1 /* BFD back-end for HP PA-RISC ELF files.
2 Copyright (C) 1990-2015 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
167 /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
168 copying dynamic variables from a shared lib into an app's dynbss
169 section, and instead use a dynamic relocation to point into the
171 #define ELIMINATE_COPY_RELOCS 1
173 enum elf32_hppa_stub_type
175 hppa_stub_long_branch,
176 hppa_stub_long_branch_shared,
178 hppa_stub_import_shared,
183 struct elf32_hppa_stub_hash_entry
185 /* Base hash table entry structure. */
186 struct bfd_hash_entry bh_root;
188 /* The stub section. */
191 /* Offset within stub_sec of the beginning of this stub. */
194 /* Given the symbol's value and its section we can determine its final
195 value when building the stubs (so the stub knows where to jump. */
196 bfd_vma target_value;
197 asection *target_section;
199 enum elf32_hppa_stub_type stub_type;
201 /* The symbol table entry, if any, that this was derived from. */
202 struct elf32_hppa_link_hash_entry *hh;
204 /* Where this stub is being called from, or, in the case of combined
205 stub sections, the first input section in the group. */
209 struct elf32_hppa_link_hash_entry
211 struct elf_link_hash_entry eh;
213 /* A pointer to the most recently used stub hash entry against this
215 struct elf32_hppa_stub_hash_entry *hsh_cache;
217 /* Used to count relocations for delayed sizing of relocation
219 struct elf32_hppa_dyn_reloc_entry
221 /* Next relocation in the chain. */
222 struct elf32_hppa_dyn_reloc_entry *hdh_next;
224 /* The input section of the reloc. */
227 /* Number of relocs copied in this section. */
230 #if RELATIVE_DYNRELOCS
231 /* Number of relative relocs copied for the input section. */
232 bfd_size_type relative_count;
238 GOT_UNKNOWN = 0, GOT_NORMAL = 1, GOT_TLS_GD = 2, GOT_TLS_LDM = 4, GOT_TLS_IE = 8
241 /* Set if this symbol is used by a plabel reloc. */
242 unsigned int plabel:1;
245 struct elf32_hppa_link_hash_table
247 /* The main hash table. */
248 struct elf_link_hash_table etab;
250 /* The stub hash table. */
251 struct bfd_hash_table bstab;
253 /* Linker stub bfd. */
256 /* Linker call-backs. */
257 asection * (*add_stub_section) (const char *, asection *);
258 void (*layout_sections_again) (void);
260 /* Array to keep track of which stub sections have been created, and
261 information on stub grouping. */
264 /* This is the section to which stubs in the group will be
267 /* The stub section. */
271 /* Assorted information used by elf32_hppa_size_stubs. */
272 unsigned int bfd_count;
273 unsigned int top_index;
274 asection **input_list;
275 Elf_Internal_Sym **all_local_syms;
277 /* Short-cuts to get to dynamic linker sections. */
285 /* Used during a final link to store the base of the text and data
286 segments so that we can perform SEGREL relocations. */
287 bfd_vma text_segment_base;
288 bfd_vma data_segment_base;
290 /* Whether we support multiple sub-spaces for shared libs. */
291 unsigned int multi_subspace:1;
293 /* Flags set when various size branches are detected. Used to
294 select suitable defaults for the stub group size. */
295 unsigned int has_12bit_branch:1;
296 unsigned int has_17bit_branch:1;
297 unsigned int has_22bit_branch:1;
299 /* Set if we need a .plt stub to support lazy dynamic linking. */
300 unsigned int need_plt_stub:1;
302 /* Small local sym cache. */
303 struct sym_cache sym_cache;
305 /* Data for LDM relocations. */
308 bfd_signed_vma refcount;
313 /* Various hash macros and functions. */
314 #define hppa_link_hash_table(p) \
315 (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
316 == HPPA32_ELF_DATA ? ((struct elf32_hppa_link_hash_table *) ((p)->hash)) : NULL)
318 #define hppa_elf_hash_entry(ent) \
319 ((struct elf32_hppa_link_hash_entry *)(ent))
321 #define hppa_stub_hash_entry(ent) \
322 ((struct elf32_hppa_stub_hash_entry *)(ent))
324 #define hppa_stub_hash_lookup(table, string, create, copy) \
325 ((struct elf32_hppa_stub_hash_entry *) \
326 bfd_hash_lookup ((table), (string), (create), (copy)))
328 #define hppa_elf_local_got_tls_type(abfd) \
329 ((char *)(elf_local_got_offsets (abfd) + (elf_tdata (abfd)->symtab_hdr.sh_info * 2)))
331 #define hh_name(hh) \
332 (hh ? hh->eh.root.root.string : "<undef>")
334 #define eh_name(eh) \
335 (eh ? eh->root.root.string : "<undef>")
337 /* Assorted hash table functions. */
339 /* Initialize an entry in the stub hash table. */
341 static struct bfd_hash_entry *
342 stub_hash_newfunc (struct bfd_hash_entry *entry,
343 struct bfd_hash_table *table,
346 /* Allocate the structure if it has not already been allocated by a
350 entry = bfd_hash_allocate (table,
351 sizeof (struct elf32_hppa_stub_hash_entry));
356 /* Call the allocation method of the superclass. */
357 entry = bfd_hash_newfunc (entry, table, string);
360 struct elf32_hppa_stub_hash_entry *hsh;
362 /* Initialize the local fields. */
363 hsh = hppa_stub_hash_entry (entry);
364 hsh->stub_sec = NULL;
365 hsh->stub_offset = 0;
366 hsh->target_value = 0;
367 hsh->target_section = NULL;
368 hsh->stub_type = hppa_stub_long_branch;
376 /* Initialize an entry in the link hash table. */
378 static struct bfd_hash_entry *
379 hppa_link_hash_newfunc (struct bfd_hash_entry *entry,
380 struct bfd_hash_table *table,
383 /* Allocate the structure if it has not already been allocated by a
387 entry = bfd_hash_allocate (table,
388 sizeof (struct elf32_hppa_link_hash_entry));
393 /* Call the allocation method of the superclass. */
394 entry = _bfd_elf_link_hash_newfunc (entry, table, string);
397 struct elf32_hppa_link_hash_entry *hh;
399 /* Initialize the local fields. */
400 hh = hppa_elf_hash_entry (entry);
401 hh->hsh_cache = NULL;
402 hh->dyn_relocs = NULL;
404 hh->tls_type = GOT_UNKNOWN;
410 /* Free the derived linker hash table. */
413 elf32_hppa_link_hash_table_free (bfd *obfd)
415 struct elf32_hppa_link_hash_table *htab
416 = (struct elf32_hppa_link_hash_table *) obfd->link.hash;
418 bfd_hash_table_free (&htab->bstab);
419 _bfd_elf_link_hash_table_free (obfd);
422 /* Create the derived linker hash table. The PA ELF port uses the derived
423 hash table to keep information specific to the PA ELF linker (without
424 using static variables). */
426 static struct bfd_link_hash_table *
427 elf32_hppa_link_hash_table_create (bfd *abfd)
429 struct elf32_hppa_link_hash_table *htab;
430 bfd_size_type amt = sizeof (*htab);
432 htab = bfd_zmalloc (amt);
436 if (!_bfd_elf_link_hash_table_init (&htab->etab, abfd, hppa_link_hash_newfunc,
437 sizeof (struct elf32_hppa_link_hash_entry),
444 /* Init the stub hash table too. */
445 if (!bfd_hash_table_init (&htab->bstab, stub_hash_newfunc,
446 sizeof (struct elf32_hppa_stub_hash_entry)))
448 _bfd_elf_link_hash_table_free (abfd);
451 htab->etab.root.hash_table_free = elf32_hppa_link_hash_table_free;
453 htab->text_segment_base = (bfd_vma) -1;
454 htab->data_segment_base = (bfd_vma) -1;
455 return &htab->etab.root;
458 /* Build a name for an entry in the stub hash table. */
461 hppa_stub_name (const asection *input_section,
462 const asection *sym_sec,
463 const struct elf32_hppa_link_hash_entry *hh,
464 const Elf_Internal_Rela *rela)
471 len = 8 + 1 + strlen (hh_name (hh)) + 1 + 8 + 1;
472 stub_name = bfd_malloc (len);
473 if (stub_name != NULL)
474 sprintf (stub_name, "%08x_%s+%x",
475 input_section->id & 0xffffffff,
477 (int) rela->r_addend & 0xffffffff);
481 len = 8 + 1 + 8 + 1 + 8 + 1 + 8 + 1;
482 stub_name = bfd_malloc (len);
483 if (stub_name != NULL)
484 sprintf (stub_name, "%08x_%x:%x+%x",
485 input_section->id & 0xffffffff,
486 sym_sec->id & 0xffffffff,
487 (int) ELF32_R_SYM (rela->r_info) & 0xffffffff,
488 (int) rela->r_addend & 0xffffffff);
493 /* Look up an entry in the stub hash. Stub entries are cached because
494 creating the stub name takes a bit of time. */
496 static struct elf32_hppa_stub_hash_entry *
497 hppa_get_stub_entry (const asection *input_section,
498 const asection *sym_sec,
499 struct elf32_hppa_link_hash_entry *hh,
500 const Elf_Internal_Rela *rela,
501 struct elf32_hppa_link_hash_table *htab)
503 struct elf32_hppa_stub_hash_entry *hsh_entry;
504 const asection *id_sec;
506 /* If this input section is part of a group of sections sharing one
507 stub section, then use the id of the first section in the group.
508 Stub names need to include a section id, as there may well be
509 more than one stub used to reach say, printf, and we need to
510 distinguish between them. */
511 id_sec = htab->stub_group[input_section->id].link_sec;
513 if (hh != NULL && hh->hsh_cache != NULL
514 && hh->hsh_cache->hh == hh
515 && hh->hsh_cache->id_sec == id_sec)
517 hsh_entry = hh->hsh_cache;
523 stub_name = hppa_stub_name (id_sec, sym_sec, hh, rela);
524 if (stub_name == NULL)
527 hsh_entry = hppa_stub_hash_lookup (&htab->bstab,
528 stub_name, FALSE, FALSE);
530 hh->hsh_cache = hsh_entry;
538 /* Add a new stub entry to the stub hash. Not all fields of the new
539 stub entry are initialised. */
541 static struct elf32_hppa_stub_hash_entry *
542 hppa_add_stub (const char *stub_name,
544 struct elf32_hppa_link_hash_table *htab)
548 struct elf32_hppa_stub_hash_entry *hsh;
550 link_sec = htab->stub_group[section->id].link_sec;
551 stub_sec = htab->stub_group[section->id].stub_sec;
552 if (stub_sec == NULL)
554 stub_sec = htab->stub_group[link_sec->id].stub_sec;
555 if (stub_sec == NULL)
561 namelen = strlen (link_sec->name);
562 len = namelen + sizeof (STUB_SUFFIX);
563 s_name = bfd_alloc (htab->stub_bfd, len);
567 memcpy (s_name, link_sec->name, namelen);
568 memcpy (s_name + namelen, STUB_SUFFIX, sizeof (STUB_SUFFIX));
569 stub_sec = (*htab->add_stub_section) (s_name, link_sec);
570 if (stub_sec == NULL)
572 htab->stub_group[link_sec->id].stub_sec = stub_sec;
574 htab->stub_group[section->id].stub_sec = stub_sec;
577 /* Enter this entry into the linker stub hash table. */
578 hsh = hppa_stub_hash_lookup (&htab->bstab, stub_name,
582 (*_bfd_error_handler) (_("%B: cannot create stub entry %s"),
588 hsh->stub_sec = stub_sec;
589 hsh->stub_offset = 0;
590 hsh->id_sec = link_sec;
594 /* Determine the type of stub needed, if any, for a call. */
596 static enum elf32_hppa_stub_type
597 hppa_type_of_stub (asection *input_sec,
598 const Elf_Internal_Rela *rela,
599 struct elf32_hppa_link_hash_entry *hh,
601 struct bfd_link_info *info)
604 bfd_vma branch_offset;
605 bfd_vma max_branch_offset;
609 && hh->eh.plt.offset != (bfd_vma) -1
610 && hh->eh.dynindx != -1
612 && (bfd_link_pic (info)
613 || !hh->eh.def_regular
614 || hh->eh.root.type == bfd_link_hash_defweak))
616 /* We need an import stub. Decide between hppa_stub_import
617 and hppa_stub_import_shared later. */
618 return hppa_stub_import;
621 /* Determine where the call point is. */
622 location = (input_sec->output_offset
623 + input_sec->output_section->vma
626 branch_offset = destination - location - 8;
627 r_type = ELF32_R_TYPE (rela->r_info);
629 /* Determine if a long branch stub is needed. parisc branch offsets
630 are relative to the second instruction past the branch, ie. +8
631 bytes on from the branch instruction location. The offset is
632 signed and counts in units of 4 bytes. */
633 if (r_type == (unsigned int) R_PARISC_PCREL17F)
634 max_branch_offset = (1 << (17 - 1)) << 2;
636 else if (r_type == (unsigned int) R_PARISC_PCREL12F)
637 max_branch_offset = (1 << (12 - 1)) << 2;
639 else /* R_PARISC_PCREL22F. */
640 max_branch_offset = (1 << (22 - 1)) << 2;
642 if (branch_offset + max_branch_offset >= 2*max_branch_offset)
643 return hppa_stub_long_branch;
645 return hppa_stub_none;
648 /* Build one linker stub as defined by the stub hash table entry GEN_ENTRY.
649 IN_ARG contains the link info pointer. */
651 #define LDIL_R1 0x20200000 /* ldil LR'XXX,%r1 */
652 #define BE_SR4_R1 0xe0202002 /* be,n RR'XXX(%sr4,%r1) */
654 #define BL_R1 0xe8200000 /* b,l .+8,%r1 */
655 #define ADDIL_R1 0x28200000 /* addil LR'XXX,%r1,%r1 */
656 #define DEPI_R1 0xd4201c1e /* depi 0,31,2,%r1 */
658 #define ADDIL_DP 0x2b600000 /* addil LR'XXX,%dp,%r1 */
659 #define LDW_R1_R21 0x48350000 /* ldw RR'XXX(%sr0,%r1),%r21 */
660 #define BV_R0_R21 0xeaa0c000 /* bv %r0(%r21) */
661 #define LDW_R1_R19 0x48330000 /* ldw RR'XXX(%sr0,%r1),%r19 */
663 #define ADDIL_R19 0x2a600000 /* addil LR'XXX,%r19,%r1 */
664 #define LDW_R1_DP 0x483b0000 /* ldw RR'XXX(%sr0,%r1),%dp */
666 #define LDSID_R21_R1 0x02a010a1 /* ldsid (%sr0,%r21),%r1 */
667 #define MTSP_R1 0x00011820 /* mtsp %r1,%sr0 */
668 #define BE_SR0_R21 0xe2a00000 /* be 0(%sr0,%r21) */
669 #define STW_RP 0x6bc23fd1 /* stw %rp,-24(%sr0,%sp) */
671 #define BL22_RP 0xe800a002 /* b,l,n XXX,%rp */
672 #define BL_RP 0xe8400002 /* b,l,n XXX,%rp */
673 #define NOP 0x08000240 /* nop */
674 #define LDW_RP 0x4bc23fd1 /* ldw -24(%sr0,%sp),%rp */
675 #define LDSID_RP_R1 0x004010a1 /* ldsid (%sr0,%rp),%r1 */
676 #define BE_SR0_RP 0xe0400002 /* be,n 0(%sr0,%rp) */
683 #define LDW_R1_DLT LDW_R1_R19
685 #define LDW_R1_DLT LDW_R1_DP
689 hppa_build_one_stub (struct bfd_hash_entry *bh, void *in_arg)
691 struct elf32_hppa_stub_hash_entry *hsh;
692 struct bfd_link_info *info;
693 struct elf32_hppa_link_hash_table *htab;
703 /* Massage our args to the form they really have. */
704 hsh = hppa_stub_hash_entry (bh);
705 info = (struct bfd_link_info *)in_arg;
707 htab = hppa_link_hash_table (info);
711 stub_sec = hsh->stub_sec;
713 /* Make a note of the offset within the stubs for this entry. */
714 hsh->stub_offset = stub_sec->size;
715 loc = stub_sec->contents + hsh->stub_offset;
717 stub_bfd = stub_sec->owner;
719 switch (hsh->stub_type)
721 case hppa_stub_long_branch:
722 /* Create the long branch. A long branch is formed with "ldil"
723 loading the upper bits of the target address into a register,
724 then branching with "be" which adds in the lower bits.
