1 /* M32R-specific support for 32-bit ELF. 2 Copyright 1996-2013 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 2, /* size (0 = byte, 1 = short, 2 = long) */ 478 32, /* bitsize */ 479 FALSE, /* pc_relative */ 480 0, /* bitpos */ 481 complain_overflow_bitfield, /* complain_on_overflow */ 482 bfd_elf_generic_reloc, /* special_function */ 483 "R_M32R_NONE", /* name */ 484 FALSE, /* partial_inplace */ 485 0, /* src_mask */ 486 0, /* dst_mask */ 487 FALSE), /* pcrel_offset */ 488 489 /* A 16 bit absolute relocation. */ 490 HOWTO (R_M32R_16, /* type */ 491 0, /* rightshift */ 492 1, /* size (0 = byte, 1 = short, 2 = long) */ 493 16, /* bitsize */ 494 FALSE, /* pc_relative */ 495 0, /* bitpos */ 496 complain_overflow_bitfield, /* complain_on_overflow */ 497 m32r_elf_generic_reloc,/* special_function */ 498 "R_M32R_16", /* name */ 499 TRUE, /* partial_inplace */ 500 0xffff, /* src_mask */ 501 0xffff, /* dst_mask */ 502 FALSE), /* pcrel_offset */ 503 504 /* A 32 bit absolute relocation. */ 505 HOWTO (R_M32R_32, /* type */ 506 0, /* rightshift */ 507 2, /* size (0 = byte, 1 = short, 2 = long) */ 508 32, /* bitsize */ 509 FALSE, /* pc_relative */ 510 0, /* bitpos */ 511 complain_overflow_bitfield, /* complain_on_overflow */ 512 m32r_elf_generic_reloc,/* special_function */ 513 "R_M32R_32", /* name */ 514 TRUE, /* partial_inplace */ 515 0xffffffff, /* src_mask */ 516 0xffffffff, /* dst_mask */ 517 FALSE), /* pcrel_offset */ 518 519 /* A 24 bit address. */ 520 HOWTO (R_M32R_24, /* type */ 521 0, /* rightshift */ 522 2, /* size (0 = byte, 1 = short, 2 = long) */ 523 24, /* bitsize */ 524 FALSE, /* pc_relative */ 525 0, /* bitpos */ 526 complain_overflow_unsigned, /* complain_on_overflow */ 527 m32r_elf_generic_reloc,/* special_function */ 528 "R_M32R_24", /* name */ 529 TRUE, /* partial_inplace */ 530 0xffffff, /* src_mask */ 531 0xffffff, /* dst_mask */ 532 FALSE), /* pcrel_offset */ 533 534 /* An PC Relative 10-bit relocation, shifted by 2. 535 This reloc is complicated because relocations are relative to pc & -4. 536 i.e. branches in the right insn slot use the address of the left insn 537 slot for pc. */ 538 /* ??? It's not clear whether this should have partial_inplace set or not. 539 Branch relaxing in the assembler can store the addend in the insn, 540 and if bfd_install_relocation gets called the addend may get added 541 again. */ 542 HOWTO (R_M32R_10_PCREL, /* type */ 543 2, /* rightshift */ 544 1, /* size (0 = byte, 1 = short, 2 = long) */ 545 10, /* bitsize */ 546 TRUE, /* pc_relative */ 547 0, /* bitpos */ 548 complain_overflow_signed, /* complain_on_overflow */ 549 m32r_elf_10_pcrel_reloc, /* special_function */ 550 "R_M32R_10_PCREL", /* name */ 551 FALSE, /* partial_inplace */ 552 0xff, /* src_mask */ 553 0xff, /* dst_mask */ 554 TRUE), /* pcrel_offset */ 555 556 /* A relative 18 bit relocation, right shifted by 2. */ 557 HOWTO (R_M32R_18_PCREL, /* type */ 558 2, /* rightshift */ 559 2, /* size (0 = byte, 1 = short, 2 = long) */ 560 16, /* bitsize */ 561 TRUE, /* pc_relative */ 562 0, /* bitpos */ 563 complain_overflow_signed, /* complain_on_overflow */ 564 bfd_elf_generic_reloc, /* special_function */ 565 "R_M32R_18_PCREL", /* name */ 566 FALSE, /* partial_inplace */ 567 0xffff, /* src_mask */ 568 0xffff, /* dst_mask */ 569 TRUE), /* pcrel_offset */ 570 571 /* A relative 26 bit relocation, right shifted by 2. */ 572 /* ??? It's not clear whether this should have partial_inplace set or not. 573 Branch relaxing in the assembler can store the addend in the insn, 574 and if bfd_install_relocation gets called the addend may get added 575 again. */ 576 HOWTO (R_M32R_26_PCREL, /* type */ 577 2, /* rightshift */ 578 2, /* size (0 = byte, 1 = short, 2 = long) */ 579 26, /* bitsize */ 580 TRUE, /* pc_relative */ 581 0, /* bitpos */ 582 complain_overflow_signed, /* complain_on_overflow */ 583 bfd_elf_generic_reloc, /* special_function */ 584 "R_M32R_26_PCREL", /* name */ 585 FALSE, /* partial_inplace */ 586 0xffffff, /* src_mask */ 587 0xffffff, /* dst_mask */ 588 TRUE), /* pcrel_offset */ 589 590 /* High 16 bits of address when lower 16 is or'd in. */ 591 HOWTO (R_M32R_HI16_ULO, /* type */ 592 16, /* rightshift */ 593 2, /* size (0 = byte, 1 = short, 2 = long) */ 594 16, /* bitsize */ 595 FALSE, /* pc_relative */ 596 0, /* bitpos */ 597 complain_overflow_dont, /* complain_on_overflow */ 598 m32r_elf_hi16_reloc, /* special_function */ 599 "R_M32R_HI16_ULO", /* name */ 600 TRUE, /* partial_inplace */ 601 0x0000ffff, /* src_mask */ 602 0x0000ffff, /* dst_mask */ 603 FALSE), /* pcrel_offset */ 604 605 /* High 16 bits of address when lower 16 is added in. */ 606 HOWTO (R_M32R_HI16_SLO, /* type */ 607 16, /* rightshift */ 608 2, /* size (0 = byte, 1 = short, 2 = long) */ 609 16, /* bitsize */ 610 FALSE, /* pc_relative */ 611 0, /* bitpos */ 612 complain_overflow_dont, /* complain_on_overflow */ 613 m32r_elf_hi16_reloc, /* special_function */ 614 "R_M32R_HI16_SLO", /* name */ 615 TRUE, /* partial_inplace */ 616 0x0000ffff, /* src_mask */ 617 0x0000ffff, /* dst_mask */ 618 FALSE), /* pcrel_offset */ 619 620 /* Lower 16 bits of address. */ 621 HOWTO (R_M32R_LO16, /* type */ 622 0, /* rightshift */ 623 2, /* size (0 = byte, 1 = short, 2 = long) */ 624 16, /* bitsize */ 625 FALSE, /* pc_relative */ 626 0, /* bitpos */ 627 complain_overflow_dont, /* complain_on_overflow */ 628 m32r_elf_lo16_reloc, /* special_function */ 629 "R_M32R_LO16", /* name */ 630 TRUE, /* partial_inplace */ 631 0x0000ffff, /* src_mask */ 632 0x0000ffff, /* dst_mask */ 633 FALSE), /* pcrel_offset */ 634 635 /* Small data area 16 bits offset. */ 636 HOWTO (R_M32R_SDA16, /* type */ 637 0, /* rightshift */ 638 2, /* size (0 = byte, 1 = short, 2 = long) */ 639 16, /* bitsize */ 640 FALSE, /* pc_relative */ 641 0, /* bitpos */ 642 complain_overflow_signed, /* complain_on_overflow */ 643 m32r_elf_sda16_reloc, /* special_function */ 644 "R_M32R_SDA16", /* name */ 645 TRUE, /* partial_inplace */ /* FIXME: correct? */ 646 0x0000ffff, /* src_mask */ 647 0x0000ffff, /* dst_mask */ 648 FALSE), /* pcrel_offset */ 649 650 /* GNU extension to record C++ vtable hierarchy. */ 651 HOWTO (R_M32R_GNU_VTINHERIT, /* type */ 652 0, /* rightshift */ 653 2, /* size (0 = byte, 1 = short, 2 = long) */ 654 0, /* bitsize */ 655 FALSE, /* pc_relative */ 656 0, /* bitpos */ 657 complain_overflow_dont, /* complain_on_overflow */ 658 NULL, /* special_function */ 659 "R_M32R_GNU_VTINHERIT", /* name */ 660 FALSE, /* partial_inplace */ 661 0, /* src_mask */ 662 0, /* dst_mask */ 663 FALSE), /* pcrel_offset */ 664 665 /* GNU extension to record C++ vtable member usage. */ 666 HOWTO (R_M32R_GNU_VTENTRY, /* type */ 667 0, /* rightshift */ 668 2, /* size (0 = byte, 1 = short, 2 = long) */ 669 0, /* bitsize */ 670 FALSE, /* pc_relative */ 671 0, /* bitpos */ 672 complain_overflow_dont, /* complain_on_overflow */ 673 _bfd_elf_rel_vtable_reloc_fn, /* special_function */ 674 "R_M32R_GNU_VTENTRY", /* name */ 675 FALSE, /* partial_inplace */ 676 0, /* src_mask */ 677 0, /* dst_mask */ 678 FALSE), /* pcrel_offset */ 679 680 EMPTY_HOWTO (13), 681 EMPTY_HOWTO (14), 682 EMPTY_HOWTO (15), 683 EMPTY_HOWTO (16), 684 EMPTY_HOWTO (17), 685 EMPTY_HOWTO (18), 686 EMPTY_HOWTO (19), 687 EMPTY_HOWTO (20), 688 EMPTY_HOWTO (21), 689 EMPTY_HOWTO (22), 690 EMPTY_HOWTO (23), 691 EMPTY_HOWTO (24), 692 EMPTY_HOWTO (25), 693 EMPTY_HOWTO (26), 694 EMPTY_HOWTO (27), 695 EMPTY_HOWTO (28), 696 EMPTY_HOWTO (29), 697 EMPTY_HOWTO (30), 698 EMPTY_HOWTO (31), 699 EMPTY_HOWTO (32), 700 701 /* A 16 bit absolute relocation. */ 702 HOWTO (R_M32R_16_RELA, /* type */ 703 0, /* rightshift */ 704 1, /* size (0 = byte, 1 = short, 2 = long) */ 705 16, /* bitsize */ 706 FALSE, /* pc_relative */ 707 0, /* bitpos */ 708 complain_overflow_bitfield, /* complain_on_overflow */ 709 bfd_elf_generic_reloc, /* special_function */ 710 "R_M32R_16_RELA", /* name */ 711 FALSE, /* partial_inplace */ 712 0xffff, /* src_mask */ 713 0xffff, /* dst_mask */ 714 FALSE), /* pcrel_offset */ 715 716 /* A 32 bit absolute relocation. */ 717 HOWTO (R_M32R_32_RELA, /* type */ 718 0, /* rightshift */ 719 2, /* size (0 = byte, 1 = short, 2 = long) */ 720 32, /* bitsize */ 721 FALSE, /* pc_relative */ 722 0, /* bitpos */ 723 complain_overflow_bitfield, /* complain_on_overflow */ 724 bfd_elf_generic_reloc,/* special_function */ 725 "R_M32R_32_RELA", /* name */ 726 FALSE, /* partial_inplace */ 727 0xffffffff, /* src_mask */ 728 0xffffffff, /* dst_mask */ 729 FALSE), /* pcrel_offset */ 730 731 /* A 24 bit address. */ 732 HOWTO (R_M32R_24_RELA, /* type */ 733 0, /* rightshift */ 734 2, /* size (0 = byte, 1 = short, 2 = long) */ 735 24, /* bitsize */ 736 FALSE, /* pc_relative */ 737 0, /* bitpos */ 738 complain_overflow_unsigned, /* complain_on_overflow */ 739 bfd_elf_generic_reloc,/* special_function */ 740 "R_M32R_24_RELA", /* name */ 741 FALSE, /* partial_inplace */ 742 0xffffff, /* src_mask */ 743 0xffffff, /* dst_mask */ 744 FALSE), /* pcrel_offset */ 745 746 HOWTO (R_M32R_10_PCREL_RELA, /* type */ 747 2, /* rightshift */ 748 1, /* size (0 = byte, 1 = short, 2 = long) */ 749 10, /* bitsize */ 750 TRUE, /* pc_relative */ 751 0, /* bitpos */ 752 complain_overflow_signed, /* complain_on_overflow */ 753 m32r_elf_10_pcrel_reloc, /* special_function */ 754 "R_M32R_10_PCREL_RELA",/* name */ 755 FALSE, /* partial_inplace */ 756 0xff, /* src_mask */ 757 0xff, /* dst_mask */ 758 TRUE), /* pcrel_offset */ 759 760 /* A relative 18 bit relocation, right shifted by 2. */ 761 HOWTO (R_M32R_18_PCREL_RELA, /* type */ 762 2, /* rightshift */ 763 2, /* size (0 = byte, 1 = short, 2 = long) */ 764 16, /* bitsize */ 765 TRUE, /* pc_relative */ 766 0, /* bitpos */ 767 complain_overflow_signed, /* complain_on_overflow */ 768 bfd_elf_generic_reloc, /* special_function */ 769 "R_M32R_18_PCREL_RELA",/* name */ 770 FALSE, /* partial_inplace */ 771 0xffff, /* src_mask */ 772 0xffff, /* dst_mask */ 773 TRUE), /* pcrel_offset */ 774 775 /* A relative 26 bit relocation, right shifted by 2. */ 776 HOWTO (R_M32R_26_PCREL_RELA, /* type */ 777 2, /* rightshift */ 778 2, /* size (0 = byte, 1 = short, 2 = long) */ 779 26, /* bitsize */ 780 TRUE, /* pc_relative */ 781 0, /* bitpos */ 782 complain_overflow_signed, /* complain_on_overflow */ 783 bfd_elf_generic_reloc, /* special_function */ 784 "R_M32R_26_PCREL_RELA",/* name */ 785 FALSE, /* partial_inplace */ 786 0xffffff, /* src_mask */ 787 0xffffff, /* dst_mask */ 788 TRUE), /* pcrel_offset */ 789 790 /* High 16 bits of address when lower 16 is or'd in. */ 791 HOWTO (R_M32R_HI16_ULO_RELA, /* type */ 792 16, /* rightshift */ 793 2, /* size (0 = byte, 1 = short, 2 = long) */ 794 16, /* bitsize */ 795 FALSE, /* pc_relative */ 796 0, /* bitpos */ 797 complain_overflow_dont, /* complain_on_overflow */ 798 bfd_elf_generic_reloc, /* special_function */ 799 "R_M32R_HI16_ULO_RELA",/* name */ 800 FALSE, /* partial_inplace */ 801 0x0000ffff, /* src_mask */ 802 0x0000ffff, /* dst_mask */ 803 FALSE), /* pcrel_offset */ 804 805 /* High 16 bits of address when lower 16 is added in. */ 806 HOWTO (R_M32R_HI16_SLO_RELA, /* type */ 807 16, /* rightshift */ 808 2, /* size (0 = byte, 1 = short, 2 = long) */ 809 16, /* bitsize */ 810 FALSE, /* pc_relative */ 811 0, /* bitpos */ 812 complain_overflow_dont, /* complain_on_overflow */ 813 bfd_elf_generic_reloc, /* special_function */ 814 "R_M32R_HI16_SLO_RELA",/* name */ 815 FALSE, /* partial_inplace */ 816 0x0000ffff, /* src_mask */ 817 0x0000ffff, /* dst_mask */ 818 FALSE), /* pcrel_offset */ 819 820 /* Lower 16 bits of address. */ 821 HOWTO (R_M32R_LO16_RELA, /* type */ 822 0, /* rightshift */ 823 2, /* size (0 = byte, 1 = short, 2 = long) */ 824 16, /* bitsize */ 825 FALSE, /* pc_relative */ 826 0, /* bitpos */ 827 complain_overflow_dont, /* complain_on_overflow */ 828 bfd_elf_generic_reloc, /* special_function */ 829 "R_M32R_LO16_RELA", /* name */ 830 FALSE, /* partial_inplace */ 831 0x0000ffff, /* src_mask */ 832 0x0000ffff, /* dst_mask */ 833 FALSE), /* pcrel_offset */ 834 835 /* Small data area 16 bits offset. */ 836 HOWTO (R_M32R_SDA16_RELA, /* type */ 837 0, /* rightshift */ 838 2, /* size (0 = byte, 1 = short, 2 = long) */ 839 16, /* bitsize */ 840 FALSE, /* pc_relative */ 841 0, /* bitpos */ 842 complain_overflow_signed, /* complain_on_overflow */ 843 bfd_elf_generic_reloc, /* special_function */ 844 "R_M32R_SDA16_RELA", /* name */ 845 TRUE, /* partial_inplace */ /* FIXME: correct? */ 846 0x0000ffff, /* src_mask */ 847 0x0000ffff, /* dst_mask */ 848 FALSE), /* pcrel_offset */ 849 850 /* GNU extension to record C++ vtable hierarchy. */ 851 HOWTO (R_M32R_RELA_GNU_VTINHERIT, /* type */ 852 0, /* rightshift */ 853 2, /* size (0 = byte, 1 = short, 2 = long) */ 854 0, /* bitsize */ 855 FALSE, /* pc_relative */ 856 0, /* bitpos */ 857 complain_overflow_dont, /* complain_on_overflow */ 858 NULL, /* special_function */ 859 "R_M32R_RELA_GNU_VTINHERIT", /* name */ 860 FALSE, /* partial_inplace */ 861 0, /* src_mask */ 862 0, /* dst_mask */ 863 FALSE), /* pcrel_offset */ 864 865 /* GNU extension to record C++ vtable member usage. */ 866 HOWTO (R_M32R_RELA_GNU_VTENTRY, /* type */ 867 0, /* rightshift */ 868 2, /* size (0 = byte, 1 = short, 2 = long) */ 869 0, /* bitsize */ 870 FALSE, /* pc_relative */ 871 0, /* bitpos */ 872 complain_overflow_dont, /* complain_on_overflow */ 873 _bfd_elf_rel_vtable_reloc_fn, /* special_function */ 874 "R_M32R_RELA_GNU_VTENTRY", /* name */ 875 FALSE, /* partial_inplace */ 876 0, /* src_mask */ 877 0, /* dst_mask */ 878 FALSE), /* pcrel_offset */ 879 880 /* A 32 bit PC relative relocation. */ 881 HOWTO (R_M32R_REL32, /* type */ 882 0, /* rightshift */ 883 2, /* size (0 = byte, 1 = short, 2 = long) */ 884 32, /* bitsize */ 885 TRUE, /* pc_relative */ 886 0, /* bitpos */ 887 complain_overflow_bitfield, /* complain_on_overflow */ 888 bfd_elf_generic_reloc,/* special_function */ 889 "R_M32R_REL32", /* name */ 890 FALSE, /* partial_inplace */ 891 0xffffffff, /* src_mask */ 892 0xffffffff, /* dst_mask */ 893 TRUE), /* pcrel_offset */ 894 895 EMPTY_HOWTO (46), 896 EMPTY_HOWTO (47), 897 898 /* Like R_M32R_24, but referring to the GOT table entry for 899 the symbol. */ 900 HOWTO (R_M32R_GOT24, /* type */ 901 0, /* rightshift */ 902 2, /* size (0 = byte, 1 = short, 2 = long) */ 903 24, /* bitsize */ 904 FALSE, /* pc_relative */ 905 0, /* bitpos */ 906 complain_overflow_unsigned, /* complain_on_overflow */ 907 bfd_elf_generic_reloc, /* special_function */ 908 "R_M32R_GOT24", /* name */ 909 FALSE, /* partial_inplace */ 910 0xffffff, /* src_mask */ 911 0xffffff, /* dst_mask */ 912 FALSE), /* pcrel_offset */ 913 914 /* Like R_M32R_PCREL, but referring to the procedure linkage table 915 entry for the symbol. */ 916 HOWTO (R_M32R_26_PLTREL, /* type */ 917 2, /* rightshift */ 918 2, /* size (0 = byte, 1 = short, 2 = long) */ 919 24, /* bitsize */ 920 TRUE, /* pc_relative */ 921 0, /* bitpos */ 922 complain_overflow_signed, /* complain_on_overflow */ 923 bfd_elf_generic_reloc, /* special_function */ 924 "R_M32R_26_PLTREL", /* name */ 925 FALSE, /* partial_inplace */ 926 0xffffff, /* src_mask */ 927 0xffffff, /* dst_mask */ 928 TRUE), /* pcrel_offset */ 929 930 /* This is used only by the dynamic linker. The symbol should exist 931 both in the object being run and in some shared library. The 932 dynamic linker copies the data addressed by the symbol from the 933 shared library into the object, because the object being 934 run has to have the data at some particular address. */ 935 HOWTO (R_M32R_COPY, /* type */ 936 0, /* rightshift */ 937 2, /* size (0 = byte, 1 = short, 2 = long) */ 938 32, /* bitsize */ 939 FALSE, /* pc_relative */ 940 0, /* bitpos */ 941 complain_overflow_bitfield, /* complain_on_overflow */ 942 bfd_elf_generic_reloc, /* special_function */ 943 "R_M32R_COPY", /* name */ 944 FALSE, /* partial_inplace */ 945 0xffffffff, /* src_mask */ 946 0xffffffff, /* dst_mask */ 947 FALSE), /* pcrel_offset */ 948 949 /* Like R_M32R_24, but used when setting global offset table 950 entries. */ 951 HOWTO (R_M32R_GLOB_DAT, /* type */ 952 0, /* rightshift */ 953 2, /* size (0 = byte, 1 = short, 2 = long) */ 954 32, /* bitsize */ 955 FALSE, /* pc_relative */ 956 0, /* bitpos */ 957 complain_overflow_bitfield, /* complain_on_overflow */ 958 bfd_elf_generic_reloc, /* special_function */ 959 "R_M32R_GLOB_DAT", /* name */ 960 FALSE, /* partial_inplace */ 961 0xffffffff, /* src_mask */ 962 0xffffffff, /* dst_mask */ 963 FALSE), /* pcrel_offset */ 964 965 /* Marks a procedure linkage table entry for a symbol. */ 966 HOWTO (R_M32R_JMP_SLOT, /* type */ 967 0, /* rightshift */ 968 2, /* size (0 = byte, 1 = short, 2 = long) */ 969 32, /* bitsize */ 970 FALSE, /* pc_relative */ 971 0, /* bitpos */ 972 complain_overflow_bitfield, /* complain_on_overflow */ 973 bfd_elf_generic_reloc, /* special_function */ 974 "R_M32R_JMP_SLOT", /* name */ 975 FALSE, /* partial_inplace */ 976 0xffffffff, /* src_mask */ 977 0xffffffff, /* dst_mask */ 978 FALSE), /* pcrel_offset */ 979 980 /* Used only by the dynamic linker. When the object is run, this 981 longword is set to the load address of the object, plus the 982 addend. */ 983 HOWTO (R_M32R_RELATIVE, /* type */ 984 0, /* rightshift */ 985 2, /* size (0 = byte, 1 = short, 2 = long) */ 986 32, /* bitsize */ 987 FALSE, /* pc_relative */ 988 0, /* bitpos */ 989 complain_overflow_bitfield, /* complain_on_overflow */ 990 bfd_elf_generic_reloc, /* special_function */ 991 "R_M32R_RELATIVE", /* name */ 992 FALSE, /* partial_inplace */ 993 0xffffffff, /* src_mask */ 994 0xffffffff, /* dst_mask */ 995 FALSE), /* pcrel_offset */ 996 997 HOWTO (R_M32R_GOTOFF, /* type */ 998 0, /* rightshift */ 999 2, /* size (0 = byte, 1 = short, 2 = long) */ 1000 24, /* bitsize */ 1001 FALSE, /* pc_relative */ 1002 0, /* bitpos */ 1003 complain_overflow_bitfield, /* complain_on_overflow */ 1004 bfd_elf_generic_reloc, /* special_function */ 1005 "R_M32R_GOTOFF", /* name */ 1006 FALSE, /* partial_inplace */ 1007 0xffffff, /* src_mask */ 1008 0xffffff, /* dst_mask */ 1009 FALSE), /* pcrel_offset */ 1010 1011 /* An PC Relative 24-bit relocation used when setting PIC offset 1012 table register. */ 1013 HOWTO (R_M32R_GOTPC24, /* type */ 1014 0, /* rightshift */ 1015 2, /* size (0 = byte, 1 = short, 2 = long) */ 1016 24, /* bitsize */ 1017 TRUE, /* pc_relative */ 1018 0, /* bitpos */ 1019 complain_overflow_unsigned, /* complain_on_overflow */ 1020 bfd_elf_generic_reloc, /* special_function */ 1021 "R_M32R_GOTPC24", /* name */ 1022 FALSE, /* partial_inplace */ 1023 0xffffff, /* src_mask */ 1024 0xffffff, /* dst_mask */ 1025 TRUE), /* pcrel_offset */ 1026 1027 /* Like R_M32R_HI16_ULO, but referring to the GOT table entry for 1028 the symbol. */ 1029 HOWTO (R_M32R_GOT16_HI_ULO, /* type */ 1030 16, /* rightshift */ 1031 2, /* size (0 = byte, 1 = short, 2 = long) */ 1032 16, /* bitsize */ 1033 FALSE, /* pc_relative */ 1034 0, /* bitpos */ 1035 complain_overflow_dont, /* complain_on_overflow */ 1036 bfd_elf_generic_reloc, /* special_function */ 1037 "R_M32R_GOT16_HI_ULO", /* name */ 1038 FALSE, /* partial_inplace */ 1039 0x0000ffff, /* src_mask */ 1040 0x0000ffff, /* dst_mask */ 1041 FALSE), /* pcrel_offset */ 1042 1043 /* Like R_M32R_HI16_SLO, but referring to the GOT table entry for 1044 the symbol. */ 1045 HOWTO (R_M32R_GOT16_HI_SLO, /* type */ 1046 16, /* rightshift */ 1047 2, /* size (0 = byte, 1 = short, 2 = long) */ 1048 16, /* bitsize */ 1049 FALSE, /* pc_relative */ 1050 0, /* bitpos */ 1051 complain_overflow_dont, /* complain_on_overflow */ 1052 bfd_elf_generic_reloc, /* special_function */ 1053 "R_M32R_GOT16_HI_SLO", /* name */ 1054 FALSE, /* partial_inplace */ 1055 0x0000ffff, /* src_mask */ 1056 0x0000ffff, /* dst_mask */ 1057 FALSE), /* pcrel_offset */ 1058 1059 /* Like R_M32R_LO16, but referring to the GOT table entry for 1060 the symbol. */ 1061 HOWTO (R_M32R_GOT16_LO, /* type */ 1062 0, /* rightshift */ 1063 2, /* size (0 = byte, 1 = short, 2 = long) */ 1064 16, /* bitsize */ 1065 FALSE, /* pc_relative */ 1066 0, /* bitpos */ 1067 complain_overflow_dont, /* complain_on_overflow */ 1068 bfd_elf_generic_reloc, /* special_function */ 1069 "R_M32R_GOT16_LO", /* name */ 1070 FALSE, /* partial_inplace */ 1071 0x0000ffff, /* src_mask */ 1072 0x0000ffff, /* dst_mask */ 1073 FALSE), /* pcrel_offset */ 1074 1075 /* An PC Relative relocation used when setting PIC offset table register. 1076 Like R_M32R_HI16_ULO, but referring to the GOT table entry for 1077 the symbol. */ 1078 HOWTO (R_M32R_GOTPC_HI_ULO, /* type */ 1079 16, /* rightshift */ 1080 2, /* size (0 = byte, 1 = short, 2 = long) */ 1081 16, /* bitsize */ 1082 FALSE, /* pc_relative */ 1083 0, /* bitpos */ 1084 complain_overflow_dont, /* complain_on_overflow */ 1085 bfd_elf_generic_reloc, /* special_function */ 1086 "R_M32R_GOTPC_HI_ULO", /* name */ 1087 FALSE, /* partial_inplace */ 1088 0x0000ffff, /* src_mask */ 1089 0x0000ffff, /* dst_mask */ 1090 TRUE), /* pcrel_offset */ 1091 1092 /* An PC Relative relocation used when setting PIC offset table register. 1093 Like R_M32R_HI16_SLO, but referring to the GOT table entry for 1094 the symbol. */ 1095 HOWTO (R_M32R_GOTPC_HI_SLO, /* type */ 1096 16, /* rightshift */ 1097 2, /* size (0 = byte, 1 = short, 2 = long) */ 1098 16, /* bitsize */ 1099 FALSE, /* pc_relative */ 1100 0, /* bitpos */ 1101 complain_overflow_dont, /* complain_on_overflow */ 1102 bfd_elf_generic_reloc, /* special_function */ 1103 "R_M32R_GOTPC_HI_SLO", /* name */ 1104 FALSE, /* partial_inplace */ 1105 0x0000ffff, /* src_mask */ 1106 0x0000ffff, /* dst_mask */ 1107 TRUE), /* pcrel_offset */ 1108 1109 /* An PC Relative relocation used when setting PIC offset table register. 1110 Like R_M32R_LO16, but referring to the GOT table entry for 1111 the symbol. */ 1112 HOWTO (R_M32R_GOTPC_LO, /* type */ 1113 0, /* rightshift */ 1114 2, /* size (0 = byte, 1 = short, 2 = long) */ 1115 16, /* bitsize */ 1116 FALSE, /* pc_relative */ 1117 0, /* bitpos */ 1118 complain_overflow_dont, /* complain_on_overflow */ 1119 bfd_elf_generic_reloc, /* special_function */ 1120 "R_M32R_GOTPC_LO", /* name */ 1121 FALSE, /* partial_inplace */ 1122 0x0000ffff, /* src_mask */ 1123 0x0000ffff, /* dst_mask */ 1124 TRUE), /* pcrel_offset */ 1125 1126 HOWTO (R_M32R_GOTOFF_HI_ULO, /* type */ 1127 16, /* rightshift */ 1128 2, /* size (0 = byte, 1 = short, 2 = long) */ 1129 16, /* bitsize */ 1130 FALSE, /* pc_relative */ 1131 0, /* bitpos */ 1132 complain_overflow_dont, /* complain_on_overflow */ 1133 bfd_elf_generic_reloc, /* special_function */ 1134 "R_M32R_GOTOFF_HI_ULO",/* name */ 1135 FALSE, /* partial_inplace */ 1136 0x0000ffff, /* src_mask */ 1137 0x0000ffff, /* dst_mask */ 1138 FALSE), /* pcrel_offset */ 1139 1140 HOWTO (R_M32R_GOTOFF_HI_SLO, /* type */ 1141 16, /* rightshift */ 1142 2, /* size (0 = byte, 1 = short, 2 = long) */ 1143 16, /* bitsize */ 1144 FALSE, /* pc_relative */ 1145 0, /* bitpos */ 1146 complain_overflow_dont, /* complain_on_overflow */ 1147 bfd_elf_generic_reloc, /* special_function */ 1148 "R_M32R_GOTOFF_HI_SLO",/* name */ 1149 FALSE, /* partial_inplace */ 1150 0x0000ffff, /* src_mask */ 1151 0x0000ffff, /* dst_mask */ 1152 FALSE), /* pcrel_offset */ 1153 1154 HOWTO (R_M32R_GOTOFF_LO, /* type */ 1155 0, /* rightshift */ 1156 2, /* size (0 = byte, 1 = short, 2 = long) */ 1157 16, /* bitsize */ 1158 FALSE, /* pc_relative */ 1159 0, /* bitpos */ 1160 complain_overflow_dont, /* complain_on_overflow */ 1161 bfd_elf_generic_reloc, /* special_function */ 1162 "R_M32R_GOTOFF_LO", /* name */ 1163 FALSE, /* partial_inplace */ 1164 0x0000ffff, /* src_mask */ 1165 0x0000ffff, /* dst_mask */ 1166 FALSE), /* pcrel_offset */ 1167 }; 1168 1169 /* Map BFD reloc types to M32R ELF reloc types. */ 1170 1171 struct m32r_reloc_map 1172 { 1173 bfd_reloc_code_real_type bfd_reloc_val; 1174 unsigned char elf_reloc_val; 1175 }; 1176 1177 #ifdef USE_M32R_OLD_RELOC 1178 static const struct m32r_reloc_map m32r_reloc_map_old[] = 1179 { 1180 { BFD_RELOC_NONE, R_M32R_NONE }, 1181 { BFD_RELOC_16, R_M32R_16 }, 1182 { BFD_RELOC_32, R_M32R_32 }, 1183 { BFD_RELOC_M32R_24, R_M32R_24 }, 1184 { BFD_RELOC_M32R_10_PCREL, R_M32R_10_PCREL }, 1185 { BFD_RELOC_M32R_18_PCREL, R_M32R_18_PCREL }, 1186 { BFD_RELOC_M32R_26_PCREL, R_M32R_26_PCREL }, 1187 { BFD_RELOC_M32R_HI16_ULO, R_M32R_HI16_ULO }, 1188 { BFD_RELOC_M32R_HI16_SLO, R_M32R_HI16_SLO }, 1189 { BFD_RELOC_M32R_LO16, R_M32R_LO16 }, 1190 { BFD_RELOC_M32R_SDA16, R_M32R_SDA16 }, 1191 { BFD_RELOC_VTABLE_INHERIT, R_M32R_GNU_VTINHERIT }, 1192 { BFD_RELOC_VTABLE_ENTRY, R_M32R_GNU_VTENTRY }, 1193 }; 1194 #else 1195 static const struct m32r_reloc_map m32r_reloc_map[] = 1196 { 1197 { BFD_RELOC_NONE, R_M32R_NONE }, 1198 { BFD_RELOC_16, R_M32R_16_RELA }, 1199 { BFD_RELOC_32, R_M32R_32_RELA }, 1200 { BFD_RELOC_M32R_24, R_M32R_24_RELA }, 1201 { BFD_RELOC_M32R_10_PCREL, R_M32R_10_PCREL_RELA }, 1202 { BFD_RELOC_M32R_18_PCREL, R_M32R_18_PCREL_RELA }, 1203 { BFD_RELOC_M32R_26_PCREL, R_M32R_26_PCREL_RELA }, 1204 { BFD_RELOC_M32R_HI16_ULO, R_M32R_HI16_ULO_RELA }, 1205 { BFD_RELOC_M32R_HI16_SLO, R_M32R_HI16_SLO_RELA }, 1206 { BFD_RELOC_M32R_LO16, R_M32R_LO16_RELA }, 1207 { BFD_RELOC_M32R_SDA16, R_M32R_SDA16_RELA }, 1208 { BFD_RELOC_VTABLE_INHERIT, R_M32R_RELA_GNU_VTINHERIT }, 1209 { BFD_RELOC_VTABLE_ENTRY, R_M32R_RELA_GNU_VTENTRY }, 1210 { BFD_RELOC_32_PCREL, R_M32R_REL32 }, 1211 1212 { BFD_RELOC_M32R_GOT24, R_M32R_GOT24 }, 1213 { BFD_RELOC_M32R_26_PLTREL, R_M32R_26_PLTREL }, 1214 { BFD_RELOC_M32R_COPY, R_M32R_COPY }, 1215 { BFD_RELOC_M32R_GLOB_DAT, R_M32R_GLOB_DAT }, 1216 { BFD_RELOC_M32R_JMP_SLOT, R_M32R_JMP_SLOT }, 1217 { BFD_RELOC_M32R_RELATIVE, R_M32R_RELATIVE }, 1218 { BFD_RELOC_M32R_GOTOFF, R_M32R_GOTOFF }, 1219 { BFD_RELOC_M32R_GOTPC24, R_M32R_GOTPC24 }, 1220 { BFD_RELOC_M32R_GOT16_HI_ULO, R_M32R_GOT16_HI_ULO }, 1221 { BFD_RELOC_M32R_GOT16_HI_SLO, R_M32R_GOT16_HI_SLO }, 1222 { BFD_RELOC_M32R_GOT16_LO, R_M32R_GOT16_LO }, 1223 { BFD_RELOC_M32R_GOTPC_HI_ULO, R_M32R_GOTPC_HI_ULO }, 1224 { BFD_RELOC_M32R_GOTPC_HI_SLO, R_M32R_GOTPC_HI_SLO }, 1225 { BFD_RELOC_M32R_GOTPC_LO, R_M32R_GOTPC_LO }, 1226 { BFD_RELOC_M32R_GOTOFF_HI_ULO, R_M32R_GOTOFF_HI_ULO }, 1227 { BFD_RELOC_M32R_GOTOFF_HI_SLO, R_M32R_GOTOFF_HI_SLO }, 1228 { BFD_RELOC_M32R_GOTOFF_LO, R_M32R_GOTOFF_LO }, 1229 }; 1230 #endif 1231 1232 static reloc_howto_type * 1233 bfd_elf32_bfd_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED, 1234 bfd_reloc_code_real_type code) 1235 { 1236 unsigned int i; 1237 1238 #ifdef USE_M32R_OLD_RELOC 1239 for (i = 0; 1240 i < sizeof (m32r_reloc_map_old) / sizeof (struct m32r_reloc_map); 1241 i++) 1242 if (m32r_reloc_map_old[i].bfd_reloc_val == code) 1243 return &m32r_elf_howto_table[m32r_reloc_map_old[i].elf_reloc_val]; 1244 1245 #else /* ! USE_M32R_OLD_RELOC */ 1246 1247 for (i = 0; 1248 i < sizeof (m32r_reloc_map) / sizeof (struct m32r_reloc_map); 1249 i++) 1250 if (m32r_reloc_map[i].bfd_reloc_val == code) 1251 return &m32r_elf_howto_table[m32r_reloc_map[i].elf_reloc_val]; 1252 #endif 1253 1254 return NULL; 1255 } 1256 1257 static reloc_howto_type * 1258 bfd_elf32_bfd_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED, 1259 const char *r_name) 1260 { 1261 unsigned int i; 1262 1263 for (i = 0; 1264 i < sizeof (m32r_elf_howto_table) / sizeof (m32r_elf_howto_table[0]); 1265 i++) 1266 if (m32r_elf_howto_table[i].name != NULL 1267 && strcasecmp (m32r_elf_howto_table[i].name, r_name) == 0) 1268 return &m32r_elf_howto_table[i]; 1269 1270 return NULL; 1271 } 1272 1273 /* Set the howto pointer for an M32R ELF reloc. */ 1274 1275 static void 1276 m32r_info_to_howto_rel (bfd *abfd ATTRIBUTE_UNUSED, 1277 arelent *cache_ptr, 1278 Elf_Internal_Rela *dst) 1279 { 1280 unsigned int r_type; 1281 1282 r_type = ELF32_R_TYPE (dst->r_info); 1283 BFD_ASSERT (ELF32_R_TYPE(dst->r_info) <= (unsigned int) R_M32R_GNU_VTENTRY); 1284 cache_ptr->howto = &m32r_elf_howto_table[r_type]; 1285 } 1286 1287 static void 1288 m32r_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED, 1289 arelent *cache_ptr, 1290 Elf_Internal_Rela *dst) 1291 { 1292 BFD_ASSERT ((ELF32_R_TYPE(dst->r_info) == (unsigned int) R_M32R_NONE) 1293 || ((ELF32_R_TYPE(dst->r_info) > (unsigned int) R_M32R_GNU_VTENTRY) 