| 1 | /* FRV-specific support for 32-bit ELF. |
| 2 | Copyright 2002, 2003, 2004, 2005, 2006 Free Software Foundation, Inc. |
| 3 | |
| 4 | This file is part of BFD, the Binary File Descriptor library. |
| 5 | |
| 6 | This program is free software; you can redistribute it and/or modify |
| 7 | it under the terms of the GNU General Public License as published by |
| 8 | the Free Software Foundation; either version 2 of the License, or |
| 9 | (at your option) any later version. |
| 10 | |
| 11 | This program is distributed in the hope that it will be useful, |
| 12 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 14 | GNU General Public License for more details. |
| 15 | |
| 16 | You should have received a copy of the GNU General Public License |
| 17 | along with this program; if not, write to the Free Software |
| 18 | Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. */ |
| 19 | |
| 20 | #include "bfd.h" |
| 21 | #include "sysdep.h" |
| 22 | #include "libbfd.h" |
| 23 | #include "elf-bfd.h" |
| 24 | #include "elf/frv.h" |
| 25 | #include "elf/dwarf2.h" |
| 26 | #include "hashtab.h" |
| 27 | |
| 28 | /* Forward declarations. */ |
| 29 | static bfd_reloc_status_type elf32_frv_relocate_lo16 |
| 30 | PARAMS ((bfd *, Elf_Internal_Rela *, bfd_byte *, bfd_vma)); |
| 31 | static bfd_reloc_status_type elf32_frv_relocate_hi16 |
| 32 | PARAMS ((bfd *, Elf_Internal_Rela *, bfd_byte *, bfd_vma)); |
| 33 | static bfd_reloc_status_type elf32_frv_relocate_label24 |
| 34 | PARAMS ((bfd *, asection *, Elf_Internal_Rela *, bfd_byte *, bfd_vma)); |
| 35 | static bfd_reloc_status_type elf32_frv_relocate_gprel12 |
| 36 | PARAMS ((struct bfd_link_info *, bfd *, asection *, Elf_Internal_Rela *, |
| 37 | bfd_byte *, bfd_vma)); |
| 38 | static bfd_reloc_status_type elf32_frv_relocate_gprelu12 |
| 39 | PARAMS ((struct bfd_link_info *, bfd *, asection *, Elf_Internal_Rela *, |
| 40 | bfd_byte *, bfd_vma)); |
| 41 | static bfd_reloc_status_type elf32_frv_relocate_gprello |
| 42 | PARAMS ((struct bfd_link_info *, bfd *, asection *, Elf_Internal_Rela *, |
| 43 | bfd_byte *, bfd_vma)); |
| 44 | static bfd_reloc_status_type elf32_frv_relocate_gprelhi |
| 45 | PARAMS ((struct bfd_link_info *, bfd *, asection *, Elf_Internal_Rela *, |
| 46 | bfd_byte *, bfd_vma)); |
| 47 | static reloc_howto_type *frv_reloc_type_lookup |
| 48 | PARAMS ((bfd *, bfd_reloc_code_real_type)); |
| 49 | static void frv_info_to_howto_rela |
| 50 | PARAMS ((bfd *, arelent *, Elf_Internal_Rela *)); |
| 51 | static bfd_boolean elf32_frv_relocate_section |
| 52 | PARAMS ((bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *, |
| 53 | Elf_Internal_Rela *, Elf_Internal_Sym *, asection **)); |
| 54 | static bfd_boolean elf32_frv_add_symbol_hook |
| 55 | PARAMS (( bfd *, struct bfd_link_info *, Elf_Internal_Sym *, |
| 56 | const char **, flagword *, asection **, bfd_vma *)); |
| 57 | static bfd_reloc_status_type frv_final_link_relocate |
| 58 | PARAMS ((reloc_howto_type *, bfd *, asection *, bfd_byte *, |
| 59 | Elf_Internal_Rela *, bfd_vma)); |
| 60 | static bfd_boolean elf32_frv_check_relocs |
| 61 | PARAMS ((bfd *, struct bfd_link_info *, asection *, |
| 62 | const Elf_Internal_Rela *)); |
| 63 | static int elf32_frv_machine |
| 64 | PARAMS ((bfd *)); |
| 65 | static bfd_boolean elf32_frv_object_p |
| 66 | PARAMS ((bfd *)); |
| 67 | static bfd_boolean frv_elf_set_private_flags |
| 68 | PARAMS ((bfd *, flagword)); |
| 69 | static bfd_boolean frv_elf_copy_private_bfd_data |
| 70 | PARAMS ((bfd *, bfd *)); |
| 71 | static bfd_boolean frv_elf_merge_private_bfd_data |
| 72 | PARAMS ((bfd *, bfd *)); |
| 73 | static bfd_boolean frv_elf_print_private_bfd_data |
| 74 | PARAMS ((bfd *, PTR)); |
| 75 | static bfd_boolean elf32_frv_grok_prstatus (bfd * abfd, |
| 76 | Elf_Internal_Note * note); |
| 77 | static bfd_boolean elf32_frv_grok_psinfo (bfd * abfd, |
| 78 | Elf_Internal_Note * note); |
| 79 | |
| 80 | static reloc_howto_type elf32_frv_howto_table [] = |
| 81 | { |
| 82 | /* This reloc does nothing. */ |
| 83 | HOWTO (R_FRV_NONE, /* type */ |
| 84 | 0, /* rightshift */ |
| 85 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 86 | 32, /* bitsize */ |
| 87 | FALSE, /* pc_relative */ |
| 88 | 0, /* bitpos */ |
| 89 | complain_overflow_bitfield, /* complain_on_overflow */ |
| 90 | bfd_elf_generic_reloc, /* special_function */ |
| 91 | "R_FRV_NONE", /* name */ |
| 92 | FALSE, /* partial_inplace */ |
| 93 | 0, /* src_mask */ |
| 94 | 0, /* dst_mask */ |
| 95 | FALSE), /* pcrel_offset */ |
| 96 | |
| 97 | /* A 32 bit absolute relocation. */ |
| 98 | HOWTO (R_FRV_32, /* type */ |
| 99 | 0, /* rightshift */ |
| 100 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 101 | 32, /* bitsize */ |
| 102 | FALSE, /* pc_relative */ |
| 103 | 0, /* bitpos */ |
| 104 | complain_overflow_bitfield, /* complain_on_overflow */ |
| 105 | bfd_elf_generic_reloc, /* special_function */ |
| 106 | "R_FRV_32", /* name */ |
| 107 | FALSE, /* partial_inplace */ |
| 108 | 0xffffffff, /* src_mask */ |
| 109 | 0xffffffff, /* dst_mask */ |
| 110 | FALSE), /* pcrel_offset */ |
| 111 | |
| 112 | /* A 16 bit pc-relative relocation. */ |
| 113 | HOWTO (R_FRV_LABEL16, /* type */ |
| 114 | 2, /* rightshift */ |
| 115 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 116 | 16, /* bitsize */ |
| 117 | TRUE, /* pc_relative */ |
| 118 | 0, /* bitpos */ |
| 119 | complain_overflow_signed, /* complain_on_overflow */ |
| 120 | bfd_elf_generic_reloc, /* special_function */ |
| 121 | "R_FRV_LABEL16", /* name */ |
| 122 | FALSE, /* partial_inplace */ |
| 123 | 0xffff, /* src_mask */ |
| 124 | 0xffff, /* dst_mask */ |
| 125 | TRUE), /* pcrel_offset */ |
| 126 | |
| 127 | /* A 24-bit pc-relative relocation. */ |
| 128 | HOWTO (R_FRV_LABEL24, /* type */ |
| 129 | 2, /* rightshift */ |
| 130 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 131 | 26, /* bitsize */ |
| 132 | TRUE, /* pc_relative */ |
| 133 | 0, /* bitpos */ |
| 134 | complain_overflow_bitfield, /* complain_on_overflow */ |
| 135 | bfd_elf_generic_reloc, /* special_function */ |
| 136 | "R_FRV_LABEL24", /* name */ |
| 137 | FALSE, /* partial_inplace */ |
| 138 | 0x7e03ffff, /* src_mask */ |
| 139 | 0x7e03ffff, /* dst_mask */ |
| 140 | TRUE), /* pcrel_offset */ |
| 141 | |
| 142 | HOWTO (R_FRV_LO16, /* type */ |
| 143 | 0, /* rightshift */ |
| 144 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 145 | 16, /* bitsize */ |
| 146 | FALSE, /* pc_relative */ |
| 147 | 0, /* bitpos */ |
| 148 | complain_overflow_dont, /* complain_on_overflow */ |
| 149 | bfd_elf_generic_reloc, /* special_function */ |
| 150 | "R_FRV_LO16", /* name */ |
| 151 | FALSE, /* partial_inplace */ |
| 152 | 0xffff, /* src_mask */ |
| 153 | 0xffff, /* dst_mask */ |
| 154 | FALSE), /* pcrel_offset */ |
| 155 | |
| 156 | HOWTO (R_FRV_HI16, /* type */ |
| 157 | 0, /* rightshift */ |
| 158 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 159 | 16, /* bitsize */ |
| 160 | FALSE, /* pc_relative */ |
| 161 | 0, /* bitpos */ |
| 162 | complain_overflow_dont, /* complain_on_overflow */ |
| 163 | bfd_elf_generic_reloc, /* special_function */ |
| 164 | "R_FRV_HI16", /* name */ |
| 165 | FALSE, /* partial_inplace */ |
| 166 | 0xffff, /* src_mask */ |
| 167 | 0xffff, /* dst_mask */ |
| 168 | FALSE), /* pcrel_offset */ |
| 169 | |
| 170 | HOWTO (R_FRV_GPREL12, /* type */ |
| 171 | 0, /* rightshift */ |
| 172 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 173 | 12, /* bitsize */ |
| 174 | FALSE, /* pc_relative */ |
| 175 | 0, /* bitpos */ |
| 176 | complain_overflow_dont, /* complain_on_overflow */ |
| 177 | bfd_elf_generic_reloc, /* special_function */ |
| 178 | "R_FRV_GPREL12", /* name */ |
| 179 | FALSE, /* partial_inplace */ |
| 180 | 0xfff, /* src_mask */ |
| 181 | 0xfff, /* dst_mask */ |
| 182 | FALSE), /* pcrel_offset */ |
| 183 | |
| 184 | HOWTO (R_FRV_GPRELU12, /* type */ |
| 185 | 0, /* rightshift */ |
| 186 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 187 | 12, /* bitsize */ |
| 188 | FALSE, /* pc_relative */ |
| 189 | 0, /* bitpos */ |
| 190 | complain_overflow_dont, /* complain_on_overflow */ |
| 191 | bfd_elf_generic_reloc, /* special_function */ |
| 192 | "R_FRV_GPRELU12", /* name */ |
| 193 | FALSE, /* partial_inplace */ |
| 194 | 0xfff, /* src_mask */ |
| 195 | 0x3f03f, /* dst_mask */ |
| 196 | FALSE), /* pcrel_offset */ |
| 197 | |
| 198 | HOWTO (R_FRV_GPREL32, /* type */ |
| 199 | 0, /* rightshift */ |
| 200 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 201 | 32, /* bitsize */ |
| 202 | FALSE, /* pc_relative */ |
| 203 | 0, /* bitpos */ |
| 204 | complain_overflow_dont, /* complain_on_overflow */ |
| 205 | bfd_elf_generic_reloc, /* special_function */ |
| 206 | "R_FRV_GPREL32", /* name */ |
| 207 | FALSE, /* partial_inplace */ |
| 208 | 0xffffffff, /* src_mask */ |
| 209 | 0xffffffff, /* dst_mask */ |
| 210 | FALSE), /* pcrel_offset */ |
| 211 | |
| 212 | HOWTO (R_FRV_GPRELHI, /* type */ |
| 213 | 0, /* rightshift */ |
| 214 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 215 | 16, /* bitsize */ |
| 216 | FALSE, /* pc_relative */ |
| 217 | 0, /* bitpos */ |
| 218 | complain_overflow_dont, /* complain_on_overflow */ |
| 219 | bfd_elf_generic_reloc, /* special_function */ |
| 220 | "R_FRV_GPRELHI", /* name */ |
| 221 | FALSE, /* partial_inplace */ |
| 222 | 0xffff, /* src_mask */ |
| 223 | 0xffff, /* dst_mask */ |
| 224 | FALSE), /* pcrel_offset */ |
| 225 | |
| 226 | HOWTO (R_FRV_GPRELLO, /* type */ |
| 227 | 0, /* rightshift */ |
| 228 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 229 | 16, /* bitsize */ |
| 230 | FALSE, /* pc_relative */ |
| 231 | 0, /* bitpos */ |
| 232 | complain_overflow_dont, /* complain_on_overflow */ |
| 233 | bfd_elf_generic_reloc, /* special_function */ |
| 234 | "R_FRV_GPRELLO", /* name */ |
| 235 | FALSE, /* partial_inplace */ |
| 236 | 0xffff, /* src_mask */ |
| 237 | 0xffff, /* dst_mask */ |
| 238 | FALSE), /* pcrel_offset */ |
| 239 | |
| 240 | /* A 12-bit signed operand with the GOT offset for the address of |
| 241 | the symbol. */ |
| 242 | HOWTO (R_FRV_GOT12, /* type */ |
| 243 | 0, /* rightshift */ |
| 244 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 245 | 12, /* bitsize */ |
| 246 | FALSE, /* pc_relative */ |
| 247 | 0, /* bitpos */ |
| 248 | complain_overflow_signed, /* complain_on_overflow */ |
| 249 | bfd_elf_generic_reloc, /* special_function */ |
| 250 | "R_FRV_GOT12", /* name */ |
| 251 | FALSE, /* partial_inplace */ |
| 252 | 0xfff, /* src_mask */ |
| 253 | 0xfff, /* dst_mask */ |
| 254 | FALSE), /* pcrel_offset */ |
| 255 | |
| 256 | /* The upper 16 bits of the GOT offset for the address of the |
| 257 | symbol. */ |
| 258 | HOWTO (R_FRV_GOTHI, /* type */ |
| 259 | 0, /* rightshift */ |
| 260 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 261 | 16, /* bitsize */ |
| 262 | FALSE, /* pc_relative */ |
| 263 | 0, /* bitpos */ |
| 264 | complain_overflow_dont, /* complain_on_overflow */ |
| 265 | bfd_elf_generic_reloc, /* special_function */ |
| 266 | "R_FRV_GOTHI", /* name */ |
| 267 | FALSE, /* partial_inplace */ |
| 268 | 0xffff, /* src_mask */ |
| 269 | 0xffff, /* dst_mask */ |
| 270 | FALSE), /* pcrel_offset */ |
| 271 | |
| 272 | /* The lower 16 bits of the GOT offset for the address of the |
| 273 | symbol. */ |
| 274 | HOWTO (R_FRV_GOTLO, /* type */ |
| 275 | 0, /* rightshift */ |
| 276 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 277 | 16, /* bitsize */ |
| 278 | FALSE, /* pc_relative */ |
| 279 | 0, /* bitpos */ |
| 280 | complain_overflow_dont, /* complain_on_overflow */ |
| 281 | bfd_elf_generic_reloc, /* special_function */ |
| 282 | "R_FRV_GOTLO", /* name */ |
| 283 | FALSE, /* partial_inplace */ |
| 284 | 0xffff, /* src_mask */ |
| 285 | 0xffff, /* dst_mask */ |
| 286 | FALSE), /* pcrel_offset */ |
| 287 | |
| 288 | /* The 32-bit address of the canonical descriptor of a function. */ |
| 289 | HOWTO (R_FRV_FUNCDESC, /* type */ |
| 290 | 0, /* rightshift */ |
| 291 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 292 | 32, /* bitsize */ |
| 293 | FALSE, /* pc_relative */ |
| 294 | 0, /* bitpos */ |
| 295 | complain_overflow_bitfield, /* complain_on_overflow */ |
| 296 | bfd_elf_generic_reloc, /* special_function */ |
| 297 | "R_FRV_FUNCDESC", /* name */ |
| 298 | FALSE, /* partial_inplace */ |
| 299 | 0xffffffff, /* src_mask */ |
| 300 | 0xffffffff, /* dst_mask */ |
| 301 | FALSE), /* pcrel_offset */ |
| 302 | |
| 303 | /* A 12-bit signed operand with the GOT offset for the address of |
| 304 | canonical descriptor of a function. */ |
| 305 | HOWTO (R_FRV_FUNCDESC_GOT12, /* type */ |
| 306 | 0, /* rightshift */ |
| 307 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 308 | 12, /* bitsize */ |
| 309 | FALSE, /* pc_relative */ |
| 310 | 0, /* bitpos */ |
| 311 | complain_overflow_signed, /* complain_on_overflow */ |
| 312 | bfd_elf_generic_reloc, /* special_function */ |
| 313 | "R_FRV_FUNCDESC_GOT12", /* name */ |
| 314 | FALSE, /* partial_inplace */ |
| 315 | 0xfff, /* src_mask */ |
| 316 | 0xfff, /* dst_mask */ |
| 317 | FALSE), /* pcrel_offset */ |
| 318 | |
| 319 | /* The upper 16 bits of the GOT offset for the address of the |
| 320 | canonical descriptor of a function. */ |
| 321 | HOWTO (R_FRV_FUNCDESC_GOTHI, /* type */ |
| 322 | 0, /* rightshift */ |
| 323 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 324 | 16, /* bitsize */ |
| 325 | FALSE, /* pc_relative */ |
| 326 | 0, /* bitpos */ |
| 327 | complain_overflow_dont, /* complain_on_overflow */ |
| 328 | bfd_elf_generic_reloc, /* special_function */ |
| 329 | "R_FRV_FUNCDESC_GOTHI", /* name */ |
| 330 | FALSE, /* partial_inplace */ |
| 331 | 0xffff, /* src_mask */ |
| 332 | 0xffff, /* dst_mask */ |
| 333 | FALSE), /* pcrel_offset */ |
| 334 | |
| 335 | /* The lower 16 bits of the GOT offset for the address of the |
| 336 | canonical descriptor of a function. */ |
| 337 | HOWTO (R_FRV_FUNCDESC_GOTLO, /* type */ |
| 338 | 0, /* rightshift */ |
| 339 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 340 | 16, /* bitsize */ |
| 341 | FALSE, /* pc_relative */ |
| 342 | 0, /* bitpos */ |
| 343 | complain_overflow_dont, /* complain_on_overflow */ |
| 344 | bfd_elf_generic_reloc, /* special_function */ |
| 345 | "R_FRV_FUNCDESC_GOTLO", /* name */ |
| 346 | FALSE, /* partial_inplace */ |
| 347 | 0xffff, /* src_mask */ |
| 348 | 0xffff, /* dst_mask */ |
| 349 | FALSE), /* pcrel_offset */ |
| 350 | |
| 351 | /* The 64-bit descriptor of a function. */ |
| 352 | HOWTO (R_FRV_FUNCDESC_VALUE, /* type */ |
| 353 | 0, /* rightshift */ |
| 354 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 355 | 64, /* bitsize */ |
| 356 | FALSE, /* pc_relative */ |
| 357 | 0, /* bitpos */ |
| 358 | complain_overflow_bitfield, /* complain_on_overflow */ |
| 359 | bfd_elf_generic_reloc, /* special_function */ |
| 360 | "R_FRV_FUNCDESC_VALUE", /* name */ |
| 361 | FALSE, /* partial_inplace */ |
| 362 | 0xffffffff, /* src_mask */ |
| 363 | 0xffffffff, /* dst_mask */ |
| 364 | FALSE), /* pcrel_offset */ |
| 365 | |
| 366 | /* A 12-bit signed operand with the GOT offset for the address of |
| 367 | canonical descriptor of a function. */ |
| 368 | HOWTO (R_FRV_FUNCDESC_GOTOFF12, /* type */ |
| 369 | 0, /* rightshift */ |
| 370 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 371 | 12, /* bitsize */ |
| 372 | FALSE, /* pc_relative */ |
| 373 | 0, /* bitpos */ |
| 374 | complain_overflow_signed, /* complain_on_overflow */ |
| 375 | bfd_elf_generic_reloc, /* special_function */ |
| 376 | "R_FRV_FUNCDESC_GOTOFF12", /* name */ |
| 377 | FALSE, /* partial_inplace */ |
| 378 | 0xfff, /* src_mask */ |
| 379 | 0xfff, /* dst_mask */ |
| 380 | FALSE), /* pcrel_offset */ |
| 381 | |
| 382 | /* The upper 16 bits of the GOT offset for the address of the |
| 383 | canonical descriptor of a function. */ |
| 384 | HOWTO (R_FRV_FUNCDESC_GOTOFFHI, /* type */ |
| 385 | 0, /* rightshift */ |
| 386 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 387 | 16, /* bitsize */ |
| 388 | FALSE, /* pc_relative */ |
| 389 | 0, /* bitpos */ |
| 390 | complain_overflow_dont, /* complain_on_overflow */ |
| 391 | bfd_elf_generic_reloc, /* special_function */ |
| 392 | "R_FRV_FUNCDESC_GOTOFFHI", /* name */ |
| 393 | FALSE, /* partial_inplace */ |
| 394 | 0xffff, /* src_mask */ |
| 395 | 0xffff, /* dst_mask */ |
| 396 | FALSE), /* pcrel_offset */ |
| 397 | |
| 398 | /* The lower 16 bits of the GOT offset for the address of the |
| 399 | canonical descriptor of a function. */ |
| 400 | HOWTO (R_FRV_FUNCDESC_GOTOFFLO, /* type */ |
| 401 | 0, /* rightshift */ |
| 402 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 403 | 16, /* bitsize */ |
| 404 | FALSE, /* pc_relative */ |
| 405 | 0, /* bitpos */ |
| 406 | complain_overflow_dont, /* complain_on_overflow */ |
| 407 | bfd_elf_generic_reloc, /* special_function */ |
| 408 | "R_FRV_FUNCDESC_GOTOFFLO", /* name */ |
| 409 | FALSE, /* partial_inplace */ |
| 410 | 0xffff, /* src_mask */ |
| 411 | 0xffff, /* dst_mask */ |
| 412 | FALSE), /* pcrel_offset */ |
| 413 | |
| 414 | /* A 12-bit signed operand with the GOT offset for the address of |
| 415 | the symbol. */ |
| 416 | HOWTO (R_FRV_GOTOFF12, /* type */ |
| 417 | 0, /* rightshift */ |
| 418 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 419 | 12, /* bitsize */ |
| 420 | FALSE, /* pc_relative */ |
| 421 | 0, /* bitpos */ |
| 422 | complain_overflow_signed, /* complain_on_overflow */ |
| 423 | bfd_elf_generic_reloc, /* special_function */ |
| 424 | "R_FRV_GOTOFF12", /* name */ |
| 425 | FALSE, /* partial_inplace */ |
| 426 | 0xfff, /* src_mask */ |
| 427 | 0xfff, /* dst_mask */ |
| 428 | FALSE), /* pcrel_offset */ |
| 429 | |
| 430 | /* The upper 16 bits of the GOT offset for the address of the |
| 431 | symbol. */ |
| 432 | HOWTO (R_FRV_GOTOFFHI, /* type */ |
| 433 | 0, /* rightshift */ |
| 434 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 435 | 16, /* bitsize */ |
| 436 | FALSE, /* pc_relative */ |
| 437 | 0, /* bitpos */ |
| 438 | complain_overflow_dont, /* complain_on_overflow */ |
| 439 | bfd_elf_generic_reloc, /* special_function */ |
| 440 | "R_FRV_GOTOFFHI", /* name */ |
| 441 | FALSE, /* partial_inplace */ |
| 442 | 0xffff, /* src_mask */ |
| 443 | 0xffff, /* dst_mask */ |
| 444 | FALSE), /* pcrel_offset */ |
| 445 | |
| 446 | /* The lower 16 bits of the GOT offset for the address of the |
| 447 | symbol. */ |
| 448 | HOWTO (R_FRV_GOTOFFLO, /* type */ |
| 449 | 0, /* rightshift */ |
| 450 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 451 | 16, /* bitsize */ |
| 452 | FALSE, /* pc_relative */ |
| 453 | 0, /* bitpos */ |
| 454 | complain_overflow_dont, /* complain_on_overflow */ |
| 455 | bfd_elf_generic_reloc, /* special_function */ |
| 456 | "R_FRV_GOTOFFLO", /* name */ |
| 457 | FALSE, /* partial_inplace */ |
| 458 | 0xffff, /* src_mask */ |
| 459 | 0xffff, /* dst_mask */ |
| 460 | FALSE), /* pcrel_offset */ |
| 461 | |
| 462 | /* A 24-bit pc-relative relocation referencing the TLS PLT entry for |
| 463 | a thread-local symbol. If the symbol number is 0, it refers to |
| 464 | the module. */ |
| 465 | HOWTO (R_FRV_GETTLSOFF, /* type */ |
| 466 | 2, /* rightshift */ |
| 467 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 468 | 26, /* bitsize */ |
| 469 | TRUE, /* pc_relative */ |
| 470 | 0, /* bitpos */ |
| 471 | complain_overflow_bitfield, /* complain_on_overflow */ |
| 472 | bfd_elf_generic_reloc, /* special_function */ |
| 473 | "R_FRV_GETTLSOFF", /* name */ |
| 474 | FALSE, /* partial_inplace */ |
| 475 | 0x7e03ffff, /* src_mask */ |
| 476 | 0x7e03ffff, /* dst_mask */ |
| 477 | TRUE), /* pcrel_offset */ |
| 478 | |
| 479 | /* A 64-bit TLS descriptor for a symbol. This relocation is only |
| 480 | valid as a REL, dynamic relocation. */ |
| 481 | HOWTO (R_FRV_TLSDESC_VALUE, /* type */ |
| 482 | 0, /* rightshift */ |
| 483 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 484 | 64, /* bitsize */ |
| 485 | FALSE, /* pc_relative */ |
| 486 | 0, /* bitpos */ |
| 487 | complain_overflow_bitfield, /* complain_on_overflow */ |
| 488 | bfd_elf_generic_reloc, /* special_function */ |
| 489 | "R_FRV_TLSDESC_VALUE", /* name */ |
| 490 | FALSE, /* partial_inplace */ |
| 491 | 0xffffffff, /* src_mask */ |
| 492 | 0xffffffff, /* dst_mask */ |
| 493 | FALSE), /* pcrel_offset */ |
| 494 | |
| 495 | /* A 12-bit signed operand with the GOT offset for the TLS |
| 496 | descriptor of the symbol. */ |
| 497 | HOWTO (R_FRV_GOTTLSDESC12, /* type */ |
| 498 | 0, /* rightshift */ |
| 499 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 500 | 12, /* bitsize */ |
| 501 | FALSE, /* pc_relative */ |
| 502 | 0, /* bitpos */ |
| 503 | complain_overflow_signed, /* complain_on_overflow */ |
| 504 | bfd_elf_generic_reloc, /* special_function */ |
| 505 | "R_FRV_GOTTLSDESC12", /* name */ |
| 506 | FALSE, /* partial_inplace */ |
| 507 | 0xfff, /* src_mask */ |
| 508 | 0xfff, /* dst_mask */ |
| 509 | FALSE), /* pcrel_offset */ |
| 510 | |
| 511 | /* The upper 16 bits of the GOT offset for the TLS descriptor of the |
| 512 | symbol. */ |
| 513 | HOWTO (R_FRV_GOTTLSDESCHI, /* type */ |
| 514 | 0, /* rightshift */ |
| 515 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 516 | 16, /* bitsize */ |
| 517 | FALSE, /* pc_relative */ |
| 518 | 0, /* bitpos */ |
| 519 | complain_overflow_dont, /* complain_on_overflow */ |
| 520 | bfd_elf_generic_reloc, /* special_function */ |
| 521 | "R_FRV_GOTTLSDESCHI", /* name */ |
| 522 | FALSE, /* partial_inplace */ |
| 523 | 0xffff, /* src_mask */ |
| 524 | 0xffff, /* dst_mask */ |
| 525 | FALSE), /* pcrel_offset */ |
| 526 | |
| 527 | /* The lower 16 bits of the GOT offset for the TLS descriptor of the |
| 528 | symbol. */ |
| 529 | HOWTO (R_FRV_GOTTLSDESCLO, /* type */ |
| 530 | 0, /* rightshift */ |
| 531 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 532 | 16, /* bitsize */ |
| 533 | FALSE, /* pc_relative */ |
| 534 | 0, /* bitpos */ |
| 535 | complain_overflow_dont, /* complain_on_overflow */ |
| 536 | bfd_elf_generic_reloc, /* special_function */ |
| 537 | "R_FRV_GOTTLSDESCLO", /* name */ |
| 538 | FALSE, /* partial_inplace */ |
| 539 | 0xffff, /* src_mask */ |
| 540 | 0xffff, /* dst_mask */ |
| 541 | FALSE), /* pcrel_offset */ |
| 542 | |
| 543 | /* A 12-bit signed operand with the offset from the module base |
| 544 | address to the thread-local symbol address. */ |
| 545 | HOWTO (R_FRV_TLSMOFF12, /* type */ |
| 546 | 0, /* rightshift */ |
| 547 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 548 | 12, /* bitsize */ |
| 549 | FALSE, /* pc_relative */ |
| 550 | 0, /* bitpos */ |
| 551 | complain_overflow_signed, /* complain_on_overflow */ |
| 552 | bfd_elf_generic_reloc, /* special_function */ |
| 553 | "R_FRV_TLSMOFF12", /* name */ |
| 554 | FALSE, /* partial_inplace */ |
| 555 | 0xfff, /* src_mask */ |
| 556 | 0xfff, /* dst_mask */ |
| 557 | FALSE), /* pcrel_offset */ |
| 558 | |
| 559 | /* The upper 16 bits of the offset from the module base address to |
| 560 | the thread-local symbol address. */ |
| 561 | HOWTO (R_FRV_TLSMOFFHI, /* type */ |
| 562 | 0, /* rightshift */ |
| 563 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 564 | 16, /* bitsize */ |
| 565 | FALSE, /* pc_relative */ |
| 566 | 0, /* bitpos */ |
| 567 | complain_overflow_dont, /* complain_on_overflow */ |
| 568 | bfd_elf_generic_reloc, /* special_function */ |
| 569 | "R_FRV_TLSMOFFHI", /* name */ |
| 570 | FALSE, /* partial_inplace */ |
| 571 | 0xffff, /* src_mask */ |
| 572 | 0xffff, /* dst_mask */ |
| 573 | FALSE), /* pcrel_offset */ |
| 574 | |
| 575 | /* The lower 16 bits of the offset from the module base address to |
| 576 | the thread-local symbol address. */ |
| 577 | HOWTO (R_FRV_TLSMOFFLO, /* type */ |
| 578 | 0, /* rightshift */ |
| 579 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 580 | 16, /* bitsize */ |
| 581 | FALSE, /* pc_relative */ |
| 582 | 0, /* bitpos */ |
| 583 | complain_overflow_dont, /* complain_on_overflow */ |
| 584 | bfd_elf_generic_reloc, /* special_function */ |
| 585 | "R_FRV_TLSMOFFLO", /* name */ |
| 586 | FALSE, /* partial_inplace */ |
| 587 | 0xffff, /* src_mask */ |
| 588 | 0xffff, /* dst_mask */ |
| 589 | FALSE), /* pcrel_offset */ |
| 590 | |
| 591 | /* A 12-bit signed operand with the GOT offset for the TLSOFF entry |
| 592 | for a symbol. */ |
| 593 | HOWTO (R_FRV_GOTTLSOFF12, /* type */ |
| 594 | 0, /* rightshift */ |
| 595 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 596 | 12, /* bitsize */ |
| 597 | FALSE, /* pc_relative */ |
| 598 | 0, /* bitpos */ |
| 599 | complain_overflow_signed, /* complain_on_overflow */ |
| 600 | bfd_elf_generic_reloc, /* special_function */ |
| 601 | "R_FRV_GOTTLSOFF12", /* name */ |
| 602 | FALSE, /* partial_inplace */ |
| 603 | 0xfff, /* src_mask */ |
| 604 | 0xfff, /* dst_mask */ |
| 605 | FALSE), /* pcrel_offset */ |
| 606 | |
| 607 | /* The upper 16 bits of the GOT offset for the TLSOFF entry for a |
| 608 | symbol. */ |
| 609 | HOWTO (R_FRV_GOTTLSOFFHI, /* type */ |
| 610 | 0, /* rightshift */ |
| 611 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 612 | 16, /* bitsize */ |
| 613 | FALSE, /* pc_relative */ |
| 614 | 0, /* bitpos */ |
| 615 | complain_overflow_dont, /* complain_on_overflow */ |
| 616 | bfd_elf_generic_reloc, /* special_function */ |
| 617 | "R_FRV_GOTTLSOFFHI", /* name */ |
| 618 | FALSE, /* partial_inplace */ |
| 619 | 0xffff, /* src_mask */ |
| 620 | 0xffff, /* dst_mask */ |
| 621 | FALSE), /* pcrel_offset */ |
| 622 | |
| 623 | /* The lower 16 bits of the GOT offset for the TLSOFF entry for a |
| 624 | symbol. */ |
| 625 | HOWTO (R_FRV_GOTTLSOFFLO, /* type */ |
| 626 | 0, /* rightshift */ |
| 627 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 628 | 16, /* bitsize */ |
| 629 | FALSE, /* pc_relative */ |
| 630 | 0, /* bitpos */ |
| 631 | complain_overflow_dont, /* complain_on_overflow */ |
| 632 | bfd_elf_generic_reloc, /* special_function */ |
| 633 | "R_FRV_GOTTLSOFFLO", /* name */ |
| 634 | FALSE, /* partial_inplace */ |
| 635 | 0xffff, /* src_mask */ |
| 636 | 0xffff, /* dst_mask */ |
| 637 | FALSE), /* pcrel_offset */ |
| 638 | |
| 639 | /* The 32-bit offset from the thread pointer (not the module base |
| 640 | address) to a thread-local symbol. */ |
| 641 | HOWTO (R_FRV_TLSOFF, /* type */ |
| 642 | 0, /* rightshift */ |
| 643 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 644 | 32, /* bitsize */ |
| 645 | FALSE, /* pc_relative */ |
| 646 | 0, /* bitpos */ |
| 647 | complain_overflow_dont, /* complain_on_overflow */ |
| 648 | bfd_elf_generic_reloc, /* special_function */ |
| 649 | "R_FRV_TLSOFF", /* name */ |
| 650 | FALSE, /* partial_inplace */ |
| 651 | 0xffffffff, /* src_mask */ |
| 652 | 0xffffffff, /* dst_mask */ |
| 653 | FALSE), /* pcrel_offset */ |
| 654 | |
| 655 | /* An annotation for linker relaxation, that denotes the |
| 656 | symbol+addend whose TLS descriptor is referenced by the sum of |
| 657 | the two input registers of an ldd instruction. */ |
| 658 | HOWTO (R_FRV_TLSDESC_RELAX, /* type */ |
| 659 | 0, /* rightshift */ |
| 660 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 661 | 0, /* bitsize */ |
| 662 | FALSE, /* pc_relative */ |
| 663 | 0, /* bitpos */ |
| 664 | complain_overflow_dont, /* complain_on_overflow */ |
| 665 | bfd_elf_generic_reloc, /* special_function */ |
| 666 | "R_FRV_TLSDESC_RELAX", /* name */ |
| 667 | FALSE, /* partial_inplace */ |
| 668 | 0, /* src_mask */ |
| 669 | 0, /* dst_mask */ |
| 670 | FALSE), /* pcrel_offset */ |
| 671 | |
| 672 | /* An annotation for linker relaxation, that denotes the |
| 673 | symbol+addend whose TLS resolver entry point is given by the sum |
| 674 | of the two register operands of an calll instruction. */ |
| 675 | HOWTO (R_FRV_GETTLSOFF_RELAX, /* type */ |
| 676 | 0, /* rightshift */ |
| 677 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 678 | 0, /* bitsize */ |
| 679 | FALSE, /* pc_relative */ |
| 680 | 0, /* bitpos */ |
| 681 | complain_overflow_dont, /* complain_on_overflow */ |
| 682 | bfd_elf_generic_reloc, /* special_function */ |
| 683 | "R_FRV_GETTLSOFF_RELAX", /* name */ |
| 684 | FALSE, /* partial_inplace */ |
| 685 | 0, /* src_mask */ |
| 686 | 0, /* dst_mask */ |
| 687 | FALSE), /* pcrel_offset */ |
| 688 | |
| 689 | /* An annotation for linker relaxation, that denotes the |
| 690 | symbol+addend whose TLS offset GOT entry is given by the sum of |
| 691 | the two input registers of an ld instruction. */ |
| 692 | HOWTO (R_FRV_TLSOFF_RELAX, /* type */ |
| 693 | 0, /* rightshift */ |
| 694 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 695 | 0, /* bitsize */ |
| 696 | FALSE, /* pc_relative */ |
| 697 | 0, /* bitpos */ |
| 698 | complain_overflow_bitfield, /* complain_on_overflow */ |
| 699 | bfd_elf_generic_reloc, /* special_function */ |
| 700 | "R_FRV_TLSOFF_RELAX", /* name */ |
| 701 | FALSE, /* partial_inplace */ |
| 702 | 0, /* src_mask */ |
| 703 | 0, /* dst_mask */ |
| 704 | FALSE), /* pcrel_offset */ |
| 705 | |
| 706 | /* A 32-bit offset from the module base address to |
| 707 | the thread-local symbol address. */ |
| 708 | HOWTO (R_FRV_TLSMOFF, /* type */ |
| 709 | 0, /* rightshift */ |
| 710 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 711 | 32, /* bitsize */ |
| 712 | FALSE, /* pc_relative */ |
| 713 | 0, /* bitpos */ |
| 714 | complain_overflow_dont, /* complain_on_overflow */ |
| 715 | bfd_elf_generic_reloc, /* special_function */ |
| 716 | "R_FRV_TLSMOFF", /* name */ |
| 717 | FALSE, /* partial_inplace */ |
| 718 | 0xffffffff, /* src_mask */ |
| 719 | 0xffffffff, /* dst_mask */ |
| 720 | FALSE), /* pcrel_offset */ |
| 721 | }; |
| 722 | |
| 723 | /* GNU extension to record C++ vtable hierarchy. */ |
| 724 | static reloc_howto_type elf32_frv_vtinherit_howto = |
| 725 | HOWTO (R_FRV_GNU_VTINHERIT, /* type */ |
| 726 | 0, /* rightshift */ |
| 727 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 728 | 0, /* bitsize */ |
| 729 | FALSE, /* pc_relative */ |
| 730 | 0, /* bitpos */ |
| 731 | complain_overflow_dont, /* complain_on_overflow */ |
| 732 | NULL, /* special_function */ |
| 733 | "R_FRV_GNU_VTINHERIT", /* name */ |
| 734 | FALSE, /* partial_inplace */ |
| 735 | 0, /* src_mask */ |
| 736 | 0, /* dst_mask */ |
| 737 | FALSE); /* pcrel_offset */ |
| 738 | |
| 739 | /* GNU extension to record C++ vtable member usage. */ |
| 740 | static reloc_howto_type elf32_frv_vtentry_howto = |
| 741 | HOWTO (R_FRV_GNU_VTENTRY, /* type */ |
| 742 | 0, /* rightshift */ |
| 743 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 744 | 0, /* bitsize */ |
| 745 | FALSE, /* pc_relative */ |
| 746 | 0, /* bitpos */ |
| 747 | complain_overflow_dont, /* complain_on_overflow */ |
| 748 | _bfd_elf_rel_vtable_reloc_fn, /* special_function */ |
| 749 | "R_FRV_GNU_VTENTRY", /* name */ |
| 750 | FALSE, /* partial_inplace */ |
| 751 | 0, /* src_mask */ |
| 752 | 0, /* dst_mask */ |
| 753 | FALSE); /* pcrel_offset */ |
| 754 | |
| 755 | /* The following 3 relocations are REL. The only difference to the |
| 756 | entries in the table above are that partial_inplace is TRUE. */ |
| 757 | static reloc_howto_type elf32_frv_rel_32_howto = |
| 758 | HOWTO (R_FRV_32, /* type */ |
| 759 | 0, /* rightshift */ |
| 760 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 761 | 32, /* bitsize */ |
| 762 | FALSE, /* pc_relative */ |
| 763 | 0, /* bitpos */ |
| 764 | complain_overflow_bitfield, /* complain_on_overflow */ |
| 765 | bfd_elf_generic_reloc, /* special_function */ |
| 766 | "R_FRV_32", /* name */ |
| 767 | TRUE, /* partial_inplace */ |
| 768 | 0xffffffff, /* src_mask */ |
| 769 | 0xffffffff, /* dst_mask */ |
| 770 | FALSE); /* pcrel_offset */ |
| 771 | |
| 772 | static reloc_howto_type elf32_frv_rel_funcdesc_howto = |
| 773 | HOWTO (R_FRV_FUNCDESC, /* type */ |
| 774 | 0, /* rightshift */ |
| 775 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 776 | 32, /* bitsize */ |
| 777 | FALSE, /* pc_relative */ |
| 778 | 0, /* bitpos */ |
| 779 | complain_overflow_bitfield, /* complain_on_overflow */ |
| 780 | bfd_elf_generic_reloc, /* special_function */ |
| 781 | "R_FRV_FUNCDESC", /* name */ |
| 782 | TRUE, /* partial_inplace */ |
| 783 | 0xffffffff, /* src_mask */ |
| 784 | 0xffffffff, /* dst_mask */ |
| 785 | FALSE); /* pcrel_offset */ |
| 786 | |
| 787 | static reloc_howto_type elf32_frv_rel_funcdesc_value_howto = |
| 788 | HOWTO (R_FRV_FUNCDESC_VALUE, /* type */ |
| 789 | 0, /* rightshift */ |
| 790 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 791 | 64, /* bitsize */ |
| 792 | FALSE, /* pc_relative */ |
| 793 | 0, /* bitpos */ |
| 794 | complain_overflow_bitfield, /* complain_on_overflow */ |
| 795 | bfd_elf_generic_reloc, /* special_function */ |
| 796 | "R_FRV_FUNCDESC_VALUE", /* name */ |
| 797 | TRUE, /* partial_inplace */ |
| 798 | 0xffffffff, /* src_mask */ |
| 799 | 0xffffffff, /* dst_mask */ |
| 800 | FALSE); /* pcrel_offset */ |
| 801 | |
| 802 | static reloc_howto_type elf32_frv_rel_tlsdesc_value_howto = |
| 803 | /* A 64-bit TLS descriptor for a symbol. The first word resolves to |
| 804 | an entry point, and the second resolves to a special argument. |
| 805 | If the symbol turns out to be in static TLS, the entry point is a |
| 806 | return instruction, and the special argument is the TLS offset |
| 807 | for the symbol. If it's in dynamic TLS, the entry point is a TLS |
| 808 | offset resolver, and the special argument is a pointer to a data |
| 809 | structure allocated by the dynamic loader, containing the GOT |
| 810 | address for the offset resolver, the module id, the offset within |