725 The "be" has its delay slot nullified. */
726 sym_value = (hsh->target_value
727 + hsh->target_section->output_offset
728 + hsh->target_section->output_section->vma);
730 val = hppa_field_adjust (sym_value, 0, e_lrsel);
731 insn = hppa_rebuild_insn ((int) LDIL_R1, val, 21);
732 bfd_put_32 (stub_bfd, insn, loc);
734 val = hppa_field_adjust (sym_value, 0, e_rrsel) >> 2;
735 insn = hppa_rebuild_insn ((int) BE_SR4_R1, val, 17);
736 bfd_put_32 (stub_bfd, insn, loc + 4);
741 case hppa_stub_long_branch_shared:
742 /* Branches are relative. This is where we are going to. */
743 sym_value = (hsh->target_value
744 + hsh->target_section->output_offset
745 + hsh->target_section->output_section->vma);
747 /* And this is where we are coming from, more or less. */
748 sym_value -= (hsh->stub_offset
749 + stub_sec->output_offset
750 + stub_sec->output_section->vma);
752 bfd_put_32 (stub_bfd, (bfd_vma) BL_R1, loc);
753 val = hppa_field_adjust (sym_value, (bfd_signed_vma) -8, e_lrsel);
754 insn = hppa_rebuild_insn ((int) ADDIL_R1, val, 21);
755 bfd_put_32 (stub_bfd, insn, loc + 4);
757 val = hppa_field_adjust (sym_value, (bfd_signed_vma) -8, e_rrsel) >> 2;
758 insn = hppa_rebuild_insn ((int) BE_SR4_R1, val, 17);
759 bfd_put_32 (stub_bfd, insn, loc + 8);
763 case hppa_stub_import:
764 case hppa_stub_import_shared:
765 off = hsh->hh->eh.plt.offset;
766 if (off >= (bfd_vma) -2)
769 off &= ~ (bfd_vma) 1;
771 + htab->splt->output_offset
772 + htab->splt->output_section->vma
773 - elf_gp (htab->splt->output_section->owner));
777 if (hsh->stub_type == hppa_stub_import_shared)
780 val = hppa_field_adjust (sym_value, 0, e_lrsel),
781 insn = hppa_rebuild_insn ((int) insn, val, 21);
782 bfd_put_32 (stub_bfd, insn, loc);
784 /* It is critical to use lrsel/rrsel here because we are using
785 two different offsets (+0 and +4) from sym_value. If we use
786 lsel/rsel then with unfortunate sym_values we will round
787 sym_value+4 up to the next 2k block leading to a mis-match
788 between the lsel and rsel value. */
789 val = hppa_field_adjust (sym_value, 0, e_rrsel);
790 insn = hppa_rebuild_insn ((int) LDW_R1_R21, val, 14);
791 bfd_put_32 (stub_bfd, insn, loc + 4);
793 if (htab->multi_subspace)
795 val = hppa_field_adjust (sym_value, (bfd_signed_vma) 4, e_rrsel);
796 insn = hppa_rebuild_insn ((int) LDW_R1_DLT, val, 14);
797 bfd_put_32 (stub_bfd, insn, loc + 8);
799 bfd_put_32 (stub_bfd, (bfd_vma) LDSID_R21_R1, loc + 12);
800 bfd_put_32 (stub_bfd, (bfd_vma) MTSP_R1, loc + 16);
801 bfd_put_32 (stub_bfd, (bfd_vma) BE_SR0_R21, loc + 20);
802 bfd_put_32 (stub_bfd, (bfd_vma) STW_RP, loc + 24);
808 bfd_put_32 (stub_bfd, (bfd_vma) BV_R0_R21, loc + 8);
809 val = hppa_field_adjust (sym_value, (bfd_signed_vma) 4, e_rrsel);
810 insn = hppa_rebuild_insn ((int) LDW_R1_DLT, val, 14);
811 bfd_put_32 (stub_bfd, insn, loc + 12);
818 case hppa_stub_export:
819 /* Branches are relative. This is where we are going to. */
820 sym_value = (hsh->target_value
821 + hsh->target_section->output_offset
822 + hsh->target_section->output_section->vma);
824 /* And this is where we are coming from. */
825 sym_value -= (hsh->stub_offset
826 + stub_sec->output_offset
827 + stub_sec->output_section->vma);
829 if (sym_value - 8 + (1 << (17 + 1)) >= (1 << (17 + 2))
830 && (!htab->has_22bit_branch
831 || sym_value - 8 + (1 << (22 + 1)) >= (1 << (22 + 2))))
833 (*_bfd_error_handler)
834 (_("%B(%A+0x%lx): cannot reach %s, recompile with -ffunction-sections"),
835 hsh->target_section->owner,
837 (long) hsh->stub_offset,
838 hsh->bh_root.string);
839 bfd_set_error (bfd_error_bad_value);
843 val = hppa_field_adjust (sym_value, (bfd_signed_vma) -8, e_fsel) >> 2;
844 if (!htab->has_22bit_branch)
845 insn = hppa_rebuild_insn ((int) BL_RP, val, 17);
847 insn = hppa_rebuild_insn ((int) BL22_RP, val, 22);
848 bfd_put_32 (stub_bfd, insn, loc);
850 bfd_put_32 (stub_bfd, (bfd_vma) NOP, loc + 4);
851 bfd_put_32 (stub_bfd, (bfd_vma) LDW_RP, loc + 8);
852 bfd_put_32 (stub_bfd, (bfd_vma) LDSID_RP_R1, loc + 12);
853 bfd_put_32 (stub_bfd, (bfd_vma) MTSP_R1, loc + 16);
854 bfd_put_32 (stub_bfd, (bfd_vma) BE_SR0_RP, loc + 20);
856 /* Point the function symbol at the stub. */
857 hsh->hh->eh.root.u.def.section = stub_sec;
858 hsh->hh->eh.root.u.def.value = stub_sec->size;
868 stub_sec->size += size;
893 /* As above, but don't actually build the stub. Just bump offset so
894 we know stub section sizes. */
897 hppa_size_one_stub (struct bfd_hash_entry *bh, void *in_arg)
899 struct elf32_hppa_stub_hash_entry *hsh;
900 struct elf32_hppa_link_hash_table *htab;
903 /* Massage our args to the form they really have. */
904 hsh = hppa_stub_hash_entry (bh);
907 if (hsh->stub_type == hppa_stub_long_branch)
909 else if (hsh->stub_type == hppa_stub_long_branch_shared)
911 else if (hsh->stub_type == hppa_stub_export)
913 else /* hppa_stub_import or hppa_stub_import_shared. */
915 if (htab->multi_subspace)
921 hsh->stub_sec->size += size;
925 /* Return nonzero if ABFD represents an HPPA ELF32 file.
926 Additionally we set the default architecture and machine. */
929 elf32_hppa_object_p (bfd *abfd)
931 Elf_Internal_Ehdr * i_ehdrp;
934 i_ehdrp = elf_elfheader (abfd);
935 if (strcmp (bfd_get_target (abfd), "elf32-hppa-linux") == 0)
937 /* GCC on hppa-linux produces binaries with OSABI=GNU,
938 but the kernel produces corefiles with OSABI=SysV. */
939 if (i_ehdrp->e_ident[EI_OSABI] != ELFOSABI_GNU &&
940 i_ehdrp->e_ident[EI_OSABI] != ELFOSABI_NONE) /* aka SYSV */
943 else if (strcmp (bfd_get_target (abfd), "elf32-hppa-netbsd") == 0)
945 /* GCC on hppa-netbsd produces binaries with OSABI=NetBSD,
946 but the kernel produces corefiles with OSABI=SysV. */
947 if (i_ehdrp->e_ident[EI_OSABI] != ELFOSABI_NETBSD &&
948 i_ehdrp->e_ident[EI_OSABI] != ELFOSABI_NONE) /* aka SYSV */
953 if (i_ehdrp->e_ident[EI_OSABI] != ELFOSABI_HPUX)
957 flags = i_ehdrp->e_flags;
958 switch (flags & (EF_PARISC_ARCH | EF_PARISC_WIDE))
961 return bfd_default_set_arch_mach (abfd, bfd_arch_hppa, 10);
963 return bfd_default_set_arch_mach (abfd, bfd_arch_hppa, 11);
965 return bfd_default_set_arch_mach (abfd, bfd_arch_hppa, 20);
966 case EFA_PARISC_2_0 | EF_PARISC_WIDE:
967 return bfd_default_set_arch_mach (abfd, bfd_arch_hppa, 25);
972 /* Create the .plt and .got sections, and set up our hash table
973 short-cuts to various dynamic sections. */
976 elf32_hppa_create_dynamic_sections (bfd *abfd, struct bfd_link_info *info)
978 struct elf32_hppa_link_hash_table *htab;
979 struct elf_link_hash_entry *eh;
981 /* Don't try to create the .plt and .got twice. */
982 htab = hppa_link_hash_table (info);
985 if (htab->splt != NULL)
988 /* Call the generic code to do most of the work. */
989 if (! _bfd_elf_create_dynamic_sections (abfd, info))
992 htab->splt = bfd_get_linker_section (abfd, ".plt");
993 htab->srelplt = bfd_get_linker_section (abfd, ".rela.plt");
995 htab->sgot = bfd_get_linker_section (abfd, ".got");
996 htab->srelgot = bfd_get_linker_section (abfd, ".rela.got");
998 htab->sdynbss = bfd_get_linker_section (abfd, ".dynbss");
999 htab->srelbss = bfd_get_linker_section (abfd, ".rela.bss");
1001 /* hppa-linux needs _GLOBAL_OFFSET_TABLE_ to be visible from the main
1002 application, because __canonicalize_funcptr_for_compare needs it. */
1003 eh = elf_hash_table (info)->hgot;
1004 eh->forced_local = 0;
1005 eh->other = STV_DEFAULT;
1006 return bfd_elf_link_record_dynamic_symbol (info, eh);
1009 /* Copy the extra info we tack onto an elf_link_hash_entry. */
1012 elf32_hppa_copy_indirect_symbol (struct bfd_link_info *info,
1013 struct elf_link_hash_entry *eh_dir,
1014 struct elf_link_hash_entry *eh_ind)
1016 struct elf32_hppa_link_hash_entry *hh_dir, *hh_ind;
1018 hh_dir = hppa_elf_hash_entry (eh_dir);
1019 hh_ind = hppa_elf_hash_entry (eh_ind);
1021 if (hh_ind->dyn_relocs != NULL)
1023 if (hh_dir->dyn_relocs != NULL)
1025 struct elf32_hppa_dyn_reloc_entry **hdh_pp;
1026 struct elf32_hppa_dyn_reloc_entry *hdh_p;
1028 /* Add reloc counts against the indirect sym to the direct sym
1029 list. Merge any entries against the same section. */
1030 for (hdh_pp = &hh_ind->dyn_relocs; (hdh_p = *hdh_pp) != NULL; )
1032 struct elf32_hppa_dyn_reloc_entry *hdh_q;
1034 for (hdh_q = hh_dir->dyn_relocs;
1036 hdh_q = hdh_q->hdh_next)
1037 if (hdh_q->sec == hdh_p->sec)
1039 #if RELATIVE_DYNRELOCS
1040 hdh_q->relative_count += hdh_p->relative_count;
1042 hdh_q->count += hdh_p->count;
1043 *hdh_pp = hdh_p->hdh_next;
1047 hdh_pp = &hdh_p->hdh_next;
1049 *hdh_pp = hh_dir->dyn_relocs;
1052 hh_dir->dyn_relocs = hh_ind->dyn_relocs;
1053 hh_ind->dyn_relocs = NULL;
1056 if (ELIMINATE_COPY_RELOCS
1057 && eh_ind->root.type != bfd_link_hash_indirect
1058 && eh_dir->dynamic_adjusted)
1060 /* If called to transfer flags for a weakdef during processing
1061 of elf_adjust_dynamic_symbol, don't copy non_got_ref.
1062 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
1063 eh_dir->ref_dynamic |= eh_ind->ref_dynamic;
1064 eh_dir->ref_regular |= eh_ind->ref_regular;
1065 eh_dir->ref_regular_nonweak |= eh_ind->ref_regular_nonweak;
1066 eh_dir->needs_plt |= eh_ind->needs_plt;
1070 if (eh_ind->root.type == bfd_link_hash_indirect
1071 && eh_dir->got.refcount <= 0)
1073 hh_dir->tls_type = hh_ind->tls_type;
1074 hh_ind->tls_type = GOT_UNKNOWN;
1077 _bfd_elf_link_hash_copy_indirect (info, eh_dir, eh_ind);
1082 elf32_hppa_optimized_tls_reloc (struct bfd_link_info *info ATTRIBUTE_UNUSED,
1083 int r_type, int is_local ATTRIBUTE_UNUSED)
1085 /* For now we don't support linker optimizations. */
1089 /* Return a pointer to the local GOT, PLT and TLS reference counts
1090 for ABFD. Returns NULL if the storage allocation fails. */
1092 static bfd_signed_vma *
1093 hppa32_elf_local_refcounts (bfd *abfd)
1095 Elf_Internal_Shdr *symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
1096 bfd_signed_vma *local_refcounts;
1098 local_refcounts = elf_local_got_refcounts (abfd);
1099 if (local_refcounts == NULL)
1103 /* Allocate space for local GOT and PLT reference
1104 counts. Done this way to save polluting elf_obj_tdata
1105 with another target specific pointer. */
1106 size = symtab_hdr->sh_info;
1107 size *= 2 * sizeof (bfd_signed_vma);
1108 /* Add in space to store the local GOT TLS types. */
1109 size += symtab_hdr->sh_info;
1110 local_refcounts = bfd_zalloc (abfd, size);
1111 if (local_refcounts == NULL)
1113 elf_local_got_refcounts (abfd) = local_refcounts;
1114 memset (hppa_elf_local_got_tls_type (abfd), GOT_UNKNOWN,
1115 symtab_hdr->sh_info);
1117 return local_refcounts;
1121 /* Look through the relocs for a section during the first phase, and
1122 calculate needed space in the global offset table, procedure linkage
1123 table, and dynamic reloc sections. At this point we haven't
1124 necessarily read all the input files. */
1127 elf32_hppa_check_relocs (bfd *abfd,
1128 struct bfd_link_info *info,
1130 const Elf_Internal_Rela *relocs)
1132 Elf_Internal_Shdr *symtab_hdr;
1133 struct elf_link_hash_entry **eh_syms;
1134 const Elf_Internal_Rela *rela;
1135 const Elf_Internal_Rela *rela_end;
1136 struct elf32_hppa_link_hash_table *htab;
1138 int tls_type = GOT_UNKNOWN, old_tls_type = GOT_UNKNOWN;
1140 if (bfd_link_relocatable (info))
1143 htab = hppa_link_hash_table (info);
1146 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
1147 eh_syms = elf_sym_hashes (abfd);
1150 rela_end = relocs + sec->reloc_count;
1151 for (rela = relocs; rela < rela_end; rela++)
1160 unsigned int r_symndx, r_type;
1161 struct elf32_hppa_link_hash_entry *hh;
1164 r_symndx = ELF32_R_SYM (rela->r_info);
1166 if (r_symndx < symtab_hdr->sh_info)
1170 hh = hppa_elf_hash_entry (eh_syms[r_symndx - symtab_hdr->sh_info]);
1171 while (hh->eh.root.type == bfd_link_hash_indirect
1172 || hh->eh.root.type == bfd_link_hash_warning)
1173 hh = hppa_elf_hash_entry (hh->eh.root.u.i.link);
1175 /* PR15323, ref flags aren't set for references in the same
1177 hh->eh.root.non_ir_ref = 1;
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 | NEED_DYNREL;
1219 case R_PARISC_PCREL12F:
1220 htab->has_12bit_branch = 1;
1223 case R_PARISC_PCREL17C:
1224 case R_PARISC_PCREL17F:
1225 htab->has_17bit_branch = 1;
1228 case R_PARISC_PCREL22F:
1229 htab->has_22bit_branch = 1;
1231 /* Function calls might need to go through the .plt, and
1232 might require long branch stubs. */
1235 /* We know local syms won't need a .plt entry, and if
1236 they need a long branch stub we can't guarantee that
1237 we can reach the stub. So just flag an error later
1238 if we're doing a shared link and find we need a long
1244 /* Global symbols will need a .plt entry if they remain
1245 global, and in most cases won't need a long branch
1246 stub. Unfortunately, we have to cater for the case
1247 where a symbol is forced local by versioning, or due
1248 to symbolic linking, and we lose the .plt entry. */
1249 need_entry = NEED_PLT;
1250 if (hh->eh.type == STT_PARISC_MILLI)
1255 case R_PARISC_SEGBASE: /* Used to set segment base. */
1256 case R_PARISC_SEGREL32: /* Relative reloc, used for unwind. */
1257 case R_PARISC_PCREL14F: /* PC relative load/store. */
1258 case R_PARISC_PCREL14R:
1259 case R_PARISC_PCREL17R: /* External branches. */
1260 case R_PARISC_PCREL21L: /* As above, and for load/store too. */
1261 case R_PARISC_PCREL32:
1262 /* We don't need to propagate the relocation if linking a
1263 shared object since these are section relative. */
1266 case R_PARISC_DPREL14F: /* Used for gp rel data load/store. */
1267 case R_PARISC_DPREL14R:
1268 case R_PARISC_DPREL21L:
1269 if (bfd_link_pic (info))
1271 (*_bfd_error_handler)
1272 (_("%B: relocation %s can not be used when making a shared object; recompile with -fPIC"),
1274 elf_hppa_howto_table[r_type].name);
1275 bfd_set_error (bfd_error_bad_value);
1280 case R_PARISC_DIR17F: /* Used for external branches. */
1281 case R_PARISC_DIR17R:
1282 case R_PARISC_DIR14F: /* Used for load/store from absolute locn. */
1283 case R_PARISC_DIR14R:
1284 case R_PARISC_DIR21L: /* As above, and for ext branches too. */
1285 case R_PARISC_DIR32: /* .word relocs. */
1286 /* We may want to output a dynamic relocation later. */
1287 need_entry = NEED_DYNREL;
1290 /* This relocation describes the C++ object vtable hierarchy.
