1 /* M32R-specific support for 32-bit ELF. 2 Copyright (C) 1996-2018 Free Software Foundation, Inc. 3 4 This file is part of BFD, the Binary File Descriptor library. 5 6 This program is free software; you can redistribute it and/or modify 7 it under the terms of the GNU General Public License as published by 8 the Free Software Foundation; either version 3 of the License, or 9 (at your option) any later version. 10 11 This program is distributed in the hope that it will be useful, 12 but WITHOUT ANY WARRANTY; without even the implied warranty of 13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14 GNU General Public License for more details. 15 16 You should have received a copy of the GNU General Public License 17 along with this program; if not, write to the Free Software 18 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, 19 MA 02110-1301, USA. */ 20 21 #include "sysdep.h" 22 #include "bfd.h" 23 #include "libbfd.h" 24 #include "elf-bfd.h" 25 #include "elf/m32r.h" 26 27 #define NOP_INSN 0x7000 28 #define MAKE_PARALLEL(insn) ((insn) | 0x8000) 29 30 /* Use REL instead of RELA to save space. 31 This only saves space in libraries and object files, but perhaps 32 relocs will be put in ROM? All in all though, REL relocs are a pain 33 to work with. */ 34 /* #define USE_REL 1 35 36 #ifndef USE_REL 37 #define USE_REL 0 38 #endif */ 39 /* Use RELA. But use REL to link old objects for backwords compatibility. */ 40 41 /* Functions for the M32R ELF linker. */ 42 43 /* The name of the dynamic interpreter. This is put in the .interp 44 section. */ 45 46 #define ELF_DYNAMIC_INTERPRETER "/usr/lib/libc.so.1" 47 48 /* The nop opcode we use. */ 49 50 #define M32R_NOP 0x7000f000 51 52 #define PLT_EMPTY 0x10101010 /* RIE -> RIE */ 53 54 /* The size in bytes of an entry in the procedure linkage table. */ 55 56 #define PLT_ENTRY_SIZE 20 57 #define PLT_HEADER_SIZE 20 58 59 /* The first one entries in a procedure linkage table are reserved, 60 and the initial contents are unimportant (we zero them out). 61 Subsequent entries look like this. */ 62 63 #define PLT0_ENTRY_WORD0 0xd6c00000 /* seth r6, #high(.got+4) */ 64 #define PLT0_ENTRY_WORD1 0x86e60000 /* or3 r6, r6, #low(.got)+4) */ 65 #define PLT0_ENTRY_WORD2 0x24e626c6 /* ld r4, @r6+ -> ld r6, @r6 */ 66 #define PLT0_ENTRY_WORD3 0x1fc6f000 /* jmp r6 || pnop */ 67 #define PLT0_ENTRY_WORD4 PLT_EMPTY /* RIE -> RIE */ 68 69 #define PLT0_PIC_ENTRY_WORD0 0xa4cc0004 /* ld r4, @(4,r12) */ 70 #define PLT0_PIC_ENTRY_WORD1 0xa6cc0008 /* ld r6, @(8,r12) */ 71 #define PLT0_PIC_ENTRY_WORD2 0x1fc6f000 /* jmp r6 || nop */ 72 #define PLT0_PIC_ENTRY_WORD3 PLT_EMPTY /* RIE -> RIE */ 73 #define PLT0_PIC_ENTRY_WORD4 PLT_EMPTY /* RIE -> RIE */ 74 75 #define PLT_ENTRY_WORD0 0xe6000000 /* ld24 r6, .name_in_GOT */ 76 #define PLT_ENTRY_WORD1 0x06acf000 /* add r6, r12 || nop */ 77 #define PLT_ENTRY_WORD0b 0xd6c00000 /* seth r6, #high(.name_in_GOT) */ 78 #define PLT_ENTRY_WORD1b 0x86e60000 /* or3 r6, r6, #low(.name_in_GOT) */ 79 #define PLT_ENTRY_WORD2 0x26c61fc6 /* ld r6, @r6 -> jmp r6 */ 80 #define PLT_ENTRY_WORD3 0xe5000000 /* ld24 r5, $offset */ 81 #define PLT_ENTRY_WORD4 0xff000000 /* bra .plt0. */ 82 83 84 /* Utility to actually perform an R_M32R_10_PCREL reloc. */ 85 86 static bfd_reloc_status_type 87 m32r_elf_do_10_pcrel_reloc (bfd *abfd, 88 reloc_howto_type *howto, 89 asection *input_section, 90 bfd_byte *data, 91 bfd_vma offset, 92 asection *symbol_section ATTRIBUTE_UNUSED, 93 bfd_vma symbol_value, 94 bfd_vma addend) 95 { 96 bfd_signed_vma relocation; 97 unsigned long x; 98 bfd_reloc_status_type status; 99 100 /* Sanity check the address (offset in section). */ 101 if (offset > bfd_get_section_limit (abfd, input_section)) 102 return bfd_reloc_outofrange; 103 104 relocation = symbol_value + addend; 105 /* Make it pc relative. */ 106 relocation -= (input_section->output_section->vma 107 + input_section->output_offset); 108 /* These jumps mask off the lower two bits of the current address 109 before doing pcrel calculations. */ 110 relocation -= (offset & -(bfd_vma) 4); 111 112 if (relocation < -0x200 || relocation > 0x1ff) 113 status = bfd_reloc_overflow; 114 else 115 status = bfd_reloc_ok; 116 117 x = bfd_get_16 (abfd, data + offset); 118 relocation >>= howto->rightshift; 119 relocation <<= howto->bitpos; 120 x = (x & ~howto->dst_mask) | (((x & howto->src_mask) + relocation) & howto->dst_mask); 121 bfd_put_16 (abfd, (bfd_vma) x, data + offset); 122 123 return status; 124 } 125 126 /* Handle the R_M32R_10_PCREL reloc. */ 127 128 static bfd_reloc_status_type 129 m32r_elf_10_pcrel_reloc (bfd * abfd, 130 arelent * reloc_entry, 131 asymbol * symbol, 132 void * data, 133 asection * input_section, 134 bfd * output_bfd, 135 char ** error_message ATTRIBUTE_UNUSED) 136 { 137 /* This part is from bfd_elf_generic_reloc. */ 138 if (output_bfd != NULL 139 && (symbol->flags & BSF_SECTION_SYM) == 0 140 && (! reloc_entry->howto->partial_inplace 141 || reloc_entry->addend == 0)) 142 { 143 reloc_entry->address += input_section->output_offset; 144 return bfd_reloc_ok; 145 } 146 147 if (output_bfd != NULL) 148 /* FIXME: See bfd_perform_relocation. Is this right? */ 149 return bfd_reloc_continue; 150 151 return m32r_elf_do_10_pcrel_reloc (abfd, reloc_entry->howto, 152 input_section, 153 data, reloc_entry->address, 154 symbol->section, 155 (symbol->value 156 + symbol->section->output_section->vma 157 + symbol->section->output_offset), 158 reloc_entry->addend); 159 } 160 161 /* Do generic partial_inplace relocation. 162 This is a local replacement for bfd_elf_generic_reloc. */ 163 164 static bfd_reloc_status_type 165 m32r_elf_generic_reloc (bfd *input_bfd, 166 arelent *reloc_entry, 167 asymbol *symbol, 168 void * data, 169 asection *input_section, 170 bfd *output_bfd, 171 char **error_message ATTRIBUTE_UNUSED) 172 { 173 bfd_reloc_status_type ret; 174 bfd_vma relocation; 175 bfd_byte *inplace_address; 176 177 /* This part is from bfd_elf_generic_reloc. 178 If we're relocating, and this an external symbol, we don't want 179 to change anything. */ 180 if (output_bfd != NULL 181 && (symbol->flags & BSF_SECTION_SYM) == 0 182 && reloc_entry->addend == 0) 183 { 184 reloc_entry->address += input_section->output_offset; 185 return bfd_reloc_ok; 186 } 187 188 /* Now do the reloc in the usual way. 189 ??? It would be nice to call bfd_elf_generic_reloc here, 190 but we have partial_inplace set. bfd_elf_generic_reloc will 191 pass the handling back to bfd_install_relocation which will install 192 a section relative addend which is wrong. */ 193 194 /* Sanity check the address (offset in section). */ 195 if (reloc_entry->address > bfd_get_section_limit (input_bfd, input_section)) 196 return bfd_reloc_outofrange; 197 198 ret = bfd_reloc_ok; 199 if (bfd_is_und_section (symbol->section) 200 && output_bfd == NULL) 201 ret = bfd_reloc_undefined; 202 203 if (bfd_is_com_section (symbol->section) 204 || output_bfd != NULL) 205 relocation = 0; 206 else 207 relocation = symbol->value; 208 209 /* Only do this for a final link. */ 210 if (output_bfd == NULL) 211 { 212 relocation += symbol->section->output_section->vma; 213 relocation += symbol->section->output_offset; 214 } 215 216 relocation += reloc_entry->addend; 217 inplace_address = (bfd_byte *) data + reloc_entry->address; 218 219 #define DOIT(x) \ 220 x = ( (x & ~reloc_entry->howto->dst_mask) | \ 221 (((x & reloc_entry->howto->src_mask) + relocation) & \ 222 reloc_entry->howto->dst_mask)) 223 224 switch (reloc_entry->howto->size) 225 { 226 case 1: 227 { 228 short x = bfd_get_16 (input_bfd, inplace_address); 229 DOIT (x); 230 bfd_put_16 (input_bfd, (bfd_vma) x, inplace_address); 231 } 232 break; 233 case 2: 234 { 235 unsigned long x = bfd_get_32 (input_bfd, inplace_address); 236 DOIT (x); 237 bfd_put_32 (input_bfd, (bfd_vma)x , inplace_address); 238 } 239 break; 240 default: 241 BFD_ASSERT (0); 242 } 243 244 if (output_bfd != NULL) 245 reloc_entry->address += input_section->output_offset; 246 247 return ret; 248 } 249 250 /* Handle the R_M32R_SDA16 reloc. 251 This reloc is used to compute the address of objects in the small data area 252 and to perform loads and stores from that area. 253 The lower 16 bits are sign extended and added to the register specified 254 in the instruction, which is assumed to point to _SDA_BASE_. */ 255 256 static bfd_reloc_status_type 257 m32r_elf_sda16_reloc (bfd *abfd ATTRIBUTE_UNUSED, 258 arelent *reloc_entry, 259 asymbol *symbol, 260 void * data ATTRIBUTE_UNUSED, 261 asection *input_section, 262 bfd *output_bfd, 263 char **error_message ATTRIBUTE_UNUSED) 264 { 265 /* This part is from bfd_elf_generic_reloc. */ 266 if (output_bfd != NULL 267 && (symbol->flags & BSF_SECTION_SYM) == 0 268 && (! reloc_entry->howto->partial_inplace 269 || reloc_entry->addend == 0)) 270 { 271 reloc_entry->address += input_section->output_offset; 272 return bfd_reloc_ok; 273 } 274 275 if (output_bfd != NULL) 276 /* FIXME: See bfd_perform_relocation. Is this right? */ 277 return bfd_reloc_continue; 278 279 /* FIXME: not sure what to do here yet. But then again, the linker 280 may never call us. */ 281 abort (); 282 } 283 284 285 /* Handle the R_M32R_HI16_[SU]LO relocs. 286 HI16_SLO is for the add3 and load/store with displacement instructions. 287 HI16_ULO is for the or3 instruction. 288 For R_M32R_HI16_SLO, the lower 16 bits are sign extended when added to 289 the high 16 bytes so if the lower 16 bits are negative (bit 15 == 1) then 290 we must add one to the high 16 bytes (which will get subtracted off when 291 the low 16 bits are added). 292 These relocs have to be done in combination with an R_M32R_LO16 reloc 293 because there is a carry from the LO16 to the HI16. Here we just save 294 the information we need; we do the actual relocation when we see the LO16. 295 This code is copied from the elf32-mips.c. We also support an arbitrary 296 number of HI16 relocs to be associated with a single LO16 reloc. The 297 assembler sorts the relocs to ensure each HI16 immediately precedes its 298 LO16. However if there are multiple copies, the assembler may not find 299 the real LO16 so it picks the first one it finds. */ 300 301 struct m32r_hi16 302 { 303 struct m32r_hi16 *next; 304 bfd_byte *addr; 305 bfd_vma addend; 306 }; 307 308 /* FIXME: This should not be a static variable. */ 309 310 static struct m32r_hi16 *m32r_hi16_list; 311 312 static bfd_reloc_status_type 313 m32r_elf_hi16_reloc (bfd *abfd ATTRIBUTE_UNUSED, 314 arelent *reloc_entry, 315 asymbol *symbol, 316 void * data, 317 asection *input_section, 318 bfd *output_bfd, 319 char **error_message ATTRIBUTE_UNUSED) 320 { 321 bfd_reloc_status_type ret; 322 bfd_vma relocation; 323 struct m32r_hi16 *n; 324 325 /* This part is from bfd_elf_generic_reloc. 326 If we're relocating, and this an external symbol, we don't want 327 to change anything. */ 328 if (output_bfd != NULL 329 && (symbol->flags & BSF_SECTION_SYM) == 0 330 && reloc_entry->addend == 0) 331 { 332 reloc_entry->address += input_section->output_offset; 333 return bfd_reloc_ok; 334 } 335 336 /* Sanity check the address (offset in section). */ 337 if (reloc_entry->address > bfd_get_section_limit (abfd, input_section)) 338 return bfd_reloc_outofrange; 339 340 ret = bfd_reloc_ok; 341 if (bfd_is_und_section (symbol->section) 342 && output_bfd == NULL) 343 ret = bfd_reloc_undefined; 344 345 if (bfd_is_com_section (symbol->section)) 346 relocation = 0; 347 else 348 relocation = symbol->value; 349 350 relocation += symbol->section->output_section->vma; 351 relocation += symbol->section->output_offset; 352 relocation += reloc_entry->addend; 353 354 /* Save the information, and let LO16 do the actual relocation. */ 355 n = bfd_malloc ((bfd_size_type) sizeof *n); 356 if (n == NULL) 357 return bfd_reloc_outofrange; 358 n->addr = (bfd_byte *) data + reloc_entry->address; 359 n->addend = relocation; 360 n->next = m32r_hi16_list; 361 m32r_hi16_list = n; 362 363 if (output_bfd != NULL) 364 reloc_entry->address += input_section->output_offset; 365 366 return ret; 367 } 368 369 /* Handle an M32R ELF HI16 reloc. */ 370 371 static void 372 m32r_elf_relocate_hi16 (bfd *input_bfd, 373 int type, 374 Elf_Internal_Rela *relhi, 375 Elf_Internal_Rela *rello, 376 bfd_byte *contents, 377 bfd_vma addend) 378 { 379 unsigned long insn; 380 bfd_vma addlo; 381 382 insn = bfd_get_32 (input_bfd, contents + relhi->r_offset); 383 384 addlo = bfd_get_32 (input_bfd, contents + rello->r_offset); 385 if (type == R_M32R_HI16_SLO) 386 addlo = ((addlo & 0xffff) ^ 0x8000) - 0x8000; 387 else 388 addlo &= 0xffff; 389 390 addend += ((insn & 0xffff) << 16) + addlo; 391 392 /* Reaccount for sign extension of low part. */ 393 if (type == R_M32R_HI16_SLO 394 && (addend & 0x8000) != 0) 395 addend += 0x10000; 396 397 bfd_put_32 (input_bfd, 398 (insn & 0xffff0000) | ((addend >> 16) & 0xffff), 399 contents + relhi->r_offset); 400 } 401 402 /* Do an R_M32R_LO16 relocation. This is a straightforward 16 bit 403 inplace relocation; this function exists in order to do the 404 R_M32R_HI16_[SU]LO relocation described above. */ 405 406 static bfd_reloc_status_type 407 m32r_elf_lo16_reloc (bfd *input_bfd, 408 arelent *reloc_entry, 409 asymbol *symbol, 410 void * data, 411 asection *input_section, 412 bfd *output_bfd, 413 char **error_message) 414 { 415 /* This part is from bfd_elf_generic_reloc. 416 If we're relocating, and this an external symbol, we don't want 417 to change anything. */ 418 if (output_bfd != NULL 419 && (symbol->flags & BSF_SECTION_SYM) == 0 420 && reloc_entry->addend == 0) 421 { 422 reloc_entry->address += input_section->output_offset; 423 return bfd_reloc_ok; 424 } 425 426 if (m32r_hi16_list != NULL) 427 { 428 struct m32r_hi16 *l; 429 430 l = m32r_hi16_list; 431 while (l != NULL) 432 { 433 unsigned long insn; 434 unsigned long val; 435 unsigned long vallo; 436 struct m32r_hi16 *next; 437 438 /* Do the HI16 relocation. Note that we actually don't need 439 to know anything about the LO16 itself, except where to 440 find the low 16 bits of the addend needed by the LO16. */ 441 insn = bfd_get_32 (input_bfd, l->addr); 442 vallo = ((bfd_get_32 (input_bfd, (bfd_byte *) data + reloc_entry->address) 443 & 0xffff) ^ 0x8000) - 0x8000; 444 val = ((insn & 0xffff) << 16) + vallo; 445 val += l->addend; 446 447 /* Reaccount for sign extension of low part. */ 448 if ((val & 0x8000) != 0) 449 val += 0x10000; 450 451 insn = (insn &~ (bfd_vma) 0xffff) | ((val >> 16) & 0xffff); 452 bfd_put_32 (input_bfd, (bfd_vma) insn, l->addr); 453 454 next = l->next; 455 free (l); 456 l = next; 457 } 458 459 m32r_hi16_list = NULL; 460 } 461 462 /* Now do the LO16 reloc in the usual way. 463 ??? It would be nice to call bfd_elf_generic_reloc here, 464 but we have partial_inplace set. bfd_elf_generic_reloc will 465 pass the handling back to bfd_install_relocation which will install 466 a section relative addend which is wrong. */ 467 return m32r_elf_generic_reloc (input_bfd, reloc_entry, symbol, data, 468 input_section, output_bfd, error_message); 469 } 470 471 472 static reloc_howto_type m32r_elf_howto_table[] = 473 { 474 /* This reloc does nothing. */ 475 HOWTO (R_M32R_NONE, /* type */ 476 0, /* rightshift */ 477 3, /* size (0 = byte, 1 = short, 2 = long) */ 478 0, /* bitsize */ 479 FALSE, /* pc_relative */ 480 0, /* bitpos */ 481 complain_overflow_dont, /* complain_on_overflow */ 482 bfd_elf_generic_reloc, /* special_function */ 483 "R_M32R_NONE", /* name */ 484 FALSE, /* partial_inplace */ 485 0, /* src_mask */ 486 0, /* dst_mask */ 487 FALSE), /* pcrel_offset */ 488 489 /* A 16 bit absolute relocation. */ 490 HOWTO (R_M32R_16, /* type */ 491 0, /* rightshift */ 492 1, /* size (0 = byte, 1 = short, 2 = long) */ 493 16, /* bitsize */ 494 FALSE, /* pc_relative */ 495 0, /* bitpos */ 496 complain_overflow_bitfield, /* complain_on_overflow */ 497 m32r_elf_generic_reloc,/* special_function */ 498 "R_M32R_16", /* name */ 499 TRUE, /* partial_inplace */ 500 0xffff, /* src_mask */ 501 0xffff, /* dst_mask */ 502 FALSE), /* pcrel_offset */ 503 504 /* A 32 bit absolute relocation. */ 505 HOWTO (R_M32R_32, /* type */ 506 0, /* rightshift */ 507 2, /* size (0 = byte, 1 = short, 2 = long) */ 508 32, /* bitsize */ 509 FALSE, /* pc_relative */ 510 0, /* bitpos */ 511 complain_overflow_bitfield, /* complain_on_overflow */ 512 m32r_elf_generic_reloc,/* special_function */ 513 "R_M32R_32", /* name */ 514 TRUE, /* partial_inplace */ 515 0xffffffff, /* src_mask */ 516 0xffffffff, /* dst_mask */ 517 FALSE), /* pcrel_offset */ 518 519 /* A 24 bit address. */ 520 HOWTO (R_M32R_24, /* type */ 521 0, /* rightshift */ 522 2, /* size (0 = byte, 1 = short, 2 = long) */ 523 24, /* bitsize */ 524 FALSE, /* pc_relative */ 525 0, /* bitpos */ 526 complain_overflow_unsigned, /* complain_on_overflow */ 527 m32r_elf_generic_reloc,/* special_function */ 528 "R_M32R_24", /* name */ 529 TRUE, /* partial_inplace */ 530 0xffffff, /* src_mask */ 531 0xffffff, /* dst_mask */ 532 FALSE), /* pcrel_offset */ 533 534 /* An PC Relative 10-bit relocation, shifted by 2. 