1 /* M32R-specific support for 32-bit ELF. 2 Copyright 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004 3 Free Software Foundation, Inc. 4 5 This file is part of BFD, the Binary File Descriptor library. 6 7 This program is free software; you can redistribute it and/or modify 8 it under the terms of the GNU General Public License as published by 9 the Free Software Foundation; either version 2 of the License, or 10 (at your option) any later version. 11 12 This program is distributed in the hope that it will be useful, 13 but WITHOUT ANY WARRANTY; without even the implied warranty of 14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15 GNU General Public License for more details. 16 17 You should have received a copy of the GNU General Public License 18 along with this program; if not, write to the Free Software 19 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ 20 21 #include "bfd.h" 22 #include "sysdep.h" 23 #include "libbfd.h" 24 #include "elf-bfd.h" 25 #include "elf/m32r.h" 26 27 static bfd_reloc_status_type m32r_elf_10_pcrel_reloc 28 PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **)); 29 static bfd_reloc_status_type m32r_elf_do_10_pcrel_reloc 30 PARAMS ((bfd *, reloc_howto_type *, asection *, 31 bfd_byte *, bfd_vma, asection *, bfd_vma, bfd_vma)); 32 static bfd_reloc_status_type m32r_elf_hi16_reloc 33 PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **)); 34 static void m32r_elf_relocate_hi16 35 PARAMS ((bfd *, int, Elf_Internal_Rela *, Elf_Internal_Rela *, 36 bfd_byte *, bfd_vma)); 37 bfd_reloc_status_type m32r_elf_lo16_reloc 38 PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **)); 39 bfd_reloc_status_type m32r_elf_generic_reloc 40 PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **)); 41 static bfd_reloc_status_type m32r_elf_sda16_reloc 42 PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **)); 43 static reloc_howto_type *bfd_elf32_bfd_reloc_type_lookup 44 PARAMS ((bfd *abfd, bfd_reloc_code_real_type code)); 45 static void m32r_info_to_howto_rel 46 PARAMS ((bfd *, arelent *, Elf_Internal_Rela *)); 47 static void m32r_info_to_howto 48 PARAMS ((bfd *, arelent *, Elf_Internal_Rela *)); 49 bfd_boolean _bfd_m32r_elf_section_from_bfd_section 50 PARAMS ((bfd *, asection *, int *)); 51 void _bfd_m32r_elf_symbol_processing 52 PARAMS ((bfd *, asymbol *)); 53 static bfd_boolean m32r_elf_add_symbol_hook 54 PARAMS ((bfd *, struct bfd_link_info *, Elf_Internal_Sym *, 55 const char **, flagword *, asection **, bfd_vma *)); 56 static bfd_boolean m32r_elf_relocate_section 57 PARAMS ((bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *, 58 Elf_Internal_Rela *, Elf_Internal_Sym *, asection **)); 59 #if 0 /* not yet */ 60 static bfd_boolean m32r_elf_relax_delete_bytes 61 PARAMS ((bfd *, asection *, bfd_vma, int)); 62 #endif 63 static bfd_reloc_status_type m32r_elf_final_sda_base 64 PARAMS ((bfd *, struct bfd_link_info *, const char **, bfd_vma *)); 65 static bfd_boolean m32r_elf_object_p 66 PARAMS ((bfd *)); 67 static void m32r_elf_final_write_processing 68 PARAMS ((bfd *, bfd_boolean)); 69 static bfd_boolean m32r_elf_set_private_flags 70 PARAMS ((bfd *, flagword)); 71 static bfd_boolean m32r_elf_merge_private_bfd_data 72 PARAMS ((bfd *, bfd *)); 73 static bfd_boolean m32r_elf_print_private_bfd_data 74 PARAMS ((bfd *, PTR)); 75 static bfd_boolean m32r_elf_gc_sweep_hook 76 PARAMS ((bfd *, struct bfd_link_info *, asection *, 77 const Elf_Internal_Rela *)); 78 static bfd_boolean m32r_elf_check_relocs 79 PARAMS ((bfd *, struct bfd_link_info *, asection *, 80 const Elf_Internal_Rela *)); 81 82 static bfd_boolean m32r_elf_adjust_dynamic_symbol 83 PARAMS ((struct bfd_link_info *, struct elf_link_hash_entry *)); 84 static bfd_boolean m32r_elf_size_dynamic_sections 85 PARAMS ((bfd *, struct bfd_link_info *)); 86 87 asection * m32r_elf_gc_mark_hook 88 PARAMS ((asection *, struct bfd_link_info *, Elf_Internal_Rela *, 89 struct elf_link_hash_entry *, Elf_Internal_Sym *)); 90 91 static bfd_boolean m32r_elf_create_dynamic_sections 92 PARAMS ((bfd *, struct bfd_link_info *)); 93 94 static bfd_boolean m32r_elf_finish_dynamic_sections 95 PARAMS ((bfd *, struct bfd_link_info *)); 96 97 static bfd_boolean m32r_elf_finish_dynamic_symbol 98 PARAMS ((bfd *, struct bfd_link_info *, struct elf_link_hash_entry *, 99 Elf_Internal_Sym *)); 100 101 static bfd_boolean allocate_dynrelocs 102 PARAMS ((struct elf_link_hash_entry *, PTR)); 103 static bfd_boolean readonly_dynrelocs 104 PARAMS ((struct elf_link_hash_entry *, PTR)); 105 static enum elf_reloc_type_class m32r_elf_reloc_type_class 106 PARAMS ((const Elf_Internal_Rela *)); 107 static bfd_boolean m32r_elf_fake_sections 108 PARAMS ((bfd *, Elf_Internal_Shdr *, asection *)); 109 110 #define NOP_INSN 0x7000 111 #define MAKE_PARALLEL(insn) ((insn) | 0x8000) 112 113 /* Use REL instead of RELA to save space. 114 This only saves space in libraries and object files, but perhaps 115 relocs will be put in ROM? All in all though, REL relocs are a pain 116 to work with. */ 117 /* #define USE_REL 1 118 119 #ifndef USE_REL 120 #define USE_REL 0 121 #endif */ 122 /* Use RELA. But use REL to link old objects for backwords compatibility. */ 123 124 /* Functions for the M32R ELF linker. */ 125 126 /* The name of the dynamic interpreter. This is put in the .interp 127 section. */ 128 129 #define ELF_DYNAMIC_INTERPRETER "/usr/lib/libc.so.1" 130 131 /* The nop opcode we use. */ 132 133 #define M32R_NOP 0x7000f000 134 135 #define PLT_EMPTY 0x10101010 /* RIE -> RIE */ 136 137 /* The size in bytes of an entry in the procedure linkage table. */ 138 139 #define PLT_ENTRY_SIZE 20 140 #define PLT_HEADER_SIZE 20 141 142 /* The first one entries in a procedure linkage table are reserved, 143 and the initial contents are unimportant (we zero them out). 144 Subsequent entries look like this. */ 145 146 #define PLT0_ENTRY_WORD0 0xd6c00000 /* seth r6, #high(.got+4) */ 147 #define PLT0_ENTRY_WORD1 0x86e60000 /* or3 r6, r6, #low(.got)+4) */ 148 #define PLT0_ENTRY_WORD2 0x24e626c6 /* ld r4, @r6+ -> ld r6, @r6 */ 149 #define PLT0_ENTRY_WORD3 0x1fc6f000 /* jmp r6 || pnop */ 150 #define PLT0_ENTRY_WORD4 PLT_EMPTY /* RIE -> RIE */ 151 152 #define PLT0_PIC_ENTRY_WORD0 0xa4cc0004 /* ld r4, @(4,r12) */ 153 #define PLT0_PIC_ENTRY_WORD1 0xa6cc0008 /* ld r6, @(8,r12) */ 154 #define PLT0_PIC_ENTRY_WORD2 0x1fc6f000 /* jmp r6 || nop */ 155 #define PLT0_PIC_ENTRY_WORD3 PLT_EMPTY /* RIE -> RIE */ 156 #define PLT0_PIC_ENTRY_WORD4 PLT_EMPTY /* RIE -> RIE */ 157 158 #define PLT_ENTRY_WORD0 0xe6000000 /* ld24 r6, .name_in_GOT */ 159 #define PLT_ENTRY_WORD1 0x06acf000 /* add r6, r12 || nop */ 160 #define PLT_ENTRY_WORD0b 0xd6c00000 /* seth r6, #high(.name_in_GOT) */ 161 #define PLT_ENTRY_WORD1b 0x86e60000 /* or3 r6, r6, #low(.name_in_GOT) */ 162 #define PLT_ENTRY_WORD2 0x26c61fc6 /* ld r6, @r6 -> jmp r6 */ 163 #define PLT_ENTRY_WORD3 0xe5000000 /* ld24 r5, $offset */ 164 #define PLT_ENTRY_WORD4 0xff000000 /* bra .plt0. */ 165 166 167 static reloc_howto_type m32r_elf_howto_table[] = 168 { 169 /* This reloc does nothing. */ 170 HOWTO (R_M32R_NONE, /* type */ 171 0, /* rightshift */ 172 2, /* size (0 = byte, 1 = short, 2 = long) */ 173 32, /* bitsize */ 174 FALSE, /* pc_relative */ 175 0, /* bitpos */ 176 complain_overflow_bitfield, /* complain_on_overflow */ 177 bfd_elf_generic_reloc, /* special_function */ 178 "R_M32R_NONE", /* name */ 179 FALSE, /* partial_inplace */ 180 0, /* src_mask */ 181 0, /* dst_mask */ 182 FALSE), /* pcrel_offset */ 183 184 /* A 16 bit absolute relocation. */ 185 HOWTO (R_M32R_16, /* type */ 186 0, /* rightshift */ 187 1, /* size (0 = byte, 1 = short, 2 = long) */ 188 16, /* bitsize */ 189 FALSE, /* pc_relative */ 190 0, /* bitpos */ 191 complain_overflow_bitfield, /* complain_on_overflow */ 192 m32r_elf_generic_reloc,/* special_function */ 193 "R_M32R_16", /* name */ 194 TRUE, /* partial_inplace */ 195 0xffff, /* src_mask */ 196 0xffff, /* dst_mask */ 197 FALSE), /* pcrel_offset */ 198 199 /* A 32 bit absolute relocation. */ 200 HOWTO (R_M32R_32, /* type */ 201 0, /* rightshift */ 202 2, /* size (0 = byte, 1 = short, 2 = long) */ 203 32, /* bitsize */ 204 FALSE, /* pc_relative */ 205 0, /* bitpos */ 206 complain_overflow_bitfield, /* complain_on_overflow */ 207 m32r_elf_generic_reloc,/* special_function */ 208 "R_M32R_32", /* name */ 209 TRUE, /* partial_inplace */ 210 0xffffffff, /* src_mask */ 211 0xffffffff, /* dst_mask */ 212 FALSE), /* pcrel_offset */ 213 214 /* A 24 bit address. */ 215 HOWTO (R_M32R_24, /* type */ 216 0, /* rightshift */ 217 2, /* size (0 = byte, 1 = short, 2 = long) */ 218 24, /* bitsize */ 219 FALSE, /* pc_relative */ 220 0, /* bitpos */ 221 complain_overflow_unsigned, /* complain_on_overflow */ 222 m32r_elf_generic_reloc,/* special_function */ 223 "R_M32R_24", /* name */ 224 TRUE, /* partial_inplace */ 225 0xffffff, /* src_mask */ 226 0xffffff, /* dst_mask */ 227 FALSE), /* pcrel_offset */ 228 229 /* An PC Relative 10-bit relocation, shifted by 2. 230 This reloc is complicated because relocations are relative to pc & -4. 231 i.e. branches in the right insn slot use the address of the left insn 232 slot for pc. */ 233 /* ??? It's not clear whether this should have partial_inplace set or not. 234 Branch relaxing in the assembler can store the addend in the insn, 235 and if bfd_install_relocation gets called the addend may get added 236 again. */ 237 HOWTO (R_M32R_10_PCREL, /* type */ 238 2, /* rightshift */ 239 1, /* size (0 = byte, 1 = short, 2 = long) */ 240 10, /* bitsize */ 241 TRUE, /* pc_relative */ 242 0, /* bitpos */ 243 complain_overflow_signed, /* complain_on_overflow */ 244 m32r_elf_10_pcrel_reloc, /* special_function */ 245 "R_M32R_10_PCREL", /* name */ 246 FALSE, /* partial_inplace */ 247 0xff, /* src_mask */ 248 0xff, /* dst_mask */ 249 TRUE), /* pcrel_offset */ 250 251 /* A relative 18 bit relocation, right shifted by 2. */ 252 HOWTO (R_M32R_18_PCREL, /* type */ 253 2, /* rightshift */ 254 2, /* size (0 = byte, 1 = short, 2 = long) */ 255 16, /* bitsize */ 256 TRUE, /* pc_relative */ 257 0, /* bitpos */ 258 complain_overflow_signed, /* complain_on_overflow */ 259 bfd_elf_generic_reloc, /* special_function */ 260 "R_M32R_18_PCREL", /* name */ 261 FALSE, /* partial_inplace */ 262 0xffff, /* src_mask */ 263 0xffff, /* dst_mask */ 264 TRUE), /* pcrel_offset */ 265 266 /* A relative 26 bit relocation, right shifted by 2. */ 267 /* ??? It's not clear whether this should have partial_inplace set or not. 268 Branch relaxing in the assembler can store the addend in the insn, 269 and if bfd_install_relocation gets called the addend may get added 270 again. */ 271 HOWTO (R_M32R_26_PCREL, /* type */ 272 2, /* rightshift */ 273 2, /* size (0 = byte, 1 = short, 2 = long) */ 274 26, /* bitsize */ 275 TRUE, /* pc_relative */ 276 0, /* bitpos */ 277 complain_overflow_signed, /* complain_on_overflow */ 278 bfd_elf_generic_reloc, /* special_function */ 279 "R_M32R_26_PCREL", /* name */ 280 FALSE, /* partial_inplace */ 281 0xffffff, /* src_mask */ 282 0xffffff, /* dst_mask */ 283 TRUE), /* pcrel_offset */ 284 285 /* High 16 bits of address when lower 16 is or'd in. */ 286 HOWTO (R_M32R_HI16_ULO, /* type */ 287 16, /* rightshift */ 288 2, /* size (0 = byte, 1 = short, 2 = long) */ 289 16, /* bitsize */ 290 FALSE, /* pc_relative */ 291 0, /* bitpos */ 292 complain_overflow_dont, /* complain_on_overflow */ 293 m32r_elf_hi16_reloc, /* special_function */ 294 "R_M32R_HI16_ULO", /* name */ 295 TRUE, /* partial_inplace */ 296 0x0000ffff, /* src_mask */ 297 0x0000ffff, /* dst_mask */ 298 FALSE), /* pcrel_offset */ 299 300 /* High 16 bits of address when lower 16 is added in. */ 301 HOWTO (R_M32R_HI16_SLO, /* type */ 302 16, /* rightshift */ 303 2, /* size (0 = byte, 1 = short, 2 = long) */ 304 16, /* bitsize */ 305 FALSE, /* pc_relative */ 306 0, /* bitpos */ 307 complain_overflow_dont, /* complain_on_overflow */ 308 m32r_elf_hi16_reloc, /* special_function */ 309 "R_M32R_HI16_SLO", /* name */ 310 TRUE, /* partial_inplace */ 311 0x0000ffff, /* src_mask */ 312 0x0000ffff, /* dst_mask */ 313 FALSE), /* pcrel_offset */ 314 315 /* Lower 16 bits of address. */ 316 HOWTO (R_M32R_LO16, /* type */ 317 0, /* rightshift */ 318 2, /* size (0 = byte, 1 = short, 2 = long) */ 319 16, /* bitsize */ 320 FALSE, /* pc_relative */ 321 0, /* bitpos */ 322 complain_overflow_dont, /* complain_on_overflow */ 323 m32r_elf_lo16_reloc, /* special_function */ 324 "R_M32R_LO16", /* name */ 325 TRUE, /* partial_inplace */ 326 0x0000ffff, /* src_mask */ 327 0x0000ffff, /* dst_mask */ 328 FALSE), /* pcrel_offset */ 329 330 /* Small data area 16 bits offset. */ 331 HOWTO (R_M32R_SDA16, /* type */ 332 0, /* rightshift */ 333 2, /* size (0 = byte, 1 = short, 2 = long) */ 334 16, /* bitsize */ 335 FALSE, /* pc_relative */ 336 0, /* bitpos */ 337 complain_overflow_signed, /* complain_on_overflow */ 338 m32r_elf_sda16_reloc, /* special_function */ 339 "R_M32R_SDA16", /* name */ 340 TRUE, /* partial_inplace */ /* FIXME: correct? */ 341 0x0000ffff, /* src_mask */ 342 0x0000ffff, /* dst_mask */ 343 FALSE), /* pcrel_offset */ 344 345 /* GNU extension to record C++ vtable hierarchy */ 346 HOWTO (R_M32R_GNU_VTINHERIT, /* type */ 347 0, /* rightshift */ 348 2, /* size (0 = byte, 1 = short, 2 = long) */ 349 0, /* bitsize */ 350 FALSE, /* pc_relative */ 351 0, /* bitpos */ 352 complain_overflow_dont, /* complain_on_overflow */ 353 NULL, /* special_function */ 354 "R_M32R_GNU_VTINHERIT", /* name */ 355 FALSE, /* partial_inplace */ 356 0, /* src_mask */ 357 0, /* dst_mask */ 358 FALSE), /* pcrel_offset */ 359 360 /* GNU extension to record C++ vtable member usage */ 361 HOWTO (R_M32R_GNU_VTENTRY, /* type */ 362 0, /* rightshift */ 363 2, /* size (0 = byte, 1 = short, 2 = long) */ 364 0, /* bitsize */ 365 FALSE, /* pc_relative */ 366 0, /* bitpos */ 367 complain_overflow_dont, /* complain_on_overflow */ 368 _bfd_elf_rel_vtable_reloc_fn, /* special_function */ 369 "R_M32R_GNU_VTENTRY", /* name */ 370 FALSE, /* partial_inplace */ 371 0, /* src_mask */ 372 0, /* dst_mask */ 373 FALSE), /* pcrel_offset */ 374 375 EMPTY_HOWTO (13), 376 EMPTY_HOWTO (14), 377 EMPTY_HOWTO (15), 378 EMPTY_HOWTO (16), 379 EMPTY_HOWTO (17), 380 EMPTY_HOWTO (18), 381 EMPTY_HOWTO (19), 382 EMPTY_HOWTO (20), 383 EMPTY_HOWTO (21), 384 EMPTY_HOWTO (22), 385 EMPTY_HOWTO (23), 386 EMPTY_HOWTO (24), 387 EMPTY_HOWTO (25), 388 EMPTY_HOWTO (26), 389 EMPTY_HOWTO (27), 390 EMPTY_HOWTO (28), 391 EMPTY_HOWTO (29), 392 EMPTY_HOWTO (30), 393 EMPTY_HOWTO (31), 394 EMPTY_HOWTO (32), 395 396 /* A 16 bit absolute relocation. */ 397 HOWTO (R_M32R_16_RELA, /* type */ 398 0, /* rightshift */ 399 1, /* size (0 = byte, 1 = short, 2 = long) */ 400 16, /* bitsize */ 401 FALSE, /* pc_relative */ 402 0, /* bitpos */ 403 complain_overflow_bitfield, /* complain_on_overflow */ 404 bfd_elf_generic_reloc, /* special_function */ 405 "R_M32R_16_RELA", /* name */ 406 FALSE, /* partial_inplace */ 407 0xffff, /* src_mask */ 408 0xffff, /* dst_mask */ 409 FALSE), /* pcrel_offset */ 410 411 /* A 32 bit absolute relocation. */ 412 HOWTO (R_M32R_32_RELA, /* type */ 413 0, /* rightshift */ 414 2, /* size (0 = byte, 1 = short, 2 = long) */ 415 32, /* bitsize */ 416 FALSE, /* pc_relative */ 417 0, /* bitpos */ 418 complain_overflow_bitfield, /* complain_on_overflow */ 419 bfd_elf_generic_reloc,/* special_function */ 420 "R_M32R_32_RELA", /* name */ 421 FALSE, /* partial_inplace */ 422 0xffffffff, /* src_mask */ 423 0xffffffff, /* dst_mask */ 424 FALSE), /* pcrel_offset */ 425 426 /* A 24 bit address. */ 427 HOWTO (R_M32R_24_RELA, /* type */ 428 0, /* rightshift */ 429 2, /* size (0 = byte, 1 = short, 2 = long) */ 430 24, /* bitsize */ 431 FALSE, /* pc_relative */ 432 0, /* bitpos */ 433 complain_overflow_unsigned, /* complain_on_overflow */ 434 bfd_elf_generic_reloc,/* special_function */ 435 "R_M32R_24_RELA", /* name */ 436 FALSE, /* partial_inplace */ 437 0xffffff, /* src_mask */ 438 0xffffff, /* dst_mask */ 439 FALSE), /* pcrel_offset */ 440 441 HOWTO (R_M32R_10_PCREL_RELA, /* type */ 442 2, /* rightshift */ 443 1, /* size (0 = byte, 1 = short, 2 = long) */ 444 10, /* bitsize */ 445 TRUE, /* pc_relative */ 446 0, /* bitpos */ 447 complain_overflow_signed, /* complain_on_overflow */ 448 m32r_elf_10_pcrel_reloc, /* special_function */ 449 "R_M32R_10_PCREL_RELA",/* name */ 450 FALSE, /* partial_inplace */ 451 0xff, /* src_mask */ 452 0xff, /* dst_mask */ 453 TRUE), /* pcrel_offset */ 454 455 /* A relative 18 bit relocation, right shifted by 2. */ 456 HOWTO (R_M32R_18_PCREL_RELA, /* type */ 457 2, /* rightshift */ 458 2, /* size (0 = byte, 1 = short, 2 = long) */ 459 16, /* bitsize */ 460 TRUE, /* pc_relative */ 461 0, /* bitpos */ 462 complain_overflow_signed, /* complain_on_overflow */ 463 bfd_elf_generic_reloc, /* special_function */ 464 "R_M32R_18_PCREL_RELA",/* name */ 465 FALSE, /* partial_inplace */ 466 0xffff, /* src_mask */ 467 0xffff, /* dst_mask */ 468 TRUE), /* pcrel_offset */ 469 470 /* A relative 26 bit relocation, right shifted by 2. */ 471 HOWTO (R_M32R_26_PCREL_RELA, /* type */ 472 2, /* rightshift */ 473 2, /* size (0 = byte, 1 = short, 2 = long) */ 474 26, /* bitsize */ 475 TRUE, /* pc_relative */ 476 0, /* bitpos */ 477 complain_overflow_signed, /* complain_on_overflow */ 478 bfd_elf_generic_reloc, /* special_function */ 479 "R_M32R_26_PCREL_RELA",/* name */ 480 FALSE, /* partial_inplace */ 481 0xffffff, /* src_mask */ 482 0xffffff, /* dst_mask */ 483 TRUE), /* pcrel_offset */ 484 485 /* High 16 bits of address when lower 16 is or'd in. */ 486 HOWTO (R_M32R_HI16_ULO_RELA, /* type */ 487 16, /* rightshift */ 488 2, /* size (0 = byte, 1 = short, 2 = long) */ 489 16, /* bitsize */ 490 FALSE, /* pc_relative */ 491 0, /* bitpos */ 492 complain_overflow_dont, /* complain_on_overflow */ 493 bfd_elf_generic_reloc, /* special_function */ 494 "R_M32R_HI16_ULO_RELA",/* name */ 495 FALSE, /* partial_inplace */ 496 0x0000ffff, /* src_mask */ 497 0x0000ffff, /* dst_mask */ 498 FALSE), /* pcrel_offset */ 499 500 /* High 16 bits of address when lower 16 is added in. */ 501 HOWTO (R_M32R_HI16_SLO_RELA, /* type */ 502 16, /* rightshift */ 503 2, /* size (0 = byte, 1 = short, 2 = long) */ 504 16, /* bitsize */ 505 FALSE, /* pc_relative */ 506 0, /* bitpos */ 507 complain_overflow_dont, /* complain_on_overflow */ 508 bfd_elf_generic_reloc, /* special_function */ 509 "R_M32R_HI16_SLO_RELA",/* name */ 510 FALSE, /* partial_inplace */ 511 0x0000ffff, /* src_mask */ 512 0x0000ffff, /* dst_mask */ 513 FALSE), /* pcrel_offset */ 514 515 /* Lower 16 bits of address. */ 516 HOWTO (R_M32R_LO16_RELA, /* type */ 517 0, /* rightshift */ 518 2, /* size (0 = byte, 1 = short, 2 = long) */ 519 16, /* bitsize */ 520 FALSE, /* pc_relative */ 521 0, /* bitpos */ 522 complain_overflow_dont, /* complain_on_overflow */ 523 bfd_elf_generic_reloc, /* special_function */ 524 "R_M32R_LO16_RELA", /* name */ 525 FALSE, /* partial_inplace */ 526 0x0000ffff, /* src_mask */ 527 0x0000ffff, /* dst_mask */ 528 FALSE), /* pcrel_offset */ 529 530 /* Small data area 16 bits offset. */ 531 HOWTO (R_M32R_SDA16_RELA, /* type */ 532 0, /* rightshift */ 533 2, /* size (0 = byte, 1 = short, 2 = long) */ 534 16, /* bitsize */ 535 FALSE, /* pc_relative */ 536 0, /* bitpos */ 537 complain_overflow_signed, /* complain_on_overflow */ 538 bfd_elf_generic_reloc, /* special_function */ 539 "R_M32R_SDA16_RELA", /* name */ 540 TRUE, /* partial_inplace */ /* FIXME: correct? */ 541 0x0000ffff, /* src_mask */ 542 0x0000ffff, /* dst_mask */ 543 FALSE), /* pcrel_offset */ 544 545 /* GNU extension to record C++ vtable hierarchy */ 546 HOWTO (R_M32R_RELA_GNU_VTINHERIT, /* type */ 547 0, /* rightshift */ 548 2, /* size (0 = byte, 1 = short, 2 = long) */ 549 0, /* bitsize */ 550 FALSE, /* pc_relative */ 551 0, /* bitpos */ 552 complain_overflow_dont, /* complain_on_overflow */ 553 NULL, /* special_function */ 554 "R_M32R_RELA_GNU_VTINHERIT", /* name */ 555 FALSE, /* partial_inplace */ 556 0, /* src_mask */ 557 0, /* dst_mask */ 558 FALSE), /* pcrel_offset */ 559 560 /* GNU extension to record C++ vtable member usage */ 561 HOWTO (R_M32R_RELA_GNU_VTENTRY, /* type */ 562 0, /* rightshift */ 563 2, /* size (0 = byte, 1 = short, 2 = long) */ 564 0, /* bitsize */ 565 FALSE, /* pc_relative */ 566 0, /* bitpos */ 567 complain_overflow_dont, /* complain_on_overflow */ 568 _bfd_elf_rel_vtable_reloc_fn, /* special_function */ 569 "R_M32R_RELA_GNU_VTENTRY", /* name */ 570 FALSE, /* partial_inplace */ 571 0, /* src_mask */ 572 0, /* dst_mask */ 573 FALSE), /* pcrel_offset */ 574 575 EMPTY_HOWTO (45), 576 EMPTY_HOWTO (46), 577 EMPTY_HOWTO (47), 578 579 /* Like R_M32R_24, but referring to the GOT table entry for 580 the symbol. */ 581 HOWTO (R_M32R_GOT24, /* type */ 582 0, /* rightshift */ 583 2, /* size (0 = byte, 1 = short, 2 = long) */ 584 24, /* bitsize */ 585 FALSE, /* pc_relative */ 586 0, /* bitpos */ 587 complain_overflow_unsigned, /* complain_on_overflow */ 588 bfd_elf_generic_reloc, /* special_function */ 589 "R_M32R_GOT24", /* name */ 590 FALSE, /* partial_inplace */ 591 0xffffff, /* src_mask */ 592 0xffffff, /* dst_mask */ 593 FALSE), /* pcrel_offset */ 594 595 /* Like R_M32R_PCREL, but referring to the procedure linkage table 596 entry for the symbol. */ 597 HOWTO (R_M32R_26_PLTREL, /* type */ 598 2, /* rightshift */ 599 2, /* size (0 = byte, 1 = short, 2 = long) */ 600 24, /* bitsize */ 601 TRUE, /* pc_relative */ 602 0, /* bitpos */ 603 complain_overflow_signed, /* complain_on_overflow */ 604 bfd_elf_generic_reloc, /* special_function */ 605 "R_M32R_26_PLTREL", /* name */ 606 FALSE, /* partial_inplace */ 607 0xffffff, /* src_mask */ 608 0xffffff, /* dst_mask */ 609 TRUE), /* pcrel_offset */ 610 611 /* This is used only by the dynamic linker. The symbol should exist 612 both in the object being run and in some shared library. The 613 dynamic linker copies the data addressed by the symbol from the 614 shared library into the object, because the object being 615 run has to have the data at some particular address. */ 616 HOWTO (R_M32R_COPY, /* type */ 617 0, /* rightshift */ 618 2, /* size (0 = byte, 1 = short, 2 = long) */ 619 32, /* bitsize */ 620 FALSE, /* pc_relative */ 621 0, /* bitpos */ 622 complain_overflow_bitfield, /* complain_on_overflow */ 623 bfd_elf_generic_reloc, /* special_function */ 624 "R_M32R_COPY", /* name */ 625 FALSE, /* partial_inplace */ 626 0xffffffff, /* src_mask */ 627 0xffffffff, /* dst_mask */ 628 FALSE), /* pcrel_offset */ 629 630 /* Like R_M32R_24, but used when setting global offset table 631 entries. */ 632 HOWTO (R_M32R_GLOB_DAT, /* type */ 633 0, /* rightshift */ 634 2, /* size (0 = byte, 1 = short, 2 = long) */ 635 32, /* bitsize */ 636 FALSE, /* pc_relative */ 637 0, /* bitpos */ 638 complain_overflow_bitfield, /* complain_on_overflow */ 639 bfd_elf_generic_reloc, /* special_function */ 640 "R_M32R_GLOB_DAT", /* name */ 641 FALSE, /* partial_inplace */ 642 0xffffffff, /* src_mask */ 643 0xffffffff, /* dst_mask */ 644 FALSE), /* pcrel_offset */ 645 646 /* Marks a procedure linkage table entry for a symbol. */ 647 HOWTO (R_M32R_JMP_SLOT, /* type */ 648 0, /* rightshift */ 649 2, /* size (0 = byte, 1 = short, 2 = long) */ 650 32, /* bitsize */ 651 FALSE, /* pc_relative */ 652 0, /* bitpos */ 653 complain_overflow_bitfield, /* complain_on_overflow */ 654 bfd_elf_generic_reloc, /* special_function */ 655 "R_M32R_JMP_SLOT", /* name */ 656 FALSE, /* partial_inplace */ 657 0xffffffff, /* src_mask */ 658 0xffffffff, /* dst_mask */ 659 FALSE), /* pcrel_offset */ 660 661 /* Used only by the dynamic linker. When the object is run, this 662 longword is set to the load address of the object, plus the 663 addend. */ 664 HOWTO (R_M32R_RELATIVE, /* type */ 665 0, /* rightshift */ 666 2, /* size (0 = byte, 1 = short, 2 = long) */ 667 32, /* bitsize */ 668 FALSE, /* pc_relative */ 669 0, /* bitpos */ 670 complain_overflow_bitfield, /* complain_on_overflow */ 671 bfd_elf_generic_reloc, /* special_function */ 672 "R_M32R_RELATIVE", /* name */ 673 FALSE, /* partial_inplace */ 674 0xffffffff, /* src_mask */ 675 0xffffffff, /* dst_mask */ 676 FALSE), /* pcrel_offset */ 677 678 HOWTO (R_M32R_GOTOFF, /* type */ 679 0, /* rightshift */ 680 2, /* size (0 = byte, 1 = short, 2 = long) */ 681 32, /* bitsize */ 682 FALSE, /* pc_relative */ 683 0, /* bitpos */ 684 complain_overflow_bitfield, /* complain_on_overflow */ 685 bfd_elf_generic_reloc, /* special_function */ 686 "R_M32R_GOTOFF", /* name */ 687 FALSE, /* partial_inplace */ 688 0xffffffff, /* src_mask */ 689 0xffffffff, /* dst_mask */ 690 FALSE), /* pcrel_offset */ 691 692 /* An PC Relative 24-bit relocation used when setting PIC offset 693 table register. */ 694 HOWTO (R_M32R_GOTPC24, /* type */ 695 0, /* rightshift */ 696 2, /* size (0 = byte, 1 = short, 2 = long) */ 697 24, /* bitsize */ 698 TRUE, /* pc_relative */ 699 0, /* bitpos */ 700 complain_overflow_unsigned, /* complain_on_overflow */ 701 bfd_elf_generic_reloc, /* special_function */ 702 "R_M32R_GOTPC24", /* name */ 703 FALSE, /* partial_inplace */ 704 0xffffff, /* src_mask */ 705 0xffffff, /* dst_mask */ 706 TRUE), /* pcrel_offset */ 707 708 /* Like R_M32R_HI16_ULO, but referring to the GOT table entry for 709 the symbol. */ 710 HOWTO (R_M32R_GOT16_HI_ULO, /* type */ 711 16, /* rightshift */ 712 2, /* size (0 = byte, 1 = short, 2 = long) */ 713 16, /* bitsize */ 714 FALSE, /* pc_relative */ 715 0, /* bitpos */ 716 complain_overflow_dont, /* complain_on_overflow */ 717 bfd_elf_generic_reloc, /* special_function */ 718 "R_M32R_GOT16_HI_ULO", /* name */ 719 FALSE, /* partial_inplace */ 720 0x0000ffff, /* src_mask */ 721 0x0000ffff, /* dst_mask */ 722 FALSE), /* pcrel_offset */ 723 724 /* Like R_M32R_HI16_SLO, but referring to the GOT table entry for 725 the symbol. */ 726 HOWTO (R_M32R_GOT16_HI_SLO, /* type */ 727 16, /* rightshift */ 728 2, /* size (0 = byte, 1 = short, 2 = long) */ 729 16, /* bitsize */ 730 FALSE, /* pc_relative */ 731 0, /* bitpos */ 732 complain_overflow_dont, /* complain_on_overflow */ 733 bfd_elf_generic_reloc, /* special_function */ 734 "R_M32R_GOT16_HI_SLO", /* name */ 735 FALSE, /* partial_inplace */ 736 0x0000ffff, /* src_mask */ 737 0x0000ffff, /* dst_mask */ 738 FALSE), /* pcrel_offset */ 739 740 /* Like R_M32R_LO16, but referring to the GOT table entry for 741 the symbol. */ 742 HOWTO (R_M32R_GOT16_LO, /* type */ 743 0, /* rightshift */ 744 2, /* size (0 = byte, 1 = short, 2 = long) */ 745 16, /* bitsize */ 746 FALSE, /* pc_relative */ 747 0, /* bitpos */ 748 complain_overflow_dont, /* complain_on_overflow */ 749 bfd_elf_generic_reloc, /* special_function */ 750 "R_M32R_GOT16_LO", /* name */ 751 FALSE, /* partial_inplace */ 752 0x0000ffff, /* src_mask */ 753 0x0000ffff, /* dst_mask */ 754 FALSE), /* pcrel_offset */ 755 756 /* An PC Relative relocation used when setting PIC offset table register. 757 Like R_M32R_HI16_ULO, but referring to the GOT table entry for 758 the symbol. */ 759 HOWTO (R_M32R_GOTPC_HI_ULO, /* type */ 760 16, /* rightshift */ 761 2, /* size (0 = byte, 1 = short, 2 = long) */ 762 16, /* bitsize */ 763 FALSE, /* pc_relative */ 764 0, /* bitpos */ 765 complain_overflow_dont, /* complain_on_overflow */ 766 bfd_elf_generic_reloc, /* special_function */ 767 "R_M32R_GOTPC_HI_ULO", /* name */ 768 FALSE, /* partial_inplace */ 769 0x0000ffff, /* src_mask */ 770 0x0000ffff, /* dst_mask */ 771 TRUE), /* pcrel_offset */ 772 773 /* An PC Relative relocation used when setting PIC offset table register. 774 Like R_M32R_HI16_SLO, but referring to the GOT table entry for 775 the symbol. */ 776 HOWTO (R_M32R_GOTPC_HI_SLO, /* type */ 777 16, /* rightshift */ 778 2, /* size (0 = byte, 1 = short, 2 = long) */ 779 16, /* bitsize */ 780 FALSE, /* pc_relative */ 781 0, /* bitpos */ 782 complain_overflow_dont, /* complain_on_overflow */ 783 bfd_elf_generic_reloc, /* special_function */ 784 "R_M32R_GOTPC_HI_SLO", /* name */ 785 FALSE, /* partial_inplace */ 786 0x0000ffff, /* src_mask */ 787 0x0000ffff, /* dst_mask */ 788 TRUE), /* pcrel_offset */ 789 790 /* An PC Relative relocation used when setting PIC offset table register. 791 Like R_M32R_LO16, but referring to the GOT table entry for 792 the symbol. */ 793 HOWTO (R_M32R_GOTPC_LO, /* type */ 794 0, /* rightshift */ 795 2, /* size (0 = byte, 1 = short, 2 = long) */ 796 16, /* bitsize */ 797 FALSE, /* pc_relative */ 798 0, /* bitpos */ 799 complain_overflow_dont, /* complain_on_overflow */ 800 bfd_elf_generic_reloc, /* special_function */ 801 "R_M32R_GOTPC_LO", /* name */ 802 FALSE, /* partial_inplace */ 803 0x0000ffff, /* src_mask */ 804 0x0000ffff, /* dst_mask */ 805 TRUE), /* pcrel_offset */ 806 }; 807 808 /* Handle the R_M32R_10_PCREL reloc. */ 809 810 static bfd_reloc_status_type 811 m32r_elf_10_pcrel_reloc (abfd, reloc_entry, symbol, data, 812 input_section, output_bfd, error_message) 813 bfd * abfd; 814 arelent * reloc_entry; 815 asymbol * symbol; 816 PTR data; 817 asection * input_section; 818 bfd * output_bfd; 819 char ** error_message ATTRIBUTE_UNUSED; 820 { 821 /* This part is from bfd_elf_generic_reloc. */ 822 if (output_bfd != (bfd *) NULL 823 && (symbol->flags & BSF_SECTION_SYM) == 0 824 && (! reloc_entry->howto->partial_inplace 825 || reloc_entry->addend == 0)) 826 { 827 reloc_entry->address += input_section->output_offset; 828 return bfd_reloc_ok; 829 } 830 831 if (output_bfd != NULL) 832 { 833 /* FIXME: See bfd_perform_relocation. Is this right? */ 834 return bfd_reloc_continue; 835 } 836 837 return m32r_elf_do_10_pcrel_reloc (abfd, reloc_entry->howto, 838 input_section, 839 data, reloc_entry->address, 840 symbol->section, 841 (symbol->value 842 + symbol->section->output_section->vma 843 + symbol->section->output_offset), 844 reloc_entry->addend); 845 } 846 847 /* Utility to actually perform an R_M32R_10_PCREL reloc. */ 848 849 static bfd_reloc_status_type 850 m32r_elf_do_10_pcrel_reloc (abfd, howto, input_section, data, offset, 851 symbol_section, symbol_value, addend) 852 bfd *abfd; 853 reloc_howto_type *howto; 854 asection *input_section; 855 bfd_byte *data; 856 bfd_vma offset; 857 asection *symbol_section ATTRIBUTE_UNUSED; 858 bfd_vma symbol_value; 859 bfd_vma addend; 860 { 861 bfd_signed_vma relocation; 862 unsigned long x; 863 bfd_reloc_status_type status; 864 865 /* Sanity check the address (offset in section). */ 866 if (offset > input_section->_cooked_size) 867 return bfd_reloc_outofrange; 868 869 relocation = symbol_value + addend; 870 /* Make it pc relative. */ 871 relocation -= (input_section->output_section->vma 872 + input_section->output_offset); 873 /* These jumps mask off the lower two bits of the current address 874 before doing pcrel calculations. */ 875 relocation -= (offset & -(bfd_vma) 4); 876 877 if (relocation < -0x200 || relocation > 0x1ff) 878 status = bfd_reloc_overflow; 879 else 880 status = bfd_reloc_ok; 881 882 x = bfd_get_16 (abfd, data + offset); 883 relocation >>= howto->rightshift; 884 relocation <<= howto->bitpos; 885 x = (x & ~howto->dst_mask) | (((x & howto->src_mask) + relocation) & howto->dst_mask); 886 bfd_put_16 (abfd, (bfd_vma) x, data + offset); 887 888 return status; 889 } 890 891 /* Handle the R_M32R_HI16_[SU]LO relocs. 892 HI16_SLO is for the add3 and load/store with displacement instructions. 893 HI16_ULO is for the or3 instruction. 894 For R_M32R_HI16_SLO, the lower 16 bits are sign extended when added to 895 the high 16 bytes so if the lower 16 bits are negative (bit 15 == 1) then 896 we must add one to the high 16 bytes (which will get subtracted off when 897 the low 16 bits are added). 898 These relocs have to be done in combination with an R_M32R_LO16 reloc 899 because there is a carry from the LO16 to the HI16. Here we just save 900 the information we need; we do the actual relocation when we see the LO16. 901 This code is copied from the elf32-mips.c. We also support an arbitrary 902 number of HI16 relocs to be associated with a single LO16 reloc. The 903 assembler sorts the relocs to ensure each HI16 immediately precedes its 904 LO16. However if there are multiple copies, the assembler may not find 905 the real LO16 so it picks the first one it finds. */ 906 907 struct m32r_hi16 908 { 909 struct m32r_hi16 *next; 910 bfd_byte *addr; 911 bfd_vma addend; 912 }; 913 914 /* FIXME: This should not be a static variable. */ 915 916 static struct m32r_hi16 *m32r_hi16_list; 917 918 static bfd_reloc_status_type 919 m32r_elf_hi16_reloc (abfd, reloc_entry, symbol, data, 920 input_section, output_bfd, error_message) 921 bfd *abfd ATTRIBUTE_UNUSED; 922 arelent *reloc_entry; 923 asymbol *symbol; 924 PTR data; 925 asection *input_section; 926 bfd *output_bfd; 927 char **error_message ATTRIBUTE_UNUSED; 928 { 929 bfd_reloc_status_type ret; 930 bfd_vma relocation; 931 struct m32r_hi16 *n; 932 933 /* This part is from bfd_elf_generic_reloc. 934 If we're relocating, and this an external symbol, we don't want 935 to change anything. */ 936 if (output_bfd != (bfd *) NULL 937 && (symbol->flags & BSF_SECTION_SYM) == 0 938 && reloc_entry->addend == 0) 939 { 940 reloc_entry->address += input_section->output_offset; 941 return bfd_reloc_ok; 942 } 943 944 /* Sanity check the address (offset in section). */ 945 if (reloc_entry->address > input_section->_cooked_size) 946 return bfd_reloc_outofrange; 947 948 ret = bfd_reloc_ok; 949 if (bfd_is_und_section (symbol->section) 950 && output_bfd == (bfd *) NULL) 951 ret = bfd_reloc_undefined; 952 953 if (bfd_is_com_section (symbol->section)) 954 relocation = 0; 955 else 956 relocation = symbol->value; 957 958 relocation += symbol->section->output_section->vma; 959 relocation += symbol->section->output_offset; 960 relocation += reloc_entry->addend; 961 962 /* Save the information, and let LO16 do the actual relocation. */ 963 n = (struct m32r_hi16 *) bfd_malloc ((bfd_size_type) sizeof *n); 964 if (n == NULL) 965 return bfd_reloc_outofrange; 966 n->addr = (bfd_byte *) data + reloc_entry->address; 967 n->addend = relocation; 968 n->next = m32r_hi16_list; 969 m32r_hi16_list = n; 970 971 if (output_bfd != (bfd *) NULL) 972 reloc_entry->address += input_section->output_offset; 973 974 return ret; 975 } 976 977 /* Handle an M32R ELF HI16 reloc. */ 978 979 static void 980 m32r_elf_relocate_hi16 (input_bfd, type, relhi, rello, contents, addend) 981 bfd *input_bfd; 982 int type; 983 Elf_Internal_Rela *relhi; 984 Elf_Internal_Rela *rello; 985 bfd_byte *contents; 986 bfd_vma addend; 987 { 988 unsigned long insn; 989 bfd_vma addlo; 990 991 insn = bfd_get_32 (input_bfd, contents + relhi->r_offset); 992 993 addlo = bfd_get_32 (input_bfd, contents + rello->r_offset); 994 if (type == R_M32R_HI16_SLO) 995 addlo = ((addlo & 0xffff) ^ 0x8000) - 0x8000; 996 else 997 addlo &= 0xffff; 998 999 addend += ((insn & 0xffff) << 16) + addlo; 1000 1001 /* Reaccount for sign extension of low part. */ 1002 if (type == R_M32R_HI16_SLO 1003 && (addend & 0x8000) != 0) 1004 addend += 0x10000; 1005 1006 bfd_put_32 (input_bfd, 1007 (insn & 0xffff0000) | ((addend >> 16) & 0xffff), 1008 contents + relhi->r_offset); 1009 } 1010 1011 /* Do an R_M32R_LO16 relocation. This is a straightforward 16 bit 1012 inplace relocation; this function exists in order to do the 1013 R_M32R_HI16_[SU]LO relocation described above. */ 1014 1015 bfd_reloc_status_type 1016 m32r_elf_lo16_reloc (input_bfd, reloc_entry, symbol, data, 1017 input_section, output_bfd, error_message) 1018 bfd *input_bfd; 1019 arelent *reloc_entry; 1020 asymbol *symbol; 1021 PTR data; 1022 asection *input_section; 1023 bfd *output_bfd; 1024 char **error_message; 1025 { 1026 /* This part is from bfd_elf_generic_reloc. 1027 If we're relocating, and this an external symbol, we don't want 1028 to change anything. */ 1029 if (output_bfd != (bfd *) NULL 1030 && (symbol->flags & BSF_SECTION_SYM) == 0 1031 && reloc_entry->addend == 0) 1032 { 1033 reloc_entry->address += input_section->output_offset; 1034 return bfd_reloc_ok; 1035 } 1036 1037 if (m32r_hi16_list != NULL) 1038 { 1039 struct m32r_hi16 *l; 1040 1041 l = m32r_hi16_list; 1042 while (l != NULL) 1043 { 1044 unsigned long insn; 1045 unsigned long val; 1046 unsigned long vallo; 1047 struct m32r_hi16 *next; 1048 1049 /* Do the HI16 relocation. Note that we actually don't need 1050 to know anything about the LO16 itself, except where to 1051 find the low 16 bits of the addend needed by the LO16. */ 1052 insn = bfd_get_32 (input_bfd, l->addr); 1053 vallo = ((bfd_get_32 (input_bfd, (bfd_byte *) data + reloc_entry->address) 1054 & 0xffff) ^ 0x8000) - 0x8000; 1055 val = ((insn & 0xffff) << 16) + vallo; 1056 val += l->addend; 1057 1058 /* Reaccount for sign extension of low part. */ 1059 if ((val & 0x8000) != 0) 1060 val += 0x10000; 1061 1062 insn = (insn &~ (bfd_vma) 0xffff) | ((val >> 16) & 0xffff); 1063 bfd_put_32 (input_bfd, (bfd_vma) insn, l->addr); 1064 1065 next = l->next; 1066 free (l); 1067 l = next; 1068 } 1069 1070 m32r_hi16_list = NULL; 1071 } 1072 1073 /* Now do the LO16 reloc in the usual way. 1074 ??? It would be nice to call bfd_elf_generic_reloc here, 1075 but we have partial_inplace set. bfd_elf_generic_reloc will 1076 pass the handling back to bfd_install_relocation which will install 1077 a section relative addend which is wrong. */ 1078 return m32r_elf_generic_reloc (input_bfd, reloc_entry, symbol, data, 1079 input_section, output_bfd, error_message); 1080 } 1081 1082 /* Do generic partial_inplace relocation. 1083 This is a local replacement for bfd_elf_generic_reloc. */ 1084 1085 bfd_reloc_status_type 1086 m32r_elf_generic_reloc (input_bfd, reloc_entry, symbol, data, 1087 input_section, output_bfd, error_message) 1088 bfd *input_bfd; 1089 arelent *reloc_entry; 1090 asymbol *symbol; 1091 PTR data; 1092 asection *input_section; 1093 bfd *output_bfd; 1094 char **error_message ATTRIBUTE_UNUSED; 1095 { 1096 bfd_reloc_status_type ret; 1097 bfd_vma relocation; 1098 bfd_byte *inplace_address; 1099 1100 /* This part is from bfd_elf_generic_reloc. 