HI16, R_OR1K_TLS_LE_HI16 }, |
| 556 | { BFD_RELOC_OR1K_TLS_LE_LO16, R_OR1K_TLS_LE_LO16 }, |
| 557 | }; |
| 558 | |
| 559 | #define TLS_UNKNOWN 0 |
| 560 | #define TLS_NONE 1 |
| 561 | #define TLS_GD 2 |
| 562 | #define TLS_LD 3 |
| 563 | #define TLS_IE 4 |
| 564 | #define TLS_LE 5 |
| 565 | |
| 566 | /* ELF linker hash entry. */ |
| 567 | struct elf_or1k_link_hash_entry |
| 568 | { |
| 569 | struct elf_link_hash_entry root; |
| 570 | |
| 571 | /* Track dynamic relocs copied for this symbol. */ |
| 572 | struct elf_dyn_relocs *dyn_relocs; |
| 573 | |
| 574 | /* Track type of TLS access. */ |
| 575 | unsigned char tls_type; |
| 576 | }; |
| 577 | |
| 578 | /* ELF object data. */ |
| 579 | struct elf_or1k_obj_tdata |
| 580 | { |
| 581 | struct elf_obj_tdata root; |
| 582 | |
| 583 | /* tls_type for each local got entry. */ |
| 584 | unsigned char *local_tls_type; |
| 585 | }; |
| 586 | |
| 587 | #define elf_or1k_tdata(abfd) \ |
| 588 | ((struct elf_or1k_obj_tdata *) (abfd)->tdata.any) |
| 589 | |
| 590 | #define elf_or1k_local_tls_type(abfd) \ |
| 591 | (elf_or1k_tdata (abfd)->local_tls_type) |
| 592 | |
| 593 | /* ELF linker hash table. */ |
| 594 | struct elf_or1k_link_hash_table |
| 595 | { |
| 596 | struct elf_link_hash_table root; |
| 597 | |
| 598 | /* Small local sym to section mapping cache. */ |
| 599 | struct sym_cache sym_sec; |
| 600 | }; |
| 601 | |
| 602 | /* Get the ELF linker hash table from a link_info structure. */ |
| 603 | #define or1k_elf_hash_table(p) \ |
| 604 | (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \ |
| 605 | == OR1K_ELF_DATA ? ((struct elf_or1k_link_hash_table *) ((p)->hash)) : NULL) |
| 606 | |
| 607 | static bfd_boolean |
| 608 | elf_or1k_mkobject (bfd *abfd) |
| 609 | { |
| 610 | return bfd_elf_allocate_object (abfd, sizeof (struct elf_or1k_obj_tdata), |
| 611 | OR1K_ELF_DATA); |
| 612 | } |
| 613 | |
| 614 | /* Create an entry in an or1k ELF linker hash table. */ |
| 615 | |
| 616 | static struct bfd_hash_entry * |
| 617 | or1k_elf_link_hash_newfunc (struct bfd_hash_entry *entry, |
| 618 | struct bfd_hash_table *table, |
| 619 | const char *string) |
| 620 | { |
| 621 | struct elf_or1k_link_hash_entry *ret = |
| 622 | (struct elf_or1k_link_hash_entry *) entry; |
| 623 | |
| 624 | /* Allocate the structure if it has not already been allocated by a |
| 625 | subclass. */ |
| 626 | if (ret == NULL) |
| 627 | ret = bfd_hash_allocate (table, |
| 628 | sizeof (struct elf_or1k_link_hash_entry)); |
| 629 | if (ret == NULL) |
| 630 | return NULL; |
| 631 | |
| 632 | /* Call the allocation method of the superclass. */ |
| 633 | ret = ((struct elf_or1k_link_hash_entry *) |
| 634 | _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret, |
| 635 | table, string)); |
| 636 | if (ret != NULL) |
| 637 | { |
| 638 | struct elf_or1k_link_hash_entry *eh; |
| 639 | |
| 640 | eh = (struct elf_or1k_link_hash_entry *) ret; |
| 641 | eh->dyn_relocs = NULL; |
| 642 | eh->tls_type = TLS_UNKNOWN; |
| 643 | } |
| 644 | |
| 645 | return (struct bfd_hash_entry *) ret; |
| 646 | } |
| 647 | |
| 648 | /* Create an or1k ELF linker hash table. */ |
| 649 | |
| 650 | static struct bfd_link_hash_table * |
| 651 | or1k_elf_link_hash_table_create (bfd *abfd) |
| 652 | { |
| 653 | struct elf_or1k_link_hash_table *ret; |
| 654 | bfd_size_type amt = sizeof (struct elf_or1k_link_hash_table); |
| 655 | |
| 656 | ret = bfd_zmalloc (amt); |
| 657 | if (ret == NULL) |
| 658 | return NULL; |
| 659 | |
| 660 | if (!_bfd_elf_link_hash_table_init (&ret->root, abfd, |
| 661 | or1k_elf_link_hash_newfunc, |
| 662 | sizeof (struct elf_or1k_link_hash_entry), |
| 663 | OR1K_ELF_DATA)) |
| 664 | { |
| 665 | free (ret); |
| 666 | return NULL; |
| 667 | } |
| 668 | |
| 669 | return &ret->root.root; |
| 670 | } |
| 671 | |
| 672 | static reloc_howto_type * |
| 673 | or1k_reloc_type_lookup (bfd * abfd ATTRIBUTE_UNUSED, |
| 674 | bfd_reloc_code_real_type code) |
| 675 | { |
| 676 | unsigned int i; |
| 677 | |
| 678 | for (i = ARRAY_SIZE (or1k_reloc_map); i--;) |
| 679 | if (or1k_reloc_map[i].bfd_reloc_val == code) |
| 680 | return & or1k_elf_howto_table[or1k_reloc_map[i].or1k_reloc_val]; |
| 681 | |
| 682 | return NULL; |
| 683 | } |
| 684 | |
| 685 | static reloc_howto_type * |
| 686 | or1k_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED, |
| 687 | const char *r_name) |
| 688 | { |
| 689 | unsigned int i; |
| 690 | |
| 691 | for (i = 0; |
| 692 | i < (sizeof (or1k_elf_howto_table) |
| 693 | / sizeof (or1k_elf_howto_table[0])); |
| 694 | i++) |
| 695 | if (or1k_elf_howto_table[i].name != NULL |
| 696 | && strcasecmp (or1k_elf_howto_table[i].name, r_name) == 0) |
| 697 | return &or1k_elf_howto_table[i]; |
| 698 | |
| 699 | return NULL; |
| 700 | } |
| 701 | |
| 702 | /* Set the howto pointer for an Or1k ELF reloc. */ |
| 703 | |
| 704 | static bfd_boolean |
| 705 | or1k_info_to_howto_rela (bfd * abfd, |
| 706 | arelent * cache_ptr, |
| 707 | Elf_Internal_Rela * dst) |
| 708 | { |
| 709 | unsigned int r_type; |
| 710 | |
| 711 | r_type = ELF32_R_TYPE (dst->r_info); |
| 712 | if (r_type >= (unsigned int) R_OR1K_max) |
| 713 | { |
| 714 | /* xgettext:c-format */ |
| 715 | _bfd_error_handler (_("%pB: unsupported relocation type %#x"), |
| 716 | abfd, r_type); |
| 717 | bfd_set_error (bfd_error_bad_value); |
| 718 | return FALSE; |
| 719 | } |
| 720 | cache_ptr->howto = & or1k_elf_howto_table[r_type]; |
| 721 | return TRUE; |
| 722 | } |
| 723 | |
| 724 | |
| 725 | /* Return the relocation value for @tpoff relocations.. */ |
| 726 | static bfd_vma |
| 727 | tpoff (struct bfd_link_info *info, bfd_vma address) |
| 728 | { |
| 729 | /* If tls_sec is NULL, we should have signalled an error already. */ |
| 730 | if (elf_hash_table (info)->tls_sec == NULL) |
| 731 | return 0; |
| 732 | |
| 733 | /* The thread pointer on or1k stores the address after the TCB where |
| 734 | the data is, just compute the difference. No need to compensate |
| 735 | for the size of TCB. */ |
| 736 | return (address - elf_hash_table (info)->tls_sec->vma); |
| 737 | } |
| 738 | |
| 739 | /* Relocate an Or1k ELF section. |
| 740 | |
| 741 | The RELOCATE_SECTION function is called by the new ELF backend linker |
| 742 | to handle the relocations for a section. |
| 743 | |
| 744 | The relocs are always passed as Rela structures; if the section |
| 745 | actually uses Rel structures, the r_addend field will always be |
| 746 | zero. |
| 747 | |
| 748 | This function is responsible for adjusting the section contents as |
| 749 | necessary, and (if using Rela relocs and generating a relocatable |
| 750 | output file) adjusting the reloc addend as necessary. |
| 751 | |
| 752 | This function does not have to worry about setting the reloc |
| 753 | address or the reloc symbol index. |
| 754 | |
| 755 | LOCAL_SYMS is a pointer to the swapped in local symbols. |
| 756 | |
| 757 | LOCAL_SECTIONS is an array giving the section in the input file |
| 758 | corresponding to the st_shndx field of each local symbol. |
| 759 | |
| 760 | The global hash table entry for the global symbols can be found |
| 761 | via elf_sym_hashes (input_bfd). |
| 762 | |
| 763 | When generating relocatable output, this function must handle |
| 764 | STB_LOCAL/STT_SECTION symbols specially. The output symbol is |
| 765 | going to be the section symbol corresponding to the output |
| 766 | section, which means that the addend must be adjusted |
| 767 | accordingly. */ |
| 768 | |
| 769 | static bfd_boolean |
| 770 | or1k_elf_relocate_section (bfd *output_bfd, |
| 771 | struct bfd_link_info *info, |
| 772 | bfd *input_bfd, |
| 773 | asection *input_section, |
| 774 | bfd_byte *contents, |
| 775 | Elf_Internal_Rela *relocs, |
| 776 | Elf_Internal_Sym *local_syms, |
| 777 | asection **local_sections) |
| 778 | { |
| 779 | Elf_Internal_Shdr *symtab_hdr; |
| 780 | struct elf_link_hash_entry **sym_hashes; |
| 781 | Elf_Internal_Rela *rel; |
| 782 | Elf_Internal_Rela *relend; |
| 783 | struct elf_or1k_link_hash_table *htab = or1k_elf_hash_table (info); |
| 784 | bfd *dynobj; |
| 785 | asection *sreloc; |
| 786 | bfd_vma *local_got_offsets; |
| 787 | asection *sgot; |
| 788 | |
| 789 | if (htab == NULL) |
| 790 | return FALSE; |
| 791 | |
| 792 | dynobj = htab->root.dynobj; |
| 793 | local_got_offsets = elf_local_got_offsets (input_bfd); |
| 794 | |
| 795 | sreloc = elf_section_data (input_section)->sreloc; |
| 796 | |
| 797 | sgot = htab->root.sgot; |
| 798 | |
| 799 | symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; |
| 800 | sym_hashes = elf_sym_hashes (input_bfd); |
| 801 | relend = relocs + input_section->reloc_count; |
| 802 | |
| 803 | for (rel = relocs; rel < relend; rel++) |
| 804 | { |
| 805 | reloc_howto_type *howto; |
| 806 | unsigned long r_symndx; |
| 807 | Elf_Internal_Sym *sym; |
| 808 | asection *sec; |
| 809 | struct elf_link_hash_entry *h; |
| 810 | bfd_vma relocation; |
| 811 | bfd_reloc_status_type r; |
| 812 | const char *name = NULL; |
| 813 | int r_type; |
| 814 | |
| 815 | r_type = ELF32_R_TYPE (rel->r_info); |
| 816 | r_symndx = ELF32_R_SYM (rel->r_info); |
| 817 | |
| 818 | if (r_type == R_OR1K_GNU_VTINHERIT |
| 819 | || r_type == R_OR1K_GNU_VTENTRY) |
| 820 | continue; |
| 821 | |
| 822 | if (r_type < 0 || r_type >= (int) R_OR1K_max) |
| 823 | { |
| 824 | bfd_set_error (bfd_error_bad_value); |
| 825 | return FALSE; |
| 826 | } |
| 827 | |
| 828 | howto = or1k_elf_howto_table + ELF32_R_TYPE (rel->r_info); |
| 829 | h = NULL; |
| 830 | sym = NULL; |
