| 1 | /* Hitachi SH specific support for 32-bit ELF |
| 2 | Copyright 1996, 1997, 1998, 1999, 2000, 2001 |
| 3 | Free Software Foundation, Inc. |
| 4 | Contributed by Ian Lance Taylor, Cygnus Support. |
| 5 | |
| 6 | This file is part of BFD, the Binary File Descriptor library. |
| 7 | |
| 8 | This program is free software; you can redistribute it and/or modify |
| 9 | it under the terms of the GNU General Public License as published by |
| 10 | the Free Software Foundation; either version 2 of the License, or |
| 11 | (at your option) any later version. |
| 12 | |
| 13 | This program is distributed in the hope that it will be useful, |
| 14 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 16 | GNU General Public License for more details. |
| 17 | |
| 18 | You should have received a copy of the GNU General Public License |
| 19 | along with this program; if not, write to the Free Software |
| 20 | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ |
| 21 | |
| 22 | #include "bfd.h" |
| 23 | #include "sysdep.h" |
| 24 | #include "bfdlink.h" |
| 25 | #include "libbfd.h" |
| 26 | #include "elf-bfd.h" |
| 27 | #include "elf/sh.h" |
| 28 | |
| 29 | static bfd_reloc_status_type sh_elf_reloc |
| 30 | PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **)); |
| 31 | static bfd_reloc_status_type sh_elf_ignore_reloc |
| 32 | PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **)); |
| 33 | static reloc_howto_type *sh_elf_reloc_type_lookup |
| 34 | PARAMS ((bfd *, bfd_reloc_code_real_type)); |
| 35 | static void sh_elf_info_to_howto |
| 36 | PARAMS ((bfd *, arelent *, Elf_Internal_Rela *)); |
| 37 | static boolean sh_elf_set_private_flags |
| 38 | PARAMS ((bfd *, flagword)); |
| 39 | static boolean sh_elf_copy_private_data |
| 40 | PARAMS ((bfd *, bfd *)); |
| 41 | static boolean sh_elf_merge_private_data |
| 42 | PARAMS ((bfd *, bfd *)); |
| 43 | static boolean sh_elf_set_mach_from_flags |
| 44 | PARAMS ((bfd *)); |
| 45 | static boolean sh_elf_relax_section |
| 46 | PARAMS ((bfd *, asection *, struct bfd_link_info *, boolean *)); |
| 47 | static boolean sh_elf_relax_delete_bytes |
| 48 | PARAMS ((bfd *, asection *, bfd_vma, int)); |
| 49 | static boolean sh_elf_align_loads |
| 50 | PARAMS ((bfd *, asection *, Elf_Internal_Rela *, bfd_byte *, boolean *)); |
| 51 | static boolean sh_elf_swap_insns |
| 52 | PARAMS ((bfd *, asection *, PTR, bfd_byte *, bfd_vma)); |
| 53 | static boolean sh_elf_relocate_section |
| 54 | PARAMS ((bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *, |
| 55 | Elf_Internal_Rela *, Elf_Internal_Sym *, asection **)); |
| 56 | static bfd_byte *sh_elf_get_relocated_section_contents |
| 57 | PARAMS ((bfd *, struct bfd_link_info *, struct bfd_link_order *, |
| 58 | bfd_byte *, boolean, asymbol **)); |
| 59 | static boolean sh_elf_check_relocs |
| 60 | PARAMS ((bfd *, struct bfd_link_info *, asection *, |
| 61 | const Elf_Internal_Rela *)); |
| 62 | static struct bfd_hash_entry *sh_elf_link_hash_newfunc |
| 63 | PARAMS ((struct bfd_hash_entry *, struct bfd_hash_table *, const char *)); |
| 64 | static struct bfd_link_hash_table *sh_elf_link_hash_table_create |
| 65 | PARAMS ((bfd *)); |
| 66 | static boolean sh_elf_adjust_dynamic_symbol |
| 67 | PARAMS ((struct bfd_link_info *, struct elf_link_hash_entry *)); |
| 68 | static boolean sh_elf_size_dynamic_sections |
| 69 | PARAMS ((bfd *, struct bfd_link_info *)); |
| 70 | static boolean sh_elf_finish_dynamic_symbol |
| 71 | PARAMS ((bfd *, struct bfd_link_info *, struct elf_link_hash_entry *, |
| 72 | Elf_Internal_Sym *)); |
| 73 | static boolean sh_elf_finish_dynamic_sections |
| 74 | PARAMS ((bfd *, struct bfd_link_info *)); |
| 75 | static bfd_reloc_status_type sh_elf_reloc_loop |
| 76 | PARAMS ((int, bfd *, asection *, bfd_byte *, bfd_vma, asection *, |
| 77 | bfd_vma, bfd_vma)); |
| 78 | static boolean sh_elf_create_dynamic_sections |
| 79 | PARAMS ((bfd *, struct bfd_link_info *)); |
| 80 | static asection * sh_elf_gc_mark_hook |
| 81 | PARAMS ((bfd *, struct bfd_link_info *, Elf_Internal_Rela *, |
| 82 | struct elf_link_hash_entry *, Elf_Internal_Sym *)); |
| 83 | static boolean sh_elf_gc_sweep_hook |
| 84 | PARAMS ((bfd *, struct bfd_link_info *, asection *, |
| 85 | const Elf_Internal_Rela *)); |
| 86 | static enum elf_reloc_type_class sh_elf_reloc_type_class |
| 87 | PARAMS ((int)); |
| 88 | |
| 89 | /* The name of the dynamic interpreter. This is put in the .interp |
| 90 | section. */ |
| 91 | |
| 92 | #define ELF_DYNAMIC_INTERPRETER "/usr/lib/libc.so.1" |
| 93 | |
| 94 | static reloc_howto_type sh_elf_howto_table[] = |
| 95 | { |
| 96 | /* No relocation. */ |
| 97 | HOWTO (R_SH_NONE, /* type */ |
| 98 | 0, /* rightshift */ |
| 99 | 0, /* size (0 = byte, 1 = short, 2 = long) */ |
| 100 | 0, /* bitsize */ |
| 101 | false, /* pc_relative */ |
| 102 | 0, /* bitpos */ |
| 103 | complain_overflow_dont, /* complain_on_overflow */ |
| 104 | sh_elf_ignore_reloc, /* special_function */ |
| 105 | "R_SH_NONE", /* name */ |
| 106 | false, /* partial_inplace */ |
| 107 | 0, /* src_mask */ |
| 108 | 0, /* dst_mask */ |
| 109 | false), /* pcrel_offset */ |
| 110 | |
| 111 | /* 32 bit absolute relocation. Setting partial_inplace to true and |
| 112 | src_mask to a non-zero value is similar to the COFF toolchain. */ |
| 113 | HOWTO (R_SH_DIR32, /* type */ |
| 114 | 0, /* rightshift */ |
| 115 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 116 | 32, /* bitsize */ |
| 117 | false, /* pc_relative */ |
| 118 | 0, /* bitpos */ |
| 119 | complain_overflow_bitfield, /* complain_on_overflow */ |
| 120 | sh_elf_reloc, /* special_function */ |
| 121 | "R_SH_DIR32", /* name */ |
| 122 | true, /* partial_inplace */ |
| 123 | 0xffffffff, /* src_mask */ |
| 124 | 0xffffffff, /* dst_mask */ |
| 125 | false), /* pcrel_offset */ |
| 126 | |
| 127 | /* 32 bit PC relative relocation. */ |
| 128 | HOWTO (R_SH_REL32, /* type */ |
| 129 | 0, /* rightshift */ |
| 130 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 131 | 32, /* bitsize */ |
| 132 | true, /* pc_relative */ |
| 133 | 0, /* bitpos */ |
| 134 | complain_overflow_signed, /* complain_on_overflow */ |
| 135 | sh_elf_ignore_reloc, /* special_function */ |
| 136 | "R_SH_REL32", /* name */ |
| 137 | false, /* partial_inplace */ |
| 138 | 0, /* src_mask */ |
| 139 | 0xffffffff, /* dst_mask */ |
| 140 | true), /* pcrel_offset */ |
| 141 | |
| 142 | /* 8 bit PC relative branch divided by 2. */ |
| 143 | HOWTO (R_SH_DIR8WPN, /* type */ |
| 144 | 1, /* rightshift */ |
| 145 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
| 146 | 8, /* bitsize */ |
| 147 | true, /* pc_relative */ |
| 148 | 0, /* bitpos */ |
| 149 | complain_overflow_signed, /* complain_on_overflow */ |
| 150 | sh_elf_ignore_reloc, /* special_function */ |
| 151 | "R_SH_DIR8WPN", /* name */ |
| 152 | true, /* partial_inplace */ |
| 153 | 0xff, /* src_mask */ |
| 154 | 0xff, /* dst_mask */ |
| 155 | true), /* pcrel_offset */ |
| 156 | |
| 157 | /* 12 bit PC relative branch divided by 2. */ |
| 158 | HOWTO (R_SH_IND12W, /* type */ |
| 159 | 1, /* rightshift */ |
| 160 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
| 161 | 12, /* bitsize */ |
| 162 | true, /* pc_relative */ |
| 163 | 0, /* bitpos */ |
| 164 | complain_overflow_signed, /* complain_on_overflow */ |
| 165 | sh_elf_reloc, /* special_function */ |
| 166 | "R_SH_IND12W", /* name */ |
| 167 | true, /* partial_inplace */ |
| 168 | 0xfff, /* src_mask */ |
| 169 | 0xfff, /* dst_mask */ |
| 170 | true), /* pcrel_offset */ |
| 171 | |
| 172 | /* 8 bit unsigned PC relative divided by 4. */ |
| 173 | HOWTO (R_SH_DIR8WPL, /* type */ |
| 174 | 2, /* rightshift */ |
| 175 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
| 176 | 8, /* bitsize */ |
| 177 | true, /* pc_relative */ |
| 178 | 0, /* bitpos */ |
| 179 | complain_overflow_unsigned, /* complain_on_overflow */ |
| 180 | sh_elf_ignore_reloc, /* special_function */ |
| 181 | "R_SH_DIR8WPL", /* name */ |
| 182 | true, /* partial_inplace */ |
| 183 | 0xff, /* src_mask */ |
| 184 | 0xff, /* dst_mask */ |
| 185 | true), /* pcrel_offset */ |
| 186 | |
| 187 | /* 8 bit unsigned PC relative divided by 2. */ |
| 188 | HOWTO (R_SH_DIR8WPZ, /* type */ |
| 189 | 1, /* rightshift */ |
| 190 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
| 191 | 8, /* bitsize */ |
| 192 | true, /* pc_relative */ |
| 193 | 0, /* bitpos */ |
| 194 | complain_overflow_unsigned, /* complain_on_overflow */ |
| 195 | sh_elf_ignore_reloc, /* special_function */ |
| 196 | "R_SH_DIR8WPZ", /* name */ |
| 197 | true, /* partial_inplace */ |
| 198 | 0xff, /* src_mask */ |
| 199 | 0xff, /* dst_mask */ |
| 200 | true), /* pcrel_offset */ |
| 201 | |
| 202 | /* 8 bit GBR relative. FIXME: This only makes sense if we have some |
| 203 | special symbol for the GBR relative area, and that is not |
| 204 | implemented. */ |
| 205 | HOWTO (R_SH_DIR8BP, /* type */ |
| 206 | 0, /* rightshift */ |
| 207 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
| 208 | 8, /* bitsize */ |
| 209 | false, /* pc_relative */ |
| 210 | 0, /* bitpos */ |
| 211 | complain_overflow_unsigned, /* complain_on_overflow */ |
| 212 | sh_elf_ignore_reloc, /* special_function */ |
| 213 | "R_SH_DIR8BP", /* name */ |
| 214 | false, /* partial_inplace */ |
| 215 | 0, /* src_mask */ |
| 216 | 0xff, /* dst_mask */ |
| 217 | true), /* pcrel_offset */ |
| 218 | |
| 219 | /* 8 bit GBR relative divided by 2. FIXME: This only makes sense if |
| 220 | we have some special symbol for the GBR relative area, and that |
| 221 | is not implemented. */ |
| 222 | HOWTO (R_SH_DIR8W, /* type */ |
| 223 | 1, /* rightshift */ |
| 224 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
| 225 | 8, /* bitsize */ |
| 226 | false, /* pc_relative */ |
| 227 | 0, /* bitpos */ |
| 228 | complain_overflow_unsigned, /* complain_on_overflow */ |
| 229 | sh_elf_ignore_reloc, /* special_function */ |
| 230 | "R_SH_DIR8W", /* name */ |
| 231 | false, /* partial_inplace */ |
| 232 | 0, /* src_mask */ |
| 233 | 0xff, /* dst_mask */ |
| 234 | true), /* pcrel_offset */ |
| 235 | |
| 236 | /* 8 bit GBR relative divided by 4. FIXME: This only makes sense if |
| 237 | we have some special symbol for the GBR relative area, and that |
| 238 | is not implemented. */ |
| 239 | HOWTO (R_SH_DIR8L, /* type */ |
| 240 | 2, /* rightshift */ |
| 241 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
| 242 | 8, /* bitsize */ |
| 243 | false, /* pc_relative */ |
| 244 | 0, /* bitpos */ |
| 245 | complain_overflow_unsigned, /* complain_on_overflow */ |
| 246 | sh_elf_ignore_reloc, /* special_function */ |
| 247 | "R_SH_DIR8L", /* name */ |
| 248 | false, /* partial_inplace */ |
| 249 | 0, /* src_mask */ |
| 250 | 0xff, /* dst_mask */ |
| 251 | true), /* pcrel_offset */ |
| 252 | |
| 253 | EMPTY_HOWTO (10), |
| 254 | EMPTY_HOWTO (11), |
| 255 | EMPTY_HOWTO (12), |
| 256 | EMPTY_HOWTO (13), |
| 257 | EMPTY_HOWTO (14), |
| 258 | EMPTY_HOWTO (15), |
| 259 | EMPTY_HOWTO (16), |
| 260 | EMPTY_HOWTO (17), |
| 261 | EMPTY_HOWTO (18), |
| 262 | EMPTY_HOWTO (19), |
| 263 | EMPTY_HOWTO (20), |
| 264 | EMPTY_HOWTO (21), |
| 265 | EMPTY_HOWTO (22), |
| 266 | EMPTY_HOWTO (23), |
| 267 | EMPTY_HOWTO (24), |
| 268 | |
| 269 | /* The remaining relocs are a GNU extension used for relaxing. The |
| 270 | final pass of the linker never needs to do anything with any of |
| 271 | these relocs. Any required operations are handled by the |
| 272 | relaxation code. */ |
| 273 | |
| 274 | /* A 16 bit switch table entry. This is generated for an expression |
| 275 | such as ``.word L1 - L2''. The offset holds the difference |
| 276 | between the reloc address and L2. */ |
| 277 | HOWTO (R_SH_SWITCH16, /* type */ |
| 278 | 0, /* rightshift */ |
| 279 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
| 280 | 16, /* bitsize */ |
| 281 | false, /* pc_relative */ |
| 282 | 0, /* bitpos */ |
| 283 | complain_overflow_unsigned, /* complain_on_overflow */ |
| 284 | sh_elf_ignore_reloc, /* special_function */ |
| 285 | "R_SH_SWITCH16", /* name */ |
| 286 | false, /* partial_inplace */ |
| 287 | 0, /* src_mask */ |
| 288 | 0, /* dst_mask */ |
| 289 | true), /* pcrel_offset */ |
| 290 | |
| 291 | /* A 32 bit switch table entry. This is generated for an expression |
| 292 | such as ``.long L1 - L2''. The offset holds the difference |
| 293 | between the reloc address and L2. */ |
| 294 | HOWTO (R_SH_SWITCH32, /* type */ |
| 295 | 0, /* rightshift */ |
| 296 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 297 | 32, /* bitsize */ |
| 298 | false, /* pc_relative */ |
| 299 | 0, /* bitpos */ |
| 300 | complain_overflow_unsigned, /* complain_on_overflow */ |
| 301 | sh_elf_ignore_reloc, /* special_function */ |
| 302 | "R_SH_SWITCH32", /* name */ |
| 303 | false, /* partial_inplace */ |
| 304 | 0, /* src_mask */ |
| 305 | 0, /* dst_mask */ |
| 306 | true), /* pcrel_offset */ |
| 307 | |
| 308 | /* Indicates a .uses pseudo-op. The compiler will generate .uses |
| 309 | pseudo-ops when it finds a function call which can be relaxed. |
| 310 | The offset field holds the PC relative offset to the instruction |
| 311 | which loads the register used in the function call. */ |
| 312 | HOWTO (R_SH_USES, /* type */ |
| 313 | 0, /* rightshift */ |
| 314 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
| 315 | 0, /* bitsize */ |
| 316 | false, /* pc_relative */ |
| 317 | 0, /* bitpos */ |
| 318 | complain_overflow_unsigned, /* complain_on_overflow */ |
| 319 | sh_elf_ignore_reloc, /* special_function */ |
| 320 | "R_SH_USES", /* name */ |
| 321 | false, /* partial_inplace */ |
| 322 | 0, /* src_mask */ |
| 323 | 0, /* dst_mask */ |
| 324 | true), /* pcrel_offset */ |
| 325 | |
| 326 | /* The assembler will generate this reloc for addresses referred to |
| 327 | by the register loads associated with USES relocs. The offset |
| 328 | field holds the number of times the address is referenced in the |
| 329 | object file. */ |
| 330 | HOWTO (R_SH_COUNT, /* type */ |
| 331 | 0, /* rightshift */ |
| 332 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
| 333 | 0, /* bitsize */ |
| 334 | false, /* pc_relative */ |
| 335 | 0, /* bitpos */ |
| 336 | complain_overflow_unsigned, /* complain_on_overflow */ |
| 337 | sh_elf_ignore_reloc, /* special_function */ |
| 338 | "R_SH_COUNT", /* name */ |
| 339 | false, /* partial_inplace */ |
| 340 | 0, /* src_mask */ |
| 341 | 0, /* dst_mask */ |
| 342 | true), /* pcrel_offset */ |
| 343 | |
| 344 | /* Indicates an alignment statement. The offset field is the power |
| 345 | of 2 to which subsequent portions of the object file must be |
| 346 | aligned. */ |
| 347 | HOWTO (R_SH_ALIGN, /* type */ |
| 348 | 0, /* rightshift */ |
| 349 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
| 350 | 0, /* bitsize */ |
| 351 | false, /* pc_relative */ |
| 352 | 0, /* bitpos */ |
| 353 | complain_overflow_unsigned, /* complain_on_overflow */ |
| 354 | sh_elf_ignore_reloc, /* special_function */ |
| 355 | "R_SH_ALIGN", /* name */ |
| 356 | false, /* partial_inplace */ |
| 357 | 0, /* src_mask */ |
| 358 | 0, /* dst_mask */ |
| 359 | true), /* pcrel_offset */ |
| 360 | |
| 361 | /* The assembler will generate this reloc before a block of |
| 362 | instructions. A section should be processed as assumining it |
| 363 | contains data, unless this reloc is seen. */ |
| 364 | HOWTO (R_SH_CODE, /* type */ |
| 365 | 0, /* rightshift */ |
| 366 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
| 367 | 0, /* bitsize */ |
| 368 | false, /* pc_relative */ |
| 369 | 0, /* bitpos */ |
| 370 | complain_overflow_unsigned, /* complain_on_overflow */ |
| 371 | sh_elf_ignore_reloc, /* special_function */ |
| 372 | "R_SH_CODE", /* name */ |
| 373 | false, /* partial_inplace */ |
| 374 | 0, /* src_mask */ |
| 375 | 0, /* dst_mask */ |
| 376 | true), /* pcrel_offset */ |
| 377 | |
| 378 | /* The assembler will generate this reloc after a block of |
| 379 | instructions when it sees data that is not instructions. */ |
| 380 | HOWTO (R_SH_DATA, /* type */ |
| 381 | 0, /* rightshift */ |
| 382 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
| 383 | 0, /* bitsize */ |
| 384 | false, /* pc_relative */ |
| 385 | 0, /* bitpos */ |
| 386 | complain_overflow_unsigned, /* complain_on_overflow */ |
| 387 | sh_elf_ignore_reloc, /* special_function */ |
| 388 | "R_SH_DATA", /* name */ |
| 389 | false, /* partial_inplace */ |
| 390 | 0, /* src_mask */ |
| 391 | 0, /* dst_mask */ |
| 392 | true), /* pcrel_offset */ |
| 393 | |
| 394 | /* The assembler generates this reloc for each label within a block |
| 395 | of instructions. This permits the linker to avoid swapping |
| 396 | instructions which are the targets of branches. */ |
| 397 | HOWTO (R_SH_LABEL, /* type */ |
| 398 | 0, /* rightshift */ |
| 399 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
| 400 | 0, /* bitsize */ |
| 401 | false, /* pc_relative */ |
| 402 | 0, /* bitpos */ |
| 403 | complain_overflow_unsigned, /* complain_on_overflow */ |
| 404 | sh_elf_ignore_reloc, /* special_function */ |
| 405 | "R_SH_LABEL", /* name */ |
| 406 | false, /* partial_inplace */ |
| 407 | 0, /* src_mask */ |
| 408 | 0, /* dst_mask */ |
| 409 | true), /* pcrel_offset */ |
| 410 | |
| 411 | /* An 8 bit switch table entry. This is generated for an expression |
| 412 | such as ``.word L1 - L2''. The offset holds the difference |
| 413 | between the reloc address and L2. */ |
| 414 | HOWTO (R_SH_SWITCH8, /* type */ |
| 415 | 0, /* rightshift */ |
| 416 | 0, /* size (0 = byte, 1 = short, 2 = long) */ |
| 417 | 8, /* bitsize */ |
| 418 | false, /* pc_relative */ |
| 419 | 0, /* bitpos */ |
| 420 | complain_overflow_unsigned, /* complain_on_overflow */ |
| 421 | sh_elf_ignore_reloc, /* special_function */ |
| 422 | "R_SH_SWITCH8", /* name */ |
| 423 | false, /* partial_inplace */ |
| 424 | 0, /* src_mask */ |
| 425 | 0, /* dst_mask */ |
| 426 | true), /* pcrel_offset */ |
| 427 | |
| 428 | /* GNU extension to record C++ vtable hierarchy */ |
| 429 | HOWTO (R_SH_GNU_VTINHERIT, /* type */ |
| 430 | 0, /* rightshift */ |
| 431 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 432 | 0, /* bitsize */ |
| 433 | false, /* pc_relative */ |
| 434 | 0, /* bitpos */ |
| 435 | complain_overflow_dont, /* complain_on_overflow */ |
| 436 | NULL, /* special_function */ |
| 437 | "R_SH_GNU_VTINHERIT", /* name */ |
| 438 | false, /* partial_inplace */ |
| 439 | 0, /* src_mask */ |
| 440 | 0, /* dst_mask */ |
| 441 | false), /* pcrel_offset */ |
| 442 | |
| 443 | /* GNU extension to record C++ vtable member usage */ |
| 444 | HOWTO (R_SH_GNU_VTENTRY, /* type */ |
| 445 | 0, /* rightshift */ |
| 446 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 447 | 0, /* bitsize */ |
| 448 | false, /* pc_relative */ |
| 449 | 0, /* bitpos */ |
| 450 | complain_overflow_dont, /* complain_on_overflow */ |
| 451 | _bfd_elf_rel_vtable_reloc_fn, /* special_function */ |
| 452 | "R_SH_GNU_VTENTRY", /* name */ |
| 453 | false, /* partial_inplace */ |
| 454 | 0, /* src_mask */ |
| 455 | 0, /* dst_mask */ |
| 456 | false), /* pcrel_offset */ |
| 457 | |
| 458 | /* 8 bit PC relative divided by 2 - but specified in a very odd way. */ |
| 459 | HOWTO (R_SH_LOOP_START, /* type */ |
| 460 | 1, /* rightshift */ |
| 461 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
| 462 | 8, /* bitsize */ |
| 463 | false, /* pc_relative */ |
| 464 | 0, /* bitpos */ |
| 465 | complain_overflow_signed, /* complain_on_overflow */ |
| 466 | sh_elf_ignore_reloc, /* special_function */ |
| 467 | "R_SH_LOOP_START", /* name */ |
| 468 | true, /* partial_inplace */ |
| 469 | 0xff, /* src_mask */ |
| 470 | 0xff, /* dst_mask */ |
| 471 | true), /* pcrel_offset */ |
| 472 | |
| 473 | /* 8 bit PC relative divided by 2 - but specified in a very odd way. */ |
| 474 | HOWTO (R_SH_LOOP_END, /* type */ |
| 475 | 1, /* rightshift */ |
| 476 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
| 477 | 8, /* bitsize */ |
| 478 | false, /* pc_relative */ |
| 479 | 0, /* bitpos */ |
| 480 | complain_overflow_signed, /* complain_on_overflow */ |
| 481 | sh_elf_ignore_reloc, /* special_function */ |
| 482 | "R_SH_LOOP_END", /* name */ |
| 483 | true, /* partial_inplace */ |
| 484 | 0xff, /* src_mask */ |
| 485 | 0xff, /* dst_mask */ |
| 486 | true), /* pcrel_offset */ |
| 487 | |
| 488 | EMPTY_HOWTO (38), |
| 489 | EMPTY_HOWTO (39), |
| 490 | EMPTY_HOWTO (40), |
| 491 | EMPTY_HOWTO (41), |
| 492 | EMPTY_HOWTO (42), |
| 493 | EMPTY_HOWTO (43), |
| 494 | EMPTY_HOWTO (44), |
| 495 | EMPTY_HOWTO (45), |
| 496 | EMPTY_HOWTO (46), |
| 497 | EMPTY_HOWTO (47), |
| 498 | EMPTY_HOWTO (48), |
| 499 | EMPTY_HOWTO (49), |
| 500 | EMPTY_HOWTO (50), |
| 501 | EMPTY_HOWTO (51), |
| 502 | EMPTY_HOWTO (52), |
| 503 | EMPTY_HOWTO (53), |
| 504 | EMPTY_HOWTO (54), |
| 505 | EMPTY_HOWTO (55), |
| 506 | EMPTY_HOWTO (56), |
| 507 | EMPTY_HOWTO (57), |
| 508 | EMPTY_HOWTO (58), |
| 509 | EMPTY_HOWTO (59), |
| 510 | EMPTY_HOWTO (60), |
