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 /* Make an undefined weak symbol dynamic. */
1925 ensure_undef_weak_dynamic (struct bfd_link_info *info,
1926 struct elf_link_hash_entry *eh)
1928 if (eh->dynindx == -1
1929 && !eh->forced_local
1930 && eh->type != STT_PARISC_MILLI
1931 && eh->root.type == bfd_link_hash_undefweak
1932 && ELF_ST_VISIBILITY (eh->other) == STV_DEFAULT)
1933 return bfd_elf_link_record_dynamic_symbol (info, eh);
1937 /* Allocate space in the .plt for entries that won't have relocations.
1938 ie. plabel entries. */
1941 allocate_plt_static (struct elf_link_hash_entry *eh, void *inf)
1943 struct bfd_link_info *info;
1944 struct elf32_hppa_link_hash_table *htab;
1945 struct elf32_hppa_link_hash_entry *hh;
1948 if (eh->root.type == bfd_link_hash_indirect)
1951 info = (struct bfd_link_info *) inf;
1952 hh = hppa_elf_hash_entry (eh);
1953 htab = hppa_link_hash_table (info);
1957 if (htab->etab.dynamic_sections_created
1958 && eh->plt.refcount > 0)
1960 if (!ensure_undef_weak_dynamic (info, eh))
1963 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, bfd_link_pic (info), eh))
1965 /* Allocate these later. From this point on, h->plabel
1966 means that the plt entry is only used by a plabel.
1967 We'll be using a normal plt entry for this symbol, so
1968 clear the plabel indicator. */
1972 else if (hh->plabel)
1974 /* Make an entry in the .plt section for plabel references
1975 that won't have a .plt entry for other reasons. */
1976 sec = htab->etab.splt;
1977 eh->plt.offset = sec->size;
1978 sec->size += PLT_ENTRY_SIZE;
1979 if (bfd_link_pic (info))
1980 htab->etab.srelplt->size += sizeof (Elf32_External_Rela);
1984 /* No .plt entry needed. */
1985 eh->plt.offset = (bfd_vma) -1;
1991 eh->plt.offset = (bfd_vma) -1;
1998 /* Allocate space in .plt, .got and associated reloc sections for
2002 allocate_dynrelocs (struct elf_link_hash_entry *eh, void *inf)
2004 struct bfd_link_info *info;
2005 struct elf32_hppa_link_hash_table *htab;
2007 struct elf32_hppa_link_hash_entry *hh;
2008 struct elf32_hppa_dyn_reloc_entry *hdh_p;
2010 if (eh->root.type == bfd_link_hash_indirect)
2014 htab = hppa_link_hash_table (info);
2018 hh = hppa_elf_hash_entry (eh);
2020 if (htab->etab.dynamic_sections_created
2021 && eh->plt.offset != (bfd_vma) -1
2023 && eh->plt.refcount > 0)
2025 /* Make an entry in the .plt section. */
2026 sec = htab->etab.splt;
2027 eh->plt.offset = sec->size;
2028 sec->size += PLT_ENTRY_SIZE;
2030 /* We also need to make an entry in the .rela.plt section. */
2031 htab->etab.srelplt->size += sizeof (Elf32_External_Rela);
2032 htab->need_plt_stub = 1;
2035 if (eh->got.refcount > 0)
2037 if (!ensure_undef_weak_dynamic (info, eh))
2040 sec = htab->etab.sgot;
2041 eh->got.offset = sec->size;
2042 sec->size += GOT_ENTRY_SIZE;
2043 /* R_PARISC_TLS_GD* needs two GOT entries */
2044 if ((hh->tls_type & (GOT_TLS_GD | GOT_TLS_IE)) == (GOT_TLS_GD | GOT_TLS_IE))
2045 sec->size += GOT_ENTRY_SIZE * 2;
2046 else if ((hh->tls_type & GOT_TLS_GD) == GOT_TLS_GD)
2047 sec->size += GOT_ENTRY_SIZE;
2048 if (htab->etab.dynamic_sections_created
2049 && (bfd_link_pic (info)
2050 || (eh->dynindx != -1
2051 && !eh->forced_local)))
2053 htab->etab.srelgot->size += sizeof (Elf32_External_Rela);
2054 if ((hh->tls_type & (GOT_TLS_GD | GOT_TLS_IE)) == (GOT_TLS_GD | GOT_TLS_IE))
2055 htab->etab.srelgot->size += 2 * sizeof (Elf32_External_Rela);
2056 else if ((hh->tls_type & GOT_TLS_GD) == GOT_TLS_GD)
2057 htab->etab.srelgot->size += sizeof (Elf32_External_Rela);
2061 eh->got.offset = (bfd_vma) -1;
2063 if (hh->dyn_relocs == NULL)
2066 /* If this is a -Bsymbolic shared link, then we need to discard all
2067 space allocated for dynamic pc-relative relocs against symbols
2068 defined in a regular object. For the normal shared case, discard
2069 space for relocs that have become local due to symbol visibility
2071 if (bfd_link_pic (info))
2073 #if RELATIVE_DYNRELOCS
2074 if (SYMBOL_CALLS_LOCAL (info, eh))
2076 struct elf32_hppa_dyn_reloc_entry **hdh_pp;
2078 for (hdh_pp = &hh->dyn_relocs; (hdh_p = *hdh_pp) != NULL; )
2080 hdh_p->count -= hdh_p->relative_count;
2081 hdh_p->relative_count = 0;
2082 if (hdh_p->count == 0)
2083 *hdh_pp = hdh_p->hdh_next;
2085 hdh_pp = &hdh_p->hdh_next;
2090 /* Also discard relocs on undefined weak syms with non-default
2092 if (hh->dyn_relocs != NULL
2093 && eh->root.type == bfd_link_hash_undefweak)
2095 if (ELF_ST_VISIBILITY (eh->other) != STV_DEFAULT)
2096 hh->dyn_relocs = NULL;
2098 else if (!ensure_undef_weak_dynamic (info, eh))
2104 /* For the non-shared case, discard space for relocs against
2105 symbols which turn out to need copy relocs or are not
2108 if (!eh->non_got_ref
2109 && ((ELIMINATE_COPY_RELOCS
2111 && !eh->def_regular)
2112 || (htab->etab.dynamic_sections_created
2113 && (eh->root.type == bfd_link_hash_undefweak
2114 || eh->root.type == bfd_link_hash_undefined))))
2116 if (!ensure_undef_weak_dynamic (info, eh))
2119 /* If that succeeded, we know we'll be keeping all the
2121 if (eh->dynindx != -1)
2125 hh->dyn_relocs = NULL;
2131 /* Finally, allocate space. */
2132 for (hdh_p = hh->dyn_relocs; hdh_p != NULL; hdh_p = hdh_p->hdh_next)
2134 asection *sreloc = elf_section_data (hdh_p->sec)->sreloc;
2135 sreloc->size += hdh_p->count * sizeof (Elf32_External_Rela);
2141 /* This function is called via elf_link_hash_traverse to force
2142 millicode symbols local so they do not end up as globals in the
2143 dynamic symbol table. We ought to be able to do this in
2144 adjust_dynamic_symbol, but our adjust_dynamic_symbol is not called
2145 for all dynamic symbols. Arguably, this is a bug in
2146 elf_adjust_dynamic_symbol. */
2149 clobber_millicode_symbols (struct elf_link_hash_entry *eh,
2150 struct bfd_link_info *info)
2152 if (eh->type == STT_PARISC_MILLI
2153 && !eh->forced_local)
2155 elf32_hppa_hide_symbol (info, eh, TRUE);
2160 /* Find any dynamic relocs that apply to read-only sections. */
2163 readonly_dynrelocs (struct elf_link_hash_entry *eh, void *inf)
2165 struct elf32_hppa_link_hash_entry *hh;
2166 struct elf32_hppa_dyn_reloc_entry *hdh_p;
2168 hh = hppa_elf_hash_entry (eh);
2169 for (hdh_p = hh->dyn_relocs; hdh_p != NULL; hdh_p = hdh_p->hdh_next)
2171 asection *sec = hdh_p->sec->output_section;
2173 if (sec != NULL && (sec->flags & SEC_READONLY) != 0)
2175 struct bfd_link_info *info = inf;
2177 info->flags |= DF_TEXTREL;
2179 /* Not an error, just cut short the traversal. */
2186 /* Set the sizes of the dynamic sections. */
2189 elf32_hppa_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
2190 struct bfd_link_info *info)
2192 struct elf32_hppa_link_hash_table *htab;
2198 htab = hppa_link_hash_table (info);
2202 dynobj = htab->etab.dynobj;
2206 if (htab->etab.dynamic_sections_created)
2208 /* Set the contents of the .interp section to the interpreter. */
2209 if (bfd_link_executable (info) && !info->nointerp)
2211 sec = bfd_get_linker_section (dynobj, ".interp");
2214 sec->size = sizeof ELF_DYNAMIC_INTERPRETER;
2215 sec->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
2218 /* Force millicode symbols local. */
2219 elf_link_hash_traverse (&htab->etab,
2220 clobber_millicode_symbols,
2224 /* Set up .got and .plt offsets for local syms, and space for local
2226 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
2228 bfd_signed_vma *local_got;
2229 bfd_signed_vma *end_local_got;
2230 bfd_signed_vma *local_plt;
2231 bfd_signed_vma *end_local_plt;
2232 bfd_size_type locsymcount;
2233 Elf_Internal_Shdr *symtab_hdr;
2235 char *local_tls_type;
2237 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour)
2240 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
2242 struct elf32_hppa_dyn_reloc_entry *hdh_p;
2244 for (hdh_p = ((struct elf32_hppa_dyn_reloc_entry *)
2245 elf_section_data (sec)->local_dynrel);
2247 hdh_p = hdh_p->hdh_next)
2249 if (!bfd_is_abs_section (hdh_p->sec)
2250 && bfd_is_abs_section (hdh_p->sec->output_section))
2252 /* Input section has been discarded, either because
2253 it is a copy of a linkonce section or due to
2254 linker script /DISCARD/, so we'll be discarding
2257 else if (hdh_p->count != 0)
2259 srel = elf_section_data (hdh_p->sec)->sreloc;
2260 srel->size += hdh_p->count * sizeof (Elf32_External_Rela);
2261 if ((hdh_p->sec->output_section->flags & SEC_READONLY) != 0)
2262 info->flags |= DF_TEXTREL;
2267 local_got = elf_local_got_refcounts (ibfd);
2271 symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
2272 locsymcount = symtab_hdr->sh_info;
2273 end_local_got = local_got + locsymcount;
2274 local_tls_type = hppa_elf_local_got_tls_type (ibfd);
2275 sec = htab->etab.sgot;
2276 srel = htab->etab.srelgot;
2277 for (; local_got < end_local_got; ++local_got)
2281 *local_got = sec->size;
2282 sec->size += GOT_ENTRY_SIZE;
2283 if ((*local_tls_type & (GOT_TLS_GD | GOT_TLS_IE)) == (GOT_TLS_GD | GOT_TLS_IE))
2284 sec->size += 2 * GOT_ENTRY_SIZE;
2285 else if ((*local_tls_type & GOT_TLS_GD) == GOT_TLS_GD)
2286 sec->size += GOT_ENTRY_SIZE;