| 831 | sec = NULL; |
| 832 | |
| 833 | if (r_symndx < symtab_hdr->sh_info) |
| 834 | { |
| 835 | sym = local_syms + r_symndx; |
| 836 | sec = local_sections[r_symndx]; |
| 837 | relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel); |
| 838 | |
| 839 | name = bfd_elf_string_from_elf_section |
| 840 | (input_bfd, symtab_hdr->sh_link, sym->st_name); |
| 841 | name = (name == NULL) ? bfd_section_name (input_bfd, sec) : name; |
| 842 | } |
| 843 | else |
| 844 | { |
| 845 | bfd_boolean unresolved_reloc, warned, ignored; |
| 846 | |
| 847 | RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel, |
| 848 | r_symndx, symtab_hdr, sym_hashes, |
| 849 | h, sec, relocation, |
| 850 | unresolved_reloc, warned, ignored); |
| 851 | } |
| 852 | |
| 853 | if (sec != NULL && discarded_section (sec)) |
| 854 | RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section, |
| 855 | rel, 1, relend, howto, 0, contents); |
| 856 | |
| 857 | if (bfd_link_relocatable (info)) |
| 858 | continue; |
| 859 | |
| 860 | switch (howto->type) |
| 861 | { |
| 862 | case R_OR1K_PLT26: |
| 863 | { |
| 864 | if (htab->root.splt != NULL && h != NULL |
| 865 | && h->plt.offset != (bfd_vma) -1) |
| 866 | { |
| 867 | relocation = (htab->root.splt->output_section->vma |
| 868 | + htab->root.splt->output_offset |
| 869 | + h->plt.offset); |
| 870 | } |
| 871 | break; |
| 872 | } |
| 873 | |
| 874 | case R_OR1K_GOT16: |
| 875 | /* Relocation is to the entry for this symbol in the global |
| 876 | offset table. */ |
| 877 | BFD_ASSERT (sgot != NULL); |
| 878 | if (h != NULL) |
| 879 | { |
| 880 | bfd_boolean dyn; |
| 881 | bfd_vma off; |
| 882 | |
| 883 | off = h->got.offset; |
| 884 | BFD_ASSERT (off != (bfd_vma) -1); |
| 885 | |
| 886 | dyn = htab->root.dynamic_sections_created; |
| 887 | if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, |
| 888 | bfd_link_pic (info), |
| 889 | h) |
| 890 | || (bfd_link_pic (info) |
| 891 | && SYMBOL_REFERENCES_LOCAL (info, h))) |
| 892 | { |
| 893 | /* This is actually a static link, or it is a |
| 894 | -Bsymbolic link and the symbol is defined |
| 895 | locally, or the symbol was forced to be local |
| 896 | because of a version file. We must initialize |
| 897 | this entry in the global offset table. Since the |
| 898 | offset must always be a multiple of 4, we use the |
| 899 | least significant bit to record whether we have |
| 900 | initialized it already. |
| 901 | |
| 902 | When doing a dynamic link, we create a .rela.got |
| 903 | relocation entry to initialize the value. This |
| 904 | is done in the finish_dynamic_symbol routine. */ |
| 905 | if ((off & 1) != 0) |
| 906 | off &= ~1; |
| 907 | else |
| 908 | { |
| 909 | /* Write entry in GOT. */ |
| 910 | bfd_put_32 (output_bfd, relocation, |
| 911 | sgot->contents + off); |
| 912 | /* Mark GOT entry as having been written. */ |
| 913 | h->got.offset |= 1; |
| 914 | } |
| 915 | } |
| 916 | |
| 917 | relocation = sgot->output_offset + off; |
| 918 | } |
| 919 | else |
| 920 | { |
| 921 | bfd_vma off; |
| 922 | bfd_byte *loc; |
| 923 | |
| 924 | BFD_ASSERT (local_got_offsets != NULL |
| 925 | && local_got_offsets[r_symndx] != (bfd_vma) -1); |
| 926 | |
| 927 | /* Get offset into GOT table. */ |
| 928 | off = local_got_offsets[r_symndx]; |
| 929 | |
| 930 | /* The offset must always be a multiple of 4. We use |
| 931 | the least significant bit to record whether we have |
| 932 | already processed this entry. */ |
| 933 | if ((off & 1) != 0) |
| 934 | off &= ~1; |
| 935 | else |
| 936 | { |
| 937 | /* Write entry in GOT. */ |
| 938 | bfd_put_32 (output_bfd, relocation, sgot->contents + off); |
| 939 | if (bfd_link_pic (info)) |
| 940 | { |
| 941 | asection *srelgot; |
| 942 | Elf_Internal_Rela outrel; |
| 943 | |
| 944 | /* We need to generate a R_OR1K_RELATIVE reloc |
| 945 | for the dynamic linker. */ |
| 946 | srelgot = htab->root.srelgot; |
| 947 | BFD_ASSERT (srelgot != NULL); |
| 948 | |
| 949 | outrel.r_offset = (sgot->output_section->vma |
| 950 | + sgot->output_offset |
| 951 | + off); |
| 952 | outrel.r_info = ELF32_R_INFO (0, R_OR1K_RELATIVE); |
| 953 | outrel.r_addend = relocation; |
| 954 | loc = srelgot->contents; |
| 955 | loc += srelgot->reloc_count * sizeof (Elf32_External_Rela); |
| 956 | bfd_elf32_swap_reloca_out (output_bfd, &outrel,loc); |
| 957 | ++srelgot->reloc_count; |
| 958 | } |
| 959 | |
| 960 | local_got_offsets[r_symndx] |= 1; |
| 961 | } |
| 962 | relocation = sgot->output_offset + off; |
| 963 | } |
| 964 | |
| 965 | /* Addend should be zero. */ |
| 966 | if (rel->r_addend != 0) |
| 967 | _bfd_error_handler |
| 968 | (_("internal error: addend should be zero for %s"), |
| 969 | "R_OR1K_GOT16"); |
| 970 | |
| 971 | break; |
| 972 | |
| 973 | case R_OR1K_GOTOFF_LO16: |
| 974 | case R_OR1K_GOTOFF_HI16: |
| 975 | /* Relocation is offset from GOT. */ |
| 976 | BFD_ASSERT (sgot != NULL); |
| 977 | relocation |
| 978 | -= (htab->root.hgot->root.u.def.value |
| 979 | + htab->root.hgot->root.u.def.section->output_offset |
| 980 | + htab->root.hgot->root.u.def.section->output_section->vma); |
| 981 | break; |
| 982 | |
| 983 | case R_OR1K_INSN_REL_26: |
| 984 | case R_OR1K_HI_16_IN_INSN: |
| 985 | case R_OR1K_LO_16_IN_INSN: |
| 986 | case R_OR1K_32: |
| 987 | /* R_OR1K_16? */ |
| 988 | { |
| 989 | /* r_symndx will be STN_UNDEF (zero) only for relocs against symbols |
| 990 | from removed linkonce sections, or sections discarded by |
| 991 | a linker script. */ |
| 992 | if (r_symndx == STN_UNDEF |
| 993 | || (input_section->flags & SEC_ALLOC) == 0) |
| 994 | break; |
| 995 | |
| 996 | if ((bfd_link_pic (info) |
| 997 | && (h == NULL |
| 998 | || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT |
| 999 | || h->root.type != bfd_link_hash_undefweak) |
| 1000 | && (howto->type != R_OR1K_INSN_REL_26 |
| 1001 | || !SYMBOL_CALLS_LOCAL (info, h))) |
| 1002 | || (!bfd_link_pic (info) |
| 1003 | && h != NULL |
| 1004 | && h->dynindx != -1 |
| 1005 | && !h->non_got_ref |
| 1006 | && ((h->def_dynamic |
| 1007 | && !h->def_regular) |
| 1008 | || h->root.type == bfd_link_hash_undefweak |
| 1009 | || h->root.type == bfd_link_hash_undefined))) |
| 1010 | { |
| 1011 | Elf_Internal_Rela outrel; |
| 1012 | bfd_byte *loc; |
| 1013 | bfd_boolean skip; |
| 1014 | |
| 1015 | /* When generating a shared object, these relocations |
| 1016 | are copied into the output file to be resolved at run |
| 1017 | time. */ |
| 1018 | |
| 1019 | BFD_ASSERT (sreloc != NULL); |
| 1020 | |
| 1021 | skip = FALSE; |
| 1022 | |
| 1023 | outrel.r_offset = |
| 1024 | _bfd_elf_section_offset (output_bfd, info, input_section, |
| 1025 | rel->r_offset); |
| 1026 | if (outrel.r_offset == (bfd_vma) -1) |
| 1027 | skip = TRUE; |
| 1028 | else if (outrel.r_offset == (bfd_vma) -2) |
| 1029 | skip = TRUE; |
| 1030 | outrel.r_offset += (input_section->output_section->vma |
| 1031 | + input_section->output_offset); |
| 1032 | |
| 1033 | if (skip) |
| 1034 | memset (&outrel, 0, sizeof outrel); |
| 1035 | /* h->dynindx may be -1 if the symbol was marked to |
| 1036 | become local. */ |
| 1037 | else if (h != NULL |
| 1038 | && ((! info->symbolic && h->dynindx != -1) |
| 1039 | || !h->def_regular)) |
| 1040 | { |
| 1041 | BFD_ASSERT (h->dynindx != -1); |
| 1042 | outrel.r_info = ELF32_R_INFO (h->dynindx, r_type); |
| 1043 | outrel.r_addend = rel->r_addend; |
| 1044 | } |
| 1045 | else |
| 1046 | { |
| 1047 | if (r_type == R_OR1K_32) |
| 1048 | { |
| 1049 | outrel.r_info = ELF32_R_INFO (0, R_OR1K_RELATIVE); |
| 1050 | outrel.r_addend = relocation + rel->r_addend; |
| 1051 | } |
| 1052 | else |
| 1053 | { |
| 1054 | BFD_FAIL (); |
| 1055 | _bfd_error_handler |
| 1056 | (_("%pB: probably compiled without -fPIC?"), |
| 1057 | input_bfd); |
| 1058 | bfd_set_error (bfd_error_bad_value); |
| 1059 | return FALSE; |
| 1060 | } |
| 1061 | } |
| 1062 | |
| 1063 | loc = sreloc->contents; |
| 1064 | loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela); |
| 1065 | bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc); |
| 1066 | break; |
| 1067 | } |
| 1068 | break; |
| 1069 | } |
| 1070 | |
| 1071 | case R_OR1K_TLS_LDM_HI16: |
| 1072 | case R_OR1K_TLS_LDM_LO16: |
| 1073 | case R_OR1K_TLS_LDO_HI16: |
| 1074 | case R_OR1K_TLS_LDO_LO16: |
| 1075 | /* TODO: implement support for local dynamic. */ |
| 1076 | BFD_FAIL (); |
| 1077 | _bfd_error_handler |
| 1078 | (_("%pB: support for local dynamic not implemented"), |
| 1079 | input_bfd); |
| 1080 | bfd_set_error (bfd_error_bad_value); |
| 1081 | return FALSE; |
| 1082 | |
| 1083 | |
| 1084 | case R_OR1K_TLS_GD_HI16: |
| 1085 | case R_OR1K_TLS_GD_LO16: |
| 1086 | case R_OR1K_TLS_IE_HI16: |
| 1087 | case R_OR1K_TLS_IE_LO16: |
| 1088 | { |
| 1089 | bfd_vma gotoff; |
| 1090 | Elf_Internal_Rela rela; |
| 1091 | bfd_byte *loc; |
| 1092 | int dynamic; |
| 1093 | |
| 1094 | sreloc = bfd_get_section_by_name (dynobj, ".rela.got"); |
| 1095 | |
| 1096 | /* Mark as TLS related GOT entry by setting |
| 1097 | bit 2 as well as bit 1. */ |
| 1098 | if (h != NULL) |
| 1099 | { |
| 1100 | gotoff = h->got.offset; |
| 1101 | h->got.offset |= 3; |
| 1102 | } |
| 1103 | else |
| 1104 | { |
| 1105 | gotoff = local_got_offsets[r_symndx]; |
| 1106 | local_got_offsets[r_symndx] |= 3; |
| 1107 | } |
| 1108 | |
| 1109 | /* Only process the relocation once. */ |
| 1110 | if (gotoff & 1) |
| 1111 | { |
| 1112 | relocation = sgot->output_offset + (gotoff & ~3); |
| 1113 | break; |
| 1114 | } |
| 1115 | |
| 1116 | BFD_ASSERT (elf_hash_table (info)->hgot == NULL |
