1 /* M32R-specific support for 32-bit ELF. 2 Copyright 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 3 2006, 2007 Free Software Foundation, Inc. 4 5 This file is part of BFD, the Binary File Descriptor library. 6 7 This program is free software; you can redistribute it and/or modify 8 it under the terms of the GNU General Public License as published by 9 the Free Software Foundation; either version 3 of the License, or 10 (at your option) any later version. 11 12 This program is distributed in the hope that it will be useful, 13 but WITHOUT ANY WARRANTY; without even the implied warranty of 14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15 GNU General Public License for more details. 16 17 You should have received a copy of the GNU General Public License 18 along with this program; if not, write to the Free Software 19 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, 20 MA 02110-1301, USA. */ 21 22 #include "sysdep.h" 23 #include "bfd.h" 24 #include "libbfd.h" 25 #include "elf-bfd.h" 26 #include "elf/m32r.h" 27 28 #define NOP_INSN 0x7000 29 #define MAKE_PARALLEL(insn) ((insn) | 0x8000) 30 31 /* Use REL instead of RELA to save space. 32 This only saves space in libraries and object files, but perhaps 33 relocs will be put in ROM? All in all though, REL relocs are a pain 34 to work with. */ 35 /* #define USE_REL 1 36 37 #ifndef USE_REL 38 #define USE_REL 0 39 #endif */ 40 /* Use RELA. But use REL to link old objects for backwords compatibility. */ 41 42 /* Functions for the M32R ELF linker. */ 43 44 /* The name of the dynamic interpreter. This is put in the .interp 45 section. */ 46 47 #define ELF_DYNAMIC_INTERPRETER "/usr/lib/libc.so.1" 48 49 /* The nop opcode we use. */ 50 51 #define M32R_NOP 0x7000f000 52 53 #define PLT_EMPTY 0x10101010 /* RIE -> RIE */ 54 55 /* The size in bytes of an entry in the procedure linkage table. */ 56 57 #define PLT_ENTRY_SIZE 20 58 #define PLT_HEADER_SIZE 20 59 60 /* The first one entries in a procedure linkage table are reserved, 61 and the initial contents are unimportant (we zero them out). 62 Subsequent entries look like this. */ 63 64 #define PLT0_ENTRY_WORD0 0xd6c00000 /* seth r6, #high(.got+4) */ 65 #define PLT0_ENTRY_WORD1 0x86e60000 /* or3 r6, r6, #low(.got)+4) */ 66 #define PLT0_ENTRY_WORD2 0x24e626c6 /* ld r4, @r6+ -> ld r6, @r6 */ 67 #define PLT0_ENTRY_WORD3 0x1fc6f000 /* jmp r6 || pnop */ 68 #define PLT0_ENTRY_WORD4 PLT_EMPTY /* RIE -> RIE */ 69 70 #define PLT0_PIC_ENTRY_WORD0 0xa4cc0004 /* ld r4, @(4,r12) */ 71 #define PLT0_PIC_ENTRY_WORD1 0xa6cc0008 /* ld r6, @(8,r12) */ 72 #define PLT0_PIC_ENTRY_WORD2 0x1fc6f000 /* jmp r6 || nop */ 73 #define PLT0_PIC_ENTRY_WORD3 PLT_EMPTY /* RIE -> RIE */ 74 #define PLT0_PIC_ENTRY_WORD4 PLT_EMPTY /* RIE -> RIE */ 75 76 #define PLT_ENTRY_WORD0 0xe6000000 /* ld24 r6, .name_in_GOT */ 77 #define PLT_ENTRY_WORD1 0x06acf000 /* add r6, r12 || nop */ 78 #define PLT_ENTRY_WORD0b 0xd6c00000 /* seth r6, #high(.name_in_GOT) */ 79 #define PLT_ENTRY_WORD1b 0x86e60000 /* or3 r6, r6, #low(.name_in_GOT) */ 80 #define PLT_ENTRY_WORD2 0x26c61fc6 /* ld r6, @r6 -> jmp r6 */ 81 #define PLT_ENTRY_WORD3 0xe5000000 /* ld24 r5, $offset */ 82 #define PLT_ENTRY_WORD4 0xff000000 /* bra .plt0. */ 83 84 85 /* Utility to actually perform an R_M32R_10_PCREL reloc. */ 86 87 static bfd_reloc_status_type 88 m32r_elf_do_10_pcrel_reloc (bfd *abfd, 89 reloc_howto_type *howto, 90 asection *input_section, 91 bfd_byte *data, 92 bfd_vma offset, 93 asection *symbol_section ATTRIBUTE_UNUSED, 94 bfd_vma symbol_value, 95 bfd_vma addend) 96 { 97 bfd_signed_vma relocation; 98 unsigned long x; 99 bfd_reloc_status_type status; 100 101 /* Sanity check the address (offset in section). */ 102 if (offset > bfd_get_section_limit (abfd, input_section)) 103 return bfd_reloc_outofrange; 104 105 relocation = symbol_value + addend; 106 /* Make it pc relative. */ 107 relocation -= (input_section->output_section->vma 108 + input_section->output_offset); 109 /* These jumps mask off the lower two bits of the current address 110 before doing pcrel calculations. */ 111 relocation -= (offset & -(bfd_vma) 4); 112 113 if (relocation < -0x200 || relocation > 0x1ff) 114 status = bfd_reloc_overflow; 115 else 116 status = bfd_reloc_ok; 117 118 x = bfd_get_16 (abfd, data + offset); 119 relocation >>= howto->rightshift; 120 relocation <<= howto->bitpos; 121 x = (x & ~howto->dst_mask) | (((x & howto->src_mask) + relocation) & howto->dst_mask); 122 bfd_put_16 (abfd, (bfd_vma) x, data + offset); 123 124 return status; 125 } 126 127 /* Handle the R_M32R_10_PCREL reloc. */ 128 129 static bfd_reloc_status_type 130 m32r_elf_10_pcrel_reloc (bfd * abfd, 131 arelent * reloc_entry, 132 asymbol * symbol, 133 void * data, 134 asection * input_section, 135 bfd * output_bfd, 136 char ** error_message ATTRIBUTE_UNUSED) 137 { 138 /* This part is from bfd_elf_generic_reloc. */ 139 if (output_bfd != NULL 140 && (symbol->flags & BSF_SECTION_SYM) == 0 141 && (! reloc_entry->howto->partial_inplace 142 || reloc_entry->addend == 0)) 143 { 144 reloc_entry->address += input_section->output_offset; 145 return bfd_reloc_ok; 146 } 147 148 if (output_bfd != NULL) 149 /* FIXME: See bfd_perform_relocation. Is this right? */ 150 return bfd_reloc_continue; 151 152 return m32r_elf_do_10_pcrel_reloc (abfd, reloc_entry->howto, 153 input_section, 154 data, reloc_entry->address, 155 symbol->section, 156 (symbol->value 157 + symbol->section->output_section->vma 158 + symbol->section->output_offset), 159 reloc_entry->addend); 160 } 161 162 /* Do generic partial_inplace relocation. 163 This is a local replacement for bfd_elf_generic_reloc. */ 164 165 static bfd_reloc_status_type 166 m32r_elf_generic_reloc (bfd *input_bfd, 167 arelent *reloc_entry, 168 asymbol *symbol, 169 void * data, 170 asection *input_section, 171 bfd *output_bfd, 172 char **error_message ATTRIBUTE_UNUSED) 173 { 174 bfd_reloc_status_type ret; 175 bfd_vma relocation; 176 bfd_byte *inplace_address; 177 178 /* This part is from bfd_elf_generic_reloc. 179 If we're relocating, and this an external symbol, we don't want 180 to change anything. */ 181 if (output_bfd != NULL 182 && (symbol->flags & BSF_SECTION_SYM) == 0 183 && reloc_entry->addend == 0) 184 { 185 reloc_entry->address += input_section->output_offset; 186 return bfd_reloc_ok; 187 } 188 189 /* Now do the reloc in the usual way. 190 ??? It would be nice to call bfd_elf_generic_reloc here, 191 but we have partial_inplace set. bfd_elf_generic_reloc will 192 pass the handling back to bfd_install_relocation which will install 193 a section relative addend which is wrong. */ 194 195 /* Sanity check the address (offset in section). */ 196 if (reloc_entry->address > bfd_get_section_limit (input_bfd, input_section)) 197 return bfd_reloc_outofrange; 198 199 ret = bfd_reloc_ok; 200 if (bfd_is_und_section (symbol->section) 201 && output_bfd == NULL) 202 ret = bfd_reloc_undefined; 203 204 if (bfd_is_com_section (symbol->section) 205 || output_bfd != NULL) 206 relocation = 0; 207 else 208 relocation = symbol->value; 209 210 /* Only do this for a final link. */ 211 if (output_bfd == NULL) 212 { 213 relocation += symbol->section->output_section->vma; 214 relocation += symbol->section->output_offset; 215 } 216 217 relocation += reloc_entry->addend; 218 inplace_address = (bfd_byte *) data + reloc_entry->address; 219 220 #define DOIT(x) \ 221 x = ( (x & ~reloc_entry->howto->dst_mask) | \ 222 (((x & reloc_entry->howto->src_mask) + relocation) & \ 223 reloc_entry->howto->dst_mask)) 224 225 switch (reloc_entry->howto->size) 226 { 227 case 1: 228 { 229 short x = bfd_get_16 (input_bfd, inplace_address); 230 DOIT (x); 231 bfd_put_16 (input_bfd, (bfd_vma) x, inplace_address); 232 } 233 break; 234 case 2: 235 { 236 unsigned long x = bfd_get_32 (input_bfd, inplace_address); 237 DOIT (x); 238 bfd_put_32 (input_bfd, (bfd_vma)x , inplace_address); 239 } 240 break; 241 default: 242 BFD_ASSERT (0); 243 } 244 245 if (output_bfd != NULL) 246 reloc_entry->address += input_section->output_offset; 247 248 return ret; 249 } 250 251 /* Handle the R_M32R_SDA16 reloc. 252 This reloc is used to compute the address of objects in the small data area 253 and to perform loads and stores from that area. 254 The lower 16 bits are sign extended and added to the register specified 255 in the instruction, which is assumed to point to _SDA_BASE_. */ 256 257 static bfd_reloc_status_type 258 m32r_elf_sda16_reloc (bfd *abfd ATTRIBUTE_UNUSED, 259 arelent *reloc_entry, 260 asymbol *symbol, 261 void * data ATTRIBUTE_UNUSED, 262 asection *input_section, 263 bfd *output_bfd, 264 char **error_message ATTRIBUTE_UNUSED) 265 { 266 /* This part is from bfd_elf_generic_reloc. */ 267 if (output_bfd != NULL 268 && (symbol->flags & BSF_SECTION_SYM) == 0 269 && (! reloc_entry->howto->partial_inplace 270 || reloc_entry->addend == 0)) 271 { 272 reloc_entry->address += input_section->output_offset; 273 return bfd_reloc_ok; 274 } 275 276 if (output_bfd != NULL) 277 /* FIXME: See bfd_perform_relocation. Is this right? */ 278 return bfd_reloc_continue; 279 280 /* FIXME: not sure what to do here yet. But then again, the linker 281 may never call us. */ 282 abort (); 283 } 284 285 286 /* Handle the R_M32R_HI16_[SU]LO relocs. 287 HI16_SLO is for the add3 and load/store with displacement instructions. 288 HI16_ULO is for the or3 instruction. 289 For R_M32R_HI16_SLO, the lower 16 bits are sign extended when added to 290 the high 16 bytes so if the lower 16 bits are negative (bit 15 == 1) then 291 we must add one to the high 16 bytes (which will get subtracted off when 292 the low 16 bits are added). 293 These relocs have to be done in combination with an R_M32R_LO16 reloc 294 because there is a carry from the LO16 to the HI16. Here we just save 295 the information we need; we do the actual relocation when we see the LO16. 296 This code is copied from the elf32-mips.c. We also support an arbitrary 297 number of HI16 relocs to be associated with a single LO16 reloc. The 298 assembler sorts the relocs to ensure each HI16 immediately precedes its 299 LO16. However if there are multiple copies, the assembler may not find 300 the real LO16 so it picks the first one it finds. */ 301 302 struct m32r_hi16 303 { 304 struct m32r_hi16 *next; 305 bfd_byte *addr; 306 bfd_vma addend; 307 }; 308 309 /* FIXME: This should not be a static variable. */ 310 311 static struct m32r_hi16 *m32r_hi16_list; 312 313 static bfd_reloc_status_type 314 m32r_elf_hi16_reloc (bfd *abfd ATTRIBUTE_UNUSED, 315 arelent *reloc_entry, 316 asymbol *symbol, 317 void * data, 318 asection *input_section, 319 bfd *output_bfd, 320 char **error_message ATTRIBUTE_UNUSED) 321 { 322 bfd_reloc_status_type ret; 323 bfd_vma relocation; 324 struct m32r_hi16 *n; 325 326 /* This part is from bfd_elf_generic_reloc. 327 If we're relocating, and this an external symbol, we don't want 328 to change anything. */ 329 if (output_bfd != NULL 330 && (symbol->flags & BSF_SECTION_SYM) == 0 331 && reloc_entry->addend == 0) 332 { 333 reloc_entry->address += input_section->output_offset; 334 return bfd_reloc_ok; 335 } 336 337 /* Sanity check the address (offset in section). */ 338 if (reloc_entry->address > bfd_get_section_limit (abfd, input_section)) 339 return bfd_reloc_outofrange; 340 341 ret = bfd_reloc_ok; 342 if (bfd_is_und_section (symbol->section) 343 && output_bfd == NULL) 344 ret = bfd_reloc_undefined; 345 346 if (bfd_is_com_section (symbol->section)) 347 relocation = 0; 348 else 349 relocation = symbol->value; 350 351 relocation += symbol->section->output_section->vma; 352 relocation += symbol->section->output_offset; 353 relocation += reloc_entry->addend; 354 355 /* Save the information, and let LO16 do the actual relocation. */ 356 n = bfd_malloc ((bfd_size_type) sizeof *n); 357 if (n == NULL) 358 return bfd_reloc_outofrange; 359 n->addr = (bfd_byte *) data + reloc_entry->address; 360 n->addend = relocation; 361 n->next = m32r_hi16_list; 362 m32r_hi16_list = n; 363 364 if (output_bfd != NULL) 365 reloc_entry->address += input_section->output_offset; 366 367 return ret; 368 } 369 370 /* Handle an M32R ELF HI16 reloc. */ 371 372 static void 373 m32r_elf_relocate_hi16 (bfd *input_bfd, 374 int type, 375 Elf_Internal_Rela *relhi, 376 Elf_Internal_Rela *rello, 377 bfd_byte *contents, 378 bfd_vma addend) 379 { 380 unsigned long insn; 381 bfd_vma addlo; 382 383 insn = bfd_get_32 (input_bfd, contents + relhi->r_offset); 384 385 addlo = bfd_get_32 (input_bfd, contents + rello->r_offset); 386 if (type == R_M32R_HI16_SLO) 387 addlo = ((addlo & 0xffff) ^ 0x8000) - 0x8000; 388 else 389 addlo &= 0xffff; 390 391 addend += ((insn & 0xffff) << 16) + addlo; 392 393 /* Reaccount for sign extension of low part. */ 394 if (type == R_M32R_HI16_SLO 395 && (addend & 0x8000) != 0) 396 addend += 0x10000; 397 398 bfd_put_32 (input_bfd, 399 (insn & 0xffff0000) | ((addend >> 16) & 0xffff), 400 contents + relhi->r_offset); 401 } 402 403 /* Do an R_M32R_LO16 relocation. This is a straightforward 16 bit 404 inplace relocation; this function exists in order to do the 405 R_M32R_HI16_[SU]LO relocation described above. */ 406 407 static bfd_reloc_status_type 408 m32r_elf_lo16_reloc (bfd *input_bfd, 409 arelent *reloc_entry, 410 asymbol *symbol, 411 void * data, 412 asection *input_section, 413 bfd *output_bfd, 414 char **error_message) 415 { 416 /* This part is from bfd_elf_generic_reloc. 417 If we're relocating, and this an external symbol, we don't want 418 to change anything. */ 419 if (output_bfd != NULL 420 && (symbol->flags & BSF_SECTION_SYM) == 0 421 && reloc_entry->addend == 0) 422 { 423 reloc_entry->address += input_section->output_offset; 424 return bfd_reloc_ok; 425 } 426 427 if (m32r_hi16_list != NULL) 428 { 429 struct m32r_hi16 *l; 430 431 l = m32r_hi16_list; 432 while (l != NULL) 433 { 434 unsigned long insn; 435 unsigned long val; 436 unsigned long vallo; 437 struct m32r_hi16 *next; 438 439 /* Do the HI16 relocation. Note that we actually don't need 440 to know anything about the LO16 itself, except where to 441 find the low 16 bits of the addend needed by the LO16. */ 442 insn = bfd_get_32 (input_bfd, l->addr); 443 vallo = ((bfd_get_32 (input_bfd, (bfd_byte *) data + reloc_entry->address) 444 & 0xffff) ^ 0x8000) - 0x8000; 445 val = ((insn & 0xffff) << 16) + vallo; 446 val += l->addend; 447 448 /* Reaccount for sign extension of low part. */ 449 if ((val & 0x8000) != 0) 450 val += 0x10000; 451 452 insn = (insn &~ (bfd_vma) 0xffff) | ((val >> 16) & 0xffff); 453 bfd_put_32 (input_bfd, (bfd_vma) insn, l->addr); 454 455 next = l->next; 456 free (l); 457 l = next; 458 } 459 460 m32r_hi16_list = NULL; 461 } 462 463 /* Now do the LO16 reloc in the usual way. 464 ??? It would be nice to call bfd_elf_generic_reloc here, 465 but we have partial_inplace set. bfd_elf_generic_reloc will 466 pass the handling back to bfd_install_relocation which will install 467 a section relative addend which is wrong. */ 468 return m32r_elf_generic_reloc (input_bfd, reloc_entry, symbol, data, 469 input_section, output_bfd, error_message); 470 } 471 472 473 static reloc_howto_type m32r_elf_howto_table[] = 474 { 475 /* This reloc does nothing. */ 476 HOWTO (R_M32R_NONE, /* type */ 477 0, /* rightshift */ 478 2, /* size (0 = byte, 1 = short, 2 = long) */ 479 32, /* bitsize */ 480 FALSE, /* pc_relative */ 481 0, /* bitpos */ 482 complain_overflow_bitfield, /* complain_on_overflow */ 483 bfd_elf_generic_reloc, /* special_function */ 484 "R_M32R_NONE", /* name */ 485 FALSE, /* partial_inplace */ 486 0, /* src_mask */ 487 0, /* dst_mask */ 488 FALSE), /* pcrel_offset */ 489 490 /* A 16 bit absolute relocation. */ 491 HOWTO (R_M32R_16, /* type */ 492 0, /* rightshift */ 493 1, /* size (0 = byte, 1 = short, 2 = long) */ 494 16, /* bitsize */ 495 FALSE, /* pc_relative */ 496 0, /* bitpos */ 497 complain_overflow_bitfield, /* complain_on_overflow */ 498 m32r_elf_generic_reloc,/* special_function */ 499 "R_M32R_16", /* name */ 500 TRUE, /* partial_inplace */ 501 0xffff, /* src_mask */ 502 0xffff, /* dst_mask */ 503 FALSE), /* pcrel_offset */ 504 505 /* A 32 bit absolute relocation. */ 506 HOWTO (R_M32R_32, /* type */ 507 0, /* rightshift */ 508 2, /* size (0 = byte, 1 = short, 2 = long) */ 509 32, /* bitsize */ 510 FALSE, /* pc_relative */ 511 0, /* bitpos */ 512 complain_overflow_bitfield, /* complain_on_overflow */ 513 m32r_elf_generic_reloc,/* special_function */ 514 "R_M32R_32", /* name */ 515 TRUE, /* partial_inplace */ 516 0xffffffff, /* src_mask */ 517 0xffffffff, /* dst_mask */ 518 FALSE), /* pcrel_offset */ 519 520 /* A 24 bit address. */ 521 HOWTO (R_M32R_24, /* type */ 522 0, /* rightshift */ 523 2, /* size (0 = byte, 1 = short, 2 = long) */ 524 24, /* bitsize */ 525 FALSE, /* pc_relative */ 526 0, /* bitpos */ 527 complain_overflow_unsigned, /* complain_on_overflow */ 528 m32r_elf_generic_reloc,/* special_function */ 529 "R_M32R_24", /* name */ 530 TRUE, /* partial_inplace */ 531 0xffffff, /* src_mask */ 532 0xffffff, /* dst_mask */ 533 FALSE), /* pcrel_offset */ 534 535 /* An PC Relative 10-bit relocation, shifted by 2. 