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 /* We don't need to copy certain PC- or GP-relative dynamic relocs
138 into a shared object's dynamic section. All the relocs of the
139 limited class we are interested in, are absolute. */
140 #ifndef RELATIVE_DYNRELOCS
141 #define RELATIVE_DYNRELOCS 0
142 #define IS_ABSOLUTE_RELOC(r_type) 1
145 enum elf32_hppa_stub_type {
146 hppa_stub_long_branch,
147 hppa_stub_long_branch_shared,
149 hppa_stub_import_shared,
154 struct elf32_hppa_stub_hash_entry {
156 /* Base hash table entry structure. */
157 struct bfd_hash_entry root;
159 /* The stub section. */
162 /* Offset within stub_sec of the beginning of this stub. */
165 /* Given the symbol's value and its section we can determine its final
166 value when building the stubs (so the stub knows where to jump. */
167 bfd_vma target_value;
168 asection *target_section;
170 enum elf32_hppa_stub_type stub_type;
172 /* The symbol table entry, if any, that this was derived from. */
173 struct elf32_hppa_link_hash_entry *h;
175 /* Where this stub is being called from, or, in the case of combined
176 stub sections, the first input section in the group. */
180 struct elf32_hppa_link_hash_entry {
182 struct elf_link_hash_entry elf;
184 /* A pointer to the most recently used stub hash entry against this
186 struct elf32_hppa_stub_hash_entry *stub_cache;
188 /* Used to count relocations for delayed sizing of relocation
190 struct elf32_hppa_dyn_reloc_entry {
192 /* Next relocation in the chain. */
193 struct elf32_hppa_dyn_reloc_entry *next;
195 /* The input section of the reloc. */
198 /* Number of relocs copied in this section. */
201 #if RELATIVE_DYNRELOCS
202 /* Number of relative relocs copied for the input section. */
203 bfd_size_type relative_count;
207 /* Set during a static link if we detect a function is PIC. */
208 unsigned int maybe_pic_call:1;
210 /* Set if the only reason we need a .plt entry is for a non-PIC to
211 PIC function call. */
212 unsigned int pic_call:1;
214 /* Set if this symbol is used by a plabel reloc. */
215 unsigned int plabel:1;
217 /* Set if this symbol is an init or fini function and thus should
218 use an absolute reloc. */
219 unsigned int plt_abs:1;
222 struct elf32_hppa_link_hash_table {
224 /* The main hash table. */
225 struct elf_link_hash_table elf;
227 /* The stub hash table. */
228 struct bfd_hash_table stub_hash_table;
230 /* Linker stub bfd. */
233 /* Linker call-backs. */
234 asection * (*add_stub_section) PARAMS ((const char *, asection *));
235 void (*layout_sections_again) PARAMS ((void));
237 /* Array to keep track of which stub sections have been created, and
238 information on stub grouping. */
240 /* This is the section to which stubs in the group will be
243 /* The stub section. */
247 /* Short-cuts to get to dynamic linker sections. */
255 /* Used during a final link to store the base of the text and data
256 segments so that we can perform SEGREL relocations. */
257 bfd_vma text_segment_base;
258 bfd_vma data_segment_base;
260 /* Whether we support multiple sub-spaces for shared libs. */
261 unsigned int multi_subspace:1;
263 /* Flags set when PCREL12F and PCREL17F branches detected. Used to
264 select suitable defaults for the stub group size. */
265 unsigned int has_12bit_branch:1;
266 unsigned int has_17bit_branch:1;
268 /* Set if we need a .plt stub to support lazy dynamic linking. */
269 unsigned int need_plt_stub:1;
272 /* Various hash macros and functions. */
273 #define hppa_link_hash_table(p) \
274 ((struct elf32_hppa_link_hash_table *) ((p)->hash))
276 #define hppa_stub_hash_lookup(table, string, create, copy) \
277 ((struct elf32_hppa_stub_hash_entry *) \
278 bfd_hash_lookup ((table), (string), (create), (copy)))
280 static struct bfd_hash_entry *stub_hash_newfunc
281 PARAMS ((struct bfd_hash_entry *, struct bfd_hash_table *, const char *));
283 static struct bfd_hash_entry *hppa_link_hash_newfunc
284 PARAMS ((struct bfd_hash_entry *, struct bfd_hash_table *, const char *));
286 static struct bfd_link_hash_table *elf32_hppa_link_hash_table_create
289 /* Stub handling functions. */
290 static char *hppa_stub_name
291 PARAMS ((const asection *, const asection *,
292 const struct elf32_hppa_link_hash_entry *,
293 const Elf_Internal_Rela *));
295 static struct elf32_hppa_stub_hash_entry *hppa_get_stub_entry
296 PARAMS ((const asection *, const asection *,
297 struct elf32_hppa_link_hash_entry *,
298 const Elf_Internal_Rela *,
299 struct elf32_hppa_link_hash_table *));
301 static struct elf32_hppa_stub_hash_entry *hppa_add_stub
302 PARAMS ((const char *, asection *, struct elf32_hppa_link_hash_table *));
304 static enum elf32_hppa_stub_type hppa_type_of_stub
305 PARAMS ((asection *, const Elf_Internal_Rela *,
306 struct elf32_hppa_link_hash_entry *, bfd_vma));
308 static boolean hppa_build_one_stub
309 PARAMS ((struct bfd_hash_entry *, PTR));
311 static boolean hppa_size_one_stub
312 PARAMS ((struct bfd_hash_entry *, PTR));
314 /* BFD and elf backend functions. */
315 static boolean elf32_hppa_object_p PARAMS ((bfd *));
317 static boolean elf32_hppa_add_symbol_hook
318 PARAMS ((bfd *, struct bfd_link_info *, const Elf_Internal_Sym *,
319 const char **, flagword *, asection **, bfd_vma *));
321 static boolean elf32_hppa_create_dynamic_sections
322 PARAMS ((bfd *, struct bfd_link_info *));
324 static void elf32_hppa_copy_indirect_symbol
325 PARAMS ((struct elf_link_hash_entry *, struct elf_link_hash_entry *));
327 static boolean elf32_hppa_check_relocs
328 PARAMS ((bfd *, struct bfd_link_info *,
329 asection *, const Elf_Internal_Rela *));
331 static asection *elf32_hppa_gc_mark_hook
332 PARAMS ((bfd *, struct bfd_link_info *, Elf_Internal_Rela *,
333 struct elf_link_hash_entry *, Elf_Internal_Sym *));
335 static boolean elf32_hppa_gc_sweep_hook
336 PARAMS ((bfd *, struct bfd_link_info *,
337 asection *, const Elf_Internal_Rela *));
339 static void elf32_hppa_hide_symbol
340 PARAMS ((struct bfd_link_info *, struct elf_link_hash_entry *));
342 static boolean elf32_hppa_adjust_dynamic_symbol
343 PARAMS ((struct bfd_link_info *, struct elf_link_hash_entry *));
345 static boolean hppa_handle_PIC_calls
346 PARAMS ((struct elf_link_hash_entry *, PTR));
348 static boolean allocate_dynrelocs
349 PARAMS ((struct elf_link_hash_entry *, PTR));
351 static boolean readonly_dynrelocs
352 PARAMS ((struct elf_link_hash_entry *, PTR));
354 static boolean clobber_millicode_symbols
355 PARAMS ((struct elf_link_hash_entry *, struct bfd_link_info *));
357 static boolean elf32_hppa_size_dynamic_sections
358 PARAMS ((bfd *, struct bfd_link_info *));
360 static boolean elf32_hppa_final_link
361 PARAMS ((bfd *, struct bfd_link_info *));
363 static void hppa_record_segment_addr
364 PARAMS ((bfd *, asection *, PTR));
366 static bfd_reloc_status_type final_link_relocate
367 PARAMS ((asection *, bfd_byte *, const Elf_Internal_Rela *,
368 bfd_vma, struct elf32_hppa_link_hash_table *, asection *,
369 struct elf32_hppa_link_hash_entry *));
371 static boolean elf32_hppa_relocate_section
372 PARAMS ((bfd *, struct bfd_link_info *, bfd *, asection *,
373 bfd_byte *, Elf_Internal_Rela *, Elf_Internal_Sym *, asection **));
375 static int hppa_unwind_entry_compare
376 PARAMS ((const PTR, const PTR));
378 static boolean elf32_hppa_finish_dynamic_symbol
379 PARAMS ((bfd *, struct bfd_link_info *,
380 struct elf_link_hash_entry *, Elf_Internal_Sym *));
382 static enum elf_reloc_type_class elf32_hppa_reloc_type_class
383 PARAMS ((const Elf_Internal_Rela *));
385 static boolean elf32_hppa_finish_dynamic_sections
386 PARAMS ((bfd *, struct bfd_link_info *));
388 static void elf32_hppa_post_process_headers
389 PARAMS ((bfd *, struct bfd_link_info *));
391 static int elf32_hppa_elf_get_symbol_type
392 PARAMS ((Elf_Internal_Sym *, int));
394 /* Assorted hash table functions. */
396 /* Initialize an entry in the stub hash table. */
398 static struct bfd_hash_entry *
399 stub_hash_newfunc (entry, table, string)
400 struct bfd_hash_entry *entry;
401 struct bfd_hash_table *table;
404 /* Allocate the structure if it has not already been allocated by a
408 entry = bfd_hash_allocate (table,
409 sizeof (struct elf32_hppa_stub_hash_entry));
414 /* Call the allocation method of the superclass. */
415 entry = bfd_hash_newfunc (entry, table, string);
418 struct elf32_hppa_stub_hash_entry *eh;
420 /* Initialize the local fields. */
421 eh = (struct elf32_hppa_stub_hash_entry *) entry;
424 eh->target_value = 0;
425 eh->target_section = NULL;
426 eh->stub_type = hppa_stub_long_branch;
434 /* Initialize an entry in the link hash table. */
436 static struct bfd_hash_entry *
437 hppa_link_hash_newfunc (entry, table, string)
438 struct bfd_hash_entry *entry;
439 struct bfd_hash_table *table;
442 /* Allocate the structure if it has not already been allocated by a
446 entry = bfd_hash_allocate (table,
447 sizeof (struct elf32_hppa_link_hash_entry));
452 /* Call the allocation method of the superclass. */
453 entry = _bfd_elf_link_hash_newfunc (entry, table, string);
456 struct elf32_hppa_link_hash_entry *eh;
458 /* Initialize the local fields. */
459 eh = (struct elf32_hppa_link_hash_entry *) entry;
460 eh->stub_cache = NULL;
461 eh->dyn_relocs = NULL;
462 eh->maybe_pic_call = 0;
471 /* Create the derived linker hash table. The PA ELF port uses the derived
472 hash table to keep information specific to the PA ELF linker (without
473 using static variables). */
475 static struct bfd_link_hash_table *
476 elf32_hppa_link_hash_table_create (abfd)
479 struct elf32_hppa_link_hash_table *ret;
480 bfd_size_type amt = sizeof (*ret);
482 ret = (struct elf32_hppa_link_hash_table *) bfd_alloc (abfd, amt);
486 if (!_bfd_elf_link_hash_table_init (&ret->elf, abfd, hppa_link_hash_newfunc))
488 bfd_release (abfd, ret);
492 /* Init the stub hash table too. */
493 if (!bfd_hash_table_init (&ret->stub_hash_table, stub_hash_newfunc))
496 ret->stub_bfd = NULL;
497 ret->add_stub_section = NULL;
498 ret->layout_sections_again = NULL;
499 ret->stub_group = NULL;
506 ret->text_segment_base = (bfd_vma) -1;
507 ret->data_segment_base = (bfd_vma) -1;
508 ret->multi_subspace = 0;
509 ret->has_12bit_branch = 0;
510 ret->has_17bit_branch = 0;
511 ret->need_plt_stub = 0;
513 return &ret->elf.root;
516 /* Build a name for an entry in the stub hash table. */
519 hppa_stub_name (input_section, sym_sec, hash, rel)
520 const asection *input_section;
521 const asection *sym_sec;
522 const struct elf32_hppa_link_hash_entry *hash;
523 const Elf_Internal_Rela *rel;
530 len = 8 + 1 + strlen (hash->elf.root.root.string) + 1 + 8 + 1;
531 stub_name = bfd_malloc (len);
532 if (stub_name != NULL)
534 sprintf (stub_name, "%08x_%s+%x",
535 input_section->id & 0xffffffff,
536 hash->elf.root.root.string,
537 (int) rel->r_addend & 0xffffffff);
542 len = 8 + 1 + 8 + 1 + 8 + 1 + 8 + 1;
543 stub_name = bfd_malloc (len);
544 if (stub_name != NULL)
546 sprintf (stub_name, "%08x_%x:%x+%x",
547 input_section->id & 0xffffffff,
548 sym_sec->id & 0xffffffff,
549 (int) ELF32_R_SYM (rel->r_info) & 0xffffffff,
550 (int) rel->r_addend & 0xffffffff);
556 /* Look up an entry in the stub hash. Stub entries are cached because
557 creating the stub name takes a bit of time. */
559 static struct elf32_hppa_stub_hash_entry *
560 hppa_get_stub_entry (input_section, sym_sec, hash, rel, htab)
561 const asection *input_section;
562 const asection *sym_sec;
563 struct elf32_hppa_link_hash_entry *hash;
564 const Elf_Internal_Rela *rel;
565 struct elf32_hppa_link_hash_table *htab;
567 struct elf32_hppa_stub_hash_entry *stub_entry;
568 const asection *id_sec;
570 /* If this input section is part of a group of sections sharing one
571 stub section, then use the id of the first section in the group.