1294 && (ELF32_R_TYPE(dst->r_info) < (unsigned int) R_M32R_max))); 1295 cache_ptr->howto = &m32r_elf_howto_table[ELF32_R_TYPE(dst->r_info)]; 1296 } 1297 1298 1299 /* Given a BFD section, try to locate the corresponding ELF section 1300 index. */ 1301 1302 static bfd_boolean 1303 _bfd_m32r_elf_section_from_bfd_section (bfd *abfd ATTRIBUTE_UNUSED, 1304 asection *sec, 1305 int *retval) 1306 { 1307 if (strcmp (bfd_get_section_name (abfd, sec), ".scommon") == 0) 1308 { 1309 *retval = SHN_M32R_SCOMMON; 1310 return TRUE; 1311 } 1312 return FALSE; 1313 } 1314 1315 /* M32R ELF uses two common sections. One is the usual one, and the other 1316 is for small objects. All the small objects are kept together, and then 1317 referenced via one register, which yields faster assembler code. It is 1318 up to the compiler to emit an instruction to load the register with 1319 _SDA_BASE. This is what we use for the small common section. This 1320 approach is copied from elf32-mips.c. */ 1321 static asection m32r_elf_scom_section; 1322 static asymbol m32r_elf_scom_symbol; 1323 static asymbol *m32r_elf_scom_symbol_ptr; 1324 1325 /* Handle the special M32R section numbers that a symbol may use. */ 1326 1327 static void 1328 _bfd_m32r_elf_symbol_processing (bfd *abfd ATTRIBUTE_UNUSED, asymbol *asym) 1329 { 1330 elf_symbol_type *elfsym = (elf_symbol_type *) asym; 1331 1332 switch (elfsym->internal_elf_sym.st_shndx) 1333 { 1334 case SHN_M32R_SCOMMON: 1335 if (m32r_elf_scom_section.name == NULL) 1336 { 1337 /* Initialize the small common section. */ 1338 m32r_elf_scom_section.name = ".scommon"; 1339 m32r_elf_scom_section.flags = SEC_IS_COMMON; 1340 m32r_elf_scom_section.output_section = &m32r_elf_scom_section; 1341 m32r_elf_scom_section.symbol = &m32r_elf_scom_symbol; 1342 m32r_elf_scom_section.symbol_ptr_ptr = &m32r_elf_scom_symbol_ptr; 1343 m32r_elf_scom_symbol.name = ".scommon"; 1344 m32r_elf_scom_symbol.flags = BSF_SECTION_SYM; 1345 m32r_elf_scom_symbol.section = &m32r_elf_scom_section; 1346 m32r_elf_scom_symbol_ptr = &m32r_elf_scom_symbol; 1347 } 1348 asym->section = &m32r_elf_scom_section; 1349 asym->value = elfsym->internal_elf_sym.st_size; 1350 break; 1351 } 1352 } 1353 1354 /* Hook called by the linker routine which adds symbols from an object 1355 file. We must handle the special M32R section numbers here. 1356 We also keep watching for whether we need to create the sdata special 1357 linker sections. */ 1358 1359 static bfd_boolean 1360 m32r_elf_add_symbol_hook (bfd *abfd, 1361 struct bfd_link_info *info, 1362 Elf_Internal_Sym *sym, 1363 const char **namep, 1364 flagword *flagsp ATTRIBUTE_UNUSED, 1365 asection **secp, 1366 bfd_vma *valp) 1367 { 1368 if (! info->relocatable 1369 && (*namep)[0] == '_' && (*namep)[1] == 'S' 1370 && strcmp (*namep, "_SDA_BASE_") == 0 1371 && is_elf_hash_table (info->hash)) 1372 { 1373 /* This is simpler than using _bfd_elf_create_linker_section 1374 (our needs are simpler than ppc's needs). Also 1375 _bfd_elf_create_linker_section currently has a bug where if a .sdata 1376 section already exists a new one is created that follows it which 1377 screws of _SDA_BASE_ address calcs because output_offset != 0. */ 1378 struct elf_link_hash_entry *h; 1379 struct bfd_link_hash_entry *bh; 1380 asection *s = bfd_get_section_by_name (abfd, ".sdata"); 1381 1382 /* The following code was cobbled from elf32-ppc.c and elflink.c. */ 1383 if (s == NULL) 1384 { 1385 flagword flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS 1386 | SEC_IN_MEMORY | SEC_LINKER_CREATED); 1387 1388 s = bfd_make_section_anyway_with_flags (abfd, ".sdata", 1389 flags); 1390 if (s == NULL) 1391 return FALSE; 1392 if (! bfd_set_section_alignment (abfd, s, 2)) 1393 return FALSE; 1394 } 1395 1396 bh = bfd_link_hash_lookup (info->hash, "_SDA_BASE_", 1397 FALSE, FALSE, FALSE); 1398 1399 if ((bh == NULL || bh->type == bfd_link_hash_undefined) 1400 && !(_bfd_generic_link_add_one_symbol (info, 1401 abfd, 1402 "_SDA_BASE_", 1403 BSF_GLOBAL, 1404 s, 1405 (bfd_vma) 32768, 1406 NULL, 1407 FALSE, 1408 get_elf_backend_data (abfd)->collect, 1409 &bh))) 1410 return FALSE; 1411 h = (struct elf_link_hash_entry *) bh; 1412 h->type = STT_OBJECT; 1413 } 1414 1415 switch (sym->st_shndx) 1416 { 1417 case SHN_M32R_SCOMMON: 1418 *secp = bfd_make_section_old_way (abfd, ".scommon"); 1419 (*secp)->flags |= SEC_IS_COMMON; 1420 *valp = sym->st_size; 1421 break; 1422 } 1423 1424 return TRUE; 1425 } 1426 1427 /* We have to figure out the SDA_BASE value, so that we can adjust the 1428 symbol value correctly. We look up the symbol _SDA_BASE_ in the output 1429 BFD. If we can't find it, we're stuck. We cache it in the ELF 1430 target data. We don't need to adjust the symbol value for an 1431 external symbol if we are producing relocatable output. */ 1432 1433 static bfd_reloc_status_type 1434 m32r_elf_final_sda_base (bfd *output_bfd, 1435 struct bfd_link_info *info, 1436 const char **error_message, 1437 bfd_vma *psb) 1438 { 1439 if (elf_gp (output_bfd) == 0) 1440 { 1441 struct bfd_link_hash_entry *h; 1442 1443 h = bfd_link_hash_lookup (info->hash, "_SDA_BASE_", FALSE, FALSE, TRUE); 1444 if (h != NULL && h->type == bfd_link_hash_defined) 1445 elf_gp (output_bfd) = (h->u.def.value 1446 + h->u.def.section->output_section->vma 1447 + h->u.def.section->output_offset); 1448 else 1449 { 1450 /* Only get the error once. */ 1451 *psb = elf_gp (output_bfd) = 4; 1452 *error_message = 1453 (const char *) _("SDA relocation when _SDA_BASE_ not defined"); 1454 return bfd_reloc_dangerous; 1455 } 1456 } 1457 *psb = elf_gp (output_bfd); 1458 return bfd_reloc_ok; 1459 } 1460 1461 /* Return size of a PLT entry. */ 1462 #define elf_m32r_sizeof_plt(info) PLT_ENTRY_SIZE 1463 1464 /* The m32r linker needs to keep track of the number of relocs that it 1465 decides to copy in check_relocs for each symbol. This is so that 1466 it can discard PC relative relocs if it doesn't need them when 1467 linking with -Bsymbolic. We store the information in a field 1468 extending the regular ELF linker hash table. */ 1469 1470 /* This structure keeps track of the number of PC relative relocs we 1471 have copied for a given symbol. */ 1472 1473 struct elf_m32r_pcrel_relocs_copied 1474 { 1475 /* Next section. */ 1476 struct elf_m32r_pcrel_relocs_copied *next; 1477 /* A section in dynobj. */ 1478 asection *section; 1479 /* Number of relocs copied in this section. */ 1480 bfd_size_type count; 1481 }; 1482 1483 /* The sh linker needs to keep track of the number of relocs that it 1484 decides to copy as dynamic relocs in check_relocs for each symbol. 1485 This is so that it can later discard them if they are found to be 1486 unnecessary. We store the information in a field extending the 1487 regular ELF linker hash table. */ 1488 1489 struct elf_m32r_dyn_relocs 1490 { 1491 struct elf_m32r_dyn_relocs *next; 1492 1493 /* The input section of the reloc. */ 1494 asection *sec; 1495 1496 /* Total number of relocs copied for the input section. */ 1497 bfd_size_type count; 1498 1499 /* Number of pc-relative relocs copied for the input section. */ 1500 bfd_size_type pc_count; 1501 }; 1502 1503 1504 /* m32r ELF linker hash entry. */ 1505 1506 struct elf_m32r_link_hash_entry 1507 { 1508 struct elf_link_hash_entry root; 1509 1510 /* Track dynamic relocs copied for this symbol. */ 1511 struct elf_m32r_dyn_relocs *dyn_relocs; 1512 }; 1513 1514 /* m32r ELF linker hash table. */ 1515 1516 struct elf_m32r_link_hash_table 1517 { 1518 struct elf_link_hash_table root; 1519 1520 /* Short-cuts to get to dynamic linker sections. */ 1521 asection *sgot; 1522 asection *sgotplt; 1523 asection *srelgot; 1524 asection *splt; 1525 asection *srelplt; 1526 asection *sdynbss; 1527 asection *srelbss; 1528 1529 /* Small local sym cache. */ 1530 struct sym_cache sym_cache; 1531 }; 1532 1533 /* Traverse an m32r ELF linker hash table. */ 1534 1535 #define m32r_elf_link_hash_traverse(table, func, info) \ 1536 (elf_link_hash_traverse \ 1537 (&(table)->root, \ 1538 (bfd_boolean (*) (struct elf_link_hash_entry *, void *)) (func), \ 1539 (info))) 1540 1541 /* Get the m32r ELF linker hash table from a link_info structure. */ 1542 1543 #define m32r_elf_hash_table(p) \ 1544 (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \ 1545 == M32R_ELF_DATA ? ((struct elf_m32r_link_hash_table *) ((p)->hash)) : NULL) 1546 1547 /* Create an entry in an m32r ELF linker hash table. */ 1548 1549 static struct bfd_hash_entry * 1550 m32r_elf_link_hash_newfunc (struct bfd_hash_entry *entry, 1551 struct bfd_hash_table *table, 1552 const char *string) 1553 { 1554 struct elf_m32r_link_hash_entry *ret = 1555 (struct elf_m32r_link_hash_entry *) entry; 1556 1557 /* Allocate the structure if it has not already been allocated by a 1558 subclass. */ 1559 if (ret == NULL) 1560 ret = bfd_hash_allocate (table, 1561 sizeof (struct elf_m32r_link_hash_entry)); 1562 if (ret == NULL) 1563 return NULL; 1564 1565 /* Call the allocation method of the superclass. */ 1566 ret = ((struct elf_m32r_link_hash_entry *) 1567 _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret, 1568 table, string)); 1569 if (ret != NULL) 1570 { 1571 struct elf_m32r_link_hash_entry *eh; 1572 1573 eh = (struct elf_m32r_link_hash_entry *) ret; 1574 eh->dyn_relocs = NULL; 1575 } 1576 1577 return (struct bfd_hash_entry *) ret; 1578 } 1579 1580 /* Create an m32r ELF linker hash table. */ 1581 1582 static struct bfd_link_hash_table * 1583 m32r_elf_link_hash_table_create (bfd *abfd) 1584 { 1585 struct elf_m32r_link_hash_table *ret; 1586 bfd_size_type amt = sizeof (struct elf_m32r_link_hash_table); 1587 1588 ret = bfd_zmalloc (amt); 1589 if (ret == NULL) 1590 return NULL; 1591 1592 if (!_bfd_elf_link_hash_table_init (&ret->root, abfd, 1593 m32r_elf_link_hash_newfunc, 1594 sizeof (struct elf_m32r_link_hash_entry), 1595 M32R_ELF_DATA)) 1596 { 1597 free (ret); 1598 return NULL; 1599 } 1600 1601 return &ret->root.root; 1602 } 1603 1604 /* Create .got, .gotplt, and .rela.got sections in DYNOBJ, and set up 1605 shortcuts to them in our hash table. */ 1606 1607 static bfd_boolean 1608 create_got_section (bfd *dynobj, struct bfd_link_info *info) 1609 { 1610 struct elf_m32r_link_hash_table *htab; 1611 1612 if (! _bfd_elf_create_got_section (dynobj, info)) 1613 return FALSE; 1614 1615 htab = m32r_elf_hash_table (info); 1616 if (htab == NULL) 1617 return FALSE; 1618 1619 htab->sgot = bfd_get_linker_section (dynobj, ".got"); 1620 htab->sgotplt = bfd_get_linker_section (dynobj, ".got.plt"); 1621 htab->srelgot = bfd_get_linker_section (dynobj, ".rela.got"); 1622 if (! htab->sgot || ! htab->sgotplt || ! htab->srelgot) 1623 abort (); 1624 1625 return TRUE; 1626 } 1627 1628 /* Create dynamic sections when linking against a dynamic object. */ 1629 1630 static bfd_boolean 1631 m32r_elf_create_dynamic_sections (bfd *abfd, struct bfd_link_info *info) 1632 { 1633 struct elf_m32r_link_hash_table *htab; 1634 flagword flags, pltflags; 1635 asection *s; 1636 const struct elf_backend_data *bed = get_elf_backend_data (abfd); 1637 int ptralign = 2; /* 32bit */ 1638 1639 htab = m32r_elf_hash_table (info); 1640 if (htab == NULL) 1641 return FALSE; 1642 1643 /* We need to create .plt, .rel[a].plt, .got, .got.plt, .dynbss, and 1644 .rel[a].bss sections. */ 1645 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY 1646 | SEC_LINKER_CREATED); 1647 1648 pltflags = flags; 1649 pltflags |= SEC_CODE; 1650 if (bed->plt_not_loaded) 1651 pltflags &= ~ (SEC_LOAD | SEC_HAS_CONTENTS); 1652 if (bed->plt_readonly) 1653 pltflags |= SEC_READONLY; 1654 1655 s = bfd_make_section_anyway_with_flags (abfd, ".plt", pltflags); 1656 htab->splt = s; 1657 if (s == NULL 1658 || ! bfd_set_section_alignment (abfd, s, bed->plt_alignment)) 1659 return FALSE; 1660 1661 if (bed->want_plt_sym) 1662 { 1663 /* Define the symbol _PROCEDURE_LINKAGE_TABLE_ at the start of the 1664 .plt section. */ 1665 struct bfd_link_hash_entry *bh = NULL; 1666 struct elf_link_hash_entry *h; 1667 1668 if (! (_bfd_generic_link_add_one_symbol 1669 (info, abfd, "_PROCEDURE_LINKAGE_TABLE_", BSF_GLOBAL, s, 1670 (bfd_vma) 0, NULL, FALSE, 1671 get_elf_backend_data (abfd)->collect, &bh))) 1672 return FALSE; 1673 h = (struct elf_link_hash_entry *) bh; 1674 h->def_regular = 1; 1675 h->type = STT_OBJECT; 1676 htab->root.hplt = h; 1677 1678 if (info->shared 1679 && ! bfd_elf_link_record_dynamic_symbol (info, h)) 1680 return FALSE; 1681 } 1682 1683 s = bfd_make_section_anyway_with_flags (abfd, 1684 bed->default_use_rela_p 1685 ? ".rela.plt" : ".rel.plt", 1686 flags | SEC_READONLY); 1687 htab->srelplt = s; 1688 if (s == NULL 1689 || ! bfd_set_section_alignment (abfd, s, ptralign)) 1690 return FALSE; 1691 1692 if (htab->sgot == NULL 1693 && ! create_got_section (abfd, info)) 1694 return FALSE; 1695 1696 if (bed->want_dynbss) 1697 { 1698 /* The .dynbss section is a place to put symbols which are defined 1699 by dynamic objects, are referenced by regular objects, and are 1700 not functions. We must allocate space for them in the process 1701 image and use a R_*_COPY reloc to tell the dynamic linker to 1702 initialize them at run time. The linker script puts the .dynbss 1703 section into the .bss section of the final image. */ 1704 s = bfd_make_section_anyway_with_flags (abfd, ".dynbss", 1705 SEC_ALLOC | SEC_LINKER_CREATED); 1706 htab->sdynbss = s; 1707 if (s == NULL) 1708 return FALSE; 1709 /* The .rel[a].bss section holds copy relocs. This section is not 1710 normally needed. We need to create it here, though, so that the 1711 linker will map it to an output section. We can't just create it 1712 only if we need it, because we will not know whether we need it 1713 until we have seen all the input files, and the first time the 1714 main linker code calls BFD after examining all the input files 1715 (size_dynamic_sections) the input sections have already been 1716 mapped to the output sections. If the section turns out not to 1717 be needed, we can discard it later. We will never need this 1718 section when generating a shared object, since they do not use 1719 copy relocs. */ 1720 if (! info->shared) 1721 { 1722 