1 /* BFD back-end for HP PA-RISC ELF files.
2 Copyright (C) 1990-2016 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 /* Used during a final link to store the base of the text and data
278 segments so that we can perform SEGREL relocations. */
279 bfd_vma text_segment_base;
280 bfd_vma data_segment_base;
282 /* Whether we support multiple sub-spaces for shared libs. */
283 unsigned int multi_subspace:1;
285 /* Flags set when various size branches are detected. Used to
286 select suitable defaults for the stub group size. */
287 unsigned int has_12bit_branch:1;
288 unsigned int has_17bit_branch:1;
289 unsigned int has_22bit_branch:1;
291 /* Set if we need a .plt stub to support lazy dynamic linking. */
292 unsigned int need_plt_stub:1;
294 /* Small local sym cache. */
295 struct sym_cache sym_cache;
297 /* Data for LDM relocations. */
300 bfd_signed_vma refcount;
305 /* Various hash macros and functions. */
306 #define hppa_link_hash_table(p) \
307 (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
308 == HPPA32_ELF_DATA ? ((struct elf32_hppa_link_hash_table *) ((p)->hash)) : NULL)
310 #define hppa_elf_hash_entry(ent) \
311 ((struct elf32_hppa_link_hash_entry *)(ent))
313 #define hppa_stub_hash_entry(ent) \
314 ((struct elf32_hppa_stub_hash_entry *)(ent))
316 #define hppa_stub_hash_lookup(table, string, create, copy) \
317 ((struct elf32_hppa_stub_hash_entry *) \
318 bfd_hash_lookup ((table), (string), (create), (copy)))
320 #define hppa_elf_local_got_tls_type(abfd) \
321 ((char *)(elf_local_got_offsets (abfd) + (elf_tdata (abfd)->symtab_hdr.sh_info * 2)))
323 #define hh_name(hh) \
324 (hh ? hh->eh.root.root.string : "<undef>")
326 #define eh_name(eh) \
327 (eh ? eh->root.root.string : "<undef>")
329 /* Assorted hash table functions. */
331 /* Initialize an entry in the stub hash table. */
333 static struct bfd_hash_entry *
334 stub_hash_newfunc (struct bfd_hash_entry *entry,
335 struct bfd_hash_table *table,
338 /* Allocate the structure if it has not already been allocated by a
342 entry = bfd_hash_allocate (table,
343 sizeof (struct elf32_hppa_stub_hash_entry));
348 /* Call the allocation method of the superclass. */
349 entry = bfd_hash_newfunc (entry, table, string);
352 struct elf32_hppa_stub_hash_entry *hsh;
354 /* Initialize the local fields. */
355 hsh = hppa_stub_hash_entry (entry);
356 hsh->stub_sec = NULL;
357 hsh->stub_offset = 0;
358 hsh->target_value = 0;
359 hsh->target_section = NULL;
360 hsh->stub_type = hppa_stub_long_branch;
368 /* Initialize an entry in the link hash table. */
370 static struct bfd_hash_entry *
371 hppa_link_hash_newfunc (struct bfd_hash_entry *entry,
372 struct bfd_hash_table *table,
375 /* Allocate the structure if it has not already been allocated by a
379 entry = bfd_hash_allocate (table,
380 sizeof (struct elf32_hppa_link_hash_entry));
385 /* Call the allocation method of the superclass. */
386 entry = _bfd_elf_link_hash_newfunc (entry, table, string);
389 struct elf32_hppa_link_hash_entry *hh;
391 /* Initialize the local fields. */
392 hh = hppa_elf_hash_entry (entry);
393 hh->hsh_cache = NULL;
394 hh->dyn_relocs = NULL;
396 hh->tls_type = GOT_UNKNOWN;
402 /* Free the derived linker hash table. */
405 elf32_hppa_link_hash_table_free (bfd *obfd)
407 struct elf32_hppa_link_hash_table *htab
408 = (struct elf32_hppa_link_hash_table *) obfd->link.hash;
410 bfd_hash_table_free (&htab->bstab);
411 _bfd_elf_link_hash_table_free (obfd);
414 /* Create the derived linker hash table. The PA ELF port uses the derived
415 hash table to keep information specific to the PA ELF linker (without
416 using static variables). */
418 static struct bfd_link_hash_table *
419 elf32_hppa_link_hash_table_create (bfd *abfd)
421 struct elf32_hppa_link_hash_table *htab;
422 bfd_size_type amt = sizeof (*htab);
424 htab = bfd_zmalloc (amt);
428 if (!_bfd_elf_link_hash_table_init (&htab->etab, abfd, hppa_link_hash_newfunc,
429 sizeof (struct elf32_hppa_link_hash_entry),
436 /* Init the stub hash table too. */
437 if (!bfd_hash_table_init (&htab->bstab, stub_hash_newfunc,
438 sizeof (struct elf32_hppa_stub_hash_entry)))
440 _bfd_elf_link_hash_table_free (abfd);
443 htab->etab.root.hash_table_free = elf32_hppa_link_hash_table_free;
445 htab->text_segment_base = (bfd_vma) -1;
446 htab->data_segment_base = (bfd_vma) -1;
447 return &htab->etab.root;
450 /* Initialize the linker stubs BFD so that we can use it for linker
451 created dynamic sections. */
454 elf32_hppa_init_stub_bfd (bfd *abfd, struct bfd_link_info *info)
456 struct elf32_hppa_link_hash_table *htab = hppa_link_hash_table (info);
458 elf_elfheader (abfd)->e_ident[EI_CLASS] = ELFCLASS32;
459 htab->etab.dynobj = abfd;
462 /* Build a name for an entry in the stub hash table. */
465 hppa_stub_name (const asection *input_section,
466 const asection *sym_sec,
467 const struct elf32_hppa_link_hash_entry *hh,
468 const Elf_Internal_Rela *rela)
475 len = 8 + 1 + strlen (hh_name (hh)) + 1 + 8 + 1;
476 stub_name = bfd_malloc (len);
477 if (stub_name != NULL)
478 sprintf (stub_name, "%08x_%s+%x",
479 input_section->id & 0xffffffff,
481 (int) rela->r_addend & 0xffffffff);
485 len = 8 + 1 + 8 + 1 + 8 + 1 + 8 + 1;
486 stub_name = bfd_malloc (len);
487 if (stub_name != NULL)
488 sprintf (stub_name, "%08x_%x:%x+%x",
489 input_section->id & 0xffffffff,
490 sym_sec->id & 0xffffffff,
491 (int) ELF32_R_SYM (rela->r_info) & 0xffffffff,
492 (int) rela->r_addend & 0xffffffff);
497 /* Look up an entry in the stub hash. Stub entries are cached because
498 creating the stub name takes a bit of time. */
500 static struct elf32_hppa_stub_hash_entry *
501 hppa_get_stub_entry (const asection *input_section,
502 const asection *sym_sec,
503 struct elf32_hppa_link_hash_entry *hh,
504 const Elf_Internal_Rela *rela,
505 struct elf32_hppa_link_hash_table *htab)
507 struct elf32_hppa_stub_hash_entry *hsh_entry;
508 const asection *id_sec;
510 /* If this input section is part of a group of sections sharing one
511 stub section, then use the id of the first section in the group.
512 Stub names need to include a section id, as there may well be
513 more than one stub used to reach say, printf, and we need to
514 distinguish between them. */
515 id_sec = htab->stub_group[input_section->id].link_sec;
517 if (hh != NULL && hh->hsh_cache != NULL
518 && hh->hsh_cache->hh == hh
519 && hh->hsh_cache->id_sec == id_sec)
521 hsh_entry = hh->hsh_cache;
527 stub_name = hppa_stub_name (id_sec, sym_sec, hh, rela);
528 if (stub_name == NULL)
531 hsh_entry = hppa_stub_hash_lookup (&htab->bstab,
532 stub_name, FALSE, FALSE);
534 hh->hsh_cache = hsh_entry;
542 /* Add a new stub entry to the stub hash. Not all fields of the new
543 stub entry are initialised. */
545 static struct elf32_hppa_stub_hash_entry *
546 hppa_add_stub (const char *stub_name,
548 struct elf32_hppa_link_hash_table *htab)
552 struct elf32_hppa_stub_hash_entry *hsh;
554 link_sec = htab->stub_group[section->id].link_sec;
555 stub_sec = htab->stub_group[section->id].stub_sec;
556 if (stub_sec == NULL)
558 stub_sec = htab->stub_group[link_sec->id].stub_sec;
559 if (stub_sec == NULL)
565 namelen = strlen (link_sec->name);
566 len = namelen + sizeof (STUB_SUFFIX);
567 s_name = bfd_alloc (htab->stub_bfd, len);
571 memcpy (s_name, link_sec->name, namelen);
572 memcpy (s_name + namelen, STUB_SUFFIX, sizeof (STUB_SUFFIX));
573 stub_sec = (*htab->add_stub_section) (s_name, link_sec);
574 if (stub_sec == NULL)
576 htab->stub_group[link_sec->id].stub_sec = stub_sec;
578 htab->stub_group[section->id].stub_sec = stub_sec;
581 /* Enter this entry into the linker stub hash table. */
582 hsh = hppa_stub_hash_lookup (&htab->bstab, stub_name,
586 /* xgettext:c-format */
587 _bfd_error_handler (_("%B: cannot create stub entry %s"),
588 section->owner, stub_name);
592 hsh->stub_sec = stub_sec;
593 hsh->stub_offset = 0;
594 hsh->id_sec = link_sec;
598 /* Determine the type of stub needed, if any, for a call. */
600 static enum elf32_hppa_stub_type
601 hppa_type_of_stub (asection *input_sec,
602 const Elf_Internal_Rela *rela,
603 struct elf32_hppa_link_hash_entry *hh,
605 struct bfd_link_info *info)
608 bfd_vma branch_offset;
609 bfd_vma max_branch_offset;
613 && hh->eh.plt.offset != (bfd_vma) -1
614 && hh->eh.dynindx != -1
616 && (bfd_link_pic (info)
617 || !hh->eh.def_regular
618 || hh->eh.root.type == bfd_link_hash_defweak))
620 /* We need an import stub. Decide between hppa_stub_import
621 and hppa_stub_import_shared later. */
622 return hppa_stub_import;
625 /* Determine where the call point is. */
626 location = (input_sec->output_offset
627 + input_sec->output_section->vma
630 branch_offset = destination - location - 8;
631 r_type = ELF32_R_TYPE (rela->r_info);
633 /* Determine if a long branch stub is needed. parisc branch offsets
634 are relative to the second instruction past the branch, ie. +8
635 bytes on from the branch instruction location. The offset is
636 signed and counts in units of 4 bytes. */
637 if (r_type == (unsigned int) R_PARISC_PCREL17F)
638 max_branch_offset = (1 << (17 - 1)) << 2;
640 else if (r_type == (unsigned int) R_PARISC_PCREL12F)
641 max_branch_offset = (1 << (12 - 1)) << 2;
643 else /* R_PARISC_PCREL22F. */
644 max_branch_offset = (1 << (22 - 1)) << 2;
646 if (branch_offset + max_branch_offset >= 2*max_branch_offset)
647 return hppa_stub_long_branch;
649 return hppa_stub_none;
652 /* Build one linker stub as defined by the stub hash table entry GEN_ENTRY.
653 IN_ARG contains the link info pointer. */
655 #define LDIL_R1 0x20200000 /* ldil LR'XXX,%r1 */
656 #define BE_SR4_R1 0xe0202002 /* be,n RR'XXX(%sr4,%r1) */
658 #define BL_R1 0xe8200000 /* b,l .+8,%r1 */
659 #define ADDIL_R1 0x28200000 /* addil LR'XXX,%r1,%r1 */
660 #define DEPI_R1 0xd4201c1e /* depi 0,31,2,%r1 */
662 #define ADDIL_DP 0x2b600000 /* addil LR'XXX,%dp,%r1 */
663 #define LDW_R1_R21 0x48350000 /* ldw RR'XXX(%sr0,%r1),%r21 */
664 #define BV_R0_R21 0xeaa0c000 /* bv %r0(%r21) */
665 #define LDW_R1_R19 0x48330000 /* ldw RR'XXX(%sr0,%r1),%r19 */
667 #define ADDIL_R19 0x2a600000 /* addil LR'XXX,%r19,%r1 */
668 #define LDW_R1_DP 0x483b0000 /* ldw RR'XXX(%sr0,%r1),%dp */
670 #define LDSID_R21_R1 0x02a010a1 /* ldsid (%sr0,%r21),%r1 */
671 #define MTSP_R1 0x00011820 /* mtsp %r1,%sr0 */
672 #define BE_SR0_R21 0xe2a00000 /* be 0(%sr0,%r21) */
673 #define STW_RP 0x6bc23fd1 /* stw %rp,-24(%sr0,%sp) */
675 #define BL22_RP 0xe800a002 /* b,l,n XXX,%rp */
676 #define BL_RP 0xe8400002 /* b,l,n XXX,%rp */
677 #define NOP 0x08000240 /* nop */
678 #define LDW_RP 0x4bc23fd1 /* ldw -24(%sr0,%sp),%rp */
679 #define LDSID_RP_R1 0x004010a1 /* ldsid (%sr0,%rp),%r1 */
680 #define BE_SR0_RP 0xe0400002 /* be,n 0(%sr0,%rp) */
687 #define LDW_R1_DLT LDW_R1_R19
689 #define LDW_R1_DLT LDW_R1_DP
693 hppa_build_one_stub (struct bfd_hash_entry *bh, void *in_arg)
695 struct elf32_hppa_stub_hash_entry *hsh;
696 struct bfd_link_info *info;
697 struct elf32_hppa_link_hash_table *htab;
707 /* Massage our args to the form they really have. */
708 hsh = hppa_stub_hash_entry (bh);
709 info = (struct bfd_link_info *)in_arg;
711 htab = hppa_link_hash_table (info);
715 stub_sec = hsh->stub_sec;
717 /* Make a note of the offset within the stubs for this entry. */
718 hsh->stub_offset = stub_sec->size;
719 loc = stub_sec->contents + hsh->stub_offset;
721 stub_bfd = stub_sec->owner;
723 switch (hsh->stub_type)
725 case hppa_stub_long_branch:
726 /* Create the long branch. A long branch is formed with "ldil"
727 loading the upper bits of the target address into a register,
728 then branching with "be" which adds in the lower bits.