| 511 | EMPTY_HOWTO (61), |
| 512 | EMPTY_HOWTO (62), |
| 513 | EMPTY_HOWTO (63), |
| 514 | EMPTY_HOWTO (64), |
| 515 | EMPTY_HOWTO (65), |
| 516 | EMPTY_HOWTO (66), |
| 517 | EMPTY_HOWTO (67), |
| 518 | EMPTY_HOWTO (68), |
| 519 | EMPTY_HOWTO (69), |
| 520 | EMPTY_HOWTO (70), |
| 521 | EMPTY_HOWTO (71), |
| 522 | EMPTY_HOWTO (72), |
| 523 | EMPTY_HOWTO (73), |
| 524 | EMPTY_HOWTO (74), |
| 525 | EMPTY_HOWTO (75), |
| 526 | EMPTY_HOWTO (76), |
| 527 | EMPTY_HOWTO (77), |
| 528 | EMPTY_HOWTO (78), |
| 529 | EMPTY_HOWTO (79), |
| 530 | EMPTY_HOWTO (80), |
| 531 | EMPTY_HOWTO (81), |
| 532 | EMPTY_HOWTO (82), |
| 533 | EMPTY_HOWTO (83), |
| 534 | EMPTY_HOWTO (84), |
| 535 | EMPTY_HOWTO (85), |
| 536 | EMPTY_HOWTO (86), |
| 537 | EMPTY_HOWTO (87), |
| 538 | EMPTY_HOWTO (88), |
| 539 | EMPTY_HOWTO (89), |
| 540 | EMPTY_HOWTO (90), |
| 541 | EMPTY_HOWTO (91), |
| 542 | EMPTY_HOWTO (92), |
| 543 | EMPTY_HOWTO (93), |
| 544 | EMPTY_HOWTO (94), |
| 545 | EMPTY_HOWTO (95), |
| 546 | EMPTY_HOWTO (96), |
| 547 | EMPTY_HOWTO (97), |
| 548 | EMPTY_HOWTO (98), |
| 549 | EMPTY_HOWTO (99), |
| 550 | EMPTY_HOWTO (100), |
| 551 | EMPTY_HOWTO (101), |
| 552 | EMPTY_HOWTO (102), |
| 553 | EMPTY_HOWTO (103), |
| 554 | EMPTY_HOWTO (104), |
| 555 | EMPTY_HOWTO (105), |
| 556 | EMPTY_HOWTO (106), |
| 557 | EMPTY_HOWTO (107), |
| 558 | EMPTY_HOWTO (108), |
| 559 | EMPTY_HOWTO (109), |
| 560 | EMPTY_HOWTO (110), |
| 561 | EMPTY_HOWTO (111), |
| 562 | EMPTY_HOWTO (112), |
| 563 | EMPTY_HOWTO (113), |
| 564 | EMPTY_HOWTO (114), |
| 565 | EMPTY_HOWTO (115), |
| 566 | EMPTY_HOWTO (116), |
| 567 | EMPTY_HOWTO (117), |
| 568 | EMPTY_HOWTO (118), |
| 569 | EMPTY_HOWTO (119), |
| 570 | EMPTY_HOWTO (120), |
| 571 | EMPTY_HOWTO (121), |
| 572 | EMPTY_HOWTO (122), |
| 573 | EMPTY_HOWTO (123), |
| 574 | EMPTY_HOWTO (124), |
| 575 | EMPTY_HOWTO (125), |
| 576 | EMPTY_HOWTO (126), |
| 577 | EMPTY_HOWTO (127), |
| 578 | EMPTY_HOWTO (128), |
| 579 | EMPTY_HOWTO (129), |
| 580 | EMPTY_HOWTO (130), |
| 581 | EMPTY_HOWTO (131), |
| 582 | EMPTY_HOWTO (132), |
| 583 | EMPTY_HOWTO (133), |
| 584 | EMPTY_HOWTO (134), |
| 585 | EMPTY_HOWTO (135), |
| 586 | EMPTY_HOWTO (136), |
| 587 | EMPTY_HOWTO (137), |
| 588 | EMPTY_HOWTO (138), |
| 589 | EMPTY_HOWTO (139), |
| 590 | EMPTY_HOWTO (140), |
| 591 | EMPTY_HOWTO (141), |
| 592 | EMPTY_HOWTO (142), |
| 593 | EMPTY_HOWTO (143), |
| 594 | EMPTY_HOWTO (144), |
| 595 | EMPTY_HOWTO (145), |
| 596 | EMPTY_HOWTO (146), |
| 597 | EMPTY_HOWTO (147), |
| 598 | EMPTY_HOWTO (148), |
| 599 | EMPTY_HOWTO (149), |
| 600 | EMPTY_HOWTO (150), |
| 601 | EMPTY_HOWTO (151), |
| 602 | EMPTY_HOWTO (152), |
| 603 | EMPTY_HOWTO (153), |
| 604 | EMPTY_HOWTO (154), |
| 605 | EMPTY_HOWTO (155), |
| 606 | EMPTY_HOWTO (156), |
| 607 | EMPTY_HOWTO (157), |
| 608 | EMPTY_HOWTO (158), |
| 609 | EMPTY_HOWTO (159), |
| 610 | |
| 611 | HOWTO (R_SH_GOT32, /* type */ |
| 612 | 0, /* rightshift */ |
| 613 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 614 | 32, /* bitsize */ |
| 615 | false, /* pc_relative */ |
| 616 | 0, /* bitpos */ |
| 617 | complain_overflow_bitfield, /* complain_on_overflow */ |
| 618 | bfd_elf_generic_reloc, /* */ |
| 619 | "R_SH_GOT32", /* name */ |
| 620 | true, /* partial_inplace */ |
| 621 | 0xffffffff, /* src_mask */ |
| 622 | 0xffffffff, /* dst_mask */ |
| 623 | false), /* pcrel_offset */ |
| 624 | |
| 625 | HOWTO (R_SH_PLT32, /* type */ |
| 626 | 0, /* rightshift */ |
| 627 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 628 | 32, /* bitsize */ |
| 629 | true, /* pc_relative */ |
| 630 | 0, /* bitpos */ |
| 631 | complain_overflow_bitfield, /* complain_on_overflow */ |
| 632 | bfd_elf_generic_reloc, /* */ |
| 633 | "R_SH_PLT32", /* name */ |
| 634 | true, /* partial_inplace */ |
| 635 | 0xffffffff, /* src_mask */ |
| 636 | 0xffffffff, /* dst_mask */ |
| 637 | true), /* pcrel_offset */ |
| 638 | |
| 639 | HOWTO (R_SH_COPY, /* type */ |
| 640 | 0, /* rightshift */ |
| 641 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 642 | 32, /* bitsize */ |
| 643 | false, /* pc_relative */ |
| 644 | 0, /* bitpos */ |
| 645 | complain_overflow_bitfield, /* complain_on_overflow */ |
| 646 | bfd_elf_generic_reloc, /* */ |
| 647 | "R_SH_COPY", /* name */ |
| 648 | true, /* partial_inplace */ |
| 649 | 0xffffffff, /* src_mask */ |
| 650 | 0xffffffff, /* dst_mask */ |
| 651 | false), /* pcrel_offset */ |
| 652 | |
| 653 | HOWTO (R_SH_GLOB_DAT, /* type */ |
| 654 | 0, /* rightshift */ |
| 655 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 656 | 32, /* bitsize */ |
| 657 | false, /* pc_relative */ |
| 658 | 0, /* bitpos */ |
| 659 | complain_overflow_bitfield, /* complain_on_overflow */ |
| 660 | bfd_elf_generic_reloc, /* */ |
| 661 | "R_SH_GLOB_DAT", /* name */ |
| 662 | true, /* partial_inplace */ |
| 663 | 0xffffffff, /* src_mask */ |
| 664 | 0xffffffff, /* dst_mask */ |
| 665 | false), /* pcrel_offset */ |
| 666 | |
| 667 | HOWTO (R_SH_JMP_SLOT, /* type */ |
| 668 | 0, /* rightshift */ |
| 669 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 670 | 32, /* bitsize */ |
| 671 | false, /* pc_relative */ |
| 672 | 0, /* bitpos */ |
| 673 | complain_overflow_bitfield, /* complain_on_overflow */ |
| 674 | bfd_elf_generic_reloc, /* */ |
| 675 | "R_SH_JMP_SLOT", /* name */ |
| 676 | true, /* partial_inplace */ |
| 677 | 0xffffffff, /* src_mask */ |
| 678 | 0xffffffff, /* dst_mask */ |
| 679 | false), /* pcrel_offset */ |
| 680 | |
| 681 | HOWTO (R_SH_RELATIVE, /* type */ |
| 682 | 0, /* rightshift */ |
| 683 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 684 | 32, /* bitsize */ |
| 685 | false, /* pc_relative */ |
| 686 | 0, /* bitpos */ |
| 687 | complain_overflow_bitfield, /* complain_on_overflow */ |
| 688 | bfd_elf_generic_reloc, /* */ |
| 689 | "R_SH_RELATIVE", /* name */ |
| 690 | true, /* partial_inplace */ |
| 691 | 0xffffffff, /* src_mask */ |
| 692 | 0xffffffff, /* dst_mask */ |
| 693 | false), /* pcrel_offset */ |
| 694 | |
| 695 | HOWTO (R_SH_GOTOFF, /* type */ |
| 696 | 0, /* rightshift */ |
| 697 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 698 | 32, /* bitsize */ |
| 699 | false, /* pc_relative */ |
| 700 | 0, /* bitpos */ |
| 701 | complain_overflow_bitfield, /* complain_on_overflow */ |
| 702 | bfd_elf_generic_reloc, /* */ |
| 703 | "R_SH_GOTOFF", /* name */ |
| 704 | true, /* partial_inplace */ |
| 705 | 0xffffffff, /* src_mask */ |
| 706 | 0xffffffff, /* dst_mask */ |
| 707 | false), /* pcrel_offset */ |
| 708 | |
| 709 | HOWTO (R_SH_GOTPC, /* type */ |
| 710 | 0, /* rightshift */ |
| 711 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 712 | 32, /* bitsize */ |
| 713 | true, /* pc_relative */ |
| 714 | 0, /* bitpos */ |
| 715 | complain_overflow_bitfield, /* complain_on_overflow */ |
| 716 | bfd_elf_generic_reloc, /* */ |
| 717 | "R_SH_GOTPC", /* name */ |
| 718 | true, /* partial_inplace */ |
| 719 | 0xffffffff, /* src_mask */ |
| 720 | 0xffffffff, /* dst_mask */ |
| 721 | true), /* pcrel_offset */ |
| 722 | |
| 723 | }; |
| 724 | |
| 725 | static bfd_reloc_status_type |
| 726 | sh_elf_reloc_loop (r_type, input_bfd, input_section, contents, addr, |
| 727 | symbol_section, start, end) |
| 728 | int r_type ATTRIBUTE_UNUSED; |
| 729 | bfd *input_bfd; |
| 730 | asection *input_section; |
| 731 | bfd_byte *contents; |
| 732 | bfd_vma addr; |
| 733 | asection *symbol_section; |
| 734 | bfd_vma start, end; |
| 735 | { |
| 736 | static bfd_vma last_addr; |
| 737 | static asection *last_symbol_section; |
| 738 | bfd_byte *free_contents = NULL; |
| 739 | bfd_byte *start_ptr, *ptr, *last_ptr; |
| 740 | int diff, cum_diff; |
| 741 | bfd_signed_vma x; |
| 742 | int insn; |
| 743 | |
| 744 | /* Sanity check the address. */ |
| 745 | if (addr > input_section->_raw_size) |
| 746 | return bfd_reloc_outofrange; |
| 747 | |
| 748 | /* We require the start and end relocations to be processed consecutively - |
| 749 | although we allow then to be processed forwards or backwards. */ |
| 750 | if (! last_addr) |
| 751 | { |
| 752 | last_addr = addr; |
| 753 | last_symbol_section = symbol_section; |
| 754 | return bfd_reloc_ok; |
| 755 | } |
| 756 | if (last_addr != addr) |
| 757 | abort (); |
| 758 | last_addr = 0; |
| 759 | |
| 760 | if (! symbol_section || last_symbol_section != symbol_section || end < start) |
| 761 | return bfd_reloc_outofrange; |
| 762 | |
| 763 | /* Get the symbol_section contents. */ |
| 764 | if (symbol_section != input_section) |
| 765 | { |
| 766 | if (elf_section_data (symbol_section)->this_hdr.contents != NULL) |
| 767 | contents = elf_section_data (symbol_section)->this_hdr.contents; |
| 768 | else |
| 769 | { |
| 770 | contents = (bfd_byte *) bfd_malloc (symbol_section->_raw_size); |
| 771 | if (contents == NULL) |
| 772 | return bfd_reloc_outofrange; |
| 773 | free_contents = contents; |
| 774 | if (! bfd_get_section_contents (input_bfd, symbol_section, contents, |
| 775 | (file_ptr) 0, |
| 776 | symbol_section->_raw_size)) |
| 777 | { |
| 778 | free (contents); |
| 779 | return bfd_reloc_outofrange; |
| 780 | } |
| 781 | } |
| 782 | } |
| 783 | #define IS_PPI(PTR) ((bfd_get_16 (input_bfd, (PTR)) & 0xfc00) == 0xf800) |
| 784 | start_ptr = contents + start; |
| 785 | for (cum_diff = -6, ptr = contents + end; cum_diff < 0 && ptr > start_ptr;) |
| 786 | { |
| 787 | for (last_ptr = ptr, ptr -= 4; ptr >= start_ptr && IS_PPI (ptr);) |
| 788 | ptr -= 2; |
| 789 | ptr += 2; |
| 790 | diff = (last_ptr - ptr) >> 1; |
| 791 | cum_diff += diff & 1; |
| 792 | cum_diff += diff; |
| 793 | } |
| 794 | /* Calculate the start / end values to load into rs / re minus four - |
| 795 | so that will cancel out the four we would otherwise have to add to |
| 796 | addr to get the value to subtract in order to get relative addressing. */ |
| 797 | if (cum_diff >= 0) |
| 798 | { |
| 799 | start -= 4; |
| 800 | end = (ptr + cum_diff * 2) - contents; |
| 801 | } |
| 802 | else |
| 803 | { |
| 804 | bfd_vma start0 = start - 4; |
| 805 | |
| 806 | while (start0 && IS_PPI (contents + start0)) |
| 807 | start0 -= 2; |
| 808 | start0 = start - 2 - ((start - start0) & 2); |
| 809 | start = start0 - cum_diff - 2; |
| 810 | end = start0; |
| 811 | } |
| 812 | |
| 813 | if (free_contents) |
| 814 | free (free_contents); |
| 815 | |
| 816 | insn = bfd_get_16 (input_bfd, contents + addr); |
| 817 | |
| 818 | x = (insn & 0x200 ? end : start) - addr; |
| 819 | if (input_section != symbol_section) |
| 820 | x += ((symbol_section->output_section->vma + symbol_section->output_offset) |
| 821 | - (input_section->output_section->vma |
| 822 | + input_section->output_offset)); |
| 823 | x >>= 1; |
| 824 | if (x < -128 || x > 127) |
| 825 | return bfd_reloc_overflow; |
| 826 | |
| 827 | x = (insn & ~0xff) | (x & 0xff); |
| 828 | bfd_put_16 (input_bfd, (bfd_vma) x, contents + addr); |
| 829 | |
| 830 | return bfd_reloc_ok; |
| 831 | } |
| 832 | |
| 833 | /* This function is used for normal relocs. This used to be like the COFF |
| 834 | function, and is almost certainly incorrect for other ELF targets. */ |
| 835 | |
| 836 | static bfd_reloc_status_type |
| 837 | sh_elf_reloc (abfd, reloc_entry, symbol_in, data, input_section, output_bfd, |
| 838 | error_message) |
| 839 | bfd *abfd; |
| 840 | arelent *reloc_entry; |
| 841 | asymbol *symbol_in; |
| 842 | PTR data; |
| 843 | asection *input_section; |
| 844 | bfd *output_bfd; |
| 845 | char **error_message ATTRIBUTE_UNUSED; |
| 846 | { |
| 847 | unsigned long insn; |
| 848 | bfd_vma sym_value; |
| 849 | enum elf_sh_reloc_type r_type; |
| 850 | bfd_vma addr = reloc_entry->address; |
| 851 | bfd_byte *hit_data = addr + (bfd_byte *) data; |
| 852 | |
| 853 | r_type = (enum elf_sh_reloc_type) reloc_entry->howto->type; |
| 854 | |
| 855 | if (output_bfd != NULL) |
| 856 | { |
| 857 | /* Partial linking--do nothing. */ |
| 858 | reloc_entry->address += input_section->output_offset; |
| 859 | return bfd_reloc_ok; |
| 860 | } |
| 861 | |
| 862 | /* Almost all relocs have to do with relaxing. If any work must be |
| 863 | done for them, it has been done in sh_relax_section. */ |
| 864 | if (r_type == R_SH_IND12W && (symbol_in->flags & BSF_LOCAL) != 0) |
| 865 | return bfd_reloc_ok; |
| 866 | |
| 867 | if (symbol_in != NULL |
| 868 | && bfd_is_und_section (symbol_in->section)) |
| 869 | return bfd_reloc_undefined; |
| 870 | |
| 871 | if (bfd_is_com_section (symbol_in->section)) |
| 872 | sym_value = 0; |
| 873 | else |
| 874 | sym_value = (symbol_in->value + |
| 875 | symbol_in->section->output_section->vma + |
| 876 | symbol_in->section->output_offset); |
| 877 | |
| 878 | switch (r_type) |
| 879 | { |
| 880 | case R_SH_DIR32: |
| 881 | insn = bfd_get_32 (abfd, hit_data); |
| 882 | insn += sym_value + reloc_entry->addend; |
| 883 | bfd_put_32 (abfd, (bfd_vma) insn, hit_data); |
| 884 | break; |
| 885 | case R_SH_IND12W: |
| 886 | insn = bfd_get_16 (abfd, hit_data); |
| 887 | sym_value += reloc_entry->addend; |
| 888 | sym_value -= (input_section->output_section->vma |
| 889 | + input_section->output_offset |
| 890 | + addr |
| 891 | + 4); |
| 892 | sym_value += (insn & 0xfff) << 1; |
| 893 | if (insn & 0x800) |
| 894 | sym_value -= 0x1000; |
| 895 | insn = (insn & 0xf000) | (sym_value & 0xfff); |
| 896 | bfd_put_16 (abfd, (bfd_vma) insn, hit_data); |
| 897 | if (sym_value < (bfd_vma) -0x1000 || sym_value >= 0x1000) |
| 898 | return bfd_reloc_overflow; |
| 899 | break; |
| 900 | default: |
| 901 | abort (); |
| 902 | break; |
| 903 | } |
| 904 | |
| 905 | return bfd_reloc_ok; |
| 906 | } |
| 907 | |
| 908 | /* This function is used for relocs which are only used for relaxing, |
| 909 | which the linker should otherwise ignore. */ |
| 910 | |
| 911 | static bfd_reloc_status_type |
| 912 | sh_elf_ignore_reloc (abfd, reloc_entry, symbol, data, input_section, |
| 913 | output_bfd, error_message) |
| 914 | bfd *abfd ATTRIBUTE_UNUSED; |
| 915 | arelent *reloc_entry; |
| 916 | asymbol *symbol ATTRIBUTE_UNUSED; |
| 917 | PTR data ATTRIBUTE_UNUSED; |
| 918 | asection *input_section; |
| 919 | bfd *output_bfd; |
| 920 | char **error_message ATTRIBUTE_UNUSED; |
| 921 | { |
| 922 | if (output_bfd != NULL) |
| 923 | reloc_entry->address += input_section->output_offset; |
| 924 | return bfd_reloc_ok; |
| 925 | } |
| 926 | |
| 927 | /* This structure is used to map BFD reloc codes to SH ELF relocs. */ |
| 928 | |
| 929 | struct elf_reloc_map |
| 930 | { |
| 931 | bfd_reloc_code_real_type bfd_reloc_val; |
| 932 | unsigned char elf_reloc_val; |
| 933 | }; |
| 934 | |
| 935 | /* An array mapping BFD reloc codes to SH ELF relocs. */ |
| 936 | |
| 937 | static const struct elf_reloc_map sh_reloc_map[] = |
| 938 | { |
| 939 | { BFD_RELOC_NONE, R_SH_NONE }, |
| 940 | { BFD_RELOC_32, R_SH_DIR32 }, |
| 941 | { BFD_RELOC_CTOR, R_SH_DIR32 }, |
| 942 | { BFD_RELOC_32_PCREL, R_SH_REL32 }, |
| 943 | { BFD_RELOC_SH_PCDISP8BY2, R_SH_DIR8WPN }, |
| 944 | { BFD_RELOC_SH_PCDISP12BY2, R_SH_IND12W }, |
| 945 | { BFD_RELOC_SH_PCRELIMM8BY2, R_SH_DIR8WPZ }, |
| 946 | { BFD_RELOC_SH_PCRELIMM8BY4, R_SH_DIR8WPL }, |
| 947 | { BFD_RELOC_8_PCREL, R_SH_SWITCH8 }, |
| 948 | { BFD_RELOC_SH_SWITCH16, R_SH_SWITCH16 }, |
| 949 | { BFD_RELOC_SH_SWITCH32, R_SH_SWITCH32 }, |
| 950 | { BFD_RELOC_SH_USES, R_SH_USES }, |
| 951 | { BFD_RELOC_SH_COUNT, R_SH_COUNT }, |
| 952 | { BFD_RELOC_SH_ALIGN, R_SH_ALIGN }, |
| 953 | { BFD_RELOC_SH_CODE, R_SH_CODE }, |
| 954 | { BFD_RELOC_SH_DATA, R_SH_DATA }, |
| 955 | { BFD_RELOC_SH_LABEL, R_SH_LABEL }, |
| 956 | { BFD_RELOC_VTABLE_INHERIT, R_SH_GNU_VTINHERIT }, |
| 957 | { BFD_RELOC_VTABLE_ENTRY, R_SH_GNU_VTENTRY }, |
| 958 | { BFD_RELOC_SH_LOOP_START, R_SH_LOOP_START }, |
| 959 | { BFD_RELOC_SH_LOOP_END, R_SH_LOOP_END }, |
| 960 | { BFD_RELOC_32_GOT_PCREL, R_SH_GOT32 }, |
| 961 | { BFD_RELOC_32_PLT_PCREL, R_SH_PLT32 }, |
| 962 | { BFD_RELOC_SH_COPY, R_SH_COPY }, |
| 963 | { BFD_RELOC_SH_GLOB_DAT, R_SH_GLOB_DAT }, |
| 964 | { BFD_RELOC_SH_JMP_SLOT, R_SH_JMP_SLOT }, |
| 965 | { BFD_RELOC_SH_RELATIVE, R_SH_RELATIVE }, |
| 966 | { BFD_RELOC_32_GOTOFF, R_SH_GOTOFF }, |
| 967 | { BFD_RELOC_SH_GOTPC, R_SH_GOTPC }, |
| 968 | }; |
| 969 | |
| 970 | /* Given a BFD reloc code, return the howto structure for the |
| 971 | corresponding SH ELf reloc. */ |
| 972 | |
| 973 | static reloc_howto_type * |
| 974 | sh_elf_reloc_type_lookup (abfd, code) |
| 975 | bfd *abfd ATTRIBUTE_UNUSED; |
| 976 | bfd_reloc_code_real_type code; |
| 977 | { |
| 978 | unsigned int i; |
| 979 | |
| 980 | for (i = 0; i < sizeof (sh_reloc_map) / sizeof (struct elf_reloc_map); i++) |
| 981 | { |
| 982 | if (sh_reloc_map[i].bfd_reloc_val == code) |
| 983 | return &sh_elf_howto_table[(int) sh_reloc_map[i].elf_reloc_val]; |
| 984 | } |
| 985 | |
| 986 | return NULL; |
| 987 | } |
| 988 | |
| 989 | /* Given an ELF reloc, fill in the howto field of a relent. */ |
| 990 | |
| 991 | static void |
| 992 | sh_elf_info_to_howto (abfd, cache_ptr, dst) |
| 993 | bfd *abfd ATTRIBUTE_UNUSED; |
| 994 | arelent *cache_ptr; |
| 995 | Elf_Internal_Rela *dst; |
| 996 | { |
| 997 | unsigned int r; |
| 998 | |
| 999 | r = ELF32_R_TYPE (dst->r_info); |
| 1000 | |
| 1001 | BFD_ASSERT (r < (unsigned int) R_SH_max); |
| 1002 | BFD_ASSERT (r < R_SH_FIRST_INVALID_RELOC || r > R_SH_LAST_INVALID_RELOC); |
| 1003 | BFD_ASSERT (r < R_SH_FIRST_INVALID_RELOC_2 || r > R_SH_LAST_INVALID_RELOC_2); |
| 1004 | |
| 1005 | cache_ptr->howto = &sh_elf_howto_table[r]; |
| 1006 | } |
| 1007 | \f |
| 1008 | /* This function handles relaxing for SH ELF. See the corresponding |
| 1009 | function in coff-sh.c for a description of what this does. FIXME: |
| 1010 | There is a lot of duplication here between this code and the COFF |
| 1011 | specific code. The format of relocs and symbols is wound deeply |
| 1012 | into this code, but it would still be better if the duplication |
| 1013 | could be eliminated somehow. Note in particular that although both |
| 1014 | functions use symbols like R_SH_CODE, those symbols have different |
| 1015 | values; in coff-sh.c they come from include/coff/sh.h, whereas here |
| 1016 | they come from enum elf_sh_reloc_type in include/elf/sh.h. */ |
| 1017 | |
| 1018 | static boolean |
| 1019 | sh_elf_relax_section (abfd, sec, link_info, again) |
| 1020 | bfd *abfd; |
| 1021 | asection *sec; |
| 1022 | struct bfd_link_info *link_info; |
| 1023 | boolean *again; |
| 1024 | { |
| 1025 | Elf_Internal_Shdr *symtab_hdr; |
| 1026 | Elf_Internal_Rela *internal_relocs; |
| 1027 | Elf_Internal_Rela *free_relocs = NULL; |
| 1028 | boolean have_code; |
| 1029 | Elf_Internal_Rela *irel, *irelend; |
| 1030 | bfd_byte *contents = NULL; |
| 1031 | bfd_byte *free_contents = NULL; |
| 1032 | Elf32_External_Sym *extsyms = NULL; |
| 1033 | Elf32_External_Sym *free_extsyms = NULL; |
| 1034 | |
| 1035 | *again = false; |
| 1036 | |
| 1037 | if (link_info->relocateable |
| 1038 | || (sec->flags & SEC_RELOC) == 0 |
| 1039 | || sec->reloc_count == 0) |
| 1040 | return true; |
| 1041 | |
| 1042 | /* If this is the first time we have been called for this section, |
| 1043 | initialize the cooked size. */ |
| 1044 | if (sec->_cooked_size == 0) |
| 1045 | sec->_cooked_size = sec->_raw_size; |
| 1046 | |
| 1047 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; |
| 1048 | |
| 1049 | internal_relocs = (_bfd_elf32_link_read_relocs |
| 1050 | (abfd, sec, (PTR) NULL, (Elf_Internal_Rela *) NULL, |
| 1051 | link_info->keep_memory)); |
| 1052 | if (internal_relocs == NULL) |
| 1053 | goto error_return; |
| 1054 | if (! link_info->keep_memory) |
| 1055 | free_relocs = internal_relocs; |
| 1056 | |
| 1057 | have_code = false; |
| 1058 | |
| 1059 | irelend = internal_relocs + sec->reloc_count; |
| 1060 | for (irel = internal_relocs; irel < irelend; irel++) |
| 1061 | { |
| 1062 | bfd_vma laddr, paddr, symval; |
| 1063 | unsigned short insn; |
| 1064 | Elf_Internal_Rela *irelfn, *irelscan, *irelcount; |
| 1065 | bfd_signed_vma foff; |
| 1066 | |
| 1067 | if (ELF32_R_TYPE (irel->r_info) == (int) R_SH_CODE) |
| 1068 | have_code = true; |
| 1069 | |
| 1070 | if (ELF32_R_TYPE (irel->r_info) != (int) R_SH_USES) |
| 1071 | continue; |
| 1072 | |
| 1073 | /* Get the section contents. */ |
| 1074 | if (contents == NULL) |
| 1075 | { |
| 1076 | if (elf_section_data (sec)->this_hdr.contents != NULL) |
| 1077 | contents = elf_section_data (sec)->this_hdr.contents; |
| 1078 | else |
| 1079 | { |
| 1080 | contents = (bfd_byte *) bfd_malloc (sec->_raw_size); |
| 1081 | if (contents == NULL) |
| 1082 | goto error_return; |
| 1083 | free_contents = contents; |
| 1084 | |
| 1085 | if (! bfd_get_section_contents (abfd, sec, contents, |
| 1086 | (file_ptr) 0, sec->_raw_size)) |
| 1087 | goto error_return; |
| 1088 | } |
| 1089 | } |
| 1090 | |
| 1091 | /* The r_addend field of the R_SH_USES reloc will point us to |
| 1092 | the register load. The 4 is because the r_addend field is |
| 1093 | computed as though it were a jump offset, which are based |
| 1094 | from 4 bytes after the jump instruction. */ |