536 This reloc is complicated because relocations are relative to pc & -4. 537 i.e. branches in the right insn slot use the address of the left insn 538 slot for pc. */ 539 /* ??? It's not clear whether this should have partial_inplace set or not. 540 Branch relaxing in the assembler can store the addend in the insn, 541 and if bfd_install_relocation gets called the addend may get added 542 again. */ 543 HOWTO (R_M32R_10_PCREL, /* type */ 544 2, /* rightshift */ 545 1, /* size (0 = byte, 1 = short, 2 = long) */ 546 10, /* bitsize */ 547 TRUE, /* pc_relative */ 548 0, /* bitpos */ 549 complain_overflow_signed, /* complain_on_overflow */ 550 m32r_elf_10_pcrel_reloc, /* special_function */ 551 "R_M32R_10_PCREL", /* name */ 552 FALSE, /* partial_inplace */ 553 0xff, /* src_mask */ 554 0xff, /* dst_mask */ 555 TRUE), /* pcrel_offset */ 556 557 /* A relative 18 bit relocation, right shifted by 2. */ 558 HOWTO (R_M32R_18_PCREL, /* type */ 559 2, /* rightshift */ 560 2, /* size (0 = byte, 1 = short, 2 = long) */ 561 16, /* bitsize */ 562 TRUE, /* pc_relative */ 563 0, /* bitpos */ 564 complain_overflow_signed, /* complain_on_overflow */ 565 bfd_elf_generic_reloc, /* special_function */ 566 "R_M32R_18_PCREL", /* name */ 567 FALSE, /* partial_inplace */ 568 0xffff, /* src_mask */ 569 0xffff, /* dst_mask */ 570 TRUE), /* pcrel_offset */ 571 572 /* A relative 26 bit relocation, right shifted by 2. */ 573 /* ??? It's not clear whether this should have partial_inplace set or not. 574 Branch relaxing in the assembler can store the addend in the insn, 575 and if bfd_install_relocation gets called the addend may get added 576 again. */ 577 HOWTO (R_M32R_26_PCREL, /* type */ 578 2, /* rightshift */ 579 2, /* size (0 = byte, 1 = short, 2 = long) */ 580 26, /* bitsize */ 581 TRUE, /* pc_relative */ 582 0, /* bitpos */ 583 complain_overflow_signed, /* complain_on_overflow */ 584 bfd_elf_generic_reloc, /* special_function */ 585 "R_M32R_26_PCREL", /* name */ 586 FALSE, /* partial_inplace */ 587 0xffffff, /* src_mask */ 588 0xffffff, /* dst_mask */ 589 TRUE), /* pcrel_offset */ 590 591 /* High 16 bits of address when lower 16 is or'd in. */ 592 HOWTO (R_M32R_HI16_ULO, /* type */ 593 16, /* rightshift */ 594 2, /* size (0 = byte, 1 = short, 2 = long) */ 595 16, /* bitsize */ 596 FALSE, /* pc_relative */ 597 0, /* bitpos */ 598 complain_overflow_dont, /* complain_on_overflow */ 599 m32r_elf_hi16_reloc, /* special_function */ 600 "R_M32R_HI16_ULO", /* name */ 601 TRUE, /* partial_inplace */ 602 0x0000ffff, /* src_mask */ 603 0x0000ffff, /* dst_mask */ 604 FALSE), /* pcrel_offset */ 605 606 /* High 16 bits of address when lower 16 is added in. */ 607 HOWTO (R_M32R_HI16_SLO, /* type */ 608 16, /* rightshift */ 609 2, /* size (0 = byte, 1 = short, 2 = long) */ 610 16, /* bitsize */ 611 FALSE, /* pc_relative */ 612 0, /* bitpos */ 613 complain_overflow_dont, /* complain_on_overflow */ 614 m32r_elf_hi16_reloc, /* special_function */ 615 "R_M32R_HI16_SLO", /* name */ 616 TRUE, /* partial_inplace */ 617 0x0000ffff, /* src_mask */ 618 0x0000ffff, /* dst_mask */ 619 FALSE), /* pcrel_offset */ 620 621 /* Lower 16 bits of address. */ 622 HOWTO (R_M32R_LO16, /* type */ 623 0, /* rightshift */ 624 2, /* size (0 = byte, 1 = short, 2 = long) */ 625 16, /* bitsize */ 626 FALSE, /* pc_relative */ 627 0, /* bitpos */ 628 complain_overflow_dont, /* complain_on_overflow */ 629 m32r_elf_lo16_reloc, /* special_function */ 630 "R_M32R_LO16", /* name */ 631 TRUE, /* partial_inplace */ 632 0x0000ffff, /* src_mask */ 633 0x0000ffff, /* dst_mask */ 634 FALSE), /* pcrel_offset */ 635 636 /* Small data area 16 bits offset. */ 637 HOWTO (R_M32R_SDA16, /* type */ 638 0, /* rightshift */ 639 2, /* size (0 = byte, 1 = short, 2 = long) */ 640 16, /* bitsize */ 641 FALSE, /* pc_relative */ 642 0, /* bitpos */ 643 complain_overflow_signed, /* complain_on_overflow */ 644 m32r_elf_sda16_reloc, /* special_function */ 645 "R_M32R_SDA16", /* name */ 646 TRUE, /* partial_inplace */ /* FIXME: correct? */ 647 0x0000ffff, /* src_mask */ 648 0x0000ffff, /* dst_mask */ 649 FALSE), /* pcrel_offset */ 650 651 /* GNU extension to record C++ vtable hierarchy. */ 652 HOWTO (R_M32R_GNU_VTINHERIT, /* type */ 653 0, /* rightshift */ 654 2, /* size (0 = byte, 1 = short, 2 = long) */ 655 0, /* bitsize */ 656 FALSE, /* pc_relative */ 657 0, /* bitpos */ 658 complain_overflow_dont, /* complain_on_overflow */ 659 NULL, /* special_function */ 660 "R_M32R_GNU_VTINHERIT", /* name */ 661 FALSE, /* partial_inplace */ 662 0, /* src_mask */ 663 0, /* dst_mask */ 664 FALSE), /* pcrel_offset */ 665 666 /* GNU extension to record C++ vtable member usage. */ 667 HOWTO (R_M32R_GNU_VTENTRY, /* type */ 668 0, /* rightshift */ 669 2, /* size (0 = byte, 1 = short, 2 = long) */ 670 0, /* bitsize */ 671 FALSE, /* pc_relative */ 672 0, /* bitpos */ 673 complain_overflow_dont, /* complain_on_overflow */ 674 _bfd_elf_rel_vtable_reloc_fn, /* special_function */ 675 "R_M32R_GNU_VTENTRY", /* name */ 676 FALSE, /* partial_inplace */ 677 0, /* src_mask */ 678 0, /* dst_mask */ 679 FALSE), /* pcrel_offset */ 680 681 EMPTY_HOWTO (13), 682 EMPTY_HOWTO (14), 683 EMPTY_HOWTO (15), 684 EMPTY_HOWTO (16), 685 EMPTY_HOWTO (17), 686 EMPTY_HOWTO (18), 687 EMPTY_HOWTO (19), 688 EMPTY_HOWTO (20), 689 EMPTY_HOWTO (21), 690 EMPTY_HOWTO (22), 691 EMPTY_HOWTO (23), 692 EMPTY_HOWTO (24), 693 EMPTY_HOWTO (25), 694 EMPTY_HOWTO (26), 695 EMPTY_HOWTO (27), 696 EMPTY_HOWTO (28), 697 EMPTY_HOWTO (29), 698 EMPTY_HOWTO (30), 699 EMPTY_HOWTO (31), 700 EMPTY_HOWTO (32), 701 702 /* A 16 bit absolute relocation. */ 703 HOWTO (R_M32R_16_RELA, /* type */ 704 0, /* rightshift */ 705 1, /* size (0 = byte, 1 = short, 2 = long) */ 706 16, /* bitsize */ 707 FALSE, /* pc_relative */ 708 0, /* bitpos */ 709 complain_overflow_bitfield, /* complain_on_overflow */ 710 bfd_elf_generic_reloc, /* special_function */ 711 "R_M32R_16_RELA", /* name */ 712 FALSE, /* partial_inplace */ 713 0xffff, /* src_mask */ 714 0xffff, /* dst_mask */ 715 FALSE), /* pcrel_offset */ 716 717 /* A 32 bit absolute relocation. */ 718 HOWTO (R_M32R_32_RELA, /* type */ 719 0, /* rightshift */ 720 2, /* size (0 = byte, 1 = short, 2 = long) */ 721 32, /* bitsize */ 722 FALSE, /* pc_relative */ 723 0, /* bitpos */ 724 complain_overflow_bitfield, /* complain_on_overflow */ 725 bfd_elf_generic_reloc,/* special_function */ 726 "R_M32R_32_RELA", /* name */ 727 FALSE, /* partial_inplace */ 728 0xffffffff, /* src_mask */ 729 0xffffffff, /* dst_mask */ 730 FALSE), /* pcrel_offset */ 731 732 /* A 24 bit address. */ 733 HOWTO (R_M32R_24_RELA, /* type */ 734 0, /* rightshift */ 735 2, /* size (0 = byte, 1 = short, 2 = long) */ 736 24, /* bitsize */ 737 FALSE, /* pc_relative */ 738 0, /* bitpos */ 739 complain_overflow_unsigned, /* complain_on_overflow */ 740 bfd_elf_generic_reloc,/* special_function */ 741 "R_M32R_24_RELA", /* name */ 742 FALSE, /* partial_inplace */ 743 0xffffff, /* src_mask */ 744 0xffffff, /* dst_mask */ 745 FALSE), /* pcrel_offset */ 746 747 HOWTO (R_M32R_10_PCREL_RELA, /* type */ 748 2, /* rightshift */ 749 1, /* size (0 = byte, 1 = short, 2 = long) */ 750 10, /* bitsize */ 751 TRUE, /* pc_relative */ 752 0, /* bitpos */ 753 complain_overflow_signed, /* complain_on_overflow */ 754 m32r_elf_10_pcrel_reloc, /* special_function */ 755 "R_M32R_10_PCREL_RELA",/* name */ 756 FALSE, /* partial_inplace */ 757 0xff, /* src_mask */ 758 0xff, /* dst_mask */ 759 TRUE), /* pcrel_offset */ 760 761 /* A relative 18 bit relocation, right shifted by 2. */ 762 HOWTO (R_M32R_18_PCREL_RELA, /* type */ 763 2, /* rightshift */ 764 2, /* size (0 = byte, 1 = short, 2 = long) */ 765 16, /* bitsize */ 766 TRUE, /* pc_relative */ 767 0, /* bitpos */ 768 complain_overflow_signed, /* complain_on_overflow */ 769 bfd_elf_generic_reloc, /* special_function */ 770 "R_M32R_18_PCREL_RELA",/* name */ 771 FALSE, /* partial_inplace */ 772 0xffff, /* src_mask */ 773 0xffff, /* dst_mask */ 774 TRUE), /* pcrel_offset */ 775 776 /* A relative 26 bit relocation, right shifted by 2. */ 777 HOWTO (R_M32R_26_PCREL_RELA, /* type */ 778 2, /* rightshift */ 779 2, /* size (0 = byte, 1 = short, 2 = long) */ 780 26, /* bitsize */ 781 TRUE, /* pc_relative */ 782 0, /* bitpos */ 783 complain_overflow_signed, /* complain_on_overflow */ 784 bfd_elf_generic_reloc, /* special_function */ 785 "R_M32R_26_PCREL_RELA",/* name */ 786 FALSE, /* partial_inplace */ 787 0xffffff, /* src_mask */ 788 0xffffff, /* dst_mask */ 789 TRUE), /* pcrel_offset */ 790 791 /* High 16 bits of address when lower 16 is or'd in. */ 792 HOWTO (R_M32R_HI16_ULO_RELA, /* type */ 793 16, /* rightshift */ 794 2, /* size (0 = byte, 1 = short, 2 = long) */ 795 16, /* bitsize */ 796 FALSE, /* pc_relative */ 797 0, /* bitpos */ 798 complain_overflow_dont, /* complain_on_overflow */ 799 bfd_elf_generic_reloc, /* special_function */ 800 "R_M32R_HI16_ULO_RELA",/* name */ 801 FALSE, /* partial_inplace */ 802 0x0000ffff, /* src_mask */ 803 0x0000ffff, /* dst_mask */ 804 FALSE), /* pcrel_offset */ 805 806 /* High 16 bits of address when lower 16 is added in. */ 807 HOWTO (R_M32R_HI16_SLO_RELA, /* type */ 808 16, /* rightshift */ 809 2, /* size (0 = byte, 1 = short, 2 = long) */ 810 16, /* bitsize */ 811 FALSE, /* pc_relative */ 812 0, /* bitpos */ 813 complain_overflow_dont, /* complain_on_overflow */ 814 bfd_elf_generic_reloc, /* special_function */ 815 "R_M32R_HI16_SLO_RELA",/* name */ 816 FALSE, /* partial_inplace */ 817 0x0000ffff, /* src_mask */ 818 0x0000ffff, /* dst_mask */ 819 FALSE), /* pcrel_offset */ 820 821 /* Lower 16 bits of address. */ 822 HOWTO (R_M32R_LO16_RELA, /* type */ 823 0, /* rightshift */ 824 2, /* size (0 = byte, 1 = short, 2 = long) */ 825 16, /* bitsize */ 826 FALSE, /* pc_relative */ 827 0, /* bitpos */ 828 complain_overflow_dont, /* complain_on_overflow */ 829 bfd_elf_generic_reloc, /* special_function */ 830 "R_M32R_LO16_RELA", /* name */ 831 FALSE, /* partial_inplace */ 832 0x0000ffff, /* src_mask */ 833 0x0000ffff, /* dst_mask */ 834 FALSE), /* pcrel_offset */ 835 836 /* Small data area 16 bits offset. */ 837 HOWTO (R_M32R_SDA16_RELA, /* type */ 838 0, /* rightshift */ 839 2, /* size (0 = byte, 1 = short, 2 = long) */ 840 16, /* bitsize */ 841 FALSE, /* pc_relative */ 842 0, /* bitpos */ 843 complain_overflow_signed, /* complain_on_overflow */ 844 bfd_elf_generic_reloc, /* special_function */ 845 "R_M32R_SDA16_RELA", /* name */ 846 TRUE, /* partial_inplace */ /* FIXME: correct? */ 847 0x0000ffff, /* src_mask */ 848 0x0000ffff, /* dst_mask */ 849 FALSE), /* pcrel_offset */ 850 851 /* GNU extension to record C++ vtable hierarchy. */ 852 HOWTO (R_M32R_RELA_GNU_VTINHERIT, /* type */ 853 0, /* rightshift */ 854 2, /* size (0 = byte, 1 = short, 2 = long) */ 855 0, /* bitsize */ 856 FALSE, /* pc_relative */ 857 0, /* bitpos */ 858 complain_overflow_dont, /* complain_on_overflow */ 859 NULL, /* special_function */ 860 "R_M32R_RELA_GNU_VTINHERIT", /* name */ 861 FALSE, /* partial_inplace */ 862 0, /* src_mask */ 863 0, /* dst_mask */ 864 FALSE), /* pcrel_offset */ 865 866 /* GNU extension to record C++ vtable member usage. */ 867 HOWTO (R_M32R_RELA_GNU_VTENTRY, /* type */ 868 0, /* rightshift */ 869 2, /* size (0 = byte, 1 = short, 2 = long) */ 870 0, /* bitsize */ 871 FALSE, /* pc_relative */ 872 0, /* bitpos */ 873 complain_overflow_dont, /* complain_on_overflow */ 874 _bfd_elf_rel_vtable_reloc_fn, /* special_function */ 875 "R_M32R_RELA_GNU_VTENTRY", /* name */ 876 FALSE, /* partial_inplace */ 877 0, /* src_mask */ 878 0, /* dst_mask */ 879 FALSE), /* pcrel_offset */ 880 881 /* A 32 bit PC relative relocation. */ 882 HOWTO (R_M32R_REL32, /* type */ 883 0, /* rightshift */ 884 2, /* size (0 = byte, 1 = short, 2 = long) */ 885 32, /* bitsize */ 886 TRUE, /* pc_relative */ 887 0, /* bitpos */ 888 complain_overflow_bitfield, /* complain_on_overflow */ 889 bfd_elf_generic_reloc,/* special_function */ 890 "R_M32R_REL32", /* name */ 891 FALSE, /* partial_inplace */ 892 0xffffffff, /* src_mask */ 893 0xffffffff, /* dst_mask */ 894 TRUE), /* pcrel_offset */ 895 896 EMPTY_HOWTO (46), 897 EMPTY_HOWTO (47), 898 899 /* Like R_M32R_24, but referring to the GOT table entry for 900 the symbol. */ 901 HOWTO (R_M32R_GOT24, /* type */ 902 0, /* rightshift */ 903 2, /* size (0 = byte, 1 = short, 2 = long) */ 904 24, /* bitsize */ 905 FALSE, /* pc_relative */ 906 0, /* bitpos */ 907 complain_overflow_unsigned, /* complain_on_overflow */ 908 bfd_elf_generic_reloc, /* special_function */ 909 "R_M32R_GOT24", /* name */ 910 FALSE, /* partial_inplace */ 911 0xffffff, /* src_mask */ 912 0xffffff, /* dst_mask */ 913 FALSE), /* pcrel_offset */ 914 915 /* Like R_M32R_PCREL, but referring to the procedure linkage table 916 entry for the symbol. */ 917 HOWTO (R_M32R_26_PLTREL, /* type */ 918 2, /* rightshift */ 919 2, /* size (0 = byte, 1 = short, 2 = long) */ 920 24, /* bitsize */ 921 TRUE, /* pc_relative */ 922 0, /* bitpos */ 923 complain_overflow_signed, /* complain_on_overflow */ 924 bfd_elf_generic_reloc, /* special_function */ 925 "R_M32R_26_PLTREL", /* name */ 926 FALSE, /* partial_inplace */ 927 0xffffff, /* src_mask */ 928 0xffffff, /* dst_mask */ 929 TRUE), /* pcrel_offset */ 930 931 /* This is used only by the dynamic linker. The symbol should exist 932 both in the object being run and in some shared library. The 933 dynamic linker copies the data addressed by the symbol from the 934 shared library into the object, because the object being 935 run has to have the data at some particular address. */ 936 HOWTO (R_M32R_COPY, /* type */ 937 0, /* rightshift */ 938 2, /* size (0 = byte, 1 = short, 2 = long) */ 939 32, /* bitsize */ 940 FALSE, /* pc_relative */ 941 0, /* bitpos */ 942 complain_overflow_bitfield, /* complain_on_overflow */ 943 bfd_elf_generic_reloc, /* special_function */ 944 "R_M32R_COPY", /* name */ 945 FALSE, /* partial_inplace */ 946 0xffffffff, /* src_mask */ 947 0xffffffff, /* dst_mask */ 948 FALSE), /* pcrel_offset */ 949 950 /* Like R_M32R_24, but used when setting global offset table 951 entries. */ 952 HOWTO (R_M32R_GLOB_DAT, /* type */ 953 0, /* rightshift */ 954 2, /* size (0 = byte, 1 = short, 2 = long) */ 955 32, /* bitsize */ 956 FALSE, /* pc_relative */ 957 0, /* bitpos */ 958 complain_overflow_bitfield, /* complain_on_overflow */ 959 bfd_elf_generic_reloc, /* special_function */ 960 "R_M32R_GLOB_DAT", /* name */ 961 FALSE, /* partial_inplace */ 962 0xffffffff, /* src_mask */ 963 0xffffffff, /* dst_mask */ 964 FALSE), /* pcrel_offset */ 965 966 /* Marks a procedure linkage table entry for a symbol. */ 967 HOWTO (R_M32R_JMP_SLOT, /* type */ 968 0, /* rightshift */ 969 2, /* size (0 = byte, 1 = short, 2 = long) */ 970 32, /* bitsize */ 971 FALSE, /* pc_relative */ 972 0, /* bitpos */ 973 complain_overflow_bitfield, /* complain_on_overflow */ 974 bfd_elf_generic_reloc, /* special_function */ 975 "R_M32R_JMP_SLOT", /* name */ 976 FALSE, /* partial_inplace */ 977 0xffffffff, /* src_mask */ 978 0xffffffff, /* dst_mask */ 979 FALSE), /* pcrel_offset */ 980 981 /* Used only by the dynamic linker. When the object is run, this 982 longword is set to the load address of the object, plus the 983 addend. */ 984 HOWTO (R_M32R_RELATIVE, /* type */ 985 0, /* rightshift */ 986 2, /* size (0 = byte, 1 = short, 2 = long) */ 987 32, /* bitsize */ 988 FALSE, /* pc_relative */ 989 0, /* bitpos */ 990 complain_overflow_bitfield, /* complain_on_overflow */ 991 bfd_elf_generic_reloc, /* special_function */ 992 "R_M32R_RELATIVE", /* name */ 993 FALSE, /* partial_inplace */ 994 0xffffffff, /* src_mask */ 995 0xffffffff, /* dst_mask */ 996 FALSE), /* pcrel_offset */ 997 998 HOWTO (R_M32R_GOTOFF, /* type */ 999 0, /* rightshift */ 1000 2, /* size (0 = byte, 1 = short, 2 = long) */ 1001 24, /* bitsize */ 1002 FALSE, /* pc_relative */ 1003 0, /* bitpos */ 1004 complain_overflow_bitfield, /* complain_on_overflow */ 1005 bfd_elf_generic_reloc, /* special_function */ 1006 "R_M32R_GOTOFF", /* name */ 1007 FALSE, /* partial_inplace */ 1008 0xffffff, /* src_mask */ 1009 0xffffff, /* dst_mask */ 1010 FALSE), /* pcrel_offset */ 1011 1012 /* An PC Relative 24-bit relocation used when setting PIC offset 1013 table register. */ 1014 HOWTO (R_M32R_GOTPC24, /* type */ 1015 0, /* rightshift */ 1016 2, /* size (0 = byte, 1 = short, 2 = long) */ 1017 24, /* bitsize */ 1018 TRUE, /* pc_relative */ 1019 0, /* bitpos */ 1020 complain_overflow_unsigned, /* complain_on_overflow */ 1021 bfd_elf_generic_reloc, /* special_function */ 1022 "R_M32R_GOTPC24", /* name */ 1023 FALSE, /* partial_inplace */ 1024 0xffffff, /* src_mask */ 1025 0xffffff, /* dst_mask */ 1026 TRUE), /* pcrel_offset */ 1027 1028 /* Like R_M32R_HI16_ULO, but referring to the GOT table entry for 1029 the symbol. */ 1030 HOWTO (R_M32R_GOT16_HI_ULO, /* type */ 1031 16, /* rightshift */ 1032 2, /* size (0 = byte, 1 = short, 2 = long) */ 1033 16, /* bitsize */ 1034 FALSE, /* pc_relative */ 1035 0, /* bitpos */ 1036 complain_overflow_dont, /* complain_on_overflow */ 1037 bfd_elf_generic_reloc, /* special_function */ 1038 "R_M32R_GOT16_HI_ULO", /* name */ 1039 FALSE, /* partial_inplace */ 1040 0x0000ffff, /* src_mask */ 1041 0x0000ffff, /* dst_mask */ 1042 FALSE), /* pcrel_offset */ 1043 1044 /* Like R_M32R_HI16_SLO, but referring to the GOT table entry for 1045 the symbol. */ 1046 HOWTO (R_M32R_GOT16_HI_SLO, /* type */ 1047 16, /* rightshift */ 1048 2, /* size (0 = byte, 1 = short, 2 = long) */ 1049 16, /* bitsize */ 1050 FALSE, /* pc_relative */ 1051 0, /* bitpos */ 1052 complain_overflow_dont, /* complain_on_overflow */ 1053 bfd_elf_generic_reloc, /* special_function */ 1054 "R_M32R_GOT16_HI_SLO", /* name */ 1055 FALSE, /* partial_inplace */ 1056 0x0000ffff, /* src_mask */ 1057 0x0000ffff, /* dst_mask */ 1058 FALSE), /* pcrel_offset */ 1059 1060 /* Like R_M32R_LO16, but referring to the GOT table entry for 1061 the symbol. */ 1062 HOWTO (R_M32R_GOT16_LO, /* type */ 1063 0, /* rightshift */ 1064 2, /* size (0 = byte, 1 = short, 2 = long) */ 1065 16, /* bitsize */ 1066 FALSE, /* pc_relative */ 1067 0, /* bitpos */ 1068 complain_overflow_dont, /* complain_on_overflow */ 1069 bfd_elf_generic_reloc, /* special_function */ 1070 "R_M32R_GOT16_LO", /* name */ 1071 FALSE, /* partial_inplace */ 1072 0x0000ffff, /* src_mask */ 1073 0x0000ffff, /* dst_mask */ 1074 FALSE), /* pcrel_offset */ 1075 1076 /* An PC Relative relocation used when setting PIC offset table register. 1077 Like R_M32R_HI16_ULO, but referring to the GOT table entry for 1078 the symbol. */ 1079 HOWTO (R_M32R_GOTPC_HI_ULO, /* type */ 1080 16, /* rightshift */ 1081 2, /* size (0 = byte, 1 = short, 2 = long) */ 1082 16, /* bitsize */ 1083 FALSE, /* pc_relative */ 1084 0, /* bitpos */ 1085 complain_overflow_dont, /* complain_on_overflow */ 1086 bfd_elf_generic_reloc, /* special_function */ 1087 "R_M32R_GOTPC_HI_ULO", /* name */ 1088 FALSE, /* partial_inplace */ 1089 0x0000ffff, /* src_mask */ 1090 0x0000ffff, /* dst_mask */ 1091 TRUE), /* pcrel_offset */ 1092 1093 /* An PC Relative relocation used when setting PIC offset table register. 1094 Like R_M32R_HI16_SLO, but referring to the GOT table entry for 1095 the symbol. */ 1096 HOWTO (R_M32R_GOTPC_HI_SLO, /* type */ 1097 16, /* rightshift */ 1098 2, /* size (0 = byte, 1 = short, 2 = long) */ 1099 16, /* bitsize */ 1100 FALSE, /* pc_relative */ 1101 0, /* bitpos */ 1102 complain_overflow_dont, /* complain_on_overflow */ 1103 bfd_elf_generic_reloc, /* special_function */ 1104 "R_M32R_GOTPC_HI_SLO", /* name */ 1105 FALSE, /* partial_inplace */ 1106 0x0000ffff, /* src_mask */ 1107 0x0000ffff, /* dst_mask */ 1108 TRUE), /* pcrel_offset */ 1109 1110 /* An PC Relative relocation used when setting PIC offset table register. 1111 Like R_M32R_LO16, but referring to the GOT table entry for 1112 the symbol. */ 1113 HOWTO (R_M32R_GOTPC_LO, /* type */ 1114 0, /* rightshift */ 1115 2, /* size (0 = byte, 1 = short, 2 = long) */ 1116 16, /* bitsize */ 1117 FALSE, /* pc_relative */ 1118 0, /* bitpos */ 1119 complain_overflow_dont, /* complain_on_overflow */ 1120 bfd_elf_generic_reloc, /* special_function */ 1121 "R_M32R_GOTPC_LO", /* name */ 1122 FALSE, /* partial_inplace */ 1123 0x0000ffff, /* src_mask */ 1124 0x0000ffff, /* dst_mask */ 1125 TRUE), /* pcrel_offset */ 1126 1127 HOWTO (R_M32R_GOTOFF_HI_ULO, /* type */ 1128 16, /* rightshift */ 1129 2, /* size (0 = byte, 1 = short, 2 = long) */ 1130 16, /* bitsize */ 1131 FALSE, /* pc_relative */ 1132 0, /* bitpos */ 1133 complain_overflow_dont, /* complain_on_overflow */ 1134 bfd_elf_generic_reloc, /* special_function */ 1135 "R_M32R_GOTOFF_HI_ULO",/* name */ 1136 FALSE, /* partial_inplace */ 1137 0x0000ffff, /* src_mask */ 1138 0x0000ffff, /* dst_mask */ 1139 FALSE), /* pcrel_offset */ 1140 1141 HOWTO (R_M32R_GOTOFF_HI_SLO, /* type */ 1142 16, /* rightshift */ 1143 2, /* size (0 = byte, 1 = short, 2 = long) */ 1144 16, /* bitsize */ 1145 FALSE, /* pc_relative */ 1146 0, /* bitpos */ 1147 complain_overflow_dont, /* complain_on_overflow */ 1148 bfd_elf_generic_reloc, /* special_function */ 1149 "R_M32R_GOTOFF_HI_SLO",/* name */ 1150 FALSE, /* partial_inplace */ 1151 0x0000ffff, /* src_mask */ 1152 0x0000ffff, /* dst_mask */ 1153 FALSE), /* pcrel_offset */ 1154 1155 HOWTO (R_M32R_GOTOFF_LO, /* type */ 1156 0, /* rightshift */ 1157 2, /* size (0 = byte, 1 = short, 2 = long) */ 1158 16, /* bitsize */ 1159 FALSE, /* pc_relative */ 1160 0, /* bitpos */ 1161 complain_overflow_dont, /* complain_on_overflow */ 1162 bfd_elf_generic_reloc, /* special_function */ 1163 "R_M32R_GOTOFF_LO", /* name */ 1164 FALSE, /* partial_inplace */ 1165 0x0000ffff, /* src_mask */ 1166 0x0000ffff, /* dst_mask */ 1167 FALSE), /* pcrel_offset */ 1168 }; 1169 1170 /* Map BFD reloc types to M32R ELF reloc types. */ 1171 1172 struct m32r_reloc_map 1173 { 1174 bfd_reloc_code_real_type bfd_reloc_val; 1175 unsigned char elf_reloc_val; 1176 }; 1177 1178 #ifdef USE_M32R_OLD_RELOC 1179 static const struct m32r_reloc_map m32r_reloc_map_old[] = 1180 { 1181 { BFD_RELOC_NONE, R_M32R_NONE }, 1182 { BFD_RELOC_16, R_M32R_16 }, 1183 { BFD_RELOC_32, R_M32R_32 }, 1184 { BFD_RELOC_M32R_24, R_M32R_24 }, 1185 { BFD_RELOC_M32R_10_PCREL, R_M32R_10_PCREL }, 1186 { BFD_RELOC_M32R_18_PCREL, R_M32R_18_PCREL }, 1187 { BFD_RELOC_M32R_26_PCREL, R_M32R_26_PCREL }, 1188 { BFD_RELOC_M32R_HI16_ULO, R_M32R_HI16_ULO }, 1189 { BFD_RELOC_M32R_HI16_SLO, R_M32R_HI16_SLO }, 1190 { BFD_RELOC_M32R_LO16, R_M32R_LO16 }, 1191 { BFD_RELOC_M32R_SDA16, R_M32R_SDA16 }, 1192 { BFD_RELOC_VTABLE_INHERIT, R_M32R_GNU_VTINHERIT }, 1193 { BFD_RELOC_VTABLE_ENTRY, R_M32R_GNU_VTENTRY }, 1194 }; 1195 #else 1196 static const struct m32r_reloc_map m32r_reloc_map[] = 1197 { 1198 { BFD_RELOC_NONE, R_M32R_NONE }, 1199 { BFD_RELOC_16, R_M32R_16_RELA }, 1200 { BFD_RELOC_32, R_M32R_32_RELA }, 1201 { BFD_RELOC_M32R_24, R_M32R_24_RELA }, 1202 { BFD_RELOC_M32R_10_PCREL, R_M32R_10_PCREL_RELA }, 1203 { BFD_RELOC_M32R_18_PCREL, R_M32R_18_PCREL_RELA }, 1204 { BFD_RELOC_M32R_26_PCREL, R_M32R_26_PCREL_RELA }, 1205 { BFD_RELOC_M32R_HI16_ULO, R_M32R_HI16_ULO_RELA }, 1206 { BFD_RELOC_M32R_HI16_SLO, R_M32R_HI16_SLO_RELA }, 1207 { BFD_RELOC_M32R_LO16, R_M32R_LO16_RELA }, 1208 { BFD_RELOC_M32R_SDA16, R_M32R_SDA16_RELA }, 1209 { BFD_RELOC_VTABLE_INHERIT, R_M32R_RELA_GNU_VTINHERIT }, 1210 { BFD_RELOC_VTABLE_ENTRY, R_M32R_RELA_GNU_VTENTRY }, 1211 { BFD_RELOC_32_PCREL, R_M32R_REL32 }, 1212 1213 { BFD_RELOC_M32R_GOT24, R_M32R_GOT24 }, 1214 { BFD_RELOC_M32R_26_PLTREL, R_M32R_26_PLTREL }, 1215 { BFD_RELOC_M32R_COPY, R_M32R_COPY }, 1216 { BFD_RELOC_M32R_GLOB_DAT, R_M32R_GLOB_DAT }, 1217 { BFD_RELOC_M32R_JMP_SLOT, R_M32R_JMP_SLOT }, 1218 { BFD_RELOC_M32R_RELATIVE, R_M32R_RELATIVE }, 1219 { BFD_RELOC_M32R_GOTOFF, R_M32R_GOTOFF }, 1220 { BFD_RELOC_M32R_GOTPC24, R_M32R_GOTPC24 }, 1221 { BFD_RELOC_M32R_GOT16_HI_ULO, R_M32R_GOT16_HI_ULO }, 1222 { BFD_RELOC_M32R_GOT16_HI_SLO, R_M32R_GOT16_HI_SLO }, 1223 { BFD_RELOC_M32R_GOT16_LO, R_M32R_GOT16_LO }, 1224 { BFD_RELOC_M32R_GOTPC_HI_ULO, R_M32R_GOTPC_HI_ULO }, 1225 { BFD_RELOC_M32R_GOTPC_HI_SLO, R_M32R_GOTPC_HI_SLO }, 1226 { BFD_RELOC_M32R_GOTPC_LO, R_M32R_GOTPC_LO }, 1227 { BFD_RELOC_M32R_GOTOFF_HI_ULO, R_M32R_GOTOFF_HI_ULO }, 1228 { BFD_RELOC_M32R_GOTOFF_HI_SLO, R_M32R_GOTOFF_HI_SLO }, 1229 { BFD_RELOC_M32R_GOTOFF_LO, R_M32R_GOTOFF_LO }, 1230 }; 1231 #endif 1232 1233 static reloc_howto_type * 1234 bfd_elf32_bfd_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED, 1235 bfd_reloc_code_real_type code) 1236 { 1237 unsigned int i; 1238 1239 #ifdef USE_M32R_OLD_RELOC 1240 for (i = 0; 1241 i < sizeof (m32r_reloc_map_old) / sizeof (struct m32r_reloc_map); 1242 i++) 1243 if (m32r_reloc_map_old[i].bfd_reloc_val == code) 1244 return &m32r_elf_howto_table[m32r_reloc_map_old[i].elf_reloc_val]; 1245 1246 #else /* ! USE_M32R_OLD_RELOC */ 1247 1248 for (i = 0; 1249 i < sizeof (m32r_reloc_map) / sizeof (struct m32r_reloc_map); 1250 i++) 1251 if (m32r_reloc_map[i].bfd_reloc_val == code) 1252 return &m32r_elf_howto_table[m32r_reloc_map[i].elf_reloc_val]; 1253 #endif 1254 1255 return NULL; 1256 } 1257 1258 static reloc_howto_type * 1259 bfd_elf32_bfd_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED, 1260 const char *r_name) 1261 { 1262 unsigned int i; 1263 1264 for (i = 0; 1265 i < sizeof (m32r_elf_howto_table) / sizeof (m32r_elf_howto_table[0]); 1266 i++) 1267 if (m32r_elf_howto_table[i].name != NULL 1268 && strcasecmp (m32r_elf_howto_table[i].name, r_name) == 0) 1269 return &m32r_elf_howto_table[i]; 1270 1271 return NULL; 1272 } 1273 1274 /* Set the howto pointer for an M32R ELF reloc. */ 1275 1276 static void 1277 m32r_info_to_howto_rel (bfd *abfd ATTRIBUTE_UNUSED, 1278 arelent *cache_ptr, 1279 Elf_Internal_Rela *dst) 1280 { 1281 unsigned int r_type; 1282 1283 r_type = ELF32_R_TYPE (dst->r_info); 1284 BFD_ASSERT (ELF32_R_TYPE(dst->r_info) <= (unsigned int) R_M32R_GNU_VTENTRY); 1285 cache_ptr->howto = &m32r_elf_howto_table[r_type]; 1286 } 1287 1288 static void 1289 m32r_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED, 1290 arelent *cache_ptr, 1291 Elf_Internal_Rela *dst) 1292 { 1293 BFD_ASSERT ((ELF32_R_TYPE(dst->r_info) == (unsigned int) R_M32R_NONE) 1294 || ((ELF32_R_TYPE(dst->r_info) > (unsigned int) R_M32R_GNU_VTENTRY) 1295 && (ELF32_R_TYPE(dst->r_info) < (unsigned int) R_M32R_max))); 1296 cache_ptr->howto = &m32r_elf_howto_table[ELF32_R_TYPE(dst->r_info)]; 1297 } 1298 1299 1300 /* Given a BFD section, try to locate the corresponding ELF section 1301 index. */ 1302 1303 static bfd_boolean 1304 _bfd_m32r_elf_section_from_bfd_section (bfd *abfd ATTRIBUTE_UNUSED, 1305 asection *sec, 1306 int *retval) 1307 { 1308 if (strcmp (bfd_get_section_name (abfd, sec), ".scommon") == 0) 1309 { 1310 *retval = SHN_M32R_SCOMMON; 1311 return TRUE; 1312 } 1313 return FALSE; 1314 } 1315 1316 /* M32R ELF uses two common sections. One is the usual one, and the other 1317 is for small objects. All the small objects are kept together, and then 1318 referenced via one register, which yields faster assembler code. It is 1319 up to the compiler to emit an instruction to load the register with 1320 _SDA_BASE. This is what we use for the small common section. This 1321 approach is copied from elf32-mips.c. */ 1322 static asection m32r_elf_scom_section; 1323 static asymbol m32r_elf_scom_symbol; 1324 static asymbol *m32r_elf_scom_symbol_ptr; 1325 1326 /* Handle the special M32R section numbers that a symbol may use. */ 1327 1328 static void 1329 _bfd_m32r_elf_symbol_processing (bfd *abfd ATTRIBUTE_UNUSED, asymbol *asym) 1330 { 1331 elf_symbol_type *elfsym = (elf_symbol_type *) asym; 1332 1333 switch (elfsym->internal_elf_sym.st_shndx) 1334 { 1335 case SHN_M32R_SCOMMON: 1336 if (m32r_elf_scom_section.name == NULL) 1337 { 1338 /* Initialize the small common section. */ 1339 m32r_elf_scom_section.name = ".scommon"; 1340 m32r_elf_scom_section.flags = SEC_IS_COMMON; 1341 m32r_elf_scom_section.output_section = &m32r_elf_scom_section; 1342 m32r_elf_scom_section.symbol = &m32r_elf_scom_symbol; 1343 m32r_elf_scom_section.symbol_ptr_ptr = &m32r_elf_scom_symbol_ptr; 1344 m32r_elf_scom_symbol.name = ".scommon"; 1345 m32r_elf_scom_symbol.flags = BSF_SECTION_SYM; 1346 m32r_elf_scom_symbol.section = &m32r_elf_scom_section; 1347 m32r_elf_scom_symbol_ptr = &m32r_elf_scom_symbol; 1348 } 1349 asym->section = &m32r_elf_scom_section; 1350 asym->value = elfsym->internal_elf_sym.st_size; 1351 break; 1352 } 1353 } 1354 1355 /* Hook called by the linker routine which adds symbols from an object 1356 file. We must handle the special M32R section numbers here. 1357 We also keep watching for whether we need to create the sdata special 1358 linker sections. */ 1359 1360 static bfd_boolean 1361 m32r_elf_add_symbol_hook (bfd *abfd, 1362 struct bfd_link_info *info, 1363 Elf_Internal_Sym *sym, 1364 const char **namep, 1365 flagword *flagsp ATTRIBUTE_UNUSED, 1366 asection **secp, 1367 bfd_vma *valp) 1368 { 1369 if (! info->relocatable 1370 && (*namep)[0] == '_' && (*namep)[1] == 'S' 1371 && strcmp (*namep, "_SDA_BASE_") == 0 1372 && is_elf_hash_table (info->hash)) 1373 { 1374 /* This is simpler than using _bfd_elf_create_linker_section 1375 (our needs are simpler than ppc's needs). Also 1376 _bfd_elf_create_linker_section currently has a bug where if a .sdata 1377 section already exists a new one is created that follows it which 1378 screws of _SDA_BASE_ address calcs because output_offset != 0. */ 1379 struct elf_link_hash_entry *h; 1380 struct bfd_link_hash_entry *bh; 1381 asection *s = bfd_get_section_by_name (abfd, ".sdata"); 1382 1383 /* The following code was cobbled from elf32-ppc.c and elflink.c. */ 1384 if (s == NULL) 1385 { 1386 flagword flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS 1387 | SEC_IN_MEMORY | SEC_LINKER_CREATED); 1388 1389 s = bfd_make_section_anyway_with_flags (abfd, ".sdata", 1390 flags); 1391 if (s == NULL) 1392 return FALSE; 1393 bfd_set_section_alignment (abfd, s, 2); 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 to section mapping cache. */ 1530 struct sym_sec_cache sym_sec; 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 1544 #define m32r_elf_hash_table(p) \ 