| 811 | the module, and anything else the TLS offset resolver might need |
| 812 | to determine the TLS offset for the symbol in the running |
| 813 | thread. */ |
| 814 | HOWTO (R_FRV_TLSDESC_VALUE, /* type */ |
| 815 | 0, /* rightshift */ |
| 816 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 817 | 64, /* bitsize */ |
| 818 | FALSE, /* pc_relative */ |
| 819 | 0, /* bitpos */ |
| 820 | complain_overflow_bitfield, /* complain_on_overflow */ |
| 821 | bfd_elf_generic_reloc, /* special_function */ |
| 822 | "R_FRV_TLSDESC_VALUE", /* name */ |
| 823 | TRUE, /* partial_inplace */ |
| 824 | 0xffffffff, /* src_mask */ |
| 825 | 0xffffffff, /* dst_mask */ |
| 826 | FALSE); /* pcrel_offset */ |
| 827 | |
| 828 | static reloc_howto_type elf32_frv_rel_tlsoff_howto = |
| 829 | /* The 32-bit offset from the thread pointer (not the module base |
| 830 | address) to a thread-local symbol. */ |
| 831 | HOWTO (R_FRV_TLSOFF, /* type */ |
| 832 | 0, /* rightshift */ |
| 833 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 834 | 32, /* bitsize */ |
| 835 | FALSE, /* pc_relative */ |
| 836 | 0, /* bitpos */ |
| 837 | complain_overflow_bitfield, /* complain_on_overflow */ |
| 838 | bfd_elf_generic_reloc, /* special_function */ |
| 839 | "R_FRV_TLSOFF", /* name */ |
| 840 | TRUE, /* partial_inplace */ |
| 841 | 0xffffffff, /* src_mask */ |
| 842 | 0xffffffff, /* dst_mask */ |
| 843 | FALSE); /* pcrel_offset */ |
| 844 | |
| 845 | |
| 846 | \f |
| 847 | extern const bfd_target bfd_elf32_frvfdpic_vec; |
| 848 | #define IS_FDPIC(bfd) ((bfd)->xvec == &bfd_elf32_frvfdpic_vec) |
| 849 | |
| 850 | /* An extension of the elf hash table data structure, containing some |
| 851 | additional FRV-specific data. */ |
| 852 | struct frvfdpic_elf_link_hash_table |
| 853 | { |
| 854 | struct elf_link_hash_table elf; |
| 855 | |
| 856 | /* A pointer to the .got section. */ |
| 857 | asection *sgot; |
| 858 | /* A pointer to the .rel.got section. */ |
| 859 | asection *sgotrel; |
| 860 | /* A pointer to the .rofixup section. */ |
| 861 | asection *sgotfixup; |
| 862 | /* A pointer to the .plt section. */ |
| 863 | asection *splt; |
| 864 | /* A pointer to the .rel.plt section. */ |
| 865 | asection *spltrel; |
| 866 | /* GOT base offset. */ |
| 867 | bfd_vma got0; |
| 868 | /* Location of the first non-lazy PLT entry, i.e., the number of |
| 869 | bytes taken by lazy PLT entries. If locally-bound TLS |
| 870 | descriptors require a ret instruction, it will be placed at this |
| 871 | offset. */ |
| 872 | bfd_vma plt0; |
| 873 | /* A hash table holding information about which symbols were |
| 874 | referenced with which PIC-related relocations. */ |
| 875 | struct htab *relocs_info; |
| 876 | /* Summary reloc information collected by |
| 877 | _frvfdpic_count_got_plt_entries. */ |
| 878 | struct _frvfdpic_dynamic_got_info *g; |
| 879 | }; |
| 880 | |
| 881 | /* Get the FRV ELF linker hash table from a link_info structure. */ |
| 882 | |
| 883 | #define frvfdpic_hash_table(info) \ |
| 884 | ((struct frvfdpic_elf_link_hash_table *) ((info)->hash)) |
| 885 | |
| 886 | #define frvfdpic_got_section(info) \ |
| 887 | (frvfdpic_hash_table (info)->sgot) |
| 888 | #define frvfdpic_gotrel_section(info) \ |
| 889 | (frvfdpic_hash_table (info)->sgotrel) |
| 890 | #define frvfdpic_gotfixup_section(info) \ |
| 891 | (frvfdpic_hash_table (info)->sgotfixup) |
| 892 | #define frvfdpic_plt_section(info) \ |
| 893 | (frvfdpic_hash_table (info)->splt) |
| 894 | #define frvfdpic_pltrel_section(info) \ |
| 895 | (frvfdpic_hash_table (info)->spltrel) |
| 896 | #define frvfdpic_relocs_info(info) \ |
| 897 | (frvfdpic_hash_table (info)->relocs_info) |
| 898 | #define frvfdpic_got_initial_offset(info) \ |
| 899 | (frvfdpic_hash_table (info)->got0) |
| 900 | #define frvfdpic_plt_initial_offset(info) \ |
| 901 | (frvfdpic_hash_table (info)->plt0) |
| 902 | #define frvfdpic_dynamic_got_plt_info(info) \ |
| 903 | (frvfdpic_hash_table (info)->g) |
| 904 | |
| 905 | /* Currently it's the same, but if some day we have a reason to change |
| 906 | it, we'd better be using a different macro. |
| 907 | |
| 908 | FIXME: if there's any TLS PLT entry that uses local-exec or |
| 909 | initial-exec models, we could use the ret at the end of any of them |
| 910 | instead of adding one more. */ |
| 911 | #define frvfdpic_plt_tls_ret_offset(info) \ |
| 912 | (frvfdpic_plt_initial_offset (info)) |
| 913 | |
| 914 | /* The name of the dynamic interpreter. This is put in the .interp |
| 915 | section. */ |
| 916 | |
| 917 | #define ELF_DYNAMIC_INTERPRETER "/lib/ld.so.1" |
| 918 | |
| 919 | #define DEFAULT_STACK_SIZE 0x20000 |
| 920 | |
| 921 | /* This structure is used to collect the number of entries present in |
| 922 | each addressable range of the got. */ |
| 923 | struct _frvfdpic_dynamic_got_info |
| 924 | { |
| 925 | /* Several bits of information about the current link. */ |
| 926 | struct bfd_link_info *info; |
| 927 | /* Total GOT size needed for GOT entries within the 12-, 16- or 32-bit |
| 928 | ranges. */ |
| 929 | bfd_vma got12, gotlos, gothilo; |
| 930 | /* Total GOT size needed for function descriptor entries within the 12-, |
| 931 | 16- or 32-bit ranges. */ |
| 932 | bfd_vma fd12, fdlos, fdhilo; |
| 933 | /* Total GOT size needed by function descriptor entries referenced |
| 934 | in PLT entries, that would be profitable to place in offsets |
| 935 | close to the PIC register. */ |
| 936 | bfd_vma fdplt; |
| 937 | /* Total PLT size needed by lazy PLT entries. */ |
| 938 | bfd_vma lzplt; |
| 939 | /* Total GOT size needed for TLS descriptor entries within the 12-, |
| 940 | 16- or 32-bit ranges. */ |
| 941 | bfd_vma tlsd12, tlsdlos, tlsdhilo; |
| 942 | /* Total GOT size needed by TLS descriptors referenced in PLT |
| 943 | entries, that would be profitable to place in offers close to the |
| 944 | PIC register. */ |
| 945 | bfd_vma tlsdplt; |
| 946 | /* Total PLT size needed by TLS lazy PLT entries. */ |
| 947 | bfd_vma tlslzplt; |
| 948 | /* Number of relocations carried over from input object files. */ |
| 949 | unsigned long relocs; |
| 950 | /* Number of fixups introduced by relocations in input object files. */ |
| 951 | unsigned long fixups; |
| 952 | /* The number of fixups that reference the ret instruction added to |
| 953 | the PLT for locally-resolved TLS descriptors. */ |
| 954 | unsigned long tls_ret_refs; |
| 955 | }; |
| 956 | |
| 957 | /* This structure is used to assign offsets to got entries, function |
| 958 | descriptors, plt entries and lazy plt entries. */ |
| 959 | |
| 960 | struct _frvfdpic_dynamic_got_plt_info |
| 961 | { |
| 962 | /* Summary information collected with _frvfdpic_count_got_plt_entries. */ |
| 963 | struct _frvfdpic_dynamic_got_info g; |
| 964 | |
| 965 | /* For each addressable range, we record a MAX (positive) and MIN |
| 966 | (negative) value. CUR is used to assign got entries, and it's |
| 967 | incremented from an initial positive value to MAX, then from MIN |
| 968 | to FDCUR (unless FDCUR wraps around first). FDCUR is used to |
| 969 | assign function descriptors, and it's decreased from an initial |
| 970 | non-positive value to MIN, then from MAX down to CUR (unless CUR |
| 971 | wraps around first). All of MIN, MAX, CUR and FDCUR always point |
| 972 | to even words. ODD, if non-zero, indicates an odd word to be |
| 973 | used for the next got entry, otherwise CUR is used and |
| 974 | incremented by a pair of words, wrapping around when it reaches |
| 975 | MAX. FDCUR is decremented (and wrapped) before the next function |
| 976 | descriptor is chosen. FDPLT indicates the number of remaining |
| 977 | slots that can be used for function descriptors used only by PLT |
| 978 | entries. |
| 979 | |
| 980 | TMAX, TMIN and TCUR are used to assign TLS descriptors. TCUR |
| 981 | starts as MAX, and grows up to TMAX, then wraps around to TMIN |
| 982 | and grows up to MIN. TLSDPLT indicates the number of remaining |
| 983 | slots that can be used for TLS descriptors used only by TLS PLT |
| 984 | entries. */ |
| 985 | struct _frvfdpic_dynamic_got_alloc_data |
| 986 | { |
| 987 | bfd_signed_vma max, cur, odd, fdcur, min; |
| 988 | bfd_signed_vma tmax, tcur, tmin; |
| 989 | bfd_vma fdplt, tlsdplt; |
| 990 | } got12, gotlos, gothilo; |
| 991 | }; |
| 992 | |
| 993 | /* Create an FRV ELF linker hash table. */ |
| 994 | |
| 995 | static struct bfd_link_hash_table * |
| 996 | frvfdpic_elf_link_hash_table_create (bfd *abfd) |
| 997 | { |
| 998 | struct frvfdpic_elf_link_hash_table *ret; |
| 999 | bfd_size_type amt = sizeof (struct frvfdpic_elf_link_hash_table); |
| 1000 | |
| 1001 | ret = bfd_zalloc (abfd, amt); |
| 1002 | if (ret == NULL) |
| 1003 | return NULL; |
| 1004 | |
| 1005 | if (!_bfd_elf_link_hash_table_init (&ret->elf, abfd, |
| 1006 | _bfd_elf_link_hash_newfunc, |
| 1007 | sizeof (struct elf_link_hash_entry))) |
| 1008 | { |
| 1009 | free (ret); |
| 1010 | return NULL; |
| 1011 | } |
| 1012 | |
| 1013 | return &ret->elf.root; |
| 1014 | } |
| 1015 | |
| 1016 | /* Decide whether a reference to a symbol can be resolved locally or |
| 1017 | not. If the symbol is protected, we want the local address, but |
| 1018 | its function descriptor must be assigned by the dynamic linker. */ |
| 1019 | #define FRVFDPIC_SYM_LOCAL(INFO, H) \ |
| 1020 | (_bfd_elf_symbol_refs_local_p ((H), (INFO), 1) \ |
| 1021 | || ! elf_hash_table (INFO)->dynamic_sections_created) |
| 1022 | #define FRVFDPIC_FUNCDESC_LOCAL(INFO, H) \ |
| 1023 | ((H)->dynindx == -1 || ! elf_hash_table (INFO)->dynamic_sections_created) |
| 1024 | |
| 1025 | /* This structure collects information on what kind of GOT, PLT or |
| 1026 | function descriptors are required by relocations that reference a |
| 1027 | certain symbol. */ |
| 1028 | struct frvfdpic_relocs_info |
| 1029 | { |
| 1030 | /* The index of the symbol, as stored in the relocation r_info, if |
| 1031 | we have a local symbol; -1 otherwise. */ |
| 1032 | long symndx; |
| 1033 | union |
| 1034 | { |
| 1035 | /* The input bfd in which the symbol is defined, if it's a local |
| 1036 | symbol. */ |
| 1037 | bfd *abfd; |
| 1038 | /* If symndx == -1, the hash table entry corresponding to a global |
| 1039 | symbol (even if it turns out to bind locally, in which case it |
| 1040 | should ideally be replaced with section's symndx + addend). */ |
| 1041 | struct elf_link_hash_entry *h; |
| 1042 | } d; |
| 1043 | /* The addend of the relocation that references the symbol. */ |
| 1044 | bfd_vma addend; |
| 1045 | |
| 1046 | /* The fields above are used to identify an entry. The fields below |
| 1047 | contain information on how an entry is used and, later on, which |
| 1048 | locations it was assigned. */ |
| 1049 | /* The following 3 fields record whether the symbol+addend above was |
| 1050 | ever referenced with a GOT relocation. The 12 suffix indicates a |
| 1051 | GOT12 relocation; los is used for GOTLO relocations that are not |
| 1052 | matched by a GOTHI relocation; hilo is used for GOTLO/GOTHI |
| 1053 | pairs. */ |
| 1054 | unsigned got12:1; |
| 1055 | unsigned gotlos:1; |
| 1056 | unsigned gothilo:1; |
| 1057 | /* Whether a FUNCDESC relocation references symbol+addend. */ |
| 1058 | unsigned fd:1; |
| 1059 | /* Whether a FUNCDESC_GOT relocation references symbol+addend. */ |
| 1060 | unsigned fdgot12:1; |
| 1061 | unsigned fdgotlos:1; |
| 1062 | unsigned fdgothilo:1; |
| 1063 | /* Whether a FUNCDESC_GOTOFF relocation references symbol+addend. */ |
| 1064 | unsigned fdgoff12:1; |
| 1065 | unsigned fdgofflos:1; |
| 1066 | unsigned fdgoffhilo:1; |
| 1067 | /* Whether a GETTLSOFF relocation references symbol+addend. */ |
| 1068 | unsigned tlsplt:1; |
| 1069 | /* FIXME: we should probably add tlspltdesc, tlspltoff and |
| 1070 | tlspltimm, to tell what kind of TLS PLT entry we're generating. |
| 1071 | We might instead just pre-compute flags telling whether the |
| 1072 | object is suitable for local exec, initial exec or general |
| 1073 | dynamic addressing, and use that all over the place. We could |
| 1074 | also try to do a better job of merging TLSOFF and TLSDESC entries |
| 1075 | in main executables, but perhaps we can get rid of TLSDESC |
| 1076 | entirely in them instead. */ |
| 1077 | /* Whether a GOTTLSDESC relocation references symbol+addend. */ |
| 1078 | unsigned tlsdesc12:1; |
| 1079 | unsigned tlsdesclos:1; |
| 1080 | unsigned tlsdeschilo:1; |
| 1081 | /* Whether a GOTTLSOFF relocation references symbol+addend. */ |
| 1082 | unsigned tlsoff12:1; |
| 1083 | unsigned tlsofflos:1; |
| 1084 | unsigned tlsoffhilo:1; |
| 1085 | /* Whether symbol+addend is referenced with GOTOFF12, GOTOFFLO or |
| 1086 | GOTOFFHI relocations. The addend doesn't really matter, since we |
| 1087 | envision that this will only be used to check whether the symbol |
| 1088 | is mapped to the same segment as the got. */ |
| 1089 | unsigned gotoff:1; |
| 1090 | /* Whether symbol+addend is referenced by a LABEL24 relocation. */ |
| 1091 | unsigned call:1; |
| 1092 | /* Whether symbol+addend is referenced by a 32 or FUNCDESC_VALUE |
| 1093 | relocation. */ |
| 1094 | unsigned sym:1; |
| 1095 | /* Whether we need a PLT entry for a symbol. Should be implied by |
| 1096 | something like: |
| 1097 | (call && symndx == -1 && ! FRVFDPIC_SYM_LOCAL (info, d.h)) */ |
| 1098 | unsigned plt:1; |
| 1099 | /* Whether a function descriptor should be created in this link unit |
| 1100 | for symbol+addend. Should be implied by something like: |
| 1101 | (plt || fdgotoff12 || fdgotofflos || fdgotofflohi |
| 1102 | || ((fd || fdgot12 || fdgotlos || fdgothilo) |
| 1103 | && (symndx != -1 || FRVFDPIC_FUNCDESC_LOCAL (info, d.h)))) */ |
| 1104 | unsigned privfd:1; |
| 1105 | /* Whether a lazy PLT entry is needed for this symbol+addend. |
| 1106 | Should be implied by something like: |
| 1107 | (privfd && symndx == -1 && ! FRVFDPIC_SYM_LOCAL (info, d.h) |
| 1108 | && ! (info->flags & DF_BIND_NOW)) */ |
| 1109 | unsigned lazyplt:1; |
| 1110 | /* Whether we've already emitted GOT relocations and PLT entries as |
| 1111 | needed for this symbol. */ |
| 1112 | unsigned done:1; |
| 1113 | |
| 1114 | /* The number of R_FRV_32, R_FRV_FUNCDESC, R_FRV_FUNCDESC_VALUE and |
| 1115 | R_FRV_TLSDESC_VALUE, R_FRV_TLSOFF relocations referencing |
| 1116 | symbol+addend. */ |
| 1117 | unsigned relocs32, relocsfd, relocsfdv, relocstlsd, relocstlsoff; |
| 1118 | |
| 1119 | /* The number of .rofixups entries and dynamic relocations allocated |
| 1120 | for this symbol, minus any that might have already been used. */ |
| 1121 | unsigned fixups, dynrelocs; |
| 1122 | |
| 1123 | /* The offsets of the GOT entries assigned to symbol+addend, to the |
| 1124 | function descriptor's address, and to a function descriptor, |
| 1125 | respectively. Should be zero if unassigned. The offsets are |
| 1126 | counted from the value that will be assigned to the PIC register, |
| 1127 | not from the beginning of the .got section. */ |
| 1128 | bfd_signed_vma got_entry, fdgot_entry, fd_entry; |
| 1129 | /* The offsets of the PLT entries assigned to symbol+addend, |
| 1130 | non-lazy and lazy, respectively. If unassigned, should be |
| 1131 | (bfd_vma)-1. */ |
| 1132 | bfd_vma plt_entry, lzplt_entry; |
| 1133 | /* The offsets of the GOT entries for TLS offset and TLS descriptor. */ |
| 1134 | bfd_signed_vma tlsoff_entry, tlsdesc_entry; |
| 1135 | /* The offset of the TLS offset PLT entry. */ |
| 1136 | bfd_vma tlsplt_entry; |
| 1137 | }; |
| 1138 | |
| 1139 | /* Compute a hash with the key fields of an frvfdpic_relocs_info entry. */ |
| 1140 | static hashval_t |
| 1141 | frvfdpic_relocs_info_hash (const void *entry_) |
| 1142 | { |
| 1143 | const struct frvfdpic_relocs_info *entry = entry_; |
| 1144 | |
| 1145 | return (entry->symndx == -1 |
| 1146 | ? (long) entry->d.h->root.root.hash |
| 1147 | : entry->symndx + (long) entry->d.abfd->id * 257) + entry->addend; |
| 1148 | } |
| 1149 | |
| 1150 | /* Test whether the key fields of two frvfdpic_relocs_info entries are |
| 1151 | identical. */ |
| 1152 | static int |
| 1153 | frvfdpic_relocs_info_eq (const void *entry1, const void *entry2) |
| 1154 | { |
| 1155 | const struct frvfdpic_relocs_info *e1 = entry1; |
| 1156 | const struct frvfdpic_relocs_info *e2 = entry2; |
| 1157 | |
| 1158 | return e1->symndx == e2->symndx && e1->addend == e2->addend |
| 1159 | && (e1->symndx == -1 ? e1->d.h == e2->d.h : e1->d.abfd == e2->d.abfd); |
| 1160 | } |
| 1161 | |
| 1162 | /* Find or create an entry in a hash table HT that matches the key |
| 1163 | fields of the given ENTRY. If it's not found, memory for a new |
| 1164 | entry is allocated in ABFD's obstack. */ |
| 1165 | static struct frvfdpic_relocs_info * |
| 1166 | frvfdpic_relocs_info_find (struct htab *ht, |
| 1167 | bfd *abfd, |
| 1168 | const struct frvfdpic_relocs_info *entry, |
| 1169 | enum insert_option insert) |
| 1170 | { |
| 1171 | struct frvfdpic_relocs_info **loc = |
| 1172 | (struct frvfdpic_relocs_info **) htab_find_slot (ht, entry, insert); |
| 1173 | |
| 1174 | if (! loc) |
| 1175 | return NULL; |
| 1176 | |
| 1177 | if (*loc) |
| 1178 | return *loc; |
| 1179 | |
| 1180 | *loc = bfd_zalloc (abfd, sizeof (**loc)); |
| 1181 | |
| 1182 | if (! *loc) |
| 1183 | return *loc; |
| 1184 | |
| 1185 | (*loc)->symndx = entry->symndx; |
| 1186 | (*loc)->d = entry->d; |
| 1187 | (*loc)->addend = entry->addend; |
| 1188 | (*loc)->plt_entry = (bfd_vma)-1; |
| 1189 | (*loc)->lzplt_entry = (bfd_vma)-1; |
| 1190 | (*loc)->tlsplt_entry = (bfd_vma)-1; |
| 1191 | |
| 1192 | return *loc; |
| 1193 | } |
| 1194 | |
| 1195 | /* Obtain the address of the entry in HT associated with H's symbol + |
| 1196 | addend, creating a new entry if none existed. ABFD is only used |
| 1197 | for memory allocation purposes. */ |
| 1198 | inline static struct frvfdpic_relocs_info * |
| 1199 | frvfdpic_relocs_info_for_global (struct htab *ht, |
| 1200 | bfd *abfd, |
| 1201 | struct elf_link_hash_entry *h, |
| 1202 | bfd_vma addend, |
| 1203 | enum insert_option insert) |
| 1204 | { |
| 1205 | struct frvfdpic_relocs_info entry; |
| 1206 | |
| 1207 | entry.symndx = -1; |
| 1208 | entry.d.h = h; |
| 1209 | entry.addend = addend; |
| 1210 | |
| 1211 | return frvfdpic_relocs_info_find (ht, abfd, &entry, insert); |
| 1212 | } |
| 1213 | |
| 1214 | /* Obtain the address of the entry in HT associated with the SYMNDXth |
| 1215 | local symbol of the input bfd ABFD, plus the addend, creating a new |
| 1216 | entry if none existed. */ |
| 1217 | inline static struct frvfdpic_relocs_info * |
| 1218 | frvfdpic_relocs_info_for_local (struct htab *ht, |
| 1219 | bfd *abfd, |
| 1220 | long symndx, |
| 1221 | bfd_vma addend, |
| 1222 | enum insert_option insert) |
| 1223 | { |
| 1224 | struct frvfdpic_relocs_info entry; |
| 1225 | |
| 1226 | entry.symndx = symndx; |
| 1227 | entry.d.abfd = abfd; |
| 1228 | entry.addend = addend; |
| 1229 | |
| 1230 | return frvfdpic_relocs_info_find (ht, abfd, &entry, insert); |
| 1231 | } |
| 1232 | |
| 1233 | /* Merge fields set by check_relocs() of two entries that end up being |
| 1234 | mapped to the same (presumably global) symbol. */ |
| 1235 | |
| 1236 | inline static void |
| 1237 | frvfdpic_pic_merge_early_relocs_info (struct frvfdpic_relocs_info *e2, |
| 1238 | struct frvfdpic_relocs_info const *e1) |
| 1239 | { |
| 1240 | e2->got12 |= e1->got12; |
| 1241 | e2->gotlos |= e1->gotlos; |
| 1242 | e2->gothilo |= e1->gothilo; |
| 1243 | e2->fd |= e1->fd; |
| 1244 | e2->fdgot12 |= e1->fdgot12; |
| 1245 | e2->fdgotlos |= e1->fdgotlos; |
| 1246 | e2->fdgothilo |= e1->fdgothilo; |
| 1247 | e2->fdgoff12 |= e1->fdgoff12; |
| 1248 | e2->fdgofflos |= e1->fdgofflos; |
| 1249 | e2->fdgoffhilo |= e1->fdgoffhilo; |
| 1250 | e2->tlsplt |= e1->tlsplt; |
| 1251 | e2->tlsdesc12 |= e1->tlsdesc12; |
| 1252 | e2->tlsdesclos |= e1->tlsdesclos; |
| 1253 | e2->tlsdeschilo |= e1->tlsdeschilo; |
| 1254 | e2->tlsoff12 |= e1->tlsoff12; |
| 1255 | e2->tlsofflos |= e1->tlsofflos; |
| 1256 | e2->tlsoffhilo |= e1->tlsoffhilo; |
| 1257 | e2->gotoff |= e1->gotoff; |
| 1258 | e2->call |= e1->call; |
| 1259 | e2->sym |= e1->sym; |
| 1260 | } |
| 1261 | |
| 1262 | /* Every block of 65535 lazy PLT entries shares a single call to the |
| 1263 | resolver, inserted in the 32768th lazy PLT entry (i.e., entry # |
| 1264 | 32767, counting from 0). All other lazy PLT entries branch to it |
| 1265 | in a single instruction. */ |
| 1266 | |
| 1267 | #define FRVFDPIC_LZPLT_BLOCK_SIZE ((bfd_vma) 8 * 65535 + 4) |
| 1268 | #define FRVFDPIC_LZPLT_RESOLV_LOC (8 * 32767) |
| 1269 | |
| 1270 | /* Add a dynamic relocation to the SRELOC section. */ |
| 1271 | |
| 1272 | inline static bfd_vma |
| 1273 | _frvfdpic_add_dyn_reloc (bfd *output_bfd, asection *sreloc, bfd_vma offset, |
| 1274 | int reloc_type, long dynindx, bfd_vma addend, |
| 1275 | struct frvfdpic_relocs_info *entry) |
| 1276 | { |
| 1277 | Elf_Internal_Rela outrel; |
| 1278 | bfd_vma reloc_offset; |
| 1279 | |
| 1280 | outrel.r_offset = offset; |
| 1281 | outrel.r_info = ELF32_R_INFO (dynindx, reloc_type); |
| 1282 | outrel.r_addend = addend; |
| 1283 | |
| 1284 | reloc_offset = sreloc->reloc_count * sizeof (Elf32_External_Rel); |
| 1285 | BFD_ASSERT (reloc_offset < sreloc->size); |
| 1286 | bfd_elf32_swap_reloc_out (output_bfd, &outrel, |
| 1287 | sreloc->contents + reloc_offset); |
| 1288 | sreloc->reloc_count++; |
| 1289 | |
| 1290 | /* If the entry's index is zero, this relocation was probably to a |
| 1291 | linkonce section that got discarded. We reserved a dynamic |
| 1292 | relocation, but it was for another entry than the one we got at |
| 1293 | the time of emitting the relocation. Unfortunately there's no |
| 1294 | simple way for us to catch this situation, since the relocation |
| 1295 | is cleared right before calling relocate_section, at which point |
| 1296 | we no longer know what the relocation used to point to. */ |
| 1297 | if (entry->symndx) |
| 1298 | { |
| 1299 | BFD_ASSERT (entry->dynrelocs > 0); |
| 1300 | entry->dynrelocs--; |
| 1301 | } |
| 1302 | |
| 1303 | return reloc_offset; |
| 1304 | } |
| 1305 | |
| 1306 | /* Add a fixup to the ROFIXUP section. */ |
| 1307 | |
| 1308 | static bfd_vma |
| 1309 | _frvfdpic_add_rofixup (bfd *output_bfd, asection *rofixup, bfd_vma offset, |
| 1310 | struct frvfdpic_relocs_info *entry) |
| 1311 | { |
| 1312 | bfd_vma fixup_offset; |
| 1313 | |
| 1314 | if (rofixup->flags & SEC_EXCLUDE) |
| 1315 | return -1; |
| 1316 | |
| 1317 | fixup_offset = rofixup->reloc_count * 4; |
| 1318 | if (rofixup->contents) |
| 1319 | { |
| 1320 | BFD_ASSERT (fixup_offset < rofixup->size); |
| 1321 | bfd_put_32 (output_bfd, offset, rofixup->contents + fixup_offset); |
| 1322 | } |
| 1323 | rofixup->reloc_count++; |
| 1324 | |
| 1325 | if (entry && entry->symndx) |
| 1326 | { |
| 1327 | /* See discussion about symndx == 0 in _frvfdpic_add_dyn_reloc |
| 1328 | above. */ |
| 1329 | BFD_ASSERT (entry->fixups > 0); |
| 1330 | entry->fixups--; |
| 1331 | } |
| 1332 | |
| 1333 | return fixup_offset; |
| 1334 | } |
| 1335 | |
| 1336 | /* Find the segment number in which OSEC, and output section, is |
| 1337 | located. */ |
| 1338 | |
| 1339 | static unsigned |
| 1340 | _frvfdpic_osec_to_segment (bfd *output_bfd, asection *osec) |
| 1341 | { |
| 1342 | struct elf_segment_map *m; |
| 1343 | Elf_Internal_Phdr *p; |
| 1344 | |
| 1345 | /* Find the segment that contains the output_section. */ |
| 1346 | for (m = elf_tdata (output_bfd)->segment_map, |
| 1347 | p = elf_tdata (output_bfd)->phdr; |
| 1348 | m != NULL; |
| 1349 | m = m->next, p++) |
| 1350 | { |
| 1351 | int i; |
| 1352 | |
| 1353 | for (i = m->count - 1; i >= 0; i--) |
| 1354 | if (m->sections[i] == osec) |
| 1355 | break; |
| 1356 | |
| 1357 | if (i >= 0) |
| 1358 | break; |
| 1359 | } |
| 1360 | |
| 1361 | return p - elf_tdata (output_bfd)->phdr; |
| 1362 | } |
| 1363 | |
| 1364 | inline static bfd_boolean |
| 1365 | _frvfdpic_osec_readonly_p (bfd *output_bfd, asection *osec) |
| 1366 | { |
| 1367 | unsigned seg = _frvfdpic_osec_to_segment (output_bfd, osec); |
| 1368 | |
| 1369 | return ! (elf_tdata (output_bfd)->phdr[seg].p_flags & PF_W); |
| 1370 | } |
| 1371 | |
| 1372 | #define FRVFDPIC_TLS_BIAS (2048 - 16) |
| 1373 | |
| 1374 | /* Return the base VMA address which should be subtracted from real addresses |
| 1375 | when resolving TLSMOFF relocation. |
| 1376 | This is PT_TLS segment p_vaddr, plus the 2048-16 bias. */ |
| 1377 | |
| 1378 | static bfd_vma |
| 1379 | tls_biased_base (struct bfd_link_info *info) |
| 1380 | { |
| 1381 | /* If tls_sec is NULL, we should have signalled an error already. */ |
| 1382 | if (elf_hash_table (info)->tls_sec == NULL) |
| 1383 | return FRVFDPIC_TLS_BIAS; |
| 1384 | return elf_hash_table (info)->tls_sec->vma + FRVFDPIC_TLS_BIAS; |
| 1385 | } |
| 1386 | |
| 1387 | /* Generate relocations for GOT entries, function descriptors, and |
| 1388 | code for PLT and lazy PLT entries. */ |
| 1389 | |
| 1390 | inline static bfd_boolean |
| 1391 | _frvfdpic_emit_got_relocs_plt_entries (struct frvfdpic_relocs_info *entry, |
| 1392 | bfd *output_bfd, |
| 1393 | struct bfd_link_info *info, |
| 1394 | asection *sec, |
| 1395 | Elf_Internal_Sym *sym, |
| 1396 | bfd_vma addend) |
| 1397 | |
| 1398 | { |
| 1399 | bfd_vma fd_lazy_rel_offset = (bfd_vma)-1; |
| 1400 | int dynindx = -1; |
| 1401 | |
| 1402 | if (entry->done) |
| 1403 | return TRUE; |
| 1404 | entry->done = 1; |
| 1405 | |
| 1406 | if (entry->got_entry || entry->fdgot_entry || entry->fd_entry |
| 1407 | || entry->tlsoff_entry || entry->tlsdesc_entry) |
| 1408 | { |
| 1409 | /* If the symbol is dynamic, consider it for dynamic |
| 1410 | relocations, otherwise decay to section + offset. */ |
| 1411 | if (entry->symndx == -1 && entry->d.h->dynindx != -1) |
| 1412 | dynindx = entry->d.h->dynindx; |
| 1413 | else |
| 1414 | { |
| 1415 | if (sec->output_section |
| 1416 | && ! bfd_is_abs_section (sec->output_section) |
| 1417 | && ! bfd_is_und_section (sec->output_section)) |
| 1418 | dynindx = elf_section_data (sec->output_section)->dynindx; |
| 1419 | else |
| 1420 | dynindx = 0; |
| 1421 | } |
| 1422 | } |
| 1423 | |
| 1424 | /* Generate relocation for GOT entry pointing to the symbol. */ |
| 1425 | if (entry->got_entry) |
| 1426 | { |
| 1427 | int idx = dynindx; |
| 1428 | bfd_vma ad = addend; |
| 1429 | |
| 1430 | /* If the symbol is dynamic but binds locally, use |
| 1431 | section+offset. */ |
| 1432 | if (sec && (entry->symndx != -1 |
| 1433 | || FRVFDPIC_SYM_LOCAL (info, entry->d.h))) |
| 1434 | { |
| 1435 | if (entry->symndx == -1) |
| 1436 | ad += entry->d.h->root.u.def.value; |
| 1437 | else |
| 1438 | ad += sym->st_value; |
| 1439 | ad += sec->output_offset; |
| 1440 | if (sec->output_section && elf_section_data (sec->output_section)) |
| 1441 | idx = elf_section_data (sec->output_section)->dynindx; |
| 1442 | else |
| 1443 | idx = 0; |
| 1444 | } |
| 1445 | |
| 1446 | /* If we're linking an executable at a fixed address, we can |
| 1447 | omit the dynamic relocation as long as the symbol is local to |
| 1448 | this module. */ |
| 1449 | if (info->executable && !info->pie |
| 1450 | && (entry->symndx != -1 |
| 1451 | || FRVFDPIC_SYM_LOCAL (info, entry->d.h))) |
| 1452 | { |
| 1453 | if (sec) |
| 1454 | ad += sec->output_section->vma; |
| 1455 | if (entry->symndx != -1 |
| 1456 | || entry->d.h->root.type != bfd_link_hash_undefweak) |
| 1457 | _frvfdpic_add_rofixup (output_bfd, |
| 1458 | frvfdpic_gotfixup_section (info), |
| 1459 | frvfdpic_got_section (info)->output_section |
| 1460 | ->vma |
| 1461 | + frvfdpic_got_section (info)->output_offset |
| 1462 | + frvfdpic_got_initial_offset (info) |
| 1463 | + entry->got_entry, entry); |
| 1464 | } |
| 1465 | else |
| 1466 | _frvfdpic_add_dyn_reloc (output_bfd, frvfdpic_gotrel_section (info), |
| 1467 | _bfd_elf_section_offset |
| 1468 | (output_bfd, info, |
| 1469 | frvfdpic_got_section (info), |
| 1470 | frvfdpic_got_initial_offset (info) |
| 1471 | + entry->got_entry) |
| 1472 | + frvfdpic_got_section (info) |
| 1473 | ->output_section->vma |
| 1474 | + frvfdpic_got_section (info)->output_offset, |
| 1475 | R_FRV_32, idx, ad, entry); |
| 1476 | |
| 1477 | bfd_put_32 (output_bfd, ad, |
| 1478 | frvfdpic_got_section (info)->contents |
| 1479 | + frvfdpic_got_initial_offset (info) |
| 1480 | + entry->got_entry); |
| 1481 | } |
| 1482 | |
| 1483 | /* Generate relocation for GOT entry pointing to a canonical |
| 1484 | function descriptor. */ |
| 1485 | if (entry->fdgot_entry) |
| 1486 | { |
| 1487 | int reloc, idx; |
| 1488 | bfd_vma ad = 0; |
| 1489 | |
| 1490 | if (! (entry->symndx == -1 |
| 1491 | && entry->d.h->root.type == bfd_link_hash_undefweak |
| 1492 | && FRVFDPIC_SYM_LOCAL (info, entry->d.h))) |
| 1493 | { |
| 1494 | /* If the symbol is dynamic and there may be dynamic symbol |
| 1495 | resolution because we are, or are linked with, a shared |
| 1496 | library, emit a FUNCDESC relocation such that the dynamic |
| 1497 | linker will allocate the function descriptor. If the |
| 1498 | symbol needs a non-local function descriptor but binds |
| 1499 | locally (e.g., its visibility is protected, emit a |
| 1500 | dynamic relocation decayed to section+offset. */ |
| 1501 | if (entry->symndx == -1 |
| 1502 | && ! FRVFDPIC_FUNCDESC_LOCAL (info, entry->d.h) |
| 1503 | && FRVFDPIC_SYM_LOCAL (info, entry->d.h) |
| 1504 | && !(info->executable && !info->pie)) |
| 1505 | { |
| 1506 | reloc = R_FRV_FUNCDESC; |
| 1507 | idx = elf_section_data (entry->d.h->root.u.def.section |
| 1508 | ->output_section)->dynindx; |
| 1509 | ad = entry->d.h->root.u.def.section->output_offset |
| 1510 | + entry->d.h->root.u.def.value; |
| 1511 | } |
| 1512 | else if (entry->symndx == -1 |
| 1513 | && ! FRVFDPIC_FUNCDESC_LOCAL (info, entry->d.h)) |
| 1514 | { |
| 1515 | reloc = R_FRV_FUNCDESC; |
| 1516 | idx = dynindx; |
| 1517 | ad = addend; |
| 1518 | if (ad) |
| 1519 | { |
| 1520 | (*info->callbacks->reloc_dangerous) |
| 1521 | (info, _("relocation requires zero addend"), |
| 1522 | elf_hash_table (info)->dynobj, |
| 1523 | frvfdpic_got_section (info), |
| 1524 | entry->fdgot_entry); |
| 1525 | return FALSE; |
| 1526 | } |
| 1527 | } |
| 1528 | else |
| 1529 | { |
| 1530 | /* Otherwise, we know we have a private function descriptor, |
| 1531 | so reference it directly. */ |
| 1532 | if (elf_hash_table (info)->dynamic_sections_created) |
| 1533 | BFD_ASSERT (entry->privfd); |
| 1534 | reloc = R_FRV_32; |
| 1535 | idx = elf_section_data (frvfdpic_got_section (info) |
| 1536 | ->output_section)->dynindx; |
| 1537 | ad = frvfdpic_got_section (info)->output_offset |
| 1538 | + frvfdpic_got_initial_offset (info) + entry->fd_entry; |
| 1539 | } |
| 1540 | |
| 1541 | /* If there is room for dynamic symbol resolution, emit the |
| 1542 | dynamic relocation. However, if we're linking an |
| 1543 | executable at a fixed location, we won't have emitted a |
| 1544 | dynamic symbol entry for the got section, so idx will be |
| 1545 | zero, which means we can and should compute the address |
| 1546 | of the private descriptor ourselves. */ |
| 1547 | if (info->executable && !info->pie |
| 1548 | && (entry->symndx != -1 |
| 1549 | || FRVFDPIC_FUNCDESC_LOCAL (info, entry->d.h))) |
| 1550 | { |
| 1551 | ad += frvfdpic_got_section (info)->output_section->vma; |
| 1552 | _frvfdpic_add_rofixup (output_bfd, |
| 1553 | frvfdpic_gotfixup_section (info), |
| 1554 | frvfdpic_got_section (info) |
| 1555 | ->output_section->vma |
| 1556 | + frvfdpic_got_section (info) |
| 1557 | ->output_offset |
| 1558 | + frvfdpic_got_initial_offset (info) |
| 1559 | + entry->fdgot_entry, entry); |
| 1560 | } |
| 1561 | else |
| 1562 | _frvfdpic_add_dyn_reloc (output_bfd, |
| 1563 | frvfdpic_gotrel_section (info), |
| 1564 | _bfd_elf_section_offset |
| 1565 | (output_bfd, info, |
| 1566 | frvfdpic_got_section (info), |
| 1567 | frvfdpic_got_initial_offset (info) |
| 1568 | + entry->fdgot_entry) |
| 1569 | + frvfdpic_got_section (info) |
| 1570 | ->output_section->vma |
| 1571 | + frvfdpic_got_section (info) |
| 1572 | ->output_offset, |
| 1573 | reloc, idx, ad, entry); |
| 1574 | } |
| 1575 | |
| 1576 | bfd_put_32 (output_bfd, ad, |
| 1577 | frvfdpic_got_section (info)->contents |
| 1578 | + frvfdpic_got_initial_offset (info) |
| 1579 | + entry->fdgot_entry); |
| 1580 | } |
| 1581 | |
| 1582 | /* Generate relocation to fill in a private function descriptor in |
| 1583 | the GOT. */ |
| 1584 | if (entry->fd_entry) |
| 1585 | { |
| 1586 | int idx = dynindx; |
| 1587 | bfd_vma ad = addend; |
| 1588 | bfd_vma ofst; |
| 1589 | long lowword, highword; |
| 1590 | |
| 1591 | /* If the symbol is dynamic but binds locally, use |
| 1592 | section+offset. */ |
| 1593 | if (sec && (entry->symndx != -1 |
| 1594 | || FRVFDPIC_SYM_LOCAL (info, entry->d.h))) |
| 1595 | { |
| 1596 | if (entry->symndx == -1) |
| 1597 | ad += entry->d.h->root.u.def.value; |
| 1598 | else |
| 1599 | ad += sym->st_value; |
| 1600 | ad += sec->output_offset; |
| 1601 | if (sec->output_section && elf_section_data (sec->output_section)) |
| 1602 | idx = elf_section_data (sec->output_section)->dynindx; |
| 1603 | else |
| 1604 | idx = 0; |
| 1605 | } |
| 1606 | |
| 1607 | /* If we're linking an executable at a fixed address, we can |
| 1608 | omit the dynamic relocation as long as the symbol is local to |
| 1609 | this module. */ |
| 1610 | if (info->executable && !info->pie |
| 1611 | && (entry->symndx != -1 || FRVFDPIC_SYM_LOCAL (info, entry->d.h))) |
| 1612 | { |
| 1613 | if (sec) |
