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 /* Update the got and plt entry reference counts for the section being
1573 elf32_hppa_gc_sweep_hook (bfd *abfd,
1574 struct bfd_link_info *info ATTRIBUTE_UNUSED,
1576 const Elf_Internal_Rela *relocs)
1578 Elf_Internal_Shdr *symtab_hdr;
1579 struct elf_link_hash_entry **eh_syms;
1580 bfd_signed_vma *local_got_refcounts;
1581 bfd_signed_vma *local_plt_refcounts;
1582 const Elf_Internal_Rela *rela, *relend;
1583 struct elf32_hppa_link_hash_table *htab;
1585 if (bfd_link_relocatable (info))
1588 htab = hppa_link_hash_table (info);
1592 elf_section_data (sec)->local_dynrel = NULL;
1594 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
1595 eh_syms = elf_sym_hashes (abfd);
1596 local_got_refcounts = elf_local_got_refcounts (abfd);
1597 local_plt_refcounts = local_got_refcounts;
1598 if (local_plt_refcounts != NULL)
1599 local_plt_refcounts += symtab_hdr->sh_info;
1601 relend = relocs + sec->reloc_count;
1602 for (rela = relocs; rela < relend; rela++)
1604 unsigned long r_symndx;
1605 unsigned int r_type;
1606 struct elf_link_hash_entry *eh = NULL;
1608 r_symndx = ELF32_R_SYM (rela->r_info);
1609 if (r_symndx >= symtab_hdr->sh_info)
1611 struct elf32_hppa_link_hash_entry *hh;
1612 struct elf32_hppa_dyn_reloc_entry **hdh_pp;
1613 struct elf32_hppa_dyn_reloc_entry *hdh_p;
1615 eh = eh_syms[r_symndx - symtab_hdr->sh_info];
1616 while (eh->root.type == bfd_link_hash_indirect
1617 || eh->root.type == bfd_link_hash_warning)
1618 eh = (struct elf_link_hash_entry *) eh->root.u.i.link;
1619 hh = hppa_elf_hash_entry (eh);
1621 for (hdh_pp = &hh->dyn_relocs; (hdh_p = *hdh_pp) != NULL; hdh_pp = &hdh_p->hdh_next)
1622 if (hdh_p->sec == sec)
1624 /* Everything must go for SEC. */
1625 *hdh_pp = hdh_p->hdh_next;
1630 r_type = ELF32_R_TYPE (rela->r_info);
1631 r_type = elf32_hppa_optimized_tls_reloc (info, r_type, eh != NULL);
1635 case R_PARISC_DLTIND14F:
1636 case R_PARISC_DLTIND14R:
1637 case R_PARISC_DLTIND21L:
1638 case R_PARISC_TLS_GD21L:
1639 case R_PARISC_TLS_GD14R:
1640 case R_PARISC_TLS_IE21L:
1641 case R_PARISC_TLS_IE14R:
1644 if (eh->got.refcount > 0)
1645 eh->got.refcount -= 1;
1647 else if (local_got_refcounts != NULL)
1649 if (local_got_refcounts[r_symndx] > 0)
1650 local_got_refcounts[r_symndx] -= 1;
1654 case R_PARISC_TLS_LDM21L:
1655 case R_PARISC_TLS_LDM14R:
1656 htab->tls_ldm_got.refcount -= 1;
1659 case R_PARISC_PCREL12F:
1660 case R_PARISC_PCREL17C:
1661 case R_PARISC_PCREL17F:
1662 case R_PARISC_PCREL22F:
1665 if (eh->plt.refcount > 0)
1666 eh->plt.refcount -= 1;
1670 case R_PARISC_PLABEL14R:
1671 case R_PARISC_PLABEL21L:
1672 case R_PARISC_PLABEL32:
1675 if (eh->plt.refcount > 0)
1676 eh->plt.refcount -= 1;
1678 else if (local_plt_refcounts != NULL)
1680 if (local_plt_refcounts[r_symndx] > 0)
1681 local_plt_refcounts[r_symndx] -= 1;
1693 /* Support for core dump NOTE sections. */
1696 elf32_hppa_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
1701 switch (note->descsz)
1706 case 396: /* Linux/hppa */
1708 elf_tdata (abfd)->core->signal = bfd_get_16 (abfd, note->descdata + 12);
1711 elf_tdata (abfd)->core->lwpid = bfd_get_32 (abfd, note->descdata + 24);
1720 /* Make a ".reg/999" section. */
1721 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
1722 size, note->descpos + offset);
1726 elf32_hppa_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
1728 switch (note->descsz)
1733 case 124: /* Linux/hppa elf_prpsinfo. */
1734 elf_tdata (abfd)->core->program
1735 = _bfd_elfcore_strndup (abfd, note->descdata + 28, 16);
1736 elf_tdata (abfd)->core->command
1737 = _bfd_elfcore_strndup (abfd, note->descdata + 44, 80);
1740 /* Note that for some reason, a spurious space is tacked
1741 onto the end of the args in some (at least one anyway)
1742 implementations, so strip it off if it exists. */
1744 char *command = elf_tdata (abfd)->core->command;
1745 int n = strlen (command);
1747 if (0 < n && command[n - 1] == ' ')
1748 command[n - 1] = '\0';
1754 /* Our own version of hide_symbol, so that we can keep plt entries for
1758 elf32_hppa_hide_symbol (struct bfd_link_info *info,
1759 struct elf_link_hash_entry *eh,
1760 bfd_boolean force_local)
1764 eh->forced_local = 1;
1765 if (eh->dynindx != -1)
1768 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
1772 /* PR 16082: Remove version information from hidden symbol. */
1773 eh->verinfo.verdef = NULL;
1774 eh->verinfo.vertree = NULL;
1777 /* STT_GNU_IFUNC symbol must go through PLT. */
1778 if (! hppa_elf_hash_entry (eh)->plabel
1779 && eh->type != STT_GNU_IFUNC)
1782 eh->plt = elf_hash_table (info)->init_plt_offset;
1786 /* Adjust a symbol defined by a dynamic object and referenced by a
1787 regular object. The current definition is in some section of the
1788 dynamic object, but we're not including those sections. We have to
1789 change the definition to something the rest of the link can
1793 elf32_hppa_adjust_dynamic_symbol (struct bfd_link_info *info,
1794 struct elf_link_hash_entry *eh)
1796 struct elf32_hppa_link_hash_table *htab;
1797 asection *sec, *srel;
1799 /* If this is a function, put it in the procedure linkage table. We
1800 will fill in the contents of the procedure linkage table later. */
1801 if (eh->type == STT_FUNC
1804 /* If the symbol is used by a plabel, we must allocate a PLT slot.
1805 The refcounts are not reliable when it has been hidden since
1806 hide_symbol can be called before the plabel flag is set. */
1807 if (hppa_elf_hash_entry (eh)->plabel
1808 && eh->plt.refcount <= 0)
1809 eh->plt.refcount = 1;
1811 if (eh->plt.refcount <= 0
1813 && eh->root.type != bfd_link_hash_defweak
1814 && ! hppa_elf_hash_entry (eh)->plabel
1815 && (!bfd_link_pic (info) || SYMBOLIC_BIND (info, eh))))
1817 /* The .plt entry is not needed when:
1818 a) Garbage collection has removed all references to the
1820 b) We know for certain the symbol is defined in this
1821 object, and it's not a weak definition, nor is the symbol
1822 used by a plabel relocation. Either this object is the
1823 application or we are doing a shared symbolic link. */
1825 eh->plt.offset = (bfd_vma) -1;
1832 eh->plt.offset = (bfd_vma) -1;
1834 /* If this is a weak symbol, and there is a real definition, the
1835 processor independent code will have arranged for us to see the
1836 real definition first, and we can just use the same value. */
1837 if (eh->u.weakdef != NULL)
1839 if (eh->u.weakdef->root.type != bfd_link_hash_defined
1840 && eh->u.weakdef->root.type != bfd_link_hash_defweak)
1842 eh->root.u.def.section = eh->u.weakdef->root.u.def.section;
1843 eh->root.u.def.value = eh->u.weakdef->root.u.def.value;
1844 if (ELIMINATE_COPY_RELOCS)
1845 eh->non_got_ref = eh->u.weakdef->non_got_ref;
1849 /* This is a reference to a symbol defined by a dynamic object which
1850 is not a function. */
1852 /* If we are creating a shared library, we must presume that the
1853 only references to the symbol are via the global offset table.
1854 For such cases we need not do anything here; the relocations will
1855 be handled correctly by relocate_section. */
1856 if (bfd_link_pic (info))
1859 /* If there are no references to this symbol that do not use the
1860 GOT, we don't need to generate a copy reloc. */
1861 if (!eh->non_got_ref)
1864 if (ELIMINATE_COPY_RELOCS)
1866 struct elf32_hppa_link_hash_entry *hh;
1867 struct elf32_hppa_dyn_reloc_entry *hdh_p;
1869 hh = hppa_elf_hash_entry (eh);
1870 for (hdh_p = hh->dyn_relocs; hdh_p != NULL; hdh_p = hdh_p->hdh_next)
1872 sec = hdh_p->sec->output_section;
1873 if (sec != NULL && (sec->flags & SEC_READONLY) != 0)
1877 /* If we didn't find any dynamic relocs in read-only sections, then
1878 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
1881 eh->non_got_ref = 0;
1886 /* We must allocate the symbol in our .dynbss section, which will
1887 become part of the .bss section of the executable. There will be
1888 an entry for this symbol in the .dynsym section. The dynamic
1889 object will contain position independent code, so all references
1890 from the dynamic object to this symbol will go through the global
1891 offset table. The dynamic linker will use the .dynsym entry to
1892 determine the address it must put in the global offset table, so
1893 both the dynamic object and the regular object will refer to the
1894 same memory location for the variable. */
1896 htab = hppa_link_hash_table (info);
1900 /* We must generate a COPY reloc to tell the dynamic linker to
1901 copy the initial value out of the dynamic object and into the
1902 runtime process image. */
1903 if ((eh->root.u.def.section->flags & SEC_READONLY) != 0)
1905 sec = htab->etab.sdynrelro;
1906 srel = htab->etab.sreldynrelro;
1910 sec = htab->etab.sdynbss;
1911 srel = htab->etab.srelbss;
1913 if ((eh->root.u.def.section->flags & SEC_ALLOC) != 0 && eh->size != 0)
1915 srel->size += sizeof (Elf32_External_Rela);
1919 return _bfd_elf_adjust_dynamic_copy (info, eh, sec);
1922 /* If EH is undefined, make it dynamic if that makes sense. */
1925 ensure_undef_dynamic (struct bfd_link_info *info,
1926 struct elf_link_hash_entry *eh)
1928 struct elf_link_hash_table *htab = elf_hash_table (info);
1930 if (htab->dynamic_sections_created
1931 && (eh->root.type == bfd_link_hash_undefweak
1932 || eh->root.type == bfd_link_hash_undefined)
1933 && eh->dynindx == -1
1934 && !eh->forced_local
1935 && eh->type != STT_PARISC_MILLI
1936 && !UNDEFWEAK_NO_DYNAMIC_RELOC (info, eh)
1937 && ELF_ST_VISIBILITY (eh->other) == STV_DEFAULT)
1938 return bfd_elf_link_record_dynamic_symbol (info, eh);
1942 /* Allocate space in the .plt for entries that won't have relocations.
