| 1 | /* FRV-specific support for 32-bit ELF. |
| 2 | Copyright 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010 |
| 3 | Free Software Foundation, Inc. |
| 4 | |
| 5 | This file is part of BFD, the Binary File Descriptor library. |
| 6 | |
| 7 | This program is free software; you can redistribute it and/or modify |
| 8 | it under the terms of the GNU General Public License as published by |
| 9 | the Free Software Foundation; either version 3 of the License, or |
| 10 | (at your option) any later version. |
| 11 | |
| 12 | This program is distributed in the hope that it will be useful, |
| 13 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 15 | GNU General Public License for more details. |
| 16 | |
| 17 | You should have received a copy of the GNU General Public License |
| 18 | along with this program; if not, write to the Free Software |
| 19 | Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, |
| 20 | MA 02110-1301, USA. */ |
| 21 | |
| 22 | #include "sysdep.h" |
| 23 | #include "bfd.h" |
| 24 | #include "libbfd.h" |
| 25 | #include "elf-bfd.h" |
| 26 | #include "elf/frv.h" |
| 27 | #include "dwarf2.h" |
| 28 | #include "hashtab.h" |
| 29 | |
| 30 | /* Forward declarations. */ |
| 31 | static bfd_reloc_status_type elf32_frv_relocate_lo16 |
| 32 | PARAMS ((bfd *, Elf_Internal_Rela *, bfd_byte *, bfd_vma)); |
| 33 | static bfd_reloc_status_type elf32_frv_relocate_hi16 |
| 34 | PARAMS ((bfd *, Elf_Internal_Rela *, bfd_byte *, bfd_vma)); |
| 35 | static bfd_reloc_status_type elf32_frv_relocate_label24 |
| 36 | PARAMS ((bfd *, asection *, Elf_Internal_Rela *, bfd_byte *, bfd_vma)); |
| 37 | static bfd_reloc_status_type elf32_frv_relocate_gprel12 |
| 38 | PARAMS ((struct bfd_link_info *, bfd *, asection *, Elf_Internal_Rela *, |
| 39 | bfd_byte *, bfd_vma)); |
| 40 | static bfd_reloc_status_type elf32_frv_relocate_gprelu12 |
| 41 | PARAMS ((struct bfd_link_info *, bfd *, asection *, Elf_Internal_Rela *, |
| 42 | bfd_byte *, bfd_vma)); |
| 43 | static bfd_reloc_status_type elf32_frv_relocate_gprello |
| 44 | PARAMS ((struct bfd_link_info *, bfd *, asection *, Elf_Internal_Rela *, |
| 45 | bfd_byte *, bfd_vma)); |
| 46 | static bfd_reloc_status_type elf32_frv_relocate_gprelhi |
| 47 | PARAMS ((struct bfd_link_info *, bfd *, asection *, Elf_Internal_Rela *, |
| 48 | bfd_byte *, bfd_vma)); |
| 49 | static reloc_howto_type *frv_reloc_type_lookup |
| 50 | PARAMS ((bfd *, bfd_reloc_code_real_type)); |
| 51 | static void frv_info_to_howto_rela |
| 52 | PARAMS ((bfd *, arelent *, Elf_Internal_Rela *)); |
| 53 | static bfd_boolean elf32_frv_relocate_section |
| 54 | PARAMS ((bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *, |
| 55 | Elf_Internal_Rela *, Elf_Internal_Sym *, asection **)); |
| 56 | static bfd_boolean elf32_frv_add_symbol_hook |
| 57 | PARAMS (( bfd *, struct bfd_link_info *, Elf_Internal_Sym *, |
| 58 | const char **, flagword *, asection **, bfd_vma *)); |
| 59 | static bfd_reloc_status_type frv_final_link_relocate |
| 60 | PARAMS ((reloc_howto_type *, bfd *, asection *, bfd_byte *, |
| 61 | Elf_Internal_Rela *, bfd_vma)); |
| 62 | static bfd_boolean elf32_frv_check_relocs |
| 63 | PARAMS ((bfd *, struct bfd_link_info *, asection *, |
| 64 | const Elf_Internal_Rela *)); |
| 65 | static int elf32_frv_machine |
| 66 | PARAMS ((bfd *)); |
| 67 | static bfd_boolean elf32_frv_object_p |
| 68 | PARAMS ((bfd *)); |
| 69 | static bfd_boolean frv_elf_set_private_flags |
| 70 | PARAMS ((bfd *, flagword)); |
| 71 | static bfd_boolean frv_elf_copy_private_bfd_data |
| 72 | PARAMS ((bfd *, bfd *)); |
| 73 | static bfd_boolean frv_elf_merge_private_bfd_data |
| 74 | PARAMS ((bfd *, bfd *)); |
| 75 | static bfd_boolean frv_elf_print_private_bfd_data |
| 76 | PARAMS ((bfd *, PTR)); |
| 77 | static bfd_boolean elf32_frv_grok_prstatus (bfd * abfd, |
| 78 | Elf_Internal_Note * note); |
| 79 | static bfd_boolean elf32_frv_grok_psinfo (bfd * abfd, |
| 80 | Elf_Internal_Note * note); |
| 81 | |
| 82 | static reloc_howto_type elf32_frv_howto_table [] = |
| 83 | { |
| 84 | /* This reloc does nothing. */ |
| 85 | HOWTO (R_FRV_NONE, /* type */ |
| 86 | 0, /* rightshift */ |
| 87 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 88 | 32, /* bitsize */ |
| 89 | FALSE, /* pc_relative */ |
| 90 | 0, /* bitpos */ |
| 91 | complain_overflow_bitfield, /* complain_on_overflow */ |
| 92 | bfd_elf_generic_reloc, /* special_function */ |
| 93 | "R_FRV_NONE", /* name */ |
| 94 | FALSE, /* partial_inplace */ |
| 95 | 0, /* src_mask */ |
| 96 | 0, /* dst_mask */ |
| 97 | FALSE), /* pcrel_offset */ |
| 98 | |
| 99 | /* A 32 bit absolute relocation. */ |
| 100 | HOWTO (R_FRV_32, /* type */ |
| 101 | 0, /* rightshift */ |
| 102 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 103 | 32, /* bitsize */ |
| 104 | FALSE, /* pc_relative */ |
| 105 | 0, /* bitpos */ |
| 106 | complain_overflow_bitfield, /* complain_on_overflow */ |
| 107 | bfd_elf_generic_reloc, /* special_function */ |
| 108 | "R_FRV_32", /* name */ |
| 109 | FALSE, /* partial_inplace */ |
| 110 | 0xffffffff, /* src_mask */ |
| 111 | 0xffffffff, /* dst_mask */ |
| 112 | FALSE), /* pcrel_offset */ |
| 113 | |
| 114 | /* A 16 bit pc-relative relocation. */ |
| 115 | HOWTO (R_FRV_LABEL16, /* type */ |
| 116 | 2, /* rightshift */ |
| 117 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 118 | 16, /* bitsize */ |
| 119 | TRUE, /* pc_relative */ |
| 120 | 0, /* bitpos */ |
| 121 | complain_overflow_signed, /* complain_on_overflow */ |
| 122 | bfd_elf_generic_reloc, /* special_function */ |
| 123 | "R_FRV_LABEL16", /* name */ |
| 124 | FALSE, /* partial_inplace */ |
| 125 | 0xffff, /* src_mask */ |
| 126 | 0xffff, /* dst_mask */ |
| 127 | TRUE), /* pcrel_offset */ |
| 128 | |
| 129 | /* A 24-bit pc-relative relocation. */ |
| 130 | HOWTO (R_FRV_LABEL24, /* type */ |
| 131 | 2, /* rightshift */ |
| 132 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 133 | 26, /* bitsize */ |
| 134 | TRUE, /* pc_relative */ |
| 135 | 0, /* bitpos */ |
| 136 | complain_overflow_bitfield, /* complain_on_overflow */ |
| 137 | bfd_elf_generic_reloc, /* special_function */ |
| 138 | "R_FRV_LABEL24", /* name */ |
| 139 | FALSE, /* partial_inplace */ |
| 140 | 0x7e03ffff, /* src_mask */ |
| 141 | 0x7e03ffff, /* dst_mask */ |
| 142 | TRUE), /* pcrel_offset */ |
| 143 | |
| 144 | HOWTO (R_FRV_LO16, /* type */ |
| 145 | 0, /* rightshift */ |
| 146 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 147 | 16, /* bitsize */ |
| 148 | FALSE, /* pc_relative */ |
| 149 | 0, /* bitpos */ |
| 150 | complain_overflow_dont, /* complain_on_overflow */ |
| 151 | bfd_elf_generic_reloc, /* special_function */ |
| 152 | "R_FRV_LO16", /* name */ |
| 153 | FALSE, /* partial_inplace */ |
| 154 | 0xffff, /* src_mask */ |
| 155 | 0xffff, /* dst_mask */ |
| 156 | FALSE), /* pcrel_offset */ |
| 157 | |
| 158 | HOWTO (R_FRV_HI16, /* type */ |
| 159 | 0, /* rightshift */ |
| 160 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 161 | 16, /* bitsize */ |
| 162 | FALSE, /* pc_relative */ |
| 163 | 0, /* bitpos */ |
| 164 | complain_overflow_dont, /* complain_on_overflow */ |
| 165 | bfd_elf_generic_reloc, /* special_function */ |
| 166 | "R_FRV_HI16", /* name */ |
| 167 | FALSE, /* partial_inplace */ |
| 168 | 0xffff, /* src_mask */ |
| 169 | 0xffff, /* dst_mask */ |
| 170 | FALSE), /* pcrel_offset */ |
| 171 | |
| 172 | HOWTO (R_FRV_GPREL12, /* type */ |
| 173 | 0, /* rightshift */ |
| 174 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 175 | 12, /* bitsize */ |
| 176 | FALSE, /* pc_relative */ |
| 177 | 0, /* bitpos */ |
| 178 | complain_overflow_dont, /* complain_on_overflow */ |
| 179 | bfd_elf_generic_reloc, /* special_function */ |
| 180 | "R_FRV_GPREL12", /* name */ |
| 181 | FALSE, /* partial_inplace */ |
| 182 | 0xfff, /* src_mask */ |
| 183 | 0xfff, /* dst_mask */ |
| 184 | FALSE), /* pcrel_offset */ |
| 185 | |
| 186 | HOWTO (R_FRV_GPRELU12, /* type */ |
| 187 | 0, /* rightshift */ |
| 188 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 189 | 12, /* bitsize */ |
| 190 | FALSE, /* pc_relative */ |
| 191 | 0, /* bitpos */ |
| 192 | complain_overflow_dont, /* complain_on_overflow */ |
| 193 | bfd_elf_generic_reloc, /* special_function */ |
| 194 | "R_FRV_GPRELU12", /* name */ |
| 195 | FALSE, /* partial_inplace */ |
| 196 | 0xfff, /* src_mask */ |
| 197 | 0x3f03f, /* dst_mask */ |
| 198 | FALSE), /* pcrel_offset */ |
| 199 | |
| 200 | HOWTO (R_FRV_GPREL32, /* type */ |
| 201 | 0, /* rightshift */ |
| 202 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 203 | 32, /* bitsize */ |
| 204 | FALSE, /* pc_relative */ |
| 205 | 0, /* bitpos */ |
| 206 | complain_overflow_dont, /* complain_on_overflow */ |
| 207 | bfd_elf_generic_reloc, /* special_function */ |
| 208 | "R_FRV_GPREL32", /* name */ |
| 209 | FALSE, /* partial_inplace */ |
| 210 | 0xffffffff, /* src_mask */ |
| 211 | 0xffffffff, /* dst_mask */ |
| 212 | FALSE), /* pcrel_offset */ |
| 213 | |
| 214 | HOWTO (R_FRV_GPRELHI, /* type */ |
| 215 | 0, /* rightshift */ |
| 216 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 217 | 16, /* bitsize */ |
| 218 | FALSE, /* pc_relative */ |
| 219 | 0, /* bitpos */ |
| 220 | complain_overflow_dont, /* complain_on_overflow */ |
| 221 | bfd_elf_generic_reloc, /* special_function */ |
| 222 | "R_FRV_GPRELHI", /* name */ |
| 223 | FALSE, /* partial_inplace */ |
| 224 | 0xffff, /* src_mask */ |
| 225 | 0xffff, /* dst_mask */ |
| 226 | FALSE), /* pcrel_offset */ |
| 227 | |
| 228 | HOWTO (R_FRV_GPRELLO, /* type */ |
| 229 | 0, /* rightshift */ |
| 230 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 231 | 16, /* bitsize */ |
| 232 | FALSE, /* pc_relative */ |
| 233 | 0, /* bitpos */ |
| 234 | complain_overflow_dont, /* complain_on_overflow */ |
| 235 | bfd_elf_generic_reloc, /* special_function */ |
| 236 | "R_FRV_GPRELLO", /* name */ |
| 237 | FALSE, /* partial_inplace */ |
| 238 | 0xffff, /* src_mask */ |
| 239 | 0xffff, /* dst_mask */ |
| 240 | FALSE), /* pcrel_offset */ |
| 241 | |
| 242 | /* A 12-bit signed operand with the GOT offset for the address of |
| 243 | the symbol. */ |
| 244 | HOWTO (R_FRV_GOT12, /* type */ |
| 245 | 0, /* rightshift */ |
| 246 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 247 | 12, /* bitsize */ |
| 248 | FALSE, /* pc_relative */ |
| 249 | 0, /* bitpos */ |
| 250 | complain_overflow_signed, /* complain_on_overflow */ |
| 251 | bfd_elf_generic_reloc, /* special_function */ |
| 252 | "R_FRV_GOT12", /* name */ |
| 253 | FALSE, /* partial_inplace */ |
| 254 | 0xfff, /* src_mask */ |
| 255 | 0xfff, /* dst_mask */ |
| 256 | FALSE), /* pcrel_offset */ |
| 257 | |
| 258 | /* The upper 16 bits of the GOT offset for the address of the |
| 259 | symbol. */ |
| 260 | HOWTO (R_FRV_GOTHI, /* type */ |
| 261 | 0, /* rightshift */ |
| 262 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 263 | 16, /* bitsize */ |
| 264 | FALSE, /* pc_relative */ |
| 265 | 0, /* bitpos */ |
| 266 | complain_overflow_dont, /* complain_on_overflow */ |
| 267 | bfd_elf_generic_reloc, /* special_function */ |
| 268 | "R_FRV_GOTHI", /* name */ |
| 269 | FALSE, /* partial_inplace */ |
| 270 | 0xffff, /* src_mask */ |
| 271 | 0xffff, /* dst_mask */ |
| 272 | FALSE), /* pcrel_offset */ |
| 273 | |
| 274 | /* The lower 16 bits of the GOT offset for the address of the |
| 275 | symbol. */ |
| 276 | HOWTO (R_FRV_GOTLO, /* type */ |
| 277 | 0, /* rightshift */ |
| 278 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 279 | 16, /* bitsize */ |
| 280 | FALSE, /* pc_relative */ |
| 281 | 0, /* bitpos */ |
| 282 | complain_overflow_dont, /* complain_on_overflow */ |
| 283 | bfd_elf_generic_reloc, /* special_function */ |
| 284 | "R_FRV_GOTLO", /* name */ |
| 285 | FALSE, /* partial_inplace */ |
| 286 | 0xffff, /* src_mask */ |
| 287 | 0xffff, /* dst_mask */ |
| 288 | FALSE), /* pcrel_offset */ |
| 289 | |
| 290 | /* The 32-bit address of the canonical descriptor of a function. */ |
| 291 | HOWTO (R_FRV_FUNCDESC, /* type */ |
| 292 | 0, /* rightshift */ |
| 293 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 294 | 32, /* bitsize */ |
| 295 | FALSE, /* pc_relative */ |
| 296 | 0, /* bitpos */ |
| 297 | complain_overflow_bitfield, /* complain_on_overflow */ |
| 298 | bfd_elf_generic_reloc, /* special_function */ |
| 299 | "R_FRV_FUNCDESC", /* name */ |
| 300 | FALSE, /* partial_inplace */ |
| 301 | 0xffffffff, /* src_mask */ |
| 302 | 0xffffffff, /* dst_mask */ |
| 303 | FALSE), /* pcrel_offset */ |
| 304 | |
| 305 | /* A 12-bit signed operand with the GOT offset for the address of |
| 306 | canonical descriptor of a function. */ |
| 307 | HOWTO (R_FRV_FUNCDESC_GOT12, /* type */ |
| 308 | 0, /* rightshift */ |
| 309 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 310 | 12, /* bitsize */ |
| 311 | FALSE, /* pc_relative */ |
| 312 | 0, /* bitpos */ |
| 313 | complain_overflow_signed, /* complain_on_overflow */ |
| 314 | bfd_elf_generic_reloc, /* special_function */ |
| 315 | "R_FRV_FUNCDESC_GOT12", /* name */ |
| 316 | FALSE, /* partial_inplace */ |
| 317 | 0xfff, /* src_mask */ |
| 318 | 0xfff, /* dst_mask */ |
| 319 | FALSE), /* pcrel_offset */ |
| 320 | |
| 321 | /* The upper 16 bits of the GOT offset for the address of the |
| 322 | canonical descriptor of a function. */ |
| 323 | HOWTO (R_FRV_FUNCDESC_GOTHI, /* type */ |
| 324 | 0, /* rightshift */ |
| 325 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 326 | 16, /* bitsize */ |
| 327 | FALSE, /* pc_relative */ |
| 328 | 0, /* bitpos */ |
| 329 | complain_overflow_dont, /* complain_on_overflow */ |
| 330 | bfd_elf_generic_reloc, /* special_function */ |
| 331 | "R_FRV_FUNCDESC_GOTHI", /* name */ |
| 332 | FALSE, /* partial_inplace */ |
| 333 | 0xffff, /* src_mask */ |
| 334 | 0xffff, /* dst_mask */ |
| 335 | FALSE), /* pcrel_offset */ |
| 336 | |
| 337 | /* The lower 16 bits of the GOT offset for the address of the |
| 338 | canonical descriptor of a function. */ |
| 339 | HOWTO (R_FRV_FUNCDESC_GOTLO, /* type */ |
| 340 | 0, /* rightshift */ |
| 341 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 342 | 16, /* bitsize */ |
| 343 | FALSE, /* pc_relative */ |
| 344 | 0, /* bitpos */ |
| 345 | complain_overflow_dont, /* complain_on_overflow */ |
| 346 | bfd_elf_generic_reloc, /* special_function */ |
| 347 | "R_FRV_FUNCDESC_GOTLO", /* name */ |
| 348 | FALSE, /* partial_inplace */ |
| 349 | 0xffff, /* src_mask */ |
| 350 | 0xffff, /* dst_mask */ |
| 351 | FALSE), /* pcrel_offset */ |
| 352 | |
| 353 | /* The 64-bit descriptor of a function. */ |
| 354 | HOWTO (R_FRV_FUNCDESC_VALUE, /* type */ |
| 355 | 0, /* rightshift */ |
| 356 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 357 | 64, /* bitsize */ |
| 358 | FALSE, /* pc_relative */ |
| 359 | 0, /* bitpos */ |
| 360 | complain_overflow_bitfield, /* complain_on_overflow */ |
| 361 | bfd_elf_generic_reloc, /* special_function */ |
| 362 | "R_FRV_FUNCDESC_VALUE", /* name */ |
| 363 | FALSE, /* partial_inplace */ |
| 364 | 0xffffffff, /* src_mask */ |
| 365 | 0xffffffff, /* dst_mask */ |
| 366 | FALSE), /* pcrel_offset */ |
| 367 | |
| 368 | /* A 12-bit signed operand with the GOT offset for the address of |
| 369 | canonical descriptor of a function. */ |
| 370 | HOWTO (R_FRV_FUNCDESC_GOTOFF12, /* type */ |
| 371 | 0, /* rightshift */ |
| 372 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 373 | 12, /* bitsize */ |
| 374 | FALSE, /* pc_relative */ |
| 375 | 0, /* bitpos */ |
| 376 | complain_overflow_signed, /* complain_on_overflow */ |
| 377 | bfd_elf_generic_reloc, /* special_function */ |
| 378 | "R_FRV_FUNCDESC_GOTOFF12", /* name */ |
| 379 | FALSE, /* partial_inplace */ |
| 380 | 0xfff, /* src_mask */ |
| 381 | 0xfff, /* dst_mask */ |
| 382 | FALSE), /* pcrel_offset */ |
| 383 | |
| 384 | /* The upper 16 bits of the GOT offset for the address of the |
| 385 | canonical descriptor of a function. */ |
| 386 | HOWTO (R_FRV_FUNCDESC_GOTOFFHI, /* type */ |
| 387 | 0, /* rightshift */ |
| 388 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 389 | 16, /* bitsize */ |
| 390 | FALSE, /* pc_relative */ |
| 391 | 0, /* bitpos */ |
| 392 | complain_overflow_dont, /* complain_on_overflow */ |
| 393 | bfd_elf_generic_reloc, /* special_function */ |
| 394 | "R_FRV_FUNCDESC_GOTOFFHI", /* name */ |
| 395 | FALSE, /* partial_inplace */ |
| 396 | 0xffff, /* src_mask */ |
| 397 | 0xffff, /* dst_mask */ |
| 398 | FALSE), /* pcrel_offset */ |
| 399 | |
| 400 | /* The lower 16 bits of the GOT offset for the address of the |
| 401 | canonical descriptor of a function. */ |
| 402 | HOWTO (R_FRV_FUNCDESC_GOTOFFLO, /* type */ |
| 403 | 0, /* rightshift */ |
| 404 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 405 | 16, /* bitsize */ |
| 406 | FALSE, /* pc_relative */ |
| 407 | 0, /* bitpos */ |
| 408 | complain_overflow_dont, /* complain_on_overflow */ |
| 409 | bfd_elf_generic_reloc, /* special_function */ |
| 410 | "R_FRV_FUNCDESC_GOTOFFLO", /* name */ |
| 411 | FALSE, /* partial_inplace */ |
| 412 | 0xffff, /* src_mask */ |
| 413 | 0xffff, /* dst_mask */ |
| 414 | FALSE), /* pcrel_offset */ |
| 415 | |
| 416 | /* A 12-bit signed operand with the GOT offset for the address of |
| 417 | the symbol. */ |
| 418 | HOWTO (R_FRV_GOTOFF12, /* type */ |
| 419 | 0, /* rightshift */ |
| 420 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 421 | 12, /* bitsize */ |
| 422 | FALSE, /* pc_relative */ |
| 423 | 0, /* bitpos */ |
| 424 | complain_overflow_signed, /* complain_on_overflow */ |
| 425 | bfd_elf_generic_reloc, /* special_function */ |
| 426 | "R_FRV_GOTOFF12", /* name */ |
| 427 | FALSE, /* partial_inplace */ |
| 428 | 0xfff, /* src_mask */ |
| 429 | 0xfff, /* dst_mask */ |
| 430 | FALSE), /* pcrel_offset */ |
| 431 | |
| 432 | /* The upper 16 bits of the GOT offset for the address of the |
| 433 | symbol. */ |
| 434 | HOWTO (R_FRV_GOTOFFHI, /* type */ |
| 435 | 0, /* rightshift */ |
| 436 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 437 | 16, /* bitsize */ |
| 438 | FALSE, /* pc_relative */ |
| 439 | 0, /* bitpos */ |
| 440 | complain_overflow_dont, /* complain_on_overflow */ |
| 441 | bfd_elf_generic_reloc, /* special_function */ |
| 442 | "R_FRV_GOTOFFHI", /* name */ |
| 443 | FALSE, /* partial_inplace */ |
| 444 | 0xffff, /* src_mask */ |
| 445 | 0xffff, /* dst_mask */ |
| 446 | FALSE), /* pcrel_offset */ |
| 447 | |
| 448 | /* The lower 16 bits of the GOT offset for the address of the |
| 449 | symbol. */ |
| 450 | HOWTO (R_FRV_GOTOFFLO, /* type */ |
| 451 | 0, /* rightshift */ |
| 452 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 453 | 16, /* bitsize */ |
| 454 | FALSE, /* pc_relative */ |
| 455 | 0, /* bitpos */ |
| 456 | complain_overflow_dont, /* complain_on_overflow */ |
| 457 | bfd_elf_generic_reloc, /* special_function */ |
| 458 | "R_FRV_GOTOFFLO", /* name */ |
| 459 | FALSE, /* partial_inplace */ |
| 460 | 0xffff, /* src_mask */ |
| 461 | 0xffff, /* dst_mask */ |
| 462 | FALSE), /* pcrel_offset */ |
| 463 | |
| 464 | /* A 24-bit pc-relative relocation referencing the TLS PLT entry for |
| 465 | a thread-local symbol. If the symbol number is 0, it refers to |
| 466 | the module. */ |
| 467 | HOWTO (R_FRV_GETTLSOFF, /* type */ |
| 468 | 2, /* rightshift */ |
| 469 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 470 | 26, /* bitsize */ |
| 471 | TRUE, /* pc_relative */ |
| 472 | 0, /* bitpos */ |
| 473 | complain_overflow_bitfield, /* complain_on_overflow */ |
| 474 | bfd_elf_generic_reloc, /* special_function */ |
| 475 | "R_FRV_GETTLSOFF", /* name */ |
| 476 | FALSE, /* partial_inplace */ |
| 477 | 0x7e03ffff, /* src_mask */ |
| 478 | 0x7e03ffff, /* dst_mask */ |
| 479 | TRUE), /* pcrel_offset */ |
| 480 | |
| 481 | /* A 64-bit TLS descriptor for a symbol. This relocation is only |
| 482 | valid as a REL, dynamic relocation. */ |
| 483 | HOWTO (R_FRV_TLSDESC_VALUE, /* type */ |
| 484 | 0, /* rightshift */ |
| 485 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 486 | 64, /* bitsize */ |
| 487 | FALSE, /* pc_relative */ |
| 488 | 0, /* bitpos */ |
| 489 | complain_overflow_bitfield, /* complain_on_overflow */ |
| 490 | bfd_elf_generic_reloc, /* special_function */ |
| 491 | "R_FRV_TLSDESC_VALUE", /* name */ |
| 492 | FALSE, /* partial_inplace */ |
| 493 | 0xffffffff, /* src_mask */ |
| 494 | 0xffffffff, /* dst_mask */ |
| 495 | FALSE), /* pcrel_offset */ |
| 496 | |
| 497 | /* A 12-bit signed operand with the GOT offset for the TLS |
| 498 | descriptor of the symbol. */ |
| 499 | HOWTO (R_FRV_GOTTLSDESC12, /* type */ |
| 500 | 0, /* rightshift */ |
| 501 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 502 | 12, /* bitsize */ |
| 503 | FALSE, /* pc_relative */ |
| 504 | 0, /* bitpos */ |
| 505 | complain_overflow_signed, /* complain_on_overflow */ |
| 506 | bfd_elf_generic_reloc, /* special_function */ |
| 507 | "R_FRV_GOTTLSDESC12", /* name */ |
| 508 | FALSE, /* partial_inplace */ |
| 509 | 0xfff, /* src_mask */ |
| 510 | 0xfff, /* dst_mask */ |
| 511 | FALSE), /* pcrel_offset */ |
| 512 | |
| 513 | /* The upper 16 bits of the GOT offset for the TLS descriptor of the |
| 514 | symbol. */ |
| 515 | HOWTO (R_FRV_GOTTLSDESCHI, /* type */ |
| 516 | 0, /* rightshift */ |
| 517 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 518 | 16, /* bitsize */ |
| 519 | FALSE, /* pc_relative */ |
| 520 | 0, /* bitpos */ |
| 521 | complain_overflow_dont, /* complain_on_overflow */ |
| 522 | bfd_elf_generic_reloc, /* special_function */ |
| 523 | "R_FRV_GOTTLSDESCHI", /* name */ |
| 524 | FALSE, /* partial_inplace */ |
| 525 | 0xffff, /* src_mask */ |
| 526 | 0xffff, /* dst_mask */ |
| 527 | FALSE), /* pcrel_offset */ |
| 528 | |
| 529 | /* The lower 16 bits of the GOT offset for the TLS descriptor of the |
| 530 | symbol. */ |
| 531 | HOWTO (R_FRV_GOTTLSDESCLO, /* type */ |
| 532 | 0, /* rightshift */ |
| 533 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 534 | 16, /* bitsize */ |
| 535 | FALSE, /* pc_relative */ |
| 536 | 0, /* bitpos */ |
| 537 | complain_overflow_dont, /* complain_on_overflow */ |
| 538 | bfd_elf_generic_reloc, /* special_function */ |
| 539 | "R_FRV_GOTTLSDESCLO", /* name */ |
| 540 | FALSE, /* partial_inplace */ |
| 541 | 0xffff, /* src_mask */ |
| 542 | 0xffff, /* dst_mask */ |
| 543 | FALSE), /* pcrel_offset */ |
| 544 | |
| 545 | /* A 12-bit signed operand with the offset from the module base |
| 546 | address to the thread-local symbol address. */ |
| 547 | HOWTO (R_FRV_TLSMOFF12, /* type */ |
| 548 | 0, /* rightshift */ |
| 549 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 550 | 12, /* bitsize */ |
| 551 | FALSE, /* pc_relative */ |
| 552 | 0, /* bitpos */ |
| 553 | complain_overflow_signed, /* complain_on_overflow */ |
| 554 | bfd_elf_generic_reloc, /* special_function */ |
| 555 | "R_FRV_TLSMOFF12", /* name */ |
| 556 | FALSE, /* partial_inplace */ |
| 557 | 0xfff, /* src_mask */ |
| 558 | 0xfff, /* dst_mask */ |
| 559 | FALSE), /* pcrel_offset */ |
| 560 | |
| 561 | /* The upper 16 bits of the offset from the module base address to |
| 562 | the thread-local symbol address. */ |
| 563 | HOWTO (R_FRV_TLSMOFFHI, /* type */ |
| 564 | 0, /* rightshift */ |
| 565 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 566 | 16, /* bitsize */ |
| 567 | FALSE, /* pc_relative */ |
| 568 | 0, /* bitpos */ |
| 569 | complain_overflow_dont, /* complain_on_overflow */ |
| 570 | bfd_elf_generic_reloc, /* special_function */ |
| 571 | "R_FRV_TLSMOFFHI", /* name */ |
| 572 | FALSE, /* partial_inplace */ |
| 573 | 0xffff, /* src_mask */ |
| 574 | 0xffff, /* dst_mask */ |
| 575 | FALSE), /* pcrel_offset */ |
| 576 | |
| 577 | /* The lower 16 bits of the offset from the module base address to |
| 578 | the thread-local symbol address. */ |
| 579 | HOWTO (R_FRV_TLSMOFFLO, /* type */ |
| 580 | 0, /* rightshift */ |
| 581 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 582 | 16, /* bitsize */ |
| 583 | FALSE, /* pc_relative */ |
| 584 | 0, /* bitpos */ |
| 585 | complain_overflow_dont, /* complain_on_overflow */ |
| 586 | bfd_elf_generic_reloc, /* special_function */ |
| 587 | "R_FRV_TLSMOFFLO", /* name */ |
| 588 | FALSE, /* partial_inplace */ |
| 589 | 0xffff, /* src_mask */ |
| 590 | 0xffff, /* dst_mask */ |
| 591 | FALSE), /* pcrel_offset */ |
| 592 | |
| 593 | /* A 12-bit signed operand with the GOT offset for the TLSOFF entry |
| 594 | for a symbol. */ |
| 595 | HOWTO (R_FRV_GOTTLSOFF12, /* type */ |
| 596 | 0, /* rightshift */ |
| 597 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 598 | 12, /* bitsize */ |
| 599 | FALSE, /* pc_relative */ |
| 600 | 0, /* bitpos */ |
| 601 | complain_overflow_signed, /* complain_on_overflow */ |
| 602 | bfd_elf_generic_reloc, /* special_function */ |
| 603 | "R_FRV_GOTTLSOFF12", /* name */ |
| 604 | FALSE, /* partial_inplace */ |
| 605 | 0xfff, /* src_mask */ |
| 606 | 0xfff, /* dst_mask */ |
| 607 | FALSE), /* pcrel_offset */ |
| 608 | |
| 609 | /* The upper 16 bits of the GOT offset for the TLSOFF entry for a |
| 610 | symbol. */ |
| 611 | HOWTO (R_FRV_GOTTLSOFFHI, /* type */ |
| 612 | 0, /* rightshift */ |
| 613 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 614 | 16, /* bitsize */ |
| 615 | FALSE, /* pc_relative */ |
| 616 | 0, /* bitpos */ |
| 617 | complain_overflow_dont, /* complain_on_overflow */ |
| 618 | bfd_elf_generic_reloc, /* special_function */ |
| 619 | "R_FRV_GOTTLSOFFHI", /* name */ |
| 620 | FALSE, /* partial_inplace */ |
| 621 | 0xffff, /* src_mask */ |
| 622 | 0xffff, /* dst_mask */ |
| 623 | FALSE), /* pcrel_offset */ |
| 624 | |
| 625 | /* The lower 16 bits of the GOT offset for the TLSOFF entry for a |
| 626 | symbol. */ |
| 627 | HOWTO (R_FRV_GOTTLSOFFLO, /* type */ |
| 628 | 0, /* rightshift */ |
| 629 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 630 | 16, /* bitsize */ |
| 631 | FALSE, /* pc_relative */ |
| 632 | 0, /* bitpos */ |
| 633 | complain_overflow_dont, /* complain_on_overflow */ |
| 634 | bfd_elf_generic_reloc, /* special_function */ |
| 635 | "R_FRV_GOTTLSOFFLO", /* name */ |
| 636 | FALSE, /* partial_inplace */ |
| 637 | 0xffff, /* src_mask */ |
| 638 | 0xffff, /* dst_mask */ |
| 639 | FALSE), /* pcrel_offset */ |
| 640 | |
| 641 | /* The 32-bit offset from the thread pointer (not the module base |
| 642 | address) to a thread-local symbol. */ |
| 643 | HOWTO (R_FRV_TLSOFF, /* type */ |
| 644 | 0, /* rightshift */ |
| 645 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 646 | 32, /* bitsize */ |
| 647 | FALSE, /* pc_relative */ |
| 648 | 0, /* bitpos */ |
| 649 | complain_overflow_dont, /* complain_on_overflow */ |
| 650 | bfd_elf_generic_reloc, /* special_function */ |
| 651 | "R_FRV_TLSOFF", /* name */ |
| 652 | FALSE, /* partial_inplace */ |
| 653 | 0xffffffff, /* src_mask */ |
| 654 | 0xffffffff, /* dst_mask */ |
| 655 | FALSE), /* pcrel_offset */ |
| 656 | |
| 657 | /* An annotation for linker relaxation, that denotes the |
| 658 | symbol+addend whose TLS descriptor is referenced by the sum of |
| 659 | the two input registers of an ldd instruction. */ |
| 660 | HOWTO (R_FRV_TLSDESC_RELAX, /* type */ |
| 661 | 0, /* rightshift */ |
| 662 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 663 | 0, /* bitsize */ |
| 664 | FALSE, /* pc_relative */ |
| 665 | 0, /* bitpos */ |
| 666 | complain_overflow_dont, /* complain_on_overflow */ |
| 667 | bfd_elf_generic_reloc, /* special_function */ |
| 668 | "R_FRV_TLSDESC_RELAX", /* name */ |
| 669 | FALSE, /* partial_inplace */ |
| 670 | 0, /* src_mask */ |
| 671 | 0, /* dst_mask */ |
| 672 | FALSE), /* pcrel_offset */ |
| 673 | |
| 674 | /* An annotation for linker relaxation, that denotes the |
| 675 | symbol+addend whose TLS resolver entry point is given by the sum |
| 676 | of the two register operands of an calll instruction. */ |
| 677 | HOWTO (R_FRV_GETTLSOFF_RELAX, /* type */ |
| 678 | 0, /* rightshift */ |
| 679 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 680 | 0, /* bitsize */ |
| 681 | FALSE, /* pc_relative */ |
| 682 | 0, /* bitpos */ |
| 683 | complain_overflow_dont, /* complain_on_overflow */ |
| 684 | bfd_elf_generic_reloc, /* special_function */ |
| 685 | "R_FRV_GETTLSOFF_RELAX", /* name */ |
| 686 | FALSE, /* partial_inplace */ |
| 687 | 0, /* src_mask */ |
| 688 | 0, /* dst_mask */ |
| 689 | FALSE), /* pcrel_offset */ |
| 690 | |
| 691 | /* An annotation for linker relaxation, that denotes the |
| 692 | symbol+addend whose TLS offset GOT entry is given by the sum of |
| 693 | the two input registers of an ld instruction. */ |
| 694 | HOWTO (R_FRV_TLSOFF_RELAX, /* type */ |
| 695 | 0, /* rightshift */ |
| 696 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 697 | 0, /* bitsize */ |
| 698 | FALSE, /* pc_relative */ |
| 699 | 0, /* bitpos */ |
| 700 | complain_overflow_bitfield, /* complain_on_overflow */ |
| 701 | bfd_elf_generic_reloc, /* special_function */ |
| 702 | "R_FRV_TLSOFF_RELAX", /* name */ |
| 703 | FALSE, /* partial_inplace */ |
| 704 | 0, /* src_mask */ |
| 705 | 0, /* dst_mask */ |
| 706 | FALSE), /* pcrel_offset */ |
| 707 | |
| 708 | /* A 32-bit offset from the module base address to |
| 709 | the thread-local symbol address. */ |
| 710 | HOWTO (R_FRV_TLSMOFF, /* type */ |
| 711 | 0, /* rightshift */ |
| 712 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 713 | 32, /* bitsize */ |
| 714 | FALSE, /* pc_relative */ |
| 715 | 0, /* bitpos */ |
| 716 | complain_overflow_dont, /* complain_on_overflow */ |
| 717 | bfd_elf_generic_reloc, /* special_function */ |
| 718 | "R_FRV_TLSMOFF", /* name */ |
| 719 | FALSE, /* partial_inplace */ |
| 720 | 0xffffffff, /* src_mask */ |
| 721 | 0xffffffff, /* dst_mask */ |
| 722 | FALSE), /* pcrel_offset */ |
| 723 | }; |
| 724 | |
| 725 | /* GNU extension to record C++ vtable hierarchy. */ |
| 726 | static reloc_howto_type elf32_frv_vtinherit_howto = |
| 727 | HOWTO (R_FRV_GNU_VTINHERIT, /* type */ |
| 728 | 0, /* rightshift */ |
| 729 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 730 | 0, /* bitsize */ |
| 731 | FALSE, /* pc_relative */ |
| 732 | 0, /* bitpos */ |
| 733 | complain_overflow_dont, /* complain_on_overflow */ |
| 734 | NULL, /* special_function */ |
| 735 | "R_FRV_GNU_VTINHERIT", /* name */ |
| 736 | FALSE, /* partial_inplace */ |
| 737 | 0, /* src_mask */ |
| 738 | 0, /* dst_mask */ |
| 739 | FALSE); /* pcrel_offset */ |
| 740 | |
| 741 | /* GNU extension to record C++ vtable member usage. */ |
| 742 | static reloc_howto_type elf32_frv_vtentry_howto = |
| 743 | HOWTO (R_FRV_GNU_VTENTRY, /* type */ |
| 744 | 0, /* rightshift */ |
| 745 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 746 | 0, /* bitsize */ |
| 747 | FALSE, /* pc_relative */ |
| 748 | 0, /* bitpos */ |
| 749 | complain_overflow_dont, /* complain_on_overflow */ |
| 750 | _bfd_elf_rel_vtable_reloc_fn, /* special_function */ |
| 751 | "R_FRV_GNU_VTENTRY", /* name */ |
| 752 | FALSE, /* partial_inplace */ |
| 753 | 0, /* src_mask */ |
| 754 | 0, /* dst_mask */ |
| 755 | FALSE); /* pcrel_offset */ |
| 756 | |
| 757 | /* The following 3 relocations are REL. The only difference to the |
| 758 | entries in the table above are that partial_inplace is TRUE. */ |
| 759 | static reloc_howto_type elf32_frv_rel_32_howto = |
| 760 | HOWTO (R_FRV_32, /* type */ |
| 761 | 0, /* rightshift */ |
| 762 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 763 | 32, /* bitsize */ |
| 764 | FALSE, /* pc_relative */ |
| 765 | 0, /* bitpos */ |
| 766 | complain_overflow_bitfield, /* complain_on_overflow */ |
| 767 | bfd_elf_generic_reloc, /* special_function */ |
| 768 | "R_FRV_32", /* name */ |
| 769 | TRUE, /* partial_inplace */ |
| 770 | 0xffffffff, /* src_mask */ |
| 771 | 0xffffffff, /* dst_mask */ |
| 772 | FALSE); /* pcrel_offset */ |
| 773 | |
| 774 | static reloc_howto_type elf32_frv_rel_funcdesc_howto = |
| 775 | HOWTO (R_FRV_FUNCDESC, /* type */ |
| 776 | 0, /* rightshift */ |
| 777 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 778 | 32, /* bitsize */ |
| 779 | FALSE, /* pc_relative */ |
| 780 | 0, /* bitpos */ |
| 781 | complain_overflow_bitfield, /* complain_on_overflow */ |
| 782 | bfd_elf_generic_reloc, /* special_function */ |
| 783 | "R_FRV_FUNCDESC", /* name */ |
| 784 | TRUE, /* partial_inplace */ |
| 785 | 0xffffffff, /* src_mask */ |
| 786 | 0xffffffff, /* dst_mask */ |
| 787 | FALSE); /* pcrel_offset */ |
| 788 | |
| 789 | static reloc_howto_type elf32_frv_rel_funcdesc_value_howto = |
| 790 | HOWTO (R_FRV_FUNCDESC_VALUE, /* type */ |
| 791 | 0, /* rightshift */ |
| 792 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 793 | 64, /* bitsize */ |
| 794 | FALSE, /* pc_relative */ |
| 795 | 0, /* bitpos */ |
| 796 | complain_overflow_bitfield, /* complain_on_overflow */ |
| 797 | bfd_elf_generic_reloc, /* special_function */ |
| 798 | "R_FRV_FUNCDESC_VALUE", /* name */ |
| 799 | TRUE, /* partial_inplace */ |
| 800 | 0xffffffff, /* src_mask */ |
| 801 | 0xffffffff, /* dst_mask */ |
| 802 | FALSE); /* pcrel_offset */ |
| 803 | |
| 804 | static reloc_howto_type elf32_frv_rel_tlsdesc_value_howto = |
| 805 | /* A 64-bit TLS descriptor for a symbol. The first word resolves to |
| 806 | an entry point, and the second resolves to a special argument. |
| 807 | If the symbol turns out to be in static TLS, the entry point is a |
| 808 | return instruction, and the special argument is the TLS offset |
| 809 | for the symbol. If it's in dynamic TLS, the entry point is a TLS |
| 810 | offset resolver, and the special argument is a pointer to a data |
| 811 | structure allocated by the dynamic loader, containing the GOT |
| 812 | address for the offset resolver, the module id, the offset within |
| 813 | the module, and anything else the TLS offset resolver might need |
| 814 | to determine the TLS offset for the symbol in the running |
| 815 | thread. */ |
| 816 | HOWTO (R_FRV_TLSDESC_VALUE, /* type */ |
| 817 | 0, /* rightshift */ |
| 818 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 819 | 64, /* bitsize */ |
| 820 | FALSE, /* pc_relative */ |
| 821 | 0, /* bitpos */ |
| 822 | complain_overflow_bitfield, /* complain_on_overflow */ |