| 1614 | ad += sec->output_section->vma; |
| 1615 | ofst = 0; |
| 1616 | if (entry->symndx != -1 |
| 1617 | || entry->d.h->root.type != bfd_link_hash_undefweak) |
| 1618 | { |
| 1619 | _frvfdpic_add_rofixup (output_bfd, |
| 1620 | frvfdpic_gotfixup_section (info), |
| 1621 | frvfdpic_got_section (info) |
| 1622 | ->output_section->vma |
| 1623 | + frvfdpic_got_section (info) |
| 1624 | ->output_offset |
| 1625 | + frvfdpic_got_initial_offset (info) |
| 1626 | + entry->fd_entry, entry); |
| 1627 | _frvfdpic_add_rofixup (output_bfd, |
| 1628 | frvfdpic_gotfixup_section (info), |
| 1629 | frvfdpic_got_section (info) |
| 1630 | ->output_section->vma |
| 1631 | + frvfdpic_got_section (info) |
| 1632 | ->output_offset |
| 1633 | + frvfdpic_got_initial_offset (info) |
| 1634 | + entry->fd_entry + 4, entry); |
| 1635 | } |
| 1636 | } |
| 1637 | else |
| 1638 | { |
| 1639 | ofst = |
| 1640 | _frvfdpic_add_dyn_reloc (output_bfd, |
| 1641 | entry->lazyplt |
| 1642 | ? frvfdpic_pltrel_section (info) |
| 1643 | : frvfdpic_gotrel_section (info), |
| 1644 | _bfd_elf_section_offset |
| 1645 | (output_bfd, info, |
| 1646 | frvfdpic_got_section (info), |
| 1647 | frvfdpic_got_initial_offset (info) |
| 1648 | + entry->fd_entry) |
| 1649 | + frvfdpic_got_section (info) |
| 1650 | ->output_section->vma |
| 1651 | + frvfdpic_got_section (info) |
| 1652 | ->output_offset, |
| 1653 | R_FRV_FUNCDESC_VALUE, idx, ad, entry); |
| 1654 | } |
| 1655 | |
| 1656 | /* If we've omitted the dynamic relocation, just emit the fixed |
| 1657 | addresses of the symbol and of the local GOT base offset. */ |
| 1658 | if (info->executable && !info->pie && sec && sec->output_section) |
| 1659 | { |
| 1660 | lowword = ad; |
| 1661 | highword = frvfdpic_got_section (info)->output_section->vma |
| 1662 | + frvfdpic_got_section (info)->output_offset |
| 1663 | + frvfdpic_got_initial_offset (info); |
| 1664 | } |
| 1665 | else if (entry->lazyplt) |
| 1666 | { |
| 1667 | if (ad) |
| 1668 | { |
| 1669 | (*info->callbacks->reloc_dangerous) |
| 1670 | (info, _("relocation requires zero addend"), |
| 1671 | elf_hash_table (info)->dynobj, |
| 1672 | frvfdpic_got_section (info), |
| 1673 | entry->fd_entry); |
| 1674 | return FALSE; |
| 1675 | } |
| 1676 | |
| 1677 | fd_lazy_rel_offset = ofst; |
| 1678 | |
| 1679 | /* A function descriptor used for lazy or local resolving is |
| 1680 | initialized such that its high word contains the output |
| 1681 | section index in which the PLT entries are located, and |
| 1682 | the low word contains the address of the lazy PLT entry |
| 1683 | entry point, that must be within the memory region |
| 1684 | assigned to that section. */ |
| 1685 | lowword = entry->lzplt_entry + 4 |
| 1686 | + frvfdpic_plt_section (info)->output_offset |
| 1687 | + frvfdpic_plt_section (info)->output_section->vma; |
| 1688 | highword = _frvfdpic_osec_to_segment |
| 1689 | (output_bfd, frvfdpic_plt_section (info)->output_section); |
| 1690 | } |
| 1691 | else |
| 1692 | { |
| 1693 | /* A function descriptor for a local function gets the index |
| 1694 | of the section. For a non-local function, it's |
| 1695 | disregarded. */ |
| 1696 | lowword = ad; |
| 1697 | if (entry->symndx == -1 && entry->d.h->dynindx != -1 |
| 1698 | && entry->d.h->dynindx == idx) |
| 1699 | highword = 0; |
| 1700 | else |
| 1701 | highword = _frvfdpic_osec_to_segment |
| 1702 | (output_bfd, sec->output_section); |
| 1703 | } |
| 1704 | |
| 1705 | bfd_put_32 (output_bfd, lowword, |
| 1706 | frvfdpic_got_section (info)->contents |
| 1707 | + frvfdpic_got_initial_offset (info) |
| 1708 | + entry->fd_entry); |
| 1709 | bfd_put_32 (output_bfd, highword, |
| 1710 | frvfdpic_got_section (info)->contents |
| 1711 | + frvfdpic_got_initial_offset (info) |
| 1712 | + entry->fd_entry + 4); |
| 1713 | } |
| 1714 | |
| 1715 | /* Generate code for the PLT entry. */ |
| 1716 | if (entry->plt_entry != (bfd_vma) -1) |
| 1717 | { |
| 1718 | bfd_byte *plt_code = frvfdpic_plt_section (info)->contents |
| 1719 | + entry->plt_entry; |
| 1720 | |
| 1721 | BFD_ASSERT (entry->fd_entry); |
| 1722 | |
| 1723 | /* Figure out what kind of PLT entry we need, depending on the |
| 1724 | location of the function descriptor within the GOT. */ |
| 1725 | if (entry->fd_entry >= -(1 << (12 - 1)) |
| 1726 | && entry->fd_entry < (1 << (12 - 1))) |
| 1727 | { |
| 1728 | /* lddi @(gr15, fd_entry), gr14 */ |
| 1729 | bfd_put_32 (output_bfd, |
| 1730 | 0x9cccf000 | (entry->fd_entry & ((1 << 12) - 1)), |
| 1731 | plt_code); |
| 1732 | plt_code += 4; |
| 1733 | } |
| 1734 | else |
| 1735 | { |
| 1736 | if (entry->fd_entry >= -(1 << (16 - 1)) |
| 1737 | && entry->fd_entry < (1 << (16 - 1))) |
| 1738 | { |
| 1739 | /* setlos lo(fd_entry), gr14 */ |
| 1740 | bfd_put_32 (output_bfd, |
| 1741 | 0x9cfc0000 |
| 1742 | | (entry->fd_entry & (((bfd_vma)1 << 16) - 1)), |
| 1743 | plt_code); |
| 1744 | plt_code += 4; |
| 1745 | } |
| 1746 | else |
| 1747 | { |
| 1748 | /* sethi.p hi(fd_entry), gr14 |
| 1749 | setlo lo(fd_entry), gr14 */ |
| 1750 | bfd_put_32 (output_bfd, |
| 1751 | 0x1cf80000 |
| 1752 | | ((entry->fd_entry >> 16) |
| 1753 | & (((bfd_vma)1 << 16) - 1)), |
| 1754 | plt_code); |
| 1755 | plt_code += 4; |
| 1756 | bfd_put_32 (output_bfd, |
| 1757 | 0x9cf40000 |
| 1758 | | (entry->fd_entry & (((bfd_vma)1 << 16) - 1)), |
| 1759 | plt_code); |
| 1760 | plt_code += 4; |
| 1761 | } |
| 1762 | /* ldd @(gr14,gr15),gr14 */ |
| 1763 | bfd_put_32 (output_bfd, 0x9c08e14f, plt_code); |
| 1764 | plt_code += 4; |
| 1765 | } |
| 1766 | /* jmpl @(gr14,gr0) */ |
| 1767 | bfd_put_32 (output_bfd, 0x8030e000, plt_code); |
| 1768 | } |
| 1769 | |
| 1770 | /* Generate code for the lazy PLT entry. */ |
| 1771 | if (entry->lzplt_entry != (bfd_vma) -1) |
| 1772 | { |
| 1773 | bfd_byte *lzplt_code = frvfdpic_plt_section (info)->contents |
| 1774 | + entry->lzplt_entry; |
| 1775 | bfd_vma resolverStub_addr; |
| 1776 | |
| 1777 | bfd_put_32 (output_bfd, fd_lazy_rel_offset, lzplt_code); |
| 1778 | lzplt_code += 4; |
| 1779 | |
| 1780 | resolverStub_addr = entry->lzplt_entry / FRVFDPIC_LZPLT_BLOCK_SIZE |
| 1781 | * FRVFDPIC_LZPLT_BLOCK_SIZE + FRVFDPIC_LZPLT_RESOLV_LOC; |
| 1782 | if (resolverStub_addr >= frvfdpic_plt_initial_offset (info)) |
| 1783 | resolverStub_addr = frvfdpic_plt_initial_offset (info) - 12; |
| 1784 | |
| 1785 | if (entry->lzplt_entry == resolverStub_addr) |
| 1786 | { |
| 1787 | /* This is a lazy PLT entry that includes a resolver call. */ |
| 1788 | /* ldd @(gr15,gr0), gr4 |
| 1789 | jmpl @(gr4,gr0) */ |
| 1790 | bfd_put_32 (output_bfd, 0x8808f140, lzplt_code); |
| 1791 | bfd_put_32 (output_bfd, 0x80304000, lzplt_code + 4); |
| 1792 | } |
| 1793 | else |
| 1794 | { |
| 1795 | /* bra resolverStub */ |
| 1796 | bfd_put_32 (output_bfd, |
| 1797 | 0xc01a0000 |
| 1798 | | (((resolverStub_addr - entry->lzplt_entry) |
| 1799 | / 4) & (((bfd_vma)1 << 16) - 1)), |
| 1800 | lzplt_code); |
| 1801 | } |
| 1802 | } |
| 1803 | |
| 1804 | /* Generate relocation for GOT entry holding the TLS offset. */ |
| 1805 | if (entry->tlsoff_entry) |
| 1806 | { |
| 1807 | int idx = dynindx; |
| 1808 | bfd_vma ad = addend; |
| 1809 | |
| 1810 | if (entry->symndx != -1 |
| 1811 | || FRVFDPIC_SYM_LOCAL (info, entry->d.h)) |
| 1812 | { |
| 1813 | /* If the symbol is dynamic but binds locally, use |
| 1814 | section+offset. */ |
| 1815 | if (sec) |
| 1816 | { |
| 1817 | if (entry->symndx == -1) |
| 1818 | ad += entry->d.h->root.u.def.value; |
| 1819 | else |
| 1820 | ad += sym->st_value; |
| 1821 | ad += sec->output_offset; |
| 1822 | if (sec->output_section |
| 1823 | && elf_section_data (sec->output_section)) |
| 1824 | idx = elf_section_data (sec->output_section)->dynindx; |
| 1825 | else |
| 1826 | idx = 0; |
| 1827 | } |
| 1828 | } |
| 1829 | |
| 1830 | /* *ABS*+addend is special for TLS relocations, use only the |
| 1831 | addend. */ |
| 1832 | if (info->executable |
| 1833 | && idx == 0 |
| 1834 | && (bfd_is_abs_section (sec) |
| 1835 | || bfd_is_und_section (sec))) |
| 1836 | ; |
| 1837 | /* If we're linking an executable, we can entirely omit the |
| 1838 | dynamic relocation if the symbol is local to this module. */ |
| 1839 | else if (info->executable |
| 1840 | && (entry->symndx != -1 |
| 1841 | || FRVFDPIC_SYM_LOCAL (info, entry->d.h))) |
| 1842 | { |
| 1843 | if (sec) |
| 1844 | ad += sec->output_section->vma - tls_biased_base (info); |
| 1845 | } |
| 1846 | else |
| 1847 | { |
| 1848 | if (idx == 0 |
| 1849 | && (bfd_is_abs_section (sec) |
| 1850 | || bfd_is_und_section (sec))) |
| 1851 | { |
| 1852 | if (! elf_hash_table (info)->tls_sec) |
| 1853 | { |
| 1854 | (*info->callbacks->undefined_symbol) |
| 1855 | (info, "TLS section", elf_hash_table (info)->dynobj, |
| 1856 | frvfdpic_got_section (info), entry->tlsoff_entry, TRUE); |
| 1857 | return FALSE; |
| 1858 | } |
| 1859 | idx = elf_section_data (elf_hash_table (info)->tls_sec)->dynindx; |
| 1860 | ad += FRVFDPIC_TLS_BIAS; |
| 1861 | } |
| 1862 | _frvfdpic_add_dyn_reloc (output_bfd, frvfdpic_gotrel_section (info), |
| 1863 | _bfd_elf_section_offset |
| 1864 | (output_bfd, info, |
| 1865 | frvfdpic_got_section (info), |
| 1866 | frvfdpic_got_initial_offset (info) |
| 1867 | + entry->tlsoff_entry) |
| 1868 | + frvfdpic_got_section (info) |
| 1869 | ->output_section->vma |
| 1870 | + frvfdpic_got_section (info) |
| 1871 | ->output_offset, |
| 1872 | R_FRV_TLSOFF, idx, ad, entry); |
| 1873 | } |
| 1874 | |
| 1875 | bfd_put_32 (output_bfd, ad, |
| 1876 | frvfdpic_got_section (info)->contents |
| 1877 | + frvfdpic_got_initial_offset (info) |
| 1878 | + entry->tlsoff_entry); |
| 1879 | } |
| 1880 | |
| 1881 | if (entry->tlsdesc_entry) |
| 1882 | { |
| 1883 | int idx = dynindx; |
| 1884 | bfd_vma ad = addend; |
| 1885 | |
| 1886 | /* If the symbol is dynamic but binds locally, use |
| 1887 | section+offset. */ |
| 1888 | if (sec && (entry->symndx != -1 |
| 1889 | || FRVFDPIC_SYM_LOCAL (info, entry->d.h))) |
| 1890 | { |
| 1891 | if (entry->symndx == -1) |
| 1892 | ad += entry->d.h->root.u.def.value; |
| 1893 | else |
| 1894 | ad += sym->st_value; |
| 1895 | ad += sec->output_offset; |
| 1896 | if (sec->output_section && elf_section_data (sec->output_section)) |
| 1897 | idx = elf_section_data (sec->output_section)->dynindx; |
| 1898 | else |
| 1899 | idx = 0; |
| 1900 | } |
| 1901 | |
| 1902 | /* If we didn't set up a TLS offset entry, but we're linking an |
| 1903 | executable and the symbol binds locally, we can use the |
| 1904 | module offset in the TLS descriptor in relaxations. */ |
| 1905 | if (info->executable && ! entry->tlsoff_entry) |
| 1906 | entry->tlsoff_entry = entry->tlsdesc_entry + 4; |
| 1907 | |
| 1908 | if (info->executable && !info->pie |
| 1909 | && ((idx == 0 |
| 1910 | && (bfd_is_abs_section (sec) |
| 1911 | || bfd_is_und_section (sec))) |
| 1912 | || entry->symndx != -1 |
| 1913 | || FRVFDPIC_SYM_LOCAL (info, entry->d.h))) |
| 1914 | { |
| 1915 | /* *ABS*+addend is special for TLS relocations, use only the |
| 1916 | addend for the TLS offset, and take the module id as |
| 1917 | 0. */ |
| 1918 | if (idx == 0 |
| 1919 | && (bfd_is_abs_section (sec) |
| 1920 | || bfd_is_und_section (sec))) |
| 1921 | ; |
| 1922 | /* For other TLS symbols that bind locally, add the section |
| 1923 | TLS offset to the addend. */ |
| 1924 | else if (sec) |
| 1925 | ad += sec->output_section->vma - tls_biased_base (info); |
| 1926 | |
| 1927 | bfd_put_32 (output_bfd, |
| 1928 | frvfdpic_plt_section (info)->output_section->vma |
| 1929 | + frvfdpic_plt_section (info)->output_offset |
| 1930 | + frvfdpic_plt_tls_ret_offset (info), |
| 1931 | frvfdpic_got_section (info)->contents |
| 1932 | + frvfdpic_got_initial_offset (info) |
| 1933 | + entry->tlsdesc_entry); |
| 1934 | |
| 1935 | _frvfdpic_add_rofixup (output_bfd, |
| 1936 | frvfdpic_gotfixup_section (info), |
| 1937 | frvfdpic_got_section (info) |
| 1938 | ->output_section->vma |
| 1939 | + frvfdpic_got_section (info) |
| 1940 | ->output_offset |
| 1941 | + frvfdpic_got_initial_offset (info) |
| 1942 | + entry->tlsdesc_entry, entry); |
| 1943 | |
| 1944 | BFD_ASSERT (frvfdpic_dynamic_got_plt_info (info)->tls_ret_refs); |
| 1945 | |
| 1946 | /* We've used one of the reserved fixups, so discount it so |
| 1947 | that we can check at the end that we've used them |
| 1948 | all. */ |
| 1949 | frvfdpic_dynamic_got_plt_info (info)->tls_ret_refs--; |
| 1950 | |
| 1951 | /* While at that, make sure the ret instruction makes to the |
| 1952 | right location in the PLT. We could do it only when we |
| 1953 | got to 0, but since the check at the end will only print |
| 1954 | a warning, make sure we have the ret in place in case the |
| 1955 | warning is missed. */ |
| 1956 | bfd_put_32 (output_bfd, 0xc03a4000, |
| 1957 | frvfdpic_plt_section (info)->contents |
| 1958 | + frvfdpic_plt_tls_ret_offset (info)); |
| 1959 | } |
| 1960 | else |
| 1961 | { |
| 1962 | if (idx == 0 |
| 1963 | && (bfd_is_abs_section (sec) |
| 1964 | || bfd_is_und_section (sec))) |
| 1965 | { |
| 1966 | if (! elf_hash_table (info)->tls_sec) |
| 1967 | { |
| 1968 | (*info->callbacks->undefined_symbol) |
| 1969 | (info, "TLS section", elf_hash_table (info)->dynobj, |
| 1970 | frvfdpic_got_section (info), entry->tlsdesc_entry, TRUE); |
| 1971 | return FALSE; |
| 1972 | } |
| 1973 | idx = elf_section_data (elf_hash_table (info)->tls_sec)->dynindx; |
| 1974 | ad += FRVFDPIC_TLS_BIAS; |
| 1975 | } |
| 1976 | |
| 1977 | _frvfdpic_add_dyn_reloc (output_bfd, frvfdpic_gotrel_section (info), |
| 1978 | _bfd_elf_section_offset |
| 1979 | (output_bfd, info, |
| 1980 | frvfdpic_got_section (info), |
| 1981 | frvfdpic_got_initial_offset (info) |
| 1982 | + entry->tlsdesc_entry) |
| 1983 | + frvfdpic_got_section (info) |
| 1984 | ->output_section->vma |
| 1985 | + frvfdpic_got_section (info) |
| 1986 | ->output_offset, |
| 1987 | R_FRV_TLSDESC_VALUE, idx, ad, entry); |
| 1988 | |
| 1989 | bfd_put_32 (output_bfd, 0, |
| 1990 | frvfdpic_got_section (info)->contents |
| 1991 | + frvfdpic_got_initial_offset (info) |
| 1992 | + entry->tlsdesc_entry); |
| 1993 | } |
| 1994 | |
| 1995 | bfd_put_32 (output_bfd, ad, |
| 1996 | frvfdpic_got_section (info)->contents |
| 1997 | + frvfdpic_got_initial_offset (info) |
| 1998 | + entry->tlsdesc_entry + 4); |
| 1999 | } |
| 2000 | |
| 2001 | /* Generate code for the get-TLS-offset PLT entry. */ |
| 2002 | if (entry->tlsplt_entry != (bfd_vma) -1) |
| 2003 | { |
| 2004 | bfd_byte *plt_code = frvfdpic_plt_section (info)->contents |
| 2005 | + entry->tlsplt_entry; |
| 2006 | |
| 2007 | if (info->executable |
| 2008 | && (entry->symndx != -1 |
| 2009 | || FRVFDPIC_SYM_LOCAL (info, entry->d.h))) |
| 2010 | { |
| 2011 | int idx = dynindx; |
| 2012 | bfd_vma ad = addend; |
| 2013 | |
| 2014 | /* sec may be NULL when referencing an undefweak symbol |
| 2015 | while linking a static executable. */ |
| 2016 | if (!sec) |
| 2017 | { |
| 2018 | BFD_ASSERT (entry->symndx == -1 |
| 2019 | && entry->d.h->root.type == bfd_link_hash_undefweak); |
| 2020 | } |
| 2021 | else |
| 2022 | { |
| 2023 | if (entry->symndx == -1) |
| 2024 | ad += entry->d.h->root.u.def.value; |
| 2025 | else |
| 2026 | ad += sym->st_value; |
| 2027 | ad += sec->output_offset; |
| 2028 | if (sec->output_section |
| 2029 | && elf_section_data (sec->output_section)) |
| 2030 | idx = elf_section_data (sec->output_section)->dynindx; |
| 2031 | else |
| 2032 | idx = 0; |
| 2033 | } |
| 2034 | |
| 2035 | /* *ABS*+addend is special for TLS relocations, use only the |
| 2036 | addend for the TLS offset, and take the module id as |
| 2037 | 0. */ |
| 2038 | if (idx == 0 |
| 2039 | && (bfd_is_abs_section (sec) |
| 2040 | || bfd_is_und_section (sec))) |
| 2041 | ; |
| 2042 | /* For other TLS symbols that bind locally, add the section |
| 2043 | TLS offset to the addend. */ |
| 2044 | else if (sec) |
| 2045 | ad += sec->output_section->vma - tls_biased_base (info); |
| 2046 | |
| 2047 | if ((bfd_signed_vma)ad >= -(1 << (16 - 1)) |
| 2048 | && (bfd_signed_vma)ad < (1 << (16 - 1))) |
| 2049 | { |
| 2050 | /* setlos lo(ad), gr9 */ |
| 2051 | bfd_put_32 (output_bfd, |
| 2052 | 0x92fc0000 |
| 2053 | | (ad |
| 2054 | & (((bfd_vma)1 << 16) - 1)), |
| 2055 | plt_code); |
| 2056 | plt_code += 4; |
| 2057 | } |
| 2058 | else |
| 2059 | { |
| 2060 | /* sethi.p hi(ad), gr9 |
| 2061 | setlo lo(ad), gr9 */ |
| 2062 | bfd_put_32 (output_bfd, |
| 2063 | 0x12f80000 |
| 2064 | | ((ad >> 16) |
| 2065 | & (((bfd_vma)1 << 16) - 1)), |
| 2066 | plt_code); |
| 2067 | plt_code += 4; |
| 2068 | bfd_put_32 (output_bfd, |
| 2069 | 0x92f40000 |
| 2070 | | (ad |
| 2071 | & (((bfd_vma)1 << 16) - 1)), |
| 2072 | plt_code); |
| 2073 | plt_code += 4; |
| 2074 | } |
| 2075 | /* ret */ |
| 2076 | bfd_put_32 (output_bfd, 0xc03a4000, plt_code); |
| 2077 | } |
| 2078 | else if (entry->tlsoff_entry) |
| 2079 | { |
| 2080 | /* Figure out what kind of PLT entry we need, depending on the |
| 2081 | location of the TLS descriptor within the GOT. */ |
| 2082 | if (entry->tlsoff_entry >= -(1 << (12 - 1)) |
| 2083 | && entry->tlsoff_entry < (1 << (12 - 1))) |
| 2084 | { |
| 2085 | /* ldi @(gr15, tlsoff_entry), gr9 */ |
| 2086 | bfd_put_32 (output_bfd, |
| 2087 | 0x92c8f000 | (entry->tlsoff_entry |
| 2088 | & ((1 << 12) - 1)), |
| 2089 | plt_code); |
| 2090 | plt_code += 4; |
| 2091 | } |
| 2092 | else |
| 2093 | { |
| 2094 | if (entry->tlsoff_entry >= -(1 << (16 - 1)) |
| 2095 | && entry->tlsoff_entry < (1 << (16 - 1))) |
| 2096 | { |
| 2097 | /* setlos lo(tlsoff_entry), gr8 */ |
| 2098 | bfd_put_32 (output_bfd, |
| 2099 | 0x90fc0000 |
| 2100 | | (entry->tlsoff_entry |
| 2101 | & (((bfd_vma)1 << 16) - 1)), |
| 2102 | plt_code); |
| 2103 | plt_code += 4; |
| 2104 | } |
| 2105 | else |
| 2106 | { |
| 2107 | /* sethi.p hi(tlsoff_entry), gr8 |
| 2108 | setlo lo(tlsoff_entry), gr8 */ |
| 2109 | bfd_put_32 (output_bfd, |
| 2110 | 0x10f80000 |
| 2111 | | ((entry->tlsoff_entry >> 16) |
| 2112 | & (((bfd_vma)1 << 16) - 1)), |
| 2113 | plt_code); |
| 2114 | plt_code += 4; |
| 2115 | bfd_put_32 (output_bfd, |
| 2116 | 0x90f40000 |
| 2117 | | (entry->tlsoff_entry |
| 2118 | & (((bfd_vma)1 << 16) - 1)), |
| 2119 | plt_code); |
| 2120 | plt_code += 4; |
| 2121 | } |
| 2122 | /* ld @(gr15,gr8),gr9 */ |
| 2123 | bfd_put_32 (output_bfd, 0x9008f108, plt_code); |
| 2124 | plt_code += 4; |
| 2125 | } |
| 2126 | /* ret */ |
| 2127 | bfd_put_32 (output_bfd, 0xc03a4000, plt_code); |
| 2128 | } |
| 2129 | else |
| 2130 | { |
| 2131 | BFD_ASSERT (entry->tlsdesc_entry); |
| 2132 | |
| 2133 | /* Figure out what kind of PLT entry we need, depending on the |
| 2134 | location of the TLS descriptor within the GOT. */ |
| 2135 | if (entry->tlsdesc_entry >= -(1 << (12 - 1)) |
| 2136 | && entry->tlsdesc_entry < (1 << (12 - 1))) |
| 2137 | { |
| 2138 | /* lddi @(gr15, tlsdesc_entry), gr8 */ |
| 2139 | bfd_put_32 (output_bfd, |
| 2140 | 0x90ccf000 | (entry->tlsdesc_entry |
| 2141 | & ((1 << 12) - 1)), |
| 2142 | plt_code); |
| 2143 | plt_code += 4; |
| 2144 | } |
| 2145 | else |
| 2146 | { |
| 2147 | if (entry->tlsdesc_entry >= -(1 << (16 - 1)) |
| 2148 | && entry->tlsdesc_entry < (1 << (16 - 1))) |
| 2149 | { |
| 2150 | /* setlos lo(tlsdesc_entry), gr8 */ |
| 2151 | bfd_put_32 (output_bfd, |
| 2152 | 0x90fc0000 |
| 2153 | | (entry->tlsdesc_entry |
| 2154 | & (((bfd_vma)1 << 16) - 1)), |
| 2155 | plt_code); |
| 2156 | plt_code += 4; |
| 2157 | } |
| 2158 | else |
| 2159 | { |
| 2160 | /* sethi.p hi(tlsdesc_entry), gr8 |
| 2161 | setlo lo(tlsdesc_entry), gr8 */ |
| 2162 | bfd_put_32 (output_bfd, |
| 2163 | 0x10f80000 |
| 2164 | | ((entry->tlsdesc_entry >> 16) |
| 2165 | & (((bfd_vma)1 << 16) - 1)), |
| 2166 | plt_code); |
| 2167 | plt_code += 4; |
| 2168 | bfd_put_32 (output_bfd, |
| 2169 | 0x90f40000 |
| 2170 | | (entry->tlsdesc_entry |
| 2171 | & (((bfd_vma)1 << 16) - 1)), |
| 2172 | plt_code); |
| 2173 | plt_code += 4; |
| 2174 | } |
| 2175 | /* ldd @(gr15,gr8),gr8 */ |
| 2176 | bfd_put_32 (output_bfd, 0x9008f148, plt_code); |
| 2177 | plt_code += 4; |
| 2178 | } |
| 2179 | /* jmpl @(gr8,gr0) */ |
| 2180 | bfd_put_32 (output_bfd, 0x80308000, plt_code); |
| 2181 | } |
| 2182 | } |
| 2183 | |
| 2184 | return TRUE; |
| 2185 | } |
| 2186 | |
| 2187 | /* Handle an FRV small data reloc. */ |
| 2188 | |
| 2189 | static bfd_reloc_status_type |
| 2190 | elf32_frv_relocate_gprel12 (info, input_bfd, input_section, relocation, |
| 2191 | contents, value) |
| 2192 | struct bfd_link_info *info; |
| 2193 | bfd *input_bfd; |
| 2194 | asection *input_section; |
| 2195 | Elf_Internal_Rela *relocation; |
| 2196 | bfd_byte *contents; |
| 2197 | bfd_vma value; |
| 2198 | { |
| 2199 | bfd_vma insn; |
| 2200 | bfd_vma gp; |
| 2201 | struct bfd_link_hash_entry *h; |
| 2202 | |
| 2203 | h = bfd_link_hash_lookup (info->hash, "_gp", FALSE, FALSE, TRUE); |
| 2204 | |
| 2205 | gp = (h->u.def.value |
| 2206 | + h->u.def.section->output_section->vma |
| 2207 | + h->u.def.section->output_offset); |
| 2208 | |
| 2209 | value -= input_section->output_section->vma; |
| 2210 | value -= (gp - input_section->output_section->vma); |
| 2211 | |
| 2212 | insn = bfd_get_32 (input_bfd, contents + relocation->r_offset); |
| 2213 | |
| 2214 | value += relocation->r_addend; |
| 2215 | |
| 2216 | if ((long) value > 0x7ff || (long) value < -0x800) |
| 2217 | return bfd_reloc_overflow; |
| 2218 | |
| 2219 | bfd_put_32 (input_bfd, |
| 2220 | (insn & 0xfffff000) | (value & 0xfff), |
| 2221 | contents + relocation->r_offset); |
| 2222 | |
| 2223 | return bfd_reloc_ok; |
| 2224 | } |
| 2225 | |
| 2226 | /* Handle an FRV small data reloc. for the u12 field. */ |
| 2227 | |
| 2228 | static bfd_reloc_status_type |
| 2229 | elf32_frv_relocate_gprelu12 (info, input_bfd, input_section, relocation, |
| 2230 | contents, value) |
| 2231 | struct bfd_link_info *info; |
| 2232 | bfd *input_bfd; |
| 2233 | asection *input_section; |
| 2234 | Elf_Internal_Rela *relocation; |
| 2235 | bfd_byte *contents; |
| 2236 | bfd_vma value; |
| 2237 | { |
| 2238 | bfd_vma insn; |
| 2239 | bfd_vma gp; |
| 2240 | struct bfd_link_hash_entry *h; |
| 2241 | bfd_vma mask; |
| 2242 | |
| 2243 | h = bfd_link_hash_lookup (info->hash, "_gp", FALSE, FALSE, TRUE); |
| 2244 | |
| 2245 | gp = (h->u.def.value |
| 2246 | + h->u.def.section->output_section->vma |
| 2247 | + h->u.def.section->output_offset); |
| 2248 | |
| 2249 | value -= input_section->output_section->vma; |
| 2250 | value -= (gp - input_section->output_section->vma); |
| 2251 | |
| 2252 | insn = bfd_get_32 (input_bfd, contents + relocation->r_offset); |
| 2253 | |
| 2254 | value += relocation->r_addend; |
| 2255 | |
| 2256 | if ((long) value > 0x7ff || (long) value < -0x800) |
| 2257 | return bfd_reloc_overflow; |
| 2258 | |
| 2259 | /* The high 6 bits go into bits 17-12. The low 6 bits go into bits 5-0. */ |
| 2260 | mask = 0x3f03f; |
| 2261 | insn = (insn & ~mask) | ((value & 0xfc0) << 12) | (value & 0x3f); |
| 2262 | |
| 2263 | bfd_put_32 (input_bfd, insn, contents + relocation->r_offset); |
| 2264 | |
| 2265 | return bfd_reloc_ok; |
| 2266 | } |
| 2267 | |
| 2268 | /* Handle an FRV ELF HI16 reloc. */ |
| 2269 | |
| 2270 | static bfd_reloc_status_type |
| 2271 | elf32_frv_relocate_hi16 (input_bfd, relhi, contents, value) |
| 2272 | bfd *input_bfd; |
| 2273 | Elf_Internal_Rela *relhi; |
| 2274 | bfd_byte *contents; |
| 2275 | bfd_vma value; |
| 2276 | { |
| 2277 | bfd_vma insn; |
| 2278 | |
| 2279 | insn = bfd_get_32 (input_bfd, contents + relhi->r_offset); |
| 2280 | |
| 2281 | value += relhi->r_addend; |
| 2282 | value = ((value >> 16) & 0xffff); |
| 2283 | |
| 2284 | insn = (insn & 0xffff0000) | value; |
| 2285 | |
| 2286 | if ((long) value > 0xffff || (long) value < -0x10000) |
| 2287 | return bfd_reloc_overflow; |
| 2288 | |
| 2289 | bfd_put_32 (input_bfd, insn, contents + relhi->r_offset); |
| 2290 | return bfd_reloc_ok; |
| 2291 | |
| 2292 | } |
| 2293 | static bfd_reloc_status_type |
| 2294 | elf32_frv_relocate_lo16 (input_bfd, rello, contents, value) |
| 2295 | bfd *input_bfd; |
| 2296 | Elf_Internal_Rela *rello; |
| 2297 | bfd_byte *contents; |
| 2298 | bfd_vma value; |
| 2299 | { |
| 2300 | bfd_vma insn; |
| 2301 | |
| 2302 | insn = bfd_get_32 (input_bfd, contents + rello->r_offset); |
| 2303 | |
| 2304 | value += rello->r_addend; |
| 2305 | value = value & 0xffff; |
| 2306 | |
| 2307 | insn = (insn & 0xffff0000) | value; |
| 2308 | |
| 2309 | if ((long) value > 0xffff || (long) value < -0x10000) |
| 2310 | return bfd_reloc_overflow; |
| 2311 | |
| 2312 | bfd_put_32 (input_bfd, insn, contents + rello->r_offset); |
| 2313 | return bfd_reloc_ok; |
| 2314 | } |
| 2315 | |
| 2316 | /* Perform the relocation for the CALL label24 instruction. */ |
| 2317 | |
| 2318 | static bfd_reloc_status_type |
| 2319 | elf32_frv_relocate_label24 (input_bfd, input_section, rello, contents, value) |
| 2320 | bfd *input_bfd; |
| 2321 | asection *input_section; |
| 2322 | Elf_Internal_Rela *rello; |
| 2323 | bfd_byte *contents; |
| 2324 | bfd_vma value; |
| 2325 | { |
| 2326 | bfd_vma insn; |
| 2327 | bfd_vma label6; |
| 2328 | bfd_vma label18; |
| 2329 | |
| 2330 | /* The format for the call instruction is: |
| 2331 | |
| 2332 | 0 000000 0001111 000000000000000000 |
| 2333 | label6 opcode label18 |
| 2334 | |
| 2335 | The branch calculation is: pc + (4*label24) |
| 2336 | where label24 is the concatenation of label6 and label18. */ |
| 2337 | |
| 2338 | /* Grab the instruction. */ |
| 2339 | insn = bfd_get_32 (input_bfd, contents + rello->r_offset); |
| 2340 | |
| 2341 | value -= input_section->output_section->vma + input_section->output_offset; |
| 2342 | value -= rello->r_offset; |
| 2343 | value += rello->r_addend; |
| 2344 | |
| 2345 | value = value >> 2; |
| 2346 | |
| 2347 | label6 = value & 0xfc0000; |
| 2348 | label6 = label6 << 7; |
| 2349 | |
| 2350 | label18 = value & 0x3ffff; |
| 2351 | |
| 2352 | insn = insn & 0x803c0000; |
| 2353 | insn = insn | label6; |
| 2354 | insn = insn | label18; |
| 2355 | |
| 2356 | bfd_put_32 (input_bfd, insn, contents + rello->r_offset); |
| 2357 | |
| 2358 | return bfd_reloc_ok; |
| 2359 | } |
| 2360 | |
| 2361 | static bfd_reloc_status_type |
| 2362 | elf32_frv_relocate_gprelhi (info, input_bfd, input_section, relocation, |
| 2363 | contents, value) |
| 2364 | struct bfd_link_info *info; |
| 2365 | bfd *input_bfd; |
| 2366 | asection *input_section; |
| 2367 | Elf_Internal_Rela *relocation; |
| 2368 | bfd_byte *contents; |
| 2369 | bfd_vma value; |
| 2370 | { |
| 2371 | bfd_vma insn; |
| 2372 | bfd_vma gp; |
| 2373 | struct bfd_link_hash_entry *h; |
| 2374 | |
| 2375 | h = bfd_link_hash_lookup (info->hash, "_gp", FALSE, FALSE, TRUE); |
| 2376 | |
| 2377 | gp = (h->u.def.value |
| 2378 | + h->u.def.section->output_section->vma |
| 2379 | + h->u.def.section->output_offset); |
| 2380 | |
| 2381 | value -= input_section->output_section->vma; |
| 2382 | value -= (gp - input_section->output_section->vma); |
| 2383 | value += relocation->r_addend; |
| 2384 | value = ((value >> 16) & 0xffff); |
| 2385 | |
| 2386 | if ((long) value > 0xffff || (long) value < -0x10000) |
| 2387 | return bfd_reloc_overflow; |
| 2388 | |
| 2389 | insn = bfd_get_32 (input_bfd, contents + relocation->r_offset); |
| 2390 | insn = (insn & 0xffff0000) | value; |
| 2391 | |
| 2392 | bfd_put_32 (input_bfd, insn, contents + relocation->r_offset); |
| 2393 | return bfd_reloc_ok; |
| 2394 | } |
| 2395 | |
| 2396 | static bfd_reloc_status_type |
| 2397 | elf32_frv_relocate_gprello (info, input_bfd, input_section, relocation, |
| 2398 | contents, value) |
| 2399 | struct bfd_link_info *info; |
| 2400 | bfd *input_bfd; |
| 2401 | asection *input_section; |
| 2402 | Elf_Internal_Rela *relocation; |
| 2403 | bfd_byte *contents; |
| 2404 | bfd_vma value; |
| 2405 | { |
| 2406 | bfd_vma insn; |
| 2407 | bfd_vma gp; |
| 2408 | struct bfd_link_hash_entry *h; |
| 2409 | |
| 2410 | h = bfd_link_hash_lookup (info->hash, "_gp", FALSE, FALSE, TRUE); |
| 2411 | |
| 2412 | gp = (h->u.def.value |
| 2413 | + h->u.def.section->output_section->vma |
| 2414 | + h->u.def.section->output_offset); |
| 2415 | |
| 2416 | value -= input_section->output_section->vma; |
| 2417 | value -= (gp - input_section->output_section->vma); |
| 2418 | value += relocation->r_addend; |
| 2419 | value = value & 0xffff; |
| 2420 | |
| 2421 | if ((long) value > 0xffff || (long) value < -0x10000) |
| 2422 | return bfd_reloc_overflow; |
| 2423 | |
| 2424 | insn = bfd_get_32 (input_bfd, contents + relocation->r_offset); |
| 2425 | insn = (insn & 0xffff0000) | value; |
| 2426 | |
| 2427 | bfd_put_32 (input_bfd, insn, contents + relocation->r_offset); |
| 2428 | |
| 2429 | return bfd_reloc_ok; |
| 2430 | } |
| 2431 | |
| 2432 | static reloc_howto_type * |
| 2433 | frv_reloc_type_lookup (abfd, code) |
| 2434 | bfd *abfd ATTRIBUTE_UNUSED; |
| 2435 | bfd_reloc_code_real_type code; |
| 2436 | { |
| 2437 | switch (code) |
| 2438 | { |
| 2439 | default: |
| 2440 | break; |
| 2441 | |
| 2442 | case BFD_RELOC_NONE: |
| 2443 | return &elf32_frv_howto_table[ (int) R_FRV_NONE]; |
| 2444 | |
| 2445 | case BFD_RELOC_32: |
| 2446 | if (elf_elfheader (abfd)->e_type == ET_EXEC |
| 2447 | || elf_elfheader (abfd)->e_type == ET_DYN) |
| 2448 | return &elf32_frv_rel_32_howto; |
| 2449 | /* Fall through. */ |
| 2450 | case BFD_RELOC_CTOR: |
| 2451 | return &elf32_frv_howto_table[ (int) R_FRV_32]; |
| 2452 | |
| 2453 | case BFD_RELOC_FRV_LABEL16: |
| 2454 | return &elf32_frv_howto_table[ (int) R_FRV_LABEL16]; |
| 2455 | |
| 2456 | case BFD_RELOC_FRV_LABEL24: |
| 2457 | return &elf32_frv_howto_table[ (int) R_FRV_LABEL24]; |
| 2458 | |
| 2459 | case BFD_RELOC_FRV_LO16: |
| 2460 | return &elf32_frv_howto_table[ (int) R_FRV_LO16]; |
| 2461 | |
| 2462 | case BFD_RELOC_FRV_HI16: |
| 2463 | return &elf32_frv_howto_table[ (int) R_FRV_HI16]; |
| 2464 | |
| 2465 | case BFD_RELOC_FRV_GPREL12: |
| 2466 | return &elf32_frv_howto_table[ (int) R_FRV_GPREL12]; |
| 2467 | |
| 2468 | case BFD_RELOC_FRV_GPRELU12: |
| 2469 | return &elf32_frv_howto_table[ (int) R_FRV_GPRELU12]; |
| 2470 | |
| 2471 | case BFD_RELOC_FRV_GPREL32: |
| 2472 | return &elf32_frv_howto_table[ (int) R_FRV_GPREL32]; |
| 2473 | |
| 2474 | case BFD_RELOC_FRV_GPRELHI: |
| 2475 | return &elf32_frv_howto_table[ (int) R_FRV_GPRELHI]; |
| 2476 | |
| 2477 | case BFD_RELOC_FRV_GPRELLO: |
| 2478 | return &elf32_frv_howto_table[ (int) R_FRV_GPRELLO]; |
| 2479 | |
| 2480 | case BFD_RELOC_FRV_GOT12: |
| 2481 | return &elf32_frv_howto_table[ (int) R_FRV_GOT12]; |
| 2482 | |
| 2483 | case BFD_RELOC_FRV_GOTHI: |
| 2484 | return &elf32_frv_howto_table[ (int) R_FRV_GOTHI]; |
| 2485 | |
| 2486 | case BFD_RELOC_FRV_GOTLO: |
| 2487 | return &elf32_frv_howto_table[ (int) R_FRV_GOTLO]; |
| 2488 | |
| 2489 | case BFD_RELOC_FRV_FUNCDESC: |
| 2490 | if (elf_elfheader (abfd)->e_type == ET_EXEC |
| 2491 | || elf_elfheader (abfd)->e_type == ET_DYN) |
| 2492 | return &elf32_frv_rel_funcdesc_howto; |
| 2493 | return &elf32_frv_howto_table[ (int) R_FRV_FUNCDESC]; |
| 2494 | |
| 2495 | case BFD_RELOC_FRV_FUNCDESC_GOT12: |
| 2496 | return &elf32_frv_howto_table[ (int) R_FRV_FUNCDESC_GOT12]; |
| 2497 | |
| 2498 | case BFD_RELOC_FRV_FUNCDESC_GOTHI: |
| 2499 | return &elf32_frv_howto_table[ (int) R_FRV_FUNCDESC_GOTHI]; |
| 2500 | |
| 2501 | case BFD_RELOC_FRV_FUNCDESC_GOTLO: |
| 2502 | return &elf32_frv_howto_table[ (int) R_FRV_FUNCDESC_GOTLO]; |
| 2503 | |
| 2504 | case BFD_RELOC_FRV_FUNCDESC_VALUE: |
| 2505 | if (elf_elfheader (abfd)->e_type == ET_EXEC |
| 2506 | || elf_elfheader (abfd)->e_type == ET_DYN) |
| 2507 | return &elf32_frv_rel_funcdesc_value_howto; |
| 2508 | return &elf32_frv_howto_table[ (int) R_FRV_FUNCDESC_VALUE]; |
| 2509 | |
| 2510 | case BFD_RELOC_FRV_FUNCDESC_GOTOFF12: |
| 2511 | return &elf32_frv_howto_table[ (int) R_FRV_FUNCDESC_GOTOFF12]; |
| 2512 | |
| 2513 | case BFD_RELOC_FRV_FUNCDESC_GOTOFFHI: |
| 2514 | return &elf32_frv_howto_table[ (int) R_FRV_FUNCDESC_GOTOFFHI]; |
| 2515 | |
| 2516 | case BFD_RELOC_FRV_FUNCDESC_GOTOFFLO: |
| 2517 | return &elf32_frv_howto_table[ (int) R_FRV_FUNCDESC_GOTOFFLO]; |
| 2518 | |
| 2519 | case BFD_RELOC_FRV_GOTOFF12: |
| 2520 | return &elf32_frv_howto_table[ (int) R_FRV_GOTOFF12]; |
| 2521 | |
| 2522 | case BFD_RELOC_FRV_GOTOFFHI: |
| 2523 | return &elf32_frv_howto_table[ (int) R_FRV_GOTOFFHI]; |
| 2524 | |
| 2525 | case BFD_RELOC_FRV_GOTOFFLO: |
| 2526 | return &elf32_frv_howto_table[ (int) R_FRV_GOTOFFLO]; |
| 2527 | |
| 2528 | case BFD_RELOC_FRV_GETTLSOFF: |
| 2529 | return &elf32_frv_howto_table[ (int) R_FRV_GETTLSOFF]; |
| 2530 | |
| 2531 | case BFD_RELOC_FRV_TLSDESC_VALUE: |
| 2532 | if (elf_elfheader (abfd)->e_type == ET_EXEC |
| 2533 | || elf_elfheader (abfd)->e_type == ET_DYN) |
| 2534 | return &elf32_frv_rel_tlsdesc_value_howto; |
| 2535 | return &elf32_frv_howto_table[ (int) R_FRV_TLSDESC_VALUE]; |
| 2536 | |
| 2537 | case BFD_RELOC_FRV_GOTTLSDESC12: |
| 2538 | return &elf32_frv_howto_table[ (int) R_FRV_GOTTLSDESC12]; |
| 2539 | |
| 2540 | case BFD_RELOC_FRV_GOTTLSDESCHI: |
| 2541 | return &elf32_frv_howto_table[ (int) R_FRV_GOTTLSDESCHI]; |
| 2542 | |
| 2543 | case BFD_RELOC_FRV_GOTTLSDESCLO: |
| 2544 | return &elf32_frv_howto_table[ (int) R_FRV_GOTTLSDESCLO]; |
| 2545 | |
| 2546 | case BFD_RELOC_FRV_TLSMOFF12: |
| 2547 | return &elf32_frv_howto_table[ (int) R_FRV_TLSMOFF12]; |
| 2548 | |
| 2549 | case BFD_RELOC_FRV_TLSMOFFHI: |
| 2550 | return &elf32_frv_howto_table[ (int) R_FRV_TLSMOFFHI]; |
| 2551 | |
| 2552 | case BFD_RELOC_FRV_TLSMOFFLO: |
| 2553 | return &elf32_frv_howto_table[ (int) R_FRV_TLSMOFFLO]; |
| 2554 | |
