1 /* M32R-specific support for 32-bit ELF. 2 Copyright (C) 1996-2017 Free Software Foundation, Inc. 3 4 This file is part of BFD, the Binary File Descriptor library. 5 6 This program is free software; you can redistribute it and/or modify 7 it under the terms of the GNU General Public License as published by 8 the Free Software Foundation; either version 3 of the License, or 9 (at your option) any later version. 10 11 This program is distributed in the hope that it will be useful, 12 but WITHOUT ANY WARRANTY; without even the implied warranty of 13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14 GNU General Public License for more details. 15 16 You should have received a copy of the GNU General Public License 17 along with this program; if not, write to the Free Software 18 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, 19 MA 02110-1301, USA. */ 20 21 #include "sysdep.h" 22 #include "bfd.h" 23 #include "libbfd.h" 24 #include "elf-bfd.h" 25 #include "elf/m32r.h" 26 27 #define NOP_INSN 0x7000 28 #define MAKE_PARALLEL(insn) ((insn) | 0x8000) 29 30 /* Use REL instead of RELA to save space. 31 This only saves space in libraries and object files, but perhaps 32 relocs will be put in ROM? All in all though, REL relocs are a pain 33 to work with. */ 34 /* #define USE_REL 1 35 36 #ifndef USE_REL 37 #define USE_REL 0 38 #endif */ 39 /* Use RELA. But use REL to link old objects for backwords compatibility. */ 40 41 /* Functions for the M32R ELF linker. */ 42 43 /* The name of the dynamic interpreter. This is put in the .interp 44 section. */ 45 46 #define ELF_DYNAMIC_INTERPRETER "/usr/lib/libc.so.1" 47 48 /* The nop opcode we use. */ 49 50 #define M32R_NOP 0x7000f000 51 52 #define PLT_EMPTY 0x10101010 /* RIE -> RIE */ 53 54 /* The size in bytes of an entry in the procedure linkage table. */ 55 56 #define PLT_ENTRY_SIZE 20 57 #define PLT_HEADER_SIZE 20 58 59 /* The first one entries in a procedure linkage table are reserved, 60 and the initial contents are unimportant (we zero them out). 61 Subsequent entries look like this. */ 62 63 #define PLT0_ENTRY_WORD0 0xd6c00000 /* seth r6, #high(.got+4) */ 64 #define PLT0_ENTRY_WORD1 0x86e60000 /* or3 r6, r6, #low(.got)+4) */ 65 #define PLT0_ENTRY_WORD2 0x24e626c6 /* ld r4, @r6+ -> ld r6, @r6 */ 66 #define PLT0_ENTRY_WORD3 0x1fc6f000 /* jmp r6 || pnop */ 67 #define PLT0_ENTRY_WORD4 PLT_EMPTY /* RIE -> RIE */ 68 69 #define PLT0_PIC_ENTRY_WORD0 0xa4cc0004 /* ld r4, @(4,r12) */ 70 #define PLT0_PIC_ENTRY_WORD1 0xa6cc0008 /* ld r6, @(8,r12) */ 71 #define PLT0_PIC_ENTRY_WORD2 0x1fc6f000 /* jmp r6 || nop */ 72 #define PLT0_PIC_ENTRY_WORD3 PLT_EMPTY /* RIE -> RIE */ 73 #define PLT0_PIC_ENTRY_WORD4 PLT_EMPTY /* RIE -> RIE */ 74 75 #define PLT_ENTRY_WORD0 0xe6000000 /* ld24 r6, .name_in_GOT */ 76 #define PLT_ENTRY_WORD1 0x06acf000 /* add r6, r12 || nop */ 77 #define PLT_ENTRY_WORD0b 0xd6c00000 /* seth r6, #high(.name_in_GOT) */ 78 #define PLT_ENTRY_WORD1b 0x86e60000 /* or3 r6, r6, #low(.name_in_GOT) */ 79 #define PLT_ENTRY_WORD2 0x26c61fc6 /* ld r6, @r6 -> jmp r6 */ 80 #define PLT_ENTRY_WORD3 0xe5000000 /* ld24 r5, $offset */ 81 #define PLT_ENTRY_WORD4 0xff000000 /* bra .plt0. */ 82 83 84 /* Utility to actually perform an R_M32R_10_PCREL reloc. */ 85 86 static bfd_reloc_status_type 87 m32r_elf_do_10_pcrel_reloc (bfd *abfd, 88 reloc_howto_type *howto, 89 asection *input_section, 90 bfd_byte *data, 91 bfd_vma offset, 92 asection *symbol_section ATTRIBUTE_UNUSED, 93 bfd_vma symbol_value, 94 bfd_vma addend) 95 { 96 bfd_signed_vma relocation; 97 unsigned long x; 98 bfd_reloc_status_type status; 99 100 /* Sanity check the address (offset in section). */ 101 if (offset > bfd_get_section_limit (abfd, input_section)) 102 return bfd_reloc_outofrange; 103 104 relocation = symbol_value + addend; 105 /* Make it pc relative. */ 106 relocation -= (input_section->output_section->vma 107 + input_section->output_offset); 108 /* These jumps mask off the lower two bits of the current address 109 before doing pcrel calculations. */ 110 relocation -= (offset & -(bfd_vma) 4); 111 112 if (relocation < -0x200 || relocation > 0x1ff) 113 status = bfd_reloc_overflow; 114 else 115 status = bfd_reloc_ok; 116 117 x = bfd_get_16 (abfd, data + offset); 118 relocation >>= howto->rightshift; 119 relocation <<= howto->bitpos; 120 x = (x & ~howto->dst_mask) | (((x & howto->src_mask) + relocation) & howto->dst_mask); 121 bfd_put_16 (abfd, (bfd_vma) x, data + offset); 122 123 return status; 124 } 125 126 /* Handle the R_M32R_10_PCREL reloc. */ 127 128 static bfd_reloc_status_type 129 m32r_elf_10_pcrel_reloc (bfd * abfd, 130 arelent * reloc_entry, 131 asymbol * symbol, 132 void * data, 133 asection * input_section, 134 bfd * output_bfd, 135 char ** error_message ATTRIBUTE_UNUSED) 136 { 137 /* This part is from bfd_elf_generic_reloc. */ 138 if (output_bfd != NULL 139 && (symbol->flags & BSF_SECTION_SYM) == 0 140 && (! reloc_entry->howto->partial_inplace 141 || reloc_entry->addend == 0)) 142 { 143 reloc_entry->address += input_section->output_offset; 144 return bfd_reloc_ok; 145 } 146 147 if (output_bfd != NULL) 148 /* FIXME: See bfd_perform_relocation. Is this right? */ 149 return bfd_reloc_continue; 150 151 return m32r_elf_do_10_pcrel_reloc (abfd, reloc_entry->howto, 152 input_section, 153 data, reloc_entry->address, 154 symbol->section, 155 (symbol->value 156 + symbol->section->output_section->vma 157 + symbol->section->output_offset), 158 reloc_entry->addend); 159 } 160 161 /* Do generic partial_inplace relocation. 162 This is a local replacement for bfd_elf_generic_reloc. */ 163 164 static bfd_reloc_status_type 165 m32r_elf_generic_reloc (bfd *input_bfd, 166 arelent *reloc_entry, 167 asymbol *symbol, 168 void * data, 169 asection *input_section, 170 bfd *output_bfd, 171 char **error_message ATTRIBUTE_UNUSED) 172 { 173 bfd_reloc_status_type ret; 174 bfd_vma relocation; 175 bfd_byte *inplace_address; 176 177 /* This part is from bfd_elf_generic_reloc. 178 If we're relocating, and this an external symbol, we don't want 179 to change anything. */ 180 if (output_bfd != NULL 181 && (symbol->flags & BSF_SECTION_SYM) == 0 182 && reloc_entry->addend == 0) 183 { 184 reloc_entry->address += input_section->output_offset; 185 return bfd_reloc_ok; 186 } 187 188 /* Now do the reloc in the usual way. 189 ??? It would be nice to call bfd_elf_generic_reloc here, 190 but we have partial_inplace set. bfd_elf_generic_reloc will 191 pass the handling back to bfd_install_relocation which will install 192 a section relative addend which is wrong. */ 193 194 /* Sanity check the address (offset in section). */ 195 if (reloc_entry->address > bfd_get_section_limit (input_bfd, input_section)) 196 return bfd_reloc_outofrange; 197 198 ret = bfd_reloc_ok; 199 if (bfd_is_und_section (symbol->section) 200 && output_bfd == NULL) 201 ret = bfd_reloc_undefined; 202 203 if (bfd_is_com_section (symbol->section) 204 || output_bfd != NULL) 205 relocation = 0; 206 else 207 relocation = symbol->value; 208 209 /* Only do this for a final link. */ 210 if (output_bfd == NULL) 211 { 212 relocation += symbol->section->output_section->vma; 213 relocation += symbol->section->output_offset; 214 } 215 216 relocation += reloc_entry->addend; 217 inplace_address = (bfd_byte *) data + reloc_entry->address; 218 219 #define DOIT(x) \ 220 x = ( (x & ~reloc_entry->howto->dst_mask) | \ 221 (((x & reloc_entry->howto->src_mask) + relocation) & \ 222 reloc_entry->howto->dst_mask)) 223 224 switch (reloc_entry->howto->size) 225 { 226 case 1: 227 { 228 short x = bfd_get_16 (input_bfd, inplace_address); 229 DOIT (x); 230 bfd_put_16 (input_bfd, (bfd_vma) x, inplace_address); 231 } 232 break; 233 case 2: 234 { 235 unsigned long x = bfd_get_32 (input_bfd, inplace_address); 236 DOIT (x); 237 bfd_put_32 (input_bfd, (bfd_vma)x , inplace_address); 238 } 239 break; 240 default: 241 BFD_ASSERT (0); 242 } 243 244 if (output_bfd != NULL) 245 reloc_entry->address += input_section->output_offset; 246 247 return ret; 248 } 249 250 /* Handle the R_M32R_SDA16 reloc. 251 This reloc is used to compute the address of objects in the small data area 252 and to perform loads and stores from that area. 253 The lower 16 bits are sign extended and added to the register specified 254 in the instruction, which is assumed to point to _SDA_BASE_. */ 255 256 static bfd_reloc_status_type 257 m32r_elf_sda16_reloc (bfd *abfd ATTRIBUTE_UNUSED, 258 arelent *reloc_entry, 259 asymbol *symbol, 260 void * data ATTRIBUTE_UNUSED, 261 asection *input_section, 262 bfd *output_bfd, 263 char **error_message ATTRIBUTE_UNUSED) 264 { 265 /* This part is from bfd_elf_generic_reloc. */ 266 if (output_bfd != NULL 267 && (symbol->flags & BSF_SECTION_SYM) == 0 268 && (! reloc_entry->howto->partial_inplace 269 || reloc_entry->addend == 0)) 270 { 271 reloc_entry->address += input_section->output_offset; 272 return bfd_reloc_ok; 273 } 274 275 if (output_bfd != NULL) 276 /* FIXME: See bfd_perform_relocation. Is this right? */ 277 return bfd_reloc_continue; 278 279 /* FIXME: not sure what to do here yet. But then again, the linker 280 may never call us. */ 281 abort (); 282 } 283 284 285 /* Handle the R_M32R_HI16_[SU]LO relocs. 286 HI16_SLO is for the add3 and load/store with displacement instructions. 287 HI16_ULO is for the or3 instruction. 288 For R_M32R_HI16_SLO, the lower 16 bits are sign extended when added to 289 the high 16 bytes so if the lower 16 bits are negative (bit 15 == 1) then 290 we must add one to the high 16 bytes (which will get subtracted off when 291 the low 16 bits are added). 292 These relocs have to be done in combination with an R_M32R_LO16 reloc 293 because there is a carry from the LO16 to the HI16. Here we just save 294 the information we need; we do the actual relocation when we see the LO16. 295 This code is copied from the elf32-mips.c. We also support an arbitrary 296 number of HI16 relocs to be associated with a single LO16 reloc. The 297 assembler sorts the relocs to ensure each HI16 immediately precedes its 298 LO16. However if there are multiple copies, the assembler may not find 299 the real LO16 so it picks the first one it finds. */ 300 301 struct m32r_hi16 302 { 303 struct m32r_hi16 *next; 304 bfd_byte *addr; 305 bfd_vma addend; 306 }; 307 308 /* FIXME: This should not be a static variable. */ 309 310 static struct m32r_hi16 *m32r_hi16_list; 311 312 static bfd_reloc_status_type 313 m32r_elf_hi16_reloc (bfd *abfd ATTRIBUTE_UNUSED, 314 arelent *reloc_entry, 315 asymbol *symbol, 316 void * data, 317 asection *input_section, 318 bfd *output_bfd, 319 char **error_message ATTRIBUTE_UNUSED) 320 { 321 bfd_reloc_status_type ret; 322 bfd_vma relocation; 323 struct m32r_hi16 *n; 324 325 /* This part is from bfd_elf_generic_reloc. 326 If we're relocating, and this an external symbol, we don't want 327 to change anything. */ 328 if (output_bfd != NULL 329 && (symbol->flags & BSF_SECTION_SYM) == 0 330 && reloc_entry->addend == 0) 331 { 332 reloc_entry->address += input_section->output_offset; 333 return bfd_reloc_ok; 334 } 335 336 /* Sanity check the address (offset in section). */ 337 if (reloc_entry->address > bfd_get_section_limit (abfd, input_section)) 338 return bfd_reloc_outofrange; 339 340 ret = bfd_reloc_ok; 341 if (bfd_is_und_section (symbol->section) 342 && output_bfd == NULL) 343 ret = bfd_reloc_undefined; 344 345 if (bfd_is_com_section (symbol->section)) 346 relocation = 0; 347 else 348 relocation = symbol->value; 349 350 relocation += symbol->section->output_section->vma; 351 relocation += symbol->section->output_offset; 352 relocation += reloc_entry->addend; 353 354 /* Save the information, and let LO16 do the actual relocation. */ 355 n = bfd_malloc ((bfd_size_type) sizeof *n); 356 if (n == NULL) 357 return bfd_reloc_outofrange; 358 n->addr = (bfd_byte *) data + reloc_entry->address; 359 n->addend = relocation; 360 n->next = m32r_hi16_list; 361 m32r_hi16_list = n; 362 363 if (output_bfd != NULL) 364 reloc_entry->address += input_section->output_offset; 365 366 return ret; 367 } 368 369 /* Handle an M32R ELF HI16 reloc. */ 370 371 static void 372 m32r_elf_relocate_hi16 (bfd *input_bfd, 373 int type, 374 Elf_Internal_Rela *relhi, 375 Elf_Internal_Rela *rello, 376 bfd_byte *contents, 377 bfd_vma addend) 378 { 379 unsigned long insn; 380 bfd_vma addlo; 381 382 insn = bfd_get_32 (input_bfd, contents + relhi->r_offset); 383 384 addlo = bfd_get_32 (input_bfd, contents + rello->r_offset); 385 if (type == R_M32R_HI16_SLO) 386 addlo = ((addlo & 0xffff) ^ 0x8000) - 0x8000; 387 else 388 addlo &= 0xffff; 389 390 addend += ((insn & 0xffff) << 16) + addlo; 391 392 /* Reaccount for sign extension of low part. */ 393 if (type == R_M32R_HI16_SLO 394 && (addend & 0x8000) != 0) 395 addend += 0x10000; 396 397 bfd_put_32 (input_bfd, 398 (insn & 0xffff0000) | ((addend >> 16) & 0xffff), 399 contents + relhi->r_offset); 400 } 401 402 /* Do an R_M32R_LO16 relocation. This is a straightforward 16 bit 403 inplace relocation; this function exists in order to do the 404 R_M32R_HI16_[SU]LO relocation described above. */ 405 406 static bfd_reloc_status_type 407 m32r_elf_lo16_reloc (bfd *input_bfd, 408 arelent *reloc_entry, 409 asymbol *symbol, 410 void * data, 411 asection *input_section, 412 bfd *output_bfd, 413 char **error_message) 414 { 415 /* This part is from bfd_elf_generic_reloc. 416 If we're relocating, and this an external symbol, we don't want 417 to change anything. */ 418 if (output_bfd != NULL 419 && (symbol->flags & BSF_SECTION_SYM) == 0 420 && reloc_entry->addend == 0) 421 { 422 reloc_entry->address += input_section->output_offset; 423 return bfd_reloc_ok; 424 } 425 426 if (m32r_hi16_list != NULL) 427 { 428 struct m32r_hi16 *l; 429 430 l = m32r_hi16_list; 431 while (l != NULL) 432 { 433 unsigned long insn; 434 unsigned long val; 435 unsigned long vallo; 436 struct m32r_hi16 *next; 437 438 /* Do the HI16 relocation. Note that we actually don't need 439 to know anything about the LO16 itself, except where to 440 find the low 16 bits of the addend needed by the LO16. */ 441 insn = bfd_get_32 (input_bfd, l->addr); 442 vallo = ((bfd_get_32 (input_bfd, (bfd_byte *) data + reloc_entry->address) 443 & 0xffff) ^ 0x8000) - 0x8000; 444 val = ((insn & 0xffff) << 16) + vallo; 445 val += l->addend; 446 447 /* Reaccount for sign extension of low part. */ 448 if ((val & 0x8000) != 0) 449 val += 0x10000; 450 451 insn = (insn &~ (bfd_vma) 0xffff) | ((val >> 16) & 0xffff); 452 bfd_put_32 (input_bfd, (bfd_vma) insn, l->addr); 453 454 next = l->next; 455 free (l); 456 l = next; 457 } 458 459 m32r_hi16_list = NULL; 460 } 461 462 /* Now do the LO16 reloc in the usual way. 463 ??? It would be nice to call bfd_elf_generic_reloc here, 464 but we have partial_inplace set. bfd_elf_generic_reloc will 465 pass the handling back to bfd_install_relocation which will install 466 a section relative addend which is wrong. */ 467 return m32r_elf_generic_reloc (input_bfd, reloc_entry, symbol, data, 468 input_section, output_bfd, error_message); 469 } 470 471 472 static reloc_howto_type m32r_elf_howto_table[] = 473 { 474 /* This reloc does nothing. */ 475 HOWTO (R_M32R_NONE, /* type */ 476 0, /* rightshift */ 477 3, /* size (0 = byte, 1 = short, 2 = long) */ 478 0, /* bitsize */ 479 FALSE, /* pc_relative */ 480 0, /* bitpos */ 481 complain_overflow_dont, /* complain_on_overflow */ 482 bfd_elf_generic_reloc, /* special_function */ 483 "R_M32R_NONE", /* name */ 484 FALSE, /* partial_inplace */ 485 0, /* src_mask */ 486 0, /* dst_mask */ 487 FALSE), /* pcrel_offset */ 488 489 /* A 16 bit absolute relocation. */ 490 HOWTO (R_M32R_16, /* type */ 491 0, /* rightshift */ 492 1, /* size (0 = byte, 1 = short, 2 = long) */ 493 16, /* bitsize */ 494 FALSE, /* pc_relative */ 495 0, /* bitpos */ 496 complain_overflow_bitfield, /* complain_on_overflow */ 497 m32r_elf_generic_reloc,/* special_function */ 498 "R_M32R_16", /* name */ 499 TRUE, /* partial_inplace */ 500 0xffff, /* src_mask */ 501 0xffff, /* dst_mask */ 502 FALSE), /* pcrel_offset */ 503 504 /* A 32 bit absolute relocation. */ 505 HOWTO (R_M32R_32, /* type */ 506 0, /* rightshift */ 507 2, /* size (0 = byte, 1 = short, 2 = long) */ 508 32, /* bitsize */ 509 FALSE, /* pc_relative */ 510 0, /* bitpos */ 511 complain_overflow_bitfield, /* complain_on_overflow */ 512 m32r_elf_generic_reloc,/* special_function */ 513 "R_M32R_32", /* name */ 514 TRUE, /* partial_inplace */ 515 0xffffffff, /* src_mask */ 516 0xffffffff, /* dst_mask */ 517 FALSE), /* pcrel_offset */ 518 519 /* A 24 bit address. */ 520 HOWTO (R_M32R_24, /* type */ 521 0, /* rightshift */ 522 2, /* size (0 = byte, 1 = short, 2 = long) */ 523 24, /* bitsize */ 524 FALSE, /* pc_relative */ 525 0, /* bitpos */ 526 complain_overflow_unsigned, /* complain_on_overflow */ 527 m32r_elf_generic_reloc,/* special_function */ 528 "R_M32R_24", /* name */ 529 TRUE, /* partial_inplace */ 530 0xffffff, /* src_mask */ 531 0xffffff, /* dst_mask */ 532 FALSE), /* pcrel_offset */ 533 534 /* An PC Relative 10-bit relocation, shifted by 2. 