535 This reloc is complicated because relocations are relative to pc & -4. 536 i.e. branches in the right insn slot use the address of the left insn 537 slot for pc. */ 538 /* ??? It's not clear whether this should have partial_inplace set or not. 539 Branch relaxing in the assembler can store the addend in the insn, 540 and if bfd_install_relocation gets called the addend may get added 541 again. */ 542 HOWTO (R_M32R_10_PCREL, /* type */ 543 2, /* rightshift */ 544 1, /* size (0 = byte, 1 = short, 2 = long) */ 545 10, /* bitsize */ 546 TRUE, /* pc_relative */ 547 0, /* bitpos */ 548 complain_overflow_signed, /* complain_on_overflow */ 549 m32r_elf_10_pcrel_reloc, /* special_function */ 550 "R_M32R_10_PCREL", /* name */ 551 FALSE, /* partial_inplace */ 552 0xff, /* src_mask */ 553 0xff, /* dst_mask */ 554 TRUE), /* pcrel_offset */ 555 556 /* A relative 18 bit relocation, right shifted by 2. */ 557 HOWTO (R_M32R_18_PCREL, /* type */ 558 2, /* rightshift */ 559 2, /* size (0 = byte, 1 = short, 2 = long) */ 560 16, /* bitsize */ 561 TRUE, /* pc_relative */ 562 0, /* bitpos */ 563 complain_overflow_signed, /* complain_on_overflow */ 564 bfd_elf_generic_reloc, /* special_function */ 565 "R_M32R_18_PCREL", /* name */ 566 FALSE, /* partial_inplace */ 567 0xffff, /* src_mask */ 568 0xffff, /* dst_mask */ 569 TRUE), /* pcrel_offset */ 570 571 /* A relative 26 bit relocation, right shifted by 2. */ 572 /* ??? It's not clear whether this should have partial_inplace set or not. 573 Branch relaxing in the assembler can store the addend in the insn, 574 and if bfd_install_relocation gets called the addend may get added 575 again. */ 576 HOWTO (R_M32R_26_PCREL, /* type */ 577 2, /* rightshift */ 578 2, /* size (0 = byte, 1 = short, 2 = long) */ 579 26, /* bitsize */ 580 TRUE, /* pc_relative */ 581 0, /* bitpos */ 582 complain_overflow_signed, /* complain_on_overflow */ 583 bfd_elf_generic_reloc, /* special_function */ 584 "R_M32R_26_PCREL", /* name */ 585 FALSE, /* partial_inplace */ 586 0xffffff, /* src_mask */ 587 0xffffff, /* dst_mask */ 588 TRUE), /* pcrel_offset */ 589 590 /* High 16 bits of address when lower 16 is or'd in. */ 591 HOWTO (R_M32R_HI16_ULO, /* type */ 592 16, /* rightshift */ 593 2, /* size (0 = byte, 1 = short, 2 = long) */ 594 16, /* bitsize */ 595 FALSE, /* pc_relative */ 596 0, /* bitpos */ 597 complain_overflow_dont, /* complain_on_overflow */ 598 m32r_elf_hi16_reloc, /* special_function */ 599 "R_M32R_HI16_ULO", /* name */ 600 TRUE, /* partial_inplace */ 601 0x0000ffff, /* src_mask */ 602 0x0000ffff, /* dst_mask */ 603 FALSE), /* pcrel_offset */ 604 605 /* High 16 bits of address when lower 16 is added in. */ 606 HOWTO (R_M32R_HI16_SLO, /* type */ 607 16, /* rightshift */ 608 2, /* size (0 = byte, 1 = short, 2 = long) */ 609 16, /* bitsize */ 610 FALSE, /* pc_relative */ 611 0, /* bitpos */ 612 complain_overflow_dont, /* complain_on_overflow */ 613 m32r_elf_hi16_reloc, /* special_function */ 614 "R_M32R_HI16_SLO", /* name */ 615 TRUE, /* partial_inplace */ 616 0x0000ffff, /* src_mask */ 617 0x0000ffff, /* dst_mask */ 618 FALSE), /* pcrel_offset */ 619 620 /* Lower 16 bits of address. */ 621 HOWTO (R_M32R_LO16, /* type */ 622 0, /* rightshift */ 623 2, /* size (0 = byte, 1 = short, 2 = long) */ 624 16, /* bitsize */ 625 FALSE, /* pc_relative */ 626 0, /* bitpos */ 627 complain_overflow_dont, /* complain_on_overflow */ 628 m32r_elf_lo16_reloc, /* special_function */ 629 "R_M32R_LO16", /* name */ 630 TRUE, /* partial_inplace */ 631 0x0000ffff, /* src_mask */ 632 0x0000ffff, /* dst_mask */ 633 FALSE), /* pcrel_offset */ 634 635 /* Small data area 16 bits offset. */ 636 HOWTO (R_M32R_SDA16, /* type */ 637 0, /* rightshift */ 638 2, /* size (0 = byte, 1 = short, 2 = long) */ 639 16, /* bitsize */ 640 FALSE, /* pc_relative */ 641 0, /* bitpos */ 642 complain_overflow_signed, /* complain_on_overflow */ 643 m32r_elf_sda16_reloc, /* special_function */ 644 "R_M32R_SDA16", /* name */ 645 TRUE, /* partial_inplace */ /* FIXME: correct? */ 646 0x0000ffff, /* src_mask */ 647 0x0000ffff, /* dst_mask */ 648 FALSE), /* pcrel_offset */ 649 650 /* GNU extension to record C++ vtable hierarchy. */ 651 HOWTO (R_M32R_GNU_VTINHERIT, /* type */ 652 0, /* rightshift */ 653 2, /* size (0 = byte, 1 = short, 2 = long) */ 654 0, /* bitsize */ 655 FALSE, /* pc_relative */ 656 0, /* bitpos */ 657 complain_overflow_dont, /* complain_on_overflow */ 658 NULL, /* special_function */ 659 "R_M32R_GNU_VTINHERIT", /* name */ 660 FALSE, /* partial_inplace */ 661 0, /* src_mask */ 662 0, /* dst_mask */ 663 FALSE), /* pcrel_offset */ 664 665 /* GNU extension to record C++ vtable member usage. */ 666 HOWTO (R_M32R_GNU_VTENTRY, /* type */ 667 0, /* rightshift */ 668 2, /* size (0 = byte, 1 = short, 2 = long) */ 669 0, /* bitsize */ 670 FALSE, /* pc_relative */ 671 0, /* bitpos */ 672 complain_overflow_dont, /* complain_on_overflow */ 673 _bfd_elf_rel_vtable_reloc_fn, /* special_function */ 674 "R_M32R_GNU_VTENTRY", /* name */ 675 FALSE, /* partial_inplace */ 676 0, /* src_mask */ 677 0, /* dst_mask */ 678 FALSE), /* pcrel_offset */ 679 680 EMPTY_HOWTO (13), 681 EMPTY_HOWTO (14), 682 EMPTY_HOWTO (15), 683 EMPTY_HOWTO (16), 684 EMPTY_HOWTO (17), 685 EMPTY_HOWTO (18), 686 EMPTY_HOWTO (19), 687 EMPTY_HOWTO (20), 688 EMPTY_HOWTO (21), 689 EMPTY_HOWTO (22), 690 EMPTY_HOWTO (23), 691 EMPTY_HOWTO (24), 692 EMPTY_HOWTO (25), 693 EMPTY_HOWTO (26), 694 EMPTY_HOWTO (27), 695 EMPTY_HOWTO (28), 696 EMPTY_HOWTO (29), 697 EMPTY_HOWTO (30), 698 EMPTY_HOWTO (31), 699 EMPTY_HOWTO (32), 700 701 /* A 16 bit absolute relocation. */ 702 HOWTO (R_M32R_16_RELA, /* type */ 703 0, /* rightshift */ 704 1, /* size (0 = byte, 1 = short, 2 = long) */ 705 16, /* bitsize */ 706 FALSE, /* pc_relative */ 707 0, /* bitpos */ 708 complain_overflow_bitfield, /* complain_on_overflow */ 709 bfd_elf_generic_reloc, /* special_function */ 710 "R_M32R_16_RELA", /* name */ 711 FALSE, /* partial_inplace */ 712 0xffff, /* src_mask */ 713 0xffff, /* dst_mask */ 714 FALSE), /* pcrel_offset */ 715 716 /* A 32 bit absolute relocation. */ 717 HOWTO (R_M32R_32_RELA, /* type */ 718 0, /* rightshift */ 719 2, /* size (0 = byte, 1 = short, 2 = long) */ 720 32, /* bitsize */ 721 FALSE, /* pc_relative */ 722 0, /* bitpos */ 723 complain_overflow_bitfield, /* complain_on_overflow */ 724 bfd_elf_generic_reloc,/* special_function */ 725 "R_M32R_32_RELA", /* name */ 726 FALSE, /* partial_inplace */ 727 0xffffffff, /* src_mask */ 728 0xffffffff, /* dst_mask */ 729 FALSE), /* pcrel_offset */ 730 731 /* A 24 bit address. */ 732 HOWTO (R_M32R_24_RELA, /* type */ 733 0, /* rightshift */ 734 2, /* size (0 = byte, 1 = short, 2 = long) */ 735 24, /* bitsize */ 736 FALSE, /* pc_relative */ 737 0, /* bitpos */ 738 complain_overflow_unsigned, /* complain_on_overflow */ 739 bfd_elf_generic_reloc,/* special_function */ 740 "R_M32R_24_RELA", /* name */ 741 FALSE, /* partial_inplace */ 742 0xffffff, /* src_mask */ 743 0xffffff, /* dst_mask */ 744 FALSE), /* pcrel_offset */ 745 746 HOWTO (R_M32R_10_PCREL_RELA, /* type */ 747 2, /* rightshift */ 748 1, /* size (0 = byte, 1 = short, 2 = long) */ 749 10, /* bitsize */ 750 TRUE, /* pc_relative */ 751 0, /* bitpos */ 752 complain_overflow_signed, /* complain_on_overflow */ 753 m32r_elf_10_pcrel_reloc, /* special_function */ 754 "R_M32R_10_PCREL_RELA",/* name */ 755 FALSE, /* partial_inplace */ 756 0xff, /* src_mask */ 757 0xff, /* dst_mask */ 758 TRUE), /* pcrel_offset */ 759 760 /* A relative 18 bit relocation, right shifted by 2. */ 761 HOWTO (R_M32R_18_PCREL_RELA, /* type */ 762 2, /* rightshift */ 763 2, /* size (0 = byte, 1 = short, 2 = long) */ 764 16, /* bitsize */ 765 TRUE, /* pc_relative */ 766 0, /* bitpos */ 767 complain_overflow_signed, /* complain_on_overflow */ 768 bfd_elf_generic_reloc, /* special_function */ 769 "R_M32R_18_PCREL_RELA",/* name */ 770 FALSE, /* partial_inplace */ 771 0xffff, /* src_mask */ 772 0xffff, /* dst_mask */ 773 TRUE), /* pcrel_offset */ 774 775 /* A relative 26 bit relocation, right shifted by 2. */ 776 HOWTO (R_M32R_26_PCREL_RELA, /* type */ 777 2, /* rightshift */ 778 2, /* size (0 = byte, 1 = short, 2 = long) */ 779 26, /* bitsize */ 780 TRUE, /* pc_relative */ 781 0, /* bitpos */ 782 complain_overflow_signed, /* complain_on_overflow */ 783 bfd_elf_generic_reloc, /* special_function */ 784 "R_M32R_26_PCREL_RELA",/* name */ 785 FALSE, /* partial_inplace */ 786 0xffffff, /* src_mask */ 787 0xffffff, /* dst_mask */ 788 TRUE), /* pcrel_offset */ 789 790 /* High 16 bits of address when lower 16 is or'd in. */ 791 HOWTO (R_M32R_HI16_ULO_RELA, /* type */ 792 16, /* rightshift */ 793 2, /* size (0 = byte, 1 = short, 2 = long) */ 794 16, /* bitsize */ 795 FALSE, /* pc_relative */ 796 0, /* bitpos */ 797 complain_overflow_dont, /* complain_on_overflow */ 798 bfd_elf_generic_reloc, /* special_function */ 799 "R_M32R_HI16_ULO_RELA",/* name */ 800 FALSE, /* partial_inplace */ 801 0x0000ffff, /* src_mask */ 802 0x0000ffff, /* dst_mask */ 803 FALSE), /* pcrel_offset */ 804 805 /* High 16 bits of address when lower 16 is added in. */ 806 HOWTO (R_M32R_HI16_SLO_RELA, /* type */ 807 16, /* rightshift */ 808 2, /* size (0 = byte, 1 = short, 2 = long) */ 809 16, /* bitsize */ 810 FALSE, /* pc_relative */ 811 0, /* bitpos */ 812 complain_overflow_dont, /* complain_on_overflow */ 813 bfd_elf_generic_reloc, /* special_function */ 814 "R_M32R_HI16_SLO_RELA",/* name */ 815 FALSE, /* partial_inplace */ 816 0x0000ffff, /* src_mask */ 817 0x0000ffff, /* dst_mask */ 818 FALSE), /* pcrel_offset */ 819 820 /* Lower 16 bits of address. */ 821 HOWTO (R_M32R_LO16_RELA, /* type */ 822 0, /* rightshift */ 823 2, /* size (0 = byte, 1 = short, 2 = long) */ 824 16, /* bitsize */ 825 FALSE, /* pc_relative */ 826 0, /* bitpos */ 827 complain_overflow_dont, /* complain_on_overflow */ 828 bfd_elf_generic_reloc, /* special_function */ 829 "R_M32R_LO16_RELA", /* name */ 830 FALSE, /* partial_inplace */ 831 0x0000ffff, /* src_mask */ 832 0x0000ffff, /* dst_mask */ 833 FALSE), /* pcrel_offset */ 834 835 /* Small data area 16 bits offset. */ 836 HOWTO (R_M32R_SDA16_RELA, /* type */ 837 0, /* rightshift */ 838 2, /* size (0 = byte, 1 = short, 2 = long) */ 839 16, /* bitsize */ 840 FALSE, /* pc_relative */ 841 0, /* bitpos */ 842 complain_overflow_signed, /* complain_on_overflow */ 843 bfd_elf_generic_reloc, /* special_function */ 844 "R_M32R_SDA16_RELA", /* name */ 845 TRUE, /* partial_inplace */ /* FIXME: correct? */ 846 0x0000ffff, /* src_mask */ 847 0x0000ffff, /* dst_mask */ 848 FALSE), /* pcrel_offset */ 849 850 /* GNU extension to record C++ vtable hierarchy. */ 851 HOWTO (R_M32R_RELA_GNU_VTINHERIT, /* type */ 852 0, /* rightshift */ 853 2, /* size (0 = byte, 1 = short, 2 = long) */ 854 0, /* bitsize */ 855 FALSE, /* pc_relative */ 856 0, /* bitpos */ 857 complain_overflow_dont, /* complain_on_overflow */ 858 NULL, /* special_function */ 859 "R_M32R_RELA_GNU_VTINHERIT", /* name */ 860 FALSE, /* partial_inplace */ 861 0, /* src_mask */ 862 0, /* dst_mask */ 863 FALSE), /* pcrel_offset */ 864 865 /* GNU extension to record C++ vtable member usage. */ 866 HOWTO (R_M32R_RELA_GNU_VTENTRY, /* type */ 867 0, /* rightshift */ 868 2, /* size (0 = byte, 1 = short, 2 = long) */ 869 0, /* bitsize */ 870 FALSE, /* pc_relative */ 871 0, /* bitpos */ 872 complain_overflow_dont, /* complain_on_overflow */ 873 _bfd_elf_rel_vtable_reloc_fn, /* special_function */ 874 "R_M32R_RELA_GNU_VTENTRY", /* name */ 875 FALSE, /* partial_inplace */ 876 0, /* src_mask */ 877 0, /* dst_mask */ 878 FALSE), /* pcrel_offset */ 879 880 /* A 32 bit PC relative relocation. */ 881 HOWTO (R_M32R_REL32, /* type */ 882 0, /* rightshift */ 883 2, /* size (0 = byte, 1 = short, 2 = long) */ 884 32, /* bitsize */ 885 TRUE, /* pc_relative */ 886 0, /* bitpos */ 887 complain_overflow_bitfield, /* complain_on_overflow */ 888 bfd_elf_generic_reloc,/* special_function */ 889 "R_M32R_REL32", /* name */ 890 FALSE, /* partial_inplace */ 891 0xffffffff, /* src_mask */ 892 0xffffffff, /* dst_mask */ 893 TRUE), /* pcrel_offset */ 894 895 EMPTY_HOWTO (46), 896 EMPTY_HOWTO (47), 897 898 /* Like R_M32R_24, but referring to the GOT table entry for 899 the symbol. */ 900 HOWTO (R_M32R_GOT24, /* type */ 901 0, /* rightshift */ 902 2, /* size (0 = byte, 1 = short, 2 = long) */ 903 24, /* bitsize */ 904 FALSE, /* pc_relative */ 905 0, /* bitpos */ 906 complain_overflow_unsigned, /* complain_on_overflow */ 907 bfd_elf_generic_reloc, /* special_function */ 908 "R_M32R_GOT24", /* name */ 909 FALSE, /* partial_inplace */ 910 0xffffff, /* src_mask */ 911 0xffffff, /* dst_mask */ 912 FALSE), /* pcrel_offset */ 913 914 /* Like R_M32R_PCREL, but referring to the procedure linkage table 915 entry for the symbol. */ 916 HOWTO (R_M32R_26_PLTREL, /* type */ 917 2, /* rightshift */ 918 2, /* size (0 = byte, 1 = short, 2 = long) */ 919 24, /* bitsize */ 920 TRUE, /* pc_relative */ 921 0, /* bitpos */ 922 complain_overflow_signed, /* complain_on_overflow */ 923 bfd_elf_generic_reloc, /* special_function */ 924 "R_M32R_26_PLTREL", /* name */ 925 FALSE, /* partial_inplace */ 926 0xffffff, /* src_mask */ 927 0xffffff, /* dst_mask */ 928 TRUE), /* pcrel_offset */ 929 930 /* This is used only by the dynamic linker. The symbol should exist 931 both in the object being run and in some shared library. The 932 dynamic linker copies the data addressed by the symbol from the 933 shared library into the object, because the object being 934 run has to have the data at some particular address. */ 935 HOWTO (R_M32R_COPY, /* type */ 936 0, /* rightshift */ 937 2, /* size (0 = byte, 1 = short, 2 = long) */ 938 32, /* bitsize */ 939 FALSE, /* pc_relative */ 940 0, /* bitpos */ 941 complain_overflow_bitfield, /* complain_on_overflow */ 942 bfd_elf_generic_reloc, /* special_function */ 943 "R_M32R_COPY", /* name */ 944 FALSE, /* partial_inplace */ 945 0xffffffff, /* src_mask */ 946 0xffffffff, /* dst_mask */ 947 FALSE), /* pcrel_offset */ 948 949 /* Like R_M32R_24, but used when setting global offset table 950 entries. */ 951 HOWTO (R_M32R_GLOB_DAT, /* type */ 952 0, /* rightshift */ 953 2, /* size (0 = byte, 1 = short, 2 = long) */ 954 32, /* bitsize */ 955 FALSE, /* pc_relative */ 956 0, /* bitpos */ 957 complain_overflow_bitfield, /* complain_on_overflow */ 958 bfd_elf_generic_reloc, /* special_function */ 959 "R_M32R_GLOB_DAT", /* name */ 960 FALSE, /* partial_inplace */ 961 0xffffffff, /* src_mask */ 962 0xffffffff, /* dst_mask */ 963 FALSE), /* pcrel_offset */ 964 965 /* Marks a procedure linkage table entry for a symbol. */ 966 HOWTO (R_M32R_JMP_SLOT, /* type */ 967 0, /* rightshift */ 968 2, /* size (0 = byte, 1 = short, 2 = long) */ 969 32, /* bitsize */ 970 FALSE, /* pc_relative */ 971 0, /* bitpos */ 972 complain_overflow_bitfield, /* complain_on_overflow */ 973 bfd_elf_generic_reloc, /* special_function */ 974 "R_M32R_JMP_SLOT", /* name */ 975 FALSE, /* partial_inplace */ 976 0xffffffff, /* src_mask */ 977 0xffffffff, /* dst_mask */ 978 FALSE), /* pcrel_offset */ 979 980 /* Used only by the dynamic linker. When the object is run, this 981 longword is set to the load address of the object, plus the 982 addend. */ 983 HOWTO (R_M32R_RELATIVE, /* type */ 984 0, /* rightshift */ 985 2, /* size (0 = byte, 1 = short, 2 = long) */ 986 32, /* bitsize */ 987 FALSE, /* pc_relative */ 988 0, /* bitpos */ 989 complain_overflow_bitfield, /* complain_on_overflow */ 990 bfd_elf_generic_reloc, /* special_function */ 991 "R_M32R_RELATIVE", /* name */ 992 FALSE, /* partial_inplace */ 993 0xffffffff, /* src_mask */ 994 0xffffffff, /* dst_mask */ 995 FALSE), /* pcrel_offset */ 996 997 HOWTO (R_M32R_GOTOFF, /* type */ 998 0, /* rightshift */ 999 2, /* size (0 = byte, 1 = short, 2 = long) */ 1000 24, /* bitsize */ 1001 FALSE, /* pc_relative */ 1002 0, /* bitpos */ 1003 complain_overflow_bitfield, /* complain_on_overflow */ 1004 bfd_elf_generic_reloc, /* special_function */ 1005 "R_M32R_GOTOFF", /* name */ 1006 FALSE, /* partial_inplace */ 1007 0xffffff, /* src_mask */ 1008 0xffffff, /* dst_mask */ 1009 FALSE), /* pcrel_offset */ 1010 1011 /* An PC Relative 24-bit relocation used when setting PIC offset 1012 table register. */ 1013 HOWTO (R_M32R_GOTPC24, /* type */ 1014 0, /* rightshift */ 1015 2, /* size (0 = byte, 1 = short, 2 = long) */ 1016 24, /* bitsize */ 1017 TRUE, /* pc_relative */ 1018 0, /* bitpos */ 1019 complain_overflow_unsigned, /* complain_on_overflow */ 1020 bfd_elf_generic_reloc, /* special_function */ 1021 "R_M32R_GOTPC24", /* name */ 1022 FALSE, /* partial_inplace */ 1023 0xffffff, /* src_mask */ 1024 0xffffff, /* dst_mask */ 1025 TRUE), /* pcrel_offset */ 1026 1027 /* Like R_M32R_HI16_ULO, but referring to the GOT table entry for 1028 the symbol. */ 1029 HOWTO (R_M32R_GOT16_HI_ULO, /* type */ 1030 16, /* rightshift */ 1031 2, /* size (0 = byte, 1 = short, 2 = long) */ 1032 16, /* bitsize */ 1033 FALSE, /* pc_relative */ 1034 0, /* bitpos */ 1035 complain_overflow_dont, /* complain_on_overflow */ 1036 bfd_elf_generic_reloc, /* special_function */ 1037 "R_M32R_GOT16_HI_ULO", /* name */ 1038 FALSE, /* partial_inplace */ 1039 0x0000ffff, /* src_mask */ 1040 0x0000ffff, /* dst_mask */ 1041 FALSE), /* pcrel_offset */ 1042 1043 /* Like R_M32R_HI16_SLO, but referring to the GOT table entry for 1044 the symbol. */ 1045 HOWTO (R_M32R_GOT16_HI_SLO, /* type */ 1046 16, /* rightshift */ 1047 2, /* size (0 = byte, 1 = short, 2 = long) */ 1048 16, /* bitsize */ 1049 FALSE, /* pc_relative */ 1050 0, /* bitpos */ 1051 complain_overflow_dont, /* complain_on_overflow */ 1052 bfd_elf_generic_reloc, /* special_function */ 1053 "R_M32R_GOT16_HI_SLO", /* name */ 1054 FALSE, /* partial_inplace */ 1055 0x0000ffff, /* src_mask */ 1056 0x0000ffff, /* dst_mask */ 1057 FALSE), /* pcrel_offset */ 1058 1059 /* Like R_M32R_LO16, but referring to the GOT table entry for 1060 the symbol. */ 1061 HOWTO (R_M32R_GOT16_LO, /* type */ 1062 0, /* rightshift */ 1063 2, /* size (0 = byte, 1 = short, 2 = long) */ 1064 16, /* bitsize */ 1065 FALSE, /* pc_relative */ 1066 0, /* bitpos */ 1067 complain_overflow_dont, /* complain_on_overflow */ 1068 bfd_elf_generic_reloc, /* special_function */ 1069 "R_M32R_GOT16_LO", /* name */ 1070 FALSE, /* partial_inplace */ 1071 0x0000ffff, /* src_mask */ 1072 0x0000ffff, /* dst_mask */ 1073 FALSE), /* pcrel_offset */ 1074 1075 /* An PC Relative relocation used when setting PIC offset table register. 1076 Like R_M32R_HI16_ULO, but referring to the GOT table entry for 1077 the symbol. */ 1078 HOWTO (R_M32R_GOTPC_HI_ULO, /* type */ 1079 16, /* rightshift */ 1080 2, /* size (0 = byte, 1 = short, 2 = long) */ 1081 16, /* bitsize */ 1082 FALSE, /* pc_relative */ 1083 0, /* bitpos */ 1084 complain_overflow_dont, /* complain_on_overflow */ 1085 bfd_elf_generic_reloc, /* special_function */ 1086 "R_M32R_GOTPC_HI_ULO", /* name */ 1087 FALSE, /* partial_inplace */ 1088 0x0000ffff, /* src_mask */ 1089 0x0000ffff, /* dst_mask */ 1090 TRUE), /* pcrel_offset */ 1091 1092 /* An PC Relative relocation used when setting PIC offset table register. 1093 Like R_M32R_HI16_SLO, but referring to the GOT table entry for 1094 the symbol. */ 1095 HOWTO (R_M32R_GOTPC_HI_SLO, /* type */ 1096 16, /* rightshift */ 1097 2, /* size (0 = byte, 1 = short, 2 = long) */ 1098 16, /* bitsize */ 1099 FALSE, /* pc_relative */ 1100 0, /* bitpos */ 1101 complain_overflow_dont, /* complain_on_overflow */ 1102 bfd_elf_generic_reloc, /* special_function */ 1103 "R_M32R_GOTPC_HI_SLO", /* name */ 1104 FALSE, /* partial_inplace */ 1105 0x0000ffff, /* src_mask */ 1106 0x0000ffff, /* dst_mask */ 1107 TRUE), /* pcrel_offset */ 1108 1109 /* An PC Relative relocation used when setting PIC offset table register. 1110 Like R_M32R_LO16, but referring to the GOT table entry for 1111 the symbol. */ 1112 HOWTO (R_M32R_GOTPC_LO, /* type */ 1113 0, /* rightshift */ 1114 2, /* size (0 = byte, 1 = short, 2 = long) */ 1115 16, /* bitsize */ 1116 FALSE, /* pc_relative */ 1117 0, /* bitpos */ 1118 complain_overflow_dont, /* complain_on_overflow */ 1119 bfd_elf_generic_reloc, /* special_function */ 1120 "R_M32R_GOTPC_LO", /* name */ 1121 FALSE, /* partial_inplace */ 1122 0x0000ffff, /* src_mask */ 1123 0x0000ffff, /* dst_mask */ 1124 TRUE), /* pcrel_offset */ 1125 1126 HOWTO (R_M32R_GOTOFF_HI_ULO, /* type */ 1127 16, /* rightshift */ 1128 2, /* size (0 = byte, 1 = short, 2 = long) */ 1129 16, /* bitsize */ 1130 FALSE, /* pc_relative */ 1131 0, /* bitpos */ 1132 complain_overflow_dont, /* complain_on_overflow */ 1133 bfd_elf_generic_reloc, /* special_function */ 1134 "R_M32R_GOTOFF_HI_ULO",/* name */ 1135 FALSE, /* partial_inplace */ 1136 0x0000ffff, /* src_mask */ 1137 0x0000ffff, /* dst_mask */ 1138 FALSE), /* pcrel_offset */ 1139 1140 HOWTO (R_M32R_GOTOFF_HI_SLO, /* type */ 1141 16, /* rightshift */ 1142 2, /* size (0 = byte, 1 = short, 2 = long) */ 1143 16, /* bitsize */ 1144 FALSE, /* pc_relative */ 1145 0, /* bitpos */ 1146 complain_overflow_dont, /* complain_on_overflow */ 1147 bfd_elf_generic_reloc, /* special_function */ 1148 "R_M32R_GOTOFF_HI_SLO",/* name */ 1149 FALSE, /* partial_inplace */ 1150 0x0000ffff, /* src_mask */ 1151 0x0000ffff, /* dst_mask */ 1152 FALSE), /* pcrel_offset */ 1153 1154 HOWTO (R_M32R_GOTOFF_LO, /* type */ 1155 0, /* rightshift */ 1156 2, /* size (0 = byte, 1 = short, 2 = long) */ 1157 16, /* bitsize */ 1158 FALSE, /* pc_relative */ 1159 0, /* bitpos */ 1160 complain_overflow_dont, /* complain_on_overflow */ 1161 bfd_elf_generic_reloc, /* special_function */ 1162 "R_M32R_GOTOFF_LO", /* name */ 1163 FALSE, /* partial_inplace */ 1164 0x0000ffff, /* src_mask */ 1165 0x0000ffff, /* dst_mask */ 1166 FALSE), /* pcrel_offset */ 1167 }; 1168 1169 /* Map BFD reloc types to M32R ELF reloc types. */ 1170 1171 struct m32r_reloc_map 1172 { 1173 bfd_reloc_code_real_type bfd_reloc_val; 1174 unsigned char elf_reloc_val; 1175 }; 1176 1177 #ifdef USE_M32R_OLD_RELOC 1178 static const struct m32r_reloc_map m32r_reloc_map_old[] = 1179 { 1180 { BFD_RELOC_NONE, R_M32R_NONE }, 1181 { BFD_RELOC_16, R_M32R_16 }, 1182 { BFD_RELOC_32, R_M32R_32 }, 1183 { BFD_RELOC_M32R_24, R_M32R_24 }, 1184 { BFD_RELOC_M32R_10_PCREL, R_M32R_10_PCREL }, 1185 { BFD_RELOC_M32R_18_PCREL, R_M32R_18_PCREL }, 1186 { BFD_RELOC_M32R_26_PCREL, R_M32R_26_PCREL }, 1187 { BFD_RELOC_M32R_HI16_ULO, R_M32R_HI16_ULO }, 1188 { BFD_RELOC_M32R_HI16_SLO, R_M32R_HI16_SLO }, 1189 { BFD_RELOC_M32R_LO16, R_M32R_LO16 }, 1190 { BFD_RELOC_M32R_SDA16, R_M32R_SDA16 }, 1191 { BFD_RELOC_VTABLE_INHERIT, R_M32R_GNU_VTINHERIT }, 1192 { BFD_RELOC_VTABLE_ENTRY, R_M32R_GNU_VTENTRY }, 1193 }; 1194 #else 1195 static const struct m32r_reloc_map m32r_reloc_map[] = 1196 { 1197 { BFD_RELOC_NONE, R_M32R_NONE }, 1198 { BFD_RELOC_16, R_M32R_16_RELA }, 1199 { BFD_RELOC_32, R_M32R_32_RELA }, 1200 { BFD_RELOC_M32R_24, R_M32R_24_RELA }, 1201 { BFD_RELOC_M32R_10_PCREL, R_M32R_10_PCREL_RELA }, 1202 { BFD_RELOC_M32R_18_PCREL, R_M32R_18_PCREL_RELA }, 1203 { BFD_RELOC_M32R_26_PCREL, R_M32R_26_PCREL_RELA }, 1204 { BFD_RELOC_M32R_HI16_ULO, R_M32R_HI16_ULO_RELA }, 1205 { BFD_RELOC_M32R_HI16_SLO, R_M32R_HI16_SLO_RELA }, 1206 { BFD_RELOC_M32R_LO16, R_M32R_LO16_RELA }, 1207 { BFD_RELOC_M32R_SDA16, R_M32R_SDA16_RELA }, 1208 { BFD_RELOC_VTABLE_INHERIT, R_M32R_RELA_GNU_VTINHERIT }, 1209 { BFD_RELOC_VTABLE_ENTRY, R_M32R_RELA_GNU_VTENTRY }, 1210 { BFD_RELOC_32_PCREL, R_M32R_REL32 }, 1211 1212 { BFD_RELOC_M32R_GOT24, R_M32R_GOT24 }, 1213 { BFD_RELOC_M32R_26_PLTREL, R_M32R_26_PLTREL }, 1214 { BFD_RELOC_M32R_COPY, R_M32R_COPY }, 1215 { BFD_RELOC_M32R_GLOB_DAT, R_M32R_GLOB_DAT }, 1216 { BFD_RELOC_M32R_JMP_SLOT, R_M32R_JMP_SLOT }, 1217 { BFD_RELOC_M32R_RELATIVE, R_M32R_RELATIVE }, 1218 { BFD_RELOC_M32R_GOTOFF, R_M32R_GOTOFF }, 1219 { BFD_RELOC_M32R_GOTPC24, R_M32R_GOTPC24 }, 1220 { BFD_RELOC_M32R_GOT16_HI_ULO, R_M32R_GOT16_HI_ULO }, 1221 { BFD_RELOC_M32R_GOT16_HI_SLO, R_M32R_GOT16_HI_SLO }, 1222 { BFD_RELOC_M32R_GOT16_LO, R_M32R_GOT16_LO }, 1223 { BFD_RELOC_M32R_GOTPC_HI_ULO, R_M32R_GOTPC_HI_ULO }, 1224 { BFD_RELOC_M32R_GOTPC_HI_SLO, R_M32R_GOTPC_HI_SLO }, 1225 { BFD_RELOC_M32R_GOTPC_LO, R_M32R_GOTPC_LO }, 1226 { BFD_RELOC_M32R_GOTOFF_HI_ULO, R_M32R_GOTOFF_HI_ULO }, 1227 { BFD_RELOC_M32R_GOTOFF_HI_SLO, R_M32R_GOTOFF_HI_SLO }, 1228 { BFD_RELOC_M32R_GOTOFF_LO, R_M32R_GOTOFF_LO }, 1229 }; 1230 #endif 1231 1232 static reloc_howto_type * 1233 bfd_elf32_bfd_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED, 1234 bfd_reloc_code_real_type code) 1235 { 1236 unsigned int i; 1237 1238 #ifdef USE_M32R_OLD_RELOC 1239 for (i = 0; 1240 i < sizeof (m32r_reloc_map_old) / sizeof (struct m32r_reloc_map); 1241 i++) 1242 if (m32r_reloc_map_old[i].bfd_reloc_val == code) 1243 return &m32r_elf_howto_table[m32r_reloc_map_old[i].elf_reloc_val]; 1244 1245 #else /* ! USE_M32R_OLD_RELOC */ 1246 1247 for (i = 0; 1248 i < sizeof (m32r_reloc_map) / sizeof (struct m32r_reloc_map); 1249 i++) 1250 if (m32r_reloc_map[i].bfd_reloc_val == code) 1251 return &m32r_elf_howto_table[m32r_reloc_map[i].elf_reloc_val]; 1252 #endif 1253 1254 return NULL; 1255 } 1256 1257 static reloc_howto_type * 1258 bfd_elf32_bfd_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED, 1259 const char *r_name) 1260 { 1261 unsigned int i; 1262 1263 for (i = 0; 1264 i < sizeof (m32r_elf_howto_table) / sizeof (m32r_elf_howto_table[0]); 1265 i++) 1266 if (m32r_elf_howto_table[i].name != NULL 1267 && strcasecmp (m32r_elf_howto_table[i].name, r_name) == 0) 1268 return &m32r_elf_howto_table[i]; 1269 1270 return NULL; 1271 } 1272 1273 /* Set the howto pointer for an M32R ELF reloc. */ 1274 1275 static void 1276 m32r_info_to_howto_rel (bfd *abfd ATTRIBUTE_UNUSED, 1277 arelent *cache_ptr, 1278 Elf_Internal_Rela *dst) 1279 { 1280 unsigned int r_type; 1281 1282 r_type = ELF32_R_TYPE (dst->r_info); 1283 if (r_type > (unsigned int) R_M32R_GNU_VTENTRY) 1284 { 1285 /* xgettext:c-format */ 1286 _bfd_error_handler (_("%B: invalid M32R reloc number: %d"), abfd, r_type); 1287 r_type = 0; 1288 } 1289 cache_ptr->howto = &m32r_elf_howto_table[r_type]; 1290 } 1291 1292 static void 1293 m32r_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED, 1294 arelent *cache_ptr, 1295 Elf_Internal_Rela *dst) 1296 { 1297 BFD_ASSERT ((ELF32_R_TYPE(dst->r_info) == (unsigned int) R_M32R_NONE) 1298 || ((ELF32_R_TYPE(dst->r_info) > (unsigned int) R_M32R_GNU_VTENTRY) 1299 && (ELF32_R_TYPE(dst->r_info) < (unsigned int) R_M32R_max))); 1300 cache_ptr->howto = &m32r_elf_howto_table[ELF32_R_TYPE(dst->r_info)]; 1301 } 1302 1303 1304 /* Given a BFD section, try to locate the corresponding ELF section 1305 index. */ 1306 1307 static bfd_boolean 1308 _bfd_m32r_elf_section_from_bfd_section (bfd *abfd ATTRIBUTE_UNUSED, 1309 asection *sec, 1310 int *retval) 1311 { 1312 if (strcmp (bfd_get_section_name (abfd, sec), ".scommon") == 0) 1313 { 1314 *retval = SHN_M32R_SCOMMON; 1315 return TRUE; 1316 } 1317 return FALSE; 1318 } 1319 1320 /* M32R ELF uses two common sections. One is the usual one, and the other 1321 is for small objects. All the small objects are kept together, and then 1322 referenced via one register, which yields faster assembler code. It is 1323 up to the compiler to emit an instruction to load the register with 1324 _SDA_BASE. This is what we use for the small common section. This 1325 approach is copied from elf32-mips.c. */ 1326 static asection m32r_elf_scom_section; 1327 static asymbol m32r_elf_scom_symbol; 1328 static asymbol *m32r_elf_scom_symbol_ptr; 1329 1330 /* Handle the special M32R section numbers that a symbol may use. */ 1331 1332 static void 1333 _bfd_m32r_elf_symbol_processing (bfd *abfd ATTRIBUTE_UNUSED, asymbol *asym) 1334 { 1335 elf_symbol_type *elfsym = (elf_symbol_type *) asym; 1336 1337 switch (elfsym->internal_elf_sym.st_shndx) 1338 { 1339 case SHN_M32R_SCOMMON: 1340 if (m32r_elf_scom_section.name == NULL) 1341 { 1342 /* Initialize the small common section. */ 1343 m32r_elf_scom_section.name = ".scommon"; 1344 m32r_elf_scom_section.flags = SEC_IS_COMMON; 1345 m32r_elf_scom_section.output_section = &m32r_elf_scom_section; 1346 m32r_elf_scom_section.symbol = &m32r_elf_scom_symbol; 1347 m32r_elf_scom_section.symbol_ptr_ptr = &m32r_elf_scom_symbol_ptr; 1348 m32r_elf_scom_symbol.name = ".scommon"; 1349 m32r_elf_scom_symbol.flags = BSF_SECTION_SYM; 1350 m32r_elf_scom_symbol.section = &m32r_elf_scom_section; 1351 m32r_elf_scom_symbol_ptr = &m32r_elf_scom_symbol; 1352 } 1353 asym->section = &m32r_elf_scom_section; 1354 asym->value = elfsym->internal_elf_sym.st_size; 1355 break; 1356 } 1357 } 1358 1359 /* Hook called by the linker routine which adds symbols from an object 1360 file. We must handle the special M32R section numbers here. 1361 We also keep watching for whether we need to create the sdata special 1362 linker sections. */ 1363 1364 static bfd_boolean 1365 m32r_elf_add_symbol_hook (bfd *abfd, 1366 struct bfd_link_info *info, 1367 Elf_Internal_Sym *sym, 1368 const char **namep, 1369 flagword *flagsp ATTRIBUTE_UNUSED, 1370 asection **secp, 1371 bfd_vma *valp) 1372 { 1373 if (! bfd_link_relocatable (info) 1374 && (*namep)[0] == '_' && (*namep)[1] == 'S' 1375 && strcmp (*namep, "_SDA_BASE_") == 0 1376 && is_elf_hash_table (info->hash)) 1377 { 1378 /* This is simpler than using _bfd_elf_create_linker_section 1379 (our needs are simpler than ppc's needs). Also 1380 _bfd_elf_create_linker_section currently has a bug where if a .sdata 1381 section already exists a new one is created that follows it which 1382 screws of _SDA_BASE_ address calcs because output_offset != 0. */ 1383 struct elf_link_hash_entry *h; 1384 struct bfd_link_hash_entry *bh; 1385 asection *s = bfd_get_section_by_name (abfd, ".sdata"); 1386 1387 /* The following code was cobbled from elf32-ppc.c and elflink.c. */ 1388 if (s == NULL) 1389 { 1390 flagword flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS 1391 | SEC_IN_MEMORY | SEC_LINKER_CREATED); 1392 1393 s = bfd_make_section_anyway_with_flags (abfd, ".sdata", 1394 flags); 1395 if (s == NULL) 1396 return FALSE; 1397 if (! bfd_set_section_alignment (abfd, s, 2)) 1398 return FALSE; 1399 } 1400 1401 bh = bfd_link_hash_lookup (info->hash, "_SDA_BASE_", 1402 FALSE, FALSE, FALSE); 1403 1404 if ((bh == NULL || bh->type == bfd_link_hash_undefined) 1405 && !