1/* BFD back-end for HP PA-RISC ELF files. 2 Copyright (C) 1990-2017 Free Software Foundation, Inc. 3 4 Original code by 5 Center for Software Science 6 Department of Computer Science 7 University of Utah 8 Largely rewritten by Alan Modra <alan@linuxcare.com.au> 9 Naming cleanup by Carlos O'Donell <carlos@systemhalted.org> 10 TLS support written by Randolph Chung <tausq@debian.org> 11 12 This file is part of BFD, the Binary File Descriptor library. 13 14 This program is free software; you can redistribute it and/or modify 15 it under the terms of the GNU General Public License as published by 16 the Free Software Foundation; either version 3 of the License, or 17 (at your option) any later version. 18 19 This program is distributed in the hope that it will be useful, 20 but WITHOUT ANY WARRANTY; without even the implied warranty of 21 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 22 GNU General Public License for more details. 23 24 You should have received a copy of the GNU General Public License 25 along with this program; if not, write to the Free Software 26 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, 27 MA 02110-1301, USA. */ 28 29#include "sysdep.h" 30#include "bfd.h" 31#include "libbfd.h" 32#include "elf-bfd.h" 33#include "elf/hppa.h" 34#include "libhppa.h" 35#include "elf32-hppa.h" 36#define ARCH_SIZE 32 37#include "elf32-hppa.h" 38#include "elf-hppa.h" 39 40/* In order to gain some understanding of code in this file without 41 knowing all the intricate details of the linker, note the 42 following: 43 44 Functions named elf32_hppa_* are called by external routines, other 45 functions are only called locally. elf32_hppa_* functions appear 46 in this file more or less in the order in which they are called 47 from external routines. eg. elf32_hppa_check_relocs is called 48 early in the link process, elf32_hppa_finish_dynamic_sections is 49 one of the last functions. */ 50 51/* We use two hash tables to hold information for linking PA ELF objects. 52 53 The first is the elf32_hppa_link_hash_table which is derived 54 from the standard ELF linker hash table. We use this as a place to 55 attach other hash tables and static information. 56 57 The second is the stub hash table which is derived from the 58 base BFD hash table. The stub hash table holds the information 59 necessary to build the linker stubs during a link. 60 61 There are a number of different stubs generated by the linker. 62 63 Long branch stub: 64 : ldil LR'X,%r1 65 : be,n RR'X(%sr4,%r1) 66 67 PIC long branch stub: 68 : b,l .+8,%r1 69 : addil LR'X - ($PIC_pcrel$0 - 4),%r1 70 : be,n RR'X - ($PIC_pcrel$0 - 8)(%sr4,%r1) 71 72 Import stub to call shared library routine from normal object file 73 (single sub-space version) 74 : addil LR'lt_ptr+ltoff,%dp ; get procedure entry point 75 : ldw RR'lt_ptr+ltoff(%r1),%r21 76 : bv %r0(%r21) 77 : ldw RR'lt_ptr+ltoff+4(%r1),%r19 ; get new dlt value. 78 79 Import stub to call shared library routine from shared library 80 (single sub-space version) 81 : addil LR'ltoff,%r19 ; get procedure entry point 82 : ldw RR'ltoff(%r1),%r21 83 : bv %r0(%r21) 84 : ldw RR'ltoff+4(%r1),%r19 ; get new dlt value. 85 86 Import stub to call shared library routine from normal object file 87 (multiple sub-space support) 88 : addil LR'lt_ptr+ltoff,%dp ; get procedure entry point 89 : ldw RR'lt_ptr+ltoff(%r1),%r21 90 : ldw RR'lt_ptr+ltoff+4(%r1),%r19 ; get new dlt value. 91 : ldsid (%r21),%r1 92 : mtsp %r1,%sr0 93 : be 0(%sr0,%r21) ; branch to target 94 : stw %rp,-24(%sp) ; save rp 95 96 Import stub to call shared library routine from shared library 97 (multiple sub-space support) 98 : addil LR'ltoff,%r19 ; get procedure entry point 99 : ldw RR'ltoff(%r1),%r21 100 : ldw RR'ltoff+4(%r1),%r19 ; get new dlt value. 101 : ldsid (%r21),%r1 102 : mtsp %r1,%sr0 103 : be 0(%sr0,%r21) ; branch to target 104 : stw %rp,-24(%sp) ; save rp 105 106 Export stub to return from shared lib routine (multiple sub-space support) 107 One of these is created for each exported procedure in a shared 108 library (and stored in the shared lib). Shared lib routines are 109 called via the first instruction in the export stub so that we can 110 do an inter-space return. Not required for single sub-space. 111 : bl,n X,%rp ; trap the return 112 : nop 113 : ldw -24(%sp),%rp ; restore the original rp 114 : ldsid (%rp),%r1 115 : mtsp %r1,%sr0 116 : be,n 0(%sr0,%rp) ; inter-space return. */ 117 118 119/* Variable names follow a coding style. 120 Please follow this (Apps Hungarian) style: 121 122 Structure/Variable Prefix 123 elf_link_hash_table "etab" 124 elf_link_hash_entry "eh" 125 126 elf32_hppa_link_hash_table "htab" 127 elf32_hppa_link_hash_entry "hh" 128 129 bfd_hash_table "btab" 130 bfd_hash_entry "bh" 131 132 bfd_hash_table containing stubs "bstab" 133 elf32_hppa_stub_hash_entry "hsh" 134 135 elf32_hppa_dyn_reloc_entry "hdh" 136 137 Always remember to use GNU Coding Style. */ 138 139#define PLT_ENTRY_SIZE 8 140#define GOT_ENTRY_SIZE 4 141#define ELF_DYNAMIC_INTERPRETER "/lib/ld.so.1" 142 143static const bfd_byte plt_stub[] = 144{ 145 0x0e, 0x80, 0x10, 0x96, /* 1: ldw 0(%r20),%r22 */ 146 0xea, 0xc0, 0xc0, 0x00, /* bv %r0(%r22) */ 147 0x0e, 0x88, 0x10, 0x95, /* ldw 4(%r20),%r21 */ 148#define PLT_STUB_ENTRY (3*4) 149 0xea, 0x9f, 0x1f, 0xdd, /* b,l 1b,%r20 */ 150 0xd6, 0x80, 0x1c, 0x1e, /* depi 0,31,2,%r20 */ 151 0x00, 0xc0, 0xff, 0xee, /* 9: .word fixup_func */ 152 0xde, 0xad, 0xbe, 0xef /* .word fixup_ltp */ 153}; 154 155/* Section name for stubs is the associated section name plus this 156 string. */ 157#define STUB_SUFFIX ".stub" 158 159/* We don't need to copy certain PC- or GP-relative dynamic relocs 160 into a shared object's dynamic section. All the relocs of the 161 limited class we are interested in, are absolute. */ 162#ifndef RELATIVE_DYNRELOCS 163#define RELATIVE_DYNRELOCS 0 164#define IS_ABSOLUTE_RELOC(r_type) 1 165#endif 166 167/* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid 168 copying dynamic variables from a shared lib into an app's dynbss 169 section, and instead use a dynamic relocation to point into the 170 shared lib. */ 171#define ELIMINATE_COPY_RELOCS 1 172 173enum elf32_hppa_stub_type 174{ 175 hppa_stub_long_branch, 176 hppa_stub_long_branch_shared, 177 hppa_stub_import, 178 hppa_stub_import_shared, 179 hppa_stub_export, 180 hppa_stub_none 181}; 182 183struct elf32_hppa_stub_hash_entry 184{ 185 /* Base hash table entry structure. */ 186 struct bfd_hash_entry bh_root; 187 188 /* The stub section. */ 189 asection *stub_sec; 190 191 /* Offset within stub_sec of the beginning of this stub. */ 192 bfd_vma stub_offset; 193 194 /* Given the symbol's value and its section we can determine its final 195 value when building the stubs (so the stub knows where to jump. */ 196 bfd_vma target_value; 197 asection *target_section; 198 199 enum elf32_hppa_stub_type stub_type; 200 201 /* The symbol table entry, if any, that this was derived from. */ 202 struct elf32_hppa_link_hash_entry *hh; 203 204 /* Where this stub is being called from, or, in the case of combined 205 stub sections, the first input section in the group. */ 206 asection *id_sec; 207}; 208 209struct elf32_hppa_link_hash_entry 210{ 211 struct elf_link_hash_entry eh; 212 213 /* A pointer to the most recently used stub hash entry against this 214 symbol. */ 215 struct elf32_hppa_stub_hash_entry *hsh_cache; 216 217 /* Used to count relocations for delayed sizing of relocation 218 sections. */ 219 struct elf32_hppa_dyn_reloc_entry 220 { 221 /* Next relocation in the chain. */ 222 struct elf32_hppa_dyn_reloc_entry *hdh_next; 223 224 /* The input section of the reloc. */ 225 asection *sec; 226 227 /* Number of relocs copied in this section. */ 228 bfd_size_type count; 229 230#if RELATIVE_DYNRELOCS 231 /* Number of relative relocs copied for the input section. */ 232 bfd_size_type relative_count; 233#endif 234 } *dyn_relocs; 235 236 enum 237 { 238 GOT_UNKNOWN = 0, GOT_NORMAL = 1, GOT_TLS_GD = 2, GOT_TLS_LDM = 4, GOT_TLS_IE = 8 239 } tls_type; 240 241 /* Set if this symbol is used by a plabel reloc. */ 242 unsigned int plabel:1; 243}; 244 245struct elf32_hppa_link_hash_table 246{ 247 /* The main hash table. */ 248 struct elf_link_hash_table etab; 249 250 /* The stub hash table. */ 251 struct bfd_hash_table bstab; 252 253 /* Linker stub bfd. */ 254 bfd *stub_bfd; 255 256 /* Linker call-backs. */ 257 asection * (*add_stub_section) (const char *, asection *); 258 void (*layout_sections_again) (void); 259 260 /* Array to keep track of which stub sections have been created, and 261 information on stub grouping. */ 262 struct map_stub 263 { 264 /* This is the section to which stubs in the group will be 265 attached. */ 266 asection *link_sec; 267 /* The stub section. */ 268 asection *stub_sec; 269 } *stub_group; 270 271 /* Assorted information used by elf32_hppa_size_stubs. */ 272 unsigned int bfd_count; 273 unsigned int top_index; 274 asection **input_list; 275 Elf_Internal_Sym **all_local_syms; 276 277 /* Used during a final link to store the base of the text and data 278 segments so that we can perform SEGREL relocations. */ 279 bfd_vma text_segment_base; 280 bfd_vma data_segment_base; 281 282 /* Whether we support multiple sub-spaces for shared libs. */ 283 unsigned int multi_subspace:1; 284 285 /* Flags set when various size branches are detected. Used to 286 select suitable defaults for the stub group size. */ 287 unsigned int has_12bit_branch:1; 288 unsigned int has_17bit_branch:1; 289 unsigned int has_22bit_branch:1; 290 291 /* Set if we need a .plt stub to support lazy dynamic linking. */ 292 unsigned int need_plt_stub:1; 293 294 /* Small local sym cache. */ 295 struct sym_cache sym_cache; 296 297 /* Data for LDM relocations. */ 298 union 299 { 300 bfd_signed_vma refcount; 301 bfd_vma offset; 302 } tls_ldm_got; 303}; 304 305/* Various hash macros and functions. */ 306#define hppa_link_hash_table(p) \ 307 (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \ 308 == HPPA32_ELF_DATA ? ((struct elf32_hppa_link_hash_table *) ((p)->hash)) : NULL) 309 310#define hppa_elf_hash_entry(ent) \ 311 ((struct elf32_hppa_link_hash_entry *)(ent)) 312 313#define hppa_stub_hash_entry(ent) \ 314 ((struct elf32_hppa_stub_hash_entry *)(ent)) 315 316#define hppa_stub_hash_lookup(table, string, create, copy) \ 317 ((struct elf32_hppa_stub_hash_entry *) \ 318 bfd_hash_lookup ((table), (string), (create), (copy))) 319 320#define hppa_elf_local_got_tls_type(abfd) \ 321 ((char *)(elf_local_got_offsets (abfd) + (elf_tdata (abfd)->symtab_hdr.sh_info * 2))) 322 323#define hh_name(hh) \ 324 (hh ? hh->eh.root.root.string : "<undef>") 325 326#define eh_name(eh) \ 327 (eh ? eh->root.root.string : "<undef>") 328 329/* Assorted hash table functions. */ 330 331/* Initialize an entry in the stub hash table. */ 332 333static struct bfd_hash_entry * 334stub_hash_newfunc (struct bfd_hash_entry *entry, 335 struct bfd_hash_table *table, 336 const char *string) 337{ 338 /* Allocate the structure if it has not already been allocated by a 339 subclass. */ 340 if (entry == NULL) 341 { 342 entry = bfd_hash_allocate (table, 343 sizeof (struct elf32_hppa_stub_hash_entry)); 344 if (entry == NULL) 345 return entry; 346 } 347 348 /* Call the allocation method of the superclass. */ 349 entry = bfd_hash_newfunc (entry, table, string); 350 if (entry != NULL) 351 { 352 struct elf32_hppa_stub_hash_entry *hsh; 353 354 /* Initialize the local fields. */ 355 hsh = hppa_stub_hash_entry (entry); 356 hsh->stub_sec = NULL; 357 hsh->stub_offset = 0; 358 hsh->target_value = 0; 359 hsh->target_section = NULL; 360 hsh->stub_type = hppa_stub_long_branch; 361 hsh->hh = NULL; 362 hsh->id_sec = NULL; 363 } 364 365 return entry; 366} 367 368/* Initialize an entry in the link hash table. */ 369 370static struct bfd_hash_entry * 371hppa_link_hash_newfunc (struct bfd_hash_entry *entry, 372 struct bfd_hash_table *table, 373 const char *string) 374{ 375 /* Allocate the structure if it has not already been allocated by a 376 subclass. */ 377 if (entry == NULL) 378 { 379 entry = bfd_hash_allocate (table, 380 sizeof (struct elf32_hppa_link_hash_entry)); 381 if (entry == NULL) 382 return entry; 383 } 384 385 /* Call the allocation method of the superclass. */ 386 entry = _bfd_elf_link_hash_newfunc (entry, table, string); 387 if (entry != NULL) 388 { 389 struct elf32_hppa_link_hash_entry *hh; 390 391 /* Initialize the local fields. */ 392 hh = hppa_elf_hash_entry (entry); 393 hh->hsh_cache = NULL; 394 hh->dyn_relocs = NULL; 395 hh->plabel = 0; 396 hh->tls_type = GOT_UNKNOWN; 397 } 398 399 return entry; 400} 401 402/* Free the derived linker hash table. */ 403 404static void 405elf32_hppa_link_hash_table_free (bfd *obfd) 406{ 407 struct elf32_hppa_link_hash_table *htab 408 = (struct elf32_hppa_link_hash_table *) obfd->link.hash; 409 410 bfd_hash_table_free (&htab->bstab); 411 _bfd_elf_link_hash_table_free (obfd); 412} 413 414/* Create the derived linker hash table. The PA ELF port uses the derived 415 hash table to keep information specific to the PA ELF linker (without 416 using static variables). */ 417 418static struct bfd_link_hash_table * 419elf32_hppa_link_hash_table_create (bfd *abfd) 420{ 421 struct elf32_hppa_link_hash_table *htab; 422 bfd_size_type amt = sizeof (*htab); 423 424 htab = bfd_zmalloc (amt); 425 if (htab == NULL) 426 return NULL; 427 428 if (!_bfd_elf_link_hash_table_init (&htab->etab, abfd, hppa_link_hash_newfunc, 429 sizeof (struct elf32_hppa_link_hash_entry), 430 HPPA32_ELF_DATA)) 431 { 432 free (htab); 433 return NULL; 434 } 435 436 /* Init the stub hash table too. */ 437 if (!bfd_hash_table_init (&htab->bstab, stub_hash_newfunc, 438 sizeof (struct elf32_hppa_stub_hash_entry))) 439 { 440 _bfd_elf_link_hash_table_free (abfd); 441 return NULL; 442 } 443 htab->etab.root.hash_table_free = elf32_hppa_link_hash_table_free; 444 445 htab->text_segment_base = (bfd_vma) -1; 446 htab->data_segment_base = (bfd_vma) -1; 447 return &htab->etab.root; 448} 449 450/* Initialize the linker stubs BFD so that we can use it for linker 451 created dynamic sections. */ 452 453void 454elf32_hppa_init_stub_bfd (bfd *abfd, struct bfd_link_info *info) 455{ 456 struct elf32_hppa_link_hash_table *htab = hppa_link_hash_table (info); 457 458 elf_elfheader (abfd)->e_ident[EI_CLASS] = ELFCLASS32; 459 htab->etab.dynobj = abfd; 460} 461 462/* Build a name for an entry in the stub hash table. */ 463 464static char * 465hppa_stub_name (const asection *input_section, 466 const asection *sym_sec, 467 const struct elf32_hppa_link_hash_entry *hh, 468 const Elf_Internal_Rela *rela) 469{ 470 char *stub_name; 471 bfd_size_type len; 472 473 if (hh) 474 { 475 len = 8 + 1 + strlen (hh_name (hh)) + 1 + 8 + 1; 476 stub_name = bfd_malloc (len); 477 if (stub_name != NULL) 478 sprintf (stub_name, "%08x_%s+%x", 479 input_section->id & 0xffffffff, 480 hh_name (hh), 481 (int) rela->r_addend & 0xffffffff); 482 } 483 else 484 { 485 len = 8 + 1 + 8 + 1 + 8 + 1 + 8 + 1; 486 stub_name = bfd_malloc (len); 487 if (stub_name != NULL) 488 sprintf (stub_name, "%08x_%x:%x+%x", 489 input_section->id & 0xffffffff, 490 sym_sec->id & 0xffffffff, 491 (int) ELF32_R_SYM (rela->r_info) & 0xffffffff, 492 (int) rela->r_addend & 0xffffffff); 493 } 494 return stub_name; 495} 496 497/* Look up an entry in the stub hash. Stub entries are cached because 498 creating the stub name takes a bit of time. */ 499 500static struct elf32_hppa_stub_hash_entry * 501hppa_get_stub_entry (const asection *input_section, 502 const asection *sym_sec, 503 struct elf32_hppa_link_hash_entry *hh, 504 const Elf_Internal_Rela *rela, 505 struct elf32_hppa_link_hash_table *htab) 506{ 507 struct elf32_hppa_stub_hash_entry *hsh_entry; 508 const asection *id_sec; 509 510 /* If this input section is part of a group of sections sharing one 511 stub section, then use the id of the first section in the group. 