2287 if (bfd_link_pic (info))
2289 srel->size += sizeof (Elf32_External_Rela);
2290 if ((*local_tls_type & (GOT_TLS_GD | GOT_TLS_IE)) == (GOT_TLS_GD | GOT_TLS_IE))
2291 srel->size += 2 * sizeof (Elf32_External_Rela);
2292 else if ((*local_tls_type & GOT_TLS_GD) == GOT_TLS_GD)
2293 srel->size += sizeof (Elf32_External_Rela);
2297 *local_got = (bfd_vma) -1;
2302 local_plt = end_local_got;
2303 end_local_plt = local_plt + locsymcount;
2304 if (! htab->etab.dynamic_sections_created)
2306 /* Won't be used, but be safe. */
2307 for (; local_plt < end_local_plt; ++local_plt)
2308 *local_plt = (bfd_vma) -1;
2312 sec = htab->etab.splt;
2313 srel = htab->etab.srelplt;
2314 for (; local_plt < end_local_plt; ++local_plt)
2318 *local_plt = sec->size;
2319 sec->size += PLT_ENTRY_SIZE;
2320 if (bfd_link_pic (info))
2321 srel->size += sizeof (Elf32_External_Rela);
2324 *local_plt = (bfd_vma) -1;
2329 if (htab->tls_ldm_got.refcount > 0)
2331 /* Allocate 2 got entries and 1 dynamic reloc for
2332 R_PARISC_TLS_DTPMOD32 relocs. */
2333 htab->tls_ldm_got.offset = htab->etab.sgot->size;
2334 htab->etab.sgot->size += (GOT_ENTRY_SIZE * 2);
2335 htab->etab.srelgot->size += sizeof (Elf32_External_Rela);
2338 htab->tls_ldm_got.offset = -1;
2340 /* Do all the .plt entries without relocs first. The dynamic linker
2341 uses the last .plt reloc to find the end of the .plt (and hence
2342 the start of the .got) for lazy linking. */
2343 elf_link_hash_traverse (&htab->etab, allocate_plt_static, info);
2345 /* Allocate global sym .plt and .got entries, and space for global
2346 sym dynamic relocs. */
2347 elf_link_hash_traverse (&htab->etab, allocate_dynrelocs, info);
2349 /* The check_relocs and adjust_dynamic_symbol entry points have
2350 determined the sizes of the various dynamic sections. Allocate
2353 for (sec = dynobj->sections; sec != NULL; sec = sec->next)
2355 if ((sec->flags & SEC_LINKER_CREATED) == 0)
2358 if (sec == htab->etab.splt)
2360 if (htab->need_plt_stub)
2362 /* Make space for the plt stub at the end of the .plt
2363 section. We want this stub right at the end, up
2364 against the .got section. */
2365 int gotalign = bfd_section_alignment (dynobj, htab->etab.sgot);
2366 int pltalign = bfd_section_alignment (dynobj, sec);
2369 if (gotalign > pltalign)
2370 (void) bfd_set_section_alignment (dynobj, sec, gotalign);
2371 mask = ((bfd_size_type) 1 << gotalign) - 1;
2372 sec->size = (sec->size + sizeof (plt_stub) + mask) & ~mask;
2375 else if (sec == htab->etab.sgot
2376 || sec == htab->etab.sdynbss
2377 || sec == htab->etab.sdynrelro)
2379 else if (CONST_STRNEQ (bfd_get_section_name (dynobj, sec), ".rela"))
2383 /* Remember whether there are any reloc sections other
2385 if (sec != htab->etab.srelplt)
2388 /* We use the reloc_count field as a counter if we need
2389 to copy relocs into the output file. */
2390 sec->reloc_count = 0;
2395 /* It's not one of our sections, so don't allocate space. */
2401 /* If we don't need this section, strip it from the
2402 output file. This is mostly to handle .rela.bss and
2403 .rela.plt. We must create both sections in
2404 create_dynamic_sections, because they must be created
2405 before the linker maps input sections to output
2406 sections. The linker does that before
2407 adjust_dynamic_symbol is called, and it is that
2408 function which decides whether anything needs to go
2409 into these sections. */
2410 sec->flags |= SEC_EXCLUDE;
2414 if ((sec->flags & SEC_HAS_CONTENTS) == 0)
2417 /* Allocate memory for the section contents. Zero it, because
2418 we may not fill in all the reloc sections. */
2419 sec->contents = bfd_zalloc (dynobj, sec->size);
2420 if (sec->contents == NULL)
2424 if (htab->etab.dynamic_sections_created)
2426 /* Like IA-64 and HPPA64, always create a DT_PLTGOT. It
2427 actually has nothing to do with the PLT, it is how we
2428 communicate the LTP value of a load module to the dynamic
2430 #define add_dynamic_entry(TAG, VAL) \
2431 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
2433 if (!add_dynamic_entry (DT_PLTGOT, 0))
2436 /* Add some entries to the .dynamic section. We fill in the
2437 values later, in elf32_hppa_finish_dynamic_sections, but we
2438 must add the entries now so that we get the correct size for
2439 the .dynamic section. The DT_DEBUG entry is filled in by the
2440 dynamic linker and used by the debugger. */
2441 if (bfd_link_executable (info))
2443 if (!add_dynamic_entry (DT_DEBUG, 0))
2447 if (htab->etab.srelplt->size != 0)
2449 if (!add_dynamic_entry (DT_PLTRELSZ, 0)
2450 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
2451 || !add_dynamic_entry (DT_JMPREL, 0))
2457 if (!add_dynamic_entry (DT_RELA, 0)
2458 || !add_dynamic_entry (DT_RELASZ, 0)
2459 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf32_External_Rela)))
2462 /* If any dynamic relocs apply to a read-only section,
2463 then we need a DT_TEXTREL entry. */
2464 if ((info->flags & DF_TEXTREL) == 0)
2465 elf_link_hash_traverse (&htab->etab, readonly_dynrelocs, info);
2467 if ((info->flags & DF_TEXTREL) != 0)
2469 if (!add_dynamic_entry (DT_TEXTREL, 0))
2474 #undef add_dynamic_entry
2479 /* External entry points for sizing and building linker stubs. */
2481 /* Set up various things so that we can make a list of input sections
2482 for each output section included in the link. Returns -1 on error,
2483 0 when no stubs will be needed, and 1 on success. */
2486 elf32_hppa_setup_section_lists (bfd *output_bfd, struct bfd_link_info *info)
2489 unsigned int bfd_count;
2490 unsigned int top_id, top_index;
2492 asection **input_list, **list;
2494 struct elf32_hppa_link_hash_table *htab = hppa_link_hash_table (info);
2499 /* Count the number of input BFDs and find the top input section id. */
2500 for (input_bfd = info->input_bfds, bfd_count = 0, top_id = 0;
2502 input_bfd = input_bfd->link.next)
2505 for (section = input_bfd->sections;
2507 section = section->next)
2509 if (top_id < section->id)
2510 top_id = section->id;
2513 htab->bfd_count = bfd_count;
2515 amt = sizeof (struct map_stub) * (top_id + 1);
2516 htab->stub_group = bfd_zmalloc (amt);
2517 if (htab->stub_group == NULL)
2520 /* We can't use output_bfd->section_count here to find the top output
2521 section index as some sections may have been removed, and
2522 strip_excluded_output_sections doesn't renumber the indices. */
2523 for (section = output_bfd->sections, top_index = 0;
2525 section = section->next)
2527 if (top_index < section->index)
2528 top_index = section->index;
2531 htab->top_index = top_index;
2532 amt = sizeof (asection *) * (top_index + 1);
2533 input_list = bfd_malloc (amt);
2534 htab->input_list = input_list;
2535 if (input_list == NULL)
2538 /* For sections we aren't interested in, mark their entries with a
2539 value we can check later. */
2540 list = input_list + top_index;
2542 *list = bfd_abs_section_ptr;
2543 while (list-- != input_list);
2545 for (section = output_bfd->sections;
2547 section = section->next)
2549 if ((section->flags & SEC_CODE) != 0)
2550 input_list[section->index] = NULL;
2556 /* The linker repeatedly calls this function for each input section,
2557 in the order that input sections are linked into output sections.
2558 Build lists of input sections to determine groupings between which
2559 we may insert linker stubs. */
2562 elf32_hppa_next_input_section (struct bfd_link_info *info, asection *isec)
2564 struct elf32_hppa_link_hash_table *htab = hppa_link_hash_table (info);
2569 if (isec->output_section->index <= htab->top_index)
2571 asection **list = htab->input_list + isec->output_section->index;
2572 if (*list != bfd_abs_section_ptr)
2574 /* Steal the link_sec pointer for our list. */
2575 #define PREV_SEC(sec) (htab->stub_group[(sec)->id].link_sec)
2576 /* This happens to make the list in reverse order,
2577 which is what we want. */
2578 PREV_SEC (isec) = *list;
2584 /* See whether we can group stub sections together. Grouping stub
2585 sections may result in fewer stubs. More importantly, we need to
2586 put all .init* and .fini* stubs at the beginning of the .init or
2587 .fini output sections respectively, because glibc splits the
2588 _init and _fini functions into multiple parts. Putting a stub in
2589 the middle of a function is not a good idea. */
2592 group_sections (struct elf32_hppa_link_hash_table *htab,
2593 bfd_size_type stub_group_size,
2594 bfd_boolean stubs_always_before_branch)
2596 asection **list = htab->input_list + htab->top_index;
2599 asection *tail = *list;
2600 if (tail == bfd_abs_section_ptr)
2602 while (tail != NULL)
2606 bfd_size_type total;
2607 bfd_boolean big_sec;
2611 big_sec = total >= stub_group_size;
2613 while ((prev = PREV_SEC (curr)) != NULL
2614 && ((total += curr->output_offset - prev->output_offset)
2618 /* OK, the size from the start of CURR to the end is less
2619 than 240000 bytes and thus can be handled by one stub
2620 section. (or the tail section is itself larger than
2621 240000 bytes, in which case we may be toast.)