s = bfd_make_section_anyway_with_flags (abfd, 1723 (bed->default_use_rela_p 1724 ? ".rela.bss" : ".rel.bss"), 1725 flags | SEC_READONLY); 1726 htab->srelbss = s; 1727 if (s == NULL 1728 || ! bfd_set_section_alignment (abfd, s, ptralign)) 1729 return FALSE; 1730 } 1731 } 1732 1733 return TRUE; 1734 } 1735 1736 /* Copy the extra info we tack onto an elf_link_hash_entry. */ 1737 1738 static void 1739 m32r_elf_copy_indirect_symbol (struct bfd_link_info *info, 1740 struct elf_link_hash_entry *dir, 1741 struct elf_link_hash_entry *ind) 1742 { 1743 struct elf_m32r_link_hash_entry * edir; 1744 struct elf_m32r_link_hash_entry * eind; 1745 1746 edir = (struct elf_m32r_link_hash_entry *) dir; 1747 eind = (struct elf_m32r_link_hash_entry *) ind; 1748 1749 if (eind->dyn_relocs != NULL) 1750 { 1751 if (edir->dyn_relocs != NULL) 1752 { 1753 struct elf_m32r_dyn_relocs **pp; 1754 struct elf_m32r_dyn_relocs *p; 1755 1756 /* Add reloc counts against the indirect sym to the direct sym 1757 list. Merge any entries against the same section. */ 1758 for (pp = &eind->dyn_relocs; (p = *pp) != NULL;) 1759 { 1760 struct elf_m32r_dyn_relocs *q; 1761 1762 for (q = edir->dyn_relocs; q != NULL; q = q->next) 1763 if (q->sec == p->sec) 1764 { 1765 q->pc_count += p->pc_count; 1766 q->count += p->count; 1767 *pp = p->next; 1768 break; 1769 } 1770 if (q == NULL) 1771 pp = &p->next; 1772 } 1773 *pp = edir->dyn_relocs; 1774 } 1775 1776 edir->dyn_relocs = eind->dyn_relocs; 1777 eind->dyn_relocs = NULL; 1778 } 1779 1780 _bfd_elf_link_hash_copy_indirect (info, dir, ind); 1781 } 1782 1783 1784 /* Adjust a symbol defined by a dynamic object and referenced by a 1785 regular object. The current definition is in some section of the 1786 dynamic object, but we're not including those sections. We have to 1787 change the definition to something the rest of the link can 1788 understand. */ 1789 1790 static bfd_boolean 1791 m32r_elf_adjust_dynamic_symbol (struct bfd_link_info *info, 1792 struct elf_link_hash_entry *h) 1793 { 1794 struct elf_m32r_link_hash_table *htab; 1795 struct elf_m32r_link_hash_entry *eh; 1796 struct elf_m32r_dyn_relocs *p; 1797 bfd *dynobj; 1798 asection *s; 1799 1800 #ifdef DEBUG_PIC 1801 printf ("m32r_elf_adjust_dynamic_symbol()\n"); 1802 #endif 1803 1804 dynobj = elf_hash_table (info)->dynobj; 1805 1806 /* Make sure we know what is going on here. */ 1807 BFD_ASSERT (dynobj != NULL 1808 && (h->needs_plt 1809 || h->u.weakdef != NULL 1810 || (h->def_dynamic 1811 && h->ref_regular 1812 && !h->def_regular))); 1813 1814 /* If this is a function, put it in the procedure linkage table. We 1815 will fill in the contents of the procedure linkage table later, 1816 when we know the address of the .got section. */ 1817 if (h->type == STT_FUNC 1818 || h->needs_plt) 1819 { 1820 if (! info->shared 1821 && !h->def_dynamic 1822 && !h->ref_dynamic 1823 && h->root.type != bfd_link_hash_undefweak 1824 && h->root.type != bfd_link_hash_undefined) 1825 { 1826 /* This case can occur if we saw a PLT reloc in an input 1827 file, but the symbol was never referred to by a dynamic 1828 object. In such a case, we don't actually need to build 1829 a procedure linkage table, and we can just do a PCREL 1830 reloc instead. */ 1831 h->plt.offset = (bfd_vma) -1; 1832 h->needs_plt = 0; 1833 } 1834 1835 return TRUE; 1836 } 1837 else 1838 h->plt.offset = (bfd_vma) -1; 1839 1840 /* If this is a weak symbol, and there is a real definition, the 1841 processor independent code will have arranged for us to see the 1842 real definition first, and we can just use the same value. */ 1843 if (h->u.weakdef != NULL) 1844 { 1845 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined 1846 || h->u.weakdef->root.type == bfd_link_hash_defweak); 1847 h->root.u.def.section = h->u.weakdef->root.u.def.section; 1848 h->root.u.def.value = h->u.weakdef->root.u.def.value; 1849 return TRUE; 1850 } 1851 1852 /* This is a reference to a symbol defined by a dynamic object which 1853 is not a function. */ 1854 1855 /* If we are creating a shared library, we must presume that the 1856 only references to the symbol are via the global offset table. 1857 For such cases we need not do anything here; the relocations will 1858 be handled correctly by relocate_section. */ 1859 if (info->shared) 1860 return TRUE; 1861 1862 /* If there are no references to this symbol that do not use the 1863 GOT, we don't need to generate a copy reloc. */ 1864 if (!h->non_got_ref) 1865 return TRUE; 1866 1867 /* If -z nocopyreloc was given, we won't generate them either. */ 1868 if (info->nocopyreloc) 1869 { 1870 h->non_got_ref = 0; 1871 return TRUE; 1872 } 1873 1874 eh = (struct elf_m32r_link_hash_entry *) h; 1875 for (p = eh->dyn_relocs; p != NULL; p = p->next) 1876 { 1877 s = p->sec->output_section; 1878 if (s != NULL && (s->flags & (SEC_READONLY | SEC_HAS_CONTENTS)) != 0) 1879 break; 1880 } 1881 1882 /* If we didn't find any dynamic relocs in sections which needs the 1883 copy reloc, then we'll be keeping the dynamic relocs and avoiding 1884 the copy reloc. */ 1885 if (p == NULL) 1886 { 1887 h->non_got_ref = 0; 1888 return TRUE; 1889 } 1890 1891 /* We must allocate the symbol in our .dynbss section, which will 1892 become part of the .bss section of the executable. There will be 1893 an entry for this symbol in the .dynsym section. The dynamic 1894 object will contain position independent code, so all references 1895 from the dynamic object to this symbol will go through the global 1896 offset table. The dynamic linker will use the .dynsym entry to 1897 determine the address it must put in the global offset table, so 1898 both the dynamic object and the regular object will refer to the 1899 same memory location for the variable. */ 1900 1901 htab = m32r_elf_hash_table (info); 1902 if (htab == NULL) 1903 return FALSE; 1904 1905 s = htab->sdynbss; 1906 BFD_ASSERT (s != NULL); 1907 1908 /* We must generate a R_M32R_COPY reloc to tell the dynamic linker 1909 to copy the initial value out of the dynamic object and into the 1910 runtime process image. We need to remember the offset into the 1911 .rela.bss section we are going to use. */ 1912 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0) 1913 { 1914 asection *srel; 1915 1916 srel = htab->srelbss; 1917 BFD_ASSERT (srel != NULL); 1918 srel->size += sizeof (Elf32_External_Rela); 1919 h->needs_copy = 1; 1920 } 1921 1922 return _bfd_elf_adjust_dynamic_copy (h, s); 1923 } 1924 1925 /* Allocate space in .plt, .got and associated reloc sections for 1926 dynamic relocs. */ 1927 1928 static bfd_boolean 1929 allocate_dynrelocs (struct elf_link_hash_entry *h, void * inf) 1930 { 1931 struct bfd_link_info *info; 1932 struct elf_m32r_link_hash_table *htab; 1933 struct elf_m32r_link_hash_entry *eh; 1934 struct elf_m32r_dyn_relocs *p; 1935 1936 if (h->root.type == bfd_link_hash_indirect) 1937 return TRUE; 1938 1939 info = (struct bfd_link_info *) inf; 1940 htab = m32r_elf_hash_table (info); 1941 if (htab == NULL) 1942 return FALSE; 1943 1944 eh = (struct elf_m32r_link_hash_entry *) h; 1945 1946 if (htab->root.dynamic_sections_created 1947 && h->plt.refcount > 0) 1948 { 1949 /* Make sure this symbol is output as a dynamic symbol. 1950 Undefined weak syms won't yet be marked as dynamic. */ 1951 if (h->dynindx == -1 1952 && !h->forced_local) 1953 { 1954 if (! bfd_elf_link_record_dynamic_symbol (info, h)) 1955 return FALSE; 1956 } 1957 1958 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, info->shared, h)) 1959 { 1960 asection *s = htab->splt; 1961 1962 /* If this is the first .plt entry, make room for the special 1963 first entry. */ 1964 if (s->size == 0) 1965 s->size += PLT_ENTRY_SIZE; 1966 1967 h->plt.offset = s->size; 1968 1969 /* If this symbol is not defined in a regular file, and we are 1970 not generating a shared library, then set the symbol to this 1971 location in the .plt. This is required to make function 1972 pointers compare as equal between the normal executable and 1973 the shared library. */ 1974 if (! info->shared 1975 && !h->def_regular) 1976 { 1977 h->root.u.def.section = s; 1978 h->root.u.def.value = h->plt.offset; 1979 } 1980 1981 /* Make room for this entry. */ 1982 s->size += PLT_ENTRY_SIZE; 1983 1984 /* We also need to make an entry in the .got.plt section, which 1985 will be placed in the .got section by the linker script. */ 1986 htab->sgotplt->size += 4; 1987 1988 /* We also need to make an entry in the .rel.plt section. */ 1989 htab->srelplt->size += sizeof (Elf32_External_Rela); 1990 } 1991 else 1992 { 1993 h->plt.offset = (bfd_vma) -1; 1994 h->needs_plt = 0; 1995 } 1996 } 1997 else 1998 { 1999 h->plt.offset = (bfd_vma) -1; 2000 h->needs_plt = 0; 2001 } 2002 2003 if (h->got.refcount > 0) 2004 { 2005 asection *s; 2006 bfd_boolean dyn; 2007 2008 /* Make sure this symbol is output as a dynamic symbol. 2009 Undefined weak syms won't yet be marked as dynamic. */ 2010 if (h->dynindx == -1 2011 && !h->forced_local) 2012 { 2013 if (! bfd_elf_link_record_dynamic_symbol (info, h)) 2014 return FALSE; 2015 } 2016 2017 s = htab->sgot; 2018 2019 h->got.offset = s->size; 2020 s->size += 4; 2021 dyn = htab->root.dynamic_sections_created; 2022 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h)) 2023 htab->srelgot->size += sizeof (Elf32_External_Rela); 2024 } 2025 else 2026 h->got.offset = (bfd_vma) -1; 2027 2028 if (eh->dyn_relocs == NULL) 2029 return TRUE; 2030 2031 /* In the shared -Bsymbolic case, discard space allocated for 2032 dynamic pc-relative relocs against symbols which turn out to be 2033 defined in regular objects. For the normal shared case, discard 2034 space for pc-relative relocs that have become local due to symbol 2035 visibility changes. */ 2036 2037 if (info->shared) 2038 { 2039 if (h->def_regular 2040 && (h->forced_local 2041 || info->symbolic)) 2042 { 2043 struct elf_m32r_dyn_relocs **pp; 2044 2045 for (pp = &eh->dyn_relocs; (p = *pp) != NULL;) 2046 { 2047 p->count -= p->pc_count; 2048 p->pc_count = 0; 2049 if (p->count == 0) 2050 *pp = p->next; 2051 else 2052 pp = &p->next; 2053 } 2054 } 2055 2056 /* Also discard relocs on undefined weak syms with non-default 2057 visibility. */ 2058 if (eh->dyn_relocs != NULL 2059 && h->root.type == bfd_link_hash_undefweak) 2060 { 2061 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT) 2062 eh->dyn_relocs = NULL; 2063 2064 /* Make sure undefined weak symbols are output as a dynamic 2065 symbol in PIEs. */ 2066 else if (h->dynindx == -1 2067 && !h->forced_local) 2068 { 2069 if (! bfd_elf_link_record_dynamic_symbol (info, h)) 2070 return FALSE; 2071 } 2072 } 2073 } 2074 else 2075 { 2076 /* For the non-shared case, discard space for relocs against 2077 symbols which turn out to need copy relocs or are not 2078 dynamic. */ 2079 2080 if (!h->non_got_ref 2081 && ((h->def_dynamic 2082 && !h->def_regular) 2083 || (htab->root.dynamic_sections_created 2084 && (h->root.type == bfd_link_hash_undefweak 2085 || h->root.type == bfd_link_hash_undefined)))) 2086 { 2087 /* Make sure this symbol is output as a dynamic symbol. 2088 Undefined weak syms won't yet be marked as dynamic. */ 2089 if (h->dynindx == -1 2090 && !h->forced_local) 2091 { 2092 if (! bfd_elf_link_record_dynamic_symbol (info, h)) 2093 return FALSE; 2094 } 2095 2096 /* If that succeeded, we know we'll be keeping all the 2097 relocs. */ 2098 if (h->dynindx != -1) 2099 goto keep; 2100 } 2101 2102 eh->dyn_relocs = NULL; 2103 2104 keep: ; 2105 } 2106 2107 /* Finally, allocate space. */ 2108 for (p = eh->dyn_relocs; p != NULL; p = p->next) 2109 { 2110 asection *sreloc = elf_section_data (p->sec)->sreloc; 2111 sreloc->size += p->count * sizeof (Elf32_External_Rela); 2112 } 2113 2114 return TRUE; 2115 } 2116 2117 /* Find any dynamic relocs that apply to read-only sections. */ 2118 2119 static bfd_boolean 2120 readonly_dynrelocs (struct elf_link_hash_entry *h, void * inf) 2121 { 2122 struct elf_m32r_link_hash_entry *eh; 2123 struct elf_m32r_dyn_relocs *p; 2124 2125 eh = (struct elf_m32r_link_hash_entry *) h; 2126 for (p = eh->dyn_relocs; p != NULL; p = p->next) 2127 { 2128 asection *s = p->sec->output_section; 2129 2130 if (s != NULL && (s->flags & SEC_READONLY) != 0) 2131 { 2132 struct bfd_link_info *info = (struct bfd_link_info *) inf; 2133 2134 info->flags |= DF_TEXTREL; 2135 2136 /* Not an error, just cut short the traversal. */ 2137 return FALSE; 2138 } 2139 } 2140 return TRUE; 2141 } 2142 2143 /* Set the sizes of the dynamic sections. */ 2144 2145 static bfd_boolean 2146 m32r_elf_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED, 2147 struct bfd_link_info *info) 2148 { 2149 struct elf_m32r_link_hash_table *htab; 2150 bfd *dynobj; 2151 asection *s; 2152 bfd_boolean relocs; 2153 bfd *ibfd; 2154 2155 #ifdef DEBUG_PIC 2156 printf ("m32r_elf_size_dynamic_sections()\n"); 2157 #endif 2158 2159 htab = m32r_elf_hash_table (info); 2160 if (htab == NULL) 2161 return FALSE; 2162 2163 dynobj = htab->root.dynobj; 2164 BFD_ASSERT (dynobj != NULL); 2165 2166 if (htab->root.dynamic_sections_created) 2167 { 2168 /* Set the contents of the .interp section to the interpreter. */ 2169 if (info->executable) 2170 { 2171 s = bfd_get_linker_section (dynobj, ".interp"); 2172 BFD_ASSERT (s != NULL); 2173 s->size = sizeof ELF_DYNAMIC_INTERPRETER; 2174 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER; 2175 } 2176 } 2177 2178 /* Set up .got offsets for local syms, and space for local dynamic 2179 relocs. */ 2180 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) 2181 { 2182 bfd_signed_vma *local_got; 2183 bfd_signed_vma *end_local_got; 2184 bfd_size_type locsymcount; 2185 Elf_Internal_Shdr *symtab_hdr; 2186 asection *srel; 2187 2188 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour) 2189 continue; 2190 2191 for (s = ibfd->sections; s != NULL; s = s->next) 2192 { 2193 struct elf_m32r_dyn_relocs *p; 2194 2195 for (p = ((struct elf_m32r_dyn_relocs *) 2196 elf_section_data (s)->local_dynrel); 2197 p != NULL; 2198 p = p->next) 2199 { 2200 if (! bfd_is_abs_section (p->sec) 2201 && bfd_is_abs_section (p->sec->output_section)) 2202 { 2203 /* Input section has been discarded, either because 2204 it is a copy of a linkonce section or due to 2205 linker script /DISCARD/, so we'll be discarding 2206 the relocs too. */ 2207 } 2208 else if (p->count != 0) 2209 { 2210 srel = elf_section_data (p->sec)->sreloc; 2211 srel->size += p->count * sizeof (Elf32_External_Rela); 2212 if ((p->sec->output_section->flags & SEC_READONLY) != 0) 2213 info->flags |= DF_TEXTREL; 2214 } 2215 } 2216 } 2217 2218 local_got = elf_local_got_refcounts (ibfd); 2219 if (!local_got) 2220 continue; 2221 2222 symtab_hdr = &elf_tdata (ibfd)->symtab_hdr; 2223 locsymcount = symtab_hdr->sh_info; 2224 end_local_got = local_got + locsymcount; 2225 s = htab->sgot; 2226 srel = htab->srelgot; 2227 for (; local_got < end_local_got; ++local_got) 2228 { 2229 if (*local_got > 0) 2230 { 2231 *local_got = s->size; 2232 s->size += 4; 2233 if (info->shared) 2234 srel->size += sizeof (Elf32_External_Rela); 2235 } 2236 else 2237 *local_got = (bfd_vma) -1; 2238 } 2239 } 2240 2241 /* Allocate global sym .plt and .got entries, and space for global 2242 sym dynamic relocs. */ 2243 elf_link_hash_traverse (&htab->root, allocate_dynrelocs, info); 2244 2245 /* We now have determined the sizes of the various dynamic sections. 