1 /* M32R-specific support for 32-bit ELF. 2 Copyright 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 3 2006, 2007, 2008, 2009, 2010 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 cache. */ 1530 struct sym_cache sym_cache; 1531 }; 1532 1533 /* Traverse an m32r ELF linker hash table. */ 1534 1535 #define m32r_elf_link_hash_traverse(table, func, info) \ 1536 (elf_link_hash_traverse \ 1537 (&(table)->root, \ 1538 (bfd_boolean (*) (struct elf_link_hash_entry *, void *)) (func), \ 1539 (info))) 1540 1541 /* Get the m32r ELF linker hash table from a link_info structure. */ 1542 1543 #define m32r_elf_hash_table(p) \ 1544 (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \ 1545 == M32R_ELF_DATA ? ((struct elf_m32r_link_hash_table *) ((p)->hash)) : NULL) 1546 1547 /* Create an entry in an m32r ELF linker hash table. */ 1548 1549 static struct bfd_hash_entry * 1550 m32r_elf_link_hash_newfunc (struct bfd_hash_entry *entry, 1551 struct bfd_hash_table *table, 1552 const char *string) 1553 { 1554 struct elf_m32r_link_hash_entry *ret = 1555 (struct elf_m32r_link_hash_entry *) entry; 1556 1557 /* Allocate the structure if it has not already been allocated by a 1558 subclass. */ 1559 if (ret == NULL) 1560 ret = bfd_hash_allocate (table, 1561 sizeof (struct elf_m32r_link_hash_entry)); 1562 if (ret == NULL) 1563 return NULL; 1564 1565 /* Call the allocation method of the superclass. */ 1566 ret = ((struct elf_m32r_link_hash_entry *) 1567 _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret, 1568 table, string)); 1569 if (ret != NULL) 1570 { 1571 struct elf_m32r_link_hash_entry *eh; 1572 1573 eh = (struct elf_m32r_link_hash_entry *) ret; 1574 eh->dyn_relocs = NULL; 1575 } 1576 1577 return (struct bfd_hash_entry *) ret; 1578 } 1579 1580 /* Create an m32r ELF linker hash table. */ 1581 1582 static struct bfd_link_hash_table * 1583 m32r_elf_link_hash_table_create (bfd *abfd) 1584 { 1585 struct elf_m32r_link_hash_table *ret; 1586 bfd_size_type amt = sizeof (struct elf_m32r_link_hash_table); 1587 1588 ret = bfd_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 M32R_ELF_DATA)) 1596 { 1597 free (ret); 1598 return NULL; 1599 } 1600 1601 ret->sgot = NULL; 1602 ret->sgotplt = NULL; 1603 ret->srelgot = NULL; 1604 ret->splt = NULL; 1605 ret->srelplt = NULL; 1606 ret->sdynbss = NULL; 1607 ret->srelbss = NULL; 1608 ret->sym_cache.abfd = NULL; 1609 1610 return &ret->root.root; 1611 } 1612 1613 /* Create .got, .gotplt, and .rela.got sections in DYNOBJ, and set up 1614 shortcuts to them in our hash table. */ 1615 1616 static bfd_boolean 1617 create_got_section (bfd *dynobj, struct bfd_link_info *info) 1618 { 1619 struct elf_m32r_link_hash_table *htab; 1620 1621 if (! _bfd_elf_create_got_section (dynobj, info)) 1622 return FALSE; 1623 1624 htab = m32r_elf_hash_table (info); 1625 if (htab == NULL) 1626 return FALSE; 1627 1628 htab->sgot = bfd_get_section_by_name (dynobj, ".got"); 1629 htab->sgotplt = bfd_get_section_by_name (dynobj, ".got.plt"); 1630 htab->srelgot = bfd_get_section_by_name (dynobj, ".rela.got"); 1631 if (! htab->sgot || ! htab->sgotplt || ! htab->srelgot) 1632 abort (); 1633 1634 return TRUE; 1635 } 1636 1637 /* Create dynamic sections when linking against a dynamic object. */ 1638 1639 static bfd_boolean 1640 m32r_elf_create_dynamic_sections (bfd *abfd, struct bfd_link_info *info) 1641 { 1642 struct elf_m32r_link_hash_table *htab; 1643 flagword flags, pltflags; 1644 asection *s; 1645 const struct elf_backend_data *bed = get_elf_backend_data (abfd); 1646 int ptralign = 2; /* 32bit */ 1647 1648 htab = m32r_elf_hash_table (info); 1649 if (htab == NULL) 1650 return FALSE; 1651 1652 /* We need to create .plt, .rel[a].plt, .got, .got.plt, .dynbss, and 1653 .rel[a].bss sections. */ 1654 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY 1655 | SEC_LINKER_CREATED); 1656 1657 pltflags = flags; 1658 pltflags |= SEC_CODE; 1659 if (bed->plt_not_loaded) 1660 pltflags &= ~ (SEC_LOAD | SEC_HAS_CONTENTS); 1661 if (bed->plt_readonly) 1662 pltflags |= SEC_READONLY; 1663 1664 s = bfd_make_section_with_flags (abfd, ".plt", pltflags); 1665 htab->splt = s; 1666 if (s == NULL 1667 || ! bfd_set_section_alignment (abfd, s, bed->plt_alignment)) 1668 return FALSE; 1669 1670 if (bed->want_plt_sym) 1671 { 1672 /* Define the symbol _PROCEDURE_LINKAGE_TABLE_ at the start of the 1673 .plt section. */ 1674 struct bfd_link_hash_entry *bh = NULL; 1675 struct elf_link_hash_entry *h; 1676 1677 if (! (_bfd_generic_link_add_one_symbol 1678 (info, abfd, "_PROCEDURE_LINKAGE_TABLE_", BSF_GLOBAL, s, 1679 (bfd_vma) 0, NULL, FALSE, 1680 get_elf_backend_data (abfd)->collect, &bh))) 1681 return FALSE; 1682 h = (struct elf_link_hash_entry *) bh; 1683 h->def_regular = 1; 1684 h->type = STT_OBJECT; 1685 htab->root.hplt = h; 1686 1687 if (info->shared 1688 && ! bfd_elf_link_record_dynamic_symbol (info, h)) 1689 return FALSE; 1690 } 1691 1692 s = bfd_make_section_with_flags (abfd, 1693 bed->default_use_rela_p ? ".rela.plt" : ".rel.plt", 1694 flags | SEC_READONLY); 1695 htab->srelplt = s; 1696 if (s == NULL 1697 || ! bfd_set_section_alignment (abfd, s, ptralign)) 1698 return FALSE; 1699 1700 if (htab->sgot == NULL 1701 && ! create_got_section (abfd, info)) 1702 return FALSE; 1703 1704 { 1705 const char *secname; 1706 char *relname; 1707 flagword secflags; 1708 asection *sec; 1709 1710 for (sec = abfd->sections; sec; sec = sec->next) 1711 { 1712 secflags = bfd_get_section_flags (abfd, sec); 1713 if ((secflags & (SEC_DATA | SEC_LINKER_CREATED)) 1714 || ((secflags & SEC_HAS_CONTENTS) != SEC_HAS_CONTENTS)) 1715 continue; 1716 secname = bfd_get_section_name (abfd, sec); 1717 relname = bfd_malloc ((bfd_size_type) strlen (secname) + 6); 1718 strcpy (relname, ".rela"); 1719 strcat (relname, secname); 1720 if (bfd_get_section_by_name (abfd, secname)) 1721 continue; 1722 s = bfd_make_section_with_flags (abfd, relname, 1723 flags | SEC_READONLY); 1724 if (s == NULL 1725 || ! bfd_set_section_alignment (abfd, s, ptralign)) 1726 return FALSE; 1727 } 1728 } 1729 1730 if (bed->want_dynbss) 1731 { 1732 /* The .dynbss section is a place to put symbols which are defined 1733 by dynamic objects, are referenced by regular objects, and are 1734 not functions. We must allocate space for them in the process 1735 image and use a R_*_COPY reloc to tell the dynamic linker to 1736 initialize them at run time. The linker script puts the .dynbss 1737 section into the .bss section of the final image. */ 1738 s = bfd_make_section_with_flags (abfd, ".dynbss", 1739 SEC_ALLOC | SEC_LINKER_CREATED); 1740 htab->sdynbss = s; 1741 if (s == NULL) 1742 return FALSE; 1743 /* The .rel[a].bss section holds copy relocs. This section is not 1744 normally needed. We need to create it here, though, so that the 1745 linker will map it to an output section. We can't just create it 1746 only if we need it, because we will not know whether we need it 1747 until we have seen all the input files, and the first time the 1748 main linker code calls BFD after examining all the input files 1749 (size_dynamic_sections) the input sections have already been 1750 mapped to the output sections. If the section turns out not to 1751 be needed, we can discard it later. We will never need this 1752 section when generating a shared object, since they do not use 1753 copy relocs. */ 1754 if (! info->shared) 1755 { 1756 s = bfd_make_section_with_flags (abfd, 1757 (bed->default_use_rela_p 1758 ? ".rela.bss" : ".rel.bss"), 1759 flags | SEC_READONLY); 1760 htab->srelbss = s; 1761 if (s == NULL 1762 || ! bfd_set_section_alignment (abfd, s, ptralign)) 1763 return FALSE; 1764 } 1765 } 1766 1767 return TRUE; 1768 } 1769 1770 /* Copy the extra info we tack onto an elf_link_hash_entry. */ 1771 1772 static void 1773 m32r_elf_copy_indirect_symbol (struct bfd_link_info *info, 1774 struct elf_link_hash_entry *dir, 1775 struct elf_link_hash_entry *ind) 1776 { 1777 struct elf_m32r_link_hash_entry * edir; 1778 struct elf_m32r_link_hash_entry * eind; 1779 1780 edir = (struct elf_m32r_link_hash_entry *) dir; 1781 eind = (struct elf_m32r_link_hash_entry *) ind; 1782 1783 if (eind->dyn_relocs != NULL) 1784 { 1785 if (edir->dyn_relocs != NULL) 1786 { 1787 struct elf_m32r_dyn_relocs **pp; 1788 struct elf_m32r_dyn_relocs *p; 1789 1790 /* Add reloc counts against the indirect sym to the direct sym 1791 list. Merge any entries against the same section. */ 1792 for (pp = &eind->dyn_relocs; (p = *pp) != NULL;) 1793 { 1794 struct elf_m32r_dyn_relocs *q; 1795 1796 for (q = edir->dyn_relocs; q != NULL; q = q->next) 1797 if (q->sec == p->sec) 1798 { 1799 q->pc_count += p->pc_count; 1800 q->count += p->count; 1801 *pp = p->next; 1802 break; 1803 } 1804 if (q == NULL) 1805 pp = &p->next; 1806 } 1807 *pp = edir->dyn_relocs; 1808 } 1809 1810 edir->dyn_relocs = eind->dyn_relocs; 1811 eind->dyn_relocs = NULL; 1812 } 1813 1814 _bfd_elf_link_hash_copy_indirect (info, dir, ind); 1815 } 1816 1817 1818 /* Adjust a symbol defined by a dynamic object and referenced by a 1819 regular object. The current definition is in some section of the 1820 dynamic object, but we're not including those sections. We have to 1821 change the definition to something the rest of the link can 1822 understand. */ 1823 1824 static bfd_boolean 1825 m32r_elf_adjust_dynamic_symbol (struct bfd_link_info *info, 1826 struct elf_link_hash_entry *h) 1827 { 1828 struct elf_m32r_link_hash_table *htab; 1829 struct elf_m32r_link_hash_entry *eh; 1830 struct elf_m32r_dyn_relocs *p; 1831 bfd *dynobj; 1832 asection *s; 1833 1834 #ifdef DEBUG_PIC 1835 printf ("m32r_elf_adjust_dynamic_symbol()\n"); 1836 #endif 1837 1838 dynobj = elf_hash_table (info)->dynobj; 1839 1840 /* Make sure we know what is going on here. */ 1841 BFD_ASSERT (dynobj != NULL 1842 && (h->needs_plt 1843 || h->u.weakdef != NULL 1844 || (h->def_dynamic 1845 && h->ref_regular 1846 && !h->def_regular))); 1847 1848 /* If this is a function, put it in the procedure linkage table. We 1849 will fill in the contents of the procedure linkage table later, 1850 when we know the address of the .got section. */ 1851 if (h->type == STT_FUNC 1852 || h->needs_plt) 1853 { 1854 if (! info->shared 1855 && !h->def_dynamic 1856 && !h->ref_dynamic 1857 && h->root.type != bfd_link_hash_undefweak 1858 && h->root.type != bfd_link_hash_undefined) 1859 { 1860 /* This case can occur if we saw a PLT reloc in an input 1861 file, but the symbol was never referred to by a dynamic 1862 object. In such a case, we don't actually need to build 1863 a procedure linkage table, and we can just do a PCREL 1864 reloc instead. */ 1865 h->plt.offset = (bfd_vma) -1; 1866 h->needs_plt = 0; 1867 } 1868 1869 return TRUE; 1870 } 1871 else 1872 h->plt.offset = (bfd_vma) -1; 1873 1874 /* If this is a weak symbol, and there is a real definition, the 1875 processor independent code will have arranged for us to see the 1876 real definition first, and we can just use the same value. */ 1877 if (h->u.weakdef != NULL) 1878 { 1879 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined 1880 || h->u.weakdef->root.type == bfd_link_hash_defweak); 1881 h->root.u.def.section = h->u.weakdef->root.u.def.section; 1882 h->root.u.def.value = h->u.weakdef->root.u.def.value; 1883 return TRUE; 1884 } 1885 1886 /* This is a reference to a symbol defined by a dynamic object which 1887 is not a function. */ 1888 1889 /* If we are creating a shared library, we must presume that the 1890 only references to the symbol are via the global offset table. 1891 For such cases we need not do anything here; the relocations will 1892 be handled correctly by relocate_section. */ 1893 if (info->shared) 1894 return TRUE; 1895 1896 /* If there are no references to this symbol that do not use the 1897 GOT, we don't need to generate a copy reloc. */ 1898 if (!h->non_got_ref) 1899 return TRUE; 1900 1901 /* If -z nocopyreloc was given, we won't generate them either. */ 1902 if (info->nocopyreloc) 1903 { 1904 h->non_got_ref = 0; 1905 return TRUE; 1906 } 1907 1908 eh = (struct elf_m32r_link_hash_entry *) h; 1909 for (p = eh->dyn_relocs; p != NULL; p = p->next) 1910 { 1911 s = p->sec->output_section; 1912 if (s != NULL && (s->flags & (SEC_READONLY | SEC_HAS_CONTENTS)) != 0) 1913 break; 1914 } 1915 1916 /* If we didn't find any dynamic relocs in sections which needs the 1917 copy reloc, then we'll be keeping the dynamic relocs and avoiding 1918 the copy reloc. */ 1919 if (p == NULL) 1920 { 1921 h->non_got_ref = 0; 1922 return TRUE; 1923 } 1924 1925 if (h->size == 0) 1926 { 1927 (*_bfd_error_handler) (_("dynamic variable `%s' is zero size"), 1928 h->root.root.string); 1929 return TRUE; 1930 } 1931 1932 /* We must allocate the symbol in our .dynbss section, which will 1933 become part of the .bss section of the executable. There will be 1934 an entry for this symbol in the .dynsym section. The dynamic 1935 object will contain position independent code, so all references 1936 from the dynamic object to this symbol will go through the global 1937 offset table. The dynamic linker will use the .dynsym entry to 1938 determine the address it must put in the global offset table, so 1939 both the dynamic object and the regular object will refer to the 1940 same memory location for the variable. */ 1941 1942 htab = m32r_elf_hash_table (info); 1943 if (htab == NULL) 1944 return FALSE; 1945 1946 s = htab->sdynbss; 1947 BFD_ASSERT (s != NULL); 1948 1949 /* We must generate a R_M32R_COPY reloc to tell the dynamic linker 1950 to copy the initial value out of the dynamic object and into the 1951 runtime process image. We need to remember the offset into the 1952 .rela.bss section we are going to use. */ 1953 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0) 1954 { 1955 asection *srel; 1956 1957 srel = htab->srelbss; 1958 BFD_ASSERT (srel != NULL); 1959 srel->size += sizeof (Elf32_External_Rela); 1960 h->needs_copy = 1; 1961 } 1962 1963 return _bfd_elf_adjust_dynamic_copy (h, s); 1964 } 1965 1966 /* Allocate space in .plt, .got and associated reloc sections for 1967 dynamic relocs. */ 1968 1969 static bfd_boolean 1970 allocate_dynrelocs (struct elf_link_hash_entry *h, void * inf) 1971 { 1972 struct bfd_link_info *info; 1973 struct elf_m32r_link_hash_table *htab; 1974 struct elf_m32r_link_hash_entry *eh; 1975 struct elf_m32r_dyn_relocs *p; 1976 1977 if (h->root.type == bfd_link_hash_indirect) 1978 return TRUE; 1979 1980 if (h->root.type == bfd_link_hash_warning) 1981 /* When warning symbols are created, they **replace** the "real" 1982 entry in the hash table, thus we never get to see the real 1983 symbol in a hash traversal. So look at it now. */ 1984 h = (struct elf_link_hash_entry *) h->root.u.i.link; 1985 1986 info = (struct bfd_link_info *) inf; 1987 htab = m32r_elf_hash_table (info); 1988 if (htab == NULL) 1989 return FALSE; 1990 1991 eh = (struct elf_m32r_link_hash_entry *) h; 1992 1993 if (htab->root.dynamic_sections_created 1994 && h->plt.refcount > 0) 1995 { 1996 /* Make sure this symbol is output as a dynamic symbol. 1997 Undefined weak syms won't yet be marked as dynamic. */ 1998 if (h->dynindx == -1 1999 && !h->forced_local) 2000 { 2001 if (! bfd_elf_link_record_dynamic_symbol (info, h)) 2002 return FALSE; 2003 } 2004 2005 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, info->shared, h)) 2006 { 2007 asection *s = htab->splt; 2008 2009 /* If this is the first .plt entry, make room for the special 2010 first entry. */ 2011 if (s->size == 0) 2012 s->size += PLT_ENTRY_SIZE; 2013 2014 h->plt.offset = s->size; 2015 2016 /* If this symbol is not defined in a regular file, and we are 2017 not generating a shared library, then set the symbol to this 2018 location in the .plt. This is required to make function 2019 pointers compare as equal between the normal executable and 2020 the shared library. */ 2021 if (! info->shared 2022 && !h->def_regular) 2023 { 2024 h->root.u.def.section = s; 2025 h->root.u.def.value = h->plt.offset; 2026 } 2027 2028 /* Make room for this entry. */ 2029 s->size += PLT_ENTRY_SIZE; 2030 2031 /* We also need to make an entry in the .got.plt section, which 2032 will be placed in the .got section by the linker script. */ 2033 htab->sgotplt->size += 4; 2034 2035 /* We also need to make an entry in the .rel.plt section. */ 2036 htab->srelplt->size += sizeof (Elf32_External_Rela); 2037 } 2038 else 2039 { 2040 h->plt.offset = (bfd_vma) -1; 2041 h->needs_plt = 0; 2042 } 2043 } 2044 else 2045 { 2046 h->plt.offset = (bfd_vma) -1; 2047 h->needs_plt = 0; 2048 } 2049 2050 if (h->got.refcount > 0) 2051 { 2052 asection *s; 2053 bfd_boolean dyn; 2054 2055 /* Make sure this symbol is output as a dynamic symbol. 2056 Undefined weak syms won't yet be marked as dynamic. */ 2057 if (h->dynindx == -1 2058 && !h->forced_local) 2059 { 2060 if (! bfd_elf_link_record_dynamic_symbol (info, h)) 2061 return FALSE; 2062 } 2063 2064 s = htab->sgot; 2065 2066 h->got.offset = s->size; 2067 s->size += 4; 2068 dyn = htab->root.dynamic_sections_created; 2069 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h)) 2070 htab->srelgot->size += sizeof (Elf32_External_Rela); 2071 } 2072 else 2073 h->got.offset = (bfd_vma) -1; 2074 2075 if (eh->dyn_relocs == NULL) 2076 return TRUE; 2077 2078 /* In the shared -Bsymbolic case, discard space allocated for 2079 dynamic pc-relative relocs against symbols which turn out to be 2080 defined in regular objects. For the normal shared case, discard 2081 space for pc-relative relocs that have become local due to symbol 2082 visibility changes. */ 2083 2084 if (info->shared) 2085 { 2086 if (h->def_regular 2087 && (h->forced_local 2088 || info->symbolic)) 2089 { 2090 struct elf_m32r_dyn_relocs **pp; 2091 2092 for (pp = &eh->dyn_relocs; (p = *pp) != NULL;) 2093 { 2094 p->count -= p->pc_count; 2095 p->pc_count = 0; 2096 if (p->count == 0) 2097 *pp = p->next; 2098 else 2099 pp = &p->next; 2100 } 2101 } 2102 2103 /* Also discard relocs on undefined weak syms with non-default 2104 visibility. */ 2105 if (eh->dyn_relocs != NULL 2106 && h->root.type == bfd_link_hash_undefweak) 2107 { 2108 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT) 2109 eh->dyn_relocs = NULL; 2110 2111 /* Make sure undefined weak symbols are output as a dynamic 2112 symbol in PIEs. */ 2113 else if (h->dynindx == -1 2114 && !h->forced_local) 2115 { 2116 if (! bfd_elf_link_record_dynamic_symbol (info, h)) 2117 return FALSE; 2118 } 2119 } 2120 } 2121 else 2122 { 2123 /* For the non-shared case, discard space for relocs against 2124 symbols which turn out to need copy relocs or are not 2125 dynamic. */ 2126 2127 if (!h->non_got_ref 2128 && ((h->def_dynamic 2129 && !h->def_regular) 2130 || (htab->root.dynamic_sections_created 2131 && (h->root.type == bfd_link_hash_undefweak 2132 || h->root.type == bfd_link_hash_undefined)))) 2133 { 2134 /* Make sure this symbol is output as a dynamic symbol. 