| 1 | /* FRV-specific support for 32-bit ELF. |
| 2 | Copyright 2002, 2003 Free Software Foundation, Inc. |
| 3 | |
| 4 | This file is part of BFD, the Binary File Descriptor library. |
| 5 | |
| 6 | This program is free software; you can redistribute it and/or modify |
| 7 | it under the terms of the GNU General Public License as published by |
| 8 | the Free Software Foundation; either version 2 of the License, or |
| 9 | (at your option) any later version. |
| 10 | |
| 11 | This program is distributed in the hope that it will be useful, |
| 12 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 14 | GNU General Public License for more details. |
| 15 | |
| 16 | You should have received a copy of the GNU General Public License |
| 17 | along with this program; if not, write to the Free Software |
| 18 | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ |
| 19 | |
| 20 | #include "bfd.h" |
| 21 | #include "sysdep.h" |
| 22 | #include "libbfd.h" |
| 23 | #include "elf-bfd.h" |
| 24 | #include "elf/frv.h" |
| 25 | #include "elf/dwarf2.h" |
| 26 | #include "hashtab.h" |
| 27 | |
| 28 | /* Forward declarations. */ |
| 29 | static bfd_reloc_status_type elf32_frv_relocate_lo16 |
| 30 | PARAMS ((bfd *, Elf_Internal_Rela *, bfd_byte *, bfd_vma)); |
| 31 | static bfd_reloc_status_type elf32_frv_relocate_hi16 |
| 32 | PARAMS ((bfd *, Elf_Internal_Rela *, bfd_byte *, bfd_vma)); |
| 33 | static bfd_reloc_status_type elf32_frv_relocate_label24 |
| 34 | PARAMS ((bfd *, asection *, Elf_Internal_Rela *, bfd_byte *, bfd_vma)); |
| 35 | static bfd_reloc_status_type elf32_frv_relocate_gprel12 |
| 36 | PARAMS ((struct bfd_link_info *, bfd *, asection *, Elf_Internal_Rela *, |
| 37 | bfd_byte *, bfd_vma)); |
| 38 | static bfd_reloc_status_type elf32_frv_relocate_gprelu12 |
| 39 | PARAMS ((struct bfd_link_info *, bfd *, asection *, Elf_Internal_Rela *, |
| 40 | bfd_byte *, bfd_vma)); |
| 41 | static bfd_reloc_status_type elf32_frv_relocate_gprello |
| 42 | PARAMS ((struct bfd_link_info *, bfd *, asection *, Elf_Internal_Rela *, |
| 43 | bfd_byte *, bfd_vma)); |
| 44 | static bfd_reloc_status_type elf32_frv_relocate_gprelhi |
| 45 | PARAMS ((struct bfd_link_info *, bfd *, asection *, Elf_Internal_Rela *, |
| 46 | bfd_byte *, bfd_vma)); |
| 47 | static reloc_howto_type *frv_reloc_type_lookup |
| 48 | PARAMS ((bfd *, bfd_reloc_code_real_type)); |
| 49 | static void frv_info_to_howto_rela |
| 50 | PARAMS ((bfd *, arelent *, Elf_Internal_Rela *)); |
| 51 | static bfd_boolean elf32_frv_relocate_section |
| 52 | PARAMS ((bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *, |
| 53 | Elf_Internal_Rela *, Elf_Internal_Sym *, asection **)); |
| 54 | static bfd_boolean elf32_frv_add_symbol_hook |
| 55 | PARAMS (( bfd *, struct bfd_link_info *, const Elf_Internal_Sym *, |
| 56 | const char **, flagword *, asection **, bfd_vma *)); |
| 57 | static bfd_reloc_status_type frv_final_link_relocate |
| 58 | PARAMS ((reloc_howto_type *, bfd *, asection *, bfd_byte *, |
| 59 | Elf_Internal_Rela *, bfd_vma)); |
| 60 | static bfd_boolean elf32_frv_gc_sweep_hook |
| 61 | PARAMS ((bfd *, struct bfd_link_info *, asection *, const |
| 62 | Elf_Internal_Rela *)); |
| 63 | static asection * elf32_frv_gc_mark_hook |
| 64 | PARAMS ((asection *, struct bfd_link_info *, Elf_Internal_Rela *, |
| 65 | struct elf_link_hash_entry *, Elf_Internal_Sym *)); |
| 66 | static bfd_boolean elf32_frv_check_relocs |
| 67 | PARAMS ((bfd *, struct bfd_link_info *, asection *, |
| 68 | const Elf_Internal_Rela *)); |
| 69 | static int elf32_frv_machine |
| 70 | PARAMS ((bfd *)); |
| 71 | static bfd_boolean elf32_frv_object_p |
| 72 | PARAMS ((bfd *)); |
| 73 | static bfd_boolean frv_elf_set_private_flags |
| 74 | PARAMS ((bfd *, flagword)); |
| 75 | static bfd_boolean frv_elf_copy_private_bfd_data |
| 76 | PARAMS ((bfd *, bfd *)); |
| 77 | static bfd_boolean frv_elf_merge_private_bfd_data |
| 78 | PARAMS ((bfd *, bfd *)); |
| 79 | static bfd_boolean frv_elf_print_private_bfd_data |
| 80 | PARAMS ((bfd *, PTR)); |
| 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 32-bit address of the canonical 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 | }; |
| 465 | |
| 466 | /* GNU extension to record C++ vtable hierarchy. */ |
| 467 | static reloc_howto_type elf32_frv_vtinherit_howto = |
| 468 | HOWTO (R_FRV_GNU_VTINHERIT, /* type */ |
| 469 | 0, /* rightshift */ |
| 470 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 471 | 0, /* bitsize */ |
| 472 | FALSE, /* pc_relative */ |
| 473 | 0, /* bitpos */ |
| 474 | complain_overflow_dont, /* complain_on_overflow */ |
| 475 | NULL, /* special_function */ |
| 476 | "R_FRV_GNU_VTINHERIT", /* name */ |
| 477 | FALSE, /* partial_inplace */ |
| 478 | 0, /* src_mask */ |
| 479 | 0, /* dst_mask */ |
| 480 | FALSE); /* pcrel_offset */ |
| 481 | |
| 482 | /* GNU extension to record C++ vtable member usage. */ |
| 483 | static reloc_howto_type elf32_frv_vtentry_howto = |
| 484 | HOWTO (R_FRV_GNU_VTENTRY, /* type */ |
| 485 | 0, /* rightshift */ |
| 486 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 487 | 0, /* bitsize */ |
| 488 | FALSE, /* pc_relative */ |
| 489 | 0, /* bitpos */ |
| 490 | complain_overflow_dont, /* complain_on_overflow */ |
| 491 | _bfd_elf_rel_vtable_reloc_fn, /* special_function */ |
| 492 | "R_FRV_GNU_VTENTRY", /* name */ |
| 493 | FALSE, /* partial_inplace */ |
| 494 | 0, /* src_mask */ |
| 495 | 0, /* dst_mask */ |
| 496 | FALSE); /* pcrel_offset */ |
| 497 | |
| 498 | /* The following 3 relocations are REL. The only difference to the |
| 499 | entries in the table above are that partial_inplace is TRUE. */ |
| 500 | static reloc_howto_type elf32_frv_rel_32_howto = |
| 501 | HOWTO (R_FRV_32, /* type */ |
| 502 | 0, /* rightshift */ |
| 503 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 504 | 32, /* bitsize */ |
| 505 | FALSE, /* pc_relative */ |
| 506 | 0, /* bitpos */ |
| 507 | complain_overflow_bitfield, /* complain_on_overflow */ |
| 508 | bfd_elf_generic_reloc, /* special_function */ |
| 509 | "R_FRV_32", /* name */ |
| 510 | TRUE, /* partial_inplace */ |
| 511 | 0xffffffff, /* src_mask */ |
| 512 | 0xffffffff, /* dst_mask */ |
| 513 | FALSE); /* pcrel_offset */ |
| 514 | |
| 515 | static reloc_howto_type elf32_frv_rel_funcdesc_howto = |
| 516 | HOWTO (R_FRV_FUNCDESC, /* type */ |
| 517 | 0, /* rightshift */ |
| 518 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 519 | 32, /* bitsize */ |
| 520 | FALSE, /* pc_relative */ |
| 521 | 0, /* bitpos */ |
| 522 | complain_overflow_bitfield, /* complain_on_overflow */ |
| 523 | bfd_elf_generic_reloc, /* special_function */ |
| 524 | "R_FRV_FUNCDESC", /* name */ |
| 525 | TRUE, /* partial_inplace */ |
| 526 | 0xffffffff, /* src_mask */ |
| 527 | 0xffffffff, /* dst_mask */ |
| 528 | FALSE); /* pcrel_offset */ |
| 529 | |
| 530 | static reloc_howto_type elf32_frv_rel_funcdesc_value_howto = |
| 531 | HOWTO (R_FRV_FUNCDESC_VALUE, /* type */ |
| 532 | 0, /* rightshift */ |
| 533 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 534 | 64, /* bitsize */ |
| 535 | FALSE, /* pc_relative */ |
| 536 | 0, /* bitpos */ |
| 537 | complain_overflow_bitfield, /* complain_on_overflow */ |
| 538 | bfd_elf_generic_reloc, /* special_function */ |
| 539 | "R_FRV_FUNCDESC_VALUE", /* name */ |
| 540 | TRUE, /* partial_inplace */ |
| 541 | 0xffffffff, /* src_mask */ |
| 542 | 0xffffffff, /* dst_mask */ |
| 543 | FALSE); /* pcrel_offset */ |
| 544 | |
| 545 | \f |
| 546 | /* Map BFD reloc types to FRV ELF reloc types. */ |
| 547 | #if 0 |
| 548 | struct frv_reloc_map |
| 549 | { |
| 550 | unsigned int bfd_reloc_val; |
| 551 | unsigned int frv_reloc_val; |
| 552 | }; |
| 553 | |
| 554 | static const struct frv_reloc_map frv_reloc_map [] = |
| 555 | { |
| 556 | { BFD_RELOC_NONE, R_FRV_NONE }, |
| 557 | { BFD_RELOC_32, R_FRV_32 }, |
| 558 | { BFD_RELOC_FRV_LABEL16, R_FRV_LABEL16 }, |
| 559 | { BFD_RELOC_FRV_LABEL24, R_FRV_LABEL24 }, |
| 560 | { BFD_RELOC_FRV_LO16, R_FRV_LO16 }, |
| 561 | { BFD_RELOC_FRV_HI16, R_FRV_HI16 }, |
| 562 | { BFD_RELOC_FRV_GPREL12, R_FRV_GPREL12 }, |
| 563 | { BFD_RELOC_FRV_GPRELU12, R_FRV_GPRELU12 }, |
| 564 | { BFD_RELOC_FRV_GPREL32, R_FRV_GPREL32 }, |
| 565 | { BFD_RELOC_FRV_GPRELHI, R_FRV_GPRELHI }, |
| 566 | { BFD_RELOC_FRV_GPRELLO, R_FRV_GPRELLO }, |
| 567 | { BFD_RELOC_FRV_GOT12, R_FRV_GOT12 }, |
| 568 | { BFD_RELOC_FRV_GOTHI, R_FRV_GOTHI }, |
| 569 | { BFD_RELOC_FRV_GOTLO, R_FRV_GOTLO }, |
| 570 | { BFD_RELOC_FRV_FUNCDESC, R_FRV_FUNCDESC }, |
| 571 | { BFD_RELOC_FRV_FUNCDESC_GOT12, R_FRV_FUNCDESC_GOT12 }, |
| 572 | { BFD_RELOC_FRV_FUNCDESC_GOTHI, R_FRV_FUNCDESC_GOTHI }, |
| 573 | { BFD_RELOC_FRV_FUNCDESC_GOTLO, R_FRV_FUNCDESC_GOTLO }, |
| 574 | { BFD_RELOC_FRV_FUNCDESC_VALUE, R_FRV_FUNCDESC_VALUE }, |
| 575 | { BFD_RELOC_FRV_FUNCDESC_GOTOFF12, R_FRV_FUNCDESC_GOTOFF12 }, |
| 576 | { BFD_RELOC_FRV_FUNCDESC_GOTOFFHI, R_FRV_FUNCDESC_GOTOFFHI }, |
| 577 | { BFD_RELOC_FRV_FUNCDESC_GOTOFFLO, R_FRV_FUNCDESC_GOTOFFLO }, |
| 578 | { BFD_RELOC_FRV_GOTOFF12, R_FRV_GOTOFF12 }, |
| 579 | { BFD_RELOC_FRV_GOTOFFHI, R_FRV_GOTOFFHI }, |
| 580 | { BFD_RELOC_FRV_GOTOFFLO, R_FRV_GOTOFFLO }, |
| 581 | { BFD_RELOC_VTABLE_INHERIT, R_FRV_GNU_VTINHERIT }, |
| 582 | { BFD_RELOC_VTABLE_ENTRY, R_FRV_GNU_VTENTRY }, |
| 583 | }; |
| 584 | #endif |
| 585 | |
| 586 | |
| 587 | /* An extension of the elf hash table data structure, containing some |
| 588 | additional FRV-specific data. */ |
| 589 | struct frv_elf_link_hash_table |
| 590 | { |
| 591 | struct elf_link_hash_table elf; |
| 592 | |
| 593 | /* A pointer to the .got section. */ |
| 594 | asection *sgot; |
| 595 | /* A pointer to the .rel.got section. */ |
| 596 | asection *sgotrel; |
| 597 | /* A pointer to the .rofixup section. */ |
| 598 | asection *sgotfixup; |
| 599 | /* A pointer to the .plt section. */ |
| 600 | asection *splt; |
| 601 | /* A pointer to the .rel.plt section. */ |
| 602 | asection *spltrel; |
| 603 | /* GOT base offset. */ |
| 604 | bfd_vma got0; |
| 605 | /* Location of the first non-lazy PLT entry, i.e., the number of |
| 606 | bytes taken by lazy PLT entries. */ |
| 607 | bfd_vma plt0; |
| 608 | /* A hash table holding information about which symbols were |
| 609 | referenced with which PIC-related relocations. */ |
| 610 | struct htab *relocs_info; |
| 611 | }; |
| 612 | |
| 613 | /* Get the FRV ELF linker hash table from a link_info structure. */ |
| 614 | |
| 615 | #define frv_hash_table(info) \ |
| 616 | ((struct frv_elf_link_hash_table *) ((info)->hash)) |
| 617 | |
| 618 | #define frv_got_section(info) \ |
| 619 | (frv_hash_table (info)->sgot) |
| 620 | #define frv_gotrel_section(info) \ |
| 621 | (frv_hash_table (info)->sgotrel) |
| 622 | #define frv_gotfixup_section(info) \ |
| 623 | (frv_hash_table (info)->sgotfixup) |
| 624 | #define frv_plt_section(info) \ |
| 625 | (frv_hash_table (info)->splt) |
| 626 | #define frv_pltrel_section(info) \ |
| 627 | (frv_hash_table (info)->spltrel) |
| 628 | #define frv_relocs_info(info) \ |
| 629 | (frv_hash_table (info)->relocs_info) |
| 630 | #define frv_got_initial_offset(info) \ |
| 631 | (frv_hash_table (info)->got0) |
| 632 | #define frv_plt_initial_offset(info) \ |
| 633 | (frv_hash_table (info)->plt0) |
| 634 | |
| 635 | /* Create an FRV ELF linker hash table. */ |
| 636 | |
| 637 | static struct bfd_link_hash_table * |
| 638 | frv_elf_link_hash_table_create (bfd *abfd) |
| 639 | { |
| 640 | struct frv_elf_link_hash_table *ret; |
| 641 | bfd_size_type amt = sizeof (struct frv_elf_link_hash_table); |
| 642 | |
| 643 | ret = bfd_zalloc (abfd, amt); |
| 644 | if (ret == NULL) |
| 645 | return NULL; |
| 646 | |
| 647 | if (! _bfd_elf_link_hash_table_init (&ret->elf, abfd, |
| 648 | _bfd_elf_link_hash_newfunc)) |
| 649 | { |
| 650 | free (ret); |
| 651 | return NULL; |
| 652 | } |
| 653 | |
| 654 | return &ret->elf.root; |
| 655 | } |
| 656 | |
| 657 | /* Decide whether a reference to a symbol can be resolved locally or |
| 658 | not. If the symbol is protected, we want the local address, but |
| 659 | its function descriptor must be assigned by the dynamic linker. */ |
| 660 | #define FRV_SYM_LOCAL(INFO, H) \ |
| 661 | (_bfd_elf_symbol_refs_local_p ((H), (INFO), 1) \ |
| 662 | || ! elf_hash_table (INFO)->dynamic_sections_created \ |
| 663 | || (/* The condition below is an ugly hack to get .scommon data to |
| 664 | be regarded as local. For some reason the |
| 665 | ELF_LINK_HASH_DEF_REGULAR bit is not set on such common |
| 666 | symbols, and the SEC_IS_COMMON bit is not set any longer |
| 667 | when we need to perform this test. Hopefully this |
| 668 | approximation is good enough. */ \ |
| 669 | ((H)->root.type == bfd_link_hash_defined \ |
| 670 | || (H)->root.type == bfd_link_hash_defweak) \ |
| 671 | && (H)->root.u.def.section->output_section \ |
| 672 | && ((H)->root.u.def.section->flags & SEC_LINKER_CREATED))) |
| 673 | #define FRV_FUNCDESC_LOCAL(INFO, H) \ |
| 674 | ((H)->dynindx == -1 || ! elf_hash_table (INFO)->dynamic_sections_created) |
| 675 | |
| 676 | /* This structure collects information on what kind of GOT, PLT or |
| 677 | function descriptors are required by relocations that reference a |
| 678 | certain symbol. */ |
| 679 | struct frv_pic_relocs_info |
| 680 | { |
| 681 | /* The index of the symbol, as stored in the relocation r_info, if |
| 682 | we have a local symbol; -1 otherwise. */ |
| 683 | long symndx; |
| 684 | union |
| 685 | { |
| 686 | /* The input bfd in which the symbol is defined, if it's a local |
| 687 | symbol. */ |
| 688 | bfd *abfd; |
| 689 | /* If symndx == -1, the hash table entry corresponding to a global |
| 690 | symbol (even if it turns out to bind locally, in which case it |
| 691 | should ideally be replaced with section's symndx + addend). */ |
| 692 | struct elf_link_hash_entry *h; |
| 693 | } d; |
| 694 | /* The addend of the relocation that references the symbol. */ |
| 695 | bfd_vma addend; |
| 696 | |
| 697 | /* The fields above are used to identify an entry. The fields below |
| 698 | contain information on how an entry is used and, later on, which |
| 699 | locations it was assigned. */ |
| 700 | /* The following 3 fields record whether the symbol+addend above was |
| 701 | ever referenced with a GOT relocation. The 12 suffix indicates a |
| 702 | GOT12 relocation; los is used for GOTLO relocations that are not |
| 703 | matched by a GOTHI relocation; hilo is used for GOTLO/GOTHI |
| 704 | pairs. */ |
| 705 | unsigned got12:1; |
| 706 | unsigned gotlos:1; |
| 707 | unsigned gothilo:1; |
| 708 | /* Whether a FUNCDESC relocation references symbol+addend. */ |
| 709 | unsigned fd:1; |
| 710 | /* Whether a FUNCDESC_GOT relocation references symbol+addend. */ |
| 711 | unsigned fdgot12:1; |
| 712 | unsigned fdgotlos:1; |
| 713 | unsigned fdgothilo:1; |
| 714 | /* Whether a FUNCDESC_GOTOFF relocation references symbol+addend. */ |
| 715 | unsigned fdgoff12:1; |
| 716 | unsigned fdgofflos:1; |
| 717 | unsigned fdgoffhilo:1; |
| 718 | /* Whether symbol+addend is referenced with GOTOFF12, GOTOFFLO or |
| 719 | GOTOFFHI relocations. The addend doesn't really matter, since we |
| 720 | envision that this will only be used to check whether the symbol |
| 721 | is mapped to the same segment as the got. */ |
| 722 | unsigned gotoff:1; |
| 723 | /* Whether symbol+addend is referenced by a LABEL24 relocation. */ |
| 724 | unsigned call:1; |
| 725 | /* Whether symbol+addend is referenced by a 32 or FUNCDESC_VALUE |
| 726 | relocation. */ |
| 727 | unsigned sym:1; |
| 728 | /* Whether we need a PLT entry for a symbol. Should be implied by |
| 729 | something like: |
| 730 | (call && symndx == -1 && ! FRV_SYM_LOCAL (info, d.h)) */ |
| 731 | unsigned plt:1; |
| 732 | /* Whether a function descriptor should be created in this link unit |
| 733 | for symbol+addend. Should be implied by something like: |
| 734 | (plt || fdgotoff12 || fdgotofflos || fdgotofflohi |
| 735 | || ((fd || fdgot12 || fdgotlos || fdgothilo) |
| 736 | && (symndx != -1 || FRV_FUNCDESC_LOCAL (info, d.h)))) */ |
| 737 | unsigned privfd:1; |
| 738 | /* Whether a lazy PLT entry is needed for this symbol+addend. |
| 739 | Should be implied by something like: |
| 740 | (privfd && symndx == -1 && ! FRV_SYM_LOCAL (info, d.h) |
| 741 | && ! (info->flags & DF_BIND_NOW)) */ |
| 742 | unsigned lazyplt:1; |
| 743 | /* Whether we've already emitted GOT relocations and PLT entries as |
| 744 | needed for this symbol. */ |
| 745 | unsigned done:1; |
| 746 | |
| 747 | /* The number of R_FRV_32, R_FRV_FUNCDESC and R_FRV_FUNCDESC_VALUE |
| 748 | relocations referencing the symbol. */ |
| 749 | unsigned relocs32, relocsfd, relocsfdv; |
| 750 | |
| 751 | /* The number of .rofixups entries and dynamic relocations allocated |
| 752 | for this symbol, minus any that might have already been used. */ |
| 753 | unsigned fixups, dynrelocs; |
| 754 | |
| 755 | /* The offsets of the GOT entries assigned to symbol+addend, to the |
| 756 | function descriptor's address, and to a function descriptor, |
| 757 | respectively. Should be zero if unassigned. The offsets are |
| 758 | counted from the value that will be assigned to the PIC register, |
| 759 | not from the beginning of the .got section. */ |
| 760 | bfd_signed_vma got_entry, fdgot_entry, fd_entry; |
| 761 | /* The offsets of the PLT entries assigned to symbol+addend, |
| 762 | non-lazy and lazy, respectively. If unassigned, should be |
| 763 | (bfd_vma)-1. */ |
| 764 | bfd_vma plt_entry, lzplt_entry; |
| 765 | }; |
| 766 | |
| 767 | /* Compute a hash with the key fields of an frv_pic_relocs_info entry. */ |
| 768 | static hashval_t |
| 769 | frv_pic_relocs_info_hash (const void *entry_) |
| 770 | { |
| 771 | const struct frv_pic_relocs_info *entry = entry_; |
| 772 | |
| 773 | return (entry->symndx == -1 |
| 774 | ? entry->d.h->root.root.hash |
| 775 | : entry->symndx + entry->d.abfd->id * 257) + entry->addend; |
| 776 | } |
| 777 | |
| 778 | /* Test whether the key fields of two frv_pic_relocs_info entries are |
| 779 | identical. */ |
| 780 | static int |
| 781 | frv_pic_relocs_info_eq (const void *entry1, const void *entry2) |
| 782 | { |
| 783 | const struct frv_pic_relocs_info *e1 = entry1; |
| 784 | const struct frv_pic_relocs_info *e2 = entry2; |
| 785 | |
| 786 | return e1->symndx == e2->symndx && e1->addend == e2->addend |
| 787 | && (e1->symndx == -1 ? e1->d.h == e2->d.h : e1->d.abfd == e2->d.abfd); |
| 788 | } |
| 789 | |
| 790 | /* Find or create an entry in a hash table HT that matches the key |
| 791 | fields of the given ENTRY. If it's not found, memory for a new |
| 792 | entry is allocated in ABFD's obstack. */ |
| 793 | static struct frv_pic_relocs_info * |
| 794 | frv_pic_relocs_info_find (struct htab *ht, |
| 795 | bfd *abfd, |
| 796 | const struct frv_pic_relocs_info *entry, |
| 797 | enum insert_option insert) |
| 798 | { |
| 799 | struct frv_pic_relocs_info **loc = |
| 800 | (struct frv_pic_relocs_info **) htab_find_slot (ht, entry, insert); |
| 801 | |
| 802 | if (! loc) |
| 803 | return NULL; |
| 804 | |
| 805 | if (*loc) |
| 806 | return *loc; |
| 807 | |
| 808 | *loc = bfd_zalloc (abfd, sizeof (**loc)); |
| 809 | |
| 810 | if (! *loc) |
| 811 | return *loc; |
| 812 | |
| 813 | (*loc)->symndx = entry->symndx; |
| 814 | (*loc)->d = entry->d; |
| 815 | (*loc)->addend = entry->addend; |
| 816 | (*loc)->plt_entry = (bfd_vma)-1; |
| 817 | (*loc)->lzplt_entry = (bfd_vma)-1; |
| 818 | |
| 819 | return *loc; |
| 820 | } |
| 821 | |
| 822 | /* Obtain the address of the entry in HT associated with H's symbol + |
| 823 | addend, creating a new entry if none existed. ABFD is only used |
| 824 | for memory allocation purposes. */ |
| 825 | inline static struct frv_pic_relocs_info * |
| 826 | frv_pic_relocs_info_for_global (struct htab *ht, |
| 827 | bfd *abfd, |
| 828 | struct elf_link_hash_entry *h, |
| 829 | bfd_vma addend, |
| 830 | enum insert_option insert) |
| 831 | { |
| 832 | struct frv_pic_relocs_info entry; |
| 833 | |
| 834 | entry.symndx = -1; |
| 835 | entry.d.h = h; |
| 836 | entry.addend = addend; |
| 837 | |
| 838 | return frv_pic_relocs_info_find (ht, abfd, &entry, insert); |
| 839 | } |
| 840 | |
| 841 | /* Obtain the address of the entry in HT associated with the SYMNDXth |
| 842 | local symbol of the input bfd ABFD, plus the addend, creating a new |
| 843 | entry if none existed. */ |
| 844 | inline static struct frv_pic_relocs_info * |
| 845 | frv_pic_relocs_info_for_local (struct htab *ht, |