572 Stub names need to include a section id, as there may well be
573 more than one stub used to reach say, printf, and we need to
574 distinguish between them. */
575 id_sec = htab->stub_group[input_section->id].link_sec;
577 if (hash != NULL && hash->stub_cache != NULL
578 && hash->stub_cache->h == hash
579 && hash->stub_cache->id_sec == id_sec)
581 stub_entry = hash->stub_cache;
587 stub_name = hppa_stub_name (id_sec, sym_sec, hash, rel);
588 if (stub_name == NULL)
591 stub_entry = hppa_stub_hash_lookup (&htab->stub_hash_table,
592 stub_name, false, false);
593 if (stub_entry == NULL)
595 if (hash == NULL || hash->elf.root.type != bfd_link_hash_undefweak)
596 (*_bfd_error_handler) (_("%s(%s+0x%lx): cannot find stub entry %s"),
597 bfd_archive_filename (input_section->owner),
599 (long) rel->r_offset,
605 hash->stub_cache = stub_entry;
614 /* Add a new stub entry to the stub hash. Not all fields of the new
615 stub entry are initialised. */
617 static struct elf32_hppa_stub_hash_entry *
618 hppa_add_stub (stub_name, section, htab)
619 const char *stub_name;
621 struct elf32_hppa_link_hash_table *htab;
625 struct elf32_hppa_stub_hash_entry *stub_entry;
627 link_sec = htab->stub_group[section->id].link_sec;
628 stub_sec = htab->stub_group[section->id].stub_sec;
629 if (stub_sec == NULL)
631 stub_sec = htab->stub_group[link_sec->id].stub_sec;
632 if (stub_sec == NULL)
637 len = strlen (link_sec->name) + sizeof (STUB_SUFFIX);
638 s_name = bfd_alloc (htab->stub_bfd, len);
642 strcpy (s_name, link_sec->name);
643 strcpy (s_name + len - sizeof (STUB_SUFFIX), STUB_SUFFIX);
644 stub_sec = (*htab->add_stub_section) (s_name, link_sec);
645 if (stub_sec == NULL)
647 htab->stub_group[link_sec->id].stub_sec = stub_sec;
649 htab->stub_group[section->id].stub_sec = stub_sec;
652 /* Enter this entry into the linker stub hash table. */
653 stub_entry = hppa_stub_hash_lookup (&htab->stub_hash_table, stub_name,
655 if (stub_entry == NULL)
657 (*_bfd_error_handler) (_("%s: cannot create stub entry %s"),
658 bfd_archive_filename (section->owner),
663 stub_entry->stub_sec = stub_sec;
664 stub_entry->stub_offset = 0;
665 stub_entry->id_sec = link_sec;
669 /* Determine the type of stub needed, if any, for a call. */
671 static enum elf32_hppa_stub_type
672 hppa_type_of_stub (input_sec, rel, hash, destination)
674 const Elf_Internal_Rela *rel;
675 struct elf32_hppa_link_hash_entry *hash;
679 bfd_vma branch_offset;
680 bfd_vma max_branch_offset;
684 && (((hash->elf.root.type == bfd_link_hash_defined
685 || hash->elf.root.type == bfd_link_hash_defweak)
686 && hash->elf.root.u.def.section->output_section == NULL)
687 || (hash->elf.root.type == bfd_link_hash_defweak
688 && hash->elf.dynindx != -1
689 && hash->elf.plt.offset != (bfd_vma) -1)
690 || hash->elf.root.type == bfd_link_hash_undefweak
691 || hash->elf.root.type == bfd_link_hash_undefined
692 || (hash->maybe_pic_call && !(input_sec->flags & SEC_HAS_GOT_REF))))
694 /* If output_section is NULL, then it's a symbol defined in a
695 shared library. We will need an import stub. Decide between
696 hppa_stub_import and hppa_stub_import_shared later. For
697 shared links we need stubs for undefined or weak syms too;
698 They will presumably be resolved by the dynamic linker. */
699 return hppa_stub_import;
702 /* Determine where the call point is. */
703 location = (input_sec->output_offset
704 + input_sec->output_section->vma
707 branch_offset = destination - location - 8;
708 r_type = ELF32_R_TYPE (rel->r_info);
710 /* Determine if a long branch stub is needed. parisc branch offsets
711 are relative to the second instruction past the branch, ie. +8
712 bytes on from the branch instruction location. The offset is
713 signed and counts in units of 4 bytes. */
714 if (r_type == (unsigned int) R_PARISC_PCREL17F)
716 max_branch_offset = (1 << (17-1)) << 2;
718 else if (r_type == (unsigned int) R_PARISC_PCREL12F)
720 max_branch_offset = (1 << (12-1)) << 2;
722 else /* R_PARISC_PCREL22F. */
724 max_branch_offset = (1 << (22-1)) << 2;
727 if (branch_offset + max_branch_offset >= 2*max_branch_offset)
728 return hppa_stub_long_branch;
730 return hppa_stub_none;
733 /* Build one linker stub as defined by the stub hash table entry GEN_ENTRY.
734 IN_ARG contains the link info pointer. */
736 #define LDIL_R1 0x20200000 /* ldil LR'XXX,%r1 */
737 #define BE_SR4_R1 0xe0202002 /* be,n RR'XXX(%sr4,%r1) */
739 #define BL_R1 0xe8200000 /* b,l .+8,%r1 */
740 #define ADDIL_R1 0x28200000 /* addil LR'XXX,%r1,%r1 */
741 #define DEPI_R1 0xd4201c1e /* depi 0,31,2,%r1 */
743 #define ADDIL_DP 0x2b600000 /* addil LR'XXX,%dp,%r1 */
744 #define LDW_R1_R21 0x48350000 /* ldw RR'XXX(%sr0,%r1),%r21 */
745 #define BV_R0_R21 0xeaa0c000 /* bv %r0(%r21) */
746 #define LDW_R1_R19 0x48330000 /* ldw RR'XXX(%sr0,%r1),%r19 */
748 #define ADDIL_R19 0x2a600000 /* addil LR'XXX,%r19,%r1 */
749 #define LDW_R1_DP 0x483b0000 /* ldw RR'XXX(%sr0,%r1),%dp */
751 #define LDSID_R21_R1 0x02a010a1 /* ldsid (%sr0,%r21),%r1 */
752 #define MTSP_R1 0x00011820 /* mtsp %r1,%sr0 */
753 #define BE_SR0_R21 0xe2a00000 /* be 0(%sr0,%r21) */
754 #define STW_RP 0x6bc23fd1 /* stw %rp,-24(%sr0,%sp) */
756 #define BL_RP 0xe8400002 /* b,l,n XXX,%rp */
757 #define NOP 0x08000240 /* nop */
758 #define LDW_RP 0x4bc23fd1 /* ldw -24(%sr0,%sp),%rp */
759 #define LDSID_RP_R1 0x004010a1 /* ldsid (%sr0,%rp),%r1 */
760 #define BE_SR0_RP 0xe0400002 /* be,n 0(%sr0,%rp) */
767 #define LDW_R1_DLT LDW_R1_R19
769 #define LDW_R1_DLT LDW_R1_DP
773 hppa_build_one_stub (gen_entry, in_arg)
774 struct bfd_hash_entry *gen_entry;
777 struct elf32_hppa_stub_hash_entry *stub_entry;
778 struct bfd_link_info *info;
779 struct elf32_hppa_link_hash_table *htab;
789 /* Massage our args to the form they really have. */
790 stub_entry = (struct elf32_hppa_stub_hash_entry *) gen_entry;
791 info = (struct bfd_link_info *) in_arg;
793 htab = hppa_link_hash_table (info);
794 stub_sec = stub_entry->stub_sec;
796 /* Make a note of the offset within the stubs for this entry. */
797 stub_entry->stub_offset = stub_sec->_raw_size;
798 loc = stub_sec->contents + stub_entry->stub_offset;
800 stub_bfd = stub_sec->owner;
802 switch (stub_entry->stub_type)
804 case hppa_stub_long_branch:
805 /* Create the long branch. A long branch is formed with "ldil"
806 loading the upper bits of the target address into a register,
807 then branching with "be" which adds in the lower bits.
808 The "be" has its delay slot nullified. */
809 sym_value = (stub_entry->target_value
810 + stub_entry->target_section->output_offset
811 + stub_entry->target_section->output_section->vma);
813 val = hppa_field_adjust (sym_value, (bfd_signed_vma) 0, e_lrsel);
814 insn = hppa_rebuild_insn ((int) LDIL_R1, val, 21);
815 bfd_put_32 (stub_bfd, insn, loc);
817 val = hppa_field_adjust (sym_value, (bfd_signed_vma) 0, e_rrsel) >> 2;
818 insn = hppa_rebuild_insn ((int) BE_SR4_R1, val, 17);
819 bfd_put_32 (stub_bfd, insn, loc + 4);
824 case hppa_stub_long_branch_shared:
825 /* Branches are relative. This is where we are going to. */
826 sym_value = (stub_entry->target_value
827 + stub_entry->target_section->output_offset
828 + stub_entry->target_section->output_section->vma);
830 /* And this is where we are coming from, more or less. */
831 sym_value -= (stub_entry->stub_offset
832 + stub_sec->output_offset
833 + stub_sec->output_section->vma);
835 bfd_put_32 (stub_bfd, (bfd_vma) BL_R1, loc);
836 val = hppa_field_adjust (sym_value, (bfd_signed_vma) -8, e_lrsel);
837 insn = hppa_rebuild_insn ((int) ADDIL_R1, val, 21);
838 bfd_put_32 (stub_bfd, insn, loc + 4);
840 val = hppa_field_adjust (sym_value, (bfd_signed_vma) -8, e_rrsel) >> 2;
841 insn = hppa_rebuild_insn ((int) BE_SR4_R1, val, 17);
842 bfd_put_32 (stub_bfd, insn, loc + 8);
846 case hppa_stub_import:
847 case hppa_stub_import_shared:
848 off = stub_entry->h->elf.plt.offset;
849 if (off >= (bfd_vma) -2)
852 off &= ~ (bfd_vma) 1;
854 + htab->splt->output_offset
855 + htab->splt->output_section->vma
856 - elf_gp (htab->splt->output_section->owner));
860 if (stub_entry->stub_type == hppa_stub_import_shared)
863 val = hppa_field_adjust (sym_value, (bfd_signed_vma) 0, e_lrsel),
864 insn = hppa_rebuild_insn ((int) insn, val, 21);
865 bfd_put_32 (stub_bfd, insn, loc);
867 /* It is critical to use lrsel/rrsel here because we are using
868 two different offsets (+0 and +4) from sym_value. If we use
869 lsel/rsel then with unfortunate sym_values we will round
870 sym_value+4 up to the next 2k block leading to a mis-match
871 between the lsel and rsel value. */
872 val = hppa_field_adjust (sym_value, (bfd_signed_vma) 0, e_rrsel);
873 insn = hppa_rebuild_insn ((int) LDW_R1_R21, val, 14);
874 bfd_put_32 (stub_bfd, insn, loc + 4);
876 if (htab->multi_subspace)
878 val = hppa_field_adjust (sym_value, (bfd_signed_vma) 4, e_rrsel);
879 insn = hppa_rebuild_insn ((int) LDW_R1_DLT, val, 14);
880 bfd_put_32 (stub_bfd, insn, loc + 8);
882 bfd_put_32 (stub_bfd, (bfd_vma) LDSID_R21_R1, loc + 12);
883 bfd_put_32 (stub_bfd, (bfd_vma) MTSP_R1, loc + 16);
884 bfd_put_32 (stub_bfd, (bfd_vma) BE_SR0_R21, loc + 20);
885 bfd_put_32 (stub_bfd, (bfd_vma) STW_RP, loc + 24);
891 bfd_put_32 (stub_bfd, (bfd_vma) BV_R0_R21, loc + 8);
892 val = hppa_field_adjust (sym_value, (bfd_signed_vma) 4, e_rrsel);
893 insn = hppa_rebuild_insn ((int) LDW_R1_DLT, val, 14);
894 bfd_put_32 (stub_bfd, insn, loc + 12);
900 && stub_entry->h != NULL
901 && stub_entry->h->pic_call)
903 /* Build the .plt entry needed to call a PIC function from
904 statically linked code. We don't need any relocs. */
906 struct elf32_hppa_link_hash_entry *eh;
909 dynobj = htab->elf.dynobj;
910 eh = (struct elf32_hppa_link_hash_entry *) stub_entry->h;
912 if (eh->elf.root.type != bfd_link_hash_defined
913 && eh->elf.root.type != bfd_link_hash_defweak)
916 value = (eh->elf.root.u.def.value
917 + eh->elf.root.u.def.section->output_offset
918 + eh->elf.root.u.def.section->output_section->vma);
920 /* Fill in the entry in the procedure linkage table.
922 The format of a plt entry is
926 bfd_put_32 (htab->splt->owner, value,
927 htab->splt->contents + off);
928 value = elf_gp (htab->splt->output_section->owner);
929 bfd_put_32 (htab->splt->owner, value,
930 htab->splt->contents + off + 4);
934 case hppa_stub_export:
935 /* Branches are relative. This is where we are going to. */
936 sym_value = (stub_entry->target_value
937 + stub_entry->target_section->output_offset
938 + stub_entry->target_section->output_section->vma);
940 /* And this is where we are coming from. */
941 sym_value -= (stub_entry->stub_offset
942 + stub_sec->output_offset
943 + stub_sec->output_section->vma);
945 if (sym_value - 8 + 0x40000 >= 0x80000)
947 (*_bfd_error_handler)
948 (_("%s(%s+0x%lx): cannot reach %s, recompile with -ffunction-sections"),
949 bfd_archive_filename (stub_entry->target_section->owner),
951 (long) stub_entry->stub_offset,
952 stub_entry->root.string);
953 bfd_set_error (bfd_error_bad_value);
957 val = hppa_field_adjust (sym_value, (bfd_signed_vma) -8, e_fsel) >> 2;
958 insn = hppa_rebuild_insn ((int) BL_RP, val, 17);
959 bfd_put_32 (stub_bfd, insn, loc);
961 bfd_put_32 (stub_bfd, (bfd_vma) NOP, loc + 4);
962 bfd_put_32 (stub_bfd, (bfd_vma) LDW_RP, loc + 8);
963 bfd_put_32 (stub_bfd, (bfd_vma) LDSID_RP_R1, loc + 12);
964 bfd_put_32 (stub_bfd, (bfd_vma) MTSP_R1, loc + 16);
965 bfd_put_32 (stub_bfd, (bfd_vma) BE_SR0_RP, loc + 20);
967 /* Point the function symbol at the stub. */
968 stub_entry->h->elf.root.u.def.section = stub_sec;
969 stub_entry->h->elf.root.u.def.value = stub_sec->_raw_size;
979 stub_sec->_raw_size += size;
1005 /* As above, but don't actually build the stub. Just bump offset so
1006 we know stub section sizes. */
1009 hppa_size_one_stub (gen_entry, in_arg)
1010 struct bfd_hash_entry *gen_entry;
1013 struct elf32_hppa_stub_hash_entry *stub_entry;
1014 struct elf32_hppa_link_hash_table *htab;
1017 /* Massage our args to the form they really have. */
1018 stub_entry = (struct elf32_hppa_stub_hash_entry *) gen_entry;
1019 htab = (struct elf32_hppa_link_hash_table *) in_arg;
1021 if (stub_entry->stub_type == hppa_stub_long_branch)
1023 else if (stub_entry->stub_type == hppa_stub_long_branch_shared)
1025 else if (stub_entry->stub_type == hppa_stub_export)
1027 else /* hppa_stub_import or hppa_stub_import_shared. */
1029 if (htab->multi_subspace)
1035 stub_entry->stub_sec->_raw_size += size;
1039 /* Return nonzero if ABFD represents an HPPA ELF32 file.