2622 We should really be keeping track of the total size of
2623 stubs added here, as stubs contribute to the final output
2624 section size. That's a little tricky, and this way will
2625 only break if stubs added total more than 22144 bytes, or
2626 2768 long branch stubs. It seems unlikely for more than
2627 2768 different functions to be called, especially from
2628 code only 240000 bytes long. This limit used to be
2629 250000, but c++ code tends to generate lots of little
2630 functions, and sometimes violated the assumption. */
2633 prev = PREV_SEC (tail);
2634 /* Set up this stub group. */
2635 htab->stub_group[tail->id].link_sec = curr;
2637 while (tail != curr && (tail = prev) != NULL);
2639 /* But wait, there's more! Input sections up to 240000
2640 bytes before the stub section can be handled by it too.
2641 Don't do this if we have a really large section after the
2642 stubs, as adding more stubs increases the chance that
2643 branches may not reach into the stub section. */
2644 if (!stubs_always_before_branch && !big_sec)
2648 && ((total += tail->output_offset - prev->output_offset)
2652 prev = PREV_SEC (tail);
2653 htab->stub_group[tail->id].link_sec = curr;
2659 while (list-- != htab->input_list);
2660 free (htab->input_list);
2664 /* Read in all local syms for all input bfds, and create hash entries
2665 for export stubs if we are building a multi-subspace shared lib.
2666 Returns -1 on error, 1 if export stubs created, 0 otherwise. */
2669 get_local_syms (bfd *output_bfd, bfd *input_bfd, struct bfd_link_info *info)
2671 unsigned int bfd_indx;
2672 Elf_Internal_Sym *local_syms, **all_local_syms;
2673 int stub_changed = 0;
2674 struct elf32_hppa_link_hash_table *htab = hppa_link_hash_table (info);
2679 /* We want to read in symbol extension records only once. To do this
2680 we need to read in the local symbols in parallel and save them for
2681 later use; so hold pointers to the local symbols in an array. */
2682 bfd_size_type amt = sizeof (Elf_Internal_Sym *) * htab->bfd_count;
2683 all_local_syms = bfd_zmalloc (amt);
2684 htab->all_local_syms = all_local_syms;
2685 if (all_local_syms == NULL)
2688 /* Walk over all the input BFDs, swapping in local symbols.
2689 If we are creating a shared library, create hash entries for the
2693 input_bfd = input_bfd->link.next, bfd_indx++)
2695 Elf_Internal_Shdr *symtab_hdr;
2697 /* We'll need the symbol table in a second. */
2698 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
2699 if (symtab_hdr->sh_info == 0)
2702 /* We need an array of the local symbols attached to the input bfd. */
2703 local_syms = (Elf_Internal_Sym *) symtab_hdr->contents;
2704 if (local_syms == NULL)
2706 local_syms = bfd_elf_get_elf_syms (input_bfd, symtab_hdr,
2707 symtab_hdr->sh_info, 0,
2709 /* Cache them for elf_link_input_bfd. */
2710 symtab_hdr->contents = (unsigned char *) local_syms;
2712 if (local_syms == NULL)
2715 all_local_syms[bfd_indx] = local_syms;
2717 if (bfd_link_pic (info) && htab->multi_subspace)
2719 struct elf_link_hash_entry **eh_syms;
2720 struct elf_link_hash_entry **eh_symend;
2721 unsigned int symcount;
2723 symcount = (symtab_hdr->sh_size / sizeof (Elf32_External_Sym)
2724 - symtab_hdr->sh_info);
2725 eh_syms = (struct elf_link_hash_entry **) elf_sym_hashes (input_bfd);
2726 eh_symend = (struct elf_link_hash_entry **) (eh_syms + symcount);
2728 /* Look through the global syms for functions; We need to
2729 build export stubs for all globally visible functions. */
2730 for (; eh_syms < eh_symend; eh_syms++)
2732 struct elf32_hppa_link_hash_entry *hh;
2734 hh = hppa_elf_hash_entry (*eh_syms);
2736 while (hh->eh.root.type == bfd_link_hash_indirect
2737 || hh->eh.root.type == bfd_link_hash_warning)
2738 hh = hppa_elf_hash_entry (hh->eh.root.u.i.link);
2740 /* At this point in the link, undefined syms have been
2741 resolved, so we need to check that the symbol was
2742 defined in this BFD. */
2743 if ((hh->eh.root.type == bfd_link_hash_defined
2744 || hh->eh.root.type == bfd_link_hash_defweak)
2745 && hh->eh.type == STT_FUNC
2746 && hh->eh.root.u.def.section->output_section != NULL
2747 && (hh->eh.root.u.def.section->output_section->owner
2749 && hh->eh.root.u.def.section->owner == input_bfd
2750 && hh->eh.def_regular
2751 && !hh->eh.forced_local
2752 && ELF_ST_VISIBILITY (hh->eh.other) == STV_DEFAULT)
2755 const char *stub_name;
2756 struct elf32_hppa_stub_hash_entry *hsh;
2758 sec = hh->eh.root.u.def.section;
2759 stub_name = hh_name (hh);
2760 hsh = hppa_stub_hash_lookup (&htab->bstab,
2765 hsh = hppa_add_stub (stub_name, sec, htab);
2769 hsh->target_value = hh->eh.root.u.def.value;
2770 hsh->target_section = hh->eh.root.u.def.section;
2771 hsh->stub_type = hppa_stub_export;
2777 /* xgettext:c-format */
2778 _bfd_error_handler (_("%B: duplicate export stub %s"),
2779 input_bfd, stub_name);
2786 return stub_changed;
2789 /* Determine and set the size of the stub section for a final link.
2791 The basic idea here is to examine all the relocations looking for
2792 PC-relative calls to a target that is unreachable with a "bl"
2796 elf32_hppa_size_stubs
2797 (bfd *output_bfd, bfd *stub_bfd, struct bfd_link_info *info,
2798 bfd_boolean multi_subspace, bfd_signed_vma group_size,
2799 asection * (*add_stub_section) (const char *, asection *),
2800 void (*layout_sections_again) (void))
2802 bfd_size_type stub_group_size;
2803 bfd_boolean stubs_always_before_branch;
2804 bfd_boolean stub_changed;
2805 struct elf32_hppa_link_hash_table *htab = hppa_link_hash_table (info);
2810 /* Stash our params away. */
2811 htab->stub_bfd = stub_bfd;
2812 htab->multi_subspace = multi_subspace;
2813 htab->add_stub_section = add_stub_section;
2814 htab->layout_sections_again = layout_sections_again;
2815 stubs_always_before_branch = group_size < 0;
2817 stub_group_size = -group_size;
2819 stub_group_size = group_size;
2820 if (stub_group_size == 1)
2822 /* Default values. */
2823 if (stubs_always_before_branch)
2825 stub_group_size = 7680000;
2826 if (htab->has_17bit_branch || htab->multi_subspace)
2827 stub_group_size = 240000;
2828 if (htab->has_12bit_branch)
2829 stub_group_size = 7500;
2833 stub_group_size = 6971392;
2834 if (htab->has_17bit_branch || htab->multi_subspace)
2835 stub_group_size = 217856;
2836 if (htab->has_12bit_branch)
2837 stub_group_size = 6808;
2841 group_sections (htab, stub_group_size, stubs_always_before_branch);
2843 switch (get_local_syms (output_bfd, info->input_bfds, info))
2846 if (htab->all_local_syms)
2847 goto error_ret_free_local;
2851 stub_changed = FALSE;
2855 stub_changed = TRUE;
2862 unsigned int bfd_indx;
2865 for (input_bfd = info->input_bfds, bfd_indx = 0;
2867 input_bfd = input_bfd->link.next, bfd_indx++)
2869 Elf_Internal_Shdr *symtab_hdr;
2871 Elf_Internal_Sym *local_syms;
2873 /* We'll need the symbol table in a second. */
2874 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
2875 if (symtab_hdr->sh_info == 0)
2878 local_syms = htab->all_local_syms[bfd_indx];
2880 /* Walk over each section attached to the input bfd. */
2881 for (section = input_bfd->sections;
2883 section = section->next)
2885 Elf_Internal_Rela *internal_relocs, *irelaend, *irela;
2887 /* If there aren't any relocs, then there's nothing more
2889 if ((section->flags & SEC_RELOC) == 0
2890 || section->reloc_count == 0)
2893 /* If this section is a link-once section that will be
2894 discarded, then don't create any stubs. */
2895 if (section->output_section == NULL
2896 || section->output_section->owner != output_bfd)
2899 /* Get the relocs. */
2901 = _bfd_elf_link_read_relocs (input_bfd, section, NULL, NULL,
2903 if (internal_relocs == NULL)
2904 goto error_ret_free_local;
2906 /* Now examine each relocation. */
2907 irela = internal_relocs;
2908 irelaend = irela + section->reloc_count;
2909 for (; irela < irelaend; irela++)
2911 unsigned int r_type, r_indx;
2912 enum elf32_hppa_stub_type stub_type;
2913 struct elf32_hppa_stub_hash_entry *hsh;
2916 bfd_vma destination;
2917 struct elf32_hppa_link_hash_entry *hh;
2919 const asection *id_sec;
2921 r_type = ELF32_R_TYPE (irela->r_info);
2922 r_indx = ELF32_R_SYM (irela->r_info);