| 1117 | || elf_hash_table (info)->hgot->root.u.def.value == 0); |
| 1118 | |
| 1119 | /* Dynamic entries will require relocations. if we do not need |
| 1120 | them we will just use the default R_OR1K_NONE and |
| 1121 | not set anything. */ |
| 1122 | dynamic = bfd_link_pic (info) |
| 1123 | || (sec && (sec->flags & SEC_ALLOC) != 0 |
| 1124 | && h != NULL |
| 1125 | && (h->root.type == bfd_link_hash_defweak || !h->def_regular)); |
| 1126 | |
| 1127 | /* Shared GD. */ |
| 1128 | if (dynamic && (howto->type == R_OR1K_TLS_GD_HI16 |
| 1129 | || howto->type == R_OR1K_TLS_GD_LO16)) |
| 1130 | { |
| 1131 | int i; |
| 1132 | |
| 1133 | /* Add DTPMOD and DTPOFF GOT and rela entries. */ |
| 1134 | for (i = 0; i < 2; ++i) |
| 1135 | { |
| 1136 | rela.r_offset = sgot->output_section->vma + |
| 1137 | sgot->output_offset + gotoff + i*4; |
| 1138 | if (h != NULL && h->dynindx != -1) |
| 1139 | { |
| 1140 | rela.r_info = ELF32_R_INFO (h->dynindx, |
| 1141 | (i == 0 ? R_OR1K_TLS_DTPMOD : R_OR1K_TLS_DTPOFF)); |
| 1142 | rela.r_addend = 0; |
| 1143 | } |
| 1144 | else |
| 1145 | { |
| 1146 | rela.r_info = ELF32_R_INFO (0, |
| 1147 | (i == 0 ? R_OR1K_TLS_DTPMOD : R_OR1K_TLS_DTPOFF)); |
| 1148 | rela.r_addend = tpoff (info, relocation); |
| 1149 | } |
| 1150 | |
| 1151 | loc = sreloc->contents; |
| 1152 | loc += sreloc->reloc_count++ * |
| 1153 | sizeof (Elf32_External_Rela); |
| 1154 | |
| 1155 | bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); |
| 1156 | bfd_put_32 (output_bfd, 0, sgot->contents + gotoff + i*4); |
| 1157 | } |
| 1158 | } |
| 1159 | /* Static GD. */ |
| 1160 | else if (howto->type == R_OR1K_TLS_GD_HI16 |
| 1161 | || howto->type == R_OR1K_TLS_GD_LO16) |
| 1162 | { |
| 1163 | bfd_put_32 (output_bfd, 1, sgot->contents + gotoff); |
| 1164 | bfd_put_32 (output_bfd, tpoff (info, relocation), |
| 1165 | sgot->contents + gotoff + 4); |
| 1166 | } |
| 1167 | /* Shared IE. */ |
| 1168 | else if (dynamic) |
| 1169 | { |
| 1170 | /* Add TPOFF GOT and rela entries. */ |
| 1171 | rela.r_offset = sgot->output_section->vma + |
| 1172 | sgot->output_offset + gotoff; |
| 1173 | if (h != NULL && h->dynindx != -1) |
| 1174 | { |
| 1175 | rela.r_info = ELF32_R_INFO (h->dynindx, R_OR1K_TLS_TPOFF); |
| 1176 | rela.r_addend = 0; |
| 1177 | } |
| 1178 | else |
| 1179 | { |
| 1180 | rela.r_info = ELF32_R_INFO (0, R_OR1K_TLS_TPOFF); |
| 1181 | rela.r_addend = tpoff (info, relocation); |
| 1182 | } |
| 1183 | |
| 1184 | loc = sreloc->contents; |
| 1185 | loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela); |
| 1186 | |
| 1187 | bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); |
| 1188 | bfd_put_32 (output_bfd, 0, sgot->contents + gotoff); |
| 1189 | } |
| 1190 | /* Static IE. */ |
| 1191 | else |
| 1192 | { |
| 1193 | bfd_put_32 (output_bfd, tpoff (info, relocation), |
| 1194 | sgot->contents + gotoff); |
| 1195 | } |
| 1196 | relocation = sgot->output_offset + gotoff; |
| 1197 | break; |
| 1198 | } |
| 1199 | case R_OR1K_TLS_LE_HI16: |
| 1200 | case R_OR1K_TLS_LE_LO16: |
| 1201 | |
| 1202 | /* Relocation is offset from TP. */ |
| 1203 | relocation = tpoff (info, relocation); |
| 1204 | break; |
| 1205 | |
| 1206 | case R_OR1K_TLS_DTPMOD: |
| 1207 | case R_OR1K_TLS_DTPOFF: |
| 1208 | case R_OR1K_TLS_TPOFF: |
| 1209 | /* These are resolved dynamically on load and shouldn't |
| 1210 | be used as linker input. */ |
| 1211 | BFD_FAIL (); |
| 1212 | _bfd_error_handler |
| 1213 | (_("%pB: will not resolve runtime TLS relocation"), |
| 1214 | input_bfd); |
| 1215 | bfd_set_error (bfd_error_bad_value); |
| 1216 | return FALSE; |
| 1217 | |
| 1218 | default: |
| 1219 | break; |
| 1220 | } |
| 1221 | r = _bfd_final_link_relocate (howto, input_bfd, input_section, contents, |
| 1222 | rel->r_offset, relocation, rel->r_addend); |
| 1223 | |
| 1224 | if (r != bfd_reloc_ok) |
| 1225 | { |
| 1226 | const char *msg = NULL; |
| 1227 | |
| 1228 | switch (r) |
| 1229 | { |
| 1230 | case bfd_reloc_overflow: |
| 1231 | (*info->callbacks->reloc_overflow) |
| 1232 | (info, (h ? &h->root : NULL), name, howto->name, |
| 1233 | (bfd_vma) 0, input_bfd, input_section, rel->r_offset); |
| 1234 | break; |
| 1235 | |
| 1236 | case bfd_reloc_undefined: |
| 1237 | (*info->callbacks->undefined_symbol) |
| 1238 | (info, name, input_bfd, input_section, rel->r_offset, TRUE); |
| 1239 | break; |
| 1240 | |
| 1241 | case bfd_reloc_outofrange: |
| 1242 | msg = _("internal error: out of range error"); |
| 1243 | break; |
| 1244 | |
| 1245 | case bfd_reloc_notsupported: |
| 1246 | msg = _("internal error: unsupported relocation error"); |
| 1247 | break; |
| 1248 | |
| 1249 | case bfd_reloc_dangerous: |
| 1250 | msg = _("internal error: dangerous relocation"); |
| 1251 | break; |
| 1252 | |
| 1253 | default: |
| 1254 | msg = _("internal error: unknown error"); |
| 1255 | break; |
| 1256 | } |
| 1257 | |
| 1258 | if (msg) |
| 1259 | (*info->callbacks->warning) (info, msg, name, input_bfd, |
| 1260 | input_section, rel->r_offset); |
| 1261 | } |
| 1262 | } |
| 1263 | |
| 1264 | return TRUE; |
| 1265 | } |
| 1266 | |
| 1267 | /* Return the section that should be marked against GC for a given |
| 1268 | relocation. */ |
| 1269 | |
| 1270 | static asection * |
| 1271 | or1k_elf_gc_mark_hook (asection *sec, |
| 1272 | struct bfd_link_info *info, |
| 1273 | Elf_Internal_Rela *rel, |
| 1274 | struct elf_link_hash_entry *h, |
| 1275 | Elf_Internal_Sym *sym) |
| 1276 | { |
| 1277 | if (h != NULL) |
| 1278 | switch (ELF32_R_TYPE (rel->r_info)) |
| 1279 | { |
| 1280 | case R_OR1K_GNU_VTINHERIT: |
| 1281 | case R_OR1K_GNU_VTENTRY: |
| 1282 | return NULL; |
| 1283 | } |
| 1284 | |
| 1285 | return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym); |
| 1286 | } |
| 1287 | |
| 1288 | /* Look through the relocs for a section during the first phase. */ |
| 1289 | |
| 1290 | static bfd_boolean |
| 1291 | or1k_elf_check_relocs (bfd *abfd, |
| 1292 | struct bfd_link_info *info, |
| 1293 | asection *sec, |
| 1294 | const Elf_Internal_Rela *relocs) |
| 1295 | { |
| 1296 | Elf_Internal_Shdr *symtab_hdr; |
| 1297 | struct elf_link_hash_entry **sym_hashes; |
| 1298 | const Elf_Internal_Rela *rel; |
| 1299 | |
| 1300 | const Elf_Internal_Rela *rel_end; |
| 1301 | struct elf_or1k_link_hash_table *htab; |
| 1302 | bfd *dynobj; |
| 1303 | asection *sreloc = NULL; |
| 1304 | |
| 1305 | if (bfd_link_relocatable (info)) |
| 1306 | return TRUE; |
| 1307 | |
| 1308 | /* Don't do anything special with non-loaded, non-alloced sections. |
| 1309 | In particular, any relocs in such sections should not affect GOT |
| 1310 | and PLT reference counting (ie. we don't allow them to create GOT |
| 1311 | or PLT entries), there's no possibility or desire to optimize TLS |
| 1312 | relocs, and there's not much point in propagating relocs to shared |
| 1313 | libs that the dynamic linker won't relocate. */ |
| 1314 | if ((sec->flags & SEC_ALLOC) == 0) |
| 1315 | return TRUE; |
| 1316 | |
| 1317 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; |
| 1318 | sym_hashes = elf_sym_hashes (abfd); |
| 1319 | |
| 1320 | htab = or1k_elf_hash_table (info); |
| 1321 | if (htab == NULL) |
| 1322 | return FALSE; |
| 1323 | |
| 1324 | dynobj = htab->root.dynobj; |
| 1325 | |
| 1326 | rel_end = relocs + sec->reloc_count; |
| 1327 | for (rel = relocs; rel < rel_end; rel++) |
| 1328 | { |
| 1329 | struct elf_link_hash_entry *h; |
| 1330 | unsigned long r_symndx; |
| 1331 | unsigned char tls_type; |
| 1332 | |
| 1333 | r_symndx = ELF32_R_SYM (rel->r_info); |
| 1334 | if (r_symndx < symtab_hdr->sh_info) |
| 1335 | h = NULL; |
| 1336 | else |
| 1337 | { |
| 1338 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; |
| 1339 | while (h->root.type == bfd_link_hash_indirect |
| 1340 | || h->root.type == bfd_link_hash_warning) |
| 1341 | h = (struct elf_link_hash_entry *) h->root.u.i.link; |
| 1342 | } |
| 1343 | |
| 1344 | switch (ELF32_R_TYPE (rel->r_info)) |
| 1345 | { |
| 1346 | case R_OR1K_TLS_GD_HI16: |
| 1347 | case R_OR1K_TLS_GD_LO16: |
| 1348 | tls_type = TLS_GD; |
| 1349 | break; |
| 1350 | case R_OR1K_TLS_LDM_HI16: |
| 1351 | case R_OR1K_TLS_LDM_LO16: |
| 1352 | case R_OR1K_TLS_LDO_HI16: |
| 1353 | case R_OR1K_TLS_LDO_LO16: |
| 1354 | tls_type = TLS_LD; |
| 1355 | break; |
| 1356 | case R_OR1K_TLS_IE_HI16: |
| 1357 | case R_OR1K_TLS_IE_LO16: |
| 1358 | tls_type = TLS_IE; |
| 1359 | break; |
| 1360 | case R_OR1K_TLS_LE_HI16: |
| 1361 | case R_OR1K_TLS_LE_LO16: |
| 1362 | tls_type = TLS_LE; |
| 1363 | break; |
| 1364 | default: |
| 1365 | tls_type = TLS_NONE; |
| 1366 | } |
| 1367 | |
| 1368 | /* Record TLS type. */ |
| 1369 | if (h != NULL) |
| 1370 | ((struct elf_or1k_link_hash_entry *) h)->tls_type = tls_type; |
| 1371 | else |
| 1372 | { |
| 1373 | unsigned char *local_tls_type; |
| 1374 | |
| 1375 | /* This is a TLS type record for a local symbol. */ |
| 1376 | local_tls_type = (unsigned char *) elf_or1k_local_tls_type (abfd); |
| 1377 | if (local_tls_type == NULL) |
| 1378 | { |
| 1379 | bfd_size_type size; |
| 1380 | |
| 1381 | size = symtab_hdr->sh_info; |
| 1382 | local_tls_type = bfd_zalloc (abfd, size); |
| 1383 | if (local_tls_type == NULL) |
| 1384 | return FALSE; |
| 1385 | elf_or1k_local_tls_type (abfd) = local_tls_type; |
| 1386 | } |
| 1387 | local_tls_type[r_symndx] = tls_type; |
| 1388 | } |
| 1389 | |
| 1390 | switch (ELF32_R_TYPE (rel->r_info)) |
| 1391 | { |
| 1392 | /* This relocation describes the C++ object vtable hierarchy. |
| 1393 | Reconstruct it for later use during GC. */ |