535 This reloc is complicated because relocations are relative to pc & -4. 536 i.e. branches in the right insn slot use the address of the left insn 537 slot for pc. */ 538 /* ??? It's not clear whether this should have partial_inplace set or not. 539 Branch relaxing in the assembler can store the addend in the insn, 540 and if bfd_install_relocation gets called the addend may get added 541 again. */ 542 HOWTO (R_M32R_10_PCREL, /* type */ 543 2, /* rightshift */ 544 1, /* size (0 = byte, 1 = short, 2 = long) */ 545 10, /* bitsize */ 546 TRUE, /* pc_relative */ 547 0, /* bitpos */ 548 complain_overflow_signed, /* complain_on_overflow */ 549 m32r_elf_10_pcrel_reloc, /* special_function */ 550 "R_M32R_10_PCREL", /* name */ 551 FALSE, /* partial_inplace */ 552 0xff, /* src_mask */ 553 0xff, /* dst_mask */ 554 TRUE), /* pcrel_offset */ 555 556 /* A relative 18 bit relocation, right shifted by 2. */ 557 HOWTO (R_M32R_18_PCREL, /* type */ 558 2, /* rightshift */ 559 2, /* size (0 = byte, 1 = short, 2 = long) */ 560 16, /* bitsize */ 561 TRUE, /* pc_relative */ 562 0, /* bitpos */ 563 complain_overflow_signed, /* complain_on_overflow */ 564 bfd_elf_generic_reloc, /* special_function */ 565 "R_M32R_18_PCREL", /* name */ 566 FALSE, /* partial_inplace */ 567 0xffff, /* src_mask */ 568 0xffff, /* dst_mask */ 569 TRUE), /* pcrel_offset */ 570 571 /* A relative 26 bit relocation, right shifted by 2. */ 572 /* ??? It's not clear whether this should have partial_inplace set or not. 573 Branch relaxing in the assembler can store the addend in the insn, 574 and if bfd_install_relocation gets called the addend may get added 575 again. */ 576 HOWTO (R_M32R_26_PCREL, /* type */ 577 2, /* rightshift */ 578 2, /* size (0 = byte, 1 = short, 2 = long) */ 579 26, /* bitsize */ 580 TRUE, /* pc_relative */ 581 0, /* bitpos */ 582 complain_overflow_signed, /* complain_on_overflow */ 583 bfd_elf_generic_reloc, /* special_function */ 584 "R_M32R_26_PCREL", /* name */ 585 FALSE, /* partial_inplace */ 586 0xffffff, /* src_mask */ 587 0xffffff, /* dst_mask */ 588 TRUE), /* pcrel_offset */ 589 590 /* High 16 bits of address when lower 16 is or'd in. */ 591 HOWTO (R_M32R_HI16_ULO, /* type */ 592 16, /* rightshift */ 593 2, /* size (0 = byte, 1 = short, 2 = long) */ 594 16, /* bitsize */ 595 FALSE, /* pc_relative */ 596 0, /* bitpos */ 597 complain_overflow_dont, /* complain_on_overflow */ 598 m32r_elf_hi16_reloc, /* special_function */ 599 "R_M32R_HI16_ULO", /* name */ 600 TRUE, /* partial_inplace */ 601 0x0000ffff, /* src_mask */ 602 0x0000ffff, /* dst_mask */ 603 FALSE), /* pcrel_offset */ 604 605 /* High 16 bits of address when lower 16 is added in. */ 606 HOWTO (R_M32R_HI16_SLO, /* type */ 607 16, /* rightshift */ 608 2, /* size (0 = byte, 1 = short, 2 = long) */ 609 16, /* bitsize */ 610 FALSE, /* pc_relative */ 611 0, /* bitpos */ 612 complain_overflow_dont, /* complain_on_overflow */ 613 m32r_elf_hi16_reloc, /* special_function */ 614 "R_M32R_HI16_SLO", /* name */ 615 TRUE, /* partial_inplace */ 616 0x0000ffff, /* src_mask */ 617 0x0000ffff, /* dst_mask */ 618 FALSE), /* pcrel_offset */ 619 620 /* Lower 16 bits of address. */ 621 HOWTO (R_M32R_LO16, /* type */ 622 0, /* rightshift */ 623 2, /* size (0 = byte, 1 = short, 2 = long) */ 624 16, /* bitsize */ 625 FALSE, /* pc_relative */ 626 0, /* bitpos */ 627 complain_overflow_dont, /* complain_on_overflow */ 628 m32r_elf_lo16_reloc, /* special_function */ 629 "R_M32R_LO16", /* name */ 630 TRUE, /* partial_inplace */ 631 0x0000ffff, /* src_mask */ 632 0x0000ffff, /* dst_mask */ 633 FALSE), /* pcrel_offset */ 634 635 /* Small data area 16 bits offset. */ 636 HOWTO (R_M32R_SDA16, /* type */ 637 0, /* rightshift */ 638 2, /* size (0 = byte, 1 = short, 2 = long) */ 639 16, /* bitsize */ 640 FALSE, /* pc_relative */ 641 0, /* bitpos */ 642 complain_overflow_signed, /* complain_on_overflow */ 643 m32r_elf_sda16_reloc, /* special_function */ 644 "R_M32R_SDA16", /* name */ 645 TRUE, /* partial_inplace */ /* FIXME: correct? */ 646 0x0000ffff, /* src_mask */ 647 0x0000ffff, /* dst_mask */ 648 FALSE), /* pcrel_offset */ 649 650 /* GNU extension to record C++ vtable hierarchy. */ 651 HOWTO (R_M32R_GNU_VTINHERIT, /* type */ 652 0, /* rightshift */ 653 2, /* size (0 = byte, 1 = short, 2 = long) */ 654 0, /* bitsize */ 655 FALSE, /* pc_relative */ 656 0, /* bitpos */ 657 complain_overflow_dont, /* complain_on_overflow */ 658 NULL, /* special_function */ 659 "R_M32R_GNU_VTINHERIT", /* name */ 660 FALSE, /* partial_inplace */ 661 0, /* src_mask */ 662 0, /* dst_mask */ 663 FALSE), /* pcrel_offset */ 664 665 /* GNU extension to record C++ vtable member usage. */ 666 HOWTO (R_M32R_GNU_VTENTRY, /* type */ 667 0, /* rightshift */ 668 2, /* size (0 = byte, 1 = short, 2 = long) */ 669 0, /* bitsize */ 670 FALSE, /* pc_relative */ 671 0, /* bitpos */ 672 complain_overflow_dont, /* complain_on_overflow */ 673 _bfd_elf_rel_vtable_reloc_fn, /* special_function */ 674 "R_M32R_GNU_VTENTRY", /* name */ 675 FALSE, /* partial_inplace */ 676 0, /* src_mask */ 677 0, /* dst_mask */ 678 FALSE), /* pcrel_offset */ 679 680 EMPTY_HOWTO (13), 681 EMPTY_HOWTO (14), 682 EMPTY_HOWTO (15), 683 EMPTY_HOWTO (16), 684 EMPTY_HOWTO (17), 685 EMPTY_HOWTO (18), 686 EMPTY_HOWTO (19), 687 EMPTY_HOWTO (20), 688 EMPTY_HOWTO (21), 689 EMPTY_HOWTO (22), 690 EMPTY_HOWTO (23), 691 EMPTY_HOWTO (24), 692 EMPTY_HOWTO (25), 693 EMPTY_HOWTO (26), 694 EMPTY_HOWTO (27), 695 EMPTY_HOWTO (28), 696 EMPTY_HOWTO (29), 697 EMPTY_HOWTO (30), 698 EMPTY_HOWTO (31), 699 EMPTY_HOWTO (32), 700 701 /* A 16 bit absolute relocation. */ 702 HOWTO (R_M32R_16_RELA, /* type */ 703 0, /* rightshift */ 704 1, /* size (0 = byte, 1 = short, 2 = long) */ 705 16, /* bitsize */ 706 FALSE, /* pc_relative */ 707 0, /* bitpos */ 708 complain_overflow_bitfield, /* complain_on_overflow */ 709 bfd_elf_generic_reloc, /* special_function */ 710 "R_M32R_16_RELA", /* name */ 711 FALSE, /* partial_inplace */ 712 0xffff, /* src_mask */ 713 0xffff, /* dst_mask */ 714 FALSE), /* pcrel_offset */ 715 716 /* A 32 bit absolute relocation. */ 717 HOWTO (R_M32R_32_RELA, /* type */ 718 0, /* rightshift */ 719 2, /* size (0 = byte, 1 = short, 2 = long) */ 720 32, /* bitsize */ 721 FALSE, /* pc_relative */ 722 0, /* bitpos */ 723 complain_overflow_bitfield, /* complain_on_overflow */ 724 bfd_elf_generic_reloc,/* special_function */ 725 "R_M32R_32_RELA", /* name */ 726 FALSE, /* partial_inplace */ 727 0xffffffff, /* src_mask */ 728 0xffffffff, /* dst_mask */ 729 FALSE), /* pcrel_offset */ 730 731 /* A 24 bit address. */ 732 HOWTO (R_M32R_24_RELA, /* type */ 733 0, /* rightshift */ 734 2, /* size (0 = byte, 1 = short, 2 = long) */ 735 24, /* bitsize */ 736 FALSE, /* pc_relative */ 737 0, /* bitpos */ 738 complain_overflow_unsigned, /* complain_on_overflow */ 739 bfd_elf_generic_reloc,/* special_function */ 740 "R_M32R_24_RELA", /* name */ 741 FALSE, /* partial_inplace */ 742 0xffffff, /* src_mask */ 743 0xffffff, /* dst_mask */ 744 FALSE), /* pcrel_offset */ 745 746 HOWTO (R_M32R_10_PCREL_RELA, /* type */ 747 2, /* rightshift */ 748 1, /* size (0 = byte, 1 = short, 2 = long) */ 749 10, /* bitsize */ 750 TRUE, /* pc_relative */ 751 0, /* bitpos */ 752 complain_overflow_signed, /* complain_on_overflow */ 753 m32r_elf_10_pcrel_reloc, /* special_function */ 754 "R_M32R_10_PCREL_RELA",/* name */ 755 FALSE, /* partial_inplace */ 756 0xff, /* src_mask */ 757 0xff, /* dst_mask */ 758 TRUE), /* pcrel_offset */ 759 760 /* A relative 18 bit relocation, right shifted by 2. */ 761 HOWTO (R_M32R_18_PCREL_RELA, /* type */ 762 2, /* rightshift */ 763 2, /* size (0 = byte, 1 = short, 2 = long) */ 764 16, /* bitsize */ 765 TRUE, /* pc_relative */ 766 0, /* bitpos */ 767 complain_overflow_signed, /* complain_on_overflow */ 768 bfd_elf_generic_reloc, /* special_function */ 769 "R_M32R_18_PCREL_RELA",/* name */ 770 FALSE, /* partial_inplace */ 771 0xffff, /* src_mask */ 772 0xffff, /* dst_mask */ 773 TRUE), /* pcrel_offset */ 774 775 /* A relative 26 bit relocation, right shifted by 2. */ 776 HOWTO (R_M32R_26_PCREL_RELA, /* type */ 777 2, /* rightshift */ 778 2, /* size (0 = byte, 1 = short, 2 = long) */ 779 26, /* bitsize */ 780 TRUE, /* pc_relative */ 781 0, /* bitpos */ 782 complain_overflow_signed, /* complain_on_overflow */ 783 bfd_elf_generic_reloc, /* special_function */ 784 "R_M32R_26_PCREL_RELA",/* name */ 785 FALSE, /* partial_inplace */ 786 0xffffff, /* src_mask */ 787 0xffffff, /* dst_mask */ 788 TRUE), /* pcrel_offset */ 789 790 /* High 16 bits of address when lower 16 is or'd in. */ 791 HOWTO (R_M32R_HI16_ULO_RELA, /* type */ 792 16, /* rightshift */ 793 2, /* size (0 = byte, 1 = short, 2 = long) */ 794 16, /* bitsize */ 795 FALSE, /* pc_relative */ 796 0, /* bitpos */ 797 complain_overflow_dont, /* complain_on_overflow */ 798 bfd_elf_generic_reloc, /* special_function */ 799 "R_M32R_HI16_ULO_RELA",/* name */ 800 FALSE, /* partial_inplace */ 801 0x0000ffff, /* src_mask */ 802 0x0000ffff, /* dst_mask */ 803 FALSE), /* pcrel_offset */ 804 805 /* High 16 bits of address when lower 16 is added in. */ 806 HOWTO (R_M32R_HI16_SLO_RELA, /* type */ 807 16, /* rightshift */ 808 2, /* size (0 = byte, 1 = short, 2 = long) */ 809 16, /* bitsize */ 810 FALSE, /* pc_relative */ 811 0, /* bitpos */ 812 complain_overflow_dont, /* complain_on_overflow */ 813 bfd_elf_generic_reloc, /* special_function */ 814 "R_M32R_HI16_SLO_RELA",/* name */ 815 FALSE, /* partial_inplace */ 816 0x0000ffff, /* src_mask */ 817 0x0000ffff, /* dst_mask */ 818 FALSE), /* pcrel_offset */ 819 820 /* Lower 16 bits of address. */ 821 HOWTO (R_M32R_LO16_RELA, /* type */ 822 0, /* rightshift */ 823 2, /* size (0 = byte, 1 = short, 2 = long) */ 824 16, /* bitsize */ 825 FALSE, /* pc_relative */ 826 0, /* bitpos */ 827 complain_overflow_dont, /* complain_on_overflow */ 828 bfd_elf_generic_reloc, /* special_function */ 829 "R_M32R_LO16_RELA", /* name */ 830 FALSE, /* partial_inplace */ 831 0x0000ffff, /* src_mask */ 832 0x0000ffff, /* dst_mask */ 833 FALSE), /* pcrel_offset */ 834 835 /* Small data area 16 bits offset. */ 836 HOWTO (R_M32R_SDA16_RELA, /* type */ 837 0, /* rightshift */ 838 2, /* size (0 = byte, 1 = short, 2 = long) */ 839 16, /* bitsize */ 840 FALSE, /* pc_relative */ 841 0, /* bitpos */ 842 complain_overflow_signed, /* complain_on_overflow */ 843 bfd_elf_generic_reloc, /* special_function */ 844 "R_M32R_SDA16_RELA", /* name */ 845 TRUE, /* partial_inplace */ /* FIXME: correct? */ 846 0x0000ffff, /* src_mask */ 847 0x0000ffff, /* dst_mask */ 848 FALSE), /* pcrel_offset */ 849 850 /* GNU extension to record C++ vtable hierarchy. */ 851 HOWTO (R_M32R_RELA_GNU_VTINHERIT, /* type */ 852 0, /* rightshift */ 853 2, /* size (0 = byte, 1 = short, 2 = long) */ 854 0, /* bitsize */ 855 FALSE, /* pc_relative */ 856 0, /* bitpos */ 857 complain_overflow_dont, /* complain_on_overflow */ 858 NULL, /* special_function */ 859 "R_M32R_RELA_GNU_VTINHERIT", /* name */ 860 FALSE, /* partial_inplace */ 861 0, /* src_mask */ 862 0, /* dst_mask */ 863 FALSE), /* pcrel_offset */ 864 865 /* GNU extension to record C++ vtable member usage. */ 866 HOWTO (R_M32R_RELA_GNU_VTENTRY, /* type */ 867 0, /* rightshift */ 868 2, /* size (0 = byte, 1 = short, 2 = long) */ 869 0, /* bitsize */ 870 FALSE, /* pc_relative */ 871 0, /* bitpos */ 872 complain_overflow_dont, /* complain_on_overflow */ 873 _bfd_elf_rel_vtable_reloc_fn, /* special_function */ 874 "R_M32R_RELA_GNU_VTENTRY", /* name */ 875 FALSE, /* partial_inplace */ 876 0, /* src_mask */ 877 0, /* dst_mask */ 878 FALSE), /* pcrel_offset */ 879 880 /* A 32 bit PC relative relocation. */ 881 HOWTO (R_M32R_REL32, /* type */ 882 0, /* rightshift */ 883 2, /* size (0 = byte, 1 = short, 2 = long) */ 884 32, /* bitsize */ 885 TRUE, /* pc_relative */ 886 0, /* bitpos */ 887 complain_overflow_bitfield, /* complain_on_overflow */ 888 bfd_elf_generic_reloc,/* special_function */ 889 "R_M32R_REL32", /* name */ 890 FALSE, /* partial_inplace */ 891 0xffffffff, /* src_mask */ 892 0xffffffff, /* dst_mask */ 893 TRUE), /* pcrel_offset */ 894 895 EMPTY_HOWTO (46), 896 EMPTY_HOWTO (47), 897 898 /* Like R_M32R_24, but referring to the GOT table entry for 899 the symbol. */ 900 HOWTO (R_M32R_GOT24, /* type */ 901 0, /* rightshift */ 902 2, /* size (0 = byte, 1 = short, 2 = long) */ 903 24, /* bitsize */ 904 FALSE, /* pc_relative */ 905 0, /* bitpos */ 906 complain_overflow_unsigned, /* complain_on_overflow */ 907 bfd_elf_generic_reloc, /* special_function */ 908 "R_M32R_GOT24", /* name */ 909 FALSE, /* partial_inplace */ 910 0xffffff, /* src_mask */ 911 0xffffff, /* dst_mask */ 912 FALSE), /* pcrel_offset */ 913 914 /* Like R_M32R_PCREL, but referring to the procedure linkage table 915 entry for the symbol. */ 916 HOWTO (R_M32R_26_PLTREL, /* type */ 917 2, /* rightshift */ 918 2, /* size (0 = byte, 1 = short, 2 = long) */ 919 24, /* bitsize */ 920 TRUE, /* pc_relative */ 921 0, /* bitpos */ 922 complain_overflow_signed, /* complain_on_overflow */ 923 bfd_elf_generic_reloc, /* special_function */ 924 "R_M32R_26_PLTREL", /* name */ 925 FALSE, /* partial_inplace */ 926 0xffffff, /* src_mask */ 927 0xffffff, /* dst_mask */ 928 TRUE), /* pcrel_offset */ 929 930 /* This is used only by the dynamic linker. The symbol should exist 931 both in the object being run and in some shared library. The 932 dynamic linker copies the data addressed by the symbol from the 933 shared library into the object, because the object being 934 run has to have the data at some particular address. */ 935 HOWTO (R_M32R_COPY, /* type */ 936 0, /* rightshift */ 937 2, /* size (0 = byte, 1 = short, 2 = long) */ 938 32, /* bitsize */ 939 FALSE, /* pc_relative */ 940 0, /* bitpos */ 941 complain_overflow_bitfield, /* complain_on_overflow */ 942 bfd_elf_generic_reloc, /* special_function */ 943 "R_M32R_COPY", /* name */ 944 FALSE, /* partial_inplace */ 945 0xffffffff, /* src_mask */ 946 0xffffffff, /* dst_mask */ 947 FALSE), /* pcrel_offset */ 948 949 /* Like R_M32R_24, but used when setting global offset table 950 entries. */ 951 HOWTO (R_M32R_GLOB_DAT, /* type */ 952 0, /* rightshift */ 953 2, /* size (0 = byte, 1 = short, 2 = long) */ 954 32, /* bitsize */ 955 FALSE, /* pc_relative */ 956 0, /* bitpos */ 957 complain_overflow_bitfield, /* complain_on_overflow */ 958 bfd_elf_generic_reloc, /* special_function */ 959 "R_M32R_GLOB_DAT", /* name */ 960 FALSE, /* partial_inplace */ 961 0xffffffff, /* src_mask */ 962 0xffffffff, /* dst_mask */ 963 FALSE), /* pcrel_offset */ 964 965 /* Marks a procedure linkage table entry for a symbol. */ 966 HOWTO (R_M32R_JMP_SLOT, /* type */ 967 0, /* rightshift */ 968 2, /* size (0 = byte, 1 = short, 2 = long) */ 969 32, /* bitsize */ 970 FALSE, /* pc_relative */ 971 0, /* bitpos */ 972 complain_overflow_bitfield, /* complain_on_overflow */ 973 bfd_elf_generic_reloc, /* special_function */ 974 "R_M32R_JMP_SLOT", /* name */ 975 FALSE, /* partial_inplace */ 976 0xffffffff, /* src_mask */ 977 0xffffffff, /* dst_mask */ 978 FALSE), /* pcrel_offset */ 979 980 /* Used only by the dynamic linker. When the object is run, this 981 longword is set to the load address of the object, plus the 982 addend. */ 983 HOWTO (R_M32R_RELATIVE, /* type */ 984 0, /* rightshift */ 985 2, /* size (0 = byte, 1 = short, 2 = long) */ 986 32, /* bitsize */ 987 FALSE, /* pc_relative */ 988 0, /* bitpos */ 989 complain_overflow_bitfield, /* complain_on_overflow */ 990 bfd_elf_generic_reloc, /* special_function */ 991 "R_M32R_RELATIVE", /* name */ 992 FALSE, /* partial_inplace */ 993 0xffffffff, /* src_mask */ 994 0xffffffff, /* dst_mask */ 995 FALSE), /* pcrel_offset */ 996 997 HOWTO (R_M32R_GOTOFF, /* type */ 998 0, /* rightshift */ 999 2, /* size (0 = byte, 1 = short, 2 = long) */ 1000 24, /* bitsize */ 1001 FALSE, /* pc_relative */ 1002 0, /* bitpos */ 1003 complain_overflow_bitfield, /* complain_on_overflow */ 1004 bfd_elf_generic_reloc, /* special_function */ 1005 "R_M32R_GOTOFF", /* name */ 1006 FALSE, /* partial_inplace */ 1007 0xffffff, /* src_mask */ 1008 0xffffff, /* dst_mask */ 1009 FALSE), /* pcrel_offset */ 1010 1011 /* An PC Relative 24-bit relocation used when setting PIC offset 1012 table register. */ 1013 HOWTO (R_M32R_GOTPC24, /* type */ 1014 0, /* rightshift */ 1015 2, /* size (0 = byte, 1 = short, 2 = long) */ 1016 24, /* bitsize */ 1017 TRUE, /* pc_relative */ 1018 0, /* bitpos */ 1019 complain_overflow_unsigned, /* complain_on_overflow */ 1020 bfd_elf_generic_reloc, /* special_function */ 1021 "R_M32R_GOTPC24", /* name */ 1022 FALSE, /* partial_inplace */ 1023 0xffffff, /* src_mask */ 1024 0xffffff, /* dst_mask */ 1025 TRUE), /* pcrel_offset */ 1026 1027 /* Like R_M32R_HI16_ULO, but referring to the GOT table entry for 1028 the symbol. */ 1029 HOWTO (R_M32R_GOT16_HI_ULO, /* type */ 1030 16, /* rightshift */ 1031 2, /* size (0 = byte, 1 = short, 2 = long) */ 1032 16, /* bitsize */ 1033 FALSE, /* pc_relative */ 1034 0, /* bitpos */ 1035 complain_overflow_dont, /* complain_on_overflow */ 1036 bfd_elf_generic_reloc, /* special_function */ 1037 "R_M32R_GOT16_HI_ULO", /* name */ 1038 FALSE, /* partial_inplace */ 1039 0x0000ffff, /* src_mask */ 1040 0x0000ffff, /* dst_mask */ 1041 FALSE), /* pcrel_offset */ 1042 1043 /* Like R_M32R_HI16_SLO, but referring to the GOT table entry for 1044 the symbol. */ 1045 HOWTO (R_M32R_GOT16_HI_SLO, /* type */ 1046 16, /* rightshift */ 1047 2, /* size (0 = byte, 1 = short, 2 = long) */ 1048 16, /* bitsize */ 1049 FALSE, /* pc_relative */ 1050 0, /* bitpos */ 1051 complain_overflow_dont, /* complain_on_overflow */ 1052 bfd_elf_generic_reloc, /* special_function */ 1053 "R_M32R_GOT16_HI_SLO", /* name */ 1054 FALSE, /* partial_inplace */ 1055 0x0000ffff, /* src_mask */ 1056 0x0000ffff, /* dst_mask */ 1057 FALSE), /* pcrel_offset */ 1058 1059 /* Like R_M32R_LO16, but referring to the GOT table entry for 1060 the symbol. */ 1061 HOWTO (R_M32R_GOT16_LO, /* type */ 1062 0, /* rightshift */ 1063 2, /* size (0 = byte, 1 = short, 2 = long) */ 1064 16, /* bitsize */ 1065 FALSE, /* pc_relative */ 1066 0, /* bitpos */ 1067 complain_overflow_dont, /* complain_on_overflow */ 1068 bfd_elf_generic_reloc, /* special_function */ 1069 "R_M32R_GOT16_LO", /* name */ 1070 FALSE, /* partial_inplace */ 1071 0x0000ffff, /* src_mask */ 1072 0x0000ffff, /* dst_mask */ 1073 FALSE), /* pcrel_offset */ 1074 1075 /* An PC Relative relocation used when setting PIC offset table register. 1076 Like R_M32R_HI16_ULO, but referring to the GOT table entry for 1077 the symbol. */ 1078 HOWTO (R_M32R_GOTPC_HI_ULO, /* type */ 1079 16, /* rightshift */ 1080 2, /* size (0 = byte, 1 = short, 2 = long) */ 1081 16, /* bitsize */ 1082 FALSE, /* pc_relative */ 1083 0, /* bitpos */ 1084 complain_overflow_dont, /* complain_on_overflow */ 1085 bfd_elf_generic_reloc, /* special_function */ 1086 "R_M32R_GOTPC_HI_ULO", /* name */ 1087 FALSE, /* partial_inplace */ 1088 0x0000ffff, /* src_mask */ 1089 0x0000ffff, /* dst_mask */ 1090 TRUE), /* pcrel_offset */ 1091 1092 /* An PC Relative relocation used when setting PIC offset table register. 1093 Like R_M32R_HI16_SLO, but referring to the GOT table entry for 1094 the symbol. */ 1095 HOWTO (R_M32R_GOTPC_HI_SLO, /* type */ 1096 16, /* rightshift */ 1097 2, /* size (0 = byte, 1 = short, 2 = long) */ 1098 16, /* bitsize */ 1099 FALSE, /* pc_relative */ 1100 0, /* bitpos */ 1101 complain_overflow_dont, /* complain_on_overflow */ 1102 bfd_elf_generic_reloc, /* special_function */ 1103 "R_M32R_GOTPC_HI_SLO", /* name */ 1104 FALSE, /* partial_inplace */ 1105 0x0000ffff, /* src_mask */ 1106 0x0000ffff, /* dst_mask */ 1107 TRUE), /* pcrel_offset */ 1108 1109 /* An PC Relative relocation used when setting PIC offset table register. 1110 Like R_M32R_LO16, but referring to the GOT table entry for 1111 the symbol. */ 1112 HOWTO (R_M32R_GOTPC_LO, /* type */ 1113 0, /* rightshift */ 1114 2, /* size (0 = byte, 1 = short, 2 = long) */ 1115 16, /* bitsize */ 1116 FALSE, /* pc_relative */ 1117 0, /* bitpos */ 1118 complain_overflow_dont, /* complain_on_overflow */ 1119 bfd_elf_generic_reloc, /* special_function */ 1120 "R_M32R_GOTPC_LO", /* name */ 1121 FALSE, /* partial_inplace */ 1122 0x0000ffff, /* src_mask */ 1123 0x0000ffff, /* dst_mask */ 1124 TRUE), /* pcrel_offset */ 1125 1126 HOWTO (R_M32R_GOTOFF_HI_ULO, /* type */ 1127 16, /* rightshift */ 1128 2, /* size (0 = byte, 1 = short, 2 = long) */ 1129 16, /* bitsize */ 1130 FALSE, /* pc_relative */ 1131 0, /* bitpos */ 1132 complain_overflow_dont, /* complain_on_overflow */ 1133 bfd_elf_generic_reloc, /* special_function */ 1134 "R_M32R_GOTOFF_HI_ULO",/* name */ 1135 FALSE, /* partial_inplace */ 1136 0x0000ffff, /* src_mask */ 1137 0x0000ffff, /* dst_mask */ 1138 FALSE), /* pcrel_offset */ 1139 1140 HOWTO (R_M32R_GOTOFF_HI_SLO, /* type */ 1141 16, /* rightshift */ 1142 2, /* size (0 = byte, 1 = short, 2 = long) */ 1143 16, /* bitsize */ 1144 FALSE, /* pc_relative */ 1145 0, /* bitpos */ 1146 complain_overflow_dont, /* complain_on_overflow */ 1147 bfd_elf_generic_reloc, /* special_function */ 1148 "R_M32R_GOTOFF_HI_SLO",/* name */ 1149 FALSE, /* partial_inplace */ 1150 0x0000ffff, /* src_mask */ 1151 0x0000ffff, /* dst_mask */ 1152 FALSE), /* pcrel_offset */ 1153 1154 HOWTO (R_M32R_GOTOFF_LO, /* type */ 1155 0, /* rightshift */ 1156 2, /* size (0 = byte, 1 = short, 2 = long) */ 1157 16, /* bitsize */ 1158 FALSE, /* pc_relative */ 1159 0, /* bitpos */ 1160 complain_overflow_dont, /* complain_on_overflow */ 1161 bfd_elf_generic_reloc, /* special_function */ 1162 "R_M32R_GOTOFF_LO", /* name */ 1163 FALSE, /* partial_inplace */ 1164 0x0000ffff, /* src_mask */ 1165 0x0000ffff, /* dst_mask */ 1166 FALSE), /* pcrel_offset */ 1167 }; 1168 1169 /* Map BFD reloc types to M32R ELF reloc types. */ 1170 1171 struct m32r_reloc_map 1172 { 1173 bfd_reloc_code_real_type bfd_reloc_val; 1174 unsigned char elf_reloc_val; 1175 }; 1176 1177 #ifdef USE_M32R_OLD_RELOC 1178 static const struct m32r_reloc_map m32r_reloc_map_old[] = 1179 { 1180 { BFD_RELOC_NONE, R_M32R_NONE }, 1181 { BFD_RELOC_16, R_M32R_16 }, 1182 { BFD_RELOC_32, R_M32R_32 }, 1183 { BFD_RELOC_M32R_24, R_M32R_24 }, 1184 { BFD_RELOC_M32R_10_PCREL, R_M32R_10_PCREL }, 1185 { BFD_RELOC_M32R_18_PCREL, R_M32R_18_PCREL }, 1186 { BFD_RELOC_M32R_26_PCREL, R_M32R_26_PCREL }, 1187 { BFD_RELOC_M32R_HI16_ULO, R_M32R_HI16_ULO }, 1188 { BFD_RELOC_M32R_HI16_SLO, R_M32R_HI16_SLO }, 1189 { BFD_RELOC_M32R_LO16, R_M32R_LO16 }, 1190 { BFD_RELOC_M32R_SDA16, R_M32R_SDA16 }, 1191 { BFD_RELOC_VTABLE_INHERIT, R_M32R_GNU_VTINHERIT }, 1192 { BFD_RELOC_VTABLE_ENTRY, R_M32R_GNU_VTENTRY }, 1193 }; 1194 #else 1195 static const struct m32r_reloc_map m32r_reloc_map[] = 1196 { 1197 { BFD_RELOC_NONE, R_M32R_NONE }, 1198 { BFD_RELOC_16, R_M32R_16_RELA }, 1199 { BFD_RELOC_32, R_M32R_32_RELA }, 1200 { BFD_RELOC_M32R_24, R_M32R_24_RELA }, 1201 { BFD_RELOC_M32R_10_PCREL, R_M32R_10_PCREL_RELA }, 1202 { BFD_RELOC_M32R_18_PCREL, R_M32R_18_PCREL_RELA }, 1203 { BFD_RELOC_M32R_26_PCREL, R_M32R_26_PCREL_RELA }, 1204 { BFD_RELOC_M32R_HI16_ULO, R_M32R_HI16_ULO_RELA }, 1205 { BFD_RELOC_M32R_HI16_SLO, R_M32R_HI16_SLO_RELA }, 1206 { BFD_RELOC_M32R_LO16, R_M32R_LO16_RELA }, 1207 { BFD_RELOC_M32R_SDA16, R_M32R_SDA16_RELA }, 1208 { BFD_RELOC_VTABLE_INHERIT, R_M32R_RELA_GNU_VTINHERIT }, 1209 { BFD_RELOC_VTABLE_ENTRY, R_M32R_RELA_GNU_VTENTRY }, 1210 { BFD_RELOC_32_PCREL, R_M32R_REL32 }, 1211 1212 { BFD_RELOC_M32R_GOT24, R_M32R_GOT24 }, 1213 { BFD_RELOC_M32R_26_PLTREL, R_M32R_26_PLTREL }, 1214 { BFD_RELOC_M32R_COPY, R_M32R_COPY }, 1215 { BFD_RELOC_M32R_GLOB_DAT, R_M32R_GLOB_DAT }, 1216 { BFD_RELOC_M32R_JMP_SLOT, R_M32R_JMP_SLOT }, 1217 { BFD_RELOC_M32R_RELATIVE, R_M32R_RELATIVE }, 1218 { BFD_RELOC_M32R_GOTOFF, R_M32R_GOTOFF }, 1219 { BFD_RELOC_M32R_GOTPC24, R_M32R_GOTPC24 }, 1220 { BFD_RELOC_M32R_GOT16_HI_ULO, R_M32R_GOT16_HI_ULO }, 1221 { BFD_RELOC_M32R_GOT16_HI_SLO, R_M32R_GOT16_HI_SLO }, 1222 { BFD_RELOC_M32R_GOT16_LO, R_M32R_GOT16_LO }, 1223 { BFD_RELOC_M32R_GOTPC_HI_ULO, R_M32R_GOTPC_HI_ULO }, 1224 { BFD_RELOC_M32R_GOTPC_HI_SLO, R_M32R_GOTPC_HI_SLO }, 1225 { BFD_RELOC_M32R_GOTPC_LO, R_M32R_GOTPC_LO }, 1226 { BFD_RELOC_M32R_GOTOFF_HI_ULO, R_M32R_GOTOFF_HI_ULO }, 1227 { BFD_RELOC_M32R_GOTOFF_HI_SLO, R_M32R_GOTOFF_HI_SLO }, 1228 { BFD_RELOC_M32R_GOTOFF_LO, R_M32R_GOTOFF_LO }, 1229 }; 1230 #endif 1231 1232 static reloc_howto_type * 1233 bfd_elf32_bfd_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED, 1234 bfd_reloc_code_real_type code) 1235 { 1236 unsigned int i; 1237 1238 #ifdef USE_M32R_OLD_RELOC 1239 for (i = 0; 1240 i < sizeof (m32r_reloc_map_old) / sizeof (struct m32r_reloc_map); 1241 i++) 1242 if (m32r_reloc_map_old[i].bfd_reloc_val == code) 1243 return &m32r_elf_howto_table[m32r_reloc_map_old[i].elf_reloc_val]; 1244 1245 #else /* ! USE_M32R_OLD_RELOC */ 1246 1247 for (i = 0; 1248 i < sizeof (m32r_reloc_map) / sizeof (struct m32r_reloc_map); 1249 i++) 1250 if (m32r_reloc_map[i].bfd_reloc_val == code) 1251 return &m32r_elf_howto_table[m32r_reloc_map[i].elf_reloc_val]; 1252 #endif 1253 1254 return NULL; 1255 } 1256 1257 static reloc_howto_type * 1258 bfd_elf32_bfd_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED, 1259 const char *r_name) 1260 { 1261 unsigned int i; 1262 1263 for (i = 0; 1264 i < sizeof (m32r_elf_howto_table) / sizeof (m32r_elf_howto_table[0]); 1265 i++) 1266 if (m32r_elf_howto_table[i].name != NULL 1267 && strcasecmp (m32r_elf_howto_table[i].name, r_name) == 0) 1268 return &m32r_elf_howto_table[i]; 1269 1270 return NULL; 1271 } 1272 1273 /* Set the howto pointer for an M32R ELF reloc. */ 1274 1275 static void 1276 m32r_info_to_howto_rel (bfd *abfd ATTRIBUTE_UNUSED, 1277 arelent *cache_ptr, 1278 Elf_Internal_Rela *dst) 1279 { 1280 unsigned int r_type; 1281 1282 r_type = ELF32_R_TYPE (dst->r_info); 1283 if (r_type > (unsigned int) R_M32R_GNU_VTENTRY) 1284 { 1285 /* xgettext:c-format */ 1286 _bfd_error_handler (_("%B: invalid M32R reloc number: %d"), abfd, r_type); 1287 r_type = 0; 1288 } 1289 cache_ptr->howto = &m32r_elf_howto_table[r_type]; 1290 } 1291 1292 static void 1293 m32r_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED, 1294 arelent *cache_ptr, 1295 Elf_Internal_Rela *dst) 1296 { 1297 BFD_ASSERT ((ELF32_R_TYPE(dst->r_info) == (unsigned int) R_M32R_NONE) 1298 || ((ELF32_R_TYPE(dst->r_info) > (unsigned int) R_M32R_GNU_VTENTRY) 1299 && (ELF32_R_TYPE(dst->r_info) < (unsigned int) R_M32R_max))); 1300 cache_ptr->howto = &m32r_elf_howto_table[ELF32_R_TYPE(dst->r_info)]; 1301 } 1302 1303 1304 /* Given a BFD section, try to locate the corresponding ELF section 1305 index. */ 1306 1307 static bfd_boolean 1308 _bfd_m32r_elf_section_from_bfd_section (bfd *abfd ATTRIBUTE_UNUSED, 1309 asection *sec, 1310 int *retval) 1311 { 1312 if (strcmp (bfd_get_section_name (abfd, sec), ".scommon") == 0) 1313 { 1314 *retval = SHN_M32R_SCOMMON; 1315 return TRUE; 1316 } 1317 return FALSE; 1318 } 1319 1320 /* M32R ELF uses two common sections. One is the usual one, and the other 1321 is for small objects. All the small objects are kept together, and then 1322 referenced via one register, which yields faster assembler code. It is 1323 up to the compiler to emit an instruction to load the register with 1324 _SDA_BASE. This is what we use for the small common section. This 1325 approach is copied from elf32-mips.c. */ 1326 static asection m32r_elf_scom_section; 1327 static asymbol m32r_elf_scom_symbol; 1328 static asymbol *m32r_elf_scom_symbol_ptr; 1329 1330 /* Handle the special M32R section numbers that a symbol may use. */ 1331 1332 static void 1333 _bfd_m32r_elf_symbol_processing (bfd *abfd ATTRIBUTE_UNUSED, asymbol *asym) 1334 { 1335 elf_symbol_type *elfsym = (elf_symbol_type *) asym; 1336 1337 switch (elfsym->internal_elf_sym.st_shndx) 1338 { 1339 case SHN_M32R_SCOMMON: 1340 if (m32r_elf_scom_section.name == NULL) 1341 { 1342 /* Initialize the small common section. */ 1343 m32r_elf_scom_section.name = ".scommon"; 1344 m32r_elf_scom_section.flags = SEC_IS_COMMON; 1345 m32r_elf_scom_section.output_section = &m32r_elf_scom_section; 1346 m32r_elf_scom_section.symbol = &m32r_elf_scom_symbol; 1347 m32r_elf_scom_section.symbol_ptr_ptr = &m32r_elf_scom_symbol_ptr; 1348 m32r_elf_scom_symbol.name = ".scommon"; 1349 m32r_elf_scom_symbol.flags = BSF_SECTION_SYM; 1350 m32r_elf_scom_symbol.section = &m32r_elf_scom_section; 1351 m32r_elf_scom_symbol_ptr = &m32r_elf_scom_symbol; 1352 } 1353 asym->section = &m32r_elf_scom_section; 1354 asym->value = elfsym->internal_elf_sym.st_size; 1355 break; 1356 } 1357 } 1358 1359 /* Hook called by the linker routine which adds symbols from an object 1360 file. We must handle the special M32R section numbers here. 1361 We also keep watching for whether we need to create the sdata special 1362 linker sections. */ 1363 1364 static bfd_boolean 1365 m32r_elf_add_symbol_hook (bfd *abfd, 1366 struct bfd_link_info *info, 1367 Elf_Internal_Sym *sym, 1368 const char **namep, 1369 flagword *flagsp ATTRIBUTE_UNUSED, 1370 asection **secp, 1371 bfd_vma *valp) 1372 { 1373 if (! bfd_link_relocatable (info) 1374 && (*namep)[0] == '_' && (*namep)[1] == 'S' 1375 && strcmp (*namep, "_SDA_BASE_") == 0 1376 && is_elf_hash_table (info->hash)) 1377 { 1378 /* This is simpler than using _bfd_elf_create_linker_section 1379 (our needs are simpler than ppc's needs). Also 1380 _bfd_elf_create_linker_section currently has a bug where if a .sdata 1381 section already exists a new one is created that follows it which 1382 screws of _SDA_BASE_ address calcs because output_offset != 0. */ 1383 struct elf_link_hash_entry *h; 1384 struct bfd_link_hash_entry *bh; 1385 asection *s = bfd_get_section_by_name (abfd, ".sdata"); 1386 1387 /* The following code was cobbled from elf32-ppc.c and elflink.c. */ 1388 if (s == NULL) 1389 { 1390 flagword flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS 1391 | SEC_IN_MEMORY | SEC_LINKER_CREATED); 1392 1393 s = bfd_make_section_anyway_with_flags (abfd, ".sdata", 1394 flags); 1395 if (s == NULL) 1396 return FALSE; 1397 if (! bfd_set_section_alignment (abfd, s, 2)) 1398 return FALSE; 1399 } 1400 1401 bh = bfd_link_hash_lookup (info->hash, "_SDA_BASE_", 1402 FALSE, FALSE, FALSE); 1403 1404 if ((bh == NULL || bh->type == bfd_link_hash_undefined) 1405 && !