| 1095 | laddr = irel->r_offset + 4 + irel->r_addend; |
| 1096 | if (laddr >= sec->_raw_size) |
| 1097 | { |
| 1098 | (*_bfd_error_handler) (_("%s: 0x%lx: warning: bad R_SH_USES offset"), |
| 1099 | bfd_get_filename (abfd), |
| 1100 | (unsigned long) irel->r_offset); |
| 1101 | continue; |
| 1102 | } |
| 1103 | insn = bfd_get_16 (abfd, contents + laddr); |
| 1104 | |
| 1105 | /* If the instruction is not mov.l NN,rN, we don't know what to |
| 1106 | do. */ |
| 1107 | if ((insn & 0xf000) != 0xd000) |
| 1108 | { |
| 1109 | ((*_bfd_error_handler) |
| 1110 | (_("%s: 0x%lx: warning: R_SH_USES points to unrecognized insn 0x%x"), |
| 1111 | bfd_get_filename (abfd), (unsigned long) irel->r_offset, insn)); |
| 1112 | continue; |
| 1113 | } |
| 1114 | |
| 1115 | /* Get the address from which the register is being loaded. The |
| 1116 | displacement in the mov.l instruction is quadrupled. It is a |
| 1117 | displacement from four bytes after the movl instruction, but, |
| 1118 | before adding in the PC address, two least significant bits |
| 1119 | of the PC are cleared. We assume that the section is aligned |
| 1120 | on a four byte boundary. */ |
| 1121 | paddr = insn & 0xff; |
| 1122 | paddr *= 4; |
| 1123 | paddr += (laddr + 4) &~ (bfd_vma) 3; |
| 1124 | if (paddr >= sec->_raw_size) |
| 1125 | { |
| 1126 | ((*_bfd_error_handler) |
| 1127 | (_("%s: 0x%lx: warning: bad R_SH_USES load offset"), |
| 1128 | bfd_get_filename (abfd), (unsigned long) irel->r_offset)); |
| 1129 | continue; |
| 1130 | } |
| 1131 | |
| 1132 | /* Get the reloc for the address from which the register is |
| 1133 | being loaded. This reloc will tell us which function is |
| 1134 | actually being called. */ |
| 1135 | for (irelfn = internal_relocs; irelfn < irelend; irelfn++) |
| 1136 | if (irelfn->r_offset == paddr |
| 1137 | && ELF32_R_TYPE (irelfn->r_info) == (int) R_SH_DIR32) |
| 1138 | break; |
| 1139 | if (irelfn >= irelend) |
| 1140 | { |
| 1141 | ((*_bfd_error_handler) |
| 1142 | (_("%s: 0x%lx: warning: could not find expected reloc"), |
| 1143 | bfd_get_filename (abfd), (unsigned long) paddr)); |
| 1144 | continue; |
| 1145 | } |
| 1146 | |
| 1147 | /* Read this BFD's symbols if we haven't done so already. */ |
| 1148 | if (extsyms == NULL) |
| 1149 | { |
| 1150 | if (symtab_hdr->contents != NULL) |
| 1151 | extsyms = (Elf32_External_Sym *) symtab_hdr->contents; |
| 1152 | else |
| 1153 | { |
| 1154 | extsyms = (Elf32_External_Sym *) bfd_malloc (symtab_hdr->sh_size); |
| 1155 | if (extsyms == NULL) |
| 1156 | goto error_return; |
| 1157 | free_extsyms = extsyms; |
| 1158 | if (bfd_seek (abfd, symtab_hdr->sh_offset, SEEK_SET) != 0 |
| 1159 | || (bfd_bread (extsyms, symtab_hdr->sh_size, abfd) |
| 1160 | != symtab_hdr->sh_size)) |
| 1161 | goto error_return; |
| 1162 | } |
| 1163 | } |
| 1164 | |
| 1165 | /* Get the value of the symbol referred to by the reloc. */ |
| 1166 | if (ELF32_R_SYM (irelfn->r_info) < symtab_hdr->sh_info) |
| 1167 | { |
| 1168 | Elf_Internal_Sym isym; |
| 1169 | |
| 1170 | /* A local symbol. */ |
| 1171 | bfd_elf32_swap_symbol_in (abfd, |
| 1172 | extsyms + ELF32_R_SYM (irelfn->r_info), |
| 1173 | &isym); |
| 1174 | |
| 1175 | if (isym.st_shndx != _bfd_elf_section_from_bfd_section (abfd, sec)) |
| 1176 | { |
| 1177 | ((*_bfd_error_handler) |
| 1178 | (_("%s: 0x%lx: warning: symbol in unexpected section"), |
| 1179 | bfd_get_filename (abfd), (unsigned long) paddr)); |
| 1180 | continue; |
| 1181 | } |
| 1182 | |
| 1183 | symval = (isym.st_value |
| 1184 | + sec->output_section->vma |
| 1185 | + sec->output_offset); |
| 1186 | } |
| 1187 | else |
| 1188 | { |
| 1189 | unsigned long indx; |
| 1190 | struct elf_link_hash_entry *h; |
| 1191 | |
| 1192 | indx = ELF32_R_SYM (irelfn->r_info) - symtab_hdr->sh_info; |
| 1193 | h = elf_sym_hashes (abfd)[indx]; |
| 1194 | BFD_ASSERT (h != NULL); |
| 1195 | if (h->root.type != bfd_link_hash_defined |
| 1196 | && h->root.type != bfd_link_hash_defweak) |
| 1197 | { |
| 1198 | /* This appears to be a reference to an undefined |
| 1199 | symbol. Just ignore it--it will be caught by the |
| 1200 | regular reloc processing. */ |
| 1201 | continue; |
| 1202 | } |
| 1203 | |
| 1204 | symval = (h->root.u.def.value |
| 1205 | + h->root.u.def.section->output_section->vma |
| 1206 | + h->root.u.def.section->output_offset); |
| 1207 | } |
| 1208 | |
| 1209 | symval += bfd_get_32 (abfd, contents + paddr); |
| 1210 | |
| 1211 | /* See if this function call can be shortened. */ |
| 1212 | foff = (symval |
| 1213 | - (irel->r_offset |
| 1214 | + sec->output_section->vma |
| 1215 | + sec->output_offset |
| 1216 | + 4)); |
| 1217 | if (foff < -0x1000 || foff >= 0x1000) |
| 1218 | { |
| 1219 | /* After all that work, we can't shorten this function call. */ |
| 1220 | continue; |
| 1221 | } |
| 1222 | |
| 1223 | /* Shorten the function call. */ |
| 1224 | |
| 1225 | /* For simplicity of coding, we are going to modify the section |
| 1226 | contents, the section relocs, and the BFD symbol table. We |
| 1227 | must tell the rest of the code not to free up this |
| 1228 | information. It would be possible to instead create a table |
| 1229 | of changes which have to be made, as is done in coff-mips.c; |
| 1230 | that would be more work, but would require less memory when |
| 1231 | the linker is run. */ |
| 1232 | |
| 1233 | elf_section_data (sec)->relocs = internal_relocs; |
| 1234 | free_relocs = NULL; |
| 1235 | |
| 1236 | elf_section_data (sec)->this_hdr.contents = contents; |
| 1237 | free_contents = NULL; |
| 1238 | |
| 1239 | symtab_hdr->contents = (bfd_byte *) extsyms; |
| 1240 | free_extsyms = NULL; |
| 1241 | |
| 1242 | /* Replace the jsr with a bsr. */ |
| 1243 | |
| 1244 | /* Change the R_SH_USES reloc into an R_SH_IND12W reloc, and |
| 1245 | replace the jsr with a bsr. */ |
| 1246 | irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irelfn->r_info), R_SH_IND12W); |
| 1247 | if (ELF32_R_SYM (irelfn->r_info) < symtab_hdr->sh_info) |
| 1248 | { |
| 1249 | /* If this needs to be changed because of future relaxing, |
| 1250 | it will be handled here like other internal IND12W |
| 1251 | relocs. */ |
| 1252 | bfd_put_16 (abfd, |
| 1253 | (bfd_vma) 0xb000 | ((foff >> 1) & 0xfff), |
| 1254 | contents + irel->r_offset); |
| 1255 | } |
| 1256 | else |
| 1257 | { |
| 1258 | /* We can't fully resolve this yet, because the external |
| 1259 | symbol value may be changed by future relaxing. We let |
| 1260 | the final link phase handle it. */ |
| 1261 | bfd_put_16 (abfd, (bfd_vma) 0xb000, contents + irel->r_offset); |
| 1262 | } |
| 1263 | |
| 1264 | /* See if there is another R_SH_USES reloc referring to the same |
| 1265 | register load. */ |
| 1266 | for (irelscan = internal_relocs; irelscan < irelend; irelscan++) |
| 1267 | if (ELF32_R_TYPE (irelscan->r_info) == (int) R_SH_USES |
| 1268 | && laddr == irelscan->r_offset + 4 + irelscan->r_addend) |
| 1269 | break; |
| 1270 | if (irelscan < irelend) |
| 1271 | { |
| 1272 | /* Some other function call depends upon this register load, |
| 1273 | and we have not yet converted that function call. |
| 1274 | Indeed, we may never be able to convert it. There is |
| 1275 | nothing else we can do at this point. */ |
| 1276 | continue; |
| 1277 | } |
| 1278 | |
| 1279 | /* Look for a R_SH_COUNT reloc on the location where the |
| 1280 | function address is stored. Do this before deleting any |
| 1281 | bytes, to avoid confusion about the address. */ |
| 1282 | for (irelcount = internal_relocs; irelcount < irelend; irelcount++) |
| 1283 | if (irelcount->r_offset == paddr |
| 1284 | && ELF32_R_TYPE (irelcount->r_info) == (int) R_SH_COUNT) |
| 1285 | break; |
| 1286 | |
| 1287 | /* Delete the register load. */ |
| 1288 | if (! sh_elf_relax_delete_bytes (abfd, sec, laddr, 2)) |
| 1289 | goto error_return; |
| 1290 | |
| 1291 | /* That will change things, so, just in case it permits some |
| 1292 | other function call to come within range, we should relax |
| 1293 | again. Note that this is not required, and it may be slow. */ |
| 1294 | *again = true; |
| 1295 | |
| 1296 | /* Now check whether we got a COUNT reloc. */ |
| 1297 | if (irelcount >= irelend) |
| 1298 | { |
| 1299 | ((*_bfd_error_handler) |
| 1300 | (_("%s: 0x%lx: warning: could not find expected COUNT reloc"), |
| 1301 | bfd_get_filename (abfd), (unsigned long) paddr)); |
| 1302 | continue; |
| 1303 | } |
| 1304 | |
| 1305 | /* The number of uses is stored in the r_addend field. We've |
| 1306 | just deleted one. */ |
| 1307 | if (irelcount->r_addend == 0) |
| 1308 | { |
| 1309 | ((*_bfd_error_handler) (_("%s: 0x%lx: warning: bad count"), |
| 1310 | bfd_get_filename (abfd), |
| 1311 | (unsigned long) paddr)); |
| 1312 | continue; |
| 1313 | } |
| 1314 | |
| 1315 | --irelcount->r_addend; |
| 1316 | |
| 1317 | /* If there are no more uses, we can delete the address. Reload |
| 1318 | the address from irelfn, in case it was changed by the |
| 1319 | previous call to sh_elf_relax_delete_bytes. */ |
| 1320 | if (irelcount->r_addend == 0) |
| 1321 | { |
| 1322 | if (! sh_elf_relax_delete_bytes (abfd, sec, irelfn->r_offset, 4)) |
| 1323 | goto error_return; |
| 1324 | } |
| 1325 | |
| 1326 | /* We've done all we can with that function call. */ |
| 1327 | } |
| 1328 | |
| 1329 | /* Look for load and store instructions that we can align on four |
| 1330 | byte boundaries. */ |
| 1331 | if (have_code) |
| 1332 | { |
| 1333 | boolean swapped; |
| 1334 | |
| 1335 | /* Get the section contents. */ |
| 1336 | if (contents == NULL) |
| 1337 | { |
| 1338 | if (elf_section_data (sec)->this_hdr.contents != NULL) |
| 1339 | contents = elf_section_data (sec)->this_hdr.contents; |
| 1340 | else |
| 1341 | { |
| 1342 | contents = (bfd_byte *) bfd_malloc (sec->_raw_size); |
| 1343 | if (contents == NULL) |
| 1344 | goto error_return; |
| 1345 | free_contents = contents; |
| 1346 | |
| 1347 | if (! bfd_get_section_contents (abfd, sec, contents, |
| 1348 | (file_ptr) 0, sec->_raw_size)) |
| 1349 | goto error_return; |
| 1350 | } |
| 1351 | } |
| 1352 | |
| 1353 | if (! sh_elf_align_loads (abfd, sec, internal_relocs, contents, |
| 1354 | &swapped)) |
| 1355 | goto error_return; |
| 1356 | |
| 1357 | if (swapped) |
| 1358 | { |
| 1359 | elf_section_data (sec)->relocs = internal_relocs; |
| 1360 | free_relocs = NULL; |
| 1361 | |
| 1362 | elf_section_data (sec)->this_hdr.contents = contents; |
| 1363 | free_contents = NULL; |
| 1364 | |
| 1365 | symtab_hdr->contents = (bfd_byte *) extsyms; |
| 1366 | free_extsyms = NULL; |
| 1367 | } |
| 1368 | } |
| 1369 | |
| 1370 | if (free_relocs != NULL) |
| 1371 | { |
| 1372 | free (free_relocs); |
| 1373 | free_relocs = NULL; |
| 1374 | } |
| 1375 | |
| 1376 | if (free_contents != NULL) |
| 1377 | { |
| 1378 | if (! link_info->keep_memory) |
| 1379 | free (free_contents); |
| 1380 | else |
| 1381 | { |
| 1382 | /* Cache the section contents for elf_link_input_bfd. */ |
| 1383 | elf_section_data (sec)->this_hdr.contents = contents; |
| 1384 | } |
| 1385 | free_contents = NULL; |
| 1386 | } |
| 1387 | |
| 1388 | if (free_extsyms != NULL) |
| 1389 | { |
| 1390 | if (! link_info->keep_memory) |
| 1391 | free (free_extsyms); |
| 1392 | else |
| 1393 | { |
| 1394 | /* Cache the symbols for elf_link_input_bfd. */ |
| 1395 | symtab_hdr->contents = extsyms; |
| 1396 | } |
| 1397 | free_extsyms = NULL; |
| 1398 | } |
| 1399 | |
| 1400 | return true; |
| 1401 | |
| 1402 | error_return: |
| 1403 | if (free_relocs != NULL) |
| 1404 | free (free_relocs); |
| 1405 | if (free_contents != NULL) |
| 1406 | free (free_contents); |
| 1407 | if (free_extsyms != NULL) |
| 1408 | free (free_extsyms); |
| 1409 | return false; |
| 1410 | } |
| 1411 | |
| 1412 | /* Delete some bytes from a section while relaxing. FIXME: There is a |
| 1413 | lot of duplication between this function and sh_relax_delete_bytes |
| 1414 | in coff-sh.c. */ |
| 1415 | |
| 1416 | static boolean |
| 1417 | sh_elf_relax_delete_bytes (abfd, sec, addr, count) |
| 1418 | bfd *abfd; |
| 1419 | asection *sec; |
| 1420 | bfd_vma addr; |
| 1421 | int count; |
| 1422 | { |
| 1423 | Elf_Internal_Shdr *symtab_hdr; |
| 1424 | Elf32_External_Sym *extsyms; |
| 1425 | int shndx, index; |
| 1426 | bfd_byte *contents; |
| 1427 | Elf_Internal_Rela *irel, *irelend; |
| 1428 | Elf_Internal_Rela *irelalign; |
| 1429 | bfd_vma toaddr; |
| 1430 | Elf32_External_Sym *esym, *esymend; |
| 1431 | struct elf_link_hash_entry *sym_hash; |
| 1432 | asection *o; |
| 1433 | |
| 1434 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; |
| 1435 | extsyms = (Elf32_External_Sym *) symtab_hdr->contents; |
| 1436 | |
| 1437 | shndx = _bfd_elf_section_from_bfd_section (abfd, sec); |
| 1438 | |
| 1439 | contents = elf_section_data (sec)->this_hdr.contents; |
| 1440 | |
| 1441 | /* The deletion must stop at the next ALIGN reloc for an aligment |
| 1442 | power larger than the number of bytes we are deleting. */ |
| 1443 | |
| 1444 | irelalign = NULL; |
| 1445 | toaddr = sec->_cooked_size; |
| 1446 | |
| 1447 | irel = elf_section_data (sec)->relocs; |
| 1448 | irelend = irel + sec->reloc_count; |
| 1449 | for (; irel < irelend; irel++) |
| 1450 | { |
| 1451 | if (ELF32_R_TYPE (irel->r_info) == (int) R_SH_ALIGN |
| 1452 | && irel->r_offset > addr |
| 1453 | && count < (1 << irel->r_addend)) |
| 1454 | { |
| 1455 | irelalign = irel; |
| 1456 | toaddr = irel->r_offset; |
| 1457 | break; |
| 1458 | } |
| 1459 | } |
| 1460 | |
| 1461 | /* Actually delete the bytes. */ |
| 1462 | memmove (contents + addr, contents + addr + count, |
| 1463 | (size_t) (toaddr - addr - count)); |
| 1464 | if (irelalign == NULL) |
| 1465 | sec->_cooked_size -= count; |
| 1466 | else |
| 1467 | { |
| 1468 | int i; |
| 1469 | |
| 1470 | #define NOP_OPCODE (0x0009) |
| 1471 | |
| 1472 | BFD_ASSERT ((count & 1) == 0); |
| 1473 | for (i = 0; i < count; i += 2) |
| 1474 | bfd_put_16 (abfd, (bfd_vma) NOP_OPCODE, contents + toaddr - count + i); |
| 1475 | } |
| 1476 | |
| 1477 | /* Adjust all the relocs. */ |
| 1478 | for (irel = elf_section_data (sec)->relocs; irel < irelend; irel++) |
| 1479 | { |
| 1480 | bfd_vma nraddr, stop; |
| 1481 | bfd_vma start = 0; |
| 1482 | int insn = 0; |
| 1483 | Elf_Internal_Sym sym; |
| 1484 | int off, adjust, oinsn; |
| 1485 | bfd_signed_vma voff = 0; |
| 1486 | boolean overflow; |
| 1487 | |
| 1488 | /* Get the new reloc address. */ |
| 1489 | nraddr = irel->r_offset; |
| 1490 | if ((irel->r_offset > addr |
| 1491 | && irel->r_offset < toaddr) |
| 1492 | || (ELF32_R_TYPE (irel->r_info) == (int) R_SH_ALIGN |
| 1493 | && irel->r_offset == toaddr)) |
| 1494 | nraddr -= count; |
| 1495 | |
| 1496 | /* See if this reloc was for the bytes we have deleted, in which |
| 1497 | case we no longer care about it. Don't delete relocs which |
| 1498 | represent addresses, though. */ |
| 1499 | if (irel->r_offset >= addr |
| 1500 | && irel->r_offset < addr + count |
| 1501 | && ELF32_R_TYPE (irel->r_info) != (int) R_SH_ALIGN |
| 1502 | && ELF32_R_TYPE (irel->r_info) != (int) R_SH_CODE |
| 1503 | && ELF32_R_TYPE (irel->r_info) != (int) R_SH_DATA |
| 1504 | && ELF32_R_TYPE (irel->r_info) != (int) R_SH_LABEL) |
| 1505 | irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), |
| 1506 | (int) R_SH_NONE); |
| 1507 | |
| 1508 | /* If this is a PC relative reloc, see if the range it covers |
| 1509 | includes the bytes we have deleted. */ |
| 1510 | switch ((enum elf_sh_reloc_type) ELF32_R_TYPE (irel->r_info)) |
| 1511 | { |
| 1512 | default: |
| 1513 | break; |
| 1514 | |
| 1515 | case R_SH_DIR8WPN: |
| 1516 | case R_SH_IND12W: |
| 1517 | case R_SH_DIR8WPZ: |
| 1518 | case R_SH_DIR8WPL: |
| 1519 | start = irel->r_offset; |
| 1520 | insn = bfd_get_16 (abfd, contents + nraddr); |
| 1521 | break; |
| 1522 | } |
| 1523 | |
| 1524 | switch ((enum elf_sh_reloc_type) ELF32_R_TYPE (irel->r_info)) |
| 1525 | { |
| 1526 | default: |
| 1527 | start = stop = addr; |
| 1528 | break; |
| 1529 | |
| 1530 | case R_SH_DIR32: |
| 1531 | /* If this reloc is against a symbol defined in this |
| 1532 | section, and the symbol will not be adjusted below, we |
| 1533 | must check the addend to see it will put the value in |
| 1534 | range to be adjusted, and hence must be changed. */ |
| 1535 | if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info) |
| 1536 | { |
| 1537 | bfd_elf32_swap_symbol_in (abfd, |
| 1538 | extsyms + ELF32_R_SYM (irel->r_info), |
| 1539 | &sym); |
| 1540 | if (sym.st_shndx == shndx |
| 1541 | && (sym.st_value <= addr |
| 1542 | || sym.st_value >= toaddr)) |
| 1543 | { |
| 1544 | bfd_vma val; |
| 1545 | |
| 1546 | val = bfd_get_32 (abfd, contents + nraddr); |
| 1547 | val += sym.st_value; |
| 1548 | if (val > addr && val < toaddr) |
| 1549 | bfd_put_32 (abfd, val - count, contents + nraddr); |
| 1550 | } |
| 1551 | } |
| 1552 | start = stop = addr; |
| 1553 | break; |
| 1554 | |
| 1555 | case R_SH_DIR8WPN: |
| 1556 | off = insn & 0xff; |
| 1557 | if (off & 0x80) |
| 1558 | off -= 0x100; |
| 1559 | stop = (bfd_vma) ((bfd_signed_vma) start + 4 + off * 2); |
| 1560 | break; |
| 1561 | |
| 1562 | case R_SH_IND12W: |
| 1563 | if (ELF32_R_SYM (irel->r_info) >= symtab_hdr->sh_info) |
| 1564 | start = stop = addr; |
| 1565 | else |
| 1566 | { |
| 1567 | off = insn & 0xfff; |
| 1568 | if (off & 0x800) |
| 1569 | off -= 0x1000; |
| 1570 | stop = (bfd_vma) ((bfd_signed_vma) start + 4 + off * 2); |
| 1571 | } |
| 1572 | break; |
| 1573 | |
| 1574 | case R_SH_DIR8WPZ: |
| 1575 | off = insn & 0xff; |
| 1576 | stop = start + 4 + off * 2; |
| 1577 | break; |
| 1578 | |
| 1579 | case R_SH_DIR8WPL: |
| 1580 | off = insn & 0xff; |
| 1581 | stop = (start & ~(bfd_vma) 3) + 4 + off * 4; |
| 1582 | break; |
| 1583 | |
| 1584 | case R_SH_SWITCH8: |
| 1585 | case R_SH_SWITCH16: |
| 1586 | case R_SH_SWITCH32: |
| 1587 | /* These relocs types represent |
| 1588 | .word L2-L1 |
| 1589 | The r_addend field holds the difference between the reloc |
| 1590 | address and L1. That is the start of the reloc, and |
| 1591 | adding in the contents gives us the top. We must adjust |
| 1592 | both the r_offset field and the section contents. |
| 1593 | N.B. in gas / coff bfd, the elf bfd r_addend is called r_offset, |
| 1594 | and the elf bfd r_offset is called r_vaddr. */ |
| 1595 | |
| 1596 | stop = irel->r_offset; |
| 1597 | start = (bfd_vma) ((bfd_signed_vma) stop - (long) irel->r_addend); |
| 1598 | |
| 1599 | if (start > addr |
| 1600 | && start < toaddr |
| 1601 | && (stop <= addr || stop >= toaddr)) |
| 1602 | irel->r_addend += count; |
| 1603 | else if (stop > addr |
| 1604 | && stop < toaddr |
| 1605 | && (start <= addr || start >= toaddr)) |
| 1606 | irel->r_addend -= count; |
| 1607 | |
| 1608 | if (ELF32_R_TYPE (irel->r_info) == (int) R_SH_SWITCH16) |
| 1609 | voff = bfd_get_signed_16 (abfd, contents + nraddr); |
| 1610 | else if (ELF32_R_TYPE (irel->r_info) == (int) R_SH_SWITCH8) |
| 1611 | voff = bfd_get_8 (abfd, contents + nraddr); |
| 1612 | else |
| 1613 | voff = bfd_get_signed_32 (abfd, contents + nraddr); |
| 1614 | stop = (bfd_vma) ((bfd_signed_vma) start + voff); |
| 1615 | |
| 1616 | break; |
| 1617 | |
| 1618 | case R_SH_USES: |
| 1619 | start = irel->r_offset; |
| 1620 | stop = (bfd_vma) ((bfd_signed_vma) start |
| 1621 | + (long) irel->r_addend |
| 1622 | + 4); |
| 1623 | break; |
| 1624 | } |
| 1625 | |
| 1626 | if (start > addr |
| 1627 | && start < toaddr |
| 1628 | && (stop <= addr || stop >= toaddr)) |
| 1629 | adjust = count; |
| 1630 | else if (stop > addr |
| 1631 | && stop < toaddr |
| 1632 | && (start <= addr || start >= toaddr)) |
| 1633 | adjust = - count; |
| 1634 | else |
| 1635 | adjust = 0; |
| 1636 | |
| 1637 | if (adjust != 0) |
| 1638 | { |
| 1639 | oinsn = insn; |
| 1640 | overflow = false; |
| 1641 | switch ((enum elf_sh_reloc_type) ELF32_R_TYPE (irel->r_info)) |
| 1642 | { |
| 1643 | default: |
| 1644 | abort (); |
| 1645 | break; |
| 1646 | |
| 1647 | case R_SH_DIR8WPN: |
| 1648 | case R_SH_DIR8WPZ: |
| 1649 | insn += adjust / 2; |
| 1650 | if ((oinsn & 0xff00) != (insn & 0xff00)) |
| 1651 | overflow = true; |
| 1652 | bfd_put_16 (abfd, (bfd_vma) insn, contents + nraddr); |
| 1653 | break; |
| 1654 | |
| 1655 | case R_SH_IND12W: |
| 1656 | insn += adjust / 2; |
| 1657 | if ((oinsn & 0xf000) != (insn & 0xf000)) |
| 1658 | overflow = true; |
| 1659 | bfd_put_16 (abfd, (bfd_vma) insn, contents + nraddr); |
| 1660 | break; |
| 1661 | |
| 1662 | case R_SH_DIR8WPL: |
| 1663 | BFD_ASSERT (adjust == count || count >= 4); |
| 1664 | if (count >= 4) |
| 1665 | insn += adjust / 4; |
| 1666 | else |
| 1667 | { |
| 1668 | if ((irel->r_offset & 3) == 0) |
| 1669 | ++insn; |
| 1670 | } |
| 1671 | if ((oinsn & 0xff00) != (insn & 0xff00)) |
| 1672 | overflow = true; |
| 1673 | bfd_put_16 (abfd, (bfd_vma) insn, contents + nraddr); |
| 1674 | break; |
| 1675 | |
| 1676 | case R_SH_SWITCH8: |
| 1677 | voff += adjust; |
| 1678 | if (voff < 0 || voff >= 0xff) |
| 1679 | overflow = true; |