2924 if (r_type >= (unsigned int) R_PARISC_UNIMPLEMENTED)
2926 bfd_set_error (bfd_error_bad_value);
2927 error_ret_free_internal:
2928 if (elf_section_data (section)->relocs == NULL)
2929 free (internal_relocs);
2930 goto error_ret_free_local;
2933 /* Only look for stubs on call instructions. */
2934 if (r_type != (unsigned int) R_PARISC_PCREL12F
2935 && r_type != (unsigned int) R_PARISC_PCREL17F
2936 && r_type != (unsigned int) R_PARISC_PCREL22F)
2939 /* Now determine the call target, its name, value,
2945 if (r_indx < symtab_hdr->sh_info)
2947 /* It's a local symbol. */
2948 Elf_Internal_Sym *sym;
2949 Elf_Internal_Shdr *hdr;
2952 sym = local_syms + r_indx;
2953 if (ELF_ST_TYPE (sym->st_info) != STT_SECTION)
2954 sym_value = sym->st_value;
2955 shndx = sym->st_shndx;
2956 if (shndx < elf_numsections (input_bfd))
2958 hdr = elf_elfsections (input_bfd)[shndx];
2959 sym_sec = hdr->bfd_section;
2960 destination = (sym_value + irela->r_addend
2961 + sym_sec->output_offset
2962 + sym_sec->output_section->vma);
2967 /* It's an external symbol. */
2970 e_indx = r_indx - symtab_hdr->sh_info;
2971 hh = hppa_elf_hash_entry (elf_sym_hashes (input_bfd)[e_indx]);
2973 while (hh->eh.root.type == bfd_link_hash_indirect
2974 || hh->eh.root.type == bfd_link_hash_warning)
2975 hh = hppa_elf_hash_entry (hh->eh.root.u.i.link);
2977 if (hh->eh.root.type == bfd_link_hash_defined
2978 || hh->eh.root.type == bfd_link_hash_defweak)
2980 sym_sec = hh->eh.root.u.def.section;
2981 sym_value = hh->eh.root.u.def.value;
2982 if (sym_sec->output_section != NULL)
2983 destination = (sym_value + irela->r_addend
2984 + sym_sec->output_offset
2985 + sym_sec->output_section->vma);
2987 else if (hh->eh.root.type == bfd_link_hash_undefweak)
2989 if (! bfd_link_pic (info))
2992 else if (hh->eh.root.type == bfd_link_hash_undefined)
2994 if (! (info->unresolved_syms_in_objects == RM_IGNORE
2995 && (ELF_ST_VISIBILITY (hh->eh.other)
2997 && hh->eh.type != STT_PARISC_MILLI))
3002 bfd_set_error (bfd_error_bad_value);
3003 goto error_ret_free_internal;
3007 /* Determine what (if any) linker stub is needed. */
3008 stub_type = hppa_type_of_stub (section, irela, hh,
3010 if (stub_type == hppa_stub_none)
3013 /* Support for grouping stub sections. */
3014 id_sec = htab->stub_group[section->id].link_sec;
3016 /* Get the name of this stub. */
3017 stub_name = hppa_stub_name (id_sec, sym_sec, hh, irela);
3019 goto error_ret_free_internal;
3021 hsh = hppa_stub_hash_lookup (&htab->bstab,
3026 /* The proper stub has already been created. */
3031 hsh = hppa_add_stub (stub_name, section, htab);
3035 goto error_ret_free_internal;
3038 hsh->target_value = sym_value;
3039 hsh->target_section = sym_sec;
3040 hsh->stub_type = stub_type;
3041 if (bfd_link_pic (info))
3043 if (stub_type == hppa_stub_import)
3044 hsh->stub_type = hppa_stub_import_shared;
3045 else if (stub_type == hppa_stub_long_branch)
3046 hsh->stub_type = hppa_stub_long_branch_shared;
3049 stub_changed = TRUE;
3052 /* We're done with the internal relocs, free them. */
3053 if (elf_section_data (section)->relocs == NULL)
3054 free (internal_relocs);
3061 /* OK, we've added some stubs. Find out the new size of the
3063 for (stub_sec = htab->stub_bfd->sections;
3065 stub_sec = stub_sec->next)
3066 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
3069 bfd_hash_traverse (&htab->bstab, hppa_size_one_stub, htab);
3071 /* Ask the linker to do its stuff. */
3072 (*htab->layout_sections_again) ();
3073 stub_changed = FALSE;
3076 free (htab->all_local_syms);
3079 error_ret_free_local:
3080 free (htab->all_local_syms);
3084 /* For a final link, this function is called after we have sized the
3085 stubs to provide a value for __gp. */
3088 elf32_hppa_set_gp (bfd *abfd, struct bfd_link_info *info)
3090 struct bfd_link_hash_entry *h;
3091 asection *sec = NULL;
3094 h = bfd_link_hash_lookup (info->hash, "$global$", FALSE, FALSE, FALSE);
3097 && (h->type == bfd_link_hash_defined
3098 || h->type == bfd_link_hash_defweak))
3100 gp_val = h->u.def.value;
3101 sec = h->u.def.section;
3105 asection *splt = bfd_get_section_by_name (abfd, ".plt");
3106 asection *sgot = bfd_get_section_by_name (abfd, ".got");
3108 /* Choose to point our LTP at, in this order, one of .plt, .got,
3109 or .data, if these sections exist. In the case of choosing
3110 .plt try to make the LTP ideal for addressing anywhere in the
3111 .plt or .got with a 14 bit signed offset. Typically, the end
3112 of the .plt is the start of the .got, so choose .plt + 0x2000
3113 if either the .plt or .got is larger than 0x2000. If both
3114 the .plt and .got are smaller than 0x2000, choose the end of
3115 the .plt section. */
3116 sec = strcmp (bfd_get_target (abfd), "elf32-hppa-netbsd") == 0
3121 if (gp_val > 0x2000 || (sgot && sgot->size > 0x2000))
3131 if (strcmp (bfd_get_target (abfd), "elf32-hppa-netbsd") != 0)
3133 /* We know we don't have a .plt. If .got is large,
3135 if (sec->size > 0x2000)
3141 /* No .plt or .got. Who cares what the LTP is? */
3142 sec = bfd_get_section_by_name (abfd, ".data");
3148 h->type = bfd_link_hash_defined;
3149 h->u.def.value = gp_val;
3151 h->u.def.section = sec;
3153 h->u.def.section = bfd_abs_section_ptr;
3157 if (bfd_get_flavour (abfd) == bfd_target_elf_flavour)
3159 if (sec != NULL && sec->output_section != NULL)
3160 gp_val += sec->output_section->vma + sec->output_offset;
3162 elf_gp (abfd) = gp_val;
3167 /* Build all the stubs associated with the current output file. The
3168 stubs are kept in a hash table attached to the main linker hash
3169 table. We also set up the .plt entries for statically linked PIC
3170 functions here. This function is called via hppaelf_finish in the
3174 elf32_hppa_build_stubs (struct bfd_link_info *info)
3177 struct bfd_hash_table *table;
3178 struct elf32_hppa_link_hash_table *htab;
3180 htab = hppa_link_hash_table (info);
3184 for (stub_sec = htab->stub_bfd->sections;
3186 stub_sec = stub_sec->next)
3187 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0
3188 && stub_sec->size != 0)
3190 /* Allocate memory to hold the linker stubs. */
3191 stub_sec->contents = bfd_zalloc (htab->stub_bfd, stub_sec->size);
3192 if (stub_sec->contents == NULL)
3197 /* Build the stubs as directed by the stub hash table. */
3198 table = &htab->bstab;
3199 bfd_hash_traverse (table, hppa_build_one_stub, info);
3204 /* Return the base vma address which should be subtracted from the real
3205 address when resolving a dtpoff relocation.
3206 This is PT_TLS segment p_vaddr. */
3209 dtpoff_base (struct bfd_link_info *info)
3211 /* If tls_sec is NULL, we should have signalled an error already. */
3212 if (elf_hash_table (info)->tls_sec == NULL)
3214 return elf_hash_table (info)->tls_sec->vma;
3217 /* Return the relocation value for R_PARISC_TLS_TPOFF*.. */
3220 tpoff (struct bfd_link_info *info, bfd_vma address)
3222 struct elf_link_hash_table *htab = elf_hash_table (info);
3224 /* If tls_sec is NULL, we should have signalled an error already. */
3225 if (htab->tls_sec == NULL)
3227 /* hppa TLS ABI is variant I and static TLS block start just after
3228 tcbhead structure which has 2 pointer fields. */
3229 return (address - htab->tls_sec->vma
3230 + align_power ((bfd_vma) 8, htab->tls_sec->alignment_power));
3233 /* Perform a final link. */
3236 elf32_hppa_final_link (bfd *abfd, struct bfd_link_info *info)
3240 /* Invoke the regular ELF linker to do all the work. */
3241 if (!bfd_elf_final_link (abfd, info))
3244 /* If we're producing a final executable, sort the contents of the
3246 if (bfd_link_relocatable (info))
3249 /* Do not attempt to sort non-regular files. This is here
3250 especially for configure scripts and kernel builds which run
3251 tests with "ld [...] -o /dev/null". */
3252 if (stat (abfd->filename, &buf) != 0
3253 || !S_ISREG(buf.st_mode))
3256 return elf_hppa_sort_unwind (abfd);
3259 /* Record the lowest address for the data and text segments. */
3262 hppa_record_segment_addr (bfd *abfd, asection *section, void *data)
3264 struct elf32_hppa_link_hash_table *htab;
3266 htab = (struct elf32_hppa_link_hash_table*) data;
3270 if ((section->flags & (SEC_ALLOC | SEC_LOAD)) == (SEC_ALLOC | SEC_LOAD))
3273 Elf_Internal_Phdr *p;