(_bfd_generic_link_add_one_symbol (info, 1406 abfd, 1407 "_SDA_BASE_", 1408 BSF_GLOBAL, 1409 s, 1410 (bfd_vma) 32768, 1411 NULL, 1412 FALSE, 1413 get_elf_backend_data (abfd)->collect, 1414 &bh))) 1415 return FALSE; 1416 h = (struct elf_link_hash_entry *) bh; 1417 h->type = STT_OBJECT; 1418 } 1419 1420 switch (sym->st_shndx) 1421 { 1422 case SHN_M32R_SCOMMON: 1423 *secp = bfd_make_section_old_way (abfd, ".scommon"); 1424 (*secp)->flags |= SEC_IS_COMMON; 1425 *valp = sym->st_size; 1426 break; 1427 } 1428 1429 return TRUE; 1430 } 1431 1432 /* We have to figure out the SDA_BASE value, so that we can adjust the 1433 symbol value correctly. We look up the symbol _SDA_BASE_ in the output 1434 BFD. If we can't find it, we're stuck. We cache it in the ELF 1435 target data. We don't need to adjust the symbol value for an 1436 external symbol if we are producing relocatable output. */ 1437 1438 static bfd_reloc_status_type 1439 m32r_elf_final_sda_base (bfd *output_bfd, 1440 struct bfd_link_info *info, 1441 const char **error_message, 1442 bfd_vma *psb) 1443 { 1444 if (elf_gp (output_bfd) == 0) 1445 { 1446 struct bfd_link_hash_entry *h; 1447 1448 h = bfd_link_hash_lookup (info->hash, "_SDA_BASE_", FALSE, FALSE, TRUE); 1449 if (h != NULL && h->type == bfd_link_hash_defined) 1450 elf_gp (output_bfd) = (h->u.def.value 1451 + h->u.def.section->output_section->vma 1452 + h->u.def.section->output_offset); 1453 else 1454 { 1455 /* Only get the error once. */ 1456 *psb = elf_gp (output_bfd) = 4; 1457 *error_message = 1458 (const char *) _("SDA relocation when _SDA_BASE_ not defined"); 1459 return bfd_reloc_dangerous; 1460 } 1461 } 1462 *psb = elf_gp (output_bfd); 1463 return bfd_reloc_ok; 1464 } 1465 1466 /* Return size of a PLT entry. */ 1467 #define elf_m32r_sizeof_plt(info) PLT_ENTRY_SIZE 1468 1469 /* The m32r linker needs to keep track of the number of relocs that it 1470 decides to copy in check_relocs for each symbol. This is so that 1471 it can discard PC relative relocs if it doesn't need them when 1472 linking with -Bsymbolic. We store the information in a field 1473 extending the regular ELF linker hash table. */ 1474 1475 /* This structure keeps track of the number of PC relative relocs we 1476 have copied for a given symbol. */ 1477 1478 struct elf_m32r_pcrel_relocs_copied 1479 { 1480 /* Next section. */ 1481 struct elf_m32r_pcrel_relocs_copied *next; 1482 /* A section in dynobj. */ 1483 asection *section; 1484 /* Number of relocs copied in this section. */ 1485 bfd_size_type count; 1486 }; 1487 1488 /* The sh linker needs to keep track of the number of relocs that it 1489 decides to copy as dynamic relocs in check_relocs for each symbol. 1490 This is so that it can later discard them if they are found to be 1491 unnecessary. We store the information in a field extending the 1492 regular ELF linker hash table. */ 1493 1494 struct elf_m32r_dyn_relocs 1495 { 1496 struct elf_m32r_dyn_relocs *next; 1497 1498 /* The input section of the reloc. */ 1499 asection *sec; 1500 1501 /* Total number of relocs copied for the input section. */ 1502 bfd_size_type count; 1503 1504 /* Number of pc-relative relocs copied for the input section. */ 1505 bfd_size_type pc_count; 1506 }; 1507 1508 1509 /* m32r ELF linker hash entry. */ 1510 1511 struct elf_m32r_link_hash_entry 1512 { 1513 struct elf_link_hash_entry root; 1514 1515 /* Track dynamic relocs copied for this symbol. */ 1516 struct elf_m32r_dyn_relocs *dyn_relocs; 1517 }; 1518 1519 /* m32r ELF linker hash table. */ 1520 1521 struct elf_m32r_link_hash_table 1522 { 1523 struct elf_link_hash_table root; 1524 1525 /* Short-cuts to get to dynamic linker sections. */ 1526 asection *sdynbss; 1527 asection *srelbss; 1528 1529 /* Small local sym cache. */ 1530 struct sym_cache sym_cache; 1531 }; 1532 1533 /* Traverse an m32r ELF linker hash table. */ 1534 1535 #define m32r_elf_link_hash_traverse(table, func, info) \ 1536 (elf_link_hash_traverse \ 1537 (&(table)->root, \ 1538 (bfd_boolean (*) (struct elf_link_hash_entry *, void *)) (func), \ 1539 (info))) 1540 1541 /* Get the m32r ELF linker hash table from a link_info structure. */ 1542 1543 #define m32r_elf_hash_table(p) \ 1544 (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \ 1545 == M32R_ELF_DATA ? ((struct elf_m32r_link_hash_table *) ((p)->hash)) : NULL) 1546 1547 /* Create an entry in an m32r ELF linker hash table. */ 1548 1549 static struct bfd_hash_entry * 1550 m32r_elf_link_hash_newfunc (struct bfd_hash_entry *entry, 1551 struct bfd_hash_table *table, 1552 const char *string) 1553 { 1554 struct elf_m32r_link_hash_entry *ret = 1555 (struct elf_m32r_link_hash_entry *) entry; 1556 1557 /* Allocate the structure if it has not already been allocated by a 1558 subclass. */ 1559 if (ret == NULL) 1560 ret = bfd_hash_allocate (table, 1561 sizeof (struct elf_m32r_link_hash_entry)); 1562 if (ret == NULL) 1563 return NULL; 1564 1565 /* Call the allocation method of the superclass. */ 1566 ret = ((struct elf_m32r_link_hash_entry *) 1567 _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret, 1568 table, string)); 1569 if (ret != NULL) 1570 { 1571 struct elf_m32r_link_hash_entry *eh; 1572 1573 eh = (struct elf_m32r_link_hash_entry *) ret; 1574 eh->dyn_relocs = NULL; 1575 } 1576 1577 return (struct bfd_hash_entry *) ret; 1578 } 1579 1580 /* Create an m32r ELF linker hash table. */ 1581 1582 static struct bfd_link_hash_table * 1583 m32r_elf_link_hash_table_create (bfd *abfd) 1584 { 1585 struct elf_m32r_link_hash_table *ret; 1586 bfd_size_type amt = sizeof (struct elf_m32r_link_hash_table); 1587 1588 ret = bfd_zmalloc (amt); 1589 if (ret == NULL) 1590 return NULL; 1591 1592 if (!_bfd_elf_link_hash_table_init (&ret->root, abfd, 1593 m32r_elf_link_hash_newfunc, 1594 sizeof (struct elf_m32r_link_hash_entry), 1595 M32R_ELF_DATA)) 1596 { 1597 free (ret); 1598 return NULL; 1599 } 1600 1601 return &ret->root.root; 1602 } 1603 1604 /* Create dynamic sections when linking against a dynamic object. */ 1605 1606 static bfd_boolean 1607 m32r_elf_create_dynamic_sections (bfd *abfd, struct bfd_link_info *info) 1608 { 1609 struct elf_m32r_link_hash_table *htab; 1610 flagword flags, pltflags; 1611 asection *s; 1612 const struct elf_backend_data *bed = get_elf_backend_data (abfd); 1613 int ptralign = 2; /* 32bit */ 1614 1615 htab = m32r_elf_hash_table (info); 1616 if (htab == NULL) 1617 return FALSE; 1618 1619 /* We need to create .plt, .rel[a].plt, .got, .got.plt, .dynbss, and 1620 .rel[a].bss sections. */ 1621 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY 1622 | SEC_LINKER_CREATED); 1623 1624 pltflags = flags; 1625 pltflags |= SEC_CODE; 1626 if (bed->plt_not_loaded) 1627 pltflags &= ~ (SEC_LOAD | SEC_HAS_CONTENTS); 1628 if (bed->plt_readonly) 1629 pltflags |= SEC_READONLY; 1630 1631 s = bfd_make_section_anyway_with_flags (abfd, ".plt", pltflags); 1632 htab->root.splt = s; 1633 if (s == NULL 1634 || ! bfd_set_section_alignment (abfd, s, bed->plt_alignment)) 1635 return FALSE; 1636 1637 if (bed->want_plt_sym) 1638 { 1639 /* Define the symbol _PROCEDURE_LINKAGE_TABLE_ at the start of the 1640 .plt section. */ 1641 struct bfd_link_hash_entry *bh = NULL; 1642 struct elf_link_hash_entry *h; 1643 1644 if (! (_bfd_generic_link_add_one_symbol 1645 (info, abfd, "_PROCEDURE_LINKAGE_TABLE_", BSF_GLOBAL, s, 1646 (bfd_vma) 0, NULL, FALSE, 1647 get_elf_backend_data (abfd)->collect, &bh))) 1648 return FALSE; 1649 h = (struct elf_link_hash_entry *) bh; 1650 h->def_regular = 1; 1651 h->type = STT_OBJECT; 1652 htab->root.hplt = h; 1653 1654 if (bfd_link_pic (info) 1655 && ! bfd_elf_link_record_dynamic_symbol (info, h)) 1656 return FALSE; 1657 } 1658 1659 s = bfd_make_section_anyway_with_flags (abfd, 1660 bed->default_use_rela_p 1661 ? ".rela.plt" : ".rel.plt", 1662 flags | SEC_READONLY); 1663 htab->root.srelplt = s; 1664 if (s == NULL 1665 || ! bfd_set_section_alignment (abfd, s, ptralign)) 1666 return FALSE; 1667 1668 if (htab->root.sgot == NULL 1669 && !_bfd_elf_create_got_section (abfd, info)) 1670 return FALSE; 1671 1672 if (bed->want_dynbss) 1673 { 1674 /* The .dynbss section is a place to put symbols which are defined 1675 by dynamic objects, are referenced by regular objects, and are 1676 not functions. We must allocate space for them in the process 1677 image and use a R_*_COPY reloc to tell the dynamic linker to 1678 initialize them at run time. The linker script puts the .dynbss 1679 section into the .bss section of the final image. */ 1680 s = bfd_make_section_anyway_with_flags (abfd, ".dynbss", 1681 SEC_ALLOC | SEC_LINKER_CREATED); 1682 htab->sdynbss = s; 1683 if (s == NULL) 1684 return FALSE; 1685 /* The .rel[a].bss section holds copy relocs. This section is not 1686 normally needed. We need to create it here, though, so that the 1687 linker will map it to an output section. We can't just create it 1688 only if we need it, because we will not know whether we need it 1689 until we have seen all the input files, and the first time the 1690 main linker code calls BFD after examining all the input files 1691 (size_dynamic_sections) the input sections have already been 1692 mapped to the output sections. If the section turns out not to 1693 be needed, we can discard it later. We will never need this 1694 section when generating a shared object, since they do not use 1695 copy relocs. */ 1696 if (! bfd_link_pic (info)) 1697 { 1698 s = bfd_make_section_anyway_with_flags (abfd, 1699 (bed->default_use_rela_p 1700 ? ".rela.bss" : ".rel.bss"), 1701 flags | SEC_READONLY); 1702 htab->srelbss = s; 1703 if (s == NULL 1704 || ! bfd_set_section_alignment (abfd, s, ptralign)) 1705 return FALSE; 1706 } 1707 } 1708 1709 return TRUE; 1710 } 1711 1712 /* Copy the extra info we tack onto an elf_link_hash_entry. */ 1713 1714 static void 1715 m32r_elf_copy_indirect_symbol (struct bfd_link_info *info, 1716 struct elf_link_hash_entry *dir, 1717 struct elf_link_hash_entry *ind) 1718 { 1719 struct elf_m32r_link_hash_entry * edir; 1720 struct elf_m32r_link_hash_entry * eind; 1721 1722 edir = (struct elf_m32r_link_hash_entry *) dir; 1723 eind = (struct elf_m32r_link_hash_entry *) ind; 1724 1725 if (eind->dyn_relocs != NULL) 1726 { 1727 if (edir->dyn_relocs != NULL) 1728 { 1729 struct elf_m32r_dyn_relocs **pp; 1730 struct elf_m32r_dyn_relocs *p; 1731 1732 /* Add reloc counts against the indirect sym to the direct sym 1733 list. Merge any entries against the same section. */ 1734 for (pp = &eind->dyn_relocs; (p = *pp) != NULL;) 1735 { 1736 struct elf_m32r_dyn_relocs *q; 1737 1738 for (q = edir->dyn_relocs; q != NULL; q = q->next) 1739 if (q->sec == p->sec) 1740 { 1741 q->pc_count += p->pc_count; 1742 q->count += p->count; 1743 *pp = p->next; 1744 break; 1745 } 1746 if (q == NULL) 1747 pp = &p->next; 1748 } 1749 *pp = edir->dyn_relocs; 1750 } 1751 1752 edir->dyn_relocs = eind->dyn_relocs; 1753 eind->dyn_relocs = NULL; 1754 } 1755 1756 _bfd_elf_link_hash_copy_indirect (info, dir, ind); 1757 } 1758 1759 1760 /* Adjust a symbol defined by a dynamic object and referenced by a 1761 regular object. The current definition is in some section of the 1762 dynamic object, but we're not including those sections. We have to 1763 change the definition to something the rest of the link can 1764 understand. */ 1765 1766 static bfd_boolean 1767 m32r_elf_adjust_dynamic_symbol (struct bfd_link_info *info, 1768 struct elf_link_hash_entry *h) 1769 { 1770 struct elf_m32r_link_hash_table *htab; 1771 struct elf_m32r_link_hash_entry *eh; 1772 struct elf_m32r_dyn_relocs *p; 1773 bfd *dynobj; 1774 asection *s; 1775 1776 #ifdef DEBUG_PIC 1777 printf ("m32r_elf_adjust_dynamic_symbol()\n"); 1778 #endif 1779 1780 dynobj = elf_hash_table (info)->dynobj; 1781 1782 /* Make sure we know what is going on here. */ 1783 BFD_ASSERT (dynobj != NULL 1784 && (h->needs_plt 1785 || h->u.weakdef != NULL 1786 || (h->def_dynamic 1787 && h->ref_regular 1788 && !h->def_regular))); 1789 1790 /* If this is a function, put it in the procedure linkage table. We 1791 will fill in the contents of the procedure linkage table later, 1792 when we know the address of the .got section. */ 1793 if (h->type == STT_FUNC 1794 || h->needs_plt) 1795 { 1796 if (! bfd_link_pic (info) 1797 && !h->def_dynamic 1798 && !h->ref_dynamic 1799 && h->root.type != bfd_link_hash_undefweak 1800 && h->root.type != bfd_link_hash_undefined) 1801 { 1802 /* This case can occur if we saw a PLT reloc in an input 1803 file, but the symbol was never referred to by a dynamic 1804 object. In such a case, we don't actually need to build 1805 a procedure linkage table, and we can just do a PCREL 1806 reloc instead. */ 1807 h->plt.offset = (bfd_vma) -1; 1808 h->needs_plt = 0; 1809 } 1810 1811 return TRUE; 1812 } 1813 else 1814 h->plt.offset = (bfd_vma) -1; 1815 1816 /* If this is a weak symbol, and there is a real definition, the 1817 processor independent code will have arranged for us to see the 1818 real definition first, and we can just use the same value. */ 1819 if (h->u.weakdef != NULL) 1820 { 1821 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined 1822 || h->u.weakdef->root.type == bfd_link_hash_defweak); 1823 h->root.u.def.section = h->u.weakdef->root.u.def.section; 1824 h->root.u.def.value = h->u.weakdef->root.u.def.value; 1825 return TRUE; 1826 } 1827 1828 /* This is a reference to a symbol defined by a dynamic object which 1829 is not a function. */ 1830 1831 /* If we are creating a shared library, we must presume that the 1832 only references to the symbol are via the global offset table. 1833 For such cases we need not do anything here; the relocations will 1834 be handled correctly by relocate_section. */ 1835 if (bfd_link_pic (info)) 1836 return TRUE; 1837 1838 /* If there are no references to this symbol that do not use the 1839 GOT, we don't need to generate a copy reloc. */ 1840 if (!h->non_got_ref) 1841 return TRUE; 1842 1843 /* If -z nocopyreloc was given, we won't generate them either. */ 1844 if (info->nocopyreloc) 1845 { 1846 h->non_got_ref = 0; 1847 return TRUE; 1848 } 1849 1850 eh = (struct elf_m32r_link_hash_entry *) h; 1851 for (p = eh->dyn_relocs; p != NULL; p = p->next) 1852 { 1853 s = p->sec->output_section; 1854 if (s != NULL && (s->flags & (SEC_READONLY | SEC_HAS_CONTENTS)) != 0) 1855 break; 1856 } 1857 1858 /* If we didn't find any dynamic relocs in sections which needs the 1859 copy reloc, then we'll be keeping the dynamic relocs and avoiding 1860 the copy reloc. */ 1861 if (p == NULL) 1862 { 1863 h->non_got_ref = 0; 1864 return TRUE; 1865 } 1866 1867 /* We must allocate the symbol in our .dynbss section, which will 1868 become part of the .bss section of the executable. There will be 1869 an entry for this symbol in the .dynsym section. The dynamic 1870 object will contain position independent code, so all references 1871 from the dynamic object to this symbol will go through the global 1872 offset table. The dynamic linker will use the .dynsym entry to 1873 determine the address it must put in the global offset table, so 1874 both the dynamic object and the regular object will refer to the 1875 same memory location for the variable. */ 1876 1877 htab = m32r_elf_hash_table (info); 1878 if (htab == NULL) 1879 return FALSE; 1880 1881 s = htab->sdynbss; 1882 BFD_ASSERT (s != NULL); 1883 1884 /* We must generate a R_M32R_COPY reloc to tell the dynamic linker 1885 to copy the initial value out of the dynamic object and into the 1886 runtime process image. We need to remember the offset into the 1887 .rela.bss section we are going to use. */ 1888 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0) 1889 { 1890 asection *srel; 1891 1892 srel = htab->srelbss; 1893 BFD_ASSERT (srel != NULL); 1894 srel->size += sizeof (Elf32_External_Rela); 1895 h->needs_copy = 1; 1896 } 1897 1898 return _bfd_elf_adjust_dynamic_copy (info, h, s); 1899 } 1900 1901 /* Allocate space in .plt, .got and associated reloc sections for 1902 dynamic relocs. */ 1903 1904 static bfd_boolean 1905 allocate_dynrelocs (struct elf_link_hash_entry *h, void * inf) 1906 { 1907 struct bfd_link_info *info; 1908 struct elf_m32r_link_hash_table *htab; 1909 struct elf_m32r_link_hash_entry *eh; 1910 struct elf_m32r_dyn_relocs *p; 1911 1912 if (h->root.type == bfd_link_hash_indirect) 1913 return TRUE; 1914 1915 info = (struct bfd_link_info *) inf; 1916 htab = m32r_elf_hash_table (info); 1917 if (htab == NULL) 1918 return FALSE; 1919 1920 eh = (struct elf_m32r_link_hash_entry *) h; 1921 1922 if (htab->root.dynamic_sections_created 1923 && h->plt.refcount > 0) 1924 { 1925 /* Make sure this symbol is output as a dynamic symbol. 