| 846 | bfd *abfd, |
| 847 | long symndx, |
| 848 | bfd_vma addend, |
| 849 | enum insert_option insert) |
| 850 | { |
| 851 | struct frv_pic_relocs_info entry; |
| 852 | |
| 853 | entry.symndx = symndx; |
| 854 | entry.d.abfd = abfd; |
| 855 | entry.addend = addend; |
| 856 | |
| 857 | return frv_pic_relocs_info_find (ht, abfd, &entry, insert); |
| 858 | } |
| 859 | |
| 860 | /* Merge fields set by check_relocs() of two entries that end up being |
| 861 | mapped to the same (presumably global) symbol. */ |
| 862 | |
| 863 | inline static void |
| 864 | frv_pic_merge_early_relocs_info (struct frv_pic_relocs_info *e2, |
| 865 | struct frv_pic_relocs_info const *e1) |
| 866 | { |
| 867 | e2->got12 |= e1->got12; |
| 868 | e2->gotlos |= e1->gotlos; |
| 869 | e2->gothilo |= e1->gothilo; |
| 870 | e2->fd |= e1->fd; |
| 871 | e2->fdgot12 |= e1->fdgot12; |
| 872 | e2->fdgotlos |= e1->fdgotlos; |
| 873 | e2->fdgothilo |= e1->fdgothilo; |
| 874 | e2->fdgoff12 |= e1->fdgoff12; |
| 875 | e2->fdgofflos |= e1->fdgofflos; |
| 876 | e2->fdgoffhilo |= e1->fdgoffhilo; |
| 877 | e2->gotoff |= e1->gotoff; |
| 878 | e2->call |= e1->call; |
| 879 | e2->sym |= e1->sym; |
| 880 | |
| 881 | #if 0 |
| 882 | /* These are set in _frv_count_got_plt_entries() or later, and this |
| 883 | function is only called in _frv_resolve_final_relocs_info(), that |
| 884 | runs just before it, so we don't have to worry about the fields |
| 885 | below. */ |
| 886 | |
| 887 | e2->plt |= e1->plt; |
| 888 | e2->privfd |= e1->privfd; |
| 889 | e2->lazyplt |= e1->lazyplt; |
| 890 | e2->done |= e1->done; |
| 891 | |
| 892 | e2->relocs32 += e1->relocs32; |
| 893 | e2->relocsfd += e1->relocsfd; |
| 894 | e2->relocsfdv += e1->relocsfdv; |
| 895 | e2->fixups += e1->fixups; |
| 896 | e2->dynrelocs += e1->dynrelocs; |
| 897 | |
| 898 | if (abs (e1->got_entry) < abs (e2->got_entry)) |
| 899 | e2->got_entry = e1->got_entry; |
| 900 | if (abs (e1->fdgot_entry) < abs (e2->fdgot_entry)) |
| 901 | e2->fdgot_entry = e1->fdgot_entry; |
| 902 | if (abs (e1->fd_entry) < abs (e2->fd_entry)) |
| 903 | e2->fd_entry = e1->fd_entry; |
| 904 | |
| 905 | if (e1->plt_entry < e2->plt_entry) |
| 906 | e2->plt_entry = e1->plt_entry; |
| 907 | if (e1->lzplt_entry < e2->lzplt_entry) |
| 908 | e2->lzplt_entry = e1->lzplt_entry; |
| 909 | #endif |
| 910 | } |
| 911 | |
| 912 | /* Every block of 65535 lazy PLT entries shares a single call to the |
| 913 | resolver, inserted in the 32768th lazy PLT entry (i.e., entry # |
| 914 | 32767, counting from 0). All other lazy PLT entries branch to it |
| 915 | in a single instruction. */ |
| 916 | |
| 917 | #define FRV_LZPLT_BLOCK_SIZE ((bfd_vma) 8 * 65535 + 4) |
| 918 | #define FRV_LZPLT_RESOLV_LOC (8 * 32767) |
| 919 | |
| 920 | /* Add a dynamic relocation to the SRELOC section. */ |
| 921 | |
| 922 | inline static bfd_vma |
| 923 | _frv_add_dyn_reloc (bfd *output_bfd, asection *sreloc, bfd_vma offset, |
| 924 | int reloc_type, long dynindx, bfd_vma addend, |
| 925 | struct frv_pic_relocs_info *entry) |
| 926 | { |
| 927 | Elf_Internal_Rela outrel; |
| 928 | bfd_vma reloc_offset; |
| 929 | |
| 930 | outrel.r_offset = offset; |
| 931 | outrel.r_info = ELF32_R_INFO (dynindx, reloc_type); |
| 932 | outrel.r_addend = addend; |
| 933 | |
| 934 | reloc_offset = sreloc->reloc_count * sizeof (Elf32_External_Rel); |
| 935 | BFD_ASSERT (reloc_offset < sreloc->_raw_size); |
| 936 | bfd_elf32_swap_reloc_out (output_bfd, &outrel, |
| 937 | sreloc->contents + reloc_offset); |
| 938 | sreloc->reloc_count++; |
| 939 | |
| 940 | BFD_ASSERT (entry->dynrelocs > 0); |
| 941 | entry->dynrelocs--; |
| 942 | |
| 943 | return reloc_offset; |
| 944 | } |
| 945 | |
| 946 | /* Add a fixup to the ROFIXUP section. */ |
| 947 | |
| 948 | static bfd_vma |
| 949 | _frv_add_rofixup (bfd *output_bfd, asection *rofixup, bfd_vma offset, |
| 950 | struct frv_pic_relocs_info *entry) |
| 951 | { |
| 952 | bfd_vma fixup_offset; |
| 953 | |
| 954 | if (rofixup->flags & SEC_EXCLUDE) |
| 955 | return -1; |
| 956 | |
| 957 | fixup_offset = rofixup->reloc_count * 4; |
| 958 | if (rofixup->contents) |
| 959 | { |
| 960 | BFD_ASSERT (fixup_offset < rofixup->_raw_size); |
| 961 | bfd_put_32 (output_bfd, offset, rofixup->contents + fixup_offset); |
| 962 | } |
| 963 | rofixup->reloc_count++; |
| 964 | |
| 965 | if (entry) |
| 966 | { |
| 967 | BFD_ASSERT (entry->fixups > 0); |
| 968 | entry->fixups--; |
| 969 | } |
| 970 | |
| 971 | return fixup_offset; |
| 972 | } |
| 973 | |
| 974 | /* Find the segment number in which OSEC, and output section, is |
| 975 | located. */ |
| 976 | |
| 977 | static unsigned |
| 978 | _frv_osec_to_segment (bfd *output_bfd, asection *osec) |
| 979 | { |
| 980 | struct elf_segment_map *m; |
| 981 | Elf_Internal_Phdr *p; |
| 982 | |
| 983 | /* Find the segment that contains the output_section. */ |
| 984 | for (m = elf_tdata (output_bfd)->segment_map, |
| 985 | p = elf_tdata (output_bfd)->phdr; |
| 986 | m != NULL; |
| 987 | m = m->next, p++) |
| 988 | { |
| 989 | int i; |
| 990 | |
| 991 | for (i = m->count - 1; i >= 0; i--) |
| 992 | if (m->sections[i] == osec) |
| 993 | break; |
| 994 | |
| 995 | if (i >= 0) |
| 996 | break; |
| 997 | } |
| 998 | |
| 999 | return p - elf_tdata (output_bfd)->phdr; |
| 1000 | } |
| 1001 | |
| 1002 | inline static bfd_boolean |
| 1003 | _frv_osec_readonly_p (bfd *output_bfd, asection *osec) |
| 1004 | { |
| 1005 | unsigned seg = _frv_osec_to_segment (output_bfd, osec); |
| 1006 | |
| 1007 | return ! (elf_tdata (output_bfd)->phdr[seg].p_flags & PF_W); |
| 1008 | } |
| 1009 | |
| 1010 | /* Generate relocations for GOT entries, function descriptors, and |
| 1011 | code for PLT and lazy PLT entries. */ |
| 1012 | |
| 1013 | inline static bfd_boolean |
| 1014 | _frv_emit_got_relocs_plt_entries (struct frv_pic_relocs_info *entry, |
| 1015 | bfd *output_bfd, |
| 1016 | struct bfd_link_info *info, |
| 1017 | asection *sec, |
| 1018 | Elf_Internal_Sym *sym, |
| 1019 | bfd_vma addend) |
| 1020 | |
| 1021 | { |
| 1022 | bfd_vma fd_lazy_rel_offset = (bfd_vma)-1; |
| 1023 | int dynindx = -1; |
| 1024 | |
| 1025 | if (entry->done) |
| 1026 | return TRUE; |
| 1027 | entry->done = 1; |
| 1028 | |
| 1029 | if (entry->got_entry || entry->fdgot_entry || entry->fd_entry) |
| 1030 | { |
| 1031 | /* If the symbol is dynamic, consider it for dynamic |
| 1032 | relocations, otherwise decay to section + offset. */ |
| 1033 | if (entry->symndx == -1 && entry->d.h->dynindx != -1) |
| 1034 | dynindx = entry->d.h->dynindx; |
| 1035 | else |
| 1036 | { |
| 1037 | if (sec->output_section |
| 1038 | && ! bfd_is_abs_section (sec->output_section) |
| 1039 | && ! bfd_is_und_section (sec->output_section)) |
| 1040 | dynindx = elf_section_data (sec->output_section)->dynindx; |
| 1041 | else |
| 1042 | dynindx = 0; |
| 1043 | } |
| 1044 | } |
| 1045 | |
| 1046 | /* Generate relocation for GOT entry pointing to the symbol. */ |
| 1047 | if (entry->got_entry) |
| 1048 | { |
| 1049 | int idx = dynindx; |
| 1050 | bfd_vma ad = addend; |
| 1051 | |
| 1052 | /* If the symbol is dynamic but binds locally, use |
| 1053 | section+offset. */ |
| 1054 | if (sec && (entry->symndx != -1 || FRV_SYM_LOCAL (info, entry->d.h))) |
| 1055 | { |
| 1056 | if (entry->symndx == -1) |
| 1057 | ad += entry->d.h->root.u.def.value; |
| 1058 | else |
| 1059 | ad += sym->st_value; |
| 1060 | ad += sec->output_offset; |
| 1061 | if (sec->output_section && elf_section_data (sec->output_section)) |
| 1062 | idx = elf_section_data (sec->output_section)->dynindx; |
| 1063 | else |
| 1064 | idx = 0; |
| 1065 | } |
| 1066 | |
| 1067 | /* If we're linking an executable at a fixed address, we can |
| 1068 | omit the dynamic relocation as long as the symbol is local to |
| 1069 | this module. */ |
| 1070 | if (info->executable && !info->pie |
| 1071 | && (entry->symndx != -1 || FRV_SYM_LOCAL (info, entry->d.h))) |
| 1072 | { |
| 1073 | if (sec) |
| 1074 | ad += sec->output_section->vma; |
| 1075 | if (entry->symndx != -1 |
| 1076 | || entry->d.h->root.type != bfd_link_hash_undefweak) |
| 1077 | _frv_add_rofixup (output_bfd, frv_gotfixup_section (info), |
| 1078 | frv_got_section (info)->output_section->vma |
| 1079 | + frv_got_section (info)->output_offset |
| 1080 | + frv_got_initial_offset (info) |
| 1081 | + entry->got_entry, entry); |
| 1082 | } |
| 1083 | else |
| 1084 | _frv_add_dyn_reloc (output_bfd, frv_gotrel_section (info), |
| 1085 | _bfd_elf_section_offset |
| 1086 | (output_bfd, info, |
| 1087 | frv_got_section (info), |
| 1088 | frv_got_initial_offset (info) |
| 1089 | + entry->got_entry) |
| 1090 | + frv_got_section (info)->output_section->vma |
| 1091 | + frv_got_section (info)->output_offset, |
| 1092 | R_FRV_32, idx, ad, entry); |
| 1093 | |
| 1094 | bfd_put_32 (output_bfd, ad, |
| 1095 | frv_got_section (info)->contents |
| 1096 | + frv_got_initial_offset (info) |
| 1097 | + entry->got_entry); |
| 1098 | } |
| 1099 | |
| 1100 | /* Generate relocation for GOT entry pointing to a canonical |
| 1101 | function descriptor. */ |
| 1102 | if (entry->fdgot_entry) |
| 1103 | { |
| 1104 | int reloc, idx; |
| 1105 | bfd_vma ad = 0; |
| 1106 | |
| 1107 | if (! (entry->symndx == -1 |
| 1108 | && entry->d.h->root.type == bfd_link_hash_undefweak |
| 1109 | && FRV_SYM_LOCAL (info, entry->d.h))) |
| 1110 | { |
| 1111 | /* If the symbol is dynamic and there may be dynamic symbol |
| 1112 | resolution because we are, or are linked with, a shared |
| 1113 | library, emit a FUNCDESC relocation such that the dynamic |
| 1114 | linker will allocate the function descriptor. If the |
| 1115 | symbol needs a non-local function descriptor but binds |
| 1116 | locally (e.g., its visibility is protected, emit a |
| 1117 | dynamic relocation decayed to section+offset. */ |
| 1118 | if (entry->symndx == -1 && ! FRV_FUNCDESC_LOCAL (info, entry->d.h) |
| 1119 | && FRV_SYM_LOCAL (info, entry->d.h) |
| 1120 | && !(info->executable && !info->pie)) |
| 1121 | { |
| 1122 | reloc = R_FRV_FUNCDESC; |
| 1123 | idx = elf_section_data (entry->d.h->root.u.def.section |
| 1124 | ->output_section)->dynindx; |
| 1125 | ad = entry->d.h->root.u.def.section->output_offset |
| 1126 | + entry->d.h->root.u.def.value; |
| 1127 | } |
| 1128 | else if (entry->symndx == -1 |
| 1129 | && ! FRV_FUNCDESC_LOCAL (info, entry->d.h)) |
| 1130 | { |
| 1131 | reloc = R_FRV_FUNCDESC; |
| 1132 | idx = dynindx; |
| 1133 | ad = addend; |
| 1134 | if (ad) |
| 1135 | return FALSE; |
| 1136 | } |
| 1137 | else |
| 1138 | { |
| 1139 | /* Otherwise, we know we have a private function descriptor, |
| 1140 | so reference it directly. */ |
| 1141 | if (elf_hash_table (info)->dynamic_sections_created) |
| 1142 | BFD_ASSERT (entry->privfd); |
| 1143 | reloc = R_FRV_32; |
| 1144 | idx = elf_section_data (frv_got_section (info) |
| 1145 | ->output_section)->dynindx; |
| 1146 | ad = frv_got_section (info)->output_offset |
| 1147 | + frv_got_initial_offset (info) + entry->fd_entry; |
| 1148 | } |
| 1149 | |
| 1150 | /* If there is room for dynamic symbol resolution, emit the |
| 1151 | dynamic relocation. However, if we're linking an |
| 1152 | executable at a fixed location, we won't have emitted a |
| 1153 | dynamic symbol entry for the got section, so idx will be |
| 1154 | zero, which means we can and should compute the address |
| 1155 | of the private descriptor ourselves. */ |
| 1156 | if (info->executable && !info->pie |
| 1157 | && (entry->symndx != -1 |
| 1158 | || FRV_FUNCDESC_LOCAL (info, entry->d.h))) |
| 1159 | { |
| 1160 | ad += frv_got_section (info)->output_section->vma; |
| 1161 | _frv_add_rofixup (output_bfd, frv_gotfixup_section (info), |
| 1162 | frv_got_section (info)->output_section->vma |
| 1163 | + frv_got_section (info)->output_offset |
| 1164 | + frv_got_initial_offset (info) |
| 1165 | + entry->fdgot_entry, entry); |
| 1166 | } |
| 1167 | else |
| 1168 | _frv_add_dyn_reloc (output_bfd, frv_gotrel_section (info), |
| 1169 | _bfd_elf_section_offset |
| 1170 | (output_bfd, info, |
| 1171 | frv_got_section (info), |
| 1172 | frv_got_initial_offset (info) |
| 1173 | + entry->fdgot_entry) |
| 1174 | + frv_got_section (info)->output_section->vma |
| 1175 | + frv_got_section (info)->output_offset, |
| 1176 | reloc, idx, ad, entry); |
| 1177 | } |
| 1178 | |
| 1179 | bfd_put_32 (output_bfd, ad, |
| 1180 | frv_got_section (info)->contents |
| 1181 | + frv_got_initial_offset (info) |
| 1182 | + entry->fdgot_entry); |
| 1183 | } |
| 1184 | |
| 1185 | /* Generate relocation to fill in a private function descriptor in |
| 1186 | the GOT. */ |
| 1187 | if (entry->fd_entry) |
| 1188 | { |
| 1189 | int idx = dynindx; |
| 1190 | bfd_vma ad = addend; |
| 1191 | bfd_vma ofst; |
| 1192 | long lowword, highword; |
| 1193 | |
| 1194 | /* If the symbol is dynamic but binds locally, use |
| 1195 | section+offset. */ |
| 1196 | if (sec && (entry->symndx != -1 || FRV_SYM_LOCAL (info, entry->d.h))) |
| 1197 | { |
| 1198 | if (entry->symndx == -1) |
| 1199 | ad += entry->d.h->root.u.def.value; |
| 1200 | else |
| 1201 | ad += sym->st_value; |
| 1202 | ad += sec->output_offset; |
| 1203 | if (sec->output_section && elf_section_data (sec->output_section)) |
| 1204 | idx = elf_section_data (sec->output_section)->dynindx; |
| 1205 | else |
| 1206 | idx = 0; |
| 1207 | } |
| 1208 | |
| 1209 | /* If we're linking an executable at a fixed address, we can |
| 1210 | omit the dynamic relocation as long as the symbol is local to |
| 1211 | this module. */ |
| 1212 | if (info->executable && !info->pie |
| 1213 | && (entry->symndx != -1 || FRV_SYM_LOCAL (info, entry->d.h))) |
| 1214 | { |
| 1215 | if (sec) |
| 1216 | ad += sec->output_section->vma; |
| 1217 | ofst = 0; |
| 1218 | if (entry->symndx != -1 |
| 1219 | || entry->d.h->root.type != bfd_link_hash_undefweak) |
| 1220 | { |
| 1221 | _frv_add_rofixup (output_bfd, frv_gotfixup_section (info), |
| 1222 | frv_got_section (info)->output_section->vma |
| 1223 | + frv_got_section (info)->output_offset |
| 1224 | + frv_got_initial_offset (info) |
| 1225 | + entry->fd_entry, entry); |
| 1226 | _frv_add_rofixup (output_bfd, frv_gotfixup_section (info), |
| 1227 | frv_got_section (info)->output_section->vma |
| 1228 | + frv_got_section (info)->output_offset |
| 1229 | + frv_got_initial_offset (info) |
| 1230 | + entry->fd_entry + 4, entry); |
| 1231 | } |
| 1232 | } |
| 1233 | else |
| 1234 | { |
| 1235 | ofst = |
| 1236 | _frv_add_dyn_reloc (output_bfd, |
| 1237 | entry->lazyplt ? frv_pltrel_section (info) |
| 1238 | : frv_gotrel_section (info), |
| 1239 | _bfd_elf_section_offset |
| 1240 | (output_bfd, info, |
| 1241 | frv_got_section (info), |
| 1242 | frv_got_initial_offset (info) |
| 1243 | + entry->fd_entry) |
| 1244 | + frv_got_section (info)->output_section->vma |
| 1245 | + frv_got_section (info)->output_offset, |
| 1246 | R_FRV_FUNCDESC_VALUE, idx, ad, entry); |
| 1247 | } |
| 1248 | |
| 1249 | /* If we've omitted the dynamic relocation, just emit the fixed |
| 1250 | addresses of the symbol and of the local GOT base offset. */ |
| 1251 | if (info->executable && !info->pie && sec && sec->output_section) |
| 1252 | { |
| 1253 | lowword = ad; |
| 1254 | highword = frv_got_section (info)->output_section->vma |
| 1255 | + frv_got_section (info)->output_offset |
| 1256 | + frv_got_initial_offset (info); |
| 1257 | } |
| 1258 | else if (entry->lazyplt) |
| 1259 | { |
| 1260 | if (ad) |
| 1261 | return FALSE; |
| 1262 | |
| 1263 | fd_lazy_rel_offset = ofst; |
| 1264 | |
| 1265 | /* A function descriptor used for lazy or local resolving is |
| 1266 | initialized such that its high word contains the output |
| 1267 | section index in which the PLT entries are located, and |
| 1268 | the low word contains the address of the lazy PLT entry |
| 1269 | entry point, that must be within the memory region |
| 1270 | assigned to that section. */ |
| 1271 | lowword = entry->lzplt_entry + 4 |
| 1272 | + frv_plt_section (info)->output_offset |
| 1273 | + frv_plt_section (info)->output_section->vma; |
| 1274 | highword = _frv_osec_to_segment |
| 1275 | (output_bfd, frv_plt_section (info)->output_section); |
| 1276 | } |
| 1277 | else |
| 1278 | { |
| 1279 | /* A function descriptor for a local function gets the index |
| 1280 | of the section. For a non-local function, it's |
| 1281 | disregarded. */ |
| 1282 | lowword = ad; |
| 1283 | if (entry->symndx == -1 && entry->d.h->dynindx != -1 |
| 1284 | && entry->d.h->dynindx == idx) |
| 1285 | highword = 0; |
| 1286 | else |
| 1287 | highword = _frv_osec_to_segment (output_bfd, sec->output_section); |
| 1288 | } |
| 1289 | |
| 1290 | bfd_put_32 (output_bfd, lowword, |
| 1291 | frv_got_section (info)->contents |
| 1292 | + frv_got_initial_offset (info) |
| 1293 | + entry->fd_entry); |
| 1294 | bfd_put_32 (output_bfd, highword, |
| 1295 | frv_got_section (info)->contents |
| 1296 | + frv_got_initial_offset (info) |
| 1297 | + entry->fd_entry + 4); |
| 1298 | } |
| 1299 | |
| 1300 | /* Generate code for the PLT entry. */ |
| 1301 | if (entry->plt_entry != (bfd_vma) -1) |
| 1302 | { |
| 1303 | bfd_byte *plt_code = frv_plt_section (info)->contents + entry->plt_entry; |
| 1304 | |
| 1305 | BFD_ASSERT (entry->fd_entry); |
| 1306 | |
| 1307 | /* Figure out what kind of PLT entry we need, depending on the |
| 1308 | location of the function descriptor within the GOT. */ |
| 1309 | if (entry->fd_entry >= -(1 << (12 - 1)) |
| 1310 | && entry->fd_entry < (1 << (12 - 1))) |
| 1311 | { |
| 1312 | /* lddi @(gr15, fd_entry), gr14 */ |
| 1313 | bfd_put_32 (output_bfd, |
| 1314 | 0x9cccf000 | (entry->fd_entry & ((1 << 12) - 1)), |
| 1315 | plt_code); |
| 1316 | plt_code += 4; |
| 1317 | } |
| 1318 | else |
| 1319 | { |
| 1320 | if (entry->fd_entry >= -(1 << (16 - 1)) |
| 1321 | && entry->fd_entry < (1 << (16 - 1))) |
| 1322 | { |
| 1323 | /* setlos lo(fd_entry), gr14 */ |
| 1324 | bfd_put_32 (output_bfd, |
| 1325 | 0x9cfc0000 |
| 1326 | | (entry->fd_entry & (((bfd_vma)1 << 16) - 1)), |
| 1327 | plt_code); |
| 1328 | plt_code += 4; |
| 1329 | } |
| 1330 | else |
| 1331 | { |
| 1332 | /* sethi.p hi(fd_entry), gr14 |
| 1333 | setlo lo(fd_entry), gr14 */ |
| 1334 | bfd_put_32 (output_bfd, |
| 1335 | 0x1cf80000 |
| 1336 | | ((entry->fd_entry >> 16) |
| 1337 | & (((bfd_vma)1 << 16) - 1)), |
| 1338 | plt_code); |
| 1339 | bfd_put_32 (output_bfd, |
| 1340 | 0x9cf40000 |
| 1341 | | (entry->fd_entry & (((bfd_vma)1 << 16) - 1)), |
| 1342 | plt_code); |
| 1343 | plt_code += 8; |
| 1344 | } |
| 1345 | /* ldd @(gr14,gr15),gr14 */ |
| 1346 | bfd_put_32 (output_bfd, 0x9c08e14f, plt_code); |
| 1347 | plt_code += 4; |
| 1348 | } |
| 1349 | /* jmpl @(gr14,gr0) */ |
| 1350 | bfd_put_32 (output_bfd, 0x8030e000, plt_code); |
| 1351 | } |
| 1352 | |
| 1353 | /* Generate code for the lazy PLT entry. */ |
| 1354 | if (entry->lzplt_entry != (bfd_vma) -1) |
| 1355 | { |
| 1356 | bfd_byte *lzplt_code = frv_plt_section (info)->contents |
| 1357 | + entry->lzplt_entry; |
| 1358 | bfd_vma resolverStub_addr; |
| 1359 | |
| 1360 | bfd_put_32 (output_bfd, fd_lazy_rel_offset, lzplt_code); |
| 1361 | lzplt_code += 4; |
| 1362 | |
| 1363 | resolverStub_addr = entry->lzplt_entry / FRV_LZPLT_BLOCK_SIZE |
| 1364 | * FRV_LZPLT_BLOCK_SIZE + FRV_LZPLT_RESOLV_LOC; |
| 1365 | if (resolverStub_addr >= frv_plt_initial_offset (info)) |
| 1366 | resolverStub_addr = frv_plt_initial_offset (info) - 12; |
| 1367 | |
| 1368 | if (entry->lzplt_entry == resolverStub_addr) |
| 1369 | { |
| 1370 | /* This is a lazy PLT entry that includes a resolver call. */ |
| 1371 | /* ldd @(gr15,gr0), gr4 |
| 1372 | jmpl @(gr4,gr0) */ |
| 1373 | bfd_put_32 (output_bfd, 0x8808f140, lzplt_code); |
| 1374 | bfd_put_32 (output_bfd, 0x80304000, lzplt_code + 4); |
| 1375 | } |
| 1376 | else |
| 1377 | { |
| 1378 | /* bra resolverStub */ |
| 1379 | bfd_put_32 (output_bfd, |
| 1380 | 0xc01a0000 |
| 1381 | | (((resolverStub_addr - entry->lzplt_entry) |
| 1382 | / 4) & (((bfd_vma)1 << 16) - 1)), |
| 1383 | lzplt_code); |
| 1384 | } |
| 1385 | } |
| 1386 | |
| 1387 | return TRUE; |
| 1388 | } |
| 1389 | |
| 1390 | /* Handle an FRV small data reloc. */ |
| 1391 | |
| 1392 | static bfd_reloc_status_type |
| 1393 | elf32_frv_relocate_gprel12 (info, input_bfd, input_section, relocation, |
| 1394 | contents, value) |
| 1395 | struct bfd_link_info *info; |
| 1396 | bfd *input_bfd; |
| 1397 | asection *input_section; |
| 1398 | Elf_Internal_Rela *relocation; |
| 1399 | bfd_byte *contents; |
| 1400 | bfd_vma value; |