729 The "be" has its delay slot nullified. */
730 sym_value = (hsh->target_value
731 + hsh->target_section->output_offset
732 + hsh->target_section->output_section->vma);
734 val = hppa_field_adjust (sym_value, 0, e_lrsel);
735 insn = hppa_rebuild_insn ((int) LDIL_R1, val, 21);
736 bfd_put_32 (stub_bfd, insn, loc);
738 val = hppa_field_adjust (sym_value, 0, e_rrsel) >> 2;
739 insn = hppa_rebuild_insn ((int) BE_SR4_R1, val, 17);
740 bfd_put_32 (stub_bfd, insn, loc + 4);
745 case hppa_stub_long_branch_shared:
746 /* Branches are relative. This is where we are going to. */
747 sym_value = (hsh->target_value
748 + hsh->target_section->output_offset
749 + hsh->target_section->output_section->vma);
751 /* And this is where we are coming from, more or less. */
752 sym_value -= (hsh->stub_offset
753 + stub_sec->output_offset
754 + stub_sec->output_section->vma);
756 bfd_put_32 (stub_bfd, (bfd_vma) BL_R1, loc);
757 val = hppa_field_adjust (sym_value, (bfd_signed_vma) -8, e_lrsel);
758 insn = hppa_rebuild_insn ((int) ADDIL_R1, val, 21);
759 bfd_put_32 (stub_bfd, insn, loc + 4);
761 val = hppa_field_adjust (sym_value, (bfd_signed_vma) -8, e_rrsel) >> 2;
762 insn = hppa_rebuild_insn ((int) BE_SR4_R1, val, 17);
763 bfd_put_32 (stub_bfd, insn, loc + 8);
767 case hppa_stub_import:
768 case hppa_stub_import_shared:
769 off = hsh->hh->eh.plt.offset;
770 if (off >= (bfd_vma) -2)
773 off &= ~ (bfd_vma) 1;
775 + htab->etab.splt->output_offset
776 + htab->etab.splt->output_section->vma
777 - elf_gp (htab->etab.splt->output_section->owner));
781 if (hsh->stub_type == hppa_stub_import_shared)
784 val = hppa_field_adjust (sym_value, 0, e_lrsel),
785 insn = hppa_rebuild_insn ((int) insn, val, 21);
786 bfd_put_32 (stub_bfd, insn, loc);
788 /* It is critical to use lrsel/rrsel here because we are using
789 two different offsets (+0 and +4) from sym_value. If we use
790 lsel/rsel then with unfortunate sym_values we will round
791 sym_value+4 up to the next 2k block leading to a mis-match
792 between the lsel and rsel value. */
793 val = hppa_field_adjust (sym_value, 0, e_rrsel);
794 insn = hppa_rebuild_insn ((int) LDW_R1_R21, val, 14);
795 bfd_put_32 (stub_bfd, insn, loc + 4);
797 if (htab->multi_subspace)
799 val = hppa_field_adjust (sym_value, (bfd_signed_vma) 4, e_rrsel);
800 insn = hppa_rebuild_insn ((int) LDW_R1_DLT, val, 14);
801 bfd_put_32 (stub_bfd, insn, loc + 8);
803 bfd_put_32 (stub_bfd, (bfd_vma) LDSID_R21_R1, loc + 12);
804 bfd_put_32 (stub_bfd, (bfd_vma) MTSP_R1, loc + 16);
805 bfd_put_32 (stub_bfd, (bfd_vma) BE_SR0_R21, loc + 20);
806 bfd_put_32 (stub_bfd, (bfd_vma) STW_RP, loc + 24);
812 bfd_put_32 (stub_bfd, (bfd_vma) BV_R0_R21, loc + 8);
813 val = hppa_field_adjust (sym_value, (bfd_signed_vma) 4, e_rrsel);
814 insn = hppa_rebuild_insn ((int) LDW_R1_DLT, val, 14);
815 bfd_put_32 (stub_bfd, insn, loc + 12);
822 case hppa_stub_export:
823 /* Branches are relative. This is where we are going to. */
824 sym_value = (hsh->target_value
825 + hsh->target_section->output_offset
826 + hsh->target_section->output_section->vma);
828 /* And this is where we are coming from. */
829 sym_value -= (hsh->stub_offset
830 + stub_sec->output_offset
831 + stub_sec->output_section->vma);
833 if (sym_value - 8 + (1 << (17 + 1)) >= (1 << (17 + 2))
834 && (!htab->has_22bit_branch
835 || sym_value - 8 + (1 << (22 + 1)) >= (1 << (22 + 2))))
838 /* xgettext:c-format */
839 (_("%B(%A+0x%lx): cannot reach %s, recompile with -ffunction-sections"),
840 hsh->target_section->owner,
842 (long) hsh->stub_offset,
843 hsh->bh_root.string);
844 bfd_set_error (bfd_error_bad_value);
848 val = hppa_field_adjust (sym_value, (bfd_signed_vma) -8, e_fsel) >> 2;
849 if (!htab->has_22bit_branch)
850 insn = hppa_rebuild_insn ((int) BL_RP, val, 17);
852 insn = hppa_rebuild_insn ((int) BL22_RP, val, 22);
853 bfd_put_32 (stub_bfd, insn, loc);
855 bfd_put_32 (stub_bfd, (bfd_vma) NOP, loc + 4);
856 bfd_put_32 (stub_bfd, (bfd_vma) LDW_RP, loc + 8);
857 bfd_put_32 (stub_bfd, (bfd_vma) LDSID_RP_R1, loc + 12);
858 bfd_put_32 (stub_bfd, (bfd_vma) MTSP_R1, loc + 16);
859 bfd_put_32 (stub_bfd, (bfd_vma) BE_SR0_RP, loc + 20);
861 /* Point the function symbol at the stub. */
862 hsh->hh->eh.root.u.def.section = stub_sec;
863 hsh->hh->eh.root.u.def.value = stub_sec->size;
873 stub_sec->size += size;
898 /* As above, but don't actually build the stub. Just bump offset so
899 we know stub section sizes. */
902 hppa_size_one_stub (struct bfd_hash_entry *bh, void *in_arg)
904 struct elf32_hppa_stub_hash_entry *hsh;
905 struct elf32_hppa_link_hash_table *htab;
908 /* Massage our args to the form they really have. */
909 hsh = hppa_stub_hash_entry (bh);
912 if (hsh->stub_type == hppa_stub_long_branch)
914 else if (hsh->stub_type == hppa_stub_long_branch_shared)
916 else if (hsh->stub_type == hppa_stub_export)
918 else /* hppa_stub_import or hppa_stub_import_shared. */
920 if (htab->multi_subspace)
926 hsh->stub_sec->size += size;
930 /* Return nonzero if ABFD represents an HPPA ELF32 file.
931 Additionally we set the default architecture and machine. */
934 elf32_hppa_object_p (bfd *abfd)
936 Elf_Internal_Ehdr * i_ehdrp;
939 i_ehdrp = elf_elfheader (abfd);
940 if (strcmp (bfd_get_target (abfd), "elf32-hppa-linux") == 0)
942 /* GCC on hppa-linux produces binaries with OSABI=GNU,
943 but the kernel produces corefiles with OSABI=SysV. */
944 if (i_ehdrp->e_ident[EI_OSABI] != ELFOSABI_GNU &&
945 i_ehdrp->e_ident[EI_OSABI] != ELFOSABI_NONE) /* aka SYSV */
948 else if (strcmp (bfd_get_target (abfd), "elf32-hppa-netbsd") == 0)
950 /* GCC on hppa-netbsd produces binaries with OSABI=NetBSD,
951 but the kernel produces corefiles with OSABI=SysV. */
952 if (i_ehdrp->e_ident[EI_OSABI] != ELFOSABI_NETBSD &&
953 i_ehdrp->e_ident[EI_OSABI] != ELFOSABI_NONE) /* aka SYSV */
958 if (i_ehdrp->e_ident[EI_OSABI] != ELFOSABI_HPUX)
962 flags = i_ehdrp->e_flags;
963 switch (flags & (EF_PARISC_ARCH | EF_PARISC_WIDE))
966 return bfd_default_set_arch_mach (abfd, bfd_arch_hppa, 10);
968 return bfd_default_set_arch_mach (abfd, bfd_arch_hppa, 11);
970 return bfd_default_set_arch_mach (abfd, bfd_arch_hppa, 20);
971 case EFA_PARISC_2_0 | EF_PARISC_WIDE:
972 return bfd_default_set_arch_mach (abfd, bfd_arch_hppa, 25);
977 /* Create the .plt and .got sections, and set up our hash table
978 short-cuts to various dynamic sections. */
981 elf32_hppa_create_dynamic_sections (bfd *abfd, struct bfd_link_info *info)
983 struct elf32_hppa_link_hash_table *htab;
984 struct elf_link_hash_entry *eh;
986 /* Don't try to create the .plt and .got twice. */
987 htab = hppa_link_hash_table (info);
990 if (htab->etab.splt != NULL)
993 /* Call the generic code to do most of the work. */
994 if (! _bfd_elf_create_dynamic_sections (abfd, info))
997 /* hppa-linux needs _GLOBAL_OFFSET_TABLE_ to be visible from the main
998 application, because __canonicalize_funcptr_for_compare needs it. */
999 eh = elf_hash_table (info)->hgot;
1000 eh->forced_local = 0;
1001 eh->other = STV_DEFAULT;
1002 return bfd_elf_link_record_dynamic_symbol (info, eh);
1005 /* Copy the extra info we tack onto an elf_link_hash_entry. */
1008 elf32_hppa_copy_indirect_symbol (struct bfd_link_info *info,
1009 struct elf_link_hash_entry *eh_dir,
1010 struct elf_link_hash_entry *eh_ind)
1012 struct elf32_hppa_link_hash_entry *hh_dir, *hh_ind;
1014 hh_dir = hppa_elf_hash_entry (eh_dir);
1015 hh_ind = hppa_elf_hash_entry (eh_ind);
1017 if (hh_ind->dyn_relocs != NULL)
1019 if (hh_dir->dyn_relocs != NULL)
1021 struct elf32_hppa_dyn_reloc_entry **hdh_pp;
1022 struct elf32_hppa_dyn_reloc_entry *hdh_p;
1024 /* Add reloc counts against the indirect sym to the direct sym
1025 list. Merge any entries against the same section. */
1026 for (hdh_pp = &hh_ind->dyn_relocs; (hdh_p = *hdh_pp) != NULL; )
1028 struct elf32_hppa_dyn_reloc_entry *hdh_q;
1030 for (hdh_q = hh_dir->dyn_relocs;
1032 hdh_q = hdh_q->hdh_next)
1033 if (hdh_q->sec == hdh_p->sec)
1035 #if RELATIVE_DYNRELOCS
1036 hdh_q->relative_count += hdh_p->relative_count;
1038 hdh_q->count += hdh_p->count;
1039 *hdh_pp = hdh_p->hdh_next;
1043 hdh_pp = &hdh_p->hdh_next;
1045 *hdh_pp = hh_dir->dyn_relocs;
1048 hh_dir->dyn_relocs = hh_ind->dyn_relocs;
1049 hh_ind->dyn_relocs = NULL;
1052 if (ELIMINATE_COPY_RELOCS
1053 && eh_ind->root.type != bfd_link_hash_indirect
1054 && eh_dir->dynamic_adjusted)
1056 /* If called to transfer flags for a weakdef during processing
1057 of elf_adjust_dynamic_symbol, don't copy non_got_ref.
1058 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
1059 if (eh_dir->versioned != versioned_hidden)
1060 eh_dir->ref_dynamic |= eh_ind->ref_dynamic;
1061 eh_dir->ref_regular |= eh_ind->ref_regular;
1062 eh_dir->ref_regular_nonweak |= eh_ind->ref_regular_nonweak;
1063 eh_dir->needs_plt |= eh_ind->needs_plt;
1067 if (eh_ind->root.type == bfd_link_hash_indirect)
1069 hh_dir->plabel |= hh_ind->plabel;
1070 hh_dir->tls_type |= hh_ind->tls_type;
1071 hh_ind->tls_type = GOT_UNKNOWN;
1074 _bfd_elf_link_hash_copy_indirect (info, eh_dir, eh_ind);
1079 elf32_hppa_optimized_tls_reloc (struct bfd_link_info *info ATTRIBUTE_UNUSED,
1080 int r_type, int is_local ATTRIBUTE_UNUSED)
1082 /* For now we don't support linker optimizations. */
1086 /* Return a pointer to the local GOT, PLT and TLS reference counts
1087 for ABFD. Returns NULL if the storage allocation fails. */
1089 static bfd_signed_vma *
1090 hppa32_elf_local_refcounts (bfd *abfd)
1092 Elf_Internal_Shdr *symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
1093 bfd_signed_vma *local_refcounts;
1095 local_refcounts = elf_local_got_refcounts (abfd);
1096 if (local_refcounts == NULL)
1100 /* Allocate space for local GOT and PLT reference
1101 counts. Done this way to save polluting elf_obj_tdata
1102 with another target specific pointer. */
1103 size = symtab_hdr->sh_info;
1104 size *= 2 * sizeof (bfd_signed_vma);
1105 /* Add in space to store the local GOT TLS types. */
1106 size += symtab_hdr->sh_info;
1107 local_refcounts = bfd_zalloc (abfd, size);
1108 if (local_refcounts == NULL)
1110 elf_local_got_refcounts (abfd) = local_refcounts;
1111 memset (hppa_elf_local_got_tls_type (abfd), GOT_UNKNOWN,
1112 symtab_hdr->sh_info);
1114 return local_refcounts;
1118 /* Look through the relocs for a section during the first phase, and
1119 calculate needed space in the global offset table, procedure linkage
1120 table, and dynamic reloc sections. At this point we haven't
1121 necessarily read all the input files. */
1124 elf32_hppa_check_relocs (bfd *abfd,
1125 struct bfd_link_info *info,
1127 const Elf_Internal_Rela *relocs)
1129 Elf_Internal_Shdr *symtab_hdr;
1130 struct elf_link_hash_entry **eh_syms;
1131 const Elf_Internal_Rela *rela;
1132 const Elf_Internal_Rela *rela_end;
1133 struct elf32_hppa_link_hash_table *htab;
1135 int tls_type = GOT_UNKNOWN, old_tls_type = GOT_UNKNOWN;
1137 if (bfd_link_relocatable (info))
1140 htab = hppa_link_hash_table (info);
1143 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
1144 eh_syms = elf_sym_hashes (abfd);
1147 rela_end = relocs + sec->reloc_count;
1148 for (rela = relocs; rela < rela_end; rela++)
1157 unsigned int r_symndx, r_type;
1158 struct elf32_hppa_link_hash_entry *hh;
1161 r_symndx = ELF32_R_SYM (rela->r_info);
1163 if (r_symndx < symtab_hdr->sh_info)
1167 hh = hppa_elf_hash_entry (eh_syms[r_symndx - symtab_hdr->sh_info]);
1168 while (hh->eh.root.type == bfd_link_hash_indirect
1169 || hh->eh.root.type == bfd_link_hash_warning)
1170 hh = hppa_elf_hash_entry (hh->eh.root.u.i.link);
1172 /* PR15323, ref flags aren't set for references in the same
1174 hh->eh.root.non_ir_ref = 1;
1177 r_type = ELF32_R_TYPE (rela->r_info);
1178 r_type = elf32_hppa_optimized_tls_reloc (info, r_type, hh == NULL);
1182 case R_PARISC_DLTIND14F:
1183 case R_PARISC_DLTIND14R:
1184 case R_PARISC_DLTIND21L:
1185 /* This symbol requires a global offset table entry. */
1186 need_entry = NEED_GOT;
1189 case R_PARISC_PLABEL14R: /* "Official" procedure labels. */
1190 case R_PARISC_PLABEL21L:
1191 case R_PARISC_PLABEL32:
1192 /* If the addend is non-zero, we break badly. */
1193 if (rela->r_addend != 0)
1196 /* If we are creating a shared library, then we need to
1197 create a PLT entry for all PLABELs, because PLABELs with
1198 local symbols may be passed via a pointer to another
1199 object. Additionally, output a dynamic relocation
1200 pointing to the PLT entry.
1202 For executables, the original 32-bit ABI allowed two
1203 different styles of PLABELs (function pointers): For
1204 global functions, the PLABEL word points into the .plt
1205 two bytes past a (function address, gp) pair, and for
1206 local functions the PLABEL points directly at the
1207 function. The magic +2 for the first type allows us to
1208 differentiate between the two. As you can imagine, this
1209 is a real pain when it comes to generating code to call
1210 functions indirectly or to compare function pointers.
1211 We avoid the mess by always pointing a PLABEL into the
1212 .plt, even for local functions. */
1213 need_entry = PLT_PLABEL | NEED_PLT | NEED_DYNREL;
1216 case R_PARISC_PCREL12F:
1217 htab->has_12bit_branch = 1;
1220 case R_PARISC_PCREL17C:
1221 case R_PARISC_PCREL17F:
1222 htab->has_17bit_branch = 1;
1225 case R_PARISC_PCREL22F:
1226 htab->has_22bit_branch = 1;
1228 /* Function calls might need to go through the .plt, and
1229 might require long branch stubs. */
1232 /* We know local syms won't need a .plt entry, and if
1233 they need a long branch stub we can't guarantee that
1234 we can reach the stub. So just flag an error later
1235 if we're doing a shared link and find we need a long
1241 /* Global symbols will need a .plt entry if they remain
1242 global, and in most cases won't need a long branch
1243 stub. Unfortunately, we have to cater for the case
1244 where a symbol is forced local by versioning, or due
1245 to symbolic linking, and we lose the .plt entry. */
1246 need_entry = NEED_PLT;
1247 if (hh->eh.type == STT_PARISC_MILLI)
1252 case R_PARISC_SEGBASE: /* Used to set segment base. */
1253 case R_PARISC_SEGREL32: /* Relative reloc, used for unwind. */
1254 case R_PARISC_PCREL14F: /* PC relative load/store. */
1255 case R_PARISC_PCREL14R:
1256 case R_PARISC_PCREL17R: /* External branches. */
1257 case R_PARISC_PCREL21L: /* As above, and for load/store too. */
1258 case R_PARISC_PCREL32:
1259 /* We don't need to propagate the relocation if linking a
1260 shared object since these are section relative. */
1263 case R_PARISC_DPREL14F: /* Used for gp rel data load/store. */
1264 case R_PARISC_DPREL14R:
1265 case R_PARISC_DPREL21L:
1266 if (bfd_link_pic (info))
1269 /* xgettext:c-format */
1270 (_("%B: relocation %s can not be used when making a shared object; recompile with -fPIC"),
1272 elf_hppa_howto_table[r_type].name);
1273 bfd_set_error (bfd_error_bad_value);
1278 case R_PARISC_DIR17F: /* Used for external branches. */
1279 case R_PARISC_DIR17R:
1280 case R_PARISC_DIR14F: /* Used for load/store from absolute locn. */
1281 case R_PARISC_DIR14R:
1282 case R_PARISC_DIR21L: /* As above, and for ext branches too. */
1283 case R_PARISC_DIR32: /* .word relocs. */
1284 /* We may want to output a dynamic relocation later. */
1285 need_entry = NEED_DYNREL;
1288 /* This relocation describes the C++ object vtable hierarchy.