2135 Undefined weak syms won't yet be marked as dynamic. */ 2136 if (h->dynindx == -1 2137 && !h->forced_local) 2138 { 2139 if (! bfd_elf_link_record_dynamic_symbol (info, h)) 2140 return FALSE; 2141 } 2142 2143 /* If that succeeded, we know we'll be keeping all the 2144 relocs. */ 2145 if (h->dynindx != -1) 2146 goto keep; 2147 } 2148 2149 eh->dyn_relocs = NULL; 2150 2151 keep: ; 2152 } 2153 2154 /* Finally, allocate space. */ 2155 for (p = eh->dyn_relocs; p != NULL; p = p->next) 2156 { 2157 asection *sreloc = elf_section_data (p->sec)->sreloc; 2158 sreloc->size += p->count * sizeof (Elf32_External_Rela); 2159 } 2160 2161 return TRUE; 2162 } 2163 2164 /* Find any dynamic relocs that apply to read-only sections. */ 2165 2166 static bfd_boolean 2167 readonly_dynrelocs (struct elf_link_hash_entry *h, void * inf) 2168 { 2169 struct elf_m32r_link_hash_entry *eh; 2170 struct elf_m32r_dyn_relocs *p; 2171 2172 if (h->root.type == bfd_link_hash_warning) 2173 h = (struct elf_link_hash_entry *) h->root.u.i.link; 2174 2175 eh = (struct elf_m32r_link_hash_entry *) h; 2176 for (p = eh->dyn_relocs; p != NULL; p = p->next) 2177 { 2178 asection *s = p->sec->output_section; 2179 2180 if (s != NULL && (s->flags & SEC_READONLY) != 0) 2181 { 2182 struct bfd_link_info *info = (struct bfd_link_info *) inf; 2183 2184 info->flags |= DF_TEXTREL; 2185 2186 /* Not an error, just cut short the traversal. */ 2187 return FALSE; 2188 } 2189 } 2190 return TRUE; 2191 } 2192 2193 /* Set the sizes of the dynamic sections. */ 2194 2195 static bfd_boolean 2196 m32r_elf_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED, 2197 struct bfd_link_info *info) 2198 { 2199 struct elf_m32r_link_hash_table *htab; 2200 bfd *dynobj; 2201 asection *s; 2202 bfd_boolean relocs; 2203 bfd *ibfd; 2204 2205 #ifdef DEBUG_PIC 2206 printf ("m32r_elf_size_dynamic_sections()\n"); 2207 #endif 2208 2209 htab = m32r_elf_hash_table (info); 2210 if (htab == NULL) 2211 return FALSE; 2212 2213 dynobj = htab->root.dynobj; 2214 BFD_ASSERT (dynobj != NULL); 2215 2216 if (htab->root.dynamic_sections_created) 2217 { 2218 /* Set the contents of the .interp section to the interpreter. */ 2219 if (info->executable) 2220 { 2221 s = bfd_get_section_by_name (dynobj, ".interp"); 2222 BFD_ASSERT (s != NULL); 2223 s->size = sizeof ELF_DYNAMIC_INTERPRETER; 2224 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER; 2225 } 2226 } 2227 2228 /* Set up .got offsets for local syms, and space for local dynamic 2229 relocs. */ 2230 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) 2231 { 2232 bfd_signed_vma *local_got; 2233 bfd_signed_vma *end_local_got; 2234 bfd_size_type locsymcount; 2235 Elf_Internal_Shdr *symtab_hdr; 2236 asection *srel; 2237 2238 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour) 2239 continue; 2240 2241 for (s = ibfd->sections; s != NULL; s = s->next) 2242 { 2243 struct elf_m32r_dyn_relocs *p; 2244 2245 for (p = ((struct elf_m32r_dyn_relocs *) 2246 elf_section_data (s)->local_dynrel); 2247 p != NULL; 2248 p = p->next) 2249 { 2250 if (! bfd_is_abs_section (p->sec) 2251 && bfd_is_abs_section (p->sec->output_section)) 2252 { 2253 /* Input section has been discarded, either because 2254 it is a copy of a linkonce section or due to 2255 linker script /DISCARD/, so we'll be discarding 2256 the relocs too. */ 2257 } 2258 else if (p->count != 0) 2259 { 2260 srel = elf_section_data (p->sec)->sreloc; 2261 srel->size += p->count * sizeof (Elf32_External_Rela); 2262 if ((p->sec->output_section->flags & SEC_READONLY) != 0) 2263 info->flags |= DF_TEXTREL; 2264 } 2265 } 2266 } 2267 2268 local_got = elf_local_got_refcounts (ibfd); 2269 if (!local_got) 2270 continue; 2271 2272 symtab_hdr = &elf_tdata (ibfd)->symtab_hdr; 2273 locsymcount = symtab_hdr->sh_info; 2274 end_local_got = local_got + locsymcount; 2275 s = htab->sgot; 2276 srel = htab->srelgot; 2277 for (; local_got < end_local_got; ++local_got) 2278 { 2279 if (*local_got > 0) 2280 { 2281 *local_got = s->size; 2282 s->size += 4; 2283 if (info->shared) 2284 srel->size += sizeof (Elf32_External_Rela); 2285 } 2286 else 2287 *local_got = (bfd_vma) -1; 2288 } 2289 } 2290 2291 /* Allocate global sym .plt and .got entries, and space for global 2292 sym dynamic relocs. */ 2293 elf_link_hash_traverse (&htab->root, allocate_dynrelocs, info); 2294 2295 /* We now have determined the sizes of the various dynamic sections. 2296 Allocate memory for them. */ 2297 relocs = FALSE; 2298 for (s = dynobj->sections; s != NULL; s = s->next) 2299 { 2300 if ((s->flags & SEC_LINKER_CREATED) == 0) 2301 continue; 2302 2303 if (s == htab->splt 2304 || s == htab->sgot 2305 || s == htab->sgotplt 2306 || s == htab->sdynbss) 2307 { 2308 /* Strip this section if we don't need it; see the 2309 comment below. */ 2310 } 2311 else if (CONST_STRNEQ (bfd_get_section_name (dynobj, s), ".rela")) 2312 { 2313 if (s->size != 0 && s != htab->srelplt) 2314 relocs = TRUE; 2315 2316 /* We use the reloc_count field as a counter if we need 2317 to copy relocs into the output file. */ 2318 s->reloc_count = 0; 2319 } 2320 else 2321 /* It's not one of our sections, so don't allocate space. */ 2322 continue; 2323 2324 if (s->size == 0) 2325 { 2326 /* If we don't need this section, strip it from the 2327 output file. This is mostly to handle .rela.bss and 2328 .rela.plt. We must create both sections in 2329 create_dynamic_sections, because they must be created 2330 before the linker maps input sections to output 2331 sections. The linker does that before 2332 adjust_dynamic_symbol is called, and it is that 2333 function which decides whether anything needs to go 2334 into these sections. */ 2335 s->flags |= SEC_EXCLUDE; 2336 continue; 2337 } 2338 2339 if ((s->flags & SEC_HAS_CONTENTS) == 0) 2340 continue; 2341 2342 /* Allocate memory for the section contents. We use bfd_zalloc 2343 here in case unused entries are not reclaimed before the 2344 section's contents are written out. This should not happen, 2345 but this way if it does, we get a R_M32R_NONE reloc instead 2346 of garbage. */ 2347 s->contents = bfd_zalloc (dynobj, s->size); 2348 if (s->contents == NULL) 2349 return FALSE; 2350 } 2351 2352 if (htab->root.dynamic_sections_created) 2353 { 2354 /* Add some entries to the .dynamic section. We fill in the 2355 values later, in m32r_elf_finish_dynamic_sections, but we 2356 must add the entries now so that we get the correct size for 2357 the .dynamic section. The DT_DEBUG entry is filled in by the 2358 dynamic linker and used by the debugger. */ 2359 #define add_dynamic_entry(TAG, VAL) \ 2360 _bfd_elf_add_dynamic_entry (info, TAG, VAL) 2361 2362 if (info->executable) 2363 { 2364 if (! add_dynamic_entry (DT_DEBUG, 0)) 2365 return FALSE; 2366 } 2367 2368 if (htab->splt->size != 0) 2369 { 2370 if (! add_dynamic_entry (DT_PLTGOT, 0) 2371 || ! add_dynamic_entry (DT_PLTRELSZ, 0) 2372 || ! add_dynamic_entry (DT_PLTREL, DT_RELA) 2373 || ! add_dynamic_entry (DT_JMPREL, 0)) 2374 return FALSE; 2375 } 2376 2377 if (relocs) 2378 { 2379 if (! add_dynamic_entry (DT_RELA, 0) 2380 || ! add_dynamic_entry (DT_RELASZ, 0) 2381 || ! add_dynamic_entry (DT_RELAENT, 2382 sizeof (Elf32_External_Rela))) 2383 return FALSE; 2384 2385 /* If any dynamic relocs apply to a read-only section, 2386 then we need a DT_TEXTREL entry. */ 2387 if ((info->flags & DF_TEXTREL) == 0) 2388 elf_link_hash_traverse (&htab->root, readonly_dynrelocs, 2389 info); 2390 2391 if ((info->flags & DF_TEXTREL) != 0) 2392 { 2393 if (! add_dynamic_entry (DT_TEXTREL, 0)) 2394 return FALSE; 2395 } 2396 } 2397 } 2398 #undef add_dynamic_entry 2399 2400 return TRUE; 2401 } 2402 2403 /* Relocate an M32R/D ELF section. 2404 There is some attempt to make this function usable for many architectures, 2405 both for RELA and REL type relocs, if only to serve as a learning tool. 2406 2407 The RELOCATE_SECTION function is called by the new ELF backend linker 2408 to handle the relocations for a section. 2409 2410 The relocs are always passed as Rela structures; if the section 2411 actually uses Rel structures, the r_addend field will always be 2412 zero. 2413 2414 This function is responsible for adjust the section contents as 2415 necessary, and (if using Rela relocs and generating a 2416 relocatable output file) adjusting the reloc addend as 2417 necessary. 2418 2419 This function does not have to worry about setting the reloc 2420 address or the reloc symbol index. 2421 2422 LOCAL_SYMS is a pointer to the swapped in local symbols. 2423 2424 LOCAL_SECTIONS is an array giving the section in the input file 2425 corresponding to the st_shndx field of each local symbol. 2426 2427 The global hash table entry for the global symbols can be found 2428 via elf_sym_hashes (input_bfd). 2429 2430 When generating relocatable output, this function must handle 2431 STB_LOCAL/STT_SECTION symbols specially. The output symbol is 2432 going to be the section symbol corresponding to the output 2433 section, which means that the addend must be adjusted 2434 accordingly. */ 2435 2436 static bfd_boolean 2437 m32r_elf_relocate_section (bfd *output_bfd ATTRIBUTE_UNUSED, 2438 struct bfd_link_info *info, 2439 bfd *input_bfd, 2440 asection *input_section, 2441 bfd_byte *contents, 2442 Elf_Internal_Rela *relocs, 2443 Elf_Internal_Sym *local_syms, 2444 asection **local_sections) 2445 { 2446 Elf_Internal_Shdr *symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; 2447 struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (input_bfd); 2448 Elf_Internal_Rela *rel, *relend; 2449 /* Assume success. */ 2450 bfd_boolean ret = TRUE; 2451 struct elf_m32r_link_hash_table *htab = m32r_elf_hash_table (info); 2452 bfd *dynobj; 2453 bfd_vma *local_got_offsets; 2454 asection *sgot, *splt, *sreloc; 2455 bfd_vma high_address = bfd_get_section_limit (input_bfd, input_section); 2456 2457 if (htab == NULL) 2458 return FALSE; 2459 2460 dynobj = htab->root.dynobj; 2461 local_got_offsets = elf_local_got_offsets (input_bfd); 2462 2463 sgot = htab->sgot; 2464 splt = htab->splt; 2465 sreloc = NULL; 2466 2467 rel = relocs; 2468 relend = relocs + input_section->reloc_count; 2469 for (; rel < relend; rel++) 2470 { 2471 int r_type; 2472 reloc_howto_type *howto; 2473 unsigned long r_symndx; 2474 struct elf_link_hash_entry *h; 2475 /* We can't modify r_addend here as elf_link_input_bfd has an assert to 2476 ensure it's zero (we use REL relocs, not RELA). Therefore this 2477 should be assigning