| 1401 | { |
| 1402 | bfd_vma insn; |
| 1403 | bfd_vma gp; |
| 1404 | struct bfd_link_hash_entry *h; |
| 1405 | |
| 1406 | h = bfd_link_hash_lookup (info->hash, "_gp", FALSE, FALSE, TRUE); |
| 1407 | |
| 1408 | gp = (h->u.def.value |
| 1409 | + h->u.def.section->output_section->vma |
| 1410 | + h->u.def.section->output_offset); |
| 1411 | |
| 1412 | value -= input_section->output_section->vma; |
| 1413 | value -= (gp - input_section->output_section->vma); |
| 1414 | |
| 1415 | insn = bfd_get_32 (input_bfd, contents + relocation->r_offset); |
| 1416 | |
| 1417 | value += relocation->r_addend; |
| 1418 | |
| 1419 | if ((long) value > 0x7ff || (long) value < -0x800) |
| 1420 | return bfd_reloc_overflow; |
| 1421 | |
| 1422 | bfd_put_32 (input_bfd, |
| 1423 | (insn & 0xfffff000) | (value & 0xfff), |
| 1424 | contents + relocation->r_offset); |
| 1425 | |
| 1426 | return bfd_reloc_ok; |
| 1427 | } |
| 1428 | |
| 1429 | /* Handle an FRV small data reloc. for the u12 field. */ |
| 1430 | |
| 1431 | static bfd_reloc_status_type |
| 1432 | elf32_frv_relocate_gprelu12 (info, input_bfd, input_section, relocation, |
| 1433 | contents, value) |
| 1434 | struct bfd_link_info *info; |
| 1435 | bfd *input_bfd; |
| 1436 | asection *input_section; |
| 1437 | Elf_Internal_Rela *relocation; |
| 1438 | bfd_byte *contents; |
| 1439 | bfd_vma value; |
| 1440 | { |
| 1441 | bfd_vma insn; |
| 1442 | bfd_vma gp; |
| 1443 | struct bfd_link_hash_entry *h; |
| 1444 | bfd_vma mask; |
| 1445 | |
| 1446 | h = bfd_link_hash_lookup (info->hash, "_gp", FALSE, FALSE, TRUE); |
| 1447 | |
| 1448 | gp = (h->u.def.value |
| 1449 | + h->u.def.section->output_section->vma |
| 1450 | + h->u.def.section->output_offset); |
| 1451 | |
| 1452 | value -= input_section->output_section->vma; |
| 1453 | value -= (gp - input_section->output_section->vma); |
| 1454 | |
| 1455 | insn = bfd_get_32 (input_bfd, contents + relocation->r_offset); |
| 1456 | |
| 1457 | value += relocation->r_addend; |
| 1458 | |
| 1459 | if ((long) value > 0x7ff || (long) value < -0x800) |
| 1460 | return bfd_reloc_overflow; |
| 1461 | |
| 1462 | /* The high 6 bits go into bits 17-12. The low 6 bits go into bits 5-0. */ |
| 1463 | mask = 0x3f03f; |
| 1464 | insn = (insn & ~mask) | ((value & 0xfc0) << 12) | (value & 0x3f); |
| 1465 | |
| 1466 | bfd_put_32 (input_bfd, insn, contents + relocation->r_offset); |
| 1467 | |
| 1468 | return bfd_reloc_ok; |
| 1469 | } |
| 1470 | |
| 1471 | /* Handle an FRV ELF HI16 reloc. */ |
| 1472 | |
| 1473 | static bfd_reloc_status_type |
| 1474 | elf32_frv_relocate_hi16 (input_bfd, relhi, contents, value) |
| 1475 | bfd *input_bfd; |
| 1476 | Elf_Internal_Rela *relhi; |
| 1477 | bfd_byte *contents; |
| 1478 | bfd_vma value; |
| 1479 | { |
| 1480 | bfd_vma insn; |
| 1481 | |
| 1482 | insn = bfd_get_32 (input_bfd, contents + relhi->r_offset); |
| 1483 | |
| 1484 | value += relhi->r_addend; |
| 1485 | value = ((value >> 16) & 0xffff); |
| 1486 | |
| 1487 | insn = (insn & 0xffff0000) | value; |
| 1488 | |
| 1489 | if ((long) value > 0xffff || (long) value < -0x10000) |
| 1490 | return bfd_reloc_overflow; |
| 1491 | |
| 1492 | bfd_put_32 (input_bfd, insn, contents + relhi->r_offset); |
| 1493 | return bfd_reloc_ok; |
| 1494 | |
| 1495 | } |
| 1496 | static bfd_reloc_status_type |
| 1497 | elf32_frv_relocate_lo16 (input_bfd, rello, contents, value) |
| 1498 | bfd *input_bfd; |
| 1499 | Elf_Internal_Rela *rello; |
| 1500 | bfd_byte *contents; |
| 1501 | bfd_vma value; |
| 1502 | { |
| 1503 | bfd_vma insn; |
| 1504 | |
| 1505 | insn = bfd_get_32 (input_bfd, contents + rello->r_offset); |
| 1506 | |
| 1507 | value += rello->r_addend; |
| 1508 | value = value & 0xffff; |
| 1509 | |
| 1510 | insn = (insn & 0xffff0000) | value; |
| 1511 | |
| 1512 | if ((long) value > 0xffff || (long) value < -0x10000) |
| 1513 | return bfd_reloc_overflow; |
| 1514 | |
| 1515 | bfd_put_32 (input_bfd, insn, contents + rello->r_offset); |
| 1516 | return bfd_reloc_ok; |
| 1517 | } |
| 1518 | |
| 1519 | /* Perform the relocation for the CALL label24 instruction. */ |
| 1520 | |
| 1521 | static bfd_reloc_status_type |
| 1522 | elf32_frv_relocate_label24 (input_bfd, input_section, rello, contents, value) |
| 1523 | bfd *input_bfd; |
| 1524 | asection *input_section; |
| 1525 | Elf_Internal_Rela *rello; |
| 1526 | bfd_byte *contents; |
| 1527 | bfd_vma value; |
| 1528 | { |
| 1529 | bfd_vma insn; |
| 1530 | bfd_vma label6; |
| 1531 | bfd_vma label18; |
| 1532 | |
| 1533 | /* The format for the call instruction is: |
| 1534 | |
| 1535 | 0 000000 0001111 000000000000000000 |
| 1536 | label6 opcode label18 |
| 1537 | |
| 1538 | The branch calculation is: pc + (4*label24) |
| 1539 | where label24 is the concatenation of label6 and label18. */ |
| 1540 | |
| 1541 | /* Grab the instruction. */ |
| 1542 | insn = bfd_get_32 (input_bfd, contents + rello->r_offset); |
| 1543 | |
| 1544 | value -= input_section->output_section->vma + input_section->output_offset; |
| 1545 | value -= rello->r_offset; |
| 1546 | value += rello->r_addend; |
| 1547 | |
| 1548 | value = value >> 2; |
| 1549 | |
| 1550 | label6 = value & 0xfc0000; |
| 1551 | label6 = label6 << 7; |
| 1552 | |
| 1553 | label18 = value & 0x3ffff; |
| 1554 | |
| 1555 | insn = insn & 0x803c0000; |
| 1556 | insn = insn | label6; |
| 1557 | insn = insn | label18; |
| 1558 | |
| 1559 | bfd_put_32 (input_bfd, insn, contents + rello->r_offset); |
| 1560 | |
| 1561 | return bfd_reloc_ok; |
| 1562 | } |
| 1563 | |
| 1564 | static bfd_reloc_status_type |
| 1565 | elf32_frv_relocate_gprelhi (info, input_bfd, input_section, relocation, |
| 1566 | contents, value) |
| 1567 | struct bfd_link_info *info; |
| 1568 | bfd *input_bfd; |
| 1569 | asection *input_section; |
| 1570 | Elf_Internal_Rela *relocation; |
| 1571 | bfd_byte *contents; |
| 1572 | bfd_vma value; |
| 1573 | { |
| 1574 | bfd_vma insn; |
| 1575 | bfd_vma gp; |
| 1576 | struct bfd_link_hash_entry *h; |
| 1577 | |
| 1578 | h = bfd_link_hash_lookup (info->hash, "_gp", FALSE, FALSE, TRUE); |
| 1579 | |
| 1580 | gp = (h->u.def.value |
| 1581 | + h->u.def.section->output_section->vma |
| 1582 | + h->u.def.section->output_offset); |
| 1583 | |
| 1584 | value -= input_section->output_section->vma; |
| 1585 | value -= (gp - input_section->output_section->vma); |
| 1586 | value += relocation->r_addend; |
| 1587 | value = ((value >> 16) & 0xffff); |
| 1588 | |
| 1589 | if ((long) value > 0xffff || (long) value < -0x10000) |
| 1590 | return bfd_reloc_overflow; |
| 1591 | |
| 1592 | insn = bfd_get_32 (input_bfd, contents + relocation->r_offset); |
| 1593 | insn = (insn & 0xffff0000) | value; |
| 1594 | |
| 1595 | bfd_put_32 (input_bfd, insn, contents + relocation->r_offset); |
| 1596 | return bfd_reloc_ok; |
| 1597 | } |
| 1598 | |
| 1599 | static bfd_reloc_status_type |
| 1600 | elf32_frv_relocate_gprello (info, input_bfd, input_section, relocation, |
| 1601 | contents, value) |
| 1602 | struct bfd_link_info *info; |
| 1603 | bfd *input_bfd; |
| 1604 | asection *input_section; |
| 1605 | Elf_Internal_Rela *relocation; |
| 1606 | bfd_byte *contents; |
| 1607 | bfd_vma value; |
| 1608 | { |
| 1609 | bfd_vma insn; |
| 1610 | bfd_vma gp; |
| 1611 | struct bfd_link_hash_entry *h; |
| 1612 | |
| 1613 | h = bfd_link_hash_lookup (info->hash, "_gp", FALSE, FALSE, TRUE); |
| 1614 | |
| 1615 | gp = (h->u.def.value |
| 1616 | + h->u.def.section->output_section->vma |
| 1617 | + h->u.def.section->output_offset); |
| 1618 | |
| 1619 | value -= input_section->output_section->vma; |
| 1620 | value -= (gp - input_section->output_section->vma); |
| 1621 | value += relocation->r_addend; |
| 1622 | value = value & 0xffff; |
| 1623 | |
| 1624 | if ((long) value > 0xffff || (long) value < -0x10000) |
| 1625 | return bfd_reloc_overflow; |
| 1626 | |
| 1627 | insn = bfd_get_32 (input_bfd, contents + relocation->r_offset); |
| 1628 | insn = (insn & 0xffff0000) | value; |
| 1629 | |
| 1630 | bfd_put_32 (input_bfd, insn, contents + relocation->r_offset); |
| 1631 | |
| 1632 | return bfd_reloc_ok; |
| 1633 | } |
| 1634 | |
| 1635 | static reloc_howto_type * |
| 1636 | frv_reloc_type_lookup (abfd, code) |
| 1637 | bfd *abfd ATTRIBUTE_UNUSED; |
| 1638 | bfd_reloc_code_real_type code; |
| 1639 | { |
| 1640 | switch (code) |
| 1641 | { |
| 1642 | default: |
| 1643 | break; |
| 1644 | |
| 1645 | case BFD_RELOC_NONE: |
| 1646 | return &elf32_frv_howto_table[ (int) R_FRV_NONE]; |
| 1647 | |
| 1648 | case BFD_RELOC_32: |
| 1649 | if (elf_elfheader (abfd)->e_type == ET_EXEC |
| 1650 | || elf_elfheader (abfd)->e_type == ET_DYN) |
| 1651 | return &elf32_frv_rel_32_howto; |
| 1652 | /* Fall through. */ |
| 1653 | case BFD_RELOC_CTOR: |
| 1654 | return &elf32_frv_howto_table[ (int) R_FRV_32]; |
| 1655 | |
| 1656 | case BFD_RELOC_FRV_LABEL16: |
| 1657 | return &elf32_frv_howto_table[ (int) R_FRV_LABEL16]; |
| 1658 | |
| 1659 | case BFD_RELOC_FRV_LABEL24: |
| 1660 | return &elf32_frv_howto_table[ (int) R_FRV_LABEL24]; |
| 1661 | |
| 1662 | case BFD_RELOC_FRV_LO16: |
| 1663 | return &elf32_frv_howto_table[ (int) R_FRV_LO16]; |
| 1664 | |
| 1665 | case BFD_RELOC_FRV_HI16: |
| 1666 | return &elf32_frv_howto_table[ (int) R_FRV_HI16]; |
| 1667 | |
| 1668 | case BFD_RELOC_FRV_GPREL12: |
| 1669 | return &elf32_frv_howto_table[ (int) R_FRV_GPREL12]; |
| 1670 | |
| 1671 | case BFD_RELOC_FRV_GPRELU12: |
| 1672 | return &elf32_frv_howto_table[ (int) R_FRV_GPRELU12]; |
| 1673 | |
| 1674 | case BFD_RELOC_FRV_GPREL32: |
| 1675 | return &elf32_frv_howto_table[ (int) R_FRV_GPREL32]; |
| 1676 | |
| 1677 | case BFD_RELOC_FRV_GPRELHI: |
| 1678 | return &elf32_frv_howto_table[ (int) R_FRV_GPRELHI]; |
| 1679 | |
| 1680 | case BFD_RELOC_FRV_GPRELLO: |
| 1681 | return &elf32_frv_howto_table[ (int) R_FRV_GPRELLO]; |
| 1682 | |
| 1683 | case BFD_RELOC_FRV_GOT12: |
| 1684 | return &elf32_frv_howto_table[ (int) R_FRV_GOT12]; |
| 1685 | |
| 1686 | case BFD_RELOC_FRV_GOTHI: |
| 1687 | return &elf32_frv_howto_table[ (int) R_FRV_GOTHI]; |
| 1688 | |
| 1689 | case BFD_RELOC_FRV_GOTLO: |
| 1690 | return &elf32_frv_howto_table[ (int) R_FRV_GOTLO]; |
| 1691 | |
| 1692 | case BFD_RELOC_FRV_FUNCDESC: |
| 1693 | if (elf_elfheader (abfd)->e_type == ET_EXEC |
| 1694 | || elf_elfheader (abfd)->e_type == ET_DYN) |
| 1695 | return &elf32_frv_rel_funcdesc_howto; |
| 1696 | return &elf32_frv_howto_table[ (int) R_FRV_FUNCDESC]; |
| 1697 | |
| 1698 | case BFD_RELOC_FRV_FUNCDESC_GOT12: |
| 1699 | return &elf32_frv_howto_table[ (int) R_FRV_FUNCDESC_GOT12]; |
| 1700 | |
| 1701 | case BFD_RELOC_FRV_FUNCDESC_GOTHI: |
| 1702 | return &elf32_frv_howto_table[ (int) R_FRV_FUNCDESC_GOTHI]; |
| 1703 | |
| 1704 | case BFD_RELOC_FRV_FUNCDESC_GOTLO: |
| 1705 | return &elf32_frv_howto_table[ (int) R_FRV_FUNCDESC_GOTLO]; |
| 1706 | |
| 1707 | case BFD_RELOC_FRV_FUNCDESC_VALUE: |
| 1708 | if (elf_elfheader (abfd)->e_type == ET_EXEC |
| 1709 | || elf_elfheader (abfd)->e_type == ET_DYN) |
| 1710 | return &elf32_frv_rel_funcdesc_value_howto; |
| 1711 | return &elf32_frv_howto_table[ (int) R_FRV_FUNCDESC_VALUE]; |
| 1712 | |
| 1713 | case BFD_RELOC_FRV_FUNCDESC_GOTOFF12: |
| 1714 | return &elf32_frv_howto_table[ (int) R_FRV_FUNCDESC_GOTOFF12]; |
| 1715 | |
| 1716 | case BFD_RELOC_FRV_FUNCDESC_GOTOFFHI: |
| 1717 | return &elf32_frv_howto_table[ (int) R_FRV_FUNCDESC_GOTOFFHI]; |
| 1718 | |
| 1719 | case BFD_RELOC_FRV_FUNCDESC_GOTOFFLO: |
| 1720 | return &elf32_frv_howto_table[ (int) R_FRV_FUNCDESC_GOTOFFLO]; |
| 1721 | |
| 1722 | case BFD_RELOC_FRV_GOTOFF12: |
| 1723 | return &elf32_frv_howto_table[ (int) R_FRV_GOTOFF12]; |
| 1724 | |
| 1725 | case BFD_RELOC_FRV_GOTOFFHI: |
| 1726 | return &elf32_frv_howto_table[ (int) R_FRV_GOTOFFHI]; |
| 1727 | |
| 1728 | case BFD_RELOC_FRV_GOTOFFLO: |
| 1729 | return &elf32_frv_howto_table[ (int) R_FRV_GOTOFFLO]; |
| 1730 | |
| 1731 | case BFD_RELOC_VTABLE_INHERIT: |
| 1732 | return &elf32_frv_vtinherit_howto; |
| 1733 | |
| 1734 | case BFD_RELOC_VTABLE_ENTRY: |
| 1735 | return &elf32_frv_vtentry_howto; |
| 1736 | } |
| 1737 | |
| 1738 | return NULL; |
| 1739 | } |
| 1740 | |
| 1741 | /* Set the howto pointer for an FRV ELF reloc. */ |
| 1742 | |
| 1743 | static void |
| 1744 | frv_info_to_howto_rela (abfd, cache_ptr, dst) |
| 1745 | bfd *abfd ATTRIBUTE_UNUSED; |
| 1746 | arelent *cache_ptr; |
| 1747 | Elf_Internal_Rela *dst; |
| 1748 | { |
| 1749 | unsigned int r_type; |
| 1750 | |
| 1751 | r_type = ELF32_R_TYPE (dst->r_info); |
| 1752 | switch (r_type) |
| 1753 | { |
| 1754 | case R_FRV_GNU_VTINHERIT: |
| 1755 | cache_ptr->howto = &elf32_frv_vtinherit_howto; |
| 1756 | break; |
| 1757 | |
| 1758 | case R_FRV_GNU_VTENTRY: |
| 1759 | cache_ptr->howto = &elf32_frv_vtentry_howto; |
| 1760 | break; |
| 1761 | |
| 1762 | default: |
| 1763 | cache_ptr->howto = & elf32_frv_howto_table [r_type]; |
| 1764 | break; |
| 1765 | } |
| 1766 | } |
| 1767 | |
| 1768 | /* Set the howto pointer for an FRV ELF REL reloc. */ |
| 1769 | static void |
| 1770 | frv_info_to_howto_rel (bfd *abfd ATTRIBUTE_UNUSED, |
| 1771 | arelent *cache_ptr, Elf_Internal_Rela *dst) |
| 1772 | { |
| 1773 | unsigned int r_type; |
| 1774 | |
| 1775 | r_type = ELF32_R_TYPE (dst->r_info); |
| 1776 | switch (r_type) |
| 1777 | { |
| 1778 | case R_FRV_32: |
| 1779 | cache_ptr->howto = &elf32_frv_rel_32_howto; |
| 1780 | break; |
| 1781 | |
| 1782 | case R_FRV_FUNCDESC: |
| 1783 | cache_ptr->howto = &elf32_frv_rel_funcdesc_howto; |
| 1784 | break; |
| 1785 | |
| 1786 | case R_FRV_FUNCDESC_VALUE: |
| 1787 | cache_ptr->howto = &elf32_frv_rel_funcdesc_value_howto; |
| 1788 | break; |
| 1789 | |
| 1790 | default: |
| 1791 | cache_ptr->howto = NULL; |
| 1792 | break; |
| 1793 | } |
| 1794 | } |
| 1795 | \f |
| 1796 | /* Perform a single relocation. By default we use the standard BFD |
| 1797 | routines, but a few relocs, we have to do them ourselves. */ |
| 1798 | |
| 1799 | static bfd_reloc_status_type |
| 1800 | frv_final_link_relocate (howto, input_bfd, input_section, contents, rel, |
| 1801 | relocation) |
| 1802 | reloc_howto_type *howto; |
| 1803 | bfd *input_bfd; |
| 1804 | asection *input_section; |
| 1805 | bfd_byte *contents; |
| 1806 | Elf_Internal_Rela *rel; |
| 1807 | bfd_vma relocation; |
| 1808 | { |
| 1809 | return _bfd_final_link_relocate (howto, input_bfd, input_section, |
| 1810 | contents, rel->r_offset, relocation, |
| 1811 | rel->r_addend); |
| 1812 | } |
| 1813 | |
| 1814 | \f |
| 1815 | /* Relocate an FRV ELF section. |
| 1816 | |
| 1817 | The RELOCATE_SECTION function is called by the new ELF backend linker |
| 1818 | to handle the relocations for a section. |
| 1819 | |
| 1820 | The relocs are always passed as Rela structures; if the section |
| 1821 | actually uses Rel structures, the r_addend field will always be |
| 1822 | zero. |
| 1823 | |
| 1824 | This function is responsible for adjusting the section contents as |
| 1825 | necessary, and (if using Rela relocs and generating a relocatable |
| 1826 | output file) adjusting the reloc addend as necessary. |
| 1827 | |
| 1828 | This function does not have to worry about setting the reloc |
| 1829 | address or the reloc symbol index. |
| 1830 | |
| 1831 | LOCAL_SYMS is a pointer to the swapped in local symbols. |
| 1832 | |
| 1833 | LOCAL_SECTIONS is an array giving the section in the input file |
| 1834 | corresponding to the st_shndx field of each local symbol. |
| 1835 | |
| 1836 | The global hash table entry for the global symbols can be found |
| 1837 | via elf_sym_hashes (input_bfd). |
| 1838 | |
| 1839 | When generating relocatable output, this function must handle |
| 1840 | STB_LOCAL/STT_SECTION symbols specially. The output symbol is |
| 1841 | going to be the section symbol corresponding to the output |
| 1842 | section, which means that the addend must be adjusted |
| 1843 | accordingly. */ |
| 1844 | |
| 1845 | static bfd_boolean |
| 1846 | elf32_frv_relocate_section (output_bfd, info, input_bfd, input_section, |
| 1847 | contents, relocs, local_syms, local_sections) |
| 1848 | bfd *output_bfd ATTRIBUTE_UNUSED; |
| 1849 | struct bfd_link_info *info; |
| 1850 | bfd *input_bfd; |
| 1851 | asection *input_section; |
| 1852 | bfd_byte *contents; |
| 1853 | Elf_Internal_Rela *relocs; |
| 1854 | Elf_Internal_Sym *local_syms; |
| 1855 | asection **local_sections; |
| 1856 | { |
| 1857 | Elf_Internal_Shdr *symtab_hdr; |
| 1858 | struct elf_link_hash_entry **sym_hashes; |
| 1859 | Elf_Internal_Rela *rel; |
| 1860 | Elf_Internal_Rela *relend; |
| 1861 | unsigned isec_segment, got_segment, plt_segment, gprel_segment, |
| 1862 | check_segment[2]; |
| 1863 | int silence_segment_error = !(info->shared || info->pie); |
| 1864 | |
| 1865 | if (info->relocatable) |
| 1866 | return TRUE; |
| 1867 | |
| 1868 | symtab_hdr = & elf_tdata (input_bfd)->symtab_hdr; |
| 1869 | sym_hashes = elf_sym_hashes (input_bfd); |
| 1870 | relend = relocs + input_section->reloc_count; |
| 1871 | |
| 1872 | isec_segment = _frv_osec_to_segment (output_bfd, |
| 1873 | input_section->output_section); |
| 1874 | if (frv_got_section (info)) |
| 1875 | got_segment = _frv_osec_to_segment (output_bfd, |
| 1876 | frv_got_section (info) |
| 1877 | ->output_section); |
| 1878 | else |
| 1879 | got_segment = -1; |
| 1880 | if (frv_gotfixup_section (info)) |
| 1881 | gprel_segment = _frv_osec_to_segment (output_bfd, |
| 1882 | frv_gotfixup_section (info) |
| 1883 | ->output_section); |
| 1884 | else |
| 1885 | gprel_segment = -1; |
| 1886 | if (elf_hash_table (info)->dynamic_sections_created) |
| 1887 | plt_segment = _frv_osec_to_segment (output_bfd, |
| 1888 | frv_plt_section (info) |
| 1889 | ->output_section); |
| 1890 | else |
| 1891 | plt_segment = -1; |
| 1892 | |
| 1893 | for (rel = relocs; rel < relend; rel ++) |
| 1894 | { |
| 1895 | reloc_howto_type *howto; |
| 1896 | unsigned long r_symndx; |
| 1897 | Elf_Internal_Sym *sym; |
| 1898 | asection *sec; |
| 1899 | struct elf_link_hash_entry *h; |
| 1900 | bfd_vma relocation; |
| 1901 | bfd_reloc_status_type r; |
| 1902 | const char * name = NULL; |
| 1903 | int r_type; |
| 1904 | asection *osec; |
| 1905 | struct frv_pic_relocs_info *picrel; |
| 1906 | bfd_vma orig_addend = rel->r_addend; |
| 1907 | |
| 1908 | r_type = ELF32_R_TYPE (rel->r_info); |
| 1909 | |
| 1910 | if ( r_type == R_FRV_GNU_VTINHERIT |
| 1911 | || r_type == R_FRV_GNU_VTENTRY) |
| 1912 | continue; |
| 1913 | |
| 1914 | /* This is a final link. */ |
| 1915 | r_symndx = ELF32_R_SYM (rel->r_info); |
| 1916 | howto = elf32_frv_howto_table + ELF32_R_TYPE (rel->r_info); |
| 1917 | h = NULL; |
| 1918 | sym = NULL; |
| 1919 | sec = NULL; |
| 1920 | |
| 1921 | if (r_symndx < symtab_hdr->sh_info) |
| 1922 | { |
| 1923 | sym = local_syms + r_symndx; |
| 1924 | osec = sec = local_sections [r_symndx]; |
| 1925 | relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel); |
| 1926 | |
| 1927 | name = bfd_elf_string_from_elf_section |
| 1928 | (input_bfd, symtab_hdr->sh_link, sym->st_name); |
| 1929 | name = (name == NULL) ? bfd_section_name (input_bfd, sec) : name; |
| 1930 | } |
| 1931 | else |
| 1932 | { |
| 1933 | h = sym_hashes [r_symndx - symtab_hdr->sh_info]; |
| 1934 | |
| 1935 | while (h->root.type == bfd_link_hash_indirect |
| 1936 | || h->root.type == bfd_link_hash_warning) |
| 1937 | h = (struct elf_link_hash_entry *) h->root.u.i.link; |
| 1938 | |
| 1939 | name = h->root.root.string; |
| 1940 | |
| 1941 | if ((h->root.type == bfd_link_hash_defined |
| 1942 | || h->root.type == bfd_link_hash_defweak) |
| 1943 | && ! FRV_SYM_LOCAL (info, h)) |
| 1944 | { |
| 1945 | sec = NULL; |
| 1946 | relocation = 0; |
| 1947 | } |
| 1948 | else |
| 1949 | if (h->root.type == bfd_link_hash_defined |
| 1950 | || h->root.type == bfd_link_hash_defweak) |
| 1951 | { |
| 1952 | sec = h->root.u.def.section; |
| 1953 | relocation = (h->root.u.def.value |
| 1954 | + sec->output_section->vma |
| 1955 | + sec->output_offset); |
| 1956 | } |
| 1957 | else if (h->root.type == bfd_link_hash_undefweak) |
| 1958 | { |
| 1959 | relocation = 0; |
| 1960 | } |
| 1961 | else if ( ! info->executable |
| 1962 | && ! info->symbolic |
| 1963 | && info->unresolved_syms_in_objects == RM_IGNORE |
| 1964 | && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT) |
| 1965 | relocation = 0; |
| 1966 | else |
| 1967 | { |
| 1968 | if (! ((*info->callbacks->undefined_symbol) |
| 1969 | (info, h->root.root.string, input_bfd, |
| 1970 | input_section, rel->r_offset, TRUE))) |
| 1971 | return FALSE; |
| 1972 | relocation = 0; |