1943 ie. plabel entries. */
1946 allocate_plt_static (struct elf_link_hash_entry *eh, void *inf)
1948 struct bfd_link_info *info;
1949 struct elf32_hppa_link_hash_table *htab;
1950 struct elf32_hppa_link_hash_entry *hh;
1953 if (eh->root.type == bfd_link_hash_indirect)
1956 info = (struct bfd_link_info *) inf;
1957 hh = hppa_elf_hash_entry (eh);
1958 htab = hppa_link_hash_table (info);
1962 if (htab->etab.dynamic_sections_created
1963 && eh->plt.refcount > 0)
1965 if (!ensure_undef_dynamic (info, eh))
1968 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, bfd_link_pic (info), eh))
1970 /* Allocate these later. From this point on, h->plabel
1971 means that the plt entry is only used by a plabel.
1972 We'll be using a normal plt entry for this symbol, so
1973 clear the plabel indicator. */
1977 else if (hh->plabel)
1979 /* Make an entry in the .plt section for plabel references
1980 that won't have a .plt entry for other reasons. */
1981 sec = htab->etab.splt;
1982 eh->plt.offset = sec->size;
1983 sec->size += PLT_ENTRY_SIZE;
1984 if (bfd_link_pic (info))
1985 htab->etab.srelplt->size += sizeof (Elf32_External_Rela);
1989 /* No .plt entry needed. */
1990 eh->plt.offset = (bfd_vma) -1;
1996 eh->plt.offset = (bfd_vma) -1;
2003 /* Allocate space in .plt, .got and associated reloc sections for
2007 allocate_dynrelocs (struct elf_link_hash_entry *eh, void *inf)
2009 struct bfd_link_info *info;
2010 struct elf32_hppa_link_hash_table *htab;
2012 struct elf32_hppa_link_hash_entry *hh;
2013 struct elf32_hppa_dyn_reloc_entry *hdh_p;
2015 if (eh->root.type == bfd_link_hash_indirect)
2019 htab = hppa_link_hash_table (info);
2023 hh = hppa_elf_hash_entry (eh);
2025 if (htab->etab.dynamic_sections_created
2026 && eh->plt.offset != (bfd_vma) -1
2028 && eh->plt.refcount > 0)
2030 /* Make an entry in the .plt section. */
2031 sec = htab->etab.splt;
2032 eh->plt.offset = sec->size;
2033 sec->size += PLT_ENTRY_SIZE;
2035 /* We also need to make an entry in the .rela.plt section. */
2036 htab->etab.srelplt->size += sizeof (Elf32_External_Rela);
2037 htab->need_plt_stub = 1;
2040 if (eh->got.refcount > 0)
2042 if (!ensure_undef_dynamic (info, eh))
2045 sec = htab->etab.sgot;
2046 eh->got.offset = sec->size;
2047 sec->size += GOT_ENTRY_SIZE;
2048 /* R_PARISC_TLS_GD* needs two GOT entries */
2049 if ((hh->tls_type & (GOT_TLS_GD | GOT_TLS_IE)) == (GOT_TLS_GD | GOT_TLS_IE))
2050 sec->size += GOT_ENTRY_SIZE * 2;
2051 else if ((hh->tls_type & GOT_TLS_GD) == GOT_TLS_GD)
2052 sec->size += GOT_ENTRY_SIZE;
2053 if (htab->etab.dynamic_sections_created
2054 && (bfd_link_pic (info)
2055 || (eh->dynindx != -1
2056 && !eh->forced_local)))
2058 htab->etab.srelgot->size += sizeof (Elf32_External_Rela);
2059 if ((hh->tls_type & (GOT_TLS_GD | GOT_TLS_IE)) == (GOT_TLS_GD | GOT_TLS_IE))
2060 htab->etab.srelgot->size += 2 * sizeof (Elf32_External_Rela);
2061 else if ((hh->tls_type & GOT_TLS_GD) == GOT_TLS_GD)
2062 htab->etab.srelgot->size += sizeof (Elf32_External_Rela);
2066 eh->got.offset = (bfd_vma) -1;
2068 if (hh->dyn_relocs == NULL)
2071 /* If this is a -Bsymbolic shared link, then we need to discard all
2072 space allocated for dynamic pc-relative relocs against symbols
2073 defined in a regular object. For the normal shared case, discard
2074 space for relocs that have become local due to symbol visibility
2076 if (bfd_link_pic (info))
2078 /* Discard relocs on undefined syms with non-default visibility. */
2079 if ((eh->root.type == bfd_link_hash_undefined
2080 || eh->root.type == bfd_link_hash_undefweak)
2081 && (ELF_ST_VISIBILITY (eh->other) != STV_DEFAULT
2082 || UNDEFWEAK_NO_DYNAMIC_RELOC (info, eh)))
2083 hh->dyn_relocs = NULL;
2085 #if RELATIVE_DYNRELOCS
2086 else if (SYMBOL_CALLS_LOCAL (info, eh))
2088 struct elf32_hppa_dyn_reloc_entry **hdh_pp;
2090 for (hdh_pp = &hh->dyn_relocs; (hdh_p = *hdh_pp) != NULL; )
2092 hdh_p->count -= hdh_p->relative_count;
2093 hdh_p->relative_count = 0;
2094 if (hdh_p->count == 0)
2095 *hdh_pp = hdh_p->hdh_next;
2097 hdh_pp = &hdh_p->hdh_next;
2102 if (hh->dyn_relocs != NULL)
2104 if (!ensure_undef_dynamic (info, eh))
2110 /* For the non-shared case, discard space for relocs against
2111 symbols which turn out to need copy relocs or are not
2114 if (!eh->non_got_ref
2115 && ((ELIMINATE_COPY_RELOCS
2117 && !eh->def_regular)
2118 || (htab->etab.dynamic_sections_created
2119 && (eh->root.type == bfd_link_hash_undefweak
2120 || eh->root.type == bfd_link_hash_undefined))))
2122 if (!ensure_undef_dynamic (info, eh))
2125 if (eh->dynindx == -1)
2126 hh->dyn_relocs = NULL;
2129 hh->dyn_relocs = NULL;
2132 /* Finally, allocate space. */
2133 for (hdh_p = hh->dyn_relocs; hdh_p != NULL; hdh_p = hdh_p->hdh_next)
2135 asection *sreloc = elf_section_data (hdh_p->sec)->sreloc;
2136 sreloc->size += hdh_p->count * sizeof (Elf32_External_Rela);
2142 /* This function is called via elf_link_hash_traverse to force
2143 millicode symbols local so they do not end up as globals in the
2144 dynamic symbol table. We ought to be able to do this in
2145 adjust_dynamic_symbol, but our adjust_dynamic_symbol is not called
2146 for all dynamic symbols. Arguably, this is a bug in
2147 elf_adjust_dynamic_symbol. */
2150 clobber_millicode_symbols (struct elf_link_hash_entry *eh,
2151 struct bfd_link_info *info)
2153 if (eh->type == STT_PARISC_MILLI
2154 && !eh->forced_local)
2156 elf32_hppa_hide_symbol (info, eh, TRUE);
2161 /* Find any dynamic relocs that apply to read-only sections. */
2164 readonly_dynrelocs (struct elf_link_hash_entry *eh, void *inf)
2166 struct elf32_hppa_link_hash_entry *hh;
2167 struct elf32_hppa_dyn_reloc_entry *hdh_p;
2169 hh = hppa_elf_hash_entry (eh);
2170 for (hdh_p = hh->dyn_relocs; hdh_p != NULL; hdh_p = hdh_p->hdh_next)
2172 asection *sec = hdh_p->sec->output_section;
2174 if (sec != NULL && (sec->flags & SEC_READONLY) != 0)
2176 struct bfd_link_info *info = inf;
2178 info->flags |= DF_TEXTREL;
2180 /* Not an error, just cut short the traversal. */
2187 /* Set the sizes of the dynamic sections. */
2190 elf32_hppa_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
2191 struct bfd_link_info *info)
2193 struct elf32_hppa_link_hash_table *htab;
2199 htab = hppa_link_hash_table (info);
2203 dynobj = htab->etab.dynobj;
2207 if (htab->etab.dynamic_sections_created)
2209 /* Set the contents of the .interp section to the interpreter. */
2210 if (bfd_link_executable (info) && !info->nointerp)
2212 sec = bfd_get_linker_section (dynobj, ".interp");
2215 sec->size = sizeof ELF_DYNAMIC_INTERPRETER;
2216 sec->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
2219 /* Force millicode symbols local. */
2220 elf_link_hash_traverse (&htab->etab,
2221 clobber_millicode_symbols,
2225 /* Set up .got and .plt offsets for local syms, and space for local
2227 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
2229 bfd_signed_vma *local_got;
2230 bfd_signed_vma *end_local_got;
2231 bfd_signed_vma *local_plt;
2232 bfd_signed_vma *end_local_plt;
2233 bfd_size_type locsymcount;
2234 Elf_Internal_Shdr *symtab_hdr;
2236 char *local_tls_type;
2238 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour)
2241 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
2243 struct elf32_hppa_dyn_reloc_entry *hdh_p;
2245 for (hdh_p = ((struct elf32_hppa_dyn_reloc_entry *)
2246 elf_section_data (sec)->local_dynrel);
2248 hdh_p = hdh_p->hdh_next)
2250 if (!bfd_is_abs_section (hdh_p->sec)
2251 && bfd_is_abs_section (hdh_p->sec->output_section))
2253 /* Input section has been discarded, either because
2254 it is a copy of a linkonce section or due to
2255 linker script /DISCARD/, so we'll be discarding
2258 else if (hdh_p->count != 0)
2260 srel = elf_section_data (hdh_p->sec)->sreloc;
2261 srel->size += hdh_p->count * sizeof (Elf32_External_Rela);
2262 if ((hdh_p->sec->output_section->flags & SEC_READONLY) != 0)
2263 info->flags |= DF_TEXTREL;
2268 local_got = elf_local_got_refcounts (ibfd);
2272 symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
2273 locsymcount = symtab_hdr->sh_info;
2274 end_local_got = local_got + locsymcount;
2275 local_tls_type = hppa_elf_local_got_tls_type (ibfd);
2276 sec = htab->etab.sgot;
2277 srel = htab->etab.srelgot;
2278 for (; local_got < end_local_got; ++local_got)
2282 *local_got = sec->size;
2283 sec->size += GOT_ENTRY_SIZE;
2284 if ((*local_tls_type & (GOT_TLS_GD | GOT_TLS_IE)) == (GOT_TLS_GD | GOT_TLS_IE))
2285 sec->size += 2 * GOT_ENTRY_SIZE;
2286 else if ((*local_tls_type & GOT_TLS_GD) == GOT_TLS_GD)
2287 sec->size += GOT_ENTRY_SIZE;
2288 if (bfd_link_pic (info))
2290 srel->size += sizeof (Elf32_External_Rela);
2291 if ((*local_tls_type & (GOT_TLS_GD | GOT_TLS_IE)) == (GOT_TLS_GD | GOT_TLS_IE))
2292 srel->size += 2 * sizeof (Elf32_External_Rela);
2293 else if ((*local_tls_type & GOT_TLS_GD) == GOT_TLS_GD)
2294 srel->size += sizeof (Elf32_External_Rela);
2298 *local_got = (bfd_vma) -1;
2303 local_plt = end_local_got;
2304 end_local_plt = local_plt + locsymcount;
2305 if (! htab->etab.dynamic_sections_created)
2307 /* Won't be used, but be safe. */
2308 for (; local_plt < end_local_plt; ++local_plt)
2309 *local_plt = (bfd_vma) -1;
2313 sec = htab->etab.splt;
2314 srel = htab->etab.srelplt;
2315 for (; local_plt < end_local_plt; ++local_plt)
2319 *local_plt = sec->size;
2320 sec->size += PLT_ENTRY_SIZE;
2321 if (bfd_link_pic (info))
2322 srel->size += sizeof (Elf32_External_Rela);
2325 *local_plt = (bfd_vma) -1;
2330 if (htab->tls_ldm_got.refcount > 0)
2332 /* Allocate 2 got entries and 1 dynamic reloc for
2333 R_PARISC_TLS_DTPMOD32 relocs. */
2334 htab->tls_ldm_got.offset = htab->etab.sgot->size;
2335 htab->etab.sgot->size += (GOT_ENTRY_SIZE * 2);
2336 htab->etab.srelgot->size += sizeof (Elf32_External_Rela);
2339 htab->tls_ldm_got.offset = -1;
2341 /* Do all the .plt entries without relocs first. The dynamic linker
2342 uses the last .plt reloc to find the end of the .plt (and hence
