1 /* BFD back-end for HP PA-RISC ELF files.
2 Copyright (C) 1990-2017 Free Software Foundation, Inc.
5 Center for Software Science
6 Department of Computer Science
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>
12 This file is part of BFD, the Binary File Descriptor library.
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.
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.
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. */
35 #include "elf32-hppa.h"
37 #include "elf32-hppa.h"
40 /* In order to gain some understanding of code in this file without
41 knowing all the intricate details of the linker, note the
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. */
51 /* We use two hash tables to hold information for linking PA ELF objects.
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.
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.
61 There are a number of different stubs generated by the linker.
69 : addil LR'X - ($PIC_pcrel$0 - 4),%r1
70 : be,n RR'X - ($PIC_pcrel$0 - 8)(%sr4,%r1)
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
77 : ldw RR'lt_ptr+ltoff+4(%r1),%r19 ; get new dlt value.
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
84 : ldw RR'ltoff+4(%r1),%r19 ; get new dlt value.
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.
93 : be 0(%sr0,%r21) ; branch to target
94 : stw %rp,-24(%sp) ; save rp
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.
103 : be 0(%sr0,%r21) ; branch to target
104 : stw %rp,-24(%sp) ; save rp
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
113 : ldw -24(%sp),%rp ; restore the original rp
116 : be,n 0(%sr0,%rp) ; inter-space return. */
119 /* Variable names follow a coding style.
120 Please follow this (Apps Hungarian) style:
122 Structure/Variable Prefix
123 elf_link_hash_table "etab"
124 elf_link_hash_entry "eh"
126 elf32_hppa_link_hash_table "htab"
127 elf32_hppa_link_hash_entry "hh"
129 bfd_hash_table "btab"
132 bfd_hash_table containing stubs "bstab"
133 elf32_hppa_stub_hash_entry "hsh"
135 elf32_hppa_dyn_reloc_entry "hdh"
137 Always remember to use GNU Coding Style. */
139 #define PLT_ENTRY_SIZE 8
140 #define GOT_ENTRY_SIZE 4
141 #define ELF_DYNAMIC_INTERPRETER "/lib/ld.so.1"
143 static const bfd_byte plt_stub[] =
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 */
155 /* Section name for stubs is the associated section name plus this
157 #define STUB_SUFFIX ".stub"
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 #define pc_dynrelocs(hh) 0
168 /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
169 copying dynamic variables from a shared lib into an app's dynbss
170 section, and instead use a dynamic relocation to point into the
172 #define ELIMINATE_COPY_RELOCS 1
174 enum elf32_hppa_stub_type
176 hppa_stub_long_branch,
177 hppa_stub_long_branch_shared,
179 hppa_stub_import_shared,
184 struct elf32_hppa_stub_hash_entry
186 /* Base hash table entry structure. */
187 struct bfd_hash_entry bh_root;
189 /* The stub section. */
192 /* Offset within stub_sec of the beginning of this stub. */
195 /* Given the symbol's value and its section we can determine its final
196 value when building the stubs (so the stub knows where to jump. */
197 bfd_vma target_value;
198 asection *target_section;
200 enum elf32_hppa_stub_type stub_type;
202 /* The symbol table entry, if any, that this was derived from. */
203 struct elf32_hppa_link_hash_entry *hh;
205 /* Where this stub is being called from, or, in the case of combined
206 stub sections, the first input section in the group. */
219 struct elf32_hppa_link_hash_entry
221 struct elf_link_hash_entry eh;
223 /* A pointer to the most recently used stub hash entry against this
225 struct elf32_hppa_stub_hash_entry *hsh_cache;
227 /* Used to count relocations for delayed sizing of relocation
229 struct elf32_hppa_dyn_reloc_entry
231 /* Next relocation in the chain. */
232 struct elf32_hppa_dyn_reloc_entry *hdh_next;
234 /* The input section of the reloc. */
237 /* Number of relocs copied in this section. */
240 #if RELATIVE_DYNRELOCS
241 /* Number of relative relocs copied for the input section. */
242 bfd_size_type relative_count;
246 ENUM_BITFIELD (_tls_type) tls_type : 8;
248 /* Set if this symbol is used by a plabel reloc. */
249 unsigned int plabel:1;
252 struct elf32_hppa_link_hash_table
254 /* The main hash table. */
255 struct elf_link_hash_table etab;
257 /* The stub hash table. */
258 struct bfd_hash_table bstab;
260 /* Linker stub bfd. */
263 /* Linker call-backs. */
264 asection * (*add_stub_section) (const char *, asection *);
265 void (*layout_sections_again) (void);
267 /* Array to keep track of which stub sections have been created, and
268 information on stub grouping. */
271 /* This is the section to which stubs in the group will be
274 /* The stub section. */
278 /* Assorted information used by elf32_hppa_size_stubs. */
279 unsigned int bfd_count;
280 unsigned int top_index;
281 asection **input_list;
282 Elf_Internal_Sym **all_local_syms;
284 /* Used during a final link to store the base of the text and data
285 segments so that we can perform SEGREL relocations. */
286 bfd_vma text_segment_base;
287 bfd_vma data_segment_base;
289 /* Whether we support multiple sub-spaces for shared libs. */
290 unsigned int multi_subspace:1;
292 /* Flags set when various size branches are detected. Used to
293 select suitable defaults for the stub group size. */
294 unsigned int has_12bit_branch:1;
295 unsigned int has_17bit_branch:1;
296 unsigned int has_22bit_branch:1;
298 /* Set if we need a .plt stub to support lazy dynamic linking. */
299 unsigned int need_plt_stub:1;
301 /* Small local sym cache. */
302 struct sym_cache sym_cache;
304 /* Data for LDM relocations. */
307 bfd_signed_vma refcount;
312 /* Various hash macros and functions. */
313 #define hppa_link_hash_table(p) \
314 (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
315 == HPPA32_ELF_DATA ? ((struct elf32_hppa_link_hash_table *) ((p)->hash)) : NULL)
317 #define hppa_elf_hash_entry(ent) \
318 ((struct elf32_hppa_link_hash_entry *)(ent))
320 #define hppa_stub_hash_entry(ent) \
321 ((struct elf32_hppa_stub_hash_entry *)(ent))
323 #define hppa_stub_hash_lookup(table, string, create, copy) \
324 ((struct elf32_hppa_stub_hash_entry *) \
325 bfd_hash_lookup ((table), (string), (create), (copy)))
327 #define hppa_elf_local_got_tls_type(abfd) \
328 ((char *)(elf_local_got_offsets (abfd) + (elf_tdata (abfd)->symtab_hdr.sh_info * 2)))
330 #define hh_name(hh) \
331 (hh ? hh->eh.root.root.string : "<undef>")
333 #define eh_name(eh) \
334 (eh ? eh->root.root.string : "<undef>")
336 /* Assorted hash table functions. */
338 /* Initialize an entry in the stub hash table. */
340 static struct bfd_hash_entry *
341 stub_hash_newfunc (struct bfd_hash_entry *entry,
342 struct bfd_hash_table *table,
345 /* Allocate the structure if it has not already been allocated by a
349 entry = bfd_hash_allocate (table,
350 sizeof (struct elf32_hppa_stub_hash_entry));
355 /* Call the allocation method of the superclass. */
356 entry = bfd_hash_newfunc (entry, table, string);
359 struct elf32_hppa_stub_hash_entry *hsh;
361 /* Initialize the local fields. */
362 hsh = hppa_stub_hash_entry (entry);
363 hsh->stub_sec = NULL;
364 hsh->stub_offset = 0;
365 hsh->target_value = 0;
366 hsh->target_section = NULL;
367 hsh->stub_type = hppa_stub_long_branch;
375 /* Initialize an entry in the link hash table. */
377 static struct bfd_hash_entry *
378 hppa_link_hash_newfunc (struct bfd_hash_entry *entry,
379 struct bfd_hash_table *table,
382 /* Allocate the structure if it has not already been allocated by a
386 entry = bfd_hash_allocate (table,
387 sizeof (struct elf32_hppa_link_hash_entry));
392 /* Call the allocation method of the superclass. */
393 entry = _bfd_elf_link_hash_newfunc (entry, table, string);
396 struct elf32_hppa_link_hash_entry *hh;
398 /* Initialize the local fields. */
399 hh = hppa_elf_hash_entry (entry);
400 hh->hsh_cache = NULL;
401 hh->dyn_relocs = NULL;
403 hh->tls_type = GOT_UNKNOWN;
409 /* Free the derived linker hash table. */
412 elf32_hppa_link_hash_table_free (bfd *obfd)
414 struct elf32_hppa_link_hash_table *htab
415 = (struct elf32_hppa_link_hash_table *) obfd->link.hash;
417 bfd_hash_table_free (&htab->bstab);
418 _bfd_elf_link_hash_table_free (obfd);
421 /* Create the derived linker hash table. The PA ELF port uses the derived
422 hash table to keep information specific to the PA ELF linker (without
423 using static variables). */
425 static struct bfd_link_hash_table *
426 elf32_hppa_link_hash_table_create (bfd *abfd)
428 struct elf32_hppa_link_hash_table *htab;
429 bfd_size_type amt = sizeof (*htab);
431 htab = bfd_zmalloc (amt);
435 if (!_bfd_elf_link_hash_table_init (&htab->etab, abfd, hppa_link_hash_newfunc,
436 sizeof (struct elf32_hppa_link_hash_entry),
443 /* Init the stub hash table too. */
444 if (!bfd_hash_table_init (&htab->bstab, stub_hash_newfunc,
445 sizeof (struct elf32_hppa_stub_hash_entry)))
447 _bfd_elf_link_hash_table_free (abfd);
450 htab->etab.root.hash_table_free = elf32_hppa_link_hash_table_free;
452 htab->text_segment_base = (bfd_vma) -1;
453 htab->data_segment_base = (bfd_vma) -1;
454 return &htab->etab.root;
457 /* Initialize the linker stubs BFD so that we can use it for linker
458 created dynamic sections. */
461 elf32_hppa_init_stub_bfd (bfd *abfd, struct bfd_link_info *info)
463 struct elf32_hppa_link_hash_table *htab = hppa_link_hash_table (info);
465 elf_elfheader (abfd)->e_ident[EI_CLASS] = ELFCLASS32;
466 htab->etab.dynobj = abfd;
469 /* Build a name for an entry in the stub hash table. */
472 hppa_stub_name (const asection *input_section,
473 const asection *sym_sec,
474 const struct elf32_hppa_link_hash_entry *hh,
475 const Elf_Internal_Rela *rela)
482 len = 8 + 1 + strlen (hh_name (hh)) + 1 + 8 + 1;
483 stub_name = bfd_malloc (len);
484 if (stub_name != NULL)
485 sprintf (stub_name, "%08x_%s+%x",
486 input_section->id & 0xffffffff,
488 (int) rela->r_addend & 0xffffffff);
492 len = 8 + 1 + 8 + 1 + 8 + 1 + 8 + 1;
493 stub_name = bfd_malloc (len);
494 if (stub_name != NULL)
495 sprintf (stub_name, "%08x_%x:%x+%x",
496 input_section->id & 0xffffffff,
497 sym_sec->id & 0xffffffff,
498 (int) ELF32_R_SYM (rela->r_info) & 0xffffffff,
499 (int) rela->r_addend & 0xffffffff);
504 /* Look up an entry in the stub hash. Stub entries are cached because
505 creating the stub name takes a bit of time. */
507 static struct elf32_hppa_stub_hash_entry *
508 hppa_get_stub_entry (const asection *input_section,
509 const asection *sym_sec,
510 struct elf32_hppa_link_hash_entry *hh,
511 const Elf_Internal_Rela *rela,
512 struct elf32_hppa_link_hash_table *htab)
514 struct elf32_hppa_stub_hash_entry *hsh_entry;
515 const asection *id_sec;
517 /* If this input section is part of a group of sections sharing one
518 stub section, then use the id of the first section in the group.
519 Stub names need to include a section id, as there may well be
520 more than one stub used to reach say, printf, and we need to
521 distinguish between them. */
522 id_sec = htab->stub_group[input_section->id].link_sec;
524 if (hh != NULL && hh->hsh_cache != NULL
525 && hh->hsh_cache->hh == hh
526 && hh->hsh_cache->id_sec == id_sec)
528 hsh_entry = hh->hsh_cache;
534 stub_name = hppa_stub_name (id_sec, sym_sec, hh, rela);
535 if (stub_name == NULL)
538 hsh_entry = hppa_stub_hash_lookup (&htab->bstab,
539 stub_name, FALSE, FALSE);
541 hh->hsh_cache = hsh_entry;
549 /* Add a new stub entry to the stub hash. Not all fields of the new
550 stub entry are initialised. */
552 static struct elf32_hppa_stub_hash_entry *
553 hppa_add_stub (const char *stub_name,
555 struct elf32_hppa_link_hash_table *htab)
559 struct elf32_hppa_stub_hash_entry *hsh;
561 link_sec = htab->stub_group[section->id].link_sec;
562 stub_sec = htab->stub_group[section->id].stub_sec;
563 if (stub_sec == NULL)
565 stub_sec = htab->stub_group[link_sec->id].stub_sec;
566 if (stub_sec == NULL)
572 namelen = strlen (link_sec->name);
573 len = namelen + sizeof (STUB_SUFFIX);
574 s_name = bfd_alloc (htab->stub_bfd, len);
578 memcpy (s_name, link_sec->name, namelen);
579 memcpy (s_name + namelen, STUB_SUFFIX, sizeof (STUB_SUFFIX));
580 stub_sec = (*htab->add_stub_section) (s_name, link_sec);
581 if (stub_sec == NULL)
583 htab->stub_group[link_sec->id].stub_sec = stub_sec;
585 htab->stub_group[section->id].stub_sec = stub_sec;
588 /* Enter this entry into the linker stub hash table. */
589 hsh = hppa_stub_hash_lookup (&htab->bstab, stub_name,
593 /* xgettext:c-format */
594 _bfd_error_handler (_("%B: cannot create stub entry %s"),
595 section->owner, stub_name);
599 hsh->stub_sec = stub_sec;
600 hsh->stub_offset = 0;
601 hsh->id_sec = link_sec;
605 /* Determine the type of stub needed, if any, for a call. */
607 static enum elf32_hppa_stub_type
608 hppa_type_of_stub (asection *input_sec,
609 const Elf_Internal_Rela *rela,
610 struct elf32_hppa_link_hash_entry *hh,
612 struct bfd_link_info *info)
615 bfd_vma branch_offset;
616 bfd_vma max_branch_offset;
620 && hh->eh.plt.offset != (bfd_vma) -1
621 && hh->eh.dynindx != -1
623 && (bfd_link_pic (info)
624 || !hh->eh.def_regular
625 || hh->eh.root.type == bfd_link_hash_defweak))
627 /* We need an import stub. Decide between hppa_stub_import
628 and hppa_stub_import_shared later. */
629 return hppa_stub_import;
632 /* Determine where the call point is. */
633 location = (input_sec->output_offset
634 + input_sec->output_section->vma
637 branch_offset = destination - location - 8;
638 r_type = ELF32_R_TYPE (rela->r_info);
640 /* Determine if a long branch stub is needed. parisc branch offsets
641 are relative to the second instruction past the branch, ie. +8
642 bytes on from the branch instruction location. The offset is
643 signed and counts in units of 4 bytes. */
644 if (r_type == (unsigned int) R_PARISC_PCREL17F)
645 max_branch_offset = (1 << (17 - 1)) << 2;
647 else if (r_type == (unsigned int) R_PARISC_PCREL12F)
648 max_branch_offset = (1 << (12 - 1)) << 2;
650 else /* R_PARISC_PCREL22F. */
651 max_branch_offset = (1 << (22 - 1)) << 2;
653 if (branch_offset + max_branch_offset >= 2*max_branch_offset)
654 return hppa_stub_long_branch;
656 return hppa_stub_none;
659 /* Build one linker stub as defined by the stub hash table entry GEN_ENTRY.
