1 /* M32R-specific support for 32-bit ELF. 2 Copyright (C) 1996-2014 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. 287 HI16_SLO is for the add3 and load/store with displacement instructions. 288 HI16_ULO is for the or3 instruction. 289 For R_M32R_HI16_SLO, the lower 16 bits are sign extended when added to 290 the high 16 bytes so if the lower 16 bits are negative (bit 15 == 1) then 291 we must add one to the high 16 bytes (which will get subtracted off when 292 the low 16 bits are added). 293 These relocs have to be done in combination with an R_M32R_LO16 reloc 294 because there is a carry from the LO16 to the HI16. Here we just save 295 the information we need; we do the actual relocation when we see the LO16. 296 This code is copied from the elf32-mips.c. We also support an arbitrary 297 number of HI16 relocs to be associated with a single LO16 reloc. The 298 assembler sorts the relocs to ensure each HI16 immediately precedes its 299 LO16. However if there are multiple copies, the assembler may not find 300 the real LO16 so it picks the first one it finds. */ 301 302 struct m32r_hi16 303 { 304 struct m32r_hi16 *next; 305 bfd_byte *addr; 306 bfd_vma addend; 307 }; 308 309 /* FIXME: This should not be a static variable. */ 310 311 static struct m32r_hi16 *m32r_hi16_list; 312 313 static bfd_reloc_status_type 314 m32r_elf_hi16_reloc (bfd *abfd ATTRIBUTE_UNUSED, 315 arelent *reloc_entry, 316 asymbol *symbol, 317 void * data, 318 asection *input_section, 319 bfd *output_bfd, 320 char **error_message ATTRIBUTE_UNUSED) 321 { 322 bfd_reloc_status_type ret; 323 bfd_vma relocation; 324 struct m32r_hi16 *n; 325 326 /* This part is from bfd_elf_generic_reloc. 327 If we're relocating, and this an external symbol, we don't want 328 to change anything. */ 329 if (output_bfd != NULL 330 && (symbol->flags & BSF_SECTION_SYM) == 0 331 && reloc_entry->addend == 0) 332 { 333 reloc_entry->address += input_section->output_offset; 334 return bfd_reloc_ok; 335 } 336 337 /* Sanity check the address (offset in section). */ 338 if (reloc_entry->address > bfd_get_section_limit (abfd, input_section)) 339 return bfd_reloc_outofrange; 340 341 ret = bfd_reloc_ok; 342 if (bfd_is_und_section (symbol->section) 343 && output_bfd == NULL) 344 ret = bfd_reloc_undefined; 345 346 if (bfd_is_com_section (symbol->section)) 347 relocation = 0; 348 else 349 relocation = symbol->value; 350 351 relocation += symbol->section->output_section->vma; 352 relocation += symbol->section->output_offset; 353 relocation += reloc_entry->addend; 354 355 /* Save the information, and let LO16 do the actual relocation. */ 356 n = bfd_malloc ((bfd_size_type) sizeof *n); 357 if (n == NULL) 358 return bfd_reloc_outofrange; 359 n->addr = (bfd_byte *) data + reloc_entry->address; 360 n->addend = relocation; 361 n->next = m32r_hi16_list; 362 m32r_hi16_list = n; 363 364 if (output_bfd != NULL) 365 reloc_entry->address += input_section->output_offset; 366 367 return ret; 368 } 369 370 /* Handle an M32R ELF HI16 reloc. */ 371 372 static void 373 m32r_elf_relocate_hi16 (bfd *input_bfd, 374 int type, 375 Elf_Internal_Rela *relhi, 376 Elf_Internal_Rela *rello, 377 bfd_byte *contents, 378 bfd_vma addend) 379 { 380 unsigned long insn; 381 bfd_vma addlo; 382 383 insn = bfd_get_32 (input_bfd, contents + relhi->r_offset); 384 385 addlo = bfd_get_32 (input_bfd, contents + rello->r_offset); 386 if (type == R_M32R_HI16_SLO) 387 addlo = ((addlo & 0xffff) ^ 0x8000) - 0x8000; 388 else 389 addlo &= 0xffff; 390 391 addend += ((insn & 0xffff) << 16) + addlo; 392 393 /* Reaccount for sign extension of low part. */ 394 if (type == R_M32R_HI16_SLO 395 && (addend & 0x8000) != 0) 396 addend += 0x10000; 397 398 bfd_put_32 (input_bfd, 399 (insn & 0xffff0000) | ((addend >> 16) & 0xffff), 400 contents + relhi->r_offset); 401 } 402 403 /* Do an R_M32R_LO16 relocation. This is a straightforward 16 bit 404 inplace relocation; this function exists in order to do the 405 R_M32R_HI16_[SU]LO relocation described above. */ 406 407 static bfd_reloc_status_type 408 m32r_elf_lo16_reloc (bfd *input_bfd, 409 arelent *reloc_entry, 410 asymbol *symbol, 411 void * data, 412 asection *input_section, 413 bfd *output_bfd, 414 char **error_message) 415 { 416 /* This part is from bfd_elf_generic_reloc. 417 If we're relocating, and this an external symbol, we don't want 418 to change anything. */ 419 if (output_bfd != NULL 420 && (symbol->flags & BSF_SECTION_SYM) == 0 421 && reloc_entry->addend == 0) 422 { 423 reloc_entry->address += input_section->output_offset; 424 return bfd_reloc_ok; 425 } 426 427 if (m32r_hi16_list != NULL) 428 { 429 struct m32r_hi16 *l; 430 431 l = m32r_hi16_list; 432 while (l != NULL) 433 { 434 unsigned long insn; 435 unsigned long val; 436 unsigned long vallo; 437 struct m32r_hi16 *next; 438 439 /* Do the HI16 relocation. Note that we actually don't need 440 to know anything about the LO16 itself, except where to 441 find the low 16 bits of the addend needed by the LO16. */ 442 insn = bfd_get_32 (input_bfd, l->addr); 443 vallo = ((bfd_get_32 (input_bfd, (bfd_byte *) data + reloc_entry->address) 444 & 0xffff) ^ 0x8000) - 0x8000; 445 val = ((insn & 0xffff) << 16) + vallo; 446 val += l->addend; 447 448 /* Reaccount for sign extension of low part. */ 449 if ((val & 0x8000) != 0) 450 val += 0x10000; 451 452 insn = (insn &~ (bfd_vma) 0xffff) | ((val >> 16) & 0xffff); 453 bfd_put_32 (input_bfd, (bfd_vma) insn, l->addr); 454 455 next = l->next; 456 free (l); 457 l = next; 458 } 459 460 m32r_hi16_list = NULL; 461 } 462 463 /* Now do the LO16 reloc in the usual way. 464 ??? It would be nice to call bfd_elf_generic_reloc here, 465 but we have partial_inplace set. bfd_elf_generic_reloc will 466 pass the handling back to bfd_install_relocation which will install 467 a section relative addend which is wrong. */ 468 return m32r_elf_generic_reloc (input_bfd, reloc_entry, symbol, data, 469 input_section, output_bfd, error_message); 470 } 471 472 473 static reloc_howto_type m32r_elf_howto_table[] = 475 { 476 /* This reloc does nothing. */ 477 HOWTO (R_M32R_NONE, /* type */ 478 0, /* rightshift */ 479 2, /* size (0 = byte, 1 = short, 2 = long) */ 480 32, /* bitsize */ 481 FALSE, /* pc_relative */ 482 0, /* bitpos */ 483 complain_overflow_bitfield, /* complain_on_overflow */ 484 bfd_elf_generic_reloc, /* special_function */ 485 "R_M32R_NONE", /* name */ 486 FALSE, /* partial_inplace */ 487 0, /* src_mask */ 488 0, /* dst_mask */ 489 FALSE), /* pcrel_offset */ 490 491 /* A 16 bit absolute relocation. */ 492 HOWTO (R_M32R_16, /* type */ 493 0, /* rightshift */ 494 1, /* size (0 = byte, 1 = short, 2 = long) */ 495 16, /* bitsize */ 496 FALSE, /* pc_relative */ 497 0, /* bitpos */ 498 complain_overflow_bitfield, /* complain_on_overflow */ 499 m32r_elf_generic_reloc,/* special_function */ 500 "R_M32R_16", /* name */ 501 TRUE, /* partial_inplace */ 502 0xffff, /* src_mask */ 503 0xffff, /* dst_mask */ 504 FALSE), /* pcrel_offset */ 505 506 /* A 32 bit absolute relocation. */ 507 HOWTO (R_M32R_32, /* type */ 508 0, /* rightshift */ 509 2, /* size (0 = byte, 1 = short, 2 = long) */ 510 32, /* bitsize */ 511 FALSE, /* pc_relative */ 512 0, /* bitpos */ 513 complain_overflow_bitfield, /* complain_on_overflow */ 514 m32r_elf_generic_reloc,/* special_function */ 515 "R_M32R_32", /* name */ 516 TRUE, /* partial_inplace */ 517 0xffffffff, /* src_mask */ 518 0xffffffff, /* dst_mask */ 519 FALSE), /* pcrel_offset */ 520 521 /* A 24 bit address. */ 522 HOWTO (R_M32R_24, /* type */ 523 0, /* rightshift */ 524 2, /* size (0 = byte, 1 = short, 2 = long) */ 525 24, /* bitsize */ 526 FALSE, /* pc_relative */ 527 0, /* bitpos */ 528 complain_overflow_unsigned, /* complain_on_overflow */ 529 m32r_elf_generic_reloc,/* special_function */ 530 "R_M32R_24", /* name */ 531 TRUE, /* partial_inplace */ 532 0xffffff, /* src_mask */ 533 0xffffff, /* dst_mask */ 534 FALSE), /* pcrel_offset */ 535 536 /* An PC Relative 10-bit relocation, shifted by 2. 537 This reloc is complicated because relocations are relative to pc & -4. 538 i.e. branches in the right insn slot use the address of the left insn 539 slot for pc. */ 540 /* ??? It's not clear whether this should have partial_inplace set or not. 541 Branch relaxing in the assembler can store the addend in the insn, 542 and if bfd_install_relocation gets called the addend may get added 543 again. */ 544 HOWTO (R_M32R_10_PCREL, /* type */ 545 2, /* rightshift */ 546 1, /* size (0 = byte, 1 = short, 2 = long) */ 547 10, /* bitsize */ 548 TRUE, /* pc_relative */ 549 0, /* bitpos */ 550 complain_overflow_signed, /* complain_on_overflow */ 551 m32r_elf_10_pcrel_reloc, /* special_function */ 552 "R_M32R_10_PCREL", /* name */ 553 FALSE, /* partial_inplace */ 554 0xff, /* src_mask */ 555 0xff, /* dst_mask */ 556 TRUE), /* pcrel_offset */ 557 558 /* A relative 18 bit relocation, right shifted by 2. */ 559 HOWTO (R_M32R_18_PCREL, /* type */ 560 2, /* rightshift */ 561 2, /* size (0 = byte, 1 = short, 2 = long) */ 562 16, /* bitsize */ 563 TRUE, /* pc_relative */ 564 0, /* bitpos */ 565 complain_overflow_signed, /* complain_on_overflow */ 566 bfd_elf_generic_reloc, /* special_function */ 567 "R_M32R_18_PCREL", /* name */ 568 FALSE, /* partial_inplace */ 569 0xffff, /* src_mask */ 570 0xffff, /* dst_mask */ 571 TRUE), /* pcrel_offset */ 572 573 /* A relative 26 bit relocation, right shifted by 2. */ 574 /* ??? It's not clear whether this should have partial_inplace set or not. 575 Branch relaxing in the assembler can store the addend in the insn, 576 and if bfd_install_relocation gets called the addend may get added 577 again. */ 578 HOWTO (R_M32R_26_PCREL, /* type */ 579 2, /* rightshift */ 580 2, /* size (0 = byte, 1 = short, 2 = long) */ 581 26, /* bitsize */ 582 TRUE, /* pc_relative */ 583 0, /* bitpos */ 584 complain_overflow_signed, /* complain_on_overflow */ 585 bfd_elf_generic_reloc, /* special_function */ 586 "R_M32R_26_PCREL", /* name */ 587 FALSE, /* partial_inplace */ 588 0xffffff, /* src_mask */ 589 0xffffff, /* dst_mask */ 590 TRUE), /* pcrel_offset */ 591 592 /* High 16 bits of address when lower 16 is or'd in. */ 593 HOWTO (R_M32R_HI16_ULO, /* type */ 594 16, /* rightshift */ 595 2, /* size (0 = byte, 1 = short, 2 = long) */ 596 16, /* bitsize */ 597 FALSE, /* pc_relative */ 598 0, /* bitpos */ 599 complain_overflow_dont, /* complain_on_overflow */ 600 m32r_elf_hi16_reloc, /* special_function */ 601 "R_M32R_HI16_ULO", /* name */ 602 TRUE, /* partial_inplace */ 603 0x0000ffff, /* src_mask */ 604 0x0000ffff, /* dst_mask */ 605 FALSE), /* pcrel_offset */ 606 607 /* High 16 bits of address when lower 16 is added in. */ 608 HOWTO (R_M32R_HI16_SLO, /* type */ 609 16, /* rightshift */ 610 2, /* size (0 = byte, 1 = short, 2 = long) */ 611 16, /* bitsize */ 612 FALSE, /* pc_relative */ 613 0, /* bitpos */ 614 complain_overflow_dont, /* complain_on_overflow */ 615 m32r_elf_hi16_reloc, /* special_function */ 616 "R_M32R_HI16_SLO", /* name */ 617 TRUE, /* partial_inplace */ 618 0x0000ffff, /* src_mask */ 619 0x0000ffff, /* dst_mask */ 620 FALSE), /* pcrel_offset */ 621 622 /* Lower 16 bits of address. */ 623 HOWTO (R_M32R_LO16, /* type */ 624 0, /* rightshift */ 625 2, /* size (0 = byte, 1 = short, 2 = long) */ 626 16, /* bitsize */ 627 FALSE, /* pc_relative */ 628 0, /* bitpos */ 629 complain_overflow_dont, /* complain_on_overflow */ 630 m32r_elf_lo16_reloc, /* special_function */ 631 "R_M32R_LO16", /* name */ 632 TRUE, /* partial_inplace */ 633 0x0000ffff, /* src_mask */ 634 0x0000ffff, /* dst_mask */ 635 FALSE), /* pcrel_offset */ 636 637 /* Small data area 16 bits offset. */ 638 HOWTO (R_M32R_SDA16, /* type */ 639 0, /* rightshift */ 640 2, /* size (0 = byte, 1 = short, 2 = long) */ 641 16, /* bitsize */ 642 FALSE, /* pc_relative */ 643 0, /* bitpos */ 644 complain_overflow_signed, /* complain_on_overflow */ 645 m32r_elf_sda16_reloc, /* special_function */ 646 "R_M32R_SDA16", /* name */ 647 TRUE, /* partial_inplace */ /* FIXME: correct? */ 648 0x0000ffff, /* src_mask */ 649 0x0000ffff, /* dst_mask */ 650 FALSE), /* pcrel_offset */ 651 652 /* GNU extension to record C++ vtable hierarchy. */ 653 HOWTO (R_M32R_GNU_VTINHERIT, /* type */ 654 0, /* rightshift */ 655 2, /* size (0 = byte, 1 = short, 2 = long) */ 656 0, /* bitsize */ 657 FALSE, /* pc_relative */ 658 0, /* bitpos */ 659 complain_overflow_dont, /* complain_on_overflow */ 660 NULL, /* special_function */ 661 "R_M32R_GNU_VTINHERIT", /* name */ 662 FALSE, /* partial_inplace */ 663 0, /* src_mask */ 664 0, /* dst_mask */ 665 FALSE), /* pcrel_offset */ 666 667 /* GNU extension to record C++ vtable member usage. */ 668 HOWTO (R_M32R_GNU_VTENTRY, /* type */ 669 0, /* rightshift */ 670 2, /* size (0 = byte, 1 = short, 2 = long) */ 671 0, /* bitsize */ 672 FALSE, /* pc_relative */ 673 0, /* bitpos */ 674 complain_overflow_dont, /* complain_on_overflow */ 675 _bfd_elf_rel_vtable_reloc_fn, /* special_function */ 676 "R_M32R_GNU_VTENTRY", /* name */ 677 FALSE, /* partial_inplace */ 678 0, /* src_mask */ 679 0, /* dst_mask */ 680 FALSE), /* pcrel_offset */ 681 682 EMPTY_HOWTO (13), 683 EMPTY_HOWTO (14), 684 EMPTY_HOWTO (15), 685 EMPTY_HOWTO (16), 686 EMPTY_HOWTO (17), 687 EMPTY_HOWTO (18), 688 EMPTY_HOWTO (19), 689 EMPTY_HOWTO (20), 690 EMPTY_HOWTO (21), 691 EMPTY_HOWTO (22), 692 EMPTY_HOWTO (23), 693 EMPTY_HOWTO (24), 694 EMPTY_HOWTO (25), 695 EMPTY_HOWTO (26), 696 EMPTY_HOWTO (27), 697 EMPTY_HOWTO (28), 698 EMPTY_HOWTO (29), 699 EMPTY_HOWTO (30), 700 EMPTY_HOWTO (31), 701 EMPTY_HOWTO (32), 702 703 /* A 16 bit absolute relocation. */ 704 HOWTO (R_M32R_16_RELA, /* type */ 705 0, /* rightshift */ 706 1, /* size (0 = byte, 1 = short, 2 = long) */ 707 16, /* bitsize */ 708 FALSE, /* pc_relative */ 709 0, /* bitpos */ 710 complain_overflow_bitfield, /* complain_on_overflow */ 711 bfd_elf_generic_reloc, /* special_function */ 712 "R_M32R_16_RELA", /* name */ 713 FALSE, /* partial_inplace */ 714 0xffff, /* src_mask */ 715 0xffff, /* dst_mask */ 716 FALSE), /* pcrel_offset */ 717 718 /* A 32 bit absolute relocation. */ 719 HOWTO (R_M32R_32_RELA, /* type */ 720 0, /* rightshift */ 721 2, /* size (0 = byte, 1 = short, 2 = long) */ 722 32, /* bitsize */ 723 FALSE, /* pc_relative */ 724 0, /* bitpos */ 725 complain_overflow_bitfield, /* complain_on_overflow */ 726 bfd_elf_generic_reloc,/* special_function */ 727 "R_M32R_32_RELA", /* name */ 728 FALSE, /* partial_inplace */ 729 0xffffffff, /* src_mask */ 730 0xffffffff, /* dst_mask */ 731 FALSE), /* pcrel_offset */ 732 733 /* A 24 bit address. */ 734 HOWTO (R_M32R_24_RELA, /* type */ 735 0, /* rightshift */ 736 2, /* size (0 = byte, 1 = short, 2 = long) */ 737 24, /* bitsize */ 738 FALSE, /* pc_relative */ 739 0, /* bitpos */ 740 complain_overflow_unsigned, /* complain_on_overflow */ 741 bfd_elf_generic_reloc,/* special_function */ 742 "R_M32R_24_RELA", /* name */ 