1101 If we're relocating, and this an external symbol, we don't want 1102 to change anything. */ 1103 if (output_bfd != (bfd *) NULL 1104 && (symbol->flags & BSF_SECTION_SYM) == 0 1105 && reloc_entry->addend == 0) 1106 { 1107 reloc_entry->address += input_section->output_offset; 1108 return bfd_reloc_ok; 1109 } 1110 1111 /* Now do the reloc in the usual way. 1112 ??? It would be nice to call bfd_elf_generic_reloc here, 1113 but we have partial_inplace set. bfd_elf_generic_reloc will 1114 pass the handling back to bfd_install_relocation which will install 1115 a section relative addend which is wrong. */ 1116 1117 /* Sanity check the address (offset in section). */ 1118 if (reloc_entry->address > input_section->_cooked_size) 1119 return bfd_reloc_outofrange; 1120 1121 ret = bfd_reloc_ok; 1122 if (bfd_is_und_section (symbol->section) 1123 && output_bfd == (bfd *) NULL) 1124 ret = bfd_reloc_undefined; 1125 1126 if (bfd_is_com_section (symbol->section) 1127 || output_bfd != (bfd *) NULL) 1128 relocation = 0; 1129 else 1130 relocation = symbol->value; 1131 1132 /* Only do this for a final link. */ 1133 if (output_bfd == (bfd *) NULL) 1134 { 1135 relocation += symbol->section->output_section->vma; 1136 relocation += symbol->section->output_offset; 1137 } 1138 1139 relocation += reloc_entry->addend; 1140 inplace_address = (bfd_byte *) data + reloc_entry->address; 1141 1142 #define DOIT(x) \ 1143 x = ( (x & ~reloc_entry->howto->dst_mask) | \ 1144 (((x & reloc_entry->howto->src_mask) + relocation) & \ 1145 reloc_entry->howto->dst_mask)) 1146 1147 switch (reloc_entry->howto->size) 1148 { 1149 case 1: 1150 { 1151 short x = bfd_get_16 (input_bfd, inplace_address); 1152 DOIT (x); 1153 bfd_put_16 (input_bfd, (bfd_vma) x, inplace_address); 1154 } 1155 break; 1156 case 2: 1157 { 1158 unsigned long x = bfd_get_32 (input_bfd, inplace_address); 1159 DOIT (x); 1160 bfd_put_32 (input_bfd, (bfd_vma)x , inplace_address); 1161 } 1162 break; 1163 default: 1164 BFD_ASSERT (0); 1165 } 1166 1167 if (output_bfd != (bfd *) NULL) 1168 reloc_entry->address += input_section->output_offset; 1169 1170 return ret; 1171 } 1172 1173 /* Handle the R_M32R_SDA16 reloc. 1174 This reloc is used to compute the address of objects in the small data area 1175 and to perform loads and stores from that area. 1176 The lower 16 bits are sign extended and added to the register specified 1177 in the instruction, which is assumed to point to _SDA_BASE_. */ 1178 1179 static bfd_reloc_status_type 1180 m32r_elf_sda16_reloc (abfd, reloc_entry, symbol, data, 1181 input_section, output_bfd, error_message) 1182 bfd *abfd ATTRIBUTE_UNUSED; 1183 arelent *reloc_entry; 1184 asymbol *symbol; 1185 PTR data ATTRIBUTE_UNUSED; 1186 asection *input_section; 1187 bfd *output_bfd; 1188 char **error_message ATTRIBUTE_UNUSED; 1189 { 1190 /* This part is from bfd_elf_generic_reloc. */ 1191 if (output_bfd != (bfd *) NULL 1192 && (symbol->flags & BSF_SECTION_SYM) == 0 1193 && (! reloc_entry->howto->partial_inplace 1194 || reloc_entry->addend == 0)) 1195 { 1196 reloc_entry->address += input_section->output_offset; 1197 return bfd_reloc_ok; 1198 } 1199 1200 if (output_bfd != NULL) 1201 { 1202 /* FIXME: See bfd_perform_relocation. Is this right? */ 1203 return bfd_reloc_continue; 1204 } 1205 1206 /* FIXME: not sure what to do here yet. But then again, the linker 1207 may never call us. */ 1208 abort (); 1209 } 1210 1211 /* Map BFD reloc types to M32R ELF reloc types. */ 1212 1213 struct m32r_reloc_map 1214 { 1215 bfd_reloc_code_real_type bfd_reloc_val; 1216 unsigned char elf_reloc_val; 1217 }; 1218 1219 static const struct m32r_reloc_map m32r_reloc_map_old[] = 1220 { 1221 { BFD_RELOC_NONE, R_M32R_NONE }, 1222 { BFD_RELOC_16, R_M32R_16 }, 1223 { BFD_RELOC_32, R_M32R_32 }, 1224 { BFD_RELOC_M32R_24, R_M32R_24 }, 1225 { BFD_RELOC_M32R_10_PCREL, R_M32R_10_PCREL }, 1226 { BFD_RELOC_M32R_18_PCREL, R_M32R_18_PCREL }, 1227 { BFD_RELOC_M32R_26_PCREL, R_M32R_26_PCREL }, 1228 { BFD_RELOC_M32R_HI16_ULO, R_M32R_HI16_ULO }, 1229 { BFD_RELOC_M32R_HI16_SLO, R_M32R_HI16_SLO }, 1230 { BFD_RELOC_M32R_LO16, R_M32R_LO16 }, 1231 { BFD_RELOC_M32R_SDA16, R_M32R_SDA16 }, 1232 { BFD_RELOC_VTABLE_INHERIT, R_M32R_GNU_VTINHERIT }, 1233 { BFD_RELOC_VTABLE_ENTRY, R_M32R_GNU_VTENTRY }, 1234 }; 1235 1236 static const struct m32r_reloc_map m32r_reloc_map[] = 1237 { 1238 { BFD_RELOC_NONE, R_M32R_NONE }, 1239 { BFD_RELOC_16, R_M32R_16_RELA }, 1240 { BFD_RELOC_32, R_M32R_32_RELA }, 1241 { BFD_RELOC_M32R_24, R_M32R_24_RELA }, 1242 { BFD_RELOC_M32R_10_PCREL, R_M32R_10_PCREL_RELA }, 1243 { BFD_RELOC_M32R_18_PCREL, R_M32R_18_PCREL_RELA }, 1244 { BFD_RELOC_M32R_26_PCREL, R_M32R_26_PCREL_RELA }, 1245 { BFD_RELOC_M32R_HI16_ULO, R_M32R_HI16_ULO_RELA }, 1246 { BFD_RELOC_M32R_HI16_SLO, R_M32R_HI16_SLO_RELA }, 1247 { BFD_RELOC_M32R_LO16, R_M32R_LO16_RELA }, 1248 { BFD_RELOC_M32R_SDA16, R_M32R_SDA16_RELA }, 1249 { BFD_RELOC_VTABLE_INHERIT, R_M32R_RELA_GNU_VTINHERIT }, 1250 { BFD_RELOC_VTABLE_ENTRY, R_M32R_RELA_GNU_VTENTRY }, 1251 1252 { BFD_RELOC_M32R_GOT24, R_M32R_GOT24 }, 1253 { BFD_RELOC_M32R_26_PLTREL, R_M32R_26_PLTREL }, 1254 { BFD_RELOC_M32R_COPY, R_M32R_COPY }, 1255 { BFD_RELOC_M32R_GLOB_DAT, R_M32R_GLOB_DAT }, 1256 { BFD_RELOC_M32R_JMP_SLOT, R_M32R_JMP_SLOT }, 1257 { BFD_RELOC_M32R_RELATIVE, R_M32R_RELATIVE }, 1258 { BFD_RELOC_M32R_GOTOFF, R_M32R_GOTOFF }, 1259 { BFD_RELOC_M32R_GOTPC24, R_M32R_GOTPC24 }, 1260 { BFD_RELOC_M32R_GOT16_HI_ULO, R_M32R_GOT16_HI_ULO }, 1261 { BFD_RELOC_M32R_GOT16_HI_SLO, R_M32R_GOT16_HI_SLO }, 1262 { BFD_RELOC_M32R_GOT16_LO, R_M32R_GOT16_LO }, 1263 { BFD_RELOC_M32R_GOTPC_HI_ULO, R_M32R_GOTPC_HI_ULO }, 1264 { BFD_RELOC_M32R_GOTPC_HI_SLO, R_M32R_GOTPC_HI_SLO }, 1265 { BFD_RELOC_M32R_GOTPC_LO, R_M32R_GOTPC_LO }, 1266 }; 1267 1268 static reloc_howto_type * 1269 bfd_elf32_bfd_reloc_type_lookup (abfd, code) 1270 bfd *abfd ATTRIBUTE_UNUSED; 1271 bfd_reloc_code_real_type code; 1272 { 1273 unsigned int i; 1274 1275 #ifdef USE_M32R_OLD_RELOC 1276 for (i = 0; 1277 i < sizeof (m32r_reloc_map_old) / sizeof (struct m32r_reloc_map); 1278 i++) 1279 { 1280 if (m32r_reloc_map_old[i].bfd_reloc_val == code) 1281 return &m32r_elf_howto_table[m32r_reloc_map_old[i].elf_reloc_val]; 1282 } 1283 #else /* ! USE_M32R_OLD_RELOC */ 1284 1285 for (i = 0; 1286 i < sizeof (m32r_reloc_map) / sizeof (struct m32r_reloc_map); 1287 i++) 1288 { 1289 if (m32r_reloc_map[i].bfd_reloc_val == code) 1290 return &m32r_elf_howto_table[m32r_reloc_map[i].elf_reloc_val]; 1291 } 1292 #endif 1293 1294 return NULL; 1295 } 1296 1297 /* Set the howto pointer for an M32R ELF reloc. */ 1298 1299 static void 1300 m32r_info_to_howto_rel (abfd, cache_ptr, dst) 1301 bfd *abfd ATTRIBUTE_UNUSED; 1302 arelent *cache_ptr; 1303 Elf_Internal_Rela *dst; 1304 { 1305 unsigned int r_type; 1306 1307 r_type = ELF32_R_TYPE (dst->r_info); 1308 BFD_ASSERT (ELF32_R_TYPE(dst->r_info) <= (unsigned int) R_M32R_GNU_VTENTRY) 1309 cache_ptr->howto = &m32r_elf_howto_table[r_type]; 1310 } 1311 1312 static void 1313 m32r_info_to_howto (abfd, cache_ptr, dst) 1314 bfd *abfd ATTRIBUTE_UNUSED; 1315 arelent *cache_ptr; 1316 Elf_Internal_Rela *dst; 1317 { 1318 BFD_ASSERT ((ELF32_R_TYPE(dst->r_info) == (unsigned int) R_M32R_NONE) 1319 || ((ELF32_R_TYPE(dst->r_info) > (unsigned int) R_M32R_GNU_VTENTRY) 1320 && (ELF32_R_TYPE(dst->r_info) < (unsigned int) R_M32R_max))); 1321 cache_ptr->howto = &m32r_elf_howto_table[ELF32_R_TYPE(dst->r_info)]; 1322 } 1323 1324 1325 /* Given a BFD section, try to locate the corresponding ELF section 1326 index. */ 1327 1328 bfd_boolean 1329 _bfd_m32r_elf_section_from_bfd_section (abfd, sec, retval) 1330 bfd *abfd ATTRIBUTE_UNUSED; 1331 asection *sec; 1332 int *retval; 1333 { 1334 if (strcmp (bfd_get_section_name (abfd, sec), ".scommon") == 0) 1335 { 1336 *retval = SHN_M32R_SCOMMON; 1337 return TRUE; 1338 } 1339 return FALSE; 1340 } 1341 1342 /* M32R ELF uses two common sections. One is the usual one, and the other 1343 is for small objects. All the small objects are kept together, and then 1344 referenced via one register, which yields faster assembler code. It is 1345 up to the compiler to emit an instruction to load the register with 1346 _SDA_BASE. This is what we use for the small common section. This 1347 approach is copied from elf32-mips.c. */ 1348 static asection m32r_elf_scom_section; 1349 static asymbol m32r_elf_scom_symbol; 1350 static asymbol *m32r_elf_scom_symbol_ptr; 1351 1352 /* Handle the special M32R section numbers that a symbol may use. */ 1353 1354 void 1355 _bfd_m32r_elf_symbol_processing (abfd, asym) 1356 bfd *abfd ATTRIBUTE_UNUSED; 1357 asymbol *asym; 1358 { 1359 elf_symbol_type *elfsym; 1360 1361 elfsym = (elf_symbol_type *) asym; 1362 1363 switch (elfsym->internal_elf_sym.st_shndx) 1364 { 1365 case SHN_M32R_SCOMMON: 1366 if (m32r_elf_scom_section.name == NULL) 1367 { 1368 /* Initialize the small common section. */ 1369 m32r_elf_scom_section.name = ".scommon"; 1370 m32r_elf_scom_section.flags = SEC_IS_COMMON; 1371 m32r_elf_scom_section.output_section = &m32r_elf_scom_section; 1372 m32r_elf_scom_section.symbol = &m32r_elf_scom_symbol; 1373 m32r_elf_scom_section.symbol_ptr_ptr = &m32r_elf_scom_symbol_ptr; 1374 m32r_elf_scom_symbol.name = ".scommon"; 1375 m32r_elf_scom_symbol.flags = BSF_SECTION_SYM; 1376 m32r_elf_scom_symbol.section = &m32r_elf_scom_section; 1377 m32r_elf_scom_symbol_ptr = &m32r_elf_scom_symbol; 1378 } 1379 asym->section = &m32r_elf_scom_section; 1380 asym->value = elfsym->internal_elf_sym.st_size; 1381 break; 1382 } 1383 } 1384 1385 /* Hook called by the linker routine which adds symbols from an object 1386 file. We must handle the special M32R section numbers here. 1387 We also keep watching for whether we need to create the sdata special 1388 linker sections. */ 1389 1390 static bfd_boolean 1391 m32r_elf_add_symbol_hook (abfd, info, sym, namep, flagsp, secp, valp) 1392 bfd *abfd; 1393 struct bfd_link_info *info; 1394 Elf_Internal_Sym *sym; 1395 const char **namep; 1396 flagword *flagsp ATTRIBUTE_UNUSED; 1397 asection **secp; 1398 bfd_vma *valp; 1399 { 1400 if (! info->relocatable 1401 && (*namep)[0] == '_' && (*namep)[1] == 'S' 1402 && strcmp (*namep, "_SDA_BASE_") == 0 1403 && is_elf_hash_table (info->hash)) 1404 { 1405 /* This is simpler than using _bfd_elf_create_linker_section 1406 (our needs are simpler than ppc's needs). Also 1407 _bfd_elf_create_linker_section currently has a bug where if a .sdata 1408 section already exists a new one is created that follows it which 1409 screws of _SDA_BASE_ address calcs because output_offset != 0. */ 1410 struct elf_link_hash_entry *h; 1411 struct bfd_link_hash_entry *bh; 1412 asection *s = bfd_get_section_by_name (abfd, ".sdata"); 1413 1414 /* The following code was cobbled from elf32-ppc.c and elflink.c. */ 1415 1416 if (s == NULL) 1417 { 1418 flagword flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS 1419 | SEC_IN_MEMORY | SEC_LINKER_CREATED); 1420 1421 s = bfd_make_section_anyway (abfd, ".sdata"); 1422 if (s == NULL) 1423 return FALSE; 1424 bfd_set_section_flags (abfd, s, flags); 1425 bfd_set_section_alignment (abfd, s, 2); 1426 } 1427 1428 bh = bfd_link_hash_lookup (info->hash, "_SDA_BASE_", 1429 FALSE, FALSE, FALSE); 1430 1431 if ((bh == NULL || bh->type == bfd_link_hash_undefined) 1432 && !(_bfd_generic_link_add_one_symbol (info, 1433 abfd, 1434 "_SDA_BASE_", 1435 BSF_GLOBAL, 1436 s, 1437 (bfd_vma) 32768, 1438 (const char *) NULL, 1439 FALSE, 1440 get_elf_backend_data (abfd)->collect, 1441 &bh))) 1442 return FALSE; 1443 h = (struct elf_link_hash_entry *) bh; 1444 h->type = STT_OBJECT; 1445 } 1446 1447 switch (sym->st_shndx) 1448 { 1449 case SHN_M32R_SCOMMON: 1450 *secp = bfd_make_section_old_way (abfd, ".scommon"); 1451 (*secp)->flags |= SEC_IS_COMMON; 1452 *valp = sym->st_size; 1453 break; 1454 } 1455 1456 return TRUE; 1457 } 1458 1459 /* We have to figure out the SDA_BASE value, so that we can adjust the 1460 symbol value correctly. We look up the symbol _SDA_BASE_ in the output 1461 BFD. If we can't find it, we're stuck. We cache it in the ELF 1462 target data. We don't need to adjust the symbol value for an 1463 external symbol if we are producing relocatable output. */ 1464 1465 static bfd_reloc_status_type 1466 m32r_elf_final_sda_base (output_bfd, info, error_message, psb) 1467 bfd *output_bfd; 1468 struct bfd_link_info *info; 1469 const char **error_message; 1470 bfd_vma *psb; 1471 { 1472 if (elf_gp (output_bfd) == 0) 1473 { 1474 struct bfd_link_hash_entry *h; 1475 1476 h = bfd_link_hash_lookup (info->hash, "_SDA_BASE_", FALSE, FALSE, TRUE); 1477 if (h != (struct bfd_link_hash_entry *) NULL 1478 && h->type == bfd_link_hash_defined) 1479 elf_gp (output_bfd) = (h->u.def.value 1480 + h->u.def.section->output_section->vma 1481 + h->u.def.section->output_offset); 1482 else 1483 { 1484 /* Only get the error once. */ 1485 *psb = elf_gp (output_bfd) = 4; 1486 *error_message = 1487 (const char *) _("SDA relocation when _SDA_BASE_ not defined"); 1488 return bfd_reloc_dangerous; 1489 } 1490 } 1491 *psb = elf_gp (output_bfd); 1492 return bfd_reloc_ok; 1493 } 1494 1495 /* Return size of a PLT entry. */ 1496 #define elf_m32r_sizeof_plt(info) PLT_ENTRY_SIZE 1497 1498 /* The m32r linker needs to keep track of the number of relocs that it 1499 decides to copy in check_relocs for each symbol. This is so that 1500 it can discard PC relative relocs if it doesn't need them when 1501 linking with -Bsymbolic. We store the information in a field 1502 extending the regular ELF linker hash table. */ 1503 1504 /* This structure keeps track of the number of PC relative relocs we 1505 have copied for a given symbol. */ 1506 1507 struct elf_m32r_pcrel_relocs_copied 1508 { 1509 /* Next section. */ 1510 struct elf_m32r_pcrel_relocs_copied *next; 1511 /* A section in dynobj. */ 1512 asection *section; 1513 /* Number of relocs copied in this section. */ 1514 bfd_size_type count; 1515 }; 1516 1517 /* The sh linker needs to keep track of the number of relocs that it 1518 decides to copy as dynamic relocs in check_relocs for each symbol. 1519 This is so that it can later discard them if they are found to be 1520 unnecessary. We store the information in a field extending the 1521 regular ELF linker hash table. */ 1522 1523 struct elf_m32r_dyn_relocs 1524 { 1525 struct elf_m32r_dyn_relocs *next; 1526 1527 /* The input section of the reloc. */ 1528 asection *sec; 1529 1530 /* Total number of relocs copied for the input section. */ 1531 bfd_size_type count; 1532 1533 /* Number of pc-relative relocs copied for the input section. */ 1534 bfd_size_type pc_count; 1535 }; 1536 1537 1538 /* m32r ELF linker hash entry. */ 1539 1540 struct elf_m32r_link_hash_entry 1541 { 1542 struct elf_link_hash_entry root; 1543 1544 /* Track dynamic relocs copied for this symbol. */ 1545 struct elf_m32r_dyn_relocs *dyn_relocs; 1546 1547 // bfd_signed_vma gotplt_refcount; 1548 1549 /* Number of PC relative relocs copied for this symbol. */ 1550 /* struct elf_m32r_pcrel_relocs_copied *pcrel_relocs_copied; FIXME */ 1551 }; 1552 1553 /* m32r ELF linker hash table. */ 1554 1555 struct elf_m32r_link_hash_table 1556 { 1557 struct elf_link_hash_table root; 1558 1559 /* Short-cuts to get to dynamic linker sections. */ 1560 asection *sgot; 1561 asection *sgotplt; 1562 asection *srelgot; 1563 asection *splt; 1564 asection *srelplt; 1565 asection *sdynbss; 1566 asection *srelbss; 1567 1568 /* Small local sym to section mapping cache. */ 1569 struct sym_sec_cache sym_sec; 1570 }; 1571 1572 /* Traverse an m32r ELF linker hash table. */ 1573 1574 #define m32r_elf_link_hash_traverse(table, func, info) \ 1575 (elf_link_hash_traverse \ 1576 (&(table)->root, \ 1577 (bfd_boolean (*) PARAMS ((struct elf_link_hash_entry *, PTR))) (func), \ 1578 (info))) 1579 1580 /* Get the m32r ELF linker hash table from a link_info structure. */ 1581 1582 1583 #define m32r_elf_hash_table(p) \ 1584 ((struct elf_m32r_link_hash_table *) ((p)->hash)) 1585 1586 /* Create an entry in an m32r ELF linker hash table. */ 1587 static struct bfd_hash_entry * 1588 m32r_elf_link_hash_newfunc (struct bfd_hash_entry *, struct bfd_hash_table *, 1589 const char * ); 1590 1591 static struct bfd_hash_entry * 1592 m32r_elf_link_hash_newfunc (entry, table, string) 1593 struct bfd_hash_entry *entry; 1594 struct bfd_hash_table *table; 1595 const char *string; 1596 { 1597 struct elf_m32r_link_hash_entry *ret = 1598 (struct elf_m32r_link_hash_entry *) entry; 1599 1600 /* Allocate the structure if it has not already been allocated by a 1601 subclass. */ 1602 if (ret == (struct elf_m32r_link_hash_entry *) NULL) 1603 ret = ((struct elf_m32r_link_hash_entry *) 1604 bfd_hash_allocate (table, 1605 sizeof (struct elf_m32r_link_hash_entry))); 1606 if (ret == (struct elf_m32r_link_hash_entry *) NULL) 1607 return (struct bfd_hash_entry *) ret; 1608 1609 /* Call the allocation method of the superclass. */ 1610 ret = ((struct elf_m32r_link_hash_entry *) 1611 _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret, 1612 table, string)); 1613 if (ret != (struct elf_m32r_link_hash_entry *) NULL) 1614 { 1615 struct elf_m32r_link_hash_entry *eh; 1616 1617 eh = (struct elf_m32r_link_hash_entry *) ret; 1618 eh->dyn_relocs = NULL; 1619 // eh->gotplt_refcount = 0; 1620 /* eh->pcrel_relocs_copied = NULL; FIXME */ 1621 } 1622 1623 return (struct bfd_hash_entry *) ret; 1624 } 1625 1626 /* Create an m32r ELF linker hash table. */ 1627 static struct bfd_link_hash_table *m32r_elf_link_hash_table_create (bfd *); 1628 1629 static struct bfd_link_hash_table * 1630 m32r_elf_link_hash_table_create (abfd) 1631 bfd *abfd; 1632 { 1633 struct elf_m32r_link_hash_table *ret; 1634 bfd_size_type amt = sizeof (struct elf_m32r_link_hash_table); 1635 1636 ret = (struct elf_m32r_link_hash_table *) bfd_malloc (amt); 1637 if (ret == (struct elf_m32r_link_hash_table *) NULL) 1638 return NULL; 1639 1640 if (! _bfd_elf_link_hash_table_init (&ret->root, abfd, 1641 m32r_elf_link_hash_newfunc)) 1642 { 1643 free (ret); 1644 return NULL; 1645 } 1646 1647 ret->sgot = NULL; 1648 ret->sgotplt = NULL; 1649 ret->srelgot = NULL; 1650 ret->splt = NULL; 1651 ret->srelplt = NULL; 1652 ret->sdynbss = NULL; 1653 ret->srelbss = NULL; 1654 ret->sym_sec.abfd = NULL; 1655 1656 return &ret->root.root; 1657 } 1658 1659 /* Create .got, .gotplt, and .rela.got sections in DYNOBJ, and set up 1660 shortcuts to them in our hash table. */ 1661 static bfd_boolean create_got_section (bfd *, struct bfd_link_info *); 1662 1663 static bfd_boolean 1664 create_got_section (dynobj, info) 1665 bfd *dynobj; 1666 struct bfd_link_info *info; 1667 { 1668 struct elf_m32r_link_hash_table *htab; 1669 1670 if (! _bfd_elf_create_got_section (dynobj, info)) 1671 return FALSE; 1672 1673 htab = m32r_elf_hash_table (info); 1674 htab->sgot = bfd_get_section_by_name (dynobj, ".got"); 1675 htab->sgotplt = bfd_get_section_by_name (dynobj, ".got.plt"); 1676 if (! htab->sgot || ! htab->sgotplt) 1677 abort (); 1678 1679 htab->srelgot = bfd_make_section (dynobj, ".rela.got"); 1680 if (htab->srelgot == NULL 1681 || ! bfd_set_section_flags (dynobj, htab->srelgot, 1682 (SEC_ALLOC 1683 | SEC_LOAD 1684 | SEC_HAS_CONTENTS 1685 | SEC_IN_MEMORY 1686 | SEC_LINKER_CREATED 1687 | SEC_READONLY)) 1688 || ! bfd_set_section_alignment (dynobj, htab->srelgot, 2)) 1689 return FALSE; 1690 1691 return TRUE; 1692 } 1693 1694 /* Create dynamic sections when linking against a dynamic object. */ 1695 1696 static bfd_boolean 1697 m32r_elf_create_dynamic_sections (abfd, info) 1698 bfd *abfd; 1699 struct bfd_link_info *info; 1700 { 1701 struct elf_m32r_link_hash_table *htab; 1702 flagword flags, pltflags; 1703 register asection *s; 1704 const struct elf_backend_data *bed = get_elf_backend_data (abfd); 1705 int ptralign = 2; /* 32bit */ 1706 1707 htab = m32r_elf_hash_table (info); 1708 1709 /* We need to create .plt, .rel[a].plt, .got, .got.plt, .dynbss, and 1710 .rel[a].bss sections. */ 1711 1712 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY 1713 | SEC_LINKER_CREATED); 1714 1715 pltflags = flags; 1716 pltflags |= SEC_CODE; 1717 if (bed->plt_not_loaded) 1718 pltflags &= ~ (SEC_LOAD | SEC_HAS_CONTENTS); 1719 if (bed->plt_readonly) 1720 pltflags |= SEC_READONLY; 1721 1722 s = bfd_make_section (abfd, ".plt"); 1723 htab->splt = s; 1724 if (s == NULL 1725 || ! bfd_set_section_flags (abfd, s, pltflags) 1726 || ! bfd_set_section_alignment (abfd, s, bed->plt_alignment)) 1727 return FALSE; 1728 1729 if (bed->want_plt_sym) 1730 { 1731 /* Define the symbol _PROCEDURE_LINKAGE_TABLE_ at the start of the 1732 .plt section. */ 1733 struct bfd_link_hash_entry *bh = NULL; 1734 struct elf_link_hash_entry *h; 1735 if (! (_bfd_generic_link_add_one_symbol 1736 (info, abfd, "_PROCEDURE_LINKAGE_TABLE_", BSF_GLOBAL, s, 1737 (bfd_vma) 0, (const char *) NULL, FALSE, 1738 get_elf_backend_data (abfd)->collect, &bh))) 1739 return FALSE; 1740 h = (struct elf_link_hash_entry *) bh; 1741 h->elf_link_hash_flags |= ELF_LINK_HASH_DEF_REGULAR; 1742 h->type = STT_OBJECT; 1743 1744 if (info->shared 1745 && ! bfd_elf_link_record_dynamic_symbol (info, h)) 1746 return FALSE; 1747 } 1748 1749 s = bfd_make_section (abfd, 1750 bed->default_use_rela_p ? ".rela.plt" : ".rel.plt"); 1751 htab->srelplt = s; 1752 if (s == NULL 1753 || ! bfd_set_section_flags (abfd, s, flags | SEC_READONLY) 1754 || ! bfd_set_section_alignment (abfd, s, ptralign)) 1755 return FALSE; 1756 1757 if (htab->sgot == NULL 1758 && ! create_got_section (abfd, info)) 1759 return FALSE; 1760 1761 { 1762 const char *secname; 1763 char *relname; 1764 flagword secflags; 1765 asection *sec; 1766 1767 for (sec = abfd->sections; sec; sec = sec->next) 1768 { 1769 secflags = bfd_get_section_flags (abfd, sec); 1770 if ((secflags & (SEC_DATA | SEC_LINKER_CREATED)) 1771 || ((secflags & SEC_HAS_CONTENTS) != SEC_HAS_CONTENTS)) 1772 continue; 1773 secname = bfd_get_section_name (abfd, sec); 1774 relname = (char *) bfd_malloc ((bfd_size_type) strlen (secname) + 6); 1775 strcpy (relname, ".rela"); 1776 strcat (relname, secname); 1777 if (bfd_get_section_by_name (abfd, secname)) 1778 continue; 1779 s = bfd_make_section (abfd, relname); 1780 if (s == NULL 1781 || ! bfd_set_section_flags (abfd, s, flags | SEC_READONLY) 1782 || ! bfd_set_section_alignment (abfd, s, ptralign)) 1783 return FALSE; 1784 } 1785 } 1786 1787 if (bed->want_dynbss) 1788 { 1789 /* The .dynbss section is a place to put symbols which are defined 1790 by dynamic objects, are referenced by regular objects, and are 1791 not functions. We must allocate space for them in the process 1792 image and use a R_*_COPY reloc to tell the dynamic linker to 1793 initialize them at run time. The linker script puts the .dynbss 1794 section into the .bss section of the final image. */ 1795 s = bfd_make_section (abfd, ".dynbss"); 1796 htab->sdynbss = s; 1797 if (s == NULL 1798 || ! bfd_set_section_flags (abfd, s, SEC_ALLOC)) 1799 return FALSE; 1800 /* The .rel[a].bss section holds copy relocs. This section is not 1801 normally needed. We need to create it here, though, so that the 1802 linker will map it to an output section. We can't just create it 1803 only if we need it, because we will not know whether we need it 1804 until we have seen all the input files, and the first time the 1805 main linker code calls BFD after examining all the input files 1806 (size_dynamic_sections) the input sections have already been 1807 mapped to the output sections. If the section turns out not to 1808 be needed, we can discard it later. We will never need this 1809 section when generating a shared object, since they do not use 1810 copy relocs. */ 1811 if (! info->shared) 1812 { 1813 s = bfd_make_section (abfd, 1814 (bed->default_use_rela_p 1815 ? ".rela.bss" : ".rel.bss")); 1816 htab->srelbss = s; 1817 if (s == NULL 1818 || ! bfd_set_section_flags (abfd, s, flags | SEC_READONLY) 1819 || ! bfd_set_section_alignment (abfd, s, ptralign)) 1820 return FALSE; 1821 } 1822 } 1823 1824 return TRUE; 1825 } 1826 1827 /* Copy the extra info we tack onto an elf_link_hash_entry. */ 1828 static void m32r_elf_copy_indirect_symbol (const struct elf_backend_data *, 1829 struct elf_link_hash_entry *, 1830 struct elf_link_hash_entry *); 1831 1832 static void 1833 m32r_elf_copy_indirect_symbol (const struct elf_backend_data *bed, 1834 struct elf_link_hash_entry *dir, 1835 struct elf_link_hash_entry *ind) 1836 { 1837 struct elf_m32r_link_hash_entry *edir, *eind; 1838 1839 edir = (struct elf_m32r_link_hash_entry *) dir; 1840 eind = (struct elf_m32r_link_hash_entry *) ind; 1841 1842 if (eind->dyn_relocs != NULL) 1843 { 1844 if (edir->dyn_relocs != NULL) 1845 { 1846 struct elf_m32r_dyn_relocs **pp; 1847 struct elf_m32r_dyn_relocs *p; 1848 1849 if (ind->root.type == bfd_link_hash_indirect) 1850 abort (); 1851 1852 /* Add reloc counts against the weak sym to the strong sym 1853 list. Merge any entries against the same section. */ 1854 for (pp = &eind->dyn_relocs; (p = *pp) != NULL; ) 1855 { 1856 struct elf_m32r_dyn_relocs *q; 1857 1858 for (q = edir->dyn_relocs; q != NULL; q = q->next) 1859 if (q->sec == p->sec) 1860 { 1861 q->pc_count += p->pc_count; 1862 q->count += p->count; 1863 *pp = p->next; 1864 break; 1865 } 1866 if (q == NULL) 1867 pp = &p->next; 1868 } 1869 *pp = edir->dyn_relocs; 1870 } 1871 1872 edir->dyn_relocs = eind->dyn_relocs; 1873 eind->dyn_relocs = NULL; 1874 } 1875 1876 // if (ind->root.type == bfd_link_hash_indirect 1877 // && dir->got.refcount <= 0) 1878 // { 1879 // edir->tls_type = eind->tls_type; 1880 // eind->tls_type = GOT_UNKNOWN; 1881 // } 1882 _bfd_elf_link_hash_copy_indirect (bed, dir, ind); 1883 } 1884 1885 1886 /* Adjust a symbol defined by a dynamic object and referenced by a 1887 regular object. The current definition is in some section of the 1888 dynamic object, but we're not including those sections. We have to 1889 change the definition to something the rest of the link can 1890 understand. */ 1891 1892 static bfd_boolean 1893 m32r_elf_adjust_dynamic_symbol (info, h) 1894 struct bfd_link_info *info; 1895 struct elf_link_hash_entry *h; 1896 { 1897 struct elf_m32r_link_hash_table *htab; 1898 struct elf_m32r_link_hash_entry *eh; 1899 struct elf_m32r_dyn_relocs *p; 1900 bfd *dynobj; 1901 asection *s; 1902 unsigned int power_of_two; 1903 1904 #ifdef DEBUG_PIC 1905 printf("m32r_elf_adjust_dynamic_symbol()\n"); 1906 #endif 1907 1908 dynobj = elf_hash_table (info)->dynobj; 1909 1910 /* Make sure we know what is going on here. */ 1911 BFD_ASSERT (dynobj != NULL 1912 && ((h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT) 1913 || h->weakdef != NULL 1914 || ((h->elf_link_hash_flags 1915 & ELF_LINK_HASH_DEF_DYNAMIC) != 0 1916 && (h->elf_link_hash_flags 1917 & ELF_LINK_HASH_REF_REGULAR) != 0 1918 && (h->elf_link_hash_flags 1919 & ELF_LINK_HASH_DEF_REGULAR) == 0))); 1920 1921 1922 /* If this is a function, put it in the procedure linkage table. We 1923 will fill in the contents of the procedure linkage table later, 1924 when we know the address of the .got section. */ 1925 if (h->type == STT_FUNC 1926 || (h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT) != 0) 1927 { 1928 if (! info->shared 1929 && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) == 0 1930 && (h->elf_link_hash_flags & ELF_LINK_HASH_REF_DYNAMIC) == 0 1931 && h->root.type != bfd_link_hash_undefweak 1932 && h->root.type != bfd_link_hash_undefined) 1933 { 1934 /* This case can occur if we saw a PLT reloc in an input 1935 file, but the symbol was never referred to by a dynamic 1936 object. In such a case, we don't actually need to build 1937 a procedure linkage table, and we can just do a PCREL 1938 reloc instead. */ 1939 h->plt.offset = (bfd_vma) -1; 1940 h->elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT; 1941 } 1942 1943 return TRUE; 1944 } 1945 else 1946 h->plt.offset = (bfd_vma) -1; 1947 1948 /* If this is a weak symbol, and there is a real definition, the 1949 processor independent code will have arranged for us to see the 1950 real definition first, and we can just use the same value. */ 1951 if (h->weakdef != NULL) 1952 { 1953 BFD_ASSERT (h->weakdef->root.type == bfd_link_hash_defined 1954 || h->weakdef->root.type == bfd_link_hash_defweak); 1955 h->root.u.def.section = h->weakdef->root.u.def.section; 1956 h->root.u.def.value = h->weakdef->root.u.def.value; 1957 return TRUE; 1958 } 1959 1960 /* This is a reference to a symbol defined by a dynamic object which 1961 is not a function. */ 1962 1963 /* If we are creating a shared library, we must presume that the 1964 only references to the symbol are via the global offset table. 1965 For such cases we need not do anything here; the relocations will 1966 be handled correctly by relocate_section. */ 1967 if (info->shared) 1968 return TRUE; 1969 1970 /* If there are no references to this symbol that do not use the 1971 GOT, we don't need to generate a copy reloc. */ 1972 if ((h->elf_link_hash_flags & ELF_LINK_NON_GOT_REF) == 0) 1973 return TRUE; 1974 1975 /* If -z nocopyreloc was given, we won't generate them either. */ 1976 if (info->nocopyreloc) 1977 { 1978 h->elf_link_hash_flags &= ~ELF_LINK_NON_GOT_REF; 1979 return TRUE; 1980 } 1981 1982 eh = (struct elf_m32r_link_hash_entry *) h; 1983 for (p = eh->dyn_relocs; p != NULL; p = p->next) 1984 { 1985 s = p->sec->output_section; 1986 if (s != NULL && (s->flags & (SEC_READONLY | SEC_HAS_CONTENTS)) != 0) 1987 break; 1988 } 1989 1990 /* If we didn't find any dynamic relocs in sections which needs the 1991 copy reloc, then we'll be keeping the dynamic relocs and avoiding 1992 the copy reloc. */ 1993 if (p == NULL) 1994 { 1995 h->elf_link_hash_flags &= ~ELF_LINK_NON_GOT_REF; 1996 return TRUE; 1997 } 1998 1999 /* We must allocate the symbol in our .dynbss section, which will 2000 become part of the .bss section of the executable. There will be 2001 an entry for this symbol in the .dynsym section. The dynamic 2002 object will contain position independent code, so all references 2003 from the dynamic object to this symbol will go through the global 2004 offset table. The dynamic linker will use the .dynsym entry to 2005 determine the address it must put in the global offset table, so 2006 both the dynamic object and the regular object will refer to the 2007 same memory location for the variable. */ 2008 2009 htab = m32r_elf_hash_table (info); 2010 s = htab->sdynbss; 2011 BFD_ASSERT (s != NULL); 2012 2013 /* We must generate a R_M32R_COPY reloc to tell the dynamic linker 2014 to copy the initial value out of the dynamic object and into the 2015 runtime process image. We need to remember the offset into the 2016 .rela.bss section we are going to use. */ 2017 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0) 2018 { 2019 asection *srel; 2020 2021 srel = htab->srelbss; 2022 BFD_ASSERT (srel != NULL); 2023 srel->_raw_size += sizeof (Elf32_External_Rela); 2024 h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_COPY; 2025 } 2026 2027 /* We need to figure out the alignment required for this symbol. I 2028 have no idea how ELF linkers handle this. */ 2029 power_of_two = bfd_log2 (h->size); 2030 if (power_of_two > 3) 2031 power_of_two = 3; 2032 2033 /* Apply the required alignment. */ 2034 s->_raw_size = BFD_ALIGN (s->_raw_size, 2035 (bfd_size_type) (1 << power_of_two)); 2036 if (power_of_two > bfd_get_section_alignment (dynobj, s)) 2037 { 2038 if (! bfd_set_section_alignment (dynobj, s, power_of_two)) 2039 return FALSE; 2040 } 2041 2042 /* Define the symbol as being at this point in the section. */ 2043 h->root.u.def.section = s; 2044 h->root.u.def.value = s->_raw_size; 2045 2046 /* Increment the section size to make room for the symbol. */ 2047 s->_raw_size += h->size; 2048 2049 return TRUE; 2050 } 2051 2052 /* Allocate space in .plt, .got and associated reloc sections for 2053 dynamic relocs. */ 2054 2055 static bfd_boolean 2056 allocate_dynrelocs (h, inf) 2057 struct elf_link_hash_entry *h; 2058 PTR inf; 2059 { 2060 struct bfd_link_info *info; 2061 struct elf_m32r_link_hash_table *htab; 2062 struct elf_m32r_link_hash_entry *eh; 2063 struct elf_m32r_dyn_relocs *p; 2064 2065 if (h->root.type == bfd_link_hash_indirect) 2066 return TRUE; 2067 2068 if (h->root.type == bfd_link_hash_warning) 2069 /* When warning symbols are created, they **replace** the "real" 2070 entry in the hash table, thus we never get to see the real 2071 symbol in a hash traversal. So look at it now. */ 2072 h = (struct elf_link_hash_entry *) h->root.u.i.link; 2073 2074 info = (struct bfd_link_info *) inf; 2075 htab = m32r_elf_hash_table (info); 2076 2077 eh = (struct elf_m32r_link_hash_entry *) h; 2078 // if ((h->got.refcount > 0 2079 // || (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL)) 2080 // && eh->gotplt_refcount > 0) 2081 // { 2082 // /* The symbol has been forced local, or we have some direct got refs, 2083 // so treat all the gotplt refs as got refs. */ 2084 // h->got.refcount += eh->gotplt_refcount; 2085 // if (h->plt.refcount >= eh->gotplt_refcount) 2086 // h->plt.refcount -= eh->gotplt_refcount; 2087 // } 2088 2089 if (htab->root.dynamic_sections_created 2090 && h->plt.refcount > 0) 2091 { 2092 /* Make sure this symbol is output as a dynamic symbol. 2093 Undefined weak syms won't yet be marked as dynamic. */ 2094 if (h->dynindx == -1 2095 && (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0) 2096 { 2097 if (! bfd_elf_link_record_dynamic_symbol (info, h)) 2098 return FALSE; 2099 } 2100 2101 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, info->shared, h)) 2102 { 2103 asection *s = htab->splt; 2104 2105 /* If this is the first .plt entry, make room for the special 2106 first entry. */ 2107 if (s->_raw_size == 0) 2108 s->_raw_size += PLT_ENTRY_SIZE; 2109 2110 h->plt.offset = s->_raw_size; 2111 2112 /* If this symbol is not defined in a regular file, and we are 2113 not generating a shared library, then set the symbol to this 2114 location in the .plt. This is required to make function 2115 pointers compare as equal between the normal executable and 2116 the shared library. */ 2117 if (! info->shared 2118 && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0) 2119 { 2120 h->root.u.def.section = s; 2121 h->root.u.def.value = h->plt.offset; 2122 } 2123 2124 /* Make room for this entry. */ 2125 s->_raw_size += PLT_ENTRY_SIZE; 2126 2127 /* We also need to make an entry in the .got.plt section, which 2128 will be placed in the .got section by the linker script. */ 2129 htab->sgotplt->_raw_size += 4; 2130 2131 /* We also need to make an entry in the .rel.plt section. */ 2132 htab->srelplt->_raw_size += sizeof (Elf32_External_Rela); 2133 } 2134 else 2135 { 2136 h->plt.offset = (bfd_vma) -1; 2137 h->elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT; 2138 } 2139 } 2140 else 2141 { 2142 h->plt.offset = (bfd_vma) -1; 2143 h->elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT; 2144 } 2145 2146 if (h->got.refcount > 0) 2147 { 2148 asection *s; 2149 bfd_boolean dyn; 2150 2151 /* Make sure this symbol is output as a dynamic symbol. 2152 Undefined weak syms won't yet be marked as dynamic. */ 2153 if (h->dynindx == -1 2154 && (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0) 2155 { 2156 if (! bfd_elf_link_record_dynamic_symbol (info, h)) 2157 return FALSE; 2158 } 2159 2160 s = htab->sgot; 2161 2162 h->got.offset = s->_raw_size; 2163 s->_raw_size += 4; 2164 dyn = htab->root.dynamic_sections_created; 2165 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h)) 2166 htab->srelgot->_raw_size += sizeof (Elf32_External_Rela); 2167 } 2168 else 2169 h->got.offset = (bfd_vma) -1; 2170 2171 if (eh->dyn_relocs == NULL) 2172 return TRUE; 2173 2174 /* In the shared -Bsymbolic case, discard space allocated for 2175 dynamic pc-relative relocs against symbols which turn out to be 2176 defined in regular objects. For the normal shared case, discard 2177 space for pc-relative relocs that have become local due to symbol 2178 visibility changes. */ 2179 2180 if (info->shared) 2181 { 2182 if ((h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) != 0 2183 && ((h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) != 0 2184 || info->symbolic)) 2185 { 2186 struct elf_m32r_dyn_relocs **pp; 2187 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; ) 2188 { 2189 p->count -= p->pc_count; 2190 p->pc_count = 0; 2191 if (p->count == 0) 2192 *pp = p->next; 2193 else 2194 pp = &p->next; 2195 } 2196 } 2197 } 2198 else 2199 { 2200 /* For the non-shared case, discard space for relocs against 2201 symbols which turn out to need copy relocs or are not 2202 dynamic. */ 2203 2204 if ((h->elf_link_hash_flags & ELF_LINK_NON_GOT_REF) == 0 2205 && (((h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) != 0 2206 && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0) 2207 || (htab->root.dynamic_sections_created 2208 && (h->root.type == bfd_link_hash_undefweak 2209 || h->root.type == bfd_link_hash_undefined)))) 2210 { 2211 /* Make sure this symbol is output as a dynamic symbol. 2212 Undefined weak syms won't yet be marked as dynamic. */ 2213 if (h->dynindx == -1 2214 && (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0) 2215 { 2216 if (! bfd_elf_link_record_dynamic_symbol (info, h)) 2217 return FALSE; 2218 } 2219 2220 /* If that succeeded, we know we'll be keeping all the 2221 relocs. */ 2222 if (h->dynindx != -1) 2223 goto keep; 2224 } 2225 2226 eh->dyn_relocs = NULL; 2227 2228 keep: ; 2229 } 2230 2231 /* Finally, allocate space. */ 2232 for (p = eh->dyn_relocs; p != NULL; p = p->next) 2233 { 2234 asection *sreloc = elf_section_data (p->sec)->sreloc; 2235 sreloc->_raw_size += p->count * sizeof (Elf32_External_Rela); 2236 } 2237 2238 return TRUE; 2239 } 2240 /* Find any dynamic relocs that apply to read-only sections. */ 2241 2242 static bfd_boolean 2243 readonly_dynrelocs (h, inf) 2244 struct elf_link_hash_entry *h; 2245 PTR inf; 2246 { 2247 struct elf_m32r_link_hash_entry *eh; 2248 struct elf_m32r_dyn_relocs *p; 2249 2250 if (h->root.type == bfd_link_hash_warning) 2251 h = (struct elf_link_hash_entry *) h->root.u.i.link; 2252 2253 eh = (struct elf_m32r_link_hash_entry *) h; 2254 for (p = eh->dyn_relocs; p != NULL; p = p->next) 2255 { 2256 asection *s = p->sec->output_section; 2257 2258 if (s != NULL && (s->flags & SEC_READONLY) != 0) 2259 { 2260 struct bfd_link_info *info = (struct bfd_link_info *) inf; 2261 2262 info->flags |= DF_TEXTREL; 2263 2264 /* Not an error, just cut short the traversal. */ 2265 return FALSE; 2266 } 2267 } 2268 return TRUE; 2269 } 2270 2271 /* Set the sizes of the dynamic sections. */ 2272 2273 static bfd_boolean 2274 m32r_elf_size_dynamic_sections (output_bfd, info) 2275 bfd *output_bfd ATTRIBUTE_UNUSED; 2276 struct bfd_link_info *info; 2277 { 2278 struct elf_m32r_link_hash_table *htab; 2279 bfd *dynobj; 2280 asection *s; 2281 bfd_boolean relocs; 2282 bfd *ibfd; 2283 2284 #ifdef DEBUG_PIC 2285 printf("m32r_elf_size_dynamic_sections()\n"); 2286 #endif 2287 2288 htab = m32r_elf_hash_table (info); 2289 dynobj = htab->root.dynobj; 2290 BFD_ASSERT (dynobj != NULL); 2291 2292 if (htab->root.dynamic_sections_created) 2293 { 2294 /* Set the contents of the .interp section to the interpreter. */ 2295 if (! info->shared) 2296 { 2297 s = bfd_get_section_by_name (dynobj, ".interp"); 2298 BFD_ASSERT (s != NULL); 2299 s->_raw_size = sizeof ELF_DYNAMIC_INTERPRETER; 2300 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER; 2301 } 2302 } 2303 2304 /* Set up .got offsets for local syms, and space for local dynamic 2305 relocs. */ 2306 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) 2307 { 2308 bfd_signed_vma *local_got; 2309 bfd_signed_vma *end_local_got; 2310 bfd_size_type locsymcount; 2311 Elf_Internal_Shdr *symtab_hdr; 2312 asection *srel; 2313 2314 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour) 2315 continue; 2316 2317 for (s = ibfd->sections; s != NULL; s = s->next) 2318 { 2319 struct elf_m32r_dyn_relocs *p; 2320 2321 for (p = ((struct elf_m32r_dyn_relocs *) 2322 elf_section_data (s)->local_dynrel); 2323 p != NULL; 2324 p = p->next) 2325 { 2326 if (! bfd_is_abs_section (p->sec) 2327 && bfd_is_abs_section (p->sec->output_section)) 2328 { 2329 /* Input section has been discarded, either because 2330 it is a copy of a linkonce section or due to 2331 linker script /DISCARD/, so we'll be discarding 2332 the relocs too. */ 2333 } 2334 else if (p->count != 0) 2335 { 2336 srel = elf_section_data (p->sec)->sreloc; 2337 srel->_raw_size += p->count * sizeof (Elf32_External_Rela); 2338 if ((p->sec->output_section->flags & SEC_READONLY) != 0) 2339 info->flags |= DF_TEXTREL; 2340 } 2341 } 2342 } 2343 2344 local_got = elf_local_got_refcounts (ibfd); 2345 if (!local_got) 2346 continue; 2347 2348 symtab_hdr = &elf_tdata (ibfd)->symtab_hdr; 2349 locsymcount = symtab_hdr->sh_info; 2350 end_local_got = local_got + locsymcount; 2351 s = htab->sgot; 2352 srel = htab->srelgot; 2353 for (; local_got < end_local_got; ++local_got) 2354 { 2355 if (*local_got > 0) 2356 { 2357 *local_got = s->_raw_size; 2358 s->_raw_size += 4; 2359 if (info->shared) 2360 srel->_raw_size += sizeof (Elf32_External_Rela); 2361 } 2362 else 2363 *local_got = (bfd_vma) -1; 2364 } 2365 } 2366 2367 /* Allocate global sym .plt and .got entries, and space for global 2368 sym dynamic relocs. */ 2369 elf_link_hash_traverse (&htab->root, allocate_dynrelocs, (PTR) info); 2370 2371 /* We now have determined the sizes of the various dynamic sections. 