512 Stub names need to include a section id, as there may well be 513 more than one stub used to reach say, printf, and we need to 514 distinguish between them. */ 515 id_sec = htab->stub_group[input_section->id].link_sec; 516 517 if (hh != NULL && hh->hsh_cache != NULL 518 && hh->hsh_cache->hh == hh 519 && hh->hsh_cache->id_sec == id_sec) 520 { 521 hsh_entry = hh->hsh_cache; 522 } 523 else 524 { 525 char *stub_name; 526 527 stub_name = hppa_stub_name (id_sec, sym_sec, hh, rela); 528 if (stub_name == NULL) 529 return NULL; 530 531 hsh_entry = hppa_stub_hash_lookup (&htab->bstab, 532 stub_name, FALSE, FALSE); 533 if (hh != NULL) 534 hh->hsh_cache = hsh_entry; 535 536 free (stub_name); 537 } 538 539 return hsh_entry; 540} 541 542/* Add a new stub entry to the stub hash. Not all fields of the new 543 stub entry are initialised. */ 544 545static struct elf32_hppa_stub_hash_entry * 546hppa_add_stub (const char *stub_name, 547 asection *section, 548 struct elf32_hppa_link_hash_table *htab) 549{ 550 asection *link_sec; 551 asection *stub_sec; 552 struct elf32_hppa_stub_hash_entry *hsh; 553 554 link_sec = htab->stub_group[section->id].link_sec; 555 stub_sec = htab->stub_group[section->id].stub_sec; 556 if (stub_sec == NULL) 557 { 558 stub_sec = htab->stub_group[link_sec->id].stub_sec; 559 if (stub_sec == NULL) 560 { 561 size_t namelen; 562 bfd_size_type len; 563 char *s_name; 564 565 namelen = strlen (link_sec->name); 566 len = namelen + sizeof (STUB_SUFFIX); 567 s_name = bfd_alloc (htab->stub_bfd, len); 568 if (s_name == NULL) 569 return NULL; 570 571 memcpy (s_name, link_sec->name, namelen); 572 memcpy (s_name + namelen, STUB_SUFFIX, sizeof (STUB_SUFFIX)); 573 stub_sec = (*htab->add_stub_section) (s_name, link_sec); 574 if (stub_sec == NULL) 575 return NULL; 576 htab->stub_group[link_sec->id].stub_sec = stub_sec; 577 } 578 htab->stub_group[section->id].stub_sec = stub_sec; 579 } 580 581 /* Enter this entry into the linker stub hash table. */ 582 hsh = hppa_stub_hash_lookup (&htab->bstab, stub_name, 583 TRUE, FALSE); 584 if (hsh == NULL) 585 { 586 /* xgettext:c-format */ 587 _bfd_error_handler (_("%B: cannot create stub entry %s"), 588 section->owner, stub_name); 589 return NULL; 590 } 591 592 hsh->stub_sec = stub_sec; 593 hsh->stub_offset = 0; 594 hsh->id_sec = link_sec; 595 return hsh; 596} 597 598/* Determine the type of stub needed, if any, for a call. */ 599 600static enum elf32_hppa_stub_type 601hppa_type_of_stub (asection *input_sec, 602 const Elf_Internal_Rela *rela, 603 struct elf32_hppa_link_hash_entry *hh, 604 bfd_vma destination, 605 struct bfd_link_info *info) 606{ 607 bfd_vma location; 608 bfd_vma branch_offset; 609 bfd_vma max_branch_offset; 610 unsigned int r_type; 611 612 if (hh != NULL 613 && hh->eh.plt.offset != (bfd_vma) -1 614 && hh->eh.dynindx != -1 615 && !hh->plabel 616 && (bfd_link_pic (info) 617 || !hh->eh.def_regular 618 || hh->eh.root.type == bfd_link_hash_defweak)) 619 { 620 /* We need an import stub. Decide between hppa_stub_import 621 and hppa_stub_import_shared later. */ 622 return hppa_stub_import; 623 } 624 625 /* Determine where the call point is. */ 626 location = (input_sec->output_offset 627 + input_sec->output_section->vma 628 + rela->r_offset); 629 630 branch_offset = destination - location - 8; 631 r_type = ELF32_R_TYPE (rela->r_info); 632 633 /* Determine if a long branch stub is needed. parisc branch offsets 634 are relative to the second instruction past the branch, ie. +8 635 bytes on from the branch instruction location. The offset is 636 signed and counts in units of 4 bytes. */ 637 if (r_type == (unsigned int) R_PARISC_PCREL17F) 638 max_branch_offset = (1 << (17 - 1)) << 2; 639 640 else if (r_type == (unsigned int) R_PARISC_PCREL12F) 641 max_branch_offset = (1 << (12 - 1)) << 2; 642 643 else /* R_PARISC_PCREL22F. */ 644 max_branch_offset = (1 << (22 - 1)) << 2; 645 646 if (branch_offset + max_branch_offset >= 2*max_branch_offset) 647 return hppa_stub_long_branch; 648 649 return hppa_stub_none; 650} 651 652/* Build one linker stub as defined by the stub hash table entry GEN_ENTRY. 653 IN_ARG contains the link info pointer. */ 654 655#define LDIL_R1 0x20200000 /* ldil LR'XXX,%r1 */ 656#define BE_SR4_R1 0xe0202002 /* be,n RR'XXX(%sr4,%r1) */ 657 658#define BL_R1 0xe8200000 /* b,l .+8,%r1 */ 659#define ADDIL_R1 0x28200000 /* addil LR'XXX,%r1,%r1 */ 660#define DEPI_R1 0xd4201c1e /* depi 0,31,2,%r1 */ 661 662#define ADDIL_DP 0x2b600000 /* addil LR'XXX,%dp,%r1 */ 663#define LDW_R1_R21 0x48350000 /* ldw RR'XXX(%sr0,%r1),%r21 */ 664#define BV_R0_R21 0xeaa0c000 /* bv %r0(%r21) */ 665#define LDW_R1_R19 0x48330000 /* ldw RR'XXX(%sr0,%r1),%r19 */ 666 667#define ADDIL_R19 0x2a600000 /* addil LR'XXX,%r19,%r1 */ 668#define LDW_R1_DP 0x483b0000 /* ldw RR'XXX(%sr0,%r1),%dp */ 669 670#define LDSID_R21_R1 0x02a010a1 /* ldsid (%sr0,%r21),%r1 */ 671#define MTSP_R1 0x00011820 /* mtsp %r1,%sr0 */ 672#define BE_SR0_R21 0xe2a00000 /* be 0(%sr0,%r21) */ 673#define STW_RP 0x6bc23fd1 /* stw %rp,-24(%sr0,%sp) */ 674 675#define BL22_RP 0xe800a002 /* b,l,n XXX,%rp */ 676#define BL_RP 0xe8400002 /* b,l,n XXX,%rp */ 677#define NOP 0x08000240 /* nop */ 678#define LDW_RP 0x4bc23fd1 /* ldw -24(%sr0,%sp),%rp */ 679#define LDSID_RP_R1 0x004010a1 /* ldsid (%sr0,%rp),%r1 */ 680#define BE_SR0_RP 0xe0400002 /* be,n 0(%sr0,%rp) */ 681 682#ifndef R19_STUBS 683#define R19_STUBS 1 684#endif 685 686#if R19_STUBS 687#define LDW_R1_DLT LDW_R1_R19 688#else 689#define LDW_R1_DLT LDW_R1_DP 690#endif 691 692static bfd_boolean 693hppa_build_one_stub (struct bfd_hash_entry *bh, void *in_arg) 694{ 695 struct elf32_hppa_stub_hash_entry *hsh; 696 struct bfd_link_info *info; 697 struct elf32_hppa_link_hash_table *htab; 698 asection *stub_sec; 699 bfd *stub_bfd; 700 bfd_byte *loc; 701 bfd_vma sym_value; 702 bfd_vma insn; 703 bfd_vma off; 704 int val; 705 int size; 706 707 /* Massage our args to the form they really have. */ 708 hsh = hppa_stub_hash_entry (bh); 709 info = (struct bfd_link_info *)in_arg; 710 711 htab = hppa_link_hash_table (info); 712 if (htab == NULL) 713 return FALSE; 714 715 stub_sec = hsh->stub_sec; 716 717 /* Make a note of the offset within the stubs for this entry. */ 718 hsh->stub_offset = stub_sec->size; 719 loc = stub_sec->contents + hsh->stub_offset; 720 721 stub_bfd = stub_sec->owner; 722 723 switch (hsh->stub_type) 724 { 725 case hppa_stub_long_branch: 726 /* Create the long branch. A long branch is formed with "ldil" 727 loading the upper bits of the target address into a register, 728 then branching with "be" which adds in the lower bits. 729 The "be" has its delay slot nullified. */ 730 sym_value = (hsh->target_value 731 + hsh->target_section->output_offset 732 + hsh->target_section->output_section->vma); 733 734 val = hppa_field_adjust (sym_value, 0, e_lrsel); 735 insn = hppa_rebuild_insn ((int) LDIL_R1, val, 21); 736 bfd_put_32 (stub_bfd, insn, loc); 737 738 val = hppa_field_adjust (sym_value, 0, e_rrsel) >> 2; 739 insn = hppa_rebuild_insn ((int) BE_SR4_R1, val, 17); 740 bfd_put_32 (stub_bfd, insn, loc + 4); 741 742 size = 8; 743 break; 744 745 case hppa_stub_long_branch_shared: 746 /* Branches are relative. This is where we are going to. */ 747 sym_value = (hsh->target_value 748 + hsh->target_section->output_offset 749 + hsh->target_section->output_section->vma); 750 751 /* And this is where we are coming from, more or less. */ 752 sym_value -= (hsh->stub_offset 753 + stub_sec->output_offset 754 + stub_sec->output_section->vma); 755 756 bfd_put_32 (stub_bfd, (bfd_vma) BL_R1, loc); 757 val = hppa_field_adjust (sym_value, (bfd_signed_vma) -8, e_lrsel); 758 insn = hppa_rebuild_insn ((int) ADDIL_R1, val, 21); 759 bfd_put_32 (stub_bfd, insn, loc + 4); 760 761 val = hppa_field_adjust (sym_value, (bfd_signed_vma) -8, e_rrsel) >> 2; 762 insn = hppa_rebuild_insn ((int) BE_SR4_R1, val, 17); 763 bfd_put_32 (stub_bfd, insn, loc + 8); 764 size = 12; 765 break; 766 767 case hppa_stub_import: 768 case hppa_stub_import_shared: 769 off = hsh->hh->eh.plt.offset; 770 if (off >= (bfd_vma) -2) 771 abort (); 772 773 off &= ~ (bfd_vma) 1; 774 sym_value = (off 775 + htab->etab.splt->output_offset 776 + htab->etab.splt->output_section->vma 777 - elf_gp (htab->etab.splt->output_section->owner)); 778 779 insn = ADDIL_DP; 780#if R19_STUBS 781 if (hsh->stub_type == hppa_stub_import_shared) 782 insn = ADDIL_R19; 783#endif 784 val = hppa_field_adjust (sym_value, 0, e_lrsel), 785 insn = hppa_rebuild_insn ((int) insn, val, 21); 786 bfd_put_32 (stub_bfd, insn, loc); 787 788 /* It is critical to use lrsel/rrsel here because we are using 789 two different offsets (+0 and +4) from sym_value. If we use 790 lsel/rsel then with unfortunate sym_values we will round 791 sym_value+4 up to the next 2k block leading to a mis-match 792 between the lsel and rsel value. */ 793 val = hppa_field_adjust (sym_value, 0, e_rrsel); 794 insn = hppa_rebuild_insn ((int) LDW_R1_R21, val, 14); 795 bfd_put_32 (stub_bfd, insn, loc + 4); 796 797 if (htab->multi_subspace) 798 { 799 val = hppa_field_adjust (sym_value, (bfd_signed_vma) 4, e_rrsel); 800 insn = hppa_rebuild_insn ((int) LDW_R1_DLT, val, 14); 801 bfd_put_32 (stub_bfd, insn, loc + 8); 802 803 bfd_put_32 (stub_bfd, (bfd_vma) LDSID_R21_R1, loc + 12); 804 bfd_put_32 (stub_bfd, (bfd_vma) MTSP_R1, loc + 16); 805 bfd_put_32 (stub_bfd, (bfd_vma) BE_SR0_R21, loc + 20); 806 bfd_put_32 (stub_bfd, (bfd_vma) STW_RP, loc + 24); 807 808 size = 28; 809 } 810 else 811 { 812 bfd_put_32 (stub_bfd, (bfd_vma) BV_R0_R21, loc + 8); 813 val = hppa_field_adjust (sym_value, (bfd_signed_vma) 4, e_rrsel); 814 insn = hppa_rebuild_insn ((int) LDW_R1_DLT, val, 14); 815 bfd_put_32 (stub_bfd, insn, loc + 12); 816 817 size = 16; 818 } 819 820 break; 821 822 case hppa_stub_export: 823 /* Branches are relative. This is where we are going to. */ 824 sym_value = (hsh->target_value 825 + hsh->target_section->output_offset 826 + hsh->target_section->output_section->vma); 827 828 /* And this is where we are coming from. */ 829 sym_value -= (hsh->stub_offset 830 + stub_sec->output_offset 831 + stub_sec->output_section->vma); 832 833 if (sym_value - 8 + (1 << (17 + 1)) >= (1 << (17 + 2)) 834 && (!htab->has_22bit_branch 835 || sym_value - 8 + (1 << (22 + 1)) >= (1 << (22 + 2)))) 836 { 837 _bfd_error_handler 838 /* xgettext:c-format */ 839 (_("%B(%A+0x%lx): cannot reach %s, recompile with -ffunction-sections"), 840 hsh->target_section->owner, 841 stub_sec, 842 (long) hsh->stub_offset, 843 hsh->bh_root.string); 844 bfd_set_error (bfd_error_bad_value); 845 return FALSE; 846 } 847 848 val = hppa_field_adjust (sym_value, (bfd_signed_vma) -8, e_fsel) >> 2; 849 if (!htab->has_22bit_branch) 850 insn = hppa_rebuild_insn ((int) BL_RP, val, 17); 851 else 852 insn = hppa_rebuild_insn ((int) BL22_RP, val, 22); 853 bfd_put_32 (stub_bfd, insn, loc); 854 855 bfd_put_32 (stub_bfd, (bfd_vma) NOP, loc + 4); 856 bfd_put_32 (stub_bfd, (bfd_vma) LDW_RP, loc + 8); 857 bfd_put_32 (stub_bfd, (bfd_vma) LDSID_RP_R1, loc + 12); 858 bfd_put_32 (stub_bfd, (bfd_vma) MTSP_R1, loc + 16); 859 bfd_put_32 (stub_bfd, (bfd_vma) BE_SR0_RP, loc + 20); 860 861 /* Point the function symbol at the stub. */ 862 hsh->hh->eh.root.u.def.section = stub_sec; 863 hsh->hh->eh.root.u.def.value = stub_sec->size; 864 865 size = 24; 866 break; 867 868 default: 869 BFD_FAIL (); 870 return FALSE; 871 } 872 873 stub_sec->size += size; 874 return TRUE; 875} 876 877#undef LDIL_R1 878#undef BE_SR4_R1 879#undef BL_R1 880#undef ADDIL_R1 881#undef DEPI_R1 882#undef LDW_R1_R21 883#undef LDW_R1_DLT 884#undef LDW_R1_R19 885#undef ADDIL_R19 886#undef LDW_R1_DP 887#undef LDSID_R21_R1 888#undef MTSP_R1 889#undef BE_SR0_R21 890#undef STW_RP 891#undef BV_R0_R21 892#undef BL_RP 893#undef NOP 894#undef LDW_RP 895#undef LDSID_RP_R1 896#undef BE_SR0_RP 897 898/* As above, but don't actually build the stub. Just bump offset so 899 we know stub section sizes. */ 900 901static bfd_boolean 902hppa_size_one_stub (struct bfd_hash_entry *bh, void *in_arg) 903{ 904 struct elf32_hppa_stub_hash_entry *hsh; 905 struct elf32_hppa_link_hash_table *htab; 906 int size; 907 908 /* Massage our args to the form they really have. */ 909 hsh = hppa_stub_hash_entry (bh); 910 htab = in_arg; 911 912 if (hsh->stub_type == hppa_stub_long_branch) 913 size = 8; 914 else if (hsh->stub_type == hppa_stub_long_branch_shared) 915 size = 12; 916 else if (hsh->stub_type == hppa_stub_export) 917 size = 24; 918 else /* hppa_stub_import or hppa_stub_import_shared. */ 919 { 920 if (htab->multi_subspace) 921 size = 28; 922 else 923 size = 16; 924 } 925 926 hsh->stub_sec->size += size; 927 return TRUE; 928} 929 930/* Return nonzero if ABFD represents an HPPA ELF32 file. 931 Additionally we set the default architecture and machine. */ 932 933static bfd_boolean 934elf32_hppa_object_p (bfd *abfd) 935{ 936 Elf_Internal_Ehdr * i_ehdrp; 937 unsigned int flags; 938 939 i_ehdrp = elf_elfheader (abfd); 940 if (strcmp (bfd_get_target (abfd), "elf32-hppa-linux") == 0) 941 { 942 /* GCC on hppa-linux produces binaries with OSABI=GNU, 943 but the kernel produces corefiles with OSABI=SysV. */ 944 if (i_ehdrp->e_ident[EI_OSABI] != ELFOSABI_GNU && 945 i_ehdrp->e_ident[EI_OSABI] != ELFOSABI_NONE) /* aka SYSV */ 946 return FALSE; 947 } 948 else if (strcmp (bfd_get_target (abfd), "elf32-hppa-netbsd") == 0) 949 { 950 /* GCC on hppa-netbsd produces binaries with OSABI=NetBSD, 951 but the kernel produces corefiles with OSABI=SysV. */ 952 if (i_ehdrp->e_ident[EI_OSABI] != ELFOSABI_NETBSD && 953 i_ehdrp->e_ident[EI_OSABI] != ELFOSABI_NONE) /* aka SYSV */ 954 return FALSE; 955 } 956 else 957 { 958 if (i_ehdrp->e_ident[EI_OSABI] != ELFOSABI_HPUX) 959 return FALSE; 960 } 961 962 flags = i_ehdrp->e_flags; 963 switch (flags & (EF_PARISC_ARCH | EF_PARISC_WIDE)) 964 { 965 case EFA_PARISC_1_0: 966 return bfd_default_set_arch_mach (abfd, bfd_arch_hppa, 10); 967 case EFA_PARISC_1_1: 968 return bfd_default_set_arch_mach (abfd, bfd_arch_hppa, 11); 969 case EFA_PARISC_2_0: 970 return bfd_default_set_arch_mach (abfd, bfd_arch_hppa, 20); 971 case EFA_PARISC_2_0 | EF_PARISC_WIDE: 972 return bfd_default_set_arch_mach (abfd, bfd_arch_hppa, 25); 973 } 974 return TRUE; 975} 976 977/* Create the .plt and .got sections, and set up our hash table 978 short-cuts to various dynamic sections. */ 979 980static bfd_boolean 981elf32_hppa_create_dynamic_sections (bfd *abfd, struct bfd_link_info *info) 982{ 983 struct elf32_hppa_link_hash_table *htab; 984 struct elf_link_hash_entry *eh; 985 986 /* Don't try to create the .plt and .got twice. */ 987 htab = hppa_link_hash_table (info); 988 if (htab == NULL) 989 return FALSE; 990 if (htab->etab.splt != NULL) 991 return TRUE; 992 993 /* Call the generic code to do most of the work. */ 994 if (! _bfd_elf_create_dynamic_sections (abfd, info)) 995 return FALSE; 996 997 /* hppa-linux needs _GLOBAL_OFFSET_TABLE_ to be visible from the main 998 application, because __canonicalize_funcptr_for_compare needs it. */ 999 eh = elf_hash_table (info)->hgot; 1000 eh->forced_local = 0; 1001 eh->other = STV_DEFAULT; 1002 return bfd_elf_link_record_dynamic_symbol (info, eh); 1003} 1004 1005/* Copy the extra info we tack onto an elf_link_hash_entry. */ 1006 1007static void 1008elf32_hppa_copy_indirect_symbol (struct bfd_link_info *info, 1009 struct elf_link_hash_entry *eh_dir, 1010 struct elf_link_hash_entry *eh_ind) 1011{ 1012 struct elf32_hppa_link_hash_entry *hh_dir, *hh_ind; 1013 1014 hh_dir = hppa_elf_hash_entry (eh_dir); 1015 hh_ind = hppa_elf_hash_entry (eh_ind); 1016 1017 if (hh_ind->dyn_relocs != NULL) 1018 { 1019 if (hh_dir->dyn_relocs != NULL) 1020 { 1021 struct elf32_hppa_dyn_reloc_entry **hdh_pp; 1022 struct elf32_hppa_dyn_reloc_entry *hdh_p; 1023 1024 /* Add reloc counts against the indirect sym to the direct sym 1025 list. Merge any entries against the same section. */ 1026 for (hdh_pp = &hh_ind->dyn_relocs; (hdh_p = *hdh_pp) != NULL; ) 1027 { 1028 struct elf32_hppa_dyn_reloc_entry *hdh_q; 1029 1030 for (hdh_q = hh_dir->dyn_relocs; 1031 hdh_q != NULL; 1032 hdh_q = hdh_q->hdh_next) 1033 if (hdh_q->sec == hdh_p->sec) 1034 { 1035#if RELATIVE_DYNRELOCS 1036 hdh_q->relative_count += hdh_p->relative_count; 1037#endif 1038 hdh_q->count += hdh_p->count; 1039 *hdh_pp = hdh_p->hdh_next; 1040 break; 1041 } 1042 if (hdh_q == NULL) 1043 hdh_pp = &hdh_p->hdh_next; 1044 } 1045 *hdh_pp = hh_dir->dyn_relocs; 1046 } 1047 1048 hh_dir->dyn_relocs = hh_ind->dyn_relocs; 1049 hh_ind->dyn_relocs = NULL; 1050 } 1051 1052 if (ELIMINATE_COPY_RELOCS 1053 && eh_ind->root.type != bfd_link_hash_indirect 1054 && eh_dir->dynamic_adjusted) 1055 { 1056 /* If called to transfer flags for a weakdef during processing 1057 of elf_adjust_dynamic_symbol, don't copy non_got_ref. 1058 We clear it ourselves for ELIMINATE_COPY_RELOCS. */ 1059 if (eh_dir->versioned != versioned_hidden) 1060 eh_dir->ref_dynamic |= eh_ind->ref_dynamic; 1061 eh_dir->ref_regular |= eh_ind->ref_regular; 1062 eh_dir->ref_regular_nonweak |= eh_ind->ref_regular_nonweak; 1063 eh_dir->needs_plt |= eh_ind->needs_plt; 1064 } 1065 else 1066 { 1067 if (eh_ind->root.type == bfd_link_hash_indirect) 1068 { 1069 hh_dir->plabel |= hh_ind->plabel; 1070 hh_dir->tls_type |= hh_ind->tls_type; 1071 hh_ind->tls_type = GOT_UNKNOWN; 1072 } 1073 1074 _bfd_elf_link_hash_copy_indirect (info, eh_dir, eh_ind); 1075 } 1076} 1077 1078static int 1079elf32_hppa_optimized_tls_reloc (struct bfd_link_info *info ATTRIBUTE_UNUSED, 1080 int r_type, int is_local ATTRIBUTE_UNUSED) 1081{ 1082 /* For now we don't support linker optimizations. */ 1083 return r_type; 1084} 1085 1086/* Return a pointer to the local GOT, PLT and TLS reference counts 1087 for ABFD. Returns NULL if the storage allocation fails. */ 1088 1089static bfd_signed_vma * 1090hppa32_elf_local_refcounts (bfd *abfd) 1091{ 1092 Elf_Internal_Shdr *symtab_hdr = &elf_tdata (abfd)->symtab_hdr; 1093 bfd_signed_vma *local_refcounts; 1094 1095 local_refcounts = elf_local_got_refcounts (abfd); 1096 if (local_refcounts == NULL) 1097 { 1098 bfd_size_type size; 1099 1100 /* Allocate space for local GOT and PLT reference 1101 counts. Done this way to save polluting elf_obj_tdata 1102 with another target specific pointer. */ 1103 size = symtab_hdr->sh_info; 1104 size *= 2 * sizeof (bfd_signed_vma); 1105 /* Add in space to store the local GOT TLS types. */ 1106 size += symtab_hdr->sh_info; 1107 local_refcounts = bfd_zalloc (abfd, size); 1108 if (local_refcounts == NULL) 1109 return NULL; 1110 elf_local_got_refcounts (abfd) = local_refcounts; 1111 memset (hppa_elf_local_got_tls_type (abfd), GOT_UNKNOWN, 1112 symtab_hdr->sh_info); 1113 } 1114 return local_refcounts; 1115} 1116 1117 1118/* Look through the relocs for a section during the first phase, and 1119 calculate needed space in the global offset table, procedure linkage 1120 table, and dynamic reloc sections. At this point we haven't 1121 necessarily read all the input files. */ 1122 1123static bfd_boolean 1124elf32_hppa_check_relocs (bfd *abfd, 1125 struct bfd_link_info *info, 1126 asection *sec, 1127 const Elf_Internal_Rela *relocs) 1128{ 1129 Elf_Internal_Shdr *symtab_hdr; 1130 struct elf_link_hash_entry **eh_syms; 1131 const Elf_Internal_Rela *rela; 1132 const Elf_Internal_Rela *rela_end; 1133 struct elf32_hppa_link_hash_table *htab; 1134 asection *sreloc; 1135 int tls_type = GOT_UNKNOWN, old_tls_type = GOT_UNKNOWN; 1136 1137 if (bfd_link_relocatable (info)) 1138 return TRUE; 1139 1140 htab = hppa_link_hash_table (info); 1141 if (htab == NULL) 1142 return FALSE; 1143 symtab_hdr = &elf_tdata (abfd)->symtab_hdr; 1144 eh_syms = elf_sym_hashes (abfd); 1145 sreloc = NULL; 1146 1147 rela_end = relocs + sec->reloc_count; 1148 for (rela = relocs; rela < rela_end; rela++) 1149 { 1150 enum { 1151 NEED_GOT = 1, 1152 NEED_PLT = 2, 1153 NEED_DYNREL = 4, 1154 PLT_PLABEL = 8 1155 }; 1156 1157 unsigned int r_symndx, r_type; 1158 struct elf32_hppa_link_hash_entry *hh; 1159 int need_entry = 0; 1160 1161 r_symndx = ELF32_R_SYM (rela->r_info); 1162 1163 if (r_symndx < symtab_hdr->sh_info) 1164 hh = NULL; 1165 else 1166 { 1167 hh = hppa_elf_hash_entry (eh_syms[r_symndx - symtab_hdr->sh_info]); 1168 while (hh->eh.root.type == bfd_link_hash_indirect 1169 || hh->eh.root.type == bfd_link_hash_warning) 1170 hh = hppa_elf_hash_entry (hh->eh.root.u.i.link); 1171 1172 /* PR15323, ref flags aren't set for references in the same 1173 object. */ 1174 hh->eh.root.non_ir_ref = 1; 1175 } 1176 1177 r_type = ELF32_R_TYPE (rela->r_info); 1178 r_type = elf32_hppa_optimized_tls_reloc (info, r_type, hh == NULL); 1179 1180 switch (r_type) 1181 { 1182 case R_PARISC_DLTIND14F: 1183 case R_PARISC_DLTIND14R: 1184 case R_PARISC_DLTIND21L: 1185 /* This symbol requires a global offset table entry. */ 1186 need_entry = NEED_GOT; 1187 break; 1188 1189 case R_PARISC_PLABEL14R: /* "Official" procedure labels. */ 1190 case R_PARISC_PLABEL21L: 1191 case R_PARISC_PLABEL32: 1192 /* If the addend is non-zero, we break badly. */ 1193 if (rela->r_addend != 0) 1194 abort (); 1195 1196 /* If we are creating a shared library, then we need to 1197 create a PLT entry for all PLABELs, because PLABELs with 1198 local symbols may be passed via a pointer to another 1199 object. Additionally, output a dynamic relocation 1200 pointing to the PLT entry. 