| 823 | bfd_elf_generic_reloc, /* special_function */ |
| 824 | "R_FRV_TLSDESC_VALUE", /* name */ |
| 825 | TRUE, /* partial_inplace */ |
| 826 | 0xffffffff, /* src_mask */ |
| 827 | 0xffffffff, /* dst_mask */ |
| 828 | FALSE); /* pcrel_offset */ |
| 829 | |
| 830 | static reloc_howto_type elf32_frv_rel_tlsoff_howto = |
| 831 | /* The 32-bit offset from the thread pointer (not the module base |
| 832 | address) to a thread-local symbol. */ |
| 833 | HOWTO (R_FRV_TLSOFF, /* type */ |
| 834 | 0, /* rightshift */ |
| 835 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 836 | 32, /* bitsize */ |
| 837 | FALSE, /* pc_relative */ |
| 838 | 0, /* bitpos */ |
| 839 | complain_overflow_bitfield, /* complain_on_overflow */ |
| 840 | bfd_elf_generic_reloc, /* special_function */ |
| 841 | "R_FRV_TLSOFF", /* name */ |
| 842 | TRUE, /* partial_inplace */ |
| 843 | 0xffffffff, /* src_mask */ |
| 844 | 0xffffffff, /* dst_mask */ |
| 845 | FALSE); /* pcrel_offset */ |
| 846 | |
| 847 | |
| 848 | \f |
| 849 | extern const bfd_target bfd_elf32_frvfdpic_vec; |
| 850 | #define IS_FDPIC(bfd) ((bfd)->xvec == &bfd_elf32_frvfdpic_vec) |
| 851 | |
| 852 | /* An extension of the elf hash table data structure, containing some |
| 853 | additional FRV-specific data. */ |
| 854 | struct frvfdpic_elf_link_hash_table |
| 855 | { |
| 856 | struct elf_link_hash_table elf; |
| 857 | |
| 858 | /* A pointer to the .got section. */ |
| 859 | asection *sgot; |
| 860 | /* A pointer to the .rel.got section. */ |
| 861 | asection *sgotrel; |
| 862 | /* A pointer to the .rofixup section. */ |
| 863 | asection *sgotfixup; |
| 864 | /* A pointer to the .plt section. */ |
| 865 | asection *splt; |
| 866 | /* A pointer to the .rel.plt section. */ |
| 867 | asection *spltrel; |
| 868 | /* GOT base offset. */ |
| 869 | bfd_vma got0; |
| 870 | /* Location of the first non-lazy PLT entry, i.e., the number of |
| 871 | bytes taken by lazy PLT entries. If locally-bound TLS |
| 872 | descriptors require a ret instruction, it will be placed at this |
| 873 | offset. */ |
| 874 | bfd_vma plt0; |
| 875 | /* A hash table holding information about which symbols were |
| 876 | referenced with which PIC-related relocations. */ |
| 877 | struct htab *relocs_info; |
| 878 | /* Summary reloc information collected by |
| 879 | _frvfdpic_count_got_plt_entries. */ |
| 880 | struct _frvfdpic_dynamic_got_info *g; |
| 881 | }; |
| 882 | |
| 883 | /* Get the FRV ELF linker hash table from a link_info structure. */ |
| 884 | |
| 885 | #define frvfdpic_hash_table(p) \ |
| 886 | (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \ |
| 887 | == FRV_ELF_DATA ? ((struct frvfdpic_elf_link_hash_table *) ((p)->hash)) : NULL) |
| 888 | |
| 889 | #define frvfdpic_got_section(info) \ |
| 890 | (frvfdpic_hash_table (info)->sgot) |
| 891 | #define frvfdpic_gotrel_section(info) \ |
| 892 | (frvfdpic_hash_table (info)->sgotrel) |
| 893 | #define frvfdpic_gotfixup_section(info) \ |
| 894 | (frvfdpic_hash_table (info)->sgotfixup) |
| 895 | #define frvfdpic_plt_section(info) \ |
| 896 | (frvfdpic_hash_table (info)->splt) |
| 897 | #define frvfdpic_pltrel_section(info) \ |
| 898 | (frvfdpic_hash_table (info)->spltrel) |
| 899 | #define frvfdpic_relocs_info(info) \ |
| 900 | (frvfdpic_hash_table (info)->relocs_info) |
| 901 | #define frvfdpic_got_initial_offset(info) \ |
| 902 | (frvfdpic_hash_table (info)->got0) |
| 903 | #define frvfdpic_plt_initial_offset(info) \ |
| 904 | (frvfdpic_hash_table (info)->plt0) |
| 905 | #define frvfdpic_dynamic_got_plt_info(info) \ |
| 906 | (frvfdpic_hash_table (info)->g) |
| 907 | |
| 908 | /* Currently it's the same, but if some day we have a reason to change |
| 909 | it, we'd better be using a different macro. |
| 910 | |
| 911 | FIXME: if there's any TLS PLT entry that uses local-exec or |
| 912 | initial-exec models, we could use the ret at the end of any of them |
| 913 | instead of adding one more. */ |
| 914 | #define frvfdpic_plt_tls_ret_offset(info) \ |
| 915 | (frvfdpic_plt_initial_offset (info)) |
| 916 | |
| 917 | /* The name of the dynamic interpreter. This is put in the .interp |
| 918 | section. */ |
| 919 | |
| 920 | #define ELF_DYNAMIC_INTERPRETER "/lib/ld.so.1" |
| 921 | |
| 922 | #define DEFAULT_STACK_SIZE 0x20000 |
| 923 | |
| 924 | /* This structure is used to collect the number of entries present in |
| 925 | each addressable range of the got. */ |
| 926 | struct _frvfdpic_dynamic_got_info |
| 927 | { |
| 928 | /* Several bits of information about the current link. */ |
| 929 | struct bfd_link_info *info; |
| 930 | /* Total GOT size needed for GOT entries within the 12-, 16- or 32-bit |
| 931 | ranges. */ |
| 932 | bfd_vma got12, gotlos, gothilo; |
| 933 | /* Total GOT size needed for function descriptor entries within the 12-, |
| 934 | 16- or 32-bit ranges. */ |
| 935 | bfd_vma fd12, fdlos, fdhilo; |
| 936 | /* Total GOT size needed by function descriptor entries referenced |
| 937 | in PLT entries, that would be profitable to place in offsets |
| 938 | close to the PIC register. */ |
| 939 | bfd_vma fdplt; |
| 940 | /* Total PLT size needed by lazy PLT entries. */ |
| 941 | bfd_vma lzplt; |
| 942 | /* Total GOT size needed for TLS descriptor entries within the 12-, |
| 943 | 16- or 32-bit ranges. */ |
| 944 | bfd_vma tlsd12, tlsdlos, tlsdhilo; |
| 945 | /* Total GOT size needed by TLS descriptors referenced in PLT |
| 946 | entries, that would be profitable to place in offers close to the |
| 947 | PIC register. */ |
| 948 | bfd_vma tlsdplt; |
| 949 | /* Total PLT size needed by TLS lazy PLT entries. */ |
| 950 | bfd_vma tlslzplt; |
| 951 | /* Number of relocations carried over from input object files. */ |
| 952 | unsigned long relocs; |
| 953 | /* Number of fixups introduced by relocations in input object files. */ |
| 954 | unsigned long fixups; |
| 955 | /* The number of fixups that reference the ret instruction added to |
| 956 | the PLT for locally-resolved TLS descriptors. */ |
| 957 | unsigned long tls_ret_refs; |
| 958 | }; |
| 959 | |
| 960 | /* This structure is used to assign offsets to got entries, function |
| 961 | descriptors, plt entries and lazy plt entries. */ |
| 962 | |
| 963 | struct _frvfdpic_dynamic_got_plt_info |
| 964 | { |
| 965 | /* Summary information collected with _frvfdpic_count_got_plt_entries. */ |
| 966 | struct _frvfdpic_dynamic_got_info g; |
| 967 | |
| 968 | /* For each addressable range, we record a MAX (positive) and MIN |
| 969 | (negative) value. CUR is used to assign got entries, and it's |
| 970 | incremented from an initial positive value to MAX, then from MIN |
| 971 | to FDCUR (unless FDCUR wraps around first). FDCUR is used to |
| 972 | assign function descriptors, and it's decreased from an initial |
| 973 | non-positive value to MIN, then from MAX down to CUR (unless CUR |
| 974 | wraps around first). All of MIN, MAX, CUR and FDCUR always point |
| 975 | to even words. ODD, if non-zero, indicates an odd word to be |
| 976 | used for the next got entry, otherwise CUR is used and |
| 977 | incremented by a pair of words, wrapping around when it reaches |
| 978 | MAX. FDCUR is decremented (and wrapped) before the next function |
| 979 | descriptor is chosen. FDPLT indicates the number of remaining |
| 980 | slots that can be used for function descriptors used only by PLT |
| 981 | entries. |
| 982 | |
| 983 | TMAX, TMIN and TCUR are used to assign TLS descriptors. TCUR |
| 984 | starts as MAX, and grows up to TMAX, then wraps around to TMIN |
| 985 | and grows up to MIN. TLSDPLT indicates the number of remaining |
| 986 | slots that can be used for TLS descriptors used only by TLS PLT |
| 987 | entries. */ |
| 988 | struct _frvfdpic_dynamic_got_alloc_data |
| 989 | { |
| 990 | bfd_signed_vma max, cur, odd, fdcur, min; |
| 991 | bfd_signed_vma tmax, tcur, tmin; |
| 992 | bfd_vma fdplt, tlsdplt; |
| 993 | } got12, gotlos, gothilo; |
| 994 | }; |
| 995 | |
| 996 | /* Create an FRV ELF linker hash table. */ |
| 997 | |
| 998 | static struct bfd_link_hash_table * |
| 999 | frvfdpic_elf_link_hash_table_create (bfd *abfd) |
| 1000 | { |
| 1001 | struct frvfdpic_elf_link_hash_table *ret; |
| 1002 | bfd_size_type amt = sizeof (struct frvfdpic_elf_link_hash_table); |
| 1003 | |
| 1004 | ret = bfd_zalloc (abfd, amt); |
| 1005 | if (ret == NULL) |
| 1006 | return NULL; |
| 1007 | |
| 1008 | if (!_bfd_elf_link_hash_table_init (&ret->elf, abfd, |
| 1009 | _bfd_elf_link_hash_newfunc, |
| 1010 | sizeof (struct elf_link_hash_entry), |
| 1011 | FRV_ELF_DATA)) |
| 1012 | { |
| 1013 | free (ret); |
| 1014 | return NULL; |
| 1015 | } |
| 1016 | |
| 1017 | return &ret->elf.root; |
| 1018 | } |
| 1019 | |
| 1020 | /* Decide whether a reference to a symbol can be resolved locally or |
| 1021 | not. If the symbol is protected, we want the local address, but |
| 1022 | its function descriptor must be assigned by the dynamic linker. */ |
| 1023 | #define FRVFDPIC_SYM_LOCAL(INFO, H) \ |
| 1024 | (_bfd_elf_symbol_refs_local_p ((H), (INFO), 1) \ |
| 1025 | || ! elf_hash_table (INFO)->dynamic_sections_created) |
| 1026 | #define FRVFDPIC_FUNCDESC_LOCAL(INFO, H) \ |
| 1027 | ((H)->dynindx == -1 || ! elf_hash_table (INFO)->dynamic_sections_created) |
| 1028 | |
| 1029 | /* This structure collects information on what kind of GOT, PLT or |
| 1030 | function descriptors are required by relocations that reference a |
| 1031 | certain symbol. */ |
| 1032 | struct frvfdpic_relocs_info |
| 1033 | { |
| 1034 | /* The index of the symbol, as stored in the relocation r_info, if |
| 1035 | we have a local symbol; -1 otherwise. */ |
| 1036 | long symndx; |
| 1037 | union |
| 1038 | { |
| 1039 | /* The input bfd in which the symbol is defined, if it's a local |
| 1040 | symbol. */ |
| 1041 | bfd *abfd; |
| 1042 | /* If symndx == -1, the hash table entry corresponding to a global |
| 1043 | symbol (even if it turns out to bind locally, in which case it |
| 1044 | should ideally be replaced with section's symndx + addend). */ |
| 1045 | struct elf_link_hash_entry *h; |
| 1046 | } d; |
| 1047 | /* The addend of the relocation that references the symbol. */ |
| 1048 | bfd_vma addend; |
| 1049 | |
| 1050 | /* The fields above are used to identify an entry. The fields below |
| 1051 | contain information on how an entry is used and, later on, which |
| 1052 | locations it was assigned. */ |
| 1053 | /* The following 3 fields record whether the symbol+addend above was |
| 1054 | ever referenced with a GOT relocation. The 12 suffix indicates a |
| 1055 | GOT12 relocation; los is used for GOTLO relocations that are not |
| 1056 | matched by a GOTHI relocation; hilo is used for GOTLO/GOTHI |
| 1057 | pairs. */ |
| 1058 | unsigned got12:1; |
| 1059 | unsigned gotlos:1; |
| 1060 | unsigned gothilo:1; |
| 1061 | /* Whether a FUNCDESC relocation references symbol+addend. */ |
| 1062 | unsigned fd:1; |
| 1063 | /* Whether a FUNCDESC_GOT relocation references symbol+addend. */ |
| 1064 | unsigned fdgot12:1; |
| 1065 | unsigned fdgotlos:1; |
| 1066 | unsigned fdgothilo:1; |
| 1067 | /* Whether a FUNCDESC_GOTOFF relocation references symbol+addend. */ |
| 1068 | unsigned fdgoff12:1; |
| 1069 | unsigned fdgofflos:1; |
| 1070 | unsigned fdgoffhilo:1; |
| 1071 | /* Whether a GETTLSOFF relocation references symbol+addend. */ |
| 1072 | unsigned tlsplt:1; |
| 1073 | /* FIXME: we should probably add tlspltdesc, tlspltoff and |
| 1074 | tlspltimm, to tell what kind of TLS PLT entry we're generating. |
| 1075 | We might instead just pre-compute flags telling whether the |
| 1076 | object is suitable for local exec, initial exec or general |
| 1077 | dynamic addressing, and use that all over the place. We could |
| 1078 | also try to do a better job of merging TLSOFF and TLSDESC entries |
| 1079 | in main executables, but perhaps we can get rid of TLSDESC |
| 1080 | entirely in them instead. */ |
| 1081 | /* Whether a GOTTLSDESC relocation references symbol+addend. */ |
| 1082 | unsigned tlsdesc12:1; |
| 1083 | unsigned tlsdesclos:1; |
| 1084 | unsigned tlsdeschilo:1; |
| 1085 | /* Whether a GOTTLSOFF relocation references symbol+addend. */ |
| 1086 | unsigned tlsoff12:1; |
| 1087 | unsigned tlsofflos:1; |
| 1088 | unsigned tlsoffhilo:1; |
| 1089 | /* Whether symbol+addend is referenced with GOTOFF12, GOTOFFLO or |
| 1090 | GOTOFFHI relocations. The addend doesn't really matter, since we |
| 1091 | envision that this will only be used to check whether the symbol |
| 1092 | is mapped to the same segment as the got. */ |
| 1093 | unsigned gotoff:1; |
| 1094 | /* Whether symbol+addend is referenced by a LABEL24 relocation. */ |
| 1095 | unsigned call:1; |
| 1096 | /* Whether symbol+addend is referenced by a 32 or FUNCDESC_VALUE |
| 1097 | relocation. */ |
| 1098 | unsigned sym:1; |
| 1099 | /* Whether we need a PLT entry for a symbol. Should be implied by |
| 1100 | something like: |
| 1101 | (call && symndx == -1 && ! FRVFDPIC_SYM_LOCAL (info, d.h)) */ |
| 1102 | unsigned plt:1; |
| 1103 | /* Whether a function descriptor should be created in this link unit |
| 1104 | for symbol+addend. Should be implied by something like: |
| 1105 | (plt || fdgotoff12 || fdgotofflos || fdgotofflohi |
| 1106 | || ((fd || fdgot12 || fdgotlos || fdgothilo) |
| 1107 | && (symndx != -1 || FRVFDPIC_FUNCDESC_LOCAL (info, d.h)))) */ |
| 1108 | unsigned privfd:1; |
| 1109 | /* Whether a lazy PLT entry is needed for this symbol+addend. |
| 1110 | Should be implied by something like: |
| 1111 | (privfd && symndx == -1 && ! FRVFDPIC_SYM_LOCAL (info, d.h) |
| 1112 | && ! (info->flags & DF_BIND_NOW)) */ |
| 1113 | unsigned lazyplt:1; |
| 1114 | /* Whether we've already emitted GOT relocations and PLT entries as |
| 1115 | needed for this symbol. */ |
| 1116 | unsigned done:1; |
| 1117 | |
| 1118 | /* The number of R_FRV_32, R_FRV_FUNCDESC, R_FRV_FUNCDESC_VALUE and |
| 1119 | R_FRV_TLSDESC_VALUE, R_FRV_TLSOFF relocations referencing |
| 1120 | symbol+addend. */ |
| 1121 | unsigned relocs32, relocsfd, relocsfdv, relocstlsd, relocstlsoff; |
| 1122 | |
| 1123 | /* The number of .rofixups entries and dynamic relocations allocated |
| 1124 | for this symbol, minus any that might have already been used. */ |
| 1125 | unsigned fixups, dynrelocs; |
| 1126 | |
| 1127 | /* The offsets of the GOT entries assigned to symbol+addend, to the |
| 1128 | function descriptor's address, and to a function descriptor, |
| 1129 | respectively. Should be zero if unassigned. The offsets are |
| 1130 | counted from the value that will be assigned to the PIC register, |
| 1131 | not from the beginning of the .got section. */ |
| 1132 | bfd_signed_vma got_entry, fdgot_entry, fd_entry; |
| 1133 | /* The offsets of the PLT entries assigned to symbol+addend, |
| 1134 | non-lazy and lazy, respectively. If unassigned, should be |
| 1135 | (bfd_vma)-1. */ |
| 1136 | bfd_vma plt_entry, lzplt_entry; |
| 1137 | /* The offsets of the GOT entries for TLS offset and TLS descriptor. */ |
| 1138 | bfd_signed_vma tlsoff_entry, tlsdesc_entry; |
| 1139 | /* The offset of the TLS offset PLT entry. */ |
| 1140 | bfd_vma tlsplt_entry; |
| 1141 | }; |
| 1142 | |
| 1143 | /* Compute a hash with the key fields of an frvfdpic_relocs_info entry. */ |
| 1144 | static hashval_t |
| 1145 | frvfdpic_relocs_info_hash (const void *entry_) |
| 1146 | { |
| 1147 | const struct frvfdpic_relocs_info *entry = entry_; |
| 1148 | |
| 1149 | return (entry->symndx == -1 |
| 1150 | ? (long) entry->d.h->root.root.hash |
| 1151 | : entry->symndx + (long) entry->d.abfd->id * 257) + entry->addend; |
| 1152 | } |
| 1153 | |
| 1154 | /* Test whether the key fields of two frvfdpic_relocs_info entries are |
| 1155 | identical. */ |
| 1156 | static int |
| 1157 | frvfdpic_relocs_info_eq (const void *entry1, const void *entry2) |
| 1158 | { |
| 1159 | const struct frvfdpic_relocs_info *e1 = entry1; |
| 1160 | const struct frvfdpic_relocs_info *e2 = entry2; |
| 1161 | |
| 1162 | return e1->symndx == e2->symndx && e1->addend == e2->addend |
| 1163 | && (e1->symndx == -1 ? e1->d.h == e2->d.h : e1->d.abfd == e2->d.abfd); |
| 1164 | } |
| 1165 | |
| 1166 | /* Find or create an entry in a hash table HT that matches the key |
| 1167 | fields of the given ENTRY. If it's not found, memory for a new |
| 1168 | entry is allocated in ABFD's obstack. */ |
| 1169 | static struct frvfdpic_relocs_info * |
| 1170 | frvfdpic_relocs_info_find (struct htab *ht, |
| 1171 | bfd *abfd, |
| 1172 | const struct frvfdpic_relocs_info *entry, |
| 1173 | enum insert_option insert) |
| 1174 | { |
| 1175 | struct frvfdpic_relocs_info **loc = |
| 1176 | (struct frvfdpic_relocs_info **) htab_find_slot (ht, entry, insert); |
| 1177 | |
| 1178 | if (! loc) |
| 1179 | return NULL; |
| 1180 | |
| 1181 | if (*loc) |
| 1182 | return *loc; |
| 1183 | |
| 1184 | *loc = bfd_zalloc (abfd, sizeof (**loc)); |
| 1185 | |
| 1186 | if (! *loc) |
| 1187 | return *loc; |
| 1188 | |
| 1189 | (*loc)->symndx = entry->symndx; |
| 1190 | (*loc)->d = entry->d; |
| 1191 | (*loc)->addend = entry->addend; |
| 1192 | (*loc)->plt_entry = (bfd_vma)-1; |
| 1193 | (*loc)->lzplt_entry = (bfd_vma)-1; |
| 1194 | (*loc)->tlsplt_entry = (bfd_vma)-1; |
| 1195 | |
| 1196 | return *loc; |
| 1197 | } |
| 1198 | |
| 1199 | /* Obtain the address of the entry in HT associated with H's symbol + |
| 1200 | addend, creating a new entry if none existed. ABFD is only used |
| 1201 | for memory allocation purposes. */ |
| 1202 | inline static struct frvfdpic_relocs_info * |
| 1203 | frvfdpic_relocs_info_for_global (struct htab *ht, |
| 1204 | bfd *abfd, |
| 1205 | struct elf_link_hash_entry *h, |
| 1206 | bfd_vma addend, |
| 1207 | enum insert_option insert) |
| 1208 | { |
| 1209 | struct frvfdpic_relocs_info entry; |
| 1210 | |
| 1211 | entry.symndx = -1; |
| 1212 | entry.d.h = h; |
| 1213 | entry.addend = addend; |
| 1214 | |
| 1215 | return frvfdpic_relocs_info_find (ht, abfd, &entry, insert); |
| 1216 | } |
| 1217 | |
| 1218 | /* Obtain the address of the entry in HT associated with the SYMNDXth |
| 1219 | local symbol of the input bfd ABFD, plus the addend, creating a new |
| 1220 | entry if none existed. */ |
| 1221 | inline static struct frvfdpic_relocs_info * |
| 1222 | frvfdpic_relocs_info_for_local (struct htab *ht, |
| 1223 | bfd *abfd, |
| 1224 | long symndx, |
| 1225 | bfd_vma addend, |
| 1226 | enum insert_option insert) |
| 1227 | { |
| 1228 | struct frvfdpic_relocs_info entry; |
| 1229 | |
| 1230 | entry.symndx = symndx; |
| 1231 | entry.d.abfd = abfd; |
| 1232 | entry.addend = addend; |
| 1233 | |
| 1234 | return frvfdpic_relocs_info_find (ht, abfd, &entry, insert); |
| 1235 | } |
| 1236 | |
| 1237 | /* Merge fields set by check_relocs() of two entries that end up being |
| 1238 | mapped to the same (presumably global) symbol. */ |
| 1239 | |
| 1240 | inline static void |
| 1241 | frvfdpic_pic_merge_early_relocs_info (struct frvfdpic_relocs_info *e2, |
| 1242 | struct frvfdpic_relocs_info const *e1) |
| 1243 | { |
| 1244 | e2->got12 |= e1->got12; |
| 1245 | e2->gotlos |= e1->gotlos; |
| 1246 | e2->gothilo |= e1->gothilo; |
| 1247 | e2->fd |= e1->fd; |
| 1248 | e2->fdgot12 |= e1->fdgot12; |
| 1249 | e2->fdgotlos |= e1->fdgotlos; |
| 1250 | e2->fdgothilo |= e1->fdgothilo; |
| 1251 | e2->fdgoff12 |= e1->fdgoff12; |
| 1252 | e2->fdgofflos |= e1->fdgofflos; |
| 1253 | e2->fdgoffhilo |= e1->fdgoffhilo; |
| 1254 | e2->tlsplt |= e1->tlsplt; |
| 1255 | e2->tlsdesc12 |= e1->tlsdesc12; |
| 1256 | e2->tlsdesclos |= e1->tlsdesclos; |
| 1257 | e2->tlsdeschilo |= e1->tlsdeschilo; |
| 1258 | e2->tlsoff12 |= e1->tlsoff12; |
| 1259 | e2->tlsofflos |= e1->tlsofflos; |
| 1260 | e2->tlsoffhilo |= e1->tlsoffhilo; |
| 1261 | e2->gotoff |= e1->gotoff; |
| 1262 | e2->call |= e1->call; |
| 1263 | e2->sym |= e1->sym; |
| 1264 | } |
| 1265 | |
| 1266 | /* Every block of 65535 lazy PLT entries shares a single call to the |
| 1267 | resolver, inserted in the 32768th lazy PLT entry (i.e., entry # |
| 1268 | 32767, counting from 0). All other lazy PLT entries branch to it |
| 1269 | in a single instruction. */ |
| 1270 | |
| 1271 | #define FRVFDPIC_LZPLT_BLOCK_SIZE ((bfd_vma) 8 * 65535 + 4) |
| 1272 | #define FRVFDPIC_LZPLT_RESOLV_LOC (8 * 32767) |
| 1273 | |
| 1274 | /* Add a dynamic relocation to the SRELOC section. */ |
| 1275 | |
| 1276 | inline static bfd_vma |
| 1277 | _frvfdpic_add_dyn_reloc (bfd *output_bfd, asection *sreloc, bfd_vma offset, |
| 1278 | int reloc_type, long dynindx, bfd_vma addend, |
| 1279 | struct frvfdpic_relocs_info *entry) |
| 1280 | { |
| 1281 | Elf_Internal_Rela outrel; |
| 1282 | bfd_vma reloc_offset; |
| 1283 | |
| 1284 | outrel.r_offset = offset; |
| 1285 | outrel.r_info = ELF32_R_INFO (dynindx, reloc_type); |
| 1286 | outrel.r_addend = addend; |
| 1287 | |
| 1288 | reloc_offset = sreloc->reloc_count * sizeof (Elf32_External_Rel); |
| 1289 | BFD_ASSERT (reloc_offset < sreloc->size); |
| 1290 | bfd_elf32_swap_reloc_out (output_bfd, &outrel, |
| 1291 | sreloc->contents + reloc_offset); |
| 1292 | sreloc->reloc_count++; |
| 1293 | |
| 1294 | /* If the entry's index is zero, this relocation was probably to a |
| 1295 | linkonce section that got discarded. We reserved a dynamic |
| 1296 | relocation, but it was for another entry than the one we got at |
| 1297 | the time of emitting the relocation. Unfortunately there's no |
| 1298 | simple way for us to catch this situation, since the relocation |
| 1299 | is cleared right before calling relocate_section, at which point |
| 1300 | we no longer know what the relocation used to point to. */ |
| 1301 | if (entry->symndx) |
| 1302 | { |
| 1303 | BFD_ASSERT (entry->dynrelocs > 0); |
| 1304 | entry->dynrelocs--; |
| 1305 | } |
| 1306 | |
| 1307 | return reloc_offset; |
| 1308 | } |
| 1309 | |
| 1310 | /* Add a fixup to the ROFIXUP section. */ |
| 1311 | |
| 1312 | static bfd_vma |
| 1313 | _frvfdpic_add_rofixup (bfd *output_bfd, asection *rofixup, bfd_vma offset, |
| 1314 | struct frvfdpic_relocs_info *entry) |
| 1315 | { |
| 1316 | bfd_vma fixup_offset; |
| 1317 | |
| 1318 | if (rofixup->flags & SEC_EXCLUDE) |
| 1319 | return -1; |
| 1320 | |
| 1321 | fixup_offset = rofixup->reloc_count * 4; |
| 1322 | if (rofixup->contents) |
| 1323 | { |
| 1324 | BFD_ASSERT (fixup_offset < rofixup->size); |
| 1325 | bfd_put_32 (output_bfd, offset, rofixup->contents + fixup_offset); |
| 1326 | } |
| 1327 | rofixup->reloc_count++; |
| 1328 | |
| 1329 | if (entry && entry->symndx) |
| 1330 | { |
| 1331 | /* See discussion about symndx == 0 in _frvfdpic_add_dyn_reloc |
| 1332 | above. */ |
| 1333 | BFD_ASSERT (entry->fixups > 0); |
| 1334 | entry->fixups--; |
| 1335 | } |
| 1336 | |
| 1337 | return fixup_offset; |
| 1338 | } |
| 1339 | |
| 1340 | /* Find the segment number in which OSEC, and output section, is |
| 1341 | located. */ |
| 1342 | |
| 1343 | static unsigned |
| 1344 | _frvfdpic_osec_to_segment (bfd *output_bfd, asection *osec) |
| 1345 | { |
| 1346 | Elf_Internal_Phdr *p = _bfd_elf_find_segment_containing_section (output_bfd, osec); |
| 1347 | |
| 1348 | return (p != NULL) ? p - elf_tdata (output_bfd)->phdr : -1; |
| 1349 | } |
| 1350 | |
| 1351 | inline static bfd_boolean |
| 1352 | _frvfdpic_osec_readonly_p (bfd *output_bfd, asection *osec) |
| 1353 | { |
| 1354 | unsigned seg = _frvfdpic_osec_to_segment (output_bfd, osec); |
| 1355 | |
| 1356 | return ! (elf_tdata (output_bfd)->phdr[seg].p_flags & PF_W); |
| 1357 | } |
| 1358 | |
| 1359 | #define FRVFDPIC_TLS_BIAS (2048 - 16) |
| 1360 | |
| 1361 | /* Return the base VMA address which should be subtracted from real addresses |
| 1362 | when resolving TLSMOFF relocation. |
| 1363 | This is PT_TLS segment p_vaddr, plus the 2048-16 bias. */ |
| 1364 | |
| 1365 | static bfd_vma |
| 1366 | tls_biased_base (struct bfd_link_info *info) |
| 1367 | { |
| 1368 | /* If tls_sec is NULL, we should have signalled an error already. */ |
| 1369 | if (elf_hash_table (info)->tls_sec == NULL) |
| 1370 | return FRVFDPIC_TLS_BIAS; |
| 1371 | return elf_hash_table (info)->tls_sec->vma + FRVFDPIC_TLS_BIAS; |
| 1372 | } |
| 1373 | |
| 1374 | /* Generate relocations for GOT entries, function descriptors, and |
| 1375 | code for PLT and lazy PLT entries. */ |
| 1376 | |
| 1377 | inline static bfd_boolean |
| 1378 | _frvfdpic_emit_got_relocs_plt_entries (struct frvfdpic_relocs_info *entry, |
| 1379 | bfd *output_bfd, |
| 1380 | struct bfd_link_info *info, |
| 1381 | asection *sec, |
| 1382 | Elf_Internal_Sym *sym, |
| 1383 | bfd_vma addend) |
| 1384 | |
| 1385 | { |
| 1386 | bfd_vma fd_lazy_rel_offset = (bfd_vma)-1; |
| 1387 | int dynindx = -1; |
| 1388 | |
| 1389 | if (entry->done) |
| 1390 | return TRUE; |
| 1391 | entry->done = 1; |
| 1392 | |
| 1393 | if (entry->got_entry || entry->fdgot_entry || entry->fd_entry |
| 1394 | || entry->tlsoff_entry || entry->tlsdesc_entry) |
| 1395 | { |
| 1396 | /* If the symbol is dynamic, consider it for dynamic |
| 1397 | relocations, otherwise decay to section + offset. */ |
| 1398 | if (entry->symndx == -1 && entry->d.h->dynindx != -1) |
| 1399 | dynindx = entry->d.h->dynindx; |
| 1400 | else |
| 1401 | { |
| 1402 | if (sec |
| 1403 | && sec->output_section |
| 1404 | && ! bfd_is_abs_section (sec->output_section) |
| 1405 | && ! bfd_is_und_section (sec->output_section)) |
| 1406 | dynindx = elf_section_data (sec->output_section)->dynindx; |
| 1407 | else |
| 1408 | dynindx = 0; |
| 1409 | } |
| 1410 | } |
| 1411 | |
| 1412 | /* Generate relocation for GOT entry pointing to the symbol. */ |
| 1413 | if (entry->got_entry) |
| 1414 | { |
| 1415 | int idx = dynindx; |
| 1416 | bfd_vma ad = addend; |
| 1417 | |
| 1418 | /* If the symbol is dynamic but binds locally, use |
| 1419 | section+offset. */ |
| 1420 | if (sec && (entry->symndx != -1 |
| 1421 | || FRVFDPIC_SYM_LOCAL (info, entry->d.h))) |
| 1422 | { |
| 1423 | if (entry->symndx == -1) |
| 1424 | ad += entry->d.h->root.u.def.value; |
| 1425 | else |
| 1426 | ad += sym->st_value; |
| 1427 | ad += sec->output_offset; |
| 1428 | if (sec->output_section && elf_section_data (sec->output_section)) |
| 1429 | idx = elf_section_data (sec->output_section)->dynindx; |
| 1430 | else |
| 1431 | idx = 0; |
| 1432 | } |
| 1433 | |
| 1434 | /* If we're linking an executable at a fixed address, we can |
| 1435 | omit the dynamic relocation as long as the symbol is local to |
| 1436 | this module. */ |
| 1437 | if (info->executable && !info->pie |
| 1438 | && (entry->symndx != -1 |
| 1439 | || FRVFDPIC_SYM_LOCAL (info, entry->d.h))) |
| 1440 | { |
| 1441 | if (sec) |
| 1442 | ad += sec->output_section->vma; |
| 1443 | if (entry->symndx != -1 |
| 1444 | || entry->d.h->root.type != bfd_link_hash_undefweak) |
| 1445 | _frvfdpic_add_rofixup (output_bfd, |
| 1446 | frvfdpic_gotfixup_section (info), |
| 1447 | frvfdpic_got_section (info)->output_section |
| 1448 | ->vma |
| 1449 | + frvfdpic_got_section (info)->output_offset |
| 1450 | + frvfdpic_got_initial_offset (info) |
| 1451 | + entry->got_entry, entry); |
| 1452 | } |
| 1453 | else |
| 1454 | _frvfdpic_add_dyn_reloc (output_bfd, frvfdpic_gotrel_section (info), |
| 1455 | _bfd_elf_section_offset |
| 1456 | (output_bfd, info, |
| 1457 | frvfdpic_got_section (info), |
| 1458 | frvfdpic_got_initial_offset (info) |
| 1459 | + entry->got_entry) |
| 1460 | + frvfdpic_got_section (info) |
| 1461 | ->output_section->vma |
| 1462 | + frvfdpic_got_section (info)->output_offset, |
| 1463 | R_FRV_32, idx, ad, entry); |
| 1464 | |
| 1465 | bfd_put_32 (output_bfd, ad, |
| 1466 | frvfdpic_got_section (info)->contents |
| 1467 | + frvfdpic_got_initial_offset (info) |
| 1468 | + entry->got_entry); |
| 1469 | } |
| 1470 | |
| 1471 | /* Generate relocation for GOT entry pointing to a canonical |
| 1472 | function descriptor. */ |
| 1473 | if (entry->fdgot_entry) |
| 1474 | { |
| 1475 | int reloc, idx; |
| 1476 | bfd_vma ad = 0; |
| 1477 | |
| 1478 | if (! (entry->symndx == -1 |
| 1479 | && entry->d.h->root.type == bfd_link_hash_undefweak |
| 1480 | && FRVFDPIC_SYM_LOCAL (info, entry->d.h))) |
| 1481 | { |
| 1482 | /* If the symbol is dynamic and there may be dynamic symbol |
| 1483 | resolution because we are, or are linked with, a shared |
| 1484 | library, emit a FUNCDESC relocation such that the dynamic |
| 1485 | linker will allocate the function descriptor. If the |
| 1486 | symbol needs a non-local function descriptor but binds |
| 1487 | locally (e.g., its visibility is protected, emit a |
| 1488 | dynamic relocation decayed to section+offset. */ |
| 1489 | if (entry->symndx == -1 |
| 1490 | && ! FRVFDPIC_FUNCDESC_LOCAL (info, entry->d.h) |
| 1491 | && FRVFDPIC_SYM_LOCAL (info, entry->d.h) |
| 1492 | && !(info->executable && !info->pie)) |
| 1493 | { |
| 1494 | reloc = R_FRV_FUNCDESC; |
| 1495 | idx = elf_section_data (entry->d.h->root.u.def.section |
| 1496 | ->output_section)->dynindx; |
| 1497 | ad = entry->d.h->root.u.def.section->output_offset |
| 1498 | + entry->d.h->root.u.def.value; |
| 1499 | } |
| 1500 | else if (entry->symndx == -1 |
| 1501 | && ! FRVFDPIC_FUNCDESC_LOCAL (info, entry->d.h)) |
| 1502 | { |
| 1503 | reloc = R_FRV_FUNCDESC; |
| 1504 | idx = dynindx; |
| 1505 | ad = addend; |
| 1506 | if (ad) |
| 1507 | { |
| 1508 | (*info->callbacks->reloc_dangerous) |
| 1509 | (info, _("relocation requires zero addend"), |
| 1510 | elf_hash_table (info)->dynobj, |
| 1511 | frvfdpic_got_section (info), |
| 1512 | entry->fdgot_entry); |
| 1513 | return FALSE; |
| 1514 | } |
| 1515 | } |
| 1516 | else |
| 1517 | { |
| 1518 | /* Otherwise, we know we have a private function descriptor, |
| 1519 | so reference it directly. */ |
| 1520 | if (elf_hash_table (info)->dynamic_sections_created) |
| 1521 | BFD_ASSERT (entry->privfd); |
| 1522 | reloc = R_FRV_32; |
| 1523 | idx = elf_section_data (frvfdpic_got_section (info) |
| 1524 | ->output_section)->dynindx; |
| 1525 | ad = frvfdpic_got_section (info)->output_offset |
| 1526 | + frvfdpic_got_initial_offset (info) + entry->fd_entry; |
| 1527 | } |
| 1528 | |
| 1529 | /* If there is room for dynamic symbol resolution, emit the |
| 1530 | dynamic relocation. However, if we're linking an |
| 1531 | executable at a fixed location, we won't have emitted a |
| 1532 | dynamic symbol entry for the got section, so idx will be |
| 1533 | zero, which means we can and should compute the address |
| 1534 | of the private descriptor ourselves. */ |
| 1535 | if (info->executable && !info->pie |
| 1536 | && (entry->symndx != -1 |
| 1537 | || FRVFDPIC_FUNCDESC_LOCAL (info, entry->d.h))) |
| 1538 | { |
| 1539 | ad += frvfdpic_got_section (info)->output_section->vma; |
| 1540 | _frvfdpic_add_rofixup (output_bfd, |
| 1541 | frvfdpic_gotfixup_section (info), |
| 1542 | frvfdpic_got_section (info) |
| 1543 | ->output_section->vma |
| 1544 | + frvfdpic_got_section (info) |
| 1545 | ->output_offset |
| 1546 | + frvfdpic_got_initial_offset (info) |
| 1547 | + entry->fdgot_entry, entry); |
| 1548 | } |
| 1549 | else |
| 1550 | _frvfdpic_add_dyn_reloc (output_bfd, |
| 1551 | frvfdpic_gotrel_section (info), |
| 1552 | _bfd_elf_section_offset |
| 1553 | (output_bfd, info, |
| 1554 | frvfdpic_got_section (info), |
| 1555 | frvfdpic_got_initial_offset (info) |
| 1556 | + entry->fdgot_entry) |
| 1557 | + frvfdpic_got_section (info) |
| 1558 | ->output_section->vma |
| 1559 | + frvfdpic_got_section (info) |
| 1560 | ->output_offset, |
| 1561 | reloc, idx, ad, entry); |
| 1562 | } |
| 1563 | |
| 1564 | bfd_put_32 (output_bfd, ad, |
| 1565 | frvfdpic_got_section (info)->contents |
| 1566 | + frvfdpic_got_initial_offset (info) |
| 1567 | + entry->fdgot_entry); |
| 1568 | } |
| 1569 | |
| 1570 | /* Generate relocation to fill in a private function descriptor in |
| 1571 | the GOT. */ |
| 1572 | if (entry->fd_entry) |
| 1573 | { |
| 1574 | int idx = dynindx; |
| 1575 | bfd_vma ad = addend; |
| 1576 | bfd_vma ofst; |
| 1577 | long lowword, highword; |
| 1578 | |
| 1579 | /* If the symbol is dynamic but binds locally, use |
| 1580 | section+offset. */ |
| 1581 | if (sec && (entry->symndx != -1 |
| 1582 | || FRVFDPIC_SYM_LOCAL (info, entry->d.h))) |
| 1583 | { |
| 1584 | if (entry->symndx == -1) |
| 1585 | ad += entry->d.h->root.u.def.value; |
| 1586 | else |
| 1587 | ad += sym->st_value; |
| 1588 | ad += sec->output_offset; |
| 1589 | if (sec->output_section && elf_section_data (sec->output_section)) |
| 1590 | idx = elf_section_data (sec->output_section)->dynindx; |
| 1591 | else |
| 1592 | idx = 0; |
| 1593 | } |
| 1594 | |
| 1595 | /* If we're linking an executable at a fixed address, we can |
| 1596 | omit the dynamic relocation as long as the symbol is local to |
| 1597 | this module. */ |
| 1598 | if (info->executable && !info->pie |
| 1599 | && (entry->symndx != -1 || FRVFDPIC_SYM_LOCAL (info, entry->d.h))) |
| 1600 | { |
| 1601 | if (sec) |
| 1602 | ad += sec->output_section->vma; |
| 1603 | ofst = 0; |
| 1604 | if (entry->symndx != -1 |
| 1605 | || entry->d.h->root.type != bfd_link_hash_undefweak) |
| 1606 | { |
| 1607 | _frvfdpic_add_rofixup (output_bfd, |
| 1608 | frvfdpic_gotfixup_section (info), |
| 1609 | frvfdpic_got_section (info) |
| 1610 | ->output_section->vma |
| 1611 | + frvfdpic_got_section (info) |
| 1612 | ->output_offset |
| 1613 | + frvfdpic_got_initial_offset (info) |
| 1614 | + entry->fd_entry, entry); |
| 1615 | _frvfdpic_add_rofixup (output_bfd, |
| 1616 | frvfdpic_gotfixup_section (info), |
| 1617 | frvfdpic_got_section (info) |
| 1618 | ->output_section->vma |
| 1619 | + frvfdpic_got_section (info) |
| 1620 | ->output_offset |
| 1621 | + frvfdpic_got_initial_offset (info) |
| 1622 | + entry->fd_entry + 4, entry); |
| 1623 | } |
| 1624 | } |
| 1625 | else |
| 1626 | { |
| 1627 | ofst = |
| 1628 | _frvfdpic_add_dyn_reloc (output_bfd, |
| 1629 | entry->lazyplt |
| 1630 | ? frvfdpic_pltrel_section (info) |
| 1631 | : frvfdpic_gotrel_section (info), |
| 1632 | _bfd_elf_section_offset |
| 1633 | (output_bfd, info, |
| 1634 | frvfdpic_got_section (info), |
| 1635 | frvfdpic_got_initial_offset (info) |
| 1636 | + entry->fd_entry) |
| 1637 | + frvfdpic_got_section (info) |
| 1638 | ->output_section->vma |