| 2555 | case BFD_RELOC_FRV_GOTTLSOFF12: |
| 2556 | return &elf32_frv_howto_table[ (int) R_FRV_GOTTLSOFF12]; |
| 2557 | |
| 2558 | case BFD_RELOC_FRV_GOTTLSOFFHI: |
| 2559 | return &elf32_frv_howto_table[ (int) R_FRV_GOTTLSOFFHI]; |
| 2560 | |
| 2561 | case BFD_RELOC_FRV_GOTTLSOFFLO: |
| 2562 | return &elf32_frv_howto_table[ (int) R_FRV_GOTTLSOFFLO]; |
| 2563 | |
| 2564 | case BFD_RELOC_FRV_TLSOFF: |
| 2565 | if (elf_elfheader (abfd)->e_type == ET_EXEC |
| 2566 | || elf_elfheader (abfd)->e_type == ET_DYN) |
| 2567 | return &elf32_frv_rel_tlsoff_howto; |
| 2568 | return &elf32_frv_howto_table[ (int) R_FRV_TLSOFF]; |
| 2569 | |
| 2570 | case BFD_RELOC_FRV_TLSDESC_RELAX: |
| 2571 | return &elf32_frv_howto_table[ (int) R_FRV_TLSDESC_RELAX]; |
| 2572 | |
| 2573 | case BFD_RELOC_FRV_GETTLSOFF_RELAX: |
| 2574 | return &elf32_frv_howto_table[ (int) R_FRV_GETTLSOFF_RELAX]; |
| 2575 | |
| 2576 | case BFD_RELOC_FRV_TLSOFF_RELAX: |
| 2577 | return &elf32_frv_howto_table[ (int) R_FRV_TLSOFF_RELAX]; |
| 2578 | |
| 2579 | case BFD_RELOC_FRV_TLSMOFF: |
| 2580 | return &elf32_frv_howto_table[ (int) R_FRV_TLSMOFF]; |
| 2581 | |
| 2582 | case BFD_RELOC_VTABLE_INHERIT: |
| 2583 | return &elf32_frv_vtinherit_howto; |
| 2584 | |
| 2585 | case BFD_RELOC_VTABLE_ENTRY: |
| 2586 | return &elf32_frv_vtentry_howto; |
| 2587 | } |
| 2588 | |
| 2589 | return NULL; |
| 2590 | } |
| 2591 | |
| 2592 | /* Set the howto pointer for an FRV ELF reloc. */ |
| 2593 | |
| 2594 | static void |
| 2595 | frv_info_to_howto_rela (abfd, cache_ptr, dst) |
| 2596 | bfd *abfd ATTRIBUTE_UNUSED; |
| 2597 | arelent *cache_ptr; |
| 2598 | Elf_Internal_Rela *dst; |
| 2599 | { |
| 2600 | unsigned int r_type; |
| 2601 | |
| 2602 | r_type = ELF32_R_TYPE (dst->r_info); |
| 2603 | switch (r_type) |
| 2604 | { |
| 2605 | case R_FRV_GNU_VTINHERIT: |
| 2606 | cache_ptr->howto = &elf32_frv_vtinherit_howto; |
| 2607 | break; |
| 2608 | |
| 2609 | case R_FRV_GNU_VTENTRY: |
| 2610 | cache_ptr->howto = &elf32_frv_vtentry_howto; |
| 2611 | break; |
| 2612 | |
| 2613 | default: |
| 2614 | cache_ptr->howto = & elf32_frv_howto_table [r_type]; |
| 2615 | break; |
| 2616 | } |
| 2617 | } |
| 2618 | |
| 2619 | /* Set the howto pointer for an FRV ELF REL reloc. */ |
| 2620 | static void |
| 2621 | frvfdpic_info_to_howto_rel (bfd *abfd ATTRIBUTE_UNUSED, |
| 2622 | arelent *cache_ptr, Elf_Internal_Rela *dst) |
| 2623 | { |
| 2624 | unsigned int r_type; |
| 2625 | |
| 2626 | r_type = ELF32_R_TYPE (dst->r_info); |
| 2627 | switch (r_type) |
| 2628 | { |
| 2629 | case R_FRV_32: |
| 2630 | cache_ptr->howto = &elf32_frv_rel_32_howto; |
| 2631 | break; |
| 2632 | |
| 2633 | case R_FRV_FUNCDESC: |
| 2634 | cache_ptr->howto = &elf32_frv_rel_funcdesc_howto; |
| 2635 | break; |
| 2636 | |
| 2637 | case R_FRV_FUNCDESC_VALUE: |
| 2638 | cache_ptr->howto = &elf32_frv_rel_funcdesc_value_howto; |
| 2639 | break; |
| 2640 | |
| 2641 | case R_FRV_TLSDESC_VALUE: |
| 2642 | cache_ptr->howto = &elf32_frv_rel_tlsdesc_value_howto; |
| 2643 | break; |
| 2644 | |
| 2645 | case R_FRV_TLSOFF: |
| 2646 | cache_ptr->howto = &elf32_frv_rel_tlsoff_howto; |
| 2647 | break; |
| 2648 | |
| 2649 | default: |
| 2650 | cache_ptr->howto = NULL; |
| 2651 | break; |
| 2652 | } |
| 2653 | } |
| 2654 | \f |
| 2655 | /* Perform a single relocation. By default we use the standard BFD |
| 2656 | routines, but a few relocs, we have to do them ourselves. */ |
| 2657 | |
| 2658 | static bfd_reloc_status_type |
| 2659 | frv_final_link_relocate (howto, input_bfd, input_section, contents, rel, |
| 2660 | relocation) |
| 2661 | reloc_howto_type *howto; |
| 2662 | bfd *input_bfd; |
| 2663 | asection *input_section; |
| 2664 | bfd_byte *contents; |
| 2665 | Elf_Internal_Rela *rel; |
| 2666 | bfd_vma relocation; |
| 2667 | { |
| 2668 | return _bfd_final_link_relocate (howto, input_bfd, input_section, |
| 2669 | contents, rel->r_offset, relocation, |
| 2670 | rel->r_addend); |
| 2671 | } |
| 2672 | |
| 2673 | \f |
| 2674 | /* Relocate an FRV ELF section. |
| 2675 | |
| 2676 | The RELOCATE_SECTION function is called by the new ELF backend linker |
| 2677 | to handle the relocations for a section. |
| 2678 | |
| 2679 | The relocs are always passed as Rela structures; if the section |
| 2680 | actually uses Rel structures, the r_addend field will always be |
| 2681 | zero. |
| 2682 | |
| 2683 | This function is responsible for adjusting the section contents as |
| 2684 | necessary, and (if using Rela relocs and generating a relocatable |
| 2685 | output file) adjusting the reloc addend as necessary. |
| 2686 | |
| 2687 | This function does not have to worry about setting the reloc |
| 2688 | address or the reloc symbol index. |
| 2689 | |
| 2690 | LOCAL_SYMS is a pointer to the swapped in local symbols. |
| 2691 | |
| 2692 | LOCAL_SECTIONS is an array giving the section in the input file |
| 2693 | corresponding to the st_shndx field of each local symbol. |
| 2694 | |
| 2695 | The global hash table entry for the global symbols can be found |
| 2696 | via elf_sym_hashes (input_bfd). |
| 2697 | |
| 2698 | When generating relocatable output, this function must handle |
| 2699 | STB_LOCAL/STT_SECTION symbols specially. The output symbol is |
| 2700 | going to be the section symbol corresponding to the output |
| 2701 | section, which means that the addend must be adjusted |
| 2702 | accordingly. */ |
| 2703 | |
| 2704 | static bfd_boolean |
| 2705 | elf32_frv_relocate_section (output_bfd, info, input_bfd, input_section, |
| 2706 | contents, relocs, local_syms, local_sections) |
| 2707 | bfd *output_bfd ATTRIBUTE_UNUSED; |
| 2708 | struct bfd_link_info *info; |
| 2709 | bfd *input_bfd; |
| 2710 | asection *input_section; |
| 2711 | bfd_byte *contents; |
| 2712 | Elf_Internal_Rela *relocs; |
| 2713 | Elf_Internal_Sym *local_syms; |
| 2714 | asection **local_sections; |
| 2715 | { |
| 2716 | Elf_Internal_Shdr *symtab_hdr; |
| 2717 | struct elf_link_hash_entry **sym_hashes; |
| 2718 | Elf_Internal_Rela *rel; |
| 2719 | Elf_Internal_Rela *relend; |
| 2720 | unsigned isec_segment, got_segment, plt_segment, gprel_segment, tls_segment, |
| 2721 | check_segment[2]; |
| 2722 | int silence_segment_error = !(info->shared || info->pie); |
| 2723 | unsigned long insn; |
| 2724 | |
| 2725 | if (info->relocatable) |
| 2726 | return TRUE; |
| 2727 | |
| 2728 | symtab_hdr = & elf_tdata (input_bfd)->symtab_hdr; |
| 2729 | sym_hashes = elf_sym_hashes (input_bfd); |
| 2730 | relend = relocs + input_section->reloc_count; |
| 2731 | |
| 2732 | isec_segment = _frvfdpic_osec_to_segment (output_bfd, |
| 2733 | input_section->output_section); |
| 2734 | if (IS_FDPIC (output_bfd) && frvfdpic_got_section (info)) |
| 2735 | got_segment = _frvfdpic_osec_to_segment (output_bfd, |
| 2736 | frvfdpic_got_section (info) |
| 2737 | ->output_section); |
| 2738 | else |
| 2739 | got_segment = -1; |
| 2740 | if (IS_FDPIC (output_bfd) && frvfdpic_gotfixup_section (info)) |
| 2741 | gprel_segment = _frvfdpic_osec_to_segment (output_bfd, |
| 2742 | frvfdpic_gotfixup_section (info) |
| 2743 | ->output_section); |
| 2744 | else |
| 2745 | gprel_segment = -1; |
| 2746 | if (IS_FDPIC (output_bfd) && frvfdpic_plt_section (info)) |
| 2747 | plt_segment = _frvfdpic_osec_to_segment (output_bfd, |
| 2748 | frvfdpic_plt_section (info) |
| 2749 | ->output_section); |
| 2750 | else |
| 2751 | plt_segment = -1; |
| 2752 | if (elf_hash_table (info)->tls_sec) |
| 2753 | tls_segment = _frvfdpic_osec_to_segment (output_bfd, |
| 2754 | elf_hash_table (info)->tls_sec); |
| 2755 | else |
| 2756 | tls_segment = -1; |
| 2757 | |
| 2758 | for (rel = relocs; rel < relend; rel ++) |
| 2759 | { |
| 2760 | reloc_howto_type *howto; |
| 2761 | unsigned long r_symndx; |
| 2762 | Elf_Internal_Sym *sym; |
| 2763 | asection *sec; |
| 2764 | struct elf_link_hash_entry *h; |
| 2765 | bfd_vma relocation; |
| 2766 | bfd_reloc_status_type r; |
| 2767 | const char * name = NULL; |
| 2768 | int r_type; |
| 2769 | asection *osec; |
| 2770 | struct frvfdpic_relocs_info *picrel; |
| 2771 | bfd_vma orig_addend = rel->r_addend; |
| 2772 | |
| 2773 | r_type = ELF32_R_TYPE (rel->r_info); |
| 2774 | |
| 2775 | if ( r_type == R_FRV_GNU_VTINHERIT |
| 2776 | || r_type == R_FRV_GNU_VTENTRY) |
| 2777 | continue; |
| 2778 | |
| 2779 | /* This is a final link. */ |
| 2780 | r_symndx = ELF32_R_SYM (rel->r_info); |
| 2781 | howto = elf32_frv_howto_table + ELF32_R_TYPE (rel->r_info); |
| 2782 | h = NULL; |
| 2783 | sym = NULL; |
| 2784 | sec = NULL; |
| 2785 | |
| 2786 | if (r_symndx < symtab_hdr->sh_info) |
| 2787 | { |
| 2788 | sym = local_syms + r_symndx; |
| 2789 | osec = sec = local_sections [r_symndx]; |
| 2790 | relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel); |
| 2791 | |
| 2792 | name = bfd_elf_string_from_elf_section |
| 2793 | (input_bfd, symtab_hdr->sh_link, sym->st_name); |
| 2794 | name = (name == NULL) ? bfd_section_name (input_bfd, sec) : name; |
| 2795 | } |
| 2796 | else |
| 2797 | { |
| 2798 | h = sym_hashes [r_symndx - symtab_hdr->sh_info]; |
| 2799 | |
| 2800 | while (h->root.type == bfd_link_hash_indirect |
| 2801 | || h->root.type == bfd_link_hash_warning) |
| 2802 | h = (struct elf_link_hash_entry *) h->root.u.i.link; |
| 2803 | |
| 2804 | name = h->root.root.string; |
| 2805 | |
| 2806 | if ((h->root.type == bfd_link_hash_defined |
| 2807 | || h->root.type == bfd_link_hash_defweak)) |
| 2808 | { |
| 2809 | if (/* TLSMOFF forces local binding. */ |
| 2810 | r_type != R_FRV_TLSMOFF |
| 2811 | && ! FRVFDPIC_SYM_LOCAL (info, h)) |
| 2812 | { |
| 2813 | sec = NULL; |
| 2814 | relocation = 0; |
| 2815 | } |
| 2816 | else |
| 2817 | { |
| 2818 | sec = h->root.u.def.section; |
| 2819 | relocation = (h->root.u.def.value |
| 2820 | + sec->output_section->vma |
| 2821 | + sec->output_offset); |
| 2822 | } |
| 2823 | } |
| 2824 | else if (h->root.type == bfd_link_hash_undefweak) |
| 2825 | { |
| 2826 | relocation = 0; |
| 2827 | } |
| 2828 | else if (info->unresolved_syms_in_objects == RM_IGNORE |
| 2829 | && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT) |
| 2830 | relocation = 0; |
| 2831 | else |
| 2832 | { |
| 2833 | if (! ((*info->callbacks->undefined_symbol) |
| 2834 | (info, h->root.root.string, input_bfd, |
| 2835 | input_section, rel->r_offset, |
| 2836 | (info->unresolved_syms_in_objects == RM_GENERATE_ERROR |
| 2837 | || ELF_ST_VISIBILITY (h->other))))) |
| 2838 | return FALSE; |
| 2839 | relocation = 0; |
| 2840 | } |
| 2841 | osec = sec; |
| 2842 | } |
| 2843 | |
| 2844 | switch (r_type) |
| 2845 | { |
| 2846 | case R_FRV_LABEL24: |
| 2847 | case R_FRV_32: |
| 2848 | if (! IS_FDPIC (output_bfd)) |
| 2849 | goto non_fdpic; |
| 2850 | |
| 2851 | case R_FRV_GOT12: |
| 2852 | case R_FRV_GOTHI: |
| 2853 | case R_FRV_GOTLO: |
| 2854 | case R_FRV_FUNCDESC_GOT12: |
| 2855 | case R_FRV_FUNCDESC_GOTHI: |
| 2856 | case R_FRV_FUNCDESC_GOTLO: |
| 2857 | case R_FRV_GOTOFF12: |
| 2858 | case R_FRV_GOTOFFHI: |
| 2859 | case R_FRV_GOTOFFLO: |
| 2860 | case R_FRV_FUNCDESC_GOTOFF12: |
| 2861 | case R_FRV_FUNCDESC_GOTOFFHI: |
| 2862 | case R_FRV_FUNCDESC_GOTOFFLO: |
| 2863 | case R_FRV_FUNCDESC: |
| 2864 | case R_FRV_FUNCDESC_VALUE: |
| 2865 | case R_FRV_GETTLSOFF: |
| 2866 | case R_FRV_TLSDESC_VALUE: |
| 2867 | case R_FRV_GOTTLSDESC12: |
| 2868 | case R_FRV_GOTTLSDESCHI: |
| 2869 | case R_FRV_GOTTLSDESCLO: |
| 2870 | case R_FRV_TLSMOFF12: |
| 2871 | case R_FRV_TLSMOFFHI: |
| 2872 | case R_FRV_TLSMOFFLO: |
| 2873 | case R_FRV_GOTTLSOFF12: |
| 2874 | case R_FRV_GOTTLSOFFHI: |
| 2875 | case R_FRV_GOTTLSOFFLO: |
| 2876 | case R_FRV_TLSOFF: |
| 2877 | case R_FRV_TLSDESC_RELAX: |
| 2878 | case R_FRV_GETTLSOFF_RELAX: |
| 2879 | case R_FRV_TLSOFF_RELAX: |
| 2880 | case R_FRV_TLSMOFF: |
| 2881 | if (h != NULL) |
| 2882 | picrel = frvfdpic_relocs_info_for_global (frvfdpic_relocs_info |
| 2883 | (info), input_bfd, h, |
| 2884 | orig_addend, INSERT); |
| 2885 | else |
| 2886 | /* In order to find the entry we created before, we must |
| 2887 | use the original addend, not the one that may have been |
| 2888 | modified by _bfd_elf_rela_local_sym(). */ |
| 2889 | picrel = frvfdpic_relocs_info_for_local (frvfdpic_relocs_info |
| 2890 | (info), input_bfd, r_symndx, |
| 2891 | orig_addend, INSERT); |
| 2892 | if (! picrel) |
| 2893 | return FALSE; |
| 2894 | |
| 2895 | if (!_frvfdpic_emit_got_relocs_plt_entries (picrel, output_bfd, info, |
| 2896 | osec, sym, |
| 2897 | rel->r_addend)) |
| 2898 | { |
| 2899 | (*_bfd_error_handler) |
| 2900 | (_("%B(%A+0x%x): relocation to `%s+%x' may have caused the error above"), |
| 2901 | input_bfd, input_section, rel->r_offset, name, rel->r_addend); |
| 2902 | return FALSE; |
| 2903 | } |
| 2904 | |
| 2905 | break; |
| 2906 | |
| 2907 | default: |
| 2908 | non_fdpic: |
| 2909 | picrel = NULL; |
| 2910 | if (h && ! FRVFDPIC_SYM_LOCAL (info, h)) |
| 2911 | { |
| 2912 | info->callbacks->warning |
| 2913 | (info, _("relocation references symbol not defined in the module"), |
| 2914 | name, input_bfd, input_section, rel->r_offset); |
| 2915 | return FALSE; |
| 2916 | } |
| 2917 | break; |
| 2918 | } |
| 2919 | |
| 2920 | switch (r_type) |
| 2921 | { |
| 2922 | case R_FRV_GETTLSOFF: |
| 2923 | case R_FRV_TLSDESC_VALUE: |
| 2924 | case R_FRV_GOTTLSDESC12: |
| 2925 | case R_FRV_GOTTLSDESCHI: |
| 2926 | case R_FRV_GOTTLSDESCLO: |
| 2927 | case R_FRV_TLSMOFF12: |
| 2928 | case R_FRV_TLSMOFFHI: |
| 2929 | case R_FRV_TLSMOFFLO: |
| 2930 | case R_FRV_GOTTLSOFF12: |
| 2931 | case R_FRV_GOTTLSOFFHI: |
| 2932 | case R_FRV_GOTTLSOFFLO: |
| 2933 | case R_FRV_TLSOFF: |
| 2934 | case R_FRV_TLSDESC_RELAX: |
| 2935 | case R_FRV_GETTLSOFF_RELAX: |
| 2936 | case R_FRV_TLSOFF_RELAX: |
| 2937 | case R_FRV_TLSMOFF: |
| 2938 | if (sec && (bfd_is_abs_section (sec) || bfd_is_und_section (sec))) |
| 2939 | relocation += tls_biased_base (info); |
| 2940 | break; |
| 2941 | |
| 2942 | default: |
| 2943 | break; |
| 2944 | } |
| 2945 | |
| 2946 | /* Try to apply TLS relaxations. */ |
| 2947 | if (1) |
| 2948 | switch (r_type) |
| 2949 | { |
| 2950 | |
| 2951 | #define LOCAL_EXEC_P(info, picrel) \ |
| 2952 | ((info)->executable \ |
| 2953 | && (picrel->symndx != -1 || FRVFDPIC_SYM_LOCAL ((info), (picrel)->d.h))) |
| 2954 | #define INITIAL_EXEC_P(info, picrel) \ |
| 2955 | (((info)->executable || (info)->flags & DF_STATIC_TLS) \ |
| 2956 | && (picrel)->tlsoff_entry) |
| 2957 | |
| 2958 | #define IN_RANGE_FOR_OFST12_P(value) \ |
| 2959 | ((bfd_vma)((value) + 2048) < (bfd_vma)4096) |
| 2960 | #define IN_RANGE_FOR_SETLOS_P(value) \ |
| 2961 | ((bfd_vma)((value) + 32768) < (bfd_vma)65536) |
| 2962 | #define TLSMOFF_IN_RANGE_FOR_SETLOS_P(value, info) \ |
| 2963 | (IN_RANGE_FOR_SETLOS_P ((value) - tls_biased_base (info))) |
| 2964 | |
| 2965 | #define RELAX_GETTLSOFF_LOCAL_EXEC_P(info, picrel, value) \ |
| 2966 | (LOCAL_EXEC_P ((info), (picrel)) \ |
| 2967 | && TLSMOFF_IN_RANGE_FOR_SETLOS_P((value), (info))) |
| 2968 | #define RELAX_GETTLSOFF_INITIAL_EXEC_P(info, picrel) \ |
| 2969 | (INITIAL_EXEC_P ((info), (picrel)) \ |
| 2970 | && IN_RANGE_FOR_OFST12_P ((picrel)->tlsoff_entry)) |
| 2971 | |
| 2972 | #define RELAX_TLSDESC_LOCAL_EXEC_P(info, picrel, value) \ |
| 2973 | (LOCAL_EXEC_P ((info), (picrel))) |
| 2974 | #define RELAX_TLSDESC_INITIAL_EXEC_P(info, picrel) \ |
| 2975 | (INITIAL_EXEC_P ((info), (picrel))) |
| 2976 | |
| 2977 | #define RELAX_GOTTLSOFF_LOCAL_EXEC_P(info, picrel, value) \ |
| 2978 | (LOCAL_EXEC_P ((info), (picrel)) \ |
| 2979 | && TLSMOFF_IN_RANGE_FOR_SETLOS_P((value), (info))) |
| 2980 | |
| 2981 | case R_FRV_GETTLSOFF: |
| 2982 | insn = bfd_get_32 (input_bfd, contents + rel->r_offset); |
| 2983 | |
| 2984 | /* Is this a call instruction? */ |
| 2985 | if ((insn & (unsigned long)0x01fc0000) != 0x003c0000) |
| 2986 | { |
| 2987 | r = info->callbacks->warning |
| 2988 | (info, |
| 2989 | _("R_FRV_GETTLSOFF not applied to a call instruction"), |
| 2990 | name, input_bfd, input_section, rel->r_offset); |
| 2991 | return FALSE; |
| 2992 | } |
| 2993 | |
| 2994 | if (RELAX_GETTLSOFF_LOCAL_EXEC_P (info, picrel, |
| 2995 | relocation + rel->r_addend)) |
| 2996 | { |
| 2997 | /* Replace the call instruction (except the packing bit) |
| 2998 | with setlos #tlsmofflo(symbol+offset), gr9. */ |
| 2999 | insn &= (unsigned long)0x80000000; |
| 3000 | insn |= (unsigned long)0x12fc0000; |
| 3001 | bfd_put_32 (input_bfd, insn, contents + rel->r_offset); |
| 3002 | |
| 3003 | r_type = R_FRV_TLSMOFFLO; |
| 3004 | howto = elf32_frv_howto_table + r_type; |
| 3005 | rel->r_info = ELF32_R_INFO (r_symndx, r_type); |
| 3006 | } |
| 3007 | |
| 3008 | else if (RELAX_GETTLSOFF_INITIAL_EXEC_P (info, picrel)) |
| 3009 | { |
| 3010 | /* Replace the call instruction (except the packing bit) |
| 3011 | with ldi @(gr15, #gottlsoff12(symbol+addend)), gr9. */ |
| 3012 | insn &= (unsigned long)0x80000000; |
| 3013 | insn |= (unsigned long)0x12c8f000; |
| 3014 | bfd_put_32 (input_bfd, insn, contents + rel->r_offset); |
| 3015 | |
| 3016 | r_type = R_FRV_GOTTLSOFF12; |
| 3017 | howto = elf32_frv_howto_table + r_type; |
| 3018 | rel->r_info = ELF32_R_INFO (r_symndx, r_type); |
| 3019 | } |
| 3020 | |
| 3021 | break; |
| 3022 | |
| 3023 | case R_FRV_GOTTLSDESC12: |
| 3024 | insn = bfd_get_32 (input_bfd, contents + rel->r_offset); |
| 3025 | |
| 3026 | /* Is this an lddi instruction? */ |
| 3027 | if ((insn & (unsigned long)0x01fc0000) != 0x00cc0000) |
| 3028 | { |
| 3029 | r = info->callbacks->warning |
| 3030 | (info, |
| 3031 | _("R_FRV_GOTTLSDESC12 not applied to an lddi instruction"), |
| 3032 | name, input_bfd, input_section, rel->r_offset); |
| 3033 | return FALSE; |
| 3034 | } |
| 3035 | |
| 3036 | if (RELAX_TLSDESC_LOCAL_EXEC_P (info, picrel, |
| 3037 | relocation + rel->r_addend) |
| 3038 | && TLSMOFF_IN_RANGE_FOR_SETLOS_P (relocation + rel->r_addend, |
| 3039 | info)) |
| 3040 | { |
| 3041 | /* Replace lddi @(grB, #gottlsdesc12(symbol+offset), grC |
| 3042 | with setlos #tlsmofflo(symbol+offset), gr<C+1>. |
| 3043 | Preserve the packing bit. */ |
| 3044 | insn = (insn & (unsigned long)0x80000000) |
| 3045 | | ((insn + (unsigned long)0x02000000) |
| 3046 | & (unsigned long)0x7e000000); |
| 3047 | insn |= (unsigned long)0x00fc0000; |
| 3048 | bfd_put_32 (input_bfd, insn, contents + rel->r_offset); |
| 3049 | |
| 3050 | r_type = R_FRV_TLSMOFFLO; |
| 3051 | howto = elf32_frv_howto_table + r_type; |
| 3052 | rel->r_info = ELF32_R_INFO (r_symndx, r_type); |
| 3053 | } |
| 3054 | |
| 3055 | else if (RELAX_TLSDESC_LOCAL_EXEC_P (info, picrel, |
| 3056 | relocation + rel->r_addend)) |
| 3057 | { |
| 3058 | /* Replace lddi @(grB, #gottlsdesc12(symbol+offset), grC |
| 3059 | with sethi #tlsmoffhi(symbol+offset), gr<C+1>. |
| 3060 | Preserve the packing bit. */ |
| 3061 | insn = (insn & (unsigned long)0x80000000) |
| 3062 | | ((insn + (unsigned long)0x02000000) |
| 3063 | & (unsigned long)0x7e000000); |
| 3064 | insn |= (unsigned long)0x00f80000; |
| 3065 | bfd_put_32 (input_bfd, insn, contents + rel->r_offset); |
| 3066 | |
| 3067 | r_type = R_FRV_TLSMOFFHI; |
| 3068 | howto = elf32_frv_howto_table + r_type; |
| 3069 | rel->r_info = ELF32_R_INFO (r_symndx, r_type); |
| 3070 | } |
| 3071 | |
| 3072 | else if (RELAX_TLSDESC_INITIAL_EXEC_P (info, picrel)) |
| 3073 | { |
| 3074 | /* Replace lddi @(grB, #gottlsdesc12(symbol+offset), grC |
| 3075 | with ldi @(grB, #gottlsoff12(symbol+offset), |
| 3076 | gr<C+1>. Preserve the packing bit. If gottlsoff12 |
| 3077 | overflows, we'll error out, but that's sort-of ok, |
| 3078 | since we'd started with gottlsdesc12, that's actually |
| 3079 | more demanding. Compiling with -fPIE instead of |
| 3080 | -fpie would fix it; linking with --relax should fix |
| 3081 | it as well. */ |
| 3082 | insn = (insn & (unsigned long)0x80cbf000) |
| 3083 | | ((insn + (unsigned long)0x02000000) |
| 3084 | & (unsigned long)0x7e000000); |
| 3085 | bfd_put_32 (input_bfd, insn, contents + rel->r_offset); |
| 3086 | |
| 3087 | r_type = R_FRV_GOTTLSOFF12; |
| 3088 | howto = elf32_frv_howto_table + r_type; |
| 3089 | rel->r_info = ELF32_R_INFO (r_symndx, r_type); |
| 3090 | } |
| 3091 | |
| 3092 | break; |
| 3093 | |
| 3094 | case R_FRV_GOTTLSDESCHI: |
| 3095 | insn = bfd_get_32 (input_bfd, contents + rel->r_offset); |
| 3096 | |
| 3097 | /* Is this a sethi instruction? */ |
| 3098 | if ((insn & (unsigned long)0x01ff0000) != 0x00f80000) |
| 3099 | { |
| 3100 | r = info->callbacks->warning |
| 3101 | (info, |
| 3102 | _("R_FRV_GOTTLSDESCHI not applied to a sethi instruction"), |
| 3103 | name, input_bfd, input_section, rel->r_offset); |
| 3104 | return FALSE; |
| 3105 | } |
| 3106 | |
| 3107 | if (RELAX_TLSDESC_LOCAL_EXEC_P (info, picrel, |
| 3108 | relocation + rel->r_addend) |
| 3109 | || (RELAX_TLSDESC_INITIAL_EXEC_P (info, picrel) |
| 3110 | && IN_RANGE_FOR_SETLOS_P (picrel->tlsoff_entry))) |
| 3111 | { |
| 3112 | /* Replace sethi with a nop. Preserve the packing bit. */ |
| 3113 | insn &= (unsigned long)0x80000000; |
| 3114 | insn |= (unsigned long)0x00880000; |
| 3115 | bfd_put_32 (input_bfd, insn, contents + rel->r_offset); |
| 3116 | |
| 3117 | /* Nothing to relocate. */ |
| 3118 | continue; |
| 3119 | } |
| 3120 | |
| 3121 | else if (RELAX_TLSDESC_INITIAL_EXEC_P (info, picrel)) |
| 3122 | { |
| 3123 | /* Simply decay GOTTLSDESC to GOTTLSOFF. */ |
| 3124 | r_type = R_FRV_GOTTLSOFFHI; |
| 3125 | howto = elf32_frv_howto_table + r_type; |
| 3126 | rel->r_info = ELF32_R_INFO (r_symndx, r_type); |
| 3127 | } |
| 3128 | |
| 3129 | break; |
| 3130 | |
| 3131 | case R_FRV_GOTTLSDESCLO: |
| 3132 | insn = bfd_get_32 (input_bfd, contents + rel->r_offset); |
| 3133 | |
| 3134 | /* Is this a setlo or setlos instruction? */ |
| 3135 | if ((insn & (unsigned long)0x01f70000) != 0x00f40000) |
| 3136 | { |
| 3137 | r = info->callbacks->warning |
| 3138 | (info, |
| 3139 | _("R_FRV_GOTTLSDESCLO" |
| 3140 | " not applied to a setlo or setlos instruction"), |
| 3141 | name, input_bfd, input_section, rel->r_offset); |
| 3142 | return FALSE; |
| 3143 | } |
| 3144 | |
| 3145 | if (RELAX_TLSDESC_LOCAL_EXEC_P (info, picrel, |
| 3146 | relocation + rel->r_addend) |
| 3147 | || (RELAX_TLSDESC_INITIAL_EXEC_P (info, picrel) |
| 3148 | && IN_RANGE_FOR_OFST12_P (picrel->tlsoff_entry))) |
| 3149 | { |
| 3150 | /* Replace setlo/setlos with a nop. Preserve the |
| 3151 | packing bit. */ |
| 3152 | insn &= (unsigned long)0x80000000; |
| 3153 | insn |= (unsigned long)0x00880000; |
| 3154 | bfd_put_32 (input_bfd, insn, contents + rel->r_offset); |
| 3155 | |
| 3156 | /* Nothing to relocate. */ |
| 3157 | continue; |
| 3158 | } |
| 3159 | |
| 3160 | else if (RELAX_TLSDESC_INITIAL_EXEC_P (info, picrel)) |
| 3161 | { |
| 3162 | /* If the corresponding sethi (if it exists) decayed |
| 3163 | to a nop, make sure this becomes (or already is) a |
| 3164 | setlos, not setlo. */ |
| 3165 | if (IN_RANGE_FOR_SETLOS_P (picrel->tlsoff_entry)) |
| 3166 | { |
| 3167 | insn |= (unsigned long)0x00080000; |
| 3168 | bfd_put_32 (input_bfd, insn, contents + rel->r_offset); |
| 3169 | } |
| 3170 | |
| 3171 | /* Simply decay GOTTLSDESC to GOTTLSOFF. */ |
| 3172 | r_type = R_FRV_GOTTLSOFFLO; |
| 3173 | howto = elf32_frv_howto_table + r_type; |
| 3174 | rel->r_info = ELF32_R_INFO (r_symndx, r_type); |
| 3175 | } |
| 3176 | |
| 3177 | break; |
| 3178 | |
| 3179 | case R_FRV_TLSDESC_RELAX: |
| 3180 | insn = bfd_get_32 (input_bfd, contents + rel->r_offset); |
| 3181 | |
| 3182 | /* Is this an ldd instruction? */ |
| 3183 | if ((insn & (unsigned long)0x01fc0fc0) != 0x00080140) |
| 3184 | { |
| 3185 | r = info->callbacks->warning |
| 3186 | (info, |
| 3187 | _("R_FRV_TLSDESC_RELAX not applied to an ldd instruction"), |
| 3188 | name, input_bfd, input_section, rel->r_offset); |
| 3189 | return FALSE; |
| 3190 | } |
| 3191 | |
| 3192 | if (RELAX_TLSDESC_LOCAL_EXEC_P (info, picrel, |
| 3193 | relocation + rel->r_addend) |
| 3194 | && TLSMOFF_IN_RANGE_FOR_SETLOS_P (relocation + rel->r_addend, |
| 3195 | info)) |
| 3196 | { |
| 3197 | /* Replace ldd #tlsdesc(symbol+offset)@(grB, grA), grC |
| 3198 | with setlos #tlsmofflo(symbol+offset), gr<C+1>. |
| 3199 | Preserve the packing bit. */ |
| 3200 | insn = (insn & (unsigned long)0x80000000) |
| 3201 | | ((insn + (unsigned long)0x02000000) |
| 3202 | & (unsigned long)0x7e000000); |
| 3203 | insn |= (unsigned long)0x00fc0000; |
| 3204 | bfd_put_32 (input_bfd, insn, contents + rel->r_offset); |
| 3205 | |
| 3206 | r_type = R_FRV_TLSMOFFLO; |
| 3207 | howto = elf32_frv_howto_table + r_type; |
| 3208 | rel->r_info = ELF32_R_INFO (r_symndx, r_type); |
| 3209 | } |
| 3210 | |
| 3211 | else if (RELAX_TLSDESC_LOCAL_EXEC_P (info, picrel, |
| 3212 | relocation + rel->r_addend)) |
| 3213 | { |
| 3214 | /* Replace ldd #tlsdesc(symbol+offset)@(grB, grA), grC |
| 3215 | with sethi #tlsmoffhi(symbol+offset), gr<C+1>. |
| 3216 | Preserve the packing bit. */ |
| 3217 | insn = (insn & (unsigned long)0x80000000) |
| 3218 | | ((insn + (unsigned long)0x02000000) |
| 3219 | & (unsigned long)0x7e000000); |
| 3220 | insn |= (unsigned long)0x00f80000; |
| 3221 | bfd_put_32 (input_bfd, insn, contents + rel->r_offset); |
| 3222 | |
| 3223 | r_type = R_FRV_TLSMOFFHI; |
| 3224 | howto = elf32_frv_howto_table + r_type; |
| 3225 | rel->r_info = ELF32_R_INFO (r_symndx, r_type); |
| 3226 | } |
| 3227 | |
| 3228 | else if (RELAX_TLSDESC_INITIAL_EXEC_P (info, picrel) |
| 3229 | && IN_RANGE_FOR_OFST12_P (picrel->tlsoff_entry)) |
| 3230 | { |
| 3231 | /* Replace ldd #tlsdesc(symbol+offset)@(grB, grA), grC |
| 3232 | with ldi @(grB, #gottlsoff12(symbol+offset), gr<C+1>. |
| 3233 | Preserve the packing bit. */ |
| 3234 | insn = (insn & (unsigned long)0x8003f000) |
| 3235 | | (unsigned long)0x00c80000 |
| 3236 | | ((insn + (unsigned long)0x02000000) |
| 3237 | & (unsigned long)0x7e000000); |
| 3238 | bfd_put_32 (input_bfd, insn, contents + rel->r_offset); |
| 3239 | |
| 3240 | r_type = R_FRV_GOTTLSOFF12; |
| 3241 | howto = elf32_frv_howto_table + r_type; |
| 3242 | rel->r_info = ELF32_R_INFO (r_symndx, r_type); |
| 3243 | } |
| 3244 | |
| 3245 | else if (RELAX_TLSDESC_INITIAL_EXEC_P (info, picrel)) |
| 3246 | { |
| 3247 | /* Replace ldd #tlsdesc(symbol+offset)@(grB, grA), grC |
| 3248 | with ld #tlsoff(symbol+offset)@(grB, grA), gr<C+1>. |
| 3249 | Preserve the packing bit. */ |
| 3250 | insn = (insn & (unsigned long)0x81ffffbf) |
| 3251 | | ((insn + (unsigned long)0x02000000) |
| 3252 | & (unsigned long)0x7e000000); |
| 3253 | bfd_put_32 (input_bfd, insn, contents + rel->r_offset); |
| 3254 | |
| 3255 | /* #tlsoff(symbol+offset) is just a relaxation |
| 3256 | annotation, so there's nothing left to |
| 3257 | relocate. */ |
| 3258 | continue; |
| 3259 | } |
| 3260 | |
| 3261 | break; |
| 3262 | |
| 3263 | case R_FRV_GETTLSOFF_RELAX: |
| 3264 | insn = bfd_get_32 (input_bfd, contents + rel->r_offset); |
| 3265 | |
| 3266 | /* Is this a calll or callil instruction? */ |
| 3267 | if ((insn & (unsigned long)0x7ff80fc0) != 0x02300000) |
| 3268 | { |
| 3269 | r = info->callbacks->warning |
| 3270 | (info, |
| 3271 | _("R_FRV_GETTLSOFF_RELAX" |
| 3272 | " not applied to a calll instruction"), |
| 3273 | name, input_bfd, input_section, rel->r_offset); |
| 3274 | return FALSE; |
| 3275 | } |
| 3276 | |
| 3277 | if (RELAX_TLSDESC_LOCAL_EXEC_P (info, picrel, |
| 3278 | relocation + rel->r_addend) |
| 3279 | && TLSMOFF_IN_RANGE_FOR_SETLOS_P (relocation + rel->r_addend, |
| 3280 | info)) |
| 3281 | { |
| 3282 | /* Replace calll with a nop. Preserve the packing bit. */ |
| 3283 | insn &= (unsigned long)0x80000000; |
| 3284 | insn |= (unsigned long)0x00880000; |
| 3285 | bfd_put_32 (input_bfd, insn, contents + rel->r_offset); |
| 3286 | |
| 3287 | /* Nothing to relocate. */ |
| 3288 | continue; |
| 3289 | } |
| 3290 | |
| 3291 | else if (RELAX_TLSDESC_LOCAL_EXEC_P (info, picrel, |
| 3292 | relocation + rel->r_addend)) |
| 3293 | { |
| 3294 | /* Replace calll with setlo #tlsmofflo(symbol+offset), gr9. |
| 3295 | Preserve the packing bit. */ |
| 3296 | insn &= (unsigned long)0x80000000; |
| 3297 | insn |= (unsigned long)0x12f40000; |
| 3298 | bfd_put_32 (input_bfd, insn, contents + rel->r_offset); |
| 3299 | |
| 3300 | r_type = R_FRV_TLSMOFFLO; |
| 3301 | howto = elf32_frv_howto_table + r_type; |
| 3302 | rel->r_info = ELF32_R_INFO (r_symndx, r_type); |
| 3303 | } |
| 3304 | |
| 3305 | else if (RELAX_TLSDESC_INITIAL_EXEC_P (info, picrel)) |
| 3306 | { |
| 3307 | /* Replace calll with a nop. Preserve the packing bit. */ |
| 3308 | insn &= (unsigned long)0x80000000; |
| 3309 | insn |= (unsigned long)0x00880000; |
| 3310 | bfd_put_32 (input_bfd, insn, contents + rel->r_offset); |
| 3311 | |
| 3312 | /* Nothing to relocate. */ |
| 3313 | continue; |
| 3314 | } |
| 3315 | |
| 3316 | break; |
| 3317 | |
| 3318 | case R_FRV_GOTTLSOFF12: |
| 3319 | insn = bfd_get_32 (input_bfd, contents + rel->r_offset); |
| 3320 | |
| 3321 | /* Is this an ldi instruction? */ |
| 3322 | if ((insn & (unsigned long)0x01fc0000) != 0x00c80000) |
| 3323 | { |
| 3324 | r = info->callbacks->warning |
| 3325 | (info, |
| 3326 | _("R_FRV_GOTTLSOFF12 not applied to an ldi instruction"), |
| 3327 | name, input_bfd, input_section, rel->r_offset); |
| 3328 | return FALSE; |
| 3329 | } |
| 3330 | |
| 3331 | if (RELAX_GOTTLSOFF_LOCAL_EXEC_P (info, picrel, |
| 3332 | relocation + rel->r_addend)) |
| 3333 | { |
| 3334 | /* Replace ldi @(grB, #gottlsoff12(symbol+offset), grC |
| 3335 | with setlos #tlsmofflo(symbol+offset), grC. |
| 3336 | Preserve the packing bit. */ |
| 3337 | insn &= (unsigned long)0xfe000000; |
| 3338 | insn |= (unsigned long)0x00fc0000; |
| 3339 | bfd_put_32 (input_bfd, insn, contents + rel->r_offset); |
| 3340 | |
| 3341 | r_type = R_FRV_TLSMOFFLO; |
| 3342 | howto = elf32_frv_howto_table + r_type; |
| 3343 | rel->r_info = ELF32_R_INFO (r_symndx, r_type); |
| 3344 | } |
| 3345 | |
| 3346 | break; |
| 3347 | |
| 3348 | case R_FRV_GOTTLSOFFHI: |
| 3349 | insn = bfd_get_32 (input_bfd, contents + rel->r_offset); |
| 3350 | |
| 3351 | /* Is this a sethi instruction? */ |
| 3352 | if ((insn & (unsigned long)0x01ff0000) != 0x00f80000) |
| 3353 | { |
| 3354 | r = info->callbacks->warning |
| 3355 | (info, |
| 3356 | _("R_FRV_GOTTLSOFFHI not applied to a sethi instruction"), |
| 3357 | name, input_bfd, input_section, rel->r_offset); |
| 3358 | return FALSE; |
| 3359 | } |
| 3360 | |
| 3361 | if (RELAX_GOTTLSOFF_LOCAL_EXEC_P (info, picrel, |
| 3362 | relocation + rel->r_addend) |
| 3363 | || (RELAX_TLSDESC_INITIAL_EXEC_P (info, picrel) |
| 3364 | && IN_RANGE_FOR_OFST12_P (picrel->tlsoff_entry))) |
| 3365 | { |
| 3366 | /* Replace sethi with a nop. Preserve the packing bit. */ |
| 3367 | insn &= (unsigned long)0x80000000; |
| 3368 | insn |= (unsigned long)0x00880000; |
| 3369 | bfd_put_32 (input_bfd, insn, contents + rel->r_offset); |
| 3370 | |
| 3371 | /* Nothing to relocate. */ |
| 3372 | continue; |
| 3373 | } |
| 3374 | |
| 3375 | break; |
| 3376 | |
| 3377 | case R_FRV_GOTTLSOFFLO: |
| 3378 | insn = bfd_get_32 (input_bfd, contents + rel->r_offset); |
| 3379 | |
| 3380 | /* Is this a setlo or setlos instruction? */ |
| 3381 | if ((insn & (unsigned long)0x01f70000) != 0x00f40000) |
| 3382 | { |
| 3383 | r = info->callbacks->warning |
| 3384 | (info, |
| 3385 | _("R_FRV_GOTTLSOFFLO" |
| 3386 | " not applied to a setlo or setlos instruction"), |
| 3387 | name, input_bfd, input_section, rel->r_offset); |
| 3388 | return FALSE; |
| 3389 | } |
| 3390 | |
| 3391 | if (RELAX_GOTTLSOFF_LOCAL_EXEC_P (info, picrel, |
| 3392 | relocation + rel->r_addend) |
| 3393 | || (RELAX_TLSDESC_INITIAL_EXEC_P (info, picrel) |
| 3394 | && IN_RANGE_FOR_OFST12_P (picrel->tlsoff_entry))) |
| 3395 | { |
| 3396 | /* Replace setlo/setlos with a nop. Preserve the |
| 3397 | packing bit. */ |
| 3398 | insn &= (unsigned long)0x80000000; |
| 3399 | insn |= (unsigned long)0x00880000; |
| 3400 | bfd_put_32 (input_bfd, insn, contents + rel->r_offset); |
| 3401 | |
| 3402 | /* Nothing to relocate. */ |
| 3403 | continue; |
| 3404 | } |
| 3405 | |
| 3406 | break; |
| 3407 | |
| 3408 | case R_FRV_TLSOFF_RELAX: |
| 3409 | insn = bfd_get_32 (input_bfd, contents + rel->r_offset); |
| 3410 | |
| 3411 | /* Is this an ld instruction? */ |
| 3412 | if ((insn & (unsigned long)0x01fc0fc0) != 0x00080100) |
| 3413 | { |
| 3414 | r = info->callbacks->warning |
| 3415 | (info, |
| 3416 | _("R_FRV_TLSOFF_RELAX not applied to an ld instruction"), |
| 3417 | name, input_bfd, input_section, rel->r_offset); |
| 3418 | return FALSE; |
| 3419 | } |
| 3420 | |
| 3421 | if (RELAX_GOTTLSOFF_LOCAL_EXEC_P (info, picrel, |
| 3422 | relocation + rel->r_addend)) |
| 3423 | { |
| 3424 | /* Replace ld #gottlsoff(symbol+offset)@(grB, grA), grC |
| 3425 | with setlos #tlsmofflo(symbol+offset), grC. |
| 3426 | Preserve the packing bit. */ |
| 3427 | insn &= (unsigned long)0xfe000000; |
| 3428 | insn |= (unsigned long)0x00fc0000; |
| 3429 | bfd_put_32 (input_bfd, insn, contents + rel->r_offset); |
| 3430 | |
| 3431 | r_type = R_FRV_TLSMOFFLO; |
| 3432 | howto = elf32_frv_howto_table + r_type; |
| 3433 | rel->r_info = ELF32_R_INFO (r_symndx, r_type); |
| 3434 | } |
| 3435 | |
| 3436 | else if (RELAX_TLSDESC_INITIAL_EXEC_P (info, picrel) |
| 3437 | && IN_RANGE_FOR_OFST12_P (picrel->tlsoff_entry)) |
| 3438 | { |
| 3439 | /* Replace ld #tlsoff(symbol+offset)@(grB, grA), grC |
| 3440 | with ldi @(grB, #gottlsoff12(symbol+offset), grC. |
| 3441 | Preserve the packing bit. */ |
| 3442 | insn = (insn & (unsigned long)0xfe03f000) |
| 3443 | | (unsigned long)0x00c80000;; |
| 3444 | bfd_put_32 (input_bfd, insn, contents + rel->r_offset); |
| 3445 | |
| 3446 | r_type = R_FRV_GOTTLSOFF12; |