| 1394 | case R_OR1K_GNU_VTINHERIT: |
| 1395 | if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset)) |
| 1396 | return FALSE; |
| 1397 | break; |
| 1398 | |
| 1399 | /* This relocation describes which C++ vtable entries are actually |
| 1400 | used. Record for later use during GC. */ |
| 1401 | case R_OR1K_GNU_VTENTRY: |
| 1402 | BFD_ASSERT (h != NULL); |
| 1403 | if (h != NULL |
| 1404 | && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend)) |
| 1405 | return FALSE; |
| 1406 | break; |
| 1407 | |
| 1408 | /* This relocation requires .plt entry. */ |
| 1409 | case R_OR1K_PLT26: |
| 1410 | if (h != NULL) |
| 1411 | { |
| 1412 | h->needs_plt = 1; |
| 1413 | h->plt.refcount += 1; |
| 1414 | } |
| 1415 | break; |
| 1416 | |
| 1417 | case R_OR1K_GOT16: |
| 1418 | case R_OR1K_GOTOFF_HI16: |
| 1419 | case R_OR1K_GOTOFF_LO16: |
| 1420 | case R_OR1K_TLS_GD_HI16: |
| 1421 | case R_OR1K_TLS_GD_LO16: |
| 1422 | case R_OR1K_TLS_IE_HI16: |
| 1423 | case R_OR1K_TLS_IE_LO16: |
| 1424 | if (htab->root.sgot == NULL) |
| 1425 | { |
| 1426 | if (dynobj == NULL) |
| 1427 | htab->root.dynobj = dynobj = abfd; |
| 1428 | if (!_bfd_elf_create_got_section (dynobj, info)) |
| 1429 | return FALSE; |
| 1430 | } |
| 1431 | |
| 1432 | if (ELF32_R_TYPE (rel->r_info) != R_OR1K_GOTOFF_HI16 && |
| 1433 | ELF32_R_TYPE (rel->r_info) != R_OR1K_GOTOFF_LO16) |
| 1434 | { |
| 1435 | if (h != NULL) |
| 1436 | h->got.refcount += 1; |
| 1437 | else |
| 1438 | { |
| 1439 | bfd_signed_vma *local_got_refcounts; |
| 1440 | |
| 1441 | /* This is a global offset table entry for a local symbol. */ |
| 1442 | local_got_refcounts = elf_local_got_refcounts (abfd); |
| 1443 | if (local_got_refcounts == NULL) |
| 1444 | { |
| 1445 | bfd_size_type size; |
| 1446 | |
| 1447 | size = symtab_hdr->sh_info; |
| 1448 | size *= sizeof (bfd_signed_vma); |
| 1449 | local_got_refcounts = bfd_zalloc (abfd, size); |
| 1450 | if (local_got_refcounts == NULL) |
| 1451 | return FALSE; |
| 1452 | elf_local_got_refcounts (abfd) = local_got_refcounts; |
| 1453 | } |
| 1454 | local_got_refcounts[r_symndx] += 1; |
| 1455 | } |
| 1456 | } |
| 1457 | break; |
| 1458 | |
| 1459 | case R_OR1K_INSN_REL_26: |
| 1460 | case R_OR1K_HI_16_IN_INSN: |
| 1461 | case R_OR1K_LO_16_IN_INSN: |
| 1462 | case R_OR1K_32: |
| 1463 | /* R_OR1K_16? */ |
| 1464 | { |
| 1465 | if (h != NULL && !bfd_link_pic (info)) |
| 1466 | { |
| 1467 | /* We may need a copy reloc. */ |
| 1468 | h->non_got_ref = 1; |
| 1469 | |
| 1470 | /* We may also need a .plt entry. */ |
| 1471 | h->plt.refcount += 1; |
| 1472 | if (ELF32_R_TYPE (rel->r_info) != R_OR1K_INSN_REL_26) |
| 1473 | h->pointer_equality_needed = 1; |
| 1474 | } |
| 1475 | |
| 1476 | /* If we are creating a shared library, and this is a reloc |
| 1477 | against a global symbol, or a non PC relative reloc |
| 1478 | against a local symbol, then we need to copy the reloc |
| 1479 | into the shared library. However, if we are linking with |
| 1480 | -Bsymbolic, we do not need to copy a reloc against a |
| 1481 | global symbol which is defined in an object we are |
| 1482 | including in the link (i.e., DEF_REGULAR is set). At |
| 1483 | this point we have not seen all the input files, so it is |
| 1484 | possible that DEF_REGULAR is not set now but will be set |
| 1485 | later (it is never cleared). In case of a weak definition, |
| 1486 | DEF_REGULAR may be cleared later by a strong definition in |
| 1487 | a shared library. We account for that possibility below by |
| 1488 | storing information in the relocs_copied field of the hash |
| 1489 | table entry. A similar situation occurs when creating |
| 1490 | shared libraries and symbol visibility changes render the |
| 1491 | symbol local. |
| 1492 | |
| 1493 | If on the other hand, we are creating an executable, we |
| 1494 | may need to keep relocations for symbols satisfied by a |
| 1495 | dynamic library if we manage to avoid copy relocs for the |
| 1496 | symbol. */ |
| 1497 | |
| 1498 | if ((bfd_link_pic (info) |
| 1499 | && (sec->flags & SEC_ALLOC) != 0 |
| 1500 | && (ELF32_R_TYPE (rel->r_info) != R_OR1K_INSN_REL_26 |
| 1501 | || (h != NULL |
| 1502 | && (!SYMBOLIC_BIND (info, h) |
| 1503 | || h->root.type == bfd_link_hash_defweak |
| 1504 | || !h->def_regular)))) |
| 1505 | || (!bfd_link_pic (info) |
| 1506 | && (sec->flags & SEC_ALLOC) != 0 |
| 1507 | && h != NULL |
| 1508 | && (h->root.type == bfd_link_hash_defweak |
| 1509 | || !h->def_regular))) |
| 1510 | { |
| 1511 | struct elf_dyn_relocs *p; |
| 1512 | struct elf_dyn_relocs **head; |
| 1513 | |
| 1514 | /* When creating a shared object, we must copy these |
| 1515 | relocs into the output file. We create a reloc |
| 1516 | section in dynobj and make room for the reloc. */ |
| 1517 | if (sreloc == NULL) |
| 1518 | { |
| 1519 | const char *name; |
| 1520 | unsigned int strndx = elf_elfheader (abfd)->e_shstrndx; |
| 1521 | unsigned int shnam = _bfd_elf_single_rel_hdr (sec)->sh_name; |
| 1522 | |
| 1523 | name = bfd_elf_string_from_elf_section (abfd, strndx, shnam); |
| 1524 | if (name == NULL) |
| 1525 | return FALSE; |
| 1526 | |
| 1527 | if (strncmp (name, ".rela", 5) != 0 |
| 1528 | || strcmp (bfd_get_section_name (abfd, sec), |
| 1529 | name + 5) != 0) |
| 1530 | { |
| 1531 | _bfd_error_handler |
| 1532 | /* xgettext:c-format */ |
| 1533 | (_("%pB: bad relocation section name `%s\'"), |
| 1534 | abfd, name); |
| 1535 | } |
| 1536 | |
| 1537 | if (htab->root.dynobj == NULL) |
| 1538 | htab->root.dynobj = abfd; |
| 1539 | dynobj = htab->root.dynobj; |
| 1540 | |
| 1541 | sreloc = bfd_get_section_by_name (dynobj, name); |
| 1542 | if (sreloc == NULL) |
| 1543 | { |
| 1544 | sreloc = _bfd_elf_make_dynamic_reloc_section |
| 1545 | (sec, dynobj, 2, abfd, /*rela?*/ TRUE); |
| 1546 | |
| 1547 | if (sreloc == NULL) |
| 1548 | return FALSE; |
| 1549 | } |
| 1550 | elf_section_data (sec)->sreloc = sreloc; |
| 1551 | } |
| 1552 | |
| 1553 | /* If this is a global symbol, we count the number of |
| 1554 | relocations we need for this symbol. */ |
| 1555 | if (h != NULL) |
| 1556 | head = &((struct elf_or1k_link_hash_entry *) h)->dyn_relocs; |
| 1557 | else |
| 1558 | { |
| 1559 | /* Track dynamic relocs needed for local syms too. |
| 1560 | We really need local syms available to do this |
| 1561 | easily. Oh well. */ |
| 1562 | |
| 1563 | asection *s; |
| 1564 | Elf_Internal_Sym *isym; |
| 1565 | void *vpp; |
| 1566 | |
| 1567 | isym = bfd_sym_from_r_symndx (&htab->sym_sec, |
| 1568 | abfd, r_symndx); |
| 1569 | if (isym == NULL) |
| 1570 | return FALSE; |
| 1571 | |
| 1572 | s = bfd_section_from_elf_index (abfd, isym->st_shndx); |
| 1573 | if (s == NULL) |
| 1574 | return FALSE; |
| 1575 | |
| 1576 | vpp = &elf_section_data (s)->local_dynrel; |
| 1577 | head = (struct elf_dyn_relocs **) vpp; |
| 1578 | } |
| 1579 | |
| 1580 | p = *head; |
| 1581 | if (p == NULL || p->sec != sec) |
| 1582 | { |
| 1583 | bfd_size_type amt = sizeof *p; |
| 1584 | p = ((struct elf_dyn_relocs *) |
| 1585 | bfd_alloc (htab->root.dynobj, amt)); |
| 1586 | if (p == NULL) |
| 1587 | return FALSE; |
| 1588 | p->next = *head; |
| 1589 | *head = p; |
| 1590 | p->sec = sec; |
| 1591 | p->count = 0; |
| 1592 | p->pc_count = 0; |
| 1593 | } |
| 1594 | |
| 1595 | p->count += 1; |
| 1596 | if (ELF32_R_TYPE (rel->r_info) == R_OR1K_INSN_REL_26) |
| 1597 | p->pc_count += 1; |
| 1598 | } |
| 1599 | } |
| 1600 | break; |
| 1601 | } |
| 1602 | } |
| 1603 | |
| 1604 | return TRUE; |
| 1605 | } |
| 1606 | |
| 1607 | /* Finish up the dynamic sections. */ |
| 1608 | |
| 1609 | static bfd_boolean |
| 1610 | or1k_elf_finish_dynamic_sections (bfd *output_bfd, |
| 1611 | struct bfd_link_info *info) |
| 1612 | { |
| 1613 | bfd *dynobj; |
| 1614 | asection *sdyn, *sgot; |
| 1615 | struct elf_or1k_link_hash_table *htab; |
| 1616 | |
| 1617 | htab = or1k_elf_hash_table (info); |
| 1618 | if (htab == NULL) |
| 1619 | return FALSE; |
| 1620 | |
| 1621 | dynobj = htab->root.dynobj; |
| 1622 | |
| 1623 | sgot = htab->root.sgotplt; |
| 1624 | sdyn = bfd_get_section_by_name (dynobj, ".dynamic"); |
| 1625 | |
| 1626 | if (htab->root.dynamic_sections_created) |
| 1627 | { |
| 1628 | asection *splt; |
| 1629 | Elf32_External_Dyn *dyncon, *dynconend; |
| 1630 | |
| 1631 | BFD_ASSERT (sgot != NULL && sdyn != NULL); |
| 1632 | |
| 1633 | dyncon = (Elf32_External_Dyn *) sdyn->contents; |
| 1634 | dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size); |
| 1635 | |
| 1636 | for (; dyncon < dynconend; dyncon++) |
| 1637 | { |
| 1638 | Elf_Internal_Dyn dyn; |
| 1639 | asection *s; |
| 1640 | |
| 1641 | bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn); |
| 1642 | |
| 1643 | switch (dyn.d_tag) |
| 1644 | { |
| 1645 | default: |
| 1646 | continue; |
| 1647 | |
| 1648 | case DT_PLTGOT: |
| 1649 | s = htab->root.sgotplt; |
| 1650 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; |
| 1651 | break; |
| 1652 | |
| 1653 | case DT_JMPREL: |
| 1654 | s = htab->root.srelplt; |
| 1655 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; |
| 1656 | break; |
| 1657 | |
| 1658 | case DT_PLTRELSZ: |
| 1659 | s = htab->root.srelplt; |
| 1660 | dyn.d_un.d_val = s->size; |
| 1661 | break; |
| 1662 | } |
| 1663 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); |
| 1664 | } |
| 1665 | |
| 1666 | |
| 1667 | /* Fill in the first entry in the procedure linkage table. */ |
| 1668 | splt = htab->root.splt; |
| 1669 | if (splt && splt->size > 0) |
| 1670 | { |
| 1671 | if (bfd_link_pic (info)) |
| 1672 | { |