660 IN_ARG contains the link info pointer. */
662 #define LDIL_R1 0x20200000 /* ldil LR'XXX,%r1 */
663 #define BE_SR4_R1 0xe0202002 /* be,n RR'XXX(%sr4,%r1) */
665 #define BL_R1 0xe8200000 /* b,l .+8,%r1 */
666 #define ADDIL_R1 0x28200000 /* addil LR'XXX,%r1,%r1 */
667 #define DEPI_R1 0xd4201c1e /* depi 0,31,2,%r1 */
669 #define ADDIL_DP 0x2b600000 /* addil LR'XXX,%dp,%r1 */
670 #define LDW_R1_R21 0x48350000 /* ldw RR'XXX(%sr0,%r1),%r21 */
671 #define BV_R0_R21 0xeaa0c000 /* bv %r0(%r21) */
672 #define LDW_R1_R19 0x48330000 /* ldw RR'XXX(%sr0,%r1),%r19 */
674 #define ADDIL_R19 0x2a600000 /* addil LR'XXX,%r19,%r1 */
675 #define LDW_R1_DP 0x483b0000 /* ldw RR'XXX(%sr0,%r1),%dp */
677 #define LDSID_R21_R1 0x02a010a1 /* ldsid (%sr0,%r21),%r1 */
678 #define MTSP_R1 0x00011820 /* mtsp %r1,%sr0 */
679 #define BE_SR0_R21 0xe2a00000 /* be 0(%sr0,%r21) */
680 #define STW_RP 0x6bc23fd1 /* stw %rp,-24(%sr0,%sp) */
682 #define BL22_RP 0xe800a002 /* b,l,n XXX,%rp */
683 #define BL_RP 0xe8400002 /* b,l,n XXX,%rp */
684 #define NOP 0x08000240 /* nop */
685 #define LDW_RP 0x4bc23fd1 /* ldw -24(%sr0,%sp),%rp */
686 #define LDSID_RP_R1 0x004010a1 /* ldsid (%sr0,%rp),%r1 */
687 #define BE_SR0_RP 0xe0400002 /* be,n 0(%sr0,%rp) */
694 #define LDW_R1_DLT LDW_R1_R19
696 #define LDW_R1_DLT LDW_R1_DP
700 hppa_build_one_stub (struct bfd_hash_entry *bh, void *in_arg)
702 struct elf32_hppa_stub_hash_entry *hsh;
703 struct bfd_link_info *info;
704 struct elf32_hppa_link_hash_table *htab;
714 /* Massage our args to the form they really have. */
715 hsh = hppa_stub_hash_entry (bh);
716 info = (struct bfd_link_info *)in_arg;
718 htab = hppa_link_hash_table (info);
722 stub_sec = hsh->stub_sec;
724 /* Make a note of the offset within the stubs for this entry. */
725 hsh->stub_offset = stub_sec->size;
726 loc = stub_sec->contents + hsh->stub_offset;
728 stub_bfd = stub_sec->owner;
730 switch (hsh->stub_type)
732 case hppa_stub_long_branch:
733 /* Create the long branch. A long branch is formed with "ldil"
734 loading the upper bits of the target address into a register,
735 then branching with "be" which adds in the lower bits.
736 The "be" has its delay slot nullified. */
737 sym_value = (hsh->target_value
738 + hsh->target_section->output_offset
739 + hsh->target_section->output_section->vma);
741 val = hppa_field_adjust (sym_value, 0, e_lrsel);
742 insn = hppa_rebuild_insn ((int) LDIL_R1, val, 21);
743 bfd_put_32 (stub_bfd, insn, loc);
745 val = hppa_field_adjust (sym_value, 0, e_rrsel) >> 2;
746 insn = hppa_rebuild_insn ((int) BE_SR4_R1, val, 17);
747 bfd_put_32 (stub_bfd, insn, loc + 4);
752 case hppa_stub_long_branch_shared:
753 /* Branches are relative. This is where we are going to. */
754 sym_value = (hsh->target_value
755 + hsh->target_section->output_offset
756 + hsh->target_section->output_section->vma);
758 /* And this is where we are coming from, more or less. */
759 sym_value -= (hsh->stub_offset
760 + stub_sec->output_offset
761 + stub_sec->output_section->vma);
763 bfd_put_32 (stub_bfd, (bfd_vma) BL_R1, loc);
764 val = hppa_field_adjust (sym_value, (bfd_signed_vma) -8, e_lrsel);
765 insn = hppa_rebuild_insn ((int) ADDIL_R1, val, 21);
766 bfd_put_32 (stub_bfd, insn, loc + 4);
768 val = hppa_field_adjust (sym_value, (bfd_signed_vma) -8, e_rrsel) >> 2;
769 insn = hppa_rebuild_insn ((int) BE_SR4_R1, val, 17);
770 bfd_put_32 (stub_bfd, insn, loc + 8);
774 case hppa_stub_import:
775 case hppa_stub_import_shared:
776 off = hsh->hh->eh.plt.offset;
777 if (off >= (bfd_vma) -2)
780 off &= ~ (bfd_vma) 1;
782 + htab->etab.splt->output_offset
783 + htab->etab.splt->output_section->vma
784 - elf_gp (htab->etab.splt->output_section->owner));
788 if (hsh->stub_type == hppa_stub_import_shared)
791 val = hppa_field_adjust (sym_value, 0, e_lrsel),
792 insn = hppa_rebuild_insn ((int) insn, val, 21);
793 bfd_put_32 (stub_bfd, insn, loc);
795 /* It is critical to use lrsel/rrsel here because we are using
796 two different offsets (+0 and +4) from sym_value. If we use
797 lsel/rsel then with unfortunate sym_values we will round
798 sym_value+4 up to the next 2k block leading to a mis-match
799 between the lsel and rsel value. */
800 val = hppa_field_adjust (sym_value, 0, e_rrsel);
801 insn = hppa_rebuild_insn ((int) LDW_R1_R21, val, 14);
802 bfd_put_32 (stub_bfd, insn, loc + 4);
804 if (htab->multi_subspace)
806 val = hppa_field_adjust (sym_value, (bfd_signed_vma) 4, e_rrsel);
807 insn = hppa_rebuild_insn ((int) LDW_R1_DLT, val, 14);
808 bfd_put_32 (stub_bfd, insn, loc + 8);
810 bfd_put_32 (stub_bfd, (bfd_vma) LDSID_R21_R1, loc + 12);
811 bfd_put_32 (stub_bfd, (bfd_vma) MTSP_R1, loc + 16);
812 bfd_put_32 (stub_bfd, (bfd_vma) BE_SR0_R21, loc + 20);
813 bfd_put_32 (stub_bfd, (bfd_vma) STW_RP, loc + 24);
819 bfd_put_32 (stub_bfd, (bfd_vma) BV_R0_R21, loc + 8);
820 val = hppa_field_adjust (sym_value, (bfd_signed_vma) 4, e_rrsel);
821 insn = hppa_rebuild_insn ((int) LDW_R1_DLT, val, 14);
822 bfd_put_32 (stub_bfd, insn, loc + 12);
829 case hppa_stub_export:
830 /* Branches are relative. This is where we are going to. */
831 sym_value = (hsh->target_value
832 + hsh->target_section->output_offset
833 + hsh->target_section->output_section->vma);
835 /* And this is where we are coming from. */
836 sym_value -= (hsh->stub_offset
837 + stub_sec->output_offset
838 + stub_sec->output_section->vma);
840 if (sym_value - 8 + (1 << (17 + 1)) >= (1 << (17 + 2))
841 && (!htab->has_22bit_branch
842 || sym_value - 8 + (1 << (22 + 1)) >= (1 << (22 + 2))))
845 /* xgettext:c-format */
846 (_("%B(%A+%#Lx): cannot reach %s, recompile with -ffunction-sections"),
847 hsh->target_section->owner,
850 hsh->bh_root.string);
851 bfd_set_error (bfd_error_bad_value);
855 val = hppa_field_adjust (sym_value, (bfd_signed_vma) -8, e_fsel) >> 2;
856 if (!htab->has_22bit_branch)
857 insn = hppa_rebuild_insn ((int) BL_RP, val, 17);
859 insn = hppa_rebuild_insn ((int) BL22_RP, val, 22);
860 bfd_put_32 (stub_bfd, insn, loc);
862 bfd_put_32 (stub_bfd, (bfd_vma) NOP, loc + 4);
863 bfd_put_32 (stub_bfd, (bfd_vma) LDW_RP, loc + 8);
864 bfd_put_32 (stub_bfd, (bfd_vma) LDSID_RP_R1, loc + 12);
865 bfd_put_32 (stub_bfd, (bfd_vma) MTSP_R1, loc + 16);
866 bfd_put_32 (stub_bfd, (bfd_vma) BE_SR0_RP, loc + 20);
868 /* Point the function symbol at the stub. */
869 hsh->hh->eh.root.u.def.section = stub_sec;
870 hsh->hh->eh.root.u.def.value = stub_sec->size;
880 stub_sec->size += size;
905 /* As above, but don't actually build the stub. Just bump offset so
906 we know stub section sizes. */
909 hppa_size_one_stub (struct bfd_hash_entry *bh, void *in_arg)
911 struct elf32_hppa_stub_hash_entry *hsh;
912 struct elf32_hppa_link_hash_table *htab;
915 /* Massage our args to the form they really have. */
916 hsh = hppa_stub_hash_entry (bh);
919 if (hsh->stub_type == hppa_stub_long_branch)
921 else if (hsh->stub_type == hppa_stub_long_branch_shared)
923 else if (hsh->stub_type == hppa_stub_export)
925 else /* hppa_stub_import or hppa_stub_import_shared. */
927 if (htab->multi_subspace)
933 hsh->stub_sec->size += size;
937 /* Return nonzero if ABFD represents an HPPA ELF32 file.
938 Additionally we set the default architecture and machine. */
941 elf32_hppa_object_p (bfd *abfd)
943 Elf_Internal_Ehdr * i_ehdrp;
946 i_ehdrp = elf_elfheader (abfd);
947 if (strcmp (bfd_get_target (abfd), "elf32-hppa-linux") == 0)
949 /* GCC on hppa-linux produces binaries with OSABI=GNU,
950 but the kernel produces corefiles with OSABI=SysV. */
951 if (i_ehdrp->e_ident[EI_OSABI] != ELFOSABI_GNU &&
952 i_ehdrp->e_ident[EI_OSABI] != ELFOSABI_NONE) /* aka SYSV */
955 else if (strcmp (bfd_get_target (abfd), "elf32-hppa-netbsd") == 0)
957 /* GCC on hppa-netbsd produces binaries with OSABI=NetBSD,
958 but the kernel produces corefiles with OSABI=SysV. */
959 if (i_ehdrp->e_ident[EI_OSABI] != ELFOSABI_NETBSD &&
960 i_ehdrp->e_ident[EI_OSABI] != ELFOSABI_NONE) /* aka SYSV */
965 if (i_ehdrp->e_ident[EI_OSABI] != ELFOSABI_HPUX)
969 flags = i_ehdrp->e_flags;
970 switch (flags & (EF_PARISC_ARCH | EF_PARISC_WIDE))
973 return bfd_default_set_arch_mach (abfd, bfd_arch_hppa, 10);
975 return bfd_default_set_arch_mach (abfd, bfd_arch_hppa, 11);
977 return bfd_default_set_arch_mach (abfd, bfd_arch_hppa, 20);
978 case EFA_PARISC_2_0 | EF_PARISC_WIDE:
979 return bfd_default_set_arch_mach (abfd, bfd_arch_hppa, 25);
984 /* Create the .plt and .got sections, and set up our hash table
985 short-cuts to various dynamic sections. */
988 elf32_hppa_create_dynamic_sections (bfd *abfd, struct bfd_link_info *info)
990 struct elf32_hppa_link_hash_table *htab;
991 struct elf_link_hash_entry *eh;
993 /* Don't try to create the .plt and .got twice. */
994 htab = hppa_link_hash_table (info);
997 if (htab->etab.splt != NULL)
1000 /* Call the generic code to do most of the work. */
1001 if (! _bfd_elf_create_dynamic_sections (abfd, info))
1004 /* hppa-linux needs _GLOBAL_OFFSET_TABLE_ to be visible from the main
1005 application, because __canonicalize_funcptr_for_compare needs it. */
1006 eh = elf_hash_table (info)->hgot;
1007 eh->forced_local = 0;
1008 eh->other = STV_DEFAULT;
1009 return bfd_elf_link_record_dynamic_symbol (info, eh);
1012 /* Copy the extra info we tack onto an elf_link_hash_entry. */
1015 elf32_hppa_copy_indirect_symbol (struct bfd_link_info *info,
1016 struct elf_link_hash_entry *eh_dir,
1017 struct elf_link_hash_entry *eh_ind)
1019 struct elf32_hppa_link_hash_entry *hh_dir, *hh_ind;
1021 hh_dir = hppa_elf_hash_entry (eh_dir);
1022 hh_ind = hppa_elf_hash_entry (eh_ind);
1024 if (hh_ind->dyn_relocs != NULL
1025 && eh_ind->root.type == bfd_link_hash_indirect)
1027 if (hh_dir->dyn_relocs != NULL)
1029 struct elf32_hppa_dyn_reloc_entry **hdh_pp;
1030 struct elf32_hppa_dyn_reloc_entry *hdh_p;
1032 /* Add reloc counts against the indirect sym to the direct sym
1033 list. Merge any entries against the same section. */
1034 for (hdh_pp = &hh_ind->dyn_relocs; (hdh_p = *hdh_pp) != NULL; )
1036 struct elf32_hppa_dyn_reloc_entry *hdh_q;
1038 for (hdh_q = hh_dir->dyn_relocs;
1040 hdh_q = hdh_q->hdh_next)
1041 if (hdh_q->sec == hdh_p->sec)
1043 #if RELATIVE_DYNRELOCS
1044 hdh_q->relative_count += hdh_p->relative_count;
1046 hdh_q->count += hdh_p->count;
1047 *hdh_pp = hdh_p->hdh_next;
1051 hdh_pp = &hdh_p->hdh_next;
1053 *hdh_pp = hh_dir->dyn_relocs;
1056 hh_dir->dyn_relocs = hh_ind->dyn_relocs;
1057 hh_ind->dyn_relocs = NULL;
1060 if (ELIMINATE_COPY_RELOCS
1061 && eh_ind->root.type != bfd_link_hash_indirect
1062 && eh_dir->dynamic_adjusted)
1064 /* If called to transfer flags for a weakdef during processing
1065 of elf_adjust_dynamic_symbol, don't copy non_got_ref.
1066 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
1067 if (eh_dir->versioned != versioned_hidden)
1068 eh_dir->ref_dynamic |= eh_ind->ref_dynamic;
1069 eh_dir->ref_regular |= eh_ind->ref_regular;
1070 eh_dir->ref_regular_nonweak |= eh_ind->ref_regular_nonweak;
1071 eh_dir->needs_plt |= eh_ind->needs_plt;
1075 if (eh_ind->root.type == bfd_link_hash_indirect)
1077 hh_dir->plabel |= hh_ind->plabel;
1078 hh_dir->tls_type |= hh_ind->tls_type;
1079 hh_ind->tls_type = GOT_UNKNOWN;
1082 _bfd_elf_link_hash_copy_indirect (info, eh_dir, eh_ind);
1087 elf32_hppa_optimized_tls_reloc (struct bfd_link_info *info ATTRIBUTE_UNUSED,
1088 int r_type, int is_local ATTRIBUTE_UNUSED)
1090 /* For now we don't support linker optimizations. */
1094 /* Return a pointer to the local GOT, PLT and TLS reference counts
1095 for ABFD. Returns NULL if the storage allocation fails. */
1097 static bfd_signed_vma *
1098 hppa32_elf_local_refcounts (bfd *abfd)
1100 Elf_Internal_Shdr *symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
1101 bfd_signed_vma *local_refcounts;
1103 local_refcounts = elf_local_got_refcounts (abfd);
1104 if (local_refcounts == NULL)
1108 /* Allocate space for local GOT and PLT reference
1109 counts. Done this way to save polluting elf_obj_tdata
1110 with another target specific pointer. */
1111 size = symtab_hdr->sh_info;
1112 size *= 2 * sizeof (bfd_signed_vma);
1113 /* Add in space to store the local GOT TLS types. */
1114 size += symtab_hdr->sh_info;
1115 local_refcounts = bfd_zalloc (abfd, size);
1116 if (local_refcounts == NULL)
1118 elf_local_got_refcounts (abfd) = local_refcounts;
1119 memset (hppa_elf_local_got_tls_type (abfd), GOT_UNKNOWN,
1120 symtab_hdr->sh_info);
1122 return local_refcounts;
1126 /* Look through the relocs for a section during the first phase, and
1127 calculate needed space in the global offset table, procedure linkage
1128 table, and dynamic reloc sections. At this point we haven't
1129 necessarily read all the input files. */
1132 elf32_hppa_check_relocs (bfd *abfd,
1133 struct bfd_link_info *info,
1135 const Elf_Internal_Rela *relocs)
1137 Elf_Internal_Shdr *symtab_hdr;
1138 struct elf_link_hash_entry **eh_syms;
1139 const Elf_Internal_Rela *rela;
1140 const Elf_Internal_Rela *rela_end;
1141 struct elf32_hppa_link_hash_table *htab;
1144 if (bfd_link_relocatable (info))
1147 htab = hppa_link_hash_table (info);
1150 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
1151 eh_syms = elf_sym_hashes (abfd);
1154 rela_end = relocs + sec->reloc_count;
1155 for (rela = relocs; rela < rela_end; rela++)
1164 unsigned int r_symndx, r_type;
1165 struct elf32_hppa_link_hash_entry *hh;
1168 r_symndx = ELF32_R_SYM (rela->r_info);
1170 if (r_symndx < symtab_hdr->sh_info)
1174 hh = hppa_elf_hash_entry (eh_syms[r_symndx - symtab_hdr->sh_info]);
1175 while (hh->eh.root.type == bfd_link_hash_indirect
1176 || hh->eh.root.type == bfd_link_hash_warning)
1177 hh = hppa_elf_hash_entry (hh->eh.root.u.i.link);
1180 r_type = ELF32_R_TYPE (rela->r_info);
1181 r_type = elf32_hppa_optimized_tls_reloc (info, r_type, hh == NULL);
1185 case R_PARISC_DLTIND14F:
1186 case R_PARISC_DLTIND14R:
1187 case R_PARISC_DLTIND21L:
1188 /* This symbol requires a global offset table entry. */
1189 need_entry = NEED_GOT;
1192 case R_PARISC_PLABEL14R: /* "Official" procedure labels. */
1193 case R_PARISC_PLABEL21L:
1194 case R_PARISC_PLABEL32:
1195 /* If the addend is non-zero, we break badly. */
1196 if (rela->r_addend != 0)
1199 /* If we are creating a shared library, then we need to
1200 create a PLT entry for all PLABELs, because PLABELs with
1201 local symbols may be passed via a pointer to another
1202 object. Additionally, output a dynamic relocation
1203 pointing to the PLT entry.
