1 /* M32R-specific support for 32-bit ELF. 2 Copyright (C) 1996-2020 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 bfd_boolean 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 (_("%pB: unsupported relocation type %#x"), 1287 abfd, r_type); 1288 bfd_set_error (bfd_error_bad_value); 1289 return FALSE; 1290 } 1291 cache_ptr->howto = &m32r_elf_howto_table[r_type]; 1292 return TRUE; 1293 } 1294 1295 static bfd_boolean 1296 m32r_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED, 1297 arelent *cache_ptr, 1298 Elf_Internal_Rela *dst) 1299 { 1300 unsigned int r_type = ELF32_R_TYPE (dst->r_info); 1301 1302 if (r_type == (unsigned int) R_M32R_NONE 1303 || ((r_type > (unsigned int) R_M32R_GNU_VTENTRY) 1304 && (r_type < (unsigned int) R_M32R_max))) 1305 { 1306 cache_ptr->howto = &m32r_elf_howto_table[r_type]; 1307 return TRUE; 1308 } 1309 1310 /* xgettext:c-format */ 1311 _bfd_error_handler (_("%pB: unsupported relocation type %#x"), abfd, r_type); 1312 bfd_set_error (bfd_error_bad_value); 1313 return FALSE; 1314 } 1315 1316 1317 /* Given a BFD section, try to locate the corresponding ELF section 1318 index. */ 1319 1320 static bfd_boolean 1321 _bfd_m32r_elf_section_from_bfd_section (bfd *abfd ATTRIBUTE_UNUSED, 1322 asection *sec, 1323 int *retval) 1324 { 1325 if (strcmp (bfd_section_name (sec), ".scommon") == 0) 1326 { 1327 *retval = SHN_M32R_SCOMMON; 1328 return TRUE; 1329 } 1330 return FALSE; 1331 } 1332 1333 /* M32R ELF uses two common sections. One is the usual one, and the other 1334 is for small objects. All the small objects are kept together, and then 1335 referenced via one register, which yields faster assembler code. It is 1336 up to the compiler to emit an instruction to load the register with 1337 _SDA_BASE. This is what we use for the small common section. This 1338 approach is copied from elf32-mips.c. */ 1339 static asection m32r_elf_scom_section; 1340 static asymbol m32r_elf_scom_symbol; 1341 static asymbol *m32r_elf_scom_symbol_ptr; 1342 1343 /* Handle the special M32R section numbers that a symbol may use. */ 1344 1345 static void 1346 _bfd_m32r_elf_symbol_processing (bfd *abfd ATTRIBUTE_UNUSED, asymbol *asym) 1347 { 1348 elf_symbol_type *elfsym = (elf_symbol_type *) asym; 1349 1350 switch (elfsym->internal_elf_sym.st_shndx) 1351 { 1352 case SHN_M32R_SCOMMON: 1353 if (m32r_elf_scom_section.name == NULL) 1354 { 1355 /* Initialize the small common section. */ 1356 m32r_elf_scom_section.name = ".scommon"; 1357 m32r_elf_scom_section.flags = SEC_IS_COMMON; 1358 m32r_elf_scom_section.output_section = &m32r_elf_scom_section; 1359 m32r_elf_scom_section.symbol = &m32r_elf_scom_symbol; 1360 m32r_elf_scom_section.symbol_ptr_ptr = &m32r_elf_scom_symbol_ptr; 1361 m32r_elf_scom_symbol.name = ".scommon"; 1362 m32r_elf_scom_symbol.flags = BSF_SECTION_SYM; 1363 m32r_elf_scom_symbol.section = &m32r_elf_scom_section; 1364 m32r_elf_scom_symbol_ptr = &m32r_elf_scom_symbol; 1365 } 1366 asym->section = &m32r_elf_scom_section; 1367 asym->value = elfsym->internal_elf_sym.st_size; 1368 break; 1369 } 1370 } 1371 1372 /* Hook called by the linker routine which adds symbols from an object 1373 file. We must handle the special M32R section numbers here. 1374 We also keep watching for whether we need to create the sdata special 1375 linker sections. */ 1376 1377 static bfd_boolean 1378 m32r_elf_add_symbol_hook (bfd *abfd, 1379 struct bfd_link_info *info, 1380 Elf_Internal_Sym *sym, 1381 const char **namep, 1382 flagword *flagsp ATTRIBUTE_UNUSED, 1383 asection **secp, 1384 bfd_vma *valp) 1385 { 1386 if (! bfd_link_relocatable (info) 1387 && (*namep)[0] == '_' && (*namep)[1] == 'S' 1388 && strcmp (*namep, "_SDA_BASE_") == 0 1389 && is_elf_hash_table (info->hash)) 1390 { 1391 /* This is simpler than using _bfd_elf_create_linker_section 1392 (our needs are simpler than ppc's needs). Also 1393 _bfd_elf_create_linker_section currently has a bug where if a .sdata 1394 section already exists a new one is created that follows it which 1395 screws of _SDA_BASE_ address calcs because output_offset != 0. */ 1396 struct elf_link_hash_entry *h; 1397 struct bfd_link_hash_entry *bh; 1398 asection *s = bfd_get_section_by_name (abfd, ".sdata"); 1399 1400 /* The following code was cobbled from elf32-ppc.c and elflink.c. */ 1401 if (s == NULL) 1402 { 1403 flagword flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS 1404 | SEC_IN_MEMORY | SEC_LINKER_CREATED); 1405 1406 s = bfd_make_section_anyway_with_flags (abfd, ".sdata", 1407 flags); 1408 if (s == NULL) 1409 return FALSE; 1410 if (!bfd_set_section_alignment (s, 2)) 1411 return FALSE; 1412 } 1413 1414 bh = bfd_link_hash_lookup (info->hash, "_SDA_BASE_", 1415 FALSE, FALSE, FALSE); 1416 1417 if ((bh == NULL || bh->type == bfd_link_hash_undefined) 1418 && !(_bfd_generic_link_add_one_symbol (info, 1419 abfd, 1420 "_SDA_BASE_", 1421 BSF_GLOBAL, 1422 s, 1423 (bfd_vma) 32768, 1424 NULL, 1425 FALSE, 1426 get_elf_backend_data (abfd)->collect, 1427 &bh))) 1428 return FALSE; 1429 h = (struct elf_link_hash_entry *) bh; 1430 h->type = STT_OBJECT; 1431 } 1432 1433 switch (sym->st_shndx) 1434 { 1435 case SHN_M32R_SCOMMON: 1436 *secp = bfd_make_section_old_way (abfd, ".scommon"); 1437 (*secp)->flags |= SEC_IS_COMMON; 1438 *valp = sym->st_size; 1439 break; 1440 } 1441 1442 return TRUE; 1443 } 1444 1445 /* We have to figure out the SDA_BASE value, so that we can adjust the 1446 symbol value correctly. We look up the symbol _SDA_BASE_ in the output 1447 BFD. If we can't find it, we're stuck. We cache it in the ELF 1448 target data. We don't need to adjust the symbol value for an 1449 external symbol if we are producing relocatable output. */ 1450 1451 static bfd_reloc_status_type 1452 m32r_elf_final_sda_base (bfd *output_bfd, 1453 struct bfd_link_info *info, 1454 const char **error_message, 1455 bfd_vma *psb) 1456 { 1457 if (elf_gp (output_bfd) == 0) 1458 { 1459 struct bfd_link_hash_entry *h; 1460 1461 h = bfd_link_hash_lookup (info->hash, "_SDA_BASE_", FALSE, FALSE, TRUE); 1462 if (h != NULL && h->type == bfd_link_hash_defined) 1463 elf_gp (output_bfd) = (h->u.def.value 1464 + h->u.def.section->output_section->vma 1465 + h->u.def.section->output_offset); 1466 else 1467 { 1468 /* Only get the error once. */ 1469 *psb = elf_gp (output_bfd) = 4; 1470 *error_message = 1471 (const char *) _("SDA relocation when _SDA_BASE_ not defined"); 1472 return bfd_reloc_dangerous; 1473 } 1474 } 1475 *psb = elf_gp (output_bfd); 1476 return bfd_reloc_ok; 1477 } 1478 1479 /* Return size of a PLT entry. */ 1480 #define elf_m32r_sizeof_plt(info) PLT_ENTRY_SIZE 1481 1482 /* The m32r linker needs to keep track of the number of relocs that it 1483 decides to copy in check_relocs for each symbol. This is so that 1484 it can discard PC relative relocs if it doesn't need them when 1485 linking with -Bsymbolic. We store the information in a field 1486 extending the regular ELF linker hash table. */ 1487 1488 /* This structure keeps track of the number of PC relative relocs we 1489 have copied for a given symbol. */ 1490 1491 struct elf_m32r_pcrel_relocs_copied 1492 { 1493 /* Next section. */ 1494 struct elf_m32r_pcrel_relocs_copied *next; 1495 /* A section in dynobj. */ 1496 asection *section; 1497 /* Number of relocs copied in this section. */ 1498 bfd_size_type count; 1499 }; 1500 1501 /* m32r ELF linker hash entry. */ 1502 1503 struct elf_m32r_link_hash_entry 1504 { 1505 struct elf_link_hash_entry root; 1506 1507 /* Track dynamic relocs copied for this symbol. */ 1508 struct elf_dyn_relocs *dyn_relocs; 1509 }; 1510 1511 /* m32r ELF linker hash table. */ 1512 1513 struct elf_m32r_link_hash_table 1514 { 1515 struct elf_link_hash_table root; 1516 1517 /* Short-cuts to get to dynamic linker sections. */ 1518 asection *sdynbss; 1519 asection *srelbss; 1520 1521 /* Small local sym cache. */ 1522 struct sym_cache sym_cache; 1523 }; 1524 1525 /* Traverse an m32r ELF linker hash table. */ 1526 1527 #define m32r_elf_link_hash_traverse(table, func, info) \ 1528 (elf_link_hash_traverse \ 1529 (&(table)->root, \ 1530 (bfd_boolean (*) (struct elf_link_hash_entry *, void *)) (func), \ 1531 (info))) 1532 1533 /* Get the m32r ELF linker hash table from a link_info structure. */ 1534 1535 #define m32r_elf_hash_table(p) \ 1536 (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \ 1537 == M32R_ELF_DATA ? ((struct elf_m32r_link_hash_table *) ((p)->hash)) : NULL) 1538 1539 /* Create an entry in an m32r ELF linker hash table. */ 1540 1541 static struct bfd_hash_entry * 1542 m32r_elf_link_hash_newfunc (struct bfd_hash_entry *entry, 1543 struct bfd_hash_table *table, 1544 const char *string) 1545 { 1546 struct elf_m32r_link_hash_entry *ret = 1547 (struct elf_m32r_link_hash_entry *) entry; 1548 1549 /* Allocate the structure if it has not already been allocated by a 1550 subclass. */ 1551 if (ret == NULL) 1552 ret = bfd_hash_allocate (table, 1553 sizeof (struct elf_m32r_link_hash_entry)); 1554 if (ret == NULL) 1555 return NULL; 1556 1557 /* Call the allocation method of the superclass. */ 1558 ret = ((struct elf_m32r_link_hash_entry *) 1559 _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret, 1560 table, string)); 1561 if (ret != NULL) 1562 { 1563 struct elf_m32r_link_hash_entry *eh; 1564 1565 eh = (struct elf_m32r_link_hash_entry *) ret; 1566 eh->dyn_relocs = NULL; 1567 } 1568 1569 return (struct bfd_hash_entry *) ret; 1570 } 1571 1572 /* Create an m32r ELF linker hash table. */ 1573 1574 static struct bfd_link_hash_table * 1575 m32r_elf_link_hash_table_create (bfd *abfd) 1576 { 1577 struct elf_m32r_link_hash_table *ret; 1578 bfd_size_type amt = sizeof (struct elf_m32r_link_hash_table); 1579 1580 ret = bfd_zmalloc (amt); 1581 if (ret == NULL) 1582 return NULL; 1583 1584 if (!