zero to `addend', but for clarity we use 2478 `r_addend'. */ 2479 bfd_vma addend = rel->r_addend; 2480 bfd_vma offset = rel->r_offset; 2481 bfd_vma relocation; 2482 Elf_Internal_Sym *sym; 2483 asection *sec; 2484 const char *sym_name; 2485 bfd_reloc_status_type r; 2486 const char *errmsg = NULL; 2487 bfd_boolean use_rel = FALSE; 2488 2489 h = NULL; 2490 r_type = ELF32_R_TYPE (rel->r_info); 2491 if (r_type < 0 || r_type >= (int) R_M32R_max) 2492 { 2493 (*_bfd_error_handler) (_("%B: unknown relocation type %d"), 2494 input_bfd, 2495 (int) r_type); 2496 bfd_set_error (bfd_error_bad_value); 2497 ret = FALSE; 2498 continue; 2499 } 2500 2501 if ( r_type == R_M32R_GNU_VTENTRY 2502 || r_type == R_M32R_GNU_VTINHERIT 2503 || r_type == R_M32R_NONE 2504 || r_type == R_M32R_RELA_GNU_VTENTRY 2505 || r_type == R_M32R_RELA_GNU_VTINHERIT) 2506 continue; 2507 2508 if (r_type <= R_M32R_GNU_VTENTRY) 2509 use_rel = TRUE; 2510 2511 howto = m32r_elf_howto_table + r_type; 2512 r_symndx = ELF32_R_SYM (rel->r_info); 2513 2514 sym = NULL; 2515 sec = NULL; 2516 h = NULL; 2517 2518 if (r_symndx < symtab_hdr->sh_info) 2519 { 2520 /* Local symbol. */ 2521 sym = local_syms + r_symndx; 2522 sec = local_sections[r_symndx]; 2523 sym_name = "<local symbol>"; 2524 2525 if (!use_rel) 2526 { 2527 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel); 2528 addend = rel->r_addend; 2529 } 2530 else 2531 { 2532 relocation = (sec->output_section->vma 2533 + sec->output_offset 2534 + sym->st_value); 2535 } 2536 } 2537 else 2538 { 2539 /* External symbol. */ 2540 relocation = 0; 2541 2542 h = sym_hashes[r_symndx - symtab_hdr->sh_info]; 2543 while (h->root.type == bfd_link_hash_indirect 2544 || h->root.type == bfd_link_hash_warning) 2545 h = (struct elf_link_hash_entry *) h->root.u.i.link; 2546 sym_name = h->root.root.string; 2547 2548 if (h->root.type == bfd_link_hash_defined 2549 || h->root.type == bfd_link_hash_defweak) 2550 { 2551 bfd_boolean dyn; 2552 sec = h->root.u.def.section; 2553 2554 dyn = htab->root.dynamic_sections_created; 2555 sec = h->root.u.def.section; 2556 if (r_type == R_M32R_GOTPC24 2557 || (r_type == R_M32R_GOTPC_HI_ULO 2558 || r_type == R_M32R_GOTPC_HI_SLO 2559 || r_type == R_M32R_GOTPC_LO) 2560 || (r_type == R_M32R_26_PLTREL 2561 && h->plt.offset != (bfd_vma) -1) 2562 || ((r_type == R_M32R_GOT24 2563 || r_type == R_M32R_GOT16_HI_ULO 2564 || r_type == R_M32R_GOT16_HI_SLO 2565 || r_type == R_M32R_GOT16_LO) 2566 && WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 2567 info->shared, h) 2568 && (! info->shared 2569 || (! info->symbolic && h->dynindx != -1) 2570 || !h->def_regular)) 2571 || (info->shared 2572 && ((! info->symbolic && h->dynindx != -1) 2573 || !h->def_regular) 2574 && (((r_type == R_M32R_16_RELA 2575 || r_type == R_M32R_32_RELA 2576 || r_type == R_M32R_24_RELA 2577 || r_type == R_M32R_HI16_ULO_RELA 2578 || r_type == R_M32R_HI16_SLO_RELA 2579 || r_type == R_M32R_LO16_RELA) 2580 && !h->forced_local) 2581 || r_type == R_M32R_REL32 2582 || r_type == R_M32R_10_PCREL_RELA 2583 || r_type == R_M32R_18_PCREL_RELA 2584 || r_type == R_M32R_26_PCREL_RELA) 2585 && ((input_section->flags & SEC_ALLOC) != 0 2586 /* DWARF will emit R_M32R_16(24,32) relocations 2587 in its sections against symbols defined 2588 externally in shared libraries. We can't do 2589 anything with them here. */ 2590 || ((input_section->flags & SEC_DEBUGGING) != 0 2591 && h->def_dynamic)))) 2592 { 2593 /* In these cases, we don't need the relocation 2594 value. We check specially because in some 2595 obscure cases sec->output_section will be NULL. */ 2596 } 2597 else if (sec->output_section != NULL) 2598 relocation = (h->root.u.def.value 2599 + sec->output_section->vma 2600 + sec->output_offset); 2601 else if (!info->relocatable) 2602 { 2603 (*_bfd_error_handler) 2604 (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"), 2605 input_bfd, 2606 input_section, 2607 (long) rel->r_offset, 2608 howto->name, 2609 h->root.root.string); 2610 } 2611 } 2612 else if (h->root.type == bfd_link_hash_undefweak) 2613 ; 2614 else if (info->unresolved_syms_in_objects == RM_IGNORE 2615 && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT) 2616 ; 2617 else if (!info->relocatable) 2618 { 2619 if (! ((*info->callbacks->undefined_symbol) 2620 (info, h->root.root.string, input_bfd, 2621 input_section, offset, 2622 (info->unresolved_syms_in_objects == RM_GENERATE_ERROR 2623 || ELF_ST_VISIBILITY (h->other))))) 2624 return FALSE; 2625 } 2626 } 2627 2628 if (sec != NULL && elf_discarded_section (sec)) 2629 RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section, 2630 rel, relend, howto, contents); 2631 2632 if (info->relocatable && !use_rel) 2633 { 2634 /* This is a relocatable link. We don't have to change 2635 anything, unless the reloc is against a section symbol, 2636 in which case we have to adjust according to where the 2637 section symbol winds up in the output section. */ 2638 if (sym != NULL && ELF_ST_TYPE (sym->st_info) == STT_SECTION) 2639 rel->r_addend += sec->output_offset; 2640 continue; 2641 } 2642 2643 if (info->relocatable && use_rel) 2644 { 2645 /* This is a relocatable link. We don't have to change 2646 anything, unless the reloc is against a section symbol, 2647 in which case we have to adjust according to where the 2648 section symbol winds up in the output section. */ 2649 if (sym == NULL || ELF_ST_TYPE (sym->st_info) != STT_SECTION) 2650 continue; 2651 2652 addend += sec->output_offset; 2653 2654 /* If partial_inplace, we need to store any additional addend 2655 back in the section. */ 2656 if (! howto->partial_inplace) 2657 continue; 2658 /* ??? Here is a nice place to call a special_function 2659 like handler. */ 2660 if (r_type != R_M32R_HI16_SLO && r_type != R_M32R_HI16_ULO) 2661 r = _bfd_relocate_contents (howto, input_bfd, 2662 addend, contents + offset); 2663 else 2664 { 2665 Elf_Internal_Rela *lorel; 2666 2667 /* We allow an arbitrary number of HI16 relocs before the 2668 LO16 reloc. This permits gcc to emit the HI and LO relocs 2669 itself. */ 2670 for (lorel = rel + 1; 2671 (lorel < relend 2672 && (ELF32_R_TYPE (lorel->r_info) == R_M32R_HI16_SLO 2673 || ELF32_R_TYPE (lorel->r_info) == R_M32R_HI16_ULO)); 2674 lorel++) 2675 continue; 2676 if (lorel < relend 2677 && ELF32_R_TYPE (lorel->r_info) == R_M32R_LO16) 2678 { 2679 m32r_elf_relocate_hi16 (input_bfd, r_type, rel, lorel, 2680 contents, addend); 2681 r = bfd_reloc_ok; 2682 } 2683 else 2684 r = _bfd_relocate_contents (howto, input_bfd, 2685 addend, contents + offset); 2686 } 2687 } 2688 else 2689 { 2690 /* Sanity check the address. */ 2691 if (offset > high_address) 2692 { 2693 r = bfd_reloc_outofrange; 2694 goto check_reloc; 2695 } 2696 2697 switch ((int) r_type) 2698 { 2699 case R_M32R_GOTOFF: 2700 /* Relocation is relative to the start of the global offset 2701 table (for ld24 rx, #uimm24). eg access at label+addend 2702 2703 ld24 rx. #label@GOTOFF + addend 2704 sub rx, r12. */ 2705 2706 BFD_ASSERT (sgot != NULL); 2707 2708 relocation = -(relocation - sgot->output_section->vma); 2709 rel->r_addend = -rel->r_addend; 2710 break; 2711 2712 case R_M32R_GOTOFF_HI_ULO: 2713 case R_M32R_GOTOFF_HI_SLO: 2714 case R_M32R_GOTOFF_LO: 2715 BFD_ASSERT (sgot != NULL); 2716 2717 relocation -= sgot->output_section->vma; 2718 2719 if ((r_type == R_M32R_GOTOFF_HI_SLO) 2720 && ((relocation + rel->r_addend) & 0x8000)) 2721 rel->r_addend += 0x10000; 2722 break; 2723 2724 case R_M32R_GOTPC24: 2725 /* .got(_GLOBAL_OFFSET_TABLE_) - pc relocation 2726 ld24 rx,#_GLOBAL_OFFSET_TABLE_ 2727 */ 2728 relocation = sgot->output_section->vma; 2729 break; 2730 2731 case R_M32R_GOTPC_HI_ULO: 2732 case R_M32R_GOTPC_HI_SLO: 2733 case R_M32R_GOTPC_LO: 2734 { 2735 /* .got(_GLOBAL_OFFSET_TABLE_) - pc relocation 2736 bl .+4 2737 seth rx,#high(_GLOBAL_OFFSET_TABLE_) 2738 or3 rx,rx,#low(_GLOBAL_OFFSET_TABLE_ +4) 2739 or 2740 bl .+4 2741 seth rx,#shigh(_GLOBAL_OFFSET_TABLE_) 2742 add3 rx,rx,#low(_GLOBAL_OFFSET_TABLE_ +4) 2743 */ 2744 relocation = sgot->output_section->vma; 2745 relocation -= (input_section->output_section->vma 2746 + input_section->output_offset 2747 + rel->r_offset); 2748 if ((r_type == R_M32R_GOTPC_HI_SLO) 2749 && ((relocation + rel->r_addend) & 0x8000)) 2750 rel->r_addend += 0x10000; 2751 2752 break; 2753 } 2754 case R_M32R_GOT16_HI_ULO: 2755 case R_M32R_GOT16_HI_SLO: 2756 case R_M32R_GOT16_LO: 2757 /* Fall through. */ 2758 case R_M32R_GOT24: 2759 /* Relocation is to the entry for this symbol in the global 2760 offset table. */ 2761 BFD_ASSERT (sgot != NULL); 2762 2763 if (h != NULL) 2764 { 2765 bfd_boolean dyn; 2766 bfd_vma off; 2767 2768 off = h->got.offset; 2769 BFD_ASSERT (off != (bfd_vma) -1); 2770 2771 dyn = htab->root.dynamic_sections_created; 2772 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h) 2773 || (info->shared 2774 && (info->symbolic 2775 || h->dynindx == -1 2776 || h->forced_local) 2777 && h->def_regular)) 2778 { 2779 /* This is actually a static link, or it is a 2780 -Bsymbolic link and the symbol is defined 2781 locally, or the symbol was forced to be local 2782 because of a version file. We must initialize 2783 this entry in the global offset table. Since the 2784 offset must always be a multiple of 4, we use the 2785 least significant bit to record whether we have 2786 initialized it already. 