1201 1202 For executables, the original 32-bit ABI allowed two 1203 different styles of PLABELs (function pointers): For 1204 global functions, the PLABEL word points into the .plt 1205 two bytes past a (function address, gp) pair, and for 1206 local functions the PLABEL points directly at the 1207 function. The magic +2 for the first type allows us to 1208 differentiate between the two. As you can imagine, this 1209 is a real pain when it comes to generating code to call 1210 functions indirectly or to compare function pointers. 1211 We avoid the mess by always pointing a PLABEL into the 1212 .plt, even for local functions. */ 1213 need_entry = PLT_PLABEL | NEED_PLT | NEED_DYNREL; 1214 break; 1215 1216 case R_PARISC_PCREL12F: 1217 htab->has_12bit_branch = 1; 1218 goto branch_common; 1219 1220 case R_PARISC_PCREL17C: 1221 case R_PARISC_PCREL17F: 1222 htab->has_17bit_branch = 1; 1223 goto branch_common; 1224 1225 case R_PARISC_PCREL22F: 1226 htab->has_22bit_branch = 1; 1227 branch_common: 1228 /* Function calls might need to go through the .plt, and 1229 might require long branch stubs. */ 1230 if (hh == NULL) 1231 { 1232 /* We know local syms won't need a .plt entry, and if 1233 they need a long branch stub we can't guarantee that 1234 we can reach the stub. So just flag an error later 1235 if we're doing a shared link and find we need a long 1236 branch stub. */ 1237 continue; 1238 } 1239 else 1240 { 1241 /* Global symbols will need a .plt entry if they remain 1242 global, and in most cases won't need a long branch 1243 stub. Unfortunately, we have to cater for the case 1244 where a symbol is forced local by versioning, or due 1245 to symbolic linking, and we lose the .plt entry. */ 1246 need_entry = NEED_PLT; 1247 if (hh->eh.type == STT_PARISC_MILLI) 1248 need_entry = 0; 1249 } 1250 break; 1251 1252 case R_PARISC_SEGBASE: /* Used to set segment base. */ 1253 case R_PARISC_SEGREL32: /* Relative reloc, used for unwind. */ 1254 case R_PARISC_PCREL14F: /* PC relative load/store. */ 1255 case R_PARISC_PCREL14R: 1256 case R_PARISC_PCREL17R: /* External branches. */ 1257 case R_PARISC_PCREL21L: /* As above, and for load/store too. */ 1258 case R_PARISC_PCREL32: 1259 /* We don't need to propagate the relocation if linking a 1260 shared object since these are section relative. */ 1261 continue; 1262 1263 case R_PARISC_DPREL14F: /* Used for gp rel data load/store. */ 1264 case R_PARISC_DPREL14R: 1265 case R_PARISC_DPREL21L: 1266 if (bfd_link_pic (info)) 1267 { 1268 _bfd_error_handler 1269 /* xgettext:c-format */ 1270 (_("%B: relocation %s can not be used when making a shared object; recompile with -fPIC"), 1271 abfd, 1272 elf_hppa_howto_table[r_type].name); 1273 bfd_set_error (bfd_error_bad_value); 1274 return FALSE; 1275 } 1276 /* Fall through. */ 1277 1278 case R_PARISC_DIR17F: /* Used for external branches. */ 1279 case R_PARISC_DIR17R: 1280 case R_PARISC_DIR14F: /* Used for load/store from absolute locn. */ 1281 case R_PARISC_DIR14R: 1282 case R_PARISC_DIR21L: /* As above, and for ext branches too. */ 1283 case R_PARISC_DIR32: /* .word relocs. */ 1284 /* We may want to output a dynamic relocation later. */ 1285 need_entry = NEED_DYNREL; 1286 break; 1287 1288 /* This relocation describes the C++ object vtable hierarchy. 1289 Reconstruct it for later use during GC. */ 1290 case R_PARISC_GNU_VTINHERIT: 1291 if (!bfd_elf_gc_record_vtinherit (abfd, sec, &hh->eh, rela->r_offset)) 1292 return FALSE; 1293 continue; 1294 1295 /* This relocation describes which C++ vtable entries are actually 1296 used. Record for later use during GC. */ 1297 case R_PARISC_GNU_VTENTRY: 1298 BFD_ASSERT (hh != NULL); 1299 if (hh != NULL 1300 && !bfd_elf_gc_record_vtentry (abfd, sec, &hh->eh, rela->r_addend)) 1301 return FALSE; 1302 continue; 1303 1304 case R_PARISC_TLS_GD21L: 1305 case R_PARISC_TLS_GD14R: 1306 case R_PARISC_TLS_LDM21L: 1307 case R_PARISC_TLS_LDM14R: 1308 need_entry = NEED_GOT; 1309 break; 1310 1311 case R_PARISC_TLS_IE21L: 1312 case R_PARISC_TLS_IE14R: 1313 if (bfd_link_pic (info)) 1314 info->flags |= DF_STATIC_TLS; 1315 need_entry = NEED_GOT; 1316 break; 1317 1318 default: 1319 continue; 1320 } 1321 1322 /* Now carry out our orders. */ 1323 if (need_entry & NEED_GOT) 1324 { 1325 switch (r_type) 1326 { 1327 default: 1328 tls_type = GOT_NORMAL; 1329 break; 1330 case R_PARISC_TLS_GD21L: 1331 case R_PARISC_TLS_GD14R: 1332 tls_type |= GOT_TLS_GD; 1333 break; 1334 case R_PARISC_TLS_LDM21L: 1335 case R_PARISC_TLS_LDM14R: 1336 tls_type |= GOT_TLS_LDM; 1337 break; 1338 case R_PARISC_TLS_IE21L: 1339 case R_PARISC_TLS_IE14R: 1340 tls_type |= GOT_TLS_IE; 1341 break; 1342 } 1343 1344 /* Allocate space for a GOT entry, as well as a dynamic 1345 relocation for this entry. */ 1346 if (htab->etab.sgot == NULL) 1347 { 1348 if (!elf32_hppa_create_dynamic_sections (htab->etab.dynobj, info)) 1349 return FALSE; 1350 } 1351 1352 if (r_type == R_PARISC_TLS_LDM21L 1353 || r_type == R_PARISC_TLS_LDM14R) 1354 htab->tls_ldm_got.refcount += 1; 1355 else 1356 { 1357 if (hh != NULL) 1358 { 1359 hh->eh.got.refcount += 1; 1360 old_tls_type = hh->tls_type; 1361 } 1362 else 1363 { 1364 bfd_signed_vma *local_got_refcounts; 1365 1366 /* This is a global offset table entry for a local symbol. */ 1367 local_got_refcounts = hppa32_elf_local_refcounts (abfd); 1368 if (local_got_refcounts == NULL) 1369 return FALSE; 1370 local_got_refcounts[r_symndx] += 1; 1371 1372 old_tls_type = hppa_elf_local_got_tls_type (abfd) [r_symndx]; 1373 } 1374 1375 tls_type |= old_tls_type; 1376 1377 if (old_tls_type != tls_type) 1378 { 1379 if (hh != NULL) 1380 hh->tls_type = tls_type; 1381 else 1382 hppa_elf_local_got_tls_type (abfd) [r_symndx] = tls_type; 1383 } 1384 1385 } 1386 } 1387 1388 if (need_entry & NEED_PLT) 1389 { 1390 /* If we are creating a shared library, and this is a reloc 1391 against a weak symbol or a global symbol in a dynamic 1392 object, then we will be creating an import stub and a 1393 .plt entry for the symbol. Similarly, on a normal link 1394 to symbols defined in a dynamic object we'll need the 1395 import stub and a .plt entry. We don't know yet whether 1396 the symbol is defined or not, so make an entry anyway and 1397 clean up later in adjust_dynamic_symbol. */ 1398 if ((sec->flags & SEC_ALLOC) != 0) 1399 { 1400 if (hh != NULL) 1401 { 1402 hh->eh.needs_plt = 1; 1403 hh->eh.plt.refcount += 1; 1404 1405 /* If this .plt entry is for a plabel, mark it so 1406 that adjust_dynamic_symbol will keep the entry 1407 even if it appears to be local. */ 1408 if (need_entry & PLT_PLABEL) 1409 hh->plabel = 1; 1410 } 1411 else if (need_entry & PLT_PLABEL) 1412 { 1413 bfd_signed_vma *local_got_refcounts; 1414 bfd_signed_vma *local_plt_refcounts; 1415 1416 local_got_refcounts = hppa32_elf_local_refcounts (abfd); 1417 if (local_got_refcounts == NULL) 1418 return FALSE; 1419 local_plt_refcounts = (local_got_refcounts 1420 + symtab_hdr->sh_info); 1421 local_plt_refcounts[r_symndx] += 1; 1422 } 1423 } 1424 } 1425 1426 if (need_entry & NEED_DYNREL) 1427 { 1428 /* Flag this symbol as having a non-got, non-plt reference 1429 so that we generate copy relocs if it turns out to be 1430 dynamic. */ 1431 if (hh != NULL && !bfd_link_pic (info)) 1432 hh->eh.non_got_ref = 1; 1433 1434 /* If we are creating a shared library then we need to copy 1435 the reloc into the shared library. However, if we are 1436 linking with -Bsymbolic, we need only copy absolute 1437 relocs or relocs against symbols that are not defined in 1438 an object we are including in the link. PC- or DP- or 1439 DLT-relative relocs against any local sym or global sym 1440 with DEF_REGULAR set, can be discarded. At this point we 1441 have not seen all the input files, so it is possible that 1442 DEF_REGULAR is not set now but will be set later (it is 1443 never cleared). We account for that possibility below by 1444 storing information in the dyn_relocs field of the 1445 hash table entry. 1446 1447 A similar situation to the -Bsymbolic case occurs when 1448 creating shared libraries and symbol visibility changes 1449 render the symbol local. 1450 1451 As it turns out, all the relocs we will be creating here 1452 are absolute, so we cannot remove them on -Bsymbolic 1453 links or visibility changes anyway. A STUB_REL reloc 1454 is absolute too, as in that case it is the reloc in the 1455 stub we will be creating, rather than copying the PCREL 1456 reloc in the branch. 1457 1458 If on the other hand, we are creating an executable, we 1459 may need to keep relocations for symbols satisfied by a 1460 dynamic library if we manage to avoid copy relocs for the 1461 symbol. */ 1462 if ((bfd_link_pic (info) 1463 && (sec->flags & SEC_ALLOC) != 0 1464 && (IS_ABSOLUTE_RELOC (r_type) 1465 || (hh != NULL 1466 && (!SYMBOLIC_BIND (info, &hh->eh) 1467 || hh->eh.root.type == bfd_link_hash_defweak 1468 || !hh->eh.def_regular)))) 1469 || (ELIMINATE_COPY_RELOCS 1470 && !bfd_link_pic (info) 1471 && (sec->flags & SEC_ALLOC) != 0 1472 && hh != NULL 1473 && (hh->eh.root.type == bfd_link_hash_defweak 1474 || !hh->eh.def_regular))) 1475 { 1476 struct elf32_hppa_dyn_reloc_entry *hdh_p; 1477 struct elf32_hppa_dyn_reloc_entry **hdh_head; 1478 1479 /* Create a reloc section in dynobj and make room for 1480 this reloc. */ 1481 if (sreloc == NULL) 1482 { 1483 sreloc = _bfd_elf_make_dynamic_reloc_section 1484 (sec, htab->etab.dynobj, 2, abfd, /*rela?*/ TRUE); 1485 1486 if (sreloc == NULL) 1487 { 1488 bfd_set_error (bfd_error_bad_value); 1489 return FALSE; 1490 } 1491 } 1492 1493 /* If this is a global symbol, we count the number of 1494 relocations we need for this symbol. */ 1495 if (hh != NULL) 1496 { 1497 hdh_head = &hh->dyn_relocs; 1498 } 1499 else 1500 { 1501 /* Track dynamic relocs needed for local syms too. 1502 We really need local syms available to do this 1503 easily. Oh well. */ 1504 asection *sr; 1505 void *vpp; 1506 Elf_Internal_Sym *isym; 1507 1508 isym = bfd_sym_from_r_symndx (&htab->sym_cache, 1509 abfd, r_symndx); 1510 if (isym == NULL) 1511 return FALSE; 1512 1513 sr = bfd_section_from_elf_index (abfd, isym->st_shndx); 1514 if (sr == NULL) 1515 sr = sec; 1516 1517 vpp = &elf_section_data (sr)->local_dynrel; 1518 hdh_head = (struct elf32_hppa_dyn_reloc_entry **) vpp; 1519 } 1520 1521 hdh_p = *hdh_head; 1522 if (hdh_p == NULL || hdh_p->sec != sec) 1523 { 1524 hdh_p = bfd_alloc (htab->etab.dynobj, sizeof *hdh_p); 1525 if (hdh_p == NULL) 1526 return FALSE; 1527 hdh_p->hdh_next = *hdh_head; 1528 *hdh_head = hdh_p; 1529 hdh_p->sec = sec; 1530 hdh_p->count = 0; 1531#if RELATIVE_DYNRELOCS 1532 hdh_p->relative_count = 0; 1533#endif 1534 } 1535 1536 hdh_p->count += 1; 1537#if RELATIVE_DYNRELOCS 1538 if (!IS_ABSOLUTE_RELOC (rtype)) 1539 hdh_p->relative_count += 1; 1540#endif 1541 } 1542 } 1543 } 1544 1545 return TRUE; 1546} 1547 1548/* Return the section that should be marked against garbage collection 1549 for a given relocation. */ 1550 1551static asection * 1552elf32_hppa_gc_mark_hook (asection *sec, 1553 struct bfd_link_info *info, 1554 Elf_Internal_Rela *rela, 1555 struct elf_link_hash_entry *hh, 1556 Elf_Internal_Sym *sym) 1557{ 1558 if (hh != NULL) 1559 switch ((unsigned int) ELF32_R_TYPE (rela->r_info)) 1560 { 1561 case R_PARISC_GNU_VTINHERIT: 1562 case R_PARISC_GNU_VTENTRY: 1563 return NULL; 1564 } 1565 1566 return _bfd_elf_gc_mark_hook (sec, info, rela, hh, sym); 1567} 1568 1569/* Update the got and plt entry reference counts for the section being 1570 removed. */ 1571 1572static bfd_boolean 1573elf32_hppa_gc_sweep_hook (bfd *abfd, 1574 struct bfd_link_info *info ATTRIBUTE_UNUSED, 1575 asection *sec, 1576 const Elf_Internal_Rela *relocs) 1577{ 1578 Elf_Internal_Shdr *symtab_hdr; 1579 struct elf_link_hash_entry **eh_syms; 1580 bfd_signed_vma *local_got_refcounts; 1581 bfd_signed_vma *local_plt_refcounts; 1582 const Elf_Internal_Rela *rela, *relend; 1583 struct elf32_hppa_link_hash_table *htab; 1584 1585 if (bfd_link_relocatable (info)) 1586 return TRUE; 1587 1588 htab = hppa_link_hash_table (info); 1589 if (htab == NULL) 1590 return FALSE; 1591 1592 elf_section_data (sec)->local_dynrel = NULL; 1593 1594 symtab_hdr = &elf_tdata (abfd)->symtab_hdr; 1595 eh_syms = elf_sym_hashes (abfd); 1596 local_got_refcounts = elf_local_got_refcounts (abfd); 1597 local_plt_refcounts = local_got_refcounts; 1598 if (local_plt_refcounts != NULL) 1599 local_plt_refcounts += symtab_hdr->sh_info; 1600 1601 relend = relocs + sec->reloc_count; 1602 for (rela = relocs; rela < relend; rela++) 1603 { 1604 unsigned long r_symndx; 1605 unsigned int r_type; 1606 struct elf_link_hash_entry *eh = NULL; 1607 1608 r_symndx = ELF32_R_SYM (rela->r_info); 1609 if (r_symndx >= symtab_hdr->sh_info) 1610 { 1611 struct elf32_hppa_link_hash_entry *hh; 1612 struct elf32_hppa_dyn_reloc_entry **hdh_pp; 1613 struct elf32_hppa_dyn_reloc_entry *hdh_p; 1614 1615 eh = eh_syms[r_symndx - symtab_hdr->sh_info]; 1616 while (eh->root.type == bfd_link_hash_indirect 1617 || eh->root.type == bfd_link_hash_warning) 1618 eh = (struct elf_link_hash_entry *) eh->root.u.i.link; 1619 hh = hppa_elf_hash_entry (eh); 1620 1621 for (hdh_pp = &hh->dyn_relocs; (hdh_p = *hdh_pp) != NULL; hdh_pp = &hdh_p->hdh_next) 1622 if (hdh_p->sec == sec) 1623 { 1624 /* Everything must go for SEC. */ 1625 *hdh_pp = hdh_p->hdh_next; 1626 break; 1627 } 1628 } 1629 1630 r_type = ELF32_R_TYPE (rela->r_info); 1631 r_type = elf32_hppa_optimized_tls_reloc (info, r_type, eh != NULL); 1632 1633 switch (r_type) 1634 { 1635 case R_PARISC_DLTIND14F: 1636 case R_PARISC_DLTIND14R: 1637 case R_PARISC_DLTIND21L: 1638 case R_PARISC_TLS_GD21L: 1639 case R_PARISC_TLS_GD14R: 1640 case R_PARISC_TLS_IE21L: 1641 case R_PARISC_TLS_IE14R: 1642 if (eh != NULL) 1643 { 1644 if (eh->got.refcount > 0) 1645 eh->got.refcount -= 1; 1646 } 1647 else if (local_got_refcounts != NULL) 1648 { 1649 if (local_got_refcounts[r_symndx] > 0) 1650 local_got_refcounts[r_symndx] -= 1; 1651 } 1652 break; 1653 1654 case R_PARISC_TLS_LDM21L: 1655 case R_PARISC_TLS_LDM14R: 1656 htab->tls_ldm_got.refcount -= 1; 1657 break; 1658 1659 case R_PARISC_PCREL12F: 1660 case R_PARISC_PCREL17C: 1661 case R_PARISC_PCREL17F: 1662 case R_PARISC_PCREL22F: 1663 if (eh != NULL) 1664 { 1665 if (eh->plt.refcount > 0) 1666 eh->plt.refcount -= 1; 1667 } 1668 break; 1669 1670 case R_PARISC_PLABEL14R: 1671 case R_PARISC_PLABEL21L: 1672 case R_PARISC_PLABEL32: 1673 if (eh != NULL) 1674 { 1675 if (eh->plt.refcount > 0) 1676 eh->plt.refcount -= 1; 1677 } 1678 else if (local_plt_refcounts != NULL) 1679 { 1680 if (local_plt_refcounts[r_symndx] > 0) 1681 local_plt_refcounts[r_symndx] -= 1; 1682 } 1683 break; 1684 1685 default: 1686 break; 1687 } 1688 } 1689 1690 return TRUE; 1691} 1692 1693/* Support for core dump NOTE sections. */ 1694 1695static bfd_boolean 1696elf32_hppa_grok_prstatus (bfd *abfd, Elf_Internal_Note *note) 1697{ 1698 int offset; 1699 size_t size; 1700 1701 switch (note->descsz) 1702 { 1703 default: 1704 return FALSE; 1705 1706 case 396: /* Linux/hppa */ 1707 /* pr_cursig */ 1708 elf_tdata (abfd)->core->signal = bfd_get_16 (abfd, note->descdata + 12); 1709 1710 /* pr_pid */ 1711 elf_tdata (abfd)->core->lwpid = bfd_get_32 (abfd, note->descdata + 24); 1712 1713 /* pr_reg */ 1714 offset = 72; 1715 size = 320; 1716 1717 break; 1718 } 1719 1720 /* Make a ".reg/999" section. */ 1721 return _bfd_elfcore_make_pseudosection (abfd, ".reg", 1722 size, note->descpos + offset); 1723} 1724 1725static bfd_boolean 1726elf32_hppa_grok_psinfo (bfd *abfd, Elf_Internal_Note *note) 1727{ 1728 switch (note->descsz) 1729 { 1730 default: 1731 return FALSE; 1732 1733 case 124: /* Linux/hppa elf_prpsinfo. */ 1734 elf_tdata (abfd)->core->program 1735 = _bfd_elfcore_strndup (abfd, note->descdata + 28, 16); 1736 elf_tdata (abfd)->core->command 1737 = _bfd_elfcore_strndup (abfd, note->descdata + 44, 80); 1738 } 1739 1740 /* Note that for some reason, a spurious space is tacked 1741 onto the end of the args in some (at least one anyway) 1742 implementations, so strip it off if it exists. */ 1743 { 1744 char *command = elf_tdata (abfd)->core->command; 1745 int n = strlen (command); 1746 1747 if (0 < n && command[n - 1] == ' ') 1748 command[n - 1] = '\0'; 1749 } 1750 1751 return TRUE; 1752} 1753 1754/* Our own version of hide_symbol, so that we can keep plt entries for 1755 plabels. */ 1756 1757static void 1758elf32_hppa_hide_symbol (struct bfd_link_info *info, 1759 struct elf_link_hash_entry *eh, 1760 bfd_boolean force_local) 1761{ 1762 if (force_local) 1763 { 1764 eh->forced_local = 1; 1765 if (eh->dynindx != -1) 1766 { 1767 eh->dynindx = -1; 1768 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr, 1769 eh->dynstr_index); 1770 } 1771 1772 /* PR 16082: Remove version information from hidden symbol. */ 1773 eh->verinfo.verdef = NULL; 1774 eh->verinfo.vertree = NULL; 1775 } 1776 1777 /* STT_GNU_IFUNC symbol must go through PLT. */ 1778 if (! hppa_elf_hash_entry (eh)->plabel 1779 && eh->type != STT_GNU_IFUNC) 1780 { 1781 eh->needs_plt = 0; 1782 eh->plt = elf_hash_table (info)->init_plt_offset; 1783 } 1784} 1785 1786/* Adjust a symbol defined by a dynamic object and referenced by a 1787 regular object. The current definition is in some section of the 1788 dynamic object, but we're not including those sections. We have to 1789 change the definition to something the rest of the link can 1790 understand. */ 1791 1792static bfd_boolean 1793elf32_hppa_adjust_dynamic_symbol (struct bfd_link_info *info, 1794 struct elf_link_hash_entry *eh) 1795{ 1796 struct elf32_hppa_link_hash_table *htab; 1797 asection *sec, *srel; 1798 1799 /* If this is a function, put it in the procedure linkage table. We 1800 will fill in the contents of the procedure linkage table later. */ 1801 if (eh->type == STT_FUNC 1802 || eh->needs_plt) 1803 { 1804 /* If the symbol is used by a plabel, we must allocate a PLT slot. 1805 The refcounts are not reliable when it has been hidden since 1806 hide_symbol can be called before the plabel flag is set. */ 1807 if (hppa_elf_hash_entry (eh)->plabel 1808 && eh->plt.refcount <= 0) 1809 eh->plt.refcount = 1; 1810 1811 if (eh->plt.refcount <= 0 1812 || (eh->def_regular 1813 && eh->root.type != bfd_link_hash_defweak 1814 && ! hppa_elf_hash_entry (eh)->plabel 1815 && (!bfd_link_pic (info) || SYMBOLIC_BIND (info, eh)))) 1816 { 1817 /* The .plt entry is not needed when: 1818 a) Garbage collection has removed all references to the 1819 symbol, or 1820 b) We know for certain the symbol is defined in this 1821 object, and it's not a weak definition, nor is the symbol 1822 used by a plabel relocation. Either this object is the 1823 application or we are doing a shared symbolic link. */ 1824 1825 eh->plt.offset = (bfd_vma) -1; 1826 eh->needs_plt = 0; 1827 } 1828 1829 return TRUE; 1830 } 1831 else 1832 eh->plt.offset = (bfd_vma) -1; 1833 1834 /* If this is a weak symbol, and there is a real definition, the 1835 processor independent code will have arranged for us to see the 1836 real definition first, and we can just use the same value. */ 1837 if (eh->u.weakdef != NULL) 1838 { 1839 if (eh->u.weakdef->root.type != bfd_link_hash_defined 1840 && eh->u.weakdef->root.type != bfd_link_hash_defweak) 1841 abort (); 1842 eh->root.u.def.section = eh->u.weakdef->root.u.def.section; 1843 eh->root.u.def.value = eh->u.weakdef->root.u.def.value; 1844 if (ELIMINATE_COPY_RELOCS) 1845 eh->non_got_ref = eh->u.weakdef->non_got_ref; 1846 return TRUE; 1847 } 1848 1849 /* This is a reference to a symbol defined by a dynamic object which 1850 is not a function. */ 1851 1852 /* If we are creating a shared library, we must presume that the 1853 only references to the symbol are via the global offset table. 1854 For such cases we need not do anything here; the relocations will 1855 be handled correctly by relocate_section. */ 1856 if (bfd_link_pic (info)) 1857 return TRUE; 1858 1859 /* If there are no references to this symbol that do not use the 1860 GOT, we don't need to generate a copy reloc. */ 1861 if (!eh->non_got_ref) 1862 return TRUE; 1863 1864 if (ELIMINATE_COPY_RELOCS) 1865 { 1866 struct elf32_hppa_link_hash_entry *hh; 1867 struct elf32_hppa_dyn_reloc_entry *hdh_p; 1868 1869 hh = hppa_elf_hash_entry (eh); 1870 for (hdh_p = hh->dyn_relocs; hdh_p != NULL; hdh_p = hdh_p->hdh_next) 1871 { 1872 sec = hdh_p->sec->output_section; 1873 if (sec != NULL && (sec->flags & SEC_READONLY) != 0) 1874 break; 1875 } 1876 1877 /* If we didn't find any dynamic relocs in read-only sections, then 1878 we'll be keeping the dynamic relocs and avoiding the copy reloc. */ 1879 if (hdh_p == NULL) 1880 { 1881 eh->non_got_ref = 0; 1882 return TRUE; 1883 } 1884 } 1885 1886 /* We must allocate the symbol in our .dynbss section, which will 1887 become part of the .bss section of the executable. There will be 1888 an entry for this symbol in the .dynsym section. The dynamic 1889 object will contain position independent code, so all references 1890 from the dynamic object to this symbol will go through the global 1891 offset table. The dynamic linker will use the .dynsym entry to 1892 determine the address it must put in the global offset table, so 1893 both the dynamic object and the regular object will refer to the 1894 same memory location for the variable. */ 1895 1896 htab = hppa_link_hash_table (info); 1897 if (htab == NULL) 1898 return FALSE; 1899 1900 /* We must generate a COPY reloc to tell the dynamic linker to 1901 copy the initial value out of the dynamic object and into the 1902 runtime process image. */ 1903 if ((eh->root.u.def.section->flags & SEC_READONLY) != 0) 1904 { 1905 sec = htab->etab.sdynrelro; 1906 srel = htab->etab.sreldynrelro; 1907 } 1908 else 1909 { 1910 sec = htab->etab.sdynbss; 1911 srel = htab->etab.srelbss; 1912 } 1913 if ((eh->root.u.def.section->flags & SEC_ALLOC) != 0 && eh->size != 0) 1914 { 1915 srel->size += sizeof (Elf32_External_Rela); 1916 eh->needs_copy = 1; 1917 } 1918 1919 return _bfd_elf_adjust_dynamic_copy (info, eh, sec); 1920} 1921 1922/* Make an undefined weak symbol dynamic. */ 1923 1924static bfd_boolean 1925ensure_undef_weak_dynamic (struct bfd_link_info *info, 1926 struct elf_link_hash_entry *eh) 1927{ 1928 if (eh->dynindx == -1 1929 && !eh->forced_local 1930 && eh->type != STT_PARISC_MILLI 1931 && eh->root.type == bfd_link_hash_undefweak 1932 && ELF_ST_VISIBILITY (eh->other) == STV_DEFAULT) 1933 return bfd_elf_link_record_dynamic_symbol (info, eh); 1934 return TRUE; 1935} 1936 1937/* Allocate space in the .plt for entries that won't have relocations. 1938 ie. plabel entries. */ 1939 1940static bfd_boolean 1941allocate_plt_static (struct elf_link_hash_entry *eh, void *inf) 1942{ 1943 struct bfd_link_info *info; 1944 struct elf32_hppa_link_hash_table *htab; 1945 struct elf32_hppa_link_hash_entry *hh; 1946 asection *sec; 1947 1948 if (eh->root.type == bfd_link_hash_indirect) 1949 return TRUE; 1950 1951 info = (struct bfd_link_info *) inf; 1952 hh = hppa_elf_hash_entry (eh); 1953 htab = hppa_link_hash_table (info); 1954 if (htab == NULL) 1955 return FALSE; 1956 1957 if (htab->etab.dynamic_sections_created 1958 && eh->plt.refcount > 0) 1959 { 1960 if (!ensure_undef_weak_dynamic (info, eh)) 1961 return FALSE; 1962 1963 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, bfd_link_pic (info), eh)) 1964 { 1965 /* Allocate these later. From this point on, h->plabel 1966 means that the plt entry is only used by a plabel. 1967 We'll be using a normal plt entry for this symbol, so 1968 clear the plabel indicator. */ 1969 1970 hh->plabel = 0; 1971 } 1972 else if (hh->plabel) 1973 { 1974 /* Make an entry in the .plt section for plabel references 1975 that won't have a .plt entry for other reasons. */ 1976 sec = htab->etab.splt; 1977 eh->plt.offset = sec->size; 1978 sec->size += PLT_ENTRY_SIZE; 1979 if (bfd_link_pic (info)) 1980 htab->etab.srelplt->size += sizeof (Elf32_External_Rela); 1981 } 1982 else 1983 { 1984 /* No .plt entry needed. */ 1985 eh->plt.offset = (bfd_vma) -1; 1986 eh->needs_plt = 0; 1987 } 1988 } 1989 else 1990 { 1991 eh->plt.offset = (bfd_vma) -1; 1992 eh->needs_plt = 0; 1993 } 1994 1995 return TRUE; 1996} 1997 1998/* Allocate space in .plt, .got and associated reloc sections for 1999 global syms. */ 2000 2001static bfd_boolean 2002allocate_dynrelocs (struct elf_link_hash_entry *eh, void *inf) 2003{ 2004 struct bfd_link_info *info; 2005 struct elf32_hppa_link_hash_table *htab; 2006 asection *sec; 2007 struct elf32_hppa_link_hash_entry *hh; 2008 struct elf32_hppa_dyn_reloc_entry *hdh_p; 2009 2010 if (eh->root.type == bfd_link_hash_indirect) 2011 return TRUE; 2012 2013 info = inf; 2014 htab = hppa_link_hash_table (info); 2015 if (htab == NULL) 2016 return FALSE; 2017 2018 hh = hppa_elf_hash_entry (eh); 2019 2020 if (htab->etab.dynamic_sections_created 2021 && eh->plt.offset != (bfd_vma) -1 2022 && !hh->plabel 2023 && eh->plt.refcount > 0) 2024 { 2025 /* Make an entry in the .plt section. */ 2026 sec = htab->etab.splt; 2027 eh->plt.offset = sec->size; 2028 sec->size += PLT_ENTRY_SIZE; 2029 2030 /* We also need to make an entry in the .rela.plt section. */ 2031 htab->etab.srelplt->size += sizeof (Elf32_External_Rela); 2032 htab->need_plt_stub = 1; 2033 } 2034 2035 if (eh->got.refcount > 0) 2036 { 2037 if (!ensure_undef_weak_dynamic (info, eh)) 2038 return FALSE; 2039 2040 sec = htab->etab.sgot; 2041 eh->got.offset = sec->size; 2042 sec->size += GOT_ENTRY_SIZE; 2043 /* R_PARISC_TLS_GD* needs two GOT entries */ 2044 if ((hh->tls_type & (GOT_TLS_GD | GOT_TLS_IE)) == (GOT_TLS_GD | GOT_TLS_IE)) 2045 sec->size += GOT_ENTRY_SIZE * 2; 2046 else if ((hh->tls_type & GOT_TLS_GD) == GOT_TLS_GD) 2047 sec->size += GOT_ENTRY_SIZE; 2048 if (htab->etab.dynamic_sections_created 2049 && (bfd_link_pic (info) 2050 || (eh->dynindx != -1 2051 && !eh->forced_local))) 2052 { 2053 htab->etab.srelgot->size += sizeof (Elf32_External_Rela); 2054 if ((hh->tls_type & (GOT_TLS_GD | GOT_TLS_IE)) == (GOT_TLS_GD | GOT_TLS_IE)) 2055 htab->etab.srelgot->size += 2 * sizeof (Elf32_External_Rela); 2056 else if ((hh->tls_type & GOT_TLS_GD) == GOT_TLS_GD) 2057 htab->etab.srelgot->size += sizeof (Elf32_External_Rela); 2058 } 2059 } 2060 else 2061 eh->got.offset = (bfd_vma) -1; 2062 2063 if (hh->dyn_relocs == NULL) 2064 return TRUE; 2065 2066 /* If this is a -Bsymbolic shared link, then we need to discard all 2067 space allocated for dynamic pc-relative relocs against symbols 2068 defined in a regular object. For the normal shared case, discard 2069 space for relocs that have become local due to symbol visibility 2070 changes. */ 2071 if (bfd_link_pic (info)) 2072 { 2073#if RELATIVE_DYNRELOCS 2074 if (SYMBOL_CALLS_LOCAL (info, eh)) 2075 { 2076 struct elf32_hppa_dyn_reloc_entry **hdh_pp; 2077 2078 for (hdh_pp = &hh->dyn_relocs; (hdh_p = *hdh_pp) != NULL; ) 2079 { 2080 hdh_p->count -= hdh_p->relative_count; 2081 hdh_p->relative_count = 0; 2082 if (hdh_p->count == 0) 2083 *hdh_pp = hdh_p->hdh_next; 2084 else 2085 hdh_pp = &hdh_p->hdh_next; 2086 } 2087 } 2088#endif 2089 2090 /* Also discard relocs on undefined weak syms with non-default 2091 visibility. */ 2092 if (hh->dyn_relocs != NULL 2093 && eh->root.type == bfd_link_hash_undefweak) 2094 { 2095 if (ELF_ST_VISIBILITY (eh->other) != STV_DEFAULT) 2096 hh->dyn_relocs = NULL; 2097 2098 else if (!ensure_undef_weak_dynamic (info, eh)) 2099 return FALSE; 2100 } 2101 } 2102 else 2103 { 2104 /* For the non-shared case, discard space for relocs against 2105 symbols which turn out to need copy relocs or are not 2106 dynamic. */ 2107 2108 if (!eh->non_got_ref 2109 && ((ELIMINATE_COPY_RELOCS 2110 && eh->def_dynamic 2111 && !eh->def_regular) 2112 || (htab->etab.dynamic_sections_created 2113 && (eh->root.type == bfd_link_hash_undefweak 2114 || eh->root.type == bfd_link_hash_undefined)))) 2115 { 2116 if (!ensure_undef_weak_dynamic (info, eh)) 2117 return FALSE; 2118 2119 /* If that succeeded, we know we'll be keeping all the 2120 relocs. */ 2121 if (eh->dynindx != -1) 2122 goto keep; 2123 } 2124 2125 hh->dyn_relocs = NULL; 2126 return TRUE; 2127 2128 keep: ; 2129 } 2130 2131 /* Finally, allocate space. */ 2132 for (hdh_p = hh->dyn_relocs; hdh_p != NULL; hdh_p = hdh_p->hdh_next) 2133 { 2134 asection *sreloc = elf_section_data (hdh_p->sec)->sreloc; 2135 sreloc->size += hdh_p->count * sizeof (Elf32_External_Rela); 2136 } 2137 2138 return TRUE; 2139} 2140 2141/* This function is called via elf_link_hash_traverse to force 2142 millicode symbols local so they do not end up as globals in the 2143 dynamic symbol table. We ought to be able to do this in 2144 adjust_dynamic_symbol, but our adjust_dynamic_symbol is not called 2145 for all dynamic symbols. Arguably, this is a bug in 2146 elf_adjust_dynamic_symbol. */ 2147 2148static bfd_boolean 2149clobber_millicode_symbols (struct elf_link_hash_entry *eh, 2150 struct bfd_link_info *info) 2151{ 2152 if (eh->type == STT_PARISC_MILLI 2153 && !eh->forced_local) 2154 { 2155 elf32_hppa_hide_symbol (info, eh, TRUE); 2156 } 2157 return TRUE; 2158} 2159 2160/* Find any dynamic relocs that apply to read-only sections. */ 2161 2162static bfd_boolean 2163readonly_dynrelocs (struct elf_link_hash_entry *eh, void *inf) 2164{ 2165 struct elf32_hppa_link_hash_entry *hh; 2166 struct elf32_hppa_dyn_reloc_entry *hdh_p; 2167 2168 hh = hppa_elf_hash_entry (eh); 2169 for (hdh_p = hh->dyn_relocs; hdh_p != NULL; hdh_p = hdh_p->hdh_next) 2170 { 2171 asection *sec = hdh_p->sec->output_section; 2172 2173 if (sec != NULL && (sec->flags & SEC_READONLY) != 0) 2174 { 2175 struct bfd_link_info *info = inf; 2176 2177 info->flags |= DF_TEXTREL; 2178 2179 /* Not an error, just cut short the traversal. */ 2180 return FALSE; 2181 } 2182 } 2183 return TRUE; 2184} 2185 2186/* Set the sizes of the dynamic sections. */ 2187 2188static bfd_boolean 2189elf32_hppa_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED, 2190 struct bfd_link_info *info) 2191{ 2192 struct elf32_hppa_link_hash_table *htab; 2193 bfd *dynobj; 2194 bfd *ibfd; 2195 asection *sec; 2196 bfd_boolean relocs; 2197 2198 htab = hppa_link_hash_table (info); 2199 if (htab == NULL) 2200 return FALSE; 2201 2202 dynobj = htab->etab.dynobj; 2203 if (dynobj == NULL) 2204 abort (); 2205 2206 if (htab->etab.dynamic_sections_created) 2207 { 2208 /* Set the contents of the .interp section to the interpreter. */ 2209 if (bfd_link_executable (info) && !info->nointerp) 2210 { 2211 sec = bfd_get_linker_section (dynobj, ".interp"); 2212 if (sec == NULL) 2213 abort (); 2214 sec->size = sizeof ELF_DYNAMIC_INTERPRETER; 2215 sec->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER; 2216 } 2217 2218 /* Force millicode symbols local. */ 2219 elf_link_hash_traverse (&htab->etab, 2220 clobber_millicode_symbols, 2221 info); 2222 } 2223 2224 /* Set up .got and .plt offsets for local syms, and space for local 2225 dynamic relocs. */ 2226 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) 2227 { 2228 bfd_signed_vma *local_got; 2229 bfd_signed_vma *end_local_got; 2230 bfd_signed_vma *local_plt; 2231 bfd_signed_vma *end_local_plt; 2232 bfd_size_type locsymcount; 2233 Elf_Internal_Shdr *symtab_hdr; 2234 asection *srel; 2235 char *local_tls_type; 2236 2237 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour) 2238 continue; 2239 2240 for (sec = ibfd->sections; sec != NULL; sec = sec->next) 2241 { 2242 struct elf32_hppa_dyn_reloc_entry *hdh_p; 2243 2244 for (hdh_p = ((struct elf32_hppa_dyn_reloc_entry *) 2245 elf_section_data (sec)->local_dynrel); 2246 hdh_p != NULL; 2247 hdh_p = hdh_p->hdh_next) 2248 { 2249 if (!bfd_is_abs_section (hdh_p->sec) 2250 && bfd_is_abs_section (hdh_p->sec->output_section)) 2251 { 2252 /* Input section has been discarded, either because 2253 it is a copy of a linkonce section or due to 2254 linker script /DISCARD/, so we'll be discarding 2255 the relocs too. */ 2256 } 2257 else if (hdh_p->count != 0) 2258 { 2259 srel = elf_section_data (hdh_p->sec)->sreloc; 2260 srel->size += hdh_p->count * sizeof (Elf32_External_Rela); 2261 if ((hdh_p->sec->output_section->flags & SEC_READONLY) != 0) 2262 info->flags |= DF_TEXTREL; 2263 } 2264 } 2265 } 2266 2267 local_got = elf_local_got_refcounts (ibfd); 2268 if (!local_got) 2269 continue; 2270 2271 symtab_hdr = &elf_tdata (ibfd)->symtab_hdr; 2272 locsymcount = symtab_hdr->sh_info; 2273 end_local_got = local_got + locsymcount; 2274 local_tls_type = hppa_elf_local_got_tls_type (ibfd); 2275 sec = htab->etab.sgot; 2276 srel = htab->etab.srelgot; 2277 for (; local_got < end_local_got; ++local_got) 2278 { 2279 if (*local_got > 0) 2280 { 2281 *local_got = sec->size; 2282 sec->size += GOT_ENTRY_SIZE; 2283 if ((*local_tls_type & (GOT_TLS_GD | GOT_TLS_IE)) == (GOT_TLS_GD | GOT_TLS_IE)) 2284 sec->size += 2 * GOT_ENTRY_SIZE; 2285 else if ((*local_tls_type & GOT_TLS_GD) == GOT_TLS_GD) 2286 sec->size += GOT_ENTRY_SIZE; 2287 if (bfd_link_pic (info)) 2288 { 2289 srel->size += sizeof (Elf32_External_Rela); 2290 if ((*local_tls_type & (GOT_TLS_GD | GOT_TLS_IE)) == (GOT_TLS_GD | GOT_TLS_IE)) 2291 srel->size += 2 * sizeof (Elf32_External_Rela); 2292 else if ((*local_tls_type & GOT_TLS_GD) == GOT_TLS_GD) 2293 srel->size += sizeof (Elf32_External_Rela); 2294 } 2295 } 2296 else 2297 *local_got = (bfd_vma) -1; 2298 2299 ++local_tls_type; 2300 } 2301 2302 local_plt = end_local_got; 2303 end_local_plt = local_plt + locsymcount; 2304 if (! htab->etab.dynamic_sections_created) 2305 { 2306 /* Won't be used, but be safe. */ 2307 for (; local_plt < end_local_plt; ++local_plt) 2308 *local_plt = (bfd_vma) -1; 2309 } 2310 else 2311 { 2312 sec = htab->etab.splt; 2313 srel = htab->etab.srelplt; 2314 for (; local_plt < end_local_plt; ++local_plt) 2315 { 2316 if (*local_plt > 0) 2317 { 2318 *local_plt = sec->size; 2319 sec->size += PLT_ENTRY_SIZE; 2320 if (bfd_link_pic (info)) 2321 srel->size += sizeof (Elf32_External_Rela); 2322 } 2323 else 2324 *local_plt = (bfd_vma) -1; 2325 } 2326 } 2327 } 2328 