_bfd_elf_link_hash_table_init (&ret->root, abfd, 1585 m32r_elf_link_hash_newfunc, 1586 sizeof (struct elf_m32r_link_hash_entry), 1587 M32R_ELF_DATA)) 1588 { 1589 free (ret); 1590 return NULL; 1591 } 1592 1593 return &ret->root.root; 1594 } 1595 1596 /* Create dynamic sections when linking against a dynamic object. */ 1597 1598 static bfd_boolean 1599 m32r_elf_create_dynamic_sections (bfd *abfd, struct bfd_link_info *info) 1600 { 1601 struct elf_m32r_link_hash_table *htab; 1602 flagword flags, pltflags; 1603 asection *s; 1604 const struct elf_backend_data *bed = get_elf_backend_data (abfd); 1605 int ptralign = 2; /* 32bit */ 1606 1607 htab = m32r_elf_hash_table (info); 1608 if (htab == NULL) 1609 return FALSE; 1610 1611 /* We need to create .plt, .rel[a].plt, .got, .got.plt, .dynbss, and 1612 .rel[a].bss sections. */ 1613 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY 1614 | SEC_LINKER_CREATED); 1615 1616 pltflags = flags; 1617 pltflags |= SEC_CODE; 1618 if (bed->plt_not_loaded) 1619 pltflags &= ~ (SEC_LOAD | SEC_HAS_CONTENTS); 1620 if (bed->plt_readonly) 1621 pltflags |= SEC_READONLY; 1622 1623 s = bfd_make_section_anyway_with_flags (abfd, ".plt", pltflags); 1624 htab->root.splt = s; 1625 if (s == NULL 1626 || !bfd_set_section_alignment (s, bed->plt_alignment)) 1627 return FALSE; 1628 1629 if (bed->want_plt_sym) 1630 { 1631 /* Define the symbol _PROCEDURE_LINKAGE_TABLE_ at the start of the 1632 .plt section. */ 1633 struct bfd_link_hash_entry *bh = NULL; 1634 struct elf_link_hash_entry *h; 1635 1636 if (! (_bfd_generic_link_add_one_symbol 1637 (info, abfd, "_PROCEDURE_LINKAGE_TABLE_", BSF_GLOBAL, s, 1638 (bfd_vma) 0, NULL, FALSE, 1639 get_elf_backend_data (abfd)->collect, &bh))) 1640 return FALSE; 1641 h = (struct elf_link_hash_entry *) bh; 1642 h->def_regular = 1; 1643 h->type = STT_OBJECT; 1644 htab->root.hplt = h; 1645 1646 if (bfd_link_pic (info) 1647 && ! bfd_elf_link_record_dynamic_symbol (info, h)) 1648 return FALSE; 1649 } 1650 1651 s = bfd_make_section_anyway_with_flags (abfd, 1652 bed->default_use_rela_p 1653 ? ".rela.plt" : ".rel.plt", 1654 flags | SEC_READONLY); 1655 htab->root.srelplt = s; 1656 if (s == NULL 1657 || !bfd_set_section_alignment (s, ptralign)) 1658 return FALSE; 1659 1660 if (htab->root.sgot == NULL 1661 && !_bfd_elf_create_got_section (abfd, info)) 1662 return FALSE; 1663 1664 if (bed->want_dynbss) 1665 { 1666 /* The .dynbss section is a place to put symbols which are defined 1667 by dynamic objects, are referenced by regular objects, and are 1668 not functions. We must allocate space for them in the process 1669 image and use a R_*_COPY reloc to tell the dynamic linker to 1670 initialize them at run time. The linker script puts the .dynbss 1671 section into the .bss section of the final image. */ 1672 s = bfd_make_section_anyway_with_flags (abfd, ".dynbss", 1673 SEC_ALLOC | SEC_LINKER_CREATED); 1674 htab->sdynbss = s; 1675 if (s == NULL) 1676 return FALSE; 1677 /* The .rel[a].bss section holds copy relocs. This section is not 1678 normally needed. We need to create it here, though, so that the 1679 linker will map it to an output section. We can't just create it 1680 only if we need it, because we will not know whether we need it 1681 until we have seen all the input files, and the first time the 1682 main linker code calls BFD after examining all the input files 1683 (size_dynamic_sections) the input sections have already been 1684 mapped to the output sections. If the section turns out not to 1685 be needed, we can discard it later. We will never need this 1686 section when generating a shared object, since they do not use 1687 copy relocs. */ 1688 if (! bfd_link_pic (info)) 1689 { 1690 s = bfd_make_section_anyway_with_flags (abfd, 1691 (bed->default_use_rela_p 1692 ? ".rela.bss" : ".rel.bss"), 1693 flags | SEC_READONLY); 1694 htab->srelbss = s; 1695 if (s == NULL 1696 || !bfd_set_section_alignment (s, ptralign)) 1697 return FALSE; 1698 } 1699 } 1700 1701 return TRUE; 1702 } 1703 1704 /* Copy the extra info we tack onto an elf_link_hash_entry. */ 1705 1706 static void 1707 m32r_elf_copy_indirect_symbol (struct bfd_link_info *info, 1708 struct elf_link_hash_entry *dir, 1709 struct elf_link_hash_entry *ind) 1710 { 1711 struct elf_m32r_link_hash_entry * edir; 1712 struct elf_m32r_link_hash_entry * eind; 1713 1714 edir = (struct elf_m32r_link_hash_entry *) dir; 1715 eind = (struct elf_m32r_link_hash_entry *) ind; 1716 1717 if (eind->dyn_relocs != NULL) 1718 { 1719 if (edir->dyn_relocs != NULL) 1720 { 1721 struct elf_dyn_relocs **pp; 1722 struct elf_dyn_relocs *p; 1723 1724 /* Add reloc counts against the indirect sym to the direct sym 1725 list. Merge any entries against the same section. */ 1726 for (pp = &eind->dyn_relocs; (p = *pp) != NULL;) 1727 { 1728 struct elf_dyn_relocs *q; 1729 1730 for (q = edir->dyn_relocs; q != NULL; q = q->next) 1731 if (q->sec == p->sec) 1732 { 1733 q->pc_count += p->pc_count; 1734 q->count += p->count; 1735 *pp = p->next; 1736 break; 1737 } 1738 if (q == NULL) 1739 pp = &p->next; 1740 } 1741 *pp = edir->dyn_relocs; 1742 } 1743 1744 edir->dyn_relocs = eind->dyn_relocs; 1745 eind->dyn_relocs = NULL; 1746 } 1747 1748 _bfd_elf_link_hash_copy_indirect (info, dir, ind); 1749 } 1750 1751 1752 /* Find dynamic relocs for H that apply to read-only sections. */ 1753 1754 static asection * 1755 readonly_dynrelocs (struct elf_link_hash_entry *h) 1756 { 1757 struct elf_dyn_relocs *p; 1758 struct elf_m32r_link_hash_entry *eh = (struct elf_m32r_link_hash_entry *) h; 1759 1760 for (p = eh->dyn_relocs; p != NULL; p = p->next) 1761 { 1762 asection *s = p->sec->output_section; 1763 1764 if (s != NULL && (s->flags & SEC_READONLY) != 0) 1765 return p->sec; 1766 } 1767 return NULL; 1768 } 1769 1770 /* Adjust a symbol defined by a dynamic object and referenced by a 1771 regular object. The current definition is in some section of the 1772 dynamic object, but we're not including those sections. We have to 1773 change the definition to something the rest of the link can 1774 understand. */ 1775 1776 static bfd_boolean 1777 m32r_elf_adjust_dynamic_symbol (struct bfd_link_info *info, 1778 struct elf_link_hash_entry *h) 1779 { 1780 struct elf_m32r_link_hash_table *htab; 1781 bfd *dynobj; 1782 asection *s; 1783 1784 #ifdef DEBUG_PIC 1785 printf ("m32r_elf_adjust_dynamic_symbol()\n"); 1786 #endif 1787 1788 dynobj = elf_hash_table (info)->dynobj; 1789 1790 /* Make sure we know what is going on here. */ 1791 BFD_ASSERT (dynobj != NULL 1792 && (h->needs_plt 1793 || h->is_weakalias 1794 || (h->def_dynamic 1795 && h->ref_regular 1796 && !h->def_regular))); 1797 1798 /* If this is a function, put it in the procedure linkage table. We 1799 will fill in the contents of the procedure linkage table later, 1800 when we know the address of the .got section. */ 1801 if (h->type == STT_FUNC 1802 || h->needs_plt) 1803 { 1804 if (! bfd_link_pic (info) 1805 && !h->def_dynamic 1806 && !h->ref_dynamic 1807 && h->root.type != bfd_link_hash_undefweak 1808 && h->root.type != bfd_link_hash_undefined) 1809 { 1810 /* This case can occur if we saw a PLT reloc in an input 1811 file, but the symbol was never referred to by a dynamic 1812 object. In such a case, we don't actually need to build 1813 a procedure linkage table, and we can just do a PCREL 1814 reloc instead. */ 1815 h->plt.offset = (bfd_vma) -1; 1816 h->needs_plt = 0; 1817 } 1818 1819 return TRUE; 1820 } 1821 else 1822 h->plt.offset = (bfd_vma) -1; 1823 1824 /* If this is a weak symbol, and there is a real definition, the 1825 processor independent code will have arranged for us to see the 1826 real definition first, and we can just use the same value. */ 1827 if (h->is_weakalias) 1828 { 1829 struct elf_link_hash_entry *def = weakdef (h); 1830 BFD_ASSERT (def->root.type == bfd_link_hash_defined); 1831 h->root.u.def.section = def->root.u.def.section; 1832 h->root.u.def.value = def->root.u.def.value; 1833 return TRUE; 1834 } 1835 1836 /* This is a reference to a symbol defined by a dynamic object which 1837 is not a function. */ 1838 1839 /* If we are creating a shared library, we must presume that the 1840 only references to the symbol are via the global offset table. 1841 For such cases we need not do anything here; the relocations will 1842 be handled correctly by relocate_section. */ 1843 if (bfd_link_pic (info)) 1844 return TRUE; 1845 1846 /* If there are no references to this symbol that do not use the 1847 GOT, we don't need to generate a copy reloc. */ 1848 if (!h->non_got_ref) 1849 return TRUE; 1850 1851 /* If -z nocopyreloc was given, we won't generate them either. */ 1852 if (0 && info->nocopyreloc) 1853 { 1854 h->non_got_ref = 0; 1855 return TRUE; 1856 } 1857 1858 /* If we don't find any dynamic relocs in read-only sections, then 1859 we'll be keeping the dynamic relocs and avoiding the copy reloc. */ 1860 if (0 && !readonly_dynrelocs (h)) 1861 { 1862 h->non_got_ref = 0; 1863 return TRUE; 1864 } 1865 1866 /* We must allocate the symbol in our .dynbss section, which will 1867 become part of the .bss section of the executable. There will be 1868 an entry for this symbol in the .dynsym section. The dynamic 1869 object will contain position independent code, so all references 1870 from the dynamic object to this symbol will go through the global 1871 offset table. The dynamic linker will use the .dynsym entry to 1872 determine the address it must put in the global offset table, so 1873 both the dynamic object and the regular object will refer to the 1874 same memory location for the variable. */ 1875 1876 htab = m32r_elf_hash_table (info); 1877 if (htab == NULL) 1878 return FALSE; 1879 1880 s = htab->sdynbss; 1881 BFD_ASSERT (s != NULL); 1882 1883 /* We must generate a R_M32R_COPY reloc to tell the dynamic linker 1884 to copy the initial value out of the dynamic object and into the 1885 runtime process image. We need to remember the offset into the 1886 .rela.bss section we are going to use. */ 1887 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0) 1888 { 1889 asection *srel; 1890 1891 srel = htab->srelbss; 1892 BFD_ASSERT (srel != NULL); 1893 srel->size += sizeof (Elf32_External_Rela); 1894 h->needs_copy = 1; 1895 } 1896 1897 return _bfd_elf_adjust_dynamic_copy (info, h, s); 1898 } 1899 1900 /* Allocate space in .plt, .got and associated reloc sections for 1901 dynamic relocs. */ 1902 1903 static bfd_boolean 1904 allocate_dynrelocs (struct elf_link_hash_entry *h, void * inf) 1905 { 1906 struct bfd_link_info *info; 1907 struct elf_m32r_link_hash_table *htab; 1908 struct elf_m32r_link_hash_entry *eh; 1909 struct elf_dyn_relocs *p; 1910 1911 if (h->root.type == bfd_link_hash_indirect) 1912 return TRUE; 1913 1914 info = (struct bfd_link_info *) inf; 1915 htab = m32r_elf_hash_table (info); 1916 if (htab == NULL) 1917 return FALSE; 1918 1919 eh = (struct elf_m32r_link_hash_entry *) h; 1920 1921 if (htab->root.dynamic_sections_created 1922 && h->plt.refcount > 0) 1923 { 1924 /* Make sure this symbol is output as a dynamic symbol. 