| 1680 | bfd_put_8 (abfd, voff, contents + nraddr); |
| 1681 | break; |
| 1682 | |
| 1683 | case R_SH_SWITCH16: |
| 1684 | voff += adjust; |
| 1685 | if (voff < - 0x8000 || voff >= 0x8000) |
| 1686 | overflow = true; |
| 1687 | bfd_put_signed_16 (abfd, (bfd_vma) voff, contents + nraddr); |
| 1688 | break; |
| 1689 | |
| 1690 | case R_SH_SWITCH32: |
| 1691 | voff += adjust; |
| 1692 | bfd_put_signed_32 (abfd, (bfd_vma) voff, contents + nraddr); |
| 1693 | break; |
| 1694 | |
| 1695 | case R_SH_USES: |
| 1696 | irel->r_addend += adjust; |
| 1697 | break; |
| 1698 | } |
| 1699 | |
| 1700 | if (overflow) |
| 1701 | { |
| 1702 | ((*_bfd_error_handler) |
| 1703 | (_("%s: 0x%lx: fatal: reloc overflow while relaxing"), |
| 1704 | bfd_get_filename (abfd), (unsigned long) irel->r_offset)); |
| 1705 | bfd_set_error (bfd_error_bad_value); |
| 1706 | return false; |
| 1707 | } |
| 1708 | } |
| 1709 | |
| 1710 | irel->r_offset = nraddr; |
| 1711 | } |
| 1712 | |
| 1713 | /* Look through all the other sections. If there contain any IMM32 |
| 1714 | relocs against internal symbols which we are not going to adjust |
| 1715 | below, we may need to adjust the addends. */ |
| 1716 | for (o = abfd->sections; o != NULL; o = o->next) |
| 1717 | { |
| 1718 | Elf_Internal_Rela *internal_relocs; |
| 1719 | Elf_Internal_Rela *irelscan, *irelscanend; |
| 1720 | bfd_byte *ocontents; |
| 1721 | |
| 1722 | if (o == sec |
| 1723 | || (o->flags & SEC_RELOC) == 0 |
| 1724 | || o->reloc_count == 0) |
| 1725 | continue; |
| 1726 | |
| 1727 | /* We always cache the relocs. Perhaps, if info->keep_memory is |
| 1728 | false, we should free them, if we are permitted to, when we |
| 1729 | leave sh_coff_relax_section. */ |
| 1730 | internal_relocs = (_bfd_elf32_link_read_relocs |
| 1731 | (abfd, o, (PTR) NULL, (Elf_Internal_Rela *) NULL, |
| 1732 | true)); |
| 1733 | if (internal_relocs == NULL) |
| 1734 | return false; |
| 1735 | |
| 1736 | ocontents = NULL; |
| 1737 | irelscanend = internal_relocs + o->reloc_count; |
| 1738 | for (irelscan = internal_relocs; irelscan < irelscanend; irelscan++) |
| 1739 | { |
| 1740 | Elf_Internal_Sym sym; |
| 1741 | |
| 1742 | /* Dwarf line numbers use R_SH_SWITCH32 relocs. */ |
| 1743 | if (ELF32_R_TYPE (irelscan->r_info) == (int) R_SH_SWITCH32) |
| 1744 | { |
| 1745 | bfd_vma start, stop; |
| 1746 | bfd_signed_vma voff; |
| 1747 | |
| 1748 | if (ocontents == NULL) |
| 1749 | { |
| 1750 | if (elf_section_data (o)->this_hdr.contents != NULL) |
| 1751 | ocontents = elf_section_data (o)->this_hdr.contents; |
| 1752 | else |
| 1753 | { |
| 1754 | /* We always cache the section contents. |
| 1755 | Perhaps, if info->keep_memory is false, we |
| 1756 | should free them, if we are permitted to, |
| 1757 | when we leave sh_coff_relax_section. */ |
| 1758 | ocontents = (bfd_byte *) bfd_malloc (o->_raw_size); |
| 1759 | if (ocontents == NULL) |
| 1760 | return false; |
| 1761 | if (! bfd_get_section_contents (abfd, o, ocontents, |
| 1762 | (file_ptr) 0, |
| 1763 | o->_raw_size)) |
| 1764 | return false; |
| 1765 | elf_section_data (o)->this_hdr.contents = ocontents; |
| 1766 | } |
| 1767 | } |
| 1768 | |
| 1769 | stop = irelscan->r_offset; |
| 1770 | start |
| 1771 | = (bfd_vma) ((bfd_signed_vma) stop - (long) irelscan->r_addend); |
| 1772 | |
| 1773 | /* STOP is in a different section, so it won't change. */ |
| 1774 | if (start > addr && start < toaddr) |
| 1775 | irelscan->r_addend += count; |
| 1776 | |
| 1777 | voff = bfd_get_signed_32 (abfd, ocontents + irelscan->r_offset); |
| 1778 | stop = (bfd_vma) ((bfd_signed_vma) start + voff); |
| 1779 | |
| 1780 | if (start > addr |
| 1781 | && start < toaddr |
| 1782 | && (stop <= addr || stop >= toaddr)) |
| 1783 | bfd_put_signed_32 (abfd, (bfd_vma) voff + count, |
| 1784 | ocontents + irelscan->r_offset); |
| 1785 | else if (stop > addr |
| 1786 | && stop < toaddr |
| 1787 | && (start <= addr || start >= toaddr)) |
| 1788 | bfd_put_signed_32 (abfd, (bfd_vma) voff - count, |
| 1789 | ocontents + irelscan->r_offset); |
| 1790 | } |
| 1791 | |
| 1792 | if (ELF32_R_TYPE (irelscan->r_info) != (int) R_SH_DIR32) |
| 1793 | continue; |
| 1794 | |
| 1795 | if (ELF32_R_SYM (irelscan->r_info) >= symtab_hdr->sh_info) |
| 1796 | continue; |
| 1797 | |
| 1798 | bfd_elf32_swap_symbol_in (abfd, |
| 1799 | extsyms + ELF32_R_SYM (irelscan->r_info), |
| 1800 | &sym); |
| 1801 | |
| 1802 | if (sym.st_shndx == shndx |
| 1803 | && (sym.st_value <= addr |
| 1804 | || sym.st_value >= toaddr)) |
| 1805 | { |
| 1806 | bfd_vma val; |
| 1807 | |
| 1808 | if (ocontents == NULL) |
| 1809 | { |
| 1810 | if (elf_section_data (o)->this_hdr.contents != NULL) |
| 1811 | ocontents = elf_section_data (o)->this_hdr.contents; |
| 1812 | else |
| 1813 | { |
| 1814 | /* We always cache the section contents. |
| 1815 | Perhaps, if info->keep_memory is false, we |
| 1816 | should free them, if we are permitted to, |
| 1817 | when we leave sh_coff_relax_section. */ |
| 1818 | ocontents = (bfd_byte *) bfd_malloc (o->_raw_size); |
| 1819 | if (ocontents == NULL) |
| 1820 | return false; |
| 1821 | if (! bfd_get_section_contents (abfd, o, ocontents, |
| 1822 | (file_ptr) 0, |
| 1823 | o->_raw_size)) |
| 1824 | return false; |
| 1825 | elf_section_data (o)->this_hdr.contents = ocontents; |
| 1826 | } |
| 1827 | } |
| 1828 | |
| 1829 | val = bfd_get_32 (abfd, ocontents + irelscan->r_offset); |
| 1830 | val += sym.st_value; |
| 1831 | if (val > addr && val < toaddr) |
| 1832 | bfd_put_32 (abfd, val - count, |
| 1833 | ocontents + irelscan->r_offset); |
| 1834 | } |
| 1835 | } |
| 1836 | } |
| 1837 | |
| 1838 | /* Adjust the local symbols defined in this section. */ |
| 1839 | esym = extsyms; |
| 1840 | esymend = esym + symtab_hdr->sh_info; |
| 1841 | for (; esym < esymend; esym++) |
| 1842 | { |
| 1843 | Elf_Internal_Sym isym; |
| 1844 | |
| 1845 | bfd_elf32_swap_symbol_in (abfd, esym, &isym); |
| 1846 | |
| 1847 | if (isym.st_shndx == shndx |
| 1848 | && isym.st_value > addr |
| 1849 | && isym.st_value < toaddr) |
| 1850 | { |
| 1851 | isym.st_value -= count; |
| 1852 | bfd_elf32_swap_symbol_out (abfd, &isym, esym); |
| 1853 | } |
| 1854 | } |
| 1855 | |
| 1856 | /* Now adjust the global symbols defined in this section. */ |
| 1857 | esym = extsyms + symtab_hdr->sh_info; |
| 1858 | esymend = extsyms + (symtab_hdr->sh_size / sizeof (Elf32_External_Sym)); |
| 1859 | for (index = 0; esym < esymend; esym++, index++) |
| 1860 | { |
| 1861 | Elf_Internal_Sym isym; |
| 1862 | |
| 1863 | bfd_elf32_swap_symbol_in (abfd, esym, &isym); |
| 1864 | sym_hash = elf_sym_hashes (abfd)[index]; |
| 1865 | if (isym.st_shndx == shndx |
| 1866 | && ((sym_hash)->root.type == bfd_link_hash_defined |
| 1867 | || (sym_hash)->root.type == bfd_link_hash_defweak) |
| 1868 | && (sym_hash)->root.u.def.section == sec |
| 1869 | && (sym_hash)->root.u.def.value > addr |
| 1870 | && (sym_hash)->root.u.def.value < toaddr) |
| 1871 | { |
| 1872 | (sym_hash)->root.u.def.value -= count; |
| 1873 | } |
| 1874 | } |
| 1875 | |
| 1876 | /* See if we can move the ALIGN reloc forward. We have adjusted |
| 1877 | r_offset for it already. */ |
| 1878 | if (irelalign != NULL) |
| 1879 | { |
| 1880 | bfd_vma alignto, alignaddr; |
| 1881 | |
| 1882 | alignto = BFD_ALIGN (toaddr, 1 << irelalign->r_addend); |
| 1883 | alignaddr = BFD_ALIGN (irelalign->r_offset, |
| 1884 | 1 << irelalign->r_addend); |
| 1885 | if (alignto != alignaddr) |
| 1886 | { |
| 1887 | /* Tail recursion. */ |
| 1888 | return sh_elf_relax_delete_bytes (abfd, sec, alignaddr, |
| 1889 | (int) (alignto - alignaddr)); |
| 1890 | } |
| 1891 | } |
| 1892 | |
| 1893 | return true; |
| 1894 | } |
| 1895 | |
| 1896 | /* Look for loads and stores which we can align to four byte |
| 1897 | boundaries. This is like sh_align_loads in coff-sh.c. */ |
| 1898 | |
| 1899 | static boolean |
| 1900 | sh_elf_align_loads (abfd, sec, internal_relocs, contents, pswapped) |
| 1901 | bfd *abfd; |
| 1902 | asection *sec; |
| 1903 | Elf_Internal_Rela *internal_relocs; |
| 1904 | bfd_byte *contents; |
| 1905 | boolean *pswapped; |
| 1906 | { |
| 1907 | Elf_Internal_Rela *irel, *irelend; |
| 1908 | bfd_vma *labels = NULL; |
| 1909 | bfd_vma *label, *label_end; |
| 1910 | bfd_size_type amt; |
| 1911 | |
| 1912 | *pswapped = false; |
| 1913 | |
| 1914 | irelend = internal_relocs + sec->reloc_count; |
| 1915 | |
| 1916 | /* Get all the addresses with labels on them. */ |
| 1917 | amt = sec->reloc_count; |
| 1918 | amt *= sizeof (bfd_vma); |
| 1919 | labels = (bfd_vma *) bfd_malloc (amt); |
| 1920 | if (labels == NULL) |
| 1921 | goto error_return; |
| 1922 | label_end = labels; |
| 1923 | for (irel = internal_relocs; irel < irelend; irel++) |
| 1924 | { |
| 1925 | if (ELF32_R_TYPE (irel->r_info) == (int) R_SH_LABEL) |
| 1926 | { |
| 1927 | *label_end = irel->r_offset; |
| 1928 | ++label_end; |
| 1929 | } |
| 1930 | } |
| 1931 | |
| 1932 | /* Note that the assembler currently always outputs relocs in |
| 1933 | address order. If that ever changes, this code will need to sort |
| 1934 | the label values and the relocs. */ |
| 1935 | |
| 1936 | label = labels; |
| 1937 | |
| 1938 | for (irel = internal_relocs; irel < irelend; irel++) |
| 1939 | { |
| 1940 | bfd_vma start, stop; |
| 1941 | |
| 1942 | if (ELF32_R_TYPE (irel->r_info) != (int) R_SH_CODE) |
| 1943 | continue; |
| 1944 | |
| 1945 | start = irel->r_offset; |
| 1946 | |
| 1947 | for (irel++; irel < irelend; irel++) |
| 1948 | if (ELF32_R_TYPE (irel->r_info) == (int) R_SH_DATA) |
| 1949 | break; |
| 1950 | if (irel < irelend) |
| 1951 | stop = irel->r_offset; |
| 1952 | else |
| 1953 | stop = sec->_cooked_size; |
| 1954 | |
| 1955 | if (! _bfd_sh_align_load_span (abfd, sec, contents, sh_elf_swap_insns, |
| 1956 | (PTR) internal_relocs, &label, |
| 1957 | label_end, start, stop, pswapped)) |
| 1958 | goto error_return; |
| 1959 | } |
| 1960 | |
| 1961 | free (labels); |
| 1962 | |
| 1963 | return true; |
| 1964 | |
| 1965 | error_return: |
| 1966 | if (labels != NULL) |
| 1967 | free (labels); |
| 1968 | return false; |
| 1969 | } |
| 1970 | |
| 1971 | /* Swap two SH instructions. This is like sh_swap_insns in coff-sh.c. */ |
| 1972 | |
| 1973 | static boolean |
| 1974 | sh_elf_swap_insns (abfd, sec, relocs, contents, addr) |
| 1975 | bfd *abfd; |
| 1976 | asection *sec; |
| 1977 | PTR relocs; |
| 1978 | bfd_byte *contents; |
| 1979 | bfd_vma addr; |
| 1980 | { |
| 1981 | Elf_Internal_Rela *internal_relocs = (Elf_Internal_Rela *) relocs; |
| 1982 | unsigned short i1, i2; |
| 1983 | Elf_Internal_Rela *irel, *irelend; |
| 1984 | |
| 1985 | /* Swap the instructions themselves. */ |
| 1986 | i1 = bfd_get_16 (abfd, contents + addr); |
| 1987 | i2 = bfd_get_16 (abfd, contents + addr + 2); |
| 1988 | bfd_put_16 (abfd, (bfd_vma) i2, contents + addr); |
| 1989 | bfd_put_16 (abfd, (bfd_vma) i1, contents + addr + 2); |
| 1990 | |
| 1991 | /* Adjust all reloc addresses. */ |
| 1992 | irelend = internal_relocs + sec->reloc_count; |
| 1993 | for (irel = internal_relocs; irel < irelend; irel++) |
| 1994 | { |
| 1995 | enum elf_sh_reloc_type type; |
| 1996 | int add; |
| 1997 | |
| 1998 | /* There are a few special types of relocs that we don't want to |
| 1999 | adjust. These relocs do not apply to the instruction itself, |
| 2000 | but are only associated with the address. */ |
| 2001 | type = (enum elf_sh_reloc_type) ELF32_R_TYPE (irel->r_info); |
| 2002 | if (type == R_SH_ALIGN |
| 2003 | || type == R_SH_CODE |
| 2004 | || type == R_SH_DATA |
| 2005 | || type == R_SH_LABEL) |
| 2006 | continue; |
| 2007 | |
| 2008 | /* If an R_SH_USES reloc points to one of the addresses being |
| 2009 | swapped, we must adjust it. It would be incorrect to do this |
| 2010 | for a jump, though, since we want to execute both |
| 2011 | instructions after the jump. (We have avoided swapping |
| 2012 | around a label, so the jump will not wind up executing an |
| 2013 | instruction it shouldn't). */ |
| 2014 | if (type == R_SH_USES) |
| 2015 | { |
| 2016 | bfd_vma off; |
| 2017 | |
| 2018 | off = irel->r_offset + 4 + irel->r_addend; |
| 2019 | if (off == addr) |
| 2020 | irel->r_offset += 2; |
| 2021 | else if (off == addr + 2) |
| 2022 | irel->r_offset -= 2; |
| 2023 | } |
| 2024 | |
| 2025 | if (irel->r_offset == addr) |
| 2026 | { |
| 2027 | irel->r_offset += 2; |
| 2028 | add = -2; |
| 2029 | } |
| 2030 | else if (irel->r_offset == addr + 2) |
| 2031 | { |
| 2032 | irel->r_offset -= 2; |
| 2033 | add = 2; |
| 2034 | } |
| 2035 | else |
| 2036 | add = 0; |
| 2037 | |
| 2038 | if (add != 0) |
| 2039 | { |
| 2040 | bfd_byte *loc; |
| 2041 | unsigned short insn, oinsn; |
| 2042 | boolean overflow; |
| 2043 | |
| 2044 | loc = contents + irel->r_offset; |
| 2045 | overflow = false; |
| 2046 | switch (type) |
| 2047 | { |
| 2048 | default: |
| 2049 | break; |
| 2050 | |
| 2051 | case R_SH_DIR8WPN: |
| 2052 | case R_SH_DIR8WPZ: |
| 2053 | insn = bfd_get_16 (abfd, loc); |
| 2054 | oinsn = insn; |
| 2055 | insn += add / 2; |
| 2056 | if ((oinsn & 0xff00) != (insn & 0xff00)) |
| 2057 | overflow = true; |
| 2058 | bfd_put_16 (abfd, (bfd_vma) insn, loc); |
| 2059 | break; |
| 2060 | |
| 2061 | case R_SH_IND12W: |
| 2062 | insn = bfd_get_16 (abfd, loc); |
| 2063 | oinsn = insn; |
| 2064 | insn += add / 2; |
| 2065 | if ((oinsn & 0xf000) != (insn & 0xf000)) |
| 2066 | overflow = true; |
| 2067 | bfd_put_16 (abfd, (bfd_vma) insn, loc); |
| 2068 | break; |
| 2069 | |
| 2070 | case R_SH_DIR8WPL: |
| 2071 | /* This reloc ignores the least significant 3 bits of |
| 2072 | the program counter before adding in the offset. |
| 2073 | This means that if ADDR is at an even address, the |
| 2074 | swap will not affect the offset. If ADDR is an at an |
| 2075 | odd address, then the instruction will be crossing a |
| 2076 | four byte boundary, and must be adjusted. */ |
| 2077 | if ((addr & 3) != 0) |
| 2078 | { |
| 2079 | insn = bfd_get_16 (abfd, loc); |
| 2080 | oinsn = insn; |
| 2081 | insn += add / 2; |
| 2082 | if ((oinsn & 0xff00) != (insn & 0xff00)) |
| 2083 | overflow = true; |
| 2084 | bfd_put_16 (abfd, (bfd_vma) insn, loc); |
| 2085 | } |
| 2086 | |
| 2087 | break; |
| 2088 | } |
| 2089 | |
| 2090 | if (overflow) |
| 2091 | { |
| 2092 | ((*_bfd_error_handler) |
| 2093 | (_("%s: 0x%lx: fatal: reloc overflow while relaxing"), |
| 2094 | bfd_get_filename (abfd), (unsigned long) irel->r_offset)); |
| 2095 | bfd_set_error (bfd_error_bad_value); |
| 2096 | return false; |
| 2097 | } |
| 2098 | } |
| 2099 | } |
| 2100 | |
| 2101 | return true; |
| 2102 | } |
| 2103 | \f |
| 2104 | /* The size in bytes of an entry in the procedure linkage table. */ |
| 2105 | |
| 2106 | #define PLT_ENTRY_SIZE 28 |
| 2107 | |
| 2108 | /* First entry in an absolute procedure linkage table look like this. */ |
| 2109 | |
| 2110 | #if 1 |
| 2111 | /* Note - this code has been "optimised" not to use r2. r2 is used by |
| 2112 | GCC to return the address of large strutcures, so it should not be |
| 2113 | corrupted here. This does mean however, that this PLT does not conform |
| 2114 | to the SH PIC ABI. That spec says that r0 contains the type of the PLT |
| 2115 | and r2 contains the GOT id. This version stores the GOT id in r0 and |
| 2116 | ignores the type. Loaders can easily detect this difference however, |
| 2117 | since the type will always be 0 or 8, and the GOT ids will always be |
| 2118 | greater than or equal to 12. */ |
| 2119 | static const bfd_byte elf_sh_plt0_entry_be[PLT_ENTRY_SIZE] = |
| 2120 | { |
| 2121 | 0xd0, 0x05, /* mov.l 2f,r0 */ |
| 2122 | 0x60, 0x02, /* mov.l @r0,r0 */ |
| 2123 | 0x2f, 0x06, /* mov.l r0,@-r15 */ |
| 2124 | 0xd0, 0x03, /* mov.l 1f,r0 */ |
| 2125 | 0x60, 0x02, /* mov.l @r0,r0 */ |
| 2126 | 0x40, 0x2b, /* jmp @r0 */ |
| 2127 | 0x60, 0xf6, /* mov.l @r15+,r0 */ |
| 2128 | 0x00, 0x09, /* nop */ |
| 2129 | 0x00, 0x09, /* nop */ |
| 2130 | 0x00, 0x09, /* nop */ |
| 2131 | 0, 0, 0, 0, /* 1: replaced with address of .got.plt + 8. */ |
| 2132 | 0, 0, 0, 0, /* 2: replaced with address of .got.plt + 4. */ |
| 2133 | }; |
| 2134 | |
| 2135 | static const bfd_byte elf_sh_plt0_entry_le[PLT_ENTRY_SIZE] = |
| 2136 | { |
| 2137 | 0x05, 0xd0, /* mov.l 2f,r0 */ |
| 2138 | 0x02, 0x60, /* mov.l @r0,r0 */ |
| 2139 | 0x06, 0x2f, /* mov.l r0,@-r15 */ |
| 2140 | 0x03, 0xd0, /* mov.l 1f,r0 */ |
| 2141 | 0x02, 0x60, /* mov.l @r0,r0 */ |
| 2142 | 0x2b, 0x40, /* jmp @r0 */ |
| 2143 | 0xf6, 0x60, /* mov.l @r15+,r0 */ |
| 2144 | 0x09, 0x00, /* nop */ |
| 2145 | 0x09, 0x00, /* nop */ |
| 2146 | 0x09, 0x00, /* nop */ |
| 2147 | 0, 0, 0, 0, /* 1: replaced with address of .got.plt + 8. */ |
| 2148 | 0, 0, 0, 0, /* 2: replaced with address of .got.plt + 4. */ |
| 2149 | }; |
| 2150 | |
| 2151 | /* Sebsequent entries in an absolute procedure linkage table look like |
| 2152 | this. */ |
| 2153 | |
| 2154 | static const bfd_byte elf_sh_plt_entry_be[PLT_ENTRY_SIZE] = |
| 2155 | { |
| 2156 | 0xd0, 0x04, /* mov.l 1f,r0 */ |
| 2157 | 0x60, 0x02, /* mov.l @r0,r0 */ |
| 2158 | 0xd1, 0x02, /* mov.l 0f,r1 */ |
| 2159 | 0x40, 0x2b, /* jmp @r0 */ |
| 2160 | 0x60, 0x13, /* mov r1,r0 */ |
| 2161 | 0xd1, 0x03, /* mov.l 2f,r1 */ |
| 2162 | 0x40, 0x2b, /* jmp @r0 */ |
| 2163 | 0x00, 0x09, /* nop */ |
| 2164 | 0, 0, 0, 0, /* 0: replaced with address of .PLT0. */ |
| 2165 | 0, 0, 0, 0, /* 1: replaced with address of this symbol in .got. */ |
| 2166 | 0, 0, 0, 0, /* 2: replaced with offset into relocation table. */ |
| 2167 | }; |
| 2168 | |
| 2169 | static const bfd_byte elf_sh_plt_entry_le[PLT_ENTRY_SIZE] = |
| 2170 | { |
| 2171 | 0x04, 0xd0, /* mov.l 1f,r0 */ |
| 2172 | 0x02, 0x60, /* mov.l @r0,r0 */ |
| 2173 | 0x02, 0xd1, /* mov.l 0f,r1 */ |
| 2174 | 0x2b, 0x40, /* jmp @r0 */ |
| 2175 | 0x13, 0x60, /* mov r1,r0 */ |
| 2176 | 0x03, 0xd1, /* mov.l 2f,r1 */ |
| 2177 | 0x2b, 0x40, /* jmp @r0 */ |
| 2178 | 0x09, 0x00, /* nop */ |
| 2179 | 0, 0, 0, 0, /* 0: replaced with address of .PLT0. */ |
| 2180 | 0, 0, 0, 0, /* 1: replaced with address of this symbol in .got. */ |
| 2181 | 0, 0, 0, 0, /* 2: replaced with offset into relocation table. */ |
| 2182 | }; |
| 2183 | |
| 2184 | /* Entries in a PIC procedure linkage table look like this. */ |
| 2185 | |
| 2186 | static const bfd_byte elf_sh_pic_plt_entry_be[PLT_ENTRY_SIZE] = |
| 2187 | { |
| 2188 | 0xd0, 0x04, /* mov.l 1f,r0 */ |
| 2189 | 0x00, 0xce, /* mov.l @(r0,r12),r0 */ |
| 2190 | 0x40, 0x2b, /* jmp @r0 */ |
| 2191 | 0x00, 0x09, /* nop */ |
| 2192 | 0x50, 0xc2, /* mov.l @(8,r12),r0 */ |
| 2193 | 0xd1, 0x03, /* mov.l 2f,r1 */ |
| 2194 | 0x40, 0x2b, /* jmp @r0 */ |
| 2195 | 0x50, 0xc1, /* mov.l @(4,r12),r0 */ |
| 2196 | 0x00, 0x09, /* nop */ |
| 2197 | 0x00, 0x09, /* nop */ |
| 2198 | 0, 0, 0, 0, /* 1: replaced with address of this symbol in .got. */ |
| 2199 | 0, 0, 0, 0 /* 2: replaced with offset into relocation table. */ |
| 2200 | }; |
| 2201 | |
| 2202 | static const bfd_byte elf_sh_pic_plt_entry_le[PLT_ENTRY_SIZE] = |
| 2203 | { |
| 2204 | 0x04, 0xd0, /* mov.l 1f,r0 */ |
| 2205 | 0xce, 0x00, /* mov.l @(r0,r12),r0 */ |
| 2206 | 0x2b, 0x40, /* jmp @r0 */ |
| 2207 | 0x09, 0x00, /* nop */ |
| 2208 | 0xc2, 0x50, /* mov.l @(8,r12),r0 */ |
| 2209 | 0x03, 0xd1, /* mov.l 2f,r1 */ |
| 2210 | 0x2b, 0x40, /* jmp @r0 */ |
| 2211 | 0xc1, 0x50, /* mov.l @(4,r12),r0 */ |
| 2212 | 0x09, 0x00, /* nop */ |
| 2213 | 0x09, 0x00, /* nop */ |
| 2214 | 0, 0, 0, 0, /* 1: replaced with address of this symbol in .got. */ |
| 2215 | 0, 0, 0, 0 /* 2: replaced with offset into relocation table. */ |
| 2216 | }; |
| 2217 | |
| 2218 | #else /* These are the old style PLT entries. */ |
| 2219 | static const bfd_byte elf_sh_plt0_entry_be[PLT_ENTRY_SIZE] = |
| 2220 | { |
| 2221 | 0xd0, 0x04, /* mov.l 1f,r0 */ |
| 2222 | 0xd2, 0x05, /* mov.l 2f,r2 */ |
| 2223 | 0x60, 0x02, /* mov.l @r0,r0 */ |
| 2224 | 0x62, 0x22, /* mov.l @r2,r2 */ |
| 2225 | 0x40, 0x2b, /* jmp @r0 */ |
| 2226 | 0xe0, 0x00, /* mov #0,r0 */ |
| 2227 | 0x00, 0x09, /* nop */ |
| 2228 | 0x00, 0x09, /* nop */ |
| 2229 | 0x00, 0x09, /* nop */ |
| 2230 | 0x00, 0x09, /* nop */ |
| 2231 | 0, 0, 0, 0, /* 1: replaced with address of .got.plt + 8. */ |
| 2232 | 0, 0, 0, 0, /* 2: replaced with address of .got.plt + 4. */ |
| 2233 | }; |
| 2234 | |
| 2235 | static const bfd_byte elf_sh_plt0_entry_le[PLT_ENTRY_SIZE] = |
| 2236 | { |
| 2237 | 0x04, 0xd0, /* mov.l 1f,r0 */ |
| 2238 | 0x05, 0xd2, /* mov.l 2f,r2 */ |
| 2239 | 0x02, 0x60, /* mov.l @r0,r0 */ |
| 2240 | 0x22, 0x62, /* mov.l @r2,r2 */ |
| 2241 | 0x2b, 0x40, /* jmp @r0 */ |
| 2242 | 0x00, 0xe0, /* mov #0,r0 */ |
| 2243 | 0x09, 0x00, /* nop */ |
| 2244 | 0x09, 0x00, /* nop */ |
| 2245 | 0x09, 0x00, /* nop */ |
| 2246 | 0x09, 0x00, /* nop */ |
| 2247 | 0, 0, 0, 0, /* 1: replaced with address of .got.plt + 8. */ |
| 2248 | 0, 0, 0, 0, /* 2: replaced with address of .got.plt + 4. */ |
| 2249 | }; |
| 2250 | |
| 2251 | /* Sebsequent entries in an absolute procedure linkage table look like |
| 2252 | this. */ |
| 2253 | |
