1 /* BFD back-end for HP PA-RISC ELF files.
2 Copyright (C) 1990-2017 Free Software Foundation, Inc.
5 Center for Software Science
6 Department of Computer Science
8 Largely rewritten by Alan Modra <alan@linuxcare.com.au>
9 Naming cleanup by Carlos O'Donell <carlos@systemhalted.org>
10 TLS support written by Randolph Chung <tausq@debian.org>
12 This file is part of BFD, the Binary File Descriptor library.
14 This program is free software; you can redistribute it and/or modify
15 it under the terms of the GNU General Public License as published by
16 the Free Software Foundation; either version 3 of the License, or
17 (at your option) any later version.
19 This program is distributed in the hope that it will be useful,
20 but WITHOUT ANY WARRANTY; without even the implied warranty of
21 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
22 GNU General Public License for more details.
24 You should have received a copy of the GNU General Public License
25 along with this program; if not, write to the Free Software
26 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
27 MA 02110-1301, USA. */
35 #include "elf32-hppa.h"
37 #include "elf32-hppa.h"
40 /* In order to gain some understanding of code in this file without
41 knowing all the intricate details of the linker, note the
44 Functions named elf32_hppa_* are called by external routines, other
45 functions are only called locally. elf32_hppa_* functions appear
46 in this file more or less in the order in which they are called
47 from external routines. eg. elf32_hppa_check_relocs is called
48 early in the link process, elf32_hppa_finish_dynamic_sections is
49 one of the last functions. */
51 /* We use two hash tables to hold information for linking PA ELF objects.
53 The first is the elf32_hppa_link_hash_table which is derived
54 from the standard ELF linker hash table. We use this as a place to
55 attach other hash tables and static information.
57 The second is the stub hash table which is derived from the
58 base BFD hash table. The stub hash table holds the information
59 necessary to build the linker stubs during a link.
61 There are a number of different stubs generated by the linker.
69 : addil LR'X - ($PIC_pcrel$0 - 4),%r1
70 : be,n RR'X - ($PIC_pcrel$0 - 8)(%sr4,%r1)
72 Import stub to call shared library routine from normal object file
73 (single sub-space version)
74 : addil LR'lt_ptr+ltoff,%dp ; get procedure entry point
75 : ldw RR'lt_ptr+ltoff(%r1),%r21
77 : ldw RR'lt_ptr+ltoff+4(%r1),%r19 ; get new dlt value.
79 Import stub to call shared library routine from shared library
80 (single sub-space version)
81 : addil LR'ltoff,%r19 ; get procedure entry point
82 : ldw RR'ltoff(%r1),%r21
84 : ldw RR'ltoff+4(%r1),%r19 ; get new dlt value.
86 Import stub to call shared library routine from normal object file
87 (multiple sub-space support)
88 : addil LR'lt_ptr+ltoff,%dp ; get procedure entry point
89 : ldw RR'lt_ptr+ltoff(%r1),%r21
90 : ldw RR'lt_ptr+ltoff+4(%r1),%r19 ; get new dlt value.
93 : be 0(%sr0,%r21) ; branch to target
94 : stw %rp,-24(%sp) ; save rp
96 Import stub to call shared library routine from shared library
97 (multiple sub-space support)
98 : addil LR'ltoff,%r19 ; get procedure entry point
99 : ldw RR'ltoff(%r1),%r21
100 : ldw RR'ltoff+4(%r1),%r19 ; get new dlt value.
103 : be 0(%sr0,%r21) ; branch to target
104 : stw %rp,-24(%sp) ; save rp
106 Export stub to return from shared lib routine (multiple sub-space support)
107 One of these is created for each exported procedure in a shared
108 library (and stored in the shared lib). Shared lib routines are
109 called via the first instruction in the export stub so that we can
110 do an inter-space return. Not required for single sub-space.
111 : bl,n X,%rp ; trap the return
113 : ldw -24(%sp),%rp ; restore the original rp
116 : be,n 0(%sr0,%rp) ; inter-space return. */
119 /* Variable names follow a coding style.
120 Please follow this (Apps Hungarian) style:
122 Structure/Variable Prefix
123 elf_link_hash_table "etab"
124 elf_link_hash_entry "eh"
126 elf32_hppa_link_hash_table "htab"
127 elf32_hppa_link_hash_entry "hh"
129 bfd_hash_table "btab"
132 bfd_hash_table containing stubs "bstab"
133 elf32_hppa_stub_hash_entry "hsh"
135 elf32_hppa_dyn_reloc_entry "hdh"
137 Always remember to use GNU Coding Style. */
139 #define PLT_ENTRY_SIZE 8
140 #define GOT_ENTRY_SIZE 4
141 #define ELF_DYNAMIC_INTERPRETER "/lib/ld.so.1"
143 static const bfd_byte plt_stub[] =
145 0x0e, 0x80, 0x10, 0x96, /* 1: ldw 0(%r20),%r22 */
146 0xea, 0xc0, 0xc0, 0x00, /* bv %r0(%r22) */
147 0x0e, 0x88, 0x10, 0x95, /* ldw 4(%r20),%r21 */
148 #define PLT_STUB_ENTRY (3*4)
149 0xea, 0x9f, 0x1f, 0xdd, /* b,l 1b,%r20 */
150 0xd6, 0x80, 0x1c, 0x1e, /* depi 0,31,2,%r20 */
151 0x00, 0xc0, 0xff, 0xee, /* 9: .word fixup_func */
152 0xde, 0xad, 0xbe, 0xef /* .word fixup_ltp */
155 /* Section name for stubs is the associated section name plus this
157 #define STUB_SUFFIX ".stub"
159 /* We don't need to copy certain PC- or GP-relative dynamic relocs
160 into a shared object's dynamic section. All the relocs of the
161 limited class we are interested in, are absolute. */
162 #ifndef RELATIVE_DYNRELOCS
163 #define RELATIVE_DYNRELOCS 0
164 #define IS_ABSOLUTE_RELOC(r_type) 1
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+%#Lx): cannot reach %s, recompile with -ffunction-sections"),
840 hsh->target_section->owner,
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_regular = 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 /* Support for core dump NOTE sections. */
1572 elf32_hppa_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
1577 switch (note->descsz)
1582 case 396: /* Linux/hppa */
1584 elf_tdata (abfd)->core->signal = bfd_get_16 (abfd, note->descdata + 12);
1587 elf_tdata (abfd)->core->lwpid = bfd_get_32 (abfd, note->descdata + 24);
1596 /* Make a ".reg/999" section. */
1597 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
1598 size, note->descpos + offset);
1602 elf32_hppa_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
1604 switch (note->descsz)
1609 case 124: /* Linux/hppa elf_prpsinfo. */
1610 elf_tdata (abfd)->core->program
1611 = _bfd_elfcore_strndup (abfd, note->descdata + 28, 16);
1612 elf_tdata (abfd)->core->command
1613 = _bfd_elfcore_strndup (abfd, note->descdata + 44, 80);
1616 /* Note that for some reason, a spurious space is tacked
1617 onto the end of the args in some (at least one anyway)
1618 implementations, so strip it off if it exists. */
1620 char *command = elf_tdata (abfd)->core->command;
1621 int n = strlen (command);
1623 if (0 < n && command[n - 1] == ' ')
1624 command[n - 1] = '\0';
1630 /* Our own version of hide_symbol, so that we can keep plt entries for
1634 elf32_hppa_hide_symbol (struct bfd_link_info *info,
1635 struct elf_link_hash_entry *eh,
1636 bfd_boolean force_local)
1640 eh->forced_local = 1;
1641 if (eh->dynindx != -1)
1644 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
1648 /* PR 16082: Remove version information from hidden symbol. */
1649 eh->verinfo.verdef = NULL;
1650 eh->verinfo.vertree = NULL;
1653 /* STT_GNU_IFUNC symbol must go through PLT. */
1654 if (! hppa_elf_hash_entry (eh)->plabel
1655 && eh->type != STT_GNU_IFUNC)
1658 eh->plt = elf_hash_table (info)->init_plt_offset;
1662 /* Adjust a symbol defined by a dynamic object and referenced by a
1663 regular object. The current definition is in some section of the
1664 dynamic object, but we're not including those sections. We have to
1665 change the definition to something the rest of the link can
1669 elf32_hppa_adjust_dynamic_symbol (struct bfd_link_info *info,
1670 struct elf_link_hash_entry *eh)
1672 struct elf32_hppa_link_hash_table *htab;
1673 asection *sec, *srel;
1675 /* If this is a function, put it in the procedure linkage table. We
1676 will fill in the contents of the procedure linkage table later. */
1677 if (eh->type == STT_FUNC
1680 /* If the symbol is used by a plabel, we must allocate a PLT slot.
1681 The refcounts are not reliable when it has been hidden since
1682 hide_symbol can be called before the plabel flag is set. */
1683 if (hppa_elf_hash_entry (eh)->plabel
1684 && eh->plt.refcount <= 0)
1685 eh->plt.refcount = 1;
1687 if (eh->plt.refcount <= 0
1689 && eh->root.type != bfd_link_hash_defweak
1690 && ! hppa_elf_hash_entry (eh)->plabel
1691 && (!bfd_link_pic (info) || SYMBOLIC_BIND (info, eh))))
1693 /* The .plt entry is not needed when:
1694 a) Garbage collection has removed all references to the
1696 b) We know for certain the symbol is defined in this
1697 object, and it's not a weak definition, nor is the symbol
1698 used by a plabel relocation. Either this object is the
1699 application or we are doing a shared symbolic link. */
1701 eh->plt.offset = (bfd_vma) -1;
1708 eh->plt.offset = (bfd_vma) -1;
1710 /* If this is a weak symbol, and there is a real definition, the
1711 processor independent code will have arranged for us to see the
1712 real definition first, and we can just use the same value. */
1713 if (eh->u.weakdef != NULL)
1715 if (eh->u.weakdef->root.type != bfd_link_hash_defined
1716 && eh->u.weakdef->root.type != bfd_link_hash_defweak)
1718 eh->root.u.def.section = eh->u.weakdef->root.u.def.section;
1719 eh->root.u.def.value = eh->u.weakdef->root.u.def.value;
1720 if (ELIMINATE_COPY_RELOCS)
1721 eh->non_got_ref = eh->u.weakdef->non_got_ref;
1725 /* This is a reference to a symbol defined by a dynamic object which
1726 is not a function. */
1728 /* If we are creating a shared library, we must presume that the
1729 only references to the symbol are via the global offset table.
1730 For such cases we need not do anything here; the relocations will
1731 be handled correctly by relocate_section. */
1732 if (bfd_link_pic (info))
1735 /* If there are no references to this symbol that do not use the
1736 GOT, we don't need to generate a copy reloc. */
1737 if (!eh->non_got_ref)
1740 if (ELIMINATE_COPY_RELOCS)
1742 struct elf32_hppa_link_hash_entry *hh;
1743 struct elf32_hppa_dyn_reloc_entry *hdh_p;
1745 hh = hppa_elf_hash_entry (eh);
1746 for (hdh_p = hh->dyn_relocs; hdh_p != NULL; hdh_p = hdh_p->hdh_next)
1748 sec = hdh_p->sec->output_section;
1749 if (sec != NULL && (sec->flags & SEC_READONLY) != 0)
1753 /* If we didn't find any dynamic relocs in read-only sections, then
1754 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
1757 eh->non_got_ref = 0;
1762 /* We must allocate the symbol in our .dynbss section, which will
1763 become part of the .bss section of the executable. There will be
1764 an entry for this symbol in the .dynsym section. The dynamic
1765 object will contain position independent code, so all references
1766 from the dynamic object to this symbol will go through the global
1767 offset table. The dynamic linker will use the .dynsym entry to
1768 determine the address it must put in the global offset table, so
1769 both the dynamic object and the regular object will refer to the
1770 same memory location for the variable. */
1772 htab = hppa_link_hash_table (info);
1776 /* We must generate a COPY reloc to tell the dynamic linker to
1777 copy the initial value out of the dynamic object and into the
1778 runtime process image. */
1779 if ((eh->root.u.def.section->flags & SEC_READONLY) != 0)
1781 sec = htab->etab.sdynrelro;
1782 srel = htab->etab.sreldynrelro;
1786 sec = htab->etab.sdynbss;
1787 srel = htab->etab.srelbss;
1789 if ((eh->root.u.def.section->flags & SEC_ALLOC) != 0 && eh->size != 0)
1791 srel->size += sizeof (Elf32_External_Rela);
1795 return _bfd_elf_adjust_dynamic_copy (info, eh, sec);
1798 /* If EH is undefined, make it dynamic if that makes sense. */
1801 ensure_undef_dynamic (struct bfd_link_info *info,
1802 struct elf_link_hash_entry *eh)
1804 struct elf_link_hash_table *htab = elf_hash_table (info);
1806 if (htab->dynamic_sections_created
1807 && (eh->root.type == bfd_link_hash_undefweak
1808 || eh->root.type == bfd_link_hash_undefined)
1809 && eh->dynindx == -1
1810 && !eh->forced_local
1811 && eh->type != STT_PARISC_MILLI
1812 && !UNDEFWEAK_NO_DYNAMIC_RELOC (info, eh)
1813 && ELF_ST_VISIBILITY (eh->other) == STV_DEFAULT)
1814 return bfd_elf_link_record_dynamic_symbol (info, eh);
1818 /* Allocate space in the .plt for entries that won't have relocations.