1925 Undefined weak syms won't yet be marked as dynamic. */ 1926 if (h->dynindx == -1 1927 && !h->forced_local) 1928 { 1929 if (! bfd_elf_link_record_dynamic_symbol (info, h)) 1930 return FALSE; 1931 } 1932 1933 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, bfd_link_pic (info), h)) 1934 { 1935 asection *s = htab->root.splt; 1936 1937 /* If this is the first .plt entry, make room for the special 1938 first entry. */ 1939 if (s->size == 0) 1940 s->size += PLT_ENTRY_SIZE; 1941 1942 h->plt.offset = s->size; 1943 1944 /* If this symbol is not defined in a regular file, and we are 1945 not generating a shared library, then set the symbol to this 1946 location in the .plt. This is required to make function 1947 pointers compare as equal between the normal executable and 1948 the shared library. */ 1949 if (! bfd_link_pic (info) 1950 && !h->def_regular) 1951 { 1952 h->root.u.def.section = s; 1953 h->root.u.def.value = h->plt.offset; 1954 } 1955 1956 /* Make room for this entry. */ 1957 s->size += PLT_ENTRY_SIZE; 1958 1959 /* We also need to make an entry in the .got.plt section, which 1960 will be placed in the .got section by the linker script. */ 1961 htab->root.sgotplt->size += 4; 1962 1963 /* We also need to make an entry in the .rel.plt section. */ 1964 htab->root.srelplt->size += sizeof (Elf32_External_Rela); 1965 } 1966 else 1967 { 1968 h->plt.offset = (bfd_vma) -1; 1969 h->needs_plt = 0; 1970 } 1971 } 1972 else 1973 { 1974 h->plt.offset = (bfd_vma) -1; 1975 h->needs_plt = 0; 1976 } 1977 1978 if (h->got.refcount > 0) 1979 { 1980 asection *s; 1981 bfd_boolean dyn; 1982 1983 /* Make sure this symbol is output as a dynamic symbol. 1984 Undefined weak syms won't yet be marked as dynamic. */ 1985 if (h->dynindx == -1 1986 && !h->forced_local) 1987 { 1988 if (! bfd_elf_link_record_dynamic_symbol (info, h)) 1989 return FALSE; 1990 } 1991 1992 s = htab->root.sgot; 1993 1994 h->got.offset = s->size; 1995 s->size += 4; 1996 dyn = htab->root.dynamic_sections_created; 1997 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, bfd_link_pic (info), h)) 1998 htab->root.srelgot->size += sizeof (Elf32_External_Rela); 1999 } 2000 else 2001 h->got.offset = (bfd_vma) -1; 2002 2003 if (eh->dyn_relocs == NULL) 2004 return TRUE; 2005 2006 /* In the shared -Bsymbolic case, discard space allocated for 2007 dynamic pc-relative relocs against symbols which turn out to be 2008 defined in regular objects. For the normal shared case, discard 2009 space for pc-relative relocs that have become local due to symbol 2010 visibility changes. */ 2011 2012 if (bfd_link_pic (info)) 2013 { 2014 if (h->def_regular 2015 && (h->forced_local 2016 || info->symbolic)) 2017 { 2018 struct elf_dyn_relocs **pp; 2019 2020 for (pp = &eh->dyn_relocs; (p = *pp) != NULL;) 2021 { 2022 p->count -= p->pc_count; 2023 p->pc_count = 0; 2024 if (p->count == 0) 2025 *pp = p->next; 2026 else 2027 pp = &p->next; 2028 } 2029 } 2030 2031 /* Also discard relocs on undefined weak syms with non-default 2032 visibility. */ 2033 if (eh->dyn_relocs != NULL 2034 && h->root.type == bfd_link_hash_undefweak) 2035 { 2036 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT) 2037 eh->dyn_relocs = NULL; 2038 2039 /* Make sure undefined weak symbols are output as a dynamic 2040 symbol in PIEs. */ 2041 else if (h->dynindx == -1 2042 && !h->forced_local) 2043 { 2044 if (! bfd_elf_link_record_dynamic_symbol (info, h)) 2045 return FALSE; 2046 } 2047 } 2048 } 2049 else 2050 { 2051 /* For the non-shared case, discard space for relocs against 2052 symbols which turn out to need copy relocs or are not 2053 dynamic. */ 2054 2055 if (!h->non_got_ref 2056 && ((h->def_dynamic 2057 && !h->def_regular) 2058 || (htab->root.dynamic_sections_created 2059 && (h->root.type == bfd_link_hash_undefweak 2060 || h->root.type == bfd_link_hash_undefined)))) 2061 { 2062 /* Make sure this symbol is output as a dynamic symbol. 2063 Undefined weak syms won't yet be marked as dynamic. */ 2064 if (h->dynindx == -1 2065 && !h->forced_local) 2066 { 2067 if (! bfd_elf_link_record_dynamic_symbol (info, h)) 2068 return FALSE; 2069 } 2070 2071 /* If that succeeded, we know we'll be keeping all the 2072 relocs. */ 2073 if (h->dynindx != -1) 2074 goto keep; 2075 } 2076 2077 eh->dyn_relocs = NULL; 2078 2079 keep: ; 2080 } 2081 2082 /* Finally, allocate space. */ 2083 for (p = eh->dyn_relocs; p != NULL; p = p->next) 2084 { 2085 asection *sreloc = elf_section_data (p->sec)->sreloc; 2086 sreloc->size += p->count * sizeof (Elf32_External_Rela); 2087 } 2088 2089 return TRUE; 2090 } 2091 2092 /* Set DF_TEXTREL if we find any dynamic relocs that apply to 2093 read-only sections. */ 2094 2095 static bfd_boolean 2096 maybe_set_textrel (struct elf_link_hash_entry *h, void *info_p) 2097 { 2098 asection *sec; 2099 2100 if (h->root.type == bfd_link_hash_indirect) 2101 return TRUE; 2102 2103 sec = readonly_dynrelocs (h); 2104 if (sec != NULL) 2105 { 2106 struct bfd_link_info *info = (struct bfd_link_info *) info_p; 2107 2108 info->flags |= DF_TEXTREL; 2109 info->callbacks->minfo 2110 (_("%pB: dynamic relocation against `%pT' in read-only section `%pA'\n"), 2111 sec->owner, h->root.root.string, sec); 2112 2113 /* Not an error, just cut short the traversal. */ 2114 return FALSE; 2115 } 2116 return TRUE; 2117 } 2118 2119 /* Set the sizes of the dynamic sections. */ 2120 2121 static bfd_boolean 2122 m32r_elf_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED, 2123 struct bfd_link_info *info) 2124 { 2125 struct elf_m32r_link_hash_table *htab; 2126 bfd *dynobj; 2127 asection *s; 2128 bfd_boolean relocs; 2129 bfd *ibfd; 2130 2131 #ifdef DEBUG_PIC 2132 printf ("m32r_elf_size_dynamic_sections()\n"); 2133 #endif 2134 2135 htab = m32r_elf_hash_table (info); 2136 if (htab == NULL) 2137 return FALSE; 2138 2139 dynobj = htab->root.dynobj; 2140 BFD_ASSERT (dynobj != NULL); 2141 2142 if (htab->root.dynamic_sections_created) 2143 { 2144 /* Set the contents of the .interp section to the interpreter. */ 2145 if (bfd_link_executable (info) && !info->nointerp) 2146 { 2147 s = bfd_get_linker_section (dynobj, ".interp"); 2148 BFD_ASSERT (s != NULL); 2149 s->size = sizeof ELF_DYNAMIC_INTERPRETER; 2150 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER; 2151 } 2152 } 2153 2154 /* Set up .got offsets for local syms, and space for local dynamic 2155 relocs. */ 2156 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) 2157 { 2158 bfd_signed_vma *local_got; 2159 bfd_signed_vma *end_local_got; 2160 bfd_size_type locsymcount; 2161 Elf_Internal_Shdr *symtab_hdr; 2162 asection *srel; 2163 2164 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour) 2165 continue; 2166 2167 for (s = ibfd->sections; s != NULL; s = s->next) 2168 { 2169 struct elf_dyn_relocs *p; 2170 2171 for (p = ((struct elf_dyn_relocs *) 2172 elf_section_data (s)->local_dynrel); 2173 p != NULL; 2174 p = p->next) 2175 { 2176 if (! bfd_is_abs_section (p->sec) 2177 && bfd_is_abs_section (p->sec->output_section)) 2178 { 2179 /* Input section has been discarded, either because 2180 it is a copy of a linkonce section or due to 2181 linker script /DISCARD/, so we'll be discarding 2182 the relocs too. */ 2183 } 2184 else if (p->count != 0) 2185 { 2186 srel = elf_section_data (p->sec)->sreloc; 2187 srel->size += p->count * sizeof (Elf32_External_Rela); 2188 if ((p->sec->output_section->flags & SEC_READONLY) != 0) 2189 info->flags |= DF_TEXTREL; 2190 } 2191 } 2192 } 2193 2194 local_got = elf_local_got_refcounts (ibfd); 2195 if (!local_got) 2196 continue; 2197 2198 symtab_hdr = &elf_tdata (ibfd)->symtab_hdr; 2199 locsymcount = symtab_hdr->sh_info; 2200 end_local_got = local_got + locsymcount; 2201 s = htab->root.sgot; 2202 srel = htab->root.srelgot; 2203 for (; local_got < end_local_got; ++local_got) 2204 { 2205 if (*local_got > 0) 2206 { 2207 *local_got = s->size; 2208 s->size += 4; 2209 if (bfd_link_pic (info)) 2210 srel->size += sizeof (Elf32_External_Rela); 2211 } 2212 else 2213 *local_got = (bfd_vma) -1; 2214 } 2215 } 2216 2217 /* Allocate global sym .plt and .got entries, and space for global 2218 sym dynamic relocs. */ 2219 elf_link_hash_traverse (&htab->root, allocate_dynrelocs, info); 2220 2221 /* We now have determined the sizes of the various dynamic sections. 