| 3447 | howto = elf32_frv_howto_table + r_type; |
| 3448 | rel->r_info = ELF32_R_INFO (r_symndx, r_type); |
| 3449 | } |
| 3450 | |
| 3451 | break; |
| 3452 | |
| 3453 | case R_FRV_TLSMOFFHI: |
| 3454 | insn = bfd_get_32 (input_bfd, contents + rel->r_offset); |
| 3455 | |
| 3456 | /* Is this a sethi instruction? */ |
| 3457 | if ((insn & (unsigned long)0x01ff0000) != 0x00f80000) |
| 3458 | { |
| 3459 | r = info->callbacks->warning |
| 3460 | (info, |
| 3461 | _("R_FRV_TLSMOFFHI not applied to a sethi instruction"), |
| 3462 | name, input_bfd, input_section, rel->r_offset); |
| 3463 | return FALSE; |
| 3464 | } |
| 3465 | |
| 3466 | if (TLSMOFF_IN_RANGE_FOR_SETLOS_P (relocation + rel->r_addend, |
| 3467 | info)) |
| 3468 | { |
| 3469 | /* Replace sethi with a nop. Preserve the packing bit. */ |
| 3470 | insn &= (unsigned long)0x80000000; |
| 3471 | insn |= (unsigned long)0x00880000; |
| 3472 | bfd_put_32 (input_bfd, insn, contents + rel->r_offset); |
| 3473 | |
| 3474 | /* Nothing to relocate. */ |
| 3475 | continue; |
| 3476 | } |
| 3477 | |
| 3478 | break; |
| 3479 | |
| 3480 | case R_FRV_TLSMOFFLO: |
| 3481 | insn = bfd_get_32 (input_bfd, contents + rel->r_offset); |
| 3482 | |
| 3483 | /* Is this a setlo or setlos instruction? */ |
| 3484 | if ((insn & (unsigned long)0x01f70000) != 0x00f40000) |
| 3485 | { |
| 3486 | r = info->callbacks->warning |
| 3487 | (info, |
| 3488 | _("R_FRV_TLSMOFFLO" |
| 3489 | " not applied to a setlo or setlos instruction"), |
| 3490 | name, input_bfd, input_section, rel->r_offset); |
| 3491 | return FALSE; |
| 3492 | } |
| 3493 | |
| 3494 | if (TLSMOFF_IN_RANGE_FOR_SETLOS_P (relocation + rel->r_addend, |
| 3495 | info)) |
| 3496 | /* If the corresponding sethi (if it exists) decayed |
| 3497 | to a nop, make sure this becomes (or already is) a |
| 3498 | setlos, not setlo. */ |
| 3499 | { |
| 3500 | insn |= (unsigned long)0x00080000; |
| 3501 | bfd_put_32 (input_bfd, insn, contents + rel->r_offset); |
| 3502 | } |
| 3503 | |
| 3504 | break; |
| 3505 | |
| 3506 | /* |
| 3507 | There's nothing to relax in these: |
| 3508 | R_FRV_TLSDESC_VALUE |
| 3509 | R_FRV_TLSOFF |
| 3510 | R_FRV_TLSMOFF12 |
| 3511 | R_FRV_TLSMOFFHI |
| 3512 | R_FRV_TLSMOFFLO |
| 3513 | R_FRV_TLSMOFF |
| 3514 | */ |
| 3515 | |
| 3516 | default: |
| 3517 | break; |
| 3518 | } |
| 3519 | |
| 3520 | switch (r_type) |
| 3521 | { |
| 3522 | case R_FRV_LABEL24: |
| 3523 | check_segment[0] = isec_segment; |
| 3524 | if (! IS_FDPIC (output_bfd)) |
| 3525 | check_segment[1] = isec_segment; |
| 3526 | else if (picrel->plt) |
| 3527 | { |
| 3528 | relocation = frvfdpic_plt_section (info)->output_section->vma |
| 3529 | + frvfdpic_plt_section (info)->output_offset |
| 3530 | + picrel->plt_entry; |
| 3531 | check_segment[1] = plt_segment; |
| 3532 | } |
| 3533 | /* We don't want to warn on calls to undefined weak symbols, |
| 3534 | as calls to them must be protected by non-NULL tests |
| 3535 | anyway, and unprotected calls would invoke undefined |
| 3536 | behavior. */ |
| 3537 | else if (picrel->symndx == -1 |
| 3538 | && picrel->d.h->root.type == bfd_link_hash_undefweak) |
| 3539 | check_segment[1] = check_segment[0]; |
| 3540 | else |
| 3541 | check_segment[1] = sec |
| 3542 | ? _frvfdpic_osec_to_segment (output_bfd, sec->output_section) |
| 3543 | : (unsigned)-1; |
| 3544 | break; |
| 3545 | |
| 3546 | case R_FRV_GOT12: |
| 3547 | case R_FRV_GOTHI: |
| 3548 | case R_FRV_GOTLO: |
| 3549 | relocation = picrel->got_entry; |
| 3550 | check_segment[0] = check_segment[1] = got_segment; |
| 3551 | break; |
| 3552 | |
| 3553 | case R_FRV_FUNCDESC_GOT12: |
| 3554 | case R_FRV_FUNCDESC_GOTHI: |
| 3555 | case R_FRV_FUNCDESC_GOTLO: |
| 3556 | relocation = picrel->fdgot_entry; |
| 3557 | check_segment[0] = check_segment[1] = got_segment; |
| 3558 | break; |
| 3559 | |
| 3560 | case R_FRV_GOTOFFHI: |
| 3561 | case R_FRV_GOTOFF12: |
| 3562 | case R_FRV_GOTOFFLO: |
| 3563 | relocation -= frvfdpic_got_section (info)->output_section->vma |
| 3564 | + frvfdpic_got_section (info)->output_offset |
| 3565 | + frvfdpic_got_initial_offset (info); |
| 3566 | check_segment[0] = got_segment; |
| 3567 | check_segment[1] = sec |
| 3568 | ? _frvfdpic_osec_to_segment (output_bfd, sec->output_section) |
| 3569 | : (unsigned)-1; |
| 3570 | break; |
| 3571 | |
| 3572 | case R_FRV_FUNCDESC_GOTOFF12: |
| 3573 | case R_FRV_FUNCDESC_GOTOFFHI: |
| 3574 | case R_FRV_FUNCDESC_GOTOFFLO: |
| 3575 | relocation = picrel->fd_entry; |
| 3576 | check_segment[0] = check_segment[1] = got_segment; |
| 3577 | break; |
| 3578 | |
| 3579 | case R_FRV_FUNCDESC: |
| 3580 | { |
| 3581 | int dynindx; |
| 3582 | bfd_vma addend = rel->r_addend; |
| 3583 | |
| 3584 | if (! (h && h->root.type == bfd_link_hash_undefweak |
| 3585 | && FRVFDPIC_SYM_LOCAL (info, h))) |
| 3586 | { |
| 3587 | /* If the symbol is dynamic and there may be dynamic |
| 3588 | symbol resolution because we are or are linked with a |
| 3589 | shared library, emit a FUNCDESC relocation such that |
| 3590 | the dynamic linker will allocate the function |
| 3591 | descriptor. If the symbol needs a non-local function |
| 3592 | descriptor but binds locally (e.g., its visibility is |
| 3593 | protected, emit a dynamic relocation decayed to |
| 3594 | section+offset. */ |
| 3595 | if (h && ! FRVFDPIC_FUNCDESC_LOCAL (info, h) |
| 3596 | && FRVFDPIC_SYM_LOCAL (info, h) |
| 3597 | && !(info->executable && !info->pie)) |
| 3598 | { |
| 3599 | dynindx = elf_section_data (h->root.u.def.section |
| 3600 | ->output_section)->dynindx; |
| 3601 | addend += h->root.u.def.section->output_offset |
| 3602 | + h->root.u.def.value; |
| 3603 | } |
| 3604 | else if (h && ! FRVFDPIC_FUNCDESC_LOCAL (info, h)) |
| 3605 | { |
| 3606 | if (addend) |
| 3607 | { |
| 3608 | info->callbacks->warning |
| 3609 | (info, _("R_FRV_FUNCDESC references dynamic symbol with nonzero addend"), |
| 3610 | name, input_bfd, input_section, rel->r_offset); |
| 3611 | return FALSE; |
| 3612 | } |
| 3613 | dynindx = h->dynindx; |
| 3614 | } |
| 3615 | else |
| 3616 | { |
| 3617 | /* Otherwise, we know we have a private function |
| 3618 | descriptor, so reference it directly. */ |
| 3619 | BFD_ASSERT (picrel->privfd); |
| 3620 | r_type = R_FRV_32; |
| 3621 | dynindx = elf_section_data (frvfdpic_got_section (info) |
| 3622 | ->output_section)->dynindx; |
| 3623 | addend = frvfdpic_got_section (info)->output_offset |
| 3624 | + frvfdpic_got_initial_offset (info) |
| 3625 | + picrel->fd_entry; |
| 3626 | } |
| 3627 | |
| 3628 | /* If there is room for dynamic symbol resolution, emit |
| 3629 | the dynamic relocation. However, if we're linking an |
| 3630 | executable at a fixed location, we won't have emitted a |
| 3631 | dynamic symbol entry for the got section, so idx will |
| 3632 | be zero, which means we can and should compute the |
| 3633 | address of the private descriptor ourselves. */ |
| 3634 | if (info->executable && !info->pie |
| 3635 | && (!h || FRVFDPIC_FUNCDESC_LOCAL (info, h))) |
| 3636 | { |
| 3637 | addend += frvfdpic_got_section (info)->output_section->vma; |
| 3638 | if ((bfd_get_section_flags (output_bfd, |
| 3639 | input_section->output_section) |
| 3640 | & (SEC_ALLOC | SEC_LOAD)) == (SEC_ALLOC | SEC_LOAD)) |
| 3641 | { |
| 3642 | if (_frvfdpic_osec_readonly_p (output_bfd, |
| 3643 | input_section |
| 3644 | ->output_section)) |
| 3645 | { |
| 3646 | info->callbacks->warning |
| 3647 | (info, |
| 3648 | _("cannot emit fixups in read-only section"), |
| 3649 | name, input_bfd, input_section, rel->r_offset); |
| 3650 | return FALSE; |
| 3651 | } |
| 3652 | _frvfdpic_add_rofixup (output_bfd, |
| 3653 | frvfdpic_gotfixup_section |
| 3654 | (info), |
| 3655 | _bfd_elf_section_offset |
| 3656 | (output_bfd, info, |
| 3657 | input_section, rel->r_offset) |
| 3658 | + input_section |
| 3659 | ->output_section->vma |
| 3660 | + input_section->output_offset, |
| 3661 | picrel); |
| 3662 | } |
| 3663 | } |
| 3664 | else if ((bfd_get_section_flags (output_bfd, |
| 3665 | input_section->output_section) |
| 3666 | & (SEC_ALLOC | SEC_LOAD)) == (SEC_ALLOC | SEC_LOAD)) |
| 3667 | { |
| 3668 | if (_frvfdpic_osec_readonly_p (output_bfd, |
| 3669 | input_section |
| 3670 | ->output_section)) |
| 3671 | { |
| 3672 | info->callbacks->warning |
| 3673 | (info, |
| 3674 | _("cannot emit dynamic relocations in read-only section"), |
| 3675 | name, input_bfd, input_section, rel->r_offset); |
| 3676 | return FALSE; |
| 3677 | } |
| 3678 | _frvfdpic_add_dyn_reloc (output_bfd, |
| 3679 | frvfdpic_gotrel_section (info), |
| 3680 | _bfd_elf_section_offset |
| 3681 | (output_bfd, info, |
| 3682 | input_section, rel->r_offset) |
| 3683 | + input_section |
| 3684 | ->output_section->vma |
| 3685 | + input_section->output_offset, |
| 3686 | r_type, dynindx, addend, picrel); |
| 3687 | } |
| 3688 | else |
| 3689 | addend += frvfdpic_got_section (info)->output_section->vma; |
| 3690 | } |
| 3691 | |
| 3692 | /* We want the addend in-place because dynamic |
| 3693 | relocations are REL. Setting relocation to it should |
| 3694 | arrange for it to be installed. */ |
| 3695 | relocation = addend - rel->r_addend; |
| 3696 | } |
| 3697 | check_segment[0] = check_segment[1] = got_segment; |
| 3698 | break; |
| 3699 | |
| 3700 | case R_FRV_32: |
| 3701 | if (! IS_FDPIC (output_bfd)) |
| 3702 | { |
| 3703 | check_segment[0] = check_segment[1] = -1; |
| 3704 | break; |
| 3705 | } |
| 3706 | /* Fall through. */ |
| 3707 | case R_FRV_FUNCDESC_VALUE: |
| 3708 | { |
| 3709 | int dynindx; |
| 3710 | bfd_vma addend = rel->r_addend; |
| 3711 | |
| 3712 | /* If the symbol is dynamic but binds locally, use |
| 3713 | section+offset. */ |
| 3714 | if (h && ! FRVFDPIC_SYM_LOCAL (info, h)) |
| 3715 | { |
| 3716 | if (addend && r_type == R_FRV_FUNCDESC_VALUE) |
| 3717 | { |
| 3718 | info->callbacks->warning |
| 3719 | (info, _("R_FRV_FUNCDESC_VALUE references dynamic symbol with nonzero addend"), |
| 3720 | name, input_bfd, input_section, rel->r_offset); |
| 3721 | return FALSE; |
| 3722 | } |
| 3723 | dynindx = h->dynindx; |
| 3724 | } |
| 3725 | else |
| 3726 | { |
| 3727 | if (h) |
| 3728 | addend += h->root.u.def.value; |
| 3729 | else |
| 3730 | addend += sym->st_value; |
| 3731 | if (osec) |
| 3732 | addend += osec->output_offset; |
| 3733 | if (osec && osec->output_section |
| 3734 | && ! bfd_is_abs_section (osec->output_section) |
| 3735 | && ! bfd_is_und_section (osec->output_section)) |
| 3736 | dynindx = elf_section_data (osec->output_section)->dynindx; |
| 3737 | else |
| 3738 | dynindx = 0; |
| 3739 | } |
| 3740 | |
| 3741 | /* If we're linking an executable at a fixed address, we |
| 3742 | can omit the dynamic relocation as long as the symbol |
| 3743 | is defined in the current link unit (which is implied |
| 3744 | by its output section not being NULL). */ |
| 3745 | if (info->executable && !info->pie |
| 3746 | && (!h || FRVFDPIC_SYM_LOCAL (info, h))) |
| 3747 | { |
| 3748 | if (osec) |
| 3749 | addend += osec->output_section->vma; |
| 3750 | if (IS_FDPIC (input_bfd) |
| 3751 | && (bfd_get_section_flags (output_bfd, |
| 3752 | input_section->output_section) |
| 3753 | & (SEC_ALLOC | SEC_LOAD)) == (SEC_ALLOC | SEC_LOAD)) |
| 3754 | { |
| 3755 | if (_frvfdpic_osec_readonly_p (output_bfd, |
| 3756 | input_section |
| 3757 | ->output_section)) |
| 3758 | { |
| 3759 | info->callbacks->warning |
| 3760 | (info, |
| 3761 | _("cannot emit fixups in read-only section"), |
| 3762 | name, input_bfd, input_section, rel->r_offset); |
| 3763 | return FALSE; |
| 3764 | } |
| 3765 | if (!h || h->root.type != bfd_link_hash_undefweak) |
| 3766 | { |
| 3767 | _frvfdpic_add_rofixup (output_bfd, |
| 3768 | frvfdpic_gotfixup_section |
| 3769 | (info), |
| 3770 | _bfd_elf_section_offset |
| 3771 | (output_bfd, info, |
| 3772 | input_section, rel->r_offset) |
| 3773 | + input_section |
| 3774 | ->output_section->vma |
| 3775 | + input_section->output_offset, |
| 3776 | picrel); |
| 3777 | if (r_type == R_FRV_FUNCDESC_VALUE) |
| 3778 | _frvfdpic_add_rofixup |
| 3779 | (output_bfd, |
| 3780 | frvfdpic_gotfixup_section (info), |
| 3781 | _bfd_elf_section_offset |
| 3782 | (output_bfd, info, |
| 3783 | input_section, rel->r_offset) |
| 3784 | + input_section->output_section->vma |
| 3785 | + input_section->output_offset + 4, picrel); |
| 3786 | } |
| 3787 | } |
| 3788 | } |
| 3789 | else |
| 3790 | { |
| 3791 | if ((bfd_get_section_flags (output_bfd, |
| 3792 | input_section->output_section) |
| 3793 | & (SEC_ALLOC | SEC_LOAD)) == (SEC_ALLOC | SEC_LOAD)) |
| 3794 | { |
| 3795 | if (_frvfdpic_osec_readonly_p (output_bfd, |
| 3796 | input_section |
| 3797 | ->output_section)) |
| 3798 | { |
| 3799 | info->callbacks->warning |
| 3800 | (info, |
| 3801 | _("cannot emit dynamic relocations in read-only section"), |
| 3802 | name, input_bfd, input_section, rel->r_offset); |
| 3803 | return FALSE; |
| 3804 | } |
| 3805 | _frvfdpic_add_dyn_reloc (output_bfd, |
| 3806 | frvfdpic_gotrel_section (info), |
| 3807 | _bfd_elf_section_offset |
| 3808 | (output_bfd, info, |
| 3809 | input_section, rel->r_offset) |
| 3810 | + input_section |
| 3811 | ->output_section->vma |
| 3812 | + input_section->output_offset, |
| 3813 | r_type, dynindx, addend, picrel); |
| 3814 | } |
| 3815 | else if (osec) |
| 3816 | addend += osec->output_section->vma; |
| 3817 | /* We want the addend in-place because dynamic |
| 3818 | relocations are REL. Setting relocation to it |
| 3819 | should arrange for it to be installed. */ |
| 3820 | relocation = addend - rel->r_addend; |
| 3821 | } |
| 3822 | |
| 3823 | if (r_type == R_FRV_FUNCDESC_VALUE) |
| 3824 | { |
| 3825 | /* If we've omitted the dynamic relocation, just emit |
| 3826 | the fixed addresses of the symbol and of the local |
| 3827 | GOT base offset. */ |
| 3828 | if (info->executable && !info->pie |
| 3829 | && (!h || FRVFDPIC_SYM_LOCAL (info, h))) |
| 3830 | bfd_put_32 (output_bfd, |
| 3831 | frvfdpic_got_section (info)->output_section->vma |
| 3832 | + frvfdpic_got_section (info)->output_offset |
| 3833 | + frvfdpic_got_initial_offset (info), |
| 3834 | contents + rel->r_offset + 4); |
| 3835 | else |
| 3836 | /* A function descriptor used for lazy or local |
| 3837 | resolving is initialized such that its high word |
| 3838 | contains the output section index in which the |
| 3839 | PLT entries are located, and the low word |
| 3840 | contains the offset of the lazy PLT entry entry |
| 3841 | point into that section. */ |
| 3842 | bfd_put_32 (output_bfd, |
| 3843 | h && ! FRVFDPIC_SYM_LOCAL (info, h) |
| 3844 | ? 0 |
| 3845 | : _frvfdpic_osec_to_segment (output_bfd, |
| 3846 | sec |
| 3847 | ->output_section), |
| 3848 | contents + rel->r_offset + 4); |
| 3849 | } |
| 3850 | } |
| 3851 | check_segment[0] = check_segment[1] = got_segment; |
| 3852 | break; |
| 3853 | |
| 3854 | case R_FRV_GPREL12: |
| 3855 | case R_FRV_GPRELU12: |
| 3856 | case R_FRV_GPREL32: |
| 3857 | case R_FRV_GPRELHI: |
| 3858 | case R_FRV_GPRELLO: |
| 3859 | check_segment[0] = gprel_segment; |
| 3860 | check_segment[1] = sec |
| 3861 | ? _frvfdpic_osec_to_segment (output_bfd, sec->output_section) |
| 3862 | : (unsigned)-1; |
| 3863 | break; |
| 3864 | |
| 3865 | case R_FRV_GETTLSOFF: |
| 3866 | relocation = frvfdpic_plt_section (info)->output_section->vma |
| 3867 | + frvfdpic_plt_section (info)->output_offset |
| 3868 | + picrel->tlsplt_entry; |
| 3869 | BFD_ASSERT (picrel->tlsplt_entry != (bfd_vma)-1 |
| 3870 | && picrel->tlsdesc_entry); |
| 3871 | check_segment[0] = isec_segment; |
| 3872 | check_segment[1] = plt_segment; |
| 3873 | break; |
| 3874 | |
| 3875 | case R_FRV_GOTTLSDESC12: |
| 3876 | case R_FRV_GOTTLSDESCHI: |
| 3877 | case R_FRV_GOTTLSDESCLO: |
| 3878 | BFD_ASSERT (picrel->tlsdesc_entry); |
| 3879 | relocation = picrel->tlsdesc_entry; |
| 3880 | check_segment[0] = tls_segment; |
| 3881 | check_segment[1] = sec |
| 3882 | && ! bfd_is_abs_section (sec) |
| 3883 | && ! bfd_is_und_section (sec) |
| 3884 | ? _frvfdpic_osec_to_segment (output_bfd, sec->output_section) |
| 3885 | : tls_segment; |
| 3886 | break; |
| 3887 | |
| 3888 | case R_FRV_TLSMOFF12: |
| 3889 | case R_FRV_TLSMOFFHI: |
| 3890 | case R_FRV_TLSMOFFLO: |
| 3891 | case R_FRV_TLSMOFF: |
| 3892 | check_segment[0] = tls_segment; |
| 3893 | if (! sec) |
| 3894 | check_segment[1] = -1; |
| 3895 | else if (bfd_is_abs_section (sec) |
| 3896 | || bfd_is_und_section (sec)) |
| 3897 | { |
| 3898 | relocation = 0; |
| 3899 | check_segment[1] = tls_segment; |
| 3900 | } |
| 3901 | else if (sec->output_section) |
| 3902 | { |
| 3903 | relocation -= tls_biased_base (info); |
| 3904 | check_segment[1] = |
| 3905 | _frvfdpic_osec_to_segment (output_bfd, sec->output_section); |
| 3906 | } |
| 3907 | else |
| 3908 | check_segment[1] = -1; |
| 3909 | break; |
| 3910 | |
| 3911 | case R_FRV_GOTTLSOFF12: |
| 3912 | case R_FRV_GOTTLSOFFHI: |
| 3913 | case R_FRV_GOTTLSOFFLO: |
| 3914 | BFD_ASSERT (picrel->tlsoff_entry); |
| 3915 | relocation = picrel->tlsoff_entry; |
| 3916 | check_segment[0] = tls_segment; |
| 3917 | check_segment[1] = sec |
| 3918 | && ! bfd_is_abs_section (sec) |
| 3919 | && ! bfd_is_und_section (sec) |
| 3920 | ? _frvfdpic_osec_to_segment (output_bfd, sec->output_section) |
| 3921 | : tls_segment; |
| 3922 | break; |
| 3923 | |
| 3924 | case R_FRV_TLSDESC_VALUE: |
| 3925 | case R_FRV_TLSOFF: |
| 3926 | /* These shouldn't be present in input object files. */ |
| 3927 | check_segment[0] = check_segment[1] = isec_segment; |
| 3928 | break; |
| 3929 | |
| 3930 | case R_FRV_TLSDESC_RELAX: |
| 3931 | case R_FRV_GETTLSOFF_RELAX: |
| 3932 | case R_FRV_TLSOFF_RELAX: |
| 3933 | /* These are just annotations for relaxation, nothing to do |
| 3934 | here. */ |
| 3935 | continue; |
| 3936 | |
| 3937 | default: |
| 3938 | check_segment[0] = isec_segment; |
| 3939 | check_segment[1] = sec |
| 3940 | ? _frvfdpic_osec_to_segment (output_bfd, sec->output_section) |
| 3941 | : (unsigned)-1; |
| 3942 | break; |
| 3943 | } |
| 3944 | |
| 3945 | if (check_segment[0] != check_segment[1] && IS_FDPIC (output_bfd)) |
| 3946 | { |
| 3947 | /* If you take this out, remove the #error from fdpic-static-6.d |
| 3948 | in the ld testsuite. */ |
| 3949 | /* This helps catch problems in GCC while we can't do more |
| 3950 | than static linking. The idea is to test whether the |
| 3951 | input file basename is crt0.o only once. */ |
| 3952 | if (silence_segment_error == 1) |
| 3953 | silence_segment_error = |
| 3954 | (strlen (input_bfd->filename) == 6 |
| 3955 | && strcmp (input_bfd->filename, "crt0.o") == 0) |
| 3956 | || (strlen (input_bfd->filename) > 6 |
| 3957 | && strcmp (input_bfd->filename |
| 3958 | + strlen (input_bfd->filename) - 7, |
| 3959 | "/crt0.o") == 0) |
| 3960 | ? -1 : 0; |
| 3961 | if (!silence_segment_error |
| 3962 | /* We don't want duplicate errors for undefined |
| 3963 | symbols. */ |
| 3964 | && !(picrel && picrel->symndx == -1 |
| 3965 | && picrel->d.h->root.type == bfd_link_hash_undefined)) |
| 3966 | { |
| 3967 | if (info->shared || info->pie) |
| 3968 | (*_bfd_error_handler) |
| 3969 | (_("%B(%A+0x%lx): reloc against `%s': %s"), |
| 3970 | input_bfd, input_section, (long)rel->r_offset, name, |
| 3971 | _("relocation references a different segment")); |
| 3972 | else |
| 3973 | info->callbacks->warning |
| 3974 | (info, |
| 3975 | _("relocation references a different segment"), |
| 3976 | name, input_bfd, input_section, rel->r_offset); |
| 3977 | } |
| 3978 | if (!silence_segment_error && (info->shared || info->pie)) |
| 3979 | return FALSE; |
| 3980 | elf_elfheader (output_bfd)->e_flags |= EF_FRV_PIC; |
| 3981 | } |
| 3982 | |
| 3983 | switch (r_type) |
| 3984 | { |
| 3985 | case R_FRV_GOTOFFHI: |
| 3986 | case R_FRV_TLSMOFFHI: |
| 3987 | /* We need the addend to be applied before we shift the |
| 3988 | value right. */ |
| 3989 | relocation += rel->r_addend; |
| 3990 | /* Fall through. */ |
| 3991 | case R_FRV_GOTHI: |
| 3992 | case R_FRV_FUNCDESC_GOTHI: |
| 3993 | case R_FRV_FUNCDESC_GOTOFFHI: |
| 3994 | case R_FRV_GOTTLSOFFHI: |
| 3995 | case R_FRV_GOTTLSDESCHI: |
| 3996 | relocation >>= 16; |
| 3997 | /* Fall through. */ |
| 3998 | |
| 3999 | case R_FRV_GOTLO: |
| 4000 | case R_FRV_FUNCDESC_GOTLO: |
| 4001 | case R_FRV_GOTOFFLO: |
| 4002 | case R_FRV_FUNCDESC_GOTOFFLO: |
| 4003 | case R_FRV_GOTTLSOFFLO: |
| 4004 | case R_FRV_GOTTLSDESCLO: |
| 4005 | case R_FRV_TLSMOFFLO: |
| 4006 | relocation &= 0xffff; |
| 4007 | break; |
| 4008 | |
| 4009 | default: |
| 4010 | break; |
| 4011 | } |
| 4012 | |
| 4013 | switch (r_type) |
| 4014 | { |
| 4015 | case R_FRV_LABEL24: |
| 4016 | if (! IS_FDPIC (output_bfd) || ! picrel->plt) |
| 4017 | break; |
| 4018 | /* Fall through. */ |
| 4019 | |
| 4020 | /* When referencing a GOT entry, a function descriptor or a |
| 4021 | PLT, we don't want the addend to apply to the reference, |
| 4022 | but rather to the referenced symbol. The actual entry |
| 4023 | will have already been created taking the addend into |
| 4024 | account, so cancel it out here. */ |
| 4025 | case R_FRV_GOT12: |
| 4026 | case R_FRV_GOTHI: |
| 4027 | case R_FRV_GOTLO: |
| 4028 | case R_FRV_FUNCDESC_GOT12: |
| 4029 | case R_FRV_FUNCDESC_GOTHI: |
| 4030 | case R_FRV_FUNCDESC_GOTLO: |
| 4031 | case R_FRV_FUNCDESC_GOTOFF12: |
| 4032 | case R_FRV_FUNCDESC_GOTOFFHI: |
| 4033 | case R_FRV_FUNCDESC_GOTOFFLO: |
| 4034 | case R_FRV_GETTLSOFF: |
| 4035 | case R_FRV_GOTTLSDESC12: |
| 4036 | case R_FRV_GOTTLSDESCHI: |
| 4037 | case R_FRV_GOTTLSDESCLO: |
| 4038 | case R_FRV_GOTTLSOFF12: |
| 4039 | case R_FRV_GOTTLSOFFHI: |
| 4040 | case R_FRV_GOTTLSOFFLO: |
| 4041 | /* Note that we only want GOTOFFHI, not GOTOFFLO or GOTOFF12 |
| 4042 | here, since we do want to apply the addend to the others. |
| 4043 | Note that we've applied the addend to GOTOFFHI before we |
| 4044 | shifted it right. */ |
| 4045 | case R_FRV_GOTOFFHI: |
| 4046 | case R_FRV_TLSMOFFHI: |
| 4047 | relocation -= rel->r_addend; |
| 4048 | break; |
| 4049 | |
| 4050 | default: |
| 4051 | break; |
| 4052 | } |
| 4053 | |
| 4054 | if (r_type == R_FRV_HI16) |
| 4055 | r = elf32_frv_relocate_hi16 (input_bfd, rel, contents, relocation); |
| 4056 | |
| 4057 | else if (r_type == R_FRV_LO16) |
| 4058 | r = elf32_frv_relocate_lo16 (input_bfd, rel, contents, relocation); |
| 4059 | |
| 4060 | else if (r_type == R_FRV_LABEL24 || r_type == R_FRV_GETTLSOFF) |
| 4061 | r = elf32_frv_relocate_label24 (input_bfd, input_section, rel, |
| 4062 | contents, relocation); |
| 4063 | |
| 4064 | else if (r_type == R_FRV_GPREL12) |
| 4065 | r = elf32_frv_relocate_gprel12 (info, input_bfd, input_section, rel, |
| 4066 | contents, relocation); |
| 4067 | |
| 4068 | else if (r_type == R_FRV_GPRELU12) |
| 4069 | r = elf32_frv_relocate_gprelu12 (info, input_bfd, input_section, rel, |
| 4070 | contents, relocation); |
| 4071 | |
| 4072 | else if (r_type == R_FRV_GPRELLO) |
| 4073 | r = elf32_frv_relocate_gprello (info, input_bfd, input_section, rel, |
| 4074 | contents, relocation); |
| 4075 | |
| 4076 | else if (r_type == R_FRV_GPRELHI) |
| 4077 | r = elf32_frv_relocate_gprelhi (info, input_bfd, input_section, rel, |
| 4078 | contents, relocation); |
| 4079 | |
| 4080 | else if (r_type == R_FRV_TLSOFF |
| 4081 | || r_type == R_FRV_TLSDESC_VALUE) |
| 4082 | r = bfd_reloc_notsupported; |
| 4083 | |
| 4084 | else |
| 4085 | r = frv_final_link_relocate (howto, input_bfd, input_section, contents, |
| 4086 | rel, relocation); |
| 4087 | |
| 4088 | if (r != bfd_reloc_ok) |
| 4089 | { |
| 4090 | const char * msg = (const char *) NULL; |
| 4091 | |
| 4092 | switch (r) |
| 4093 | { |
| 4094 | case bfd_reloc_overflow: |
| 4095 | r = info->callbacks->reloc_overflow |
| 4096 | (info, (h ? &h->root : NULL), name, howto->name, |
| 4097 | (bfd_vma) 0, input_bfd, input_section, rel->r_offset); |
| 4098 | break; |
| 4099 | |
| 4100 | case bfd_reloc_undefined: |
| 4101 | r = info->callbacks->undefined_symbol |
| 4102 | (info, name, input_bfd, input_section, rel->r_offset, TRUE); |
| 4103 | break; |
| 4104 | |
| 4105 | case bfd_reloc_outofrange: |
| 4106 | msg = _("internal error: out of range error"); |
| 4107 | break; |
| 4108 | |
| 4109 | case bfd_reloc_notsupported: |
| 4110 | msg = _("internal error: unsupported relocation error"); |
| 4111 | break; |
| 4112 | |
| 4113 | case bfd_reloc_dangerous: |
| 4114 | msg = _("internal error: dangerous relocation"); |
| 4115 | break; |
| 4116 | |
| 4117 | default: |
| 4118 | msg = _("internal error: unknown error"); |
| 4119 | break; |
| 4120 | } |
| 4121 | |
| 4122 | if (msg) |
| 4123 | { |
| 4124 | (*_bfd_error_handler) |
| 4125 | (_("%B(%A+0x%lx): reloc against `%s': %s"), |
| 4126 | input_bfd, input_section, (long)rel->r_offset, name, msg); |
| 4127 | return FALSE; |
| 4128 | } |
| 4129 | |
| 4130 | if (! r) |
| 4131 | return FALSE; |
| 4132 | } |
| 4133 | } |
| 4134 | |
| 4135 | return TRUE; |
| 4136 | } |
| 4137 | \f |
| 4138 | /* Return the section that should be marked against GC for a given |
| 4139 | relocation. */ |
| 4140 | |
| 4141 | static asection * |
| 4142 | elf32_frv_gc_mark_hook (asection *sec, |
| 4143 | struct bfd_link_info *info, |
| 4144 | Elf_Internal_Rela *rel, |
| 4145 | struct elf_link_hash_entry *h, |
| 4146 | Elf_Internal_Sym *sym) |
| 4147 | { |
| 4148 | if (h != NULL) |
| 4149 | switch (ELF32_R_TYPE (rel->r_info)) |
| 4150 | { |
| 4151 | case R_FRV_GNU_VTINHERIT: |
| 4152 | case R_FRV_GNU_VTENTRY: |
| 4153 | return NULL; |
| 4154 | } |
| 4155 | |
| 4156 | return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym); |
| 4157 | } |
| 4158 | \f |
| 4159 | /* Hook called by the linker routine which adds symbols from an object |
| 4160 | file. We use it to put .comm items in .scomm, and not .comm. */ |
| 4161 | |
| 4162 | static bfd_boolean |
| 4163 | elf32_frv_add_symbol_hook (abfd, info, sym, namep, flagsp, secp, valp) |
| 4164 | bfd *abfd; |
| 4165 | struct bfd_link_info *info; |
| 4166 | Elf_Internal_Sym *sym; |
| 4167 | const char **namep ATTRIBUTE_UNUSED; |
| 4168 | flagword *flagsp ATTRIBUTE_UNUSED; |
| 4169 | asection **secp; |
| 4170 | bfd_vma *valp; |
| 4171 | { |
| 4172 | if (sym->st_shndx == SHN_COMMON |
| 4173 | && !info->relocatable |
| 4174 | && (int)sym->st_size <= (int)bfd_get_gp_size (abfd)) |
| 4175 | { |
| 4176 | /* Common symbols less than or equal to -G nn bytes are |
| 4177 | automatically put into .sbss. */ |
| 4178 | |
| 4179 | asection *scomm = bfd_get_section_by_name (abfd, ".scommon"); |
| 4180 | |
| 4181 | if (scomm == NULL) |
| 4182 | { |
| 4183 | scomm = bfd_make_section_with_flags (abfd, ".scommon", |
| 4184 | (SEC_ALLOC |
| 4185 | | SEC_IS_COMMON |
| 4186 | | SEC_LINKER_CREATED)); |
| 4187 | if (scomm == NULL) |
| 4188 | return FALSE; |
| 4189 | } |
| 4190 | |
| 4191 | *secp = scomm; |
| 4192 | *valp = sym->st_size; |
| 4193 | } |
| 4194 | |
| 4195 | return TRUE; |
| 4196 | } |
| 4197 | |
| 4198 | /* We need dynamic symbols for every section, since segments can |
| 4199 | relocate independently. */ |
| 4200 | static bfd_boolean |
| 4201 | _frvfdpic_link_omit_section_dynsym (bfd *output_bfd ATTRIBUTE_UNUSED, |
| 4202 | struct bfd_link_info *info |
| 4203 | ATTRIBUTE_UNUSED, |
| 4204 | asection *p ATTRIBUTE_UNUSED) |
| 4205 | { |
| 4206 | switch (elf_section_data (p)->this_hdr.sh_type) |
| 4207 | { |
| 4208 | case SHT_PROGBITS: |
| 4209 | case SHT_NOBITS: |
| 4210 | /* If sh_type is yet undecided, assume it could be |
| 4211 | SHT_PROGBITS/SHT_NOBITS. */ |
| 4212 | case SHT_NULL: |
| 4213 | return FALSE; |
| 4214 | |
| 4215 | /* There shouldn't be section relative relocations |
| 4216 | against any other section. */ |
| 4217 | default: |
| 4218 | return TRUE; |
| 4219 | } |
| 4220 | } |
| 4221 | |
| 4222 | /* Create a .got section, as well as its additional info field. This |
| 4223 | is almost entirely copied from |
| 4224 | elflink.c:_bfd_elf_create_got_section(). */ |
| 4225 | |
| 4226 | static bfd_boolean |
| 4227 | _frv_create_got_section (bfd *abfd, struct bfd_link_info *info) |
| 4228 | { |
| 4229 | flagword flags, pltflags; |
| 4230 | asection *s; |
| 4231 | struct elf_link_hash_entry *h; |
| 4232 | struct bfd_link_hash_entry *bh; |
| 4233 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
| 4234 | int ptralign; |
| 4235 | int offset; |
| 4236 | |
| 4237 | /* This function may be called more than once. */ |
| 4238 | s = bfd_get_section_by_name (abfd, ".got"); |
| 4239 | if (s != NULL && (s->flags & SEC_LINKER_CREATED) != 0) |
| 4240 | return TRUE; |
| 4241 | |
| 4242 | /* Machine specific: although pointers are 32-bits wide, we want the |
| 4243 | GOT to be aligned to a 64-bit boundary, such that function |
| 4244 | descriptors in it can be accessed with 64-bit loads and |
| 4245 | stores. */ |
| 4246 | ptralign = 3; |
| 4247 | |
| 4248 | flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY |
| 4249 | | SEC_LINKER_CREATED); |
| 4250 | pltflags = flags; |
| 4251 | |
| 4252 | s = bfd_make_section_with_flags (abfd, ".got", flags); |
| 4253 | if (s == NULL |
| 4254 | || !bfd_set_section_alignment (abfd, s, ptralign)) |
| 4255 | return FALSE; |
| 4256 | |
| 4257 | if (bed->want_got_plt) |
| 4258 | { |
| 4259 | s = bfd_make_section_with_flags (abfd, ".got.plt", flags); |
| 4260 | if (s == NULL |
| 4261 | || !bfd_set_section_alignment (abfd, s, ptralign)) |
| 4262 | return FALSE; |
| 4263 | } |
| 4264 | |
| 4265 | if (bed->want_got_sym) |
| 4266 | { |
| 4267 | /* Define the symbol _GLOBAL_OFFSET_TABLE_ at the start of the .got |
| 4268 | (or .got.plt) section. We don't do this in the linker script |
| 4269 | because we don't want to define the symbol if we are not creating |
| 4270 | a global offset table. */ |
| 4271 | h = _bfd_elf_define_linkage_sym (abfd, info, s, "_GLOBAL_OFFSET_TABLE_"); |
| 4272 | elf_hash_table (info)->hgot = h; |
| 4273 | if (h == NULL) |
| 4274 | return FALSE; |
| 4275 | |
| 4276 | /* Machine-specific: we want the symbol for executables as |
| 4277 | well. */ |
| 4278 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
| 4279 | return FALSE; |
| 4280 | } |
| 4281 | |
| 4282 | /* The first bit of the global offset table is the header. */ |
| 4283 | s->size += bed->got_header_size; |
| 4284 | |
| 4285 | /* This is the machine-specific part. Create and initialize section |
| 4286 | data for the got. */ |
| 4287 | if (IS_FDPIC (abfd)) |
| 4288 | { |
| 4289 | frvfdpic_got_section (info) = s; |
| 4290 | frvfdpic_relocs_info (info) = htab_try_create (1, |
| 4291 | frvfdpic_relocs_info_hash, |
| 4292 | frvfdpic_relocs_info_eq, |
| 4293 | (htab_del) NULL); |
| 4294 | if (! frvfdpic_relocs_info (info)) |
| 4295 | return FALSE; |
| 4296 | |
| 4297 | s = bfd_make_section_with_flags (abfd, ".rel.got", |
| 4298 | (flags | SEC_READONLY)); |
| 4299 | if (s == NULL |
| 4300 | || ! bfd_set_section_alignment (abfd, s, 2)) |
| 4301 | return FALSE; |
| 4302 | |
| 4303 | frvfdpic_gotrel_section (info) = s; |
| 4304 | |
| 4305 | /* Machine-specific. */ |
| 4306 | s = bfd_make_section_with_flags (abfd, ".rofixup", |
| 4307 | (flags | SEC_READONLY)); |
| 4308 | if (s == NULL |
| 4309 | || ! bfd_set_section_alignment (abfd, s, 2)) |
| 4310 | return FALSE; |
| 4311 | |
| 4312 | frvfdpic_gotfixup_section (info) = s; |
| 4313 | offset = -2048; |
| 4314 | flags = BSF_GLOBAL; |
| 4315 | } |
| 4316 | else |
| 4317 | { |
| 4318 | offset = 2048; |
| 4319 | flags = BSF_GLOBAL | BSF_WEAK; |
| 4320 | } |
| 4321 | |
| 4322 | /* Define _gp in .rofixup, for FDPIC, or .got otherwise. If it |
| 4323 | turns out that we're linking with a different linker script, the |
| 4324 | linker script will override it. */ |
| 4325 | bh = NULL; |
| 4326 | if (!(_bfd_generic_link_add_one_symbol |
| 4327 | (info, abfd, "_gp", flags, s, offset, (const char *) NULL, FALSE, |
| 4328 | bed->collect, &bh))) |
| 4329 | return FALSE; |
| 4330 | h = (struct elf_link_hash_entry *) bh; |
| 4331 | h->def_regular = 1; |
| 4332 | h->type = STT_OBJECT; |
| 4333 | /* h->other = STV_HIDDEN; */ /* Should we? */ |
| 4334 | |
| 4335 | /* Machine-specific: we want the symbol for executables as well. */ |
| 4336 | if (IS_FDPIC (abfd) && ! bfd_elf_link_record_dynamic_symbol (info, h)) |
| 4337 | return FALSE; |
| 4338 | |
| 4339 | if (!IS_FDPIC (abfd)) |
| 4340 | return TRUE; |
| 4341 | |
| 4342 | /* FDPIC supports Thread Local Storage, and this may require a |
| 4343 | procedure linkage table for TLS PLT entries. */ |
| 4344 | |
| 4345 | /* This is mostly copied from |
| 4346 | elflink.c:_bfd_elf_create_dynamic_sections(). */ |
| 4347 | |
| 4348 | flags = pltflags; |
| 4349 | pltflags |= SEC_CODE; |
| 4350 | if (bed->plt_not_loaded) |
| 4351 | pltflags &= ~ (SEC_CODE | SEC_LOAD | SEC_HAS_CONTENTS); |
| 4352 | if (bed->plt_readonly) |
| 4353 | pltflags |= SEC_READONLY; |
| 4354 | |
| 4355 | s = bfd_make_section_with_flags (abfd, ".plt", pltflags); |
| 4356 | if (s == NULL |
| 4357 | || ! bfd_set_section_alignment (abfd, s, bed->plt_alignment)) |
| 4358 | return FALSE; |
| 4359 | /* FRV-specific: remember it. */ |
| 4360 | frvfdpic_plt_section (info) = s; |
| 4361 | |
| 4362 | /* Define the symbol _PROCEDURE_LINKAGE_TABLE_ at the start of the |
| 4363 | .plt section. */ |
| 4364 | if (bed->want_plt_sym) |
| 4365 | { |
| 4366 | h = _bfd_elf_define_linkage_sym (abfd, info, s, |
| 4367 | "_PROCEDURE_LINKAGE_TABLE_"); |
| 4368 | elf_hash_table (info)->hplt = h; |
| 4369 | if (h == NULL) |
| 4370 | return FALSE; |
| 4371 | } |
| 4372 | |
| 4373 | /* FRV-specific: we want rel relocations for the plt. */ |
| 4374 | s = bfd_make_section_with_flags (abfd, ".rel.plt", |
| 4375 | flags | SEC_READONLY); |