1291 Reconstruct it for later use during GC. */
1292 case R_PARISC_GNU_VTINHERIT:
1293 if (!bfd_elf_gc_record_vtinherit (abfd, sec, &hh->eh, rela->r_offset))
1297 /* This relocation describes which C++ vtable entries are actually
1298 used. Record for later use during GC. */
1299 case R_PARISC_GNU_VTENTRY:
1300 BFD_ASSERT (hh != NULL);
1302 && !bfd_elf_gc_record_vtentry (abfd, sec, &hh->eh, rela->r_addend))
1306 case R_PARISC_TLS_GD21L:
1307 case R_PARISC_TLS_GD14R:
1308 case R_PARISC_TLS_LDM21L:
1309 case R_PARISC_TLS_LDM14R:
1310 need_entry = NEED_GOT;
1313 case R_PARISC_TLS_IE21L:
1314 case R_PARISC_TLS_IE14R:
1315 if (bfd_link_pic (info))
1316 info->flags |= DF_STATIC_TLS;
1317 need_entry = NEED_GOT;
1324 /* Now carry out our orders. */
1325 if (need_entry & NEED_GOT)
1330 tls_type = GOT_NORMAL;
1332 case R_PARISC_TLS_GD21L:
1333 case R_PARISC_TLS_GD14R:
1334 tls_type |= GOT_TLS_GD;
1336 case R_PARISC_TLS_LDM21L:
1337 case R_PARISC_TLS_LDM14R:
1338 tls_type |= GOT_TLS_LDM;
1340 case R_PARISC_TLS_IE21L:
1341 case R_PARISC_TLS_IE14R:
1342 tls_type |= GOT_TLS_IE;
1346 /* Allocate space for a GOT entry, as well as a dynamic
1347 relocation for this entry. */
1348 if (htab->sgot == NULL)
1350 if (htab->etab.dynobj == NULL)
1351 htab->etab.dynobj = abfd;
1352 if (!elf32_hppa_create_dynamic_sections (htab->etab.dynobj, info))
1356 if (r_type == R_PARISC_TLS_LDM21L
1357 || r_type == R_PARISC_TLS_LDM14R)
1358 htab->tls_ldm_got.refcount += 1;
1363 hh->eh.got.refcount += 1;
1364 old_tls_type = hh->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 local_got_refcounts[r_symndx] += 1;
1376 old_tls_type = hppa_elf_local_got_tls_type (abfd) [r_symndx];
1379 tls_type |= old_tls_type;
1381 if (old_tls_type != tls_type)
1384 hh->tls_type = tls_type;
1386 hppa_elf_local_got_tls_type (abfd) [r_symndx] = tls_type;
1392 if (need_entry & NEED_PLT)
1394 /* If we are creating a shared library, and this is a reloc
1395 against a weak symbol or a global symbol in a dynamic
1396 object, then we will be creating an import stub and a
1397 .plt entry for the symbol. Similarly, on a normal link
1398 to symbols defined in a dynamic object we'll need the
1399 import stub and a .plt entry. We don't know yet whether
1400 the symbol is defined or not, so make an entry anyway and
1401 clean up later in adjust_dynamic_symbol. */
1402 if ((sec->flags & SEC_ALLOC) != 0)
1406 hh->eh.needs_plt = 1;
1407 hh->eh.plt.refcount += 1;
1409 /* If this .plt entry is for a plabel, mark it so
1410 that adjust_dynamic_symbol will keep the entry
1411 even if it appears to be local. */
1412 if (need_entry & PLT_PLABEL)
1415 else if (need_entry & PLT_PLABEL)
1417 bfd_signed_vma *local_got_refcounts;
1418 bfd_signed_vma *local_plt_refcounts;
1420 local_got_refcounts = hppa32_elf_local_refcounts (abfd);
1421 if (local_got_refcounts == NULL)
1423 local_plt_refcounts = (local_got_refcounts
1424 + symtab_hdr->sh_info);
1425 local_plt_refcounts[r_symndx] += 1;
1430 if (need_entry & NEED_DYNREL)
1432 /* Flag this symbol as having a non-got, non-plt reference
1433 so that we generate copy relocs if it turns out to be
1435 if (hh != NULL && !bfd_link_pic (info))
1436 hh->eh.non_got_ref = 1;
1438 /* If we are creating a shared library then we need to copy
1439 the reloc into the shared library. However, if we are
1440 linking with -Bsymbolic, we need only copy absolute
1441 relocs or relocs against symbols that are not defined in
1442 an object we are including in the link. PC- or DP- or
1443 DLT-relative relocs against any local sym or global sym
1444 with DEF_REGULAR set, can be discarded. At this point we
1445 have not seen all the input files, so it is possible that
1446 DEF_REGULAR is not set now but will be set later (it is
1447 never cleared). We account for that possibility below by
1448 storing information in the dyn_relocs field of the
1451 A similar situation to the -Bsymbolic case occurs when
1452 creating shared libraries and symbol visibility changes
1453 render the symbol local.
1455 As it turns out, all the relocs we will be creating here
1456 are absolute, so we cannot remove them on -Bsymbolic
1457 links or visibility changes anyway. A STUB_REL reloc
1458 is absolute too, as in that case it is the reloc in the
1459 stub we will be creating, rather than copying the PCREL
1460 reloc in the branch.
1462 If on the other hand, we are creating an executable, we
1463 may need to keep relocations for symbols satisfied by a
1464 dynamic library if we manage to avoid copy relocs for the
1466 if ((bfd_link_pic (info)
1467 && (sec->flags & SEC_ALLOC) != 0
1468 && (IS_ABSOLUTE_RELOC (r_type)
1470 && (!SYMBOLIC_BIND (info, &hh->eh)
1471 || hh->eh.root.type == bfd_link_hash_defweak
1472 || !hh->eh.def_regular))))
1473 || (ELIMINATE_COPY_RELOCS
1474 && !bfd_link_pic (info)
1475 && (sec->flags & SEC_ALLOC) != 0
1477 && (hh->eh.root.type == bfd_link_hash_defweak
1478 || !hh->eh.def_regular)))
1480 struct elf32_hppa_dyn_reloc_entry *hdh_p;
1481 struct elf32_hppa_dyn_reloc_entry **hdh_head;
1483 /* Create a reloc section in dynobj and make room for
1487 if (htab->etab.dynobj == NULL)
1488 htab->etab.dynobj = abfd;
1490 sreloc = _bfd_elf_make_dynamic_reloc_section
1491 (sec, htab->etab.dynobj, 2, abfd, /*rela?*/ TRUE);
1495 bfd_set_error (bfd_error_bad_value);
1500 /* If this is a global symbol, we count the number of
1501 relocations we need for this symbol. */
1504 hdh_head = &hh->dyn_relocs;
1508 /* Track dynamic relocs needed for local syms too.
1509 We really need local syms available to do this
1513 Elf_Internal_Sym *isym;
1515 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
1520 sr = bfd_section_from_elf_index (abfd, isym->st_shndx);
1524 vpp = &elf_section_data (sr)->local_dynrel;
1525 hdh_head = (struct elf32_hppa_dyn_reloc_entry **) vpp;
1529 if (hdh_p == NULL || hdh_p->sec != sec)
1531 hdh_p = bfd_alloc (htab->etab.dynobj, sizeof *hdh_p);
1534 hdh_p->hdh_next = *hdh_head;
1538 #if RELATIVE_DYNRELOCS
1539 hdh_p->relative_count = 0;
1544 #if RELATIVE_DYNRELOCS
1545 if (!IS_ABSOLUTE_RELOC (rtype))
1546 hdh_p->relative_count += 1;
1555 /* Return the section that should be marked against garbage collection
1556 for a given relocation. */
1559 elf32_hppa_gc_mark_hook (asection *sec,
1560 struct bfd_link_info *info,
1561 Elf_Internal_Rela *rela,
1562 struct elf_link_hash_entry *hh,
1563 Elf_Internal_Sym *sym)
1566 switch ((unsigned int) ELF32_R_TYPE (rela->r_info))
1568 case R_PARISC_GNU_VTINHERIT:
1569 case R_PARISC_GNU_VTENTRY:
1573 return _bfd_elf_gc_mark_hook (sec, info, rela, hh, sym);
1576 /* Update the got and plt entry reference counts for the section being
1580 elf32_hppa_gc_sweep_hook (bfd *abfd,
1581 struct bfd_link_info *info ATTRIBUTE_UNUSED,
1583 const Elf_Internal_Rela *relocs)
1585 Elf_Internal_Shdr *symtab_hdr;
1586 struct elf_link_hash_entry **eh_syms;
1587 bfd_signed_vma *local_got_refcounts;
1588 bfd_signed_vma *local_plt_refcounts;
1589 const Elf_Internal_Rela *rela, *relend;
1590 struct elf32_hppa_link_hash_table *htab;
1592 if (bfd_link_relocatable (info))
1595 htab = hppa_link_hash_table (info);
1599 elf_section_data (sec)->local_dynrel = NULL;
1601 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
1602 eh_syms = elf_sym_hashes (abfd);
1603 local_got_refcounts = elf_local_got_refcounts (abfd);
1604 local_plt_refcounts = local_got_refcounts;
1605 if (local_plt_refcounts != NULL)
1606 local_plt_refcounts += symtab_hdr->sh_info;
1608 relend = relocs + sec->reloc_count;
1609 for (rela = relocs; rela < relend; rela++)
1611 unsigned long r_symndx;
1612 unsigned int r_type;
1613 struct elf_link_hash_entry *eh = NULL;
1615 r_symndx = ELF32_R_SYM (rela->r_info);
1616 if (r_symndx >= symtab_hdr->sh_info)
1618 struct elf32_hppa_link_hash_entry *hh;
1619 struct elf32_hppa_dyn_reloc_entry **hdh_pp;
1620 struct elf32_hppa_dyn_reloc_entry *hdh_p;
1622 eh = eh_syms[r_symndx - symtab_hdr->sh_info];
1623 while (eh->root.type == bfd_link_hash_indirect
1624 || eh->root.type == bfd_link_hash_warning)
1625 eh = (struct elf_link_hash_entry *) eh->root.u.i.link;
1626 hh = hppa_elf_hash_entry (eh);
1628 for (hdh_pp = &hh->dyn_relocs; (hdh_p = *hdh_pp) != NULL; hdh_pp = &hdh_p->hdh_next)
1629 if (hdh_p->sec == sec)
1631 /* Everything must go for SEC. */
1632 *hdh_pp = hdh_p->hdh_next;
1637 r_type = ELF32_R_TYPE (rela->r_info);
1638 r_type = elf32_hppa_optimized_tls_reloc (info, r_type, eh != NULL);
1642 case R_PARISC_DLTIND14F:
1643 case R_PARISC_DLTIND14R:
1644 case R_PARISC_DLTIND21L:
1645 case R_PARISC_TLS_GD21L:
1646 case R_PARISC_TLS_GD14R:
1647 case R_PARISC_TLS_IE21L:
1648 case R_PARISC_TLS_IE14R:
1651 if (eh->got.refcount > 0)
1652 eh->got.refcount -= 1;
1654 else if (local_got_refcounts != NULL)
1656 if (local_got_refcounts[r_symndx] > 0)
1657 local_got_refcounts[r_symndx] -= 1;
1661 case R_PARISC_TLS_LDM21L:
1662 case R_PARISC_TLS_LDM14R:
1663 htab->tls_ldm_got.refcount -= 1;
1666 case R_PARISC_PCREL12F:
1667 case R_PARISC_PCREL17C:
1668 case R_PARISC_PCREL17F:
1669 case R_PARISC_PCREL22F:
1672 if (eh->plt.refcount > 0)
1673 eh->plt.refcount -= 1;
1677 case R_PARISC_PLABEL14R:
1678 case R_PARISC_PLABEL21L:
1679 case R_PARISC_PLABEL32:
1682 if (eh->plt.refcount > 0)
1683 eh->plt.refcount -= 1;
1685 else if (local_plt_refcounts != NULL)
1687 if (local_plt_refcounts[r_symndx] > 0)
1688 local_plt_refcounts[r_symndx] -= 1;
1700 /* Support for core dump NOTE sections. */
1703 elf32_hppa_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
1708 switch (note->descsz)
1713 case 396: /* Linux/hppa */
1715 elf_tdata (abfd)->core->signal = bfd_get_16 (abfd, note->descdata + 12);
1718 elf_tdata (abfd)->core->lwpid = bfd_get_32 (abfd, note->descdata + 24);
1727 /* Make a ".reg/999" section. */
1728 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
1729 size, note->descpos + offset);
1733 elf32_hppa_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
1735 switch (note->descsz)
1740 case 124: /* Linux/hppa elf_prpsinfo. */
1741 elf_tdata (abfd)->core->program
1742 = _bfd_elfcore_strndup (abfd, note->descdata + 28, 16);
1743 elf_tdata (abfd)->core->command
1744 = _bfd_elfcore_strndup (abfd, note->descdata + 44, 80);
1747 /* Note that for some reason, a spurious space is tacked
1748 onto the end of the args in some (at least one anyway)
1749 implementations, so strip it off if it exists. */
1751 char *command = elf_tdata (abfd)->core->command;
1752 int n = strlen (command);
1754 if (0 < n && command[n - 1] == ' ')
1755 command[n - 1] = '\0';
1761 /* Our own version of hide_symbol, so that we can keep plt entries for
1765 elf32_hppa_hide_symbol (struct bfd_link_info *info,
1766 struct elf_link_hash_entry *eh,
1767 bfd_boolean force_local)
1771 eh->forced_local = 1;
1772 if (eh->dynindx != -1)
1775 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
1779 /* PR 16082: Remove version information from hidden symbol. */
1780 eh->verinfo.verdef = NULL;
1781 eh->verinfo.vertree = NULL;
1784 /* STT_GNU_IFUNC symbol must go through PLT. */
1785 if (! hppa_elf_hash_entry (eh)->plabel
1786 && eh->type != STT_GNU_IFUNC)
1789 eh->plt = elf_hash_table (info)->init_plt_offset;
1793 /* Adjust a symbol defined by a dynamic object and referenced by a
1794 regular object. The current definition is in some section of the
1795 dynamic object, but we're not including those sections. We have to
1796 change the definition to something the rest of the link can
1800 elf32_hppa_adjust_dynamic_symbol (struct bfd_link_info *info,
1801 struct elf_link_hash_entry *eh)
1803 struct elf32_hppa_link_hash_table *htab;
1806 /* If this is a function, put it in the procedure linkage table. We
1807 will fill in the contents of the procedure linkage table later. */
1808 if (eh->type == STT_FUNC
1811 /* If the symbol is used by a plabel, we must allocate a PLT slot.
1812 The refcounts are not reliable when it has been hidden since
1813 hide_symbol can be called before the plabel flag is set. */
1814 if (hppa_elf_hash_entry (eh)->plabel
1815 && eh->plt.refcount <= 0)
1816 eh->plt.refcount = 1;
1818 if (eh->plt.refcount <= 0
1820 && eh->root.type != bfd_link_hash_defweak
1821 && ! hppa_elf_hash_entry (eh)->plabel
1822 && (!bfd_link_pic (info) || SYMBOLIC_BIND (info, eh))))
1824 /* The .plt entry is not needed when:
1825 a) Garbage collection has removed all references to the
1827 b) We know for certain the symbol is defined in this
1828 object, and it's not a weak definition, nor is the symbol
1829 used by a plabel relocation. Either this object is the
1830 application or we are doing a shared symbolic link. */
1832 eh->plt.offset = (bfd_vma) -1;
1839 eh->plt.offset = (bfd_vma) -1;
1841 /* If this is a weak symbol, and there is a real definition, the
1842 processor independent code will have arranged for us to see the
1843 real definition first, and we can just use the same value. */
1844 if (eh->u.weakdef != NULL)
1846 if (eh->u.weakdef->root.type != bfd_link_hash_defined
1847 && eh->u.weakdef->root.type != bfd_link_hash_defweak)
1849 eh->root.u.def.section = eh->u.weakdef->root.u.def.section;
1850 eh->root.u.def.value = eh->u.weakdef->root.u.def.value;
1851 if (ELIMINATE_COPY_RELOCS)
1852 eh->non_got_ref = eh->u.weakdef->non_got_ref;
1856 /* This is a reference to a symbol defined by a dynamic object which
1857 is not a function. */
1859 /* If we are creating a shared library, we must presume that the
1860 only references to the symbol are via the global offset table.