2222 Allocate memory for them. */ 2223 relocs = FALSE; 2224 for (s = dynobj->sections; s != NULL; s = s->next) 2225 { 2226 if ((s->flags & SEC_LINKER_CREATED) == 0) 2227 continue; 2228 2229 if (s == htab->root.splt 2230 || s == htab->root.sgot 2231 || s == htab->root.sgotplt 2232 || s == htab->sdynbss) 2233 { 2234 /* Strip this section if we don't need it; see the 2235 comment below. */ 2236 } 2237 else if (CONST_STRNEQ (bfd_section_name (s), ".rela")) 2238 { 2239 if (s->size != 0 && s != htab->root.srelplt) 2240 relocs = TRUE; 2241 2242 /* We use the reloc_count field as a counter if we need 2243 to copy relocs into the output file. */ 2244 s->reloc_count = 0; 2245 } 2246 else 2247 /* It's not one of our sections, so don't allocate space. */ 2248 continue; 2249 2250 if (s->size == 0) 2251 { 2252 /* If we don't need this section, strip it from the 2253 output file. This is mostly to handle .rela.bss and 2254 .rela.plt. We must create both sections in 2255 create_dynamic_sections, because they must be created 2256 before the linker maps input sections to output 2257 sections. The linker does that before 2258 adjust_dynamic_symbol is called, and it is that 2259 function which decides whether anything needs to go 2260 into these sections. */ 2261 s->flags |= SEC_EXCLUDE; 2262 continue; 2263 } 2264 2265 if ((s->flags & SEC_HAS_CONTENTS) == 0) 2266 continue; 2267 2268 /* Allocate memory for the section contents. We use bfd_zalloc 2269 here in case unused entries are not reclaimed before the 2270 section's contents are written out. This should not happen, 2271 but this way if it does, we get a R_M32R_NONE reloc instead 2272 of garbage. */ 2273 s->contents = bfd_zalloc (dynobj, s->size); 2274 if (s->contents == NULL) 2275 return FALSE; 2276 } 2277 2278 if (htab->root.dynamic_sections_created) 2279 { 2280 /* Add some entries to the .dynamic section. We fill in the 2281 values later, in m32r_elf_finish_dynamic_sections, but we 2282 must add the entries now so that we get the correct size for 2283 the .dynamic section. The DT_DEBUG entry is filled in by the 2284 dynamic linker and used by the debugger. */ 2285 #define add_dynamic_entry(TAG, VAL) \ 2286 _bfd_elf_add_dynamic_entry (info, TAG, VAL) 2287 2288 if (bfd_link_executable (info)) 2289 { 2290 if (! add_dynamic_entry (DT_DEBUG, 0)) 2291 return FALSE; 2292 } 2293 2294 if (htab->root.splt->size != 0) 2295 { 2296 if (! add_dynamic_entry (DT_PLTGOT, 0) 2297 || ! add_dynamic_entry (DT_PLTRELSZ, 0) 2298 || ! add_dynamic_entry (DT_PLTREL, DT_RELA) 2299 || ! add_dynamic_entry (DT_JMPREL, 0)) 2300 return FALSE; 2301 } 2302 2303 if (relocs) 2304 { 2305 if (! add_dynamic_entry (DT_RELA, 0) 2306 || ! add_dynamic_entry (DT_RELASZ, 0) 2307 || ! add_dynamic_entry (DT_RELAENT, 2308 sizeof (Elf32_External_Rela))) 2309 return FALSE; 2310 2311 /* If any dynamic relocs apply to a read-only section, 2312 then we need a DT_TEXTREL entry. */ 2313 if ((info->flags & DF_TEXTREL) == 0) 2314 elf_link_hash_traverse (&htab->root, maybe_set_textrel, info); 2315 2316 if ((info->flags & DF_TEXTREL) != 0) 2317 { 2318 if (! add_dynamic_entry (DT_TEXTREL, 0)) 2319 return FALSE; 2320 } 2321 } 2322 } 2323 #undef add_dynamic_entry 2324 2325 return TRUE; 2326 } 2327 2328 /* Relocate an M32R/D ELF section. 2329 There is some attempt to make this function usable for many architectures, 2330 both for RELA and REL type relocs, if only to serve as a learning tool. 2331 2332 The RELOCATE_SECTION function is called by the new ELF backend linker 2333 to handle the relocations for a section. 2334 2335 The relocs are always passed as Rela structures; if the section 2336 actually uses Rel structures, the r_addend field will always be 2337 zero. 2338 2339 This function is responsible for adjust the section contents as 2340 necessary, and (if using Rela relocs and generating a 2341 relocatable output file) adjusting the reloc addend as 2342 necessary. 2343 2344 This function does not have to worry about setting the reloc 2345 address or the reloc symbol index. 2346 2347 LOCAL_SYMS is a pointer to the swapped in local symbols. 2348 2349 LOCAL_SECTIONS is an array giving the section in the input file 2350 corresponding to the st_shndx field of each local symbol. 2351 2352 The global hash table entry for the global symbols can be found 2353 via elf_sym_hashes (input_bfd). 2354 2355 When generating relocatable output, this function must handle 2356 STB_LOCAL/STT_SECTION symbols specially. The output symbol is 2357 going to be the section symbol corresponding to the output 2358 section, which means that the addend must be adjusted 2359 accordingly. */ 2360 2361 static bfd_boolean 2362 m32r_elf_relocate_section (bfd *output_bfd ATTRIBUTE_UNUSED, 2363 struct bfd_link_info *info, 2364 bfd *input_bfd, 2365 asection *input_section, 2366 bfd_byte *contents, 2367 Elf_Internal_Rela *relocs, 2368 Elf_Internal_Sym *local_syms, 2369 asection **local_sections) 2370 { 2371 Elf_Internal_Shdr *symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; 2372 struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (input_bfd); 2373 Elf_Internal_Rela *rel, *relend; 2374 /* Assume success. */ 2375 bfd_boolean ret = TRUE; 2376 struct elf_m32r_link_hash_table *htab = m32r_elf_hash_table (info); 2377 bfd_vma *local_got_offsets; 2378 asection *sgot, *splt, *sreloc; 2379 bfd_vma high_address = bfd_get_section_limit (input_bfd, input_section); 2380 2381 if (htab == NULL) 2382 return FALSE; 2383 2384 local_got_offsets = elf_local_got_offsets (input_bfd); 2385 2386 sgot = htab->root.sgot; 2387 splt = htab->root.splt; 2388 sreloc = NULL; 2389 2390 rel = relocs; 2391 relend = relocs + input_section->reloc_count; 2392 for (; rel < relend; rel++) 2393 { 2394 int r_type; 2395 reloc_howto_type *howto; 2396 unsigned long r_symndx; 2397 struct elf_link_hash_entry *h; 2398 /* We can't modify r_addend here as elf_link_input_bfd has an assert to 2399 ensure it's zero (we use REL relocs, not RELA). Therefore this 2400 should be assigning zero to `addend', but for clarity we use 2401 `r_addend'. */ 2402 bfd_vma addend = rel->r_addend; 2403 bfd_vma offset = rel->r_offset; 2404 bfd_vma relocation; 2405 Elf_Internal_Sym *sym; 2406 asection *sec; 2407 const char *sym_name; 2408 bfd_reloc_status_type r; 2409 const char *errmsg = NULL; 2410 bfd_boolean use_rel = FALSE; 2411 2412 h = NULL; 2413 r_type = ELF32_R_TYPE (rel->r_info); 2414 if (r_type < 0 || r_type >= (int) R_M32R_max) 2415 { 2416 /* xgettext:c-format */ 2417 _bfd_error_handler (_("%pB: unsupported relocation type %#x"), 2418 input_bfd, (int) r_type); 2419 bfd_set_error (bfd_error_bad_value); 2420 ret = FALSE; 2421 continue; 2422 } 2423 2424 if ( r_type == R_M32R_GNU_VTENTRY 2425 || r_type == R_M32R_GNU_VTINHERIT 2426 || r_type == R_M32R_NONE 2427 || r_type == R_M32R_RELA_GNU_VTENTRY 2428 || r_type == R_M32R_RELA_GNU_VTINHERIT) 2429 continue; 2430 2431 if (r_type <= R_M32R_GNU_VTENTRY) 2432 use_rel = TRUE; 2433 2434 howto = m32r_elf_howto_table + r_type; 2435 r_symndx = ELF32_R_SYM (rel->r_info); 2436 2437 sym = NULL; 2438 sec = NULL; 2439 h = NULL; 2440 2441 if (r_symndx < symtab_hdr->sh_info) 2442 { 2443 /* Local symbol. */ 2444 sym = local_syms + r_symndx; 2445 sec = local_sections[r_symndx]; 2446 sym_name = "<local symbol>"; 2447 2448 if (!use_rel) 2449 { 2450 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel); 2451 addend = rel->r_addend; 2452 } 2453 else 2454 { 2455 relocation = (sec->output_section->vma 2456 + sec->output_offset 2457 + sym->st_value); 2458 } 2459 } 2460 else 2461 { 2462 /* External symbol. */ 2463 relocation = 0; 2464 2465 h = sym_hashes[r_symndx - symtab_hdr->sh_info]; 2466 2467 if (info->wrap_hash != NULL 2468 && (input_section->flags & SEC_DEBUGGING) != 0) 2469 h = ((struct elf_link_hash_entry *) 2470 unwrap_hash_lookup (info, input_bfd, &h->root)); 2471 2472 while (h->root.type == bfd_link_hash_indirect 2473 || h->root.type == bfd_link_hash_warning) 2474 h = (struct elf_link_hash_entry *) h->root.u.i.link; 2475 sym_name = h->root.root.string; 2476 2477 if (h->root.type == bfd_link_hash_defined 2478 || h->root.type == bfd_link_hash_defweak) 2479 { 2480 bfd_boolean dyn; 2481 sec = h->root.u.def.section; 2482 2483 dyn = htab->root.dynamic_sections_created; 2484 sec = h->root.u.def.section; 2485 if (r_type == R_M32R_GOTPC24 2486 || (r_type == R_M32R_GOTPC_HI_ULO 2487 || r_type == R_M32R_GOTPC_HI_SLO 2488 || r_type == R_M32R_GOTPC_LO) 2489 || (r_type == R_M32R_26_PLTREL 2490 && h->plt.offset != (bfd_vma) -1) 2491 || ((r_type == R_M32R_GOT24 2492 || r_type == R_M32R_GOT16_HI_ULO 2493 || r_type == R_M32R_GOT16_HI_SLO 2494 || r_type == R_M32R_GOT16_LO) 2495 && WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 2496 bfd_link_pic (info), 2497 h) 2498 && (! bfd_link_pic (info) 2499 || (! info->symbolic && h->dynindx != -1) 2500 || !h->def_regular)) 2501 || (bfd_link_pic (info) 2502 && ((! info->symbolic && h->dynindx != -1) 2503 || !h->def_regular) 2504 && (((r_type == R_M32R_16_RELA 2505 || r_type == R_M32R_32_RELA 2506 || r_type == R_M32R_24_RELA 2507 || r_type == R_M32R_HI16_ULO_RELA 2508 || r_type == R_M32R_HI16_SLO_RELA 2509 || r_type == R_M32R_LO16_RELA) 2510 && !h->forced_local) 2511 || r_type == R_M32R_REL32 2512 || r_type == R_M32R_10_PCREL_RELA 2513 || r_type == R_M32R_18_PCREL_RELA 2514 || r_type == R_M32R_26_PCREL_RELA) 2515 && ((input_section->flags & SEC_ALLOC) != 0 2516 /* DWARF will emit R_M32R_16(24,32) relocations 2517 in its sections against symbols defined 2518 externally in shared libraries. We can't do 2519 anything with them here. */ 2520 || ((input_section->flags & SEC_DEBUGGING) != 0 2521 && h->def_dynamic)))) 2522 { 2523 /* In these cases, we don't need the relocation 2524 value. We check specially because in some 2525 obscure cases sec->output_section will be NULL. */ 2526 } 2527 else if (sec->output_section != NULL) 2528 relocation = (h->root.u.def.value 2529 + sec->output_section->vma 2530 + sec->output_offset); 2531 else if (!bfd_link_relocatable (info) 2532 && (_bfd_elf_section_offset (output_bfd, info, 2533 input_section, 2534 rel->r_offset) 2535 != (bfd_vma) -1)) 2536 { 2537 _bfd_error_handler 2538 /* xgettext:c-format */ 2539 (_("%pB(%pA+%#" PRIx64 "): unresolvable %s relocation " 2540 "against symbol `%s'"), 2541 input_bfd, 2542 input_section, 2543 (uint64_t) rel->r_offset, 2544 howto->name, 2545 h->root.root.string); 2546 } 2547 } 2548 else if (h->root.type == bfd_link_hash_undefweak) 2549 ; 2550 else if (info->unresolved_syms_in_objects == RM_IGNORE 2551 && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT) 2552 ; 2553 else if (!bfd_link_relocatable (info)) 2554 (*info->callbacks->undefined_symbol) 2555 (info, h->root.root.string, input_bfd, 2556 input_section, offset, 2557 (info->unresolved_syms_in_objects == RM_GENERATE_ERROR 2558 || ELF_ST_VISIBILITY (h->other))); 2559 } 2560 2561 if (sec != NULL && discarded_section (sec)) 2562 RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section, 2563 rel, 1, relend, howto, 0, contents); 2564 2565 if (bfd_link_relocatable (info) && !use_rel) 2566 { 2567 /* This is a relocatable link. We don't have to change 2568 anything, unless the reloc is against a section symbol, 2569 in which case we have to adjust according to where the 2570 section symbol winds up in the output section. */ 2571 if (sym != NULL && ELF_ST_TYPE (sym->st_info) == STT_SECTION) 2572 