2246 Allocate memory for them. */ 2247 relocs = FALSE; 2248 for (s = dynobj->sections; s != NULL; s = s->next) 2249 { 2250 if ((s->flags & SEC_LINKER_CREATED) == 0) 2251 continue; 2252 2253 if (s == htab->splt 2254 || s == htab->sgot 2255 || s == htab->sgotplt 2256 || s == htab->sdynbss) 2257 { 2258 /* Strip this section if we don't need it; see the 2259 comment below. */ 2260 } 2261 else if (CONST_STRNEQ (bfd_get_section_name (dynobj, s), ".rela")) 2262 { 2263 if (s->size != 0 && s != htab->srelplt) 2264 relocs = TRUE; 2265 2266 /* We use the reloc_count field as a counter if we need 2267 to copy relocs into the output file. */ 2268 s->reloc_count = 0; 2269 } 2270 else 2271 /* It's not one of our sections, so don't allocate space. */ 2272 continue; 2273 2274 if (s->size == 0) 2275 { 2276 /* If we don't need this section, strip it from the 2277 output file. This is mostly to handle .rela.bss and 2278 .rela.plt. We must create both sections in 2279 create_dynamic_sections, because they must be created 2280 before the linker maps input sections to output 2281 sections. The linker does that before 2282 adjust_dynamic_symbol is called, and it is that 2283 function which decides whether anything needs to go 2284 into these sections. */ 2285 s->flags |= SEC_EXCLUDE; 2286 continue; 2287 } 2288 2289 if ((s->flags & SEC_HAS_CONTENTS) == 0) 2290 continue; 2291 2292 /* Allocate memory for the section contents. We use bfd_zalloc 2293 here in case unused entries are not reclaimed before the 2294 section's contents are written out. This should not happen, 2295 but this way if it does, we get a R_M32R_NONE reloc instead 2296 of garbage. */ 2297 s->contents = bfd_zalloc (dynobj, s->size); 2298 if (s->contents == NULL) 2299 return FALSE; 2300 } 2301 2302 if (htab->root.dynamic_sections_created) 2303 { 2304 /* Add some entries to the .dynamic section. We fill in the 2305 values later, in m32r_elf_finish_dynamic_sections, but we 2306 must add the entries now so that we get the correct size for 2307 the .dynamic section. The DT_DEBUG entry is filled in by the 2308 dynamic linker and used by the debugger. */ 2309 #define add_dynamic_entry(TAG, VAL) \ 2310 _bfd_elf_add_dynamic_entry (info, TAG, VAL) 2311 2312 if (info->executable) 2313 { 2314 if (! add_dynamic_entry (DT_DEBUG, 0)) 2315 return FALSE; 2316 } 2317 2318 if (htab->splt->size != 0) 2319 { 2320 if (! add_dynamic_entry (DT_PLTGOT, 0) 2321 || ! add_dynamic_entry (DT_PLTRELSZ, 0) 2322 || ! add_dynamic_entry (DT_PLTREL, DT_RELA) 2323 || ! add_dynamic_entry (DT_JMPREL, 0)) 2324 return FALSE; 2325 } 2326 2327 if (relocs) 2328 { 2329 if (! add_dynamic_entry (DT_RELA, 0) 2330 || ! add_dynamic_entry (DT_RELASZ, 0) 2331 || ! add_dynamic_entry (DT_RELAENT, 2332 sizeof (Elf32_External_Rela))) 2333 return FALSE; 2334 2335 /* If any dynamic relocs apply to a read-only section, 2336 then we need a DT_TEXTREL entry. */ 2337 if ((info->flags & DF_TEXTREL) == 0) 2338 elf_link_hash_traverse (&htab->root, readonly_dynrelocs, 2339 info); 2340 2341 if ((info->flags & DF_TEXTREL) != 0) 2342 { 2343 if (! add_dynamic_entry (DT_TEXTREL, 0)) 2344 return FALSE; 2345 } 2346 } 2347 } 2348 #undef add_dynamic_entry 2349 2350 return TRUE; 2351 } 2352 2353 /* Relocate an M32R/D ELF section. 2354 There is some attempt to make this function usable for many architectures, 2355 both for RELA and REL type relocs, if only to serve as a learning tool. 2356 2357 The RELOCATE_SECTION function is called by the new ELF backend linker 2358 to handle the relocations for a section. 2359 2360 The relocs are always passed as Rela structures; if the section 2361 actually uses Rel structures, the r_addend field will always be 2362 zero. 2363 2364 This function is responsible for adjust the section contents as 2365 necessary, and (if using Rela relocs and generating a 2366 relocatable output file) adjusting the reloc addend as 2367 necessary. 2368 2369 This function does not have to worry about setting the reloc 2370 address or the reloc symbol index. 2371 2372 LOCAL_SYMS is a pointer to the swapped in local symbols. 2373 2374 LOCAL_SECTIONS is an array giving the section in the input file 2375 corresponding to the st_shndx field of each local symbol. 2376 2377 The global hash table entry for the global symbols can be found 2378 via elf_sym_hashes (input_bfd). 2379 2380 When generating relocatable output, this function must handle 2381 STB_LOCAL/STT_SECTION symbols specially. The output symbol is 2382 going to be the section symbol corresponding to the output 2383 section, which means that the addend must be adjusted 2384 accordingly. */ 2385 2386 static bfd_boolean 2387 m32r_elf_relocate_section (bfd *output_bfd ATTRIBUTE_UNUSED, 2388 struct bfd_link_info *info, 2389 bfd *input_bfd, 2390 asection *input_section, 2391 bfd_byte *contents, 2392 Elf_Internal_Rela *relocs, 2393 Elf_Internal_Sym *local_syms, 2394 asection **local_sections) 2395 { 2396 Elf_Internal_Shdr *symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; 2397 struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (input_bfd); 2398 Elf_Internal_Rela *rel, *relend; 2399 /* Assume success. */ 2400 bfd_boolean ret = TRUE; 2401 struct elf_m32r_link_hash_table *htab = m32r_elf_hash_table (info); 2402 bfd *dynobj; 2403 bfd_vma *local_got_offsets; 2404 asection *sgot, *splt, *sreloc; 2405 bfd_vma high_address = bfd_get_section_limit (input_bfd, input_section); 2406 2407 if (htab == NULL) 2408 return FALSE; 2409 2410 dynobj = htab->root.dynobj; 2411 local_got_offsets = elf_local_got_offsets (input_bfd); 2412 2413 sgot = htab->sgot; 2414 splt = htab->splt; 2415 sreloc = NULL; 2416 2417 rel = relocs; 2418 relend = relocs + input_section->reloc_count; 2419 for (; rel < relend; rel++) 2420 { 2421 int r_type; 2422 reloc_howto_type *howto; 2423 unsigned long r_symndx; 2424 struct elf_link_hash_entry *h; 2425 /* We can't modify r_addend here as elf_link_input_bfd has an assert to 2426 ensure it's zero (we use REL relocs, not RELA). Therefore this 2427 should be assigning zero to `addend', but for clarity we use 2428 `r_addend'. */ 2429 bfd_vma addend = rel->r_addend; 2430 bfd_vma offset = rel->r_offset; 2431 bfd_vma relocation; 2432 Elf_Internal_Sym *sym; 2433 asection *sec; 2434 const char *sym_name; 2435 bfd_reloc_status_type r; 2436 const char *errmsg = NULL; 2437 bfd_boolean use_rel = FALSE; 2438 2439 h = NULL; 2440 r_type = ELF32_R_TYPE (rel->r_info); 2441 if (r_type < 0 || r_type >= (int) R_M32R_max) 2442 { 2443 (*_bfd_error_handler) (_("%B: unknown relocation type %d"), 2444 input_bfd, 2445 (int) r_type); 2446 bfd_set_error (bfd_error_bad_value); 2447 ret = FALSE; 2448 continue; 2449 } 2450 2451 if ( r_type == R_M32R_GNU_VTENTRY 2452 || r_type == R_M32R_GNU_VTINHERIT 2453 || r_type == R_M32R_NONE 2454 || r_type == R_M32R_RELA_GNU_VTENTRY 2455 || r_type == R_M32R_RELA_GNU_VTINHERIT) 2456 continue; 2457 2458 if (r_type <= R_M32R_GNU_VTENTRY) 2459 use_rel = TRUE; 2460 2461 howto = m32r_elf_howto_table + r_type; 2462 r_symndx = ELF32_R_SYM (rel->r_info); 2463 2464 sym = NULL; 2465 sec = NULL; 2466 h = NULL; 2467 2468 if (r_symndx < symtab_hdr->sh_info) 2469 { 2470 /* Local symbol. */ 2471 sym = local_syms + r_symndx; 2472 sec = local_sections[r_symndx]; 2473 sym_name = "<local symbol>"; 2474 2475 if (!use_rel) 2476 { 2477 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel); 2478 addend = rel->r_addend; 2479 } 2480 else 2481 { 2482 relocation = (sec->output_section->vma 2483 + sec->output_offset 2484 + sym->st_value); 2485 } 2486 } 2487 else 2488 { 2489 /* External symbol. */ 2490 relocation = 0; 2491 2492 h = sym_hashes[r_symndx - symtab_hdr->sh_info]; 2493 while (h->root.type == bfd_link_hash_indirect 2494 || h->root.type == bfd_link_hash_warning) 2495 h = (struct elf_link_hash_entry *) h->root.u.i.link; 2496 sym_name = h->root.root.string; 2497 2498 if (h->root.type == bfd_link_hash_defined 2499 || h->root.type == bfd_link_hash_defweak) 2500 { 2501 bfd_boolean dyn; 2502 sec = h->root.u.def.section; 2503 2504 dyn = htab->root.dynamic_sections_created; 2505 sec = h->root.u.def.section; 2506 if (r_type == R_M32R_GOTPC24 2507 || (r_type == R_M32R_GOTPC_HI_ULO 2508 || r_type == R_M32R_GOTPC_HI_SLO 2509 || r_type == R_M32R_GOTPC_LO) 2510 || (r_type == R_M32R_26_PLTREL 2511 && h->plt.offset != (bfd_vma) -1) 2512 || ((r_type == R_M32R_GOT24 2513 || r_type == R_M32R_GOT16_HI_ULO 2514 || r_type == R_M32R_GOT16_HI_SLO 2515 || r_type == R_M32R_GOT16_LO) 2516 && WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 2517 info->shared, h) 2518 && (! info->shared 2519 || (! info->symbolic && h->dynindx != -1) 2520 || !h->def_regular)) 2521 || (info->shared 2522 && ((! info->symbolic && h->dynindx != -1) 2523 || !h->def_regular) 2524 && (((r_type == R_M32R_16_RELA 2525 || r_type == R_M32R_32_RELA 2526 || r_type == R_M32R_24_RELA 2527 || r_type == R_M32R_HI16_ULO_RELA 2528 || r_type == R_M32R_HI16_SLO_RELA 2529 || r_type == R_M32R_LO16_RELA) 2530 && !h->forced_local) 2531 || r_type == R_M32R_REL32 2532 || r_type == R_M32R_10_PCREL_RELA 2533 || r_type == R_M32R_18_PCREL_RELA 2534 || r_type == R_M32R_26_PCREL_RELA) 2535 && ((input_section->flags & SEC_ALLOC) != 0 2536 /* DWARF will emit R_M32R_16(24,32) relocations 2537 in its sections against symbols defined 2538 externally in shared libraries. We can't do 2539 anything with them here. */ 2540 || ((input_section->flags & SEC_DEBUGGING) != 0 2541 && h->def_dynamic)))) 2542 { 2543 /* In these cases, we don't need the relocation 2544 value. We check specially because in some 2545 obscure cases sec->output_section will be NULL. */ 2546 } 2547 else if (sec->output_section != NULL) 2548 relocation = (h->root.u.def.value 2549 + sec->output_section->vma 2550 + sec->output_offset); 2551 else if (!info->relocatable 2552 && (_bfd_elf_section_offset (output_bfd, info, 2553 input_section, 2554 rel->r_offset) 2555 != (bfd_vma) -1)) 2556 { 2557 (*_bfd_error_handler) 2558 (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"), 2559 input_bfd, 2560 input_section, 2561 (long) rel->r_offset, 2562 howto->name, 2563 h->root.root.string); 2564 } 2565 } 2566 else if (h->root.type == bfd_link_hash_undefweak) 2567 ; 2568 else if (info->unresolved_syms_in_objects == RM_IGNORE 2569 && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT) 2570 ; 2571 else if (!info->relocatable) 2572 { 2573 if (! ((*info->callbacks->undefined_symbol) 2574 (info, h->root.root.string, input_bfd, 2575 input_section, offset, 2576 (info->unresolved_syms_in_objects == RM_GENERATE_ERROR 2577 || ELF_ST_VISIBILITY (h->other))))) 2578 return FALSE; 2579 } 2580 } 2581 2582 if (sec != NULL && discarded_section (sec)) 2583 RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section, 2584 rel, 1, relend, howto, 0, contents); 2585 2586 if (info->relocatable && !use_rel) 2587 { 2588 /* This is a relocatable link. We don't have to change 2589 anything, unless the reloc is against a section symbol, 2590 in which case we have to adjust according to where the 2591 section symbol winds up in the output section. */ 2592 if (sym != NULL && ELF_ST_TYPE (sym->st_info) == STT_SECTION) 2593 rel->r_addend += sec->output_offset; 2594 continue; 2595 } 2596 2597 if (info->relocatable && use_rel) 2598 { 2599 /* This is a relocatable link. We don't have to change 2600 anything, unless the reloc is against a section symbol, 2601 in which case we have to adjust according to where the 2602 section symbol winds up in the output section. */ 2603 if (sym == NULL || ELF_ST_TYPE (sym->st_info) != STT_SECTION) 2604 continue; 2605 2606 addend += sec->output_offset; 2607 2608 /* If partial_inplace, we need to store any additional addend 2609 back in the section. */ 2610 if (! howto->partial_inplace) 2611 continue; 2612 /* ??? Here is a nice place to call a special_function 2613 like handler. */ 2614 if (r_type != R_M32R_HI16_SLO && r_type != R_M32R_HI16_ULO) 2615 r = _bfd_relocate_contents (howto, input_bfd, 2616 addend, contents + offset); 2617 else 2618 { 2619 Elf_Internal_Rela *lorel; 2620 2621 /* We allow an arbitrary number of HI16 relocs before the 2622 LO16 reloc. This permits gcc to emit the HI and LO relocs 2623 itself. */ 2624 for (lorel = rel + 1; 2625 (lorel < relend 2626 && (ELF32_R_TYPE (lorel->r_info) == R_M32R_HI16_SLO 2627 || ELF32_R_TYPE (lorel->r_info) == R_M32R_HI16_ULO)); 2628 lorel++) 2629 continue; 2630 if (lorel < relend 2631 && ELF32_R_TYPE (lorel->r_info) == R_M32R_LO16) 2632 { 2633 m32r_elf_relocate_hi16 (input_bfd, r_type, rel, lorel, 2634 contents, addend); 2635 r = bfd_reloc_ok; 2636 } 2637 else 2638 r = _bfd_relocate_contents (howto, input_bfd, 2639 addend, contents + offset); 2640 } 2641 } 2642 else 2643 { 2644 /* Sanity check the address. */ 2645 if (offset > high_address) 2646 { 2647 r = bfd_reloc_outofrange; 2648 goto check_reloc; 2649 } 2650 2651 switch ((int) r_type) 2652 { 2653 case R_M32R_GOTOFF: 2654 /* Relocation is relative to the start of the global offset 2655 table (for ld24 rx, #uimm24). eg access at label+addend 2656 2657 ld24 rx. #label@GOTOFF + addend 2658 sub rx, r12. */ 2659 2660 BFD_ASSERT (sgot != NULL); 2661 2662 relocation = -(relocation - sgot->output_section->vma); 2663 rel->r_addend = -rel->r_addend; 2664 break; 2665 2666 case R_M32R_GOTOFF_HI_ULO: 2667 case R_M32R_GOTOFF_HI_SLO: 2668 case R_M32R_GOTOFF_LO: 2669 BFD_ASSERT (sgot != NULL); 2670 2671 relocation -= sgot->output_section->vma; 2672 2673 if ((r_type == R_M32R_GOTOFF_HI_SLO) 2674 && ((relocation + rel->r_addend) & 0x8000)) 2675 rel->r_addend += 0x10000; 2676 break; 2677 2678 case R_M32R_GOTPC24: 2679 /* .got(_GLOBAL_OFFSET_TABLE_) - pc relocation 2680 ld24 rx,#_GLOBAL_OFFSET_TABLE_ 2681 */ 2682 relocation = sgot->output_section->vma; 2683 break; 2684 2685 case R_M32R_GOTPC_HI_ULO: 2686 case R_M32R_GOTPC_HI_SLO: 2687 case R_M32R_GOTPC_LO: 2688 { 2689 /* .got(_GLOBAL_OFFSET_TABLE_) - pc relocation 2690 bl .