| 1973 | } |
| 1974 | osec = sec; |
| 1975 | } |
| 1976 | |
| 1977 | switch (r_type) |
| 1978 | { |
| 1979 | case R_FRV_LABEL24: |
| 1980 | case R_FRV_32: |
| 1981 | case R_FRV_GOT12: |
| 1982 | case R_FRV_GOTHI: |
| 1983 | case R_FRV_GOTLO: |
| 1984 | case R_FRV_FUNCDESC_GOT12: |
| 1985 | case R_FRV_FUNCDESC_GOTHI: |
| 1986 | case R_FRV_FUNCDESC_GOTLO: |
| 1987 | case R_FRV_GOTOFF12: |
| 1988 | case R_FRV_GOTOFFHI: |
| 1989 | case R_FRV_GOTOFFLO: |
| 1990 | case R_FRV_FUNCDESC_GOTOFF12: |
| 1991 | case R_FRV_FUNCDESC_GOTOFFHI: |
| 1992 | case R_FRV_FUNCDESC_GOTOFFLO: |
| 1993 | case R_FRV_FUNCDESC: |
| 1994 | case R_FRV_FUNCDESC_VALUE: |
| 1995 | if (h != NULL) |
| 1996 | picrel = frv_pic_relocs_info_for_global (frv_relocs_info (info), |
| 1997 | input_bfd, h, |
| 1998 | orig_addend, INSERT); |
| 1999 | else |
| 2000 | /* In order to find the entry we created before, we must |
| 2001 | use the original addend, not the one that may have been |
| 2002 | modified by _bfd_elf_rela_local_sym(). */ |
| 2003 | picrel = frv_pic_relocs_info_for_local (frv_relocs_info (info), |
| 2004 | input_bfd, r_symndx, |
| 2005 | orig_addend, INSERT); |
| 2006 | if (! picrel) |
| 2007 | return FALSE; |
| 2008 | |
| 2009 | if (!_frv_emit_got_relocs_plt_entries (picrel, output_bfd, info, |
| 2010 | osec, sym, rel->r_addend)) |
| 2011 | { |
| 2012 | info->callbacks->warning |
| 2013 | (info, _("Dynamic relocation references symbol with nonzero addend"), |
| 2014 | name, input_bfd, input_section, rel->r_offset); |
| 2015 | return FALSE; |
| 2016 | |
| 2017 | } |
| 2018 | |
| 2019 | break; |
| 2020 | |
| 2021 | default: |
| 2022 | picrel = NULL; |
| 2023 | if (h && ! FRV_SYM_LOCAL (info, h)) |
| 2024 | { |
| 2025 | info->callbacks->warning |
| 2026 | (info, _("relocation references symbol not defined in the module"), |
| 2027 | name, input_bfd, input_section, rel->r_offset); |
| 2028 | return FALSE; |
| 2029 | } |
| 2030 | break; |
| 2031 | } |
| 2032 | |
| 2033 | switch (r_type) |
| 2034 | { |
| 2035 | case R_FRV_LABEL24: |
| 2036 | check_segment[0] = isec_segment; |
| 2037 | if (picrel->plt) |
| 2038 | { |
| 2039 | relocation = frv_plt_section (info)->output_section->vma |
| 2040 | + frv_plt_section (info)->output_offset |
| 2041 | + picrel->plt_entry; |
| 2042 | check_segment[1] = plt_segment; |
| 2043 | } |
| 2044 | /* We don't want to warn on calls to undefined weak symbols, |
| 2045 | as calls to them must be protected by non-NULL tests |
| 2046 | anyway, and unprotected calls would invoke undefined |
| 2047 | behavior. */ |
| 2048 | else if (picrel->symndx == -1 |
| 2049 | && picrel->d.h->root.type == bfd_link_hash_undefweak) |
| 2050 | check_segment[1] = check_segment[0]; |
| 2051 | else |
| 2052 | check_segment[1] = sec |
| 2053 | ? _frv_osec_to_segment (output_bfd, sec->output_section) |
| 2054 | : (unsigned)-1; |
| 2055 | break; |
| 2056 | |
| 2057 | case R_FRV_GOT12: |
| 2058 | case R_FRV_GOTHI: |
| 2059 | case R_FRV_GOTLO: |
| 2060 | relocation = picrel->got_entry; |
| 2061 | check_segment[0] = check_segment[1] = got_segment; |
| 2062 | break; |
| 2063 | |
| 2064 | case R_FRV_FUNCDESC_GOT12: |
| 2065 | case R_FRV_FUNCDESC_GOTHI: |
| 2066 | case R_FRV_FUNCDESC_GOTLO: |
| 2067 | relocation = picrel->fdgot_entry; |
| 2068 | check_segment[0] = check_segment[1] = got_segment; |
| 2069 | break; |
| 2070 | |
| 2071 | case R_FRV_GOTOFFHI: |
| 2072 | case R_FRV_GOTOFF12: |
| 2073 | case R_FRV_GOTOFFLO: |
| 2074 | relocation -= frv_got_section (info)->output_section->vma |
| 2075 | + frv_got_section (info)->output_offset |
| 2076 | + frv_got_initial_offset (info); |
| 2077 | check_segment[0] = got_segment; |
| 2078 | check_segment[1] = sec |
| 2079 | ? _frv_osec_to_segment (output_bfd, sec->output_section) |
| 2080 | : (unsigned)-1; |
| 2081 | break; |
| 2082 | |
| 2083 | case R_FRV_FUNCDESC_GOTOFF12: |
| 2084 | case R_FRV_FUNCDESC_GOTOFFHI: |
| 2085 | case R_FRV_FUNCDESC_GOTOFFLO: |
| 2086 | relocation = picrel->fd_entry; |
| 2087 | check_segment[0] = check_segment[1] = got_segment; |
| 2088 | break; |
| 2089 | |
| 2090 | case R_FRV_FUNCDESC: |
| 2091 | { |
| 2092 | int dynindx; |
| 2093 | bfd_vma addend = rel->r_addend; |
| 2094 | |
| 2095 | if (! (h && h->root.type == bfd_link_hash_undefweak |
| 2096 | && FRV_SYM_LOCAL (info, h))) |
| 2097 | { |
| 2098 | /* If the symbol is dynamic and there may be dynamic |
| 2099 | symbol resolution because we are or are linked with a |
| 2100 | shared library, emit a FUNCDESC relocation such that |
| 2101 | the dynamic linker will allocate the function |
| 2102 | descriptor. If the symbol needs a non-local function |
| 2103 | descriptor but binds locally (e.g., its visibility is |
| 2104 | protected, emit a dynamic relocation decayed to |
| 2105 | section+offset. */ |
| 2106 | if (h && ! FRV_FUNCDESC_LOCAL (info, h) |
| 2107 | && FRV_SYM_LOCAL (info, h) |
| 2108 | && !(info->executable && !info->pie)) |
| 2109 | { |
| 2110 | dynindx = elf_section_data (h->root.u.def.section |
| 2111 | ->output_section)->dynindx; |
| 2112 | addend += h->root.u.def.section->output_offset |
| 2113 | + h->root.u.def.value; |
| 2114 | } |
| 2115 | else if (h && ! FRV_FUNCDESC_LOCAL (info, h)) |
| 2116 | { |
| 2117 | if (addend) |
| 2118 | { |
| 2119 | info->callbacks->warning |
| 2120 | (info, _("R_FRV_FUNCDESC references dynamic symbol with nonzero addend"), |
| 2121 | name, input_bfd, input_section, rel->r_offset); |
| 2122 | return FALSE; |
| 2123 | } |
| 2124 | dynindx = h->dynindx; |
| 2125 | } |
| 2126 | else |
| 2127 | { |
| 2128 | /* Otherwise, we know we have a private function |
| 2129 | descriptor, so reference it directly. */ |
| 2130 | BFD_ASSERT (picrel->privfd); |
| 2131 | r_type = R_FRV_32; |
| 2132 | dynindx = elf_section_data (frv_got_section (info) |
| 2133 | ->output_section)->dynindx; |
| 2134 | addend = frv_got_section (info)->output_offset |
| 2135 | + frv_got_initial_offset (info) |
| 2136 | + picrel->fd_entry; |
| 2137 | } |
| 2138 | |
| 2139 | /* If there is room for dynamic symbol resolution, emit |
| 2140 | the dynamic relocation. However, if we're linking an |
| 2141 | executable at a fixed location, we won't have emitted a |
| 2142 | dynamic symbol entry for the got section, so idx will |
| 2143 | be zero, which means we can and should compute the |
| 2144 | address of the private descriptor ourselves. */ |
| 2145 | if (info->executable && !info->pie |
| 2146 | && (!h || FRV_FUNCDESC_LOCAL (info, h))) |
| 2147 | { |
| 2148 | addend += frv_got_section (info)->output_section->vma; |
| 2149 | if ((bfd_get_section_flags (output_bfd, |
| 2150 | input_section->output_section) |
| 2151 | & (SEC_ALLOC | SEC_LOAD)) == (SEC_ALLOC | SEC_LOAD)) |
| 2152 | { |
| 2153 | if (_frv_osec_readonly_p (output_bfd, |
| 2154 | input_section->output_section)) |
| 2155 | { |
| 2156 | info->callbacks->warning |
| 2157 | (info, |
| 2158 | _("cannot emit fixups in read-only section"), |
| 2159 | name, input_bfd, input_section, rel->r_offset); |
| 2160 | return FALSE; |
| 2161 | } |
| 2162 | _frv_add_rofixup (output_bfd, |
| 2163 | frv_gotfixup_section (info), |
| 2164 | _bfd_elf_section_offset |
| 2165 | (output_bfd, info, |
| 2166 | input_section, rel->r_offset) |
| 2167 | + input_section->output_section->vma |
| 2168 | + input_section->output_offset, |
| 2169 | picrel); |
| 2170 | } |
| 2171 | } |
| 2172 | else if ((bfd_get_section_flags (output_bfd, |
| 2173 | input_section->output_section) |
| 2174 | & (SEC_ALLOC | SEC_LOAD)) == (SEC_ALLOC | SEC_LOAD)) |
| 2175 | { |
| 2176 | if (_frv_osec_readonly_p (output_bfd, |
| 2177 | input_section->output_section)) |
| 2178 | { |
| 2179 | info->callbacks->warning |
| 2180 | (info, |
| 2181 | _("cannot emit dynamic relocations in read-only section"), |
| 2182 | name, input_bfd, input_section, rel->r_offset); |
| 2183 | return FALSE; |
| 2184 | } |
| 2185 | _frv_add_dyn_reloc (output_bfd, frv_gotrel_section (info), |
| 2186 | _bfd_elf_section_offset |
| 2187 | (output_bfd, info, |
| 2188 | input_section, rel->r_offset) |
| 2189 | + input_section->output_section->vma |
| 2190 | + input_section->output_offset, |
| 2191 | r_type, dynindx, addend, picrel); |
| 2192 | } |
| 2193 | } |
| 2194 | |
| 2195 | /* We want the addend in-place because dynamic |
| 2196 | relocations are REL. Setting relocation to it should |
| 2197 | arrange for it to be installed. */ |
| 2198 | relocation = addend - rel->r_addend; |
| 2199 | } |
| 2200 | check_segment[0] = check_segment[1] = got_segment; |
| 2201 | break; |
| 2202 | |
| 2203 | case R_FRV_32: |
| 2204 | case R_FRV_FUNCDESC_VALUE: |
| 2205 | { |
| 2206 | int dynindx; |
| 2207 | bfd_vma addend = rel->r_addend; |
| 2208 | |
| 2209 | /* If the symbol is dynamic but binds locally, use |
| 2210 | section+offset. */ |
| 2211 | if (h && ! FRV_SYM_LOCAL (info, h)) |
| 2212 | { |
| 2213 | if (addend && r_type == R_FRV_FUNCDESC_VALUE) |
| 2214 | { |
| 2215 | info->callbacks->warning |
| 2216 | (info, _("R_FRV_FUNCDESC_VALUE references dynamic symbol with nonzero addend"), |
| 2217 | name, input_bfd, input_section, rel->r_offset); |
| 2218 | return FALSE; |
| 2219 | } |
| 2220 | dynindx = h->dynindx; |
| 2221 | } |
| 2222 | else |
| 2223 | { |
| 2224 | if (h) |
| 2225 | addend += h->root.u.def.value; |
| 2226 | else |
| 2227 | addend += sym->st_value; |
| 2228 | if (osec) |
| 2229 | addend += osec->output_offset; |
| 2230 | if (osec && osec->output_section |
| 2231 | && ! bfd_is_abs_section (osec->output_section) |
| 2232 | && ! bfd_is_und_section (osec->output_section)) |
| 2233 | dynindx = elf_section_data (osec->output_section)->dynindx; |
| 2234 | else |
| 2235 | dynindx = 0; |
| 2236 | } |
| 2237 | |
| 2238 | /* If we're linking an executable at a fixed address, we |
| 2239 | can omit the dynamic relocation as long as the symbol |
| 2240 | is defined in the current link unit (which is implied |
| 2241 | by its output section not being NULL). */ |
| 2242 | if (info->executable && !info->pie |
| 2243 | && (!h || FRV_SYM_LOCAL (info, h))) |
| 2244 | { |
| 2245 | if (osec) |
| 2246 | addend += osec->output_section->vma; |
| 2247 | if ((elf_elfheader (input_bfd)->e_flags & EF_FRV_FDPIC) |
| 2248 | && (bfd_get_section_flags (output_bfd, |
| 2249 | input_section->output_section) |
| 2250 | & (SEC_ALLOC | SEC_LOAD)) == (SEC_ALLOC | SEC_LOAD)) |
| 2251 | { |
| 2252 | if (_frv_osec_readonly_p (output_bfd, |
| 2253 | input_section->output_section)) |
| 2254 | { |
| 2255 | info->callbacks->warning |
| 2256 | (info, |
| 2257 | _("cannot emit fixups in read-only section"), |
| 2258 | name, input_bfd, input_section, rel->r_offset); |
| 2259 | return FALSE; |
| 2260 | } |
| 2261 | if (!h || h->root.type != bfd_link_hash_undefweak) |
| 2262 | { |
| 2263 | _frv_add_rofixup (output_bfd, |
| 2264 | frv_gotfixup_section (info), |
| 2265 | _bfd_elf_section_offset |
| 2266 | (output_bfd, info, |
| 2267 | input_section, rel->r_offset) |
| 2268 | + input_section->output_section->vma |
| 2269 | + input_section->output_offset, |
| 2270 | picrel); |
| 2271 | if (r_type == R_FRV_FUNCDESC_VALUE) |
| 2272 | _frv_add_rofixup |
| 2273 | (output_bfd, |
| 2274 | frv_gotfixup_section (info), |
| 2275 | _bfd_elf_section_offset |
| 2276 | (output_bfd, info, |
| 2277 | input_section, rel->r_offset) |
| 2278 | + input_section->output_section->vma |
| 2279 | + input_section->output_offset + 4, picrel); |
| 2280 | } |
| 2281 | } |
| 2282 | } |
| 2283 | else |
| 2284 | { |
| 2285 | if ((bfd_get_section_flags (output_bfd, |
| 2286 | input_section->output_section) |
| 2287 | & (SEC_ALLOC | SEC_LOAD)) == (SEC_ALLOC | SEC_LOAD)) |
| 2288 | { |
| 2289 | if (_frv_osec_readonly_p (output_bfd, |
| 2290 | input_section->output_section)) |
| 2291 | { |
| 2292 | info->callbacks->warning |
| 2293 | (info, |
| 2294 | _("cannot emit dynamic relocations in read-only section"), |
| 2295 | name, input_bfd, input_section, rel->r_offset); |
| 2296 | return FALSE; |
| 2297 | } |
| 2298 | _frv_add_dyn_reloc (output_bfd, frv_gotrel_section (info), |
| 2299 | _bfd_elf_section_offset |
| 2300 | (output_bfd, info, |
| 2301 | input_section, rel->r_offset) |
| 2302 | + input_section->output_section->vma |
| 2303 | + input_section->output_offset, |
| 2304 | r_type, dynindx, addend, picrel); |
| 2305 | } |
| 2306 | /* We want the addend in-place because dynamic |
| 2307 | relocations are REL. Setting relocation to it |
| 2308 | should arrange for it to be installed. */ |
| 2309 | relocation = addend - rel->r_addend; |
| 2310 | } |
| 2311 | |
| 2312 | if (r_type == R_FRV_FUNCDESC_VALUE) |
| 2313 | { |
| 2314 | /* If we've omitted the dynamic relocation, just emit |
| 2315 | the fixed addresses of the symbol and of the local |
| 2316 | GOT base offset. */ |
| 2317 | if (info->executable && !info->pie |
| 2318 | && (!h || FRV_SYM_LOCAL (info, h))) |
| 2319 | bfd_put_32 (output_bfd, |
| 2320 | frv_got_section (info)->output_section->vma |
| 2321 | + frv_got_section (info)->output_offset |
| 2322 | + frv_got_initial_offset (info), |
| 2323 | contents + rel->r_offset + 4); |
| 2324 | else |
| 2325 | /* A function descriptor used for lazy or local |
| 2326 | resolving is initialized such that its high word |
| 2327 | contains the output section index in which the |
| 2328 | PLT entries are located, and the low word |
| 2329 | contains the offset of the lazy PLT entry entry |
| 2330 | point into that section. */ |
| 2331 | bfd_put_32 (output_bfd, |
| 2332 | h && ! FRV_SYM_LOCAL (info, h) |
| 2333 | ? 0 |
| 2334 | : _frv_osec_to_segment (output_bfd, |
| 2335 | sec->output_section), |
| 2336 | contents + rel->r_offset + 4); |
| 2337 | } |
| 2338 | } |
| 2339 | check_segment[0] = check_segment[1] = got_segment; |
| 2340 | break; |
| 2341 | |
| 2342 | case R_FRV_GPREL12: |
| 2343 | case R_FRV_GPRELU12: |
| 2344 | case R_FRV_GPREL32: |
| 2345 | case R_FRV_GPRELHI: |
| 2346 | case R_FRV_GPRELLO: |
| 2347 | check_segment[0] = gprel_segment; |
| 2348 | check_segment[1] = sec |
| 2349 | ? _frv_osec_to_segment (output_bfd, sec->output_section) |
| 2350 | : (unsigned)-1; |
| 2351 | break; |
| 2352 | |
| 2353 | default: |
| 2354 | check_segment[0] = isec_segment; |
| 2355 | check_segment[1] = sec |
| 2356 | ? _frv_osec_to_segment (output_bfd, sec->output_section) |
| 2357 | : (unsigned)-1; |
| 2358 | break; |
| 2359 | } |
| 2360 | |
| 2361 | if (check_segment[0] != check_segment[1] |
| 2362 | && (elf_elfheader (output_bfd)->e_flags & EF_FRV_FDPIC)) |
| 2363 | { |
| 2364 | #if 1 |
| 2365 | /* This helps catch problems in GCC while we can't do more |
| 2366 | than static linking. The idea is to test whether the |
| 2367 | input file basename is crt0.o only once. */ |
| 2368 | if (silence_segment_error == 1) |
| 2369 | silence_segment_error = |
| 2370 | (strlen (input_bfd->filename) == 6 |
| 2371 | && strcmp (input_bfd->filename, "crt0.o") == 0) |
| 2372 | || (strlen (input_bfd->filename) > 6 |
| 2373 | && strcmp (input_bfd->filename |
| 2374 | + strlen (input_bfd->filename) - 7, |
| 2375 | "/crt0.o") == 0) |
| 2376 | ? -1 : 0; |
| 2377 | #endif |
| 2378 | if (!silence_segment_error |
| 2379 | /* We don't want duplicate errors for undefined |
| 2380 | symbols. */ |
| 2381 | && !(picrel && picrel->symndx == -1 |
| 2382 | && picrel->d.h->root.type == bfd_link_hash_undefined)) |
| 2383 | info->callbacks->warning |
| 2384 | (info, |
| 2385 | (info->shared || info->pie) |
| 2386 | ? _("relocations between different segments are not supported") |
| 2387 | : _("warning: relocation references a different segment"), |
| 2388 | name, input_bfd, input_section, rel->r_offset); |
| 2389 | if (!silence_segment_error && (info->shared || info->pie)) |
| 2390 | return FALSE; |
| 2391 | elf_elfheader (output_bfd)->e_flags |= EF_FRV_PIC; |
| 2392 | } |
| 2393 | |
| 2394 | switch (r_type) |
| 2395 | { |
| 2396 | case R_FRV_GOTOFFHI: |
| 2397 | /* We need the addend to be applied before we shift the |
| 2398 | value right. */ |
| 2399 | relocation += rel->r_addend; |
| 2400 | /* Fall through. */ |
| 2401 | case R_FRV_GOTHI: |
| 2402 | case R_FRV_FUNCDESC_GOTHI: |
| 2403 | case R_FRV_FUNCDESC_GOTOFFHI: |
| 2404 | relocation >>= 16; |
| 2405 | /* Fall through. */ |
| 2406 | |
| 2407 | case R_FRV_GOTLO: |
| 2408 | case R_FRV_FUNCDESC_GOTLO: |
| 2409 | case R_FRV_GOTOFFLO: |
| 2410 | case R_FRV_FUNCDESC_GOTOFFLO: |
| 2411 | relocation &= 0xffff; |
| 2412 | break; |
| 2413 | |
| 2414 | default: |
| 2415 | break; |
| 2416 | } |
| 2417 | |
| 2418 | switch (r_type) |
| 2419 | { |
| 2420 | case R_FRV_LABEL24: |
| 2421 | if (! picrel->plt) |
| 2422 | break; |
| 2423 | /* Fall through. */ |
| 2424 | |
| 2425 | /* When referencing a GOT entry, a function descriptor or a |
| 2426 | PLT, we don't want the addend to apply to the reference, |
| 2427 | but rather to the referenced symbol. The actual entry |
| 2428 | will have already been created taking the addend into |
| 2429 | account, so cancel it out here. */ |
| 2430 | case R_FRV_GOT12: |
| 2431 | case R_FRV_GOTHI: |
| 2432 | case R_FRV_GOTLO: |
| 2433 | case R_FRV_FUNCDESC_GOT12: |
| 2434 | case R_FRV_FUNCDESC_GOTHI: |
| 2435 | case R_FRV_FUNCDESC_GOTLO: |
| 2436 | case R_FRV_FUNCDESC_GOTOFF12: |
| 2437 | case R_FRV_FUNCDESC_GOTOFFHI: |
| 2438 | case R_FRV_FUNCDESC_GOTOFFLO: |
| 2439 | /* Note that we only want GOTOFFHI, not GOTOFFLO or GOTOFF12 |
| 2440 | here, since we do want to apply the addend to the others. |
| 2441 | Note that we've applied the addend to GOTOFFHI before we |
| 2442 | shifted it right. */ |
| 2443 | case R_FRV_GOTOFFHI: |
| 2444 | relocation -= rel->r_addend; |
| 2445 | break; |
| 2446 | |
| 2447 | default: |
| 2448 | break; |
| 2449 | } |
| 2450 | |
| 2451 | if (r_type == R_FRV_HI16) |
| 2452 | r = elf32_frv_relocate_hi16 (input_bfd, rel, contents, relocation); |
| 2453 | |
| 2454 | else if (r_type == R_FRV_LO16) |
| 2455 | r = elf32_frv_relocate_lo16 (input_bfd, rel, contents, relocation); |
| 2456 | |
| 2457 | else if (r_type == R_FRV_LABEL24) |
| 2458 | r = elf32_frv_relocate_label24 (input_bfd, input_section, rel, |
| 2459 | contents, relocation); |
| 2460 | |
| 2461 | else if (r_type == R_FRV_GPREL12) |
| 2462 | r = elf32_frv_relocate_gprel12 (info, input_bfd, input_section, rel, |
| 2463 | contents, relocation); |
| 2464 | |
| 2465 | else if (r_type == R_FRV_GPRELU12) |
| 2466 | r = elf32_frv_relocate_gprelu12 (info, input_bfd, input_section, rel, |
| 2467 | contents, relocation); |
| 2468 | |
| 2469 | else if (r_type == R_FRV_GPRELLO) |
| 2470 | r = elf32_frv_relocate_gprello (info, input_bfd, input_section, rel, |
| 2471 | contents, relocation); |
| 2472 | |
| 2473 | else if (r_type == R_FRV_GPRELHI) |
| 2474 | r = elf32_frv_relocate_gprelhi (info, input_bfd, input_section, rel, |
| 2475 | contents, relocation); |
| 2476 | |
| 2477 | else |
| 2478 | r = frv_final_link_relocate (howto, input_bfd, input_section, contents, |
| 2479 | rel, relocation); |
| 2480 | |
| 2481 | if (r != bfd_reloc_ok) |
| 2482 | { |
| 2483 | const char * msg = (const char *) NULL; |
| 2484 | |
| 2485 | switch (r) |
| 2486 | { |
| 2487 | case bfd_reloc_overflow: |
| 2488 | r = info->callbacks->reloc_overflow |
| 2489 | (info, name, howto->name, (bfd_vma) 0, |
| 2490 | input_bfd, input_section, rel->r_offset); |
| 2491 | break; |
| 2492 | |
| 2493 | case bfd_reloc_undefined: |
| 2494 | r = info->callbacks->undefined_symbol |
| 2495 | (info, name, input_bfd, input_section, rel->r_offset, TRUE); |
| 2496 | break; |
| 2497 | |
| 2498 | case bfd_reloc_outofrange: |
| 2499 | msg = _("internal error: out of range error"); |
| 2500 | break; |
| 2501 | |
| 2502 | case bfd_reloc_notsupported: |
| 2503 | msg = _("internal error: unsupported relocation error"); |
| 2504 | break; |
| 2505 | |
| 2506 | case bfd_reloc_dangerous: |
| 2507 | msg = _("internal error: dangerous relocation"); |
| 2508 | break; |
| 2509 | |
| 2510 | default: |
| 2511 | msg = _("internal error: unknown error"); |
| 2512 | break; |
| 2513 | } |
| 2514 | |
| 2515 | if (msg) |
| 2516 | r = info->callbacks->warning |
| 2517 | (info, msg, name, input_bfd, input_section, rel->r_offset); |
| 2518 | |
| 2519 | if (! r) |
| 2520 | return FALSE; |
| 2521 | } |
| 2522 | } |
| 2523 | |
| 2524 | return TRUE; |
| 2525 | } |
| 2526 | \f |
| 2527 | /* Return the section that should be marked against GC for a given |
| 2528 | relocation. */ |
| 2529 | |
| 2530 | static asection * |
| 2531 | elf32_frv_gc_mark_hook (sec, info, rel, h, sym) |
| 2532 | asection *sec; |