| 4376 | if (s == NULL |
| 4377 | || ! bfd_set_section_alignment (abfd, s, bed->s->log_file_align)) |
| 4378 | return FALSE; |
| 4379 | /* FRV-specific: remember it. */ |
| 4380 | frvfdpic_pltrel_section (info) = s; |
| 4381 | |
| 4382 | return TRUE; |
| 4383 | } |
| 4384 | |
| 4385 | /* Make sure the got and plt sections exist, and that our pointers in |
| 4386 | the link hash table point to them. */ |
| 4387 | |
| 4388 | static bfd_boolean |
| 4389 | elf32_frvfdpic_create_dynamic_sections (bfd *abfd, struct bfd_link_info *info) |
| 4390 | { |
| 4391 | /* This is mostly copied from |
| 4392 | elflink.c:_bfd_elf_create_dynamic_sections(). */ |
| 4393 | flagword flags; |
| 4394 | asection *s; |
| 4395 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
| 4396 | |
| 4397 | flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY |
| 4398 | | SEC_LINKER_CREATED); |
| 4399 | |
| 4400 | /* We need to create .plt, .rel[a].plt, .got, .got.plt, .dynbss, and |
| 4401 | .rel[a].bss sections. */ |
| 4402 | |
| 4403 | /* FRV-specific: we want to create the GOT and the PLT in the FRV |
| 4404 | way. */ |
| 4405 | if (! _frv_create_got_section (abfd, info)) |
| 4406 | return FALSE; |
| 4407 | |
| 4408 | /* FRV-specific: make sure we created everything we wanted. */ |
| 4409 | BFD_ASSERT (frvfdpic_got_section (info) && frvfdpic_gotrel_section (info) |
| 4410 | && frvfdpic_gotfixup_section (info) |
| 4411 | && frvfdpic_plt_section (info) |
| 4412 | && frvfdpic_pltrel_section (info)); |
| 4413 | |
| 4414 | if (bed->want_dynbss) |
| 4415 | { |
| 4416 | /* The .dynbss section is a place to put symbols which are defined |
| 4417 | by dynamic objects, are referenced by regular objects, and are |
| 4418 | not functions. We must allocate space for them in the process |
| 4419 | image and use a R_*_COPY reloc to tell the dynamic linker to |
| 4420 | initialize them at run time. The linker script puts the .dynbss |
| 4421 | section into the .bss section of the final image. */ |
| 4422 | s = bfd_make_section_with_flags (abfd, ".dynbss", |
| 4423 | SEC_ALLOC | SEC_LINKER_CREATED); |
| 4424 | if (s == NULL) |
| 4425 | return FALSE; |
| 4426 | |
| 4427 | /* The .rel[a].bss section holds copy relocs. This section is not |
| 4428 | normally needed. We need to create it here, though, so that the |
| 4429 | linker will map it to an output section. We can't just create it |
| 4430 | only if we need it, because we will not know whether we need it |
| 4431 | until we have seen all the input files, and the first time the |
| 4432 | main linker code calls BFD after examining all the input files |
| 4433 | (size_dynamic_sections) the input sections have already been |
| 4434 | mapped to the output sections. If the section turns out not to |
| 4435 | be needed, we can discard it later. We will never need this |
| 4436 | section when generating a shared object, since they do not use |
| 4437 | copy relocs. */ |
| 4438 | if (! info->shared) |
| 4439 | { |
| 4440 | s = bfd_make_section_with_flags (abfd, |
| 4441 | (bed->default_use_rela_p |
| 4442 | ? ".rela.bss" : ".rel.bss"), |
| 4443 | flags | SEC_READONLY); |
| 4444 | if (s == NULL |
| 4445 | || ! bfd_set_section_alignment (abfd, s, bed->s->log_file_align)) |
| 4446 | return FALSE; |
| 4447 | } |
| 4448 | } |
| 4449 | |
| 4450 | return TRUE; |
| 4451 | } |
| 4452 | |
| 4453 | /* Compute the total GOT and PLT size required by each symbol in each |
| 4454 | range. Symbols may require up to 4 words in the GOT: an entry |
| 4455 | pointing to the symbol, an entry pointing to its function |
| 4456 | descriptor, and a private function descriptors taking two |
| 4457 | words. */ |
| 4458 | |
| 4459 | static void |
| 4460 | _frvfdpic_count_nontls_entries (struct frvfdpic_relocs_info *entry, |
| 4461 | struct _frvfdpic_dynamic_got_info *dinfo) |
| 4462 | { |
| 4463 | /* Allocate space for a GOT entry pointing to the symbol. */ |
| 4464 | if (entry->got12) |
| 4465 | dinfo->got12 += 4; |
| 4466 | else if (entry->gotlos) |
| 4467 | dinfo->gotlos += 4; |
| 4468 | else if (entry->gothilo) |
| 4469 | dinfo->gothilo += 4; |
| 4470 | else |
| 4471 | entry->relocs32--; |
| 4472 | entry->relocs32++; |
| 4473 | |
| 4474 | /* Allocate space for a GOT entry pointing to the function |
| 4475 | descriptor. */ |
| 4476 | if (entry->fdgot12) |
| 4477 | dinfo->got12 += 4; |
| 4478 | else if (entry->fdgotlos) |
| 4479 | dinfo->gotlos += 4; |
| 4480 | else if (entry->fdgothilo) |
| 4481 | dinfo->gothilo += 4; |
| 4482 | else |
| 4483 | entry->relocsfd--; |
| 4484 | entry->relocsfd++; |
| 4485 | |
| 4486 | /* Decide whether we need a PLT entry, a function descriptor in the |
| 4487 | GOT, and a lazy PLT entry for this symbol. */ |
| 4488 | entry->plt = entry->call |
| 4489 | && entry->symndx == -1 && ! FRVFDPIC_SYM_LOCAL (dinfo->info, entry->d.h) |
| 4490 | && elf_hash_table (dinfo->info)->dynamic_sections_created; |
| 4491 | entry->privfd = entry->plt |
| 4492 | || entry->fdgoff12 || entry->fdgofflos || entry->fdgoffhilo |
| 4493 | || ((entry->fd || entry->fdgot12 || entry->fdgotlos || entry->fdgothilo) |
| 4494 | && (entry->symndx != -1 |
| 4495 | || FRVFDPIC_FUNCDESC_LOCAL (dinfo->info, entry->d.h))); |
| 4496 | entry->lazyplt = entry->privfd |
| 4497 | && entry->symndx == -1 && ! FRVFDPIC_SYM_LOCAL (dinfo->info, entry->d.h) |
| 4498 | && ! (dinfo->info->flags & DF_BIND_NOW) |
| 4499 | && elf_hash_table (dinfo->info)->dynamic_sections_created; |
| 4500 | |
| 4501 | /* Allocate space for a function descriptor. */ |
| 4502 | if (entry->fdgoff12) |
| 4503 | dinfo->fd12 += 8; |
| 4504 | else if (entry->fdgofflos) |
| 4505 | dinfo->fdlos += 8; |
| 4506 | else if (entry->privfd && entry->plt) |
| 4507 | dinfo->fdplt += 8; |
| 4508 | else if (entry->privfd) |
| 4509 | dinfo->fdhilo += 8; |
| 4510 | else |
| 4511 | entry->relocsfdv--; |
| 4512 | entry->relocsfdv++; |
| 4513 | |
| 4514 | if (entry->lazyplt) |
| 4515 | dinfo->lzplt += 8; |
| 4516 | } |
| 4517 | |
| 4518 | /* Compute the total GOT size required by each TLS symbol in each |
| 4519 | range. Symbols may require up to 5 words in the GOT: an entry |
| 4520 | holding the TLS offset for the symbol, and an entry with a full TLS |
| 4521 | descriptor taking 4 words. */ |
| 4522 | |
| 4523 | static void |
| 4524 | _frvfdpic_count_tls_entries (struct frvfdpic_relocs_info *entry, |
| 4525 | struct _frvfdpic_dynamic_got_info *dinfo, |
| 4526 | bfd_boolean subtract) |
| 4527 | { |
| 4528 | const int l = subtract ? -1 : 1; |
| 4529 | |
| 4530 | /* Allocate space for a GOT entry with the TLS offset of the |
| 4531 | symbol. */ |
| 4532 | if (entry->tlsoff12) |
| 4533 | dinfo->got12 += 4 * l; |
| 4534 | else if (entry->tlsofflos) |
| 4535 | dinfo->gotlos += 4 * l; |
| 4536 | else if (entry->tlsoffhilo) |
| 4537 | dinfo->gothilo += 4 * l; |
| 4538 | else |
| 4539 | entry->relocstlsoff -= l; |
| 4540 | entry->relocstlsoff += l; |
| 4541 | |
| 4542 | /* If there's any TLSOFF relocation, mark the output file as not |
| 4543 | suitable for dlopening. This mark will remain even if we relax |
| 4544 | all such relocations, but this is not a problem, since we'll only |
| 4545 | do so for executables, and we definitely don't want anyone |
| 4546 | dlopening executables. */ |
| 4547 | if (entry->relocstlsoff) |
| 4548 | dinfo->info->flags |= DF_STATIC_TLS; |
| 4549 | |
| 4550 | /* Allocate space for a TLS descriptor. */ |
| 4551 | if (entry->tlsdesc12) |
| 4552 | dinfo->tlsd12 += 8 * l; |
| 4553 | else if (entry->tlsdesclos) |
| 4554 | dinfo->tlsdlos += 8 * l; |
| 4555 | else if (entry->tlsplt) |
| 4556 | dinfo->tlsdplt += 8 * l; |
| 4557 | else if (entry->tlsdeschilo) |
| 4558 | dinfo->tlsdhilo += 8 * l; |
| 4559 | else |
| 4560 | entry->relocstlsd -= l; |
| 4561 | entry->relocstlsd += l; |
| 4562 | } |
| 4563 | |
| 4564 | /* Compute the number of dynamic relocations and fixups that a symbol |
| 4565 | requires, and add (or subtract) from the grand and per-symbol |
| 4566 | totals. */ |
| 4567 | |
| 4568 | static void |
| 4569 | _frvfdpic_count_relocs_fixups (struct frvfdpic_relocs_info *entry, |
| 4570 | struct _frvfdpic_dynamic_got_info *dinfo, |
| 4571 | bfd_boolean subtract) |
| 4572 | { |
| 4573 | bfd_vma relocs = 0, fixups = 0, tlsrets = 0; |
| 4574 | |
| 4575 | if (!dinfo->info->executable || dinfo->info->pie) |
| 4576 | { |
| 4577 | relocs = entry->relocs32 + entry->relocsfd + entry->relocsfdv |
| 4578 | + entry->relocstlsd; |
| 4579 | |
| 4580 | /* In the executable, TLS relocations to symbols that bind |
| 4581 | locally (including those that resolve to global TLS offsets) |
| 4582 | are resolved immediately, without any need for fixups or |
| 4583 | dynamic relocations. In shared libraries, however, we must |
| 4584 | emit dynamic relocations even for local symbols, because we |
| 4585 | don't know the module id the library is going to get at |
| 4586 | run-time, nor its TLS base offset. */ |
| 4587 | if (!dinfo->info->executable |
| 4588 | || (entry->symndx == -1 |
| 4589 | && ! FRVFDPIC_SYM_LOCAL (dinfo->info, entry->d.h))) |
| 4590 | relocs += entry->relocstlsoff; |
| 4591 | } |
| 4592 | else |
| 4593 | { |
| 4594 | if (entry->symndx != -1 || FRVFDPIC_SYM_LOCAL (dinfo->info, entry->d.h)) |
| 4595 | { |
| 4596 | if (entry->symndx != -1 |
| 4597 | || entry->d.h->root.type != bfd_link_hash_undefweak) |
| 4598 | fixups += entry->relocs32 + 2 * entry->relocsfdv; |
| 4599 | fixups += entry->relocstlsd; |
| 4600 | tlsrets += entry->relocstlsd; |
| 4601 | } |
| 4602 | else |
| 4603 | { |
| 4604 | relocs += entry->relocs32 + entry->relocsfdv |
| 4605 | + entry->relocstlsoff + entry->relocstlsd; |
| 4606 | } |
| 4607 | |
| 4608 | if (entry->symndx != -1 |
| 4609 | || FRVFDPIC_FUNCDESC_LOCAL (dinfo->info, entry->d.h)) |
| 4610 | { |
| 4611 | if (entry->symndx != -1 |
| 4612 | || entry->d.h->root.type != bfd_link_hash_undefweak) |
| 4613 | fixups += entry->relocsfd; |
| 4614 | } |
| 4615 | else |
| 4616 | relocs += entry->relocsfd; |
| 4617 | } |
| 4618 | |
| 4619 | if (subtract) |
| 4620 | { |
| 4621 | relocs = - relocs; |
| 4622 | fixups = - fixups; |
| 4623 | tlsrets = - tlsrets; |
| 4624 | } |
| 4625 | |
| 4626 | entry->dynrelocs += relocs; |
| 4627 | entry->fixups += fixups; |
| 4628 | dinfo->relocs += relocs; |
| 4629 | dinfo->fixups += fixups; |
| 4630 | dinfo->tls_ret_refs += tlsrets; |
| 4631 | } |
| 4632 | |
| 4633 | /* Look for opportunities to relax TLS relocations. We can assume |
| 4634 | we're linking the main executable or a static-tls library, since |
| 4635 | otherwise we wouldn't have got here. When relaxing, we have to |
| 4636 | first undo any previous accounting of TLS uses of fixups, dynamic |
| 4637 | relocations, GOT and PLT entries. */ |
| 4638 | |
| 4639 | static void |
| 4640 | _frvfdpic_relax_tls_entries (struct frvfdpic_relocs_info *entry, |
| 4641 | struct _frvfdpic_dynamic_got_info *dinfo, |
| 4642 | bfd_boolean relaxing) |
| 4643 | { |
| 4644 | bfd_boolean changed = ! relaxing; |
| 4645 | |
| 4646 | BFD_ASSERT (dinfo->info->executable |
| 4647 | || (dinfo->info->flags & DF_STATIC_TLS)); |
| 4648 | |
| 4649 | if (entry->tlsdesc12 || entry->tlsdesclos || entry->tlsdeschilo) |
| 4650 | { |
| 4651 | if (! changed) |
| 4652 | { |
| 4653 | _frvfdpic_count_relocs_fixups (entry, dinfo, TRUE); |
| 4654 | _frvfdpic_count_tls_entries (entry, dinfo, TRUE); |
| 4655 | changed = TRUE; |
| 4656 | } |
| 4657 | |
| 4658 | /* When linking an executable, we can always decay GOTTLSDESC to |
| 4659 | TLSMOFF, if the symbol is local, or GOTTLSOFF, otherwise. |
| 4660 | When linking a static-tls shared library, using TLSMOFF is |
| 4661 | not an option, but we can still use GOTTLSOFF. When decaying |
| 4662 | to GOTTLSOFF, we must keep the GOT entry in range. We know |
| 4663 | it has to fit because we'll be trading the 4 words of hte TLS |
| 4664 | descriptor for a single word in the same range. */ |
| 4665 | if (! dinfo->info->executable |
| 4666 | || (entry->symndx == -1 |
| 4667 | && ! FRVFDPIC_SYM_LOCAL (dinfo->info, entry->d.h))) |
| 4668 | { |
| 4669 | entry->tlsoff12 |= entry->tlsdesc12; |
| 4670 | entry->tlsofflos |= entry->tlsdesclos; |
| 4671 | entry->tlsoffhilo |= entry->tlsdeschilo; |
| 4672 | } |
| 4673 | |
| 4674 | entry->tlsdesc12 = entry->tlsdesclos = entry->tlsdeschilo = 0; |
| 4675 | } |
| 4676 | |
| 4677 | /* We can only decay TLSOFFs or call #gettlsoff to TLSMOFF in the |
| 4678 | main executable. We have to check whether the symbol's TLSOFF is |
| 4679 | in range for a setlos. For symbols with a hash entry, we can |
| 4680 | determine exactly what to do; for others locals, we don't have |
| 4681 | addresses handy, so we use the size of the TLS section as an |
| 4682 | approximation. If we get it wrong, we'll retain a GOT entry |
| 4683 | holding the TLS offset (without dynamic relocations or fixups), |
| 4684 | but we'll still optimize away the loads from it. Since TLS sizes |
| 4685 | are generally very small, it's probably not worth attempting to |
| 4686 | do better than this. */ |
| 4687 | if ((entry->tlsplt |
| 4688 | || entry->tlsoff12 || entry->tlsofflos || entry->tlsoffhilo) |
| 4689 | && dinfo->info->executable && relaxing |
| 4690 | && ((entry->symndx == -1 |
| 4691 | && FRVFDPIC_SYM_LOCAL (dinfo->info, entry->d.h) |
| 4692 | /* The above may hold for an undefweak TLS symbol, so make |
| 4693 | sure we don't have this case before accessing def.value |
| 4694 | and def.section. */ |
| 4695 | && (entry->d.h->root.type == bfd_link_hash_undefweak |
| 4696 | || (bfd_vma)(entry->d.h->root.u.def.value |
| 4697 | + (entry->d.h->root.u.def.section |
| 4698 | ->output_section->vma) |
| 4699 | + entry->d.h->root.u.def.section->output_offset |
| 4700 | + entry->addend |
| 4701 | - tls_biased_base (dinfo->info) |
| 4702 | + 32768) < (bfd_vma)65536)) |
| 4703 | || (entry->symndx != -1 |
| 4704 | && (elf_hash_table (dinfo->info)->tls_sec->size |
| 4705 | + abs (entry->addend) < 32768 + FRVFDPIC_TLS_BIAS)))) |
| 4706 | { |
| 4707 | if (! changed) |
| 4708 | { |
| 4709 | _frvfdpic_count_relocs_fixups (entry, dinfo, TRUE); |
| 4710 | _frvfdpic_count_tls_entries (entry, dinfo, TRUE); |
| 4711 | changed = TRUE; |
| 4712 | } |
| 4713 | |
| 4714 | entry->tlsplt = |
| 4715 | entry->tlsoff12 = entry->tlsofflos = entry->tlsoffhilo = 0; |
| 4716 | } |
| 4717 | |
| 4718 | /* We can decay `call #gettlsoff' to a ldi #tlsoff if we already |
| 4719 | have a #gottlsoff12 relocation for this entry, or if we can fit |
| 4720 | one more in the 12-bit (and 16-bit) ranges. */ |
| 4721 | if (entry->tlsplt |
| 4722 | && (entry->tlsoff12 |
| 4723 | || (relaxing |
| 4724 | && dinfo->got12 + dinfo->fd12 + dinfo->tlsd12 <= 4096 - 12 - 4 |
| 4725 | && (dinfo->got12 + dinfo->fd12 + dinfo->tlsd12 |
| 4726 | + dinfo->gotlos + dinfo->fdlos + dinfo->tlsdlos |
| 4727 | <= 65536 - 12 - 4)))) |
| 4728 | { |
| 4729 | if (! changed) |
| 4730 | { |
| 4731 | _frvfdpic_count_relocs_fixups (entry, dinfo, TRUE); |
| 4732 | _frvfdpic_count_tls_entries (entry, dinfo, TRUE); |
| 4733 | changed = TRUE; |
| 4734 | } |
| 4735 | |
| 4736 | entry->tlsoff12 = 1; |
| 4737 | entry->tlsplt = 0; |
| 4738 | } |
| 4739 | |
| 4740 | if (changed) |
| 4741 | { |
| 4742 | _frvfdpic_count_tls_entries (entry, dinfo, FALSE); |
| 4743 | _frvfdpic_count_relocs_fixups (entry, dinfo, FALSE); |
| 4744 | } |
| 4745 | |
| 4746 | return; |
| 4747 | } |
| 4748 | |
| 4749 | /* Compute the total GOT and PLT size required by each symbol in each range. * |
| 4750 | Symbols may require up to 4 words in the GOT: an entry pointing to |
| 4751 | the symbol, an entry pointing to its function descriptor, and a |
| 4752 | private function descriptors taking two words. */ |
| 4753 | |
| 4754 | static int |
| 4755 | _frvfdpic_count_got_plt_entries (void **entryp, void *dinfo_) |
| 4756 | { |
| 4757 | struct frvfdpic_relocs_info *entry = *entryp; |
| 4758 | struct _frvfdpic_dynamic_got_info *dinfo = dinfo_; |
| 4759 | |
| 4760 | _frvfdpic_count_nontls_entries (entry, dinfo); |
| 4761 | |
| 4762 | if (dinfo->info->executable || (dinfo->info->flags & DF_STATIC_TLS)) |
| 4763 | _frvfdpic_relax_tls_entries (entry, dinfo, FALSE); |
| 4764 | else |
| 4765 | { |
| 4766 | _frvfdpic_count_tls_entries (entry, dinfo, FALSE); |
| 4767 | _frvfdpic_count_relocs_fixups (entry, dinfo, FALSE); |
| 4768 | } |
| 4769 | |
| 4770 | return 1; |
| 4771 | } |
| 4772 | |
| 4773 | /* Determine the positive and negative ranges to be used by each |
| 4774 | offset range in the GOT. FDCUR and CUR, that must be aligned to a |
| 4775 | double-word boundary, are the minimum (negative) and maximum |
| 4776 | (positive) GOT offsets already used by previous ranges, except for |
| 4777 | an ODD entry that may have been left behind. GOT and FD indicate |
| 4778 | the size of GOT entries and function descriptors that must be |
| 4779 | placed within the range from -WRAP to WRAP. If there's room left, |
| 4780 | up to FDPLT bytes should be reserved for additional function |
| 4781 | descriptors. */ |
| 4782 | |
| 4783 | inline static bfd_signed_vma |
| 4784 | _frvfdpic_compute_got_alloc_data (struct _frvfdpic_dynamic_got_alloc_data *gad, |
| 4785 | bfd_signed_vma fdcur, |
| 4786 | bfd_signed_vma odd, |
| 4787 | bfd_signed_vma cur, |
| 4788 | bfd_vma got, |
| 4789 | bfd_vma fd, |
| 4790 | bfd_vma fdplt, |
| 4791 | bfd_vma tlsd, |
| 4792 | bfd_vma tlsdplt, |
| 4793 | bfd_vma wrap) |
| 4794 | { |
| 4795 | bfd_signed_vma wrapmin = -wrap; |
| 4796 | const bfd_vma tdescsz = 8; |
| 4797 | |
| 4798 | /* Start at the given initial points. */ |
| 4799 | gad->fdcur = fdcur; |
| 4800 | gad->cur = cur; |
| 4801 | |
| 4802 | /* If we had an incoming odd word and we have any got entries that |
| 4803 | are going to use it, consume it, otherwise leave gad->odd at |
| 4804 | zero. We might force gad->odd to zero and return the incoming |
| 4805 | odd such that it is used by the next range, but then GOT entries |
| 4806 | might appear to be out of order and we wouldn't be able to |
| 4807 | shorten the GOT by one word if it turns out to end with an |
| 4808 | unpaired GOT entry. */ |
| 4809 | if (odd && got) |
| 4810 | { |
| 4811 | gad->odd = odd; |
| 4812 | got -= 4; |
| 4813 | odd = 0; |
| 4814 | } |
| 4815 | else |
| 4816 | gad->odd = 0; |
| 4817 | |
| 4818 | /* If we're left with an unpaired GOT entry, compute its location |
| 4819 | such that we can return it. Otherwise, if got doesn't require an |
| 4820 | odd number of words here, either odd was already zero in the |
| 4821 | block above, or it was set to zero because got was non-zero, or |
| 4822 | got was already zero. In the latter case, we want the value of |
| 4823 | odd to carry over to the return statement, so we don't want to |
| 4824 | reset odd unless the condition below is true. */ |
| 4825 | if (got & 4) |
| 4826 | { |
| 4827 | odd = cur + got; |
| 4828 | got += 4; |
| 4829 | } |
| 4830 | |
| 4831 | /* Compute the tentative boundaries of this range. */ |
| 4832 | gad->max = cur + got; |
| 4833 | gad->min = fdcur - fd; |
| 4834 | gad->fdplt = 0; |
| 4835 | |
| 4836 | /* If function descriptors took too much space, wrap some of them |
| 4837 | around. */ |
| 4838 | if (gad->min < wrapmin) |
| 4839 | { |
| 4840 | gad->max += wrapmin - gad->min; |
| 4841 | gad->tmin = gad->min = wrapmin; |
| 4842 | } |
| 4843 | |
| 4844 | /* If GOT entries took too much space, wrap some of them around. |
| 4845 | This may well cause gad->min to become lower than wrapmin. This |
| 4846 | will cause a relocation overflow later on, so we don't have to |
| 4847 | report it here . */ |
| 4848 | if ((bfd_vma) gad->max > wrap) |
| 4849 | { |
| 4850 | gad->min -= gad->max - wrap; |
| 4851 | gad->max = wrap; |
| 4852 | } |
| 4853 | |
| 4854 | /* Add TLS descriptors. */ |
| 4855 | gad->tmax = gad->max + tlsd; |
| 4856 | gad->tmin = gad->min; |
| 4857 | gad->tlsdplt = 0; |
| 4858 | |
| 4859 | /* If TLS descriptors took too much space, wrap an integral number |
| 4860 | of them around. */ |
| 4861 | if ((bfd_vma) gad->tmax > wrap) |
| 4862 | { |
| 4863 | bfd_vma wrapsize = gad->tmax - wrap; |
| 4864 | |
| 4865 | wrapsize += tdescsz / 2; |
| 4866 | wrapsize &= ~ tdescsz / 2; |
| 4867 | |
| 4868 | gad->tmin -= wrapsize; |
| 4869 | gad->tmax -= wrapsize; |
| 4870 | } |
| 4871 | |
| 4872 | /* If there is space left and we have function descriptors |
| 4873 | referenced in PLT entries that could take advantage of shorter |
| 4874 | offsets, place them now. */ |
| 4875 | if (fdplt && gad->tmin > wrapmin) |
| 4876 | { |
| 4877 | bfd_vma fds; |
| 4878 | |
| 4879 | if ((bfd_vma) (gad->tmin - wrapmin) < fdplt) |
| 4880 | fds = gad->tmin - wrapmin; |
| 4881 | else |
| 4882 | fds = fdplt; |
| 4883 | |
| 4884 | fdplt -= fds; |
| 4885 | gad->min -= fds; |
| 4886 | gad->tmin -= fds; |
| 4887 | gad->fdplt += fds; |
| 4888 | } |
| 4889 | |
| 4890 | /* If there is more space left, try to place some more function |
| 4891 | descriptors for PLT entries. */ |
| 4892 | if (fdplt && (bfd_vma) gad->tmax < wrap) |
| 4893 | { |
| 4894 | bfd_vma fds; |
| 4895 | |
| 4896 | if ((bfd_vma) (wrap - gad->tmax) < fdplt) |
| 4897 | fds = wrap - gad->tmax; |
| 4898 | else |
| 4899 | fds = fdplt; |
| 4900 | |
| 4901 | fdplt -= fds; |
| 4902 | gad->max += fds; |
| 4903 | gad->tmax += fds; |
| 4904 | gad->fdplt += fds; |
| 4905 | } |
| 4906 | |
| 4907 | /* If there is space left and we have TLS descriptors referenced in |
| 4908 | PLT entries that could take advantage of shorter offsets, place |
| 4909 | them now. */ |
| 4910 | if (tlsdplt && gad->tmin > wrapmin) |
| 4911 | { |
| 4912 | bfd_vma tlsds; |
| 4913 | |
| 4914 | if ((bfd_vma) (gad->tmin - wrapmin) < tlsdplt) |
| 4915 | tlsds = (gad->tmin - wrapmin) & ~ (tdescsz / 2); |
| 4916 | else |
| 4917 | tlsds = tlsdplt; |
| 4918 | |
| 4919 | tlsdplt -= tlsds; |
| 4920 | gad->tmin -= tlsds; |
| 4921 | gad->tlsdplt += tlsds; |
| 4922 | } |
| 4923 | |
| 4924 | /* If there is more space left, try to place some more TLS |
| 4925 | descriptors for PLT entries. Although we could try to fit an |
| 4926 | additional TLS descriptor with half of it just before before the |
| 4927 | wrap point and another right past the wrap point, this might |
| 4928 | cause us to run out of space for the next region, so don't do |
| 4929 | it. */ |
| 4930 | if (tlsdplt && (bfd_vma) gad->tmax < wrap - tdescsz / 2) |
| 4931 | { |
| 4932 | bfd_vma tlsds; |
| 4933 | |
| 4934 | if ((bfd_vma) (wrap - gad->tmax) < tlsdplt) |
| 4935 | tlsds = (wrap - gad->tmax) & ~ (tdescsz / 2); |
| 4936 | else |
| 4937 | tlsds = tlsdplt; |
| 4938 | |
| 4939 | tlsdplt -= tlsds; |
| 4940 | gad->tmax += tlsds; |
| 4941 | gad->tlsdplt += tlsds; |
| 4942 | } |
| 4943 | |
| 4944 | /* If odd was initially computed as an offset past the wrap point, |
| 4945 | wrap it around. */ |
| 4946 | if (odd > gad->max) |
| 4947 | odd = gad->min + odd - gad->max; |
| 4948 | |
| 4949 | /* _frvfdpic_get_got_entry() below will always wrap gad->cur if needed |
| 4950 | before returning, so do it here too. This guarantees that, |
| 4951 | should cur and fdcur meet at the wrap point, they'll both be |
| 4952 | equal to min. */ |
| 4953 | if (gad->cur == gad->max) |
| 4954 | gad->cur = gad->min; |
| 4955 | |
| 4956 | /* Ditto for _frvfdpic_get_tlsdesc_entry(). */ |
| 4957 | gad->tcur = gad->max; |
| 4958 | if (gad->tcur == gad->tmax) |
| 4959 | gad->tcur = gad->tmin; |
| 4960 | |
| 4961 | return odd; |
| 4962 | } |
| 4963 | |
| 4964 | /* Compute the location of the next GOT entry, given the allocation |
| 4965 | data for a range. */ |
| 4966 | |
| 4967 | inline static bfd_signed_vma |
| 4968 | _frvfdpic_get_got_entry (struct _frvfdpic_dynamic_got_alloc_data *gad) |
| 4969 | { |
| 4970 | bfd_signed_vma ret; |
| 4971 | |
| 4972 | if (gad->odd) |
| 4973 | { |
| 4974 | /* If there was an odd word left behind, use it. */ |
| 4975 | ret = gad->odd; |
| 4976 | gad->odd = 0; |
| 4977 | } |
| 4978 | else |
| 4979 | { |
| 4980 | /* Otherwise, use the word pointed to by cur, reserve the next |
| 4981 | as an odd word, and skip to the next pair of words, possibly |
| 4982 | wrapping around. */ |
| 4983 | ret = gad->cur; |
| 4984 | gad->odd = gad->cur + 4; |
| 4985 | gad->cur += 8; |
| 4986 | if (gad->cur == gad->max) |
| 4987 | gad->cur = gad->min; |
| 4988 | } |
| 4989 | |
| 4990 | return ret; |
| 4991 | } |
| 4992 | |
| 4993 | /* Compute the location of the next function descriptor entry in the |
| 4994 | GOT, given the allocation data for a range. */ |
| 4995 | |
| 4996 | inline static bfd_signed_vma |
| 4997 | _frvfdpic_get_fd_entry (struct _frvfdpic_dynamic_got_alloc_data *gad) |
| 4998 | { |
| 4999 | /* If we're at the bottom, wrap around, and only then allocate the |
| 5000 | next pair of words. */ |
| 5001 | if (gad->fdcur == gad->min) |
| 5002 | gad->fdcur = gad->max; |
| 5003 | return gad->fdcur -= 8; |
| 5004 | } |
| 5005 | |
| 5006 | /* Compute the location of the next TLS descriptor entry in the GOT, |
| 5007 | given the allocation data for a range. */ |
| 5008 | inline static bfd_signed_vma |
| 5009 | _frvfdpic_get_tlsdesc_entry (struct _frvfdpic_dynamic_got_alloc_data *gad) |
| 5010 | { |
| 5011 | bfd_signed_vma ret; |
| 5012 | |
| 5013 | ret = gad->tcur; |
| 5014 | |
| 5015 | gad->tcur += 8; |
| 5016 | |
| 5017 | /* If we're at the top of the region, wrap around to the bottom. */ |
| 5018 | if (gad->tcur == gad->tmax) |
| 5019 | gad->tcur = gad->tmin; |
| 5020 | |
| 5021 | return ret; |
| 5022 | } |
| 5023 | |
| 5024 | /* Assign GOT offsets for every GOT entry and function descriptor. |
| 5025 | Doing everything in a single pass is tricky. */ |
| 5026 | |
| 5027 | static int |
| 5028 | _frvfdpic_assign_got_entries (void **entryp, void *info_) |
| 5029 | { |
| 5030 | struct frvfdpic_relocs_info *entry = *entryp; |
| 5031 | struct _frvfdpic_dynamic_got_plt_info *dinfo = info_; |
| 5032 | |
| 5033 | if (entry->got12) |
| 5034 | entry->got_entry = _frvfdpic_get_got_entry (&dinfo->got12); |
| 5035 | else if (entry->gotlos) |
| 5036 | entry->got_entry = _frvfdpic_get_got_entry (&dinfo->gotlos); |
| 5037 | else if (entry->gothilo) |
| 5038 | entry->got_entry = _frvfdpic_get_got_entry (&dinfo->gothilo); |
| 5039 | |
| 5040 | if (entry->fdgot12) |
| 5041 | entry->fdgot_entry = _frvfdpic_get_got_entry (&dinfo->got12); |
| 5042 | else if (entry->fdgotlos) |
| 5043 | entry->fdgot_entry = _frvfdpic_get_got_entry (&dinfo->gotlos); |
| 5044 | else if (entry->fdgothilo) |
| 5045 | entry->fdgot_entry = _frvfdpic_get_got_entry (&dinfo->gothilo); |
| 5046 | |
| 5047 | if (entry->fdgoff12) |
| 5048 | entry->fd_entry = _frvfdpic_get_fd_entry (&dinfo->got12); |
| 5049 | else if (entry->plt && dinfo->got12.fdplt) |
| 5050 | { |
| 5051 | dinfo->got12.fdplt -= 8; |
| 5052 | entry->fd_entry = _frvfdpic_get_fd_entry (&dinfo->got12); |
| 5053 | } |
| 5054 | else if (entry->fdgofflos) |
| 5055 | entry->fd_entry = _frvfdpic_get_fd_entry (&dinfo->gotlos); |
| 5056 | else if (entry->plt && dinfo->gotlos.fdplt) |
| 5057 | { |
| 5058 | dinfo->gotlos.fdplt -= 8; |
| 5059 | entry->fd_entry = _frvfdpic_get_fd_entry (&dinfo->gotlos); |
| 5060 | } |
| 5061 | else if (entry->plt) |
| 5062 | { |
| 5063 | dinfo->gothilo.fdplt -= 8; |
| 5064 | entry->fd_entry = _frvfdpic_get_fd_entry (&dinfo->gothilo); |
| 5065 | } |
| 5066 | else if (entry->privfd) |
| 5067 | entry->fd_entry = _frvfdpic_get_fd_entry (&dinfo->gothilo); |
| 5068 | |
| 5069 | if (entry->tlsoff12) |
| 5070 | entry->tlsoff_entry = _frvfdpic_get_got_entry (&dinfo->got12); |
| 5071 | else if (entry->tlsofflos) |
| 5072 | entry->tlsoff_entry = _frvfdpic_get_got_entry (&dinfo->gotlos); |
| 5073 | else if (entry->tlsoffhilo) |
| 5074 | entry->tlsoff_entry = _frvfdpic_get_got_entry (&dinfo->gothilo); |
| 5075 | |
| 5076 | if (entry->tlsdesc12) |
| 5077 | entry->tlsdesc_entry = _frvfdpic_get_tlsdesc_entry (&dinfo->got12); |
| 5078 | else if (entry->tlsplt && dinfo->got12.tlsdplt) |
| 5079 | { |
| 5080 | dinfo->got12.tlsdplt -= 8; |
| 5081 | entry->tlsdesc_entry = _frvfdpic_get_tlsdesc_entry (&dinfo->got12); |
| 5082 | } |
| 5083 | else if (entry->tlsdesclos) |
| 5084 | entry->tlsdesc_entry = _frvfdpic_get_tlsdesc_entry (&dinfo->gotlos); |
| 5085 | else if (entry->tlsplt && dinfo->gotlos.tlsdplt) |
| 5086 | { |
| 5087 | dinfo->gotlos.tlsdplt -= 8; |
| 5088 | entry->tlsdesc_entry = _frvfdpic_get_tlsdesc_entry (&dinfo->gotlos); |
| 5089 | } |
| 5090 | else if (entry->tlsplt) |
| 5091 | { |
| 5092 | dinfo->gothilo.tlsdplt -= 8; |
| 5093 | entry->tlsdesc_entry = _frvfdpic_get_tlsdesc_entry (&dinfo->gothilo); |
| 5094 | } |
| 5095 | else if (entry->tlsdeschilo) |
| 5096 | entry->tlsdesc_entry = _frvfdpic_get_tlsdesc_entry (&dinfo->gothilo); |
| 5097 | |
| 5098 | return 1; |
| 5099 | } |
| 5100 | |
| 5101 | /* Assign GOT offsets to private function descriptors used by PLT |
| 5102 | entries (or referenced by 32-bit offsets), as well as PLT entries |
| 5103 | and lazy PLT entries. */ |
| 5104 | |
| 5105 | static int |
| 5106 | _frvfdpic_assign_plt_entries (void **entryp, void *info_) |
| 5107 | { |
| 5108 | struct frvfdpic_relocs_info *entry = *entryp; |
| 5109 | struct _frvfdpic_dynamic_got_plt_info *dinfo = info_; |
| 5110 | |
| 5111 | if (entry->privfd) |
| 5112 | BFD_ASSERT (entry->fd_entry); |
| 5113 | |
| 5114 | if (entry->plt) |
| 5115 | { |
| 5116 | int size; |
| 5117 | |
| 5118 | /* We use the section's raw size to mark the location of the |
| 5119 | next PLT entry. */ |
| 5120 | entry->plt_entry = frvfdpic_plt_section (dinfo->g.info)->size; |
| 5121 | |
| 5122 | /* Figure out the length of this PLT entry based on the |
| 5123 | addressing mode we need to reach the function descriptor. */ |
| 5124 | BFD_ASSERT (entry->fd_entry); |
| 5125 | if (entry->fd_entry >= -(1 << (12 - 1)) |
| 5126 | && entry->fd_entry < (1 << (12 - 1))) |
| 5127 | size = 8; |
| 5128 | else if (entry->fd_entry >= -(1 << (16 - 1)) |
| 5129 | && entry->fd_entry < (1 << (16 - 1))) |
| 5130 | size = 12; |
| 5131 | else |
| 5132 | size = 16; |
| 5133 | |
| 5134 | frvfdpic_plt_section (dinfo->g.info)->size += size; |
| 5135 | } |
| 5136 | |
| 5137 | if (entry->lazyplt) |
| 5138 | { |
| 5139 | entry->lzplt_entry = dinfo->g.lzplt; |
| 5140 | dinfo->g.lzplt += 8; |
| 5141 | /* If this entry is the one that gets the resolver stub, account |
| 5142 | for the additional instruction. */ |
| 5143 | if (entry->lzplt_entry % FRVFDPIC_LZPLT_BLOCK_SIZE |
| 5144 | == FRVFDPIC_LZPLT_RESOLV_LOC) |
| 5145 | dinfo->g.lzplt += 4; |
| 5146 | } |
| 5147 | |
| 5148 | if (entry->tlsplt) |
| 5149 | { |
| 5150 | int size; |
| 5151 | |
| 5152 | entry->tlsplt_entry |
| 5153 | = frvfdpic_plt_section (dinfo->g.info)->size; |
| 5154 | |
| 5155 | if (dinfo->g.info->executable |
| 5156 | && (entry->symndx != -1 |
| 5157 | || FRVFDPIC_SYM_LOCAL (dinfo->g.info, entry->d.h))) |
| 5158 | { |
| 5159 | if ((bfd_signed_vma)entry->addend >= -(1 << (16 - 1)) |
| 5160 | /* FIXME: here we use the size of the TLS section |
| 5161 | as an upper bound for the value of the TLS |
| 5162 | symbol, because we may not know the exact value |
| 5163 | yet. If we get it wrong, we'll just waste a |
| 5164 | word in the PLT, and we should never get even |
| 5165 | close to 32 KiB of TLS anyway. */ |
| 5166 | && elf_hash_table (dinfo->g.info)->tls_sec |
| 5167 | && (elf_hash_table (dinfo->g.info)->tls_sec->size |
| 5168 | + (bfd_signed_vma)(entry->addend) <= (1 << (16 - 1)))) |
| 5169 | size = 8; |
| 5170 | else |
| 5171 | size = 12; |
| 5172 | } |
| 5173 | else if (entry->tlsoff_entry) |
| 5174 | { |
| 5175 | if (entry->tlsoff_entry >= -(1 << (12 - 1)) |
| 5176 | && entry->tlsoff_entry < (1 << (12 - 1))) |
| 5177 | size = 8; |
| 5178 | else if (entry->tlsoff_entry >= -(1 << (16 - 1)) |
| 5179 | && entry->tlsoff_entry < (1 << (16 - 1))) |
| 5180 | size = 12; |
| 5181 | else |
| 5182 | size = 16; |
| 5183 | } |
| 5184 | else |
| 5185 | { |
| 5186 | BFD_ASSERT (entry->tlsdesc_entry); |
| 5187 | |
| 5188 | if (entry->tlsdesc_entry >= -(1 << (12 - 1)) |
| 5189 | && entry->tlsdesc_entry < (1 << (12 - 1))) |
| 5190 | size = 8; |
| 5191 | else if (entry->tlsdesc_entry >= -(1 << (16 - 1)) |
| 5192 | && entry->tlsdesc_entry < (1 << (16 - 1))) |
| 5193 | size = 12; |
| 5194 | else |
| 5195 | size = 16; |
| 5196 | } |
| 5197 | |
| 5198 | frvfdpic_plt_section (dinfo->g.info)->size += size; |
| 5199 | } |
| 5200 | |
| 5201 | return 1; |
| 5202 | } |
| 5203 | |
| 5204 | /* Cancel out any effects of calling _frvfdpic_assign_got_entries and |
| 5205 | _frvfdpic_assign_plt_entries. */ |
| 5206 | |
| 5207 | static int |
| 5208 | _frvfdpic_reset_got_plt_entries (void **entryp, void *ignore ATTRIBUTE_UNUSED) |
| 5209 | { |
| 5210 | struct frvfdpic_relocs_info *entry = *entryp; |
| 5211 | |
| 5212 | entry->got_entry = 0; |
| 5213 | entry->fdgot_entry = 0; |
| 5214 | entry->fd_entry = 0; |
| 5215 | entry->plt_entry = (bfd_vma)-1; |
| 5216 | entry->lzplt_entry = (bfd_vma)-1; |
| 5217 | entry->tlsoff_entry = 0; |
| 5218 | entry->tlsdesc_entry = 0; |
| 5219 | entry->tlsplt_entry = (bfd_vma)-1; |
| 5220 | |
| 5221 | return 1; |
| 5222 | } |
| 5223 | |
| 5224 | /* Follow indirect and warning hash entries so that each got entry |
| 5225 | points to the final symbol definition. P must point to a pointer |
| 5226 | to the hash table we're traversing. Since this traversal may |
| 5227 | modify the hash table, we set this pointer to NULL to indicate |
| 5228 | we've made a potentially-destructive change to the hash table, so |
| 5229 | the traversal must be restarted. */ |
| 5230 | static int |
| 5231 | _frvfdpic_resolve_final_relocs_info (void **entryp, void *p) |