2329 if (htab->tls_ldm_got.refcount > 0) 2330 { 2331 /* Allocate 2 got entries and 1 dynamic reloc for 2332 R_PARISC_TLS_DTPMOD32 relocs. */ 2333 htab->tls_ldm_got.offset = htab->etab.sgot->size; 2334 htab->etab.sgot->size += (GOT_ENTRY_SIZE * 2); 2335 htab->etab.srelgot->size += sizeof (Elf32_External_Rela); 2336 } 2337 else 2338 htab->tls_ldm_got.offset = -1; 2339 2340 /* Do all the .plt entries without relocs first. The dynamic linker 2341 uses the last .plt reloc to find the end of the .plt (and hence 2342 the start of the .got) for lazy linking. */ 2343 elf_link_hash_traverse (&htab->etab, allocate_plt_static, info); 2344 2345 /* Allocate global sym .plt and .got entries, and space for global 2346 sym dynamic relocs. */ 2347 elf_link_hash_traverse (&htab->etab, allocate_dynrelocs, info); 2348 2349 /* The check_relocs and adjust_dynamic_symbol entry points have 2350 determined the sizes of the various dynamic sections. Allocate 2351 memory for them. */ 2352 relocs = FALSE; 2353 for (sec = dynobj->sections; sec != NULL; sec = sec->next) 2354 { 2355 if ((sec->flags & SEC_LINKER_CREATED) == 0) 2356 continue; 2357 2358 if (sec == htab->etab.splt) 2359 { 2360 if (htab->need_plt_stub) 2361 { 2362 /* Make space for the plt stub at the end of the .plt 2363 section. We want this stub right at the end, up 2364 against the .got section. */ 2365 int gotalign = bfd_section_alignment (dynobj, htab->etab.sgot); 2366 int pltalign = bfd_section_alignment (dynobj, sec); 2367 bfd_size_type mask; 2368 2369 if (gotalign > pltalign) 2370 (void) bfd_set_section_alignment (dynobj, sec, gotalign); 2371 mask = ((bfd_size_type) 1 << gotalign) - 1; 2372 sec->size = (sec->size + sizeof (plt_stub) + mask) & ~mask; 2373 } 2374 } 2375 else if (sec == htab->etab.sgot 2376 || sec == htab->etab.sdynbss 2377 || sec == htab->etab.sdynrelro) 2378 ; 2379 else if (CONST_STRNEQ (bfd_get_section_name (dynobj, sec), ".rela")) 2380 { 2381 if (sec->size != 0) 2382 { 2383 /* Remember whether there are any reloc sections other 2384 than .rela.plt. */ 2385 if (sec != htab->etab.srelplt) 2386 relocs = TRUE; 2387 2388 /* We use the reloc_count field as a counter if we need 2389 to copy relocs into the output file. */ 2390 sec->reloc_count = 0; 2391 } 2392 } 2393 else 2394 { 2395 /* It's not one of our sections, so don't allocate space. */ 2396 continue; 2397 } 2398 2399 if (sec->size == 0) 2400 { 2401 /* If we don't need this section, strip it from the 2402 output file. This is mostly to handle .rela.bss and 2403 .rela.plt. We must create both sections in 2404 create_dynamic_sections, because they must be created 2405 before the linker maps input sections to output 2406 sections. The linker does that before 2407 adjust_dynamic_symbol is called, and it is that 2408 function which decides whether anything needs to go 2409 into these sections. */ 2410 sec->flags |= SEC_EXCLUDE; 2411 continue; 2412 } 2413 2414 if ((sec->flags & SEC_HAS_CONTENTS) == 0) 2415 continue; 2416 2417 /* Allocate memory for the section contents. Zero it, because 2418 we may not fill in all the reloc sections. */ 2419 sec->contents = bfd_zalloc (dynobj, sec->size); 2420 if (sec->contents == NULL) 2421 return FALSE; 2422 } 2423 2424 if (htab->etab.dynamic_sections_created) 2425 { 2426 /* Like IA-64 and HPPA64, always create a DT_PLTGOT. It 2427 actually has nothing to do with the PLT, it is how we 2428 communicate the LTP value of a load module to the dynamic 2429 linker. */ 2430#define add_dynamic_entry(TAG, VAL) \ 2431 _bfd_elf_add_dynamic_entry (info, TAG, VAL) 2432 2433 if (!add_dynamic_entry (DT_PLTGOT, 0)) 2434 return FALSE; 2435 2436 /* Add some entries to the .dynamic section. We fill in the 2437 values later, in elf32_hppa_finish_dynamic_sections, but we 2438 must add the entries now so that we get the correct size for 2439 the .dynamic section. The DT_DEBUG entry is filled in by the 2440 dynamic linker and used by the debugger. */ 2441 if (bfd_link_executable (info)) 2442 { 2443 if (!add_dynamic_entry (DT_DEBUG, 0)) 2444 return FALSE; 2445 } 2446 2447 if (htab->etab.srelplt->size != 0) 2448 { 2449 if (!add_dynamic_entry (DT_PLTRELSZ, 0) 2450 || !add_dynamic_entry (DT_PLTREL, DT_RELA) 2451 || !add_dynamic_entry (DT_JMPREL, 0)) 2452 return FALSE; 2453 } 2454 2455 if (relocs) 2456 { 2457 if (!add_dynamic_entry (DT_RELA, 0) 2458 || !add_dynamic_entry (DT_RELASZ, 0) 2459 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf32_External_Rela))) 2460 return FALSE; 2461 2462 /* If any dynamic relocs apply to a read-only section, 2463 then we need a DT_TEXTREL entry. */ 2464 if ((info->flags & DF_TEXTREL) == 0) 2465 elf_link_hash_traverse (&htab->etab, readonly_dynrelocs, info); 2466 2467 if ((info->flags & DF_TEXTREL) != 0) 2468 { 2469 if (!add_dynamic_entry (DT_TEXTREL, 0)) 2470 return FALSE; 2471 } 2472 } 2473 } 2474#undef add_dynamic_entry 2475 2476 return TRUE; 2477} 2478 2479/* External entry points for sizing and building linker stubs. */ 2480 2481/* Set up various things so that we can make a list of input sections 2482 for each output section included in the link. Returns -1 on error, 2483 0 when no stubs will be needed, and 1 on success. */ 2484 2485int 2486elf32_hppa_setup_section_lists (bfd *output_bfd, struct bfd_link_info *info) 2487{ 2488 bfd *input_bfd; 2489 unsigned int bfd_count; 2490 unsigned int top_id, top_index; 2491 asection *section; 2492 asection **input_list, **list; 2493 bfd_size_type amt; 2494 struct elf32_hppa_link_hash_table *htab = hppa_link_hash_table (info); 2495 2496 if (htab == NULL) 2497 return -1; 2498 2499 /* Count the number of input BFDs and find the top input section id. */ 2500 for (input_bfd = info->input_bfds, bfd_count = 0, top_id = 0; 2501 input_bfd != NULL; 2502 input_bfd = input_bfd->link.next) 2503 { 2504 bfd_count += 1; 2505 for (section = input_bfd->sections; 2506 section != NULL; 2507 section = section->next) 2508 { 2509 if (top_id < section->id) 2510 top_id = section->id; 2511 } 2512 } 2513 htab->bfd_count = bfd_count; 2514 2515 amt = sizeof (struct map_stub) * (top_id + 1); 2516 htab->stub_group = bfd_zmalloc (amt); 2517 if (htab->stub_group == NULL) 2518 return -1; 2519 2520 /* We can't use output_bfd->section_count here to find the top output 2521 section index as some sections may have been removed, and 2522 strip_excluded_output_sections doesn't renumber the indices. */ 2523 for (section = output_bfd->sections, top_index = 0; 2524 section != NULL; 2525 section = section->next) 2526 { 2527 if (top_index < section->index) 2528 top_index = section->index; 2529 } 2530 2531 htab->top_index = top_index; 2532 amt = sizeof (asection *) * (top_index + 1); 2533 input_list = bfd_malloc (amt); 2534 htab->input_list = input_list; 2535 if (input_list == NULL) 2536 return -1; 2537 2538 /* For sections we aren't interested in, mark their entries with a 2539 value we can check later. */ 2540 list = input_list + top_index; 2541 do 2542 *list = bfd_abs_section_ptr; 2543 while (list-- != input_list); 2544 2545 for (section = output_bfd->sections; 2546 section != NULL; 2547 section = section->next) 2548 { 2549 if ((section->flags & SEC_CODE) != 0) 2550 input_list[section->index] = NULL; 2551 } 2552 2553 return 1; 2554} 2555 2556/* The linker repeatedly calls this function for each input section, 2557 in the order that input sections are linked into output sections. 2558 Build lists of input sections to determine groupings between which 2559 we may insert linker stubs. */ 2560 2561void 2562elf32_hppa_next_input_section (struct bfd_link_info *info, asection *isec) 2563{ 2564 struct elf32_hppa_link_hash_table *htab = hppa_link_hash_table (info); 2565 2566 if (htab == NULL) 2567 return; 2568 2569 if (isec->output_section->index <= htab->top_index) 2570 { 2571 asection **list = htab->input_list + isec->output_section->index; 2572 if (*list != bfd_abs_section_ptr) 2573 { 2574 /* Steal the link_sec pointer for our list. */ 2575#define PREV_SEC(sec) (htab->stub_group[(sec)->id].link_sec) 2576 /* This happens to make the list in reverse order, 2577 which is what we want. */ 2578 PREV_SEC (isec) = *list; 2579 *list = isec; 2580 } 2581 } 2582} 2583 2584/* See whether we can group stub sections together. Grouping stub 2585 sections may result in fewer stubs. More importantly, we need to 2586 put all .init* and .fini* stubs at the beginning of the .init or 2587 .fini output sections respectively, because glibc splits the 2588 _init and _fini functions into multiple parts. Putting a stub in 2589 the middle of a function is not a good idea. */ 2590 2591static void 2592group_sections (struct elf32_hppa_link_hash_table *htab, 2593 bfd_size_type stub_group_size, 2594 bfd_boolean stubs_always_before_branch) 2595{ 2596 asection **list = htab->input_list + htab->top_index; 2597 do 2598 { 2599 asection *tail = *list; 2600 if (tail == bfd_abs_section_ptr) 2601 continue; 2602 while (tail != NULL) 2603 { 2604 asection *curr; 2605 asection *prev; 2606 bfd_size_type total; 2607 bfd_boolean big_sec; 2608 2609 curr = tail; 2610 total = tail->size; 2611 big_sec = total >= stub_group_size; 2612 2613 while ((prev = PREV_SEC (curr)) != NULL 2614 && ((total += curr->output_offset - prev->output_offset) 2615 < stub_group_size)) 2616 curr = prev; 2617 2618 /* OK, the size from the start of CURR to the end is less 2619 than 240000 bytes and thus can be handled by one stub 2620 section. (or the tail section is itself larger than 2621 240000 bytes, in which case we may be toast.) 2622 We should really be keeping track of the total size of 2623 stubs added here, as stubs contribute to the final output 2624 section size. That's a little tricky, and this way will 2625 only break if stubs added total more than 22144 bytes, or 2626 2768 long branch stubs. It seems unlikely for more than 2627 2768 different functions to be called, especially from 2628 code only 240000 bytes long. This limit used to be 2629 250000, but c++ code tends to generate lots of little 2630 functions, and sometimes violated the assumption. */ 2631 do 2632 { 2633 prev = PREV_SEC (tail); 2634 /* Set up this stub group. */ 2635 htab->stub_group[tail->id].link_sec = curr; 2636 } 2637 while (tail != curr && (tail = prev) != NULL); 2638 2639 /* But wait, there's more! Input sections up to 240000 2640 bytes before the stub section can be handled by it too. 2641 Don't do this if we have a really large section after the 2642 stubs, as adding more stubs increases the chance that 2643 branches may not reach into the stub section. */ 2644 if (!stubs_always_before_branch && !big_sec) 2645 { 2646 total = 0; 2647 while (prev != NULL 2648 && ((total += tail->output_offset - prev->output_offset) 2649 < stub_group_size)) 2650 { 2651 tail = prev; 2652 prev = PREV_SEC (tail); 2653 htab->stub_group[tail->id].link_sec = curr; 2654 } 2655 } 2656 tail = prev; 2657 } 2658 } 2659 while (list-- != htab->input_list); 2660 free (htab->input_list); 2661#undef PREV_SEC 2662} 2663 2664/* Read in all local syms for all input bfds, and create hash entries 2665 for export stubs if we are building a multi-subspace shared lib. 2666 Returns -1 on error, 1 if export stubs created, 0 otherwise. */ 2667 2668static int 2669get_local_syms (bfd *output_bfd, bfd *input_bfd, struct bfd_link_info *info) 2670{ 2671 unsigned int bfd_indx; 2672 Elf_Internal_Sym *local_syms, **all_local_syms; 2673 int stub_changed = 0; 2674 struct elf32_hppa_link_hash_table *htab = hppa_link_hash_table (info); 2675 2676 if (htab == NULL) 2677 return -1; 2678 2679 /* We want to read in symbol extension records only once. To do this 2680 we need to read in the local symbols in parallel and save them for 2681 later use; so hold pointers to the local symbols in an array. */ 2682 bfd_size_type amt = sizeof (Elf_Internal_Sym *) * htab->bfd_count; 2683 all_local_syms = bfd_zmalloc (amt); 2684 htab->all_local_syms = all_local_syms; 2685 if (all_local_syms == NULL) 2686 return -1; 2687 2688 /* Walk over all the input BFDs, swapping in local symbols. 2689 If we are creating a shared library, create hash entries for the 2690 export stubs. */ 2691 for (bfd_indx = 0; 2692 input_bfd != NULL; 2693 input_bfd = input_bfd->link.next, bfd_indx++) 2694 { 2695 Elf_Internal_Shdr *symtab_hdr; 2696 2697 /* We'll need the symbol table in a second. */ 2698 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; 2699 if (symtab_hdr->sh_info == 0) 2700 continue; 2701 2702 /* We need an array of the local symbols attached to the input bfd. */ 2703 local_syms = (Elf_Internal_Sym *) symtab_hdr->contents; 2704 if (local_syms == NULL) 2705 { 2706 local_syms = bfd_elf_get_elf_syms (input_bfd, symtab_hdr, 2707 symtab_hdr->sh_info, 0, 2708 NULL, NULL, NULL); 2709 /* Cache them for elf_link_input_bfd. */ 2710 symtab_hdr->contents = (unsigned char *) local_syms; 2711 } 2712 if (local_syms == NULL) 2713 return -1; 2714 2715 all_local_syms[bfd_indx] = local_syms; 2716 2717 if (bfd_link_pic (info) && htab->multi_subspace) 2718 { 2719 struct elf_link_hash_entry **eh_syms; 2720 struct elf_link_hash_entry **eh_symend; 2721 unsigned int symcount; 2722 2723 symcount = (symtab_hdr->sh_size / sizeof (Elf32_External_Sym) 2724 - symtab_hdr->sh_info); 2725 eh_syms = (struct elf_link_hash_entry **) elf_sym_hashes (input_bfd); 2726 eh_symend = (struct elf_link_hash_entry **) (eh_syms + symcount); 2727 2728 /* Look through the global syms for functions; We need to 2729 build export stubs for all globally visible functions. */ 2730 for (; eh_syms < eh_symend; eh_syms++) 2731 { 2732 struct elf32_hppa_link_hash_entry *hh; 2733 2734 hh = hppa_elf_hash_entry (*eh_syms); 2735 2736 while (hh->eh.root.type == bfd_link_hash_indirect 2737 || hh->eh.root.type == bfd_link_hash_warning) 2738 hh = hppa_elf_hash_entry (hh->eh.root.u.i.link); 2739 2740 /* At this point in the link, undefined syms have been 2741 resolved, so we need to check that the symbol was 2742 defined in this BFD. */ 2743 if ((hh->eh.root.type == bfd_link_hash_defined 2744 || hh->eh.root.type == bfd_link_hash_defweak) 2745 && hh->eh.type == STT_FUNC 2746 && hh->eh.root.u.def.section->output_section != NULL 2747 && (hh->eh.root.u.def.section->output_section->owner 2748 == output_bfd) 2749 && hh->eh.root.u.def.section->owner == input_bfd 2750 && hh->eh.def_regular 2751 && !hh->eh.forced_local 2752 && ELF_ST_VISIBILITY (hh->eh.other) == STV_DEFAULT) 2753 { 2754 asection *sec; 2755 const char *stub_name; 2756 struct elf32_hppa_stub_hash_entry *hsh; 2757 2758 sec = hh->eh.root.u.def.section; 2759 stub_name = hh_name (hh); 2760 hsh = hppa_stub_hash_lookup (&htab->bstab, 2761 stub_name, 2762 FALSE, FALSE); 2763 if (hsh == NULL) 2764 { 2765 hsh = hppa_add_stub (stub_name, sec, htab); 2766 if (!hsh) 2767 return -1; 2768 2769 hsh->target_value = hh->eh.root.u.def.value; 2770 hsh->target_section = hh->eh.root.u.def.section; 2771 hsh->stub_type = hppa_stub_export; 2772 hsh->hh = hh; 2773 stub_changed = 1; 2774 } 2775 else 2776 { 2777 /* xgettext:c-format */ 2778 _bfd_error_handler (_("%B: duplicate export stub %s"), 2779 input_bfd, stub_name); 2780 } 2781 } 2782 } 2783 } 2784 } 2785 2786 return stub_changed; 2787} 2788 2789/* Determine and set the size of the stub section for a final link. 2790 2791 The basic idea here is to examine all the relocations looking for 2792 PC-relative calls to a target that is unreachable with a "bl" 2793 instruction. */ 2794 2795bfd_boolean 2796elf32_hppa_size_stubs 2797 (bfd *output_bfd, bfd *stub_bfd, struct bfd_link_info *info, 2798 bfd_boolean multi_subspace, bfd_signed_vma group_size, 2799 asection * (*add_stub_section) (const char *, asection *), 2800 void (*layout_sections_again) (void)) 2801{ 2802 bfd_size_type stub_group_size; 2803 bfd_boolean stubs_always_before_branch; 2804 bfd_boolean stub_changed; 2805 struct elf32_hppa_link_hash_table *htab = hppa_link_hash_table (info); 2806 2807 if (htab == NULL) 2808 return FALSE; 2809 2810 /* Stash our params away. */ 2811 htab->stub_bfd = stub_bfd; 2812 htab->multi_subspace = multi_subspace; 2813 htab->add_stub_section = add_stub_section; 2814 htab->layout_sections_again = layout_sections_again; 2815 stubs_always_before_branch = group_size < 0; 2816 if (group_size < 0) 2817 stub_group_size = -group_size; 2818 else 2819 stub_group_size = group_size; 2820 if (stub_group_size == 1) 2821 { 2822 /* Default values. */ 2823 if (stubs_always_before_branch) 2824 { 2825 stub_group_size = 7680000; 2826 if (htab->has_17bit_branch || htab->multi_subspace) 2827 stub_group_size = 240000; 2828 if (htab->has_12bit_branch) 2829 stub_group_size = 7500; 2830 } 2831 else 2832 { 2833 stub_group_size = 6971392; 2834 if (htab->has_17bit_branch || htab->multi_subspace) 2835 stub_group_size = 217856; 2836 if (htab->has_12bit_branch) 2837 stub_group_size = 6808; 2838 } 2839 } 2840 2841 group_sections (htab, stub_group_size, stubs_always_before_branch); 2842 2843 switch (get_local_syms (output_bfd, info->input_bfds, info)) 2844 { 2845 default: 2846 if (htab->all_local_syms) 2847 goto error_ret_free_local; 2848 return FALSE; 2849 2850 case 0: 2851 stub_changed = FALSE; 2852 break; 2853 2854 case 1: 2855 stub_changed = TRUE; 2856 break; 2857 } 2858 2859 while (1) 2860 { 2861 bfd *input_bfd; 2862 unsigned int bfd_indx; 2863 asection *stub_sec; 2864 2865 for (input_bfd = info->input_bfds, bfd_indx = 0; 2866 input_bfd != NULL; 2867 input_bfd = input_bfd->link.next, bfd_indx++) 2868 { 2869 Elf_Internal_Shdr *symtab_hdr; 2870 asection *section; 2871 Elf_Internal_Sym *local_syms; 2872 2873 /* We'll need the symbol table in a second. */ 2874 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; 2875 if (symtab_hdr->sh_info == 0) 2876 continue; 2877 2878 local_syms = htab->all_local_syms[bfd_indx]; 2879 2880 /* Walk over each section