1040 Additionally we set the default architecture and machine. */
1043 elf32_hppa_object_p (abfd)
1046 Elf_Internal_Ehdr * i_ehdrp;
1049 i_ehdrp = elf_elfheader (abfd);
1050 if (strcmp (bfd_get_target (abfd), "elf32-hppa-linux") == 0)
1052 if (i_ehdrp->e_ident[EI_OSABI] != ELFOSABI_LINUX)
1057 if (i_ehdrp->e_ident[EI_OSABI] != ELFOSABI_HPUX)
1061 flags = i_ehdrp->e_flags;
1062 switch (flags & (EF_PARISC_ARCH | EF_PARISC_WIDE))
1064 case EFA_PARISC_1_0:
1065 return bfd_default_set_arch_mach (abfd, bfd_arch_hppa, 10);
1066 case EFA_PARISC_1_1:
1067 return bfd_default_set_arch_mach (abfd, bfd_arch_hppa, 11);
1068 case EFA_PARISC_2_0:
1069 return bfd_default_set_arch_mach (abfd, bfd_arch_hppa, 20);
1070 case EFA_PARISC_2_0 | EF_PARISC_WIDE:
1071 return bfd_default_set_arch_mach (abfd, bfd_arch_hppa, 25);
1076 /* Undo the generic ELF code's subtraction of section->vma from the
1077 value of each external symbol. */
1080 elf32_hppa_add_symbol_hook (abfd, info, sym, namep, flagsp, secp, valp)
1081 bfd *abfd ATTRIBUTE_UNUSED;
1082 struct bfd_link_info *info ATTRIBUTE_UNUSED;
1083 const Elf_Internal_Sym *sym ATTRIBUTE_UNUSED;
1084 const char **namep ATTRIBUTE_UNUSED;
1085 flagword *flagsp ATTRIBUTE_UNUSED;
1089 *valp += (*secp)->vma;
1093 /* Create the .plt and .got sections, and set up our hash table
1094 short-cuts to various dynamic sections. */
1097 elf32_hppa_create_dynamic_sections (abfd, info)
1099 struct bfd_link_info *info;
1101 struct elf32_hppa_link_hash_table *htab;
1103 /* Don't try to create the .plt and .got twice. */
1104 htab = hppa_link_hash_table (info);
1105 if (htab->splt != NULL)
1108 /* Call the generic code to do most of the work. */
1109 if (! _bfd_elf_create_dynamic_sections (abfd, info))
1112 htab->splt = bfd_get_section_by_name (abfd, ".plt");
1113 htab->srelplt = bfd_get_section_by_name (abfd, ".rela.plt");
1115 htab->sgot = bfd_get_section_by_name (abfd, ".got");
1116 htab->srelgot = bfd_make_section (abfd, ".rela.got");
1117 if (htab->srelgot == NULL
1118 || ! bfd_set_section_flags (abfd, htab->srelgot,
1123 | SEC_LINKER_CREATED
1125 || ! bfd_set_section_alignment (abfd, htab->srelgot, 2))
1128 htab->sdynbss = bfd_get_section_by_name (abfd, ".dynbss");
1129 htab->srelbss = bfd_get_section_by_name (abfd, ".rela.bss");
1134 /* Copy the extra info we tack onto an elf_link_hash_entry. */
1137 elf32_hppa_copy_indirect_symbol (dir, ind)
1138 struct elf_link_hash_entry *dir, *ind;
1140 struct elf32_hppa_link_hash_entry *edir, *eind;
1142 edir = (struct elf32_hppa_link_hash_entry *) dir;
1143 eind = (struct elf32_hppa_link_hash_entry *) ind;
1145 if (edir->dyn_relocs == NULL)
1147 edir->dyn_relocs = eind->dyn_relocs;
1148 eind->dyn_relocs = NULL;
1150 else if (eind->dyn_relocs != NULL)
1153 _bfd_elf_link_hash_copy_indirect (dir, ind);
1156 /* Look through the relocs for a section during the first phase, and
1157 calculate needed space in the global offset table, procedure linkage
1158 table, and dynamic reloc sections. At this point we haven't
1159 necessarily read all the input files. */
1162 elf32_hppa_check_relocs (abfd, info, sec, relocs)
1164 struct bfd_link_info *info;
1166 const Elf_Internal_Rela *relocs;
1168 Elf_Internal_Shdr *symtab_hdr;
1169 struct elf_link_hash_entry **sym_hashes;
1170 const Elf_Internal_Rela *rel;
1171 const Elf_Internal_Rela *rel_end;
1172 struct elf32_hppa_link_hash_table *htab;
1174 asection *stubreloc;
1176 if (info->relocateable)
1179 htab = hppa_link_hash_table (info);
1180 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
1181 sym_hashes = elf_sym_hashes (abfd);
1185 rel_end = relocs + sec->reloc_count;
1186 for (rel = relocs; rel < rel_end; rel++)
1195 unsigned int r_symndx, r_type;
1196 struct elf32_hppa_link_hash_entry *h;
1199 r_symndx = ELF32_R_SYM (rel->r_info);
1201 if (r_symndx < symtab_hdr->sh_info)
1204 h = ((struct elf32_hppa_link_hash_entry *)
1205 sym_hashes[r_symndx - symtab_hdr->sh_info]);
1207 r_type = ELF32_R_TYPE (rel->r_info);
1211 case R_PARISC_DLTIND14F:
1212 case R_PARISC_DLTIND14R:
1213 case R_PARISC_DLTIND21L:
1214 /* This symbol requires a global offset table entry. */
1215 need_entry = NEED_GOT;
1217 /* Mark this section as containing PIC code. */
1218 sec->flags |= SEC_HAS_GOT_REF;
1221 case R_PARISC_PLABEL14R: /* "Official" procedure labels. */
1222 case R_PARISC_PLABEL21L:
1223 case R_PARISC_PLABEL32:
1224 /* If the addend is non-zero, we break badly. */
1225 if (rel->r_addend != 0)
1228 /* If we are creating a shared library, then we need to
1229 create a PLT entry for all PLABELs, because PLABELs with
1230 local symbols may be passed via a pointer to another
1231 object. Additionally, output a dynamic relocation
1232 pointing to the PLT entry.
1233 For executables, the original 32-bit ABI allowed two
1234 different styles of PLABELs (function pointers): For
1235 global functions, the PLABEL word points into the .plt
1236 two bytes past a (function address, gp) pair, and for
1237 local functions the PLABEL points directly at the
1238 function. The magic +2 for the first type allows us to
1239 differentiate between the two. As you can imagine, this
1240 is a real pain when it comes to generating code to call
1241 functions indirectly or to compare function pointers.
1242 We avoid the mess by always pointing a PLABEL into the
1243 .plt, even for local functions. */
1244 need_entry = PLT_PLABEL | NEED_PLT | NEED_DYNREL;
1247 case R_PARISC_PCREL12F:
1248 htab->has_12bit_branch = 1;
1250 case R_PARISC_PCREL17C:
1251 case R_PARISC_PCREL17F:
1252 htab->has_17bit_branch = 1;
1254 case R_PARISC_PCREL22F:
1255 /* Function calls might need to go through the .plt, and
1256 might require long branch stubs. */
1259 /* We know local syms won't need a .plt entry, and if
1260 they need a long branch stub we can't guarantee that
1261 we can reach the stub. So just flag an error later
1262 if we're doing a shared link and find we need a long
1268 /* Global symbols will need a .plt entry if they remain
1269 global, and in most cases won't need a long branch
1270 stub. Unfortunately, we have to cater for the case
1271 where a symbol is forced local by versioning, or due
1272 to symbolic linking, and we lose the .plt entry. */
1273 need_entry = NEED_PLT;
1274 if (h->elf.type == STT_PARISC_MILLI)
1279 case R_PARISC_SEGBASE: /* Used to set segment base. */
1280 case R_PARISC_SEGREL32: /* Relative reloc, used for unwind. */
1281 case R_PARISC_PCREL14F: /* PC relative load/store. */
1282 case R_PARISC_PCREL14R:
1283 case R_PARISC_PCREL17R: /* External branches. */
1284 case R_PARISC_PCREL21L: /* As above, and for load/store too. */
1285 /* We don't need to propagate the relocation if linking a
1286 shared object since these are section relative. */
1289 case R_PARISC_DPREL14F: /* Used for gp rel data load/store. */
1290 case R_PARISC_DPREL14R:
1291 case R_PARISC_DPREL21L:
1294 (*_bfd_error_handler)
1295 (_("%s: relocation %s can not be used when making a shared object; recompile with -fPIC"),
1296 bfd_archive_filename (abfd),
1297 elf_hppa_howto_table[r_type].name);
1298 bfd_set_error (bfd_error_bad_value);
1303 case R_PARISC_DIR17F: /* Used for external branches. */
1304 case R_PARISC_DIR17R:
1305 case R_PARISC_DIR14F: /* Used for load/store from absolute locn. */
1306 case R_PARISC_DIR14R:
1307 case R_PARISC_DIR21L: /* As above, and for ext branches too. */
1309 /* Help debug shared library creation. Any of the above
1310 relocs can be used in shared libs, but they may cause
1311 pages to become unshared. */
1314 (*_bfd_error_handler)
1315 (_("%s: relocation %s should not be used when making a shared object; recompile with -fPIC"),
1316 bfd_archive_filename (abfd),
1317 elf_hppa_howto_table[r_type].name);
1322 case R_PARISC_DIR32: /* .word relocs. */
1323 /* We may want to output a dynamic relocation later. */
1324 need_entry = NEED_DYNREL;
1327 /* This relocation describes the C++ object vtable hierarchy.
1328 Reconstruct it for later use during GC. */
1329 case R_PARISC_GNU_VTINHERIT:
1330 if (!_bfd_elf32_gc_record_vtinherit (abfd, sec,
1331 &h->elf, rel->r_offset))
1335 /* This relocation describes which C++ vtable entries are actually
1336 used. Record for later use during GC. */
1337 case R_PARISC_GNU_VTENTRY:
1338 if (!_bfd_elf32_gc_record_vtentry (abfd, sec,
1339 &h->elf, rel->r_addend))
1347 /* Now carry out our orders. */
1348 if (need_entry & NEED_GOT)
1350 /* Allocate space for a GOT entry, as well as a dynamic
1351 relocation for this entry. */
1352 if (htab->sgot == NULL)
1354 if (htab->elf.dynobj == NULL)
1355 htab->elf.dynobj = abfd;
1356 if (!elf32_hppa_create_dynamic_sections (htab->elf.dynobj, info))
1362 if (h->elf.got.refcount == -1)
1363 h->elf.got.refcount = 1;
1365 h->elf.got.refcount += 1;
1369 bfd_signed_vma *local_got_refcounts;
1371 /* This is a global offset table entry for a local symbol. */
1372 local_got_refcounts = elf_local_got_refcounts (abfd);
1373 if (local_got_refcounts == NULL)
1377 /* Allocate space for local got offsets and local
1378 plt offsets. Done this way to save polluting
1379 elf_obj_tdata with another target specific
1381 size = symtab_hdr->sh_info;
1382 size *= 2 * sizeof (bfd_signed_vma);
1383 local_got_refcounts = ((bfd_signed_vma *)
1384 bfd_zalloc (abfd, size));
1385 if (local_got_refcounts == NULL)
1387 elf_local_got_refcounts (abfd) = local_got_refcounts;
1389 local_got_refcounts[r_symndx] += 1;
1393 if (need_entry & NEED_PLT)
1395 /* If we are creating a shared library, and this is a reloc
1396 against a weak symbol or a global symbol in a dynamic
1397 object, then we will be creating an import stub and a
1398 .plt entry for the symbol. Similarly, on a normal link
1399 to symbols defined in a dynamic object we'll need the
1400 import stub and a .plt entry. We don't know yet whether
1401 the symbol is defined or not, so make an entry anyway and
1402 clean up later in adjust_dynamic_symbol. */
1403 if ((sec->flags & SEC_ALLOC) != 0)
1407 if (h->elf.plt.refcount == -1)
1409 h->elf.plt.refcount = 1;
1410 h->elf.elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_PLT;
1413 h->elf.plt.refcount += 1;
1415 /* If this .plt entry is for a plabel, mark it so
1416 that adjust_dynamic_symbol will keep the entry
1417 even if it appears to be local. */
1418 if (need_entry & PLT_PLABEL)
1421 else if (need_entry & PLT_PLABEL)
1423 bfd_signed_vma *local_got_refcounts;
1424 bfd_signed_vma *local_plt_refcounts;
1426 local_got_refcounts = elf_local_got_refcounts (abfd);
1427 if (local_got_refcounts == NULL)
1431 /* Allocate space for local got offsets and local
1433 size = symtab_hdr->sh_info;
1434 size *= 2 * sizeof (bfd_signed_vma);
1435 local_got_refcounts = ((bfd_signed_vma *)
1436 bfd_zalloc (abfd, size));
1437 if (local_got_refcounts == NULL)
1439 elf_local_got_refcounts (abfd) = local_got_refcounts;
1441 local_plt_refcounts = (local_got_refcounts
1442 + symtab_hdr->sh_info);
1443 local_plt_refcounts[r_symndx] += 1;
1448 if (need_entry & NEED_DYNREL)
1450 /* Flag this symbol as having a non-got, non-plt reference
1451 so that we generate copy relocs if it turns out to be
1453 if (h != NULL && !info->shared)
1454 h->elf.elf_link_hash_flags |= ELF_LINK_NON_GOT_REF;
1456 /* If we are creating a shared library then we need to copy
1457 the reloc into the shared library. However, if we are
1458 linking with -Bsymbolic, we need only copy absolute
1459 relocs or relocs against symbols that are not defined in
1460 an object we are including in the link. PC- or DP- or
1461 DLT-relative relocs against any local sym or global sym
1462 with DEF_REGULAR set, can be discarded. At this point we
1463 have not seen all the input files, so it is possible that
1464 DEF_REGULAR is not set now but will be set later (it is
1465 never cleared). We account for that possibility below by
1466 storing information in the dyn_relocs field of the
1469 A similar situation to the -Bsymbolic case occurs when
1470 creating shared libraries and symbol visibility changes
1471 render the symbol local.
1473 As it turns out, all the relocs we will be creating here
1474 are absolute, so we cannot remove them on -Bsymbolic
1475 links or visibility changes anyway. A STUB_REL reloc
1476 is absolute too, as in that case it is the reloc in the
1477 stub we will be creating, rather than copying the PCREL
1478 reloc in the branch.
