1 /* BFD back-end for HP PA-RISC ELF files.
2 Copyright 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1999, 2000, 2001
3 Free Software Foundation, Inc.
6 Center for Software Science
7 Department of Computer Science
9 Largely rewritten by Alan Modra <alan@linuxcare.com.au>
11 This file is part of BFD, the Binary File Descriptor library.
13 This program is free software; you can redistribute it and/or modify
14 it under the terms of the GNU General Public License as published by
15 the Free Software Foundation; either version 2 of the License, or
16 (at your option) any later version.
18 This program is distributed in the hope that it will be useful,
19 but WITHOUT ANY WARRANTY; without even the implied warranty of
20 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
21 GNU General Public License for more details.
23 You should have received a copy of the GNU General Public License
24 along with this program; if not, write to the Free Software
25 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
33 #include "elf32-hppa.h"
36 #include "elf32-hppa.h"
38 /* In order to gain some understanding of code in this file without
39 knowing all the intricate details of the linker, note the
42 Functions named elf32_hppa_* are called by external routines, other
43 functions are only called locally. elf32_hppa_* functions appear
44 in this file more or less in the order in which they are called
45 from external routines. eg. elf32_hppa_check_relocs is called
46 early in the link process, elf32_hppa_finish_dynamic_sections is
47 one of the last functions. */
49 /* We use two hash tables to hold information for linking PA ELF objects.
51 The first is the elf32_hppa_link_hash_table which is derived
52 from the standard ELF linker hash table. We use this as a place to
53 attach other hash tables and static information.
55 The second is the stub hash table which is derived from the
56 base BFD hash table. The stub hash table holds the information
57 necessary to build the linker stubs during a link.
59 There are a number of different stubs generated by the linker.
67 : addil LR'X - ($PIC_pcrel$0 - 4),%r1
68 : be,n RR'X - ($PIC_pcrel$0 - 8)(%sr4,%r1)
70 Import stub to call shared library routine from normal object file
71 (single sub-space version)
72 : addil LR'lt_ptr+ltoff,%dp ; get procedure entry point
73 : ldw RR'lt_ptr+ltoff(%r1),%r21
75 : ldw RR'lt_ptr+ltoff+4(%r1),%r19 ; get new dlt value.
77 Import stub to call shared library routine from shared library
78 (single sub-space version)
79 : addil LR'ltoff,%r19 ; get procedure entry point
80 : ldw RR'ltoff(%r1),%r21
82 : ldw RR'ltoff+4(%r1),%r19 ; get new dlt value.
84 Import stub to call shared library routine from normal object file
85 (multiple sub-space support)
86 : addil LR'lt_ptr+ltoff,%dp ; get procedure entry point
87 : ldw RR'lt_ptr+ltoff(%r1),%r21
88 : ldw RR'lt_ptr+ltoff+4(%r1),%r19 ; get new dlt value.
91 : be 0(%sr0,%r21) ; branch to target
92 : stw %rp,-24(%sp) ; save rp
94 Import stub to call shared library routine from shared library
95 (multiple sub-space support)
96 : addil LR'ltoff,%r19 ; get procedure entry point
97 : ldw RR'ltoff(%r1),%r21
98 : ldw RR'ltoff+4(%r1),%r19 ; get new dlt value.
101 : be 0(%sr0,%r21) ; branch to target
102 : stw %rp,-24(%sp) ; save rp
104 Export stub to return from shared lib routine (multiple sub-space support)
105 One of these is created for each exported procedure in a shared
106 library (and stored in the shared lib). Shared lib routines are
107 called via the first instruction in the export stub so that we can
108 do an inter-space return. Not required for single sub-space.
109 : bl,n X,%rp ; trap the return
111 : ldw -24(%sp),%rp ; restore the original rp
114 : be,n 0(%sr0,%rp) ; inter-space return */
116 #define PLT_ENTRY_SIZE 8
117 #define PLABEL_PLT_ENTRY_SIZE PLT_ENTRY_SIZE
118 #define GOT_ENTRY_SIZE 4
119 #define ELF_DYNAMIC_INTERPRETER "/lib/ld.so.1"
121 static const bfd_byte plt_stub[] =
123 0x0e, 0x80, 0x10, 0x96, /* 1: ldw 0(%r20),%r22 */
124 0xea, 0xc0, 0xc0, 0x00, /* bv %r0(%r22) */
125 0x0e, 0x88, 0x10, 0x95, /* ldw 4(%r20),%r21 */
126 #define PLT_STUB_ENTRY (3*4)
127 0xea, 0x9f, 0x1f, 0xdd, /* b,l 1b,%r20 */
128 0xd6, 0x80, 0x1c, 0x1e, /* depi 0,31,2,%r20 */
129 0x00, 0xc0, 0xff, 0xee, /* 9: .word fixup_func */
130 0xde, 0xad, 0xbe, 0xef /* .word fixup_ltp */
133 /* Section name for stubs is the associated section name plus this
135 #define STUB_SUFFIX ".stub"
137 /* Setting the following non-zero makes all long branch stubs
138 generated during a shared link of the PIC variety. This saves on
139 relocs, but costs one extra instruction per stub. */
140 #ifndef LONG_BRANCH_PIC_IN_SHLIB
141 #define LONG_BRANCH_PIC_IN_SHLIB 1
144 /* Set this non-zero to use import stubs instead of long branch stubs
145 where a .plt entry exists for the symbol. This is a fairly useless
146 option as import stubs are bigger than PIC long branch stubs. */
147 #ifndef LONG_BRANCH_VIA_PLT
148 #define LONG_BRANCH_VIA_PLT 0
151 /* We don't need to copy any PC- or GP-relative dynamic relocs into a
152 shared object's dynamic section. All the relocs of the limited
153 class we are interested in, are absolute. See check_relocs. */
154 #ifndef IS_ABSOLUTE_RELOC
155 #define IS_ABSOLUTE_RELOC(r_type) 1
158 enum elf32_hppa_stub_type {
159 hppa_stub_long_branch,
160 hppa_stub_long_branch_shared,
162 hppa_stub_import_shared,
167 struct elf32_hppa_stub_hash_entry {
169 /* Base hash table entry structure. */
170 struct bfd_hash_entry root;
172 /* The stub section. */
175 #if ! LONG_BRANCH_PIC_IN_SHLIB
176 /* It's associated reloc section. */
180 /* Offset within stub_sec of the beginning of this stub. */
183 /* Given the symbol's value and its section we can determine its final
184 value when building the stubs (so the stub knows where to jump. */
185 bfd_vma target_value;
186 asection *target_section;
188 enum elf32_hppa_stub_type stub_type;
190 /* The symbol table entry, if any, that this was derived from. */
191 struct elf32_hppa_link_hash_entry *h;
193 /* Where this stub is being called from, or, in the case of combined
194 stub sections, the first input section in the group. */
198 struct elf32_hppa_link_hash_entry {
200 struct elf_link_hash_entry elf;
202 /* A pointer to the most recently used stub hash entry against this
204 struct elf32_hppa_stub_hash_entry *stub_cache;
206 #if ! LONG_BRANCH_PIC_IN_SHLIB
207 /* Used to track whether we have allocated space for a long branch
208 stub relocation for this symbol in the given section. */
209 asection *stub_reloc_sec;
212 /* Used to count relocations for delayed sizing of relocation
214 struct elf32_hppa_dyn_reloc_entry {
216 /* Next relocation in the chain. */
217 struct elf32_hppa_dyn_reloc_entry *next;
219 /* The section in dynobj. */
222 /* Number of relocs copied in this section. */
226 /* Set during a static link if we detect a function is PIC. */
227 unsigned int maybe_pic_call:1;
229 /* Set if the only reason we need a .plt entry is for a non-PIC to
230 PIC function call. */
231 unsigned int pic_call:1;
233 /* Set if this symbol is used by a plabel reloc. */
234 unsigned int plabel:1;
236 /* Set if this symbol is an init or fini function and thus should
237 use an absolute reloc. */
238 unsigned int plt_abs:1;
241 struct elf32_hppa_link_hash_table {
243 /* The main hash table. */
244 struct elf_link_hash_table root;
246 /* The stub hash table. */
247 struct bfd_hash_table stub_hash_table;
249 /* Linker stub bfd. */
252 /* Linker call-backs. */
253 asection * (*add_stub_section) PARAMS ((const char *, asection *));
254 void (*layout_sections_again) PARAMS ((void));
256 /* Array to keep track of which stub sections have been created, and
257 information on stub grouping. */
259 /* This is the section to which stubs in the group will be
262 /* The stub section. */
264 #if ! LONG_BRANCH_PIC_IN_SHLIB
265 /* The stub section's reloc section. */
270 /* Short-cuts to get to dynamic linker sections. */
278 /* Used during a final link to store the base of the text and data
279 segments so that we can perform SEGREL relocations. */
280 bfd_vma text_segment_base;
281 bfd_vma data_segment_base;
283 /* Whether we support multiple sub-spaces for shared libs. */
284 unsigned int multi_subspace:1;
286 /* Flags set when PCREL12F and PCREL17F branches detected. Used to
287 select suitable defaults for the stub group size. */
288 unsigned int has_12bit_branch:1;
289 unsigned int has_17bit_branch:1;
291 /* Set if we need a .plt stub to support lazy dynamic linking. */
292 unsigned int need_plt_stub:1;
295 /* Various hash macros and functions. */
296 #define hppa_link_hash_table(p) \
297 ((struct elf32_hppa_link_hash_table *) ((p)->hash))
299 #define hppa_stub_hash_lookup(table, string, create, copy) \
300 ((struct elf32_hppa_stub_hash_entry *) \
301 bfd_hash_lookup ((table), (string), (create), (copy)))
303 static struct bfd_hash_entry *stub_hash_newfunc
304 PARAMS ((struct bfd_hash_entry *, struct bfd_hash_table *, const char *));
306 static struct bfd_hash_entry *hppa_link_hash_newfunc
307 PARAMS ((struct bfd_hash_entry *, struct bfd_hash_table *, const char *));
309 static struct bfd_link_hash_table *elf32_hppa_link_hash_table_create
312 /* Stub handling functions. */
313 static char *hppa_stub_name
314 PARAMS ((const asection *, const asection *,
315 const struct elf32_hppa_link_hash_entry *,
316 const Elf_Internal_Rela *));
318 static struct elf32_hppa_stub_hash_entry *hppa_get_stub_entry
319 PARAMS ((const asection *, const asection *,
320 struct elf32_hppa_link_hash_entry *,
321 const Elf_Internal_Rela *,
322 struct elf32_hppa_link_hash_table *));
324 static struct elf32_hppa_stub_hash_entry *hppa_add_stub
325 PARAMS ((const char *, asection *, struct elf32_hppa_link_hash_table *));
327 static enum elf32_hppa_stub_type hppa_type_of_stub
328 PARAMS ((asection *, const Elf_Internal_Rela *,
329 struct elf32_hppa_link_hash_entry *, bfd_vma));
331 static boolean hppa_build_one_stub
332 PARAMS ((struct bfd_hash_entry *, PTR));
334 static boolean hppa_size_one_stub
335 PARAMS ((struct bfd_hash_entry *, PTR));
337 /* BFD and elf backend functions. */
338 static boolean elf32_hppa_object_p PARAMS ((bfd *));
340 static boolean elf32_hppa_add_symbol_hook
341 PARAMS ((bfd *, struct bfd_link_info *, const Elf_Internal_Sym *,
342 const char **, flagword *, asection **, bfd_vma *));
344 static boolean elf32_hppa_create_dynamic_sections
345 PARAMS ((bfd *, struct bfd_link_info *));
347 static boolean elf32_hppa_check_relocs
348 PARAMS ((bfd *, struct bfd_link_info *,
349 asection *, const Elf_Internal_Rela *));
351 static asection *elf32_hppa_gc_mark_hook
352 PARAMS ((bfd *, struct bfd_link_info *, Elf_Internal_Rela *,
353 struct elf_link_hash_entry *, Elf_Internal_Sym *));
355 static boolean elf32_hppa_gc_sweep_hook
356 PARAMS ((bfd *, struct bfd_link_info *,
357 asection *, const Elf_Internal_Rela *));
359 static void elf32_hppa_hide_symbol
360 PARAMS ((struct bfd_link_info *, struct elf_link_hash_entry *));
362 static boolean elf32_hppa_adjust_dynamic_symbol
363 PARAMS ((struct bfd_link_info *, struct elf_link_hash_entry *));
365 static boolean hppa_handle_PIC_calls
366 PARAMS ((struct elf_link_hash_entry *, PTR));
368 static boolean allocate_plt_and_got_and_discard_relocs
369 PARAMS ((struct elf_link_hash_entry *, PTR));
371 static boolean clobber_millicode_symbols
372 PARAMS ((struct elf_link_hash_entry *, struct bfd_link_info *));
374 static boolean elf32_hppa_size_dynamic_sections
375 PARAMS ((bfd *, struct bfd_link_info *));
377 static boolean elf32_hppa_final_link
378 PARAMS ((bfd *, struct bfd_link_info *));
380 static void hppa_record_segment_addr
381 PARAMS ((bfd *, asection *, PTR));
383 static bfd_reloc_status_type final_link_relocate
384 PARAMS ((asection *, bfd_byte *, const Elf_Internal_Rela *,
385 bfd_vma, struct elf32_hppa_link_hash_table *, asection *,
386 struct elf32_hppa_link_hash_entry *));
388 static boolean elf32_hppa_relocate_section
389 PARAMS ((bfd *, struct bfd_link_info *, bfd *, asection *,
390 bfd_byte *, Elf_Internal_Rela *, Elf_Internal_Sym *, asection **));
392 static int hppa_unwind_entry_compare
393 PARAMS ((const PTR, const PTR));
395 static boolean elf32_hppa_finish_dynamic_symbol
396 PARAMS ((bfd *, struct bfd_link_info *,
397 struct elf_link_hash_entry *, Elf_Internal_Sym *));
399 static boolean elf32_hppa_finish_dynamic_sections
400 PARAMS ((bfd *, struct bfd_link_info *));
402 static void elf32_hppa_post_process_headers
403 PARAMS ((bfd *, struct bfd_link_info *));
405 static int elf32_hppa_elf_get_symbol_type
406 PARAMS ((Elf_Internal_Sym *, int));
408 /* Assorted hash table functions. */
410 /* Initialize an entry in the stub hash table. */
412 static struct bfd_hash_entry *
413 stub_hash_newfunc (entry, table, string)
414 struct bfd_hash_entry *entry;
415 struct bfd_hash_table *table;
418 struct elf32_hppa_stub_hash_entry *ret;
420 ret = (struct elf32_hppa_stub_hash_entry *) entry;
422 /* Allocate the structure if it has not already been allocated by a
426 ret = ((struct elf32_hppa_stub_hash_entry *)
427 bfd_hash_allocate (table,
428 sizeof (struct elf32_hppa_stub_hash_entry)));
433 /* Call the allocation method of the superclass. */
434 ret = ((struct elf32_hppa_stub_hash_entry *)
435 bfd_hash_newfunc ((struct bfd_hash_entry *) ret, table, string));
439 /* Initialize the local fields. */
440 ret->stub_sec = NULL;
441 #if ! LONG_BRANCH_PIC_IN_SHLIB
442 ret->reloc_sec = NULL;
444 ret->stub_offset = 0;
445 ret->target_value = 0;
446 ret->target_section = NULL;
447 ret->stub_type = hppa_stub_long_branch;
452 return (struct bfd_hash_entry *) ret;
455 /* Initialize an entry in the link hash table. */
457 static struct bfd_hash_entry *
458 hppa_link_hash_newfunc (entry, table, string)
459 struct bfd_hash_entry *entry;
460 struct bfd_hash_table *table;
463 struct elf32_hppa_link_hash_entry *ret;
465 ret = (struct elf32_hppa_link_hash_entry *) entry;
467 /* Allocate the structure if it has not already been allocated by a
471 ret = ((struct elf32_hppa_link_hash_entry *)
472 bfd_hash_allocate (table,
473 sizeof (struct elf32_hppa_link_hash_entry)));
478 /* Call the allocation method of the superclass. */
479 ret = ((struct elf32_hppa_link_hash_entry *)
480 _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret,
485 /* Initialize the local fields. */
486 #if ! LONG_BRANCH_PIC_IN_SHLIB
487 ret->stub_reloc_sec = NULL;
489 ret->stub_cache = NULL;
490 ret->reloc_entries = NULL;
491 ret->maybe_pic_call = 0;
497 return (struct bfd_hash_entry *) ret;
500 /* Create the derived linker hash table. The PA ELF port uses the derived
501 hash table to keep information specific to the PA ELF linker (without
502 using static variables). */
504 static struct bfd_link_hash_table *
505 elf32_hppa_link_hash_table_create (abfd)
508 struct elf32_hppa_link_hash_table *ret;
510 ret = ((struct elf32_hppa_link_hash_table *) bfd_alloc (abfd, sizeof (*ret)));
514 if (!_bfd_elf_link_hash_table_init (&ret->root, abfd, hppa_link_hash_newfunc))
516 bfd_release (abfd, ret);
520 /* Init the stub hash table too. */
521 if (!bfd_hash_table_init (&ret->stub_hash_table, stub_hash_newfunc))
524 ret->stub_bfd = NULL;
525 ret->add_stub_section = NULL;
526 ret->layout_sections_again = NULL;
527 ret->stub_group = NULL;
534 ret->text_segment_base = (bfd_vma) -1;
535 ret->data_segment_base = (bfd_vma) -1;
536 ret->multi_subspace = 0;
537 ret->has_12bit_branch = 0;
538 ret->has_17bit_branch = 0;
539 ret->need_plt_stub = 0;
541 return &ret->root.root;
544 /* Build a name for an entry in the stub hash table. */
547 hppa_stub_name (input_section, sym_sec, hash, rel)
548 const asection *input_section;
549 const asection *sym_sec;
550 const struct elf32_hppa_link_hash_entry *hash;
551 const Elf_Internal_Rela *rel;
558 len = 8 + 1 + strlen (hash->elf.root.root.string) + 1 + 8 + 1;
559 stub_name = bfd_malloc (len);
560 if (stub_name != NULL)
562 sprintf (stub_name, "%08x_%s+%x",
563 input_section->id & 0xffffffff,
564 hash->elf.root.root.string,
565 (int) rel->r_addend & 0xffffffff);
570 len = 8 + 1 + 8 + 1 + 8 + 1 + 8 + 1;
571 stub_name = bfd_malloc (len);
572 if (stub_name != NULL)
574 sprintf (stub_name, "%08x_%x:%x+%x",
575 input_section->id & 0xffffffff,
576 sym_sec->id & 0xffffffff,
577 (int) ELF32_R_SYM (rel->r_info) & 0xffffffff,
578 (int) rel->r_addend & 0xffffffff);
584 /* Look up an entry in the stub hash. Stub entries are cached because
585 creating the stub name takes a bit of time. */
587 static struct elf32_hppa_stub_hash_entry *
588 hppa_get_stub_entry (input_section, sym_sec, hash, rel, hplink)
589 const asection *input_section;
590 const asection *sym_sec;
591 struct elf32_hppa_link_hash_entry *hash;
592 const Elf_Internal_Rela *rel;
593 struct elf32_hppa_link_hash_table *hplink;
595 struct elf32_hppa_stub_hash_entry *stub_entry;
596 const asection *id_sec;
598 /* If this input section is part of a group of sections sharing one
599 stub section, then use the id of the first section in the group.