(_bfd_generic_link_add_one_symbol (info, 1406 abfd, 1407 "_SDA_BASE_", 1408 BSF_GLOBAL, 1409 s, 1410 (bfd_vma) 32768, 1411 NULL, 1412 FALSE, 1413 get_elf_backend_data (abfd)->collect, 1414 &bh))) 1415 return FALSE; 1416 h = (struct elf_link_hash_entry *) bh; 1417 h->type = STT_OBJECT; 1418 } 1419 1420 switch (sym->st_shndx) 1421 { 1422 case SHN_M32R_SCOMMON: 1423 *secp = bfd_make_section_old_way (abfd, ".scommon"); 1424 (*secp)->flags |= SEC_IS_COMMON; 1425 *valp = sym->st_size; 1426 break; 1427 } 1428 1429 return TRUE; 1430 } 1431 1432 /* We have to figure out the SDA_BASE value, so that we can adjust the 1433 symbol value correctly. We look up the symbol _SDA_BASE_ in the output 1434 BFD. If we can't find it, we're stuck. We cache it in the ELF 1435 target data. We don't need to adjust the symbol value for an 1436 external symbol if we are producing relocatable output. */ 1437 1438 static bfd_reloc_status_type 1439 m32r_elf_final_sda_base (bfd *output_bfd, 1440 struct bfd_link_info *info, 1441 const char **error_message, 1442 bfd_vma *psb) 1443 { 1444 if (elf_gp (output_bfd) == 0) 1445 { 1446 struct bfd_link_hash_entry *h; 1447 1448 h = bfd_link_hash_lookup (info->hash, "_SDA_BASE_", FALSE, FALSE, TRUE); 1449 if (h != NULL && h->type == bfd_link_hash_defined) 1450 elf_gp (output_bfd) = (h->u.def.value 1451 + h->u.def.section->output_section->vma 1452 + h->u.def.section->output_offset); 1453 else 1454 { 1455 /* Only get the error once. */ 1456 *psb = elf_gp (output_bfd) = 4; 1457 *error_message = 1458 (const char *) _("SDA relocation when _SDA_BASE_ not defined"); 1459 return bfd_reloc_dangerous; 1460 } 1461 } 1462 *psb = elf_gp (output_bfd); 1463 return bfd_reloc_ok; 1464 } 1465 1466 /* Return size of a PLT entry. */ 1467 #define elf_m32r_sizeof_plt(info) PLT_ENTRY_SIZE 1468 1469 /* The m32r linker needs to keep track of the number of relocs that it 1470 decides to copy in check_relocs for each symbol. This is so that 1471 it can discard PC relative relocs if it doesn't need them when 1472 linking with -Bsymbolic. We store the information in a field 1473 extending the regular ELF linker hash table. */ 1474 1475 /* This structure keeps track of the number of PC relative relocs we 1476 have copied for a given symbol. */ 1477 1478 struct elf_m32r_pcrel_relocs_copied 1479 { 1480 /* Next section. */ 1481 struct elf_m32r_pcrel_relocs_copied *next; 1482 /* A section in dynobj. */ 1483 asection *section; 1484 /* Number of relocs copied in this section. */ 1485 bfd_size_type count; 1486 }; 1487 1488 /* m32r ELF linker hash entry. */ 1489 1490 struct elf_m32r_link_hash_entry 1491 { 1492 struct elf_link_hash_entry root; 1493 1494 /* Track dynamic relocs copied for this symbol. */ 1495 struct elf_dyn_relocs *dyn_relocs; 1496 }; 1497 1498 /* m32r ELF linker hash table. */ 1499 1500 struct elf_m32r_link_hash_table 1501 { 1502 struct elf_link_hash_table root; 1503 1504 /* Short-cuts to get to dynamic linker sections. */ 1505 asection *sdynbss; 1506 asection *srelbss; 1507 1508 /* Small local sym cache. */ 1509 struct sym_cache sym_cache; 1510 }; 1511 1512 /* Traverse an m32r ELF linker hash table. */ 1513 1514 #define m32r_elf_link_hash_traverse(table, func, info) \ 1515 (elf_link_hash_traverse \ 1516 (&(table)->root, \ 1517 (bfd_boolean (*) (struct elf_link_hash_entry *, void *)) (func), \ 1518 (info))) 1519 1520 /* Get the m32r ELF linker hash table from a link_info structure. */ 1521 1522 #define m32r_elf_hash_table(p) \ 1523 (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \ 1524 == M32R_ELF_DATA ? ((struct elf_m32r_link_hash_table *) ((p)->hash)) : NULL) 1525 1526 /* Create an entry in an m32r ELF linker hash table. */ 1527 1528 static struct bfd_hash_entry * 1529 m32r_elf_link_hash_newfunc (struct bfd_hash_entry *entry, 1530 struct bfd_hash_table *table, 1531 const char *string) 1532 { 1533 struct elf_m32r_link_hash_entry *ret = 1534 (struct elf_m32r_link_hash_entry *) entry; 1535 1536 /* Allocate the structure if it has not already been allocated by a 1537 subclass. */ 1538 if (ret == NULL) 1539 ret = bfd_hash_allocate (table, 1540 sizeof (struct elf_m32r_link_hash_entry)); 1541 if (ret == NULL) 1542 return NULL; 1543 1544 /* Call the allocation method of the superclass. */ 1545 ret = ((struct elf_m32r_link_hash_entry *) 1546 _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret, 1547 table, string)); 1548 if (ret != NULL) 1549 { 1550 struct elf_m32r_link_hash_entry *eh; 1551 1552 eh = (struct elf_m32r_link_hash_entry *) ret; 1553 eh->dyn_relocs = NULL; 1554 } 1555 1556 return (struct bfd_hash_entry *) ret; 1557 } 1558 1559 /* Create an m32r ELF linker hash table. */ 1560 1561 static struct bfd_link_hash_table * 1562 m32r_elf_link_hash_table_create (bfd *abfd) 1563 { 1564 struct elf_m32r_link_hash_table *ret; 1565 bfd_size_type amt = sizeof (struct elf_m32r_link_hash_table); 1566 1567 ret = bfd_zmalloc (amt); 1568 if (ret == NULL) 1569 return NULL; 1570 1571 if (!_bfd_elf_link_hash_table_init (&ret->root, abfd, 1572 m32r_elf_link_hash_newfunc, 1573 sizeof (struct elf_m32r_link_hash_entry), 1574 M32R_ELF_DATA)) 1575 { 1576 free (ret); 1577 return NULL; 1578 } 1579 1580 return &ret->root.root; 1581 } 1582 1583 /* Create dynamic sections when linking against a dynamic object. */ 1584 1585 static bfd_boolean 1586 m32r_elf_create_dynamic_sections (bfd *abfd, struct bfd_link_info *info) 1587 { 1588 struct elf_m32r_link_hash_table *htab; 1589 flagword flags, pltflags; 1590 asection *s; 1591 const struct elf_backend_data *bed = get_elf_backend_data (abfd); 1592 int ptralign = 2; /* 32bit */ 1593 1594 htab = m32r_elf_hash_table (info); 1595 if (htab == NULL) 1596 return FALSE; 1597 1598 /* We need to create .plt, .rel[a].plt, .got, .got.plt, .dynbss, and 1599 .rel[a].bss sections. */ 1600 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY 1601 | SEC_LINKER_CREATED); 1602 1603 pltflags = flags; 1604 pltflags |= SEC_CODE; 1605 if (bed->plt_not_loaded) 1606 pltflags &= ~ (SEC_LOAD | SEC_HAS_CONTENTS); 1607 if (bed->plt_readonly) 1608 pltflags |= SEC_READONLY; 1609 1610 s = bfd_make_section_anyway_with_flags (abfd, ".plt", pltflags); 1611 htab->root.splt = s; 1612 if (s == NULL 1613 || ! bfd_set_section_alignment (abfd, s, bed->plt_alignment)) 1614 return FALSE; 1615 1616 if (bed->want_plt_sym) 1617 { 1618 /* Define the symbol _PROCEDURE_LINKAGE_TABLE_ at the start of the 1619 .plt section. */ 1620 struct bfd_link_hash_entry *bh = NULL; 1621 struct elf_link_hash_entry *h; 1622 1623 if (! (_bfd_generic_link_add_one_symbol 1624 (info, abfd, "_PROCEDURE_LINKAGE_TABLE_", BSF_GLOBAL, s, 1625 (bfd_vma) 0, NULL, FALSE, 1626 get_elf_backend_data (abfd)->collect, &bh))) 1627 return FALSE; 1628 h = (struct elf_link_hash_entry *) bh; 1629 h->def_regular = 1; 1630 h->type = STT_OBJECT; 1631 htab->root.hplt = h; 1632 1633 if (bfd_link_pic (info) 1634 && ! bfd_elf_link_record_dynamic_symbol (info, h)) 1635 return FALSE; 1636 } 1637 1638 s = bfd_make_section_anyway_with_flags (abfd, 1639 bed->default_use_rela_p 1640 ? ".rela.plt" : ".rel.plt", 1641 flags | SEC_READONLY); 1642 htab->root.srelplt = s; 1643 if (s == NULL 1644 || ! bfd_set_section_alignment (abfd, s, ptralign)) 1645 return FALSE; 1646 1647 if (htab->root.sgot == NULL 1648 && !_bfd_elf_create_got_section (abfd, info)) 1649 return FALSE; 1650 1651 if (bed->want_dynbss) 1652 { 1653 /* The .dynbss section is a place to put symbols which are defined 1654 by dynamic objects, are referenced by regular objects, and are 1655 not functions. We must allocate space for them in the process 1656 image and use a R_*_COPY reloc to tell the dynamic linker to 1657 initialize them at run time. The linker script puts the .dynbss 1658 section into the .bss section of the final image. */ 1659 s = bfd_make_section_anyway_with_flags (abfd, ".dynbss", 1660 SEC_ALLOC | SEC_LINKER_CREATED); 1661 htab->sdynbss = s; 1662 if (s == NULL) 1663 return FALSE; 1664 /* The .rel[a].bss section holds copy relocs. This section is not 1665 normally needed. We need to create it here, though, so that the 1666 linker will map it to an output section. We can't just create it 1667 only if we need it, because we will not know whether we need it 1668 until we have seen all the input files, and the first time the 1669 main linker code calls BFD after examining all the input files 1670 (size_dynamic_sections) the input sections have already been 1671 mapped to the output sections. If the section turns out not to 1672 be needed, we can discard it later. We will never need this 1673 section when generating a shared object, since they do not use 1674 copy relocs. */ 1675 if (! bfd_link_pic (info)) 1676 { 1677 s = bfd_make_section_anyway_with_flags (abfd, 1678 (bed->default_use_rela_p 1679 ? ".rela.bss" : ".rel.bss"), 1680 flags | SEC_READONLY); 1681 htab->srelbss = s; 1682 if (s == NULL 1683 || ! bfd_set_section_alignment (abfd, s, ptralign)) 1684 return FALSE; 1685 } 1686 } 1687 1688 return TRUE; 1689 } 1690 1691 /* Copy the extra info we tack onto an elf_link_hash_entry. */ 1692 1693 static void 1694 m32r_elf_copy_indirect_symbol (struct bfd_link_info *info, 1695 struct elf_link_hash_entry *dir, 1696 struct elf_link_hash_entry *ind) 1697 { 1698 struct elf_m32r_link_hash_entry * edir; 1699 struct elf_m32r_link_hash_entry * eind; 1700 1701 edir = (struct elf_m32r_link_hash_entry *) dir; 1702 eind = (struct elf_m32r_link_hash_entry *) ind; 1703 1704 if (eind->dyn_relocs != NULL) 1705 { 1706 if (edir->dyn_relocs != NULL) 1707 { 1708 struct elf_dyn_relocs **pp; 1709 struct elf_dyn_relocs *p; 1710 1711 /* Add reloc counts against the indirect sym to the direct sym 1712 list. Merge any entries against the same section. */ 1713 for (pp = &eind->dyn_relocs; (p = *pp) != NULL;) 1714 { 1715 struct elf_dyn_relocs *q; 1716 1717 for (q = edir->dyn_relocs; q != NULL; q = q->next) 1718 if (q->sec == p->sec) 1719 { 1720 q->pc_count += p->pc_count; 1721 q->count += p->count; 1722 *pp = p->next; 1723 break; 1724 } 1725 if (q == NULL) 1726 pp = &p->next; 1727 } 1728 *pp = edir->dyn_relocs; 1729 } 1730 1731 edir->dyn_relocs = eind->dyn_relocs; 1732 eind->dyn_relocs = NULL; 1733 } 1734 1735 _bfd_elf_link_hash_copy_indirect (info, dir, ind); 1736 } 1737 1738 1739 /* Find dynamic relocs for H that apply to read-only sections. */ 1740 1741 static asection * 1742 readonly_dynrelocs (struct elf_link_hash_entry *h) 1743 { 1744 struct elf_dyn_relocs *p; 1745 struct elf_m32r_link_hash_entry *eh = (struct elf_m32r_link_hash_entry *) h; 1746 1747 for (p = eh->dyn_relocs; p != NULL; p = p->next) 1748 { 1749 asection *s = p->sec->output_section; 1750 1751 if (s != NULL && (s->flags & SEC_READONLY) != 0) 1752 return p->sec; 1753 } 1754 return NULL; 1755 } 1756 1757 /* Adjust a symbol defined by a dynamic object and referenced by a 1758 regular object. The current definition is in some section of the 1759 dynamic object, but we're not including those sections. We have to 1760 change the definition to something the rest of the link can 1761 understand. */ 1762 1763 static bfd_boolean 1764 m32r_elf_adjust_dynamic_symbol (struct bfd_link_info *info, 1765 struct elf_link_hash_entry *h) 1766 { 1767 struct elf_m32r_link_hash_table *htab; 1768 bfd *dynobj; 1769 asection *s; 1770 1771 #ifdef DEBUG_PIC 1772 printf ("m32r_elf_adjust_dynamic_symbol()\n"); 1773 #endif 1774 1775 dynobj = elf_hash_table (info)->dynobj; 1776 1777 /* Make sure we know what is going on here. */ 1778 BFD_ASSERT (dynobj != NULL 1779 && (h->needs_plt 1780 || h->is_weakalias 1781 || (h->def_dynamic 1782 && h->ref_regular 1783 && !h->def_regular))); 1784 1785 /* If this is a function, put it in the procedure linkage table. We 1786 will fill in the contents of the procedure linkage table later, 1787 when we know the address of the .got section. */ 1788 if (h->type == STT_FUNC 1789 || h->needs_plt) 1790 { 1791 if (! bfd_link_pic (info) 1792 && !h->def_dynamic 1793 && !h->ref_dynamic 1794 && h->root.type != bfd_link_hash_undefweak 1795 && h->root.type != bfd_link_hash_undefined) 1796 { 1797 /* This case can occur if we saw a PLT reloc in an input 1798 file, but the symbol was never referred to by a dynamic 1799 object. In such a case, we don't actually need to build 1800 a procedure linkage table, and we can just do a PCREL 1801 reloc instead. */ 1802 h->plt.offset = (bfd_vma) -1; 1803 h->needs_plt = 0; 1804 } 1805 1806 return TRUE; 1807 } 1808 else 1809 h->plt.offset = (bfd_vma) -1; 1810 1811 /* If this is a weak symbol, and there is a real definition, the 1812 processor independent code will have arranged for us to see the 1813 real definition first, and we can just use the same value. */ 1814 if (h->is_weakalias) 1815 { 1816 struct elf_link_hash_entry *def = weakdef (h); 1817 BFD_ASSERT (def->root.type == bfd_link_hash_defined); 1818 h->root.u.def.section = def->root.u.def.section; 1819 h->root.u.def.value = def->root.u.def.value; 1820 return TRUE; 1821 } 1822 1823 /* This is a reference to a symbol defined by a dynamic object which 1824 is not a function. */ 1825 1826 /* If we are creating a shared library, we must presume that the 1827 only references to the symbol are via the global offset table. 