1926 Undefined weak syms won't yet be marked as dynamic. */ 1927 if (h->dynindx == -1 1928 && !h->forced_local) 1929 { 1930 if (! bfd_elf_link_record_dynamic_symbol (info, h)) 1931 return FALSE; 1932 } 1933 1934 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, bfd_link_pic (info), h)) 1935 { 1936 asection *s = htab->root.splt; 1937 1938 /* If this is the first .plt entry, make room for the special 1939 first entry. */ 1940 if (s->size == 0) 1941 s->size += PLT_ENTRY_SIZE; 1942 1943 h->plt.offset = s->size; 1944 1945 /* If this symbol is not defined in a regular file, and we are 1946 not generating a shared library, then set the symbol to this 1947 location in the .plt. This is required to make function 1948 pointers compare as equal between the normal executable and 1949 the shared library. */ 1950 if (! bfd_link_pic (info) 1951 && !h->def_regular) 1952 { 1953 h->root.u.def.section = s; 1954 h->root.u.def.value = h->plt.offset; 1955 } 1956 1957 /* Make room for this entry. */ 1958 s->size += PLT_ENTRY_SIZE; 1959 1960 /* We also need to make an entry in the .got.plt section, which 1961 will be placed in the .got section by the linker script. */ 1962 htab->root.sgotplt->size += 4; 1963 1964 /* We also need to make an entry in the .rel.plt section. */ 1965 htab->root.srelplt->size += sizeof (Elf32_External_Rela); 1966 } 1967 else 1968 { 1969 h->plt.offset = (bfd_vma) -1; 1970 h->needs_plt = 0; 1971 } 1972 } 1973 else 1974 { 1975 h->plt.offset = (bfd_vma) -1; 1976 h->needs_plt = 0; 1977 } 1978 1979 if (h->got.refcount > 0) 1980 { 1981 asection *s; 1982 bfd_boolean dyn; 1983 1984 /* Make sure this symbol is output as a dynamic symbol. 1985 Undefined weak syms won't yet be marked as dynamic. */ 1986 if (h->dynindx == -1 1987 && !h->forced_local) 1988 { 1989 if (! bfd_elf_link_record_dynamic_symbol (info, h)) 1990 return FALSE; 1991 } 1992 1993 s = htab->root.sgot; 1994 1995 h->got.offset = s->size; 1996 s->size += 4; 1997 dyn = htab->root.dynamic_sections_created; 1998 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, bfd_link_pic (info), h)) 1999 htab->root.srelgot->size += sizeof (Elf32_External_Rela); 2000 } 2001 else 2002 h->got.offset = (bfd_vma) -1; 2003 2004 if (eh->dyn_relocs == NULL) 2005 return TRUE; 2006 2007 /* In the shared -Bsymbolic case, discard space allocated for 2008 dynamic pc-relative relocs against symbols which turn out to be 2009 defined in regular objects. For the normal shared case, discard 2010 space for pc-relative relocs that have become local due to symbol 2011 visibility changes. */ 2012 2013 if (bfd_link_pic (info)) 2014 { 2015 if (h->def_regular 2016 && (h->forced_local 2017 || info->symbolic)) 2018 { 2019 struct elf_m32r_dyn_relocs **pp; 2020 2021 for (pp = &eh->dyn_relocs; (p = *pp) != NULL;) 2022 { 2023 p->count -= p->pc_count; 2024 p->pc_count = 0; 2025 if (p->count == 0) 2026 *pp = p->next; 2027 else 2028 pp = &p->next; 2029 } 2030 } 2031 2032 /* Also discard relocs on undefined weak syms with non-default 2033 visibility. */ 2034 if (eh->dyn_relocs != NULL 2035 && h->root.type == bfd_link_hash_undefweak) 2036 { 2037 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT) 2038 eh->dyn_relocs = NULL; 2039 2040 /* Make sure undefined weak symbols are output as a dynamic 2041 symbol in PIEs. */ 2042 else if (h->dynindx == -1 2043 && !h->forced_local) 2044 { 2045 if (! bfd_elf_link_record_dynamic_symbol (info, h)) 2046 return FALSE; 2047 } 2048 } 2049 } 2050 else 2051 { 2052 /* For the non-shared case, discard space for relocs against 2053 symbols which turn out to need copy relocs or are not 2054 dynamic. */ 2055 2056 if (!h->non_got_ref 2057 && ((h->def_dynamic 2058 && !h->def_regular) 2059 || (htab->root.dynamic_sections_created 2060 && (h->root.type == bfd_link_hash_undefweak 2061 || h->root.type == bfd_link_hash_undefined)))) 2062 { 2063 /* Make sure this symbol is output as a dynamic symbol. 2064 Undefined weak syms won't yet be marked as dynamic. */ 2065 if (h->dynindx == -1 2066 && !h->forced_local) 2067 { 2068 if (! bfd_elf_link_record_dynamic_symbol (info, h)) 2069 return FALSE; 2070 } 2071 2072 /* If that succeeded, we know we'll be keeping all the 2073 relocs. */ 2074 if (h->dynindx != -1) 2075 goto keep; 2076 } 2077 2078 eh->dyn_relocs = NULL; 2079 2080 keep: ; 2081 } 2082 2083 /* Finally, allocate space. */ 2084 for (p = eh->dyn_relocs; p != NULL; p = p->next) 2085 { 2086 asection *sreloc = elf_section_data (p->sec)->sreloc; 2087 sreloc->size += p->count * sizeof (Elf32_External_Rela); 2088 } 2089 2090 return TRUE; 2091 } 2092 2093 /* Find any dynamic relocs that apply to read-only sections. */ 2094 2095 static bfd_boolean 2096 readonly_dynrelocs (struct elf_link_hash_entry *h, void * inf) 2097 { 2098 struct elf_m32r_link_hash_entry *eh; 2099 struct elf_m32r_dyn_relocs *p; 2100 2101 eh = (struct elf_m32r_link_hash_entry *) h; 2102 for (p = eh->dyn_relocs; p != NULL; p = p->next) 2103 { 2104 asection *s = p->sec->output_section; 2105 2106 if (s != NULL && (s->flags & SEC_READONLY) != 0) 2107 { 2108 struct bfd_link_info *info = (struct bfd_link_info *) inf; 2109 2110 info->flags |= DF_TEXTREL; 2111 2112 /* Not an error, just cut short the traversal. */ 2113 return FALSE; 2114 } 2115 } 2116 return TRUE; 2117 } 2118 2119 /* Set the sizes of the dynamic sections. */ 2120 2121 static bfd_boolean 2122 m32r_elf_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED, 2123 struct bfd_link_info *info) 2124 { 2125 struct elf_m32r_link_hash_table *htab; 2126 bfd *dynobj; 2127 asection *s; 2128 bfd_boolean relocs; 2129 bfd *ibfd; 2130 2131 #ifdef DEBUG_PIC 2132 printf ("m32r_elf_size_dynamic_sections()\n"); 2133 #endif 2134 2135 htab = m32r_elf_hash_table (info); 2136 if (htab == NULL) 2137 return FALSE; 2138 2139 dynobj = htab->root.dynobj; 2140 BFD_ASSERT (dynobj != NULL); 2141 2142 if (htab->root.dynamic_sections_created) 2143 { 2144 /* Set the contents of the .interp section to the interpreter. */ 2145 if (bfd_link_executable (info) && !info->nointerp) 2146 { 2147 s = bfd_get_linker_section (dynobj, ".interp"); 2148 BFD_ASSERT (s != NULL); 2149 s->size = sizeof ELF_DYNAMIC_INTERPRETER; 2150 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER; 2151 } 2152 } 2153 2154 /* Set up .got offsets for local syms, and space for local dynamic 2155 relocs. */ 2156 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) 2157 { 2158 bfd_signed_vma *local_got; 2159 bfd_signed_vma *end_local_got; 2160 bfd_size_type locsymcount; 2161 Elf_Internal_Shdr *symtab_hdr; 2162 asection *srel; 2163 2164 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour) 2165 continue; 2166 2167 for (s = ibfd->sections; s != NULL; s = s->next) 2168 { 2169 struct elf_m32r_dyn_relocs *p; 2170 2171 for (p = ((struct elf_m32r_dyn_relocs *) 2172 elf_section_data (s)->local_dynrel); 2173 p != NULL; 2174 p = p->next) 2175 { 2176 if (! bfd_is_abs_section (p->sec) 2177 && bfd_is_abs_section (p->sec->output_section)) 2178 { 2179 /* Input section has been discarded, either because 2180 it is a copy of a linkonce section or due to 2181 linker script /DISCARD/, so we'll be discarding 2182 the relocs too. */ 2183 } 2184 else if (p->count != 0) 2185 { 2186 srel = elf_section_data (p->sec)->sreloc; 2187 srel->size += p->count * sizeof (Elf32_External_Rela); 2188 if ((p->sec->output_section->flags & SEC_READONLY) != 0) 2189 info->flags |= DF_TEXTREL; 2190 } 2191 } 2192 } 2193 2194 local_got = elf_local_got_refcounts (ibfd); 2195 if (!local_got) 2196 continue; 2197 2198 symtab_hdr = &elf_tdata (ibfd)->symtab_hdr; 2199 locsymcount = symtab_hdr->sh_info; 2200 end_local_got = local_got + locsymcount; 2201 s = htab->root.sgot; 2202 srel = htab->root.srelgot; 2203 for (; local_got < end_local_got; ++local_got) 2204 { 2205 if (*local_got > 0) 2206 { 2207 *local_got = s->size; 2208 s->size += 4; 2209 if (bfd_link_pic (info)) 2210 srel->size += sizeof (Elf32_External_Rela); 2211 } 2212 else 2213 *local_got = (bfd_vma) -1; 2214 } 2215 } 2216 2217 /* Allocate global sym .plt and .got entries, and space for global 2218 sym dynamic relocs. */ 2219 elf_link_hash_traverse (&htab->root, allocate_dynrelocs, info); 2220 2221 /* We now have determined the sizes of the various dynamic sections. 2222 Allocate memory for them. */ 2223 relocs = FALSE; 2224 for (s = dynobj->sections; s != NULL; s = s->next) 2225 { 2226 if ((s->flags & SEC_LINKER_CREATED) == 0) 2227 continue; 2228 2229 if (s == htab->root.splt 2230 || s == htab->root.sgot 2231 || s == htab->root.sgotplt 2232 || s == htab->sdynbss) 2233 { 2234 /* Strip this section if we don't need it; see the 2235 comment below. */ 2236 } 2237 else if (CONST_STRNEQ (bfd_get_section_name (dynobj, s), ".rela")) 2238 { 2239 if (s->size != 0 && s != htab->root.srelplt) 2240 relocs = TRUE; 2241 2242 /* We use the reloc_count field as a counter if we need 2243 to copy relocs into the output file. */ 2244 s->reloc_count = 0; 2245 } 2246 else 2247 /* It's not one of our sections, so don't allocate space. */ 2248 continue; 2249 2250 if (s->size == 0) 2251 { 2252 /* If we don't need this section, strip it from the 2253 output file. This is mostly to handle .rela.bss and 2254 .rela.plt. We must create both sections in 2255 create_dynamic_sections, because they must be created 2256 before the linker maps input sections to output 2257 sections. The linker does that before 2258 adjust_dynamic_symbol is called, and it is that 2259 function which decides whether anything needs to go 2260 into these sections. */ 2261 s->flags |= SEC_EXCLUDE; 2262 continue; 2263 } 2264 2265 if ((s->flags & SEC_HAS_CONTENTS) == 0) 2266 continue; 2267 2268 /* Allocate memory for the section contents. We use bfd_zalloc 2269 here in case unused entries are not reclaimed before the 2270 section's contents are written out. This should not happen, 2271 but this way if it does, we get a R_M32R_NONE reloc instead 2272 of garbage. */ 2273 s->contents = bfd_zalloc (dynobj, s->size); 2274 if (s->contents == NULL) 2275 return FALSE; 2276 } 2277 2278 if (htab->root.dynamic_sections_created) 2279 { 2280 /* Add some entries to the .dynamic section. We fill in the 2281 values later, in m32r_elf_finish_dynamic_sections, but we 2282 must add the entries now so that we get the correct size for 2283 the .dynamic section. The DT_DEBUG entry is filled in by the 2284 dynamic linker and used by the debugger. */ 2285 #define add_dynamic_entry(TAG, VAL) \ 2286 _bfd_elf_add_dynamic_entry (info, TAG, VAL) 2287 2288 if (bfd_link_executable (info)) 2289 { 2290 if (! add_dynamic_entry (DT_DEBUG, 0)) 2291 return FALSE; 2292 } 2293 2294 if (htab->root.splt->size != 0) 2295 { 2296 if (! add_dynamic_entry (DT_PLTGOT, 0) 2297 || ! add_dynamic_entry (DT_PLTRELSZ, 0) 2298 || ! add_dynamic_entry (DT_PLTREL, DT_RELA) 2299 || ! add_dynamic_entry (DT_JMPREL, 0)) 2300 return FALSE; 2301 } 2302 2303 if (relocs) 2304 { 2305 if (! add_dynamic_entry (DT_RELA, 0) 2306 || ! add_dynamic_entry (DT_RELASZ, 0) 2307 || ! add_dynamic_entry (DT_RELAENT, 2308 sizeof (Elf32_External_Rela))) 2309 return FALSE; 2310 2311 /* If any dynamic relocs apply to a read-only section, 2312 then we need a DT_TEXTREL entry. */ 2313 if ((info->flags & DF_TEXTREL) == 0) 2314 elf_link_hash_traverse (&htab->root, readonly_dynrelocs, 2315 info); 2316 2317 if ((info->flags & DF_TEXTREL) != 0) 2318 { 2319 if (! add_dynamic_entry (DT_TEXTREL, 0)) 2320 return FALSE; 2321 } 2322 } 2323 } 2324 #undef add_dynamic_entry 2325 2326 return TRUE; 2327 } 2328 2329 /* Relocate an M32R/D ELF section. 2330 There is some attempt to make this function usable for many architectures, 2331 both for RELA and REL type relocs, if only to serve as a learning tool. 2332 2333 The RELOCATE_SECTION function is called by the new ELF backend linker 2334 to handle the relocations for a section. 2335 2336 The relocs are always passed as Rela structures; if the section 2337 actually uses Rel structures, the r_addend field will always be 2338 zero. 2339 2340 This function is responsible for adjust the section contents as 2341 necessary, and (if using Rela relocs and generating a 2342 relocatable output file) adjusting the reloc addend as 2343 necessary. 2344 2345 This function does not have to worry about setting the reloc 2346 address or the reloc symbol index. 2347 2348 LOCAL_SYMS is a pointer to the swapped in local symbols. 2349 2350 LOCAL_SECTIONS is an array giving the section in the input file 2351 corresponding to the st_shndx field of each local symbol. 2352 2353 The global hash table entry for the global symbols can be found 2354 via elf_sym_hashes (input_bfd). 2355 2356 When generating relocatable output, this function must handle 2357 STB_LOCAL/STT_SECTION symbols specially. The output symbol is 2358 going to be the section symbol corresponding to the output 2359 section, which means that the addend must be adjusted 2360 accordingly. */ 2361 2362 static bfd_boolean 2363 m32r_elf_relocate_section (bfd *output_bfd ATTRIBUTE_UNUSED, 2364 struct bfd_link_info *info, 2365 bfd *input_bfd, 2366 asection *input_section, 2367 bfd_byte *contents, 2368 Elf_Internal_Rela *relocs, 2369 Elf_Internal_Sym *local_syms, 2370 asection **local_sections) 2371 { 2372 Elf_Internal_Shdr *symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; 2373 struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (input_bfd); 2374 Elf_Internal_Rela *rel, *relend; 2375 /* Assume success. */ 2376 bfd_boolean ret = TRUE; 2377 struct elf_m32r_link_hash_table *htab = m32r_elf_hash_table (info); 2378 bfd_vma *local_got_offsets; 2379 asection *sgot, *splt, *sreloc; 2380 bfd_vma high_address = bfd_get_section_limit (input_bfd, input_section); 2381 2382 if (htab == NULL) 2383 return FALSE; 2384 2385 local_got_offsets = elf_local_got_offsets (input_bfd); 2386 2387 sgot = htab->root.sgot; 2388 splt = htab->root.splt; 2389 sreloc = NULL; 2390 2391 rel = relocs; 2392 relend = relocs + input_section->reloc_count; 2393 for (; rel < relend; rel++) 2394 { 2395 int r_type; 2396 reloc_howto_type *howto; 2397 unsigned long r_symndx; 2398 struct elf_link_hash_entry *h; 2399 /* We can't modify r_addend here as elf_link_input_bfd has an assert to 2400 ensure it's zero (we use REL relocs, not RELA). Therefore this 2401 should be assigning zero to `addend', but for clarity we use 2402 `r_addend'. */ 2403 bfd_vma addend = rel->r_addend; 2404 bfd_vma offset = rel->r_offset; 2405 bfd_vma relocation; 2406 Elf_Internal_Sym *sym; 2407 asection *sec; 2408 const char *sym_name; 2409 bfd_reloc_status_type r; 2410 const char *errmsg = NULL; 2411 bfd_boolean use_rel = FALSE; 2412 2413 h = NULL; 2414 r_type = ELF32_R_TYPE (rel->r_info); 2415 if (r_type < 0 || r_type >= (int) R_M32R_max) 2416 { 2417 /* xgettext:c-format */ 2418 _bfd_error_handler (_("%B: unknown relocation type %d"), 2419 input_bfd, (int) r_type); 2420 bfd_set_error (bfd_error_bad_value); 2421 ret = FALSE; 2422 continue; 2423 } 2424 2425 if ( r_type == R_M32R_GNU_VTENTRY 2426 || r_type == R_M32R_GNU_VTINHERIT 2427 || r_type == R_M32R_NONE 2428 || r_type == R_M32R_RELA_GNU_VTENTRY 2429 || r_type == R_M32R_RELA_GNU_VTINHERIT) 2430 continue; 2431 2432 if (r_type <= R_M32R_GNU_VTENTRY) 2433 use_rel = TRUE; 2434 2435 howto = m32r_elf_howto_table + r_type; 2436 r_symndx = ELF32_R_SYM (rel->r_info); 2437 2438 sym = NULL; 2439 sec = NULL; 2440 h = NULL; 2441 2442 if (r_symndx < symtab_hdr->sh_info) 2443 { 2444 /* Local symbol. */ 