1205 For executables, the original 32-bit ABI allowed two
1206 different styles of PLABELs (function pointers): For
1207 global functions, the PLABEL word points into the .plt
1208 two bytes past a (function address, gp) pair, and for
1209 local functions the PLABEL points directly at the
1210 function. The magic +2 for the first type allows us to
1211 differentiate between the two. As you can imagine, this
1212 is a real pain when it comes to generating code to call
1213 functions indirectly or to compare function pointers.
1214 We avoid the mess by always pointing a PLABEL into the
1215 .plt, even for local functions. */
1216 need_entry = PLT_PLABEL | NEED_PLT;
1217 if (bfd_link_pic (info))
1218 need_entry |= NEED_DYNREL;
1221 case R_PARISC_PCREL12F:
1222 htab->has_12bit_branch = 1;
1225 case R_PARISC_PCREL17C:
1226 case R_PARISC_PCREL17F:
1227 htab->has_17bit_branch = 1;
1230 case R_PARISC_PCREL22F:
1231 htab->has_22bit_branch = 1;
1233 /* Function calls might need to go through the .plt, and
1234 might require long branch stubs. */
1237 /* We know local syms won't need a .plt entry, and if
1238 they need a long branch stub we can't guarantee that
1239 we can reach the stub. So just flag an error later
1240 if we're doing a shared link and find we need a long
1246 /* Global symbols will need a .plt entry if they remain
1247 global, and in most cases won't need a long branch
1248 stub. Unfortunately, we have to cater for the case
1249 where a symbol is forced local by versioning, or due
1250 to symbolic linking, and we lose the .plt entry. */
1251 need_entry = NEED_PLT;
1252 if (hh->eh.type == STT_PARISC_MILLI)
1257 case R_PARISC_SEGBASE: /* Used to set segment base. */
1258 case R_PARISC_SEGREL32: /* Relative reloc, used for unwind. */
1259 case R_PARISC_PCREL14F: /* PC relative load/store. */
1260 case R_PARISC_PCREL14R:
1261 case R_PARISC_PCREL17R: /* External branches. */
1262 case R_PARISC_PCREL21L: /* As above, and for load/store too. */
1263 case R_PARISC_PCREL32:
1264 /* We don't need to propagate the relocation if linking a
1265 shared object since these are section relative. */
1268 case R_PARISC_DPREL14F: /* Used for gp rel data load/store. */
1269 case R_PARISC_DPREL14R:
1270 case R_PARISC_DPREL21L:
1271 if (bfd_link_pic (info))
1274 /* xgettext:c-format */
1275 (_("%B: relocation %s can not be used when making a shared object; recompile with -fPIC"),
1277 elf_hppa_howto_table[r_type].name);
1278 bfd_set_error (bfd_error_bad_value);
1283 case R_PARISC_DIR17F: /* Used for external branches. */
1284 case R_PARISC_DIR17R:
1285 case R_PARISC_DIR14F: /* Used for load/store from absolute locn. */
1286 case R_PARISC_DIR14R:
1287 case R_PARISC_DIR21L: /* As above, and for ext branches too. */
1288 case R_PARISC_DIR32: /* .word relocs. */
1289 /* We may want to output a dynamic relocation later. */
1290 need_entry = NEED_DYNREL;
1293 /* This relocation describes the C++ object vtable hierarchy.
1294 Reconstruct it for later use during GC. */
1295 case R_PARISC_GNU_VTINHERIT:
1296 if (!bfd_elf_gc_record_vtinherit (abfd, sec, &hh->eh, rela->r_offset))
1300 /* This relocation describes which C++ vtable entries are actually
1301 used. Record for later use during GC. */
1302 case R_PARISC_GNU_VTENTRY:
1303 BFD_ASSERT (hh != NULL);
1305 && !bfd_elf_gc_record_vtentry (abfd, sec, &hh->eh, rela->r_addend))
1309 case R_PARISC_TLS_GD21L:
1310 case R_PARISC_TLS_GD14R:
1311 case R_PARISC_TLS_LDM21L:
1312 case R_PARISC_TLS_LDM14R:
1313 need_entry = NEED_GOT;
1316 case R_PARISC_TLS_IE21L:
1317 case R_PARISC_TLS_IE14R:
1318 if (bfd_link_dll (info))
1319 info->flags |= DF_STATIC_TLS;
1320 need_entry = NEED_GOT;
1327 /* Now carry out our orders. */
1328 if (need_entry & NEED_GOT)
1330 int tls_type = GOT_NORMAL;
1336 case R_PARISC_TLS_GD21L:
1337 case R_PARISC_TLS_GD14R:
1338 tls_type = GOT_TLS_GD;
1340 case R_PARISC_TLS_LDM21L:
1341 case R_PARISC_TLS_LDM14R:
1342 tls_type = GOT_TLS_LDM;
1344 case R_PARISC_TLS_IE21L:
1345 case R_PARISC_TLS_IE14R:
1346 tls_type = GOT_TLS_IE;
1350 /* Allocate space for a GOT entry, as well as a dynamic
1351 relocation for this entry. */
1352 if (htab->etab.sgot == NULL)
1354 if (!elf32_hppa_create_dynamic_sections (htab->etab.dynobj, info))
1360 if (tls_type == GOT_TLS_LDM)
1361 htab->tls_ldm_got.refcount += 1;
1363 hh->eh.got.refcount += 1;
1364 hh->tls_type |= tls_type;
1368 bfd_signed_vma *local_got_refcounts;
1370 /* This is a global offset table entry for a local symbol. */
1371 local_got_refcounts = hppa32_elf_local_refcounts (abfd);
1372 if (local_got_refcounts == NULL)
1374 if (tls_type == GOT_TLS_LDM)
1375 htab->tls_ldm_got.refcount += 1;
1377 local_got_refcounts[r_symndx] += 1;
1379 hppa_elf_local_got_tls_type (abfd) [r_symndx] |= tls_type;
1383 if (need_entry & NEED_PLT)
1385 /* If we are creating a shared library, and this is a reloc
1386 against a weak symbol or a global symbol in a dynamic
1387 object, then we will be creating an import stub and a
1388 .plt entry for the symbol. Similarly, on a normal link
1389 to symbols defined in a dynamic object we'll need the
1390 import stub and a .plt entry. We don't know yet whether
1391 the symbol is defined or not, so make an entry anyway and
1392 clean up later in adjust_dynamic_symbol. */
1393 if ((sec->flags & SEC_ALLOC) != 0)
1397 hh->eh.needs_plt = 1;
1398 hh->eh.plt.refcount += 1;
1400 /* If this .plt entry is for a plabel, mark it so
1401 that adjust_dynamic_symbol will keep the entry
1402 even if it appears to be local. */
1403 if (need_entry & PLT_PLABEL)
1406 else if (need_entry & PLT_PLABEL)
1408 bfd_signed_vma *local_got_refcounts;
1409 bfd_signed_vma *local_plt_refcounts;
1411 local_got_refcounts = hppa32_elf_local_refcounts (abfd);
1412 if (local_got_refcounts == NULL)
1414 local_plt_refcounts = (local_got_refcounts
1415 + symtab_hdr->sh_info);
1416 local_plt_refcounts[r_symndx] += 1;
1421 if ((need_entry & NEED_DYNREL) != 0
1422 && (sec->flags & SEC_ALLOC) != 0)
1424 /* Flag this symbol as having a non-got, non-plt reference
1425 so that we generate copy relocs if it turns out to be
1427 if (hh != NULL && !bfd_link_pic (info))
1428 hh->eh.non_got_ref = 1;
1430 /* If we are creating a shared library then we need to copy
1431 the reloc into the shared library. However, if we are
1432 linking with -Bsymbolic, we need only copy absolute
1433 relocs or relocs against symbols that are not defined in
1434 an object we are including in the link. PC- or DP- or
1435 DLT-relative relocs against any local sym or global sym
1436 with DEF_REGULAR set, can be discarded. At this point we
1437 have not seen all the input files, so it is possible that
1438 DEF_REGULAR is not set now but will be set later (it is
1439 never cleared). We account for that possibility below by
1440 storing information in the dyn_relocs field of the
1443 A similar situation to the -Bsymbolic case occurs when
1444 creating shared libraries and symbol visibility changes
1445 render the symbol local.
1447 As it turns out, all the relocs we will be creating here
1448 are absolute, so we cannot remove them on -Bsymbolic
1449 links or visibility changes anyway. A STUB_REL reloc
1450 is absolute too, as in that case it is the reloc in the
1451 stub we will be creating, rather than copying the PCREL
1452 reloc in the branch.
1454 If on the other hand, we are creating an executable, we
1455 may need to keep relocations for symbols satisfied by a
1456 dynamic library if we manage to avoid copy relocs for the
1458 if ((bfd_link_pic (info)
1459 && (IS_ABSOLUTE_RELOC (r_type)
1461 && (!SYMBOLIC_BIND (info, &hh->eh)
1462 || hh->eh.root.type == bfd_link_hash_defweak
1463 || !hh->eh.def_regular))))
1464 || (ELIMINATE_COPY_RELOCS
1465 && !bfd_link_pic (info)
1467 && (hh->eh.root.type == bfd_link_hash_defweak
1468 || !hh->eh.def_regular)))
1470 struct elf32_hppa_dyn_reloc_entry *hdh_p;
1471 struct elf32_hppa_dyn_reloc_entry **hdh_head;
1473 /* Create a reloc section in dynobj and make room for
1477 sreloc = _bfd_elf_make_dynamic_reloc_section
1478 (sec, htab->etab.dynobj, 2, abfd, /*rela?*/ TRUE);
1482 bfd_set_error (bfd_error_bad_value);
1487 /* If this is a global symbol, we count the number of
1488 relocations we need for this symbol. */
1491 hdh_head = &hh->dyn_relocs;
1495 /* Track dynamic relocs needed for local syms too.
1496 We really need local syms available to do this
1500 Elf_Internal_Sym *isym;
1502 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
1507 sr = bfd_section_from_elf_index (abfd, isym->st_shndx);
1511 vpp = &elf_section_data (sr)->local_dynrel;
1512 hdh_head = (struct elf32_hppa_dyn_reloc_entry **) vpp;
1516 if (hdh_p == NULL || hdh_p->sec != sec)
1518 hdh_p = bfd_alloc (htab->etab.dynobj, sizeof *hdh_p);
1521 hdh_p->hdh_next = *hdh_head;
1525 #if RELATIVE_DYNRELOCS
1526 hdh_p->relative_count = 0;
1531 #if RELATIVE_DYNRELOCS
1532 if (!IS_ABSOLUTE_RELOC (rtype))
1533 hdh_p->relative_count += 1;
1542 /* Return the section that should be marked against garbage collection
1543 for a given relocation. */
1546 elf32_hppa_gc_mark_hook (asection *sec,
1547 struct bfd_link_info *info,
1548 Elf_Internal_Rela *rela,
1549 struct elf_link_hash_entry *hh,
1550 Elf_Internal_Sym *sym)
1553 switch ((unsigned int) ELF32_R_TYPE (rela->r_info))
1555 case R_PARISC_GNU_VTINHERIT:
1556 case R_PARISC_GNU_VTENTRY:
1560 return _bfd_elf_gc_mark_hook (sec, info, rela, hh, sym);
1563 /* Support for core dump NOTE sections. */
1566 elf32_hppa_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
1571 switch (note->descsz)
1576 case 396: /* Linux/hppa */
1578 elf_tdata (abfd)->core->signal = bfd_get_16 (abfd, note->descdata + 12);
1581 elf_tdata (abfd)->core->lwpid = bfd_get_32 (abfd, note->descdata + 24);
1590 /* Make a ".reg/999" section. */
1591 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
1592 size, note->descpos + offset);
1596 elf32_hppa_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
1598 switch (note->descsz)
1603 case 124: /* Linux/hppa elf_prpsinfo. */
1604 elf_tdata (abfd)->core->program
1605 = _bfd_elfcore_strndup (abfd, note->descdata + 28, 16);
1606 elf_tdata (abfd)->core->command
1607 = _bfd_elfcore_strndup (abfd, note->descdata + 44, 80);
1610 /* Note that for some reason, a spurious space is tacked
1611 onto the end of the args in some (at least one anyway)
1612 implementations, so strip it off if it exists. */
1614 char *command = elf_tdata (abfd)->core->command;
1615 int n = strlen (command);
1617 if (0 < n && command[n - 1] == ' ')
1618 command[n - 1] = '\0';
1624 /* Our own version of hide_symbol, so that we can keep plt entries for
1628 elf32_hppa_hide_symbol (struct bfd_link_info *info,
1629 struct elf_link_hash_entry *eh,
1630 bfd_boolean force_local)
1634 eh->forced_local = 1;
1635 if (eh->dynindx != -1)
1638 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
1642 /* PR 16082: Remove version information from hidden symbol. */
1643 eh->verinfo.verdef = NULL;
1644 eh->verinfo.vertree = NULL;
1647 /* STT_GNU_IFUNC symbol must go through PLT. */
1648 if (! hppa_elf_hash_entry (eh)->plabel
1649 && eh->type != STT_GNU_IFUNC)
1652 eh->plt = elf_hash_table (info)->init_plt_offset;
1656 /* Find any dynamic relocs that apply to read-only sections. */
1659 readonly_dynrelocs (struct elf_link_hash_entry *eh)
1661 struct elf32_hppa_link_hash_entry *hh;
1662 struct elf32_hppa_dyn_reloc_entry *hdh_p;
1664 hh = hppa_elf_hash_entry (eh);
1665 for (hdh_p = hh->dyn_relocs; hdh_p != NULL; hdh_p = hdh_p->hdh_next)
1667 asection *sec = hdh_p->sec->output_section;
1669 if (sec != NULL && (sec->flags & SEC_READONLY) != 0)
1675 /* Return true if we have dynamic relocs against H or any of its weak
1676 aliases, that apply to read-only sections. Cannot be used after
1677 size_dynamic_sections. */
1680 alias_readonly_dynrelocs (struct elf_link_hash_entry *eh)
1682 struct elf32_hppa_link_hash_entry *hh = hppa_elf_hash_entry (eh);
1685 if (readonly_dynrelocs (&hh->eh))
1687 hh = hppa_elf_hash_entry (hh->eh.u.alias);
1688 } while (hh != NULL && &hh->eh != eh);
1693 /* Adjust a symbol defined by a dynamic object and referenced by a
1694 regular object. The current definition is in some section of the
1695 dynamic object, but we're not including those sections. We have to
1696 change the definition to something the rest of the link can
1700 elf32_hppa_adjust_dynamic_symbol (struct bfd_link_info *info,
1701 struct elf_link_hash_entry *eh)
1703 struct elf32_hppa_link_hash_table *htab;
1704 asection *sec, *srel;
1706 /* If this is a function, put it in the procedure linkage table. We
1707 will fill in the contents of the procedure linkage table later. */
1708 if (eh->type == STT_FUNC
1711 bfd_boolean local = (SYMBOL_CALLS_LOCAL (info, eh)
1712 || UNDEFWEAK_NO_DYNAMIC_RELOC (info, eh));
1713 /* Discard dyn_relocs when non-pic if we've decided that a
1714 function symbol is local. */
1715 if (!bfd_link_pic (info) && local)
1716 hppa_elf_hash_entry (eh)->dyn_relocs = NULL;
1718 /* If the symbol is used by a plabel, we must allocate a PLT slot.