3275 p = _bfd_elf_find_segment_containing_section (abfd, section->output_section);
3276 BFD_ASSERT (p != NULL);
3279 if ((section->flags & SEC_READONLY) != 0)
3281 if (value < htab->text_segment_base)
3282 htab->text_segment_base = value;
3286 if (value < htab->data_segment_base)
3287 htab->data_segment_base = value;
3292 /* Perform a relocation as part of a final link. */
3294 static bfd_reloc_status_type
3295 final_link_relocate (asection *input_section,
3297 const Elf_Internal_Rela *rela,
3299 struct elf32_hppa_link_hash_table *htab,
3301 struct elf32_hppa_link_hash_entry *hh,
3302 struct bfd_link_info *info)
3305 unsigned int r_type = ELF32_R_TYPE (rela->r_info);
3306 unsigned int orig_r_type = r_type;
3307 reloc_howto_type *howto = elf_hppa_howto_table + r_type;
3308 int r_format = howto->bitsize;
3309 enum hppa_reloc_field_selector_type_alt r_field;
3310 bfd *input_bfd = input_section->owner;
3311 bfd_vma offset = rela->r_offset;
3312 bfd_vma max_branch_offset = 0;
3313 bfd_byte *hit_data = contents + offset;
3314 bfd_signed_vma addend = rela->r_addend;
3316 struct elf32_hppa_stub_hash_entry *hsh = NULL;
3319 if (r_type == R_PARISC_NONE)
3320 return bfd_reloc_ok;
3322 insn = bfd_get_32 (input_bfd, hit_data);
3324 /* Find out where we are and where we're going. */
3325 location = (offset +
3326 input_section->output_offset +
3327 input_section->output_section->vma);
3329 /* If we are not building a shared library, convert DLTIND relocs to
3331 if (!bfd_link_pic (info))
3335 case R_PARISC_DLTIND21L:
3336 case R_PARISC_TLS_GD21L:
3337 case R_PARISC_TLS_LDM21L:
3338 case R_PARISC_TLS_IE21L:
3339 r_type = R_PARISC_DPREL21L;
3342 case R_PARISC_DLTIND14R:
3343 case R_PARISC_TLS_GD14R:
3344 case R_PARISC_TLS_LDM14R:
3345 case R_PARISC_TLS_IE14R:
3346 r_type = R_PARISC_DPREL14R;
3349 case R_PARISC_DLTIND14F:
3350 r_type = R_PARISC_DPREL14F;
3357 case R_PARISC_PCREL12F:
3358 case R_PARISC_PCREL17F:
3359 case R_PARISC_PCREL22F:
3360 /* If this call should go via the plt, find the import stub in
3363 || sym_sec->output_section == NULL
3365 && hh->eh.plt.offset != (bfd_vma) -1
3366 && hh->eh.dynindx != -1
3368 && (bfd_link_pic (info)
3369 || !hh->eh.def_regular
3370 || hh->eh.root.type == bfd_link_hash_defweak)))
3372 hsh = hppa_get_stub_entry (input_section, sym_sec,
3376 value = (hsh->stub_offset
3377 + hsh->stub_sec->output_offset
3378 + hsh->stub_sec->output_section->vma);
3381 else if (sym_sec == NULL && hh != NULL
3382 && hh->eh.root.type == bfd_link_hash_undefweak)
3384 /* It's OK if undefined weak. Calls to undefined weak
3385 symbols behave as if the "called" function
3386 immediately returns. We can thus call to a weak
3387 function without first checking whether the function
3393 return bfd_reloc_undefined;
3397 case R_PARISC_PCREL21L:
3398 case R_PARISC_PCREL17C:
3399 case R_PARISC_PCREL17R:
3400 case R_PARISC_PCREL14R:
3401 case R_PARISC_PCREL14F:
3402 case R_PARISC_PCREL32:
3403 /* Make it a pc relative offset. */
3408 case R_PARISC_DPREL21L:
3409 case R_PARISC_DPREL14R:
3410 case R_PARISC_DPREL14F:
3411 /* Convert instructions that use the linkage table pointer (r19) to
3412 instructions that use the global data pointer (dp). This is the
3413 most efficient way of using PIC code in an incomplete executable,
3414 but the user must follow the standard runtime conventions for
3415 accessing data for this to work. */
3416 if (orig_r_type != r_type)
3418 if (r_type == R_PARISC_DPREL21L)
3420 /* GCC sometimes uses a register other than r19 for the
3421 operation, so we must convert any addil instruction
3422 that uses this relocation. */
3423 if ((insn & 0xfc000000) == ((int) OP_ADDIL << 26))
3426 /* We must have a ldil instruction. It's too hard to find
3427 and convert the associated add instruction, so issue an
3430 /* xgettext:c-format */
3431 (_("%B(%A+%#Lx): %s fixup for insn %#x is not supported in a non-shared link"),
3438 else if (r_type == R_PARISC_DPREL14F)
3440 /* This must be a format 1 load/store. Change the base
3442 insn = (insn & 0xfc1ffff) | (27 << 21);
3446 /* For all the DP relative relocations, we need to examine the symbol's
3447 section. If it has no section or if it's a code section, then
3448 "data pointer relative" makes no sense. In that case we don't
3449 adjust the "value", and for 21 bit addil instructions, we change the
3450 source addend register from %dp to %r0. This situation commonly
3451 arises for undefined weak symbols and when a variable's "constness"
3452 is declared differently from the way the variable is defined. For
3453 instance: "extern int foo" with foo defined as "const int foo". */
3454 if (sym_sec == NULL || (sym_sec->flags & SEC_CODE) != 0)
3456 if ((insn & ((0x3f << 26) | (0x1f << 21)))
3457 == (((int) OP_ADDIL << 26) | (27 << 21)))
3459 insn &= ~ (0x1f << 21);
3461 /* Now try to make things easy for the dynamic linker. */
3467 case R_PARISC_DLTIND21L:
3468 case R_PARISC_DLTIND14R:
3469 case R_PARISC_DLTIND14F:
3470 case R_PARISC_TLS_GD21L:
3471 case R_PARISC_TLS_LDM21L:
3472 case R_PARISC_TLS_IE21L:
3473 case R_PARISC_TLS_GD14R:
3474 case R_PARISC_TLS_LDM14R:
3475 case R_PARISC_TLS_IE14R:
3476 value -= elf_gp (input_section->output_section->owner);
3479 case R_PARISC_SEGREL32:
3480 if ((sym_sec->flags & SEC_CODE) != 0)
3481 value -= htab->text_segment_base;
3483 value -= htab->data_segment_base;
3492 case R_PARISC_DIR32:
3493 case R_PARISC_DIR14F:
3494 case R_PARISC_DIR17F:
3495 case R_PARISC_PCREL17C:
3496 case R_PARISC_PCREL14F:
3497 case R_PARISC_PCREL32:
3498 case R_PARISC_DPREL14F:
3499 case R_PARISC_PLABEL32:
3500 case R_PARISC_DLTIND14F:
3501 case R_PARISC_SEGBASE:
3502 case R_PARISC_SEGREL32:
3503 case R_PARISC_TLS_DTPMOD32:
3504 case R_PARISC_TLS_DTPOFF32:
3505 case R_PARISC_TLS_TPREL32:
3509 case R_PARISC_DLTIND21L:
3510 case R_PARISC_PCREL21L:
3511 case R_PARISC_PLABEL21L:
3515 case R_PARISC_DIR21L:
3516 case R_PARISC_DPREL21L:
3517 case R_PARISC_TLS_GD21L:
3518 case R_PARISC_TLS_LDM21L:
3519 case R_PARISC_TLS_LDO21L:
3520 case R_PARISC_TLS_IE21L:
3521 case R_PARISC_TLS_LE21L:
3525 case R_PARISC_PCREL17R:
3526 case R_PARISC_PCREL14R:
3527 case R_PARISC_PLABEL14R:
3528 case R_PARISC_DLTIND14R:
3532 case R_PARISC_DIR17R:
3533 case R_PARISC_DIR14R:
3534 case R_PARISC_DPREL14R:
3535 case R_PARISC_TLS_GD14R:
3536 case R_PARISC_TLS_LDM14R:
3537 case R_PARISC_TLS_LDO14R:
3538 case R_PARISC_TLS_IE14R:
3539 case R_PARISC_TLS_LE14R:
3543 case R_PARISC_PCREL12F:
3544 case R_PARISC_PCREL17F:
3545 case R_PARISC_PCREL22F:
3548 if (r_type == (unsigned int) R_PARISC_PCREL17F)
3550 max_branch_offset = (1 << (17-1)) << 2;
3552 else if (r_type == (unsigned int) R_PARISC_PCREL12F)
3554 max_branch_offset = (1 << (12-1)) << 2;
3558 max_branch_offset = (1 << (22-1)) << 2;
3561 /* sym_sec is NULL on undefined weak syms or when shared on
3562 undefined syms. We've already checked for a stub for the
3563 shared undefined case. */
3564 if (sym_sec == NULL)
3567 /* If the branch is out of reach, then redirect the
3568 call to the local stub for this function. */
3569 if (value + addend + max_branch_offset >= 2*max_branch_offset)
3571 hsh = hppa_get_stub_entry (input_section, sym_sec,
3574 return bfd_reloc_undefined;
3576 /* Munge up the value and addend so that we call the stub
3577 rather than the procedure directly. */
3578 value = (hsh->stub_offset
3579 + hsh->stub_sec->output_offset
3580 + hsh->stub_sec->output_section->vma
3586 /* Something we don't know how to handle. */
3588 return bfd_reloc_notsupported;
3591 /* Make sure we can reach the stub. */
3592 if (max_branch_offset != 0
3593 && value + addend + max_branch_offset >= 2*max_branch_offset)
3596 /* xgettext:c-format */
3597 (_("%B(%A+%#Lx): cannot reach %s, recompile with -ffunction-sections"),
3601 hsh->bh_root.string);
3602 bfd_set_error (bfd_error_bad_value);
3603 return bfd_reloc_notsupported;
3606 val = hppa_field_adjust (value, addend, r_field);
3610 case R_PARISC_PCREL12F:
3611 case R_PARISC_PCREL17C:
3612 case R_PARISC_PCREL17F:
3613 case R_PARISC_PCREL17R:
3614 case R_PARISC_PCREL22F:
3615 case R_PARISC_DIR17F:
3616 case R_PARISC_DIR17R:
3617 /* This is a branch. Divide the offset by four.