| 1639 | + frvfdpic_got_section (info) |
| 1640 | ->output_offset, |
| 1641 | R_FRV_FUNCDESC_VALUE, idx, ad, entry); |
| 1642 | } |
| 1643 | |
| 1644 | /* If we've omitted the dynamic relocation, just emit the fixed |
| 1645 | addresses of the symbol and of the local GOT base offset. */ |
| 1646 | if (info->executable && !info->pie && sec && sec->output_section) |
| 1647 | { |
| 1648 | lowword = ad; |
| 1649 | highword = frvfdpic_got_section (info)->output_section->vma |
| 1650 | + frvfdpic_got_section (info)->output_offset |
| 1651 | + frvfdpic_got_initial_offset (info); |
| 1652 | } |
| 1653 | else if (entry->lazyplt) |
| 1654 | { |
| 1655 | if (ad) |
| 1656 | { |
| 1657 | (*info->callbacks->reloc_dangerous) |
| 1658 | (info, _("relocation requires zero addend"), |
| 1659 | elf_hash_table (info)->dynobj, |
| 1660 | frvfdpic_got_section (info), |
| 1661 | entry->fd_entry); |
| 1662 | return FALSE; |
| 1663 | } |
| 1664 | |
| 1665 | fd_lazy_rel_offset = ofst; |
| 1666 | |
| 1667 | /* A function descriptor used for lazy or local resolving is |
| 1668 | initialized such that its high word contains the output |
| 1669 | section index in which the PLT entries are located, and |
| 1670 | the low word contains the address of the lazy PLT entry |
| 1671 | entry point, that must be within the memory region |
| 1672 | assigned to that section. */ |
| 1673 | lowword = entry->lzplt_entry + 4 |
| 1674 | + frvfdpic_plt_section (info)->output_offset |
| 1675 | + frvfdpic_plt_section (info)->output_section->vma; |
| 1676 | highword = _frvfdpic_osec_to_segment |
| 1677 | (output_bfd, frvfdpic_plt_section (info)->output_section); |
| 1678 | } |
| 1679 | else |
| 1680 | { |
| 1681 | /* A function descriptor for a local function gets the index |
| 1682 | of the section. For a non-local function, it's |
| 1683 | disregarded. */ |
| 1684 | lowword = ad; |
| 1685 | if (sec == NULL |
| 1686 | || (entry->symndx == -1 && entry->d.h->dynindx != -1 |
| 1687 | && entry->d.h->dynindx == idx)) |
| 1688 | highword = 0; |
| 1689 | else |
| 1690 | highword = _frvfdpic_osec_to_segment |
| 1691 | (output_bfd, sec->output_section); |
| 1692 | } |
| 1693 | |
| 1694 | bfd_put_32 (output_bfd, lowword, |
| 1695 | frvfdpic_got_section (info)->contents |
| 1696 | + frvfdpic_got_initial_offset (info) |
| 1697 | + entry->fd_entry); |
| 1698 | bfd_put_32 (output_bfd, highword, |
| 1699 | frvfdpic_got_section (info)->contents |
| 1700 | + frvfdpic_got_initial_offset (info) |
| 1701 | + entry->fd_entry + 4); |
| 1702 | } |
| 1703 | |
| 1704 | /* Generate code for the PLT entry. */ |
| 1705 | if (entry->plt_entry != (bfd_vma) -1) |
| 1706 | { |
| 1707 | bfd_byte *plt_code = frvfdpic_plt_section (info)->contents |
| 1708 | + entry->plt_entry; |
| 1709 | |
| 1710 | BFD_ASSERT (entry->fd_entry); |
| 1711 | |
| 1712 | /* Figure out what kind of PLT entry we need, depending on the |
| 1713 | location of the function descriptor within the GOT. */ |
| 1714 | if (entry->fd_entry >= -(1 << (12 - 1)) |
| 1715 | && entry->fd_entry < (1 << (12 - 1))) |
| 1716 | { |
| 1717 | /* lddi @(gr15, fd_entry), gr14 */ |
| 1718 | bfd_put_32 (output_bfd, |
| 1719 | 0x9cccf000 | (entry->fd_entry & ((1 << 12) - 1)), |
| 1720 | plt_code); |
| 1721 | plt_code += 4; |
| 1722 | } |
| 1723 | else |
| 1724 | { |
| 1725 | if (entry->fd_entry >= -(1 << (16 - 1)) |
| 1726 | && entry->fd_entry < (1 << (16 - 1))) |
| 1727 | { |
| 1728 | /* setlos lo(fd_entry), gr14 */ |
| 1729 | bfd_put_32 (output_bfd, |
| 1730 | 0x9cfc0000 |
| 1731 | | (entry->fd_entry & (((bfd_vma)1 << 16) - 1)), |
| 1732 | plt_code); |
| 1733 | plt_code += 4; |
| 1734 | } |
| 1735 | else |
| 1736 | { |
| 1737 | /* sethi.p hi(fd_entry), gr14 |
| 1738 | setlo lo(fd_entry), gr14 */ |
| 1739 | bfd_put_32 (output_bfd, |
| 1740 | 0x1cf80000 |
| 1741 | | ((entry->fd_entry >> 16) |
| 1742 | & (((bfd_vma)1 << 16) - 1)), |
| 1743 | plt_code); |
| 1744 | plt_code += 4; |
| 1745 | bfd_put_32 (output_bfd, |
| 1746 | 0x9cf40000 |
| 1747 | | (entry->fd_entry & (((bfd_vma)1 << 16) - 1)), |
| 1748 | plt_code); |
| 1749 | plt_code += 4; |
| 1750 | } |
| 1751 | /* ldd @(gr14,gr15),gr14 */ |
| 1752 | bfd_put_32 (output_bfd, 0x9c08e14f, plt_code); |
| 1753 | plt_code += 4; |
| 1754 | } |
| 1755 | /* jmpl @(gr14,gr0) */ |
| 1756 | bfd_put_32 (output_bfd, 0x8030e000, plt_code); |
| 1757 | } |
| 1758 | |
| 1759 | /* Generate code for the lazy PLT entry. */ |
| 1760 | if (entry->lzplt_entry != (bfd_vma) -1) |
| 1761 | { |
| 1762 | bfd_byte *lzplt_code = frvfdpic_plt_section (info)->contents |
| 1763 | + entry->lzplt_entry; |
| 1764 | bfd_vma resolverStub_addr; |
| 1765 | |
| 1766 | bfd_put_32 (output_bfd, fd_lazy_rel_offset, lzplt_code); |
| 1767 | lzplt_code += 4; |
| 1768 | |
| 1769 | resolverStub_addr = entry->lzplt_entry / FRVFDPIC_LZPLT_BLOCK_SIZE |
| 1770 | * FRVFDPIC_LZPLT_BLOCK_SIZE + FRVFDPIC_LZPLT_RESOLV_LOC; |
| 1771 | if (resolverStub_addr >= frvfdpic_plt_initial_offset (info)) |
| 1772 | resolverStub_addr = frvfdpic_plt_initial_offset (info) - 12; |
| 1773 | |
| 1774 | if (entry->lzplt_entry == resolverStub_addr) |
| 1775 | { |
| 1776 | /* This is a lazy PLT entry that includes a resolver call. */ |
| 1777 | /* ldd @(gr15,gr0), gr4 |
| 1778 | jmpl @(gr4,gr0) */ |
| 1779 | bfd_put_32 (output_bfd, 0x8808f140, lzplt_code); |
| 1780 | bfd_put_32 (output_bfd, 0x80304000, lzplt_code + 4); |
| 1781 | } |
| 1782 | else |
| 1783 | { |
| 1784 | /* bra resolverStub */ |
| 1785 | bfd_put_32 (output_bfd, |
| 1786 | 0xc01a0000 |
| 1787 | | (((resolverStub_addr - entry->lzplt_entry) |
| 1788 | / 4) & (((bfd_vma)1 << 16) - 1)), |
| 1789 | lzplt_code); |
| 1790 | } |
| 1791 | } |
| 1792 | |
| 1793 | /* Generate relocation for GOT entry holding the TLS offset. */ |
| 1794 | if (entry->tlsoff_entry) |
| 1795 | { |
| 1796 | int idx = dynindx; |
| 1797 | bfd_vma ad = addend; |
| 1798 | |
| 1799 | if (entry->symndx != -1 |
| 1800 | || FRVFDPIC_SYM_LOCAL (info, entry->d.h)) |
| 1801 | { |
| 1802 | /* If the symbol is dynamic but binds locally, use |
| 1803 | section+offset. */ |
| 1804 | if (sec) |
| 1805 | { |
| 1806 | if (entry->symndx == -1) |
| 1807 | ad += entry->d.h->root.u.def.value; |
| 1808 | else |
| 1809 | ad += sym->st_value; |
| 1810 | ad += sec->output_offset; |
| 1811 | if (sec->output_section |
| 1812 | && elf_section_data (sec->output_section)) |
| 1813 | idx = elf_section_data (sec->output_section)->dynindx; |
| 1814 | else |
| 1815 | idx = 0; |
| 1816 | } |
| 1817 | } |
| 1818 | |
| 1819 | /* *ABS*+addend is special for TLS relocations, use only the |
| 1820 | addend. */ |
| 1821 | if (info->executable |
| 1822 | && idx == 0 |
| 1823 | && (bfd_is_abs_section (sec) |
| 1824 | || bfd_is_und_section (sec))) |
| 1825 | ; |
| 1826 | /* If we're linking an executable, we can entirely omit the |
| 1827 | dynamic relocation if the symbol is local to this module. */ |
| 1828 | else if (info->executable |
| 1829 | && (entry->symndx != -1 |
| 1830 | || FRVFDPIC_SYM_LOCAL (info, entry->d.h))) |
| 1831 | { |
| 1832 | if (sec) |
| 1833 | ad += sec->output_section->vma - tls_biased_base (info); |
| 1834 | } |
| 1835 | else |
| 1836 | { |
| 1837 | if (idx == 0 |
| 1838 | && (bfd_is_abs_section (sec) |
| 1839 | || bfd_is_und_section (sec))) |
| 1840 | { |
| 1841 | if (! elf_hash_table (info)->tls_sec) |
| 1842 | { |
| 1843 | (*info->callbacks->undefined_symbol) |
| 1844 | (info, "TLS section", elf_hash_table (info)->dynobj, |
| 1845 | frvfdpic_got_section (info), entry->tlsoff_entry, TRUE); |
| 1846 | return FALSE; |
| 1847 | } |
| 1848 | idx = elf_section_data (elf_hash_table (info)->tls_sec)->dynindx; |
| 1849 | ad += FRVFDPIC_TLS_BIAS; |
| 1850 | } |
| 1851 | _frvfdpic_add_dyn_reloc (output_bfd, frvfdpic_gotrel_section (info), |
| 1852 | _bfd_elf_section_offset |
| 1853 | (output_bfd, info, |
| 1854 | frvfdpic_got_section (info), |
| 1855 | frvfdpic_got_initial_offset (info) |
| 1856 | + entry->tlsoff_entry) |
| 1857 | + frvfdpic_got_section (info) |
| 1858 | ->output_section->vma |
| 1859 | + frvfdpic_got_section (info) |
| 1860 | ->output_offset, |
| 1861 | R_FRV_TLSOFF, idx, ad, entry); |
| 1862 | } |
| 1863 | |
| 1864 | bfd_put_32 (output_bfd, ad, |
| 1865 | frvfdpic_got_section (info)->contents |
| 1866 | + frvfdpic_got_initial_offset (info) |
| 1867 | + entry->tlsoff_entry); |
| 1868 | } |
| 1869 | |
| 1870 | if (entry->tlsdesc_entry) |
| 1871 | { |
| 1872 | int idx = dynindx; |
| 1873 | bfd_vma ad = addend; |
| 1874 | |
| 1875 | /* If the symbol is dynamic but binds locally, use |
| 1876 | section+offset. */ |
| 1877 | if (sec && (entry->symndx != -1 |
| 1878 | || FRVFDPIC_SYM_LOCAL (info, entry->d.h))) |
| 1879 | { |
| 1880 | if (entry->symndx == -1) |
| 1881 | ad += entry->d.h->root.u.def.value; |
| 1882 | else |
| 1883 | ad += sym->st_value; |
| 1884 | ad += sec->output_offset; |
| 1885 | if (sec->output_section && elf_section_data (sec->output_section)) |
| 1886 | idx = elf_section_data (sec->output_section)->dynindx; |
| 1887 | else |
| 1888 | idx = 0; |
| 1889 | } |
| 1890 | |
| 1891 | /* If we didn't set up a TLS offset entry, but we're linking an |
| 1892 | executable and the symbol binds locally, we can use the |
| 1893 | module offset in the TLS descriptor in relaxations. */ |
| 1894 | if (info->executable && ! entry->tlsoff_entry) |
| 1895 | entry->tlsoff_entry = entry->tlsdesc_entry + 4; |
| 1896 | |
| 1897 | if (info->executable && !info->pie |
| 1898 | && ((idx == 0 |
| 1899 | && (bfd_is_abs_section (sec) |
| 1900 | || bfd_is_und_section (sec))) |
| 1901 | || entry->symndx != -1 |
| 1902 | || FRVFDPIC_SYM_LOCAL (info, entry->d.h))) |
| 1903 | { |
| 1904 | /* *ABS*+addend is special for TLS relocations, use only the |
| 1905 | addend for the TLS offset, and take the module id as |
| 1906 | 0. */ |
| 1907 | if (idx == 0 |
| 1908 | && (bfd_is_abs_section (sec) |
| 1909 | || bfd_is_und_section (sec))) |
| 1910 | ; |
| 1911 | /* For other TLS symbols that bind locally, add the section |
| 1912 | TLS offset to the addend. */ |
| 1913 | else if (sec) |
| 1914 | ad += sec->output_section->vma - tls_biased_base (info); |
| 1915 | |
| 1916 | bfd_put_32 (output_bfd, |
| 1917 | frvfdpic_plt_section (info)->output_section->vma |
| 1918 | + frvfdpic_plt_section (info)->output_offset |
| 1919 | + frvfdpic_plt_tls_ret_offset (info), |
| 1920 | frvfdpic_got_section (info)->contents |
| 1921 | + frvfdpic_got_initial_offset (info) |
| 1922 | + entry->tlsdesc_entry); |
| 1923 | |
| 1924 | _frvfdpic_add_rofixup (output_bfd, |
| 1925 | frvfdpic_gotfixup_section (info), |
| 1926 | frvfdpic_got_section (info) |
| 1927 | ->output_section->vma |
| 1928 | + frvfdpic_got_section (info) |
| 1929 | ->output_offset |
| 1930 | + frvfdpic_got_initial_offset (info) |
| 1931 | + entry->tlsdesc_entry, entry); |
| 1932 | |
| 1933 | BFD_ASSERT (frvfdpic_dynamic_got_plt_info (info)->tls_ret_refs); |
| 1934 | |
| 1935 | /* We've used one of the reserved fixups, so discount it so |
| 1936 | that we can check at the end that we've used them |
| 1937 | all. */ |
| 1938 | frvfdpic_dynamic_got_plt_info (info)->tls_ret_refs--; |
| 1939 | |
| 1940 | /* While at that, make sure the ret instruction makes to the |
| 1941 | right location in the PLT. We could do it only when we |
| 1942 | got to 0, but since the check at the end will only print |
| 1943 | a warning, make sure we have the ret in place in case the |
| 1944 | warning is missed. */ |
| 1945 | bfd_put_32 (output_bfd, 0xc03a4000, |
| 1946 | frvfdpic_plt_section (info)->contents |
| 1947 | + frvfdpic_plt_tls_ret_offset (info)); |
| 1948 | } |
| 1949 | else |
| 1950 | { |
| 1951 | if (idx == 0 |
| 1952 | && (bfd_is_abs_section (sec) |
| 1953 | || bfd_is_und_section (sec))) |
| 1954 | { |
| 1955 | if (! elf_hash_table (info)->tls_sec) |
| 1956 | { |
| 1957 | (*info->callbacks->undefined_symbol) |
| 1958 | (info, "TLS section", elf_hash_table (info)->dynobj, |
| 1959 | frvfdpic_got_section (info), entry->tlsdesc_entry, TRUE); |
| 1960 | return FALSE; |
| 1961 | } |
| 1962 | idx = elf_section_data (elf_hash_table (info)->tls_sec)->dynindx; |
| 1963 | ad += FRVFDPIC_TLS_BIAS; |
| 1964 | } |
| 1965 | |
| 1966 | _frvfdpic_add_dyn_reloc (output_bfd, frvfdpic_gotrel_section (info), |
| 1967 | _bfd_elf_section_offset |
| 1968 | (output_bfd, info, |
| 1969 | frvfdpic_got_section (info), |
| 1970 | frvfdpic_got_initial_offset (info) |
| 1971 | + entry->tlsdesc_entry) |
| 1972 | + frvfdpic_got_section (info) |
| 1973 | ->output_section->vma |
| 1974 | + frvfdpic_got_section (info) |
| 1975 | ->output_offset, |
| 1976 | R_FRV_TLSDESC_VALUE, idx, ad, entry); |
| 1977 | |
| 1978 | bfd_put_32 (output_bfd, 0, |
| 1979 | frvfdpic_got_section (info)->contents |
| 1980 | + frvfdpic_got_initial_offset (info) |
| 1981 | + entry->tlsdesc_entry); |
| 1982 | } |
| 1983 | |
| 1984 | bfd_put_32 (output_bfd, ad, |
| 1985 | frvfdpic_got_section (info)->contents |
| 1986 | + frvfdpic_got_initial_offset (info) |
| 1987 | + entry->tlsdesc_entry + 4); |
| 1988 | } |
| 1989 | |
| 1990 | /* Generate code for the get-TLS-offset PLT entry. */ |
| 1991 | if (entry->tlsplt_entry != (bfd_vma) -1) |
| 1992 | { |
| 1993 | bfd_byte *plt_code = frvfdpic_plt_section (info)->contents |
| 1994 | + entry->tlsplt_entry; |
| 1995 | |
| 1996 | if (info->executable |
| 1997 | && (entry->symndx != -1 |
| 1998 | || FRVFDPIC_SYM_LOCAL (info, entry->d.h))) |
| 1999 | { |
| 2000 | int idx = dynindx; |
| 2001 | bfd_vma ad = addend; |
| 2002 | |
| 2003 | /* sec may be NULL when referencing an undefweak symbol |
| 2004 | while linking a static executable. */ |
| 2005 | if (!sec) |
| 2006 | { |
| 2007 | BFD_ASSERT (entry->symndx == -1 |
| 2008 | && entry->d.h->root.type == bfd_link_hash_undefweak); |
| 2009 | } |
| 2010 | else |
| 2011 | { |
| 2012 | if (entry->symndx == -1) |
| 2013 | ad += entry->d.h->root.u.def.value; |
| 2014 | else |
| 2015 | ad += sym->st_value; |
| 2016 | ad += sec->output_offset; |
| 2017 | if (sec->output_section |
| 2018 | && elf_section_data (sec->output_section)) |
| 2019 | idx = elf_section_data (sec->output_section)->dynindx; |
| 2020 | else |
| 2021 | idx = 0; |
| 2022 | } |
| 2023 | |
| 2024 | /* *ABS*+addend is special for TLS relocations, use only the |
| 2025 | addend for the TLS offset, and take the module id as |
| 2026 | 0. */ |
| 2027 | if (idx == 0 |
| 2028 | && (bfd_is_abs_section (sec) |
| 2029 | || bfd_is_und_section (sec))) |
| 2030 | ; |
| 2031 | /* For other TLS symbols that bind locally, add the section |
| 2032 | TLS offset to the addend. */ |
| 2033 | else if (sec) |
| 2034 | ad += sec->output_section->vma - tls_biased_base (info); |
| 2035 | |
| 2036 | if ((bfd_signed_vma)ad >= -(1 << (16 - 1)) |
| 2037 | && (bfd_signed_vma)ad < (1 << (16 - 1))) |
| 2038 | { |
| 2039 | /* setlos lo(ad), gr9 */ |
| 2040 | bfd_put_32 (output_bfd, |
| 2041 | 0x92fc0000 |
| 2042 | | (ad |
| 2043 | & (((bfd_vma)1 << 16) - 1)), |
| 2044 | plt_code); |
| 2045 | plt_code += 4; |
| 2046 | } |
| 2047 | else |
| 2048 | { |
| 2049 | /* sethi.p hi(ad), gr9 |
| 2050 | setlo lo(ad), gr9 */ |
| 2051 | bfd_put_32 (output_bfd, |
| 2052 | 0x12f80000 |
| 2053 | | ((ad >> 16) |
| 2054 | & (((bfd_vma)1 << 16) - 1)), |
| 2055 | plt_code); |
| 2056 | plt_code += 4; |
| 2057 | bfd_put_32 (output_bfd, |
| 2058 | 0x92f40000 |
| 2059 | | (ad |
| 2060 | & (((bfd_vma)1 << 16) - 1)), |
| 2061 | plt_code); |
| 2062 | plt_code += 4; |
| 2063 | } |
| 2064 | /* ret */ |
| 2065 | bfd_put_32 (output_bfd, 0xc03a4000, plt_code); |
| 2066 | } |
| 2067 | else if (entry->tlsoff_entry) |
| 2068 | { |
| 2069 | /* Figure out what kind of PLT entry we need, depending on the |
| 2070 | location of the TLS descriptor within the GOT. */ |
| 2071 | if (entry->tlsoff_entry >= -(1 << (12 - 1)) |
| 2072 | && entry->tlsoff_entry < (1 << (12 - 1))) |
| 2073 | { |
| 2074 | /* ldi @(gr15, tlsoff_entry), gr9 */ |
| 2075 | bfd_put_32 (output_bfd, |
| 2076 | 0x92c8f000 | (entry->tlsoff_entry |
| 2077 | & ((1 << 12) - 1)), |
| 2078 | plt_code); |
| 2079 | plt_code += 4; |
| 2080 | } |
| 2081 | else |
| 2082 | { |
| 2083 | if (entry->tlsoff_entry >= -(1 << (16 - 1)) |
| 2084 | && entry->tlsoff_entry < (1 << (16 - 1))) |
| 2085 | { |
| 2086 | /* setlos lo(tlsoff_entry), gr8 */ |
| 2087 | bfd_put_32 (output_bfd, |
| 2088 | 0x90fc0000 |
| 2089 | | (entry->tlsoff_entry |
| 2090 | & (((bfd_vma)1 << 16) - 1)), |
| 2091 | plt_code); |
| 2092 | plt_code += 4; |
| 2093 | } |
| 2094 | else |
| 2095 | { |
| 2096 | /* sethi.p hi(tlsoff_entry), gr8 |
| 2097 | setlo lo(tlsoff_entry), gr8 */ |
| 2098 | bfd_put_32 (output_bfd, |
| 2099 | 0x10f80000 |
| 2100 | | ((entry->tlsoff_entry >> 16) |
| 2101 | & (((bfd_vma)1 << 16) - 1)), |
| 2102 | plt_code); |
| 2103 | plt_code += 4; |
| 2104 | bfd_put_32 (output_bfd, |
| 2105 | 0x90f40000 |
| 2106 | | (entry->tlsoff_entry |
| 2107 | & (((bfd_vma)1 << 16) - 1)), |
| 2108 | plt_code); |
| 2109 | plt_code += 4; |
| 2110 | } |
| 2111 | /* ld @(gr15,gr8),gr9 */ |
| 2112 | bfd_put_32 (output_bfd, 0x9008f108, plt_code); |
| 2113 | plt_code += 4; |
| 2114 | } |
| 2115 | /* ret */ |
| 2116 | bfd_put_32 (output_bfd, 0xc03a4000, plt_code); |
| 2117 | } |
| 2118 | else |
| 2119 | { |
| 2120 | BFD_ASSERT (entry->tlsdesc_entry); |
| 2121 | |
| 2122 | /* Figure out what kind of PLT entry we need, depending on the |
| 2123 | location of the TLS descriptor within the GOT. */ |
| 2124 | if (entry->tlsdesc_entry >= -(1 << (12 - 1)) |
| 2125 | && entry->tlsdesc_entry < (1 << (12 - 1))) |
| 2126 | { |
| 2127 | /* lddi @(gr15, tlsdesc_entry), gr8 */ |
| 2128 | bfd_put_32 (output_bfd, |
| 2129 | 0x90ccf000 | (entry->tlsdesc_entry |
| 2130 | & ((1 << 12) - 1)), |
| 2131 | plt_code); |
| 2132 | plt_code += 4; |
| 2133 | } |
| 2134 | else |
| 2135 | { |
| 2136 | if (entry->tlsdesc_entry >= -(1 << (16 - 1)) |
| 2137 | && entry->tlsdesc_entry < (1 << (16 - 1))) |
| 2138 | { |
| 2139 | /* setlos lo(tlsdesc_entry), gr8 */ |
| 2140 | bfd_put_32 (output_bfd, |
| 2141 | 0x90fc0000 |
| 2142 | | (entry->tlsdesc_entry |
| 2143 | & (((bfd_vma)1 << 16) - 1)), |
| 2144 | plt_code); |
| 2145 | plt_code += 4; |
| 2146 | } |
| 2147 | else |
| 2148 | { |
| 2149 | /* sethi.p hi(tlsdesc_entry), gr8 |
| 2150 | setlo lo(tlsdesc_entry), gr8 */ |
| 2151 | bfd_put_32 (output_bfd, |
| 2152 | 0x10f80000 |
| 2153 | | ((entry->tlsdesc_entry >> 16) |
| 2154 | & (((bfd_vma)1 << 16) - 1)), |
| 2155 | plt_code); |
| 2156 | plt_code += 4; |
| 2157 | bfd_put_32 (output_bfd, |
| 2158 | 0x90f40000 |
| 2159 | | (entry->tlsdesc_entry |
| 2160 | & (((bfd_vma)1 << 16) - 1)), |
| 2161 | plt_code); |
| 2162 | plt_code += 4; |
| 2163 | } |
| 2164 | /* ldd @(gr15,gr8),gr8 */ |
| 2165 | bfd_put_32 (output_bfd, 0x9008f148, plt_code); |
| 2166 | plt_code += 4; |
| 2167 | } |
| 2168 | /* jmpl @(gr8,gr0) */ |
| 2169 | bfd_put_32 (output_bfd, 0x80308000, plt_code); |
| 2170 | } |
| 2171 | } |
| 2172 | |
| 2173 | return TRUE; |
| 2174 | } |
| 2175 | |
| 2176 | /* Handle an FRV small data reloc. */ |
| 2177 | |
| 2178 | static bfd_reloc_status_type |
| 2179 | elf32_frv_relocate_gprel12 (info, input_bfd, input_section, relocation, |
| 2180 | contents, value) |
| 2181 | struct bfd_link_info *info; |
| 2182 | bfd *input_bfd; |
| 2183 | asection *input_section; |
| 2184 | Elf_Internal_Rela *relocation; |
| 2185 | bfd_byte *contents; |
| 2186 | bfd_vma value; |
| 2187 | { |
| 2188 | bfd_vma insn; |
| 2189 | bfd_vma gp; |
| 2190 | struct bfd_link_hash_entry *h; |
| 2191 | |
| 2192 | h = bfd_link_hash_lookup (info->hash, "_gp", FALSE, FALSE, TRUE); |
| 2193 | |
| 2194 | gp = (h->u.def.value |
| 2195 | + h->u.def.section->output_section->vma |
| 2196 | + h->u.def.section->output_offset); |
| 2197 | |
| 2198 | value -= input_section->output_section->vma; |
| 2199 | value -= (gp - input_section->output_section->vma); |
| 2200 | |
| 2201 | insn = bfd_get_32 (input_bfd, contents + relocation->r_offset); |
| 2202 | |
| 2203 | value += relocation->r_addend; |
| 2204 | |
| 2205 | if ((long) value > 0x7ff || (long) value < -0x800) |
| 2206 | return bfd_reloc_overflow; |
| 2207 | |
| 2208 | bfd_put_32 (input_bfd, |
| 2209 | (insn & 0xfffff000) | (value & 0xfff), |
| 2210 | contents + relocation->r_offset); |
| 2211 | |
| 2212 | return bfd_reloc_ok; |
| 2213 | } |
| 2214 | |
| 2215 | /* Handle an FRV small data reloc. for the u12 field. */ |
| 2216 | |
| 2217 | static bfd_reloc_status_type |
| 2218 | elf32_frv_relocate_gprelu12 (info, input_bfd, input_section, relocation, |
| 2219 | contents, value) |
| 2220 | struct bfd_link_info *info; |
| 2221 | bfd *input_bfd; |
| 2222 | asection *input_section; |
| 2223 | Elf_Internal_Rela *relocation; |
| 2224 | bfd_byte *contents; |
| 2225 | bfd_vma value; |
| 2226 | { |
| 2227 | bfd_vma insn; |
| 2228 | bfd_vma gp; |
| 2229 | struct bfd_link_hash_entry *h; |
| 2230 | bfd_vma mask; |
| 2231 | |
| 2232 | h = bfd_link_hash_lookup (info->hash, "_gp", FALSE, FALSE, TRUE); |
| 2233 | |
| 2234 | gp = (h->u.def.value |
| 2235 | + h->u.def.section->output_section->vma |
| 2236 | + h->u.def.section->output_offset); |
| 2237 | |
| 2238 | value -= input_section->output_section->vma; |
| 2239 | value -= (gp - input_section->output_section->vma); |
| 2240 | |
| 2241 | insn = bfd_get_32 (input_bfd, contents + relocation->r_offset); |
| 2242 | |
| 2243 | value += relocation->r_addend; |
| 2244 | |
| 2245 | if ((long) value > 0x7ff || (long) value < -0x800) |
| 2246 | return bfd_reloc_overflow; |
| 2247 | |
| 2248 | /* The high 6 bits go into bits 17-12. The low 6 bits go into bits 5-0. */ |
| 2249 | mask = 0x3f03f; |
| 2250 | insn = (insn & ~mask) | ((value & 0xfc0) << 12) | (value & 0x3f); |
| 2251 | |
| 2252 | bfd_put_32 (input_bfd, insn, contents + relocation->r_offset); |
| 2253 | |
| 2254 | return bfd_reloc_ok; |
| 2255 | } |
| 2256 | |
| 2257 | /* Handle an FRV ELF HI16 reloc. */ |
| 2258 | |
| 2259 | static bfd_reloc_status_type |
| 2260 | elf32_frv_relocate_hi16 (input_bfd, relhi, contents, value) |
| 2261 | bfd *input_bfd; |
| 2262 | Elf_Internal_Rela *relhi; |
| 2263 | bfd_byte *contents; |
| 2264 | bfd_vma value; |
| 2265 | { |
| 2266 | bfd_vma insn; |
| 2267 | |
| 2268 | insn = bfd_get_32 (input_bfd, contents + relhi->r_offset); |
| 2269 | |
| 2270 | value += relhi->r_addend; |
| 2271 | value = ((value >> 16) & 0xffff); |
| 2272 | |
| 2273 | insn = (insn & 0xffff0000) | value; |
| 2274 | |
| 2275 | if ((long) value > 0xffff || (long) value < -0x10000) |
| 2276 | return bfd_reloc_overflow; |
| 2277 | |
| 2278 | bfd_put_32 (input_bfd, insn, contents + relhi->r_offset); |
| 2279 | return bfd_reloc_ok; |
| 2280 | |
| 2281 | } |
| 2282 | static bfd_reloc_status_type |
| 2283 | elf32_frv_relocate_lo16 (input_bfd, rello, contents, value) |
| 2284 | bfd *input_bfd; |
| 2285 | Elf_Internal_Rela *rello; |
| 2286 | bfd_byte *contents; |
| 2287 | bfd_vma value; |
| 2288 | { |
| 2289 | bfd_vma insn; |
| 2290 | |
| 2291 | insn = bfd_get_32 (input_bfd, contents + rello->r_offset); |
| 2292 | |
| 2293 | value += rello->r_addend; |
| 2294 | value = value & 0xffff; |
| 2295 | |
| 2296 | insn = (insn & 0xffff0000) | value; |
| 2297 | |
| 2298 | if ((long) value > 0xffff || (long) value < -0x10000) |
| 2299 | return bfd_reloc_overflow; |
| 2300 | |
| 2301 | bfd_put_32 (input_bfd, insn, contents + rello->r_offset); |
| 2302 | return bfd_reloc_ok; |
| 2303 | } |
| 2304 | |
| 2305 | /* Perform the relocation for the CALL label24 instruction. */ |
| 2306 | |
| 2307 | static bfd_reloc_status_type |
| 2308 | elf32_frv_relocate_label24 (input_bfd, input_section, rello, contents, value) |
| 2309 | bfd *input_bfd; |
| 2310 | asection *input_section; |
| 2311 | Elf_Internal_Rela *rello; |
| 2312 | bfd_byte *contents; |
| 2313 | bfd_vma value; |
| 2314 | { |
| 2315 | bfd_vma insn; |
| 2316 | bfd_vma label6; |
| 2317 | bfd_vma label18; |
| 2318 | |
| 2319 | /* The format for the call instruction is: |
| 2320 | |
| 2321 | 0 000000 0001111 000000000000000000 |
| 2322 | label6 opcode label18 |
| 2323 | |
| 2324 | The branch calculation is: pc + (4*label24) |
| 2325 | where label24 is the concatenation of label6 and label18. */ |
| 2326 | |
| 2327 | /* Grab the instruction. */ |
| 2328 | insn = bfd_get_32 (input_bfd, contents + rello->r_offset); |
| 2329 | |
| 2330 | value -= input_section->output_section->vma + input_section->output_offset; |
| 2331 | value -= rello->r_offset; |
| 2332 | value += rello->r_addend; |
| 2333 | |
| 2334 | value = value >> 2; |
| 2335 | |
| 2336 | label6 = value & 0xfc0000; |
| 2337 | label6 = label6 << 7; |
| 2338 | |
| 2339 | label18 = value & 0x3ffff; |
| 2340 | |
| 2341 | insn = insn & 0x803c0000; |
| 2342 | insn = insn | label6; |
| 2343 | insn = insn | label18; |
| 2344 | |
| 2345 | bfd_put_32 (input_bfd, insn, contents + rello->r_offset); |
| 2346 | |
| 2347 | return bfd_reloc_ok; |
| 2348 | } |
| 2349 | |
| 2350 | static bfd_reloc_status_type |
| 2351 | elf32_frv_relocate_gprelhi (info, input_bfd, input_section, relocation, |
| 2352 | contents, value) |
| 2353 | struct bfd_link_info *info; |
| 2354 | bfd *input_bfd; |
| 2355 | asection *input_section; |
| 2356 | Elf_Internal_Rela *relocation; |
| 2357 | bfd_byte *contents; |
| 2358 | bfd_vma value; |
| 2359 | { |
| 2360 | bfd_vma insn; |
| 2361 | bfd_vma gp; |
| 2362 | struct bfd_link_hash_entry *h; |
| 2363 | |
| 2364 | h = bfd_link_hash_lookup (info->hash, "_gp", FALSE, FALSE, TRUE); |
| 2365 | |
| 2366 | gp = (h->u.def.value |
| 2367 | + h->u.def.section->output_section->vma |
| 2368 | + h->u.def.section->output_offset); |
| 2369 | |
| 2370 | value -= input_section->output_section->vma; |
| 2371 | value -= (gp - input_section->output_section->vma); |
| 2372 | value += relocation->r_addend; |
| 2373 | value = ((value >> 16) & 0xffff); |
| 2374 | |
| 2375 | if ((long) value > 0xffff || (long) value < -0x10000) |
| 2376 | return bfd_reloc_overflow; |
| 2377 | |
| 2378 | insn = bfd_get_32 (input_bfd, contents + relocation->r_offset); |
| 2379 | insn = (insn & 0xffff0000) | value; |
| 2380 | |
| 2381 | bfd_put_32 (input_bfd, insn, contents + relocation->r_offset); |
| 2382 | return bfd_reloc_ok; |
| 2383 | } |
| 2384 | |
| 2385 | static bfd_reloc_status_type |
| 2386 | elf32_frv_relocate_gprello (info, input_bfd, input_section, relocation, |
| 2387 | contents, value) |
| 2388 | struct bfd_link_info *info; |
| 2389 | bfd *input_bfd; |
| 2390 | asection *input_section; |
| 2391 | Elf_Internal_Rela *relocation; |
| 2392 | bfd_byte *contents; |
| 2393 | bfd_vma value; |
| 2394 | { |
| 2395 | bfd_vma insn; |
| 2396 | bfd_vma gp; |
| 2397 | struct bfd_link_hash_entry *h; |
| 2398 | |
| 2399 | h = bfd_link_hash_lookup (info->hash, "_gp", FALSE, FALSE, TRUE); |
| 2400 | |
| 2401 | gp = (h->u.def.value |
| 2402 | + h->u.def.section->output_section->vma |
| 2403 | + h->u.def.section->output_offset); |
| 2404 | |
| 2405 | value -= input_section->output_section->vma; |
| 2406 | value -= (gp - input_section->output_section->vma); |
| 2407 | value += relocation->r_addend; |
| 2408 | value = value & 0xffff; |
| 2409 | |
| 2410 | if ((long) value > 0xffff || (long) value < -0x10000) |
| 2411 | return bfd_reloc_overflow; |
| 2412 | |
| 2413 | insn = bfd_get_32 (input_bfd, contents + relocation->r_offset); |
| 2414 | insn = (insn & 0xffff0000) | value; |
| 2415 | |
| 2416 | bfd_put_32 (input_bfd, insn, contents + relocation->r_offset); |
| 2417 | |
| 2418 | return bfd_reloc_ok; |
| 2419 | } |
| 2420 | |
| 2421 | static reloc_howto_type * |
| 2422 | frv_reloc_type_lookup (abfd, code) |
| 2423 | bfd *abfd ATTRIBUTE_UNUSED; |
| 2424 | bfd_reloc_code_real_type code; |
| 2425 | { |
| 2426 | switch (code) |
| 2427 | { |
| 2428 | default: |
| 2429 | break; |
| 2430 | |
| 2431 | case BFD_RELOC_NONE: |
| 2432 | return &elf32_frv_howto_table[ (int) R_FRV_NONE]; |
| 2433 | |
| 2434 | case BFD_RELOC_32: |
| 2435 | if (elf_elfheader (abfd)->e_type == ET_EXEC |
| 2436 | || elf_elfheader (abfd)->e_type == ET_DYN) |
| 2437 | return &elf32_frv_rel_32_howto; |
| 2438 | /* Fall through. */ |
| 2439 | case BFD_RELOC_CTOR: |
| 2440 | return &elf32_frv_howto_table[ (int) R_FRV_32]; |
| 2441 | |
| 2442 | case BFD_RELOC_FRV_LABEL16: |
| 2443 | return &elf32_frv_howto_table[ (int) R_FRV_LABEL16]; |
| 2444 | |
| 2445 | case BFD_RELOC_FRV_LABEL24: |
| 2446 | return &elf32_frv_howto_table[ (int) R_FRV_LABEL24]; |
| 2447 | |
| 2448 | case BFD_RELOC_FRV_LO16: |
| 2449 | return &elf32_frv_howto_table[ (int) R_FRV_LO16]; |
| 2450 | |
| 2451 | case BFD_RELOC_FRV_HI16: |
| 2452 | return &elf32_frv_howto_table[ (int) R_FRV_HI16]; |
| 2453 | |
| 2454 | case BFD_RELOC_FRV_GPREL12: |
| 2455 | return &elf32_frv_howto_table[ (int) R_FRV_GPREL12]; |
| 2456 | |
| 2457 | case BFD_RELOC_FRV_GPRELU12: |
| 2458 | return &elf32_frv_howto_table[ (int) R_FRV_GPRELU12]; |
| 2459 | |
| 2460 | case BFD_RELOC_FRV_GPREL32: |
| 2461 | return &elf32_frv_howto_table[ (int) R_FRV_GPREL32]; |
| 2462 | |
| 2463 | case BFD_RELOC_FRV_GPRELHI: |
| 2464 | return &elf32_frv_howto_table[ (int) R_FRV_GPRELHI]; |
| 2465 | |
| 2466 | case BFD_RELOC_FRV_GPRELLO: |
| 2467 | return &elf32_frv_howto_table[ (int) R_FRV_GPRELLO]; |
| 2468 | |
| 2469 | case BFD_RELOC_FRV_GOT12: |
| 2470 | return &elf32_frv_howto_table[ (int) R_FRV_GOT12]; |
| 2471 | |
| 2472 | case BFD_RELOC_FRV_GOTHI: |
| 2473 | return &elf32_frv_howto_table[ (int) R_FRV_GOTHI]; |
| 2474 | |
| 2475 | case BFD_RELOC_FRV_GOTLO: |
| 2476 | return &elf32_frv_howto_table[ (int) R_FRV_GOTLO]; |
| 2477 | |
| 2478 | case BFD_RELOC_FRV_FUNCDESC: |
| 2479 | if (elf_elfheader (abfd)->e_type == ET_EXEC |
| 2480 | || elf_elfheader (abfd)->e_type == ET_DYN) |
| 2481 | return &elf32_frv_rel_funcdesc_howto; |
| 2482 | return &elf32_frv_howto_table[ (int) R_FRV_FUNCDESC]; |
| 2483 | |
| 2484 | case BFD_RELOC_FRV_FUNCDESC_GOT12: |
| 2485 | return &elf32_frv_howto_table[ (int) R_FRV_FUNCDESC_GOT12]; |
| 2486 | |
| 2487 | case BFD_RELOC_FRV_FUNCDESC_GOTHI: |
| 2488 | return &elf32_frv_howto_table[ (int) R_FRV_FUNCDESC_GOTHI]; |
| 2489 | |
| 2490 | case BFD_RELOC_FRV_FUNCDESC_GOTLO: |
| 2491 | return &elf32_frv_howto_table[ (int) R_FRV_FUNCDESC_GOTLO]; |
| 2492 | |
| 2493 | case BFD_RELOC_FRV_FUNCDESC_VALUE: |
| 2494 | if (elf_elfheader (abfd)->e_type == ET_EXEC |
| 2495 | || elf_elfheader (abfd)->e_type == ET_DYN) |
| 2496 | return &elf32_frv_rel_funcdesc_value_howto; |
| 2497 | return &elf32_frv_howto_table[ (int) R_FRV_FUNCDESC_VALUE]; |
| 2498 | |
| 2499 | case BFD_RELOC_FRV_FUNCDESC_GOTOFF12: |
| 2500 | return &elf32_frv_howto_table[ (int) R_FRV_FUNCDESC_GOTOFF12]; |
| 2501 | |
| 2502 | case BFD_RELOC_FRV_FUNCDESC_GOTOFFHI: |
| 2503 | return &elf32_frv_howto_table[ (int) R_FRV_FUNCDESC_GOTOFFHI]; |
| 2504 | |
| 2505 | case BFD_RELOC_FRV_FUNCDESC_GOTOFFLO: |
| 2506 | return &elf32_frv_howto_table[ (int) R_FRV_FUNCDESC_GOTOFFLO]; |
| 2507 | |
| 2508 | case BFD_RELOC_FRV_GOTOFF12: |
| 2509 | return &elf32_frv_howto_table[ (int) R_FRV_GOTOFF12]; |
| 2510 | |
| 2511 | case BFD_RELOC_FRV_GOTOFFHI: |
| 2512 | return &elf32_frv_howto_table[ (int) R_FRV_GOTOFFHI]; |
| 2513 | |
| 2514 | case BFD_RELOC_FRV_GOTOFFLO: |
| 2515 | return &elf32_frv_howto_table[ (int) R_FRV_GOTOFFLO]; |
| 2516 | |
| 2517 | case BFD_RELOC_FRV_GETTLSOFF: |
| 2518 | return &elf32_frv_howto_table[ (int) R_FRV_GETTLSOFF]; |
| 2519 | |
| 2520 | case BFD_RELOC_FRV_TLSDESC_VALUE: |
| 2521 | if (elf_elfheader (abfd)->e_type == ET_EXEC |
| 2522 | || elf_elfheader (abfd)->e_type == ET_DYN) |
| 2523 | return &elf32_frv_rel_tlsdesc_value_howto; |
| 2524 | return &elf32_frv_howto_table[ (int) R_FRV_TLSDESC_VALUE]; |
| 2525 | |
| 2526 | case BFD_RELOC_FRV_GOTTLSDESC12: |
| 2527 | return &elf32_frv_howto_table[ (int) R_FRV_GOTTLSDESC12]; |
| 2528 | |
| 2529 | case BFD_RELOC_FRV_GOTTLSDESCHI: |
| 2530 | return &elf32_frv_howto_table[ (int) R_FRV_GOTTLSDESCHI]; |
| 2531 | |
| 2532 | case BFD_RELOC_FRV_GOTTLSDESCLO: |
| 2533 | return &elf32_frv_howto_table[ (int) R_FRV_GOTTLSDESCLO]; |
| 2534 | |
| 2535 | case BFD_RELOC_FRV_TLSMOFF12: |
| 2536 | return &elf32_frv_howto_table[ (int) R_FRV_TLSMOFF12]; |
| 2537 | |
| 2538 | case BFD_RELOC_FRV_TLSMOFFHI: |
| 2539 | return &elf32_frv_howto_table[ (int) R_FRV_TLSMOFFHI]; |
| 2540 | |
| 2541 | case BFD_RELOC_FRV_TLSMOFFLO: |
| 2542 | return &elf32_frv_howto_table[ (int) R_FRV_TLSMOFFLO]; |
| 2543 | |
| 2544 | case BFD_RELOC_FRV_GOTTLSOFF12: |
| 2545 | return &elf32_frv_howto_table[ (int) R_FRV_GOTTLSOFF12]; |
| 2546 | |
| 2547 | case BFD_RELOC_FRV_GOTTLSOFFHI: |
| 2548 | return &elf32_frv_howto_table[ (int) R_FRV_GOTTLSOFFHI]; |
| 2549 | |
| 2550 | case BFD_RELOC_FRV_GOTTLSOFFLO: |
| 2551 | return &elf32_frv_howto_table[ (int) R_FRV_GOTTLSOFFLO]; |
| 2552 | |
| 2553 | case BFD_RELOC_FRV_TLSOFF: |
| 2554 | if (elf_elfheader (abfd)->e_type == ET_EXEC |
| 2555 | || elf_elfheader (abfd)->e_type == ET_DYN) |
| 2556 | return &elf32_frv_rel_tlsoff_howto; |
| 2557 | return &elf32_frv_howto_table[ (int) R_FRV_TLSOFF]; |
| 2558 | |
| 2559 | case BFD_RELOC_FRV_TLSDESC_RELAX: |
| 2560 | return &elf32_frv_howto_table[ (int) R_FRV_TLSDESC_RELAX]; |
| 2561 | |
| 2562 | case BFD_RELOC_FRV_GETTLSOFF_RELAX: |
| 2563 | return &elf32_frv_howto_table[ (int) R_FRV_GETTLSOFF_RELAX]; |
| 2564 | |
| 2565 | case BFD_RELOC_FRV_TLSOFF_RELAX: |
| 2566 | return &elf32_frv_howto_table[ (int) R_FRV_TLSOFF_RELAX]; |
| 2567 | |
| 2568 | case BFD_RELOC_FRV_TLSMOFF: |
| 2569 | return &elf32_frv_howto_table[ (int) R_FRV_TLSMOFF]; |
| 2570 | |
| 2571 | case BFD_RELOC_VTABLE_INHERIT: |
| 2572 | return &elf32_frv_vtinherit_howto; |
| 2573 | |
| 2574 | case BFD_RELOC_VTABLE_ENTRY: |
| 2575 | return &elf32_frv_vtentry_howto; |
| 2576 | } |
| 2577 | |
| 2578 | return NULL; |
| 2579 | } |
| 2580 | |
| 2581 | static reloc_howto_type * |
| 2582 | frv_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED, const char *r_name) |
| 2583 | { |
| 2584 | unsigned int i; |
| 2585 | |
| 2586 | for (i = 0; |
| 2587 | i < sizeof (elf32_frv_howto_table) / sizeof (elf32_frv_howto_table[0]); |
| 2588 | i++) |
| 2589 | if (elf32_frv_howto_table[i].name != NULL |
| 2590 | && strcasecmp (elf32_frv_howto_table[i].name, r_name) == 0) |
| 2591 | return &elf32_frv_howto_table[i]; |
| 2592 | |