+4 2691 seth rx,#high(_GLOBAL_OFFSET_TABLE_) 2692 or3 rx,rx,#low(_GLOBAL_OFFSET_TABLE_ +4) 2693 or 2694 bl .+4 2695 seth rx,#shigh(_GLOBAL_OFFSET_TABLE_) 2696 add3 rx,rx,#low(_GLOBAL_OFFSET_TABLE_ +4) 2697 */ 2698 relocation = sgot->output_section->vma; 2699 relocation -= (input_section->output_section->vma 2700 + input_section->output_offset 2701 + rel->r_offset); 2702 if ((r_type == R_M32R_GOTPC_HI_SLO) 2703 && ((relocation + rel->r_addend) & 0x8000)) 2704 rel->r_addend += 0x10000; 2705 2706 break; 2707 } 2708 case R_M32R_GOT16_HI_ULO: 2709 case R_M32R_GOT16_HI_SLO: 2710 case R_M32R_GOT16_LO: 2711 /* Fall through. */ 2712 case R_M32R_GOT24: 2713 /* Relocation is to the entry for this symbol in the global 2714 offset table. */ 2715 BFD_ASSERT (sgot != NULL); 2716 2717 if (h != NULL) 2718 { 2719 bfd_boolean dyn; 2720 bfd_vma off; 2721 2722 off = h->got.offset; 2723 BFD_ASSERT (off != (bfd_vma) -1); 2724 2725 dyn = htab->root.dynamic_sections_created; 2726 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h) 2727 || (info->shared 2728 && (info->symbolic 2729 || h->dynindx == -1 2730 || h->forced_local) 2731 && h->def_regular)) 2732 { 2733 /* This is actually a static link, or it is a 2734 -Bsymbolic link and the symbol is defined 2735 locally, or the symbol was forced to be local 2736 because of a version file. We must initialize 2737 this entry in the global offset table. Since the 2738 offset must always be a multiple of 4, we use the 2739 least significant bit to record whether we have 2740 initialized it already. 2741 2742 When doing a dynamic link, we create a .rela.got 2743 relocation entry to initialize the value. This 2744 is done in the finish_dynamic_symbol routine. */ 2745 if ((off & 1) != 0) 2746 off &= ~1; 2747 else 2748 { 2749 bfd_put_32 (output_bfd, relocation, 2750 sgot->contents + off); 2751 h->got.offset |= 1; 2752 } 2753 } 2754 2755 relocation = sgot->output_offset + off; 2756 } 2757 else 2758 { 2759 bfd_vma off; 2760 bfd_byte *loc; 2761 2762 BFD_ASSERT (local_got_offsets != NULL 2763 && local_got_offsets[r_symndx] != (bfd_vma) -1); 2764 2765 off = local_got_offsets[r_symndx]; 2766 2767 /* The offset must always be a multiple of 4. We use 2768 the least significant bit to record whether we have 2769 already processed this entry. */ 2770 if ((off & 1) != 0) 2771 off &= ~1; 2772 else 2773 { 2774 bfd_put_32 (output_bfd, relocation, sgot->contents + off); 2775 2776 if (info->shared) 2777 { 2778 asection *srelgot; 2779 Elf_Internal_Rela outrel; 2780 2781 /* We need to generate a R_M32R_RELATIVE reloc 2782 for the dynamic linker. */ 2783 srelgot = bfd_get_linker_section (dynobj, 2784 ".rela.got"); 2785 BFD_ASSERT (srelgot != NULL); 2786 2787 outrel.r_offset = (sgot->output_section->vma 2788 + sgot->output_offset 2789 + off); 2790 outrel.r_info = ELF32_R_INFO (0, R_M32R_RELATIVE); 2791 outrel.r_addend = relocation; 2792 loc = srelgot->contents; 2793 loc += srelgot->reloc_count * sizeof (Elf32_External_Rela); 2794 bfd_elf32_swap_reloca_out (output_bfd, &outrel,loc); 2795 ++srelgot->reloc_count; 2796 } 2797 2798 local_got_offsets[r_symndx] |= 1; 2799 } 2800 2801 relocation = sgot->output_offset + off; 2802 } 2803 if ((r_type == R_M32R_GOT16_HI_SLO) 2804 && ((relocation + rel->r_addend) & 0x8000)) 2805 rel->r_addend += 0x10000; 2806 2807 break; 2808 2809 case R_M32R_26_PLTREL: 2810 /* Relocation is to the entry for this symbol in the 2811 procedure linkage table. */ 2812 2813 /* The native assembler will generate a 26_PLTREL reloc 2814 for a local symbol if you assemble a call from one 2815 section to another when using -K pic. */ 2816 if (h == NULL) 2817 break; 2818 2819 if (h->forced_local) 2820 break; 2821 2822 if (h->plt.offset == (bfd_vma) -1) 2823 /* We didn't make a PLT entry for this symbol. This 2824 happens when statically linking PIC code, or when 2825 using -Bsymbolic. */ 2826 break; 2827 2828 relocation = (splt->output_section->vma 2829 + splt->output_offset 2830 + h->plt.offset); 2831 break; 2832 2833 case R_M32R_HI16_SLO_RELA: 2834 if ((relocation + rel->r_addend) & 0x8000) 2835 rel->r_addend += 0x10000; 2836 /* Fall through. */ 2837 2838 case R_M32R_16_RELA: 2839 case R_M32R_24_RELA: 2840 case R_M32R_32_RELA: 2841 case R_M32R_REL32: 2842 case R_M32R_10_PCREL_RELA: 2843 case R_M32R_18_PCREL_RELA: 2844 case R_M32R_26_PCREL_RELA: 2845 case R_M32R_HI16_ULO_RELA: 2846 case R_M32R_LO16_RELA: 2847 if (info->shared 2848 && r_symndx != STN_UNDEF 2849 && (input_section->flags & SEC_ALLOC) != 0 2850 && (( r_type != R_M32R_10_PCREL_RELA 2851 && r_type != R_M32R_18_PCREL_RELA 2852 && r_type != R_M32R_26_PCREL_RELA 2853 && r_type != R_M32R_REL32) 2854 || (h != NULL 2855 && h->dynindx != -1 2856 && (! info->symbolic 2857 || !h->def_regular)))) 2858 { 2859 Elf_Internal_Rela outrel; 2860 bfd_boolean skip, relocate; 2861 bfd_byte *loc; 2862 2863 /* When generating a shared object, these relocations 2864 are copied into the output file to be resolved at run 2865 time. */ 2866 if (sreloc == NULL) 2867 { 2868 sreloc = _bfd_elf_get_dynamic_reloc_section 2869 (input_bfd, input_section, /*rela?*/ TRUE); 2870 if (sreloc == NULL) 2871 return FALSE; 2872 } 2873 2874 skip = FALSE; 2875 relocate = FALSE; 2876 2877 outrel.r_offset = _bfd_elf_section_offset (output_bfd, 2878 info, 2879 input_section, 2880 rel->r_offset); 2881 if (outrel.r_offset == (bfd_vma) -1) 2882 skip = TRUE; 2883 else if (outrel.r_offset == (bfd_vma) -2) 2884 skip = relocate = TRUE; 2885 outrel.r_offset += (input_section->output_section->vma 2886 + input_section->output_offset); 2887 2888 if (skip) 2889 memset (&outrel, 0, sizeof outrel); 2890 else if ( r_type == R_M32R_10_PCREL_RELA 2891 || r_type == R_M32R_18_PCREL_RELA 2892 || r_type == R_M32R_26_PCREL_RELA 2893 || r_type == R_M32R_REL32) 2894 { 2895 BFD_ASSERT (h != NULL && h->dynindx != -1); 2896 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type); 2897 outrel.r_addend = rel->r_addend; 2898 } 2899 else 2900 { 2901 /* h->dynindx may be -1 if this symbol was marked to 2902 become local. */ 2903 if (h == NULL 2904 || ((info->symbolic || h->dynindx == -1) 2905 && h->def_regular)) 2906 { 2907 relocate = TRUE; 2908 outrel.r_info = ELF32_R_INFO (0, R_M32R_RELATIVE); 2909 outrel.r_addend = relocation + rel->r_addend; 2910 } 2911 else 2912 { 2913 BFD_ASSERT (h->dynindx != -1); 2914 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type); 2915 outrel.r_addend = relocation + rel->r_addend; 2916 } 2917 } 2918 2919 loc = sreloc->contents; 2920 loc += sreloc->reloc_count * sizeof (Elf32_External_Rela); 2921 bfd_elf32_swap_reloca_out (output_bfd, &outrel,loc); 2922 ++sreloc->reloc_count; 2923 2924 /* If this reloc is against an external symbol, we do 2925 not want to fiddle with the addend. Otherwise, we 2926 need to include the symbol value so that it becomes 2927 an addend for the dynamic reloc. */ 2928 if (! relocate) 2929 continue; 2930 break; 2931 } 2932 else if (r_type != R_M32R_10_PCREL_RELA) 2933 break; 2934 /* Fall through. */ 2935 2936 case (int) R_M32R_10_PCREL : 2937 r = m32r_elf_do_10_pcrel_reloc (input_bfd, howto, input_section, 2938 contents, offset, 2939 sec, relocation, addend); 2940 goto check_reloc; 2941 2942 case (int) R_M32R_HI16_SLO : 2943 case (int) R_M32R_HI16_ULO : 2944 { 2945 Elf_Internal_Rela *lorel; 2946 2947 /* We allow an arbitrary number of HI16 relocs before the 2948 LO16 reloc. This permits gcc to emit the HI and LO relocs 2949 itself. */ 2950 for (lorel = rel + 1; 2951 (lorel < relend 2952 && (ELF32_R_TYPE (lorel->r_info) == R_M32R_HI16_SLO 2953 || ELF32_R_TYPE (lorel->r_info) == R_M32R_HI16_ULO)); 2954 lorel++) 2955 continue; 2956 if (lorel < relend 2957 && ELF32_R_TYPE (lorel->r_info) == R_M32R_LO16) 2958 { 2959 m32r_elf_relocate_hi16 (input_bfd, r_type, rel, lorel, 2960 contents, relocation + addend); 2961 r = bfd_reloc_ok; 2962 } 2963 else 2964 r = _bfd_final_link_relocate (howto, input_bfd, input_section, 2965 contents, offset, 2966 relocation, addend); 2967 } 2968 2969 goto check_reloc; 2970 2971 case (int) R_M32R_SDA16_RELA: 2972 case (int) R_M32R_SDA16 : 2973 { 2974 const char *name; 2975 2976 BFD_ASSERT (sec != NULL); 2977 name = bfd_get_section_name (sec->owner, sec); 2978 2979 if ( strcmp (name, ".sdata") == 0 2980 || strcmp (name, ".sbss") == 0 2981 || strcmp (name, ".scommon") == 0) 2982 { 2983 bfd_vma sda_base; 2984 bfd *out_bfd = sec->output_section->owner; 2985 2986 r = m32r_elf_final_sda_base (out_bfd, info, 2987 &errmsg, 2988 &sda_base); 2989 if (r != bfd_reloc_ok) 2990 { 2991 ret = FALSE; 2992 goto check_reloc; 2993 } 2994 2995 /* At this point `relocation' contains the object's 2996 address. */ 2997 relocation -= sda_base; 2998 /* Now it contains the offset from _SDA_BASE_. */ 2999 } 3000 else 3001 { 3002 (*_bfd_error_handler) 3003 (_("%B: The target (%s) of an %s relocation is in the wrong section (%A)"), 3004 input_bfd, 3005 sec, 3006 sym_name, 3007 m32r_elf_howto_table[(int) r_type].name); 3008 /*bfd_set_error (bfd_error_bad_value); ??? why? */ 3009 ret = FALSE; 3010 continue; 3011 } 3012 } 3013 /* Fall through. */ 3014 3015 default : /* OLD_M32R_RELOC */ 3016 3017 r = _bfd_final_link_relocate (howto, input_bfd, input_section, 3018 contents, offset, 3019 relocation, addend); 3020 goto check_reloc; 3021 } 3022 3023 r = _bfd_final_link_relocate (howto, input_bfd, input_section, 3024 contents, rel->r_offset, 3025 relocation, rel->r_addend); 3026 3027 } 3028 3029 check_reloc: 3030 3031 if (r != bfd_reloc_ok) 3032 { 3033 /* FIXME: This should be generic enough to go in a utility. */ 3034 const char *name; 3035 3036 if (h != NULL) 3037 name = h->root.root.string; 3038 else 3039 { 3040 name = (bfd_elf_string_from_elf_section 3041 (input_bfd, symtab_hdr->sh_link, sym->st_name)); 3042 if (name == NULL || *name == '\0') 3043 name = bfd_section_name (input_bfd, sec); 3044 } 3045 3046 if (errmsg != NULL) 3047 goto common_error; 3048 3049 switch (r) 3050 { 3051 case bfd_reloc_overflow: 3052 if (! ((*info->callbacks->reloc_overflow) 3053 (info, (h ? &h->root : NULL), name, howto->name, 3054 (bfd_vma) 0, input_bfd, input_section, offset))) 3055 return FALSE; 3056 break; 3057 3058 case bfd_reloc_undefined: 3059 if (! ((*info->callbacks->undefined_symbol) 3060 (info, name, input_bfd, input_section, 3061 offset, TRUE))) 3062 return FALSE; 3063 break; 3064 3065 case bfd_reloc_outofrange: 3066 errmsg = _("internal error: out of range error"); 3067 goto common_error; 3068 3069 case bfd_reloc_notsupported: 3070 errmsg = _("internal error: unsupported relocation error"); 3071 goto common_error; 3072 3073 case bfd_reloc_dangerous: 3074 errmsg = _("internal error: dangerous error"); 3075 goto common_error; 3076 3077 default: 3078 errmsg = _("internal error: unknown error"); 3079 /* fall through */ 3080 3081 common_error: 3082 if (!((*info->callbacks->warning) 3083 (info, errmsg, name, input_bfd, input_section, 3084 offset))) 3085 return FALSE; 3086 break; 3087 } 3088 } 3089 } 3090 3091 return ret; 3092 } 3093 3094 /* Finish up dynamic symbol handling. We set the contents of various 3095 dynamic sections here. */ 3096 3097 static bfd_boolean 3098 m32r_elf_finish_dynamic_symbol (bfd *output_bfd, 3099 struct bfd_link_info *info, 3100 struct elf_link_hash_entry *h, 3101 Elf_Internal_Sym *sym) 3102 { 3103 struct elf_m32r_link_hash_table *htab; 3104 bfd_byte *loc; 3105 3106 #ifdef DEBUG_PIC 3107 printf ("m32r_elf_finish_dynamic_symbol()\n"); 3108 #endif 3109 3110 htab = m32r_elf_hash_table (info); 3111 if (htab == NULL) 3112 return FALSE; 3113 3114 if (h->plt.offset != (bfd_vma) -1) 3115 { 3116 asection *splt; 3117 asection *sgot; 3118 asection *srela; 3119 3120 bfd_vma plt_index; 3121 bfd_vma got_offset; 3122 Elf_Internal_Rela rela; 3123 3124 /* This symbol has an entry in the procedure linkage table. Set 3125 it up. */ 3126 3127 BFD_ASSERT (h->dynindx != -1); 3128 3129 splt = htab->splt; 3130 sgot = htab->sgotplt; 3131 srela = htab->srelplt; 3132 BFD_ASSERT (splt != NULL && sgot != NULL && srela != NULL); 3133 3134 /* Get the index in the procedure linkage table which 3135 corresponds to this symbol. This is the index of this symbol 3136 in all the symbols for which we are making plt entries. The 3137 first entry in the procedure linkage table is reserved. */ 3138 plt_index = h->plt.offset / PLT_ENTRY_SIZE - 1; 3139 3140 /* Get the offset into the .got table of the entry that 3141 corresponds to this function. Each .got entry is 4 bytes. 