2343 the start of the .got) for lazy linking. */
2344 elf_link_hash_traverse (&htab->etab, allocate_plt_static, info);
2346 /* Allocate global sym .plt and .got entries, and space for global
2347 sym dynamic relocs. */
2348 elf_link_hash_traverse (&htab->etab, allocate_dynrelocs, info);
2350 /* The check_relocs and adjust_dynamic_symbol entry points have
2351 determined the sizes of the various dynamic sections. Allocate
2354 for (sec = dynobj->sections; sec != NULL; sec = sec->next)
2356 if ((sec->flags & SEC_LINKER_CREATED) == 0)
2359 if (sec == htab->etab.splt)
2361 if (htab->need_plt_stub)
2363 /* Make space for the plt stub at the end of the .plt
2364 section. We want this stub right at the end, up
2365 against the .got section. */
2366 int gotalign = bfd_section_alignment (dynobj, htab->etab.sgot);
2367 int pltalign = bfd_section_alignment (dynobj, sec);
2370 if (gotalign > pltalign)
2371 (void) bfd_set_section_alignment (dynobj, sec, gotalign);
2372 mask = ((bfd_size_type) 1 << gotalign) - 1;
2373 sec->size = (sec->size + sizeof (plt_stub) + mask) & ~mask;
2376 else if (sec == htab->etab.sgot
2377 || sec == htab->etab.sdynbss
2378 || sec == htab->etab.sdynrelro)
2380 else if (CONST_STRNEQ (bfd_get_section_name (dynobj, sec), ".rela"))
2384 /* Remember whether there are any reloc sections other
2386 if (sec != htab->etab.srelplt)
2389 /* We use the reloc_count field as a counter if we need
2390 to copy relocs into the output file. */
2391 sec->reloc_count = 0;
2396 /* It's not one of our sections, so don't allocate space. */
2402 /* If we don't need this section, strip it from the
2403 output file. This is mostly to handle .rela.bss and
2404 .rela.plt. We must create both sections in
2405 create_dynamic_sections, because they must be created
2406 before the linker maps input sections to output
2407 sections. The linker does that before
2408 adjust_dynamic_symbol is called, and it is that
2409 function which decides whether anything needs to go
2410 into these sections. */
2411 sec->flags |= SEC_EXCLUDE;
2415 if ((sec->flags & SEC_HAS_CONTENTS) == 0)
2418 /* Allocate memory for the section contents. Zero it, because
2419 we may not fill in all the reloc sections. */
2420 sec->contents = bfd_zalloc (dynobj, sec->size);
2421 if (sec->contents == NULL)
2425 if (htab->etab.dynamic_sections_created)
2427 /* Like IA-64 and HPPA64, always create a DT_PLTGOT. It
2428 actually has nothing to do with the PLT, it is how we
2429 communicate the LTP value of a load module to the dynamic
2431 #define add_dynamic_entry(TAG, VAL) \
2432 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
2434 if (!add_dynamic_entry (DT_PLTGOT, 0))
2437 /* Add some entries to the .dynamic section. We fill in the
2438 values later, in elf32_hppa_finish_dynamic_sections, but we
2439 must add the entries now so that we get the correct size for
2440 the .dynamic section. The DT_DEBUG entry is filled in by the
2441 dynamic linker and used by the debugger. */
2442 if (bfd_link_executable (info))
2444 if (!add_dynamic_entry (DT_DEBUG, 0))
2448 if (htab->etab.srelplt->size != 0)
2450 if (!add_dynamic_entry (DT_PLTRELSZ, 0)
2451 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
2452 || !add_dynamic_entry (DT_JMPREL, 0))
2458 if (!add_dynamic_entry (DT_RELA, 0)
2459 || !add_dynamic_entry (DT_RELASZ, 0)
2460 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf32_External_Rela)))
2463 /* If any dynamic relocs apply to a read-only section,
2464 then we need a DT_TEXTREL entry. */
2465 if ((info->flags & DF_TEXTREL) == 0)
2466 elf_link_hash_traverse (&htab->etab, readonly_dynrelocs, info);
2468 if ((info->flags & DF_TEXTREL) != 0)
2470 if (!add_dynamic_entry (DT_TEXTREL, 0))
2475 #undef add_dynamic_entry
2480 /* External entry points for sizing and building linker stubs. */
2482 /* Set up various things so that we can make a list of input sections
2483 for each output section included in the link. Returns -1 on error,
2484 0 when no stubs will be needed, and 1 on success. */
2487 elf32_hppa_setup_section_lists (bfd *output_bfd, struct bfd_link_info *info)
2490 unsigned int bfd_count;
2491 unsigned int top_id, top_index;
2493 asection **input_list, **list;
2495 struct elf32_hppa_link_hash_table *htab = hppa_link_hash_table (info);
2500 /* Count the number of input BFDs and find the top input section id. */
2501 for (input_bfd = info->input_bfds, bfd_count = 0, top_id = 0;
2503 input_bfd = input_bfd->link.next)
2506 for (section = input_bfd->sections;
2508 section = section->next)
2510 if (top_id < section->id)
2511 top_id = section->id;
2514 htab->bfd_count = bfd_count;
2516 amt = sizeof (struct map_stub) * (top_id + 1);
2517 htab->stub_group = bfd_zmalloc (amt);
2518 if (htab->stub_group == NULL)
2521 /* We can't use output_bfd->section_count here to find the top output
2522 section index as some sections may have been removed, and
2523 strip_excluded_output_sections doesn't renumber the indices. */
2524 for (section = output_bfd->sections, top_index = 0;
2526 section = section->next)
2528 if (top_index < section->index)
2529 top_index = section->index;
2532 htab->top_index = top_index;
2533 amt = sizeof (asection *) * (top_index + 1);
2534 input_list = bfd_malloc (amt);
2535 htab->input_list = input_list;
2536 if (input_list == NULL)
2539 /* For sections we aren't interested in, mark their entries with a
2540 value we can check later. */
2541 list = input_list + top_index;
2543 *list = bfd_abs_section_ptr;
2544 while (list-- != input_list);
2546 for (section = output_bfd->sections;
2548 section = section->next)
2550 if ((section->flags & SEC_CODE) != 0)
2551 input_list[section->index] = NULL;
2557 /* The linker repeatedly calls this function for each input section,
2558 in the order that input sections are linked into output sections.
2559 Build lists of input sections to determine groupings between which
2560 we may insert linker stubs. */
2563 elf32_hppa_next_input_section (struct bfd_link_info *info, asection *isec)
2565 struct elf32_hppa_link_hash_table *htab = hppa_link_hash_table (info);
2570 if (isec->output_section->index <= htab->top_index)
2572 asection **list = htab->input_list + isec->output_section->index;
2573 if (*list != bfd_abs_section_ptr)
2575 /* Steal the link_sec pointer for our list. */
2576 #define PREV_SEC(sec) (htab->stub_group[(sec)->id].link_sec)
2577 /* This happens to make the list in reverse order,
2578 which is what we want. */
2579 PREV_SEC (isec) = *list;
2585 /* See whether we can group stub sections together. Grouping stub
2586 sections may result in fewer stubs. More importantly, we need to
2587 put all .init* and .fini* stubs at the beginning of the .init or
2588 .fini output sections respectively, because glibc splits the
2589 _init and _fini functions into multiple parts. Putting a stub in
2590 the middle of a function is not a good idea. */
2593 group_sections (struct elf32_hppa_link_hash_table *htab,
2594 bfd_size_type stub_group_size,
2595 bfd_boolean stubs_always_before_branch)
2597 asection **list = htab->input_list + htab->top_index;
2600 asection *tail = *list;
2601 if (tail == bfd_abs_section_ptr)
2603 while (tail != NULL)
2607 bfd_size_type total;
2608 bfd_boolean big_sec;
2612 big_sec = total >= stub_group_size;
2614 while ((prev = PREV_SEC (curr)) != NULL
2615 && ((total += curr->output_offset - prev->output_offset)
2619 /* OK, the size from the start of CURR to the end is less
2620 than 240000 bytes and thus can be handled by one stub
2621 section. (or the tail section is itself larger than
2622 240000 bytes, in which case we may be toast.)
2623 We should really be keeping track of the total size of
2624 stubs added here, as stubs contribute to the final output
2625 section size. That's a little tricky, and this way will
2626 only break if stubs added total more than 22144 bytes, or
2627 2768 long branch stubs. It seems unlikely for more than
2628 2768 different functions to be called, especially from
2629 code only 240000 bytes long. This limit used to be
2630 250000, but c++ code tends to generate lots of little
2631 functions, and sometimes violated the assumption. */
2634 prev = PREV_SEC (tail);
2635 /* Set up this stub group. */
2636 htab->stub_group[tail->id].link_sec = curr;
2638 while (tail != curr && (tail = prev) != NULL);
2640 /* But wait, there's more! Input sections up to 240000
2641 bytes before the stub section can be handled by it too.
2642 Don't do this if we have a really large section after the
2643 stubs, as adding more stubs increases the chance that
2644 branches may not reach into the stub section. */
2645 if (!stubs_always_before_branch && !big_sec)
2649 && ((total += tail->output_offset - prev->output_offset)
2653 prev = PREV_SEC (tail);
2654 htab->stub_group[tail->id].link_sec = curr;
2660 while (list-- != htab->input_list);
2661 free (htab->input_list);
2665 /* Read in all local syms for all input bfds, and create hash entries
2666 for export stubs if we are building a multi-subspace shared lib.
2667 Returns -1 on error, 1 if export stubs created, 0 otherwise. */
2670 get_local_syms (bfd *output_bfd, bfd *input_bfd, struct bfd_link_info *info)
2672 unsigned int bfd_indx;
2673 Elf_Internal_Sym *local_syms, **all_local_syms;
2674 int stub_changed = 0;
2675 struct elf32_hppa_link_hash_table *htab = hppa_link_hash_table (info);
2680 /* We want to read in symbol extension records only once. To do this
2681 we need to read in the local symbols in parallel and save them for
2682 later use; so hold pointers to the local symbols in an array. */
2683 bfd_size_type amt = sizeof (Elf_Internal_Sym *) * htab->bfd_count;
2684 all_local_syms = bfd_zmalloc (amt);
2685 htab->all_local_syms = all_local_syms;
2686 if (all_local_syms == NULL)
2689 /* Walk over all the input BFDs, swapping in local symbols.