2372 Allocate memory for them. */ 2373 relocs = FALSE; 2374 for (s = dynobj->sections; s != NULL; s = s->next) 2375 { 2376 if ((s->flags & SEC_LINKER_CREATED) == 0) 2377 continue; 2378 2379 if (s == htab->splt 2380 || s == htab->sgot 2381 || s == htab->sgotplt) 2382 { 2383 /* Strip this section if we don't need it; see the 2384 comment below. */ 2385 } 2386 else if (strncmp (bfd_get_section_name (dynobj, s), ".rela", 5) == 0) 2387 { 2388 if (s->_raw_size != 0 && s != htab->srelplt) 2389 relocs = TRUE; 2390 2391 /* We use the reloc_count field as a counter if we need 2392 to copy relocs into the output file. */ 2393 s->reloc_count = 0; 2394 } 2395 else 2396 { 2397 /* It's not one of our sections, so don't allocate space. */ 2398 continue; 2399 } 2400 2401 if (s->_raw_size == 0) 2402 { 2403 /* If we don't need this section, strip it from the 2404 output file. This is mostly to handle .rela.bss and 2405 .rela.plt. We must create both sections in 2406 create_dynamic_sections, because they must be created 2407 before the linker maps input sections to output 2408 sections. The linker does that before 2409 adjust_dynamic_symbol is called, and it is that 2410 function which decides whether anything needs to go 2411 into these sections. */ 2412 _bfd_strip_section_from_output (info, s); 2413 continue; 2414 } 2415 2416 /* Allocate memory for the section contents. We use bfd_zalloc 2417 here in case unused entries are not reclaimed before the 2418 section's contents are written out. This should not happen, 2419 but this way if it does, we get a R_M32R_NONE reloc instead 2420 of garbage. */ 2421 s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->_raw_size); 2422 if (s->contents == NULL) 2423 return FALSE; 2424 } 2425 2426 if (htab->root.dynamic_sections_created) 2427 { 2428 /* Add some entries to the .dynamic section. We fill in the 2429 values later, in m32r_elf_finish_dynamic_sections, but we 2430 must add the entries now so that we get the correct size for 2431 the .dynamic section. The DT_DEBUG entry is filled in by the 2432 dynamic linker and used by the debugger. */ 2433 #define add_dynamic_entry(TAG, VAL) \ 2434 _bfd_elf_add_dynamic_entry (info, TAG, VAL) 2435 2436 if (! info->shared) 2437 { 2438 if (! add_dynamic_entry (DT_DEBUG, 0)) 2439 return FALSE; 2440 } 2441 2442 if (htab->splt->_raw_size != 0) 2443 { 2444 if (! add_dynamic_entry (DT_PLTGOT, 0) 2445 || ! add_dynamic_entry (DT_PLTRELSZ, 0) 2446 || ! add_dynamic_entry (DT_PLTREL, DT_RELA) 2447 || ! add_dynamic_entry (DT_JMPREL, 0)) 2448 return FALSE; 2449 } 2450 2451 if (relocs) 2452 { 2453 if (! add_dynamic_entry (DT_RELA, 0) 2454 || ! add_dynamic_entry (DT_RELASZ, 0) 2455 || ! add_dynamic_entry (DT_RELAENT, 2456 sizeof (Elf32_External_Rela))) 2457 return FALSE; 2458 2459 /* If any dynamic relocs apply to a read-only section, 2460 then we need a DT_TEXTREL entry. */ 2461 if ((info->flags & DF_TEXTREL) == 0) 2462 elf_link_hash_traverse (&htab->root, readonly_dynrelocs, 2463 (PTR) info); 2464 2465 if ((info->flags & DF_TEXTREL) != 0) 2466 { 2467 if (! add_dynamic_entry (DT_TEXTREL, 0)) 2468 return FALSE; 2469 } 2470 } 2471 } 2472 #undef add_dynamic_entry 2473 2474 return TRUE; 2475 } 2476 /* Relocate an M32R/D ELF section. 2477 There is some attempt to make this function usable for many architectures, 2478 both for RELA and REL type relocs, if only to serve as a learning tool. 2479 2480 The RELOCATE_SECTION function is called by the new ELF backend linker 2481 to handle the relocations for a section. 2482 2483 The relocs are always passed as Rela structures; if the section 2484 actually uses Rel structures, the r_addend field will always be 2485 zero. 2486 2487 This function is responsible for adjust the section contents as 2488 necessary, and (if using Rela relocs and generating a 2489 relocatable output file) adjusting the reloc addend as 2490 necessary. 2491 2492 This function does not have to worry about setting the reloc 2493 address or the reloc symbol index. 2494 2495 LOCAL_SYMS is a pointer to the swapped in local symbols. 2496 2497 LOCAL_SECTIONS is an array giving the section in the input file 2498 corresponding to the st_shndx field of each local symbol. 2499 2500 The global hash table entry for the global symbols can be found 2501 via elf_sym_hashes (input_bfd). 2502 2503 When generating relocatable output, this function must handle 2504 STB_LOCAL/STT_SECTION symbols specially. The output symbol is 2505 going to be the section symbol corresponding to the output 2506 section, which means that the addend must be adjusted 2507 accordingly. */ 2508 2509 static bfd_boolean 2510 m32r_elf_relocate_section (output_bfd, info, input_bfd, input_section, 2511 contents, relocs, local_syms, local_sections) 2512 bfd *output_bfd ATTRIBUTE_UNUSED; 2513 struct bfd_link_info *info; 2514 bfd *input_bfd; 2515 asection *input_section; 2516 bfd_byte *contents; 2517 Elf_Internal_Rela *relocs; 2518 Elf_Internal_Sym *local_syms; 2519 asection **local_sections; 2520 { 2521 Elf_Internal_Shdr *symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; 2522 struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (input_bfd); 2523 Elf_Internal_Rela *rel, *relend; 2524 /* Assume success. */ 2525 bfd_boolean ret = TRUE; 2526 2527 struct elf_m32r_link_hash_table *htab = m32r_elf_hash_table (info); 2528 bfd *dynobj; 2529 bfd_vma *local_got_offsets; 2530 asection *sgot, *splt, *sreloc; 2531 2532 dynobj = htab->root.dynobj; 2533 local_got_offsets = elf_local_got_offsets (input_bfd); 2534 2535 sgot = htab->sgot; 2536 splt = htab->splt; 2537 sreloc = NULL; 2538 2539 rel = relocs; 2540 relend = relocs + input_section->reloc_count; 2541 for (; rel < relend; rel++) 2542 { 2543 int r_type; 2544 reloc_howto_type *howto; 2545 unsigned long r_symndx; 2546 struct elf_link_hash_entry *h; 2547 /* We can't modify r_addend here as elf_link_input_bfd has an assert to 2548 ensure it's zero (we use REL relocs, not RELA). Therefore this 2549 should be assigning zero to `addend', but for clarity we use 2550 `r_addend'. */ 2551 bfd_vma addend = rel->r_addend; 2552 bfd_vma offset = rel->r_offset; 2553 Elf_Internal_Sym *sym; 2554 asection *sec; 2555 const char *sym_name; 2556 bfd_reloc_status_type r; 2557 const char *errmsg = NULL; 2558 bfd_boolean use_rel = FALSE; 2559 2560 h = NULL; 2561 r_type = ELF32_R_TYPE (rel->r_info); 2562 if (r_type < 0 || r_type >= (int) R_M32R_max) 2563 { 2564 (*_bfd_error_handler) (_("%s: unknown relocation type %d"), 2565 bfd_archive_filename (input_bfd), 2566 (int) r_type); 2567 bfd_set_error (bfd_error_bad_value); 2568 ret = FALSE; 2569 continue; 2570 } 2571 2572 if (r_type == R_M32R_GNU_VTENTRY 2573 || r_type == R_M32R_GNU_VTINHERIT 2574 || r_type == R_M32R_NONE 2575 || r_type == R_M32R_RELA_GNU_VTENTRY 2576 || r_type == R_M32R_RELA_GNU_VTINHERIT) 2577 continue; 2578 2579 if (r_type <= R_M32R_GNU_VTENTRY) 2580 use_rel = TRUE; 2581 2582 howto = m32r_elf_howto_table + r_type; 2583 r_symndx = ELF32_R_SYM (rel->r_info); 2584 2585 if (info->relocatable && (use_rel == TRUE)) 2586 { 2587 /* This is a relocatable link. We don't have to change 2588 anything, unless the reloc is against a section symbol, 2589 in which case we have to adjust according to where the 2590 section symbol winds up in the output section. */ 2591 sec = NULL; 2592 if (r_symndx >= symtab_hdr->sh_info) 2593 { 2594 /* External symbol. */ 2595 continue; 2596 } 2597 2598 /* Local symbol. */ 2599 sym = local_syms + r_symndx; 2600 sym_name = "<local symbol>"; 2601 /* STT_SECTION: symbol is associated with a section. */ 2602 if (ELF_ST_TYPE (sym->st_info) != STT_SECTION) 2603 { 2604 /* Symbol isn't associated with a section. Nothing to do. */ 2605 continue; 2606 } 2607 2608 sec = local_sections[r_symndx]; 2609 addend += sec->output_offset + sym->st_value; 2610 2611 /* If partial_inplace, we need to store any additional addend 2612 back in the section. */ 2613 if (! howto->partial_inplace) 2614 continue; 2615 /* ??? Here is a nice place to call a special_function 2616 like handler. */ 2617 if (r_type != R_M32R_HI16_SLO && r_type != R_M32R_HI16_ULO) 2618 r = _bfd_relocate_contents (howto, input_bfd, 2619 addend, contents + offset); 2620 else 2621 { 2622 Elf_Internal_Rela *lorel; 2623 2624 /* We allow an arbitrary number of HI16 relocs before the 2625 LO16 reloc. This permits gcc to emit the HI and LO relocs 2626 itself. */ 2627 for (lorel = rel + 1; 2628 (lorel < relend 2629 && (ELF32_R_TYPE (lorel->r_info) == R_M32R_HI16_SLO 2630 || ELF32_R_TYPE (lorel->r_info) == R_M32R_HI16_ULO)); 2631 lorel++) 2632 continue; 2633 if (lorel < relend 2634 && ELF32_R_TYPE (lorel->r_info) == R_M32R_LO16) 2635 { 2636 m32r_elf_relocate_hi16 (input_bfd, r_type, rel, lorel, 2637 contents, addend); 2638 r = bfd_reloc_ok; 2639 } 2640 else 2641 r = _bfd_relocate_contents (howto, input_bfd, 2642 addend, contents + offset); 2643 } 2644 } 2645 else 2646 { 2647 bfd_vma relocation; 2648 2649 /* This is a final link. */ 2650 sym = NULL; 2651 sec = NULL; 2652 h = NULL; 2653 2654 if (r_symndx < symtab_hdr->sh_info) 2655 { 2656 /* Local symbol. */ 2657 sym = local_syms + r_symndx; 2658 sec = local_sections[r_symndx]; 2659 sym_name = "<local symbol>"; 2660 2661 if (use_rel == FALSE) 2662 { 2663 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel); 2664 addend = rel->r_addend; 2665 2666 if (info->relocatable) 2667 { 2668 /* This is a relocatable link. We don't have to change 2669 anything, unless the reloc is against a section symbol, 2670 in which case we have to adjust according to where the 2671 section symbol winds up in the output section. */ 2672 if (ELF_ST_TYPE (sym->st_info) == STT_SECTION) 2673 rel->r_addend += sec->output_offset + sym->st_value; 2674 2675 continue; 2676 } 2677 } 2678 else 2679 { 2680 relocation = (sec->output_section->vma 2681 + sec->output_offset 2682 + sym->st_value); 2683 } 2684 } 2685 else 2686 { 2687 /* External symbol. */ 2688 if (info->relocatable && (use_rel == FALSE)) 2689 continue; 2690 2691 h = sym_hashes[r_symndx - symtab_hdr->sh_info]; 2692 while (h->root.type == bfd_link_hash_indirect 2693 || h->root.type == bfd_link_hash_warning) 2694 h = (struct elf_link_hash_entry *) h->root.u.i.link; 2695 sym_name = h->root.root.string; 2696 2697 if (h->root.type == bfd_link_hash_defined 2698 || h->root.type == bfd_link_hash_defweak) 2699 { 2700 bfd_boolean dyn; 2701 sec = h->root.u.def.section; 2702 2703 dyn = htab->root.dynamic_sections_created; 2704 sec = h->root.u.def.section; 2705 if (r_type == R_M32R_GOTPC24 2706 || (r_type == R_M32R_GOTPC_HI_ULO 2707 || r_type == R_M32R_GOTPC_HI_SLO 2708 || r_type == R_M32R_GOTPC_LO) 2709 || (r_type == R_M32R_26_PLTREL 2710 && h->plt.offset != (bfd_vma) -1) 2711 || ((r_type == R_M32R_GOT24 2712 || r_type == R_M32R_GOT16_HI_ULO 2713 || r_type == R_M32R_GOT16_HI_SLO 2714 || r_type == R_M32R_GOT16_LO) 2715 && WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 2716 info->shared, h) 2717 && (! info->shared 2718 || (! info->symbolic && h->dynindx != -1) 2719 || (h->elf_link_hash_flags 2720 & ELF_LINK_HASH_DEF_REGULAR) == 0)) 2721 || (info->shared 2722 && ((! info->symbolic && h->dynindx != -1) 2723 || (h->elf_link_hash_flags 2724 & ELF_LINK_HASH_DEF_REGULAR) == 0) 2725 && (((r_type == R_M32R_16_RELA 2726 || r_type == R_M32R_32_RELA 2727 || r_type == R_M32R_24_RELA 2728 || r_type == R_M32R_HI16_ULO_RELA 2729 || r_type == R_M32R_HI16_SLO_RELA 2730 || r_type == R_M32R_LO16_RELA) 2731 && (h->elf_link_hash_flags 2732 & ELF_LINK_FORCED_LOCAL) == 0) 2733 || r_type == R_M32R_10_PCREL_RELA 2734 || r_type == R_M32R_18_PCREL_RELA 2735 || r_type == R_M32R_26_PCREL_RELA) 2736 && ((input_section->flags & SEC_ALLOC) != 0 2737 /* DWARF will emit R_M32R_16(24,32) relocations 2738 in its sections against symbols defined 2739 externally in shared libraries. We can't do 2740 anything with them here. */ 2741 || ((input_section->flags & SEC_DEBUGGING) != 0 2742 && (h->elf_link_hash_flags 2743 & ELF_LINK_HASH_DEF_DYNAMIC) != 0)))) 2744 { 2745 /* In these cases, we don't need the relocation 2746 value. We check specially because in some 2747 obscure cases sec->output_section will be NULL. */ 2748 relocation = 0; 2749 } 2750 else if (sec->output_section == NULL) 2751 { 2752 (*_bfd_error_handler) 2753 (_("%s: warning: unresolvable relocation against symbol `%s' from %s section"), 2754 bfd_get_filename (input_bfd), h->root.root.string, 2755 bfd_get_section_name (input_bfd, input_section)); 2756 2757 relocation = 0; 2758 } 2759 else 2760 relocation = (h->root.u.def.value 2761 + sec->output_section->vma 2762 + sec->output_offset); 2763 } 2764 else if (h->root.type == bfd_link_hash_undefweak) 2765 relocation = 0; 2766 else if (info->unresolved_syms_in_objects == RM_IGNORE 2767 && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT) 2768 relocation = 0; 2769 else 2770 { 2771 if (! ((*info->callbacks->undefined_symbol) 2772 (info, h->root.root.string, input_bfd, 2773 input_section, offset, 2774 (info->unresolved_syms_in_objects == RM_GENERATE_ERROR 2775 || ELF_ST_VISIBILITY (h->other))))) 2776 return FALSE; 2777 relocation = 0; 2778 } 2779 } 2780 2781 /* Sanity check the address. */ 2782 if (offset > input_section->_raw_size) 2783 { 2784 r = bfd_reloc_outofrange; 2785 goto check_reloc; 2786 } 2787 2788 switch ((int) r_type) 2789 { 2790 case R_M32R_GOTPC24: 2791 /* .got(_GLOBAL_OFFSET_TABLE_) - pc relocation 2792 ld24 rx,#_GLOBAL_OFFSET_TABLE_ 2793 */ 2794 relocation = sgot->output_section->vma; 2795 break; 2796 2797 case R_M32R_GOTPC_HI_ULO: 2798 case R_M32R_GOTPC_HI_SLO: 2799 case R_M32R_GOTPC_LO: 2800 { 2801 /* .got(_GLOBAL_OFFSET_TABLE_) - pc relocation 2802 bl .+4 2803 seth rx,#high(_GLOBAL_OFFSET_TABLE_) 2804 or3 rx,rx,#low(_GLOBAL_OFFSET_TABLE_ +4) 2805 or 2806 bl .+4 2807 seth rx,#shigh(_GLOBAL_OFFSET_TABLE_) 2808 add3 rx,rx,#low(_GLOBAL_OFFSET_TABLE_ +4) 2809 */ 2810 relocation = sgot->output_section->vma; 2811 relocation -= (input_section->output_section->vma 2812 + input_section->output_offset 2813 + rel->r_offset); 2814 if ((r_type == R_M32R_GOTPC_HI_SLO) 2815 && ((relocation + rel->r_addend) & 0x8000)) 2816 rel->r_addend += 0x10000; 2817 2818 break; 2819 } 2820 case R_M32R_GOT16_HI_ULO: 2821 case R_M32R_GOT16_HI_SLO: 2822 case R_M32R_GOT16_LO: 2823 /* Fall through. */ 2824 case R_M32R_GOT24: 2825 /* Relocation is to the entry for this symbol in the global 2826 offset table. */ 2827 BFD_ASSERT (sgot != NULL); 2828 2829 if (h != NULL) 2830 { 2831 bfd_boolean dyn; 2832 bfd_vma off; 2833 2834 off = h->got.offset; 2835 BFD_ASSERT (off != (bfd_vma) -1); 2836 2837 dyn = htab->root.dynamic_sections_created; 2838 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h) 2839 || (info->shared 2840 && (info->symbolic 2841 || h->dynindx == -1 2842 || (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL)) 2843 && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR))) 2844 { 2845 /* This is actually a static link, or it is a 2846 -Bsymbolic link and the symbol is defined 2847 locally, or the symbol was forced to be local 2848 because of a version file. We must initialize 2849 this entry in the global offset table. Since the 2850 offset must always be a multiple of 4, we use the 2851 least significant bit to record whether we have 2852 initialized it already. 