3142 The first three are reserved. */ 3143 got_offset = (plt_index + 3) * 4; 3144 3145 /* Fill in the entry in the procedure linkage table. */ 3146 if (! info->shared) 3147 { 3148 bfd_put_32 (output_bfd, 3149 (PLT_ENTRY_WORD0b 3150 + (((sgot->output_section->vma 3151 + sgot->output_offset 3152 + got_offset) >> 16) & 0xffff)), 3153 splt->contents + h->plt.offset); 3154 bfd_put_32 (output_bfd, 3155 (PLT_ENTRY_WORD1b 3156 + ((sgot->output_section->vma 3157 + sgot->output_offset 3158 + got_offset) & 0xffff)), 3159 splt->contents + h->plt.offset + 4); 3160 bfd_put_32 (output_bfd, PLT_ENTRY_WORD2, 3161 splt->contents + h->plt.offset + 8); 3162 bfd_put_32 (output_bfd, 3163 (PLT_ENTRY_WORD3 3164 + plt_index * sizeof (Elf32_External_Rela)), 3165 splt->contents + h->plt.offset + 12); 3166 bfd_put_32 (output_bfd, 3167 (PLT_ENTRY_WORD4 3168 + (((unsigned int) ((- (h->plt.offset + 16)) >> 2)) & 0xffffff)), 3169 splt->contents + h->plt.offset + 16); 3170 } 3171 else 3172 { 3173 bfd_put_32 (output_bfd, 3174 PLT_ENTRY_WORD0 + got_offset, 3175 splt->contents + h->plt.offset); 3176 bfd_put_32 (output_bfd, PLT_ENTRY_WORD1, 3177 splt->contents + h->plt.offset + 4); 3178 bfd_put_32 (output_bfd, PLT_ENTRY_WORD2, 3179 splt->contents + h->plt.offset + 8); 3180 bfd_put_32 (output_bfd, 3181 (PLT_ENTRY_WORD3 3182 + plt_index * sizeof (Elf32_External_Rela)), 3183 splt->contents + h->plt.offset + 12); 3184 bfd_put_32 (output_bfd, 3185 (PLT_ENTRY_WORD4 3186 + (((unsigned int) ((- (h->plt.offset + 16)) >> 2)) & 0xffffff)), 3187 splt->contents + h->plt.offset + 16); 3188 } 3189 3190 /* Fill in the entry in the global offset table. */ 3191 bfd_put_32 (output_bfd, 3192 (splt->output_section->vma 3193 + splt->output_offset 3194 + h->plt.offset 3195 + 12), /* same offset */ 3196 sgot->contents + got_offset); 3197 3198 /* Fill in the entry in the .rela.plt section. */ 3199 rela.r_offset = (sgot->output_section->vma 3200 + sgot->output_offset 3201 + got_offset); 3202 rela.r_info = ELF32_R_INFO (h->dynindx, R_M32R_JMP_SLOT); 3203 rela.r_addend = 0; 3204 loc = srela->contents; 3205 loc += plt_index * sizeof (Elf32_External_Rela); 3206 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); 3207 3208 if (!h->def_regular) 3209 { 3210 /* Mark the symbol as undefined, rather than as defined in 3211 the .plt section. Leave the value alone. */ 3212 sym->st_shndx = SHN_UNDEF; 3213 } 3214 } 3215 3216 if (h->got.offset != (bfd_vma) -1) 3217 { 3218 asection *sgot; 3219 asection *srela; 3220 Elf_Internal_Rela rela; 3221 3222 /* This symbol has an entry in the global offset table. Set it 3223 up. */ 3224 3225 sgot = htab->sgot; 3226 srela = htab->srelgot; 3227 BFD_ASSERT (sgot != NULL && srela != NULL); 3228 3229 rela.r_offset = (sgot->output_section->vma 3230 + sgot->output_offset 3231 + (h->got.offset &~ 1)); 3232 3233 /* If this is a -Bsymbolic link, and the symbol is defined 3234 locally, we just want to emit a RELATIVE reloc. Likewise if 3235 the symbol was forced to be local because of a version file. 3236 The entry in the global offset table will already have been 3237 initialized in the relocate_section function. */ 3238 if (info->shared 3239 && (info->symbolic 3240 || h->dynindx == -1 3241 || h->forced_local) 3242 && h->def_regular) 3243 { 3244 rela.r_info = ELF32_R_INFO (0, R_M32R_RELATIVE); 3245 rela.r_addend = (h->root.u.def.value 3246 + h->root.u.def.section->output_section->vma 3247 + h->root.u.def.section->output_offset); 3248 } 3249 else 3250 { 3251 BFD_ASSERT ((h->got.offset & 1) == 0); 3252 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + h->got.offset); 3253 rela.r_info = ELF32_R_INFO (h->dynindx, R_M32R_GLOB_DAT); 3254 rela.r_addend = 0; 3255 } 3256 3257 loc = srela->contents; 3258 loc += srela->reloc_count * sizeof (Elf32_External_Rela); 3259 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); 3260 ++srela->reloc_count; 3261 } 3262 3263 if (h->needs_copy) 3264 { 3265 asection *s; 3266 Elf_Internal_Rela rela; 3267 3268 /* This symbols needs a copy reloc. Set it up. */ 3269 3270 BFD_ASSERT (h->dynindx != -1 3271 && (h->root.type == bfd_link_hash_defined 3272 || h->root.type == bfd_link_hash_defweak)); 3273 3274 s = bfd_get_linker_section (htab->root.dynobj, ".rela.bss"); 3275 BFD_ASSERT (s != NULL); 3276 3277 rela.r_offset = (h->root.u.def.value 3278 + h->root.u.def.section->output_section->vma 3279 + h->root.u.def.section->output_offset); 3280 rela.r_info = ELF32_R_INFO (h->dynindx, R_M32R_COPY); 3281 rela.r_addend = 0; 3282 loc = s->contents; 3283 loc += s->reloc_count * sizeof (Elf32_External_Rela); 3284 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); 3285 ++s->reloc_count; 3286 } 3287 3288 /* Mark some specially defined symbols as absolute. */ 3289 if (h == htab->root.hdynamic || h == htab->root.hgot) 3290 sym->st_shndx = SHN_ABS; 3291 3292 return TRUE; 3293 } 3294 3295 3296 /* Finish up the dynamic sections. */ 3297 3298 static bfd_boolean 3299 m32r_elf_finish_dynamic_sections (bfd *output_bfd, 3300 struct bfd_link_info *info) 3301 { 3302 struct elf_m32r_link_hash_table *htab; 3303 bfd *dynobj; 3304 asection *sdyn; 3305 asection *sgot; 3306 3307 #ifdef DEBUG_PIC 3308 printf ("m32r_elf_finish_dynamic_sections()\n"); 3309 #endif 3310 3311 htab = m32r_elf_hash_table (info); 3312 if (htab == NULL) 3313 return FALSE; 3314 3315 dynobj = htab->root.dynobj; 3316 3317 sgot = htab->sgotplt; 3318 sdyn = bfd_get_linker_section (dynobj, ".dynamic"); 3319 3320 if (htab->root.dynamic_sections_created) 3321 { 3322 asection *splt; 3323 Elf32_External_Dyn *dyncon, *dynconend; 3324 3325 BFD_ASSERT (sgot != NULL && sdyn != NULL); 3326 3327 dyncon = (Elf32_External_Dyn *) sdyn->contents; 3328 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size); 3329 3330 for (; dyncon < dynconend; dyncon++) 3331 { 3332 Elf_Internal_Dyn dyn; 3333 asection *s; 3334 3335 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn); 3336 3337 switch (dyn.d_tag) 3338 { 3339 default: 3340 break; 3341 3342 case DT_PLTGOT: 3343 s = htab->sgot->output_section; 3344 goto get_vma; 3345 case DT_JMPREL: 3346 s = htab->srelplt->output_section; 3347 get_vma: 3348 BFD_ASSERT (s != NULL); 3349 dyn.d_un.d_ptr = s->vma; 3350 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); 3351 break; 3352 3353 case DT_PLTRELSZ: 3354 s = htab->srelplt->output_section; 3355 BFD_ASSERT (s != NULL); 3356 dyn.d_un.d_val = s->size; 3357 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); 3358 break; 3359 3360 case DT_RELASZ: 3361 /* My reading of the SVR4 ABI indicates that the 3362 procedure linkage table relocs (DT_JMPREL) should be 3363 included in the overall relocs (DT_RELA). This is 3364 what Solaris does. However, UnixWare can not handle 3365 that case. Therefore, we override the DT_RELASZ entry 3366 here to make it not include the JMPREL relocs. Since 3367 the linker script arranges for .rela.plt to follow all 3368 other relocation sections, we don't have to worry 3369 about changing the DT_RELA entry. */ 3370 if (htab->srelplt != NULL) 3371 { 3372 s = htab->srelplt->output_section; 3373 dyn.d_un.d_val -= s->size; 3374 } 3375 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); 3376 break; 3377 } 3378 } 3379 3380 /* Fill in the first entry in the procedure linkage table. */ 3381 splt = htab->splt; 3382 if (splt && splt->size > 0) 3383 { 3384 if (info->shared) 3385 { 3386 bfd_put_32 (output_bfd, PLT0_PIC_ENTRY_WORD0, splt->contents); 3387 bfd_put_32 (output_bfd, PLT0_PIC_ENTRY_WORD1, splt->contents + 4); 3388 bfd_put_32 (output_bfd, PLT0_PIC_ENTRY_WORD2, splt->contents + 8); 3389 bfd_put_32 (output_bfd, PLT0_PIC_ENTRY_WORD3, splt->contents + 12); 3390 bfd_put_32 (output_bfd, PLT0_PIC_ENTRY_WORD4, splt->contents + 16); 3391 } 3392 else 3393 { 3394 unsigned long addr; 3395 /* addr = .got + 4 */ 3396 addr = sgot->output_section->vma + sgot->output_offset + 4; 3397 bfd_put_32 (output_bfd, 3398 PLT0_ENTRY_WORD0 | ((addr >> 16) & 0xffff), 3399 splt->contents); 3400 bfd_put_32 (output_bfd, 3401 PLT0_ENTRY_WORD1 | (addr & 0xffff), 3402 splt->contents + 4); 3403 bfd_put_32 (output_bfd, PLT0_ENTRY_WORD2, splt->contents + 8); 3404 bfd_put_32 (output_bfd, PLT0_ENTRY_WORD3, splt->contents + 12); 3405 bfd_put_32 (output_bfd, PLT0_ENTRY_WORD4, splt->contents + 16); 3406 } 3407 3408 elf_section_data (splt->output_section)->this_hdr.sh_entsize = 3409 PLT_ENTRY_SIZE; 3410 } 3411 } 3412 3413 /* Fill in the first three entries in the global offset table. */ 3414 if (sgot && sgot->size > 0) 3415 { 3416 if (sdyn == NULL) 3417 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents); 3418 else 3419 bfd_put_32 (output_bfd, 3420 sdyn->output_section->vma + sdyn->output_offset, 3421 sgot->contents); 3422 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 4); 3423 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 8); 3424 3425 elf_section_data (sgot->output_section)->this_hdr.sh_entsize = 4; 3426 } 3427 3428 return TRUE; 3429 } 3430 3431 3432 /* Set the right machine number. */ 3433 3434 static bfd_boolean 3435 m32r_elf_object_p (bfd *abfd) 3436 { 3437 switch (elf_elfheader (abfd)->e_flags & EF_M32R_ARCH) 3438 { 3439 default: 3440 case E_M32R_ARCH: (void) bfd_default_set_arch_mach (abfd, bfd_arch_m32r, bfd_mach_m32r); break; 3441 case E_M32RX_ARCH: (void) bfd_default_set_arch_mach (abfd, bfd_arch_m32r, bfd_mach_m32rx); break; 3442 case E_M32R2_ARCH: (void) bfd_default_set_arch_mach (abfd, bfd_arch_m32r, bfd_mach_m32r2); break; 3443 } 3444 return TRUE; 3445 } 3446 3447 /* Store the machine number in the flags field. */ 3448 3449 static void 3450 m32r_elf_final_write_processing (bfd *abfd, 3451 bfd_boolean linker ATTRIBUTE_UNUSED) 3452 { 3453 unsigned long val; 3454 3455 switch (bfd_get_mach (abfd)) 3456 { 3457 default: 3458 case bfd_mach_m32r: val = E_M32R_ARCH; break; 3459 case bfd_mach_m32rx: val = E_M32RX_ARCH; break; 3460 case bfd_mach_m32r2: val = E_M32R2_ARCH; break; 3461 } 3462 3463 elf_elfheader (abfd)->e_flags &=~ EF_M32R_ARCH; 3464 elf_elfheader (abfd)->e_flags |= val; 3465 } 3466 3467 /* Function to keep M32R specific file flags. */ 3468 3469 static bfd_boolean 3470 m32r_elf_set_private_flags (bfd *abfd, flagword flags) 3471 { 3472 BFD_ASSERT (!elf_flags_init (abfd) 3473 || elf_elfheader (abfd)->e_flags == flags); 3474 3475 elf_elfheader (abfd)->e_flags = flags; 3476 elf_flags_init (abfd) = TRUE; 3477 return TRUE; 3478 } 3479 3480 /* Merge backend specific data from an object file to the output 3481 object file when linking. */ 3482 3483 static bfd_boolean 3484 m32r_elf_merge_private_bfd_data (bfd *ibfd, bfd *obfd) 3485 { 3486 flagword out_flags; 3487 flagword in_flags; 3488 3489 if ( bfd_get_flavour (ibfd) != bfd_target_elf_flavour 3490 || bfd_get_flavour (obfd) != bfd_target_elf_flavour) 3491 return TRUE; 3492 3493 in_flags = elf_elfheader (ibfd)->e_flags; 3494 out_flags = elf_elfheader (obfd)->e_flags; 3495 3496 if (! elf_flags_init (obfd)) 3497 { 3498 /* If the input is the default architecture then do not 3499 bother setting the flags for the output architecture, 3500 instead allow future merges to do this. If no future 3501 merges ever set these flags then they will retain their 3502 unitialised values, which surprise surprise, correspond 3503 to the default values. */ 3504 if (bfd_get_arch_info (ibfd)->the_default) 3505 return TRUE; 3506 3507 elf_flags_init (obfd) = TRUE; 3508 elf_elfheader (obfd)->e_flags = in_flags; 3509 3510 if (bfd_get_arch (obfd) == bfd_get_arch (ibfd) 3511 && bfd_get_arch_info (obfd)->the_default) 3512 return bfd_set_arch_mach (obfd, bfd_get_arch (ibfd), 3513 bfd_get_mach (ibfd)); 3514 3515 return TRUE; 3516 } 3517 3518 /* Check flag compatibility. */ 3519 if (in_flags == out_flags) 3520 return TRUE; 3521 3522 if ((in_flags & EF_M32R_ARCH) != (out_flags & EF_M32R_ARCH)) 3523 { 3524 if ( ((in_flags & EF_M32R_ARCH) != E_M32R_ARCH) 3525 || ((out_flags & EF_M32R_ARCH) == E_M32R_ARCH) 3526 || ((in_flags & EF_M32R_ARCH) == E_M32R2_ARCH)) 3527 { 3528 (*_bfd_error_handler) 3529 (_("%B: Instruction set mismatch with previous modules"), ibfd); 3530 3531 bfd_set_error (bfd_error_bad_value); 3532 return FALSE; 3533 } 3534 } 3535 3536 return TRUE; 3537 } 3538 3539 /* Display the flags field. */ 3540 3541 static bfd_boolean 3542 m32r_elf_print_private_bfd_data (bfd *abfd, void * ptr) 3543 { 3544 FILE * file = (FILE *) ptr; 3545 3546 BFD_ASSERT (abfd != NULL && ptr != NULL); 3547 3548 _bfd_elf_print_private_bfd_data (abfd, ptr); 3549 3550 fprintf (file, _("private flags = %lx"), elf_elfheader (abfd)->e_flags); 3551 3552 switch (elf_elfheader (abfd)->e_flags & EF_M32R_ARCH) 3553 { 3554 default: 3555 case E_M32R_ARCH: fprintf (file, _(": m32r instructions")); break; 3556 case E_M32RX_ARCH: fprintf (file, _(": m32rx instructions")); break; 3557 case E_M32R2_ARCH: fprintf (file, _(": m32r2 instructions")); break; 3558 } 3559 3560 fputc ('\n', file); 3561 3562 return TRUE; 3563 } 3564 3565 static asection * 3566 m32r_elf_gc_mark_hook (asection *sec, 3567 struct bfd_link_info *info, 3568 Elf_Internal_Rela *rel, 3569 struct elf_link_hash_entry *h, 3570 Elf_Internal_Sym *sym) 3571 { 3572 if (h != NULL) 3573 switch (ELF32_R_TYPE (rel->r_info)) 3574 { 3575 case R_M32R_GNU_VTINHERIT: 3576 case R_M32R_GNU_VTENTRY: 3577 case R_M32R_RELA_GNU_VTINHERIT: 3578 case R_M32R_RELA_GNU_VTENTRY: 3579 return NULL; 3580 } 3581 3582 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym); 3583 } 3584 3585 static bfd_boolean 3586 m32r_elf_gc_sweep_hook (bfd *abfd ATTRIBUTE_UNUSED, 3587 struct bfd_link_info *info ATTRIBUTE_UNUSED, 3588 asection *sec ATTRIBUTE_UNUSED, 3589 const Elf_Internal_Rela *relocs ATTRIBUTE_UNUSED) 3590 { 3591 /* Update the got entry reference counts for the section being removed. */ 3592 Elf_Internal_Shdr *symtab_hdr; 3593 struct elf_link_hash_entry **sym_hashes; 3594 bfd_signed_vma *local_got_refcounts; 3595 const Elf_Internal_Rela *rel, *relend; 3596 3597 if (info->relocatable) 3598 return TRUE; 3599 3600 elf_section_data (sec)->local_dynrel = NULL; 3601 3602 symtab_hdr = &elf_tdata (abfd)->symtab_hdr; 3603 sym_hashes = elf_sym_hashes (abfd); 3604 local_got_refcounts = elf_local_got_refcounts (abfd); 3605 3606 relend = relocs + sec->reloc_count; 3607 for (rel = relocs; rel < relend; rel++) 3608 { 3609 unsigned long r_symndx; 3610 struct elf_link_hash_entry *h = NULL; 3611 3612 r_symndx = ELF32_R_SYM (rel->r_info); 3613 if (r_symndx >= symtab_hdr->sh_info) 3614 { 3615 h = sym_hashes[r_symndx - symtab_hdr->sh_info]; 3616 while (h->root.type == bfd_link_hash_indirect 3617 || h->root.type == bfd_link_hash_warning) 3618 h = (struct elf_link_hash_entry *) h->root.u.i.link; 3619 } 3620 3621 switch (ELF32_R_TYPE (rel->r_info)) 3622 { 3623 case R_M32R_GOT16_HI_ULO: 3624 case R_M32R_GOT16_HI_SLO: 3625 case R_M32R_GOT16_LO: 3626 case R_M32R_GOTOFF: 3627 case R_M32R_GOTOFF_HI_ULO: 3628 case R_M32R_GOTOFF_HI_SLO: 3629 case R_M32R_GOTOFF_LO: 3630 case R_M32R_GOT24: 3631 case R_M32R_GOTPC_HI_ULO: 3632 case R_M32R_GOTPC_HI_SLO: 3633 case R_M32R_GOTPC_LO: 3634 case R_M32R_GOTPC24: 3635 if (h != NULL) 3636 { 3637 if (h->got.refcount > 0) 3638 h->got.refcount--; 3639 } 3640 else 3641 { 3642 if (local_got_refcounts && local_got_refcounts[r_symndx] > 0) 3643 local_got_refcounts[r_symndx]--; 3644 } 3645 break; 3646 3647 case R_M32R_16_RELA: 3648 case R_M32R_24_RELA: 3649 case R_M32R_32_RELA: 3650 case R_M32R_REL32: 3651 case R_M32R_HI16_ULO_RELA: 3652 case R_M32R_HI16_SLO_RELA: 3653 case R_M32R_LO16_RELA: 3654 case R_M32R_SDA16_RELA: 3655 case R_M32R_10_PCREL_RELA: 3656 case R_M32R_18_PCREL_RELA: 3657 case R_M32R_26_PCREL_RELA: 3658 if (h != NULL) 3659 { 3660 struct elf_m32r_link_hash_entry *eh; 3661 struct elf_m32r_dyn_relocs **pp; 3662 struct elf_m32r_dyn_relocs *p; 3663 3664 if (!info->shared && h->plt.refcount > 0) 3665 h->plt.refcount -= 1; 3666 3667 eh = (struct elf_m32r_link_hash_entry *) h; 3668 3669 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next) 3670 if (p->sec == sec) 3671 { 3672 if ( ELF32_R_TYPE (rel->r_info) == R_M32R_26_PCREL_RELA 3673 || ELF32_R_TYPE (rel->r_info) == R_M32R_18_PCREL_RELA 3674 || ELF32_R_TYPE (rel->r_info) == R_M32R_10_PCREL_RELA 3675 || ELF32_R_TYPE (rel->r_info) == R_M32R_REL32) 3676 p->pc_count -= 1; 3677 p->count -= 1; 3678 if (p->count == 0) 3679 *pp = p->next; 3680 break; 3681 } 3682 } 3683 break; 3684 3685 case R_M32R_26_PLTREL: 3686 if (h != NULL) 3687 { 3688 if (h->plt.refcount > 0) 3689 h->plt.refcount--; 3690 } 3691 break; 3692 3693 default: 3694 break; 3695 } 3696 } 3697 3698 return TRUE; 3699 } 3700 3701 /* Look through the relocs for a section during the first phase. 