rel->r_addend += sec->output_offset; 2573 continue; 2574 } 2575 2576 if (bfd_link_relocatable (info) && use_rel) 2577 { 2578 /* This is a relocatable link. We don't have to change 2579 anything, unless the reloc is against a section symbol, 2580 in which case we have to adjust according to where the 2581 section symbol winds up in the output section. */ 2582 if (sym == NULL || ELF_ST_TYPE (sym->st_info) != STT_SECTION) 2583 continue; 2584 2585 addend += sec->output_offset; 2586 2587 /* If partial_inplace, we need to store any additional addend 2588 back in the section. */ 2589 if (! howto->partial_inplace) 2590 continue; 2591 /* ??? Here is a nice place to call a special_function 2592 like handler. */ 2593 if (r_type != R_M32R_HI16_SLO && r_type != R_M32R_HI16_ULO) 2594 r = _bfd_relocate_contents (howto, input_bfd, 2595 addend, contents + offset); 2596 else 2597 { 2598 Elf_Internal_Rela *lorel; 2599 2600 /* We allow an arbitrary number of HI16 relocs before the 2601 LO16 reloc. This permits gcc to emit the HI and LO relocs 2602 itself. */ 2603 for (lorel = rel + 1; 2604 (lorel < relend 2605 && (ELF32_R_TYPE (lorel->r_info) == R_M32R_HI16_SLO 2606 || ELF32_R_TYPE (lorel->r_info) == R_M32R_HI16_ULO)); 2607 lorel++) 2608 continue; 2609 if (lorel < relend 2610 && ELF32_R_TYPE (lorel->r_info) == R_M32R_LO16) 2611 { 2612 m32r_elf_relocate_hi16 (input_bfd, r_type, rel, lorel, 2613 contents, addend); 2614 r = bfd_reloc_ok; 2615 } 2616 else 2617 r = _bfd_relocate_contents (howto, input_bfd, 2618 addend, contents + offset); 2619 } 2620 } 2621 else 2622 { 2623 /* Sanity check the address. */ 2624 if (offset > high_address) 2625 { 2626 r = bfd_reloc_outofrange; 2627 goto check_reloc; 2628 } 2629 2630 switch ((int) r_type) 2631 { 2632 case R_M32R_GOTOFF: 2633 /* Relocation is relative to the start of the global offset 2634 table (for ld24 rx, #uimm24). eg access at label+addend 2635 2636 ld24 rx. #label@GOTOFF + addend 2637 sub rx, r12. */ 2638 2639 BFD_ASSERT (sgot != NULL); 2640 2641 relocation = -(relocation - sgot->output_section->vma); 2642 rel->r_addend = -rel->r_addend; 2643 break; 2644 2645 case R_M32R_GOTOFF_HI_ULO: 2646 case R_M32R_GOTOFF_HI_SLO: 2647 case R_M32R_GOTOFF_LO: 2648 BFD_ASSERT (sgot != NULL); 2649 2650 relocation -= sgot->output_section->vma; 2651 2652 if ((r_type == R_M32R_GOTOFF_HI_SLO) 2653 && ((relocation + rel->r_addend) & 0x8000)) 2654 rel->r_addend += 0x10000; 2655 break; 2656 2657 case R_M32R_GOTPC24: 2658 /* .got(_GLOBAL_OFFSET_TABLE_) - pc relocation 2659 ld24 rx,#_GLOBAL_OFFSET_TABLE_ 2660 */ 2661 relocation = sgot->output_section->vma; 2662 break; 2663 2664 case R_M32R_GOTPC_HI_ULO: 2665 case R_M32R_GOTPC_HI_SLO: 2666 case R_M32R_GOTPC_LO: 2667 { 2668 /* .got(_GLOBAL_OFFSET_TABLE_) - pc relocation 2669 bl .+4 2670 seth rx,#high(_GLOBAL_OFFSET_TABLE_) 2671 or3 rx,rx,#low(_GLOBAL_OFFSET_TABLE_ +4) 2672 or 2673 bl .+4 2674 seth rx,#shigh(_GLOBAL_OFFSET_TABLE_) 2675 add3 rx,rx,#low(_GLOBAL_OFFSET_TABLE_ +4) 2676 */ 2677 relocation = sgot->output_section->vma; 2678 relocation -= (input_section->output_section->vma 2679 + input_section->output_offset 2680 + rel->r_offset); 2681 if ((r_type == R_M32R_GOTPC_HI_SLO) 2682 && ((relocation + rel->r_addend) & 0x8000)) 2683 rel->r_addend += 0x10000; 2684 2685 break; 2686 } 2687 case R_M32R_GOT16_HI_ULO: 2688 case R_M32R_GOT16_HI_SLO: 2689 case R_M32R_GOT16_LO: 2690 /* Fall through. */ 2691 case R_M32R_GOT24: 2692 /* Relocation is to the entry for this symbol in the global 2693 offset table. */ 2694 BFD_ASSERT (sgot != NULL); 2695 2696 if (h != NULL) 2697 { 2698 bfd_boolean dyn; 2699 bfd_vma off; 2700 2701 off = h->got.offset; 2702 BFD_ASSERT (off != (bfd_vma) -1); 2703 2704 dyn = htab->root.dynamic_sections_created; 2705 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 2706 bfd_link_pic (info), 2707 h) 2708 || (bfd_link_pic (info) 2709 && (info->symbolic 2710 || h->dynindx == -1 2711 || h->forced_local) 2712 && h->def_regular)) 2713 { 2714 /* This is actually a static link, or it is a 2715 -Bsymbolic link and the symbol is defined 2716 locally, or the symbol was forced to be local 2717 because of a version file. We must initialize 2718 this entry in the global offset table. Since the 2719 offset must always be a multiple of 4, we use the 2720 least significant bit to record whether we have 2721 initialized it already. 2722 2723 When doing a dynamic link, we create a .rela.got 2724 relocation entry to initialize the value. This 2725 is done in the finish_dynamic_symbol routine. */ 2726 if ((off & 1) != 0) 2727 off &= ~1; 2728 else 2729 { 2730 bfd_put_32 (output_bfd, relocation, 2731 sgot->contents + off); 2732 h->got.offset |= 1; 2733 } 2734 } 2735 2736 relocation = sgot->output_offset + off; 2737 } 2738 else 2739 { 2740 bfd_vma off; 2741 bfd_byte *loc; 2742 2743 BFD_ASSERT (local_got_offsets != NULL 2744 && local_got_offsets[r_symndx] != (bfd_vma) -1); 2745 2746 off = local_got_offsets[r_symndx]; 2747 2748 /* The offset must always be a multiple of 4. We use 2749 the least significant bit to record whether we have 2750 already processed this entry. */ 2751 if ((off & 1) != 0) 2752 off &= ~1; 2753 else 2754 { 2755 bfd_put_32 (output_bfd, relocation, sgot->contents + off); 2756 2757 if (bfd_link_pic (info)) 2758 { 2759 asection *srelgot; 2760 Elf_Internal_Rela outrel; 2761 2762 /* We need to generate a R_M32R_RELATIVE reloc 2763 for the dynamic linker. */ 2764 srelgot = htab->root.srelgot; 2765 BFD_ASSERT (srelgot != NULL); 2766 2767 outrel.r_offset = (sgot->output_section->vma 2768 + sgot->output_offset 2769 + off); 2770 outrel.r_info = ELF32_R_INFO (0, R_M32R_RELATIVE); 2771 outrel.r_addend = relocation; 2772 loc = srelgot->contents; 2773 loc += srelgot->reloc_count * sizeof (Elf32_External_Rela); 2774 bfd_elf32_swap_reloca_out (output_bfd, &outrel,loc); 2775 ++srelgot->reloc_count; 2776 } 2777 2778 local_got_offsets[r_symndx] |= 1; 2779 } 2780 2781 relocation = sgot->output_offset + off; 2782 } 2783 if ((r_type == R_M32R_GOT16_HI_SLO) 2784 && ((relocation + rel->r_addend) & 0x8000)) 2785 rel->r_addend += 0x10000; 2786 2787 break; 2788 2789 case R_M32R_26_PLTREL: 2790 /* Relocation is to the entry for this symbol in the 2791 procedure linkage table. */ 2792 2793 /* The native assembler will generate a 26_PLTREL reloc 2794 for a local symbol if you assemble a call from one 2795 section to another when using -K pic. */ 2796 if (h == NULL) 2797 break; 2798 2799 if (h->forced_local) 2800 break; 2801 2802 if (h->plt.offset == (bfd_vma) -1) 2803 /* We didn't make a PLT entry for this symbol. This 2804 happens when statically linking PIC code, or when 2805 using -Bsymbolic. */ 2806 break; 2807 2808 relocation = (splt->output_section->vma 2809 + splt->output_offset 2810 + h->plt.offset); 2811 break; 2812 2813 case R_M32R_HI16_SLO_RELA: 2814 if ((relocation + rel->r_addend) & 0x8000) 2815 rel->r_addend += 0x10000; 2816 /* Fall through. */ 2817 2818 case R_M32R_16_RELA: 2819 case R_M32R_24_RELA: 2820 case R_M32R_32_RELA: 2821 case R_M32R_REL32: 2822 case R_M32R_10_PCREL_RELA: 2823 case R_M32R_18_PCREL_RELA: 2824 case R_M32R_26_PCREL_RELA: 2825 case R_M32R_HI16_ULO_RELA: 2826 case R_M32R_LO16_RELA: 2827 if (bfd_link_pic (info) 2828 && r_symndx != STN_UNDEF 2829 && (input_section->flags & SEC_ALLOC) != 0 2830 && (( r_type != R_M32R_10_PCREL_RELA 2831 && r_type != R_M32R_18_PCREL_RELA 2832 && r_type != R_M32R_26_PCREL_RELA 2833 && r_type != R_M32R_REL32) 2834 || (h != NULL 2835 && h->dynindx != -1 2836 && (! info->symbolic 2837 || !h->def_regular)))) 2838 { 2839 Elf_Internal_Rela outrel; 2840 bfd_boolean skip, relocate; 2841 bfd_byte *loc; 2842 2843 /* When generating a shared object, these relocations 2844 are copied into the output file to be resolved at run 2845 time. */ 2846 if (sreloc == NULL) 2847 { 2848 sreloc = _bfd_elf_get_dynamic_reloc_section 2849 (input_bfd, input_section, /*rela?*/ TRUE); 2850 if (sreloc == NULL) 2851 return FALSE; 2852 } 2853 2854 skip = FALSE; 2855 relocate = FALSE; 2856 2857 outrel.r_offset = _bfd_elf_section_offset (output_bfd, 2858 info, 2859 input_section, 2860 rel->r_offset); 2861 if (outrel.r_offset == (bfd_vma) -1) 2862 skip = TRUE; 2863 else if (outrel.r_offset == (bfd_vma) -2) 2864 skip = relocate = TRUE; 2865 outrel.r_offset += (input_section->output_section->vma 2866 + input_section->output_offset); 2867 2868 if (skip) 2869 memset (&outrel, 0, sizeof outrel); 2870 else if ( r_type == R_M32R_10_PCREL_RELA 2871 || r_type == R_M32R_18_PCREL_RELA 2872 || r_type == R_M32R_26_PCREL_RELA 2873 || r_type == R_M32R_REL32) 2874 { 2875 BFD_ASSERT (h != NULL && h->dynindx != -1); 2876 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type); 2877 outrel.r_addend = rel->r_addend; 2878 } 2879 else 2880 { 2881 /* h->dynindx may be -1 if this symbol was marked to 2882 become local. */ 2883 if (h == NULL 2884 || ((info->symbolic || h->dynindx == -1) 2885 && h->def_regular)) 2886 { 2887 relocate = TRUE; 2888 outrel.r_info = ELF32_R_INFO (0, R_M32R_RELATIVE); 2889 outrel.r_addend = relocation + rel->r_addend; 2890 } 2891 else 2892 { 2893 BFD_ASSERT (h->dynindx != -1); 2894 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type); 2895 outrel.r_addend = relocation + rel->r_addend; 2896 } 2897 } 2898 2899 loc = sreloc->contents; 2900 loc += sreloc->reloc_count * sizeof (Elf32_External_Rela); 2901 bfd_elf32_swap_reloca_out (output_bfd, &outrel,loc); 2902 ++sreloc->reloc_count; 2903 2904 /* If this reloc is against an external symbol, we do 2905 not want to fiddle with the addend. Otherwise, we 2906 need to include the symbol value so that it becomes 2907 an addend for the dynamic reloc. */ 2908 if (! relocate) 2909 continue; 2910 break; 2911 } 2912 else if (r_type != R_M32R_10_PCREL_RELA) 2913 break; 2914 /* Fall through. */ 2915 2916 case (int) R_M32R_10_PCREL : 2917 r = m32r_elf_do_10_pcrel_reloc (input_bfd, howto, input_section, 2918 contents, offset, 2919 sec, relocation, addend); 2920 goto check_reloc; 2921 2922 case (int) R_M32R_HI16_SLO : 2923 case (int) R_M32R_HI16_ULO : 2924 { 2925 Elf_Internal_Rela *lorel; 2926 2927 /* We allow an arbitrary number of HI16 relocs before the 2928 LO16 reloc. This permits gcc to emit the HI and LO relocs 2929 itself. */ 2930 for (lorel = rel + 1; 2931 (lorel < relend 2932 && (ELF32_R_TYPE (lorel->r_info) == R_M32R_HI16_SLO 2933 || ELF32_R_TYPE (lorel->r_info) == R_M32R_HI16_ULO)); 2934 lorel++) 2935 continue; 2936 if (lorel < relend 2937 && ELF32_R_TYPE (lorel->r_info) == R_M32R_LO16) 2938 { 2939 m32r_elf_relocate_hi16 (input_bfd, r_type, rel, lorel, 2940 contents, relocation + addend); 2941 r = bfd_reloc_ok; 2942 } 2943 else 2944 r = _bfd_final_link_relocate (howto, input_bfd, input_section, 2945 contents, offset, 2946 relocation, addend); 2947 } 2948 2949 goto check_reloc; 2950 2951 case (int) R_M32R_SDA16_RELA: 2952 case (int) R_M32R_SDA16 : 2953 { 2954 const char *name; 2955 2956 BFD_ASSERT (sec != NULL); 2957 name = bfd_section_name (sec); 2958 2959 if ( strcmp (name, ".sdata") == 0 2960 || strcmp (name, ".sbss") == 0 2961 || strcmp (name, ".scommon") == 0) 2962 { 2963 bfd_vma sda_base; 2964 bfd *out_bfd = sec->output_section->owner; 2965 2966 r = m32r_elf_final_sda_base (out_bfd, info, 2967 &errmsg, 2968 &sda_base); 2969 if (r != bfd_reloc_ok) 2970 { 2971 ret = FALSE; 2972 goto check_reloc; 2973 } 2974 2975 /* At this point `relocation' contains the object's 2976 address. */ 2977 relocation -= sda_base; 2978 /* Now it contains the offset from _SDA_BASE_. */ 2979 } 2980 else 2981 { 2982 _bfd_error_handler 2983 /* xgettext:c-format */ 2984 (_("%pB: the target (%s) of an %s relocation" 2985 " is in the wrong section (%pA)"), 2986 input_bfd, 2987 sym_name, 2988 m32r_elf_howto_table[(int) r_type].name, 2989 sec); 2990 /*bfd_set_error (bfd_error_bad_value); ??? why? */ 2991 ret = FALSE; 2992 continue; 2993 } 2994 } 2995 /* Fall through. */ 2996 2997 default : /* OLD_M32R_RELOC */ 2998 2999 r = _bfd_final_link_relocate (howto, input_bfd, input_section, 3000 contents, offset, 3001 relocation, addend); 3002 goto check_reloc; 3003 } 3004 3005 r = _bfd_final_link_relocate (howto, input_bfd, input_section, 3006 contents, rel->r_offset, 3007 relocation, rel->r_addend); 3008 3009 } 3010 3011 check_reloc: 3012 3013 if (r != bfd_reloc_ok) 3014 { 3015 /* FIXME: This should be generic enough to go in a utility. */ 3016 const char *name; 3017 3018 if (h != NULL) 3019 name = h->root.root.string; 3020 else 3021 { 3022 name = (bfd_elf_string_from_elf_section 3023 (input_bfd, symtab_hdr->sh_link, sym->st_name)); 3024 if (name == NULL || *name == '\0') 3025 name = bfd_section_name (sec); 3026 } 3027 3028 if (errmsg != NULL) 3029 goto common_error; 3030 3031 switch (r) 3032 { 3033 case bfd_reloc_overflow: 3034 (*info->callbacks->reloc_overflow) 3035 (info, (h ? &h->root : NULL), name, howto->name, 3036 (bfd_vma) 0, input_bfd, input_section, offset); 3037 break; 3038 3039 case bfd_reloc_undefined: 3040 (*info->callbacks->undefined_symbol) 3041 (info, name, input_bfd, input_section, offset, TRUE); 3042 break; 3043 3044 case bfd_reloc_outofrange: 3045 errmsg = _("internal error: out of range error"); 3046 goto common_error; 3047 3048 case bfd_reloc_notsupported: 3049 errmsg = _("internal error: unsupported relocation error"); 3050 goto common_error; 3051 3052 case bfd_reloc_dangerous: 3053 errmsg = _("internal error: dangerous error"); 3054 goto common_error; 3055 3056 default: 3057 errmsg = _("internal error: unknown error"); 3058 /* fall through */ 3059 3060 common_error: 3061 (*info->callbacks->warning) (info, errmsg, name, input_bfd, 3062 input_section, offset); 3063 break; 3064 } 3065 } 3066 } 3067 3068 return ret; 3069 } 3070 3071 /* Finish up dynamic symbol handling. We set the contents of various 3072 dynamic sections here. */ 3073 3074 static bfd_boolean 3075 m32r_elf_finish_dynamic_symbol (bfd *output_bfd, 3076 struct bfd_link_info *info, 3077 struct elf_link_hash_entry *h, 3078 Elf_Internal_Sym *sym) 3079 { 3080 struct elf_m32r_link_hash_table *htab; 3081 bfd_byte *loc; 3082 3083 #ifdef DEBUG_PIC 3084 printf ("m32r_elf_finish_dynamic_symbol()\n"); 3085 #endif 3086 3087 htab = m32r_elf_hash_table (info); 3088 if (htab == NULL) 3089 return FALSE; 3090 3091 if (h->plt.offset != (bfd_vma) -1) 3092 { 3093 asection *splt; 3094 asection *sgot; 3095 asection *srela; 3096 3097 bfd_vma plt_index; 3098 bfd_vma got_offset; 3099 Elf_Internal_Rela rela; 3100 3101 /* This symbol has an entry in the procedure linkage table. Set 3102 it up. */ 3103 3104 BFD_ASSERT (h->dynindx != -1); 3105 3106 splt = htab->root.splt; 3107 sgot = htab->root.sgotplt; 3108 srela = htab->root.srelplt; 3109 BFD_ASSERT (splt != NULL && sgot != NULL && srela != NULL); 3110 3111 /* Get the index in the procedure linkage table which 3112 corresponds to this symbol. This is the index of this symbol 3113 in all the symbols for which we are making plt entries. The 3114 first entry in the procedure linkage table is reserved. */ 3115 plt_index = h->plt.offset / PLT_ENTRY_SIZE - 1; 3116 3117 /* Get the offset into the .got table of the entry that 3118 corresponds to this function. Each .got entry is 4 bytes. 3119 The first three are reserved. */ 3120 got_offset = (plt_index + 3) * 4; 3121 3122 /* Fill in the entry in the procedure linkage table. */ 3123 if (! bfd_link_pic (info)) 3124 { 3125 bfd_put_32 (output_bfd, 3126 (PLT_ENTRY_WORD0b 3127 + (((sgot->output_section->vma 3128 + sgot->output_offset 3129 + got_offset) >> 16) & 0xffff)), 3130 splt->contents + h->plt.offset); 3131 bfd_put_32 (output_bfd, 3132 (PLT_ENTRY_WORD1b 3133 + ((sgot->output_section->vma 3134 + sgot->output_offset 3135 + got_offset) & 0xffff)), 3136 splt->contents + h->plt.offset + 4); 3137 bfd_put_32 (output_bfd, PLT_ENTRY_WORD2, 3138 splt->contents + h->plt.offset + 8); 3139 bfd_put_32 (output_bfd, 3140 (PLT_ENTRY_WORD3 3141 + plt_index * sizeof (Elf32_External_Rela)), 3142 splt->contents + h->plt.offset + 12); 3143 bfd_put_32 (output_bfd, 3144 (PLT_ENTRY_WORD4 3145 + (((unsigned int) ((- (h->plt.offset + 16)) >> 2)) & 0xffffff)), 3146 splt->contents + h->plt.offset + 16); 3147 } 3148 else 3149 { 3150 bfd_put_32 (output_bfd, 3151 PLT_ENTRY_WORD0 + got_offset, 3152 splt->contents + h->plt.offset); 3153 bfd_put_32 (output_bfd, PLT_ENTRY_WORD1, 3154 splt->contents + h->plt.offset + 4); 3155 bfd_put_32 (output_bfd, PLT_ENTRY_WORD2, 3156 splt->contents + h->plt.offset + 8); 3157 bfd_put_32 (output_bfd, 3158 (PLT_ENTRY_WORD3 3159 + plt_index * sizeof (Elf32_External_Rela)), 3160 splt->contents + h->plt.offset + 12); 3161 bfd_put_32 (output_bfd, 3162 (PLT_ENTRY_WORD4 3163 + (((unsigned int) ((- (h->plt.offset + 16)) >> 2)) & 0xffffff)), 3164 splt->contents + h->plt.offset + 16); 3165 } 3166 3167 /* Fill in the entry in the global offset table. */ 3168 bfd_put_32 (output_bfd, 3169 (splt->output_section->vma 3170 + splt->output_offset 3171 + h->plt.offset 3172 + 12), /* same offset */ 3173 sgot->contents + got_offset); 3174 3175 /* Fill in the entry in the .rela.plt section. */ 3176 rela.r_offset = (sgot->output_section->vma 3177 + sgot->output_offset 3178 + got_offset); 3179 rela.r_info = ELF32_R_INFO (h->dynindx, R_M32R_JMP_SLOT); 3180 rela.r_addend = 0; 3181 loc = srela->contents; 3182 loc += plt_index * sizeof (Elf32_External_Rela); 3183 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); 3184 3185 if (!h->def_regular) 3186 { 3187 /* Mark the symbol as undefined, rather than as defined in 3188 the .plt section. Leave the value alone. */ 3189 sym->st_shndx = SHN_UNDEF; 3190 } 3191 } 3192 3193 if (h->got.offset != (bfd_vma) -1) 3194 { 3195 asection *sgot; 3196 asection *srela; 3197 Elf_Internal_Rela rela; 3198 3199 /* This symbol has an entry in the global offset table. Set it 3200 up. */ 3201 3202 sgot = htab->root.sgot; 3203 srela = htab->root.srelgot; 3204 BFD_ASSERT (sgot != NULL && srela != NULL); 3205 3206 rela.r_offset = (sgot->output_section->vma 3207 + sgot->output_offset 3208 + (h->got.offset &~ 1)); 3209 3210 /* If this is a -Bsymbolic link, and the symbol is defined 3211 locally, we just want to emit a RELATIVE reloc. Likewise if 3212 the symbol was forced to be local because of a version file. 3213 The entry in the global offset table will already have been 3214 initialized in the relocate_section function. */ 3215 if (bfd_link_pic (info) 3216 && (info->symbolic 3217 || h->dynindx == -1 3218 || h->forced_local) 3219 && h->def_regular) 3220 { 3221 rela.r_info = ELF32_R_INFO (0, R_M32R_RELATIVE); 3222 rela.r_addend = (h->root.u.def.value 3223 + h->root.u.def.section->output_section->vma 3224 + h->root.u.def.section->output_offset); 3225 } 3226 else 3227 { 3228 BFD_ASSERT ((h->got.offset & 1) == 0); 3229 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + h->got.offset); 3230 rela.r_info = ELF32_R_INFO (h->dynindx, R_M32R_GLOB_DAT); 3231 rela.r_addend = 0; 3232 } 3233 3234 loc = srela->contents; 3235 loc += srela->reloc_count * sizeof (Elf32_External_Rela); 3236 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); 3237 ++srela->reloc_count; 3238 } 3239 3240 if (h->needs_copy) 3241 { 3242 asection *s; 3243 Elf_Internal_Rela rela; 3244 3245 /* This symbols needs a copy reloc. Set it up. */ 3246 3247 BFD_ASSERT (h->dynindx != -1 3248 && (h->root.type == bfd_link_hash_defined 3249 || h->root.type == bfd_link_hash_defweak)); 3250 3251 s = bfd_get_linker_section (htab->root.dynobj, ".rela.bss"); 3252 BFD_ASSERT (s != NULL); 3253 3254 rela.r_offset = (h->root.u.def.value 3255 + h->root.u.def.section->output_section->vma 3256 + h->root.u.def.section->output_offset); 3257 rela.r_info = ELF32_R_INFO (h->dynindx, R_M32R_COPY); 3258 rela.r_addend = 0; 3259 loc = s->contents; 3260 loc += s->reloc_count * sizeof (Elf32_External_Rela); 3261 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); 3262 ++s->reloc_count; 3263 } 3264 3265 /* Mark some specially defined symbols as absolute. */ 3266 if (h == htab->root.hdynamic || h == htab->root.hgot) 3267 sym->st_shndx = SHN_ABS; 3268 3269 return TRUE; 3270 } 3271 3272 3273 /* Finish up the dynamic sections. */ 3274 3275 static bfd_boolean 3276 m32r_elf_finish_dynamic_sections (bfd *output_bfd, 3277 struct bfd_link_info *info) 