743 FALSE, /* partial_inplace */ 744 0xffffff, /* src_mask */ 745 0xffffff, /* dst_mask */ 746 FALSE), /* pcrel_offset */ 747 748 HOWTO (R_M32R_10_PCREL_RELA, /* type */ 749 2, /* rightshift */ 750 1, /* size (0 = byte, 1 = short, 2 = long) */ 751 10, /* bitsize */ 752 TRUE, /* pc_relative */ 753 0, /* bitpos */ 754 complain_overflow_signed, /* complain_on_overflow */ 755 m32r_elf_10_pcrel_reloc, /* special_function */ 756 "R_M32R_10_PCREL_RELA",/* name */ 757 FALSE, /* partial_inplace */ 758 0xff, /* src_mask */ 759 0xff, /* dst_mask */ 760 TRUE), /* pcrel_offset */ 761 762 /* A relative 18 bit relocation, right shifted by 2. */ 763 HOWTO (R_M32R_18_PCREL_RELA, /* type */ 764 2, /* rightshift */ 765 2, /* size (0 = byte, 1 = short, 2 = long) */ 766 16, /* bitsize */ 767 TRUE, /* pc_relative */ 768 0, /* bitpos */ 769 complain_overflow_signed, /* complain_on_overflow */ 770 bfd_elf_generic_reloc, /* special_function */ 771 "R_M32R_18_PCREL_RELA",/* name */ 772 FALSE, /* partial_inplace */ 773 0xffff, /* src_mask */ 774 0xffff, /* dst_mask */ 775 TRUE), /* pcrel_offset */ 776 777 /* A relative 26 bit relocation, right shifted by 2. */ 778 HOWTO (R_M32R_26_PCREL_RELA, /* type */ 779 2, /* rightshift */ 780 2, /* size (0 = byte, 1 = short, 2 = long) */ 781 26, /* bitsize */ 782 TRUE, /* pc_relative */ 783 0, /* bitpos */ 784 complain_overflow_signed, /* complain_on_overflow */ 785 bfd_elf_generic_reloc, /* special_function */ 786 "R_M32R_26_PCREL_RELA",/* name */ 787 FALSE, /* partial_inplace */ 788 0xffffff, /* src_mask */ 789 0xffffff, /* dst_mask */ 790 TRUE), /* pcrel_offset */ 791 792 /* High 16 bits of address when lower 16 is or'd in. */ 793 HOWTO (R_M32R_HI16_ULO_RELA, /* type */ 794 16, /* rightshift */ 795 2, /* size (0 = byte, 1 = short, 2 = long) */ 796 16, /* bitsize */ 797 FALSE, /* pc_relative */ 798 0, /* bitpos */ 799 complain_overflow_dont, /* complain_on_overflow */ 800 bfd_elf_generic_reloc, /* special_function */ 801 "R_M32R_HI16_ULO_RELA",/* name */ 802 FALSE, /* partial_inplace */ 803 0x0000ffff, /* src_mask */ 804 0x0000ffff, /* dst_mask */ 805 FALSE), /* pcrel_offset */ 806 807 /* High 16 bits of address when lower 16 is added in. */ 808 HOWTO (R_M32R_HI16_SLO_RELA, /* type */ 809 16, /* rightshift */ 810 2, /* size (0 = byte, 1 = short, 2 = long) */ 811 16, /* bitsize */ 812 FALSE, /* pc_relative */ 813 0, /* bitpos */ 814 complain_overflow_dont, /* complain_on_overflow */ 815 bfd_elf_generic_reloc, /* special_function */ 816 "R_M32R_HI16_SLO_RELA",/* name */ 817 FALSE, /* partial_inplace */ 818 0x0000ffff, /* src_mask */ 819 0x0000ffff, /* dst_mask */ 820 FALSE), /* pcrel_offset */ 821 822 /* Lower 16 bits of address. */ 823 HOWTO (R_M32R_LO16_RELA, /* type */ 824 0, /* rightshift */ 825 2, /* size (0 = byte, 1 = short, 2 = long) */ 826 16, /* bitsize */ 827 FALSE, /* pc_relative */ 828 0, /* bitpos */ 829 complain_overflow_dont, /* complain_on_overflow */ 830 bfd_elf_generic_reloc, /* special_function */ 831 "R_M32R_LO16_RELA", /* name */ 832 FALSE, /* partial_inplace */ 833 0x0000ffff, /* src_mask */ 834 0x0000ffff, /* dst_mask */ 835 FALSE), /* pcrel_offset */ 836 837 /* Small data area 16 bits offset. */ 838 HOWTO (R_M32R_SDA16_RELA, /* type */ 839 0, /* rightshift */ 840 2, /* size (0 = byte, 1 = short, 2 = long) */ 841 16, /* bitsize */ 842 FALSE, /* pc_relative */ 843 0, /* bitpos */ 844 complain_overflow_signed, /* complain_on_overflow */ 845 bfd_elf_generic_reloc, /* special_function */ 846 "R_M32R_SDA16_RELA", /* name */ 847 TRUE, /* partial_inplace */ /* FIXME: correct? */ 848 0x0000ffff, /* src_mask */ 849 0x0000ffff, /* dst_mask */ 850 FALSE), /* pcrel_offset */ 851 852 /* GNU extension to record C++ vtable hierarchy. */ 853 HOWTO (R_M32R_RELA_GNU_VTINHERIT, /* type */ 854 0, /* rightshift */ 855 2, /* size (0 = byte, 1 = short, 2 = long) */ 856 0, /* bitsize */ 857 FALSE, /* pc_relative */ 858 0, /* bitpos */ 859 complain_overflow_dont, /* complain_on_overflow */ 860 NULL, /* special_function */ 861 "R_M32R_RELA_GNU_VTINHERIT", /* name */ 862 FALSE, /* partial_inplace */ 863 0, /* src_mask */ 864 0, /* dst_mask */ 865 FALSE), /* pcrel_offset */ 866 867 /* GNU extension to record C++ vtable member usage. */ 868 HOWTO (R_M32R_RELA_GNU_VTENTRY, /* type */ 869 0, /* rightshift */ 870 2, /* size (0 = byte, 1 = short, 2 = long) */ 871 0, /* bitsize */ 872 FALSE, /* pc_relative */ 873 0, /* bitpos */ 874 complain_overflow_dont, /* complain_on_overflow */ 875 _bfd_elf_rel_vtable_reloc_fn, /* special_function */ 876 "R_M32R_RELA_GNU_VTENTRY", /* name */ 877 FALSE, /* partial_inplace */ 878 0, /* src_mask */ 879 0, /* dst_mask */ 880 FALSE), /* pcrel_offset */ 881 882 /* A 32 bit PC relative relocation. */ 883 HOWTO (R_M32R_REL32, /* type */ 884 0, /* rightshift */ 885 2, /* size (0 = byte, 1 = short, 2 = long) */ 886 32, /* bitsize */ 887 TRUE, /* pc_relative */ 888 0, /* bitpos */ 889 complain_overflow_bitfield, /* complain_on_overflow */ 890 bfd_elf_generic_reloc,/* special_function */ 891 "R_M32R_REL32", /* name */ 892 FALSE, /* partial_inplace */ 893 0xffffffff, /* src_mask */ 894 0xffffffff, /* dst_mask */ 895 TRUE), /* pcrel_offset */ 896 897 EMPTY_HOWTO (46), 898 EMPTY_HOWTO (47), 899 900 /* Like R_M32R_24, but referring to the GOT table entry for 901 the symbol. */ 902 HOWTO (R_M32R_GOT24, /* type */ 903 0, /* rightshift */ 904 2, /* size (0 = byte, 1 = short, 2 = long) */ 905 24, /* bitsize */ 906 FALSE, /* pc_relative */ 907 0, /* bitpos */ 908 complain_overflow_unsigned, /* complain_on_overflow */ 909 bfd_elf_generic_reloc, /* special_function */ 910 "R_M32R_GOT24", /* name */ 911 FALSE, /* partial_inplace */ 912 0xffffff, /* src_mask */ 913 0xffffff, /* dst_mask */ 914 FALSE), /* pcrel_offset */ 915 916 /* Like R_M32R_PCREL, but referring to the procedure linkage table 917 entry for the symbol. */ 918 HOWTO (R_M32R_26_PLTREL, /* type */ 919 2, /* rightshift */ 920 2, /* size (0 = byte, 1 = short, 2 = long) */ 921 24, /* bitsize */ 922 TRUE, /* pc_relative */ 923 0, /* bitpos */ 924 complain_overflow_signed, /* complain_on_overflow */ 925 bfd_elf_generic_reloc, /* special_function */ 926 "R_M32R_26_PLTREL", /* name */ 927 FALSE, /* partial_inplace */ 928 0xffffff, /* src_mask */ 929 0xffffff, /* dst_mask */ 930 TRUE), /* pcrel_offset */ 931 932 /* This is used only by the dynamic linker. The symbol should exist 933 both in the object being run and in some shared library. The 934 dynamic linker copies the data addressed by the symbol from the 935 shared library into the object, because the object being 936 run has to have the data at some particular address. */ 937 HOWTO (R_M32R_COPY, /* type */ 938 0, /* rightshift */ 939 2, /* size (0 = byte, 1 = short, 2 = long) */ 940 32, /* bitsize */ 941 FALSE, /* pc_relative */ 942 0, /* bitpos */ 943 complain_overflow_bitfield, /* complain_on_overflow */ 944 bfd_elf_generic_reloc, /* special_function */ 945 "R_M32R_COPY", /* name */ 946 FALSE, /* partial_inplace */ 947 0xffffffff, /* src_mask */ 948 0xffffffff, /* dst_mask */ 949 FALSE), /* pcrel_offset */ 950 951 /* Like R_M32R_24, but used when setting global offset table 952 entries. */ 953 HOWTO (R_M32R_GLOB_DAT, /* type */ 954 0, /* rightshift */ 955 2, /* size (0 = byte, 1 = short, 2 = long) */ 956 32, /* bitsize */ 957 FALSE, /* pc_relative */ 958 0, /* bitpos */ 959 complain_overflow_bitfield, /* complain_on_overflow */ 960 bfd_elf_generic_reloc, /* special_function */ 961 "R_M32R_GLOB_DAT", /* name */ 962 FALSE, /* partial_inplace */ 963 0xffffffff, /* src_mask */ 964 0xffffffff, /* dst_mask */ 965 FALSE), /* pcrel_offset */ 966 967 /* Marks a procedure linkage table entry for a symbol. */ 968 HOWTO (R_M32R_JMP_SLOT, /* type */ 969 0, /* rightshift */ 970 2, /* size (0 = byte, 1 = short, 2 = long) */ 971 32, /* bitsize */ 972 FALSE, /* pc_relative */ 973 0, /* bitpos */ 974 complain_overflow_bitfield, /* complain_on_overflow */ 975 bfd_elf_generic_reloc, /* special_function */ 976 "R_M32R_JMP_SLOT", /* name */ 977 FALSE, /* partial_inplace */ 978 0xffffffff, /* src_mask */ 979 0xffffffff, /* dst_mask */ 980 FALSE), /* pcrel_offset */ 981 982 /* Used only by the dynamic linker. When the object is run, this 983 longword is set to the load address of the object, plus the 984 addend. */ 985 HOWTO (R_M32R_RELATIVE, /* type */ 986 0, /* rightshift */ 987 2, /* size (0 = byte, 1 = short, 2 = long) */ 988 32, /* bitsize */ 989 FALSE, /* pc_relative */ 990 0, /* bitpos */ 991 complain_overflow_bitfield, /* complain_on_overflow */ 992 bfd_elf_generic_reloc, /* special_function */ 993 "R_M32R_RELATIVE", /* name */ 994 FALSE, /* partial_inplace */ 995 0xffffffff, /* src_mask */ 996 0xffffffff, /* dst_mask */ 997 FALSE), /* pcrel_offset */ 998 999 HOWTO (R_M32R_GOTOFF, /* type */ 1000 0, /* rightshift */ 1001 2, /* size (0 = byte, 1 = short, 2 = long) */ 1002 24, /* bitsize */ 1003 FALSE, /* pc_relative */ 1004 0, /* bitpos */ 1005 complain_overflow_bitfield, /* complain_on_overflow */ 1006 bfd_elf_generic_reloc, /* special_function */ 1007 "R_M32R_GOTOFF", /* name */ 1008 FALSE, /* partial_inplace */ 1009 0xffffff, /* src_mask */ 1010 0xffffff, /* dst_mask */ 1011 FALSE), /* pcrel_offset */ 1012 1013 /* An PC Relative 24-bit relocation used when setting PIC offset 1014 table register. */ 1015 HOWTO (R_M32R_GOTPC24, /* type */ 1016 0, /* rightshift */ 1017 2, /* size (0 = byte, 1 = short, 2 = long) */ 1018 24, /* bitsize */ 1019 TRUE, /* pc_relative */ 1020 0, /* bitpos */ 1021 complain_overflow_unsigned, /* complain_on_overflow */ 1022 bfd_elf_generic_reloc, /* special_function */ 1023 "R_M32R_GOTPC24", /* name */ 1024 FALSE, /* partial_inplace */ 1025 0xffffff, /* src_mask */ 1026 0xffffff, /* dst_mask */ 1027 TRUE), /* pcrel_offset */ 1028 1029 /* Like R_M32R_HI16_ULO, but referring to the GOT table entry for 1030 the symbol. */ 1031 HOWTO (R_M32R_GOT16_HI_ULO, /* type */ 1032 16, /* rightshift */ 1033 2, /* size (0 = byte, 1 = short, 2 = long) */ 1034 16, /* bitsize */ 1035 FALSE, /* pc_relative */ 1036 0, /* bitpos */ 1037 complain_overflow_dont, /* complain_on_overflow */ 1038 bfd_elf_generic_reloc, /* special_function */ 1039 "R_M32R_GOT16_HI_ULO", /* name */ 1040 FALSE, /* partial_inplace */ 1041 0x0000ffff, /* src_mask */ 1042 0x0000ffff, /* dst_mask */ 1043 FALSE), /* pcrel_offset */ 1044 1045 /* Like R_M32R_HI16_SLO, but referring to the GOT table entry for 1046 the symbol. */ 1047 HOWTO (R_M32R_GOT16_HI_SLO, /* type */ 1048 16, /* rightshift */ 1049 2, /* size (0 = byte, 1 = short, 2 = long) */ 1050 16, /* bitsize */ 1051 FALSE, /* pc_relative */ 1052 0, /* bitpos */ 1053 complain_overflow_dont, /* complain_on_overflow */ 1054 bfd_elf_generic_reloc, /* special_function */ 1055 "R_M32R_GOT16_HI_SLO", /* name */ 1056 FALSE, /* partial_inplace */ 1057 0x0000ffff, /* src_mask */ 1058 0x0000ffff, /* dst_mask */ 1059 FALSE), /* pcrel_offset */ 1060 1061 /* Like R_M32R_LO16, but referring to the GOT table entry for 1062 the symbol. */ 1063 HOWTO (R_M32R_GOT16_LO, /* type */ 1064 0, /* rightshift */ 1065 2, /* size (0 = byte, 1 = short, 2 = long) */ 1066 16, /* bitsize */ 1067 FALSE, /* pc_relative */ 1068 0, /* bitpos */ 1069 complain_overflow_dont, /* complain_on_overflow */ 1070 bfd_elf_generic_reloc, /* special_function */ 1071 "R_M32R_GOT16_LO", /* name */ 1072 FALSE, /* partial_inplace */ 1073 0x0000ffff, /* src_mask */ 1074 0x0000ffff, /* dst_mask */ 1075 FALSE), /* pcrel_offset */ 1076 1077 /* An PC Relative relocation used when setting PIC offset table register. 1078 Like R_M32R_HI16_ULO, but referring to the GOT table entry for 1079 the symbol. */ 1080 HOWTO (R_M32R_GOTPC_HI_ULO, /* type */ 1081 16, /* rightshift */ 1082 2, /* size (0 = byte, 1 = short, 2 = long) */ 1083 16, /* bitsize */ 1084 FALSE, /* pc_relative */ 1085 0, /* bitpos */ 1086 complain_overflow_dont, /* complain_on_overflow */ 1087 bfd_elf_generic_reloc, /* special_function */ 1088 "R_M32R_GOTPC_HI_ULO", /* name */ 1089 FALSE, /* partial_inplace */ 1090 0x0000ffff, /* src_mask */ 1091 0x0000ffff, /* dst_mask */ 1092 TRUE), /* pcrel_offset */ 1093 1094 /* An PC Relative relocation used when setting PIC offset table register. 1095 Like R_M32R_HI16_SLO, but referring to the GOT table entry for 1096 the symbol. */ 1097 HOWTO (R_M32R_GOTPC_HI_SLO, /* type */ 1098 16, /* rightshift */ 1099 2, /* size (0 = byte, 1 = short, 2 = long) */ 1100 16, /* bitsize */ 1101 FALSE, /* pc_relative */ 1102 0, /* bitpos */ 1103 complain_overflow_dont, /* complain_on_overflow */ 1104 bfd_elf_generic_reloc, /* special_function */ 1105 "R_M32R_GOTPC_HI_SLO", /* name */ 1106 FALSE, /* partial_inplace */ 1107 0x0000ffff, /* src_mask */ 1108 0x0000ffff, /* dst_mask */ 1109 TRUE), /* pcrel_offset */ 1110 1111 /* An PC Relative relocation used when setting PIC offset table register. 