| 2254 | static const bfd_byte elf_sh_plt_entry_be[PLT_ENTRY_SIZE] = |
| 2255 | { |
| 2256 | 0xd0, 0x04, /* mov.l 1f,r0 */ |
| 2257 | 0x60, 0x02, /* mov.l @r0,r0 */ |
| 2258 | 0xd2, 0x02, /* mov.l 0f,r2 */ |
| 2259 | 0x40, 0x2b, /* jmp @r0 */ |
| 2260 | 0x60, 0x23, /* mov r2,r0 */ |
| 2261 | 0xd1, 0x03, /* mov.l 2f,r1 */ |
| 2262 | 0x40, 0x2b, /* jmp @r0 */ |
| 2263 | 0x00, 0x09, /* nop */ |
| 2264 | 0, 0, 0, 0, /* 0: replaced with address of .PLT0. */ |
| 2265 | 0, 0, 0, 0, /* 1: replaced with address of this symbol in .got. */ |
| 2266 | 0, 0, 0, 0, /* 2: replaced with offset into relocation table. */ |
| 2267 | }; |
| 2268 | |
| 2269 | static const bfd_byte elf_sh_plt_entry_le[PLT_ENTRY_SIZE] = |
| 2270 | { |
| 2271 | 0x04, 0xd0, /* mov.l 1f,r0 */ |
| 2272 | 0x02, 0x60, /* mov.l @r0,r0 */ |
| 2273 | 0x02, 0xd2, /* mov.l 0f,r2 */ |
| 2274 | 0x2b, 0x40, /* jmp @r0 */ |
| 2275 | 0x23, 0x60, /* mov r2,r0 */ |
| 2276 | 0x03, 0xd1, /* mov.l 2f,r1 */ |
| 2277 | 0x2b, 0x40, /* jmp @r0 */ |
| 2278 | 0x09, 0x00, /* nop */ |
| 2279 | 0, 0, 0, 0, /* 0: replaced with address of .PLT. */ |
| 2280 | 0, 0, 0, 0, /* 1: replaced with address of this symbol in .got. */ |
| 2281 | 0, 0, 0, 0, /* 2: replaced with offset into relocation table. */ |
| 2282 | }; |
| 2283 | |
| 2284 | /* Entries in a PIC procedure linkage table look like this. */ |
| 2285 | |
| 2286 | static const bfd_byte elf_sh_pic_plt_entry_be[PLT_ENTRY_SIZE] = |
| 2287 | { |
| 2288 | 0xd0, 0x04, /* mov.l 1f,r0 */ |
| 2289 | 0x00, 0xce, /* mov.l @(r0,r12),r0 */ |
| 2290 | 0x40, 0x2b, /* jmp @r0 */ |
| 2291 | 0x00, 0x09, /* nop */ |
| 2292 | 0x50, 0xc2, /* 0: mov.l @(8,r12),r0 */ |
| 2293 | 0x52, 0xc1, /* 1: mov.l @(4,r12),r2 */ |
| 2294 | 0xd1, 0x02, /* mov.l 2f,r1 */ |
| 2295 | 0x40, 0x2b, /* jmp @r0 */ |
| 2296 | 0xe0, 0x00, /* mov #0,r0 ! shows the type of PLT. */ |
| 2297 | 0x00, 0x09, /* nop */ |
| 2298 | 0, 0, 0, 0, /* 1: replaced with address of this symbol in .got. */ |
| 2299 | 0, 0, 0, 0 /* 2: replaced with offset into relocation table. */ |
| 2300 | }; |
| 2301 | |
| 2302 | static const bfd_byte elf_sh_pic_plt_entry_le[PLT_ENTRY_SIZE] = |
| 2303 | { |
| 2304 | 0x04, 0xd0, /* mov.l 1f,r0 */ |
| 2305 | 0xce, 0x00, /* mov.l @(r0,r12),r0 */ |
| 2306 | 0x2b, 0x40, /* jmp @r0 */ |
| 2307 | 0x09, 0x00, /* nop */ |
| 2308 | 0xc2, 0x50, /* 0: mov.l @(8,r12),r0 */ |
| 2309 | 0xc1, 0x52, /* 1: mov.l @(4,r12),r2 */ |
| 2310 | 0x02, 0xd1, /* mov.l 2f,r1 */ |
| 2311 | 0x2b, 0x40, /* jmp @r0 */ |
| 2312 | 0x00, 0xe0, /* mov #0,r0 ! shows the type of PLT. */ |
| 2313 | 0x09, 0x00, /* nop */ |
| 2314 | 0, 0, 0, 0, /* 1: replaced with address of this symbol in .got. */ |
| 2315 | 0, 0, 0, 0 /* 2: replaced with offset into relocation table. */ |
| 2316 | }; |
| 2317 | #endif /* old style PLT entries. */ |
| 2318 | |
| 2319 | static const bfd_byte *elf_sh_plt0_entry; |
| 2320 | static const bfd_byte *elf_sh_plt_entry; |
| 2321 | static const bfd_byte *elf_sh_pic_plt_entry; |
| 2322 | |
| 2323 | /* Return size of a PLT entry. */ |
| 2324 | #define elf_sh_sizeof_plt(info) PLT_ENTRY_SIZE |
| 2325 | |
| 2326 | /* Return offset of the PLT0 address in an absolute PLT entry. */ |
| 2327 | #define elf_sh_plt_plt0_offset(info) 16 |
| 2328 | |
| 2329 | /* Return offset of the linker in PLT0 entry. */ |
| 2330 | #define elf_sh_plt0_linker_offset(info) 20 |
| 2331 | |
| 2332 | /* Return offset of the GOT id in PLT0 entry. */ |
| 2333 | #define elf_sh_plt0_gotid_offset(info) 24 |
| 2334 | |
| 2335 | /* Return offset of the tempoline in PLT entry */ |
| 2336 | #define elf_sh_plt_temp_offset(info) 8 |
| 2337 | |
| 2338 | /* Return offset of the symbol in PLT entry. */ |
| 2339 | #define elf_sh_plt_symbol_offset(info) 20 |
| 2340 | |
| 2341 | /* Return offset of the relocation in PLT entry. */ |
| 2342 | #define elf_sh_plt_reloc_offset(info) 24 |
| 2343 | |
| 2344 | /* The sh linker needs to keep track of the number of relocs that it |
| 2345 | decides to copy in check_relocs for each symbol. This is so that |
| 2346 | it can discard PC relative relocs if it doesn't need them when |
| 2347 | linking with -Bsymbolic. We store the information in a field |
| 2348 | extending the regular ELF linker hash table. */ |
| 2349 | |
| 2350 | /* This structure keeps track of the number of PC relative relocs we |
| 2351 | have copied for a given symbol. */ |
| 2352 | |
| 2353 | struct elf_sh_pcrel_relocs_copied |
| 2354 | { |
| 2355 | /* Next section. */ |
| 2356 | struct elf_sh_pcrel_relocs_copied *next; |
| 2357 | /* A section in dynobj. */ |
| 2358 | asection *section; |
| 2359 | /* Number of relocs copied in this section. */ |
| 2360 | bfd_size_type count; |
| 2361 | }; |
| 2362 | |
| 2363 | /* sh ELF linker hash entry. */ |
| 2364 | |
| 2365 | struct elf_sh_link_hash_entry |
| 2366 | { |
| 2367 | struct elf_link_hash_entry root; |
| 2368 | |
| 2369 | /* Number of PC relative relocs copied for this symbol. */ |
| 2370 | struct elf_sh_pcrel_relocs_copied *pcrel_relocs_copied; |
| 2371 | }; |
| 2372 | |
| 2373 | /* sh ELF linker hash table. */ |
| 2374 | |
| 2375 | struct elf_sh_link_hash_table |
| 2376 | { |
| 2377 | struct elf_link_hash_table root; |
| 2378 | }; |
| 2379 | |
| 2380 | /* Declare this now that the above structures are defined. */ |
| 2381 | |
| 2382 | static boolean sh_elf_discard_copies |
| 2383 | PARAMS ((struct elf_sh_link_hash_entry *, PTR)); |
| 2384 | |
| 2385 | /* Traverse an sh ELF linker hash table. */ |
| 2386 | |
| 2387 | #define sh_elf_link_hash_traverse(table, func, info) \ |
| 2388 | (elf_link_hash_traverse \ |
| 2389 | (&(table)->root, \ |
| 2390 | (boolean (*) PARAMS ((struct elf_link_hash_entry *, PTR))) (func), \ |
| 2391 | (info))) |
| 2392 | |
| 2393 | /* Get the sh ELF linker hash table from a link_info structure. */ |
| 2394 | |
| 2395 | #define sh_elf_hash_table(p) \ |
| 2396 | ((struct elf_sh_link_hash_table *) ((p)->hash)) |
| 2397 | |
| 2398 | /* Create an entry in an sh ELF linker hash table. */ |
| 2399 | |
| 2400 | static struct bfd_hash_entry * |
| 2401 | sh_elf_link_hash_newfunc (entry, table, string) |
| 2402 | struct bfd_hash_entry *entry; |
| 2403 | struct bfd_hash_table *table; |
| 2404 | const char *string; |
| 2405 | { |
| 2406 | struct elf_sh_link_hash_entry *ret = |
| 2407 | (struct elf_sh_link_hash_entry *) entry; |
| 2408 | |
| 2409 | /* Allocate the structure if it has not already been allocated by a |
| 2410 | subclass. */ |
| 2411 | if (ret == (struct elf_sh_link_hash_entry *) NULL) |
| 2412 | ret = ((struct elf_sh_link_hash_entry *) |
| 2413 | bfd_hash_allocate (table, |
| 2414 | sizeof (struct elf_sh_link_hash_entry))); |
| 2415 | if (ret == (struct elf_sh_link_hash_entry *) NULL) |
| 2416 | return (struct bfd_hash_entry *) ret; |
| 2417 | |
| 2418 | /* Call the allocation method of the superclass. */ |
| 2419 | ret = ((struct elf_sh_link_hash_entry *) |
| 2420 | _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret, |
| 2421 | table, string)); |
| 2422 | if (ret != (struct elf_sh_link_hash_entry *) NULL) |
| 2423 | { |
| 2424 | ret->pcrel_relocs_copied = NULL; |
| 2425 | } |
| 2426 | |
| 2427 | return (struct bfd_hash_entry *) ret; |
| 2428 | } |
| 2429 | |
| 2430 | /* Create an sh ELF linker hash table. */ |
| 2431 | |
| 2432 | static struct bfd_link_hash_table * |
| 2433 | sh_elf_link_hash_table_create (abfd) |
| 2434 | bfd *abfd; |
| 2435 | { |
| 2436 | struct elf_sh_link_hash_table *ret; |
| 2437 | bfd_size_type amt = sizeof (struct elf_sh_link_hash_table); |
| 2438 | |
| 2439 | ret = (struct elf_sh_link_hash_table *) bfd_alloc (abfd, amt); |
| 2440 | if (ret == (struct elf_sh_link_hash_table *) NULL) |
| 2441 | return NULL; |
| 2442 | |
| 2443 | if (! _bfd_elf_link_hash_table_init (&ret->root, abfd, |
| 2444 | sh_elf_link_hash_newfunc)) |
| 2445 | { |
| 2446 | bfd_release (abfd, ret); |
| 2447 | return NULL; |
| 2448 | } |
| 2449 | |
| 2450 | return &ret->root.root; |
| 2451 | } |
| 2452 | |
| 2453 | /* Create dynamic sections when linking against a dynamic object. */ |
| 2454 | |
| 2455 | static boolean |
| 2456 | sh_elf_create_dynamic_sections (abfd, info) |
| 2457 | bfd *abfd; |
| 2458 | struct bfd_link_info *info; |
| 2459 | { |
| 2460 | flagword flags, pltflags; |
| 2461 | register asection *s; |
| 2462 | struct elf_backend_data *bed = get_elf_backend_data (abfd); |
| 2463 | int ptralign = 0; |
| 2464 | |
| 2465 | switch (bed->s->arch_size) |
| 2466 | { |
| 2467 | case 32: |
| 2468 | ptralign = 2; |
| 2469 | break; |
| 2470 | |
| 2471 | case 64: |
| 2472 | ptralign = 3; |
| 2473 | break; |
| 2474 | |
| 2475 | default: |
| 2476 | bfd_set_error (bfd_error_bad_value); |
| 2477 | return false; |
| 2478 | } |
| 2479 | |
| 2480 | /* We need to create .plt, .rel[a].plt, .got, .got.plt, .dynbss, and |
| 2481 | .rel[a].bss sections. */ |
| 2482 | |
| 2483 | flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY |
| 2484 | | SEC_LINKER_CREATED); |
| 2485 | |
| 2486 | pltflags = flags; |
| 2487 | pltflags |= SEC_CODE; |
| 2488 | if (bed->plt_not_loaded) |
| 2489 | pltflags &= ~ (SEC_LOAD | SEC_HAS_CONTENTS); |
| 2490 | if (bed->plt_readonly) |
| 2491 | pltflags |= SEC_READONLY; |
| 2492 | |
| 2493 | s = bfd_make_section (abfd, ".plt"); |
| 2494 | if (s == NULL |
| 2495 | || ! bfd_set_section_flags (abfd, s, pltflags) |
| 2496 | || ! bfd_set_section_alignment (abfd, s, bed->plt_alignment)) |
| 2497 | return false; |
| 2498 | |
| 2499 | if (bed->want_plt_sym) |
| 2500 | { |
| 2501 | /* Define the symbol _PROCEDURE_LINKAGE_TABLE_ at the start of the |
| 2502 | .plt section. */ |
| 2503 | struct elf_link_hash_entry *h = NULL; |
| 2504 | if (! (_bfd_generic_link_add_one_symbol |
| 2505 | (info, abfd, "_PROCEDURE_LINKAGE_TABLE_", BSF_GLOBAL, s, |
| 2506 | (bfd_vma) 0, (const char *) NULL, false, |
| 2507 | get_elf_backend_data (abfd)->collect, |
| 2508 | (struct bfd_link_hash_entry **) &h))) |
| 2509 | return false; |
| 2510 | h->elf_link_hash_flags |= ELF_LINK_HASH_DEF_REGULAR; |
| 2511 | h->type = STT_OBJECT; |
| 2512 | |
| 2513 | if (info->shared |
| 2514 | && ! _bfd_elf_link_record_dynamic_symbol (info, h)) |
| 2515 | return false; |
| 2516 | } |
| 2517 | |
| 2518 | s = bfd_make_section (abfd, |
| 2519 | bed->default_use_rela_p ? ".rela.plt" : ".rel.plt"); |
| 2520 | if (s == NULL |
| 2521 | || ! bfd_set_section_flags (abfd, s, flags | SEC_READONLY) |
| 2522 | || ! bfd_set_section_alignment (abfd, s, ptralign)) |
| 2523 | return false; |
| 2524 | |
| 2525 | if (! _bfd_elf_create_got_section (abfd, info)) |
| 2526 | return false; |
| 2527 | |
| 2528 | { |
| 2529 | const char *secname; |
| 2530 | char *relname; |
| 2531 | flagword secflags; |
| 2532 | asection *sec; |
| 2533 | |
| 2534 | for (sec = abfd->sections; sec; sec = sec->next) |
| 2535 | { |
| 2536 | secflags = bfd_get_section_flags (abfd, sec); |
| 2537 | if ((secflags & (SEC_DATA | SEC_LINKER_CREATED)) |
| 2538 | || ((secflags & SEC_HAS_CONTENTS) != SEC_HAS_CONTENTS)) |
| 2539 | continue; |
| 2540 | secname = bfd_get_section_name (abfd, sec); |
| 2541 | relname = (char *) bfd_malloc ((bfd_size_type) strlen (secname) + 6); |
| 2542 | strcpy (relname, ".rela"); |
| 2543 | strcat (relname, secname); |
| 2544 | s = bfd_make_section (abfd, relname); |
| 2545 | if (s == NULL |
| 2546 | || ! bfd_set_section_flags (abfd, s, flags | SEC_READONLY) |
| 2547 | || ! bfd_set_section_alignment (abfd, s, ptralign)) |
| 2548 | return false; |
| 2549 | } |
| 2550 | } |
| 2551 | |
| 2552 | if (bed->want_dynbss) |
| 2553 | { |
| 2554 | /* The .dynbss section is a place to put symbols which are defined |
| 2555 | by dynamic objects, are referenced by regular objects, and are |
| 2556 | not functions. We must allocate space for them in the process |
| 2557 | image and use a R_*_COPY reloc to tell the dynamic linker to |
| 2558 | initialize them at run time. The linker script puts the .dynbss |
| 2559 | section into the .bss section of the final image. */ |
| 2560 | s = bfd_make_section (abfd, ".dynbss"); |
| 2561 | if (s == NULL |
| 2562 | || ! bfd_set_section_flags (abfd, s, SEC_ALLOC)) |
| 2563 | return false; |
| 2564 | |
| 2565 | /* The .rel[a].bss section holds copy relocs. This section is not |
| 2566 | normally needed. We need to create it here, though, so that the |
| 2567 | linker will map it to an output section. We can't just create it |
| 2568 | only if we need it, because we will not know whether we need it |
| 2569 | until we have seen all the input files, and the first time the |
| 2570 | main linker code calls BFD after examining all the input files |
| 2571 | (size_dynamic_sections) the input sections have already been |
| 2572 | mapped to the output sections. If the section turns out not to |
| 2573 | be needed, we can discard it later. We will never need this |
| 2574 | section when generating a shared object, since they do not use |
| 2575 | copy relocs. */ |
| 2576 | if (! info->shared) |
| 2577 | { |
| 2578 | s = bfd_make_section (abfd, |
| 2579 | (bed->default_use_rela_p |
| 2580 | ? ".rela.bss" : ".rel.bss")); |
| 2581 | if (s == NULL |
| 2582 | || ! bfd_set_section_flags (abfd, s, flags | SEC_READONLY) |
| 2583 | || ! bfd_set_section_alignment (abfd, s, ptralign)) |
| 2584 | return false; |
| 2585 | } |
| 2586 | } |
| 2587 | |
| 2588 | return true; |
| 2589 | } |
| 2590 | \f |
| 2591 | /* Adjust a symbol defined by a dynamic object and referenced by a |
| 2592 | regular object. The current definition is in some section of the |
| 2593 | dynamic object, but we're not including those sections. We have to |
| 2594 | change the definition to something the rest of the link can |
| 2595 | understand. */ |
| 2596 | |
| 2597 | static boolean |
| 2598 | sh_elf_adjust_dynamic_symbol (info, h) |
| 2599 | struct bfd_link_info *info; |
| 2600 | struct elf_link_hash_entry *h; |
| 2601 | { |
| 2602 | bfd *dynobj; |
| 2603 | asection *s; |
| 2604 | unsigned int power_of_two; |
| 2605 | |
| 2606 | dynobj = elf_hash_table (info)->dynobj; |
| 2607 | |
| 2608 | /* Make sure we know what is going on here. */ |
| 2609 | BFD_ASSERT (dynobj != NULL |
| 2610 | && ((h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT) |
| 2611 | || h->weakdef != NULL |
| 2612 | || ((h->elf_link_hash_flags |
| 2613 | & ELF_LINK_HASH_DEF_DYNAMIC) != 0 |
| 2614 | && (h->elf_link_hash_flags |
| 2615 | & ELF_LINK_HASH_REF_REGULAR) != 0 |
| 2616 | && (h->elf_link_hash_flags |
| 2617 | & ELF_LINK_HASH_DEF_REGULAR) == 0))); |
| 2618 | |
| 2619 | /* If this is a function, put it in the procedure linkage table. We |
| 2620 | will fill in the contents of the procedure linkage table later, |
| 2621 | when we know the address of the .got section. */ |
| 2622 | if (h->type == STT_FUNC |
| 2623 | || (h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT) != 0) |
| 2624 | { |
| 2625 | if (! info->shared |
| 2626 | && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) == 0 |
| 2627 | && (h->elf_link_hash_flags & ELF_LINK_HASH_REF_DYNAMIC) == 0) |
| 2628 | { |
| 2629 | /* This case can occur if we saw a PLT reloc in an input |
| 2630 | file, but the symbol was never referred to by a dynamic |
| 2631 | object. In such a case, we don't actually need to build |
| 2632 | a procedure linkage table, and we can just do a REL32 |
| 2633 | reloc instead. */ |
| 2634 | BFD_ASSERT ((h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT) != 0); |
| 2635 | return true; |
| 2636 | } |
| 2637 | |
| 2638 | /* Make sure this symbol is output as a dynamic symbol. */ |
| 2639 | if (h->dynindx == -1) |
| 2640 | { |
| 2641 | if (! bfd_elf32_link_record_dynamic_symbol (info, h)) |
| 2642 | return false; |
| 2643 | } |
| 2644 | |
| 2645 | s = bfd_get_section_by_name (dynobj, ".plt"); |
| 2646 | BFD_ASSERT (s != NULL); |
| 2647 | |
| 2648 | /* If this is the first .plt entry, make room for the special |
| 2649 | first entry. */ |
| 2650 | if (s->_raw_size == 0) |
| 2651 | s->_raw_size += PLT_ENTRY_SIZE; |
| 2652 | |
| 2653 | /* If this symbol is not defined in a regular file, and we are |
| 2654 | not generating a shared library, then set the symbol to this |
| 2655 | location in the .plt. This is required to make function |
| 2656 | pointers compare as equal between the normal executable and |
| 2657 | the shared library. */ |
| 2658 | if (! info->shared |
| 2659 | && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0) |
| 2660 | { |
| 2661 | h->root.u.def.section = s; |
| 2662 | h->root.u.def.value = s->_raw_size; |
| 2663 | } |
| 2664 | |
| 2665 | h->plt.offset = s->_raw_size; |
| 2666 | |
| 2667 | /* Make room for this entry. */ |
| 2668 | s->_raw_size += elf_sh_sizeof_plt (info); |
| 2669 | |
| 2670 | /* We also need to make an entry in the .got.plt section, which |
| 2671 | will be placed in the .got section by the linker script. */ |
| 2672 | |
| 2673 | s = bfd_get_section_by_name (dynobj, ".got.plt"); |
| 2674 | BFD_ASSERT (s != NULL); |
| 2675 | s->_raw_size += 4; |
| 2676 | |
| 2677 | /* We also need to make an entry in the .rela.plt section. */ |
| 2678 | |
| 2679 | s = bfd_get_section_by_name (dynobj, ".rela.plt"); |
| 2680 | BFD_ASSERT (s != NULL); |
| 2681 | s->_raw_size += sizeof (Elf32_External_Rela); |
| 2682 | |
| 2683 | return true; |
| 2684 | } |
| 2685 | |
| 2686 | /* If this is a weak symbol, and there is a real definition, the |
| 2687 | processor independent code will have arranged for us to see the |
| 2688 | real definition first, and we can just use the same value. */ |
| 2689 | if (h->weakdef != NULL) |
| 2690 | { |
| 2691 | BFD_ASSERT (h->weakdef->root.type == bfd_link_hash_defined |
| 2692 | || h->weakdef->root.type == bfd_link_hash_defweak); |
| 2693 | h->root.u.def.section = h->weakdef->root.u.def.section; |
| 2694 | h->root.u.def.value = h->weakdef->root.u.def.value; |
| 2695 | return true; |
| 2696 | } |
| 2697 | |
| 2698 | /* This is a reference to a symbol defined by a dynamic object which |
| 2699 | is not a function. */ |
| 2700 | |
| 2701 | /* If we are creating a shared library, we must presume that the |
| 2702 | only references to the symbol are via the global offset table. |
| 2703 | For such cases we need not do anything here; the relocations will |
| 2704 | be handled correctly by relocate_section. */ |
| 2705 | if (info->shared) |
| 2706 | return true; |
| 2707 | |
| 2708 | /* If there are no references to this symbol that do not use the |
| 2709 | GOT, we don't need to generate a copy reloc. */ |
| 2710 | if ((h->elf_link_hash_flags & ELF_LINK_NON_GOT_REF) == 0) |
| 2711 | return true; |
| 2712 | |
| 2713 | /* We must allocate the symbol in our .dynbss section, which will |
| 2714 | become part of the .bss section of the executable. There will be |
| 2715 | an entry for this symbol in the .dynsym section. The dynamic |
| 2716 | object will contain position independent code, so all references |
| 2717 | from the dynamic object to this symbol will go through the global |
| 2718 | offset table. The dynamic linker will use the .dynsym entry to |
| 2719 | determine the address it must put in the global offset table, so |
| 2720 | both the dynamic object and the regular object will refer to the |
| 2721 | same memory location for the variable. */ |
| 2722 | |
| 2723 | s = bfd_get_section_by_name (dynobj, ".dynbss"); |
| 2724 | BFD_ASSERT (s != NULL); |
| 2725 | |
| 2726 | /* We must generate a R_SH_COPY reloc to tell the dynamic linker to |
| 2727 | copy the initial value out of the dynamic object and into the |
| 2728 | runtime process image. We need to remember the offset into the |
| 2729 | .rela.bss section we are going to use. */ |
| 2730 | if ((h->root.u.def.section->flags & SEC_ALLOC) != 0) |
| 2731 | { |
| 2732 | asection *srel; |
| 2733 | |
| 2734 | srel = bfd_get_section_by_name (dynobj, ".rela.bss"); |
| 2735 | BFD_ASSERT (srel != NULL); |
| 2736 | srel->_raw_size += sizeof (Elf32_External_Rela); |
| 2737 | h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_COPY; |
| 2738 | } |
| 2739 | |
| 2740 | /* We need to figure out the alignment required for this symbol. I |
| 2741 | have no idea how ELF linkers handle this. */ |
| 2742 | power_of_two = bfd_log2 (h->size); |
| 2743 | if (power_of_two > 3) |
| 2744 | power_of_two = 3; |
| 2745 | |
| 2746 | /* Apply the required alignment. */ |
| 2747 | s->_raw_size = BFD_ALIGN (s->_raw_size, |
| 2748 | (bfd_size_type) (1 << power_of_two)); |
| 2749 | if (power_of_two > bfd_get_section_alignment (dynobj, s)) |
| 2750 | { |
| 2751 | if (! bfd_set_section_alignment (dynobj, s, power_of_two)) |
| 2752 | return false; |
| 2753 | } |
| 2754 | |
| 2755 | /* Define the symbol as being at this point in the section. */ |
| 2756 | h->root.u.def.section = s; |
| 2757 | h->root.u.def.value = s->_raw_size; |
| 2758 | |
| 2759 | /* Increment the section size to make room for the symbol. */ |
| 2760 | s->_raw_size += h->size; |
| 2761 | |
| 2762 | return true; |
| 2763 | } |
| 2764 | |
| 2765 | /* Set the sizes of the dynamic sections. */ |
| 2766 | |
| 2767 | static boolean |