600 Stub names need to include a section id, as there may well be
601 more than one stub used to reach say, printf, and we need to
602 distinguish between them. */
603 id_sec = hplink->stub_group[input_section->id].link_sec;
605 if (hash != NULL && hash->stub_cache != NULL
606 && hash->stub_cache->h == hash
607 && hash->stub_cache->id_sec == id_sec)
609 stub_entry = hash->stub_cache;
615 stub_name = hppa_stub_name (id_sec, sym_sec, hash, rel);
616 if (stub_name == NULL)
619 stub_entry = hppa_stub_hash_lookup (&hplink->stub_hash_table,
620 stub_name, false, false);
621 if (stub_entry == NULL)
623 if (hash == NULL || hash->elf.root.type != bfd_link_hash_undefweak)
624 (*_bfd_error_handler) (_("%s(%s+0x%lx): cannot find stub entry %s"),
625 bfd_get_filename (input_section->owner),
627 (long) rel->r_offset,
633 hash->stub_cache = stub_entry;
642 /* Add a new stub entry to the stub hash. Not all fields of the new
643 stub entry are initialised. */
645 static struct elf32_hppa_stub_hash_entry *
646 hppa_add_stub (stub_name, section, hplink)
647 const char *stub_name;
649 struct elf32_hppa_link_hash_table *hplink;
653 struct elf32_hppa_stub_hash_entry *stub_entry;
655 link_sec = hplink->stub_group[section->id].link_sec;
656 stub_sec = hplink->stub_group[section->id].stub_sec;
657 if (stub_sec == NULL)
659 stub_sec = hplink->stub_group[link_sec->id].stub_sec;
660 if (stub_sec == NULL)
665 len = strlen (link_sec->name) + sizeof (STUB_SUFFIX);
666 s_name = bfd_alloc (hplink->stub_bfd, len);
670 strcpy (s_name, link_sec->name);
671 strcpy (s_name + len - sizeof (STUB_SUFFIX), STUB_SUFFIX);
672 stub_sec = (*hplink->add_stub_section) (s_name, link_sec);
673 if (stub_sec == NULL)
675 hplink->stub_group[link_sec->id].stub_sec = stub_sec;
677 hplink->stub_group[section->id].stub_sec = stub_sec;
680 /* Enter this entry into the linker stub hash table. */
681 stub_entry = hppa_stub_hash_lookup (&hplink->stub_hash_table, stub_name,
683 if (stub_entry == NULL)
685 (*_bfd_error_handler) (_("%s: cannot create stub entry %s"),
686 bfd_get_filename (section->owner),
691 stub_entry->stub_sec = stub_sec;
692 #if ! LONG_BRANCH_PIC_IN_SHLIB
693 stub_entry->reloc_sec = hplink->stub_group[section->id].reloc_sec;
695 stub_entry->stub_offset = 0;
696 stub_entry->id_sec = link_sec;
700 /* Determine the type of stub needed, if any, for a call. */
702 static enum elf32_hppa_stub_type
703 hppa_type_of_stub (input_sec, rel, hash, destination)
705 const Elf_Internal_Rela *rel;
706 struct elf32_hppa_link_hash_entry *hash;
710 bfd_vma branch_offset;
711 bfd_vma max_branch_offset;
715 && (((hash->elf.root.type == bfd_link_hash_defined
716 || hash->elf.root.type == bfd_link_hash_defweak)
717 && hash->elf.root.u.def.section->output_section == NULL)
718 || (hash->elf.root.type == bfd_link_hash_defweak
719 && hash->elf.dynindx != -1
720 && hash->elf.plt.offset != (bfd_vma) -1)
721 || hash->elf.root.type == bfd_link_hash_undefweak
722 || hash->elf.root.type == bfd_link_hash_undefined
723 || (hash->maybe_pic_call && !(input_sec->flags & SEC_HAS_GOT_REF))))
725 /* If output_section is NULL, then it's a symbol defined in a
726 shared library. We will need an import stub. Decide between
727 hppa_stub_import and hppa_stub_import_shared later. For
728 shared links we need stubs for undefined or weak syms too;
729 They will presumably be resolved by the dynamic linker. */
730 return hppa_stub_import;
733 /* Determine where the call point is. */
734 location = (input_sec->output_offset
735 + input_sec->output_section->vma
738 branch_offset = destination - location - 8;
739 r_type = ELF32_R_TYPE (rel->r_info);
741 /* Determine if a long branch stub is needed. parisc branch offsets
742 are relative to the second instruction past the branch, ie. +8
743 bytes on from the branch instruction location. The offset is
744 signed and counts in units of 4 bytes. */
745 if (r_type == (unsigned int) R_PARISC_PCREL17F)
747 max_branch_offset = (1 << (17-1)) << 2;
749 else if (r_type == (unsigned int) R_PARISC_PCREL12F)
751 max_branch_offset = (1 << (12-1)) << 2;
753 else /* R_PARISC_PCREL22F. */
755 max_branch_offset = (1 << (22-1)) << 2;
758 if (branch_offset + max_branch_offset >= 2*max_branch_offset)
760 #if LONG_BRANCH_VIA_PLT
762 && hash->elf.dynindx != -1
763 && hash->elf.plt.offset != (bfd_vma) -1
764 && hash->elf.type != STT_PARISC_MILLI)
766 /* If we are doing a shared link and find we need a long
767 branch stub, then go via the .plt if possible. */
768 return hppa_stub_import;
772 return hppa_stub_long_branch;
774 return hppa_stub_none;
777 /* Build one linker stub as defined by the stub hash table entry GEN_ENTRY.
778 IN_ARG contains the link info pointer. */
780 #define LDIL_R1 0x20200000 /* ldil LR'XXX,%r1 */
781 #define BE_SR4_R1 0xe0202002 /* be,n RR'XXX(%sr4,%r1) */
783 #define BL_R1 0xe8200000 /* b,l .+8,%r1 */
784 #define ADDIL_R1 0x28200000 /* addil LR'XXX,%r1,%r1 */
785 #define DEPI_R1 0xd4201c1e /* depi 0,31,2,%r1 */
787 #define ADDIL_DP 0x2b600000 /* addil LR'XXX,%dp,%r1 */
788 #define LDW_R1_R21 0x48350000 /* ldw RR'XXX(%sr0,%r1),%r21 */
789 #define BV_R0_R21 0xeaa0c000 /* bv %r0(%r21) */
790 #define LDW_R1_R19 0x48330000 /* ldw RR'XXX(%sr0,%r1),%r19 */
792 #define ADDIL_R19 0x2a600000 /* addil LR'XXX,%r19,%r1 */
793 #define LDW_R1_DP 0x483b0000 /* ldw RR'XXX(%sr0,%r1),%dp */
795 #define LDSID_R21_R1 0x02a010a1 /* ldsid (%sr0,%r21),%r1 */
796 #define MTSP_R1 0x00011820 /* mtsp %r1,%sr0 */
797 #define BE_SR0_R21 0xe2a00000 /* be 0(%sr0,%r21) */
798 #define STW_RP 0x6bc23fd1 /* stw %rp,-24(%sr0,%sp) */
800 #define BL_RP 0xe8400002 /* b,l,n XXX,%rp */
801 #define NOP 0x08000240 /* nop */
802 #define LDW_RP 0x4bc23fd1 /* ldw -24(%sr0,%sp),%rp */
803 #define LDSID_RP_R1 0x004010a1 /* ldsid (%sr0,%rp),%r1 */
804 #define BE_SR0_RP 0xe0400002 /* be,n 0(%sr0,%rp) */
811 #define LDW_R1_DLT LDW_R1_R19
813 #define LDW_R1_DLT LDW_R1_DP
817 hppa_build_one_stub (gen_entry, in_arg)
818 struct bfd_hash_entry *gen_entry;
821 struct elf32_hppa_stub_hash_entry *stub_entry;
822 struct bfd_link_info *info;
823 struct elf32_hppa_link_hash_table *hplink;
833 /* Massage our args to the form they really have. */
834 stub_entry = (struct elf32_hppa_stub_hash_entry *) gen_entry;
835 info = (struct bfd_link_info *) in_arg;
837 hplink = hppa_link_hash_table (info);
838 stub_sec = stub_entry->stub_sec;
840 /* Make a note of the offset within the stubs for this entry. */
841 stub_entry->stub_offset = stub_sec->_raw_size;
842 loc = stub_sec->contents + stub_entry->stub_offset;
844 stub_bfd = stub_sec->owner;
846 switch (stub_entry->stub_type)
848 case hppa_stub_long_branch:
849 /* Create the long branch. A long branch is formed with "ldil"
850 loading the upper bits of the target address into a register,
851 then branching with "be" which adds in the lower bits.
852 The "be" has its delay slot nullified. */
853 sym_value = (stub_entry->target_value
854 + stub_entry->target_section->output_offset
855 + stub_entry->target_section->output_section->vma);
857 val = hppa_field_adjust (sym_value, (bfd_signed_vma) 0, e_lrsel);
858 insn = hppa_rebuild_insn ((int) LDIL_R1, val, 21);
859 bfd_put_32 (stub_bfd, insn, loc);
861 val = hppa_field_adjust (sym_value, (bfd_signed_vma) 0, e_rrsel) >> 2;
862 insn = hppa_rebuild_insn ((int) BE_SR4_R1, val, 17);
863 bfd_put_32 (stub_bfd, insn, loc + 4);
865 #if ! LONG_BRANCH_PIC_IN_SHLIB
868 /* Output a dynamic relocation for this stub. We only
869 output one PCREL21L reloc per stub, trusting that the
870 dynamic linker will also fix the implied PCREL17R for the
871 second instruction. PCREL21L dynamic relocs had better
872 never be emitted for some other purpose... */
874 Elf_Internal_Rela outrel;
876 if (stub_entry->h == NULL)
878 (*_bfd_error_handler)
879 (_("%s(%s+0x%lx): cannot relocate %s, recompile with -ffunction-sections"),
880 bfd_get_filename (stub_entry->target_section->owner),
882 (long) stub_entry->stub_offset,
883 stub_entry->root.string);
884 bfd_set_error (bfd_error_bad_value);
888 srel = stub_entry->reloc_sec;
891 (*_bfd_error_handler)
892 (_("Could not find relocation section for %s"),
894 bfd_set_error (bfd_error_bad_value);
898 outrel.r_offset = (stub_entry->stub_offset
899 + stub_sec->output_offset
900 + stub_sec->output_section->vma);
901 outrel.r_info = ELF32_R_INFO (0, R_PARISC_PCREL21L);
902 outrel.r_addend = sym_value;
903 bfd_elf32_swap_reloca_out (stub_sec->output_section->owner,
905 ((Elf32_External_Rela *)
906 srel->contents + srel->reloc_count));
913 case hppa_stub_long_branch_shared:
914 /* Branches are relative. This is where we are going to. */
915 sym_value = (stub_entry->target_value
916 + stub_entry->target_section->output_offset
917 + stub_entry->target_section->output_section->vma);
919 /* And this is where we are coming from, more or less. */
920 sym_value -= (stub_entry->stub_offset
921 + stub_sec->output_offset
922 + stub_sec->output_section->vma);
924 bfd_put_32 (stub_bfd, (bfd_vma) BL_R1, loc);
925 val = hppa_field_adjust (sym_value, (bfd_signed_vma) -8, e_lrsel);
926 insn = hppa_rebuild_insn ((int) ADDIL_R1, val, 21);
927 bfd_put_32 (stub_bfd, insn, loc + 4);
929 val = hppa_field_adjust (sym_value, (bfd_signed_vma) -8, e_rrsel) >> 2;
930 insn = hppa_rebuild_insn ((int) BE_SR4_R1, val, 17);
931 bfd_put_32 (stub_bfd, insn, loc + 8);
935 case hppa_stub_import:
936 case hppa_stub_import_shared:
937 off = stub_entry->h->elf.plt.offset;
938 if (off >= (bfd_vma) -2)
941 off &= ~ (bfd_vma) 1;
943 + hplink->splt->output_offset
944 + hplink->splt->output_section->vma
945 - elf_gp (hplink->splt->output_section->owner));
949 if (stub_entry->stub_type == hppa_stub_import_shared)
952 val = hppa_field_adjust (sym_value, (bfd_signed_vma) 0, e_lrsel),
953 insn = hppa_rebuild_insn ((int) insn, val, 21);
954 bfd_put_32 (stub_bfd, insn, loc);
956 /* It is critical to use lrsel/rrsel here because we are using
957 two different offsets (+0 and +4) from sym_value. If we use
958 lsel/rsel then with unfortunate sym_values we will round
959 sym_value+4 up to the next 2k block leading to a mis-match
960 between the lsel and rsel value. */
961 val = hppa_field_adjust (sym_value, (bfd_signed_vma) 0, e_rrsel);
962 insn = hppa_rebuild_insn ((int) LDW_R1_R21, val, 14);
963 bfd_put_32 (stub_bfd, insn, loc + 4);
965 if (hplink->multi_subspace)
967 val = hppa_field_adjust (sym_value, (bfd_signed_vma) 4, e_rrsel);
968 insn = hppa_rebuild_insn ((int) LDW_R1_DLT, val, 14);
969 bfd_put_32 (stub_bfd, insn, loc + 8);
971 bfd_put_32 (stub_bfd, (bfd_vma) LDSID_R21_R1, loc + 12);
972 bfd_put_32 (stub_bfd, (bfd_vma) MTSP_R1, loc + 16);
973 bfd_put_32 (stub_bfd, (bfd_vma) BE_SR0_R21, loc + 20);
974 bfd_put_32 (stub_bfd, (bfd_vma) STW_RP, loc + 24);
980 bfd_put_32 (stub_bfd, (bfd_vma) BV_R0_R21, loc + 8);
981 val = hppa_field_adjust (sym_value, (bfd_signed_vma) 4, e_rrsel);
982 insn = hppa_rebuild_insn ((int) LDW_R1_DLT, val, 14);
983 bfd_put_32 (stub_bfd, insn, loc + 12);
989 && stub_entry->h != NULL
990 && stub_entry->h->pic_call)
992 /* Build the .plt entry needed to call a PIC function from
993 statically linked code. We don't need any relocs. */
995 struct elf32_hppa_link_hash_entry *eh;
998 dynobj = hplink->root.dynobj;
999 eh = (struct elf32_hppa_link_hash_entry *) stub_entry->h;
1001 if (eh->elf.root.type != bfd_link_hash_defined
1002 && eh->elf.root.type != bfd_link_hash_defweak)
1005 value = (eh->elf.root.u.def.value
1006 + eh->elf.root.u.def.section->output_offset
1007 + eh->elf.root.u.def.section->output_section->vma);
1009 /* Fill in the entry in the procedure linkage table.