1719 The refcounts are not reliable when it has been hidden since
1720 hide_symbol can be called before the plabel flag is set. */
1721 if (hppa_elf_hash_entry (eh)->plabel)
1722 eh->plt.refcount = 1;
1724 /* Note that unlike some other backends, the refcount is not
1725 incremented for a non-call (and non-plabel) function reference. */
1726 else if (eh->plt.refcount <= 0
1729 /* The .plt entry is not needed when:
1730 a) Garbage collection has removed all references to the
1732 b) We know for certain the symbol is defined in this
1733 object, and it's not a weak definition, nor is the symbol
1734 used by a plabel relocation. Either this object is the
1735 application or we are doing a shared symbolic link. */
1736 eh->plt.offset = (bfd_vma) -1;
1740 /* Unlike other targets, elf32-hppa.c does not define a function
1741 symbol in a non-pic executable on PLT stub code, so we don't
1742 have a local definition in that case. ie. dyn_relocs can't
1745 /* Function symbols can't have copy relocs. */
1749 eh->plt.offset = (bfd_vma) -1;
1751 /* If this is a weak symbol, and there is a real definition, the
1752 processor independent code will have arranged for us to see the
1753 real definition first, and we can just use the same value. */
1754 if (eh->is_weakalias)
1756 struct elf_link_hash_entry *def = weakdef (eh);
1757 BFD_ASSERT (def->root.type == bfd_link_hash_defined);
1758 eh->root.u.def.section = def->root.u.def.section;
1759 eh->root.u.def.value = def->root.u.def.value;
1760 if (ELIMINATE_COPY_RELOCS)
1761 eh->non_got_ref = def->non_got_ref;
1765 /* This is a reference to a symbol defined by a dynamic object which
1766 is not a function. */
1768 /* If we are creating a shared library, we must presume that the
1769 only references to the symbol are via the global offset table.
1770 For such cases we need not do anything here; the relocations will
1771 be handled correctly by relocate_section. */
1772 if (bfd_link_pic (info))
1775 /* If there are no references to this symbol that do not use the
1776 GOT, we don't need to generate a copy reloc. */
1777 if (!eh->non_got_ref)
1780 /* If -z nocopyreloc was given, we won't generate them either. */
1781 if (info->nocopyreloc)
1784 if (ELIMINATE_COPY_RELOCS
1785 && !alias_readonly_dynrelocs (eh))
1787 /* If we didn't find any dynamic relocs in read-only sections, then
1788 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
1792 /* We must allocate the symbol in our .dynbss section, which will
1793 become part of the .bss section of the executable. There will be
1794 an entry for this symbol in the .dynsym section. The dynamic
1795 object will contain position independent code, so all references
1796 from the dynamic object to this symbol will go through the global
1797 offset table. The dynamic linker will use the .dynsym entry to
1798 determine the address it must put in the global offset table, so
1799 both the dynamic object and the regular object will refer to the
1800 same memory location for the variable. */
1802 htab = hppa_link_hash_table (info);
1806 /* We must generate a COPY reloc to tell the dynamic linker to
1807 copy the initial value out of the dynamic object and into the
1808 runtime process image. */
1809 if ((eh->root.u.def.section->flags & SEC_READONLY) != 0)
1811 sec = htab->etab.sdynrelro;
1812 srel = htab->etab.sreldynrelro;
1816 sec = htab->etab.sdynbss;
1817 srel = htab->etab.srelbss;
1819 if ((eh->root.u.def.section->flags & SEC_ALLOC) != 0 && eh->size != 0)
1821 srel->size += sizeof (Elf32_External_Rela);
1825 /* We no longer want dyn_relocs. */
1826 hppa_elf_hash_entry (eh)->dyn_relocs = NULL;
1827 return _bfd_elf_adjust_dynamic_copy (info, eh, sec);
1830 /* If EH is undefined, make it dynamic if that makes sense. */
1833 ensure_undef_dynamic (struct bfd_link_info *info,
1834 struct elf_link_hash_entry *eh)
1836 struct elf_link_hash_table *htab = elf_hash_table (info);
1838 if (htab->dynamic_sections_created
1839 && (eh->root.type == bfd_link_hash_undefweak
1840 || eh->root.type == bfd_link_hash_undefined)
1841 && eh->dynindx == -1
1842 && !eh->forced_local
1843 && eh->type != STT_PARISC_MILLI
1844 && !UNDEFWEAK_NO_DYNAMIC_RELOC (info, eh)
1845 && ELF_ST_VISIBILITY (eh->other) == STV_DEFAULT)
1846 return bfd_elf_link_record_dynamic_symbol (info, eh);
1850 /* Allocate space in the .plt for entries that won't have relocations.
1851 ie. plabel entries. */
1854 allocate_plt_static (struct elf_link_hash_entry *eh, void *inf)
1856 struct bfd_link_info *info;
1857 struct elf32_hppa_link_hash_table *htab;
1858 struct elf32_hppa_link_hash_entry *hh;
1861 if (eh->root.type == bfd_link_hash_indirect)
1864 info = (struct bfd_link_info *) inf;
1865 hh = hppa_elf_hash_entry (eh);
1866 htab = hppa_link_hash_table (info);
1870 if (htab->etab.dynamic_sections_created
1871 && eh->plt.refcount > 0)
1873 if (!ensure_undef_dynamic (info, eh))
1876 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, bfd_link_pic (info), eh))
1878 /* Allocate these later. From this point on, h->plabel
1879 means that the plt entry is only used by a plabel.
1880 We'll be using a normal plt entry for this symbol, so
1881 clear the plabel indicator. */
1885 else if (hh->plabel)
1887 /* Make an entry in the .plt section for plabel references
1888 that won't have a .plt entry for other reasons. */
1889 sec = htab->etab.splt;
1890 eh->plt.offset = sec->size;
1891 sec->size += PLT_ENTRY_SIZE;
1892 if (bfd_link_pic (info))
1893 htab->etab.srelplt->size += sizeof (Elf32_External_Rela);
1897 /* No .plt entry needed. */
1898 eh->plt.offset = (bfd_vma) -1;
1904 eh->plt.offset = (bfd_vma) -1;
1911 /* Calculate size of GOT entries for symbol given its TLS_TYPE. */
1913 static inline unsigned int
1914 got_entries_needed (int tls_type)
1916 unsigned int need = 0;
1918 if ((tls_type & GOT_NORMAL) != 0)
1919 need += GOT_ENTRY_SIZE;
1920 if ((tls_type & GOT_TLS_GD) != 0)
1921 need += GOT_ENTRY_SIZE * 2;
1922 if ((tls_type & GOT_TLS_IE) != 0)
1923 need += GOT_ENTRY_SIZE;
1927 /* Calculate size of relocs needed for symbol given its TLS_TYPE and
1928 NEEDed GOT entries. KNOWN says a TPREL offset can be calculated
1931 static inline unsigned int
1932 got_relocs_needed (int tls_type, unsigned int need, bfd_boolean known)
1934 /* All the entries we allocated need relocs.
1935 Except IE in executable with a local symbol. We could also omit
1936 the DTPOFF reloc on the second word of a GD entry under the same
1937 condition as that for IE, but ld.so might want to differentiate
1938 LD and GD entries at some stage. */
1939 if ((tls_type & GOT_TLS_IE) != 0 && known)
1940 need -= GOT_ENTRY_SIZE;
1941 return need * sizeof (Elf32_External_Rela) / GOT_ENTRY_SIZE;
1944 /* Allocate space in .plt, .got and associated reloc sections for
1948 allocate_dynrelocs (struct elf_link_hash_entry *eh, void *inf)
1950 struct bfd_link_info *info;
1951 struct elf32_hppa_link_hash_table *htab;
1953 struct elf32_hppa_link_hash_entry *hh;
1954 struct elf32_hppa_dyn_reloc_entry *hdh_p;
1956 if (eh->root.type == bfd_link_hash_indirect)
1960 htab = hppa_link_hash_table (info);
1964 hh = hppa_elf_hash_entry (eh);
1966 if (htab->etab.dynamic_sections_created
1967 && eh->plt.offset != (bfd_vma) -1
1969 && eh->plt.refcount > 0)
1971 /* Make an entry in the .plt section. */
1972 sec = htab->etab.splt;
1973 eh->plt.offset = sec->size;
1974 sec->size += PLT_ENTRY_SIZE;
1976 /* We also need to make an entry in the .rela.plt section. */
1977 htab->etab.srelplt->size += sizeof (Elf32_External_Rela);
1978 htab->need_plt_stub = 1;
1981 if (eh->got.refcount > 0)
1985 if (!ensure_undef_dynamic (info, eh))
1988 sec = htab->etab.sgot;
1989 eh->got.offset = sec->size;
1990 need = got_entries_needed (hh->tls_type);
1992 if (htab->etab.dynamic_sections_created
1993 && (bfd_link_pic (info)
1994 || (eh->dynindx != -1
1995 && !SYMBOL_REFERENCES_LOCAL (info, eh)))
1996 && !UNDEFWEAK_NO_DYNAMIC_RELOC (info, eh))
1998 bfd_boolean tprel_known = (bfd_link_executable (info)
1999 && SYMBOL_REFERENCES_LOCAL (info, eh));
2000 htab->etab.srelgot->size
2001 += got_relocs_needed (hh->tls_type, need, tprel_known);
2005 eh->got.offset = (bfd_vma) -1;
2007 /* If no dynamic sections we can't have dynamic relocs. */
2008 if (!htab->etab.dynamic_sections_created)
2009 hh->dyn_relocs = NULL;
2011 /* Discard relocs on undefined syms with non-default visibility. */
2012 else if ((eh->root.type == bfd_link_hash_undefined
2013 && ELF_ST_VISIBILITY (eh->other) != STV_DEFAULT)
2014 || UNDEFWEAK_NO_DYNAMIC_RELOC (info, eh))
2015 hh->dyn_relocs = NULL;
2017 if (hh->dyn_relocs == NULL)
2020 /* If this is a -Bsymbolic shared link, then we need to discard all
2021 space allocated for dynamic pc-relative relocs against symbols
2022 defined in a regular object. For the normal shared case, discard
2023 space for relocs that have become local due to symbol visibility
2025 if (bfd_link_pic (info))
2027 #if RELATIVE_DYNRELOCS
2028 if (SYMBOL_CALLS_LOCAL (info, eh))
2030 struct elf32_hppa_dyn_reloc_entry **hdh_pp;
2032 for (hdh_pp = &hh->dyn_relocs; (hdh_p = *hdh_pp) != NULL; )
2034 hdh_p->count -= hdh_p->relative_count;
2035 hdh_p->relative_count = 0;
2036 if (hdh_p->count == 0)
2037 *hdh_pp = hdh_p->hdh_next;
2039 hdh_pp = &hdh_p->hdh_next;
2044 if (hh->dyn_relocs != NULL)
2046 if (!ensure_undef_dynamic (info, eh))
2050 else if (ELIMINATE_COPY_RELOCS)
2052 /* For the non-shared case, discard space for relocs against
2053 symbols which turn out to need copy relocs or are not
2056 if (eh->dynamic_adjusted
2058 && !ELF_COMMON_DEF_P (eh))
2060 if (!ensure_undef_dynamic (info, eh))
2063 if (eh->dynindx == -1)
2064 hh->dyn_relocs = NULL;
2067 hh->dyn_relocs = NULL;
2070 /* Finally, allocate space. */
2071 for (hdh_p = hh->dyn_relocs; hdh_p != NULL; hdh_p = hdh_p->hdh_next)
2073 asection *sreloc = elf_section_data (hdh_p->sec)->sreloc;
2074 sreloc->size += hdh_p->count * sizeof (Elf32_External_Rela);
2080 /* This function is called via elf_link_hash_traverse to force
2081 millicode symbols local so they do not end up as globals in the
2082 dynamic symbol table. We ought to be able to do this in
2083 adjust_dynamic_symbol, but our adjust_dynamic_symbol is not called
2084 for all dynamic symbols. Arguably, this is a bug in
2085 elf_adjust_dynamic_symbol. */
2088 clobber_millicode_symbols (struct elf_link_hash_entry *eh,
2089 struct bfd_link_info *info)
2091 if (eh->type == STT_PARISC_MILLI
2092 && !eh->forced_local)
2094 elf32_hppa_hide_symbol (info, eh, TRUE);
2099 /* Set DF_TEXTREL if we find any dynamic relocs that apply to
2100 read-only sections. */
2103 maybe_set_textrel (struct elf_link_hash_entry *eh, void *inf)
2107 if (eh->root.type == bfd_link_hash_indirect)
2110 sec = readonly_dynrelocs (eh);
2113 struct bfd_link_info *info = (struct bfd_link_info *) inf;
2115 info->flags |= DF_TEXTREL;
2116 info->callbacks->minfo
2117 (_("%B: dynamic relocation in read-only section `%A'\n"),
2120 /* Not an error, just cut short the traversal. */
2126 /* Set the sizes of the dynamic sections. */
2129 elf32_hppa_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
2130 struct bfd_link_info *info)
2132 struct elf32_hppa_link_hash_table *htab;
2138 htab = hppa_link_hash_table (info);
2142 dynobj = htab->etab.dynobj;
2146 if (htab->etab.dynamic_sections_created)
2148 /* Set the contents of the .interp section to the interpreter. */
2149 if (bfd_link_executable (info) && !info->nointerp)
2151 sec = bfd_get_linker_section (dynobj, ".interp");
2154 sec->size = sizeof ELF_DYNAMIC_INTERPRETER;
2155 sec->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
2158 /* Force millicode symbols local. */
2159 elf_link_hash_traverse (&htab->etab,
2160 clobber_millicode_symbols,
2164 /* Set up .got and .plt offsets for local syms, and space for local
2166 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
2168 bfd_signed_vma *local_got;
2169 bfd_signed_vma *end_local_got;
2170 bfd_signed_vma *local_plt;
2171 bfd_signed_vma *end_local_plt;
2172 bfd_size_type locsymcount;
2173 Elf_Internal_Shdr *symtab_hdr;
2175 char *local_tls_type;
2177 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour)
2180 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
2182 struct elf32_hppa_dyn_reloc_entry *hdh_p;
2184 for (hdh_p = ((struct elf32_hppa_dyn_reloc_entry *)
2185 elf_section_data (sec)->local_dynrel);
2187 hdh_p = hdh_p->hdh_next)
2189 if (!bfd_is_abs_section (hdh_p->sec)
2190 && bfd_is_abs_section (hdh_p->sec->output_section))
2192 /* Input section has been discarded, either because
2193 it is a copy of a linkonce section or due to
2194 linker script /DISCARD/, so we'll be discarding
2197 else if (hdh_p->count != 0)
2199 srel = elf_section_data (hdh_p->sec)->sreloc;
2200 srel->size += hdh_p->count * sizeof (Elf32_External_Rela);
2201 if ((hdh_p->sec->output_section->flags & SEC_READONLY) != 0)
2202 info->flags |= DF_TEXTREL;
2207 local_got = elf_local_got_refcounts (ibfd);
2211 symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
2212 locsymcount = symtab_hdr->sh_info;
2213 end_local_got = local_got + locsymcount;
2214 local_tls_type = hppa_elf_local_got_tls_type (ibfd);
2215 sec = htab->etab.sgot;
2216 srel = htab->etab.srelgot;
2217 for (; local_got < end_local_got; ++local_got)
2223 *local_got = sec->size;
2224 need = got_entries_needed (*local_tls_type);
2226 if (bfd_link_pic (info))
2228 bfd_boolean tprel_known = bfd_link_executable (info);
2229 htab->etab.srelgot->size
2230 += got_relocs_needed (*local_tls_type, need, tprel_known);
2234 *local_got = (bfd_vma) -1;
2239 local_plt = end_local_got;