2787 2788 When doing a dynamic link, we create a .rela.got 2789 relocation entry to initialize the value. This 2790 is done in the finish_dynamic_symbol routine. */ 2791 if ((off & 1) != 0) 2792 off &= ~1; 2793 else 2794 { 2795 bfd_put_32 (output_bfd, relocation, 2796 sgot->contents + off); 2797 h->got.offset |= 1; 2798 } 2799 } 2800 2801 relocation = sgot->output_offset + off; 2802 } 2803 else 2804 { 2805 bfd_vma off; 2806 bfd_byte *loc; 2807 2808 BFD_ASSERT (local_got_offsets != NULL 2809 && local_got_offsets[r_symndx] != (bfd_vma) -1); 2810 2811 off = local_got_offsets[r_symndx]; 2812 2813 /* The offset must always be a multiple of 4. We use 2814 the least significant bit to record whether we have 2815 already processed this entry. */ 2816 if ((off & 1) != 0) 2817 off &= ~1; 2818 else 2819 { 2820 bfd_put_32 (output_bfd, relocation, sgot->contents + off); 2821 2822 if (info->shared) 2823 { 2824 asection *srelgot; 2825 Elf_Internal_Rela outrel; 2826 2827 /* We need to generate a R_M32R_RELATIVE reloc 2828 for the dynamic linker. */ 2829 srelgot = bfd_get_section_by_name (dynobj, ".rela.got"); 2830 BFD_ASSERT (srelgot != NULL); 2831 2832 outrel.r_offset = (sgot->output_section->vma 2833 + sgot->output_offset 2834 + off); 2835 outrel.r_info = ELF32_R_INFO (0, R_M32R_RELATIVE); 2836 outrel.r_addend = relocation; 2837 loc = srelgot->contents; 2838 loc += srelgot->reloc_count * sizeof (Elf32_External_Rela); 2839 bfd_elf32_swap_reloca_out (output_bfd, &outrel,loc); 2840 ++srelgot->reloc_count; 2841 } 2842 2843 local_got_offsets[r_symndx] |= 1; 2844 } 2845 2846 relocation = sgot->output_offset + off; 2847 } 2848 if ((r_type == R_M32R_GOT16_HI_SLO) 2849 && ((relocation + rel->r_addend) & 0x8000)) 2850 rel->r_addend += 0x10000; 2851 2852 break; 2853 2854 case R_M32R_26_PLTREL: 2855 /* Relocation is to the entry for this symbol in the 2856 procedure linkage table. */ 2857 2858 /* The native assembler will generate a 26_PLTREL reloc 2859 for a local symbol if you assemble a call from one 2860 section to another when using -K pic. */ 2861 if (h == NULL) 2862 break; 2863 2864 if (h->forced_local) 2865 break; 2866 2867 if (h->plt.offset == (bfd_vma) -1) 2868 /* We didn't make a PLT entry for this symbol. This 2869 happens when statically linking PIC code, or when 2870 using -Bsymbolic. */ 2871 break; 2872 2873 relocation = (splt->output_section->vma 2874 + splt->output_offset 2875 + h->plt.offset); 2876 break; 2877 2878 case R_M32R_HI16_SLO_RELA: 2879 if ((relocation + rel->r_addend) & 0x8000) 2880 rel->r_addend += 0x10000; 2881 /* Fall through. */ 2882 2883 case R_M32R_16_RELA: 2884 case R_M32R_24_RELA: 2885 case R_M32R_32_RELA: 2886 case R_M32R_REL32: 2887 case R_M32R_10_PCREL_RELA: 2888 case R_M32R_18_PCREL_RELA: 2889 case R_M32R_26_PCREL_RELA: 2890 case R_M32R_HI16_ULO_RELA: 2891 case R_M32R_LO16_RELA: 2892 if (info->shared 2893 && r_symndx != STN_UNDEF 2894 && (input_section->flags & SEC_ALLOC) != 0 2895 && (( r_type != R_M32R_10_PCREL_RELA 2896 && r_type != R_M32R_18_PCREL_RELA 2897 && r_type != R_M32R_26_PCREL_RELA 2898 && r_type != R_M32R_REL32) 2899 || (h != NULL 2900 && h->dynindx != -1 2901 && (! info->symbolic 2902 || !h->def_regular)))) 2903 { 2904 Elf_Internal_Rela outrel; 2905 bfd_boolean skip, relocate; 2906 bfd_byte *loc; 2907 2908 /* When generating a shared object, these relocations 2909 are copied into the output file to be resolved at run 2910 time. */ 2911 if (sreloc == NULL) 2912 { 2913 sreloc = _bfd_elf_get_dynamic_reloc_section 2914 (input_bfd, input_section, /*rela?*/ TRUE); 2915 if (sreloc == NULL) 2916 return FALSE; 2917 } 2918 2919 skip = FALSE; 2920 relocate = FALSE; 2921 2922 outrel.r_offset = _bfd_elf_section_offset (output_bfd, 2923 info, 2924 input_section, 2925 rel->r_offset); 2926 if (outrel.r_offset == (bfd_vma) -1) 2927 skip = TRUE; 2928 else if (outrel.r_offset == (bfd_vma) -2) 2929 skip = relocate = TRUE; 2930 outrel.r_offset += (input_section->output_section->vma 2931 + input_section->output_offset); 2932 2933 if (skip) 2934 memset (&outrel, 0, sizeof outrel); 2935 else if ( r_type == R_M32R_10_PCREL_RELA 2936 || r_type == R_M32R_18_PCREL_RELA 2937 || r_type == R_M32R_26_PCREL_RELA 2938 || r_type == R_M32R_REL32) 2939 { 2940 BFD_ASSERT (h != NULL && h->dynindx != -1); 2941 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type); 2942 outrel.r_addend = rel->r_addend; 2943 } 2944 else 2945 { 2946 /* h->dynindx may be -1 if this symbol was marked to 2947 become local. */ 2948 if (h == NULL 2949 || ((info->symbolic || h->dynindx == -1) 2950 && h->def_regular)) 2951 { 2952 relocate = TRUE; 2953 outrel.r_info = ELF32_R_INFO (0, R_M32R_RELATIVE); 2954 outrel.r_addend = relocation + rel->r_addend; 2955 } 2956 else 2957 { 2958 BFD_ASSERT (h->dynindx != -1); 2959 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type); 2960 outrel.r_addend = relocation + rel->r_addend; 2961 } 2962 } 2963 2964 loc = sreloc->contents; 2965 loc += sreloc->reloc_count * sizeof (Elf32_External_Rela); 2966 bfd_elf32_swap_reloca_out (output_bfd, &outrel,loc); 2967 ++sreloc->reloc_count; 2968 2969 /* If this reloc is against an external symbol, we do 2970 not want to fiddle with the addend. Otherwise, we 2971 need to include the symbol value so that it becomes 2972 an addend for the dynamic reloc. */ 2973 if (! relocate) 2974 continue; 2975 break; 2976 } 2977 else if (r_type != R_M32R_10_PCREL_RELA) 2978 break; 2979 /* Fall through. */ 2980 2981 case (int) R_M32R_10_PCREL : 2982 r = m32r_elf_do_10_pcrel_reloc (input_bfd, howto, input_section, 2983 contents, offset, 2984 sec, relocation, addend); 2985 goto check_reloc; 2986 2987 case (int) R_M32R_HI16_SLO : 2988 case (int) R_M32R_HI16_ULO : 2989 { 2990 Elf_Internal_Rela *lorel; 2991 2992 /* We allow an arbitrary number of HI16 relocs before the 2993 LO16 reloc. This permits gcc to emit the HI and LO relocs 2994 itself. */ 2995 for (lorel = rel + 1; 2996 (lorel < relend 2997 && (ELF32_R_TYPE (lorel->r_info) == R_M32R_HI16_SLO 2998 || ELF32_R_TYPE (lorel->r_info) == R_M32R_HI16_ULO)); 2999 lorel++) 3000 continue; 3001 if (lorel < relend 3002 && ELF32_R_TYPE (lorel->r_info) == R_M32R_LO16) 3003 { 3004 m32r_elf_relocate_hi16 (input_bfd, r_type, rel, lorel, 3005 contents, relocation + addend); 3006 r = bfd_reloc_ok; 3007 } 3008 else 3009 r = _bfd_final_link_relocate (howto, input_bfd, input_section, 3010 contents, offset, 3011 relocation, addend); 3012 } 3013 3014 goto check_reloc; 3015 3016 case (int) R_M32R_SDA16_RELA: 3017 case (int) R_M32R_SDA16 : 3018 { 3019 const char *name; 3020 3021 BFD_ASSERT (sec != NULL); 3022 name = bfd_get_section_name (abfd, sec); 3023 3024 if ( strcmp (name, ".sdata") == 0 3025 || strcmp (name, ".sbss") == 0 3026 || strcmp (name, ".scommon") == 0) 3027 { 3028 bfd_vma sda_base; 3029 bfd *out_bfd = sec->output_section->owner; 3030 3031 r = m32r_elf_final_sda_base (out_bfd, info, 3032 &errmsg, 3033 &sda_base); 3034 if (r != bfd_reloc_ok) 3035 { 3036 ret = FALSE; 3037 goto check_reloc; 3038 } 3039 3040 /* At this point `relocation' contains the object's 3041 address. */ 3042 relocation -= sda_base; 3043 /* Now it contains the offset from _SDA_BASE_. */ 3044 } 3045 else 3046 { 3047 (*_bfd_error_handler) 3048 (_("%B: The target (%s) of an %s relocation is in the wrong section (%A)"), 3049 input_bfd, 3050 sec, 3051 sym_name, 3052 m32r_elf_howto_table[(int) r_type].name); 3053 /*bfd_set_error (bfd_error_bad_value); ??? why? */ 3054 ret = FALSE; 3055 continue; 3056 } 3057 } 3058 /* Fall through. */ 3059 3060 default : /* OLD_M32R_RELOC */ 3061 3062 r = _bfd_final_link_relocate (howto, input_bfd, input_section, 3063 contents, offset, 3064 relocation, addend); 3065 goto check_reloc; 3066 } 3067 3068 r = _bfd_final_link_relocate (howto, input_bfd, input_section, 3069 contents, rel->r_offset, 3070 relocation, rel->r_addend); 3071 3072 } 3073 3074 check_reloc: 3075 3076 if (r != bfd_reloc_ok) 3077 { 3078 /* FIXME: This should be generic enough to go in a utility. */ 3079 const char *name; 3080 3081 if (h != NULL) 3082 name = h->root.root.string; 3083 else 3084 { 3085 name = (bfd_elf_string_from_elf_section 3086 (input_bfd, symtab_hdr->sh_link, sym->st_name)); 3087 if (name == NULL || *name == '\0') 3088 name = bfd_section_name (input_bfd, sec); 3089 } 3090 3091 if (errmsg != NULL) 3092 goto common_error; 3093 3094 switch (r) 3095 { 3096 case bfd_reloc_overflow: 3097 if (! ((*info->callbacks->reloc_overflow) 3098 (info, (h ? &h->root : NULL), name, howto->name, 3099 (bfd_vma) 0, input_bfd, input_section, offset))) 3100 return FALSE; 3101 break; 3102 3103 case bfd_reloc_undefined: 3104 if (! ((*info->callbacks->undefined_symbol) 3105 (info, name, input_bfd, input_section, 3106 offset, TRUE))) 3107 return FALSE; 3108 break; 3109 3110 case bfd_reloc_outofrange: 3111 errmsg = _("internal error: out of range error"); 3112 goto common_error; 3113 3114 case bfd_reloc_notsupported: 3115 errmsg = _("internal error: unsupported relocation error"); 3116 goto common_error; 3117 3118 case bfd_reloc_dangerous: 3119 errmsg = _("internal error: dangerous error"); 3120 goto common_error; 3121 3122 default: 3123 errmsg = _("internal error: unknown error"); 3124 /* fall through */ 3125 3126 common_error: 3127 if (!((*info->callbacks->warning) 3128 (info, errmsg, name, input_bfd, input_section, 3129 offset))) 3130 return FALSE; 3131 break; 3132 } 3133 } 3134 } 3135 3136 return ret; 3137 } 3138 3139 /* Finish up dynamic symbol handling. We set the contents of various 3140 dynamic sections here. */ 3141 3142 static bfd_boolean 3143 m32r_elf_finish_dynamic_symbol (bfd *output_bfd, 3144 struct bfd_link_info *info, 3145 struct elf_link_hash_entry *h, 3146 Elf_Internal_Sym *sym) 3147 { 3148 struct elf_m32r_link_hash_table *htab; 3149 bfd_byte *loc; 3150 3151 #ifdef DEBUG_PIC 3152 printf ("m32r_elf_finish_dynamic_symbol()\n"); 3153 #endif 3154 3155 htab = m32r_elf_hash_table (info); 3156 if (htab == NULL) 3157 return FALSE; 3158 3159 if (h->plt.offset != (bfd_vma) -1) 3160 { 3161 asection *splt; 3162 asection *sgot; 3163 asection *srela; 3164 3165 bfd_vma plt_index; 3166 bfd_vma got_offset; 3167 Elf_Internal_Rela rela; 3168 3169 /* This symbol has an entry in the procedure linkage table. Set 3170 it up. */ 3171 3172 BFD_ASSERT (h->dynindx != -1); 3173 3174 splt = htab->splt; 3175 sgot = htab->sgotplt; 3176 srela = htab->srelplt; 3177 BFD_ASSERT (splt != NULL && sgot != NULL && srela != NULL); 3178 3179 /* Get the index in the procedure linkage table which 3180 corresponds to this symbol. This is the index of this symbol 3181 in all the symbols for which we are making plt entries. The 3182 first entry in the procedure linkage table is reserved. */ 3183 plt_index = h->plt.offset / PLT_ENTRY_SIZE - 1; 3184 3185 /* Get the offset into the .got table of the entry that 3186 corresponds to this function. Each .got entry is 4 bytes. 