1545 ((struct elf_m32r_link_hash_table *) ((p)->hash)) 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_malloc (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 { 1596 free (ret); 1597 return NULL; 1598 } 1599 1600 ret->sgot = NULL; 1601 ret->sgotplt = NULL; 1602 ret->srelgot = NULL; 1603 ret->splt = NULL; 1604 ret->srelplt = NULL; 1605 ret->sdynbss = NULL; 1606 ret->srelbss = NULL; 1607 ret->sym_sec.abfd = NULL; 1608 1609 return &ret->root.root; 1610 } 1611 1612 /* Create .got, .gotplt, and .rela.got sections in DYNOBJ, and set up 1613 shortcuts to them in our hash table. */ 1614 1615 static bfd_boolean 1616 create_got_section (bfd *dynobj, struct bfd_link_info *info) 1617 { 1618 struct elf_m32r_link_hash_table *htab; 1619 1620 if (! _bfd_elf_create_got_section (dynobj, info)) 1621 return FALSE; 1622 1623 htab = m32r_elf_hash_table (info); 1624 htab->sgot = bfd_get_section_by_name (dynobj, ".got"); 1625 htab->sgotplt = bfd_get_section_by_name (dynobj, ".got.plt"); 1626 if (! htab->sgot || ! htab->sgotplt) 1627 abort (); 1628 1629 htab->srelgot = bfd_make_section_with_flags (dynobj, ".rela.got", 1630 (SEC_ALLOC 1631 | SEC_LOAD 1632 | SEC_HAS_CONTENTS 1633 | SEC_IN_MEMORY 1634 | SEC_LINKER_CREATED 1635 | SEC_READONLY)); 1636 if (htab->srelgot == NULL 1637 || ! bfd_set_section_alignment (dynobj, htab->srelgot, 2)) 1638 return FALSE; 1639 1640 return TRUE; 1641 } 1642 1643 /* Create dynamic sections when linking against a dynamic object. */ 1644 1645 static bfd_boolean 1646 m32r_elf_create_dynamic_sections (bfd *abfd, struct bfd_link_info *info) 1647 { 1648 struct elf_m32r_link_hash_table *htab; 1649 flagword flags, pltflags; 1650 asection *s; 1651 const struct elf_backend_data *bed = get_elf_backend_data (abfd); 1652 int ptralign = 2; /* 32bit */ 1653 1654 htab = m32r_elf_hash_table (info); 1655 1656 /* We need to create .plt, .rel[a].plt, .got, .got.plt, .dynbss, and 1657 .rel[a].bss sections. */ 1658 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY 1659 | SEC_LINKER_CREATED); 1660 1661 pltflags = flags; 1662 pltflags |= SEC_CODE; 1663 if (bed->plt_not_loaded) 1664 pltflags &= ~ (SEC_LOAD | SEC_HAS_CONTENTS); 1665 if (bed->plt_readonly) 1666 pltflags |= SEC_READONLY; 1667 1668 s = bfd_make_section_with_flags (abfd, ".plt", pltflags); 1669 htab->splt = s; 1670 if (s == NULL 1671 || ! bfd_set_section_alignment (abfd, s, bed->plt_alignment)) 1672 return FALSE; 1673 1674 if (bed->want_plt_sym) 1675 { 1676 /* Define the symbol _PROCEDURE_LINKAGE_TABLE_ at the start of the 1677 .plt section. */ 1678 struct bfd_link_hash_entry *bh = NULL; 1679 struct elf_link_hash_entry *h; 1680 1681 if (! (_bfd_generic_link_add_one_symbol 1682 (info, abfd, "_PROCEDURE_LINKAGE_TABLE_", BSF_GLOBAL, s, 1683 (bfd_vma) 0, NULL, FALSE, 1684 get_elf_backend_data (abfd)->collect, &bh))) 1685 return FALSE; 1686 h = (struct elf_link_hash_entry *) bh; 1687 h->def_regular = 1; 1688 h->type = STT_OBJECT; 1689 htab->root.hplt = h; 1690 1691 if (info->shared 1692 && ! bfd_elf_link_record_dynamic_symbol (info, h)) 1693 return FALSE; 1694 } 1695 1696 s = bfd_make_section_with_flags (abfd, 1697 bed->default_use_rela_p ? ".rela.plt" : ".rel.plt", 1698 flags | SEC_READONLY); 1699 htab->srelplt = s; 1700 if (s == NULL 1701 || ! bfd_set_section_alignment (abfd, s, ptralign)) 1702 return FALSE; 1703 1704 if (htab->sgot == NULL 1705 && ! create_got_section (abfd, info)) 1706 return FALSE; 1707 1708 { 1709 const char *secname; 1710 char *relname; 1711 flagword secflags; 1712 asection *sec; 1713 1714 for (sec = abfd->sections; sec; sec = sec->next) 1715 { 1716 secflags = bfd_get_section_flags (abfd, sec); 1717 if ((secflags & (SEC_DATA | SEC_LINKER_CREATED)) 1718 || ((secflags & SEC_HAS_CONTENTS) != SEC_HAS_CONTENTS)) 1719 continue; 1720 secname = bfd_get_section_name (abfd, sec); 1721 relname = bfd_malloc ((bfd_size_type) strlen (secname) + 6); 1722 strcpy (relname, ".rela"); 1723 strcat (relname, secname); 1724 if (bfd_get_section_by_name (abfd, secname)) 1725 continue; 1726 s = bfd_make_section_with_flags (abfd, relname, 1727 flags | SEC_READONLY); 1728 if (s == NULL 1729 || ! bfd_set_section_alignment (abfd, s, ptralign)) 1730 return FALSE; 1731 } 1732 } 1733 1734 if (bed->want_dynbss) 1735 { 1736 /* The .dynbss section is a place to put symbols which are defined 1737 by dynamic objects, are referenced by regular objects, and are 1738 not functions. We must allocate space for them in the process 1739 image and use a R_*_COPY reloc to tell the dynamic linker to 1740 initialize them at run time. The linker script puts the .dynbss 1741 section into the .bss section of the final image. */ 1742 s = bfd_make_section_with_flags (abfd, ".dynbss", 1743 SEC_ALLOC | SEC_LINKER_CREATED); 1744 htab->sdynbss = s; 1745 if (s == NULL) 1746 return FALSE; 1747 /* The .rel[a].bss section holds copy relocs. This section is not 1748 normally needed. We need to create it here, though, so that the 1749 linker will map it to an output section. We can't just create it 1750 only if we need it, because we will not know whether we need it 1751 until we have seen all the input files, and the first time the 1752 main linker code calls BFD after examining all the input files 1753 (size_dynamic_sections) the input sections have already been 1754 mapped to the output sections. If the section turns out not to 1755 be needed, we can discard it later. We will never need this 1756 section when generating a shared object, since they do not use 1757 copy relocs. */ 1758 if (! info->shared) 1759 { 1760 s = bfd_make_section_with_flags (abfd, 1761 (bed->default_use_rela_p 1762 ? ".rela.bss" : ".rel.bss"), 1763 flags | SEC_READONLY); 1764 htab->srelbss = s; 1765 if (s == NULL 1766 || ! bfd_set_section_alignment (abfd, s, ptralign)) 1767 return FALSE; 1768 } 1769 } 1770 1771 return TRUE; 1772 } 1773 1774 /* Copy the extra info we tack onto an elf_link_hash_entry. */ 1775 1776 static void 1777 m32r_elf_copy_indirect_symbol (struct bfd_link_info *info, 1778 struct elf_link_hash_entry *dir, 1779 struct elf_link_hash_entry *ind) 1780 { 1781 struct elf_m32r_link_hash_entry * edir; 1782 struct elf_m32r_link_hash_entry * eind; 1783 1784 edir = (struct elf_m32r_link_hash_entry *) dir; 1785 eind = (struct elf_m32r_link_hash_entry *) ind; 1786 1787 if (eind->dyn_relocs != NULL) 1788 { 1789 if (edir->dyn_relocs != NULL) 1790 { 1791 struct elf_m32r_dyn_relocs **pp; 1792 struct elf_m32r_dyn_relocs *p; 1793 1794 /* Add reloc counts against the indirect sym to the direct sym 1795 list. Merge any entries against the same section. */ 1796 for (pp = &eind->dyn_relocs; (p = *pp) != NULL;) 1797 { 1798 struct elf_m32r_dyn_relocs *q; 1799 1800 for (q = edir->dyn_relocs; q != NULL; q = q->next) 1801 if (q->sec == p->sec) 1802 { 1803 q->pc_count += p->pc_count; 1804 q->count += p->count; 1805 *pp = p->next; 1806 break; 1807 } 1808 if (q == NULL) 1809 pp = &p->next; 1810 } 1811 *pp = edir->dyn_relocs; 1812 } 1813 1814 edir->dyn_relocs = eind->dyn_relocs; 1815 eind->dyn_relocs = NULL; 1816 } 1817 1818 _bfd_elf_link_hash_copy_indirect (info, dir, ind); 1819 } 1820 1821 1822 /* Adjust a symbol defined by a dynamic object and referenced by a 1823 regular object. The current definition is in some section of the 1824 dynamic object, but we're not including those sections. We have to 1825 change the definition to something the rest of the link can 1826 understand. */ 1827 1828 static bfd_boolean 1829 m32r_elf_adjust_dynamic_symbol (struct bfd_link_info *info, 1830 struct elf_link_hash_entry *h) 1831 { 1832 struct elf_m32r_link_hash_table *htab; 1833 struct elf_m32r_link_hash_entry *eh; 1834 struct elf_m32r_dyn_relocs *p; 1835 bfd *dynobj; 1836 asection *s; 1837 1838 #ifdef DEBUG_PIC 1839 printf ("m32r_elf_adjust_dynamic_symbol()\n"); 1840 #endif 1841 1842 dynobj = elf_hash_table (info)->dynobj; 1843 1844 /* Make sure we know what is going on here. */ 1845 BFD_ASSERT (dynobj != NULL 1846 && (h->needs_plt 1847 || h->u.weakdef != NULL 1848 || (h->def_dynamic 1849 && h->ref_regular 1850 && !h->def_regular))); 1851 1852 /* If this is a function, put it in the procedure linkage table. We 1853 will fill in the contents of the procedure linkage table later, 1854 when we know the address of the .got section. */ 1855 if (h->type == STT_FUNC 1856 || h->needs_plt) 1857 { 1858 if (! info->shared 1859 && !h->def_dynamic 1860 && !h->ref_dynamic 1861 && h->root.type != bfd_link_hash_undefweak 1862 && h->root.type != bfd_link_hash_undefined) 1863 { 1864 /* This case can occur if we saw a PLT reloc in an input 1865 file, but the symbol was never referred to by a dynamic 1866 object. In such a case, we don't actually need to build 1867 a procedure linkage table, and we can just do a PCREL 1868 reloc instead. */ 1869 h->plt.offset = (bfd_vma) -1; 1870 h->needs_plt = 0; 1871 } 1872 1873 return TRUE; 1874 } 1875 else 1876 h->plt.offset = (bfd_vma) -1; 1877 1878 /* If this is a weak symbol, and there is a real definition, the 1879 processor independent code will have arranged for us to see the 1880 real definition first, and we can just use the same value. */ 1881 if (h->u.weakdef != NULL) 1882 { 1883 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined 1884 || h->u.weakdef->root.type == bfd_link_hash_defweak); 1885 h->root.u.def.section = h->u.weakdef->root.u.def.section; 1886 h->root.u.def.value = h->u.weakdef->root.u.def.value; 1887 return TRUE; 1888 } 1889 1890 /* This is a reference to a symbol defined by a dynamic object which 1891 is not a function. */ 1892 1893 /* If we are creating a shared library, we must presume that the 1894 only references to the symbol are via the global offset table. 1895 For such cases we need not do anything here; the relocations will 1896 be handled correctly by relocate_section. */ 1897 if (info->shared) 1898 return TRUE; 1899 1900 /* If there are no references to this symbol that do not use the 1901 GOT, we don't need to generate a copy reloc. */ 1902 if (!h->non_got_ref) 1903 return TRUE; 1904 1905 /* If -z nocopyreloc was given, we won't generate them either. */ 1906 if (info->nocopyreloc) 1907 { 1908 h->non_got_ref = 0; 1909 return TRUE; 1910 } 1911 1912 eh = (struct elf_m32r_link_hash_entry *) h; 1913 for (p = eh->dyn_relocs; p != NULL; p = p->next) 1914 { 1915 s = p->sec->output_section; 1916 if (s != NULL && (s->flags & (SEC_READONLY | SEC_HAS_CONTENTS)) != 0) 1917 break; 1918 } 1919 1920 /* If we didn't find any dynamic relocs in sections which needs the 1921 copy reloc, then we'll be keeping the dynamic relocs and avoiding 1922 the copy reloc. */ 1923 if (p == NULL) 1924 { 1925 h->non_got_ref = 0; 1926 return TRUE; 1927 } 1928 1929 if (h->size == 0) 1930 { 1931 (*_bfd_error_handler) (_("dynamic variable `%s' is zero size"), 1932 h->root.root.string); 1933 return TRUE; 1934 } 1935 1936 /* We must allocate the symbol in our .dynbss section, which will 1937 become part of the .bss section of the executable. There will be 1938 an entry for this symbol in the .dynsym section. The dynamic 1939 object will contain position independent code, so all references 1940 from the dynamic object to this symbol will go through the global 1941 offset table. The dynamic linker will use the .dynsym entry to 1942 determine the address it must put in the global offset table, so 1943 both the dynamic object and the regular object will refer to the 1944 same memory location for the variable. */ 1945 1946 htab = m32r_elf_hash_table (info); 1947 s = htab->sdynbss; 1948 BFD_ASSERT (s != NULL); 1949 1950 /* We must generate a R_M32R_COPY reloc to tell the dynamic linker 1951 to copy the initial value out of the dynamic object and into the 1952 runtime process image. We need to remember the offset into the 1953 .rela.bss section we are going to use. */ 1954 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0) 1955 { 1956 asection *srel; 1957 1958 srel = htab->srelbss; 1959 BFD_ASSERT (srel != NULL); 1960 srel->size += sizeof (Elf32_External_Rela); 1961 h->needs_copy = 1; 1962 } 1963 1964 return _bfd_elf_adjust_dynamic_copy (h, s); 1965 } 1966 1967 /* Allocate space in .plt, .got and associated reloc sections for 1968 dynamic relocs. */ 1969 1970 static bfd_boolean 1971 allocate_dynrelocs (struct elf_link_hash_entry *h, void * inf) 1972 { 1973 struct bfd_link_info *info; 1974 struct elf_m32r_link_hash_table *htab; 1975 struct elf_m32r_link_hash_entry *eh; 1976 struct elf_m32r_dyn_relocs *p; 1977 1978 if (h->root.type == bfd_link_hash_indirect) 1979 return TRUE; 1980 1981 if (h->root.type == bfd_link_hash_warning) 1982 /* When warning symbols are created, they **replace** the "real" 1983 entry in the hash table, thus we never get to see the real 1984 symbol in a hash traversal. So look at it now. */ 1985 h = (struct elf_link_hash_entry *) h->root.u.i.link; 1986 1987 info = (struct bfd_link_info *) inf; 1988 htab = m32r_elf_hash_table (info); 1989 1990 eh = (struct elf_m32r_link_hash_entry *) h; 1991 1992 if (htab->root.dynamic_sections_created 1993 && h->plt.refcount > 0) 1994 { 1995 /* Make sure this symbol is output as a dynamic symbol. 1996 Undefined weak syms won't yet be marked as dynamic. */ 1997 if (h->dynindx == -1 1998 && !h->forced_local) 1999 { 2000 if (! bfd_elf_link_record_dynamic_symbol (info, h)) 2001 return FALSE; 2002 } 2003 2004 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, info->shared, h)) 2005 { 2006 asection *s = htab->splt; 2007 2008 /* If this is the first .plt entry, make room for the special 2009 first entry. */ 2010 if (s->size == 0) 2011 s->size += PLT_ENTRY_SIZE; 2012 2013 h->plt.offset = s->size; 2014 2015 /* If this symbol is not defined in a regular file, and we are 2016 not generating a shared library, then set the symbol to this 2017 location in the .plt. This is required to make function 2018 pointers compare as equal between the normal executable and 2019 the shared library. */ 2020 if (! info->shared 2021 && !h->def_regular) 2022 { 2023 h->root.u.def.section = s; 2024 h->root.u.def.value = h->plt.offset; 2025 } 2026 2027 /* Make room for this entry. */ 2028 s->size += PLT_ENTRY_SIZE; 2029 2030 /* We also need to make an entry in the .got.plt section, which 2031 will be placed in the .got section by the linker script. */ 2032 htab->sgotplt->size += 4; 2033 2034 /* We also need to make an entry in the .rel.plt section. */ 2035 htab->srelplt->size += sizeof (Elf32_External_Rela); 2036 } 2037 else 2038 { 2039 h->plt.offset = (bfd_vma) -1; 2040 h->needs_plt = 0; 2041 } 2042 } 2043 else 2044 { 2045 h->plt.offset = (bfd_vma) -1; 2046 h->needs_plt = 0; 2047 } 2048 2049 if (h->got.refcount > 0) 2050 { 2051 asection *s; 2052 bfd_boolean dyn; 2053 2054 /* Make sure this symbol is output as a dynamic symbol. 