1861 For such cases we need not do anything here; the relocations will
1862 be handled correctly by relocate_section. */
1863 if (bfd_link_pic (info))
1866 /* If there are no references to this symbol that do not use the
1867 GOT, we don't need to generate a copy reloc. */
1868 if (!eh->non_got_ref)
1871 if (ELIMINATE_COPY_RELOCS)
1873 struct elf32_hppa_link_hash_entry *hh;
1874 struct elf32_hppa_dyn_reloc_entry *hdh_p;
1876 hh = hppa_elf_hash_entry (eh);
1877 for (hdh_p = hh->dyn_relocs; hdh_p != NULL; hdh_p = hdh_p->hdh_next)
1879 sec = hdh_p->sec->output_section;
1880 if (sec != NULL && (sec->flags & SEC_READONLY) != 0)
1884 /* If we didn't find any dynamic relocs in read-only sections, then
1885 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
1888 eh->non_got_ref = 0;
1893 /* We must allocate the symbol in our .dynbss section, which will
1894 become part of the .bss section of the executable. There will be
1895 an entry for this symbol in the .dynsym section. The dynamic
1896 object will contain position independent code, so all references
1897 from the dynamic object to this symbol will go through the global
1898 offset table. The dynamic linker will use the .dynsym entry to
1899 determine the address it must put in the global offset table, so
1900 both the dynamic object and the regular object will refer to the
1901 same memory location for the variable. */
1903 htab = hppa_link_hash_table (info);
1907 /* We must generate a COPY reloc to tell the dynamic linker to
1908 copy the initial value out of the dynamic object and into the
1909 runtime process image. */
1910 if ((eh->root.u.def.section->flags & SEC_ALLOC) != 0 && eh->size != 0)
1912 htab->srelbss->size += sizeof (Elf32_External_Rela);
1916 sec = htab->sdynbss;
1918 return _bfd_elf_adjust_dynamic_copy (info, eh, sec);
1921 /* Allocate space in the .plt for entries that won't have relocations.
1922 ie. plabel entries. */
1925 allocate_plt_static (struct elf_link_hash_entry *eh, void *inf)
1927 struct bfd_link_info *info;
1928 struct elf32_hppa_link_hash_table *htab;
1929 struct elf32_hppa_link_hash_entry *hh;
1932 if (eh->root.type == bfd_link_hash_indirect)
1935 info = (struct bfd_link_info *) inf;
1936 hh = hppa_elf_hash_entry (eh);
1937 htab = hppa_link_hash_table (info);
1941 if (htab->etab.dynamic_sections_created
1942 && eh->plt.refcount > 0)
1944 /* Make sure this symbol is output as a dynamic symbol.
1945 Undefined weak syms won't yet be marked as dynamic. */
1946 if (eh->dynindx == -1
1947 && !eh->forced_local
1948 && eh->type != STT_PARISC_MILLI)
1950 if (! bfd_elf_link_record_dynamic_symbol (info, eh))
1954 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, bfd_link_pic (info), eh))
1956 /* Allocate these later. From this point on, h->plabel
1957 means that the plt entry is only used by a plabel.
1958 We'll be using a normal plt entry for this symbol, so
1959 clear the plabel indicator. */
1963 else if (hh->plabel)
1965 /* Make an entry in the .plt section for plabel references
1966 that won't have a .plt entry for other reasons. */
1968 eh->plt.offset = sec->size;
1969 sec->size += PLT_ENTRY_SIZE;
1973 /* No .plt entry needed. */
1974 eh->plt.offset = (bfd_vma) -1;
1980 eh->plt.offset = (bfd_vma) -1;
1987 /* Allocate space in .plt, .got and associated reloc sections for
1991 allocate_dynrelocs (struct elf_link_hash_entry *eh, void *inf)
1993 struct bfd_link_info *info;
1994 struct elf32_hppa_link_hash_table *htab;
1996 struct elf32_hppa_link_hash_entry *hh;
1997 struct elf32_hppa_dyn_reloc_entry *hdh_p;
1999 if (eh->root.type == bfd_link_hash_indirect)
2003 htab = hppa_link_hash_table (info);
2007 hh = hppa_elf_hash_entry (eh);
2009 if (htab->etab.dynamic_sections_created
2010 && eh->plt.offset != (bfd_vma) -1
2012 && eh->plt.refcount > 0)
2014 /* Make an entry in the .plt section. */
2016 eh->plt.offset = sec->size;
2017 sec->size += PLT_ENTRY_SIZE;
2019 /* We also need to make an entry in the .rela.plt section. */
2020 htab->srelplt->size += sizeof (Elf32_External_Rela);
2021 htab->need_plt_stub = 1;
2024 if (eh->got.refcount > 0)
2026 /* Make sure this symbol is output as a dynamic symbol.
2027 Undefined weak syms won't yet be marked as dynamic. */
2028 if (eh->dynindx == -1
2029 && !eh->forced_local
2030 && eh->type != STT_PARISC_MILLI)
2032 if (! bfd_elf_link_record_dynamic_symbol (info, eh))
2037 eh->got.offset = sec->size;
2038 sec->size += GOT_ENTRY_SIZE;
2039 /* R_PARISC_TLS_GD* needs two GOT entries */
2040 if ((hh->tls_type & (GOT_TLS_GD | GOT_TLS_IE)) == (GOT_TLS_GD | GOT_TLS_IE))
2041 sec->size += GOT_ENTRY_SIZE * 2;
2042 else if ((hh->tls_type & GOT_TLS_GD) == GOT_TLS_GD)
2043 sec->size += GOT_ENTRY_SIZE;
2044 if (htab->etab.dynamic_sections_created
2045 && (bfd_link_pic (info)
2046 || (eh->dynindx != -1
2047 && !eh->forced_local)))
2049 htab->srelgot->size += sizeof (Elf32_External_Rela);
2050 if ((hh->tls_type & (GOT_TLS_GD | GOT_TLS_IE)) == (GOT_TLS_GD | GOT_TLS_IE))
2051 htab->srelgot->size += 2 * sizeof (Elf32_External_Rela);
2052 else if ((hh->tls_type & GOT_TLS_GD) == GOT_TLS_GD)
2053 htab->srelgot->size += sizeof (Elf32_External_Rela);
2057 eh->got.offset = (bfd_vma) -1;
2059 if (hh->dyn_relocs == NULL)
2062 /* If this is a -Bsymbolic shared link, then we need to discard all
2063 space allocated for dynamic pc-relative relocs against symbols
2064 defined in a regular object. For the normal shared case, discard
2065 space for relocs that have become local due to symbol visibility
2067 if (bfd_link_pic (info))
2069 #if RELATIVE_DYNRELOCS
2070 if (SYMBOL_CALLS_LOCAL (info, eh))
2072 struct elf32_hppa_dyn_reloc_entry **hdh_pp;
2074 for (hdh_pp = &hh->dyn_relocs; (hdh_p = *hdh_pp) != NULL; )
2076 hdh_p->count -= hdh_p->relative_count;
2077 hdh_p->relative_count = 0;
2078 if (hdh_p->count == 0)
2079 *hdh_pp = hdh_p->hdh_next;
2081 hdh_pp = &hdh_p->hdh_next;
2086 /* Also discard relocs on undefined weak syms with non-default
2088 if (hh->dyn_relocs != NULL
2089 && eh->root.type == bfd_link_hash_undefweak)
2091 if (ELF_ST_VISIBILITY (eh->other) != STV_DEFAULT)
2092 hh->dyn_relocs = NULL;
2094 /* Make sure undefined weak symbols are output as a dynamic
2096 else if (eh->dynindx == -1
2097 && !eh->forced_local)
2099 if (! bfd_elf_link_record_dynamic_symbol (info, eh))
2106 /* For the non-shared case, discard space for relocs against
2107 symbols which turn out to need copy relocs or are not
2110 if (!eh->non_got_ref
2111 && ((ELIMINATE_COPY_RELOCS
2113 && !eh->def_regular)
2114 || (htab->etab.dynamic_sections_created
2115 && (eh->root.type == bfd_link_hash_undefweak
2116 || eh->root.type == bfd_link_hash_undefined))))
2118 /* Make sure this symbol is output as a dynamic symbol.
2119 Undefined weak syms won't yet be marked as dynamic. */
2120 if (eh->dynindx == -1
2121 && !eh->forced_local
2122 && eh->type != STT_PARISC_MILLI)
2124 if (! bfd_elf_link_record_dynamic_symbol (info, eh))
2128 /* If that succeeded, we know we'll be keeping all the
2130 if (eh->dynindx != -1)
2134 hh->dyn_relocs = NULL;
2140 /* Finally, allocate space. */
2141 for (hdh_p = hh->dyn_relocs; hdh_p != NULL; hdh_p = hdh_p->hdh_next)
2143 asection *sreloc = elf_section_data (hdh_p->sec)->sreloc;
2144 sreloc->size += hdh_p->count * sizeof (Elf32_External_Rela);
2150 /* This function is called via elf_link_hash_traverse to force
2151 millicode symbols local so they do not end up as globals in the
2152 dynamic symbol table. We ought to be able to do this in
2153 adjust_dynamic_symbol, but our adjust_dynamic_symbol is not called
2154 for all dynamic symbols. Arguably, this is a bug in
2155 elf_adjust_dynamic_symbol. */
2158 clobber_millicode_symbols (struct elf_link_hash_entry *eh,
2159 struct bfd_link_info *info)
2161 if (eh->type == STT_PARISC_MILLI
2162 && !eh->forced_local)
2164 elf32_hppa_hide_symbol (info, eh, TRUE);
2169 /* Find any dynamic relocs that apply to read-only sections. */
2172 readonly_dynrelocs (struct elf_link_hash_entry *eh, void *inf)
2174 struct elf32_hppa_link_hash_entry *hh;
2175 struct elf32_hppa_dyn_reloc_entry *hdh_p;
2177 hh = hppa_elf_hash_entry (eh);
2178 for (hdh_p = hh->dyn_relocs; hdh_p != NULL; hdh_p = hdh_p->hdh_next)
2180 asection *sec = hdh_p->sec->output_section;
2182 if (sec != NULL && (sec->flags & SEC_READONLY) != 0)
2184 struct bfd_link_info *info = inf;
2186 info->flags |= DF_TEXTREL;
2188 /* Not an error, just cut short the traversal. */
2195 /* Set the sizes of the dynamic sections. */
2198 elf32_hppa_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
2199 struct bfd_link_info *info)
2201 struct elf32_hppa_link_hash_table *htab;
2207 htab = hppa_link_hash_table (info);
2211 dynobj = htab->etab.dynobj;
2215 if (htab->etab.dynamic_sections_created)
2217 /* Set the contents of the .interp section to the interpreter. */
2218 if (bfd_link_executable (info) && !info->nointerp)
2220 sec = bfd_get_linker_section (dynobj, ".interp");
2223 sec->size = sizeof ELF_DYNAMIC_INTERPRETER;
2224 sec->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
2227 /* Force millicode symbols local. */
2228 elf_link_hash_traverse (&htab->etab,
2229 clobber_millicode_symbols,
2233 /* Set up .got and .plt offsets for local syms, and space for local
2235 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
2237 bfd_signed_vma *local_got;
2238 bfd_signed_vma *end_local_got;
2239 bfd_signed_vma *local_plt;
2240 bfd_signed_vma *end_local_plt;
2241 bfd_size_type locsymcount;
2242 Elf_Internal_Shdr *symtab_hdr;
2244 char *local_tls_type;
2246 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour)
2249 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
2251 struct elf32_hppa_dyn_reloc_entry *hdh_p;
2253 for (hdh_p = ((struct elf32_hppa_dyn_reloc_entry *)
2254 elf_section_data (sec)->local_dynrel);
2256 hdh_p = hdh_p->hdh_next)
2258 if (!bfd_is_abs_section (hdh_p->sec)
2259 && bfd_is_abs_section (hdh_p->sec->output_section))
2261 /* Input section has been discarded, either because
2262 it is a copy of a linkonce section or due to
2263 linker script /DISCARD/, so we'll be discarding
2266 else if (hdh_p->count != 0)
2268 srel = elf_section_data (hdh_p->sec)->sreloc;
2269 srel->size += hdh_p->count * sizeof (Elf32_External_Rela);
2270 if ((hdh_p->sec->output_section->flags & SEC_READONLY) != 0)
2271 info->flags |= DF_TEXTREL;
2276 local_got = elf_local_got_refcounts (ibfd);
2280 symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
2281 locsymcount = symtab_hdr->sh_info;
2282 end_local_got = local_got + locsymcount;
2283 local_tls_type = hppa_elf_local_got_tls_type (ibfd);
2285 srel = htab->srelgot;
2286 for (; local_got < end_local_got; ++local_got)
2290 *local_got = sec->size;
2291 sec->size += GOT_ENTRY_SIZE;
2292 if ((*local_tls_type & (GOT_TLS_GD | GOT_TLS_IE)) == (GOT_TLS_GD | GOT_TLS_IE))
2293 sec->size += 2 * GOT_ENTRY_SIZE;
2294 else if ((*local_tls_type & GOT_TLS_GD) == GOT_TLS_GD)
2295 sec->size += GOT_ENTRY_SIZE;
2296 if (bfd_link_pic (info))
2298 srel->size += sizeof (Elf32_External_Rela);
2299 if ((*local_tls_type & (GOT_TLS_GD | GOT_TLS_IE)) == (GOT_TLS_GD | GOT_TLS_IE))
2300 srel->size += 2 * sizeof (Elf32_External_Rela);
2301 else if ((*local_tls_type & GOT_TLS_GD) == GOT_TLS_GD)
2302 srel->size += sizeof (Elf32_External_Rela);
2306 *local_got = (bfd_vma) -1;
2311 local_plt = end_local_got;
2312 end_local_plt = local_plt + locsymcount;
2313 if (! htab->etab.dynamic_sections_created)
2315 /* Won't be used, but be safe. */
2316 for (; local_plt < end_local_plt; ++local_plt)
2317 *local_plt = (bfd_vma) -1;
2322 srel = htab->srelplt;
2323 for (; local_plt < end_local_plt; ++local_plt)
2327 *local_plt = sec->size;
2328 sec->size += PLT_ENTRY_SIZE;
2329 if (bfd_link_pic (info))
2330 srel->size += sizeof (Elf32_External_Rela);
2333 *local_plt = (bfd_vma) -1;
2338 if (htab->tls_ldm_got.refcount > 0)
2340 /* Allocate 2 got entries and 1 dynamic reloc for
2341 R_PARISC_TLS_DTPMOD32 relocs. */
2342 htab->tls_ldm_got.offset = htab->sgot->size;
2343 htab->sgot->size += (GOT_ENTRY_SIZE * 2);
2344 htab->srelgot->size += sizeof (Elf32_External_Rela);
2347 htab->tls_ldm_got.offset = -1;
2349 /* Do all the .plt entries without relocs first. The dynamic linker
2350 uses the last .plt reloc to find the end of the .plt (and hence
2351 the start of the .got) for lazy linking. */
2352 elf_link_hash_traverse (&htab->etab, allocate_plt_static, info);
2354 /* Allocate global sym .plt and .got entries, and space for global
2355 sym dynamic relocs. */
2356 elf_link_hash_traverse (&htab->etab, allocate_dynrelocs, info);
2358 /* The check_relocs and adjust_dynamic_symbol entry points have
2359 determined the sizes of the various dynamic sections. Allocate
2362 for (sec = dynobj->sections; sec != NULL; sec = sec->next)
2364 if ((sec->flags & SEC_LINKER_CREATED) == 0)
2367 if (sec == htab->splt)
2369 if (htab->need_plt_stub)
2371 /* Make space for the plt stub at the end of the .plt
2372 section. We want this stub right at the end, up
2373 against the .got section. */
2374 int gotalign = bfd_section_alignment (dynobj, htab->sgot);
2375 int pltalign = bfd_section_alignment (dynobj, sec);
2378 if (gotalign > pltalign)
2379 (void) bfd_set_section_alignment (dynobj, sec, gotalign);
2380 mask = ((bfd_size_type) 1 << gotalign) - 1;
2381 sec->size = (sec->size + sizeof (plt_stub) + mask) & ~mask;
2384 else if (sec == htab->sgot
2385 || sec == htab->sdynbss)
2387 else if (CONST_STRNEQ (bfd_get_section_name (dynobj, sec), ".rela"))
2391 /* Remember whether there are any reloc sections other
2393 if (sec != htab->srelplt)
2396 /* We use the reloc_count field as a counter if we need
2397 to copy relocs into the output file. */
2398 sec->reloc_count = 0;
2403 /* It's not one of our sections, so don't allocate space. */
2409 /* If we don't need this section, strip it from the
2410 output file. This is mostly to handle .rela.bss and
2411 .rela.plt. We must create both sections in
2412 create_dynamic_sections, because they must be created
2413 before the linker maps input sections to output
2414 sections. The linker does that before
2415 adjust_dynamic_symbol is called, and it is that
2416 function which decides whether anything needs to go
2417 into these sections. */
2418 sec->flags |= SEC_EXCLUDE;
2422 if ((sec->flags & SEC_HAS_CONTENTS) == 0)
2425 /* Allocate memory for the section contents. Zero it, because
2426 we may not fill in all the reloc sections. */
2427 sec->contents = bfd_zalloc (dynobj, sec->size);
2428 if (sec->contents == NULL)
2432 if (htab->etab.dynamic_sections_created)
2434 /* Like IA-64 and HPPA64, always create a DT_PLTGOT. It
2435 actually has nothing to do with the PLT, it is how we
2436 communicate the LTP value of a load module to the dynamic
2438 #define add_dynamic_entry(TAG, VAL) \
2439 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
2441 if (!add_dynamic_entry (DT_PLTGOT, 0))
2444 /* Add some entries to the .dynamic section. We fill in the
2445 values later, in elf32_hppa_finish_dynamic_sections, but we
2446 must add the entries now so that we get the correct size for
2447 the .dynamic section. The DT_DEBUG entry is filled in by the
2448 dynamic linker and used by the debugger. */
2449 if (bfd_link_executable (info))
2451 if (!add_dynamic_entry (DT_DEBUG, 0))
2455 if (htab->srelplt->size != 0)
2457 if (!add_dynamic_entry (DT_PLTRELSZ, 0)
2458 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
2459 || !add_dynamic_entry (DT_JMPREL, 0))
2465 if (!add_dynamic_entry (DT_RELA, 0)
2466 || !add_dynamic_entry (DT_RELASZ, 0)
2467 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf32_External_Rela)))
2470 /* If any dynamic relocs apply to a read-only section,
2471 then we need a DT_TEXTREL entry. */
2472 if ((info->flags & DF_TEXTREL) == 0)
2473 elf_link_hash_traverse (&htab->etab, readonly_dynrelocs, info);
2475 if ((info->flags & DF_TEXTREL) != 0)
2477 if (!add_dynamic_entry (DT_TEXTREL, 0))
2482 #undef add_dynamic_entry
2487 /* External entry points for sizing and building linker stubs. */
2489 /* Set up various things so that we can make a list of input sections
2490 for each output section included in the link. Returns -1 on error,
2491 0 when no stubs will be needed, and 1 on success. */
2494 elf32_hppa_setup_section_lists (bfd *output_bfd, struct bfd_link_info *info)
2497 unsigned int bfd_count;
2498 unsigned int top_id, top_index;
2500 asection **input_list, **list;
2502 struct elf32_hppa_link_hash_table *htab = hppa_link_hash_table (info);
2507 /* Count the number of input BFDs and find the top input section id. */
2508 for (input_bfd = info->input_bfds, bfd_count = 0, top_id = 0;
2510 input_bfd = input_bfd->link.next)
2513 for (section = input_bfd->sections;
2515 section = section->next)
2517 if (top_id < section->id)
2518 top_id = section->id;
2521 htab->bfd_count = bfd_count;
2523 amt = sizeof (struct map_stub) * (top_id + 1);
2524 htab->stub_group = bfd_zmalloc (amt);
2525 if (htab->stub_group == NULL)
2528 /* We can't use output_bfd->section_count here to find the top output
2529 section index as some sections may have been removed, and
2530 strip_excluded_output_sections doesn't renumber the indices. */
2531 for (section = output_bfd->sections, top_index = 0;
2533 section = section->next)
2535 if (top_index < section->index)
2536 top_index = section->index;
2539 htab->top_index = top_index;
2540 amt = sizeof (asection *) * (top_index + 1);
2541 input_list = bfd_malloc (amt);
2542 htab->input_list = input_list;
2543 if (input_list == NULL)
2546 /* For sections we aren't interested in, mark their entries with a
2547 value we can check later. */
2548 list = input_list + top_index;
2550 *list = bfd_abs_section_ptr;
2551 while (list-- != input_list);
2553 for (section = output_bfd->sections;
2555 section = section->next)
2557 if ((section->flags & SEC_CODE) != 0)
2558 input_list[section->index] = NULL;
2564 /* The linker repeatedly calls this function for each input section,
2565 in the order that input sections are linked into output sections.