2853 2854 When doing a dynamic link, we create a .rela.got 2855 relocation entry to initialize the value. This 2856 is done in the finish_dynamic_symbol routine. */ 2857 if ((off & 1) != 0) 2858 off &= ~1; 2859 else 2860 { 2861 bfd_put_32 (output_bfd, relocation, 2862 sgot->contents + off); 2863 h->got.offset |= 1; 2864 } 2865 } 2866 2867 relocation = sgot->output_offset + off; 2868 } 2869 else 2870 { 2871 bfd_vma off; 2872 bfd_byte *loc; 2873 2874 BFD_ASSERT (local_got_offsets != NULL 2875 && local_got_offsets[r_symndx] != (bfd_vma) -1); 2876 2877 off = local_got_offsets[r_symndx]; 2878 2879 /* The offset must always be a multiple of 4. We use 2880 the least significant bit to record whether we have 2881 already processed this entry. */ 2882 if ((off & 1) != 0) 2883 off &= ~1; 2884 else 2885 { 2886 bfd_put_32 (output_bfd, relocation, sgot->contents + off); 2887 2888 if (info->shared) 2889 { 2890 asection *srelgot; 2891 Elf_Internal_Rela outrel; 2892 2893 /* We need to generate a R_M32R_RELATIVE reloc 2894 for the dynamic linker. */ 2895 srelgot = bfd_get_section_by_name (dynobj, ".rela.got"); 2896 BFD_ASSERT (srelgot != NULL); 2897 2898 outrel.r_offset = (sgot->output_section->vma 2899 + sgot->output_offset 2900 + off); 2901 outrel.r_info = ELF32_R_INFO (0, R_M32R_RELATIVE); 2902 outrel.r_addend = relocation; 2903 loc = srelgot->contents; 2904 loc += srelgot->reloc_count * sizeof(Elf32_External_Rela); 2905 bfd_elf32_swap_reloca_out (output_bfd, &outrel,loc); 2906 ++srelgot->reloc_count; 2907 } 2908 2909 local_got_offsets[r_symndx] |= 1; 2910 } 2911 2912 relocation = sgot->output_offset + off; 2913 } 2914 if ((r_type == R_M32R_GOT16_HI_SLO) 2915 && ((relocation + rel->r_addend) & 0x8000)) 2916 rel->r_addend += 0x10000; 2917 2918 break; 2919 2920 case R_M32R_26_PLTREL: 2921 /* Relocation is to the entry for this symbol in the 2922 procedure linkage table. */ 2923 2924 /* The native assembler will generate a 26_PLTREL reloc 2925 for a local symbol if you assemble a call from one 2926 section to another when using -K pic. */ 2927 if (h == NULL) 2928 break; 2929 2930 //if (ELF_ST_VISIBILITY (h->other) == STV_INTERNAL 2931 // || ELF_ST_VISIBILITY (h->other) == STV_HIDDEN) 2932 // break; 2933 if (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) 2934 break; 2935 2936 if (h->plt.offset == (bfd_vma) -1) 2937 { 2938 /* We didn't make a PLT entry for this symbol. This 2939 happens when statically linking PIC code, or when 2940 using -Bsymbolic. */ 2941 break; 2942 } 2943 2944 relocation = (splt->output_section->vma 2945 + splt->output_offset 2946 + h->plt.offset); 2947 break; 2948 2949 case R_M32R_HI16_SLO_RELA: 2950 { 2951 if ((relocation + rel->r_addend) & 0x8000) 2952 { 2953 rel->r_addend += 0x10000; 2954 } 2955 } 2956 /* Fall through. */ 2957 case R_M32R_16_RELA: 2958 case R_M32R_24_RELA: 2959 case R_M32R_32_RELA: 2960 case R_M32R_18_PCREL_RELA: 2961 case R_M32R_26_PCREL_RELA: 2962 case R_M32R_HI16_ULO_RELA: 2963 case R_M32R_LO16_RELA: 2964 case R_M32R_SDA16_RELA: 2965 if (info->shared 2966 && r_symndx != 0 2967 && (input_section->flags & SEC_ALLOC) != 0 2968 && ((r_type != R_M32R_18_PCREL_RELA 2969 && r_type != R_M32R_26_PCREL_RELA) 2970 || (h != NULL 2971 && h->dynindx != -1 2972 && (! info->symbolic 2973 || (h->elf_link_hash_flags 2974 & ELF_LINK_HASH_DEF_REGULAR) == 0)))) 2975 { 2976 Elf_Internal_Rela outrel; 2977 bfd_boolean skip, relocate; 2978 bfd_byte *loc; 2979 2980 /* When generating a shared object, these relocations 2981 are copied into the output file to be resolved at run 2982 time. */ 2983 2984 if (sreloc == NULL) 2985 { 2986 const char *name; 2987 2988 name = (bfd_elf_string_from_elf_section 2989 (input_bfd, 2990 elf_elfheader (input_bfd)->e_shstrndx, 2991 elf_section_data (input_section)->rel_hdr.sh_name)); 2992 if (name == NULL) 2993 return FALSE; 2994 2995 BFD_ASSERT (strncmp (name, ".rela", 5) == 0 2996 && strcmp (bfd_get_section_name (input_bfd, 2997 input_section), 2998 name + 5) == 0); 2999 3000 sreloc = bfd_get_section_by_name (dynobj, name); 3001 BFD_ASSERT (sreloc != NULL); 3002 } 3003 3004 skip = FALSE; 3005 relocate = FALSE; 3006 3007 outrel.r_offset = _bfd_elf_section_offset (output_bfd, 3008 info, 3009 input_section, 3010 rel->r_offset); 3011 if (outrel.r_offset == (bfd_vma) -1) 3012 skip = TRUE; 3013 else if (outrel.r_offset == (bfd_vma) -2) 3014 skip = TRUE, relocate = TRUE; 3015 outrel.r_offset += (input_section->output_section->vma 3016 + input_section->output_offset); 3017 3018 if (skip) 3019 memset (&outrel, 0, sizeof outrel); 3020 else if (r_type == R_M32R_18_PCREL_RELA 3021 || r_type == R_M32R_26_PCREL_RELA) 3022 { 3023 BFD_ASSERT (h != NULL && h->dynindx != -1); 3024 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type); 3025 outrel.r_addend = rel->r_addend; 3026 } 3027 else 3028 { 3029 /* h->dynindx may be -1 if this symbol was marked to 3030 become local. */ 3031 if (h == NULL 3032 || ((info->symbolic || h->dynindx == -1) 3033 && (h->elf_link_hash_flags 3034 & ELF_LINK_HASH_DEF_REGULAR) != 0)) 3035 { 3036 relocate = TRUE; 3037 outrel.r_info = ELF32_R_INFO (0, R_M32R_RELATIVE); 3038 outrel.r_addend = relocation + rel->r_addend; 3039 } 3040 else 3041 { 3042 BFD_ASSERT (h->dynindx != -1); 3043 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type); 3044 outrel.r_addend = relocation + rel->r_addend; 3045 } 3046 } 3047 3048 loc = sreloc->contents; 3049 loc += sreloc->reloc_count * sizeof(Elf32_External_Rela); 3050 bfd_elf32_swap_reloca_out (output_bfd, &outrel,loc); 3051 ++sreloc->reloc_count; 3052 3053 /* If this reloc is against an external symbol, we do 3054 not want to fiddle with the addend. Otherwise, we 3055 need to include the symbol value so that it becomes 3056 an addend for the dynamic reloc. */ 3057 if (! relocate) 3058 continue; 3059 } 3060 break; 3061 3062 case (int) R_M32R_10_PCREL : 3063 r = m32r_elf_do_10_pcrel_reloc (input_bfd, howto, input_section, 3064 contents, offset, 3065 sec, relocation, addend); 3066 goto check_reloc; 3067 3068 case (int) R_M32R_HI16_SLO : 3069 case (int) R_M32R_HI16_ULO : 3070 { 3071 Elf_Internal_Rela *lorel; 3072 3073 /* We allow an arbitrary number of HI16 relocs before the 3074 LO16 reloc. This permits gcc to emit the HI and LO relocs 3075 itself. */ 3076 for (lorel = rel + 1; 3077 (lorel < relend 3078 && (ELF32_R_TYPE (lorel->r_info) == R_M32R_HI16_SLO 3079 || ELF32_R_TYPE (lorel->r_info) == R_M32R_HI16_ULO)); 3080 lorel++) 3081 continue; 3082 if (lorel < relend 3083 && ELF32_R_TYPE (lorel->r_info) == R_M32R_LO16) 3084 { 3085 m32r_elf_relocate_hi16 (input_bfd, r_type, rel, lorel, 3086 contents, relocation + addend); 3087 r = bfd_reloc_ok; 3088 } 3089 else 3090 r = _bfd_final_link_relocate (howto, input_bfd, input_section, 3091 contents, offset, 3092 relocation, addend); 3093 } 3094 3095 goto check_reloc; 3096 3097 case (int) R_M32R_SDA16 : 3098 { 3099 const char *name; 3100 3101 BFD_ASSERT (sec != NULL); 3102 name = bfd_get_section_name (abfd, sec); 3103 3104 if (strcmp (name, ".sdata") == 0 3105 || strcmp (name, ".sbss") == 0 3106 || strcmp (name, ".scommon") == 0) 3107 { 3108 bfd_vma sda_base; 3109 bfd *out_bfd = sec->output_section->owner; 3110 3111 r = m32r_elf_final_sda_base (out_bfd, info, 3112 &errmsg, 3113 &sda_base); 3114 if (r != bfd_reloc_ok) 3115 { 3116 ret = FALSE; 3117 goto check_reloc; 3118 } 3119 3120 /* At this point `relocation' contains the object's 3121 address. */ 3122 relocation -= sda_base; 3123 /* Now it contains the offset from _SDA_BASE_. */ 3124 } 3125 else 3126 { 3127 (*_bfd_error_handler) 3128 (_("%s: The target (%s) of an %s relocation is in the wrong section (%s)"), 3129 bfd_archive_filename (input_bfd), 3130 sym_name, 3131 m32r_elf_howto_table[(int) r_type].name, 3132 bfd_get_section_name (abfd, sec)); 3133 /*bfd_set_error (bfd_error_bad_value); ??? why? */ 3134 ret = FALSE; 3135 continue; 3136 } 3137 } 3138 /* fall through */ 3139 3140 default : /* OLD_M32R_RELOC */ 3141 3142 r = _bfd_final_link_relocate (howto, input_bfd, input_section, 3143 contents, offset, 3144 relocation, addend); 3145 goto check_reloc; 3146 } 3147 3148 r = _bfd_final_link_relocate (howto, input_bfd, input_section, 3149 contents, rel->r_offset, 3150 relocation, rel->r_addend); 3151 3152 } 3153 3154 check_reloc: 3155 3156 if (r != bfd_reloc_ok) 3157 { 3158 /* FIXME: This should be generic enough to go in a utility. */ 3159 const char *name; 3160 3161 if (h != NULL) 3162 name = h->root.root.string; 3163 else 3164 { 3165 name = (bfd_elf_string_from_elf_section 3166 (input_bfd, symtab_hdr->sh_link, sym->st_name)); 3167 if (name == NULL || *name == '\0') 3168 name = bfd_section_name (input_bfd, sec); 3169 } 3170 3171 if (errmsg != NULL) 3172 goto common_error; 3173 3174 switch (r) 3175 { 3176 case bfd_reloc_overflow: 3177 if (! ((*info->callbacks->reloc_overflow) 3178 (info, name, howto->name, (bfd_vma) 0, 3179 input_bfd, input_section, offset))) 3180 return FALSE; 3181 break; 3182 3183 case bfd_reloc_undefined: 3184 if (! ((*info->callbacks->undefined_symbol) 3185 (info, name, input_bfd, input_section, 3186 offset, TRUE))) 3187 return FALSE; 3188 break; 3189 3190 case bfd_reloc_outofrange: 3191 errmsg = _("internal error: out of range error"); 3192 goto common_error; 3193 3194 case bfd_reloc_notsupported: 3195 errmsg = _("internal error: unsupported relocation error"); 3196 goto common_error; 3197 3198 case bfd_reloc_dangerous: 3199 errmsg = _("internal error: dangerous error"); 3200 goto common_error; 3201 3202 default: 3203 errmsg = _("internal error: unknown error"); 3204 /* fall through */ 3205 3206 common_error: 3207 if (!((*info->callbacks->warning) 3208 (info, errmsg, name, input_bfd, input_section, 3209 offset))) 3210 return FALSE; 3211 break; 3212 } 3213 } 3214 } 3215 3216 return ret; 3217 } 3218 3219 /* Finish up dynamic symbol handling. We set the contents of various 3220 dynamic sections here. */ 3221 static bfd_boolean 3222 m32r_elf_finish_dynamic_symbol (output_bfd, info, h, sym) 3223 bfd *output_bfd; 3224 struct bfd_link_info *info; 3225 struct elf_link_hash_entry *h; 3226 Elf_Internal_Sym *sym; 3227 { 3228 struct elf_m32r_link_hash_table *htab; 3229 bfd *dynobj; 3230 bfd_byte *loc; 3231 3232 #ifdef DEBUG_PIC 3233 printf("m32r_elf_finish_dynamic_symbol()\n"); 3234 #endif 3235 3236 htab = m32r_elf_hash_table (info); 3237 dynobj = htab->root.dynobj; 3238 3239 if (h->plt.offset != (bfd_vma) -1) 3240 { 3241 asection *splt; 3242 asection *sgot; 3243 asection *srela; 3244 3245 bfd_vma plt_index; 3246 bfd_vma got_offset; 3247 Elf_Internal_Rela rela; 3248 3249 /* This symbol has an entry in the procedure linkage table. Set 3250 it up. */ 3251 3252 BFD_ASSERT (h->dynindx != -1); 3253 3254 splt = htab->splt; 3255 sgot = htab->sgotplt; 3256 srela = htab->srelplt; 3257 BFD_ASSERT (splt != NULL && sgot != NULL && srela != NULL); 3258 3259 /* Get the index in the procedure linkage table which 3260 corresponds to this symbol. This is the index of this symbol 3261 in all the symbols for which we are making plt entries. The 3262 first entry in the procedure linkage table is reserved. */ 3263 plt_index = h->plt.offset / PLT_ENTRY_SIZE - 1; 3264 3265 /* Get the offset into the .got table of the entry that 3266 corresponds to this function. Each .got entry is 4 bytes. 3267 The first three are reserved. */ 3268 got_offset = (plt_index + 3) * 4; 3269 3270 /* Fill in the entry in the procedure linkage table. */ 3271 if (! info->shared) 3272 { 3273 bfd_put_32 (output_bfd, 3274 (PLT_ENTRY_WORD0b 3275 + (((sgot->output_section->vma 3276 + sgot->output_offset 3277 + got_offset) >> 16) & 0xffff)), 3278 splt->contents + h->plt.offset); 3279 bfd_put_32 (output_bfd, 3280 (PLT_ENTRY_WORD1b 3281 + ((sgot->output_section->vma 3282 + sgot->output_offset 3283 + got_offset) & 0xffff)), 3284 splt->contents + h->plt.offset + 4); 3285 bfd_put_32 (output_bfd, PLT_ENTRY_WORD2, 3286 splt->contents + h->plt.offset + 8); 3287 bfd_put_32 (output_bfd, 3288 (PLT_ENTRY_WORD3 3289 + plt_index * sizeof (Elf32_External_Rela)), 3290 splt->contents + h->plt.offset + 12); 3291 bfd_put_32 (output_bfd, 3292 (PLT_ENTRY_WORD4 3293 + (((unsigned int) ((- (h->plt.offset + 16)) >> 2)) & 0xffffff)), 3294 splt->contents + h->plt.offset + 16); 3295 } 3296 else 3297 { 3298 bfd_put_32 (output_bfd, 3299 PLT_ENTRY_WORD0 + got_offset, 3300 splt->contents + h->plt.offset); 3301 bfd_put_32 (output_bfd, PLT_ENTRY_WORD1, 3302 splt->contents + h->plt.offset + 4); 3303 bfd_put_32 (output_bfd, PLT_ENTRY_WORD2, 3304 splt->contents + h->plt.offset + 8); 3305 bfd_put_32 (output_bfd, 3306 (PLT_ENTRY_WORD3 3307 + plt_index * sizeof (Elf32_External_Rela)), 3308 splt->contents + h->plt.offset + 12); 3309 bfd_put_32 (output_bfd, 3310 (PLT_ENTRY_WORD4 3311 + (((unsigned int) ((- (h->plt.offset + 16)) >> 2)) & 0xffffff)), 3312 splt->contents + h->plt.offset + 16); 3313 } 3314 3315 /* Fill in the entry in the global offset table. */ 3316 bfd_put_32 (output_bfd, 3317 (splt->output_section->vma 3318 + splt->output_offset 3319 + h->plt.offset 3320 + 12), /* same offset */ 3321 sgot->contents + got_offset); 3322 3323 /* Fill in the entry in the .rela.plt section. */ 3324 rela.r_offset = (sgot->output_section->vma 3325 + sgot->output_offset 3326 + got_offset); 3327 rela.r_info = ELF32_R_INFO (h->dynindx, R_M32R_JMP_SLOT); 3328 rela.r_addend = 0; 3329 loc = srela->contents; 3330 loc += plt_index * sizeof(Elf32_External_Rela); 3331 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); 3332 3333 if ((h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0) 3334 { 3335 /* Mark the symbol as undefined, rather than as defined in 3336 the .plt section. Leave the value alone. */ 3337 sym->st_shndx = SHN_UNDEF; 3338 } 3339 } 3340 3341 if (h->got.offset != (bfd_vma) -1) 3342 { 3343 asection *sgot; 3344 asection *srela; 3345 Elf_Internal_Rela rela; 3346 3347 /* This symbol has an entry in the global offset table. Set it 3348 up. */ 3349 3350 sgot = htab->sgot; 3351 srela = htab->srelgot; 3352 BFD_ASSERT (sgot != NULL && srela != NULL); 3353 3354 rela.r_offset = (sgot->output_section->vma 3355 + sgot->output_offset 3356 + (h->got.offset &~ 1)); 3357 3358 /* If this is a -Bsymbolic link, and the symbol is defined 3359 locally, we just want to emit a RELATIVE reloc. Likewise if 3360 the symbol was forced to be local because of a version file. 3361 The entry in the global offset table will already have been 3362 initialized in the relocate_section function. */ 3363 if (info->shared 3364 && (info->symbolic 3365 || h->dynindx == -1 3366 || (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL)) 3367 && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR)) 3368 { 3369 rela.r_info = ELF32_R_INFO (0, R_M32R_RELATIVE); 3370 rela.r_addend = (h->root.u.def.value 3371 + h->root.u.def.section->output_section->vma 3372 + h->root.u.def.section->output_offset); 3373 } 3374 else 3375 { 3376 BFD_ASSERT((h->got.offset & 1) == 0); 3377 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + h->got.offset); 3378 rela.r_info = ELF32_R_INFO (h->dynindx, R_M32R_GLOB_DAT); 3379 rela.r_addend = 0; 3380 } 3381 3382 loc = srela->contents; 3383 loc += srela->reloc_count * sizeof(Elf32_External_Rela); 3384 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); 3385 ++srela->reloc_count; 3386 } 3387 3388 if ((h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_COPY) != 0) 3389 { 3390 asection *s; 3391 Elf_Internal_Rela rela; 3392 3393 /* This symbols needs a copy reloc. Set it up. */ 3394 3395 BFD_ASSERT (h->dynindx != -1 3396 && (h->root.type == bfd_link_hash_defined 3397 || h->root.type == bfd_link_hash_defweak)); 3398 3399 s = bfd_get_section_by_name (h->root.u.def.section->owner, 3400 ".rela.bss"); 3401 BFD_ASSERT (s != NULL); 3402 3403 rela.r_offset = (h->root.u.def.value 3404 + h->root.u.def.section->output_section->vma 3405 + h->root.u.def.section->output_offset); 3406 rela.r_info = ELF32_R_INFO (h->dynindx, R_M32R_COPY); 3407 rela.r_addend = 0; 3408 loc = s->contents; 3409 loc += s->reloc_count * sizeof(Elf32_External_Rela); 3410 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); 3411 ++s->reloc_count; 3412 } 3413 3414 /* Mark some specially defined symbols as absolute. */ 3415 if (strcmp (h->root.root.string, "_DYNAMIC") == 0 3416 || strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0) 3417 sym->st_shndx = SHN_ABS; 3418 3419 return TRUE; 3420 } 3421 3422 3423 /* Finish up the dynamic sections. */ 3424 3425 static bfd_boolean 3426 m32r_elf_finish_dynamic_sections (output_bfd, info) 3427 bfd *output_bfd; 3428 struct bfd_link_info *info; 3429 { 3430 struct elf_m32r_link_hash_table *htab; 3431 bfd *dynobj; 3432 asection *sdyn; 3433 asection *sgot; 3434 3435 #ifdef DEBUG_PIC 3436 printf("m32r_elf_finish_dynamic_sections()\n"); 3437 #endif 3438 3439 htab = m32r_elf_hash_table (info); 3440 dynobj = htab->root.dynobj; 3441 3442 sgot = htab->sgotplt; 3443 sdyn = bfd_get_section_by_name (dynobj, ".dynamic"); 3444 3445 if (htab->root.dynamic_sections_created) 3446 { 3447 asection *splt; 3448 Elf32_External_Dyn *dyncon, *dynconend; 3449 3450 BFD_ASSERT (sgot != NULL && sdyn != NULL); 3451 3452 dyncon = (Elf32_External_Dyn *) sdyn->contents; 3453 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->_raw_size); 3454 3455 for (; dyncon < dynconend; dyncon++) 3456 { 3457 Elf_Internal_Dyn dyn; 3458 const char *name; 3459 asection *s; 3460 3461 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn); 3462 3463 switch (dyn.d_tag) 3464 { 3465 default: 3466 break; 3467 3468 case DT_PLTGOT: 3469 name = ".got"; 3470 s = htab->sgot->output_section; 3471 goto get_vma; 3472 case DT_JMPREL: 3473 name = ".rela.plt"; 3474 s = htab->srelplt->output_section; 3475 get_vma: 3476 BFD_ASSERT (s != NULL); 3477 dyn.d_un.d_ptr = s->vma; 3478 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); 3479 break; 3480 3481 case DT_PLTRELSZ: 3482 s = htab->srelplt->output_section; 3483 BFD_ASSERT (s != NULL); 3484 if (s->_cooked_size != 0) 3485 dyn.d_un.d_val = s->_cooked_size; 3486 else 3487 dyn.d_un.d_val = s->_raw_size; 3488 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); 3489 break; 3490 3491 case DT_RELASZ: 3492 /* My reading of the SVR4 ABI indicates that the 3493 procedure linkage table relocs (DT_JMPREL) should be 3494 included in the overall relocs (DT_RELA). This is 3495 what Solaris does. However, UnixWare can not handle 3496 that case. Therefore, we override the DT_RELASZ entry 3497 here to make it not include the JMPREL relocs. Since 3498 the linker script arranges for .rela.plt to follow all 3499 other relocation sections, we don't have to worry 3500 about changing the DT_RELA entry. */ 3501 if (htab->srelplt != NULL) 3502 { 3503 s = htab->srelplt->output_section; 3504 if (s->_cooked_size != 0) 3505 dyn.d_un.d_val -= s->_cooked_size; 3506 else 3507 dyn.d_un.d_val -= s->_raw_size; 3508 } 3509 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); 3510 break; 3511 } 3512 } 3513 3514 /* Fill in the first entry in the procedure linkage table. */ 3515 splt = htab->splt; 3516 if (splt && splt->_raw_size > 0) 3517 { 3518 if (info->shared) 3519 { 3520 bfd_put_32 (output_bfd, PLT0_PIC_ENTRY_WORD0, splt->contents); 3521 bfd_put_32 (output_bfd, PLT0_PIC_ENTRY_WORD1, splt->contents + 4); 3522 bfd_put_32 (output_bfd, PLT0_PIC_ENTRY_WORD2, splt->contents + 8); 3523 bfd_put_32 (output_bfd, PLT0_PIC_ENTRY_WORD3, splt->contents + 12); 3524 bfd_put_32 (output_bfd, PLT0_PIC_ENTRY_WORD4, splt->contents + 16); 3525 } 3526 else 3527 { 3528 unsigned long addr; 3529 /* addr = .got + 4 */ 3530 addr = sgot->output_section->vma + sgot->output_offset + 4; 3531 bfd_put_32 (output_bfd, 3532 PLT0_ENTRY_WORD0 | ((addr >> 16) & 0xffff), 3533 splt->contents); 3534 bfd_put_32 (output_bfd, 3535 PLT0_ENTRY_WORD1 | (addr & 0xffff), 3536 splt->contents + 4); 3537 bfd_put_32 (output_bfd, PLT0_ENTRY_WORD2, splt->contents + 8); 3538 bfd_put_32 (output_bfd, PLT0_ENTRY_WORD3, splt->contents + 12); 3539 bfd_put_32 (output_bfd, PLT0_ENTRY_WORD4, splt->contents + 16); 3540 } 3541 3542 elf_section_data (splt->output_section)->this_hdr.sh_entsize = 3543 PLT_ENTRY_SIZE; 3544 } 3545 } 3546 3547 /* Fill in the first three entries in the global offset table. */ 3548 if (sgot && sgot->_raw_size > 0) 3549 { 3550 if (sdyn == NULL) 3551 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents); 3552 else 3553 bfd_put_32 (output_bfd, 3554 sdyn->output_section->vma + sdyn->output_offset, 3555 sgot->contents); 3556 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 4); 3557 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 8); 3558 3559 elf_section_data (sgot->output_section)->this_hdr.sh_entsize = 4; 3560 } 3561 3562 return TRUE; 3563 } 3564 3565 3566 #if 0 /* relaxing not supported yet */ 3567 3568 /* This function handles relaxing for the m32r. 3569 Relaxing on the m32r is tricky because of instruction alignment 3570 requirements (4 byte instructions must be aligned on 4 byte boundaries). 3571 3572 The following relaxing opportunities are handled: 3573 3574 seth/add3/jl -> bl24 or bl8 3575 seth/add3 -> ld24 3576 3577 It would be nice to handle bl24 -> bl8 but given: 3578 3579 - 4 byte insns must be on 4 byte boundaries 3580 - branch instructions only branch to insns on 4 byte boundaries 3581 3582 this isn't much of a win because the insn in the 2 "deleted" bytes 3583 must become a nop. With some complexity some real relaxation could be 3584 done but the frequency just wouldn't make it worth it; it's better to 3585 try to do all the code compaction one can elsewhere. 3586 When the chip supports parallel 16 bit insns, things may change. 