2055 Undefined weak syms won't yet be marked as dynamic. */ 2056 if (h->dynindx == -1 2057 && !h->forced_local) 2058 { 2059 if (! bfd_elf_link_record_dynamic_symbol (info, h)) 2060 return FALSE; 2061 } 2062 2063 s = htab->sgot; 2064 2065 h->got.offset = s->size; 2066 s->size += 4; 2067 dyn = htab->root.dynamic_sections_created; 2068 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h)) 2069 htab->srelgot->size += sizeof (Elf32_External_Rela); 2070 } 2071 else 2072 h->got.offset = (bfd_vma) -1; 2073 2074 if (eh->dyn_relocs == NULL) 2075 return TRUE; 2076 2077 /* In the shared -Bsymbolic case, discard space allocated for 2078 dynamic pc-relative relocs against symbols which turn out to be 2079 defined in regular objects. For the normal shared case, discard 2080 space for pc-relative relocs that have become local due to symbol 2081 visibility changes. */ 2082 2083 if (info->shared) 2084 { 2085 if (h->def_regular 2086 && (h->forced_local 2087 || info->symbolic)) 2088 { 2089 struct elf_m32r_dyn_relocs **pp; 2090 2091 for (pp = &eh->dyn_relocs; (p = *pp) != NULL;) 2092 { 2093 p->count -= p->pc_count; 2094 p->pc_count = 0; 2095 if (p->count == 0) 2096 *pp = p->next; 2097 else 2098 pp = &p->next; 2099 } 2100 } 2101 2102 /* Also discard relocs on undefined weak syms with non-default 2103 visibility. */ 2104 if (eh->dyn_relocs != NULL 2105 && h->root.type == bfd_link_hash_undefweak) 2106 { 2107 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT) 2108 eh->dyn_relocs = NULL; 2109 2110 /* Make sure undefined weak symbols are output as a dynamic 2111 symbol in PIEs. */ 2112 else if (h->dynindx == -1 2113 && !h->forced_local) 2114 { 2115 if (! bfd_elf_link_record_dynamic_symbol (info, h)) 2116 return FALSE; 2117 } 2118 } 2119 } 2120 else 2121 { 2122 /* For the non-shared case, discard space for relocs against 2123 symbols which turn out to need copy relocs or are not 2124 dynamic. */ 2125 2126 if (!h->non_got_ref 2127 && ((h->def_dynamic 2128 && !h->def_regular) 2129 || (htab->root.dynamic_sections_created 2130 && (h->root.type == bfd_link_hash_undefweak 2131 || h->root.type == bfd_link_hash_undefined)))) 2132 { 2133 /* Make sure this symbol is output as a dynamic symbol. 2134 Undefined weak syms won't yet be marked as dynamic. */ 2135 if (h->dynindx == -1 2136 && !h->forced_local) 2137 { 2138 if (! bfd_elf_link_record_dynamic_symbol (info, h)) 2139 return FALSE; 2140 } 2141 2142 /* If that succeeded, we know we'll be keeping all the 2143 relocs. */ 2144 if (h->dynindx != -1) 2145 goto keep; 2146 } 2147 2148 eh->dyn_relocs = NULL; 2149 2150 keep: ; 2151 } 2152 2153 /* Finally, allocate space. */ 2154 for (p = eh->dyn_relocs; p != NULL; p = p->next) 2155 { 2156 asection *sreloc = elf_section_data (p->sec)->sreloc; 2157 sreloc->size += p->count * sizeof (Elf32_External_Rela); 2158 } 2159 2160 return TRUE; 2161 } 2162 2163 /* Find any dynamic relocs that apply to read-only sections. */ 2164 2165 static bfd_boolean 2166 readonly_dynrelocs (struct elf_link_hash_entry *h, void * inf) 2167 { 2168 struct elf_m32r_link_hash_entry *eh; 2169 struct elf_m32r_dyn_relocs *p; 2170 2171 if (h->root.type == bfd_link_hash_warning) 2172 h = (struct elf_link_hash_entry *) h->root.u.i.link; 2173 2174 eh = (struct elf_m32r_link_hash_entry *) h; 2175 for (p = eh->dyn_relocs; p != NULL; p = p->next) 2176 { 2177 asection *s = p->sec->output_section; 2178 2179 if (s != NULL && (s->flags & SEC_READONLY) != 0) 2180 { 2181 struct bfd_link_info *info = (struct bfd_link_info *) inf; 2182 2183 info->flags |= DF_TEXTREL; 2184 2185 /* Not an error, just cut short the traversal. */ 2186 return FALSE; 2187 } 2188 } 2189 return TRUE; 2190 } 2191 2192 /* Set the sizes of the dynamic sections. */ 2193 2194 static bfd_boolean 2195 m32r_elf_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED, 2196 struct bfd_link_info *info) 2197 { 2198 struct elf_m32r_link_hash_table *htab; 2199 bfd *dynobj; 2200 asection *s; 2201 bfd_boolean relocs; 2202 bfd *ibfd; 2203 2204 #ifdef DEBUG_PIC 2205 printf ("m32r_elf_size_dynamic_sections()\n"); 2206 #endif 2207 2208 htab = m32r_elf_hash_table (info); 2209 dynobj = htab->root.dynobj; 2210 BFD_ASSERT (dynobj != NULL); 2211 2212 if (htab->root.dynamic_sections_created) 2213 { 2214 /* Set the contents of the .interp section to the interpreter. */ 2215 if (info->executable) 2216 { 2217 s = bfd_get_section_by_name (dynobj, ".interp"); 2218 BFD_ASSERT (s != NULL); 2219 s->size = sizeof ELF_DYNAMIC_INTERPRETER; 2220 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER; 2221 } 2222 } 2223 2224 /* Set up .got offsets for local syms, and space for local dynamic 2225 relocs. */ 2226 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) 2227 { 2228 bfd_signed_vma *local_got; 2229 bfd_signed_vma *end_local_got; 2230 bfd_size_type locsymcount; 2231 Elf_Internal_Shdr *symtab_hdr; 2232 asection *srel; 2233 2234 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour) 2235 continue; 2236 2237 for (s = ibfd->sections; s != NULL; s = s->next) 2238 { 2239 struct elf_m32r_dyn_relocs *p; 2240 2241 for (p = ((struct elf_m32r_dyn_relocs *) 2242 elf_section_data (s)->local_dynrel); 2243 p != NULL; 2244 p = p->next) 2245 { 2246 if (! bfd_is_abs_section (p->sec) 2247 && bfd_is_abs_section (p->sec->output_section)) 2248 { 2249 /* Input section has been discarded, either because 2250 it is a copy of a linkonce section or due to 2251 linker script /DISCARD/, so we'll be discarding 2252 the relocs too. */ 2253 } 2254 else if (p->count != 0) 2255 { 2256 srel = elf_section_data (p->sec)->sreloc; 2257 srel->size += p->count * sizeof (Elf32_External_Rela); 2258 if ((p->sec->output_section->flags & SEC_READONLY) != 0) 2259 info->flags |= DF_TEXTREL; 2260 } 2261 } 2262 } 2263 2264 local_got = elf_local_got_refcounts (ibfd); 2265 if (!local_got) 2266 continue; 2267 2268 symtab_hdr = &elf_tdata (ibfd)->symtab_hdr; 2269 locsymcount = symtab_hdr->sh_info; 2270 end_local_got = local_got + locsymcount; 2271 s = htab->sgot; 2272 srel = htab->srelgot; 2273 for (; local_got < end_local_got; ++local_got) 2274 { 2275 if (*local_got > 0) 2276 { 2277 *local_got = s->size; 2278 s->size += 4; 2279 if (info->shared) 2280 srel->size += sizeof (Elf32_External_Rela); 2281 } 2282 else 2283 *local_got = (bfd_vma) -1; 2284 } 2285 } 2286 2287 /* Allocate global sym .plt and .got entries, and space for global 2288 sym dynamic relocs. */ 2289 elf_link_hash_traverse (&htab->root, allocate_dynrelocs, info); 2290 2291 /* We now have determined the sizes of the various dynamic sections. 2292 Allocate memory for them. */ 2293 relocs = FALSE; 2294 for (s = dynobj->sections; s != NULL; s = s->next) 2295 { 2296 if ((s->flags & SEC_LINKER_CREATED) == 0) 2297 continue; 2298 2299 if (s == htab->splt 2300 || s == htab->sgot 2301 || s == htab->sgotplt 2302 || s == htab->sdynbss) 2303 { 2304 /* Strip this section if we don't need it; see the 2305 comment below. */ 2306 } 2307 else if (CONST_STRNEQ (bfd_get_section_name (dynobj, s), ".rela")) 2308 { 2309 if (s->size != 0 && s != htab->srelplt) 2310 relocs = TRUE; 2311 2312 /* We use the reloc_count field as a counter if we need 2313 to copy relocs into the output file. */ 2314 s->reloc_count = 0; 2315 } 2316 else 2317 /* It's not one of our sections, so don't allocate space. */ 2318 continue; 2319 2320 if (s->size == 0) 2321 { 2322 /* If we don't need this section, strip it from the 2323 output file. This is mostly to handle .rela.bss and 2324 .rela.plt. We must create both sections in 2325 create_dynamic_sections, because they must be created 2326 before the linker maps input sections to output 2327 sections. The linker does that before 2328 adjust_dynamic_symbol is called, and it is that 2329 function which decides whether anything needs to go 2330 into these sections. */ 2331 s->flags |= SEC_EXCLUDE; 2332 continue; 2333 } 2334 2335 if ((s->flags & SEC_HAS_CONTENTS) == 0) 2336 continue; 2337 2338 /* Allocate memory for the section contents. We use bfd_zalloc 2339 here in case unused entries are not reclaimed before the 2340 section's contents are written out. This should not happen, 2341 but this way if it does, we get a R_M32R_NONE reloc instead 2342 of garbage. */ 2343 s->contents = bfd_zalloc (dynobj, s->size); 2344 if (s->contents == NULL) 2345 return FALSE; 2346 } 2347 2348 if (htab->root.dynamic_sections_created) 2349 { 2350 /* Add some entries to the .dynamic section. We fill in the 2351 values later, in m32r_elf_finish_dynamic_sections, but we 2352 must add the entries now so that we get the correct size for 2353 the .dynamic section. The DT_DEBUG entry is filled in by the 2354 dynamic linker and used by the debugger. */ 2355 #define add_dynamic_entry(TAG, VAL) \ 2356 _bfd_elf_add_dynamic_entry (info, TAG, VAL) 2357 2358 if (info->executable) 2359 { 2360 if (! add_dynamic_entry (DT_DEBUG, 0)) 2361 return FALSE; 2362 } 2363 2364 if (htab->splt->size != 0) 2365 { 2366 if (! add_dynamic_entry (DT_PLTGOT, 0) 2367 || ! add_dynamic_entry (DT_PLTRELSZ, 0) 2368 || ! add_dynamic_entry (DT_PLTREL, DT_RELA) 2369 || ! add_dynamic_entry (DT_JMPREL, 0)) 2370 return FALSE; 2371 } 2372 2373 if (relocs) 2374 { 2375 if (! add_dynamic_entry (DT_RELA, 0) 2376 || ! add_dynamic_entry (DT_RELASZ, 0) 2377 || ! add_dynamic_entry (DT_RELAENT, 2378 sizeof (Elf32_External_Rela))) 2379 return FALSE; 2380 2381 /* If any dynamic relocs apply to a read-only section, 2382 then we need a DT_TEXTREL entry. */ 2383 if ((info->flags & DF_TEXTREL) == 0) 2384 elf_link_hash_traverse (&htab->root, readonly_dynrelocs, 2385 info); 2386 2387 if ((info->flags & DF_TEXTREL) != 0) 2388 { 2389 if (! add_dynamic_entry (DT_TEXTREL, 0)) 2390 return FALSE; 2391 } 2392 } 2393 } 2394 #undef add_dynamic_entry 2395 2396 return TRUE; 2397 } 2398 2399 /* Relocate an M32R/D ELF section. 2400 There is some attempt to make this function usable for many architectures, 2401 both for RELA and REL type relocs, if only to serve as a learning tool. 2402 2403 The RELOCATE_SECTION function is called by the new ELF backend linker 2404 to handle the relocations for a section. 2405 2406 The relocs are always passed as Rela structures; if the section 2407 actually uses Rel structures, the r_addend field will always be 2408 zero. 2409 2410 This function is responsible for adjust the section contents as 2411 necessary, and (if using Rela relocs and generating a 2412 relocatable output file) adjusting the reloc addend as 2413 necessary. 2414 2415 This function does not have to worry about setting the reloc 2416 address or the reloc symbol index. 2417 2418 LOCAL_SYMS is a pointer to the swapped in local symbols. 2419 2420 LOCAL_SECTIONS is an array giving the section in the input file 2421 corresponding to the st_shndx field of each local symbol. 2422 2423 The global hash table entry for the global symbols can be found 2424 via elf_sym_hashes (input_bfd). 2425 2426 When generating relocatable output, this function must handle 2427 STB_LOCAL/STT_SECTION symbols specially. The output symbol is 2428 going to be the section symbol corresponding to the output 2429 section, which means that the addend must be adjusted 2430 accordingly. */ 2431 2432 static bfd_boolean 2433 m32r_elf_relocate_section (bfd *output_bfd ATTRIBUTE_UNUSED, 2434 struct bfd_link_info *info, 2435 bfd *input_bfd, 2436 asection *input_section, 2437 bfd_byte *contents, 2438 Elf_Internal_Rela *relocs, 2439 Elf_Internal_Sym *local_syms, 2440 asection **local_sections) 2441 { 2442 Elf_Internal_Shdr *symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; 2443 struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (input_bfd); 2444 Elf_Internal_Rela *rel, *relend; 2445 /* Assume success. */ 2446 bfd_boolean ret = TRUE; 2447 2448 struct elf_m32r_link_hash_table *htab = m32r_elf_hash_table (info); 2449 bfd *dynobj; 2450 bfd_vma *local_got_offsets; 2451 asection *sgot, *splt, *sreloc; 2452 bfd_vma high_address = bfd_get_section_limit (input_bfd, input_section); 2453 2454 dynobj = htab->root.dynobj; 2455 local_got_offsets = elf_local_got_offsets (input_bfd); 2456 2457 sgot = htab->sgot; 2458 splt = htab->splt; 2459 sreloc = NULL; 2460 2461 rel = relocs; 2462 relend = relocs + input_section->reloc_count; 2463 for (; rel < relend; rel++) 2464 { 2465 int r_type; 2466 reloc_howto_type *howto; 2467 unsigned long r_symndx; 2468 struct elf_link_hash_entry *h; 2469 /* We can't modify r_addend here as elf_link_input_bfd has an assert to 2470 ensure it's zero (we use REL relocs, not RELA). Therefore this 2471 should be assigning zero to `addend', but for clarity we use 2472 `r_addend'. */ 2473 bfd_vma addend = rel->r_addend; 2474 bfd_vma offset = rel->r_offset; 2475 bfd_vma relocation; 2476 Elf_Internal_Sym *sym; 2477 asection *sec; 2478 const char *sym_name; 2479 bfd_reloc_status_type r; 2480 const char *errmsg = NULL; 2481 bfd_boolean use_rel = FALSE; 2482 2483 h = NULL; 2484 r_type = ELF32_R_TYPE (rel->r_info); 2485 if (r_type < 0 || r_type >= (int) R_M32R_max) 2486 { 2487 (*_bfd_error_handler) (_("%B: unknown relocation type %d"), 2488 input_bfd, 2489 (int) r_type); 2490 bfd_set_error (bfd_error_bad_value); 2491 ret = FALSE; 2492 continue; 2493 } 2494 2495 if ( r_type == R_M32R_GNU_VTENTRY 2496 || r_type == R_M32R_GNU_VTINHERIT 2497 || r_type == R_M32R_NONE 2498 || r_type == R_M32R_RELA_GNU_VTENTRY 2499 || r_type == R_M32R_RELA_GNU_VTINHERIT) 2500 continue; 2501 2502 if (r_type <= R_M32R_GNU_VTENTRY) 2503 use_rel = TRUE; 2504 2505 howto = m32r_elf_howto_table + r_type; 2506 r_symndx = ELF32_R_SYM (rel->r_info); 2507 2508 sym = NULL; 2509 sec = NULL; 2510 h = NULL; 2511 2512 if (r_symndx < symtab_hdr->sh_info) 2513 { 2514 /* Local symbol. */ 2515 sym = local_syms + r_symndx; 2516 sec = local_sections[r_symndx]; 2517 sym_name = "<local symbol>"; 2518 2519 if (!use_rel) 2520 { 2521 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel); 2522 addend = rel->r_addend; 2523 } 2524 else 2525 { 2526 relocation = (sec->output_section->vma 2527 + sec->output_offset 2528 + sym->st_value); 2529 } 2530 } 2531 else 2532 { 2533 /* External symbol. */ 2534 relocation = 0; 2535 2536 h = sym_hashes[r_symndx - symtab_hdr->sh_info]; 2537 while (h->root.type == bfd_link_hash_indirect 2538 || h->root.type == bfd_link_hash_warning) 2539 h = (struct elf_link_hash_entry *) h->root.u.i.link; 2540 sym_name = h->root.root.string; 2541 2542 if (h->root.type == bfd_link_hash_defined 2543 || h->root.type == bfd_link_hash_defweak) 2544 { 2545 bfd_boolean dyn; 2546 sec = h->root.u.def.section; 2547 2548 dyn = htab->root.dynamic_sections_created; 2549 sec = h->root.u.def.section; 2550 if (r_type == R_M32R_GOTPC24 2551 || (r_type == R_M32R_GOTPC_HI_ULO 2552 || r_type == R_M32R_GOTPC_HI_SLO 2553 || r_type == R_M32R_GOTPC_LO) 2554 || (r_type == R_M32R_26_PLTREL 2555 && h->plt.offset != (bfd_vma) -1) 2556 || ((r_type == R_M32R_GOT24 2557 || r_type == R_M32R_GOT16_HI_ULO 2558 || r_type == R_M32R_GOT16_HI_SLO 2559 || r_type == R_M32R_GOT16_LO) 2560 && WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 2561 info->shared, h) 2562 && (! info->shared 2563 || (! info->symbolic && h->dynindx != -1) 2564 || !h->def_regular)) 2565 || (info->shared 2566 && ((! info->symbolic && h->dynindx != -1) 2567 || !h->def_regular) 2568 && (((r_type == R_M32R_16_RELA 2569 || r_type == R_M32R_32_RELA 2570 || r_type == R_M32R_24_RELA 2571 || r_type == R_M32R_HI16_ULO_RELA 2572 || r_type == R_M32R_HI16_SLO_RELA 2573 || r_type == R_M32R_LO16_RELA) 2574 && !h->forced_local) 2575 || r_type == R_M32R_REL32 2576 || r_type == R_M32R_10_PCREL_RELA 2577 || r_type == R_M32R_18_PCREL_RELA 2578 || r_type == R_M32R_26_PCREL_RELA) 2579 && ((input_section->flags & SEC_ALLOC) != 0 2580 /* DWARF will emit R_M32R_16(24,32) relocations 2581 in its sections against symbols defined 2582 externally in shared libraries. We can't do 2583 anything with them here. */ 2584 || ((input_section->flags & SEC_DEBUGGING) != 0 2585 && h->def_dynamic)))) 2586 { 2587 /* In these cases, we don't need the relocation 2588 value. We check specially because in some 2589 obscure cases sec->output_section will be NULL. */ 2590 } 2591 else if (sec->output_section != NULL) 2592 relocation = (h->root.u.def.value 2593 + sec->output_section->vma 2594 + sec->output_offset); 2595 else if (!info->relocatable) 2596 { 2597 (*_bfd_error_handler) 2598 (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"), 2599 input_bfd, 2600 input_section, 2601 (long) rel->r_offset, 2602 howto->name, 2603 h->root.root.string); 2604 } 2605 } 2606 else if (h->root.type == bfd_link_hash_undefweak) 2607 ; 2608 else if (info->unresolved_syms_in_objects == RM_IGNORE 2609 && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT) 2610 ; 2611 else if (!info->relocatable) 2612 { 2613 if (! ((*info->callbacks->undefined_symbol) 2614 (info, h->root.root.string, input_bfd, 2615 input_section, offset, 2616 (info->unresolved_syms_in_objects == RM_GENERATE_ERROR 2617 || ELF_ST_VISIBILITY (h->other))))) 2618 return FALSE; 2619 } 2620 } 2621 2622 if (sec != NULL && elf_discarded_section (sec)) 2623 { 2624 /* For relocs against symbols from removed linkonce sections, 2625 or sections discarded by a linker script, we just want the 2626 section contents zeroed. Avoid any special processing. */ 2627 _bfd_clear_contents (howto, input_bfd, contents + rel->r_offset); 2628 rel->r_info = 0; 2629 rel->r_addend = 0; 2630 continue; 2631 } 2632 2633 if (info->relocatable && !use_rel) 2634 { 2635 /* This is a relocatable link. We don't have to change 2636 anything, unless the reloc is against a section symbol, 2637 in which case we have to adjust according to where the 2638 section symbol winds up in the output section. */ 2639 if (sym != NULL && ELF_ST_TYPE (sym->st_info) == STT_SECTION) 2640 rel->r_addend += sec->output_offset; 2641 continue; 2642 } 2643 2644 if (info->relocatable && use_rel) 2645 { 2646 /* This is a relocatable link. We don't have to change 2647 anything, unless the reloc is against a section symbol, 2648 in which case we have to adjust according to where the 2649 section symbol winds up in the output section. */ 2650 if (sym == NULL || ELF_ST_TYPE (sym->st_info) != STT_SECTION) 2651 continue; 2652 2653 addend += sec->output_offset; 2654 2655 /* If partial_inplace, we need to store any additional addend 2656 back in the section. */ 2657 if (! howto->partial_inplace) 2658 continue; 2659 /* ??? Here is a nice place to call a special_function 2660 like handler. */ 2661 if (r_type != R_M32R_HI16_SLO && r_type != R_M32R_HI16_ULO) 2662 r = _bfd_relocate_contents (howto, input_bfd, 2663 addend, contents + offset); 2664 else 2665 { 2666 Elf_Internal_Rela *lorel; 2667 2668 /* We allow an arbitrary number of HI16 relocs before the 2669 LO16 reloc. This permits gcc to emit the HI and LO relocs 2670 itself. */ 2671 for (lorel = rel + 1; 2672 (lorel < relend 2673 && (ELF32_R_TYPE (lorel->r_info) == R_M32R_HI16_SLO 2674 || ELF32_R_TYPE (lorel->r_info) == R_M32R_HI16_ULO)); 2675 lorel++) 2676 continue; 2677 if (lorel < relend 2678 && ELF32_R_TYPE (lorel->r_info) == R_M32R_LO16) 2679 { 2680 m32r_elf_relocate_hi16 (input_bfd, r_type, rel, lorel, 2681 contents, addend); 2682 r = bfd_reloc_ok; 2683 } 2684 else 2685 r = _bfd_relocate_contents (howto, input_bfd, 2686 addend, contents + offset); 2687 } 2688 } 2689 else 2690 { 2691 /* Sanity check the address. */ 2692 if (offset > high_address) 2693 { 2694 r = bfd_reloc_outofrange; 2695 goto check_reloc; 2696 } 2697 2698 switch ((int) r_type) 2699 { 2700 case R_M32R_GOTOFF: 2701 /* Relocation is relative to the start of the global offset 2702 table (for ld24 rx, #uimm24). eg access at label+addend 2703 2704 ld24 rx. #label@GOTOFF + addend 2705 sub rx, r12. */ 2706 2707 BFD_ASSERT (sgot != NULL); 2708 2709 relocation = -(relocation - sgot->output_section->vma); 2710 rel->r_addend = -rel->r_addend; 2711 break; 2712 2713 case R_M32R_GOTOFF_HI_ULO: 2714 case R_M32R_GOTOFF_HI_SLO: 2715 case R_M32R_GOTOFF_LO: 2716 BFD_ASSERT (sgot != NULL); 2717 2718 relocation -= sgot->output_section->vma; 2719 2720 if ((r_type == R_M32R_GOTOFF_HI_SLO) 2721 && ((relocation + rel->r_addend) & 0x8000)) 2722 rel->r_addend += 0x10000; 2723 break; 2724 2725 case R_M32R_GOTPC24: 2726 /* .got(_GLOBAL_OFFSET_TABLE_) - pc relocation 2727 ld24 rx,#_GLOBAL_OFFSET_TABLE_ 2728 */ 2729 relocation = sgot->output_section->vma; 2730 break; 2731 2732 case R_M32R_GOTPC_HI_ULO: 2733 case R_M32R_GOTPC_HI_SLO: 2734 case R_M32R_GOTPC_LO: 2735 { 2736 /* .got(_GLOBAL_OFFSET_TABLE_) - pc relocation 2737 bl .+4 2738 seth rx,#high(_GLOBAL_OFFSET_TABLE_) 2739 or3 rx,rx,#low(_GLOBAL_OFFSET_TABLE_ +4) 2740 or 2741 bl .+4 2742 seth rx,#shigh(_GLOBAL_OFFSET_TABLE_) 2743 add3 rx,rx,#low(_GLOBAL_OFFSET_TABLE_ +4) 2744 */ 2745 relocation = sgot->output_section->vma; 2746 relocation -= (input_section->output_section->vma 2747 + input_section->output_offset 2748 + rel->r_offset); 2749 if ((r_type == R_M32R_GOTPC_HI_SLO) 2750 && ((relocation + rel->r_addend) & 0x8000)) 2751 rel->r_addend += 0x10000; 2752 2753 break; 2754 } 2755 case R_M32R_GOT16_HI_ULO: 2756 case R_M32R_GOT16_HI_SLO: 2757 case R_M32R_GOT16_LO: 2758 /* Fall through. */ 2759 case R_M32R_GOT24: 2760 /* Relocation is to the entry for this symbol in the global 2761 offset table. */ 2762 BFD_ASSERT (sgot != NULL); 2763 2764 if (h != NULL) 2765 { 2766 bfd_boolean dyn; 2767 bfd_vma off; 2768 2769 off = h->got.offset; 2770 BFD_ASSERT (off != (bfd_vma) -1); 2771 2772 dyn = htab->root.dynamic_sections_created; 2773 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h) 2774 || (info->shared 2775 && (info->symbolic 2776 || h->dynindx == -1 2777 || h->forced_local) 2778 && h->def_regular)) 2779 { 2780 /* This is actually a static link, or it is a 2781 -Bsymbolic link and the symbol is defined 2782 locally, or the symbol was forced to be local 2783 because of a version file. We must initialize 2784 this entry in the global offset table. Since the 2785 offset must always be a multiple of 4, we use the 2786 least significant bit to record whether we have 2787 initialized it already. 2788 2789 When doing a dynamic link, we create a .rela.got 2790 relocation entry to initialize the value. This 2791 is done in the finish_dynamic_symbol routine. */ 2792 if ((off & 1) != 0) 2793 off &= ~1; 2794 else 2795 { 2796 bfd_put_32 (output_bfd, relocation, 2797 sgot->contents + off); 2798 h->got.offset |= 1; 2799 } 2800 } 2801 2802 relocation = sgot->output_offset + off; 2803 } 2804 else 2805 { 2806 bfd_vma off; 2807 bfd_byte *loc; 2808 2809 BFD_ASSERT (local_got_offsets != NULL 2810 && local_got_offsets[r_symndx] != (bfd_vma) -1); 2811 2812 off = local_got_offsets[r_symndx]; 2813 2814 /* The offset must always be a multiple of 4. We use 2815 the least significant bit to record whether we have 2816 already processed this entry. */ 2817 if ((off & 1) != 0) 2818 off &= ~1; 2819 else 2820 { 2821 bfd_put_32 (output_bfd, relocation, sgot->contents + off); 2822 2823 if (info->shared) 2824 { 2825 asection *srelgot; 2826 Elf_Internal_Rela outrel; 2827 2828 /* We need to generate a R_M32R_RELATIVE reloc 2829 for the dynamic linker. */ 2830 srelgot = bfd_get_section_by_name (dynobj, ".rela.got"); 2831 BFD_ASSERT (srelgot != NULL); 2832 2833 outrel.r_offset = (sgot->output_section->vma 2834 + sgot->output_offset 2835 + off); 2836 outrel.r_info = ELF32_R_INFO (0, R_M32R_RELATIVE); 2837 outrel.r_addend = relocation; 2838 loc = srelgot->contents; 2839 loc += srelgot->reloc_count * sizeof (Elf32_External_Rela); 2840 bfd_elf32_swap_reloca_out (output_bfd, &outrel,loc); 2841 ++srelgot->reloc_count; 2842 } 2843 2844 local_got_offsets[r_symndx] |= 1; 2845 } 2846 2847 relocation = sgot->output_offset + off; 2848 } 2849 if ((r_type == R_M32R_GOT16_HI_SLO) 2850 && ((relocation + rel->r_addend) & 0x8000)) 2851 rel->r_addend += 0x10000; 2852 2853 break; 2854 2855 case R_M32R_26_PLTREL: 2856 /* Relocation is to the entry for this symbol in the 2857 procedure linkage table. */ 2858 2859 /* The native assembler will generate a 26_PLTREL reloc 2860 for a local symbol if you assemble a call from one 2861 section to another when using -K pic. */ 2862 if (h == NULL) 2863 break; 2864 2865 if (h->forced_local) 2866 break; 2867 2868 if (h->plt.offset == (bfd_vma) -1) 2869 /* We didn't make a PLT entry for this symbol. This 2870 happens when statically linking PIC code, or when 2871 using -Bsymbolic. */ 2872 break; 2873 2874 relocation = (splt->output_section->vma 2875 + splt->output_offset 2876 + h->plt.offset); 2877 break; 2878 2879 case R_M32R_HI16_SLO_RELA: 2880 if ((relocation + rel->r_addend) & 0x8000) 2881 rel->r_addend += 0x10000; 2882 /* Fall through. */ 2883 2884 case R_M32R_16_RELA: 2885 case R_M32R_24_RELA: 2886 case R_M32R_32_RELA: 2887 case R_M32R_REL32: 2888 case R_M32R_10_PCREL_RELA: 2889 case R_M32R_18_PCREL_RELA: 2890 case R_M32R_26_PCREL_RELA: 2891 case R_M32R_HI16_ULO_RELA: 2892 case R_M32R_LO16_RELA: 2893 if (info->shared 2894 && r_symndx != 0 2895 && (input_section->flags & SEC_ALLOC) != 0 2896 && (( r_type != R_M32R_10_PCREL_RELA 2897 && r_type != R_M32R_18_PCREL_RELA 2898 && r_type != R_M32R_26_PCREL_RELA 2899 && r_type != R_M32R_REL32) 2900 || (h != NULL 2901 && h->dynindx != -1 2902 && (! info->symbolic 2903 || !h->def_regular)))) 2904 { 2905 Elf_Internal_Rela outrel; 2906 bfd_boolean skip, relocate; 2907 bfd_byte *loc; 2908 2909 /* When generating a shared object, these relocations 2910 are copied into the output file to be resolved at run 2911 time. */ 2912 if (sreloc == NULL) 2913 { 2914 const char *name; 2915 2916 name = (bfd_elf_string_from_elf_section 2917 (input_bfd, 2918 elf_elfheader (input_bfd)->e_shstrndx, 2919 elf_section_data (input_section)->rel_hdr.sh_name)); 2920 if (name == NULL) 2921 return FALSE; 2922 2923 BFD_ASSERT (CONST_STRNEQ (name, ".rela") 2924 && strcmp (bfd_get_section_name (input_bfd, 2925 input_section), 2926 name + 5) == 0); 2927 2928 sreloc = bfd_get_section_by_name (dynobj, name); 2929 BFD_ASSERT (sreloc != NULL); 2930 } 2931 2932 skip = FALSE; 2933 relocate = FALSE; 2934 2935 outrel.r_offset = _bfd_elf_section_offset (output_bfd, 2936 info, 2937 input_section, 2938 rel->r_offset); 2939 if (outrel.r_offset == (bfd_vma) -1) 2940 skip = TRUE; 2941 else if (outrel.r_offset == (bfd_vma) -2) 2942 skip = relocate = TRUE; 2943 outrel.r_offset += (input_section->output_section->vma 2944 + input_section->output_offset); 2945 2946 if (skip) 2947 memset (&outrel, 0, sizeof outrel); 2948 else if ( r_type == R_M32R_10_PCREL_RELA 2949 || r_type == R_M32R_18_PCREL_RELA 2950 || r_type == R_M32R_26_PCREL_RELA 2951 || r_type == R_M32R_REL32) 2952 { 2953 BFD_ASSERT (h != NULL && h->dynindx != -1); 2954 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type); 2955 outrel.r_addend = rel->r_addend; 2956 } 2957 else 2958 { 2959 /* h->dynindx may be -1 if this symbol was marked to 2960 become local. */ 2961 if (h == NULL 2962 || ((info->symbolic || h->dynindx == -1) 2963 && h->def_regular)) 2964 { 2965 relocate = TRUE; 2966 outrel.r_info = ELF32_R_INFO (0, R_M32R_RELATIVE); 2967 outrel.r_addend = relocation + rel->r_addend; 2968 } 2969 else 2970 { 2971 BFD_ASSERT (h->dynindx != -1); 2972 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type); 2973 outrel.r_addend = relocation + rel->r_addend; 2974 } 2975 } 2976 2977 loc = sreloc->contents; 2978 loc += sreloc->reloc_count * sizeof (Elf32_External_Rela); 2979 bfd_elf32_swap_reloca_out (output_bfd, &outrel,loc); 2980 ++sreloc->reloc_count; 2981 2982 /* If this reloc is against an external symbol, we do 2983 not want to fiddle with the addend. Otherwise, we 2984 need to include the symbol value so that it becomes 2985 an addend for the dynamic reloc. */ 2986 if (! relocate) 2987 continue; 2988 break; 2989 } 2990 else if (r_type != R_M32R_10_PCREL_RELA) 2991 break; 2992 /* Fall through. */ 2993 2994 case (int) R_M32R_10_PCREL : 2995 r = m32r_elf_do_10_pcrel_reloc (input_bfd, howto, input_section, 2996 contents, offset, 2997 sec, relocation, addend); 2998 goto check_reloc; 2999 3000 case (int) R_M32R_HI16_SLO : 3001 case (int) R_M32R_HI16_ULO : 3002 { 3003 Elf_Internal_Rela *lorel; 3004 3005 /* We allow an arbitrary number of HI16 relocs before the 3006 LO16 reloc. This permits gcc to emit the HI and LO relocs 3007 itself. */ 3008 for (lorel = rel + 1; 3009 (lorel < relend 3010 && (ELF32_R_TYPE (lorel->r_info) == R_M32R_HI16_SLO 3011 || ELF32_R_TYPE (lorel->r_info) == R_M32R_HI16_ULO)); 3012 lorel++) 3013 continue; 3014 if (lorel < relend 3015 && ELF32_R_TYPE (lorel->r_info) == R_M32R_LO16) 3016 { 3017 m32r_elf_relocate_hi16 (input_bfd, r_type, rel, lorel, 3018 contents, relocation + addend); 3019 r = bfd_reloc_ok; 3020 } 3021 else 3022 r = _bfd_final_link_relocate (howto, input_bfd, input_section, 3023 contents, offset, 3024 relocation, addend); 3025 } 3026 3027 goto check_reloc; 3028 3029 case (int) R_M32R_SDA16_RELA: 3030 case (int) R_M32R_SDA16 : 3031 { 3032 const char *name; 3033 3034 BFD_ASSERT (sec != NULL); 3035 name = bfd_get_section_name (abfd, sec); 3036 3037 if ( strcmp (name, ".sdata") == 0 3038 || strcmp (name, ".sbss") == 0 3039 || strcmp (name, ".scommon") == 0) 3040 { 3041 bfd_vma sda_base; 3042 bfd *out_bfd = sec->output_section->owner; 3043 3044 r = m32r_elf_final_sda_base (out_bfd, info, 3045 &errmsg, 3046 &sda_base); 3047 if (r != bfd_reloc_ok) 3048 { 3049 ret = FALSE; 3050 goto check_reloc; 3051 } 3052 3053 /* At this point `relocation' contains the object's 3054 address. */ 3055 relocation -= sda_base; 3056 /* Now it contains the offset from _SDA_BASE_. */ 3057 } 3058 else 3059 { 3060 (*_bfd_error_handler) 3061 (_("%B: The target (%s) of an %s relocation is in the wrong section (%A)"), 3062 input_bfd, 3063 sec, 3064 sym_name, 3065 m32r_elf_howto_table[(int) r_type].name); 3066 /*bfd_set_error (bfd_error_bad_value); ??? why? */ 3067 ret = FALSE; 3068 continue; 3069 } 3070 } 3071 /* Fall through. */ 3072 3073 default : /* OLD_M32R_RELOC */ 3074 3075 r = _bfd_final_link_relocate (howto, input_bfd, input_section, 3076 contents, offset, 3077 relocation, addend); 3078 goto check_reloc; 3079 } 3080 3081 r = _bfd_final_link_relocate (howto, input_bfd, input_section, 3082 contents, rel->r_offset, 3083 relocation, rel->r_addend); 3084 3085 } 3086 3087 check_reloc: 3088 3089 if (r != bfd_reloc_ok) 3090 { 3091 /* FIXME: This should be generic enough to go in a utility. */ 3092 const char *name; 3093 3094 if (h != NULL) 3095 name = h->root.root.string; 3096 else 3097 { 3098 name = (bfd_elf_string_from_elf_section 3099 (input_bfd, symtab_hdr->sh_link, sym->st_name)); 3100 if (name == NULL || *name == '\0') 3101 name = bfd_section_name (input_bfd, sec); 3102 } 3103 3104 if (errmsg != NULL) 3105 goto common_error; 3106 3107 switch (r) 3108 { 3109 case bfd_reloc_overflow: 3110 if (! ((*info->callbacks->reloc_overflow) 3111 (info, (h ? &h->root : NULL), name, howto->name, 3112 (bfd_vma) 0, input_bfd, input_section, offset))) 3113 return FALSE; 3114 break; 3115 3116 case bfd_reloc_undefined: 3117 if (! ((*info->callbacks->undefined_symbol) 3118 (info, name, input_bfd, input_section, 3119 offset, TRUE))) 3120 return FALSE; 3121 break; 3122 3123 case bfd_reloc_outofrange: 3124 errmsg = _("internal error: out of range error"); 3125 goto common_error; 3126 3127 case bfd_reloc_notsupported: 3128 errmsg = _("internal error: unsupported relocation error"); 3129 goto common_error; 3130 3131 case bfd_reloc_dangerous: 3132 errmsg = _("internal error: dangerous error"); 3133 goto common_error; 3134 3135 default: 3136 errmsg = _("internal error: unknown error"); 3137 /* fall through */ 3138 3139 common_error: 3140 if (!