1828 For such cases we need not do anything here; the relocations will 1829 be handled correctly by relocate_section. */ 1830 if (bfd_link_pic (info)) 1831 return TRUE; 1832 1833 /* If there are no references to this symbol that do not use the 1834 GOT, we don't need to generate a copy reloc. */ 1835 if (!h->non_got_ref) 1836 return TRUE; 1837 1838 /* If -z nocopyreloc was given, we won't generate them either. */ 1839 if (0 && info->nocopyreloc) 1840 { 1841 h->non_got_ref = 0; 1842 return TRUE; 1843 } 1844 1845 /* If we don't find any dynamic relocs in read-only sections, then 1846 we'll be keeping the dynamic relocs and avoiding the copy reloc. */ 1847 if (0 && !readonly_dynrelocs (h)) 1848 { 1849 h->non_got_ref = 0; 1850 return TRUE; 1851 } 1852 1853 /* We must allocate the symbol in our .dynbss section, which will 1854 become part of the .bss section of the executable. There will be 1855 an entry for this symbol in the .dynsym section. The dynamic 1856 object will contain position independent code, so all references 1857 from the dynamic object to this symbol will go through the global 1858 offset table. The dynamic linker will use the .dynsym entry to 1859 determine the address it must put in the global offset table, so 1860 both the dynamic object and the regular object will refer to the 1861 same memory location for the variable. */ 1862 1863 htab = m32r_elf_hash_table (info); 1864 if (htab == NULL) 1865 return FALSE; 1866 1867 s = htab->sdynbss; 1868 BFD_ASSERT (s != NULL); 1869 1870 /* We must generate a R_M32R_COPY reloc to tell the dynamic linker 1871 to copy the initial value out of the dynamic object and into the 1872 runtime process image. We need to remember the offset into the 1873 .rela.bss section we are going to use. */ 1874 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0) 1875 { 1876 asection *srel; 1877 1878 srel = htab->srelbss; 1879 BFD_ASSERT (srel != NULL); 1880 srel->size += sizeof (Elf32_External_Rela); 1881 h->needs_copy = 1; 1882 } 1883 1884 return _bfd_elf_adjust_dynamic_copy (info, h, s); 1885 } 1886 1887 /* Allocate space in .plt, .got and associated reloc sections for 1888 dynamic relocs. */ 1889 1890 static bfd_boolean 1891 allocate_dynrelocs (struct elf_link_hash_entry *h, void * inf) 1892 { 1893 struct bfd_link_info *info; 1894 struct elf_m32r_link_hash_table *htab; 1895 struct elf_m32r_link_hash_entry *eh; 1896 struct elf_dyn_relocs *p; 1897 1898 if (h->root.type == bfd_link_hash_indirect) 1899 return TRUE; 1900 1901 info = (struct bfd_link_info *) inf; 1902 htab = m32r_elf_hash_table (info); 1903 if (htab == NULL) 1904 return FALSE; 1905 1906 eh = (struct elf_m32r_link_hash_entry *) h; 1907 1908 if (htab->root.dynamic_sections_created 1909 && h->plt.refcount > 0) 1910 { 1911 /* Make sure this symbol is output as a dynamic symbol. 1912 Undefined weak syms won't yet be marked as dynamic. */ 1913 if (h->dynindx == -1 1914 && !h->forced_local) 1915 { 1916 if (! bfd_elf_link_record_dynamic_symbol (info, h)) 1917 return FALSE; 1918 } 1919 1920 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, bfd_link_pic (info), h)) 1921 { 1922 asection *s = htab->root.splt; 1923 1924 /* If this is the first .plt entry, make room for the special 1925 first entry. */ 1926 if (s->size == 0) 1927 s->size += PLT_ENTRY_SIZE; 1928 1929 h->plt.offset = s->size; 1930 1931 /* If this symbol is not defined in a regular file, and we are 1932 not generating a shared library, then set the symbol to this 1933 location in the .plt. This is required to make function 1934 pointers compare as equal between the normal executable and 1935 the shared library. */ 1936 if (! bfd_link_pic (info) 1937 && !h->def_regular) 1938 { 1939 h->root.u.def.section = s; 1940 h->root.u.def.value = h->plt.offset; 1941 } 1942 1943 /* Make room for this entry. */ 1944 s->size += PLT_ENTRY_SIZE; 1945 1946 /* We also need to make an entry in the .got.plt section, which 1947 will be placed in the .got section by the linker script. */ 1948 htab->root.sgotplt->size += 4; 1949 1950 /* We also need to make an entry in the .rel.plt section. */ 1951 htab->root.srelplt->size += sizeof (Elf32_External_Rela); 1952 } 1953 else 1954 { 1955 h->plt.offset = (bfd_vma) -1; 1956 h->needs_plt = 0; 1957 } 1958 } 1959 else 1960 { 1961 h->plt.offset = (bfd_vma) -1; 1962 h->needs_plt = 0; 1963 } 1964 1965 if (h->got.refcount > 0) 1966 { 1967 asection *s; 1968 bfd_boolean dyn; 1969 1970 /* Make sure this symbol is output as a dynamic symbol. 1971 Undefined weak syms won't yet be marked as dynamic. */ 1972 if (h->dynindx == -1 1973 && !h->forced_local) 1974 { 1975 if (! bfd_elf_link_record_dynamic_symbol (info, h)) 1976 return FALSE; 1977 } 1978 1979 s = htab->root.sgot; 1980 1981 h->got.offset = s->size; 1982 s->size += 4; 1983 dyn = htab->root.dynamic_sections_created; 1984 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, bfd_link_pic (info), h)) 1985 htab->root.srelgot->size += sizeof (Elf32_External_Rela); 1986 } 1987 else 1988 h->got.offset = (bfd_vma) -1; 1989 1990 if (eh->dyn_relocs == NULL) 1991 return TRUE; 1992 1993 /* In the shared -Bsymbolic case, discard space allocated for 1994 dynamic pc-relative relocs against symbols which turn out to be 1995 defined in regular objects. For the normal shared case, discard 1996 space for pc-relative relocs that have become local due to symbol 1997 visibility changes. */ 1998 1999 if (bfd_link_pic (info)) 2000 { 2001 if (h->def_regular 2002 && (h->forced_local 2003 || info->symbolic)) 2004 { 2005 struct elf_dyn_relocs **pp; 2006 2007 for (pp = &eh->dyn_relocs; (p = *pp) != NULL;) 2008 { 2009 p->count -= p->pc_count; 2010 p->pc_count = 0; 2011 if (p->count == 0) 2012 *pp = p->next; 2013 else 2014 pp = &p->next; 2015 } 2016 } 2017 2018 /* Also discard relocs on undefined weak syms with non-default 2019 visibility. */ 2020 if (eh->dyn_relocs != NULL 2021 && h->root.type == bfd_link_hash_undefweak) 2022 { 2023 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT) 2024 eh->dyn_relocs = NULL; 2025 2026 /* Make sure undefined weak symbols are output as a dynamic 2027 symbol in PIEs. */ 2028 else if (h->dynindx == -1 2029 && !h->forced_local) 2030 { 2031 if (! bfd_elf_link_record_dynamic_symbol (info, h)) 2032 return FALSE; 2033 } 2034 } 2035 } 2036 else 2037 { 2038 /* For the non-shared case, discard space for relocs against 2039 symbols which turn out to need copy relocs or are not 2040 dynamic. */ 2041 2042 if (!h->non_got_ref 2043 && ((h->def_dynamic 2044 && !h->def_regular) 2045 || (htab->root.dynamic_sections_created 2046 && (h->root.type == bfd_link_hash_undefweak 2047 || h->root.type == bfd_link_hash_undefined)))) 2048 { 2049 /* Make sure this symbol is output as a dynamic symbol. 2050 Undefined weak syms won't yet be marked as dynamic. */ 2051 if (h->dynindx == -1 2052 && !h->forced_local) 2053 { 2054 if (! bfd_elf_link_record_dynamic_symbol (info, h)) 2055 return FALSE; 2056 } 2057 2058 /* If that succeeded, we know we'll be keeping all the 2059 relocs. */ 2060 if (h->dynindx != -1) 2061 goto keep; 2062 } 2063 2064 eh->dyn_relocs = NULL; 2065 2066 keep: ; 2067 } 2068 2069 /* Finally, allocate space. */ 2070 for (p = eh->dyn_relocs; p != NULL; p = p->next) 2071 { 2072 asection *sreloc = elf_section_data (p->sec)->sreloc; 2073 sreloc->size += p->count * sizeof (Elf32_External_Rela); 2074 } 2075 2076 return TRUE; 2077 } 2078 2079 /* Set DF_TEXTREL if we find any dynamic relocs that apply to 2080 read-only sections. */ 2081 2082 static bfd_boolean 2083 maybe_set_textrel (struct elf_link_hash_entry *h, void *info_p) 2084 { 2085 asection *sec; 2086 2087 if (h->root.type == bfd_link_hash_indirect) 2088 return TRUE; 2089 2090 sec = readonly_dynrelocs (h); 2091 if (sec != NULL) 2092 { 2093 struct bfd_link_info *info = (struct bfd_link_info *) info_p; 2094 2095 info->flags |= DF_TEXTREL; 2096 info->callbacks->minfo 2097 (_("%B: dynamic relocation against `%T' in read-only section `%A'\n"), 2098 sec->owner, h->root.root.string, sec); 2099 2100 /* Not an error, just cut short the traversal. */ 2101 return FALSE; 2102 } 2103 return TRUE; 2104 } 2105 2106 /* Set the sizes of the dynamic sections. */ 2107 2108 static bfd_boolean 2109 m32r_elf_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED, 2110 struct bfd_link_info *info) 2111 { 2112 struct elf_m32r_link_hash_table *htab; 2113 bfd *dynobj; 2114 asection *s; 2115 bfd_boolean relocs; 2116 bfd *ibfd; 2117 2118 #ifdef DEBUG_PIC 2119 printf ("m32r_elf_size_dynamic_sections()\n"); 2120 #endif 2121 2122 htab = m32r_elf_hash_table (info); 2123 if (htab == NULL) 2124 return FALSE; 2125 2126 dynobj = htab->root.dynobj; 2127 BFD_ASSERT (dynobj != NULL); 2128 2129 if (htab->root.dynamic_sections_created) 2130 { 2131 /* Set the contents of the .interp section to the interpreter. */ 2132 if (bfd_link_executable (info) && !info->nointerp) 2133 { 2134 s = bfd_get_linker_section (dynobj, ".interp"); 2135 BFD_ASSERT (s != NULL); 2136 s->size = sizeof ELF_DYNAMIC_INTERPRETER; 2137 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER; 2138 } 2139 } 2140 2141 /* Set up .got offsets for local syms, and space for local dynamic 2142 relocs. */ 2143 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) 2144 { 2145 bfd_signed_vma *local_got; 2146 bfd_signed_vma *end_local_got; 2147 bfd_size_type locsymcount; 2148 Elf_Internal_Shdr *symtab_hdr; 2149 asection *srel; 2150 2151 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour) 2152 continue; 2153 2154 for (s = ibfd->sections; s != NULL; s = s->next) 2155 { 2156 struct elf_dyn_relocs *p; 2157 2158 for (p = ((struct elf_dyn_relocs *) 2159 elf_section_data (s)->local_dynrel); 2160 p != NULL; 2161 p = p->next) 2162 { 2163 if (! bfd_is_abs_section (p->sec) 2164 && bfd_is_abs_section (p->sec->output_section)) 2165 { 2166 /* Input section has been discarded, either because 2167 it is a copy of a linkonce section or due to 2168 linker script /DISCARD/, so we'll be discarding 2169 the relocs too. */ 2170 } 2171 else if (p->count != 0) 2172 { 2173 srel = elf_section_data (p->sec)->sreloc; 2174 srel->size += p->count * sizeof (Elf32_External_Rela); 2175 if ((p->sec->output_section->flags & SEC_READONLY) != 0) 2176 info->flags |= DF_TEXTREL; 2177 } 2178 } 2179 } 2180 2181 local_got = elf_local_got_refcounts (ibfd); 2182 if (!local_got) 2183 continue; 2184 2185 symtab_hdr = &elf_tdata (ibfd)->symtab_hdr; 2186 locsymcount = symtab_hdr->sh_info; 2187 end_local_got = local_got + locsymcount; 2188 s = htab->root.sgot; 2189 srel = htab->root.srelgot; 2190 for (; local_got < end_local_got; ++local_got) 2191 { 2192 if (*local_got > 0) 2193 { 2194 *local_got = s->size; 2195 s->size += 4; 2196 if (bfd_link_pic (info)) 2197 srel->size += sizeof (Elf32_External_Rela); 2198 } 2199 else 2200 *local_got = (bfd_vma) -1; 2201 } 2202 } 2203 2204 /* Allocate global sym .plt and .got entries, and space for global 2205 sym dynamic relocs. */ 2206 elf_link_hash_traverse (&htab->root, allocate_dynrelocs, info); 2207 2208 /* We now have determined the sizes of the various dynamic sections. 2209 Allocate memory for them. */ 2210 relocs = FALSE; 2211 for (s = dynobj->sections; s != NULL; s = s->next) 2212 { 2213 if ((s->flags & SEC_LINKER_CREATED) == 0) 2214 continue; 2215 2216 if (s == htab->root.splt 2217 || s == htab->root.sgot 2218 || s == htab->root.sgotplt 2219 || s == htab->sdynbss) 2220 { 2221 /* Strip this section if we don't need it; see the 2222 comment below. */ 2223 } 2224 else if (CONST_STRNEQ (bfd_get_section_name (dynobj, s), ".rela")) 2225 { 2226 if (s->size != 0 && s != htab->root.srelplt) 2227 relocs = TRUE; 2228 2229 /* We use the reloc_count field as a counter if we need 2230 to copy relocs into the output file. */ 2231 s->reloc_count = 0; 2232 } 2233 else 2234 /* It's not one of our sections, so don't allocate space. */ 2235 continue; 2236 2237 if (s->size == 0) 2238 { 2239 /* If we don't need this section, strip it from the 2240 output file. This is mostly to handle .rela.bss and 2241 .rela.plt. We must create both sections in 2242 create_dynamic_sections, because they must be created 2243 before the linker maps input sections to output 2244 sections. The linker does that before 2245 adjust_dynamic_symbol is called, and it is that 2246 function which decides whether anything needs to go 2247 into these sections. */ 2248 s->flags |= SEC_EXCLUDE; 2249 continue; 2250 } 2251 2252 if ((s->flags & SEC_HAS_CONTENTS) == 0) 2253 continue; 2254 2255 /* Allocate memory for the section contents. We use bfd_zalloc 2256 here in case unused entries are not reclaimed before the 2257 section's contents are written out. This should not happen, 2258 but this way if it does, we get a R_M32R_NONE reloc instead 2259 of garbage. */ 2260 s->contents = bfd_zalloc (dynobj, s->size); 2261 if (s->contents == NULL) 2262 return FALSE; 2263 } 2264 2265 if (htab->root.dynamic_sections_created) 2266 { 2267 /* Add some entries to the .dynamic section. We fill in the 2268 values later, in m32r_elf_finish_dynamic_sections, but we 2269 must add the entries now so that we get the correct size for 2270 the .dynamic section. The DT_DEBUG entry is filled in by the 2271 dynamic linker and used by the debugger. */ 2272 #define add_dynamic_entry(TAG, VAL) \ 2273 _bfd_elf_add_dynamic_entry (info, TAG, VAL) 2274 2275 if (bfd_link_executable (info)) 2276 { 2277 if (! add_dynamic_entry (DT_DEBUG, 0)) 2278 return FALSE; 2279 } 2280 2281 if (htab->root.splt->size != 0) 2282 { 2283 if (! add_dynamic_entry (DT_PLTGOT, 0) 2284 || ! add_dynamic_entry (DT_PLTRELSZ, 0) 2285 || ! add_dynamic_entry (DT_PLTREL, DT_RELA) 2286 || ! add_dynamic_entry (DT_JMPREL, 0)) 2287 return FALSE; 2288 } 2289 2290 if (relocs) 2291 { 2292 if (! add_dynamic_entry (DT_RELA, 0) 2293 || ! add_dynamic_entry (DT_RELASZ, 0) 2294 || ! add_dynamic_entry (DT_RELAENT, 2295 sizeof (Elf32_External_Rela))) 2296 return FALSE; 2297 2298 /* If any dynamic relocs apply to a read-only section, 2299 then we need a DT_TEXTREL entry. */ 2300 if ((info->flags & DF_TEXTREL) == 0) 2301 elf_link_hash_traverse (&htab->root, maybe_set_textrel, info); 2302 2303 if ((info->flags & DF_TEXTREL) != 0) 2304 { 2305 if (! add_dynamic_entry (DT_TEXTREL, 0)) 2306 return FALSE; 2307 } 2308 } 2309 } 2310 #undef add_dynamic_entry 2311 2312 return TRUE; 2313 } 2314 2315 /* Relocate an M32R/D ELF section. 2316 There is some attempt to make this function usable for many architectures, 2317 both for RELA and REL type relocs, if only to serve as a learning tool. 2318 2319 The RELOCATE_SECTION function is called by the new ELF backend linker 2320 to handle the relocations for a section. 2321 2322 The relocs are always passed as Rela structures; if the section 2323 actually uses Rel structures, the r_addend field will always be 2324 zero. 2325 2326 This function is responsible for adjust the section contents as 2327 necessary, and (if using Rela relocs and generating a 2328 relocatable output file) adjusting the reloc addend as 2329 necessary. 2330 2331 This function does not have to worry about setting the reloc 2332 address or the reloc symbol index. 2333 2334 LOCAL_SYMS is a pointer to the swapped in local symbols. 2335 2336 LOCAL_SECTIONS is an array giving the section in the input file 2337 corresponding to the st_shndx field of each local symbol. 2338 2339 The global hash table entry for the global symbols can be found 2340 via elf_sym_hashes (input_bfd). 