1480 If on the other hand, we are creating an executable, we
1481 may need to keep relocations for symbols satisfied by a
1482 dynamic library if we manage to avoid copy relocs for the
1485 && (sec->flags & SEC_ALLOC) != 0
1486 && (IS_ABSOLUTE_RELOC (r_type)
1489 || h->elf.root.type == bfd_link_hash_defweak
1490 || (h->elf.elf_link_hash_flags
1491 & ELF_LINK_HASH_DEF_REGULAR) == 0))))
1493 && (sec->flags & SEC_ALLOC) != 0
1495 && (h->elf.root.type == bfd_link_hash_defweak
1496 || (h->elf.elf_link_hash_flags
1497 & ELF_LINK_HASH_DEF_REGULAR) == 0)))
1499 /* Create a reloc section in dynobj and make room for
1506 name = (bfd_elf_string_from_elf_section
1508 elf_elfheader (abfd)->e_shstrndx,
1509 elf_section_data (sec)->rel_hdr.sh_name));
1512 (*_bfd_error_handler)
1513 (_("Could not find relocation section for %s"),
1515 bfd_set_error (bfd_error_bad_value);
1519 if (htab->elf.dynobj == NULL)
1520 htab->elf.dynobj = abfd;
1522 dynobj = htab->elf.dynobj;
1523 sreloc = bfd_get_section_by_name (dynobj, name);
1528 sreloc = bfd_make_section (dynobj, name);
1529 flags = (SEC_HAS_CONTENTS | SEC_READONLY
1530 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
1531 if ((sec->flags & SEC_ALLOC) != 0)
1532 flags |= SEC_ALLOC | SEC_LOAD;
1534 || !bfd_set_section_flags (dynobj, sreloc, flags)
1535 || !bfd_set_section_alignment (dynobj, sreloc, 2))
1539 elf_section_data (sec)->sreloc = sreloc;
1542 /* If this is a global symbol, we count the number of
1543 relocations we need for this symbol. */
1546 struct elf32_hppa_dyn_reloc_entry *p;
1549 if (p == NULL || p->sec != sec)
1551 p = ((struct elf32_hppa_dyn_reloc_entry *)
1552 bfd_alloc (htab->elf.dynobj,
1553 (bfd_size_type) sizeof *p));
1556 p->next = h->dyn_relocs;
1560 #if RELATIVE_DYNRELOCS
1561 p->relative_count = 0;
1566 #if RELATIVE_DYNRELOCS
1567 if (!IS_ABSOLUTE_RELOC (rtype))
1568 p->relative_count += 1;
1573 /* Track dynamic relocs needed for local syms too. */
1574 elf_section_data (sec)->local_dynrel += 1;
1583 /* Return the section that should be marked against garbage collection
1584 for a given relocation. */
1587 elf32_hppa_gc_mark_hook (abfd, info, rel, h, sym)
1589 struct bfd_link_info *info ATTRIBUTE_UNUSED;
1590 Elf_Internal_Rela *rel;
1591 struct elf_link_hash_entry *h;
1592 Elf_Internal_Sym *sym;
1596 switch ((unsigned int) ELF32_R_TYPE (rel->r_info))
1598 case R_PARISC_GNU_VTINHERIT:
1599 case R_PARISC_GNU_VTENTRY:
1603 switch (h->root.type)
1605 case bfd_link_hash_defined:
1606 case bfd_link_hash_defweak:
1607 return h->root.u.def.section;
1609 case bfd_link_hash_common:
1610 return h->root.u.c.p->section;
1619 if (!(elf_bad_symtab (abfd)
1620 && ELF_ST_BIND (sym->st_info) != STB_LOCAL)
1621 && ! ((sym->st_shndx <= 0 || sym->st_shndx >= SHN_LORESERVE)
1622 && sym->st_shndx != SHN_COMMON))
1624 return bfd_section_from_elf_index (abfd, sym->st_shndx);
1631 /* Update the got and plt entry reference counts for the section being
1635 elf32_hppa_gc_sweep_hook (abfd, info, sec, relocs)
1637 struct bfd_link_info *info ATTRIBUTE_UNUSED;
1639 const Elf_Internal_Rela *relocs;
1641 Elf_Internal_Shdr *symtab_hdr;
1642 struct elf_link_hash_entry **sym_hashes;
1643 bfd_signed_vma *local_got_refcounts;
1644 bfd_signed_vma *local_plt_refcounts;
1645 const Elf_Internal_Rela *rel, *relend;
1646 unsigned long r_symndx;
1647 struct elf_link_hash_entry *h;
1648 struct elf32_hppa_link_hash_table *htab;
1651 elf_section_data (sec)->local_dynrel = 0;
1653 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
1654 sym_hashes = elf_sym_hashes (abfd);
1655 local_got_refcounts = elf_local_got_refcounts (abfd);
1656 local_plt_refcounts = local_got_refcounts;
1657 if (local_plt_refcounts != NULL)
1658 local_plt_refcounts += symtab_hdr->sh_info;
1659 htab = hppa_link_hash_table (info);
1660 dynobj = htab->elf.dynobj;
1664 relend = relocs + sec->reloc_count;
1665 for (rel = relocs; rel < relend; rel++)
1666 switch ((unsigned int) ELF32_R_TYPE (rel->r_info))
1668 case R_PARISC_DLTIND14F:
1669 case R_PARISC_DLTIND14R:
1670 case R_PARISC_DLTIND21L:
1671 r_symndx = ELF32_R_SYM (rel->r_info);
1672 if (r_symndx >= symtab_hdr->sh_info)
1674 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
1675 if (h->got.refcount > 0)
1676 h->got.refcount -= 1;
1678 else if (local_got_refcounts != NULL)
1680 if (local_got_refcounts[r_symndx] > 0)
1681 local_got_refcounts[r_symndx] -= 1;
1685 case R_PARISC_PCREL12F:
1686 case R_PARISC_PCREL17C:
1687 case R_PARISC_PCREL17F:
1688 case R_PARISC_PCREL22F:
1689 r_symndx = ELF32_R_SYM (rel->r_info);
1690 if (r_symndx >= symtab_hdr->sh_info)
1692 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
1693 if (h->plt.refcount > 0)
1694 h->plt.refcount -= 1;
1698 case R_PARISC_PLABEL14R:
1699 case R_PARISC_PLABEL21L:
1700 case R_PARISC_PLABEL32:
1701 r_symndx = ELF32_R_SYM (rel->r_info);
1702 if (r_symndx >= symtab_hdr->sh_info)
1704 struct elf32_hppa_link_hash_entry *eh;
1705 struct elf32_hppa_dyn_reloc_entry **pp;
1706 struct elf32_hppa_dyn_reloc_entry *p;
1708 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
1710 if (h->plt.refcount > 0)
1711 h->plt.refcount -= 1;
1713 eh = (struct elf32_hppa_link_hash_entry *) h;
1715 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
1718 #if RELATIVE_DYNRELOCS
1719 if (!IS_ABSOLUTE_RELOC (rtype))
1720 p->relative_count -= 1;
1728 else if (local_plt_refcounts != NULL)
1730 if (local_plt_refcounts[r_symndx] > 0)
1731 local_plt_refcounts[r_symndx] -= 1;
1735 case R_PARISC_DIR32:
1736 r_symndx = ELF32_R_SYM (rel->r_info);
1737 if (r_symndx >= symtab_hdr->sh_info)
1739 struct elf32_hppa_link_hash_entry *eh;
1740 struct elf32_hppa_dyn_reloc_entry **pp;
1741 struct elf32_hppa_dyn_reloc_entry *p;
1743 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
1745 eh = (struct elf32_hppa_link_hash_entry *) h;
1747 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
1750 #if RELATIVE_DYNRELOCS
1751 if (!IS_ABSOLUTE_RELOC (R_PARISC_DIR32))
1752 p->relative_count -= 1;
1769 /* Our own version of hide_symbol, so that we can keep plt entries for
1773 elf32_hppa_hide_symbol (info, h)
1774 struct bfd_link_info *info ATTRIBUTE_UNUSED;
1775 struct elf_link_hash_entry *h;
1777 if ((h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) != 0)
1779 if (! ((struct elf32_hppa_link_hash_entry *) h)->plabel)
1781 h->elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT;
1782 h->plt.offset = (bfd_vma) -1;
1786 /* This is the condition under which elf32_hppa_finish_dynamic_symbol
1787 will be called from elflink.h. If elflink.h doesn't call our
1788 finish_dynamic_symbol routine, we'll need to do something about
1789 initializing any .plt and .got entries in elf32_hppa_relocate_section. */
1790 #define WILL_CALL_FINISH_DYNAMIC_SYMBOL(DYN, INFO, H) \
1792 && ((INFO)->shared \
1793 || ((H)->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0) \
1794 && ((H)->dynindx != -1 \
1795 || ((H)->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) != 0))
1797 /* Adjust a symbol defined by a dynamic object and referenced by a
1798 regular object. The current definition is in some section of the
1799 dynamic object, but we're not including those sections. We have to
1800 change the definition to something the rest of the link can
1804 elf32_hppa_adjust_dynamic_symbol (info, h)
1805 struct bfd_link_info *info;
1806 struct elf_link_hash_entry *h;
1808 struct elf32_hppa_link_hash_table *htab;
1809 struct elf32_hppa_link_hash_entry *eh;
1810 struct elf32_hppa_dyn_reloc_entry *p;
1812 unsigned int power_of_two;
1814 /* If this is a function, put it in the procedure linkage table. We
1815 will fill in the contents of the procedure linkage table later,
1816 when we know the address of the .got section. */
1817 if (h->type == STT_FUNC
1818 || (h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT) != 0)
1821 && h->plt.refcount > 0
1822 && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) != 0
1823 && (h->root.u.def.section->flags & SEC_HAS_GOT_REF) != 0)
1825 ((struct elf32_hppa_link_hash_entry *) h)->maybe_pic_call = 1;
1828 if (h->plt.refcount <= 0
1829 || ((h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) != 0
1830 && h->root.type != bfd_link_hash_defweak
1831 && ! ((struct elf32_hppa_link_hash_entry *) h)->plabel
1832 && (!info->shared || info->symbolic)))
1834 /* The .plt entry is not needed when:
1835 a) Garbage collection has removed all references to the
1837 b) We know for certain the symbol is defined in this
1838 object, and it's not a weak definition, nor is the symbol
1839 used by a plabel relocation. Either this object is the
1840 application or we are doing a shared symbolic link. */
1842 /* As a special sop to the hppa ABI, we keep a .plt entry
1843 for functions in sections containing PIC code. */
1844 if (((struct elf32_hppa_link_hash_entry *) h)->maybe_pic_call)
1845 ((struct elf32_hppa_link_hash_entry *) h)->pic_call = 1;
1848 h->plt.offset = (bfd_vma) -1;
1849 h->elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT;
1856 /* If this is a weak symbol, and there is a real definition, the
1857 processor independent code will have arranged for us to see the
1858 real definition first, and we can just use the same value. */
1859 if (h->weakdef != NULL)
1861 if (h->weakdef->root.type != bfd_link_hash_defined
1862 && h->weakdef->root.type != bfd_link_hash_defweak)
1864 h->root.u.def.section = h->weakdef->root.u.def.section;
1865 h->root.u.def.value = h->weakdef->root.u.def.value;
1868 /* This is a reference to a symbol defined by a dynamic object which
1869 is not a function. */
1871 /* If we are creating a shared library, we must presume that the
1872 only references to the symbol are via the global offset table.
1873 For such cases we need not do anything here; the relocations will
1874 be handled correctly by relocate_section. */
1878 /* If there are no references to this symbol that do not use the
1879 GOT, we don't need to generate a copy reloc. */
1880 if ((h->elf_link_hash_flags & ELF_LINK_NON_GOT_REF) == 0)
1883 eh = (struct elf32_hppa_link_hash_entry *) h;
1884 for (p = eh->dyn_relocs; p != NULL; p = p->next)
1886 s = p->sec->output_section;
1887 if (s != NULL && (s->flags & SEC_READONLY) != 0)
1891 /* If we didn't find any dynamic relocs in read-only sections, then
1892 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
1895 h->elf_link_hash_flags &= ~ELF_LINK_NON_GOT_REF;
1899 /* We must allocate the symbol in our .dynbss section, which will
1900 become part of the .bss section of the executable. There will be
1901 an entry for this symbol in the .dynsym section. The dynamic
1902 object will contain position independent code, so all references
1903 from the dynamic object to this symbol will go through the global
1904 offset table. The dynamic linker will use the .dynsym entry to
1905 determine the address it must put in the global offset table, so
1906 both the dynamic object and the regular object will refer to the
1907 same memory location for the variable. */
1909 htab = hppa_link_hash_table (info);
1911 /* We must generate a COPY reloc to tell the dynamic linker to
1912 copy the initial value out of the dynamic object and into the
1913 runtime process image. */
1914 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0)
1916 htab->srelbss->_raw_size += sizeof (Elf32_External_Rela);
1917 h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_COPY;
1920 /* We need to figure out the alignment required for this symbol. I
1921 have no idea how other ELF linkers handle this. */
1923 power_of_two = bfd_log2 (h->size);
1924 if (power_of_two > 3)
1927 /* Apply the required alignment. */
1929 s->_raw_size = BFD_ALIGN (s->_raw_size,
1930 (bfd_size_type) (1 << power_of_two));
1931 if (power_of_two > bfd_get_section_alignment (htab->elf.dynobj, s))
1933 if (! bfd_set_section_alignment (htab->elf.dynobj, s, power_of_two))
1937 /* Define the symbol as being at this point in the section. */
1938 h->root.u.def.section = s;
1939 h->root.u.def.value = s->_raw_size;
1941 /* Increment the section size to make room for the symbol. */
1942 s->_raw_size += h->size;
1947 /* Called via elf_link_hash_traverse to create .plt entries for an
1948 application that uses statically linked PIC functions. Similar to
1949 the first part of elf32_hppa_adjust_dynamic_symbol. */
1952 hppa_handle_PIC_calls (h, inf)
1953 struct elf_link_hash_entry *h;
1954 PTR inf ATTRIBUTE_UNUSED;
1956 if (! (h->plt.refcount > 0
1957 && (h->root.type == bfd_link_hash_defined
1958 || h->root.type == bfd_link_hash_defweak)
1959 && (h->root.u.def.section->flags & SEC_HAS_GOT_REF) != 0))
1961 h->plt.offset = (bfd_vma) -1;
1962 h->elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT;
1966 h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_PLT;
1967 ((struct elf32_hppa_link_hash_entry *) h)->maybe_pic_call = 1;
1968 ((struct elf32_hppa_link_hash_entry *) h)->pic_call = 1;
1973 /* Allocate space in .plt, .got and associated reloc sections for
1977 allocate_dynrelocs (h, inf)
1978 struct elf_link_hash_entry *h;
1981 struct bfd_link_info *info;
1982 struct elf32_hppa_link_hash_table *htab;
1984 struct elf32_hppa_link_hash_entry *eh;
1985 struct elf32_hppa_dyn_reloc_entry *p;
1987 if (h->root.type == bfd_link_hash_indirect
1988 || h->root.type == bfd_link_hash_warning)
1991 info = (struct bfd_link_info *) inf;
1992 htab = hppa_link_hash_table (info);
1993 if ((htab->elf.dynamic_sections_created
1994 && h->plt.refcount > 0)
1995 || ((struct elf32_hppa_link_hash_entry *) h)->pic_call)
1997 /* Make sure this symbol is output as a dynamic symbol.
1998 Undefined weak syms won't yet be marked as dynamic. */
1999 if (h->dynindx == -1
2000 && (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0
2001 && h->type != STT_PARISC_MILLI
2002 && !((struct elf32_hppa_link_hash_entry *) h)->pic_call)
2004 if (! bfd_elf32_link_record_dynamic_symbol (info, h))
2008 if (((struct elf32_hppa_link_hash_entry *) h)->pic_call
2009 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, info, h))
2011 /* Make an entry in the .plt section. */
2013 h->plt.offset = s->_raw_size;
2014 if (PLABEL_PLT_ENTRY_SIZE != PLT_ENTRY_SIZE
2015 && ((struct elf32_hppa_link_hash_entry *) h)->plabel
2016 && (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0)
2018 /* Add some extra space for the dynamic linker to use. */
2019 s->_raw_size += PLABEL_PLT_ENTRY_SIZE;
2022 s->_raw_size += PLT_ENTRY_SIZE;
2024 if (! ((struct elf32_hppa_link_hash_entry *) h)->pic_call)
2026 /* We also need to make an entry in the .rela.plt section. */
2027 htab->srelplt->_raw_size += sizeof (Elf32_External_Rela);
2028 htab->need_plt_stub = 1;
2033 h->plt.offset = (bfd_vma) -1;
2034 h->elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT;
2039 h->plt.offset = (bfd_vma) -1;
2040 h->elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT;
2043 if (h->got.refcount > 0)
2047 /* Make sure this symbol is output as a dynamic symbol.
2048 Undefined weak syms won't yet be marked as dynamic. */
2049 if (h->dynindx == -1
2050 && (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0
2051 && h->type != STT_PARISC_MILLI)
2053 if (! bfd_elf32_link_record_dynamic_symbol (info, h))
2058 h->got.offset = s->_raw_size;
2059 s->_raw_size += GOT_ENTRY_SIZE;
2060 dyn = htab->elf.dynamic_sections_created;
2061 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info, h))
2062 htab->srelgot->_raw_size += sizeof (Elf32_External_Rela);
2065 h->got.offset = (bfd_vma) -1;
2067 eh = (struct elf32_hppa_link_hash_entry *) h;
2068 if (eh->dyn_relocs == NULL)
2071 /* If this is a -Bsymbolic shared link, then we need to discard all
2072 space allocated for dynamic pc-relative relocs against symbols
2073 defined in a regular object. For the normal shared case, discard
2074 space for relocs that have become local due to symbol visibility
2078 #if RELATIVE_DYNRELOCS
2079 if ((h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) != 0
2080 && ((h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) != 0
2083 struct elf32_hppa_dyn_reloc_entry **pp;
2085 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
2087 p->count -= p->relative_count;
2088 p->relative_count = 0;
2099 /* For the non-shared case, discard space for relocs against
2100 symbols which turn out to need copy relocs or are not
2102 if ((h->elf_link_hash_flags & ELF_LINK_NON_GOT_REF) == 0
2103 && (((h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) != 0
2104 && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0)
2105 || (htab->elf.dynamic_sections_created
2106 && (h->root.type == bfd_link_hash_undefweak
2107 || h->root.type == bfd_link_hash_undefined))))
2109 /* Make sure this symbol is output as a dynamic symbol.