2690 If we are creating a shared library, create hash entries for the
2694 input_bfd = input_bfd->link.next, bfd_indx++)
2696 Elf_Internal_Shdr *symtab_hdr;
2698 /* We'll need the symbol table in a second. */
2699 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
2700 if (symtab_hdr->sh_info == 0)
2703 /* We need an array of the local symbols attached to the input bfd. */
2704 local_syms = (Elf_Internal_Sym *) symtab_hdr->contents;
2705 if (local_syms == NULL)
2707 local_syms = bfd_elf_get_elf_syms (input_bfd, symtab_hdr,
2708 symtab_hdr->sh_info, 0,
2710 /* Cache them for elf_link_input_bfd. */
2711 symtab_hdr->contents = (unsigned char *) local_syms;
2713 if (local_syms == NULL)
2716 all_local_syms[bfd_indx] = local_syms;
2718 if (bfd_link_pic (info) && htab->multi_subspace)
2720 struct elf_link_hash_entry **eh_syms;
2721 struct elf_link_hash_entry **eh_symend;
2722 unsigned int symcount;
2724 symcount = (symtab_hdr->sh_size / sizeof (Elf32_External_Sym)
2725 - symtab_hdr->sh_info);
2726 eh_syms = (struct elf_link_hash_entry **) elf_sym_hashes (input_bfd);
2727 eh_symend = (struct elf_link_hash_entry **) (eh_syms + symcount);
2729 /* Look through the global syms for functions; We need to
2730 build export stubs for all globally visible functions. */
2731 for (; eh_syms < eh_symend; eh_syms++)
2733 struct elf32_hppa_link_hash_entry *hh;
2735 hh = hppa_elf_hash_entry (*eh_syms);
2737 while (hh->eh.root.type == bfd_link_hash_indirect
2738 || hh->eh.root.type == bfd_link_hash_warning)
2739 hh = hppa_elf_hash_entry (hh->eh.root.u.i.link);
2741 /* At this point in the link, undefined syms have been
2742 resolved, so we need to check that the symbol was
2743 defined in this BFD. */
2744 if ((hh->eh.root.type == bfd_link_hash_defined
2745 || hh->eh.root.type == bfd_link_hash_defweak)
2746 && hh->eh.type == STT_FUNC
2747 && hh->eh.root.u.def.section->output_section != NULL
2748 && (hh->eh.root.u.def.section->output_section->owner
2750 && hh->eh.root.u.def.section->owner == input_bfd
2751 && hh->eh.def_regular
2752 && !hh->eh.forced_local
2753 && ELF_ST_VISIBILITY (hh->eh.other) == STV_DEFAULT)
2756 const char *stub_name;
2757 struct elf32_hppa_stub_hash_entry *hsh;
2759 sec = hh->eh.root.u.def.section;
2760 stub_name = hh_name (hh);
2761 hsh = hppa_stub_hash_lookup (&htab->bstab,
2766 hsh = hppa_add_stub (stub_name, sec, htab);
2770 hsh->target_value = hh->eh.root.u.def.value;
2771 hsh->target_section = hh->eh.root.u.def.section;
2772 hsh->stub_type = hppa_stub_export;
2778 /* xgettext:c-format */
2779 _bfd_error_handler (_("%B: duplicate export stub %s"),
2780 input_bfd, stub_name);
2787 return stub_changed;
2790 /* Determine and set the size of the stub section for a final link.
2792 The basic idea here is to examine all the relocations looking for
2793 PC-relative calls to a target that is unreachable with a "bl"
2797 elf32_hppa_size_stubs
2798 (bfd *output_bfd, bfd *stub_bfd, struct bfd_link_info *info,
2799 bfd_boolean multi_subspace, bfd_signed_vma group_size,
2800 asection * (*add_stub_section) (const char *, asection *),
2801 void (*layout_sections_again) (void))
2803 bfd_size_type stub_group_size;
2804 bfd_boolean stubs_always_before_branch;
2805 bfd_boolean stub_changed;
2806 struct elf32_hppa_link_hash_table *htab = hppa_link_hash_table (info);
2811 /* Stash our params away. */
2812 htab->stub_bfd = stub_bfd;
2813 htab->multi_subspace = multi_subspace;
2814 htab->add_stub_section = add_stub_section;
2815 htab->layout_sections_again = layout_sections_again;
2816 stubs_always_before_branch = group_size < 0;
2818 stub_group_size = -group_size;
2820 stub_group_size = group_size;
2821 if (stub_group_size == 1)
2823 /* Default values. */
2824 if (stubs_always_before_branch)
2826 stub_group_size = 7680000;
2827 if (htab->has_17bit_branch || htab->multi_subspace)
2828 stub_group_size = 240000;
2829 if (htab->has_12bit_branch)
2830 stub_group_size = 7500;
2834 stub_group_size = 6971392;
2835 if (htab->has_17bit_branch || htab->multi_subspace)
2836 stub_group_size = 217856;
2837 if (htab->has_12bit_branch)
2838 stub_group_size = 6808;
2842 group_sections (htab, stub_group_size, stubs_always_before_branch);
2844 switch (get_local_syms (output_bfd, info->input_bfds, info))
2847 if (htab->all_local_syms)
2848 goto error_ret_free_local;
2852 stub_changed = FALSE;
2856 stub_changed = TRUE;
2863 unsigned int bfd_indx;
2866 for (input_bfd = info->input_bfds, bfd_indx = 0;
2868 input_bfd = input_bfd->link.next, bfd_indx++)
2870 Elf_Internal_Shdr *symtab_hdr;
2872 Elf_Internal_Sym *local_syms;
2874 /* We'll need the symbol table in a second. */
2875 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
2876 if (symtab_hdr->sh_info == 0)
2879 local_syms = htab->all_local_syms[bfd_indx];
2881 /* Walk over each section attached to the input bfd. */
2882 for (section = input_bfd->sections;
2884 section = section->next)
2886 Elf_Internal_Rela *internal_relocs, *irelaend, *irela;
2888 /* If there aren't any relocs, then there's nothing more
2890 if ((section->flags & SEC_RELOC) == 0
2891 || section->reloc_count == 0)
2894 /* If this section is a link-once section that will be
2895 discarded, then don't create any stubs. */
2896 if (section->output_section == NULL
2897 || section->output_section->owner != output_bfd)
2900 /* Get the relocs. */
2902 = _bfd_elf_link_read_relocs (input_bfd, section, NULL, NULL,
2904 if (internal_relocs == NULL)
2905 goto error_ret_free_local;
2907 /* Now examine each relocation. */
2908 irela = internal_relocs;
2909 irelaend = irela + section->reloc_count;
2910 for (; irela < irelaend; irela++)
2912 unsigned int r_type, r_indx;
2913 enum elf32_hppa_stub_type stub_type;
2914 struct elf32_hppa_stub_hash_entry *hsh;
2917 bfd_vma destination;
2918 struct elf32_hppa_link_hash_entry *hh;
2920 const asection *id_sec;
2922 r_type = ELF32_R_TYPE (irela->r_info);
2923 r_indx = ELF32_R_SYM (irela->r_info);
2925 if (r_type >= (unsigned int) R_PARISC_UNIMPLEMENTED)
2927 bfd_set_error (bfd_error_bad_value);
2928 error_ret_free_internal:
2929 if (elf_section_data (section)->relocs == NULL)
2930 free (internal_relocs);
2931 goto error_ret_free_local;
2934 /* Only look for stubs on call instructions. */
2935 if (r_type != (unsigned int) R_PARISC_PCREL12F
2936 && r_type != (unsigned int) R_PARISC_PCREL17F
2937 && r_type != (unsigned int) R_PARISC_PCREL22F)
2940 /* Now determine the call target, its name, value,
2946 if (r_indx < symtab_hdr->sh_info)
2948 /* It's a local symbol. */
2949 Elf_Internal_Sym *sym;
2950 Elf_Internal_Shdr *hdr;
2953 sym = local_syms + r_indx;
2954 if (ELF_ST_TYPE (sym->st_info) != STT_SECTION)
2955 sym_value = sym->st_value;
2956 shndx = sym->st_shndx;
2957 if (shndx < elf_numsections (input_bfd))
2959 hdr = elf_elfsections (input_bfd)[shndx];
2960 sym_sec = hdr->bfd_section;
2961 destination = (sym_value + irela->r_addend
2962 + sym_sec->output_offset
2963 + sym_sec->output_section->vma);
2968 /* It's an external symbol. */
2971 e_indx = r_indx - symtab_hdr->sh_info;
2972 hh = hppa_elf_hash_entry (elf_sym_hashes (input_bfd)[e_indx]);
2974 while (hh->eh.root.type == bfd_link_hash_indirect
2975 || hh->eh.root.type == bfd_link_hash_warning)
2976 hh = hppa_elf_hash_entry (hh->eh.root.u.i.link);
2978 if (hh->eh.root.type == bfd_link_hash_defined
2979 || hh->eh.root.type == bfd_link_hash_defweak)
2981 sym_sec = hh->eh.root.u.def.section;
2982 sym_value = hh->eh.root.u.def.value;
2983 if (sym_sec->output_section != NULL)
2984 destination = (sym_value + irela->r_addend
2985 + sym_sec->output_offset
2986 + sym_sec->output_section->vma);
2988 else if (hh->eh.root.type == bfd_link_hash_undefweak)
2990 if (! bfd_link_pic (info))
2993 else if (hh->eh.root.type == bfd_link_hash_undefined)
2995 if (! (info->unresolved_syms_in_objects == RM_IGNORE
2996 && (ELF_ST_VISIBILITY (hh->eh.other)
2998 && hh->eh.type != STT_PARISC_MILLI))
3003 bfd_set_error (bfd_error_bad_value);
3004 goto error_ret_free_internal;
3008 /* Determine what (if any) linker stub is needed. */
3009 stub_type = hppa_type_of_stub (section, irela, hh,
3011 if (stub_type == hppa_stub_none)
3014 /* Support for grouping stub sections. */
3015 id_sec = htab->stub_group[section->id].link_sec;
3017 /* Get the name of this stub. */
3018 stub_name = hppa_stub_name (id_sec, sym_sec, hh, irela);
3020 goto error_ret_free_internal;
3022 hsh = hppa_stub_hash_lookup (&htab->bstab,
3027 /* The proper stub has already been created. */
3032 hsh = hppa_add_stub (stub_name, section, htab);
3036 goto error_ret_free_internal;
3039 hsh->target_value = sym_value;
3040 hsh->target_section = sym_sec;
3041 hsh->stub_type = stub_type;
3042 if (bfd_link_pic (info))
3044 if (stub_type == hppa_stub_import)
3045 hsh->stub_type = hppa_stub_import_shared;
3046 else if (stub_type == hppa_stub_long_branch)
3047 hsh->stub_type = hppa_stub_long_branch_shared;
3050 stub_changed = TRUE;
3053 /* We're done with the internal relocs, free them. */
3054 if (elf_section_data (section)->relocs == NULL)
3055 free (internal_relocs);
3062 /* OK, we've added some stubs. Find out the new size of the
3064 for (stub_sec = htab->stub_bfd->sections;
3066 stub_sec = stub_sec->next)
3067 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
3070 bfd_hash_traverse (&htab->bstab, hppa_size_one_stub, htab);
3072 /* Ask the linker to do its stuff. */
3073 (*htab->layout_sections_again) ();
3074 stub_changed = FALSE;
3077 free (htab->all_local_syms);
3080 error_ret_free_local:
3081 free (htab->all_local_syms);
3085 /* For a final link, this function is called after we have sized the
3086 stubs to provide a value for __gp. */
3089 elf32_hppa_set_gp (bfd *abfd, struct bfd_link_info *info)
3091 struct bfd_link_hash_entry *h;
3092 asection *sec = NULL;
3095 h = bfd_link_hash_lookup (info->hash, "$global$", FALSE, FALSE, FALSE);
3098 && (h->type == bfd_link_hash_defined
3099 || h->type == bfd_link_hash_defweak))
3101 gp_val = h->u.def.value;
3102 sec = h->u.def.section;
3106 asection *splt = bfd_get_section_by_name (abfd, ".plt");
3107 asection *sgot = bfd_get_section_by_name (abfd, ".got");
3109 /* Choose to point our LTP at, in this order, one of .plt, .got,
3110 or .data, if these sections exist. In the case of choosing
3111 .plt try to make the LTP ideal for addressing anywhere in the
3112 .plt or .got with a 14 bit signed offset. Typically, the end
3113 of the .plt is the start of the .got, so choose .plt + 0x2000
3114 if either the .plt or .got is larger than 0x2000. If both
3115 the .plt and .got are smaller than 0x2000, choose the end of
3116 the .plt section. */
3117 sec = strcmp (bfd_get_target (abfd), "elf32-hppa-netbsd") == 0
3122 if (gp_val > 0x2000 || (sgot && sgot->size > 0x2000))
3132 if (strcmp (bfd_get_target (abfd), "elf32-hppa-netbsd") != 0)
3134 /* We know we don't have a .plt. If .got is large,
3136 if (sec->size > 0x2000)
3142 /* No .plt or .got. Who cares what the LTP is? */
3143 sec = bfd_get_section_by_name (abfd, ".data");
3149 h->type = bfd_link_hash_defined;
3150 h->u.def.value = gp_val;
3152 h->u.def.section = sec;
3154 h->u.def.section = bfd_abs_section_ptr;
3158 if (bfd_get_flavour (abfd) == bfd_target_elf_flavour)
3160 if (sec != NULL && sec->output_section != NULL)
3161 gp_val += sec->output_section->vma + sec->output_offset;
3163 elf_gp (abfd) = gp_val;
3168 /* Build all the stubs associated with the current output file. The
3169 stubs are kept in a hash table attached to the main linker hash
3170 table. We also set up the .plt entries for statically linked PIC
3171 functions here. This function is called via hppaelf_finish in the
3175 elf32_hppa_build_stubs (struct bfd_link_info *info)
3178 struct bfd_hash_table *table;
3179 struct elf32_hppa_link_hash_table *htab;
3181 htab = hppa_link_hash_table (info);
3185 for (stub_sec = htab->stub_bfd->sections;
3187 stub_sec = stub_sec->next)
3188 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0
3189 && stub_sec->size != 0)
3191 /* Allocate memory to hold the linker stubs. */
3192 stub_sec->contents = bfd_zalloc (htab->stub_bfd, stub_sec->size);
3193 if (stub_sec->contents == NULL)
3198 /* Build the stubs as directed by the stub hash table. */
3199 table = &htab->bstab;
3200 bfd_hash_traverse (table, hppa_build_one_stub, info);
3205 /* Return the base vma address which should be subtracted from the real
3206 address when resolving a dtpoff relocation.