3618 Note that we need to decide whether it's a branch or
3619 otherwise by inspecting the reloc. Inspecting insn won't
3620 work as insn might be from a .word directive. */
3628 insn = hppa_rebuild_insn (insn, val, r_format);
3630 /* Update the instruction word. */
3631 bfd_put_32 (input_bfd, (bfd_vma) insn, hit_data);
3632 return bfd_reloc_ok;
3635 /* Relocate an HPPA ELF section. */
3638 elf32_hppa_relocate_section (bfd *output_bfd,
3639 struct bfd_link_info *info,
3641 asection *input_section,
3643 Elf_Internal_Rela *relocs,
3644 Elf_Internal_Sym *local_syms,
3645 asection **local_sections)
3647 bfd_vma *local_got_offsets;
3648 struct elf32_hppa_link_hash_table *htab;
3649 Elf_Internal_Shdr *symtab_hdr;
3650 Elf_Internal_Rela *rela;
3651 Elf_Internal_Rela *relend;
3653 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
3655 htab = hppa_link_hash_table (info);
3659 local_got_offsets = elf_local_got_offsets (input_bfd);
3662 relend = relocs + input_section->reloc_count;
3663 for (; rela < relend; rela++)
3665 unsigned int r_type;
3666 reloc_howto_type *howto;
3667 unsigned int r_symndx;
3668 struct elf32_hppa_link_hash_entry *hh;
3669 Elf_Internal_Sym *sym;
3672 bfd_reloc_status_type rstatus;
3673 const char *sym_name;
3675 bfd_boolean warned_undef;
3677 r_type = ELF32_R_TYPE (rela->r_info);
3678 if (r_type >= (unsigned int) R_PARISC_UNIMPLEMENTED)
3680 bfd_set_error (bfd_error_bad_value);
3683 if (r_type == (unsigned int) R_PARISC_GNU_VTENTRY
3684 || r_type == (unsigned int) R_PARISC_GNU_VTINHERIT)
3687 r_symndx = ELF32_R_SYM (rela->r_info);
3691 warned_undef = FALSE;
3692 if (r_symndx < symtab_hdr->sh_info)
3694 /* This is a local symbol, h defaults to NULL. */
3695 sym = local_syms + r_symndx;
3696 sym_sec = local_sections[r_symndx];
3697 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sym_sec, rela);
3701 struct elf_link_hash_entry *eh;
3702 bfd_boolean unresolved_reloc, ignored;
3703 struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (input_bfd);
3705 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rela,
3706 r_symndx, symtab_hdr, sym_hashes,
3707 eh, sym_sec, relocation,
3708 unresolved_reloc, warned_undef,
3711 if (!bfd_link_relocatable (info)
3713 && eh->root.type != bfd_link_hash_defined
3714 && eh->root.type != bfd_link_hash_defweak
3715 && eh->root.type != bfd_link_hash_undefweak)
3717 if (info->unresolved_syms_in_objects == RM_IGNORE
3718 && ELF_ST_VISIBILITY (eh->other) == STV_DEFAULT
3719 && eh->type == STT_PARISC_MILLI)
3721 (*info->callbacks->undefined_symbol)
3722 (info, eh_name (eh), input_bfd,
3723 input_section, rela->r_offset, FALSE);
3724 warned_undef = TRUE;
3727 hh = hppa_elf_hash_entry (eh);
3730 if (sym_sec != NULL && discarded_section (sym_sec))
3731 RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section,
3733 elf_hppa_howto_table + r_type, 0,
3736 if (bfd_link_relocatable (info))
3739 /* Do any required modifications to the relocation value, and
3740 determine what types of dynamic info we need to output, if
3745 case R_PARISC_DLTIND14F:
3746 case R_PARISC_DLTIND14R:
3747 case R_PARISC_DLTIND21L:
3750 bfd_boolean do_got = 0;
3752 /* Relocation is to the entry for this symbol in the
3753 global offset table. */
3758 off = hh->eh.got.offset;
3759 dyn = htab->etab.dynamic_sections_created;
3760 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn,
3761 bfd_link_pic (info),
3764 /* If we aren't going to call finish_dynamic_symbol,
3765 then we need to handle initialisation of the .got
3766 entry and create needed relocs here. Since the
3767 offset must always be a multiple of 4, we use the
3768 least significant bit to record whether we have
3769 initialised it already. */
3774 hh->eh.got.offset |= 1;
3781 /* Local symbol case. */
3782 if (local_got_offsets == NULL)
3785 off = local_got_offsets[r_symndx];
3787 /* The offset must always be a multiple of 4. We use
3788 the least significant bit to record whether we have
3789 already generated the necessary reloc. */
3794 local_got_offsets[r_symndx] |= 1;
3801 if (bfd_link_pic (info))
3803 /* Output a dynamic relocation for this GOT entry.
3804 In this case it is relative to the base of the
3805 object because the symbol index is zero. */
3806 Elf_Internal_Rela outrel;
3808 asection *sec = htab->etab.srelgot;
3810 outrel.r_offset = (off
3811 + htab->etab.sgot->output_offset
3812 + htab->etab.sgot->output_section->vma);
3813 outrel.r_info = ELF32_R_INFO (0, R_PARISC_DIR32);
3814 outrel.r_addend = relocation;
3815 loc = sec->contents;
3816 loc += sec->reloc_count++ * sizeof (Elf32_External_Rela);
3817 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
3820 bfd_put_32 (output_bfd, relocation,
3821 htab->etab.sgot->contents + off);
3824 if (off >= (bfd_vma) -2)
3827 /* Add the base of the GOT to the relocation value. */
3829 + htab->etab.sgot->output_offset
3830 + htab->etab.sgot->output_section->vma);
3834 case R_PARISC_SEGREL32:
3835 /* If this is the first SEGREL relocation, then initialize
3836 the segment base values. */
3837 if (htab->text_segment_base == (bfd_vma) -1)
3838 bfd_map_over_sections (output_bfd, hppa_record_segment_addr, htab);
3841 case R_PARISC_PLABEL14R:
3842 case R_PARISC_PLABEL21L:
3843 case R_PARISC_PLABEL32:
3844 if (htab->etab.dynamic_sections_created)
3847 bfd_boolean do_plt = 0;
3848 /* If we have a global symbol with a PLT slot, then
3849 redirect this relocation to it. */
3852 off = hh->eh.plt.offset;
3853 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (1,
3854 bfd_link_pic (info),
3857 /* In a non-shared link, adjust_dynamic_symbols
3858 isn't called for symbols forced local. We
3859 need to write out the plt entry here. */
3864 hh->eh.plt.offset |= 1;
3871 bfd_vma *local_plt_offsets;
3873 if (local_got_offsets == NULL)
3876 local_plt_offsets = local_got_offsets + symtab_hdr->sh_info;
3877 off = local_plt_offsets[r_symndx];
3879 /* As for the local .got entry case, we use the last
3880 bit to record whether we've already initialised
3881 this local .plt entry. */
3886 local_plt_offsets[r_symndx] |= 1;
3893 if (bfd_link_pic (info))
3895 /* Output a dynamic IPLT relocation for this
3897 Elf_Internal_Rela outrel;
3899 asection *s = htab->etab.srelplt;
3901 outrel.r_offset = (off
3902 + htab->etab.splt->output_offset
3903 + htab->etab.splt->output_section->vma);
3904 outrel.r_info = ELF32_R_INFO (0, R_PARISC_IPLT);
3905 outrel.r_addend = relocation;
3907 loc += s->reloc_count++ * sizeof (Elf32_External_Rela);
3908 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
3912 bfd_put_32 (output_bfd,
3914 htab->etab.splt->contents + off);
3915 bfd_put_32 (output_bfd,
3916 elf_gp (htab->etab.splt->output_section->owner),
3917 htab->etab.splt->contents + off + 4);
3921 if (off >= (bfd_vma) -2)
3924 /* PLABELs contain function pointers. Relocation is to
3925 the entry for the function in the .plt. The magic +2
3926 offset signals to $$dyncall that the function pointer
3927 is in the .plt and thus has a gp pointer too.
3928 Exception: Undefined PLABELs should have a value of
3931 || (hh->eh.root.type != bfd_link_hash_undefweak
3932 && hh->eh.root.type != bfd_link_hash_undefined))
3935 + htab->etab.splt->output_offset
3936 + htab->etab.splt->output_section->vma
3943 case R_PARISC_DIR17F:
3944 case R_PARISC_DIR17R:
3945 case R_PARISC_DIR14F:
3946 case R_PARISC_DIR14R:
3947 case R_PARISC_DIR21L:
3948 case R_PARISC_DPREL14F:
3949 case R_PARISC_DPREL14R:
3950 case R_PARISC_DPREL21L:
3951 case R_PARISC_DIR32:
3952 if ((input_section->flags & SEC_ALLOC) == 0)
3955 /* The reloc types handled here and this conditional
3956 expression must match the code in ..check_relocs and
3957 allocate_dynrelocs. ie. We need exactly the same condition
3958 as in ..check_relocs, with some extra conditions (dynindx
3959 test in this case) to cater for relocs removed by
3960 allocate_dynrelocs. If you squint, the non-shared test
3961 here does indeed match the one in ..check_relocs, the
3962 difference being that here we test DEF_DYNAMIC as well as
3963 !DEF_REGULAR. All common syms end up with !DEF_REGULAR,
3964 which is why we can't use just that test here.