3587 */ 3588 3589 static bfd_boolean 3590 m32r_elf_relax_section (abfd, sec, link_info, again) 3591 bfd *abfd; 3592 asection *sec; 3593 struct bfd_link_info *link_info; 3594 bfd_boolean *again; 3595 { 3596 Elf_Internal_Shdr *symtab_hdr; 3597 /* The Rela structures are used here because that's what 3598 _bfd_elf_link_read_relocs uses [for convenience - it sets the addend 3599 field to 0]. */ 3600 Elf_Internal_Rela *internal_relocs = NULL; 3601 Elf_Internal_Rela *irel, *irelend; 3602 bfd_byte *contents = NULL; 3603 Elf_Internal_Sym *isymbuf = NULL; 3604 3605 /* Assume nothing changes. */ 3606 *again = FALSE; 3607 3608 /* We don't have to do anything for a relocatable link, if 3609 this section does not have relocs, or if this is not a 3610 code section. */ 3611 if (link_info->relocatable 3612 || (sec->flags & SEC_RELOC) == 0 3613 || sec->reloc_count == 0 3614 || (sec->flags & SEC_CODE) == 0 3615 || 0 /* FIXME: check SHF_M32R_CAN_RELAX */) 3616 return TRUE; 3617 3618 /* If this is the first time we have been called for this section, 3619 initialize the cooked size. */ 3620 if (sec->_cooked_size == 0) 3621 sec->_cooked_size = sec->_raw_size; 3622 3623 symtab_hdr = &elf_tdata (abfd)->symtab_hdr; 3624 3625 /* Get a copy of the native relocations. */ 3626 internal_relocs = (_bfd_elf_link_read_relocs 3627 (abfd, sec, (PTR) NULL, (Elf_Internal_Rela *) NULL, 3628 link_info->keep_memory)); 3629 if (internal_relocs == NULL) 3630 goto error_return; 3631 3632 /* Walk through them looking for relaxing opportunities. */ 3633 irelend = internal_relocs + sec->reloc_count; 3634 for (irel = internal_relocs; irel < irelend; irel++) 3635 { 3636 bfd_vma symval; 3637 3638 /* If this isn't something that can be relaxed, then ignore 3639 this reloc. */ 3640 if (ELF32_R_TYPE (irel->r_info) != (int) R_M32R_HI16_SLO) 3641 continue; 3642 3643 /* Get the section contents if we haven't done so already. */ 3644 if (contents == NULL) 3645 { 3646 /* Get cached copy if it exists. */ 3647 if (elf_section_data (sec)->this_hdr.contents != NULL) 3648 contents = elf_section_data (sec)->this_hdr.contents; 3649 else 3650 { 3651 /* Go get them off disk. */ 3652 contents = (bfd_byte *) bfd_malloc (sec->_raw_size); 3653 if (contents == NULL) 3654 goto error_return; 3655 3656 if (! bfd_get_section_contents (abfd, sec, contents, 3657 (file_ptr) 0, sec->_raw_size)) 3658 goto error_return; 3659 } 3660 } 3661 3662 /* Read this BFD's local symbols if we haven't done so already. */ 3663 if (isymbuf == NULL && symtab_hdr->sh_info != 0) 3664 { 3665 isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents; 3666 if (isymbuf == NULL) 3667 isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr, 3668 symtab_hdr->sh_info, 0, 3669 NULL, NULL, NULL); 3670 if (isymbuf == NULL) 3671 goto error_return; 3672 } 3673 3674 /* Get the value of the symbol referred to by the reloc. */ 3675 if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info) 3676 { 3677 /* A local symbol. */ 3678 Elf_Internal_Sym *isym; 3679 asection *sym_sec; 3680 3681 isym = isymbuf + ELF32_R_SYM (irel->r_info), 3682 sym_sec = bfd_section_from_elf_index (abfd, isym->st_shndx); 3683 symval = (isym->st_value 3684 + sym_sec->output_section->vma 3685 + sym_sec->output_offset); 3686 } 3687 else 3688 { 3689 unsigned long indx; 3690 struct elf_link_hash_entry *h; 3691 3692 /* An external symbol. */ 3693 indx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info; 3694 h = elf_sym_hashes (abfd)[indx]; 3695 BFD_ASSERT (h != NULL); 3696 if (h->root.type != bfd_link_hash_defined 3697 && h->root.type != bfd_link_hash_defweak) 3698 { 3699 /* This appears to be a reference to an undefined 3700 symbol. Just ignore it--it will be caught by the 3701 regular reloc processing. */ 3702 continue; 3703 } 3704 3705 symval = (h->root.u.def.value 3706 + h->root.u.def.section->output_section->vma 3707 + h->root.u.def.section->output_offset); 3708 } 3709 3710 /* For simplicity of coding, we are going to modify the section 3711 contents, the section relocs, and the BFD symbol table. We 3712 must tell the rest of the code not to free up this 3713 information. It would be possible to instead create a table 3714 of changes which have to be made, as is done in coff-mips.c; 3715 that would be more work, but would require less memory when 3716 the linker is run. */ 3717 3718 /* Try to change a seth/add3/jl subroutine call to bl24 or bl8. 3719 This sequence is generated by the compiler when compiling in 3720 32 bit mode. Also look for seth/add3 -> ld24. */ 3721 3722 if (ELF32_R_TYPE (irel->r_info) == (int) R_M32R_HI16_SLO) 3723 { 3724 Elf_Internal_Rela *nrel; 3725 bfd_vma pc = (sec->output_section->vma + sec->output_offset 3726 + irel->r_offset); 3727 bfd_signed_vma pcrel_value = symval - pc; 3728 unsigned int code,reg; 3729 int addend,nop_p,bl8_p,to_delete; 3730 3731 /* The tests are ordered so that we get out as quickly as possible 3732 if this isn't something we can relax, taking into account that 3733 we are looking for two separate possibilities (jl/ld24). */ 3734 3735 /* Do nothing if no room in the section for this to be what we're 3736 looking for. */ 3737 if (irel->r_offset > sec->_cooked_size - 8) 3738 continue; 3739 3740 /* Make sure the next relocation applies to the next 3741 instruction and that it's the add3's reloc. */ 3742 nrel = irel + 1; 3743 if (nrel == irelend 3744 || irel->r_offset + 4 != nrel->r_offset 3745 || ELF32_R_TYPE (nrel->r_info) != (int) R_M32R_LO16) 3746 continue; 3747 3748 /* See if the instructions are seth/add3. */ 3749 /* FIXME: This is where macros from cgen can come in. */ 3750 code = bfd_get_16 (abfd, contents + irel->r_offset + 0); 3751 if ((code & 0xf0ff) != 0xd0c0) 3752 continue; /* not seth rN,foo */ 3753 reg = (code & 0x0f00) >> 8; 3754 code = bfd_get_16 (abfd, contents + irel->r_offset + 4); 3755 if (code != (0x80a0 | reg | (reg << 8))) 3756 continue; /* not add3 rN,rN,foo */ 3757 3758 /* At this point we've confirmed we have seth/add3. Now check 3759 whether the next insn is a jl, in which case try to change this 3760 to bl24 or bl8. */ 3761 3762 /* Ensure the branch target is in range. 3763 The bl24 instruction has a 24 bit operand which is the target 3764 address right shifted by 2, giving a signed range of 26 bits. 3765 Note that 4 bytes are added to the high value because the target 3766 will be at least 4 bytes closer if we can relax. It'll actually 3767 be 4 or 8 bytes closer, but we don't know which just yet and 3768 the difference isn't significant enough to worry about. */ 3769 #if !USE_REL /* put in for learning purposes */ 3770 pcrel_value += irel->r_addend; 3771 #else 3772 addend = bfd_get_signed_16 (abfd, contents + irel->r_offset + 2); 3773 pcrel_value += addend; 3774 #endif 3775 3776 if (pcrel_value >= -(1 << 25) && pcrel_value < (1 << 25) + 4 3777 /* Do nothing if no room in the section for this to be what we're 3778 looking for. */ 3779 && (irel->r_offset <= sec->_cooked_size - 12) 3780 /* Ensure the next insn is "jl rN". */ 3781 && ((code = bfd_get_16 (abfd, contents + irel->r_offset + 8)), 3782 code != (0x1ec0 | reg))) 3783 { 3784 /* We can relax to bl24/bl8. */ 3785 3786 /* See if there's a nop following the jl. 3787 Also see if we can use a bl8 insn. */ 3788 code = bfd_get_16 (abfd, contents + irel->r_offset + 10); 3789 nop_p = (code & 0x7fff) == NOP_INSN; 3790 bl8_p = pcrel_value >= -0x200 && pcrel_value < 0x200; 3791 3792 if (bl8_p) 3793 { 3794 /* Change "seth rN,foo" to "bl8 foo || nop". 3795 We OR in CODE just in case it's not a nop (technically, 3796 CODE currently must be a nop, but for cleanness we 3797 allow it to be anything). */ 3798 #if !USE_REL /* put in for learning purposes */ 3799 code = 0x7e000000 | MAKE_PARALLEL (code); 3800 #else 3801 code = (0x7e000000 + (((addend >> 2) & 0xff) << 16)) | MAKE_PARALLEL (code); 3802 #endif 3803 to_delete = 8; 3804 } 3805 else 3806 { 3807 /* Change the seth rN,foo to a bl24 foo. */ 3808 #if !USE_REL /* put in for learning purposes */ 3809 code = 0xfe000000; 3810 #else 3811 code = 0xfe000000 + ((addend >> 2) & 0xffffff); 3812 #endif 3813 to_delete = nop_p ? 8 : 4; 3814 } 3815 3816 bfd_put_32 (abfd, code, contents + irel->r_offset); 3817 3818 /* Set the new reloc type. */ 3819 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (nrel->r_info), 3820 bl8_p ? R_M32R_10_PCREL : R_M32R_26_PCREL); 3821 3822 /* Delete the add3 reloc by making it a null reloc. */ 3823 nrel->r_info = ELF32_R_INFO (ELF32_R_SYM (nrel->r_info), 3824 R_M32R_NONE); 3825 } 3826 else if (addend >= 0 3827 && symval + addend <= 0xffffff) 3828 { 3829 /* We can relax to ld24. */ 3830 3831 code = 0xe0000000 | (reg << 24) | (addend & 0xffffff); 3832 bfd_put_32 (abfd, code, contents + irel->r_offset); 3833 to_delete = 4; 3834 /* Tell the following code a nop filler isn't needed. */ 3835 nop_p = 1; 3836 } 3837 else 3838 { 3839 /* Can't do anything here. */ 3840 continue; 3841 } 3842 3843 /* Note that we've changed the relocs, section contents, etc. */ 3844 elf_section_data (sec)->relocs = internal_relocs; 3845 elf_section_data (sec)->this_hdr.contents = contents; 3846 symtab_hdr->contents = (unsigned char *) isymbuf; 3847 3848 /* Delete TO_DELETE bytes of data. */ 3849 if (!m32r_elf_relax_delete_bytes (abfd, sec, 3850 irel->r_offset + 4, to_delete)) 3851 goto error_return; 3852 3853 /* Now that the following bytes have been moved into place, see if 3854 we need to replace the jl with a nop. This happens when we had 3855 to use a bl24 insn and the insn following the jl isn't a nop. 3856 Technically, this situation can't happen (since the insn can 3857 never be executed) but to be clean we do this. When the chip 3858 supports parallel 16 bit insns things may change. 3859 We don't need to do this in the case of relaxing to ld24, 3860 and the above code sets nop_p so this isn't done. */ 3861 if (! nop_p && to_delete == 4) 3862 bfd_put_16 (abfd, NOP_INSN, contents + irel->r_offset + 4); 3863 3864 /* That will change things, so we should relax again. 3865 Note that this is not required, and it may be slow. */ 3866 *again = TRUE; 3867 3868 continue; 3869 } 3870 3871 /* loop to try the next reloc */ 3872 } 3873 3874 if (isymbuf != NULL 3875 && symtab_hdr->contents != (unsigned char *) isymbuf) 3876 { 3877 if (! link_info->keep_memory) 3878 free (isymbuf); 3879 else 3880 { 3881 /* Cache the symbols for elf_link_input_bfd. */ 3882 symtab_hdr->contents = (unsigned char *) isymbuf; 3883 } 3884 } 3885 3886 if (contents != NULL 3887 && elf_section_data (sec)->this_hdr.contents != contents) 3888 { 3889 if (! link_info->keep_memory) 3890 free (contents); 3891 else 3892 { 3893 /* Cache the section contents for elf_link_input_bfd. */ 3894 elf_section_data (sec)->this_hdr.contents = contents; 3895 } 3896 } 3897 3898 if (internal_relocs != NULL 3899 && elf_section_data (sec)->relocs != internal_relocs) 3900 free (internal_relocs); 3901 3902 return TRUE; 3903 3904 error_return: 3905 if (isymbuf != NULL 3906 && symtab_hdr->contents != (unsigned char *) isymbuf) 3907 free (isymbuf); 3908 if (contents != NULL 3909 && elf_section_data (sec)->this_hdr.contents != contents) 3910 free (contents); 3911 if (internal_relocs != NULL 3912 && elf_section_data (sec)->relocs != internal_relocs) 3913 free (internal_relocs); 3914 3915 return FALSE; 3916 } 3917 3918 /* Delete some bytes from a section while relaxing. */ 3919 3920 static bfd_boolean 3921 m32r_elf_relax_delete_bytes (abfd, sec, addr, count) 3922 bfd *abfd; 3923 asection *sec; 3924 bfd_vma addr; 3925 int count; 3926 { 3927 Elf_Internal_Shdr *symtab_hdr; 3928 int shndx; 3929 bfd_byte *contents; 3930 Elf_Internal_Rela *irel, *irelend; 3931 Elf_Internal_Rela *irelalign; 3932 bfd_vma toaddr; 3933 Elf_Internal_Sym *isym, *isymend; 3934 struct elf_link_hash_entry **sym_hashes; 3935 struct elf_link_hash_entry **end_hashes; 3936 unsigned int symcount; 3937 3938 shndx = _bfd_elf_section_from_bfd_section (abfd, sec); 3939 3940 contents = elf_section_data (sec)->this_hdr.contents; 3941 3942 /* The deletion must stop at the next ALIGN reloc for an aligment 3943 power larger than the number of bytes we are deleting. */ 3944 3945 irelalign = NULL; 3946 toaddr = sec->_cooked_size; 3947 3948 irel = elf_section_data (sec)->relocs; 3949 irelend = irel + sec->reloc_count; 3950 3951 /* Actually delete the bytes. */ 3952 memmove (contents + addr, contents + addr + count, toaddr - addr - count); 3953 sec->_cooked_size -= count; 3954 3955 /* Adjust all the relocs. */ 3956 for (irel = elf_section_data (sec)->relocs; irel < irelend; irel++) 3957 { 3958 /* Get the new reloc address. */ 3959 if ((irel->r_offset > addr 3960 && irel->r_offset < toaddr)) 3961 irel->r_offset -= count; 3962 } 3963 3964 /* Adjust the local symbols defined in this section. */ 3965 symtab_hdr = &elf_tdata (abfd)->symtab_hdr; 3966 isym = (Elf_Internal_Sym *) symtab_hdr->contents; 3967 for (isymend = isym + symtab_hdr->sh_info; isym < isymend; isym++) 3968 { 3969 if (isym->st_shndx == shndx 3970 && isym->st_value > addr 3971 && isym->st_value < toaddr) 3972 isym->st_value -= count; 3973 } 3974 3975 /* Now adjust the global symbols defined in this section. */ 3976 symcount = (symtab_hdr->sh_size / sizeof (Elf32_External_Sym) 3977 - symtab_hdr->sh_info); 3978 sym_hashes = elf_sym_hashes (abfd); 3979 end_hashes = sym_hashes + symcount; 3980 for (; sym_hashes < end_hashes; sym_hashes++) 3981 { 3982 struct elf_link_hash_entry *sym_hash = *sym_hashes; 3983 3984 if ((sym_hash->root.type == bfd_link_hash_defined 3985 || sym_hash->root.type == bfd_link_hash_defweak) 3986 && sym_hash->root.u.def.section == sec 3987 && sym_hash->root.u.def.value > addr 3988 && sym_hash->root.u.def.value < toaddr) 3989 { 3990 sym_hash->root.u.def.value -= count; 3991 } 3992 } 3993 3994 return TRUE; 3995 } 3996 3997 /* This is a version of bfd_generic_get_relocated_section_contents 3998 which uses m32r_elf_relocate_section. */ 3999 4000 static bfd_byte * 4001 m32r_elf_get_relocated_section_contents (output_bfd, link_info, link_order, 4002 data, relocatable, symbols) 4003 bfd *output_bfd; 4004 struct bfd_link_info *link_info; 4005 struct bfd_link_order *link_order; 4006 bfd_byte *data; 4007 bfd_boolean relocatable; 4008 asymbol **symbols; 4009 { 4010 Elf_Internal_Shdr *symtab_hdr; 4011 asection *input_section = link_order->u.indirect.section; 4012 bfd *input_bfd = input_section->owner; 4013 asection **sections = NULL; 4014 Elf_Internal_Rela *internal_relocs = NULL; 4015 Elf_Internal_Sym *isymbuf = NULL; 4016 bfd_size_type amt; 4017 4018 /* We only need to handle the case of relaxing, or of having a 4019 particular set of section contents, specially. */ 4020 if (relocatable 4021 || elf_section_data (input_section)->this_hdr.contents == NULL) 4022 return bfd_generic_get_relocated_section_contents (output_bfd, link_info, 4023 link_order, data, 4024 relocatable, 4025 symbols); 4026 4027 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; 4028 4029 memcpy (data, elf_section_data (input_section)->this_hdr.contents, 4030 input_section->_raw_size); 4031 4032 if ((input_section->flags & SEC_RELOC) != 0 4033 && input_section->reloc_count > 0) 4034 { 4035 Elf_Internal_Sym *isymp; 4036 asection **secpp; 4037 Elf32_External_Sym *esym, *esymend; 4038 4039 internal_relocs = (_bfd_elf_link_read_relocs 4040 (input_bfd, input_section, (PTR) NULL, 4041 (Elf_Internal_Rela *) NULL, FALSE)); 4042 if (internal_relocs == NULL) 4043 goto error_return; 4044 4045 if (symtab_hdr->sh_info != 0) 4046 { 4047 isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents; 4048 if (isymbuf == NULL) 4049 isymbuf = bfd_elf_get_elf_syms (input_bfd, symtab_hdr, 4050 symtab_hdr->sh_info, 0, 4051 NULL, NULL, NULL); 4052 if (isymbuf == NULL) 4053 goto error_return; 4054 } 4055 4056 amt = symtab_hdr->sh_info; 4057 amt *= sizeof (asection *); 4058 sections = (asection **) bfd_malloc (amt); 4059 if (sections == NULL && symtab_hdr->sh_info > 0) 4060 goto error_return; 4061 4062 isymend = isymbuf + symtab_hdr->sh_info; 4063 for (isym = isymbuf, secpp = sections; isym < isymend; ++isym, ++secpp) 4064 { 4065 asection *isec; 4066 4067 if (isym->st_shndx == SHN_UNDEF) 4068 isec = bfd_und_section_ptr; 4069 else if (isym->st_shndx == SHN_ABS) 4070 isec = bfd_abs_section_ptr; 4071 else if (isym->st_shndx == SHN_COMMON) 4072 isec = bfd_com_section_ptr; 4073 else if (isym->st_shndx == SHN_M32R_SCOMMON) 4074 isec = &m32r_elf_scom_section; 4075 else 4076 isec = bfd_section_from_elf_index (input_bfd, isym->st_shndx); 4077 4078 *secpp = isec; 4079 } 4080 4081 if (! m32r_elf_relocate_section (output_bfd, link_info, input_bfd, 4082 input_section, data, internal_relocs, 4083 isymbuf, sections)) 4084 goto error_return; 4085 4086 if (sections != NULL) 4087 free (sections); 4088 if (isymbuf != NULL 4089 && symtab_hdr->contents != (unsigned char *) isymbuf) 4090 free (isymbuf); 4091 if (elf_section_data (input_section)->relocs != internal_relocs) 4092 free (internal_relocs); 4093 } 4094 4095 return data; 4096 4097 error_return: 4098 if (sections != NULL) 4099 free (sections); 4100 if (isymbuf != NULL 4101 && symtab_hdr->contents != (unsigned char *) isymbuf) 4102 free (isymbuf); 4103 if (internal_relocs != NULL 4104 && elf_section_data (input_section)->relocs != internal_relocs) 4105 free (internal_relocs); 4106 return NULL; 4107 } 4108 4109 #endif /* #if 0 */ 4110 4111 /* Set the right machine number. */ 4112 static bfd_boolean 4113 m32r_elf_object_p (abfd) 4114 bfd *abfd; 4115 { 4116 switch (elf_elfheader (abfd)->e_flags & EF_M32R_ARCH) 4117 { 4118 default: 4119 case E_M32R_ARCH: (void) bfd_default_set_arch_mach (abfd, bfd_arch_m32r, bfd_mach_m32r); break; 4120 case E_M32RX_ARCH: (void) bfd_default_set_arch_mach (abfd, bfd_arch_m32r, bfd_mach_m32rx); break; 4121 case E_M32R2_ARCH: (void) bfd_default_set_arch_mach (abfd, bfd_arch_m32r, bfd_mach_m32r2); break; 4122 } 4123 return TRUE; 4124 } 4125 4126 /* Store the machine number in the flags field. */ 4127 static void 4128 m32r_elf_final_write_processing (abfd, linker) 4129 bfd *abfd; 4130 bfd_boolean linker ATTRIBUTE_UNUSED; 4131 { 4132 unsigned long val; 4133 4134 switch (bfd_get_mach (abfd)) 4135 { 4136 default: 4137 case bfd_mach_m32r: val = E_M32R_ARCH; break; 4138 case bfd_mach_m32rx: val = E_M32RX_ARCH; break; 4139 case bfd_mach_m32r2: val = E_M32R2_ARCH; break; 4140 } 4141 4142 elf_elfheader (abfd)->e_flags &=~ EF_M32R_ARCH; 4143 elf_elfheader (abfd)->e_flags |= val; 4144 } 4145 4146 /* Function to keep M32R specific file flags. */ 4147 static bfd_boolean 4148 m32r_elf_set_private_flags (abfd, flags) 4149 bfd *abfd; 4150 flagword flags; 4151 { 4152 BFD_ASSERT (!elf_flags_init (abfd) 4153 || elf_elfheader (abfd)->e_flags == flags); 4154 4155 elf_elfheader (abfd)->e_flags = flags; 4156 elf_flags_init (abfd) = TRUE; 4157 return TRUE; 4158 } 4159 4160 /* Merge backend specific data from an object file to the output 4161 object file when linking. */ 4162 static bfd_boolean 4163 m32r_elf_merge_private_bfd_data (ibfd, obfd) 4164 bfd *ibfd; 4165 bfd *obfd; 4166 { 4167 flagword out_flags; 4168 flagword in_flags; 4169 4170 if ( bfd_get_flavour (ibfd) != bfd_target_elf_flavour 4171 || bfd_get_flavour (obfd) != bfd_target_elf_flavour) 4172 return TRUE; 4173 4174 in_flags = elf_elfheader (ibfd)->e_flags; 4175 out_flags = elf_elfheader (obfd)->e_flags; 4176 4177 if (! elf_flags_init (obfd)) 4178 { 4179 /* If the input is the default architecture then do not 4180 bother setting the flags for the output architecture, 4181 instead allow future merges to do this. If no future 4182 merges ever set these flags then they will retain their 4183 unitialised values, which surprise surprise, correspond 4184 to the default values. */ 4185 if (bfd_get_arch_info (ibfd)->the_default) 4186 