| 2593 | if (strcasecmp (elf32_frv_vtinherit_howto.name, r_name) == 0) |
| 2594 | return &elf32_frv_vtinherit_howto; |
| 2595 | if (strcasecmp (elf32_frv_vtentry_howto.name, r_name) == 0) |
| 2596 | return &elf32_frv_vtentry_howto; |
| 2597 | |
| 2598 | return NULL; |
| 2599 | } |
| 2600 | |
| 2601 | /* Set the howto pointer for an FRV ELF reloc. */ |
| 2602 | |
| 2603 | static void |
| 2604 | frv_info_to_howto_rela (abfd, cache_ptr, dst) |
| 2605 | bfd *abfd ATTRIBUTE_UNUSED; |
| 2606 | arelent *cache_ptr; |
| 2607 | Elf_Internal_Rela *dst; |
| 2608 | { |
| 2609 | unsigned int r_type; |
| 2610 | |
| 2611 | r_type = ELF32_R_TYPE (dst->r_info); |
| 2612 | switch (r_type) |
| 2613 | { |
| 2614 | case R_FRV_GNU_VTINHERIT: |
| 2615 | cache_ptr->howto = &elf32_frv_vtinherit_howto; |
| 2616 | break; |
| 2617 | |
| 2618 | case R_FRV_GNU_VTENTRY: |
| 2619 | cache_ptr->howto = &elf32_frv_vtentry_howto; |
| 2620 | break; |
| 2621 | |
| 2622 | default: |
| 2623 | cache_ptr->howto = & elf32_frv_howto_table [r_type]; |
| 2624 | break; |
| 2625 | } |
| 2626 | } |
| 2627 | |
| 2628 | /* Set the howto pointer for an FRV ELF REL reloc. */ |
| 2629 | static void |
| 2630 | frvfdpic_info_to_howto_rel (bfd *abfd ATTRIBUTE_UNUSED, |
| 2631 | arelent *cache_ptr, Elf_Internal_Rela *dst) |
| 2632 | { |
| 2633 | unsigned int r_type; |
| 2634 | |
| 2635 | r_type = ELF32_R_TYPE (dst->r_info); |
| 2636 | switch (r_type) |
| 2637 | { |
| 2638 | case R_FRV_32: |
| 2639 | cache_ptr->howto = &elf32_frv_rel_32_howto; |
| 2640 | break; |
| 2641 | |
| 2642 | case R_FRV_FUNCDESC: |
| 2643 | cache_ptr->howto = &elf32_frv_rel_funcdesc_howto; |
| 2644 | break; |
| 2645 | |
| 2646 | case R_FRV_FUNCDESC_VALUE: |
| 2647 | cache_ptr->howto = &elf32_frv_rel_funcdesc_value_howto; |
| 2648 | break; |
| 2649 | |
| 2650 | case R_FRV_TLSDESC_VALUE: |
| 2651 | cache_ptr->howto = &elf32_frv_rel_tlsdesc_value_howto; |
| 2652 | break; |
| 2653 | |
| 2654 | case R_FRV_TLSOFF: |
| 2655 | cache_ptr->howto = &elf32_frv_rel_tlsoff_howto; |
| 2656 | break; |
| 2657 | |
| 2658 | default: |
| 2659 | cache_ptr->howto = NULL; |
| 2660 | break; |
| 2661 | } |
| 2662 | } |
| 2663 | \f |
| 2664 | /* Perform a single relocation. By default we use the standard BFD |
| 2665 | routines, but a few relocs, we have to do them ourselves. */ |
| 2666 | |
| 2667 | static bfd_reloc_status_type |
| 2668 | frv_final_link_relocate (howto, input_bfd, input_section, contents, rel, |
| 2669 | relocation) |
| 2670 | reloc_howto_type *howto; |
| 2671 | bfd *input_bfd; |
| 2672 | asection *input_section; |
| 2673 | bfd_byte *contents; |
| 2674 | Elf_Internal_Rela *rel; |
| 2675 | bfd_vma relocation; |
| 2676 | { |
| 2677 | return _bfd_final_link_relocate (howto, input_bfd, input_section, |
| 2678 | contents, rel->r_offset, relocation, |
| 2679 | rel->r_addend); |
| 2680 | } |
| 2681 | |
| 2682 | \f |
| 2683 | /* Relocate an FRV ELF section. |
| 2684 | |
| 2685 | The RELOCATE_SECTION function is called by the new ELF backend linker |
| 2686 | to handle the relocations for a section. |
| 2687 | |
| 2688 | The relocs are always passed as Rela structures; if the section |
| 2689 | actually uses Rel structures, the r_addend field will always be |
| 2690 | zero. |
| 2691 | |
| 2692 | This function is responsible for adjusting the section contents as |
| 2693 | necessary, and (if using Rela relocs and generating a relocatable |
| 2694 | output file) adjusting the reloc addend as necessary. |
| 2695 | |
| 2696 | This function does not have to worry about setting the reloc |
| 2697 | address or the reloc symbol index. |
| 2698 | |
| 2699 | LOCAL_SYMS is a pointer to the swapped in local symbols. |
| 2700 | |
| 2701 | LOCAL_SECTIONS is an array giving the section in the input file |
| 2702 | corresponding to the st_shndx field of each local symbol. |
| 2703 | |
| 2704 | The global hash table entry for the global symbols can be found |
| 2705 | via elf_sym_hashes (input_bfd). |
| 2706 | |
| 2707 | When generating relocatable output, this function must handle |
| 2708 | STB_LOCAL/STT_SECTION symbols specially. The output symbol is |
| 2709 | going to be the section symbol corresponding to the output |
| 2710 | section, which means that the addend must be adjusted |
| 2711 | accordingly. */ |
| 2712 | |
| 2713 | static bfd_boolean |
| 2714 | elf32_frv_relocate_section (output_bfd, info, input_bfd, input_section, |
| 2715 | contents, relocs, local_syms, local_sections) |
| 2716 | bfd *output_bfd ATTRIBUTE_UNUSED; |
| 2717 | struct bfd_link_info *info; |
| 2718 | bfd *input_bfd; |
| 2719 | asection *input_section; |
| 2720 | bfd_byte *contents; |
| 2721 | Elf_Internal_Rela *relocs; |
| 2722 | Elf_Internal_Sym *local_syms; |
| 2723 | asection **local_sections; |
| 2724 | { |
| 2725 | Elf_Internal_Shdr *symtab_hdr; |
| 2726 | struct elf_link_hash_entry **sym_hashes; |
| 2727 | Elf_Internal_Rela *rel; |
| 2728 | Elf_Internal_Rela *relend; |
| 2729 | unsigned isec_segment, got_segment, plt_segment, gprel_segment, tls_segment, |
| 2730 | check_segment[2]; |
| 2731 | int silence_segment_error = !(info->shared || info->pie); |
| 2732 | unsigned long insn; |
| 2733 | |
| 2734 | symtab_hdr = & elf_tdata (input_bfd)->symtab_hdr; |
| 2735 | sym_hashes = elf_sym_hashes (input_bfd); |
| 2736 | relend = relocs + input_section->reloc_count; |
| 2737 | |
| 2738 | isec_segment = _frvfdpic_osec_to_segment (output_bfd, |
| 2739 | input_section->output_section); |
| 2740 | if (IS_FDPIC (output_bfd) && frvfdpic_got_section (info)) |
| 2741 | got_segment = _frvfdpic_osec_to_segment (output_bfd, |
| 2742 | frvfdpic_got_section (info) |
| 2743 | ->output_section); |
| 2744 | else |
| 2745 | got_segment = -1; |
| 2746 | if (IS_FDPIC (output_bfd) && frvfdpic_gotfixup_section (info)) |
| 2747 | gprel_segment = _frvfdpic_osec_to_segment (output_bfd, |
| 2748 | frvfdpic_gotfixup_section (info) |
| 2749 | ->output_section); |
| 2750 | else |
| 2751 | gprel_segment = -1; |
| 2752 | if (IS_FDPIC (output_bfd) && frvfdpic_plt_section (info)) |
| 2753 | plt_segment = _frvfdpic_osec_to_segment (output_bfd, |
| 2754 | frvfdpic_plt_section (info) |
| 2755 | ->output_section); |
| 2756 | else |
| 2757 | plt_segment = -1; |
| 2758 | if (elf_hash_table (info)->tls_sec) |
| 2759 | tls_segment = _frvfdpic_osec_to_segment (output_bfd, |
| 2760 | elf_hash_table (info)->tls_sec); |
| 2761 | else |
| 2762 | tls_segment = -1; |
| 2763 | |
| 2764 | for (rel = relocs; rel < relend; rel ++) |
| 2765 | { |
| 2766 | reloc_howto_type *howto; |
| 2767 | unsigned long r_symndx; |
| 2768 | Elf_Internal_Sym *sym; |
| 2769 | asection *sec; |
| 2770 | struct elf_link_hash_entry *h; |
| 2771 | bfd_vma relocation; |
| 2772 | bfd_reloc_status_type r; |
| 2773 | const char * name = NULL; |
| 2774 | int r_type; |
| 2775 | asection *osec; |
| 2776 | struct frvfdpic_relocs_info *picrel; |
| 2777 | bfd_vma orig_addend = rel->r_addend; |
| 2778 | |
| 2779 | r_type = ELF32_R_TYPE (rel->r_info); |
| 2780 | |
| 2781 | if ( r_type == R_FRV_GNU_VTINHERIT |
| 2782 | || r_type == R_FRV_GNU_VTENTRY) |
| 2783 | continue; |
| 2784 | |
| 2785 | r_symndx = ELF32_R_SYM (rel->r_info); |
| 2786 | howto = elf32_frv_howto_table + ELF32_R_TYPE (rel->r_info); |
| 2787 | h = NULL; |
| 2788 | sym = NULL; |
| 2789 | sec = NULL; |
| 2790 | |
| 2791 | if (r_symndx < symtab_hdr->sh_info) |
| 2792 | { |
| 2793 | sym = local_syms + r_symndx; |
| 2794 | osec = sec = local_sections [r_symndx]; |
| 2795 | relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel); |
| 2796 | |
| 2797 | name = bfd_elf_string_from_elf_section |
| 2798 | (input_bfd, symtab_hdr->sh_link, sym->st_name); |
| 2799 | name = (name == NULL) ? bfd_section_name (input_bfd, sec) : name; |
| 2800 | } |
| 2801 | else |
| 2802 | { |
| 2803 | bfd_boolean warned; |
| 2804 | bfd_boolean unresolved_reloc; |
| 2805 | |
| 2806 | RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel, |
| 2807 | r_symndx, symtab_hdr, sym_hashes, |
| 2808 | h, sec, relocation, |
| 2809 | unresolved_reloc, warned); |
| 2810 | osec = sec; |
| 2811 | } |
| 2812 | |
| 2813 | if (sec != NULL && elf_discarded_section (sec)) |
| 2814 | { |
| 2815 | /* For relocs against symbols from removed linkonce sections, |
| 2816 | or sections discarded by a linker script, we just want the |
| 2817 | section contents zeroed. Avoid any special processing. */ |
| 2818 | _bfd_clear_contents (howto, input_bfd, contents + rel->r_offset); |
| 2819 | rel->r_info = 0; |
| 2820 | rel->r_addend = 0; |
| 2821 | continue; |
| 2822 | } |
| 2823 | |
| 2824 | if (info->relocatable) |
| 2825 | continue; |
| 2826 | |
| 2827 | if (r_type != R_FRV_TLSMOFF |
| 2828 | && h != NULL |
| 2829 | && (h->root.type == bfd_link_hash_defined |
| 2830 | || h->root.type == bfd_link_hash_defweak) |
| 2831 | && !FRVFDPIC_SYM_LOCAL (info, h)) |
| 2832 | { |
| 2833 | osec = sec = NULL; |
| 2834 | relocation = 0; |
| 2835 | } |
| 2836 | |
| 2837 | switch (r_type) |
| 2838 | { |
| 2839 | case R_FRV_LABEL24: |
| 2840 | case R_FRV_32: |
| 2841 | if (! IS_FDPIC (output_bfd)) |
| 2842 | goto non_fdpic; |
| 2843 | |
| 2844 | case R_FRV_GOT12: |
| 2845 | case R_FRV_GOTHI: |
| 2846 | case R_FRV_GOTLO: |
| 2847 | case R_FRV_FUNCDESC_GOT12: |
| 2848 | case R_FRV_FUNCDESC_GOTHI: |
| 2849 | case R_FRV_FUNCDESC_GOTLO: |
| 2850 | case R_FRV_GOTOFF12: |
| 2851 | case R_FRV_GOTOFFHI: |
| 2852 | case R_FRV_GOTOFFLO: |
| 2853 | case R_FRV_FUNCDESC_GOTOFF12: |
| 2854 | case R_FRV_FUNCDESC_GOTOFFHI: |
| 2855 | case R_FRV_FUNCDESC_GOTOFFLO: |
| 2856 | case R_FRV_FUNCDESC: |
| 2857 | case R_FRV_FUNCDESC_VALUE: |
| 2858 | case R_FRV_GETTLSOFF: |
| 2859 | case R_FRV_TLSDESC_VALUE: |
| 2860 | case R_FRV_GOTTLSDESC12: |
| 2861 | case R_FRV_GOTTLSDESCHI: |
| 2862 | case R_FRV_GOTTLSDESCLO: |
| 2863 | case R_FRV_TLSMOFF12: |
| 2864 | case R_FRV_TLSMOFFHI: |
| 2865 | case R_FRV_TLSMOFFLO: |
| 2866 | case R_FRV_GOTTLSOFF12: |
| 2867 | case R_FRV_GOTTLSOFFHI: |
| 2868 | case R_FRV_GOTTLSOFFLO: |
| 2869 | case R_FRV_TLSOFF: |
| 2870 | case R_FRV_TLSDESC_RELAX: |
| 2871 | case R_FRV_GETTLSOFF_RELAX: |
| 2872 | case R_FRV_TLSOFF_RELAX: |
| 2873 | case R_FRV_TLSMOFF: |
| 2874 | if (h != NULL) |
| 2875 | picrel = frvfdpic_relocs_info_for_global (frvfdpic_relocs_info |
| 2876 | (info), input_bfd, h, |
| 2877 | orig_addend, INSERT); |
| 2878 | else |
| 2879 | /* In order to find the entry we created before, we must |
| 2880 | use the original addend, not the one that may have been |
| 2881 | modified by _bfd_elf_rela_local_sym(). */ |
| 2882 | picrel = frvfdpic_relocs_info_for_local (frvfdpic_relocs_info |
| 2883 | (info), input_bfd, r_symndx, |
| 2884 | orig_addend, INSERT); |
| 2885 | if (! picrel) |
| 2886 | return FALSE; |
| 2887 | |
| 2888 | if (!_frvfdpic_emit_got_relocs_plt_entries (picrel, output_bfd, info, |
| 2889 | osec, sym, |
| 2890 | rel->r_addend)) |
| 2891 | { |
| 2892 | (*_bfd_error_handler) |
| 2893 | (_("%B(%A+0x%x): relocation to `%s+%x' may have caused the error above"), |
| 2894 | input_bfd, input_section, rel->r_offset, name, rel->r_addend); |
| 2895 | return FALSE; |
| 2896 | } |
| 2897 | |
| 2898 | break; |
| 2899 | |
| 2900 | default: |
| 2901 | non_fdpic: |
| 2902 | picrel = NULL; |
| 2903 | if (h && ! FRVFDPIC_SYM_LOCAL (info, h)) |
| 2904 | { |
| 2905 | info->callbacks->warning |
| 2906 | (info, _("relocation references symbol not defined in the module"), |
| 2907 | name, input_bfd, input_section, rel->r_offset); |
| 2908 | return FALSE; |
| 2909 | } |
| 2910 | break; |
| 2911 | } |
| 2912 | |
| 2913 | switch (r_type) |
| 2914 | { |
| 2915 | case R_FRV_GETTLSOFF: |
| 2916 | case R_FRV_TLSDESC_VALUE: |
| 2917 | case R_FRV_GOTTLSDESC12: |
| 2918 | case R_FRV_GOTTLSDESCHI: |
| 2919 | case R_FRV_GOTTLSDESCLO: |
| 2920 | case R_FRV_TLSMOFF12: |
| 2921 | case R_FRV_TLSMOFFHI: |
| 2922 | case R_FRV_TLSMOFFLO: |
| 2923 | case R_FRV_GOTTLSOFF12: |
| 2924 | case R_FRV_GOTTLSOFFHI: |
| 2925 | case R_FRV_GOTTLSOFFLO: |
| 2926 | case R_FRV_TLSOFF: |
| 2927 | case R_FRV_TLSDESC_RELAX: |
| 2928 | case R_FRV_GETTLSOFF_RELAX: |
| 2929 | case R_FRV_TLSOFF_RELAX: |
| 2930 | case R_FRV_TLSMOFF: |
| 2931 | if (sec && (bfd_is_abs_section (sec) || bfd_is_und_section (sec))) |
| 2932 | relocation += tls_biased_base (info); |
| 2933 | break; |
| 2934 | |
| 2935 | default: |
| 2936 | break; |
| 2937 | } |
| 2938 | |
| 2939 | /* Try to apply TLS relaxations. */ |
| 2940 | if (1) |
| 2941 | switch (r_type) |
| 2942 | { |
| 2943 | |
| 2944 | #define LOCAL_EXEC_P(info, picrel) \ |
| 2945 | ((info)->executable \ |
| 2946 | && (picrel->symndx != -1 || FRVFDPIC_SYM_LOCAL ((info), (picrel)->d.h))) |
| 2947 | #define INITIAL_EXEC_P(info, picrel) \ |
| 2948 | (((info)->executable || (info)->flags & DF_STATIC_TLS) \ |
| 2949 | && (picrel)->tlsoff_entry) |
| 2950 | |
| 2951 | #define IN_RANGE_FOR_OFST12_P(value) \ |
| 2952 | ((bfd_vma)((value) + 2048) < (bfd_vma)4096) |
| 2953 | #define IN_RANGE_FOR_SETLOS_P(value) \ |
| 2954 | ((bfd_vma)((value) + 32768) < (bfd_vma)65536) |
| 2955 | #define TLSMOFF_IN_RANGE_FOR_SETLOS_P(value, info) \ |
| 2956 | (IN_RANGE_FOR_SETLOS_P ((value) - tls_biased_base (info))) |
| 2957 | |
| 2958 | #define RELAX_GETTLSOFF_LOCAL_EXEC_P(info, picrel, value) \ |
| 2959 | (LOCAL_EXEC_P ((info), (picrel)) \ |
| 2960 | && TLSMOFF_IN_RANGE_FOR_SETLOS_P((value), (info))) |
| 2961 | #define RELAX_GETTLSOFF_INITIAL_EXEC_P(info, picrel) \ |
| 2962 | (INITIAL_EXEC_P ((info), (picrel)) \ |
| 2963 | && IN_RANGE_FOR_OFST12_P ((picrel)->tlsoff_entry)) |
| 2964 | |
| 2965 | #define RELAX_TLSDESC_LOCAL_EXEC_P(info, picrel, value) \ |
| 2966 | (LOCAL_EXEC_P ((info), (picrel))) |
| 2967 | #define RELAX_TLSDESC_INITIAL_EXEC_P(info, picrel) \ |
| 2968 | (INITIAL_EXEC_P ((info), (picrel))) |
| 2969 | |
| 2970 | #define RELAX_GOTTLSOFF_LOCAL_EXEC_P(info, picrel, value) \ |
| 2971 | (LOCAL_EXEC_P ((info), (picrel)) \ |
| 2972 | && TLSMOFF_IN_RANGE_FOR_SETLOS_P((value), (info))) |
| 2973 | |
| 2974 | case R_FRV_GETTLSOFF: |
| 2975 | insn = bfd_get_32 (input_bfd, contents + rel->r_offset); |
| 2976 | |
| 2977 | /* Is this a call instruction? */ |
| 2978 | if ((insn & (unsigned long)0x01fc0000) != 0x003c0000) |
| 2979 | { |
| 2980 | r = info->callbacks->warning |
| 2981 | (info, |
| 2982 | _("R_FRV_GETTLSOFF not applied to a call instruction"), |
| 2983 | name, input_bfd, input_section, rel->r_offset); |
| 2984 | return FALSE; |
| 2985 | } |
| 2986 | |
| 2987 | if (RELAX_GETTLSOFF_LOCAL_EXEC_P (info, picrel, |
| 2988 | relocation + rel->r_addend)) |
| 2989 | { |
| 2990 | /* Replace the call instruction (except the packing bit) |
| 2991 | with setlos #tlsmofflo(symbol+offset), gr9. */ |
| 2992 | insn &= (unsigned long)0x80000000; |
| 2993 | insn |= (unsigned long)0x12fc0000; |
| 2994 | bfd_put_32 (input_bfd, insn, contents + rel->r_offset); |
| 2995 | |
| 2996 | r_type = R_FRV_TLSMOFFLO; |
| 2997 | howto = elf32_frv_howto_table + r_type; |
| 2998 | rel->r_info = ELF32_R_INFO (r_symndx, r_type); |
| 2999 | } |
| 3000 | |
| 3001 | else if (RELAX_GETTLSOFF_INITIAL_EXEC_P (info, picrel)) |
| 3002 | { |
| 3003 | /* Replace the call instruction (except the packing bit) |
| 3004 | with ldi @(gr15, #gottlsoff12(symbol+addend)), gr9. */ |
| 3005 | insn &= (unsigned long)0x80000000; |
| 3006 | insn |= (unsigned long)0x12c8f000; |
| 3007 | bfd_put_32 (input_bfd, insn, contents + rel->r_offset); |
| 3008 | |
| 3009 | r_type = R_FRV_GOTTLSOFF12; |
| 3010 | howto = elf32_frv_howto_table + r_type; |
| 3011 | rel->r_info = ELF32_R_INFO (r_symndx, r_type); |
| 3012 | } |
| 3013 | |
| 3014 | break; |
| 3015 | |
| 3016 | case R_FRV_GOTTLSDESC12: |
| 3017 | insn = bfd_get_32 (input_bfd, contents + rel->r_offset); |
| 3018 | |
| 3019 | /* Is this an lddi instruction? */ |
| 3020 | if ((insn & (unsigned long)0x01fc0000) != 0x00cc0000) |
| 3021 | { |
| 3022 | r = info->callbacks->warning |
| 3023 | (info, |
| 3024 | _("R_FRV_GOTTLSDESC12 not applied to an lddi instruction"), |
| 3025 | name, input_bfd, input_section, rel->r_offset); |
| 3026 | return FALSE; |
| 3027 | } |
| 3028 | |
| 3029 | if (RELAX_TLSDESC_LOCAL_EXEC_P (info, picrel, |
| 3030 | relocation + rel->r_addend) |
| 3031 | && TLSMOFF_IN_RANGE_FOR_SETLOS_P (relocation + rel->r_addend, |
| 3032 | info)) |
| 3033 | { |
| 3034 | /* Replace lddi @(grB, #gottlsdesc12(symbol+offset), grC |
| 3035 | with setlos #tlsmofflo(symbol+offset), gr<C+1>. |
| 3036 | Preserve the packing bit. */ |
| 3037 | insn = (insn & (unsigned long)0x80000000) |
| 3038 | | ((insn + (unsigned long)0x02000000) |
| 3039 | & (unsigned long)0x7e000000); |
| 3040 | insn |= (unsigned long)0x00fc0000; |
| 3041 | bfd_put_32 (input_bfd, insn, contents + rel->r_offset); |
| 3042 | |
| 3043 | r_type = R_FRV_TLSMOFFLO; |
| 3044 | howto = elf32_frv_howto_table + r_type; |
| 3045 | rel->r_info = ELF32_R_INFO (r_symndx, r_type); |
| 3046 | } |
| 3047 | |
| 3048 | else if (RELAX_TLSDESC_LOCAL_EXEC_P (info, picrel, |
| 3049 | relocation + rel->r_addend)) |
| 3050 | { |
| 3051 | /* Replace lddi @(grB, #gottlsdesc12(symbol+offset), grC |
| 3052 | with sethi #tlsmoffhi(symbol+offset), gr<C+1>. |
| 3053 | Preserve the packing bit. */ |
| 3054 | insn = (insn & (unsigned long)0x80000000) |
| 3055 | | ((insn + (unsigned long)0x02000000) |
| 3056 | & (unsigned long)0x7e000000); |
| 3057 | insn |= (unsigned long)0x00f80000; |
| 3058 | bfd_put_32 (input_bfd, insn, contents + rel->r_offset); |
| 3059 | |
| 3060 | r_type = R_FRV_TLSMOFFHI; |
| 3061 | howto = elf32_frv_howto_table + r_type; |
| 3062 | rel->r_info = ELF32_R_INFO (r_symndx, r_type); |
| 3063 | } |
| 3064 | |
| 3065 | else if (RELAX_TLSDESC_INITIAL_EXEC_P (info, picrel)) |
| 3066 | { |
| 3067 | /* Replace lddi @(grB, #gottlsdesc12(symbol+offset), grC |
| 3068 | with ldi @(grB, #gottlsoff12(symbol+offset), |
| 3069 | gr<C+1>. Preserve the packing bit. If gottlsoff12 |
| 3070 | overflows, we'll error out, but that's sort-of ok, |
| 3071 | since we'd started with gottlsdesc12, that's actually |
| 3072 | more demanding. Compiling with -fPIE instead of |
| 3073 | -fpie would fix it; linking with --relax should fix |
| 3074 | it as well. */ |
| 3075 | insn = (insn & (unsigned long)0x80cbf000) |
| 3076 | | ((insn + (unsigned long)0x02000000) |
| 3077 | & (unsigned long)0x7e000000); |
| 3078 | bfd_put_32 (input_bfd, insn, contents + rel->r_offset); |
| 3079 | |
| 3080 | r_type = R_FRV_GOTTLSOFF12; |
| 3081 | howto = elf32_frv_howto_table + r_type; |
| 3082 | rel->r_info = ELF32_R_INFO (r_symndx, r_type); |
| 3083 | } |
| 3084 | |
| 3085 | break; |
| 3086 | |
| 3087 | case R_FRV_GOTTLSDESCHI: |
| 3088 | insn = bfd_get_32 (input_bfd, contents + rel->r_offset); |
| 3089 | |
| 3090 | /* Is this a sethi instruction? */ |
| 3091 | if ((insn & (unsigned long)0x01ff0000) != 0x00f80000) |
| 3092 | { |
| 3093 | r = info->callbacks->warning |
| 3094 | (info, |
| 3095 | _("R_FRV_GOTTLSDESCHI not applied to a sethi instruction"), |
| 3096 | name, input_bfd, input_section, rel->r_offset); |
| 3097 | return FALSE; |
| 3098 | } |
| 3099 | |
| 3100 | if (RELAX_TLSDESC_LOCAL_EXEC_P (info, picrel, |
| 3101 | relocation + rel->r_addend) |
| 3102 | || (RELAX_TLSDESC_INITIAL_EXEC_P (info, picrel) |
| 3103 | && IN_RANGE_FOR_SETLOS_P (picrel->tlsoff_entry))) |
| 3104 | { |
| 3105 | /* Replace sethi with a nop. Preserve the packing bit. */ |
| 3106 | insn &= (unsigned long)0x80000000; |
| 3107 | insn |= (unsigned long)0x00880000; |
| 3108 | bfd_put_32 (input_bfd, insn, contents + rel->r_offset); |
| 3109 | |
| 3110 | /* Nothing to relocate. */ |
| 3111 | continue; |
| 3112 | } |
| 3113 | |
| 3114 | else if (RELAX_TLSDESC_INITIAL_EXEC_P (info, picrel)) |
| 3115 | { |
| 3116 | /* Simply decay GOTTLSDESC to GOTTLSOFF. */ |
| 3117 | r_type = R_FRV_GOTTLSOFFHI; |
| 3118 | howto = elf32_frv_howto_table + r_type; |
| 3119 | rel->r_info = ELF32_R_INFO (r_symndx, r_type); |
| 3120 | } |
| 3121 | |
| 3122 | break; |
| 3123 | |
| 3124 | case R_FRV_GOTTLSDESCLO: |
| 3125 | insn = bfd_get_32 (input_bfd, contents + rel->r_offset); |
| 3126 | |
| 3127 | /* Is this a setlo or setlos instruction? */ |
| 3128 | if ((insn & (unsigned long)0x01f70000) != 0x00f40000) |
| 3129 | { |
| 3130 | r = info->callbacks->warning |
| 3131 | (info, |
| 3132 | _("R_FRV_GOTTLSDESCLO" |
| 3133 | " not applied to a setlo or setlos instruction"), |
| 3134 | name, input_bfd, input_section, rel->r_offset); |
| 3135 | return FALSE; |
| 3136 | } |
| 3137 | |
| 3138 | if (RELAX_TLSDESC_LOCAL_EXEC_P (info, picrel, |
| 3139 | relocation + rel->r_addend) |
| 3140 | || (RELAX_TLSDESC_INITIAL_EXEC_P (info, picrel) |
| 3141 | && IN_RANGE_FOR_OFST12_P (picrel->tlsoff_entry))) |
| 3142 | { |
| 3143 | /* Replace setlo/setlos with a nop. Preserve the |
| 3144 | packing bit. */ |
| 3145 | insn &= (unsigned long)0x80000000; |
| 3146 | insn |= (unsigned long)0x00880000; |
| 3147 | bfd_put_32 (input_bfd, insn, contents + rel->r_offset); |
| 3148 | |
| 3149 | /* Nothing to relocate. */ |
| 3150 | continue; |
| 3151 | } |
| 3152 | |
| 3153 | else if (RELAX_TLSDESC_INITIAL_EXEC_P (info, picrel)) |
| 3154 | { |
| 3155 | /* If the corresponding sethi (if it exists) decayed |
| 3156 | to a nop, make sure this becomes (or already is) a |
| 3157 | setlos, not setlo. */ |
| 3158 | if (IN_RANGE_FOR_SETLOS_P (picrel->tlsoff_entry)) |
| 3159 | { |
| 3160 | insn |= (unsigned long)0x00080000; |
| 3161 | bfd_put_32 (input_bfd, insn, contents + rel->r_offset); |
| 3162 | } |
| 3163 | |
| 3164 | /* Simply decay GOTTLSDESC to GOTTLSOFF. */ |
| 3165 | r_type = R_FRV_GOTTLSOFFLO; |
| 3166 | howto = elf32_frv_howto_table + r_type; |
| 3167 | rel->r_info = ELF32_R_INFO (r_symndx, r_type); |
| 3168 | } |
| 3169 | |
| 3170 | break; |
| 3171 | |
| 3172 | case R_FRV_TLSDESC_RELAX: |
| 3173 | insn = bfd_get_32 (input_bfd, contents + rel->r_offset); |
| 3174 | |
| 3175 | /* Is this an ldd instruction? */ |
| 3176 | if ((insn & (unsigned long)0x01fc0fc0) != 0x00080140) |
| 3177 | { |
| 3178 | r = info->callbacks->warning |
| 3179 | (info, |
| 3180 | _("R_FRV_TLSDESC_RELAX not applied to an ldd instruction"), |
| 3181 | name, input_bfd, input_section, rel->r_offset); |
| 3182 | return FALSE; |
| 3183 | } |
| 3184 | |
| 3185 | if (RELAX_TLSDESC_LOCAL_EXEC_P (info, picrel, |
| 3186 | relocation + rel->r_addend) |
| 3187 | && TLSMOFF_IN_RANGE_FOR_SETLOS_P (relocation + rel->r_addend, |
| 3188 | info)) |
| 3189 | { |
| 3190 | /* Replace ldd #tlsdesc(symbol+offset)@(grB, grA), grC |
| 3191 | with setlos #tlsmofflo(symbol+offset), gr<C+1>. |
| 3192 | Preserve the packing bit. */ |
| 3193 | insn = (insn & (unsigned long)0x80000000) |
| 3194 | | ((insn + (unsigned long)0x02000000) |
| 3195 | & (unsigned long)0x7e000000); |
| 3196 | insn |= (unsigned long)0x00fc0000; |
| 3197 | bfd_put_32 (input_bfd, insn, contents + rel->r_offset); |
| 3198 | |
| 3199 | r_type = R_FRV_TLSMOFFLO; |
| 3200 | howto = elf32_frv_howto_table + r_type; |
| 3201 | rel->r_info = ELF32_R_INFO (r_symndx, r_type); |
| 3202 | } |
| 3203 | |
| 3204 | else if (RELAX_TLSDESC_LOCAL_EXEC_P (info, picrel, |
| 3205 | relocation + rel->r_addend)) |
| 3206 | { |
| 3207 | /* Replace ldd #tlsdesc(symbol+offset)@(grB, grA), grC |
| 3208 | with sethi #tlsmoffhi(symbol+offset), gr<C+1>. |
| 3209 | Preserve the packing bit. */ |
| 3210 | insn = (insn & (unsigned long)0x80000000) |
| 3211 | | ((insn + (unsigned long)0x02000000) |
| 3212 | & (unsigned long)0x7e000000); |
| 3213 | insn |= (unsigned long)0x00f80000; |
| 3214 | bfd_put_32 (input_bfd, insn, contents + rel->r_offset); |
| 3215 | |
| 3216 | r_type = R_FRV_TLSMOFFHI; |
| 3217 | howto = elf32_frv_howto_table + r_type; |
| 3218 | rel->r_info = ELF32_R_INFO (r_symndx, r_type); |
| 3219 | } |
| 3220 | |
| 3221 | else if (RELAX_TLSDESC_INITIAL_EXEC_P (info, picrel) |
| 3222 | && IN_RANGE_FOR_OFST12_P (picrel->tlsoff_entry)) |
| 3223 | { |
| 3224 | /* Replace ldd #tlsdesc(symbol+offset)@(grB, grA), grC |
| 3225 | with ldi @(grB, #gottlsoff12(symbol+offset), gr<C+1>. |
| 3226 | Preserve the packing bit. */ |
| 3227 | insn = (insn & (unsigned long)0x8003f000) |
| 3228 | | (unsigned long)0x00c80000 |
| 3229 | | ((insn + (unsigned long)0x02000000) |
| 3230 | & (unsigned long)0x7e000000); |
| 3231 | bfd_put_32 (input_bfd, insn, contents + rel->r_offset); |
| 3232 | |
| 3233 | r_type = R_FRV_GOTTLSOFF12; |
| 3234 | howto = elf32_frv_howto_table + r_type; |
| 3235 | rel->r_info = ELF32_R_INFO (r_symndx, r_type); |
| 3236 | } |
| 3237 | |
| 3238 | else if (RELAX_TLSDESC_INITIAL_EXEC_P (info, picrel)) |
| 3239 | { |
| 3240 | /* Replace ldd #tlsdesc(symbol+offset)@(grB, grA), grC |
| 3241 | with ld #tlsoff(symbol+offset)@(grB, grA), gr<C+1>. |
| 3242 | Preserve the packing bit. */ |
| 3243 | insn = (insn & (unsigned long)0x81ffffbf) |
| 3244 | | ((insn + (unsigned long)0x02000000) |
| 3245 | & (unsigned long)0x7e000000); |
| 3246 | bfd_put_32 (input_bfd, insn, contents + rel->r_offset); |
| 3247 | |
| 3248 | /* #tlsoff(symbol+offset) is just a relaxation |
| 3249 | annotation, so there's nothing left to |
| 3250 | relocate. */ |
| 3251 | continue; |
| 3252 | } |
| 3253 | |
| 3254 | break; |
| 3255 | |
| 3256 | case R_FRV_GETTLSOFF_RELAX: |
| 3257 | insn = bfd_get_32 (input_bfd, contents + rel->r_offset); |
| 3258 | |
| 3259 | /* Is this a calll or callil instruction? */ |
| 3260 | if ((insn & (unsigned long)0x7ff80fc0) != 0x02300000) |
| 3261 | { |
| 3262 | r = info->callbacks->warning |
| 3263 | (info, |
| 3264 | _("R_FRV_GETTLSOFF_RELAX" |
| 3265 | " not applied to a calll instruction"), |
| 3266 | name, input_bfd, input_section, rel->r_offset); |
| 3267 | return FALSE; |
| 3268 | } |
| 3269 | |
| 3270 | if (RELAX_TLSDESC_LOCAL_EXEC_P (info, picrel, |
| 3271 | relocation + rel->r_addend) |
| 3272 | && TLSMOFF_IN_RANGE_FOR_SETLOS_P (relocation + rel->r_addend, |
| 3273 | info)) |
| 3274 | { |
| 3275 | /* Replace calll with a nop. Preserve the packing bit. */ |
| 3276 | insn &= (unsigned long)0x80000000; |
| 3277 | insn |= (unsigned long)0x00880000; |
| 3278 | bfd_put_32 (input_bfd, insn, contents + rel->r_offset); |
| 3279 | |
| 3280 | /* Nothing to relocate. */ |
| 3281 | continue; |
| 3282 | } |
| 3283 | |
| 3284 | else if (RELAX_TLSDESC_LOCAL_EXEC_P (info, picrel, |
| 3285 | relocation + rel->r_addend)) |
| 3286 | { |
| 3287 | /* Replace calll with setlo #tlsmofflo(symbol+offset), gr9. |
| 3288 | Preserve the packing bit. */ |
| 3289 | insn &= (unsigned long)0x80000000; |
| 3290 | insn |= (unsigned long)0x12f40000; |
| 3291 | bfd_put_32 (input_bfd, insn, contents + rel->r_offset); |
| 3292 | |
| 3293 | r_type = R_FRV_TLSMOFFLO; |
| 3294 | howto = elf32_frv_howto_table + r_type; |
| 3295 | rel->r_info = ELF32_R_INFO (r_symndx, r_type); |
| 3296 | } |
| 3297 | |
| 3298 | else if (RELAX_TLSDESC_INITIAL_EXEC_P (info, picrel)) |
| 3299 | { |
| 3300 | /* Replace calll with a nop. Preserve the packing bit. */ |
| 3301 | insn &= (unsigned long)0x80000000; |
| 3302 | insn |= (unsigned long)0x00880000; |
| 3303 | bfd_put_32 (input_bfd, insn, contents + rel->r_offset); |
| 3304 | |
| 3305 | /* Nothing to relocate. */ |
| 3306 | continue; |
| 3307 | } |
| 3308 | |
| 3309 | break; |
| 3310 | |
| 3311 | case R_FRV_GOTTLSOFF12: |
| 3312 | insn = bfd_get_32 (input_bfd, contents + rel->r_offset); |
| 3313 | |
| 3314 | /* Is this an ldi instruction? */ |
| 3315 | if ((insn & (unsigned long)0x01fc0000) != 0x00c80000) |
| 3316 | { |
| 3317 | r = info->callbacks->warning |
| 3318 | (info, |
| 3319 | _("R_FRV_GOTTLSOFF12 not applied to an ldi instruction"), |
| 3320 | name, input_bfd, input_section, rel->r_offset); |
| 3321 | return FALSE; |
| 3322 | } |
| 3323 | |
| 3324 | if (RELAX_GOTTLSOFF_LOCAL_EXEC_P (info, picrel, |
| 3325 | relocation + rel->r_addend)) |
| 3326 | { |
| 3327 | /* Replace ldi @(grB, #gottlsoff12(symbol+offset), grC |
| 3328 | with setlos #tlsmofflo(symbol+offset), grC. |
| 3329 | Preserve the packing bit. */ |
| 3330 | insn &= (unsigned long)0xfe000000; |
| 3331 | insn |= (unsigned long)0x00fc0000; |
| 3332 | bfd_put_32 (input_bfd, insn, contents + rel->r_offset); |
| 3333 | |
| 3334 | r_type = R_FRV_TLSMOFFLO; |
| 3335 | howto = elf32_frv_howto_table + r_type; |
| 3336 | rel->r_info = ELF32_R_INFO (r_symndx, r_type); |
| 3337 | } |
| 3338 | |
| 3339 | break; |
| 3340 | |
| 3341 | case R_FRV_GOTTLSOFFHI: |
| 3342 | insn = bfd_get_32 (input_bfd, contents + rel->r_offset); |
| 3343 | |
| 3344 | /* Is this a sethi instruction? */ |
| 3345 | if ((insn & (unsigned long)0x01ff0000) != 0x00f80000) |
| 3346 | { |
| 3347 | r = info->callbacks->warning |
| 3348 | (info, |
| 3349 | _("R_FRV_GOTTLSOFFHI not applied to a sethi instruction"), |
| 3350 | name, input_bfd, input_section, rel->r_offset); |
| 3351 | return FALSE; |
| 3352 | } |
| 3353 | |
| 3354 | if (RELAX_GOTTLSOFF_LOCAL_EXEC_P (info, picrel, |
| 3355 | relocation + rel->r_addend) |
| 3356 | || (RELAX_TLSDESC_INITIAL_EXEC_P (info, picrel) |
| 3357 | && IN_RANGE_FOR_OFST12_P (picrel->tlsoff_entry))) |
| 3358 | { |
| 3359 | /* Replace sethi with a nop. Preserve the packing bit. */ |
| 3360 | insn &= (unsigned long)0x80000000; |
| 3361 | insn |= (unsigned long)0x00880000; |
| 3362 | bfd_put_32 (input_bfd, insn, contents + rel->r_offset); |
| 3363 | |
| 3364 | /* Nothing to relocate. */ |
| 3365 | continue; |
| 3366 | } |
| 3367 | |
| 3368 | break; |
| 3369 | |
| 3370 | case R_FRV_GOTTLSOFFLO: |
| 3371 | insn = bfd_get_32 (input_bfd, contents + rel->r_offset); |
| 3372 | |
| 3373 | /* Is this a setlo or setlos instruction? */ |
| 3374 | if ((insn & (unsigned long)0x01f70000) != 0x00f40000) |
| 3375 | { |
| 3376 | r = info->callbacks->warning |
| 3377 | (info, |
| 3378 | _("R_FRV_GOTTLSOFFLO" |
| 3379 | " not applied to a setlo or setlos instruction"), |
| 3380 | name, input_bfd, input_section, rel->r_offset); |
| 3381 | return FALSE; |
| 3382 | } |
| 3383 | |
| 3384 | if (RELAX_GOTTLSOFF_LOCAL_EXEC_P (info, picrel, |
| 3385 | relocation + rel->r_addend) |
| 3386 | || (RELAX_TLSDESC_INITIAL_EXEC_P (info, picrel) |
| 3387 | && IN_RANGE_FOR_OFST12_P (picrel->tlsoff_entry))) |
| 3388 | { |
| 3389 | /* Replace setlo/setlos with a nop. Preserve the |
| 3390 | packing bit. */ |
| 3391 | insn &= (unsigned long)0x80000000; |
| 3392 | insn |= (unsigned long)0x00880000; |
| 3393 | bfd_put_32 (input_bfd, insn, contents + rel->r_offset); |
| 3394 | |
| 3395 | /* Nothing to relocate. */ |
| 3396 | continue; |
| 3397 | } |
| 3398 | |
| 3399 | break; |
| 3400 | |
| 3401 | case R_FRV_TLSOFF_RELAX: |
| 3402 | insn = bfd_get_32 (input_bfd, contents + rel->r_offset); |
| 3403 | |
| 3404 | /* Is this an ld instruction? */ |
| 3405 | if ((insn & (unsigned long)0x01fc0fc0) != 0x00080100) |
| 3406 | { |
| 3407 | r = info->callbacks->warning |
| 3408 | (info, |
| 3409 | _("R_FRV_TLSOFF_RELAX not applied to an ld instruction"), |
| 3410 | name, input_bfd, input_section, rel->r_offset); |
| 3411 | return FALSE; |
| 3412 | } |
| 3413 | |
| 3414 | if (RELAX_GOTTLSOFF_LOCAL_EXEC_P (info, picrel, |
| 3415 | relocation + rel->r_addend)) |
| 3416 | { |
| 3417 | /* Replace ld #gottlsoff(symbol+offset)@(grB, grA), grC |
| 3418 | with setlos #tlsmofflo(symbol+offset), grC. |
| 3419 | Preserve the packing bit. */ |
| 3420 | insn &= (unsigned long)0xfe000000; |
| 3421 | insn |= (unsigned long)0x00fc0000; |
| 3422 | bfd_put_32 (input_bfd, insn, contents + rel->r_offset); |
| 3423 | |
| 3424 | r_type = R_FRV_TLSMOFFLO; |
| 3425 | howto = elf32_frv_howto_table + r_type; |
| 3426 | rel->r_info = ELF32_R_INFO (r_symndx, r_type); |
| 3427 | } |
| 3428 | |
| 3429 | else if (RELAX_TLSDESC_INITIAL_EXEC_P (info, picrel) |
| 3430 | && IN_RANGE_FOR_OFST12_P (picrel->tlsoff_entry)) |
| 3431 | { |
| 3432 | /* Replace ld #tlsoff(symbol+offset)@(grB, grA), grC |
| 3433 | with ldi @(grB, #gottlsoff12(symbol+offset), grC. |
| 3434 | Preserve the packing bit. */ |
| 3435 | insn = (insn & (unsigned long)0xfe03f000) |
| 3436 | | (unsigned long)0x00c80000;; |
| 3437 | bfd_put_32 (input_bfd, insn, contents + rel->r_offset); |
| 3438 | |
| 3439 | r_type = R_FRV_GOTTLSOFF12; |
| 3440 | howto = elf32_frv_howto_table + r_type; |
| 3441 | rel->r_info = ELF32_R_INFO (r_symndx, r_type); |
| 3442 | } |
| 3443 | |
| 3444 | break; |
| 3445 | |
| 3446 | case R_FRV_TLSMOFFHI: |
| 3447 | insn = bfd_get_32 (input_bfd, contents + rel->r_offset); |
| 3448 | |
| 3449 | /* Is this a sethi instruction? */ |
| 3450 | if ((insn & (unsigned long)0x01ff0000) != 0x00f80000) |
| 3451 | { |
| 3452 | r = info->callbacks->warning |
| 3453 | (info, |
| 3454 | _("R_FRV_TLSMOFFHI not applied to a sethi instruction"), |
| 3455 | name, input_bfd, input_section, rel->r_offset); |
| 3456 | return FALSE; |
| 3457 | } |
| 3458 | |
| 3459 | if (TLSMOFF_IN_RANGE_FOR_SETLOS_P (relocation + rel->r_addend, |
| 3460 | info)) |
| 3461 | { |
| 3462 | /* Replace sethi with a nop. Preserve the packing bit. */ |
| 3463 | insn &= (unsigned long)0x80000000; |
| 3464 | insn |= (unsigned long)0x00880000; |
| 3465 | bfd_put_32 (input_bfd, insn, contents + rel->r_offset); |
| 3466 | |
| 3467 | /* Nothing to relocate. */ |
| 3468 | continue; |
| 3469 | } |
| 3470 | |
| 3471 | break; |
| 3472 | |
| 3473 | case R_FRV_TLSMOFFLO: |
| 3474 | insn = bfd_get_32 (input_bfd, contents + rel->r_offset); |
| 3475 | |
| 3476 | /* Is this a setlo or setlos instruction? */ |
| 3477 | if ((insn & (unsigned long)0x01f70000) != 0x00f40000) |
| 3478 | { |
| 3479 | r = info->callbacks->warning |
| 3480 | (info, |
| 3481 | _("R_FRV_TLSMOFFLO" |
| 3482 | " not applied to a setlo or setlos instruction"), |
| 3483 | name, input_bfd, input_section, rel->r_offset); |
| 3484 | return FALSE; |
| 3485 | } |
| 3486 | |
| 3487 | if (TLSMOFF_IN_RANGE_FOR_SETLOS_P (relocation + rel->r_addend, |
| 3488 | info)) |
| 3489 | /* If the corresponding sethi (if it exists) decayed |
| 3490 | to a nop, make sure this becomes (or already is) a |
| 3491 | setlos, not setlo. */ |
| 3492 | { |
| 3493 | insn |= (unsigned long)0x00080000; |
| 3494 | bfd_put_32 (input_bfd, insn, contents + rel->r_offset); |
| 3495 | } |
| 3496 | |
| 3497 | break; |
| 3498 | |
| 3499 | /* |
| 3500 | There's nothing to relax in these: |
| 3501 | R_FRV_TLSDESC_VALUE |