3207 This is PT_TLS segment p_vaddr. */
3210 dtpoff_base (struct bfd_link_info *info)
3212 /* If tls_sec is NULL, we should have signalled an error already. */
3213 if (elf_hash_table (info)->tls_sec == NULL)
3215 return elf_hash_table (info)->tls_sec->vma;
3218 /* Return the relocation value for R_PARISC_TLS_TPOFF*.. */
3221 tpoff (struct bfd_link_info *info, bfd_vma address)
3223 struct elf_link_hash_table *htab = elf_hash_table (info);
3225 /* If tls_sec is NULL, we should have signalled an error already. */
3226 if (htab->tls_sec == NULL)
3228 /* hppa TLS ABI is variant I and static TLS block start just after
3229 tcbhead structure which has 2 pointer fields. */
3230 return (address - htab->tls_sec->vma
3231 + align_power ((bfd_vma) 8, htab->tls_sec->alignment_power));
3234 /* Perform a final link. */
3237 elf32_hppa_final_link (bfd *abfd, struct bfd_link_info *info)
3241 /* Invoke the regular ELF linker to do all the work. */
3242 if (!bfd_elf_final_link (abfd, info))
3245 /* If we're producing a final executable, sort the contents of the
3247 if (bfd_link_relocatable (info))
3250 /* Do not attempt to sort non-regular files. This is here
3251 especially for configure scripts and kernel builds which run
3252 tests with "ld [...] -o /dev/null". */
3253 if (stat (abfd->filename, &buf) != 0
3254 || !S_ISREG(buf.st_mode))
3257 return elf_hppa_sort_unwind (abfd);
3260 /* Record the lowest address for the data and text segments. */
3263 hppa_record_segment_addr (bfd *abfd, asection *section, void *data)
3265 struct elf32_hppa_link_hash_table *htab;
3267 htab = (struct elf32_hppa_link_hash_table*) data;
3271 if ((section->flags & (SEC_ALLOC | SEC_LOAD)) == (SEC_ALLOC | SEC_LOAD))
3274 Elf_Internal_Phdr *p;
3276 p = _bfd_elf_find_segment_containing_section (abfd, section->output_section);
3277 BFD_ASSERT (p != NULL);
3280 if ((section->flags & SEC_READONLY) != 0)
3282 if (value < htab->text_segment_base)
3283 htab->text_segment_base = value;
3287 if (value < htab->data_segment_base)
3288 htab->data_segment_base = value;
3293 /* Perform a relocation as part of a final link. */
3295 static bfd_reloc_status_type
3296 final_link_relocate (asection *input_section,
3298 const Elf_Internal_Rela *rela,
3300 struct elf32_hppa_link_hash_table *htab,
3302 struct elf32_hppa_link_hash_entry *hh,
3303 struct bfd_link_info *info)
3306 unsigned int r_type = ELF32_R_TYPE (rela->r_info);
3307 unsigned int orig_r_type = r_type;
3308 reloc_howto_type *howto = elf_hppa_howto_table + r_type;
3309 int r_format = howto->bitsize;
3310 enum hppa_reloc_field_selector_type_alt r_field;
3311 bfd *input_bfd = input_section->owner;
3312 bfd_vma offset = rela->r_offset;
3313 bfd_vma max_branch_offset = 0;
3314 bfd_byte *hit_data = contents + offset;
3315 bfd_signed_vma addend = rela->r_addend;
3317 struct elf32_hppa_stub_hash_entry *hsh = NULL;
3320 if (r_type == R_PARISC_NONE)
3321 return bfd_reloc_ok;
3323 insn = bfd_get_32 (input_bfd, hit_data);
3325 /* Find out where we are and where we're going. */
3326 location = (offset +
3327 input_section->output_offset +
3328 input_section->output_section->vma);
3330 /* If we are not building a shared library, convert DLTIND relocs to
3332 if (!bfd_link_pic (info))
3336 case R_PARISC_DLTIND21L:
3337 case R_PARISC_TLS_GD21L:
3338 case R_PARISC_TLS_LDM21L:
3339 case R_PARISC_TLS_IE21L:
3340 r_type = R_PARISC_DPREL21L;
3343 case R_PARISC_DLTIND14R:
3344 case R_PARISC_TLS_GD14R:
3345 case R_PARISC_TLS_LDM14R:
3346 case R_PARISC_TLS_IE14R:
3347 r_type = R_PARISC_DPREL14R;
3350 case R_PARISC_DLTIND14F:
3351 r_type = R_PARISC_DPREL14F;
3358 case R_PARISC_PCREL12F:
3359 case R_PARISC_PCREL17F:
3360 case R_PARISC_PCREL22F:
3361 /* If this call should go via the plt, find the import stub in
3364 || sym_sec->output_section == NULL
3366 && hh->eh.plt.offset != (bfd_vma) -1
3367 && hh->eh.dynindx != -1
3369 && (bfd_link_pic (info)
3370 || !hh->eh.def_regular
3371 || hh->eh.root.type == bfd_link_hash_defweak)))
3373 hsh = hppa_get_stub_entry (input_section, sym_sec,
3377 value = (hsh->stub_offset
3378 + hsh->stub_sec->output_offset
3379 + hsh->stub_sec->output_section->vma);
3382 else if (sym_sec == NULL && hh != NULL
3383 && hh->eh.root.type == bfd_link_hash_undefweak)
3385 /* It's OK if undefined weak. Calls to undefined weak
3386 symbols behave as if the "called" function
3387 immediately returns. We can thus call to a weak
3388 function without first checking whether the function
3394 return bfd_reloc_undefined;
3398 case R_PARISC_PCREL21L:
3399 case R_PARISC_PCREL17C:
3400 case R_PARISC_PCREL17R:
3401 case R_PARISC_PCREL14R:
3402 case R_PARISC_PCREL14F:
3403 case R_PARISC_PCREL32:
3404 /* Make it a pc relative offset. */
3409 case R_PARISC_DPREL21L:
3410 case R_PARISC_DPREL14R:
3411 case R_PARISC_DPREL14F:
3412 /* Convert instructions that use the linkage table pointer (r19) to
3413 instructions that use the global data pointer (dp). This is the
3414 most efficient way of using PIC code in an incomplete executable,
3415 but the user must follow the standard runtime conventions for
3416 accessing data for this to work. */
3417 if (orig_r_type != r_type)
3419 if (r_type == R_PARISC_DPREL21L)
3421 /* GCC sometimes uses a register other than r19 for the
3422 operation, so we must convert any addil instruction
3423 that uses this relocation. */
3424 if ((insn & 0xfc000000) == ((int) OP_ADDIL << 26))
3427 /* We must have a ldil instruction. It's too hard to find
3428 and convert the associated add instruction, so issue an
3431 /* xgettext:c-format */
3432 (_("%B(%A+%#Lx): %s fixup for insn %#x is not supported in a non-shared link"),
3439 else if (r_type == R_PARISC_DPREL14F)
3441 /* This must be a format 1 load/store. Change the base
3443 insn = (insn & 0xfc1ffff) | (27 << 21);
3447 /* For all the DP relative relocations, we need to examine the symbol's
3448 section. If it has no section or if it's a code section, then
3449 "data pointer relative" makes no sense. In that case we don't
3450 adjust the "value", and for 21 bit addil instructions, we change the
3451 source addend register from %dp to %r0. This situation commonly
3452 arises for undefined weak symbols and when a variable's "constness"
3453 is declared differently from the way the variable is defined. For
3454 instance: "extern int foo" with foo defined as "const int foo". */
3455 if (sym_sec == NULL || (sym_sec->flags & SEC_CODE) != 0)
3457 if ((insn & ((0x3f << 26) | (0x1f << 21)))
3458 == (((int) OP_ADDIL << 26) | (27 << 21)))
3460 insn &= ~ (0x1f << 21);
3462 /* Now try to make things easy for the dynamic linker. */
3468 case R_PARISC_DLTIND21L:
3469 case R_PARISC_DLTIND14R:
3470 case R_PARISC_DLTIND14F:
3471 case R_PARISC_TLS_GD21L:
3472 case R_PARISC_TLS_LDM21L:
3473 case R_PARISC_TLS_IE21L:
3474 case R_PARISC_TLS_GD14R:
3475 case R_PARISC_TLS_LDM14R:
3476 case R_PARISC_TLS_IE14R:
3477 value -= elf_gp (input_section->output_section->owner);
3480 case R_PARISC_SEGREL32:
3481 if ((sym_sec->flags & SEC_CODE) != 0)
3482 value -= htab->text_segment_base;
3484 value -= htab->data_segment_base;
3493 case R_PARISC_DIR32:
3494 case R_PARISC_DIR14F:
3495 case R_PARISC_DIR17F:
3496 case R_PARISC_PCREL17C:
3497 case R_PARISC_PCREL14F:
3498 case R_PARISC_PCREL32:
3499 case R_PARISC_DPREL14F:
3500 case R_PARISC_PLABEL32:
3501 case R_PARISC_DLTIND14F:
3502 case R_PARISC_SEGBASE:
3503 case R_PARISC_SEGREL32:
3504 case R_PARISC_TLS_DTPMOD32:
3505 case R_PARISC_TLS_DTPOFF32:
3506 case R_PARISC_TLS_TPREL32:
3510 case R_PARISC_DLTIND21L:
3511 case R_PARISC_PCREL21L:
3512 case R_PARISC_PLABEL21L:
3516 case R_PARISC_DIR21L:
3517 case R_PARISC_DPREL21L:
3518 case R_PARISC_TLS_GD21L:
3519 case R_PARISC_TLS_LDM21L:
3520 case R_PARISC_TLS_LDO21L:
3521 case R_PARISC_TLS_IE21L:
3522 case R_PARISC_TLS_LE21L:
3526 case R_PARISC_PCREL17R:
3527 case R_PARISC_PCREL14R:
3528 case R_PARISC_PLABEL14R:
3529 case R_PARISC_DLTIND14R:
3533 case R_PARISC_DIR17R:
3534 case R_PARISC_DIR14R:
3535 case R_PARISC_DPREL14R:
3536 case R_PARISC_TLS_GD14R:
3537 case R_PARISC_TLS_LDM14R:
3538 case R_PARISC_TLS_LDO14R:
3539 case R_PARISC_TLS_IE14R:
3540 case R_PARISC_TLS_LE14R:
3544 case R_PARISC_PCREL12F:
3545 case R_PARISC_PCREL17F:
3546 case R_PARISC_PCREL22F:
3549 if (r_type == (unsigned int) R_PARISC_PCREL17F)
3551 max_branch_offset = (1 << (17-1)) << 2;
3553 else if (r_type == (unsigned int) R_PARISC_PCREL12F)
3555 max_branch_offset = (1 << (12-1)) << 2;
3559 max_branch_offset = (1 << (22-1)) << 2;
3562 /* sym_sec is NULL on undefined weak syms or when shared on
3563 undefined syms. We've already checked for a stub for the
3564 shared undefined case. */
3565 if (sym_sec == NULL)
3568 /* If the branch is out of reach, then redirect the
3569 call to the local stub for this function. */
3570 if (value + addend + max_branch_offset >= 2*max_branch_offset)
3572 hsh = hppa_get_stub_entry (input_section, sym_sec,
3575 return bfd_reloc_undefined;
3577 /* Munge up the value and addend so that we call the stub
3578 rather than the procedure directly. */
3579 value = (hsh->stub_offset
3580 + hsh->stub_sec->output_offset
3581 + hsh->stub_sec->output_section->vma
3587 /* Something we don't know how to handle. */
3589 return bfd_reloc_notsupported;
3592 /* Make sure we can reach the stub. */
3593 if (max_branch_offset != 0
3594 && value + addend + max_branch_offset >= 2*max_branch_offset)
3597 /* xgettext:c-format */
3598 (_("%B(%A+%#Lx): cannot reach %s, recompile with -ffunction-sections"),
3602 hsh->bh_root.string);
3603 bfd_set_error (bfd_error_bad_value);
3604 return bfd_reloc_notsupported;
3607 val = hppa_field_adjust (value, addend, r_field);
3611 case R_PARISC_PCREL12F:
3612 case R_PARISC_PCREL17C:
3613 case R_PARISC_PCREL17F:
3614 case R_PARISC_PCREL17R:
3615 case R_PARISC_PCREL22F:
3616 case R_PARISC_DIR17F:
3617 case R_PARISC_DIR17R:
3618 /* This is a branch. Divide the offset by four.