2110 Undefined weak syms won't yet be marked as dynamic. */
2111 if (h->dynindx == -1
2112 && (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0
2113 && h->type != STT_PARISC_MILLI)
2115 if (! bfd_elf32_link_record_dynamic_symbol (info, h))
2119 /* If that succeeded, we know we'll be keeping all the
2121 if (h->dynindx != -1)
2125 eh->dyn_relocs = NULL;
2131 /* Finally, allocate space. */
2132 for (p = eh->dyn_relocs; p != NULL; p = p->next)
2134 asection *sreloc = elf_section_data (p->sec)->sreloc;
2135 sreloc->_raw_size += p->count * sizeof (Elf32_External_Rela);
2141 /* This function is called via elf_link_hash_traverse to force
2142 millicode symbols local so they do not end up as globals in the
2143 dynamic symbol table. We ought to be able to do this in
2144 adjust_dynamic_symbol, but our adjust_dynamic_symbol is not called
2145 for all dynamic symbols. Arguably, this is a bug in
2146 elf_adjust_dynamic_symbol. */
2149 clobber_millicode_symbols (h, info)
2150 struct elf_link_hash_entry *h;
2151 struct bfd_link_info *info;
2153 /* We only want to remove these from the dynamic symbol table.
2154 Therefore we do not leave ELF_LINK_FORCED_LOCAL set. */
2155 if (h->type == STT_PARISC_MILLI)
2157 unsigned short oldflags = h->elf_link_hash_flags;
2158 h->elf_link_hash_flags |= ELF_LINK_FORCED_LOCAL;
2159 elf32_hppa_hide_symbol (info, h);
2160 h->elf_link_hash_flags &= ~ELF_LINK_FORCED_LOCAL;
2161 h->elf_link_hash_flags |= oldflags & ELF_LINK_FORCED_LOCAL;
2166 /* Find any dynamic relocs that apply to read-only sections. */
2169 readonly_dynrelocs (h, inf)
2170 struct elf_link_hash_entry *h;
2173 struct elf32_hppa_link_hash_entry *eh;
2174 struct elf32_hppa_dyn_reloc_entry *p;
2176 eh = (struct elf32_hppa_link_hash_entry *) h;
2177 for (p = eh->dyn_relocs; p != NULL; p = p->next)
2179 asection *s = p->sec->output_section;
2181 if (s != NULL && (s->flags & SEC_READONLY) != 0)
2183 struct bfd_link_info *info = (struct bfd_link_info *) inf;
2185 info->flags |= DF_TEXTREL;
2187 /* Not an error, just cut short the traversal. */
2194 /* Set the sizes of the dynamic sections. */
2197 elf32_hppa_size_dynamic_sections (output_bfd, info)
2198 bfd *output_bfd ATTRIBUTE_UNUSED;
2199 struct bfd_link_info *info;
2201 struct elf32_hppa_link_hash_table *htab;
2207 htab = hppa_link_hash_table (info);
2208 dynobj = htab->elf.dynobj;
2212 if (htab->elf.dynamic_sections_created)
2214 /* Set the contents of the .interp section to the interpreter. */
2217 s = bfd_get_section_by_name (dynobj, ".interp");
2220 s->_raw_size = sizeof ELF_DYNAMIC_INTERPRETER;
2221 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
2224 /* Force millicode symbols local. */
2225 elf_link_hash_traverse (&htab->elf,
2226 clobber_millicode_symbols,
2231 /* Run through the function symbols, looking for any that are
2232 PIC, and allocate space for the necessary .plt entries so
2233 that %r19 will be set up. */
2235 elf_link_hash_traverse (&htab->elf,
2236 hppa_handle_PIC_calls,
2240 /* Set up .got and .plt offsets for local syms, and space for local
2242 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
2244 bfd_signed_vma *local_got;
2245 bfd_signed_vma *end_local_got;
2246 bfd_signed_vma *local_plt;
2247 bfd_signed_vma *end_local_plt;
2248 bfd_size_type locsymcount;
2249 Elf_Internal_Shdr *symtab_hdr;
2252 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour)
2255 for (s = ibfd->sections; s != NULL; s = s->next)
2257 bfd_size_type count = elf_section_data (s)->local_dynrel;
2261 srel = elf_section_data (s)->sreloc;
2262 srel->_raw_size += count * sizeof (Elf32_External_Rela);
2266 local_got = elf_local_got_refcounts (ibfd);
2270 symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
2271 locsymcount = symtab_hdr->sh_info;
2272 end_local_got = local_got + locsymcount;
2274 srel = htab->srelgot;
2275 for (; local_got < end_local_got; ++local_got)
2279 *local_got = s->_raw_size;
2280 s->_raw_size += GOT_ENTRY_SIZE;
2282 srel->_raw_size += sizeof (Elf32_External_Rela);
2285 *local_got = (bfd_vma) -1;
2288 local_plt = end_local_got;
2289 end_local_plt = local_plt + locsymcount;
2290 if (! htab->elf.dynamic_sections_created)
2292 /* Won't be used, but be safe. */
2293 for (; local_plt < end_local_plt; ++local_plt)
2294 *local_plt = (bfd_vma) -1;
2299 srel = htab->srelplt;
2300 for (; local_plt < end_local_plt; ++local_plt)
2304 *local_plt = s->_raw_size;
2305 s->_raw_size += PLT_ENTRY_SIZE;
2307 srel->_raw_size += sizeof (Elf32_External_Rela);
2310 *local_plt = (bfd_vma) -1;
2315 /* Allocate global sym .plt and .got entries, and space for global
2316 sym dynamic relocs. */
2317 elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, (PTR) info);
2319 /* The check_relocs and adjust_dynamic_symbol entry points have
2320 determined the sizes of the various dynamic sections. Allocate
2323 for (s = dynobj->sections; s != NULL; s = s->next)
2325 if ((s->flags & SEC_LINKER_CREATED) == 0)
2328 if (s == htab->splt)
2330 if (htab->need_plt_stub)
2332 /* Make space for the plt stub at the end of the .plt
2333 section. We want this stub right at the end, up
2334 against the .got section. */
2335 int gotalign = bfd_section_alignment (dynobj, htab->sgot);
2336 int pltalign = bfd_section_alignment (dynobj, s);
2339 if (gotalign > pltalign)
2340 bfd_set_section_alignment (dynobj, s, gotalign);
2341 mask = ((bfd_size_type) 1 << gotalign) - 1;
2342 s->_raw_size = (s->_raw_size + sizeof (plt_stub) + mask) & ~mask;
2345 else if (s == htab->sgot)
2347 else if (strncmp (bfd_get_section_name (dynobj, s), ".rela", 5) == 0)
2349 if (s->_raw_size != 0)
2351 /* Remember whether there are any reloc sections other
2353 if (s != htab->srelplt)
2356 /* We use the reloc_count field as a counter if we need
2357 to copy relocs into the output file. */
2363 /* It's not one of our sections, so don't allocate space. */
2367 if (s->_raw_size == 0)
2369 /* If we don't need this section, strip it from the
2370 output file. This is mostly to handle .rela.bss and
2371 .rela.plt. We must create both sections in
2372 create_dynamic_sections, because they must be created
2373 before the linker maps input sections to output
2374 sections. The linker does that before
2375 adjust_dynamic_symbol is called, and it is that
2376 function which decides whether anything needs to go
2377 into these sections. */
2378 _bfd_strip_section_from_output (info, s);
2382 /* Allocate memory for the section contents. Zero it, because
2383 we may not fill in all the reloc sections. */
2384 s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->_raw_size);
2385 if (s->contents == NULL && s->_raw_size != 0)
2389 if (htab->elf.dynamic_sections_created)
2391 /* Like IA-64 and HPPA64, always create a DT_PLTGOT. It
2392 actually has nothing to do with the PLT, it is how we
2393 communicate the LTP value of a load module to the dynamic
2395 #define add_dynamic_entry(TAG, VAL) \
2396 bfd_elf32_add_dynamic_entry (info, (bfd_vma) (TAG), (bfd_vma) (VAL))
2398 if (!add_dynamic_entry (DT_PLTGOT, 0))
2401 /* Add some entries to the .dynamic section. We fill in the
2402 values later, in elf32_hppa_finish_dynamic_sections, but we
2403 must add the entries now so that we get the correct size for
2404 the .dynamic section. The DT_DEBUG entry is filled in by the
2405 dynamic linker and used by the debugger. */
2408 if (!add_dynamic_entry (DT_DEBUG, 0))
2412 if (htab->srelplt->_raw_size != 0)
2414 if (!add_dynamic_entry (DT_PLTRELSZ, 0)
2415 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
2416 || !add_dynamic_entry (DT_JMPREL, 0))
2422 if (!add_dynamic_entry (DT_RELA, 0)
2423 || !add_dynamic_entry (DT_RELASZ, 0)
2424 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf32_External_Rela)))
2427 /* If any dynamic relocs apply to a read-only section,
2428 then we need a DT_TEXTREL entry. */
2429 elf_link_hash_traverse (&htab->elf, readonly_dynrelocs, (PTR) info);
2431 if ((info->flags & DF_TEXTREL) != 0)
2433 if (!add_dynamic_entry (DT_TEXTREL, 0))
2438 #undef add_dynamic_entry
2443 /* External entry points for sizing and building linker stubs. */
2445 /* Determine and set the size of the stub section for a final link.
2447 The basic idea here is to examine all the relocations looking for
2448 PC-relative calls to a target that is unreachable with a "bl"
2452 elf32_hppa_size_stubs (output_bfd, stub_bfd, info, multi_subspace, group_size,
2453 add_stub_section, layout_sections_again)
2456 struct bfd_link_info *info;
2457 boolean multi_subspace;
2458 bfd_signed_vma group_size;
2459 asection * (*add_stub_section) PARAMS ((const char *, asection *));
2460 void (*layout_sections_again) PARAMS ((void));
2464 asection **input_list, **list;
2465 Elf_Internal_Sym *local_syms, **all_local_syms;
2466 unsigned int bfd_indx, bfd_count;
2467 int top_id, top_index;
2468 struct elf32_hppa_link_hash_table *htab;
2469 bfd_size_type stub_group_size;
2470 boolean stubs_always_before_branch;
2471 boolean stub_changed = 0;
2475 htab = hppa_link_hash_table (info);
2477 /* Stash our params away. */
2478 htab->stub_bfd = stub_bfd;
2479 htab->multi_subspace = multi_subspace;
2480 htab->add_stub_section = add_stub_section;
2481 htab->layout_sections_again = layout_sections_again;
2482 stubs_always_before_branch = group_size < 0;
2484 stub_group_size = -group_size;
2486 stub_group_size = group_size;
2487 if (stub_group_size == 1)
2489 /* Default values. */
2490 stub_group_size = 8000000;
2491 if (htab->has_17bit_branch || htab->multi_subspace)
2492 stub_group_size = 250000;
2493 if (htab->has_12bit_branch)
2494 stub_group_size = 7812;
2497 /* Count the number of input BFDs and find the top input section id. */
2498 for (input_bfd = info->input_bfds, bfd_count = 0, top_id = 0;
2500 input_bfd = input_bfd->link_next)
2503 for (section = input_bfd->sections;
2505 section = section->next)
2507 if (top_id < section->id)
2508 top_id = section->id;
2512 amt = sizeof (struct map_stub) * (top_id + 1);
2513 htab->stub_group = (struct map_stub *) bfd_zmalloc (amt);
2514 if (htab->stub_group == NULL)
2517 /* Make a list of input sections for each output section included in
2520 We can't use output_bfd->section_count here to find the top output
2521 section index as some sections may have been removed, and
2522 _bfd_strip_section_from_output doesn't renumber the indices. */
2523 for (section = output_bfd->sections, top_index = 0;
2525 section = section->next)
2527 if (top_index < section->index)
2528 top_index = section->index;
2531 amt = sizeof (asection *) * (top_index + 1);
2532 input_list = (asection **) bfd_malloc (amt);
2533 if (input_list == NULL)
2536 /* For sections we aren't interested in, mark their entries with a
2537 value we can check later. */
2538 list = input_list + top_index;
2540 *list = bfd_abs_section_ptr;
2541 while (list-- != input_list);
2543 for (section = output_bfd->sections;
2545 section = section->next)
2547 if ((section->flags & SEC_CODE) != 0)
2548 input_list[section->index] = NULL;
2551 /* Now actually build the lists. */
2552 for (input_bfd = info->input_bfds;
2554 input_bfd = input_bfd->link_next)
2556 for (section = input_bfd->sections;
2558 section = section->next)
2560 if (section->output_section != NULL
2561 && section->output_section->owner == output_bfd
2562 && section->output_section->index <= top_index)
2564 list = input_list + section->output_section->index;
2565 if (*list != bfd_abs_section_ptr)
2567 /* Steal the link_sec pointer for our list. */
2568 #define PREV_SEC(sec) (htab->stub_group[(sec)->id].link_sec)
2569 /* This happens to make the list in reverse order,
2570 which is what we want. */
2571 PREV_SEC (section) = *list;
2578 /* See whether we can group stub sections together. Grouping stub
2579 sections may result in fewer stubs. More importantly, we need to
2580 put all .init* and .fini* stubs at the beginning of the .init or
2581 .fini output sections respectively, because glibc splits the
2582 _init and _fini functions into multiple parts. Putting a stub in
2583 the middle of a function is not a good idea. */
2584 list = input_list + top_index;
2587 asection *tail = *list;
2588 if (tail == bfd_abs_section_ptr)
2590 while (tail != NULL)
2594 bfd_size_type total;
2597 if (tail->_cooked_size)
2598 total = tail->_cooked_size;
2600 total = tail->_raw_size;
2601 while ((prev = PREV_SEC (curr)) != NULL
2602 && ((total += curr->output_offset - prev->output_offset)
2606 /* OK, the size from the start of CURR to the end is less
2607 than 250000 bytes and thus can be handled by one stub
2608 section. (or the tail section is itself larger than
2609 250000 bytes, in which case we may be toast.)
2610 We should really be keeping track of the total size of
2611 stubs added here, as stubs contribute to the final output
2612 section size. That's a little tricky, and this way will
2613 only break if stubs added total more than 12144 bytes, or
2614 1518 long branch stubs. It seems unlikely for more than
2615 1518 different functions to be called, especially from
2616 code only 250000 bytes long. */
2619 prev = PREV_SEC (tail);
2620 /* Set up this stub group. */
2621 htab->stub_group[tail->id].link_sec = curr;
2623 while (tail != curr && (tail = prev) != NULL);
2625 /* But wait, there's more! Input sections up to 250000
2626 bytes before the stub section can be handled by it too. */
2627 if (!stubs_always_before_branch)
2631 && ((total += tail->output_offset - prev->output_offset)
2635 prev = PREV_SEC (tail);
2636 htab->stub_group[tail->id].link_sec = curr;
2642 while (list-- != input_list);
2646 /* We want to read in symbol extension records only once. To do this
2647 we need to read in the local symbols in parallel and save them for
2648 later use; so hold pointers to the local symbols in an array. */
2649 amt = sizeof (Elf_Internal_Sym *) * bfd_count;
2650 all_local_syms = (Elf_Internal_Sym **) bfd_zmalloc (amt);
2651 if (all_local_syms == NULL)
2654 /* Walk over all the input BFDs, swapping in local symbols.
2655 If we are creating a shared library, create hash entries for the
2657 for (input_bfd = info->input_bfds, bfd_indx = 0;
2659 input_bfd = input_bfd->link_next, bfd_indx++)
2661 Elf_Internal_Shdr *symtab_hdr;
2662 Elf_Internal_Sym *isym;
2663 Elf32_External_Sym *ext_syms, *esym, *end_sy;
2664 bfd_size_type sec_size;
2666 /* We'll need the symbol table in a second. */
2667 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
2668 if (symtab_hdr->sh_info == 0)
2671 /* We need an array of the local symbols attached to the input bfd.