| 2533 | struct bfd_link_info *info ATTRIBUTE_UNUSED; |
| 2534 | Elf_Internal_Rela *rel; |
| 2535 | struct elf_link_hash_entry *h; |
| 2536 | Elf_Internal_Sym *sym; |
| 2537 | { |
| 2538 | if (h != NULL) |
| 2539 | { |
| 2540 | switch (ELF32_R_TYPE (rel->r_info)) |
| 2541 | { |
| 2542 | case R_FRV_GNU_VTINHERIT: |
| 2543 | case R_FRV_GNU_VTENTRY: |
| 2544 | break; |
| 2545 | |
| 2546 | default: |
| 2547 | switch (h->root.type) |
| 2548 | { |
| 2549 | default: |
| 2550 | break; |
| 2551 | |
| 2552 | case bfd_link_hash_defined: |
| 2553 | case bfd_link_hash_defweak: |
| 2554 | return h->root.u.def.section; |
| 2555 | |
| 2556 | case bfd_link_hash_common: |
| 2557 | return h->root.u.c.p->section; |
| 2558 | } |
| 2559 | } |
| 2560 | } |
| 2561 | else |
| 2562 | return bfd_section_from_elf_index (sec->owner, sym->st_shndx); |
| 2563 | |
| 2564 | return NULL; |
| 2565 | } |
| 2566 | |
| 2567 | /* Update the got entry reference counts for the section being removed. */ |
| 2568 | |
| 2569 | static bfd_boolean |
| 2570 | elf32_frv_gc_sweep_hook (abfd, info, sec, relocs) |
| 2571 | bfd *abfd ATTRIBUTE_UNUSED; |
| 2572 | struct bfd_link_info *info ATTRIBUTE_UNUSED; |
| 2573 | asection *sec ATTRIBUTE_UNUSED; |
| 2574 | const Elf_Internal_Rela *relocs ATTRIBUTE_UNUSED; |
| 2575 | { |
| 2576 | return TRUE; |
| 2577 | } |
| 2578 | |
| 2579 | \f |
| 2580 | /* Hook called by the linker routine which adds symbols from an object |
| 2581 | file. We use it to put .comm items in .scomm, and not .comm. */ |
| 2582 | |
| 2583 | static bfd_boolean |
| 2584 | elf32_frv_add_symbol_hook (abfd, info, sym, namep, flagsp, secp, valp) |
| 2585 | bfd *abfd; |
| 2586 | struct bfd_link_info *info; |
| 2587 | const Elf_Internal_Sym *sym; |
| 2588 | const char **namep ATTRIBUTE_UNUSED; |
| 2589 | flagword *flagsp ATTRIBUTE_UNUSED; |
| 2590 | asection **secp; |
| 2591 | bfd_vma *valp; |
| 2592 | { |
| 2593 | if (sym->st_shndx == SHN_COMMON |
| 2594 | && !info->relocatable |
| 2595 | && (int)sym->st_size <= (int)bfd_get_gp_size (abfd)) |
| 2596 | { |
| 2597 | /* Common symbols less than or equal to -G nn bytes are |
| 2598 | automatically put into .sbss. */ |
| 2599 | |
| 2600 | asection *scomm = bfd_get_section_by_name (abfd, ".scommon"); |
| 2601 | |
| 2602 | if (scomm == NULL) |
| 2603 | { |
| 2604 | scomm = bfd_make_section (abfd, ".scommon"); |
| 2605 | if (scomm == NULL |
| 2606 | || !bfd_set_section_flags (abfd, scomm, (SEC_ALLOC |
| 2607 | | SEC_IS_COMMON |
| 2608 | | SEC_LINKER_CREATED))) |
| 2609 | return FALSE; |
| 2610 | } |
| 2611 | |
| 2612 | *secp = scomm; |
| 2613 | *valp = sym->st_size; |
| 2614 | } |
| 2615 | |
| 2616 | return TRUE; |
| 2617 | } |
| 2618 | /* Create a .got section, as well as its additional info field. This |
| 2619 | is almost entirely copied from |
| 2620 | elflink.c:_bfd_elf_create_got_section(). */ |
| 2621 | |
| 2622 | static bfd_boolean |
| 2623 | _frv_create_got_section (bfd *abfd, struct bfd_link_info *info) |
| 2624 | { |
| 2625 | flagword flags; |
| 2626 | asection *s; |
| 2627 | struct elf_link_hash_entry *h; |
| 2628 | struct bfd_link_hash_entry *bh; |
| 2629 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
| 2630 | int ptralign; |
| 2631 | |
| 2632 | /* This function may be called more than once. */ |
| 2633 | s = bfd_get_section_by_name (abfd, ".got"); |
| 2634 | if (s != NULL && (s->flags & SEC_LINKER_CREATED) != 0) |
| 2635 | return TRUE; |
| 2636 | |
| 2637 | /* Machine specific: although pointers are 32-bits wide, we want the |
| 2638 | GOT to be aligned to a 64-bit boundary, such that function |
| 2639 | descriptors in it can be accessed with 64-bit loads and |
| 2640 | stores. */ |
| 2641 | ptralign = 3; |
| 2642 | |
| 2643 | flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY |
| 2644 | | SEC_LINKER_CREATED); |
| 2645 | |
| 2646 | s = bfd_make_section (abfd, ".got"); |
| 2647 | if (s == NULL |
| 2648 | || !bfd_set_section_flags (abfd, s, flags) |
| 2649 | || !bfd_set_section_alignment (abfd, s, ptralign)) |
| 2650 | return FALSE; |
| 2651 | |
| 2652 | if (bed->want_got_plt) |
| 2653 | { |
| 2654 | s = bfd_make_section (abfd, ".got.plt"); |
| 2655 | if (s == NULL |
| 2656 | || !bfd_set_section_flags (abfd, s, flags) |
| 2657 | || !bfd_set_section_alignment (abfd, s, ptralign)) |
| 2658 | return FALSE; |
| 2659 | } |
| 2660 | |
| 2661 | if (bed->want_got_sym) |
| 2662 | { |
| 2663 | /* Define the symbol _GLOBAL_OFFSET_TABLE_ at the start of the .got |
| 2664 | (or .got.plt) section. We don't do this in the linker script |
| 2665 | because we don't want to define the symbol if we are not creating |
| 2666 | a global offset table. */ |
| 2667 | bh = NULL; |
| 2668 | if (!(_bfd_generic_link_add_one_symbol |
| 2669 | (info, abfd, "_GLOBAL_OFFSET_TABLE_", BSF_GLOBAL, s, |
| 2670 | bed->got_symbol_offset, (const char *) NULL, FALSE, |
| 2671 | bed->collect, &bh))) |
| 2672 | return FALSE; |
| 2673 | h = (struct elf_link_hash_entry *) bh; |
| 2674 | h->elf_link_hash_flags |= ELF_LINK_HASH_DEF_REGULAR; |
| 2675 | h->type = STT_OBJECT; |
| 2676 | |
| 2677 | /* Machine-specific: we want the symbol for executables as |
| 2678 | well. */ |
| 2679 | if (! _bfd_elf_link_record_dynamic_symbol (info, h)) |
| 2680 | return FALSE; |
| 2681 | |
| 2682 | elf_hash_table (info)->hgot = h; |
| 2683 | } |
| 2684 | |
| 2685 | /* The first bit of the global offset table is the header. */ |
| 2686 | s->_raw_size += bed->got_header_size + bed->got_symbol_offset; |
| 2687 | |
| 2688 | /* This is the machine-specific part. Create and initialize section |
| 2689 | data for the got. */ |
| 2690 | frv_got_section (info) = s; |
| 2691 | frv_relocs_info (info) = htab_try_create (1, frv_pic_relocs_info_hash, |
| 2692 | frv_pic_relocs_info_eq, |
| 2693 | (htab_del) NULL); |
| 2694 | if (! frv_relocs_info (info)) |
| 2695 | return FALSE; |
| 2696 | |
| 2697 | s = bfd_make_section (abfd, ".rel.got"); |
| 2698 | if (s == NULL |
| 2699 | || ! bfd_set_section_flags (abfd, s, (flags | SEC_READONLY)) |
| 2700 | || ! bfd_set_section_alignment (abfd, s, 2)) |
| 2701 | return FALSE; |
| 2702 | |
| 2703 | frv_gotrel_section (info) = s; |
| 2704 | |
| 2705 | /* Machine-specific. */ |
| 2706 | s = bfd_make_section (abfd, ".rofixup"); |
| 2707 | if (s == NULL |
| 2708 | || ! bfd_set_section_flags (abfd, s, (flags | SEC_READONLY)) |
| 2709 | || ! bfd_set_section_alignment (abfd, s, 2)) |
| 2710 | return FALSE; |
| 2711 | |
| 2712 | frv_gotfixup_section (info) = s; |
| 2713 | |
| 2714 | /* Define _gp in .rofixup, for FDPIC. If it turns out that |
| 2715 | we're linking with a different linker script, the linker script |
| 2716 | will override it. */ |
| 2717 | bh = NULL; |
| 2718 | if (!(_bfd_generic_link_add_one_symbol |
| 2719 | (info, abfd, "_gp", BSF_GLOBAL, s, -2048, (const char *) NULL, FALSE, |
| 2720 | bed->collect, &bh))) |
| 2721 | return FALSE; |
| 2722 | h = (struct elf_link_hash_entry *) bh; |
| 2723 | h->elf_link_hash_flags |= ELF_LINK_HASH_DEF_REGULAR; |
| 2724 | h->type = STT_OBJECT; |
| 2725 | |
| 2726 | /* Machine-specific: we want the symbol for executables as well. */ |
| 2727 | if (! _bfd_elf_link_record_dynamic_symbol (info, h)) |
| 2728 | return FALSE; |
| 2729 | |
| 2730 | return TRUE; |
| 2731 | } |
| 2732 | |
| 2733 | /* Make sure the got and plt sections exist, and that our pointers in |
| 2734 | the link hash table point to them. */ |
| 2735 | |
| 2736 | static bfd_boolean |
| 2737 | elf32_frv_create_dynamic_sections (bfd *abfd, struct bfd_link_info *info) |
| 2738 | { |
| 2739 | /* This is mostly copied from |
| 2740 | elflink.c:_bfd_elf_create_dynamic_sections(). */ |
| 2741 | flagword flags, pltflags; |
| 2742 | asection *s; |
| 2743 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
| 2744 | |
| 2745 | /* We need to create .plt, .rel[a].plt, .got, .got.plt, .dynbss, and |
| 2746 | .rel[a].bss sections. */ |
| 2747 | |
| 2748 | flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY |
| 2749 | | SEC_LINKER_CREATED); |
| 2750 | |
| 2751 | pltflags = flags; |
| 2752 | pltflags |= SEC_CODE; |
| 2753 | if (bed->plt_not_loaded) |
| 2754 | pltflags &= ~ (SEC_CODE | SEC_LOAD | SEC_HAS_CONTENTS); |
| 2755 | if (bed->plt_readonly) |
| 2756 | pltflags |= SEC_READONLY; |
| 2757 | |
| 2758 | s = bfd_make_section (abfd, ".plt"); |
| 2759 | if (s == NULL |
| 2760 | || ! bfd_set_section_flags (abfd, s, pltflags) |
| 2761 | || ! bfd_set_section_alignment (abfd, s, bed->plt_alignment)) |
| 2762 | return FALSE; |
| 2763 | /* FRV-specific: remember it. */ |
| 2764 | frv_plt_section (info) = s; |
| 2765 | |
| 2766 | if (bed->want_plt_sym) |
| 2767 | { |
| 2768 | /* Define the symbol _PROCEDURE_LINKAGE_TABLE_ at the start of the |
| 2769 | .plt section. */ |
| 2770 | struct elf_link_hash_entry *h; |
| 2771 | struct bfd_link_hash_entry *bh = NULL; |
| 2772 | |
| 2773 | if (! (_bfd_generic_link_add_one_symbol |
| 2774 | (info, abfd, "_PROCEDURE_LINKAGE_TABLE_", BSF_GLOBAL, s, 0, NULL, |
| 2775 | FALSE, get_elf_backend_data (abfd)->collect, &bh))) |
| 2776 | return FALSE; |
| 2777 | h = (struct elf_link_hash_entry *) bh; |
| 2778 | h->elf_link_hash_flags |= ELF_LINK_HASH_DEF_REGULAR; |
| 2779 | h->type = STT_OBJECT; |
| 2780 | |
| 2781 | if (! info->executable |
| 2782 | && ! _bfd_elf_link_record_dynamic_symbol (info, h)) |
| 2783 | return FALSE; |
| 2784 | } |
| 2785 | |
| 2786 | /* FRV-specific: we want rel relocations for the plt. */ |
| 2787 | s = bfd_make_section (abfd, ".rel.plt"); |
| 2788 | if (s == NULL |
| 2789 | || ! bfd_set_section_flags (abfd, s, flags | SEC_READONLY) |
| 2790 | || ! bfd_set_section_alignment (abfd, s, bed->s->log_file_align)) |
| 2791 | return FALSE; |
| 2792 | /* FRV-specific: remember it. */ |
| 2793 | frv_pltrel_section (info) = s; |
| 2794 | |
| 2795 | /* FRV-specific: we want to create the GOT in the FRV way. */ |
| 2796 | if (! _frv_create_got_section (abfd, info)) |
| 2797 | return FALSE; |
| 2798 | |
| 2799 | /* FRV-specific: make sure we created everything we wanted. */ |
| 2800 | BFD_ASSERT (frv_got_section (info) && frv_gotrel_section (info) |
| 2801 | && frv_gotfixup_section (info) |
| 2802 | && frv_plt_section (info) && frv_pltrel_section (info)); |
| 2803 | |
| 2804 | if (bed->want_dynbss) |
| 2805 | { |
| 2806 | /* The .dynbss section is a place to put symbols which are defined |
| 2807 | by dynamic objects, are referenced by regular objects, and are |
| 2808 | not functions. We must allocate space for them in the process |
| 2809 | image and use a R_*_COPY reloc to tell the dynamic linker to |
| 2810 | initialize them at run time. The linker script puts the .dynbss |
| 2811 | section into the .bss section of the final image. */ |
| 2812 | s = bfd_make_section (abfd, ".dynbss"); |
| 2813 | if (s == NULL |
| 2814 | || ! bfd_set_section_flags (abfd, s, SEC_ALLOC | SEC_LINKER_CREATED)) |
| 2815 | return FALSE; |
| 2816 | |
| 2817 | /* The .rel[a].bss section holds copy relocs. This section is not |
| 2818 | normally needed. We need to create it here, though, so that the |
| 2819 | linker will map it to an output section. We can't just create it |
| 2820 | only if we need it, because we will not know whether we need it |
| 2821 | until we have seen all the input files, and the first time the |
| 2822 | main linker code calls BFD after examining all the input files |
| 2823 | (size_dynamic_sections) the input sections have already been |
| 2824 | mapped to the output sections. If the section turns out not to |
| 2825 | be needed, we can discard it later. We will never need this |
| 2826 | section when generating a shared object, since they do not use |
| 2827 | copy relocs. */ |
| 2828 | if (! info->shared) |
| 2829 | { |
| 2830 | s = bfd_make_section (abfd, |
| 2831 | (bed->default_use_rela_p |
| 2832 | ? ".rela.bss" : ".rel.bss")); |
| 2833 | if (s == NULL |
| 2834 | || ! bfd_set_section_flags (abfd, s, flags | SEC_READONLY) |
| 2835 | || ! bfd_set_section_alignment (abfd, s, bed->s->log_file_align)) |
| 2836 | return FALSE; |
| 2837 | } |
| 2838 | } |
| 2839 | |
| 2840 | return TRUE; |
| 2841 | } |
| 2842 | |
| 2843 | /* The name of the dynamic interpreter. This is put in the .interp |
| 2844 | section. */ |
| 2845 | |
| 2846 | #define ELF_DYNAMIC_INTERPRETER "/lib/ld.so.1" |
| 2847 | |
| 2848 | #define DEFAULT_STACK_SIZE 0x20000 |
| 2849 | |
| 2850 | /* This structure is used to collect the number of entries present in |
| 2851 | each addressable range of the got. */ |
| 2852 | struct _frv_dynamic_got_info |
| 2853 | { |
| 2854 | /* Several bits of information about the current link. */ |
| 2855 | struct bfd_link_info *info; |
| 2856 | /* Total size needed for GOT entries within the 12-, 16- or 32-bit |
| 2857 | ranges. */ |
| 2858 | bfd_vma got12, gotlos, gothilo; |
| 2859 | /* Total size needed for function descriptor entries within the 12-, |
| 2860 | 16- or 32-bit ranges. */ |
| 2861 | bfd_vma fd12, fdlos, fdhilo; |
| 2862 | /* Total size needed function descriptor entries referenced in PLT |
| 2863 | entries, that would be profitable to place in offsets close to |
| 2864 | the PIC register. */ |
| 2865 | bfd_vma fdplt; |
| 2866 | /* Total size needed by lazy PLT entries. */ |
| 2867 | bfd_vma lzplt; |
| 2868 | /* Number of relocations carried over from input object files. */ |
| 2869 | unsigned long relocs; |
| 2870 | /* Number of fixups introduced by relocations in input object files. */ |
| 2871 | unsigned long fixups; |
| 2872 | }; |
| 2873 | |
| 2874 | /* Compute the total GOT size required by each symbol in each range. |
| 2875 | Symbols may require up to 4 words in the GOT: an entry pointing to |
| 2876 | the symbol, an entry pointing to its function descriptor, and a |
| 2877 | private function descriptors taking two words. */ |
| 2878 | |
| 2879 | static int |
| 2880 | _frv_count_got_plt_entries (void **entryp, void *dinfo_) |
| 2881 | { |
| 2882 | struct frv_pic_relocs_info *entry = *entryp; |
| 2883 | struct _frv_dynamic_got_info *dinfo = dinfo_; |
| 2884 | unsigned relocs = 0, fixups = 0; |
| 2885 | |
| 2886 | /* Allocate space for a GOT entry pointing to the symbol. */ |
| 2887 | if (entry->got12) |
| 2888 | dinfo->got12 += 4; |
| 2889 | else if (entry->gotlos) |
| 2890 | dinfo->gotlos += 4; |
| 2891 | else if (entry->gothilo) |
| 2892 | dinfo->gothilo += 4; |
| 2893 | else |
| 2894 | entry->relocs32--; |
| 2895 | entry->relocs32++; |
| 2896 | |
| 2897 | /* Allocate space for a GOT entry pointing to the function |
| 2898 | descriptor. */ |
| 2899 | if (entry->fdgot12) |
| 2900 | dinfo->got12 += 4; |
| 2901 | else if (entry->fdgotlos) |
| 2902 | dinfo->gotlos += 4; |
| 2903 | else if (entry->fdgothilo) |
| 2904 | dinfo->gothilo += 4; |
| 2905 | else |
| 2906 | entry->relocsfd--; |
| 2907 | entry->relocsfd++; |
| 2908 | |
| 2909 | /* Decide whether we need a PLT entry, a function descriptor in the |
| 2910 | GOT, and a lazy PLT entry for this symbol. */ |
| 2911 | entry->plt = entry->call |
| 2912 | && entry->symndx == -1 && ! FRV_SYM_LOCAL (dinfo->info, entry->d.h) |
| 2913 | && elf_hash_table (dinfo->info)->dynamic_sections_created; |
| 2914 | entry->privfd = entry->plt |
| 2915 | || entry->fdgoff12 || entry->fdgofflos || entry->fdgoffhilo |
| 2916 | || ((entry->fd || entry->fdgot12 || entry->fdgotlos || entry->fdgothilo) |
| 2917 | && (entry->symndx != -1 |
| 2918 | || FRV_FUNCDESC_LOCAL (dinfo->info, entry->d.h))); |
| 2919 | entry->lazyplt = entry->privfd |
| 2920 | && entry->symndx == -1 && ! FRV_SYM_LOCAL (dinfo->info, entry->d.h) |
| 2921 | && ! (dinfo->info->flags & DF_BIND_NOW) |
| 2922 | && elf_hash_table (dinfo->info)->dynamic_sections_created; |
| 2923 | |
| 2924 | /* Allocate space for a function descriptor. */ |
| 2925 | if (entry->fdgoff12) |
| 2926 | dinfo->fd12 += 8; |
| 2927 | else if (entry->fdgofflos) |
| 2928 | dinfo->fdlos += 8; |
| 2929 | else if (entry->privfd && entry->plt) |
| 2930 | dinfo->fdplt += 8; |
| 2931 | else if (entry->privfd) |
| 2932 | dinfo->fdhilo += 8; |
| 2933 | else |
| 2934 | entry->relocsfdv--; |
| 2935 | entry->relocsfdv++; |
| 2936 | |
| 2937 | if (entry->lazyplt) |
| 2938 | dinfo->lzplt += 8; |
| 2939 | |
| 2940 | if (!dinfo->info->executable || dinfo->info->pie) |
| 2941 | relocs = entry->relocs32 + entry->relocsfd + entry->relocsfdv; |
| 2942 | else |
| 2943 | { |
| 2944 | if (entry->symndx != -1 || FRV_SYM_LOCAL (dinfo->info, entry->d.h)) |
| 2945 | { |
| 2946 | if (entry->symndx != -1 |
| 2947 | || entry->d.h->root.type != bfd_link_hash_undefweak) |
| 2948 | fixups += entry->relocs32 + 2 * entry->relocsfdv; |
| 2949 | } |
| 2950 | else |
| 2951 | relocs += entry->relocs32 + entry->relocsfdv; |
| 2952 | |
| 2953 | if (entry->symndx != -1 || FRV_FUNCDESC_LOCAL (dinfo->info, entry->d.h)) |
| 2954 | { |
| 2955 | if (entry->symndx != -1 |
| 2956 | || entry->d.h->root.type != bfd_link_hash_undefweak) |
| 2957 | fixups += entry->relocsfd; |
| 2958 | } |
| 2959 | else |
| 2960 | relocs += entry->relocsfd; |
| 2961 | } |
| 2962 | |
| 2963 | entry->dynrelocs += relocs; |
| 2964 | entry->fixups += fixups; |
| 2965 | dinfo->relocs += relocs; |
| 2966 | dinfo->fixups += fixups; |
| 2967 | |
| 2968 | return 1; |
| 2969 | } |
| 2970 | |
| 2971 | /* This structure is used to assign offsets to got entries, function |
| 2972 | descriptors, plt entries and lazy plt entries. */ |
| 2973 | |
| 2974 | struct _frv_dynamic_got_plt_info |
| 2975 | { |
| 2976 | /* Summary information collected with _frv_count_got_plt_entries. */ |
| 2977 | struct _frv_dynamic_got_info g; |
| 2978 | |
| 2979 | /* For each addressable range, we record a MAX (positive) and MIN |
| 2980 | (negative) value. CUR is used to assign got entries, and it's |
| 2981 | incremented from an initial positive value to MAX, then from MIN |
| 2982 | to FDCUR (unless FDCUR wraps around first). FDCUR is used to |
| 2983 | assign function descriptors, and it's decreased from an initial |
| 2984 | non-positive value to MIN, then from MAX down to CUR (unless CUR |
| 2985 | wraps around first). All of MIN, MAX, CUR and FDCUR always point |
| 2986 | to even words. ODD, if non-zero, indicates an odd word to be |
| 2987 | used for the next got entry, otherwise CUR is used and |
| 2988 | incremented by a pair of words, wrapping around when it reaches |
| 2989 | MAX. FDCUR is decremented (and wrapped) before the next function |
| 2990 | descriptor is chosen. FDPLT indicates the number of remaining |
| 2991 | slots that can be used for function descriptors used only by PLT |
| 2992 | entries. */ |
| 2993 | struct _frv_dynamic_got_alloc_data |
| 2994 | { |
| 2995 | bfd_signed_vma max, cur, odd, fdcur, min; |
| 2996 | bfd_vma fdplt; |
| 2997 | } got12, gotlos, gothilo; |
| 2998 | }; |
| 2999 | |
| 3000 | /* Determine the positive and negative ranges to be used by each |
| 3001 | offset range in the GOT. FDCUR and CUR, that must be aligned to a |
| 3002 | double-word boundary, are the minimum (negative) and maximum |
| 3003 | (positive) GOT offsets already used by previous ranges, except for |
| 3004 | an ODD entry that may have been left behind. GOT and FD indicate |
| 3005 | the size of GOT entries and function descriptors that must be |
| 3006 | placed within the range from -WRAP to WRAP. If there's room left, |
| 3007 | up to FDPLT bytes should be reserved for additional function |
| 3008 | descriptors. */ |
| 3009 | |
| 3010 | inline static bfd_signed_vma |
| 3011 | _frv_compute_got_alloc_data (struct _frv_dynamic_got_alloc_data *gad, |
| 3012 | bfd_signed_vma fdcur, |
| 3013 | bfd_signed_vma odd, |
| 3014 | bfd_signed_vma cur, |
| 3015 | bfd_vma got, |
| 3016 | bfd_vma fd, |
| 3017 | bfd_vma fdplt, |
| 3018 | bfd_vma wrap) |
| 3019 | { |
| 3020 | bfd_signed_vma wrapmin = -wrap; |
| 3021 | |
| 3022 | /* Start at the given initial points. */ |
| 3023 | gad->fdcur = fdcur; |
| 3024 | gad->cur = cur; |
| 3025 | |
| 3026 | /* If we had an incoming odd word and we have any got entries that |
| 3027 | are going to use it, consume it, otherwise leave gad->odd at |
| 3028 | zero. We might force gad->odd to zero and return the incoming |
| 3029 | odd such that it is used by the next range, but then GOT entries |
| 3030 | might appear to be out of order and we wouldn't be able to |
| 3031 | shorten the GOT by one word if it turns out to end with an |
| 3032 | unpaired GOT entry. */ |
| 3033 | if (odd && got) |
| 3034 | { |
| 3035 | gad->odd = odd; |
| 3036 | got -= 4; |
| 3037 | odd = 0; |
| 3038 | } |
| 3039 | else |