3965 Conversely, DEF_DYNAMIC can't be used in check_relocs as
3966 there all files have not been loaded. */
3967 if ((bfd_link_pic (info)
3969 || ELF_ST_VISIBILITY (hh->eh.other) == STV_DEFAULT
3970 || hh->eh.root.type != bfd_link_hash_undefweak)
3971 && (IS_ABSOLUTE_RELOC (r_type)
3972 || !SYMBOL_CALLS_LOCAL (info, &hh->eh)))
3973 || (!bfd_link_pic (info)
3975 && hh->eh.dynindx != -1
3976 && !hh->eh.non_got_ref
3977 && ((ELIMINATE_COPY_RELOCS
3978 && hh->eh.def_dynamic
3979 && !hh->eh.def_regular)
3980 || hh->eh.root.type == bfd_link_hash_undefweak
3981 || hh->eh.root.type == bfd_link_hash_undefined)))
3983 Elf_Internal_Rela outrel;
3988 /* When generating a shared object, these relocations
3989 are copied into the output file to be resolved at run
3992 outrel.r_addend = rela->r_addend;
3994 _bfd_elf_section_offset (output_bfd, info, input_section,
3996 skip = (outrel.r_offset == (bfd_vma) -1
3997 || outrel.r_offset == (bfd_vma) -2);
3998 outrel.r_offset += (input_section->output_offset
3999 + input_section->output_section->vma);
4003 memset (&outrel, 0, sizeof (outrel));
4006 && hh->eh.dynindx != -1
4008 || !IS_ABSOLUTE_RELOC (r_type)
4009 || !bfd_link_pic (info)
4010 || !SYMBOLIC_BIND (info, &hh->eh)
4011 || !hh->eh.def_regular))
4013 outrel.r_info = ELF32_R_INFO (hh->eh.dynindx, r_type);
4015 else /* It's a local symbol, or one marked to become local. */
4019 /* Add the absolute offset of the symbol. */
4020 outrel.r_addend += relocation;
4022 /* Global plabels need to be processed by the
4023 dynamic linker so that functions have at most one
4024 fptr. For this reason, we need to differentiate
4025 between global and local plabels, which we do by
4026 providing the function symbol for a global plabel
4027 reloc, and no symbol for local plabels. */
4030 && sym_sec->output_section != NULL
4031 && ! bfd_is_abs_section (sym_sec))
4035 osec = sym_sec->output_section;
4036 indx = elf_section_data (osec)->dynindx;
4039 osec = htab->etab.text_index_section;
4040 indx = elf_section_data (osec)->dynindx;
4042 BFD_ASSERT (indx != 0);
4044 /* We are turning this relocation into one
4045 against a section symbol, so subtract out the
4046 output section's address but not the offset
4047 of the input section in the output section. */
4048 outrel.r_addend -= osec->vma;
4051 outrel.r_info = ELF32_R_INFO (indx, r_type);
4053 sreloc = elf_section_data (input_section)->sreloc;
4057 loc = sreloc->contents;
4058 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela);
4059 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
4063 case R_PARISC_TLS_LDM21L:
4064 case R_PARISC_TLS_LDM14R:
4068 off = htab->tls_ldm_got.offset;
4073 Elf_Internal_Rela outrel;
4076 outrel.r_offset = (off
4077 + htab->etab.sgot->output_section->vma
4078 + htab->etab.sgot->output_offset);
4079 outrel.r_addend = 0;
4080 outrel.r_info = ELF32_R_INFO (0, R_PARISC_TLS_DTPMOD32);
4081 loc = htab->etab.srelgot->contents;
4082 loc += htab->etab.srelgot->reloc_count++ * sizeof (Elf32_External_Rela);
4084 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
4085 htab->tls_ldm_got.offset |= 1;
4088 /* Add the base of the GOT to the relocation value. */
4090 + htab->etab.sgot->output_offset
4091 + htab->etab.sgot->output_section->vma);
4096 case R_PARISC_TLS_LDO21L:
4097 case R_PARISC_TLS_LDO14R:
4098 relocation -= dtpoff_base (info);
4101 case R_PARISC_TLS_GD21L:
4102 case R_PARISC_TLS_GD14R:
4103 case R_PARISC_TLS_IE21L:
4104 case R_PARISC_TLS_IE14R:
4114 dyn = htab->etab.dynamic_sections_created;
4116 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn,
4117 bfd_link_pic (info),
4119 && (!bfd_link_pic (info)
4120 || !SYMBOL_REFERENCES_LOCAL (info, &hh->eh)))
4122 indx = hh->eh.dynindx;
4124 off = hh->eh.got.offset;
4125 tls_type = hh->tls_type;
4129 off = local_got_offsets[r_symndx];
4130 tls_type = hppa_elf_local_got_tls_type (input_bfd)[r_symndx];
4133 if (tls_type == GOT_UNKNOWN)
4140 bfd_boolean need_relocs = FALSE;
4141 Elf_Internal_Rela outrel;
4142 bfd_byte *loc = NULL;
4145 /* The GOT entries have not been initialized yet. Do it
4146 now, and emit any relocations. If both an IE GOT and a
4147 GD GOT are necessary, we emit the GD first. */
4149 if ((bfd_link_pic (info) || indx != 0)
4151 || ELF_ST_VISIBILITY (hh->eh.other) == STV_DEFAULT
4152 || hh->eh.root.type != bfd_link_hash_undefweak))
4155 loc = htab->etab.srelgot->contents;
4156 /* FIXME (CAO): Should this be reloc_count++ ? */
4157 loc += htab->etab.srelgot->reloc_count * sizeof (Elf32_External_Rela);
4160 if (tls_type & GOT_TLS_GD)
4164 outrel.r_offset = (cur_off
4165 + htab->etab.sgot->output_section->vma
4166 + htab->etab.sgot->output_offset);
4167 outrel.r_info = ELF32_R_INFO (indx,R_PARISC_TLS_DTPMOD32);
4168 outrel.r_addend = 0;
4169 bfd_put_32 (output_bfd, 0, htab->etab.sgot->contents + cur_off);
4170 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
4171 htab->etab.srelgot->reloc_count++;
4172 loc += sizeof (Elf32_External_Rela);
4175 bfd_put_32 (output_bfd, relocation - dtpoff_base (info),
4176 htab->etab.sgot->contents + cur_off + 4);
4179 bfd_put_32 (output_bfd, 0,
4180 htab->etab.sgot->contents + cur_off + 4);
4181 outrel.r_info = ELF32_R_INFO (indx, R_PARISC_TLS_DTPOFF32);
4182 outrel.r_offset += 4;
4183 bfd_elf32_swap_reloca_out (output_bfd, &outrel,loc);
4184 htab->etab.srelgot->reloc_count++;
4185 loc += sizeof (Elf32_External_Rela);
4190 /* If we are not emitting relocations for a
4191 general dynamic reference, then we must be in a
4192 static link or an executable link with the
4193 symbol binding locally. Mark it as belonging
4194 to module 1, the executable. */
4195 bfd_put_32 (output_bfd, 1,
4196 htab->etab.sgot->contents + cur_off);
4197 bfd_put_32 (output_bfd, relocation - dtpoff_base (info),
4198 htab->etab.sgot->contents + cur_off + 4);
4205 if (tls_type & GOT_TLS_IE)
4209 outrel.r_offset = (cur_off
4210 + htab->etab.sgot->output_section->vma
4211 + htab->etab.sgot->output_offset);
4212 outrel.r_info = ELF32_R_INFO (indx, R_PARISC_TLS_TPREL32);
4215 outrel.r_addend = relocation - dtpoff_base (info);
4217 outrel.r_addend = 0;
4219 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
4220 htab->etab.srelgot->reloc_count++;
4221 loc += sizeof (Elf32_External_Rela);
4224 bfd_put_32 (output_bfd, tpoff (info, relocation),
4225 htab->etab.sgot->contents + cur_off);
4231 hh->eh.got.offset |= 1;
4233 local_got_offsets[r_symndx] |= 1;
4236 if ((tls_type & GOT_TLS_GD)
4237 && r_type != R_PARISC_TLS_GD21L
4238 && r_type != R_PARISC_TLS_GD14R)
4239 off += 2 * GOT_ENTRY_SIZE;
4241 /* Add the base of the GOT to the relocation value. */
4243 + htab->etab.sgot->output_offset
4244 + htab->etab.sgot->output_section->vma);
4249 case R_PARISC_TLS_LE21L:
4250 case R_PARISC_TLS_LE14R:
4252 relocation = tpoff (info, relocation);
4261 rstatus = final_link_relocate (input_section, contents, rela, relocation,
4262 htab, sym_sec, hh, info);
4264 if (rstatus == bfd_reloc_ok)
4268 sym_name = hh_name (hh);
4271 sym_name = bfd_elf_string_from_elf_section (input_bfd,
4272 symtab_hdr->sh_link,
4274 if (sym_name == NULL)
4276 if (*sym_name == '\0')
4277 sym_name = bfd_section_name (input_bfd, sym_sec);
4280 howto = elf_hppa_howto_table + r_type;
4282 if (rstatus == bfd_reloc_undefined || rstatus == bfd_reloc_notsupported)
4284 if (rstatus == bfd_reloc_notsupported || !warned_undef)
4287 /* xgettext:c-format */
4288 (_("%B(%A+%#Lx): cannot handle %s for %s"),
4294 bfd_set_error (bfd_error_bad_value);
4299 (*info->callbacks->reloc_overflow)
4300 (info, (hh ? &hh->eh.root : NULL), sym_name, howto->name,
4301 (bfd_vma) 0, input_bfd, input_section, rela->r_offset);
4307 /* Finish up dynamic symbol handling. We set the contents of various
4308 dynamic sections here. */
4311 elf32_hppa_finish_dynamic_symbol (bfd *output_bfd,
4312 struct bfd_link_info *info,
4313 struct elf_link_hash_entry *eh,
4314 Elf_Internal_Sym *sym)
4316 struct elf32_hppa_link_hash_table *htab;
4317 Elf_Internal_Rela rela;
4320 htab = hppa_link_hash_table (info);
4324 if (eh->plt.offset != (bfd_vma) -1)
4328 if (eh->plt.offset & 1)
4331 /* This symbol has an entry in the procedure linkage table. Set
4334 The format of a plt entry is
4339 if (eh->root.type == bfd_link_hash_defined
4340 || eh->root.type == bfd_link_hash_defweak)
4342 value = eh->root.u.def.value;
4343 if (eh->root.u.def.section->output_section != NULL)
4344 value += (eh->root.u.def.section->output_offset
4345 + eh->root.u.def.section->output_section->vma);
4348 /* Create a dynamic IPLT relocation for this entry. */
4349 rela.r_offset = (eh->plt.offset
4350 + htab->etab.splt->output_offset
4351 + htab->etab.splt->output_section->vma);
4352 if (eh->dynindx != -1)
4354 rela.r_info = ELF32_R_INFO (eh->dynindx, R_PARISC_IPLT);
4359 /* This symbol has been marked to become local, and is
4360 used by a plabel so must be kept in the .plt. */
4361 rela.r_info = ELF32_R_INFO (0, R_PARISC_IPLT);
4362 rela.r_addend = value;
4365 loc = htab->etab.srelplt->contents;
4366 loc += htab->etab.srelplt->reloc_count++ * sizeof (Elf32_External_Rela);
4367 bfd_elf32_swap_reloca_out (htab->etab.splt->output_section->owner, &rela, loc);