| 1673 | bfd_put_32 (output_bfd, PLT0_PIC_ENTRY_WORD0, |
| 1674 | splt->contents); |
| 1675 | bfd_put_32 (output_bfd, PLT0_PIC_ENTRY_WORD1, |
| 1676 | splt->contents + 4); |
| 1677 | bfd_put_32 (output_bfd, PLT0_PIC_ENTRY_WORD2, |
| 1678 | splt->contents + 8); |
| 1679 | bfd_put_32 (output_bfd, PLT0_PIC_ENTRY_WORD3, |
| 1680 | splt->contents + 12); |
| 1681 | bfd_put_32 (output_bfd, PLT0_PIC_ENTRY_WORD4, |
| 1682 | splt->contents + 16); |
| 1683 | } |
| 1684 | else |
| 1685 | { |
| 1686 | unsigned long addr; |
| 1687 | /* addr = .got + 4 */ |
| 1688 | addr = sgot->output_section->vma + sgot->output_offset + 4; |
| 1689 | bfd_put_32 (output_bfd, |
| 1690 | PLT0_ENTRY_WORD0 | ((addr >> 16) & 0xffff), |
| 1691 | splt->contents); |
| 1692 | bfd_put_32 (output_bfd, |
| 1693 | PLT0_ENTRY_WORD1 | (addr & 0xffff), |
| 1694 | splt->contents + 4); |
| 1695 | bfd_put_32 (output_bfd, PLT0_ENTRY_WORD2, splt->contents + 8); |
| 1696 | bfd_put_32 (output_bfd, PLT0_ENTRY_WORD3, splt->contents + 12); |
| 1697 | bfd_put_32 (output_bfd, PLT0_ENTRY_WORD4, splt->contents + 16); |
| 1698 | } |
| 1699 | |
| 1700 | elf_section_data (splt->output_section)->this_hdr.sh_entsize = 4; |
| 1701 | } |
| 1702 | } |
| 1703 | |
| 1704 | /* Set the first entry in the global offset table to the address of |
| 1705 | the dynamic section. */ |
| 1706 | if (sgot && sgot->size > 0) |
| 1707 | { |
| 1708 | if (sdyn == NULL) |
| 1709 | bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents); |
| 1710 | else |
| 1711 | bfd_put_32 (output_bfd, |
| 1712 | sdyn->output_section->vma + sdyn->output_offset, |
| 1713 | sgot->contents); |
| 1714 | elf_section_data (sgot->output_section)->this_hdr.sh_entsize = 4; |
| 1715 | } |
| 1716 | |
| 1717 | if (htab->root.sgot && htab->root.sgot->size > 0) |
| 1718 | elf_section_data (htab->root.sgot->output_section)->this_hdr.sh_entsize = 4; |
| 1719 | |
| 1720 | return TRUE; |
| 1721 | } |
| 1722 | |
| 1723 | /* Finish up dynamic symbol handling. We set the contents of various |
| 1724 | dynamic sections here. */ |
| 1725 | |
| 1726 | static bfd_boolean |
| 1727 | or1k_elf_finish_dynamic_symbol (bfd *output_bfd, |
| 1728 | struct bfd_link_info *info, |
| 1729 | struct elf_link_hash_entry *h, |
| 1730 | Elf_Internal_Sym *sym) |
| 1731 | { |
| 1732 | struct elf_or1k_link_hash_table *htab; |
| 1733 | bfd_byte *loc; |
| 1734 | |
| 1735 | htab = or1k_elf_hash_table (info); |
| 1736 | if (htab == NULL) |
| 1737 | return FALSE; |
| 1738 | |
| 1739 | if (h->plt.offset != (bfd_vma) -1) |
| 1740 | { |
| 1741 | asection *splt; |
| 1742 | asection *sgot; |
| 1743 | asection *srela; |
| 1744 | |
| 1745 | bfd_vma plt_index; |
| 1746 | bfd_vma got_offset; |
| 1747 | bfd_vma got_addr; |
| 1748 | Elf_Internal_Rela rela; |
| 1749 | |
| 1750 | /* This symbol has an entry in the procedure linkage table. Set |
| 1751 | it up. */ |
| 1752 | BFD_ASSERT (h->dynindx != -1); |
| 1753 | |
| 1754 | splt = htab->root.splt; |
| 1755 | sgot = htab->root.sgotplt; |
| 1756 | srela = htab->root.srelplt; |
| 1757 | BFD_ASSERT (splt != NULL && sgot != NULL && srela != NULL); |
| 1758 | |
| 1759 | /* Get the index in the procedure linkage table which |
| 1760 | corresponds to this symbol. This is the index of this symbol |
| 1761 | in all the symbols for which we are making plt entries. The |
| 1762 | first entry in the procedure linkage table is reserved. */ |
| 1763 | plt_index = h->plt.offset / PLT_ENTRY_SIZE - 1; |
| 1764 | |
| 1765 | /* Get the offset into the .got table of the entry that |
| 1766 | corresponds to this function. Each .got entry is 4 bytes. |
| 1767 | The first three are reserved. */ |
| 1768 | got_offset = (plt_index + 3) * 4; |
| 1769 | got_addr = got_offset; |
| 1770 | |
| 1771 | /* Fill in the entry in the procedure linkage table. */ |
| 1772 | if (! bfd_link_pic (info)) |
| 1773 | { |
| 1774 | got_addr += htab->root.sgotplt->output_section->vma |
| 1775 | + htab->root.sgotplt->output_offset; |
| 1776 | bfd_put_32 (output_bfd, PLT_ENTRY_WORD0 | ((got_addr >> 16) & 0xffff), |
| 1777 | splt->contents + h->plt.offset); |
| 1778 | bfd_put_32 (output_bfd, PLT_ENTRY_WORD1 | (got_addr & 0xffff), |
| 1779 | splt->contents + h->plt.offset + 4); |
| 1780 | bfd_put_32 (output_bfd, (bfd_vma) PLT_ENTRY_WORD2, |
| 1781 | splt->contents + h->plt.offset + 8); |
| 1782 | bfd_put_32 (output_bfd, (bfd_vma) PLT_ENTRY_WORD3, |
| 1783 | splt->contents + h->plt.offset + 12); |
| 1784 | bfd_put_32 (output_bfd, PLT_ENTRY_WORD4 |
| 1785 | | plt_index * sizeof (Elf32_External_Rela), |
| 1786 | splt->contents + h->plt.offset + 16); |
| 1787 | } |
| 1788 | else |
| 1789 | { |
| 1790 | bfd_put_32 (output_bfd, PLT_PIC_ENTRY_WORD0 | (got_addr & 0xffff), |
| 1791 | splt->contents + h->plt.offset); |
| 1792 | bfd_put_32 (output_bfd, PLT_PIC_ENTRY_WORD1 |
| 1793 | | plt_index * sizeof (Elf32_External_Rela), |
| 1794 | splt->contents + h->plt.offset + 4); |
| 1795 | bfd_put_32 (output_bfd, (bfd_vma) PLT_PIC_ENTRY_WORD2, |
| 1796 | splt->contents + h->plt.offset + 8); |
| 1797 | bfd_put_32 (output_bfd, (bfd_vma) PLT_PIC_ENTRY_WORD3, |
| 1798 | splt->contents + h->plt.offset + 12); |
| 1799 | bfd_put_32 (output_bfd, (bfd_vma) PLT_PIC_ENTRY_WORD4, |
| 1800 | splt->contents + h->plt.offset + 16); |
| 1801 | } |
| 1802 | |
| 1803 | /* Fill in the entry in the global offset table. */ |
| 1804 | bfd_put_32 (output_bfd, |
| 1805 | (splt->output_section->vma |
| 1806 | + splt->output_offset), /* Same offset. */ |
| 1807 | sgot->contents + got_offset); |
| 1808 | |
| 1809 | /* Fill in the entry in the .rela.plt section. */ |
| 1810 | rela.r_offset = (sgot->output_section->vma |
| 1811 | + sgot->output_offset |
| 1812 | + got_offset); |
| 1813 | rela.r_info = ELF32_R_INFO (h->dynindx, R_OR1K_JMP_SLOT); |
| 1814 | rela.r_addend = 0; |
| 1815 | loc = srela->contents; |
| 1816 | loc += plt_index * sizeof (Elf32_External_Rela); |
| 1817 | bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); |
| 1818 | |
| 1819 | if (!h->def_regular) |
| 1820 | { |
| 1821 | /* Mark the symbol as undefined, rather than as defined in |
| 1822 | the .plt section. Leave the value alone. */ |
| 1823 | sym->st_shndx = SHN_UNDEF; |
| 1824 | } |
| 1825 | |
| 1826 | } |
| 1827 | |
| 1828 | if (h->got.offset != (bfd_vma) -1 |
| 1829 | && (h->got.offset & 2) == 0) /* Homemade TLS check. */ |
| 1830 | { |
| 1831 | asection *sgot; |
| 1832 | asection *srela; |
| 1833 | Elf_Internal_Rela rela; |
| 1834 | |
| 1835 | /* This symbol has an entry in the global offset table. Set it |
| 1836 | up. */ |
| 1837 | sgot = htab->root.sgot; |
| 1838 | srela = htab->root.srelgot; |
| 1839 | BFD_ASSERT (sgot != NULL && srela != NULL); |
| 1840 | |
| 1841 | rela.r_offset = (sgot->output_section->vma |
| 1842 | + sgot->output_offset |
| 1843 | + (h->got.offset &~ 1)); |
| 1844 | |
| 1845 | /* If this is a -Bsymbolic link, and the symbol is defined |
| 1846 | locally, we just want to emit a RELATIVE reloc. Likewise if |
| 1847 | the symbol was forced to be local because of a version file. |
| 1848 | The entry in the global offset table will already have been |
| 1849 | initialized in the relocate_section function. */ |
| 1850 | if (bfd_link_pic (info) && SYMBOL_REFERENCES_LOCAL (info, h)) |
| 1851 | { |
| 1852 | rela.r_info = ELF32_R_INFO (0, R_OR1K_RELATIVE); |
| 1853 | rela.r_addend = (h->root.u.def.value |
| 1854 | + h->root.u.def.section->output_section->vma |
| 1855 | + h->root.u.def.section->output_offset); |
| 1856 | } |
| 1857 | else |
| 1858 | { |
| 1859 | BFD_ASSERT ((h->got.offset & 1) == 0); |
| 1860 | bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + h->got.offset); |
| 1861 | rela.r_info = ELF32_R_INFO (h->dynindx, R_OR1K_GLOB_DAT); |
| 1862 | rela.r_addend = 0; |
| 1863 | } |
| 1864 | |
| 1865 | loc = srela->contents; |
| 1866 | loc += srela->reloc_count * sizeof (Elf32_External_Rela); |
| 1867 | bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); |
| 1868 | ++srela->reloc_count; |
| 1869 | } |
| 1870 | |
| 1871 | if (h->needs_copy) |
| 1872 | { |
| 1873 | asection *s; |
| 1874 | Elf_Internal_Rela rela; |
| 1875 | |
| 1876 | /* This symbols needs a copy reloc. Set it up. */ |
| 1877 | BFD_ASSERT (h->dynindx != -1 |
| 1878 | && (h->root.type == bfd_link_hash_defined |
| 1879 | || h->root.type == bfd_link_hash_defweak)); |
| 1880 | |
| 1881 | rela.r_offset = (h->root.u.def.value |
| 1882 | + h->root.u.def.section->output_section->vma |
| 1883 | + h->root.u.def.section->output_offset); |
| 1884 | rela.r_info = ELF32_R_INFO (h->dynindx, R_OR1K_COPY); |
| 1885 | rela.r_addend = 0; |
| 1886 | if (h->root.u.def.section == htab->root.sdynrelro) |
| 1887 | s = htab->root.sreldynrelro; |
| 1888 | else |
| 1889 | s = htab->root.srelbss; |
| 1890 | loc = s->contents + s->reloc_count * sizeof (Elf32_External_Rela); |
| 1891 | bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); |
| 1892 | ++s->reloc_count; |
| 1893 | } |
| 1894 | |
| 1895 | /* Mark some specially defined symbols as absolute. */ |
| 1896 | if (strcmp (h->root.root.string, "_DYNAMIC") == 0 |
| 1897 | || h == htab->root.hgot) |
| 1898 | sym->st_shndx = SHN_ABS; |
| 1899 | |
| 1900 | return TRUE; |
| 1901 | } |
| 1902 | |
| 1903 | static enum elf_reloc_type_class |
| 1904 | or1k_elf_reloc_type_class (const struct bfd_link_info *info ATTRIBUTE_UNUSED, |
| 1905 | const asection *rel_sec ATTRIBUTE_UNUSED, |
| 1906 | const Elf_Internal_Rela *rela) |
| 1907 | { |
| 1908 | switch ((int) ELF32_R_TYPE (rela->r_info)) |
| 1909 | { |