2240 end_local_plt = local_plt + locsymcount;
2241 if (! htab->etab.dynamic_sections_created)
2243 /* Won't be used, but be safe. */
2244 for (; local_plt < end_local_plt; ++local_plt)
2245 *local_plt = (bfd_vma) -1;
2249 sec = htab->etab.splt;
2250 srel = htab->etab.srelplt;
2251 for (; local_plt < end_local_plt; ++local_plt)
2255 *local_plt = sec->size;
2256 sec->size += PLT_ENTRY_SIZE;
2257 if (bfd_link_pic (info))
2258 srel->size += sizeof (Elf32_External_Rela);
2261 *local_plt = (bfd_vma) -1;
2266 if (htab->tls_ldm_got.refcount > 0)
2268 /* Allocate 2 got entries and 1 dynamic reloc for
2269 R_PARISC_TLS_DTPMOD32 relocs. */
2270 htab->tls_ldm_got.offset = htab->etab.sgot->size;
2271 htab->etab.sgot->size += (GOT_ENTRY_SIZE * 2);
2272 htab->etab.srelgot->size += sizeof (Elf32_External_Rela);
2275 htab->tls_ldm_got.offset = -1;
2277 /* Do all the .plt entries without relocs first. The dynamic linker
2278 uses the last .plt reloc to find the end of the .plt (and hence
2279 the start of the .got) for lazy linking. */
2280 elf_link_hash_traverse (&htab->etab, allocate_plt_static, info);
2282 /* Allocate global sym .plt and .got entries, and space for global
2283 sym dynamic relocs. */
2284 elf_link_hash_traverse (&htab->etab, allocate_dynrelocs, info);
2286 /* The check_relocs and adjust_dynamic_symbol entry points have
2287 determined the sizes of the various dynamic sections. Allocate
2290 for (sec = dynobj->sections; sec != NULL; sec = sec->next)
2292 if ((sec->flags & SEC_LINKER_CREATED) == 0)
2295 if (sec == htab->etab.splt)
2297 if (htab->need_plt_stub)
2299 /* Make space for the plt stub at the end of the .plt
2300 section. We want this stub right at the end, up
2301 against the .got section. */
2302 int gotalign = bfd_section_alignment (dynobj, htab->etab.sgot);
2303 int pltalign = bfd_section_alignment (dynobj, sec);
2306 if (gotalign > pltalign)
2307 (void) bfd_set_section_alignment (dynobj, sec, gotalign);
2308 mask = ((bfd_size_type) 1 << gotalign) - 1;
2309 sec->size = (sec->size + sizeof (plt_stub) + mask) & ~mask;
2312 else if (sec == htab->etab.sgot
2313 || sec == htab->etab.sdynbss
2314 || sec == htab->etab.sdynrelro)
2316 else if (CONST_STRNEQ (bfd_get_section_name (dynobj, sec), ".rela"))
2320 /* Remember whether there are any reloc sections other
2322 if (sec != htab->etab.srelplt)
2325 /* We use the reloc_count field as a counter if we need
2326 to copy relocs into the output file. */
2327 sec->reloc_count = 0;
2332 /* It's not one of our sections, so don't allocate space. */
2338 /* If we don't need this section, strip it from the
2339 output file. This is mostly to handle .rela.bss and
2340 .rela.plt. We must create both sections in
2341 create_dynamic_sections, because they must be created
2342 before the linker maps input sections to output
2343 sections. The linker does that before
2344 adjust_dynamic_symbol is called, and it is that
2345 function which decides whether anything needs to go
2346 into these sections. */
2347 sec->flags |= SEC_EXCLUDE;
2351 if ((sec->flags & SEC_HAS_CONTENTS) == 0)
2354 /* Allocate memory for the section contents. Zero it, because
2355 we may not fill in all the reloc sections. */
2356 sec->contents = bfd_zalloc (dynobj, sec->size);
2357 if (sec->contents == NULL)
2361 if (htab->etab.dynamic_sections_created)
2363 /* Like IA-64 and HPPA64, always create a DT_PLTGOT. It
2364 actually has nothing to do with the PLT, it is how we
2365 communicate the LTP value of a load module to the dynamic
2367 #define add_dynamic_entry(TAG, VAL) \
2368 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
2370 if (!add_dynamic_entry (DT_PLTGOT, 0))
2373 /* Add some entries to the .dynamic section. We fill in the
2374 values later, in elf32_hppa_finish_dynamic_sections, but we
2375 must add the entries now so that we get the correct size for
2376 the .dynamic section. The DT_DEBUG entry is filled in by the
2377 dynamic linker and used by the debugger. */
2378 if (bfd_link_executable (info))
2380 if (!add_dynamic_entry (DT_DEBUG, 0))
2384 if (htab->etab.srelplt->size != 0)
2386 if (!add_dynamic_entry (DT_PLTRELSZ, 0)
2387 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
2388 || !add_dynamic_entry (DT_JMPREL, 0))
2394 if (!add_dynamic_entry (DT_RELA, 0)
2395 || !add_dynamic_entry (DT_RELASZ, 0)
2396 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf32_External_Rela)))
2399 /* If any dynamic relocs apply to a read-only section,
2400 then we need a DT_TEXTREL entry. */
2401 if ((info->flags & DF_TEXTREL) == 0)
2402 elf_link_hash_traverse (&htab->etab, maybe_set_textrel, info);
2404 if ((info->flags & DF_TEXTREL) != 0)
2406 if (!add_dynamic_entry (DT_TEXTREL, 0))
2411 #undef add_dynamic_entry
2416 /* External entry points for sizing and building linker stubs. */
2418 /* Set up various things so that we can make a list of input sections
2419 for each output section included in the link. Returns -1 on error,
2420 0 when no stubs will be needed, and 1 on success. */
2423 elf32_hppa_setup_section_lists (bfd *output_bfd, struct bfd_link_info *info)
2426 unsigned int bfd_count;
2427 unsigned int top_id, top_index;
2429 asection **input_list, **list;
2431 struct elf32_hppa_link_hash_table *htab = hppa_link_hash_table (info);
2436 /* Count the number of input BFDs and find the top input section id. */
2437 for (input_bfd = info->input_bfds, bfd_count = 0, top_id = 0;
2439 input_bfd = input_bfd->link.next)
2442 for (section = input_bfd->sections;
2444 section = section->next)
2446 if (top_id < section->id)
2447 top_id = section->id;
2450 htab->bfd_count = bfd_count;
2452 amt = sizeof (struct map_stub) * (top_id + 1);
2453 htab->stub_group = bfd_zmalloc (amt);
2454 if (htab->stub_group == NULL)
2457 /* We can't use output_bfd->section_count here to find the top output
2458 section index as some sections may have been removed, and
2459 strip_excluded_output_sections doesn't renumber the indices. */
2460 for (section = output_bfd->sections, top_index = 0;
2462 section = section->next)
2464 if (top_index < section->index)
2465 top_index = section->index;
2468 htab->top_index = top_index;
2469 amt = sizeof (asection *) * (top_index + 1);
2470 input_list = bfd_malloc (amt);
2471 htab->input_list = input_list;
2472 if (input_list == NULL)
2475 /* For sections we aren't interested in, mark their entries with a
2476 value we can check later. */
2477 list = input_list + top_index;
2479 *list = bfd_abs_section_ptr;
2480 while (list-- != input_list);
2482 for (section = output_bfd->sections;
2484 section = section->next)
2486 if ((section->flags & SEC_CODE) != 0)
2487 input_list[section->index] = NULL;
2493 /* The linker repeatedly calls this function for each input section,
2494 in the order that input sections are linked into output sections.
2495 Build lists of input sections to determine groupings between which
2496 we may insert linker stubs. */
2499 elf32_hppa_next_input_section (struct bfd_link_info *info, asection *isec)
2501 struct elf32_hppa_link_hash_table *htab = hppa_link_hash_table (info);
2506 if (isec->output_section->index <= htab->top_index)
2508 asection **list = htab->input_list + isec->output_section->index;
2509 if (*list != bfd_abs_section_ptr)
2511 /* Steal the link_sec pointer for our list. */
2512 #define PREV_SEC(sec) (htab->stub_group[(sec)->id].link_sec)
2513 /* This happens to make the list in reverse order,
2514 which is what we want. */
2515 PREV_SEC (isec) = *list;
2521 /* See whether we can group stub sections together. Grouping stub
2522 sections may result in fewer stubs. More importantly, we need to
2523 put all .init* and .fini* stubs at the beginning of the .init or
2524 .fini output sections respectively, because glibc splits the
2525 _init and _fini functions into multiple parts. Putting a stub in
2526 the middle of a function is not a good idea. */
2529 group_sections (struct elf32_hppa_link_hash_table *htab,
2530 bfd_size_type stub_group_size,
2531 bfd_boolean stubs_always_before_branch)
2533 asection **list = htab->input_list + htab->top_index;
2536 asection *tail = *list;
2537 if (tail == bfd_abs_section_ptr)
2539 while (tail != NULL)
2543 bfd_size_type total;
2544 bfd_boolean big_sec;
2548 big_sec = total >= stub_group_size;
2550 while ((prev = PREV_SEC (curr)) != NULL
2551 && ((total += curr->output_offset - prev->output_offset)
2555 /* OK, the size from the start of CURR to the end is less
2556 than 240000 bytes and thus can be handled by one stub
2557 section. (or the tail section is itself larger than
2558 240000 bytes, in which case we may be toast.)
2559 We should really be keeping track of the total size of
2560 stubs added here, as stubs contribute to the final output
2561 section size. That's a little tricky, and this way will
2562 only break if stubs added total more than 22144 bytes, or
2563 2768 long branch stubs. It seems unlikely for more than
2564 2768 different functions to be called, especially from
2565 code only 240000 bytes long. This limit used to be
2566 250000, but c++ code tends to generate lots of little
2567 functions, and sometimes violated the assumption. */
2570 prev = PREV_SEC (tail);
2571 /* Set up this stub group. */
2572 htab->stub_group[tail->id].link_sec = curr;
2574 while (tail != curr && (tail = prev) != NULL);
2576 /* But wait, there's more! Input sections up to 240000
2577 bytes before the stub section can be handled by it too.
2578 Don't do this if we have a really large section after the
2579 stubs, as adding more stubs increases the chance that
2580 branches may not reach into the stub section. */
2581 if (!stubs_always_before_branch && !big_sec)
2585 && ((total += tail->output_offset - prev->output_offset)
2589 prev = PREV_SEC (tail);
2590 htab->stub_group[tail->id].link_sec = curr;
2596 while (list-- != htab->input_list);
2597 free (htab->input_list);
2601 /* Read in all local syms for all input bfds, and create hash entries
2602 for export stubs if we are building a multi-subspace shared lib.
2603 Returns -1 on error, 1 if export stubs created, 0 otherwise. */
2606 get_local_syms (bfd *output_bfd, bfd *input_bfd, struct bfd_link_info *info)
2608 unsigned int bfd_indx;
2609 Elf_Internal_Sym *local_syms, **all_local_syms;
2610 int stub_changed = 0;
2611 struct elf32_hppa_link_hash_table *htab = hppa_link_hash_table (info);
2616 /* We want to read in symbol extension records only once. To do this
2617 we need to read in the local symbols in parallel and save them for
2618 later use; so hold pointers to the local symbols in an array. */
2619 bfd_size_type amt = sizeof (Elf_Internal_Sym *) * htab->bfd_count;
2620 all_local_syms = bfd_zmalloc (amt);
2621 htab->all_local_syms = all_local_syms;
2622 if (all_local_syms == NULL)
2625 /* Walk over all the input BFDs, swapping in local symbols.
2626 If we are creating a shared library, create hash entries for the
2630 input_bfd = input_bfd->link.next, bfd_indx++)
2632 Elf_Internal_Shdr *symtab_hdr;
2634 /* We'll need the symbol table in a second. */
2635 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
2636 if (symtab_hdr->sh_info == 0)
2639 /* We need an array of the local symbols attached to the input bfd. */
2640 local_syms = (Elf_Internal_Sym *) symtab_hdr->contents;
2641 if (local_syms == NULL)
2643 local_syms = bfd_elf_get_elf_syms (input_bfd, symtab_hdr,
2644 symtab_hdr->sh_info, 0,
2646 /* Cache them for elf_link_input_bfd. */
2647 symtab_hdr->contents = (unsigned char *) local_syms;
2649 if (local_syms == NULL)
2652 all_local_syms[bfd_indx] = local_syms;
2654 if (bfd_link_pic (info) && htab->multi_subspace)
2656 struct elf_link_hash_entry **eh_syms;
2657 struct elf_link_hash_entry **eh_symend;
2658 unsigned int symcount;
2660 symcount = (symtab_hdr->sh_size / sizeof (Elf32_External_Sym)
2661 - symtab_hdr->sh_info);
2662 eh_syms = (struct elf_link_hash_entry **) elf_sym_hashes (input_bfd);
2663 eh_symend = (struct elf_link_hash_entry **) (eh_syms + symcount);
2665 /* Look through the global syms for functions; We need to
2666 build export stubs for all globally visible functions. */
2667 for (; eh_syms < eh_symend; eh_syms++)
2669 struct elf32_hppa_link_hash_entry *hh;
2671 hh = hppa_elf_hash_entry (*eh_syms);
2673 while (hh->eh.root.type == bfd_link_hash_indirect
2674 || hh->eh.root.type == bfd_link_hash_warning)
2675 hh = hppa_elf_hash_entry (hh->eh.root.u.i.link);
2677 /* At this point in the link, undefined syms have been
2678 resolved, so we need to check that the symbol was
2679 defined in this BFD. */
2680 if ((hh->eh.root.type == bfd_link_hash_defined
2681 || hh->eh.root.type == bfd_link_hash_defweak)
2682 && hh->eh.type == STT_FUNC
2683 && hh->eh.root.u.def.section->output_section != NULL
2684 && (hh->eh.root.u.def.section->output_section->owner
2686 && hh->eh.root.u.def.section->owner == input_bfd
2687 && hh->eh.def_regular
2688 && !hh->eh.forced_local
2689 && ELF_ST_VISIBILITY (hh->eh.other) == STV_DEFAULT)
2692 const char *stub_name;
2693 struct elf32_hppa_stub_hash_entry *hsh;
2695 sec = hh->eh.root.u.def.section;
2696 stub_name = hh_name (hh);
2697 hsh = hppa_stub_hash_lookup (&htab->bstab,
2702 hsh = hppa_add_stub (stub_name, sec, htab);
2706 hsh->target_value = hh->eh.root.u.def.value;
2707 hsh->target_section = hh->eh.root.u.def.section;
2708 hsh->stub_type = hppa_stub_export;
2714 /* xgettext:c-format */
2715 _bfd_error_handler (_("%B: duplicate export stub %s"),
2716 input_bfd, stub_name);
2723 return stub_changed;
2726 /* Determine and set the size of the stub section for a final link.