1011 The format of a plt entry is
1015 bfd_put_32 (hplink->splt->owner, value,
1016 hplink->splt->contents + off);
1017 value = elf_gp (hplink->splt->output_section->owner);
1018 bfd_put_32 (hplink->splt->owner, value,
1019 hplink->splt->contents + off + 4);
1023 case hppa_stub_export:
1024 /* Branches are relative. This is where we are going to. */
1025 sym_value = (stub_entry->target_value
1026 + stub_entry->target_section->output_offset
1027 + stub_entry->target_section->output_section->vma);
1029 /* And this is where we are coming from. */
1030 sym_value -= (stub_entry->stub_offset
1031 + stub_sec->output_offset
1032 + stub_sec->output_section->vma);
1034 if (sym_value - 8 + 0x40000 >= 0x80000)
1036 (*_bfd_error_handler)
1037 (_("%s(%s+0x%lx): cannot reach %s, recompile with -ffunction-sections"),
1038 bfd_get_filename (stub_entry->target_section->owner),
1040 (long) stub_entry->stub_offset,
1041 stub_entry->root.string);
1042 bfd_set_error (bfd_error_bad_value);
1046 val = hppa_field_adjust (sym_value, (bfd_signed_vma) -8, e_fsel) >> 2;
1047 insn = hppa_rebuild_insn ((int) BL_RP, val, 17);
1048 bfd_put_32 (stub_bfd, insn, loc);
1050 bfd_put_32 (stub_bfd, (bfd_vma) NOP, loc + 4);
1051 bfd_put_32 (stub_bfd, (bfd_vma) LDW_RP, loc + 8);
1052 bfd_put_32 (stub_bfd, (bfd_vma) LDSID_RP_R1, loc + 12);
1053 bfd_put_32 (stub_bfd, (bfd_vma) MTSP_R1, loc + 16);
1054 bfd_put_32 (stub_bfd, (bfd_vma) BE_SR0_RP, loc + 20);
1056 /* Point the function symbol at the stub. */
1057 stub_entry->h->elf.root.u.def.section = stub_sec;
1058 stub_entry->h->elf.root.u.def.value = stub_sec->_raw_size;
1068 stub_sec->_raw_size += size;
1094 /* As above, but don't actually build the stub. Just bump offset so
1095 we know stub section sizes. */
1098 hppa_size_one_stub (gen_entry, in_arg)
1099 struct bfd_hash_entry *gen_entry;
1102 struct elf32_hppa_stub_hash_entry *stub_entry;
1103 struct elf32_hppa_link_hash_table *hplink;
1106 /* Massage our args to the form they really have. */
1107 stub_entry = (struct elf32_hppa_stub_hash_entry *) gen_entry;
1108 hplink = (struct elf32_hppa_link_hash_table *) in_arg;
1110 if (stub_entry->stub_type == hppa_stub_long_branch)
1112 #if ! LONG_BRANCH_PIC_IN_SHLIB
1113 if (stub_entry->reloc_sec != NULL)
1114 stub_entry->reloc_sec->_raw_size += sizeof (Elf32_External_Rela);
1118 else if (stub_entry->stub_type == hppa_stub_long_branch_shared)
1120 else if (stub_entry->stub_type == hppa_stub_export)
1122 else /* hppa_stub_import or hppa_stub_import_shared. */
1124 if (hplink->multi_subspace)
1130 stub_entry->stub_sec->_raw_size += size;
1134 /* Return nonzero if ABFD represents an HPPA ELF32 file.
1135 Additionally we set the default architecture and machine. */
1138 elf32_hppa_object_p (abfd)
1141 Elf_Internal_Ehdr * i_ehdrp;
1144 i_ehdrp = elf_elfheader (abfd);
1145 if (strcmp (bfd_get_target (abfd), "elf32-hppa-linux") == 0)
1147 if (i_ehdrp->e_ident[EI_OSABI] != ELFOSABI_LINUX)
1152 if (i_ehdrp->e_ident[EI_OSABI] != ELFOSABI_HPUX)
1156 flags = i_ehdrp->e_flags;
1157 switch (flags & (EF_PARISC_ARCH | EF_PARISC_WIDE))
1159 case EFA_PARISC_1_0:
1160 return bfd_default_set_arch_mach (abfd, bfd_arch_hppa, 10);
1161 case EFA_PARISC_1_1:
1162 return bfd_default_set_arch_mach (abfd, bfd_arch_hppa, 11);
1163 case EFA_PARISC_2_0:
1164 return bfd_default_set_arch_mach (abfd, bfd_arch_hppa, 20);
1165 case EFA_PARISC_2_0 | EF_PARISC_WIDE:
1166 return bfd_default_set_arch_mach (abfd, bfd_arch_hppa, 25);
1171 /* Undo the generic ELF code's subtraction of section->vma from the
1172 value of each external symbol. */
1175 elf32_hppa_add_symbol_hook (abfd, info, sym, namep, flagsp, secp, valp)
1176 bfd *abfd ATTRIBUTE_UNUSED;
1177 struct bfd_link_info *info ATTRIBUTE_UNUSED;
1178 const Elf_Internal_Sym *sym ATTRIBUTE_UNUSED;
1179 const char **namep ATTRIBUTE_UNUSED;
1180 flagword *flagsp ATTRIBUTE_UNUSED;
1184 *valp += (*secp)->vma;
1188 /* Create the .plt and .got sections, and set up our hash table
1189 short-cuts to various dynamic sections. */
1192 elf32_hppa_create_dynamic_sections (abfd, info)
1194 struct bfd_link_info *info;
1196 struct elf32_hppa_link_hash_table *hplink;
1198 /* Don't try to create the .plt and .got twice. */
1199 hplink = hppa_link_hash_table (info);
1200 if (hplink->splt != NULL)
1203 /* Call the generic code to do most of the work. */
1204 if (! _bfd_elf_create_dynamic_sections (abfd, info))
1207 hplink->splt = bfd_get_section_by_name (abfd, ".plt");
1208 hplink->srelplt = bfd_get_section_by_name (abfd, ".rela.plt");
1210 hplink->sgot = bfd_get_section_by_name (abfd, ".got");
1211 hplink->srelgot = bfd_make_section (abfd, ".rela.got");
1212 if (hplink->srelgot == NULL
1213 || ! bfd_set_section_flags (abfd, hplink->srelgot,
1218 | SEC_LINKER_CREATED
1220 || ! bfd_set_section_alignment (abfd, hplink->srelgot, 2))
1223 hplink->sdynbss = bfd_get_section_by_name (abfd, ".dynbss");
1224 hplink->srelbss = bfd_get_section_by_name (abfd, ".rela.bss");
1229 /* Look through the relocs for a section during the first phase, and
1230 allocate space in the global offset table or procedure linkage
1231 table. At this point we haven't necessarily read all the input
1235 elf32_hppa_check_relocs (abfd, info, sec, relocs)
1237 struct bfd_link_info *info;
1239 const Elf_Internal_Rela *relocs;
1242 Elf_Internal_Shdr *symtab_hdr;
1243 struct elf_link_hash_entry **sym_hashes;
1244 bfd_signed_vma *local_got_refcounts;
1245 const Elf_Internal_Rela *rel;
1246 const Elf_Internal_Rela *rel_end;
1247 struct elf32_hppa_link_hash_table *hplink;
1249 asection *stubreloc;
1251 if (info->relocateable)
1254 hplink = hppa_link_hash_table (info);
1255 dynobj = hplink->root.dynobj;
1256 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
1257 sym_hashes = elf_sym_hashes (abfd);
1258 local_got_refcounts = elf_local_got_refcounts (abfd);
1262 rel_end = relocs + sec->reloc_count;
1263 for (rel = relocs; rel < rel_end; rel++)
1269 #if LONG_BRANCH_PIC_IN_SHLIB
1270 NEED_STUBREL = 0, /* We won't be needing them in this case. */
1277 unsigned int r_symndx, r_type;
1278 struct elf32_hppa_link_hash_entry *h;
1281 r_symndx = ELF32_R_SYM (rel->r_info);
1283 if (r_symndx < symtab_hdr->sh_info)
1286 h = ((struct elf32_hppa_link_hash_entry *)
1287 sym_hashes[r_symndx - symtab_hdr->sh_info]);
1289 r_type = ELF32_R_TYPE (rel->r_info);
1293 case R_PARISC_DLTIND14F:
1294 case R_PARISC_DLTIND14R:
1295 case R_PARISC_DLTIND21L:
1296 /* This symbol requires a global offset table entry. */
1297 need_entry = NEED_GOT;
1299 /* Mark this section as containing PIC code. */
1300 sec->flags |= SEC_HAS_GOT_REF;
1303 case R_PARISC_PLABEL14R: /* "Official" procedure labels. */
1304 case R_PARISC_PLABEL21L:
1305 case R_PARISC_PLABEL32:
1306 /* If the addend is non-zero, we break badly. */
1307 if (rel->r_addend != 0)
1310 /* If we are creating a shared library, then we need to
1311 create a PLT entry for all PLABELs, because PLABELs with
1312 local symbols may be passed via a pointer to another
1313 object. Additionally, output a dynamic relocation
1314 pointing to the PLT entry.
1315 For executables, the original 32-bit ABI allowed two
1316 different styles of PLABELs (function pointers): For
1317 global functions, the PLABEL word points into the .plt
1318 two bytes past a (function address, gp) pair, and for
1319 local functions the PLABEL points directly at the
1320 function. The magic +2 for the first type allows us to
1321 differentiate between the two. As you can imagine, this
1322 is a real pain when it comes to generating code to call
1323 functions indirectly or to compare function pointers.
1324 We avoid the mess by always pointing a PLABEL into the
1325 .plt, even for local functions. */
1326 need_entry = PLT_PLABEL | NEED_PLT | NEED_DYNREL;
1329 case R_PARISC_PCREL12F:
1330 hplink->has_12bit_branch = 1;
1332 case R_PARISC_PCREL17C:
1333 case R_PARISC_PCREL17F:
1334 hplink->has_17bit_branch = 1;
1336 case R_PARISC_PCREL22F:
1337 /* Function calls might need to go through the .plt, and
1338 might require long branch stubs. */
1341 /* We know local syms won't need a .plt entry, and if
1342 they need a long branch stub we can't guarantee that
1343 we can reach the stub. So just flag an error later
1344 if we're doing a shared link and find we need a long
1350 /* Global symbols will need a .plt entry if they remain
1351 global, and in most cases won't need a long branch
1352 stub. Unfortunately, we have to cater for the case
1353 where a symbol is forced local by versioning, or due
1354 to symbolic linking, and we lose the .plt entry. */
1355 need_entry = NEED_PLT | NEED_STUBREL;
1356 if (h->elf.type == STT_PARISC_MILLI)
1357 need_entry = NEED_STUBREL;
1361 case R_PARISC_SEGBASE: /* Used to set segment base. */
1362 case R_PARISC_SEGREL32: /* Relative reloc, used for unwind. */
1363 case R_PARISC_PCREL14F: /* PC relative load/store. */
1364 case R_PARISC_PCREL14R:
1365 case R_PARISC_PCREL17R: /* External branches. */
1366 case R_PARISC_PCREL21L: /* As above, and for load/store too. */
1367 /* We don't need to propagate the relocation if linking a
1368 shared object since these are section relative. */
1371 case R_PARISC_DPREL14F: /* Used for gp rel data load/store. */
1372 case R_PARISC_DPREL14R:
1373 case R_PARISC_DPREL21L:
1376 (*_bfd_error_handler)
1377 (_("%s: relocation %s can not be used when making a shared object; recompile with -fPIC"),
1378 bfd_get_filename (abfd),
1379 elf_hppa_howto_table[r_type].name);
1380 bfd_set_error (bfd_error_bad_value);
1385 case R_PARISC_DIR17F: /* Used for external branches. */
1386 case R_PARISC_DIR17R:
1387 case R_PARISC_DIR14F: /* Used for load/store from absolute locn. */
1388 case R_PARISC_DIR14R:
1389 case R_PARISC_DIR21L: /* As above, and for ext branches too. */
1391 /* Help debug shared library creation. Any of the above
1392 relocs can be used in shared libs, but they may cause
1393 pages to become unshared. */
1396 (*_bfd_error_handler)
1397 (_("%s: relocation %s should not be used when making a shared object; recompile with -fPIC"),
1398 bfd_get_filename (abfd),
1399 elf_hppa_howto_table[r_type].name);
1404 case R_PARISC_DIR32: /* .word relocs. */
1405 /* We may want to output a dynamic relocation later. */
1406 need_entry = NEED_DYNREL;
1409 /* This relocation describes the C++ object vtable hierarchy.
1410 Reconstruct it for later use during GC. */
1411 case R_PARISC_GNU_VTINHERIT:
1412 if (!_bfd_elf32_gc_record_vtinherit (abfd, sec,
1413 &h->elf, rel->r_offset))
1417 /* This relocation describes which C++ vtable entries are actually
1418 used. Record for later use during GC. */
1419 case R_PARISC_GNU_VTENTRY:
1420 if (!_bfd_elf32_gc_record_vtentry (abfd, sec,
1421 &h->elf, rel->r_addend))
1429 /* Now carry out our orders. */
1430 if (need_entry & NEED_GOT)
1432 /* Allocate space for a GOT entry, as well as a dynamic
1433 relocation for this entry. */
1435 hplink->root.dynobj = dynobj = abfd;
1437 if (hplink->sgot == NULL)
1439 if (! elf32_hppa_create_dynamic_sections (dynobj, info))
1445 if (h->elf.got.refcount == -1)
1446 h->elf.got.refcount = 1;
1448 h->elf.got.refcount += 1;
1452 /* This is a global offset table entry for a local symbol. */
1453 if (local_got_refcounts == NULL)
1457 /* Allocate space for local got offsets and local
1458 plt offsets. Done this way to save polluting
1459 elf_obj_tdata with another target specific
1461 size = symtab_hdr->sh_info * 2 * sizeof (bfd_signed_vma);
1462 local_got_refcounts = ((bfd_signed_vma *)
1463 bfd_alloc (abfd, size));
1464 if (local_got_refcounts == NULL)
1466 elf_local_got_refcounts (abfd) = local_got_refcounts;
1467 memset (local_got_refcounts, -1, size);
1469 if (local_got_refcounts[r_symndx] == -1)
1470 local_got_refcounts[r_symndx] = 1;
1472 local_got_refcounts[r_symndx] += 1;
1476 if (need_entry & NEED_PLT)
1478 /* If we are creating a shared library, and this is a reloc
1479 against a weak symbol or a global symbol in a dynamic
1480 object, then we will be creating an import stub and a
1481 .plt entry for the symbol. Similarly, on a normal link
1482 to symbols defined in a dynamic object we'll need the
1483 import stub and a .plt entry. We don't know yet whether
1484 the symbol is defined or not, so make an entry anyway and
1485 clean up later in adjust_dynamic_symbol. */
1486 if ((sec->flags & SEC_ALLOC) != 0)
1490 if (h->elf.plt.refcount == -1)
1492 h->elf.plt.refcount = 1;
1493 h->elf.elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_PLT;
1496 h->elf.plt.refcount += 1;
1498 /* If this .plt entry is for a plabel, mark it so
1499 that adjust_dynamic_symbol will keep the entry
1500 even if it appears to be local. */
1501 if (need_entry & PLT_PLABEL)
1504 else if (need_entry & PLT_PLABEL)
1506 bfd_signed_vma *local_plt_refcounts;
1508 if (local_got_refcounts == NULL)
1512 /* Allocate space for local got offsets and local
1514 size = symtab_hdr->sh_info * 2 * sizeof (bfd_signed_vma);
1515 local_got_refcounts = ((bfd_signed_vma *)
1516 bfd_alloc (abfd, size));
1517 if (local_got_refcounts == NULL)
1519 elf_local_got_refcounts (abfd) = local_got_refcounts;
1520 memset (local_got_refcounts, -1, size);
1522 local_plt_refcounts = (local_got_refcounts
1523 + symtab_hdr->sh_info);
1524 if (local_plt_refcounts[r_symndx] == -1)
1525 local_plt_refcounts[r_symndx] = 1;
1527 local_plt_refcounts[r_symndx] += 1;
1532 if (need_entry & (NEED_DYNREL | NEED_STUBREL))
1534 /* Flag this symbol as having a non-got, non-plt reference
1535 so that we generate copy relocs if it turns out to be
1537 if (need_entry == NEED_DYNREL
1540 && (sec->flags & SEC_READONLY) != 0)
1541 h->elf.elf_link_hash_flags |= ELF_LINK_NON_GOT_REF;
1543 /* If we are creating a shared library then we need to copy
1544 the reloc into the shared library. However, if we are
1545 linking with -Bsymbolic, we need only copy absolute
1546 relocs or relocs against symbols that are not defined in
1547 an object we are including in the link. PC- or DP- or
1548 DLT-relative relocs against any local sym or global sym
1549 with DEF_REGULAR set, can be discarded. At this point we
1550 have not seen all the input files, so it is possible that
1551 DEF_REGULAR is not set now but will be set later (it is
1552 never cleared). We account for that possibility below by
1553 storing information in the reloc_entries field of the
1556 A similar situation to the -Bsymbolic case occurs when
1557 creating shared libraries and symbol visibility changes
1558 render the symbol local.
1560 As it turns out, all the relocs we will be creating here
1561 are absolute, so we cannot remove them on -Bsymbolic
1562 links or visibility changes anyway. A STUB_REL reloc
1563 is absolute too, as in that case it is the reloc in the
1564 stub we will be creating, rather than copying the PCREL
1565 reloc in the branch.