2672 Unfortunately, we're going to have to read & swap them in. */
2673 sec_size = symtab_hdr->sh_info;
2674 sec_size *= sizeof (Elf_Internal_Sym);
2675 local_syms = (Elf_Internal_Sym *) bfd_malloc (sec_size);
2676 if (local_syms == NULL)
2678 goto error_ret_free_local;
2680 all_local_syms[bfd_indx] = local_syms;
2681 sec_size = symtab_hdr->sh_info;
2682 sec_size *= sizeof (Elf32_External_Sym);
2683 ext_syms = (Elf32_External_Sym *) bfd_malloc (sec_size);
2684 if (ext_syms == NULL)
2686 goto error_ret_free_local;
2689 if (bfd_seek (input_bfd, symtab_hdr->sh_offset, SEEK_SET) != 0
2690 || (bfd_bread (ext_syms, sec_size, input_bfd) != sec_size))
2693 goto error_ret_free_local;
2696 /* Swap the local symbols in. */
2699 for (end_sy = esym + symtab_hdr->sh_info; esym < end_sy; esym++, isym++)
2700 bfd_elf32_swap_symbol_in (input_bfd, esym, isym);
2702 /* Now we can free the external symbols. */
2705 if (info->shared && htab->multi_subspace)
2707 struct elf_link_hash_entry **sym_hashes;
2708 struct elf_link_hash_entry **end_hashes;
2709 unsigned int symcount;
2711 symcount = (symtab_hdr->sh_size / sizeof (Elf32_External_Sym)
2712 - symtab_hdr->sh_info);
2713 sym_hashes = elf_sym_hashes (input_bfd);
2714 end_hashes = sym_hashes + symcount;
2716 /* Look through the global syms for functions; We need to
2717 build export stubs for all globally visible functions. */
2718 for (; sym_hashes < end_hashes; sym_hashes++)
2720 struct elf32_hppa_link_hash_entry *hash;
2722 hash = (struct elf32_hppa_link_hash_entry *) *sym_hashes;
2724 while (hash->elf.root.type == bfd_link_hash_indirect
2725 || hash->elf.root.type == bfd_link_hash_warning)
2726 hash = ((struct elf32_hppa_link_hash_entry *)
2727 hash->elf.root.u.i.link);
2729 /* At this point in the link, undefined syms have been
2730 resolved, so we need to check that the symbol was
2731 defined in this BFD. */
2732 if ((hash->elf.root.type == bfd_link_hash_defined
2733 || hash->elf.root.type == bfd_link_hash_defweak)
2734 && hash->elf.type == STT_FUNC
2735 && hash->elf.root.u.def.section->output_section != NULL
2736 && (hash->elf.root.u.def.section->output_section->owner
2738 && hash->elf.root.u.def.section->owner == input_bfd
2739 && (hash->elf.elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR)
2740 && !(hash->elf.elf_link_hash_flags & ELF_LINK_FORCED_LOCAL)
2741 && ELF_ST_VISIBILITY (hash->elf.other) == STV_DEFAULT)
2744 const char *stub_name;
2745 struct elf32_hppa_stub_hash_entry *stub_entry;
2747 sec = hash->elf.root.u.def.section;
2748 stub_name = hash->elf.root.root.string;
2749 stub_entry = hppa_stub_hash_lookup (&htab->stub_hash_table,
2752 if (stub_entry == NULL)
2754 stub_entry = hppa_add_stub (stub_name, sec, htab);
2756 goto error_ret_free_local;
2758 stub_entry->target_value = hash->elf.root.u.def.value;
2759 stub_entry->target_section = hash->elf.root.u.def.section;
2760 stub_entry->stub_type = hppa_stub_export;
2761 stub_entry->h = hash;
2766 (*_bfd_error_handler) (_("%s: duplicate export stub %s"),
2767 bfd_archive_filename (input_bfd),
2779 for (input_bfd = info->input_bfds, bfd_indx = 0;
2781 input_bfd = input_bfd->link_next, bfd_indx++)
2783 Elf_Internal_Shdr *symtab_hdr;
2785 /* We'll need the symbol table in a second. */
2786 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
2787 if (symtab_hdr->sh_info == 0)
2790 local_syms = all_local_syms[bfd_indx];
2792 /* Walk over each section attached to the input bfd. */
2793 for (section = input_bfd->sections;
2795 section = section->next)
2797 Elf_Internal_Shdr *input_rel_hdr;
2798 Elf32_External_Rela *external_relocs, *erelaend, *erela;
2799 Elf_Internal_Rela *internal_relocs, *irelaend, *irela;
2801 /* If there aren't any relocs, then there's nothing more
2803 if ((section->flags & SEC_RELOC) == 0
2804 || section->reloc_count == 0)
2807 /* If this section is a link-once section that will be
2808 discarded, then don't create any stubs. */
2809 if (section->output_section == NULL
2810 || section->output_section->owner != output_bfd)
2813 /* Allocate space for the external relocations. */
2814 amt = section->reloc_count;
2815 amt *= sizeof (Elf32_External_Rela);
2816 external_relocs = (Elf32_External_Rela *) bfd_malloc (amt);
2817 if (external_relocs == NULL)
2819 goto error_ret_free_local;
2822 /* Likewise for the internal relocations. */
2823 amt = section->reloc_count;
2824 amt *= sizeof (Elf_Internal_Rela);
2825 internal_relocs = (Elf_Internal_Rela *) bfd_malloc (amt);
2826 if (internal_relocs == NULL)
2828 free (external_relocs);
2829 goto error_ret_free_local;
2832 /* Read in the external relocs. */
2833 input_rel_hdr = &elf_section_data (section)->rel_hdr;
2834 if (bfd_seek (input_bfd, input_rel_hdr->sh_offset, SEEK_SET) != 0
2835 || bfd_bread (external_relocs,
2836 input_rel_hdr->sh_size,
2837 input_bfd) != input_rel_hdr->sh_size)
2839 free (external_relocs);
2840 error_ret_free_internal:
2841 free (internal_relocs);
2842 goto error_ret_free_local;
2845 /* Swap in the relocs. */
2846 erela = external_relocs;
2847 erelaend = erela + section->reloc_count;
2848 irela = internal_relocs;
2849 for (; erela < erelaend; erela++, irela++)
2850 bfd_elf32_swap_reloca_in (input_bfd, erela, irela);
2852 /* We're done with the external relocs, free them. */
2853 free (external_relocs);
2855 /* Now examine each relocation. */
2856 irela = internal_relocs;
2857 irelaend = irela + section->reloc_count;
2858 for (; irela < irelaend; irela++)
2860 unsigned int r_type, r_indx;
2861 enum elf32_hppa_stub_type stub_type;
2862 struct elf32_hppa_stub_hash_entry *stub_entry;
2865 bfd_vma destination;
2866 struct elf32_hppa_link_hash_entry *hash;
2868 const asection *id_sec;
2870 r_type = ELF32_R_TYPE (irela->r_info);
2871 r_indx = ELF32_R_SYM (irela->r_info);
2873 if (r_type >= (unsigned int) R_PARISC_UNIMPLEMENTED)
2875 bfd_set_error (bfd_error_bad_value);
2876 goto error_ret_free_internal;
2879 /* Only look for stubs on call instructions. */
2880 if (r_type != (unsigned int) R_PARISC_PCREL12F
2881 && r_type != (unsigned int) R_PARISC_PCREL17F
2882 && r_type != (unsigned int) R_PARISC_PCREL22F)
2885 /* Now determine the call target, its name, value,
2891 if (r_indx < symtab_hdr->sh_info)
2893 /* It's a local symbol. */
2894 Elf_Internal_Sym *sym;
2895 Elf_Internal_Shdr *hdr;
2897 sym = local_syms + r_indx;
2898 hdr = elf_elfsections (input_bfd)[sym->st_shndx];
2899 sym_sec = hdr->bfd_section;
2900 if (ELF_ST_TYPE (sym->st_info) != STT_SECTION)
2901 sym_value = sym->st_value;
2902 destination = (sym_value + irela->r_addend
2903 + sym_sec->output_offset
2904 + sym_sec->output_section->vma);
2908 /* It's an external symbol. */
2911 e_indx = r_indx - symtab_hdr->sh_info;
2912 hash = ((struct elf32_hppa_link_hash_entry *)
2913 elf_sym_hashes (input_bfd)[e_indx]);
2915 while (hash->elf.root.type == bfd_link_hash_indirect
2916 || hash->elf.root.type == bfd_link_hash_warning)
2917 hash = ((struct elf32_hppa_link_hash_entry *)
2918 hash->elf.root.u.i.link);
2920 if (hash->elf.root.type == bfd_link_hash_defined
2921 || hash->elf.root.type == bfd_link_hash_defweak)
2923 sym_sec = hash->elf.root.u.def.section;
2924 sym_value = hash->elf.root.u.def.value;
2925 if (sym_sec->output_section != NULL)
2926 destination = (sym_value + irela->r_addend
2927 + sym_sec->output_offset
2928 + sym_sec->output_section->vma);
2930 else if (hash->elf.root.type == bfd_link_hash_undefweak)
2935 else if (hash->elf.root.type == bfd_link_hash_undefined)
2938 && !info->no_undefined
2939 && (ELF_ST_VISIBILITY (hash->elf.other)
2945 bfd_set_error (bfd_error_bad_value);
2946 goto error_ret_free_internal;
2950 /* Determine what (if any) linker stub is needed. */
2951 stub_type = hppa_type_of_stub (section, irela, hash,
2953 if (stub_type == hppa_stub_none)
2956 /* Support for grouping stub sections. */
2957 id_sec = htab->stub_group[section->id].link_sec;
2959 /* Get the name of this stub. */
2960 stub_name = hppa_stub_name (id_sec, sym_sec, hash, irela);
2962 goto error_ret_free_internal;
2964 stub_entry = hppa_stub_hash_lookup (&htab->stub_hash_table,
2967 if (stub_entry != NULL)
2969 /* The proper stub has already been created. */
2974 stub_entry = hppa_add_stub (stub_name, section, htab);
2975 if (stub_entry == NULL)
2978 goto error_ret_free_local;
2981 stub_entry->target_value = sym_value;
2982 stub_entry->target_section = sym_sec;
2983 stub_entry->stub_type = stub_type;
2986 if (stub_type == hppa_stub_import)
2987 stub_entry->stub_type = hppa_stub_import_shared;
2988 else if (stub_type == hppa_stub_long_branch)
2989 stub_entry->stub_type = hppa_stub_long_branch_shared;
2991 stub_entry->h = hash;
2995 /* We're done with the internal relocs, free them. */
2996 free (internal_relocs);
3003 /* OK, we've added some stubs. Find out the new size of the
3005 for (stub_sec = htab->stub_bfd->sections;
3007 stub_sec = stub_sec->next)
3009 stub_sec->_raw_size = 0;
3010 stub_sec->_cooked_size = 0;
3013 bfd_hash_traverse (&htab->stub_hash_table, hppa_size_one_stub, htab);
3015 /* Ask the linker to do its stuff. */
3016 (*htab->layout_sections_again) ();
3022 error_ret_free_local:
3023 while (bfd_count-- > 0)
3024 if (all_local_syms[bfd_count])
3025 free (all_local_syms[bfd_count]);
3026 free (all_local_syms);
3031 /* For a final link, this function is called after we have sized the
3032 stubs to provide a value for __gp. */
3035 elf32_hppa_set_gp (abfd, info)
3037 struct bfd_link_info *info;
3039 struct elf32_hppa_link_hash_table *htab;
3040 struct elf_link_hash_entry *h;
3044 htab = hppa_link_hash_table (info);
3045 h = elf_link_hash_lookup (&htab->elf, "$global$", false, false, false);
3048 && (h->root.type == bfd_link_hash_defined
3049 || h->root.type == bfd_link_hash_defweak))
3051 gp_val = h->root.u.def.value;
3052 sec = h->root.u.def.section;
3056 /* Choose to point our LTP at, in this order, one of .plt, .got,
3057 or .data, if these sections exist. In the case of choosing
3058 .plt try to make the LTP ideal for addressing anywhere in the
3059 .plt or .got with a 14 bit signed offset. Typically, the end
3060 of the .plt is the start of the .got, so choose .plt + 0x2000
3061 if either the .plt or .got is larger than 0x2000. If both
3062 the .plt and .got are smaller than 0x2000, choose the end of
3063 the .plt section. */
3068 gp_val = sec->_raw_size;
3070 || (htab->sgot && htab->sgot->_raw_size > 0x2000))
3081 /* We know we don't have a .plt. If .got is large,
3083 if (sec->_raw_size > 0x2000)
3088 /* No .plt or .got. Who cares what the LTP is? */
3089 sec = bfd_get_section_by_name (abfd, ".data");
3095 h->root.type = bfd_link_hash_defined;
3096 h->root.u.def.value = gp_val;
3098 h->root.u.def.section = sec;
3100 h->root.u.def.section = bfd_abs_section_ptr;
3104 if (sec != NULL && sec->output_section != NULL)
3105 gp_val += sec->output_section->vma + sec->output_offset;
3107 elf_gp (abfd) = gp_val;
3111 /* Build all the stubs associated with the current output file. The
3112 stubs are kept in a hash table attached to the main linker hash
3113 table. We also set up the .plt entries for statically linked PIC
3114 functions here. This function is called via hppaelf_finish in the
3118 elf32_hppa_build_stubs (info)
3119 struct bfd_link_info *info;
3122 struct bfd_hash_table *table;
3123 struct elf32_hppa_link_hash_table *htab;
3125 htab = hppa_link_hash_table (info);
3127 for (stub_sec = htab->stub_bfd->sections;
3129 stub_sec = stub_sec->next)
3133 /* Allocate memory to hold the linker stubs. */
3134 size = stub_sec->_raw_size;
3135 stub_sec->contents = (unsigned char *) bfd_zalloc (htab->stub_bfd, size);
3136 if (stub_sec->contents == NULL && size != 0)
3138 stub_sec->_raw_size = 0;
3141 /* Build the stubs as directed by the stub hash table. */
3142 table = &htab->stub_hash_table;
3143 bfd_hash_traverse (table, hppa_build_one_stub, info);
3148 /* Perform a final link. */
3151 elf32_hppa_final_link (abfd, info)
3153 struct bfd_link_info *info;
3157 /* Invoke the regular ELF linker to do all the work. */
3158 if (!bfd_elf32_bfd_final_link (abfd, info))
3161 /* If we're producing a final executable, sort the contents of the
3162 unwind section. Magic section names, but this is much safer than
3163 having elf32_hppa_relocate_section remember where SEGREL32 relocs
3164 occurred. Consider what happens if someone inept creates a
3165 linker script that puts unwind information in .text. */
3166 s = bfd_get_section_by_name (abfd, ".PARISC.unwind");
3172 size = s->_raw_size;
3173 contents = bfd_malloc (size);
3174 if (contents == NULL)
3177 if (! bfd_get_section_contents (abfd, s, contents, (file_ptr) 0, size))
3180 qsort (contents, (size_t) (size / 16), 16, hppa_unwind_entry_compare);
3182 if (! bfd_set_section_contents (abfd, s, contents, (file_ptr) 0, size))
3188 /* Record the lowest address for the data and text segments. */
3191 hppa_record_segment_addr (abfd, section, data)
3192 bfd *abfd ATTRIBUTE_UNUSED;
3196 struct elf32_hppa_link_hash_table *htab;
3198 htab = (struct elf32_hppa_link_hash_table *) data;
3200 if ((section->flags & (SEC_ALLOC | SEC_LOAD)) == (SEC_ALLOC | SEC_LOAD))
3202 bfd_vma value = section->vma - section->filepos;
3204 if ((section->flags & SEC_READONLY) != 0)
3206 if (value < htab->text_segment_base)
3207 htab->text_segment_base = value;
3211 if (value < htab->data_segment_base)
3212 htab->data_segment_base = value;
3217 /* Perform a relocation as part of a final link. */
3219 static bfd_reloc_status_type
3220 final_link_relocate (input_section, contents, rel, value, htab, sym_sec, h)
3221 asection *input_section;
3223 const Elf_Internal_Rela *rel;
3225 struct elf32_hppa_link_hash_table *htab;
3227 struct elf32_hppa_link_hash_entry *h;
3230 unsigned int r_type = ELF32_R_TYPE (rel->r_info);
3231 reloc_howto_type *howto = elf_hppa_howto_table + r_type;
3232 int r_format = howto->bitsize;
3233 enum hppa_reloc_field_selector_type_alt r_field;
3234 bfd *input_bfd = input_section->owner;