2728 The basic idea here is to examine all the relocations looking for
2729 PC-relative calls to a target that is unreachable with a "bl"
2733 elf32_hppa_size_stubs
2734 (bfd *output_bfd, bfd *stub_bfd, struct bfd_link_info *info,
2735 bfd_boolean multi_subspace, bfd_signed_vma group_size,
2736 asection * (*add_stub_section) (const char *, asection *),
2737 void (*layout_sections_again) (void))
2739 bfd_size_type stub_group_size;
2740 bfd_boolean stubs_always_before_branch;
2741 bfd_boolean stub_changed;
2742 struct elf32_hppa_link_hash_table *htab = hppa_link_hash_table (info);
2747 /* Stash our params away. */
2748 htab->stub_bfd = stub_bfd;
2749 htab->multi_subspace = multi_subspace;
2750 htab->add_stub_section = add_stub_section;
2751 htab->layout_sections_again = layout_sections_again;
2752 stubs_always_before_branch = group_size < 0;
2754 stub_group_size = -group_size;
2756 stub_group_size = group_size;
2757 if (stub_group_size == 1)
2759 /* Default values. */
2760 if (stubs_always_before_branch)
2762 stub_group_size = 7680000;
2763 if (htab->has_17bit_branch || htab->multi_subspace)
2764 stub_group_size = 240000;
2765 if (htab->has_12bit_branch)
2766 stub_group_size = 7500;
2770 stub_group_size = 6971392;
2771 if (htab->has_17bit_branch || htab->multi_subspace)
2772 stub_group_size = 217856;
2773 if (htab->has_12bit_branch)
2774 stub_group_size = 6808;
2778 group_sections (htab, stub_group_size, stubs_always_before_branch);
2780 switch (get_local_syms (output_bfd, info->input_bfds, info))
2783 if (htab->all_local_syms)
2784 goto error_ret_free_local;
2788 stub_changed = FALSE;
2792 stub_changed = TRUE;
2799 unsigned int bfd_indx;
2802 for (input_bfd = info->input_bfds, bfd_indx = 0;
2804 input_bfd = input_bfd->link.next, bfd_indx++)
2806 Elf_Internal_Shdr *symtab_hdr;
2808 Elf_Internal_Sym *local_syms;
2810 /* We'll need the symbol table in a second. */
2811 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
2812 if (symtab_hdr->sh_info == 0)
2815 local_syms = htab->all_local_syms[bfd_indx];
2817 /* Walk over each section attached to the input bfd. */
2818 for (section = input_bfd->sections;
2820 section = section->next)
2822 Elf_Internal_Rela *internal_relocs, *irelaend, *irela;
2824 /* If there aren't any relocs, then there's nothing more
2826 if ((section->flags & SEC_RELOC) == 0
2827 || section->reloc_count == 0)
2830 /* If this section is a link-once section that will be
2831 discarded, then don't create any stubs. */
2832 if (section->output_section == NULL
2833 || section->output_section->owner != output_bfd)
2836 /* Get the relocs. */
2838 = _bfd_elf_link_read_relocs (input_bfd, section, NULL, NULL,
2840 if (internal_relocs == NULL)
2841 goto error_ret_free_local;
2843 /* Now examine each relocation. */
2844 irela = internal_relocs;
2845 irelaend = irela + section->reloc_count;
2846 for (; irela < irelaend; irela++)
2848 unsigned int r_type, r_indx;
2849 enum elf32_hppa_stub_type stub_type;
2850 struct elf32_hppa_stub_hash_entry *hsh;
2853 bfd_vma destination;
2854 struct elf32_hppa_link_hash_entry *hh;
2856 const asection *id_sec;
2858 r_type = ELF32_R_TYPE (irela->r_info);
2859 r_indx = ELF32_R_SYM (irela->r_info);
2861 if (r_type >= (unsigned int) R_PARISC_UNIMPLEMENTED)
2863 bfd_set_error (bfd_error_bad_value);
2864 error_ret_free_internal:
2865 if (elf_section_data (section)->relocs == NULL)
2866 free (internal_relocs);
2867 goto error_ret_free_local;
2870 /* Only look for stubs on call instructions. */
2871 if (r_type != (unsigned int) R_PARISC_PCREL12F
2872 && r_type != (unsigned int) R_PARISC_PCREL17F
2873 && r_type != (unsigned int) R_PARISC_PCREL22F)
2876 /* Now determine the call target, its name, value,
2882 if (r_indx < symtab_hdr->sh_info)
2884 /* It's a local symbol. */
2885 Elf_Internal_Sym *sym;
2886 Elf_Internal_Shdr *hdr;
2889 sym = local_syms + r_indx;
2890 if (ELF_ST_TYPE (sym->st_info) != STT_SECTION)
2891 sym_value = sym->st_value;
2892 shndx = sym->st_shndx;
2893 if (shndx < elf_numsections (input_bfd))
2895 hdr = elf_elfsections (input_bfd)[shndx];
2896 sym_sec = hdr->bfd_section;
2897 destination = (sym_value + irela->r_addend
2898 + sym_sec->output_offset
2899 + sym_sec->output_section->vma);
2904 /* It's an external symbol. */
2907 e_indx = r_indx - symtab_hdr->sh_info;
2908 hh = hppa_elf_hash_entry (elf_sym_hashes (input_bfd)[e_indx]);
2910 while (hh->eh.root.type == bfd_link_hash_indirect
2911 || hh->eh.root.type == bfd_link_hash_warning)
2912 hh = hppa_elf_hash_entry (hh->eh.root.u.i.link);
2914 if (hh->eh.root.type == bfd_link_hash_defined
2915 || hh->eh.root.type == bfd_link_hash_defweak)
2917 sym_sec = hh->eh.root.u.def.section;
2918 sym_value = hh->eh.root.u.def.value;
2919 if (sym_sec->output_section != NULL)
2920 destination = (sym_value + irela->r_addend
2921 + sym_sec->output_offset
2922 + sym_sec->output_section->vma);
2924 else if (hh->eh.root.type == bfd_link_hash_undefweak)
2926 if (! bfd_link_pic (info))
2929 else if (hh->eh.root.type == bfd_link_hash_undefined)
2931 if (! (info->unresolved_syms_in_objects == RM_IGNORE
2932 && (ELF_ST_VISIBILITY (hh->eh.other)
2934 && hh->eh.type != STT_PARISC_MILLI))
2939 bfd_set_error (bfd_error_bad_value);
2940 goto error_ret_free_internal;
2944 /* Determine what (if any) linker stub is needed. */
2945 stub_type = hppa_type_of_stub (section, irela, hh,
2947 if (stub_type == hppa_stub_none)
2950 /* Support for grouping stub sections. */
2951 id_sec = htab->stub_group[section->id].link_sec;
2953 /* Get the name of this stub. */
2954 stub_name = hppa_stub_name (id_sec, sym_sec, hh, irela);
2956 goto error_ret_free_internal;
2958 hsh = hppa_stub_hash_lookup (&htab->bstab,
2963 /* The proper stub has already been created. */
2968 hsh = hppa_add_stub (stub_name, section, htab);
2972 goto error_ret_free_internal;
2975 hsh->target_value = sym_value;
2976 hsh->target_section = sym_sec;
2977 hsh->stub_type = stub_type;
2978 if (bfd_link_pic (info))
2980 if (stub_type == hppa_stub_import)
2981 hsh->stub_type = hppa_stub_import_shared;
2982 else if (stub_type == hppa_stub_long_branch)
2983 hsh->stub_type = hppa_stub_long_branch_shared;
2986 stub_changed = TRUE;
2989 /* We're done with the internal relocs, free them. */
2990 if (elf_section_data (section)->relocs == NULL)
2991 free (internal_relocs);
2998 /* OK, we've added some stubs. Find out the new size of the
3000 for (stub_sec = htab->stub_bfd->sections;
3002 stub_sec = stub_sec->next)
3003 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
3006 bfd_hash_traverse (&htab->bstab, hppa_size_one_stub, htab);
3008 /* Ask the linker to do its stuff. */
3009 (*htab->layout_sections_again) ();
3010 stub_changed = FALSE;
3013 free (htab->all_local_syms);
3016 error_ret_free_local:
3017 free (htab->all_local_syms);
3021 /* For a final link, this function is called after we have sized the
3022 stubs to provide a value for __gp. */
3025 elf32_hppa_set_gp (bfd *abfd, struct bfd_link_info *info)
3027 struct bfd_link_hash_entry *h;
3028 asection *sec = NULL;
3031 h = bfd_link_hash_lookup (info->hash, "$global$", FALSE, FALSE, FALSE);
3034 && (h->type == bfd_link_hash_defined
3035 || h->type == bfd_link_hash_defweak))
3037 gp_val = h->u.def.value;
3038 sec = h->u.def.section;
3042 asection *splt = bfd_get_section_by_name (abfd, ".plt");
3043 asection *sgot = bfd_get_section_by_name (abfd, ".got");
3045 /* Choose to point our LTP at, in this order, one of .plt, .got,
3046 or .data, if these sections exist. In the case of choosing
3047 .plt try to make the LTP ideal for addressing anywhere in the
3048 .plt or .got with a 14 bit signed offset. Typically, the end
3049 of the .plt is the start of the .got, so choose .plt + 0x2000
3050 if either the .plt or .got is larger than 0x2000. If both
3051 the .plt and .got are smaller than 0x2000, choose the end of
3052 the .plt section. */
3053 sec = strcmp (bfd_get_target (abfd), "elf32-hppa-netbsd") == 0
3058 if (gp_val > 0x2000 || (sgot && sgot->size > 0x2000))
3068 if (strcmp (bfd_get_target (abfd), "elf32-hppa-netbsd") != 0)
3070 /* We know we don't have a .plt. If .got is large,
3072 if (sec->size > 0x2000)
3078 /* No .plt or .got. Who cares what the LTP is? */
3079 sec = bfd_get_section_by_name (abfd, ".data");
3085 h->type = bfd_link_hash_defined;
3086 h->u.def.value = gp_val;
3088 h->u.def.section = sec;
3090 h->u.def.section = bfd_abs_section_ptr;
3094 if (bfd_get_flavour (abfd) == bfd_target_elf_flavour)
3096 if (sec != NULL && sec->output_section != NULL)
3097 gp_val += sec->output_section->vma + sec->output_offset;
3099 elf_gp (abfd) = gp_val;
3104 /* Build all the stubs associated with the current output file. The
3105 stubs are kept in a hash table attached to the main linker hash
3106 table. We also set up the .plt entries for statically linked PIC
3107 functions here. This function is called via hppaelf_finish in the
3111 elf32_hppa_build_stubs (struct bfd_link_info *info)
3114 struct bfd_hash_table *table;
3115 struct elf32_hppa_link_hash_table *htab;
3117 htab = hppa_link_hash_table (info);
3121 for (stub_sec = htab->stub_bfd->sections;
3123 stub_sec = stub_sec->next)
3124 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0
3125 && stub_sec->size != 0)
3127 /* Allocate memory to hold the linker stubs. */
3128 stub_sec->contents = bfd_zalloc (htab->stub_bfd, stub_sec->size);
3129 if (stub_sec->contents == NULL)
3134 /* Build the stubs as directed by the stub hash table. */
3135 table = &htab->bstab;
3136 bfd_hash_traverse (table, hppa_build_one_stub, info);
3141 /* Return the base vma address which should be subtracted from the real
3142 address when resolving a dtpoff relocation.
3143 This is PT_TLS segment p_vaddr. */
3146 dtpoff_base (struct bfd_link_info *info)
3148 /* If tls_sec is NULL, we should have signalled an error already. */
3149 if (elf_hash_table (info)->tls_sec == NULL)
3151 return elf_hash_table (info)->tls_sec->vma;
3154 /* Return the relocation value for R_PARISC_TLS_TPOFF*.. */
3157 tpoff (struct bfd_link_info *info, bfd_vma address)
3159 struct elf_link_hash_table *htab = elf_hash_table (info);
3161 /* If tls_sec is NULL, we should have signalled an error already. */
3162 if (htab->tls_sec == NULL)
3164 /* hppa TLS ABI is variant I and static TLS block start just after
3165 tcbhead structure which has 2 pointer fields. */
3166 return (address - htab->tls_sec->vma
3167 + align_power ((bfd_vma) 8, htab->tls_sec->alignment_power));
3170 /* Perform a final link. */
3173 elf32_hppa_final_link (bfd *abfd, struct bfd_link_info *info)
3177 /* Invoke the regular ELF linker to do all the work. */
3178 if (!bfd_elf_final_link (abfd, info))
3181 /* If we're producing a final executable, sort the contents of the
3183 if (bfd_link_relocatable (info))
3186 /* Do not attempt to sort non-regular files. This is here
3187 especially for configure scripts and kernel builds which run
3188 tests with "ld [...] -o /dev/null". */
3189 if (stat (abfd->filename, &buf) != 0
3190 || !S_ISREG(buf.st_mode))
3193 return elf_hppa_sort_unwind (abfd);
3196 /* Record the lowest address for the data and text segments. */
3199 hppa_record_segment_addr (bfd *abfd, asection *section, void *data)
3201 struct elf32_hppa_link_hash_table *htab;
3203 htab = (struct elf32_hppa_link_hash_table*) data;
3207 if ((section->flags & (SEC_ALLOC | SEC_LOAD)) == (SEC_ALLOC | SEC_LOAD))
3210 Elf_Internal_Phdr *p;
3212 p = _bfd_elf_find_segment_containing_section (abfd, section->output_section);
3213 BFD_ASSERT (p != NULL);
3216 if ((section->flags & SEC_READONLY) != 0)
3218 if (value < htab->text_segment_base)
3219 htab->text_segment_base = value;
3223 if (value < htab->data_segment_base)
3224 htab->data_segment_base = value;
3229 /* Perform a relocation as part of a final link. */
3231 static bfd_reloc_status_type
3232 final_link_relocate (asection *input_section,
3234 const Elf_Internal_Rela *rela,
3236 struct elf32_hppa_link_hash_table *htab,
3238 struct elf32_hppa_link_hash_entry *hh,
3239 struct bfd_link_info *info)
3242 unsigned int r_type = ELF32_R_TYPE (rela->r_info);
3243 unsigned int orig_r_type = r_type;
3244 reloc_howto_type *howto = elf_hppa_howto_table + r_type;
3245 int r_format = howto->bitsize;
3246 enum hppa_reloc_field_selector_type_alt r_field;
3247 bfd *input_bfd = input_section->owner;
3248 bfd_vma offset = rela->r_offset;
3249 bfd_vma max_branch_offset = 0;
3250 bfd_byte *hit_data = contents + offset;
3251 bfd_signed_vma addend = rela->r_addend;
3253 struct elf32_hppa_stub_hash_entry *hsh = NULL;
3256 if (r_type == R_PARISC_NONE)
3257 return bfd_reloc_ok;
3259 insn = bfd_get_32 (input_bfd, hit_data);
3261 /* Find out where we are and where we're going. */
3262 location = (offset +
3263 input_section->output_offset +
3264 input_section->output_section->vma);
3266 /* If we are not building a shared library, convert DLTIND relocs to
3268 if (!bfd_link_pic (info))
3272 case R_PARISC_DLTIND21L:
3273 case R_PARISC_TLS_GD21L:
3274 case R_PARISC_TLS_LDM21L:
3275 case R_PARISC_TLS_IE21L:
3276 r_type = R_PARISC_DPREL21L;
3279 case R_PARISC_DLTIND14R:
3280 case R_PARISC_TLS_GD14R:
3281 case R_PARISC_TLS_LDM14R:
3282 case R_PARISC_TLS_IE14R:
3283 r_type = R_PARISC_DPREL14R;
3286 case R_PARISC_DLTIND14F:
3287 r_type = R_PARISC_DPREL14F;
3294 case R_PARISC_PCREL12F:
3295 case R_PARISC_PCREL17F:
3296 case R_PARISC_PCREL22F:
3297 /* If this call should go via the plt, find the import stub in
3300 || sym_sec->output_section == NULL
3302 && hh->eh.plt.offset != (bfd_vma) -1
3303 && hh->eh.dynindx != -1
3305 && (bfd_link_pic (info)
3306 || !hh->eh.def_regular
3307 || hh->eh.root.type == bfd_link_hash_defweak)))
3309 hsh = hppa_get_stub_entry (input_section, sym_sec,
3313 value = (hsh->stub_offset
3314 + hsh->stub_sec->output_offset
3315 + hsh->stub_sec->output_section->vma);
3318 else if (sym_sec == NULL && hh != NULL
3319 && hh->eh.root.type == bfd_link_hash_undefweak)
3321 /* It's OK if undefined weak. Calls to undefined weak
3322 symbols behave as if the "called" function
3323 immediately returns. We can thus call to a weak
3324 function without first checking whether the function
3330 return bfd_reloc_undefined;
3334 case R_PARISC_PCREL21L:
3335 case R_PARISC_PCREL17C:
3336 case R_PARISC_PCREL17R:
3337 case R_PARISC_PCREL14R:
3338 case R_PARISC_PCREL14F:
3339 case R_PARISC_PCREL32:
3340 /* Make it a pc relative offset. */
3345 case R_PARISC_DPREL21L:
3346 case R_PARISC_DPREL14R:
3347 case R_PARISC_DPREL14F:
3348 /* Convert instructions that use the linkage table pointer (r19) to
3349 instructions that use the global data pointer (dp). This is the
3350 most efficient way of using PIC code in an incomplete executable,
3351 but the user must follow the standard runtime conventions for
3352 accessing data for this to work. */
3353 if (orig_r_type != r_type)
3355 if (r_type == R_PARISC_DPREL21L)
3357 /* GCC sometimes uses a register other than r19 for the
3358 operation, so we must convert any addil instruction
3359 that uses this relocation. */
3360 if ((insn & 0xfc000000) == ((int) OP_ADDIL << 26))
3363 /* We must have a ldil instruction. It's too hard to find
3364 and convert the associated add instruction, so issue an
3367 /* xgettext:c-format */
3368 (_("%B(%A+%#Lx): %s fixup for insn %#x is not supported in a non-shared link"),
3375 else if (r_type == R_PARISC_DPREL14F)
3377 /* This must be a format 1 load/store. Change the base
3379 insn = (insn & 0xfc1ffff) | (27 << 21);
3383 /* For all the DP relative relocations, we need to examine the symbol's
3384 section. If it has no section or if it's a code section, then
3385 "data pointer relative" makes no sense. In that case we don't
3386 adjust the "value", and for 21 bit addil instructions, we change the
3387 source addend register from %dp to %r0. This situation commonly
3388 arises for undefined weak symbols and when a variable's "constness"
3389 is declared differently from the way the variable is defined. For
3390 instance: "extern int foo" with foo defined as "const int foo". */
3391 if (sym_sec == NULL || (sym_sec->flags & SEC_CODE) != 0)
3393 if ((insn & ((0x3f << 26) | (0x1f << 21)))
3394 == (((int) OP_ADDIL << 26) | (27 << 21)))
3396 insn &= ~ (0x1f << 21);
3398 /* Now try to make things easy for the dynamic linker. */
3404 case R_PARISC_DLTIND21L:
3405 case R_PARISC_DLTIND14R:
3406 case R_PARISC_DLTIND14F:
3407 case R_PARISC_TLS_GD21L:
3408 case R_PARISC_TLS_LDM21L:
3409 case R_PARISC_TLS_IE21L:
3410 case R_PARISC_TLS_GD14R:
3411 case R_PARISC_TLS_LDM14R:
3412 case R_PARISC_TLS_IE14R:
3413 value -= elf_gp (input_section->output_section->owner);
3416 case R_PARISC_SEGREL32:
3417 if ((sym_sec->flags & SEC_CODE) != 0)
3418 value -= htab->text_segment_base;
3420 value -= htab->data_segment_base;
3429 case R_PARISC_DIR32:
3430 case R_PARISC_DIR14F:
3431 case R_PARISC_DIR17F:
3432 case R_PARISC_PCREL17C:
3433 case R_PARISC_PCREL14F:
3434 case R_PARISC_PCREL32:
3435 case R_PARISC_DPREL14F:
3436 case R_PARISC_PLABEL32:
3437 case R_PARISC_DLTIND14F:
3438 case R_PARISC_SEGBASE:
3439 case R_PARISC_SEGREL32:
3440 case R_PARISC_TLS_DTPMOD32:
3441 case R_PARISC_TLS_DTPOFF32:
3442 case R_PARISC_TLS_TPREL32:
3446 case R_PARISC_DLTIND21L:
3447 case R_PARISC_PCREL21L:
3448 case R_PARISC_PLABEL21L:
3452 case R_PARISC_DIR21L:
3453 case R_PARISC_DPREL21L:
3454 case R_PARISC_TLS_GD21L:
3455 case R_PARISC_TLS_LDM21L:
3456 case R_PARISC_TLS_LDO21L:
3457 case R_PARISC_TLS_IE21L:
3458 case R_PARISC_TLS_LE21L:
3462 case R_PARISC_PCREL17R:
3463 case R_PARISC_PCREL14R:
3464 case R_PARISC_PLABEL14R:
3465 case R_PARISC_DLTIND14R:
3469 case R_PARISC_DIR17R:
3470 case R_PARISC_DIR14R:
3471 case R_PARISC_DPREL14R:
3472 case R_PARISC_TLS_GD14R:
3473 case R_PARISC_TLS_LDM14R:
3474 case R_PARISC_TLS_LDO14R:
3475 case R_PARISC_TLS_IE14R:
3476 case R_PARISC_TLS_LE14R:
3480 case R_PARISC_PCREL12F:
3481 case R_PARISC_PCREL17F:
3482 case R_PARISC_PCREL22F:
3485 if (r_type == (unsigned int) R_PARISC_PCREL17F)
3487 max_branch_offset = (1 << (17-1)) << 2;
3489 else if (r_type == (unsigned int) R_PARISC_PCREL12F)
3491 max_branch_offset = (1 << (12-1)) << 2;
3495 max_branch_offset = (1 << (22-1)) << 2;
3498 /* sym_sec is NULL on undefined weak syms or when shared on
3499 undefined syms. We've already checked for a stub for the
3500 shared undefined case. */
3501 if (sym_sec == NULL)
3504 /* If the branch is out of reach, then redirect the
3505 call to the local stub for this function. */
3506 if (value + addend + max_branch_offset >= 2*max_branch_offset)
3508 hsh = hppa_get_stub_entry (input_section, sym_sec,
3511 return bfd_reloc_undefined;
3513 /* Munge up the value and addend so that we call the stub
3514 rather than the procedure directly. */
3515 value = (hsh->stub_offset
3516 + hsh->stub_sec->output_offset
3517 + hsh->stub_sec->output_section->vma
3523 /* Something we don't know how to handle. */
3525 return bfd_reloc_notsupported;
3528 /* Make sure we can reach the stub. */
3529 if (max_branch_offset != 0
3530 && value + addend + max_branch_offset >= 2*max_branch_offset)
3533 /* xgettext:c-format */
3534 (_("%B(%A+%#Lx): cannot reach %s, recompile with -ffunction-sections"),
3538 hsh->bh_root.string);
3539 bfd_set_error (bfd_error_bad_value);
3540 return bfd_reloc_notsupported;
3543 val = hppa_field_adjust (value, addend, r_field);
3547 case R_PARISC_PCREL12F:
3548 case R_PARISC_PCREL17C:
3549 case R_PARISC_PCREL17F:
3550 case R_PARISC_PCREL17R:
3551 case R_PARISC_PCREL22F:
3552 case R_PARISC_DIR17F:
3553 case R_PARISC_DIR17R:
3554 /* This is a branch. Divide the offset by four.