1819 ie. plabel entries. */
1822 allocate_plt_static (struct elf_link_hash_entry *eh, void *inf)
1824 struct bfd_link_info *info;
1825 struct elf32_hppa_link_hash_table *htab;
1826 struct elf32_hppa_link_hash_entry *hh;
1829 if (eh->root.type == bfd_link_hash_indirect)
1832 info = (struct bfd_link_info *) inf;
1833 hh = hppa_elf_hash_entry (eh);
1834 htab = hppa_link_hash_table (info);
1838 if (htab->etab.dynamic_sections_created
1839 && eh->plt.refcount > 0)
1841 if (!ensure_undef_dynamic (info, eh))
1844 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, bfd_link_pic (info), eh))
1846 /* Allocate these later. From this point on, h->plabel
1847 means that the plt entry is only used by a plabel.
1848 We'll be using a normal plt entry for this symbol, so
1849 clear the plabel indicator. */
1853 else if (hh->plabel)
1855 /* Make an entry in the .plt section for plabel references
1856 that won't have a .plt entry for other reasons. */
1857 sec = htab->etab.splt;
1858 eh->plt.offset = sec->size;
1859 sec->size += PLT_ENTRY_SIZE;
1860 if (bfd_link_pic (info))
1861 htab->etab.srelplt->size += sizeof (Elf32_External_Rela);
1865 /* No .plt entry needed. */
1866 eh->plt.offset = (bfd_vma) -1;
1872 eh->plt.offset = (bfd_vma) -1;
1879 /* Allocate space in .plt, .got and associated reloc sections for
1883 allocate_dynrelocs (struct elf_link_hash_entry *eh, void *inf)
1885 struct bfd_link_info *info;
1886 struct elf32_hppa_link_hash_table *htab;
1888 struct elf32_hppa_link_hash_entry *hh;
1889 struct elf32_hppa_dyn_reloc_entry *hdh_p;
1891 if (eh->root.type == bfd_link_hash_indirect)
1895 htab = hppa_link_hash_table (info);
1899 hh = hppa_elf_hash_entry (eh);
1901 if (htab->etab.dynamic_sections_created
1902 && eh->plt.offset != (bfd_vma) -1
1904 && eh->plt.refcount > 0)
1906 /* Make an entry in the .plt section. */
1907 sec = htab->etab.splt;
1908 eh->plt.offset = sec->size;
1909 sec->size += PLT_ENTRY_SIZE;
1911 /* We also need to make an entry in the .rela.plt section. */
1912 htab->etab.srelplt->size += sizeof (Elf32_External_Rela);
1913 htab->need_plt_stub = 1;
1916 if (eh->got.refcount > 0)
1918 if (!ensure_undef_dynamic (info, eh))
1921 sec = htab->etab.sgot;
1922 eh->got.offset = sec->size;
1923 sec->size += GOT_ENTRY_SIZE;
1924 /* R_PARISC_TLS_GD* needs two GOT entries */
1925 if ((hh->tls_type & (GOT_TLS_GD | GOT_TLS_IE)) == (GOT_TLS_GD | GOT_TLS_IE))
1926 sec->size += GOT_ENTRY_SIZE * 2;
1927 else if ((hh->tls_type & GOT_TLS_GD) == GOT_TLS_GD)
1928 sec->size += GOT_ENTRY_SIZE;
1929 if (htab->etab.dynamic_sections_created
1930 && (bfd_link_pic (info)
1931 || (eh->dynindx != -1
1932 && !eh->forced_local)))
1934 htab->etab.srelgot->size += sizeof (Elf32_External_Rela);
1935 if ((hh->tls_type & (GOT_TLS_GD | GOT_TLS_IE)) == (GOT_TLS_GD | GOT_TLS_IE))
1936 htab->etab.srelgot->size += 2 * sizeof (Elf32_External_Rela);
1937 else if ((hh->tls_type & GOT_TLS_GD) == GOT_TLS_GD)
1938 htab->etab.srelgot->size += sizeof (Elf32_External_Rela);
1942 eh->got.offset = (bfd_vma) -1;
1944 if (hh->dyn_relocs == NULL)
1947 /* If this is a -Bsymbolic shared link, then we need to discard all
1948 space allocated for dynamic pc-relative relocs against symbols
1949 defined in a regular object. For the normal shared case, discard
1950 space for relocs that have become local due to symbol visibility
1952 if (bfd_link_pic (info))
1954 /* Discard relocs on undefined syms with non-default visibility. */
1955 if ((eh->root.type == bfd_link_hash_undefined
1956 || eh->root.type == bfd_link_hash_undefweak)
1957 && (ELF_ST_VISIBILITY (eh->other) != STV_DEFAULT
1958 || UNDEFWEAK_NO_DYNAMIC_RELOC (info, eh)))
1959 hh->dyn_relocs = NULL;
1961 #if RELATIVE_DYNRELOCS
1962 else if (SYMBOL_CALLS_LOCAL (info, eh))
1964 struct elf32_hppa_dyn_reloc_entry **hdh_pp;
1966 for (hdh_pp = &hh->dyn_relocs; (hdh_p = *hdh_pp) != NULL; )
1968 hdh_p->count -= hdh_p->relative_count;
1969 hdh_p->relative_count = 0;
1970 if (hdh_p->count == 0)
1971 *hdh_pp = hdh_p->hdh_next;
1973 hdh_pp = &hdh_p->hdh_next;
1978 if (hh->dyn_relocs != NULL)
1980 if (!ensure_undef_dynamic (info, eh))
1986 /* For the non-shared case, discard space for relocs against
1987 symbols which turn out to need copy relocs or are not
1990 if (!eh->non_got_ref
1991 && ((ELIMINATE_COPY_RELOCS
1993 && !eh->def_regular)
1994 || (htab->etab.dynamic_sections_created
1995 && (eh->root.type == bfd_link_hash_undefweak
1996 || eh->root.type == bfd_link_hash_undefined))))
1998 if (!ensure_undef_dynamic (info, eh))
2001 if (eh->dynindx == -1)
2002 hh->dyn_relocs = NULL;
2005 hh->dyn_relocs = NULL;
2008 /* Finally, allocate space. */
2009 for (hdh_p = hh->dyn_relocs; hdh_p != NULL; hdh_p = hdh_p->hdh_next)
2011 asection *sreloc = elf_section_data (hdh_p->sec)->sreloc;
2012 sreloc->size += hdh_p->count * sizeof (Elf32_External_Rela);
2018 /* This function is called via elf_link_hash_traverse to force
2019 millicode symbols local so they do not end up as globals in the
2020 dynamic symbol table. We ought to be able to do this in
2021 adjust_dynamic_symbol, but our adjust_dynamic_symbol is not called
2022 for all dynamic symbols. Arguably, this is a bug in
2023 elf_adjust_dynamic_symbol. */
2026 clobber_millicode_symbols (struct elf_link_hash_entry *eh,
2027 struct bfd_link_info *info)
2029 if (eh->type == STT_PARISC_MILLI
2030 && !eh->forced_local)
2032 elf32_hppa_hide_symbol (info, eh, TRUE);
2037 /* Find any dynamic relocs that apply to read-only sections. */
2040 readonly_dynrelocs (struct elf_link_hash_entry *eh, void *inf)
2042 struct elf32_hppa_link_hash_entry *hh;
2043 struct elf32_hppa_dyn_reloc_entry *hdh_p;
2045 hh = hppa_elf_hash_entry (eh);
2046 for (hdh_p = hh->dyn_relocs; hdh_p != NULL; hdh_p = hdh_p->hdh_next)
2048 asection *sec = hdh_p->sec->output_section;
2050 if (sec != NULL && (sec->flags & SEC_READONLY) != 0)
2052 struct bfd_link_info *info = inf;
2054 info->flags |= DF_TEXTREL;
2056 /* Not an error, just cut short the traversal. */
2063 /* Set the sizes of the dynamic sections. */
2066 elf32_hppa_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
2067 struct bfd_link_info *info)
2069 struct elf32_hppa_link_hash_table *htab;
2075 htab = hppa_link_hash_table (info);
2079 dynobj = htab->etab.dynobj;
2083 if (htab->etab.dynamic_sections_created)
2085 /* Set the contents of the .interp section to the interpreter. */
2086 if (bfd_link_executable (info) && !info->nointerp)
2088 sec = bfd_get_linker_section (dynobj, ".interp");
2091 sec->size = sizeof ELF_DYNAMIC_INTERPRETER;
2092 sec->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
2095 /* Force millicode symbols local. */
2096 elf_link_hash_traverse (&htab->etab,
2097 clobber_millicode_symbols,
2101 /* Set up .got and .plt offsets for local syms, and space for local
2103 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
2105 bfd_signed_vma *local_got;
2106 bfd_signed_vma *end_local_got;
2107 bfd_signed_vma *local_plt;
2108 bfd_signed_vma *end_local_plt;
2109 bfd_size_type locsymcount;
2110 Elf_Internal_Shdr *symtab_hdr;
2112 char *local_tls_type;
2114 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour)
2117 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
2119 struct elf32_hppa_dyn_reloc_entry *hdh_p;
2121 for (hdh_p = ((struct elf32_hppa_dyn_reloc_entry *)
2122 elf_section_data (sec)->local_dynrel);
2124 hdh_p = hdh_p->hdh_next)
2126 if (!bfd_is_abs_section (hdh_p->sec)
2127 && bfd_is_abs_section (hdh_p->sec->output_section))
2129 /* Input section has been discarded, either because
2130 it is a copy of a linkonce section or due to
2131 linker script /DISCARD/, so we'll be discarding
2134 else if (hdh_p->count != 0)
2136 srel = elf_section_data (hdh_p->sec)->sreloc;
2137 srel->size += hdh_p->count * sizeof (Elf32_External_Rela);
2138 if ((hdh_p->sec->output_section->flags & SEC_READONLY) != 0)
2139 info->flags |= DF_TEXTREL;
2144 local_got = elf_local_got_refcounts (ibfd);
2148 symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
2149 locsymcount = symtab_hdr->sh_info;
2150 end_local_got = local_got + locsymcount;
2151 local_tls_type = hppa_elf_local_got_tls_type (ibfd);
2152 sec = htab->etab.sgot;
2153 srel = htab->etab.srelgot;
2154 for (; local_got < end_local_got; ++local_got)
2158 *local_got = sec->size;
2159 sec->size += GOT_ENTRY_SIZE;
2160 if ((*local_tls_type & (GOT_TLS_GD | GOT_TLS_IE)) == (GOT_TLS_GD | GOT_TLS_IE))
2161 sec->size += 2 * GOT_ENTRY_SIZE;
2162 else if ((*local_tls_type & GOT_TLS_GD) == GOT_TLS_GD)
2163 sec->size += GOT_ENTRY_SIZE;
2164 if (bfd_link_pic (info))
2166 srel->size += sizeof (Elf32_External_Rela);
2167 if ((*local_tls_type & (GOT_TLS_GD | GOT_TLS_IE)) == (GOT_TLS_GD | GOT_TLS_IE))
2168 srel->size += 2 * sizeof (Elf32_External_Rela);
2169 else if ((*local_tls_type & GOT_TLS_GD) == GOT_TLS_GD)
2170 srel->size += sizeof (Elf32_External_Rela);
2174 *local_got = (bfd_vma) -1;
2179 local_plt = end_local_got;
2180 end_local_plt = local_plt + locsymcount;
2181 if (! htab->etab.dynamic_sections_created)
2183 /* Won't be used, but be safe. */
2184 for (; local_plt < end_local_plt; ++local_plt)
2185 *local_plt = (bfd_vma) -1;
2189 sec = htab->etab.splt;
2190 srel = htab->etab.srelplt;
2191 for (; local_plt < end_local_plt; ++local_plt)
2195 *local_plt = sec->size;
2196 sec->size += PLT_ENTRY_SIZE;
2197 if (bfd_link_pic (info))
2198 srel->size += sizeof (Elf32_External_Rela);
2201 *local_plt = (bfd_vma) -1;
2206 if (htab->tls_ldm_got.refcount > 0)