((*info->callbacks->warning) 3141 (info, errmsg, name, input_bfd, input_section, 3142 offset))) 3143 return FALSE; 3144 break; 3145 } 3146 } 3147 } 3148 3149 return ret; 3150 } 3151 3152 /* Finish up dynamic symbol handling. We set the contents of various 3153 dynamic sections here. */ 3154 3155 static bfd_boolean 3156 m32r_elf_finish_dynamic_symbol (bfd *output_bfd, 3157 struct bfd_link_info *info, 3158 struct elf_link_hash_entry *h, 3159 Elf_Internal_Sym *sym) 3160 { 3161 struct elf_m32r_link_hash_table *htab; 3162 bfd *dynobj; 3163 bfd_byte *loc; 3164 3165 #ifdef DEBUG_PIC 3166 printf ("m32r_elf_finish_dynamic_symbol()\n"); 3167 #endif 3168 3169 htab = m32r_elf_hash_table (info); 3170 dynobj = htab->root.dynobj; 3171 3172 if (h->plt.offset != (bfd_vma) -1) 3173 { 3174 asection *splt; 3175 asection *sgot; 3176 asection *srela; 3177 3178 bfd_vma plt_index; 3179 bfd_vma got_offset; 3180 Elf_Internal_Rela rela; 3181 3182 /* This symbol has an entry in the procedure linkage table. Set 3183 it up. */ 3184 3185 BFD_ASSERT (h->dynindx != -1); 3186 3187 splt = htab->splt; 3188 sgot = htab->sgotplt; 3189 srela = htab->srelplt; 3190 BFD_ASSERT (splt != NULL && sgot != NULL && srela != NULL); 3191 3192 /* Get the index in the procedure linkage table which 3193 corresponds to this symbol. This is the index of this symbol 3194 in all the symbols for which we are making plt entries. The 3195 first entry in the procedure linkage table is reserved. */ 3196 plt_index = h->plt.offset / PLT_ENTRY_SIZE - 1; 3197 3198 /* Get the offset into the .got table of the entry that 3199 corresponds to this function. Each .got entry is 4 bytes. 3200 The first three are reserved. */ 3201 got_offset = (plt_index + 3) * 4; 3202 3203 /* Fill in the entry in the procedure linkage table. */ 3204 if (! info->shared) 3205 { 3206 bfd_put_32 (output_bfd, 3207 (PLT_ENTRY_WORD0b 3208 + (((sgot->output_section->vma 3209 + sgot->output_offset 3210 + got_offset) >> 16) & 0xffff)), 3211 splt->contents + h->plt.offset); 3212 bfd_put_32 (output_bfd, 3213 (PLT_ENTRY_WORD1b 3214 + ((sgot->output_section->vma 3215 + sgot->output_offset 3216 + got_offset) & 0xffff)), 3217 splt->contents + h->plt.offset + 4); 3218 bfd_put_32 (output_bfd, PLT_ENTRY_WORD2, 3219 splt->contents + h->plt.offset + 8); 3220 bfd_put_32 (output_bfd, 3221 (PLT_ENTRY_WORD3 3222 + plt_index * sizeof (Elf32_External_Rela)), 3223 splt->contents + h->plt.offset + 12); 3224 bfd_put_32 (output_bfd, 3225 (PLT_ENTRY_WORD4 3226 + (((unsigned int) ((- (h->plt.offset + 16)) >> 2)) & 0xffffff)), 3227 splt->contents + h->plt.offset + 16); 3228 } 3229 else 3230 { 3231 bfd_put_32 (output_bfd, 3232 PLT_ENTRY_WORD0 + got_offset, 3233 splt->contents + h->plt.offset); 3234 bfd_put_32 (output_bfd, PLT_ENTRY_WORD1, 3235 splt->contents + h->plt.offset + 4); 3236 bfd_put_32 (output_bfd, PLT_ENTRY_WORD2, 3237 splt->contents + h->plt.offset + 8); 3238 bfd_put_32 (output_bfd, 3239 (PLT_ENTRY_WORD3 3240 + plt_index * sizeof (Elf32_External_Rela)), 3241 splt->contents + h->plt.offset + 12); 3242 bfd_put_32 (output_bfd, 3243 (PLT_ENTRY_WORD4 3244 + (((unsigned int) ((- (h->plt.offset + 16)) >> 2)) & 0xffffff)), 3245 splt->contents + h->plt.offset + 16); 3246 } 3247 3248 /* Fill in the entry in the global offset table. */ 3249 bfd_put_32 (output_bfd, 3250 (splt->output_section->vma 3251 + splt->output_offset 3252 + h->plt.offset 3253 + 12), /* same offset */ 3254 sgot->contents + got_offset); 3255 3256 /* Fill in the entry in the .rela.plt section. */ 3257 rela.r_offset = (sgot->output_section->vma 3258 + sgot->output_offset 3259 + got_offset); 3260 rela.r_info = ELF32_R_INFO (h->dynindx, R_M32R_JMP_SLOT); 3261 rela.r_addend = 0; 3262 loc = srela->contents; 3263 loc += plt_index * sizeof (Elf32_External_Rela); 3264 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); 3265 3266 if (!h->def_regular) 3267 { 3268 /* Mark the symbol as undefined, rather than as defined in 3269 the .plt section. Leave the value alone. */ 3270 sym->st_shndx = SHN_UNDEF; 3271 } 3272 } 3273 3274 if (h->got.offset != (bfd_vma) -1) 3275 { 3276 asection *sgot; 3277 asection *srela; 3278 Elf_Internal_Rela rela; 3279 3280 /* This symbol has an entry in the global offset table. Set it 3281 up. */ 3282 3283 sgot = htab->sgot; 3284 srela = htab->srelgot; 3285 BFD_ASSERT (sgot != NULL && srela != NULL); 3286 3287 rela.r_offset = (sgot->output_section->vma 3288 + sgot->output_offset 3289 + (h->got.offset &~ 1)); 3290 3291 /* If this is a -Bsymbolic link, and the symbol is defined 3292 locally, we just want to emit a RELATIVE reloc. Likewise if 3293 the symbol was forced to be local because of a version file. 3294 The entry in the global offset table will already have been 3295 initialized in the relocate_section function. */ 3296 if (info->shared 3297 && (info->symbolic 3298 || h->dynindx == -1 3299 || h->forced_local) 3300 && h->def_regular) 3301 { 3302 rela.r_info = ELF32_R_INFO (0, R_M32R_RELATIVE); 3303 rela.r_addend = (h->root.u.def.value 3304 + h->root.u.def.section->output_section->vma 3305 + h->root.u.def.section->output_offset); 3306 } 3307 else 3308 { 3309 BFD_ASSERT ((h->got.offset & 1) == 0); 3310 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + h->got.offset); 3311 rela.r_info = ELF32_R_INFO (h->dynindx, R_M32R_GLOB_DAT); 3312 rela.r_addend = 0; 3313 } 3314 3315 loc = srela->contents; 3316 loc += srela->reloc_count * sizeof (Elf32_External_Rela); 3317 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); 3318 ++srela->reloc_count; 3319 } 3320 3321 if (h->needs_copy) 3322 { 3323 asection *s; 3324 Elf_Internal_Rela rela; 3325 3326 /* This symbols needs a copy reloc. Set it up. */ 3327 3328 BFD_ASSERT (h->dynindx != -1 3329 && (h->root.type == bfd_link_hash_defined 3330 || h->root.type == bfd_link_hash_defweak)); 3331 3332 s = bfd_get_section_by_name (h->root.u.def.section->owner, 3333 ".rela.bss"); 3334 BFD_ASSERT (s != NULL); 3335 3336 rela.r_offset = (h->root.u.def.value 3337 + h->root.u.def.section->output_section->vma 3338 + h->root.u.def.section->output_offset); 3339 rela.r_info = ELF32_R_INFO (h->dynindx, R_M32R_COPY); 3340 rela.r_addend = 0; 3341 loc = s->contents; 3342 loc += s->reloc_count * sizeof (Elf32_External_Rela); 3343 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); 3344 ++s->reloc_count; 3345 } 3346 3347 /* Mark some specially defined symbols as absolute. */ 3348 if (strcmp (h->root.root.string, "_DYNAMIC") == 0 3349 || h == htab->root.hgot) 3350 sym->st_shndx = SHN_ABS; 3351 3352 return TRUE; 3353 } 3354 3355 3356 /* Finish up the dynamic sections. */ 3357 3358 static bfd_boolean 3359 m32r_elf_finish_dynamic_sections (bfd *output_bfd, 3360 struct bfd_link_info *info) 3361 { 3362 struct elf_m32r_link_hash_table *htab; 3363 bfd *dynobj; 3364 asection *sdyn; 3365 asection *sgot; 3366 3367 #ifdef DEBUG_PIC 3368 printf ("m32r_elf_finish_dynamic_sections()\n"); 3369 #endif 3370 3371 htab = m32r_elf_hash_table (info); 3372 dynobj = htab->root.dynobj; 3373 3374 sgot = htab->sgotplt; 3375 sdyn = bfd_get_section_by_name (dynobj, ".dynamic"); 3376 3377 if (htab->root.dynamic_sections_created) 3378 { 3379 asection *splt; 3380 Elf32_External_Dyn *dyncon, *dynconend; 3381 3382 BFD_ASSERT (sgot != NULL && sdyn != NULL); 3383 3384 dyncon = (Elf32_External_Dyn *) sdyn->contents; 3385 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size); 3386 3387 for (; dyncon < dynconend; dyncon++) 3388 { 3389 Elf_Internal_Dyn dyn; 3390 const char *name; 3391 asection *s; 3392 3393 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn); 3394 3395 switch (dyn.d_tag) 3396 { 3397 default: 3398 break; 3399 3400 case DT_PLTGOT: 3401 name = ".got"; 3402 s = htab->sgot->output_section; 3403 goto get_vma; 3404 case DT_JMPREL: 3405 name = ".rela.plt"; 3406 s = htab->srelplt->output_section; 3407 get_vma: 3408 BFD_ASSERT (s != NULL); 3409 dyn.d_un.d_ptr = s->vma; 3410 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); 3411 break; 3412 3413 case DT_PLTRELSZ: 3414 s = htab->srelplt->output_section; 3415 BFD_ASSERT (s != NULL); 3416 dyn.d_un.d_val = s->size; 3417 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); 3418 break; 3419 3420 case DT_RELASZ: 3421 /* My reading of the SVR4 ABI indicates that the 3422 procedure linkage table relocs (DT_JMPREL) should be 3423 included in the overall relocs (DT_RELA). This is 3424 what Solaris does. However, UnixWare can not handle 3425 that case. Therefore, we override the DT_RELASZ entry 3426 here to make it not include the JMPREL relocs. Since 3427 the linker script arranges for .rela.plt to follow all 3428 other relocation sections, we don't have to worry 3429 about changing the DT_RELA entry. */ 3430 if (htab->srelplt != NULL) 3431 { 3432 s = htab->srelplt->output_section; 3433 dyn.d_un.d_val -= s->size; 3434 } 3435 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); 3436 break; 3437 } 3438 } 3439 3440 /* Fill in the first entry in the procedure linkage table. */ 3441 splt = htab->splt; 3442 if (splt && splt->size > 0) 3443 { 3444 if (info->shared) 3445 { 3446 bfd_put_32 (output_bfd, PLT0_PIC_ENTRY_WORD0, splt->contents); 3447 bfd_put_32 (output_bfd, PLT0_PIC_ENTRY_WORD1, splt->contents + 4); 3448 bfd_put_32 (output_bfd, PLT0_PIC_ENTRY_WORD2, splt->contents + 8); 3449 bfd_put_32 (output_bfd, PLT0_PIC_ENTRY_WORD3, splt->contents + 12); 3450 bfd_put_32 (output_bfd, PLT0_PIC_ENTRY_WORD4, splt->contents + 16); 3451 } 3452 else 3453 { 3454 unsigned long addr; 3455 /* addr = .got + 4 */ 3456 addr = sgot->output_section->vma + sgot->output_offset + 4; 3457 bfd_put_32 (output_bfd, 3458 PLT0_ENTRY_WORD0 | ((addr >> 16) & 0xffff), 3459 splt->contents); 3460 bfd_put_32 (output_bfd, 3461 PLT0_ENTRY_WORD1 | (addr & 0xffff), 3462 splt->contents + 4); 3463 bfd_put_32 (output_bfd, PLT0_ENTRY_WORD2, splt->contents + 8); 3464 bfd_put_32 (output_bfd, PLT0_ENTRY_WORD3, splt->contents + 12); 3465 bfd_put_32 (output_bfd, PLT0_ENTRY_WORD4, splt->contents + 16); 3466 } 3467 3468 elf_section_data (splt->output_section)->this_hdr.sh_entsize = 3469 PLT_ENTRY_SIZE; 3470 } 3471 } 3472 3473 /* Fill in the first three entries in the global offset table. */ 3474 if (sgot && sgot->size > 0) 3475 { 3476 if (sdyn == NULL) 3477 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents); 3478 else 3479 bfd_put_32 (output_bfd, 3480 sdyn->output_section->vma + sdyn->output_offset, 3481 sgot->contents); 3482 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 4); 3483 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 8); 3484 3485 elf_section_data (sgot->output_section)->this_hdr.sh_entsize = 4; 3486 } 3487 3488 return TRUE; 3489 } 3490 3491 3492 /* Set the right machine number. */ 3493 3494 static bfd_boolean 3495 m32r_elf_object_p (bfd *abfd) 3496 { 3497 switch (elf_elfheader (abfd)->e_flags & EF_M32R_ARCH) 3498 { 3499 default: 3500 case E_M32R_ARCH: (void) bfd_default_set_arch_mach (abfd, bfd_arch_m32r, bfd_mach_m32r); break; 3501 case E_M32RX_ARCH: (void) bfd_default_set_arch_mach (abfd, bfd_arch_m32r, bfd_mach_m32rx); break; 3502 case E_M32R2_ARCH: (void) bfd_default_set_arch_mach (abfd, bfd_arch_m32r, bfd_mach_m32r2); break; 3503 } 3504 return TRUE; 3505 } 3506 3507 /* Store the machine number in the flags field. */ 3508 3509 static void 3510 m32r_elf_final_write_processing (bfd *abfd, 3511 bfd_boolean linker ATTRIBUTE_UNUSED) 3512 { 3513 unsigned long val; 3514 3515 switch (bfd_get_mach (abfd)) 3516 { 3517 default: 3518 case bfd_mach_m32r: val = E_M32R_ARCH; break; 3519 case bfd_mach_m32rx: val = E_M32RX_ARCH; break; 3520 case bfd_mach_m32r2: val = E_M32R2_ARCH; break; 3521 } 3522 3523 elf_elfheader (abfd)->e_flags &=~ EF_M32R_ARCH; 3524 elf_elfheader (abfd)->e_flags |= val; 3525 } 3526 3527 /* Function to keep M32R specific file flags. */ 3528 3529 static bfd_boolean 3530 m32r_elf_set_private_flags (bfd *abfd, flagword flags) 3531 { 3532 BFD_ASSERT (!elf_flags_init (abfd) 3533 || elf_elfheader (abfd)->e_flags == flags); 3534 3535 elf_elfheader (abfd)->e_flags = flags; 3536 elf_flags_init (abfd) = TRUE; 3537 return TRUE; 3538 } 3539 3540 /* Merge backend specific data from an object file to the output 3541 object file when linking. */ 3542 3543 static bfd_boolean 3544 m32r_elf_merge_private_bfd_data (bfd *ibfd, bfd *obfd) 3545 { 3546 flagword out_flags; 3547 flagword in_flags; 3548 3549 if ( bfd_get_flavour (ibfd) != bfd_target_elf_flavour 3550 || bfd_get_flavour (obfd) != bfd_target_elf_flavour) 3551 return TRUE; 3552 3553 in_flags = elf_elfheader (ibfd)->e_flags; 3554 out_flags = elf_elfheader (obfd)->e_flags; 3555 3556 if (! elf_flags_init (obfd)) 3557 { 3558 /* If the input is the default architecture then do not 3559 bother setting the flags for the output architecture, 3560 instead allow future merges to do this. If no future 3561 merges ever set these flags then they will retain their 3562 unitialised values, which surprise surprise, correspond 3563 to the default values. */ 3564 if (bfd_get_arch_info (ibfd)->the_default) 3565 return TRUE; 3566 3567 elf_flags_init (obfd) = TRUE; 3568 elf_elfheader (obfd)->e_flags = in_flags; 3569 3570 if (bfd_get_arch (obfd) == bfd_get_arch (ibfd) 3571 && bfd_get_arch_info (obfd)->the_default) 3572 return bfd_set_arch_mach (obfd, bfd_get_arch (ibfd), 3573 bfd_get_mach (ibfd)); 3574 3575 return TRUE; 3576 } 3577 3578 /* Check flag compatibility. */ 3579 if (in_flags == out_flags) 3580 return TRUE; 3581 3582 if ((in_flags & EF_M32R_ARCH) != (out_flags & EF_M32R_ARCH)) 3583 { 3584 if ( ((in_flags & EF_M32R_ARCH) != E_M32R_ARCH) 3585 || ((out_flags & EF_M32R_ARCH) == E_M32R_ARCH) 3586 || ((in_flags & EF_M32R_ARCH) == E_M32R2_ARCH)) 3587 { 3588 (*_bfd_error_handler) 3589 (_("%B: Instruction set mismatch with previous modules"), ibfd); 3590 3591 bfd_set_error (bfd_error_bad_value); 3592 return FALSE; 3593 } 3594 } 3595 3596 return TRUE; 3597 } 3598 3599 /* Display the flags field. */ 3600 3601 static bfd_boolean 3602 m32r_elf_print_private_bfd_data (bfd *abfd, void * ptr) 3603 { 3604 FILE * file = (FILE *) ptr; 3605 3606 BFD_ASSERT (abfd != NULL && ptr != NULL); 3607 3608 _bfd_elf_print_private_bfd_data (abfd, ptr); 3609 3610 fprintf (file, _("private flags = %lx"), elf_elfheader (abfd)->e_flags); 3611 3612 switch (elf_elfheader (abfd)->e_flags & EF_M32R_ARCH) 3613 { 3614 default: 3615 case E_M32R_ARCH: fprintf (file, _(": m32r instructions")); break; 3616 case E_M32RX_ARCH: fprintf (file, _(": m32rx instructions")); break; 3617 case E_M32R2_ARCH: fprintf (file, _(": m32r2 instructions")); break; 3618 } 3619 3620 fputc ('\n', file); 3621 3622 return TRUE; 3623 } 3624 3625 static asection * 3626 m32r_elf_gc_mark_hook (asection *sec, 3627 struct bfd_link_info *info, 3628 Elf_Internal_Rela *rel, 3629 struct elf_link_hash_entry *h, 3630 Elf_Internal_Sym *sym) 3631 { 3632 if (h != NULL) 3633 switch (ELF32_R_TYPE (rel->r_info)) 3634 { 3635 case R_M32R_GNU_VTINHERIT: 3636 case R_M32R_GNU_VTENTRY: 3637 case R_M32R_RELA_GNU_VTINHERIT: 3638 case R_M32R_RELA_GNU_VTENTRY: 3639 return NULL; 3640 } 3641 3642 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym); 3643 } 3644 3645 static bfd_boolean 3646 m32r_elf_gc_sweep_hook (bfd *abfd ATTRIBUTE_UNUSED, 3647 struct bfd_link_info *info ATTRIBUTE_UNUSED, 3648 asection *sec ATTRIBUTE_UNUSED, 3649 const Elf_Internal_Rela *relocs ATTRIBUTE_UNUSED) 3650 { 3651 /* Update the got entry reference counts for the section being removed. */ 3652 Elf_Internal_Shdr *symtab_hdr; 3653 struct elf_link_hash_entry **sym_hashes; 3654 bfd_signed_vma *local_got_refcounts; 3655 const Elf_Internal_Rela *rel, *relend; 3656 3657 if (info->relocatable) 3658 return TRUE; 3659 3660 elf_section_data (sec)->local_dynrel = NULL; 3661 3662 symtab_hdr = &elf_tdata (abfd)->symtab_hdr; 3663 sym_hashes = elf_sym_hashes (abfd); 3664 local_got_refcounts = elf_local_got_refcounts (abfd); 3665 3666 relend = relocs + sec->reloc_count; 3667 for (rel = relocs; rel < relend; rel++) 3668 { 3669 unsigned long r_symndx; 3670 struct elf_link_hash_entry *h = NULL; 3671 3672 r_symndx = ELF32_R_SYM (rel->r_info); 3673 if (r_symndx >= symtab_hdr->sh_info) 3674 { 3675 h = sym_hashes[r_symndx - symtab_hdr->sh_info]; 3676 while (h->root.type == bfd_link_hash_indirect 3677 || h->root.type == bfd_link_hash_warning) 3678 h = (struct elf_link_hash_entry *) h->root.u.i.link; 3679 } 3680 3681 switch (ELF32_R_TYPE (rel->r_info)) 3682 { 3683 case R_M32R_GOT16_HI_ULO: 3684 case R_M32R_GOT16_HI_SLO: 3685 case R_M32R_GOT16_LO: 3686 case R_M32R_GOTOFF: 3687 case R_M32R_GOTOFF_HI_ULO: 3688 case R_M32R_GOTOFF_HI_SLO: 3689 case R_M32R_GOTOFF_LO: 3690 case R_M32R_GOT24: 3691 case R_M32R_GOTPC_HI_ULO: 3692 case R_M32R_GOTPC_HI_SLO: 3693 case R_M32R_GOTPC_LO: 3694 case R_M32R_GOTPC24: 3695 if (h != NULL) 3696 { 3697 if (h->got.refcount > 0) 3698 h->got.refcount--; 3699 } 3700 else 3701 { 3702 if (local_got_refcounts && local_got_refcounts[r_symndx] > 0) 3703 local_got_refcounts[r_symndx]--; 3704 } 3705 break; 3706 3707 case R_M32R_16_RELA: 3708 case R_M32R_24_RELA: 3709 case R_M32R_32_RELA: 3710 case R_M32R_REL32: 3711 case R_M32R_HI16_ULO_RELA: 3712 case R_M32R_HI16_SLO_RELA: 3713 case R_M32R_LO16_RELA: 3714 case R_M32R_SDA16_RELA: 3715 case R_M32R_10_PCREL_RELA: 3716 case R_M32R_18_PCREL_RELA: 3717 case R_M32R_26_PCREL_RELA: 3718 if (h != NULL) 3719 { 3720 struct elf_m32r_link_hash_entry *eh; 3721 struct elf_m32r_dyn_relocs **pp; 3722 struct elf_m32r_dyn_relocs *p; 3723 3724 if (!info->shared && h->plt.refcount > 0) 3725 h->plt.refcount -= 1; 3726 3727 eh = (struct elf_m32r_link_hash_entry *) h; 3728 3729 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next) 3730 if (p->sec == sec) 3731 { 3732 if ( ELF32_R_TYPE (rel->r_info) == R_M32R_26_PCREL_RELA 3733 || ELF32_R_TYPE (rel->r_info) == R_M32R_18_PCREL_RELA 3734 || ELF32_R_TYPE (rel->r_info) == R_M32R_10_PCREL_RELA 3735 || ELF32_R_TYPE (rel->r_info) == R_M32R_REL32) 3736 p->pc_count -= 1; 3737 p->count -= 1; 3738 if (p->count == 0) 3739 *pp = p->next; 3740 break; 3741 } 3742 } 3743 break; 3744 3745 case R_M32R_26_PLTREL: 3746 if (h != NULL) 3747 { 3748 if (h->plt.refcount > 0) 3749 h->plt.refcount--; 3750 } 3751 break; 3752 3753 default: 3754 break; 3755 } 3756 } 3757 3758 return TRUE; 3759 } 3760 3761 /* Look through the relocs for a section during the first phase. 