3555 Note that we need to decide whether it's a branch or
3556 otherwise by inspecting the reloc. Inspecting insn won't
3557 work as insn might be from a .word directive. */
3565 insn = hppa_rebuild_insn (insn, val, r_format);
3567 /* Update the instruction word. */
3568 bfd_put_32 (input_bfd, (bfd_vma) insn, hit_data);
3569 return bfd_reloc_ok;
3572 /* Relocate an HPPA ELF section. */
3575 elf32_hppa_relocate_section (bfd *output_bfd,
3576 struct bfd_link_info *info,
3578 asection *input_section,
3580 Elf_Internal_Rela *relocs,
3581 Elf_Internal_Sym *local_syms,
3582 asection **local_sections)
3584 bfd_vma *local_got_offsets;
3585 struct elf32_hppa_link_hash_table *htab;
3586 Elf_Internal_Shdr *symtab_hdr;
3587 Elf_Internal_Rela *rela;
3588 Elf_Internal_Rela *relend;
3590 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
3592 htab = hppa_link_hash_table (info);
3596 local_got_offsets = elf_local_got_offsets (input_bfd);
3599 relend = relocs + input_section->reloc_count;
3600 for (; rela < relend; rela++)
3602 unsigned int r_type;
3603 reloc_howto_type *howto;
3604 unsigned int r_symndx;
3605 struct elf32_hppa_link_hash_entry *hh;
3606 Elf_Internal_Sym *sym;
3609 bfd_reloc_status_type rstatus;
3610 const char *sym_name;
3612 bfd_boolean warned_undef;
3614 r_type = ELF32_R_TYPE (rela->r_info);
3615 if (r_type >= (unsigned int) R_PARISC_UNIMPLEMENTED)
3617 bfd_set_error (bfd_error_bad_value);
3620 if (r_type == (unsigned int) R_PARISC_GNU_VTENTRY
3621 || r_type == (unsigned int) R_PARISC_GNU_VTINHERIT)
3624 r_symndx = ELF32_R_SYM (rela->r_info);
3628 warned_undef = FALSE;
3629 if (r_symndx < symtab_hdr->sh_info)
3631 /* This is a local symbol, h defaults to NULL. */
3632 sym = local_syms + r_symndx;
3633 sym_sec = local_sections[r_symndx];
3634 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sym_sec, rela);
3638 struct elf_link_hash_entry *eh;
3639 bfd_boolean unresolved_reloc, ignored;
3640 struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (input_bfd);
3642 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rela,
3643 r_symndx, symtab_hdr, sym_hashes,
3644 eh, sym_sec, relocation,
3645 unresolved_reloc, warned_undef,
3648 if (!bfd_link_relocatable (info)
3650 && eh->root.type != bfd_link_hash_defined
3651 && eh->root.type != bfd_link_hash_defweak
3652 && eh->root.type != bfd_link_hash_undefweak)
3654 if (info->unresolved_syms_in_objects == RM_IGNORE
3655 && ELF_ST_VISIBILITY (eh->other) == STV_DEFAULT
3656 && eh->type == STT_PARISC_MILLI)
3658 (*info->callbacks->undefined_symbol)
3659 (info, eh_name (eh), input_bfd,
3660 input_section, rela->r_offset, FALSE);
3661 warned_undef = TRUE;
3664 hh = hppa_elf_hash_entry (eh);
3667 if (sym_sec != NULL && discarded_section (sym_sec))
3668 RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section,
3670 elf_hppa_howto_table + r_type, 0,
3673 if (bfd_link_relocatable (info))
3676 /* Do any required modifications to the relocation value, and
3677 determine what types of dynamic info we need to output, if
3682 case R_PARISC_DLTIND14F:
3683 case R_PARISC_DLTIND14R:
3684 case R_PARISC_DLTIND21L:
3687 bfd_boolean do_got = FALSE;
3688 bfd_boolean reloc = bfd_link_pic (info);
3690 /* Relocation is to the entry for this symbol in the
3691 global offset table. */
3696 off = hh->eh.got.offset;
3697 dyn = htab->etab.dynamic_sections_created;
3698 reloc = (!UNDEFWEAK_NO_DYNAMIC_RELOC (info, &hh->eh)
3700 || (hh->eh.dynindx != -1
3701 && !SYMBOL_REFERENCES_LOCAL (info, &hh->eh))));
3703 || !WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn,
3704 bfd_link_pic (info),
3707 /* If we aren't going to call finish_dynamic_symbol,
3708 then we need to handle initialisation of the .got
3709 entry and create needed relocs here. Since the
3710 offset must always be a multiple of 4, we use the
3711 least significant bit to record whether we have
3712 initialised it already. */
3717 hh->eh.got.offset |= 1;
3724 /* Local symbol case. */
3725 if (local_got_offsets == NULL)
3728 off = local_got_offsets[r_symndx];
3730 /* The offset must always be a multiple of 4. We use
3731 the least significant bit to record whether we have
3732 already generated the necessary reloc. */
3737 local_got_offsets[r_symndx] |= 1;
3746 /* Output a dynamic relocation for this GOT entry.
3747 In this case it is relative to the base of the
3748 object because the symbol index is zero. */
3749 Elf_Internal_Rela outrel;
3751 asection *sec = htab->etab.srelgot;
3753 outrel.r_offset = (off
3754 + htab->etab.sgot->output_offset
3755 + htab->etab.sgot->output_section->vma);
3756 outrel.r_info = ELF32_R_INFO (0, R_PARISC_DIR32);
3757 outrel.r_addend = relocation;
3758 loc = sec->contents;
3759 loc += sec->reloc_count++ * sizeof (Elf32_External_Rela);
3760 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
3763 bfd_put_32 (output_bfd, relocation,
3764 htab->etab.sgot->contents + off);
3767 if (off >= (bfd_vma) -2)
3770 /* Add the base of the GOT to the relocation value. */
3772 + htab->etab.sgot->output_offset
3773 + htab->etab.sgot->output_section->vma);
3777 case R_PARISC_SEGREL32:
3778 /* If this is the first SEGREL relocation, then initialize
3779 the segment base values. */
3780 if (htab->text_segment_base == (bfd_vma) -1)
3781 bfd_map_over_sections (output_bfd, hppa_record_segment_addr, htab);
3784 case R_PARISC_PLABEL14R:
3785 case R_PARISC_PLABEL21L:
3786 case R_PARISC_PLABEL32:
3787 if (htab->etab.dynamic_sections_created)
3790 bfd_boolean do_plt = 0;
3791 /* If we have a global symbol with a PLT slot, then
3792 redirect this relocation to it. */
3795 off = hh->eh.plt.offset;
3796 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (1,
3797 bfd_link_pic (info),
3800 /* In a non-shared link, adjust_dynamic_symbols
3801 isn't called for symbols forced local. We
3802 need to write out the plt entry here. */
3807 hh->eh.plt.offset |= 1;
3814 bfd_vma *local_plt_offsets;
3816 if (local_got_offsets == NULL)
3819 local_plt_offsets = local_got_offsets + symtab_hdr->sh_info;
3820 off = local_plt_offsets[r_symndx];
3822 /* As for the local .got entry case, we use the last
3823 bit to record whether we've already initialised
3824 this local .plt entry. */
3829 local_plt_offsets[r_symndx] |= 1;
3836 if (bfd_link_pic (info))
3838 /* Output a dynamic IPLT relocation for this
3840 Elf_Internal_Rela outrel;
3842 asection *s = htab->etab.srelplt;
3844 outrel.r_offset = (off
3845 + htab->etab.splt->output_offset
3846 + htab->etab.splt->output_section->vma);
3847 outrel.r_info = ELF32_R_INFO (0, R_PARISC_IPLT);
3848 outrel.r_addend = relocation;
3850 loc += s->reloc_count++ * sizeof (Elf32_External_Rela);
3851 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
3855 bfd_put_32 (output_bfd,
3857 htab->etab.splt->contents + off);
3858 bfd_put_32 (output_bfd,
3859 elf_gp (htab->etab.splt->output_section->owner),
3860 htab->etab.splt->contents + off + 4);
3864 if (off >= (bfd_vma) -2)
3867 /* PLABELs contain function pointers. Relocation is to
3868 the entry for the function in the .plt. The magic +2
3869 offset signals to $$dyncall that the function pointer
3870 is in the .plt and thus has a gp pointer too.
3871 Exception: Undefined PLABELs should have a value of
3874 || (hh->eh.root.type != bfd_link_hash_undefweak
3875 && hh->eh.root.type != bfd_link_hash_undefined))
3878 + htab->etab.splt->output_offset
3879 + htab->etab.splt->output_section->vma
3886 case R_PARISC_DIR17F:
3887 case R_PARISC_DIR17R:
3888 case R_PARISC_DIR14F:
3889 case R_PARISC_DIR14R:
3890 case R_PARISC_DIR21L:
3891 case R_PARISC_DPREL14F:
3892 case R_PARISC_DPREL14R:
3893 case R_PARISC_DPREL21L:
3894 case R_PARISC_DIR32:
3895 if ((input_section->flags & SEC_ALLOC) == 0)
3898 if (bfd_link_pic (info)
3900 || hh->dyn_relocs != NULL)
3901 && ((hh != NULL && pc_dynrelocs (hh))
3902 || IS_ABSOLUTE_RELOC (r_type)))
3904 && hh->dyn_relocs != NULL))
3906 Elf_Internal_Rela outrel;
3911 /* When generating a shared object, these relocations
3912 are copied into the output file to be resolved at run
3915 outrel.r_addend = rela->r_addend;
3917 _bfd_elf_section_offset (output_bfd, info, input_section,
3919 skip = (outrel.r_offset == (bfd_vma) -1
3920 || outrel.r_offset == (bfd_vma) -2);
3921 outrel.r_offset += (input_section->output_offset
3922 + input_section->output_section->vma);
3926 memset (&outrel, 0, sizeof (outrel));
3929 && hh->eh.dynindx != -1
3931 || !IS_ABSOLUTE_RELOC (r_type)
3932 || !bfd_link_pic (info)
3933 || !SYMBOLIC_BIND (info, &hh->eh)
3934 || !hh->eh.def_regular))
3936 outrel.r_info = ELF32_R_INFO (hh->eh.dynindx, r_type);
3938 else /* It's a local symbol, or one marked to become local. */
3942 /* Add the absolute offset of the symbol. */
3943 outrel.r_addend += relocation;
3945 /* Global plabels need to be processed by the
3946 dynamic linker so that functions have at most one
3947 fptr. For this reason, we need to differentiate
3948 between global and local plabels, which we do by
3949 providing the function symbol for a global plabel
3950 reloc, and no symbol for local plabels. */
3953 && sym_sec->output_section != NULL
3954 && ! bfd_is_abs_section (sym_sec))
3958 osec = sym_sec->output_section;
3959 indx = elf_section_data (osec)->dynindx;
3962 osec = htab->etab.text_index_section;
3963 indx = elf_section_data (osec)->dynindx;
3965 BFD_ASSERT (indx != 0);
3967 /* We are turning this relocation into one
3968 against a section symbol, so subtract out the
3969 output section's address but not the offset
3970 of the input section in the output section. */
3971 outrel.r_addend -= osec->vma;
3974 outrel.r_info = ELF32_R_INFO (indx, r_type);
3976 sreloc = elf_section_data (input_section)->sreloc;
3980 loc = sreloc->contents;
3981 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela);
3982 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
3986 case R_PARISC_TLS_LDM21L:
3987 case R_PARISC_TLS_LDM14R:
3991 off = htab->tls_ldm_got.offset;
3996 Elf_Internal_Rela outrel;
3999 outrel.r_offset = (off
4000 + htab->etab.sgot->output_section->vma
4001 + htab->etab.sgot->output_offset);
4002 outrel.r_addend = 0;
4003 outrel.r_info = ELF32_R_INFO (0, R_PARISC_TLS_DTPMOD32);
4004 loc = htab->etab.srelgot->contents;
4005 loc += htab->etab.srelgot->reloc_count++ * sizeof (Elf32_External_Rela);
4007 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
4008 htab->tls_ldm_got.offset |= 1;
4011 /* Add the base of the GOT to the relocation value. */
4013 + htab->etab.sgot->output_offset
4014 + htab->etab.sgot->output_section->vma);
4019 case R_PARISC_TLS_LDO21L:
4020 case R_PARISC_TLS_LDO14R:
4021 relocation -= dtpoff_base (info);
4024 case R_PARISC_TLS_GD21L:
4025 case R_PARISC_TLS_GD14R:
4026 case R_PARISC_TLS_IE21L:
4027 case R_PARISC_TLS_IE14R:
4036 if (!htab->etab.dynamic_sections_created
4037 || hh->eh.dynindx == -1
4038 || SYMBOL_REFERENCES_LOCAL (info, &hh->eh)
4039 || UNDEFWEAK_NO_DYNAMIC_RELOC (info, &hh->eh))
4040 /* This is actually a static link, or it is a
4041 -Bsymbolic link and the symbol is defined
4042 locally, or the symbol was forced to be local
4043 because of a version file. */
4046 indx = hh->eh.dynindx;
4047 off = hh->eh.got.offset;
4048 tls_type = hh->tls_type;
4052 off = local_got_offsets[r_symndx];
4053 tls_type = hppa_elf_local_got_tls_type (input_bfd)[r_symndx];
4056 if (tls_type == GOT_UNKNOWN)
4063 bfd_boolean need_relocs = FALSE;
4064 Elf_Internal_Rela outrel;
4065 bfd_byte *loc = NULL;
4068 /* The GOT entries have not been initialized yet. Do it
4069 now, and emit any relocations. If both an IE GOT and a
4070 GD GOT are necessary, we emit the GD first. */
4073 || (bfd_link_pic (info)
4075 || !UNDEFWEAK_NO_DYNAMIC_RELOC (info, &hh->eh))))
4078 loc = htab->etab.srelgot->contents;
4079 loc += (htab->etab.srelgot->reloc_count
4080 * sizeof (Elf32_External_Rela));
4083 if (tls_type & GOT_TLS_GD)
4089 + htab->etab.sgot->output_section->vma
4090 + htab->etab.sgot->output_offset);
4092 = ELF32_R_INFO (indx, R_PARISC_TLS_DTPMOD32);
4093 outrel.r_addend = 0;
4094 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
4095 htab->etab.srelgot->reloc_count++;
4096 loc += sizeof (Elf32_External_Rela);
4098 = ELF32_R_INFO (indx, R_PARISC_TLS_DTPOFF32);
4099 outrel.r_offset += 4;
4100 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
4101 htab->etab.srelgot->reloc_count++;
4102 loc += sizeof (Elf32_External_Rela);
4103 bfd_put_32 (output_bfd, 0,
4104 htab->etab.sgot->contents + cur_off);
4105 bfd_put_32 (output_bfd, 0,
4106 htab->etab.sgot->contents + cur_off + 4);
4110 /* If we are not emitting relocations for a
4111 general dynamic reference, then we must be in a
4112 static link or an executable link with the
4113 symbol binding locally. Mark it as belonging
4114 to module 1, the executable. */
4115 bfd_put_32 (output_bfd, 1,
4116 htab->etab.sgot->contents + cur_off);
4117 bfd_put_32 (output_bfd, relocation - dtpoff_base (info),
4118 htab->etab.sgot->contents + cur_off + 4);
4123 if (tls_type & GOT_TLS_IE)
4126 && !(bfd_link_executable (info)
4127 && SYMBOL_REFERENCES_LOCAL (info, &hh->eh)))