2341 2342 When generating relocatable output, this function must handle 2343 STB_LOCAL/STT_SECTION symbols specially. The output symbol is 2344 going to be the section symbol corresponding to the output 2345 section, which means that the addend must be adjusted 2346 accordingly. */ 2347 2348 static bfd_boolean 2349 m32r_elf_relocate_section (bfd *output_bfd ATTRIBUTE_UNUSED, 2350 struct bfd_link_info *info, 2351 bfd *input_bfd, 2352 asection *input_section, 2353 bfd_byte *contents, 2354 Elf_Internal_Rela *relocs, 2355 Elf_Internal_Sym *local_syms, 2356 asection **local_sections) 2357 { 2358 Elf_Internal_Shdr *symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; 2359 struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (input_bfd); 2360 Elf_Internal_Rela *rel, *relend; 2361 /* Assume success. */ 2362 bfd_boolean ret = TRUE; 2363 struct elf_m32r_link_hash_table *htab = m32r_elf_hash_table (info); 2364 bfd_vma *local_got_offsets; 2365 asection *sgot, *splt, *sreloc; 2366 bfd_vma high_address = bfd_get_section_limit (input_bfd, input_section); 2367 2368 if (htab == NULL) 2369 return FALSE; 2370 2371 local_got_offsets = elf_local_got_offsets (input_bfd); 2372 2373 sgot = htab->root.sgot; 2374 splt = htab->root.splt; 2375 sreloc = NULL; 2376 2377 rel = relocs; 2378 relend = relocs + input_section->reloc_count; 2379 for (; rel < relend; rel++) 2380 { 2381 int r_type; 2382 reloc_howto_type *howto; 2383 unsigned long r_symndx; 2384 struct elf_link_hash_entry *h; 2385 /* We can't modify r_addend here as elf_link_input_bfd has an assert to 2386 ensure it's zero (we use REL relocs, not RELA). Therefore this 2387 should be assigning zero to `addend', but for clarity we use 2388 `r_addend'. */ 2389 bfd_vma addend = rel->r_addend; 2390 bfd_vma offset = rel->r_offset; 2391 bfd_vma relocation; 2392 Elf_Internal_Sym *sym; 2393 asection *sec; 2394 const char *sym_name; 2395 bfd_reloc_status_type r; 2396 const char *errmsg = NULL; 2397 bfd_boolean use_rel = FALSE; 2398 2399 h = NULL; 2400 r_type = ELF32_R_TYPE (rel->r_info); 2401 if (r_type < 0 || r_type >= (int) R_M32R_max) 2402 { 2403 /* xgettext:c-format */ 2404 _bfd_error_handler (_("%B: unknown relocation type %d"), 2405 input_bfd, (int) r_type); 2406 bfd_set_error (bfd_error_bad_value); 2407 ret = FALSE; 2408 continue; 2409 } 2410 2411 if ( r_type == R_M32R_GNU_VTENTRY 2412 || r_type == R_M32R_GNU_VTINHERIT 2413 || r_type == R_M32R_NONE 2414 || r_type == R_M32R_RELA_GNU_VTENTRY 2415 || r_type == R_M32R_RELA_GNU_VTINHERIT) 2416 continue; 2417 2418 if (r_type <= R_M32R_GNU_VTENTRY) 2419 use_rel = TRUE; 2420 2421 howto = m32r_elf_howto_table + r_type; 2422 r_symndx = ELF32_R_SYM (rel->r_info); 2423 2424 sym = NULL; 2425 sec = NULL; 2426 h = NULL; 2427 2428 if (r_symndx < symtab_hdr->sh_info) 2429 { 2430 /* Local symbol. */ 2431 sym = local_syms + r_symndx; 2432 sec = local_sections[r_symndx]; 2433 sym_name = "<local symbol>"; 2434 2435 if (!use_rel) 2436 { 2437 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel); 2438 addend = rel->r_addend; 2439 } 2440 else 2441 { 2442 relocation = (sec->output_section->vma 2443 + sec->output_offset 2444 + sym->st_value); 2445 } 2446 } 2447 else 2448 { 2449 /* External symbol. */ 2450 relocation = 0; 2451 2452 h = sym_hashes[r_symndx - symtab_hdr->sh_info]; 2453 2454 if (info->wrap_hash != NULL 2455 && (input_section->flags & SEC_DEBUGGING) != 0) 2456 h = ((struct elf_link_hash_entry *) 2457 unwrap_hash_lookup (info, input_bfd, &h->root)); 2458 2459 while (h->root.type == bfd_link_hash_indirect 2460 || h->root.type == bfd_link_hash_warning) 2461 h = (struct elf_link_hash_entry *) h->root.u.i.link; 2462 sym_name = h->root.root.string; 2463 2464 if (h->root.type == bfd_link_hash_defined 2465 || h->root.type == bfd_link_hash_defweak) 2466 { 2467 bfd_boolean dyn; 2468 sec = h->root.u.def.section; 2469 2470 dyn = htab->root.dynamic_sections_created; 2471 sec = h->root.u.def.section; 2472 if (r_type == R_M32R_GOTPC24 2473 || (r_type == R_M32R_GOTPC_HI_ULO 2474 || r_type == R_M32R_GOTPC_HI_SLO 2475 || r_type == R_M32R_GOTPC_LO) 2476 || (r_type == R_M32R_26_PLTREL 2477 && h->plt.offset != (bfd_vma) -1) 2478 || ((r_type == R_M32R_GOT24 2479 || r_type == R_M32R_GOT16_HI_ULO 2480 || r_type == R_M32R_GOT16_HI_SLO 2481 || r_type == R_M32R_GOT16_LO) 2482 && WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 2483 bfd_link_pic (info), 2484 h) 2485 && (! bfd_link_pic (info) 2486 || (! info->symbolic && h->dynindx != -1) 2487 || !h->def_regular)) 2488 || (bfd_link_pic (info) 2489 && ((! info->symbolic && h->dynindx != -1) 2490 || !h->def_regular) 2491 && (((r_type == R_M32R_16_RELA 2492 || r_type == R_M32R_32_RELA 2493 || r_type == R_M32R_24_RELA 2494 || r_type == R_M32R_HI16_ULO_RELA 2495 || r_type == R_M32R_HI16_SLO_RELA 2496 || r_type == R_M32R_LO16_RELA) 2497 && !h->forced_local) 2498 || r_type == R_M32R_REL32 2499 || r_type == R_M32R_10_PCREL_RELA 2500 || r_type == R_M32R_18_PCREL_RELA 2501 || r_type == R_M32R_26_PCREL_RELA) 2502 && ((input_section->flags & SEC_ALLOC) != 0 2503 /* DWARF will emit R_M32R_16(24,32) relocations 2504 in its sections against symbols defined 2505 externally in shared libraries. We can't do 2506 anything with them here. */ 2507 || ((input_section->flags & SEC_DEBUGGING) != 0 2508 && h->def_dynamic)))) 2509 { 2510 /* In these cases, we don't need the relocation 2511 value. We check specially because in some 2512 obscure cases sec->output_section will be NULL. */ 2513 } 2514 else if (sec->output_section != NULL) 2515 relocation = (h->root.u.def.value 2516 + sec->output_section->vma 2517 + sec->output_offset); 2518 else if (!bfd_link_relocatable (info) 2519 && (_bfd_elf_section_offset (output_bfd, info, 2520 input_section, 2521 rel->r_offset) 2522 != (bfd_vma) -1)) 2523 { 2524 _bfd_error_handler 2525 /* xgettext:c-format */ 2526 (_("%B(%A+%#Lx): unresolvable %s relocation " 2527 "against symbol `%s'"), 2528 input_bfd, 2529 input_section, 2530 rel->r_offset, 2531 howto->name, 2532 h->root.root.string); 2533 } 2534 } 2535 else if (h->root.type == bfd_link_hash_undefweak) 2536 ; 2537 else if (info->unresolved_syms_in_objects == RM_IGNORE 2538 && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT) 2539 ; 2540 else if (!bfd_link_relocatable (info)) 2541 (*info->callbacks->undefined_symbol) 2542 (info, h->root.root.string, input_bfd, 2543 input_section, offset, 2544 (info->unresolved_syms_in_objects == RM_GENERATE_ERROR 2545 || ELF_ST_VISIBILITY (h->other))); 2546 } 2547 2548 if (sec != NULL && discarded_section (sec)) 2549 RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section, 2550 rel, 1, relend, howto, 0, contents); 2551 2552 if (bfd_link_relocatable (info) && !use_rel) 2553 { 2554 /* This is a relocatable link. We don't have to change 2555 anything, unless the reloc is against a section symbol, 2556 in which case we have to adjust according to where the 2557 section symbol winds up in the output section. */ 2558 if (sym != NULL && ELF_ST_TYPE (sym->st_info) == STT_SECTION) 2559 rel->r_addend += sec->output_offset; 2560 continue; 2561 } 2562 2563 if (bfd_link_relocatable (info) && use_rel) 2564 { 2565 /* This is a relocatable link. We don't have to change 2566 anything, unless the reloc is against a section symbol, 2567 in which case we have to adjust according to where the 2568 section symbol winds up in the output section. */ 2569 if (sym == NULL || ELF_ST_TYPE (sym->st_info) != STT_SECTION) 2570 continue; 2571 2572 addend += sec->output_offset; 2573 2574 /* If partial_inplace, we need to store any additional addend 2575 back in the section. */ 2576 if (! howto->partial_inplace) 2577 continue; 2578 /* ??? Here is a nice place to call a special_function 2579 like handler. */ 2580 if (r_type != R_M32R_HI16_SLO && r_type != R_M32R_HI16_ULO) 2581 r = _bfd_relocate_contents (howto, input_bfd, 2582 addend, contents + offset); 2583 else 2584 { 2585 Elf_Internal_Rela *lorel; 2586 2587 /* We allow an arbitrary number of HI16 relocs before the 2588 LO16 reloc. This permits gcc to emit the HI and LO relocs 2589 itself. */ 2590 for (lorel = rel + 1; 2591 (lorel < relend 2592 && (ELF32_R_TYPE (lorel->r_info) == R_M32R_HI16_SLO 2593 || ELF32_R_TYPE (lorel->r_info) == R_M32R_HI16_ULO)); 2594 lorel++) 2595 continue; 2596 if (lorel < relend 2597 && ELF32_R_TYPE (lorel->r_info) == R_M32R_LO16) 2598 { 2599 m32r_elf_relocate_hi16 (input_bfd, r_type, rel, lorel, 2600 contents, addend); 2601 r = bfd_reloc_ok; 2602 } 2603 else 2604 r = _bfd_relocate_contents (howto, input_bfd, 2605 addend, contents + offset); 2606 } 2607 } 2608 else 2609 { 2610 /* Sanity check the address. */ 2611 if (offset > high_address) 2612 { 2613 r = bfd_reloc_outofrange; 2614 goto check_reloc; 2615 } 2616 2617 switch ((int) r_type) 2618 { 2619 case R_M32R_GOTOFF: 2620 /* Relocation is relative to the start of the global offset 2621 table (for ld24 rx, #uimm24). eg access at label+addend 2622 2623 ld24 rx. #label@GOTOFF + addend 2624 sub rx, r12. */ 2625 2626 BFD_ASSERT (sgot != NULL); 2627 2628 relocation = -(relocation - sgot->output_section->vma); 2629 rel->r_addend = -rel->r_addend; 2630 break; 2631 2632 case R_M32R_GOTOFF_HI_ULO: 2633 case R_M32R_GOTOFF_HI_SLO: 2634 case R_M32R_GOTOFF_LO: 2635 BFD_ASSERT (sgot != NULL); 2636 2637 relocation -= sgot->output_section->vma; 2638 2639 if ((r_type == R_M32R_GOTOFF_HI_SLO) 2640 && ((relocation + rel->r_addend) & 0x8000)) 2641 rel->r_addend += 0x10000; 2642 break; 2643 2644 case R_M32R_GOTPC24: 2645 /* .got(_GLOBAL_OFFSET_TABLE_) - pc relocation 2646 ld24 rx,#_GLOBAL_OFFSET_TABLE_ 2647 */ 2648 relocation = sgot->output_section->vma; 2649 break; 2650 2651 case R_M32R_GOTPC_HI_ULO: 2652 case R_M32R_GOTPC_HI_SLO: 2653 case R_M32R_GOTPC_LO: 2654 { 2655 /* .got(_GLOBAL_OFFSET_TABLE_) - pc relocation 2656 bl .+4 2657 seth rx,#high(_GLOBAL_OFFSET_TABLE_) 2658 or3 rx,rx,#low(_GLOBAL_OFFSET_TABLE_ +4) 2659 or 2660 bl .+4 2661 seth rx,#shigh(_GLOBAL_OFFSET_TABLE_) 2662 add3 rx,rx,#low(_GLOBAL_OFFSET_TABLE_ +4) 2663 */ 2664 relocation = sgot->output_section->vma; 2665 relocation -= (input_section->output_section->vma 2666 + input_section->output_offset 2667 + rel->r_offset); 2668 if ((r_type == R_M32R_GOTPC_HI_SLO) 2669 && ((relocation + rel->r_addend) & 0x8000)) 2670 rel->r_addend += 0x10000; 2671 2672 break; 2673 } 2674 case R_M32R_GOT16_HI_ULO: 2675 case R_M32R_GOT16_HI_SLO: 2676 case R_M32R_GOT16_LO: 2677 /* Fall through. */ 2678 case R_M32R_GOT24: 2679 /* Relocation is to the entry for this symbol in the global 2680 offset table. */ 2681 BFD_ASSERT (sgot != NULL); 2682 2683 if (h != NULL) 2684 { 2685 bfd_boolean dyn; 2686 bfd_vma off; 2687 2688 off = h->got.offset; 2689 BFD_ASSERT (off != (bfd_vma) -1); 2690 2691 dyn = htab->root.dynamic_sections_created; 2692 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 2693 bfd_link_pic (info), 2694 h) 2695 || (bfd_link_pic (info) 2696 && (info->symbolic 2697 || h->dynindx == -1 2698 || h->forced_local) 2699 && h->def_regular)) 2700 { 2701 /* This is actually a static link, or it is a 2702 -Bsymbolic link and the symbol is defined 2703 locally, or the symbol was forced to be local 2704 because of a version file. We must initialize 2705 this entry in the global offset table. Since the 2706 offset must always be a multiple of 4, we use the 2707 least significant bit to record whether we have 2708 initialized it already. 2709 2710 When doing a dynamic link, we create a .rela.got 2711 relocation entry to initialize the value. This 2712 is done in the finish_dynamic_symbol routine. */ 2713 if ((off & 1) != 0) 2714 off &= ~1; 2715 else 2716 { 2717 bfd_put_32 (output_bfd, relocation, 2718 sgot->contents + off); 2719 h->got.offset |= 1; 2720 } 2721 } 2722 2723 relocation = sgot->output_offset + off; 2724 } 2725 else 2726 { 2727 bfd_vma off; 2728 bfd_byte *loc; 2729 2730 BFD_ASSERT (local_got_offsets != NULL 2731 && local_got_offsets[r_symndx] != (bfd_vma) -1); 2732 2733 off = local_got_offsets[r_symndx]; 2734 2735 /* The offset must always be a multiple of 4. We use 2736 the least significant bit to record whether we have 2737 already processed this entry. */ 2738 if ((off & 1) != 0) 2739 off &= ~1; 2740 else 2741 { 2742 bfd_put_32 (output_bfd, relocation, sgot->contents + off); 2743 2744 if (bfd_link_pic (info)) 2745 { 2746 asection *srelgot; 2747 Elf_Internal_Rela outrel; 2748 2749 /* We need to generate a R_M32R_RELATIVE reloc 2750 for the dynamic linker. */ 2751 srelgot = htab->root.srelgot; 2752 BFD_ASSERT (srelgot != NULL); 2753 2754 outrel.r_offset = (sgot->output_section->vma 2755 + sgot->output_offset 2756 + off); 2757 outrel.r_info = ELF32_R_INFO (0, R_M32R_RELATIVE); 2758 outrel.r_addend = relocation; 2759 loc = srelgot->contents; 2760 loc += srelgot->reloc_count * sizeof (Elf32_External_Rela); 2761 bfd_elf32_swap_reloca_out (output_bfd, &outrel,loc); 2762 ++srelgot->reloc_count; 2763 } 2764 2765 local_got_offsets[r_symndx] |= 1; 2766 } 2767 2768 relocation = sgot->output_offset + off; 2769 } 2770 if ((r_type == R_M32R_GOT16_HI_SLO) 2771 && ((relocation + rel->r_addend) & 0x8000)) 2772 rel->r_addend += 0x10000; 2773 2774 break; 2775 2776 case R_M32R_26_PLTREL: 2777 /* Relocation is to the entry for this symbol in the 2778 procedure linkage table. */ 2779 2780 /* The native assembler will generate a 26_PLTREL reloc 2781 for a local symbol if you assemble a call from one 2782 section to another when using -K pic. */ 2783 if (h == NULL) 2784 break; 2785 2786 if (h->forced_local) 2787 break; 2788 2789 if (h->plt.offset == (bfd_vma) -1) 2790 /* We didn't make a PLT entry for this symbol. This 2791 happens when statically linking PIC code, or when 2792 using -Bsymbolic. */ 2793 break; 2794 2795 relocation = (splt->output_section->vma 2796 + splt->output_offset 2797 + h->plt.offset); 2798 break; 2799 2800 case R_M32R_HI16_SLO_RELA: 2801 if ((relocation + rel->r_addend) & 0x8000) 2802 rel->r_addend += 0x10000; 2803 /* Fall through. */ 2804 2805 case R_M32R_16_RELA: 2806 case R_M32R_24_RELA: 2807 case R_M32R_32_RELA: 2808 case R_M32R_REL32: 2809 case R_M32R_10_PCREL_RELA: 2810 case R_M32R_18_PCREL_RELA: 2811 case R_M32R_26_PCREL_RELA: 2812 case R_M32R_HI16_ULO_RELA: 2813 case R_M32R_LO16_RELA: 2814 if (bfd_link_pic (info) 2815 && r_symndx != STN_UNDEF 2816 && (input_section->flags & SEC_ALLOC) != 0 2817 && (( r_type != R_M32R_10_PCREL_RELA 2818 && r_type != R_M32R_18_PCREL_RELA 2819 && r_type != R_M32R_26_PCREL_RELA 2820 && r_type != R_M32R_REL32) 2821 || (h != NULL 2822 && h->dynindx != -1 2823 && (! info->symbolic 2824 || !h->def_regular)))) 2825 { 2826 Elf_Internal_Rela outrel; 2827 bfd_boolean skip, relocate; 2828 bfd_byte *loc; 2829 2830 /* When generating a shared object, these relocations 2831 are copied into the output file to be resolved at run 2832 time. */ 2833 if (sreloc == NULL) 2834 { 2835 sreloc = _bfd_elf_get_dynamic_reloc_section 2836 (input_bfd, input_section, /*rela?