| 1910 | case R_OR1K_RELATIVE: return reloc_class_relative; |
| 1911 | case R_OR1K_JMP_SLOT: return reloc_class_plt; |
| 1912 | case R_OR1K_COPY: return reloc_class_copy; |
| 1913 | default: return reloc_class_normal; |
| 1914 | } |
| 1915 | } |
| 1916 | |
| 1917 | /* Find dynamic relocs for H that apply to read-only sections. */ |
| 1918 | |
| 1919 | static asection * |
| 1920 | readonly_dynrelocs (struct elf_link_hash_entry *h) |
| 1921 | { |
| 1922 | struct elf_dyn_relocs *p; |
| 1923 | struct elf_or1k_link_hash_entry *eh = (struct elf_or1k_link_hash_entry *) h; |
| 1924 | |
| 1925 | for (p = eh->dyn_relocs; p != NULL; p = p->next) |
| 1926 | { |
| 1927 | asection *s = p->sec->output_section; |
| 1928 | |
| 1929 | if (s != NULL && (s->flags & SEC_READONLY) != 0) |
| 1930 | return p->sec; |
| 1931 | } |
| 1932 | return NULL; |
| 1933 | } |
| 1934 | |
| 1935 | /* Adjust a symbol defined by a dynamic object and referenced by a |
| 1936 | regular object. The current definition is in some section of the |
| 1937 | dynamic object, but we're not including those sections. We have to |
| 1938 | change the definition to something the rest of the link can |
| 1939 | understand. */ |
| 1940 | |
| 1941 | static bfd_boolean |
| 1942 | or1k_elf_adjust_dynamic_symbol (struct bfd_link_info *info, |
| 1943 | struct elf_link_hash_entry *h) |
| 1944 | { |
| 1945 | struct elf_or1k_link_hash_table *htab; |
| 1946 | bfd *dynobj; |
| 1947 | asection *s, *srel; |
| 1948 | |
| 1949 | dynobj = elf_hash_table (info)->dynobj; |
| 1950 | |
| 1951 | /* Make sure we know what is going on here. */ |
| 1952 | BFD_ASSERT (dynobj != NULL |
| 1953 | && (h->needs_plt |
| 1954 | || h->is_weakalias |
| 1955 | || (h->def_dynamic |
| 1956 | && h->ref_regular |
| 1957 | && !h->def_regular))); |
| 1958 | |
| 1959 | /* If this is a function, put it in the procedure linkage table. We |
| 1960 | will fill in the contents of the procedure linkage table later, |
| 1961 | when we know the address of the .got section. */ |
| 1962 | if (h->type == STT_FUNC |
| 1963 | || h->needs_plt) |
| 1964 | { |
| 1965 | if (! bfd_link_pic (info) |
| 1966 | && !h->def_dynamic |
| 1967 | && !h->ref_dynamic |
| 1968 | && h->root.type != bfd_link_hash_undefweak |
| 1969 | && h->root.type != bfd_link_hash_undefined) |
| 1970 | { |
| 1971 | /* This case can occur if we saw a PLT reloc in an input |
| 1972 | file, but the symbol was never referred to by a dynamic |
| 1973 | object. In such a case, we don't actually need to build |
| 1974 | a procedure linkage table, and we can just do a PCREL |
| 1975 | reloc instead. */ |
| 1976 | h->plt.offset = (bfd_vma) -1; |
| 1977 | h->needs_plt = 0; |
| 1978 | } |
| 1979 | |
| 1980 | return TRUE; |
| 1981 | } |
| 1982 | else |
| 1983 | h->plt.offset = (bfd_vma) -1; |
| 1984 | |
| 1985 | /* If this is a weak symbol, and there is a real definition, the |
| 1986 | processor independent code will have arranged for us to see the |
| 1987 | real definition first, and we can just use the same value. */ |
| 1988 | if (h->is_weakalias) |
| 1989 | { |
| 1990 | struct elf_link_hash_entry *def = weakdef (h); |
| 1991 | BFD_ASSERT (def->root.type == bfd_link_hash_defined); |
| 1992 | h->root.u.def.section = def->root.u.def.section; |
| 1993 | h->root.u.def.value = def->root.u.def.value; |
| 1994 | return TRUE; |
| 1995 | } |
| 1996 | |
| 1997 | /* This is a reference to a symbol defined by a dynamic object which |
| 1998 | is not a function. */ |
| 1999 | |
| 2000 | /* If we are creating a shared library, we must presume that the |
| 2001 | only references to the symbol are via the global offset table. |
| 2002 | For such cases we need not do anything here; the relocations will |
| 2003 | be handled correctly by relocate_section. */ |
| 2004 | if (bfd_link_pic (info)) |
| 2005 | return TRUE; |
| 2006 | |
| 2007 | /* If there are no references to this symbol that do not use the |
| 2008 | GOT, we don't need to generate a copy reloc. */ |
| 2009 | if (!h->non_got_ref) |
| 2010 | return TRUE; |
| 2011 | |
| 2012 | /* If -z nocopyreloc was given, we won't generate them either. */ |
| 2013 | if (info->nocopyreloc) |
| 2014 | { |
| 2015 | h->non_got_ref = 0; |
| 2016 | return TRUE; |
| 2017 | } |
| 2018 | |
| 2019 | /* If we don't find any dynamic relocs in read-only sections, then |
| 2020 | we'll be keeping the dynamic relocs and avoiding the copy reloc. */ |
| 2021 | if (!readonly_dynrelocs (h)) |
| 2022 | { |
| 2023 | h->non_got_ref = 0; |
| 2024 | return TRUE; |
| 2025 | } |
| 2026 | |
| 2027 | /* We must allocate the symbol in our .dynbss section, which will |
| 2028 | become part of the .bss section of the executable. There will be |
| 2029 | an entry for this symbol in the .dynsym section. The dynamic |
| 2030 | object will contain position independent code, so all references |
| 2031 | from the dynamic object to this symbol will go through the global |
| 2032 | offset table. The dynamic linker will use the .dynsym entry to |
| 2033 | determine the address it must put in the global offset table, so |
| 2034 | both the dynamic object and the regular object will refer to the |
| 2035 | same memory location for the variable. */ |
| 2036 | |
| 2037 | htab = or1k_elf_hash_table (info); |
| 2038 | if (htab == NULL) |
| 2039 | return FALSE; |
| 2040 | |
| 2041 | /* We must generate a R_OR1K_COPY reloc to tell the dynamic linker |
| 2042 | to copy the initial value out of the dynamic object and into the |
| 2043 | runtime process image. We need to remember the offset into the |
| 2044 | .rela.bss section we are going to use. */ |
| 2045 | if ((h->root.u.def.section->flags & SEC_READONLY) != 0) |
| 2046 | { |
| 2047 | s = htab->root.sdynrelro; |
| 2048 | srel = htab->root.sreldynrelro; |
| 2049 | } |
| 2050 | else |
| 2051 | { |
| 2052 | s = htab->root.sdynbss; |
| 2053 | srel = htab->root.srelbss; |
| 2054 | } |
| 2055 | if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0) |
| 2056 | { |
| 2057 | srel->size += sizeof (Elf32_External_Rela); |
| 2058 | h->needs_copy = 1; |
| 2059 | } |
| 2060 | |
| 2061 | return _bfd_elf_adjust_dynamic_copy (info, h, s); |
| 2062 | } |
| 2063 | |
| 2064 | /* Allocate space in .plt, .got and associated reloc sections for |
| 2065 | dynamic relocs. */ |
| 2066 | |
| 2067 | static bfd_boolean |
| 2068 | allocate_dynrelocs (struct elf_link_hash_entry *h, void * inf) |
| 2069 | { |
| 2070 | struct bfd_link_info *info; |
| 2071 | struct elf_or1k_link_hash_table *htab; |
| 2072 | struct elf_or1k_link_hash_entry *eh; |
| 2073 | struct elf_dyn_relocs *p; |
| 2074 | |
| 2075 | if (h->root.type == bfd_link_hash_indirect) |
| 2076 | return TRUE; |
| 2077 | |
| 2078 | info = (struct bfd_link_info *) inf; |
| 2079 | htab = or1k_elf_hash_table (info); |
| 2080 | if (htab == NULL) |
| 2081 | return FALSE; |
| 2082 | |
| 2083 | eh = (struct elf_or1k_link_hash_entry *) h; |
| 2084 | |
| 2085 | if (htab->root.dynamic_sections_created |
| 2086 | && h->plt.refcount > 0) |
| 2087 | { |
| 2088 | /* Make sure this symbol is output as a dynamic symbol. |
| 2089 | Undefined weak syms won't yet be marked as dynamic. */ |
| 2090 | if (h->dynindx == -1 |
| 2091 | && !h->forced_local) |
| 2092 | { |
| 2093 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
| 2094 | return FALSE; |
| 2095 | } |
| 2096 | |
| 2097 | if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, bfd_link_pic (info), h)) |
| 2098 | { |
| 2099 | asection *s = htab->root.splt; |
| 2100 | |
| 2101 | /* If this is the first .plt entry, make room for the special |
| 2102 | first entry. */ |
| 2103 | if (s->size == 0) |
| 2104 | s->size = PLT_ENTRY_SIZE; |
| 2105 | |
| 2106 | h->plt.offset = s->size; |
| 2107 | |
| 2108 | /* If this symbol is not defined in a regular file, and we are |
| 2109 | not generating a shared library, then set the symbol to this |
| 2110 | location in the .plt. This is required to make function |
| 2111 | pointers compare as equal between the normal executable and |
| 2112 | the shared library. */ |
| 2113 | if (! bfd_link_pic (info) |
| 2114 | && !h->def_regular) |
| 2115 | { |
| 2116 | h->root.u.def.section = s; |
| 2117 | h->root.u.def.value = h->plt.offset; |
| 2118 | } |
| 2119 | |
| 2120 | /* Make room for this entry. */ |
| 2121 | s->size += PLT_ENTRY_SIZE; |
| 2122 | |
| 2123 | /* We also need to make an entry in the .got.plt section, which |
| 2124 | will be placed in the .got section by the linker script. */ |
| 2125 | htab->root.sgotplt->size += 4; |
| 2126 | |
| 2127 | /* We also need to make an entry in the .rel.plt section. */ |
| 2128 | htab->root.srelplt->size += sizeof (Elf32_External_Rela); |
| 2129 | } |
| 2130 | else |
| 2131 | { |
| 2132 | h->plt.offset = (bfd_vma) -1; |
| 2133 | h->needs_plt = 0; |
| 2134 | } |
| 2135 | } |
| 2136 | else |
| 2137 | { |
| 2138 | h->plt.offset = (bfd_vma) -1; |
| 2139 | h->needs_plt = 0; |
| 2140 | } |
| 2141 | |
| 2142 | if (h->got.refcount > 0) |
| 2143 | { |
| 2144 | asection *s; |
| 2145 | bfd_boolean dyn; |
| 2146 | unsigned char tls_type; |
| 2147 | |
| 2148 | /* Make sure this symbol is output as a dynamic symbol. |
| 2149 | Undefined weak syms won't yet be marked as dynamic. */ |
| 2150 | if (h->dynindx == -1 |
| 2151 | && !h->forced_local) |
| 2152 | { |
| 2153 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
| 2154 | return FALSE; |
| 2155 | } |
| 2156 | |
| 2157 | s = htab->root.sgot; |
| 2158 | |
| 2159 | h->got.offset = s->size; |
| 2160 | |
| 2161 | tls_type = ((struct elf_or1k_link_hash_entry *) h)->tls_type; |