1567 If on the other hand, we are creating an executable, we
1568 may need to keep relocations for symbols satisfied by a
1569 dynamic library if we manage to avoid copy relocs for the
1572 && (sec->flags & SEC_ALLOC) != 0
1573 && (IS_ABSOLUTE_RELOC (r_type)
1576 || h->elf.root.type == bfd_link_hash_defweak
1577 || (h->elf.elf_link_hash_flags
1578 & ELF_LINK_HASH_DEF_REGULAR) == 0))))
1580 && (sec->flags & SEC_ALLOC) != 0
1582 && (h->elf.elf_link_hash_flags & ELF_LINK_NON_GOT_REF) == 0
1583 && (h->elf.root.type == bfd_link_hash_defweak
1584 || (h->elf.elf_link_hash_flags
1585 & ELF_LINK_HASH_DEF_REGULAR) == 0)))
1591 if ((need_entry & NEED_STUBREL))
1594 /* Create a reloc section in dynobj and make room for
1601 hplink->root.dynobj = dynobj = abfd;
1603 name = bfd_elf_string_from_elf_section
1605 elf_elfheader (abfd)->e_shstrndx,
1606 elf_section_data (sec)->rel_hdr.sh_name);
1609 (*_bfd_error_handler)
1610 (_("Could not find relocation section for %s"),
1612 bfd_set_error (bfd_error_bad_value);
1616 if ((need_entry & NEED_STUBREL))
1618 size_t len = strlen (name) + sizeof (STUB_SUFFIX);
1619 char *newname = bfd_malloc (len);
1621 if (newname == NULL)
1623 strcpy (newname, name);
1624 strcpy (newname + len - sizeof (STUB_SUFFIX),
1629 srel = bfd_get_section_by_name (dynobj, name);
1634 srel = bfd_make_section (dynobj, name);
1635 flags = (SEC_HAS_CONTENTS | SEC_READONLY
1636 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
1637 if ((sec->flags & SEC_ALLOC) != 0)
1638 flags |= SEC_ALLOC | SEC_LOAD;
1640 || !bfd_set_section_flags (dynobj, srel, flags)
1641 || !bfd_set_section_alignment (dynobj, srel, 2))
1644 else if ((need_entry & NEED_STUBREL))
1647 if ((need_entry & NEED_STUBREL))
1653 #if ! LONG_BRANCH_PIC_IN_SHLIB
1654 /* If this is a function call, we only need one dynamic
1655 reloc for the stub as all calls to a particular
1656 function will go through the same stub. Actually, a
1657 long branch stub needs two relocations, but we count
1658 on some intelligence on the part of the dynamic
1660 if ((need_entry & NEED_STUBREL))
1662 doit = h->stub_reloc_sec != stubreloc;
1663 h->stub_reloc_sec = stubreloc;
1671 srel->_raw_size += sizeof (Elf32_External_Rela);
1673 /* Keep track of relocations we have entered for
1674 this global symbol, so that we can discard them
1675 later if necessary. */
1678 && (! IS_ABSOLUTE_RELOC (rtype)
1679 || (need_entry & NEED_STUBREL))))
1681 struct elf32_hppa_dyn_reloc_entry *p;
1683 for (p = h->reloc_entries; p != NULL; p = p->next)
1684 if (p->section == srel)
1689 p = ((struct elf32_hppa_dyn_reloc_entry *)
1690 bfd_alloc (dynobj, sizeof *p));
1693 p->next = h->reloc_entries;
1694 h->reloc_entries = p;
1699 /* NEED_STUBREL and NEED_DYNREL are never both
1700 set. Leave the count at zero for the
1701 NEED_STUBREL case as we only ever have one
1702 stub reloc per section per symbol, and this
1703 simplifies code to discard unneeded relocs. */
1704 if (! (need_entry & NEED_STUBREL))
1715 /* Return the section that should be marked against garbage collection
1716 for a given relocation. */
1719 elf32_hppa_gc_mark_hook (abfd, info, rel, h, sym)
1721 struct bfd_link_info *info ATTRIBUTE_UNUSED;
1722 Elf_Internal_Rela *rel;
1723 struct elf_link_hash_entry *h;
1724 Elf_Internal_Sym *sym;
1728 switch ((unsigned int) ELF32_R_TYPE (rel->r_info))
1730 case R_PARISC_GNU_VTINHERIT:
1731 case R_PARISC_GNU_VTENTRY:
1735 switch (h->root.type)
1737 case bfd_link_hash_defined:
1738 case bfd_link_hash_defweak:
1739 return h->root.u.def.section;
1741 case bfd_link_hash_common:
1742 return h->root.u.c.p->section;
1751 if (!(elf_bad_symtab (abfd)
1752 && ELF_ST_BIND (sym->st_info) != STB_LOCAL)
1753 && ! ((sym->st_shndx <= 0 || sym->st_shndx >= SHN_LORESERVE)
1754 && sym->st_shndx != SHN_COMMON))
1756 return bfd_section_from_elf_index (abfd, sym->st_shndx);
1763 /* Update the got and plt entry reference counts for the section being
1767 elf32_hppa_gc_sweep_hook (abfd, info, sec, relocs)
1769 struct bfd_link_info *info ATTRIBUTE_UNUSED;
1771 const Elf_Internal_Rela *relocs;
1773 Elf_Internal_Shdr *symtab_hdr;
1774 struct elf_link_hash_entry **sym_hashes;
1775 bfd_signed_vma *local_got_refcounts;
1776 bfd_signed_vma *local_plt_refcounts;
1777 const Elf_Internal_Rela *rel, *relend;
1778 unsigned long r_symndx;
1779 struct elf_link_hash_entry *h;
1780 struct elf32_hppa_link_hash_table *hplink;
1783 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
1784 sym_hashes = elf_sym_hashes (abfd);
1785 local_got_refcounts = elf_local_got_refcounts (abfd);
1786 local_plt_refcounts = local_got_refcounts;
1787 if (local_plt_refcounts != NULL)
1788 local_plt_refcounts += symtab_hdr->sh_info;
1789 hplink = hppa_link_hash_table (info);
1790 dynobj = hplink->root.dynobj;
1794 relend = relocs + sec->reloc_count;
1795 for (rel = relocs; rel < relend; rel++)
1796 switch ((unsigned int) ELF32_R_TYPE (rel->r_info))
1798 case R_PARISC_DLTIND14F:
1799 case R_PARISC_DLTIND14R:
1800 case R_PARISC_DLTIND21L:
1801 r_symndx = ELF32_R_SYM (rel->r_info);
1802 if (r_symndx >= symtab_hdr->sh_info)
1804 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
1805 if (h->got.refcount > 0)
1806 h->got.refcount -= 1;
1808 else if (local_got_refcounts != NULL)
1810 if (local_got_refcounts[r_symndx] > 0)
1811 local_got_refcounts[r_symndx] -= 1;
1815 case R_PARISC_PCREL12F:
1816 case R_PARISC_PCREL17C:
1817 case R_PARISC_PCREL17F:
1818 case R_PARISC_PCREL22F:
1819 r_symndx = ELF32_R_SYM (rel->r_info);
1820 if (r_symndx >= symtab_hdr->sh_info)
1822 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
1823 if (h->plt.refcount > 0)
1824 h->plt.refcount -= 1;
1828 case R_PARISC_PLABEL14R:
1829 case R_PARISC_PLABEL21L:
1830 case R_PARISC_PLABEL32:
1831 r_symndx = ELF32_R_SYM (rel->r_info);
1832 if (r_symndx >= symtab_hdr->sh_info)
1834 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
1835 if (h->plt.refcount > 0)
1836 h->plt.refcount -= 1;
1838 else if (local_plt_refcounts != NULL)
1840 if (local_plt_refcounts[r_symndx] > 0)
1841 local_plt_refcounts[r_symndx] -= 1;
1852 /* Our own version of hide_symbol, so that we can keep plt entries for
1856 elf32_hppa_hide_symbol (info, h)
1857 struct bfd_link_info *info ATTRIBUTE_UNUSED;
1858 struct elf_link_hash_entry *h;
1860 if ((h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) != 0)
1862 if (! ((struct elf32_hppa_link_hash_entry *) h)->plabel)
1864 h->elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT;
1865 h->plt.offset = (bfd_vma) -1;
1869 /* This is the condition under which elf32_hppa_finish_dynamic_symbol
1870 will be called from elflink.h. If elflink.h doesn't call our
1871 finish_dynamic_symbol routine, we'll need to do something about
1872 initializing any .plt and .got entries in elf32_hppa_relocate_section. */
1873 #define WILL_CALL_FINISH_DYNAMIC_SYMBOL(DYN, INFO, H) \
1875 && ((INFO)->shared \
1876 || ((H)->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0) \
1877 && ((H)->dynindx != -1 \
1878 || ((H)->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) != 0))
1880 /* Adjust a symbol defined by a dynamic object and referenced by a
1881 regular object. The current definition is in some section of the
1882 dynamic object, but we're not including those sections. We have to
1883 change the definition to something the rest of the link can
1887 elf32_hppa_adjust_dynamic_symbol (info, h)
1888 struct bfd_link_info *info;
1889 struct elf_link_hash_entry *h;
1892 struct elf32_hppa_link_hash_table *hplink;
1895 hplink = hppa_link_hash_table (info);
1896 dynobj = hplink->root.dynobj;
1898 /* If this is a function, put it in the procedure linkage table. We
1899 will fill in the contents of the procedure linkage table later,
1900 when we know the address of the .got section. */
1901 if (h->type == STT_FUNC
1902 || (h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT) != 0)
1905 && h->plt.refcount > 0
1906 && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) != 0
1907 && (h->root.u.def.section->flags & SEC_HAS_GOT_REF) != 0)
1909 ((struct elf32_hppa_link_hash_entry *) h)->maybe_pic_call = 1;
1912 if (h->plt.refcount <= 0
1913 || ((h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) != 0
1914 && h->root.type != bfd_link_hash_defweak
1915 && ! ((struct elf32_hppa_link_hash_entry *) h)->plabel
1916 && (!info->shared || info->symbolic)))
1918 /* The .plt entry is not needed when:
1919 a) Garbage collection has removed all references to the
1921 b) We know for certain the symbol is defined in this
1922 object, and it's not a weak definition, nor is the symbol
1923 used by a plabel relocation. Either this object is the
1924 application or we are doing a shared symbolic link. */
1926 /* As a special sop to the hppa ABI, we keep a .plt entry
1927 for functions in sections containing PIC code. */
1928 if (((struct elf32_hppa_link_hash_entry *) h)->maybe_pic_call)
1929 ((struct elf32_hppa_link_hash_entry *) h)->pic_call = 1;
1932 h->plt.offset = (bfd_vma) -1;
1933 h->elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT;
1940 /* If this is a weak symbol, and there is a real definition, the
1941 processor independent code will have arranged for us to see the
1942 real definition first, and we can just use the same value. */
1943 if (h->weakdef != NULL)
1945 if (h->weakdef->root.type != bfd_link_hash_defined
1946 && h->weakdef->root.type != bfd_link_hash_defweak)
1948 h->root.u.def.section = h->weakdef->root.u.def.section;
1949 h->root.u.def.value = h->weakdef->root.u.def.value;
1953 /* This is a reference to a symbol defined by a dynamic object which
1954 is not a function. */
1956 /* If we are creating a shared library, we must presume that the
1957 only references to the symbol are via the global offset table.
1958 For such cases we need not do anything here; the relocations will
1959 be handled correctly by relocate_section. */
1963 /* If there are no references to this symbol that do not use the
1964 GOT, we don't need to generate a copy reloc. */
1965 if ((h->elf_link_hash_flags & ELF_LINK_NON_GOT_REF) == 0)
1968 /* We must allocate the symbol in our .dynbss section, which will
1969 become part of the .bss section of the executable. There will be
1970 an entry for this symbol in the .dynsym section. The dynamic
1971 object will contain position independent code, so all references
1972 from the dynamic object to this symbol will go through the global
1973 offset table. The dynamic linker will use the .dynsym entry to
1974 determine the address it must put in the global offset table, so
1975 both the dynamic object and the regular object will refer to the
1976 same memory location for the variable. */
1978 s = hplink->sdynbss;
1980 /* We must generate a COPY reloc to tell the dynamic linker to
1981 copy the initial value out of the dynamic object and into the
1982 runtime process image. We need to remember the offset into the
1983 .rela.bss section we are going to use. */
1984 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0)
1988 srel = hplink->srelbss;
1989 srel->_raw_size += sizeof (Elf32_External_Rela);
1990 h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_COPY;
1994 /* We need to figure out the alignment required for this symbol. I
1995 have no idea how other ELF linkers handle this. */
1996 unsigned int power_of_two;
1998 power_of_two = bfd_log2 (h->size);
1999 if (power_of_two > 3)
2002 /* Apply the required alignment. */
2003 s->_raw_size = BFD_ALIGN (s->_raw_size,
2004 (bfd_size_type) (1 << power_of_two));
2005 if (power_of_two > bfd_get_section_alignment (dynobj, s))
2007 if (! bfd_set_section_alignment (dynobj, s, power_of_two))
2011 /* Define the symbol as being at this point in the section. */
2012 h->root.u.def.section = s;
2013 h->root.u.def.value = s->_raw_size;
2015 /* Increment the section size to make room for the symbol. */
2016 s->_raw_size += h->size;
2021 /* Called via elf_link_hash_traverse to create .plt entries for an
2022 application that uses statically linked PIC functions. Similar to
2023 the first part of elf32_hppa_adjust_dynamic_symbol. */
2026 hppa_handle_PIC_calls (h, inf)
2027 struct elf_link_hash_entry *h;
2028 PTR inf ATTRIBUTE_UNUSED;
2030 if (! (h->plt.refcount > 0
2031 && (h->root.type == bfd_link_hash_defined
2032 || h->root.type == bfd_link_hash_defweak)
2033 && (h->root.u.def.section->flags & SEC_HAS_GOT_REF) != 0))
2035 h->plt.offset = (bfd_vma) -1;
2036 h->elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT;
2040 h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_PLT;
2041 ((struct elf32_hppa_link_hash_entry *) h)->maybe_pic_call = 1;
2042 ((struct elf32_hppa_link_hash_entry *) h)->pic_call = 1;
2047 /* Allocate space in .plt, .got and associated reloc sections for
2051 allocate_plt_and_got_and_discard_relocs (h, inf)
2052 struct elf_link_hash_entry *h;
2055 struct bfd_link_info *info;
2056 struct elf32_hppa_link_hash_table *hplink;
2058 struct elf32_hppa_link_hash_entry *eh;
2060 if (h->root.type == bfd_link_hash_indirect
2061 || h->root.type == bfd_link_hash_warning)
2064 info = (struct bfd_link_info *) inf;
2065 hplink = hppa_link_hash_table (info);
2066 if ((hplink->root.dynamic_sections_created
2067 && h->plt.refcount > 0)
2068 || ((struct elf32_hppa_link_hash_entry *) h)->pic_call)
2070 /* Make sure this symbol is output as a dynamic symbol.
2071 Undefined weak syms won't yet be marked as dynamic. */
2072 if (h->dynindx == -1
2073 && (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0
2074 && h->type != STT_PARISC_MILLI
2075 && !((struct elf32_hppa_link_hash_entry *) h)->pic_call)
2077 if (! bfd_elf32_link_record_dynamic_symbol (info, h))
2081 /* Make an entry in the .plt section. */
2083 h->plt.offset = s->_raw_size;
2084 if (PLABEL_PLT_ENTRY_SIZE != PLT_ENTRY_SIZE
2085 && ((struct elf32_hppa_link_hash_entry *) h)->plabel
2086 && (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0)
2088 /* Add some extra space for the dynamic linker to use. */
2089 s->_raw_size += PLABEL_PLT_ENTRY_SIZE;
2092 s->_raw_size += PLT_ENTRY_SIZE;
2094 if (! ((struct elf32_hppa_link_hash_entry *) h)->pic_call
2095 && WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, info, h))
2097 /* We also need to make an entry in the .rela.plt section. */
2098 hplink->srelplt->_raw_size += sizeof (Elf32_External_Rela);
2099 hplink->need_plt_stub = 1;
2104 h->plt.offset = (bfd_vma) -1;
2105 h->elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT;
2108 if (h->got.refcount > 0)
2112 /* Make sure this symbol is output as a dynamic symbol.
2113 Undefined weak syms won't yet be marked as dynamic. */
2114 if (h->dynindx == -1
2115 && (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0
2116 && h->type != STT_PARISC_MILLI)
2118 if (! bfd_elf32_link_record_dynamic_symbol (info, h))
2123 h->got.offset = s->_raw_size;
2124 s->_raw_size += GOT_ENTRY_SIZE;
2125 dyn = hplink->root.dynamic_sections_created;
2126 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info, h))
2127 hplink->srelgot->_raw_size += sizeof (Elf32_External_Rela);
2130 h->got.offset = (bfd_vma) -1;
2132 /* If this is a -Bsymbolic shared link, then we need to discard all
2133 space allocated for dynamic relocs against symbols defined in a
2134 regular object. For the normal shared case, discard space for
2135 relocs that have become local due to symbol visibility changes.