1112 Like R_M32R_LO16, but referring to the GOT table entry for 1113 the symbol. */ 1114 HOWTO (R_M32R_GOTPC_LO, /* type */ 1115 0, /* rightshift */ 1116 2, /* size (0 = byte, 1 = short, 2 = long) */ 1117 16, /* bitsize */ 1118 FALSE, /* pc_relative */ 1119 0, /* bitpos */ 1120 complain_overflow_dont, /* complain_on_overflow */ 1121 bfd_elf_generic_reloc, /* special_function */ 1122 "R_M32R_GOTPC_LO", /* name */ 1123 FALSE, /* partial_inplace */ 1124 0x0000ffff, /* src_mask */ 1125 0x0000ffff, /* dst_mask */ 1126 TRUE), /* pcrel_offset */ 1127 1128 HOWTO (R_M32R_GOTOFF_HI_ULO, /* type */ 1129 16, /* rightshift */ 1130 2, /* size (0 = byte, 1 = short, 2 = long) */ 1131 16, /* bitsize */ 1132 FALSE, /* pc_relative */ 1133 0, /* bitpos */ 1134 complain_overflow_dont, /* complain_on_overflow */ 1135 bfd_elf_generic_reloc, /* special_function */ 1136 "R_M32R_GOTOFF_HI_ULO",/* name */ 1137 FALSE, /* partial_inplace */ 1138 0x0000ffff, /* src_mask */ 1139 0x0000ffff, /* dst_mask */ 1140 FALSE), /* pcrel_offset */ 1141 1142 HOWTO (R_M32R_GOTOFF_HI_SLO, /* type */ 1143 16, /* rightshift */ 1144 2, /* size (0 = byte, 1 = short, 2 = long) */ 1145 16, /* bitsize */ 1146 FALSE, /* pc_relative */ 1147 0, /* bitpos */ 1148 complain_overflow_dont, /* complain_on_overflow */ 1149 bfd_elf_generic_reloc, /* special_function */ 1150 "R_M32R_GOTOFF_HI_SLO",/* name */ 1151 FALSE, /* partial_inplace */ 1152 0x0000ffff, /* src_mask */ 1153 0x0000ffff, /* dst_mask */ 1154 FALSE), /* pcrel_offset */ 1155 1156 HOWTO (R_M32R_GOTOFF_LO, /* type */ 1157 0, /* rightshift */ 1158 2, /* size (0 = byte, 1 = short, 2 = long) */ 1159 16, /* bitsize */ 1160 FALSE, /* pc_relative */ 1161 0, /* bitpos */ 1162 complain_overflow_dont, /* complain_on_overflow */ 1163 bfd_elf_generic_reloc, /* special_function */ 1164 "R_M32R_GOTOFF_LO", /* name */ 1165 FALSE, /* partial_inplace */ 1166 0x0000ffff, /* src_mask */ 1167 0x0000ffff, /* dst_mask */ 1168 FALSE), /* pcrel_offset */ 1169 }; 1170 1171 /* Map BFD reloc types to M32R ELF reloc types. */ 1172 1173 struct m32r_reloc_map 1174 { 1175 bfd_reloc_code_real_type bfd_reloc_val; 1176 unsigned char elf_reloc_val; 1177 }; 1178 1179 #ifdef USE_M32R_OLD_RELOC 1180 static const struct m32r_reloc_map m32r_reloc_map_old[] = 1181 { 1182 { BFD_RELOC_NONE, R_M32R_NONE }, 1183 { BFD_RELOC_16, R_M32R_16 }, 1184 { BFD_RELOC_32, R_M32R_32 }, 1185 { BFD_RELOC_M32R_24, R_M32R_24 }, 1186 { BFD_RELOC_M32R_10_PCREL, R_M32R_10_PCREL }, 1187 { BFD_RELOC_M32R_18_PCREL, R_M32R_18_PCREL }, 1188 { BFD_RELOC_M32R_26_PCREL, R_M32R_26_PCREL }, 1189 { BFD_RELOC_M32R_HI16_ULO, R_M32R_HI16_ULO }, 1190 { BFD_RELOC_M32R_HI16_SLO, R_M32R_HI16_SLO }, 1191 { BFD_RELOC_M32R_LO16, R_M32R_LO16 }, 1192 { BFD_RELOC_M32R_SDA16, R_M32R_SDA16 }, 1193 { BFD_RELOC_VTABLE_INHERIT, R_M32R_GNU_VTINHERIT }, 1194 { BFD_RELOC_VTABLE_ENTRY, R_M32R_GNU_VTENTRY }, 1195 }; 1196 #else 1197 static const struct m32r_reloc_map m32r_reloc_map[] = 1198 { 1199 { BFD_RELOC_NONE, R_M32R_NONE }, 1200 { BFD_RELOC_16, R_M32R_16_RELA }, 1201 { BFD_RELOC_32, R_M32R_32_RELA }, 1202 { BFD_RELOC_M32R_24, R_M32R_24_RELA }, 1203 { BFD_RELOC_M32R_10_PCREL, R_M32R_10_PCREL_RELA }, 1204 { BFD_RELOC_M32R_18_PCREL, R_M32R_18_PCREL_RELA }, 1205 { BFD_RELOC_M32R_26_PCREL, R_M32R_26_PCREL_RELA }, 1206 { BFD_RELOC_M32R_HI16_ULO, R_M32R_HI16_ULO_RELA }, 1207 { BFD_RELOC_M32R_HI16_SLO, R_M32R_HI16_SLO_RELA }, 1208 { BFD_RELOC_M32R_LO16, R_M32R_LO16_RELA }, 1209 { BFD_RELOC_M32R_SDA16, R_M32R_SDA16_RELA }, 1210 { BFD_RELOC_VTABLE_INHERIT, R_M32R_RELA_GNU_VTINHERIT }, 1211 { BFD_RELOC_VTABLE_ENTRY, R_M32R_RELA_GNU_VTENTRY }, 1212 { BFD_RELOC_32_PCREL, R_M32R_REL32 }, 1213 1214 { BFD_RELOC_M32R_GOT24, R_M32R_GOT24 }, 1215 { BFD_RELOC_M32R_26_PLTREL, R_M32R_26_PLTREL }, 1216 { BFD_RELOC_M32R_COPY, R_M32R_COPY }, 1217 { BFD_RELOC_M32R_GLOB_DAT, R_M32R_GLOB_DAT }, 1218 { BFD_RELOC_M32R_JMP_SLOT, R_M32R_JMP_SLOT }, 1219 { BFD_RELOC_M32R_RELATIVE, R_M32R_RELATIVE }, 1220 { BFD_RELOC_M32R_GOTOFF, R_M32R_GOTOFF }, 1221 { BFD_RELOC_M32R_GOTPC24, R_M32R_GOTPC24 }, 1222 { BFD_RELOC_M32R_GOT16_HI_ULO, R_M32R_GOT16_HI_ULO }, 1223 { BFD_RELOC_M32R_GOT16_HI_SLO, R_M32R_GOT16_HI_SLO }, 1224 { BFD_RELOC_M32R_GOT16_LO, R_M32R_GOT16_LO }, 1225 { BFD_RELOC_M32R_GOTPC_HI_ULO, R_M32R_GOTPC_HI_ULO }, 1226 { BFD_RELOC_M32R_GOTPC_HI_SLO, R_M32R_GOTPC_HI_SLO }, 1227 { BFD_RELOC_M32R_GOTPC_LO, R_M32R_GOTPC_LO }, 1228 { BFD_RELOC_M32R_GOTOFF_HI_ULO, R_M32R_GOTOFF_HI_ULO }, 1229 { BFD_RELOC_M32R_GOTOFF_HI_SLO, R_M32R_GOTOFF_HI_SLO }, 1230 { BFD_RELOC_M32R_GOTOFF_LO, R_M32R_GOTOFF_LO }, 1231 }; 1232 #endif 1233 1234 static reloc_howto_type * 1235 bfd_elf32_bfd_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED, 1236 bfd_reloc_code_real_type code) 1237 { 1238 unsigned int i; 1239 1240 #ifdef USE_M32R_OLD_RELOC 1241 for (i = 0; 1242 i < sizeof (m32r_reloc_map_old) / sizeof (struct m32r_reloc_map); 1243 i++) 1244 if (m32r_reloc_map_old[i].bfd_reloc_val == code) 1245 return &m32r_elf_howto_table[m32r_reloc_map_old[i].elf_reloc_val]; 1246 1247 #else /* ! USE_M32R_OLD_RELOC */ 1248 1249 for (i = 0; 1250 i < sizeof (m32r_reloc_map) / sizeof (struct m32r_reloc_map); 1251 i++) 1252 if (m32r_reloc_map[i].bfd_reloc_val == code) 1253 return &m32r_elf_howto_table[m32r_reloc_map[i].elf_reloc_val]; 1254 #endif 1255 1256 return NULL; 1257 } 1258 1259 static reloc_howto_type * 1260 bfd_elf32_bfd_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED, 1261 const char *r_name) 1262 { 1263 unsigned int i; 1264 1265 for (i = 0; 1266 i < sizeof (m32r_elf_howto_table) / sizeof (m32r_elf_howto_table[0]); 1267 i++) 1268 if (m32r_elf_howto_table[i].name != NULL 1269 && strcasecmp (m32r_elf_howto_table[i].name, r_name) == 0) 1270 return &m32r_elf_howto_table[i]; 1271 1272 return NULL; 1273 } 1274 1275 /* Set the howto pointer for an M32R ELF reloc. */ 1276 1277 static void 1278 m32r_info_to_howto_rel (bfd *abfd ATTRIBUTE_UNUSED, 1279 arelent *cache_ptr, 1280 Elf_Internal_Rela *dst) 1281 { 1282 unsigned int r_type; 1283 1284 r_type = ELF32_R_TYPE (dst->r_info); 1285 BFD_ASSERT (ELF32_R_TYPE(dst->r_info) <= (unsigned int) R_M32R_GNU_VTENTRY); 1286 cache_ptr->howto = &m32r_elf_howto_table[r_type]; 1287 } 1288 1289 static void 1290 m32r_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED, 1291 arelent *cache_ptr, 1292 Elf_Internal_Rela *dst) 1293 { 1294 BFD_ASSERT ((ELF32_R_TYPE(dst->r_info) == (unsigned int) R_M32R_NONE) 1295 || ((ELF32_R_TYPE(dst->r_info) > (unsigned int) R_M32R_GNU_VTENTRY) 1296 && (ELF32_R_TYPE(dst->r_info) < (unsigned int) R_M32R_max))); 1297 cache_ptr->howto = &m32r_elf_howto_table[ELF32_R_TYPE(dst->r_info)]; 1298 } 1299 1300 1301 /* Given a BFD section, try to locate the corresponding ELF section 1303 index. */ 1304 1305 static bfd_boolean 1306 _bfd_m32r_elf_section_from_bfd_section (bfd *abfd ATTRIBUTE_UNUSED, 1307 asection *sec, 1308 int *retval) 1309 { 1310 if (strcmp (bfd_get_section_name (abfd, sec), ".scommon") == 0) 1311 { 1312 *retval = SHN_M32R_SCOMMON; 1313 return TRUE; 1314 } 1315 return FALSE; 1316 } 1317 1318 /* M32R ELF uses two common sections. One is the usual one, and the other 1319 is for small objects. All the small objects are kept together, and then 1320 referenced via one register, which yields faster assembler code. It is 1321 up to the compiler to emit an instruction to load the register with 1322 _SDA_BASE. This is what we use for the small common section. This 1323 approach is copied from elf32-mips.c. */ 1324 static asection m32r_elf_scom_section; 1325 static asymbol m32r_elf_scom_symbol; 1326 static asymbol *m32r_elf_scom_symbol_ptr; 1327 1328 /* Handle the special M32R section numbers that a symbol may use. */ 1329 1330 static void 1331 _bfd_m32r_elf_symbol_processing (bfd *abfd ATTRIBUTE_UNUSED, asymbol *asym) 1332 { 1333 elf_symbol_type *elfsym = (elf_symbol_type *) asym; 1334 1335 switch (elfsym->internal_elf_sym.st_shndx) 1336 { 1337 case SHN_M32R_SCOMMON: 1338 if (m32r_elf_scom_section.name == NULL) 1339 { 1340 /* Initialize the small common section. */ 1341 m32r_elf_scom_section.name = ".scommon"; 1342 m32r_elf_scom_section.flags = SEC_IS_COMMON; 1343 m32r_elf_scom_section.output_section = &m32r_elf_scom_section; 1344 m32r_elf_scom_section.symbol = &m32r_elf_scom_symbol; 1345 m32r_elf_scom_section.symbol_ptr_ptr = &m32r_elf_scom_symbol_ptr; 1346 m32r_elf_scom_symbol.name = ".scommon"; 1347 m32r_elf_scom_symbol.flags = BSF_SECTION_SYM; 1348 m32r_elf_scom_symbol.section = &m32r_elf_scom_section; 1349 m32r_elf_scom_symbol_ptr = &m32r_elf_scom_symbol; 1350 } 1351 asym->section = &m32r_elf_scom_section; 1352 asym->value = elfsym->internal_elf_sym.st_size; 1353 break; 1354 } 1355 } 1356 1357 /* Hook called by the linker routine which adds symbols from an object 1358 file. We must handle the special M32R section numbers here. 1359 We also keep watching for whether we need to create the sdata special 1360 linker sections. */ 1361 1362 static bfd_boolean 1363 m32r_elf_add_symbol_hook (bfd *abfd, 1364 struct bfd_link_info *info, 1365 Elf_Internal_Sym *sym, 1366 const char **namep, 1367 flagword *flagsp ATTRIBUTE_UNUSED, 1368 asection **secp, 1369 bfd_vma *valp) 1370 { 1371 if (! info->relocatable 1372 && (*namep)[0] == '_' && (*namep)[1] == 'S' 1373 && strcmp (*namep, "_SDA_BASE_") == 0 1374 && is_elf_hash_table (info->hash)) 1375 { 1376 /* This is simpler than using _bfd_elf_create_linker_section 1377 (our needs are simpler than ppc's needs). Also 1378 _bfd_elf_create_linker_section currently has a bug where if a .sdata 1379 section already exists a new one is created that follows it which 1380 screws of _SDA_BASE_ address calcs because output_offset != 0. */ 1381 struct elf_link_hash_entry *h; 1382 struct bfd_link_hash_entry *bh; 1383 asection *s = bfd_get_section_by_name (abfd, ".sdata"); 1384 1385 /* The following code was cobbled from elf32-ppc.c and elflink.c. */ 1386 if (s == NULL) 1387 { 1388 flagword flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS 1389 | SEC_IN_MEMORY | SEC_LINKER_CREATED); 1390 1391 s = bfd_make_section_anyway_with_flags (abfd, ".sdata", 1392 flags); 1393 if (s == NULL) 1394 return FALSE; 1395 if (! bfd_set_section_alignment (abfd, s, 2)) 1396 return FALSE; 1397 } 1398 1399 bh = bfd_link_hash_lookup (info->hash, "_SDA_BASE_", 1400 FALSE, FALSE, FALSE); 1401 1402 if ((bh == NULL || bh->type == bfd_link_hash_undefined) 1403 && !(_bfd_generic_link_add_one_symbol (info, 1404 abfd, 1405 "_SDA_BASE_", 1406 BSF_GLOBAL, 1407 s, 1408 (bfd_vma) 32768, 1409 NULL, 1410 FALSE, 1411 get_elf_backend_data (abfd)->collect, 1412 &bh))) 1413 return FALSE; 1414 h = (struct elf_link_hash_entry *) bh; 1415 h->type = STT_OBJECT; 1416 } 1417 1418 switch (sym->st_shndx) 1419 { 1420 case SHN_M32R_SCOMMON: 1421 *secp = bfd_make_section_old_way (abfd, ".scommon"); 1422 (*secp)->flags |= SEC_IS_COMMON; 1423 *valp = sym->st_size; 1424 break; 1425 } 1426 1427 return TRUE; 1428 } 1429 1430 /* We have to figure out the SDA_BASE value, so that we can adjust the 1431 symbol value correctly. We look up the symbol _SDA_BASE_ in the output 1432 BFD. If we can't find it, we're stuck. We cache it in the ELF 1433 target data. We don't need to adjust the symbol value for an 1434 external symbol if we are producing relocatable output. */ 1435 1436 static bfd_reloc_status_type 1437 m32r_elf_final_sda_base (bfd *output_bfd, 1438 struct bfd_link_info *info, 1439 const char **error_message, 1440 bfd_vma *psb) 1441 { 1442 if (elf_gp (output_bfd) == 0) 1443 { 1444 struct bfd_link_hash_entry *h; 1445 1446 h = bfd_link_hash_lookup (info->hash, "_SDA_BASE_", FALSE, FALSE, TRUE); 1447 if (h != NULL && h->type == bfd_link_hash_defined) 1448 elf_gp (output_bfd) = (h->u.def.value 1449 + h->u.def.section->output_section->vma 1450 + h->u.def.section->output_offset); 1451 else 1452 { 1453 /* Only get the error once. */ 1454 *psb = elf_gp (output_bfd) = 4; 1455 *error_message = 1456 (const char *) _("SDA relocation when _SDA_BASE_ not defined"); 1457 return bfd_reloc_dangerous; 1458 } 1459 } 1460 *psb = elf_gp (output_bfd); 1461 return bfd_reloc_ok; 1462 } 1463 1464 /* Return size of a PLT entry. */ 1466 #define elf_m32r_sizeof_plt(info) PLT_ENTRY_SIZE 1467 1468 /* The m32r linker needs to keep track of the number of relocs that it 1469 decides to copy in check_relocs for each symbol. This is so that 1470 it can discard PC relative relocs if it doesn't need them when 1471 linking with -Bsymbolic. We store the information in a field 1472 extending the regular ELF linker hash table. */ 1473 1474 /* This structure keeps track of the number of PC relative relocs we 1475 have copied for a given symbol. */ 1476 1477 struct elf_m32r_pcrel_relocs_copied 1478 { 1479 /* Next section. */ 1480 struct elf_m32r_pcrel_relocs_copied *next; 1481 /* A section in dynobj. */ 1482 asection *section; 1483 /* Number of relocs copied in this section. */ 1484 bfd_size_type count; 1485 }; 1486 1487 /* The sh linker needs to keep track of the number of relocs that it 1488 decides to copy as dynamic relocs in check_relocs for each symbol. 1489 This is so that it can later discard them if they are found to be 1490 unnecessary. We store the information in a field extending the 1491 regular ELF linker hash table. */ 1492 1493 struct elf_m32r_dyn_relocs 1494 { 1495 struct elf_m32r_dyn_relocs *next; 1496 1497 /* The input section of the reloc. */ 1498 asection *sec; 1499 1500 /* Total number of relocs copied for the input section. */ 1501 bfd_size_type count; 1502 1503 /* Number of pc-relative relocs copied for the input section. */ 1504 bfd_size_type pc_count; 1505 }; 1506 1507 1508 /* m32r ELF linker hash entry. */ 1509 1510 struct elf_m32r_link_hash_entry 1511 { 1512 struct elf_link_hash_entry root; 1513 1514 /* Track dynamic relocs copied for this symbol. */ 1515 struct elf_m32r_dyn_relocs *dyn_relocs; 1516 }; 1517 1518 /* m32r ELF linker hash table. */ 1519 1520 struct elf_m32r_link_hash_table 1521 { 1522 struct elf_link_hash_table root; 1523 1524 /* Short-cuts to get to dynamic linker sections. */ 1525 asection *sgot; 1526 asection *sgotplt; 1527 asection *srelgot; 1528 asection *splt; 1529 asection *srelplt; 1530 asection *sdynbss; 1531 asection *srelbss; 1532 1533 /* Small local sym cache. */ 1534 struct sym_cache sym_cache; 1535 }; 1536 1537 /* Traverse an m32r ELF linker hash table. */ 1538 1539 #define m32r_elf_link_hash_traverse(table, func, info) \ 1540 (elf_link_hash_traverse \ 1541 (&(table)->root, \ 1542 (bfd_boolean (*) (struct elf_link_hash_entry *, void *)) (func), \ 1543 (info))) 1544 1545 /* Get the m32r ELF linker hash table from a link_info structure. */ 1546 1547 #define m32r_elf_hash_table(p) \ 1548 (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \ 1549 == M32R_ELF_DATA ? ((struct elf_m32r_link_hash_table *) ((p)->hash)) : NULL) 1550 1551 /* Create an entry in an m32r ELF linker hash table. */ 1552 1553 static struct bfd_hash_entry * 1554 m32r_elf_link_hash_newfunc (struct bfd_hash_entry *entry, 1555 struct bfd_hash_table *table, 1556 const char *string) 1557 { 1558 struct elf_m32r_link_hash_entry *ret = 1559 (struct elf_m32r_link_hash_entry *) entry; 1560 1561 /* Allocate the structure if it has not already been allocated by a 1562 subclass. */ 1563 if (ret == NULL) 1564 ret = bfd_hash_allocate (table, 1565 sizeof (struct elf_m32r_link_hash_entry)); 1566 if (ret == NULL) 1567 return NULL; 1568 1569 /* Call the allocation method of the superclass. */ 1570 ret = ((struct elf_m32r_link_hash_entry *) 1571 _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret, 1572 table, string)); 1573 if (ret != NULL) 1574 { 1575 struct elf_m32r_link_hash_entry *eh; 1576 1577 eh = (struct elf_m32r_link_hash_entry *) ret; 1578 eh->dyn_relocs = NULL; 1579 } 1580 1581 return (struct bfd_hash_entry *) ret; 1582 } 1583 1584 /* Create an m32r ELF linker hash table. */ 1585 1586 static struct bfd_link_hash_table * 1587 m32r_elf_link_hash_table_create (bfd *abfd) 1588 { 1589 struct elf_m32r_link_hash_table *ret; 1590 bfd_size_type amt = sizeof (struct elf_m32r_link_hash_table); 1591 1592 ret = bfd_zmalloc (amt); 1593 if (ret == NULL) 1594 return NULL; 1595 1596 if (!