| 2162 | |
| 2163 | /* TLS GD requires two GOT and two relocs. */ |
| 2164 | if (tls_type == TLS_GD) |
| 2165 | s->size += 8; |
| 2166 | else |
| 2167 | s->size += 4; |
| 2168 | dyn = htab->root.dynamic_sections_created; |
| 2169 | if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, bfd_link_pic (info), h)) |
| 2170 | { |
| 2171 | if (tls_type == TLS_GD) |
| 2172 | htab->root.srelgot->size += 2 * sizeof (Elf32_External_Rela); |
| 2173 | else |
| 2174 | htab->root.srelgot->size += sizeof (Elf32_External_Rela); |
| 2175 | } |
| 2176 | } |
| 2177 | else |
| 2178 | h->got.offset = (bfd_vma) -1; |
| 2179 | |
| 2180 | if (eh->dyn_relocs == NULL) |
| 2181 | return TRUE; |
| 2182 | |
| 2183 | /* In the shared -Bsymbolic case, discard space allocated for |
| 2184 | dynamic pc-relative relocs against symbols which turn out to be |
| 2185 | defined in regular objects. For the normal shared case, discard |
| 2186 | space for pc-relative relocs that have become local due to symbol |
| 2187 | visibility changes. */ |
| 2188 | |
| 2189 | if (bfd_link_pic (info)) |
| 2190 | { |
| 2191 | if (SYMBOL_CALLS_LOCAL (info, h)) |
| 2192 | { |
| 2193 | struct elf_dyn_relocs **pp; |
| 2194 | |
| 2195 | for (pp = &eh->dyn_relocs; (p = *pp) != NULL;) |
| 2196 | { |
| 2197 | p->count -= p->pc_count; |
| 2198 | p->pc_count = 0; |
| 2199 | if (p->count == 0) |
| 2200 | *pp = p->next; |
| 2201 | else |
| 2202 | pp = &p->next; |
| 2203 | } |
| 2204 | } |
| 2205 | |
| 2206 | /* Also discard relocs on undefined weak syms with non-default |
| 2207 | visibility. */ |
| 2208 | if (eh->dyn_relocs != NULL |
| 2209 | && h->root.type == bfd_link_hash_undefweak) |
| 2210 | { |
| 2211 | if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT) |
| 2212 | eh->dyn_relocs = NULL; |
| 2213 | |
| 2214 | /* Make sure undefined weak symbols are output as a dynamic |
| 2215 | symbol in PIEs. */ |
| 2216 | else if (h->dynindx == -1 |
| 2217 | && !h->forced_local) |
| 2218 | { |
| 2219 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
| 2220 | return FALSE; |
| 2221 | } |
| 2222 | } |
| 2223 | } |
| 2224 | else |
| 2225 | { |
| 2226 | /* For the non-shared case, discard space for relocs against |
| 2227 | symbols which turn out to need copy relocs or are not |
| 2228 | dynamic. */ |
| 2229 | |
| 2230 | if (!h->non_got_ref |
| 2231 | && ((h->def_dynamic |
| 2232 | && !h->def_regular) |
| 2233 | || (htab->root.dynamic_sections_created |
| 2234 | && (h->root.type == bfd_link_hash_undefweak |
| 2235 | || h->root.type == bfd_link_hash_undefined)))) |
| 2236 | { |
| 2237 | /* Make sure this symbol is output as a dynamic symbol. |
| 2238 | Undefined weak syms won't yet be marked as dynamic. */ |
| 2239 | if (h->dynindx == -1 |
| 2240 | && !h->forced_local) |
| 2241 | { |
| 2242 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
| 2243 | return FALSE; |
| 2244 | } |
| 2245 | |
| 2246 | /* If that succeeded, we know we'll be keeping all the |
| 2247 | relocs. */ |
| 2248 | if (h->dynindx != -1) |
| 2249 | goto keep; |
| 2250 | } |
| 2251 | |
| 2252 | eh->dyn_relocs = NULL; |
| 2253 | |
| 2254 | keep: ; |
| 2255 | } |
| 2256 | |
| 2257 | /* Finally, allocate space. */ |
| 2258 | for (p = eh->dyn_relocs; p != NULL; p = p->next) |
| 2259 | { |
| 2260 | asection *sreloc = elf_section_data (p->sec)->sreloc; |
| 2261 | sreloc->size += p->count * sizeof (Elf32_External_Rela); |
| 2262 | } |
| 2263 | |
| 2264 | return TRUE; |
| 2265 | } |
| 2266 | |
| 2267 | /* Set DF_TEXTREL if we find any dynamic relocs that apply to |
| 2268 | read-only sections. */ |
| 2269 | |
| 2270 | static bfd_boolean |
| 2271 | maybe_set_textrel (struct elf_link_hash_entry *h, void *info_p) |
| 2272 | { |
| 2273 | asection *sec; |
| 2274 | |
| 2275 | if (h->root.type == bfd_link_hash_indirect) |
| 2276 | return TRUE; |
| 2277 | |
| 2278 | sec = readonly_dynrelocs (h); |
| 2279 | if (sec != NULL) |
| 2280 | { |
| 2281 | struct bfd_link_info *info = (struct bfd_link_info *) info_p; |
| 2282 | |
| 2283 | info->flags |= DF_TEXTREL; |
| 2284 | info->callbacks->minfo |
| 2285 | (_("%pB: dynamic relocation against `%pT' in read-only section `%pA'\n"), |
| 2286 | sec->owner, h->root.root.string, sec); |
| 2287 | |
| 2288 | /* Not an error, just cut short the traversal. */ |
| 2289 | return FALSE; |
| 2290 | } |
| 2291 | return TRUE; |
| 2292 | } |
| 2293 | |
| 2294 | /* Set the sizes of the dynamic sections. */ |
| 2295 | |
| 2296 | static bfd_boolean |
| 2297 | or1k_elf_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED, |
| 2298 | struct bfd_link_info *info) |
| 2299 | { |
| 2300 | struct elf_or1k_link_hash_table *htab; |
| 2301 | bfd *dynobj; |
| 2302 | asection *s; |
| 2303 | bfd_boolean relocs; |
| 2304 | bfd *ibfd; |
| 2305 | |
| 2306 | htab = or1k_elf_hash_table (info); |
| 2307 | if (htab == NULL) |
| 2308 | return FALSE; |
| 2309 | |
| 2310 | dynobj = htab->root.dynobj; |
| 2311 | BFD_ASSERT (dynobj != NULL); |
| 2312 | |
| 2313 | if (htab->root.dynamic_sections_created) |
| 2314 | { |
| 2315 | /* Set the contents of the .interp section to the interpreter. */ |
| 2316 | if (bfd_link_executable (info) && !info->nointerp) |
| 2317 | { |
| 2318 | s = bfd_get_section_by_name (dynobj, ".interp"); |
| 2319 | BFD_ASSERT (s != NULL); |
| 2320 | s->size = sizeof ELF_DYNAMIC_INTERPRETER; |
| 2321 | s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER; |
| 2322 | } |
| 2323 | } |
| 2324 | |
| 2325 | /* Set up .got offsets for local syms, and space for local dynamic |
| 2326 | relocs. */ |
| 2327 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
| 2328 | { |
| 2329 | bfd_signed_vma *local_got; |
| 2330 | bfd_signed_vma *end_local_got; |
| 2331 | bfd_size_type locsymcount; |
| 2332 | Elf_Internal_Shdr *symtab_hdr; |
| 2333 | unsigned char *local_tls_type; |
| 2334 | asection *srel; |
| 2335 | |
| 2336 | if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour) |
| 2337 | continue; |
| 2338 | |
| 2339 | for (s = ibfd->sections; s != NULL; s = s->next) |
| 2340 | { |
| 2341 | struct elf_dyn_relocs *p; |
| 2342 | |
| 2343 | for (p = ((struct elf_dyn_relocs *) |
| 2344 | elf_section_data (s)->local_dynrel); |
| 2345 | p != NULL; |
| 2346 | p = p->next) |
| 2347 | { |
| 2348 | if (! bfd_is_abs_section (p->sec) |
| 2349 | && bfd_is_abs_section (p->sec->output_section)) |
| 2350 | { |
| 2351 | /* Input section has been discarded, either because |
| 2352 | it is a copy of a linkonce section or due to |
| 2353 | linker script /DISCARD/, so we'll be discarding |
| 2354 | the relocs too. */ |
| 2355 | } |
| 2356 | else if (p->count != 0) |
| 2357 | { |
| 2358 | srel = elf_section_data (p->sec)->sreloc; |
| 2359 | srel->size += p->count * sizeof (Elf32_External_Rela); |
| 2360 | if ((p->sec->output_section->flags & SEC_READONLY) != 0) |
| 2361 | info->flags |= DF_TEXTREL; |
| 2362 | } |
| 2363 | } |
| 2364 | } |
| 2365 | |
| 2366 | local_got = elf_local_got_refcounts (ibfd); |
| 2367 | if (!local_got) |
| 2368 | continue; |
| 2369 | |
| 2370 | symtab_hdr = &elf_tdata (ibfd)->symtab_hdr; |
| 2371 | locsymcount = symtab_hdr->sh_info; |
| 2372 | end_local_got = local_got + locsymcount; |
| 2373 | s = htab->root.sgot; |
| 2374 | srel = htab->root.srelgot; |
| 2375 | local_tls_type = (unsigned char *) elf_or1k_local_tls_type (ibfd); |
| 2376 | for (; local_got < end_local_got; ++local_got) |
| 2377 | { |
| 2378 | if (*local_got > 0) |
| 2379 | { |
| 2380 | *local_got = s->size; |
| 2381 | |
| 2382 | /* TLS GD requires two GOT and two relocs. */ |
| 2383 | if (local_tls_type != NULL && *local_tls_type == TLS_GD) |
| 2384 | s->size += 8; |
| 2385 | else |
| 2386 | s->size += 4; |
| 2387 | if (bfd_link_pic (info)) |
| 2388 | { |
| 2389 | if (local_tls_type != NULL && *local_tls_type == TLS_GD) |
| 2390 | srel->size += 2 * sizeof (Elf32_External_Rela); |
| 2391 | else |
| 2392 | srel->size += sizeof (Elf32_External_Rela); |
| 2393 | } |
| 2394 | } |
| 2395 | else |
| 2396 | |
| 2397 | *local_got = (bfd_vma) -1; |
| 2398 | |
| 2399 | if (local_tls_type) |
| 2400 | ++local_tls_type; |
| 2401 | } |
| 2402 | } |
| 2403 | |
| 2404 | /* Allocate global sym .plt and .got entries, and space for global |
| 2405 | sym dynamic relocs. */ |
| 2406 | elf_link_hash_traverse (&htab->root, allocate_dynrelocs, info); |
| 2407 | |
| 2408 | /* We now have determined the sizes of the various dynamic sections. |
| 2409 | Allocate memory for them. */ |
| 2410 | relocs = FALSE; |
| 2411 | for (s = dynobj->sections; s != NULL; s = s->next) |
| 2412 | { |
| 2413 | if ((s->flags & SEC_LINKER_CREATED) == 0) |
| 2414 | continue; |
| 2415 | |
| 2416 | if (s == htab->root.splt |
| 2417 | || s == htab->root.sgot |
| 2418 | || s == htab->root.sgotplt |
| 2419 | || s == htab->root.sdynbss |
| 2420 | || s == htab->root.sdynrelro) |
| 2421 | { |
| 2422 | /* Strip this section if we don't need it; see the |
| 2423 | comment below. */ |
| 2424 | } |
| 2425 | else if (CONST_STRNEQ (bfd_get_section_name (dynobj, s), ".rela")) |
| 2426 | { |
| 2427 | if (s->size != 0 && s != htab->root.srelplt) |
| 2428 | relocs = TRUE; |
| 2429 | |
| 2430 | /* We use the reloc_count field as a counter if we need |
| 2431 | to copy relocs into the output file. */ |
| 2432 | s->reloc_count = 0; |
| 2433 | } |
| 2434 | else |
| 2435 | /* It's not one of our sections, so don't allocate space. */ |
| 2436 | continue; |
| 2437 | |
| 2438 | if (s->size == 0) |
| 2439 | { |
| 2440 | /* If we don't need this section, strip it from the |