2136 For the non-shared case, discard space for symbols which turn out
2137 to need copy relocs or are not dynamic. We also need to lose
2138 relocs we've allocated for long branch stubs if we know we won't
2139 be generating a stub. */
2141 eh = (struct elf32_hppa_link_hash_entry *) h;
2142 if (eh->reloc_entries == NULL)
2145 /* First handle the non-shared case. */
2147 && (h->elf_link_hash_flags & ELF_LINK_NON_GOT_REF) == 0
2148 && (((h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) != 0
2149 && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0)
2150 || (hplink->root.dynamic_sections_created
2151 && (h->root.type == bfd_link_hash_undefweak
2152 || h->root.type == bfd_link_hash_undefined))))
2154 /* Make sure this symbol is output as a dynamic symbol.
2155 Undefined weak syms won't yet be marked as dynamic. */
2156 if (h->dynindx == -1
2157 && (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0
2158 && h->type != STT_PARISC_MILLI)
2160 if (! bfd_elf32_link_record_dynamic_symbol (info, h))
2164 /* If that succeeded, we know we'll be keeping all the relocs. */
2165 if (h->dynindx != -1)
2169 #if ! LONG_BRANCH_PIC_IN_SHLIB && LONG_BRANCH_VIA_PLT
2170 /* Handle the stub reloc case. If we have a plt entry for the
2171 function, we won't be needing long branch stubs. c->count will
2172 only be zero for stub relocs, which provides a handy way of
2173 flagging these relocs, and means we need do nothing special for
2174 the forced local and symbolic link case. */
2175 if (eh->stub_reloc_sec != NULL
2176 && eh->elf.plt.offset != (bfd_vma) -1)
2178 struct elf32_hppa_dyn_reloc_entry *c;
2180 for (c = eh->reloc_entries; c != NULL; c = c->next)
2182 c->section->_raw_size -= sizeof (Elf32_External_Rela);
2186 /* Discard any relocs in the non-shared case. For the shared case,
2187 if a symbol has been forced local or we have found a regular
2188 definition for the symbolic link case, then we won't be needing
2191 || ((eh->elf.elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) != 0
2192 && ((eh->elf.elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) != 0
2193 || info->symbolic)))
2195 struct elf32_hppa_dyn_reloc_entry *c;
2197 for (c = eh->reloc_entries; c != NULL; c = c->next)
2198 c->section->_raw_size -= c->count * sizeof (Elf32_External_Rela);
2204 /* This function is called via elf_link_hash_traverse to force
2205 millicode symbols local so they do not end up as globals in the
2206 dynamic symbol table. We ought to be able to do this in
2207 adjust_dynamic_symbol, but our adjust_dynamic_symbol is not called
2208 for all dynamic symbols. Arguably, this is a bug in
2209 elf_adjust_dynamic_symbol. */
2212 clobber_millicode_symbols (h, info)
2213 struct elf_link_hash_entry *h;
2214 struct bfd_link_info *info;
2216 /* We only want to remove these from the dynamic symbol table.
2217 Therefore we do not leave ELF_LINK_FORCED_LOCAL set. */
2218 if (h->type == STT_PARISC_MILLI)
2220 unsigned short oldflags = h->elf_link_hash_flags;
2221 h->elf_link_hash_flags |= ELF_LINK_FORCED_LOCAL;
2222 elf32_hppa_hide_symbol (info, h);
2223 h->elf_link_hash_flags &= ~ELF_LINK_FORCED_LOCAL;
2224 h->elf_link_hash_flags |= oldflags & ELF_LINK_FORCED_LOCAL;
2229 /* Set the sizes of the dynamic sections. */
2232 elf32_hppa_size_dynamic_sections (output_bfd, info)
2234 struct bfd_link_info *info;
2236 struct elf32_hppa_link_hash_table *hplink;
2243 hplink = hppa_link_hash_table (info);
2244 dynobj = hplink->root.dynobj;
2248 if (hplink->root.dynamic_sections_created)
2250 /* Set the contents of the .interp section to the interpreter. */
2253 s = bfd_get_section_by_name (dynobj, ".interp");
2256 s->_raw_size = sizeof ELF_DYNAMIC_INTERPRETER;
2257 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
2260 /* Force millicode symbols local. */
2261 elf_link_hash_traverse (&hplink->root,
2262 clobber_millicode_symbols,
2267 /* Run through the function symbols, looking for any that are
2268 PIC, and allocate space for the necessary .plt entries so
2269 that %r19 will be set up. */
2271 elf_link_hash_traverse (&hplink->root,
2272 hppa_handle_PIC_calls,
2276 /* Set up .got and .plt offsets for local syms. */
2277 for (i = info->input_bfds; i; i = i->link_next)
2279 bfd_signed_vma *local_got;
2280 bfd_signed_vma *end_local_got;
2281 bfd_signed_vma *local_plt;
2282 bfd_signed_vma *end_local_plt;
2283 bfd_size_type locsymcount;
2284 Elf_Internal_Shdr *symtab_hdr;
2287 if (bfd_get_flavour (i) != bfd_target_elf_flavour)
2290 local_got = elf_local_got_refcounts (i);
2294 symtab_hdr = &elf_tdata (i)->symtab_hdr;
2295 locsymcount = symtab_hdr->sh_info;
2296 end_local_got = local_got + locsymcount;
2298 srel = hplink->srelgot;
2299 for (; local_got < end_local_got; ++local_got)
2303 *local_got = s->_raw_size;
2304 s->_raw_size += GOT_ENTRY_SIZE;
2306 srel->_raw_size += sizeof (Elf32_External_Rela);
2309 *local_got = (bfd_vma) -1;
2312 local_plt = end_local_got;
2313 end_local_plt = local_plt + locsymcount;
2314 if (! hplink->root.dynamic_sections_created)
2316 /* Won't be used, but be safe. */
2317 for (; local_plt < end_local_plt; ++local_plt)
2318 *local_plt = (bfd_vma) -1;
2323 srel = hplink->srelplt;
2324 for (; local_plt < end_local_plt; ++local_plt)
2328 *local_plt = s->_raw_size;
2329 s->_raw_size += PLT_ENTRY_SIZE;
2331 srel->_raw_size += sizeof (Elf32_External_Rela);
2334 *local_plt = (bfd_vma) -1;
2339 /* Allocate global sym .plt and .got entries. Also discard all
2341 elf_link_hash_traverse (&hplink->root,
2342 allocate_plt_and_got_and_discard_relocs,
2345 /* The check_relocs and adjust_dynamic_symbol entry points have
2346 determined the sizes of the various dynamic sections. Allocate
2350 for (s = dynobj->sections; s != NULL; s = s->next)
2352 if ((s->flags & SEC_LINKER_CREATED) == 0)
2355 if (s == hplink->splt)
2357 if (hplink->need_plt_stub)
2359 /* Make space for the plt stub at the end of the .plt
2360 section. We want this stub right at the end, up
2361 against the .got section. */
2362 int gotalign = bfd_section_alignment (dynobj, hplink->sgot);
2363 int pltalign = bfd_section_alignment (dynobj, s);
2366 if (gotalign > pltalign)
2367 bfd_set_section_alignment (dynobj, s, gotalign);
2368 mask = ((bfd_size_type) 1 << gotalign) - 1;
2369 s->_raw_size = (s->_raw_size + sizeof (plt_stub) + mask) & ~mask;
2372 else if (s == hplink->sgot)
2374 else if (strncmp (bfd_get_section_name (dynobj, s), ".rela", 5) == 0)
2376 if (s->_raw_size != 0)
2379 const char *outname;
2381 /* Remember whether there are any reloc sections other
2383 if (s != hplink->srelplt)
2386 /* If this relocation section applies to a read only
2387 section, then we probably need a DT_TEXTREL entry. */
2388 outname = bfd_get_section_name (output_bfd,
2390 target = bfd_get_section_by_name (output_bfd, outname + 5);
2392 && (target->flags & SEC_READONLY) != 0
2393 && (target->flags & SEC_ALLOC) != 0)
2396 /* We use the reloc_count field as a counter if we need
2397 to copy relocs into the output file. */
2403 /* It's not one of our sections, so don't allocate space. */
2407 if (s->_raw_size == 0)
2409 /* If we don't need this section, strip it from the
2410 output file. This is mostly to handle .rela.bss and
2411 .rela.plt. We must create both sections in
2412 create_dynamic_sections, because they must be created
2413 before the linker maps input sections to output
2414 sections. The linker does that before
2415 adjust_dynamic_symbol is called, and it is that
2416 function which decides whether anything needs to go
2417 into these sections. */
2418 _bfd_strip_section_from_output (info, s);
2422 /* Allocate memory for the section contents. Zero it, because
2423 we may not fill in all the reloc sections. */
2424 s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->_raw_size);
2425 if (s->contents == NULL && s->_raw_size != 0)
2429 if (hplink->root.dynamic_sections_created)
2431 /* Like IA-64 and HPPA64, always create a DT_PLTGOT. It
2432 actually has nothing to do with the PLT, it is how we
2433 communicate the LTP value of a load module to the dynamic
2435 if (! bfd_elf32_add_dynamic_entry (info, DT_PLTGOT, 0))
2438 /* Add some entries to the .dynamic section. We fill in the
2439 values later, in elf32_hppa_finish_dynamic_sections, but we
2440 must add the entries now so that we get the correct size for
2441 the .dynamic section. The DT_DEBUG entry is filled in by the
2442 dynamic linker and used by the debugger. */
2445 if (! bfd_elf32_add_dynamic_entry (info, DT_DEBUG, 0))
2449 if (hplink->srelplt->_raw_size != 0)
2451 if (! bfd_elf32_add_dynamic_entry (info, DT_PLTRELSZ, 0)
2452 || ! bfd_elf32_add_dynamic_entry (info, DT_PLTREL, DT_RELA)
2453 || ! bfd_elf32_add_dynamic_entry (info, DT_JMPREL, 0))
2459 if (! bfd_elf32_add_dynamic_entry (info, DT_RELA, 0)
2460 || ! bfd_elf32_add_dynamic_entry (info, DT_RELASZ, 0)
2461 || ! bfd_elf32_add_dynamic_entry (info, DT_RELAENT,
2462 sizeof (Elf32_External_Rela)))
2468 if (! bfd_elf32_add_dynamic_entry (info, DT_TEXTREL, 0))
2470 info->flags |= DF_TEXTREL;
2477 /* External entry points for sizing and building linker stubs. */
2479 /* Determine and set the size of the stub section for a final link.
2481 The basic idea here is to examine all the relocations looking for
2482 PC-relative calls to a target that is unreachable with a "bl"
2486 elf32_hppa_size_stubs (output_bfd, stub_bfd, info, multi_subspace, group_size,
2487 add_stub_section, layout_sections_again)
2490 struct bfd_link_info *info;
2491 boolean multi_subspace;
2492 bfd_signed_vma group_size;
2493 asection * (*add_stub_section) PARAMS ((const char *, asection *));
2494 void (*layout_sections_again) PARAMS ((void));
2498 asection **input_list, **list;
2499 Elf_Internal_Sym *local_syms, **all_local_syms;
2500 unsigned int bfd_indx, bfd_count;
2501 int top_id, top_index;
2502 struct elf32_hppa_link_hash_table *hplink;
2503 bfd_size_type stub_group_size;
2504 boolean stubs_always_before_branch;
2505 boolean stub_changed = 0;
2508 hplink = hppa_link_hash_table (info);
2510 /* Stash our params away. */
2511 hplink->stub_bfd = stub_bfd;
2512 hplink->multi_subspace = multi_subspace;
2513 hplink->add_stub_section = add_stub_section;
2514 hplink->layout_sections_again = layout_sections_again;
2515 stubs_always_before_branch = group_size < 0;
2517 stub_group_size = -group_size;
2519 stub_group_size = group_size;
2520 if (stub_group_size == 1)
2522 /* Default values. */
2523 stub_group_size = 8000000;
2524 if (hplink->has_17bit_branch || hplink->multi_subspace)
2525 stub_group_size = 250000;
2526 if (hplink->has_12bit_branch)
2527 stub_group_size = 7812;
2530 /* Count the number of input BFDs and find the top input section id. */
2531 for (input_bfd = info->input_bfds, bfd_count = 0, top_id = 0;
2533 input_bfd = input_bfd->link_next)
2536 for (section = input_bfd->sections;
2538 section = section->next)
2540 if (top_id < section->id)
2541 top_id = section->id;
2546 = (struct map_stub *) bfd_zmalloc (sizeof (struct map_stub) * (top_id + 1));
2547 if (hplink->stub_group == NULL)
2550 /* Make a list of input sections for each output section included in
2553 We can't use output_bfd->section_count here to find the top output
2554 section index as some sections may have been removed, and
2555 _bfd_strip_section_from_output doesn't renumber the indices. */
2556 for (section = output_bfd->sections, top_index = 0;
2558 section = section->next)
2560 if (top_index < section->index)
2561 top_index = section->index;
2565 = (asection **) bfd_malloc (sizeof (asection *) * (top_index + 1));
2566 if (input_list == NULL)
2569 /* For sections we aren't interested in, mark their entries with a
2570 value we can check later. */
2571 list = input_list + top_index;
2573 *list = bfd_abs_section_ptr;
2574 while (list-- != input_list);
2576 for (section = output_bfd->sections;
2578 section = section->next)
2580 if ((section->flags & SEC_CODE) != 0)
2581 input_list[section->index] = NULL;
2584 /* Now actually build the lists. */
2585 for (input_bfd = info->input_bfds;
2587 input_bfd = input_bfd->link_next)
2589 for (section = input_bfd->sections;
2591 section = section->next)
2593 if (section->output_section != NULL
2594 && section->output_section->owner == output_bfd
2595 && section->output_section->index <= top_index)
2597 list = input_list + section->output_section->index;
2598 if (*list != bfd_abs_section_ptr)
2600 /* Steal the link_sec pointer for our list. */
2601 #define PREV_SEC(sec) (hplink->stub_group[(sec)->id].link_sec)
2602 /* This happens to make the list in reverse order,
2603 which is what we want. */
2604 PREV_SEC (section) = *list;
2611 /* See whether we can group stub sections together. Grouping stub
2612 sections may result in fewer stubs. More importantly, we need to
2613 put all .init* and .fini* stubs at the beginning of the .init or
2614 .fini output sections respectively, because glibc splits the
2615 _init and _fini functions into multiple parts. Putting a stub in
2616 the middle of a function is not a good idea. */
2617 list = input_list + top_index;
2620 asection *tail = *list;
2621 if (tail == bfd_abs_section_ptr)
2623 while (tail != NULL)
2627 bfd_size_type total;
2630 if (tail->_cooked_size)
2631 total = tail->_cooked_size;
2633 total = tail->_raw_size;
2634 while ((prev = PREV_SEC (curr)) != NULL
2635 && ((total += curr->output_offset - prev->output_offset)
2639 /* OK, the size from the start of CURR to the end is less
2640 than 250000 bytes and thus can be handled by one stub
2641 section. (or the tail section is itself larger than
2642 250000 bytes, in which case we may be toast.)
2643 We should really be keeping track of the total size of
2644 stubs added here, as stubs contribute to the final output
2645 section size. That's a little tricky, and this way will
2646 only break if stubs added total more than 12144 bytes, or
2647 1518 long branch stubs. It seems unlikely for more than
2648 1518 different functions to be called, especially from
2649 code only 250000 bytes long. */
2652 prev = PREV_SEC (tail);
2653 /* Set up this stub group. */
2654 hplink->stub_group[tail->id].link_sec = curr;
2656 while (tail != curr && (tail = prev) != NULL);
2658 /* But wait, there's more! Input sections up to 250000
2659 bytes before the stub section can be handled by it too. */
2660 if (!stubs_always_before_branch)
2664 && ((total += tail->output_offset - prev->output_offset)
2668 prev = PREV_SEC (tail);
2669 hplink->stub_group[tail->id].link_sec = curr;
2675 while (list-- != input_list);
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. */
2683 = (Elf_Internal_Sym **) bfd_zmalloc (sizeof (Elf_Internal_Sym *)
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
2691 for (input_bfd = info->input_bfds, bfd_indx = 0;
2693 input_bfd = input_bfd->link_next, bfd_indx++)
2695 Elf_Internal_Shdr *symtab_hdr;
2696 Elf_Internal_Sym *isym;
2697 Elf32_External_Sym *ext_syms, *esym, *end_sy;
2699 /* We'll need the symbol table in a second. */
2700 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
2701 if (symtab_hdr->sh_info == 0)
2704 /* We need an array of the local symbols attached to the input bfd.