2208 /* Allocate 2 got entries and 1 dynamic reloc for
2209 R_PARISC_TLS_DTPMOD32 relocs. */
2210 htab->tls_ldm_got.offset = htab->etab.sgot->size;
2211 htab->etab.sgot->size += (GOT_ENTRY_SIZE * 2);
2212 htab->etab.srelgot->size += sizeof (Elf32_External_Rela);
2215 htab->tls_ldm_got.offset = -1;
2217 /* Do all the .plt entries without relocs first. The dynamic linker
2218 uses the last .plt reloc to find the end of the .plt (and hence
2219 the start of the .got) for lazy linking. */
2220 elf_link_hash_traverse (&htab->etab, allocate_plt_static, info);
2222 /* Allocate global sym .plt and .got entries, and space for global
2223 sym dynamic relocs. */
2224 elf_link_hash_traverse (&htab->etab, allocate_dynrelocs, info);
2226 /* The check_relocs and adjust_dynamic_symbol entry points have
2227 determined the sizes of the various dynamic sections. Allocate
2230 for (sec = dynobj->sections; sec != NULL; sec = sec->next)
2232 if ((sec->flags & SEC_LINKER_CREATED) == 0)
2235 if (sec == htab->etab.splt)
2237 if (htab->need_plt_stub)
2239 /* Make space for the plt stub at the end of the .plt
2240 section. We want this stub right at the end, up
2241 against the .got section. */
2242 int gotalign = bfd_section_alignment (dynobj, htab->etab.sgot);
2243 int pltalign = bfd_section_alignment (dynobj, sec);
2246 if (gotalign > pltalign)
2247 (void) bfd_set_section_alignment (dynobj, sec, gotalign);
2248 mask = ((bfd_size_type) 1 << gotalign) - 1;
2249 sec->size = (sec->size + sizeof (plt_stub) + mask) & ~mask;
2252 else if (sec == htab->etab.sgot
2253 || sec == htab->etab.sdynbss
2254 || sec == htab->etab.sdynrelro)
2256 else if (CONST_STRNEQ (bfd_get_section_name (dynobj, sec), ".rela"))
2260 /* Remember whether there are any reloc sections other
2262 if (sec != htab->etab.srelplt)
2265 /* We use the reloc_count field as a counter if we need
2266 to copy relocs into the output file. */
2267 sec->reloc_count = 0;
2272 /* It's not one of our sections, so don't allocate space. */
2278 /* If we don't need this section, strip it from the
2279 output file. This is mostly to handle .rela.bss and
2280 .rela.plt. We must create both sections in
2281 create_dynamic_sections, because they must be created
2282 before the linker maps input sections to output
2283 sections. The linker does that before
2284 adjust_dynamic_symbol is called, and it is that
2285 function which decides whether anything needs to go
2286 into these sections. */
2287 sec->flags |= SEC_EXCLUDE;
2291 if ((sec->flags & SEC_HAS_CONTENTS) == 0)
2294 /* Allocate memory for the section contents. Zero it, because
2295 we may not fill in all the reloc sections. */
2296 sec->contents = bfd_zalloc (dynobj, sec->size);
2297 if (sec->contents == NULL)
2301 if (htab->etab.dynamic_sections_created)
2303 /* Like IA-64 and HPPA64, always create a DT_PLTGOT. It
2304 actually has nothing to do with the PLT, it is how we
2305 communicate the LTP value of a load module to the dynamic
2307 #define add_dynamic_entry(TAG, VAL) \
2308 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
2310 if (!add_dynamic_entry (DT_PLTGOT, 0))
2313 /* Add some entries to the .dynamic section. We fill in the
2314 values later, in elf32_hppa_finish_dynamic_sections, but we
2315 must add the entries now so that we get the correct size for
2316 the .dynamic section. The DT_DEBUG entry is filled in by the
2317 dynamic linker and used by the debugger. */
2318 if (bfd_link_executable (info))
2320 if (!add_dynamic_entry (DT_DEBUG, 0))
2324 if (htab->etab.srelplt->size != 0)
2326 if (!add_dynamic_entry (DT_PLTRELSZ, 0)
2327 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
2328 || !add_dynamic_entry (DT_JMPREL, 0))
2334 if (!add_dynamic_entry (DT_RELA, 0)
2335 || !add_dynamic_entry (DT_RELASZ, 0)
2336 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf32_External_Rela)))
2339 /* If any dynamic relocs apply to a read-only section,
2340 then we need a DT_TEXTREL entry. */
2341 if ((info->flags & DF_TEXTREL) == 0)
2342 elf_link_hash_traverse (&htab->etab, readonly_dynrelocs, info);
2344 if ((info->flags & DF_TEXTREL) != 0)
2346 if (!add_dynamic_entry (DT_TEXTREL, 0))
2351 #undef add_dynamic_entry
2356 /* External entry points for sizing and building linker stubs. */
2358 /* Set up various things so that we can make a list of input sections
2359 for each output section included in the link. Returns -1 on error,
2360 0 when no stubs will be needed, and 1 on success. */
2363 elf32_hppa_setup_section_lists (bfd *output_bfd, struct bfd_link_info *info)
2366 unsigned int bfd_count;
2367 unsigned int top_id, top_index;
2369 asection **input_list, **list;
2371 struct elf32_hppa_link_hash_table *htab = hppa_link_hash_table (info);
2376 /* Count the number of input BFDs and find the top input section id. */
2377 for (input_bfd = info->input_bfds, bfd_count = 0, top_id = 0;
2379 input_bfd = input_bfd->link.next)
2382 for (section = input_bfd->sections;
2384 section = section->next)
2386 if (top_id < section->id)
2387 top_id = section->id;
2390 htab->bfd_count = bfd_count;
2392 amt = sizeof (struct map_stub) * (top_id + 1);
2393 htab->stub_group = bfd_zmalloc (amt);
2394 if (htab->stub_group == NULL)
2397 /* We can't use output_bfd->section_count here to find the top output
2398 section index as some sections may have been removed, and
2399 strip_excluded_output_sections doesn't renumber the indices. */
2400 for (section = output_bfd->sections, top_index = 0;
2402 section = section->next)
2404 if (top_index < section->index)
2405 top_index = section->index;
2408 htab->top_index = top_index;
2409 amt = sizeof (asection *) * (top_index + 1);
2410 input_list = bfd_malloc (amt);
2411 htab->input_list = input_list;
2412 if (input_list == NULL)
2415 /* For sections we aren't interested in, mark their entries with a
2416 value we can check later. */
2417 list = input_list + top_index;
2419 *list = bfd_abs_section_ptr;
2420 while (list-- != input_list);
2422 for (section = output_bfd->sections;
2424 section = section->next)
2426 if ((section->flags & SEC_CODE) != 0)
2427 input_list[section->index] = NULL;
2433 /* The linker repeatedly calls this function for each input section,
2434 in the order that input sections are linked into output sections.
2435 Build lists of input sections to determine groupings between which
2436 we may insert linker stubs. */
2439 elf32_hppa_next_input_section (struct bfd_link_info *info, asection *isec)
2441 struct elf32_hppa_link_hash_table *htab = hppa_link_hash_table (info);
2446 if (isec->output_section->index <= htab->top_index)
2448 asection **list = htab->input_list + isec->output_section->index;
2449 if (*list != bfd_abs_section_ptr)
2451 /* Steal the link_sec pointer for our list. */
2452 #define PREV_SEC(sec) (htab->stub_group[(sec)->id].link_sec)
2453 /* This happens to make the list in reverse order,
2454 which is what we want. */
2455 PREV_SEC (isec) = *list;
2461 /* See whether we can group stub sections together. Grouping stub
2462 sections may result in fewer stubs. More importantly, we need to
2463 put all .init* and .fini* stubs at the beginning of the .init or
2464 .fini output sections respectively, because glibc splits the
2465 _init and _fini functions into multiple parts. Putting a stub in
2466 the middle of a function is not a good idea. */
2469 group_sections (struct elf32_hppa_link_hash_table *htab,
2470 bfd_size_type stub_group_size,
2471 bfd_boolean stubs_always_before_branch)
2473 asection **list = htab->input_list + htab->top_index;
2476 asection *tail = *list;
2477 if (tail == bfd_abs_section_ptr)
2479 while (tail != NULL)
2483 bfd_size_type total;
2484 bfd_boolean big_sec;
2488 big_sec = total >= stub_group_size;
2490 while ((prev = PREV_SEC (curr)) != NULL
2491 && ((total += curr->output_offset - prev->output_offset)
2495 /* OK, the size from the start of CURR to the end is less
2496 than 240000 bytes and thus can be handled by one stub
2497 section. (or the tail section is itself larger than
2498 240000 bytes, in which case we may be toast.)
2499 We should really be keeping track of the total size of
2500 stubs added here, as stubs contribute to the final output
2501 section size. That's a little tricky, and this way will
2502 only break if stubs added total more than 22144 bytes, or
2503 2768 long branch stubs. It seems unlikely for more than
2504 2768 different functions to be called, especially from
2505 code only 240000 bytes long. This limit used to be
2506 250000, but c++ code tends to generate lots of little
2507 functions, and sometimes violated the assumption. */
2510 prev = PREV_SEC (tail);
2511 /* Set up this stub group. */
2512 htab->stub_group[tail->id].link_sec = curr;
2514 while (tail != curr && (tail = prev) != NULL);
2516 /* But wait, there's more! Input sections up to 240000
2517 bytes before the stub section can be handled by it too.
2518 Don't do this if we have a really large section after the
2519 stubs, as adding more stubs increases the chance that
2520 branches may not reach into the stub section. */
2521 if (!stubs_always_before_branch && !big_sec)
2525 && ((total += tail->output_offset - prev->output_offset)
2529 prev = PREV_SEC (tail);
2530 htab->stub_group[tail->id].link_sec = curr;
2536 while (list-- != htab->input_list);
2537 free (htab->input_list);
2541 /* Read in all local syms for all input bfds, and create hash entries
2542 for export stubs if we are building a multi-subspace shared lib.