return TRUE; 4187 4188 elf_flags_init (obfd) = TRUE; 4189 elf_elfheader (obfd)->e_flags = in_flags; 4190 4191 if (bfd_get_arch (obfd) == bfd_get_arch (ibfd) 4192 && bfd_get_arch_info (obfd)->the_default) 4193 { 4194 return bfd_set_arch_mach (obfd, bfd_get_arch (ibfd), bfd_get_mach (ibfd)); 4195 } 4196 4197 return TRUE; 4198 } 4199 4200 /* Check flag compatibility. */ 4201 if (in_flags == out_flags) 4202 return TRUE; 4203 4204 if ((in_flags & EF_M32R_ARCH) != (out_flags & EF_M32R_ARCH)) 4205 { 4206 if ( ((in_flags & EF_M32R_ARCH) != E_M32R_ARCH) 4207 || ((out_flags & EF_M32R_ARCH) == E_M32R_ARCH) 4208 || ((in_flags & EF_M32R_ARCH) == E_M32R2_ARCH)) 4209 { 4210 (*_bfd_error_handler) 4211 (_("%s: Instruction set mismatch with previous modules"), 4212 bfd_archive_filename (ibfd)); 4213 4214 bfd_set_error (bfd_error_bad_value); 4215 return FALSE; 4216 } 4217 } 4218 4219 return TRUE; 4220 } 4221 4222 /* Display the flags field */ 4223 static bfd_boolean 4224 m32r_elf_print_private_bfd_data (abfd, ptr) 4225 bfd *abfd; 4226 PTR ptr; 4227 { 4228 FILE * file = (FILE *) ptr; 4229 4230 BFD_ASSERT (abfd != NULL && ptr != NULL) 4231 4232 _bfd_elf_print_private_bfd_data (abfd, ptr); 4233 4234 fprintf (file, _("private flags = %lx"), elf_elfheader (abfd)->e_flags); 4235 4236 switch (elf_elfheader (abfd)->e_flags & EF_M32R_ARCH) 4237 { 4238 default: 4239 case E_M32R_ARCH: fprintf (file, _(": m32r instructions")); break; 4240 case E_M32RX_ARCH: fprintf (file, _(": m32rx instructions")); break; 4241 case E_M32R2_ARCH: fprintf (file, _(": m32r2 instructions")); break; 4242 } 4243 4244 fputc ('\n', file); 4245 4246 return TRUE; 4247 } 4248 4249 asection * 4250 m32r_elf_gc_mark_hook (sec, info, rel, h, sym) 4251 asection *sec; 4252 struct bfd_link_info *info ATTRIBUTE_UNUSED; 4253 Elf_Internal_Rela *rel; 4254 struct elf_link_hash_entry *h; 4255 Elf_Internal_Sym *sym; 4256 { 4257 if (h != NULL) 4258 { 4259 switch (ELF32_R_TYPE (rel->r_info)) 4260 { 4261 case R_M32R_GNU_VTINHERIT: 4262 case R_M32R_GNU_VTENTRY: 4263 case R_M32R_RELA_GNU_VTINHERIT: 4264 case R_M32R_RELA_GNU_VTENTRY: 4265 break; 4266 4267 default: 4268 switch (h->root.type) 4269 { 4270 case bfd_link_hash_defined: 4271 case bfd_link_hash_defweak: 4272 return h->root.u.def.section; 4273 4274 case bfd_link_hash_common: 4275 return h->root.u.c.p->section; 4276 4277 default: 4278 break; 4279 } 4280 } 4281 } 4282 else 4283 return bfd_section_from_elf_index (sec->owner, sym->st_shndx); 4284 4285 return NULL; 4286 } 4287 4288 static bfd_boolean 4289 m32r_elf_gc_sweep_hook (abfd, info, sec, relocs) 4290 bfd *abfd ATTRIBUTE_UNUSED; 4291 struct bfd_link_info *info ATTRIBUTE_UNUSED; 4292 asection *sec ATTRIBUTE_UNUSED; 4293 const Elf_Internal_Rela *relocs ATTRIBUTE_UNUSED; 4294 { 4295 /* Update the got entry reference counts for the section being removed. */ 4296 Elf_Internal_Shdr *symtab_hdr; 4297 struct elf_link_hash_entry **sym_hashes; 4298 bfd_signed_vma *local_got_refcounts; 4299 const Elf_Internal_Rela *rel, *relend; 4300 unsigned long r_symndx; 4301 struct elf_link_hash_entry *h; 4302 4303 elf_section_data (sec)->local_dynrel = NULL; 4304 4305 symtab_hdr = &elf_tdata (abfd)->symtab_hdr; 4306 sym_hashes = elf_sym_hashes (abfd); 4307 local_got_refcounts = elf_local_got_refcounts (abfd); 4308 4309 relend = relocs + sec->reloc_count; 4310 for (rel = relocs; rel < relend; rel++) 4311 switch (ELF32_R_TYPE (rel->r_info)) 4312 { 4313 case R_M32R_GOT16_HI_ULO: 4314 case R_M32R_GOT16_HI_SLO: 4315 case R_M32R_GOT16_LO: 4316 case R_M32R_GOT24: 4317 case R_M32R_GOTPC_HI_ULO: 4318 case R_M32R_GOTPC_HI_SLO: 4319 case R_M32R_GOTPC_LO: 4320 case R_M32R_GOTPC24: 4321 r_symndx = ELF32_R_SYM (rel->r_info); 4322 if (r_symndx >= symtab_hdr->sh_info) 4323 { 4324 h = sym_hashes[r_symndx - symtab_hdr->sh_info]; 4325 if (h->got.refcount > 0) 4326 h->got.refcount--; 4327 } 4328 else 4329 { 4330 if (local_got_refcounts && local_got_refcounts[r_symndx] > 0) 4331 local_got_refcounts[r_symndx]--; 4332 } 4333 break; 4334 4335 case R_M32R_16_RELA: 4336 case R_M32R_24_RELA: 4337 case R_M32R_32_RELA: 4338 case R_M32R_HI16_ULO_RELA: 4339 case R_M32R_HI16_SLO_RELA: 4340 case R_M32R_LO16_RELA: 4341 case R_M32R_SDA16_RELA: 4342 case R_M32R_18_PCREL_RELA: 4343 case R_M32R_26_PCREL_RELA: 4344 r_symndx = ELF32_R_SYM (rel->r_info); 4345 if (r_symndx >= symtab_hdr->sh_info) 4346 { 4347 struct elf_m32r_link_hash_entry *eh; 4348 struct elf_m32r_dyn_relocs **pp; 4349 struct elf_m32r_dyn_relocs *p; 4350 4351 h = sym_hashes[r_symndx - symtab_hdr->sh_info]; 4352 4353 if (!info->shared && h->plt.refcount > 0) 4354 h->plt.refcount -= 1; 4355 4356 eh = (struct elf_m32r_link_hash_entry *) h; 4357 4358 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next) 4359 if (p->sec == sec) 4360 { 4361 if (ELF32_R_TYPE (rel->r_info) == R_M32R_26_PCREL_RELA 4362 || ELF32_R_TYPE (rel->r_info) == R_M32R_26_PCREL_RELA) 4363 p->pc_count -= 1; 4364 p->count -= 1; 4365 if (p->count == 0) 4366 *pp = p->next; 4367 break; 4368 } 4369 } 4370 break; 4371 4372 case R_M32R_26_PLTREL: 4373 r_symndx = ELF32_R_SYM (rel->r_info); 4374 if (r_symndx >= symtab_hdr->sh_info) 4375 { 4376 h = sym_hashes[r_symndx - symtab_hdr->sh_info]; 4377 if (h->plt.refcount > 0) 4378 h->plt.refcount--; 4379 } 4380 break; 4381 4382 default: 4383 break; 4384 } 4385 4386 return TRUE; 4387 } 4388 4389 /* Look through the relocs for a section during the first phase. 4390 Since we don't do .gots or .plts, we just need to consider the 4391 virtual table relocs for gc. */ 4392 4393 static bfd_boolean 4394 m32r_elf_check_relocs (abfd, info, sec, relocs) 4395 bfd *abfd; 4396 struct bfd_link_info *info; 4397 asection *sec; 4398 const Elf_Internal_Rela *relocs; 4399 { 4400 Elf_Internal_Shdr *symtab_hdr; 4401 struct elf_link_hash_entry **sym_hashes, **sym_hashes_end; 4402 const Elf_Internal_Rela *rel; 4403 const Elf_Internal_Rela *rel_end; 4404 struct elf_m32r_link_hash_table *htab; 4405 bfd *dynobj; 4406 bfd_vma *local_got_offsets; 4407 asection *sgot, *srelgot, *sreloc; 4408 4409 if (info->relocatable) 4410 return TRUE; 4411 4412 sgot = srelgot = sreloc = NULL; 4413 4414 symtab_hdr = &elf_tdata (abfd)->symtab_hdr; 4415 sym_hashes = elf_sym_hashes (abfd); 4416 sym_hashes_end = sym_hashes + symtab_hdr->sh_size/sizeof (Elf32_External_Sym); 4417 if (!elf_bad_symtab (abfd)) 4418 sym_hashes_end -= symtab_hdr->sh_info; 4419 4420 htab = m32r_elf_hash_table (info); 4421 dynobj = htab->root.dynobj; 4422 local_got_offsets = elf_local_got_offsets (abfd); 4423 4424 rel_end = relocs + sec->reloc_count; 4425 for (rel = relocs; rel < rel_end; rel++) 4426 { 4427 int r_type; 4428 struct elf_link_hash_entry *h; 4429 unsigned long r_symndx; 4430 4431 r_symndx = ELF32_R_SYM (rel->r_info); 4432 r_type = ELF32_R_TYPE (rel->r_info); 4433 if (r_symndx < symtab_hdr->sh_info) 4434 h = NULL; 4435 else 4436 h = sym_hashes[r_symndx - symtab_hdr->sh_info]; 4437 4438 /* Some relocs require a global offset table. */ 4439 if (htab->sgot == NULL) 4440 { 4441 switch (r_type) 4442 { 4443 case R_M32R_GOT16_HI_ULO: 4444 case R_M32R_GOT16_HI_SLO: 4445 case R_M32R_GOT16_LO: 4446 case R_M32R_GOTPC24: 4447 case R_M32R_GOTPC_HI_ULO: 4448 case R_M32R_GOTPC_HI_SLO: 4449 case R_M32R_GOTPC_LO: 4450 case R_M32R_GOT24: 4451 if (dynobj == NULL) 4452 htab->root.dynobj = dynobj = abfd; 4453 if (! create_got_section (dynobj, info)) 4454 return FALSE; 4455 break; 4456 4457 default: 4458 break; 4459 } 4460 } 4461 4462 switch (r_type) 4463 { 4464 case R_M32R_GOT16_HI_ULO: 4465 case R_M32R_GOT16_HI_SLO: 4466 case R_M32R_GOT16_LO: 4467 case R_M32R_GOT24: 4468 4469 if (h != NULL) 4470 h->got.refcount += 1; 4471 else 4472 { 4473 bfd_signed_vma *local_got_refcounts; 4474 4475 /* This is a global offset table entry for a local 4476 symbol. */ 4477 local_got_refcounts = elf_local_got_refcounts (abfd); 4478 if (local_got_refcounts == NULL) 4479 { 4480 bfd_size_type size; 4481 4482 size = symtab_hdr->sh_info; 4483 size *= sizeof (bfd_signed_vma); 4484 local_got_refcounts = ((bfd_signed_vma *) 4485 bfd_zalloc (abfd, size)); 4486 if (local_got_refcounts == NULL) 4487 return FALSE; 4488 elf_local_got_refcounts (abfd) = local_got_refcounts; 4489 } 4490 local_got_refcounts[r_symndx] += 1; 4491 } 4492 break; 4493 4494 case R_M32R_26_PLTREL: 4495 /* This symbol requires a procedure linkage table entry. We 4496 actually build the entry in adjust_dynamic_symbol, 4497 because this might be a case of linking PIC code without 4498 linking in any dynamic objects, in which case we don't 4499 need to generate a procedure linkage table after all. */ 4500 4501 /* If this is a local symbol, we resolve it directly without 4502 creating a procedure linkage table entry. */ 4503 if (h == NULL) 4504 continue; 4505 4506 if (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) 4507 break; 4508 4509 h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_PLT; 4510 h->plt.refcount += 1; 4511 break; 4512 4513 case R_M32R_16_RELA: 4514 case R_M32R_24_RELA: 4515 case R_M32R_32_RELA: 4516 case R_M32R_HI16_ULO_RELA: 4517 case R_M32R_HI16_SLO_RELA: 4518 case R_M32R_LO16_RELA: 4519 case R_M32R_SDA16_RELA: 4520 case R_M32R_18_PCREL_RELA: 4521 case R_M32R_26_PCREL_RELA: 4522 4523 if (h != NULL && !info->shared) 4524 { 4525 h->elf_link_hash_flags |= ELF_LINK_NON_GOT_REF; 4526 h->plt.refcount += 1; 4527 } 4528 4529 /* If we are creating a shared library, and this is a reloc 4530 against a global symbol, or a non PC relative reloc 4531 against a local symbol, then we need to copy the reloc 4532 into the shared library. However, if we are linking with 4533 -Bsymbolic, we do not need to copy a reloc against a 4534 global symbol which is defined in an object we are 4535 including in the link (i.e., DEF_REGULAR is set). At 4536 this point we have not seen all the input files, so it is 4537 possible that DEF_REGULAR is not set now but will be set 4538 later (it is never cleared). We account for that 4539 possibility below by storing information in the 4540 dyn_relocs field of the hash table entry. A similar 4541 situation occurs when creating shared libraries and symbol 4542 visibility changes render the symbol local. 4543 4544 If on the other hand, we are creating an executable, we 4545 may need to keep relocations for symbols satisfied by a 4546 dynamic library if we manage to avoid copy relocs for the 4547 symbol. */ 4548 if ((info->shared 4549 && (sec->flags & SEC_ALLOC) != 0 4550 && ((r_type != R_M32R_26_PCREL_RELA 4551 && r_type != R_M32R_18_PCREL_RELA) 4552 || (h != NULL 4553 && (! info->symbolic 4554 || h->root.type == bfd_link_hash_defweak 4555 || (h->elf_link_hash_flags 4556 & ELF_LINK_HASH_DEF_REGULAR) == 0)))) 4557 || (!info->shared 4558 && (sec->flags & SEC_ALLOC) != 0 4559 && h != NULL 4560 && (h->root.type == bfd_link_hash_defweak 4561 || (h->elf_link_hash_flags 4562 & ELF_LINK_HASH_DEF_REGULAR) == 0))) 4563 { 4564 struct elf_m32r_dyn_relocs *p; 4565 struct elf_m32r_dyn_relocs **head; 4566 4567 if (dynobj == NULL) 4568 htab->root.dynobj = dynobj = abfd; 4569 4570 /* When creating a shared object, we must copy these 4571 relocs into the output file. We create a reloc 4572 section in dynobj and make room for the reloc. */ 4573 if (sreloc == NULL) 4574 { 4575 const char *name; 4576 4577 name = (bfd_elf_string_from_elf_section 4578 (abfd, 4579 elf_elfheader (abfd)->e_shstrndx, 4580 elf_section_data (sec)->rel_hdr.sh_name)); 4581 if (name == NULL) 4582 return FALSE; 4583 4584 BFD_ASSERT (strncmp (name, ".rela", 5) == 0 4585 && strcmp (bfd_get_section_name (abfd, sec), 4586 name + 5) == 0); 4587 4588 sreloc = bfd_get_section_by_name (dynobj, name); 4589 if (sreloc == NULL) 4590 { 4591 flagword flags; 4592 4593 sreloc = bfd_make_section (dynobj, name); 4594 flags = (SEC_HAS_CONTENTS | SEC_READONLY 4595 | SEC_IN_MEMORY | SEC_LINKER_CREATED); 4596 if ((sec->flags & SEC_ALLOC) != 0) 4597 flags |= SEC_ALLOC | SEC_LOAD; 4598 if (sreloc == NULL 4599 || ! bfd_set_section_flags (dynobj, sreloc, flags) 4600 || ! bfd_set_section_alignment (dynobj, sreloc, 2)) 4601 return FALSE; 4602 } 4603 elf_section_data (sec)->sreloc = sreloc; 4604 } 4605 4606 /* If this is a global symbol, we count the number of 4607 relocations we need for this symbol. */ 4608 if (h != NULL) 4609 head = &((struct elf_m32r_link_hash_entry *) h)->dyn_relocs; 4610 else 4611 { 4612 asection *s; 4613 4614 /* Track dynamic relocs needed for local syms too. */ 4615 s = bfd_section_from_r_symndx (abfd, &htab->sym_sec, 4616 sec, r_symndx); 4617 if (s == NULL) 4618 return FALSE; 4619 4620 head = ((struct elf_m32r_dyn_relocs **) 4621 &elf_section_data (s)->local_dynrel); 4622 } 4623 4624 p = *head; 4625 if (p == NULL || p->sec != sec) 4626 { 4627 bfd_size_type amt = sizeof (*p); 4628 p = ((struct elf_m32r_dyn_relocs *) bfd_alloc (dynobj, amt)); 4629 if (p == NULL) 4630 return FALSE; 4631 p->next = *head; 4632 *head = p; 4633 p->sec = sec; 4634 p->count = 0; 4635 p->pc_count = 0; 4636 } 4637 4638 p->count += 1; 4639 if (ELF32_R_TYPE (rel->r_info) == R_M32R_26_PCREL_RELA 4640 || ELF32_R_TYPE (rel->r_info) == R_M32R_18_PCREL_RELA) 4641 p->pc_count += 1; 4642 } 4643 break; 4644 4645 /* This relocation describes the C++ object vtable hierarchy. 4646 Reconstruct it for later use during GC. */ 4647 case R_M32R_RELA_GNU_VTINHERIT: 4648 case R_M32R_GNU_VTINHERIT: 4649 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset)) 4650 return FALSE; 4651 break; 4652 4653 /* This relocation describes which C++ vtable entries are actually 4654 used. Record for later use during GC. */ 4655 case R_M32R_GNU_VTENTRY: 4656 if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_offset)) 4657 return FALSE; 4658 break; 4659 case R_M32R_RELA_GNU_VTENTRY: 4660 if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend)) 4661 return FALSE; 4662 break; 4663 } 4664 } 4665 4666 return TRUE; 4667 } 4668 4669 static struct bfd_elf_special_section const m32r_elf_special_sections[]= 4670 { 4671 { ".sdata", 6, -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, 4672 { ".sbss", 5, -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE }, 4673 { NULL, 0, 0, 0, 0 } 4674 }; 4675 4676 static bfd_boolean 4677 m32r_elf_fake_sections (abfd, hdr, sec) 4678 bfd *abfd; 4679 Elf_Internal_Shdr *hdr ATTRIBUTE_UNUSED; 4680 asection *sec; 4681 { 4682 register const char *name; 4683 4684 name = bfd_get_section_name (abfd, sec); 4685 4686 /* The generic elf_fake_sections will set up REL_HDR using the 4687 default kind of relocations. But, we may actually need both 4688 kinds of relocations, so we set up the second header here. 4689 4690 This is not necessary for the O32 ABI since that only uses Elf32_Rel 4691 relocations (cf. System V ABI, MIPS RISC Processor Supplement, 4692 3rd Edition, p. 4-17). It breaks the IRIX 5/6 32-bit ld, since one 4693 of the resulting empty .rela.<section> sections starts with 4694 sh_offset == object size, and ld doesn't allow that. While the check 4695 is arguably bogus for empty or SHT_NOBITS sections, it can easily be 4696 avoided by not emitting those useless sections in the first place. */ 4697 if ((sec->flags & SEC_RELOC) != 0) 4698 { 4699 struct bfd_elf_section_data *esd; 4700 bfd_size_type amt = sizeof (Elf_Internal_Shdr); 4701 4702 esd = elf_section_data (sec); 4703 BFD_ASSERT (esd->rel_hdr2 == NULL); 4704 esd->rel_hdr2 = (Elf_Internal_Shdr *) bfd_zalloc (abfd, amt); 4705 if (!esd->rel_hdr2) 4706 return FALSE; 4707 _bfd_elf_init_reloc_shdr (abfd, esd->rel_hdr2, sec, 4708 !sec->use_rela_p); 4709 } 4710 4711 return TRUE; 4712 } 4713 4714 static enum elf_reloc_type_class 4715 m32r_elf_reloc_type_class (rela) 4716 const Elf_Internal_Rela *rela; 4717 { 4718 switch ((int) ELF32_R_TYPE (rela->r_info)) 4719 { 4720 case R_M32R_RELATIVE: 4721 return reloc_class_relative; 4722 case R_M32R_JMP_SLOT: 4723 return reloc_class_plt; 4724 case R_M32R_COPY: 4725 return reloc_class_copy; 4726 default: 4727 return reloc_class_normal; 4728 } 4729 } 4730 4731 #define ELF_ARCH bfd_arch_m32r 4732 #define ELF_MACHINE_CODE EM_M32R 4733 #define ELF_MACHINE_ALT1 EM_CYGNUS_M32R 4734 #define ELF_MAXPAGESIZE 0x1 /* Explicitly requested by Mitsubishi. */ 4735 4736 #define TARGET_BIG_SYM bfd_elf32_m32r_vec 4737 #define TARGET_BIG_NAME "elf32-m32r" 4738 #define TARGET_LITTLE_SYM bfd_elf32_m32rle_vec 4739 #define TARGET_LITTLE_NAME "elf32-m32rle" 4740 4741 #define elf_info_to_howto m32r_info_to_howto 4742 #define elf_info_to_howto_rel m32r_info_to_howto_rel 4743 #define elf_backend_section_from_bfd_section _bfd_m32r_elf_section_from_bfd_section 4744 #define elf_backend_symbol_processing _bfd_m32r_elf_symbol_processing 4745 #define elf_backend_add_symbol_hook m32r_elf_add_symbol_hook 4746 #define elf_backend_relocate_section m32r_elf_relocate_section 4747 #define elf_backend_gc_mark_hook m32r_elf_gc_mark_hook 4748 #define elf_backend_gc_sweep_hook m32r_elf_gc_sweep_hook 4749 #define elf_backend_check_relocs m32r_elf_check_relocs 4750 4751 #define elf_backend_create_dynamic_sections m32r_elf_create_dynamic_sections 4752 #define bfd_elf32_bfd_link_hash_table_create m32r_elf_link_hash_table_create 4753 #define elf_backend_size_dynamic_sections m32r_elf_size_dynamic_sections 4754 #define elf_backend_finish_dynamic_sections m32r_elf_finish_dynamic_sections 4755 #define elf_backend_adjust_dynamic_symbol m32r_elf_adjust_dynamic_symbol 4756 #define elf_backend_finish_dynamic_symbol m32r_elf_finish_dynamic_symbol 4757 #define elf_backend_reloc_type_class m32r_elf_reloc_type_class 4758 #define elf_backend_copy_indirect_symbol m32r_elf_copy_indirect_symbol 4759 4760 #define elf_backend_can_gc_sections 1 4761 /*#if !USE_REL 4762 #define elf_backend_rela_normal 1 4763 #endif*/ 4764 #define elf_backend_can_refcount 1 4765 #define elf_backend_want_got_plt 1 4766 #define elf_backend_plt_readonly 1 4767 #define elf_backend_want_plt_sym 0 4768 #define elf_backend_got_header_size 12 4769 4770 #define elf_backend_may_use_rel_p 1 4771 #ifdef USE_M32R_OLD_RELOC 4772 #define elf_backend_default_use_rela_p 0 4773 #define elf_backend_may_use_rela_p 0 4774 #else 4775 #define elf_backend_default_use_rela_p 1 4776 #define elf_backend_may_use_rela_p 1 4777 #define elf_backend_fake_sections m32r_elf_fake_sections 4778 #endif 4779 4780 #if 0 /* not yet */ 4781 /* relax support */ 4782 #define bfd_elf32_bfd_relax_section m32r_elf_relax_section 4783 #define bfd_elf32_bfd_get_relocated_section_contents \ 4784 m32r_elf_get_relocated_section_contents 4785 #endif 4786 4787 #define elf_backend_object_p m32r_elf_object_p 4788 #define elf_backend_final_write_processing m32r_elf_final_write_processing 4789 #define bfd_elf32_bfd_merge_private_bfd_data m32r_elf_merge_private_bfd_data 4790 #define bfd_elf32_bfd_set_private_flags m32r_elf_set_private_flags 4791 #define bfd_elf32_bfd_print_private_bfd_data m32r_elf_print_private_bfd_data 4792 #define elf_backend_special_sections m32r_elf_special_sections 4793 4794 #include "elf32-target.h" 4795 4796 #undef ELF_MAXPAGESIZE 4797 #define ELF_MAXPAGESIZE 0x1000 4798 4799 #undef TARGET_BIG_SYM 4800 #define TARGET_BIG_SYM bfd_elf32_m32rlin_vec 4801 #undef TARGET_BIG_NAME 4802 #define TARGET_BIG_NAME "elf32-m32r-linux" 4803 #undef TARGET_LITTLE_SYM 4804 #define TARGET_LITTLE_SYM bfd_elf32_m32rlelin_vec 4805 #undef TARGET_LITTLE_NAME 4806 #define TARGET_LITTLE_NAME "elf32-m32rle-linux" 4807 #undef elf32_bed 4808 #define elf32_bed elf32_m32r_lin_bed 4809 4810 #include "elf32-target.h" 4811 4812