4369 if (!eh->def_regular)
4371 /* Mark the symbol as undefined, rather than as defined in
4372 the .plt section. Leave the value alone. */
4373 sym->st_shndx = SHN_UNDEF;
4377 if (eh->got.offset != (bfd_vma) -1
4378 && (hppa_elf_hash_entry (eh)->tls_type & GOT_TLS_GD) == 0
4379 && (hppa_elf_hash_entry (eh)->tls_type & GOT_TLS_IE) == 0)
4381 /* This symbol has an entry in the global offset table. Set it
4384 rela.r_offset = ((eh->got.offset &~ (bfd_vma) 1)
4385 + htab->etab.sgot->output_offset
4386 + htab->etab.sgot->output_section->vma);
4388 /* If this is a -Bsymbolic link and the symbol is defined
4389 locally or was forced to be local because of a version file,
4390 we just want to emit a RELATIVE reloc. The entry in the
4391 global offset table will already have been initialized in the
4392 relocate_section function. */
4393 if (bfd_link_pic (info)
4394 && (SYMBOLIC_BIND (info, eh) || eh->dynindx == -1)
4397 rela.r_info = ELF32_R_INFO (0, R_PARISC_DIR32);
4398 rela.r_addend = (eh->root.u.def.value
4399 + eh->root.u.def.section->output_offset
4400 + eh->root.u.def.section->output_section->vma);
4404 if ((eh->got.offset & 1) != 0)
4407 bfd_put_32 (output_bfd, 0, htab->etab.sgot->contents + (eh->got.offset & ~1));
4408 rela.r_info = ELF32_R_INFO (eh->dynindx, R_PARISC_DIR32);
4412 loc = htab->etab.srelgot->contents;
4413 loc += htab->etab.srelgot->reloc_count++ * sizeof (Elf32_External_Rela);
4414 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
4421 /* This symbol needs a copy reloc. Set it up. */
4423 if (! (eh->dynindx != -1
4424 && (eh->root.type == bfd_link_hash_defined
4425 || eh->root.type == bfd_link_hash_defweak)))
4428 rela.r_offset = (eh->root.u.def.value
4429 + eh->root.u.def.section->output_offset
4430 + eh->root.u.def.section->output_section->vma);
4432 rela.r_info = ELF32_R_INFO (eh->dynindx, R_PARISC_COPY);
4433 if (eh->root.u.def.section == htab->etab.sdynrelro)
4434 sec = htab->etab.sreldynrelro;
4436 sec = htab->etab.srelbss;
4437 loc = sec->contents + sec->reloc_count++ * sizeof (Elf32_External_Rela);
4438 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
4441 /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. */
4442 if (eh == htab->etab.hdynamic || eh == htab->etab.hgot)
4444 sym->st_shndx = SHN_ABS;
4450 /* Used to decide how to sort relocs in an optimal manner for the
4451 dynamic linker, before writing them out. */
4453 static enum elf_reloc_type_class
4454 elf32_hppa_reloc_type_class (const struct bfd_link_info *info ATTRIBUTE_UNUSED,
4455 const asection *rel_sec ATTRIBUTE_UNUSED,
4456 const Elf_Internal_Rela *rela)
4458 /* Handle TLS relocs first; we don't want them to be marked
4459 relative by the "if (ELF32_R_SYM (rela->r_info) == STN_UNDEF)"
4461 switch ((int) ELF32_R_TYPE (rela->r_info))
4463 case R_PARISC_TLS_DTPMOD32:
4464 case R_PARISC_TLS_DTPOFF32:
4465 case R_PARISC_TLS_TPREL32:
4466 return reloc_class_normal;
4469 if (ELF32_R_SYM (rela->r_info) == STN_UNDEF)
4470 return reloc_class_relative;
4472 switch ((int) ELF32_R_TYPE (rela->r_info))
4475 return reloc_class_plt;
4477 return reloc_class_copy;
4479 return reloc_class_normal;
4483 /* Finish up the dynamic sections. */
4486 elf32_hppa_finish_dynamic_sections (bfd *output_bfd,
4487 struct bfd_link_info *info)
4490 struct elf32_hppa_link_hash_table *htab;
4494 htab = hppa_link_hash_table (info);
4498 dynobj = htab->etab.dynobj;
4500 sgot = htab->etab.sgot;
4501 /* A broken linker script might have discarded the dynamic sections.
4502 Catch this here so that we do not seg-fault later on. */
4503 if (sgot != NULL && bfd_is_abs_section (sgot->output_section))
4506 sdyn = bfd_get_linker_section (dynobj, ".dynamic");
4508 if (htab->etab.dynamic_sections_created)
4510 Elf32_External_Dyn *dyncon, *dynconend;
4515 dyncon = (Elf32_External_Dyn *) sdyn->contents;
4516 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
4517 for (; dyncon < dynconend; dyncon++)
4519 Elf_Internal_Dyn dyn;
4522 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
4530 /* Use PLTGOT to set the GOT register. */
4531 dyn.d_un.d_ptr = elf_gp (output_bfd);
4535 s = htab->etab.srelplt;
4536 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
4540 s = htab->etab.srelplt;
4541 dyn.d_un.d_val = s->size;
4545 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
4549 if (sgot != NULL && sgot->size != 0)
4551 /* Fill in the first entry in the global offset table.
4552 We use it to point to our dynamic section, if we have one. */
4553 bfd_put_32 (output_bfd,
4554 sdyn ? sdyn->output_section->vma + sdyn->output_offset : 0,
4557 /* The second entry is reserved for use by the dynamic linker. */
4558 memset (sgot->contents + GOT_ENTRY_SIZE, 0, GOT_ENTRY_SIZE);
4560 /* Set .got entry size. */
4561 elf_section_data (sgot->output_section)
4562 ->this_hdr.sh_entsize = GOT_ENTRY_SIZE;
4565 if (htab->etab.splt != NULL && htab->etab.splt->size != 0)
4567 /* Set plt entry size to 0 instead of PLT_ENTRY_SIZE, since we add the
4568 plt stubs and as such the section does not hold a table of fixed-size
4570 elf_section_data (htab->etab.splt->output_section)->this_hdr.sh_entsize = 0;
4572 if (htab->need_plt_stub)
4574 /* Set up the .plt stub. */
4575 memcpy (htab->etab.splt->contents
4576 + htab->etab.splt->size - sizeof (plt_stub),
4577 plt_stub, sizeof (plt_stub));
4579 if ((htab->etab.splt->output_offset
4580 + htab->etab.splt->output_section->vma
4581 + htab->etab.splt->size)
4582 != (sgot->output_offset
4583 + sgot->output_section->vma))
4586 (_(".got section not immediately after .plt section"));
4595 /* Called when writing out an object file to decide the type of a
4598 elf32_hppa_elf_get_symbol_type (Elf_Internal_Sym *elf_sym, int type)
4600 if (ELF_ST_TYPE (elf_sym->st_info) == STT_PARISC_MILLI)
4601 return STT_PARISC_MILLI;
4606 /* Misc BFD support code. */
4607 #define bfd_elf32_bfd_is_local_label_name elf_hppa_is_local_label_name
4608 #define bfd_elf32_bfd_reloc_type_lookup elf_hppa_reloc_type_lookup
4609 #define bfd_elf32_bfd_reloc_name_lookup elf_hppa_reloc_name_lookup
4610 #define elf_info_to_howto elf_hppa_info_to_howto
4611 #define elf_info_to_howto_rel elf_hppa_info_to_howto_rel
4613 /* Stuff for the BFD linker. */
4614 #define bfd_elf32_bfd_final_link elf32_hppa_final_link
4615 #define bfd_elf32_bfd_link_hash_table_create elf32_hppa_link_hash_table_create
4616 #define elf_backend_adjust_dynamic_symbol elf32_hppa_adjust_dynamic_symbol
4617 #define elf_backend_copy_indirect_symbol elf32_hppa_copy_indirect_symbol
4618 #define elf_backend_check_relocs elf32_hppa_check_relocs
4619 #define elf_backend_create_dynamic_sections elf32_hppa_create_dynamic_sections
4620 #define elf_backend_fake_sections elf_hppa_fake_sections
4621 #define elf_backend_relocate_section elf32_hppa_relocate_section
4622 #define elf_backend_hide_symbol elf32_hppa_hide_symbol
4623 #define elf_backend_finish_dynamic_symbol elf32_hppa_finish_dynamic_symbol
4624 #define elf_backend_finish_dynamic_sections elf32_hppa_finish_dynamic_sections
4625 #define elf_backend_size_dynamic_sections elf32_hppa_size_dynamic_sections
4626 #define elf_backend_init_index_section _bfd_elf_init_1_index_section
4627 #define elf_backend_gc_mark_hook elf32_hppa_gc_mark_hook
4628 #define elf_backend_gc_sweep_hook elf32_hppa_gc_sweep_hook
4629 #define elf_backend_grok_prstatus elf32_hppa_grok_prstatus
4630 #define elf_backend_grok_psinfo elf32_hppa_grok_psinfo
4631 #define elf_backend_object_p elf32_hppa_object_p
4632 #define elf_backend_final_write_processing elf_hppa_final_write_processing
4633 #define elf_backend_get_symbol_type elf32_hppa_elf_get_symbol_type
4634 #define elf_backend_reloc_type_class elf32_hppa_reloc_type_class
4635 #define elf_backend_action_discarded elf_hppa_action_discarded
4637 #define elf_backend_can_gc_sections 1
4638 #define elf_backend_can_refcount 1
4639 #define elf_backend_plt_alignment 2
4640 #define elf_backend_want_got_plt 0
4641 #define elf_backend_plt_readonly 0
4642 #define elf_backend_want_plt_sym 0
4643 #define elf_backend_got_header_size 8
4644 #define elf_backend_want_dynrelro 1
4645 #define elf_backend_rela_normal 1
4646 #define elf_backend_dtrel_excludes_plt 1
4647 #define elf_backend_no_page_alias 1
4649 #define TARGET_BIG_SYM hppa_elf32_vec
4650 #define TARGET_BIG_NAME "elf32-hppa"
4651 #define ELF_ARCH bfd_arch_hppa
4652 #define ELF_TARGET_ID HPPA32_ELF_DATA
4653 #define ELF_MACHINE_CODE EM_PARISC
4654 #define ELF_MAXPAGESIZE 0x1000
4655 #define ELF_OSABI ELFOSABI_HPUX
4656 #define elf32_bed elf32_hppa_hpux_bed
4658 #include "elf32-target.h"
4660 #undef TARGET_BIG_SYM
4661 #define TARGET_BIG_SYM hppa_elf32_linux_vec
4662 #undef TARGET_BIG_NAME
4663 #define TARGET_BIG_NAME "elf32-hppa-linux"
4665 #define ELF_OSABI ELFOSABI_GNU
4667 #define elf32_bed elf32_hppa_linux_bed
4669 #include "elf32-target.h"
4671 #undef TARGET_BIG_SYM
4672 #define TARGET_BIG_SYM hppa_elf32_nbsd_vec
4673 #undef TARGET_BIG_NAME
4674 #define TARGET_BIG_NAME "elf32-hppa-netbsd"
4676 #define ELF_OSABI ELFOSABI_NETBSD
4678 #define elf32_bed elf32_hppa_netbsd_bed
4680 #include "elf32-target.h"