2705 Unfortunately, we're going to have to read & swap them in. */
2706 local_syms = (Elf_Internal_Sym *)
2707 bfd_malloc (symtab_hdr->sh_info * sizeof (Elf_Internal_Sym));
2708 if (local_syms == NULL)
2710 goto error_ret_free_local;
2712 all_local_syms[bfd_indx] = local_syms;
2713 ext_syms = (Elf32_External_Sym *)
2714 bfd_malloc (symtab_hdr->sh_info * sizeof (Elf32_External_Sym));
2715 if (ext_syms == NULL)
2717 goto error_ret_free_local;
2720 if (bfd_seek (input_bfd, symtab_hdr->sh_offset, SEEK_SET) != 0
2721 || (bfd_read (ext_syms, 1,
2722 (symtab_hdr->sh_info * sizeof (Elf32_External_Sym)),
2724 != (symtab_hdr->sh_info * sizeof (Elf32_External_Sym))))
2727 goto error_ret_free_local;
2730 /* Swap the local symbols in. */
2733 for (end_sy = esym + symtab_hdr->sh_info; esym < end_sy; esym++, isym++)
2734 bfd_elf32_swap_symbol_in (input_bfd, esym, isym);
2736 /* Now we can free the external symbols. */
2739 #if ! LONG_BRANCH_PIC_IN_SHLIB
2740 /* If this is a shared link, find all the stub reloc sections. */
2742 for (section = input_bfd->sections;
2744 section = section->next)
2747 asection *reloc_sec;
2749 name = bfd_malloc (strlen (section->name)
2750 + sizeof STUB_SUFFIX
2754 sprintf (name, ".rela%s%s", section->name, STUB_SUFFIX);
2755 reloc_sec = bfd_get_section_by_name (hplink->root.dynobj, name);
2756 hplink->stub_group[section->id].reloc_sec = reloc_sec;
2761 if (info->shared && hplink->multi_subspace)
2763 struct elf_link_hash_entry **sym_hashes;
2764 struct elf_link_hash_entry **end_hashes;
2765 unsigned int symcount;
2767 symcount = (symtab_hdr->sh_size / sizeof (Elf32_External_Sym)
2768 - symtab_hdr->sh_info);
2769 sym_hashes = elf_sym_hashes (input_bfd);
2770 end_hashes = sym_hashes + symcount;
2772 /* Look through the global syms for functions; We need to
2773 build export stubs for all globally visible functions. */
2774 for (; sym_hashes < end_hashes; sym_hashes++)
2776 struct elf32_hppa_link_hash_entry *hash;
2778 hash = (struct elf32_hppa_link_hash_entry *) *sym_hashes;
2780 while (hash->elf.root.type == bfd_link_hash_indirect
2781 || hash->elf.root.type == bfd_link_hash_warning)
2782 hash = ((struct elf32_hppa_link_hash_entry *)
2783 hash->elf.root.u.i.link);
2785 /* At this point in the link, undefined syms have been
2786 resolved, so we need to check that the symbol was
2787 defined in this BFD. */
2788 if ((hash->elf.root.type == bfd_link_hash_defined
2789 || hash->elf.root.type == bfd_link_hash_defweak)
2790 && hash->elf.type == STT_FUNC
2791 && hash->elf.root.u.def.section->output_section != NULL
2792 && (hash->elf.root.u.def.section->output_section->owner
2794 && hash->elf.root.u.def.section->owner == input_bfd
2795 && (hash->elf.elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR)
2796 && !(hash->elf.elf_link_hash_flags & ELF_LINK_FORCED_LOCAL)
2797 && ELF_ST_VISIBILITY (hash->elf.other) == STV_DEFAULT)
2800 const char *stub_name;
2801 struct elf32_hppa_stub_hash_entry *stub_entry;
2803 sec = hash->elf.root.u.def.section;
2804 stub_name = hash->elf.root.root.string;
2805 stub_entry = hppa_stub_hash_lookup (&hplink->stub_hash_table,
2808 if (stub_entry == NULL)
2810 stub_entry = hppa_add_stub (stub_name, sec, hplink);
2812 goto error_ret_free_local;
2814 stub_entry->target_value = hash->elf.root.u.def.value;
2815 stub_entry->target_section = hash->elf.root.u.def.section;
2816 stub_entry->stub_type = hppa_stub_export;
2817 stub_entry->h = hash;
2822 (*_bfd_error_handler) (_("%s: duplicate export stub %s"),
2823 bfd_get_filename (input_bfd),
2835 for (input_bfd = info->input_bfds, bfd_indx = 0;
2837 input_bfd = input_bfd->link_next, bfd_indx++)
2839 Elf_Internal_Shdr *symtab_hdr;
2841 /* We'll need the symbol table in a second. */
2842 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
2843 if (symtab_hdr->sh_info == 0)
2846 local_syms = all_local_syms[bfd_indx];
2848 /* Walk over each section attached to the input bfd. */
2849 for (section = input_bfd->sections;
2851 section = section->next)
2853 Elf_Internal_Shdr *input_rel_hdr;
2854 Elf32_External_Rela *external_relocs, *erelaend, *erela;
2855 Elf_Internal_Rela *internal_relocs, *irelaend, *irela;
2857 /* If there aren't any relocs, then there's nothing more
2859 if ((section->flags & SEC_RELOC) == 0
2860 || section->reloc_count == 0)
2863 /* If this section is a link-once section that will be
2864 discarded, then don't create any stubs. */
2865 if (section->output_section == NULL
2866 || section->output_section->owner != output_bfd)
2869 /* Allocate space for the external relocations. */
2871 = ((Elf32_External_Rela *)
2872 bfd_malloc (section->reloc_count
2873 * sizeof (Elf32_External_Rela)));
2874 if (external_relocs == NULL)
2876 goto error_ret_free_local;
2879 /* Likewise for the internal relocations. */
2880 internal_relocs = ((Elf_Internal_Rela *)
2881 bfd_malloc (section->reloc_count
2882 * sizeof (Elf_Internal_Rela)));
2883 if (internal_relocs == NULL)
2885 free (external_relocs);
2886 goto error_ret_free_local;
2889 /* Read in the external relocs. */
2890 input_rel_hdr = &elf_section_data (section)->rel_hdr;
2891 if (bfd_seek (input_bfd, input_rel_hdr->sh_offset, SEEK_SET) != 0
2892 || bfd_read (external_relocs, 1,
2893 input_rel_hdr->sh_size,
2894 input_bfd) != input_rel_hdr->sh_size)
2896 free (external_relocs);
2897 error_ret_free_internal:
2898 free (internal_relocs);
2899 goto error_ret_free_local;
2902 /* Swap in the relocs. */
2903 erela = external_relocs;
2904 erelaend = erela + section->reloc_count;
2905 irela = internal_relocs;
2906 for (; erela < erelaend; erela++, irela++)
2907 bfd_elf32_swap_reloca_in (input_bfd, erela, irela);
2909 /* We're done with the external relocs, free them. */
2910 free (external_relocs);
2912 /* Now examine each relocation. */
2913 irela = internal_relocs;
2914 irelaend = irela + section->reloc_count;
2915 for (; irela < irelaend; irela++)
2917 unsigned int r_type, r_indx;
2918 enum elf32_hppa_stub_type stub_type;
2919 struct elf32_hppa_stub_hash_entry *stub_entry;
2922 bfd_vma destination;
2923 struct elf32_hppa_link_hash_entry *hash;
2925 const asection *id_sec;
2927 r_type = ELF32_R_TYPE (irela->r_info);
2928 r_indx = ELF32_R_SYM (irela->r_info);
2930 if (r_type >= (unsigned int) R_PARISC_UNIMPLEMENTED)
2932 bfd_set_error (bfd_error_bad_value);
2933 goto error_ret_free_internal;
2936 /* Only look for stubs on call instructions. */
2937 if (r_type != (unsigned int) R_PARISC_PCREL12F
2938 && r_type != (unsigned int) R_PARISC_PCREL17F
2939 && r_type != (unsigned int) R_PARISC_PCREL22F)
2942 /* Now determine the call target, its name, value,
2948 if (r_indx < symtab_hdr->sh_info)
2950 /* It's a local symbol. */
2951 Elf_Internal_Sym *sym;
2952 Elf_Internal_Shdr *hdr;
2954 sym = local_syms + r_indx;
2955 hdr = elf_elfsections (input_bfd)[sym->st_shndx];
2956 sym_sec = hdr->bfd_section;
2957 if (ELF_ST_TYPE (sym->st_info) != STT_SECTION)
2958 sym_value = sym->st_value;
2959 destination = (sym_value + irela->r_addend
2960 + sym_sec->output_offset
2961 + sym_sec->output_section->vma);
2965 /* It's an external symbol. */
2968 e_indx = r_indx - symtab_hdr->sh_info;
2969 hash = ((struct elf32_hppa_link_hash_entry *)
2970 elf_sym_hashes (input_bfd)[e_indx]);
2972 while (hash->elf.root.type == bfd_link_hash_indirect
2973 || hash->elf.root.type == bfd_link_hash_warning)
2974 hash = ((struct elf32_hppa_link_hash_entry *)
2975 hash->elf.root.u.i.link);
2977 if (hash->elf.root.type == bfd_link_hash_defined
2978 || hash->elf.root.type == bfd_link_hash_defweak)
2980 sym_sec = hash->elf.root.u.def.section;
2981 sym_value = hash->elf.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 (hash->elf.root.type == bfd_link_hash_undefweak)
2992 else if (hash->elf.root.type == bfd_link_hash_undefined)
2995 && !info->no_undefined
2996 && (ELF_ST_VISIBILITY (hash->elf.other)
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, hash,
3010 if (stub_type == hppa_stub_none)
3013 /* Support for grouping stub sections. */
3014 id_sec = hplink->stub_group[section->id].link_sec;
3016 /* Get the name of this stub. */
3017 stub_name = hppa_stub_name (id_sec, sym_sec, hash, irela);
3019 goto error_ret_free_internal;
3021 stub_entry = hppa_stub_hash_lookup (&hplink->stub_hash_table,
3024 if (stub_entry != NULL)
3026 /* The proper stub has already been created. */
3031 stub_entry = hppa_add_stub (stub_name, section, hplink);
3032 if (stub_entry == NULL)
3035 goto error_ret_free_local;
3038 stub_entry->target_value = sym_value;
3039 stub_entry->target_section = sym_sec;
3040 stub_entry->stub_type = stub_type;
3043 if (stub_type == hppa_stub_import)
3044 stub_entry->stub_type = hppa_stub_import_shared;
3045 else if (stub_type == hppa_stub_long_branch
3046 && (LONG_BRANCH_PIC_IN_SHLIB || hash == NULL))
3047 stub_entry->stub_type = hppa_stub_long_branch_shared;
3049 stub_entry->h = hash;
3053 /* We're done with the internal relocs, free them. */
3054 free (internal_relocs);
3061 /* OK, we've added some stubs. Find out the new size of the
3063 for (stub_sec = hplink->stub_bfd->sections;
3065 stub_sec = stub_sec->next)
3067 stub_sec->_raw_size = 0;
3068 stub_sec->_cooked_size = 0;
3070 #if ! LONG_BRANCH_PIC_IN_SHLIB
3074 for (i = top_id; i >= 0; --i)
3076 /* This will probably hit the same section many times.. */
3077 stub_sec = hplink->stub_group[i].reloc_sec;
3078 if (stub_sec != NULL)
3080 stub_sec->_raw_size = 0;
3081 stub_sec->_cooked_size = 0;
3087 bfd_hash_traverse (&hplink->stub_hash_table,
3091 /* Ask the linker to do its stuff. */
3092 (*hplink->layout_sections_again) ();
3098 error_ret_free_local:
3099 while (bfd_count-- > 0)
3100 if (all_local_syms[bfd_count])
3101 free (all_local_syms[bfd_count]);
3102 free (all_local_syms);
3107 /* For a final link, this function is called after we have sized the
3108 stubs to provide a value for __gp. */
3111 elf32_hppa_set_gp (abfd, info)
3113 struct bfd_link_info *info;
3115 struct elf32_hppa_link_hash_table *hplink;
3116 struct elf_link_hash_entry *h;
3120 hplink = hppa_link_hash_table (info);
3121 h = elf_link_hash_lookup (&hplink->root, "$global$",
3122 false, false, false);
3125 && (h->root.type == bfd_link_hash_defined
3126 || h->root.type == bfd_link_hash_defweak))
3128 gp_val = h->root.u.def.value;
3129 sec = h->root.u.def.section;
3133 /* Choose to point our LTP at, in this order, one of .plt, .got,
3134 or .data, if these sections exist. In the case of choosing
3135 .plt try to make the LTP ideal for addressing anywhere in the
3136 .plt or .got with a 14 bit signed offset. Typically, the end
3137 of the .plt is the start of the .got, so choose .plt + 0x2000
3138 if either the .plt or .got is larger than 0x2000. If both
3139 the .plt and .got are smaller than 0x2000, choose the end of
3140 the .plt section. */
3145 gp_val = sec->_raw_size;
3147 || (hplink->sgot && hplink->sgot->_raw_size > 0x2000))
3158 /* We know we don't have a .plt. If .got is large,
3160 if (sec->_raw_size > 0x2000)
3165 /* No .plt or .got. Who cares what the LTP is? */
3166 sec = bfd_get_section_by_name (abfd, ".data");
3172 h->root.type = bfd_link_hash_defined;
3173 h->root.u.def.value = gp_val;
3175 h->root.u.def.section = sec;
3177 h->root.u.def.section = bfd_abs_section_ptr;
3181 if (sec != NULL && sec->output_section != NULL)
3182 gp_val += sec->output_section->vma + sec->output_offset;
3184 elf_gp (abfd) = gp_val;
3188 /* Build all the stubs associated with the current output file. The
3189 stubs are kept in a hash table attached to the main linker hash
3190 table. We also set up the .plt entries for statically linked PIC
3191 functions here. This function is called via hppaelf_finish in the
3195 elf32_hppa_build_stubs (info)
3196 struct bfd_link_info *info;
3199 struct bfd_hash_table *table;
3200 struct elf32_hppa_link_hash_table *hplink;
3202 hplink = hppa_link_hash_table (info);
3204 for (stub_sec = hplink->stub_bfd->sections;
3206 stub_sec = stub_sec->next)
3210 /* Allocate memory to hold the linker stubs. */
3211 size = stub_sec->_raw_size;
3212 stub_sec->contents = (unsigned char *) bfd_zalloc (hplink->stub_bfd,
3214 if (stub_sec->contents == NULL && size != 0)
3216 stub_sec->_raw_size = 0;
3219 /* Build the stubs as directed by the stub hash table. */
3220 table = &hplink->stub_hash_table;
3221 bfd_hash_traverse (table, hppa_build_one_stub, info);
3226 /* Perform a final link. */
3229 elf32_hppa_final_link (abfd, info)
3231 struct bfd_link_info *info;
3235 /* Invoke the regular ELF linker to do all the work. */
3236 if (!bfd_elf32_bfd_final_link (abfd, info))
3239 /* If we're producing a final executable, sort the contents of the
3240 unwind section. Magic section names, but this is much safer than
3241 having elf32_hppa_relocate_section remember where SEGREL32 relocs
3242 occurred. Consider what happens if someone inept creates a
3243 linker script that puts unwind information in .text. */
3244 s = bfd_get_section_by_name (abfd, ".PARISC.unwind");
3250 size = s->_raw_size;
3251 contents = bfd_malloc (size);
3252 if (contents == NULL)
3255 if (! bfd_get_section_contents (abfd, s, contents, (file_ptr) 0, size))
3258 qsort (contents, size / 16, 16, hppa_unwind_entry_compare);
3260 if (! bfd_set_section_contents (abfd, s, contents, (file_ptr) 0, size))
3266 /* Record the lowest address for the data and text segments. */
3269 hppa_record_segment_addr (abfd, section, data)
3270 bfd *abfd ATTRIBUTE_UNUSED;
3274 struct elf32_hppa_link_hash_table *hplink;
3276 hplink = (struct elf32_hppa_link_hash_table *) data;
3278 if ((section->flags & (SEC_ALLOC | SEC_LOAD)) == (SEC_ALLOC | SEC_LOAD))
3280 bfd_vma value = section->vma - section->filepos;
3282 if ((section->flags & SEC_READONLY) != 0)
3284 if (value < hplink->text_segment_base)
3285 hplink->text_segment_base = value;
3289 if (value < hplink->data_segment_base)
3290 hplink->data_segment_base = value;
3295 /* Perform a relocation as part of a final link. */
3297 static bfd_reloc_status_type
3298 final_link_relocate (input_section, contents, rel, value, hplink, sym_sec, h)
3299 asection *input_section;
3301 const Elf_Internal_Rela *rel;
3303 struct elf32_hppa_link_hash_table *hplink;
3305 struct elf32_hppa_link_hash_entry *h;
3308 unsigned int r_type = ELF32_R_TYPE (rel->r_info);
3309 reloc_howto_type *howto = elf_hppa_howto_table + r_type;
3310 int r_format = howto->bitsize;
3311 enum hppa_reloc_field_selector_type_alt r_field;
3312 bfd *input_bfd = input_section->owner;
3313 bfd_vma offset = rel->r_offset;
3314 bfd_vma max_branch_offset = 0;
3315 bfd_byte *hit_data = contents + offset;
3316 bfd_signed_vma addend = rel->r_addend;
3318 struct elf32_hppa_stub_hash_entry *stub_entry = NULL;
3321 if (r_type == R_PARISC_NONE)
3322 return bfd_reloc_ok;