2566 Build lists of input sections to determine groupings between which
2567 we may insert linker stubs. */
2570 elf32_hppa_next_input_section (struct bfd_link_info *info, asection *isec)
2572 struct elf32_hppa_link_hash_table *htab = hppa_link_hash_table (info);
2577 if (isec->output_section->index <= htab->top_index)
2579 asection **list = htab->input_list + isec->output_section->index;
2580 if (*list != bfd_abs_section_ptr)
2582 /* Steal the link_sec pointer for our list. */
2583 #define PREV_SEC(sec) (htab->stub_group[(sec)->id].link_sec)
2584 /* This happens to make the list in reverse order,
2585 which is what we want. */
2586 PREV_SEC (isec) = *list;
2592 /* See whether we can group stub sections together. Grouping stub
2593 sections may result in fewer stubs. More importantly, we need to
2594 put all .init* and .fini* stubs at the beginning of the .init or
2595 .fini output sections respectively, because glibc splits the
2596 _init and _fini functions into multiple parts. Putting a stub in
2597 the middle of a function is not a good idea. */
2600 group_sections (struct elf32_hppa_link_hash_table *htab,
2601 bfd_size_type stub_group_size,
2602 bfd_boolean stubs_always_before_branch)
2604 asection **list = htab->input_list + htab->top_index;
2607 asection *tail = *list;
2608 if (tail == bfd_abs_section_ptr)
2610 while (tail != NULL)
2614 bfd_size_type total;
2615 bfd_boolean big_sec;
2619 big_sec = total >= stub_group_size;
2621 while ((prev = PREV_SEC (curr)) != NULL
2622 && ((total += curr->output_offset - prev->output_offset)
2626 /* OK, the size from the start of CURR to the end is less
2627 than 240000 bytes and thus can be handled by one stub
2628 section. (or the tail section is itself larger than
2629 240000 bytes, in which case we may be toast.)
2630 We should really be keeping track of the total size of
2631 stubs added here, as stubs contribute to the final output
2632 section size. That's a little tricky, and this way will
2633 only break if stubs added total more than 22144 bytes, or
2634 2768 long branch stubs. It seems unlikely for more than
2635 2768 different functions to be called, especially from
2636 code only 240000 bytes long. This limit used to be
2637 250000, but c++ code tends to generate lots of little
2638 functions, and sometimes violated the assumption. */
2641 prev = PREV_SEC (tail);
2642 /* Set up this stub group. */
2643 htab->stub_group[tail->id].link_sec = curr;
2645 while (tail != curr && (tail = prev) != NULL);
2647 /* But wait, there's more! Input sections up to 240000
2648 bytes before the stub section can be handled by it too.
2649 Don't do this if we have a really large section after the
2650 stubs, as adding more stubs increases the chance that
2651 branches may not reach into the stub section. */
2652 if (!stubs_always_before_branch && !big_sec)
2656 && ((total += tail->output_offset - prev->output_offset)
2660 prev = PREV_SEC (tail);
2661 htab->stub_group[tail->id].link_sec = curr;
2667 while (list-- != htab->input_list);
2668 free (htab->input_list);
2672 /* Read in all local syms for all input bfds, and create hash entries
2673 for export stubs if we are building a multi-subspace shared lib.
2674 Returns -1 on error, 1 if export stubs created, 0 otherwise. */
2677 get_local_syms (bfd *output_bfd, bfd *input_bfd, struct bfd_link_info *info)
2679 unsigned int bfd_indx;
2680 Elf_Internal_Sym *local_syms, **all_local_syms;
2681 int stub_changed = 0;
2682 struct elf32_hppa_link_hash_table *htab = hppa_link_hash_table (info);
2687 /* We want to read in symbol extension records only once. To do this
2688 we need to read in the local symbols in parallel and save them for
2689 later use; so hold pointers to the local symbols in an array. */
2690 bfd_size_type amt = sizeof (Elf_Internal_Sym *) * htab->bfd_count;
2691 all_local_syms = bfd_zmalloc (amt);
2692 htab->all_local_syms = all_local_syms;
2693 if (all_local_syms == NULL)
2696 /* Walk over all the input BFDs, swapping in local symbols.
2697 If we are creating a shared library, create hash entries for the
2701 input_bfd = input_bfd->link.next, bfd_indx++)
2703 Elf_Internal_Shdr *symtab_hdr;
2705 /* We'll need the symbol table in a second. */
2706 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
2707 if (symtab_hdr->sh_info == 0)
2710 /* We need an array of the local symbols attached to the input bfd. */
2711 local_syms = (Elf_Internal_Sym *) symtab_hdr->contents;
2712 if (local_syms == NULL)
2714 local_syms = bfd_elf_get_elf_syms (input_bfd, symtab_hdr,
2715 symtab_hdr->sh_info, 0,
2717 /* Cache them for elf_link_input_bfd. */
2718 symtab_hdr->contents = (unsigned char *) local_syms;
2720 if (local_syms == NULL)
2723 all_local_syms[bfd_indx] = local_syms;
2725 if (bfd_link_pic (info) && htab->multi_subspace)
2727 struct elf_link_hash_entry **eh_syms;
2728 struct elf_link_hash_entry **eh_symend;
2729 unsigned int symcount;
2731 symcount = (symtab_hdr->sh_size / sizeof (Elf32_External_Sym)
2732 - symtab_hdr->sh_info);
2733 eh_syms = (struct elf_link_hash_entry **) elf_sym_hashes (input_bfd);
2734 eh_symend = (struct elf_link_hash_entry **) (eh_syms + symcount);
2736 /* Look through the global syms for functions; We need to
2737 build export stubs for all globally visible functions. */
2738 for (; eh_syms < eh_symend; eh_syms++)
2740 struct elf32_hppa_link_hash_entry *hh;
2742 hh = hppa_elf_hash_entry (*eh_syms);
2744 while (hh->eh.root.type == bfd_link_hash_indirect
2745 || hh->eh.root.type == bfd_link_hash_warning)
2746 hh = hppa_elf_hash_entry (hh->eh.root.u.i.link);
2748 /* At this point in the link, undefined syms have been
2749 resolved, so we need to check that the symbol was
2750 defined in this BFD. */
2751 if ((hh->eh.root.type == bfd_link_hash_defined
2752 || hh->eh.root.type == bfd_link_hash_defweak)
2753 && hh->eh.type == STT_FUNC
2754 && hh->eh.root.u.def.section->output_section != NULL
2755 && (hh->eh.root.u.def.section->output_section->owner
2757 && hh->eh.root.u.def.section->owner == input_bfd
2758 && hh->eh.def_regular
2759 && !hh->eh.forced_local
2760 && ELF_ST_VISIBILITY (hh->eh.other) == STV_DEFAULT)
2763 const char *stub_name;
2764 struct elf32_hppa_stub_hash_entry *hsh;
2766 sec = hh->eh.root.u.def.section;
2767 stub_name = hh_name (hh);
2768 hsh = hppa_stub_hash_lookup (&htab->bstab,
2773 hsh = hppa_add_stub (stub_name, sec, htab);
2777 hsh->target_value = hh->eh.root.u.def.value;
2778 hsh->target_section = hh->eh.root.u.def.section;
2779 hsh->stub_type = hppa_stub_export;
2785 (*_bfd_error_handler) (_("%B: duplicate export stub %s"),
2794 return stub_changed;
2797 /* Determine and set the size of the stub section for a final link.