| 2768 | sh_elf_size_dynamic_sections (output_bfd, info) |
| 2769 | bfd *output_bfd ATTRIBUTE_UNUSED; |
| 2770 | struct bfd_link_info *info; |
| 2771 | { |
| 2772 | bfd *dynobj; |
| 2773 | asection *s; |
| 2774 | boolean plt; |
| 2775 | boolean relocs; |
| 2776 | |
| 2777 | dynobj = elf_hash_table (info)->dynobj; |
| 2778 | BFD_ASSERT (dynobj != NULL); |
| 2779 | |
| 2780 | if (elf_hash_table (info)->dynamic_sections_created) |
| 2781 | { |
| 2782 | /* Set the contents of the .interp section to the interpreter. */ |
| 2783 | if (! info->shared) |
| 2784 | { |
| 2785 | s = bfd_get_section_by_name (dynobj, ".interp"); |
| 2786 | BFD_ASSERT (s != NULL); |
| 2787 | s->_raw_size = sizeof ELF_DYNAMIC_INTERPRETER; |
| 2788 | s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER; |
| 2789 | } |
| 2790 | } |
| 2791 | else |
| 2792 | { |
| 2793 | /* We may have created entries in the .rela.got section. |
| 2794 | However, if we are not creating the dynamic sections, we will |
| 2795 | not actually use these entries. Reset the size of .rela.got, |
| 2796 | which will cause it to get stripped from the output file |
| 2797 | below. */ |
| 2798 | s = bfd_get_section_by_name (dynobj, ".rela.got"); |
| 2799 | if (s != NULL) |
| 2800 | s->_raw_size = 0; |
| 2801 | } |
| 2802 | |
| 2803 | /* If this is a -Bsymbolic shared link, then we need to discard all |
| 2804 | PC relative relocs against symbols defined in a regular object. |
| 2805 | We allocated space for them in the check_relocs routine, but we |
| 2806 | will not fill them in in the relocate_section routine. */ |
| 2807 | if (info->shared && info->symbolic) |
| 2808 | sh_elf_link_hash_traverse (sh_elf_hash_table (info), |
| 2809 | sh_elf_discard_copies, |
| 2810 | (PTR) NULL); |
| 2811 | |
| 2812 | /* The check_relocs and adjust_dynamic_symbol entry points have |
| 2813 | determined the sizes of the various dynamic sections. Allocate |
| 2814 | memory for them. */ |
| 2815 | plt = false; |
| 2816 | relocs = false; |
| 2817 | for (s = dynobj->sections; s != NULL; s = s->next) |
| 2818 | { |
| 2819 | const char *name; |
| 2820 | boolean strip; |
| 2821 | |
| 2822 | if ((s->flags & SEC_LINKER_CREATED) == 0) |
| 2823 | continue; |
| 2824 | |
| 2825 | /* It's OK to base decisions on the section name, because none |
| 2826 | of the dynobj section names depend upon the input files. */ |
| 2827 | name = bfd_get_section_name (dynobj, s); |
| 2828 | |
| 2829 | strip = false; |
| 2830 | |
| 2831 | if (strcmp (name, ".plt") == 0) |
| 2832 | { |
| 2833 | if (s->_raw_size == 0) |
| 2834 | { |
| 2835 | /* Strip this section if we don't need it; see the |
| 2836 | comment below. */ |
| 2837 | strip = true; |
| 2838 | } |
| 2839 | else |
| 2840 | { |
| 2841 | /* Remember whether there is a PLT. */ |
| 2842 | plt = true; |
| 2843 | } |
| 2844 | } |
| 2845 | else if (strncmp (name, ".rela", 5) == 0) |
| 2846 | { |
| 2847 | if (s->_raw_size == 0) |
| 2848 | { |
| 2849 | /* If we don't need this section, strip it from the |
| 2850 | output file. This is mostly to handle .rela.bss and |
| 2851 | .rela.plt. We must create both sections in |
| 2852 | create_dynamic_sections, because they must be created |
| 2853 | before the linker maps input sections to output |
| 2854 | sections. The linker does that before |
| 2855 | adjust_dynamic_symbol is called, and it is that |
| 2856 | function which decides whether anything needs to go |
| 2857 | into these sections. */ |
| 2858 | strip = true; |
| 2859 | } |
| 2860 | else |
| 2861 | { |
| 2862 | /* Remember whether there are any reloc sections other |
| 2863 | than .rela.plt. */ |
| 2864 | if (strcmp (name, ".rela.plt") != 0) |
| 2865 | relocs = true; |
| 2866 | |
| 2867 | /* We use the reloc_count field as a counter if we need |
| 2868 | to copy relocs into the output file. */ |
| 2869 | s->reloc_count = 0; |
| 2870 | } |
| 2871 | } |
| 2872 | else if (strncmp (name, ".got", 4) != 0) |
| 2873 | { |
| 2874 | /* It's not one of our sections, so don't allocate space. */ |
| 2875 | continue; |
| 2876 | } |
| 2877 | |
| 2878 | if (strip) |
| 2879 | { |
| 2880 | _bfd_strip_section_from_output (info, s); |
| 2881 | continue; |
| 2882 | } |
| 2883 | |
| 2884 | /* Allocate memory for the section contents. */ |
| 2885 | s->contents = (bfd_byte *) bfd_alloc (dynobj, s->_raw_size); |
| 2886 | if (s->contents == NULL && s->_raw_size != 0) |
| 2887 | return false; |
| 2888 | } |
| 2889 | |
| 2890 | if (elf_hash_table (info)->dynamic_sections_created) |
| 2891 | { |
| 2892 | /* Add some entries to the .dynamic section. We fill in the |
| 2893 | values later, in sh_elf_finish_dynamic_sections, but we |
| 2894 | must add the entries now so that we get the correct size for |
| 2895 | the .dynamic section. The DT_DEBUG entry is filled in by the |
| 2896 | dynamic linker and used by the debugger. */ |
| 2897 | #define add_dynamic_entry(TAG, VAL) \ |
| 2898 | bfd_elf32_add_dynamic_entry (info, (bfd_vma) (TAG), (bfd_vma) (VAL)) |
| 2899 | |
| 2900 | if (! info->shared) |
| 2901 | { |
| 2902 | if (!add_dynamic_entry (DT_DEBUG, 0)) |
| 2903 | return false; |
| 2904 | } |
| 2905 | |
| 2906 | if (plt) |
| 2907 | { |
| 2908 | if (!add_dynamic_entry (DT_PLTGOT, 0) |
| 2909 | || !add_dynamic_entry (DT_PLTRELSZ, 0) |
| 2910 | || !add_dynamic_entry (DT_PLTREL, DT_RELA) |
| 2911 | || !add_dynamic_entry (DT_JMPREL, 0)) |
| 2912 | return false; |
| 2913 | } |
| 2914 | |
| 2915 | if (relocs) |
| 2916 | { |
| 2917 | if (!add_dynamic_entry (DT_RELA, 0) |
| 2918 | || !add_dynamic_entry (DT_RELASZ, 0) |
| 2919 | || !add_dynamic_entry (DT_RELAENT, sizeof (Elf32_External_Rela))) |
| 2920 | return false; |
| 2921 | } |
| 2922 | |
| 2923 | if ((info->flags & DF_TEXTREL) != 0) |
| 2924 | { |
| 2925 | if (!add_dynamic_entry (DT_TEXTREL, 0)) |
| 2926 | return false; |
| 2927 | } |
| 2928 | } |
| 2929 | #undef add_dynamic_entry |
| 2930 | |
| 2931 | return true; |
| 2932 | } |
| 2933 | |
| 2934 | /* This function is called via sh_elf_link_hash_traverse if we are |
| 2935 | creating a shared object with -Bsymbolic. It discards the space |
| 2936 | allocated to copy PC relative relocs against symbols which are |
| 2937 | defined in regular objects. We allocated space for them in the |
| 2938 | check_relocs routine, but we won't fill them in in the |
| 2939 | relocate_section routine. */ |
| 2940 | |
| 2941 | static boolean |
| 2942 | sh_elf_discard_copies (h, ignore) |
| 2943 | struct elf_sh_link_hash_entry *h; |
| 2944 | PTR ignore ATTRIBUTE_UNUSED; |
| 2945 | { |
| 2946 | struct elf_sh_pcrel_relocs_copied *s; |
| 2947 | |
| 2948 | /* We only discard relocs for symbols defined in a regular object. */ |
| 2949 | if ((h->root.elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0) |
| 2950 | return true; |
| 2951 | |
| 2952 | for (s = h->pcrel_relocs_copied; s != NULL; s = s->next) |
| 2953 | s->section->_raw_size -= s->count * sizeof (Elf32_External_Rela); |
| 2954 | |
| 2955 | return true; |
| 2956 | } |
| 2957 | \f |
| 2958 | /* Relocate an SH ELF section. */ |
| 2959 | |
| 2960 | static boolean |
| 2961 | sh_elf_relocate_section (output_bfd, info, input_bfd, input_section, |
| 2962 | contents, relocs, local_syms, local_sections) |
| 2963 | bfd *output_bfd ATTRIBUTE_UNUSED; |
| 2964 | struct bfd_link_info *info; |
| 2965 | bfd *input_bfd; |
| 2966 | asection *input_section; |
| 2967 | bfd_byte *contents; |
| 2968 | Elf_Internal_Rela *relocs; |
| 2969 | Elf_Internal_Sym *local_syms; |
| 2970 | asection **local_sections; |
| 2971 | { |
| 2972 | Elf_Internal_Shdr *symtab_hdr; |
| 2973 | struct elf_link_hash_entry **sym_hashes; |
| 2974 | Elf_Internal_Rela *rel, *relend; |
| 2975 | bfd *dynobj; |
| 2976 | bfd_vma *local_got_offsets; |
| 2977 | asection *sgot; |
| 2978 | asection *splt; |
| 2979 | asection *sreloc; |
| 2980 | |
| 2981 | symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; |
| 2982 | sym_hashes = elf_sym_hashes (input_bfd); |
| 2983 | dynobj = elf_hash_table (info)->dynobj; |
| 2984 | local_got_offsets = elf_local_got_offsets (input_bfd); |
| 2985 | |
| 2986 | sgot = NULL; |
| 2987 | splt = NULL; |
| 2988 | sreloc = NULL; |
| 2989 | |
| 2990 | rel = relocs; |
| 2991 | relend = relocs + input_section->reloc_count; |
| 2992 | for (; rel < relend; rel++) |
| 2993 | { |
| 2994 | int r_type; |
| 2995 | reloc_howto_type *howto; |
| 2996 | unsigned long r_symndx; |
| 2997 | Elf_Internal_Sym *sym; |
| 2998 | asection *sec; |
| 2999 | struct elf_link_hash_entry *h; |
| 3000 | bfd_vma relocation; |
| 3001 | bfd_vma addend = (bfd_vma) 0; |
| 3002 | bfd_reloc_status_type r; |
| 3003 | |
| 3004 | r_symndx = ELF32_R_SYM (rel->r_info); |
| 3005 | |
| 3006 | r_type = ELF32_R_TYPE (rel->r_info); |
| 3007 | |
| 3008 | /* Many of the relocs are only used for relaxing, and are |
| 3009 | handled entirely by the relaxation code. */ |
| 3010 | if (r_type > (int) R_SH_LAST_INVALID_RELOC |
| 3011 | && r_type < (int) R_SH_LOOP_START) |
| 3012 | continue; |
| 3013 | if (r_type == (int) R_SH_NONE) |
| 3014 | continue; |
| 3015 | |
| 3016 | if (r_type < 0 |
| 3017 | || r_type >= R_SH_max |
| 3018 | || (r_type >= (int) R_SH_FIRST_INVALID_RELOC |
| 3019 | && r_type <= (int) R_SH_LAST_INVALID_RELOC) |
| 3020 | || (r_type >= (int) R_SH_FIRST_INVALID_RELOC_2 |
| 3021 | && r_type <= (int) R_SH_LAST_INVALID_RELOC_2)) |
| 3022 | { |
| 3023 | bfd_set_error (bfd_error_bad_value); |
| 3024 | return false; |
| 3025 | } |
| 3026 | |
| 3027 | howto = sh_elf_howto_table + r_type; |
| 3028 | |
| 3029 | /* This is a final link. */ |
| 3030 | h = NULL; |
| 3031 | sym = NULL; |
| 3032 | sec = NULL; |
| 3033 | if (r_symndx < symtab_hdr->sh_info) |
| 3034 | { |
| 3035 | sym = local_syms + r_symndx; |
| 3036 | sec = local_sections[r_symndx]; |
| 3037 | relocation = (sec->output_section->vma |
| 3038 | + sec->output_offset |
| 3039 | + sym->st_value); |
| 3040 | |
| 3041 | if (info->relocateable) |
| 3042 | { |
| 3043 | /* This is a relocateable link. We don't have to change |
| 3044 | anything, unless the reloc is against a section symbol, |
| 3045 | in which case we have to adjust according to where the |
| 3046 | section symbol winds up in the output section. */ |
| 3047 | sym = local_syms + r_symndx; |
| 3048 | if (ELF_ST_TYPE (sym->st_info) == STT_SECTION) |
| 3049 | goto final_link_relocate; |
| 3050 | |
| 3051 | continue; |
| 3052 | } |
| 3053 | } |
| 3054 | else |
| 3055 | { |
| 3056 | /* Section symbol are never (?) placed in the hash table, so |
| 3057 | we can just ignore hash relocations when creating a |
| 3058 | relocateable object file. */ |
| 3059 | if (info->relocateable) |
| 3060 | continue; |
| 3061 | |
| 3062 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; |
| 3063 | while (h->root.type == bfd_link_hash_indirect |
| 3064 | || h->root.type == bfd_link_hash_warning) |
| 3065 | h = (struct elf_link_hash_entry *) h->root.u.i.link; |
| 3066 | if (h->root.type == bfd_link_hash_defined |
| 3067 | || h->root.type == bfd_link_hash_defweak) |
| 3068 | { |
| 3069 | sec = h->root.u.def.section; |
| 3070 | /* In these cases, we don't need the relocation value. |
| 3071 | We check specially because in some obscure cases |
| 3072 | sec->output_section will be NULL. */ |
| 3073 | if (r_type == R_SH_GOTPC |
| 3074 | || (r_type == R_SH_PLT32 |
| 3075 | && h->plt.offset != (bfd_vma) -1) |
| 3076 | || (r_type == R_SH_GOT32 |
| 3077 | && elf_hash_table (info)->dynamic_sections_created |
| 3078 | && (! info->shared |
| 3079 | || (! info->symbolic && h->dynindx != -1) |
| 3080 | || (h->elf_link_hash_flags |
| 3081 | & ELF_LINK_HASH_DEF_REGULAR) == 0)) |
| 3082 | /* The cases above are those in which relocation is |
| 3083 | overwritten in the switch block below. The cases |
| 3084 | below are those in which we must defer relocation |
| 3085 | to run-time, because we can't resolve absolute |
| 3086 | addresses when creating a shared library. */ |
| 3087 | || (info->shared |
| 3088 | && ((! info->symbolic && h->dynindx != -1) |
| 3089 | || (h->elf_link_hash_flags |
| 3090 | & ELF_LINK_HASH_DEF_REGULAR) == 0) |
| 3091 | && ((r_type == R_SH_DIR32 |
| 3092 | && !(ELF_ST_VISIBILITY (h->other) == STV_INTERNAL |
| 3093 | || ELF_ST_VISIBILITY (h->other) == STV_HIDDEN)) |
| 3094 | || r_type == R_SH_REL32) |
| 3095 | && ((input_section->flags & SEC_ALLOC) != 0 |
| 3096 | /* DWARF will emit R_SH_DIR32 relocations in its |
| 3097 | sections against symbols defined externally |
| 3098 | in shared libraries. We can't do anything |
| 3099 | with them here. */ |
| 3100 | || (input_section->flags & SEC_DEBUGGING) != 0))) |
| 3101 | relocation = 0; |
| 3102 | else if (sec->output_section == NULL) |
| 3103 | { |
| 3104 | (*_bfd_error_handler) |
| 3105 | (_("%s: warning: unresolvable relocation against symbol `%s' from %s section"), |
| 3106 | bfd_get_filename (input_bfd), h->root.root.string, |
| 3107 | bfd_get_section_name (input_bfd, input_section)); |
| 3108 | relocation = 0; |
| 3109 | } |
| 3110 | else |
| 3111 | relocation = (h->root.u.def.value |
| 3112 | + sec->output_section->vma |
| 3113 | + sec->output_offset); |
| 3114 | } |
| 3115 | else if (h->root.type == bfd_link_hash_undefweak) |
| 3116 | relocation = 0; |
| 3117 | else if (info->shared && !info->symbolic && !info->no_undefined) |
| 3118 | relocation = 0; |
| 3119 | else |
| 3120 | { |
| 3121 | if (! ((*info->callbacks->undefined_symbol) |
| 3122 | (info, h->root.root.string, input_bfd, |
| 3123 | input_section, rel->r_offset, true))) |
| 3124 | return false; |
| 3125 | relocation = 0; |
| 3126 | } |
| 3127 | } |
| 3128 | |
| 3129 | switch ((int) r_type) |
| 3130 | { |
| 3131 | final_link_relocate: |
| 3132 | /* COFF relocs don't use the addend. The addend is used for |
| 3133 | R_SH_DIR32 to be compatible with other compilers. */ |
| 3134 | r = _bfd_final_link_relocate (howto, input_bfd, input_section, |
| 3135 | contents, rel->r_offset, |
| 3136 | relocation, addend); |
| 3137 | break; |
| 3138 | |
| 3139 | case R_SH_IND12W: |
| 3140 | relocation -= 4; |
| 3141 | goto final_link_relocate; |
| 3142 | |
| 3143 | case R_SH_DIR8WPN: |
| 3144 | case R_SH_DIR8WPZ: |
| 3145 | case R_SH_DIR8WPL: |
| 3146 | /* If the reloc is against the start of this section, then |
| 3147 | the assembler has already taken care of it and the reloc |
| 3148 | is here only to assist in relaxing. If the reloc is not |
| 3149 | against the start of this section, then it's against an |
| 3150 | external symbol and we must deal with it ourselves. */ |
| 3151 | if (input_section->output_section->vma + input_section->output_offset |
| 3152 | != relocation) |
| 3153 | { |
| 3154 | int disp = (relocation |
| 3155 | - input_section->output_section->vma |
| 3156 | - input_section->output_offset |
| 3157 | - rel->r_offset); |
| 3158 | int mask = 0; |
| 3159 | switch (r_type) |
| 3160 | { |
| 3161 | case R_SH_DIR8WPN: |
| 3162 | case R_SH_DIR8WPZ: mask = 1; break; |
| 3163 | case R_SH_DIR8WPL: mask = 3; break; |
| 3164 | default: mask = 0; break; |
| 3165 | } |
| 3166 | if (disp & mask) |
| 3167 | { |
| 3168 | ((*_bfd_error_handler) |
| 3169 | (_("%s: 0x%lx: fatal: unaligned branch target for relax-support relocation"), |
| 3170 | bfd_get_filename (input_section->owner), |
| 3171 | (unsigned long) rel->r_offset)); |
| 3172 | bfd_set_error (bfd_error_bad_value); |
| 3173 | return false; |
| 3174 | } |
| 3175 | relocation -= 4; |
| 3176 | goto final_link_relocate; |
| 3177 | } |
| 3178 | r = bfd_reloc_ok; |
| 3179 | break; |
| 3180 | |
| 3181 | default: |
| 3182 | bfd_set_error (bfd_error_bad_value); |
| 3183 | return false; |
| 3184 | |
| 3185 | case R_SH_DIR32: |
| 3186 | case R_SH_REL32: |
| 3187 | if (info->shared |
| 3188 | && (input_section->flags & SEC_ALLOC) != 0 |
| 3189 | && (r_type != R_SH_REL32 |
| 3190 | || (h != NULL |
| 3191 | && h->dynindx != -1 |
| 3192 | && (! info->symbolic |
| 3193 | || (h->elf_link_hash_flags |
| 3194 | & ELF_LINK_HASH_DEF_REGULAR) == 0)))) |
| 3195 | { |
| 3196 | Elf_Internal_Rela outrel; |
| 3197 | boolean skip, relocate; |
| 3198 | |
| 3199 | /* When generating a shared object, these relocations |
| 3200 | are copied into the output file to be resolved at run |
| 3201 | time. */ |
| 3202 | |
| 3203 | if (sreloc == NULL) |
| 3204 | { |
| 3205 | const char *name; |
| 3206 | |
| 3207 | name = (bfd_elf_string_from_elf_section |
| 3208 | (input_bfd, |
| 3209 | elf_elfheader (input_bfd)->e_shstrndx, |
| 3210 | elf_section_data (input_section)->rel_hdr.sh_name)); |
| 3211 | if (name == NULL) |
| 3212 | return false; |
| 3213 | |
| 3214 | BFD_ASSERT (strncmp (name, ".rela", 5) == 0 |
| 3215 | && strcmp (bfd_get_section_name (input_bfd, |
| 3216 | input_section), |
| 3217 | name + 5) == 0); |
| 3218 | |
| 3219 | sreloc = bfd_get_section_by_name (dynobj, name); |
| 3220 | BFD_ASSERT (sreloc != NULL); |
| 3221 | } |
| 3222 | |
| 3223 | skip = false; |
| 3224 | |
| 3225 | if (elf_section_data (input_section)->stab_info == NULL) |
| 3226 | outrel.r_offset = rel->r_offset; |
| 3227 | else |
| 3228 | { |
| 3229 | bfd_vma off; |
| 3230 | |
| 3231 | off = (_bfd_stab_section_offset |
| 3232 | (output_bfd, &elf_hash_table (info)->stab_info, |
| 3233 | input_section, |
| 3234 | &elf_section_data (input_section)->stab_info, |
| 3235 | rel->r_offset)); |
| 3236 | if (off == (bfd_vma) -1) |
| 3237 | skip = true; |
| 3238 | outrel.r_offset = off; |
| 3239 | } |
| 3240 | |
| 3241 | outrel.r_offset += (input_section->output_section->vma |
| 3242 | + input_section->output_offset); |
| 3243 | |
| 3244 | if (skip) |
| 3245 | { |
| 3246 | memset (&outrel, 0, sizeof outrel); |
| 3247 | relocate = false; |
| 3248 | } |
| 3249 | else if (r_type == R_SH_REL32) |
| 3250 | { |
| 3251 | BFD_ASSERT (h != NULL && h->dynindx != -1); |
| 3252 | relocate = false; |
| 3253 | outrel.r_info = ELF32_R_INFO (h->dynindx, R_SH_REL32); |
| 3254 | outrel.r_addend = rel->r_addend; |
| 3255 | } |
| 3256 | else |
| 3257 | { |
| 3258 | /* h->dynindx may be -1 if this symbol was marked to |
| 3259 | become local. */ |
| 3260 | if (h == NULL |
| 3261 | || ((info->symbolic || h->dynindx == -1) |
| 3262 | && (h->elf_link_hash_flags |
| 3263 | & ELF_LINK_HASH_DEF_REGULAR) != 0)) |
| 3264 | { |
| 3265 | relocate = true; |
| 3266 | outrel.r_info = ELF32_R_INFO (0, R_SH_RELATIVE); |
| 3267 | outrel.r_addend = relocation + rel->r_addend; |
| 3268 | } |
| 3269 | else |
| 3270 | { |
| 3271 | BFD_ASSERT (h->dynindx != -1); |
| 3272 | relocate = false; |
| 3273 | outrel.r_info = ELF32_R_INFO (h->dynindx, R_SH_DIR32); |
| 3274 | outrel.r_addend = relocation + rel->r_addend; |
| 3275 | } |
| 3276 | } |
| 3277 | |
| 3278 | bfd_elf32_swap_reloca_out (output_bfd, &outrel, |
| 3279 | (((Elf32_External_Rela *) |
| 3280 | sreloc->contents) |
| 3281 | + sreloc->reloc_count)); |
| 3282 | ++sreloc->reloc_count; |
| 3283 | |
| 3284 | /* If this reloc is against an external symbol, we do |
| 3285 | not want to fiddle with the addend. Otherwise, we |
| 3286 | need to include the symbol value so that it becomes |
| 3287 | an addend for the dynamic reloc. */ |
| 3288 | if (! relocate) |
| 3289 | continue; |
| 3290 | } |
| 3291 | else if (r_type == R_SH_DIR32) |
| 3292 | addend = rel->r_addend; |
| 3293 | goto final_link_relocate; |
| 3294 | |
| 3295 | case R_SH_GOT32: |
| 3296 | /* Relocation is to the entry for this symbol in the global |
| 3297 | offset table. */ |
| 3298 | if (sgot == NULL) |
| 3299 | { |
| 3300 | sgot = bfd_get_section_by_name (dynobj, ".got"); |
| 3301 | BFD_ASSERT (sgot != NULL); |
| 3302 | } |
| 3303 | |
| 3304 | if (h != NULL) |
| 3305 | { |
| 3306 | bfd_vma off; |
| 3307 | |
| 3308 | off = h->got.offset; |
| 3309 | BFD_ASSERT (off != (bfd_vma) -1); |
| 3310 | |
| 3311 | if (! elf_hash_table (info)->dynamic_sections_created |
| 3312 | || (info->shared |
| 3313 | && (info->symbolic || h->dynindx == -1 |
| 3314 | || ELF_ST_VISIBILITY (h->other) == STV_INTERNAL |
| 3315 | || ELF_ST_VISIBILITY (h->other) == STV_HIDDEN) |
| 3316 | && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR))) |
| 3317 | { |
| 3318 | /* This is actually a static link, or it is a |
| 3319 | -Bsymbolic link and the symbol is defined |
| 3320 | locally, or the symbol was forced to be local |
| 3321 | because of a version file. We must initialize |
| 3322 | this entry in the global offset table. Since the |
| 3323 | offset must always be a multiple of 4, we use the |
| 3324 | least significant bit to record whether we have |
| 3325 | initialized it already. |
| 3326 | |
| 3327 | When doing a dynamic link, we create a .rela.got |
| 3328 | relocation entry to initialize the value. This |
| 3329 | is done in the finish_dynamic_symbol routine. */ |
| 3330 | if ((off & 1) != 0) |
| 3331 | off &= ~1; |
| 3332 | else |
| 3333 | { |
| 3334 | bfd_put_32 (output_bfd, relocation, |
| 3335 | sgot->contents + off); |
| 3336 | h->got.offset |= 1; |
| 3337 | } |
| 3338 | } |
| 3339 | |
| 3340 | relocation = sgot->output_offset + off; |
| 3341 | } |
| 3342 | else |
| 3343 | { |