3324 insn = bfd_get_32 (input_bfd, hit_data);
3326 /* Find out where we are and where we're going. */
3327 location = (offset +
3328 input_section->output_offset +
3329 input_section->output_section->vma);
3333 case R_PARISC_PCREL12F:
3334 case R_PARISC_PCREL17F:
3335 case R_PARISC_PCREL22F:
3336 /* If this is a call to a function defined in another dynamic
3337 library, or if it is a call to a PIC function in the same
3338 object, or if this is a shared link and it is a call to a
3339 weak symbol which may or may not be in the same object, then
3340 find the import stub in the stub hash. */
3342 || sym_sec->output_section == NULL
3344 && ((h->maybe_pic_call
3345 && !(input_section->flags & SEC_HAS_GOT_REF))
3346 || (h->elf.root.type == bfd_link_hash_defweak
3347 && h->elf.dynindx != -1
3348 && h->elf.plt.offset != (bfd_vma) -1))))
3350 stub_entry = hppa_get_stub_entry (input_section, sym_sec,
3352 if (stub_entry != NULL)
3354 value = (stub_entry->stub_offset
3355 + stub_entry->stub_sec->output_offset
3356 + stub_entry->stub_sec->output_section->vma);
3359 else if (sym_sec == NULL && h != NULL
3360 && h->elf.root.type == bfd_link_hash_undefweak)
3362 /* It's OK if undefined weak. Calls to undefined weak
3363 symbols behave as if the "called" function
3364 immediately returns. We can thus call to a weak
3365 function without first checking whether the function
3371 return bfd_reloc_notsupported;
3375 case R_PARISC_PCREL21L:
3376 case R_PARISC_PCREL17C:
3377 case R_PARISC_PCREL17R:
3378 case R_PARISC_PCREL14R:
3379 case R_PARISC_PCREL14F:
3380 /* Make it a pc relative offset. */
3385 case R_PARISC_DPREL21L:
3386 case R_PARISC_DPREL14R:
3387 case R_PARISC_DPREL14F:
3388 /* For all the DP relative relocations, we need to examine the symbol's
3389 section. If it's a code section, then "data pointer relative" makes
3390 no sense. In that case we don't adjust the "value", and for 21 bit
3391 addil instructions, we change the source addend register from %dp to
3392 %r0. This situation commonly arises when a variable's "constness"
3393 is declared differently from the way the variable is defined. For
3394 instance: "extern int foo" with foo defined as "const int foo". */
3395 if (sym_sec == NULL)
3397 if ((sym_sec->flags & SEC_CODE) != 0)
3399 if ((insn & ((0x3f << 26) | (0x1f << 21)))
3400 == (((int) OP_ADDIL << 26) | (27 << 21)))
3402 insn &= ~ (0x1f << 21);
3403 #if 1 /* debug them. */
3404 (*_bfd_error_handler)
3405 (_("%s(%s+0x%lx): fixing %s"),
3406 bfd_get_filename (input_bfd),
3407 input_section->name,
3408 (long) rel->r_offset,
3412 /* Now try to make things easy for the dynamic linker. */
3418 case R_PARISC_DLTIND21L:
3419 case R_PARISC_DLTIND14R:
3420 case R_PARISC_DLTIND14F:
3421 value -= elf_gp (input_section->output_section->owner);
3424 case R_PARISC_SEGREL32:
3425 if ((sym_sec->flags & SEC_CODE) != 0)
3426 value -= hplink->text_segment_base;
3428 value -= hplink->data_segment_base;
3437 case R_PARISC_DIR32:
3438 case R_PARISC_DIR14F:
3439 case R_PARISC_DIR17F:
3440 case R_PARISC_PCREL17C:
3441 case R_PARISC_PCREL14F:
3442 case R_PARISC_DPREL14F:
3443 case R_PARISC_PLABEL32:
3444 case R_PARISC_DLTIND14F:
3445 case R_PARISC_SEGBASE:
3446 case R_PARISC_SEGREL32:
3450 case R_PARISC_DIR21L:
3451 case R_PARISC_PCREL21L:
3452 case R_PARISC_DPREL21L:
3453 case R_PARISC_PLABEL21L:
3454 case R_PARISC_DLTIND21L:
3458 case R_PARISC_DIR17R:
3459 case R_PARISC_PCREL17R:
3460 case R_PARISC_DIR14R:
3461 case R_PARISC_PCREL14R:
3462 case R_PARISC_DPREL14R:
3463 case R_PARISC_PLABEL14R:
3464 case R_PARISC_DLTIND14R:
3468 case R_PARISC_PCREL12F:
3469 case R_PARISC_PCREL17F:
3470 case R_PARISC_PCREL22F:
3473 if (r_type == (unsigned int) R_PARISC_PCREL17F)
3475 max_branch_offset = (1 << (17-1)) << 2;
3477 else if (r_type == (unsigned int) R_PARISC_PCREL12F)
3479 max_branch_offset = (1 << (12-1)) << 2;
3483 max_branch_offset = (1 << (22-1)) << 2;
3486 /* sym_sec is NULL on undefined weak syms or when shared on
3487 undefined syms. We've already checked for a stub for the
3488 shared undefined case. */
3489 if (sym_sec == NULL)
3492 /* If the branch is out of reach, then redirect the
3493 call to the local stub for this function. */
3494 if (value + addend + max_branch_offset >= 2*max_branch_offset)
3496 stub_entry = hppa_get_stub_entry (input_section, sym_sec,
3498 if (stub_entry == NULL)
3499 return bfd_reloc_notsupported;
3501 /* Munge up the value and addend so that we call the stub
3502 rather than the procedure directly. */
3503 value = (stub_entry->stub_offset
3504 + stub_entry->stub_sec->output_offset
3505 + stub_entry->stub_sec->output_section->vma
3511 /* Something we don't know how to handle. */
3513 return bfd_reloc_notsupported;
3516 /* Make sure we can reach the stub. */
3517 if (max_branch_offset != 0
3518 && value + addend + max_branch_offset >= 2*max_branch_offset)
3520 (*_bfd_error_handler)
3521 (_("%s(%s+0x%lx): cannot reach %s, recompile with -ffunction-sections"),
3522 bfd_get_filename (input_bfd),
3523 input_section->name,
3524 (long) rel->r_offset,
3525 stub_entry->root.string);
3526 return bfd_reloc_notsupported;
3529 val = hppa_field_adjust (value, addend, r_field);
3533 case R_PARISC_PCREL12F:
3534 case R_PARISC_PCREL17C:
3535 case R_PARISC_PCREL17F:
3536 case R_PARISC_PCREL17R:
3537 case R_PARISC_PCREL22F:
3538 case R_PARISC_DIR17F:
3539 case R_PARISC_DIR17R:
3540 /* This is a branch. Divide the offset by four.
3541 Note that we need to decide whether it's a branch or
3542 otherwise by inspecting the reloc. Inspecting insn won't
3543 work as insn might be from a .word directive. */
3551 insn = hppa_rebuild_insn (insn, val, r_format);
3553 /* Update the instruction word. */
3554 bfd_put_32 (input_bfd, (bfd_vma) insn, hit_data);
3555 return bfd_reloc_ok;
3558 /* Relocate an HPPA ELF section. */
3561 elf32_hppa_relocate_section (output_bfd, info, input_bfd, input_section,
3562 contents, relocs, local_syms, local_sections)
3564 struct bfd_link_info *info;
3566 asection *input_section;
3568 Elf_Internal_Rela *relocs;
3569 Elf_Internal_Sym *local_syms;
3570 asection **local_sections;
3573 bfd_vma *local_got_offsets;
3574 struct elf32_hppa_link_hash_table *hplink;
3575 Elf_Internal_Shdr *symtab_hdr;
3576 Elf_Internal_Rela *rel;
3577 Elf_Internal_Rela *relend;
3580 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
3582 hplink = hppa_link_hash_table (info);
3583 dynobj = hplink->root.dynobj;
3584 local_got_offsets = elf_local_got_offsets (input_bfd);
3588 relend = relocs + input_section->reloc_count;
3589 for (; rel < relend; rel++)
3591 unsigned int r_type;
3592 reloc_howto_type *howto;
3593 unsigned int r_symndx;
3594 struct elf32_hppa_link_hash_entry *h;
3595 Elf_Internal_Sym *sym;
3598 bfd_reloc_status_type r;
3599 const char *sym_name;
3603 r_type = ELF32_R_TYPE (rel->r_info);
3604 if (r_type >= (unsigned int) R_PARISC_UNIMPLEMENTED)
3606 bfd_set_error (bfd_error_bad_value);
3609 if (r_type == (unsigned int) R_PARISC_GNU_VTENTRY
3610 || r_type == (unsigned int) R_PARISC_GNU_VTINHERIT)
3613 r_symndx = ELF32_R_SYM (rel->r_info);
3615 if (info->relocateable)
3617 /* This is a relocateable link. We don't have to change
3618 anything, unless the reloc is against a section symbol,
3619 in which case we have to adjust according to where the
3620 section symbol winds up in the output section. */
3621 if (r_symndx < symtab_hdr->sh_info)
3623 sym = local_syms + r_symndx;
3624 if (ELF_ST_TYPE (sym->st_info) == STT_SECTION)
3626 sym_sec = local_sections[r_symndx];
3627 rel->r_addend += sym_sec->output_offset;
3633 /* This is a final link. */
3637 if (r_symndx < symtab_hdr->sh_info)
3639 /* This is a local symbol, h defaults to NULL. */
3640 sym = local_syms + r_symndx;
3641 sym_sec = local_sections[r_symndx];
3642 relocation = ((ELF_ST_TYPE (sym->st_info) == STT_SECTION
3643 ? 0 : sym->st_value)
3644 + sym_sec->output_offset
3645 + sym_sec->output_section->vma);
3651 /* It's a global; Find its entry in the link hash. */
3652 indx = r_symndx - symtab_hdr->sh_info;
3653 h = ((struct elf32_hppa_link_hash_entry *)
3654 elf_sym_hashes (input_bfd)[indx]);
3655 while (h->elf.root.type == bfd_link_hash_indirect
3656 || h->elf.root.type == bfd_link_hash_warning)
3657 h = (struct elf32_hppa_link_hash_entry *) h->elf.root.u.i.link;
3660 if (h->elf.root.type == bfd_link_hash_defined
3661 || h->elf.root.type == bfd_link_hash_defweak)
3663 sym_sec = h->elf.root.u.def.section;
3664 /* If sym_sec->output_section is NULL, then it's a
3665 symbol defined in a shared library. */
3666 if (sym_sec->output_section != NULL)
3667 relocation = (h->elf.root.u.def.value
3668 + sym_sec->output_offset
3669 + sym_sec->output_section->vma);
3671 else if (h->elf.root.type == bfd_link_hash_undefweak)
3673 else if (info->shared && !info->no_undefined
3674 && ELF_ST_VISIBILITY (h->elf.other) == STV_DEFAULT
3675 && h->elf.type != STT_PARISC_MILLI)
3678 if (!((*info->callbacks->undefined_symbol)
3679 (info, h->elf.root.root.string, input_bfd,
3680 input_section, rel->r_offset, false)))
3685 if (!((*info->callbacks->undefined_symbol)
3686 (info, h->elf.root.root.string, input_bfd,
3687 input_section, rel->r_offset, true)))
3692 /* Do any required modifications to the relocation value, and
3693 determine what types of dynamic info we need to output, if
3698 case R_PARISC_DLTIND14F:
3699 case R_PARISC_DLTIND14R:
3700 case R_PARISC_DLTIND21L:
3701 /* Relocation is to the entry for this symbol in the global
3707 off = h->elf.got.offset;
3708 dyn = hplink->root.dynamic_sections_created;
3709 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info, &h->elf))
3711 /* This is actually a static link, or it is a
3712 -Bsymbolic link and the symbol is defined
3713 locally, or the symbol was forced to be local
3714 because of a version file. We must initialize
3715 this entry in the global offset table. Since the
3716 offset must always be a multiple of 4, we use the
3717 least significant bit to record whether we have
3718 initialized it already.
3720 When doing a dynamic link, we create a .rela.got
3721 relocation entry to initialize the value. This
3722 is done in the finish_dynamic_symbol routine. */
3727 bfd_put_32 (output_bfd, relocation,
3728 hplink->sgot->contents + off);
3729 h->elf.got.offset |= 1;
3735 /* Local symbol case. */
3736 if (local_got_offsets == NULL)
3739 off = local_got_offsets[r_symndx];
3741 /* The offset must always be a multiple of 4. We use
3742 the least significant bit to record whether we have
3743 already generated the necessary reloc. */
3748 bfd_put_32 (output_bfd, relocation,
3749 hplink->sgot->contents + off);
3753 /* Output a dynamic relocation for this GOT
3754 entry. In this case it is relative to the
3755 base of the object because the symbol index
3757 Elf_Internal_Rela outrel;
3758 asection *srelgot = hplink->srelgot;
3760 outrel.r_offset = (off
3761 + hplink->sgot->output_offset
3762 + hplink->sgot->output_section->vma);
3763 outrel.r_info = ELF32_R_INFO (0, R_PARISC_DIR32);
3764 outrel.r_addend = relocation;
3765 bfd_elf32_swap_reloca_out (output_bfd, &outrel,
3766 ((Elf32_External_Rela *)
3768 + srelgot->reloc_count));
3769 ++srelgot->reloc_count;
3772 local_got_offsets[r_symndx] |= 1;
3776 if (off >= (bfd_vma) -2)
3779 /* Add the base of the GOT to the relocation value. */
3781 + hplink->sgot->output_offset
3782 + hplink->sgot->output_section->vma);
3785 case R_PARISC_SEGREL32:
3786 /* If this is the first SEGREL relocation, then initialize
3787 the segment base values. */
3788 if (hplink->text_segment_base == (bfd_vma) -1)
3789 bfd_map_over_sections (output_bfd,
3790 hppa_record_segment_addr,
3794 case R_PARISC_PLABEL14R:
3795 case R_PARISC_PLABEL21L:
3796 case R_PARISC_PLABEL32:
3797 if (hplink->root.dynamic_sections_created)
3799 /* If we have a global symbol with a PLT slot, then
3800 redirect this relocation to it. */
3803 off = h->elf.plt.offset;
3804 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, info, &h->elf))
3806 /* In a non-shared link, adjust_dynamic_symbols
3807 isn't called for symbols forced local. We
3808 need to write out the plt entry here. */
3813 bfd_put_32 (output_bfd,
3815 hplink->splt->contents + off);
3816 bfd_put_32 (output_bfd,
3817 elf_gp (hplink->splt->output_section->owner),
3818 hplink->splt->contents + off + 4);
3819 h->elf.plt.offset |= 1;
3825 bfd_vma *local_plt_offsets;
3827 if (local_got_offsets == NULL)
3830 local_plt_offsets = local_got_offsets + symtab_hdr->sh_info;
3831 off = local_plt_offsets[r_symndx];
3833 /* As for the local .got entry case, we use the last
3834 bit to record whether we've already initialised
3835 this local .plt entry. */
3840 bfd_put_32 (output_bfd,
3842 hplink->splt->contents + off);
3843 bfd_put_32 (output_bfd,
3844 elf_gp (hplink->splt->output_section->owner),
3845 hplink->splt->contents + off + 4);
3849 /* Output a dynamic IPLT relocation for this
3851 Elf_Internal_Rela outrel;
3852 asection *srelplt = hplink->srelplt;
3854 outrel.r_offset = (off
3855 + hplink->splt->output_offset
3856 + hplink->splt->output_section->vma);
3857 outrel.r_info = ELF32_R_INFO (0, R_PARISC_IPLT);
3858 outrel.r_addend = relocation;
3859 bfd_elf32_swap_reloca_out (output_bfd, &outrel,
3860 ((Elf32_External_Rela *)
3862 + srelplt->reloc_count));
3863 ++srelplt->reloc_count;
3866 local_plt_offsets[r_symndx] |= 1;
3870 if (off >= (bfd_vma) -2)
3873 /* PLABELs contain function pointers. Relocation is to
3874 the entry for the function in the .plt. The magic +2
3875 offset signals to $$dyncall that the function pointer
3876 is in the .plt and thus has a gp pointer too.
3877 Exception: Undefined PLABELs should have a value of
3880 || (h->elf.root.type != bfd_link_hash_undefweak
3881 && h->elf.root.type != bfd_link_hash_undefined))
3884 + hplink->splt->output_offset
3885 + hplink->splt->output_section->vma
3890 /* Fall through and possibly emit a dynamic relocation. */
3892 case R_PARISC_DIR17F:
3893 case R_PARISC_DIR17R:
3894 case R_PARISC_DIR14F:
3895 case R_PARISC_DIR14R:
3896 case R_PARISC_DIR21L:
3897 case R_PARISC_DPREL14F:
3898 case R_PARISC_DPREL14R:
3899 case R_PARISC_DPREL21L:
3900 case R_PARISC_DIR32:
3901 /* The reloc types handled here and this conditional
3902 expression must match the code in ..check_relocs and
3903 ..discard_relocs. ie. We need exactly the same condition
3904 as in ..check_relocs, with some extra conditions (dynindx
3905 test in this case) to cater for relocs removed by
3906 ..discard_relocs. If you squint, the non-shared test
3907 here does indeed match the one in ..check_relocs, the
3908 difference being that here we test DEF_DYNAMIC as well as
3909 !DEF_REGULAR. All common syms end up with !DEF_REGULAR,
3910 which is why we can't use just that test here.