| 3040 | gad->odd = 0; |
| 3041 | |
| 3042 | /* If we're left with an unpaired GOT entry, compute its location |
| 3043 | such that we can return it. Otherwise, if got doesn't require an |
| 3044 | odd number of words here, either odd was already zero in the |
| 3045 | block above, or it was set to zero because got was non-zero, or |
| 3046 | got was already zero. In the latter case, we want the value of |
| 3047 | odd to carry over to the return statement, so we don't want to |
| 3048 | reset odd unless the condition below is true. */ |
| 3049 | if (got & 4) |
| 3050 | { |
| 3051 | odd = cur + got; |
| 3052 | got += 4; |
| 3053 | } |
| 3054 | |
| 3055 | /* Compute the tentative boundaries of this range. */ |
| 3056 | gad->max = cur + got; |
| 3057 | gad->min = fdcur - fd; |
| 3058 | gad->fdplt = 0; |
| 3059 | |
| 3060 | /* If function descriptors took too much space, wrap some of them |
| 3061 | around. */ |
| 3062 | if (gad->min < wrapmin) |
| 3063 | { |
| 3064 | gad->max += wrapmin - gad->min; |
| 3065 | gad->min = wrapmin; |
| 3066 | } |
| 3067 | /* If there is space left and we have function descriptors |
| 3068 | referenced in PLT entries that could take advantage of shorter |
| 3069 | offsets, place them here. */ |
| 3070 | else if (fdplt && gad->min > wrapmin) |
| 3071 | { |
| 3072 | bfd_vma fds; |
| 3073 | if ((bfd_vma) (gad->min - wrapmin) < fdplt) |
| 3074 | fds = gad->min - wrapmin; |
| 3075 | else |
| 3076 | fds = fdplt; |
| 3077 | |
| 3078 | fdplt -= fds; |
| 3079 | gad->min -= fds; |
| 3080 | gad->fdplt += fds; |
| 3081 | } |
| 3082 | |
| 3083 | /* If GOT entries took too much space, wrap some of them around. |
| 3084 | This may well cause gad->min to become lower than wrapmin. This |
| 3085 | will cause a relocation overflow later on, so we don't have to |
| 3086 | report it here . */ |
| 3087 | if ((bfd_vma) gad->max > wrap) |
| 3088 | { |
| 3089 | gad->min -= gad->max - wrap; |
| 3090 | gad->max = wrap; |
| 3091 | } |
| 3092 | /* If there is more space left, try to place some more function |
| 3093 | descriptors for PLT entries. */ |
| 3094 | else if (fdplt && (bfd_vma) gad->max < wrap) |
| 3095 | { |
| 3096 | bfd_vma fds; |
| 3097 | if ((bfd_vma) (wrap - gad->max) < fdplt) |
| 3098 | fds = wrap - gad->max; |
| 3099 | else |
| 3100 | fds = fdplt; |
| 3101 | |
| 3102 | fdplt -= fds; |
| 3103 | gad->max += fds; |
| 3104 | gad->fdplt += fds; |
| 3105 | } |
| 3106 | |
| 3107 | /* If odd was initially computed as an offset past the wrap point, |
| 3108 | wrap it around. */ |
| 3109 | if (odd > gad->max) |
| 3110 | odd = gad->min + odd - gad->max; |
| 3111 | |
| 3112 | /* _frv_get_got_entry() below will always wrap gad->cur if needed |
| 3113 | before returning, so do it here too. This guarantees that, |
| 3114 | should cur and fdcur meet at the wrap point, they'll both be |
| 3115 | equal to min. */ |
| 3116 | if (gad->cur == gad->max) |
| 3117 | gad->cur = gad->min; |
| 3118 | |
| 3119 | return odd; |
| 3120 | } |
| 3121 | |
| 3122 | /* Compute the location of the next GOT entry, given the allocation |
| 3123 | data for a range. */ |
| 3124 | |
| 3125 | inline static bfd_signed_vma |
| 3126 | _frv_get_got_entry (struct _frv_dynamic_got_alloc_data *gad) |
| 3127 | { |
| 3128 | bfd_signed_vma ret; |
| 3129 | |
| 3130 | if (gad->odd) |
| 3131 | { |
| 3132 | /* If there was an odd word left behind, use it. */ |
| 3133 | ret = gad->odd; |
| 3134 | gad->odd = 0; |
| 3135 | } |
| 3136 | else |
| 3137 | { |
| 3138 | /* Otherwise, use the word pointed to by cur, reserve the next |
| 3139 | as an odd word, and skip to the next pair of words, possibly |
| 3140 | wrapping around. */ |
| 3141 | ret = gad->cur; |
| 3142 | gad->odd = gad->cur + 4; |
| 3143 | gad->cur += 8; |
| 3144 | if (gad->cur == gad->max) |
| 3145 | gad->cur = gad->min; |
| 3146 | } |
| 3147 | |
| 3148 | return ret; |
| 3149 | } |
| 3150 | |
| 3151 | /* Compute the location of the next function descriptor entry in the |
| 3152 | GOT, given the allocation data for a range. */ |
| 3153 | |
| 3154 | inline static bfd_signed_vma |
| 3155 | _frv_get_fd_entry (struct _frv_dynamic_got_alloc_data *gad) |
| 3156 | { |
| 3157 | /* If we're at the bottom, wrap around, and only then allocate the |
| 3158 | next pair of words. */ |
| 3159 | if (gad->fdcur == gad->min) |
| 3160 | gad->fdcur = gad->max; |
| 3161 | return gad->fdcur -= 8; |
| 3162 | } |
| 3163 | |
| 3164 | /* Assign GOT offsets for every GOT entry and function descriptor. |
| 3165 | Doing everything in a single pass is tricky. */ |
| 3166 | |
| 3167 | static int |
| 3168 | _frv_assign_got_entries (void **entryp, void *info_) |
| 3169 | { |
| 3170 | struct frv_pic_relocs_info *entry = *entryp; |
| 3171 | struct _frv_dynamic_got_plt_info *dinfo = info_; |
| 3172 | |
| 3173 | if (entry->got12) |
| 3174 | entry->got_entry = _frv_get_got_entry (&dinfo->got12); |
| 3175 | else if (entry->gotlos) |
| 3176 | entry->got_entry = _frv_get_got_entry (&dinfo->gotlos); |
| 3177 | else if (entry->gothilo) |
| 3178 | entry->got_entry = _frv_get_got_entry (&dinfo->gothilo); |
| 3179 | |
| 3180 | if (entry->fdgot12) |
| 3181 | entry->fdgot_entry = _frv_get_got_entry (&dinfo->got12); |
| 3182 | else if (entry->fdgotlos) |
| 3183 | entry->fdgot_entry = _frv_get_got_entry (&dinfo->gotlos); |
| 3184 | else if (entry->fdgothilo) |
| 3185 | entry->fdgot_entry = _frv_get_got_entry (&dinfo->gothilo); |
| 3186 | |
| 3187 | if (entry->fdgoff12) |
| 3188 | entry->fd_entry = _frv_get_fd_entry (&dinfo->got12); |
| 3189 | else if (entry->plt && dinfo->got12.fdplt) |
| 3190 | { |
| 3191 | dinfo->got12.fdplt -= 8; |
| 3192 | entry->fd_entry = _frv_get_fd_entry (&dinfo->got12); |
| 3193 | } |
| 3194 | else if (entry->fdgofflos) |
| 3195 | entry->fd_entry = _frv_get_fd_entry (&dinfo->gotlos); |
| 3196 | else if (entry->plt && dinfo->gotlos.fdplt) |
| 3197 | { |
| 3198 | dinfo->gotlos.fdplt -= 8; |
| 3199 | entry->fd_entry = _frv_get_fd_entry (&dinfo->gotlos); |
| 3200 | } |
| 3201 | else if (entry->plt) |
| 3202 | { |
| 3203 | dinfo->gothilo.fdplt -= 8; |
| 3204 | entry->fd_entry = _frv_get_fd_entry (&dinfo->gothilo); |
| 3205 | } |
| 3206 | else if (entry->privfd) |
| 3207 | entry->fd_entry = _frv_get_fd_entry (&dinfo->gothilo); |
| 3208 | |
| 3209 | return 1; |
| 3210 | } |
| 3211 | |
| 3212 | /* Assign GOT offsets to private function descriptors used by PLT |
| 3213 | entries (or referenced by 32-bit offsets), as well as PLT entries |
| 3214 | and lazy PLT entries. */ |
| 3215 | |
| 3216 | static int |
| 3217 | _frv_assign_plt_entries (void **entryp, void *info_) |
| 3218 | { |
| 3219 | struct frv_pic_relocs_info *entry = *entryp; |
| 3220 | struct _frv_dynamic_got_plt_info *dinfo = info_; |
| 3221 | |
| 3222 | /* If this symbol requires a local function descriptor, allocate |
| 3223 | one. */ |
| 3224 | if (entry->privfd && entry->fd_entry == 0) |
| 3225 | { |
| 3226 | if (dinfo->got12.fdplt) |
| 3227 | { |
| 3228 | entry->fd_entry = _frv_get_fd_entry (&dinfo->got12); |
| 3229 | dinfo->got12.fdplt -= 8; |
| 3230 | } |
| 3231 | else if (dinfo->gotlos.fdplt) |
| 3232 | { |
| 3233 | entry->fd_entry = _frv_get_fd_entry (&dinfo->gotlos); |
| 3234 | dinfo->gotlos.fdplt -= 8; |
| 3235 | } |
| 3236 | else |
| 3237 | { |
| 3238 | BFD_ASSERT (dinfo->gothilo.fdplt) |
| 3239 | entry->fd_entry = _frv_get_fd_entry (&dinfo->gothilo); |
| 3240 | dinfo->gothilo.fdplt -= 8; |
| 3241 | } |
| 3242 | } |
| 3243 | |
| 3244 | if (entry->plt) |
| 3245 | { |
| 3246 | int size; |
| 3247 | |
| 3248 | /* We use the section's raw size to mark the location of the |
| 3249 | next PLT entry. */ |
| 3250 | entry->plt_entry = frv_plt_section (dinfo->g.info)->_raw_size; |
| 3251 | |
| 3252 | /* Figure out the length of this PLT entry based on the |
| 3253 | addressing mode we need to reach the function descriptor. */ |
| 3254 | BFD_ASSERT (entry->fd_entry); |
| 3255 | if (entry->fd_entry >= -(1 << (12 - 1)) |
| 3256 | && entry->fd_entry < (1 << (12 - 1))) |
| 3257 | size = 8; |
| 3258 | else if (entry->fd_entry >= -(1 << (16 - 1)) |
| 3259 | && entry->fd_entry < (1 << (16 - 1))) |
| 3260 | size = 12; |
| 3261 | else |
| 3262 | size = 16; |
| 3263 | |
| 3264 | frv_plt_section (dinfo->g.info)->_raw_size += size; |
| 3265 | } |
| 3266 | |
| 3267 | if (entry->lazyplt) |
| 3268 | { |
| 3269 | entry->lzplt_entry = dinfo->g.lzplt; |
| 3270 | dinfo->g.lzplt += 8; |
| 3271 | /* If this entry is the one that gets the resolver stub, account |
| 3272 | for the additional instruction. */ |
| 3273 | if (entry->lzplt_entry % FRV_LZPLT_BLOCK_SIZE == FRV_LZPLT_RESOLV_LOC) |
| 3274 | dinfo->g.lzplt += 4; |
| 3275 | } |
| 3276 | |
| 3277 | return 1; |
| 3278 | } |
| 3279 | |
| 3280 | /* Follow indirect and warning hash entries so that each got entry |
| 3281 | points to the final symbol definition. P must point to a pointer |
| 3282 | to the hash table we're traversing. Since this traversal may |
| 3283 | modify the hash table, we set this pointer to NULL to indicate |
| 3284 | we've made a potentially-destructive change to the hash table, so |
| 3285 | the traversal must be restarted. */ |
| 3286 | static int |
| 3287 | _frv_resolve_final_relocs_info (void **entryp, void *p) |
| 3288 | { |
| 3289 | struct frv_pic_relocs_info *entry = *entryp; |
| 3290 | htab_t *htab = p; |
| 3291 | |
| 3292 | if (entry->symndx == -1) |
| 3293 | { |
| 3294 | struct elf_link_hash_entry *h = entry->d.h; |
| 3295 | struct frv_pic_relocs_info *oentry; |
| 3296 | |
| 3297 | while (h->root.type == bfd_link_hash_indirect |
| 3298 | || h->root.type == bfd_link_hash_warning) |
| 3299 | h = (struct elf_link_hash_entry *)h->root.u.i.link; |
| 3300 | |
| 3301 | if (entry->d.h == h) |
| 3302 | return 1; |
| 3303 | |
| 3304 | oentry = frv_pic_relocs_info_for_global (*htab, 0, h, entry->addend, |
| 3305 | NO_INSERT); |
| 3306 | |
| 3307 | if (oentry) |
| 3308 | { |
| 3309 | /* Merge the two entries. */ |
| 3310 | frv_pic_merge_early_relocs_info (oentry, entry); |
| 3311 | htab_clear_slot (*htab, entryp); |
| 3312 | return 1; |
| 3313 | } |
| 3314 | |
| 3315 | entry->d.h = h; |
| 3316 | |
| 3317 | /* If we can't find this entry with the new bfd hash, re-insert |
| 3318 | it, and get the traversal restarted. */ |
| 3319 | if (! htab_find (*htab, entry)) |
| 3320 | { |
| 3321 | htab_clear_slot (*htab, entryp); |
| 3322 | entryp = htab_find_slot (*htab, entry, INSERT); |
| 3323 | if (! *entryp) |
| 3324 | *entryp = entry; |
| 3325 | /* Abort the traversal, since the whole table may have |
| 3326 | moved, and leave it up to the parent to restart the |
| 3327 | process. */ |
| 3328 | *(htab_t *)p = NULL; |
| 3329 | return 0; |
| 3330 | } |
| 3331 | } |
| 3332 | |
| 3333 | return 1; |
| 3334 | } |
| 3335 | |
| 3336 | /* Set the sizes of the dynamic sections. */ |
| 3337 | |
| 3338 | static bfd_boolean |
| 3339 | elf32_frv_size_dynamic_sections (bfd *output_bfd, |
| 3340 | struct bfd_link_info *info) |
| 3341 | { |
| 3342 | bfd *dynobj; |
| 3343 | asection *s; |
| 3344 | struct _frv_dynamic_got_plt_info gpinfo; |
| 3345 | bfd_signed_vma odd; |
| 3346 | bfd_vma limit; |
| 3347 | |
| 3348 | dynobj = elf_hash_table (info)->dynobj; |
| 3349 | BFD_ASSERT (dynobj != NULL); |
| 3350 | |
| 3351 | if (elf_hash_table (info)->dynamic_sections_created) |
| 3352 | { |
| 3353 | /* Set the contents of the .interp section to the interpreter. */ |
| 3354 | if (info->executable) |
| 3355 | { |
| 3356 | s = bfd_get_section_by_name (dynobj, ".interp"); |
| 3357 | BFD_ASSERT (s != NULL); |
| 3358 | s->_raw_size = sizeof ELF_DYNAMIC_INTERPRETER; |
| 3359 | s->contents = (bfd_byte *) ELF_DYNAMIC_INTERPRETER; |
| 3360 | } |
| 3361 | } |
| 3362 | |
| 3363 | memset (&gpinfo, 0, sizeof (gpinfo)); |
| 3364 | gpinfo.g.info = info; |
| 3365 | |
| 3366 | for (;;) |
| 3367 | { |
| 3368 | htab_t relocs = frv_relocs_info (info); |
| 3369 | |
| 3370 | htab_traverse (relocs, _frv_resolve_final_relocs_info, &relocs); |
| 3371 | |
| 3372 | if (relocs == frv_relocs_info (info)) |
| 3373 | break; |
| 3374 | } |
| 3375 | |
| 3376 | htab_traverse (frv_relocs_info (info), _frv_count_got_plt_entries, |
| 3377 | &gpinfo.g); |
| 3378 | |
| 3379 | odd = 12; |
| 3380 | /* Compute the total size taken by entries in the 12-bit and 16-bit |
| 3381 | ranges, to tell how many PLT function descriptors we can bring |
| 3382 | into the 12-bit range without causing the 16-bit range to |
| 3383 | overflow. */ |
| 3384 | limit = odd + gpinfo.g.got12 + gpinfo.g.gotlos |
| 3385 | + gpinfo.g.fd12 + gpinfo.g.fdlos; |
| 3386 | if (limit < (bfd_vma)1 << 16) |
| 3387 | limit = ((bfd_vma)1 << 16) - limit; |
| 3388 | else |
| 3389 | limit = 0; |
| 3390 | if (gpinfo.g.fdplt < limit) |
| 3391 | limit = gpinfo.g.fdplt; |
| 3392 | |
| 3393 | /* Determine the ranges of GOT offsets that we can use for each |
| 3394 | range of addressing modes. */ |
| 3395 | odd = _frv_compute_got_alloc_data (&gpinfo.got12, |
| 3396 | 0, |
| 3397 | odd, |
| 3398 | 16, |
| 3399 | gpinfo.g.got12, |
| 3400 | gpinfo.g.fd12, |
| 3401 | limit, |
| 3402 | (bfd_vma)1 << (12-1)); |
| 3403 | odd = _frv_compute_got_alloc_data (&gpinfo.gotlos, |
| 3404 | gpinfo.got12.min, |
| 3405 | odd, |
| 3406 | gpinfo.got12.max, |
| 3407 | gpinfo.g.gotlos, |
| 3408 | gpinfo.g.fdlos, |
| 3409 | gpinfo.g.fdplt - gpinfo.got12.fdplt, |
| 3410 | (bfd_vma)1 << (16-1)); |
| 3411 | odd = _frv_compute_got_alloc_data (&gpinfo.gothilo, |
| 3412 | gpinfo.gotlos.min, |
| 3413 | odd, |
| 3414 | gpinfo.gotlos.max, |
| 3415 | gpinfo.g.gothilo, |
| 3416 | gpinfo.g.fdhilo, |
| 3417 | gpinfo.g.fdplt - gpinfo.got12.fdplt |
| 3418 | - gpinfo.gotlos.fdplt, |
| 3419 | (bfd_vma)1 << (32-1)); |
| 3420 | |
| 3421 | /* Now assign (most) GOT offsets. */ |
| 3422 | htab_traverse (frv_relocs_info (info), _frv_assign_got_entries, &gpinfo); |
| 3423 | |
| 3424 | frv_got_section (info)->_raw_size = gpinfo.gothilo.max - gpinfo.gothilo.min |
| 3425 | /* If an odd word is the last word of the GOT, we don't need this |
| 3426 | word to be part of the GOT. */ |
| 3427 | - (odd + 4 == gpinfo.gothilo.max ? 4 : 0); |
| 3428 | if (frv_got_section (info)->_raw_size == 0) |
| 3429 | frv_got_section (info)->flags |= SEC_EXCLUDE; |
| 3430 | else if (frv_got_section (info)->_raw_size == 12 |
| 3431 | && ! elf_hash_table (info)->dynamic_sections_created) |
| 3432 | { |
| 3433 | frv_got_section (info)->flags |= SEC_EXCLUDE; |
| 3434 | frv_got_section (info)->_raw_size = 0; |
| 3435 | } |
| 3436 | else |
| 3437 | { |
| 3438 | frv_got_section (info)->contents = |
| 3439 | (bfd_byte *) bfd_zalloc (dynobj, frv_got_section (info)->_raw_size); |
| 3440 | if (frv_got_section (info)->contents == NULL) |
| 3441 | return FALSE; |
| 3442 | } |
| 3443 | |
| 3444 | if (elf_hash_table (info)->dynamic_sections_created) |
| 3445 | /* Subtract the number of lzplt entries, since those will generate |
| 3446 | relocations in the pltrel section. */ |
| 3447 | frv_gotrel_section (info)->_raw_size = |
| 3448 | (gpinfo.g.relocs - gpinfo.g.lzplt / 8) |
| 3449 | * get_elf_backend_data (output_bfd)->s->sizeof_rel; |
| 3450 | else |
| 3451 | BFD_ASSERT (gpinfo.g.relocs == 0); |
| 3452 | if (frv_gotrel_section (info)->_raw_size == 0) |
| 3453 | frv_gotrel_section (info)->flags |= SEC_EXCLUDE; |
| 3454 | else |
| 3455 | { |
| 3456 | frv_gotrel_section (info)->contents = |
| 3457 | (bfd_byte *) bfd_zalloc (dynobj, frv_gotrel_section (info)->_raw_size); |
| 3458 | if (frv_gotrel_section (info)->contents == NULL) |
| 3459 | return FALSE; |
| 3460 | } |
| 3461 | |
| 3462 | if (elf_elfheader (output_bfd)->e_flags & EF_FRV_FDPIC) |
| 3463 | frv_gotfixup_section (info)->_raw_size = (gpinfo.g.fixups + 1) * 4; |
| 3464 | if (frv_gotfixup_section (info)->_raw_size == 0) |
| 3465 | frv_gotfixup_section (info)->flags |= SEC_EXCLUDE; |
| 3466 | else |
| 3467 | { |
| 3468 | frv_gotfixup_section (info)->contents = |
| 3469 | (bfd_byte *) bfd_zalloc (dynobj, |
| 3470 | frv_gotfixup_section (info)->_raw_size); |
| 3471 | if (frv_gotfixup_section (info)->contents == NULL) |
| 3472 | return FALSE; |
| 3473 | } |
| 3474 | |
| 3475 | if (elf_hash_table (info)->dynamic_sections_created) |
| 3476 | { |
| 3477 | frv_pltrel_section (info)->_raw_size = |
| 3478 | gpinfo.g.lzplt / 8 * get_elf_backend_data (output_bfd)->s->sizeof_rel; |
| 3479 | if (frv_pltrel_section (info)->_raw_size == 0) |
| 3480 | frv_pltrel_section (info)->flags |= SEC_EXCLUDE; |
| 3481 | else |
| 3482 | { |
| 3483 | frv_pltrel_section (info)->contents = |
| 3484 | (bfd_byte *) bfd_zalloc (dynobj, |
| 3485 | frv_pltrel_section (info)->_raw_size); |
| 3486 | if (frv_pltrel_section (info)->contents == NULL) |
| 3487 | return FALSE; |
| 3488 | } |
| 3489 | } |
| 3490 | |
| 3491 | /* Add 4 bytes for every block of at most 65535 lazy PLT entries, |
| 3492 | such that there's room for the additional instruction needed to |
| 3493 | call the resolver. Since _frv_assign_got_entries didn't account |
| 3494 | for them, our block size is 4 bytes smaller than the real block |
| 3495 | size. */ |
| 3496 | if (elf_hash_table (info)->dynamic_sections_created) |
| 3497 | { |
| 3498 | frv_plt_section (info)->_raw_size = gpinfo.g.lzplt |
| 3499 | + ((gpinfo.g.lzplt + (FRV_LZPLT_BLOCK_SIZE - 4) - 8) |
| 3500 | / (FRV_LZPLT_BLOCK_SIZE - 4) * 4); |
| 3501 | } |
| 3502 | |
| 3503 | /* Reset it, such that _frv_assign_plt_entries() can use it to |
| 3504 | actually assign lazy PLT entries addresses. */ |
| 3505 | gpinfo.g.lzplt = 0; |
| 3506 | |
| 3507 | /* Save information that we're going to need to generate GOT and PLT |
| 3508 | entries. */ |
| 3509 | frv_got_initial_offset (info) = -gpinfo.gothilo.min; |
| 3510 | |
| 3511 | if (get_elf_backend_data (output_bfd)->want_got_sym) |
| 3512 | elf_hash_table (info)->hgot->root.u.def.value |
| 3513 | += frv_got_initial_offset (info); |
| 3514 | |
| 3515 | if (elf_hash_table (info)->dynamic_sections_created) |
| 3516 | frv_plt_initial_offset (info) = frv_plt_section (info)->_raw_size; |
| 3517 | |
| 3518 | htab_traverse (frv_relocs_info (info), _frv_assign_plt_entries, &gpinfo); |
| 3519 | |
| 3520 | /* Allocate the PLT section contents only after |
| 3521 | _frv_assign_plt_entries has a chance to add the size of the |
| 3522 | non-lazy PLT entries. */ |
| 3523 | if (elf_hash_table (info)->dynamic_sections_created) |
| 3524 | { |
| 3525 | if (frv_plt_section (info)->_raw_size == 0) |
| 3526 | frv_plt_section (info)->flags |= SEC_EXCLUDE; |
| 3527 | else |
| 3528 | { |
| 3529 | frv_plt_section (info)->contents = |
| 3530 | (bfd_byte *) bfd_zalloc (dynobj, frv_plt_section (info)->_raw_size); |
| 3531 | if (frv_plt_section (info)->contents == NULL) |
| 3532 | return FALSE; |
| 3533 | } |
| 3534 | } |
| 3535 | |
| 3536 | if (elf_hash_table (info)->dynamic_sections_created) |
| 3537 | { |
| 3538 | if (frv_got_section (info)->_raw_size) |
| 3539 | if (! bfd_elf32_add_dynamic_entry (info, DT_PLTGOT, 0)) |
| 3540 | return FALSE; |
| 3541 | |
| 3542 | if (frv_pltrel_section (info)->_raw_size) |
| 3543 | if (! bfd_elf32_add_dynamic_entry (info, DT_PLTRELSZ, 0) |
| 3544 | || ! bfd_elf32_add_dynamic_entry (info, DT_PLTREL, DT_REL) |
| 3545 | || ! bfd_elf32_add_dynamic_entry (info, DT_JMPREL, 0)) |
| 3546 | return FALSE; |
| 3547 | |
| 3548 | if (frv_gotrel_section (info)->_raw_size) |
| 3549 | if (! bfd_elf32_add_dynamic_entry (info, DT_REL, 0) |
| 3550 | || ! bfd_elf32_add_dynamic_entry (info, DT_RELSZ, 0) |
| 3551 | || ! bfd_elf32_add_dynamic_entry (info, DT_RELENT, |
| 3552 | sizeof (Elf32_External_Rel))) |
| 3553 | return FALSE; |
| 3554 | } |
| 3555 | |
| 3556 | return TRUE; |
| 3557 | } |
| 3558 | |
| 3559 | static bfd_boolean |
| 3560 | elf32_frv_always_size_sections (bfd *output_bfd, |
| 3561 | struct bfd_link_info *info) |
| 3562 | { |
| 3563 | if (!info->relocatable |
| 3564 | && elf_elfheader (output_bfd)->e_flags & EF_FRV_FDPIC) |
| 3565 | { |
| 3566 | struct elf_link_hash_entry *h; |
| 3567 | asection *sec; |
| 3568 | |
| 3569 | /* Force a PT_GNU_STACK segment to be created. */ |
| 3570 | if (! elf_tdata (output_bfd)->stack_flags) |
| 3571 | elf_tdata (output_bfd)->stack_flags = PF_R | PF_W | PF_X; |
| 3572 | |
| 3573 | /* Define __stacksize if it's not defined yet. */ |
| 3574 | h = elf_link_hash_lookup (elf_hash_table (info), "__stacksize", |
| 3575 | FALSE, FALSE, FALSE); |
| 3576 | if (! h || h->root.type != bfd_link_hash_defined |
| 3577 | || h->type != STT_OBJECT |
| 3578 | || !(h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR)) |