| 3502 | R_FRV_TLSOFF |
| 3503 | R_FRV_TLSMOFF12 |
| 3504 | R_FRV_TLSMOFFHI |
| 3505 | R_FRV_TLSMOFFLO |
| 3506 | R_FRV_TLSMOFF |
| 3507 | */ |
| 3508 | |
| 3509 | default: |
| 3510 | break; |
| 3511 | } |
| 3512 | |
| 3513 | switch (r_type) |
| 3514 | { |
| 3515 | case R_FRV_LABEL24: |
| 3516 | check_segment[0] = isec_segment; |
| 3517 | if (! IS_FDPIC (output_bfd)) |
| 3518 | check_segment[1] = isec_segment; |
| 3519 | else if (picrel->plt) |
| 3520 | { |
| 3521 | relocation = frvfdpic_plt_section (info)->output_section->vma |
| 3522 | + frvfdpic_plt_section (info)->output_offset |
| 3523 | + picrel->plt_entry; |
| 3524 | check_segment[1] = plt_segment; |
| 3525 | } |
| 3526 | /* We don't want to warn on calls to undefined weak symbols, |
| 3527 | as calls to them must be protected by non-NULL tests |
| 3528 | anyway, and unprotected calls would invoke undefined |
| 3529 | behavior. */ |
| 3530 | else if (picrel->symndx == -1 |
| 3531 | && picrel->d.h->root.type == bfd_link_hash_undefweak) |
| 3532 | check_segment[1] = check_segment[0]; |
| 3533 | else |
| 3534 | check_segment[1] = sec |
| 3535 | ? _frvfdpic_osec_to_segment (output_bfd, sec->output_section) |
| 3536 | : (unsigned)-1; |
| 3537 | break; |
| 3538 | |
| 3539 | case R_FRV_GOT12: |
| 3540 | case R_FRV_GOTHI: |
| 3541 | case R_FRV_GOTLO: |
| 3542 | relocation = picrel->got_entry; |
| 3543 | check_segment[0] = check_segment[1] = got_segment; |
| 3544 | break; |
| 3545 | |
| 3546 | case R_FRV_FUNCDESC_GOT12: |
| 3547 | case R_FRV_FUNCDESC_GOTHI: |
| 3548 | case R_FRV_FUNCDESC_GOTLO: |
| 3549 | relocation = picrel->fdgot_entry; |
| 3550 | check_segment[0] = check_segment[1] = got_segment; |
| 3551 | break; |
| 3552 | |
| 3553 | case R_FRV_GOTOFFHI: |
| 3554 | case R_FRV_GOTOFF12: |
| 3555 | case R_FRV_GOTOFFLO: |
| 3556 | relocation -= frvfdpic_got_section (info)->output_section->vma |
| 3557 | + frvfdpic_got_section (info)->output_offset |
| 3558 | + frvfdpic_got_initial_offset (info); |
| 3559 | check_segment[0] = got_segment; |
| 3560 | check_segment[1] = sec |
| 3561 | ? _frvfdpic_osec_to_segment (output_bfd, sec->output_section) |
| 3562 | : (unsigned)-1; |
| 3563 | break; |
| 3564 | |
| 3565 | case R_FRV_FUNCDESC_GOTOFF12: |
| 3566 | case R_FRV_FUNCDESC_GOTOFFHI: |
| 3567 | case R_FRV_FUNCDESC_GOTOFFLO: |
| 3568 | relocation = picrel->fd_entry; |
| 3569 | check_segment[0] = check_segment[1] = got_segment; |
| 3570 | break; |
| 3571 | |
| 3572 | case R_FRV_FUNCDESC: |
| 3573 | { |
| 3574 | int dynindx; |
| 3575 | bfd_vma addend = rel->r_addend; |
| 3576 | |
| 3577 | if (! (h && h->root.type == bfd_link_hash_undefweak |
| 3578 | && FRVFDPIC_SYM_LOCAL (info, h))) |
| 3579 | { |
| 3580 | /* If the symbol is dynamic and there may be dynamic |
| 3581 | symbol resolution because we are or are linked with a |
| 3582 | shared library, emit a FUNCDESC relocation such that |
| 3583 | the dynamic linker will allocate the function |
| 3584 | descriptor. If the symbol needs a non-local function |
| 3585 | descriptor but binds locally (e.g., its visibility is |
| 3586 | protected, emit a dynamic relocation decayed to |
| 3587 | section+offset. */ |
| 3588 | if (h && ! FRVFDPIC_FUNCDESC_LOCAL (info, h) |
| 3589 | && FRVFDPIC_SYM_LOCAL (info, h) |
| 3590 | && !(info->executable && !info->pie)) |
| 3591 | { |
| 3592 | dynindx = elf_section_data (h->root.u.def.section |
| 3593 | ->output_section)->dynindx; |
| 3594 | addend += h->root.u.def.section->output_offset |
| 3595 | + h->root.u.def.value; |
| 3596 | } |
| 3597 | else if (h && ! FRVFDPIC_FUNCDESC_LOCAL (info, h)) |
| 3598 | { |
| 3599 | if (addend) |
| 3600 | { |
| 3601 | info->callbacks->warning |
| 3602 | (info, _("R_FRV_FUNCDESC references dynamic symbol with nonzero addend"), |
| 3603 | name, input_bfd, input_section, rel->r_offset); |
| 3604 | return FALSE; |
| 3605 | } |
| 3606 | dynindx = h->dynindx; |
| 3607 | } |
| 3608 | else |
| 3609 | { |
| 3610 | /* Otherwise, we know we have a private function |
| 3611 | descriptor, so reference it directly. */ |
| 3612 | BFD_ASSERT (picrel->privfd); |
| 3613 | r_type = R_FRV_32; |
| 3614 | dynindx = elf_section_data (frvfdpic_got_section (info) |
| 3615 | ->output_section)->dynindx; |
| 3616 | addend = frvfdpic_got_section (info)->output_offset |
| 3617 | + frvfdpic_got_initial_offset (info) |
| 3618 | + picrel->fd_entry; |
| 3619 | } |
| 3620 | |
| 3621 | /* If there is room for dynamic symbol resolution, emit |
| 3622 | the dynamic relocation. However, if we're linking an |
| 3623 | executable at a fixed location, we won't have emitted a |
| 3624 | dynamic symbol entry for the got section, so idx will |
| 3625 | be zero, which means we can and should compute the |
| 3626 | address of the private descriptor ourselves. */ |
| 3627 | if (info->executable && !info->pie |
| 3628 | && (!h || FRVFDPIC_FUNCDESC_LOCAL (info, h))) |
| 3629 | { |
| 3630 | addend += frvfdpic_got_section (info)->output_section->vma; |
| 3631 | if ((bfd_get_section_flags (output_bfd, |
| 3632 | input_section->output_section) |
| 3633 | & (SEC_ALLOC | SEC_LOAD)) == (SEC_ALLOC | SEC_LOAD)) |
| 3634 | { |
| 3635 | bfd_vma offset; |
| 3636 | |
| 3637 | if (_frvfdpic_osec_readonly_p (output_bfd, |
| 3638 | input_section |
| 3639 | ->output_section)) |
| 3640 | { |
| 3641 | info->callbacks->warning |
| 3642 | (info, |
| 3643 | _("cannot emit fixups in read-only section"), |
| 3644 | name, input_bfd, input_section, rel->r_offset); |
| 3645 | return FALSE; |
| 3646 | } |
| 3647 | |
| 3648 | offset = _bfd_elf_section_offset |
| 3649 | (output_bfd, info, |
| 3650 | input_section, rel->r_offset); |
| 3651 | |
| 3652 | if (offset != (bfd_vma)-1) |
| 3653 | _frvfdpic_add_rofixup (output_bfd, |
| 3654 | frvfdpic_gotfixup_section |
| 3655 | (info), |
| 3656 | offset + input_section |
| 3657 | ->output_section->vma |
| 3658 | + input_section->output_offset, |
| 3659 | picrel); |
| 3660 | } |
| 3661 | } |
| 3662 | else if ((bfd_get_section_flags (output_bfd, |
| 3663 | input_section->output_section) |
| 3664 | & (SEC_ALLOC | SEC_LOAD)) == (SEC_ALLOC | SEC_LOAD)) |
| 3665 | { |
| 3666 | bfd_vma offset; |
| 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 | |
| 3679 | offset = _bfd_elf_section_offset |
| 3680 | (output_bfd, info, |
| 3681 | input_section, rel->r_offset); |
| 3682 | |
| 3683 | if (offset != (bfd_vma)-1) |
| 3684 | _frvfdpic_add_dyn_reloc (output_bfd, |
| 3685 | frvfdpic_gotrel_section (info), |
| 3686 | offset + input_section |
| 3687 | ->output_section->vma |
| 3688 | + input_section->output_offset, |
| 3689 | r_type, dynindx, addend, picrel); |
| 3690 | } |
| 3691 | else |
| 3692 | addend += frvfdpic_got_section (info)->output_section->vma; |
| 3693 | } |
| 3694 | |
| 3695 | /* We want the addend in-place because dynamic |
| 3696 | relocations are REL. Setting relocation to it should |
| 3697 | arrange for it to be installed. */ |
| 3698 | relocation = addend - rel->r_addend; |
| 3699 | } |
| 3700 | check_segment[0] = check_segment[1] = got_segment; |
| 3701 | break; |
| 3702 | |
| 3703 | case R_FRV_32: |
| 3704 | if (! IS_FDPIC (output_bfd)) |
| 3705 | { |
| 3706 | check_segment[0] = check_segment[1] = -1; |
| 3707 | break; |
| 3708 | } |
| 3709 | /* Fall through. */ |
| 3710 | case R_FRV_FUNCDESC_VALUE: |
| 3711 | { |
| 3712 | int dynindx; |
| 3713 | bfd_vma addend = rel->r_addend; |
| 3714 | |
| 3715 | /* If the symbol is dynamic but binds locally, use |
| 3716 | section+offset. */ |
| 3717 | if (h && ! FRVFDPIC_SYM_LOCAL (info, h)) |
| 3718 | { |
| 3719 | if (addend && r_type == R_FRV_FUNCDESC_VALUE) |
| 3720 | { |
| 3721 | info->callbacks->warning |
| 3722 | (info, _("R_FRV_FUNCDESC_VALUE references dynamic symbol with nonzero addend"), |
| 3723 | name, input_bfd, input_section, rel->r_offset); |
| 3724 | return FALSE; |
| 3725 | } |
| 3726 | dynindx = h->dynindx; |
| 3727 | } |
| 3728 | else |
| 3729 | { |
| 3730 | if (h) |
| 3731 | addend += h->root.u.def.value; |
| 3732 | else |
| 3733 | addend += sym->st_value; |
| 3734 | if (osec) |
| 3735 | addend += osec->output_offset; |
| 3736 | if (osec && osec->output_section |
| 3737 | && ! bfd_is_abs_section (osec->output_section) |
| 3738 | && ! bfd_is_und_section (osec->output_section)) |
| 3739 | dynindx = elf_section_data (osec->output_section)->dynindx; |
| 3740 | else |
| 3741 | dynindx = 0; |
| 3742 | } |
| 3743 | |
| 3744 | /* If we're linking an executable at a fixed address, we |
| 3745 | can omit the dynamic relocation as long as the symbol |
| 3746 | is defined in the current link unit (which is implied |
| 3747 | by its output section not being NULL). */ |
| 3748 | if (info->executable && !info->pie |
| 3749 | && (!h || FRVFDPIC_SYM_LOCAL (info, h))) |
| 3750 | { |
| 3751 | if (osec) |
| 3752 | addend += osec->output_section->vma; |
| 3753 | if (IS_FDPIC (input_bfd) |
| 3754 | && (bfd_get_section_flags (output_bfd, |
| 3755 | input_section->output_section) |
| 3756 | & (SEC_ALLOC | SEC_LOAD)) == (SEC_ALLOC | SEC_LOAD)) |
| 3757 | { |
| 3758 | if (_frvfdpic_osec_readonly_p (output_bfd, |
| 3759 | input_section |
| 3760 | ->output_section)) |
| 3761 | { |
| 3762 | info->callbacks->warning |
| 3763 | (info, |
| 3764 | _("cannot emit fixups in read-only section"), |
| 3765 | name, input_bfd, input_section, rel->r_offset); |
| 3766 | return FALSE; |
| 3767 | } |
| 3768 | if (!h || h->root.type != bfd_link_hash_undefweak) |
| 3769 | { |
| 3770 | bfd_vma offset = _bfd_elf_section_offset |
| 3771 | (output_bfd, info, |
| 3772 | input_section, rel->r_offset); |
| 3773 | |
| 3774 | if (offset != (bfd_vma)-1) |
| 3775 | { |
| 3776 | _frvfdpic_add_rofixup (output_bfd, |
| 3777 | frvfdpic_gotfixup_section |
| 3778 | (info), |
| 3779 | offset + input_section |
| 3780 | ->output_section->vma |
| 3781 | + input_section->output_offset, |
| 3782 | picrel); |
| 3783 | if (r_type == R_FRV_FUNCDESC_VALUE) |
| 3784 | _frvfdpic_add_rofixup |
| 3785 | (output_bfd, |
| 3786 | frvfdpic_gotfixup_section (info), |
| 3787 | offset |
| 3788 | + input_section->output_section->vma |
| 3789 | + input_section->output_offset + 4, picrel); |
| 3790 | } |
| 3791 | } |
| 3792 | } |
| 3793 | } |
| 3794 | else |
| 3795 | { |
| 3796 | if ((bfd_get_section_flags (output_bfd, |
| 3797 | input_section->output_section) |
| 3798 | & (SEC_ALLOC | SEC_LOAD)) == (SEC_ALLOC | SEC_LOAD)) |
| 3799 | { |
| 3800 | bfd_vma offset; |
| 3801 | |
| 3802 | if (_frvfdpic_osec_readonly_p (output_bfd, |
| 3803 | input_section |
| 3804 | ->output_section)) |
| 3805 | { |
| 3806 | info->callbacks->warning |
| 3807 | (info, |
| 3808 | _("cannot emit dynamic relocations in read-only section"), |
| 3809 | name, input_bfd, input_section, rel->r_offset); |
| 3810 | return FALSE; |
| 3811 | } |
| 3812 | |
| 3813 | offset = _bfd_elf_section_offset |
| 3814 | (output_bfd, info, |
| 3815 | input_section, rel->r_offset); |
| 3816 | |
| 3817 | if (offset != (bfd_vma)-1) |
| 3818 | _frvfdpic_add_dyn_reloc (output_bfd, |
| 3819 | frvfdpic_gotrel_section (info), |
| 3820 | offset + input_section |
| 3821 | ->output_section->vma |
| 3822 | + input_section->output_offset, |
| 3823 | r_type, dynindx, addend, picrel); |
| 3824 | } |
| 3825 | else if (osec) |
| 3826 | addend += osec->output_section->vma; |
| 3827 | /* We want the addend in-place because dynamic |
| 3828 | relocations are REL. Setting relocation to it |
| 3829 | should arrange for it to be installed. */ |
| 3830 | relocation = addend - rel->r_addend; |
| 3831 | } |
| 3832 | |
| 3833 | if (r_type == R_FRV_FUNCDESC_VALUE) |
| 3834 | { |
| 3835 | /* If we've omitted the dynamic relocation, just emit |
| 3836 | the fixed addresses of the symbol and of the local |
| 3837 | GOT base offset. */ |
| 3838 | if (info->executable && !info->pie |
| 3839 | && (!h || FRVFDPIC_SYM_LOCAL (info, h))) |
| 3840 | bfd_put_32 (output_bfd, |
| 3841 | frvfdpic_got_section (info)->output_section->vma |
| 3842 | + frvfdpic_got_section (info)->output_offset |
| 3843 | + frvfdpic_got_initial_offset (info), |
| 3844 | contents + rel->r_offset + 4); |
| 3845 | else |
| 3846 | /* A function descriptor used for lazy or local |
| 3847 | resolving is initialized such that its high word |
| 3848 | contains the output section index in which the |
| 3849 | PLT entries are located, and the low word |
| 3850 | contains the offset of the lazy PLT entry entry |
| 3851 | point into that section. */ |
| 3852 | bfd_put_32 (output_bfd, |
| 3853 | h && ! FRVFDPIC_SYM_LOCAL (info, h) |
| 3854 | ? 0 |
| 3855 | : _frvfdpic_osec_to_segment (output_bfd, |
| 3856 | sec |
| 3857 | ->output_section), |
| 3858 | contents + rel->r_offset + 4); |
| 3859 | } |
| 3860 | } |
| 3861 | check_segment[0] = check_segment[1] = got_segment; |
| 3862 | break; |
| 3863 | |
| 3864 | case R_FRV_GPREL12: |
| 3865 | case R_FRV_GPRELU12: |
| 3866 | case R_FRV_GPREL32: |
| 3867 | case R_FRV_GPRELHI: |
| 3868 | case R_FRV_GPRELLO: |
| 3869 | check_segment[0] = gprel_segment; |
| 3870 | check_segment[1] = sec |
| 3871 | ? _frvfdpic_osec_to_segment (output_bfd, sec->output_section) |
| 3872 | : (unsigned)-1; |
| 3873 | break; |
| 3874 | |
| 3875 | case R_FRV_GETTLSOFF: |
| 3876 | relocation = frvfdpic_plt_section (info)->output_section->vma |
| 3877 | + frvfdpic_plt_section (info)->output_offset |
| 3878 | + picrel->tlsplt_entry; |
| 3879 | BFD_ASSERT (picrel->tlsplt_entry != (bfd_vma)-1 |
| 3880 | && picrel->tlsdesc_entry); |
| 3881 | check_segment[0] = isec_segment; |
| 3882 | check_segment[1] = plt_segment; |
| 3883 | break; |
| 3884 | |
| 3885 | case R_FRV_GOTTLSDESC12: |
| 3886 | case R_FRV_GOTTLSDESCHI: |
| 3887 | case R_FRV_GOTTLSDESCLO: |
| 3888 | BFD_ASSERT (picrel->tlsdesc_entry); |
| 3889 | relocation = picrel->tlsdesc_entry; |
| 3890 | check_segment[0] = tls_segment; |
| 3891 | check_segment[1] = sec |
| 3892 | && ! bfd_is_abs_section (sec) |
| 3893 | && ! bfd_is_und_section (sec) |
| 3894 | ? _frvfdpic_osec_to_segment (output_bfd, sec->output_section) |
| 3895 | : tls_segment; |
| 3896 | break; |
| 3897 | |
| 3898 | case R_FRV_TLSMOFF12: |
| 3899 | case R_FRV_TLSMOFFHI: |
| 3900 | case R_FRV_TLSMOFFLO: |
| 3901 | case R_FRV_TLSMOFF: |
| 3902 | check_segment[0] = tls_segment; |
| 3903 | if (! sec) |
| 3904 | check_segment[1] = -1; |
| 3905 | else if (bfd_is_abs_section (sec) |
| 3906 | || bfd_is_und_section (sec)) |
| 3907 | { |
| 3908 | relocation = 0; |
| 3909 | check_segment[1] = tls_segment; |
| 3910 | } |
| 3911 | else if (sec->output_section) |
| 3912 | { |
| 3913 | relocation -= tls_biased_base (info); |
| 3914 | check_segment[1] = |
| 3915 | _frvfdpic_osec_to_segment (output_bfd, sec->output_section); |
| 3916 | } |
| 3917 | else |
| 3918 | check_segment[1] = -1; |
| 3919 | break; |
| 3920 | |
| 3921 | case R_FRV_GOTTLSOFF12: |
| 3922 | case R_FRV_GOTTLSOFFHI: |
| 3923 | case R_FRV_GOTTLSOFFLO: |
| 3924 | BFD_ASSERT (picrel->tlsoff_entry); |
| 3925 | relocation = picrel->tlsoff_entry; |
| 3926 | check_segment[0] = tls_segment; |
| 3927 | check_segment[1] = sec |
| 3928 | && ! bfd_is_abs_section (sec) |
| 3929 | && ! bfd_is_und_section (sec) |
| 3930 | ? _frvfdpic_osec_to_segment (output_bfd, sec->output_section) |
| 3931 | : tls_segment; |
| 3932 | break; |
| 3933 | |
| 3934 | case R_FRV_TLSDESC_VALUE: |
| 3935 | case R_FRV_TLSOFF: |
| 3936 | /* These shouldn't be present in input object files. */ |
| 3937 | check_segment[0] = check_segment[1] = isec_segment; |
| 3938 | break; |
| 3939 | |
| 3940 | case R_FRV_TLSDESC_RELAX: |
| 3941 | case R_FRV_GETTLSOFF_RELAX: |
| 3942 | case R_FRV_TLSOFF_RELAX: |
| 3943 | /* These are just annotations for relaxation, nothing to do |
| 3944 | here. */ |
| 3945 | continue; |
| 3946 | |
| 3947 | default: |
| 3948 | check_segment[0] = isec_segment; |
| 3949 | check_segment[1] = sec |
| 3950 | ? _frvfdpic_osec_to_segment (output_bfd, sec->output_section) |
| 3951 | : (unsigned)-1; |
| 3952 | break; |
| 3953 | } |
| 3954 | |
| 3955 | if (check_segment[0] != check_segment[1] && IS_FDPIC (output_bfd)) |
| 3956 | { |
| 3957 | /* If you take this out, remove the #error from fdpic-static-6.d |
| 3958 | in the ld testsuite. */ |
| 3959 | /* This helps catch problems in GCC while we can't do more |
| 3960 | than static linking. The idea is to test whether the |
| 3961 | input file basename is crt0.o only once. */ |
| 3962 | if (silence_segment_error == 1) |
| 3963 | silence_segment_error = |
| 3964 | (strlen (input_bfd->filename) == 6 |
| 3965 | && strcmp (input_bfd->filename, "crt0.o") == 0) |
| 3966 | || (strlen (input_bfd->filename) > 6 |
| 3967 | && strcmp (input_bfd->filename |
| 3968 | + strlen (input_bfd->filename) - 7, |
| 3969 | "/crt0.o") == 0) |
| 3970 | ? -1 : 0; |
| 3971 | if (!silence_segment_error |
| 3972 | /* We don't want duplicate errors for undefined |
| 3973 | symbols. */ |
| 3974 | && !(picrel && picrel->symndx == -1 |
| 3975 | && picrel->d.h->root.type == bfd_link_hash_undefined)) |
| 3976 | { |
| 3977 | if (info->shared || info->pie) |
| 3978 | (*_bfd_error_handler) |
| 3979 | (_("%B(%A+0x%lx): reloc against `%s': %s"), |
| 3980 | input_bfd, input_section, (long)rel->r_offset, name, |
| 3981 | _("relocation references a different segment")); |
| 3982 | else |
| 3983 | info->callbacks->warning |
| 3984 | (info, |
| 3985 | _("relocation references a different segment"), |
| 3986 | name, input_bfd, input_section, rel->r_offset); |
| 3987 | } |
| 3988 | if (!silence_segment_error && (info->shared || info->pie)) |
| 3989 | return FALSE; |
| 3990 | elf_elfheader (output_bfd)->e_flags |= EF_FRV_PIC; |
| 3991 | } |
| 3992 | |
| 3993 | switch (r_type) |
| 3994 | { |
| 3995 | case R_FRV_GOTOFFHI: |
| 3996 | case R_FRV_TLSMOFFHI: |
| 3997 | /* We need the addend to be applied before we shift the |
| 3998 | value right. */ |
| 3999 | relocation += rel->r_addend; |
| 4000 | /* Fall through. */ |
| 4001 | case R_FRV_GOTHI: |
| 4002 | case R_FRV_FUNCDESC_GOTHI: |
| 4003 | case R_FRV_FUNCDESC_GOTOFFHI: |
| 4004 | case R_FRV_GOTTLSOFFHI: |
| 4005 | case R_FRV_GOTTLSDESCHI: |
| 4006 | relocation >>= 16; |
| 4007 | /* Fall through. */ |
| 4008 | |
| 4009 | case R_FRV_GOTLO: |
| 4010 | case R_FRV_FUNCDESC_GOTLO: |
| 4011 | case R_FRV_GOTOFFLO: |
| 4012 | case R_FRV_FUNCDESC_GOTOFFLO: |
| 4013 | case R_FRV_GOTTLSOFFLO: |
| 4014 | case R_FRV_GOTTLSDESCLO: |
| 4015 | case R_FRV_TLSMOFFLO: |
| 4016 | relocation &= 0xffff; |
| 4017 | break; |
| 4018 | |
| 4019 | default: |
| 4020 | break; |
| 4021 | } |
| 4022 | |
| 4023 | switch (r_type) |
| 4024 | { |
| 4025 | case R_FRV_LABEL24: |
| 4026 | if (! IS_FDPIC (output_bfd) || ! picrel->plt) |
| 4027 | break; |
| 4028 | /* Fall through. */ |
| 4029 | |
| 4030 | /* When referencing a GOT entry, a function descriptor or a |
| 4031 | PLT, we don't want the addend to apply to the reference, |
| 4032 | but rather to the referenced symbol. The actual entry |
| 4033 | will have already been created taking the addend into |
| 4034 | account, so cancel it out here. */ |
| 4035 | case R_FRV_GOT12: |
| 4036 | case R_FRV_GOTHI: |
| 4037 | case R_FRV_GOTLO: |
| 4038 | case R_FRV_FUNCDESC_GOT12: |
| 4039 | case R_FRV_FUNCDESC_GOTHI: |
| 4040 | case R_FRV_FUNCDESC_GOTLO: |
| 4041 | case R_FRV_FUNCDESC_GOTOFF12: |
| 4042 | case R_FRV_FUNCDESC_GOTOFFHI: |
| 4043 | case R_FRV_FUNCDESC_GOTOFFLO: |
| 4044 | case R_FRV_GETTLSOFF: |
| 4045 | case R_FRV_GOTTLSDESC12: |
| 4046 | case R_FRV_GOTTLSDESCHI: |
| 4047 | case R_FRV_GOTTLSDESCLO: |
| 4048 | case R_FRV_GOTTLSOFF12: |
| 4049 | case R_FRV_GOTTLSOFFHI: |
| 4050 | case R_FRV_GOTTLSOFFLO: |
| 4051 | /* Note that we only want GOTOFFHI, not GOTOFFLO or GOTOFF12 |
| 4052 | here, since we do want to apply the addend to the others. |
| 4053 | Note that we've applied the addend to GOTOFFHI before we |
| 4054 | shifted it right. */ |
| 4055 | case R_FRV_GOTOFFHI: |
| 4056 | case R_FRV_TLSMOFFHI: |
| 4057 | relocation -= rel->r_addend; |
| 4058 | break; |
| 4059 | |
| 4060 | default: |
| 4061 | break; |
| 4062 | } |
| 4063 | |
| 4064 | if (r_type == R_FRV_HI16) |
| 4065 | r = elf32_frv_relocate_hi16 (input_bfd, rel, contents, relocation); |
| 4066 | |
| 4067 | else if (r_type == R_FRV_LO16) |
| 4068 | r = elf32_frv_relocate_lo16 (input_bfd, rel, contents, relocation); |
| 4069 | |
| 4070 | else if (r_type == R_FRV_LABEL24 || r_type == R_FRV_GETTLSOFF) |
| 4071 | r = elf32_frv_relocate_label24 (input_bfd, input_section, rel, |
| 4072 | contents, relocation); |
| 4073 | |
| 4074 | else if (r_type == R_FRV_GPREL12) |
| 4075 | r = elf32_frv_relocate_gprel12 (info, input_bfd, input_section, rel, |
| 4076 | contents, relocation); |
| 4077 | |
| 4078 | else if (r_type == R_FRV_GPRELU12) |
| 4079 | r = elf32_frv_relocate_gprelu12 (info, input_bfd, input_section, rel, |
| 4080 | contents, relocation); |
| 4081 | |
| 4082 | else if (r_type == R_FRV_GPRELLO) |
| 4083 | r = elf32_frv_relocate_gprello (info, input_bfd, input_section, rel, |
| 4084 | contents, relocation); |
| 4085 | |
| 4086 | else if (r_type == R_FRV_GPRELHI) |
| 4087 | r = elf32_frv_relocate_gprelhi (info, input_bfd, input_section, rel, |
| 4088 | contents, relocation); |
| 4089 | |
| 4090 | else if (r_type == R_FRV_TLSOFF |
| 4091 | || r_type == R_FRV_TLSDESC_VALUE) |
| 4092 | r = bfd_reloc_notsupported; |
| 4093 | |
| 4094 | else |
| 4095 | r = frv_final_link_relocate (howto, input_bfd, input_section, contents, |
| 4096 | rel, relocation); |
| 4097 | |
| 4098 | if (r != bfd_reloc_ok) |
| 4099 | { |
| 4100 | const char * msg = (const char *) NULL; |
| 4101 | |
| 4102 | switch (r) |
| 4103 | { |
| 4104 | case bfd_reloc_overflow: |
| 4105 | r = info->callbacks->reloc_overflow |
| 4106 | (info, (h ? &h->root : NULL), name, howto->name, |
| 4107 | (bfd_vma) 0, input_bfd, input_section, rel->r_offset); |
| 4108 | break; |
| 4109 | |
| 4110 | case bfd_reloc_undefined: |
| 4111 | r = info->callbacks->undefined_symbol |
| 4112 | (info, name, input_bfd, input_section, rel->r_offset, TRUE); |
| 4113 | break; |
| 4114 | |
| 4115 | case bfd_reloc_outofrange: |
| 4116 | msg = _("internal error: out of range error"); |
| 4117 | break; |
| 4118 | |
| 4119 | case bfd_reloc_notsupported: |
| 4120 | msg = _("internal error: unsupported relocation error"); |
| 4121 | break; |
| 4122 | |
| 4123 | case bfd_reloc_dangerous: |
| 4124 | msg = _("internal error: dangerous relocation"); |
| 4125 | break; |
| 4126 | |
| 4127 | default: |
| 4128 | msg = _("internal error: unknown error"); |
| 4129 | break; |
| 4130 | } |
| 4131 | |
| 4132 | if (msg) |
| 4133 | { |
| 4134 | (*_bfd_error_handler) |
| 4135 | (_("%B(%A+0x%lx): reloc against `%s': %s"), |
| 4136 | input_bfd, input_section, (long)rel->r_offset, name, msg); |
| 4137 | return FALSE; |
| 4138 | } |
| 4139 | |
| 4140 | if (! r) |
| 4141 | return FALSE; |
| 4142 | } |
| 4143 | } |
| 4144 | |
| 4145 | return TRUE; |
| 4146 | } |
| 4147 | \f |
| 4148 | /* Return the section that should be marked against GC for a given |
| 4149 | relocation. */ |
| 4150 | |
| 4151 | static asection * |
| 4152 | elf32_frv_gc_mark_hook (asection *sec, |
| 4153 | struct bfd_link_info *info, |
| 4154 | Elf_Internal_Rela *rel, |
| 4155 | struct elf_link_hash_entry *h, |
| 4156 | Elf_Internal_Sym *sym) |
| 4157 | { |
| 4158 | if (h != NULL) |
| 4159 | switch (ELF32_R_TYPE (rel->r_info)) |
| 4160 | { |
| 4161 | case R_FRV_GNU_VTINHERIT: |
| 4162 | case R_FRV_GNU_VTENTRY: |
| 4163 | return NULL; |
| 4164 | } |
| 4165 | |
| 4166 | return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym); |
| 4167 | } |
| 4168 | \f |
| 4169 | /* Hook called by the linker routine which adds symbols from an object |
| 4170 | file. We use it to put .comm items in .scomm, and not .comm. */ |
| 4171 | |
| 4172 | static bfd_boolean |
| 4173 | elf32_frv_add_symbol_hook (abfd, info, sym, namep, flagsp, secp, valp) |
| 4174 | bfd *abfd; |
| 4175 | struct bfd_link_info *info; |
| 4176 | Elf_Internal_Sym *sym; |
| 4177 | const char **namep ATTRIBUTE_UNUSED; |
| 4178 | flagword *flagsp ATTRIBUTE_UNUSED; |
| 4179 | asection **secp; |
| 4180 | bfd_vma *valp; |
| 4181 | { |
| 4182 | if (sym->st_shndx == SHN_COMMON |
| 4183 | && !info->relocatable |
| 4184 | && (int)sym->st_size <= (int)bfd_get_gp_size (abfd)) |
| 4185 | { |
| 4186 | /* Common symbols less than or equal to -G nn bytes are |
| 4187 | automatically put into .sbss. */ |
| 4188 | |
| 4189 | asection *scomm = bfd_get_section_by_name (abfd, ".scommon"); |
| 4190 | |
| 4191 | if (scomm == NULL) |
| 4192 | { |
| 4193 | scomm = bfd_make_section_with_flags (abfd, ".scommon", |
| 4194 | (SEC_ALLOC |
| 4195 | | SEC_IS_COMMON |
| 4196 | | SEC_LINKER_CREATED)); |
| 4197 | if (scomm == NULL) |
| 4198 | return FALSE; |
| 4199 | } |
| 4200 | |
| 4201 | *secp = scomm; |
| 4202 | *valp = sym->st_size; |
| 4203 | } |
| 4204 | |
| 4205 | return TRUE; |
| 4206 | } |
| 4207 | |
| 4208 | /* We need dynamic symbols for every section, since segments can |
| 4209 | relocate independently. */ |
| 4210 | static bfd_boolean |
| 4211 | _frvfdpic_link_omit_section_dynsym (bfd *output_bfd ATTRIBUTE_UNUSED, |
| 4212 | struct bfd_link_info *info |
| 4213 | ATTRIBUTE_UNUSED, |
| 4214 | asection *p ATTRIBUTE_UNUSED) |
| 4215 | { |
| 4216 | switch (elf_section_data (p)->this_hdr.sh_type) |
| 4217 | { |
| 4218 | case SHT_PROGBITS: |
| 4219 | case SHT_NOBITS: |
| 4220 | /* If sh_type is yet undecided, assume it could be |
| 4221 | SHT_PROGBITS/SHT_NOBITS. */ |
| 4222 | case SHT_NULL: |
| 4223 | return FALSE; |
| 4224 | |
| 4225 | /* There shouldn't be section relative relocations |
| 4226 | against any other section. */ |
| 4227 | default: |
| 4228 | return TRUE; |
| 4229 | } |
| 4230 | } |
| 4231 | |
| 4232 | /* Create a .got section, as well as its additional info field. This |
| 4233 | is almost entirely copied from |
| 4234 | elflink.c:_bfd_elf_create_got_section(). */ |
| 4235 | |
| 4236 | static bfd_boolean |
| 4237 | _frv_create_got_section (bfd *abfd, struct bfd_link_info *info) |
| 4238 | { |
| 4239 | flagword flags, pltflags; |
| 4240 | asection *s; |
| 4241 | struct elf_link_hash_entry *h; |
| 4242 | struct bfd_link_hash_entry *bh; |
| 4243 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
| 4244 | int ptralign; |
| 4245 | int offset; |
| 4246 | |
| 4247 | /* This function may be called more than once. */ |
| 4248 | s = bfd_get_section_by_name (abfd, ".got"); |
| 4249 | if (s != NULL && (s->flags & SEC_LINKER_CREATED) != 0) |
| 4250 | return TRUE; |
| 4251 | |
| 4252 | /* Machine specific: although pointers are 32-bits wide, we want the |
| 4253 | GOT to be aligned to a 64-bit boundary, such that function |
| 4254 | descriptors in it can be accessed with 64-bit loads and |
| 4255 | stores. */ |
| 4256 | ptralign = 3; |
| 4257 | |
| 4258 | flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY |
| 4259 | | SEC_LINKER_CREATED); |
| 4260 | pltflags = flags; |
| 4261 | |
| 4262 | s = bfd_make_section_with_flags (abfd, ".got", flags); |
| 4263 | if (s == NULL |
| 4264 | || !bfd_set_section_alignment (abfd, s, ptralign)) |
| 4265 | return FALSE; |
| 4266 | |
| 4267 | if (bed->want_got_plt) |
| 4268 | { |
| 4269 | s = bfd_make_section_with_flags (abfd, ".got.plt", flags); |
| 4270 | if (s == NULL |
| 4271 | || !bfd_set_section_alignment (abfd, s, ptralign)) |
| 4272 | return FALSE; |
| 4273 | } |
| 4274 | |
| 4275 | if (bed->want_got_sym) |
| 4276 | { |
| 4277 | /* Define the symbol _GLOBAL_OFFSET_TABLE_ at the start of the .got |
| 4278 | (or .got.plt) section. We don't do this in the linker script |
| 4279 | because we don't want to define the symbol if we are not creating |
| 4280 | a global offset table. */ |
| 4281 | h = _bfd_elf_define_linkage_sym (abfd, info, s, "_GLOBAL_OFFSET_TABLE_"); |
| 4282 | elf_hash_table (info)->hgot = h; |
| 4283 | if (h == NULL) |
| 4284 | return FALSE; |
| 4285 | |
| 4286 | /* Machine-specific: we want the symbol for executables as |
| 4287 | well. */ |
| 4288 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
| 4289 | return FALSE; |
| 4290 | } |
| 4291 | |
| 4292 | /* The first bit of the global offset table is the header. */ |
| 4293 | s->size += bed->got_header_size; |
| 4294 | |
| 4295 | /* This is the machine-specific part. Create and initialize section |
| 4296 | data for the got. */ |
| 4297 | if (IS_FDPIC (abfd)) |
| 4298 | { |
| 4299 | frvfdpic_got_section (info) = s; |
| 4300 | frvfdpic_relocs_info (info) = htab_try_create (1, |
| 4301 | frvfdpic_relocs_info_hash, |
| 4302 | frvfdpic_relocs_info_eq, |
| 4303 | (htab_del) NULL); |
| 4304 | if (! frvfdpic_relocs_info (info)) |
| 4305 | return FALSE; |
| 4306 | |
| 4307 | s = bfd_make_section_with_flags (abfd, ".rel.got", |
| 4308 | (flags | SEC_READONLY)); |
| 4309 | if (s == NULL |
| 4310 | || ! bfd_set_section_alignment (abfd, s, 2)) |
| 4311 | return FALSE; |
| 4312 | |
| 4313 | frvfdpic_gotrel_section (info) = s; |
| 4314 | |
| 4315 | /* Machine-specific. */ |
| 4316 | s = bfd_make_section_with_flags (abfd, ".rofixup", |
| 4317 | (flags | SEC_READONLY)); |
| 4318 | if (s == NULL |
| 4319 | || ! bfd_set_section_alignment (abfd, s, 2)) |
| 4320 | return FALSE; |
| 4321 | |
| 4322 | frvfdpic_gotfixup_section (info) = s; |
| 4323 | offset = -2048; |
| 4324 | flags = BSF_GLOBAL; |
| 4325 | } |
| 4326 | else |
| 4327 | { |
| 4328 | offset = 2048; |
| 4329 | flags = BSF_GLOBAL | BSF_WEAK; |
| 4330 | } |
| 4331 | |
| 4332 | /* Define _gp in .rofixup, for FDPIC, or .got otherwise. If it |
| 4333 | turns out that we're linking with a different linker script, the |
| 4334 | linker script will override it. */ |
| 4335 | bh = NULL; |
| 4336 | if (!(_bfd_generic_link_add_one_symbol |
| 4337 | (info, abfd, "_gp", flags, s, offset, (const char *) NULL, FALSE, |
| 4338 | bed->collect, &bh))) |
| 4339 | return FALSE; |
| 4340 | h = (struct elf_link_hash_entry *) bh; |
| 4341 | h->def_regular = 1; |
| 4342 | h->type = STT_OBJECT; |
| 4343 | /* h->other = STV_HIDDEN; */ /* Should we? */ |
| 4344 | |
| 4345 | /* Machine-specific: we want the symbol for executables as well. */ |
| 4346 | if (IS_FDPIC (abfd) && ! bfd_elf_link_record_dynamic_symbol (info, h)) |
| 4347 | return FALSE; |
| 4348 | |
| 4349 | if (!IS_FDPIC (abfd)) |
| 4350 | return TRUE; |
| 4351 | |
| 4352 | /* FDPIC supports Thread Local Storage, and this may require a |
| 4353 | procedure linkage table for TLS PLT entries. */ |
| 4354 | |
| 4355 | /* This is mostly copied from |
| 4356 | elflink.c:_bfd_elf_create_dynamic_sections(). */ |
| 4357 | |
| 4358 | flags = pltflags; |
| 4359 | pltflags |= SEC_CODE; |
| 4360 | if (bed->plt_not_loaded) |
| 4361 | pltflags &= ~ (SEC_CODE | SEC_LOAD | SEC_HAS_CONTENTS); |
| 4362 | if (bed->plt_readonly) |
| 4363 | pltflags |= SEC_READONLY; |
| 4364 | |
| 4365 | s = bfd_make_section_with_flags (abfd, ".plt", pltflags); |
| 4366 | if (s == NULL |
| 4367 | || ! bfd_set_section_alignment (abfd, s, bed->plt_alignment)) |
| 4368 | return FALSE; |
| 4369 | /* FRV-specific: remember it. */ |
| 4370 | frvfdpic_plt_section (info) = s; |
| 4371 | |
| 4372 | /* Define the symbol _PROCEDURE_LINKAGE_TABLE_ at the start of the |
| 4373 | .plt section. */ |
| 4374 | if (bed->want_plt_sym) |
| 4375 | { |
| 4376 | h = _bfd_elf_define_linkage_sym (abfd, info, s, |
| 4377 | "_PROCEDURE_LINKAGE_TABLE_"); |
| 4378 | elf_hash_table (info)->hplt = h; |
| 4379 | if (h == NULL) |
| 4380 | return FALSE; |
| 4381 | } |
| 4382 | |
| 4383 | /* FRV-specific: we want rel relocations for the plt. */ |
| 4384 | s = bfd_make_section_with_flags (abfd, ".rel.plt", |
| 4385 | flags | SEC_READONLY); |
| 4386 | if (s == NULL |
| 4387 | || ! bfd_set_section_alignment (abfd, s, bed->s->log_file_align)) |
| 4388 | return FALSE; |
| 4389 | /* FRV-specific: remember it. */ |
| 4390 | frvfdpic_pltrel_section (info) = s; |
| 4391 | |
| 4392 | return TRUE; |
| 4393 | } |
| 4394 | |
| 4395 | /* Make sure the got and plt sections exist, and that our pointers in |
| 4396 | the link hash table point to them. */ |
| 4397 | |
| 4398 | static bfd_boolean |
| 4399 | elf32_frvfdpic_create_dynamic_sections (bfd *abfd, struct bfd_link_info *info) |
| 4400 | { |
| 4401 | /* This is mostly copied from |
| 4402 | elflink.c:_bfd_elf_create_dynamic_sections(). */ |
| 4403 | flagword flags; |
| 4404 | asection *s; |
| 4405 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
| 4406 | |
| 4407 | flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY |
| 4408 | | SEC_LINKER_CREATED); |
| 4409 | |
| 4410 | /* We need to create .plt, .rel[a].plt, .got, .got.plt, .dynbss, and |
| 4411 | .rel[a].bss sections. */ |
| 4412 | |
| 4413 | /* FRV-specific: we want to create the GOT and the PLT in the FRV |
| 4414 | way. */ |
| 4415 | if (! _frv_create_got_section (abfd, info)) |
| 4416 | return FALSE; |
| 4417 | |
| 4418 | /* FRV-specific: make sure we created everything we wanted. */ |
| 4419 | BFD_ASSERT (frvfdpic_got_section (info) && frvfdpic_gotrel_section (info) |
| 4420 | && frvfdpic_gotfixup_section (info) |
| 4421 | && frvfdpic_plt_section (info) |
| 4422 | && frvfdpic_pltrel_section (info)); |
| 4423 | |
| 4424 | if (bed->want_dynbss) |
| 4425 | { |
| 4426 | /* The .dynbss section is a place to put symbols which are defined |
| 4427 | by dynamic objects, are referenced by regular objects, and are |
| 4428 | not functions. We must allocate space for them in the process |
| 4429 | image and use a R_*_COPY reloc to tell the dynamic linker to |
| 4430 | initialize them at run time. The linker script puts the .dynbss |
| 4431 | section into the .bss section of the final image. */ |
| 4432 | s = bfd_make_section_with_flags (abfd, ".dynbss", |
| 4433 | SEC_ALLOC | SEC_LINKER_CREATED); |
| 4434 | if (s == NULL) |
| 4435 | return FALSE; |
| 4436 | |
| 4437 | /* The .rel[a].bss section holds copy relocs. This section is not |
| 4438 | normally needed. We need to create it here, though, so that the |
| 4439 | linker will map it to an output section. We can't just create it |
| 4440 | only if we need it, because we will not know whether we need it |
| 4441 | until we have seen all the input files, and the first time the |
| 4442 | main linker code calls BFD after examining all the input files |