_bfd_elf_link_hash_table_init (&ret->root, abfd, 1597 m32r_elf_link_hash_newfunc, 1598 sizeof (struct elf_m32r_link_hash_entry), 1599 M32R_ELF_DATA)) 1600 { 1601 free (ret); 1602 return NULL; 1603 } 1604 1605 return &ret->root.root; 1606 } 1607 1608 /* Create .got, .gotplt, and .rela.got sections in DYNOBJ, and set up 1609 shortcuts to them in our hash table. */ 1610 1611 static bfd_boolean 1612 create_got_section (bfd *dynobj, struct bfd_link_info *info) 1613 { 1614 struct elf_m32r_link_hash_table *htab; 1615 1616 if (! _bfd_elf_create_got_section (dynobj, info)) 1617 return FALSE; 1618 1619 htab = m32r_elf_hash_table (info); 1620 if (htab == NULL) 1621 return FALSE; 1622 1623 htab->sgot = bfd_get_linker_section (dynobj, ".got"); 1624 htab->sgotplt = bfd_get_linker_section (dynobj, ".got.plt"); 1625 htab->srelgot = bfd_get_linker_section (dynobj, ".rela.got"); 1626 if (! htab->sgot || ! htab->sgotplt || ! htab->srelgot) 1627 abort (); 1628 1629 return TRUE; 1630 } 1631 1632 /* Create dynamic sections when linking against a dynamic object. */ 1633 1634 static bfd_boolean 1635 m32r_elf_create_dynamic_sections (bfd *abfd, struct bfd_link_info *info) 1636 { 1637 struct elf_m32r_link_hash_table *htab; 1638 flagword flags, pltflags; 1639 asection *s; 1640 const struct elf_backend_data *bed = get_elf_backend_data (abfd); 1641 int ptralign = 2; /* 32bit */ 1642 1643 htab = m32r_elf_hash_table (info); 1644 if (htab == NULL) 1645 return FALSE; 1646 1647 /* We need to create .plt, .rel[a].plt, .got, .got.plt, .dynbss, and 1648 .rel[a].bss sections. */ 1649 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY 1650 | SEC_LINKER_CREATED); 1651 1652 pltflags = flags; 1653 pltflags |= SEC_CODE; 1654 if (bed->plt_not_loaded) 1655 pltflags &= ~ (SEC_LOAD | SEC_HAS_CONTENTS); 1656 if (bed->plt_readonly) 1657 pltflags |= SEC_READONLY; 1658 1659 s = bfd_make_section_anyway_with_flags (abfd, ".plt", pltflags); 1660 htab->splt = s; 1661 if (s == NULL 1662 || ! bfd_set_section_alignment (abfd, s, bed->plt_alignment)) 1663 return FALSE; 1664 1665 if (bed->want_plt_sym) 1666 { 1667 /* Define the symbol _PROCEDURE_LINKAGE_TABLE_ at the start of the 1668 .plt section. */ 1669 struct bfd_link_hash_entry *bh = NULL; 1670 struct elf_link_hash_entry *h; 1671 1672 if (! (_bfd_generic_link_add_one_symbol 1673 (info, abfd, "_PROCEDURE_LINKAGE_TABLE_", BSF_GLOBAL, s, 1674 (bfd_vma) 0, NULL, FALSE, 1675 get_elf_backend_data (abfd)->collect, &bh))) 1676 return FALSE; 1677 h = (struct elf_link_hash_entry *) bh; 1678 h->def_regular = 1; 1679 h->type = STT_OBJECT; 1680 htab->root.hplt = h; 1681 1682 if (info->shared 1683 && ! bfd_elf_link_record_dynamic_symbol (info, h)) 1684 return FALSE; 1685 } 1686 1687 s = bfd_make_section_anyway_with_flags (abfd, 1688 bed->default_use_rela_p 1689 ? ".rela.plt" : ".rel.plt", 1690 flags | SEC_READONLY); 1691 htab->srelplt = s; 1692 if (s == NULL 1693 || ! bfd_set_section_alignment (abfd, s, ptralign)) 1694 return FALSE; 1695 1696 if (htab->sgot == NULL 1697 && ! create_got_section (abfd, info)) 1698 return FALSE; 1699 1700 if (bed->want_dynbss) 1701 { 1702 /* The .dynbss section is a place to put symbols which are defined 1703 by dynamic objects, are referenced by regular objects, and are 1704 not functions. We must allocate space for them in the process 1705 image and use a R_*_COPY reloc to tell the dynamic linker to 1706 initialize them at run time. The linker script puts the .dynbss 1707 section into the .bss section of the final image. */ 1708 s = bfd_make_section_anyway_with_flags (abfd, ".dynbss", 1709 SEC_ALLOC | SEC_LINKER_CREATED); 1710 htab->sdynbss = s; 1711 if (s == NULL) 1712 return FALSE; 1713 /* The .rel[a].bss section holds copy relocs. This section is not 1714 normally needed. We need to create it here, though, so that the 1715 linker will map it to an output section. We can't just create it 1716 only if we need it, because we will not know whether we need it 1717 until we have seen all the input files, and the first time the 1718 main linker code calls BFD after examining all the input files 1719 (size_dynamic_sections) the input sections have already been 1720 mapped to the output sections. If the section turns out not to 1721 be needed, we can discard it later. We will never need this 1722 section when generating a shared object, since they do not use 1723 copy relocs. */ 1724 if (! info->shared) 1725 { 1726 s = bfd_make_section_anyway_with_flags (abfd, 1727 (bed->default_use_rela_p 1728 ? ".rela.bss" : ".rel.bss"), 1729 flags | SEC_READONLY); 1730 htab->srelbss = s; 1731 if (s == NULL 1732 || ! bfd_set_section_alignment (abfd, s, ptralign)) 1733 return FALSE; 1734 } 1735 } 1736 1737 return TRUE; 1738 } 1739 1740 /* Copy the extra info we tack onto an elf_link_hash_entry. */ 1741 1742 static void 1743 m32r_elf_copy_indirect_symbol (struct bfd_link_info *info, 1744 struct elf_link_hash_entry *dir, 1745 struct elf_link_hash_entry *ind) 1746 { 1747 struct elf_m32r_link_hash_entry * edir; 1748 struct elf_m32r_link_hash_entry * eind; 1749 1750 edir = (struct elf_m32r_link_hash_entry *) dir; 1751 eind = (struct elf_m32r_link_hash_entry *) ind; 1752 1753 if (eind->dyn_relocs != NULL) 1754 { 1755 if (edir->dyn_relocs != NULL) 1756 { 1757 struct elf_m32r_dyn_relocs **pp; 1758 struct elf_m32r_dyn_relocs *p; 1759 1760 /* Add reloc counts against the indirect sym to the direct sym 1761 list. Merge any entries against the same section. */ 1762 for (pp = &eind->dyn_relocs; (p = *pp) != NULL;) 1763 { 1764 struct elf_m32r_dyn_relocs *q; 1765 1766 for (q = edir->dyn_relocs; q != NULL; q = q->next) 1767 if (q->sec == p->sec) 1768 { 1769 q->pc_count += p->pc_count; 1770 q->count += p->count; 1771 *pp = p->next; 1772 break; 1773 } 1774 if (q == NULL) 1775 pp = &p->next; 1776 } 1777 *pp = edir->dyn_relocs; 1778 } 1779 1780 edir->dyn_relocs = eind->dyn_relocs; 1781 eind->dyn_relocs = NULL; 1782 } 1783 1784 _bfd_elf_link_hash_copy_indirect (info, dir, ind); 1785 } 1786 1787 1788 /* Adjust a symbol defined by a dynamic object and referenced by a 1790 regular object. The current definition is in some section of the 1791 dynamic object, but we're not including those sections. We have to 1792 change the definition to something the rest of the link can 1793 understand. */ 1794 1795 static bfd_boolean 1796 m32r_elf_adjust_dynamic_symbol (struct bfd_link_info *info, 1797 struct elf_link_hash_entry *h) 1798 { 1799 struct elf_m32r_link_hash_table *htab; 1800 struct elf_m32r_link_hash_entry *eh; 1801 struct elf_m32r_dyn_relocs *p; 1802 bfd *dynobj; 1803 asection *s; 1804 1805 #ifdef DEBUG_PIC 1806 printf ("m32r_elf_adjust_dynamic_symbol()\n"); 1807 #endif 1808 1809 dynobj = elf_hash_table (info)->dynobj; 1810 1811 /* Make sure we know what is going on here. */ 1812 BFD_ASSERT (dynobj != NULL 1813 && (h->needs_plt 1814 || h->u.weakdef != NULL 1815 || (h->def_dynamic 1816 && h->ref_regular 1817 && !h->def_regular))); 1818 1819 /* If this is a function, put it in the procedure linkage table. We 1820 will fill in the contents of the procedure linkage table later, 1821 when we know the address of the .got section. */ 1822 if (h->type == STT_FUNC 1823 || h->needs_plt) 1824 { 1825 if (! info->shared 1826 && !h->def_dynamic 1827 && !h->ref_dynamic 1828 && h->root.type != bfd_link_hash_undefweak 1829 && h->root.type != bfd_link_hash_undefined) 1830 { 1831 /* This case can occur if we saw a PLT reloc in an input 1832 file, but the symbol was never referred to by a dynamic 1833 object. In such a case, we don't actually need to build 1834 a procedure linkage table, and we can just do a PCREL 1835 reloc instead. */ 1836 h->plt.offset = (bfd_vma) -1; 1837 h->needs_plt = 0; 1838 } 1839 1840 return TRUE; 1841 } 1842 else 1843 h->plt.offset = (bfd_vma) -1; 1844 1845 /* If this is a weak symbol, and there is a real definition, the 1846 processor independent code will have arranged for us to see the 1847 real definition first, and we can just use the same value. */ 1848 if (h->u.weakdef != NULL) 1849 { 1850 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined 1851 || h->u.weakdef->root.type == bfd_link_hash_defweak); 1852 h->root.u.def.section = h->u.weakdef->root.u.def.section; 1853 h->root.u.def.value = h->u.weakdef->root.u.def.value; 1854 return TRUE; 1855 } 1856 1857 /* This is a reference to a symbol defined by a dynamic object which 1858 is not a function. */ 1859 1860 /* If we are creating a shared library, we must presume that the 1861 only references to the symbol are via the global offset table. 1862 For such cases we need not do anything here; the relocations will 1863 be handled correctly by relocate_section. */ 1864 if (info->shared) 1865 return TRUE; 1866 1867 /* If there are no references to this symbol that do not use the 1868 GOT, we don't need to generate a copy reloc. */ 1869 if (!h->non_got_ref) 1870 return TRUE; 1871 1872 /* If -z nocopyreloc was given, we won't generate them either. */ 1873 if (info->nocopyreloc) 1874 { 1875 h->non_got_ref = 0; 1876 return TRUE; 1877 } 1878 1879 eh = (struct elf_m32r_link_hash_entry *) h; 1880 for (p = eh->dyn_relocs; p != NULL; p = p->next) 1881 { 1882 s = p->sec->output_section; 1883 if (s != NULL && (s->flags & (SEC_READONLY | SEC_HAS_CONTENTS)) != 0) 1884 break; 1885 } 1886 1887 /* If we didn't find any dynamic relocs in sections which needs the 1888 copy reloc, then we'll be keeping the dynamic relocs and avoiding 1889 the copy reloc. */ 1890 if (p == NULL) 1891 { 1892 h->non_got_ref = 0; 1893 return TRUE; 1894 } 1895 1896 /* We must allocate the symbol in our .dynbss section, which will 1897 become part of the .bss section of the executable. There will be 1898 an entry for this symbol in the .dynsym section. The dynamic 1899 object will contain position independent code, so all references 1900 from the dynamic object to this symbol will go through the global 1901 offset table. The dynamic linker will use the .dynsym entry to 1902 determine the address it must put in the global offset table, so 1903 both the dynamic object and the regular object will refer to the 1904 same memory location for the variable. */ 1905 1906 htab = m32r_elf_hash_table (info); 1907 if (htab == NULL) 1908 return FALSE; 1909 1910 s = htab->sdynbss; 1911 BFD_ASSERT (s != NULL); 1912 1913 /* We must generate a R_M32R_COPY reloc to tell the dynamic linker 1914 to copy the initial value out of the dynamic object and into the 1915 runtime process image. We need to remember the offset into the 1916 .rela.bss section we are going to use. */ 1917 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0) 1918 { 1919 asection *srel; 1920 1921 srel = htab->srelbss; 1922 BFD_ASSERT (srel != NULL); 1923 srel->size += sizeof (Elf32_External_Rela); 1924 h->needs_copy = 1; 1925 } 1926 1927 return _bfd_elf_adjust_dynamic_copy (h, s); 1928 } 1929 1930 /* Allocate space in .plt, .got and associated reloc sections for 1931 dynamic relocs. */ 1932 1933 static bfd_boolean 1934 allocate_dynrelocs (struct elf_link_hash_entry *h, void * inf) 1935 { 1936 struct bfd_link_info *info; 1937 struct elf_m32r_link_hash_table *htab; 1938 struct elf_m32r_link_hash_entry *eh; 1939 struct elf_m32r_dyn_relocs *p; 1940 1941 if (h->root.type == bfd_link_hash_indirect) 1942 return TRUE; 1943 1944 info = (struct bfd_link_info *) inf; 1945 htab = m32r_elf_hash_table (info); 1946 if (htab == NULL) 1947 return FALSE; 1948 1949 eh = (struct elf_m32r_link_hash_entry *) h; 1950 1951 if (htab->root.dynamic_sections_created 1952 && h->plt.refcount > 0) 1953 { 1954 /* Make sure this symbol is output as a dynamic symbol. 1955 Undefined weak syms won't yet be marked as dynamic. */ 1956 if (h->dynindx == -1 1957 && !h->forced_local) 1958 { 1959 if (! bfd_elf_link_record_dynamic_symbol (info, h)) 1960 return FALSE; 1961 } 1962 1963 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, info->shared, h)) 1964 { 1965 asection *s = htab->splt; 1966 1967 /* If this is the first .plt entry, make room for the special 1968 first entry. */ 1969 if (s->size == 0) 1970 s->size += PLT_ENTRY_SIZE; 1971 1972 h->plt.offset = s->size; 1973 1974 /* If this symbol is not defined in a regular file, and we are 1975 not generating a shared library, then set the symbol to this 1976 location in the .plt. This is required to make function 1977 pointers compare as equal between the normal executable and 1978 the shared library. */ 1979 if (! info->shared 1980 && !h->def_regular) 1981 { 1982 h->root.u.def.section = s; 1983 h->root.u.def.value = h->plt.offset; 1984 } 1985 1986 /* Make room for this entry. */ 1987 s->size += PLT_ENTRY_SIZE; 1988 1989 /* We also need to make an entry in the .got.plt section, which 1990 will be placed in the .got section by the linker script. */ 1991 htab->sgotplt->size += 4; 1992 1993 /* We also need to make an entry in the .rel.plt section. */ 1994 htab->srelplt->size += sizeof (Elf32_External_Rela); 1995 } 1996 else 1997 { 1998 h->plt.offset = (bfd_vma) -1; 1999 h->needs_plt = 0; 2000 } 2001 } 2002 else 2003 { 2004 h->plt.offset = (bfd_vma) -1; 2005 h->needs_plt = 0; 2006 } 2007 2008 if (h->got.refcount > 0) 2009 { 2010 asection *s; 2011 bfd_boolean dyn; 2012 2013 /* Make sure this symbol is output as a dynamic symbol. 2014 Undefined weak syms won't yet be marked as dynamic. */ 2015 if (h->dynindx == -1 2016 && !h->forced_local) 2017 { 2018 if (! bfd_elf_link_record_dynamic_symbol (info, h)) 2019 return FALSE; 2020 } 2021 2022 s = htab->sgot; 2023 2024 h->got.offset = s->size; 2025 s->size += 4; 2026 dyn = htab->root.dynamic_sections_created; 2027 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h)) 2028 htab->srelgot->size += sizeof (Elf32_External_Rela); 2029 } 2030 else 2031 h->got.offset = (bfd_vma) -1; 2032 2033 if (eh->dyn_relocs == NULL) 2034 return TRUE; 2035 2036 /* In the shared -Bsymbolic case, discard space allocated for 2037 dynamic pc-relative relocs against symbols which turn out to be 2038 defined in regular objects. For the normal shared case, discard 2039 space for pc-relative relocs that have become local due to symbol 2040 visibility changes. */ 2041 2042 if (info->shared) 2043 { 2044 if (h->def_regular 2045 && (h->forced_local 2046 || info->symbolic)) 2047 { 2048 struct elf_m32r_dyn_relocs **pp; 2049 2050 for (pp = &eh->dyn_relocs; (p = *pp) != NULL;) 2051 { 2052 p->count -= p->pc_count; 2053 p->pc_count = 0; 2054 if (p->count == 0) 2055 *pp = p->next; 2056 else 2057 pp = &p->next; 2058 } 2059 } 2060 2061 /* Also discard relocs on undefined weak syms with non-default 2062 visibility. */ 2063 if (eh->dyn_relocs != NULL 2064 && h->root.type == bfd_link_hash_undefweak) 2065 { 2066 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT) 2067 eh->dyn_relocs = NULL; 2068 2069 /* Make sure undefined weak symbols are output as a dynamic 2070 symbol in PIEs. */ 2071 else if (h->dynindx == -1 2072 && !h->forced_local) 2073 { 2074 if (! bfd_elf_link_record_dynamic_symbol (info, h)) 2075 return FALSE; 2076 } 2077 } 2078 } 2079 else 2080 { 2081 /* For the non-shared case, discard space for relocs against 2082 symbols which turn out to need copy relocs or are not 2083 dynamic. */ 2084 2085 if (!h->non_got_ref 2086 && ((h->def_dynamic 2087 && !h->def_regular) 2088 || (htab->root.dynamic_sections_created 2089 && (h->root.type == bfd_link_hash_undefweak 2090 || h->root.type == bfd_link_hash_undefined)))) 2091 { 2092 /* Make sure this symbol is output as a dynamic symbol. 