3278 { 3279 struct elf_m32r_link_hash_table *htab; 3280 bfd *dynobj; 3281 asection *sdyn; 3282 asection *sgot; 3283 3284 #ifdef DEBUG_PIC 3285 printf ("m32r_elf_finish_dynamic_sections()\n"); 3286 #endif 3287 3288 htab = m32r_elf_hash_table (info); 3289 if (htab == NULL) 3290 return FALSE; 3291 3292 dynobj = htab->root.dynobj; 3293 3294 sgot = htab->root.sgotplt; 3295 sdyn = bfd_get_linker_section (dynobj, ".dynamic"); 3296 3297 if (htab->root.dynamic_sections_created) 3298 { 3299 asection *splt; 3300 Elf32_External_Dyn *dyncon, *dynconend; 3301 3302 BFD_ASSERT (sgot != NULL && sdyn != NULL); 3303 3304 dyncon = (Elf32_External_Dyn *) sdyn->contents; 3305 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size); 3306 3307 for (; dyncon < dynconend; dyncon++) 3308 { 3309 Elf_Internal_Dyn dyn; 3310 asection *s; 3311 3312 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn); 3313 3314 switch (dyn.d_tag) 3315 { 3316 default: 3317 break; 3318 3319 case DT_PLTGOT: 3320 s = htab->root.sgotplt; 3321 goto get_vma; 3322 case DT_JMPREL: 3323 s = htab->root.srelplt; 3324 get_vma: 3325 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; 3326 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); 3327 break; 3328 3329 case DT_PLTRELSZ: 3330 s = htab->root.srelplt; 3331 dyn.d_un.d_val = s->size; 3332 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); 3333 break; 3334 } 3335 } 3336 3337 /* Fill in the first entry in the procedure linkage table. */ 3338 splt = htab->root.splt; 3339 if (splt && splt->size > 0) 3340 { 3341 if (bfd_link_pic (info)) 3342 { 3343 bfd_put_32 (output_bfd, PLT0_PIC_ENTRY_WORD0, splt->contents); 3344 bfd_put_32 (output_bfd, PLT0_PIC_ENTRY_WORD1, splt->contents + 4); 3345 bfd_put_32 (output_bfd, PLT0_PIC_ENTRY_WORD2, splt->contents + 8); 3346 bfd_put_32 (output_bfd, PLT0_PIC_ENTRY_WORD3, splt->contents + 12); 3347 bfd_put_32 (output_bfd, PLT0_PIC_ENTRY_WORD4, splt->contents + 16); 3348 } 3349 else 3350 { 3351 unsigned long addr; 3352 /* addr = .got + 4 */ 3353 addr = sgot->output_section->vma + sgot->output_offset + 4; 3354 bfd_put_32 (output_bfd, 3355 PLT0_ENTRY_WORD0 | ((addr >> 16) & 0xffff), 3356 splt->contents); 3357 bfd_put_32 (output_bfd, 3358 PLT0_ENTRY_WORD1 | (addr & 0xffff), 3359 splt->contents + 4); 3360 bfd_put_32 (output_bfd, PLT0_ENTRY_WORD2, splt->contents + 8); 3361 bfd_put_32 (output_bfd, PLT0_ENTRY_WORD3, splt->contents + 12); 3362 bfd_put_32 (output_bfd, PLT0_ENTRY_WORD4, splt->contents + 16); 3363 } 3364 3365 elf_section_data (splt->output_section)->this_hdr.sh_entsize = 3366 PLT_ENTRY_SIZE; 3367 } 3368 } 3369 3370 /* Fill in the first three entries in the global offset table. */ 3371 if (sgot && sgot->size > 0) 3372 { 3373 if (sdyn == NULL) 3374 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents); 3375 else 3376 bfd_put_32 (output_bfd, 3377 sdyn->output_section->vma + sdyn->output_offset, 3378 sgot->contents); 3379 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 4); 3380 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 8); 3381 3382 elf_section_data (sgot->output_section)->this_hdr.sh_entsize = 4; 3383 } 3384 3385 return TRUE; 3386 } 3387 3388 3389 /* Set the right machine number. */ 3390 3391 static bfd_boolean 3392 m32r_elf_object_p (bfd *abfd) 3393 { 3394 switch (elf_elfheader (abfd)->e_flags & EF_M32R_ARCH) 3395 { 3396 default: 3397 case E_M32R_ARCH: (void) bfd_default_set_arch_mach (abfd, bfd_arch_m32r, bfd_mach_m32r); break; 3398 case E_M32RX_ARCH: (void) bfd_default_set_arch_mach (abfd, bfd_arch_m32r, bfd_mach_m32rx); break; 3399 case E_M32R2_ARCH: (void) bfd_default_set_arch_mach (abfd, bfd_arch_m32r, bfd_mach_m32r2); break; 3400 } 3401 return TRUE; 3402 } 3403 3404 /* Store the machine number in the flags field. */ 3405 3406 static bfd_boolean 3407 m32r_elf_final_write_processing (bfd *abfd) 3408 { 3409 unsigned long val; 3410 3411 switch (bfd_get_mach (abfd)) 3412 { 3413 default: 3414 case bfd_mach_m32r: val = E_M32R_ARCH; break; 3415 case bfd_mach_m32rx: val = E_M32RX_ARCH; break; 3416 case bfd_mach_m32r2: val = E_M32R2_ARCH; break; 3417 } 3418 3419 elf_elfheader (abfd)->e_flags &=~ EF_M32R_ARCH; 3420 elf_elfheader (abfd)->e_flags |= val; 3421 return _bfd_elf_final_write_processing (abfd); 3422 } 3423 3424 /* Function to keep M32R specific file flags. */ 3425 3426 static bfd_boolean 3427 m32r_elf_set_private_flags (bfd *abfd, flagword flags) 3428 { 3429 BFD_ASSERT (!elf_flags_init (abfd) 3430 || elf_elfheader (abfd)->e_flags == flags); 3431 3432 elf_elfheader (abfd)->e_flags = flags; 3433 elf_flags_init (abfd) = TRUE; 3434 return TRUE; 3435 } 3436 3437 /* Merge backend specific data from an object file to the output 3438 object file when linking. */ 3439 3440 static bfd_boolean 3441 m32r_elf_merge_private_bfd_data (bfd *ibfd, struct bfd_link_info *info) 3442 { 3443 bfd *obfd = info->output_bfd; 3444 flagword out_flags; 3445 flagword in_flags; 3446 3447 if ( bfd_get_flavour (ibfd) != bfd_target_elf_flavour 3448 || bfd_get_flavour (obfd) != bfd_target_elf_flavour) 3449 return TRUE; 3450 3451 in_flags = elf_elfheader (ibfd)->e_flags; 3452 out_flags = elf_elfheader (obfd)->e_flags; 3453 3454 if (! elf_flags_init (obfd)) 3455 { 3456 /* If the input is the default architecture then do not 3457 bother setting the flags for the output architecture, 3458 instead allow future merges to do this. If no future 3459 merges ever set these flags then they will retain their 3460 unitialised values, which surprise surprise, correspond 3461 to the default values. */ 3462 if (bfd_get_arch_info (ibfd)->the_default) 3463 return TRUE; 3464 3465 elf_flags_init (obfd) = TRUE; 3466 elf_elfheader (obfd)->e_flags = in_flags; 3467 3468 if (bfd_get_arch (obfd) == bfd_get_arch (ibfd) 3469 && bfd_get_arch_info (obfd)->the_default) 3470 return bfd_set_arch_mach (obfd, bfd_get_arch (ibfd), 3471 bfd_get_mach (ibfd)); 3472 3473 return TRUE; 3474 } 3475 3476 /* Check flag compatibility. */ 3477 if (in_flags == out_flags) 3478 return TRUE; 3479 3480 if ((in_flags & EF_M32R_ARCH) != (out_flags & EF_M32R_ARCH)) 3481 { 3482 if ( ((in_flags & EF_M32R_ARCH) != E_M32R_ARCH) 3483 || ((out_flags & EF_M32R_ARCH) == E_M32R_ARCH) 3484 || ((in_flags & EF_M32R_ARCH) == E_M32R2_ARCH)) 3485 { 3486 _bfd_error_handler 3487 (_("%pB: instruction set mismatch with previous modules"), ibfd); 3488 3489 bfd_set_error (bfd_error_bad_value); 3490 return FALSE; 3491 } 3492 } 3493 3494 return TRUE; 3495 } 3496 3497 /* Display the flags field. */ 3498 3499 static bfd_boolean 3500 m32r_elf_print_private_bfd_data (bfd *abfd, void * ptr) 3501 { 3502 FILE * file = (FILE *) ptr; 3503 3504 BFD_ASSERT (abfd != NULL && ptr != NULL); 3505 3506 _bfd_elf_print_private_bfd_data (abfd, ptr); 3507 3508 fprintf (file, _("private flags = %lx"), elf_elfheader (abfd)->e_flags); 3509 3510 switch (elf_elfheader (abfd)->e_flags & EF_M32R_ARCH) 3511 { 3512 default: 3513 case E_M32R_ARCH: fprintf (file, _(": m32r instructions")); break; 3514 case E_M32RX_ARCH: fprintf (file, _(": m32rx instructions")); break; 3515 case E_M32R2_ARCH: fprintf (file, _(": m32r2 instructions")); break; 3516 } 3517 3518 fputc ('\n', file); 3519 3520 return TRUE; 3521 } 3522 3523 static asection * 3524 m32r_elf_gc_mark_hook (asection *sec, 3525 struct bfd_link_info *info, 3526 Elf_Internal_Rela *rel, 3527 struct elf_link_hash_entry *h, 3528 Elf_Internal_Sym *sym) 3529 { 3530 if (h != NULL) 3531 switch (ELF32_R_TYPE (rel->r_info)) 3532 { 3533 case R_M32R_GNU_VTINHERIT: 3534 case R_M32R_GNU_VTENTRY: 3535 case R_M32R_RELA_GNU_VTINHERIT: 3536 case R_M32R_RELA_GNU_VTENTRY: 3537 return NULL; 3538 } 3539 3540 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym); 3541 } 3542 3543 /* Look through the relocs for a section during the first phase. 3544 Since we don't do .gots or .plts, we just need to consider the 3545 virtual table relocs for gc. */ 3546 3547 static bfd_boolean 3548 m32r_elf_check_relocs (bfd *abfd, 3549 struct bfd_link_info *info, 3550 asection *sec, 3551 const Elf_Internal_Rela *relocs) 3552 { 3553 Elf_Internal_Shdr *symtab_hdr; 3554 struct elf_link_hash_entry **sym_hashes; 3555 const Elf_Internal_Rela *rel; 3556 const Elf_Internal_Rela *rel_end; 3557 struct elf_m32r_link_hash_table *htab; 3558 bfd *dynobj; 3559 asection *sreloc; 3560 3561 if (bfd_link_relocatable (info)) 3562 return TRUE; 3563 3564 /* Don't do anything special with non-loaded, non-alloced sections. 3565 In particular, any relocs in such sections should not affect GOT 3566 and PLT reference counting (ie. we don't allow them to create GOT 3567 or PLT entries), there's no possibility or desire to optimize TLS 3568 relocs, and there's not much point in propagating relocs to shared 3569 libs that the dynamic linker won't relocate. */ 3570 if ((sec->flags & SEC_ALLOC) == 0) 3571 return TRUE; 3572 3573 sreloc = NULL; 3574 symtab_hdr = &elf_tdata (abfd)->symtab_hdr; 3575 sym_hashes = elf_sym_hashes (abfd); 3576 3577 htab = m32r_elf_hash_table (info); 3578 if (htab == NULL) 3579 return FALSE; 3580 3581 dynobj = htab->root.dynobj; 3582 3583 rel_end = relocs + sec->reloc_count; 3584 for (rel = relocs; rel < rel_end; rel++) 3585 { 3586 int r_type; 3587 struct elf_link_hash_entry *h; 3588 unsigned long r_symndx; 3589 3590 r_symndx = ELF32_R_SYM (rel->r_info); 3591 r_type = ELF32_R_TYPE (rel->r_info); 3592 if (r_symndx < symtab_hdr->sh_info) 3593 h = NULL; 3594 else 3595 { 3596 h = sym_hashes[r_symndx - symtab_hdr->sh_info]; 3597 while (h->root.type == bfd_link_hash_indirect 3598 || h->root.type == bfd_link_hash_warning) 3599 h = (struct elf_link_hash_entry *) h->root.u.i.link; 3600 } 3601 3602 /* Some relocs require a global offset table. */ 3603 if (htab->root.sgot == NULL) 3604 { 3605 switch (r_type) 3606 { 3607 case R_M32R_GOT16_HI_ULO: 3608 case R_M32R_GOT16_HI_SLO: 3609 case R_M32R_GOTOFF: 3610 case R_M32R_GOTOFF_HI_ULO: 3611 case R_M32R_GOTOFF_HI_SLO: 3612 case R_M32R_GOTOFF_LO: 3613 case R_M32R_GOT16_LO: 3614 case R_M32R_GOTPC24: 3615 case R_M32R_GOTPC_HI_ULO: 3616 case R_M32R_GOTPC_HI_SLO: 3617 case R_M32R_GOTPC_LO: 3618 case R_M32R_GOT24: 3619 if (dynobj == NULL) 3620 htab->root.dynobj = dynobj = abfd; 3621 if (!