| 4443 | (size_dynamic_sections) the input sections have already been |
| 4444 | mapped to the output sections. If the section turns out not to |
| 4445 | be needed, we can discard it later. We will never need this |
| 4446 | section when generating a shared object, since they do not use |
| 4447 | copy relocs. */ |
| 4448 | if (! info->shared) |
| 4449 | { |
| 4450 | s = bfd_make_section_with_flags (abfd, |
| 4451 | (bed->default_use_rela_p |
| 4452 | ? ".rela.bss" : ".rel.bss"), |
| 4453 | flags | SEC_READONLY); |
| 4454 | if (s == NULL |
| 4455 | || ! bfd_set_section_alignment (abfd, s, bed->s->log_file_align)) |
| 4456 | return FALSE; |
| 4457 | } |
| 4458 | } |
| 4459 | |
| 4460 | return TRUE; |
| 4461 | } |
| 4462 | |
| 4463 | /* Compute the total GOT and PLT size required by each symbol in each |
| 4464 | range. Symbols may require up to 4 words in the GOT: an entry |
| 4465 | pointing to the symbol, an entry pointing to its function |
| 4466 | descriptor, and a private function descriptors taking two |
| 4467 | words. */ |
| 4468 | |
| 4469 | static void |
| 4470 | _frvfdpic_count_nontls_entries (struct frvfdpic_relocs_info *entry, |
| 4471 | struct _frvfdpic_dynamic_got_info *dinfo) |
| 4472 | { |
| 4473 | /* Allocate space for a GOT entry pointing to the symbol. */ |
| 4474 | if (entry->got12) |
| 4475 | dinfo->got12 += 4; |
| 4476 | else if (entry->gotlos) |
| 4477 | dinfo->gotlos += 4; |
| 4478 | else if (entry->gothilo) |
| 4479 | dinfo->gothilo += 4; |
| 4480 | else |
| 4481 | entry->relocs32--; |
| 4482 | entry->relocs32++; |
| 4483 | |
| 4484 | /* Allocate space for a GOT entry pointing to the function |
| 4485 | descriptor. */ |
| 4486 | if (entry->fdgot12) |
| 4487 | dinfo->got12 += 4; |
| 4488 | else if (entry->fdgotlos) |
| 4489 | dinfo->gotlos += 4; |
| 4490 | else if (entry->fdgothilo) |
| 4491 | dinfo->gothilo += 4; |
| 4492 | else |
| 4493 | entry->relocsfd--; |
| 4494 | entry->relocsfd++; |
| 4495 | |
| 4496 | /* Decide whether we need a PLT entry, a function descriptor in the |
| 4497 | GOT, and a lazy PLT entry for this symbol. */ |
| 4498 | entry->plt = entry->call |
| 4499 | && entry->symndx == -1 && ! FRVFDPIC_SYM_LOCAL (dinfo->info, entry->d.h) |
| 4500 | && elf_hash_table (dinfo->info)->dynamic_sections_created; |
| 4501 | entry->privfd = entry->plt |
| 4502 | || entry->fdgoff12 || entry->fdgofflos || entry->fdgoffhilo |
| 4503 | || ((entry->fd || entry->fdgot12 || entry->fdgotlos || entry->fdgothilo) |
| 4504 | && (entry->symndx != -1 |
| 4505 | || FRVFDPIC_FUNCDESC_LOCAL (dinfo->info, entry->d.h))); |
| 4506 | entry->lazyplt = entry->privfd |
| 4507 | && entry->symndx == -1 && ! FRVFDPIC_SYM_LOCAL (dinfo->info, entry->d.h) |
| 4508 | && ! (dinfo->info->flags & DF_BIND_NOW) |
| 4509 | && elf_hash_table (dinfo->info)->dynamic_sections_created; |
| 4510 | |
| 4511 | /* Allocate space for a function descriptor. */ |
| 4512 | if (entry->fdgoff12) |
| 4513 | dinfo->fd12 += 8; |
| 4514 | else if (entry->fdgofflos) |
| 4515 | dinfo->fdlos += 8; |
| 4516 | else if (entry->privfd && entry->plt) |
| 4517 | dinfo->fdplt += 8; |
| 4518 | else if (entry->privfd) |
| 4519 | dinfo->fdhilo += 8; |
| 4520 | else |
| 4521 | entry->relocsfdv--; |
| 4522 | entry->relocsfdv++; |
| 4523 | |
| 4524 | if (entry->lazyplt) |
| 4525 | dinfo->lzplt += 8; |
| 4526 | } |
| 4527 | |
| 4528 | /* Compute the total GOT size required by each TLS symbol in each |
| 4529 | range. Symbols may require up to 5 words in the GOT: an entry |
| 4530 | holding the TLS offset for the symbol, and an entry with a full TLS |
| 4531 | descriptor taking 4 words. */ |
| 4532 | |
| 4533 | static void |
| 4534 | _frvfdpic_count_tls_entries (struct frvfdpic_relocs_info *entry, |
| 4535 | struct _frvfdpic_dynamic_got_info *dinfo, |
| 4536 | bfd_boolean subtract) |
| 4537 | { |
| 4538 | const int l = subtract ? -1 : 1; |
| 4539 | |
| 4540 | /* Allocate space for a GOT entry with the TLS offset of the |
| 4541 | symbol. */ |
| 4542 | if (entry->tlsoff12) |
| 4543 | dinfo->got12 += 4 * l; |
| 4544 | else if (entry->tlsofflos) |
| 4545 | dinfo->gotlos += 4 * l; |
| 4546 | else if (entry->tlsoffhilo) |
| 4547 | dinfo->gothilo += 4 * l; |
| 4548 | else |
| 4549 | entry->relocstlsoff -= l; |
| 4550 | entry->relocstlsoff += l; |
| 4551 | |
| 4552 | /* If there's any TLSOFF relocation, mark the output file as not |
| 4553 | suitable for dlopening. This mark will remain even if we relax |
| 4554 | all such relocations, but this is not a problem, since we'll only |
| 4555 | do so for executables, and we definitely don't want anyone |
| 4556 | dlopening executables. */ |
| 4557 | if (entry->relocstlsoff) |
| 4558 | dinfo->info->flags |= DF_STATIC_TLS; |
| 4559 | |
| 4560 | /* Allocate space for a TLS descriptor. */ |
| 4561 | if (entry->tlsdesc12) |
| 4562 | dinfo->tlsd12 += 8 * l; |
| 4563 | else if (entry->tlsdesclos) |
| 4564 | dinfo->tlsdlos += 8 * l; |
| 4565 | else if (entry->tlsplt) |
| 4566 | dinfo->tlsdplt += 8 * l; |
| 4567 | else if (entry->tlsdeschilo) |
| 4568 | dinfo->tlsdhilo += 8 * l; |
| 4569 | else |
| 4570 | entry->relocstlsd -= l; |
| 4571 | entry->relocstlsd += l; |
| 4572 | } |
| 4573 | |
| 4574 | /* Compute the number of dynamic relocations and fixups that a symbol |
| 4575 | requires, and add (or subtract) from the grand and per-symbol |
| 4576 | totals. */ |
| 4577 | |
| 4578 | static void |
| 4579 | _frvfdpic_count_relocs_fixups (struct frvfdpic_relocs_info *entry, |
| 4580 | struct _frvfdpic_dynamic_got_info *dinfo, |
| 4581 | bfd_boolean subtract) |
| 4582 | { |
| 4583 | bfd_vma relocs = 0, fixups = 0, tlsrets = 0; |
| 4584 | |
| 4585 | if (!dinfo->info->executable || dinfo->info->pie) |
| 4586 | { |
| 4587 | relocs = entry->relocs32 + entry->relocsfd + entry->relocsfdv |
| 4588 | + entry->relocstlsd; |
| 4589 | |
| 4590 | /* In the executable, TLS relocations to symbols that bind |
| 4591 | locally (including those that resolve to global TLS offsets) |
| 4592 | are resolved immediately, without any need for fixups or |
| 4593 | dynamic relocations. In shared libraries, however, we must |
| 4594 | emit dynamic relocations even for local symbols, because we |
| 4595 | don't know the module id the library is going to get at |
| 4596 | run-time, nor its TLS base offset. */ |
| 4597 | if (!dinfo->info->executable |
| 4598 | || (entry->symndx == -1 |
| 4599 | && ! FRVFDPIC_SYM_LOCAL (dinfo->info, entry->d.h))) |
| 4600 | relocs += entry->relocstlsoff; |
| 4601 | } |
| 4602 | else |
| 4603 | { |
| 4604 | if (entry->symndx != -1 || FRVFDPIC_SYM_LOCAL (dinfo->info, entry->d.h)) |
| 4605 | { |
| 4606 | if (entry->symndx != -1 |
| 4607 | || entry->d.h->root.type != bfd_link_hash_undefweak) |
| 4608 | fixups += entry->relocs32 + 2 * entry->relocsfdv; |
| 4609 | fixups += entry->relocstlsd; |
| 4610 | tlsrets += entry->relocstlsd; |
| 4611 | } |
| 4612 | else |
| 4613 | { |
| 4614 | relocs += entry->relocs32 + entry->relocsfdv |
| 4615 | + entry->relocstlsoff + entry->relocstlsd; |
| 4616 | } |
| 4617 | |
| 4618 | if (entry->symndx != -1 |
| 4619 | || FRVFDPIC_FUNCDESC_LOCAL (dinfo->info, entry->d.h)) |
| 4620 | { |
| 4621 | if (entry->symndx != -1 |
| 4622 | || entry->d.h->root.type != bfd_link_hash_undefweak) |
| 4623 | fixups += entry->relocsfd; |
| 4624 | } |
| 4625 | else |
| 4626 | relocs += entry->relocsfd; |
| 4627 | } |
| 4628 | |
| 4629 | if (subtract) |
| 4630 | { |
| 4631 | relocs = - relocs; |
| 4632 | fixups = - fixups; |
| 4633 | tlsrets = - tlsrets; |
| 4634 | } |
| 4635 | |
| 4636 | entry->dynrelocs += relocs; |
| 4637 | entry->fixups += fixups; |
| 4638 | dinfo->relocs += relocs; |
| 4639 | dinfo->fixups += fixups; |
| 4640 | dinfo->tls_ret_refs += tlsrets; |
| 4641 | } |
| 4642 | |
| 4643 | /* Look for opportunities to relax TLS relocations. We can assume |
| 4644 | we're linking the main executable or a static-tls library, since |
| 4645 | otherwise we wouldn't have got here. When relaxing, we have to |
| 4646 | first undo any previous accounting of TLS uses of fixups, dynamic |
| 4647 | relocations, GOT and PLT entries. */ |
| 4648 | |
| 4649 | static void |
| 4650 | _frvfdpic_relax_tls_entries (struct frvfdpic_relocs_info *entry, |
| 4651 | struct _frvfdpic_dynamic_got_info *dinfo, |
| 4652 | bfd_boolean relaxing) |
| 4653 | { |
| 4654 | bfd_boolean changed = ! relaxing; |
| 4655 | |
| 4656 | BFD_ASSERT (dinfo->info->executable |
| 4657 | || (dinfo->info->flags & DF_STATIC_TLS)); |
| 4658 | |
| 4659 | if (entry->tlsdesc12 || entry->tlsdesclos || entry->tlsdeschilo) |
| 4660 | { |
| 4661 | if (! changed) |
| 4662 | { |
| 4663 | _frvfdpic_count_relocs_fixups (entry, dinfo, TRUE); |
| 4664 | _frvfdpic_count_tls_entries (entry, dinfo, TRUE); |
| 4665 | changed = TRUE; |
| 4666 | } |
| 4667 | |
| 4668 | /* When linking an executable, we can always decay GOTTLSDESC to |
| 4669 | TLSMOFF, if the symbol is local, or GOTTLSOFF, otherwise. |
| 4670 | When linking a static-tls shared library, using TLSMOFF is |
| 4671 | not an option, but we can still use GOTTLSOFF. When decaying |
| 4672 | to GOTTLSOFF, we must keep the GOT entry in range. We know |
| 4673 | it has to fit because we'll be trading the 4 words of hte TLS |
| 4674 | descriptor for a single word in the same range. */ |
| 4675 | if (! dinfo->info->executable |
| 4676 | || (entry->symndx == -1 |
| 4677 | && ! FRVFDPIC_SYM_LOCAL (dinfo->info, entry->d.h))) |
| 4678 | { |
| 4679 | entry->tlsoff12 |= entry->tlsdesc12; |
| 4680 | entry->tlsofflos |= entry->tlsdesclos; |
| 4681 | entry->tlsoffhilo |= entry->tlsdeschilo; |
| 4682 | } |
| 4683 | |
| 4684 | entry->tlsdesc12 = entry->tlsdesclos = entry->tlsdeschilo = 0; |
| 4685 | } |
| 4686 | |
| 4687 | /* We can only decay TLSOFFs or call #gettlsoff to TLSMOFF in the |
| 4688 | main executable. We have to check whether the symbol's TLSOFF is |
| 4689 | in range for a setlos. For symbols with a hash entry, we can |
| 4690 | determine exactly what to do; for others locals, we don't have |
| 4691 | addresses handy, so we use the size of the TLS section as an |
| 4692 | approximation. If we get it wrong, we'll retain a GOT entry |
| 4693 | holding the TLS offset (without dynamic relocations or fixups), |
| 4694 | but we'll still optimize away the loads from it. Since TLS sizes |
| 4695 | are generally very small, it's probably not worth attempting to |
| 4696 | do better than this. */ |
| 4697 | if ((entry->tlsplt |
| 4698 | || entry->tlsoff12 || entry->tlsofflos || entry->tlsoffhilo) |
| 4699 | && dinfo->info->executable && relaxing |
| 4700 | && ((entry->symndx == -1 |
| 4701 | && FRVFDPIC_SYM_LOCAL (dinfo->info, entry->d.h) |
| 4702 | /* The above may hold for an undefweak TLS symbol, so make |
| 4703 | sure we don't have this case before accessing def.value |
| 4704 | and def.section. */ |
| 4705 | && (entry->d.h->root.type == bfd_link_hash_undefweak |
| 4706 | || (bfd_vma)(entry->d.h->root.u.def.value |
| 4707 | + (entry->d.h->root.u.def.section |
| 4708 | ->output_section->vma) |
| 4709 | + entry->d.h->root.u.def.section->output_offset |
| 4710 | + entry->addend |
| 4711 | - tls_biased_base (dinfo->info) |
| 4712 | + 32768) < (bfd_vma)65536)) |
| 4713 | || (entry->symndx != -1 |
| 4714 | && (elf_hash_table (dinfo->info)->tls_sec->size |
| 4715 | + abs (entry->addend) < 32768 + FRVFDPIC_TLS_BIAS)))) |
| 4716 | { |
| 4717 | if (! changed) |
| 4718 | { |
| 4719 | _frvfdpic_count_relocs_fixups (entry, dinfo, TRUE); |
| 4720 | _frvfdpic_count_tls_entries (entry, dinfo, TRUE); |
| 4721 | changed = TRUE; |
| 4722 | } |
| 4723 | |
| 4724 | entry->tlsplt = |
| 4725 | entry->tlsoff12 = entry->tlsofflos = entry->tlsoffhilo = 0; |
| 4726 | } |
| 4727 | |
| 4728 | /* We can decay `call #gettlsoff' to a ldi #tlsoff if we already |
| 4729 | have a #gottlsoff12 relocation for this entry, or if we can fit |
| 4730 | one more in the 12-bit (and 16-bit) ranges. */ |
| 4731 | if (entry->tlsplt |
| 4732 | && (entry->tlsoff12 |
| 4733 | || (relaxing |
| 4734 | && dinfo->got12 + dinfo->fd12 + dinfo->tlsd12 <= 4096 - 12 - 4 |
| 4735 | && (dinfo->got12 + dinfo->fd12 + dinfo->tlsd12 |
| 4736 | + dinfo->gotlos + dinfo->fdlos + dinfo->tlsdlos |
| 4737 | <= 65536 - 12 - 4)))) |
| 4738 | { |
| 4739 | if (! changed) |
| 4740 | { |
| 4741 | _frvfdpic_count_relocs_fixups (entry, dinfo, TRUE); |
| 4742 | _frvfdpic_count_tls_entries (entry, dinfo, TRUE); |
| 4743 | changed = TRUE; |
| 4744 | } |
| 4745 | |
| 4746 | entry->tlsoff12 = 1; |
| 4747 | entry->tlsplt = 0; |
| 4748 | } |
| 4749 | |
| 4750 | if (changed) |
| 4751 | { |
| 4752 | _frvfdpic_count_tls_entries (entry, dinfo, FALSE); |
| 4753 | _frvfdpic_count_relocs_fixups (entry, dinfo, FALSE); |
| 4754 | } |
| 4755 | |
| 4756 | return; |
| 4757 | } |
| 4758 | |
| 4759 | /* Compute the total GOT and PLT size required by each symbol in each range. * |
| 4760 | Symbols may require up to 4 words in the GOT: an entry pointing to |
| 4761 | the symbol, an entry pointing to its function descriptor, and a |
| 4762 | private function descriptors taking two words. */ |
| 4763 | |
| 4764 | static int |
| 4765 | _frvfdpic_count_got_plt_entries (void **entryp, void *dinfo_) |
| 4766 | { |
| 4767 | struct frvfdpic_relocs_info *entry = *entryp; |
| 4768 | struct _frvfdpic_dynamic_got_info *dinfo = dinfo_; |
| 4769 | |
| 4770 | _frvfdpic_count_nontls_entries (entry, dinfo); |
| 4771 | |
| 4772 | if (dinfo->info->executable || (dinfo->info->flags & DF_STATIC_TLS)) |
| 4773 | _frvfdpic_relax_tls_entries (entry, dinfo, FALSE); |
| 4774 | else |
| 4775 | { |
| 4776 | _frvfdpic_count_tls_entries (entry, dinfo, FALSE); |
| 4777 | _frvfdpic_count_relocs_fixups (entry, dinfo, FALSE); |
| 4778 | } |
| 4779 | |
| 4780 | return 1; |
| 4781 | } |
| 4782 | |
| 4783 | /* Determine the positive and negative ranges to be used by each |
| 4784 | offset range in the GOT. FDCUR and CUR, that must be aligned to a |
| 4785 | double-word boundary, are the minimum (negative) and maximum |
| 4786 | (positive) GOT offsets already used by previous ranges, except for |
| 4787 | an ODD entry that may have been left behind. GOT and FD indicate |
| 4788 | the size of GOT entries and function descriptors that must be |
| 4789 | placed within the range from -WRAP to WRAP. If there's room left, |
| 4790 | up to FDPLT bytes should be reserved for additional function |
| 4791 | descriptors. */ |
| 4792 | |
| 4793 | inline static bfd_signed_vma |
| 4794 | _frvfdpic_compute_got_alloc_data (struct _frvfdpic_dynamic_got_alloc_data *gad, |
| 4795 | bfd_signed_vma fdcur, |
| 4796 | bfd_signed_vma odd, |
| 4797 | bfd_signed_vma cur, |
| 4798 | bfd_vma got, |
| 4799 | bfd_vma fd, |
| 4800 | bfd_vma fdplt, |
| 4801 | bfd_vma tlsd, |
| 4802 | bfd_vma tlsdplt, |
| 4803 | bfd_vma wrap) |
| 4804 | { |
| 4805 | bfd_signed_vma wrapmin = -wrap; |
| 4806 | const bfd_vma tdescsz = 8; |
| 4807 | |
| 4808 | /* Start at the given initial points. */ |
| 4809 | gad->fdcur = fdcur; |
| 4810 | gad->cur = cur; |
| 4811 | |
| 4812 | /* If we had an incoming odd word and we have any got entries that |
| 4813 | are going to use it, consume it, otherwise leave gad->odd at |
| 4814 | zero. We might force gad->odd to zero and return the incoming |
| 4815 | odd such that it is used by the next range, but then GOT entries |
| 4816 | might appear to be out of order and we wouldn't be able to |
| 4817 | shorten the GOT by one word if it turns out to end with an |
| 4818 | unpaired GOT entry. */ |
| 4819 | if (odd && got) |
| 4820 | { |
| 4821 | gad->odd = odd; |
| 4822 | got -= 4; |
| 4823 | odd = 0; |
| 4824 | } |
| 4825 | else |
| 4826 | gad->odd = 0; |
| 4827 | |
| 4828 | /* If we're left with an unpaired GOT entry, compute its location |
| 4829 | such that we can return it. Otherwise, if got doesn't require an |
| 4830 | odd number of words here, either odd was already zero in the |
| 4831 | block above, or it was set to zero because got was non-zero, or |
| 4832 | got was already zero. In the latter case, we want the value of |
| 4833 | odd to carry over to the return statement, so we don't want to |
| 4834 | reset odd unless the condition below is true. */ |
| 4835 | if (got & 4) |
| 4836 | { |
| 4837 | odd = cur + got; |
| 4838 | got += 4; |
| 4839 | } |
| 4840 | |
| 4841 | /* Compute the tentative boundaries of this range. */ |
| 4842 | gad->max = cur + got; |
| 4843 | gad->min = fdcur - fd; |
| 4844 | gad->fdplt = 0; |
| 4845 | |
| 4846 | /* If function descriptors took too much space, wrap some of them |
| 4847 | around. */ |
| 4848 | if (gad->min < wrapmin) |
| 4849 | { |
| 4850 | gad->max += wrapmin - gad->min; |
| 4851 | gad->tmin = gad->min = wrapmin; |
| 4852 | } |
| 4853 | |
| 4854 | /* If GOT entries took too much space, wrap some of them around. |
| 4855 | This may well cause gad->min to become lower than wrapmin. This |
| 4856 | will cause a relocation overflow later on, so we don't have to |
| 4857 | report it here . */ |
| 4858 | if ((bfd_vma) gad->max > wrap) |
| 4859 | { |
| 4860 | gad->min -= gad->max - wrap; |
| 4861 | gad->max = wrap; |
| 4862 | } |
| 4863 | |
| 4864 | /* Add TLS descriptors. */ |
| 4865 | gad->tmax = gad->max + tlsd; |
| 4866 | gad->tmin = gad->min; |
| 4867 | gad->tlsdplt = 0; |
| 4868 | |
| 4869 | /* If TLS descriptors took too much space, wrap an integral number |
| 4870 | of them around. */ |
| 4871 | if ((bfd_vma) gad->tmax > wrap) |
| 4872 | { |
| 4873 | bfd_vma wrapsize = gad->tmax - wrap; |
| 4874 | |
| 4875 | wrapsize += tdescsz / 2; |
| 4876 | wrapsize &= ~ tdescsz / 2; |
| 4877 | |
| 4878 | gad->tmin -= wrapsize; |
| 4879 | gad->tmax -= wrapsize; |
| 4880 | } |
| 4881 | |
| 4882 | /* If there is space left and we have function descriptors |
| 4883 | referenced in PLT entries that could take advantage of shorter |
| 4884 | offsets, place them now. */ |
| 4885 | if (fdplt && gad->tmin > wrapmin) |
| 4886 | { |
| 4887 | bfd_vma fds; |
| 4888 | |
| 4889 | if ((bfd_vma) (gad->tmin - wrapmin) < fdplt) |
| 4890 | fds = gad->tmin - wrapmin; |
| 4891 | else |
| 4892 | fds = fdplt; |
| 4893 | |
| 4894 | fdplt -= fds; |
| 4895 | gad->min -= fds; |
| 4896 | gad->tmin -= fds; |
| 4897 | gad->fdplt += fds; |
| 4898 | } |
| 4899 | |
| 4900 | /* If there is more space left, try to place some more function |
| 4901 | descriptors for PLT entries. */ |
| 4902 | if (fdplt && (bfd_vma) gad->tmax < wrap) |
| 4903 | { |
| 4904 | bfd_vma fds; |
| 4905 | |
| 4906 | if ((bfd_vma) (wrap - gad->tmax) < fdplt) |
| 4907 | fds = wrap - gad->tmax; |
| 4908 | else |
| 4909 | fds = fdplt; |
| 4910 | |
| 4911 | fdplt -= fds; |
| 4912 | gad->max += fds; |
| 4913 | gad->tmax += fds; |
| 4914 | gad->fdplt += fds; |
| 4915 | } |
| 4916 | |
| 4917 | /* If there is space left and we have TLS descriptors referenced in |
| 4918 | PLT entries that could take advantage of shorter offsets, place |
| 4919 | them now. */ |
| 4920 | if (tlsdplt && gad->tmin > wrapmin) |
| 4921 | { |
| 4922 | bfd_vma tlsds; |
| 4923 | |
| 4924 | if ((bfd_vma) (gad->tmin - wrapmin) < tlsdplt) |
| 4925 | tlsds = (gad->tmin - wrapmin) & ~ (tdescsz / 2); |
| 4926 | else |
| 4927 | tlsds = tlsdplt; |
| 4928 | |
| 4929 | tlsdplt -= tlsds; |
| 4930 | gad->tmin -= tlsds; |
| 4931 | gad->tlsdplt += tlsds; |
| 4932 | } |
| 4933 | |
| 4934 | /* If there is more space left, try to place some more TLS |
| 4935 | descriptors for PLT entries. Although we could try to fit an |
| 4936 | additional TLS descriptor with half of it just before before the |
| 4937 | wrap point and another right past the wrap point, this might |
| 4938 | cause us to run out of space for the next region, so don't do |
| 4939 | it. */ |
| 4940 | if (tlsdplt && (bfd_vma) gad->tmax < wrap - tdescsz / 2) |
| 4941 | { |
| 4942 | bfd_vma tlsds; |
| 4943 | |
| 4944 | if ((bfd_vma) (wrap - gad->tmax) < tlsdplt) |
| 4945 | tlsds = (wrap - gad->tmax) & ~ (tdescsz / 2); |
| 4946 | else |
| 4947 | tlsds = tlsdplt; |
| 4948 | |
| 4949 | tlsdplt -= tlsds; |
| 4950 | gad->tmax += tlsds; |
| 4951 | gad->tlsdplt += tlsds; |
| 4952 | } |
| 4953 | |
| 4954 | /* If odd was initially computed as an offset past the wrap point, |
| 4955 | wrap it around. */ |
| 4956 | if (odd > gad->max) |
| 4957 | odd = gad->min + odd - gad->max; |
| 4958 | |
| 4959 | /* _frvfdpic_get_got_entry() below will always wrap gad->cur if needed |
| 4960 | before returning, so do it here too. This guarantees that, |
| 4961 | should cur and fdcur meet at the wrap point, they'll both be |
| 4962 | equal to min. */ |
| 4963 | if (gad->cur == gad->max) |
| 4964 | gad->cur = gad->min; |
| 4965 | |
| 4966 | /* Ditto for _frvfdpic_get_tlsdesc_entry(). */ |
| 4967 | gad->tcur = gad->max; |
| 4968 | if (gad->tcur == gad->tmax) |
| 4969 | gad->tcur = gad->tmin; |
| 4970 | |
| 4971 | return odd; |
| 4972 | } |
| 4973 | |
| 4974 | /* Compute the location of the next GOT entry, given the allocation |
| 4975 | data for a range. */ |
| 4976 | |
| 4977 | inline static bfd_signed_vma |
| 4978 | _frvfdpic_get_got_entry (struct _frvfdpic_dynamic_got_alloc_data *gad) |
| 4979 | { |
| 4980 | bfd_signed_vma ret; |
| 4981 | |
| 4982 | if (gad->odd) |
| 4983 | { |
| 4984 | /* If there was an odd word left behind, use it. */ |
| 4985 | ret = gad->odd; |
| 4986 | gad->odd = 0; |
| 4987 | } |
| 4988 | else |
| 4989 | { |
| 4990 | /* Otherwise, use the word pointed to by cur, reserve the next |
| 4991 | as an odd word, and skip to the next pair of words, possibly |
| 4992 | wrapping around. */ |
| 4993 | ret = gad->cur; |
| 4994 | gad->odd = gad->cur + 4; |
| 4995 | gad->cur += 8; |
| 4996 | if (gad->cur == gad->max) |
| 4997 | gad->cur = gad->min; |
| 4998 | } |
| 4999 | |
| 5000 | return ret; |
| 5001 | } |
| 5002 | |
| 5003 | /* Compute the location of the next function descriptor entry in the |
| 5004 | GOT, given the allocation data for a range. */ |
| 5005 | |
| 5006 | inline static bfd_signed_vma |
| 5007 | _frvfdpic_get_fd_entry (struct _frvfdpic_dynamic_got_alloc_data *gad) |
| 5008 | { |
| 5009 | /* If we're at the bottom, wrap around, and only then allocate the |
| 5010 | next pair of words. */ |
| 5011 | if (gad->fdcur == gad->min) |
| 5012 | gad->fdcur = gad->max; |
| 5013 | return gad->fdcur -= 8; |
| 5014 | } |
| 5015 | |
| 5016 | /* Compute the location of the next TLS descriptor entry in the GOT, |
| 5017 | given the allocation data for a range. */ |
| 5018 | inline static bfd_signed_vma |
| 5019 | _frvfdpic_get_tlsdesc_entry (struct _frvfdpic_dynamic_got_alloc_data *gad) |
| 5020 | { |
| 5021 | bfd_signed_vma ret; |
| 5022 | |
| 5023 | ret = gad->tcur; |
| 5024 | |
| 5025 | gad->tcur += 8; |
| 5026 | |
| 5027 | /* If we're at the top of the region, wrap around to the bottom. */ |
| 5028 | if (gad->tcur == gad->tmax) |
| 5029 | gad->tcur = gad->tmin; |
| 5030 | |
| 5031 | return ret; |
| 5032 | } |
| 5033 | |
| 5034 | /* Assign GOT offsets for every GOT entry and function descriptor. |
| 5035 | Doing everything in a single pass is tricky. */ |
| 5036 | |
| 5037 | static int |
| 5038 | _frvfdpic_assign_got_entries (void **entryp, void *info_) |
| 5039 | { |
| 5040 | struct frvfdpic_relocs_info *entry = *entryp; |
| 5041 | struct _frvfdpic_dynamic_got_plt_info *dinfo = info_; |
| 5042 | |
| 5043 | if (entry->got12) |
| 5044 | entry->got_entry = _frvfdpic_get_got_entry (&dinfo->got12); |
| 5045 | else if (entry->gotlos) |
| 5046 | entry->got_entry = _frvfdpic_get_got_entry (&dinfo->gotlos); |
| 5047 | else if (entry->gothilo) |
| 5048 | entry->got_entry = _frvfdpic_get_got_entry (&dinfo->gothilo); |
| 5049 | |
| 5050 | if (entry->fdgot12) |
| 5051 | entry->fdgot_entry = _frvfdpic_get_got_entry (&dinfo->got12); |
| 5052 | else if (entry->fdgotlos) |
| 5053 | entry->fdgot_entry = _frvfdpic_get_got_entry (&dinfo->gotlos); |
| 5054 | else if (entry->fdgothilo) |
| 5055 | entry->fdgot_entry = _frvfdpic_get_got_entry (&dinfo->gothilo); |
| 5056 | |
| 5057 | if (entry->fdgoff12) |
| 5058 | entry->fd_entry = _frvfdpic_get_fd_entry (&dinfo->got12); |
| 5059 | else if (entry->plt && dinfo->got12.fdplt) |
| 5060 | { |
| 5061 | dinfo->got12.fdplt -= 8; |
| 5062 | entry->fd_entry = _frvfdpic_get_fd_entry (&dinfo->got12); |
| 5063 | } |
| 5064 | else if (entry->fdgofflos) |
| 5065 | entry->fd_entry = _frvfdpic_get_fd_entry (&dinfo->gotlos); |
| 5066 | else if (entry->plt && dinfo->gotlos.fdplt) |
| 5067 | { |
| 5068 | dinfo->gotlos.fdplt -= 8; |
| 5069 | entry->fd_entry = _frvfdpic_get_fd_entry (&dinfo->gotlos); |
| 5070 | } |
| 5071 | else if (entry->plt) |
| 5072 | { |
| 5073 | dinfo->gothilo.fdplt -= 8; |
| 5074 | entry->fd_entry = _frvfdpic_get_fd_entry (&dinfo->gothilo); |
| 5075 | } |
| 5076 | else if (entry->privfd) |
| 5077 | entry->fd_entry = _frvfdpic_get_fd_entry (&dinfo->gothilo); |
| 5078 | |
| 5079 | if (entry->tlsoff12) |
| 5080 | entry->tlsoff_entry = _frvfdpic_get_got_entry (&dinfo->got12); |
| 5081 | else if (entry->tlsofflos) |
| 5082 | entry->tlsoff_entry = _frvfdpic_get_got_entry (&dinfo->gotlos); |
| 5083 | else if (entry->tlsoffhilo) |
| 5084 | entry->tlsoff_entry = _frvfdpic_get_got_entry (&dinfo->gothilo); |
| 5085 | |
| 5086 | if (entry->tlsdesc12) |
| 5087 | entry->tlsdesc_entry = _frvfdpic_get_tlsdesc_entry (&dinfo->got12); |
| 5088 | else if (entry->tlsplt && dinfo->got12.tlsdplt) |
| 5089 | { |
| 5090 | dinfo->got12.tlsdplt -= 8; |
| 5091 | entry->tlsdesc_entry = _frvfdpic_get_tlsdesc_entry (&dinfo->got12); |
| 5092 | } |
| 5093 | else if (entry->tlsdesclos) |
| 5094 | entry->tlsdesc_entry = _frvfdpic_get_tlsdesc_entry (&dinfo->gotlos); |
| 5095 | else if (entry->tlsplt && dinfo->gotlos.tlsdplt) |
| 5096 | { |
| 5097 | dinfo->gotlos.tlsdplt -= 8; |
| 5098 | entry->tlsdesc_entry = _frvfdpic_get_tlsdesc_entry (&dinfo->gotlos); |
| 5099 | } |
| 5100 | else if (entry->tlsplt) |
| 5101 | { |
| 5102 | dinfo->gothilo.tlsdplt -= 8; |
| 5103 | entry->tlsdesc_entry = _frvfdpic_get_tlsdesc_entry (&dinfo->gothilo); |
| 5104 | } |
| 5105 | else if (entry->tlsdeschilo) |
| 5106 | entry->tlsdesc_entry = _frvfdpic_get_tlsdesc_entry (&dinfo->gothilo); |
| 5107 | |
| 5108 | return 1; |
| 5109 | } |
| 5110 | |
| 5111 | /* Assign GOT offsets to private function descriptors used by PLT |
| 5112 | entries (or referenced by 32-bit offsets), as well as PLT entries |
| 5113 | and lazy PLT entries. */ |
| 5114 | |
| 5115 | static int |
| 5116 | _frvfdpic_assign_plt_entries (void **entryp, void *info_) |
| 5117 | { |
| 5118 | struct frvfdpic_relocs_info *entry = *entryp; |
| 5119 | struct _frvfdpic_dynamic_got_plt_info *dinfo = info_; |
| 5120 | |
| 5121 | if (entry->privfd) |
| 5122 | BFD_ASSERT (entry->fd_entry); |
| 5123 | |
| 5124 | if (entry->plt) |
| 5125 | { |
| 5126 | int size; |
| 5127 | |
| 5128 | /* We use the section's raw size to mark the location of the |
| 5129 | next PLT entry. */ |
| 5130 | entry->plt_entry = frvfdpic_plt_section (dinfo->g.info)->size; |
| 5131 | |
| 5132 | /* Figure out the length of this PLT entry based on the |
| 5133 | addressing mode we need to reach the function descriptor. */ |
| 5134 | BFD_ASSERT (entry->fd_entry); |
| 5135 | if (entry->fd_entry >= -(1 << (12 - 1)) |
| 5136 | && entry->fd_entry < (1 << (12 - 1))) |
| 5137 | size = 8; |
| 5138 | else if (entry->fd_entry >= -(1 << (16 - 1)) |
| 5139 | && entry->fd_entry < (1 << (16 - 1))) |
| 5140 | size = 12; |
| 5141 | else |
| 5142 | size = 16; |
| 5143 | |
| 5144 | frvfdpic_plt_section (dinfo->g.info)->size += size; |
| 5145 | } |
| 5146 | |
| 5147 | if (entry->lazyplt) |
| 5148 | { |
| 5149 | entry->lzplt_entry = dinfo->g.lzplt; |
| 5150 | dinfo->g.lzplt += 8; |
| 5151 | /* If this entry is the one that gets the resolver stub, account |
| 5152 | for the additional instruction. */ |
| 5153 | if (entry->lzplt_entry % FRVFDPIC_LZPLT_BLOCK_SIZE |
| 5154 | == FRVFDPIC_LZPLT_RESOLV_LOC) |
| 5155 | dinfo->g.lzplt += 4; |
| 5156 | } |
| 5157 | |
| 5158 | if (entry->tlsplt) |
| 5159 | { |
| 5160 | int size; |
| 5161 | |
| 5162 | entry->tlsplt_entry |
| 5163 | = frvfdpic_plt_section (dinfo->g.info)->size; |
| 5164 | |
| 5165 | if (dinfo->g.info->executable |
| 5166 | && (entry->symndx != -1 |
| 5167 | || FRVFDPIC_SYM_LOCAL (dinfo->g.info, entry->d.h))) |
| 5168 | { |
| 5169 | if ((bfd_signed_vma)entry->addend >= -(1 << (16 - 1)) |
| 5170 | /* FIXME: here we use the size of the TLS section |
| 5171 | as an upper bound for the value of the TLS |
| 5172 | symbol, because we may not know the exact value |
| 5173 | yet. If we get it wrong, we'll just waste a |
| 5174 | word in the PLT, and we should never get even |
| 5175 | close to 32 KiB of TLS anyway. */ |
| 5176 | && elf_hash_table (dinfo->g.info)->tls_sec |
| 5177 | && (elf_hash_table (dinfo->g.info)->tls_sec->size |
| 5178 | + (bfd_signed_vma)(entry->addend) <= (1 << (16 - 1)))) |
| 5179 | size = 8; |
| 5180 | else |
| 5181 | size = 12; |
| 5182 | } |
| 5183 | else if (entry->tlsoff_entry) |
| 5184 | { |
| 5185 | if (entry->tlsoff_entry >= -(1 << (12 - 1)) |
| 5186 | && entry->tlsoff_entry < (1 << (12 - 1))) |
| 5187 | size = 8; |
| 5188 | else if (entry->tlsoff_entry >= -(1 << (16 - 1)) |
| 5189 | && entry->tlsoff_entry < (1 << (16 - 1))) |
| 5190 | size = 12; |
| 5191 | else |
| 5192 | size = 16; |
| 5193 | } |
| 5194 | else |
| 5195 | { |
| 5196 | BFD_ASSERT (entry->tlsdesc_entry); |
| 5197 | |
| 5198 | if (entry->tlsdesc_entry >= -(1 << (12 - 1)) |
| 5199 | && entry->tlsdesc_entry < (1 << (12 - 1))) |
| 5200 | size = 8; |
| 5201 | else if (entry->tlsdesc_entry >= -(1 << (16 - 1)) |
| 5202 | && entry->tlsdesc_entry < (1 << (16 - 1))) |
| 5203 | size = 12; |
| 5204 | else |
| 5205 | size = 16; |
| 5206 | } |
| 5207 | |
| 5208 | frvfdpic_plt_section (dinfo->g.info)->size += size; |
| 5209 | } |
| 5210 | |
| 5211 | return 1; |
| 5212 | } |
| 5213 | |
| 5214 | /* Cancel out any effects of calling _frvfdpic_assign_got_entries and |
| 5215 | _frvfdpic_assign_plt_entries. */ |
| 5216 | |
| 5217 | static int |
| 5218 | _frvfdpic_reset_got_plt_entries (void **entryp, void *ignore ATTRIBUTE_UNUSED) |
| 5219 | { |
| 5220 | struct frvfdpic_relocs_info *entry = *entryp; |
| 5221 | |
| 5222 | entry->got_entry = 0; |
| 5223 | entry->fdgot_entry = 0; |
| 5224 | entry->fd_entry = 0; |
| 5225 | entry->plt_entry = (bfd_vma)-1; |
| 5226 | entry->lzplt_entry = (bfd_vma)-1; |
| 5227 | entry->tlsoff_entry = 0; |
| 5228 | entry->tlsdesc_entry = 0; |
| 5229 | entry->tlsplt_entry = (bfd_vma)-1; |
| 5230 | |
| 5231 | return 1; |
| 5232 | } |
| 5233 | |
| 5234 | /* Follow indirect and warning hash entries so that each got entry |
| 5235 | points to the final symbol definition. P must point to a pointer |
| 5236 | to the hash table we're traversing. Since this traversal may |
| 5237 | modify the hash table, we set this pointer to NULL to indicate |
| 5238 | we've made a potentially-destructive change to the hash table, so |
| 5239 | the traversal must be restarted. */ |
| 5240 | static int |
| 5241 | _frvfdpic_resolve_final_relocs_info (void **entryp, void *p) |
| 5242 | { |
| 5243 | struct frvfdpic_relocs_info *entry = *entryp; |
| 5244 | htab_t *htab = p; |
| 5245 | |
| 5246 | if (entry->symndx == -1) |
| 5247 | { |
| 5248 | struct elf_link_hash_entry *h = entry->d.h; |
| 5249 | struct frvfdpic_relocs_info *oentry; |
| 5250 | |
| 5251 | while (h->root.type == bfd_link_hash_indirect |
| 5252 | || h->root.type == bfd_link_hash_warning) |
| 5253 | h = (struct elf_link_hash_entry *)h->root.u.i.link; |
| 5254 | |
| 5255 | if (entry->d.h == h) |
| 5256 | return 1; |
| 5257 | |
| 5258 | oentry = frvfdpic_relocs_info_for_global (*htab, 0, h, entry->addend, |
| 5259 | NO_INSERT); |
| 5260 | |
| 5261 | if (oentry) |
| 5262 | { |
| 5263 | /* Merge the two entries. */ |
| 5264 | frvfdpic_pic_merge_early_relocs_info (oentry, entry); |
| 5265 | htab_clear_slot (*htab, entryp); |
| 5266 | return 1; |
| 5267 | } |
| 5268 | |
| 5269 | entry->d.h = h; |
| 5270 | |
| 5271 | /* If we can't find this entry with the new bfd hash, re-insert |
| 5272 | it, and get the traversal restarted. */ |
| 5273 | if (! htab_find (*htab, entry)) |
| 5274 | { |
| 5275 | htab_clear_slot (*htab, entryp); |
| 5276 | entryp = htab_find_slot (*htab, entry, INSERT); |
| 5277 | if (! *entryp) |
| 5278 | *entryp = entry; |
| 5279 | /* Abort the traversal, since the whole table may have |
| 5280 | moved, and leave it up to the parent to restart the |
| 5281 | process. */ |
| 5282 | *(htab_t *)p = NULL; |
| 5283 | return 0; |
| 5284 | } |
| 5285 | } |
| 5286 | |
| 5287 | return 1; |
| 5288 | } |
| 5289 | |
| 5290 | /* Compute the total size of the GOT, the PLT, the dynamic relocations |
| 5291 | section and the rofixup section. Assign locations for GOT and PLT |
| 5292 | entries. */ |
| 5293 | |
| 5294 | static bfd_boolean |
| 5295 | _frvfdpic_size_got_plt (bfd *output_bfd, |
| 5296 | struct _frvfdpic_dynamic_got_plt_info *gpinfop) |
| 5297 | { |
| 5298 | bfd_signed_vma odd; |
| 5299 | bfd_vma limit, tlslimit; |
| 5300 | struct bfd_link_info *info = gpinfop->g.info; |
| 5301 | bfd *dynobj = elf_hash_table (info)->dynobj; |
| 5302 | |
| 5303 | memcpy (frvfdpic_dynamic_got_plt_info (info), &gpinfop->g, |
| 5304 | sizeof (gpinfop->g)); |
| 5305 | |
| 5306 | odd = 12; |
| 5307 | /* Compute the total size taken by entries in the 12-bit and 16-bit |
| 5308 | ranges, to tell how many PLT function descriptors we can bring |
| 5309 | into the 12-bit range without causing the 16-bit range to |
| 5310 | overflow. */ |
| 5311 | limit = odd + gpinfop->g.got12 + gpinfop->g.gotlos |
| 5312 | + gpinfop->g.fd12 + gpinfop->g.fdlos |
| 5313 | + gpinfop->g.tlsd12 + gpinfop->g.tlsdlos; |
| 5314 | if (limit < (bfd_vma)1 << 16) |
| 5315 | limit = ((bfd_vma)1 << 16) - limit; |
| 5316 | else |
| 5317 | limit = 0; |
| 5318 | if (gpinfop->g.fdplt < limit) |
| 5319 | { |
| 5320 | tlslimit = (limit - gpinfop->g.fdplt) & ~ (bfd_vma) 8; |
| 5321 | limit = gpinfop->g.fdplt; |
| 5322 | } |
| 5323 | else |
| 5324 | tlslimit = 0; |
| 5325 | if (gpinfop->g.tlsdplt < tlslimit) |
| 5326 | tlslimit = gpinfop->g.tlsdplt; |
| 5327 | |
| 5328 | /* Determine the ranges of GOT offsets that we can use for each |
| 5329 | range of addressing modes. */ |