2543 Returns -1 on error, 1 if export stubs created, 0 otherwise. */
2546 get_local_syms (bfd *output_bfd, bfd *input_bfd, struct bfd_link_info *info)
2548 unsigned int bfd_indx;
2549 Elf_Internal_Sym *local_syms, **all_local_syms;
2550 int stub_changed = 0;
2551 struct elf32_hppa_link_hash_table *htab = hppa_link_hash_table (info);
2556 /* We want to read in symbol extension records only once. To do this
2557 we need to read in the local symbols in parallel and save them for
2558 later use; so hold pointers to the local symbols in an array. */
2559 bfd_size_type amt = sizeof (Elf_Internal_Sym *) * htab->bfd_count;
2560 all_local_syms = bfd_zmalloc (amt);
2561 htab->all_local_syms = all_local_syms;
2562 if (all_local_syms == NULL)
2565 /* Walk over all the input BFDs, swapping in local symbols.
2566 If we are creating a shared library, create hash entries for the
2570 input_bfd = input_bfd->link.next, bfd_indx++)
2572 Elf_Internal_Shdr *symtab_hdr;
2574 /* We'll need the symbol table in a second. */
2575 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
2576 if (symtab_hdr->sh_info == 0)
2579 /* We need an array of the local symbols attached to the input bfd. */
2580 local_syms = (Elf_Internal_Sym *) symtab_hdr->contents;
2581 if (local_syms == NULL)
2583 local_syms = bfd_elf_get_elf_syms (input_bfd, symtab_hdr,
2584 symtab_hdr->sh_info, 0,
2586 /* Cache them for elf_link_input_bfd. */
2587 symtab_hdr->contents = (unsigned char *) local_syms;
2589 if (local_syms == NULL)
2592 all_local_syms[bfd_indx] = local_syms;
2594 if (bfd_link_pic (info) && htab->multi_subspace)
2596 struct elf_link_hash_entry **eh_syms;
2597 struct elf_link_hash_entry **eh_symend;
2598 unsigned int symcount;
2600 symcount = (symtab_hdr->sh_size / sizeof (Elf32_External_Sym)
2601 - symtab_hdr->sh_info);
2602 eh_syms = (struct elf_link_hash_entry **) elf_sym_hashes (input_bfd);
2603 eh_symend = (struct elf_link_hash_entry **) (eh_syms + symcount);
2605 /* Look through the global syms for functions; We need to
2606 build export stubs for all globally visible functions. */
2607 for (; eh_syms < eh_symend; eh_syms++)
2609 struct elf32_hppa_link_hash_entry *hh;
2611 hh = hppa_elf_hash_entry (*eh_syms);
2613 while (hh->eh.root.type == bfd_link_hash_indirect
2614 || hh->eh.root.type == bfd_link_hash_warning)
2615 hh = hppa_elf_hash_entry (hh->eh.root.u.i.link);
2617 /* At this point in the link, undefined syms have been
2618 resolved, so we need to check that the symbol was
2619 defined in this BFD. */
2620 if ((hh->eh.root.type == bfd_link_hash_defined
2621 || hh->eh.root.type == bfd_link_hash_defweak)
2622 && hh->eh.type == STT_FUNC
2623 && hh->eh.root.u.def.section->output_section != NULL
2624 && (hh->eh.root.u.def.section->output_section->owner
2626 && hh->eh.root.u.def.section->owner == input_bfd
2627 && hh->eh.def_regular
2628 && !hh->eh.forced_local
2629 && ELF_ST_VISIBILITY (hh->eh.other) == STV_DEFAULT)
2632 const char *stub_name;
2633 struct elf32_hppa_stub_hash_entry *hsh;
2635 sec = hh->eh.root.u.def.section;
2636 stub_name = hh_name (hh);
2637 hsh = hppa_stub_hash_lookup (&htab->bstab,
2642 hsh = hppa_add_stub (stub_name, sec, htab);
2646 hsh->target_value = hh->eh.root.u.def.value;
2647 hsh->target_section = hh->eh.root.u.def.section;
2648 hsh->stub_type = hppa_stub_export;
2654 /* xgettext:c-format */
2655 _bfd_error_handler (_("%B: duplicate export stub %s"),
2656 input_bfd, stub_name);
2663 return stub_changed;
2666 /* Determine and set the size of the stub section for a final link.
2668 The basic idea here is to examine all the relocations looking for
2669 PC-relative calls to a target that is unreachable with a "bl"
2673 elf32_hppa_size_stubs
2674 (bfd *output_bfd, bfd *stub_bfd, struct bfd_link_info *info,
2675 bfd_boolean multi_subspace, bfd_signed_vma group_size,
2676 asection * (*add_stub_section) (const char *, asection *),
2677 void (*layout_sections_again) (void))
2679 bfd_size_type stub_group_size;
2680 bfd_boolean stubs_always_before_branch;
2681 bfd_boolean stub_changed;
2682 struct elf32_hppa_link_hash_table *htab = hppa_link_hash_table (info);
2687 /* Stash our params away. */
2688 htab->stub_bfd = stub_bfd;
2689 htab->multi_subspace = multi_subspace;
2690 htab->add_stub_section = add_stub_section;
2691 htab->layout_sections_again = layout_sections_again;
2692 stubs_always_before_branch = group_size < 0;
2694 stub_group_size = -group_size;
2696 stub_group_size = group_size;
2697 if (stub_group_size == 1)
2699 /* Default values. */
2700 if (stubs_always_before_branch)
2702 stub_group_size = 7680000;
2703 if (htab->has_17bit_branch || htab->multi_subspace)
2704 stub_group_size = 240000;
2705 if (htab->has_12bit_branch)
2706 stub_group_size = 7500;
2710 stub_group_size = 6971392;
2711 if (htab->has_17bit_branch || htab->multi_subspace)
2712 stub_group_size = 217856;
2713 if (htab->has_12bit_branch)
2714 stub_group_size = 6808;
2718 group_sections (htab, stub_group_size, stubs_always_before_branch);
2720 switch (get_local_syms (output_bfd, info->input_bfds, info))
2723 if (htab->all_local_syms)
2724 goto error_ret_free_local;
2728 stub_changed = FALSE;
2732 stub_changed = TRUE;
2739 unsigned int bfd_indx;
2742 for (input_bfd = info->input_bfds, bfd_indx = 0;
2744 input_bfd = input_bfd->link.next, bfd_indx++)
2746 Elf_Internal_Shdr *symtab_hdr;
2748 Elf_Internal_Sym *local_syms;
2750 /* We'll need the symbol table in a second. */
2751 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
2752 if (symtab_hdr->sh_info == 0)
2755 local_syms = htab->all_local_syms[bfd_indx];
2757 /* Walk over each section attached to the input bfd. */
2758 for (section = input_bfd->sections;
2760 section = section->next)
2762 Elf_Internal_Rela *internal_relocs, *irelaend, *irela;
2764 /* If there aren't any relocs, then there's nothing more
2766 if ((section->flags & SEC_RELOC) == 0
2767 || section->reloc_count == 0)
2770 /* If this section is a link-once section that will be
2771 discarded, then don't create any stubs. */
2772 if (section->output_section == NULL
2773 || section->output_section->owner != output_bfd)
2776 /* Get the relocs. */
2778 = _bfd_elf_link_read_relocs (input_bfd, section, NULL, NULL,
2780 if (internal_relocs == NULL)
2781 goto error_ret_free_local;
2783 /* Now examine each relocation. */
2784 irela = internal_relocs;
2785 irelaend = irela + section->reloc_count;
2786 for (; irela < irelaend; irela++)
2788 unsigned int r_type, r_indx;
2789 enum elf32_hppa_stub_type stub_type;
2790 struct elf32_hppa_stub_hash_entry *hsh;
2793 bfd_vma destination;
2794 struct elf32_hppa_link_hash_entry *hh;
2796 const asection *id_sec;
2798 r_type = ELF32_R_TYPE (irela->r_info);
2799 r_indx = ELF32_R_SYM (irela->r_info);
2801 if (r_type >= (unsigned int) R_PARISC_UNIMPLEMENTED)
2803 bfd_set_error (bfd_error_bad_value);
2804 error_ret_free_internal:
2805 if (elf_section_data (section)->relocs == NULL)
2806 free (internal_relocs);
2807 goto error_ret_free_local;
2810 /* Only look for stubs on call instructions. */
2811 if (r_type != (unsigned int) R_PARISC_PCREL12F
2812 && r_type != (unsigned int) R_PARISC_PCREL17F
2813 && r_type != (unsigned int) R_PARISC_PCREL22F)
2816 /* Now determine the call target, its name, value,
2822 if (r_indx < symtab_hdr->sh_info)
2824 /* It's a local symbol. */
2825 Elf_Internal_Sym *sym;
2826 Elf_Internal_Shdr *hdr;
2829 sym = local_syms + r_indx;
2830 if (ELF_ST_TYPE (sym->st_info) != STT_SECTION)
2831 sym_value = sym->st_value;
2832 shndx = sym->st_shndx;
2833 if (shndx < elf_numsections (input_bfd))
2835 hdr = elf_elfsections (input_bfd)[shndx];
2836 sym_sec = hdr->bfd_section;
2837 destination = (sym_value + irela->r_addend
2838 + sym_sec->output_offset
2839 + sym_sec->output_section->vma);
2844 /* It's an external symbol. */
2847 e_indx = r_indx - symtab_hdr->sh_info;
2848 hh = hppa_elf_hash_entry (elf_sym_hashes (input_bfd)[e_indx]);
2850 while (hh->eh.root.type == bfd_link_hash_indirect
2851 || hh->eh.root.type == bfd_link_hash_warning)
2852 hh = hppa_elf_hash_entry (hh->eh.root.u.i.link);
2854 if (hh->eh.root.type == bfd_link_hash_defined
2855 || hh->eh.root.type == bfd_link_hash_defweak)
2857 sym_sec = hh->eh.root.u.def.section;
2858 sym_value = hh->eh.root.u.def.value;
2859 if (sym_sec->output_section != NULL)
2860 destination = (sym_value + irela->r_addend
2861 + sym_sec->output_offset
2862 + sym_sec->output_section->vma);
2864 else if (hh->eh.root.type == bfd_link_hash_undefweak)
2866 if (! bfd_link_pic (info))
2869 else if (hh->eh.root.type == bfd_link_hash_undefined)
2871 if (! (info->unresolved_syms_in_objects == RM_IGNORE
2872 && (ELF_ST_VISIBILITY (hh->eh.other)
2874 && hh->eh.type != STT_PARISC_MILLI))
2879 bfd_set_error (bfd_error_bad_value);
2880 goto error_ret_free_internal;
2884 /* Determine what (if any) linker stub is needed. */
2885 stub_type = hppa_type_of_stub (section, irela, hh,
2887 if (stub_type == hppa_stub_none)
2890 /* Support for grouping stub sections. */
2891 id_sec = htab->stub_group[section->id].link_sec;
2893 /* Get the name of this stub. */
2894 stub_name = hppa_stub_name (id_sec, sym_sec, hh, irela);
2896 goto error_ret_free_internal;
2898 hsh = hppa_stub_hash_lookup (&htab->bstab,
2903 /* The proper stub has already been created. */
2908 hsh = hppa_add_stub (stub_name, section, htab);
2912 goto error_ret_free_internal;
2915 hsh->target_value = sym_value;
2916 hsh->target_section = sym_sec;
2917 hsh->stub_type = stub_type;
2918 if (bfd_link_pic (info))
2920 if (stub_type == hppa_stub_import)
2921 hsh->stub_type = hppa_stub_import_shared;
2922 else if (stub_type == hppa_stub_long_branch)
2923 hsh->stub_type = hppa_stub_long_branch_shared;
2926 stub_changed = TRUE;
2929 /* We're done with the internal relocs, free them. */
2930 if (elf_section_data (section)->relocs == NULL)
2931 free (internal_relocs);
2938 /* OK, we've added some stubs. Find out the new size of the
2940 for (stub_sec = htab->stub_bfd->sections;
2942 stub_sec = stub_sec->next)
2943 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
2946 bfd_hash_traverse (&htab->bstab, hppa_size_one_stub, htab);
2948 /* Ask the linker to do its stuff. */
2949 (*htab->layout_sections_again) ();
2950 stub_changed = FALSE;
2953 free (htab->all_local_syms);
2956 error_ret_free_local:
2957 free (htab->all_local_syms);
2961 /* For a final link, this function is called after we have sized the
2962 stubs to provide a value for __gp. */
2965 elf32_hppa_set_gp (bfd *abfd, struct bfd_link_info *info)
2967 struct bfd_link_hash_entry *h;
2968 asection *sec = NULL;
2971 h = bfd_link_hash_lookup (info->hash, "$global$", FALSE, FALSE, FALSE);
2974 && (h->type == bfd_link_hash_defined
2975 || h->type == bfd_link_hash_defweak))
2977 gp_val = h->u.def.value;
2978 sec = h->u.def.section;
2982 asection *splt = bfd_get_section_by_name (abfd, ".plt");
2983 asection *sgot = bfd_get_section_by_name (abfd, ".got");
2985 /* Choose to point our LTP at, in this order, one of .plt, .got,
2986 or .data, if these sections exist. In the case of choosing
2987 .plt try to make the LTP ideal for addressing anywhere in the
2988 .plt or .got with a 14 bit signed offset. Typically, the end
2989 of the .plt is the start of the .got, so choose .plt + 0x2000
2990 if either the .plt or .got is larger than 0x2000. If both
2991 the .plt and .got are smaller than 0x2000, choose the end of
2992 the .plt section. */
2993 sec = strcmp (bfd_get_target (abfd), "elf32-hppa-netbsd") == 0
2998 if (gp_val > 0x2000 || (sgot && sgot->size > 0x2000))
3008 if (strcmp (bfd_get_target (abfd), "elf32-hppa-netbsd") != 0)
3010 /* We know we don't have a .plt. If .got is large,
3012 if (sec->size > 0x2000)
3018 /* No .plt or .got. Who cares what the LTP is? */
3019 sec = bfd_get_section_by_name (abfd, ".data");
3025 h->type = bfd_link_hash_defined;
3026 h->u.def.value = gp_val;
3028 h->u.def.section = sec;
3030 h->u.def.section = bfd_abs_section_ptr;
3034 if (bfd_get_flavour (abfd) == bfd_target_elf_flavour)
3036 if (sec != NULL && sec->output_section != NULL)
3037 gp_val += sec->output_section->vma + sec->output_offset;
3039 elf_gp (abfd) = gp_val;
3044 /* Build all the stubs associated with the current output file. The
3045 stubs are kept in a hash table attached to the main linker hash
3046 table. We also set up the .plt entries for statically linked PIC
3047 functions here. This function is called via hppaelf_finish in the
3051 elf32_hppa_build_stubs (struct bfd_link_info *info)
3054 struct bfd_hash_table *table;
3055 struct elf32_hppa_link_hash_table *htab;
3057 htab = hppa_link_hash_table (info);
3061 for (stub_sec = htab->stub_bfd->sections;
3063 stub_sec = stub_sec->next)
3064 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0
3065 && stub_sec->size != 0)
3067 /* Allocate memory to hold the linker stubs. */
3068 stub_sec->contents = bfd_zalloc (htab->stub_bfd, stub_sec->size);
3069 if (stub_sec->contents == NULL)
3074 /* Build the stubs as directed by the stub hash table. */
3075 table = &htab->bstab;
3076 bfd_hash_traverse (table, hppa_build_one_stub, info);
3081 /* Return the base vma address which should be subtracted from the real
3082 address when resolving a dtpoff relocation.