*/ TRUE); 2837 if (sreloc == NULL) 2838 return FALSE; 2839 } 2840 2841 skip = FALSE; 2842 relocate = FALSE; 2843 2844 outrel.r_offset = _bfd_elf_section_offset (output_bfd, 2845 info, 2846 input_section, 2847 rel->r_offset); 2848 if (outrel.r_offset == (bfd_vma) -1) 2849 skip = TRUE; 2850 else if (outrel.r_offset == (bfd_vma) -2) 2851 skip = relocate = TRUE; 2852 outrel.r_offset += (input_section->output_section->vma 2853 + input_section->output_offset); 2854 2855 if (skip) 2856 memset (&outrel, 0, sizeof outrel); 2857 else if ( r_type == R_M32R_10_PCREL_RELA 2858 || r_type == R_M32R_18_PCREL_RELA 2859 || r_type == R_M32R_26_PCREL_RELA 2860 || r_type == R_M32R_REL32) 2861 { 2862 BFD_ASSERT (h != NULL && h->dynindx != -1); 2863 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type); 2864 outrel.r_addend = rel->r_addend; 2865 } 2866 else 2867 { 2868 /* h->dynindx may be -1 if this symbol was marked to 2869 become local. */ 2870 if (h == NULL 2871 || ((info->symbolic || h->dynindx == -1) 2872 && h->def_regular)) 2873 { 2874 relocate = TRUE; 2875 outrel.r_info = ELF32_R_INFO (0, R_M32R_RELATIVE); 2876 outrel.r_addend = relocation + rel->r_addend; 2877 } 2878 else 2879 { 2880 BFD_ASSERT (h->dynindx != -1); 2881 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type); 2882 outrel.r_addend = relocation + rel->r_addend; 2883 } 2884 } 2885 2886 loc = sreloc->contents; 2887 loc += sreloc->reloc_count * sizeof (Elf32_External_Rela); 2888 bfd_elf32_swap_reloca_out (output_bfd, &outrel,loc); 2889 ++sreloc->reloc_count; 2890 2891 /* If this reloc is against an external symbol, we do 2892 not want to fiddle with the addend. Otherwise, we 2893 need to include the symbol value so that it becomes 2894 an addend for the dynamic reloc. */ 2895 if (! relocate) 2896 continue; 2897 break; 2898 } 2899 else if (r_type != R_M32R_10_PCREL_RELA) 2900 break; 2901 /* Fall through. */ 2902 2903 case (int) R_M32R_10_PCREL : 2904 r = m32r_elf_do_10_pcrel_reloc (input_bfd, howto, input_section, 2905 contents, offset, 2906 sec, relocation, addend); 2907 goto check_reloc; 2908 2909 case (int) R_M32R_HI16_SLO : 2910 case (int) R_M32R_HI16_ULO : 2911 { 2912 Elf_Internal_Rela *lorel; 2913 2914 /* We allow an arbitrary number of HI16 relocs before the 2915 LO16 reloc. This permits gcc to emit the HI and LO relocs 2916 itself. */ 2917 for (lorel = rel + 1; 2918 (lorel < relend 2919 && (ELF32_R_TYPE (lorel->r_info) == R_M32R_HI16_SLO 2920 || ELF32_R_TYPE (lorel->r_info) == R_M32R_HI16_ULO)); 2921 lorel++) 2922 continue; 2923 if (lorel < relend 2924 && ELF32_R_TYPE (lorel->r_info) == R_M32R_LO16) 2925 { 2926 m32r_elf_relocate_hi16 (input_bfd, r_type, rel, lorel, 2927 contents, relocation + addend); 2928 r = bfd_reloc_ok; 2929 } 2930 else 2931 r = _bfd_final_link_relocate (howto, input_bfd, input_section, 2932 contents, offset, 2933 relocation, addend); 2934 } 2935 2936 goto check_reloc; 2937 2938 case (int) R_M32R_SDA16_RELA: 2939 case (int) R_M32R_SDA16 : 2940 { 2941 const char *name; 2942 2943 BFD_ASSERT (sec != NULL); 2944 name = bfd_get_section_name (sec->owner, sec); 2945 2946 if ( strcmp (name, ".sdata") == 0 2947 || strcmp (name, ".sbss") == 0 2948 || strcmp (name, ".scommon") == 0) 2949 { 2950 bfd_vma sda_base; 2951 bfd *out_bfd = sec->output_section->owner; 2952 2953 r = m32r_elf_final_sda_base (out_bfd, info, 2954 &errmsg, 2955 &sda_base); 2956 if (r != bfd_reloc_ok) 2957 { 2958 ret = FALSE; 2959 goto check_reloc; 2960 } 2961 2962 /* At this point `relocation' contains the object's 2963 address. */ 2964 relocation -= sda_base; 2965 /* Now it contains the offset from _SDA_BASE_. */ 2966 } 2967 else 2968 { 2969 _bfd_error_handler 2970 /* xgettext:c-format */ 2971 (_("%B: The target (%s) of an %s relocation is in the wrong section (%A)"), 2972 input_bfd, 2973 sym_name, 2974 m32r_elf_howto_table[(int) r_type].name, 2975 sec); 2976 /*bfd_set_error (bfd_error_bad_value); ??? why? */ 2977 ret = FALSE; 2978 continue; 2979 } 2980 } 2981 /* Fall through. */ 2982 2983 default : /* OLD_M32R_RELOC */ 2984 2985 r = _bfd_final_link_relocate (howto, input_bfd, input_section, 2986 contents, offset, 2987 relocation, addend); 2988 goto check_reloc; 2989 } 2990 2991 r = _bfd_final_link_relocate (howto, input_bfd, input_section, 2992 contents, rel->r_offset, 2993 relocation, rel->r_addend); 2994 2995 } 2996 2997 check_reloc: 2998 2999 if (r != bfd_reloc_ok) 3000 { 3001 /* FIXME: This should be generic enough to go in a utility. */ 3002 const char *name; 3003 3004 if (h != NULL) 3005 name = h->root.root.string; 3006 else 3007 { 3008 name = (bfd_elf_string_from_elf_section 3009 (input_bfd, symtab_hdr->sh_link, sym->st_name)); 3010 if (name == NULL || *name == '\0') 3011 name = bfd_section_name (input_bfd, sec); 3012 } 3013 3014 if (errmsg != NULL) 3015 goto common_error; 3016 3017 switch (r) 3018 { 3019 case bfd_reloc_overflow: 3020 (*info->callbacks->reloc_overflow) 3021 (info, (h ? &h->root : NULL), name, howto->name, 3022 (bfd_vma) 0, input_bfd, input_section, offset); 3023 break; 3024 3025 case bfd_reloc_undefined: 3026 (*info->callbacks->undefined_symbol) 3027 (info, name, input_bfd, input_section, offset, TRUE); 3028 break; 3029 3030 case bfd_reloc_outofrange: 3031 errmsg = _("internal error: out of range error"); 3032 goto common_error; 3033 3034 case bfd_reloc_notsupported: 3035 errmsg = _("internal error: unsupported relocation error"); 3036 goto common_error; 3037 3038 case bfd_reloc_dangerous: 3039 errmsg = _("internal error: dangerous error"); 3040 goto common_error; 3041 3042 default: 3043 errmsg = _("internal error: unknown error"); 3044 /* fall through */ 3045 3046 common_error: 3047 (*info->callbacks->warning) (info, errmsg, name, input_bfd, 3048 input_section, offset); 3049 break; 3050 } 3051 } 3052 } 3053 3054 return ret; 3055 } 3056 3057 /* Finish up dynamic symbol handling. We set the contents of various 3058 dynamic sections here. */ 3059 3060 static bfd_boolean 3061 m32r_elf_finish_dynamic_symbol (bfd *output_bfd, 3062 struct bfd_link_info *info, 3063 struct elf_link_hash_entry *h, 3064 Elf_Internal_Sym *sym) 3065 { 3066 struct elf_m32r_link_hash_table *htab; 3067 bfd_byte *loc; 3068 3069 #ifdef DEBUG_PIC 3070 printf ("m32r_elf_finish_dynamic_symbol()\n"); 3071 #endif 3072 3073 htab = m32r_elf_hash_table (info); 3074 if (htab == NULL) 3075 return FALSE; 3076 3077 if (h->plt.offset != (bfd_vma) -1) 3078 { 3079 asection *splt; 3080 asection *sgot; 3081 asection *srela; 3082 3083 bfd_vma plt_index; 3084 bfd_vma got_offset; 3085 Elf_Internal_Rela rela; 3086 3087 /* This symbol has an entry in the procedure linkage table. Set 3088 it up. */ 3089 3090 BFD_ASSERT (h->dynindx != -1); 3091 3092 splt = htab->root.splt; 3093 sgot = htab->root.sgotplt; 3094 srela = htab->root.srelplt; 3095 BFD_ASSERT (splt != NULL && sgot != NULL && srela != NULL); 3096 3097 /* Get the index in the procedure linkage table which 3098 corresponds to this symbol. This is the index of this symbol 3099 in all the symbols for which we are making plt entries. The 3100 first entry in the procedure linkage table is reserved. */ 3101 plt_index = h->plt.offset / PLT_ENTRY_SIZE - 1; 3102 3103 /* Get the offset into the .got table of the entry that 3104 corresponds to this function. Each .got entry is 4 bytes. 3105 The first three are reserved. */ 3106 got_offset = (plt_index + 3) * 4; 3107 3108 /* Fill in the entry in the procedure linkage table. */ 3109 if (! bfd_link_pic (info)) 3110 { 3111 bfd_put_32 (output_bfd, 3112 (PLT_ENTRY_WORD0b 3113 + (((sgot->output_section->vma 3114 + sgot->output_offset 3115 + got_offset) >> 16) & 0xffff)), 3116 splt->contents + h->plt.offset); 3117 bfd_put_32 (output_bfd, 3118 (PLT_ENTRY_WORD1b 3119 + ((sgot->output_section->vma 3120 + sgot->output_offset 3121 + got_offset) & 0xffff)), 3122 splt->contents + h->plt.offset + 4); 3123 bfd_put_32 (output_bfd, PLT_ENTRY_WORD2, 3124 splt->contents + h->plt.offset + 8); 3125 bfd_put_32 (output_bfd, 3126 (PLT_ENTRY_WORD3 3127 + plt_index * sizeof (Elf32_External_Rela)), 3128 splt->contents + h->plt.offset + 12); 3129 bfd_put_32 (output_bfd, 3130 (PLT_ENTRY_WORD4 3131 + (((unsigned int) ((- (h->plt.offset + 16)) >> 2)) & 0xffffff)), 3132 splt->contents + h->plt.offset + 16); 3133 } 3134 else 3135 { 3136 bfd_put_32 (output_bfd, 3137 PLT_ENTRY_WORD0 + got_offset, 3138 splt->contents + h->plt.offset); 3139 bfd_put_32 (output_bfd, PLT_ENTRY_WORD1, 3140 splt->contents + h->plt.offset + 4); 3141 bfd_put_32 (output_bfd, PLT_ENTRY_WORD2, 3142 splt->contents + h->plt.offset + 8); 3143 bfd_put_32 (output_bfd, 3144 (PLT_ENTRY_WORD3 3145 + plt_index * sizeof (Elf32_External_Rela)), 3146 splt->contents + h->plt.offset + 12); 3147 bfd_put_32 (output_bfd, 3148 (PLT_ENTRY_WORD4 3149 + (((unsigned int) ((- (h->plt.offset + 16)) >> 2)) & 0xffffff)), 3150 splt->contents + h->plt.offset + 16); 3151 } 3152 3153 /* Fill in the entry in the global offset table. */ 3154 bfd_put_32 (output_bfd, 3155 (splt->output_section->vma 3156 + splt->output_offset 3157 + h->plt.offset 3158 + 12), /* same offset */ 3159 sgot->contents + got_offset); 3160 3161 /* Fill in the entry in the .rela.plt section. */ 3162 rela.r_offset = (sgot->output_section->vma 3163 + sgot->output_offset 3164 + got_offset); 3165 rela.r_info = ELF32_R_INFO (h->dynindx, R_M32R_JMP_SLOT); 3166 rela.r_addend = 0; 3167 loc = srela->contents; 3168 loc += plt_index * sizeof (Elf32_External_Rela); 3169 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); 3170 3171 if (!h->def_regular) 3172 { 3173 /* Mark the symbol as undefined, rather than as defined in 3174 the .plt section. Leave the value alone. */ 3175 sym->st_shndx = SHN_UNDEF; 3176 } 3177 } 3178 3179 if (h->got.offset != (bfd_vma) -1) 3180 { 3181 asection *sgot; 3182 asection *srela; 3183 Elf_Internal_Rela rela; 3184 3185 /* This symbol has an entry in the global offset table. Set it 3186 up. */ 3187 3188 sgot = htab->root.sgot; 3189 srela = htab->root.srelgot; 3190 BFD_ASSERT (sgot != NULL && srela != NULL); 3191 3192 rela.r_offset = (sgot->output_section->vma 3193 + sgot->output_offset 3194 + (h->got.offset &~ 1)); 3195 3196 /* If this is a -Bsymbolic link, and the symbol is defined 3197 locally, we just want to emit a RELATIVE reloc. Likewise if 3198 the symbol was forced to be local because of a version file. 3199 The entry in the global offset table will already have been 3200 initialized in the relocate_section function. */ 3201 if (bfd_link_pic (info) 3202 && (info->symbolic 3203 || h->dynindx == -1 3204 || h->forced_local) 3205 && h->def_regular) 3206 { 3207 rela.r_info = ELF32_R_INFO (0, R_M32R_RELATIVE); 3208 rela.r_addend = (h->root.u.def.value 3209 + h->root.u.def.section->output_section->vma 3210 + h->root.u.def.section->output_offset); 3211 } 3212 else 3213 { 3214 BFD_ASSERT ((h->got.offset & 1) == 0); 3215 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + h->got.offset); 3216 rela.r_info = ELF32_R_INFO (h->dynindx, R_M32R_GLOB_DAT); 3217 rela.r_addend = 0; 3218 } 3219 3220 loc = srela->contents; 3221 loc += srela->reloc_count * sizeof (Elf32_External_Rela); 3222 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); 3223 ++srela->reloc_count; 3224 } 3225 3226 if (h->needs_copy) 3227 { 3228 asection *s; 3229 Elf_Internal_Rela rela; 3230 3231 /* This symbols needs a copy reloc. Set it up. */ 3232 3233 BFD_ASSERT (h->dynindx != -1 3234 && (h->root.type == bfd_link_hash_defined 3235 || h->root.type == bfd_link_hash_defweak)); 3236 3237 s = bfd_get_linker_section (htab->root.dynobj, ".rela.bss"); 3238 BFD_ASSERT (s != NULL); 3239 3240 rela.r_offset = (h->root.u.def.value 3241 + h->root.u.def.section->output_section->vma 3242 + h->root.u.def.section->output_offset); 3243 rela.r_info = ELF32_R_INFO (h->dynindx, R_M32R_COPY); 3244 rela.r_addend = 0; 3245 loc = s->contents; 3246 loc += s->reloc_count * sizeof (Elf32_External_Rela); 3247 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); 3248 ++s->reloc_count; 3249 } 3250 3251 /* Mark some specially defined symbols as absolute. */ 3252 if (h == htab->root.hdynamic || h == htab->root.hgot) 3253 sym->st_shndx = SHN_ABS; 3254 3255 return TRUE; 3256 } 3257 3258 3259 /* Finish up the dynamic sections. */ 3260 3261 static bfd_boolean 3262 m32r_elf_finish_dynamic_sections (bfd *output_bfd, 3263 struct bfd_link_info *info) 3264 { 3265 struct elf_m32r_link_hash_table *htab; 3266 bfd *dynobj; 3267 asection *sdyn; 3268 asection *sgot; 3269 3270 #ifdef DEBUG_PIC 3271 printf ("m32r_elf_finish_dynamic_sections()\n"); 3272 #endif 3273 3274 htab = m32r_elf_hash_table (info); 3275 if (htab == NULL) 3276 return FALSE; 3277 3278 dynobj = htab->root.dynobj; 3279 3280 sgot = htab->root.sgotplt; 3281 sdyn = bfd_get_linker_section (dynobj, ".dynamic"); 3282 3283 if (htab->root.dynamic_sections_created) 3284 { 3285 asection *splt; 3286 Elf32_External_Dyn *dyncon, *dynconend; 3287 3288 BFD_ASSERT (sgot != NULL && sdyn != NULL); 3289 3290 dyncon = (Elf32_External_Dyn *) sdyn->contents; 3291 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size); 3292 3293 for (; dyncon < dynconend; dyncon++) 3294 { 3295 Elf_Internal_Dyn dyn; 3296 asection *s; 3297 3298 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn); 3299 3300 switch (dyn.d_tag) 3301 { 3302 default: 3303 break; 3304 3305 case DT_PLTGOT: 3306 s = htab->root.sgotplt; 3307 goto get_vma; 3308 case DT_JMPREL: 3309 s = htab->root.srelplt; 3310 get_vma: 3311 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; 3312 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); 3313 break; 3314 3315 case DT_PLTRELSZ: 3316 s = htab->root.srelplt; 3317 dyn.d_un.d_val = s->size; 3318 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); 3319 break; 3320 } 3321 } 3322 3323 /* Fill in the first entry in the procedure linkage table. */ 3324 splt = htab->root.splt; 3325 if (splt && splt->size > 0) 3326 { 3327 if (bfd_link_pic (info)) 3328 { 3329 bfd_put_32 (output_bfd, PLT0_PIC_ENTRY_WORD0, splt->contents); 3330 bfd_put_32 (output_bfd, PLT0_PIC_ENTRY_WORD1, splt->contents + 4); 3331 bfd_put_32 (output_bfd, PLT0_PIC_ENTRY_WORD2, splt->contents + 8); 3332 bfd_put_32 (output_bfd, PLT0_PIC_ENTRY_WORD3, splt->contents + 12); 3333 bfd_put_32 (output_bfd, PLT0_PIC_ENTRY_WORD4, splt->contents + 16); 3334 } 3335 else 3336 { 3337 unsigned long addr; 3338 /* addr = .got + 4 */ 3339 addr = sgot->output_section->vma + sgot->output_offset + 4; 3340 bfd_put_32 (output_bfd, 3341 PLT0_ENTRY_WORD0 | ((addr >> 16) & 0xffff), 3342 splt->contents); 3343 bfd_put_32 (output_bfd, 3344 PLT0_ENTRY_WORD1 | (addr & 0xffff), 3345 splt->contents + 4); 3346 bfd_put_32 (output_bfd, PLT0_ENTRY_WORD2, splt->contents + 8); 3347 bfd_put_32 (output_bfd, PLT0_ENTRY_WORD3, splt->contents + 12); 3348 bfd_put_32 (output_bfd, PLT0_ENTRY_WORD4, splt->contents + 16); 3349 } 3350 3351 elf_section_data (splt->output_section)->this_hdr.sh_entsize = 3352 PLT_ENTRY_SIZE; 3353 } 3354 } 3355 3356 /* Fill in the first three entries in the global offset table. */ 3357 if (sgot && sgot->size > 0) 3358 { 3359 if (sdyn == NULL) 3360 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents); 3361 else 3362 bfd_put_32 (output_bfd, 3363 sdyn->output_section->vma + sdyn->output_offset, 3364 sgot->contents); 3365 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 4); 3366 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 8); 3367 3368 elf_section_data (sgot->output_section)->this_hdr.sh_entsize = 4; 3369 } 3370 3371 return TRUE; 3372 } 3373 3374 3375 /* Set the right machine number. */ 3376 3377 static bfd_boolean 3378 m32r_elf_object_p (bfd *abfd) 3379 { 3380 switch (elf_elfheader (abfd)->e_flags & EF_M32R_ARCH) 3381 { 3382 default: 3383 case E_M32R_ARCH: (void) bfd_default_set_arch_mach (abfd, bfd_arch_m32r, bfd_mach_m32r); break; 3384 case E_M32RX_ARCH: (void) bfd_default_set_arch_mach (abfd, bfd_arch_m32r, bfd_mach_m32rx); break; 3385 case E_M32R2_ARCH: (void) bfd_default_set_arch_mach (abfd, bfd_arch_m32r, bfd_mach_m32r2); break; 3386 } 3387 return TRUE; 3388 } 3389 3390 /* Store the machine number in the flags field. */ 3391 3392 static void 3393 m32r_elf_final_write_processing (bfd *abfd, 3394 bfd_boolean linker ATTRIBUTE_UNUSED) 3395 { 3396 unsigned long val; 3397 3398 switch (bfd_get_mach (abfd)) 3399 { 3400 default: 3401 case bfd_mach_m32r: val = E_M32R_ARCH; break; 3402 case bfd_mach_m32rx: val = E_M32RX_ARCH; break; 3403 case bfd_mach_m32r2: val = E_M32R2_ARCH; break; 3404 } 3405 3406 elf_elfheader (abfd)->e_flags &=~ EF_M32R_ARCH; 3407 elf_elfheader (abfd)->e_flags |= val; 3408 } 3409 3410 /* Function to keep M32R specific file flags. */ 3411 3412 static bfd_boolean 3413 m32r_elf_set_private_flags (bfd *abfd, flagword flags) 3414 { 3415 BFD_ASSERT (!elf_flags_init (abfd) 3416 || elf_elfheader (abfd)->e_flags == flags); 3417 3418 elf_elfheader (abfd)->e_flags = flags; 3419 elf_flags_init (abfd) = TRUE; 3420 return TRUE; 3421 } 3422 3423 /* Merge backend specific data from an object file to the output 3424 object file when linking. */ 3425 3426 static bfd_boolean 3427 m32r_elf_merge_private_bfd_data (bfd *ibfd, struct bfd_link_info *info) 3428 { 3429 bfd *obfd = info->output_bfd; 3430 flagword out_flags; 3431 flagword in_flags; 3432 3433 