| 5330 | odd = _frvfdpic_compute_got_alloc_data (&gpinfop->got12, |
| 5331 | 0, |
| 5332 | odd, |
| 5333 | 16, |
| 5334 | gpinfop->g.got12, |
| 5335 | gpinfop->g.fd12, |
| 5336 | limit, |
| 5337 | gpinfop->g.tlsd12, |
| 5338 | tlslimit, |
| 5339 | (bfd_vma)1 << (12-1)); |
| 5340 | odd = _frvfdpic_compute_got_alloc_data (&gpinfop->gotlos, |
| 5341 | gpinfop->got12.tmin, |
| 5342 | odd, |
| 5343 | gpinfop->got12.tmax, |
| 5344 | gpinfop->g.gotlos, |
| 5345 | gpinfop->g.fdlos, |
| 5346 | gpinfop->g.fdplt |
| 5347 | - gpinfop->got12.fdplt, |
| 5348 | gpinfop->g.tlsdlos, |
| 5349 | gpinfop->g.tlsdplt |
| 5350 | - gpinfop->got12.tlsdplt, |
| 5351 | (bfd_vma)1 << (16-1)); |
| 5352 | odd = _frvfdpic_compute_got_alloc_data (&gpinfop->gothilo, |
| 5353 | gpinfop->gotlos.tmin, |
| 5354 | odd, |
| 5355 | gpinfop->gotlos.tmax, |
| 5356 | gpinfop->g.gothilo, |
| 5357 | gpinfop->g.fdhilo, |
| 5358 | gpinfop->g.fdplt |
| 5359 | - gpinfop->got12.fdplt |
| 5360 | - gpinfop->gotlos.fdplt, |
| 5361 | gpinfop->g.tlsdhilo, |
| 5362 | gpinfop->g.tlsdplt |
| 5363 | - gpinfop->got12.tlsdplt |
| 5364 | - gpinfop->gotlos.tlsdplt, |
| 5365 | (bfd_vma)1 << (32-1)); |
| 5366 | |
| 5367 | /* Now assign (most) GOT offsets. */ |
| 5368 | htab_traverse (frvfdpic_relocs_info (info), _frvfdpic_assign_got_entries, |
| 5369 | gpinfop); |
| 5370 | |
| 5371 | frvfdpic_got_section (info)->size = gpinfop->gothilo.tmax |
| 5372 | - gpinfop->gothilo.tmin |
| 5373 | /* If an odd word is the last word of the GOT, we don't need this |
| 5374 | word to be part of the GOT. */ |
| 5375 | - (odd + 4 == gpinfop->gothilo.tmax ? 4 : 0); |
| 5376 | if (frvfdpic_got_section (info)->size == 0) |
| 5377 | frvfdpic_got_section (info)->flags |= SEC_EXCLUDE; |
| 5378 | else if (frvfdpic_got_section (info)->size == 12 |
| 5379 | && ! elf_hash_table (info)->dynamic_sections_created) |
| 5380 | { |
| 5381 | frvfdpic_got_section (info)->flags |= SEC_EXCLUDE; |
| 5382 | frvfdpic_got_section (info)->size = 0; |
| 5383 | } |
| 5384 | /* This will be non-NULL during relaxation. The assumption is that |
| 5385 | the size of one of these sections will never grow, only shrink, |
| 5386 | so we can use the larger buffer we allocated before. */ |
| 5387 | else if (frvfdpic_got_section (info)->contents == NULL) |
| 5388 | { |
| 5389 | frvfdpic_got_section (info)->contents = |
| 5390 | (bfd_byte *) bfd_zalloc (dynobj, |
| 5391 | frvfdpic_got_section (info)->size); |
| 5392 | if (frvfdpic_got_section (info)->contents == NULL) |
| 5393 | return FALSE; |
| 5394 | } |
| 5395 | |
| 5396 | if (frvfdpic_gotrel_section (info)) |
| 5397 | /* Subtract the number of lzplt entries, since those will generate |
| 5398 | relocations in the pltrel section. */ |
| 5399 | frvfdpic_gotrel_section (info)->size = |
| 5400 | (gpinfop->g.relocs - gpinfop->g.lzplt / 8) |
| 5401 | * get_elf_backend_data (output_bfd)->s->sizeof_rel; |
| 5402 | else |
| 5403 | BFD_ASSERT (gpinfop->g.relocs == 0); |
| 5404 | if (frvfdpic_gotrel_section (info)->size == 0) |
| 5405 | frvfdpic_gotrel_section (info)->flags |= SEC_EXCLUDE; |
| 5406 | else if (frvfdpic_gotrel_section (info)->contents == NULL) |
| 5407 | { |
| 5408 | frvfdpic_gotrel_section (info)->contents = |
| 5409 | (bfd_byte *) bfd_zalloc (dynobj, |
| 5410 | frvfdpic_gotrel_section (info)->size); |
| 5411 | if (frvfdpic_gotrel_section (info)->contents == NULL) |
| 5412 | return FALSE; |
| 5413 | } |
| 5414 | |
| 5415 | frvfdpic_gotfixup_section (info)->size = (gpinfop->g.fixups + 1) * 4; |
| 5416 | if (frvfdpic_gotfixup_section (info)->size == 0) |
| 5417 | frvfdpic_gotfixup_section (info)->flags |= SEC_EXCLUDE; |
| 5418 | else if (frvfdpic_gotfixup_section (info)->contents == NULL) |
| 5419 | { |
| 5420 | frvfdpic_gotfixup_section (info)->contents = |
| 5421 | (bfd_byte *) bfd_zalloc (dynobj, |
| 5422 | frvfdpic_gotfixup_section (info)->size); |
| 5423 | if (frvfdpic_gotfixup_section (info)->contents == NULL) |
| 5424 | return FALSE; |
| 5425 | } |
| 5426 | |
| 5427 | if (frvfdpic_pltrel_section (info)) |
| 5428 | { |
| 5429 | frvfdpic_pltrel_section (info)->size = |
| 5430 | gpinfop->g.lzplt / 8 |
| 5431 | * get_elf_backend_data (output_bfd)->s->sizeof_rel; |
| 5432 | if (frvfdpic_pltrel_section (info)->size == 0) |
| 5433 | frvfdpic_pltrel_section (info)->flags |= SEC_EXCLUDE; |
| 5434 | else if (frvfdpic_pltrel_section (info)->contents == NULL) |
| 5435 | { |
| 5436 | frvfdpic_pltrel_section (info)->contents = |
| 5437 | (bfd_byte *) bfd_zalloc (dynobj, |
| 5438 | frvfdpic_pltrel_section (info)->size); |
| 5439 | if (frvfdpic_pltrel_section (info)->contents == NULL) |
| 5440 | return FALSE; |
| 5441 | } |
| 5442 | } |
| 5443 | |
| 5444 | /* Add 4 bytes for every block of at most 65535 lazy PLT entries, |
| 5445 | such that there's room for the additional instruction needed to |
| 5446 | call the resolver. Since _frvfdpic_assign_got_entries didn't |
| 5447 | account for them, our block size is 4 bytes smaller than the real |
| 5448 | block size. */ |
| 5449 | if (frvfdpic_plt_section (info)) |
| 5450 | { |
| 5451 | frvfdpic_plt_section (info)->size = gpinfop->g.lzplt |
| 5452 | + ((gpinfop->g.lzplt + (FRVFDPIC_LZPLT_BLOCK_SIZE - 4) - 8) |
| 5453 | / (FRVFDPIC_LZPLT_BLOCK_SIZE - 4) * 4); |
| 5454 | } |
| 5455 | |
| 5456 | /* Reset it, such that _frvfdpic_assign_plt_entries() can use it to |
| 5457 | actually assign lazy PLT entries addresses. */ |
| 5458 | gpinfop->g.lzplt = 0; |
| 5459 | |
| 5460 | /* Save information that we're going to need to generate GOT and PLT |
| 5461 | entries. */ |
| 5462 | frvfdpic_got_initial_offset (info) = -gpinfop->gothilo.tmin; |
| 5463 | |
| 5464 | if (get_elf_backend_data (output_bfd)->want_got_sym) |
| 5465 | elf_hash_table (info)->hgot->root.u.def.value |
| 5466 | = frvfdpic_got_initial_offset (info); |
| 5467 | |
| 5468 | if (frvfdpic_plt_section (info)) |
| 5469 | frvfdpic_plt_initial_offset (info) = |
| 5470 | frvfdpic_plt_section (info)->size; |
| 5471 | |
| 5472 | /* Allocate a ret statement at plt_initial_offset, to be used by |
| 5473 | locally-resolved TLS descriptors. */ |
| 5474 | if (gpinfop->g.tls_ret_refs) |
| 5475 | frvfdpic_plt_section (info)->size += 4; |
| 5476 | |
| 5477 | htab_traverse (frvfdpic_relocs_info (info), _frvfdpic_assign_plt_entries, |
| 5478 | gpinfop); |
| 5479 | |
| 5480 | /* Allocate the PLT section contents only after |
| 5481 | _frvfdpic_assign_plt_entries has a chance to add the size of the |
| 5482 | non-lazy PLT entries. */ |
| 5483 | if (frvfdpic_plt_section (info)) |
| 5484 | { |
| 5485 | if (frvfdpic_plt_section (info)->size == 0) |
| 5486 | frvfdpic_plt_section (info)->flags |= SEC_EXCLUDE; |
| 5487 | else if (frvfdpic_plt_section (info)->contents == NULL) |
| 5488 | { |
| 5489 | frvfdpic_plt_section (info)->contents = |
| 5490 | (bfd_byte *) bfd_zalloc (dynobj, |
| 5491 | frvfdpic_plt_section (info)->size); |
| 5492 | if (frvfdpic_plt_section (info)->contents == NULL) |
| 5493 | return FALSE; |
| 5494 | } |
| 5495 | } |
| 5496 | |
| 5497 | return TRUE; |
| 5498 | } |
| 5499 | |
| 5500 | /* Set the sizes of the dynamic sections. */ |
| 5501 | |
| 5502 | static bfd_boolean |
| 5503 | elf32_frvfdpic_size_dynamic_sections (bfd *output_bfd, |
| 5504 | struct bfd_link_info *info) |
| 5505 | { |
| 5506 | bfd *dynobj; |
| 5507 | asection *s; |
| 5508 | struct _frvfdpic_dynamic_got_plt_info gpinfo; |
| 5509 | |
| 5510 | dynobj = elf_hash_table (info)->dynobj; |
| 5511 | BFD_ASSERT (dynobj != NULL); |
| 5512 | |
| 5513 | if (elf_hash_table (info)->dynamic_sections_created) |
| 5514 | { |
| 5515 | /* Set the contents of the .interp section to the interpreter. */ |
| 5516 | if (info->executable) |
| 5517 | { |
| 5518 | s = bfd_get_section_by_name (dynobj, ".interp"); |
| 5519 | BFD_ASSERT (s != NULL); |
| 5520 | s->size = sizeof ELF_DYNAMIC_INTERPRETER; |
| 5521 | s->contents = (bfd_byte *) ELF_DYNAMIC_INTERPRETER; |
| 5522 | } |
| 5523 | } |
| 5524 | |
| 5525 | memset (&gpinfo, 0, sizeof (gpinfo)); |
| 5526 | gpinfo.g.info = info; |
| 5527 | |
| 5528 | for (;;) |
| 5529 | { |
| 5530 | htab_t relocs = frvfdpic_relocs_info (info); |
| 5531 | |
| 5532 | htab_traverse (relocs, _frvfdpic_resolve_final_relocs_info, &relocs); |
| 5533 | |
| 5534 | if (relocs == frvfdpic_relocs_info (info)) |
| 5535 | break; |
| 5536 | } |
| 5537 | |
| 5538 | htab_traverse (frvfdpic_relocs_info (info), _frvfdpic_count_got_plt_entries, |
| 5539 | &gpinfo.g); |
| 5540 | |
| 5541 | /* Allocate space to save the summary information, we're going to |
| 5542 | use it if we're doing relaxations. */ |
| 5543 | frvfdpic_dynamic_got_plt_info (info) = bfd_alloc (dynobj, sizeof (gpinfo.g)); |
| 5544 | |
| 5545 | if (!_frvfdpic_size_got_plt (output_bfd, &gpinfo)) |
| 5546 | return FALSE; |
| 5547 | |
| 5548 | if (elf_hash_table (info)->dynamic_sections_created) |
| 5549 | { |
| 5550 | if (frvfdpic_got_section (info)->size) |
| 5551 | if (!_bfd_elf_add_dynamic_entry (info, DT_PLTGOT, 0)) |
| 5552 | return FALSE; |
| 5553 | |
| 5554 | if (frvfdpic_pltrel_section (info)->size) |
| 5555 | if (!_bfd_elf_add_dynamic_entry (info, DT_PLTRELSZ, 0) |
| 5556 | || !_bfd_elf_add_dynamic_entry (info, DT_PLTREL, DT_REL) |
| 5557 | || !_bfd_elf_add_dynamic_entry (info, DT_JMPREL, 0)) |
| 5558 | return FALSE; |
| 5559 | |
| 5560 | if (frvfdpic_gotrel_section (info)->size) |
| 5561 | if (!_bfd_elf_add_dynamic_entry (info, DT_REL, 0) |
| 5562 | || !_bfd_elf_add_dynamic_entry (info, DT_RELSZ, 0) |
| 5563 | || !_bfd_elf_add_dynamic_entry (info, DT_RELENT, |
| 5564 | sizeof (Elf32_External_Rel))) |
| 5565 | return FALSE; |
| 5566 | } |
| 5567 | |
| 5568 | return TRUE; |
| 5569 | } |
| 5570 | |
| 5571 | static bfd_boolean |
| 5572 | elf32_frvfdpic_always_size_sections (bfd *output_bfd, |
| 5573 | struct bfd_link_info *info) |
| 5574 | { |
| 5575 | if (!info->relocatable) |
| 5576 | { |
| 5577 | struct elf_link_hash_entry *h; |
| 5578 | |
| 5579 | /* Force a PT_GNU_STACK segment to be created. */ |
| 5580 | if (! elf_tdata (output_bfd)->stack_flags) |
| 5581 | elf_tdata (output_bfd)->stack_flags = PF_R | PF_W | PF_X; |
| 5582 | |
| 5583 | /* Define __stacksize if it's not defined yet. */ |
| 5584 | h = elf_link_hash_lookup (elf_hash_table (info), "__stacksize", |
| 5585 | FALSE, FALSE, FALSE); |
| 5586 | if (! h || h->root.type != bfd_link_hash_defined |
| 5587 | || h->type != STT_OBJECT |
| 5588 | || !h->def_regular) |
| 5589 | { |
| 5590 | struct bfd_link_hash_entry *bh = NULL; |
| 5591 | |
| 5592 | if (!(_bfd_generic_link_add_one_symbol |
| 5593 | (info, output_bfd, "__stacksize", |
| 5594 | BSF_GLOBAL, bfd_abs_section_ptr, DEFAULT_STACK_SIZE, |
| 5595 | (const char *) NULL, FALSE, |
| 5596 | get_elf_backend_data (output_bfd)->collect, &bh))) |
| 5597 | return FALSE; |
| 5598 | |
| 5599 | h = (struct elf_link_hash_entry *) bh; |
| 5600 | h->def_regular = 1; |
| 5601 | h->type = STT_OBJECT; |
| 5602 | /* This one must NOT be hidden. */ |
| 5603 | } |
| 5604 | } |
| 5605 | |
| 5606 | return TRUE; |
| 5607 | } |
| 5608 | |
| 5609 | /* Check whether any of the relocations was optimized away, and |
| 5610 | subtract it from the relocation or fixup count. */ |
| 5611 | static bfd_boolean |
| 5612 | _frvfdpic_check_discarded_relocs (bfd *abfd, asection *sec, |
| 5613 | struct bfd_link_info *info, |
| 5614 | |
| 5615 | bfd_boolean *changed) |
| 5616 | { |
| 5617 | Elf_Internal_Shdr *symtab_hdr; |
| 5618 | struct elf_link_hash_entry **sym_hashes; |
| 5619 | Elf_Internal_Rela *rel, *erel; |
| 5620 | |
| 5621 | if ((sec->flags & SEC_RELOC) == 0 |
| 5622 | || sec->reloc_count == 0) |
| 5623 | return TRUE; |
| 5624 | |
| 5625 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; |
| 5626 | sym_hashes = elf_sym_hashes (abfd); |
| 5627 | |
| 5628 | rel = elf_section_data (sec)->relocs; |
| 5629 | |
| 5630 | /* Now examine each relocation. */ |
| 5631 | for (erel = rel + sec->reloc_count; rel < erel; rel++) |
| 5632 | { |
| 5633 | struct elf_link_hash_entry *h; |
| 5634 | unsigned long r_symndx; |
| 5635 | struct frvfdpic_relocs_info *picrel; |
| 5636 | struct _frvfdpic_dynamic_got_info *dinfo; |
| 5637 | |
| 5638 | if (ELF32_R_TYPE (rel->r_info) != R_FRV_32 |
| 5639 | && ELF32_R_TYPE (rel->r_info) != R_FRV_FUNCDESC) |
| 5640 | continue; |
| 5641 | |
| 5642 | if (_bfd_elf_section_offset (sec->output_section->owner, |
| 5643 | info, sec, rel->r_offset) |
| 5644 | != (bfd_vma)-1) |
| 5645 | continue; |
| 5646 | |
| 5647 | r_symndx = ELF32_R_SYM (rel->r_info); |
| 5648 | if (r_symndx < symtab_hdr->sh_info) |
| 5649 | h = NULL; |
| 5650 | else |
| 5651 | { |
| 5652 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; |
| 5653 | while (h->root.type == bfd_link_hash_indirect |
| 5654 | || h->root.type == bfd_link_hash_warning) |
| 5655 | h = (struct elf_link_hash_entry *)h->root.u.i.link; |
| 5656 | } |
| 5657 | |
| 5658 | if (h != NULL) |
| 5659 | picrel = frvfdpic_relocs_info_for_global (frvfdpic_relocs_info (info), |
| 5660 | abfd, h, |
| 5661 | rel->r_addend, NO_INSERT); |
| 5662 | else |
| 5663 | picrel = frvfdpic_relocs_info_for_local (frvfdpic_relocs_info (info), |
| 5664 | abfd, r_symndx, |
| 5665 | rel->r_addend, NO_INSERT); |
| 5666 | |
| 5667 | if (! picrel) |
| 5668 | return FALSE; |
| 5669 | |
| 5670 | *changed = TRUE; |
| 5671 | dinfo = frvfdpic_dynamic_got_plt_info (info); |
| 5672 | |
| 5673 | _frvfdpic_count_relocs_fixups (picrel, dinfo, TRUE); |
| 5674 | if (ELF32_R_TYPE (rel->r_info) == R_FRV_32) |
| 5675 | picrel->relocs32--; |
| 5676 | else /* we know (ELF32_R_TYPE (rel->r_info) == R_FRV_FUNCDESC) */ |
| 5677 | picrel->relocsfd--; |
| 5678 | _frvfdpic_count_relocs_fixups (picrel, dinfo, FALSE); |
| 5679 | } |
| 5680 | |
| 5681 | return TRUE; |
| 5682 | } |
| 5683 | |
| 5684 | static bfd_boolean |
| 5685 | frvfdpic_elf_discard_info (bfd *ibfd, |
| 5686 | struct elf_reloc_cookie *cookie ATTRIBUTE_UNUSED, |
| 5687 | struct bfd_link_info *info) |
| 5688 | { |
| 5689 | bfd_boolean changed = FALSE; |
| 5690 | asection *s; |
| 5691 | bfd *obfd = NULL; |
| 5692 | |
| 5693 | /* Account for relaxation of .eh_frame section. */ |
| 5694 | for (s = ibfd->sections; s; s = s->next) |
| 5695 | if (s->sec_info_type == ELF_INFO_TYPE_EH_FRAME) |
| 5696 | { |
| 5697 | if (!_frvfdpic_check_discarded_relocs (ibfd, s, info, &changed)) |
| 5698 | return FALSE; |
| 5699 | obfd = s->output_section->owner; |
| 5700 | } |
| 5701 | |
| 5702 | if (changed) |
| 5703 | { |
| 5704 | struct _frvfdpic_dynamic_got_plt_info gpinfo; |
| 5705 | |
| 5706 | memset (&gpinfo, 0, sizeof (gpinfo)); |
| 5707 | memcpy (&gpinfo.g, frvfdpic_dynamic_got_plt_info (info), |
| 5708 | sizeof (gpinfo.g)); |
| 5709 | |
| 5710 | /* Clear GOT and PLT assignments. */ |
| 5711 | htab_traverse (frvfdpic_relocs_info (info), |
| 5712 | _frvfdpic_reset_got_plt_entries, |
| 5713 | NULL); |
| 5714 | |
| 5715 | if (!_frvfdpic_size_got_plt (obfd, &gpinfo)) |
| 5716 | return FALSE; |
| 5717 | } |
| 5718 | |
| 5719 | return TRUE; |
| 5720 | } |
| 5721 | |
| 5722 | /* Look for opportunities to relax TLS relocations. We can assume |
| 5723 | we're linking the main executable or a static-tls library, since |
| 5724 | otherwise we wouldn't have got here. */ |
| 5725 | |
| 5726 | static int |
| 5727 | _frvfdpic_relax_got_plt_entries (void **entryp, void *dinfo_) |
| 5728 | { |
| 5729 | struct frvfdpic_relocs_info *entry = *entryp; |
| 5730 | struct _frvfdpic_dynamic_got_info *dinfo = dinfo_; |
| 5731 | |
| 5732 | _frvfdpic_relax_tls_entries (entry, dinfo, TRUE); |
| 5733 | |
| 5734 | return 1; |
| 5735 | } |
| 5736 | |
| 5737 | static bfd_boolean |
| 5738 | elf32_frvfdpic_relax_section (bfd *abfd ATTRIBUTE_UNUSED, asection *sec, |
| 5739 | struct bfd_link_info *info, bfd_boolean *again) |
| 5740 | { |
| 5741 | struct _frvfdpic_dynamic_got_plt_info gpinfo; |
| 5742 | |
| 5743 | if (info->relocatable) |
| 5744 | (*info->callbacks->einfo) |
| 5745 | (_("%P%F: --relax and -r may not be used together\n")); |
| 5746 | |
| 5747 | /* If we return early, we didn't change anything. */ |
| 5748 | *again = FALSE; |
| 5749 | |
| 5750 | /* We'll do our thing when requested to relax the GOT section. */ |
| 5751 | if (sec != frvfdpic_got_section (info)) |
| 5752 | return TRUE; |
| 5753 | |
| 5754 | /* We can only relax when linking the main executable or a library |
| 5755 | that can't be dlopened. */ |
| 5756 | if (! info->executable && ! (info->flags & DF_STATIC_TLS)) |
| 5757 | return TRUE; |
| 5758 | |
| 5759 | /* If there isn't a TLS section for this binary, we can't do |
| 5760 | anything about its TLS relocations (it probably doesn't have |
| 5761 | any. */ |
| 5762 | if (elf_hash_table (info)->tls_sec == NULL) |
| 5763 | return TRUE; |
| 5764 | |
| 5765 | memset (&gpinfo, 0, sizeof (gpinfo)); |
| 5766 | memcpy (&gpinfo.g, frvfdpic_dynamic_got_plt_info (info), sizeof (gpinfo.g)); |
| 5767 | |
| 5768 | /* Now look for opportunities to relax, adjusting the GOT usage |
| 5769 | as needed. */ |
| 5770 | htab_traverse (frvfdpic_relocs_info (info), |
| 5771 | _frvfdpic_relax_got_plt_entries, |
| 5772 | &gpinfo.g); |
| 5773 | |
| 5774 | /* If we changed anything, reset and re-assign GOT and PLT entries. */ |
| 5775 | if (memcmp (frvfdpic_dynamic_got_plt_info (info), |
| 5776 | &gpinfo.g, sizeof (gpinfo.g)) != 0) |
| 5777 | { |
| 5778 | /* Clear GOT and PLT assignments. */ |
| 5779 | htab_traverse (frvfdpic_relocs_info (info), |
| 5780 | _frvfdpic_reset_got_plt_entries, |
| 5781 | NULL); |
| 5782 | |
| 5783 | /* The owner of the TLS section is the output bfd. There should |
| 5784 | be a better way to get to it. */ |
| 5785 | if (!_frvfdpic_size_got_plt (elf_hash_table (info)->tls_sec->owner, |
| 5786 | &gpinfo)) |
| 5787 | return FALSE; |
| 5788 | |
| 5789 | /* Repeat until we don't make any further changes. We could fail to |
| 5790 | introduce changes in a round if, for example, the 12-bit range is |
| 5791 | full, but we later release some space by getting rid of TLS |
| 5792 | descriptors in it. We have to repeat the whole process because |
| 5793 | we might have changed the size of a section processed before this |
| 5794 | one. */ |
| 5795 | *again = TRUE; |
| 5796 | } |
| 5797 | |
| 5798 | return TRUE; |
| 5799 | } |
| 5800 | |
| 5801 | static bfd_boolean |
| 5802 | elf32_frvfdpic_modify_program_headers (bfd *output_bfd, |
| 5803 | struct bfd_link_info *info) |
| 5804 | { |
| 5805 | struct elf_obj_tdata *tdata = elf_tdata (output_bfd); |
| 5806 | struct elf_segment_map *m; |
| 5807 | Elf_Internal_Phdr *p; |
| 5808 | |
| 5809 | /* objcopy and strip preserve what's already there using |
| 5810 | elf32_frvfdpic_copy_private_bfd_data (). */ |
| 5811 | if (! info) |
| 5812 | return TRUE; |
| 5813 | |
| 5814 | for (p = tdata->phdr, m = tdata->segment_map; m != NULL; m = m->next, p++) |
| 5815 | if (m->p_type == PT_GNU_STACK) |
| 5816 | break; |
| 5817 | |
| 5818 | if (m) |
| 5819 | { |
| 5820 | struct elf_link_hash_entry *h; |
| 5821 | |
| 5822 | /* Obtain the pointer to the __stacksize symbol. */ |
| 5823 | h = elf_link_hash_lookup (elf_hash_table (info), "__stacksize", |
| 5824 | FALSE, FALSE, FALSE); |
| 5825 | if (h) |
| 5826 | { |
| 5827 | while (h->root.type == bfd_link_hash_indirect |
| 5828 | || h->root.type == bfd_link_hash_warning) |
| 5829 | h = (struct elf_link_hash_entry *) h->root.u.i.link; |
| 5830 | BFD_ASSERT (h->root.type == bfd_link_hash_defined); |
| 5831 | } |
| 5832 | |
| 5833 | /* Set the header p_memsz from the symbol value. We |
| 5834 | intentionally ignore the symbol section. */ |
| 5835 | if (h && h->root.type == bfd_link_hash_defined) |
| 5836 | p->p_memsz = h->root.u.def.value; |
| 5837 | else |
| 5838 | p->p_memsz = DEFAULT_STACK_SIZE; |
| 5839 | |
| 5840 | p->p_align = 8; |
| 5841 | } |
| 5842 | |
| 5843 | return TRUE; |
| 5844 | } |
| 5845 | |
| 5846 | /* Fill in code and data in dynamic sections. */ |
| 5847 | |
| 5848 | static bfd_boolean |
| 5849 | elf32_frv_finish_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED, |
| 5850 | struct bfd_link_info *info ATTRIBUTE_UNUSED) |
| 5851 | { |
| 5852 | /* Nothing to be done for non-FDPIC. */ |
| 5853 | return TRUE; |
| 5854 | } |
| 5855 | |
| 5856 | static bfd_boolean |
| 5857 | elf32_frvfdpic_finish_dynamic_sections (bfd *output_bfd, |
| 5858 | struct bfd_link_info *info) |
| 5859 | { |
| 5860 | bfd *dynobj; |
| 5861 | asection *sdyn; |
| 5862 | |
| 5863 | dynobj = elf_hash_table (info)->dynobj; |
| 5864 | |
| 5865 | if (frvfdpic_dynamic_got_plt_info (info)) |
| 5866 | { |
| 5867 | BFD_ASSERT (frvfdpic_dynamic_got_plt_info (info)->tls_ret_refs == 0); |
| 5868 | } |
| 5869 | if (frvfdpic_got_section (info)) |
| 5870 | { |
| 5871 | BFD_ASSERT (frvfdpic_gotrel_section (info)->size |
| 5872 | == (frvfdpic_gotrel_section (info)->reloc_count |
| 5873 | * sizeof (Elf32_External_Rel))); |
| 5874 | |
| 5875 | if (frvfdpic_gotfixup_section (info)) |
| 5876 | { |
| 5877 | struct elf_link_hash_entry *hgot = elf_hash_table (info)->hgot; |
| 5878 | bfd_vma got_value = hgot->root.u.def.value |
| 5879 | + hgot->root.u.def.section->output_section->vma |
| 5880 | + hgot->root.u.def.section->output_offset; |
| 5881 | struct bfd_link_hash_entry *hend; |
| 5882 | |
| 5883 | _frvfdpic_add_rofixup (output_bfd, frvfdpic_gotfixup_section (info), |
| 5884 | got_value, 0); |
| 5885 | |
| 5886 | if (frvfdpic_gotfixup_section (info)->size |
| 5887 | != (frvfdpic_gotfixup_section (info)->reloc_count * 4)) |
| 5888 | { |
| 5889 | error: |
| 5890 | (*_bfd_error_handler) |
| 5891 | ("LINKER BUG: .rofixup section size mismatch"); |
| 5892 | return FALSE; |
| 5893 | } |
| 5894 | |
| 5895 | hend = bfd_link_hash_lookup (info->hash, "__ROFIXUP_END__", |
| 5896 | FALSE, FALSE, TRUE); |
| 5897 | if (hend |
| 5898 | && (hend->type == bfd_link_hash_defined |
| 5899 | || hend->type == bfd_link_hash_defweak)) |
| 5900 | { |
| 5901 | bfd_vma value = |
| 5902 | frvfdpic_gotfixup_section (info)->output_section->vma |
| 5903 | + frvfdpic_gotfixup_section (info)->output_offset |
| 5904 | + frvfdpic_gotfixup_section (info)->size |
| 5905 | - hend->u.def.section->output_section->vma |
| 5906 | - hend->u.def.section->output_offset; |
| 5907 | BFD_ASSERT (hend->u.def.value == value); |
| 5908 | if (hend->u.def.value != value) |
| 5909 | goto error; |
| 5910 | } |
| 5911 | } |
| 5912 | } |
| 5913 | if (frvfdpic_pltrel_section (info)) |
| 5914 | { |
| 5915 | BFD_ASSERT (frvfdpic_pltrel_section (info)->size |
| 5916 | == (frvfdpic_pltrel_section (info)->reloc_count |
| 5917 | * sizeof (Elf32_External_Rel))); |
| 5918 | } |
| 5919 | |
| 5920 | |
| 5921 | if (elf_hash_table (info)->dynamic_sections_created) |
| 5922 | { |
| 5923 | Elf32_External_Dyn * dyncon; |
| 5924 | Elf32_External_Dyn * dynconend; |
| 5925 | |
| 5926 | sdyn = bfd_get_section_by_name (dynobj, ".dynamic"); |
| 5927 | |
| 5928 | BFD_ASSERT (sdyn != NULL); |
| 5929 | |
| 5930 | dyncon = (Elf32_External_Dyn *) sdyn->contents; |
| 5931 | dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size); |
| 5932 | |
| 5933 | for (; dyncon < dynconend; dyncon++) |
| 5934 | { |
| 5935 | Elf_Internal_Dyn dyn; |
| 5936 | |
| 5937 | bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn); |
| 5938 | |
| 5939 | switch (dyn.d_tag) |
| 5940 | { |
| 5941 | default: |
| 5942 | break; |
| 5943 | |
| 5944 | case DT_PLTGOT: |
| 5945 | dyn.d_un.d_ptr = frvfdpic_got_section (info)->output_section->vma |
| 5946 | + frvfdpic_got_section (info)->output_offset |
| 5947 | + frvfdpic_got_initial_offset (info); |
| 5948 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); |
| 5949 | break; |
| 5950 | |
| 5951 | case DT_JMPREL: |
| 5952 | dyn.d_un.d_ptr = frvfdpic_pltrel_section (info) |
| 5953 | ->output_section->vma |
| 5954 | + frvfdpic_pltrel_section (info)->output_offset; |
| 5955 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); |
| 5956 | break; |
| 5957 | |
| 5958 | case DT_PLTRELSZ: |
| 5959 | dyn.d_un.d_val = frvfdpic_pltrel_section (info)->size; |
| 5960 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); |
| 5961 | break; |
| 5962 | } |
| 5963 | } |
| 5964 | } |
| 5965 | |
| 5966 | return TRUE; |
| 5967 | } |
| 5968 | |
| 5969 | /* Adjust a symbol defined by a dynamic object and referenced by a |
| 5970 | regular object. */ |
| 5971 | |
| 5972 | static bfd_boolean |
| 5973 | elf32_frvfdpic_adjust_dynamic_symbol |
| 5974 | (struct bfd_link_info *info ATTRIBUTE_UNUSED, |
| 5975 | struct elf_link_hash_entry *h ATTRIBUTE_UNUSED) |
| 5976 | { |
| 5977 | bfd * dynobj; |
| 5978 | |
| 5979 | dynobj = elf_hash_table (info)->dynobj; |
| 5980 | |
| 5981 | /* Make sure we know what is going on here. */ |
| 5982 | BFD_ASSERT (dynobj != NULL |
| 5983 | && (h->u.weakdef != NULL |
| 5984 | || (h->def_dynamic |
| 5985 | && h->ref_regular |
| 5986 | && !h->def_regular))); |
| 5987 | |
| 5988 | /* If this is a weak symbol, and there is a real definition, the |
| 5989 | processor independent code will have arranged for us to see the |
| 5990 | real definition first, and we can just use the same value. */ |
| 5991 | if (h->u.weakdef != NULL) |
| 5992 | { |
| 5993 | BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined |
| 5994 | || h->u.weakdef->root.type == bfd_link_hash_defweak); |
| 5995 | h->root.u.def.section = h->u.weakdef->root.u.def.section; |
| 5996 | h->root.u.def.value = h->u.weakdef->root.u.def.value; |
| 5997 | } |
| 5998 | |
| 5999 | return TRUE; |
| 6000 | } |
| 6001 | |
| 6002 | /* Perform any actions needed for dynamic symbols. */ |
| 6003 | |
| 6004 | static bfd_boolean |
| 6005 | elf32_frvfdpic_finish_dynamic_symbol |
| 6006 | (bfd *output_bfd ATTRIBUTE_UNUSED, |
| 6007 | struct bfd_link_info *info ATTRIBUTE_UNUSED, |
| 6008 | struct elf_link_hash_entry *h ATTRIBUTE_UNUSED, |
| 6009 | Elf_Internal_Sym *sym ATTRIBUTE_UNUSED) |
| 6010 | { |
| 6011 | return TRUE; |
| 6012 | } |
| 6013 | |
| 6014 | /* Decide whether to attempt to turn absptr or lsda encodings in |
| 6015 | shared libraries into pcrel within the given input section. */ |
| 6016 | |
| 6017 | static bfd_boolean |
| 6018 | frvfdpic_elf_use_relative_eh_frame |
| 6019 | (bfd *input_bfd ATTRIBUTE_UNUSED, |
| 6020 | struct bfd_link_info *info ATTRIBUTE_UNUSED, |
| 6021 | asection *eh_frame_section ATTRIBUTE_UNUSED) |
| 6022 | { |
| 6023 | /* We can't use PC-relative encodings in FDPIC binaries, in general. */ |
| 6024 | return FALSE; |
| 6025 | } |
| 6026 | |
| 6027 | /* Adjust the contents of an eh_frame_hdr section before they're output. */ |
| 6028 | |
| 6029 | static bfd_byte |
| 6030 | frvfdpic_elf_encode_eh_address (bfd *abfd, |
| 6031 | struct bfd_link_info *info, |
| 6032 | asection *osec, bfd_vma offset, |
| 6033 | asection *loc_sec, bfd_vma loc_offset, |
| 6034 | bfd_vma *encoded) |
| 6035 | { |
| 6036 | struct elf_link_hash_entry *h; |
| 6037 | |
| 6038 | h = elf_hash_table (info)->hgot; |
| 6039 | BFD_ASSERT (h && h->root.type == bfd_link_hash_defined); |
| 6040 | |
| 6041 | if (! h || (_frvfdpic_osec_to_segment (abfd, osec) |
| 6042 | == _frvfdpic_osec_to_segment (abfd, loc_sec->output_section))) |
| 6043 | return _bfd_elf_encode_eh_address (abfd, info, osec, offset, |
| 6044 | loc_sec, loc_offset, encoded); |
| 6045 | |
| 6046 | BFD_ASSERT (_frvfdpic_osec_to_segment (abfd, osec) |
| 6047 | == (_frvfdpic_osec_to_segment |
| 6048 | (abfd, h->root.u.def.section->output_section))); |
| 6049 | |
| 6050 | *encoded = osec->vma + offset |
| 6051 | - (h->root.u.def.value |
| 6052 | + h->root.u.def.section->output_section->vma |
| 6053 | + h->root.u.def.section->output_offset); |
| 6054 | |
| 6055 | return DW_EH_PE_datarel | DW_EH_PE_sdata4; |
| 6056 | } |
| 6057 | |
| 6058 | /* Look through the relocs for a section during the first phase. |
| 6059 | |
| 6060 | Besides handling virtual table relocs for gc, we have to deal with |
| 6061 | all sorts of PIC-related relocations. We describe below the |
| 6062 | general plan on how to handle such relocations, even though we only |
| 6063 | collect information at this point, storing them in hash tables for |
| 6064 | perusal of later passes. |
| 6065 | |
| 6066 | 32 relocations are propagated to the linker output when creating |
| 6067 | position-independent output. LO16 and HI16 relocations are not |
| 6068 | supposed to be encountered in this case. |
| 6069 | |
| 6070 | LABEL16 should always be resolvable by the linker, since it's only |
| 6071 | used by branches. |
| 6072 | |
| 6073 | LABEL24, on the other hand, is used by calls. If it turns out that |
| 6074 | the target of a call is a dynamic symbol, a PLT entry must be |
| 6075 | created for it, which triggers the creation of a private function |
| 6076 | descriptor and, unless lazy binding is disabled, a lazy PLT entry. |
| 6077 | |
| 6078 | GPREL relocations require the referenced symbol to be in the same |
| 6079 | segment as _gp, but this can only be checked later. |
| 6080 | |
| 6081 | All GOT, GOTOFF and FUNCDESC relocations require a .got section to |
| 6082 | exist. LABEL24 might as well, since it may require a PLT entry, |
| 6083 | that will require a got. |
| 6084 | |
| 6085 | Non-FUNCDESC GOT relocations require a GOT entry to be created |
| 6086 | regardless of whether the symbol is dynamic. However, since a |
| 6087 | global symbol that turns out to not be exported may have the same |
| 6088 | address of a non-dynamic symbol, we don't assign GOT entries at |
| 6089 | this point, such that we can share them in this case. A relocation |
| 6090 | for the GOT entry always has to be created, be it to offset a |
| 6091 | private symbol by the section load address, be it to get the symbol |
| 6092 | resolved dynamically. |
| 6093 | |
| 6094 | FUNCDESC GOT relocations require a GOT entry to be created, and |
| 6095 | handled as if a FUNCDESC relocation was applied to the GOT entry in |
| 6096 | an object file. |
| 6097 | |
| 6098 | FUNCDESC relocations referencing a symbol that turns out to NOT be |
| 6099 | dynamic cause a private function descriptor to be created. The |
| 6100 | FUNCDESC relocation then decays to a 32 relocation that points at |
| 6101 | the private descriptor. If the symbol is dynamic, the FUNCDESC |
| 6102 | relocation is propagated to the linker output, such that the |
| 6103 | dynamic linker creates the canonical descriptor, pointing to the |
| 6104 | dynamically-resolved definition of the function. |
| 6105 | |
| 6106 | Non-FUNCDESC GOTOFF relocations must always refer to non-dynamic |
| 6107 | symbols that are assigned to the same segment as the GOT, but we |
| 6108 | can only check this later, after we know the complete set of |
| 6109 | symbols defined and/or exported. |
| 6110 | |
| 6111 | FUNCDESC GOTOFF relocations require a function descriptor to be |
| 6112 | created and, unless lazy binding is disabled or the symbol is not |
| 6113 | dynamic, a lazy PLT entry. Since we can't tell at this point |
| 6114 | whether a symbol is going to be dynamic, we have to decide later |
| 6115 | whether to create a lazy PLT entry or bind the descriptor directly |
| 6116 | to the private function. |
| 6117 | |
| 6118 | FUNCDESC_VALUE relocations are not supposed to be present in object |
| 6119 | files, but they may very well be simply propagated to the linker |
| 6120 | output, since they have no side effect. |
| 6121 | |
| 6122 | |
| 6123 | A function descriptor always requires a FUNCDESC_VALUE relocation. |
| 6124 | Whether it's in .plt.rel or not depends on whether lazy binding is |
| 6125 | enabled and on whether the referenced symbol is dynamic. |
| 6126 | |
| 6127 | The existence of a lazy PLT requires the resolverStub lazy PLT |
| 6128 | entry to be present. |
| 6129 | |
| 6130 | |
| 6131 | As for assignment of GOT, PLT and lazy PLT entries, and private |
| 6132 | descriptors, we might do them all sequentially, but we can do |
| 6133 | better than that. For example, we can place GOT entries and |
| 6134 | private function descriptors referenced using 12-bit operands |
| 6135 | closer to the PIC register value, such that these relocations don't |
| 6136 | overflow. Those that are only referenced with LO16 relocations |
| 6137 | could come next, but we may as well place PLT-required function |
| 6138 | descriptors in the 12-bit range to make them shorter. Symbols |
| 6139 | referenced with LO16/HI16 may come next, but we may place |
| 6140 | additional function descriptors in the 16-bit range if we can |
| 6141 | reliably tell that we've already placed entries that are ever |
| 6142 | referenced with only LO16. PLT entries are therefore generated as |
| 6143 | small as possible, while not introducing relocation overflows in |
| 6144 | GOT or FUNCDESC_GOTOFF relocations. Lazy PLT entries could be |
| 6145 | generated before or after PLT entries, but not intermingled with |
| 6146 | them, such that we can have more lazy PLT entries in range for a |
| 6147 | branch to the resolverStub. The resolverStub should be emitted at |
| 6148 | the most distant location from the first lazy PLT entry such that |
| 6149 | it's still in range for a branch, or closer, if there isn't a need |
| 6150 | for so many lazy PLT entries. Additional lazy PLT entries may be |
| 6151 | emitted after the resolverStub, as long as branches are still in |
| 6152 | range. If the branch goes out of range, longer lazy PLT entries |
| 6153 | are emitted. |
| 6154 | |
| 6155 | We could further optimize PLT and lazy PLT entries by giving them |
| 6156 | priority in assignment to closer-to-gr17 locations depending on the |
| 6157 | number of occurrences of references to them (assuming a function |
| 6158 | that's called more often is more important for performance, so its |
| 6159 | PLT entry should be faster), or taking hints from the compiler. |
| 6160 | Given infinite time and money... :-) */ |
| 6161 | |
| 6162 | static bfd_boolean |
| 6163 | elf32_frv_check_relocs (abfd, info, sec, relocs) |
| 6164 | bfd *abfd; |
| 6165 | struct bfd_link_info *info; |
| 6166 | asection *sec; |
| 6167 | const Elf_Internal_Rela *relocs; |
| 6168 | { |
| 6169 | Elf_Internal_Shdr *symtab_hdr; |
| 6170 | struct elf_link_hash_entry **sym_hashes; |
| 6171 | const Elf_Internal_Rela *rel; |
| 6172 | const Elf_Internal_Rela *rel_end; |