3083 This is PT_TLS segment p_vaddr. */
3086 dtpoff_base (struct bfd_link_info *info)
3088 /* If tls_sec is NULL, we should have signalled an error already. */
3089 if (elf_hash_table (info)->tls_sec == NULL)
3091 return elf_hash_table (info)->tls_sec->vma;
3094 /* Return the relocation value for R_PARISC_TLS_TPOFF*.. */
3097 tpoff (struct bfd_link_info *info, bfd_vma address)
3099 struct elf_link_hash_table *htab = elf_hash_table (info);
3101 /* If tls_sec is NULL, we should have signalled an error already. */
3102 if (htab->tls_sec == NULL)
3104 /* hppa TLS ABI is variant I and static TLS block start just after
3105 tcbhead structure which has 2 pointer fields. */
3106 return (address - htab->tls_sec->vma
3107 + align_power ((bfd_vma) 8, htab->tls_sec->alignment_power));
3110 /* Perform a final link. */
3113 elf32_hppa_final_link (bfd *abfd, struct bfd_link_info *info)
3117 /* Invoke the regular ELF linker to do all the work. */
3118 if (!bfd_elf_final_link (abfd, info))
3121 /* If we're producing a final executable, sort the contents of the
3123 if (bfd_link_relocatable (info))
3126 /* Do not attempt to sort non-regular files. This is here
3127 especially for configure scripts and kernel builds which run
3128 tests with "ld [...] -o /dev/null". */
3129 if (stat (abfd->filename, &buf) != 0
3130 || !S_ISREG(buf.st_mode))
3133 return elf_hppa_sort_unwind (abfd);
3136 /* Record the lowest address for the data and text segments. */
3139 hppa_record_segment_addr (bfd *abfd, asection *section, void *data)
3141 struct elf32_hppa_link_hash_table *htab;
3143 htab = (struct elf32_hppa_link_hash_table*) data;
3147 if ((section->flags & (SEC_ALLOC | SEC_LOAD)) == (SEC_ALLOC | SEC_LOAD))
3150 Elf_Internal_Phdr *p;
3152 p = _bfd_elf_find_segment_containing_section (abfd, section->output_section);
3153 BFD_ASSERT (p != NULL);
3156 if ((section->flags & SEC_READONLY) != 0)
3158 if (value < htab->text_segment_base)
3159 htab->text_segment_base = value;
3163 if (value < htab->data_segment_base)
3164 htab->data_segment_base = value;
3169 /* Perform a relocation as part of a final link. */
3171 static bfd_reloc_status_type
3172 final_link_relocate (asection *input_section,
3174 const Elf_Internal_Rela *rela,
3176 struct elf32_hppa_link_hash_table *htab,
3178 struct elf32_hppa_link_hash_entry *hh,
3179 struct bfd_link_info *info)
3182 unsigned int r_type = ELF32_R_TYPE (rela->r_info);
3183 unsigned int orig_r_type = r_type;
3184 reloc_howto_type *howto = elf_hppa_howto_table + r_type;
3185 int r_format = howto->bitsize;
3186 enum hppa_reloc_field_selector_type_alt r_field;
3187 bfd *input_bfd = input_section->owner;
3188 bfd_vma offset = rela->r_offset;
3189 bfd_vma max_branch_offset = 0;
3190 bfd_byte *hit_data = contents + offset;
3191 bfd_signed_vma addend = rela->r_addend;
3193 struct elf32_hppa_stub_hash_entry *hsh = NULL;
3196 if (r_type == R_PARISC_NONE)
3197 return bfd_reloc_ok;
3199 insn = bfd_get_32 (input_bfd, hit_data);
3201 /* Find out where we are and where we're going. */
3202 location = (offset +
3203 input_section->output_offset +
3204 input_section->output_section->vma);
3206 /* If we are not building a shared library, convert DLTIND relocs to
3208 if (!bfd_link_pic (info))
3212 case R_PARISC_DLTIND21L:
3213 case R_PARISC_TLS_GD21L:
3214 case R_PARISC_TLS_LDM21L:
3215 case R_PARISC_TLS_IE21L:
3216 r_type = R_PARISC_DPREL21L;
3219 case R_PARISC_DLTIND14R:
3220 case R_PARISC_TLS_GD14R:
3221 case R_PARISC_TLS_LDM14R:
3222 case R_PARISC_TLS_IE14R:
3223 r_type = R_PARISC_DPREL14R;
3226 case R_PARISC_DLTIND14F:
3227 r_type = R_PARISC_DPREL14F;
3234 case R_PARISC_PCREL12F:
3235 case R_PARISC_PCREL17F:
3236 case R_PARISC_PCREL22F:
3237 /* If this call should go via the plt, find the import stub in
3240 || sym_sec->output_section == NULL
3242 && hh->eh.plt.offset != (bfd_vma) -1
3243 && hh->eh.dynindx != -1
3245 && (bfd_link_pic (info)
3246 || !hh->eh.def_regular
3247 || hh->eh.root.type == bfd_link_hash_defweak)))
3249 hsh = hppa_get_stub_entry (input_section, sym_sec,
3253 value = (hsh->stub_offset
3254 + hsh->stub_sec->output_offset
3255 + hsh->stub_sec->output_section->vma);
3258 else if (sym_sec == NULL && hh != NULL
3259 && hh->eh.root.type == bfd_link_hash_undefweak)
3261 /* It's OK if undefined weak. Calls to undefined weak
3262 symbols behave as if the "called" function
3263 immediately returns. We can thus call to a weak
3264 function without first checking whether the function
3270 return bfd_reloc_undefined;
3274 case R_PARISC_PCREL21L:
3275 case R_PARISC_PCREL17C:
3276 case R_PARISC_PCREL17R:
3277 case R_PARISC_PCREL14R:
3278 case R_PARISC_PCREL14F:
3279 case R_PARISC_PCREL32:
3280 /* Make it a pc relative offset. */
3285 case R_PARISC_DPREL21L:
3286 case R_PARISC_DPREL14R:
3287 case R_PARISC_DPREL14F:
3288 /* Convert instructions that use the linkage table pointer (r19) to
3289 instructions that use the global data pointer (dp). This is the
3290 most efficient way of using PIC code in an incomplete executable,
3291 but the user must follow the standard runtime conventions for
3292 accessing data for this to work. */
3293 if (orig_r_type != r_type)
3295 if (r_type == R_PARISC_DPREL21L)
3297 /* GCC sometimes uses a register other than r19 for the
3298 operation, so we must convert any addil instruction
3299 that uses this relocation. */
3300 if ((insn & 0xfc000000) == ((int) OP_ADDIL << 26))
3303 /* We must have a ldil instruction. It's too hard to find
3304 and convert the associated add instruction, so issue an
3307 /* xgettext:c-format */
3308 (_("%B(%A+%#Lx): %s fixup for insn %#x is not supported in a non-shared link"),
3315 else if (r_type == R_PARISC_DPREL14F)
3317 /* This must be a format 1 load/store. Change the base
3319 insn = (insn & 0xfc1ffff) | (27 << 21);
3323 /* For all the DP relative relocations, we need to examine the symbol's
3324 section. If it has no section or if it's a code section, then
3325 "data pointer relative" makes no sense. In that case we don't
3326 adjust the "value", and for 21 bit addil instructions, we change the
3327 source addend register from %dp to %r0. This situation commonly
3328 arises for undefined weak symbols and when a variable's "constness"
3329 is declared differently from the way the variable is defined. For
3330 instance: "extern int foo" with foo defined as "const int foo". */
3331 if (sym_sec == NULL || (sym_sec->flags & SEC_CODE) != 0)
3333 if ((insn & ((0x3f << 26) | (0x1f << 21)))
3334 == (((int) OP_ADDIL << 26) | (27 << 21)))
3336 insn &= ~ (0x1f << 21);
3338 /* Now try to make things easy for the dynamic linker. */
3344 case R_PARISC_DLTIND21L:
3345 case R_PARISC_DLTIND14R:
3346 case R_PARISC_DLTIND14F:
3347 case R_PARISC_TLS_GD21L:
3348 case R_PARISC_TLS_LDM21L:
3349 case R_PARISC_TLS_IE21L:
3350 case R_PARISC_TLS_GD14R:
3351 case R_PARISC_TLS_LDM14R:
3352 case R_PARISC_TLS_IE14R:
3353 value -= elf_gp (input_section->output_section->owner);
3356 case R_PARISC_SEGREL32:
3357 if ((sym_sec->flags & SEC_CODE) != 0)
3358 value -= htab->text_segment_base;
3360 value -= htab->data_segment_base;
3369 case R_PARISC_DIR32:
3370 case R_PARISC_DIR14F:
3371 case R_PARISC_DIR17F:
3372 case R_PARISC_PCREL17C:
3373 case R_PARISC_PCREL14F:
3374 case R_PARISC_PCREL32:
3375 case R_PARISC_DPREL14F:
3376 case R_PARISC_PLABEL32:
3377 case R_PARISC_DLTIND14F:
3378 case R_PARISC_SEGBASE:
3379 case R_PARISC_SEGREL32:
3380 case R_PARISC_TLS_DTPMOD32:
3381 case R_PARISC_TLS_DTPOFF32:
3382 case R_PARISC_TLS_TPREL32:
3386 case R_PARISC_DLTIND21L:
3387 case R_PARISC_PCREL21L:
3388 case R_PARISC_PLABEL21L:
3392 case R_PARISC_DIR21L:
3393 case R_PARISC_DPREL21L:
3394 case R_PARISC_TLS_GD21L:
3395 case R_PARISC_TLS_LDM21L:
3396 case R_PARISC_TLS_LDO21L:
3397 case R_PARISC_TLS_IE21L:
3398 case R_PARISC_TLS_LE21L:
3402 case R_PARISC_PCREL17R:
3403 case R_PARISC_PCREL14R:
3404 case R_PARISC_PLABEL14R:
3405 case R_PARISC_DLTIND14R:
3409 case R_PARISC_DIR17R:
3410 case R_PARISC_DIR14R:
3411 case R_PARISC_DPREL14R:
3412 case R_PARISC_TLS_GD14R:
3413 case R_PARISC_TLS_LDM14R:
3414 case R_PARISC_TLS_LDO14R:
3415 case R_PARISC_TLS_IE14R:
3416 case R_PARISC_TLS_LE14R:
3420 case R_PARISC_PCREL12F:
3421 case R_PARISC_PCREL17F:
3422 case R_PARISC_PCREL22F:
3425 if (r_type == (unsigned int) R_PARISC_PCREL17F)
3427 max_branch_offset = (1 << (17-1)) << 2;
3429 else if (r_type == (unsigned int) R_PARISC_PCREL12F)
3431 max_branch_offset = (1 << (12-1)) << 2;
3435 max_branch_offset = (1 << (22-1)) << 2;