2445 sym = local_syms + r_symndx; 2446 sec = local_sections[r_symndx]; 2447 sym_name = "<local symbol>"; 2448 2449 if (!use_rel) 2450 { 2451 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel); 2452 addend = rel->r_addend; 2453 } 2454 else 2455 { 2456 relocation = (sec->output_section->vma 2457 + sec->output_offset 2458 + sym->st_value); 2459 } 2460 } 2461 else 2462 { 2463 /* External symbol. */ 2464 relocation = 0; 2465 2466 h = sym_hashes[r_symndx - symtab_hdr->sh_info]; 2467 2468 if (info->wrap_hash != NULL 2469 && (input_section->flags & SEC_DEBUGGING) != 0) 2470 h = ((struct elf_link_hash_entry *) 2471 unwrap_hash_lookup (info, input_bfd, &h->root)); 2472 2473 while (h->root.type == bfd_link_hash_indirect 2474 || h->root.type == bfd_link_hash_warning) 2475 h = (struct elf_link_hash_entry *) h->root.u.i.link; 2476 sym_name = h->root.root.string; 2477 2478 if (h->root.type == bfd_link_hash_defined 2479 || h->root.type == bfd_link_hash_defweak) 2480 { 2481 bfd_boolean dyn; 2482 sec = h->root.u.def.section; 2483 2484 dyn = htab->root.dynamic_sections_created; 2485 sec = h->root.u.def.section; 2486 if (r_type == R_M32R_GOTPC24 2487 || (r_type == R_M32R_GOTPC_HI_ULO 2488 || r_type == R_M32R_GOTPC_HI_SLO 2489 || r_type == R_M32R_GOTPC_LO) 2490 || (r_type == R_M32R_26_PLTREL 2491 && h->plt.offset != (bfd_vma) -1) 2492 || ((r_type == R_M32R_GOT24 2493 || r_type == R_M32R_GOT16_HI_ULO 2494 || r_type == R_M32R_GOT16_HI_SLO 2495 || r_type == R_M32R_GOT16_LO) 2496 && WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 2497 bfd_link_pic (info), 2498 h) 2499 && (! bfd_link_pic (info) 2500 || (! info->symbolic && h->dynindx != -1) 2501 || !h->def_regular)) 2502 || (bfd_link_pic (info) 2503 && ((! info->symbolic && h->dynindx != -1) 2504 || !h->def_regular) 2505 && (((r_type == R_M32R_16_RELA 2506 || r_type == R_M32R_32_RELA 2507 || r_type == R_M32R_24_RELA 2508 || r_type == R_M32R_HI16_ULO_RELA 2509 || r_type == R_M32R_HI16_SLO_RELA 2510 || r_type == R_M32R_LO16_RELA) 2511 && !h->forced_local) 2512 || r_type == R_M32R_REL32 2513 || r_type == R_M32R_10_PCREL_RELA 2514 || r_type == R_M32R_18_PCREL_RELA 2515 || r_type == R_M32R_26_PCREL_RELA) 2516 && ((input_section->flags & SEC_ALLOC) != 0 2517 /* DWARF will emit R_M32R_16(24,32) relocations 2518 in its sections against symbols defined 2519 externally in shared libraries. We can't do 2520 anything with them here. */ 2521 || ((input_section->flags & SEC_DEBUGGING) != 0 2522 && h->def_dynamic)))) 2523 { 2524 /* In these cases, we don't need the relocation 2525 value. We check specially because in some 2526 obscure cases sec->output_section will be NULL. */ 2527 } 2528 else if (sec->output_section != NULL) 2529 relocation = (h->root.u.def.value 2530 + sec->output_section->vma 2531 + sec->output_offset); 2532 else if (!bfd_link_relocatable (info) 2533 && (_bfd_elf_section_offset (output_bfd, info, 2534 input_section, 2535 rel->r_offset) 2536 != (bfd_vma) -1)) 2537 { 2538 _bfd_error_handler 2539 /* xgettext:c-format */ 2540 (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"), 2541 input_bfd, 2542 input_section, 2543 (long) rel->r_offset, 2544 howto->name, 2545 h->root.root.string); 2546 } 2547 } 2548 else if (h->root.type == bfd_link_hash_undefweak) 2549 ; 2550 else if (info->unresolved_syms_in_objects == RM_IGNORE 2551 && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT) 2552 ; 2553 else if (!bfd_link_relocatable (info)) 2554 (*info->callbacks->undefined_symbol) 2555 (info, h->root.root.string, input_bfd, 2556 input_section, offset, 2557 (info->unresolved_syms_in_objects == RM_GENERATE_ERROR 2558 || ELF_ST_VISIBILITY (h->other))); 2559 } 2560 2561 if (sec != NULL && discarded_section (sec)) 2562 RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section, 2563 rel, 1, relend, howto, 0, contents); 2564 2565 if (bfd_link_relocatable (info) && !use_rel) 2566 { 2567 /* This is a relocatable link. We don't have to change 2568 anything, unless the reloc is against a section symbol, 2569 in which case we have to adjust according to where the 2570 section symbol winds up in the output section. */ 2571 if (sym != NULL && ELF_ST_TYPE (sym->st_info) == STT_SECTION) 2572 rel->r_addend += sec->output_offset; 2573 continue; 2574 } 2575 2576 if (bfd_link_relocatable (info) && use_rel) 2577 { 2578 /* This is a relocatable link. We don't have to change 2579 anything, unless the reloc is against a section symbol, 2580 in which case we have to adjust according to where the 2581 section symbol winds up in the output section. */ 2582 if (sym == NULL || ELF_ST_TYPE (sym->st_info) != STT_SECTION) 2583 continue; 2584 2585 addend += sec->output_offset; 2586 2587 /* If partial_inplace, we need to store any additional addend 2588 back in the section. */ 2589 if (! howto->partial_inplace) 2590 continue; 2591 /* ??? Here is a nice place to call a special_function 2592 like handler. */ 2593 if (r_type != R_M32R_HI16_SLO && r_type != R_M32R_HI16_ULO) 2594 r = _bfd_relocate_contents (howto, input_bfd, 2595 addend, contents + offset); 2596 else 2597 { 2598 Elf_Internal_Rela *lorel; 2599 2600 /* We allow an arbitrary number of HI16 relocs before the 2601 LO16 reloc. This permits gcc to emit the HI and LO relocs 2602 itself. */ 2603 for (lorel = rel + 1; 2604 (lorel < relend 2605 && (ELF32_R_TYPE (lorel->r_info) == R_M32R_HI16_SLO 2606 || ELF32_R_TYPE (lorel->r_info) == R_M32R_HI16_ULO)); 2607 lorel++) 2608 continue; 2609 if (lorel < relend 2610 && ELF32_R_TYPE (lorel->r_info) == R_M32R_LO16) 2611 { 2612 m32r_elf_relocate_hi16 (input_bfd, r_type, rel, lorel, 2613 contents, addend); 2614 r = bfd_reloc_ok; 2615 } 2616 else 2617 r = _bfd_relocate_contents (howto, input_bfd, 2618 addend, contents + offset); 2619 } 2620 } 2621 else 2622 { 2623 /* Sanity check the address. */ 2624 if (offset > high_address) 2625 { 2626 r = bfd_reloc_outofrange; 2627 goto check_reloc; 2628 } 2629 2630 switch ((int) r_type) 2631 { 2632 case R_M32R_GOTOFF: 2633 /* Relocation is relative to the start of the global offset 2634 table (for ld24 rx, #uimm24). eg access at label+addend 2635 2636 ld24 rx. #label@GOTOFF + addend 2637 sub rx, r12. */ 2638 2639 BFD_ASSERT (sgot != NULL); 2640 2641 relocation = -(relocation - sgot->output_section->vma); 2642 rel->r_addend = -rel->r_addend; 2643 break; 2644 2645 case R_M32R_GOTOFF_HI_ULO: 2646 case R_M32R_GOTOFF_HI_SLO: 2647 case R_M32R_GOTOFF_LO: 2648 BFD_ASSERT (sgot != NULL); 2649 2650 relocation -= sgot->output_section->vma; 2651 2652 if ((r_type == R_M32R_GOTOFF_HI_SLO) 2653 && ((relocation + rel->r_addend) & 0x8000)) 2654 rel->r_addend += 0x10000; 2655 break; 2656 2657 case R_M32R_GOTPC24: 2658 /* .got(_GLOBAL_OFFSET_TABLE_) - pc relocation 2659 ld24 rx,#_GLOBAL_OFFSET_TABLE_ 2660 */ 2661 relocation = sgot->output_section->vma; 2662 break; 2663 2664 case R_M32R_GOTPC_HI_ULO: 2665 case R_M32R_GOTPC_HI_SLO: 2666 case R_M32R_GOTPC_LO: 2667 { 2668 /* .got(_GLOBAL_OFFSET_TABLE_) - pc relocation 2669 bl .+4 2670 seth rx,#high(_GLOBAL_OFFSET_TABLE_) 2671 or3 rx,rx,#low(_GLOBAL_OFFSET_TABLE_ +4) 2672 or 2673 bl .+4 2674 seth rx,#shigh(_GLOBAL_OFFSET_TABLE_) 2675 add3 rx,rx,#low(_GLOBAL_OFFSET_TABLE_ +4) 2676 */ 2677 relocation = sgot->output_section->vma; 2678 relocation -= (input_section->output_section->vma 2679 + input_section->output_offset 2680 + rel->r_offset); 2681 if ((r_type == R_M32R_GOTPC_HI_SLO) 2682 && ((relocation + rel->r_addend) & 0x8000)) 2683 rel->r_addend += 0x10000; 2684 2685 break; 2686 } 2687 case R_M32R_GOT16_HI_ULO: 2688 case R_M32R_GOT16_HI_SLO: 2689 case R_M32R_GOT16_LO: 2690 /* Fall through. */ 2691 case R_M32R_GOT24: 2692 /* Relocation is to the entry for this symbol in the global 2693 offset table. */ 2694 BFD_ASSERT (sgot != NULL); 2695 2696 if (h != NULL) 2697 { 2698 bfd_boolean dyn; 2699 bfd_vma off; 2700 2701 off = h->got.offset; 2702 BFD_ASSERT (off != (bfd_vma) -1); 2703 2704 dyn = htab->root.dynamic_sections_created; 2705 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 2706 bfd_link_pic (info), 2707 h) 2708 || (bfd_link_pic (info) 2709 && (info->symbolic 2710 || h->dynindx == -1 2711 || h->forced_local) 2712 && h->def_regular)) 2713 { 2714 /* This is actually a static link, or it is a 2715 -Bsymbolic link and the symbol is defined 2716 locally, or the symbol was forced to be local 2717 because of a version file. We must initialize 2718 this entry in the global offset table. Since the 2719 offset must always be a multiple of 4, we use the 2720 least significant bit to record whether we have 2721 initialized it already. 2722 2723 When doing a dynamic link, we create a .rela.got 2724 relocation entry to initialize the value. This 2725 is done in the finish_dynamic_symbol routine. */ 2726 if ((off & 1) != 0) 2727 off &= ~1; 2728 else 2729 { 2730 bfd_put_32 (output_bfd, relocation, 2731 sgot->contents + off); 2732 h->got.offset |= 1; 2733 } 2734 } 2735 2736 relocation = sgot->output_offset + off; 2737 } 2738 else 2739 { 2740 bfd_vma off; 2741 bfd_byte *loc; 2742 2743 BFD_ASSERT (local_got_offsets != NULL 2744 && local_got_offsets[r_symndx] != (bfd_vma) -1); 2745 2746 off = local_got_offsets[r_symndx]; 2747 2748 /* The offset must always be a multiple of 4. We use 2749 the least significant bit to record whether we have 2750 already processed this entry. */ 2751 if ((off & 1) != 0) 2752 off &= ~1; 2753 else 2754 { 2755 bfd_put_32 (output_bfd, relocation, sgot->contents + off); 2756 2757 if (bfd_link_pic (info)) 2758 { 2759 asection *srelgot; 2760 Elf_Internal_Rela outrel; 2761 2762 /* We need to generate a R_M32R_RELATIVE reloc 2763 for the dynamic linker. */ 2764 srelgot = htab->root.srelgot; 2765 BFD_ASSERT (srelgot != NULL); 2766 2767 outrel.r_offset = (sgot->output_section->vma 2768 + sgot->output_offset 2769 + off); 2770 outrel.r_info = ELF32_R_INFO (0, R_M32R_RELATIVE); 2771 outrel.r_addend = relocation; 2772 loc = srelgot->contents; 2773 loc += srelgot->reloc_count * sizeof (Elf32_External_Rela); 2774 bfd_elf32_swap_reloca_out (output_bfd, &outrel,loc); 2775 ++srelgot->reloc_count; 2776 } 2777 2778 local_got_offsets[r_symndx] |= 1; 2779 } 2780 2781 relocation = sgot->output_offset + off; 2782 } 2783 if ((r_type == R_M32R_GOT16_HI_SLO) 2784 && ((relocation + rel->r_addend) & 0x8000)) 2785 rel->r_addend += 0x10000; 2786 2787 break; 2788 2789 case R_M32R_26_PLTREL: 2790 /* Relocation is to the entry for this symbol in the 2791 procedure linkage table. */ 2792 2793 /* The native assembler will generate a 26_PLTREL reloc 2794 for a local symbol if you assemble a call from one 2795 section to another when using -K pic. */ 2796 if (h == NULL) 2797 break; 2798 2799 if (h->forced_local) 2800 break; 2801 2802 if (h->plt.offset == (bfd_vma) -1) 2803 /* We didn't make a PLT entry for this symbol. This 2804 happens when statically linking PIC code, or when 2805 using -Bsymbolic. */ 2806 break; 2807 2808 relocation = (splt->output_section->vma 2809 + splt->output_offset 2810 + h->plt.offset); 2811 break; 2812 2813 case R_M32R_HI16_SLO_RELA: 2814 if ((relocation + rel->r_addend) & 0x8000) 2815 rel->r_addend += 0x10000; 2816 /* Fall through. */ 2817 2818 case R_M32R_16_RELA: 2819 case R_M32R_24_RELA: 2820 case R_M32R_32_RELA: 2821 case R_M32R_REL32: 2822 case R_M32R_10_PCREL_RELA: 2823 case R_M32R_18_PCREL_RELA: 2824 case R_M32R_26_PCREL_RELA: 2825 case R_M32R_HI16_ULO_RELA: 2826 case R_M32R_LO16_RELA: 2827 if (bfd_link_pic (info) 2828 && r_symndx != STN_UNDEF 2829 && (input_section->flags & SEC_ALLOC) != 0 2830 && (( r_type != R_M32R_10_PCREL_RELA 2831 && r_type != R_M32R_18_PCREL_RELA 2832 && r_type != R_M32R_26_PCREL_RELA 2833 && r_type != R_M32R_REL32) 2834 || (h != NULL 2835 && h->dynindx != -1 2836 && (! info->symbolic 2837 || !h->def_regular)))) 2838 { 2839 Elf_Internal_Rela outrel; 2840 bfd_boolean skip, relocate; 2841 bfd_byte *loc; 2842 2843 /* When generating a shared object, these relocations 2844 are copied into the output file to be resolved at run 2845 time. */ 2846 if (sreloc == NULL) 2847 { 2848 sreloc = _bfd_elf_get_dynamic_reloc_section 2849 (input_bfd, input_section, /*rela?*/ TRUE); 2850 if (sreloc == NULL) 2851 return FALSE; 2852 } 2853 2854 skip = FALSE; 2855 relocate = FALSE; 2856 2857 outrel.r_offset = _bfd_elf_section_offset (output_bfd, 2858 info, 2859 input_section, 2860 rel->r_offset); 2861 if (outrel.r_offset == (bfd_vma) -1) 2862 skip = TRUE; 2863 else if (outrel.r_offset == (bfd_vma) -2) 2864 skip = relocate = TRUE; 2865 outrel.r_offset += (input_section->output_section->vma 2866 + input_section->output_offset); 2867 2868 if (skip) 2869 memset (&outrel, 0, sizeof outrel); 2870 else if ( r_type == R_M32R_10_PCREL_RELA 2871 || r_type == R_M32R_18_PCREL_RELA 2872 || r_type == R_M32R_26_PCREL_RELA 2873 || r_type == R_M32R_REL32) 2874 { 2875 BFD_ASSERT (h != NULL && h->dynindx != -1); 2876 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type); 2877 outrel.r_addend = rel->r_addend; 2878 } 2879 else 2880 { 2881 /* h->dynindx may be -1 if this symbol was marked to 2882 become local. */ 2883 if (h == NULL 2884 || ((info->symbolic || h->dynindx == -1) 2885 && h->def_regular)) 2886 { 2887 relocate = TRUE; 2888 outrel.r_info = ELF32_R_INFO (0, R_M32R_RELATIVE); 2889 outrel.r_addend = relocation + rel->r_addend; 2890 } 2891 else 2892 { 2893 BFD_ASSERT (h->dynindx != -1); 2894 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type); 2895 outrel.r_addend = relocation + rel->r_addend; 2896 } 2897 } 2898 2899 loc = sreloc->contents; 2900 loc += sreloc->reloc_count * sizeof (Elf32_External_Rela); 2901 bfd_elf32_swap_reloca_out (output_bfd, &outrel,loc); 2902 ++sreloc->reloc_count; 2903 2904 /* If this reloc is against an external symbol, we do 2905 not want to fiddle with the addend. Otherwise, we 2906 need to include the symbol value so that it becomes 2907 an addend for the dynamic reloc. */ 2908 if (! relocate) 2909 continue; 2910 break; 2911 } 2912 else if (r_type != R_M32R_10_PCREL_RELA) 2913 break; 2914 /* Fall through. */ 2915 2916 case (int) R_M32R_10_PCREL : 2917 r = m32r_elf_do_10_pcrel_reloc (input_bfd, howto, input_section, 2918 contents, offset, 2919 sec, relocation, addend); 2920 goto check_reloc; 2921 2922 case (int) R_M32R_HI16_SLO : 2923 case (int) R_M32R_HI16_ULO : 2924 { 2925 Elf_Internal_Rela *lorel; 2926 2927 /* We allow an arbitrary number of HI16 relocs before the 2928 LO16 reloc. This permits gcc to emit the HI and LO relocs 2929 itself. */ 2930 for (lorel = rel + 1; 2931 (lorel < relend 2932 && (ELF32_R_TYPE (lorel->r_info) == R_M32R_HI16_SLO 2933 || ELF32_R_TYPE (lorel->r_info) == R_M32R_HI16_ULO)); 2934 lorel++) 2935 continue; 2936 if (lorel < relend 2937 && ELF32_R_TYPE (lorel->r_info) == R_M32R_LO16) 2938 { 2939 m32r_elf_relocate_hi16 (input_bfd, r_type, rel, lorel, 2940 contents, relocation + addend); 2941 r = bfd_reloc_ok; 2942 } 2943 else 2944 r = _bfd_final_link_relocate (howto, input_bfd, input_section, 2945 contents, offset, 2946 relocation, addend); 2947 } 2948 2949 goto check_reloc; 2950 2951 case (int) R_M32R_SDA16_RELA: 2952 case (int) R_M32R_SDA16 : 2953 { 2954 const char *name; 2955 2956 BFD_ASSERT (sec != NULL); 2957 name = bfd_get_section_name (sec->owner, sec); 2958 2959 if ( strcmp (name, ".sdata") == 0 2960 || strcmp (name, ".sbss") == 0 2961 || strcmp (name, ".scommon") == 0) 2962 { 2963 bfd_vma sda_base; 2964 bfd *out_bfd = sec->output_section->owner; 2965 2966 r = m32r_elf_final_sda_base (out_bfd, info, 2967 &errmsg, 2968 &sda_base); 2969 if (r != bfd_reloc_ok) 2970 { 2971 ret = FALSE; 2972 goto check_reloc; 2973 } 2974 2975 /* At this point `relocation' contains the object's 2976 address. */ 2977 relocation -= sda_base; 2978 /* Now it contains the offset from _SDA_BASE_. */ 2979 } 2980 else 2981 { 2982 _bfd_error_handler 2983 /* xgettext:c-format */ 2984 (_("%B: The target (%s) of an %s relocation is in