| 6173 | bfd *dynobj; |
| 6174 | struct frvfdpic_relocs_info *picrel; |
| 6175 | |
| 6176 | if (info->relocatable) |
| 6177 | return TRUE; |
| 6178 | |
| 6179 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; |
| 6180 | sym_hashes = elf_sym_hashes (abfd); |
| 6181 | |
| 6182 | dynobj = elf_hash_table (info)->dynobj; |
| 6183 | rel_end = relocs + sec->reloc_count; |
| 6184 | for (rel = relocs; rel < rel_end; rel++) |
| 6185 | { |
| 6186 | struct elf_link_hash_entry *h; |
| 6187 | unsigned long r_symndx; |
| 6188 | |
| 6189 | r_symndx = ELF32_R_SYM (rel->r_info); |
| 6190 | if (r_symndx < symtab_hdr->sh_info) |
| 6191 | h = NULL; |
| 6192 | else |
| 6193 | { |
| 6194 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; |
| 6195 | while (h->root.type == bfd_link_hash_indirect |
| 6196 | || h->root.type == bfd_link_hash_warning) |
| 6197 | h = (struct elf_link_hash_entry *) h->root.u.i.link; |
| 6198 | } |
| 6199 | |
| 6200 | switch (ELF32_R_TYPE (rel->r_info)) |
| 6201 | { |
| 6202 | case R_FRV_GETTLSOFF: |
| 6203 | case R_FRV_TLSDESC_VALUE: |
| 6204 | case R_FRV_GOTTLSDESC12: |
| 6205 | case R_FRV_GOTTLSDESCHI: |
| 6206 | case R_FRV_GOTTLSDESCLO: |
| 6207 | case R_FRV_GOTTLSOFF12: |
| 6208 | case R_FRV_GOTTLSOFFHI: |
| 6209 | case R_FRV_GOTTLSOFFLO: |
| 6210 | case R_FRV_TLSOFF: |
| 6211 | case R_FRV_GOT12: |
| 6212 | case R_FRV_GOTHI: |
| 6213 | case R_FRV_GOTLO: |
| 6214 | case R_FRV_FUNCDESC_GOT12: |
| 6215 | case R_FRV_FUNCDESC_GOTHI: |
| 6216 | case R_FRV_FUNCDESC_GOTLO: |
| 6217 | case R_FRV_GOTOFF12: |
| 6218 | case R_FRV_GOTOFFHI: |
| 6219 | case R_FRV_GOTOFFLO: |
| 6220 | case R_FRV_FUNCDESC_GOTOFF12: |
| 6221 | case R_FRV_FUNCDESC_GOTOFFHI: |
| 6222 | case R_FRV_FUNCDESC_GOTOFFLO: |
| 6223 | case R_FRV_FUNCDESC: |
| 6224 | case R_FRV_FUNCDESC_VALUE: |
| 6225 | case R_FRV_TLSMOFF12: |
| 6226 | case R_FRV_TLSMOFFHI: |
| 6227 | case R_FRV_TLSMOFFLO: |
| 6228 | case R_FRV_TLSMOFF: |
| 6229 | if (! IS_FDPIC (abfd)) |
| 6230 | goto bad_reloc; |
| 6231 | /* Fall through. */ |
| 6232 | case R_FRV_GPREL12: |
| 6233 | case R_FRV_GPRELU12: |
| 6234 | case R_FRV_GPRELHI: |
| 6235 | case R_FRV_GPRELLO: |
| 6236 | case R_FRV_LABEL24: |
| 6237 | case R_FRV_32: |
| 6238 | if (! dynobj) |
| 6239 | { |
| 6240 | elf_hash_table (info)->dynobj = dynobj = abfd; |
| 6241 | if (! _frv_create_got_section (abfd, info)) |
| 6242 | return FALSE; |
| 6243 | } |
| 6244 | if (! IS_FDPIC (abfd)) |
| 6245 | { |
| 6246 | picrel = NULL; |
| 6247 | break; |
| 6248 | } |
| 6249 | if (h != NULL) |
| 6250 | { |
| 6251 | if (h->dynindx == -1) |
| 6252 | switch (ELF_ST_VISIBILITY (h->other)) |
| 6253 | { |
| 6254 | case STV_INTERNAL: |
| 6255 | case STV_HIDDEN: |
| 6256 | break; |
| 6257 | default: |
| 6258 | bfd_elf_link_record_dynamic_symbol (info, h); |
| 6259 | break; |
| 6260 | } |
| 6261 | picrel |
| 6262 | = frvfdpic_relocs_info_for_global (frvfdpic_relocs_info (info), |
| 6263 | abfd, h, |
| 6264 | rel->r_addend, INSERT); |
| 6265 | } |
| 6266 | else |
| 6267 | picrel = frvfdpic_relocs_info_for_local (frvfdpic_relocs_info |
| 6268 | (info), abfd, r_symndx, |
| 6269 | rel->r_addend, INSERT); |
| 6270 | if (! picrel) |
| 6271 | return FALSE; |
| 6272 | break; |
| 6273 | |
| 6274 | default: |
| 6275 | picrel = NULL; |
| 6276 | break; |
| 6277 | } |
| 6278 | |
| 6279 | switch (ELF32_R_TYPE (rel->r_info)) |
| 6280 | { |
| 6281 | case R_FRV_LABEL24: |
| 6282 | if (IS_FDPIC (abfd)) |
| 6283 | picrel->call = 1; |
| 6284 | break; |
| 6285 | |
| 6286 | case R_FRV_FUNCDESC_VALUE: |
| 6287 | picrel->relocsfdv++; |
| 6288 | if (bfd_get_section_flags (abfd, sec) & SEC_ALLOC) |
| 6289 | picrel->relocs32--; |
| 6290 | /* Fall through. */ |
| 6291 | |
| 6292 | case R_FRV_32: |
| 6293 | if (! IS_FDPIC (abfd)) |
| 6294 | break; |
| 6295 | |
| 6296 | picrel->sym = 1; |
| 6297 | if (bfd_get_section_flags (abfd, sec) & SEC_ALLOC) |
| 6298 | picrel->relocs32++; |
| 6299 | break; |
| 6300 | |
| 6301 | case R_FRV_GOT12: |
| 6302 | picrel->got12 = 1; |
| 6303 | break; |
| 6304 | |
| 6305 | case R_FRV_GOTHI: |
| 6306 | case R_FRV_GOTLO: |
| 6307 | picrel->gothilo = 1; |
| 6308 | break; |
| 6309 | |
| 6310 | case R_FRV_FUNCDESC_GOT12: |
| 6311 | picrel->fdgot12 = 1; |
| 6312 | break; |
| 6313 | |
| 6314 | case R_FRV_FUNCDESC_GOTHI: |
| 6315 | case R_FRV_FUNCDESC_GOTLO: |
| 6316 | picrel->fdgothilo = 1; |
| 6317 | break; |
| 6318 | |
| 6319 | case R_FRV_GOTOFF12: |
| 6320 | case R_FRV_GOTOFFHI: |
| 6321 | case R_FRV_GOTOFFLO: |
| 6322 | picrel->gotoff = 1; |
| 6323 | break; |
| 6324 | |
| 6325 | case R_FRV_FUNCDESC_GOTOFF12: |
| 6326 | picrel->fdgoff12 = 1; |
| 6327 | break; |
| 6328 | |
| 6329 | case R_FRV_FUNCDESC_GOTOFFHI: |
| 6330 | case R_FRV_FUNCDESC_GOTOFFLO: |
| 6331 | picrel->fdgoffhilo = 1; |
| 6332 | break; |
| 6333 | |
| 6334 | case R_FRV_FUNCDESC: |
| 6335 | picrel->fd = 1; |
| 6336 | picrel->relocsfd++; |
| 6337 | break; |
| 6338 | |
| 6339 | case R_FRV_GETTLSOFF: |
| 6340 | picrel->tlsplt = 1; |
| 6341 | break; |
| 6342 | |
| 6343 | case R_FRV_TLSDESC_VALUE: |
| 6344 | picrel->relocstlsd++; |
| 6345 | goto bad_reloc; |
| 6346 | |
| 6347 | case R_FRV_GOTTLSDESC12: |
| 6348 | picrel->tlsdesc12 = 1; |
| 6349 | break; |
| 6350 | |
| 6351 | case R_FRV_GOTTLSDESCHI: |
| 6352 | case R_FRV_GOTTLSDESCLO: |
| 6353 | picrel->tlsdeschilo = 1; |
| 6354 | break; |
| 6355 | |
| 6356 | case R_FRV_TLSMOFF12: |
| 6357 | case R_FRV_TLSMOFFHI: |
| 6358 | case R_FRV_TLSMOFFLO: |
| 6359 | case R_FRV_TLSMOFF: |
| 6360 | break; |
| 6361 | |
| 6362 | case R_FRV_GOTTLSOFF12: |
| 6363 | picrel->tlsoff12 = 1; |
| 6364 | info->flags |= DF_STATIC_TLS; |
| 6365 | break; |
| 6366 | |
| 6367 | case R_FRV_GOTTLSOFFHI: |
| 6368 | case R_FRV_GOTTLSOFFLO: |
| 6369 | picrel->tlsoffhilo = 1; |
| 6370 | info->flags |= DF_STATIC_TLS; |
| 6371 | break; |
| 6372 | |
| 6373 | case R_FRV_TLSOFF: |
| 6374 | picrel->relocstlsoff++; |
| 6375 | info->flags |= DF_STATIC_TLS; |
| 6376 | goto bad_reloc; |
| 6377 | |
| 6378 | /* This relocation describes the C++ object vtable hierarchy. |
| 6379 | Reconstruct it for later use during GC. */ |
| 6380 | case R_FRV_GNU_VTINHERIT: |
| 6381 | if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset)) |
| 6382 | return FALSE; |
| 6383 | break; |
| 6384 | |
| 6385 | /* This relocation describes which C++ vtable entries are actually |
| 6386 | used. Record for later use during GC. */ |
| 6387 | case R_FRV_GNU_VTENTRY: |
| 6388 | BFD_ASSERT (h != NULL); |
| 6389 | if (h != NULL |
| 6390 | && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend)) |
| 6391 | return FALSE; |
| 6392 | break; |
| 6393 | |
| 6394 | case R_FRV_LABEL16: |
| 6395 | case R_FRV_LO16: |
| 6396 | case R_FRV_HI16: |
| 6397 | case R_FRV_GPREL12: |
| 6398 | case R_FRV_GPRELU12: |
| 6399 | case R_FRV_GPREL32: |
| 6400 | case R_FRV_GPRELHI: |
| 6401 | case R_FRV_GPRELLO: |
| 6402 | case R_FRV_TLSDESC_RELAX: |
| 6403 | case R_FRV_GETTLSOFF_RELAX: |
| 6404 | case R_FRV_TLSOFF_RELAX: |
| 6405 | break; |
| 6406 | |
| 6407 | default: |
| 6408 | bad_reloc: |
| 6409 | (*_bfd_error_handler) |
| 6410 | (_("%B: unsupported relocation type %i"), |
| 6411 | abfd, ELF32_R_TYPE (rel->r_info)); |
| 6412 | return FALSE; |
| 6413 | } |
| 6414 | } |
| 6415 | |
| 6416 | return TRUE; |
| 6417 | } |
| 6418 | |
| 6419 | \f |
| 6420 | /* Return the machine subcode from the ELF e_flags header. */ |
| 6421 | |
| 6422 | static int |
| 6423 | elf32_frv_machine (abfd) |
| 6424 | bfd *abfd; |
| 6425 | { |
| 6426 | switch (elf_elfheader (abfd)->e_flags & EF_FRV_CPU_MASK) |
| 6427 | { |
| 6428 | default: break; |
| 6429 | case EF_FRV_CPU_FR550: return bfd_mach_fr550; |
| 6430 | case EF_FRV_CPU_FR500: return bfd_mach_fr500; |
| 6431 | case EF_FRV_CPU_FR450: return bfd_mach_fr450; |
| 6432 | case EF_FRV_CPU_FR405: return bfd_mach_fr400; |
| 6433 | case EF_FRV_CPU_FR400: return bfd_mach_fr400; |
| 6434 | case EF_FRV_CPU_FR300: return bfd_mach_fr300; |
| 6435 | case EF_FRV_CPU_SIMPLE: return bfd_mach_frvsimple; |
| 6436 | case EF_FRV_CPU_TOMCAT: return bfd_mach_frvtomcat; |
| 6437 | } |
| 6438 | |
| 6439 | return bfd_mach_frv; |
| 6440 | } |
| 6441 | |
| 6442 | /* Set the right machine number for a FRV ELF file. */ |
| 6443 | |
| 6444 | static bfd_boolean |
| 6445 | elf32_frv_object_p (abfd) |
| 6446 | bfd *abfd; |
| 6447 | { |
| 6448 | bfd_default_set_arch_mach (abfd, bfd_arch_frv, elf32_frv_machine (abfd)); |
| 6449 | return (((elf_elfheader (abfd)->e_flags & EF_FRV_FDPIC) != 0) |
| 6450 | == (IS_FDPIC (abfd))); |
| 6451 | } |
| 6452 | \f |
| 6453 | /* Function to set the ELF flag bits. */ |
| 6454 | |
| 6455 | static bfd_boolean |
| 6456 | frv_elf_set_private_flags (abfd, flags) |
| 6457 | bfd *abfd; |
| 6458 | flagword flags; |
| 6459 | { |
| 6460 | elf_elfheader (abfd)->e_flags = flags; |
| 6461 | elf_flags_init (abfd) = TRUE; |
| 6462 | return TRUE; |
| 6463 | } |
| 6464 | |
| 6465 | /* Copy backend specific data from one object module to another. */ |
| 6466 | |
| 6467 | static bfd_boolean |
| 6468 | frv_elf_copy_private_bfd_data (ibfd, obfd) |
| 6469 | bfd *ibfd; |
| 6470 | bfd *obfd; |
| 6471 | { |
| 6472 | if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour |
| 6473 | || bfd_get_flavour (obfd) != bfd_target_elf_flavour) |
| 6474 | return TRUE; |
| 6475 | |
| 6476 | BFD_ASSERT (!elf_flags_init (obfd) |
| 6477 | || elf_elfheader (obfd)->e_flags == elf_elfheader (ibfd)->e_flags); |
| 6478 | |
| 6479 | elf_elfheader (obfd)->e_flags = elf_elfheader (ibfd)->e_flags; |
| 6480 | elf_flags_init (obfd) = TRUE; |
| 6481 | |
| 6482 | /* Copy object attributes. */ |
| 6483 | _bfd_elf_copy_obj_attributes (ibfd, obfd); |
| 6484 | |
| 6485 | return TRUE; |
| 6486 | } |
| 6487 | |
| 6488 | /* Return true if the architecture described by elf header flag |
| 6489 | EXTENSION is an extension of the architecture described by BASE. */ |
| 6490 | |
| 6491 | static bfd_boolean |
| 6492 | frv_elf_arch_extension_p (flagword base, flagword extension) |
| 6493 | { |
| 6494 | if (base == extension) |
| 6495 | return TRUE; |
| 6496 | |
| 6497 | /* CPU_GENERIC code can be merged with code for a specific |
| 6498 | architecture, in which case the result is marked as being |
| 6499 | for the specific architecture. Everything is therefore |
| 6500 | an extension of CPU_GENERIC. */ |
| 6501 | if (base == EF_FRV_CPU_GENERIC) |
| 6502 | return TRUE; |
| 6503 | |
| 6504 | if (extension == EF_FRV_CPU_FR450) |
| 6505 | if (base == EF_FRV_CPU_FR400 || base == EF_FRV_CPU_FR405) |
| 6506 | return TRUE; |
| 6507 | |
| 6508 | if (extension == EF_FRV_CPU_FR405) |
| 6509 | if (base == EF_FRV_CPU_FR400) |
| 6510 | return TRUE; |
| 6511 | |
| 6512 | return FALSE; |
| 6513 | } |
| 6514 | |
| 6515 | static bfd_boolean |
| 6516 | elf32_frvfdpic_copy_private_bfd_data (bfd *ibfd, bfd *obfd) |
| 6517 | { |
| 6518 | unsigned i; |
| 6519 | |
| 6520 | if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour |
| 6521 | || bfd_get_flavour (obfd) != bfd_target_elf_flavour) |
| 6522 | return TRUE; |
| 6523 | |
| 6524 | if (! frv_elf_copy_private_bfd_data (ibfd, obfd)) |
| 6525 | return FALSE; |
| 6526 | |
| 6527 | if (! elf_tdata (ibfd) || ! elf_tdata (ibfd)->phdr |
| 6528 | || ! elf_tdata (obfd) || ! elf_tdata (obfd)->phdr) |
| 6529 | return TRUE; |
| 6530 | |
| 6531 | /* Copy the stack size. */ |
| 6532 | for (i = 0; i < elf_elfheader (ibfd)->e_phnum; i++) |
| 6533 | if (elf_tdata (ibfd)->phdr[i].p_type == PT_GNU_STACK) |
| 6534 | { |
| 6535 | Elf_Internal_Phdr *iphdr = &elf_tdata (ibfd)->phdr[i]; |
| 6536 | |
| 6537 | for (i = 0; i < elf_elfheader (obfd)->e_phnum; i++) |
| 6538 | if (elf_tdata (obfd)->phdr[i].p_type == PT_GNU_STACK) |
| 6539 | { |
| 6540 | memcpy (&elf_tdata (obfd)->phdr[i], iphdr, sizeof (*iphdr)); |
| 6541 | |
| 6542 | /* Rewrite the phdrs, since we're only called after they |
| 6543 | were first written. */ |
| 6544 | if (bfd_seek (obfd, (bfd_signed_vma) get_elf_backend_data (obfd) |
| 6545 | ->s->sizeof_ehdr, SEEK_SET) != 0 |
| 6546 | || get_elf_backend_data (obfd)->s |
| 6547 | ->write_out_phdrs (obfd, elf_tdata (obfd)->phdr, |
| 6548 | elf_elfheader (obfd)->e_phnum) != 0) |
| 6549 | return FALSE; |
| 6550 | break; |
| 6551 | } |
| 6552 | |
| 6553 | break; |
| 6554 | } |
| 6555 | |
| 6556 | return TRUE; |
| 6557 | } |
| 6558 | |
| 6559 | /* Merge backend specific data from an object file to the output |
| 6560 | object file when linking. */ |
| 6561 | |
| 6562 | static bfd_boolean |
| 6563 | frv_elf_merge_private_bfd_data (ibfd, obfd) |
| 6564 | bfd *ibfd; |
| 6565 | bfd *obfd; |
| 6566 | { |
| 6567 | flagword old_flags, old_partial; |
| 6568 | flagword new_flags, new_partial; |
| 6569 | bfd_boolean error = FALSE; |
| 6570 | char new_opt[80]; |
| 6571 | char old_opt[80]; |
| 6572 | |
| 6573 | new_opt[0] = old_opt[0] = '\0'; |
| 6574 | new_flags = elf_elfheader (ibfd)->e_flags; |
| 6575 | old_flags = elf_elfheader (obfd)->e_flags; |
| 6576 | |
| 6577 | if (new_flags & EF_FRV_FDPIC) |
| 6578 | new_flags &= ~EF_FRV_PIC; |
| 6579 | |
| 6580 | #ifdef DEBUG |
| 6581 | (*_bfd_error_handler) ("old_flags = 0x%.8lx, new_flags = 0x%.8lx, init = %s, filename = %s", |
| 6582 | old_flags, new_flags, elf_flags_init (obfd) ? "yes" : "no", |
| 6583 | bfd_get_filename (ibfd)); |
| 6584 | #endif |
| 6585 | |
| 6586 | if (!elf_flags_init (obfd)) /* First call, no flags set. */ |
| 6587 | { |
| 6588 | elf_flags_init (obfd) = TRUE; |
| 6589 | old_flags = new_flags; |
| 6590 | } |
| 6591 | |
| 6592 | else if (new_flags == old_flags) /* Compatible flags are ok. */ |
| 6593 | ; |
| 6594 | |
| 6595 | else /* Possibly incompatible flags. */ |
| 6596 | { |
| 6597 | /* Warn if different # of gprs are used. Note, 0 means nothing is |
| 6598 | said about the size of gprs. */ |
| 6599 | new_partial = (new_flags & EF_FRV_GPR_MASK); |
| 6600 | old_partial = (old_flags & EF_FRV_GPR_MASK); |
| 6601 | if (new_partial == old_partial) |
| 6602 | ; |
| 6603 | |
| 6604 | else if (new_partial == 0) |
| 6605 | ; |
| 6606 | |
| 6607 | else if (old_partial == 0) |
| 6608 | old_flags |= new_partial; |
| 6609 | |
| 6610 | else |
| 6611 | { |
| 6612 | switch (new_partial) |
| 6613 | { |
| 6614 | default: strcat (new_opt, " -mgpr-??"); break; |
| 6615 | case EF_FRV_GPR_32: strcat (new_opt, " -mgpr-32"); break; |
| 6616 | case EF_FRV_GPR_64: strcat (new_opt, " -mgpr-64"); break; |
| 6617 | } |
| 6618 | |
| 6619 | switch (old_partial) |
| 6620 | { |
| 6621 | default: strcat (old_opt, " -mgpr-??"); break; |
| 6622 | case EF_FRV_GPR_32: strcat (old_opt, " -mgpr-32"); break; |
| 6623 | case EF_FRV_GPR_64: strcat (old_opt, " -mgpr-64"); break; |
| 6624 | } |
| 6625 | } |
| 6626 | |
| 6627 | /* Warn if different # of fprs are used. Note, 0 means nothing is |
| 6628 | said about the size of fprs. */ |
| 6629 | new_partial = (new_flags & EF_FRV_FPR_MASK); |
| 6630 | old_partial = (old_flags & EF_FRV_FPR_MASK); |
| 6631 | if (new_partial == old_partial) |
| 6632 | ; |
| 6633 | |
| 6634 | else if (new_partial == 0) |
| 6635 | ; |
| 6636 | |
| 6637 | else if (old_partial == 0) |
| 6638 | old_flags |= new_partial; |
| 6639 | |
| 6640 | else |
| 6641 | { |
| 6642 | switch (new_partial) |
| 6643 | { |
| 6644 | default: strcat (new_opt, " -mfpr-?"); break; |
| 6645 | case EF_FRV_FPR_32: strcat (new_opt, " -mfpr-32"); break; |
| 6646 | case EF_FRV_FPR_64: strcat (new_opt, " -mfpr-64"); break; |
| 6647 | case EF_FRV_FPR_NONE: strcat (new_opt, " -msoft-float"); break; |
| 6648 | } |
| 6649 | |
| 6650 | switch (old_partial) |
| 6651 | { |
| 6652 | default: strcat (old_opt, " -mfpr-?"); break; |
| 6653 | case EF_FRV_FPR_32: strcat (old_opt, " -mfpr-32"); break; |
| 6654 | case EF_FRV_FPR_64: strcat (old_opt, " -mfpr-64"); break; |
| 6655 | case EF_FRV_FPR_NONE: strcat (old_opt, " -msoft-float"); break; |
| 6656 | } |
| 6657 | } |
| 6658 | |
| 6659 | /* Warn if different dword support was used. Note, 0 means nothing is |
| 6660 | said about the dword support. */ |
| 6661 | new_partial = (new_flags & EF_FRV_DWORD_MASK); |
| 6662 | old_partial = (old_flags & EF_FRV_DWORD_MASK); |
| 6663 | if (new_partial == old_partial) |
| 6664 | ; |
| 6665 | |
| 6666 | else if (new_partial == 0) |
| 6667 | ; |
| 6668 | |
| 6669 | else if (old_partial == 0) |
| 6670 | old_flags |= new_partial; |
| 6671 | |
| 6672 | else |
| 6673 | { |
| 6674 | switch (new_partial) |
| 6675 | { |
| 6676 | default: strcat (new_opt, " -mdword-?"); break; |
| 6677 | case EF_FRV_DWORD_YES: strcat (new_opt, " -mdword"); break; |
| 6678 | case EF_FRV_DWORD_NO: strcat (new_opt, " -mno-dword"); break; |
| 6679 | } |
| 6680 | |
| 6681 | switch (old_partial) |
| 6682 | { |
| 6683 | default: strcat (old_opt, " -mdword-?"); break; |
| 6684 | case EF_FRV_DWORD_YES: strcat (old_opt, " -mdword"); break; |
| 6685 | case EF_FRV_DWORD_NO: strcat (old_opt, " -mno-dword"); break; |
| 6686 | } |
| 6687 | } |
| 6688 | |
| 6689 | /* Or in flags that accumulate (ie, if one module uses it, mark that the |
| 6690 | feature is used. */ |
| 6691 | old_flags |= new_flags & (EF_FRV_DOUBLE |
| 6692 | | EF_FRV_MEDIA |
| 6693 | | EF_FRV_MULADD |
| 6694 | | EF_FRV_NON_PIC_RELOCS); |
| 6695 | |
| 6696 | /* If any module was compiled without -G0, clear the G0 bit. */ |
| 6697 | old_flags = ((old_flags & ~ EF_FRV_G0) |
| 6698 | | (old_flags & new_flags & EF_FRV_G0)); |
| 6699 | |
| 6700 | /* If any module was compiled without -mnopack, clear the mnopack bit. */ |
| 6701 | old_flags = ((old_flags & ~ EF_FRV_NOPACK) |
| 6702 | | (old_flags & new_flags & EF_FRV_NOPACK)); |
| 6703 | |
| 6704 | /* We don't have to do anything if the pic flags are the same, or the new |
| 6705 | module(s) were compiled with -mlibrary-pic. */ |
| 6706 | new_partial = (new_flags & EF_FRV_PIC_FLAGS); |
| 6707 | old_partial = (old_flags & EF_FRV_PIC_FLAGS); |
| 6708 | if ((new_partial == old_partial) || ((new_partial & EF_FRV_LIBPIC) != 0)) |
| 6709 | ; |
| 6710 | |
| 6711 | /* If the old module(s) were compiled with -mlibrary-pic, copy in the pic |
| 6712 | flags if any from the new module. */ |
| 6713 | else if ((old_partial & EF_FRV_LIBPIC) != 0) |
| 6714 | old_flags = (old_flags & ~ EF_FRV_PIC_FLAGS) | new_partial; |
| 6715 | |
| 6716 | /* If we have mixtures of -fpic and -fPIC, or in both bits. */ |
| 6717 | else if (new_partial != 0 && old_partial != 0) |
| 6718 | old_flags |= new_partial; |
| 6719 | |
| 6720 | /* One module was compiled for pic and the other was not, see if we have |
| 6721 | had any relocations that are not pic-safe. */ |
| 6722 | else |
| 6723 | { |
| 6724 | if ((old_flags & EF_FRV_NON_PIC_RELOCS) == 0) |
| 6725 | old_flags |= new_partial; |
| 6726 | else |
| 6727 | { |
| 6728 | old_flags &= ~ EF_FRV_PIC_FLAGS; |
| 6729 | #ifndef FRV_NO_PIC_ERROR |
| 6730 | error = TRUE; |
| 6731 | (*_bfd_error_handler) |
| 6732 | (_("%s: compiled with %s and linked with modules that use non-pic relocations"), |
| 6733 | bfd_get_filename (ibfd), |
| 6734 | (new_flags & EF_FRV_BIGPIC) ? "-fPIC" : "-fpic"); |
| 6735 | #endif |
| 6736 | } |
| 6737 | } |
| 6738 | |
| 6739 | /* Warn if different cpu is used (allow a specific cpu to override |
| 6740 | the generic cpu). */ |
| 6741 | new_partial = (new_flags & EF_FRV_CPU_MASK); |
| 6742 | old_partial = (old_flags & EF_FRV_CPU_MASK); |
| 6743 | if (frv_elf_arch_extension_p (new_partial, old_partial)) |
| 6744 | ; |
| 6745 | |
| 6746 | else if (frv_elf_arch_extension_p (old_partial, new_partial)) |
| 6747 | old_flags = (old_flags & ~EF_FRV_CPU_MASK) | new_partial; |
| 6748 | |
| 6749 | else |
| 6750 | { |
| 6751 | switch (new_partial) |
| 6752 | { |
| 6753 | default: strcat (new_opt, " -mcpu=?"); break; |
| 6754 | case EF_FRV_CPU_GENERIC: strcat (new_opt, " -mcpu=frv"); break; |
| 6755 | case EF_FRV_CPU_SIMPLE: strcat (new_opt, " -mcpu=simple"); break; |
| 6756 | case EF_FRV_CPU_FR550: strcat (new_opt, " -mcpu=fr550"); break; |
| 6757 | case EF_FRV_CPU_FR500: strcat (new_opt, " -mcpu=fr500"); break; |
| 6758 | case EF_FRV_CPU_FR450: strcat (new_opt, " -mcpu=fr450"); break; |
| 6759 | case EF_FRV_CPU_FR405: strcat (new_opt, " -mcpu=fr405"); break; |
| 6760 | case EF_FRV_CPU_FR400: strcat (new_opt, " -mcpu=fr400"); break; |
| 6761 | case EF_FRV_CPU_FR300: strcat (new_opt, " -mcpu=fr300"); break; |
| 6762 | case EF_FRV_CPU_TOMCAT: strcat (new_opt, " -mcpu=tomcat"); break; |
| 6763 | } |
| 6764 | |
| 6765 | switch (old_partial) |
| 6766 | { |
| 6767 | default: strcat (old_opt, " -mcpu=?"); break; |
| 6768 | case EF_FRV_CPU_GENERIC: strcat (old_opt, " -mcpu=frv"); break; |
| 6769 | case EF_FRV_CPU_SIMPLE: strcat (old_opt, " -mcpu=simple"); break; |
| 6770 | case EF_FRV_CPU_FR550: strcat (old_opt, " -mcpu=fr550"); break; |
| 6771 | case EF_FRV_CPU_FR500: strcat (old_opt, " -mcpu=fr500"); break; |
| 6772 | case EF_FRV_CPU_FR450: strcat (old_opt, " -mcpu=fr450"); break; |
| 6773 | case EF_FRV_CPU_FR405: strcat (old_opt, " -mcpu=fr405"); break; |
| 6774 | case EF_FRV_CPU_FR400: strcat (old_opt, " -mcpu=fr400"); break; |
| 6775 | case EF_FRV_CPU_FR300: strcat (old_opt, " -mcpu=fr300"); break; |
| 6776 | case EF_FRV_CPU_TOMCAT: strcat (old_opt, " -mcpu=tomcat"); break; |
| 6777 | } |
| 6778 | } |
| 6779 | |
| 6780 | /* Print out any mismatches from above. */ |
| 6781 | if (new_opt[0]) |
| 6782 | { |
| 6783 | error = TRUE; |
| 6784 | (*_bfd_error_handler) |
| 6785 | (_("%s: compiled with %s and linked with modules compiled with %s"), |
| 6786 | bfd_get_filename (ibfd), new_opt, old_opt); |
| 6787 | } |
| 6788 | |
| 6789 | /* Warn about any other mismatches */ |
| 6790 | new_partial = (new_flags & ~ EF_FRV_ALL_FLAGS); |
| 6791 | old_partial = (old_flags & ~ EF_FRV_ALL_FLAGS); |
| 6792 | if (new_partial != old_partial) |
| 6793 | { |
| 6794 | old_flags |= new_partial; |
| 6795 | error = TRUE; |
| 6796 | (*_bfd_error_handler) |
| 6797 | (_("%s: uses different unknown e_flags (0x%lx) fields than previous modules (0x%lx)"), |
| 6798 | bfd_get_filename (ibfd), (long)new_partial, (long)old_partial); |
| 6799 | } |
| 6800 | } |
| 6801 | |
| 6802 | /* If the cpu is -mcpu=simple, then set the -mnopack bit. */ |
| 6803 | if ((old_flags & EF_FRV_CPU_MASK) == EF_FRV_CPU_SIMPLE) |
| 6804 | old_flags |= EF_FRV_NOPACK; |
| 6805 | |
| 6806 | /* Update the old flags now with changes made above. */ |
| 6807 | old_partial = elf_elfheader (obfd)->e_flags & EF_FRV_CPU_MASK; |
| 6808 | elf_elfheader (obfd)->e_flags = old_flags; |
| 6809 | if (old_partial != (old_flags & EF_FRV_CPU_MASK)) |
| 6810 | bfd_default_set_arch_mach (obfd, bfd_arch_frv, elf32_frv_machine (obfd)); |
| 6811 | |
| 6812 | if (((new_flags & EF_FRV_FDPIC) == 0) |
| 6813 | != (! IS_FDPIC (ibfd))) |
| 6814 | { |
| 6815 | error = TRUE; |
| 6816 | if (IS_FDPIC (obfd)) |
| 6817 | (*_bfd_error_handler) |
| 6818 | (_("%s: cannot link non-fdpic object file into fdpic executable"), |
| 6819 | bfd_get_filename (ibfd)); |
| 6820 | else |
| 6821 | (*_bfd_error_handler) |
| 6822 | (_("%s: cannot link fdpic object file into non-fdpic executable"), |
| 6823 | bfd_get_filename (ibfd)); |
| 6824 | } |
| 6825 | |
| 6826 | if (error) |
| 6827 | bfd_set_error (bfd_error_bad_value); |
| 6828 | |
| 6829 | return !error; |
| 6830 | } |
| 6831 | |
| 6832 | \f |
| 6833 | bfd_boolean |
| 6834 | frv_elf_print_private_bfd_data (abfd, ptr) |
| 6835 | bfd *abfd; |
| 6836 | PTR ptr; |
| 6837 | { |
| 6838 | FILE *file = (FILE *) ptr; |
| 6839 | flagword flags; |
| 6840 | |
| 6841 | BFD_ASSERT (abfd != NULL && ptr != NULL); |
| 6842 | |
| 6843 | /* Print normal ELF private data. */ |
| 6844 | _bfd_elf_print_private_bfd_data (abfd, ptr); |
| 6845 | |
| 6846 | flags = elf_elfheader (abfd)->e_flags; |
| 6847 | fprintf (file, _("private flags = 0x%lx:"), (unsigned long) flags); |
| 6848 | |
| 6849 | switch (flags & EF_FRV_CPU_MASK) |
| 6850 | { |
| 6851 | default: break; |
| 6852 | case EF_FRV_CPU_SIMPLE: fprintf (file, " -mcpu=simple"); break; |
| 6853 | case EF_FRV_CPU_FR550: fprintf (file, " -mcpu=fr550"); break; |
| 6854 | case EF_FRV_CPU_FR500: fprintf (file, " -mcpu=fr500"); break; |
| 6855 | case EF_FRV_CPU_FR450: fprintf (file, " -mcpu=fr450"); break; |
| 6856 | case EF_FRV_CPU_FR405: fprintf (file, " -mcpu=fr405"); break; |
| 6857 | case EF_FRV_CPU_FR400: fprintf (file, " -mcpu=fr400"); break; |
| 6858 | case EF_FRV_CPU_FR300: fprintf (file, " -mcpu=fr300"); break; |
| 6859 | case EF_FRV_CPU_TOMCAT: fprintf (file, " -mcpu=tomcat"); break; |
| 6860 | } |
| 6861 | |
| 6862 | switch (flags & EF_FRV_GPR_MASK) |
| 6863 | { |
| 6864 | default: break; |
| 6865 | case EF_FRV_GPR_32: fprintf (file, " -mgpr-32"); break; |
| 6866 | case EF_FRV_GPR_64: fprintf (file, " -mgpr-64"); break; |
| 6867 | } |
| 6868 | |
| 6869 | switch (flags & EF_FRV_FPR_MASK) |
| 6870 | { |
| 6871 | default: break; |
| 6872 | case EF_FRV_FPR_32: fprintf (file, " -mfpr-32"); break; |
| 6873 | case EF_FRV_FPR_64: fprintf (file, " -mfpr-64"); break; |
| 6874 | case EF_FRV_FPR_NONE: fprintf (file, " -msoft-float"); break; |
| 6875 | } |
| 6876 | |
| 6877 | switch (flags & EF_FRV_DWORD_MASK) |
| 6878 | { |
| 6879 | default: break; |
| 6880 | case EF_FRV_DWORD_YES: fprintf (file, " -mdword"); break; |
| 6881 | case EF_FRV_DWORD_NO: fprintf (file, " -mno-dword"); break; |
| 6882 | } |
| 6883 | |
| 6884 | if (flags & EF_FRV_DOUBLE) |
| 6885 | fprintf (file, " -mdouble"); |
| 6886 | |
| 6887 | if (flags & EF_FRV_MEDIA) |
| 6888 | fprintf (file, " -mmedia"); |
| 6889 | |
| 6890 | if (flags & EF_FRV_MULADD) |
| 6891 | fprintf (file, " -mmuladd"); |
| 6892 | |
| 6893 | if (flags & EF_FRV_PIC) |
| 6894 | fprintf (file, " -fpic"); |
| 6895 | |
| 6896 | if (flags & EF_FRV_BIGPIC) |
| 6897 | fprintf (file, " -fPIC"); |
| 6898 | |
| 6899 | if (flags & EF_FRV_LIBPIC) |
| 6900 | fprintf (file, " -mlibrary-pic"); |
| 6901 | |
| 6902 | if (flags & EF_FRV_FDPIC) |
| 6903 | fprintf (file, " -mfdpic"); |
| 6904 | |
| 6905 | if (flags & EF_FRV_NON_PIC_RELOCS) |
| 6906 | fprintf (file, " non-pic relocations"); |
| 6907 | |
| 6908 | if (flags & EF_FRV_G0) |
| 6909 | fprintf (file, " -G0"); |
| 6910 | |
| 6911 | fputc ('\n', file); |
| 6912 | return TRUE; |
| 6913 | } |
| 6914 | |
| 6915 | \f |
| 6916 | /* Support for core dump NOTE sections. */ |
| 6917 | |
| 6918 | static bfd_boolean |
| 6919 | elf32_frv_grok_prstatus (bfd *abfd, Elf_Internal_Note *note) |
| 6920 | { |
| 6921 | int offset; |
| 6922 | unsigned int raw_size; |
| 6923 | |
| 6924 | switch (note->descsz) |
| 6925 | { |
| 6926 | default: |
| 6927 | return FALSE; |
| 6928 | |
| 6929 | /* The Linux/FRV elf_prstatus struct is 268 bytes long. The other |
| 6930 | hardcoded offsets and sizes listed below (and contained within |
| 6931 | this lexical block) refer to fields in the target's elf_prstatus |
| 6932 | struct. */ |
| 6933 | case 268: |
| 6934 | /* `pr_cursig' is at offset 12. */ |
| 6935 | elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12); |
| 6936 | |
| 6937 | /* `pr_pid' is at offset 24. */ |
| 6938 | elf_tdata (abfd)->core_lwpid = bfd_get_32 (abfd, note->descdata + 24); |
| 6939 | |
| 6940 | /* `pr_reg' is at offset 72. */ |
| 6941 | offset = 72; |
| 6942 | |
| 6943 | /* Most grok_prstatus implementations set `raw_size' to the size |
| 6944 | of the pr_reg field. For Linux/FRV, we set `raw_size' to be |
| 6945 | the size of `pr_reg' plus the size of `pr_exec_fdpic_loadmap' |
| 6946 | and `pr_interp_fdpic_loadmap', both of which (by design) |
| 6947 | immediately follow `pr_reg'. This will allow these fields to |
| 6948 | be viewed by GDB as registers. |
| 6949 | |
| 6950 | `pr_reg' is 184 bytes long. `pr_exec_fdpic_loadmap' and |
| 6951 | `pr_interp_fdpic_loadmap' are 4 bytes each. */ |
| 6952 | raw_size = 184 + 4 + 4; |
| 6953 | |
| 6954 | break; |
| 6955 | } |
| 6956 | |
| 6957 | /* Make a ".reg/999" section. */ |
| 6958 | return _bfd_elfcore_make_pseudosection (abfd, ".reg", raw_size, |
| 6959 | note->descpos + offset); |
| 6960 | } |
| 6961 | |
| 6962 | static bfd_boolean |
| 6963 | elf32_frv_grok_psinfo (bfd *abfd, Elf_Internal_Note *note) |
| 6964 | { |
| 6965 | switch (note->descsz) |
| 6966 | { |
| 6967 | default: |
| 6968 | return FALSE; |
| 6969 | |
| 6970 | /* The Linux/FRV elf_prpsinfo struct is 124 bytes long. */ |
| 6971 | case 124: |
| 6972 | |
| 6973 | /* `pr_fname' is found at offset 28 and is 16 bytes long. */ |
| 6974 | elf_tdata (abfd)->core_program |
| 6975 | = _bfd_elfcore_strndup (abfd, note->descdata + 28, 16); |
| 6976 | |
| 6977 | /* `pr_psargs' is found at offset 44 and is 80 bytes long. */ |
| 6978 | elf_tdata (abfd)->core_command |
| 6979 | = _bfd_elfcore_strndup (abfd, note->descdata + 44, 80); |
| 6980 | } |
| 6981 | |
| 6982 | /* Note that for some reason, a spurious space is tacked |
| 6983 | onto the end of the args in some (at least one anyway) |
| 6984 | implementations, so strip it off if it exists. */ |
| 6985 | |
| 6986 | { |
| 6987 | char *command = elf_tdata (abfd)->core_command; |
| 6988 | int n = strlen (command); |
| 6989 | |
| 6990 | if (0 < n && command[n - 1] == ' ') |
| 6991 | command[n - 1] = '\0'; |
| 6992 | } |
| 6993 | |
| 6994 | return TRUE; |
| 6995 | } |
| 6996 | #define ELF_ARCH bfd_arch_frv |
| 6997 | #define ELF_TARGET_ID FRV_ELF_DATA |
| 6998 | #define ELF_MACHINE_CODE EM_CYGNUS_FRV |
| 6999 | #define ELF_MAXPAGESIZE 0x1000 |
| 7000 | |
| 7001 | #define TARGET_BIG_SYM bfd_elf32_frv_vec |
| 7002 | #define TARGET_BIG_NAME "elf32-frv" |
| 7003 | |
| 7004 | #define elf_info_to_howto frv_info_to_howto_rela |
| 7005 | #define elf_backend_relocate_section elf32_frv_relocate_section |
| 7006 | #define elf_backend_gc_mark_hook elf32_frv_gc_mark_hook |
| 7007 | #define elf_backend_check_relocs elf32_frv_check_relocs |
| 7008 | #define elf_backend_object_p elf32_frv_object_p |
| 7009 | #define elf_backend_add_symbol_hook elf32_frv_add_symbol_hook |
| 7010 | |
| 7011 | #define elf_backend_can_gc_sections 1 |
| 7012 | #define elf_backend_rela_normal 1 |
| 7013 | |
| 7014 | #define bfd_elf32_bfd_reloc_type_lookup frv_reloc_type_lookup |
| 7015 | #define bfd_elf32_bfd_reloc_name_lookup frv_reloc_name_lookup |
| 7016 | #define bfd_elf32_bfd_set_private_flags frv_elf_set_private_flags |
| 7017 | #define bfd_elf32_bfd_copy_private_bfd_data frv_elf_copy_private_bfd_data |
| 7018 | #define bfd_elf32_bfd_merge_private_bfd_data frv_elf_merge_private_bfd_data |
| 7019 | #define bfd_elf32_bfd_print_private_bfd_data frv_elf_print_private_bfd_data |
| 7020 | |
| 7021 | #define elf_backend_want_got_sym 1 |
| 7022 | #define elf_backend_got_header_size 0 |
| 7023 | #define elf_backend_want_got_plt 0 |
| 7024 | #define elf_backend_plt_readonly 1 |
| 7025 | #define elf_backend_want_plt_sym 0 |
| 7026 | #define elf_backend_plt_header_size 0 |
| 7027 | |
| 7028 | #define elf_backend_finish_dynamic_sections \ |
| 7029 | elf32_frv_finish_dynamic_sections |
| 7030 | |
| 7031 | #define elf_backend_grok_prstatus elf32_frv_grok_prstatus |
| 7032 | #define elf_backend_grok_psinfo elf32_frv_grok_psinfo |
| 7033 | |
| 7034 | #include "elf32-target.h" |
| 7035 | |
| 7036 | #undef ELF_MAXPAGESIZE |
| 7037 | #define ELF_MAXPAGESIZE 0x4000 |
| 7038 | |
| 7039 | #undef TARGET_BIG_SYM |
| 7040 | #define TARGET_BIG_SYM bfd_elf32_frvfdpic_vec |
| 7041 | #undef TARGET_BIG_NAME |
| 7042 | #define TARGET_BIG_NAME "elf32-frvfdpic" |
| 7043 | #undef elf32_bed |
| 7044 | #define elf32_bed elf32_frvfdpic_bed |
| 7045 | |
| 7046 | #undef elf_info_to_howto_rel |
| 7047 | #define elf_info_to_howto_rel frvfdpic_info_to_howto_rel |
| 7048 | |
| 7049 | #undef bfd_elf32_bfd_link_hash_table_create |
| 7050 | #define bfd_elf32_bfd_link_hash_table_create \ |
| 7051 | frvfdpic_elf_link_hash_table_create |
| 7052 | #undef elf_backend_always_size_sections |
| 7053 | #define elf_backend_always_size_sections \ |
| 7054 | elf32_frvfdpic_always_size_sections |
| 7055 | #undef elf_backend_modify_program_headers |
| 7056 | #define elf_backend_modify_program_headers \ |
| 7057 | elf32_frvfdpic_modify_program_headers |
| 7058 | #undef bfd_elf32_bfd_copy_private_bfd_data |
| 7059 | #define bfd_elf32_bfd_copy_private_bfd_data \ |
| 7060 | elf32_frvfdpic_copy_private_bfd_data |
| 7061 | |
| 7062 | #undef elf_backend_create_dynamic_sections |
| 7063 | #define elf_backend_create_dynamic_sections \ |
| 7064 | elf32_frvfdpic_create_dynamic_sections |
| 7065 | #undef elf_backend_adjust_dynamic_symbol |
| 7066 | #define elf_backend_adjust_dynamic_symbol \ |
| 7067 | elf32_frvfdpic_adjust_dynamic_symbol |
| 7068 | #undef elf_backend_size_dynamic_sections |
| 7069 | #define elf_backend_size_dynamic_sections \ |
| 7070 | elf32_frvfdpic_size_dynamic_sections |
| 7071 | #undef bfd_elf32_bfd_relax_section |
| 7072 | #define bfd_elf32_bfd_relax_section \ |
| 7073 | elf32_frvfdpic_relax_section |
| 7074 | #undef elf_backend_finish_dynamic_symbol |
| 7075 | #define elf_backend_finish_dynamic_symbol \ |
| 7076 | elf32_frvfdpic_finish_dynamic_symbol |
| 7077 | #undef elf_backend_finish_dynamic_sections |
| 7078 | #define elf_backend_finish_dynamic_sections \ |
| 7079 | elf32_frvfdpic_finish_dynamic_sections |
| 7080 | |
| 7081 | #undef elf_backend_discard_info |
| 7082 | #define elf_backend_discard_info \ |
| 7083 | frvfdpic_elf_discard_info |
| 7084 | #undef elf_backend_can_make_relative_eh_frame |
| 7085 | #define elf_backend_can_make_relative_eh_frame \ |
| 7086 | frvfdpic_elf_use_relative_eh_frame |
| 7087 | #undef elf_backend_can_make_lsda_relative_eh_frame |
| 7088 | #define elf_backend_can_make_lsda_relative_eh_frame \ |
| 7089 | frvfdpic_elf_use_relative_eh_frame |
| 7090 | #undef elf_backend_encode_eh_address |
| 7091 | #define elf_backend_encode_eh_address \ |
| 7092 | frvfdpic_elf_encode_eh_address |
| 7093 | |
| 7094 | #undef elf_backend_may_use_rel_p |
| 7095 | #define elf_backend_may_use_rel_p 1 |
| 7096 | #undef elf_backend_may_use_rela_p |
| 7097 | #define elf_backend_may_use_rela_p 1 |
| 7098 | /* We use REL for dynamic relocations only. */ |
| 7099 | #undef elf_backend_default_use_rela_p |
| 7100 | #define elf_backend_default_use_rela_p 1 |
| 7101 | |
| 7102 | #undef elf_backend_omit_section_dynsym |
| 7103 | #define elf_backend_omit_section_dynsym _frvfdpic_link_omit_section_dynsym |
| 7104 | |
| 7105 | #include "elf32-target.h" |