3762 Since we don't do .gots or .plts, we just need to consider the 3763 virtual table relocs for gc. */ 3764 3765 static bfd_boolean 3766 m32r_elf_check_relocs (bfd *abfd, 3767 struct bfd_link_info *info, 3768 asection *sec, 3769 const Elf_Internal_Rela *relocs) 3770 { 3771 Elf_Internal_Shdr *symtab_hdr; 3772 struct elf_link_hash_entry **sym_hashes; 3773 const Elf_Internal_Rela *rel; 3774 const Elf_Internal_Rela *rel_end; 3775 struct elf_m32r_link_hash_table *htab; 3776 bfd *dynobj; 3777 bfd_vma *local_got_offsets; 3778 asection *sgot, *srelgot, *sreloc; 3779 3780 if (info->relocatable) 3781 return TRUE; 3782 3783 sgot = srelgot = sreloc = NULL; 3784 3785 symtab_hdr = &elf_tdata (abfd)->symtab_hdr; 3786 sym_hashes = elf_sym_hashes (abfd); 3787 3788 htab = m32r_elf_hash_table (info); 3789 dynobj = htab->root.dynobj; 3790 local_got_offsets = elf_local_got_offsets (abfd); 3791 3792 rel_end = relocs + sec->reloc_count; 3793 for (rel = relocs; rel < rel_end; rel++) 3794 { 3795 int r_type; 3796 struct elf_link_hash_entry *h; 3797 unsigned long r_symndx; 3798 3799 r_symndx = ELF32_R_SYM (rel->r_info); 3800 r_type = ELF32_R_TYPE (rel->r_info); 3801 if (r_symndx < symtab_hdr->sh_info) 3802 h = NULL; 3803 else 3804 { 3805 h = sym_hashes[r_symndx - symtab_hdr->sh_info]; 3806 while (h->root.type == bfd_link_hash_indirect 3807 || h->root.type == bfd_link_hash_warning) 3808 h = (struct elf_link_hash_entry *) h->root.u.i.link; 3809 } 3810 3811 /* Some relocs require a global offset table. */ 3812 if (htab->sgot == NULL) 3813 { 3814 switch (r_type) 3815 { 3816 case R_M32R_GOT16_HI_ULO: 3817 case R_M32R_GOT16_HI_SLO: 3818 case R_M32R_GOTOFF: 3819 case R_M32R_GOTOFF_HI_ULO: 3820 case R_M32R_GOTOFF_HI_SLO: 3821 case R_M32R_GOTOFF_LO: 3822 case R_M32R_GOT16_LO: 3823 case R_M32R_GOTPC24: 3824 case R_M32R_GOTPC_HI_ULO: 3825 case R_M32R_GOTPC_HI_SLO: 3826 case R_M32R_GOTPC_LO: 3827 case R_M32R_GOT24: 3828 if (dynobj == NULL) 3829 htab->root.dynobj = dynobj = abfd; 3830 if (! create_got_section (dynobj, info)) 3831 return FALSE; 3832 break; 3833 3834 default: 3835 break; 3836 } 3837 } 3838 3839 switch (r_type) 3840 { 3841 case R_M32R_GOT16_HI_ULO: 3842 case R_M32R_GOT16_HI_SLO: 3843 case R_M32R_GOT16_LO: 3844 case R_M32R_GOT24: 3845 3846 if (h != NULL) 3847 h->got.refcount += 1; 3848 else 3849 { 3850 bfd_signed_vma *local_got_refcounts; 3851 3852 /* This is a global offset table entry for a local 3853 symbol. */ 3854 local_got_refcounts = elf_local_got_refcounts (abfd); 3855 if (local_got_refcounts == NULL) 3856 { 3857 bfd_size_type size; 3858 3859 size = symtab_hdr->sh_info; 3860 size *= sizeof (bfd_signed_vma); 3861 local_got_refcounts = bfd_zalloc (abfd, size); 3862 if (local_got_refcounts == NULL) 3863 return FALSE; 3864 elf_local_got_refcounts (abfd) = local_got_refcounts; 3865 } 3866 local_got_refcounts[r_symndx] += 1; 3867 } 3868 break; 3869 3870 case R_M32R_26_PLTREL: 3871 /* This symbol requires a procedure linkage table entry. We 3872 actually build the entry in adjust_dynamic_symbol, 3873 because this might be a case of linking PIC code without 3874 linking in any dynamic objects, in which case we don't 3875 need to generate a procedure linkage table after all. */ 3876 3877 /* If this is a local symbol, we resolve it directly without 3878 creating a procedure linkage table entry. */ 3879 if (h == NULL) 3880 continue; 3881 3882 if (h->forced_local) 3883 break; 3884 3885 h->needs_plt = 1; 3886 h->plt.refcount += 1; 3887 break; 3888 3889 case R_M32R_16_RELA: 3890 case R_M32R_24_RELA: 3891 case R_M32R_32_RELA: 3892 case R_M32R_REL32: 3893 case R_M32R_HI16_ULO_RELA: 3894 case R_M32R_HI16_SLO_RELA: 3895 case R_M32R_LO16_RELA: 3896 case R_M32R_SDA16_RELA: 3897 case R_M32R_10_PCREL_RELA: 3898 case R_M32R_18_PCREL_RELA: 3899 case R_M32R_26_PCREL_RELA: 3900 3901 if (h != NULL && !info->shared) 3902 { 3903 h->non_got_ref = 1; 3904 h->plt.refcount += 1; 3905 } 3906 3907 /* If we are creating a shared library, and this is a reloc 3908 against a global symbol, or a non PC relative reloc 3909 against a local symbol, then we need to copy the reloc 3910 into the shared library. However, if we are linking with 3911 -Bsymbolic, we do not need to copy a reloc against a 3912 global symbol which is defined in an object we are 3913 including in the link (i.e., DEF_REGULAR is set). At 3914 this point we have not seen all the input files, so it is 3915 possible that DEF_REGULAR is not set now but will be set 3916 later (it is never cleared). We account for that 3917 possibility below by storing information in the 3918 dyn_relocs field of the hash table entry. A similar 3919 situation occurs when creating shared libraries and symbol 3920 visibility changes render the symbol local. 3921 3922 If on the other hand, we are creating an executable, we 3923 may need to keep relocations for symbols satisfied by a 3924 dynamic library if we manage to avoid copy relocs for the 3925 symbol. */ 3926 if ((info->shared 3927 && (sec->flags & SEC_ALLOC) != 0 3928 && (( r_type != R_M32R_26_PCREL_RELA 3929 && r_type != R_M32R_18_PCREL_RELA 3930 && r_type != R_M32R_10_PCREL_RELA 3931 && r_type != R_M32R_REL32) 3932 || (h != NULL 3933 && (! info->symbolic 3934 || h->root.type == bfd_link_hash_defweak 3935 || !h->def_regular)))) 3936 || (!info->shared 3937 && (sec->flags & SEC_ALLOC) != 0 3938 && h != NULL 3939 && (h->root.type == bfd_link_hash_defweak 3940 || !h->def_regular))) 3941 { 3942 struct elf_m32r_dyn_relocs *p; 3943 struct elf_m32r_dyn_relocs **head; 3944 3945 if (dynobj == NULL) 3946 htab->root.dynobj = dynobj = abfd; 3947 3948 /* When creating a shared object, we must copy these 3949 relocs into the output file. We create a reloc 3950 section in dynobj and make room for the reloc. */ 3951 if (sreloc == NULL) 3952 { 3953 const char *name; 3954 3955 name = (bfd_elf_string_from_elf_section 3956 (abfd, 3957 elf_elfheader (abfd)->e_shstrndx, 3958 elf_section_data (sec)->rel_hdr.sh_name)); 3959 if (name == NULL) 3960 return FALSE; 3961 3962 BFD_ASSERT (CONST_STRNEQ (name, ".rela") 3963 && strcmp (bfd_get_section_name (abfd, sec), 3964 name + 5) == 0); 3965 3966 sreloc = bfd_get_section_by_name (dynobj, name); 3967 if (sreloc == NULL) 3968 { 3969 flagword flags; 3970 3971 flags = (SEC_HAS_CONTENTS | SEC_READONLY 3972 | SEC_IN_MEMORY | SEC_LINKER_CREATED); 3973 if ((sec->flags & SEC_ALLOC) != 0) 3974 flags |= SEC_ALLOC | SEC_LOAD; 3975 sreloc = bfd_make_section_with_flags (dynobj, 3976 name, 3977 flags); 3978 if (sreloc == NULL 3979 || ! bfd_set_section_alignment (dynobj, sreloc, 2)) 3980 return FALSE; 3981 } 3982 elf_section_data (sec)->sreloc = sreloc; 3983 } 3984 3985 /* If this is a global symbol, we count the number of 3986 relocations we need for this symbol. */ 3987 if (h != NULL) 3988 head = &((struct elf_m32r_link_hash_entry *) h)->dyn_relocs; 3989 else 3990 { 3991 asection *s; 3992 void *vpp; 3993 3994 /* Track dynamic relocs needed for local syms too. */ 3995 s = bfd_section_from_r_symndx (abfd, &htab->sym_sec, 3996 sec, r_symndx); 3997 if (s == NULL) 3998 return FALSE; 3999 4000 vpp = &elf_section_data (s)->local_dynrel; 4001 head = (struct elf_m32r_dyn_relocs **) vpp; 4002 } 4003 4004 p = *head; 4005 if (p == NULL || p->sec != sec) 4006 { 4007 bfd_size_type amt = sizeof (*p); 4008 4009 p = bfd_alloc (dynobj, amt); 4010 if (p == NULL) 4011 return FALSE; 4012 p->next = *head; 4013 *head = p; 4014 p->sec = sec; 4015 p->count = 0; 4016 p->pc_count = 0; 4017 } 4018 4019 p->count += 1; 4020 if ( ELF32_R_TYPE (rel->r_info) == R_M32R_26_PCREL_RELA 4021 || ELF32_R_TYPE (rel->r_info) == R_M32R_18_PCREL_RELA 4022 || ELF32_R_TYPE (rel->r_info) == R_M32R_10_PCREL_RELA 4023 || ELF32_R_TYPE (rel->r_info) == R_M32R_REL32) 4024 p->pc_count += 1; 4025 } 4026 break; 4027 4028 /* This relocation describes the C++ object vtable hierarchy. 4029 Reconstruct it for later use during GC. */ 4030 case R_M32R_RELA_GNU_VTINHERIT: 4031 case R_M32R_GNU_VTINHERIT: 4032 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset)) 4033 return FALSE; 4034 break; 4035 4036 /* This relocation describes which C++ vtable entries are actually 4037 used. Record for later use during GC. */ 4038 case R_M32R_GNU_VTENTRY: 4039 BFD_ASSERT (h != NULL); 4040 if (h != NULL 4041 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_offset)) 4042 return FALSE; 4043 break; 4044 case R_M32R_RELA_GNU_VTENTRY: 4045 BFD_ASSERT (h != NULL); 4046 if (h != NULL 4047 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend)) 4048 return FALSE; 4049 break; 4050 } 4051 } 4052 4053 return TRUE; 4054 } 4055 4056 static const struct bfd_elf_special_section m32r_elf_special_sections[] = 4057 { 4058 { STRING_COMMA_LEN (".sbss"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE }, 4059 { STRING_COMMA_LEN (".sdata"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, 4060 { NULL, 0, 0, 0, 0 } 4061 }; 4062 4063 static bfd_boolean 4064 m32r_elf_fake_sections (bfd *abfd, 4065 Elf_Internal_Shdr *hdr ATTRIBUTE_UNUSED, 4066 asection *sec) 4067 { 4068 const char *name; 4069 4070 name = bfd_get_section_name (abfd, sec); 4071 4072 /* The generic elf_fake_sections will set up REL_HDR using the 4073 default kind of relocations. But, we may actually need both 4074 kinds of relocations, so we set up the second header here. 4075 4076 This is not necessary for the O32 ABI since that only uses Elf32_Rel 4077 relocations (cf. System V ABI, MIPS RISC Processor Supplement, 4078 3rd Edition, p. 4-17). It breaks the IRIX 5/6 32-bit ld, since one 4079 of the resulting empty .rela.<section> sections starts with 4080 sh_offset == object size, and ld doesn't allow that. While the check 4081 is arguably bogus for empty or SHT_NOBITS sections, it can easily be 4082 avoided by not emitting those useless sections in the first place. */ 4083 if ((sec->flags & SEC_RELOC) != 0) 4084 { 4085 struct bfd_elf_section_data *esd; 4086 bfd_size_type amt = sizeof (Elf_Internal_Shdr); 4087 4088 esd = elf_section_data (sec); 4089 BFD_ASSERT (esd->rel_hdr2 == NULL); 4090 esd->rel_hdr2 = bfd_zalloc (abfd, amt); 4091 if (!esd->rel_hdr2) 4092 return FALSE; 4093 _bfd_elf_init_reloc_shdr (abfd, esd->rel_hdr2, sec, 4094 !sec->use_rela_p); 4095 } 4096 4097 return TRUE; 4098 } 4099 4100 static enum elf_reloc_type_class 4101 m32r_elf_reloc_type_class (const Elf_Internal_Rela *rela) 4102 { 4103 switch ((int) ELF32_R_TYPE (rela->r_info)) 4104 { 4105 case R_M32R_RELATIVE: return reloc_class_relative; 4106 case R_M32R_JMP_SLOT: return reloc_class_plt; 4107 case R_M32R_COPY: return reloc_class_copy; 4108 default: return reloc_class_normal; 4109 } 4110 } 4111 4112 #define ELF_ARCH bfd_arch_m32r 4113 #define ELF_MACHINE_CODE EM_M32R 4114 #define ELF_MACHINE_ALT1 EM_CYGNUS_M32R 4115 #define ELF_MAXPAGESIZE 0x1 /* Explicitly requested by Mitsubishi. */ 4116 4117 #define TARGET_BIG_SYM bfd_elf32_m32r_vec 4118 #define TARGET_BIG_NAME "elf32-m32r" 4119 #define TARGET_LITTLE_SYM bfd_elf32_m32rle_vec 4120 #define TARGET_LITTLE_NAME "elf32-m32rle" 4121 4122 #define elf_info_to_howto m32r_info_to_howto 4123 #define elf_info_to_howto_rel m32r_info_to_howto_rel 4124 #define elf_backend_section_from_bfd_section _bfd_m32r_elf_section_from_bfd_section 4125 #define elf_backend_symbol_processing _bfd_m32r_elf_symbol_processing 4126 #define elf_backend_add_symbol_hook m32r_elf_add_symbol_hook 4127 #define elf_backend_relocate_section m32r_elf_relocate_section 4128 #define elf_backend_gc_mark_hook m32r_elf_gc_mark_hook 4129 #define elf_backend_gc_sweep_hook m32r_elf_gc_sweep_hook 4130 #define elf_backend_check_relocs m32r_elf_check_relocs 4131 4132 #define elf_backend_create_dynamic_sections m32r_elf_create_dynamic_sections 4133 #define bfd_elf32_bfd_link_hash_table_create m32r_elf_link_hash_table_create 4134 #define elf_backend_size_dynamic_sections m32r_elf_size_dynamic_sections 4135 #define elf_backend_omit_section_dynsym \ 4136 ((bfd_boolean (*) (bfd *, struct bfd_link_info *, asection *)) bfd_true) 4137 #define elf_backend_finish_dynamic_sections m32r_elf_finish_dynamic_sections 4138 #define elf_backend_adjust_dynamic_symbol m32r_elf_adjust_dynamic_symbol 4139 #define elf_backend_finish_dynamic_symbol m32r_elf_finish_dynamic_symbol 4140 #define elf_backend_reloc_type_class m32r_elf_reloc_type_class 4141 #define elf_backend_copy_indirect_symbol m32r_elf_copy_indirect_symbol 4142 4143 #define elf_backend_can_gc_sections 1 4144 /*#if !USE_REL 4145 #define elf_backend_rela_normal 1 4146 #endif*/ 4147 #define elf_backend_can_refcount 1 4148 #define elf_backend_want_got_plt 1 4149 #define elf_backend_plt_readonly 1 4150 #define elf_backend_want_plt_sym 0 4151 #define elf_backend_got_header_size 12 4152 4153 #define elf_backend_may_use_rel_p 1 4154 #ifdef USE_M32R_OLD_RELOC 4155 #define elf_backend_default_use_rela_p 0 4156 #define elf_backend_may_use_rela_p 0 4157 #else 4158 #define elf_backend_default_use_rela_p 1 4159 #define elf_backend_may_use_rela_p 1 4160 #define elf_backend_fake_sections m32r_elf_fake_sections 4161 #endif 4162 4163 #define elf_backend_object_p m32r_elf_object_p 4164 #define elf_backend_final_write_processing m32r_elf_final_write_processing 4165 #define bfd_elf32_bfd_merge_private_bfd_data m32r_elf_merge_private_bfd_data 4166 #define bfd_elf32_bfd_set_private_flags m32r_elf_set_private_flags 4167 #define bfd_elf32_bfd_print_private_bfd_data m32r_elf_print_private_bfd_data 4168 #define elf_backend_special_sections m32r_elf_special_sections 4169 4170 #include "elf32-target.h" 4171 4172 #undef ELF_MAXPAGESIZE 4173 #define ELF_MAXPAGESIZE 0x1000 4174 4175 #undef TARGET_BIG_SYM 4176 #define TARGET_BIG_SYM bfd_elf32_m32rlin_vec 4177 #undef TARGET_BIG_NAME 4178 #define TARGET_BIG_NAME "elf32-m32r-linux" 4179 #undef TARGET_LITTLE_SYM 4180 #define TARGET_LITTLE_SYM bfd_elf32_m32rlelin_vec 4181 #undef TARGET_LITTLE_NAME 4182 #define TARGET_LITTLE_NAME "elf32-m32rle-linux" 4183 #undef elf32_bed 4184 #define elf32_bed elf32_m32r_lin_bed 4185 4186 #include "elf32-target.h" 4187 4188