3438 /* sym_sec is NULL on undefined weak syms or when shared on
3439 undefined syms. We've already checked for a stub for the
3440 shared undefined case. */
3441 if (sym_sec == NULL)
3444 /* If the branch is out of reach, then redirect the
3445 call to the local stub for this function. */
3446 if (value + addend + max_branch_offset >= 2*max_branch_offset)
3448 hsh = hppa_get_stub_entry (input_section, sym_sec,
3451 return bfd_reloc_undefined;
3453 /* Munge up the value and addend so that we call the stub
3454 rather than the procedure directly. */
3455 value = (hsh->stub_offset
3456 + hsh->stub_sec->output_offset
3457 + hsh->stub_sec->output_section->vma
3463 /* Something we don't know how to handle. */
3465 return bfd_reloc_notsupported;
3468 /* Make sure we can reach the stub. */
3469 if (max_branch_offset != 0
3470 && value + addend + max_branch_offset >= 2*max_branch_offset)
3473 /* xgettext:c-format */
3474 (_("%B(%A+%#Lx): cannot reach %s, recompile with -ffunction-sections"),
3478 hsh->bh_root.string);
3479 bfd_set_error (bfd_error_bad_value);
3480 return bfd_reloc_notsupported;
3483 val = hppa_field_adjust (value, addend, r_field);
3487 case R_PARISC_PCREL12F:
3488 case R_PARISC_PCREL17C:
3489 case R_PARISC_PCREL17F:
3490 case R_PARISC_PCREL17R:
3491 case R_PARISC_PCREL22F:
3492 case R_PARISC_DIR17F:
3493 case R_PARISC_DIR17R:
3494 /* This is a branch. Divide the offset by four.
3495 Note that we need to decide whether it's a branch or
3496 otherwise by inspecting the reloc. Inspecting insn won't
3497 work as insn might be from a .word directive. */
3505 insn = hppa_rebuild_insn (insn, val, r_format);
3507 /* Update the instruction word. */
3508 bfd_put_32 (input_bfd, (bfd_vma) insn, hit_data);
3509 return bfd_reloc_ok;
3512 /* Relocate an HPPA ELF section. */
3515 elf32_hppa_relocate_section (bfd *output_bfd,
3516 struct bfd_link_info *info,
3518 asection *input_section,
3520 Elf_Internal_Rela *relocs,
3521 Elf_Internal_Sym *local_syms,
3522 asection **local_sections)
3524 bfd_vma *local_got_offsets;
3525 struct elf32_hppa_link_hash_table *htab;
3526 Elf_Internal_Shdr *symtab_hdr;
3527 Elf_Internal_Rela *rela;
3528 Elf_Internal_Rela *relend;
3530 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
3532 htab = hppa_link_hash_table (info);
3536 local_got_offsets = elf_local_got_offsets (input_bfd);
3539 relend = relocs + input_section->reloc_count;
3540 for (; rela < relend; rela++)
3542 unsigned int r_type;
3543 reloc_howto_type *howto;
3544 unsigned int r_symndx;
3545 struct elf32_hppa_link_hash_entry *hh;
3546 Elf_Internal_Sym *sym;
3549 bfd_reloc_status_type rstatus;
3550 const char *sym_name;
3552 bfd_boolean warned_undef;
3553 bfd_boolean resolved_to_zero;
3555 r_type = ELF32_R_TYPE (rela->r_info);
3556 if (r_type >= (unsigned int) R_PARISC_UNIMPLEMENTED)
3558 bfd_set_error (bfd_error_bad_value);
3561 if (r_type == (unsigned int) R_PARISC_GNU_VTENTRY
3562 || r_type == (unsigned int) R_PARISC_GNU_VTINHERIT)
3565 r_symndx = ELF32_R_SYM (rela->r_info);
3569 warned_undef = FALSE;
3570 if (r_symndx < symtab_hdr->sh_info)
3572 /* This is a local symbol, h defaults to NULL. */
3573 sym = local_syms + r_symndx;
3574 sym_sec = local_sections[r_symndx];
3575 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sym_sec, rela);
3579 struct elf_link_hash_entry *eh;
3580 bfd_boolean unresolved_reloc, ignored;
3581 struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (input_bfd);
3583 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rela,
3584 r_symndx, symtab_hdr, sym_hashes,
3585 eh, sym_sec, relocation,
3586 unresolved_reloc, warned_undef,
3589 if (!bfd_link_relocatable (info)
3591 && eh->root.type != bfd_link_hash_defined
3592 && eh->root.type != bfd_link_hash_defweak
3593 && eh->root.type != bfd_link_hash_undefweak)
3595 if (info->unresolved_syms_in_objects == RM_IGNORE
3596 && ELF_ST_VISIBILITY (eh->other) == STV_DEFAULT
3597 && eh->type == STT_PARISC_MILLI)
3599 (*info->callbacks->undefined_symbol)
3600 (info, eh_name (eh), input_bfd,
3601 input_section, rela->r_offset, FALSE);
3602 warned_undef = TRUE;
3605 hh = hppa_elf_hash_entry (eh);
3608 if (sym_sec != NULL && discarded_section (sym_sec))
3609 RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section,
3611 elf_hppa_howto_table + r_type, 0,
3614 if (bfd_link_relocatable (info))
3617 resolved_to_zero = (hh != NULL
3618 && UNDEFWEAK_NO_DYNAMIC_RELOC (info, &hh->eh));
3620 /* Do any required modifications to the relocation value, and
3621 determine what types of dynamic info we need to output, if
3626 case R_PARISC_DLTIND14F:
3627 case R_PARISC_DLTIND14R:
3628 case R_PARISC_DLTIND21L:
3631 bfd_boolean do_got = 0;
3633 /* Relocation is to the entry for this symbol in the
3634 global offset table. */
3639 off = hh->eh.got.offset;
3640 dyn = htab->etab.dynamic_sections_created;
3641 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn,
3642 bfd_link_pic (info),
3645 /* If we aren't going to call finish_dynamic_symbol,
3646 then we need to handle initialisation of the .got
3647 entry and create needed relocs here. Since the
3648 offset must always be a multiple of 4, we use the
3649 least significant bit to record whether we have
3650 initialised it already. */
3655 hh->eh.got.offset |= 1;
3662 /* Local symbol case. */
3663 if (local_got_offsets == NULL)
3666 off = local_got_offsets[r_symndx];
3668 /* The offset must always be a multiple of 4. We use
3669 the least significant bit to record whether we have
3670 already generated the necessary reloc. */
3675 local_got_offsets[r_symndx] |= 1;
3682 if (bfd_link_pic (info))
3684 /* Output a dynamic relocation for this GOT entry.
3685 In this case it is relative to the base of the
3686 object because the symbol index is zero. */
3687 Elf_Internal_Rela outrel;
3689 asection *sec = htab->etab.srelgot;
3691 outrel.r_offset = (off
3692 + htab->etab.sgot->output_offset
3693 + htab->etab.sgot->output_section->vma);
3694 outrel.r_info = ELF32_R_INFO (0, R_PARISC_DIR32);
3695 outrel.r_addend = relocation;
3696 loc = sec->contents;
3697 loc += sec->reloc_count++ * sizeof (Elf32_External_Rela);
3698 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
3701 bfd_put_32 (output_bfd, relocation,
3702 htab->etab.sgot->contents + off);
3705 if (off >= (bfd_vma) -2)
3708 /* Add the base of the GOT to the relocation value. */
3710 + htab->etab.sgot->output_offset
3711 + htab->etab.sgot->output_section->vma);
3715 case R_PARISC_SEGREL32:
3716 /* If this is the first SEGREL relocation, then initialize
3717 the segment base values. */
3718 if (htab->text_segment_base == (bfd_vma) -1)
3719 bfd_map_over_sections (output_bfd, hppa_record_segment_addr, htab);
3722 case R_PARISC_PLABEL14R:
3723 case R_PARISC_PLABEL21L:
3724 case R_PARISC_PLABEL32:
3725 if (htab->etab.dynamic_sections_created)
3728 bfd_boolean do_plt = 0;
3729 /* If we have a global symbol with a PLT slot, then
3730 redirect this relocation to it. */
3733 off = hh->eh.plt.offset;
3734 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (1,
3735 bfd_link_pic (info),
3738 /* In a non-shared link, adjust_dynamic_symbols
3739 isn't called for symbols forced local. We
3740 need to write out the plt entry here. */
3745 hh->eh.plt.offset |= 1;
3752 bfd_vma *local_plt_offsets;
3754 if (local_got_offsets == NULL)
3757 local_plt_offsets = local_got_offsets + symtab_hdr->sh_info;
3758 off = local_plt_offsets[r_symndx];
3760 /* As for the local .got entry case, we use the last
3761 bit to record whether we've already initialised
3762 this local .plt entry. */
3767 local_plt_offsets[r_symndx] |= 1;
3774 if (bfd_link_pic (info))
3776 /* Output a dynamic IPLT relocation for this
3778 Elf_Internal_Rela outrel;
3780 asection *s = htab->etab.srelplt;
3782 outrel.r_offset = (off
3783 + htab->etab.splt->output_offset
3784 + htab->etab.splt->output_section->vma);
3785 outrel.r_info = ELF32_R_INFO (0, R_PARISC_IPLT);
3786 outrel.r_addend = relocation;
3788 loc += s->reloc_count++ * sizeof (Elf32_External_Rela);
3789 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
3793 bfd_put_32 (output_bfd,
3795 htab->etab.splt->contents + off);
3796 bfd_put_32 (output_bfd,
3797 elf_gp (htab->etab.splt->output_section->owner),
3798 htab->etab.splt->contents + off + 4);
3802 if (off >= (bfd_vma) -2)
3805 /* PLABELs contain function pointers. Relocation is to
3806 the entry for the function in the .plt. The magic +2
3807 offset signals to $$dyncall that the function pointer
3808 is in the .plt and thus has a gp pointer too.