1289 Reconstruct it for later use during GC. */
1290 case R_PARISC_GNU_VTINHERIT:
1291 if (!bfd_elf_gc_record_vtinherit (abfd, sec, &hh->eh, rela->r_offset))
1295 /* This relocation describes which C++ vtable entries are actually
1296 used. Record for later use during GC. */
1297 case R_PARISC_GNU_VTENTRY:
1298 BFD_ASSERT (hh != NULL);
1300 && !bfd_elf_gc_record_vtentry (abfd, sec, &hh->eh, rela->r_addend))
1304 case R_PARISC_TLS_GD21L:
1305 case R_PARISC_TLS_GD14R:
1306 case R_PARISC_TLS_LDM21L:
1307 case R_PARISC_TLS_LDM14R:
1308 need_entry = NEED_GOT;
1311 case R_PARISC_TLS_IE21L:
1312 case R_PARISC_TLS_IE14R:
1313 if (bfd_link_pic (info))
1314 info->flags |= DF_STATIC_TLS;
1315 need_entry = NEED_GOT;
1322 /* Now carry out our orders. */
1323 if (need_entry & NEED_GOT)
1328 tls_type = GOT_NORMAL;
1330 case R_PARISC_TLS_GD21L:
1331 case R_PARISC_TLS_GD14R:
1332 tls_type |= GOT_TLS_GD;
1334 case R_PARISC_TLS_LDM21L:
1335 case R_PARISC_TLS_LDM14R:
1336 tls_type |= GOT_TLS_LDM;
1338 case R_PARISC_TLS_IE21L:
1339 case R_PARISC_TLS_IE14R:
1340 tls_type |= GOT_TLS_IE;
1344 /* Allocate space for a GOT entry, as well as a dynamic
1345 relocation for this entry. */
1346 if (htab->etab.sgot == NULL)
1348 if (!elf32_hppa_create_dynamic_sections (htab->etab.dynobj, info))
1352 if (r_type == R_PARISC_TLS_LDM21L
1353 || r_type == R_PARISC_TLS_LDM14R)
1354 htab->tls_ldm_got.refcount += 1;
1359 hh->eh.got.refcount += 1;
1360 old_tls_type = hh->tls_type;
1364 bfd_signed_vma *local_got_refcounts;
1366 /* This is a global offset table entry for a local symbol. */
1367 local_got_refcounts = hppa32_elf_local_refcounts (abfd);
1368 if (local_got_refcounts == NULL)
1370 local_got_refcounts[r_symndx] += 1;
1372 old_tls_type = hppa_elf_local_got_tls_type (abfd) [r_symndx];
1375 tls_type |= old_tls_type;
1377 if (old_tls_type != tls_type)
1380 hh->tls_type = tls_type;
1382 hppa_elf_local_got_tls_type (abfd) [r_symndx] = tls_type;
1388 if (need_entry & NEED_PLT)
1390 /* If we are creating a shared library, and this is a reloc
1391 against a weak symbol or a global symbol in a dynamic
1392 object, then we will be creating an import stub and a
1393 .plt entry for the symbol. Similarly, on a normal link
1394 to symbols defined in a dynamic object we'll need the
1395 import stub and a .plt entry. We don't know yet whether
1396 the symbol is defined or not, so make an entry anyway and
1397 clean up later in adjust_dynamic_symbol. */
1398 if ((sec->flags & SEC_ALLOC) != 0)
1402 hh->eh.needs_plt = 1;
1403 hh->eh.plt.refcount += 1;
1405 /* If this .plt entry is for a plabel, mark it so
1406 that adjust_dynamic_symbol will keep the entry
1407 even if it appears to be local. */
1408 if (need_entry & PLT_PLABEL)
1411 else if (need_entry & PLT_PLABEL)
1413 bfd_signed_vma *local_got_refcounts;
1414 bfd_signed_vma *local_plt_refcounts;
1416 local_got_refcounts = hppa32_elf_local_refcounts (abfd);
1417 if (local_got_refcounts == NULL)
1419 local_plt_refcounts = (local_got_refcounts
1420 + symtab_hdr->sh_info);
1421 local_plt_refcounts[r_symndx] += 1;
1426 if (need_entry & NEED_DYNREL)
1428 /* Flag this symbol as having a non-got, non-plt reference
1429 so that we generate copy relocs if it turns out to be
1431 if (hh != NULL && !bfd_link_pic (info))
1432 hh->eh.non_got_ref = 1;
1434 /* If we are creating a shared library then we need to copy
1435 the reloc into the shared library. However, if we are
1436 linking with -Bsymbolic, we need only copy absolute
1437 relocs or relocs against symbols that are not defined in
1438 an object we are including in the link. PC- or DP- or
1439 DLT-relative relocs against any local sym or global sym
1440 with DEF_REGULAR set, can be discarded. At this point we
1441 have not seen all the input files, so it is possible that
1442 DEF_REGULAR is not set now but will be set later (it is
1443 never cleared). We account for that possibility below by
1444 storing information in the dyn_relocs field of the
1447 A similar situation to the -Bsymbolic case occurs when
1448 creating shared libraries and symbol visibility changes
1449 render the symbol local.
1451 As it turns out, all the relocs we will be creating here
1452 are absolute, so we cannot remove them on -Bsymbolic
1453 links or visibility changes anyway. A STUB_REL reloc
1454 is absolute too, as in that case it is the reloc in the
1455 stub we will be creating, rather than copying the PCREL
1456 reloc in the branch.
1458 If on the other hand, we are creating an executable, we
1459 may need to keep relocations for symbols satisfied by a
1460 dynamic library if we manage to avoid copy relocs for the
1462 if ((bfd_link_pic (info)
1463 && (sec->flags & SEC_ALLOC) != 0
1464 && (IS_ABSOLUTE_RELOC (r_type)
1466 && (!SYMBOLIC_BIND (info, &hh->eh)
1467 || hh->eh.root.type == bfd_link_hash_defweak
1468 || !hh->eh.def_regular))))
1469 || (ELIMINATE_COPY_RELOCS
1470 && !bfd_link_pic (info)
1471 && (sec->flags & SEC_ALLOC) != 0
1473 && (hh->eh.root.type == bfd_link_hash_defweak
1474 || !hh->eh.def_regular)))
1476 struct elf32_hppa_dyn_reloc_entry *hdh_p;
1477 struct elf32_hppa_dyn_reloc_entry **hdh_head;
1479 /* Create a reloc section in dynobj and make room for
1483 sreloc = _bfd_elf_make_dynamic_reloc_section
1484 (sec, htab->etab.dynobj, 2, abfd, /*rela?*/ TRUE);
1488 bfd_set_error (bfd_error_bad_value);
1493 /* If this is a global symbol, we count the number of
1494 relocations we need for this symbol. */
1497 hdh_head = &hh->dyn_relocs;
1501 /* Track dynamic relocs needed for local syms too.
1502 We really need local syms available to do this
1506 Elf_Internal_Sym *isym;
1508 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
1513 sr = bfd_section_from_elf_index (abfd, isym->st_shndx);
1517 vpp = &elf_section_data (sr)->local_dynrel;
1518 hdh_head = (struct elf32_hppa_dyn_reloc_entry **) vpp;
1522 if (hdh_p == NULL || hdh_p->sec != sec)
1524 hdh_p = bfd_alloc (htab->etab.dynobj, sizeof *hdh_p);
1527 hdh_p->hdh_next = *hdh_head;
1531 #if RELATIVE_DYNRELOCS
1532 hdh_p->relative_count = 0;
1537 #if RELATIVE_DYNRELOCS
1538 if (!IS_ABSOLUTE_RELOC (rtype))
1539 hdh_p->relative_count += 1;
1548 /* Return the section that should be marked against garbage collection
1549 for a given relocation. */
1552 elf32_hppa_gc_mark_hook (asection *sec,
1553 struct bfd_link_info *info,
1554 Elf_Internal_Rela *rela,
1555 struct elf_link_hash_entry *hh,
1556 Elf_Internal_Sym *sym)
1559 switch ((unsigned int) ELF32_R_TYPE (rela->r_info))
1561 case R_PARISC_GNU_VTINHERIT:
1562 case R_PARISC_GNU_VTENTRY:
1566 return _bfd_elf_gc_mark_hook (sec, info, rela, hh, sym);
1569 /* Update the got and plt entry reference counts for the section being
1573 elf32_hppa_gc_sweep_hook (bfd *abfd,
1574 struct bfd_link_info *info ATTRIBUTE_UNUSED,
1576 const Elf_Internal_Rela *relocs)
1578 Elf_Internal_Shdr *symtab_hdr;
1579 struct elf_link_hash_entry **eh_syms;
1580 bfd_signed_vma *local_got_refcounts;
1581 bfd_signed_vma *local_plt_refcounts;
1582 const Elf_Internal_Rela *rela, *relend;
1583 struct elf32_hppa_link_hash_table *htab;
1585 if (bfd_link_relocatable (info))
1588 htab = hppa_link_hash_table (info);
1592 elf_section_data (sec)->local_dynrel = NULL;
1594 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
1595 eh_syms = elf_sym_hashes (abfd);
1596 local_got_refcounts = elf_local_got_refcounts (abfd);
1597 local_plt_refcounts = local_got_refcounts;
1598 if (local_plt_refcounts != NULL)
1599 local_plt_refcounts += symtab_hdr->sh_info;
1601 relend = relocs + sec->reloc_count;
1602 for (rela = relocs; rela < relend; rela++)
1604 unsigned long r_symndx;
1605 unsigned int r_type;
1606 struct elf_link_hash_entry *eh = NULL;
1608 r_symndx = ELF32_R_SYM (rela->r_info);
1609 if (r_symndx >= symtab_hdr->sh_info)
1611 struct elf32_hppa_link_hash_entry *hh;
1612 struct elf32_hppa_dyn_reloc_entry **hdh_pp;
1613 struct elf32_hppa_dyn_reloc_entry *hdh_p;
1615 eh = eh_syms[r_symndx - symtab_hdr->sh_info];
1616 while (eh->root.type == bfd_link_hash_indirect
1617 || eh->root.type == bfd_link_hash_warning)
1618 eh = (struct elf_link_hash_entry *) eh->root.u.i.link;
1619 hh = hppa_elf_hash_entry (eh);
1621 for (hdh_pp = &hh->dyn_relocs; (hdh_p = *hdh_pp) != NULL; hdh_pp = &hdh_p->hdh_next)
1622 if (hdh_p->sec == sec)
1624 /* Everything must go for SEC. */
1625 *hdh_pp = hdh_p->hdh_next;
1630 r_type = ELF32_R_TYPE (rela->r_info);
1631 r_type = elf32_hppa_optimized_tls_reloc (info, r_type, eh != NULL);
1635 case R_PARISC_DLTIND14F:
1636 case R_PARISC_DLTIND14R:
1637 case R_PARISC_DLTIND21L:
1638 case R_PARISC_TLS_GD21L:
1639 case R_PARISC_TLS_GD14R:
1640 case R_PARISC_TLS_IE21L:
1641 case R_PARISC_TLS_IE14R:
1644 if (eh->got.refcount > 0)
1645 eh->got.refcount -= 1;
1647 else if (local_got_refcounts != NULL)
1649 if (local_got_refcounts[r_symndx] > 0)
1650 local_got_refcounts[r_symndx] -= 1;
1654 case R_PARISC_TLS_LDM21L:
1655 case R_PARISC_TLS_LDM14R:
1656 htab->tls_ldm_got.refcount -= 1;
1659 case R_PARISC_PCREL12F:
1660 case R_PARISC_PCREL17C:
1661 case R_PARISC_PCREL17F:
1662 case R_PARISC_PCREL22F:
1665 if (eh->plt.refcount > 0)
1666 eh->plt.refcount -= 1;
1670 case R_PARISC_PLABEL14R:
1671 case R_PARISC_PLABEL21L:
1672 case R_PARISC_PLABEL32:
1675 if (eh->plt.refcount > 0)
1676 eh->plt.refcount -= 1;
1678 else if (local_plt_refcounts != NULL)
1680 if (local_plt_refcounts[r_symndx] > 0)
1681 local_plt_refcounts[r_symndx] -= 1;
1693 /* Support for core dump NOTE sections. */
1696 elf32_hppa_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
1701 switch (note->descsz)
1706 case 396: /* Linux/hppa */
1708 elf_tdata (abfd)->core->signal = bfd_get_16 (abfd, note->descdata + 12);
1711 elf_tdata (abfd)->core->lwpid = bfd_get_32 (abfd, note->descdata + 24);
1720 /* Make a ".reg/999" section. */
1721 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
1722 size, note->descpos + offset);
1726 elf32_hppa_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
1728 switch (note->descsz)
1733 case 124: /* Linux/hppa elf_prpsinfo. */
1734 elf_tdata (abfd)->core->program
1735 = _bfd_elfcore_strndup (abfd, note->descdata + 28, 16);
1736 elf_tdata (abfd)->core->command
1737 = _bfd_elfcore_strndup (abfd, note->descdata + 44, 80);
1740 /* Note that for some reason, a spurious space is tacked
1741 onto the end of the args in some (at least one anyway)
1742 implementations, so strip it off if it exists. */
1744 char *command = elf_tdata (abfd)->core->command;
1745 int n = strlen (command);
1747 if (0 < n && command[n - 1] == ' ')
1748 command[n - 1] = '\0';
1754 /* Our own version of hide_symbol, so that we can keep plt entries for
1758 elf32_hppa_hide_symbol (struct bfd_link_info *info,
1759 struct elf_link_hash_entry *eh,
1760 bfd_boolean force_local)
1764 eh->forced_local = 1;
1765 if (eh->dynindx != -1)
1768 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
1772 /* PR 16082: Remove version information from hidden symbol. */
1773 eh->verinfo.verdef = NULL;
1774 eh->verinfo.vertree = NULL;
1777 /* STT_GNU_IFUNC symbol must go through PLT. */
1778 if (! hppa_elf_hash_entry (eh)->plabel
1779 && eh->type != STT_GNU_IFUNC)
1782 eh->plt = elf_hash_table (info)->init_plt_offset;
1786 /* Adjust a symbol defined by a dynamic object and referenced by a
1787 regular object. The current definition is in some section of the
1788 dynamic object, but we're not including those sections. We have to
1789 change the definition to something the rest of the link can
1793 elf32_hppa_adjust_dynamic_symbol (struct bfd_link_info *info,
1794 struct elf_link_hash_entry *eh)
1796 struct elf32_hppa_link_hash_table *htab;
1797 asection *sec, *srel;
1799 /* If this is a function, put it in the procedure linkage table. We
1800 will fill in the contents of the procedure linkage table later. */
1801 if (eh->type == STT_FUNC
1804 /* If the symbol is used by a plabel, we must allocate a PLT slot.
1805 The refcounts are not reliable when it has been hidden since
1806 hide_symbol can be called before the plabel flag is set. */
1807 if (hppa_elf_hash_entry (eh)->plabel
1808 && eh->plt.refcount <= 0)
1809 eh->plt.refcount = 1;
1811 if (eh->plt.refcount <= 0
1813 && eh->root.type != bfd_link_hash_defweak
1814 && ! hppa_elf_hash_entry (eh)->plabel
1815 && (!bfd_link_pic (info) || SYMBOLIC_BIND (info, eh))))
1817 /* The .plt entry is not needed when:
1818 a) Garbage collection has removed all references to the
1820 b) We know for certain the symbol is defined in this
1821 object, and it's not a weak definition, nor is the symbol
1822 used by a plabel relocation. Either this object is the
1823 application or we are doing a shared symbolic link. */
1825 eh->plt.offset = (bfd_vma) -1;
1832 eh->plt.offset = (bfd_vma) -1;
1834 /* If this is a weak symbol, and there is a real definition, the
1835 processor independent code will have arranged for us to see the
1836 real definition first, and we can just use the same value. */
1837 if (eh->u.weakdef != NULL)
1839 if (eh->u.weakdef->root.type != bfd_link_hash_defined
1840 && eh->u.weakdef->root.type != bfd_link_hash_defweak)
1842 eh->root.u.def.section = eh->u.weakdef->root.u.def.section;
1843 eh->root.u.def.value = eh->u.weakdef->root.u.def.value;
1844 if (ELIMINATE_COPY_RELOCS)
1845 eh->non_got_ref = eh->u.weakdef->non_got_ref;
1849 /* This is a reference to a symbol defined by a dynamic object which
1850 is not a function. */
1852 /* If we are creating a shared library, we must presume that the
1853 only references to the symbol are via the global offset table.