3619 Note that we need to decide whether it's a branch or
3620 otherwise by inspecting the reloc. Inspecting insn won't
3621 work as insn might be from a .word directive. */
3629 insn = hppa_rebuild_insn (insn, val, r_format);
3631 /* Update the instruction word. */
3632 bfd_put_32 (input_bfd, (bfd_vma) insn, hit_data);
3633 return bfd_reloc_ok;
3636 /* Relocate an HPPA ELF section. */
3639 elf32_hppa_relocate_section (bfd *output_bfd,
3640 struct bfd_link_info *info,
3642 asection *input_section,
3644 Elf_Internal_Rela *relocs,
3645 Elf_Internal_Sym *local_syms,
3646 asection **local_sections)
3648 bfd_vma *local_got_offsets;
3649 struct elf32_hppa_link_hash_table *htab;
3650 Elf_Internal_Shdr *symtab_hdr;
3651 Elf_Internal_Rela *rela;
3652 Elf_Internal_Rela *relend;
3654 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
3656 htab = hppa_link_hash_table (info);
3660 local_got_offsets = elf_local_got_offsets (input_bfd);
3663 relend = relocs + input_section->reloc_count;
3664 for (; rela < relend; rela++)
3666 unsigned int r_type;
3667 reloc_howto_type *howto;
3668 unsigned int r_symndx;
3669 struct elf32_hppa_link_hash_entry *hh;
3670 Elf_Internal_Sym *sym;
3673 bfd_reloc_status_type rstatus;
3674 const char *sym_name;
3676 bfd_boolean warned_undef;
3677 bfd_boolean resolved_to_zero;
3679 r_type = ELF32_R_TYPE (rela->r_info);
3680 if (r_type >= (unsigned int) R_PARISC_UNIMPLEMENTED)
3682 bfd_set_error (bfd_error_bad_value);
3685 if (r_type == (unsigned int) R_PARISC_GNU_VTENTRY
3686 || r_type == (unsigned int) R_PARISC_GNU_VTINHERIT)
3689 r_symndx = ELF32_R_SYM (rela->r_info);
3693 warned_undef = FALSE;
3694 if (r_symndx < symtab_hdr->sh_info)
3696 /* This is a local symbol, h defaults to NULL. */
3697 sym = local_syms + r_symndx;
3698 sym_sec = local_sections[r_symndx];
3699 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sym_sec, rela);
3703 struct elf_link_hash_entry *eh;
3704 bfd_boolean unresolved_reloc, ignored;
3705 struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (input_bfd);
3707 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rela,
3708 r_symndx, symtab_hdr, sym_hashes,
3709 eh, sym_sec, relocation,
3710 unresolved_reloc, warned_undef,
3713 if (!bfd_link_relocatable (info)
3715 && eh->root.type != bfd_link_hash_defined
3716 && eh->root.type != bfd_link_hash_defweak
3717 && eh->root.type != bfd_link_hash_undefweak)
3719 if (info->unresolved_syms_in_objects == RM_IGNORE
3720 && ELF_ST_VISIBILITY (eh->other) == STV_DEFAULT
3721 && eh->type == STT_PARISC_MILLI)
3723 (*info->callbacks->undefined_symbol)
3724 (info, eh_name (eh), input_bfd,
3725 input_section, rela->r_offset, FALSE);
3726 warned_undef = TRUE;
3729 hh = hppa_elf_hash_entry (eh);
3732 if (sym_sec != NULL && discarded_section (sym_sec))
3733 RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section,
3735 elf_hppa_howto_table + r_type, 0,
3738 if (bfd_link_relocatable (info))
3741 resolved_to_zero = (hh != NULL
3742 && UNDEFWEAK_NO_DYNAMIC_RELOC (info, &hh->eh));
3744 /* Do any required modifications to the relocation value, and
3745 determine what types of dynamic info we need to output, if
3750 case R_PARISC_DLTIND14F:
3751 case R_PARISC_DLTIND14R:
3752 case R_PARISC_DLTIND21L:
3755 bfd_boolean do_got = 0;
3757 /* Relocation is to the entry for this symbol in the
3758 global offset table. */
3763 off = hh->eh.got.offset;
3764 dyn = htab->etab.dynamic_sections_created;
3765 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn,
3766 bfd_link_pic (info),
3769 /* If we aren't going to call finish_dynamic_symbol,
3770 then we need to handle initialisation of the .got
3771 entry and create needed relocs here. Since the
3772 offset must always be a multiple of 4, we use the
3773 least significant bit to record whether we have
3774 initialised it already. */
3779 hh->eh.got.offset |= 1;
3786 /* Local symbol case. */
3787 if (local_got_offsets == NULL)
3790 off = local_got_offsets[r_symndx];
3792 /* The offset must always be a multiple of 4. We use
3793 the least significant bit to record whether we have
3794 already generated the necessary reloc. */
3799 local_got_offsets[r_symndx] |= 1;
3806 if (bfd_link_pic (info))
3808 /* Output a dynamic relocation for this GOT entry.
3809 In this case it is relative to the base of the
3810 object because the symbol index is zero. */
3811 Elf_Internal_Rela outrel;
3813 asection *sec = htab->etab.srelgot;
3815 outrel.r_offset = (off
3816 + htab->etab.sgot->output_offset
3817 + htab->etab.sgot->output_section->vma);
3818 outrel.r_info = ELF32_R_INFO (0, R_PARISC_DIR32);
3819 outrel.r_addend = relocation;
3820 loc = sec->contents;
3821 loc += sec->reloc_count++ * sizeof (Elf32_External_Rela);
3822 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
3825 bfd_put_32 (output_bfd, relocation,
3826 htab->etab.sgot->contents + off);
3829 if (off >= (bfd_vma) -2)
3832 /* Add the base of the GOT to the relocation value. */
3834 + htab->etab.sgot->output_offset
3835 + htab->etab.sgot->output_section->vma);
3839 case R_PARISC_SEGREL32:
3840 /* If this is the first SEGREL relocation, then initialize
3841 the segment base values. */
3842 if (htab->text_segment_base == (bfd_vma) -1)
3843 bfd_map_over_sections (output_bfd, hppa_record_segment_addr, htab);
3846 case R_PARISC_PLABEL14R:
3847 case R_PARISC_PLABEL21L:
3848 case R_PARISC_PLABEL32:
3849 if (htab->etab.dynamic_sections_created)
3852 bfd_boolean do_plt = 0;
3853 /* If we have a global symbol with a PLT slot, then
3854 redirect this relocation to it. */
3857 off = hh->eh.plt.offset;
3858 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (1,
3859 bfd_link_pic (info),
3862 /* In a non-shared link, adjust_dynamic_symbols
3863 isn't called for symbols forced local. We
3864 need to write out the plt entry here. */
3869 hh->eh.plt.offset |= 1;
3876 bfd_vma *local_plt_offsets;
3878 if (local_got_offsets == NULL)
3881 local_plt_offsets = local_got_offsets + symtab_hdr->sh_info;
3882 off = local_plt_offsets[r_symndx];
3884 /* As for the local .got entry case, we use the last
3885 bit to record whether we've already initialised
3886 this local .plt entry. */
3891 local_plt_offsets[r_symndx] |= 1;
3898 if (bfd_link_pic (info))
3900 /* Output a dynamic IPLT relocation for this
3902 Elf_Internal_Rela outrel;
3904 asection *s = htab->etab.srelplt;
3906 outrel.r_offset = (off
3907 + htab->etab.splt->output_offset
3908 + htab->etab.splt->output_section->vma);
3909 outrel.r_info = ELF32_R_INFO (0, R_PARISC_IPLT);
3910 outrel.r_addend = relocation;
3912 loc += s->reloc_count++ * sizeof (Elf32_External_Rela);
3913 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
3917 bfd_put_32 (output_bfd,
3919 htab->etab.splt->contents + off);
3920 bfd_put_32 (output_bfd,
3921 elf_gp (htab->etab.splt->output_section->owner),
3922 htab->etab.splt->contents + off + 4);
3926 if (off >= (bfd_vma) -2)
3929 /* PLABELs contain function pointers. Relocation is to
3930 the entry for the function in the .plt. The magic +2
3931 offset signals to $$dyncall that the function pointer
3932 is in the .plt and thus has a gp pointer too.