2093 Undefined weak syms won't yet be marked as dynamic. */ 2094 if (h->dynindx == -1 2095 && !h->forced_local) 2096 { 2097 if (! bfd_elf_link_record_dynamic_symbol (info, h)) 2098 return FALSE; 2099 } 2100 2101 /* If that succeeded, we know we'll be keeping all the 2102 relocs. */ 2103 if (h->dynindx != -1) 2104 goto keep; 2105 } 2106 2107 eh->dyn_relocs = NULL; 2108 2109 keep: ; 2110 } 2111 2112 /* Finally, allocate space. */ 2113 for (p = eh->dyn_relocs; p != NULL; p = p->next) 2114 { 2115 asection *sreloc = elf_section_data (p->sec)->sreloc; 2116 sreloc->size += p->count * sizeof (Elf32_External_Rela); 2117 } 2118 2119 return TRUE; 2120 } 2121 2122 /* Find any dynamic relocs that apply to read-only sections. */ 2123 2124 static bfd_boolean 2125 readonly_dynrelocs (struct elf_link_hash_entry *h, void * inf) 2126 { 2127 struct elf_m32r_link_hash_entry *eh; 2128 struct elf_m32r_dyn_relocs *p; 2129 2130 eh = (struct elf_m32r_link_hash_entry *) h; 2131 for (p = eh->dyn_relocs; p != NULL; p = p->next) 2132 { 2133 asection *s = p->sec->output_section; 2134 2135 if (s != NULL && (s->flags & SEC_READONLY) != 0) 2136 { 2137 struct bfd_link_info *info = (struct bfd_link_info *) inf; 2138 2139 info->flags |= DF_TEXTREL; 2140 2141 /* Not an error, just cut short the traversal. */ 2142 return FALSE; 2143 } 2144 } 2145 return TRUE; 2146 } 2147 2148 /* Set the sizes of the dynamic sections. */ 2149 2150 static bfd_boolean 2151 m32r_elf_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED, 2152 struct bfd_link_info *info) 2153 { 2154 struct elf_m32r_link_hash_table *htab; 2155 bfd *dynobj; 2156 asection *s; 2157 bfd_boolean relocs; 2158 bfd *ibfd; 2159 2160 #ifdef DEBUG_PIC 2161 printf ("m32r_elf_size_dynamic_sections()\n"); 2162 #endif 2163 2164 htab = m32r_elf_hash_table (info); 2165 if (htab == NULL) 2166 return FALSE; 2167 2168 dynobj = htab->root.dynobj; 2169 BFD_ASSERT (dynobj != NULL); 2170 2171 if (htab->root.dynamic_sections_created) 2172 { 2173 /* Set the contents of the .interp section to the interpreter. */ 2174 if (info->executable) 2175 { 2176 s = bfd_get_linker_section (dynobj, ".interp"); 2177 BFD_ASSERT (s != NULL); 2178 s->size = sizeof ELF_DYNAMIC_INTERPRETER; 2179 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER; 2180 } 2181 } 2182 2183 /* Set up .got offsets for local syms, and space for local dynamic 2184 relocs. */ 2185 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) 2186 { 2187 bfd_signed_vma *local_got; 2188 bfd_signed_vma *end_local_got; 2189 bfd_size_type locsymcount; 2190 Elf_Internal_Shdr *symtab_hdr; 2191 asection *srel; 2192 2193 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour) 2194 continue; 2195 2196 for (s = ibfd->sections; s != NULL; s = s->next) 2197 { 2198 struct elf_m32r_dyn_relocs *p; 2199 2200 for (p = ((struct elf_m32r_dyn_relocs *) 2201 elf_section_data (s)->local_dynrel); 2202 p != NULL; 2203 p = p->next) 2204 { 2205 if (! bfd_is_abs_section (p->sec) 2206 && bfd_is_abs_section (p->sec->output_section)) 2207 { 2208 /* Input section has been discarded, either because 2209 it is a copy of a linkonce section or due to 2210 linker script /DISCARD/, so we'll be discarding 2211 the relocs too. */ 2212 } 2213 else if (p->count != 0) 2214 { 2215 srel = elf_section_data (p->sec)->sreloc; 2216 srel->size += p->count * sizeof (Elf32_External_Rela); 2217 if ((p->sec->output_section->flags & SEC_READONLY) != 0) 2218 info->flags |= DF_TEXTREL; 2219 } 2220 } 2221 } 2222 2223 local_got = elf_local_got_refcounts (ibfd); 2224 if (!local_got) 2225 continue; 2226 2227 symtab_hdr = &elf_tdata (ibfd)->symtab_hdr; 2228 locsymcount = symtab_hdr->sh_info; 2229 end_local_got = local_got + locsymcount; 2230 s = htab->sgot; 2231 srel = htab->srelgot; 2232 for (; local_got < end_local_got; ++local_got) 2233 { 2234 if (*local_got > 0) 2235 { 2236 *local_got = s->size; 2237 s->size += 4; 2238 if (info->shared) 2239 srel->size += sizeof (Elf32_External_Rela); 2240 } 2241 else 2242 *local_got = (bfd_vma) -1; 2243 } 2244 } 2245 2246 /* Allocate global sym .plt and .got entries, and space for global 2247 sym dynamic relocs. */ 2248 elf_link_hash_traverse (&htab->root, allocate_dynrelocs, info); 2249 2250 /* We now have determined the sizes of the various dynamic sections. 2251 Allocate memory for them. */ 2252 relocs = FALSE; 2253 for (s = dynobj->sections; s != NULL; s = s->next) 2254 { 2255 if ((s->flags & SEC_LINKER_CREATED) == 0) 2256 continue; 2257 2258 if (s == htab->splt 2259 || s == htab->sgot 2260 || s == htab->sgotplt 2261 || s == htab->sdynbss) 2262 { 2263 /* Strip this section if we don't need it; see the 2264 comment below. */ 2265 } 2266 else if (CONST_STRNEQ (bfd_get_section_name (dynobj, s), ".rela")) 2267 { 2268 if (s->size != 0 && s != htab->srelplt) 2269 relocs = TRUE; 2270 2271 /* We use the reloc_count field as a counter if we need 2272 to copy relocs into the output file. */ 2273 s->reloc_count = 0; 2274 } 2275 else 2276 /* It's not one of our sections, so don't allocate space. */ 2277 continue; 2278 2279 if (s->size == 0) 2280 { 2281 /* If we don't need this section, strip it from the 2282 output file. This is mostly to handle .rela.bss and 2283 .rela.plt. We must create both sections in 2284 create_dynamic_sections, because they must be created 2285 before the linker maps input sections to output 2286 sections. The linker does that before 2287 adjust_dynamic_symbol is called, and it is that 2288 function which decides whether anything needs to go 2289 into these sections. */ 2290 s->flags |= SEC_EXCLUDE; 2291 continue; 2292 } 2293 2294 if ((s->flags & SEC_HAS_CONTENTS) == 0) 2295 continue; 2296 2297 /* Allocate memory for the section contents. We use bfd_zalloc 2298 here in case unused entries are not reclaimed before the 2299 section's contents are written out. This should not happen, 2300 but this way if it does, we get a R_M32R_NONE reloc instead 2301 of garbage. */ 2302 s->contents = bfd_zalloc (dynobj, s->size); 2303 if (s->contents == NULL) 2304 return FALSE; 2305 } 2306 2307 if (htab->root.dynamic_sections_created) 2308 { 2309 /* Add some entries to the .dynamic section. We fill in the 2310 values later, in m32r_elf_finish_dynamic_sections, but we 2311 must add the entries now so that we get the correct size for 2312 the .dynamic section. The DT_DEBUG entry is filled in by the 2313 dynamic linker and used by the debugger. */ 2314 #define add_dynamic_entry(TAG, VAL) \ 2315 _bfd_elf_add_dynamic_entry (info, TAG, VAL) 2316 2317 if (info->executable) 2318 { 2319 if (! add_dynamic_entry (DT_DEBUG, 0)) 2320 return FALSE; 2321 } 2322 2323 if (htab->splt->size != 0) 2324 { 2325 if (! add_dynamic_entry (DT_PLTGOT, 0) 2326 || ! add_dynamic_entry (DT_PLTRELSZ, 0) 2327 || ! add_dynamic_entry (DT_PLTREL, DT_RELA) 2328 || ! add_dynamic_entry (DT_JMPREL, 0)) 2329 return FALSE; 2330 } 2331 2332 if (relocs) 2333 { 2334 if (! add_dynamic_entry (DT_RELA, 0) 2335 || ! add_dynamic_entry (DT_RELASZ, 0) 2336 || ! add_dynamic_entry (DT_RELAENT, 2337 sizeof (Elf32_External_Rela))) 2338 return FALSE; 2339 2340 /* If any dynamic relocs apply to a read-only section, 2341 then we need a DT_TEXTREL entry. */ 2342 if ((info->flags & DF_TEXTREL) == 0) 2343 elf_link_hash_traverse (&htab->root, readonly_dynrelocs, 2344 info); 2345 2346 if ((info->flags & DF_TEXTREL) != 0) 2347 { 2348 if (! add_dynamic_entry (DT_TEXTREL, 0)) 2349 return FALSE; 2350 } 2351 } 2352 } 2353 #undef add_dynamic_entry 2354 2355 return TRUE; 2356 } 2357 2358 /* Relocate an M32R/D ELF section. 2359 There is some attempt to make this function usable for many architectures, 2360 both for RELA and REL type relocs, if only to serve as a learning tool. 2361 2362 The RELOCATE_SECTION function is called by the new ELF backend linker 2363 to handle the relocations for a section. 2364 2365 The relocs are always passed as Rela structures; if the section 2366 actually uses Rel structures, the r_addend field will always be 2367 zero. 2368 2369 This function is responsible for adjust the section contents as 2370 necessary, and (if using Rela relocs and generating a 2371 relocatable output file) adjusting the reloc addend as 2372 necessary. 2373 2374 This function does not have to worry about setting the reloc 2375 address or the reloc symbol index. 2376 2377 LOCAL_SYMS is a pointer to the swapped in local symbols. 2378 2379 LOCAL_SECTIONS is an array giving the section in the input file 2380 corresponding to the st_shndx field of each local symbol. 2381 2382 The global hash table entry for the global symbols can be found 2383 via elf_sym_hashes (input_bfd). 2384 2385 When generating relocatable output, this function must handle 2386 STB_LOCAL/STT_SECTION symbols specially. The output symbol is 2387 going to be the section symbol corresponding to the output 2388 section, which means that the addend must be adjusted 2389 accordingly. */ 2390 2391 static bfd_boolean 2392 m32r_elf_relocate_section (bfd *output_bfd ATTRIBUTE_UNUSED, 2393 struct bfd_link_info *info, 2394 bfd *input_bfd, 2395 asection *input_section, 2396 bfd_byte *contents, 2397 Elf_Internal_Rela *relocs, 2398 Elf_Internal_Sym *local_syms, 2399 asection **local_sections) 2400 { 2401 Elf_Internal_Shdr *symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; 2402 struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (input_bfd); 2403 Elf_Internal_Rela *rel, *relend; 2404 /* Assume success. */ 2405 bfd_boolean ret = TRUE; 2406 struct elf_m32r_link_hash_table *htab = m32r_elf_hash_table (info); 2407 bfd *dynobj; 2408 bfd_vma *local_got_offsets; 2409 asection *sgot, *splt, *sreloc; 2410 bfd_vma high_address = bfd_get_section_limit (input_bfd, input_section); 2411 2412 if (htab == NULL) 2413 return FALSE; 2414 2415 dynobj = htab->root.dynobj; 2416 local_got_offsets = elf_local_got_offsets (input_bfd); 2417 2418 sgot = htab->sgot; 2419 splt = htab->splt; 2420 sreloc = NULL; 2421 2422 rel = relocs; 2423 relend = relocs + input_section->reloc_count; 2424 for (; rel < relend; rel++) 2425 { 2426 int r_type; 2427 reloc_howto_type *howto; 2428 unsigned long r_symndx; 2429 struct elf_link_hash_entry *h; 2430 /* We can't modify r_addend here as elf_link_input_bfd has an assert to 2431 ensure it's zero (we use REL relocs, not RELA). Therefore this 2432 should be assigning zero to `addend', but for clarity we use 2433 `r_addend'. */ 2434 bfd_vma addend = rel->r_addend; 2435 bfd_vma offset = rel->r_offset; 2436 bfd_vma relocation; 2437 Elf_Internal_Sym *sym; 2438 asection *sec; 2439 const char *sym_name; 2440 bfd_reloc_status_type r; 2441 const char *errmsg = NULL; 2442 bfd_boolean use_rel = FALSE; 2443 2444 h = NULL; 2445 r_type = ELF32_R_TYPE (rel->r_info); 2446 if (r_type < 0 || r_type >= (int) R_M32R_max) 2447 { 2448 (*_bfd_error_handler) (_("%B: unknown relocation type %d"), 2449 input_bfd, 2450 (int) r_type); 2451 bfd_set_error (bfd_error_bad_value); 2452 ret = FALSE; 2453 continue; 2454 } 2455 2456 if ( r_type == R_M32R_GNU_VTENTRY 2457 || r_type == R_M32R_GNU_VTINHERIT 2458 || r_type == R_M32R_NONE 2459 || r_type == R_M32R_RELA_GNU_VTENTRY 2460 || r_type == R_M32R_RELA_GNU_VTINHERIT) 2461 continue; 2462 2463 if (r_type <= R_M32R_GNU_VTENTRY) 2464 use_rel = TRUE; 2465 2466 howto = m32r_elf_howto_table + r_type; 2467 r_symndx = ELF32_R_SYM (rel->r_info); 2468 2469 sym = NULL; 2470 sec = NULL; 2471 h = NULL; 2472 2473 if (r_symndx < symtab_hdr->sh_info) 2474 { 2475 /* Local symbol. */ 2476 sym = local_syms + r_symndx; 2477 sec = local_sections[r_symndx]; 2478 sym_name = "<local symbol>"; 2479 2480 if (!use_rel) 2481 { 2482 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel); 2483 addend = rel->r_addend; 2484 } 2485 else 2486 { 2487 relocation = (sec->output_section->vma 2488 + sec->output_offset 2489 + sym->st_value); 2490 } 2491 } 2492 else 2493 { 2494 /* External symbol. */ 2495 relocation = 0; 2496 2497 h = sym_hashes[r_symndx - symtab_hdr->sh_info]; 2498 2499 if (info->wrap_hash != NULL 2500 && (input_section->flags & SEC_DEBUGGING) != 0) 2501 h = ((struct elf_link_hash_entry *) 2502 unwrap_hash_lookup (info, input_bfd, &h->root)); 2503 2504 while (h->root.type == bfd_link_hash_indirect 2505 || h->root.type == bfd_link_hash_warning) 2506 h = (struct elf_link_hash_entry *) h->root.u.i.link; 2507 sym_name = h->root.root.string; 2508 2509 if (h->root.type == bfd_link_hash_defined 2510 || h->root.type == bfd_link_hash_defweak) 2511 { 2512 bfd_boolean dyn; 2513 sec = h->root.u.def.section; 2514 2515 dyn = htab->root.dynamic_sections_created; 2516 sec = h->root.u.def.section; 2517 if (r_type == R_M32R_GOTPC24 2518 || (r_type == R_M32R_GOTPC_HI_ULO 2519 || r_type == R_M32R_GOTPC_HI_SLO 2520 || r_type == R_M32R_GOTPC_LO) 2521 || (r_type == R_M32R_26_PLTREL 2522 && h->plt.offset != (bfd_vma) -1) 2523 || ((r_type == R_M32R_GOT24 2524 || r_type == R_M32R_GOT16_HI_ULO 2525 || r_type == R_M32R_GOT16_HI_SLO 2526 || r_type == R_M32R_GOT16_LO) 2527 && WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 2528 info->shared, h) 2529 && (! info->shared 2530 || (! info->symbolic && h->dynindx != -1) 2531 || !h->def_regular)) 2532 || (info->shared 2533 && ((! info->symbolic && h->dynindx != -1) 2534 || !h->def_regular) 2535 && (((r_type == R_M32R_16_RELA 2536 || r_type == R_M32R_32_RELA 2537 || r_type == R_M32R_24_RELA 2538 || r_type == R_M32R_HI16_ULO_RELA 2539 || r_type == R_M32R_HI16_SLO_RELA 2540 || r_type == R_M32R_LO16_RELA) 2541 && !h->forced_local) 2542 || r_type == R_M32R_REL32 2543 || r_type == R_M32R_10_PCREL_RELA 2544 || r_type == R_M32R_18_PCREL_RELA 2545 || r_type == R_M32R_26_PCREL_RELA) 2546 && ((input_section->flags & SEC_ALLOC) != 0 2547 /* DWARF will emit R_M32R_16(24,32) relocations 2548 in its sections against symbols defined 2549 externally in shared libraries. We can't do 2550 anything with them here. */ 2551 || ((input_section->flags & SEC_DEBUGGING) != 0 2552 && h->def_dynamic)))) 2553 { 2554 /* In these cases, we don't need the relocation 2555 value. We check specially because in some 2556 obscure cases sec->output_section will be NULL. */ 2557 } 2558 else if (sec->output_section != NULL) 2559 relocation = (h->root.u.def.value 2560 + sec->output_section->vma 2561 + sec->output_offset); 2562 else if (!info->relocatable 2563 && (_bfd_elf_section_offset (output_bfd, info, 2564 input_section, 2565 rel->r_offset) 2566 != (bfd_vma) -1)) 2567 { 2568 (*_bfd_error_handler) 2569 (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"), 2570 input_bfd, 2571 input_section, 2572 (long) rel->r_offset, 2573 howto->name, 2574 h->root.root.string); 2575 } 2576 } 2577 else if (h->root.type == bfd_link_hash_undefweak) 2578 ; 2579 else if (info->unresolved_syms_in_objects == RM_IGNORE 2580 && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT) 2581 ; 2582 else if (!info->relocatable) 2583 { 2584 if (! ((*info->callbacks->undefined_symbol) 2585 (info, h->root.root.string, input_bfd, 2586 input_section, offset, 2587 (info->unresolved_syms_in_objects == RM_GENERATE_ERROR 2588 || ELF_ST_VISIBILITY (h->other))))) 2589 return FALSE; 2590 } 2591 } 2592 2593 if (sec != NULL && discarded_section (sec)) 2594 RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section, 2595 rel, 1, relend, howto, 0, contents); 2596 2597 if (info->relocatable && !use_rel) 2598 { 2599 /* This is a relocatable link. We don't have to change 2600 anything, unless the reloc is against a section symbol, 2601 in which case we have to adjust according to where the 2602 section symbol winds up in the output section. */ 2603 if (sym != NULL && ELF_ST_TYPE (sym->st_info) == STT_SECTION) 2604 rel->r_addend += sec->output_offset; 2605 continue; 2606 } 2607 2608 if (info->relocatable && use_rel) 2609 { 2610 /* This is a relocatable link. We don't have to change 2611 anything, unless the reloc is against a section symbol, 2612 in which case we have to adjust according to where the 2613 section symbol winds up in the output section. */ 2614 if (sym == NULL || ELF_ST_TYPE (sym->st_info) != STT_SECTION) 2615 continue; 2616 2617 addend += sec->output_offset; 2618 2619 /* If partial_inplace, we need to store any additional addend 2620 back in the section. */ 2621 if (! howto->partial_inplace) 2622 continue; 2623 /* ??? Here is a nice place to call a special_function 2624 like handler. */ 2625 if (r_type != R_M32R_HI16_SLO && r_type != R_M32R_HI16_ULO) 2626 r = _bfd_relocate_contents (howto, input_bfd, 2627 addend, contents + offset); 2628 else 2629 { 2630 Elf_Internal_Rela *lorel; 2631 2632 /* We allow an arbitrary number of HI16 relocs before the 2633 LO16 reloc. This permits gcc to emit the HI and LO relocs 2634 itself. */ 2635 for (lorel = rel + 1; 2636 (lorel < relend 2637 && (ELF32_R_TYPE (lorel->r_info) == R_M32R_HI16_SLO 2638 || ELF32_R_TYPE (lorel->r_info) == R_M32R_HI16_ULO)); 2639 lorel++) 2640 continue; 2641 if (lorel < relend 2642 && ELF32_R_TYPE (lorel->r_info) == R_M32R_LO16) 2643 { 2644 m32r_elf_relocate_hi16 (input_bfd, r_type, rel, lorel, 2645 contents, addend); 2646 r = bfd_reloc_ok; 2647 } 2648 else 2649 r = _bfd_relocate_contents (howto, input_bfd, 2650 addend, contents + offset); 2651 } 2652 } 2653 else 2654 { 2655 /* Sanity check the address. */ 2656 if (offset > high_address) 2657 { 2658 r = bfd_reloc_outofrange; 2659 goto check_reloc; 2660 } 2661 2662 switch ((int) r_type) 2663 { 2664 case R_M32R_GOTOFF: 2665 /* Relocation is relative to the start of the global offset 2666 table (for ld24 rx, #uimm24). eg access at label+addend 2667 2668 ld24 rx. #label@GOTOFF + addend 2669 sub rx, r12. */ 2670 2671 BFD_ASSERT (sgot != NULL); 2672 2673 relocation = -(relocation - sgot->output_section->vma); 2674 rel->r_addend = -rel->r_addend; 2675 break; 2676 2677 case R_M32R_GOTOFF_HI_ULO: 2678 case R_M32R_GOTOFF_HI_SLO: 2679 case R_M32R_GOTOFF_LO: 2680 BFD_ASSERT (sgot != NULL); 2681 2682 relocation -= sgot->output_section->vma; 2683 2684 if ((r_type == R_M32R_GOTOFF_HI_SLO) 2685 && ((relocation + rel->r_addend) & 0x8000)) 2686 rel->r_addend += 0x10000; 2687 break; 2688 2689 case R_M32R_GOTPC24: 2690 /* .got(_GLOBAL_OFFSET_TABLE_) - pc relocation 2691 ld24 rx,#_GLOBAL_OFFSET_TABLE_ 2692 */ 2693 relocation = sgot->output_section->vma; 2694 break; 2695 2696 case R_M32R_GOTPC_HI_ULO: 2697 case R_M32R_GOTPC_HI_SLO: 2698 case R_M32R_GOTPC_LO: 2699 { 2700 /* .got(_GLOBAL_OFFSET_TABLE_) - pc relocation 2701 bl .+4 2702 seth rx,#high(_GLOBAL_OFFSET_TABLE_) 2703 or3 rx,rx,#low(_GLOBAL_OFFSET_TABLE_ +4) 2704 or 2705 bl .+4 2706 seth rx,#shigh(_GLOBAL_OFFSET_TABLE_) 2707 add3 rx,rx,#low(_GLOBAL_OFFSET_TABLE_ +4) 2708 */ 2709 relocation = sgot->output_section->vma; 2710 relocation -= (input_section->output_section->vma 2711 + input_section->output_offset 2712 + rel->r_offset); 2713 if ((r_type == R_M32R_GOTPC_HI_SLO) 2714 && ((relocation + rel->r_addend) & 0x8000)) 2715 rel->r_addend += 0x10000; 2716 2717 break; 2718 } 2719 case R_M32R_GOT16_HI_ULO: 2720 case R_M32R_GOT16_HI_SLO: 2721 case R_M32R_GOT16_LO: 2722 /* Fall through. */ 2723 case R_M32R_GOT24: 2724 /* Relocation is to the entry for this symbol in the global 2725 offset table. */ 2726 BFD_ASSERT (sgot != NULL); 2727 2728 if (h != NULL) 2729 { 2730 bfd_boolean dyn; 2731 bfd_vma off; 2732 2733 off = h->got.offset; 2734 BFD_ASSERT (off != (bfd_vma) -1); 2735 2736 dyn = htab->root.dynamic_sections_created; 2737 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h) 2738 || (info->shared 2739 && (info->symbolic 2740 || h->dynindx == -1 2741 || h->forced_local) 2742 && h->def_regular)) 2743 { 2744 /* This is actually a static link, or it is a 2745 -Bsymbolic link and the symbol is defined 2746 locally, or the symbol was forced to be local 2747 because of a version file. We must initialize 2748 this entry in the global offset table. Since the 2749 offset must always be a multiple of 4, we use the 2750 least significant bit to record whether we have 2751 initialized it already. 2752 2753 When doing a dynamic link, we create a .rela.got 2754 relocation entry to initialize the value. This 2755 is done in the finish_dynamic_symbol routine. */ 2756 if ((off & 1) != 0) 2757 off &= ~1; 2758 else 2759 { 2760 bfd_put_32 (output_bfd, relocation, 2761 sgot->contents + off); 2762 h->got.offset |= 1; 2763 } 2764 } 2765 2766 relocation = sgot->output_offset + off; 2767 } 2768 else 2769 { 2770 bfd_vma off; 2771 bfd_byte *loc; 2772 2773 BFD_ASSERT (local_got_offsets != NULL 2774 && local_got_offsets[r_symndx] != (bfd_vma) -1); 2775 2776 off = local_got_offsets[r_symndx]; 2777 2778 /* The offset must always be a multiple of 4. We use 2779 the least significant bit to record whether we have 2780 already processed this entry. */ 2781 if ((off & 1) != 0) 2782 off &= ~1; 2783 else 2784 { 2785 bfd_put_32 (output_bfd, relocation, sgot->contents + off); 2786 2787 if (info->shared) 2788 { 2789 asection *srelgot; 2790 Elf_Internal_Rela outrel; 2791 2792 /* We need to generate a R_M32R_RELATIVE reloc 2793 for the dynamic linker. */ 2794 srelgot = bfd_get_linker_section (dynobj, 2795 ".rela.got"); 2796 BFD_ASSERT (srelgot != NULL); 2797 2798 outrel.r_offset = (sgot->output_section->vma 2799 + sgot->output_offset 2800 + off); 2801 outrel.r_info = ELF32_R_INFO (0, R_M32R_RELATIVE); 2802 outrel.r_addend = relocation; 2803 loc = srelgot->contents; 2804 loc += srelgot->reloc_count * sizeof (Elf32_External_Rela); 2805 bfd_elf32_swap_reloca_out (output_bfd, &outrel,loc); 2806 ++srelgot->reloc_count; 2807 } 2808 2809 local_got_offsets[r_symndx] |= 1; 2810 } 2811 2812 relocation = sgot->output_offset + off; 2813 } 2814 if ((r_type == R_M32R_GOT16_HI_SLO) 2815 && ((relocation + rel->r_addend) & 0x8000)) 2816 rel->r_addend += 0x10000; 2817 2818 break; 2819 2820 case R_M32R_26_PLTREL: 2821 /* Relocation is to the entry for this symbol in the 2822 procedure linkage table. */ 2823 2824 /* The native assembler will generate a 26_PLTREL reloc 2825 for a local symbol if you assemble a call from one 2826 section to another when using -K pic. */ 2827 if (h == NULL) 2828 break; 2829 2830 if (h->forced_local) 2831 break; 2832 2833 if (h->plt.offset == (bfd_vma) -1) 2834 /* We didn't make a PLT entry for this symbol. This 2835 happens when statically linking PIC code, or when 2836 using -Bsymbolic. */ 2837 break; 2838 2839 relocation = (splt->output_section->vma 2840 + splt->output_offset 2841 + h->plt.offset); 2842 break; 2843 2844 case R_M32R_HI16_SLO_RELA: 2845 if ((relocation + rel->r_addend) & 0x8000) 2846 rel->r_addend += 0x10000; 2847 /* Fall through. */ 2848 2849 case R_M32R_16_RELA: 2850 case R_M32R_24_RELA: 2851 case R_M32R_32_RELA: 2852 case R_M32R_REL32: 2853 case R_M32R_10_PCREL_RELA: 2854 case R_M32R_18_PCREL_RELA: 2855 case R_M32R_26_PCREL_RELA: 2856 case R_M32R_HI16_ULO_RELA: 2857 case R_M32R_LO16_RELA: 2858 if (info->shared 2859 && r_symndx != STN_UNDEF 2860 && (input_section->flags & SEC_ALLOC) != 0 2861 && (( r_type != R_M32R_10_PCREL_RELA 2862 && r_type != R_M32R_18_PCREL_RELA 2863 && r_type != R_M32R_26_PCREL_RELA 2864 && r_type != R_M32R_REL32) 2865 || (h != NULL 2866 && h->dynindx != -1 2867 && (! info->symbolic 2868 || !h->def_regular)))) 2869 { 2870 Elf_Internal_Rela outrel; 2871 bfd_boolean skip, relocate; 2872 bfd_byte *loc; 2873 2874 /* When generating a shared object, these relocations 2875 are copied into the output file to be resolved at run 2876 time. */ 2877 if (sreloc == NULL) 2878 { 2879 sreloc = _bfd_elf_get_dynamic_reloc_section 2880 (input_bfd, input_section, /*rela?*/ TRUE); 2881 if (sreloc == NULL) 2882 return FALSE; 2883 } 2884 2885 skip = FALSE; 2886 relocate = FALSE; 2887 2888 outrel.r_offset = _bfd_elf_section_offset (output_bfd, 2889 info, 2890 input_section, 2891 rel->r_offset); 2892 if (outrel.r_offset == (bfd_vma) -1) 2893 skip = TRUE; 2894 else if (outrel.r_offset == (bfd_vma) -2) 2895 skip = relocate = TRUE; 2896 outrel.r_offset += (input_section->output_section->vma 2897 + input_section->output_offset); 2898 2899 if (skip) 2900 memset (&outrel, 0, sizeof outrel); 2901 else if ( r_type == R_M32R_10_PCREL_RELA 2902 || r_type == R_M32R_18_PCREL_RELA 2903 || r_type == R_M32R_26_PCREL_RELA 2904 || r_type == R_M32R_REL32) 2905 { 2906 BFD_ASSERT (h != NULL && h->dynindx != -1); 2907 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type); 2908 outrel.r_addend = rel->r_addend; 2909 } 2910 else 2911 { 2912 /* h->dynindx may be -1 if this symbol was marked to 2913 become local. */ 2914 if (h == NULL 2915 || ((info->symbolic || h->dynindx == -1) 2916 && h->def_regular)) 2917 { 2918 relocate = TRUE; 2919 outrel.r_info = ELF32_R_INFO (0, R_M32R_RELATIVE); 2920 outrel.r_addend = relocation + rel->r_addend; 2921 } 2922 else 2923 { 2924 BFD_ASSERT (h->dynindx != -1); 2925 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type); 2926 outrel.r_addend = relocation + rel->r_addend; 2927 } 2928 } 2929 2930 loc = sreloc->contents; 2931 loc += sreloc->reloc_count * sizeof (Elf32_External_Rela); 2932 bfd_elf32_swap_reloca_out (output_bfd, &outrel,loc); 2933 ++sreloc->reloc_count; 2934 2935 /* If this reloc is against an external symbol, we do 2936 not want to fiddle with the addend. Otherwise, we 2937 need to include the symbol value so that it becomes 2938 an addend for the dynamic reloc. */ 2939 if (! relocate) 2940 continue; 2941 break; 2942 } 2943 else if (r_type != R_M32R_10_PCREL_RELA) 2944 break; 2945 /* Fall through. */ 2946 2947 case (int) R_M32R_10_PCREL : 2948 r = m32r_elf_do_10_pcrel_reloc (input_bfd, howto, input_section, 2949 contents, offset, 2950 sec, relocation, addend); 2951 goto check_reloc; 2952 2953 case (int) R_M32R_HI16_SLO : 2954 case (int) R_M32R_HI16_ULO : 2955 { 2956 Elf_Internal_Rela *lorel; 2957 2958 /* We allow an arbitrary number of HI16 relocs before the 2959 LO16 reloc. This permits gcc to emit the HI and LO relocs 2960 itself. */ 2961 for (lorel = rel + 1; 2962 (lorel < relend 2963 && (ELF32_R_TYPE (lorel->r_info) == R_M32R_HI16_SLO 2964 || ELF32_R_TYPE (lorel->r_info) == R_M32R_HI16_ULO)); 2965 lorel++) 2966 continue; 2967 if (lorel < relend 2968 && ELF32_R_TYPE (lorel->r_info) == R_M32R_LO16) 2969 { 2970 m32r_elf_relocate_hi16 (input_bfd, r_type, rel, lorel, 2971 contents, relocation + addend); 2972 r = bfd_reloc_ok; 2973 } 2974 else 2975 r = _bfd_final_link_relocate (howto, input_bfd, input_section, 2976 contents, offset, 2977 relocation, addend); 2978 } 2979 2980 goto check_reloc; 2981 2982 case (int) R_M32R_SDA16_RELA: 2983 case (int) R_M32R_SDA16 : 2984 { 2985 const char *name; 2986 2987 BFD_ASSERT (sec != NULL); 2988 name = bfd_get_section_name (sec->owner, sec); 2989 2990 if ( strcmp (name, ".sdata") == 0 2991 || strcmp (name, ".sbss") == 0 2992 || strcmp (name, ".scommon") == 0) 2993 { 2994 bfd_vma sda_base; 2995 bfd *out_bfd = sec->output_section->owner; 2996 2997 r = m32r_elf_final_sda_base (out_bfd, info, 2998 &errmsg, 2999 &sda_base); 3000 if (r != bfd_reloc_ok) 3001 { 3002 ret = FALSE; 3003 goto check_reloc; 3004 } 3005 3006 /* At this point `relocation' contains the object's 3007 address. */ 3008 relocation -= sda_base; 3009 /* Now it contains the offset from _SDA_BASE_. */ 3010 } 3011 else 3012 { 3013 (*_bfd_error_handler) 3014 (_("%B: The target (%s) of an %s relocation is in the wrong section (%A)"), 3015 input_bfd, 3016 sec, 3017 sym_name, 3018 m32r_elf_howto_table[(int) r_type].name); 3019 /*bfd_set_error (bfd_error_bad_value); ??? why? */ 3020 ret = FALSE; 3021 continue; 3022 } 3023 } 3024 /* Fall through. */ 3025 3026 default : /* OLD_M32R_RELOC */ 3027 3028 r = _bfd_final_link_relocate (howto, input_bfd, input_section, 3029 contents, offset, 3030 relocation, addend); 3031 goto check_reloc; 3032 } 3033 3034 r = _bfd_final_link_relocate (howto, input_bfd, input_section, 3035 contents, rel->r_offset, 3036 relocation, rel->r_addend); 3037 3038 } 3039 3040 check_reloc: 3041 3042 if (r != bfd_reloc_ok) 3043 { 3044 /* FIXME: This should be generic enough to go in a utility. */ 3045 const char *name; 3046 3047 if (h != NULL) 3048 name = h->root.root.string; 3049 else 3050 { 3051 name = (bfd_elf_string_from_elf_section 3052 (input_bfd, symtab_hdr->sh_link, sym->st_name)); 3053 if (name == NULL || *name == '\0') 3054 name = bfd_section_name (input_bfd, sec); 3055 } 3056 3057 if (errmsg != NULL) 3058 goto common_error; 3059 3060 switch (r) 3061 { 3062 case bfd_reloc_overflow: 3063 if (! ((*info->callbacks->reloc_overflow) 3064 (info, (h ? &h->root : NULL), name, howto->name, 3065 (bfd_vma) 0, input_bfd, input_section, offset))) 3066 return FALSE; 3067 break; 3068 3069 case bfd_reloc_undefined: 3070 if (! ((*info->callbacks->undefined_symbol) 3071 (info, name, input_bfd, input_section, 3072 offset, TRUE))) 3073 return FALSE; 3074 break; 3075 3076 case bfd_reloc_outofrange: 3077 errmsg = _("internal error: out of range error"); 3078 goto common_error; 3079 3080 case bfd_reloc_notsupported: 3081 errmsg = _("internal error: unsupported relocation error"); 3082 goto common_error; 3083 3084 case bfd_reloc_dangerous: 3085 errmsg = _("internal error: dangerous error"); 3086 goto common_error; 3087 3088 default: 3089 errmsg = _("internal error: unknown error"); 3090 /* fall through */ 3091 3092 common_error: 3093 if (!