the wrong section (%A)"), 2985 input_bfd, 2986 sym_name, 2987 m32r_elf_howto_table[(int) r_type].name, 2988 sec); 2989 /*bfd_set_error (bfd_error_bad_value); ??? why? */ 2990 ret = FALSE; 2991 continue; 2992 } 2993 } 2994 /* Fall through. */ 2995 2996 default : /* OLD_M32R_RELOC */ 2997 2998 r = _bfd_final_link_relocate (howto, input_bfd, input_section, 2999 contents, offset, 3000 relocation, addend); 3001 goto check_reloc; 3002 } 3003 3004 r = _bfd_final_link_relocate (howto, input_bfd, input_section, 3005 contents, rel->r_offset, 3006 relocation, rel->r_addend); 3007 3008 } 3009 3010 check_reloc: 3011 3012 if (r != bfd_reloc_ok) 3013 { 3014 /* FIXME: This should be generic enough to go in a utility. */ 3015 const char *name; 3016 3017 if (h != NULL) 3018 name = h->root.root.string; 3019 else 3020 { 3021 name = (bfd_elf_string_from_elf_section 3022 (input_bfd, symtab_hdr->sh_link, sym->st_name)); 3023 if (name == NULL || *name == '\0') 3024 name = bfd_section_name (input_bfd, sec); 3025 } 3026 3027 if (errmsg != NULL) 3028 goto common_error; 3029 3030 switch (r) 3031 { 3032 case bfd_reloc_overflow: 3033 (*info->callbacks->reloc_overflow) 3034 (info, (h ? &h->root : NULL), name, howto->name, 3035 (bfd_vma) 0, input_bfd, input_section, offset); 3036 break; 3037 3038 case bfd_reloc_undefined: 3039 (*info->callbacks->undefined_symbol) 3040 (info, name, input_bfd, input_section, offset, TRUE); 3041 break; 3042 3043 case bfd_reloc_outofrange: 3044 errmsg = _("internal error: out of range error"); 3045 goto common_error; 3046 3047 case bfd_reloc_notsupported: 3048 errmsg = _("internal error: unsupported relocation error"); 3049 goto common_error; 3050 3051 case bfd_reloc_dangerous: 3052 errmsg = _("internal error: dangerous error"); 3053 goto common_error; 3054 3055 default: 3056 errmsg = _("internal error: unknown error"); 3057 /* fall through */ 3058 3059 common_error: 3060 (*info->callbacks->warning) (info, errmsg, name, input_bfd, 3061 input_section, offset); 3062 break; 3063 } 3064 } 3065 } 3066 3067 return ret; 3068 } 3069 3070 /* Finish up dynamic symbol handling. We set the contents of various 3071 dynamic sections here. */ 3072 3073 static bfd_boolean 3074 m32r_elf_finish_dynamic_symbol (bfd *output_bfd, 3075 struct bfd_link_info *info, 3076 struct elf_link_hash_entry *h, 3077 Elf_Internal_Sym *sym) 3078 { 3079 struct elf_m32r_link_hash_table *htab; 3080 bfd_byte *loc; 3081 3082 #ifdef DEBUG_PIC 3083 printf ("m32r_elf_finish_dynamic_symbol()\n"); 3084 #endif 3085 3086 htab = m32r_elf_hash_table (info); 3087 if (htab == NULL) 3088 return FALSE; 3089 3090 if (h->plt.offset != (bfd_vma) -1) 3091 { 3092 asection *splt; 3093 asection *sgot; 3094 asection *srela; 3095 3096 bfd_vma plt_index; 3097 bfd_vma got_offset; 3098 Elf_Internal_Rela rela; 3099 3100 /* This symbol has an entry in the procedure linkage table. Set 3101 it up. */ 3102 3103 BFD_ASSERT (h->dynindx != -1); 3104 3105 splt = htab->root.splt; 3106 sgot = htab->root.sgotplt; 3107 srela = htab->root.srelplt; 3108 BFD_ASSERT (splt != NULL && sgot != NULL && srela != NULL); 3109 3110 /* Get the index in the procedure linkage table which 3111 corresponds to this symbol. This is the index of this symbol 3112 in all the symbols for which we are making plt entries. The 3113 first entry in the procedure linkage table is reserved. */ 3114 plt_index = h->plt.offset / PLT_ENTRY_SIZE - 1; 3115 3116 /* Get the offset into the .got table of the entry that 3117 corresponds to this function. Each .got entry is 4 bytes. 3118 The first three are reserved. */ 3119 got_offset = (plt_index + 3) * 4; 3120 3121 /* Fill in the entry in the procedure linkage table. */ 3122 if (! bfd_link_pic (info)) 3123 { 3124 bfd_put_32 (output_bfd, 3125 (PLT_ENTRY_WORD0b 3126 + (((sgot->output_section->vma 3127 + sgot->output_offset 3128 + got_offset) >> 16) & 0xffff)), 3129 splt->contents + h->plt.offset); 3130 bfd_put_32 (output_bfd, 3131 (PLT_ENTRY_WORD1b 3132 + ((sgot->output_section->vma 3133 + sgot->output_offset 3134 + got_offset) & 0xffff)), 3135 splt->contents + h->plt.offset + 4); 3136 bfd_put_32 (output_bfd, PLT_ENTRY_WORD2, 3137 splt->contents + h->plt.offset + 8); 3138 bfd_put_32 (output_bfd, 3139 (PLT_ENTRY_WORD3 3140 + plt_index * sizeof (Elf32_External_Rela)), 3141 splt->contents + h->plt.offset + 12); 3142 bfd_put_32 (output_bfd, 3143 (PLT_ENTRY_WORD4 3144 + (((unsigned int) ((- (h->plt.offset + 16)) >> 2)) & 0xffffff)), 3145 splt->contents + h->plt.offset + 16); 3146 } 3147 else 3148 { 3149 bfd_put_32 (output_bfd, 3150 PLT_ENTRY_WORD0 + got_offset, 3151 splt->contents + h->plt.offset); 3152 bfd_put_32 (output_bfd, PLT_ENTRY_WORD1, 3153 splt->contents + h->plt.offset + 4); 3154 bfd_put_32 (output_bfd, PLT_ENTRY_WORD2, 3155 splt->contents + h->plt.offset + 8); 3156 bfd_put_32 (output_bfd, 3157 (PLT_ENTRY_WORD3 3158 + plt_index * sizeof (Elf32_External_Rela)), 3159 splt->contents + h->plt.offset + 12); 3160 bfd_put_32 (output_bfd, 3161 (PLT_ENTRY_WORD4 3162 + (((unsigned int) ((- (h->plt.offset + 16)) >> 2)) & 0xffffff)), 3163 splt->contents + h->plt.offset + 16); 3164 } 3165 3166 /* Fill in the entry in the global offset table. */ 3167 bfd_put_32 (output_bfd, 3168 (splt->output_section->vma 3169 + splt->output_offset 3170 + h->plt.offset 3171 + 12), /* same offset */ 3172 sgot->contents + got_offset); 3173 3174 /* Fill in the entry in the .rela.plt section. */ 3175 rela.r_offset = (sgot->output_section->vma 3176 + sgot->output_offset 3177 + got_offset); 3178 rela.r_info = ELF32_R_INFO (h->dynindx, R_M32R_JMP_SLOT); 3179 rela.r_addend = 0; 3180 loc = srela->contents; 3181 loc += plt_index * sizeof (Elf32_External_Rela); 3182 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); 3183 3184 if (!h->def_regular) 3185 { 3186 /* Mark the symbol as undefined, rather than as defined in 3187 the .plt section. Leave the value alone. */ 3188 sym->st_shndx = SHN_UNDEF; 3189 } 3190 } 3191 3192 if (h->got.offset != (bfd_vma) -1) 3193 { 3194 asection *sgot; 3195 asection *srela; 3196 Elf_Internal_Rela rela; 3197 3198 /* This symbol has an entry in the global offset table. Set it 3199 up. */ 3200 3201 sgot = htab->root.sgot; 3202 srela = htab->root.srelgot; 3203 BFD_ASSERT (sgot != NULL && srela != NULL); 3204 3205 rela.r_offset = (sgot->output_section->vma 3206 + sgot->output_offset 3207 + (h->got.offset &~ 1)); 3208 3209 /* If this is a -Bsymbolic link, and the symbol is defined 3210 locally, we just want to emit a RELATIVE reloc. Likewise if 3211 the symbol was forced to be local because of a version file. 3212 The entry in the global offset table will already have been 3213 initialized in the relocate_section function. */ 3214 if (bfd_link_pic (info) 3215 && (info->symbolic 3216 || h->dynindx == -1 3217 || h->forced_local) 3218 && h->def_regular) 3219 { 3220 rela.r_info = ELF32_R_INFO (0, R_M32R_RELATIVE); 3221 rela.r_addend = (h->root.u.def.value 3222 + h->root.u.def.section->output_section->vma 3223 + h->root.u.def.section->output_offset); 3224 } 3225 else 3226 { 3227 BFD_ASSERT ((h->got.offset & 1) == 0); 3228 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + h->got.offset); 3229 rela.r_info = ELF32_R_INFO (h->dynindx, R_M32R_GLOB_DAT); 3230 rela.r_addend = 0; 3231 } 3232 3233 loc = srela->contents; 3234 loc += srela->reloc_count * sizeof (Elf32_External_Rela); 3235 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); 3236 ++srela->reloc_count; 3237 } 3238 3239 if (h->needs_copy) 3240 { 3241 asection *s; 3242 Elf_Internal_Rela rela; 3243 3244 /* This symbols needs a copy reloc. Set it up. */ 3245 3246 BFD_ASSERT (h->dynindx != -1 3247 && (h->root.type == bfd_link_hash_defined 3248 || h->root.type == bfd_link_hash_defweak)); 3249 3250 s = bfd_get_linker_section (htab->root.dynobj, ".rela.bss"); 3251 BFD_ASSERT (s != NULL); 3252 3253 rela.r_offset = (h->root.u.def.value 3254 + h->root.u.def.section->output_section->vma 3255 + h->root.u.def.section->output_offset); 3256 rela.r_info = ELF32_R_INFO (h->dynindx, R_M32R_COPY); 3257 rela.r_addend = 0; 3258 loc = s->contents; 3259 loc += s->reloc_count * sizeof (Elf32_External_Rela); 3260 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); 3261 ++s->reloc_count; 3262 } 3263 3264 /* Mark some specially defined symbols as absolute. */ 3265 if (h == htab->root.hdynamic || h == htab->root.hgot) 3266 sym->st_shndx = SHN_ABS; 3267 3268 return TRUE; 3269 } 3270 3271 3272 /* Finish up the dynamic sections. */ 3273 3274 static bfd_boolean 3275 m32r_elf_finish_dynamic_sections (bfd *output_bfd, 3276 struct bfd_link_info *info) 3277 { 3278 struct elf_m32r_link_hash_table *htab; 3279 bfd *dynobj; 3280 asection *sdyn; 3281 asection *sgot; 3282 3283 #ifdef DEBUG_PIC 3284 printf ("m32r_elf_finish_dynamic_sections()\n"); 3285 #endif 3286 3287 htab = m32r_elf_hash_table (info); 3288 if (htab == NULL) 3289 return FALSE; 3290 3291 dynobj = htab->root.dynobj; 3292 3293 sgot = htab->root.sgotplt; 3294 sdyn = bfd_get_linker_section (dynobj, ".dynamic"); 3295 3296 if (htab->root.dynamic_sections_created) 3297 { 3298 asection *splt; 3299 Elf32_External_Dyn *dyncon, *dynconend; 3300 3301 BFD_ASSERT (sgot != NULL && sdyn != NULL); 3302 3303 dyncon = (Elf32_External_Dyn *) sdyn->contents; 3304 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size); 3305 3306 for (; dyncon < dynconend; dyncon++) 3307 { 3308 Elf_Internal_Dyn dyn; 3309 asection *s; 3310 3311 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn); 3312 3313 switch (dyn.d_tag) 3314 { 3315 default: 3316 break; 3317 3318 case DT_PLTGOT: 3319 s = htab->root.sgotplt; 3320 goto get_vma; 3321 case DT_JMPREL: 3322 s = htab->root.srelplt; 3323 get_vma: 3324 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; 3325 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); 3326 break; 3327 3328 case DT_PLTRELSZ: 3329 s = htab->root.srelplt; 3330 dyn.d_un.d_val = s->size; 3331 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); 3332 break; 3333 } 3334 } 3335 3336 /* Fill in the first entry in the procedure linkage table. */ 3337 splt = htab->root.splt; 3338 if (splt && splt->size > 0) 3339 { 3340 if (bfd_link_pic (info)) 3341 { 3342 bfd_put_32 (output_bfd, PLT0_PIC_ENTRY_WORD0, splt->contents); 3343 bfd_put_32 (output_bfd, PLT0_PIC_ENTRY_WORD1, splt->contents + 4); 3344 bfd_put_32 (output_bfd, PLT0_PIC_ENTRY_WORD2, splt->contents + 8); 3345 bfd_put_32 (output_bfd, PLT0_PIC_ENTRY_WORD3, splt->contents + 12); 3346 bfd_put_32 (output_bfd, PLT0_PIC_ENTRY_WORD4, splt->contents + 16); 3347 } 3348 else 3349 { 3350 unsigned long addr; 3351 /* addr = .got + 4 */ 3352 addr = sgot->output_section->vma + sgot->output_offset + 4; 3353 bfd_put_32 (output_bfd, 3354 PLT0_ENTRY_WORD0 | ((addr >> 16) & 0xffff), 3355 splt->contents); 3356 bfd_put_32 (output_bfd, 3357 PLT0_ENTRY_WORD1 | (addr & 0xffff), 3358 splt->contents + 4); 3359 bfd_put_32 (output_bfd, PLT0_ENTRY_WORD2, splt->contents + 8); 3360 bfd_put_32 (output_bfd, PLT0_ENTRY_WORD3, splt->contents + 12); 3361 bfd_put_32 (output_bfd, PLT0_ENTRY_WORD4, splt->contents + 16); 3362 } 3363 3364 elf_section_data (splt->output_section)->this_hdr.sh_entsize = 3365 PLT_ENTRY_SIZE; 3366 } 3367 } 3368 3369 /* Fill in the first three entries in the global offset table. */ 3370 if (sgot && sgot->size > 0) 3371 { 3372 if (sdyn == NULL) 3373 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents); 3374 else 3375 bfd_put_32 (output_bfd, 3376 sdyn->output_section->vma + sdyn->output_offset, 3377 sgot->contents); 3378 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 4); 3379 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 8); 3380 3381 elf_section_data (sgot->output_section)->this_hdr.sh_entsize = 4; 3382 } 3383 3384 return TRUE; 3385 } 3386 3387 3388 /* Set the right machine number. */ 3389 3390 static bfd_boolean 3391 m32r_elf_object_p (bfd *abfd) 3392 { 3393 switch (elf_elfheader (abfd)->e_flags & EF_M32R_ARCH) 3394 { 3395 default: 3396 case E_M32R_ARCH: (void) bfd_default_set_arch_mach (abfd, bfd_arch_m32r, bfd_mach_m32r); break; 3397 case E_M32RX_ARCH: (void) bfd_default_set_arch_mach (abfd, bfd_arch_m32r, bfd_mach_m32rx); break; 3398 case E_M32R2_ARCH: (void) bfd_default_set_arch_mach (abfd, bfd_arch_m32r, bfd_mach_m32r2); break; 3399 } 3400 return TRUE; 3401 } 3402 3403 /* Store the machine number in the flags field. */ 3404 3405 static void 3406 m32r_elf_final_write_processing (bfd *abfd, 3407 bfd_boolean linker ATTRIBUTE_UNUSED) 3408 { 3409 unsigned long val; 3410 3411 switch (bfd_get_mach (abfd)) 3412 { 3413 default: 3414 case bfd_mach_m32r: val = E_M32R_ARCH; break; 3415 case bfd_mach_m32rx: val = E_M32RX_ARCH; break; 3416 case bfd_mach_m32r2: val = E_M32R2_ARCH; break; 3417 } 3418 3419 elf_elfheader (abfd)->e_flags &=~ EF_M32R_ARCH; 3420 elf_elfheader (abfd)->e_flags |= val; 3421 } 3422 3423 /* Function to keep M32R specific file flags. */ 3424 3425 static bfd_boolean 3426 m32r_elf_set_private_flags (bfd *abfd, flagword flags) 3427 { 3428 BFD_ASSERT (!elf_flags_init (abfd) 3429 || elf_elfheader (abfd)->e_flags == flags); 3430 3431 elf_elfheader (abfd)->e_flags = flags; 3432 elf_flags_init (abfd) = TRUE; 3433 return TRUE; 3434 } 3435 3436 /* Merge backend specific data from an object file to the output 3437 object file when linking. */ 3438 3439 static bfd_boolean 3440 m32r_elf_merge_private_bfd_data (bfd *ibfd, struct bfd_link_info *info) 3441 { 3442 bfd *obfd = info->output_bfd; 3443 flagword out_flags; 3444 flagword in_flags; 3445 3446 if ( bfd_get_flavour (ibfd) != bfd_target_elf_flavour 3447 || bfd_get_flavour (obfd) != bfd_target_elf_flavour) 3448 return TRUE; 3449 3450 in_flags = elf_elfheader (ibfd)->e_flags; 3451 out_flags = elf_elfheader (obfd)->e_flags; 3452 3453 if (! elf_flags_init (obfd)) 3454 { 3455 /* If the input is the default architecture then do not 3456 bother setting the flags for the output architecture, 3457 instead allow future merges to do this. If no future 3458 merges ever set these flags then they will retain their 3459 unitialised values, which surprise surprise, correspond 3460 to the default values. */ 3461 if (bfd_get_arch_info (ibfd)->the_default) 3462 return TRUE; 3463 3464 elf_flags_init (obfd) = TRUE; 3465 elf_elfheader (obfd)->e_flags = in_flags; 3466 3467 if (bfd_get_arch (obfd) == bfd_get_arch (ibfd) 3468 && bfd_get_arch_info (obfd)->the_default) 3469 return bfd_set_arch_mach (obfd, bfd_get_arch (ibfd), 3470 bfd_get_mach (ibfd)); 3471 3472 return TRUE; 3473 } 3474 3475 /* Check flag compatibility. */ 3476 if (in_flags == out_flags) 3477 return TRUE; 3478 3479 if ((in_flags & EF_M32R_ARCH) != (out_flags & EF_M32R_ARCH)) 3480 { 3481 if ( ((in_flags & EF_M32R_ARCH) != E_M32R_ARCH) 3482 || ((out_flags & EF_M32R_ARCH) == E_M32R_ARCH) 3483 || ((in_flags & EF_M32R_ARCH) == E_M32R2_ARCH)) 3484 { 3485 _bfd_error_handler 3486 (_("%B: Instruction set mismatch with previous modules"), ibfd); 3487 3488 bfd_set_error (bfd_error_bad_value); 3489 return FALSE; 3490 } 3491 } 3492 3493 return TRUE; 3494 } 3495 3496 /* Display the flags field. */ 3497 3498 static bfd_boolean 3499 m32r_elf_print_private_bfd_data (bfd *abfd, void * ptr) 3500 { 3501 FILE * file = (FILE *) ptr; 3502 3503 BFD_ASSERT (abfd != NULL && ptr != NULL); 3504 3505 _bfd_elf_print_private_bfd_data (abfd, ptr); 3506 3507 fprintf (file, _("private flags = %lx"), elf_elfheader (abfd)->e_flags); 3508 3509 switch (elf_elfheader (abfd)->e_flags & EF_M32R_ARCH) 3510 { 3511 default: 3512 case E_M32R_ARCH: fprintf (file, _(": m32r instructions")); break; 3513 case E_M32RX_ARCH: fprintf (file, _(": m32rx instructions")); break; 3514 case E_M32R2_ARCH: fprintf (file, _(": m32r2 instructions")); break; 3515 } 3516 3517 fputc ('\n', file); 3518 3519 return TRUE; 3520 } 3521 3522 static asection * 3523 m32r_elf_gc_mark_hook (asection *sec, 3524 struct bfd_link_info *info, 3525 Elf_Internal_Rela *rel, 3526 struct elf_link_hash_entry *h, 3527 Elf_Internal_Sym *sym) 3528 { 3529 if (h != NULL) 3530 switch (ELF32_R_TYPE (rel->r_info)) 3531 { 3532 case R_M32R_GNU_VTINHERIT: 3533 case R_M32R_GNU_VTENTRY: 3534 case R_M32R_RELA_GNU_VTINHERIT: 3535 case R_M32R_RELA_GNU_VTENTRY: 3536 return NULL; 3537 } 3538 3539 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym); 3540 } 3541 3542 static bfd_boolean 3543 m32r_elf_gc_sweep_hook (bfd *abfd ATTRIBUTE_UNUSED, 3544 struct bfd_link_info *info ATTRIBUTE_UNUSED, 3545 asection *sec ATTRIBUTE_UNUSED, 3546 const Elf_Internal_Rela *relocs ATTRIBUTE_UNUSED) 3547 { 3548 /* Update the got entry reference counts for the section being removed. */ 3549 Elf_Internal_Shdr *symtab_hdr; 3550 struct elf_link_hash_entry **sym_hashes; 3551 bfd_signed_vma *local_got_refcounts; 3552 const Elf_Internal_Rela *rel, *relend; 3553 3554 if (bfd_link_relocatable (info)) 3555 return TRUE; 3556 3557 elf_section_data (sec)->local_dynrel = NULL; 3558 3559 symtab_hdr = &elf_tdata (abfd)->symtab_hdr; 3560 sym_hashes = elf_sym_hashes (abfd); 3561 local_got_refcounts = elf_local_got_refcounts (abfd); 3562 3563 relend = relocs + sec->reloc_count; 3564 for (rel = relocs; rel < relend; rel++) 3565 { 3566 unsigned long r_symndx; 3567 struct elf_link_hash_entry *h = NULL; 3568 3569 r_symndx = ELF32_R_SYM (rel->r_info); 3570 if (r_symndx >= symtab_hdr->sh_info) 3571 { 3572 h = sym_hashes[r_symndx - symtab_hdr->sh_info]; 3573 while (h->root.type == bfd_link_hash_indirect 3574 || h->root.type == bfd_link_hash_warning) 3575 h = (struct elf_link_hash_entry *) h->root.u.i.link; 3576 } 3577 3578 switch (ELF32_R_TYPE (rel->r_info)) 3579 { 3580 case R_M32R_GOT16_HI_ULO: 3581 case R_M32R_GOT16_HI_SLO: 3582 case R_M32R_GOT16_LO: 3583 case R_M32R_GOTOFF: 3584 case R_M32R_GOTOFF_HI_ULO: 3585 case R_M32R_GOTOFF_HI_SLO: 3586 case R_M32R_GOTOFF_LO: 3587 case R_M32R_GOT24: 3588 case R_M32R_GOTPC_HI_ULO: 3589 case R_M32R_GOTPC_HI_SLO: 3590 case R_M32R_GOTPC_LO: 3591 case R_M32R_GOTPC24: 3592 if (h != NULL) 3593 { 3594 if (h->got.refcount > 0) 3595 h->got.refcount--; 3596 } 3597 else 3598 { 3599 if (local_got_refcounts && local_got_refcounts[r_symndx] > 0) 3600 local_got_refcounts[r_symndx]--; 3601 } 3602 break; 3603 3604 case R_M32R_16_RELA: 3605 case R_M32R_24_RELA: 3606 case R_M32R_32_RELA: 3607 case R_M32R_REL32: 3608 case R_M32R_HI16_ULO_RELA: 3609 case R_M32R_HI16_SLO_RELA: 3610 case R_M32R_LO16_RELA: 3611 case R_M32R_SDA16_RELA: 3612 case R_M32R_10_PCREL_RELA: 3613 case R_M32R_18_PCREL_RELA: 3614 case R_M32R_26_PCREL_RELA: 3615 if (h != NULL) 3616 { 3617 struct elf_m32r_link_hash_entry *eh; 3618 struct elf_m32r_dyn_relocs **pp; 3619 struct elf_m32r_dyn_relocs *p; 3620 3621 if (!bfd_link_pic (info) && h->plt.refcount > 0) 3622 h->plt.refcount -= 1; 3623 3624 eh = (struct elf_m32r_link_hash_entry *) h; 3625 3626 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next) 3627 if (p->sec == sec) 3628 { 3629 if ( ELF32_R_TYPE (rel->r_info) == R_M32R_26_PCREL_RELA 3630 || ELF32_R_TYPE (rel->r_info) == R_M32R_18_PCREL_RELA 3631 || ELF32_R_TYPE (rel->r_info) == R_M32R_10_PCREL_RELA 3632 || ELF32_R_TYPE (rel->r_info) == R_M32R_REL32) 3633 p->pc_count -= 1; 3634 p->count -= 1; 3635 if (p->count == 0) 3636 *pp = p->next; 3637 break; 3638 } 3639 } 3640 break; 3641 3642 case R_M32R_26_PLTREL: 3643 if (h != NULL) 3644 { 3645 if (h->plt.refcount > 0) 3646 h->plt.refcount--; 3647 } 3648 break; 3649 3650 default: 3651 break; 3652 } 3653 } 3654 3655 return TRUE; 3656 } 3657 3658 /* Look through the relocs for a section during the first phase. 3659 Since we don't do .gots or .plts, we just need to consider the 3660 virtual table relocs for gc. */ 3661 3662 static bfd_boolean 3663 m32r_elf_check_relocs (bfd *abfd, 3664 struct bfd_link_info *info, 3665 asection *sec, 3666 const Elf_Internal_Rela *relocs) 3667 { 3668 Elf_Internal_Shdr *symtab_hdr; 3669 struct elf_link_hash_entry **sym_hashes; 3670 const Elf_Internal_Rela *rel; 3671 const Elf_Internal_Rela *rel_end; 3672 struct elf_m32r_link_hash_table *htab; 3673 bfd *dynobj; 3674 asection *sreloc; 3675 3676 if (bfd_link_relocatable (info)) 3677 return TRUE; 3678 3679 sreloc = NULL; 3680 symtab_hdr = &elf_tdata (abfd)->symtab_hdr; 3681 sym_hashes = elf_sym_hashes (abfd); 3682 3683 htab = m32r_elf_hash_table (info); 3684 if (htab == NULL) 3685 return FALSE; 3686 3687 dynobj = htab->root.dynobj; 3688 3689 rel_end = relocs + sec->reloc_count; 3690 for (rel = relocs; rel < rel_end; rel++) 3691 { 3692 int r_type; 3693 struct elf_link_hash_entry *h; 3694 unsigned long r_symndx; 3695 3696 r_symndx = ELF32_R_SYM (rel->r_info); 3697 r_type = ELF32_R_TYPE (rel->r_info); 3698 if (r_symndx < symtab_hdr->sh_info) 3699 h = NULL; 3700 else 3701 { 3702 h = sym_hashes[r_symndx - symtab_hdr->sh_info]; 3703 while (h->root.type == bfd_link_hash_indirect 3704 || h->root.type == bfd_link_hash_warning) 3705 h = (struct elf_link_hash_entry *) h->root.u.i.link; 3706 3707 /* PR15323, ref flags aren't set for references in the same 3708 object. */ 3709 h->root.non_ir_ref = 1; 3710 } 3711 3712 /* Some relocs require a global offset table. */ 3713 if (htab->root.sgot == NULL) 3714 { 3715 switch (r_type) 3716 { 3717 case R_M32R_GOT16_HI_ULO: 3718 case R_M32R_GOT16_HI_SLO: 3719 case R_M32R_GOTOFF: 3720 case R_M32R_GOTOFF_HI_ULO: 3721 case R_M32R_GOTOFF_HI_SLO: 3722 case R_M32R_GOTOFF_LO: 3723 case R_M32R_GOT16_LO: 3724 case R_M32R_GOTPC24: 3725 case R_M32R_GOTPC_HI_ULO: 3726 case R_M32R_GOTPC_HI_SLO: 3727 case R_M32R_GOTPC_LO: 3728 case R_M32R_GOT24: 3729 if (dynobj == NULL) 3730 htab->root.dynobj = dynobj = abfd; 3731 if (!_bfd_elf_create_got_section (dynobj, info)) 3732 return FALSE; 3733 break; 3734 3735 default: 3736 break; 3737 } 3738 } 3739 3740 switch (r_type) 3741 { 3742 case R_M32R_GOT16_HI_ULO: 3743 case R_M32R_GOT16_HI_SLO: 3744 case R_M32R_GOT16_LO: 3745 case R_M32R_GOT24: 3746 3747 if (h != NULL) 3748 h->got.refcount += 1; 3749 else 3750 { 3751 bfd_signed_vma *local_got_refcounts; 3752 3753 /* This is a global offset table entry for a local 3754 symbol. */ 3755 local_got_refcounts = elf_local_got_refcounts (abfd); 3756 if (local_got_refcounts == NULL) 3757 { 3758 bfd_size_type size; 3759 3760 size = symtab_hdr->sh_info; 3761 size *= sizeof (bfd_signed_vma); 3762 local_got_refcounts = bfd_zalloc (abfd, size); 3763 if (local_got_refcounts == NULL) 3764 return FALSE; 3765 elf_local_got_refcounts (abfd) = local_got_refcounts; 3766 } 3767 local_got_refcounts[r_symndx] += 1; 3768 } 3769 break; 3770 3771 case R_M32R_26_PLTREL: 3772 /* This symbol requires a procedure linkage table entry. We 3773 actually build the entry in adjust_dynamic_symbol, 3774 because this might be a case of linking PIC code without 3775 linking in any dynamic objects, in which case we don't 3776 need to generate a procedure linkage table after all. */ 3777 3778 /* If this is a local symbol, we resolve it directly without 3779 creating a procedure linkage table entry. */ 3780 if (h == NULL) 3781 continue; 3782 3783 if (h->forced_local) 3784 break; 3785 3786 h->needs_plt = 1; 3787 h->plt.refcount += 1; 3788 break; 3789 3790 case R_M32R_16_RELA: 3791 case R_M32R_24_RELA: 3792 case R_M32R_32_RELA: 3793 case R_M32R_REL32: 3794 case R_M32R_HI16_ULO_RELA: 3795 case R_M32R_HI16_SLO_RELA: 3796 case R_M32R_LO16_RELA: 3797 case R_M32R_SDA16_RELA: 3798 case R_M32R_10_PCREL_RELA: 3799 case R_M32R_18_PCREL_RELA: 3800 case R_M32R_26_PCREL_RELA: 3801 3802 if (h != NULL && !bfd_link_pic (info)) 3803 { 3804 h->non_got_ref = 1; 3805 h->plt.refcount += 1; 3806 } 3807 3808 /* If we are creating a shared library, and this is a reloc 3809 against a global symbol, or a non PC relative reloc 3810 against a local symbol, then we need to copy the reloc 3811 into the shared library. However, if we are linking with 3812 -Bsymbolic, we do not need to copy a reloc against a 3813 global symbol which is defined in an object we are 3814 including in the link (i.e., DEF_REGULAR is set). At 3815 this point we have not seen all the input files, so it is 3816 possible that DEF_REGULAR is not set now but will be set 3817 later (it is never cleared). We account for that 3818 possibility below by storing information in the 3819 dyn_relocs field of the hash table entry. A similar 3820 situation occurs when creating shared libraries and symbol 3821 visibility changes render the symbol local. 3822 3823 If on the other hand, we are creating an executable, we 3824 may need to keep relocations for symbols satisfied by a 3825 dynamic library if we manage to avoid copy relocs for the 3826 symbol. */ 3827 if ((bfd_link_pic (info) 3828 && (sec->flags & SEC_ALLOC) != 0 3829 && (( r_type != R_M32R_26_PCREL_RELA 3830 && r_type != R_M32R_18_PCREL_RELA 3831 && r_type != R_M32R_10_PCREL_RELA 3832 && r_type != R_M32R_REL32) 3833 || (h != NULL 3834 && (! info->symbolic 3835 || h->root.type == bfd_link_hash_defweak 3836 || !h->def_regular)))) 3837 || (!bfd_link_pic (info) 3838 && (sec->flags & SEC_ALLOC) != 0 3839 && h != NULL 3840 && (h->root.type == bfd_link_hash_defweak 3841 || !h->def_regular))) 3842 { 3843 struct elf_m32r_dyn_relocs *p; 3844 struct elf_m32r_dyn_relocs **head; 3845 3846 if (dynobj == NULL) 3847 htab->root.dynobj = dynobj = abfd; 3848 3849 /* When creating a shared object, we must copy these 3850 relocs into the output file. We create a reloc 3851 section in dynobj and make room for the reloc. */ 3852 if (sreloc == NULL) 3853 { 3854 sreloc = _bfd_elf_make_dynamic_reloc_section 3855 (sec, dynobj, 2, abfd, /*rela?*/ TRUE); 3856 3857 if (sreloc == NULL) 3858 return FALSE; 3859 } 3860 3861 /* If this is a global symbol, we count the number of 3862 relocations we need for this symbol. */ 3863 if (h != NULL) 3864 head = &((struct elf_m32r_link_hash_entry *) h)->dyn_relocs; 3865 else 3866 { 3867 /* Track dynamic relocs needed for local syms too. */ 3868 asection *s; 3869 void *vpp; 3870 Elf_Internal_Sym *isym; 3871 3872 isym = bfd_sym_from_r_symndx (&htab->sym_cache, 3873 abfd, r_symndx); 3874 if (isym == NULL) 3875 return FALSE; 3876 3877 s = bfd_section_from_elf_index (abfd, isym->st_shndx); 3878 if (s == NULL) 3879 s = sec; 3880 3881 vpp = &elf_section_data (s)->local_dynrel; 3882 head = (struct elf_m32r_dyn_relocs **) vpp; 3883 } 3884 3885 p = *head; 3886 if (p == NULL || p->sec != sec) 3887 { 3888 bfd_size_type amt = sizeof (*p); 3889 3890 p = bfd_alloc (dynobj, amt); 3891 if (p == NULL) 3892 return FALSE; 3893 p->next = *head; 3894 *head = p; 3895 p->sec = sec; 3896 p->count = 0; 3897 p->pc_count = 0; 3898 } 3899 3900 p->count += 1; 3901 if ( ELF32_R_TYPE (rel->r_info) == R_M32R_26_PCREL_RELA 3902 || ELF32_R_TYPE (rel->r_info) == R_M32R_18_PCREL_RELA 3903 || ELF32_R_TYPE (rel->r_info) == R_M32R_10_PCREL_RELA 3904 || ELF32_R_TYPE (rel->r_info) == R_M32R_REL32) 3905 p->pc_count += 1; 3906 } 3907 break; 3908 3909 /* This relocation describes the C++ object vtable hierarchy. 3910 Reconstruct it for later use during GC. */ 3911 case R_M32R_RELA_GNU_VTINHERIT: 3912 case R_M32R_GNU_VTINHERIT: 3913 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset)) 3914 return FALSE; 3915 break; 3916 3917 /* This relocation describes which C++ vtable entries are actually 3918 used. Record for later use during GC. */ 3919 case R_M32R_GNU_VTENTRY: 3920 BFD_ASSERT (h != NULL); 3921 if (h != NULL 3922 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_offset)) 3923 return FALSE; 3924 break; 3925 case R_M32R_RELA_GNU_VTENTRY: 3926 BFD_ASSERT (h != NULL); 3927 if (h != NULL 3928 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend)) 3929 return FALSE; 3930 break; 3931 } 3932 } 3933 3934 return TRUE; 3935 } 3936 3937 static const struct bfd_elf_special_section m32r_elf_special_sections[] = 3938 { 3939 { STRING_COMMA_LEN (".sbss"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE }, 3940 { STRING_COMMA_LEN (".sdata"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, 3941 { NULL, 0, 0, 0, 0 } 3942 }; 3943 3944 static enum elf_reloc_type_class 3945 m32r_elf_reloc_type_class (const struct bfd_link_info *info ATTRIBUTE_UNUSED, 3946 const asection *rel_sec ATTRIBUTE_UNUSED, 3947 const Elf_Internal_Rela *rela) 3948 { 3949 switch ((int) ELF32_R_TYPE (rela->r_info)) 3950 { 3951 case R_M32R_RELATIVE: return reloc_class_relative; 3952 case R_M32R_JMP_SLOT: return reloc_class_plt; 3953 case R_M32R_COPY: return reloc_class_copy; 3954 default: return reloc_class_normal; 3955 } 3956 } 3957 3958 #define ELF_ARCH bfd_arch_m32r 3959 #define ELF_TARGET_ID M32R_ELF_DATA 3960 #define ELF_MACHINE_CODE EM_M32R 3961 #define ELF_MACHINE_ALT1 EM_CYGNUS_M32R 3962 #define ELF_MAXPAGESIZE 0x1 /* Explicitly requested by Mitsubishi. */ 3963 3964 #define TARGET_BIG_SYM m32r_elf32_vec 3965 #define TARGET_BIG_NAME "elf32-m32r" 3966 #define TARGET_LITTLE_SYM m32r_elf32_le_vec 3967 #define TARGET_LITTLE_NAME "elf32-m32rle" 3968 3969 #define elf_info_to_howto m32r_info_to_howto 3970 #define elf_info_to_howto_rel m32r_info_to_howto_rel 3971 #define elf_backend_section_from_bfd_section _bfd_m32r_elf_section_from_bfd_section 3972 #define elf_backend_symbol_processing _bfd_m32r_elf_symbol_processing 3973 #define elf_backend_add_symbol_hook m32r_elf_add_symbol_hook 3974 #define elf_backend_relocate_section m32r_elf_relocate_section 3975 #define elf_backend_gc_mark_hook m32r_elf_gc_mark_hook 3976 #define elf_backend_gc_sweep_hook m32r_elf_gc_sweep_hook 3977 #define elf_backend_check_relocs m32r_elf_check_relocs 3978 3979 #define elf_backend_create_dynamic_sections m32r_elf_create_dynamic_sections 3980 #define bfd_elf32_bfd_link_hash_table_create m32r_elf_link_hash_table_create 3981 #define elf_backend_size_dynamic_sections m32r_elf_size_dynamic_sections 3982 #define elf_backend_omit_section_dynsym \ 3983 ((bfd_boolean (*) (bfd *, struct bfd_link_info *, asection *)) bfd_true) 3984 #define elf_backend_finish_dynamic_sections m32r_elf_finish_dynamic_sections 3985 #define elf_backend_adjust_dynamic_symbol m32r_elf_adjust_dynamic_symbol 3986 #define elf_backend_finish_dynamic_symbol m32r_elf_finish_dynamic_symbol 3987 #define elf_backend_reloc_type_class m32r_elf_reloc_type_class 3988 #define elf_backend_copy_indirect_symbol m32r_elf_copy_indirect_symbol 3989 3990 #define elf_backend_can_gc_sections 1 3991 /*#if !USE_REL 3992 #define elf_backend_rela_normal 1 3993 #endif*/ 3994 #define elf_backend_can_refcount 1 3995 #define elf_backend_want_got_plt 1 3996 #define elf_backend_plt_readonly 1 3997 #define elf_backend_want_plt_sym 0 3998 #define elf_backend_got_header_size 12 3999 #define elf_backend_dtrel_excludes_plt 1 4000 4001 #define elf_backend_may_use_rel_p 1 4002 #ifdef USE_M32R_OLD_RELOC 4003 #define elf_backend_default_use_rela_p 0 4004 #define elf_backend_may_use_rela_p 0 4005 #else 4006 #define elf_backend_default_use_rela_p 1 4007 #define elf_backend_may_use_rela_p 1 4008 #endif 4009 4010 #define elf_backend_object_p m32r_elf_object_p 4011 #define elf_backend_final_write_processing m32r_elf_final_write_processing 4012 #define bfd_elf32_bfd_merge_private_bfd_data m32r_elf_merge_private_bfd_data 4013 #define bfd_elf32_bfd_set_private_flags m32r_elf_set_private_flags 4014 #define bfd_elf32_bfd_print_private_bfd_data m32r_elf_print_private_bfd_data 4015 #define elf_backend_special_sections m32r_elf_special_sections 4016 4017 #include "elf32-target.h" 4018 4019 #undef ELF_MAXPAGESIZE 4020 #define ELF_MAXPAGESIZE 0x1000 4021 4022 #undef TARGET_BIG_SYM 4023 #define TARGET_BIG_SYM m32r_elf32_linux_vec 4024 #undef TARGET_BIG_NAME 4025 #define TARGET_BIG_NAME "elf32-m32r-linux" 4026 #undef TARGET_LITTLE_SYM 4027 #define TARGET_LITTLE_SYM m32r_elf32_linux_le_vec 4028 #undef TARGET_LITTLE_NAME 4029 #define TARGET_LITTLE_NAME "elf32-m32rle-linux" 4030 #undef elf32_bed 4031 #define elf32_bed elf32_m32r_lin_bed 4032 4033 #include "elf32-target.h" 4034