| 5232 | { |
| 5233 | struct frvfdpic_relocs_info *entry = *entryp; |
| 5234 | htab_t *htab = p; |
| 5235 | |
| 5236 | if (entry->symndx == -1) |
| 5237 | { |
| 5238 | struct elf_link_hash_entry *h = entry->d.h; |
| 5239 | struct frvfdpic_relocs_info *oentry; |
| 5240 | |
| 5241 | while (h->root.type == bfd_link_hash_indirect |
| 5242 | || h->root.type == bfd_link_hash_warning) |
| 5243 | h = (struct elf_link_hash_entry *)h->root.u.i.link; |
| 5244 | |
| 5245 | if (entry->d.h == h) |
| 5246 | return 1; |
| 5247 | |
| 5248 | oentry = frvfdpic_relocs_info_for_global (*htab, 0, h, entry->addend, |
| 5249 | NO_INSERT); |
| 5250 | |
| 5251 | if (oentry) |
| 5252 | { |
| 5253 | /* Merge the two entries. */ |
| 5254 | frvfdpic_pic_merge_early_relocs_info (oentry, entry); |
| 5255 | htab_clear_slot (*htab, entryp); |
| 5256 | return 1; |
| 5257 | } |
| 5258 | |
| 5259 | entry->d.h = h; |
| 5260 | |
| 5261 | /* If we can't find this entry with the new bfd hash, re-insert |
| 5262 | it, and get the traversal restarted. */ |
| 5263 | if (! htab_find (*htab, entry)) |
| 5264 | { |
| 5265 | htab_clear_slot (*htab, entryp); |
| 5266 | entryp = htab_find_slot (*htab, entry, INSERT); |
| 5267 | if (! *entryp) |
| 5268 | *entryp = entry; |
| 5269 | /* Abort the traversal, since the whole table may have |
| 5270 | moved, and leave it up to the parent to restart the |
| 5271 | process. */ |
| 5272 | *(htab_t *)p = NULL; |
| 5273 | return 0; |
| 5274 | } |
| 5275 | } |
| 5276 | |
| 5277 | return 1; |
| 5278 | } |
| 5279 | |
| 5280 | /* Compute the total size of the GOT, the PLT, the dynamic relocations |
| 5281 | section and the rofixup section. Assign locations for GOT and PLT |
| 5282 | entries. */ |
| 5283 | |
| 5284 | static bfd_boolean |
| 5285 | _frvfdpic_size_got_plt (bfd *output_bfd, |
| 5286 | struct _frvfdpic_dynamic_got_plt_info *gpinfop) |
| 5287 | { |
| 5288 | bfd_signed_vma odd; |
| 5289 | bfd_vma limit, tlslimit; |
| 5290 | struct bfd_link_info *info = gpinfop->g.info; |
| 5291 | bfd *dynobj = elf_hash_table (info)->dynobj; |
| 5292 | |
| 5293 | memcpy (frvfdpic_dynamic_got_plt_info (info), &gpinfop->g, |
| 5294 | sizeof (gpinfop->g)); |
| 5295 | |
| 5296 | odd = 12; |
| 5297 | /* Compute the total size taken by entries in the 12-bit and 16-bit |
| 5298 | ranges, to tell how many PLT function descriptors we can bring |
| 5299 | into the 12-bit range without causing the 16-bit range to |
| 5300 | overflow. */ |
| 5301 | limit = odd + gpinfop->g.got12 + gpinfop->g.gotlos |
| 5302 | + gpinfop->g.fd12 + gpinfop->g.fdlos |
| 5303 | + gpinfop->g.tlsd12 + gpinfop->g.tlsdlos; |
| 5304 | if (limit < (bfd_vma)1 << 16) |
| 5305 | limit = ((bfd_vma)1 << 16) - limit; |
| 5306 | else |
| 5307 | limit = 0; |
| 5308 | if (gpinfop->g.fdplt < limit) |
| 5309 | { |
| 5310 | tlslimit = (limit - gpinfop->g.fdplt) & ~ (bfd_vma) 8; |
| 5311 | limit = gpinfop->g.fdplt; |
| 5312 | } |
| 5313 | else |
| 5314 | tlslimit = 0; |
| 5315 | if (gpinfop->g.tlsdplt < tlslimit) |
| 5316 | tlslimit = gpinfop->g.tlsdplt; |
| 5317 | |
| 5318 | /* Determine the ranges of GOT offsets that we can use for each |
| 5319 | range of addressing modes. */ |
| 5320 | odd = _frvfdpic_compute_got_alloc_data (&gpinfop->got12, |
| 5321 | 0, |
| 5322 | odd, |
| 5323 | 16, |
| 5324 | gpinfop->g.got12, |
| 5325 | gpinfop->g.fd12, |
| 5326 | limit, |
| 5327 | gpinfop->g.tlsd12, |
| 5328 | tlslimit, |
| 5329 | (bfd_vma)1 << (12-1)); |
| 5330 | odd = _frvfdpic_compute_got_alloc_data (&gpinfop->gotlos, |
| 5331 | gpinfop->got12.tmin, |
| 5332 | odd, |
| 5333 | gpinfop->got12.tmax, |
| 5334 | gpinfop->g.gotlos, |
| 5335 | gpinfop->g.fdlos, |
| 5336 | gpinfop->g.fdplt |
| 5337 | - gpinfop->got12.fdplt, |
| 5338 | gpinfop->g.tlsdlos, |
| 5339 | gpinfop->g.tlsdplt |
| 5340 | - gpinfop->got12.tlsdplt, |
| 5341 | (bfd_vma)1 << (16-1)); |
| 5342 | odd = _frvfdpic_compute_got_alloc_data (&gpinfop->gothilo, |
| 5343 | gpinfop->gotlos.tmin, |
| 5344 | odd, |
| 5345 | gpinfop->gotlos.tmax, |
| 5346 | gpinfop->g.gothilo, |
| 5347 | gpinfop->g.fdhilo, |
| 5348 | gpinfop->g.fdplt |
| 5349 | - gpinfop->got12.fdplt |
| 5350 | - gpinfop->gotlos.fdplt, |
| 5351 | gpinfop->g.tlsdhilo, |
| 5352 | gpinfop->g.tlsdplt |
| 5353 | - gpinfop->got12.tlsdplt |
| 5354 | - gpinfop->gotlos.tlsdplt, |
| 5355 | (bfd_vma)1 << (32-1)); |
| 5356 | |
| 5357 | /* Now assign (most) GOT offsets. */ |
| 5358 | htab_traverse (frvfdpic_relocs_info (info), _frvfdpic_assign_got_entries, |
| 5359 | gpinfop); |
| 5360 | |
| 5361 | frvfdpic_got_section (info)->size = gpinfop->gothilo.tmax |
| 5362 | - gpinfop->gothilo.tmin |
| 5363 | /* If an odd word is the last word of the GOT, we don't need this |
| 5364 | word to be part of the GOT. */ |
| 5365 | - (odd + 4 == gpinfop->gothilo.tmax ? 4 : 0); |
| 5366 | if (frvfdpic_got_section (info)->size == 0) |
| 5367 | frvfdpic_got_section (info)->flags |= SEC_EXCLUDE; |
| 5368 | else if (frvfdpic_got_section (info)->size == 12 |
| 5369 | && ! elf_hash_table (info)->dynamic_sections_created) |
| 5370 | { |
| 5371 | frvfdpic_got_section (info)->flags |= SEC_EXCLUDE; |
| 5372 | frvfdpic_got_section (info)->size = 0; |
| 5373 | } |
| 5374 | /* This will be non-NULL during relaxation. The assumption is that |
| 5375 | the size of one of these sections will never grow, only shrink, |
| 5376 | so we can use the larger buffer we allocated before. */ |
| 5377 | else if (frvfdpic_got_section (info)->contents == NULL) |
| 5378 | { |
| 5379 | frvfdpic_got_section (info)->contents = |
| 5380 | (bfd_byte *) bfd_zalloc (dynobj, |
| 5381 | frvfdpic_got_section (info)->size); |
| 5382 | if (frvfdpic_got_section (info)->contents == NULL) |
| 5383 | return FALSE; |
| 5384 | } |
| 5385 | |
| 5386 | if (frvfdpic_gotrel_section (info)) |
| 5387 | /* Subtract the number of lzplt entries, since those will generate |
| 5388 | relocations in the pltrel section. */ |
| 5389 | frvfdpic_gotrel_section (info)->size = |
| 5390 | (gpinfop->g.relocs - gpinfop->g.lzplt / 8) |
| 5391 | * get_elf_backend_data (output_bfd)->s->sizeof_rel; |
| 5392 | else |
| 5393 | BFD_ASSERT (gpinfop->g.relocs == 0); |
| 5394 | if (frvfdpic_gotrel_section (info)->size == 0) |
| 5395 | frvfdpic_gotrel_section (info)->flags |= SEC_EXCLUDE; |
| 5396 | else if (frvfdpic_gotrel_section (info)->contents == NULL) |
| 5397 | { |
| 5398 | frvfdpic_gotrel_section (info)->contents = |
| 5399 | (bfd_byte *) bfd_zalloc (dynobj, |
| 5400 | frvfdpic_gotrel_section (info)->size); |
| 5401 | if (frvfdpic_gotrel_section (info)->contents == NULL) |
| 5402 | return FALSE; |
| 5403 | } |
| 5404 | |
| 5405 | frvfdpic_gotfixup_section (info)->size = (gpinfop->g.fixups + 1) * 4; |
| 5406 | if (frvfdpic_gotfixup_section (info)->size == 0) |
| 5407 | frvfdpic_gotfixup_section (info)->flags |= SEC_EXCLUDE; |
| 5408 | else if (frvfdpic_gotfixup_section (info)->contents == NULL) |
| 5409 | { |
| 5410 | frvfdpic_gotfixup_section (info)->contents = |
| 5411 | (bfd_byte *) bfd_zalloc (dynobj, |
| 5412 | frvfdpic_gotfixup_section (info)->size); |
| 5413 | if (frvfdpic_gotfixup_section (info)->contents == NULL) |
| 5414 | return FALSE; |
| 5415 | } |
| 5416 | |
| 5417 | if (frvfdpic_pltrel_section (info)) |
| 5418 | { |
| 5419 | frvfdpic_pltrel_section (info)->size = |
| 5420 | gpinfop->g.lzplt / 8 |
| 5421 | * get_elf_backend_data (output_bfd)->s->sizeof_rel; |
| 5422 | if (frvfdpic_pltrel_section (info)->size == 0) |
| 5423 | frvfdpic_pltrel_section (info)->flags |= SEC_EXCLUDE; |
| 5424 | else if (frvfdpic_pltrel_section (info)->contents == NULL) |
| 5425 | { |
| 5426 | frvfdpic_pltrel_section (info)->contents = |
| 5427 | (bfd_byte *) bfd_zalloc (dynobj, |
| 5428 | frvfdpic_pltrel_section (info)->size); |
| 5429 | if (frvfdpic_pltrel_section (info)->contents == NULL) |
| 5430 | return FALSE; |
| 5431 | } |
| 5432 | } |
| 5433 | |
| 5434 | /* Add 4 bytes for every block of at most 65535 lazy PLT entries, |
| 5435 | such that there's room for the additional instruction needed to |
| 5436 | call the resolver. Since _frvfdpic_assign_got_entries didn't |
| 5437 | account for them, our block size is 4 bytes smaller than the real |
| 5438 | block size. */ |
| 5439 | if (frvfdpic_plt_section (info)) |
| 5440 | { |
| 5441 | frvfdpic_plt_section (info)->size = gpinfop->g.lzplt |
| 5442 | + ((gpinfop->g.lzplt + (FRVFDPIC_LZPLT_BLOCK_SIZE - 4) - 8) |
| 5443 | / (FRVFDPIC_LZPLT_BLOCK_SIZE - 4) * 4); |
| 5444 | } |
| 5445 | |
| 5446 | /* Reset it, such that _frvfdpic_assign_plt_entries() can use it to |
| 5447 | actually assign lazy PLT entries addresses. */ |
| 5448 | gpinfop->g.lzplt = 0; |
| 5449 | |
| 5450 | /* Save information that we're going to need to generate GOT and PLT |
| 5451 | entries. */ |
| 5452 | frvfdpic_got_initial_offset (info) = -gpinfop->gothilo.tmin; |
| 5453 | |
| 5454 | if (get_elf_backend_data (output_bfd)->want_got_sym) |
| 5455 | elf_hash_table (info)->hgot->root.u.def.value |
| 5456 | = frvfdpic_got_initial_offset (info); |
| 5457 | |
| 5458 | if (frvfdpic_plt_section (info)) |
| 5459 | frvfdpic_plt_initial_offset (info) = |
| 5460 | frvfdpic_plt_section (info)->size; |
| 5461 | |
| 5462 | /* Allocate a ret statement at plt_initial_offset, to be used by |
| 5463 | locally-resolved TLS descriptors. */ |
| 5464 | if (gpinfop->g.tls_ret_refs) |
| 5465 | frvfdpic_plt_section (info)->size += 4; |
| 5466 | |
| 5467 | htab_traverse (frvfdpic_relocs_info (info), _frvfdpic_assign_plt_entries, |
| 5468 | gpinfop); |
| 5469 | |
| 5470 | /* Allocate the PLT section contents only after |
| 5471 | _frvfdpic_assign_plt_entries has a chance to add the size of the |
| 5472 | non-lazy PLT entries. */ |
| 5473 | if (frvfdpic_plt_section (info)) |
| 5474 | { |
| 5475 | if (frvfdpic_plt_section (info)->size == 0) |
| 5476 | frvfdpic_plt_section (info)->flags |= SEC_EXCLUDE; |
| 5477 | else if (frvfdpic_plt_section (info)->contents == NULL) |
| 5478 | { |
| 5479 | frvfdpic_plt_section (info)->contents = |
| 5480 | (bfd_byte *) bfd_zalloc (dynobj, |
| 5481 | frvfdpic_plt_section (info)->size); |
| 5482 | if (frvfdpic_plt_section (info)->contents == NULL) |
| 5483 | return FALSE; |
| 5484 | } |
| 5485 | } |
| 5486 | |
| 5487 | return TRUE; |
| 5488 | } |
| 5489 | |
| 5490 | /* Set the sizes of the dynamic sections. */ |
| 5491 | |
| 5492 | static bfd_boolean |
| 5493 | elf32_frvfdpic_size_dynamic_sections (bfd *output_bfd, |
| 5494 | struct bfd_link_info *info) |
| 5495 | { |
| 5496 | bfd *dynobj; |
| 5497 | asection *s; |
| 5498 | struct _frvfdpic_dynamic_got_plt_info gpinfo; |
| 5499 | |
| 5500 | dynobj = elf_hash_table (info)->dynobj; |
| 5501 | BFD_ASSERT (dynobj != NULL); |
| 5502 | |
| 5503 | if (elf_hash_table (info)->dynamic_sections_created) |
| 5504 | { |
| 5505 | /* Set the contents of the .interp section to the interpreter. */ |
| 5506 | if (info->executable) |
| 5507 | { |
| 5508 | s = bfd_get_section_by_name (dynobj, ".interp"); |
| 5509 | BFD_ASSERT (s != NULL); |
| 5510 | s->size = sizeof ELF_DYNAMIC_INTERPRETER; |
| 5511 | s->contents = (bfd_byte *) ELF_DYNAMIC_INTERPRETER; |
| 5512 | } |
| 5513 | } |
| 5514 | |
| 5515 | memset (&gpinfo, 0, sizeof (gpinfo)); |
| 5516 | gpinfo.g.info = info; |
| 5517 | |
| 5518 | for (;;) |
| 5519 | { |
| 5520 | htab_t relocs = frvfdpic_relocs_info (info); |
| 5521 | |
| 5522 | htab_traverse (relocs, _frvfdpic_resolve_final_relocs_info, &relocs); |
| 5523 | |
| 5524 | if (relocs == frvfdpic_relocs_info (info)) |
| 5525 | break; |
| 5526 | } |
| 5527 | |
| 5528 | htab_traverse (frvfdpic_relocs_info (info), _frvfdpic_count_got_plt_entries, |
| 5529 | &gpinfo.g); |
| 5530 | |
| 5531 | /* Allocate space to save the summary information, we're going to |
| 5532 | use it if we're doing relaxations. */ |
| 5533 | frvfdpic_dynamic_got_plt_info (info) = bfd_alloc (dynobj, sizeof (gpinfo.g)); |
| 5534 | |
| 5535 | if (!_frvfdpic_size_got_plt (output_bfd, &gpinfo)) |
| 5536 | return FALSE; |
| 5537 | |
| 5538 | if (elf_hash_table (info)->dynamic_sections_created) |
| 5539 | { |
| 5540 | if (frvfdpic_got_section (info)->size) |
| 5541 | if (!_bfd_elf_add_dynamic_entry (info, DT_PLTGOT, 0)) |
| 5542 | return FALSE; |
| 5543 | |
| 5544 | if (frvfdpic_pltrel_section (info)->size) |
| 5545 | if (!_bfd_elf_add_dynamic_entry (info, DT_PLTRELSZ, 0) |
| 5546 | || !_bfd_elf_add_dynamic_entry (info, DT_PLTREL, DT_REL) |
| 5547 | || !_bfd_elf_add_dynamic_entry (info, DT_JMPREL, 0)) |
| 5548 | return FALSE; |
| 5549 | |
| 5550 | if (frvfdpic_gotrel_section (info)->size) |
| 5551 | if (!_bfd_elf_add_dynamic_entry (info, DT_REL, 0) |
| 5552 | || !_bfd_elf_add_dynamic_entry (info, DT_RELSZ, 0) |
| 5553 | || !_bfd_elf_add_dynamic_entry (info, DT_RELENT, |
| 5554 | sizeof (Elf32_External_Rel))) |
| 5555 | return FALSE; |
| 5556 | } |
| 5557 | |
| 5558 | return TRUE; |
| 5559 | } |
| 5560 | |
| 5561 | static bfd_boolean |
| 5562 | elf32_frvfdpic_always_size_sections (bfd *output_bfd, |
| 5563 | struct bfd_link_info *info) |
| 5564 | { |
| 5565 | if (!info->relocatable) |
| 5566 | { |
| 5567 | struct elf_link_hash_entry *h; |
| 5568 | |
| 5569 | /* Force a PT_GNU_STACK segment to be created. */ |
| 5570 | if (! elf_tdata (output_bfd)->stack_flags) |
| 5571 | elf_tdata (output_bfd)->stack_flags = PF_R | PF_W | PF_X; |
| 5572 | |
| 5573 | /* Define __stacksize if it's not defined yet. */ |
| 5574 | h = elf_link_hash_lookup (elf_hash_table (info), "__stacksize", |
| 5575 | FALSE, FALSE, FALSE); |
| 5576 | if (! h || h->root.type != bfd_link_hash_defined |
| 5577 | || h->type != STT_OBJECT |
| 5578 | || !h->def_regular) |
| 5579 | { |
| 5580 | struct bfd_link_hash_entry *bh = NULL; |
| 5581 | |
| 5582 | if (!(_bfd_generic_link_add_one_symbol |
| 5583 | (info, output_bfd, "__stacksize", |
| 5584 | BSF_GLOBAL, bfd_abs_section_ptr, DEFAULT_STACK_SIZE, |
| 5585 | (const char *) NULL, FALSE, |
| 5586 | get_elf_backend_data (output_bfd)->collect, &bh))) |
| 5587 | return FALSE; |
| 5588 | |
| 5589 | h = (struct elf_link_hash_entry *) bh; |
| 5590 | h->def_regular = 1; |
| 5591 | h->type = STT_OBJECT; |
| 5592 | /* This one must NOT be hidden. */ |
| 5593 | } |
| 5594 | } |
| 5595 | |
| 5596 | return TRUE; |
| 5597 | } |
| 5598 | |
| 5599 | /* Look for opportunities to relax TLS relocations. We can assume |
| 5600 | we're linking the main executable or a static-tls library, since |
| 5601 | otherwise we wouldn't have got here. */ |
| 5602 | |
| 5603 | static int |
| 5604 | _frvfdpic_relax_got_plt_entries (void **entryp, void *dinfo_) |
| 5605 | { |
| 5606 | struct frvfdpic_relocs_info *entry = *entryp; |
| 5607 | struct _frvfdpic_dynamic_got_info *dinfo = dinfo_; |
| 5608 | |
| 5609 | _frvfdpic_relax_tls_entries (entry, dinfo, TRUE); |
| 5610 | |
| 5611 | return 1; |
| 5612 | } |
| 5613 | |
| 5614 | static bfd_boolean |
| 5615 | elf32_frvfdpic_relax_section (bfd *abfd ATTRIBUTE_UNUSED, asection *sec, |
| 5616 | struct bfd_link_info *info, bfd_boolean *again) |
| 5617 | { |
| 5618 | struct _frvfdpic_dynamic_got_plt_info gpinfo; |
| 5619 | |
| 5620 | /* If we return early, we didn't change anything. */ |
| 5621 | *again = FALSE; |
| 5622 | |
| 5623 | /* We'll do our thing when requested to relax the GOT section. */ |
| 5624 | if (sec != frvfdpic_got_section (info)) |
| 5625 | return TRUE; |
| 5626 | |
| 5627 | /* We can only relax when linking the main executable or a library |
| 5628 | that can't be dlopened. */ |
| 5629 | if (! info->executable && ! (info->flags & DF_STATIC_TLS)) |
| 5630 | return TRUE; |
| 5631 | |
| 5632 | /* If there isn't a TLS section for this binary, we can't do |
| 5633 | anything about its TLS relocations (it probably doesn't have |
| 5634 | any. */ |
| 5635 | if (elf_hash_table (info)->tls_sec == NULL) |
| 5636 | return TRUE; |
| 5637 | |
| 5638 | memset (&gpinfo, 0, sizeof (gpinfo)); |
| 5639 | memcpy (&gpinfo.g, frvfdpic_dynamic_got_plt_info (info), sizeof (gpinfo.g)); |
| 5640 | |
| 5641 | /* Now look for opportunities to relax, adjusting the GOT usage |
| 5642 | as needed. */ |
| 5643 | htab_traverse (frvfdpic_relocs_info (info), |
| 5644 | _frvfdpic_relax_got_plt_entries, |
| 5645 | &gpinfo.g); |
| 5646 | |
| 5647 | /* If we changed anything, reset and re-assign GOT and PLT entries. */ |
| 5648 | if (memcmp (frvfdpic_dynamic_got_plt_info (info), |
| 5649 | &gpinfo.g, sizeof (gpinfo.g)) != 0) |
| 5650 | { |
| 5651 | /* Clear GOT and PLT assignments. */ |
| 5652 | htab_traverse (frvfdpic_relocs_info (info), |
| 5653 | _frvfdpic_reset_got_plt_entries, |
| 5654 | NULL); |
| 5655 | |
| 5656 | /* The owner of the TLS section is the output bfd. There should |
| 5657 | be a better way to get to it. */ |
| 5658 | if (!_frvfdpic_size_got_plt (elf_hash_table (info)->tls_sec->owner, |
| 5659 | &gpinfo)) |
| 5660 | return FALSE; |
| 5661 | |
| 5662 | /* Repeat until we don't make any further changes. We could fail to |
| 5663 | introduce changes in a round if, for example, the 12-bit range is |
| 5664 | full, but we later release some space by getting rid of TLS |
| 5665 | descriptors in it. We have to repeat the whole process because |
| 5666 | we might have changed the size of a section processed before this |
| 5667 | one. */ |
| 5668 | *again = TRUE; |
| 5669 | } |
| 5670 | |
| 5671 | return TRUE; |
| 5672 | } |
| 5673 | |
| 5674 | static bfd_boolean |
| 5675 | elf32_frvfdpic_modify_program_headers (bfd *output_bfd, |
| 5676 | struct bfd_link_info *info) |
| 5677 | { |
| 5678 | struct elf_obj_tdata *tdata = elf_tdata (output_bfd); |
| 5679 | struct elf_segment_map *m; |
| 5680 | Elf_Internal_Phdr *p; |
| 5681 | |
| 5682 | /* objcopy and strip preserve what's already there using |
| 5683 | elf32_frvfdpic_copy_private_bfd_data (). */ |
| 5684 | if (! info) |
| 5685 | return TRUE; |
| 5686 | |
| 5687 | for (p = tdata->phdr, m = tdata->segment_map; m != NULL; m = m->next, p++) |
| 5688 | if (m->p_type == PT_GNU_STACK) |
| 5689 | break; |
| 5690 | |
| 5691 | if (m) |
| 5692 | { |
| 5693 | struct elf_link_hash_entry *h; |
| 5694 | |
| 5695 | /* Obtain the pointer to the __stacksize symbol. */ |
| 5696 | h = elf_link_hash_lookup (elf_hash_table (info), "__stacksize", |
| 5697 | FALSE, FALSE, FALSE); |
| 5698 | if (h) |
| 5699 | { |
| 5700 | while (h->root.type == bfd_link_hash_indirect |
| 5701 | || h->root.type == bfd_link_hash_warning) |
| 5702 | h = (struct elf_link_hash_entry *) h->root.u.i.link; |
| 5703 | BFD_ASSERT (h->root.type == bfd_link_hash_defined); |
| 5704 | } |
| 5705 | |
| 5706 | /* Set the header p_memsz from the symbol value. We |
| 5707 | intentionally ignore the symbol section. */ |
| 5708 | if (h && h->root.type == bfd_link_hash_defined) |
| 5709 | p->p_memsz = h->root.u.def.value; |
| 5710 | else |
| 5711 | p->p_memsz = DEFAULT_STACK_SIZE; |
| 5712 | |
| 5713 | p->p_align = 8; |
| 5714 | } |
| 5715 | |
| 5716 | return TRUE; |
| 5717 | } |
| 5718 | |
| 5719 | /* Fill in code and data in dynamic sections. */ |
| 5720 | |
| 5721 | static bfd_boolean |
| 5722 | elf32_frv_finish_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED, |
| 5723 | struct bfd_link_info *info ATTRIBUTE_UNUSED) |
| 5724 | { |
| 5725 | /* Nothing to be done for non-FDPIC. */ |
| 5726 | return TRUE; |
| 5727 | } |
| 5728 | |
| 5729 | static bfd_boolean |
| 5730 | elf32_frvfdpic_finish_dynamic_sections (bfd *output_bfd, |
| 5731 | struct bfd_link_info *info) |
| 5732 | { |
| 5733 | bfd *dynobj; |
| 5734 | asection *sdyn; |
| 5735 | |
| 5736 | dynobj = elf_hash_table (info)->dynobj; |
| 5737 | |
| 5738 | if (frvfdpic_dynamic_got_plt_info (info)) |
| 5739 | { |
| 5740 | BFD_ASSERT (frvfdpic_dynamic_got_plt_info (info)->tls_ret_refs == 0); |
| 5741 | } |
| 5742 | if (frvfdpic_got_section (info)) |
| 5743 | { |
| 5744 | BFD_ASSERT (frvfdpic_gotrel_section (info)->size |
| 5745 | == (frvfdpic_gotrel_section (info)->reloc_count |
| 5746 | * sizeof (Elf32_External_Rel))); |
| 5747 | |
| 5748 | if (frvfdpic_gotfixup_section (info)) |
| 5749 | { |
| 5750 | struct elf_link_hash_entry *hgot = elf_hash_table (info)->hgot; |
| 5751 | bfd_vma got_value = hgot->root.u.def.value |
| 5752 | + hgot->root.u.def.section->output_section->vma |
| 5753 | + hgot->root.u.def.section->output_offset; |
| 5754 | struct bfd_link_hash_entry *hend; |
| 5755 | |
| 5756 | _frvfdpic_add_rofixup (output_bfd, frvfdpic_gotfixup_section (info), |
| 5757 | got_value, 0); |
| 5758 | |
| 5759 | if (frvfdpic_gotfixup_section (info)->size |
| 5760 | != (frvfdpic_gotfixup_section (info)->reloc_count * 4)) |
| 5761 | { |
| 5762 | error: |
| 5763 | (*_bfd_error_handler) |
| 5764 | ("LINKER BUG: .rofixup section size mismatch"); |
| 5765 | return FALSE; |
| 5766 | } |
| 5767 | |
| 5768 | hend = bfd_link_hash_lookup (info->hash, "__ROFIXUP_END__", |
| 5769 | FALSE, FALSE, TRUE); |
| 5770 | if (hend |
| 5771 | && (hend->type == bfd_link_hash_defined |
| 5772 | || hend->type == bfd_link_hash_defweak)) |
| 5773 | { |
| 5774 | bfd_vma value = |
| 5775 | frvfdpic_gotfixup_section (info)->output_section->vma |
| 5776 | + frvfdpic_gotfixup_section (info)->output_offset |
| 5777 | + frvfdpic_gotfixup_section (info)->size |
| 5778 | - hend->u.def.section->output_section->vma |
| 5779 | - hend->u.def.section->output_offset; |
| 5780 | BFD_ASSERT (hend->u.def.value == value); |
| 5781 | if (hend->u.def.value != value) |
| 5782 | goto error; |
| 5783 | } |
| 5784 | } |
| 5785 | } |
| 5786 | if (frvfdpic_pltrel_section (info)) |
| 5787 | { |
| 5788 | BFD_ASSERT (frvfdpic_pltrel_section (info)->size |
| 5789 | == (frvfdpic_pltrel_section (info)->reloc_count |
| 5790 | * sizeof (Elf32_External_Rel))); |
| 5791 | } |
| 5792 | |
| 5793 | |
| 5794 | if (elf_hash_table (info)->dynamic_sections_created) |
| 5795 | { |
| 5796 | Elf32_External_Dyn * dyncon; |
| 5797 | Elf32_External_Dyn * dynconend; |
| 5798 | |
| 5799 | sdyn = bfd_get_section_by_name (dynobj, ".dynamic"); |
| 5800 | |
| 5801 | BFD_ASSERT (sdyn != NULL); |
| 5802 | |
| 5803 | dyncon = (Elf32_External_Dyn *) sdyn->contents; |
| 5804 | dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size); |
| 5805 | |
| 5806 | for (; dyncon < dynconend; dyncon++) |
| 5807 | { |
| 5808 | Elf_Internal_Dyn dyn; |
| 5809 | |
| 5810 | bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn); |
| 5811 | |
| 5812 | switch (dyn.d_tag) |
| 5813 | { |
| 5814 | default: |
| 5815 | break; |
| 5816 | |
| 5817 | case DT_PLTGOT: |
| 5818 | dyn.d_un.d_ptr = frvfdpic_got_section (info)->output_section->vma |
| 5819 | + frvfdpic_got_section (info)->output_offset |
| 5820 | + frvfdpic_got_initial_offset (info); |
| 5821 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); |
| 5822 | break; |
| 5823 | |
| 5824 | case DT_JMPREL: |
| 5825 | dyn.d_un.d_ptr = frvfdpic_pltrel_section (info) |
| 5826 | ->output_section->vma |
| 5827 | + frvfdpic_pltrel_section (info)->output_offset; |
| 5828 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); |
| 5829 | break; |
| 5830 | |
| 5831 | case DT_PLTRELSZ: |
| 5832 | dyn.d_un.d_val = frvfdpic_pltrel_section (info)->size; |
| 5833 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); |
| 5834 | break; |
| 5835 | } |
| 5836 | } |
| 5837 | } |
| 5838 | |
| 5839 | return TRUE; |
| 5840 | } |
| 5841 | |
| 5842 | /* Adjust a symbol defined by a dynamic object and referenced by a |
| 5843 | regular object. */ |
| 5844 | |
| 5845 | static bfd_boolean |
| 5846 | elf32_frvfdpic_adjust_dynamic_symbol |
| 5847 | (struct bfd_link_info *info ATTRIBUTE_UNUSED, |
| 5848 | struct elf_link_hash_entry *h ATTRIBUTE_UNUSED) |
| 5849 | { |
| 5850 | bfd * dynobj; |
| 5851 | |
| 5852 | dynobj = elf_hash_table (info)->dynobj; |
| 5853 | |
| 5854 | /* Make sure we know what is going on here. */ |
| 5855 | BFD_ASSERT (dynobj != NULL |
| 5856 | && (h->u.weakdef != NULL |
| 5857 | || (h->def_dynamic |
| 5858 | && h->ref_regular |
| 5859 | && !h->def_regular))); |
| 5860 | |
| 5861 | /* If this is a weak symbol, and there is a real definition, the |
| 5862 | processor independent code will have arranged for us to see the |
| 5863 | real definition first, and we can just use the same value. */ |
| 5864 | if (h->u.weakdef != NULL) |
| 5865 | { |
| 5866 | BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined |
| 5867 | || h->u.weakdef->root.type == bfd_link_hash_defweak); |
| 5868 | h->root.u.def.section = h->u.weakdef->root.u.def.section; |
| 5869 | h->root.u.def.value = h->u.weakdef->root.u.def.value; |
| 5870 | } |
| 5871 | |
| 5872 | return TRUE; |
| 5873 | } |
| 5874 | |
| 5875 | /* Perform any actions needed for dynamic symbols. */ |
| 5876 | |
| 5877 | static bfd_boolean |
| 5878 | elf32_frvfdpic_finish_dynamic_symbol |
| 5879 | (bfd *output_bfd ATTRIBUTE_UNUSED, |
| 5880 | struct bfd_link_info *info ATTRIBUTE_UNUSED, |
| 5881 | struct elf_link_hash_entry *h ATTRIBUTE_UNUSED, |
| 5882 | Elf_Internal_Sym *sym ATTRIBUTE_UNUSED) |
| 5883 | { |
| 5884 | return TRUE; |
| 5885 | } |
| 5886 | |
| 5887 | /* Decide whether to attempt to turn absptr or lsda encodings in |
| 5888 | shared libraries into pcrel within the given input section. */ |
| 5889 | |
| 5890 | static bfd_boolean |
| 5891 | frvfdpic_elf_use_relative_eh_frame |
| 5892 | (bfd *input_bfd ATTRIBUTE_UNUSED, |
| 5893 | struct bfd_link_info *info ATTRIBUTE_UNUSED, |
| 5894 | asection *eh_frame_section ATTRIBUTE_UNUSED) |
| 5895 | { |
| 5896 | /* We can't use PC-relative encodings in FDPIC binaries, in general. */ |
| 5897 | return FALSE; |
| 5898 | } |
| 5899 | |
| 5900 | /* Adjust the contents of an eh_frame_hdr section before they're output. */ |
| 5901 | |
| 5902 | static bfd_byte |
| 5903 | frvfdpic_elf_encode_eh_address (bfd *abfd, |
| 5904 | struct bfd_link_info *info, |
| 5905 | asection *osec, bfd_vma offset, |
| 5906 | asection *loc_sec, bfd_vma loc_offset, |
| 5907 | bfd_vma *encoded) |
| 5908 | { |
| 5909 | struct elf_link_hash_entry *h; |
| 5910 | |
| 5911 | h = elf_hash_table (info)->hgot; |
| 5912 | BFD_ASSERT (h && h->root.type == bfd_link_hash_defined); |
| 5913 | |
| 5914 | if (! h || (_frvfdpic_osec_to_segment (abfd, osec) |
| 5915 | == _frvfdpic_osec_to_segment (abfd, loc_sec->output_section))) |
| 5916 | return _bfd_elf_encode_eh_address (abfd, info, osec, offset, |
| 5917 | loc_sec, loc_offset, encoded); |
| 5918 | |
| 5919 | BFD_ASSERT (_frvfdpic_osec_to_segment (abfd, osec) |
| 5920 | == (_frvfdpic_osec_to_segment |
| 5921 | (abfd, h->root.u.def.section->output_section))); |
| 5922 | |
| 5923 | *encoded = osec->vma + offset |
| 5924 | - (h->root.u.def.value |
| 5925 | + h->root.u.def.section->output_section->vma |
| 5926 | + h->root.u.def.section->output_offset); |
| 5927 | |
| 5928 | return DW_EH_PE_datarel | DW_EH_PE_sdata4; |
| 5929 | } |
| 5930 | |
| 5931 | /* Look through the relocs for a section during the first phase. |
| 5932 | |
| 5933 | Besides handling virtual table relocs for gc, we have to deal with |
| 5934 | all sorts of PIC-related relocations. We describe below the |
| 5935 | general plan on how to handle such relocations, even though we only |
| 5936 | collect information at this point, storing them in hash tables for |
| 5937 | perusal of later passes. |
| 5938 | |
| 5939 | 32 relocations are propagated to the linker output when creating |
| 5940 | position-independent output. LO16 and HI16 relocations are not |
| 5941 | supposed to be encountered in this case. |
| 5942 | |
| 5943 | LABEL16 should always be resolvable by the linker, since it's only |
| 5944 | used by branches. |
| 5945 | |
| 5946 | LABEL24, on the other hand, is used by calls. If it turns out that |
| 5947 | the target of a call is a dynamic symbol, a PLT entry must be |
| 5948 | created for it, which triggers the creation of a private function |
| 5949 | descriptor and, unless lazy binding is disabled, a lazy PLT entry. |
| 5950 | |
| 5951 | GPREL relocations require the referenced symbol to be in the same |
| 5952 | segment as _gp, but this can only be checked later. |
| 5953 | |
| 5954 | All GOT, GOTOFF and FUNCDESC relocations require a .got section to |
| 5955 | exist. LABEL24 might as well, since it may require a PLT entry, |
| 5956 | that will require a got. |
| 5957 | |
| 5958 | Non-FUNCDESC GOT relocations require a GOT entry to be created |
| 5959 | regardless of whether the symbol is dynamic. However, since a |
| 5960 | global symbol that turns out to not be exported may have the same |
| 5961 | address of a non-dynamic symbol, we don't assign GOT entries at |
| 5962 | this point, such that we can share them in this case. A relocation |
| 5963 | for the GOT entry always has to be created, be it to offset a |
| 5964 | private symbol by the section load address, be it to get the symbol |
| 5965 | resolved dynamically. |
| 5966 | |
| 5967 | FUNCDESC GOT relocations require a GOT entry to be created, and |
| 5968 | handled as if a FUNCDESC relocation was applied to the GOT entry in |
| 5969 | an object file. |
| 5970 | |
| 5971 | FUNCDESC relocations referencing a symbol that turns out to NOT be |
| 5972 | dynamic cause a private function descriptor to be created. The |
| 5973 | FUNCDESC relocation then decays to a 32 relocation that points at |
| 5974 | the private descriptor. If the symbol is dynamic, the FUNCDESC |
| 5975 | relocation is propagated to the linker output, such that the |
| 5976 | dynamic linker creates the canonical descriptor, pointing to the |
| 5977 | dynamically-resolved definition of the function. |
| 5978 | |
| 5979 | Non-FUNCDESC GOTOFF relocations must always refer to non-dynamic |
| 5980 | symbols that are assigned to the same segment as the GOT, but we |
| 5981 | can only check this later, after we know the complete set of |
| 5982 | symbols defined and/or exported. |
| 5983 | |
| 5984 | FUNCDESC GOTOFF relocations require a function descriptor to be |
| 5985 | created and, unless lazy binding is disabled or the symbol is not |
| 5986 | dynamic, a lazy PLT entry. Since we can't tell at this point |
| 5987 | whether a symbol is going to be dynamic, we have to decide later |
| 5988 | whether to create a lazy PLT entry or bind the descriptor directly |
| 5989 | to the private function. |
| 5990 | |
| 5991 | FUNCDESC_VALUE relocations are not supposed to be present in object |
| 5992 | files, but they may very well be simply propagated to the linker |
| 5993 | output, since they have no side effect. |
| 5994 | |
| 5995 | |
| 5996 | A function descriptor always requires a FUNCDESC_VALUE relocation. |
| 5997 | Whether it's in .plt.rel or not depends on whether lazy binding is |
| 5998 | enabled and on whether the referenced symbol is dynamic. |
| 5999 | |
| 6000 | The existence of a lazy PLT requires the resolverStub lazy PLT |
| 6001 | entry to be present. |
| 6002 | |
| 6003 | |
| 6004 | As for assignment of GOT, PLT and lazy PLT entries, and private |
| 6005 | descriptors, we might do them all sequentially, but we can do |
| 6006 | better than that. For example, we can place GOT entries and |
| 6007 | private function descriptors referenced using 12-bit operands |
| 6008 | closer to the PIC register value, such that these relocations don't |
| 6009 | overflow. Those that are only referenced with LO16 relocations |
| 6010 | could come next, but we may as well place PLT-required function |
| 6011 | descriptors in the 12-bit range to make them shorter. Symbols |
| 6012 | referenced with LO16/HI16 may come next, but we may place |
| 6013 | additional function descriptors in the 16-bit range if we can |
| 6014 | reliably tell that we've already placed entries that are ever |
| 6015 | referenced with only LO16. PLT entries are therefore generated as |
| 6016 | small as possible, while not introducing relocation overflows in |
| 6017 | GOT or FUNCDESC_GOTOFF relocations. Lazy PLT entries could be |
| 6018 | generated before or after PLT entries, but not intermingled with |
| 6019 | them, such that we can have more lazy PLT entries in range for a |
| 6020 | branch to the resolverStub. The resolverStub should be emitted at |
| 6021 | the most distant location from the first lazy PLT entry such that |
| 6022 | it's still in range for a branch, or closer, if there isn't a need |
| 6023 | for so many lazy PLT entries. Additional lazy PLT entries may be |
| 6024 | emitted after the resolverStub, as long as branches are still in |
| 6025 | range. If the branch goes out of range, longer lazy PLT entries |
| 6026 | are emitted. |
| 6027 | |
| 6028 | We could further optimize PLT and lazy PLT entries by giving them |
| 6029 | priority in assignment to closer-to-gr17 locations depending on the |
| 6030 | number of occurrences of references to them (assuming a function |
| 6031 | that's called more often is more important for performance, so its |
| 6032 | PLT entry should be faster), or taking hints from the compiler. |
| 6033 | Given infinite time and money... :-) */ |
| 6034 | |
| 6035 | static bfd_boolean |
| 6036 | elf32_frv_check_relocs (abfd, info, sec, relocs) |
| 6037 | bfd *abfd; |
| 6038 | struct bfd_link_info *info; |
| 6039 | asection *sec; |
| 6040 | const Elf_Internal_Rela *relocs; |
| 6041 | { |
| 6042 | Elf_Internal_Shdr *symtab_hdr; |
| 6043 | struct elf_link_hash_entry **sym_hashes, **sym_hashes_end; |
| 6044 | const Elf_Internal_Rela *rel; |
| 6045 | const Elf_Internal_Rela *rel_end; |
| 6046 | bfd *dynobj; |
| 6047 | struct frvfdpic_relocs_info *picrel; |
| 6048 | |
| 6049 | if (info->relocatable) |
| 6050 | return TRUE; |
| 6051 | |
| 6052 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; |
| 6053 | sym_hashes = elf_sym_hashes (abfd); |