| 3579 | { |
| 3580 | struct bfd_link_hash_entry *bh = NULL; |
| 3581 | |
| 3582 | if (!(_bfd_generic_link_add_one_symbol |
| 3583 | (info, output_bfd, "__stacksize", |
| 3584 | BSF_GLOBAL, bfd_abs_section_ptr, DEFAULT_STACK_SIZE, |
| 3585 | (const char *) NULL, FALSE, |
| 3586 | get_elf_backend_data (output_bfd)->collect, &bh))) |
| 3587 | return FALSE; |
| 3588 | |
| 3589 | h = (struct elf_link_hash_entry *) bh; |
| 3590 | h->elf_link_hash_flags |= ELF_LINK_HASH_DEF_REGULAR; |
| 3591 | h->type = STT_OBJECT; |
| 3592 | } |
| 3593 | |
| 3594 | /* Create a stack section, and set its alignment. */ |
| 3595 | sec = bfd_make_section (output_bfd, ".stack"); |
| 3596 | |
| 3597 | if (sec == NULL |
| 3598 | || ! bfd_set_section_alignment (output_bfd, sec, 3)) |
| 3599 | return FALSE; |
| 3600 | } |
| 3601 | |
| 3602 | return TRUE; |
| 3603 | } |
| 3604 | |
| 3605 | static bfd_boolean |
| 3606 | elf32_frv_modify_segment_map (bfd *output_bfd, |
| 3607 | struct bfd_link_info *info) |
| 3608 | { |
| 3609 | if (elf_elfheader (output_bfd)->e_flags & EF_FRV_FDPIC) |
| 3610 | { |
| 3611 | struct elf_segment_map *m; |
| 3612 | |
| 3613 | for (m = elf_tdata (output_bfd)->segment_map; m != NULL; m = m->next) |
| 3614 | if (m->p_type == PT_GNU_STACK) |
| 3615 | break; |
| 3616 | |
| 3617 | if (m) |
| 3618 | { |
| 3619 | asection *sec = bfd_get_section_by_name (output_bfd, ".stack"); |
| 3620 | struct elf_link_hash_entry *h; |
| 3621 | |
| 3622 | if (sec) |
| 3623 | { |
| 3624 | /* Obtain the pointer to the __stacksize symbol. */ |
| 3625 | h = elf_link_hash_lookup (elf_hash_table (info), "__stacksize", |
| 3626 | FALSE, FALSE, FALSE); |
| 3627 | while (h->root.type == bfd_link_hash_indirect |
| 3628 | || h->root.type == bfd_link_hash_warning) |
| 3629 | h = (struct elf_link_hash_entry *)h->root.u.i.link; |
| 3630 | BFD_ASSERT (h->root.type == bfd_link_hash_defined); |
| 3631 | |
| 3632 | /* Set the section size from the symbol value. We |
| 3633 | intentionally ignore the symbol section. */ |
| 3634 | if (h->root.type == bfd_link_hash_defined) |
| 3635 | sec->_raw_size = h->root.u.def.value; |
| 3636 | else |
| 3637 | sec->_raw_size = DEFAULT_STACK_SIZE; |
| 3638 | |
| 3639 | /* Add the stack section to the PT_GNU_STACK segment, |
| 3640 | such that its size and alignment requirements make it |
| 3641 | to the segment. */ |
| 3642 | m->sections[m->count] = sec; |
| 3643 | m->count++; |
| 3644 | } |
| 3645 | } |
| 3646 | } |
| 3647 | |
| 3648 | return TRUE; |
| 3649 | } |
| 3650 | |
| 3651 | /* Fill in code and data in dynamic sections. */ |
| 3652 | |
| 3653 | static bfd_boolean |
| 3654 | elf32_frv_finish_dynamic_sections (bfd *output_bfd, |
| 3655 | struct bfd_link_info *info) |
| 3656 | { |
| 3657 | bfd *dynobj; |
| 3658 | asection *sdyn; |
| 3659 | |
| 3660 | dynobj = elf_hash_table (info)->dynobj; |
| 3661 | |
| 3662 | if (frv_got_section (info)) |
| 3663 | { |
| 3664 | BFD_ASSERT (frv_gotrel_section (info)->_raw_size |
| 3665 | == (frv_gotrel_section (info)->reloc_count |
| 3666 | * sizeof (Elf32_External_Rel))); |
| 3667 | |
| 3668 | if (frv_gotfixup_section (info)) |
| 3669 | { |
| 3670 | if (elf_elfheader (output_bfd)->e_flags & EF_FRV_FDPIC) |
| 3671 | { |
| 3672 | struct elf_link_hash_entry *hgot = elf_hash_table (info)->hgot; |
| 3673 | bfd_vma got_value = hgot->root.u.def.value |
| 3674 | + hgot->root.u.def.section->output_section->vma |
| 3675 | + hgot->root.u.def.section->output_offset; |
| 3676 | |
| 3677 | _frv_add_rofixup (output_bfd, frv_gotfixup_section (info), |
| 3678 | got_value, 0); |
| 3679 | } |
| 3680 | |
| 3681 | if (frv_gotfixup_section (info)->_raw_size |
| 3682 | != (frv_gotfixup_section (info)->reloc_count * 4)) |
| 3683 | { |
| 3684 | if (frv_gotfixup_section (info)->_raw_size |
| 3685 | < frv_gotfixup_section (info)->reloc_count * 4) |
| 3686 | { |
| 3687 | info->callbacks->warning |
| 3688 | (info, "LINKER BUG: .rofixup section size mismatch", |
| 3689 | ".rofixup", NULL, NULL, 0); |
| 3690 | abort (); |
| 3691 | return FALSE; |
| 3692 | } |
| 3693 | else if (!elf_hash_table (info)->dynamic_sections_created) |
| 3694 | { |
| 3695 | info->callbacks->warning |
| 3696 | (info, "no dynamic sections, missing -melf32frvfd?", |
| 3697 | ".rofixup", NULL, NULL, 0); |
| 3698 | return FALSE; |
| 3699 | } |
| 3700 | BFD_ASSERT (0); |
| 3701 | } |
| 3702 | } |
| 3703 | } |
| 3704 | if (elf_hash_table (info)->dynamic_sections_created) |
| 3705 | { |
| 3706 | BFD_ASSERT (frv_pltrel_section (info)->_raw_size |
| 3707 | == (frv_pltrel_section (info)->reloc_count |
| 3708 | * sizeof (Elf32_External_Rel))); |
| 3709 | } |
| 3710 | |
| 3711 | sdyn = bfd_get_section_by_name (dynobj, ".dynamic"); |
| 3712 | |
| 3713 | if (elf_hash_table (info)->dynamic_sections_created) |
| 3714 | { |
| 3715 | Elf32_External_Dyn * dyncon; |
| 3716 | Elf32_External_Dyn * dynconend; |
| 3717 | |
| 3718 | BFD_ASSERT (sdyn != NULL); |
| 3719 | |
| 3720 | dyncon = (Elf32_External_Dyn *) sdyn->contents; |
| 3721 | dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->_raw_size); |
| 3722 | |
| 3723 | for (; dyncon < dynconend; dyncon++) |
| 3724 | { |
| 3725 | Elf_Internal_Dyn dyn; |
| 3726 | |
| 3727 | bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn); |
| 3728 | |
| 3729 | switch (dyn.d_tag) |
| 3730 | { |
| 3731 | default: |
| 3732 | break; |
| 3733 | |
| 3734 | case DT_PLTGOT: |
| 3735 | dyn.d_un.d_ptr = frv_got_section (info)->output_section->vma |
| 3736 | + frv_got_section (info)->output_offset |
| 3737 | + frv_got_initial_offset (info); |
| 3738 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); |
| 3739 | break; |
| 3740 | |
| 3741 | case DT_JMPREL: |
| 3742 | dyn.d_un.d_ptr = frv_pltrel_section (info)->output_section->vma |
| 3743 | + frv_pltrel_section (info)->output_offset; |
| 3744 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); |
| 3745 | break; |
| 3746 | |
| 3747 | case DT_PLTRELSZ: |
| 3748 | if (frv_pltrel_section (info)->_cooked_size != 0) |
| 3749 | dyn.d_un.d_val = frv_pltrel_section (info)->_cooked_size; |
| 3750 | else |
| 3751 | dyn.d_un.d_val = frv_pltrel_section (info)->_raw_size; |
| 3752 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); |
| 3753 | break; |
| 3754 | } |
| 3755 | } |
| 3756 | } |
| 3757 | |
| 3758 | return TRUE; |
| 3759 | } |
| 3760 | |
| 3761 | /* Adjust a symbol defined by a dynamic object and referenced by a |
| 3762 | regular object. */ |
| 3763 | |
| 3764 | static bfd_boolean |
| 3765 | elf32_frv_adjust_dynamic_symbol (struct bfd_link_info *info ATTRIBUTE_UNUSED, |
| 3766 | struct elf_link_hash_entry *h ATTRIBUTE_UNUSED) |
| 3767 | { |
| 3768 | bfd * dynobj; |
| 3769 | |
| 3770 | dynobj = elf_hash_table (info)->dynobj; |
| 3771 | |
| 3772 | /* Make sure we know what is going on here. */ |
| 3773 | BFD_ASSERT (dynobj != NULL |
| 3774 | && (h->weakdef != NULL |
| 3775 | || ((h->elf_link_hash_flags |
| 3776 | & ELF_LINK_HASH_DEF_DYNAMIC) != 0 |
| 3777 | && (h->elf_link_hash_flags |
| 3778 | & ELF_LINK_HASH_REF_REGULAR) != 0 |
| 3779 | && (h->elf_link_hash_flags |
| 3780 | & ELF_LINK_HASH_DEF_REGULAR) == 0))); |
| 3781 | |
| 3782 | /* If this is a weak symbol, and there is a real definition, the |
| 3783 | processor independent code will have arranged for us to see the |
| 3784 | real definition first, and we can just use the same value. */ |
| 3785 | if (h->weakdef != NULL) |
| 3786 | { |
| 3787 | BFD_ASSERT (h->weakdef->root.type == bfd_link_hash_defined |
| 3788 | || h->weakdef->root.type == bfd_link_hash_defweak); |
| 3789 | h->root.u.def.section = h->weakdef->root.u.def.section; |
| 3790 | h->root.u.def.value = h->weakdef->root.u.def.value; |
| 3791 | } |
| 3792 | |
| 3793 | return TRUE; |
| 3794 | } |
| 3795 | |
| 3796 | /* Perform any actions needed for dynamic symbols. */ |
| 3797 | |
| 3798 | static bfd_boolean |
| 3799 | elf32_frv_finish_dynamic_symbol (bfd *output_bfd ATTRIBUTE_UNUSED, |
| 3800 | struct bfd_link_info *info ATTRIBUTE_UNUSED, |
| 3801 | struct elf_link_hash_entry *h ATTRIBUTE_UNUSED, |
| 3802 | Elf_Internal_Sym *sym ATTRIBUTE_UNUSED) |
| 3803 | { |
| 3804 | return TRUE; |
| 3805 | } |
| 3806 | |
| 3807 | /* Decide whether to attempt to turn absptr or lsda encodings in |
| 3808 | shared libraries into pcrel within the given input section. */ |
| 3809 | |
| 3810 | static bfd_boolean |
| 3811 | frv_elf_use_relative_eh_frame (bfd *input_bfd, |
| 3812 | struct bfd_link_info *info ATTRIBUTE_UNUSED, |
| 3813 | asection *eh_frame_section ATTRIBUTE_UNUSED) |
| 3814 | { |
| 3815 | /* We can't use PC-relative encodings in FDPIC binaries, in general. */ |
| 3816 | if (elf_elfheader (input_bfd)->e_flags & EF_FRV_FDPIC) |
| 3817 | return FALSE; |
| 3818 | |
| 3819 | return TRUE; |
| 3820 | } |
| 3821 | |
| 3822 | /* Adjust the contents of an eh_frame_hdr section before they're output. */ |
| 3823 | |
| 3824 | static bfd_byte |
| 3825 | frv_elf_encode_eh_address (bfd *abfd, |
| 3826 | struct bfd_link_info *info, |
| 3827 | asection *osec, bfd_vma offset, |
| 3828 | asection *loc_sec, bfd_vma loc_offset, |
| 3829 | bfd_vma *encoded) |
| 3830 | { |
| 3831 | struct elf_link_hash_entry *h; |
| 3832 | |
| 3833 | /* Non-FDPIC binaries can use PC-relative encodings. */ |
| 3834 | if (! (elf_elfheader (abfd)->e_flags & EF_FRV_FDPIC)) |
| 3835 | return _bfd_elf_encode_eh_address (abfd, info, osec, offset, |
| 3836 | loc_sec, loc_offset, encoded); |
| 3837 | |
| 3838 | h = elf_hash_table (info)->hgot; |
| 3839 | BFD_ASSERT (h && h->root.type == bfd_link_hash_defined); |
| 3840 | |
| 3841 | if (! h || (_frv_osec_to_segment (abfd, osec) |
| 3842 | == _frv_osec_to_segment (abfd, loc_sec->output_section))) |
| 3843 | return _bfd_elf_encode_eh_address (abfd, info, osec, offset, |
| 3844 | loc_sec, loc_offset, encoded); |
| 3845 | |
| 3846 | BFD_ASSERT (_frv_osec_to_segment (abfd, osec) |
| 3847 | == _frv_osec_to_segment (abfd, |
| 3848 | h->root.u.def.section->output_section)); |
| 3849 | |
| 3850 | *encoded = osec->vma + offset |
| 3851 | - (h->root.u.def.value |
| 3852 | + h->root.u.def.section->output_section->vma |
| 3853 | + h->root.u.def.section->output_offset); |
| 3854 | |
| 3855 | return DW_EH_PE_datarel | DW_EH_PE_sdata4; |
| 3856 | } |
| 3857 | |
| 3858 | /* Look through the relocs for a section during the first phase. |
| 3859 | |
| 3860 | Besides handling virtual table relocs for gc, we have to deal with |
| 3861 | all sorts of PIC-related relocations. We describe below the |
| 3862 | general plan on how to handle such relocations, even though we only |
| 3863 | collect information at this point, storing them in hash tables for |
| 3864 | perusal of later passes. |
| 3865 | |
| 3866 | 32 relocations are propagated to the linker output when creating |
| 3867 | position-independent output. LO16 and HI16 relocations are not |
| 3868 | supposed to be encountered in this case. |
| 3869 | |
| 3870 | LABEL16 should always be resolvable by the linker, since it's only |
| 3871 | used by branches. |
| 3872 | |
| 3873 | LABEL24, on the other hand, is used by calls. If it turns out that |
| 3874 | the target of a call is a dynamic symbol, a PLT entry must be |
| 3875 | created for it, which triggers the creation of a private function |
| 3876 | descriptor and, unless lazy binding is disabled, a lazy PLT entry. |
| 3877 | |
| 3878 | GPREL relocations require the referenced symbol to be in the same |
| 3879 | segment as _gp, but this can only be checked later. |
| 3880 | |
| 3881 | All GOT, GOTOFF and FUNCDESC relocations require a .got section to |
| 3882 | exist. LABEL24 might as well, since it may require a PLT entry, |
| 3883 | that will require a got. |
| 3884 | |
| 3885 | Non-FUNCDESC GOT relocations require a GOT entry to be created |
| 3886 | regardless of whether the symbol is dynamic. However, since a |
| 3887 | global symbol that turns out to not be exported may have the same |
| 3888 | address of a non-dynamic symbol, we don't assign GOT entries at |
| 3889 | this point, such that we can share them in this case. A relocation |
| 3890 | for the GOT entry always has to be created, be it to offset a |
| 3891 | private symbol by the section load address, be it to get the symbol |
| 3892 | resolved dynamically. |
| 3893 | |
| 3894 | FUNCDESC GOT relocations require a GOT entry to be created, and |
| 3895 | handled as if a FUNCDESC relocation was applied to the GOT entry in |
| 3896 | an object file. |
| 3897 | |
| 3898 | FUNCDESC relocations referencing a symbol that turns out to NOT be |
| 3899 | dynamic cause a private function descriptor to be created. The |
| 3900 | FUNCDESC relocation then decays to a 32 relocation that points at |
| 3901 | the private descriptor. If the symbol is dynamic, the FUNCDESC |
| 3902 | relocation is propagated to the linker output, such that the |
| 3903 | dynamic linker creates the canonical descriptor, pointing to the |
| 3904 | dynamically-resolved definition of the function. |
| 3905 | |
| 3906 | Non-FUNCDESC GOTOFF relocations must always refer to non-dynamic |
| 3907 | symbols that are assigned to the same segment as the GOT, but we |
| 3908 | can only check this later, after we know the complete set of |
| 3909 | symbols defined and/or exported. |
| 3910 | |
| 3911 | FUNCDESC GOTOFF relocations require a function descriptor to be |
| 3912 | created and, unless lazy binding is disabled or the symbol is not |
| 3913 | dynamic, a lazy PLT entry. Since we can't tell at this point |
| 3914 | whether a symbol is going to be dynamic, we have to decide later |
| 3915 | whether to create a lazy PLT entry or bind the descriptor directly |
| 3916 | to the private function. |
| 3917 | |
| 3918 | FUNCDESC_VALUE relocations are not supposed to be present in object |
| 3919 | files, but they may very well be simply propagated to the linker |
| 3920 | output, since they have no side effect. |
| 3921 | |
| 3922 | |
| 3923 | A function descriptor always requires a FUNCDESC_VALUE relocation. |
| 3924 | Whether it's in .plt.rel or not depends on whether lazy binding is |
| 3925 | enabled and on whether the referenced symbol is dynamic. |
| 3926 | |
| 3927 | The existence of a lazy PLT requires the resolverStub lazy PLT |
| 3928 | entry to be present. |
| 3929 | |
| 3930 | |
| 3931 | As for assignment of GOT, PLT and lazy PLT entries, and private |
| 3932 | descriptors, we might do them all sequentially, but we can do |
| 3933 | better than that. For example, we can place GOT entries and |
| 3934 | private function descriptors referenced using 12-bit operands |
| 3935 | closer to the PIC register value, such that these relocations don't |
| 3936 | overflow. Those that are only referenced with LO16 relocations |
| 3937 | could come next, but we may as well place PLT-required function |
| 3938 | descriptors in the 12-bit range to make them shorter. Symbols |
| 3939 | referenced with LO16/HI16 may come next, but we may place |
| 3940 | additional function descriptors in the 16-bit range if we can |
| 3941 | reliably tell that we've already placed entries that are ever |
| 3942 | referenced with only LO16. PLT entries are therefore generated as |
| 3943 | small as possible, while not introducing relocation overflows in |
| 3944 | GOT or FUNCDESC_GOTOFF relocations. Lazy PLT entries could be |
| 3945 | generated before or after PLT entries, but not intermingled with |
| 3946 | them, such that we can have more lazy PLT entries in range for a |
| 3947 | branch to the resolverStub. The resolverStub should be emitted at |
| 3948 | the most distant location from the first lazy PLT entry such that |
| 3949 | it's still in range for a branch, or closer, if there isn't a need |
| 3950 | for so many lazy PLT entries. Additional lazy PLT entries may be |
| 3951 | emitted after the resolverStub, as long as branches are still in |
| 3952 | range. If the branch goes out of range, longer lazy PLT entries |
| 3953 | are emitted. |
| 3954 | |
| 3955 | We could further optimize PLT and lazy PLT entries by giving them |
| 3956 | priority in assignment to closer-to-gr17 locations depending on the |
| 3957 | number of occurrences of references to them (assuming a function |
| 3958 | that's called more often is more important for performance, so its |
| 3959 | PLT entry should be faster), or taking hints from the compiler. |
| 3960 | Given infinite time and money... :-) */ |
| 3961 | |
| 3962 | static bfd_boolean |
| 3963 | elf32_frv_check_relocs (abfd, info, sec, relocs) |
| 3964 | bfd *abfd; |
| 3965 | struct bfd_link_info *info; |
| 3966 | asection *sec; |
| 3967 | const Elf_Internal_Rela *relocs; |
| 3968 | { |
| 3969 | Elf_Internal_Shdr *symtab_hdr; |
| 3970 | struct elf_link_hash_entry **sym_hashes, **sym_hashes_end; |
| 3971 | const Elf_Internal_Rela *rel; |
| 3972 | const Elf_Internal_Rela *rel_end; |
| 3973 | bfd *dynobj; |
| 3974 | struct frv_pic_relocs_info *picrel; |
| 3975 | |
| 3976 | if (info->relocatable) |
| 3977 | return TRUE; |
| 3978 | |
| 3979 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; |
| 3980 | sym_hashes = elf_sym_hashes (abfd); |
| 3981 | sym_hashes_end = sym_hashes + symtab_hdr->sh_size/sizeof(Elf32_External_Sym); |
| 3982 | if (!elf_bad_symtab (abfd)) |
| 3983 | sym_hashes_end -= symtab_hdr->sh_info; |
| 3984 | |
| 3985 | dynobj = elf_hash_table (info)->dynobj; |
| 3986 | rel_end = relocs + sec->reloc_count; |
| 3987 | for (rel = relocs; rel < rel_end; rel++) |
| 3988 | { |
| 3989 | struct elf_link_hash_entry *h; |
| 3990 | unsigned long r_symndx; |
| 3991 | |
| 3992 | r_symndx = ELF32_R_SYM (rel->r_info); |
| 3993 | if (r_symndx < symtab_hdr->sh_info) |
| 3994 | h = NULL; |
| 3995 | else |
| 3996 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; |
| 3997 | |
| 3998 | switch (ELF32_R_TYPE (rel->r_info)) |
| 3999 | { |
| 4000 | case R_FRV_LABEL24: |
| 4001 | case R_FRV_32: |
| 4002 | case R_FRV_GOT12: |
| 4003 | case R_FRV_GOTHI: |
| 4004 | case R_FRV_GOTLO: |
| 4005 | case R_FRV_FUNCDESC_GOT12: |
| 4006 | case R_FRV_FUNCDESC_GOTHI: |
| 4007 | case R_FRV_FUNCDESC_GOTLO: |
| 4008 | case R_FRV_GOTOFF12: |
| 4009 | case R_FRV_GOTOFFHI: |
| 4010 | case R_FRV_GOTOFFLO: |
| 4011 | case R_FRV_FUNCDESC_GOTOFF12: |
| 4012 | case R_FRV_FUNCDESC_GOTOFFHI: |
| 4013 | case R_FRV_FUNCDESC_GOTOFFLO: |
| 4014 | case R_FRV_FUNCDESC: |
| 4015 | case R_FRV_FUNCDESC_VALUE: |
| 4016 | if (! dynobj) |
| 4017 | { |
| 4018 | elf_hash_table (info)->dynobj = dynobj = abfd; |
| 4019 | if (! _frv_create_got_section (abfd, info)) |
| 4020 | return FALSE; |
| 4021 | } |
| 4022 | if (h != NULL) |
| 4023 | { |
| 4024 | if (h->dynindx == -1) |
| 4025 | switch (ELF_ST_VISIBILITY (h->other)) |
| 4026 | { |
| 4027 | case STV_INTERNAL: |
| 4028 | case STV_HIDDEN: |
| 4029 | break; |
| 4030 | default: |
| 4031 | bfd_elf32_link_record_dynamic_symbol (info, h); |
| 4032 | break; |
| 4033 | } |
| 4034 | picrel |
| 4035 | = frv_pic_relocs_info_for_global (frv_relocs_info (info), |
| 4036 | abfd, h, |
| 4037 | rel->r_addend, INSERT); |
| 4038 | } |
| 4039 | else |
| 4040 | picrel = frv_pic_relocs_info_for_local (frv_relocs_info (info), |
| 4041 | abfd, r_symndx, |
| 4042 | rel->r_addend, INSERT); |
| 4043 | if (! picrel) |
| 4044 | return FALSE; |
| 4045 | break; |
| 4046 | |
| 4047 | default: |
| 4048 | picrel = NULL; |
| 4049 | break; |
| 4050 | } |
| 4051 | |
| 4052 | switch (ELF32_R_TYPE (rel->r_info)) |
| 4053 | { |
| 4054 | case R_FRV_LABEL24: |
| 4055 | picrel->call = 1; |
| 4056 | break; |
| 4057 | |
| 4058 | case R_FRV_FUNCDESC_VALUE: |
| 4059 | picrel->relocsfdv++; |
| 4060 | if (bfd_get_section_flags (abfd, sec) & SEC_ALLOC) |
| 4061 | picrel->relocs32--; |
| 4062 | /* Fall through. */ |
| 4063 | case R_FRV_32: |
| 4064 | picrel->sym = 1; |
| 4065 | if (bfd_get_section_flags (abfd, sec) & SEC_ALLOC) |
| 4066 | picrel->relocs32++; |
| 4067 | break; |
| 4068 | |
| 4069 | case R_FRV_GOT12: |
| 4070 | picrel->got12 = 1; |
| 4071 | break; |
| 4072 | |
| 4073 | case R_FRV_GOTHI: |
| 4074 | case R_FRV_GOTLO: |
| 4075 | picrel->gothilo = 1; |
| 4076 | break; |
| 4077 | |
| 4078 | case R_FRV_FUNCDESC_GOT12: |
| 4079 | picrel->fdgot12 = 1; |
| 4080 | break; |
| 4081 | |
| 4082 | case R_FRV_FUNCDESC_GOTHI: |
| 4083 | case R_FRV_FUNCDESC_GOTLO: |
| 4084 | picrel->fdgothilo = 1; |
| 4085 | break; |
| 4086 | |
| 4087 | case R_FRV_GOTOFF12: |
| 4088 | case R_FRV_GOTOFFHI: |
| 4089 | case R_FRV_GOTOFFLO: |
| 4090 | picrel->gotoff = 1; |
| 4091 | break; |
| 4092 | |
| 4093 | case R_FRV_FUNCDESC_GOTOFF12: |