attached to the input bfd. */ 2881 for (section = input_bfd->sections; 2882 section != NULL; 2883 section = section->next) 2884 { 2885 Elf_Internal_Rela *internal_relocs, *irelaend, *irela; 2886 2887 /* If there aren't any relocs, then there's nothing more 2888 to do. */ 2889 if ((section->flags & SEC_RELOC) == 0 2890 || section->reloc_count == 0) 2891 continue; 2892 2893 /* If this section is a link-once section that will be 2894 discarded, then don't create any stubs. */ 2895 if (section->output_section == NULL 2896 || section->output_section->owner != output_bfd) 2897 continue; 2898 2899 /* Get the relocs. */ 2900 internal_relocs 2901 = _bfd_elf_link_read_relocs (input_bfd, section, NULL, NULL, 2902 info->keep_memory); 2903 if (internal_relocs == NULL) 2904 goto error_ret_free_local; 2905 2906 /* Now examine each relocation. */ 2907 irela = internal_relocs; 2908 irelaend = irela + section->reloc_count; 2909 for (; irela < irelaend; irela++) 2910 { 2911 unsigned int r_type, r_indx; 2912 enum elf32_hppa_stub_type stub_type; 2913 struct elf32_hppa_stub_hash_entry *hsh; 2914 asection *sym_sec; 2915 bfd_vma sym_value; 2916 bfd_vma destination; 2917 struct elf32_hppa_link_hash_entry *hh; 2918 char *stub_name; 2919 const asection *id_sec; 2920 2921 r_type = ELF32_R_TYPE (irela->r_info); 2922 r_indx = ELF32_R_SYM (irela->r_info); 2923 2924 if (r_type >= (unsigned int) R_PARISC_UNIMPLEMENTED) 2925 { 2926 bfd_set_error (bfd_error_bad_value); 2927 error_ret_free_internal: 2928 if (elf_section_data (section)->relocs == NULL) 2929 free (internal_relocs); 2930 goto error_ret_free_local; 2931 } 2932 2933 /* Only look for stubs on call instructions. */ 2934 if (r_type != (unsigned int) R_PARISC_PCREL12F 2935 && r_type != (unsigned int) R_PARISC_PCREL17F 2936 && r_type != (unsigned int) R_PARISC_PCREL22F) 2937 continue; 2938 2939 /* Now determine the call target, its name, value, 2940 section. */ 2941 sym_sec = NULL; 2942 sym_value = 0; 2943 destination = 0; 2944 hh = NULL; 2945 if (r_indx < symtab_hdr->sh_info) 2946 { 2947 /* It's a local symbol. */ 2948 Elf_Internal_Sym *sym; 2949 Elf_Internal_Shdr *hdr; 2950 unsigned int shndx; 2951 2952 sym = local_syms + r_indx; 2953 if (ELF_ST_TYPE (sym->st_info) != STT_SECTION) 2954 sym_value = sym->st_value; 2955 shndx = sym->st_shndx; 2956 if (shndx < elf_numsections (input_bfd)) 2957 { 2958 hdr = elf_elfsections (input_bfd)[shndx]; 2959 sym_sec = hdr->bfd_section; 2960 destination = (sym_value + irela->r_addend 2961 + sym_sec->output_offset 2962 + sym_sec->output_section->vma); 2963 } 2964 } 2965 else 2966 { 2967 /* It's an external symbol. */ 2968 int e_indx; 2969 2970 e_indx = r_indx - symtab_hdr->sh_info; 2971 hh = hppa_elf_hash_entry (elf_sym_hashes (input_bfd)[e_indx]); 2972 2973 while (hh->eh.root.type == bfd_link_hash_indirect 2974 || hh->eh.root.type == bfd_link_hash_warning) 2975 hh = hppa_elf_hash_entry (hh->eh.root.u.i.link); 2976 2977 if (hh->eh.root.type == bfd_link_hash_defined 2978 || hh->eh.root.type == bfd_link_hash_defweak) 2979 { 2980 sym_sec = hh->eh.root.u.def.section; 2981 sym_value = hh->eh.root.u.def.value; 2982 if (sym_sec->output_section != NULL) 2983 destination = (sym_value + irela->r_addend 2984 + sym_sec->output_offset 2985 + sym_sec->output_section->vma); 2986 } 2987 else if (hh->eh.root.type == bfd_link_hash_undefweak) 2988 { 2989 if (! bfd_link_pic (info)) 2990 continue; 2991 } 2992 else if (hh->eh.root.type == bfd_link_hash_undefined) 2993 { 2994 if (! (info->unresolved_syms_in_objects == RM_IGNORE 2995 && (ELF_ST_VISIBILITY (hh->eh.other) 2996 == STV_DEFAULT) 2997 && hh->eh.type != STT_PARISC_MILLI)) 2998 continue; 2999 } 3000 else 3001 { 3002 bfd_set_error (bfd_error_bad_value); 3003 goto error_ret_free_internal; 3004 } 3005 } 3006 3007 /* Determine what (if any) linker stub is needed. */ 3008 stub_type = hppa_type_of_stub (section, irela, hh, 3009 destination, info); 3010 if (stub_type == hppa_stub_none) 3011 continue; 3012 3013 /* Support for grouping stub sections. */ 3014 id_sec = htab->stub_group[section->id].link_sec; 3015 3016 /* Get the name of this stub. */ 3017 stub_name = hppa_stub_name (id_sec, sym_sec, hh, irela); 3018 if (!stub_name) 3019 goto error_ret_free_internal; 3020 3021 hsh = hppa_stub_hash_lookup (&htab->bstab, 3022 stub_name, 3023 FALSE, FALSE); 3024 if (hsh != NULL) 3025 { 3026 /* The proper stub has already been created. */ 3027 free (stub_name); 3028 continue; 3029 } 3030 3031 hsh = hppa_add_stub (stub_name, section, htab); 3032 if (hsh == NULL) 3033 { 3034 free (stub_name); 3035 goto error_ret_free_internal; 3036 } 3037 3038 hsh->target_value = sym_value; 3039 hsh->target_section = sym_sec; 3040 hsh->stub_type = stub_type; 3041 if (bfd_link_pic (info)) 3042 { 3043 if (stub_type == hppa_stub_import) 3044 hsh->stub_type = hppa_stub_import_shared; 3045 else if (stub_type == hppa_stub_long_branch) 3046 hsh->stub_type = hppa_stub_long_branch_shared; 3047 } 3048 hsh->hh = hh; 3049 stub_changed = TRUE; 3050 } 3051 3052 /* We're done with the internal relocs, free them. */ 3053 if (elf_section_data (section)->relocs == NULL) 3054 free (internal_relocs); 3055 } 3056 } 3057 3058 if (!stub_changed) 3059 break; 3060 3061 /* OK, we've added some stubs. Find out the new size of the 3062 stub sections. */ 3063 for (stub_sec = htab->stub_bfd->sections; 3064 stub_sec != NULL; 3065 stub_sec = stub_sec->next) 3066 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0) 3067 stub_sec->size = 0; 3068 3069 bfd_hash_traverse (&htab->bstab, hppa_size_one_stub, htab); 3070 3071 /* Ask the linker to do its stuff. */ 3072 (*htab->layout_sections_again) (); 3073 stub_changed = FALSE; 3074 } 3075 3076 free (htab->all_local_syms); 3077 return TRUE; 3078 3079 error_ret_free_local: 3080 free (htab->all_local_syms); 3081 return FALSE; 3082} 3083 3084/* For a final link, this function is called after we have sized the 3085 stubs to provide a value for __gp. */ 3086 3087bfd_boolean 3088elf32_hppa_set_gp (bfd *abfd, struct bfd_link_info *info) 3089{ 3090 struct bfd_link_hash_entry *h; 3091 asection *sec = NULL; 3092 bfd_vma gp_val = 0; 3093 struct elf32_hppa_link_hash_table *htab; 3094 3095 htab = hppa_link_hash_table (info); 3096 if (htab == NULL) 3097 return FALSE; 3098 3099 h = bfd_link_hash_lookup (&htab->etab.root, "$global$", FALSE, FALSE, FALSE); 3100 3101 if (h != NULL 3102 && (h->type == bfd_link_hash_defined 3103 || h->type == bfd_link_hash_defweak)) 3104 { 3105 gp_val = h->u.def.value; 3106 sec = h->u.def.section; 3107 } 3108 else 3109 { 3110 asection *splt = bfd_get_section_by_name (abfd, ".plt"); 3111 asection *sgot = bfd_get_section_by_name (abfd, ".got"); 3112 3113 /* Choose to point our LTP at, in this order, one of .plt, .got, 3114 or .data, if these sections exist. In the case of choosing 3115 .plt try to make the LTP ideal for addressing anywhere in the 3116 .plt or .got with a 14 bit signed offset. Typically, the end 3117 of the .plt is the start of the .got, so choose .plt + 0x2000 3118 if either the .plt or .got is larger than 0x2000. If both 3119 the .plt and .got are smaller than 0x2000, choose the end of 3120 the .plt section. */ 3121 sec = strcmp (bfd_get_target (abfd), "elf32-hppa-netbsd") == 0 3122 ? NULL : splt; 3123 if (sec != NULL) 3124 { 3125 gp_val = sec->size; 3126 if (gp_val > 0x2000 || (sgot && sgot->size > 0x2000)) 3127 { 3128 gp_val = 0x2000; 3129 } 3130 } 3131 else 3132 { 3133 sec = sgot; 3134 if (sec != NULL) 3135 { 3136 if (strcmp (bfd_get_target (abfd), "elf32-hppa-netbsd") != 0) 3137 { 3138 /* We know we don't have a .plt. If .got is large, 3139 offset our LTP. */ 3140 if (sec->size > 0x2000) 3141 gp_val = 0x2000; 3142 } 3143 } 3144 else 3145 { 3146 /* No .plt or .got. Who cares what the LTP is? */ 3147 sec = bfd_get_section_by_name (abfd, ".data"); 3148 } 3149 } 3150 3151 if (h != NULL) 3152 { 3153 h->type = bfd_link_hash_defined; 3154 h->u.def.value = gp_val; 3155 if (sec != NULL) 3156 h->u.def.section = sec; 3157 else 3158 h->u.def.section = bfd_abs_section_ptr; 3159 } 3160 } 3161 3162 if (sec != NULL && sec->output_section != NULL) 3163 gp_val += sec->output_section->vma + sec->output_offset; 3164 3165 elf_gp (abfd) = gp_val; 3166 return TRUE; 3167} 3168 3169/* Build all the stubs associated with the current output file. The 3170 stubs are kept in a hash table attached to the main linker hash 3171 table. We also set up the .plt entries for statically linked PIC 3172 functions here. This function is called via hppaelf_finish in the 3173 linker. */ 3174 3175bfd_boolean 3176elf32_hppa_build_stubs (struct bfd_link_info *info) 3177{ 3178 asection *stub_sec; 3179 struct bfd_hash_table *table; 3180 struct elf32_hppa_link_hash_table *htab; 3181 3182 htab = hppa_link_hash_table (info); 3183 if (htab == NULL) 3184 return FALSE; 3185 3186 for (stub_sec = htab->stub_bfd->sections; 3187 stub_sec != NULL; 3188 stub_sec = stub_sec->next) 3189 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0 3190 && stub_sec->size != 0) 3191 { 3192 /* Allocate memory to hold the linker stubs. */ 3193 stub_sec->contents = bfd_zalloc (htab->stub_bfd, stub_sec->size); 3194 if (stub_sec->contents == NULL) 3195 return FALSE; 3196 stub_sec->size = 0; 3197 } 3198 3199 /* Build the stubs as directed by the stub hash table. */ 3200 table = &htab->bstab; 3201 bfd_hash_traverse (table, hppa_build_one_stub, info); 3202 3203 return TRUE; 3204} 3205 3206/* Return the base vma address which should be subtracted from the real 3207 address when resolving a dtpoff relocation. 3208 This is PT_TLS segment p_vaddr. */ 3209 3210static bfd_vma 3211dtpoff_base (struct bfd_link_info *info) 3212{ 3213 /* If tls_sec is NULL, we should have signalled an error already. */ 3214 if (elf_hash_table (info)->tls_sec == NULL) 3215 return 0; 3216 return elf_hash_table (info)->tls_sec->vma; 3217} 3218 3219/* Return the relocation value for R_PARISC_TLS_TPOFF*.. */ 3220 3221static bfd_vma 3222tpoff (struct bfd_link_info *info, bfd_vma address) 3223{ 3224 struct elf_link_hash_table *htab = elf_hash_table (info); 3225 3226 /* If tls_sec is NULL, we should have signalled an error already. */ 3227 if (htab->tls_sec == NULL) 3228 return 0; 3229 /* hppa TLS ABI is variant I and static TLS block start just after 3230 tcbhead structure which has 2 pointer fields. */ 3231 return (address - htab->tls_sec->vma 3232 + align_power ((bfd_vma) 8, htab->tls_sec->alignment_power)); 3233} 3234 3235/* Perform a final link. */ 3236 3237static bfd_boolean 3238elf32_hppa_final_link (bfd *abfd, struct bfd_link_info *info) 3239{ 3240 struct stat buf; 3241 3242 /* Invoke the regular ELF linker to do all the work. */ 3243 if (!bfd_elf_final_link (abfd, info)) 3244 return FALSE; 3245 3246 /* If we're producing a final executable, sort the contents of the 3247 unwind section. */ 3248 if (bfd_link_relocatable (info)) 3249 return TRUE; 3250 3251 /* Do not attempt to sort non-regular files. This is here 3252 especially for configure scripts and kernel builds which run 3253 tests with "ld [...] -o /dev/null". */ 3254 if (stat (abfd->filename, &buf) != 0 3255 || !S_ISREG(buf.st_mode)) 3256 return TRUE; 3257 3258 return elf_hppa_sort_unwind (abfd); 3259} 3260 3261/* Record the lowest address for the data and text segments. */ 3262 3263static void 3264hppa_record_segment_addr (bfd *abfd, asection *section, void *data) 3265{ 3266 struct elf32_hppa_link_hash_table *htab; 3267 3268 htab = (struct elf32_hppa_link_hash_table*) data; 3269 if (htab == NULL) 3270 return; 3271 3272 if ((section->flags & (SEC_ALLOC | SEC_LOAD)) == (SEC_ALLOC | SEC_LOAD)) 3273 { 3274 bfd_vma value; 3275 Elf_Internal_Phdr *p; 3276 3277 p = _bfd_elf_find_segment_containing_section (abfd, section->output_section); 3278 BFD_ASSERT (p != NULL); 3279 value = p->p_vaddr; 3280 3281 if ((section->flags & SEC_READONLY) != 0) 3282 { 3283 if (value < htab->text_segment_base) 3284 htab->text_segment_base = value; 3285 } 3286 else 3287 { 3288 if (value < htab->data_segment_base) 3289 htab->data_segment_base = value; 3290 } 3291 } 3292} 3293 3294/* Perform a relocation as part of a final link. */ 3295 3296static bfd_reloc_status_type 3297final_link_relocate (asection *input_section, 3298 bfd_byte *contents, 3299 const Elf_Internal_Rela *rela, 3300 bfd_vma value, 3301 struct elf32_hppa_link_hash_table *htab, 3302 asection *sym_sec, 3303 struct elf32_hppa_link_hash_entry *hh, 3304 struct bfd_link_info *info) 3305{ 3306 int insn; 3307 unsigned int r_type = ELF32_R_TYPE (rela->r_info); 3308 unsigned int orig_r_type = r_type; 3309 reloc_howto_type *howto = elf_hppa_howto_table + r_type; 3310 int r_format = howto->bitsize; 3311 enum hppa_reloc_field_selector_type_alt r_field; 3312 bfd *input_bfd = input_section->owner; 3313 bfd_vma offset = rela->r_offset; 3314 bfd_vma max_branch_offset = 0; 3315 bfd_byte *hit_data = contents + offset; 3316 bfd_signed_vma addend = rela->r_addend; 3317 bfd_vma location; 3318 struct elf32_hppa_stub_hash_entry *hsh = NULL; 3319 int val; 3320 3321 if (r_type == R_PARISC_NONE) 3322 return bfd_reloc_ok; 3323 3324 insn = bfd_get_32 (input_bfd, hit_data); 3325 3326 /* Find out where we are and where we're going. */ 3327 location = (offset + 3328 input_section->output_offset + 3329 input_section->output_section->vma); 3330 3331 /* If we are not building a shared library, convert DLTIND relocs to 3332 DPREL relocs. */ 3333 if (!bfd_link_pic (info)) 3334 { 3335 switch (r_type) 3336 { 3337 case R_PARISC_DLTIND21L: 3338 case R_PARISC_TLS_GD21L: 3339 case R_PARISC_TLS_LDM21L: 3340 case R_PARISC_TLS_IE21L: 3341 r_type = R_PARISC_DPREL21L; 3342 break; 3343 3344 case R_PARISC_DLTIND14R: 3345 case R_PARISC_TLS_GD14R: 3346 case R_PARISC_TLS_LDM14R: 3347 case R_PARISC_TLS_IE14R: 3348 r_type = R_PARISC_DPREL14R; 3349 break; 3350 3351 case R_PARISC_DLTIND14F: 3352 r_type = R_PARISC_DPREL14F; 3353 break; 3354 } 3355 } 3356 3357 switch (r_type) 3358 { 3359 case R_PARISC_PCREL12F: 3360 case R_PARISC_PCREL17F: 3361 case R_PARISC_PCREL22F: 3362 /* If this call should go via the plt, find the import stub in 3363 the stub hash. */ 3364 if (sym_sec == NULL 3365 || sym_sec->output_section == NULL 3366 || (hh != NULL 3367 && hh->eh.plt.offset != (bfd_vma) -1 3368 && hh->eh.dynindx != -1 3369 && !hh->plabel 3370 && (bfd_link_pic (info) 3371 || !hh->eh.def_regular 3372 || hh->eh.root.type == bfd_link_hash_defweak))) 3373 { 3374 hsh = hppa_get_stub_entry (input_section, sym_sec, 3375 hh, rela, htab); 3376 if (hsh != NULL) 3377 { 3378 value = (hsh->stub_offset 3379 + hsh->stub_sec->output_offset 3380 + hsh->stub_sec->output_section->vma); 3381 addend = 0; 3382 } 3383 else if (sym_sec == NULL && hh != NULL 3384 && hh->eh.root.type == bfd_link_hash_undefweak) 3385 { 3386 /* It's OK if undefined weak. Calls to undefined weak 3387 symbols behave as if the "called" function 3388 immediately returns. We can thus call to a weak 3389 function without first checking whether the function 3390 is defined. */ 3391 value = location; 3392 addend = 8; 3393 } 3394 else 3395 return bfd_reloc_undefined; 3396 } 3397 /* Fall thru. */ 3398 3399 case R_PARISC_PCREL21L: 3400 case R_PARISC_PCREL17C: 3401 case R_PARISC_PCREL17R: 3402 case R_PARISC_PCREL14R: 3403 case R_PARISC_PCREL14F: 3404 case R_PARISC_PCREL32: 3405 /* Make it a pc relative offset. */ 3406 value -= location; 3407 addend -= 8; 3408 break; 3409 3410 case R_PARISC_DPREL21L: 3411 case R_PARISC_DPREL14R: 3412 case R_PARISC_DPREL14F: 3413 /* Convert instructions that use the linkage table pointer (r19) to 3414 instructions that use the global data pointer (dp). This is the 3415 most efficient way of using PIC code in an incomplete executable, 3416 but the user must follow the standard runtime conventions for 3417 accessing data for this to work. */ 3418 if (orig_r_type != r_type) 3419 { 3420 if (r_type == R_PARISC_DPREL21L) 3421 { 3422 /* GCC sometimes uses a register other than r19 for the 3423 operation, so we must convert any addil instruction 3424 that uses this relocation. */ 3425 if ((insn & 0xfc000000) == ((int) OP_ADDIL << 26)) 3426 insn = ADDIL_DP; 3427 else 3428 /* We must have a ldil instruction. It's too hard to find 3429 and convert the associated add instruction, so issue an 3430 error. */ 3431 _bfd_error_handler 3432 /* xgettext:c-format */ 3433 (_("%B(%A+0x%lx): %s fixup for insn 0x%x is not supported in a non-shared link"), 3434 input_bfd, 3435 input_section, 3436 (long) offset, 3437 howto->name, 3438 insn); 3439 } 3440 else if (r_type == R_PARISC_DPREL14F) 3441 { 3442 /* This must be a format 1 load/store. Change the base 3443 register to dp. */ 3444 insn = (insn & 0xfc1ffff) | (27 << 21); 3445 } 3446 } 3447 3448 /* For all the DP relative relocations, we need to examine the symbol's 3449 section. If it has no section or if it's a code section, then 3450 "data pointer relative" makes no sense. In that case we don't 3451 adjust the "value", and for 21 bit addil instructions, we change the 3452 source addend register from %dp to %r0. This situation commonly 3453 arises for undefined weak symbols and when a variable's "constness" 3454 is declared differently from the way the variable is defined. For 3455 instance: "extern int foo" with foo defined as "const int foo". */ 3456 if (sym_sec == NULL || (sym_sec->flags & SEC_CODE) != 0) 3457 { 3458 if ((insn & ((0x3f << 26) | (0x1f << 21))) 3459 == (((int) OP_ADDIL << 26) | (27 << 21))) 3460 { 3461 insn &= ~ (0x1f << 21); 3462 } 3463 /* Now try to make things easy for the dynamic linker. */ 3464 3465 break; 3466 } 3467 /* Fall thru. */ 3468 3469 case R_PARISC_DLTIND21L: 3470 case R_PARISC_DLTIND14R: 3471 case R_PARISC_DLTIND14F: 3472 case R_PARISC_TLS_GD21L: 3473 case R_PARISC_TLS_LDM21L: 3474 case R_PARISC_TLS_IE21L: 3475 case R_PARISC_TLS_GD14R: 