| 2441 | output file. This is mostly to handle .rela.bss and |
| 2442 | .rela.plt. We must create both sections in |
| 2443 | create_dynamic_sections, because they must be created |
| 2444 | before the linker maps input sections to output |
| 2445 | sections. The linker does that before |
| 2446 | adjust_dynamic_symbol is called, and it is that |
| 2447 | function which decides whether anything needs to go |
| 2448 | into these sections. */ |
| 2449 | s->flags |= SEC_EXCLUDE; |
| 2450 | continue; |
| 2451 | } |
| 2452 | |
| 2453 | if ((s->flags & SEC_HAS_CONTENTS) == 0) |
| 2454 | continue; |
| 2455 | |
| 2456 | /* Allocate memory for the section contents. We use bfd_zalloc |
| 2457 | here in case unused entries are not reclaimed before the |
| 2458 | section's contents are written out. This should not happen, |
| 2459 | but this way if it does, we get a R_OR1K_NONE reloc instead |
| 2460 | of garbage. */ |
| 2461 | s->contents = bfd_zalloc (dynobj, s->size); |
| 2462 | |
| 2463 | if (s->contents == NULL) |
| 2464 | return FALSE; |
| 2465 | } |
| 2466 | |
| 2467 | if (htab->root.dynamic_sections_created) |
| 2468 | { |
| 2469 | /* Add some entries to the .dynamic section. We fill in the |
| 2470 | values later, in or1k_elf_finish_dynamic_sections, but we |
| 2471 | must add the entries now so that we get the correct size for |
| 2472 | the .dynamic section. The DT_DEBUG entry is filled in by the |
| 2473 | dynamic linker and used by the debugger. */ |
| 2474 | #define add_dynamic_entry(TAG, VAL) \ |
| 2475 | _bfd_elf_add_dynamic_entry (info, TAG, VAL) |
| 2476 | |
| 2477 | if (bfd_link_executable (info)) |
| 2478 | { |
| 2479 | if (! add_dynamic_entry (DT_DEBUG, 0)) |
| 2480 | return FALSE; |
| 2481 | } |
| 2482 | |
| 2483 | if (htab->root.splt->size != 0) |
| 2484 | { |
| 2485 | if (! add_dynamic_entry (DT_PLTGOT, 0) |
| 2486 | || ! add_dynamic_entry (DT_PLTRELSZ, 0) |
| 2487 | || ! add_dynamic_entry (DT_PLTREL, DT_RELA) |
| 2488 | || ! add_dynamic_entry (DT_JMPREL, 0)) |
| 2489 | return FALSE; |
| 2490 | } |
| 2491 | |
| 2492 | if (relocs) |
| 2493 | { |
| 2494 | if (! add_dynamic_entry (DT_RELA, 0) |
| 2495 | || ! add_dynamic_entry (DT_RELASZ, 0) |
| 2496 | || ! add_dynamic_entry (DT_RELAENT, |
| 2497 | sizeof (Elf32_External_Rela))) |
| 2498 | return FALSE; |
| 2499 | |
| 2500 | /* If any dynamic relocs apply to a read-only section, |
| 2501 | then we need a DT_TEXTREL entry. */ |
| 2502 | if ((info->flags & DF_TEXTREL) == 0) |
| 2503 | elf_link_hash_traverse (&htab->root, maybe_set_textrel, info); |
| 2504 | |
| 2505 | if ((info->flags & DF_TEXTREL) != 0) |
| 2506 | { |
| 2507 | if (! add_dynamic_entry (DT_TEXTREL, 0)) |
| 2508 | return FALSE; |
| 2509 | } |
| 2510 | } |
| 2511 | } |
| 2512 | |
| 2513 | #undef add_dynamic_entry |
| 2514 | return TRUE; |
| 2515 | } |
| 2516 | |
| 2517 | /* Copy the extra info we tack onto an elf_link_hash_entry. */ |
| 2518 | |
| 2519 | static void |
| 2520 | or1k_elf_copy_indirect_symbol (struct bfd_link_info *info, |
| 2521 | struct elf_link_hash_entry *dir, |
| 2522 | struct elf_link_hash_entry *ind) |
| 2523 | { |
| 2524 | struct elf_or1k_link_hash_entry * edir; |
| 2525 | struct elf_or1k_link_hash_entry * eind; |
| 2526 | |
| 2527 | edir = (struct elf_or1k_link_hash_entry *) dir; |
| 2528 | eind = (struct elf_or1k_link_hash_entry *) ind; |
| 2529 | |
| 2530 | if (eind->dyn_relocs != NULL) |
| 2531 | { |
| 2532 | if (edir->dyn_relocs != NULL) |
| 2533 | { |
| 2534 | struct elf_dyn_relocs **pp; |
| 2535 | struct elf_dyn_relocs *p; |
| 2536 | |
| 2537 | /* Add reloc counts against the indirect sym to the direct sym |
| 2538 | list. Merge any entries against the same section. */ |
| 2539 | for (pp = &eind->dyn_relocs; (p = *pp) != NULL;) |
| 2540 | { |
| 2541 | struct elf_dyn_relocs *q; |
| 2542 | |
| 2543 | for (q = edir->dyn_relocs; q != NULL; q = q->next) |
| 2544 | if (q->sec == p->sec) |
| 2545 | { |
| 2546 | q->pc_count += p->pc_count; |
| 2547 | q->count += p->count; |
| 2548 | *pp = p->next; |
| 2549 | break; |
| 2550 | } |
| 2551 | if (q == NULL) |
| 2552 | pp = &p->next; |
| 2553 | } |
| 2554 | *pp = edir->dyn_relocs; |
| 2555 | } |
| 2556 | |
| 2557 | edir->dyn_relocs = eind->dyn_relocs; |
| 2558 | eind->dyn_relocs = NULL; |
| 2559 | } |
| 2560 | |
| 2561 | if (ind->root.type == bfd_link_hash_indirect) |
| 2562 | { |
| 2563 | if (dir->got.refcount <= 0) |
| 2564 | { |
| 2565 | edir->tls_type = eind->tls_type; |
| 2566 | eind->tls_type = TLS_UNKNOWN; |
| 2567 | } |
| 2568 | } |
| 2569 | |
| 2570 | _bfd_elf_link_hash_copy_indirect (info, dir, ind); |
| 2571 | } |
| 2572 | |
| 2573 | /* Set the right machine number. */ |
| 2574 | |
| 2575 | static bfd_boolean |
| 2576 | or1k_elf_object_p (bfd *abfd) |
| 2577 | { |
| 2578 | unsigned long mach = bfd_mach_or1k; |
| 2579 | |
| 2580 | if (elf_elfheader (abfd)->e_flags & EF_OR1K_NODELAY) |
| 2581 | mach = bfd_mach_or1knd; |
| 2582 | |
| 2583 | return bfd_default_set_arch_mach (abfd, bfd_arch_or1k, mach); |
| 2584 | } |
| 2585 | |
| 2586 | /* Store the machine number in the flags field. */ |
| 2587 | |
| 2588 | static void |
| 2589 | or1k_elf_final_write_processing (bfd *abfd, |
| 2590 | bfd_boolean linker ATTRIBUTE_UNUSED) |
| 2591 | { |
| 2592 | switch (bfd_get_mach (abfd)) |
| 2593 | { |
| 2594 | default: |
| 2595 | case bfd_mach_or1k: |
| 2596 | break; |
| 2597 | case bfd_mach_or1knd: |
| 2598 | elf_elfheader (abfd)->e_flags |= EF_OR1K_NODELAY; |
| 2599 | break; |
| 2600 | } |
| 2601 | } |
| 2602 | |
| 2603 | static bfd_boolean |
| 2604 | or1k_elf_set_private_flags (bfd *abfd, flagword flags) |
| 2605 | { |
| 2606 | BFD_ASSERT (!elf_flags_init (abfd) |
| 2607 | || elf_elfheader (abfd)->e_flags == flags); |
| 2608 | |
| 2609 | elf_elfheader (abfd)->e_flags = flags; |
| 2610 | elf_flags_init (abfd) = TRUE; |
| 2611 | return TRUE; |
| 2612 | } |
| 2613 | |
| 2614 | /* Make sure all input files are consistent with respect to |
| 2615 | EF_OR1K_NODELAY flag setting. */ |
| 2616 | |
| 2617 | static bfd_boolean |
| 2618 | elf32_or1k_merge_private_bfd_data (bfd *ibfd, struct bfd_link_info *info) |
| 2619 | { |
| 2620 | bfd *obfd = info->output_bfd; |
| 2621 | flagword out_flags; |
| 2622 | flagword in_flags; |
| 2623 | |
| 2624 | in_flags = elf_elfheader (ibfd)->e_flags; |
| 2625 | out_flags = elf_elfheader (obfd)->e_flags; |
| 2626 | |
| 2627 | if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour |
| 2628 | || bfd_get_flavour (obfd) != bfd_target_elf_flavour) |
| 2629 | return TRUE; |
| 2630 | |
| 2631 | if (!elf_flags_init (obfd)) |
| 2632 | { |
| 2633 | elf_flags_init (obfd) = TRUE; |
| 2634 | elf_elfheader (obfd)->e_flags = in_flags; |
| 2635 | |
| 2636 | return TRUE; |
| 2637 | } |
| 2638 | |
| 2639 | if (in_flags == out_flags) |
| 2640 | return TRUE; |
| 2641 | |
| 2642 | if ((in_flags & EF_OR1K_NODELAY) != (out_flags & EF_OR1K_NODELAY)) |
| 2643 | { |
| 2644 | _bfd_error_handler |
| 2645 | (_("%pB: %s flag mismatch with previous modules"), |
| 2646 | ibfd, "EF_OR1K_NODELAY"); |
| 2647 | |
| 2648 | bfd_set_error (bfd_error_bad_value); |
| 2649 | return FALSE; |
| 2650 | } |
| 2651 | |
| 2652 | return TRUE; |
| 2653 | |
| 2654 | } |
| 2655 | |
| 2656 | #define ELF_ARCH bfd_arch_or1k |
| 2657 | #define ELF_MACHINE_CODE EM_OR1K |
| 2658 | #define ELF_TARGET_ID OR1K_ELF_DATA |
| 2659 | #define ELF_MAXPAGESIZE 0x2000 |
| 2660 | |
| 2661 | #define TARGET_BIG_SYM or1k_elf32_vec |
| 2662 | #define TARGET_BIG_NAME "elf32-or1k" |
| 2663 | |
| 2664 | #define elf_info_to_howto_rel NULL |
| 2665 | #define elf_info_to_howto or1k_info_to_howto_rela |
| 2666 | #define elf_backend_relocate_section or1k_elf_relocate_section |
| 2667 | #define elf_backend_gc_mark_hook or1k_elf_gc_mark_hook |
| 2668 | #define elf_backend_check_relocs or1k_elf_check_relocs |
| 2669 | #define elf_backend_reloc_type_class or1k_elf_reloc_type_class |
| 2670 | #define elf_backend_can_gc_sections 1 |
| 2671 | #define elf_backend_rela_normal 1 |
| 2672 | |
| 2673 | #define bfd_elf32_mkobject elf_or1k_mkobject |
| 2674 | |
| 2675 | #define bfd_elf32_bfd_merge_private_bfd_data elf32_or1k_merge_private_bfd_data |
| 2676 | #define bfd_elf32_bfd_set_private_flags or1k_elf_set_private_flags |
| 2677 | #define bfd_elf32_bfd_reloc_type_lookup or1k_reloc_type_lookup |
| 2678 | #define bfd_elf32_bfd_reloc_name_lookup or1k_reloc_name_lookup |
| 2679 | |
| 2680 | #define elf_backend_object_p or1k_elf_object_p |
| 2681 | #define elf_backend_final_write_processing or1k_elf_final_write_processing |
| 2682 | #define elf_backend_can_refcount 1 |
| 2683 | |
| 2684 | #define elf_backend_plt_readonly 1 |
| 2685 | #define elf_backend_want_got_plt 1 |
| 2686 | #define elf_backend_want_plt_sym 0 |
| 2687 | #define elf_backend_got_header_size 12 |
| 2688 | #define elf_backend_dtrel_excludes_plt 1 |
| 2689 | #define elf_backend_want_dynrelro 1 |
| 2690 | |
| 2691 | #define bfd_elf32_bfd_link_hash_table_create or1k_elf_link_hash_table_create |
| 2692 | #define elf_backend_copy_indirect_symbol or1k_elf_copy_indirect_symbol |
| 2693 | #define elf_backend_create_dynamic_sections _bfd_elf_create_dynamic_sections |
| 2694 | #define elf_backend_finish_dynamic_sections or1k_elf_finish_dynamic_sections |
| 2695 | #define elf_backend_size_dynamic_sections or1k_elf_size_dynamic_sections |
| 2696 | #define elf_backend_adjust_dynamic_symbol or1k_elf_adjust_dynamic_symbol |
| 2697 | #define elf_backend_finish_dynamic_symbol or1k_elf_finish_dynamic_symbol |
| 2698 | |
| 2699 | #include "elf32-target.h" |