| 4094 | picrel->fdgoff12 = 1; |
| 4095 | break; |
| 4096 | |
| 4097 | case R_FRV_FUNCDESC_GOTOFFHI: |
| 4098 | case R_FRV_FUNCDESC_GOTOFFLO: |
| 4099 | picrel->fdgoffhilo = 1; |
| 4100 | break; |
| 4101 | |
| 4102 | case R_FRV_FUNCDESC: |
| 4103 | picrel->fd = 1; |
| 4104 | picrel->relocsfd++; |
| 4105 | break; |
| 4106 | |
| 4107 | /* This relocation describes the C++ object vtable hierarchy. |
| 4108 | Reconstruct it for later use during GC. */ |
| 4109 | case R_FRV_GNU_VTINHERIT: |
| 4110 | if (!_bfd_elf32_gc_record_vtinherit (abfd, sec, h, rel->r_offset)) |
| 4111 | return FALSE; |
| 4112 | break; |
| 4113 | |
| 4114 | /* This relocation describes which C++ vtable entries are actually |
| 4115 | used. Record for later use during GC. */ |
| 4116 | case R_FRV_GNU_VTENTRY: |
| 4117 | if (!_bfd_elf32_gc_record_vtentry (abfd, sec, h, rel->r_addend)) |
| 4118 | return FALSE; |
| 4119 | break; |
| 4120 | } |
| 4121 | } |
| 4122 | |
| 4123 | return TRUE; |
| 4124 | } |
| 4125 | |
| 4126 | \f |
| 4127 | /* Return the machine subcode from the ELF e_flags header. */ |
| 4128 | |
| 4129 | static int |
| 4130 | elf32_frv_machine (abfd) |
| 4131 | bfd *abfd; |
| 4132 | { |
| 4133 | switch (elf_elfheader (abfd)->e_flags & EF_FRV_CPU_MASK) |
| 4134 | { |
| 4135 | default: break; |
| 4136 | case EF_FRV_CPU_FR550: return bfd_mach_fr550; |
| 4137 | case EF_FRV_CPU_FR500: return bfd_mach_fr500; |
| 4138 | case EF_FRV_CPU_FR450: return bfd_mach_fr450; |
| 4139 | case EF_FRV_CPU_FR405: return bfd_mach_fr400; |
| 4140 | case EF_FRV_CPU_FR400: return bfd_mach_fr400; |
| 4141 | case EF_FRV_CPU_FR300: return bfd_mach_fr300; |
| 4142 | case EF_FRV_CPU_SIMPLE: return bfd_mach_frvsimple; |
| 4143 | case EF_FRV_CPU_TOMCAT: return bfd_mach_frvtomcat; |
| 4144 | } |
| 4145 | |
| 4146 | return bfd_mach_frv; |
| 4147 | } |
| 4148 | |
| 4149 | /* Set the right machine number for a FRV ELF file. */ |
| 4150 | |
| 4151 | static bfd_boolean |
| 4152 | elf32_frv_object_p (abfd) |
| 4153 | bfd *abfd; |
| 4154 | { |
| 4155 | bfd_default_set_arch_mach (abfd, bfd_arch_frv, elf32_frv_machine (abfd)); |
| 4156 | return TRUE; |
| 4157 | } |
| 4158 | \f |
| 4159 | /* Function to set the ELF flag bits. */ |
| 4160 | |
| 4161 | static bfd_boolean |
| 4162 | frv_elf_set_private_flags (abfd, flags) |
| 4163 | bfd *abfd; |
| 4164 | flagword flags; |
| 4165 | { |
| 4166 | elf_elfheader (abfd)->e_flags = flags; |
| 4167 | elf_flags_init (abfd) = TRUE; |
| 4168 | return TRUE; |
| 4169 | } |
| 4170 | |
| 4171 | /* Copy backend specific data from one object module to another. */ |
| 4172 | |
| 4173 | static bfd_boolean |
| 4174 | frv_elf_copy_private_bfd_data (ibfd, obfd) |
| 4175 | bfd *ibfd; |
| 4176 | bfd *obfd; |
| 4177 | { |
| 4178 | if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour |
| 4179 | || bfd_get_flavour (obfd) != bfd_target_elf_flavour) |
| 4180 | return TRUE; |
| 4181 | |
| 4182 | BFD_ASSERT (!elf_flags_init (obfd) |
| 4183 | || elf_elfheader (obfd)->e_flags == elf_elfheader (ibfd)->e_flags); |
| 4184 | |
| 4185 | elf_elfheader (obfd)->e_flags = elf_elfheader (ibfd)->e_flags; |
| 4186 | elf_flags_init (obfd) = TRUE; |
| 4187 | return TRUE; |
| 4188 | } |
| 4189 | |
| 4190 | /* Return true if the architecture described by elf header flag |
| 4191 | EXTENSION is an extension of the architecture described by BASE. */ |
| 4192 | |
| 4193 | static bfd_boolean |
| 4194 | frv_elf_arch_extension_p (flagword base, flagword extension) |
| 4195 | { |
| 4196 | if (base == extension) |
| 4197 | return TRUE; |
| 4198 | |
| 4199 | /* CPU_GENERIC code can be merged with code for a specific |
| 4200 | architecture, in which case the result is marked as being |
| 4201 | for the specific architecture. Everything is therefore |
| 4202 | an extension of CPU_GENERIC. */ |
| 4203 | if (base == EF_FRV_CPU_GENERIC) |
| 4204 | return TRUE; |
| 4205 | |
| 4206 | if (extension == EF_FRV_CPU_FR450) |
| 4207 | if (base == EF_FRV_CPU_FR400 || base == EF_FRV_CPU_FR405) |
| 4208 | return TRUE; |
| 4209 | |
| 4210 | if (extension == EF_FRV_CPU_FR405) |
| 4211 | if (base == EF_FRV_CPU_FR400) |
| 4212 | return TRUE; |
| 4213 | |
| 4214 | return FALSE; |
| 4215 | } |
| 4216 | |
| 4217 | /* Merge backend specific data from an object file to the output |
| 4218 | object file when linking. */ |
| 4219 | |
| 4220 | static bfd_boolean |
| 4221 | frv_elf_merge_private_bfd_data (ibfd, obfd) |
| 4222 | bfd *ibfd; |
| 4223 | bfd *obfd; |
| 4224 | { |
| 4225 | flagword old_flags, old_partial; |
| 4226 | flagword new_flags, new_partial; |
| 4227 | bfd_boolean error = FALSE; |
| 4228 | char new_opt[80]; |
| 4229 | char old_opt[80]; |
| 4230 | |
| 4231 | new_opt[0] = old_opt[0] = '\0'; |
| 4232 | new_flags = elf_elfheader (ibfd)->e_flags; |
| 4233 | old_flags = elf_elfheader (obfd)->e_flags; |
| 4234 | |
| 4235 | if (new_flags & EF_FRV_FDPIC) |
| 4236 | new_flags &= ~EF_FRV_PIC; |
| 4237 | |
| 4238 | #ifdef DEBUG |
| 4239 | (*_bfd_error_handler) ("old_flags = 0x%.8lx, new_flags = 0x%.8lx, init = %s, filename = %s", |
| 4240 | old_flags, new_flags, elf_flags_init (obfd) ? "yes" : "no", |
| 4241 | bfd_get_filename (ibfd)); |
| 4242 | #endif |
| 4243 | |
| 4244 | if (!elf_flags_init (obfd)) /* First call, no flags set. */ |
| 4245 | { |
| 4246 | elf_flags_init (obfd) = TRUE; |
| 4247 | old_flags = new_flags; |
| 4248 | } |
| 4249 | |
| 4250 | else if (new_flags == old_flags) /* Compatible flags are ok. */ |
| 4251 | ; |
| 4252 | |
| 4253 | else /* Possibly incompatible flags. */ |
| 4254 | { |
| 4255 | /* Warn if different # of gprs are used. Note, 0 means nothing is |
| 4256 | said about the size of gprs. */ |
| 4257 | new_partial = (new_flags & EF_FRV_GPR_MASK); |
| 4258 | old_partial = (old_flags & EF_FRV_GPR_MASK); |
| 4259 | if (new_partial == old_partial) |
| 4260 | ; |
| 4261 | |
| 4262 | else if (new_partial == 0) |
| 4263 | ; |
| 4264 | |
| 4265 | else if (old_partial == 0) |
| 4266 | old_flags |= new_partial; |
| 4267 | |
| 4268 | else |
| 4269 | { |
| 4270 | switch (new_partial) |
| 4271 | { |
| 4272 | default: strcat (new_opt, " -mgpr-??"); break; |
| 4273 | case EF_FRV_GPR_32: strcat (new_opt, " -mgpr-32"); break; |
| 4274 | case EF_FRV_GPR_64: strcat (new_opt, " -mgpr-64"); break; |
| 4275 | } |
| 4276 | |
| 4277 | switch (old_partial) |
| 4278 | { |
| 4279 | default: strcat (old_opt, " -mgpr-??"); break; |
| 4280 | case EF_FRV_GPR_32: strcat (old_opt, " -mgpr-32"); break; |
| 4281 | case EF_FRV_GPR_64: strcat (old_opt, " -mgpr-64"); break; |
| 4282 | } |
| 4283 | } |
| 4284 | |
| 4285 | /* Warn if different # of fprs are used. Note, 0 means nothing is |
| 4286 | said about the size of fprs. */ |
| 4287 | new_partial = (new_flags & EF_FRV_FPR_MASK); |
| 4288 | old_partial = (old_flags & EF_FRV_FPR_MASK); |
| 4289 | if (new_partial == old_partial) |
| 4290 | ; |
| 4291 | |
| 4292 | else if (new_partial == 0) |
| 4293 | ; |
| 4294 | |
| 4295 | else if (old_partial == 0) |
| 4296 | old_flags |= new_partial; |
| 4297 | |
| 4298 | else |
| 4299 | { |
| 4300 | switch (new_partial) |
| 4301 | { |
| 4302 | default: strcat (new_opt, " -mfpr-?"); break; |
| 4303 | case EF_FRV_FPR_32: strcat (new_opt, " -mfpr-32"); break; |
| 4304 | case EF_FRV_FPR_64: strcat (new_opt, " -mfpr-64"); break; |
| 4305 | case EF_FRV_FPR_NONE: strcat (new_opt, " -msoft-float"); break; |
| 4306 | } |
| 4307 | |
| 4308 | switch (old_partial) |
| 4309 | { |
| 4310 | default: strcat (old_opt, " -mfpr-?"); break; |
| 4311 | case EF_FRV_FPR_32: strcat (old_opt, " -mfpr-32"); break; |
| 4312 | case EF_FRV_FPR_64: strcat (old_opt, " -mfpr-64"); break; |
| 4313 | case EF_FRV_FPR_NONE: strcat (old_opt, " -msoft-float"); break; |
| 4314 | } |
| 4315 | } |
| 4316 | |
| 4317 | /* Warn if different dword support was used. Note, 0 means nothing is |
| 4318 | said about the dword support. */ |
| 4319 | new_partial = (new_flags & EF_FRV_DWORD_MASK); |
| 4320 | old_partial = (old_flags & EF_FRV_DWORD_MASK); |
| 4321 | if (new_partial == old_partial) |
| 4322 | ; |
| 4323 | |
| 4324 | else if (new_partial == 0) |
| 4325 | ; |
| 4326 | |
| 4327 | else if (old_partial == 0) |
| 4328 | old_flags |= new_partial; |
| 4329 | |
| 4330 | else |
| 4331 | { |
| 4332 | switch (new_partial) |
| 4333 | { |
| 4334 | default: strcat (new_opt, " -mdword-?"); break; |
| 4335 | case EF_FRV_DWORD_YES: strcat (new_opt, " -mdword"); break; |
| 4336 | case EF_FRV_DWORD_NO: strcat (new_opt, " -mno-dword"); break; |
| 4337 | } |
| 4338 | |
| 4339 | switch (old_partial) |
| 4340 | { |
| 4341 | default: strcat (old_opt, " -mdword-?"); break; |
| 4342 | case EF_FRV_DWORD_YES: strcat (old_opt, " -mdword"); break; |
| 4343 | case EF_FRV_DWORD_NO: strcat (old_opt, " -mno-dword"); break; |
| 4344 | } |
| 4345 | } |
| 4346 | |
| 4347 | /* Or in flags that accumulate (ie, if one module uses it, mark that the |
| 4348 | feature is used. */ |
| 4349 | old_flags |= new_flags & (EF_FRV_DOUBLE |
| 4350 | | EF_FRV_MEDIA |
| 4351 | | EF_FRV_MULADD |
| 4352 | | EF_FRV_NON_PIC_RELOCS); |
| 4353 | |
| 4354 | /* If any module was compiled without -G0, clear the G0 bit. */ |
| 4355 | old_flags = ((old_flags & ~ EF_FRV_G0) |
| 4356 | | (old_flags & new_flags & EF_FRV_G0)); |
| 4357 | |
| 4358 | /* If any module was compiled without -mnopack, clear the mnopack bit. */ |
| 4359 | old_flags = ((old_flags & ~ EF_FRV_NOPACK) |
| 4360 | | (old_flags & new_flags & EF_FRV_NOPACK)); |
| 4361 | |
| 4362 | /* We don't have to do anything if the pic flags are the same, or the new |
| 4363 | module(s) were compiled with -mlibrary-pic. */ |
| 4364 | new_partial = (new_flags & EF_FRV_PIC_FLAGS); |
| 4365 | old_partial = (old_flags & EF_FRV_PIC_FLAGS); |
| 4366 | if ((new_partial == old_partial) || ((new_partial & EF_FRV_LIBPIC) != 0)) |
| 4367 | ; |
| 4368 | |
| 4369 | /* If the old module(s) were compiled with -mlibrary-pic, copy in the pic |
| 4370 | flags if any from the new module. */ |
| 4371 | else if ((old_partial & EF_FRV_LIBPIC) != 0) |
| 4372 | old_flags = (old_flags & ~ EF_FRV_PIC_FLAGS) | new_partial; |
| 4373 | |
| 4374 | /* If we have mixtures of -fpic and -fPIC, or in both bits. */ |
| 4375 | else if (new_partial != 0 && old_partial != 0) |
| 4376 | old_flags |= new_partial; |
| 4377 | |
| 4378 | /* One module was compiled for pic and the other was not, see if we have |
| 4379 | had any relocations that are not pic-safe. */ |
| 4380 | else |
| 4381 | { |
| 4382 | if ((old_flags & EF_FRV_NON_PIC_RELOCS) == 0) |
| 4383 | old_flags |= new_partial; |
| 4384 | else |
| 4385 | { |
| 4386 | old_flags &= ~ EF_FRV_PIC_FLAGS; |
| 4387 | #ifndef FRV_NO_PIC_ERROR |
| 4388 | error = TRUE; |
| 4389 | (*_bfd_error_handler) |
| 4390 | (_("%s: compiled with %s and linked with modules that use non-pic relocations"), |
| 4391 | bfd_get_filename (ibfd), |
| 4392 | (new_flags & EF_FRV_BIGPIC) ? "-fPIC" : "-fpic"); |
| 4393 | #endif |
| 4394 | } |
| 4395 | } |
| 4396 | |
| 4397 | /* Warn if different cpu is used (allow a specific cpu to override |
| 4398 | the generic cpu). */ |
| 4399 | new_partial = (new_flags & EF_FRV_CPU_MASK); |
| 4400 | old_partial = (old_flags & EF_FRV_CPU_MASK); |
| 4401 | if (frv_elf_arch_extension_p (new_partial, old_partial)) |
| 4402 | ; |
| 4403 | |
| 4404 | else if (frv_elf_arch_extension_p (old_partial, new_partial)) |
| 4405 | old_flags = (old_flags & ~EF_FRV_CPU_MASK) | new_partial; |
| 4406 | |
| 4407 | else |
| 4408 | { |
| 4409 | switch (new_partial) |
| 4410 | { |
| 4411 | default: strcat (new_opt, " -mcpu=?"); break; |
| 4412 | case EF_FRV_CPU_GENERIC: strcat (new_opt, " -mcpu=frv"); break; |
| 4413 | case EF_FRV_CPU_SIMPLE: strcat (new_opt, " -mcpu=simple"); break; |
| 4414 | case EF_FRV_CPU_FR550: strcat (new_opt, " -mcpu=fr550"); break; |
| 4415 | case EF_FRV_CPU_FR500: strcat (new_opt, " -mcpu=fr500"); break; |
| 4416 | case EF_FRV_CPU_FR450: strcat (new_opt, " -mcpu=fr450"); break; |
| 4417 | case EF_FRV_CPU_FR405: strcat (new_opt, " -mcpu=fr405"); break; |
| 4418 | case EF_FRV_CPU_FR400: strcat (new_opt, " -mcpu=fr400"); break; |
| 4419 | case EF_FRV_CPU_FR300: strcat (new_opt, " -mcpu=fr300"); break; |
| 4420 | case EF_FRV_CPU_TOMCAT: strcat (new_opt, " -mcpu=tomcat"); break; |
| 4421 | } |
| 4422 | |
| 4423 | switch (old_partial) |
| 4424 | { |
| 4425 | default: strcat (old_opt, " -mcpu=?"); break; |
| 4426 | case EF_FRV_CPU_GENERIC: strcat (old_opt, " -mcpu=frv"); break; |
| 4427 | case EF_FRV_CPU_SIMPLE: strcat (old_opt, " -mcpu=simple"); break; |
| 4428 | case EF_FRV_CPU_FR550: strcat (old_opt, " -mcpu=fr550"); break; |
| 4429 | case EF_FRV_CPU_FR500: strcat (old_opt, " -mcpu=fr500"); break; |
| 4430 | case EF_FRV_CPU_FR450: strcat (old_opt, " -mcpu=fr450"); break; |
| 4431 | case EF_FRV_CPU_FR405: strcat (old_opt, " -mcpu=fr405"); break; |
| 4432 | case EF_FRV_CPU_FR400: strcat (old_opt, " -mcpu=fr400"); break; |
| 4433 | case EF_FRV_CPU_FR300: strcat (old_opt, " -mcpu=fr300"); break; |
| 4434 | case EF_FRV_CPU_TOMCAT: strcat (old_opt, " -mcpu=tomcat"); break; |
| 4435 | } |
| 4436 | } |
| 4437 | |
| 4438 | /* Print out any mismatches from above. */ |
| 4439 | if (new_opt[0]) |
| 4440 | { |
| 4441 | error = TRUE; |
| 4442 | (*_bfd_error_handler) |
| 4443 | (_("%s: compiled with %s and linked with modules compiled with %s"), |
| 4444 | bfd_get_filename (ibfd), new_opt, old_opt); |
| 4445 | } |
| 4446 | |
| 4447 | /* Warn about any other mismatches */ |
| 4448 | new_partial = (new_flags & ~ EF_FRV_ALL_FLAGS); |
| 4449 | old_partial = (old_flags & ~ EF_FRV_ALL_FLAGS); |
| 4450 | if (new_partial != old_partial) |
| 4451 | { |
| 4452 | old_flags |= new_partial; |
| 4453 | error = TRUE; |
| 4454 | (*_bfd_error_handler) |
| 4455 | (_("%s: uses different unknown e_flags (0x%lx) fields than previous modules (0x%lx)"), |
| 4456 | bfd_get_filename (ibfd), (long)new_partial, (long)old_partial); |
| 4457 | } |
| 4458 | } |
| 4459 | |
| 4460 | /* If the cpu is -mcpu=simple, then set the -mnopack bit. */ |
| 4461 | if ((old_flags & EF_FRV_CPU_MASK) == EF_FRV_CPU_SIMPLE) |
| 4462 | old_flags |= EF_FRV_NOPACK; |
| 4463 | |
| 4464 | /* Update the old flags now with changes made above. */ |
| 4465 | old_partial = elf_elfheader (obfd)->e_flags & EF_FRV_CPU_MASK; |
| 4466 | elf_elfheader (obfd)->e_flags = old_flags; |
| 4467 | if (old_partial != (old_flags & EF_FRV_CPU_MASK)) |
| 4468 | bfd_default_set_arch_mach (obfd, bfd_arch_frv, elf32_frv_machine (obfd)); |
| 4469 | |
| 4470 | if (error) |
| 4471 | bfd_set_error (bfd_error_bad_value); |
| 4472 | |
| 4473 | return !error; |
| 4474 | } |
| 4475 | |
| 4476 | \f |
| 4477 | bfd_boolean |
| 4478 | frv_elf_print_private_bfd_data (abfd, ptr) |
| 4479 | bfd *abfd; |
| 4480 | PTR ptr; |
| 4481 | { |
| 4482 | FILE *file = (FILE *) ptr; |
| 4483 | flagword flags; |
| 4484 | |
| 4485 | BFD_ASSERT (abfd != NULL && ptr != NULL); |
| 4486 | |
| 4487 | /* Print normal ELF private data. */ |
| 4488 | _bfd_elf_print_private_bfd_data (abfd, ptr); |
| 4489 | |
| 4490 | flags = elf_elfheader (abfd)->e_flags; |
| 4491 | fprintf (file, _("private flags = 0x%lx:"), (long)flags); |
| 4492 | |
| 4493 | switch (flags & EF_FRV_CPU_MASK) |
| 4494 | { |
| 4495 | default: break; |
| 4496 | case EF_FRV_CPU_SIMPLE: fprintf (file, " -mcpu=simple"); break; |
| 4497 | case EF_FRV_CPU_FR550: fprintf (file, " -mcpu=fr550"); break; |
| 4498 | case EF_FRV_CPU_FR500: fprintf (file, " -mcpu=fr500"); break; |
| 4499 | case EF_FRV_CPU_FR450: fprintf (file, " -mcpu=fr450"); break; |
| 4500 | case EF_FRV_CPU_FR405: fprintf (file, " -mcpu=fr405"); break; |
| 4501 | case EF_FRV_CPU_FR400: fprintf (file, " -mcpu=fr400"); break; |
| 4502 | case EF_FRV_CPU_FR300: fprintf (file, " -mcpu=fr300"); break; |
| 4503 | case EF_FRV_CPU_TOMCAT: fprintf (file, " -mcpu=tomcat"); break; |
| 4504 | } |
| 4505 | |
| 4506 | switch (flags & EF_FRV_GPR_MASK) |
| 4507 | { |
| 4508 | default: break; |
| 4509 | case EF_FRV_GPR_32: fprintf (file, " -mgpr-32"); break; |
| 4510 | case EF_FRV_GPR_64: fprintf (file, " -mgpr-64"); break; |
| 4511 | } |
| 4512 | |
| 4513 | switch (flags & EF_FRV_FPR_MASK) |
| 4514 | { |
| 4515 | default: break; |
| 4516 | case EF_FRV_FPR_32: fprintf (file, " -mfpr-32"); break; |
| 4517 | case EF_FRV_FPR_64: fprintf (file, " -mfpr-64"); break; |
| 4518 | case EF_FRV_FPR_NONE: fprintf (file, " -msoft-float"); break; |
| 4519 | } |
| 4520 | |
| 4521 | switch (flags & EF_FRV_DWORD_MASK) |
| 4522 | { |
| 4523 | default: break; |
| 4524 | case EF_FRV_DWORD_YES: fprintf (file, " -mdword"); break; |
| 4525 | case EF_FRV_DWORD_NO: fprintf (file, " -mno-dword"); break; |
| 4526 | } |
| 4527 | |
| 4528 | if (flags & EF_FRV_DOUBLE) |
| 4529 | fprintf (file, " -mdouble"); |
| 4530 | |
| 4531 | if (flags & EF_FRV_MEDIA) |
| 4532 | fprintf (file, " -mmedia"); |
| 4533 | |
| 4534 | if (flags & EF_FRV_MULADD) |
| 4535 | fprintf (file, " -mmuladd"); |
| 4536 | |
| 4537 | if (flags & EF_FRV_PIC) |
| 4538 | fprintf (file, " -fpic"); |
| 4539 | |
| 4540 | if (flags & EF_FRV_BIGPIC) |
| 4541 | fprintf (file, " -fPIC"); |
| 4542 | |
| 4543 | if (flags & EF_FRV_LIBPIC) |
| 4544 | fprintf (file, " -mlibrary-pic"); |
| 4545 | |
| 4546 | if (flags & EF_FRV_FDPIC) |
| 4547 | fprintf (file, " -mfdpic"); |
| 4548 | |
| 4549 | if (flags & EF_FRV_NON_PIC_RELOCS) |
| 4550 | fprintf (file, " non-pic relocations"); |
| 4551 | |
| 4552 | if (flags & EF_FRV_G0) |
| 4553 | fprintf (file, " -G0"); |
| 4554 | |
| 4555 | fputc ('\n', file); |
| 4556 | return TRUE; |
| 4557 | } |
| 4558 | |
| 4559 | \f |
| 4560 | #define ELF_ARCH bfd_arch_frv |
| 4561 | #define ELF_MACHINE_CODE EM_CYGNUS_FRV |
| 4562 | #define ELF_MAXPAGESIZE 0x1000 |
| 4563 | |
| 4564 | #define TARGET_BIG_SYM bfd_elf32_frv_vec |
| 4565 | #define TARGET_BIG_NAME "elf32-frv" |
| 4566 | |
| 4567 | #define elf_info_to_howto_rel frv_info_to_howto_rel |
| 4568 | #define elf_info_to_howto frv_info_to_howto_rela |
| 4569 | #define elf_backend_relocate_section elf32_frv_relocate_section |
| 4570 | #define elf_backend_gc_mark_hook elf32_frv_gc_mark_hook |
| 4571 | #define elf_backend_gc_sweep_hook elf32_frv_gc_sweep_hook |
| 4572 | #define elf_backend_check_relocs elf32_frv_check_relocs |
| 4573 | #define elf_backend_object_p elf32_frv_object_p |
| 4574 | #define elf_backend_add_symbol_hook elf32_frv_add_symbol_hook |
| 4575 | |
| 4576 | #define elf_backend_can_gc_sections 1 |
| 4577 | #define elf_backend_rela_normal 1 |
| 4578 | |
| 4579 | #define bfd_elf32_bfd_reloc_type_lookup frv_reloc_type_lookup |
| 4580 | #define bfd_elf32_bfd_set_private_flags frv_elf_set_private_flags |
| 4581 | #define bfd_elf32_bfd_copy_private_bfd_data frv_elf_copy_private_bfd_data |
| 4582 | #define bfd_elf32_bfd_merge_private_bfd_data frv_elf_merge_private_bfd_data |
| 4583 | #define bfd_elf32_bfd_print_private_bfd_data frv_elf_print_private_bfd_data |
| 4584 | |
| 4585 | #define bfd_elf32_bfd_link_hash_table_create frv_elf_link_hash_table_create |
| 4586 | #define elf_backend_always_size_sections \ |
| 4587 | elf32_frv_always_size_sections |
| 4588 | #define elf_backend_modify_segment_map \ |
| 4589 | elf32_frv_modify_segment_map |
| 4590 | |
| 4591 | #define elf_backend_create_dynamic_sections \ |
| 4592 | elf32_frv_create_dynamic_sections |
| 4593 | #define elf_backend_adjust_dynamic_symbol \ |
| 4594 | elf32_frv_adjust_dynamic_symbol |
| 4595 | #define elf_backend_size_dynamic_sections \ |
| 4596 | elf32_frv_size_dynamic_sections |
| 4597 | #define elf_backend_finish_dynamic_symbol \ |
| 4598 | elf32_frv_finish_dynamic_symbol |
| 4599 | #define elf_backend_finish_dynamic_sections \ |
| 4600 | elf32_frv_finish_dynamic_sections |
| 4601 | |
| 4602 | #define elf_backend_want_got_sym 1 |
| 4603 | #define elf_backend_got_header_size 0 |
| 4604 | #define elf_backend_want_got_plt 0 |
| 4605 | #define elf_backend_plt_readonly 1 |
| 4606 | #define elf_backend_want_plt_sym 0 |
| 4607 | #define elf_backend_plt_header_size 0 |
| 4608 | |
| 4609 | #define elf_backend_can_make_relative_eh_frame \ |
| 4610 | frv_elf_use_relative_eh_frame |
| 4611 | #define elf_backend_can_make_lsda_relative_eh_frame \ |
| 4612 | frv_elf_use_relative_eh_frame |
| 4613 | #define elf_backend_encode_eh_address frv_elf_encode_eh_address |
| 4614 | |
| 4615 | #define elf_backend_may_use_rel_p 1 |
| 4616 | #define elf_backend_may_use_rela_p 1 |
| 4617 | /* We use REL for dynamic relocations only. */ |
| 4618 | #define elf_backend_default_use_rela_p 1 |
| 4619 | |
| 4620 | #include "elf32-target.h" |