2799 The basic idea here is to examine all the relocations looking for
2800 PC-relative calls to a target that is unreachable with a "bl"
2804 elf32_hppa_size_stubs
2805 (bfd *output_bfd, bfd *stub_bfd, struct bfd_link_info *info,
2806 bfd_boolean multi_subspace, bfd_signed_vma group_size,
2807 asection * (*add_stub_section) (const char *, asection *),
2808 void (*layout_sections_again) (void))
2810 bfd_size_type stub_group_size;
2811 bfd_boolean stubs_always_before_branch;
2812 bfd_boolean stub_changed;
2813 struct elf32_hppa_link_hash_table *htab = hppa_link_hash_table (info);
2818 /* Stash our params away. */
2819 htab->stub_bfd = stub_bfd;
2820 htab->multi_subspace = multi_subspace;
2821 htab->add_stub_section = add_stub_section;
2822 htab->layout_sections_again = layout_sections_again;
2823 stubs_always_before_branch = group_size < 0;
2825 stub_group_size = -group_size;
2827 stub_group_size = group_size;
2828 if (stub_group_size == 1)
2830 /* Default values. */
2831 if (stubs_always_before_branch)
2833 stub_group_size = 7680000;
2834 if (htab->has_17bit_branch || htab->multi_subspace)
2835 stub_group_size = 240000;
2836 if (htab->has_12bit_branch)
2837 stub_group_size = 7500;
2841 stub_group_size = 6971392;
2842 if (htab->has_17bit_branch || htab->multi_subspace)
2843 stub_group_size = 217856;
2844 if (htab->has_12bit_branch)
2845 stub_group_size = 6808;
2849 group_sections (htab, stub_group_size, stubs_always_before_branch);
2851 switch (get_local_syms (output_bfd, info->input_bfds, info))
2854 if (htab->all_local_syms)
2855 goto error_ret_free_local;
2859 stub_changed = FALSE;
2863 stub_changed = TRUE;
2870 unsigned int bfd_indx;
2873 for (input_bfd = info->input_bfds, bfd_indx = 0;
2875 input_bfd = input_bfd->link.next, bfd_indx++)
2877 Elf_Internal_Shdr *symtab_hdr;
2879 Elf_Internal_Sym *local_syms;
2881 /* We'll need the symbol table in a second. */
2882 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
2883 if (symtab_hdr->sh_info == 0)
2886 local_syms = htab->all_local_syms[bfd_indx];
2888 /* Walk over each section attached to the input bfd. */
2889 for (section = input_bfd->sections;
2891 section = section->next)
2893 Elf_Internal_Rela *internal_relocs, *irelaend, *irela;
2895 /* If there aren't any relocs, then there's nothing more
2897 if ((section->flags & SEC_RELOC) == 0
2898 || section->reloc_count == 0)
2901 /* If this section is a link-once section that will be
2902 discarded, then don't create any stubs. */
2903 if (section->output_section == NULL
2904 || section->output_section->owner != output_bfd)
2907 /* Get the relocs. */
2909 = _bfd_elf_link_read_relocs (input_bfd, section, NULL, NULL,
2911 if (internal_relocs == NULL)
2912 goto error_ret_free_local;
2914 /* Now examine each relocation. */
2915 irela = internal_relocs;
2916 irelaend = irela + section->reloc_count;
2917 for (; irela < irelaend; irela++)
2919 unsigned int r_type, r_indx;
2920 enum elf32_hppa_stub_type stub_type;
2921 struct elf32_hppa_stub_hash_entry *hsh;
2924 bfd_vma destination;
2925 struct elf32_hppa_link_hash_entry *hh;
2927 const asection *id_sec;
2929 r_type = ELF32_R_TYPE (irela->r_info);
2930 r_indx = ELF32_R_SYM (irela->r_info);
2932 if (r_type >= (unsigned int) R_PARISC_UNIMPLEMENTED)
2934 bfd_set_error (bfd_error_bad_value);
2935 error_ret_free_internal:
2936 if (elf_section_data (section)->relocs == NULL)
2937 free (internal_relocs);
2938 goto error_ret_free_local;
2941 /* Only look for stubs on call instructions. */
2942 if (r_type != (unsigned int) R_PARISC_PCREL12F
2943 && r_type != (unsigned int) R_PARISC_PCREL17F
2944 && r_type != (unsigned int) R_PARISC_PCREL22F)
2947 /* Now determine the call target, its name, value,
2953 if (r_indx < symtab_hdr->sh_info)
2955 /* It's a local symbol. */
2956 Elf_Internal_Sym *sym;
2957 Elf_Internal_Shdr *hdr;
2960 sym = local_syms + r_indx;
2961 if (ELF_ST_TYPE (sym->st_info) != STT_SECTION)
2962 sym_value = sym->st_value;
2963 shndx = sym->st_shndx;
2964 if (shndx < elf_numsections (input_bfd))
2966 hdr = elf_elfsections (input_bfd)[shndx];
2967 sym_sec = hdr->bfd_section;
2968 destination = (sym_value + irela->r_addend
2969 + sym_sec->output_offset
2970 + sym_sec->output_section->vma);
2975 /* It's an external symbol. */
2978 e_indx = r_indx - symtab_hdr->sh_info;
2979 hh = hppa_elf_hash_entry (elf_sym_hashes (input_bfd)[e_indx]);
2981 while (hh->eh.root.type == bfd_link_hash_indirect
2982 || hh->eh.root.type == bfd_link_hash_warning)
2983 hh = hppa_elf_hash_entry (hh->eh.root.u.i.link);
2985 if (hh->eh.root.type == bfd_link_hash_defined
2986 || hh->eh.root.type == bfd_link_hash_defweak)
2988 sym_sec = hh->eh.root.u.def.section;
2989 sym_value = hh->eh.root.u.def.value;
2990 if (sym_sec->output_section != NULL)
2991 destination = (sym_value + irela->r_addend
2992 + sym_sec->output_offset
2993 + sym_sec->output_section->vma);
2995 else if (hh->eh.root.type == bfd_link_hash_undefweak)
2997 if (! bfd_link_pic (info))
3000 else if (hh->eh.root.type == bfd_link_hash_undefined)
3002 if (! (info->unresolved_syms_in_objects == RM_IGNORE
3003 && (ELF_ST_VISIBILITY (hh->eh.other)
3005 && hh->eh.type != STT_PARISC_MILLI))
3010 bfd_set_error (bfd_error_bad_value);
3011 goto error_ret_free_internal;
3015 /* Determine what (if any) linker stub is needed. */
3016 stub_type = hppa_type_of_stub (section, irela, hh,
3018 if (stub_type == hppa_stub_none)
3021 /* Support for grouping stub sections. */
3022 id_sec = htab->stub_group[section->id].link_sec;
3024 /* Get the name of this stub. */
3025 stub_name = hppa_stub_name (id_sec, sym_sec, hh, irela);
3027 goto error_ret_free_internal;
3029 hsh = hppa_stub_hash_lookup (&htab->bstab,
3034 /* The proper stub has already been created. */
3039 hsh = hppa_add_stub (stub_name, section, htab);
3043 goto error_ret_free_internal;
3046 hsh->target_value = sym_value;
3047 hsh->target_section = sym_sec;
3048 hsh->stub_type = stub_type;
3049 if (bfd_link_pic (info))
3051 if (stub_type == hppa_stub_import)
3052 hsh->stub_type = hppa_stub_import_shared;
3053 else if (stub_type == hppa_stub_long_branch)
3054 hsh->stub_type = hppa_stub_long_branch_shared;
3057 stub_changed = TRUE;
3060 /* We're done with the internal relocs, free them. */
3061 if (elf_section_data (section)->relocs == NULL)
3062 free (internal_relocs);
3069 /* OK, we've added some stubs. Find out the new size of the
3071 for (stub_sec = htab->stub_bfd->sections;
3073 stub_sec = stub_sec->next)
3076 bfd_hash_traverse (&htab->bstab, hppa_size_one_stub, htab);
3078 /* Ask the linker to do its stuff. */
3079 (*htab->layout_sections_again) ();
3080 stub_changed = FALSE;
3083 free (htab->all_local_syms);
3086 error_ret_free_local:
3087 free (htab->all_local_syms);
3091 /* For a final link, this function is called after we have sized the
3092 stubs to provide a value for __gp. */
3095 elf32_hppa_set_gp (bfd *abfd, struct bfd_link_info *info)
3097 struct bfd_link_hash_entry *h;
3098 asection *sec = NULL;
3100 struct elf32_hppa_link_hash_table *htab;
3102 htab = hppa_link_hash_table (info);
3106 h = bfd_link_hash_lookup (&htab->etab.root, "$global$", FALSE, FALSE, FALSE);
3109 && (h->type == bfd_link_hash_defined
3110 || h->type == bfd_link_hash_defweak))
3112 gp_val = h->u.def.value;
3113 sec = h->u.def.section;
3117 asection *splt = bfd_get_section_by_name (abfd, ".plt");
3118 asection *sgot = bfd_get_section_by_name (abfd, ".got");
3120 /* Choose to point our LTP at, in this order, one of .plt, .got,
3121 or .data, if these sections exist. In the case of choosing
3122 .plt try to make the LTP ideal for addressing anywhere in the
3123 .plt or .got with a 14 bit signed offset. Typically, the end
3124 of the .plt is the start of the .got, so choose .plt + 0x2000
3125 if either the .plt or .got is larger than 0x2000. If both
3126 the .plt and .got are smaller than 0x2000, choose the end of
3127 the .plt section. */
3128 sec = strcmp (bfd_get_target (abfd), "elf32-hppa-netbsd") == 0
3133 if (gp_val > 0x2000 || (sgot && sgot->size > 0x2000))
3143 if (strcmp (bfd_get_target (abfd), "elf32-hppa-netbsd") != 0)
3145 /* We know we don't have a .plt. If .got is large,
3147 if (sec->size > 0x2000)
3153 /* No .plt or .got. Who cares what the LTP is? */
3154 sec = bfd_get_section_by_name (abfd, ".data");
3160 h->type = bfd_link_hash_defined;
3161 h->u.def.value = gp_val;
3163 h->u.def.section = sec;
3165 h->u.def.section = bfd_abs_section_ptr;
3169 if (sec != NULL && sec->output_section != NULL)
3170 gp_val += sec->output_section->vma + sec->output_offset;
3172 elf_gp (abfd) = gp_val;
3176 /* Build all the stubs associated with the current output file. The
3177 stubs are kept in a hash table attached to the main linker hash
3178 table. We also set up the .plt entries for statically linked PIC
3179 functions here. This function is called via hppaelf_finish in the
3183 elf32_hppa_build_stubs (struct bfd_link_info *info)
3186 struct bfd_hash_table *table;
3187 struct elf32_hppa_link_hash_table *htab;
3189 htab = hppa_link_hash_table (info);
3193 for (stub_sec = htab->stub_bfd->sections;
3195 stub_sec = stub_sec->next)
3199 /* Allocate memory to hold the linker stubs. */
3200 size = stub_sec->size;
3201 stub_sec->contents = bfd_zalloc (htab->stub_bfd, size);
3202 if (stub_sec->contents == NULL && size != 0)
3207 /* Build the stubs as directed by the stub hash table. */
3208 table = &htab->bstab;
3209 bfd_hash_traverse (table, hppa_build_one_stub, info);
3214 /* Return the base vma address which should be subtracted from the real
3215 address when resolving a dtpoff relocation.
3216 This is PT_TLS segment p_vaddr. */
3219 dtpoff_base (struct bfd_link_info *info)
3221 /* If tls_sec is NULL, we should have signalled an error already. */
3222 if (elf_hash_table (info)->tls_sec == NULL)
3224 return elf_hash_table (info)->tls_sec->vma;
3227 /* Return the relocation value for R_PARISC_TLS_TPOFF*.. */
3230 tpoff (struct bfd_link_info *info, bfd_vma address)
3232 struct elf_link_hash_table *htab = elf_hash_table (info);
3234 /* If tls_sec is NULL, we should have signalled an error already. */
3235 if (htab->tls_sec == NULL)
3237 /* hppa TLS ABI is variant I and static TLS block start just after
3238 tcbhead structure which has 2 pointer fields. */
3239 return (address - htab->tls_sec->vma
3240 + align_power ((bfd_vma) 8, htab->tls_sec->alignment_power));
3243 /* Perform a final link. */
3246 elf32_hppa_final_link (bfd *abfd, struct bfd_link_info *info)
3248 /* Invoke the regular ELF linker to do all the work. */
3249 if (!bfd_elf_final_link (abfd, info))
3252 /* If we're producing a final executable, sort the contents of the
3254 if (bfd_link_relocatable (info))
3257 return elf_hppa_sort_unwind (abfd);
3260 /* Record the lowest address for the data and text segments. */
3263 hppa_record_segment_addr (bfd *abfd, asection *section, void *data)
3265 struct elf32_hppa_link_hash_table *htab;
3267 htab = (struct elf32_hppa_link_hash_table*) data;
3271 if ((section->flags & (SEC_ALLOC | SEC_LOAD)) == (SEC_ALLOC | SEC_LOAD))
3274 Elf_Internal_Phdr *p;
3276 p = _bfd_elf_find_segment_containing_section (abfd, section->output_section);
3277 BFD_ASSERT (p != NULL);
3280 if ((section->flags & SEC_READONLY) != 0)
3282 if (value < htab->text_segment_base)
3283 htab->text_segment_base = value;
3287 if (value < htab->data_segment_base)
3288 htab->data_segment_base = value;
3293 /* Perform a relocation as part of a final link. */
3295 static bfd_reloc_status_type
3296 final_link_relocate (asection *input_section,
3298 const Elf_Internal_Rela *rela,
3300 struct elf32_hppa_link_hash_table *htab,
3302 struct elf32_hppa_link_hash_entry *hh,
3303 struct bfd_link_info *info)
3306 unsigned int r_type = ELF32_R_TYPE (rela->r_info);
3307 unsigned int orig_r_type = r_type;
3308 reloc_howto_type *howto = elf_hppa_howto_table + r_type;
3309 int r_format = howto->bitsize;
3310 enum hppa_reloc_field_selector_type_alt r_field;
3311 bfd *input_bfd = input_section->owner;
3312 bfd_vma offset = rela->r_offset;
3313 bfd_vma max_branch_offset = 0;
3314 bfd_byte *hit_data = contents + offset;
3315 bfd_signed_vma addend = rela->r_addend;
3317 struct elf32_hppa_stub_hash_entry *hsh = NULL;
3320 if (r_type == R_PARISC_NONE)
3321 return bfd_reloc_ok;
3323 insn = bfd_get_32 (input_bfd, hit_data);
3325 /* Find out where we are and where we're going. */
3326 location = (offset +
3327 input_section->output_offset +
3328 input_section->output_section->vma);
3330 /* If we are not building a shared library, convert DLTIND relocs to
3332 if (!bfd_link_pic (info))
3336 case R_PARISC_DLTIND21L:
3337 case R_PARISC_TLS_GD21L:
3338 case R_PARISC_TLS_LDM21L:
3339 case R_PARISC_TLS_IE21L:
3340 r_type = R_PARISC_DPREL21L;
3343 case R_PARISC_DLTIND14R:
3344 case R_PARISC_TLS_GD14R:
3345 case R_PARISC_TLS_LDM14R:
3346 case R_PARISC_TLS_IE14R:
3347 r_type = R_PARISC_DPREL14R;
3350 case R_PARISC_DLTIND14F:
3351 r_type = R_PARISC_DPREL14F;
3358 case R_PARISC_PCREL12F:
3359 case R_PARISC_PCREL17F:
3360 case R_PARISC_PCREL22F:
3361 /* If this call should go via the plt, find the import stub in
3364 || sym_sec->output_section == NULL
3366 && hh->eh.plt.offset != (bfd_vma) -1
3367 && hh->eh.dynindx != -1
3369 && (bfd_link_pic (info)
3370 || !hh->eh.def_regular
3371 || hh->eh.root.type == bfd_link_hash_defweak)))
3373 hsh = hppa_get_stub_entry (input_section, sym_sec,
3377 value = (hsh->stub_offset
3378 + hsh->stub_sec->output_offset
3379 + hsh->stub_sec->output_section->vma);
3382 else if (sym_sec == NULL && hh != NULL
3383 && hh->eh.root.type == bfd_link_hash_undefweak)
3385 /* It's OK if undefined weak. Calls to undefined weak
3386 symbols behave as if the "called" function
3387 immediately returns. We can thus call to a weak
3388 function without first checking whether the function
3394 return bfd_reloc_undefined;
3398 case R_PARISC_PCREL21L:
3399 case R_PARISC_PCREL17C:
3400 case R_PARISC_PCREL17R:
3401 case R_PARISC_PCREL14R:
3402 case R_PARISC_PCREL14F:
3403 case R_PARISC_PCREL32:
3404 /* Make it a pc relative offset. */
3409 case R_PARISC_DPREL21L:
3410 case R_PARISC_DPREL14R:
3411 case R_PARISC_DPREL14F:
3412 /* Convert instructions that use the linkage table pointer (r19) to
3413 instructions that use the global data pointer (dp). This is the
3414 most efficient way of using PIC code in an incomplete executable,
3415 but the user must follow the standard runtime conventions for
3416 accessing data for this to work. */
3417 if (orig_r_type != r_type)
3419 if (r_type == R_PARISC_DPREL21L)
3421 /* GCC sometimes uses a register other than r19 for the
3422 operation, so we must convert any addil instruction
3423 that uses this relocation. */
3424 if ((insn & 0xfc000000) == ((int) OP_ADDIL << 26))
3427 /* We must have a ldil instruction. It's too hard to find
3428 and convert the associated add instruction, so issue an
3430 (*_bfd_error_handler)
3431 (_("%B(%A+0x%lx): %s fixup for insn 0x%x is not supported in a non-shared link"),
3438 else if (r_type == R_PARISC_DPREL14F)
3440 /* This must be a format 1 load/store. Change the base
3442 insn = (insn & 0xfc1ffff) | (27 << 21);
3446 /* For all the DP relative relocations, we need to examine the symbol's
3447 section. If it has no section or if it's a code section, then
3448 "data pointer relative" makes no sense. In that case we don't
3449 adjust the "value", and for 21 bit addil instructions, we change the
3450 source addend register from %dp to %r0. This situation commonly
3451 arises for undefined weak symbols and when a variable's "constness"
3452 is declared differently from the way the variable is defined. For
3453 instance: "extern int foo" with foo defined as "const int foo". */
3454 if (sym_sec == NULL || (sym_sec->flags & SEC_CODE) != 0)
3456 if ((insn & ((0x3f << 26) | (0x1f << 21)))
3457 == (((int) OP_ADDIL << 26) | (27 << 21)))
3459 insn &= ~ (0x1f << 21);
3461 /* Now try to make things easy for the dynamic linker. */
3467 case R_PARISC_DLTIND21L:
3468 case R_PARISC_DLTIND14R:
3469 case R_PARISC_DLTIND14F:
3470 case R_PARISC_TLS_GD21L:
3471 case R_PARISC_TLS_LDM21L:
3472 case R_PARISC_TLS_IE21L:
3473 case R_PARISC_TLS_GD14R:
3474 case R_PARISC_TLS_LDM14R:
3475 case R_PARISC_TLS_IE14R:
3476 value -= elf_gp (input_section->output_section->owner);
3479 case R_PARISC_SEGREL32:
3480 if ((sym_sec->flags & SEC_CODE) != 0)
3481 value -= htab->text_segment_base;
3483 value -= htab->data_segment_base;
3492 case R_PARISC_DIR32:
3493 case R_PARISC_DIR14F:
3494 case R_PARISC_DIR17F:
3495 case R_PARISC_PCREL17C:
3496 case R_PARISC_PCREL14F:
3497 case R_PARISC_PCREL32:
3498 case R_PARISC_DPREL14F:
3499 case R_PARISC_PLABEL32:
3500 case R_PARISC_DLTIND14F:
3501 case R_PARISC_SEGBASE:
3502 case R_PARISC_SEGREL32:
3503 case R_PARISC_TLS_DTPMOD32:
3504 case R_PARISC_TLS_DTPOFF32:
3505 case R_PARISC_TLS_TPREL32:
3509 case R_PARISC_DLTIND21L:
3510 case R_PARISC_PCREL21L:
3511 case R_PARISC_PLABEL21L:
3515 case R_PARISC_DIR21L:
3516 case R_PARISC_DPREL21L:
3517 case R_PARISC_TLS_GD21L:
3518 case R_PARISC_TLS_LDM21L:
3519 case R_PARISC_TLS_LDO21L:
3520 case R_PARISC_TLS_IE21L:
3521 case R_PARISC_TLS_LE21L:
3525 case R_PARISC_PCREL17R:
3526 case R_PARISC_PCREL14R:
3527 case R_PARISC_PLABEL14R:
3528 case R_PARISC_DLTIND14R:
3532 case R_PARISC_DIR17R:
3533 case R_PARISC_DIR14R:
3534 case R_PARISC_DPREL14R:
3535 case R_PARISC_TLS_GD14R:
3536 case R_PARISC_TLS_LDM14R:
3537 case R_PARISC_TLS_LDO14R:
3538 case R_PARISC_TLS_IE14R:
3539 case R_PARISC_TLS_LE14R:
3543 case R_PARISC_PCREL12F:
3544 case R_PARISC_PCREL17F:
3545 case R_PARISC_PCREL22F:
3548 if (r_type == (unsigned int) R_PARISC_PCREL17F)
3550 max_branch_offset = (1 << (17-1)) << 2;
3552 else if (r_type == (unsigned int) R_PARISC_PCREL12F)
3554 max_branch_offset = (1 << (12-1)) << 2;
3558 max_branch_offset = (1 << (22-1)) << 2;
3561 /* sym_sec is NULL on undefined weak syms or when shared on
3562 undefined syms. We've already checked for a stub for the
3563 shared undefined case. */
3564 if (sym_sec == NULL)
3567 /* If the branch is out of reach, then redirect the
3568 call to the local stub for this function. */
3569 if (value + addend + max_branch_offset >= 2*max_branch_offset)
3571 hsh = hppa_get_stub_entry (input_section, sym_sec,
3574 return bfd_reloc_undefined;
3576 /* Munge up the value and addend so that we call the stub
3577 rather than the procedure directly. */
3578 value = (hsh->stub_offset
3579 + hsh->stub_sec->output_offset
3580 + hsh->stub_sec->output_section->vma
3586 /* Something we don't know how to handle. */
3588 return bfd_reloc_notsupported;
3591 /* Make sure we can reach the stub. */
3592 if (max_branch_offset != 0
3593 && value + addend + max_branch_offset >= 2*max_branch_offset)
3595 (*_bfd_error_handler)
3596 (_("%B(%A+0x%lx): cannot reach %s, recompile with -ffunction-sections"),
3600 hsh->bh_root.string);
3601 bfd_set_error (bfd_error_bad_value);
3602 return bfd_reloc_notsupported;
3605 val = hppa_field_adjust (value, addend, r_field);
3609 case R_PARISC_PCREL12F:
3610 case R_PARISC_PCREL17C:
3611 case R_PARISC_PCREL17F:
3612 case R_PARISC_PCREL17R:
3613 case R_PARISC_PCREL22F:
3614 case R_PARISC_DIR17F:
3615 case R_PARISC_DIR17R:
3616 /* This is a branch. Divide the offset by four.