3235 bfd_vma offset = rel->r_offset;
3236 bfd_vma max_branch_offset = 0;
3237 bfd_byte *hit_data = contents + offset;
3238 bfd_signed_vma addend = rel->r_addend;
3240 struct elf32_hppa_stub_hash_entry *stub_entry = NULL;
3243 if (r_type == R_PARISC_NONE)
3244 return bfd_reloc_ok;
3246 insn = bfd_get_32 (input_bfd, hit_data);
3248 /* Find out where we are and where we're going. */
3249 location = (offset +
3250 input_section->output_offset +
3251 input_section->output_section->vma);
3255 case R_PARISC_PCREL12F:
3256 case R_PARISC_PCREL17F:
3257 case R_PARISC_PCREL22F:
3258 /* If this is a call to a function defined in another dynamic
3259 library, or if it is a call to a PIC function in the same
3260 object, or if this is a shared link and it is a call to a
3261 weak symbol which may or may not be in the same object, then
3262 find the import stub in the stub hash. */
3264 || sym_sec->output_section == NULL
3266 && ((h->maybe_pic_call
3267 && !(input_section->flags & SEC_HAS_GOT_REF))
3268 || (h->elf.root.type == bfd_link_hash_defweak
3269 && h->elf.dynindx != -1
3270 && h->elf.plt.offset != (bfd_vma) -1))))
3272 stub_entry = hppa_get_stub_entry (input_section, sym_sec,
3274 if (stub_entry != NULL)
3276 value = (stub_entry->stub_offset
3277 + stub_entry->stub_sec->output_offset
3278 + stub_entry->stub_sec->output_section->vma);
3281 else if (sym_sec == NULL && h != NULL
3282 && h->elf.root.type == bfd_link_hash_undefweak)
3284 /* It's OK if undefined weak. Calls to undefined weak
3285 symbols behave as if the "called" function
3286 immediately returns. We can thus call to a weak
3287 function without first checking whether the function
3293 return bfd_reloc_notsupported;
3297 case R_PARISC_PCREL21L:
3298 case R_PARISC_PCREL17C:
3299 case R_PARISC_PCREL17R:
3300 case R_PARISC_PCREL14R:
3301 case R_PARISC_PCREL14F:
3302 /* Make it a pc relative offset. */
3307 case R_PARISC_DPREL21L:
3308 case R_PARISC_DPREL14R:
3309 case R_PARISC_DPREL14F:
3310 /* For all the DP relative relocations, we need to examine the symbol's
3311 section. If it's a code section, then "data pointer relative" makes
3312 no sense. In that case we don't adjust the "value", and for 21 bit
3313 addil instructions, we change the source addend register from %dp to
3314 %r0. This situation commonly arises when a variable's "constness"
3315 is declared differently from the way the variable is defined. For
3316 instance: "extern int foo" with foo defined as "const int foo". */
3317 if (sym_sec == NULL)
3319 if ((sym_sec->flags & SEC_CODE) != 0)
3321 if ((insn & ((0x3f << 26) | (0x1f << 21)))
3322 == (((int) OP_ADDIL << 26) | (27 << 21)))
3324 insn &= ~ (0x1f << 21);
3325 #if 1 /* debug them. */
3326 (*_bfd_error_handler)
3327 (_("%s(%s+0x%lx): fixing %s"),
3328 bfd_archive_filename (input_bfd),
3329 input_section->name,
3330 (long) rel->r_offset,
3334 /* Now try to make things easy for the dynamic linker. */
3340 case R_PARISC_DLTIND21L:
3341 case R_PARISC_DLTIND14R:
3342 case R_PARISC_DLTIND14F:
3343 value -= elf_gp (input_section->output_section->owner);
3346 case R_PARISC_SEGREL32:
3347 if ((sym_sec->flags & SEC_CODE) != 0)
3348 value -= htab->text_segment_base;
3350 value -= htab->data_segment_base;
3359 case R_PARISC_DIR32:
3360 case R_PARISC_DIR14F:
3361 case R_PARISC_DIR17F:
3362 case R_PARISC_PCREL17C:
3363 case R_PARISC_PCREL14F:
3364 case R_PARISC_DPREL14F:
3365 case R_PARISC_PLABEL32:
3366 case R_PARISC_DLTIND14F:
3367 case R_PARISC_SEGBASE:
3368 case R_PARISC_SEGREL32:
3372 case R_PARISC_DIR21L:
3373 case R_PARISC_PCREL21L:
3374 case R_PARISC_DPREL21L:
3375 case R_PARISC_PLABEL21L:
3376 case R_PARISC_DLTIND21L:
3380 case R_PARISC_DIR17R:
3381 case R_PARISC_PCREL17R:
3382 case R_PARISC_DIR14R:
3383 case R_PARISC_PCREL14R:
3384 case R_PARISC_DPREL14R:
3385 case R_PARISC_PLABEL14R:
3386 case R_PARISC_DLTIND14R:
3390 case R_PARISC_PCREL12F:
3391 case R_PARISC_PCREL17F:
3392 case R_PARISC_PCREL22F:
3395 if (r_type == (unsigned int) R_PARISC_PCREL17F)
3397 max_branch_offset = (1 << (17-1)) << 2;
3399 else if (r_type == (unsigned int) R_PARISC_PCREL12F)
3401 max_branch_offset = (1 << (12-1)) << 2;
3405 max_branch_offset = (1 << (22-1)) << 2;
3408 /* sym_sec is NULL on undefined weak syms or when shared on
3409 undefined syms. We've already checked for a stub for the
3410 shared undefined case. */
3411 if (sym_sec == NULL)
3414 /* If the branch is out of reach, then redirect the
3415 call to the local stub for this function. */
3416 if (value + addend + max_branch_offset >= 2*max_branch_offset)
3418 stub_entry = hppa_get_stub_entry (input_section, sym_sec,
3420 if (stub_entry == NULL)
3421 return bfd_reloc_notsupported;
3423 /* Munge up the value and addend so that we call the stub
3424 rather than the procedure directly. */
3425 value = (stub_entry->stub_offset
3426 + stub_entry->stub_sec->output_offset
3427 + stub_entry->stub_sec->output_section->vma
3433 /* Something we don't know how to handle. */
3435 return bfd_reloc_notsupported;
3438 /* Make sure we can reach the stub. */
3439 if (max_branch_offset != 0
3440 && value + addend + max_branch_offset >= 2*max_branch_offset)
3442 (*_bfd_error_handler)
3443 (_("%s(%s+0x%lx): cannot reach %s, recompile with -ffunction-sections"),
3444 bfd_archive_filename (input_bfd),
3445 input_section->name,
3446 (long) rel->r_offset,
3447 stub_entry->root.string);
3448 return bfd_reloc_notsupported;
3451 val = hppa_field_adjust (value, addend, r_field);
3455 case R_PARISC_PCREL12F:
3456 case R_PARISC_PCREL17C:
3457 case R_PARISC_PCREL17F:
3458 case R_PARISC_PCREL17R:
3459 case R_PARISC_PCREL22F:
3460 case R_PARISC_DIR17F:
3461 case R_PARISC_DIR17R:
3462 /* This is a branch. Divide the offset by four.
3463 Note that we need to decide whether it's a branch or
3464 otherwise by inspecting the reloc. Inspecting insn won't
3465 work as insn might be from a .word directive. */
3473 insn = hppa_rebuild_insn (insn, val, r_format);
3475 /* Update the instruction word. */
3476 bfd_put_32 (input_bfd, (bfd_vma) insn, hit_data);
3477 return bfd_reloc_ok;
3480 /* Relocate an HPPA ELF section. */
3483 elf32_hppa_relocate_section (output_bfd, info, input_bfd, input_section,
3484 contents, relocs, local_syms, local_sections)
3486 struct bfd_link_info *info;
3488 asection *input_section;
3490 Elf_Internal_Rela *relocs;
3491 Elf_Internal_Sym *local_syms;
3492 asection **local_sections;
3495 bfd_vma *local_got_offsets;
3496 struct elf32_hppa_link_hash_table *htab;
3497 Elf_Internal_Shdr *symtab_hdr;
3498 Elf_Internal_Rela *rel;
3499 Elf_Internal_Rela *relend;
3501 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
3503 htab = hppa_link_hash_table (info);
3504 dynobj = htab->elf.dynobj;
3505 local_got_offsets = elf_local_got_offsets (input_bfd);
3508 relend = relocs + input_section->reloc_count;
3509 for (; rel < relend; rel++)
3511 unsigned int r_type;
3512 reloc_howto_type *howto;
3513 unsigned int r_symndx;
3514 struct elf32_hppa_link_hash_entry *h;
3515 Elf_Internal_Sym *sym;
3518 bfd_reloc_status_type r;
3519 const char *sym_name;
3523 r_type = ELF32_R_TYPE (rel->r_info);
3524 if (r_type >= (unsigned int) R_PARISC_UNIMPLEMENTED)
3526 bfd_set_error (bfd_error_bad_value);
3529 if (r_type == (unsigned int) R_PARISC_GNU_VTENTRY
3530 || r_type == (unsigned int) R_PARISC_GNU_VTINHERIT)
3533 r_symndx = ELF32_R_SYM (rel->r_info);
3535 if (info->relocateable)
3537 /* This is a relocatable link. We don't have to change
3538 anything, unless the reloc is against a section symbol,
3539 in which case we have to adjust according to where the
3540 section symbol winds up in the output section. */
3541 if (r_symndx < symtab_hdr->sh_info)
3543 sym = local_syms + r_symndx;
3544 if (ELF_ST_TYPE (sym->st_info) == STT_SECTION)
3546 sym_sec = local_sections[r_symndx];
3547 rel->r_addend += sym_sec->output_offset;
3553 /* This is a final link. */
3557 if (r_symndx < symtab_hdr->sh_info)
3559 /* This is a local symbol, h defaults to NULL. */
3560 sym = local_syms + r_symndx;
3561 sym_sec = local_sections[r_symndx];
3562 relocation = ((ELF_ST_TYPE (sym->st_info) == STT_SECTION
3563 ? 0 : sym->st_value)
3564 + sym_sec->output_offset
3565 + sym_sec->output_section->vma);
3571 /* It's a global; Find its entry in the link hash. */
3572 indx = r_symndx - symtab_hdr->sh_info;
3573 h = ((struct elf32_hppa_link_hash_entry *)
3574 elf_sym_hashes (input_bfd)[indx]);
3575 while (h->elf.root.type == bfd_link_hash_indirect
3576 || h->elf.root.type == bfd_link_hash_warning)
3577 h = (struct elf32_hppa_link_hash_entry *) h->elf.root.u.i.link;
3580 if (h->elf.root.type == bfd_link_hash_defined
3581 || h->elf.root.type == bfd_link_hash_defweak)
3583 sym_sec = h->elf.root.u.def.section;
3584 /* If sym_sec->output_section is NULL, then it's a
3585 symbol defined in a shared library. */
3586 if (sym_sec->output_section != NULL)
3587 relocation = (h->elf.root.u.def.value
3588 + sym_sec->output_offset
3589 + sym_sec->output_section->vma);
3591 else if (h->elf.root.type == bfd_link_hash_undefweak)
3593 else if (info->shared && !info->no_undefined
3594 && ELF_ST_VISIBILITY (h->elf.other) == STV_DEFAULT
3595 && h->elf.type != STT_PARISC_MILLI)
3597 if (info->symbolic && !info->allow_shlib_undefined)
3598 if (!((*info->callbacks->undefined_symbol)
3599 (info, h->elf.root.root.string, input_bfd,
3600 input_section, rel->r_offset, false)))
3605 if (!((*info->callbacks->undefined_symbol)
3606 (info, h->elf.root.root.string, input_bfd,
3607 input_section, rel->r_offset, true)))
3612 /* Do any required modifications to the relocation value, and
3613 determine what types of dynamic info we need to output, if
3618 case R_PARISC_DLTIND14F:
3619 case R_PARISC_DLTIND14R:
3620 case R_PARISC_DLTIND21L:
3621 /* Relocation is to the entry for this symbol in the global
3627 off = h->elf.got.offset;
3628 dyn = htab->elf.dynamic_sections_created;
3629 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info, &h->elf))
3631 /* This is actually a static link, or it is a
3632 -Bsymbolic link and the symbol is defined
3633 locally, or the symbol was forced to be local
3634 because of a version file. We must initialize
3635 this entry in the global offset table. Since the
3636 offset must always be a multiple of 4, we use the
3637 least significant bit to record whether we have
3638 initialized it already.
3640 When doing a dynamic link, we create a .rela.got
3641 relocation entry to initialize the value. This
3642 is done in the finish_dynamic_symbol routine. */
3647 bfd_put_32 (output_bfd, relocation,
3648 htab->sgot->contents + off);
3649 h->elf.got.offset |= 1;
3655 /* Local symbol case. */
3656 if (local_got_offsets == NULL)
3659 off = local_got_offsets[r_symndx];
3661 /* The offset must always be a multiple of 4. We use
3662 the least significant bit to record whether we have
3663 already generated the necessary reloc. */
3668 bfd_put_32 (output_bfd, relocation,
3669 htab->sgot->contents + off);
3673 /* Output a dynamic relocation for this GOT
3674 entry. In this case it is relative to the
3675 base of the object because the symbol index
3677 Elf_Internal_Rela outrel;
3678 asection *srelgot = htab->srelgot;
3679 Elf32_External_Rela *loc;
3681 outrel.r_offset = (off
3682 + htab->sgot->output_offset
3683 + htab->sgot->output_section->vma);
3684 outrel.r_info = ELF32_R_INFO (0, R_PARISC_DIR32);
3685 outrel.r_addend = relocation;
3686 loc = (Elf32_External_Rela *) srelgot->contents;
3687 loc += srelgot->reloc_count++;
3688 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
3691 local_got_offsets[r_symndx] |= 1;
3695 if (off >= (bfd_vma) -2)
3698 /* Add the base of the GOT to the relocation value. */
3700 + htab->sgot->output_offset
3701 + htab->sgot->output_section->vma);
3704 case R_PARISC_SEGREL32:
3705 /* If this is the first SEGREL relocation, then initialize
3706 the segment base values. */
3707 if (htab->text_segment_base == (bfd_vma) -1)
3708 bfd_map_over_sections (output_bfd, hppa_record_segment_addr, htab);
3711 case R_PARISC_PLABEL14R:
3712 case R_PARISC_PLABEL21L:
3713 case R_PARISC_PLABEL32:
3714 if (htab->elf.dynamic_sections_created)
3716 /* If we have a global symbol with a PLT slot, then
3717 redirect this relocation to it. */
3720 off = h->elf.plt.offset;
3721 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, info, &h->elf))
3723 /* In a non-shared link, adjust_dynamic_symbols
3724 isn't called for symbols forced local. We
3725 need to write out the plt entry here. */
3730 bfd_put_32 (output_bfd,
3732 htab->splt->contents + off);
3733 bfd_put_32 (output_bfd,
3734 elf_gp (htab->splt->output_section->owner),
3735 htab->splt->contents + off + 4);
3736 h->elf.plt.offset |= 1;
3742 bfd_vma *local_plt_offsets;
3744 if (local_got_offsets == NULL)
3747 local_plt_offsets = local_got_offsets + symtab_hdr->sh_info;
3748 off = local_plt_offsets[r_symndx];
3750 /* As for the local .got entry case, we use the last
3751 bit to record whether we've already initialised
3752 this local .plt entry. */
3757 bfd_put_32 (output_bfd,
3759 htab->splt->contents + off);
3760 bfd_put_32 (output_bfd,
3761 elf_gp (htab->splt->output_section->owner),
3762 htab->splt->contents + off + 4);
3766 /* Output a dynamic IPLT relocation for this
3768 Elf_Internal_Rela outrel;
3769 asection *srelplt = htab->srelplt;
3770 Elf32_External_Rela *loc;
3772 outrel.r_offset = (off
3773 + htab->splt->output_offset
3774 + htab->splt->output_section->vma);
3775 outrel.r_info = ELF32_R_INFO (0, R_PARISC_IPLT);
3776 outrel.r_addend = relocation;
3777 loc = (Elf32_External_Rela *) srelplt->contents;
3778 loc += srelplt->reloc_count++;
3779 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
3782 local_plt_offsets[r_symndx] |= 1;
3786 if (off >= (bfd_vma) -2)
3789 /* PLABELs contain function pointers. Relocation is to
3790 the entry for the function in the .plt. The magic +2
3791 offset signals to $$dyncall that the function pointer
3792 is in the .plt and thus has a gp pointer too.