1854 For such cases we need not do anything here; the relocations will
1855 be handled correctly by relocate_section. */
1856 if (bfd_link_pic (info))
1859 /* If there are no references to this symbol that do not use the
1860 GOT, we don't need to generate a copy reloc. */
1861 if (!eh->non_got_ref)
1864 if (ELIMINATE_COPY_RELOCS)
1866 struct elf32_hppa_link_hash_entry *hh;
1867 struct elf32_hppa_dyn_reloc_entry *hdh_p;
1869 hh = hppa_elf_hash_entry (eh);
1870 for (hdh_p = hh->dyn_relocs; hdh_p != NULL; hdh_p = hdh_p->hdh_next)
1872 sec = hdh_p->sec->output_section;
1873 if (sec != NULL && (sec->flags & SEC_READONLY) != 0)
1877 /* If we didn't find any dynamic relocs in read-only sections, then
1878 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
1881 eh->non_got_ref = 0;
1886 /* We must allocate the symbol in our .dynbss section, which will
1887 become part of the .bss section of the executable. There will be
1888 an entry for this symbol in the .dynsym section. The dynamic
1889 object will contain position independent code, so all references
1890 from the dynamic object to this symbol will go through the global
1891 offset table. The dynamic linker will use the .dynsym entry to
1892 determine the address it must put in the global offset table, so
1893 both the dynamic object and the regular object will refer to the
1894 same memory location for the variable. */
1896 htab = hppa_link_hash_table (info);
1900 /* We must generate a COPY reloc to tell the dynamic linker to
1901 copy the initial value out of the dynamic object and into the
1902 runtime process image. */
1903 if ((eh->root.u.def.section->flags & SEC_READONLY) != 0)
1905 sec = htab->etab.sdynrelro;
1906 srel = htab->etab.sreldynrelro;
1910 sec = htab->etab.sdynbss;
1911 srel = htab->etab.srelbss;
1913 if ((eh->root.u.def.section->flags & SEC_ALLOC) != 0 && eh->size != 0)
1915 srel->size += sizeof (Elf32_External_Rela);
1919 return _bfd_elf_adjust_dynamic_copy (info, eh, sec);
1922 /* Allocate space in the .plt for entries that won't have relocations.
1923 ie. plabel entries. */
1926 allocate_plt_static (struct elf_link_hash_entry *eh, void *inf)
1928 struct bfd_link_info *info;
1929 struct elf32_hppa_link_hash_table *htab;
1930 struct elf32_hppa_link_hash_entry *hh;
1933 if (eh->root.type == bfd_link_hash_indirect)
1936 info = (struct bfd_link_info *) inf;
1937 hh = hppa_elf_hash_entry (eh);
1938 htab = hppa_link_hash_table (info);
1942 if (htab->etab.dynamic_sections_created
1943 && eh->plt.refcount > 0)
1945 /* Make sure this symbol is output as a dynamic symbol.
1946 Undefined weak syms won't yet be marked as dynamic. */
1947 if (eh->dynindx == -1
1948 && !eh->forced_local
1949 && eh->type != STT_PARISC_MILLI)
1951 if (! bfd_elf_link_record_dynamic_symbol (info, eh))
1955 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, bfd_link_pic (info), eh))
1957 /* Allocate these later. From this point on, h->plabel
1958 means that the plt entry is only used by a plabel.
1959 We'll be using a normal plt entry for this symbol, so
1960 clear the plabel indicator. */
1964 else if (hh->plabel)
1966 /* Make an entry in the .plt section for plabel references
1967 that won't have a .plt entry for other reasons. */
1968 sec = htab->etab.splt;
1969 eh->plt.offset = sec->size;
1970 sec->size += PLT_ENTRY_SIZE;
1974 /* No .plt entry needed. */
1975 eh->plt.offset = (bfd_vma) -1;
1981 eh->plt.offset = (bfd_vma) -1;
1988 /* Allocate space in .plt, .got and associated reloc sections for
1992 allocate_dynrelocs (struct elf_link_hash_entry *eh, void *inf)
1994 struct bfd_link_info *info;
1995 struct elf32_hppa_link_hash_table *htab;
1997 struct elf32_hppa_link_hash_entry *hh;
1998 struct elf32_hppa_dyn_reloc_entry *hdh_p;
2000 if (eh->root.type == bfd_link_hash_indirect)
2004 htab = hppa_link_hash_table (info);
2008 hh = hppa_elf_hash_entry (eh);
2010 if (htab->etab.dynamic_sections_created
2011 && eh->plt.offset != (bfd_vma) -1
2013 && eh->plt.refcount > 0)
2015 /* Make an entry in the .plt section. */
2016 sec = htab->etab.splt;
2017 eh->plt.offset = sec->size;
2018 sec->size += PLT_ENTRY_SIZE;
2020 /* We also need to make an entry in the .rela.plt section. */
2021 htab->etab.srelplt->size += sizeof (Elf32_External_Rela);
2022 htab->need_plt_stub = 1;
2025 if (eh->got.refcount > 0)
2027 /* Make sure this symbol is output as a dynamic symbol.
2028 Undefined weak syms won't yet be marked as dynamic. */
2029 if (eh->dynindx == -1
2030 && !eh->forced_local
2031 && eh->type != STT_PARISC_MILLI)
2033 if (! bfd_elf_link_record_dynamic_symbol (info, eh))
2037 sec = htab->etab.sgot;
2038 eh->got.offset = sec->size;
2039 sec->size += GOT_ENTRY_SIZE;
2040 /* R_PARISC_TLS_GD* needs two GOT entries */
2041 if ((hh->tls_type & (GOT_TLS_GD | GOT_TLS_IE)) == (GOT_TLS_GD | GOT_TLS_IE))
2042 sec->size += GOT_ENTRY_SIZE * 2;
2043 else if ((hh->tls_type & GOT_TLS_GD) == GOT_TLS_GD)
2044 sec->size += GOT_ENTRY_SIZE;
2045 if (htab->etab.dynamic_sections_created
2046 && (bfd_link_pic (info)
2047 || (eh->dynindx != -1
2048 && !eh->forced_local)))
2050 htab->etab.srelgot->size += sizeof (Elf32_External_Rela);
2051 if ((hh->tls_type & (GOT_TLS_GD | GOT_TLS_IE)) == (GOT_TLS_GD | GOT_TLS_IE))
2052 htab->etab.srelgot->size += 2 * sizeof (Elf32_External_Rela);
2053 else if ((hh->tls_type & GOT_TLS_GD) == GOT_TLS_GD)
2054 htab->etab.srelgot->size += sizeof (Elf32_External_Rela);
2058 eh->got.offset = (bfd_vma) -1;
2060 if (hh->dyn_relocs == NULL)
2063 /* If this is a -Bsymbolic shared link, then we need to discard all
2064 space allocated for dynamic pc-relative relocs against symbols
2065 defined in a regular object. For the normal shared case, discard
2066 space for relocs that have become local due to symbol visibility
2068 if (bfd_link_pic (info))
2070 #if RELATIVE_DYNRELOCS
2071 if (SYMBOL_CALLS_LOCAL (info, eh))
2073 struct elf32_hppa_dyn_reloc_entry **hdh_pp;
2075 for (hdh_pp = &hh->dyn_relocs; (hdh_p = *hdh_pp) != NULL; )
2077 hdh_p->count -= hdh_p->relative_count;
2078 hdh_p->relative_count = 0;
2079 if (hdh_p->count == 0)
2080 *hdh_pp = hdh_p->hdh_next;
2082 hdh_pp = &hdh_p->hdh_next;
2087 /* Also discard relocs on undefined weak syms with non-default
2089 if (hh->dyn_relocs != NULL
2090 && eh->root.type == bfd_link_hash_undefweak)
2092 if (ELF_ST_VISIBILITY (eh->other) != STV_DEFAULT)
2093 hh->dyn_relocs = NULL;
2095 /* Make sure undefined weak symbols are output as a dynamic
2097 else if (eh->dynindx == -1
2098 && !eh->forced_local)
2100 if (! bfd_elf_link_record_dynamic_symbol (info, eh))
2107 /* For the non-shared case, discard space for relocs against
2108 symbols which turn out to need copy relocs or are not
2111 if (!eh->non_got_ref
2112 && ((ELIMINATE_COPY_RELOCS
2114 && !eh->def_regular)
2115 || (htab->etab.dynamic_sections_created
2116 && (eh->root.type == bfd_link_hash_undefweak
2117 || eh->root.type == bfd_link_hash_undefined))))
2119 /* Make sure this symbol is output as a dynamic symbol.
2120 Undefined weak syms won't yet be marked as dynamic. */
2121 if (eh->dynindx == -1
2122 && !eh->forced_local
2123 && eh->type != STT_PARISC_MILLI)
2125 if (! bfd_elf_link_record_dynamic_symbol (info, eh))
2129 /* If that succeeded, we know we'll be keeping all the
2131 if (eh->dynindx != -1)
2135 hh->dyn_relocs = NULL;
2141 /* Finally, allocate space. */
2142 for (hdh_p = hh->dyn_relocs; hdh_p != NULL; hdh_p = hdh_p->hdh_next)
2144 asection *sreloc = elf_section_data (hdh_p->sec)->sreloc;
2145 sreloc->size += hdh_p->count * sizeof (Elf32_External_Rela);
2151 /* This function is called via elf_link_hash_traverse to force
2152 millicode symbols local so they do not end up as globals in the
2153 dynamic symbol table. We ought to be able to do this in
2154 adjust_dynamic_symbol, but our adjust_dynamic_symbol is not called
2155 for all dynamic symbols. Arguably, this is a bug in
2156 elf_adjust_dynamic_symbol. */
2159 clobber_millicode_symbols (struct elf_link_hash_entry *eh,
2160 struct bfd_link_info *info)
2162 if (eh->type == STT_PARISC_MILLI
2163 && !eh->forced_local)
2165 elf32_hppa_hide_symbol (info, eh, TRUE);
2170 /* Find any dynamic relocs that apply to read-only sections. */
2173 readonly_dynrelocs (struct elf_link_hash_entry *eh, void *inf)
2175 struct elf32_hppa_link_hash_entry *hh;
2176 struct elf32_hppa_dyn_reloc_entry *hdh_p;
2178 hh = hppa_elf_hash_entry (eh);
2179 for (hdh_p = hh->dyn_relocs; hdh_p != NULL; hdh_p = hdh_p->hdh_next)
2181 asection *sec = hdh_p->sec->output_section;
2183 if (sec != NULL && (sec->flags & SEC_READONLY) != 0)
2185 struct bfd_link_info *info = inf;
2187 info->flags |= DF_TEXTREL;
2189 /* Not an error, just cut short the traversal. */
2196 /* Set the sizes of the dynamic sections. */
2199 elf32_hppa_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
2200 struct bfd_link_info *info)
2202 struct elf32_hppa_link_hash_table *htab;
2208 htab = hppa_link_hash_table (info);
2212 dynobj = htab->etab.dynobj;
2216 if (htab->etab.dynamic_sections_created)
2218 /* Set the contents of the .interp section to the interpreter. */
2219 if (bfd_link_executable (info) && !info->nointerp)
2221 sec = bfd_get_linker_section (dynobj, ".interp");
2224 sec->size = sizeof ELF_DYNAMIC_INTERPRETER;
2225 sec->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
2228 /* Force millicode symbols local. */
2229 elf_link_hash_traverse (&htab->etab,
2230 clobber_millicode_symbols,
2234 /* Set up .got and .plt offsets for local syms, and space for local
2236 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
2238 bfd_signed_vma *local_got;
2239 bfd_signed_vma *end_local_got;
2240 bfd_signed_vma *local_plt;
2241 bfd_signed_vma *end_local_plt;
2242 bfd_size_type locsymcount;
2243 Elf_Internal_Shdr *symtab_hdr;
2245 char *local_tls_type;
2247 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour)
2250 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
2252 struct elf32_hppa_dyn_reloc_entry *hdh_p;
2254 for (hdh_p = ((struct elf32_hppa_dyn_reloc_entry *)
2255 elf_section_data (sec)->local_dynrel);
2257 hdh_p = hdh_p->hdh_next)
2259 if (!bfd_is_abs_section (hdh_p->sec)
2260 && bfd_is_abs_section (hdh_p->sec->output_section))
2262 /* Input section has been discarded, either because
2263 it is a copy of a linkonce section or due to
2264 linker script /DISCARD/, so we'll be discarding
2267 else if (hdh_p->count != 0)
2269 srel = elf_section_data (hdh_p->sec)->sreloc;
2270 srel->size += hdh_p->count * sizeof (Elf32_External_Rela);
2271 if ((hdh_p->sec->output_section->flags & SEC_READONLY) != 0)
2272 info->flags |= DF_TEXTREL;
2277 local_got = elf_local_got_refcounts (ibfd);
2281 symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
2282 locsymcount = symtab_hdr->sh_info;
2283 end_local_got = local_got + locsymcount;
2284 local_tls_type = hppa_elf_local_got_tls_type (ibfd);
2285 sec = htab->etab.sgot;
2286 srel = htab->etab.srelgot;
2287 for (; local_got < end_local_got; ++local_got)
2291 *local_got = sec->size;
2292 sec->size += GOT_ENTRY_SIZE;
2293 if ((*local_tls_type & (GOT_TLS_GD | GOT_TLS_IE)) == (GOT_TLS_GD | GOT_TLS_IE))
2294 sec->size += 2 * GOT_ENTRY_SIZE;
2295 else if ((*local_tls_type & GOT_TLS_GD) == GOT_TLS_GD)
2296 sec->size += GOT_ENTRY_SIZE;
2297 if (bfd_link_pic (info))
2299 srel->size += sizeof (Elf32_External_Rela);
2300 if ((*local_tls_type & (GOT_TLS_GD | GOT_TLS_IE)) == (GOT_TLS_GD | GOT_TLS_IE))
2301 srel->size += 2 * sizeof (Elf32_External_Rela);
2302 else if ((*local_tls_type & GOT_TLS_GD) == GOT_TLS_GD)
2303 srel->size += sizeof (Elf32_External_Rela);
2307 *local_got = (bfd_vma) -1;
2312 local_plt = end_local_got;
2313 end_local_plt = local_plt + locsymcount;
2314 if (! htab->etab.dynamic_sections_created)
2316 /* Won't be used, but be safe. */
2317 for (; local_plt < end_local_plt; ++local_plt)
2318 *local_plt = (bfd_vma) -1;
2322 sec = htab->etab.splt;
2323 srel = htab->etab.srelplt;
2324 for (; local_plt < end_local_plt; ++local_plt)
2328 *local_plt = sec->size;
2329 sec->size += PLT_ENTRY_SIZE;
2330 if (bfd_link_pic (info))
2331 srel->size += sizeof (Elf32_External_Rela);
2334 *local_plt = (bfd_vma) -1;
2339 if (htab->tls_ldm_got.refcount > 0)
2341 /* Allocate 2 got entries and 1 dynamic reloc for
2342 R_PARISC_TLS_DTPMOD32 relocs. */
2343 htab->tls_ldm_got.offset = htab->etab.sgot->size;
2344 htab->etab.sgot->size += (GOT_ENTRY_SIZE * 2);
2345 htab->etab.srelgot->size += sizeof (Elf32_External_Rela);
2348 htab->tls_ldm_got.offset = -1;
2350 /* Do all the .plt entries without relocs first. The dynamic linker
2351 uses the last .plt reloc to find the end of the .plt (and hence
2352 the start of the .got) for lazy linking. */
2353 elf_link_hash_traverse (&htab->etab, allocate_plt_static, info);
2355 /* Allocate global sym .plt and .got entries, and space for global
2356 sym dynamic relocs. */
2357 elf_link_hash_traverse (&htab->etab, allocate_dynrelocs, info);
2359 /* The check_relocs and adjust_dynamic_symbol entry points have
2360 determined the sizes of the various dynamic sections. Allocate
2363 for (sec = dynobj->sections; sec != NULL; sec = sec->next)
2365 if ((sec->flags & SEC_LINKER_CREATED) == 0)
2368 if (sec == htab->etab.splt)
2370 if (htab->need_plt_stub)
2372 /* Make space for the plt stub at the end of the .plt
2373 section. We want this stub right at the end, up
2374 against the .got section. */
2375 int gotalign = bfd_section_alignment (dynobj, htab->etab.sgot);
2376 int pltalign = bfd_section_alignment (dynobj, sec);
2379 if (gotalign > pltalign)
2380 (void) bfd_set_section_alignment (dynobj, sec, gotalign);
2381 mask = ((bfd_size_type) 1 << gotalign) - 1;
2382 sec->size = (sec->size + sizeof (plt_stub) + mask) & ~mask;
2385 else if (sec == htab->etab.sgot
2386 || sec == htab->etab.sdynbss
2387 || sec == htab->etab.sdynrelro)
2389 else if (CONST_STRNEQ (bfd_get_section_name (dynobj, sec), ".rela"))
2393 /* Remember whether there are any reloc sections other
2395 if (sec != htab->etab.srelplt)
2398 /* We use the reloc_count field as a counter if we need
2399 to copy relocs into the output file. */
2400 sec->reloc_count = 0;
2405 /* It's not one of our sections, so don't allocate space. */
2411 /* If we don't need this section, strip it from the
2412 output file. This is mostly to handle .rela.bss and
2413 .rela.plt. We must create both sections in
2414 create_dynamic_sections, because they must be created
2415 before the linker maps input sections to output
2416 sections. The linker does that before
2417 adjust_dynamic_symbol is called, and it is that
2418 function which decides whether anything needs to go
2419 into these sections. */
2420 sec->flags |= SEC_EXCLUDE;
2424 if ((sec->flags & SEC_HAS_CONTENTS) == 0)
2427 /* Allocate memory for the section contents. Zero it, because
2428 we may not fill in all the reloc sections. */
2429 sec->contents = bfd_zalloc (dynobj, sec->size);
2430 if (sec->contents == NULL)
2434 if (htab->etab.dynamic_sections_created)
2436 /* Like IA-64 and HPPA64, always create a DT_PLTGOT. It
2437 actually has nothing to do with the PLT, it is how we
2438 communicate the LTP value of a load module to the dynamic
2440 #define add_dynamic_entry(TAG, VAL) \
2441 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
2443 if (!add_dynamic_entry (DT_PLTGOT, 0))
2446 /* Add some entries to the .dynamic section. We fill in the
2447 values later, in elf32_hppa_finish_dynamic_sections, but we
2448 must add the entries now so that we get the correct size for
2449 the .dynamic section. The DT_DEBUG entry is filled in by the
2450 dynamic linker and used by the debugger. */
2451 if (bfd_link_executable (info))
2453 if (!add_dynamic_entry (DT_DEBUG, 0))
2457 if (htab->etab.srelplt->size != 0)
2459 if (!add_dynamic_entry (DT_PLTRELSZ, 0)
2460 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
2461 || !add_dynamic_entry (DT_JMPREL, 0))
2467 if (!add_dynamic_entry (DT_RELA, 0)
2468 || !add_dynamic_entry (DT_RELASZ, 0)
2469 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf32_External_Rela)))
2472 /* If any dynamic relocs apply to a read-only section,
2473 then we need a DT_TEXTREL entry. */
2474 if ((info->flags & DF_TEXTREL) == 0)
2475 elf_link_hash_traverse (&htab->etab, readonly_dynrelocs, info);
2477 if ((info->flags & DF_TEXTREL) != 0)
2479 if (!add_dynamic_entry (DT_TEXTREL, 0))
2484 #undef add_dynamic_entry
2489 /* External entry points for sizing and building linker stubs. */
2491 /* Set up various things so that we can make a list of input sections
2492 for each output section included in the link. Returns -1 on error,
2493 0 when no stubs will be needed, and 1 on success. */
2496 elf32_hppa_setup_section_lists (bfd *output_bfd, struct bfd_link_info *info)
2499 unsigned int bfd_count;
2500 unsigned int top_id, top_index;
2502 asection **input_list, **list;
2504 struct elf32_hppa_link_hash_table *htab = hppa_link_hash_table (info);
2509 /* Count the number of input BFDs and find the top input section id. */
2510 for (input_bfd = info->input_bfds, bfd_count = 0, top_id = 0;
2512 input_bfd = input_bfd->link.next)
2515 for (section = input_bfd->sections;
2517 section = section->next)
2519 if (top_id < section->id)
2520 top_id = section->id;
2523 htab->bfd_count = bfd_count;
2525 amt = sizeof (struct map_stub) * (top_id + 1);
2526 htab->stub_group = bfd_zmalloc (amt);
2527 if (htab->stub_group == NULL)
2530 /* We can't use output_bfd->section_count here to find the top output
2531 section index as some sections may have been removed, and
2532 strip_excluded_output_sections doesn't renumber the indices. */
2533 for (section = output_bfd->sections, top_index = 0;
2535 section = section->next)
2537 if (top_index < section->index)
2538 top_index = section->index;
2541 htab->top_index = top_index;
2542 amt = sizeof (asection *) * (top_index + 1);
2543 input_list = bfd_malloc (amt);
2544 htab->input_list = input_list;
2545 if (input_list == NULL)
2548 /* For sections we aren't interested in, mark their entries with a
2549 value we can check later. */
2550 list = input_list + top_index;
2552 *list = bfd_abs_section_ptr;
2553 while (list-- != input_list);
2555 for (section = output_bfd->sections;
2557 section = section->next)
2559 if ((section->flags & SEC_CODE) != 0)
2560 input_list[section->index] = NULL;
2566 /* The linker repeatedly calls this function for each input section,
2567 in the order that input sections are linked into output sections.