3809 Exception: Undefined PLABELs should have a value of
3812 || (hh->eh.root.type != bfd_link_hash_undefweak
3813 && hh->eh.root.type != bfd_link_hash_undefined))
3816 + htab->etab.splt->output_offset
3817 + htab->etab.splt->output_section->vma
3824 case R_PARISC_DIR17F:
3825 case R_PARISC_DIR17R:
3826 case R_PARISC_DIR14F:
3827 case R_PARISC_DIR14R:
3828 case R_PARISC_DIR21L:
3829 case R_PARISC_DPREL14F:
3830 case R_PARISC_DPREL14R:
3831 case R_PARISC_DPREL21L:
3832 case R_PARISC_DIR32:
3833 if ((input_section->flags & SEC_ALLOC) == 0)
3836 /* The reloc types handled here and this conditional
3837 expression must match the code in ..check_relocs and
3838 allocate_dynrelocs. ie. We need exactly the same condition
3839 as in ..check_relocs, with some extra conditions (dynindx
3840 test in this case) to cater for relocs removed by
3841 allocate_dynrelocs. If you squint, the non-shared test
3842 here does indeed match the one in ..check_relocs, the
3843 difference being that here we test DEF_DYNAMIC as well as
3844 !DEF_REGULAR. All common syms end up with !DEF_REGULAR,
3845 which is why we can't use just that test here.
3846 Conversely, DEF_DYNAMIC can't be used in check_relocs as
3847 there all files have not been loaded. */
3848 if ((bfd_link_pic (info)
3850 || (ELF_ST_VISIBILITY (hh->eh.other) == STV_DEFAULT
3851 && !resolved_to_zero)
3852 || hh->eh.root.type != bfd_link_hash_undefweak)
3853 && (IS_ABSOLUTE_RELOC (r_type)
3854 || !SYMBOL_CALLS_LOCAL (info, &hh->eh)))
3855 || (!bfd_link_pic (info)
3857 && hh->eh.dynindx != -1
3858 && !hh->eh.non_got_ref
3859 && ((ELIMINATE_COPY_RELOCS
3860 && hh->eh.def_dynamic
3861 && !hh->eh.def_regular)
3862 || hh->eh.root.type == bfd_link_hash_undefweak
3863 || hh->eh.root.type == bfd_link_hash_undefined)))
3865 Elf_Internal_Rela outrel;
3870 /* When generating a shared object, these relocations
3871 are copied into the output file to be resolved at run
3874 outrel.r_addend = rela->r_addend;
3876 _bfd_elf_section_offset (output_bfd, info, input_section,
3878 skip = (outrel.r_offset == (bfd_vma) -1
3879 || outrel.r_offset == (bfd_vma) -2);
3880 outrel.r_offset += (input_section->output_offset
3881 + input_section->output_section->vma);
3885 memset (&outrel, 0, sizeof (outrel));
3888 && hh->eh.dynindx != -1
3890 || !IS_ABSOLUTE_RELOC (r_type)
3891 || !bfd_link_pic (info)
3892 || !SYMBOLIC_BIND (info, &hh->eh)
3893 || !hh->eh.def_regular))
3895 outrel.r_info = ELF32_R_INFO (hh->eh.dynindx, r_type);
3897 else /* It's a local symbol, or one marked to become local. */
3901 /* Add the absolute offset of the symbol. */
3902 outrel.r_addend += relocation;
3904 /* Global plabels need to be processed by the
3905 dynamic linker so that functions have at most one
3906 fptr. For this reason, we need to differentiate
3907 between global and local plabels, which we do by
3908 providing the function symbol for a global plabel
3909 reloc, and no symbol for local plabels. */
3912 && sym_sec->output_section != NULL
3913 && ! bfd_is_abs_section (sym_sec))
3917 osec = sym_sec->output_section;
3918 indx = elf_section_data (osec)->dynindx;
3921 osec = htab->etab.text_index_section;
3922 indx = elf_section_data (osec)->dynindx;
3924 BFD_ASSERT (indx != 0);
3926 /* We are turning this relocation into one
3927 against a section symbol, so subtract out the
3928 output section's address but not the offset
3929 of the input section in the output section. */
3930 outrel.r_addend -= osec->vma;
3933 outrel.r_info = ELF32_R_INFO (indx, r_type);
3935 sreloc = elf_section_data (input_section)->sreloc;
3939 loc = sreloc->contents;
3940 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela);
3941 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
3945 case R_PARISC_TLS_LDM21L:
3946 case R_PARISC_TLS_LDM14R:
3950 off = htab->tls_ldm_got.offset;
3955 Elf_Internal_Rela outrel;
3958 outrel.r_offset = (off
3959 + htab->etab.sgot->output_section->vma
3960 + htab->etab.sgot->output_offset);
3961 outrel.r_addend = 0;
3962 outrel.r_info = ELF32_R_INFO (0, R_PARISC_TLS_DTPMOD32);
3963 loc = htab->etab.srelgot->contents;
3964 loc += htab->etab.srelgot->reloc_count++ * sizeof (Elf32_External_Rela);
3966 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
3967 htab->tls_ldm_got.offset |= 1;
3970 /* Add the base of the GOT to the relocation value. */
3972 + htab->etab.sgot->output_offset
3973 + htab->etab.sgot->output_section->vma);
3978 case R_PARISC_TLS_LDO21L:
3979 case R_PARISC_TLS_LDO14R:
3980 relocation -= dtpoff_base (info);
3983 case R_PARISC_TLS_GD21L:
3984 case R_PARISC_TLS_GD14R:
3985 case R_PARISC_TLS_IE21L:
3986 case R_PARISC_TLS_IE14R:
3996 dyn = htab->etab.dynamic_sections_created;
3998 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn,
3999 bfd_link_pic (info),
4001 && (!bfd_link_pic (info)
4002 || !SYMBOL_REFERENCES_LOCAL (info, &hh->eh)))
4004 indx = hh->eh.dynindx;
4006 off = hh->eh.got.offset;
4007 tls_type = hh->tls_type;
4011 off = local_got_offsets[r_symndx];
4012 tls_type = hppa_elf_local_got_tls_type (input_bfd)[r_symndx];
4015 if (tls_type == GOT_UNKNOWN)
4022 bfd_boolean need_relocs = FALSE;
4023 Elf_Internal_Rela outrel;
4024 bfd_byte *loc = NULL;
4027 /* The GOT entries have not been initialized yet. Do it
4028 now, and emit any relocations. If both an IE GOT and a
4029 GD GOT are necessary, we emit the GD first. */
4031 if ((bfd_link_pic (info) || indx != 0)
4033 || ELF_ST_VISIBILITY (hh->eh.other) == STV_DEFAULT
4034 || hh->eh.root.type != bfd_link_hash_undefweak))
4037 loc = htab->etab.srelgot->contents;
4038 /* FIXME (CAO): Should this be reloc_count++ ? */
4039 loc += htab->etab.srelgot->reloc_count * sizeof (Elf32_External_Rela);
4042 if (tls_type & GOT_TLS_GD)
4046 outrel.r_offset = (cur_off
4047 + htab->etab.sgot->output_section->vma
4048 + htab->etab.sgot->output_offset);
4049 outrel.r_info = ELF32_R_INFO (indx,R_PARISC_TLS_DTPMOD32);
4050 outrel.r_addend = 0;
4051 bfd_put_32 (output_bfd, 0, htab->etab.sgot->contents + cur_off);
4052 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
4053 htab->etab.srelgot->reloc_count++;
4054 loc += sizeof (Elf32_External_Rela);
4057 bfd_put_32 (output_bfd, relocation - dtpoff_base (info),
4058 htab->etab.sgot->contents + cur_off + 4);
4061 bfd_put_32 (output_bfd, 0,
4062 htab->etab.sgot->contents + cur_off + 4);
4063 outrel.r_info = ELF32_R_INFO (indx, R_PARISC_TLS_DTPOFF32);
4064 outrel.r_offset += 4;
4065 bfd_elf32_swap_reloca_out (output_bfd, &outrel,loc);
4066 htab->etab.srelgot->reloc_count++;
4067 loc += sizeof (Elf32_External_Rela);
4072 /* If we are not emitting relocations for a
4073 general dynamic reference, then we must be in a
4074 static link or an executable link with the
4075 symbol binding locally. Mark it as belonging
4076 to module 1, the executable. */
4077 bfd_put_32 (output_bfd, 1,
4078 htab->etab.sgot->contents + cur_off);
4079 bfd_put_32 (output_bfd, relocation - dtpoff_base (info),
4080 htab->etab.sgot->contents + cur_off + 4);
4087 if (tls_type & GOT_TLS_IE)
4091 outrel.r_offset = (cur_off
4092 + htab->etab.sgot->output_section->vma
4093 + htab->etab.sgot->output_offset);
4094 outrel.r_info = ELF32_R_INFO (indx, R_PARISC_TLS_TPREL32);
4097 outrel.r_addend = relocation - dtpoff_base (info);
4099 outrel.r_addend = 0;
4101 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
4102 htab->etab.srelgot->reloc_count++;
4103 loc += sizeof (Elf32_External_Rela);
4106 bfd_put_32 (output_bfd, tpoff (info, relocation),
4107 htab->etab.sgot->contents + cur_off);
4113 hh->eh.got.offset |= 1;
4115 local_got_offsets[r_symndx] |= 1;
4118 if ((tls_type & GOT_TLS_GD)
4119 && r_type != R_PARISC_TLS_GD21L
4120 && r_type != R_PARISC_TLS_GD14R)
4121 off += 2 * GOT_ENTRY_SIZE;
4123 /* Add the base of the GOT to the relocation value. */
4125 + htab->etab.sgot->output_offset
4126 + htab->etab.sgot->output_section->vma);
4131 case R_PARISC_TLS_LE21L:
4132 case R_PARISC_TLS_LE14R:
4134 relocation = tpoff (info, relocation);
4143 rstatus = final_link_relocate (input_section, contents, rela, relocation,
4144 htab, sym_sec, hh, info);
4146 if (rstatus == bfd_reloc_ok)
4150 sym_name = hh_name (hh);
4153 sym_name = bfd_elf_string_from_elf_section (input_bfd,
4154 symtab_hdr->sh_link,
4156 if (sym_name == NULL)
4158 if (*sym_name == '\0')
4159 sym_name = bfd_section_name (input_bfd, sym_sec);
4162 howto = elf_hppa_howto_table + r_type;
4164 if (rstatus == bfd_reloc_undefined || rstatus == bfd_reloc_notsupported)
4166 if (rstatus == bfd_reloc_notsupported || !warned_undef)
4169 /* xgettext:c-format */
4170 (_("%B(%A+%#Lx): cannot handle %s for %s"),
4176 bfd_set_error (bfd_error_bad_value);
4181 (*info->callbacks->reloc_overflow)
4182 (info, (hh ? &hh->eh.root : NULL), sym_name, howto->name,
4183 (bfd_vma) 0, input_bfd, input_section, rela->r_offset);
4189 /* Finish up dynamic symbol handling. We set the contents of various
4190 dynamic sections here. */
4193 elf32_hppa_finish_dynamic_symbol (bfd *output_bfd,
4194 struct bfd_link_info *info,
4195 struct elf_link_hash_entry *eh,
4196 Elf_Internal_Sym *sym)
4198 struct elf32_hppa_link_hash_table *htab;
4199 Elf_Internal_Rela rela;
4202 htab = hppa_link_hash_table (info);
4206 if (eh->plt.offset != (bfd_vma) -1)
4210 if (eh->plt.offset & 1)
4213 /* This symbol has an entry in the procedure linkage table. Set
4216 The format of a plt entry is
4221 if (eh->root.type == bfd_link_hash_defined
4222 || eh->root.type == bfd_link_hash_defweak)
4224 value = eh->root.u.def.value;
4225 if (eh->root.u.def.section->output_section != NULL)
4226 value += (eh->root.u.def.section->output_offset
4227 + eh->root.u.def.section->output_section->vma);
4230 /* Create a dynamic IPLT relocation for this entry. */