if ( bfd_get_flavour (ibfd) != bfd_target_elf_flavour 3434 || bfd_get_flavour (obfd) != bfd_target_elf_flavour) 3435 return TRUE; 3436 3437 in_flags = elf_elfheader (ibfd)->e_flags; 3438 out_flags = elf_elfheader (obfd)->e_flags; 3439 3440 if (! elf_flags_init (obfd)) 3441 { 3442 /* If the input is the default architecture then do not 3443 bother setting the flags for the output architecture, 3444 instead allow future merges to do this. If no future 3445 merges ever set these flags then they will retain their 3446 unitialised values, which surprise surprise, correspond 3447 to the default values. */ 3448 if (bfd_get_arch_info (ibfd)->the_default) 3449 return TRUE; 3450 3451 elf_flags_init (obfd) = TRUE; 3452 elf_elfheader (obfd)->e_flags = in_flags; 3453 3454 if (bfd_get_arch (obfd) == bfd_get_arch (ibfd) 3455 && bfd_get_arch_info (obfd)->the_default) 3456 return bfd_set_arch_mach (obfd, bfd_get_arch (ibfd), 3457 bfd_get_mach (ibfd)); 3458 3459 return TRUE; 3460 } 3461 3462 /* Check flag compatibility. */ 3463 if (in_flags == out_flags) 3464 return TRUE; 3465 3466 if ((in_flags & EF_M32R_ARCH) != (out_flags & EF_M32R_ARCH)) 3467 { 3468 if ( ((in_flags & EF_M32R_ARCH) != E_M32R_ARCH) 3469 || ((out_flags & EF_M32R_ARCH) == E_M32R_ARCH) 3470 || ((in_flags & EF_M32R_ARCH) == E_M32R2_ARCH)) 3471 { 3472 _bfd_error_handler 3473 (_("%B: Instruction set mismatch with previous modules"), ibfd); 3474 3475 bfd_set_error (bfd_error_bad_value); 3476 return FALSE; 3477 } 3478 } 3479 3480 return TRUE; 3481 } 3482 3483 /* Display the flags field. */ 3484 3485 static bfd_boolean 3486 m32r_elf_print_private_bfd_data (bfd *abfd, void * ptr) 3487 { 3488 FILE * file = (FILE *) ptr; 3489 3490 BFD_ASSERT (abfd != NULL && ptr != NULL); 3491 3492 _bfd_elf_print_private_bfd_data (abfd, ptr); 3493 3494 fprintf (file, _("private flags = %lx"), elf_elfheader (abfd)->e_flags); 3495 3496 switch (elf_elfheader (abfd)->e_flags & EF_M32R_ARCH) 3497 { 3498 default: 3499 case E_M32R_ARCH: fprintf (file, _(": m32r instructions")); break; 3500 case E_M32RX_ARCH: fprintf (file, _(": m32rx instructions")); break; 3501 case E_M32R2_ARCH: fprintf (file, _(": m32r2 instructions")); break; 3502 } 3503 3504 fputc ('\n', file); 3505 3506 return TRUE; 3507 } 3508 3509 static asection * 3510 m32r_elf_gc_mark_hook (asection *sec, 3511 struct bfd_link_info *info, 3512 Elf_Internal_Rela *rel, 3513 struct elf_link_hash_entry *h, 3514 Elf_Internal_Sym *sym) 3515 { 3516 if (h != NULL) 3517 switch (ELF32_R_TYPE (rel->r_info)) 3518 { 3519 case R_M32R_GNU_VTINHERIT: 3520 case R_M32R_GNU_VTENTRY: 3521 case R_M32R_RELA_GNU_VTINHERIT: 3522 case R_M32R_RELA_GNU_VTENTRY: 3523 return NULL; 3524 } 3525 3526 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym); 3527 } 3528 3529 /* Look through the relocs for a section during the first phase. 3530 Since we don't do .gots or .plts, we just need to consider the 3531 virtual table relocs for gc. */ 3532 3533 static bfd_boolean 3534 m32r_elf_check_relocs (bfd *abfd, 3535 struct bfd_link_info *info, 3536 asection *sec, 3537 const Elf_Internal_Rela *relocs) 3538 { 3539 Elf_Internal_Shdr *symtab_hdr; 3540 struct elf_link_hash_entry **sym_hashes; 3541 const Elf_Internal_Rela *rel; 3542 const Elf_Internal_Rela *rel_end; 3543 struct elf_m32r_link_hash_table *htab; 3544 bfd *dynobj; 3545 asection *sreloc; 3546 3547 if (bfd_link_relocatable (info)) 3548 return TRUE; 3549 3550 /* Don't do anything special with non-loaded, non-alloced sections. 3551 In particular, any relocs in such sections should not affect GOT 3552 and PLT reference counting (ie. we don't allow them to create GOT 3553 or PLT entries), there's no possibility or desire to optimize TLS 3554 relocs, and there's not much point in propagating relocs to shared 3555 libs that the dynamic linker won't relocate. */ 3556 if ((sec->flags & SEC_ALLOC) == 0) 3557 return TRUE; 3558 3559 sreloc = NULL; 3560 symtab_hdr = &elf_tdata (abfd)->symtab_hdr; 3561 sym_hashes = elf_sym_hashes (abfd); 3562 3563 htab = m32r_elf_hash_table (info); 3564 if (htab == NULL) 3565 return FALSE; 3566 3567 dynobj = htab->root.dynobj; 3568 3569 rel_end = relocs + sec->reloc_count; 3570 for (rel = relocs; rel < rel_end; rel++) 3571 { 3572 int r_type; 3573 struct elf_link_hash_entry *h; 3574 unsigned long r_symndx; 3575 3576 r_symndx = ELF32_R_SYM (rel->r_info); 3577 r_type = ELF32_R_TYPE (rel->r_info); 3578 if (r_symndx < symtab_hdr->sh_info) 3579 h = NULL; 3580 else 3581 { 3582 h = sym_hashes[r_symndx - symtab_hdr->sh_info]; 3583 while (h->root.type == bfd_link_hash_indirect 3584 || h->root.type == bfd_link_hash_warning) 3585 h = (struct elf_link_hash_entry *) h->root.u.i.link; 3586 } 3587 3588 /* Some relocs require a global offset table. */ 3589 if (htab->root.sgot == NULL) 3590 { 3591 switch (r_type) 3592 { 3593 case R_M32R_GOT16_HI_ULO: 3594 case R_M32R_GOT16_HI_SLO: 3595 case R_M32R_GOTOFF: 3596 case R_M32R_GOTOFF_HI_ULO: 3597 case R_M32R_GOTOFF_HI_SLO: 3598 case R_M32R_GOTOFF_LO: 3599 case R_M32R_GOT16_LO: 3600 case R_M32R_GOTPC24: 3601 case R_M32R_GOTPC_HI_ULO: 3602 case R_M32R_GOTPC_HI_SLO: 3603 case R_M32R_GOTPC_LO: 3604 case R_M32R_GOT24: 3605 if (dynobj == NULL) 3606 htab->root.dynobj = dynobj = abfd; 3607 if (!_bfd_elf_create_got_section (dynobj, info)) 3608 return FALSE; 3609 break; 3610 3611 default: 3612 break; 3613 } 3614 } 3615 3616 switch (r_type) 3617 { 3618 case R_M32R_GOT16_HI_ULO: 3619 case R_M32R_GOT16_HI_SLO: 3620 case R_M32R_GOT16_LO: 3621 case R_M32R_GOT24: 3622 3623 if (h != NULL) 3624 h->got.refcount += 1; 3625 else 3626 { 3627 bfd_signed_vma *local_got_refcounts; 3628 3629 /* This is a global offset table entry for a local 3630 symbol. */ 3631 local_got_refcounts = elf_local_got_refcounts (abfd); 3632 if (local_got_refcounts == NULL) 3633 { 3634 bfd_size_type size; 3635 3636 size = symtab_hdr->sh_info; 3637 size *= sizeof (bfd_signed_vma); 3638 local_got_refcounts = bfd_zalloc (abfd, size); 3639 if (local_got_refcounts == NULL) 3640 return FALSE; 3641 elf_local_got_refcounts (abfd) = local_got_refcounts; 3642 } 3643 local_got_refcounts[r_symndx] += 1; 3644 } 3645 break; 3646 3647 case R_M32R_26_PLTREL: 3648 /* This symbol requires a procedure linkage table entry. We 3649 actually build the entry in adjust_dynamic_symbol, 3650 because this might be a case of linking PIC code without 3651 linking in any dynamic objects, in which case we don't 3652 need to generate a procedure linkage table after all. */ 3653 3654 /* If this is a local symbol, we resolve it directly without 3655 creating a procedure linkage table entry. */ 3656 if (h == NULL) 3657 continue; 3658 3659 if (h->forced_local) 3660 break; 3661 3662 h->needs_plt = 1; 3663 h->plt.refcount += 1; 3664 break; 3665 3666 case R_M32R_16_RELA: 3667 case R_M32R_24_RELA: 3668 case R_M32R_32_RELA: 3669 case R_M32R_REL32: 3670 case R_M32R_HI16_ULO_RELA: 3671 case R_M32R_HI16_SLO_RELA: 3672 case R_M32R_LO16_RELA: 3673 case R_M32R_SDA16_RELA: 3674 case R_M32R_10_PCREL_RELA: 3675 case R_M32R_18_PCREL_RELA: 3676 case R_M32R_26_PCREL_RELA: 3677 3678 if (h != NULL && !bfd_link_pic (info)) 3679 { 3680 h->non_got_ref = 1; 3681 h->plt.refcount += 1; 3682 } 3683 3684 /* If we are creating a shared library, and this is a reloc 3685 against a global symbol, or a non PC relative reloc 3686 against a local symbol, then we need to copy the reloc 3687 into the shared library. However, if we are linking with 3688 -Bsymbolic, we do not need to copy a reloc against a 3689 global symbol which is defined in an object we are 3690 including in the link (i.e., DEF_REGULAR is set). At 3691 this point we have not seen all the input files, so it is 3692 possible that DEF_REGULAR is not set now but will be set 3693 later (it is never cleared). We account for that 3694 possibility below by storing information in the 3695 dyn_relocs field of the hash table entry. A similar 3696 situation occurs when creating shared libraries and symbol 3697 visibility changes render the symbol local. 3698 3699 If on the other hand, we are creating an executable, we 3700 may need to keep relocations for symbols satisfied by a 3701 dynamic library if we manage to avoid copy relocs for the 3702 symbol. */ 3703 if ((bfd_link_pic (info) 3704 && (sec->flags & SEC_ALLOC) != 0 3705 && (( r_type != R_M32R_26_PCREL_RELA 3706 && r_type != R_M32R_18_PCREL_RELA 3707 && r_type != R_M32R_10_PCREL_RELA 3708 && r_type != R_M32R_REL32) 3709 || (h != NULL 3710 && (! info->symbolic 3711 || h->root.type == bfd_link_hash_defweak 3712 || !h->def_regular)))) 3713 || (!bfd_link_pic (info) 3714 && (sec->flags & SEC_ALLOC) != 0 3715 && h != NULL 3716 && (h->root.type == bfd_link_hash_defweak 3717 || !h->def_regular))) 3718 { 3719 struct elf_dyn_relocs *p; 3720 struct elf_dyn_relocs **head; 3721 3722 if (dynobj == NULL) 3723 htab->root.dynobj = dynobj = abfd; 3724 3725 /* When creating a shared object, we must copy these 3726 relocs into the output file. We create a reloc 3727 section in dynobj and make room for the reloc. */ 3728 if (sreloc == NULL) 3729 { 3730 sreloc = _bfd_elf_make_dynamic_reloc_section 3731 (sec, dynobj, 2, abfd, /*rela?*/ TRUE); 3732 3733 if (sreloc == NULL) 3734 return FALSE; 3735 } 3736 3737 /* If this is a global symbol, we count the number of 3738 relocations we need for this symbol. */ 3739 if (h != NULL) 3740 head = &((struct elf_m32r_link_hash_entry *) h)->dyn_relocs; 3741 else 3742 { 3743 /* Track dynamic relocs needed for local syms too. */ 3744 asection *s; 3745 void *vpp; 3746 Elf_Internal_Sym *isym; 3747 3748 isym = bfd_sym_from_r_symndx (&htab->sym_cache, 3749 abfd, r_symndx); 3750 if (isym == NULL) 3751 return FALSE; 3752 3753 s = bfd_section_from_elf_index (abfd, isym->st_shndx); 3754 if (s == NULL) 3755 s = sec; 3756 3757 vpp = &elf_section_data (s)->local_dynrel; 3758 head = (struct elf_dyn_relocs **) vpp; 3759 } 3760 3761 p = *head; 3762 if (p == NULL || p->sec != sec) 3763 { 3764 bfd_size_type amt = sizeof (*p); 3765 3766 p = bfd_alloc (dynobj, amt); 3767 if (p == NULL) 3768 return FALSE; 3769 p->next = *head; 3770 *head = p; 3771 p->sec = sec; 3772 p->count = 0; 3773 p->pc_count = 0; 3774 } 3775 3776 p->count += 1; 3777 if ( ELF32_R_TYPE (rel->r_info) == R_M32R_26_PCREL_RELA 3778 || ELF32_R_TYPE (rel->r_info) == R_M32R_18_PCREL_RELA 3779 || ELF32_R_TYPE (rel->r_info) == R_M32R_10_PCREL_RELA 3780 || ELF32_R_TYPE (rel->r_info) == R_M32R_REL32) 3781 p->pc_count += 1; 3782 } 3783 break; 3784 3785 /* This relocation describes the C++ object vtable hierarchy. 3786 Reconstruct it for later use during GC. */ 3787 case R_M32R_RELA_GNU_VTINHERIT: 3788 case R_M32R_GNU_VTINHERIT: 3789 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset)) 3790 return FALSE; 3791 break; 3792 3793 /* This relocation describes which C++ vtable entries are actually 3794 used. Record for later use during GC. */ 3795 case R_M32R_GNU_VTENTRY: 3796 BFD_ASSERT (h != NULL); 3797 if (h != NULL 3798 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_offset)) 3799 return FALSE; 3800 break; 3801 case R_M32R_RELA_GNU_VTENTRY: 3802 BFD_ASSERT (h != NULL); 3803 if (h != NULL 3804 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend)) 3805 return FALSE; 3806 break; 3807 } 3808 } 3809 3810 return TRUE; 3811 } 3812 3813 static const struct bfd_elf_special_section m32r_elf_special_sections[] = 3814 { 3815 { STRING_COMMA_LEN (".sbss"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE }, 3816 { STRING_COMMA_LEN (".sdata"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, 3817 { NULL, 0, 0, 0, 0 } 3818 }; 3819 3820 static enum elf_reloc_type_class 3821 m32r_elf_reloc_type_class (const struct bfd_link_info *info ATTRIBUTE_UNUSED, 3822 const asection *rel_sec ATTRIBUTE_UNUSED, 3823 const Elf_Internal_Rela *rela) 3824 { 3825 switch ((int) ELF32_R_TYPE (rela->r_info)) 3826 { 3827 case R_M32R_RELATIVE: return reloc_class_relative; 3828 case R_M32R_JMP_SLOT: return reloc_class_plt; 3829 case R_M32R_COPY: return reloc_class_copy; 3830 default: return reloc_class_normal; 3831 } 3832 } 3833 3834 #define ELF_ARCH bfd_arch_m32r 3835 #define ELF_TARGET_ID M32R_ELF_DATA 3836 #define ELF_MACHINE_CODE EM_M32R 3837 #define ELF_MACHINE_ALT1 EM_CYGNUS_M32R 3838 #define ELF_MAXPAGESIZE 0x1 /* Explicitly requested by Mitsubishi. */ 3839 3840 #define TARGET_BIG_SYM m32r_elf32_vec 3841 #define TARGET_BIG_NAME "elf32-m32r" 3842 #define TARGET_LITTLE_SYM m32r_elf32_le_vec 3843 #define TARGET_LITTLE_NAME "elf32-m32rle" 3844 3845 #define elf_info_to_howto m32r_info_to_howto 3846 #define elf_info_to_howto_rel m32r_info_to_howto_rel 3847 #define elf_backend_section_from_bfd_section _bfd_m32r_elf_section_from_bfd_section 3848 #define elf_backend_symbol_processing _bfd_m32r_elf_symbol_processing 3849 #define elf_backend_add_symbol_hook m32r_elf_add_symbol_hook 3850 #define elf_backend_relocate_section m32r_elf_relocate_section 3851 #define elf_backend_gc_mark_hook m32r_elf_gc_mark_hook 3852 #define elf_backend_check_relocs m32r_elf_check_relocs 3853 3854 #define elf_backend_create_dynamic_sections m32r_elf_create_dynamic_sections 3855 #define bfd_elf32_bfd_link_hash_table_create m32r_elf_link_hash_table_create 3856 #define elf_backend_size_dynamic_sections m32r_elf_size_dynamic_sections 3857 #define elf_backend_omit_section_dynsym \ 3858 ((bfd_boolean (*) (bfd *, struct bfd_link_info *, asection *)) bfd_true) 3859 #define elf_backend_finish_dynamic_sections m32r_elf_finish_dynamic_sections 3860 #define elf_backend_adjust_dynamic_symbol m32r_elf_adjust_dynamic_symbol 3861 #define elf_backend_finish_dynamic_symbol m32r_elf_finish_dynamic_symbol 3862 #define elf_backend_reloc_type_class m32r_elf_reloc_type_class 3863 #define elf_backend_copy_indirect_symbol m32r_elf_copy_indirect_symbol 3864 3865 #define elf_backend_can_gc_sections 1 3866 /*#if !USE_REL 3867 #define elf_backend_rela_normal 1 3868 #endif*/ 3869 #define elf_backend_can_refcount 1 3870 #define elf_backend_want_got_plt 1 3871 #define elf_backend_plt_readonly 1 3872 #define elf_backend_want_plt_sym 0 3873 #define elf_backend_got_header_size 12 3874 #define elf_backend_dtrel_excludes_plt 1 3875 3876 #define elf_backend_may_use_rel_p 1 3877 #ifdef USE_M32R_OLD_RELOC 3878 #define elf_backend_default_use_rela_p 0 3879 #define elf_backend_may_use_rela_p 0 3880 #else 3881 #define elf_backend_default_use_rela_p 1 3882 #define elf_backend_may_use_rela_p 1 3883 #endif 3884 3885 #define elf_backend_object_p m32r_elf_object_p 3886 #define elf_backend_final_write_processing m32r_elf_final_write_processing 3887 #define bfd_elf32_bfd_merge_private_bfd_data m32r_elf_merge_private_bfd_data 3888 #define bfd_elf32_bfd_set_private_flags m32r_elf_set_private_flags 3889 #define bfd_elf32_bfd_print_private_bfd_data m32r_elf_print_private_bfd_data 3890 #define elf_backend_special_sections m32r_elf_special_sections 3891 3892 #define elf_backend_linux_prpsinfo32_ugid16 TRUE 3893 3894 #include "elf32-target.h" 3895 3896 #undef ELF_MAXPAGESIZE 3897 #define ELF_MAXPAGESIZE 0x1000 3898 3899 #undef TARGET_BIG_SYM 3900 #define TARGET_BIG_SYM m32r_elf32_linux_vec 3901 #undef TARGET_BIG_NAME 3902 #define TARGET_BIG_NAME "elf32-m32r-linux" 3903 #undef TARGET_LITTLE_SYM 3904 #define TARGET_LITTLE_SYM m32r_elf32_linux_le_vec 3905 #undef TARGET_LITTLE_NAME 3906 #define TARGET_LITTLE_NAME "elf32-m32rle-linux" 3907 #undef elf32_bed 3908 #define elf32_bed elf32_m32r_lin_bed 3909 3910 #include "elf32-target.h" 3911