3476 case R_PARISC_TLS_LDM14R: 3477 case R_PARISC_TLS_IE14R: 3478 value -= elf_gp (input_section->output_section->owner); 3479 break; 3480 3481 case R_PARISC_SEGREL32: 3482 if ((sym_sec->flags & SEC_CODE) != 0) 3483 value -= htab->text_segment_base; 3484 else 3485 value -= htab->data_segment_base; 3486 break; 3487 3488 default: 3489 break; 3490 } 3491 3492 switch (r_type) 3493 { 3494 case R_PARISC_DIR32: 3495 case R_PARISC_DIR14F: 3496 case R_PARISC_DIR17F: 3497 case R_PARISC_PCREL17C: 3498 case R_PARISC_PCREL14F: 3499 case R_PARISC_PCREL32: 3500 case R_PARISC_DPREL14F: 3501 case R_PARISC_PLABEL32: 3502 case R_PARISC_DLTIND14F: 3503 case R_PARISC_SEGBASE: 3504 case R_PARISC_SEGREL32: 3505 case R_PARISC_TLS_DTPMOD32: 3506 case R_PARISC_TLS_DTPOFF32: 3507 case R_PARISC_TLS_TPREL32: 3508 r_field = e_fsel; 3509 break; 3510 3511 case R_PARISC_DLTIND21L: 3512 case R_PARISC_PCREL21L: 3513 case R_PARISC_PLABEL21L: 3514 r_field = e_lsel; 3515 break; 3516 3517 case R_PARISC_DIR21L: 3518 case R_PARISC_DPREL21L: 3519 case R_PARISC_TLS_GD21L: 3520 case R_PARISC_TLS_LDM21L: 3521 case R_PARISC_TLS_LDO21L: 3522 case R_PARISC_TLS_IE21L: 3523 case R_PARISC_TLS_LE21L: 3524 r_field = e_lrsel; 3525 break; 3526 3527 case R_PARISC_PCREL17R: 3528 case R_PARISC_PCREL14R: 3529 case R_PARISC_PLABEL14R: 3530 case R_PARISC_DLTIND14R: 3531 r_field = e_rsel; 3532 break; 3533 3534 case R_PARISC_DIR17R: 3535 case R_PARISC_DIR14R: 3536 case R_PARISC_DPREL14R: 3537 case R_PARISC_TLS_GD14R: 3538 case R_PARISC_TLS_LDM14R: 3539 case R_PARISC_TLS_LDO14R: 3540 case R_PARISC_TLS_IE14R: 3541 case R_PARISC_TLS_LE14R: 3542 r_field = e_rrsel; 3543 break; 3544 3545 case R_PARISC_PCREL12F: 3546 case R_PARISC_PCREL17F: 3547 case R_PARISC_PCREL22F: 3548 r_field = e_fsel; 3549 3550 if (r_type == (unsigned int) R_PARISC_PCREL17F) 3551 { 3552 max_branch_offset = (1 << (17-1)) << 2; 3553 } 3554 else if (r_type == (unsigned int) R_PARISC_PCREL12F) 3555 { 3556 max_branch_offset = (1 << (12-1)) << 2; 3557 } 3558 else 3559 { 3560 max_branch_offset = (1 << (22-1)) << 2; 3561 } 3562 3563 /* sym_sec is NULL on undefined weak syms or when shared on 3564 undefined syms. We've already checked for a stub for the 3565 shared undefined case. */ 3566 if (sym_sec == NULL) 3567 break; 3568 3569 /* If the branch is out of reach, then redirect the 3570 call to the local stub for this function. */ 3571 if (value + addend + max_branch_offset >= 2*max_branch_offset) 3572 { 3573 hsh = hppa_get_stub_entry (input_section, sym_sec, 3574 hh, rela, htab); 3575 if (hsh == NULL) 3576 return bfd_reloc_undefined; 3577 3578 /* Munge up the value and addend so that we call the stub 3579 rather than the procedure directly. */ 3580 value = (hsh->stub_offset 3581 + hsh->stub_sec->output_offset 3582 + hsh->stub_sec->output_section->vma 3583 - location); 3584 addend = -8; 3585 } 3586 break; 3587 3588 /* Something we don't know how to handle. */ 3589 default: 3590 return bfd_reloc_notsupported; 3591 } 3592 3593 /* Make sure we can reach the stub. */ 3594 if (max_branch_offset != 0 3595 && value + addend + max_branch_offset >= 2*max_branch_offset) 3596 { 3597 _bfd_error_handler 3598 /* xgettext:c-format */ 3599 (_("%B(%A+0x%lx): cannot reach %s, recompile with -ffunction-sections"), 3600 input_bfd, 3601 input_section, 3602 (long) offset, 3603 hsh->bh_root.string); 3604 bfd_set_error (bfd_error_bad_value); 3605 return bfd_reloc_notsupported; 3606 } 3607 3608 val = hppa_field_adjust (value, addend, r_field); 3609 3610 switch (r_type) 3611 { 3612 case R_PARISC_PCREL12F: 3613 case R_PARISC_PCREL17C: 3614 case R_PARISC_PCREL17F: 3615 case R_PARISC_PCREL17R: 3616 case R_PARISC_PCREL22F: 3617 case R_PARISC_DIR17F: 3618 case R_PARISC_DIR17R: 3619 /* This is a branch. Divide the offset by four. 3620 Note that we need to decide whether it's a branch or 3621 otherwise by inspecting the reloc. Inspecting insn won't 3622 work as insn might be from a .word directive. */ 3623 val >>= 2; 3624 break; 3625 3626 default: 3627 break; 3628 } 3629 3630 insn = hppa_rebuild_insn (insn, val, r_format); 3631 3632 /* Update the instruction word. */ 3633 bfd_put_32 (input_bfd, (bfd_vma) insn, hit_data); 3634 return bfd_reloc_ok; 3635} 3636 3637/* Relocate an HPPA ELF section. */ 3638 3639static bfd_boolean 3640elf32_hppa_relocate_section (bfd *output_bfd, 3641 struct bfd_link_info *info, 3642 bfd *input_bfd, 3643 asection *input_section, 3644 bfd_byte *contents, 3645 Elf_Internal_Rela *relocs, 3646 Elf_Internal_Sym *local_syms, 3647 asection **local_sections) 3648{ 3649 bfd_vma *local_got_offsets; 3650 struct elf32_hppa_link_hash_table *htab; 3651 Elf_Internal_Shdr *symtab_hdr; 3652 Elf_Internal_Rela *rela; 3653 Elf_Internal_Rela *relend; 3654 3655 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; 3656 3657 htab = hppa_link_hash_table (info); 3658 if (htab == NULL) 3659 return FALSE; 3660 3661 local_got_offsets = elf_local_got_offsets (input_bfd); 3662 3663 rela = relocs; 3664 relend = relocs + input_section->reloc_count; 3665 for (; rela < relend; rela++) 3666 { 3667 unsigned int r_type; 3668 reloc_howto_type *howto; 3669 unsigned int r_symndx; 3670 struct elf32_hppa_link_hash_entry *hh; 3671 Elf_Internal_Sym *sym; 3672 asection *sym_sec; 3673 bfd_vma relocation; 3674 bfd_reloc_status_type rstatus; 3675 const char *sym_name; 3676 bfd_boolean plabel; 3677 bfd_boolean warned_undef; 3678 3679 r_type = ELF32_R_TYPE (rela->r_info); 3680 if (r_type >= (unsigned int) R_PARISC_UNIMPLEMENTED) 3681 { 3682 bfd_set_error (bfd_error_bad_value); 3683 return FALSE; 3684 } 3685 if (r_type == (unsigned int) R_PARISC_GNU_VTENTRY 3686 || r_type == (unsigned int) R_PARISC_GNU_VTINHERIT) 3687 continue; 3688 3689 r_symndx = ELF32_R_SYM (rela->r_info); 3690 hh = NULL; 3691 sym = NULL; 3692 sym_sec = NULL; 3693 warned_undef = FALSE; 3694 if (r_symndx < symtab_hdr->sh_info) 3695 { 3696 /* This is a local symbol, h defaults to NULL. */ 3697 sym = local_syms + r_symndx; 3698 sym_sec = local_sections[r_symndx]; 3699 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sym_sec, rela); 3700 } 3701 else 3702 { 3703 struct elf_link_hash_entry *eh; 3704 bfd_boolean unresolved_reloc, ignored; 3705 struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (input_bfd); 3706 3707 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rela, 3708 r_symndx, symtab_hdr, sym_hashes, 3709 eh, sym_sec, relocation, 3710 unresolved_reloc, warned_undef, 3711 ignored); 3712 3713 if (!bfd_link_relocatable (info) 3714 && relocation == 0 3715 && eh->root.type != bfd_link_hash_defined 3716 && eh->root.type != bfd_link_hash_defweak 3717 && eh->root.type != bfd_link_hash_undefweak) 3718 { 3719 if (info->unresolved_syms_in_objects == RM_IGNORE 3720 && ELF_ST_VISIBILITY (eh->other) == STV_DEFAULT 3721 && eh->type == STT_PARISC_MILLI) 3722 { 3723 (*info->callbacks->undefined_symbol) 3724 (info, eh_name (eh), input_bfd, 3725 input_section, rela->r_offset, FALSE); 3726 warned_undef = TRUE; 3727 } 3728 } 3729 hh = hppa_elf_hash_entry (eh); 3730 } 3731 3732 if (sym_sec != NULL && discarded_section (sym_sec)) 3733 RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section, 3734 rela, 1, relend, 3735 elf_hppa_howto_table + r_type, 0, 3736 contents); 3737 3738 if (bfd_link_relocatable (info)) 3739 continue; 3740 3741 /* Do any required modifications to the relocation value, and 3742 determine what types of dynamic info we need to output, if 3743 any. */ 3744 plabel = 0; 3745 switch (r_type) 3746 { 3747 case R_PARISC_DLTIND14F: 3748 case R_PARISC_DLTIND14R: 3749 case R_PARISC_DLTIND21L: 3750 { 3751 bfd_vma off; 3752 bfd_boolean do_got = 0; 3753 3754 /* Relocation is to the entry for this symbol in the 3755 global offset table. */ 3756 if (hh != NULL) 3757 { 3758 bfd_boolean dyn; 3759 3760 off = hh->eh.got.offset; 3761 dyn = htab->etab.dynamic_sections_created; 3762 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 3763 bfd_link_pic (info), 3764 &hh->eh)) 3765 { 3766 /* If we aren't going to call finish_dynamic_symbol, 3767 then we need to handle initialisation of the .got 3768 entry and create needed relocs here. Since the 3769 offset must always be a multiple of 4, we use the 3770 least significant bit to record whether we have 3771 initialised it already. */ 3772 if ((off & 1) != 0) 3773 off &= ~1; 3774 else 3775 { 3776 hh->eh.got.offset |= 1; 3777 do_got = 1; 3778 } 3779 } 3780 } 3781 else 3782 { 3783 /* Local symbol case. */ 3784 if (local_got_offsets == NULL) 3785 abort (); 3786 3787 off = local_got_offsets[r_symndx]; 3788 3789 /* The offset must always be a multiple of 4. We use 3790 the least significant bit to record whether we have 3791 already generated the necessary reloc. */ 3792 if ((off & 1) != 0) 3793 off &= ~1; 3794 else 3795 { 3796 local_got_offsets[r_symndx] |= 1; 3797 do_got = 1; 3798 } 3799 } 3800 3801 if (do_got) 3802 { 3803 if (bfd_link_pic (info)) 3804 { 3805 /* Output a dynamic relocation for this GOT entry. 3806 In this case it is relative to the base of the 3807 object because the symbol index is zero. */ 3808 Elf_Internal_Rela outrel; 3809 bfd_byte *loc; 3810 asection *sec = htab->etab.srelgot; 3811 3812 outrel.r_offset = (off 3813 + htab->etab.sgot->output_offset 3814 + htab->etab.sgot->output_section->vma); 3815 outrel.r_info = ELF32_R_INFO (0, R_PARISC_DIR32); 3816 outrel.r_addend = relocation; 3817 loc = sec->contents; 3818 loc += sec->reloc_count++ * sizeof (Elf32_External_Rela); 3819 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc); 3820 } 3821 else 3822 bfd_put_32 (output_bfd, relocation, 3823 htab->etab.sgot->contents + off); 3824 } 3825 3826 if (off >= (bfd_vma) -2) 3827 abort (); 3828 3829 /* Add the base of the GOT to the relocation value. */ 3830 relocation = (off 3831 + htab->etab.sgot->output_offset 3832 + htab->etab.sgot->output_section->vma); 3833 } 3834 break; 3835 3836 case R_PARISC_SEGREL32: 3837 /* If this is the first SEGREL relocation, then initialize 3838 the segment base values. */ 3839 if (htab->text_segment_base == (bfd_vma) -1) 3840 bfd_map_over_sections (output_bfd, hppa_record_segment_addr, htab); 3841 break; 3842 3843 case R_PARISC_PLABEL14R: 3844 case R_PARISC_PLABEL21L: 3845 case R_PARISC_PLABEL32: 3846 if (htab->etab.dynamic_sections_created) 3847 { 3848 bfd_vma off; 3849 bfd_boolean do_plt = 0; 3850 /* If we have a global symbol with a PLT slot, then 3851 redirect this relocation to it. */ 3852 if (hh != NULL) 3853 { 3854 off = hh->eh.plt.offset; 3855 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 3856 bfd_link_pic (info), 3857 &hh->eh)) 3858 { 3859 /* In a non-shared link, adjust_dynamic_symbols 3860 isn't called for symbols forced local. We 3861 need to write out the plt entry here. */ 3862 if ((off & 1) != 0) 3863 off &= ~1; 3864 else 3865 { 3866 hh->eh.plt.offset |= 1; 3867 do_plt = 1; 3868 } 3869 } 3870 } 3871 else 3872 { 3873 bfd_vma *local_plt_offsets; 3874 3875 if (local_got_offsets == NULL) 3876 abort (); 3877 3878 local_plt_offsets = local_got_offsets + symtab_hdr->sh_info; 3879 off = local_plt_offsets[r_symndx]; 3880 3881 /* As for the local .got entry case, we use the last 3882 bit to record whether we've already initialised 3883 this local .plt entry. */ 3884 if ((off & 1) != 0) 3885 off &= ~1; 3886 else 3887 { 3888 local_plt_offsets[r_symndx] |= 1; 3889 do_plt = 1; 3890 } 3891 } 3892 3893 if (do_plt) 3894 { 3895 if (bfd_link_pic (info)) 3896 { 3897 /* Output a dynamic IPLT relocation for this 3898 PLT entry. */ 3899 Elf_Internal_Rela outrel; 3900 bfd_byte *loc; 3901 asection *s = htab->etab.srelplt; 3902 3903 outrel.r_offset = (off 3904 + htab->etab.splt->output_offset 3905 + htab->etab.splt->output_section->vma); 3906 outrel.r_info = ELF32_R_INFO (0, R_PARISC_IPLT); 3907 outrel.r_addend = relocation; 3908 loc = s->contents; 3909 loc += s->reloc_count++ * sizeof (Elf32_External_Rela); 3910 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc); 3911 } 3912 else 3913 { 3914 bfd_put_32 (output_bfd, 3915 relocation, 3916 htab->etab.splt->contents + off); 3917 bfd_put_32 (output_bfd, 3918 elf_gp (htab->etab.splt->output_section->owner), 3919 htab->etab.splt->contents + off + 4); 3920 } 3921 } 3922 3923 if (off >= (bfd_vma) -2) 3924 abort (); 3925 3926 /* PLABELs contain function pointers. Relocation is to 3927 the entry for the function in the .plt. The magic +2 3928 offset signals to $$dyncall that the function pointer 3929 is in the .plt and thus has a gp pointer too. 3930 Exception: Undefined PLABELs should have a value of 3931 zero. */ 3932 if (hh == NULL 3933 || (hh->eh.root.type != bfd_link_hash_undefweak 3934 && hh->eh.root.type != bfd_link_hash_undefined)) 3935 { 3936 relocation = (off 3937 + htab->etab.splt->output_offset 3938 + htab->etab.splt->output_section->vma 3939 + 2); 3940 } 3941 plabel = 1; 3942 } 3943 /* Fall through. */ 3944 3945 case R_PARISC_DIR17F: 3946 case R_PARISC_DIR17R: 3947 case R_PARISC_DIR14F: 3948 case R_PARISC_DIR14R: 3949 case R_PARISC_DIR21L: 3950 case R_PARISC_DPREL14F: 3951 case R_PARISC_DPREL14R: 3952 case R_PARISC_DPREL21L: 3953 case R_PARISC_DIR32: 3954 if ((input_section->flags & SEC_ALLOC) == 0) 3955 break; 3956 3957 /* The reloc types handled here and this conditional 3958 expression must match the code in ..check_relocs and 3959 allocate_dynrelocs. ie. We need exactly the same condition 3960 as in ..check_relocs, with some extra conditions (dynindx 3961 test in this case) to cater for relocs removed by 3962 allocate_dynrelocs. If you squint, the non-shared test 3963 here does indeed match the one in ..check_relocs, the 3964 difference being that here we test DEF_DYNAMIC as well as 3965 !DEF_REGULAR. All common syms end up with !DEF_REGULAR, 3966 which is why we can't use just that test here. 3967 Conversely, DEF_DYNAMIC can't be used in check_relocs as 3968 there all files have not been loaded. */ 3969 if ((bfd_link_pic (info) 3970 && (hh == NULL 3971 || ELF_ST_VISIBILITY (hh->eh.other) == STV_DEFAULT 3972 || hh->eh.root.type != bfd_link_hash_undefweak) 3973 && (IS_ABSOLUTE_RELOC (r_type) 3974 || !SYMBOL_CALLS_LOCAL (info, &hh->eh))) 3975 || (!bfd_link_pic (info) 3976 && hh != NULL 3977 && hh->eh.dynindx != -1 3978 && !hh->eh.non_got_ref 3979 && ((ELIMINATE_COPY_RELOCS 3980 && hh->eh.def_dynamic 3981 && !hh->eh.def_regular) 3982 || hh->eh.root.type == bfd_link_hash_undefweak 3983 || hh->eh.root.type == bfd_link_hash_undefined))) 3984 { 3985 Elf_Internal_Rela outrel; 3986 bfd_boolean skip; 3987 asection *sreloc; 3988 bfd_byte *loc; 3989 3990 /* When generating a shared object, these relocations 3991 are copied into the output file to be resolved at run 3992 time. */ 3993 3994 outrel.r_addend = rela->r_addend; 3995 outrel.r_offset = 3996 _bfd_elf_section_offset (output_bfd, info, input_section, 3997 rela->r_offset); 3998 skip = (outrel.r_offset == (bfd_vma) -1 3999 || outrel.r_offset == (bfd_vma) -2); 4000 outrel.r_offset += (input_section->output_offset 4001 + input_section->output_section->vma); 4002 4003 if (skip) 4004 { 4005 memset (&outrel, 0, sizeof (outrel)); 4006 } 4007 else if (hh != NULL 4008 && hh->eh.dynindx != -1 4009 && (plabel 4010 || !IS_ABSOLUTE_RELOC (r_type) 4011 || !bfd_link_pic (info) 4012 || !SYMBOLIC_BIND (info, &hh->eh) 4013 || !hh->eh.def_regular)) 4014 { 4015 outrel.r_info = ELF32_R_INFO (hh->eh.dynindx, r_type); 4016 } 4017 else /* It's a local symbol, or one marked to become local. */ 4018 { 4019 int indx = 0; 4020 4021 /* Add the absolute offset of the symbol. */ 4022 outrel.r_addend += relocation; 4023 4024 /* Global plabels need to be processed by the 4025 dynamic linker so that functions have at most one 4026 fptr. For this reason, we need to differentiate 4027 between global and local plabels, which we do by 4028 providing the function symbol for a global plabel 4029 reloc, and no symbol for local plabels. */ 4030 if (! plabel 4031 && sym_sec != NULL 4032 && sym_sec->output_section != NULL 4033 && ! bfd_is_abs_section (sym_sec)) 4034 { 4035 asection *osec; 4036 4037 osec = sym_sec->output_section; 4038 indx = elf_section_data (osec)->dynindx; 4039 if (indx == 0) 4040 { 4041 osec = htab->etab.text_index_section; 4042 indx = elf_section_data (osec)->dynindx; 4043 } 4044 BFD_ASSERT (indx != 0); 4045 4046 /* We are turning this relocation into one 4047 against a section symbol, so subtract out the 4048 output section's address but not the offset 4049 of the input section in the output section. */ 4050 outrel.r_addend -= osec->vma; 4051 } 4052 4053 outrel.r_info = ELF32_R_INFO (indx, r_type); 4054 } 4055 sreloc = elf_section_data (input_section)->sreloc; 4056 if (sreloc == NULL) 4057 abort (); 4058 4059 loc = sreloc->contents; 4060 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela); 4061 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc); 4062 } 4063 break; 4064 4065 case R_PARISC_TLS_LDM21L: 4066 case R_PARISC_TLS_LDM14R: 4067 { 4068 bfd_vma off; 4069 4070 off = htab->tls_ldm_got.offset; 4071 if (off & 1) 4072 off &= ~1; 4073 else 4074 { 4075 Elf_Internal_Rela outrel; 4076 bfd_byte *loc; 4077 4078 outrel.r_offset = (off 4079 + htab->etab.sgot->output_section->vma 4080 + htab->etab.sgot->output_offset); 4081 outrel.r_addend = 0; 4082 outrel.r_info = ELF32_R_INFO (0, R_PARISC_TLS_DTPMOD32); 4083 loc = htab->etab.srelgot->contents; 4084 loc += htab->etab.srelgot->reloc_count++ * sizeof (Elf32_External_Rela); 4085 4086 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc); 4087 htab->tls_ldm_got.offset |= 1; 4088 } 4089 4090 /* Add the base of the GOT to the relocation value. */ 4091 relocation = (off 4092 + htab->etab.sgot->output_offset 4093 + htab->etab.sgot->output_section->vma); 4094 4095 break; 4096 } 4097 4098 case R_PARISC_TLS_LDO21L: 4099 case R_PARISC_TLS_LDO14R: 4100 relocation -= dtpoff_base (info); 4101 break; 4102 4103 case R_PARISC_TLS_GD21L: 4104 case R_PARISC_TLS_GD14R: 4105 case R_PARISC_TLS_IE21L: 4106 case R_PARISC_TLS_IE14R: 4107 { 4108 bfd_vma off; 4109 int indx; 4110 char tls_type; 4111 4112 indx = 0; 4113 if (hh != NULL) 4114 { 4115 bfd_boolean dyn; 4116 dyn = htab->etab.dynamic_sections_created; 4117 4118 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 4119 bfd_link_pic (info), 4120 &hh->eh) 4121 && (!bfd_link_pic (info) 4122 || !SYMBOL_REFERENCES_LOCAL (info, &hh->eh))) 4123 { 4124 indx = hh->eh.dynindx; 4125 } 4126 off = hh->eh.got.offset; 4127 tls_type = hh->tls_type; 4128 } 4129 else 4130 { 4131 off = local_got_offsets[r_symndx]; 4132 tls_type = hppa_elf_local_got_tls_type (input_bfd)[r_symndx]; 4133 } 4134 4135 if (tls_type == GOT_UNKNOWN) 4136 abort (); 4137 4138 if ((off & 1) != 0) 4139 off &= ~1; 4140 else 4141 { 4142 bfd_boolean need_relocs = FALSE; 4143 Elf_Internal_Rela outrel; 4144 bfd_byte *loc = NULL; 4145 int cur_off = off; 4146 4147 /* The GOT entries have not been initialized yet. Do it 4148 now, and emit any relocations. If both an IE GOT and a 4149 GD GOT are necessary, we emit the GD first. */ 4150 4151 if ((bfd_link_pic (info) || indx != 0) 4152 && (hh == NULL 4153 || ELF_ST_VISIBILITY (hh->eh.other) == STV_DEFAULT 4154 || hh->eh.root.type != bfd_link_hash_undefweak)) 4155 { 4156 need_relocs = TRUE; 4157 loc = htab->etab.srelgot->contents; 4158 /* FIXME (CAO): Should this be reloc_count++ ? */ 4159 loc += htab->etab.srelgot->reloc_count * sizeof (Elf32_External_Rela); 4160 } 4161 4162 if (tls_type & GOT_TLS_GD) 4163 { 4164 if (need_relocs) 4165 { 4166 outrel.r_offset = (cur_off 4167 + htab->etab.sgot->output_section->vma 4168 + htab->etab.sgot->output_offset); 4169 outrel.r_info = ELF32_R_INFO (indx,R_PARISC_TLS_DTPMOD32); 4170 outrel.r_addend = 0; 4171 bfd_put_32 (output_bfd, 0, htab->etab.sgot->contents + cur_off); 4172 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc); 4173 htab->etab.srelgot->reloc_count++; 4174 loc += sizeof (Elf32_External_Rela); 4175 4176 if (indx == 0) 4177 bfd_put_32 (output_bfd, relocation - dtpoff_base (info), 4178 htab->etab.sgot->contents + cur_off + 4); 4179 else 4180 { 4181 bfd_put_32 (output_bfd, 0, 4182 htab->etab.sgot->contents + cur_off + 4); 4183 outrel.r_info = ELF32_R_INFO (indx, R_PARISC_TLS_DTPOFF32); 4184 outrel.r_offset += 4; 4185 bfd_elf32_swap_reloca_out (output_bfd, &outrel,loc); 4186 htab->etab.srelgot->reloc_count++; 4187 loc += sizeof (Elf32_External_Rela); 4188 } 4189 } 4190 else 4191 { 4192 /* If we are not emitting relocations for a 4193 general dynamic reference, then we must be in a 4194 static link or an executable link with the 4195 symbol binding locally. Mark it as belonging 4196 to module 1, the executable. */ 4197 bfd_put_32 (output_bfd, 1, 4198 htab->etab.sgot->contents + cur_off); 4199 bfd_put_32 (output_bfd, relocation - dtpoff_base (info), 4200 htab->etab.sgot->contents + cur_off + 4); 4201 } 4202 4203 4204 cur_off += 8; 4205 } 4206 4207 if (tls_type & GOT_TLS_IE) 4208 { 4209 if (need_relocs) 4210 { 4211 outrel.r_offset = (cur_off 4212 + htab->etab.sgot->output_section->vma 4213 + htab->etab.sgot->output_offset); 4214 outrel.r_info = ELF32_R_INFO (indx, R_PARISC_TLS_TPREL32); 4215 4216 if (indx == 0) 4217 outrel.r_addend = relocation - dtpoff_base (info); 4218 else 4219 outrel.r_addend = 0; 4220 4221 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc); 4222 htab->etab.srelgot->reloc_count++; 4223 loc += sizeof (Elf32_External_Rela); 4224 } 4225 else 4226 bfd_put_32 (output_bfd, tpoff (info, relocation), 4227 htab->etab.sgot->contents + cur_off); 4228 4229 cur_off += 4; 4230 } 4231 4232 if (hh != NULL) 4233 hh->eh.got.offset |= 1; 4234 else 4235 local_got_offsets[r_symndx] |= 1; 4236 } 4237 4238 if ((tls_type & GOT_TLS_GD) 4239 && r_type != R_PARISC_TLS_GD21L 4240 && r_type != R_PARISC_TLS_GD14R) 4241 off += 2 * GOT_ENTRY_SIZE; 4242 4243 /* Add the base of the GOT to the relocation value. */ 4244 relocation = (off 4245 + htab->etab.sgot->output_offset 4246 + htab->etab.sgot->output_section->vma); 4247 4248 break; 4249 } 4250 4251 case R_PARISC_TLS_LE21L: 4252 case R_PARISC_TLS_LE14R: 4253 { 4254 relocation = tpoff (info, relocation); 4255 break; 4256 } 4257 break; 4258 4259 default: 4260 break; 4261 } 4262 4263 rstatus = final_link_relocate (input_section, contents, rela, relocation, 4264 htab, sym_sec, hh, info); 4265 4266 if (rstatus == bfd_reloc_ok) 4267 continue; 4268 4269 if (hh != NULL) 4270 sym_name = hh_name (hh); 4271 else 4272 { 4273 sym_name = bfd_elf_string_from_elf_section (input_bfd, 4274 symtab_hdr->sh_link, 4275 sym->st_name); 4276 if (sym_name == NULL) 4277 return FALSE; 4278 if (*sym_name == '\0') 4279 sym_name = bfd_section_name (input_bfd, sym_sec); 4280 } 4281 4282 howto = elf_hppa_howto_table + r_type; 4283 4284 if (rstatus == bfd_reloc_undefined || rstatus == bfd_reloc_notsupported) 4285 { 4286 if (rstatus == bfd_reloc_notsupported || !warned_undef) 4287 { 4288 _bfd_error_handler 4289 /* xgettext:c-format */ 4290 (_("%B(%A+0x%lx): cannot handle %s for %s"), 4291 input_bfd, 4292 input_section, 4293 (long) rela->r_offset, 4294 howto->name, 4295 sym_name); 4296 bfd_set_error (bfd_error_bad_value); 4297 return FALSE; 4298 } 4299 } 4300 else 4301 (*info->callbacks->reloc_overflow) 4302 (info, (hh ? &hh->eh.root : NULL), sym_name, howto->name, 4303 (bfd_vma) 0, input_bfd, input_section, rela->r_offset); 4304 } 4305 4306 return TRUE; 4307} 4308 4309/* Finish up dynamic symbol handling. We set the contents of various 4310 dynamic sections here. */ 4311 4312static bfd_boolean 4313elf32_hppa_finish_dynamic_symbol (bfd *output_bfd, 4314 struct bfd_link_info *info, 4315 struct elf_link_hash_entry *eh, 4316 Elf_Internal_Sym *sym) 4317{ 4318 struct elf32_hppa_link_hash_table *htab; 4319 Elf_Internal_Rela rela; 4320 bfd_byte *loc; 4321 4322 htab = hppa_link_hash_table (info); 4323 if (htab == NULL) 4324 return FALSE; 4325 4326 if (eh->plt.offset != (bfd_vma) -1) 4327 { 4328 bfd_vma value; 4329 4330 if (eh->plt.offset & 1) 4331 abort (); 4332 4333 /* This symbol has an entry in the procedure linkage table. Set 4334 it up. 4335 4336 The format of a plt entry is 4337 <funcaddr> 4338 <__gp> 4339 */ 4340 value = 0; 4341 if (eh->root.type == bfd_link_hash_defined 4342 || eh->root.type == bfd_link_hash_defweak) 4343 { 4344 value = eh->root.u.def.value; 4345 if (eh->root.u.def.section->output_section != NULL) 4346 value += (eh->root.u.def.section->output_offset 4347 + eh->root.u.def.section->output_section->vma); 4348 } 4349 4350 /* Create a dynamic IPLT relocation for this entry. */ 4351 rela.r_offset = (eh->plt.offset 4352 + htab->etab.splt->output_offset 4353 + htab->etab.splt->output_section->vma); 4354 if (eh->dynindx != -1) 4355 { 4356 rela.r_info = ELF32_R_INFO (eh->dynindx, R_PARISC_IPLT); 4357 rela.r_addend = 0; 4358 } 4359 else 4360 { 4361 /* This symbol has been marked to become local, and is 4362 used by a plabel so must be kept in the .plt. */ 4363 rela.r_info = ELF32_R_INFO (0, R_PARISC_IPLT); 4364 rela.r_addend = value; 4365 } 4366 4367 loc = htab->etab.srelplt->contents; 4368 loc += htab->etab.srelplt->reloc_count++ * sizeof (Elf32_External_Rela); 4369 bfd_elf32_swap_reloca_out (htab->etab.splt->output_section->owner, &rela, loc); 4370 4371 if (!eh->def_regular) 4372 { 4373 /* Mark the symbol as undefined, rather than as defined in 4374 the .plt section. Leave the value alone. */ 4375 sym->st_shndx = SHN_UNDEF; 4376 } 4377 } 4378 4379 if (eh->got.offset != (bfd_vma) -1 4380 && (hppa_elf_hash_entry (eh)->tls_type & GOT_TLS_GD) == 0 4381 && (hppa_elf_hash_entry (eh)->tls_type & GOT_TLS_IE) == 0) 4382 { 4383 /* This symbol has an entry in the global offset table. Set it 4384 up. */ 4385 4386 rela.r_offset = ((eh->got.offset &~ (bfd_vma) 1) 4387 + htab->etab.sgot->output_offset 4388 + htab->etab.sgot->output_section->vma); 4389 4390 /* If this is a -Bsymbolic link and the symbol is defined 4391 locally or was forced to be local because of a version file, 4392 we just want to emit a RELATIVE reloc. The entry in the 4393 global offset table will already have been initialized in the 4394 relocate_section function. */ 4395 if (bfd_link_pic (info) 4396 && (SYMBOLIC_BIND (info, eh) || eh->dynindx == -1) 4397 && eh->def_regular) 4398 { 4399 rela.r_info = ELF32_R_INFO (0, R_PARISC_DIR32); 4400 rela.r_addend = (eh->root.u.def.value 4401 + eh->root.u.def.section->output_offset 4402 + eh->root.u.def.section->output_section->vma); 4403 } 4404 else 4405 { 4406 if ((eh->got.offset & 1) != 0) 4407 abort (); 4408 4409 bfd_put_32 (output_bfd, 0, htab->etab.sgot->contents + (eh->got.offset & ~1)); 4410 rela.r_info = ELF32_R_INFO (eh->dynindx, R_PARISC_DIR32); 4411 rela.r_addend = 0; 4412 } 4413 4414 loc = htab->etab.srelgot->contents; 4415 loc += htab->etab.srelgot->reloc_count++ * sizeof (Elf32_External_Rela); 4416 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); 4417 } 4418 4419 if (eh->needs_copy) 4420 { 4421 asection *sec; 4422 4423 /* This symbol needs a copy reloc. Set it up. */ 4424 4425 if (! (eh->dynindx != -1 4426 && (eh->root.type == bfd_link_hash_defined 4427 || eh->root.type == bfd_link_hash_defweak))) 4428 abort (); 4429 4430 rela.r_offset = (eh->root.u.def.value 4431 + eh->root.u.def.section->output_offset 4432 + eh->root.u.def.section->output_section->vma); 4433 rela.r_addend = 0; 4434 rela.r_info = ELF32_R_INFO (eh->dynindx, R_PARISC_COPY); 4435 if (eh->root.u.def.section == htab->etab.sdynrelro) 4436 sec = htab->etab.sreldynrelro; 4437 else 4438 sec = htab->etab.srelbss; 4439 loc = sec->contents + sec->reloc_count++ * sizeof (Elf32_External_Rela); 4440 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); 4441 } 4442 4443 /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. */ 4444 if (eh == htab->etab.hdynamic || eh == htab->etab.hgot) 4445 { 4446 sym->st_shndx = SHN_ABS; 4447 } 4448 4449 return TRUE; 4450} 4451 4452/* Used to decide how to sort relocs in an optimal manner for the 4453 dynamic linker, before writing them out. */ 4454 4455static enum elf_reloc_type_class 4456elf32_hppa_reloc_type_class (const struct bfd_link_info *info ATTRIBUTE_UNUSED, 4457 const asection *rel_sec ATTRIBUTE_UNUSED, 4458 const Elf_Internal_Rela *rela) 4459{ 4460 /* Handle TLS relocs first; we don't want them to be marked 4461 relative by the "if (ELF32_R_SYM (rela->r_info) == STN_UNDEF)" 4462 check below. */ 4463 switch ((int) ELF32_R_TYPE (rela->r_info)) 4464 { 4465 case R_PARISC_TLS_DTPMOD32: 4466 case R_PARISC_TLS_DTPOFF32: 4467 case R_PARISC_TLS_TPREL32: 4468 return reloc_class_normal; 4469 } 4470 4471 if (ELF32_R_SYM (rela->r_info) == STN_UNDEF) 4472 return reloc_class_relative; 4473 4474 switch ((int) ELF32_R_TYPE (rela->r_info)) 4475 { 4476 case R_PARISC_IPLT: 4477 return reloc_class_plt; 4478 case R_PARISC_COPY: 4479 return reloc_class_copy; 4480 default: 4481 return reloc_class_normal; 4482 } 4483} 4484 4485/* Finish up the dynamic sections. */ 4486 4487static bfd_boolean 4488elf32_hppa_finish_dynamic_sections (bfd *output_bfd, 4489 struct bfd_link_info *info) 4490{ 4491 bfd *dynobj; 4492 struct elf32_hppa_link_hash_table *htab; 4493 asection *sdyn; 4494 asection * sgot; 4495 4496 htab = hppa_link_hash_table (info); 4497 if (htab == NULL) 4498 return FALSE; 4499 4500 dynobj = htab->etab.dynobj; 4501 4502 sgot = htab->etab.sgot; 4503 /* A broken linker script might have discarded the dynamic sections. 4504 Catch this here so that we do not seg-fault later on. */ 4505 if (sgot != NULL && bfd_is_abs_section (sgot->output_section)) 4506 return FALSE; 4507 4508 sdyn = bfd_get_linker_section (dynobj, ".dynamic"); 4509 4510 if (htab->etab.dynamic_sections_created) 4511 { 4512 Elf32_External_Dyn *dyncon, *dynconend; 4513 4514 if (sdyn == NULL) 4515 abort (); 4516 4517 dyncon = (Elf32_External_Dyn *) sdyn->contents; 4518 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size); 4519 for (; dyncon < dynconend; dyncon++) 4520 { 4521 Elf_Internal_Dyn dyn; 4522 asection *s; 4523 4524 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn); 4525 4526 switch (dyn.d_tag) 4527 { 4528 default: 4529 continue; 4530 4531 case DT_PLTGOT: 4532 /* Use PLTGOT to set the GOT register. */ 4533 dyn.d_un.d_ptr = elf_gp (output_bfd); 4534 break; 4535 4536 case DT_JMPREL: 4537 s = htab->etab.srelplt; 4538 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; 4539 break; 4540 4541 case DT_PLTRELSZ: 4542 s = htab->etab.srelplt; 4543 dyn.d_un.d_val = s->size; 4544 break; 4545 } 4546 4547 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); 4548 } 4549 } 4550 4551 if (sgot != NULL && sgot->size != 0) 4552 { 4553 /* Fill in the first entry in the global offset table. 4554 We use it to point to our dynamic section, if we have one. */ 4555 bfd_put_32 (output_bfd, 4556 sdyn ? sdyn->output_section->vma + sdyn->output_offset : 0, 4557 sgot->contents); 4558 4559 /* The second entry is reserved for use by the dynamic linker. */ 4560 memset (sgot->contents + GOT_ENTRY_SIZE, 0, GOT_ENTRY_SIZE); 4561 4562 /* Set .got entry size. */ 4563 elf_section_data (sgot->output_section) 4564 ->this_hdr.sh_entsize = GOT_ENTRY_SIZE; 4565 } 4566 4567 if (htab->etab.splt != NULL && htab->etab.splt->size != 0) 4568 { 4569 /* Set plt entry size to 0 instead of PLT_ENTRY_SIZE, since we add the 4570 plt stubs and as such the section does not hold a table of fixed-size 4571 entries. */ 4572 elf_section_data (htab->etab.splt->output_section)->this_hdr.sh_entsize = 0; 4573 4574 if (htab->need_plt_stub) 4575 { 4576 /* Set up the .plt stub. */ 4577 memcpy (htab->etab.splt->contents 4578 + htab->etab.splt->size - sizeof (plt_stub), 4579 plt_stub, sizeof (plt_stub)); 4580 4581 if ((htab->etab.splt->output_offset 4582 + htab->etab.splt->output_section->vma 4583 + htab->etab.splt->size) 4584 != (sgot->output_offset 4585 + sgot->output_section->vma)) 4586 { 4587 _bfd_error_handler 4588 (_(".got section not immediately after .plt section")); 4589 return FALSE; 4590 } 4591 } 4592 } 4593 4594 return TRUE; 4595} 4596 4597/* Called when writing out an object file to decide the type of a 4598 symbol. */ 4599static int 4600elf32_hppa_elf_get_symbol_type (Elf_Internal_Sym *elf_sym, int type) 4601{ 4602 if (ELF_ST_TYPE (elf_sym->st_info) == STT_PARISC_MILLI) 4603 return STT_PARISC_MILLI; 4604 else 4605 return type; 4606} 4607 4608/* Misc BFD support code. */ 4609#define bfd_elf32_bfd_is_local_label_name elf_hppa_is_local_label_name 4610#define bfd_elf32_bfd_reloc_type_lookup elf_hppa_reloc_type_lookup 4611#define bfd_elf32_bfd_reloc_name_lookup elf_hppa_reloc_name_lookup 4612#define elf_info_to_howto elf_hppa_info_to_howto 4613#define elf_info_to_howto_rel elf_hppa_info_to_howto_rel 4614 4615/* Stuff for the BFD linker. */ 4616#define bfd_elf32_bfd_final_link elf32_hppa_final_link 4617#define bfd_elf32_bfd_link_hash_table_create elf32_hppa_link_hash_table_create 4618#define elf_backend_adjust_dynamic_symbol elf32_hppa_adjust_dynamic_symbol 4619#define elf_backend_copy_indirect_symbol elf32_hppa_copy_indirect_symbol 4620#define elf_backend_check_relocs elf32_hppa_check_relocs 4621#define elf_backend_create_dynamic_sections elf32_hppa_create_dynamic_sections 4622#define elf_backend_fake_sections elf_hppa_fake_sections 4623#define elf_backend_relocate_section elf32_hppa_relocate_section 4624#define elf_backend_hide_symbol elf32_hppa_hide_symbol 4625#define elf_backend_finish_dynamic_symbol elf32_hppa_finish_dynamic_symbol 4626#define elf_backend_finish_dynamic_sections elf32_hppa_finish_dynamic_sections 4627#define elf_backend_size_dynamic_sections elf32_hppa_size_dynamic_sections 4628#define elf_backend_init_index_section _bfd_elf_init_1_index_section 4629#define elf_backend_gc_mark_hook elf32_hppa_gc_mark_hook 4630#define elf_backend_gc_sweep_hook elf32_hppa_gc_sweep_hook 4631#define elf_backend_grok_prstatus elf32_hppa_grok_prstatus 4632#define elf_backend_grok_psinfo elf32_hppa_grok_psinfo 4633#define elf_backend_object_p elf32_hppa_object_p 4634#define elf_backend_final_write_processing elf_hppa_final_write_processing 4635#define elf_backend_get_symbol_type elf32_hppa_elf_get_symbol_type 4636#define elf_backend_reloc_type_class elf32_hppa_reloc_type_class 4637#define elf_backend_action_discarded elf_hppa_action_discarded 4638 4639#define elf_backend_can_gc_sections 1 4640#define elf_backend_can_refcount 1 4641#define elf_backend_plt_alignment 2 4642#define elf_backend_want_got_plt 0 4643#define elf_backend_plt_readonly 0 4644#define elf_backend_want_plt_sym 0 4645#define elf_backend_got_header_size 8 4646#define elf_backend_want_dynrelro 1 4647#define elf_backend_rela_normal 1 4648#define elf_backend_dtrel_excludes_plt 1 4649#define elf_backend_no_page_alias 1 4650 4651#define TARGET_BIG_SYM hppa_elf32_vec 4652#define TARGET_BIG_NAME "elf32-hppa" 4653#define ELF_ARCH bfd_arch_hppa 4654#define ELF_TARGET_ID HPPA32_ELF_DATA 4655#define ELF_MACHINE_CODE EM_PARISC 4656#define ELF_MAXPAGESIZE 0x1000 4657#define ELF_OSABI ELFOSABI_HPUX 4658#define elf32_bed elf32_hppa_hpux_bed 4659 4660#include "elf32-target.h" 4661 4662#undef TARGET_BIG_SYM 4663#define TARGET_BIG_SYM hppa_elf32_linux_vec 4664#undef TARGET_BIG_NAME 4665#define TARGET_BIG_NAME "elf32-hppa-linux" 4666#undef ELF_OSABI 4667#define ELF_OSABI ELFOSABI_GNU 4668#undef elf32_bed 4669#define elf32_bed elf32_hppa_linux_bed 4670 4671#include "elf32-target.h" 4672 4673#undef TARGET_BIG_SYM 4674#define TARGET_BIG_SYM hppa_elf32_nbsd_vec 4675#undef TARGET_BIG_NAME 4676#define TARGET_BIG_NAME "elf32-hppa-netbsd" 4677#undef ELF_OSABI 4678#define ELF_OSABI ELFOSABI_NETBSD 4679#undef elf32_bed 4680#define elf32_bed elf32_hppa_netbsd_bed 4681 4682#include "elf32-target.h" 4683