4231 rela.r_offset = (eh->plt.offset
4232 + htab->etab.splt->output_offset
4233 + htab->etab.splt->output_section->vma);
4234 if (eh->dynindx != -1)
4236 rela.r_info = ELF32_R_INFO (eh->dynindx, R_PARISC_IPLT);
4241 /* This symbol has been marked to become local, and is
4242 used by a plabel so must be kept in the .plt. */
4243 rela.r_info = ELF32_R_INFO (0, R_PARISC_IPLT);
4244 rela.r_addend = value;
4247 loc = htab->etab.srelplt->contents;
4248 loc += htab->etab.srelplt->reloc_count++ * sizeof (Elf32_External_Rela);
4249 bfd_elf32_swap_reloca_out (htab->etab.splt->output_section->owner, &rela, loc);
4251 if (!eh->def_regular)
4253 /* Mark the symbol as undefined, rather than as defined in
4254 the .plt section. Leave the value alone. */
4255 sym->st_shndx = SHN_UNDEF;
4259 if (eh->got.offset != (bfd_vma) -1
4260 && (hppa_elf_hash_entry (eh)->tls_type & GOT_TLS_GD) == 0
4261 && (hppa_elf_hash_entry (eh)->tls_type & GOT_TLS_IE) == 0)
4263 /* This symbol has an entry in the global offset table. Set it
4266 rela.r_offset = ((eh->got.offset &~ (bfd_vma) 1)
4267 + htab->etab.sgot->output_offset
4268 + htab->etab.sgot->output_section->vma);
4270 /* If this is a -Bsymbolic link and the symbol is defined
4271 locally or was forced to be local because of a version file,
4272 we just want to emit a RELATIVE reloc. The entry in the
4273 global offset table will already have been initialized in the
4274 relocate_section function. */
4275 if (bfd_link_pic (info)
4276 && (SYMBOLIC_BIND (info, eh) || eh->dynindx == -1)
4279 rela.r_info = ELF32_R_INFO (0, R_PARISC_DIR32);
4280 rela.r_addend = (eh->root.u.def.value
4281 + eh->root.u.def.section->output_offset
4282 + eh->root.u.def.section->output_section->vma);
4286 if ((eh->got.offset & 1) != 0)
4289 bfd_put_32 (output_bfd, 0, htab->etab.sgot->contents + (eh->got.offset & ~1));
4290 rela.r_info = ELF32_R_INFO (eh->dynindx, R_PARISC_DIR32);
4294 loc = htab->etab.srelgot->contents;
4295 loc += htab->etab.srelgot->reloc_count++ * sizeof (Elf32_External_Rela);
4296 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
4303 /* This symbol needs a copy reloc. Set it up. */
4305 if (! (eh->dynindx != -1
4306 && (eh->root.type == bfd_link_hash_defined
4307 || eh->root.type == bfd_link_hash_defweak)))
4310 rela.r_offset = (eh->root.u.def.value
4311 + eh->root.u.def.section->output_offset
4312 + eh->root.u.def.section->output_section->vma);
4314 rela.r_info = ELF32_R_INFO (eh->dynindx, R_PARISC_COPY);
4315 if (eh->root.u.def.section == htab->etab.sdynrelro)
4316 sec = htab->etab.sreldynrelro;
4318 sec = htab->etab.srelbss;
4319 loc = sec->contents + sec->reloc_count++ * sizeof (Elf32_External_Rela);
4320 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
4323 /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. */
4324 if (eh == htab->etab.hdynamic || eh == htab->etab.hgot)
4326 sym->st_shndx = SHN_ABS;
4332 /* Used to decide how to sort relocs in an optimal manner for the
4333 dynamic linker, before writing them out. */
4335 static enum elf_reloc_type_class
4336 elf32_hppa_reloc_type_class (const struct bfd_link_info *info ATTRIBUTE_UNUSED,
4337 const asection *rel_sec ATTRIBUTE_UNUSED,
4338 const Elf_Internal_Rela *rela)
4340 /* Handle TLS relocs first; we don't want them to be marked
4341 relative by the "if (ELF32_R_SYM (rela->r_info) == STN_UNDEF)"
4343 switch ((int) ELF32_R_TYPE (rela->r_info))
4345 case R_PARISC_TLS_DTPMOD32:
4346 case R_PARISC_TLS_DTPOFF32:
4347 case R_PARISC_TLS_TPREL32:
4348 return reloc_class_normal;
4351 if (ELF32_R_SYM (rela->r_info) == STN_UNDEF)
4352 return reloc_class_relative;
4354 switch ((int) ELF32_R_TYPE (rela->r_info))
4357 return reloc_class_plt;
4359 return reloc_class_copy;
4361 return reloc_class_normal;
4365 /* Finish up the dynamic sections. */
4368 elf32_hppa_finish_dynamic_sections (bfd *output_bfd,
4369 struct bfd_link_info *info)
4372 struct elf32_hppa_link_hash_table *htab;
4376 htab = hppa_link_hash_table (info);
4380 dynobj = htab->etab.dynobj;
4382 sgot = htab->etab.sgot;
4383 /* A broken linker script might have discarded the dynamic sections.
4384 Catch this here so that we do not seg-fault later on. */
4385 if (sgot != NULL && bfd_is_abs_section (sgot->output_section))
4388 sdyn = bfd_get_linker_section (dynobj, ".dynamic");
4390 if (htab->etab.dynamic_sections_created)
4392 Elf32_External_Dyn *dyncon, *dynconend;
4397 dyncon = (Elf32_External_Dyn *) sdyn->contents;
4398 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
4399 for (; dyncon < dynconend; dyncon++)
4401 Elf_Internal_Dyn dyn;
4404 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
4412 /* Use PLTGOT to set the GOT register. */
4413 dyn.d_un.d_ptr = elf_gp (output_bfd);
4417 s = htab->etab.srelplt;
4418 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
4422 s = htab->etab.srelplt;
4423 dyn.d_un.d_val = s->size;
4427 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
4431 if (sgot != NULL && sgot->size != 0)
4433 /* Fill in the first entry in the global offset table.
4434 We use it to point to our dynamic section, if we have one. */
4435 bfd_put_32 (output_bfd,
4436 sdyn ? sdyn->output_section->vma + sdyn->output_offset : 0,
4439 /* The second entry is reserved for use by the dynamic linker. */
4440 memset (sgot->contents + GOT_ENTRY_SIZE, 0, GOT_ENTRY_SIZE);
4442 /* Set .got entry size. */
4443 elf_section_data (sgot->output_section)
4444 ->this_hdr.sh_entsize = GOT_ENTRY_SIZE;
4447 if (htab->etab.splt != NULL && htab->etab.splt->size != 0)
4449 /* Set plt entry size to 0 instead of PLT_ENTRY_SIZE, since we add the
4450 plt stubs and as such the section does not hold a table of fixed-size
4452 elf_section_data (htab->etab.splt->output_section)->this_hdr.sh_entsize = 0;
4454 if (htab->need_plt_stub)
4456 /* Set up the .plt stub. */
4457 memcpy (htab->etab.splt->contents
4458 + htab->etab.splt->size - sizeof (plt_stub),
4459 plt_stub, sizeof (plt_stub));
4461 if ((htab->etab.splt->output_offset
4462 + htab->etab.splt->output_section->vma
4463 + htab->etab.splt->size)
4464 != (sgot->output_offset
4465 + sgot->output_section->vma))
4468 (_(".got section not immediately after .plt section"));
4477 /* Called when writing out an object file to decide the type of a
4480 elf32_hppa_elf_get_symbol_type (Elf_Internal_Sym *elf_sym, int type)
4482 if (ELF_ST_TYPE (elf_sym->st_info) == STT_PARISC_MILLI)
4483 return STT_PARISC_MILLI;
4488 /* Misc BFD support code. */
4489 #define bfd_elf32_bfd_is_local_label_name elf_hppa_is_local_label_name
4490 #define bfd_elf32_bfd_reloc_type_lookup elf_hppa_reloc_type_lookup
4491 #define bfd_elf32_bfd_reloc_name_lookup elf_hppa_reloc_name_lookup
4492 #define elf_info_to_howto elf_hppa_info_to_howto
4493 #define elf_info_to_howto_rel elf_hppa_info_to_howto_rel
4495 /* Stuff for the BFD linker. */
4496 #define bfd_elf32_bfd_final_link elf32_hppa_final_link
4497 #define bfd_elf32_bfd_link_hash_table_create elf32_hppa_link_hash_table_create
4498 #define elf_backend_adjust_dynamic_symbol elf32_hppa_adjust_dynamic_symbol
4499 #define elf_backend_copy_indirect_symbol elf32_hppa_copy_indirect_symbol
4500 #define elf_backend_check_relocs elf32_hppa_check_relocs
4501 #define elf_backend_create_dynamic_sections elf32_hppa_create_dynamic_sections
4502 #define elf_backend_fake_sections elf_hppa_fake_sections
4503 #define elf_backend_relocate_section elf32_hppa_relocate_section
4504 #define elf_backend_hide_symbol elf32_hppa_hide_symbol
4505 #define elf_backend_finish_dynamic_symbol elf32_hppa_finish_dynamic_symbol
4506 #define elf_backend_finish_dynamic_sections elf32_hppa_finish_dynamic_sections
4507 #define elf_backend_size_dynamic_sections elf32_hppa_size_dynamic_sections
4508 #define elf_backend_init_index_section _bfd_elf_init_1_index_section
4509 #define elf_backend_gc_mark_hook elf32_hppa_gc_mark_hook
4510 #define elf_backend_grok_prstatus elf32_hppa_grok_prstatus
4511 #define elf_backend_grok_psinfo elf32_hppa_grok_psinfo
4512 #define elf_backend_object_p elf32_hppa_object_p
4513 #define elf_backend_final_write_processing elf_hppa_final_write_processing
4514 #define elf_backend_get_symbol_type elf32_hppa_elf_get_symbol_type
4515 #define elf_backend_reloc_type_class elf32_hppa_reloc_type_class
4516 #define elf_backend_action_discarded elf_hppa_action_discarded
4518 #define elf_backend_can_gc_sections 1
4519 #define elf_backend_can_refcount 1
4520 #define elf_backend_plt_alignment 2
4521 #define elf_backend_want_got_plt 0
4522 #define elf_backend_plt_readonly 0
4523 #define elf_backend_want_plt_sym 0
4524 #define elf_backend_got_header_size 8
4525 #define elf_backend_want_dynrelro 1
4526 #define elf_backend_rela_normal 1
4527 #define elf_backend_dtrel_excludes_plt 1
4528 #define elf_backend_no_page_alias 1
4530 #define TARGET_BIG_SYM hppa_elf32_vec
4531 #define TARGET_BIG_NAME "elf32-hppa"
4532 #define ELF_ARCH bfd_arch_hppa
4533 #define ELF_TARGET_ID HPPA32_ELF_DATA
4534 #define ELF_MACHINE_CODE EM_PARISC
4535 #define ELF_MAXPAGESIZE 0x1000
4536 #define ELF_OSABI ELFOSABI_HPUX
4537 #define elf32_bed elf32_hppa_hpux_bed
4539 #include "elf32-target.h"
4541 #undef TARGET_BIG_SYM
4542 #define TARGET_BIG_SYM hppa_elf32_linux_vec
4543 #undef TARGET_BIG_NAME
4544 #define TARGET_BIG_NAME "elf32-hppa-linux"
4546 #define ELF_OSABI ELFOSABI_GNU
4548 #define elf32_bed elf32_hppa_linux_bed
4550 #include "elf32-target.h"
4552 #undef TARGET_BIG_SYM
4553 #define TARGET_BIG_SYM hppa_elf32_nbsd_vec
4554 #undef TARGET_BIG_NAME
4555 #define TARGET_BIG_NAME "elf32-hppa-netbsd"
4557 #define ELF_OSABI ELFOSABI_NETBSD
4559 #define elf32_bed elf32_hppa_netbsd_bed
4561 #include "elf32-target.h"