4131 + htab->etab.sgot->output_section->vma
4132 + htab->etab.sgot->output_offset);
4133 outrel.r_info = ELF32_R_INFO (indx,
4134 R_PARISC_TLS_TPREL32);
4136 outrel.r_addend = relocation - dtpoff_base (info);
4138 outrel.r_addend = 0;
4139 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
4140 htab->etab.srelgot->reloc_count++;
4141 loc += sizeof (Elf32_External_Rela);
4144 bfd_put_32 (output_bfd, tpoff (info, relocation),
4145 htab->etab.sgot->contents + cur_off);
4150 hh->eh.got.offset |= 1;
4152 local_got_offsets[r_symndx] |= 1;
4155 if ((tls_type & GOT_NORMAL) != 0
4156 && (tls_type & (GOT_TLS_GD | GOT_TLS_LDM | GOT_TLS_IE)) != 0)
4159 _bfd_error_handler (_("%s has both normal and TLS relocs"),
4163 Elf_Internal_Sym *isym
4164 = bfd_sym_from_r_symndx (&htab->sym_cache,
4165 input_bfd, r_symndx);
4169 = bfd_elf_string_from_elf_section (input_bfd,
4170 symtab_hdr->sh_link,
4172 if (sym_name == NULL)
4174 if (*sym_name == '\0')
4175 sym_name = bfd_section_name (input_bfd, sym_sec);
4177 (_("%B:%s has both normal and TLS relocs"),
4178 input_bfd, sym_name);
4180 bfd_set_error (bfd_error_bad_value);
4184 if ((tls_type & GOT_TLS_GD)
4185 && r_type != R_PARISC_TLS_GD21L
4186 && r_type != R_PARISC_TLS_GD14R)
4187 off += 2 * GOT_ENTRY_SIZE;
4189 /* Add the base of the GOT to the relocation value. */
4191 + htab->etab.sgot->output_offset
4192 + htab->etab.sgot->output_section->vma);
4197 case R_PARISC_TLS_LE21L:
4198 case R_PARISC_TLS_LE14R:
4200 relocation = tpoff (info, relocation);
4209 rstatus = final_link_relocate (input_section, contents, rela, relocation,
4210 htab, sym_sec, hh, info);
4212 if (rstatus == bfd_reloc_ok)
4216 sym_name = hh_name (hh);
4219 sym_name = bfd_elf_string_from_elf_section (input_bfd,
4220 symtab_hdr->sh_link,
4222 if (sym_name == NULL)
4224 if (*sym_name == '\0')
4225 sym_name = bfd_section_name (input_bfd, sym_sec);
4228 howto = elf_hppa_howto_table + r_type;
4230 if (rstatus == bfd_reloc_undefined || rstatus == bfd_reloc_notsupported)
4232 if (rstatus == bfd_reloc_notsupported || !warned_undef)
4235 /* xgettext:c-format */
4236 (_("%B(%A+%#Lx): cannot handle %s for %s"),
4242 bfd_set_error (bfd_error_bad_value);
4247 (*info->callbacks->reloc_overflow)
4248 (info, (hh ? &hh->eh.root : NULL), sym_name, howto->name,
4249 (bfd_vma) 0, input_bfd, input_section, rela->r_offset);
4255 /* Finish up dynamic symbol handling. We set the contents of various
4256 dynamic sections here. */
4259 elf32_hppa_finish_dynamic_symbol (bfd *output_bfd,
4260 struct bfd_link_info *info,
4261 struct elf_link_hash_entry *eh,
4262 Elf_Internal_Sym *sym)
4264 struct elf32_hppa_link_hash_table *htab;
4265 Elf_Internal_Rela rela;
4268 htab = hppa_link_hash_table (info);
4272 if (eh->plt.offset != (bfd_vma) -1)
4276 if (eh->plt.offset & 1)
4279 /* This symbol has an entry in the procedure linkage table. Set
4282 The format of a plt entry is
4287 if (eh->root.type == bfd_link_hash_defined
4288 || eh->root.type == bfd_link_hash_defweak)
4290 value = eh->root.u.def.value;
4291 if (eh->root.u.def.section->output_section != NULL)
4292 value += (eh->root.u.def.section->output_offset
4293 + eh->root.u.def.section->output_section->vma);
4296 /* Create a dynamic IPLT relocation for this entry. */
4297 rela.r_offset = (eh->plt.offset
4298 + htab->etab.splt->output_offset
4299 + htab->etab.splt->output_section->vma);
4300 if (eh->dynindx != -1)
4302 rela.r_info = ELF32_R_INFO (eh->dynindx, R_PARISC_IPLT);
4307 /* This symbol has been marked to become local, and is
4308 used by a plabel so must be kept in the .plt. */
4309 rela.r_info = ELF32_R_INFO (0, R_PARISC_IPLT);
4310 rela.r_addend = value;
4313 loc = htab->etab.srelplt->contents;
4314 loc += htab->etab.srelplt->reloc_count++ * sizeof (Elf32_External_Rela);
4315 bfd_elf32_swap_reloca_out (htab->etab.splt->output_section->owner, &rela, loc);
4317 if (!eh->def_regular)
4319 /* Mark the symbol as undefined, rather than as defined in
4320 the .plt section. Leave the value alone. */
4321 sym->st_shndx = SHN_UNDEF;
4325 if (eh->got.offset != (bfd_vma) -1
4326 && (hppa_elf_hash_entry (eh)->tls_type & GOT_NORMAL) != 0
4327 && !UNDEFWEAK_NO_DYNAMIC_RELOC (info, eh))
4329 bfd_boolean is_dyn = (eh->dynindx != -1
4330 && !SYMBOL_REFERENCES_LOCAL (info, eh));
4332 if (is_dyn || bfd_link_pic (info))
4334 /* This symbol has an entry in the global offset table. Set
4337 rela.r_offset = ((eh->got.offset &~ (bfd_vma) 1)
4338 + htab->etab.sgot->output_offset
4339 + htab->etab.sgot->output_section->vma);
4341 /* If this is a -Bsymbolic link and the symbol is defined
4342 locally or was forced to be local because of a version
4343 file, we just want to emit a RELATIVE reloc. The entry
4344 in the global offset table will already have been
4345 initialized in the relocate_section function. */
4348 rela.r_info = ELF32_R_INFO (0, R_PARISC_DIR32);
4349 rela.r_addend = (eh->root.u.def.value
4350 + eh->root.u.def.section->output_offset
4351 + eh->root.u.def.section->output_section->vma);
4355 if ((eh->got.offset & 1) != 0)
4358 bfd_put_32 (output_bfd, 0,
4359 htab->etab.sgot->contents + (eh->got.offset & ~1));
4360 rela.r_info = ELF32_R_INFO (eh->dynindx, R_PARISC_DIR32);
4364 loc = htab->etab.srelgot->contents;
4365 loc += (htab->etab.srelgot->reloc_count++
4366 * sizeof (Elf32_External_Rela));
4367 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
4375 /* This symbol needs a copy reloc. Set it up. */
4377 if (! (eh->dynindx != -1
4378 && (eh->root.type == bfd_link_hash_defined
4379 || eh->root.type == bfd_link_hash_defweak)))
4382 rela.r_offset = (eh->root.u.def.value
4383 + eh->root.u.def.section->output_offset
4384 + eh->root.u.def.section->output_section->vma);
4386 rela.r_info = ELF32_R_INFO (eh->dynindx, R_PARISC_COPY);
4387 if (eh->root.u.def.section == htab->etab.sdynrelro)
4388 sec = htab->etab.sreldynrelro;
4390 sec = htab->etab.srelbss;
4391 loc = sec->contents + sec->reloc_count++ * sizeof (Elf32_External_Rela);
4392 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
4395 /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. */
4396 if (eh == htab->etab.hdynamic || eh == htab->etab.hgot)
4398 sym->st_shndx = SHN_ABS;
4404 /* Used to decide how to sort relocs in an optimal manner for the
4405 dynamic linker, before writing them out. */
4407 static enum elf_reloc_type_class
4408 elf32_hppa_reloc_type_class (const struct bfd_link_info *info ATTRIBUTE_UNUSED,
4409 const asection *rel_sec ATTRIBUTE_UNUSED,
4410 const Elf_Internal_Rela *rela)
4412 /* Handle TLS relocs first; we don't want them to be marked
4413 relative by the "if (ELF32_R_SYM (rela->r_info) == STN_UNDEF)"
4415 switch ((int) ELF32_R_TYPE (rela->r_info))
4417 case R_PARISC_TLS_DTPMOD32:
4418 case R_PARISC_TLS_DTPOFF32:
4419 case R_PARISC_TLS_TPREL32:
4420 return reloc_class_normal;
4423 if (ELF32_R_SYM (rela->r_info) == STN_UNDEF)
4424 return reloc_class_relative;
4426 switch ((int) ELF32_R_TYPE (rela->r_info))
4429 return reloc_class_plt;
4431 return reloc_class_copy;
4433 return reloc_class_normal;
4437 /* Finish up the dynamic sections. */
4440 elf32_hppa_finish_dynamic_sections (bfd *output_bfd,
4441 struct bfd_link_info *info)
4444 struct elf32_hppa_link_hash_table *htab;
4448 htab = hppa_link_hash_table (info);
4452 dynobj = htab->etab.dynobj;
4454 sgot = htab->etab.sgot;
4455 /* A broken linker script might have discarded the dynamic sections.
4456 Catch this here so that we do not seg-fault later on. */
4457 if (sgot != NULL && bfd_is_abs_section (sgot->output_section))
4460 sdyn = bfd_get_linker_section (dynobj, ".dynamic");
4462 if (htab->etab.dynamic_sections_created)
4464 Elf32_External_Dyn *dyncon, *dynconend;
4469 dyncon = (Elf32_External_Dyn *) sdyn->contents;
4470 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
4471 for (; dyncon < dynconend; dyncon++)
4473 Elf_Internal_Dyn dyn;
4476 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
4484 /* Use PLTGOT to set the GOT register. */
4485 dyn.d_un.d_ptr = elf_gp (output_bfd);
4489 s = htab->etab.srelplt;
4490 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
4494 s = htab->etab.srelplt;
4495 dyn.d_un.d_val = s->size;
4499 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
4503 if (sgot != NULL && sgot->size != 0)
4505 /* Fill in the first entry in the global offset table.
4506 We use it to point to our dynamic section, if we have one. */
4507 bfd_put_32 (output_bfd,
4508 sdyn ? sdyn->output_section->vma + sdyn->output_offset : 0,
4511 /* The second entry is reserved for use by the dynamic linker. */
4512 memset (sgot->contents + GOT_ENTRY_SIZE, 0, GOT_ENTRY_SIZE);
4514 /* Set .got entry size. */
4515 elf_section_data (sgot->output_section)
4516 ->this_hdr.sh_entsize = GOT_ENTRY_SIZE;
4519 if (htab->etab.splt != NULL && htab->etab.splt->size != 0)
4521 /* Set plt entry size to 0 instead of PLT_ENTRY_SIZE, since we add the
4522 plt stubs and as such the section does not hold a table of fixed-size
4524 elf_section_data (htab->etab.splt->output_section)->this_hdr.sh_entsize = 0;
4526 if (htab->need_plt_stub)
4528 /* Set up the .plt stub. */
4529 memcpy (htab->etab.splt->contents
4530 + htab->etab.splt->size - sizeof (plt_stub),
4531 plt_stub, sizeof (plt_stub));
4533 if ((htab->etab.splt->output_offset
4534 + htab->etab.splt->output_section->vma
4535 + htab->etab.splt->size)
4536 != (sgot->output_offset
4537 + sgot->output_section->vma))
4540 (_(".got section not immediately after .plt section"));
4549 /* Called when writing out an object file to decide the type of a
4552 elf32_hppa_elf_get_symbol_type (Elf_Internal_Sym *elf_sym, int type)
4554 if (ELF_ST_TYPE (elf_sym->st_info) == STT_PARISC_MILLI)
4555 return STT_PARISC_MILLI;
4560 /* Misc BFD support code. */
4561 #define bfd_elf32_bfd_is_local_label_name elf_hppa_is_local_label_name
4562 #define bfd_elf32_bfd_reloc_type_lookup elf_hppa_reloc_type_lookup
4563 #define bfd_elf32_bfd_reloc_name_lookup elf_hppa_reloc_name_lookup
4564 #define elf_info_to_howto elf_hppa_info_to_howto
4565 #define elf_info_to_howto_rel elf_hppa_info_to_howto_rel
4567 /* Stuff for the BFD linker. */
4568 #define bfd_elf32_bfd_final_link elf32_hppa_final_link
4569 #define bfd_elf32_bfd_link_hash_table_create elf32_hppa_link_hash_table_create
4570 #define elf_backend_adjust_dynamic_symbol elf32_hppa_adjust_dynamic_symbol
4571 #define elf_backend_copy_indirect_symbol elf32_hppa_copy_indirect_symbol
4572 #define elf_backend_check_relocs elf32_hppa_check_relocs
4573 #define elf_backend_relocs_compatible _bfd_elf_relocs_compatible
4574 #define elf_backend_create_dynamic_sections elf32_hppa_create_dynamic_sections
4575 #define elf_backend_fake_sections elf_hppa_fake_sections
4576 #define elf_backend_relocate_section elf32_hppa_relocate_section
4577 #define elf_backend_hide_symbol elf32_hppa_hide_symbol
4578 #define elf_backend_finish_dynamic_symbol elf32_hppa_finish_dynamic_symbol
4579 #define elf_backend_finish_dynamic_sections elf32_hppa_finish_dynamic_sections
4580 #define elf_backend_size_dynamic_sections elf32_hppa_size_dynamic_sections
4581 #define elf_backend_init_index_section _bfd_elf_init_1_index_section
4582 #define elf_backend_gc_mark_hook elf32_hppa_gc_mark_hook
4583 #define elf_backend_grok_prstatus elf32_hppa_grok_prstatus
4584 #define elf_backend_grok_psinfo elf32_hppa_grok_psinfo
4585 #define elf_backend_object_p elf32_hppa_object_p
4586 #define elf_backend_final_write_processing elf_hppa_final_write_processing
4587 #define elf_backend_get_symbol_type elf32_hppa_elf_get_symbol_type
4588 #define elf_backend_reloc_type_class elf32_hppa_reloc_type_class
4589 #define elf_backend_action_discarded elf_hppa_action_discarded
4591 #define elf_backend_can_gc_sections 1
4592 #define elf_backend_can_refcount 1
4593 #define elf_backend_plt_alignment 2
4594 #define elf_backend_want_got_plt 0
4595 #define elf_backend_plt_readonly 0
4596 #define elf_backend_want_plt_sym 0
4597 #define elf_backend_got_header_size 8
4598 #define elf_backend_want_dynrelro 1
4599 #define elf_backend_rela_normal 1
4600 #define elf_backend_dtrel_excludes_plt 1
4601 #define elf_backend_no_page_alias 1
4603 #define TARGET_BIG_SYM hppa_elf32_vec
4604 #define TARGET_BIG_NAME "elf32-hppa"
4605 #define ELF_ARCH bfd_arch_hppa
4606 #define ELF_TARGET_ID HPPA32_ELF_DATA
4607 #define ELF_MACHINE_CODE EM_PARISC
4608 #define ELF_MAXPAGESIZE 0x1000
4609 #define ELF_OSABI ELFOSABI_HPUX
4610 #define elf32_bed elf32_hppa_hpux_bed
4612 #include "elf32-target.h"
4614 #undef TARGET_BIG_SYM
4615 #define TARGET_BIG_SYM hppa_elf32_linux_vec
4616 #undef TARGET_BIG_NAME
4617 #define TARGET_BIG_NAME "elf32-hppa-linux"
4619 #define ELF_OSABI ELFOSABI_GNU
4621 #define elf32_bed elf32_hppa_linux_bed
4623 #include "elf32-target.h"
4625 #undef TARGET_BIG_SYM
4626 #define TARGET_BIG_SYM hppa_elf32_nbsd_vec
4627 #undef TARGET_BIG_NAME
4628 #define TARGET_BIG_NAME "elf32-hppa-netbsd"
4630 #define ELF_OSABI ELFOSABI_NETBSD
4632 #define elf32_bed elf32_hppa_netbsd_bed
4634 #include "elf32-target.h"