2568 Build lists of input sections to determine groupings between which
2569 we may insert linker stubs. */
2572 elf32_hppa_next_input_section (struct bfd_link_info *info, asection *isec)
2574 struct elf32_hppa_link_hash_table *htab = hppa_link_hash_table (info);
2579 if (isec->output_section->index <= htab->top_index)
2581 asection **list = htab->input_list + isec->output_section->index;
2582 if (*list != bfd_abs_section_ptr)
2584 /* Steal the link_sec pointer for our list. */
2585 #define PREV_SEC(sec) (htab->stub_group[(sec)->id].link_sec)
2586 /* This happens to make the list in reverse order,
2587 which is what we want. */
2588 PREV_SEC (isec) = *list;
2594 /* See whether we can group stub sections together. Grouping stub
2595 sections may result in fewer stubs. More importantly, we need to
2596 put all .init* and .fini* stubs at the beginning of the .init or
2597 .fini output sections respectively, because glibc splits the
2598 _init and _fini functions into multiple parts. Putting a stub in
2599 the middle of a function is not a good idea. */
2602 group_sections (struct elf32_hppa_link_hash_table *htab,
2603 bfd_size_type stub_group_size,
2604 bfd_boolean stubs_always_before_branch)
2606 asection **list = htab->input_list + htab->top_index;
2609 asection *tail = *list;
2610 if (tail == bfd_abs_section_ptr)
2612 while (tail != NULL)
2616 bfd_size_type total;
2617 bfd_boolean big_sec;
2621 big_sec = total >= stub_group_size;
2623 while ((prev = PREV_SEC (curr)) != NULL
2624 && ((total += curr->output_offset - prev->output_offset)
2628 /* OK, the size from the start of CURR to the end is less
2629 than 240000 bytes and thus can be handled by one stub
2630 section. (or the tail section is itself larger than
2631 240000 bytes, in which case we may be toast.)
2632 We should really be keeping track of the total size of
2633 stubs added here, as stubs contribute to the final output
2634 section size. That's a little tricky, and this way will
2635 only break if stubs added total more than 22144 bytes, or
2636 2768 long branch stubs. It seems unlikely for more than
2637 2768 different functions to be called, especially from
2638 code only 240000 bytes long. This limit used to be
2639 250000, but c++ code tends to generate lots of little
2640 functions, and sometimes violated the assumption. */
2643 prev = PREV_SEC (tail);
2644 /* Set up this stub group. */
2645 htab->stub_group[tail->id].link_sec = curr;
2647 while (tail != curr && (tail = prev) != NULL);
2649 /* But wait, there's more! Input sections up to 240000
2650 bytes before the stub section can be handled by it too.
2651 Don't do this if we have a really large section after the
2652 stubs, as adding more stubs increases the chance that
2653 branches may not reach into the stub section. */
2654 if (!stubs_always_before_branch && !big_sec)
2658 && ((total += tail->output_offset - prev->output_offset)
2662 prev = PREV_SEC (tail);
2663 htab->stub_group[tail->id].link_sec = curr;
2669 while (list-- != htab->input_list);
2670 free (htab->input_list);
2674 /* Read in all local syms for all input bfds, and create hash entries
2675 for export stubs if we are building a multi-subspace shared lib.
2676 Returns -1 on error, 1 if export stubs created, 0 otherwise. */
2679 get_local_syms (bfd *output_bfd, bfd *input_bfd, struct bfd_link_info *info)
2681 unsigned int bfd_indx;
2682 Elf_Internal_Sym *local_syms, **all_local_syms;
2683 int stub_changed = 0;
2684 struct elf32_hppa_link_hash_table *htab = hppa_link_hash_table (info);
2689 /* We want to read in symbol extension records only once. To do this
2690 we need to read in the local symbols in parallel and save them for
2691 later use; so hold pointers to the local symbols in an array. */
2692 bfd_size_type amt = sizeof (Elf_Internal_Sym *) * htab->bfd_count;
2693 all_local_syms = bfd_zmalloc (amt);
2694 htab->all_local_syms = all_local_syms;
2695 if (all_local_syms == NULL)
2698 /* Walk over all the input BFDs, swapping in local symbols.
2699 If we are creating a shared library, create hash entries for the
2703 input_bfd = input_bfd->link.next, bfd_indx++)
2705 Elf_Internal_Shdr *symtab_hdr;
2707 /* We'll need the symbol table in a second. */
2708 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
2709 if (symtab_hdr->sh_info == 0)
2712 /* We need an array of the local symbols attached to the input bfd. */
2713 local_syms = (Elf_Internal_Sym *) symtab_hdr->contents;
2714 if (local_syms == NULL)
2716 local_syms = bfd_elf_get_elf_syms (input_bfd, symtab_hdr,
2717 symtab_hdr->sh_info, 0,
2719 /* Cache them for elf_link_input_bfd. */
2720 symtab_hdr->contents = (unsigned char *) local_syms;
2722 if (local_syms == NULL)
2725 all_local_syms[bfd_indx] = local_syms;
2727 if (bfd_link_pic (info) && htab->multi_subspace)
2729 struct elf_link_hash_entry **eh_syms;
2730 struct elf_link_hash_entry **eh_symend;
2731 unsigned int symcount;
2733 symcount = (symtab_hdr->sh_size / sizeof (Elf32_External_Sym)
2734 - symtab_hdr->sh_info);
2735 eh_syms = (struct elf_link_hash_entry **) elf_sym_hashes (input_bfd);
2736 eh_symend = (struct elf_link_hash_entry **) (eh_syms + symcount);
2738 /* Look through the global syms for functions; We need to
2739 build export stubs for all globally visible functions. */
2740 for (; eh_syms < eh_symend; eh_syms++)
2742 struct elf32_hppa_link_hash_entry *hh;
2744 hh = hppa_elf_hash_entry (*eh_syms);
2746 while (hh->eh.root.type == bfd_link_hash_indirect
2747 || hh->eh.root.type == bfd_link_hash_warning)
2748 hh = hppa_elf_hash_entry (hh->eh.root.u.i.link);
2750 /* At this point in the link, undefined syms have been
2751 resolved, so we need to check that the symbol was
2752 defined in this BFD. */
2753 if ((hh->eh.root.type == bfd_link_hash_defined
2754 || hh->eh.root.type == bfd_link_hash_defweak)
2755 && hh->eh.type == STT_FUNC
2756 && hh->eh.root.u.def.section->output_section != NULL
2757 && (hh->eh.root.u.def.section->output_section->owner
2759 && hh->eh.root.u.def.section->owner == input_bfd
2760 && hh->eh.def_regular
2761 && !hh->eh.forced_local
2762 && ELF_ST_VISIBILITY (hh->eh.other) == STV_DEFAULT)
2765 const char *stub_name;
2766 struct elf32_hppa_stub_hash_entry *hsh;
2768 sec = hh->eh.root.u.def.section;
2769 stub_name = hh_name (hh);
2770 hsh = hppa_stub_hash_lookup (&htab->bstab,
2775 hsh = hppa_add_stub (stub_name, sec, htab);
2779 hsh->target_value = hh->eh.root.u.def.value;
2780 hsh->target_section = hh->eh.root.u.def.section;
2781 hsh->stub_type = hppa_stub_export;
2787 /* xgettext:c-format */
2788 _bfd_error_handler (_("%B: duplicate export stub %s"),
2789 input_bfd, stub_name);
2796 return stub_changed;
2799 /* Determine and set the size of the stub section for a final link.
2801 The basic idea here is to examine all the relocations looking for
2802 PC-relative calls to a target that is unreachable with a "bl"
2806 elf32_hppa_size_stubs
2807 (bfd *output_bfd, bfd *stub_bfd, struct bfd_link_info *info,
2808 bfd_boolean multi_subspace, bfd_signed_vma group_size,
2809 asection * (*add_stub_section) (const char *, asection *),
2810 void (*layout_sections_again) (void))
2812 bfd_size_type stub_group_size;
2813 bfd_boolean stubs_always_before_branch;
2814 bfd_boolean stub_changed;
2815 struct elf32_hppa_link_hash_table *htab = hppa_link_hash_table (info);
2820 /* Stash our params away. */
2821 htab->stub_bfd = stub_bfd;
2822 htab->multi_subspace = multi_subspace;
2823 htab->add_stub_section = add_stub_section;
2824 htab->layout_sections_again = layout_sections_again;
2825 stubs_always_before_branch = group_size < 0;
2827 stub_group_size = -group_size;
2829 stub_group_size = group_size;
2830 if (stub_group_size == 1)
2832 /* Default values. */
2833 if (stubs_always_before_branch)
2835 stub_group_size = 7680000;
2836 if (htab->has_17bit_branch || htab->multi_subspace)
2837 stub_group_size = 240000;
2838 if (htab->has_12bit_branch)
2839 stub_group_size = 7500;
2843 stub_group_size = 6971392;
2844 if (htab->has_17bit_branch || htab->multi_subspace)
2845 stub_group_size = 217856;
2846 if (htab->has_12bit_branch)
2847 stub_group_size = 6808;
2851 group_sections (htab, stub_group_size, stubs_always_before_branch);
2853 switch (get_local_syms (output_bfd, info->input_bfds, info))
2856 if (htab->all_local_syms)
2857 goto error_ret_free_local;
2861 stub_changed = FALSE;
2865 stub_changed = TRUE;
2872 unsigned int bfd_indx;
2875 for (input_bfd = info->input_bfds, bfd_indx = 0;
2877 input_bfd = input_bfd->link.next, bfd_indx++)
2879 Elf_Internal_Shdr *symtab_hdr;
2881 Elf_Internal_Sym *local_syms;
2883 /* We'll need the symbol table in a second. */
2884 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
2885 if (symtab_hdr->sh_info == 0)
2888 local_syms = htab->all_local_syms[bfd_indx];
2890 /* Walk over each section attached to the input bfd. */
2891 for (section = input_bfd->sections;
2893 section = section->next)
2895 Elf_Internal_Rela *internal_relocs, *irelaend, *irela;
2897 /* If there aren't any relocs, then there's nothing more
2899 if ((section->flags & SEC_RELOC) == 0
2900 || section->reloc_count == 0)
2903 /* If this section is a link-once section that will be
2904 discarded, then don't create any stubs. */
2905 if (section->output_section == NULL
2906 || section->output_section->owner != output_bfd)
2909 /* Get the relocs. */
2911 = _bfd_elf_link_read_relocs (input_bfd, section, NULL, NULL,
2913 if (internal_relocs == NULL)
2914 goto error_ret_free_local;
2916 /* Now examine each relocation. */
2917 irela = internal_relocs;
2918 irelaend = irela + section->reloc_count;
2919 for (; irela < irelaend; irela++)
2921 unsigned int r_type, r_indx;
2922 enum elf32_hppa_stub_type stub_type;
2923 struct elf32_hppa_stub_hash_entry *hsh;
2926 bfd_vma destination;
2927 struct elf32_hppa_link_hash_entry *hh;
2929 const asection *id_sec;
2931 r_type = ELF32_R_TYPE (irela->r_info);
2932 r_indx = ELF32_R_SYM (irela->r_info);
2934 if (r_type >= (unsigned int) R_PARISC_UNIMPLEMENTED)
2936 bfd_set_error (bfd_error_bad_value);
2937 error_ret_free_internal:
2938 if (elf_section_data (section)->relocs == NULL)
2939 free (internal_relocs);
2940 goto error_ret_free_local;
2943 /* Only look for stubs on call instructions. */
2944 if (r_type != (unsigned int) R_PARISC_PCREL12F
2945 && r_type != (unsigned int) R_PARISC_PCREL17F
2946 && r_type != (unsigned int) R_PARISC_PCREL22F)
2949 /* Now determine the call target, its name, value,
2955 if (r_indx < symtab_hdr->sh_info)
2957 /* It's a local symbol. */
2958 Elf_Internal_Sym *sym;
2959 Elf_Internal_Shdr *hdr;
2962 sym = local_syms + r_indx;
2963 if (ELF_ST_TYPE (sym->st_info) != STT_SECTION)
2964 sym_value = sym->st_value;
2965 shndx = sym->st_shndx;
2966 if (shndx < elf_numsections (input_bfd))
2968 hdr = elf_elfsections (input_bfd)[shndx];
2969 sym_sec = hdr->bfd_section;
2970 destination = (sym_value + irela->r_addend
2971 + sym_sec->output_offset
2972 + sym_sec->output_section->vma);
2977 /* It's an external symbol. */
2980 e_indx = r_indx - symtab_hdr->sh_info;
2981 hh = hppa_elf_hash_entry (elf_sym_hashes (input_bfd)[e_indx]);
2983 while (hh->eh.root.type == bfd_link_hash_indirect
2984 || hh->eh.root.type == bfd_link_hash_warning)
2985 hh = hppa_elf_hash_entry (hh->eh.root.u.i.link);
2987 if (hh->eh.root.type == bfd_link_hash_defined
2988 || hh->eh.root.type == bfd_link_hash_defweak)
2990 sym_sec = hh->eh.root.u.def.section;
2991 sym_value = hh->eh.root.u.def.value;
2992 if (sym_sec->output_section != NULL)
2993 destination = (sym_value + irela->r_addend
2994 + sym_sec->output_offset
2995 + sym_sec->output_section->vma);
2997 else if (hh->eh.root.type == bfd_link_hash_undefweak)
2999 if (! bfd_link_pic (info))
3002 else if (hh->eh.root.type == bfd_link_hash_undefined)
3004 if (! (info->unresolved_syms_in_objects == RM_IGNORE
3005 && (ELF_ST_VISIBILITY (hh->eh.other)
3007 && hh->eh.type != STT_PARISC_MILLI))
3012 bfd_set_error (bfd_error_bad_value);
3013 goto error_ret_free_internal;
3017 /* Determine what (if any) linker stub is needed. */
3018 stub_type = hppa_type_of_stub (section, irela, hh,
3020 if (stub_type == hppa_stub_none)
3023 /* Support for grouping stub sections. */
3024 id_sec = htab->stub_group[section->id].link_sec;
3026 /* Get the name of this stub. */
3027 stub_name = hppa_stub_name (id_sec, sym_sec, hh, irela);
3029 goto error_ret_free_internal;
3031 hsh = hppa_stub_hash_lookup (&htab->bstab,
3036 /* The proper stub has already been created. */
3041 hsh = hppa_add_stub (stub_name, section, htab);
3045 goto error_ret_free_internal;
3048 hsh->target_value = sym_value;
3049 hsh->target_section = sym_sec;
3050 hsh->stub_type = stub_type;
3051 if (bfd_link_pic (info))
3053 if (stub_type == hppa_stub_import)
3054 hsh->stub_type = hppa_stub_import_shared;
3055 else if (stub_type == hppa_stub_long_branch)
3056 hsh->stub_type = hppa_stub_long_branch_shared;
3059 stub_changed = TRUE;
3062 /* We're done with the internal relocs, free them. */
3063 if (elf_section_data (section)->relocs == NULL)
3064 free (internal_relocs);
3071 /* OK, we've added some stubs. Find out the new size of the
3073 for (stub_sec = htab->stub_bfd->sections;