_bfd_elf_create_got_section (dynobj, info)) 3622 return FALSE; 3623 break; 3624 3625 default: 3626 break; 3627 } 3628 } 3629 3630 switch (r_type) 3631 { 3632 case R_M32R_GOT16_HI_ULO: 3633 case R_M32R_GOT16_HI_SLO: 3634 case R_M32R_GOT16_LO: 3635 case R_M32R_GOT24: 3636 3637 if (h != NULL) 3638 h->got.refcount += 1; 3639 else 3640 { 3641 bfd_signed_vma *local_got_refcounts; 3642 3643 /* This is a global offset table entry for a local 3644 symbol. */ 3645 local_got_refcounts = elf_local_got_refcounts (abfd); 3646 if (local_got_refcounts == NULL) 3647 { 3648 bfd_size_type size; 3649 3650 size = symtab_hdr->sh_info; 3651 size *= sizeof (bfd_signed_vma); 3652 local_got_refcounts = bfd_zalloc (abfd, size); 3653 if (local_got_refcounts == NULL) 3654 return FALSE; 3655 elf_local_got_refcounts (abfd) = local_got_refcounts; 3656 } 3657 local_got_refcounts[r_symndx] += 1; 3658 } 3659 break; 3660 3661 case R_M32R_26_PLTREL: 3662 /* This symbol requires a procedure linkage table entry. We 3663 actually build the entry in adjust_dynamic_symbol, 3664 because this might be a case of linking PIC code without 3665 linking in any dynamic objects, in which case we don't 3666 need to generate a procedure linkage table after all. */ 3667 3668 /* If this is a local symbol, we resolve it directly without 3669 creating a procedure linkage table entry. */ 3670 if (h == NULL) 3671 continue; 3672 3673 if (h->forced_local) 3674 break; 3675 3676 h->needs_plt = 1; 3677 h->plt.refcount += 1; 3678 break; 3679 3680 case R_M32R_16_RELA: 3681 case R_M32R_24_RELA: 3682 case R_M32R_32_RELA: 3683 case R_M32R_REL32: 3684 case R_M32R_HI16_ULO_RELA: 3685 case R_M32R_HI16_SLO_RELA: 3686 case R_M32R_LO16_RELA: 3687 case R_M32R_SDA16_RELA: 3688 case R_M32R_10_PCREL_RELA: 3689 case R_M32R_18_PCREL_RELA: 3690 case R_M32R_26_PCREL_RELA: 3691 3692 if (h != NULL && !bfd_link_pic (info)) 3693 { 3694 h->non_got_ref = 1; 3695 h->plt.refcount += 1; 3696 } 3697 3698 /* If we are creating a shared library, and this is a reloc 3699 against a global symbol, or a non PC relative reloc 3700 against a local symbol, then we need to copy the reloc 3701 into the shared library. However, if we are linking with 3702 -Bsymbolic, we do not need to copy a reloc against a 3703 global symbol which is defined in an object we are 3704 including in the link (i.e., DEF_REGULAR is set). At 3705 this point we have not seen all the input files, so it is 3706 possible that DEF_REGULAR is not set now but will be set 3707 later (it is never cleared). We account for that 3708 possibility below by storing information in the 3709 dyn_relocs field of the hash table entry. A similar 3710 situation occurs when creating shared libraries and symbol 3711 visibility changes render the symbol local. 3712 3713 If on the other hand, we are creating an executable, we 3714 may need to keep relocations for symbols satisfied by a 3715 dynamic library if we manage to avoid copy relocs for the 3716 symbol. */ 3717 if ((bfd_link_pic (info) 3718 && (sec->flags & SEC_ALLOC) != 0 3719 && (( r_type != R_M32R_26_PCREL_RELA 3720 && r_type != R_M32R_18_PCREL_RELA 3721 && r_type != R_M32R_10_PCREL_RELA 3722 && r_type != R_M32R_REL32) 3723 || (h != NULL 3724 && (! info->symbolic 3725 || h->root.type == bfd_link_hash_defweak 3726 || !h->def_regular)))) 3727 || (!bfd_link_pic (info) 3728 && (sec->flags & SEC_ALLOC) != 0 3729 && h != NULL 3730 && (h->root.type == bfd_link_hash_defweak 3731 || !h->def_regular))) 3732 { 3733 struct elf_dyn_relocs *p; 3734 struct elf_dyn_relocs **head; 3735 3736 if (dynobj == NULL) 3737 htab->root.dynobj = dynobj = abfd; 3738 3739 /* When creating a shared object, we must copy these 3740 relocs into the output file. We create a reloc 3741 section in dynobj and make room for the reloc. */ 3742 if (sreloc == NULL) 3743 { 3744 sreloc = _bfd_elf_make_dynamic_reloc_section 3745 (sec, dynobj, 2, abfd, /*rela?*/ TRUE); 3746 3747 if (sreloc == NULL) 3748 return FALSE; 3749 } 3750 3751 /* If this is a global symbol, we count the number of 3752 relocations we need for this symbol. */ 3753 if (h != NULL) 3754 head = &((struct elf_m32r_link_hash_entry *) h)->dyn_relocs; 3755 else 3756 { 3757 /* Track dynamic relocs needed for local syms too. */ 3758 asection *s; 3759 void *vpp; 3760 Elf_Internal_Sym *isym; 3761 3762 isym = bfd_sym_from_r_symndx (&htab->sym_cache, 3763 abfd, r_symndx); 3764 if (isym == NULL) 3765 return FALSE; 3766 3767 s = bfd_section_from_elf_index (abfd, isym->st_shndx); 3768 if (s == NULL) 3769 s = sec; 3770 3771 vpp = &elf_section_data (s)->local_dynrel; 3772 head = (struct elf_dyn_relocs **) vpp; 3773 } 3774 3775 p = *head; 3776 if (p == NULL || p->sec != sec) 3777 { 3778 bfd_size_type amt = sizeof (*p); 3779 3780 p = bfd_alloc (dynobj, amt); 3781 if (p == NULL) 3782 return FALSE; 3783 p->next = *head; 3784 *head = p; 3785 p->sec = sec; 3786 p->count = 0; 3787 p->pc_count = 0; 3788 } 3789 3790 p->count += 1; 3791 if ( ELF32_R_TYPE (rel->r_info) == R_M32R_26_PCREL_RELA 3792 || ELF32_R_TYPE (rel->r_info) == R_M32R_18_PCREL_RELA 3793 || ELF32_R_TYPE (rel->r_info) == R_M32R_10_PCREL_RELA 3794 || ELF32_R_TYPE (rel->r_info) == R_M32R_REL32) 3795 p->pc_count += 1; 3796 } 3797 break; 3798 3799 /* This relocation describes the C++ object vtable hierarchy. 3800 Reconstruct it for later use during GC. */ 3801 case R_M32R_RELA_GNU_VTINHERIT: 3802 case R_M32R_GNU_VTINHERIT: 3803 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset)) 3804 return FALSE; 3805 break; 3806 3807 /* This relocation describes which C++ vtable entries are actually 3808 used. Record for later use during GC. */ 3809 case R_M32R_GNU_VTENTRY: 3810 if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_offset)) 3811 return FALSE; 3812 break; 3813 case R_M32R_RELA_GNU_VTENTRY: 3814 if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend)) 3815 return FALSE; 3816 break; 3817 } 3818 } 3819 3820 return TRUE; 3821 } 3822 3823 static const struct bfd_elf_special_section m32r_elf_special_sections[] = 3824 { 3825 { STRING_COMMA_LEN (".sbss"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE }, 3826 { STRING_COMMA_LEN (".sdata"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, 3827 { NULL, 0, 0, 0, 0 } 3828 }; 3829 3830 static enum elf_reloc_type_class 3831 m32r_elf_reloc_type_class (const struct bfd_link_info *info ATTRIBUTE_UNUSED, 3832 const asection *rel_sec ATTRIBUTE_UNUSED, 3833 const Elf_Internal_Rela *rela) 3834 { 3835 switch ((int) ELF32_R_TYPE (rela->r_info)) 3836 { 3837 case R_M32R_RELATIVE: return reloc_class_relative; 3838 case R_M32R_JMP_SLOT: return reloc_class_plt; 3839 case R_M32R_COPY: return reloc_class_copy; 3840 default: return reloc_class_normal; 3841 } 3842 } 3843 3844 #define ELF_ARCH bfd_arch_m32r 3845 #define ELF_TARGET_ID M32R_ELF_DATA 3846 #define ELF_MACHINE_CODE EM_M32R 3847 #define ELF_MACHINE_ALT1 EM_CYGNUS_M32R 3848 #define ELF_MAXPAGESIZE 0x1 /* Explicitly requested by Mitsubishi. */ 3849 3850 #define TARGET_BIG_SYM m32r_elf32_vec 3851 #define TARGET_BIG_NAME "elf32-m32r" 3852 #define TARGET_LITTLE_SYM m32r_elf32_le_vec 3853 #define TARGET_LITTLE_NAME "elf32-m32rle" 3854 3855 #define elf_info_to_howto m32r_info_to_howto 3856 #define elf_info_to_howto_rel m32r_info_to_howto_rel 3857 #define elf_backend_section_from_bfd_section _bfd_m32r_elf_section_from_bfd_section 3858 #define elf_backend_symbol_processing _bfd_m32r_elf_symbol_processing 3859 #define elf_backend_add_symbol_hook m32r_elf_add_symbol_hook 3860 #define elf_backend_relocate_section m32r_elf_relocate_section 3861 #define elf_backend_gc_mark_hook m32r_elf_gc_mark_hook 3862 #define elf_backend_check_relocs m32r_elf_check_relocs 3863 3864 #define elf_backend_create_dynamic_sections m32r_elf_create_dynamic_sections 3865 #define bfd_elf32_bfd_link_hash_table_create m32r_elf_link_hash_table_create 3866 #define elf_backend_size_dynamic_sections m32r_elf_size_dynamic_sections 3867 #define elf_backend_omit_section_dynsym _bfd_elf_omit_section_dynsym_all 3868 #define elf_backend_finish_dynamic_sections m32r_elf_finish_dynamic_sections 3869 #define elf_backend_adjust_dynamic_symbol m32r_elf_adjust_dynamic_symbol 3870 #define elf_backend_finish_dynamic_symbol m32r_elf_finish_dynamic_symbol 3871 #define elf_backend_reloc_type_class m32r_elf_reloc_type_class 3872 #define elf_backend_copy_indirect_symbol m32r_elf_copy_indirect_symbol 3873 3874 #define elf_backend_can_gc_sections 1 3875 /*#if !USE_REL 3876 #define elf_backend_rela_normal 1 3877 #endif*/ 3878 #define elf_backend_can_refcount 1 3879 #define elf_backend_want_got_plt 1 3880 #define elf_backend_plt_readonly 1 3881 #define elf_backend_want_plt_sym 0 3882 #define elf_backend_got_header_size 12 3883 #define elf_backend_dtrel_excludes_plt 1 3884 3885 #define elf_backend_may_use_rel_p 1 3886 #ifdef USE_M32R_OLD_RELOC 3887 #define elf_backend_default_use_rela_p 0 3888 #define elf_backend_may_use_rela_p 0 3889 #else 3890 #define elf_backend_default_use_rela_p 1 3891 #define elf_backend_may_use_rela_p 1 3892 #endif 3893 3894 #define elf_backend_object_p m32r_elf_object_p 3895 #define elf_backend_final_write_processing m32r_elf_final_write_processing 3896 #define bfd_elf32_bfd_merge_private_bfd_data m32r_elf_merge_private_bfd_data 3897 #define bfd_elf32_bfd_set_private_flags m32r_elf_set_private_flags 3898 #define bfd_elf32_bfd_print_private_bfd_data m32r_elf_print_private_bfd_data 3899 #define elf_backend_special_sections m32r_elf_special_sections 3900 3901 #define elf_backend_linux_prpsinfo32_ugid16 TRUE 3902 3903 #include "elf32-target.h" 3904 3905 #undef ELF_MAXPAGESIZE 3906 #define ELF_MAXPAGESIZE 0x1000 3907 3908 #undef TARGET_BIG_SYM 3909 #define TARGET_BIG_SYM m32r_elf32_linux_vec 3910 #undef TARGET_BIG_NAME 3911 #define TARGET_BIG_NAME "elf32-m32r-linux" 3912 #undef TARGET_LITTLE_SYM 3913 #define TARGET_LITTLE_SYM m32r_elf32_linux_le_vec 3914 #undef TARGET_LITTLE_NAME 3915 #define TARGET_LITTLE_NAME "elf32-m32rle-linux" 3916 #undef elf32_bed 3917 #define elf32_bed elf32_m32r_lin_bed 3918 3919 #include "elf32-target.h" 3920