((*info->callbacks->warning) 3094 (info, errmsg, name, input_bfd, input_section, 3095 offset))) 3096 return FALSE; 3097 break; 3098 } 3099 } 3100 } 3101 3102 return ret; 3103 } 3104 3105 /* Finish up dynamic symbol handling. We set the contents of various 3106 dynamic sections here. */ 3107 3108 static bfd_boolean 3109 m32r_elf_finish_dynamic_symbol (bfd *output_bfd, 3110 struct bfd_link_info *info, 3111 struct elf_link_hash_entry *h, 3112 Elf_Internal_Sym *sym) 3113 { 3114 struct elf_m32r_link_hash_table *htab; 3115 bfd_byte *loc; 3116 3117 #ifdef DEBUG_PIC 3118 printf ("m32r_elf_finish_dynamic_symbol()\n"); 3119 #endif 3120 3121 htab = m32r_elf_hash_table (info); 3122 if (htab == NULL) 3123 return FALSE; 3124 3125 if (h->plt.offset != (bfd_vma) -1) 3126 { 3127 asection *splt; 3128 asection *sgot; 3129 asection *srela; 3130 3131 bfd_vma plt_index; 3132 bfd_vma got_offset; 3133 Elf_Internal_Rela rela; 3134 3135 /* This symbol has an entry in the procedure linkage table. Set 3136 it up. */ 3137 3138 BFD_ASSERT (h->dynindx != -1); 3139 3140 splt = htab->splt; 3141 sgot = htab->sgotplt; 3142 srela = htab->srelplt; 3143 BFD_ASSERT (splt != NULL && sgot != NULL && srela != NULL); 3144 3145 /* Get the index in the procedure linkage table which 3146 corresponds to this symbol. This is the index of this symbol 3147 in all the symbols for which we are making plt entries. The 3148 first entry in the procedure linkage table is reserved. */ 3149 plt_index = h->plt.offset / PLT_ENTRY_SIZE - 1; 3150 3151 /* Get the offset into the .got table of the entry that 3152 corresponds to this function. Each .got entry is 4 bytes. 3153 The first three are reserved. */ 3154 got_offset = (plt_index + 3) * 4; 3155 3156 /* Fill in the entry in the procedure linkage table. */ 3157 if (! info->shared) 3158 { 3159 bfd_put_32 (output_bfd, 3160 (PLT_ENTRY_WORD0b 3161 + (((sgot->output_section->vma 3162 + sgot->output_offset 3163 + got_offset) >> 16) & 0xffff)), 3164 splt->contents + h->plt.offset); 3165 bfd_put_32 (output_bfd, 3166 (PLT_ENTRY_WORD1b 3167 + ((sgot->output_section->vma 3168 + sgot->output_offset 3169 + got_offset) & 0xffff)), 3170 splt->contents + h->plt.offset + 4); 3171 bfd_put_32 (output_bfd, PLT_ENTRY_WORD2, 3172 splt->contents + h->plt.offset + 8); 3173 bfd_put_32 (output_bfd, 3174 (PLT_ENTRY_WORD3 3175 + plt_index * sizeof (Elf32_External_Rela)), 3176 splt->contents + h->plt.offset + 12); 3177 bfd_put_32 (output_bfd, 3178 (PLT_ENTRY_WORD4 3179 + (((unsigned int) ((- (h->plt.offset + 16)) >> 2)) & 0xffffff)), 3180 splt->contents + h->plt.offset + 16); 3181 } 3182 else 3183 { 3184 bfd_put_32 (output_bfd, 3185 PLT_ENTRY_WORD0 + got_offset, 3186 splt->contents + h->plt.offset); 3187 bfd_put_32 (output_bfd, PLT_ENTRY_WORD1, 3188 splt->contents + h->plt.offset + 4); 3189 bfd_put_32 (output_bfd, PLT_ENTRY_WORD2, 3190 splt->contents + h->plt.offset + 8); 3191 bfd_put_32 (output_bfd, 3192 (PLT_ENTRY_WORD3 3193 + plt_index * sizeof (Elf32_External_Rela)), 3194 splt->contents + h->plt.offset + 12); 3195 bfd_put_32 (output_bfd, 3196 (PLT_ENTRY_WORD4 3197 + (((unsigned int) ((- (h->plt.offset + 16)) >> 2)) & 0xffffff)), 3198 splt->contents + h->plt.offset + 16); 3199 } 3200 3201 /* Fill in the entry in the global offset table. */ 3202 bfd_put_32 (output_bfd, 3203 (splt->output_section->vma 3204 + splt->output_offset 3205 + h->plt.offset 3206 + 12), /* same offset */ 3207 sgot->contents + got_offset); 3208 3209 /* Fill in the entry in the .rela.plt section. */ 3210 rela.r_offset = (sgot->output_section->vma 3211 + sgot->output_offset 3212 + got_offset); 3213 rela.r_info = ELF32_R_INFO (h->dynindx, R_M32R_JMP_SLOT); 3214 rela.r_addend = 0; 3215 loc = srela->contents; 3216 loc += plt_index * sizeof (Elf32_External_Rela); 3217 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); 3218 3219 if (!h->def_regular) 3220 { 3221 /* Mark the symbol as undefined, rather than as defined in 3222 the .plt section. Leave the value alone. */ 3223 sym->st_shndx = SHN_UNDEF; 3224 } 3225 } 3226 3227 if (h->got.offset != (bfd_vma) -1) 3228 { 3229 asection *sgot; 3230 asection *srela; 3231 Elf_Internal_Rela rela; 3232 3233 /* This symbol has an entry in the global offset table. Set it 3234 up. */ 3235 3236 sgot = htab->sgot; 3237 srela = htab->srelgot; 3238 BFD_ASSERT (sgot != NULL && srela != NULL); 3239 3240 rela.r_offset = (sgot->output_section->vma 3241 + sgot->output_offset 3242 + (h->got.offset &~ 1)); 3243 3244 /* If this is a -Bsymbolic link, and the symbol is defined 3245 locally, we just want to emit a RELATIVE reloc. Likewise if 3246 the symbol was forced to be local because of a version file. 3247 The entry in the global offset table will already have been 3248 initialized in the relocate_section function. */ 3249 if (info->shared 3250 && (info->symbolic 3251 || h->dynindx == -1 3252 || h->forced_local) 3253 && h->def_regular) 3254 { 3255 rela.r_info = ELF32_R_INFO (0, R_M32R_RELATIVE); 3256 rela.r_addend = (h->root.u.def.value 3257 + h->root.u.def.section->output_section->vma 3258 + h->root.u.def.section->output_offset); 3259 } 3260 else 3261 { 3262 BFD_ASSERT ((h->got.offset & 1) == 0); 3263 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + h->got.offset); 3264 rela.r_info = ELF32_R_INFO (h->dynindx, R_M32R_GLOB_DAT); 3265 rela.r_addend = 0; 3266 } 3267 3268 loc = srela->contents; 3269 loc += srela->reloc_count * sizeof (Elf32_External_Rela); 3270 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); 3271 ++srela->reloc_count; 3272 } 3273 3274 if (h->needs_copy) 3275 { 3276 asection *s; 3277 Elf_Internal_Rela rela; 3278 3279 /* This symbols needs a copy reloc. Set it up. */ 3280 3281 BFD_ASSERT (h->dynindx != -1 3282 && (h->root.type == bfd_link_hash_defined 3283 || h->root.type == bfd_link_hash_defweak)); 3284 3285 s = bfd_get_linker_section (htab->root.dynobj, ".rela.bss"); 3286 BFD_ASSERT (s != NULL); 3287 3288 rela.r_offset = (h->root.u.def.value 3289 + h->root.u.def.section->output_section->vma 3290 + h->root.u.def.section->output_offset); 3291 rela.r_info = ELF32_R_INFO (h->dynindx, R_M32R_COPY); 3292 rela.r_addend = 0; 3293 loc = s->contents; 3294 loc += s->reloc_count * sizeof (Elf32_External_Rela); 3295 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); 3296 ++s->reloc_count; 3297 } 3298 3299 /* Mark some specially defined symbols as absolute. */ 3300 if (h == htab->root.hdynamic || h == htab->root.hgot) 3301 sym->st_shndx = SHN_ABS; 3302 3303 return TRUE; 3304 } 3305 3306 3307 /* Finish up the dynamic sections. */ 3308 3309 static bfd_boolean 3310 m32r_elf_finish_dynamic_sections (bfd *output_bfd, 3311 struct bfd_link_info *info) 3312 { 3313 struct elf_m32r_link_hash_table *htab; 3314 bfd *dynobj; 3315 asection *sdyn; 3316 asection *sgot; 3317 3318 #ifdef DEBUG_PIC 3319 printf ("m32r_elf_finish_dynamic_sections()\n"); 3320 #endif 3321 3322 htab = m32r_elf_hash_table (info); 3323 if (htab == NULL) 3324 return FALSE; 3325 3326 dynobj = htab->root.dynobj; 3327 3328 sgot = htab->sgotplt; 3329 sdyn = bfd_get_linker_section (dynobj, ".dynamic"); 3330 3331 if (htab->root.dynamic_sections_created) 3332 { 3333 asection *splt; 3334 Elf32_External_Dyn *dyncon, *dynconend; 3335 3336 BFD_ASSERT (sgot != NULL && sdyn != NULL); 3337 3338 dyncon = (Elf32_External_Dyn *) sdyn->contents; 3339 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size); 3340 3341 for (; dyncon < dynconend; dyncon++) 3342 { 3343 Elf_Internal_Dyn dyn; 3344 asection *s; 3345 3346 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn); 3347 3348 switch (dyn.d_tag) 3349 { 3350 default: 3351 break; 3352 3353 case DT_PLTGOT: 3354 s = htab->sgot->output_section; 3355 goto get_vma; 3356 case DT_JMPREL: 3357 s = htab->srelplt->output_section; 3358 get_vma: 3359 BFD_ASSERT (s != NULL); 3360 dyn.d_un.d_ptr = s->vma; 3361 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); 3362 break; 3363 3364 case DT_PLTRELSZ: 3365 s = htab->srelplt->output_section; 3366 BFD_ASSERT (s != NULL); 3367 dyn.d_un.d_val = s->size; 3368 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); 3369 break; 3370 3371 case DT_RELASZ: 3372 /* My reading of the SVR4 ABI indicates that the 3373 procedure linkage table relocs (DT_JMPREL) should be 3374 included in the overall relocs (DT_RELA). This is 3375 what Solaris does. However, UnixWare can not handle 3376 that case. Therefore, we override the DT_RELASZ entry 3377 here to make it not include the JMPREL relocs. Since 3378 the linker script arranges for .rela.plt to follow all 3379 other relocation sections, we don't have to worry 3380 about changing the DT_RELA entry. */ 3381 if (htab->srelplt != NULL) 3382 { 3383 s = htab->srelplt->output_section; 3384 dyn.d_un.d_val -= s->size; 3385 } 3386 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); 3387 break; 3388 } 3389 } 3390 3391 /* Fill in the first entry in the procedure linkage table. */ 3392 splt = htab->splt; 3393 if (splt && splt->size > 0) 3394 { 3395 if (info->shared) 3396 { 3397 bfd_put_32 (output_bfd, PLT0_PIC_ENTRY_WORD0, splt->contents); 3398 bfd_put_32 (output_bfd, PLT0_PIC_ENTRY_WORD1, splt->contents + 4); 3399 bfd_put_32 (output_bfd, PLT0_PIC_ENTRY_WORD2, splt->contents + 8); 3400 bfd_put_32 (output_bfd, PLT0_PIC_ENTRY_WORD3, splt->contents + 12); 3401 bfd_put_32 (output_bfd, PLT0_PIC_ENTRY_WORD4, splt->contents + 16); 3402 } 3403 else 3404 { 3405 unsigned long addr; 3406 /* addr = .got + 4 */ 3407 addr = sgot->output_section->vma + sgot->output_offset + 4; 3408 bfd_put_32 (output_bfd, 3409 PLT0_ENTRY_WORD0 | ((addr >> 16) & 0xffff), 3410 splt->contents); 3411 bfd_put_32 (output_bfd, 3412 PLT0_ENTRY_WORD1 | (addr & 0xffff), 3413 splt->contents + 4); 3414 bfd_put_32 (output_bfd, PLT0_ENTRY_WORD2, splt->contents + 8); 3415 bfd_put_32 (output_bfd, PLT0_ENTRY_WORD3, splt->contents + 12); 3416 bfd_put_32 (output_bfd, PLT0_ENTRY_WORD4, splt->contents + 16); 3417 } 3418 3419 elf_section_data (splt->output_section)->this_hdr.sh_entsize = 3420 PLT_ENTRY_SIZE; 3421 } 3422 } 3423 3424 /* Fill in the first three entries in the global offset table. */ 3425 if (sgot && sgot->size > 0) 3426 { 3427 if (sdyn == NULL) 3428 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents); 3429 else 3430 bfd_put_32 (output_bfd, 3431 sdyn->output_section->vma + sdyn->output_offset, 3432 sgot->contents); 3433 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 4); 3434 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 8); 3435 3436 elf_section_data (sgot->output_section)->this_hdr.sh_entsize = 4; 3437 } 3438 3439 return TRUE; 3440 } 3441 3442 3443 /* Set the right machine number. */ 3445 3446 static bfd_boolean 3447 m32r_elf_object_p (bfd *abfd) 3448 { 3449 switch (elf_elfheader (abfd)->e_flags & EF_M32R_ARCH) 3450 { 3451 default: 3452 case E_M32R_ARCH: (void) bfd_default_set_arch_mach (abfd, bfd_arch_m32r, bfd_mach_m32r); break; 3453 case E_M32RX_ARCH: (void) bfd_default_set_arch_mach (abfd, bfd_arch_m32r, bfd_mach_m32rx); break; 3454 case E_M32R2_ARCH: (void) bfd_default_set_arch_mach (abfd, bfd_arch_m32r, bfd_mach_m32r2); break; 3455 } 3456 return TRUE; 3457 } 3458 3459 /* Store the machine number in the flags field. */ 3460 3461 static void 3462 m32r_elf_final_write_processing (bfd *abfd, 3463 bfd_boolean linker ATTRIBUTE_UNUSED) 3464 { 3465 unsigned long val; 3466 3467 switch (bfd_get_mach (abfd)) 3468 { 3469 default: 3470 case bfd_mach_m32r: val = E_M32R_ARCH; break; 3471 case bfd_mach_m32rx: val = E_M32RX_ARCH; break; 3472 case bfd_mach_m32r2: val = E_M32R2_ARCH; break; 3473 } 3474 3475 elf_elfheader (abfd)->e_flags &=~ EF_M32R_ARCH; 3476 elf_elfheader (abfd)->e_flags |= val; 3477 } 3478 3479 /* Function to keep M32R specific file flags. */ 3480 3481 static bfd_boolean 3482 m32r_elf_set_private_flags (bfd *abfd, flagword flags) 3483 { 3484 BFD_ASSERT (!elf_flags_init (abfd) 3485 || elf_elfheader (abfd)->e_flags == flags); 3486 3487 elf_elfheader (abfd)->e_flags = flags; 3488 elf_flags_init (abfd) = TRUE; 3489 return TRUE; 3490 } 3491 3492 /* Merge backend specific data from an object file to the output 3493 object file when linking. */ 3494 3495 static bfd_boolean 3496 m32r_elf_merge_private_bfd_data (bfd *ibfd, bfd *obfd) 3497 { 3498 flagword out_flags; 3499 flagword in_flags; 3500 3501 if ( bfd_get_flavour (ibfd) != bfd_target_elf_flavour 3502 || bfd_get_flavour (obfd) != bfd_target_elf_flavour) 3503 return TRUE; 3504 3505 in_flags = elf_elfheader (ibfd)->e_flags; 3506 out_flags = elf_elfheader (obfd)->e_flags; 3507 3508 if (! elf_flags_init (obfd)) 3509 { 3510 /* If the input is the default architecture then do not 3511 bother setting the flags for the output architecture, 3512 instead allow future merges to do this. If no future 3513 merges ever set these flags then they will retain their 3514 unitialised values, which surprise surprise, correspond 3515 to the default values. */ 3516 if (bfd_get_arch_info (ibfd)->the_default) 3517 return TRUE; 3518 3519 elf_flags_init (obfd) = TRUE; 3520 elf_elfheader (obfd)->e_flags = in_flags; 3521 3522 if (bfd_get_arch (obfd) == bfd_get_arch (ibfd) 3523 && bfd_get_arch_info (obfd)->the_default) 3524 return bfd_set_arch_mach (obfd, bfd_get_arch (ibfd), 3525 bfd_get_mach (ibfd)); 3526 3527 return TRUE; 3528 } 3529 3530 /* Check flag compatibility. */ 3531 if (in_flags == out_flags) 3532 return TRUE; 3533 3534 if ((in_flags & EF_M32R_ARCH) != (out_flags & EF_M32R_ARCH)) 3535 { 3536 if ( ((in_flags & EF_M32R_ARCH) != E_M32R_ARCH) 3537 || ((out_flags & EF_M32R_ARCH) == E_M32R_ARCH) 3538 || ((in_flags & EF_M32R_ARCH) == E_M32R2_ARCH)) 3539 { 3540 (*_bfd_error_handler) 3541 (_("%B: Instruction set mismatch with previous modules"), ibfd); 3542 3543 bfd_set_error (bfd_error_bad_value); 3544 return FALSE; 3545 } 3546 } 3547 3548 return TRUE; 3549 } 3550 3551 /* Display the flags field. */ 3552 3553 static bfd_boolean 3554 m32r_elf_print_private_bfd_data (bfd *abfd, void * ptr) 3555 { 3556 FILE * file = (FILE *) ptr; 3557 3558 BFD_ASSERT (abfd != NULL && ptr != NULL); 3559 3560 _bfd_elf_print_private_bfd_data (abfd, ptr); 3561 3562 fprintf (file, _("private flags = %lx"), elf_elfheader (abfd)->e_flags); 3563 3564 switch (elf_elfheader (abfd)->e_flags & EF_M32R_ARCH) 3565 { 3566 default: 3567 case E_M32R_ARCH: fprintf (file, _(": m32r instructions")); break; 3568 case E_M32RX_ARCH: fprintf (file, _(": m32rx instructions")); break; 3569 case E_M32R2_ARCH: fprintf (file, _(": m32r2 instructions")); break; 3570 } 3571 3572 fputc ('\n', file); 3573 3574 return TRUE; 3575 } 3576 3577 static asection * 3578 m32r_elf_gc_mark_hook (asection *sec, 3579 struct bfd_link_info *info, 3580 Elf_Internal_Rela *rel, 3581 struct elf_link_hash_entry *h, 3582 Elf_Internal_Sym *sym) 3583 { 3584 if (h != NULL) 3585 switch (ELF32_R_TYPE (rel->r_info)) 3586 { 3587 case R_M32R_GNU_VTINHERIT: 3588 case R_M32R_GNU_VTENTRY: 3589 case R_M32R_RELA_GNU_VTINHERIT: 3590 case R_M32R_RELA_GNU_VTENTRY: 3591 return NULL; 3592 } 3593 3594 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym); 3595 } 3596 3597 static bfd_boolean 3598 m32r_elf_gc_sweep_hook (bfd *abfd ATTRIBUTE_UNUSED, 3599 struct bfd_link_info *info ATTRIBUTE_UNUSED, 3600 asection *sec ATTRIBUTE_UNUSED, 3601 const Elf_Internal_Rela *relocs ATTRIBUTE_UNUSED) 3602 { 3603 /* Update the got entry reference counts for the section being removed. */ 3604 Elf_Internal_Shdr *symtab_hdr; 3605 struct elf_link_hash_entry **sym_hashes; 3606 bfd_signed_vma *local_got_refcounts; 3607 const Elf_Internal_Rela *rel, *relend; 3608 3609 if (info->relocatable) 