3075 stub_sec = stub_sec->next)
3076 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
3079 bfd_hash_traverse (&htab->bstab, hppa_size_one_stub, htab);
3081 /* Ask the linker to do its stuff. */
3082 (*htab->layout_sections_again) ();
3083 stub_changed = FALSE;
3086 free (htab->all_local_syms);
3089 error_ret_free_local:
3090 free (htab->all_local_syms);
3094 /* For a final link, this function is called after we have sized the
3095 stubs to provide a value for __gp. */
3098 elf32_hppa_set_gp (bfd *abfd, struct bfd_link_info *info)
3100 struct bfd_link_hash_entry *h;
3101 asection *sec = NULL;
3103 struct elf32_hppa_link_hash_table *htab;
3105 htab = hppa_link_hash_table (info);
3109 h = bfd_link_hash_lookup (&htab->etab.root, "$global$", FALSE, FALSE, FALSE);
3112 && (h->type == bfd_link_hash_defined
3113 || h->type == bfd_link_hash_defweak))
3115 gp_val = h->u.def.value;
3116 sec = h->u.def.section;
3120 asection *splt = bfd_get_section_by_name (abfd, ".plt");
3121 asection *sgot = bfd_get_section_by_name (abfd, ".got");
3123 /* Choose to point our LTP at, in this order, one of .plt, .got,
3124 or .data, if these sections exist. In the case of choosing
3125 .plt try to make the LTP ideal for addressing anywhere in the
3126 .plt or .got with a 14 bit signed offset. Typically, the end
3127 of the .plt is the start of the .got, so choose .plt + 0x2000
3128 if either the .plt or .got is larger than 0x2000. If both
3129 the .plt and .got are smaller than 0x2000, choose the end of
3130 the .plt section. */
3131 sec = strcmp (bfd_get_target (abfd), "elf32-hppa-netbsd") == 0
3136 if (gp_val > 0x2000 || (sgot && sgot->size > 0x2000))
3146 if (strcmp (bfd_get_target (abfd), "elf32-hppa-netbsd") != 0)
3148 /* We know we don't have a .plt. If .got is large,
3150 if (sec->size > 0x2000)
3156 /* No .plt or .got. Who cares what the LTP is? */
3157 sec = bfd_get_section_by_name (abfd, ".data");
3163 h->type = bfd_link_hash_defined;
3164 h->u.def.value = gp_val;
3166 h->u.def.section = sec;
3168 h->u.def.section = bfd_abs_section_ptr;
3172 if (sec != NULL && sec->output_section != NULL)
3173 gp_val += sec->output_section->vma + sec->output_offset;
3175 elf_gp (abfd) = gp_val;
3179 /* Build all the stubs associated with the current output file. The
3180 stubs are kept in a hash table attached to the main linker hash
3181 table. We also set up the .plt entries for statically linked PIC
3182 functions here. This function is called via hppaelf_finish in the
3186 elf32_hppa_build_stubs (struct bfd_link_info *info)
3189 struct bfd_hash_table *table;
3190 struct elf32_hppa_link_hash_table *htab;
3192 htab = hppa_link_hash_table (info);
3196 for (stub_sec = htab->stub_bfd->sections;
3198 stub_sec = stub_sec->next)
3199 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0
3200 && stub_sec->size != 0)
3202 /* Allocate memory to hold the linker stubs. */
3203 stub_sec->contents = bfd_zalloc (htab->stub_bfd, stub_sec->size);
3204 if (stub_sec->contents == NULL)
3209 /* Build the stubs as directed by the stub hash table. */
3210 table = &htab->bstab;
3211 bfd_hash_traverse (table, hppa_build_one_stub, info);
3216 /* Return the base vma address which should be subtracted from the real
3217 address when resolving a dtpoff relocation.
3218 This is PT_TLS segment p_vaddr. */
3221 dtpoff_base (struct bfd_link_info *info)
3223 /* If tls_sec is NULL, we should have signalled an error already. */
3224 if (elf_hash_table (info)->tls_sec == NULL)
3226 return elf_hash_table (info)->tls_sec->vma;
3229 /* Return the relocation value for R_PARISC_TLS_TPOFF*.. */
3232 tpoff (struct bfd_link_info *info, bfd_vma address)
3234 struct elf_link_hash_table *htab = elf_hash_table (info);
3236 /* If tls_sec is NULL, we should have signalled an error already. */
3237 if (htab->tls_sec == NULL)
3239 /* hppa TLS ABI is variant I and static TLS block start just after
3240 tcbhead structure which has 2 pointer fields. */
3241 return (address - htab->tls_sec->vma
3242 + align_power ((bfd_vma) 8, htab->tls_sec->alignment_power));
3245 /* Perform a final link. */
3248 elf32_hppa_final_link (bfd *abfd, struct bfd_link_info *info)
3252 /* Invoke the regular ELF linker to do all the work. */
3253 if (!bfd_elf_final_link (abfd, info))
3256 /* If we're producing a final executable, sort the contents of the
3258 if (bfd_link_relocatable (info))
3261 /* Do not attempt to sort non-regular files. This is here
3262 especially for configure scripts and kernel builds which run
3263 tests with "ld [...] -o /dev/null". */
3264 if (stat (abfd->filename, &buf) != 0
3265 || !S_ISREG(buf.st_mode))
3268 return elf_hppa_sort_unwind (abfd);
3271 /* Record the lowest address for the data and text segments. */
3274 hppa_record_segment_addr (bfd *abfd, asection *section, void *data)
3276 struct elf32_hppa_link_hash_table *htab;
3278 htab = (struct elf32_hppa_link_hash_table*) data;
3282 if ((section->flags & (SEC_ALLOC | SEC_LOAD)) == (SEC_ALLOC | SEC_LOAD))
3285 Elf_Internal_Phdr *p;
3287 p = _bfd_elf_find_segment_containing_section (abfd, section->output_section);
3288 BFD_ASSERT (p != NULL);
3291 if ((section->flags & SEC_READONLY) != 0)
3293 if (value < htab->text_segment_base)
3294 htab->text_segment_base = value;
3298 if (value < htab->data_segment_base)
3299 htab->data_segment_base = value;
3304 /* Perform a relocation as part of a final link. */
3306 static bfd_reloc_status_type
3307 final_link_relocate (asection *input_section,
3309 const Elf_Internal_Rela *rela,
3311 struct elf32_hppa_link_hash_table *htab,
3313 struct elf32_hppa_link_hash_entry *hh,
3314 struct bfd_link_info *info)
3317 unsigned int r_type = ELF32_R_TYPE (rela->r_info);
3318 unsigned int orig_r_type = r_type;
3319 reloc_howto_type *howto = elf_hppa_howto_table + r_type;
3320 int r_format = howto->bitsize;
3321 enum hppa_reloc_field_selector_type_alt r_field;
3322 bfd *input_bfd = input_section->owner;
3323 bfd_vma offset = rela->r_offset;
3324 bfd_vma max_branch_offset = 0;
3325 bfd_byte *hit_data = contents + offset;
3326 bfd_signed_vma addend = rela->r_addend;
3328 struct elf32_hppa_stub_hash_entry *hsh = NULL;
3331 if (r_type == R_PARISC_NONE)
3332 return bfd_reloc_ok;
3334 insn = bfd_get_32 (input_bfd, hit_data);
3336 /* Find out where we are and where we're going. */
3337 location = (offset +
3338 input_section->output_offset +
3339 input_section->output_section->vma);
3341 /* If we are not building a shared library, convert DLTIND relocs to
3343 if (!bfd_link_pic (info))
3347 case R_PARISC_DLTIND21L:
3348 case R_PARISC_TLS_GD21L:
3349 case R_PARISC_TLS_LDM21L:
3350 case R_PARISC_TLS_IE21L:
3351 r_type = R_PARISC_DPREL21L;
3354 case R_PARISC_DLTIND14R:
3355 case R_PARISC_TLS_GD14R:
3356 case R_PARISC_TLS_LDM14R:
3357 case R_PARISC_TLS_IE14R:
3358 r_type = R_PARISC_DPREL14R;
3361 case R_PARISC_DLTIND14F:
3362 r_type = R_PARISC_DPREL14F;
3369 case R_PARISC_PCREL12F:
3370 case R_PARISC_PCREL17F:
3371 case R_PARISC_PCREL22F:
3372 /* If this call should go via the plt, find the import stub in
3375 || sym_sec->output_section == NULL
3377 && hh->eh.plt.offset != (bfd_vma) -1
3378 && hh->eh.dynindx != -1
3380 && (bfd_link_pic (info)
3381 || !hh->eh.def_regular
3382 || hh->eh.root.type == bfd_link_hash_defweak)))
3384 hsh = hppa_get_stub_entry (input_section, sym_sec,
3388 value = (hsh->stub_offset
3389 + hsh->stub_sec->output_offset
3390 + hsh->stub_sec->output_section->vma);
3393 else if (sym_sec == NULL && hh != NULL
3394 && hh->eh.root.type == bfd_link_hash_undefweak)
3396 /* It's OK if undefined weak. Calls to undefined weak
3397 symbols behave as if the "called" function
3398 immediately returns. We can thus call to a weak
3399 function without first checking whether the function
3405 return bfd_reloc_undefined;
3409 case R_PARISC_PCREL21L:
3410 case R_PARISC_PCREL17C:
3411 case R_PARISC_PCREL17R:
3412 case R_PARISC_PCREL14R:
3413 case R_PARISC_PCREL14F:
3414 case R_PARISC_PCREL32:
3415 /* Make it a pc relative offset. */
3420 case R_PARISC_DPREL21L:
3421 case R_PARISC_DPREL14R:
3422 case R_PARISC_DPREL14F:
3423 /* Convert instructions that use the linkage table pointer (r19) to
3424 instructions that use the global data pointer (dp). This is the
3425 most efficient way of using PIC code in an incomplete executable,
3426 but the user must follow the standard runtime conventions for
3427 accessing data for this to work. */
3428 if (orig_r_type != r_type)
3430 if (r_type == R_PARISC_DPREL21L)
3432 /* GCC sometimes uses a register other than r19 for the
3433 operation, so we must convert any addil instruction
3434 that uses this relocation. */
3435 if ((insn & 0xfc000000) == ((int) OP_ADDIL << 26))
3438 /* We must have a ldil instruction. It's too hard to find
3439 and convert the associated add instruction, so issue an
3442 /* xgettext:c-format */
3443 (_("%B(%A+0x%lx): %s fixup for insn 0x%x is not supported in a non-shared link"),
3450 else if (r_type == R_PARISC_DPREL14F)
3452 /* This must be a format 1 load/store. Change the base
3454 insn = (insn & 0xfc1ffff) | (27 << 21);
3458 /* For all the DP relative relocations, we need to examine the symbol's
3459 section. If it has no section or if it's a code section, then
3460 "data pointer relative" makes no sense. In that case we don't
3461 adjust the "value", and for 21 bit addil instructions, we change the
3462 source addend register from %dp to %r0. This situation commonly
3463 arises for undefined weak symbols and when a variable's "constness"
3464 is declared differently from the way the variable is defined. For
3465 instance: "extern int foo" with foo defined as "const int foo". */
3466 if (sym_sec == NULL || (sym_sec->flags & SEC_CODE) != 0)
3468 if ((insn & ((0x3f << 26) | (0x1f << 21)))
3469 == (((int) OP_ADDIL << 26) | (27 << 21)))
3471 insn &= ~ (0x1f << 21);
3473 /* Now try to make things easy for the dynamic linker. */
3479 case R_PARISC_DLTIND21L:
3480 case R_PARISC_DLTIND14R:
3481 case R_PARISC_DLTIND14F:
3482 case R_PARISC_TLS_GD21L:
3483 case R_PARISC_TLS_LDM21L:
3484 case R_PARISC_TLS_IE21L:
3485 case R_PARISC_TLS_GD14R:
3486 case R_PARISC_TLS_LDM14R:
3487 case R_PARISC_TLS_IE14R:
3488 value -= elf_gp (input_section->output_section->owner);
3491 case R_PARISC_SEGREL32:
3492 if ((sym_sec->flags & SEC_CODE) != 0)
3493 value -= htab->text_segment_base;
3495 value -= htab->data_segment_base;
3504 case R_PARISC_DIR32:
3505 case R_PARISC_DIR14F:
3506 case R_PARISC_DIR17F:
3507 case R_PARISC_PCREL17C:
3508 case R_PARISC_PCREL14F:
3509 case R_PARISC_PCREL32:
3510 case R_PARISC_DPREL14F:
3511 case R_PARISC_PLABEL32:
3512 case R_PARISC_DLTIND14F:
3513 case R_PARISC_SEGBASE:
3514 case R_PARISC_SEGREL32:
3515 case R_PARISC_TLS_DTPMOD32:
3516 case R_PARISC_TLS_DTPOFF32:
3517 case R_PARISC_TLS_TPREL32:
3521 case R_PARISC_DLTIND21L:
3522 case R_PARISC_PCREL21L:
3523 case R_PARISC_PLABEL21L:
3527 case R_PARISC_DIR21L:
3528 case R_PARISC_DPREL21L:
3529 case R_PARISC_TLS_GD21L:
3530 case R_PARISC_TLS_LDM21L:
3531 case R_PARISC_TLS_LDO21L:
3532 case R_PARISC_TLS_IE21L:
3533 case R_PARISC_TLS_LE21L:
3537 case R_PARISC_PCREL17R:
3538 case R_PARISC_PCREL14R:
3539 case R_PARISC_PLABEL14R:
3540 case R_PARISC_DLTIND14R:
3544 case R_PARISC_DIR17R:
3545 case R_PARISC_DIR14R:
3546 case R_PARISC_DPREL14R:
3547 case R_PARISC_TLS_GD14R:
3548 case R_PARISC_TLS_LDM14R:
3549 case R_PARISC_TLS_LDO14R:
3550 case R_PARISC_TLS_IE14R:
3551 case R_PARISC_TLS_LE14R:
3555 case R_PARISC_PCREL12F:
3556 case R_PARISC_PCREL17F:
3557 case R_PARISC_PCREL22F:
3560 if (r_type == (unsigned int) R_PARISC_PCREL17F)
3562 max_branch_offset = (1 << (17-1)) << 2;
3564 else if (r_type == (unsigned int) R_PARISC_PCREL12F)
3566 max_branch_offset = (1 << (12-1)) << 2;
3570 max_branch_offset = (1 << (22-1)) << 2;
3573 /* sym_sec is NULL on undefined weak syms or when shared on
3574 undefined syms. We've already checked for a stub for the
3575 shared undefined case. */
3576 if (sym_sec == NULL)
3579 /* If the branch is out of reach, then redirect the
3580 call to the local stub for this function. */
3581 if (value + addend + max_branch_offset >= 2*max_branch_offset)
3583 hsh = hppa_get_stub_entry (input_section, sym_sec,
3586 return bfd_reloc_undefined;
3588 /* Munge up the value and addend so that we call the stub
3589 rather than the procedure directly. */
3590 value = (hsh->stub_offset
3591 + hsh->stub_sec->output_offset
3592 + hsh->stub_sec->output_section->vma
3598 /* Something we don't know how to handle. */
3600 return bfd_reloc_notsupported;
3603 /* Make sure we can reach the stub. */
3604 if (max_branch_offset != 0
3605 && value + addend + max_branch_offset >= 2*max_branch_offset)
3608 /* xgettext:c-format */
3609 (_("%B(%A+0x%lx): cannot reach %s, recompile with -ffunction-sections"),
3613 hsh->bh_root.string);
3614 bfd_set_error (bfd_error_bad_value);
3615 return bfd_reloc_notsupported;
3618 val = hppa_field_adjust (value, addend, r_field);
3622 case R_PARISC_PCREL12F:
3623 case R_PARISC_PCREL17C:
3624 case R_PARISC_PCREL17F:
3625 case R_PARISC_PCREL17R:
3626 case R_PARISC_PCREL22F:
3627 case R_PARISC_DIR17F:
3628 case R_PARISC_DIR17R:
3629 /* This is a branch. Divide the offset by four.