3933 Exception: Undefined PLABELs should have a value of
3936 || (hh->eh.root.type != bfd_link_hash_undefweak
3937 && hh->eh.root.type != bfd_link_hash_undefined))
3940 + htab->etab.splt->output_offset
3941 + htab->etab.splt->output_section->vma
3948 case R_PARISC_DIR17F:
3949 case R_PARISC_DIR17R:
3950 case R_PARISC_DIR14F:
3951 case R_PARISC_DIR14R:
3952 case R_PARISC_DIR21L:
3953 case R_PARISC_DPREL14F:
3954 case R_PARISC_DPREL14R:
3955 case R_PARISC_DPREL21L:
3956 case R_PARISC_DIR32:
3957 if ((input_section->flags & SEC_ALLOC) == 0)
3960 /* The reloc types handled here and this conditional
3961 expression must match the code in ..check_relocs and
3962 allocate_dynrelocs. ie. We need exactly the same condition
3963 as in ..check_relocs, with some extra conditions (dynindx
3964 test in this case) to cater for relocs removed by
3965 allocate_dynrelocs. If you squint, the non-shared test
3966 here does indeed match the one in ..check_relocs, the
3967 difference being that here we test DEF_DYNAMIC as well as
3968 !DEF_REGULAR. All common syms end up with !DEF_REGULAR,
3969 which is why we can't use just that test here.
3970 Conversely, DEF_DYNAMIC can't be used in check_relocs as
3971 there all files have not been loaded. */
3972 if ((bfd_link_pic (info)
3974 || (ELF_ST_VISIBILITY (hh->eh.other) == STV_DEFAULT
3975 && !resolved_to_zero)
3976 || hh->eh.root.type != bfd_link_hash_undefweak)
3977 && (IS_ABSOLUTE_RELOC (r_type)
3978 || !SYMBOL_CALLS_LOCAL (info, &hh->eh)))
3979 || (!bfd_link_pic (info)
3981 && hh->eh.dynindx != -1
3982 && !hh->eh.non_got_ref
3983 && ((ELIMINATE_COPY_RELOCS
3984 && hh->eh.def_dynamic
3985 && !hh->eh.def_regular)
3986 || hh->eh.root.type == bfd_link_hash_undefweak
3987 || hh->eh.root.type == bfd_link_hash_undefined)))
3989 Elf_Internal_Rela outrel;
3994 /* When generating a shared object, these relocations
3995 are copied into the output file to be resolved at run
3998 outrel.r_addend = rela->r_addend;
4000 _bfd_elf_section_offset (output_bfd, info, input_section,
4002 skip = (outrel.r_offset == (bfd_vma) -1
4003 || outrel.r_offset == (bfd_vma) -2);
4004 outrel.r_offset += (input_section->output_offset
4005 + input_section->output_section->vma);
4009 memset (&outrel, 0, sizeof (outrel));
4012 && hh->eh.dynindx != -1
4014 || !IS_ABSOLUTE_RELOC (r_type)
4015 || !bfd_link_pic (info)
4016 || !SYMBOLIC_BIND (info, &hh->eh)
4017 || !hh->eh.def_regular))
4019 outrel.r_info = ELF32_R_INFO (hh->eh.dynindx, r_type);
4021 else /* It's a local symbol, or one marked to become local. */
4025 /* Add the absolute offset of the symbol. */
4026 outrel.r_addend += relocation;
4028 /* Global plabels need to be processed by the
4029 dynamic linker so that functions have at most one
4030 fptr. For this reason, we need to differentiate
4031 between global and local plabels, which we do by
4032 providing the function symbol for a global plabel
4033 reloc, and no symbol for local plabels. */
4036 && sym_sec->output_section != NULL
4037 && ! bfd_is_abs_section (sym_sec))
4041 osec = sym_sec->output_section;
4042 indx = elf_section_data (osec)->dynindx;
4045 osec = htab->etab.text_index_section;
4046 indx = elf_section_data (osec)->dynindx;
4048 BFD_ASSERT (indx != 0);
4050 /* We are turning this relocation into one
4051 against a section symbol, so subtract out the
4052 output section's address but not the offset
4053 of the input section in the output section. */
4054 outrel.r_addend -= osec->vma;
4057 outrel.r_info = ELF32_R_INFO (indx, r_type);
4059 sreloc = elf_section_data (input_section)->sreloc;
4063 loc = sreloc->contents;
4064 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela);
4065 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
4069 case R_PARISC_TLS_LDM21L:
4070 case R_PARISC_TLS_LDM14R:
4074 off = htab->tls_ldm_got.offset;
4079 Elf_Internal_Rela outrel;
4082 outrel.r_offset = (off
4083 + htab->etab.sgot->output_section->vma
4084 + htab->etab.sgot->output_offset);
4085 outrel.r_addend = 0;
4086 outrel.r_info = ELF32_R_INFO (0, R_PARISC_TLS_DTPMOD32);
4087 loc = htab->etab.srelgot->contents;
4088 loc += htab->etab.srelgot->reloc_count++ * sizeof (Elf32_External_Rela);
4090 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
4091 htab->tls_ldm_got.offset |= 1;
4094 /* Add the base of the GOT to the relocation value. */
4096 + htab->etab.sgot->output_offset
4097 + htab->etab.sgot->output_section->vma);
4102 case R_PARISC_TLS_LDO21L:
4103 case R_PARISC_TLS_LDO14R:
4104 relocation -= dtpoff_base (info);
4107 case R_PARISC_TLS_GD21L:
4108 case R_PARISC_TLS_GD14R:
4109 case R_PARISC_TLS_IE21L:
4110 case R_PARISC_TLS_IE14R:
4120 dyn = htab->etab.dynamic_sections_created;
4122 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn,
4123 bfd_link_pic (info),
4125 && (!bfd_link_pic (info)
4126 || !SYMBOL_REFERENCES_LOCAL (info, &hh->eh)))
4128 indx = hh->eh.dynindx;
4130 off = hh->eh.got.offset;
4131 tls_type = hh->tls_type;
4135 off = local_got_offsets[r_symndx];
4136 tls_type = hppa_elf_local_got_tls_type (input_bfd)[r_symndx];
4139 if (tls_type == GOT_UNKNOWN)
4146 bfd_boolean need_relocs = FALSE;
4147 Elf_Internal_Rela outrel;
4148 bfd_byte *loc = NULL;
4151 /* The GOT entries have not been initialized yet. Do it
4152 now, and emit any relocations. If both an IE GOT and a
4153 GD GOT are necessary, we emit the GD first. */
4155 if ((bfd_link_pic (info) || indx != 0)
4157 || ELF_ST_VISIBILITY (hh->eh.other) == STV_DEFAULT
4158 || hh->eh.root.type != bfd_link_hash_undefweak))
4161 loc = htab->etab.srelgot->contents;
4162 /* FIXME (CAO): Should this be reloc_count++ ? */
4163 loc += htab->etab.srelgot->reloc_count * sizeof (Elf32_External_Rela);
4166 if (tls_type & GOT_TLS_GD)
4170 outrel.r_offset = (cur_off
4171 + htab->etab.sgot->output_section->vma
4172 + htab->etab.sgot->output_offset);
4173 outrel.r_info = ELF32_R_INFO (indx,R_PARISC_TLS_DTPMOD32);
4174 outrel.r_addend = 0;
4175 bfd_put_32 (output_bfd, 0, htab->etab.sgot->contents + cur_off);
4176 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
4177 htab->etab.srelgot->reloc_count++;
4178 loc += sizeof (Elf32_External_Rela);
4181 bfd_put_32 (output_bfd, relocation - dtpoff_base (info),
4182 htab->etab.sgot->contents + cur_off + 4);
4185 bfd_put_32 (output_bfd, 0,
4186 htab->etab.sgot->contents + cur_off + 4);
4187 outrel.r_info = ELF32_R_INFO (indx, R_PARISC_TLS_DTPOFF32);
4188 outrel.r_offset += 4;
4189 bfd_elf32_swap_reloca_out (output_bfd, &outrel,loc);
4190 htab->etab.srelgot->reloc_count++;
4191 loc += sizeof (Elf32_External_Rela);
4196 /* If we are not emitting relocations for a
4197 general dynamic reference, then we must be in a
4198 static link or an executable link with the
4199 symbol binding locally. Mark it as belonging
4200 to module 1, the executable. */
4201 bfd_put_32 (output_bfd, 1,
4202 htab->etab.sgot->contents + cur_off);
4203 bfd_put_32 (output_bfd, relocation - dtpoff_base (info),
4204 htab->etab.sgot->contents + cur_off + 4);
4211 if (tls_type & GOT_TLS_IE)
4215 outrel.r_offset = (cur_off
4216 + htab->etab.sgot->output_section->vma
4217 + htab->etab.sgot->output_offset);
4218 outrel.r_info = ELF32_R_INFO (indx, R_PARISC_TLS_TPREL32);
4221 outrel.r_addend = relocation - dtpoff_base (info);
4223 outrel.r_addend = 0;
4225 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
4226 htab->etab.srelgot->reloc_count++;
4227 loc += sizeof (Elf32_External_Rela);
4230 bfd_put_32 (output_bfd, tpoff (info, relocation),
4231 htab->etab.sgot->contents + cur_off);
4237 hh->eh.got.offset |= 1;
4239 local_got_offsets[r_symndx] |= 1;
4242 if ((tls_type & GOT_TLS_GD)
4243 && r_type != R_PARISC_TLS_GD21L
4244 && r_type != R_PARISC_TLS_GD14R)
4245 off += 2 * GOT_ENTRY_SIZE;
4247 /* Add the base of the GOT to the relocation value. */
4249 + htab->etab.sgot->output_offset
4250 + htab->etab.sgot->output_section->vma);
4255 case R_PARISC_TLS_LE21L:
4256 case R_PARISC_TLS_LE14R:
4258 relocation = tpoff (info, relocation);
4267 rstatus = final_link_relocate (input_section, contents, rela, relocation,
4268 htab, sym_sec, hh, info);
4270 if (rstatus == bfd_reloc_ok)
4274 sym_name = hh_name (hh);
4277 sym_name = bfd_elf_string_from_elf_section (input_bfd,
4278 symtab_hdr->sh_link,
4280 if (sym_name == NULL)
4282 if (*sym_name == '\0')
4283 sym_name = bfd_section_name (input_bfd, sym_sec);
4286 howto = elf_hppa_howto_table + r_type;
4288 if (rstatus == bfd_reloc_undefined || rstatus == bfd_reloc_notsupported)
4290 if (rstatus == bfd_reloc_notsupported || !warned_undef)
4293 /* xgettext:c-format */
4294 (_("%B(%A+%#Lx): cannot handle %s for %s"),
4300 bfd_set_error (bfd_error_bad_value);
4305 (*info->callbacks->reloc_overflow)
4306 (info, (hh ? &hh->eh.root : NULL), sym_name, howto->name,
4307 (bfd_vma) 0, input_bfd, input_section, rela->r_offset);
4313 /* Finish up dynamic symbol handling. We set the contents of various
4314 dynamic sections here. */
4317 elf32_hppa_finish_dynamic_symbol (bfd *output_bfd,
4318 struct bfd_link_info *info,
4319 struct elf_link_hash_entry *eh,
4320 Elf_Internal_Sym *sym)
4322 struct elf32_hppa_link_hash_table *htab;
4323 Elf_Internal_Rela rela;
4326 htab = hppa_link_hash_table (info);
4330 if (eh->plt.offset != (bfd_vma) -1)
4334 if (eh->plt.offset & 1)
4337 /* This symbol has an entry in the procedure linkage table. Set
4340 The format of a plt entry is
4345 if (eh->root.type == bfd_link_hash_defined
4346 || eh->root.type == bfd_link_hash_defweak)
4348 value = eh->root.u.def.value;
4349 if (eh->root.u.def.section->output_section != NULL)
4350 value += (eh->root.u.def.section->output_offset
4351 + eh->root.u.def.section->output_section->vma);
4354 /* Create a dynamic IPLT relocation for this entry. */