3911 Conversely, DEF_DYNAMIC can't be used in check_relocs as
3912 there all files have not been loaded. */
3914 && (input_section->flags & SEC_ALLOC) != 0
3915 && (IS_ABSOLUTE_RELOC (r_type)
3917 && h->elf.dynindx != -1
3919 || (h->elf.elf_link_hash_flags
3920 & ELF_LINK_HASH_DEF_REGULAR) == 0))))
3922 && (input_section->flags & SEC_ALLOC) != 0
3924 && h->elf.dynindx != -1
3925 && (h->elf.elf_link_hash_flags & ELF_LINK_NON_GOT_REF) == 0
3926 && (((h->elf.elf_link_hash_flags
3927 & ELF_LINK_HASH_DEF_DYNAMIC) != 0
3928 && (h->elf.elf_link_hash_flags
3929 & ELF_LINK_HASH_DEF_REGULAR) == 0)
3930 || h->elf.root.type == bfd_link_hash_undefweak
3931 || h->elf.root.type == bfd_link_hash_undefined)))
3933 Elf_Internal_Rela outrel;
3936 /* When generating a shared object, these relocations
3937 are copied into the output file to be resolved at run
3944 name = (bfd_elf_string_from_elf_section
3946 elf_elfheader (input_bfd)->e_shstrndx,
3947 elf_section_data (input_section)->rel_hdr.sh_name));
3950 sreloc = bfd_get_section_by_name (dynobj, name);
3955 outrel.r_offset = rel->r_offset;
3956 outrel.r_addend = rel->r_addend;
3958 if (elf_section_data (input_section)->stab_info != NULL)
3962 off = (_bfd_stab_section_offset
3963 (output_bfd, &hplink->root.stab_info,
3965 &elf_section_data (input_section)->stab_info,
3967 if (off == (bfd_vma) -1)
3969 outrel.r_offset = off;
3972 outrel.r_offset += (input_section->output_offset
3973 + input_section->output_section->vma);
3977 memset (&outrel, 0, sizeof (outrel));
3980 && h->elf.dynindx != -1
3982 || !IS_ABSOLUTE_RELOC (r_type)
3985 || (h->elf.elf_link_hash_flags
3986 & ELF_LINK_HASH_DEF_REGULAR) == 0))
3988 outrel.r_info = ELF32_R_INFO (h->elf.dynindx, r_type);
3990 else /* It's a local symbol, or one marked to become local. */
3994 /* Add the absolute offset of the symbol. */
3995 outrel.r_addend += relocation;
3997 /* Global plabels need to be processed by the
3998 dynamic linker so that functions have at most one
3999 fptr. For this reason, we need to differentiate
4000 between global and local plabels, which we do by
4001 providing the function symbol for a global plabel
4002 reloc, and no symbol for local plabels. */
4005 && sym_sec->output_section != NULL
4006 && ! bfd_is_abs_section (sym_sec))
4008 indx = elf_section_data (sym_sec->output_section)->dynindx;
4009 /* We are turning this relocation into one
4010 against a section symbol, so subtract out the
4011 output section's address but not the offset
4012 of the input section in the output section. */
4013 outrel.r_addend -= sym_sec->output_section->vma;
4016 outrel.r_info = ELF32_R_INFO (indx, r_type);
4019 /* EH info can cause unaligned DIR32 relocs.
4020 Tweak the reloc type for the dynamic linker. */
4021 if (r_type == R_PARISC_DIR32 && (outrel.r_offset & 3) != 0)
4022 outrel.r_info = ELF32_R_INFO (ELF32_R_SYM (outrel.r_info),
4025 bfd_elf32_swap_reloca_out (output_bfd, &outrel,
4026 ((Elf32_External_Rela *)
4028 + sreloc->reloc_count));
4029 ++sreloc->reloc_count;
4037 r = final_link_relocate (input_section, contents, rel, relocation,
4038 hplink, sym_sec, h);
4040 if (r == bfd_reloc_ok)
4044 sym_name = h->elf.root.root.string;
4047 sym_name = bfd_elf_string_from_elf_section (input_bfd,
4048 symtab_hdr->sh_link,
4050 if (sym_name == NULL)
4052 if (*sym_name == '\0')
4053 sym_name = bfd_section_name (input_bfd, sym_sec);
4056 howto = elf_hppa_howto_table + r_type;
4058 if (r == bfd_reloc_undefined || r == bfd_reloc_notsupported)
4060 (*_bfd_error_handler)
4061 (_("%s(%s+0x%lx): cannot handle %s for %s"),
4062 bfd_get_filename (input_bfd),
4063 input_section->name,
4064 (long) rel->r_offset,
4070 if (!((*info->callbacks->reloc_overflow)
4071 (info, sym_name, howto->name, (bfd_vma) 0,
4072 input_bfd, input_section, rel->r_offset)))
4080 /* Comparison function for qsort to sort unwind section during a
4084 hppa_unwind_entry_compare (a, b)
4088 const bfd_byte *ap, *bp;
4089 unsigned long av, bv;
4091 ap = (const bfd_byte *) a;
4092 av = (unsigned long) ap[0] << 24;
4093 av |= (unsigned long) ap[1] << 16;
4094 av |= (unsigned long) ap[2] << 8;
4095 av |= (unsigned long) ap[3];
4097 bp = (const bfd_byte *) b;
4098 bv = (unsigned long) bp[0] << 24;
4099 bv |= (unsigned long) bp[1] << 16;
4100 bv |= (unsigned long) bp[2] << 8;
4101 bv |= (unsigned long) bp[3];
4103 return av < bv ? -1 : av > bv ? 1 : 0;
4106 /* Finish up dynamic symbol handling. We set the contents of various
4107 dynamic sections here. */
4110 elf32_hppa_finish_dynamic_symbol (output_bfd, info, h, sym)
4112 struct bfd_link_info *info;
4113 struct elf_link_hash_entry *h;
4114 Elf_Internal_Sym *sym;
4116 struct elf32_hppa_link_hash_table *hplink;
4119 hplink = hppa_link_hash_table (info);
4120 dynobj = hplink->root.dynobj;
4122 if (h->plt.offset != (bfd_vma) -1)
4126 if (h->plt.offset & 1)
4129 /* This symbol has an entry in the procedure linkage table. Set
4132 The format of a plt entry is
4137 if (h->root.type == bfd_link_hash_defined
4138 || h->root.type == bfd_link_hash_defweak)
4140 value = h->root.u.def.value;
4141 if (h->root.u.def.section->output_section != NULL)
4142 value += (h->root.u.def.section->output_offset
4143 + h->root.u.def.section->output_section->vma);
4146 if (! ((struct elf32_hppa_link_hash_entry *) h)->pic_call)
4148 Elf_Internal_Rela rel;
4150 /* Create a dynamic IPLT relocation for this entry. */
4151 rel.r_offset = (h->plt.offset
4152 + hplink->splt->output_offset
4153 + hplink->splt->output_section->vma);
4154 if (! ((struct elf32_hppa_link_hash_entry *) h)->plt_abs
4155 && h->dynindx != -1)
4157 /* To support lazy linking, the function pointer is
4158 initialised to point to a special stub stored at the
4159 end of the .plt. This is not done for plt entries
4160 with a base-relative dynamic relocation. */
4161 value = (hplink->splt->output_offset
4162 + hplink->splt->output_section->vma
4163 + hplink->splt->_raw_size
4166 rel.r_info = ELF32_R_INFO (h->dynindx, R_PARISC_IPLT);
4171 /* This symbol has been marked to become local, and is
4172 used by a plabel so must be kept in the .plt. */
4173 rel.r_info = ELF32_R_INFO (0, R_PARISC_IPLT);
4174 rel.r_addend = value;
4177 bfd_elf32_swap_reloca_out (hplink->splt->output_section->owner,
4179 ((Elf32_External_Rela *)
4180 hplink->srelplt->contents
4181 + hplink->srelplt->reloc_count));
4182 hplink->srelplt->reloc_count++;
4185 bfd_put_32 (hplink->splt->owner,
4187 hplink->splt->contents + h->plt.offset);
4188 bfd_put_32 (hplink->splt->owner,
4189 elf_gp (hplink->splt->output_section->owner),
4190 hplink->splt->contents + h->plt.offset + 4);
4191 if (PLABEL_PLT_ENTRY_SIZE != PLT_ENTRY_SIZE
4192 && ((struct elf32_hppa_link_hash_entry *) h)->plabel
4193 && h->dynindx != -1)
4195 memset (hplink->splt->contents + h->plt.offset + 8,
4196 0, PLABEL_PLT_ENTRY_SIZE - PLT_ENTRY_SIZE);
4199 if ((h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0)
4201 /* Mark the symbol as undefined, rather than as defined in
4202 the .plt section. Leave the value alone. */
4203 sym->st_shndx = SHN_UNDEF;
4207 if (h->got.offset != (bfd_vma) -1)
4209 Elf_Internal_Rela rel;
4211 /* This symbol has an entry in the global offset table. Set it
4214 rel.r_offset = ((h->got.offset &~ (bfd_vma) 1)
4215 + hplink->sgot->output_offset
4216 + hplink->sgot->output_section->vma);
4218 /* If this is a -Bsymbolic link and the symbol is defined
4219 locally or was forced to be local because of a version file,
4220 we just want to emit a RELATIVE reloc. The entry in the
4221 global offset table will already have been initialized in the
4222 relocate_section function. */
4224 && (info->symbolic || h->dynindx == -1)
4225 && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR))
4227 rel.r_info = ELF32_R_INFO (0, R_PARISC_DIR32);
4228 rel.r_addend = (h->root.u.def.value
4229 + h->root.u.def.section->output_offset
4230 + h->root.u.def.section->output_section->vma);
4234 if ((h->got.offset & 1) != 0)
4236 bfd_put_32 (output_bfd, (bfd_vma) 0,
4237 hplink->sgot->contents + h->got.offset);
4238 rel.r_info = ELF32_R_INFO (h->dynindx, R_PARISC_DIR32);
4242 bfd_elf32_swap_reloca_out (output_bfd, &rel,
4243 ((Elf32_External_Rela *)
4244 hplink->srelgot->contents
4245 + hplink->srelgot->reloc_count));
4246 ++hplink->srelgot->reloc_count;
4249 if ((h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_COPY) != 0)
4252 Elf_Internal_Rela rel;
4254 /* This symbol needs a copy reloc. Set it up. */
4256 if (! (h->dynindx != -1
4257 && (h->root.type == bfd_link_hash_defined
4258 || h->root.type == bfd_link_hash_defweak)))
4261 s = hplink->srelbss;
4263 rel.r_offset = (h->root.u.def.value
4264 + h->root.u.def.section->output_offset
4265 + h->root.u.def.section->output_section->vma);
4267 rel.r_info = ELF32_R_INFO (h->dynindx, R_PARISC_COPY);
4268 bfd_elf32_swap_reloca_out (output_bfd, &rel,
4269 ((Elf32_External_Rela *) s->contents
4274 /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. */
4275 if (h->root.root.string[0] == '_'
4276 && (strcmp (h->root.root.string, "_DYNAMIC") == 0
4277 || strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0))
4279 sym->st_shndx = SHN_ABS;
4285 /* Finish up the dynamic sections. */
4288 elf32_hppa_finish_dynamic_sections (output_bfd, info)
4290 struct bfd_link_info *info;
4293 struct elf32_hppa_link_hash_table *hplink;
4296 hplink = hppa_link_hash_table (info);
4297 dynobj = hplink->root.dynobj;
4299 sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
4301 if (hplink->root.dynamic_sections_created)
4303 Elf32_External_Dyn *dyncon, *dynconend;
4308 dyncon = (Elf32_External_Dyn *) sdyn->contents;
4309 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->_raw_size);
4310 for (; dyncon < dynconend; dyncon++)
4312 Elf_Internal_Dyn dyn;
4315 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
4323 /* Use PLTGOT to set the GOT register. */
4324 dyn.d_un.d_ptr = elf_gp (output_bfd);
4325 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
4329 s = hplink->srelplt;
4330 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
4331 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
4335 s = hplink->srelplt;
4336 if (s->_cooked_size != 0)
4337 dyn.d_un.d_val = s->_cooked_size;
4339 dyn.d_un.d_val = s->_raw_size;
4340 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
4346 if (hplink->sgot != NULL && hplink->sgot->_raw_size != 0)
4348 /* Fill in the first entry in the global offset table.
4349 We use it to point to our dynamic section, if we have one. */
4350 bfd_put_32 (output_bfd,
4352 ? sdyn->output_section->vma + sdyn->output_offset
4354 hplink->sgot->contents);
4356 /* The second entry is reserved for use by the dynamic linker. */
4357 memset (hplink->sgot->contents + GOT_ENTRY_SIZE, 0, GOT_ENTRY_SIZE);
4359 /* Set .got entry size. */
4360 elf_section_data (hplink->sgot->output_section)
4361 ->this_hdr.sh_entsize = GOT_ENTRY_SIZE;
4364 if (hplink->splt != NULL && hplink->splt->_raw_size != 0)
4366 /* Set plt entry size. */
4367 elf_section_data (hplink->splt->output_section)
4368 ->this_hdr.sh_entsize = PLT_ENTRY_SIZE;
4370 if (hplink->need_plt_stub)
4372 /* Set up the .plt stub. */
4373 memcpy (hplink->splt->contents
4374 + hplink->splt->_raw_size - sizeof (plt_stub),
4375 plt_stub, sizeof (plt_stub));
4377 if ((hplink->splt->output_offset
4378 + hplink->splt->output_section->vma
4379 + hplink->splt->_raw_size)
4380 != (hplink->sgot->output_offset
4381 + hplink->sgot->output_section->vma))
4383 (*_bfd_error_handler)
4384 (_(".got section not immediately after .plt section"));
4393 /* Tweak the OSABI field of the elf header. */
4396 elf32_hppa_post_process_headers (abfd, link_info)
4398 struct bfd_link_info *link_info ATTRIBUTE_UNUSED;
4400 Elf_Internal_Ehdr * i_ehdrp;
4402 i_ehdrp = elf_elfheader (abfd);
4404 if (strcmp (bfd_get_target (abfd), "elf32-hppa-linux") == 0)
4406 i_ehdrp->e_ident[EI_OSABI] = ELFOSABI_LINUX;
4410 i_ehdrp->e_ident[EI_OSABI] = ELFOSABI_HPUX;
4414 /* Called when writing out an object file to decide the type of a
4417 elf32_hppa_elf_get_symbol_type (elf_sym, type)
4418 Elf_Internal_Sym *elf_sym;
4421 if (ELF_ST_TYPE (elf_sym->st_info) == STT_PARISC_MILLI)
4422 return STT_PARISC_MILLI;
4427 /* Misc BFD support code. */
4428 #define bfd_elf32_bfd_is_local_label_name elf_hppa_is_local_label_name
4429 #define bfd_elf32_bfd_reloc_type_lookup elf_hppa_reloc_type_lookup
4430 #define elf_info_to_howto elf_hppa_info_to_howto
4431 #define elf_info_to_howto_rel elf_hppa_info_to_howto_rel
4433 /* Stuff for the BFD linker. */
4434 #define bfd_elf32_bfd_final_link elf32_hppa_final_link
4435 #define bfd_elf32_bfd_link_hash_table_create elf32_hppa_link_hash_table_create
4436 #define elf_backend_add_symbol_hook elf32_hppa_add_symbol_hook
4437 #define elf_backend_adjust_dynamic_symbol elf32_hppa_adjust_dynamic_symbol
4438 #define elf_backend_check_relocs elf32_hppa_check_relocs
4439 #define elf_backend_create_dynamic_sections elf32_hppa_create_dynamic_sections
4440 #define elf_backend_fake_sections elf_hppa_fake_sections
4441 #define elf_backend_relocate_section elf32_hppa_relocate_section
4442 #define elf_backend_hide_symbol elf32_hppa_hide_symbol
4443 #define elf_backend_finish_dynamic_symbol elf32_hppa_finish_dynamic_symbol
4444 #define elf_backend_finish_dynamic_sections elf32_hppa_finish_dynamic_sections
4445 #define elf_backend_size_dynamic_sections elf32_hppa_size_dynamic_sections
4446 #define elf_backend_gc_mark_hook elf32_hppa_gc_mark_hook
4447 #define elf_backend_gc_sweep_hook elf32_hppa_gc_sweep_hook
4448 #define elf_backend_object_p elf32_hppa_object_p
4449 #define elf_backend_final_write_processing elf_hppa_final_write_processing
4450 #define elf_backend_post_process_headers elf32_hppa_post_process_headers
4451 #define elf_backend_get_symbol_type elf32_hppa_elf_get_symbol_type
4453 #define elf_backend_can_gc_sections 1
4454 #define elf_backend_plt_alignment 2
4455 #define elf_backend_want_got_plt 0
4456 #define elf_backend_plt_readonly 0
4457 #define elf_backend_want_plt_sym 0
4458 #define elf_backend_got_header_size 8
4460 #define TARGET_BIG_SYM bfd_elf32_hppa_vec
4461 #define TARGET_BIG_NAME "elf32-hppa"
4462 #define ELF_ARCH bfd_arch_hppa
4463 #define ELF_MACHINE_CODE EM_PARISC
4464 #define ELF_MAXPAGESIZE 0x1000
4466 #include "elf32-target.h"
4468 #undef TARGET_BIG_SYM
4469 #define TARGET_BIG_SYM bfd_elf32_hppa_linux_vec
4470 #undef TARGET_BIG_NAME
4471 #define TARGET_BIG_NAME "elf32-hppa-linux"
4473 #define INCLUDED_TARGET_FILE 1
4474 #include "elf32-target.h"