3617 Note that we need to decide whether it's a branch or
3618 otherwise by inspecting the reloc. Inspecting insn won't
3619 work as insn might be from a .word directive. */
3627 insn = hppa_rebuild_insn (insn, val, r_format);
3629 /* Update the instruction word. */
3630 bfd_put_32 (input_bfd, (bfd_vma) insn, hit_data);
3631 return bfd_reloc_ok;
3634 /* Relocate an HPPA ELF section. */
3637 elf32_hppa_relocate_section (bfd *output_bfd,
3638 struct bfd_link_info *info,
3640 asection *input_section,
3642 Elf_Internal_Rela *relocs,
3643 Elf_Internal_Sym *local_syms,
3644 asection **local_sections)
3646 bfd_vma *local_got_offsets;
3647 struct elf32_hppa_link_hash_table *htab;
3648 Elf_Internal_Shdr *symtab_hdr;
3649 Elf_Internal_Rela *rela;
3650 Elf_Internal_Rela *relend;
3652 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
3654 htab = hppa_link_hash_table (info);
3658 local_got_offsets = elf_local_got_offsets (input_bfd);
3661 relend = relocs + input_section->reloc_count;
3662 for (; rela < relend; rela++)
3664 unsigned int r_type;
3665 reloc_howto_type *howto;
3666 unsigned int r_symndx;
3667 struct elf32_hppa_link_hash_entry *hh;
3668 Elf_Internal_Sym *sym;
3671 bfd_reloc_status_type rstatus;
3672 const char *sym_name;
3674 bfd_boolean warned_undef;
3676 r_type = ELF32_R_TYPE (rela->r_info);
3677 if (r_type >= (unsigned int) R_PARISC_UNIMPLEMENTED)
3679 bfd_set_error (bfd_error_bad_value);
3682 if (r_type == (unsigned int) R_PARISC_GNU_VTENTRY
3683 || r_type == (unsigned int) R_PARISC_GNU_VTINHERIT)
3686 r_symndx = ELF32_R_SYM (rela->r_info);
3690 warned_undef = FALSE;
3691 if (r_symndx < symtab_hdr->sh_info)
3693 /* This is a local symbol, h defaults to NULL. */
3694 sym = local_syms + r_symndx;
3695 sym_sec = local_sections[r_symndx];
3696 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sym_sec, rela);
3700 struct elf_link_hash_entry *eh;
3701 bfd_boolean unresolved_reloc, ignored;
3702 struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (input_bfd);
3704 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rela,
3705 r_symndx, symtab_hdr, sym_hashes,
3706 eh, sym_sec, relocation,
3707 unresolved_reloc, warned_undef,
3710 if (!bfd_link_relocatable (info)
3712 && eh->root.type != bfd_link_hash_defined
3713 && eh->root.type != bfd_link_hash_defweak
3714 && eh->root.type != bfd_link_hash_undefweak)
3716 if (info->unresolved_syms_in_objects == RM_IGNORE
3717 && ELF_ST_VISIBILITY (eh->other) == STV_DEFAULT
3718 && eh->type == STT_PARISC_MILLI)
3720 if (! info->callbacks->undefined_symbol
3721 (info, eh_name (eh), input_bfd,
3722 input_section, rela->r_offset, FALSE))
3724 warned_undef = TRUE;
3727 hh = hppa_elf_hash_entry (eh);
3730 if (sym_sec != NULL && discarded_section (sym_sec))
3731 RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section,
3733 elf_hppa_howto_table + r_type, 0,
3736 if (bfd_link_relocatable (info))
3739 /* Do any required modifications to the relocation value, and
3740 determine what types of dynamic info we need to output, if
3745 case R_PARISC_DLTIND14F:
3746 case R_PARISC_DLTIND14R:
3747 case R_PARISC_DLTIND21L:
3750 bfd_boolean do_got = 0;
3752 /* Relocation is to the entry for this symbol in the
3753 global offset table. */
3758 off = hh->eh.got.offset;
3759 dyn = htab->etab.dynamic_sections_created;
3760 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn,
3761 bfd_link_pic (info),
3764 /* If we aren't going to call finish_dynamic_symbol,
3765 then we need to handle initialisation of the .got
3766 entry and create needed relocs here. Since the
3767 offset must always be a multiple of 4, we use the
3768 least significant bit to record whether we have
3769 initialised it already. */
3774 hh->eh.got.offset |= 1;
3781 /* Local symbol case. */
3782 if (local_got_offsets == NULL)
3785 off = local_got_offsets[r_symndx];
3787 /* The offset must always be a multiple of 4. We use
3788 the least significant bit to record whether we have
3789 already generated the necessary reloc. */
3794 local_got_offsets[r_symndx] |= 1;
3801 if (bfd_link_pic (info))
3803 /* Output a dynamic relocation for this GOT entry.
3804 In this case it is relative to the base of the
3805 object because the symbol index is zero. */
3806 Elf_Internal_Rela outrel;
3808 asection *sec = htab->srelgot;
3810 outrel.r_offset = (off
3811 + htab->sgot->output_offset
3812 + htab->sgot->output_section->vma);
3813 outrel.r_info = ELF32_R_INFO (0, R_PARISC_DIR32);
3814 outrel.r_addend = relocation;
3815 loc = sec->contents;
3816 loc += sec->reloc_count++ * sizeof (Elf32_External_Rela);
3817 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
3820 bfd_put_32 (output_bfd, relocation,
3821 htab->sgot->contents + off);
3824 if (off >= (bfd_vma) -2)
3827 /* Add the base of the GOT to the relocation value. */
3829 + htab->sgot->output_offset
3830 + htab->sgot->output_section->vma);
3834 case R_PARISC_SEGREL32:
3835 /* If this is the first SEGREL relocation, then initialize
3836 the segment base values. */
3837 if (htab->text_segment_base == (bfd_vma) -1)
3838 bfd_map_over_sections (output_bfd, hppa_record_segment_addr, htab);
3841 case R_PARISC_PLABEL14R:
3842 case R_PARISC_PLABEL21L:
3843 case R_PARISC_PLABEL32:
3844 if (htab->etab.dynamic_sections_created)
3847 bfd_boolean do_plt = 0;
3848 /* If we have a global symbol with a PLT slot, then
3849 redirect this relocation to it. */
3852 off = hh->eh.plt.offset;
3853 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (1,
3854 bfd_link_pic (info),
3857 /* In a non-shared link, adjust_dynamic_symbols
3858 isn't called for symbols forced local. We
3859 need to write out the plt entry here. */
3864 hh->eh.plt.offset |= 1;
3871 bfd_vma *local_plt_offsets;
3873 if (local_got_offsets == NULL)
3876 local_plt_offsets = local_got_offsets + symtab_hdr->sh_info;
3877 off = local_plt_offsets[r_symndx];
3879 /* As for the local .got entry case, we use the last
3880 bit to record whether we've already initialised
3881 this local .plt entry. */
3886 local_plt_offsets[r_symndx] |= 1;
3893 if (bfd_link_pic (info))
3895 /* Output a dynamic IPLT relocation for this
3897 Elf_Internal_Rela outrel;
3899 asection *s = htab->srelplt;
3901 outrel.r_offset = (off
3902 + htab->splt->output_offset
3903 + htab->splt->output_section->vma);
3904 outrel.r_info = ELF32_R_INFO (0, R_PARISC_IPLT);
3905 outrel.r_addend = relocation;
3907 loc += s->reloc_count++ * sizeof (Elf32_External_Rela);
3908 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
3912 bfd_put_32 (output_bfd,
3914 htab->splt->contents + off);
3915 bfd_put_32 (output_bfd,
3916 elf_gp (htab->splt->output_section->owner),
3917 htab->splt->contents + off + 4);
3921 if (off >= (bfd_vma) -2)
3924 /* PLABELs contain function pointers. Relocation is to
3925 the entry for the function in the .plt. The magic +2
3926 offset signals to $$dyncall that the function pointer
3927 is in the .plt and thus has a gp pointer too.
3928 Exception: Undefined PLABELs should have a value of
3931 || (hh->eh.root.type != bfd_link_hash_undefweak
3932 && hh->eh.root.type != bfd_link_hash_undefined))
3935 + htab->splt->output_offset
3936 + htab->splt->output_section->vma
3941 /* Fall through and possibly emit a dynamic relocation. */
3943 case R_PARISC_DIR17F:
3944 case R_PARISC_DIR17R:
3945 case R_PARISC_DIR14F:
3946 case R_PARISC_DIR14R:
3947 case R_PARISC_DIR21L:
3948 case R_PARISC_DPREL14F:
3949 case R_PARISC_DPREL14R:
3950 case R_PARISC_DPREL21L:
3951 case R_PARISC_DIR32:
3952 if ((input_section->flags & SEC_ALLOC) == 0)
3955 /* The reloc types handled here and this conditional
3956 expression must match the code in ..check_relocs and
3957 allocate_dynrelocs. ie. We need exactly the same condition
3958 as in ..check_relocs, with some extra conditions (dynindx
3959 test in this case) to cater for relocs removed by
3960 allocate_dynrelocs. If you squint, the non-shared test
3961 here does indeed match the one in ..check_relocs, the
3962 difference being that here we test DEF_DYNAMIC as well as
3963 !DEF_REGULAR. All common syms end up with !DEF_REGULAR,
3964 which is why we can't use just that test here.
3965 Conversely, DEF_DYNAMIC can't be used in check_relocs as
3966 there all files have not been loaded. */
3967 if ((bfd_link_pic (info)
3969 || ELF_ST_VISIBILITY (hh->eh.other) == STV_DEFAULT
3970 || hh->eh.root.type != bfd_link_hash_undefweak)
3971 && (IS_ABSOLUTE_RELOC (r_type)
3972 || !SYMBOL_CALLS_LOCAL (info, &hh->eh)))
3973 || (!bfd_link_pic (info)
3975 && hh->eh.dynindx != -1
3976 && !hh->eh.non_got_ref
3977 && ((ELIMINATE_COPY_RELOCS
3978 && hh->eh.def_dynamic
3979 && !hh->eh.def_regular)
3980 || hh->eh.root.type == bfd_link_hash_undefweak
3981 || hh->eh.root.type == bfd_link_hash_undefined)))
3983 Elf_Internal_Rela outrel;
3988 /* When generating a shared object, these relocations
3989 are copied into the output file to be resolved at run
3992 outrel.r_addend = rela->r_addend;
3994 _bfd_elf_section_offset (output_bfd, info, input_section,
3996 skip = (outrel.r_offset == (bfd_vma) -1
3997 || outrel.r_offset == (bfd_vma) -2);
3998 outrel.r_offset += (input_section->output_offset
3999 + input_section->output_section->vma);
4003 memset (&outrel, 0, sizeof (outrel));
4006 && hh->eh.dynindx != -1
4008 || !IS_ABSOLUTE_RELOC (r_type)
4009 || !bfd_link_pic (info)
4010 || !SYMBOLIC_BIND (info, &hh->eh)
4011 || !hh->eh.def_regular))
4013 outrel.r_info = ELF32_R_INFO (hh->eh.dynindx, r_type);
4015 else /* It's a local symbol, or one marked to become local. */
4019 /* Add the absolute offset of the symbol. */
4020 outrel.r_addend += relocation;
4022 /* Global plabels need to be processed by the
4023 dynamic linker so that functions have at most one
4024 fptr. For this reason, we need to differentiate
4025 between global and local plabels, which we do by
4026 providing the function symbol for a global plabel
4027 reloc, and no symbol for local plabels. */
4030 && sym_sec->output_section != NULL
4031 && ! bfd_is_abs_section (sym_sec))
4035 osec = sym_sec->output_section;
4036 indx = elf_section_data (osec)->dynindx;
4039 osec = htab->etab.text_index_section;
4040 indx = elf_section_data (osec)->dynindx;
4042 BFD_ASSERT (indx != 0);
4044 /* We are turning this relocation into one
4045 against a section symbol, so subtract out the
4046 output section's address but not the offset
4047 of the input section in the output section. */
4048 outrel.r_addend -= osec->vma;
4051 outrel.r_info = ELF32_R_INFO (indx, r_type);
4053 sreloc = elf_section_data (input_section)->sreloc;
4057 loc = sreloc->contents;
4058 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela);
4059 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
4063 case R_PARISC_TLS_LDM21L:
4064 case R_PARISC_TLS_LDM14R:
4068 off = htab->tls_ldm_got.offset;
4073 Elf_Internal_Rela outrel;
4076 outrel.r_offset = (off
4077 + htab->sgot->output_section->vma
4078 + htab->sgot->output_offset);
4079 outrel.r_addend = 0;
4080 outrel.r_info = ELF32_R_INFO (0, R_PARISC_TLS_DTPMOD32);
4081 loc = htab->srelgot->contents;
4082 loc += htab->srelgot->reloc_count++ * sizeof (Elf32_External_Rela);
4084 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
4085 htab->tls_ldm_got.offset |= 1;
4088 /* Add the base of the GOT to the relocation value. */
4090 + htab->sgot->output_offset
4091 + htab->sgot->output_section->vma);
4096 case R_PARISC_TLS_LDO21L:
4097 case R_PARISC_TLS_LDO14R:
4098 relocation -= dtpoff_base (info);
4101 case R_PARISC_TLS_GD21L:
4102 case R_PARISC_TLS_GD14R:
4103 case R_PARISC_TLS_IE21L:
4104 case R_PARISC_TLS_IE14R:
4114 dyn = htab->etab.dynamic_sections_created;
4116 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn,
4117 bfd_link_pic (info),
4119 && (!bfd_link_pic (info)
4120 || !SYMBOL_REFERENCES_LOCAL (info, &hh->eh)))
4122 indx = hh->eh.dynindx;
4124 off = hh->eh.got.offset;
4125 tls_type = hh->tls_type;
4129 off = local_got_offsets[r_symndx];
4130 tls_type = hppa_elf_local_got_tls_type (input_bfd)[r_symndx];
4133 if (tls_type == GOT_UNKNOWN)
4140 bfd_boolean need_relocs = FALSE;
4141 Elf_Internal_Rela outrel;
4142 bfd_byte *loc = NULL;
4145 /* The GOT entries have not been initialized yet. Do it
4146 now, and emit any relocations. If both an IE GOT and a
4147 GD GOT are necessary, we emit the GD first. */
4149 if ((bfd_link_pic (info) || indx != 0)
4151 || ELF_ST_VISIBILITY (hh->eh.other) == STV_DEFAULT
4152 || hh->eh.root.type != bfd_link_hash_undefweak))
4155 loc = htab->srelgot->contents;
4156 /* FIXME (CAO): Should this be reloc_count++ ? */
4157 loc += htab->srelgot->reloc_count * sizeof (Elf32_External_Rela);
4160 if (tls_type & GOT_TLS_GD)
4164 outrel.r_offset = (cur_off
4165 + htab->sgot->output_section->vma
4166 + htab->sgot->output_offset);
4167 outrel.r_info = ELF32_R_INFO (indx,R_PARISC_TLS_DTPMOD32);
4168 outrel.r_addend = 0;
4169 bfd_put_32 (output_bfd, 0, htab->sgot->contents + cur_off);
4170 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
4171 htab->srelgot->reloc_count++;
4172 loc += sizeof (Elf32_External_Rela);
4175 bfd_put_32 (output_bfd, relocation - dtpoff_base (info),
4176 htab->sgot->contents + cur_off + 4);