| 3344 | bfd_vma off; |
| 3345 | |
| 3346 | BFD_ASSERT (local_got_offsets != NULL |
| 3347 | && local_got_offsets[r_symndx] != (bfd_vma) -1); |
| 3348 | |
| 3349 | off = local_got_offsets[r_symndx]; |
| 3350 | |
| 3351 | /* The offset must always be a multiple of 4. We use |
| 3352 | the least significant bit to record whether we have |
| 3353 | already generated the necessary reloc. */ |
| 3354 | if ((off & 1) != 0) |
| 3355 | off &= ~1; |
| 3356 | else |
| 3357 | { |
| 3358 | bfd_put_32 (output_bfd, relocation, sgot->contents + off); |
| 3359 | |
| 3360 | if (info->shared) |
| 3361 | { |
| 3362 | asection *srelgot; |
| 3363 | Elf_Internal_Rela outrel; |
| 3364 | |
| 3365 | srelgot = bfd_get_section_by_name (dynobj, ".rela.got"); |
| 3366 | BFD_ASSERT (srelgot != NULL); |
| 3367 | |
| 3368 | outrel.r_offset = (sgot->output_section->vma |
| 3369 | + sgot->output_offset |
| 3370 | + off); |
| 3371 | outrel.r_info = ELF32_R_INFO (0, R_SH_RELATIVE); |
| 3372 | outrel.r_addend = relocation; |
| 3373 | bfd_elf32_swap_reloca_out (output_bfd, &outrel, |
| 3374 | (((Elf32_External_Rela *) |
| 3375 | srelgot->contents) |
| 3376 | + srelgot->reloc_count)); |
| 3377 | ++srelgot->reloc_count; |
| 3378 | } |
| 3379 | |
| 3380 | local_got_offsets[r_symndx] |= 1; |
| 3381 | } |
| 3382 | |
| 3383 | relocation = sgot->output_offset + off; |
| 3384 | } |
| 3385 | |
| 3386 | goto final_link_relocate; |
| 3387 | |
| 3388 | case R_SH_GOTOFF: |
| 3389 | /* Relocation is relative to the start of the global offset |
| 3390 | table. */ |
| 3391 | |
| 3392 | if (sgot == NULL) |
| 3393 | { |
| 3394 | sgot = bfd_get_section_by_name (dynobj, ".got"); |
| 3395 | BFD_ASSERT (sgot != NULL); |
| 3396 | } |
| 3397 | |
| 3398 | /* Note that sgot->output_offset is not involved in this |
| 3399 | calculation. We always want the start of .got. If we |
| 3400 | defined _GLOBAL_OFFSET_TABLE in a different way, as is |
| 3401 | permitted by the ABI, we might have to change this |
| 3402 | calculation. */ |
| 3403 | relocation -= sgot->output_section->vma; |
| 3404 | |
| 3405 | goto final_link_relocate; |
| 3406 | |
| 3407 | case R_SH_GOTPC: |
| 3408 | /* Use global offset table as symbol value. */ |
| 3409 | |
| 3410 | if (sgot == NULL) |
| 3411 | { |
| 3412 | sgot = bfd_get_section_by_name (dynobj, ".got"); |
| 3413 | BFD_ASSERT (sgot != NULL); |
| 3414 | } |
| 3415 | |
| 3416 | relocation = sgot->output_section->vma; |
| 3417 | |
| 3418 | goto final_link_relocate; |
| 3419 | |
| 3420 | case R_SH_PLT32: |
| 3421 | /* Relocation is to the entry for this symbol in the |
| 3422 | procedure linkage table. */ |
| 3423 | |
| 3424 | /* Resolve a PLT reloc against a local symbol directly, |
| 3425 | without using the procedure linkage table. */ |
| 3426 | if (h == NULL) |
| 3427 | goto final_link_relocate; |
| 3428 | |
| 3429 | if (ELF_ST_VISIBILITY (h->other) == STV_INTERNAL |
| 3430 | || ELF_ST_VISIBILITY (h->other) == STV_HIDDEN) |
| 3431 | goto final_link_relocate; |
| 3432 | |
| 3433 | if (h->plt.offset == (bfd_vma) -1) |
| 3434 | { |
| 3435 | /* We didn't make a PLT entry for this symbol. This |
| 3436 | happens when statically linking PIC code, or when |
| 3437 | using -Bsymbolic. */ |
| 3438 | goto final_link_relocate; |
| 3439 | } |
| 3440 | |
| 3441 | if (splt == NULL) |
| 3442 | { |
| 3443 | splt = bfd_get_section_by_name (dynobj, ".plt"); |
| 3444 | BFD_ASSERT (splt != NULL); |
| 3445 | } |
| 3446 | |
| 3447 | relocation = (splt->output_section->vma |
| 3448 | + splt->output_offset |
| 3449 | + h->plt.offset); |
| 3450 | |
| 3451 | goto final_link_relocate; |
| 3452 | |
| 3453 | case R_SH_LOOP_START: |
| 3454 | { |
| 3455 | static bfd_vma start, end; |
| 3456 | |
| 3457 | start = (relocation + rel->r_addend |
| 3458 | - (sec->output_section->vma + sec->output_offset)); |
| 3459 | r = sh_elf_reloc_loop (r_type, input_bfd, input_section, contents, |
| 3460 | rel->r_offset, sec, start, end); |
| 3461 | break; |
| 3462 | |
| 3463 | case R_SH_LOOP_END: |
| 3464 | end = (relocation + rel->r_addend |
| 3465 | - (sec->output_section->vma + sec->output_offset)); |
| 3466 | r = sh_elf_reloc_loop (r_type, input_bfd, input_section, contents, |
| 3467 | rel->r_offset, sec, start, end); |
| 3468 | break; |
| 3469 | } |
| 3470 | } |
| 3471 | |
| 3472 | if (r != bfd_reloc_ok) |
| 3473 | { |
| 3474 | switch (r) |
| 3475 | { |
| 3476 | default: |
| 3477 | case bfd_reloc_outofrange: |
| 3478 | abort (); |
| 3479 | case bfd_reloc_overflow: |
| 3480 | { |
| 3481 | const char *name; |
| 3482 | |
| 3483 | if (h != NULL) |
| 3484 | name = h->root.root.string; |
| 3485 | else |
| 3486 | { |
| 3487 | name = (bfd_elf_string_from_elf_section |
| 3488 | (input_bfd, symtab_hdr->sh_link, sym->st_name)); |
| 3489 | if (name == NULL) |
| 3490 | return false; |
| 3491 | if (*name == '\0') |
| 3492 | name = bfd_section_name (input_bfd, sec); |
| 3493 | } |
| 3494 | if (! ((*info->callbacks->reloc_overflow) |
| 3495 | (info, name, howto->name, (bfd_vma) 0, |
| 3496 | input_bfd, input_section, rel->r_offset))) |
| 3497 | return false; |
| 3498 | } |
| 3499 | break; |
| 3500 | } |
| 3501 | } |
| 3502 | } |
| 3503 | |
| 3504 | return true; |
| 3505 | } |
| 3506 | |
| 3507 | /* This is a version of bfd_generic_get_relocated_section_contents |
| 3508 | which uses sh_elf_relocate_section. */ |
| 3509 | |
| 3510 | static bfd_byte * |
| 3511 | sh_elf_get_relocated_section_contents (output_bfd, link_info, link_order, |
| 3512 | data, relocateable, symbols) |
| 3513 | bfd *output_bfd; |
| 3514 | struct bfd_link_info *link_info; |
| 3515 | struct bfd_link_order *link_order; |
| 3516 | bfd_byte *data; |
| 3517 | boolean relocateable; |
| 3518 | asymbol **symbols; |
| 3519 | { |
| 3520 | Elf_Internal_Shdr *symtab_hdr; |
| 3521 | asection *input_section = link_order->u.indirect.section; |
| 3522 | bfd *input_bfd = input_section->owner; |
| 3523 | asection **sections = NULL; |
| 3524 | Elf_Internal_Rela *internal_relocs = NULL; |
| 3525 | Elf32_External_Sym *external_syms = NULL; |
| 3526 | Elf_Internal_Sym *internal_syms = NULL; |
| 3527 | |
| 3528 | /* We only need to handle the case of relaxing, or of having a |
| 3529 | particular set of section contents, specially. */ |
| 3530 | if (relocateable |
| 3531 | || elf_section_data (input_section)->this_hdr.contents == NULL) |
| 3532 | return bfd_generic_get_relocated_section_contents (output_bfd, link_info, |
| 3533 | link_order, data, |
| 3534 | relocateable, |
| 3535 | symbols); |
| 3536 | |
| 3537 | symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; |
| 3538 | |
| 3539 | memcpy (data, elf_section_data (input_section)->this_hdr.contents, |
| 3540 | (size_t) input_section->_raw_size); |
| 3541 | |
| 3542 | if ((input_section->flags & SEC_RELOC) != 0 |
| 3543 | && input_section->reloc_count > 0) |
| 3544 | { |
| 3545 | Elf_Internal_Sym *isymp; |
| 3546 | asection **secpp; |
| 3547 | Elf32_External_Sym *esym, *esymend; |
| 3548 | bfd_size_type size; |
| 3549 | |
| 3550 | if (symtab_hdr->contents != NULL) |
| 3551 | external_syms = (Elf32_External_Sym *) symtab_hdr->contents; |
| 3552 | else |
| 3553 | { |
| 3554 | size = symtab_hdr->sh_info; |
| 3555 | size *= sizeof (Elf32_External_Sym); |
| 3556 | external_syms = (Elf32_External_Sym *) bfd_malloc (size); |
| 3557 | if (external_syms == NULL && size != 0) |
| 3558 | goto error_return; |
| 3559 | if (bfd_seek (input_bfd, symtab_hdr->sh_offset, SEEK_SET) != 0 |
| 3560 | || bfd_bread (external_syms, size, input_bfd) != size) |
| 3561 | goto error_return; |
| 3562 | } |
| 3563 | |
| 3564 | internal_relocs = (_bfd_elf32_link_read_relocs |
| 3565 | (input_bfd, input_section, (PTR) NULL, |
| 3566 | (Elf_Internal_Rela *) NULL, false)); |
| 3567 | if (internal_relocs == NULL) |
| 3568 | goto error_return; |
| 3569 | |
| 3570 | size = symtab_hdr->sh_info; |
| 3571 | size *= sizeof (Elf_Internal_Sym); |
| 3572 | internal_syms = (Elf_Internal_Sym *) bfd_malloc (size); |
| 3573 | if (internal_syms == NULL && symtab_hdr->sh_info > 0) |
| 3574 | goto error_return; |
| 3575 | |
| 3576 | size = symtab_hdr->sh_info; |
| 3577 | size *= sizeof (asection *); |
| 3578 | sections = (asection **) bfd_malloc (size); |
| 3579 | if (sections == NULL && symtab_hdr->sh_info > 0) |
| 3580 | goto error_return; |
| 3581 | |
| 3582 | isymp = internal_syms; |
| 3583 | secpp = sections; |
| 3584 | esym = external_syms; |
| 3585 | esymend = esym + symtab_hdr->sh_info; |
| 3586 | for (; esym < esymend; ++esym, ++isymp, ++secpp) |
| 3587 | { |
| 3588 | asection *isec; |
| 3589 | |
| 3590 | bfd_elf32_swap_symbol_in (input_bfd, esym, isymp); |
| 3591 | |
| 3592 | if (isymp->st_shndx == SHN_UNDEF) |
| 3593 | isec = bfd_und_section_ptr; |
| 3594 | else if (isymp->st_shndx > 0 && isymp->st_shndx < SHN_LORESERVE) |
| 3595 | isec = bfd_section_from_elf_index (input_bfd, isymp->st_shndx); |
| 3596 | else if (isymp->st_shndx == SHN_ABS) |
| 3597 | isec = bfd_abs_section_ptr; |
| 3598 | else if (isymp->st_shndx == SHN_COMMON) |
| 3599 | isec = bfd_com_section_ptr; |
| 3600 | else |
| 3601 | { |
| 3602 | /* Who knows? */ |
| 3603 | isec = NULL; |
| 3604 | } |
| 3605 | |
| 3606 | *secpp = isec; |
| 3607 | } |
| 3608 | |
| 3609 | if (! sh_elf_relocate_section (output_bfd, link_info, input_bfd, |
| 3610 | input_section, data, internal_relocs, |
| 3611 | internal_syms, sections)) |
| 3612 | goto error_return; |
| 3613 | |
| 3614 | if (sections != NULL) |
| 3615 | free (sections); |
| 3616 | sections = NULL; |
| 3617 | if (internal_syms != NULL) |
| 3618 | free (internal_syms); |
| 3619 | internal_syms = NULL; |
| 3620 | if (external_syms != NULL && symtab_hdr->contents == NULL) |
| 3621 | free (external_syms); |
| 3622 | external_syms = NULL; |
| 3623 | if (internal_relocs != elf_section_data (input_section)->relocs) |
| 3624 | free (internal_relocs); |
| 3625 | internal_relocs = NULL; |
| 3626 | } |
| 3627 | |
| 3628 | return data; |
| 3629 | |
| 3630 | error_return: |
| 3631 | if (internal_relocs != NULL |
| 3632 | && internal_relocs != elf_section_data (input_section)->relocs) |
| 3633 | free (internal_relocs); |
| 3634 | if (external_syms != NULL && symtab_hdr->contents == NULL) |
| 3635 | free (external_syms); |
| 3636 | if (internal_syms != NULL) |
| 3637 | free (internal_syms); |
| 3638 | if (sections != NULL) |
| 3639 | free (sections); |
| 3640 | return NULL; |
| 3641 | } |
| 3642 | |
| 3643 | static asection * |
| 3644 | sh_elf_gc_mark_hook (abfd, info, rel, h, sym) |
| 3645 | bfd *abfd; |
| 3646 | struct bfd_link_info *info ATTRIBUTE_UNUSED; |
| 3647 | Elf_Internal_Rela *rel; |
| 3648 | struct elf_link_hash_entry *h; |
| 3649 | Elf_Internal_Sym *sym; |
| 3650 | { |
| 3651 | if (h != NULL) |
| 3652 | { |
| 3653 | switch (ELF32_R_TYPE (rel->r_info)) |
| 3654 | { |
| 3655 | case R_SH_GNU_VTINHERIT: |
| 3656 | case R_SH_GNU_VTENTRY: |
| 3657 | break; |
| 3658 | |
| 3659 | default: |
| 3660 | switch (h->root.type) |
| 3661 | { |
| 3662 | case bfd_link_hash_defined: |
| 3663 | case bfd_link_hash_defweak: |
| 3664 | return h->root.u.def.section; |
| 3665 | |
| 3666 | case bfd_link_hash_common: |
| 3667 | return h->root.u.c.p->section; |
| 3668 | |
| 3669 | default: |
| 3670 | break; |
| 3671 | } |
| 3672 | } |
| 3673 | } |
| 3674 | else |
| 3675 | { |
| 3676 | if (!(elf_bad_symtab (abfd) |
| 3677 | && ELF_ST_BIND (sym->st_info) != STB_LOCAL) |
| 3678 | && ! ((sym->st_shndx <= 0 || sym->st_shndx >= SHN_LORESERVE) |
| 3679 | && sym->st_shndx != SHN_COMMON)) |
| 3680 | return bfd_section_from_elf_index (abfd, sym->st_shndx); |
| 3681 | } |
| 3682 | return NULL; |
| 3683 | } |
| 3684 | |
| 3685 | /* Update the got entry reference counts for the section being removed. */ |
| 3686 | |
| 3687 | static boolean |
| 3688 | sh_elf_gc_sweep_hook (abfd, info, sec, relocs) |
| 3689 | bfd *abfd ATTRIBUTE_UNUSED; |
| 3690 | struct bfd_link_info *info ATTRIBUTE_UNUSED; |
| 3691 | asection *sec ATTRIBUTE_UNUSED; |
| 3692 | const Elf_Internal_Rela *relocs ATTRIBUTE_UNUSED; |
| 3693 | { |
| 3694 | /* We use got and plt entries for sh, but it would seem that the |
| 3695 | existing SH code does no sort of reference counting or whatnot on |
| 3696 | its GOT and PLT entries, so it is not possible to garbage collect |
| 3697 | them at this time. */ |
| 3698 | return true; |
| 3699 | } |
| 3700 | |
| 3701 | /* Look through the relocs for a section during the first phase. |
| 3702 | Since we don't do .gots or .plts, we just need to consider the |
| 3703 | virtual table relocs for gc. */ |
| 3704 | |
| 3705 | static boolean |
| 3706 | sh_elf_check_relocs (abfd, info, sec, relocs) |
| 3707 | bfd *abfd; |
| 3708 | struct bfd_link_info *info; |
| 3709 | asection *sec; |
| 3710 | const Elf_Internal_Rela *relocs; |
| 3711 | { |
| 3712 | Elf_Internal_Shdr *symtab_hdr; |
| 3713 | struct elf_link_hash_entry **sym_hashes, **sym_hashes_end; |
| 3714 | const Elf_Internal_Rela *rel; |
| 3715 | const Elf_Internal_Rela *rel_end; |
| 3716 | bfd *dynobj; |
| 3717 | bfd_vma *local_got_offsets; |
| 3718 | asection *sgot; |
| 3719 | asection *srelgot; |
| 3720 | asection *sreloc; |
| 3721 | |
| 3722 | sgot = NULL; |
| 3723 | srelgot = NULL; |
| 3724 | sreloc = NULL; |
| 3725 | |
| 3726 | if (info->relocateable) |
| 3727 | return true; |
| 3728 | |
| 3729 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; |
| 3730 | sym_hashes = elf_sym_hashes (abfd); |
| 3731 | sym_hashes_end = sym_hashes + symtab_hdr->sh_size/sizeof (Elf32_External_Sym); |
| 3732 | if (!elf_bad_symtab (abfd)) |
| 3733 | sym_hashes_end -= symtab_hdr->sh_info; |
| 3734 | |
| 3735 | dynobj = elf_hash_table (info)->dynobj; |
| 3736 | local_got_offsets = elf_local_got_offsets (abfd); |
| 3737 | |
| 3738 | rel_end = relocs + sec->reloc_count; |
| 3739 | for (rel = relocs; rel < rel_end; rel++) |
| 3740 | { |
| 3741 | struct elf_link_hash_entry *h; |
| 3742 | unsigned long r_symndx; |
| 3743 | |
| 3744 | r_symndx = ELF32_R_SYM (rel->r_info); |
| 3745 | if (r_symndx < symtab_hdr->sh_info) |
| 3746 | h = NULL; |
| 3747 | else |
| 3748 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; |
| 3749 | |
| 3750 | /* Some relocs require a global offset table. */ |
| 3751 | if (dynobj == NULL) |
| 3752 | { |
| 3753 | switch (ELF32_R_TYPE (rel->r_info)) |
| 3754 | { |
| 3755 | case R_SH_GOT32: |
| 3756 | case R_SH_GOTOFF: |
| 3757 | case R_SH_GOTPC: |
| 3758 | elf_hash_table (info)->dynobj = dynobj = abfd; |
| 3759 | if (! _bfd_elf_create_got_section (dynobj, info)) |
| 3760 | return false; |
| 3761 | break; |
| 3762 | |
| 3763 | default: |
| 3764 | break; |
| 3765 | } |
| 3766 | } |
| 3767 | |
| 3768 | switch (ELF32_R_TYPE (rel->r_info)) |
| 3769 | { |
| 3770 | /* This relocation describes the C++ object vtable hierarchy. |
| 3771 | Reconstruct it for later use during GC. */ |
| 3772 | case R_SH_GNU_VTINHERIT: |
| 3773 | if (!_bfd_elf32_gc_record_vtinherit (abfd, sec, h, rel->r_offset)) |
| 3774 | return false; |
| 3775 | break; |
| 3776 | |
| 3777 | /* This relocation describes which C++ vtable entries are actually |
| 3778 | used. Record for later use during GC. */ |
| 3779 | case R_SH_GNU_VTENTRY: |
| 3780 | if (!_bfd_elf32_gc_record_vtentry (abfd, sec, h, rel->r_addend)) |
| 3781 | return false; |
| 3782 | break; |
| 3783 | |
| 3784 | case R_SH_GOT32: |
| 3785 | /* This symbol requires a global offset table entry. */ |
| 3786 | |
| 3787 | if (sgot == NULL) |
| 3788 | { |
| 3789 | sgot = bfd_get_section_by_name (dynobj, ".got"); |
| 3790 | BFD_ASSERT (sgot != NULL); |
| 3791 | } |
| 3792 | |
| 3793 | if (srelgot == NULL |
| 3794 | && (h != NULL || info->shared)) |
| 3795 | { |
| 3796 | srelgot = bfd_get_section_by_name (dynobj, ".rela.got"); |
| 3797 | if (srelgot == NULL) |
| 3798 | { |
| 3799 | srelgot = bfd_make_section (dynobj, ".rela.got"); |
| 3800 | if (srelgot == NULL |
| 3801 | || ! bfd_set_section_flags (dynobj, srelgot, |
| 3802 | (SEC_ALLOC |
| 3803 | | SEC_LOAD |
| 3804 | | SEC_HAS_CONTENTS |
| 3805 | | SEC_IN_MEMORY |
| 3806 | | SEC_LINKER_CREATED |
| 3807 | | SEC_READONLY)) |
| 3808 | || ! bfd_set_section_alignment (dynobj, srelgot, 2)) |
| 3809 | return false; |
| 3810 | } |
| 3811 | } |
| 3812 | |
| 3813 | if (h != NULL) |
| 3814 | { |
| 3815 | if (h->got.offset != (bfd_vma) -1) |
| 3816 | { |
| 3817 | /* We have already allocated space in the .got. */ |
| 3818 | break; |
| 3819 | } |
| 3820 | h->got.offset = sgot->_raw_size; |
| 3821 | |
| 3822 | /* Make sure this symbol is output as a dynamic symbol. */ |
| 3823 | if (h->dynindx == -1) |
| 3824 | { |
| 3825 | if (! bfd_elf32_link_record_dynamic_symbol (info, h)) |
| 3826 | return false; |
| 3827 | } |
| 3828 | |
| 3829 | srelgot->_raw_size += sizeof (Elf32_External_Rela); |
| 3830 | } |
| 3831 | else |
| 3832 | { |
| 3833 | /* This is a global offset table entry for a local |
| 3834 | symbol. */ |
| 3835 | if (local_got_offsets == NULL) |
| 3836 | { |
| 3837 | bfd_size_type size; |
| 3838 | register unsigned int i; |
| 3839 | |
| 3840 | size = symtab_hdr->sh_info; |
| 3841 | size *= sizeof (bfd_vma); |
| 3842 | local_got_offsets = (bfd_vma *) bfd_alloc (abfd, size); |
| 3843 | if (local_got_offsets == NULL) |
| 3844 | return false; |
| 3845 | elf_local_got_offsets (abfd) = local_got_offsets; |
| 3846 | for (i = 0; i < symtab_hdr->sh_info; i++) |
| 3847 | local_got_offsets[i] = (bfd_vma) -1; |
| 3848 | } |
| 3849 | if (local_got_offsets[r_symndx] != (bfd_vma) -1) |
| 3850 | { |
| 3851 | /* We have already allocated space in the .got. */ |
| 3852 | break; |
| 3853 | } |
| 3854 | local_got_offsets[r_symndx] = sgot->_raw_size; |
| 3855 | |
| 3856 | if (info->shared) |
| 3857 | { |
| 3858 | /* If we are generating a shared object, we need to |
| 3859 | output a R_SH_RELATIVE reloc so that the dynamic |
| 3860 | linker can adjust this GOT entry. */ |
| 3861 | srelgot->_raw_size += sizeof (Elf32_External_Rela); |
| 3862 | } |
| 3863 | } |
| 3864 | |
| 3865 | sgot->_raw_size += 4; |
| 3866 | |
| 3867 | break; |
| 3868 | |
| 3869 | case R_SH_PLT32: |
| 3870 | /* This symbol requires a procedure linkage table entry. We |
| 3871 | actually build the entry in adjust_dynamic_symbol, |
| 3872 | because this might be a case of linking PIC code which is |
| 3873 | never referenced by a dynamic object, in which case we |
| 3874 | don't need to generate a procedure linkage table entry |
| 3875 | after all. */ |
| 3876 | |
| 3877 | /* If this is a local symbol, we resolve it directly without |
| 3878 | creating a procedure linkage table entry. */ |
| 3879 | if (h == NULL) |
| 3880 | continue; |
| 3881 | |
| 3882 | if (ELF_ST_VISIBILITY (h->other) == STV_INTERNAL |
| 3883 | || ELF_ST_VISIBILITY (h->other) == STV_HIDDEN) |
| 3884 | break; |
| 3885 | |
| 3886 | h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_PLT; |
| 3887 | |
| 3888 | break; |
| 3889 | |
| 3890 | case R_SH_DIR32: |
| 3891 | case R_SH_REL32: |
| 3892 | if (h != NULL) |
| 3893 | h->elf_link_hash_flags |= ELF_LINK_NON_GOT_REF; |
| 3894 | |
| 3895 | /* If we are creating a shared library, and this is a reloc |
| 3896 | against a global symbol, or a non PC relative reloc |
| 3897 | against a local symbol, then we need to copy the reloc |
| 3898 | into the shared library. However, if we are linking with |
| 3899 | -Bsymbolic, we do not need to copy a reloc against a |
| 3900 | global symbol which is defined in an object we are |
| 3901 | including in the link (i.e., DEF_REGULAR is set). At |
| 3902 | this point we have not seen all the input files, so it is |
| 3903 | possible that DEF_REGULAR is not set now but will be set |
| 3904 | later (it is never cleared). We account for that |
| 3905 | possibility below by storing information in the |
| 3906 | pcrel_relocs_copied field of the hash table entry. */ |
| 3907 | if (info->shared |
| 3908 | && (sec->flags & SEC_ALLOC) != 0 |
| 3909 | && (ELF32_R_TYPE (rel->r_info) != R_SH_REL32 |
| 3910 | || (h != NULL |
| 3911 | && (! info->symbolic |
| 3912 | || (h->elf_link_hash_flags |
| 3913 | & ELF_LINK_HASH_DEF_REGULAR) == 0)))) |
| 3914 | { |
| 3915 | /* When creating a shared object, we must copy these |
| 3916 | reloc types into the output file. We create a reloc |
| 3917 | section in dynobj and make room for this reloc. */ |
| 3918 | if (sreloc == NULL) |
| 3919 | { |
| 3920 | const char *name; |
| 3921 | |
| 3922 | name = (bfd_elf_string_from_elf_section |
| 3923 | (abfd, |
| 3924 | elf_elfheader (abfd)->e_shstrndx, |
| 3925 | elf_section_data (sec)->rel_hdr.sh_name)); |
| 3926 | if (name == NULL) |
| 3927 | return false; |
| 3928 | |
| 3929 | BFD_ASSERT (strncmp (name, ".rela", 5) == 0 |
| 3930 | && strcmp (bfd_get_section_name (abfd, sec), |
| 3931 | name + 5) == 0); |
| 3932 | |
| 3933 | sreloc = bfd_get_section_by_name (dynobj, name); |
| 3934 | if (sreloc == NULL) |
| 3935 | { |
| 3936 | flagword flags; |
| 3937 | |
| 3938 | sreloc = bfd_make_section (dynobj, name); |
| 3939 | flags = (SEC_HAS_CONTENTS | SEC_READONLY |
| 3940 | | SEC_IN_MEMORY | SEC_LINKER_CREATED); |