3702 Since we don't do .gots or .plts, we just need to consider the 3703 virtual table relocs for gc. */ 3704 3705 static bfd_boolean 3706 m32r_elf_check_relocs (bfd *abfd, 3707 struct bfd_link_info *info, 3708 asection *sec, 3709 const Elf_Internal_Rela *relocs) 3710 { 3711 Elf_Internal_Shdr *symtab_hdr; 3712 struct elf_link_hash_entry **sym_hashes; 3713 const Elf_Internal_Rela *rel; 3714 const Elf_Internal_Rela *rel_end; 3715 struct elf_m32r_link_hash_table *htab; 3716 bfd *dynobj; 3717 asection *sreloc; 3718 3719 if (info->relocatable) 3720 return TRUE; 3721 3722 sreloc = NULL; 3723 symtab_hdr = &elf_tdata (abfd)->symtab_hdr; 3724 sym_hashes = elf_sym_hashes (abfd); 3725 3726 htab = m32r_elf_hash_table (info); 3727 if (htab == NULL) 3728 return FALSE; 3729 3730 dynobj = htab->root.dynobj; 3731 3732 rel_end = relocs + sec->reloc_count; 3733 for (rel = relocs; rel < rel_end; rel++) 3734 { 3735 int r_type; 3736 struct elf_link_hash_entry *h; 3737 unsigned long r_symndx; 3738 3739 r_symndx = ELF32_R_SYM (rel->r_info); 3740 r_type = ELF32_R_TYPE (rel->r_info); 3741 if (r_symndx < symtab_hdr->sh_info) 3742 h = NULL; 3743 else 3744 { 3745 h = sym_hashes[r_symndx - symtab_hdr->sh_info]; 3746 while (h->root.type == bfd_link_hash_indirect 3747 || h->root.type == bfd_link_hash_warning) 3748 h = (struct elf_link_hash_entry *) h->root.u.i.link; 3749 3750 /* PR15323, ref flags aren't set for references in the same 3751 object. */ 3752 h->root.non_ir_ref = 1; 3753 } 3754 3755 /* Some relocs require a global offset table. */ 3756 if (htab->sgot == NULL) 3757 { 3758 switch (r_type) 3759 { 3760 case R_M32R_GOT16_HI_ULO: 3761 case R_M32R_GOT16_HI_SLO: 3762 case R_M32R_GOTOFF: 3763 case R_M32R_GOTOFF_HI_ULO: 3764 case R_M32R_GOTOFF_HI_SLO: 3765 case R_M32R_GOTOFF_LO: 3766 case R_M32R_GOT16_LO: 3767 case R_M32R_GOTPC24: 3768 case R_M32R_GOTPC_HI_ULO: 3769 case R_M32R_GOTPC_HI_SLO: 3770 case R_M32R_GOTPC_LO: 3771 case R_M32R_GOT24: 3772 if (dynobj == NULL) 3773 htab->root.dynobj = dynobj = abfd; 3774 if (! create_got_section (dynobj, info)) 3775 return FALSE; 3776 break; 3777 3778 default: 3779 break; 3780 } 3781 } 3782 3783 switch (r_type) 3784 { 3785 case R_M32R_GOT16_HI_ULO: 3786 case R_M32R_GOT16_HI_SLO: 3787 case R_M32R_GOT16_LO: 3788 case R_M32R_GOT24: 3789 3790 if (h != NULL) 3791 h->got.refcount += 1; 3792 else 3793 { 3794 bfd_signed_vma *local_got_refcounts; 3795 3796 /* This is a global offset table entry for a local 3797 symbol. */ 3798 local_got_refcounts = elf_local_got_refcounts (abfd); 3799 if (local_got_refcounts == NULL) 3800 { 3801 bfd_size_type size; 3802 3803 size = symtab_hdr->sh_info; 3804 size *= sizeof (bfd_signed_vma); 3805 local_got_refcounts = bfd_zalloc (abfd, size); 3806 if (local_got_refcounts == NULL) 3807 return FALSE; 3808 elf_local_got_refcounts (abfd) = local_got_refcounts; 3809 } 3810 local_got_refcounts[r_symndx] += 1; 3811 } 3812 break; 3813 3814 case R_M32R_26_PLTREL: 3815 /* This symbol requires a procedure linkage table entry. We 3816 actually build the entry in adjust_dynamic_symbol, 3817 because this might be a case of linking PIC code without 3818 linking in any dynamic objects, in which case we don't 3819 need to generate a procedure linkage table after all. */ 3820 3821 /* If this is a local symbol, we resolve it directly without 3822 creating a procedure linkage table entry. */ 3823 if (h == NULL) 3824 continue; 3825 3826 if (h->forced_local) 3827 break; 3828 3829 h->needs_plt = 1; 3830 h->plt.refcount += 1; 3831 break; 3832 3833 case R_M32R_16_RELA: 3834 case R_M32R_24_RELA: 3835 case R_M32R_32_RELA: 3836 case R_M32R_REL32: 3837 case R_M32R_HI16_ULO_RELA: 3838 case R_M32R_HI16_SLO_RELA: 3839 case R_M32R_LO16_RELA: 3840 case R_M32R_SDA16_RELA: 3841 case R_M32R_10_PCREL_RELA: 3842 case R_M32R_18_PCREL_RELA: 3843 case R_M32R_26_PCREL_RELA: 3844 3845 if (h != NULL && !info->shared) 3846 { 3847 h->non_got_ref = 1; 3848 h->plt.refcount += 1; 3849 } 3850 3851 /* If we are creating a shared library, and this is a reloc 3852 against a global symbol, or a non PC relative reloc 3853 against a local symbol, then we need to copy the reloc 3854 into the shared library. However, if we are linking with 3855 -Bsymbolic, we do not need to copy a reloc against a 3856 global symbol which is defined in an object we are 3857 including in the link (i.e., DEF_REGULAR is set). At 3858 this point we have not seen all the input files, so it is 3859 possible that DEF_REGULAR is not set now but will be set 3860 later (it is never cleared). We account for that 3861 possibility below by storing information in the 3862 dyn_relocs field of the hash table entry. A similar 3863 situation occurs when creating shared libraries and symbol 3864 visibility changes render the symbol local. 3865 3866 If on the other hand, we are creating an executable, we 3867 may need to keep relocations for symbols satisfied by a 3868 dynamic library if we manage to avoid copy relocs for the 3869 symbol. */ 3870 if ((info->shared 3871 && (sec->flags & SEC_ALLOC) != 0 3872 && (( r_type != R_M32R_26_PCREL_RELA 3873 && r_type != R_M32R_18_PCREL_RELA 3874 && r_type != R_M32R_10_PCREL_RELA 3875 && r_type != R_M32R_REL32) 3876 || (h != NULL 3877 && (! info->symbolic 3878 || h->root.type == bfd_link_hash_defweak 3879 || !h->def_regular)))) 3880 || (!info->shared 3881 && (sec->flags & SEC_ALLOC) != 0 3882 && h != NULL 3883 && (h->root.type == bfd_link_hash_defweak 3884 || !h->def_regular))) 3885 { 3886 struct elf_m32r_dyn_relocs *p; 3887 struct elf_m32r_dyn_relocs **head; 3888 3889 if (dynobj == NULL) 3890 htab->root.dynobj = dynobj = abfd; 3891 3892 /* When creating a shared object, we must copy these 3893 relocs into the output file. We create a reloc 3894 section in dynobj and make room for the reloc. */ 3895 if (sreloc == NULL) 3896 { 3897 sreloc = _bfd_elf_make_dynamic_reloc_section 3898 (sec, dynobj, 2, abfd, /*rela?*/ TRUE); 3899 3900 if (sreloc == NULL) 3901 return FALSE; 3902 } 3903 3904 /* If this is a global symbol, we count the number of 3905 relocations we need for this symbol. */ 3906 if (h != NULL) 3907 head = &((struct elf_m32r_link_hash_entry *) h)->dyn_relocs; 3908 else 3909 { 3910 /* Track dynamic relocs needed for local syms too. */ 3911 asection *s; 3912 void *vpp; 3913 Elf_Internal_Sym *isym; 3914 3915 isym = bfd_sym_from_r_symndx (&htab->sym_cache, 3916 abfd, r_symndx); 3917 if (isym == NULL) 3918 return FALSE; 3919 3920 s = bfd_section_from_elf_index (abfd, isym->st_shndx); 3921 if (s == NULL) 3922 s = sec; 3923 3924 vpp = &elf_section_data (s)->local_dynrel; 3925 head = (struct elf_m32r_dyn_relocs **) vpp; 3926 } 3927 3928 p = *head; 3929 if (p == NULL || p->sec != sec) 3930 { 3931 bfd_size_type amt = sizeof (*p); 3932 3933 p = bfd_alloc (dynobj, amt); 3934 if (p == NULL) 3935 return FALSE; 3936 p->next = *head; 3937 *head = p; 3938 p->sec = sec; 3939 p->count = 0; 3940 p->pc_count = 0; 3941 } 3942 3943 p->count += 1; 3944 if ( ELF32_R_TYPE (rel->r_info) == R_M32R_26_PCREL_RELA 3945 || ELF32_R_TYPE (rel->r_info) == R_M32R_18_PCREL_RELA 3946 || ELF32_R_TYPE (rel->r_info) == R_M32R_10_PCREL_RELA 3947 || ELF32_R_TYPE (rel->r_info) == R_M32R_REL32) 3948 p->pc_count += 1; 3949 } 3950 break; 3951 3952 /* This relocation describes the C++ object vtable hierarchy. 3953 Reconstruct it for later use during GC. */ 3954 case R_M32R_RELA_GNU_VTINHERIT: 3955 case R_M32R_GNU_VTINHERIT: 3956 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset)) 3957 return FALSE; 3958 break; 3959 3960 /* This relocation describes which C++ vtable entries are actually 3961 used. Record for later use during GC. */ 3962 case R_M32R_GNU_VTENTRY: 3963 BFD_ASSERT (h != NULL); 3964 if (h != NULL 3965 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_offset)) 3966 return FALSE; 3967 break; 3968 case R_M32R_RELA_GNU_VTENTRY: 3969 BFD_ASSERT (h != NULL); 3970 if (h != NULL 3971 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend)) 3972 return FALSE; 3973 break; 3974 } 3975 } 3976 3977 return TRUE; 3978 } 3979 3980 static const struct bfd_elf_special_section m32r_elf_special_sections[] = 3981 { 3982 { STRING_COMMA_LEN (".sbss"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE }, 3983 { STRING_COMMA_LEN (".sdata"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, 3984 { NULL, 0, 0, 0, 0 } 3985 }; 3986 3987 static enum elf_reloc_type_class 3988 m32r_elf_reloc_type_class (const struct bfd_link_info *info ATTRIBUTE_UNUSED, 3989 const asection *rel_sec ATTRIBUTE_UNUSED, 3990 const Elf_Internal_Rela *rela) 3991 { 3992 switch ((int) ELF32_R_TYPE (rela->r_info)) 3993 { 3994 case R_M32R_RELATIVE: return reloc_class_relative; 3995 case R_M32R_JMP_SLOT: return reloc_class_plt; 3996 case R_M32R_COPY: return reloc_class_copy; 3997 default: return reloc_class_normal; 3998 } 3999 } 4000 4001 #define ELF_ARCH bfd_arch_m32r 4002 #define ELF_TARGET_ID M32R_ELF_DATA 4003 #define ELF_MACHINE_CODE EM_M32R 4004 #define ELF_MACHINE_ALT1 EM_CYGNUS_M32R 4005 #define ELF_MAXPAGESIZE 0x1 /* Explicitly requested by Mitsubishi. */ 4006 4007 #define TARGET_BIG_SYM bfd_elf32_m32r_vec 4008 #define TARGET_BIG_NAME "elf32-m32r" 4009 #define TARGET_LITTLE_SYM bfd_elf32_m32rle_vec 4010 #define TARGET_LITTLE_NAME "elf32-m32rle" 4011 4012 #define elf_info_to_howto m32r_info_to_howto 4013 #define elf_info_to_howto_rel m32r_info_to_howto_rel 4014 #define elf_backend_section_from_bfd_section _bfd_m32r_elf_section_from_bfd_section 4015 #define elf_backend_symbol_processing _bfd_m32r_elf_symbol_processing 4016 #define elf_backend_add_symbol_hook m32r_elf_add_symbol_hook 4017 #define elf_backend_relocate_section m32r_elf_relocate_section 4018 #define elf_backend_gc_mark_hook m32r_elf_gc_mark_hook 4019 #define elf_backend_gc_sweep_hook m32r_elf_gc_sweep_hook 4020 #define elf_backend_check_relocs m32r_elf_check_relocs 4021 4022 #define elf_backend_create_dynamic_sections m32r_elf_create_dynamic_sections 4023 #define bfd_elf32_bfd_link_hash_table_create m32r_elf_link_hash_table_create 4024 #define elf_backend_size_dynamic_sections m32r_elf_size_dynamic_sections 4025 #define elf_backend_omit_section_dynsym \ 4026 ((bfd_boolean (*) (bfd *, struct bfd_link_info *, asection *)) bfd_true) 4027 #define elf_backend_finish_dynamic_sections m32r_elf_finish_dynamic_sections 4028 #define elf_backend_adjust_dynamic_symbol m32r_elf_adjust_dynamic_symbol 4029 #define elf_backend_finish_dynamic_symbol m32r_elf_finish_dynamic_symbol 4030 #define elf_backend_reloc_type_class m32r_elf_reloc_type_class 4031 #define elf_backend_copy_indirect_symbol m32r_elf_copy_indirect_symbol 4032 4033 #define elf_backend_can_gc_sections 1 4034 /*#if !USE_REL 4035 #define elf_backend_rela_normal 1 4036 #endif*/ 4037 #define elf_backend_can_refcount 1 4038 #define elf_backend_want_got_plt 1 4039 #define elf_backend_plt_readonly 1 4040 #define elf_backend_want_plt_sym 0 4041 #define elf_backend_got_header_size 12 4042 4043 #define elf_backend_may_use_rel_p 1 4044 #ifdef USE_M32R_OLD_RELOC 4045 #define elf_backend_default_use_rela_p 0 4046 #define elf_backend_may_use_rela_p 0 4047 #else 4048 #define elf_backend_default_use_rela_p 1 4049 #define elf_backend_may_use_rela_p 1 4050 #endif 4051 4052 #define elf_backend_object_p m32r_elf_object_p 4053 #define elf_backend_final_write_processing m32r_elf_final_write_processing 4054 #define bfd_elf32_bfd_merge_private_bfd_data m32r_elf_merge_private_bfd_data 4055 #define bfd_elf32_bfd_set_private_flags m32r_elf_set_private_flags 4056 #define bfd_elf32_bfd_print_private_bfd_data m32r_elf_print_private_bfd_data 4057 #define elf_backend_special_sections m32r_elf_special_sections 4058 4059 #include "elf32-target.h" 4060 4061 #undef ELF_MAXPAGESIZE 4062 #define ELF_MAXPAGESIZE 0x1000 4063 4064 #undef TARGET_BIG_SYM 4065 #define TARGET_BIG_SYM bfd_elf32_m32rlin_vec 4066 #undef TARGET_BIG_NAME 4067 #define TARGET_BIG_NAME "elf32-m32r-linux" 4068 #undef TARGET_LITTLE_SYM 4069 #define TARGET_LITTLE_SYM bfd_elf32_m32rlelin_vec 4070 #undef TARGET_LITTLE_NAME 4071 #define TARGET_LITTLE_NAME "elf32-m32rle-linux" 4072 #undef elf32_bed 4073 #define elf32_bed elf32_m32r_lin_bed 4074 4075 #include "elf32-target.h" 4076 4077