3630 Note that we need to decide whether it's a branch or
3631 otherwise by inspecting the reloc. Inspecting insn won't
3632 work as insn might be from a .word directive. */
3640 insn = hppa_rebuild_insn (insn, val, r_format);
3642 /* Update the instruction word. */
3643 bfd_put_32 (input_bfd, (bfd_vma) insn, hit_data);
3644 return bfd_reloc_ok;
3647 /* Relocate an HPPA ELF section. */
3650 elf32_hppa_relocate_section (bfd *output_bfd,
3651 struct bfd_link_info *info,
3653 asection *input_section,
3655 Elf_Internal_Rela *relocs,
3656 Elf_Internal_Sym *local_syms,
3657 asection **local_sections)
3659 bfd_vma *local_got_offsets;
3660 struct elf32_hppa_link_hash_table *htab;
3661 Elf_Internal_Shdr *symtab_hdr;
3662 Elf_Internal_Rela *rela;
3663 Elf_Internal_Rela *relend;
3665 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
3667 htab = hppa_link_hash_table (info);
3671 local_got_offsets = elf_local_got_offsets (input_bfd);
3674 relend = relocs + input_section->reloc_count;
3675 for (; rela < relend; rela++)
3677 unsigned int r_type;
3678 reloc_howto_type *howto;
3679 unsigned int r_symndx;
3680 struct elf32_hppa_link_hash_entry *hh;
3681 Elf_Internal_Sym *sym;
3684 bfd_reloc_status_type rstatus;
3685 const char *sym_name;
3687 bfd_boolean warned_undef;
3689 r_type = ELF32_R_TYPE (rela->r_info);
3690 if (r_type >= (unsigned int) R_PARISC_UNIMPLEMENTED)
3692 bfd_set_error (bfd_error_bad_value);
3695 if (r_type == (unsigned int) R_PARISC_GNU_VTENTRY
3696 || r_type == (unsigned int) R_PARISC_GNU_VTINHERIT)
3699 r_symndx = ELF32_R_SYM (rela->r_info);
3703 warned_undef = FALSE;
3704 if (r_symndx < symtab_hdr->sh_info)
3706 /* This is a local symbol, h defaults to NULL. */
3707 sym = local_syms + r_symndx;
3708 sym_sec = local_sections[r_symndx];
3709 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sym_sec, rela);
3713 struct elf_link_hash_entry *eh;
3714 bfd_boolean unresolved_reloc, ignored;
3715 struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (input_bfd);
3717 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rela,
3718 r_symndx, symtab_hdr, sym_hashes,
3719 eh, sym_sec, relocation,
3720 unresolved_reloc, warned_undef,
3723 if (!bfd_link_relocatable (info)
3725 && eh->root.type != bfd_link_hash_defined
3726 && eh->root.type != bfd_link_hash_defweak
3727 && eh->root.type != bfd_link_hash_undefweak)
3729 if (info->unresolved_syms_in_objects == RM_IGNORE
3730 && ELF_ST_VISIBILITY (eh->other) == STV_DEFAULT
3731 && eh->type == STT_PARISC_MILLI)
3733 (*info->callbacks->undefined_symbol)
3734 (info, eh_name (eh), input_bfd,
3735 input_section, rela->r_offset, FALSE);
3736 warned_undef = TRUE;
3739 hh = hppa_elf_hash_entry (eh);
3742 if (sym_sec != NULL && discarded_section (sym_sec))
3743 RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section,
3745 elf_hppa_howto_table + r_type, 0,
3748 if (bfd_link_relocatable (info))
3751 /* Do any required modifications to the relocation value, and
3752 determine what types of dynamic info we need to output, if
3757 case R_PARISC_DLTIND14F:
3758 case R_PARISC_DLTIND14R:
3759 case R_PARISC_DLTIND21L:
3762 bfd_boolean do_got = 0;
3764 /* Relocation is to the entry for this symbol in the
3765 global offset table. */
3770 off = hh->eh.got.offset;
3771 dyn = htab->etab.dynamic_sections_created;
3772 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn,
3773 bfd_link_pic (info),
3776 /* If we aren't going to call finish_dynamic_symbol,
3777 then we need to handle initialisation of the .got
3778 entry and create needed relocs here. Since the
3779 offset must always be a multiple of 4, we use the
3780 least significant bit to record whether we have
3781 initialised it already. */
3786 hh->eh.got.offset |= 1;
3793 /* Local symbol case. */
3794 if (local_got_offsets == NULL)
3797 off = local_got_offsets[r_symndx];
3799 /* The offset must always be a multiple of 4. We use
3800 the least significant bit to record whether we have
3801 already generated the necessary reloc. */
3806 local_got_offsets[r_symndx] |= 1;
3813 if (bfd_link_pic (info))
3815 /* Output a dynamic relocation for this GOT entry.
3816 In this case it is relative to the base of the
3817 object because the symbol index is zero. */
3818 Elf_Internal_Rela outrel;
3820 asection *sec = htab->etab.srelgot;
3822 outrel.r_offset = (off
3823 + htab->etab.sgot->output_offset
3824 + htab->etab.sgot->output_section->vma);
3825 outrel.r_info = ELF32_R_INFO (0, R_PARISC_DIR32);
3826 outrel.r_addend = relocation;
3827 loc = sec->contents;
3828 loc += sec->reloc_count++ * sizeof (Elf32_External_Rela);
3829 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
3832 bfd_put_32 (output_bfd, relocation,
3833 htab->etab.sgot->contents + off);
3836 if (off >= (bfd_vma) -2)
3839 /* Add the base of the GOT to the relocation value. */
3841 + htab->etab.sgot->output_offset
3842 + htab->etab.sgot->output_section->vma);
3846 case R_PARISC_SEGREL32:
3847 /* If this is the first SEGREL relocation, then initialize
3848 the segment base values. */
3849 if (htab->text_segment_base == (bfd_vma) -1)
3850 bfd_map_over_sections (output_bfd, hppa_record_segment_addr, htab);
3853 case R_PARISC_PLABEL14R:
3854 case R_PARISC_PLABEL21L:
3855 case R_PARISC_PLABEL32:
3856 if (htab->etab.dynamic_sections_created)
3859 bfd_boolean do_plt = 0;
3860 /* If we have a global symbol with a PLT slot, then
3861 redirect this relocation to it. */
3864 off = hh->eh.plt.offset;
3865 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (1,
3866 bfd_link_pic (info),
3869 /* In a non-shared link, adjust_dynamic_symbols
3870 isn't called for symbols forced local. We
3871 need to write out the plt entry here. */
3876 hh->eh.plt.offset |= 1;
3883 bfd_vma *local_plt_offsets;
3885 if (local_got_offsets == NULL)
3888 local_plt_offsets = local_got_offsets + symtab_hdr->sh_info;
3889 off = local_plt_offsets[r_symndx];
3891 /* As for the local .got entry case, we use the last
3892 bit to record whether we've already initialised
3893 this local .plt entry. */
3898 local_plt_offsets[r_symndx] |= 1;
3905 if (bfd_link_pic (info))
3907 /* Output a dynamic IPLT relocation for this
3909 Elf_Internal_Rela outrel;
3911 asection *s = htab->etab.srelplt;
3913 outrel.r_offset = (off
3914 + htab->etab.splt->output_offset
3915 + htab->etab.splt->output_section->vma);
3916 outrel.r_info = ELF32_R_INFO (0, R_PARISC_IPLT);
3917 outrel.r_addend = relocation;
3919 loc += s->reloc_count++ * sizeof (Elf32_External_Rela);
3920 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
3924 bfd_put_32 (output_bfd,
3926 htab->etab.splt->contents + off);
3927 bfd_put_32 (output_bfd,
3928 elf_gp (htab->etab.splt->output_section->owner),
3929 htab->etab.splt->contents + off + 4);
3933 if (off >= (bfd_vma) -2)
3936 /* PLABELs contain function pointers. Relocation is to
3937 the entry for the function in the .plt. The magic +2
3938 offset signals to $$dyncall that the function pointer
3939 is in the .plt and thus has a gp pointer too.
3940 Exception: Undefined PLABELs should have a value of
3943 || (hh->eh.root.type != bfd_link_hash_undefweak
3944 && hh->eh.root.type != bfd_link_hash_undefined))
3947 + htab->etab.splt->output_offset
3948 + htab->etab.splt->output_section->vma
3955 case R_PARISC_DIR17F:
3956 case R_PARISC_DIR17R:
3957 case R_PARISC_DIR14F:
3958 case R_PARISC_DIR14R:
3959 case R_PARISC_DIR21L:
3960 case R_PARISC_DPREL14F:
3961 case R_PARISC_DPREL14R:
3962 case R_PARISC_DPREL21L:
3963 case R_PARISC_DIR32:
3964 if ((input_section->flags & SEC_ALLOC) == 0)
3967 /* The reloc types handled here and this conditional
3968 expression must match the code in ..check_relocs and
3969 allocate_dynrelocs. ie. We need exactly the same condition
3970 as in ..check_relocs, with some extra conditions (dynindx
3971 test in this case) to cater for relocs removed by
3972 allocate_dynrelocs. If you squint, the non-shared test
3973 here does indeed match the one in ..check_relocs, the
3974 difference being that here we test DEF_DYNAMIC as well as
3975 !DEF_REGULAR. All common syms end up with !DEF_REGULAR,
3976 which is why we can't use just that test here.
3977 Conversely, DEF_DYNAMIC can't be used in check_relocs as
3978 there all files have not been loaded. */
3979 if ((bfd_link_pic (info)
3981 || ELF_ST_VISIBILITY (hh->eh.other) == STV_DEFAULT
3982 || hh->eh.root.type != bfd_link_hash_undefweak)
3983 && (IS_ABSOLUTE_RELOC (r_type)
3984 || !SYMBOL_CALLS_LOCAL (info, &hh->eh)))
3985 || (!bfd_link_pic (info)
3987 && hh->eh.dynindx != -1
3988 && !hh->eh.non_got_ref
3989 && ((ELIMINATE_COPY_RELOCS
3990 && hh->eh.def_dynamic
3991 && !hh->eh.def_regular)
3992 || hh->eh.root.type == bfd_link_hash_undefweak
3993 || hh->eh.root.type == bfd_link_hash_undefined)))
3995 Elf_Internal_Rela outrel;
4000 /* When generating a shared object, these relocations
4001 are copied into the output file to be resolved at run
4004 outrel.r_addend = rela->r_addend;
4006 _bfd_elf_section_offset (output_bfd, info, input_section,
4008 skip = (outrel.r_offset == (bfd_vma) -1
4009 || outrel.r_offset == (bfd_vma) -2);
4010 outrel.r_offset += (input_section->output_offset
4011 + input_section->output_section->vma);
4015 memset (&outrel, 0, sizeof (outrel));
4018 && hh->eh.dynindx != -1
4020 || !IS_ABSOLUTE_RELOC (r_type)
4021 || !bfd_link_pic (info)
4022 || !SYMBOLIC_BIND (info, &hh->eh)
4023 || !hh->eh.def_regular))
4025 outrel.r_info = ELF32_R_INFO (hh->eh.dynindx, r_type);
4027 else /* It's a local symbol, or one marked to become local. */
4031 /* Add the absolute offset of the symbol. */
4032 outrel.r_addend += relocation;
4034 /* Global plabels need to be processed by the
4035 dynamic linker so that functions have at most one
4036 fptr. For this reason, we need to differentiate
4037 between global and local plabels, which we do by
4038 providing the function symbol for a global plabel
4039 reloc, and no symbol for local plabels. */
4042 && sym_sec->output_section != NULL
4043 && ! bfd_is_abs_section (sym_sec))
4047 osec = sym_sec->output_section;
4048 indx = elf_section_data (osec)->dynindx;
4051 osec = htab->etab.text_index_section;
4052 indx = elf_section_data (osec)->dynindx;
4054 BFD_ASSERT (indx != 0);
4056 /* We are turning this relocation into one
4057 against a section symbol, so subtract out the
4058 output section's address but not the offset
4059 of the input section in the output section. */
4060 outrel.r_addend -= osec->vma;
4063 outrel.r_info = ELF32_R_INFO (indx, r_type);
4065 sreloc = elf_section_data (input_section)->sreloc;
4069 loc = sreloc->contents;
4070 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela);
4071 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
4075 case R_PARISC_TLS_LDM21L:
4076 case R_PARISC_TLS_LDM14R:
4080 off = htab->tls_ldm_got.offset;
4085 Elf_Internal_Rela outrel;
4088 outrel.r_offset = (off
4089 + htab->etab.sgot->output_section->vma
4090 + htab->etab.sgot->output_offset);
4091 outrel.r_addend = 0;
4092 outrel.r_info = ELF32_R_INFO (0, R_PARISC_TLS_DTPMOD32);
4093 loc = htab->etab.srelgot->contents;
4094 loc += htab->etab.srelgot->reloc_count++ * sizeof (Elf32_External_Rela);
4096 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
4097 htab->tls_ldm_got.offset |= 1;
4100 /* Add the base of the GOT to the relocation value. */
4102 + htab->etab.sgot->output_offset
4103 + htab->etab.sgot->output_section->vma);
4108 case R_PARISC_TLS_LDO21L:
4109 case R_PARISC_TLS_LDO14R:
4110 relocation -= dtpoff_base (info);
4113 case R_PARISC_TLS_GD21L:
4114 case R_PARISC_TLS_GD14R:
4115 case R_PARISC_TLS_IE21L:
4116 case R_PARISC_TLS_IE14R:
4126 dyn = htab->etab.dynamic_sections_created;
4128 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn,
4129 bfd_link_pic (info),
4131 && (!bfd_link_pic (info)
4132 || !SYMBOL_REFERENCES_LOCAL (info, &hh->eh)))
4134 indx = hh->eh.dynindx;
4136 off = hh->eh.got.offset;
4137 tls_type = hh->tls_type;
4141 off = local_got_offsets[r_symndx];
4142 tls_type = hppa_elf_local_got_tls_type (input_bfd)[r_symndx];
4145 if (tls_type == GOT_UNKNOWN)
4152 bfd_boolean need_relocs = FALSE;
4153 Elf_Internal_Rela outrel;
4154 bfd_byte *loc = NULL;
4157 /* The GOT entries have not been initialized yet. Do it
4158 now, and emit any relocations. If both an IE GOT and a
4159 GD GOT are necessary, we emit the GD first. */
4161 if ((bfd_link_pic (info) || indx != 0)
4163 || ELF_ST_VISIBILITY (hh->eh.other) == STV_DEFAULT
4164 || hh->eh.root.type != bfd_link_hash_undefweak))
4167 loc = htab->etab.srelgot->contents;
4168 /* FIXME (CAO): Should this be reloc_count++ ? */
4169 loc += htab->etab.srelgot->reloc_count * sizeof (Elf32_External_Rela);
4172 if (tls_type & GOT_TLS_GD)
4176 outrel.r_offset = (cur_off
4177 + htab->etab.sgot->output_section->vma
4178 + htab->etab.sgot->output_offset);
4179 outrel.r_info = ELF32_R_INFO (indx,R_PARISC_TLS_DTPMOD32);
4180 outrel.r_addend = 0;
4181 bfd_put_32 (output_bfd, 0, htab->etab.sgot->contents + cur_off);
4182 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
4183 htab->etab.srelgot->reloc_count++;
4184 loc += sizeof (Elf32_External_Rela);
4187 bfd_put_32 (output_bfd, relocation - dtpoff_base (info),
4188 htab->etab.sgot->contents + cur_off + 4);