4179 bfd_put_32 (output_bfd, 0,
4180 htab->sgot->contents + cur_off + 4);
4181 outrel.r_info = ELF32_R_INFO (indx, R_PARISC_TLS_DTPOFF32);
4182 outrel.r_offset += 4;
4183 bfd_elf32_swap_reloca_out (output_bfd, &outrel,loc);
4184 htab->srelgot->reloc_count++;
4185 loc += sizeof (Elf32_External_Rela);
4190 /* If we are not emitting relocations for a
4191 general dynamic reference, then we must be in a
4192 static link or an executable link with the
4193 symbol binding locally. Mark it as belonging
4194 to module 1, the executable. */
4195 bfd_put_32 (output_bfd, 1,
4196 htab->sgot->contents + cur_off);
4197 bfd_put_32 (output_bfd, relocation - dtpoff_base (info),
4198 htab->sgot->contents + cur_off + 4);
4205 if (tls_type & GOT_TLS_IE)
4209 outrel.r_offset = (cur_off
4210 + htab->sgot->output_section->vma
4211 + htab->sgot->output_offset);
4212 outrel.r_info = ELF32_R_INFO (indx, R_PARISC_TLS_TPREL32);
4215 outrel.r_addend = relocation - dtpoff_base (info);
4217 outrel.r_addend = 0;
4219 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
4220 htab->srelgot->reloc_count++;
4221 loc += sizeof (Elf32_External_Rela);
4224 bfd_put_32 (output_bfd, tpoff (info, relocation),
4225 htab->sgot->contents + cur_off);
4231 hh->eh.got.offset |= 1;
4233 local_got_offsets[r_symndx] |= 1;
4236 if ((tls_type & GOT_TLS_GD)
4237 && r_type != R_PARISC_TLS_GD21L
4238 && r_type != R_PARISC_TLS_GD14R)
4239 off += 2 * GOT_ENTRY_SIZE;
4241 /* Add the base of the GOT to the relocation value. */
4243 + htab->sgot->output_offset
4244 + htab->sgot->output_section->vma);
4249 case R_PARISC_TLS_LE21L:
4250 case R_PARISC_TLS_LE14R:
4252 relocation = tpoff (info, relocation);
4261 rstatus = final_link_relocate (input_section, contents, rela, relocation,
4262 htab, sym_sec, hh, info);
4264 if (rstatus == bfd_reloc_ok)
4268 sym_name = hh_name (hh);
4271 sym_name = bfd_elf_string_from_elf_section (input_bfd,
4272 symtab_hdr->sh_link,
4274 if (sym_name == NULL)
4276 if (*sym_name == '\0')
4277 sym_name = bfd_section_name (input_bfd, sym_sec);
4280 howto = elf_hppa_howto_table + r_type;
4282 if (rstatus == bfd_reloc_undefined || rstatus == bfd_reloc_notsupported)
4284 if (rstatus == bfd_reloc_notsupported || !warned_undef)
4286 (*_bfd_error_handler)
4287 (_("%B(%A+0x%lx): cannot handle %s for %s"),
4290 (long) rela->r_offset,
4293 bfd_set_error (bfd_error_bad_value);
4299 if (!((*info->callbacks->reloc_overflow)
4300 (info, (hh ? &hh->eh.root : NULL), sym_name, howto->name,
4301 (bfd_vma) 0, input_bfd, input_section, rela->r_offset)))
4309 /* Finish up dynamic symbol handling. We set the contents of various
4310 dynamic sections here. */
4313 elf32_hppa_finish_dynamic_symbol (bfd *output_bfd,
4314 struct bfd_link_info *info,
4315 struct elf_link_hash_entry *eh,
4316 Elf_Internal_Sym *sym)
4318 struct elf32_hppa_link_hash_table *htab;
4319 Elf_Internal_Rela rela;
4322 htab = hppa_link_hash_table (info);
4326 if (eh->plt.offset != (bfd_vma) -1)
4330 if (eh->plt.offset & 1)
4333 /* This symbol has an entry in the procedure linkage table. Set
4336 The format of a plt entry is
4341 if (eh->root.type == bfd_link_hash_defined
4342 || eh->root.type == bfd_link_hash_defweak)
4344 value = eh->root.u.def.value;
4345 if (eh->root.u.def.section->output_section != NULL)
4346 value += (eh->root.u.def.section->output_offset
4347 + eh->root.u.def.section->output_section->vma);
4350 /* Create a dynamic IPLT relocation for this entry. */
4351 rela.r_offset = (eh->plt.offset
4352 + htab->splt->output_offset
4353 + htab->splt->output_section->vma);
4354 if (eh->dynindx != -1)
4356 rela.r_info = ELF32_R_INFO (eh->dynindx, R_PARISC_IPLT);
4361 /* This symbol has been marked to become local, and is
4362 used by a plabel so must be kept in the .plt. */
4363 rela.r_info = ELF32_R_INFO (0, R_PARISC_IPLT);
4364 rela.r_addend = value;
4367 loc = htab->srelplt->contents;
4368 loc += htab->srelplt->reloc_count++ * sizeof (Elf32_External_Rela);
4369 bfd_elf32_swap_reloca_out (htab->splt->output_section->owner, &rela, loc);
4371 if (!eh->def_regular)
4373 /* Mark the symbol as undefined, rather than as defined in
4374 the .plt section. Leave the value alone. */
4375 sym->st_shndx = SHN_UNDEF;
4379 if (eh->got.offset != (bfd_vma) -1
4380 && (hppa_elf_hash_entry (eh)->tls_type & GOT_TLS_GD) == 0
4381 && (hppa_elf_hash_entry (eh)->tls_type & GOT_TLS_IE) == 0)
4383 /* This symbol has an entry in the global offset table. Set it
4386 rela.r_offset = ((eh->got.offset &~ (bfd_vma) 1)
4387 + htab->sgot->output_offset
4388 + htab->sgot->output_section->vma);
4390 /* If this is a -Bsymbolic link and the symbol is defined
4391 locally or was forced to be local because of a version file,
4392 we just want to emit a RELATIVE reloc. The entry in the
4393 global offset table will already have been initialized in the
4394 relocate_section function. */
4395 if (bfd_link_pic (info)
4396 && (SYMBOLIC_BIND (info, eh) || eh->dynindx == -1)
4399 rela.r_info = ELF32_R_INFO (0, R_PARISC_DIR32);
4400 rela.r_addend = (eh->root.u.def.value
4401 + eh->root.u.def.section->output_offset
4402 + eh->root.u.def.section->output_section->vma);
4406 if ((eh->got.offset & 1) != 0)
4409 bfd_put_32 (output_bfd, 0, htab->sgot->contents + (eh->got.offset & ~1));
4410 rela.r_info = ELF32_R_INFO (eh->dynindx, R_PARISC_DIR32);
4414 loc = htab->srelgot->contents;
4415 loc += htab->srelgot->reloc_count++ * sizeof (Elf32_External_Rela);
4416 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
4423 /* This symbol needs a copy reloc. Set it up. */
4425 if (! (eh->dynindx != -1
4426 && (eh->root.type == bfd_link_hash_defined
4427 || eh->root.type == bfd_link_hash_defweak)))
4430 sec = htab->srelbss;
4432 rela.r_offset = (eh->root.u.def.value
4433 + eh->root.u.def.section->output_offset
4434 + eh->root.u.def.section->output_section->vma);
4436 rela.r_info = ELF32_R_INFO (eh->dynindx, R_PARISC_COPY);
4437 loc = sec->contents + sec->reloc_count++ * sizeof (Elf32_External_Rela);
4438 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
4441 /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. */
4442 if (eh == htab->etab.hdynamic || eh == htab->etab.hgot)
4444 sym->st_shndx = SHN_ABS;
4450 /* Used to decide how to sort relocs in an optimal manner for the
4451 dynamic linker, before writing them out. */
4453 static enum elf_reloc_type_class
4454 elf32_hppa_reloc_type_class (const struct bfd_link_info *info ATTRIBUTE_UNUSED,
4455 const asection *rel_sec ATTRIBUTE_UNUSED,
4456 const Elf_Internal_Rela *rela)
4458 /* Handle TLS relocs first; we don't want them to be marked
4459 relative by the "if (ELF32_R_SYM (rela->r_info) == STN_UNDEF)"
4461 switch ((int) ELF32_R_TYPE (rela->r_info))
4463 case R_PARISC_TLS_DTPMOD32:
4464 case R_PARISC_TLS_DTPOFF32:
4465 case R_PARISC_TLS_TPREL32:
4466 return reloc_class_normal;
4469 if (ELF32_R_SYM (rela->r_info) == STN_UNDEF)
4470 return reloc_class_relative;
4472 switch ((int) ELF32_R_TYPE (rela->r_info))
4475 return reloc_class_plt;
4477 return reloc_class_copy;
4479 return reloc_class_normal;
4483 /* Finish up the dynamic sections. */
4486 elf32_hppa_finish_dynamic_sections (bfd *output_bfd,
4487 struct bfd_link_info *info)
4490 struct elf32_hppa_link_hash_table *htab;
4494 htab = hppa_link_hash_table (info);
4498 dynobj = htab->etab.dynobj;
4501 /* A broken linker script might have discarded the dynamic sections.
4502 Catch this here so that we do not seg-fault later on. */
4503 if (sgot != NULL && bfd_is_abs_section (sgot->output_section))
4506 sdyn = bfd_get_linker_section (dynobj, ".dynamic");
4508 if (htab->etab.dynamic_sections_created)
4510 Elf32_External_Dyn *dyncon, *dynconend;
4515 dyncon = (Elf32_External_Dyn *) sdyn->contents;
4516 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
4517 for (; dyncon < dynconend; dyncon++)
4519 Elf_Internal_Dyn dyn;
4522 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
4530 /* Use PLTGOT to set the GOT register. */
4531 dyn.d_un.d_ptr = elf_gp (output_bfd);
4536 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
4541 dyn.d_un.d_val = s->size;
4545 /* Don't count procedure linkage table relocs in the
4546 overall reloc count. */
4550 dyn.d_un.d_val -= s->size;
4554 /* We may not be using the standard ELF linker script.
4555 If .rela.plt is the first .rela section, we adjust
4556 DT_RELA to not include it. */
4560 if (dyn.d_un.d_ptr != s->output_section->vma + s->output_offset)
4562 dyn.d_un.d_ptr += s->size;
4566 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
4570 if (sgot != NULL && sgot->size != 0)
4572 /* Fill in the first entry in the global offset table.
4573 We use it to point to our dynamic section, if we have one. */
4574 bfd_put_32 (output_bfd,
4575 sdyn ? sdyn->output_section->vma + sdyn->output_offset : 0,
4578 /* The second entry is reserved for use by the dynamic linker. */
4579 memset (sgot->contents + GOT_ENTRY_SIZE, 0, GOT_ENTRY_SIZE);
4581 /* Set .got entry size. */
4582 elf_section_data (sgot->output_section)
4583 ->this_hdr.sh_entsize = GOT_ENTRY_SIZE;
4586 if (htab->splt != NULL && htab->splt->size != 0)
4588 /* Set plt entry size to 0 instead of PLT_ENTRY_SIZE, since we add the
4589 plt stubs and as such the section does not hold a table of fixed-size
4591 elf_section_data (htab->splt->output_section)->this_hdr.sh_entsize = 0;
4593 if (htab->need_plt_stub)
4595 /* Set up the .plt stub. */
4596 memcpy (htab->splt->contents
4597 + htab->splt->size - sizeof (plt_stub),
4598 plt_stub, sizeof (plt_stub));
4600 if ((htab->splt->output_offset
4601 + htab->splt->output_section->vma
4603 != (sgot->output_offset
4604 + sgot->output_section->vma))
4606 (*_bfd_error_handler)
4607 (_(".got section not immediately after .plt section"));
4616 /* Called when writing out an object file to decide the type of a
4619 elf32_hppa_elf_get_symbol_type (Elf_Internal_Sym *elf_sym, int type)
4621 if (ELF_ST_TYPE (elf_sym->st_info) == STT_PARISC_MILLI)
4622 return STT_PARISC_MILLI;
4627 /* Misc BFD support code. */
4628 #define bfd_elf32_bfd_is_local_label_name elf_hppa_is_local_label_name
4629 #define bfd_elf32_bfd_reloc_type_lookup elf_hppa_reloc_type_lookup
4630 #define bfd_elf32_bfd_reloc_name_lookup elf_hppa_reloc_name_lookup
4631 #define elf_info_to_howto elf_hppa_info_to_howto
4632 #define elf_info_to_howto_rel elf_hppa_info_to_howto_rel
4634 /* Stuff for the BFD linker. */
4635 #define bfd_elf32_bfd_final_link elf32_hppa_final_link
4636 #define bfd_elf32_bfd_link_hash_table_create elf32_hppa_link_hash_table_create
4637 #define elf_backend_adjust_dynamic_symbol elf32_hppa_adjust_dynamic_symbol
4638 #define elf_backend_copy_indirect_symbol elf32_hppa_copy_indirect_symbol
4639 #define elf_backend_check_relocs elf32_hppa_check_relocs
4640 #define elf_backend_create_dynamic_sections elf32_hppa_create_dynamic_sections
4641 #define elf_backend_fake_sections elf_hppa_fake_sections
4642 #define elf_backend_relocate_section elf32_hppa_relocate_section
4643 #define elf_backend_hide_symbol elf32_hppa_hide_symbol
4644 #define elf_backend_finish_dynamic_symbol elf32_hppa_finish_dynamic_symbol
4645 #define elf_backend_finish_dynamic_sections elf32_hppa_finish_dynamic_sections
4646 #define elf_backend_size_dynamic_sections elf32_hppa_size_dynamic_sections
4647 #define elf_backend_init_index_section _bfd_elf_init_1_index_section
4648 #define elf_backend_gc_mark_hook elf32_hppa_gc_mark_hook
4649 #define elf_backend_gc_sweep_hook elf32_hppa_gc_sweep_hook
4650 #define elf_backend_grok_prstatus elf32_hppa_grok_prstatus
4651 #define elf_backend_grok_psinfo elf32_hppa_grok_psinfo
4652 #define elf_backend_object_p elf32_hppa_object_p
4653 #define elf_backend_final_write_processing elf_hppa_final_write_processing
4654 #define elf_backend_get_symbol_type elf32_hppa_elf_get_symbol_type
4655 #define elf_backend_reloc_type_class elf32_hppa_reloc_type_class
4656 #define elf_backend_action_discarded elf_hppa_action_discarded
4658 #define elf_backend_can_gc_sections 1
4659 #define elf_backend_can_refcount 1
4660 #define elf_backend_plt_alignment 2
4661 #define elf_backend_want_got_plt 0
4662 #define elf_backend_plt_readonly 0
4663 #define elf_backend_want_plt_sym 0
4664 #define elf_backend_got_header_size 8
4665 #define elf_backend_rela_normal 1
4667 #define TARGET_BIG_SYM hppa_elf32_vec
4668 #define TARGET_BIG_NAME "elf32-hppa"
4669 #define ELF_ARCH bfd_arch_hppa
4670 #define ELF_TARGET_ID HPPA32_ELF_DATA
4671 #define ELF_MACHINE_CODE EM_PARISC
4672 #define ELF_MAXPAGESIZE 0x1000
4673 #define ELF_OSABI ELFOSABI_HPUX
4674 #define elf32_bed elf32_hppa_hpux_bed
4676 #include "elf32-target.h"
4678 #undef TARGET_BIG_SYM
4679 #define TARGET_BIG_SYM hppa_elf32_linux_vec
4680 #undef TARGET_BIG_NAME
4681 #define TARGET_BIG_NAME "elf32-hppa-linux"
4683 #define ELF_OSABI ELFOSABI_GNU
4685 #define elf32_bed elf32_hppa_linux_bed
4687 #include "elf32-target.h"
4689 #undef TARGET_BIG_SYM
4690 #define TARGET_BIG_SYM hppa_elf32_nbsd_vec
4691 #undef TARGET_BIG_NAME
4692 #define TARGET_BIG_NAME "elf32-hppa-netbsd"
4694 #define ELF_OSABI ELFOSABI_NETBSD
4696 #define elf32_bed elf32_hppa_netbsd_bed
4698 #include "elf32-target.h"