4355 rela.r_offset = (eh->plt.offset
4356 + htab->etab.splt->output_offset
4357 + htab->etab.splt->output_section->vma);
4358 if (eh->dynindx != -1)
4360 rela.r_info = ELF32_R_INFO (eh->dynindx, R_PARISC_IPLT);
4365 /* This symbol has been marked to become local, and is
4366 used by a plabel so must be kept in the .plt. */
4367 rela.r_info = ELF32_R_INFO (0, R_PARISC_IPLT);
4368 rela.r_addend = value;
4371 loc = htab->etab.srelplt->contents;
4372 loc += htab->etab.srelplt->reloc_count++ * sizeof (Elf32_External_Rela);
4373 bfd_elf32_swap_reloca_out (htab->etab.splt->output_section->owner, &rela, loc);
4375 if (!eh->def_regular)
4377 /* Mark the symbol as undefined, rather than as defined in
4378 the .plt section. Leave the value alone. */
4379 sym->st_shndx = SHN_UNDEF;
4383 if (eh->got.offset != (bfd_vma) -1
4384 && (hppa_elf_hash_entry (eh)->tls_type & GOT_TLS_GD) == 0
4385 && (hppa_elf_hash_entry (eh)->tls_type & GOT_TLS_IE) == 0)
4387 /* This symbol has an entry in the global offset table. Set it
4390 rela.r_offset = ((eh->got.offset &~ (bfd_vma) 1)
4391 + htab->etab.sgot->output_offset
4392 + htab->etab.sgot->output_section->vma);
4394 /* If this is a -Bsymbolic link and the symbol is defined
4395 locally or was forced to be local because of a version file,
4396 we just want to emit a RELATIVE reloc. The entry in the
4397 global offset table will already have been initialized in the
4398 relocate_section function. */
4399 if (bfd_link_pic (info)
4400 && (SYMBOLIC_BIND (info, eh) || eh->dynindx == -1)
4403 rela.r_info = ELF32_R_INFO (0, R_PARISC_DIR32);
4404 rela.r_addend = (eh->root.u.def.value
4405 + eh->root.u.def.section->output_offset
4406 + eh->root.u.def.section->output_section->vma);
4410 if ((eh->got.offset & 1) != 0)
4413 bfd_put_32 (output_bfd, 0, htab->etab.sgot->contents + (eh->got.offset & ~1));
4414 rela.r_info = ELF32_R_INFO (eh->dynindx, R_PARISC_DIR32);
4418 loc = htab->etab.srelgot->contents;
4419 loc += htab->etab.srelgot->reloc_count++ * sizeof (Elf32_External_Rela);
4420 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
4427 /* This symbol needs a copy reloc. Set it up. */
4429 if (! (eh->dynindx != -1
4430 && (eh->root.type == bfd_link_hash_defined
4431 || eh->root.type == bfd_link_hash_defweak)))
4434 rela.r_offset = (eh->root.u.def.value
4435 + eh->root.u.def.section->output_offset
4436 + eh->root.u.def.section->output_section->vma);
4438 rela.r_info = ELF32_R_INFO (eh->dynindx, R_PARISC_COPY);
4439 if (eh->root.u.def.section == htab->etab.sdynrelro)
4440 sec = htab->etab.sreldynrelro;
4442 sec = htab->etab.srelbss;
4443 loc = sec->contents + sec->reloc_count++ * sizeof (Elf32_External_Rela);
4444 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
4447 /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. */
4448 if (eh == htab->etab.hdynamic || eh == htab->etab.hgot)
4450 sym->st_shndx = SHN_ABS;
4456 /* Used to decide how to sort relocs in an optimal manner for the
4457 dynamic linker, before writing them out. */
4459 static enum elf_reloc_type_class
4460 elf32_hppa_reloc_type_class (const struct bfd_link_info *info ATTRIBUTE_UNUSED,
4461 const asection *rel_sec ATTRIBUTE_UNUSED,
4462 const Elf_Internal_Rela *rela)
4464 /* Handle TLS relocs first; we don't want them to be marked
4465 relative by the "if (ELF32_R_SYM (rela->r_info) == STN_UNDEF)"
4467 switch ((int) ELF32_R_TYPE (rela->r_info))
4469 case R_PARISC_TLS_DTPMOD32:
4470 case R_PARISC_TLS_DTPOFF32:
4471 case R_PARISC_TLS_TPREL32:
4472 return reloc_class_normal;
4475 if (ELF32_R_SYM (rela->r_info) == STN_UNDEF)
4476 return reloc_class_relative;
4478 switch ((int) ELF32_R_TYPE (rela->r_info))
4481 return reloc_class_plt;
4483 return reloc_class_copy;
4485 return reloc_class_normal;
4489 /* Finish up the dynamic sections. */
4492 elf32_hppa_finish_dynamic_sections (bfd *output_bfd,
4493 struct bfd_link_info *info)
4496 struct elf32_hppa_link_hash_table *htab;
4500 htab = hppa_link_hash_table (info);
4504 dynobj = htab->etab.dynobj;
4506 sgot = htab->etab.sgot;
4507 /* A broken linker script might have discarded the dynamic sections.
4508 Catch this here so that we do not seg-fault later on. */
4509 if (sgot != NULL && bfd_is_abs_section (sgot->output_section))
4512 sdyn = bfd_get_linker_section (dynobj, ".dynamic");
4514 if (htab->etab.dynamic_sections_created)
4516 Elf32_External_Dyn *dyncon, *dynconend;
4521 dyncon = (Elf32_External_Dyn *) sdyn->contents;
4522 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
4523 for (; dyncon < dynconend; dyncon++)
4525 Elf_Internal_Dyn dyn;
4528 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
4536 /* Use PLTGOT to set the GOT register. */
4537 dyn.d_un.d_ptr = elf_gp (output_bfd);
4541 s = htab->etab.srelplt;
4542 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
4546 s = htab->etab.srelplt;
4547 dyn.d_un.d_val = s->size;
4551 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
4555 if (sgot != NULL && sgot->size != 0)
4557 /* Fill in the first entry in the global offset table.
4558 We use it to point to our dynamic section, if we have one. */
4559 bfd_put_32 (output_bfd,
4560 sdyn ? sdyn->output_section->vma + sdyn->output_offset : 0,
4563 /* The second entry is reserved for use by the dynamic linker. */
4564 memset (sgot->contents + GOT_ENTRY_SIZE, 0, GOT_ENTRY_SIZE);
4566 /* Set .got entry size. */
4567 elf_section_data (sgot->output_section)
4568 ->this_hdr.sh_entsize = GOT_ENTRY_SIZE;
4571 if (htab->etab.splt != NULL && htab->etab.splt->size != 0)
4573 /* Set plt entry size to 0 instead of PLT_ENTRY_SIZE, since we add the
4574 plt stubs and as such the section does not hold a table of fixed-size
4576 elf_section_data (htab->etab.splt->output_section)->this_hdr.sh_entsize = 0;
4578 if (htab->need_plt_stub)
4580 /* Set up the .plt stub. */
4581 memcpy (htab->etab.splt->contents
4582 + htab->etab.splt->size - sizeof (plt_stub),
4583 plt_stub, sizeof (plt_stub));
4585 if ((htab->etab.splt->output_offset
4586 + htab->etab.splt->output_section->vma
4587 + htab->etab.splt->size)
4588 != (sgot->output_offset
4589 + sgot->output_section->vma))
4592 (_(".got section not immediately after .plt section"));
4601 /* Called when writing out an object file to decide the type of a
4604 elf32_hppa_elf_get_symbol_type (Elf_Internal_Sym *elf_sym, int type)
4606 if (ELF_ST_TYPE (elf_sym->st_info) == STT_PARISC_MILLI)
4607 return STT_PARISC_MILLI;
4612 /* Misc BFD support code. */
4613 #define bfd_elf32_bfd_is_local_label_name elf_hppa_is_local_label_name
4614 #define bfd_elf32_bfd_reloc_type_lookup elf_hppa_reloc_type_lookup
4615 #define bfd_elf32_bfd_reloc_name_lookup elf_hppa_reloc_name_lookup
4616 #define elf_info_to_howto elf_hppa_info_to_howto
4617 #define elf_info_to_howto_rel elf_hppa_info_to_howto_rel
4619 /* Stuff for the BFD linker. */
4620 #define bfd_elf32_bfd_final_link elf32_hppa_final_link
4621 #define bfd_elf32_bfd_link_hash_table_create elf32_hppa_link_hash_table_create
4622 #define elf_backend_adjust_dynamic_symbol elf32_hppa_adjust_dynamic_symbol
4623 #define elf_backend_copy_indirect_symbol elf32_hppa_copy_indirect_symbol
4624 #define elf_backend_check_relocs elf32_hppa_check_relocs
4625 #define elf_backend_create_dynamic_sections elf32_hppa_create_dynamic_sections
4626 #define elf_backend_fake_sections elf_hppa_fake_sections
4627 #define elf_backend_relocate_section elf32_hppa_relocate_section
4628 #define elf_backend_hide_symbol elf32_hppa_hide_symbol
4629 #define elf_backend_finish_dynamic_symbol elf32_hppa_finish_dynamic_symbol
4630 #define elf_backend_finish_dynamic_sections elf32_hppa_finish_dynamic_sections
4631 #define elf_backend_size_dynamic_sections elf32_hppa_size_dynamic_sections
4632 #define elf_backend_init_index_section _bfd_elf_init_1_index_section
4633 #define elf_backend_gc_mark_hook elf32_hppa_gc_mark_hook
4634 #define elf_backend_gc_sweep_hook elf32_hppa_gc_sweep_hook
4635 #define elf_backend_grok_prstatus elf32_hppa_grok_prstatus
4636 #define elf_backend_grok_psinfo elf32_hppa_grok_psinfo
4637 #define elf_backend_object_p elf32_hppa_object_p
4638 #define elf_backend_final_write_processing elf_hppa_final_write_processing
4639 #define elf_backend_get_symbol_type elf32_hppa_elf_get_symbol_type
4640 #define elf_backend_reloc_type_class elf32_hppa_reloc_type_class
4641 #define elf_backend_action_discarded elf_hppa_action_discarded
4643 #define elf_backend_can_gc_sections 1
4644 #define elf_backend_can_refcount 1
4645 #define elf_backend_plt_alignment 2
4646 #define elf_backend_want_got_plt 0
4647 #define elf_backend_plt_readonly 0
4648 #define elf_backend_want_plt_sym 0
4649 #define elf_backend_got_header_size 8
4650 #define elf_backend_want_dynrelro 1
4651 #define elf_backend_rela_normal 1
4652 #define elf_backend_dtrel_excludes_plt 1
4653 #define elf_backend_no_page_alias 1
4655 #define TARGET_BIG_SYM hppa_elf32_vec
4656 #define TARGET_BIG_NAME "elf32-hppa"
4657 #define ELF_ARCH bfd_arch_hppa
4658 #define ELF_TARGET_ID HPPA32_ELF_DATA
4659 #define ELF_MACHINE_CODE EM_PARISC
4660 #define ELF_MAXPAGESIZE 0x1000
4661 #define ELF_OSABI ELFOSABI_HPUX
4662 #define elf32_bed elf32_hppa_hpux_bed
4664 #include "elf32-target.h"
4666 #undef TARGET_BIG_SYM
4667 #define TARGET_BIG_SYM hppa_elf32_linux_vec
4668 #undef TARGET_BIG_NAME
4669 #define TARGET_BIG_NAME "elf32-hppa-linux"
4671 #define ELF_OSABI ELFOSABI_GNU
4673 #define elf32_bed elf32_hppa_linux_bed
4675 #include "elf32-target.h"
4677 #undef TARGET_BIG_SYM
4678 #define TARGET_BIG_SYM hppa_elf32_nbsd_vec
4679 #undef TARGET_BIG_NAME
4680 #define TARGET_BIG_NAME "elf32-hppa-netbsd"
4682 #define ELF_OSABI ELFOSABI_NETBSD
4684 #define elf32_bed elf32_hppa_netbsd_bed
4686 #include "elf32-target.h"