3187 The first three are reserved. */ 3188 got_offset = (plt_index + 3) * 4; 3189 3190 /* Fill in the entry in the procedure linkage table. */ 3191 if (! info->shared) 3192 { 3193 bfd_put_32 (output_bfd, 3194 (PLT_ENTRY_WORD0b 3195 + (((sgot->output_section->vma 3196 + sgot->output_offset 3197 + got_offset) >> 16) & 0xffff)), 3198 splt->contents + h->plt.offset); 3199 bfd_put_32 (output_bfd, 3200 (PLT_ENTRY_WORD1b 3201 + ((sgot->output_section->vma 3202 + sgot->output_offset 3203 + got_offset) & 0xffff)), 3204 splt->contents + h->plt.offset + 4); 3205 bfd_put_32 (output_bfd, PLT_ENTRY_WORD2, 3206 splt->contents + h->plt.offset + 8); 3207 bfd_put_32 (output_bfd, 3208 (PLT_ENTRY_WORD3 3209 + plt_index * sizeof (Elf32_External_Rela)), 3210 splt->contents + h->plt.offset + 12); 3211 bfd_put_32 (output_bfd, 3212 (PLT_ENTRY_WORD4 3213 + (((unsigned int) ((- (h->plt.offset + 16)) >> 2)) & 0xffffff)), 3214 splt->contents + h->plt.offset + 16); 3215 } 3216 else 3217 { 3218 bfd_put_32 (output_bfd, 3219 PLT_ENTRY_WORD0 + got_offset, 3220 splt->contents + h->plt.offset); 3221 bfd_put_32 (output_bfd, PLT_ENTRY_WORD1, 3222 splt->contents + h->plt.offset + 4); 3223 bfd_put_32 (output_bfd, PLT_ENTRY_WORD2, 3224 splt->contents + h->plt.offset + 8); 3225 bfd_put_32 (output_bfd, 3226 (PLT_ENTRY_WORD3 3227 + plt_index * sizeof (Elf32_External_Rela)), 3228 splt->contents + h->plt.offset + 12); 3229 bfd_put_32 (output_bfd, 3230 (PLT_ENTRY_WORD4 3231 + (((unsigned int) ((- (h->plt.offset + 16)) >> 2)) & 0xffffff)), 3232 splt->contents + h->plt.offset + 16); 3233 } 3234 3235 /* Fill in the entry in the global offset table. */ 3236 bfd_put_32 (output_bfd, 3237 (splt->output_section->vma 3238 + splt->output_offset 3239 + h->plt.offset 3240 + 12), /* same offset */ 3241 sgot->contents + got_offset); 3242 3243 /* Fill in the entry in the .rela.plt section. */ 3244 rela.r_offset = (sgot->output_section->vma 3245 + sgot->output_offset 3246 + got_offset); 3247 rela.r_info = ELF32_R_INFO (h->dynindx, R_M32R_JMP_SLOT); 3248 rela.r_addend = 0; 3249 loc = srela->contents; 3250 loc += plt_index * sizeof (Elf32_External_Rela); 3251 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); 3252 3253 if (!h->def_regular) 3254 { 3255 /* Mark the symbol as undefined, rather than as defined in 3256 the .plt section. Leave the value alone. */ 3257 sym->st_shndx = SHN_UNDEF; 3258 } 3259 } 3260 3261 if (h->got.offset != (bfd_vma) -1) 3262 { 3263 asection *sgot; 3264 asection *srela; 3265 Elf_Internal_Rela rela; 3266 3267 /* This symbol has an entry in the global offset table. Set it 3268 up. */ 3269 3270 sgot = htab->sgot; 3271 srela = htab->srelgot; 3272 BFD_ASSERT (sgot != NULL && srela != NULL); 3273 3274 rela.r_offset = (sgot->output_section->vma 3275 + sgot->output_offset 3276 + (h->got.offset &~ 1)); 3277 3278 /* If this is a -Bsymbolic link, and the symbol is defined 3279 locally, we just want to emit a RELATIVE reloc. Likewise if 3280 the symbol was forced to be local because of a version file. 3281 The entry in the global offset table will already have been 3282 initialized in the relocate_section function. */ 3283 if (info->shared 3284 && (info->symbolic 3285 || h->dynindx == -1 3286 || h->forced_local) 3287 && h->def_regular) 3288 { 3289 rela.r_info = ELF32_R_INFO (0, R_M32R_RELATIVE); 3290 rela.r_addend = (h->root.u.def.value 3291 + h->root.u.def.section->output_section->vma 3292 + h->root.u.def.section->output_offset); 3293 } 3294 else 3295 { 3296 BFD_ASSERT ((h->got.offset & 1) == 0); 3297 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + h->got.offset); 3298 rela.r_info = ELF32_R_INFO (h->dynindx, R_M32R_GLOB_DAT); 3299 rela.r_addend = 0; 3300 } 3301 3302 loc = srela->contents; 3303 loc += srela->reloc_count * sizeof (Elf32_External_Rela); 3304 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); 3305 ++srela->reloc_count; 3306 } 3307 3308 if (h->needs_copy) 3309 { 3310 asection *s; 3311 Elf_Internal_Rela rela; 3312 3313 /* This symbols needs a copy reloc. Set it up. */ 3314 3315 BFD_ASSERT (h->dynindx != -1 3316 && (h->root.type == bfd_link_hash_defined 3317 || h->root.type == bfd_link_hash_defweak)); 3318 3319 s = bfd_get_section_by_name (h->root.u.def.section->owner, 3320 ".rela.bss"); 3321 BFD_ASSERT (s != NULL); 3322 3323 rela.r_offset = (h->root.u.def.value 3324 + h->root.u.def.section->output_section->vma 3325 + h->root.u.def.section->output_offset); 3326 rela.r_info = ELF32_R_INFO (h->dynindx, R_M32R_COPY); 3327 rela.r_addend = 0; 3328 loc = s->contents; 3329 loc += s->reloc_count * sizeof (Elf32_External_Rela); 3330 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); 3331 ++s->reloc_count; 3332 } 3333 3334 /* Mark some specially defined symbols as absolute. */ 3335 if (strcmp (h->root.root.string, "_DYNAMIC") == 0 3336 || h == htab->root.hgot) 3337 sym->st_shndx = SHN_ABS; 3338 3339 return TRUE; 3340 } 3341 3342 3343 /* Finish up the dynamic sections. */ 3344 3345 static bfd_boolean 3346 m32r_elf_finish_dynamic_sections (bfd *output_bfd, 3347 struct bfd_link_info *info) 3348 { 3349 struct elf_m32r_link_hash_table *htab; 3350 bfd *dynobj; 3351 asection *sdyn; 3352 asection *sgot; 3353 3354 #ifdef DEBUG_PIC 3355 printf ("m32r_elf_finish_dynamic_sections()\n"); 3356 #endif 3357 3358 htab = m32r_elf_hash_table (info); 3359 if (htab == NULL) 3360 return FALSE; 3361 3362 dynobj = htab->root.dynobj; 3363 3364 sgot = htab->sgotplt; 3365 sdyn = bfd_get_section_by_name (dynobj, ".dynamic"); 3366 3367 if (htab->root.dynamic_sections_created) 3368 { 3369 asection *splt; 3370 Elf32_External_Dyn *dyncon, *dynconend; 3371 3372 BFD_ASSERT (sgot != NULL && sdyn != NULL); 3373 3374 dyncon = (Elf32_External_Dyn *) sdyn->contents; 3375 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size); 3376 3377 for (; dyncon < dynconend; dyncon++) 3378 { 3379 Elf_Internal_Dyn dyn; 3380 asection *s; 3381 3382 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn); 3383 3384 switch (dyn.d_tag) 3385 { 3386 default: 3387 break; 3388 3389 case DT_PLTGOT: 3390 s = htab->sgot->output_section; 3391 goto get_vma; 3392 case DT_JMPREL: 3393 s = htab->srelplt->output_section; 3394 get_vma: 3395 BFD_ASSERT (s != NULL); 3396 dyn.d_un.d_ptr = s->vma; 3397 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); 3398 break; 3399 3400 case DT_PLTRELSZ: 3401 s = htab->srelplt->output_section; 3402 BFD_ASSERT (s != NULL); 3403 dyn.d_un.d_val = s->size; 3404 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); 3405 break; 3406 3407 case DT_RELASZ: 3408 /* My reading of the SVR4 ABI indicates that the 3409 procedure linkage table relocs (DT_JMPREL) should be 3410 included in the overall relocs (DT_RELA). This is 3411 what Solaris does. However, UnixWare can not handle 3412 that case. Therefore, we override the DT_RELASZ entry 3413 here to make it not include the JMPREL relocs. Since 3414 the linker script arranges for .rela.plt to follow all 3415 other relocation sections, we don't have to worry 3416 about changing the DT_RELA entry. */ 3417 if (htab->srelplt != NULL) 3418 { 3419 s = htab->srelplt->output_section; 3420 dyn.d_un.d_val -= s->size; 3421 } 3422 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); 3423 break; 3424 } 3425 } 3426 3427 /* Fill in the first entry in the procedure linkage table. */ 3428 splt = htab->splt; 3429 if (splt && splt->size > 0) 3430 { 3431 if (info->shared) 3432 { 3433 bfd_put_32 (output_bfd, PLT0_PIC_ENTRY_WORD0, splt->contents); 3434 bfd_put_32 (output_bfd, PLT0_PIC_ENTRY_WORD1, splt->contents + 4); 3435 bfd_put_32 (output_bfd, PLT0_PIC_ENTRY_WORD2, splt->contents + 8); 3436 bfd_put_32 (output_bfd, PLT0_PIC_ENTRY_WORD3, splt->contents + 12); 3437 bfd_put_32 (output_bfd, PLT0_PIC_ENTRY_WORD4, splt->contents + 16); 3438 } 3439 else 3440 { 3441 unsigned long addr; 3442 /* addr = .got + 4 */ 3443 addr = sgot->output_section->vma + sgot->output_offset + 4; 3444 bfd_put_32 (output_bfd, 3445 PLT0_ENTRY_WORD0 | ((addr >> 16) & 0xffff), 3446 splt->contents); 3447 bfd_put_32 (output_bfd, 3448 PLT0_ENTRY_WORD1 | (addr & 0xffff), 3449 splt->contents + 4); 3450 bfd_put_32 (output_bfd, PLT0_ENTRY_WORD2, splt->contents + 8); 3451 bfd_put_32 (output_bfd, PLT0_ENTRY_WORD3, splt->contents + 12); 3452 bfd_put_32 (output_bfd, PLT0_ENTRY_WORD4, splt->contents + 16); 3453 } 3454 3455 elf_section_data (splt->output_section)->this_hdr.sh_entsize = 3456 PLT_ENTRY_SIZE; 3457 } 3458 } 3459 3460 /* Fill in the first three entries in the global offset table. */ 3461 if (sgot && sgot->size > 0) 3462 { 3463 if (sdyn == NULL) 3464 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents); 3465 else 3466 bfd_put_32 (output_bfd, 3467 sdyn->output_section->vma + sdyn->output_offset, 3468 sgot->contents); 3469 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 4); 3470 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 8); 3471 3472 elf_section_data (sgot->output_section)->this_hdr.sh_entsize = 4; 3473 } 3474 3475 return TRUE; 3476 } 3477 3478 3479 /* Set the right machine number. */ 3480 3481 static bfd_boolean 3482 m32r_elf_object_p (bfd *abfd) 3483 { 3484 switch (elf_elfheader (abfd)->e_flags & EF_M32R_ARCH) 3485 { 3486 default: 3487 case E_M32R_ARCH: (void) bfd_default_set_arch_mach (abfd, bfd_arch_m32r, bfd_mach_m32r); break; 3488 case E_M32RX_ARCH: (void) bfd_default_set_arch_mach (abfd, bfd_arch_m32r, bfd_mach_m32rx); break; 3489 case E_M32R2_ARCH: (void) bfd_default_set_arch_mach (abfd, bfd_arch_m32r, bfd_mach_m32r2); break; 3490 } 3491 return TRUE; 3492 } 3493 3494 /* Store the machine number in the flags field. */ 3495 3496 static void 3497 m32r_elf_final_write_processing (bfd *abfd, 3498 bfd_boolean linker ATTRIBUTE_UNUSED) 3499 { 3500 unsigned long val; 3501 3502 switch (bfd_get_mach (abfd)) 3503 { 3504 default: 3505 case bfd_mach_m32r: val = E_M32R_ARCH; break; 3506 case bfd_mach_m32rx: val = E_M32RX_ARCH; break; 3507 case bfd_mach_m32r2: val = E_M32R2_ARCH; break; 3508 } 3509 3510 elf_elfheader (abfd)->e_flags &=~ EF_M32R_ARCH; 3511 elf_elfheader (abfd)->e_flags |= val; 3512 } 3513 3514 /* Function to keep M32R specific file flags. */ 3515 3516 static bfd_boolean 3517 m32r_elf_set_private_flags (bfd *abfd, flagword flags) 3518 { 3519 BFD_ASSERT (!elf_flags_init (abfd) 3520 || elf_elfheader (abfd)->e_flags == flags); 3521 3522 elf_elfheader (abfd)->e_flags = flags; 3523 elf_flags_init (abfd) = TRUE; 3524 return TRUE; 3525 } 3526 3527 /* Merge backend specific data from an object file to the output 3528 object file when linking. */ 3529 3530 static bfd_boolean 3531 m32r_elf_merge_private_bfd_data (bfd *ibfd, bfd *obfd) 3532 { 3533 flagword out_flags; 3534 flagword in_flags; 3535 3536 if ( bfd_get_flavour (ibfd) != bfd_target_elf_flavour 3537 || bfd_get_flavour (obfd) != bfd_target_elf_flavour) 3538 return TRUE; 3539 3540 in_flags = elf_elfheader (ibfd)->e_flags; 3541 out_flags = elf_elfheader (obfd)->e_flags; 3542 3543 if (! elf_flags_init (obfd)) 3544 { 3545 /* If the input is the default architecture then do not 3546 bother setting the flags for the output architecture, 3547 instead allow future merges to do this. If no future 3548 merges ever set these flags then they will retain their 3549 unitialised values, which surprise surprise, correspond 3550 to the default values. */ 3551 if (bfd_get_arch_info (ibfd)->the_default) 3552 return TRUE; 3553 3554 elf_flags_init (obfd) = TRUE; 3555 elf_elfheader (obfd)->e_flags = in_flags; 3556 3557 if (bfd_get_arch (obfd) == bfd_get_arch (ibfd) 3558 && bfd_get_arch_info (obfd)->the_default) 3559 return bfd_set_arch_mach (obfd, bfd_get_arch (ibfd), 3560 bfd_get_mach (ibfd)); 3561 3562 return TRUE; 3563 } 3564 3565 /* Check flag compatibility. */ 3566 if (in_flags == out_flags) 3567 return TRUE; 3568 3569 if ((in_flags & EF_M32R_ARCH) != (out_flags & EF_M32R_ARCH)) 3570 { 3571 if ( ((in_flags & EF_M32R_ARCH) != E_M32R_ARCH) 3572 || ((out_flags & EF_M32R_ARCH) == E_M32R_ARCH) 3573 || ((in_flags & EF_M32R_ARCH) == E_M32R2_ARCH)) 3574 { 3575 (*_bfd_error_handler) 3576 (_("%B: Instruction set mismatch with previous modules"), ibfd); 3577 3578 bfd_set_error (bfd_error_bad_value); 3579 return FALSE; 3580 } 3581 } 3582 3583 return TRUE; 3584 } 3585 3586 /* Display the flags field. */ 3587 3588 static bfd_boolean 3589 m32r_elf_print_private_bfd_data (bfd *abfd, void * ptr) 3590 { 3591 FILE * file = (FILE *) ptr; 3592 3593 BFD_ASSERT (abfd != NULL && ptr != NULL); 3594 3595 _bfd_elf_print_private_bfd_data (abfd, ptr); 3596 3597 fprintf (file, _("private flags = %lx"), elf_elfheader (abfd)->e_flags); 3598 3599 switch (elf_elfheader (abfd)->e_flags & EF_M32R_ARCH) 3600 { 3601 default: 3602 case E_M32R_ARCH: fprintf (file, _(": m32r instructions")); break; 3603 case E_M32RX_ARCH: fprintf (file, _(": m32rx instructions")); break; 3604 case E_M32R2_ARCH: fprintf (file, _(": m32r2 instructions")); break; 3605 } 3606 3607 fputc ('\n', file); 3608 3609 return TRUE; 3610 } 3611 3612 static asection * 3613 m32r_elf_gc_mark_hook (asection *sec, 3614 struct bfd_link_info *info, 3615 Elf_Internal_Rela *rel, 3616 struct elf_link_hash_entry *h, 3617 Elf_Internal_Sym *sym) 3618 { 3619 if (h != NULL) 3620 switch (ELF32_R_TYPE (rel->r_info)) 3621 { 3622 case R_M32R_GNU_VTINHERIT: 3623 case R_M32R_GNU_VTENTRY: 3624 case R_M32R_RELA_GNU_VTINHERIT: 3625 case R_M32R_RELA_GNU_VTENTRY: 3626 return NULL; 3627 } 3628 3629 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym); 3630 } 3631 3632 static bfd_boolean 3633 m32r_elf_gc_sweep_hook (bfd *abfd ATTRIBUTE_UNUSED, 3634 struct bfd_link_info *info ATTRIBUTE_UNUSED, 3635 asection *sec ATTRIBUTE_UNUSED, 3636 const Elf_Internal_Rela *relocs ATTRIBUTE_UNUSED) 3637 { 3638 /* Update the got entry reference counts for the section being removed. */ 3639 Elf_Internal_Shdr *symtab_hdr; 3640 struct elf_link_hash_entry **sym_hashes; 3641 bfd_signed_vma *local_got_refcounts; 3642 const Elf_Internal_Rela *rel, *relend; 3643 3644 if (info->relocatable) 3645 return TRUE; 3646 3647 elf_section_data (sec)->local_dynrel = NULL; 3648 3649 symtab_hdr = &elf_tdata (abfd)->symtab_hdr; 3650 sym_hashes = elf_sym_hashes (abfd); 3651 local_got_refcounts = elf_local_got_refcounts (abfd); 3652 3653 relend = relocs + sec->reloc_count; 3654 for (rel = relocs; rel < relend; rel++) 3655 { 3656 unsigned long r_symndx; 3657 struct elf_link_hash_entry *h = NULL; 3658 3659 r_symndx = ELF32_R_SYM (rel->r_info); 3660 if (r_symndx >= symtab_hdr->sh_info) 3661 { 3662 h = sym_hashes[r_symndx - symtab_hdr->sh_info]; 3663 while (h->root.type == bfd_link_hash_indirect 3664 || h->root.type == bfd_link_hash_warning) 3665 h = (struct elf_link_hash_entry *) h->root.u.i.link; 3666 } 3667 3668 switch (ELF32_R_TYPE (rel->r_info)) 3669 { 3670 case R_M32R_GOT16_HI_ULO: 3671 case R_M32R_GOT16_HI_SLO: 3672 case R_M32R_GOT16_LO: 3673 case R_M32R_GOTOFF: 3674 case R_M32R_GOTOFF_HI_ULO: 3675 case R_M32R_GOTOFF_HI_SLO: 3676 case R_M32R_GOTOFF_LO: 3677 case R_M32R_GOT24: 3678 case R_M32R_GOTPC_HI_ULO: 3679 case R_M32R_GOTPC_HI_SLO: 3680 case R_M32R_GOTPC_LO: 3681 case R_M32R_GOTPC24: 3682 if (h != NULL) 3683 { 3684 if (h->got.refcount > 0) 3685 h->got.refcount--; 3686 } 3687 else 3688 { 3689 if (local_got_refcounts && local_got_refcounts[r_symndx] > 0) 3690 local_got_refcounts[r_symndx]--; 3691 } 3692 break; 3693 3694 case R_M32R_16_RELA: 3695 case R_M32R_24_RELA: 3696 case R_M32R_32_RELA: 3697 case R_M32R_REL32: 3698 case R_M32R_HI16_ULO_RELA: 3699 case R_M32R_HI16_SLO_RELA: 3700 case R_M32R_LO16_RELA: 3701 case R_M32R_SDA16_RELA: 3702 case R_M32R_10_PCREL_RELA: 3703 case R_M32R_18_PCREL_RELA: 3704 case R_M32R_26_PCREL_RELA: 3705 if (h != NULL) 3706 { 3707 struct elf_m32r_link_hash_entry *eh; 3708 struct elf_m32r_dyn_relocs **pp; 3709 struct elf_m32r_dyn_relocs *p; 3710 3711 if (!info->shared && h->plt.refcount > 0) 3712 h->plt.refcount -= 1; 3713 3714 eh = (struct elf_m32r_link_hash_entry *) h; 3715 3716 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next) 3717 if (p->sec == sec) 3718 { 3719 if ( ELF32_R_TYPE (rel->r_info) == R_M32R_26_PCREL_RELA 3720 || ELF32_R_TYPE (rel->r_info) == R_M32R_18_PCREL_RELA 3721 || ELF32_R_TYPE (rel->r_info) == R_M32R_10_PCREL_RELA 3722 || ELF32_R_TYPE (rel->r_info) == R_M32R_REL32) 3723 p->pc_count -= 1; 3724 p->count -= 1; 3725 if (p->count == 0) 3726 *pp = p->next; 3727 break; 3728 } 3729 } 3730 break; 3731 3732 case R_M32R_26_PLTREL: 3733 if (h != NULL) 3734 { 3735 if (h->plt.refcount > 0) 3736 h->plt.refcount--; 3737 } 3738 break; 3739 3740 default: 3741 break; 3742 } 3743 } 3744 3745 return TRUE; 3746 } 3747 3748 /* Look through the relocs for a section during the first phase. 3749 Since we don't do .gots or .plts, we just need to consider the 3750 virtual table relocs for gc. */ 3751 3752 static bfd_boolean 3753 m32r_elf_check_relocs (bfd *abfd, 3754 struct bfd_link_info *info, 3755 asection *sec, 3756 const Elf_Internal_Rela *relocs) 3757 { 3758 Elf_Internal_Shdr *symtab_hdr; 3759 struct elf_link_hash_entry **sym_hashes; 3760 const Elf_Internal_Rela *rel; 3761 const Elf_Internal_Rela *rel_end; 3762 struct elf_m32r_link_hash_table *htab; 3763 bfd *dynobj; 3764 asection *sreloc; 3765 3766 if (info->relocatable) 3767 return TRUE; 3768 3769 sreloc = NULL; 3770 symtab_hdr = &elf_tdata (abfd)->symtab_hdr; 3771 sym_hashes = elf_sym_hashes (abfd); 3772 3773 htab = m32r_elf_hash_table (info); 3774 if (htab == NULL) 3775 return FALSE; 3776 3777 dynobj = htab->root.dynobj; 3778 3779 rel_end = relocs + sec->reloc_count; 3780 for (rel = relocs; rel < rel_end; rel++) 3781 { 3782 int r_type; 3783 struct elf_link_hash_entry *h; 3784 unsigned long r_symndx; 3785 3786 r_symndx = ELF32_R_SYM (rel->r_info); 3787 r_type = ELF32_R_TYPE (rel->r_info); 3788 if (r_symndx < symtab_hdr->sh_info) 3789 h = NULL; 3790 else 3791 { 3792 h = sym_hashes[r_symndx - symtab_hdr->sh_info]; 3793 while (h->root.type == bfd_link_hash_indirect 3794 || h->root.type == bfd_link_hash_warning) 3795 h = (struct elf_link_hash_entry *) h->root.u.i.link; 3796 } 3797 3798 /* Some relocs require a global offset table. */ 3799 if (htab->sgot == NULL) 3800 { 3801 switch (r_type) 3802 { 3803 case R_M32R_GOT16_HI_ULO: 3804 case R_M32R_GOT16_HI_SLO: 3805 case R_M32R_GOTOFF: 3806 case R_M32R_GOTOFF_HI_ULO: 3807 case R_M32R_GOTOFF_HI_SLO: 3808 case R_M32R_GOTOFF_LO: 3809 case R_M32R_GOT16_LO: 3810 case R_M32R_GOTPC24: 3811 case R_M32R_GOTPC_HI_ULO: 3812 case R_M32R_GOTPC_HI_SLO: 3813 case R_M32R_GOTPC_LO: 3814 case R_M32R_GOT24: 3815 if (dynobj == NULL) 3816 htab->root.dynobj = dynobj = abfd; 3817 if (! create_got_section (dynobj, info)) 3818 return FALSE; 3819 break; 3820 3821 default: 3822 break; 3823 } 3824 } 3825 3826 switch (r_type) 3827 { 3828 case R_M32R_GOT16_HI_ULO: 3829 case R_M32R_GOT16_HI_SLO: 3830 case R_M32R_GOT16_LO: 3831 case R_M32R_GOT24: 3832 3833 if (h != NULL) 3834 h->got.refcount += 1; 3835 else 3836 { 3837 bfd_signed_vma *local_got_refcounts; 3838 3839 /* This is a global offset table entry for a local 3840 symbol. */ 3841 local_got_refcounts = elf_local_got_refcounts (abfd); 3842 if (local_got_refcounts == NULL) 3843 { 3844 bfd_size_type size; 3845 3846 size = symtab_hdr->sh_info; 3847 size *= sizeof (bfd_signed_vma); 3848 local_got_refcounts = bfd_zalloc (abfd, size); 3849 if (local_got_refcounts == NULL) 3850 return FALSE; 3851 elf_local_got_refcounts (abfd) = local_got_refcounts; 3852 } 3853 local_got_refcounts[r_symndx] += 1; 3854 } 3855 break; 3856 3857 case R_M32R_26_PLTREL: 3858 /* This symbol requires a procedure linkage table entry. We 3859 actually build the entry in adjust_dynamic_symbol, 3860 because this might be a case of linking PIC code without 3861 linking in any dynamic objects, in which case we don't 3862 need to generate a procedure linkage table after all. */ 3863 3864 /* If this is a local symbol, we resolve it directly without 3865 creating a procedure linkage table entry. */ 3866 if (h == NULL) 3867 continue; 3868 3869 if (h->forced_local) 3870 break; 3871 3872 h->needs_plt = 1; 3873 h->plt.refcount += 1; 3874 break; 3875 3876 case R_M32R_16_RELA: 3877 case R_M32R_24_RELA: 3878 case R_M32R_32_RELA: 3879 case R_M32R_REL32: 3880 case R_M32R_HI16_ULO_RELA: 3881 case R_M32R_HI16_SLO_RELA: 3882 case R_M32R_LO16_RELA: 3883 case R_M32R_SDA16_RELA: 3884 case R_M32R_10_PCREL_RELA: 3885 case R_M32R_18_PCREL_RELA: 3886 case R_M32R_26_PCREL_RELA: 3887 3888 if (h != NULL && !info->shared) 3889 { 3890 h->non_got_ref = 1; 3891 h->plt.refcount += 1; 3892 } 3893 3894 /* If we are creating a shared library, and this is a reloc 3895 against a global symbol, or a non PC relative reloc 3896 against a local symbol, then we need to copy the reloc 3897 into the shared library. However, if we are linking with 3898 -Bsymbolic, we do not need to copy a reloc against a 3899 global symbol which is defined in an object we are 3900 including in the link (i.e., DEF_REGULAR is set). At 3901 this point we have not seen all the input files, so it is 3902 possible that DEF_REGULAR is not set now but will be set 3903 later (it is never cleared). We account for that 3904 possibility below by storing information in the 3905 dyn_relocs field of the hash table entry. A similar 3906 situation occurs when creating shared libraries and symbol 3907 visibility changes render the symbol local. 3908 3909 If on the other hand, we are creating an executable, we 3910 may need to keep relocations for symbols satisfied by a 3911 dynamic library if we manage to avoid copy relocs for the 3912 symbol. */ 3913 if ((info->shared 3914 && (sec->flags & SEC_ALLOC) != 0 3915 && (( r_type != R_M32R_26_PCREL_RELA 3916 && r_type != R_M32R_18_PCREL_RELA 3917 && r_type != R_M32R_10_PCREL_RELA 3918 && r_type != R_M32R_REL32) 3919 || (h != NULL 3920 && (! info->symbolic 3921 || h->root.type == bfd_link_hash_defweak 3922 || !h->def_regular)))) 3923 || (!info->shared 3924 && (sec->flags & SEC_ALLOC) != 0 3925 && h != NULL 3926 && (h->root.type == bfd_link_hash_defweak 3927 || !h->def_regular))) 3928 { 3929 struct elf_m32r_dyn_relocs *p; 3930 struct elf_m32r_dyn_relocs **head; 3931 3932 if (dynobj == NULL) 3933 htab->root.dynobj = dynobj = abfd; 3934 3935 /* When creating a shared object, we must copy these 3936 relocs into the output file. We create a reloc 3937 section in dynobj and make room for the reloc. */ 3938 if (sreloc == NULL) 3939 { 3940 sreloc = _bfd_elf_make_dynamic_reloc_section 3941 (sec, dynobj, 2, abfd, /*rela?*/ TRUE); 3942 3943 if (sreloc == NULL) 3944 return FALSE; 3945 } 3946 3947 /* If this is a global symbol, we count the number of 3948 relocations we need for this symbol. */ 3949 if (h != NULL) 3950 head = &((struct elf_m32r_link_hash_entry *) h)->dyn_relocs; 3951 else 3952 { 3953 /* Track dynamic relocs needed for local syms too. */ 3954 asection *s; 3955 void *vpp; 3956 Elf_Internal_Sym *isym; 3957 3958 isym = bfd_sym_from_r_symndx (&htab->sym_cache, 3959 abfd, r_symndx); 3960 if (isym == NULL) 3961 return FALSE; 3962 3963 s = bfd_section_from_elf_index (abfd, isym->st_shndx); 3964 if (s == NULL) 3965 s = sec; 3966 3967 vpp = &elf_section_data (s)->local_dynrel; 3968 head = (struct elf_m32r_dyn_relocs **) vpp; 3969 } 3970 3971 p = *head; 3972 if (p == NULL || p->sec != sec) 3973 { 3974 bfd_size_type amt = sizeof (*p); 3975 3976 p = bfd_alloc (dynobj, amt); 3977 if (p == NULL) 3978 return FALSE; 3979 p->next = *head; 3980 *head = p; 3981 p->sec = sec; 3982 p->count = 0; 3983 p->pc_count = 0; 3984 } 3985 3986 p->count += 1; 3987 if ( ELF32_R_TYPE (rel->r_info) == R_M32R_26_PCREL_RELA 3988 || ELF32_R_TYPE (rel->r_info) == R_M32R_18_PCREL_RELA 3989 || ELF32_R_TYPE (rel->r_info) == R_M32R_10_PCREL_RELA 3990 || ELF32_R_TYPE (rel->r_info) == R_M32R_REL32) 3991 p->pc_count += 1; 3992 } 3993 break; 3994 3995 /* This relocation describes the C++ object vtable hierarchy. 3996 Reconstruct it for later use during GC. */ 3997 case R_M32R_RELA_GNU_VTINHERIT: 3998 case R_M32R_GNU_VTINHERIT: 3999 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset)) 4000 return FALSE; 4001 break; 4002 4003 /* This relocation describes which C++ vtable entries are actually 4004 used. Record for later use during GC. */ 4005 case R_M32R_GNU_VTENTRY: 4006 BFD_ASSERT (h != NULL); 4007 if (h != NULL 4008 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_offset)) 4009 return FALSE; 4010 break; 4011 case R_M32R_RELA_GNU_VTENTRY: 4012 BFD_ASSERT (h != NULL); 4013 if (h != NULL 4014 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend)) 4015 return FALSE; 4016 break; 4017 } 4018 } 4019 4020 return TRUE; 4021 } 4022 4023 static const struct bfd_elf_special_section m32r_elf_special_sections[] = 4024 { 4025 { STRING_COMMA_LEN (".sbss"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE }, 4026 { STRING_COMMA_LEN (".sdata"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, 4027 { NULL, 0, 0, 0, 0 } 4028 }; 4029 4030 static enum elf_reloc_type_class 4031 m32r_elf_reloc_type_class (const Elf_Internal_Rela *rela) 4032 { 4033 switch ((int) ELF32_R_TYPE (rela->r_info)) 4034 { 4035 case R_M32R_RELATIVE: return reloc_class_relative; 4036 case R_M32R_JMP_SLOT: return reloc_class_plt; 4037 case R_M32R_COPY: return reloc_class_copy; 4038 default: return reloc_class_normal; 4039 } 4040 } 4041 4042 #define ELF_ARCH bfd_arch_m32r 4043 #define ELF_TARGET_ID M32R_ELF_DATA 4044 #define ELF_MACHINE_CODE EM_M32R 4045 #define ELF_MACHINE_ALT1 EM_CYGNUS_M32R 4046 #define ELF_MAXPAGESIZE 0x1 /* Explicitly requested by Mitsubishi. */ 4047 4048 #define TARGET_BIG_SYM bfd_elf32_m32r_vec 4049 #define TARGET_BIG_NAME "elf32-m32r" 4050 #define TARGET_LITTLE_SYM bfd_elf32_m32rle_vec 4051 #define TARGET_LITTLE_NAME "elf32-m32rle" 4052 4053 #define elf_info_to_howto m32r_info_to_howto 4054 #define elf_info_to_howto_rel m32r_info_to_howto_rel 4055 #define elf_backend_section_from_bfd_section _bfd_m32r_elf_section_from_bfd_section 4056 #define elf_backend_symbol_processing _bfd_m32r_elf_symbol_processing 4057 #define elf_backend_add_symbol_hook m32r_elf_add_symbol_hook 4058 #define elf_backend_relocate_section m32r_elf_relocate_section 4059 #define elf_backend_gc_mark_hook m32r_elf_gc_mark_hook 4060 #define elf_backend_gc_sweep_hook m32r_elf_gc_sweep_hook 4061 #define elf_backend_check_relocs m32r_elf_check_relocs 4062 4063 #define elf_backend_create_dynamic_sections m32r_elf_create_dynamic_sections 4064 #define bfd_elf32_bfd_link_hash_table_create m32r_elf_link_hash_table_create 4065 #define elf_backend_size_dynamic_sections m32r_elf_size_dynamic_sections 4066 #define elf_backend_omit_section_dynsym \ 4067 ((bfd_boolean (*) (bfd *, struct bfd_link_info *, asection *)) bfd_true) 4068 #define elf_backend_finish_dynamic_sections m32r_elf_finish_dynamic_sections 4069 #define elf_backend_adjust_dynamic_symbol m32r_elf_adjust_dynamic_symbol 4070 #define elf_backend_finish_dynamic_symbol m32r_elf_finish_dynamic_symbol 4071 #define elf_backend_reloc_type_class m32r_elf_reloc_type_class 4072 #define elf_backend_copy_indirect_symbol m32r_elf_copy_indirect_symbol 4073 4074 #define elf_backend_can_gc_sections 1 4075 /*#if !USE_REL 4076 #define elf_backend_rela_normal 1 4077 #endif*/ 4078 #define elf_backend_can_refcount 1 4079 #define elf_backend_want_got_plt 1 4080 #define elf_backend_plt_readonly 1 4081 #define elf_backend_want_plt_sym 0 4082 #define elf_backend_got_header_size 12 4083 4084 #define elf_backend_may_use_rel_p 1 4085 #ifdef USE_M32R_OLD_RELOC 4086 #define elf_backend_default_use_rela_p 0 4087 #define elf_backend_may_use_rela_p 0 4088 #else 4089 #define elf_backend_default_use_rela_p 1 4090 #define elf_backend_may_use_rela_p 1 4091 #endif 4092 4093 #define elf_backend_object_p m32r_elf_object_p 4094 #define elf_backend_final_write_processing m32r_elf_final_write_processing 4095 #define bfd_elf32_bfd_merge_private_bfd_data m32r_elf_merge_private_bfd_data 4096 #define bfd_elf32_bfd_set_private_flags m32r_elf_set_private_flags 4097 #define bfd_elf32_bfd_print_private_bfd_data m32r_elf_print_private_bfd_data 4098 #define elf_backend_special_sections m32r_elf_special_sections 4099 4100 #include "elf32-target.h" 4101 4102 #undef ELF_MAXPAGESIZE 4103 #define ELF_MAXPAGESIZE 0x1000 4104 4105 #undef TARGET_BIG_SYM 4106 #define TARGET_BIG_SYM bfd_elf32_m32rlin_vec 4107 #undef TARGET_BIG_NAME 4108 #define TARGET_BIG_NAME "elf32-m32r-linux" 4109 #undef TARGET_LITTLE_SYM 4110 #define TARGET_LITTLE_SYM bfd_elf32_m32rlelin_vec 4111 #undef TARGET_LITTLE_NAME 4112 #define TARGET_LITTLE_NAME "elf32-m32rle-linux" 4113 #undef elf32_bed 4114 #define elf32_bed elf32_m32r_lin_bed 4115 4116 #include "elf32-target.h" 4117 4118