| 3941 | if ((sec->flags & SEC_ALLOC) != 0) |
| 3942 | flags |= SEC_ALLOC | SEC_LOAD; |
| 3943 | if (sreloc == NULL |
| 3944 | || ! bfd_set_section_flags (dynobj, sreloc, flags) |
| 3945 | || ! bfd_set_section_alignment (dynobj, sreloc, 2)) |
| 3946 | return false; |
| 3947 | } |
| 3948 | if (sec->flags & SEC_READONLY) |
| 3949 | info->flags |= DF_TEXTREL; |
| 3950 | } |
| 3951 | |
| 3952 | sreloc->_raw_size += sizeof (Elf32_External_Rela); |
| 3953 | |
| 3954 | /* If we are linking with -Bsymbolic, and this is a |
| 3955 | global symbol, we count the number of PC relative |
| 3956 | relocations we have entered for this symbol, so that |
| 3957 | we can discard them again if the symbol is later |
| 3958 | defined by a regular object. Note that this function |
| 3959 | is only called if we are using an elf_sh linker |
| 3960 | hash table, which means that h is really a pointer to |
| 3961 | an elf_sh_link_hash_entry. */ |
| 3962 | if (h != NULL && info->symbolic |
| 3963 | && ELF32_R_TYPE (rel->r_info) == R_SH_REL32) |
| 3964 | { |
| 3965 | struct elf_sh_link_hash_entry *eh; |
| 3966 | struct elf_sh_pcrel_relocs_copied *p; |
| 3967 | |
| 3968 | eh = (struct elf_sh_link_hash_entry *) h; |
| 3969 | |
| 3970 | for (p = eh->pcrel_relocs_copied; p != NULL; p = p->next) |
| 3971 | if (p->section == sreloc) |
| 3972 | break; |
| 3973 | |
| 3974 | if (p == NULL) |
| 3975 | { |
| 3976 | p = ((struct elf_sh_pcrel_relocs_copied *) |
| 3977 | bfd_alloc (dynobj, (bfd_size_type) sizeof *p)); |
| 3978 | if (p == NULL) |
| 3979 | return false; |
| 3980 | p->next = eh->pcrel_relocs_copied; |
| 3981 | eh->pcrel_relocs_copied = p; |
| 3982 | p->section = sreloc; |
| 3983 | p->count = 0; |
| 3984 | } |
| 3985 | |
| 3986 | ++p->count; |
| 3987 | } |
| 3988 | } |
| 3989 | |
| 3990 | break; |
| 3991 | } |
| 3992 | } |
| 3993 | |
| 3994 | return true; |
| 3995 | } |
| 3996 | |
| 3997 | static boolean |
| 3998 | sh_elf_set_mach_from_flags (abfd) |
| 3999 | bfd *abfd; |
| 4000 | { |
| 4001 | flagword flags = elf_elfheader (abfd)->e_flags; |
| 4002 | |
| 4003 | switch (flags & EF_SH_MACH_MASK) |
| 4004 | { |
| 4005 | case EF_SH1: |
| 4006 | bfd_default_set_arch_mach (abfd, bfd_arch_sh, bfd_mach_sh); |
| 4007 | break; |
| 4008 | case EF_SH2: |
| 4009 | bfd_default_set_arch_mach (abfd, bfd_arch_sh, bfd_mach_sh2); |
| 4010 | break; |
| 4011 | case EF_SH_DSP: |
| 4012 | bfd_default_set_arch_mach (abfd, bfd_arch_sh, bfd_mach_sh_dsp); |
| 4013 | break; |
| 4014 | case EF_SH3: |
| 4015 | bfd_default_set_arch_mach (abfd, bfd_arch_sh, bfd_mach_sh3); |
| 4016 | break; |
| 4017 | case EF_SH3_DSP: |
| 4018 | bfd_default_set_arch_mach (abfd, bfd_arch_sh, bfd_mach_sh3_dsp); |
| 4019 | break; |
| 4020 | case EF_SH3E: |
| 4021 | bfd_default_set_arch_mach (abfd, bfd_arch_sh, bfd_mach_sh3e); |
| 4022 | break; |
| 4023 | case EF_SH_UNKNOWN: |
| 4024 | case EF_SH4: |
| 4025 | bfd_default_set_arch_mach (abfd, bfd_arch_sh, bfd_mach_sh4); |
| 4026 | break; |
| 4027 | default: |
| 4028 | return false; |
| 4029 | } |
| 4030 | return true; |
| 4031 | } |
| 4032 | |
| 4033 | /* Function to keep SH specific file flags. */ |
| 4034 | |
| 4035 | static boolean |
| 4036 | sh_elf_set_private_flags (abfd, flags) |
| 4037 | bfd *abfd; |
| 4038 | flagword flags; |
| 4039 | { |
| 4040 | BFD_ASSERT (! elf_flags_init (abfd) |
| 4041 | || elf_elfheader (abfd)->e_flags == flags); |
| 4042 | |
| 4043 | elf_elfheader (abfd)->e_flags = flags; |
| 4044 | elf_flags_init (abfd) = true; |
| 4045 | return sh_elf_set_mach_from_flags (abfd); |
| 4046 | } |
| 4047 | |
| 4048 | /* Copy backend specific data from one object module to another */ |
| 4049 | |
| 4050 | static boolean |
| 4051 | sh_elf_copy_private_data (ibfd, obfd) |
| 4052 | bfd * ibfd; |
| 4053 | bfd * obfd; |
| 4054 | { |
| 4055 | if ( bfd_get_flavour (ibfd) != bfd_target_elf_flavour |
| 4056 | || bfd_get_flavour (obfd) != bfd_target_elf_flavour) |
| 4057 | return true; |
| 4058 | |
| 4059 | return sh_elf_set_private_flags (obfd, elf_elfheader (ibfd)->e_flags); |
| 4060 | } |
| 4061 | |
| 4062 | /* This routine checks for linking big and little endian objects |
| 4063 | together, and for linking sh-dsp with sh3e / sh4 objects. */ |
| 4064 | |
| 4065 | static boolean |
| 4066 | sh_elf_merge_private_data (ibfd, obfd) |
| 4067 | bfd *ibfd; |
| 4068 | bfd *obfd; |
| 4069 | { |
| 4070 | flagword old_flags, new_flags; |
| 4071 | |
| 4072 | if (_bfd_generic_verify_endian_match (ibfd, obfd) == false) |
| 4073 | return false; |
| 4074 | |
| 4075 | if ( bfd_get_flavour (ibfd) != bfd_target_elf_flavour |
| 4076 | || bfd_get_flavour (obfd) != bfd_target_elf_flavour) |
| 4077 | return true; |
| 4078 | |
| 4079 | if (! elf_flags_init (obfd)) |
| 4080 | { |
| 4081 | /* This happens when ld starts out with a 'blank' output file. */ |
| 4082 | elf_flags_init (obfd) = true; |
| 4083 | elf_elfheader (obfd)->e_flags = EF_SH1; |
| 4084 | } |
| 4085 | old_flags = elf_elfheader (obfd)->e_flags; |
| 4086 | new_flags = elf_elfheader (ibfd)->e_flags; |
| 4087 | if ((EF_SH_HAS_DSP (old_flags) && EF_SH_HAS_FP (new_flags)) |
| 4088 | || (EF_SH_HAS_DSP (new_flags) && EF_SH_HAS_FP (old_flags))) |
| 4089 | { |
| 4090 | (*_bfd_error_handler) |
| 4091 | ("%s: uses %s instructions while previous modules use %s instructions", |
| 4092 | bfd_get_filename (ibfd), |
| 4093 | EF_SH_HAS_DSP (new_flags) ? "dsp" : "floating point", |
| 4094 | EF_SH_HAS_DSP (new_flags) ? "floating point" : "dsp"); |
| 4095 | bfd_set_error (bfd_error_bad_value); |
| 4096 | return false; |
| 4097 | } |
| 4098 | elf_elfheader (obfd)->e_flags = EF_SH_MERGE_MACH (old_flags, new_flags); |
| 4099 | |
| 4100 | return sh_elf_set_mach_from_flags (obfd); |
| 4101 | } |
| 4102 | |
| 4103 | /* Finish up dynamic symbol handling. We set the contents of various |
| 4104 | dynamic sections here. */ |
| 4105 | |
| 4106 | static boolean |
| 4107 | sh_elf_finish_dynamic_symbol (output_bfd, info, h, sym) |
| 4108 | bfd *output_bfd; |
| 4109 | struct bfd_link_info *info; |
| 4110 | struct elf_link_hash_entry *h; |
| 4111 | Elf_Internal_Sym *sym; |
| 4112 | { |
| 4113 | bfd *dynobj; |
| 4114 | |
| 4115 | dynobj = elf_hash_table (info)->dynobj; |
| 4116 | |
| 4117 | if (h->plt.offset != (bfd_vma) -1) |
| 4118 | { |
| 4119 | asection *splt; |
| 4120 | asection *sgot; |
| 4121 | asection *srel; |
| 4122 | |
| 4123 | bfd_vma plt_index; |
| 4124 | bfd_vma got_offset; |
| 4125 | Elf_Internal_Rela rel; |
| 4126 | |
| 4127 | /* This symbol has an entry in the procedure linkage table. Set |
| 4128 | it up. */ |
| 4129 | |
| 4130 | BFD_ASSERT (h->dynindx != -1); |
| 4131 | |
| 4132 | splt = bfd_get_section_by_name (dynobj, ".plt"); |
| 4133 | sgot = bfd_get_section_by_name (dynobj, ".got.plt"); |
| 4134 | srel = bfd_get_section_by_name (dynobj, ".rela.plt"); |
| 4135 | BFD_ASSERT (splt != NULL && sgot != NULL && srel != NULL); |
| 4136 | |
| 4137 | /* Get the index in the procedure linkage table which |
| 4138 | corresponds to this symbol. This is the index of this symbol |
| 4139 | in all the symbols for which we are making plt entries. The |
| 4140 | first entry in the procedure linkage table is reserved. */ |
| 4141 | plt_index = h->plt.offset / elf_sh_sizeof_plt (info) - 1; |
| 4142 | |
| 4143 | /* Get the offset into the .got table of the entry that |
| 4144 | corresponds to this function. Each .got entry is 4 bytes. |
| 4145 | The first three are reserved. */ |
| 4146 | got_offset = (plt_index + 3) * 4; |
| 4147 | |
| 4148 | /* Fill in the entry in the procedure linkage table. */ |
| 4149 | if (! info->shared) |
| 4150 | { |
| 4151 | if (elf_sh_plt_entry == NULL) |
| 4152 | { |
| 4153 | elf_sh_plt_entry = (bfd_big_endian (output_bfd) ? |
| 4154 | elf_sh_plt_entry_be : elf_sh_plt_entry_le); |
| 4155 | } |
| 4156 | memcpy (splt->contents + h->plt.offset, elf_sh_plt_entry, |
| 4157 | elf_sh_sizeof_plt (info)); |
| 4158 | bfd_put_32 (output_bfd, |
| 4159 | (sgot->output_section->vma |
| 4160 | + sgot->output_offset |
| 4161 | + got_offset), |
| 4162 | (splt->contents + h->plt.offset |
| 4163 | + elf_sh_plt_symbol_offset (info))); |
| 4164 | |
| 4165 | bfd_put_32 (output_bfd, |
| 4166 | (splt->output_section->vma + splt->output_offset), |
| 4167 | (splt->contents + h->plt.offset |
| 4168 | + elf_sh_plt_plt0_offset (info))); |
| 4169 | } |
| 4170 | else |
| 4171 | { |
| 4172 | if (elf_sh_pic_plt_entry == NULL) |
| 4173 | { |
| 4174 | elf_sh_pic_plt_entry = (bfd_big_endian (output_bfd) ? |
| 4175 | elf_sh_pic_plt_entry_be : |
| 4176 | elf_sh_pic_plt_entry_le); |
| 4177 | } |
| 4178 | memcpy (splt->contents + h->plt.offset, elf_sh_pic_plt_entry, |
| 4179 | elf_sh_sizeof_plt (info)); |
| 4180 | bfd_put_32 (output_bfd, got_offset, |
| 4181 | (splt->contents + h->plt.offset |
| 4182 | + elf_sh_plt_symbol_offset (info))); |
| 4183 | } |
| 4184 | |
| 4185 | bfd_put_32 (output_bfd, plt_index * sizeof (Elf32_External_Rela), |
| 4186 | (splt->contents + h->plt.offset |
| 4187 | + elf_sh_plt_reloc_offset (info))); |
| 4188 | |
| 4189 | /* Fill in the entry in the global offset table. */ |
| 4190 | bfd_put_32 (output_bfd, |
| 4191 | (splt->output_section->vma |
| 4192 | + splt->output_offset |
| 4193 | + h->plt.offset |
| 4194 | + elf_sh_plt_temp_offset (info)), |
| 4195 | sgot->contents + got_offset); |
| 4196 | |
| 4197 | /* Fill in the entry in the .rela.plt section. */ |
| 4198 | rel.r_offset = (sgot->output_section->vma |
| 4199 | + sgot->output_offset |
| 4200 | + got_offset); |
| 4201 | rel.r_info = ELF32_R_INFO (h->dynindx, R_SH_JMP_SLOT); |
| 4202 | rel.r_addend = 0; |
| 4203 | bfd_elf32_swap_reloca_out (output_bfd, &rel, |
| 4204 | ((Elf32_External_Rela *) srel->contents |
| 4205 | + plt_index)); |
| 4206 | |
| 4207 | if ((h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0) |
| 4208 | { |
| 4209 | /* Mark the symbol as undefined, rather than as defined in |
| 4210 | the .plt section. Leave the value alone. */ |
| 4211 | sym->st_shndx = SHN_UNDEF; |
| 4212 | } |
| 4213 | } |
| 4214 | |
| 4215 | if (h->got.offset != (bfd_vma) -1) |
| 4216 | { |
| 4217 | asection *sgot; |
| 4218 | asection *srel; |
| 4219 | Elf_Internal_Rela rel; |
| 4220 | |
| 4221 | /* This symbol has an entry in the global offset table. Set it |
| 4222 | up. */ |
| 4223 | |
| 4224 | sgot = bfd_get_section_by_name (dynobj, ".got"); |
| 4225 | srel = bfd_get_section_by_name (dynobj, ".rela.got"); |
| 4226 | BFD_ASSERT (sgot != NULL && srel != NULL); |
| 4227 | |
| 4228 | rel.r_offset = (sgot->output_section->vma |
| 4229 | + sgot->output_offset |
| 4230 | + (h->got.offset &~ (bfd_vma) 1)); |
| 4231 | |
| 4232 | /* If this is a -Bsymbolic link, and the symbol is defined |
| 4233 | locally, we just want to emit a RELATIVE reloc. Likewise if |
| 4234 | the symbol was forced to be local because of a version file. |
| 4235 | The entry in the global offset table will already have been |
| 4236 | initialized in the relocate_section function. */ |
| 4237 | if (info->shared |
| 4238 | && (info->symbolic || h->dynindx == -1) |
| 4239 | && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR)) |
| 4240 | { |
| 4241 | rel.r_info = ELF32_R_INFO (0, R_SH_RELATIVE); |
| 4242 | rel.r_addend = (h->root.u.def.value |
| 4243 | + h->root.u.def.section->output_section->vma |
| 4244 | + h->root.u.def.section->output_offset); |
| 4245 | } |
| 4246 | else |
| 4247 | { |
| 4248 | bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + h->got.offset); |
| 4249 | rel.r_info = ELF32_R_INFO (h->dynindx, R_SH_GLOB_DAT); |
| 4250 | rel.r_addend = 0; |
| 4251 | } |
| 4252 | |
| 4253 | bfd_elf32_swap_reloca_out (output_bfd, &rel, |
| 4254 | ((Elf32_External_Rela *) srel->contents |
| 4255 | + srel->reloc_count)); |
| 4256 | ++srel->reloc_count; |
| 4257 | } |
| 4258 | |
| 4259 | if ((h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_COPY) != 0) |
| 4260 | { |
| 4261 | asection *s; |
| 4262 | Elf_Internal_Rela rel; |
| 4263 | |
| 4264 | /* This symbol needs a copy reloc. Set it up. */ |
| 4265 | |
| 4266 | BFD_ASSERT (h->dynindx != -1 |
| 4267 | && (h->root.type == bfd_link_hash_defined |
| 4268 | || h->root.type == bfd_link_hash_defweak)); |
| 4269 | |
| 4270 | s = bfd_get_section_by_name (h->root.u.def.section->owner, |
| 4271 | ".rela.bss"); |
| 4272 | BFD_ASSERT (s != NULL); |
| 4273 | |
| 4274 | rel.r_offset = (h->root.u.def.value |
| 4275 | + h->root.u.def.section->output_section->vma |
| 4276 | + h->root.u.def.section->output_offset); |
| 4277 | rel.r_info = ELF32_R_INFO (h->dynindx, R_SH_COPY); |
| 4278 | rel.r_addend = 0; |
| 4279 | bfd_elf32_swap_reloca_out (output_bfd, &rel, |
| 4280 | ((Elf32_External_Rela *) s->contents |
| 4281 | + s->reloc_count)); |
| 4282 | ++s->reloc_count; |
| 4283 | } |
| 4284 | |
| 4285 | /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. */ |
| 4286 | if (strcmp (h->root.root.string, "_DYNAMIC") == 0 |
| 4287 | || strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0) |
| 4288 | sym->st_shndx = SHN_ABS; |
| 4289 | |
| 4290 | return true; |
| 4291 | } |
| 4292 | |
| 4293 | /* Finish up the dynamic sections. */ |
| 4294 | |
| 4295 | static boolean |
| 4296 | sh_elf_finish_dynamic_sections (output_bfd, info) |
| 4297 | bfd *output_bfd; |
| 4298 | struct bfd_link_info *info; |
| 4299 | { |
| 4300 | bfd *dynobj; |
| 4301 | asection *sgot; |
| 4302 | asection *sdyn; |
| 4303 | |
| 4304 | dynobj = elf_hash_table (info)->dynobj; |
| 4305 | |
| 4306 | sgot = bfd_get_section_by_name (dynobj, ".got.plt"); |
| 4307 | BFD_ASSERT (sgot != NULL); |
| 4308 | sdyn = bfd_get_section_by_name (dynobj, ".dynamic"); |
| 4309 | |
| 4310 | if (elf_hash_table (info)->dynamic_sections_created) |
| 4311 | { |
| 4312 | asection *splt; |
| 4313 | Elf32_External_Dyn *dyncon, *dynconend; |
| 4314 | |
| 4315 | BFD_ASSERT (sdyn != NULL); |
| 4316 | |
| 4317 | dyncon = (Elf32_External_Dyn *) sdyn->contents; |
| 4318 | dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->_raw_size); |
| 4319 | for (; dyncon < dynconend; dyncon++) |
| 4320 | { |
| 4321 | Elf_Internal_Dyn dyn; |
| 4322 | const char *name; |
| 4323 | asection *s; |
| 4324 | |
| 4325 | bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn); |
| 4326 | |
| 4327 | switch (dyn.d_tag) |
| 4328 | { |
| 4329 | default: |
| 4330 | break; |
| 4331 | |
| 4332 | case DT_PLTGOT: |
| 4333 | name = ".got"; |
| 4334 | goto get_vma; |
| 4335 | |
| 4336 | case DT_JMPREL: |
| 4337 | name = ".rela.plt"; |
| 4338 | get_vma: |
| 4339 | s = bfd_get_section_by_name (output_bfd, name); |
| 4340 | BFD_ASSERT (s != NULL); |
| 4341 | dyn.d_un.d_ptr = s->vma; |
| 4342 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); |
| 4343 | break; |
| 4344 | |
| 4345 | case DT_PLTRELSZ: |
| 4346 | s = bfd_get_section_by_name (output_bfd, ".rela.plt"); |
| 4347 | BFD_ASSERT (s != NULL); |
| 4348 | if (s->_cooked_size != 0) |
| 4349 | dyn.d_un.d_val = s->_cooked_size; |
| 4350 | else |
| 4351 | dyn.d_un.d_val = s->_raw_size; |
| 4352 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); |
| 4353 | break; |
| 4354 | |
| 4355 | case DT_RELASZ: |
| 4356 | /* My reading of the SVR4 ABI indicates that the |
| 4357 | procedure linkage table relocs (DT_JMPREL) should be |
| 4358 | included in the overall relocs (DT_RELA). This is |
| 4359 | what Solaris does. However, UnixWare can not handle |
| 4360 | that case. Therefore, we override the DT_RELASZ entry |
| 4361 | here to make it not include the JMPREL relocs. Since |
| 4362 | the linker script arranges for .rela.plt to follow all |
| 4363 | other relocation sections, we don't have to worry |
| 4364 | about changing the DT_RELA entry. */ |
| 4365 | s = bfd_get_section_by_name (output_bfd, ".rela.plt"); |
| 4366 | if (s != NULL) |
| 4367 | { |
| 4368 | if (s->_cooked_size != 0) |
| 4369 | dyn.d_un.d_val -= s->_cooked_size; |
| 4370 | else |
| 4371 | dyn.d_un.d_val -= s->_raw_size; |
| 4372 | } |
| 4373 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); |
| 4374 | break; |
| 4375 | } |
| 4376 | } |
| 4377 | |
| 4378 | /* Fill in the first entry in the procedure linkage table. */ |
| 4379 | splt = bfd_get_section_by_name (dynobj, ".plt"); |
| 4380 | if (splt && splt->_raw_size > 0) |
| 4381 | { |
| 4382 | if (info->shared) |
| 4383 | { |
| 4384 | if (elf_sh_pic_plt_entry == NULL) |
| 4385 | { |
| 4386 | elf_sh_pic_plt_entry = (bfd_big_endian (output_bfd) ? |
| 4387 | elf_sh_pic_plt_entry_be : |
| 4388 | elf_sh_pic_plt_entry_le); |
| 4389 | } |
| 4390 | memcpy (splt->contents, elf_sh_pic_plt_entry, |
| 4391 | elf_sh_sizeof_plt (info)); |
| 4392 | } |
| 4393 | else |
| 4394 | { |
| 4395 | if (elf_sh_plt0_entry == NULL) |
| 4396 | { |
| 4397 | elf_sh_plt0_entry = (bfd_big_endian (output_bfd) ? |
| 4398 | elf_sh_plt0_entry_be : |
| 4399 | elf_sh_plt0_entry_le); |
| 4400 | } |
| 4401 | memcpy (splt->contents, elf_sh_plt0_entry, PLT_ENTRY_SIZE); |
| 4402 | bfd_put_32 (output_bfd, |
| 4403 | sgot->output_section->vma + sgot->output_offset + 4, |
| 4404 | splt->contents + elf_sh_plt0_gotid_offset (info)); |
| 4405 | bfd_put_32 (output_bfd, |
| 4406 | sgot->output_section->vma + sgot->output_offset + 8, |
| 4407 | splt->contents + elf_sh_plt0_linker_offset (info)); |
| 4408 | } |
| 4409 | |
| 4410 | /* UnixWare sets the entsize of .plt to 4, although that doesn't |
| 4411 | really seem like the right value. */ |
| 4412 | elf_section_data (splt->output_section)->this_hdr.sh_entsize = 4; |
| 4413 | } |
| 4414 | } |
| 4415 | |
| 4416 | /* Fill in the first three entries in the global offset table. */ |
| 4417 | if (sgot->_raw_size > 0) |
| 4418 | { |
| 4419 | if (sdyn == NULL) |
| 4420 | bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents); |
| 4421 | else |
| 4422 | bfd_put_32 (output_bfd, |
| 4423 | sdyn->output_section->vma + sdyn->output_offset, |
| 4424 | sgot->contents); |
| 4425 | bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 4); |
| 4426 | bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 8); |
| 4427 | } |
| 4428 | |
| 4429 | elf_section_data (sgot->output_section)->this_hdr.sh_entsize = 4; |
| 4430 | |
| 4431 | return true; |
| 4432 | } |
| 4433 | |
| 4434 | static enum elf_reloc_type_class |
| 4435 | sh_elf_reloc_type_class (type) |
| 4436 | int type; |
| 4437 | { |
| 4438 | switch (type) |
| 4439 | { |
| 4440 | case R_SH_RELATIVE: |
| 4441 | return reloc_class_relative; |
| 4442 | case R_SH_JMP_SLOT: |
| 4443 | return reloc_class_plt; |
| 4444 | case R_SH_COPY: |
| 4445 | return reloc_class_copy; |
| 4446 | default: |
| 4447 | return reloc_class_normal; |
| 4448 | } |
| 4449 | } |
| 4450 | |
| 4451 | #ifndef ELF_ARCH |
| 4452 | #define TARGET_BIG_SYM bfd_elf32_sh_vec |
| 4453 | #define TARGET_BIG_NAME "elf32-sh" |
| 4454 | #define TARGET_LITTLE_SYM bfd_elf32_shl_vec |
| 4455 | #define TARGET_LITTLE_NAME "elf32-shl" |
| 4456 | #define ELF_ARCH bfd_arch_sh |
| 4457 | #define ELF_MACHINE_CODE EM_SH |
| 4458 | #define ELF_MAXPAGESIZE 128 |
| 4459 | |
| 4460 | #define elf_symbol_leading_char '_' |
| 4461 | #endif /* ELF_ARCH */ |
| 4462 | |
| 4463 | #define bfd_elf32_bfd_reloc_type_lookup sh_elf_reloc_type_lookup |
| 4464 | #define elf_info_to_howto sh_elf_info_to_howto |
| 4465 | #define bfd_elf32_bfd_relax_section sh_elf_relax_section |
| 4466 | #define elf_backend_relocate_section sh_elf_relocate_section |
| 4467 | #define bfd_elf32_bfd_get_relocated_section_contents \ |
| 4468 | sh_elf_get_relocated_section_contents |
| 4469 | #define elf_backend_object_p sh_elf_set_mach_from_flags |
| 4470 | #define bfd_elf32_bfd_set_private_bfd_flags \ |
| 4471 | sh_elf_set_private_flags |
| 4472 | #define bfd_elf32_bfd_copy_private_bfd_data \ |
| 4473 | sh_elf_copy_private_data |
| 4474 | #define bfd_elf32_bfd_merge_private_bfd_data \ |
| 4475 | sh_elf_merge_private_data |
| 4476 | |
| 4477 | #define elf_backend_gc_mark_hook sh_elf_gc_mark_hook |
| 4478 | #define elf_backend_gc_sweep_hook sh_elf_gc_sweep_hook |
| 4479 | #define elf_backend_check_relocs sh_elf_check_relocs |
| 4480 | |
| 4481 | #define elf_backend_can_gc_sections 1 |
| 4482 | #define elf_backend_create_dynamic_sections \ |
| 4483 | sh_elf_create_dynamic_sections |
| 4484 | #define bfd_elf32_bfd_link_hash_table_create \ |
| 4485 | sh_elf_link_hash_table_create |
| 4486 | #define elf_backend_adjust_dynamic_symbol \ |
| 4487 | sh_elf_adjust_dynamic_symbol |
| 4488 | #define elf_backend_size_dynamic_sections \ |
| 4489 | sh_elf_size_dynamic_sections |
| 4490 | #define elf_backend_finish_dynamic_symbol \ |
| 4491 | sh_elf_finish_dynamic_symbol |
| 4492 | #define elf_backend_finish_dynamic_sections \ |
| 4493 | sh_elf_finish_dynamic_sections |
| 4494 | #define elf_backend_reloc_type_class sh_elf_reloc_type_class |
| 4495 | |
| 4496 | #define elf_backend_want_got_plt 1 |
| 4497 | #define elf_backend_plt_readonly 1 |
| 4498 | #define elf_backend_want_plt_sym 0 |
| 4499 | #define elf_backend_got_header_size 12 |
| 4500 | #define elf_backend_plt_header_size PLT_ENTRY_SIZE |
| 4501 | #include "elf32-target.h" |