| 6054 | sym_hashes_end = sym_hashes + symtab_hdr->sh_size/sizeof(Elf32_External_Sym); |
| 6055 | if (!elf_bad_symtab (abfd)) |
| 6056 | sym_hashes_end -= symtab_hdr->sh_info; |
| 6057 | |
| 6058 | dynobj = elf_hash_table (info)->dynobj; |
| 6059 | rel_end = relocs + sec->reloc_count; |
| 6060 | for (rel = relocs; rel < rel_end; rel++) |
| 6061 | { |
| 6062 | struct elf_link_hash_entry *h; |
| 6063 | unsigned long r_symndx; |
| 6064 | |
| 6065 | r_symndx = ELF32_R_SYM (rel->r_info); |
| 6066 | if (r_symndx < symtab_hdr->sh_info) |
| 6067 | h = NULL; |
| 6068 | else |
| 6069 | { |
| 6070 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; |
| 6071 | while (h->root.type == bfd_link_hash_indirect |
| 6072 | || h->root.type == bfd_link_hash_warning) |
| 6073 | h = (struct elf_link_hash_entry *) h->root.u.i.link; |
| 6074 | } |
| 6075 | |
| 6076 | switch (ELF32_R_TYPE (rel->r_info)) |
| 6077 | { |
| 6078 | case R_FRV_GETTLSOFF: |
| 6079 | case R_FRV_TLSDESC_VALUE: |
| 6080 | case R_FRV_GOTTLSDESC12: |
| 6081 | case R_FRV_GOTTLSDESCHI: |
| 6082 | case R_FRV_GOTTLSDESCLO: |
| 6083 | case R_FRV_GOTTLSOFF12: |
| 6084 | case R_FRV_GOTTLSOFFHI: |
| 6085 | case R_FRV_GOTTLSOFFLO: |
| 6086 | case R_FRV_TLSOFF: |
| 6087 | case R_FRV_GOT12: |
| 6088 | case R_FRV_GOTHI: |
| 6089 | case R_FRV_GOTLO: |
| 6090 | case R_FRV_FUNCDESC_GOT12: |
| 6091 | case R_FRV_FUNCDESC_GOTHI: |
| 6092 | case R_FRV_FUNCDESC_GOTLO: |
| 6093 | case R_FRV_GOTOFF12: |
| 6094 | case R_FRV_GOTOFFHI: |
| 6095 | case R_FRV_GOTOFFLO: |
| 6096 | case R_FRV_FUNCDESC_GOTOFF12: |
| 6097 | case R_FRV_FUNCDESC_GOTOFFHI: |
| 6098 | case R_FRV_FUNCDESC_GOTOFFLO: |
| 6099 | case R_FRV_FUNCDESC: |
| 6100 | case R_FRV_FUNCDESC_VALUE: |
| 6101 | case R_FRV_TLSMOFF12: |
| 6102 | case R_FRV_TLSMOFFHI: |
| 6103 | case R_FRV_TLSMOFFLO: |
| 6104 | case R_FRV_TLSMOFF: |
| 6105 | if (! IS_FDPIC (abfd)) |
| 6106 | goto bad_reloc; |
| 6107 | /* Fall through. */ |
| 6108 | case R_FRV_GPREL12: |
| 6109 | case R_FRV_GPRELU12: |
| 6110 | case R_FRV_GPRELHI: |
| 6111 | case R_FRV_GPRELLO: |
| 6112 | case R_FRV_LABEL24: |
| 6113 | case R_FRV_32: |
| 6114 | if (! dynobj) |
| 6115 | { |
| 6116 | elf_hash_table (info)->dynobj = dynobj = abfd; |
| 6117 | if (! _frv_create_got_section (abfd, info)) |
| 6118 | return FALSE; |
| 6119 | } |
| 6120 | if (! IS_FDPIC (abfd)) |
| 6121 | { |
| 6122 | picrel = NULL; |
| 6123 | break; |
| 6124 | } |
| 6125 | if (h != NULL) |
| 6126 | { |
| 6127 | if (h->dynindx == -1) |
| 6128 | switch (ELF_ST_VISIBILITY (h->other)) |
| 6129 | { |
| 6130 | case STV_INTERNAL: |
| 6131 | case STV_HIDDEN: |
| 6132 | break; |
| 6133 | default: |
| 6134 | bfd_elf_link_record_dynamic_symbol (info, h); |
| 6135 | break; |
| 6136 | } |
| 6137 | picrel |
| 6138 | = frvfdpic_relocs_info_for_global (frvfdpic_relocs_info (info), |
| 6139 | abfd, h, |
| 6140 | rel->r_addend, INSERT); |
| 6141 | } |
| 6142 | else |
| 6143 | picrel = frvfdpic_relocs_info_for_local (frvfdpic_relocs_info |
| 6144 | (info), abfd, r_symndx, |
| 6145 | rel->r_addend, INSERT); |
| 6146 | if (! picrel) |
| 6147 | return FALSE; |
| 6148 | break; |
| 6149 | |
| 6150 | default: |
| 6151 | picrel = NULL; |
| 6152 | break; |
| 6153 | } |
| 6154 | |
| 6155 | switch (ELF32_R_TYPE (rel->r_info)) |
| 6156 | { |
| 6157 | case R_FRV_LABEL24: |
| 6158 | if (IS_FDPIC (abfd)) |
| 6159 | picrel->call = 1; |
| 6160 | break; |
| 6161 | |
| 6162 | case R_FRV_FUNCDESC_VALUE: |
| 6163 | picrel->relocsfdv++; |
| 6164 | if (bfd_get_section_flags (abfd, sec) & SEC_ALLOC) |
| 6165 | picrel->relocs32--; |
| 6166 | /* Fall through. */ |
| 6167 | |
| 6168 | case R_FRV_32: |
| 6169 | if (! IS_FDPIC (abfd)) |
| 6170 | break; |
| 6171 | |
| 6172 | picrel->sym = 1; |
| 6173 | if (bfd_get_section_flags (abfd, sec) & SEC_ALLOC) |
| 6174 | picrel->relocs32++; |
| 6175 | break; |
| 6176 | |
| 6177 | case R_FRV_GOT12: |
| 6178 | picrel->got12 = 1; |
| 6179 | break; |
| 6180 | |
| 6181 | case R_FRV_GOTHI: |
| 6182 | case R_FRV_GOTLO: |
| 6183 | picrel->gothilo = 1; |
| 6184 | break; |
| 6185 | |
| 6186 | case R_FRV_FUNCDESC_GOT12: |
| 6187 | picrel->fdgot12 = 1; |
| 6188 | break; |
| 6189 | |
| 6190 | case R_FRV_FUNCDESC_GOTHI: |
| 6191 | case R_FRV_FUNCDESC_GOTLO: |
| 6192 | picrel->fdgothilo = 1; |
| 6193 | break; |
| 6194 | |
| 6195 | case R_FRV_GOTOFF12: |
| 6196 | case R_FRV_GOTOFFHI: |
| 6197 | case R_FRV_GOTOFFLO: |
| 6198 | picrel->gotoff = 1; |
| 6199 | break; |
| 6200 | |
| 6201 | case R_FRV_FUNCDESC_GOTOFF12: |
| 6202 | picrel->fdgoff12 = 1; |
| 6203 | break; |
| 6204 | |
| 6205 | case R_FRV_FUNCDESC_GOTOFFHI: |
| 6206 | case R_FRV_FUNCDESC_GOTOFFLO: |
| 6207 | picrel->fdgoffhilo = 1; |
| 6208 | break; |
| 6209 | |
| 6210 | case R_FRV_FUNCDESC: |
| 6211 | picrel->fd = 1; |
| 6212 | picrel->relocsfd++; |
| 6213 | break; |
| 6214 | |
| 6215 | case R_FRV_GETTLSOFF: |
| 6216 | picrel->tlsplt = 1; |
| 6217 | break; |
| 6218 | |
| 6219 | case R_FRV_TLSDESC_VALUE: |
| 6220 | picrel->relocstlsd++; |
| 6221 | goto bad_reloc; |
| 6222 | |
| 6223 | case R_FRV_GOTTLSDESC12: |
| 6224 | picrel->tlsdesc12 = 1; |
| 6225 | break; |
| 6226 | |
| 6227 | case R_FRV_GOTTLSDESCHI: |
| 6228 | case R_FRV_GOTTLSDESCLO: |
| 6229 | picrel->tlsdeschilo = 1; |
| 6230 | break; |
| 6231 | |
| 6232 | case R_FRV_TLSMOFF12: |
| 6233 | case R_FRV_TLSMOFFHI: |
| 6234 | case R_FRV_TLSMOFFLO: |
| 6235 | case R_FRV_TLSMOFF: |
| 6236 | break; |
| 6237 | |
| 6238 | case R_FRV_GOTTLSOFF12: |
| 6239 | picrel->tlsoff12 = 1; |
| 6240 | info->flags |= DF_STATIC_TLS; |
| 6241 | break; |
| 6242 | |
| 6243 | case R_FRV_GOTTLSOFFHI: |
| 6244 | case R_FRV_GOTTLSOFFLO: |
| 6245 | picrel->tlsoffhilo = 1; |
| 6246 | info->flags |= DF_STATIC_TLS; |
| 6247 | break; |
| 6248 | |
| 6249 | case R_FRV_TLSOFF: |
| 6250 | picrel->relocstlsoff++; |
| 6251 | info->flags |= DF_STATIC_TLS; |
| 6252 | goto bad_reloc; |
| 6253 | |
| 6254 | /* This relocation describes the C++ object vtable hierarchy. |
| 6255 | Reconstruct it for later use during GC. */ |
| 6256 | case R_FRV_GNU_VTINHERIT: |
| 6257 | if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset)) |
| 6258 | return FALSE; |
| 6259 | break; |
| 6260 | |
| 6261 | /* This relocation describes which C++ vtable entries are actually |
| 6262 | used. Record for later use during GC. */ |
| 6263 | case R_FRV_GNU_VTENTRY: |
| 6264 | if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend)) |
| 6265 | return FALSE; |
| 6266 | break; |
| 6267 | |
| 6268 | case R_FRV_LABEL16: |
| 6269 | case R_FRV_LO16: |
| 6270 | case R_FRV_HI16: |
| 6271 | case R_FRV_GPREL12: |
| 6272 | case R_FRV_GPRELU12: |
| 6273 | case R_FRV_GPREL32: |
| 6274 | case R_FRV_GPRELHI: |
| 6275 | case R_FRV_GPRELLO: |
| 6276 | case R_FRV_TLSDESC_RELAX: |
| 6277 | case R_FRV_GETTLSOFF_RELAX: |
| 6278 | case R_FRV_TLSOFF_RELAX: |
| 6279 | break; |
| 6280 | |
| 6281 | default: |
| 6282 | bad_reloc: |
| 6283 | (*_bfd_error_handler) |
| 6284 | (_("%B: unsupported relocation type %i"), |
| 6285 | abfd, ELF32_R_TYPE (rel->r_info)); |
| 6286 | return FALSE; |
| 6287 | } |
| 6288 | } |
| 6289 | |
| 6290 | return TRUE; |
| 6291 | } |
| 6292 | |
| 6293 | \f |
| 6294 | /* Return the machine subcode from the ELF e_flags header. */ |
| 6295 | |
| 6296 | static int |
| 6297 | elf32_frv_machine (abfd) |
| 6298 | bfd *abfd; |
| 6299 | { |
| 6300 | switch (elf_elfheader (abfd)->e_flags & EF_FRV_CPU_MASK) |
| 6301 | { |
| 6302 | default: break; |
| 6303 | case EF_FRV_CPU_FR550: return bfd_mach_fr550; |
| 6304 | case EF_FRV_CPU_FR500: return bfd_mach_fr500; |
| 6305 | case EF_FRV_CPU_FR450: return bfd_mach_fr450; |
| 6306 | case EF_FRV_CPU_FR405: return bfd_mach_fr400; |
| 6307 | case EF_FRV_CPU_FR400: return bfd_mach_fr400; |
| 6308 | case EF_FRV_CPU_FR300: return bfd_mach_fr300; |
| 6309 | case EF_FRV_CPU_SIMPLE: return bfd_mach_frvsimple; |
| 6310 | case EF_FRV_CPU_TOMCAT: return bfd_mach_frvtomcat; |
| 6311 | } |
| 6312 | |
| 6313 | return bfd_mach_frv; |
| 6314 | } |
| 6315 | |
| 6316 | /* Set the right machine number for a FRV ELF file. */ |
| 6317 | |
| 6318 | static bfd_boolean |
| 6319 | elf32_frv_object_p (abfd) |
| 6320 | bfd *abfd; |
| 6321 | { |
| 6322 | bfd_default_set_arch_mach (abfd, bfd_arch_frv, elf32_frv_machine (abfd)); |
| 6323 | return (((elf_elfheader (abfd)->e_flags & EF_FRV_FDPIC) != 0) |
| 6324 | == (IS_FDPIC (abfd))); |
| 6325 | } |
| 6326 | \f |
| 6327 | /* Function to set the ELF flag bits. */ |
| 6328 | |
| 6329 | static bfd_boolean |
| 6330 | frv_elf_set_private_flags (abfd, flags) |
| 6331 | bfd *abfd; |
| 6332 | flagword flags; |
| 6333 | { |
| 6334 | elf_elfheader (abfd)->e_flags = flags; |
| 6335 | elf_flags_init (abfd) = TRUE; |
| 6336 | return TRUE; |
| 6337 | } |
| 6338 | |
| 6339 | /* Copy backend specific data from one object module to another. */ |
| 6340 | |
| 6341 | static bfd_boolean |
| 6342 | frv_elf_copy_private_bfd_data (ibfd, obfd) |
| 6343 | bfd *ibfd; |
| 6344 | bfd *obfd; |
| 6345 | { |
| 6346 | if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour |
| 6347 | || bfd_get_flavour (obfd) != bfd_target_elf_flavour) |
| 6348 | return TRUE; |
| 6349 | |
| 6350 | BFD_ASSERT (!elf_flags_init (obfd) |
| 6351 | || elf_elfheader (obfd)->e_flags == elf_elfheader (ibfd)->e_flags); |
| 6352 | |
| 6353 | elf_elfheader (obfd)->e_flags = elf_elfheader (ibfd)->e_flags; |
| 6354 | elf_flags_init (obfd) = TRUE; |
| 6355 | return TRUE; |
| 6356 | } |
| 6357 | |
| 6358 | /* Return true if the architecture described by elf header flag |
| 6359 | EXTENSION is an extension of the architecture described by BASE. */ |
| 6360 | |
| 6361 | static bfd_boolean |
| 6362 | frv_elf_arch_extension_p (flagword base, flagword extension) |
| 6363 | { |
| 6364 | if (base == extension) |
| 6365 | return TRUE; |
| 6366 | |
| 6367 | /* CPU_GENERIC code can be merged with code for a specific |
| 6368 | architecture, in which case the result is marked as being |
| 6369 | for the specific architecture. Everything is therefore |
| 6370 | an extension of CPU_GENERIC. */ |
| 6371 | if (base == EF_FRV_CPU_GENERIC) |
| 6372 | return TRUE; |
| 6373 | |
| 6374 | if (extension == EF_FRV_CPU_FR450) |
| 6375 | if (base == EF_FRV_CPU_FR400 || base == EF_FRV_CPU_FR405) |
| 6376 | return TRUE; |
| 6377 | |
| 6378 | if (extension == EF_FRV_CPU_FR405) |
| 6379 | if (base == EF_FRV_CPU_FR400) |
| 6380 | return TRUE; |
| 6381 | |
| 6382 | return FALSE; |
| 6383 | } |
| 6384 | |
| 6385 | static bfd_boolean |
| 6386 | elf32_frvfdpic_copy_private_bfd_data (bfd *ibfd, bfd *obfd) |
| 6387 | { |
| 6388 | unsigned i; |
| 6389 | |
| 6390 | if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour |
| 6391 | || bfd_get_flavour (obfd) != bfd_target_elf_flavour) |
| 6392 | return TRUE; |
| 6393 | |
| 6394 | if (! frv_elf_copy_private_bfd_data (ibfd, obfd)) |
| 6395 | return FALSE; |
| 6396 | |
| 6397 | if (! elf_tdata (ibfd) || ! elf_tdata (ibfd)->phdr |
| 6398 | || ! elf_tdata (obfd) || ! elf_tdata (obfd)->phdr) |
| 6399 | return TRUE; |
| 6400 | |
| 6401 | /* Copy the stack size. */ |
| 6402 | for (i = 0; i < elf_elfheader (ibfd)->e_phnum; i++) |
| 6403 | if (elf_tdata (ibfd)->phdr[i].p_type == PT_GNU_STACK) |
| 6404 | { |
| 6405 | Elf_Internal_Phdr *iphdr = &elf_tdata (ibfd)->phdr[i]; |
| 6406 | |
| 6407 | for (i = 0; i < elf_elfheader (obfd)->e_phnum; i++) |
| 6408 | if (elf_tdata (obfd)->phdr[i].p_type == PT_GNU_STACK) |
| 6409 | { |
| 6410 | memcpy (&elf_tdata (obfd)->phdr[i], iphdr, sizeof (*iphdr)); |
| 6411 | |
| 6412 | /* Rewrite the phdrs, since we're only called after they |
| 6413 | were first written. */ |
| 6414 | if (bfd_seek (obfd, (bfd_signed_vma) get_elf_backend_data (obfd) |
| 6415 | ->s->sizeof_ehdr, SEEK_SET) != 0 |
| 6416 | || get_elf_backend_data (obfd)->s |
| 6417 | ->write_out_phdrs (obfd, elf_tdata (obfd)->phdr, |
| 6418 | elf_elfheader (obfd)->e_phnum) != 0) |
| 6419 | return FALSE; |
| 6420 | break; |
| 6421 | } |
| 6422 | |
| 6423 | break; |
| 6424 | } |
| 6425 | |
| 6426 | return TRUE; |
| 6427 | } |
| 6428 | |
| 6429 | /* Merge backend specific data from an object file to the output |
| 6430 | object file when linking. */ |
| 6431 | |
| 6432 | static bfd_boolean |
| 6433 | frv_elf_merge_private_bfd_data (ibfd, obfd) |
| 6434 | bfd *ibfd; |
| 6435 | bfd *obfd; |
| 6436 | { |
| 6437 | flagword old_flags, old_partial; |
| 6438 | flagword new_flags, new_partial; |
| 6439 | bfd_boolean error = FALSE; |
| 6440 | char new_opt[80]; |
| 6441 | char old_opt[80]; |
| 6442 | |
| 6443 | new_opt[0] = old_opt[0] = '\0'; |
| 6444 | new_flags = elf_elfheader (ibfd)->e_flags; |
| 6445 | old_flags = elf_elfheader (obfd)->e_flags; |
| 6446 | |
| 6447 | if (new_flags & EF_FRV_FDPIC) |
| 6448 | new_flags &= ~EF_FRV_PIC; |
| 6449 | |
| 6450 | #ifdef DEBUG |
| 6451 | (*_bfd_error_handler) ("old_flags = 0x%.8lx, new_flags = 0x%.8lx, init = %s, filename = %s", |
| 6452 | old_flags, new_flags, elf_flags_init (obfd) ? "yes" : "no", |
| 6453 | bfd_get_filename (ibfd)); |
| 6454 | #endif |
| 6455 | |
| 6456 | if (!elf_flags_init (obfd)) /* First call, no flags set. */ |
| 6457 | { |
| 6458 | elf_flags_init (obfd) = TRUE; |
| 6459 | old_flags = new_flags; |
| 6460 | } |
| 6461 | |
| 6462 | else if (new_flags == old_flags) /* Compatible flags are ok. */ |
| 6463 | ; |
| 6464 | |
| 6465 | else /* Possibly incompatible flags. */ |
| 6466 | { |
| 6467 | /* Warn if different # of gprs are used. Note, 0 means nothing is |
| 6468 | said about the size of gprs. */ |
| 6469 | new_partial = (new_flags & EF_FRV_GPR_MASK); |
| 6470 | old_partial = (old_flags & EF_FRV_GPR_MASK); |
| 6471 | if (new_partial == old_partial) |
| 6472 | ; |
| 6473 | |
| 6474 | else if (new_partial == 0) |
| 6475 | ; |
| 6476 | |
| 6477 | else if (old_partial == 0) |
| 6478 | old_flags |= new_partial; |
| 6479 | |
| 6480 | else |
| 6481 | { |
| 6482 | switch (new_partial) |
| 6483 | { |
| 6484 | default: strcat (new_opt, " -mgpr-??"); break; |
| 6485 | case EF_FRV_GPR_32: strcat (new_opt, " -mgpr-32"); break; |
| 6486 | case EF_FRV_GPR_64: strcat (new_opt, " -mgpr-64"); break; |
| 6487 | } |
| 6488 | |
| 6489 | switch (old_partial) |
| 6490 | { |
| 6491 | default: strcat (old_opt, " -mgpr-??"); break; |
| 6492 | case EF_FRV_GPR_32: strcat (old_opt, " -mgpr-32"); break; |
| 6493 | case EF_FRV_GPR_64: strcat (old_opt, " -mgpr-64"); break; |
| 6494 | } |
| 6495 | } |
| 6496 | |
| 6497 | /* Warn if different # of fprs are used. Note, 0 means nothing is |
| 6498 | said about the size of fprs. */ |
| 6499 | new_partial = (new_flags & EF_FRV_FPR_MASK); |
| 6500 | old_partial = (old_flags & EF_FRV_FPR_MASK); |
| 6501 | if (new_partial == old_partial) |
| 6502 | ; |
| 6503 | |
| 6504 | else if (new_partial == 0) |
| 6505 | ; |
| 6506 | |
| 6507 | else if (old_partial == 0) |
| 6508 | old_flags |= new_partial; |
| 6509 | |
| 6510 | else |
| 6511 | { |
| 6512 | switch (new_partial) |
| 6513 | { |
| 6514 | default: strcat (new_opt, " -mfpr-?"); break; |
| 6515 | case EF_FRV_FPR_32: strcat (new_opt, " -mfpr-32"); break; |
| 6516 | case EF_FRV_FPR_64: strcat (new_opt, " -mfpr-64"); break; |
| 6517 | case EF_FRV_FPR_NONE: strcat (new_opt, " -msoft-float"); break; |
| 6518 | } |
| 6519 | |
| 6520 | switch (old_partial) |
| 6521 | { |
| 6522 | default: strcat (old_opt, " -mfpr-?"); break; |
| 6523 | case EF_FRV_FPR_32: strcat (old_opt, " -mfpr-32"); break; |
| 6524 | case EF_FRV_FPR_64: strcat (old_opt, " -mfpr-64"); break; |
| 6525 | case EF_FRV_FPR_NONE: strcat (old_opt, " -msoft-float"); break; |
| 6526 | } |
| 6527 | } |
| 6528 | |
| 6529 | /* Warn if different dword support was used. Note, 0 means nothing is |
| 6530 | said about the dword support. */ |
| 6531 | new_partial = (new_flags & EF_FRV_DWORD_MASK); |
| 6532 | old_partial = (old_flags & EF_FRV_DWORD_MASK); |
| 6533 | if (new_partial == old_partial) |
| 6534 | ; |
| 6535 | |
| 6536 | else if (new_partial == 0) |
| 6537 | ; |
| 6538 | |
| 6539 | else if (old_partial == 0) |
| 6540 | old_flags |= new_partial; |
| 6541 | |
| 6542 | else |
| 6543 | { |
| 6544 | switch (new_partial) |
| 6545 | { |
| 6546 | default: strcat (new_opt, " -mdword-?"); break; |
| 6547 | case EF_FRV_DWORD_YES: strcat (new_opt, " -mdword"); break; |
| 6548 | case EF_FRV_DWORD_NO: strcat (new_opt, " -mno-dword"); break; |
| 6549 | } |
| 6550 | |
| 6551 | switch (old_partial) |
| 6552 | { |
| 6553 | default: strcat (old_opt, " -mdword-?"); break; |
| 6554 | case EF_FRV_DWORD_YES: strcat (old_opt, " -mdword"); break; |
| 6555 | case EF_FRV_DWORD_NO: strcat (old_opt, " -mno-dword"); break; |
| 6556 | } |
| 6557 | } |
| 6558 | |
| 6559 | /* Or in flags that accumulate (ie, if one module uses it, mark that the |
| 6560 | feature is used. */ |
| 6561 | old_flags |= new_flags & (EF_FRV_DOUBLE |
| 6562 | | EF_FRV_MEDIA |
| 6563 | | EF_FRV_MULADD |
| 6564 | | EF_FRV_NON_PIC_RELOCS); |
| 6565 | |
| 6566 | /* If any module was compiled without -G0, clear the G0 bit. */ |
| 6567 | old_flags = ((old_flags & ~ EF_FRV_G0) |
| 6568 | | (old_flags & new_flags & EF_FRV_G0)); |
| 6569 | |
| 6570 | /* If any module was compiled without -mnopack, clear the mnopack bit. */ |
| 6571 | old_flags = ((old_flags & ~ EF_FRV_NOPACK) |
| 6572 | | (old_flags & new_flags & EF_FRV_NOPACK)); |
| 6573 | |
| 6574 | /* We don't have to do anything if the pic flags are the same, or the new |
| 6575 | module(s) were compiled with -mlibrary-pic. */ |
| 6576 | new_partial = (new_flags & EF_FRV_PIC_FLAGS); |
| 6577 | old_partial = (old_flags & EF_FRV_PIC_FLAGS); |
| 6578 | if ((new_partial == old_partial) || ((new_partial & EF_FRV_LIBPIC) != 0)) |
| 6579 | ; |
| 6580 | |
| 6581 | /* If the old module(s) were compiled with -mlibrary-pic, copy in the pic |
| 6582 | flags if any from the new module. */ |
| 6583 | else if ((old_partial & EF_FRV_LIBPIC) != 0) |
| 6584 | old_flags = (old_flags & ~ EF_FRV_PIC_FLAGS) | new_partial; |
| 6585 | |
| 6586 | /* If we have mixtures of -fpic and -fPIC, or in both bits. */ |
| 6587 | else if (new_partial != 0 && old_partial != 0) |
| 6588 | old_flags |= new_partial; |
| 6589 | |
| 6590 | /* One module was compiled for pic and the other was not, see if we have |
| 6591 | had any relocations that are not pic-safe. */ |
| 6592 | else |
| 6593 | { |
| 6594 | if ((old_flags & EF_FRV_NON_PIC_RELOCS) == 0) |
| 6595 | old_flags |= new_partial; |
| 6596 | else |
| 6597 | { |
| 6598 | old_flags &= ~ EF_FRV_PIC_FLAGS; |
| 6599 | #ifndef FRV_NO_PIC_ERROR |
| 6600 | error = TRUE; |
| 6601 | (*_bfd_error_handler) |
| 6602 | (_("%s: compiled with %s and linked with modules that use non-pic relocations"), |
| 6603 | bfd_get_filename (ibfd), |
| 6604 | (new_flags & EF_FRV_BIGPIC) ? "-fPIC" : "-fpic"); |
| 6605 | #endif |
| 6606 | } |
| 6607 | } |
| 6608 | |
| 6609 | /* Warn if different cpu is used (allow a specific cpu to override |
| 6610 | the generic cpu). */ |
| 6611 | new_partial = (new_flags & EF_FRV_CPU_MASK); |
| 6612 | old_partial = (old_flags & EF_FRV_CPU_MASK); |
| 6613 | if (frv_elf_arch_extension_p (new_partial, old_partial)) |
| 6614 | ; |
| 6615 | |
| 6616 | else if (frv_elf_arch_extension_p (old_partial, new_partial)) |
| 6617 | old_flags = (old_flags & ~EF_FRV_CPU_MASK) | new_partial; |
| 6618 | |
| 6619 | else |
| 6620 | { |
| 6621 | switch (new_partial) |
| 6622 | { |
| 6623 | default: strcat (new_opt, " -mcpu=?"); break; |
| 6624 | case EF_FRV_CPU_GENERIC: strcat (new_opt, " -mcpu=frv"); break; |
| 6625 | case EF_FRV_CPU_SIMPLE: strcat (new_opt, " -mcpu=simple"); break; |
| 6626 | case EF_FRV_CPU_FR550: strcat (new_opt, " -mcpu=fr550"); break; |
| 6627 | case EF_FRV_CPU_FR500: strcat (new_opt, " -mcpu=fr500"); break; |
| 6628 | case EF_FRV_CPU_FR450: strcat (new_opt, " -mcpu=fr450"); break; |
| 6629 | case EF_FRV_CPU_FR405: strcat (new_opt, " -mcpu=fr405"); break; |
| 6630 | case EF_FRV_CPU_FR400: strcat (new_opt, " -mcpu=fr400"); break; |
| 6631 | case EF_FRV_CPU_FR300: strcat (new_opt, " -mcpu=fr300"); break; |
| 6632 | case EF_FRV_CPU_TOMCAT: strcat (new_opt, " -mcpu=tomcat"); break; |
| 6633 | } |
| 6634 | |
| 6635 | switch (old_partial) |
| 6636 | { |
| 6637 | default: strcat (old_opt, " -mcpu=?"); break; |
| 6638 | case EF_FRV_CPU_GENERIC: strcat (old_opt, " -mcpu=frv"); break; |
| 6639 | case EF_FRV_CPU_SIMPLE: strcat (old_opt, " -mcpu=simple"); break; |
| 6640 | case EF_FRV_CPU_FR550: strcat (old_opt, " -mcpu=fr550"); break; |
| 6641 | case EF_FRV_CPU_FR500: strcat (old_opt, " -mcpu=fr500"); break; |
| 6642 | case EF_FRV_CPU_FR450: strcat (old_opt, " -mcpu=fr450"); break; |
| 6643 | case EF_FRV_CPU_FR405: strcat (old_opt, " -mcpu=fr405"); break; |
| 6644 | case EF_FRV_CPU_FR400: strcat (old_opt, " -mcpu=fr400"); break; |
| 6645 | case EF_FRV_CPU_FR300: strcat (old_opt, " -mcpu=fr300"); break; |
| 6646 | case EF_FRV_CPU_TOMCAT: strcat (old_opt, " -mcpu=tomcat"); break; |
| 6647 | } |
| 6648 | } |
| 6649 | |
| 6650 | /* Print out any mismatches from above. */ |
| 6651 | if (new_opt[0]) |
| 6652 | { |
| 6653 | error = TRUE; |
| 6654 | (*_bfd_error_handler) |
| 6655 | (_("%s: compiled with %s and linked with modules compiled with %s"), |
| 6656 | bfd_get_filename (ibfd), new_opt, old_opt); |
| 6657 | } |
| 6658 | |
| 6659 | /* Warn about any other mismatches */ |
| 6660 | new_partial = (new_flags & ~ EF_FRV_ALL_FLAGS); |
| 6661 | old_partial = (old_flags & ~ EF_FRV_ALL_FLAGS); |
| 6662 | if (new_partial != old_partial) |
| 6663 | { |
| 6664 | old_flags |= new_partial; |
| 6665 | error = TRUE; |
| 6666 | (*_bfd_error_handler) |
| 6667 | (_("%s: uses different unknown e_flags (0x%lx) fields than previous modules (0x%lx)"), |
| 6668 | bfd_get_filename (ibfd), (long)new_partial, (long)old_partial); |
| 6669 | } |
| 6670 | } |
| 6671 | |
| 6672 | /* If the cpu is -mcpu=simple, then set the -mnopack bit. */ |
| 6673 | if ((old_flags & EF_FRV_CPU_MASK) == EF_FRV_CPU_SIMPLE) |
| 6674 | old_flags |= EF_FRV_NOPACK; |
| 6675 | |
| 6676 | /* Update the old flags now with changes made above. */ |
| 6677 | old_partial = elf_elfheader (obfd)->e_flags & EF_FRV_CPU_MASK; |
| 6678 | elf_elfheader (obfd)->e_flags = old_flags; |
| 6679 | if (old_partial != (old_flags & EF_FRV_CPU_MASK)) |
| 6680 | bfd_default_set_arch_mach (obfd, bfd_arch_frv, elf32_frv_machine (obfd)); |
| 6681 | |
| 6682 | if (((new_flags & EF_FRV_FDPIC) == 0) |
| 6683 | != (! IS_FDPIC (ibfd))) |
| 6684 | { |
| 6685 | error = TRUE; |
| 6686 | if (IS_FDPIC (obfd)) |
| 6687 | (*_bfd_error_handler) |
| 6688 | (_("%s: cannot link non-fdpic object file into fdpic executable"), |
| 6689 | bfd_get_filename (ibfd)); |
| 6690 | else |
| 6691 | (*_bfd_error_handler) |
| 6692 | (_("%s: cannot link fdpic object file into non-fdpic executable"), |
| 6693 | bfd_get_filename (ibfd)); |
| 6694 | } |
| 6695 | |
| 6696 | if (error) |
| 6697 | bfd_set_error (bfd_error_bad_value); |
| 6698 | |
| 6699 | return !error; |
| 6700 | } |
| 6701 | |
| 6702 | \f |
| 6703 | bfd_boolean |
| 6704 | frv_elf_print_private_bfd_data (abfd, ptr) |
| 6705 | bfd *abfd; |
| 6706 | PTR ptr; |
| 6707 | { |
| 6708 | FILE *file = (FILE *) ptr; |
| 6709 | flagword flags; |
| 6710 | |
| 6711 | BFD_ASSERT (abfd != NULL && ptr != NULL); |
| 6712 | |
| 6713 | /* Print normal ELF private data. */ |
| 6714 | _bfd_elf_print_private_bfd_data (abfd, ptr); |
| 6715 | |
| 6716 | flags = elf_elfheader (abfd)->e_flags; |
| 6717 | fprintf (file, _("private flags = 0x%lx:"), (long)flags); |
| 6718 | |
| 6719 | switch (flags & EF_FRV_CPU_MASK) |
| 6720 | { |
| 6721 | default: break; |
| 6722 | case EF_FRV_CPU_SIMPLE: fprintf (file, " -mcpu=simple"); break; |
| 6723 | case EF_FRV_CPU_FR550: fprintf (file, " -mcpu=fr550"); break; |
| 6724 | case EF_FRV_CPU_FR500: fprintf (file, " -mcpu=fr500"); break; |
| 6725 | case EF_FRV_CPU_FR450: fprintf (file, " -mcpu=fr450"); break; |
| 6726 | case EF_FRV_CPU_FR405: fprintf (file, " -mcpu=fr405"); break; |
| 6727 | case EF_FRV_CPU_FR400: fprintf (file, " -mcpu=fr400"); break; |
| 6728 | case EF_FRV_CPU_FR300: fprintf (file, " -mcpu=fr300"); break; |
| 6729 | case EF_FRV_CPU_TOMCAT: fprintf (file, " -mcpu=tomcat"); break; |
| 6730 | } |
| 6731 | |
| 6732 | switch (flags & EF_FRV_GPR_MASK) |
| 6733 | { |
| 6734 | default: break; |
| 6735 | case EF_FRV_GPR_32: fprintf (file, " -mgpr-32"); break; |
| 6736 | case EF_FRV_GPR_64: fprintf (file, " -mgpr-64"); break; |
| 6737 | } |
| 6738 | |
| 6739 | switch (flags & EF_FRV_FPR_MASK) |
| 6740 | { |
| 6741 | default: break; |
| 6742 | case EF_FRV_FPR_32: fprintf (file, " -mfpr-32"); break; |
| 6743 | case EF_FRV_FPR_64: fprintf (file, " -mfpr-64"); break; |
| 6744 | case EF_FRV_FPR_NONE: fprintf (file, " -msoft-float"); break; |
| 6745 | } |
| 6746 | |
| 6747 | switch (flags & EF_FRV_DWORD_MASK) |
| 6748 | { |
| 6749 | default: break; |
| 6750 | case EF_FRV_DWORD_YES: fprintf (file, " -mdword"); break; |
| 6751 | case EF_FRV_DWORD_NO: fprintf (file, " -mno-dword"); break; |
| 6752 | } |
| 6753 | |
| 6754 | if (flags & EF_FRV_DOUBLE) |
| 6755 | fprintf (file, " -mdouble"); |
| 6756 | |
| 6757 | if (flags & EF_FRV_MEDIA) |
| 6758 | fprintf (file, " -mmedia"); |
| 6759 | |
| 6760 | if (flags & EF_FRV_MULADD) |
| 6761 | fprintf (file, " -mmuladd"); |
| 6762 | |
| 6763 | if (flags & EF_FRV_PIC) |
| 6764 | fprintf (file, " -fpic"); |
| 6765 | |
| 6766 | if (flags & EF_FRV_BIGPIC) |
| 6767 | fprintf (file, " -fPIC"); |
| 6768 | |
| 6769 | if (flags & EF_FRV_LIBPIC) |
| 6770 | fprintf (file, " -mlibrary-pic"); |
| 6771 | |
| 6772 | if (flags & EF_FRV_FDPIC) |
| 6773 | fprintf (file, " -mfdpic"); |
| 6774 | |
| 6775 | if (flags & EF_FRV_NON_PIC_RELOCS) |
| 6776 | fprintf (file, " non-pic relocations"); |
| 6777 | |
| 6778 | if (flags & EF_FRV_G0) |
| 6779 | fprintf (file, " -G0"); |
| 6780 | |
| 6781 | fputc ('\n', file); |
| 6782 | return TRUE; |
| 6783 | } |
| 6784 | |
| 6785 | \f |
| 6786 | /* Support for core dump NOTE sections. */ |
| 6787 | |
| 6788 | static bfd_boolean |
| 6789 | elf32_frv_grok_prstatus (bfd *abfd, Elf_Internal_Note *note) |
| 6790 | { |
| 6791 | int offset; |
| 6792 | unsigned int raw_size; |
| 6793 | |
| 6794 | switch (note->descsz) |
| 6795 | { |
| 6796 | default: |
| 6797 | return FALSE; |
| 6798 | |
| 6799 | /* The Linux/FRV elf_prstatus struct is 268 bytes long. The other |
| 6800 | hardcoded offsets and sizes listed below (and contained within |
| 6801 | this lexical block) refer to fields in the target's elf_prstatus |
| 6802 | struct. */ |
| 6803 | case 268: |
| 6804 | /* `pr_cursig' is at offset 12. */ |
| 6805 | elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12); |
| 6806 | |
| 6807 | /* `pr_pid' is at offset 24. */ |
| 6808 | elf_tdata (abfd)->core_pid = bfd_get_32 (abfd, note->descdata + 24); |
| 6809 | |
| 6810 | /* `pr_reg' is at offset 72. */ |
| 6811 | offset = 72; |
| 6812 | |
| 6813 | /* Most grok_prstatus implementations set `raw_size' to the size |
| 6814 | of the pr_reg field. For Linux/FRV, we set `raw_size' to be |
| 6815 | the size of `pr_reg' plus the size of `pr_exec_fdpic_loadmap' |
| 6816 | and `pr_interp_fdpic_loadmap', both of which (by design) |
| 6817 | immediately follow `pr_reg'. This will allow these fields to |
| 6818 | be viewed by GDB as registers. |
| 6819 | |
| 6820 | `pr_reg' is 184 bytes long. `pr_exec_fdpic_loadmap' and |
| 6821 | `pr_interp_fdpic_loadmap' are 4 bytes each. */ |
| 6822 | raw_size = 184 + 4 + 4; |
| 6823 | |
| 6824 | break; |
| 6825 | } |
| 6826 | |
| 6827 | /* Make a ".reg/999" section. */ |
| 6828 | return _bfd_elfcore_make_pseudosection (abfd, ".reg", raw_size, |
| 6829 | note->descpos + offset); |
| 6830 | } |
| 6831 | |
| 6832 | static bfd_boolean |
| 6833 | elf32_frv_grok_psinfo (bfd *abfd, Elf_Internal_Note *note) |
| 6834 | { |
| 6835 | switch (note->descsz) |
| 6836 | { |
| 6837 | default: |
| 6838 | return FALSE; |
| 6839 | |
| 6840 | /* The Linux/FRV elf_prpsinfo struct is 124 bytes long. */ |
| 6841 | case 124: |
| 6842 | |
| 6843 | /* `pr_fname' is found at offset 28 and is 16 bytes long. */ |
| 6844 | elf_tdata (abfd)->core_program |
| 6845 | = _bfd_elfcore_strndup (abfd, note->descdata + 28, 16); |
| 6846 | |
| 6847 | /* `pr_psargs' is found at offset 44 and is 80 bytes long. */ |
| 6848 | elf_tdata (abfd)->core_command |
| 6849 | = _bfd_elfcore_strndup (abfd, note->descdata + 44, 80); |
| 6850 | } |
| 6851 | |
| 6852 | /* Note that for some reason, a spurious space is tacked |
| 6853 | onto the end of the args in some (at least one anyway) |
| 6854 | implementations, so strip it off if it exists. */ |
| 6855 | |
| 6856 | { |
| 6857 | char *command = elf_tdata (abfd)->core_command; |
| 6858 | int n = strlen (command); |
| 6859 | |
| 6860 | if (0 < n && command[n - 1] == ' ') |
| 6861 | command[n - 1] = '\0'; |
| 6862 | } |
| 6863 | |
| 6864 | return TRUE; |
| 6865 | } |
| 6866 | #define ELF_ARCH bfd_arch_frv |
| 6867 | #define ELF_MACHINE_CODE EM_CYGNUS_FRV |
| 6868 | #define ELF_MAXPAGESIZE 0x1000 |
| 6869 | |
| 6870 | #define TARGET_BIG_SYM bfd_elf32_frv_vec |
| 6871 | #define TARGET_BIG_NAME "elf32-frv" |
| 6872 | |
| 6873 | #define elf_info_to_howto frv_info_to_howto_rela |
| 6874 | #define elf_backend_relocate_section elf32_frv_relocate_section |
| 6875 | #define elf_backend_gc_mark_hook elf32_frv_gc_mark_hook |
| 6876 | #define elf_backend_check_relocs elf32_frv_check_relocs |
| 6877 | #define elf_backend_object_p elf32_frv_object_p |
| 6878 | #define elf_backend_add_symbol_hook elf32_frv_add_symbol_hook |
| 6879 | |
| 6880 | #define elf_backend_can_gc_sections 1 |
| 6881 | #define elf_backend_rela_normal 1 |
| 6882 | |
| 6883 | #define bfd_elf32_bfd_reloc_type_lookup frv_reloc_type_lookup |
| 6884 | #define bfd_elf32_bfd_set_private_flags frv_elf_set_private_flags |
| 6885 | #define bfd_elf32_bfd_copy_private_bfd_data frv_elf_copy_private_bfd_data |
| 6886 | #define bfd_elf32_bfd_merge_private_bfd_data frv_elf_merge_private_bfd_data |
| 6887 | #define bfd_elf32_bfd_print_private_bfd_data frv_elf_print_private_bfd_data |
| 6888 | |
| 6889 | #define elf_backend_want_got_sym 1 |
| 6890 | #define elf_backend_got_header_size 0 |
| 6891 | #define elf_backend_want_got_plt 0 |
| 6892 | #define elf_backend_plt_readonly 1 |
| 6893 | #define elf_backend_want_plt_sym 0 |
| 6894 | #define elf_backend_plt_header_size 0 |
| 6895 | |
| 6896 | #define elf_backend_finish_dynamic_sections \ |
| 6897 | elf32_frv_finish_dynamic_sections |
| 6898 | |
| 6899 | #define elf_backend_grok_prstatus elf32_frv_grok_prstatus |
| 6900 | #define elf_backend_grok_psinfo elf32_frv_grok_psinfo |
| 6901 | |
| 6902 | #include "elf32-target.h" |
| 6903 | |
| 6904 | #undef ELF_MAXPAGESIZE |
| 6905 | #define ELF_MAXPAGESIZE 0x4000 |
| 6906 | |
| 6907 | #undef TARGET_BIG_SYM |
| 6908 | #define TARGET_BIG_SYM bfd_elf32_frvfdpic_vec |
| 6909 | #undef TARGET_BIG_NAME |
| 6910 | #define TARGET_BIG_NAME "elf32-frvfdpic" |
| 6911 | #undef elf32_bed |
| 6912 | #define elf32_bed elf32_frvfdpic_bed |
| 6913 | |
| 6914 | #undef elf_info_to_howto_rel |
| 6915 | #define elf_info_to_howto_rel frvfdpic_info_to_howto_rel |
| 6916 | |
| 6917 | #undef bfd_elf32_bfd_link_hash_table_create |
| 6918 | #define bfd_elf32_bfd_link_hash_table_create \ |
| 6919 | frvfdpic_elf_link_hash_table_create |
| 6920 | #undef elf_backend_always_size_sections |
| 6921 | #define elf_backend_always_size_sections \ |
| 6922 | elf32_frvfdpic_always_size_sections |
| 6923 | #undef elf_backend_modify_program_headers |
| 6924 | #define elf_backend_modify_program_headers \ |
| 6925 | elf32_frvfdpic_modify_program_headers |
| 6926 | #undef bfd_elf32_bfd_copy_private_bfd_data |
| 6927 | #define bfd_elf32_bfd_copy_private_bfd_data \ |
| 6928 | elf32_frvfdpic_copy_private_bfd_data |
| 6929 | |
| 6930 | #undef elf_backend_create_dynamic_sections |
| 6931 | #define elf_backend_create_dynamic_sections \ |
| 6932 | elf32_frvfdpic_create_dynamic_sections |
| 6933 | #undef elf_backend_adjust_dynamic_symbol |
| 6934 | #define elf_backend_adjust_dynamic_symbol \ |
| 6935 | elf32_frvfdpic_adjust_dynamic_symbol |
| 6936 | #undef elf_backend_size_dynamic_sections |
| 6937 | #define elf_backend_size_dynamic_sections \ |
| 6938 | elf32_frvfdpic_size_dynamic_sections |
| 6939 | #undef bfd_elf32_bfd_relax_section |
| 6940 | #define bfd_elf32_bfd_relax_section \ |
| 6941 | elf32_frvfdpic_relax_section |
| 6942 | #undef elf_backend_finish_dynamic_symbol |
| 6943 | #define elf_backend_finish_dynamic_symbol \ |
| 6944 | elf32_frvfdpic_finish_dynamic_symbol |
| 6945 | #undef elf_backend_finish_dynamic_sections |
| 6946 | #define elf_backend_finish_dynamic_sections \ |
| 6947 | elf32_frvfdpic_finish_dynamic_sections |
| 6948 | |
| 6949 | #undef elf_backend_can_make_relative_eh_frame |
| 6950 | #define elf_backend_can_make_relative_eh_frame \ |
| 6951 | frvfdpic_elf_use_relative_eh_frame |
| 6952 | #undef elf_backend_can_make_lsda_relative_eh_frame |
| 6953 | #define elf_backend_can_make_lsda_relative_eh_frame \ |
| 6954 | frvfdpic_elf_use_relative_eh_frame |
| 6955 | #undef elf_backend_encode_eh_address |
| 6956 | #define elf_backend_encode_eh_address \ |
| 6957 | frvfdpic_elf_encode_eh_address |
| 6958 | |
| 6959 | #undef elf_backend_may_use_rel_p |
| 6960 | #define elf_backend_may_use_rel_p 1 |
| 6961 | #undef elf_backend_may_use_rela_p |
| 6962 | #define elf_backend_may_use_rela_p 1 |
| 6963 | /* We use REL for dynamic relocations only. */ |
| 6964 | #undef elf_backend_default_use_rela_p |
| 6965 | #define elf_backend_default_use_rela_p 1 |
| 6966 | |
| 6967 | #undef elf_backend_omit_section_dynsym |
| 6968 | #define elf_backend_omit_section_dynsym _frvfdpic_link_omit_section_dynsym |
| 6969 | |
| 6970 | #include "elf32-target.h" |