3610 return TRUE; 3611 3612 elf_section_data (sec)->local_dynrel = NULL; 3613 3614 symtab_hdr = &elf_tdata (abfd)->symtab_hdr; 3615 sym_hashes = elf_sym_hashes (abfd); 3616 local_got_refcounts = elf_local_got_refcounts (abfd); 3617 3618 relend = relocs + sec->reloc_count; 3619 for (rel = relocs; rel < relend; rel++) 3620 { 3621 unsigned long r_symndx; 3622 struct elf_link_hash_entry *h = NULL; 3623 3624 r_symndx = ELF32_R_SYM (rel->r_info); 3625 if (r_symndx >= symtab_hdr->sh_info) 3626 { 3627 h = sym_hashes[r_symndx - symtab_hdr->sh_info]; 3628 while (h->root.type == bfd_link_hash_indirect 3629 || h->root.type == bfd_link_hash_warning) 3630 h = (struct elf_link_hash_entry *) h->root.u.i.link; 3631 } 3632 3633 switch (ELF32_R_TYPE (rel->r_info)) 3634 { 3635 case R_M32R_GOT16_HI_ULO: 3636 case R_M32R_GOT16_HI_SLO: 3637 case R_M32R_GOT16_LO: 3638 case R_M32R_GOTOFF: 3639 case R_M32R_GOTOFF_HI_ULO: 3640 case R_M32R_GOTOFF_HI_SLO: 3641 case R_M32R_GOTOFF_LO: 3642 case R_M32R_GOT24: 3643 case R_M32R_GOTPC_HI_ULO: 3644 case R_M32R_GOTPC_HI_SLO: 3645 case R_M32R_GOTPC_LO: 3646 case R_M32R_GOTPC24: 3647 if (h != NULL) 3648 { 3649 if (h->got.refcount > 0) 3650 h->got.refcount--; 3651 } 3652 else 3653 { 3654 if (local_got_refcounts && local_got_refcounts[r_symndx] > 0) 3655 local_got_refcounts[r_symndx]--; 3656 } 3657 break; 3658 3659 case R_M32R_16_RELA: 3660 case R_M32R_24_RELA: 3661 case R_M32R_32_RELA: 3662 case R_M32R_REL32: 3663 case R_M32R_HI16_ULO_RELA: 3664 case R_M32R_HI16_SLO_RELA: 3665 case R_M32R_LO16_RELA: 3666 case R_M32R_SDA16_RELA: 3667 case R_M32R_10_PCREL_RELA: 3668 case R_M32R_18_PCREL_RELA: 3669 case R_M32R_26_PCREL_RELA: 3670 if (h != NULL) 3671 { 3672 struct elf_m32r_link_hash_entry *eh; 3673 struct elf_m32r_dyn_relocs **pp; 3674 struct elf_m32r_dyn_relocs *p; 3675 3676 if (!info->shared && h->plt.refcount > 0) 3677 h->plt.refcount -= 1; 3678 3679 eh = (struct elf_m32r_link_hash_entry *) h; 3680 3681 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next) 3682 if (p->sec == sec) 3683 { 3684 if ( ELF32_R_TYPE (rel->r_info) == R_M32R_26_PCREL_RELA 3685 || ELF32_R_TYPE (rel->r_info) == R_M32R_18_PCREL_RELA 3686 || ELF32_R_TYPE (rel->r_info) == R_M32R_10_PCREL_RELA 3687 || ELF32_R_TYPE (rel->r_info) == R_M32R_REL32) 3688 p->pc_count -= 1; 3689 p->count -= 1; 3690 if (p->count == 0) 3691 *pp = p->next; 3692 break; 3693 } 3694 } 3695 break; 3696 3697 case R_M32R_26_PLTREL: 3698 if (h != NULL) 3699 { 3700 if (h->plt.refcount > 0) 3701 h->plt.refcount--; 3702 } 3703 break; 3704 3705 default: 3706 break; 3707 } 3708 } 3709 3710 return TRUE; 3711 } 3712 3713 /* Look through the relocs for a section during the first phase. 3714 Since we don't do .gots or .plts, we just need to consider the 3715 virtual table relocs for gc. */ 3716 3717 static bfd_boolean 3718 m32r_elf_check_relocs (bfd *abfd, 3719 struct bfd_link_info *info, 3720 asection *sec, 3721 const Elf_Internal_Rela *relocs) 3722 { 3723 Elf_Internal_Shdr *symtab_hdr; 3724 struct elf_link_hash_entry **sym_hashes; 3725 const Elf_Internal_Rela *rel; 3726 const Elf_Internal_Rela *rel_end; 3727 struct elf_m32r_link_hash_table *htab; 3728 bfd *dynobj; 3729 asection *sreloc; 3730 3731 if (info->relocatable) 3732 return TRUE; 3733 3734 sreloc = NULL; 3735 symtab_hdr = &elf_tdata (abfd)->symtab_hdr; 3736 sym_hashes = elf_sym_hashes (abfd); 3737 3738 htab = m32r_elf_hash_table (info); 3739 if (htab == NULL) 3740 return FALSE; 3741 3742 dynobj = htab->root.dynobj; 3743 3744 rel_end = relocs + sec->reloc_count; 3745 for (rel = relocs; rel < rel_end; rel++) 3746 { 3747 int r_type; 3748 struct elf_link_hash_entry *h; 3749 unsigned long r_symndx; 3750 3751 r_symndx = ELF32_R_SYM (rel->r_info); 3752 r_type = ELF32_R_TYPE (rel->r_info); 3753 if (r_symndx < symtab_hdr->sh_info) 3754 h = NULL; 3755 else 3756 { 3757 h = sym_hashes[r_symndx - symtab_hdr->sh_info]; 3758 while (h->root.type == bfd_link_hash_indirect 3759 || h->root.type == bfd_link_hash_warning) 3760 h = (struct elf_link_hash_entry *) h->root.u.i.link; 3761 3762 /* PR15323, ref flags aren't set for references in the same 3763 object. */ 3764 h->root.non_ir_ref = 1; 3765 } 3766 3767 /* Some relocs require a global offset table. */ 3768 if (htab->sgot == NULL) 3769 { 3770 switch (r_type) 3771 { 3772 case R_M32R_GOT16_HI_ULO: 3773 case R_M32R_GOT16_HI_SLO: 3774 case R_M32R_GOTOFF: 3775 case R_M32R_GOTOFF_HI_ULO: 3776 case R_M32R_GOTOFF_HI_SLO: 3777 case R_M32R_GOTOFF_LO: 3778 case R_M32R_GOT16_LO: 3779 case R_M32R_GOTPC24: 3780 case R_M32R_GOTPC_HI_ULO: 3781 case R_M32R_GOTPC_HI_SLO: 3782 case R_M32R_GOTPC_LO: 3783 case R_M32R_GOT24: 3784 if (dynobj == NULL) 3785 htab->root.dynobj = dynobj = abfd; 3786 if (! create_got_section (dynobj, info)) 3787 return FALSE; 3788 break; 3789 3790 default: 3791 break; 3792 } 3793 } 3794 3795 switch (r_type) 3796 { 3797 case R_M32R_GOT16_HI_ULO: 3798 case R_M32R_GOT16_HI_SLO: 3799 case R_M32R_GOT16_LO: 3800 case R_M32R_GOT24: 3801 3802 if (h != NULL) 3803 h->got.refcount += 1; 3804 else 3805 { 3806 bfd_signed_vma *local_got_refcounts; 3807 3808 /* This is a global offset table entry for a local 3809 symbol. */ 3810 local_got_refcounts = elf_local_got_refcounts (abfd); 3811 if (local_got_refcounts == NULL) 3812 { 3813 bfd_size_type size; 3814 3815 size = symtab_hdr->sh_info; 3816 size *= sizeof (bfd_signed_vma); 3817 local_got_refcounts = bfd_zalloc (abfd, size); 3818 if (local_got_refcounts == NULL) 3819 return FALSE; 3820 elf_local_got_refcounts (abfd) = local_got_refcounts; 3821 } 3822 local_got_refcounts[r_symndx] += 1; 3823 } 3824 break; 3825 3826 case R_M32R_26_PLTREL: 3827 /* This symbol requires a procedure linkage table entry. We 3828 actually build the entry in adjust_dynamic_symbol, 3829 because this might be a case of linking PIC code without 3830 linking in any dynamic objects, in which case we don't 3831 need to generate a procedure linkage table after all. */ 3832 3833 /* If this is a local symbol, we resolve it directly without 3834 creating a procedure linkage table entry. */ 3835 if (h == NULL) 3836 continue; 3837 3838 if (h->forced_local) 3839 break; 3840 3841 h->needs_plt = 1; 3842 h->plt.refcount += 1; 3843 break; 3844 3845 case R_M32R_16_RELA: 3846 case R_M32R_24_RELA: 3847 case R_M32R_32_RELA: 3848 case R_M32R_REL32: 3849 case R_M32R_HI16_ULO_RELA: 3850 case R_M32R_HI16_SLO_RELA: 3851 case R_M32R_LO16_RELA: 3852 case R_M32R_SDA16_RELA: 3853 case R_M32R_10_PCREL_RELA: 3854 case R_M32R_18_PCREL_RELA: 3855 case R_M32R_26_PCREL_RELA: 3856 3857 if (h != NULL && !info->shared) 3858 { 3859 h->non_got_ref = 1; 3860 h->plt.refcount += 1; 3861 } 3862 3863 /* If we are creating a shared library, and this is a reloc 3864 against a global symbol, or a non PC relative reloc 3865 against a local symbol, then we need to copy the reloc 3866 into the shared library. However, if we are linking with 3867 -Bsymbolic, we do not need to copy a reloc against a 3868 global symbol which is defined in an object we are 3869 including in the link (i.e., DEF_REGULAR is set). At 3870 this point we have not seen all the input files, so it is 3871 possible that DEF_REGULAR is not set now but will be set 3872 later (it is never cleared). We account for that 3873 possibility below by storing information in the 3874 dyn_relocs field of the hash table entry. A similar 3875 situation occurs when creating shared libraries and symbol 3876 visibility changes render the symbol local. 3877 3878 If on the other hand, we are creating an executable, we 3879 may need to keep relocations for symbols satisfied by a 3880 dynamic library if we manage to avoid copy relocs for the 3881 symbol. */ 3882 if ((info->shared 3883 && (sec->flags & SEC_ALLOC) != 0 3884 && (( r_type != R_M32R_26_PCREL_RELA 3885 && r_type != R_M32R_18_PCREL_RELA 3886 && r_type != R_M32R_10_PCREL_RELA 3887 && r_type != R_M32R_REL32) 3888 || (h != NULL 3889 && (! info->symbolic 3890 || h->root.type == bfd_link_hash_defweak 3891 || !h->def_regular)))) 3892 || (!info->shared 3893 && (sec->flags & SEC_ALLOC) != 0 3894 && h != NULL 3895 && (h->root.type == bfd_link_hash_defweak 3896 || !h->def_regular))) 3897 { 3898 struct elf_m32r_dyn_relocs *p; 3899 struct elf_m32r_dyn_relocs **head; 3900 3901 if (dynobj == NULL) 3902 htab->root.dynobj = dynobj = abfd; 3903 3904 /* When creating a shared object, we must copy these 3905 relocs into the output file. We create a reloc 3906 section in dynobj and make room for the reloc. */ 3907 if (sreloc == NULL) 3908 { 3909 sreloc = _bfd_elf_make_dynamic_reloc_section 3910 (sec, dynobj, 2, abfd, /*rela?*/ TRUE); 3911 3912 if (sreloc == NULL) 3913 return FALSE; 3914 } 3915 3916 /* If this is a global symbol, we count the number of 3917 relocations we need for this symbol. */ 3918 if (h != NULL) 3919 head = &((struct elf_m32r_link_hash_entry *) h)->dyn_relocs; 3920 else 3921 { 3922 /* Track dynamic relocs needed for local syms too. */ 3923 asection *s; 3924 void *vpp; 3925 Elf_Internal_Sym *isym; 3926 3927 isym = bfd_sym_from_r_symndx (&htab->sym_cache, 3928 abfd, r_symndx); 3929 if (isym == NULL) 3930 return FALSE; 3931 3932 s = bfd_section_from_elf_index (abfd, isym->st_shndx); 3933 if (s == NULL) 3934 s = sec; 3935 3936 vpp = &elf_section_data (s)->local_dynrel; 3937 head = (struct elf_m32r_dyn_relocs **) vpp; 3938 } 3939 3940 p = *head; 3941 if (p == NULL || p->sec != sec) 3942 { 3943 bfd_size_type amt = sizeof (*p); 3944 3945 p = bfd_alloc (dynobj, amt); 3946 if (p == NULL) 3947 return FALSE; 3948 p->next = *head; 3949 *head = p; 3950 p->sec = sec; 3951 p->count = 0; 3952 p->pc_count = 0; 3953 } 3954 3955 p->count += 1; 3956 if ( ELF32_R_TYPE (rel->r_info) == R_M32R_26_PCREL_RELA 3957 || ELF32_R_TYPE (rel->r_info) == R_M32R_18_PCREL_RELA 3958 || ELF32_R_TYPE (rel->r_info) == R_M32R_10_PCREL_RELA 3959 || ELF32_R_TYPE (rel->r_info) == R_M32R_REL32) 3960 p->pc_count += 1; 3961 } 3962 break; 3963 3964 /* This relocation describes the C++ object vtable hierarchy. 3965 Reconstruct it for later use during GC. */ 3966 case R_M32R_RELA_GNU_VTINHERIT: 3967 case R_M32R_GNU_VTINHERIT: 3968 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset)) 3969 return FALSE; 3970 break; 3971 3972 /* This relocation describes which C++ vtable entries are actually 3973 used. Record for later use during GC. */ 3974 case R_M32R_GNU_VTENTRY: 3975 BFD_ASSERT (h != NULL); 3976 if (h != NULL 3977 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_offset)) 3978 return FALSE; 3979 break; 3980 case R_M32R_RELA_GNU_VTENTRY: 3981 BFD_ASSERT (h != NULL); 3982 if (h != NULL 3983 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend)) 3984 return FALSE; 3985 break; 3986 } 3987 } 3988 3989 return TRUE; 3990 } 3991 3992 static const struct bfd_elf_special_section m32r_elf_special_sections[] = 3993 { 3994 { STRING_COMMA_LEN (".sbss"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE }, 3995 { STRING_COMMA_LEN (".sdata"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, 3996 { NULL, 0, 0, 0, 0 } 3997 }; 3998 3999 static enum elf_reloc_type_class 4000 m32r_elf_reloc_type_class (const struct bfd_link_info *info ATTRIBUTE_UNUSED, 4001 const asection *rel_sec ATTRIBUTE_UNUSED, 4002 const Elf_Internal_Rela *rela) 4003 { 4004 switch ((int) ELF32_R_TYPE (rela->r_info)) 4005 { 4006 case R_M32R_RELATIVE: return reloc_class_relative; 4007 case R_M32R_JMP_SLOT: return reloc_class_plt; 4008 case R_M32R_COPY: return reloc_class_copy; 4009 default: return reloc_class_normal; 4010 } 4011 } 4012 4013 #define ELF_ARCH bfd_arch_m32r 4015 #define ELF_TARGET_ID M32R_ELF_DATA 4016 #define ELF_MACHINE_CODE EM_M32R 4017 #define ELF_MACHINE_ALT1 EM_CYGNUS_M32R 4018 #define ELF_MAXPAGESIZE 0x1 /* Explicitly requested by Mitsubishi. */ 4019 4020 #define TARGET_BIG_SYM m32r_elf32_vec 4021 #define TARGET_BIG_NAME "elf32-m32r" 4022 #define TARGET_LITTLE_SYM m32r_elf32_le_vec 4023 #define TARGET_LITTLE_NAME "elf32-m32rle" 4024 4025 #define elf_info_to_howto m32r_info_to_howto 4026 #define elf_info_to_howto_rel m32r_info_to_howto_rel 4027 #define elf_backend_section_from_bfd_section _bfd_m32r_elf_section_from_bfd_section 4028 #define elf_backend_symbol_processing _bfd_m32r_elf_symbol_processing 4029 #define elf_backend_add_symbol_hook m32r_elf_add_symbol_hook 4030 #define elf_backend_relocate_section m32r_elf_relocate_section 4031 #define elf_backend_gc_mark_hook m32r_elf_gc_mark_hook 4032 #define elf_backend_gc_sweep_hook m32r_elf_gc_sweep_hook 4033 #define elf_backend_check_relocs m32r_elf_check_relocs 4034 4035 #define elf_backend_create_dynamic_sections m32r_elf_create_dynamic_sections 4036 #define bfd_elf32_bfd_link_hash_table_create m32r_elf_link_hash_table_create 4037 #define elf_backend_size_dynamic_sections m32r_elf_size_dynamic_sections 4038 #define elf_backend_omit_section_dynsym \ 4039 ((bfd_boolean (*) (bfd *, struct bfd_link_info *, asection *)) bfd_true) 4040 #define elf_backend_finish_dynamic_sections m32r_elf_finish_dynamic_sections 4041 #define elf_backend_adjust_dynamic_symbol m32r_elf_adjust_dynamic_symbol 4042 #define elf_backend_finish_dynamic_symbol m32r_elf_finish_dynamic_symbol 4043 #define elf_backend_reloc_type_class m32r_elf_reloc_type_class 4044 #define elf_backend_copy_indirect_symbol m32r_elf_copy_indirect_symbol 4045 4046 #define elf_backend_can_gc_sections 1 4047 /*#if !USE_REL 4048 #define elf_backend_rela_normal 1 4049 #endif*/ 4050 #define elf_backend_can_refcount 1 4051 #define elf_backend_want_got_plt 1 4052 #define elf_backend_plt_readonly 1 4053 #define elf_backend_want_plt_sym 0 4054 #define elf_backend_got_header_size 12 4055 4056 #define elf_backend_may_use_rel_p 1 4057 #ifdef USE_M32R_OLD_RELOC 4058 #define elf_backend_default_use_rela_p 0 4059 #define elf_backend_may_use_rela_p 0 4060 #else 4061 #define elf_backend_default_use_rela_p 1 4062 #define elf_backend_may_use_rela_p 1 4063 #endif 4064 4065 #define elf_backend_object_p m32r_elf_object_p 4066 #define elf_backend_final_write_processing m32r_elf_final_write_processing 4067 #define bfd_elf32_bfd_merge_private_bfd_data m32r_elf_merge_private_bfd_data 4068 #define bfd_elf32_bfd_set_private_flags m32r_elf_set_private_flags 4069 #define bfd_elf32_bfd_print_private_bfd_data m32r_elf_print_private_bfd_data 4070 #define elf_backend_special_sections m32r_elf_special_sections 4071 4072 #include "elf32-target.h" 4073 4074 #undef ELF_MAXPAGESIZE 4075 #define ELF_MAXPAGESIZE 0x1000 4076 4077 #undef TARGET_BIG_SYM 4078 #define TARGET_BIG_SYM m32r_elf32_linux_vec 4079 #undef TARGET_BIG_NAME 4080 #define TARGET_BIG_NAME "elf32-m32r-linux" 4081 #undef TARGET_LITTLE_SYM 4082 #define TARGET_LITTLE_SYM m32r_elf32_linux_le_vec 4083 #undef TARGET_LITTLE_NAME 4084 #define TARGET_LITTLE_NAME "elf32-m32rle-linux" 4085 #undef elf32_bed 4086 #define elf32_bed elf32_m32r_lin_bed 4087 4088 #include "elf32-target.h" 4089 4090