4191 bfd_put_32 (output_bfd, 0,
4192 htab->etab.sgot->contents + cur_off + 4);
4193 outrel.r_info = ELF32_R_INFO (indx, R_PARISC_TLS_DTPOFF32);
4194 outrel.r_offset += 4;
4195 bfd_elf32_swap_reloca_out (output_bfd, &outrel,loc);
4196 htab->etab.srelgot->reloc_count++;
4197 loc += sizeof (Elf32_External_Rela);
4202 /* If we are not emitting relocations for a
4203 general dynamic reference, then we must be in a
4204 static link or an executable link with the
4205 symbol binding locally. Mark it as belonging
4206 to module 1, the executable. */
4207 bfd_put_32 (output_bfd, 1,
4208 htab->etab.sgot->contents + cur_off);
4209 bfd_put_32 (output_bfd, relocation - dtpoff_base (info),
4210 htab->etab.sgot->contents + cur_off + 4);
4217 if (tls_type & GOT_TLS_IE)
4221 outrel.r_offset = (cur_off
4222 + htab->etab.sgot->output_section->vma
4223 + htab->etab.sgot->output_offset);
4224 outrel.r_info = ELF32_R_INFO (indx, R_PARISC_TLS_TPREL32);
4227 outrel.r_addend = relocation - dtpoff_base (info);
4229 outrel.r_addend = 0;
4231 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
4232 htab->etab.srelgot->reloc_count++;
4233 loc += sizeof (Elf32_External_Rela);
4236 bfd_put_32 (output_bfd, tpoff (info, relocation),
4237 htab->etab.sgot->contents + cur_off);
4243 hh->eh.got.offset |= 1;
4245 local_got_offsets[r_symndx] |= 1;
4248 if ((tls_type & GOT_TLS_GD)
4249 && r_type != R_PARISC_TLS_GD21L
4250 && r_type != R_PARISC_TLS_GD14R)
4251 off += 2 * GOT_ENTRY_SIZE;
4253 /* Add the base of the GOT to the relocation value. */
4255 + htab->etab.sgot->output_offset
4256 + htab->etab.sgot->output_section->vma);
4261 case R_PARISC_TLS_LE21L:
4262 case R_PARISC_TLS_LE14R:
4264 relocation = tpoff (info, relocation);
4273 rstatus = final_link_relocate (input_section, contents, rela, relocation,
4274 htab, sym_sec, hh, info);
4276 if (rstatus == bfd_reloc_ok)
4280 sym_name = hh_name (hh);
4283 sym_name = bfd_elf_string_from_elf_section (input_bfd,
4284 symtab_hdr->sh_link,
4286 if (sym_name == NULL)
4288 if (*sym_name == '\0')
4289 sym_name = bfd_section_name (input_bfd, sym_sec);
4292 howto = elf_hppa_howto_table + r_type;
4294 if (rstatus == bfd_reloc_undefined || rstatus == bfd_reloc_notsupported)
4296 if (rstatus == bfd_reloc_notsupported || !warned_undef)
4299 /* xgettext:c-format */
4300 (_("%B(%A+0x%lx): cannot handle %s for %s"),
4303 (long) rela->r_offset,
4306 bfd_set_error (bfd_error_bad_value);
4311 (*info->callbacks->reloc_overflow)
4312 (info, (hh ? &hh->eh.root : NULL), sym_name, howto->name,
4313 (bfd_vma) 0, input_bfd, input_section, rela->r_offset);
4319 /* Finish up dynamic symbol handling. We set the contents of various
4320 dynamic sections here. */
4323 elf32_hppa_finish_dynamic_symbol (bfd *output_bfd,
4324 struct bfd_link_info *info,
4325 struct elf_link_hash_entry *eh,
4326 Elf_Internal_Sym *sym)
4328 struct elf32_hppa_link_hash_table *htab;
4329 Elf_Internal_Rela rela;
4332 htab = hppa_link_hash_table (info);
4336 if (eh->plt.offset != (bfd_vma) -1)
4340 if (eh->plt.offset & 1)
4343 /* This symbol has an entry in the procedure linkage table. Set
4346 The format of a plt entry is
4351 if (eh->root.type == bfd_link_hash_defined
4352 || eh->root.type == bfd_link_hash_defweak)
4354 value = eh->root.u.def.value;
4355 if (eh->root.u.def.section->output_section != NULL)
4356 value += (eh->root.u.def.section->output_offset
4357 + eh->root.u.def.section->output_section->vma);
4360 /* Create a dynamic IPLT relocation for this entry. */
4361 rela.r_offset = (eh->plt.offset
4362 + htab->etab.splt->output_offset
4363 + htab->etab.splt->output_section->vma);
4364 if (eh->dynindx != -1)
4366 rela.r_info = ELF32_R_INFO (eh->dynindx, R_PARISC_IPLT);
4371 /* This symbol has been marked to become local, and is
4372 used by a plabel so must be kept in the .plt. */
4373 rela.r_info = ELF32_R_INFO (0, R_PARISC_IPLT);
4374 rela.r_addend = value;
4377 loc = htab->etab.srelplt->contents;
4378 loc += htab->etab.srelplt->reloc_count++ * sizeof (Elf32_External_Rela);
4379 bfd_elf32_swap_reloca_out (htab->etab.splt->output_section->owner, &rela, loc);
4381 if (!eh->def_regular)
4383 /* Mark the symbol as undefined, rather than as defined in
4384 the .plt section. Leave the value alone. */
4385 sym->st_shndx = SHN_UNDEF;
4389 if (eh->got.offset != (bfd_vma) -1
4390 && (hppa_elf_hash_entry (eh)->tls_type & GOT_TLS_GD) == 0
4391 && (hppa_elf_hash_entry (eh)->tls_type & GOT_TLS_IE) == 0)
4393 /* This symbol has an entry in the global offset table. Set it
4396 rela.r_offset = ((eh->got.offset &~ (bfd_vma) 1)
4397 + htab->etab.sgot->output_offset
4398 + htab->etab.sgot->output_section->vma);
4400 /* If this is a -Bsymbolic link and the symbol is defined
4401 locally or was forced to be local because of a version file,
4402 we just want to emit a RELATIVE reloc. The entry in the
4403 global offset table will already have been initialized in the
4404 relocate_section function. */
4405 if (bfd_link_pic (info)
4406 && (SYMBOLIC_BIND (info, eh) || eh->dynindx == -1)
4409 rela.r_info = ELF32_R_INFO (0, R_PARISC_DIR32);
4410 rela.r_addend = (eh->root.u.def.value
4411 + eh->root.u.def.section->output_offset
4412 + eh->root.u.def.section->output_section->vma);
4416 if ((eh->got.offset & 1) != 0)
4419 bfd_put_32 (output_bfd, 0, htab->etab.sgot->contents + (eh->got.offset & ~1));
4420 rela.r_info = ELF32_R_INFO (eh->dynindx, R_PARISC_DIR32);
4424 loc = htab->etab.srelgot->contents;
4425 loc += htab->etab.srelgot->reloc_count++ * sizeof (Elf32_External_Rela);
4426 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
4433 /* This symbol needs a copy reloc. Set it up. */
4435 if (! (eh->dynindx != -1
4436 && (eh->root.type == bfd_link_hash_defined
4437 || eh->root.type == bfd_link_hash_defweak)))
4440 rela.r_offset = (eh->root.u.def.value
4441 + eh->root.u.def.section->output_offset
4442 + eh->root.u.def.section->output_section->vma);
4444 rela.r_info = ELF32_R_INFO (eh->dynindx, R_PARISC_COPY);
4445 if ((eh->root.u.def.section->flags & SEC_READONLY) != 0)
4446 sec = htab->etab.sreldynrelro;
4448 sec = htab->etab.srelbss;
4449 loc = sec->contents + sec->reloc_count++ * sizeof (Elf32_External_Rela);
4450 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
4453 /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. */
4454 if (eh == htab->etab.hdynamic || eh == htab->etab.hgot)
4456 sym->st_shndx = SHN_ABS;
4462 /* Used to decide how to sort relocs in an optimal manner for the
4463 dynamic linker, before writing them out. */
4465 static enum elf_reloc_type_class
4466 elf32_hppa_reloc_type_class (const struct bfd_link_info *info ATTRIBUTE_UNUSED,
4467 const asection *rel_sec ATTRIBUTE_UNUSED,
4468 const Elf_Internal_Rela *rela)
4470 /* Handle TLS relocs first; we don't want them to be marked
4471 relative by the "if (ELF32_R_SYM (rela->r_info) == STN_UNDEF)"
4473 switch ((int) ELF32_R_TYPE (rela->r_info))
4475 case R_PARISC_TLS_DTPMOD32:
4476 case R_PARISC_TLS_DTPOFF32:
4477 case R_PARISC_TLS_TPREL32:
4478 return reloc_class_normal;
4481 if (ELF32_R_SYM (rela->r_info) == STN_UNDEF)
4482 return reloc_class_relative;
4484 switch ((int) ELF32_R_TYPE (rela->r_info))
4487 return reloc_class_plt;
4489 return reloc_class_copy;
4491 return reloc_class_normal;
4495 /* Finish up the dynamic sections. */
4498 elf32_hppa_finish_dynamic_sections (bfd *output_bfd,
4499 struct bfd_link_info *info)
4502 struct elf32_hppa_link_hash_table *htab;
4506 htab = hppa_link_hash_table (info);
4510 dynobj = htab->etab.dynobj;
4512 sgot = htab->etab.sgot;
4513 /* A broken linker script might have discarded the dynamic sections.
4514 Catch this here so that we do not seg-fault later on. */
4515 if (sgot != NULL && bfd_is_abs_section (sgot->output_section))
4518 sdyn = bfd_get_linker_section (dynobj, ".dynamic");
4520 if (htab->etab.dynamic_sections_created)
4522 Elf32_External_Dyn *dyncon, *dynconend;
4527 dyncon = (Elf32_External_Dyn *) sdyn->contents;
4528 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
4529 for (; dyncon < dynconend; dyncon++)
4531 Elf_Internal_Dyn dyn;
4534 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
4542 /* Use PLTGOT to set the GOT register. */
4543 dyn.d_un.d_ptr = elf_gp (output_bfd);
4547 s = htab->etab.srelplt;
4548 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
4552 s = htab->etab.srelplt;
4553 dyn.d_un.d_val = s->size;
4557 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
4561 if (sgot != NULL && sgot->size != 0)
4563 /* Fill in the first entry in the global offset table.
4564 We use it to point to our dynamic section, if we have one. */
4565 bfd_put_32 (output_bfd,
4566 sdyn ? sdyn->output_section->vma + sdyn->output_offset : 0,
4569 /* The second entry is reserved for use by the dynamic linker. */
4570 memset (sgot->contents + GOT_ENTRY_SIZE, 0, GOT_ENTRY_SIZE);
4572 /* Set .got entry size. */
4573 elf_section_data (sgot->output_section)
4574 ->this_hdr.sh_entsize = GOT_ENTRY_SIZE;
4577 if (htab->etab.splt != NULL && htab->etab.splt->size != 0)
4579 /* Set plt entry size to 0 instead of PLT_ENTRY_SIZE, since we add the
4580 plt stubs and as such the section does not hold a table of fixed-size
4582 elf_section_data (htab->etab.splt->output_section)->this_hdr.sh_entsize = 0;
4584 if (htab->need_plt_stub)
4586 /* Set up the .plt stub. */
4587 memcpy (htab->etab.splt->contents
4588 + htab->etab.splt->size - sizeof (plt_stub),
4589 plt_stub, sizeof (plt_stub));
4591 if ((htab->etab.splt->output_offset
4592 + htab->etab.splt->output_section->vma
4593 + htab->etab.splt->size)
4594 != (sgot->output_offset
4595 + sgot->output_section->vma))
4598 (_(".got section not immediately after .plt section"));
4607 /* Called when writing out an object file to decide the type of a
4610 elf32_hppa_elf_get_symbol_type (Elf_Internal_Sym *elf_sym, int type)
4612 if (ELF_ST_TYPE (elf_sym->st_info) == STT_PARISC_MILLI)
4613 return STT_PARISC_MILLI;
4618 /* Misc BFD support code. */
4619 #define bfd_elf32_bfd_is_local_label_name elf_hppa_is_local_label_name
4620 #define bfd_elf32_bfd_reloc_type_lookup elf_hppa_reloc_type_lookup
4621 #define bfd_elf32_bfd_reloc_name_lookup elf_hppa_reloc_name_lookup
4622 #define elf_info_to_howto elf_hppa_info_to_howto
4623 #define elf_info_to_howto_rel elf_hppa_info_to_howto_rel
4625 /* Stuff for the BFD linker. */
4626 #define bfd_elf32_bfd_final_link elf32_hppa_final_link
4627 #define bfd_elf32_bfd_link_hash_table_create elf32_hppa_link_hash_table_create
4628 #define elf_backend_adjust_dynamic_symbol elf32_hppa_adjust_dynamic_symbol
4629 #define elf_backend_copy_indirect_symbol elf32_hppa_copy_indirect_symbol
4630 #define elf_backend_check_relocs elf32_hppa_check_relocs
4631 #define elf_backend_create_dynamic_sections elf32_hppa_create_dynamic_sections
4632 #define elf_backend_fake_sections elf_hppa_fake_sections
4633 #define elf_backend_relocate_section elf32_hppa_relocate_section
4634 #define elf_backend_hide_symbol elf32_hppa_hide_symbol
4635 #define elf_backend_finish_dynamic_symbol elf32_hppa_finish_dynamic_symbol
4636 #define elf_backend_finish_dynamic_sections elf32_hppa_finish_dynamic_sections
4637 #define elf_backend_size_dynamic_sections elf32_hppa_size_dynamic_sections
4638 #define elf_backend_init_index_section _bfd_elf_init_1_index_section
4639 #define elf_backend_gc_mark_hook elf32_hppa_gc_mark_hook
4640 #define elf_backend_gc_sweep_hook elf32_hppa_gc_sweep_hook
4641 #define elf_backend_grok_prstatus elf32_hppa_grok_prstatus
4642 #define elf_backend_grok_psinfo elf32_hppa_grok_psinfo
4643 #define elf_backend_object_p elf32_hppa_object_p
4644 #define elf_backend_final_write_processing elf_hppa_final_write_processing
4645 #define elf_backend_get_symbol_type elf32_hppa_elf_get_symbol_type
4646 #define elf_backend_reloc_type_class elf32_hppa_reloc_type_class
4647 #define elf_backend_action_discarded elf_hppa_action_discarded
4649 #define elf_backend_can_gc_sections 1
4650 #define elf_backend_can_refcount 1
4651 #define elf_backend_plt_alignment 2
4652 #define elf_backend_want_got_plt 0
4653 #define elf_backend_plt_readonly 0
4654 #define elf_backend_want_plt_sym 0
4655 #define elf_backend_got_header_size 8
4656 #define elf_backend_want_dynrelro 1
4657 #define elf_backend_rela_normal 1
4658 #define elf_backend_dtrel_excludes_plt 1
4660 #define TARGET_BIG_SYM hppa_elf32_vec
4661 #define TARGET_BIG_NAME "elf32-hppa"
4662 #define ELF_ARCH bfd_arch_hppa
4663 #define ELF_TARGET_ID HPPA32_ELF_DATA
4664 #define ELF_MACHINE_CODE EM_PARISC
4665 #define ELF_MAXPAGESIZE 0x1000
4666 #define ELF_OSABI ELFOSABI_HPUX
4667 #define elf32_bed elf32_hppa_hpux_bed
4669 #include "elf32-target.h"
4671 #undef TARGET_BIG_SYM
4672 #define TARGET_BIG_SYM hppa_elf32_linux_vec
4673 #undef TARGET_BIG_NAME
4674 #define TARGET_BIG_NAME "elf32-hppa-linux"
4676 #define ELF_OSABI ELFOSABI_GNU
4678 #define elf32_bed elf32_hppa_linux_bed
4680 #include "elf32-target.h"
4682 #undef TARGET_BIG_SYM
4683 #define TARGET_BIG_SYM hppa_elf32_nbsd_vec
4684 #undef TARGET_BIG_NAME
4685 #define TARGET_BIG_NAME "elf32-hppa-netbsd"
4687 #define ELF_OSABI ELFOSABI_NETBSD
4689 #define elf32_bed elf32_hppa_netbsd_bed
4691 #include "elf32-target.h"