3793 Exception: Undefined PLABELs should have a value of
3796 || (h->elf.root.type != bfd_link_hash_undefweak
3797 && h->elf.root.type != bfd_link_hash_undefined))
3800 + htab->splt->output_offset
3801 + htab->splt->output_section->vma
3806 /* Fall through and possibly emit a dynamic relocation. */
3808 case R_PARISC_DIR17F:
3809 case R_PARISC_DIR17R:
3810 case R_PARISC_DIR14F:
3811 case R_PARISC_DIR14R:
3812 case R_PARISC_DIR21L:
3813 case R_PARISC_DPREL14F:
3814 case R_PARISC_DPREL14R:
3815 case R_PARISC_DPREL21L:
3816 case R_PARISC_DIR32:
3817 /* The reloc types handled here and this conditional
3818 expression must match the code in ..check_relocs and
3819 ..discard_relocs. ie. We need exactly the same condition
3820 as in ..check_relocs, with some extra conditions (dynindx
3821 test in this case) to cater for relocs removed by
3822 ..discard_relocs. If you squint, the non-shared test
3823 here does indeed match the one in ..check_relocs, the
3824 difference being that here we test DEF_DYNAMIC as well as
3825 !DEF_REGULAR. All common syms end up with !DEF_REGULAR,
3826 which is why we can't use just that test here.
3827 Conversely, DEF_DYNAMIC can't be used in check_relocs as
3828 there all files have not been loaded. */
3830 && (input_section->flags & SEC_ALLOC) != 0
3831 && (IS_ABSOLUTE_RELOC (r_type)
3833 && h->elf.dynindx != -1
3835 || (h->elf.elf_link_hash_flags
3836 & ELF_LINK_HASH_DEF_REGULAR) == 0))))
3838 && (input_section->flags & SEC_ALLOC) != 0
3840 && h->elf.dynindx != -1
3841 && (h->elf.elf_link_hash_flags & ELF_LINK_NON_GOT_REF) == 0
3842 && (((h->elf.elf_link_hash_flags
3843 & ELF_LINK_HASH_DEF_DYNAMIC) != 0
3844 && (h->elf.elf_link_hash_flags
3845 & ELF_LINK_HASH_DEF_REGULAR) == 0)
3846 || h->elf.root.type == bfd_link_hash_undefweak
3847 || h->elf.root.type == bfd_link_hash_undefined)))
3849 Elf_Internal_Rela outrel;
3852 Elf32_External_Rela *loc;
3854 /* When generating a shared object, these relocations
3855 are copied into the output file to be resolved at run
3858 outrel.r_offset = rel->r_offset;
3859 outrel.r_addend = rel->r_addend;
3861 if (elf_section_data (input_section)->stab_info != NULL)
3863 off = (_bfd_stab_section_offset
3864 (output_bfd, &htab->elf.stab_info,
3866 &elf_section_data (input_section)->stab_info,
3868 if (off == (bfd_vma) -1)
3870 outrel.r_offset = off;
3873 outrel.r_offset += (input_section->output_offset
3874 + input_section->output_section->vma);
3878 memset (&outrel, 0, sizeof (outrel));
3881 && h->elf.dynindx != -1
3883 || !IS_ABSOLUTE_RELOC (r_type)
3886 || (h->elf.elf_link_hash_flags
3887 & ELF_LINK_HASH_DEF_REGULAR) == 0))
3889 outrel.r_info = ELF32_R_INFO (h->elf.dynindx, r_type);
3891 else /* It's a local symbol, or one marked to become local. */
3895 /* Add the absolute offset of the symbol. */
3896 outrel.r_addend += relocation;
3898 /* Global plabels need to be processed by the
3899 dynamic linker so that functions have at most one
3900 fptr. For this reason, we need to differentiate
3901 between global and local plabels, which we do by
3902 providing the function symbol for a global plabel
3903 reloc, and no symbol for local plabels. */
3906 && sym_sec->output_section != NULL
3907 && ! bfd_is_abs_section (sym_sec))
3909 indx = elf_section_data (sym_sec->output_section)->dynindx;
3910 /* We are turning this relocation into one
3911 against a section symbol, so subtract out the
3912 output section's address but not the offset
3913 of the input section in the output section. */
3914 outrel.r_addend -= sym_sec->output_section->vma;
3917 outrel.r_info = ELF32_R_INFO (indx, r_type);
3920 /* EH info can cause unaligned DIR32 relocs.
3921 Tweak the reloc type for the dynamic linker. */
3922 if (r_type == R_PARISC_DIR32 && (outrel.r_offset & 3) != 0)
3923 outrel.r_info = ELF32_R_INFO (ELF32_R_SYM (outrel.r_info),
3926 sreloc = elf_section_data (input_section)->sreloc;
3930 loc = (Elf32_External_Rela *) sreloc->contents;
3931 loc += sreloc->reloc_count++;
3932 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
3940 r = final_link_relocate (input_section, contents, rel, relocation,
3943 if (r == bfd_reloc_ok)
3947 sym_name = h->elf.root.root.string;
3950 sym_name = bfd_elf_string_from_elf_section (input_bfd,
3951 symtab_hdr->sh_link,
3953 if (sym_name == NULL)
3955 if (*sym_name == '\0')
3956 sym_name = bfd_section_name (input_bfd, sym_sec);
3959 howto = elf_hppa_howto_table + r_type;
3961 if (r == bfd_reloc_undefined || r == bfd_reloc_notsupported)
3963 (*_bfd_error_handler)
3964 (_("%s(%s+0x%lx): cannot handle %s for %s"),
3965 bfd_archive_filename (input_bfd),
3966 input_section->name,
3967 (long) rel->r_offset,
3970 bfd_set_error (bfd_error_bad_value);
3975 if (!((*info->callbacks->reloc_overflow)
3976 (info, sym_name, howto->name, (bfd_vma) 0,
3977 input_bfd, input_section, rel->r_offset)))
3985 /* Comparison function for qsort to sort unwind section during a
3989 hppa_unwind_entry_compare (a, b)
3993 const bfd_byte *ap, *bp;
3994 unsigned long av, bv;
3996 ap = (const bfd_byte *) a;
3997 av = (unsigned long) ap[0] << 24;
3998 av |= (unsigned long) ap[1] << 16;
3999 av |= (unsigned long) ap[2] << 8;
4000 av |= (unsigned long) ap[3];
4002 bp = (const bfd_byte *) b;
4003 bv = (unsigned long) bp[0] << 24;
4004 bv |= (unsigned long) bp[1] << 16;
4005 bv |= (unsigned long) bp[2] << 8;
4006 bv |= (unsigned long) bp[3];
4008 return av < bv ? -1 : av > bv ? 1 : 0;
4011 /* Finish up dynamic symbol handling. We set the contents of various
4012 dynamic sections here. */
4015 elf32_hppa_finish_dynamic_symbol (output_bfd, info, h, sym)
4017 struct bfd_link_info *info;
4018 struct elf_link_hash_entry *h;
4019 Elf_Internal_Sym *sym;
4021 struct elf32_hppa_link_hash_table *htab;
4024 htab = hppa_link_hash_table (info);
4025 dynobj = htab->elf.dynobj;
4027 if (h->plt.offset != (bfd_vma) -1)
4031 if (h->plt.offset & 1)
4034 /* This symbol has an entry in the procedure linkage table. Set
4037 The format of a plt entry is
4042 if (h->root.type == bfd_link_hash_defined
4043 || h->root.type == bfd_link_hash_defweak)
4045 value = h->root.u.def.value;
4046 if (h->root.u.def.section->output_section != NULL)
4047 value += (h->root.u.def.section->output_offset
4048 + h->root.u.def.section->output_section->vma);
4051 if (! ((struct elf32_hppa_link_hash_entry *) h)->pic_call)
4053 Elf_Internal_Rela rel;
4054 Elf32_External_Rela *loc;
4056 /* Create a dynamic IPLT relocation for this entry. */
4057 rel.r_offset = (h->plt.offset
4058 + htab->splt->output_offset
4059 + htab->splt->output_section->vma);
4060 if (! ((struct elf32_hppa_link_hash_entry *) h)->plt_abs
4061 && h->dynindx != -1)
4063 /* To support lazy linking, the function pointer is
4064 initialised to point to a special stub stored at the
4065 end of the .plt. This is not done for plt entries
4066 with a base-relative dynamic relocation. */
4067 value = (htab->splt->output_offset
4068 + htab->splt->output_section->vma
4069 + htab->splt->_raw_size
4072 rel.r_info = ELF32_R_INFO (h->dynindx, R_PARISC_IPLT);
4077 /* This symbol has been marked to become local, and is
4078 used by a plabel so must be kept in the .plt. */
4079 rel.r_info = ELF32_R_INFO (0, R_PARISC_IPLT);
4080 rel.r_addend = value;
4083 loc = (Elf32_External_Rela *) htab->srelplt->contents;
4084 loc += htab->srelplt->reloc_count++;
4085 bfd_elf32_swap_reloca_out (htab->splt->output_section->owner,
4089 bfd_put_32 (htab->splt->owner,
4091 htab->splt->contents + h->plt.offset);
4092 bfd_put_32 (htab->splt->owner,
4093 elf_gp (htab->splt->output_section->owner),
4094 htab->splt->contents + h->plt.offset + 4);
4095 if (PLABEL_PLT_ENTRY_SIZE != PLT_ENTRY_SIZE
4096 && ((struct elf32_hppa_link_hash_entry *) h)->plabel
4097 && h->dynindx != -1)
4099 memset (htab->splt->contents + h->plt.offset + 8,
4100 0, PLABEL_PLT_ENTRY_SIZE - PLT_ENTRY_SIZE);
4103 if ((h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0)
4105 /* Mark the symbol as undefined, rather than as defined in
4106 the .plt section. Leave the value alone. */
4107 sym->st_shndx = SHN_UNDEF;
4111 if (h->got.offset != (bfd_vma) -1)
4113 Elf_Internal_Rela rel;
4114 Elf32_External_Rela *loc;
4116 /* This symbol has an entry in the global offset table. Set it
4119 rel.r_offset = ((h->got.offset &~ (bfd_vma) 1)
4120 + htab->sgot->output_offset
4121 + htab->sgot->output_section->vma);
4123 /* If this is a -Bsymbolic link and the symbol is defined
4124 locally or was forced to be local because of a version file,
4125 we just want to emit a RELATIVE reloc. The entry in the
4126 global offset table will already have been initialized in the
4127 relocate_section function. */
4129 && (info->symbolic || h->dynindx == -1)
4130 && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR))
4132 rel.r_info = ELF32_R_INFO (0, R_PARISC_DIR32);
4133 rel.r_addend = (h->root.u.def.value
4134 + h->root.u.def.section->output_offset
4135 + h->root.u.def.section->output_section->vma);
4139 if ((h->got.offset & 1) != 0)
4141 bfd_put_32 (output_bfd, (bfd_vma) 0,
4142 htab->sgot->contents + h->got.offset);
4143 rel.r_info = ELF32_R_INFO (h->dynindx, R_PARISC_DIR32);
4147 loc = (Elf32_External_Rela *) htab->srelgot->contents;
4148 loc += htab->srelgot->reloc_count++;
4149 bfd_elf32_swap_reloca_out (output_bfd, &rel, loc);
4152 if ((h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_COPY) != 0)
4155 Elf_Internal_Rela rel;
4156 Elf32_External_Rela *loc;
4158 /* This symbol needs a copy reloc. Set it up. */
4160 if (! (h->dynindx != -1
4161 && (h->root.type == bfd_link_hash_defined
4162 || h->root.type == bfd_link_hash_defweak)))
4167 rel.r_offset = (h->root.u.def.value
4168 + h->root.u.def.section->output_offset
4169 + h->root.u.def.section->output_section->vma);
4171 rel.r_info = ELF32_R_INFO (h->dynindx, R_PARISC_COPY);
4172 loc = (Elf32_External_Rela *) s->contents + s->reloc_count++;
4173 bfd_elf32_swap_reloca_out (output_bfd, &rel, loc);
4176 /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. */
4177 if (h->root.root.string[0] == '_'
4178 && (strcmp (h->root.root.string, "_DYNAMIC") == 0
4179 || strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0))
4181 sym->st_shndx = SHN_ABS;
4187 /* Used to decide how to sort relocs in an optimal manner for the
4188 dynamic linker, before writing them out. */
4190 static enum elf_reloc_type_class
4191 elf32_hppa_reloc_type_class (rela)
4192 const Elf_Internal_Rela *rela;
4194 if (ELF32_R_SYM (rela->r_info) == 0)
4195 return reloc_class_relative;
4197 switch ((int) ELF32_R_TYPE (rela->r_info))
4200 return reloc_class_plt;
4202 return reloc_class_copy;
4204 return reloc_class_normal;
4208 /* Finish up the dynamic sections. */
4211 elf32_hppa_finish_dynamic_sections (output_bfd, info)
4213 struct bfd_link_info *info;
4216 struct elf32_hppa_link_hash_table *htab;
4219 htab = hppa_link_hash_table (info);
4220 dynobj = htab->elf.dynobj;
4222 sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
4224 if (htab->elf.dynamic_sections_created)
4226 Elf32_External_Dyn *dyncon, *dynconend;
4231 dyncon = (Elf32_External_Dyn *) sdyn->contents;
4232 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->_raw_size);
4233 for (; dyncon < dynconend; dyncon++)
4235 Elf_Internal_Dyn dyn;
4238 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
4246 /* Use PLTGOT to set the GOT register. */
4247 dyn.d_un.d_ptr = elf_gp (output_bfd);
4252 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
4257 if (s->_cooked_size != 0)
4258 dyn.d_un.d_val = s->_cooked_size;
4260 dyn.d_un.d_val = s->_raw_size;
4264 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
4268 if (htab->sgot != NULL && htab->sgot->_raw_size != 0)
4270 /* Fill in the first entry in the global offset table.
4271 We use it to point to our dynamic section, if we have one. */
4272 bfd_put_32 (output_bfd,
4274 ? sdyn->output_section->vma + sdyn->output_offset
4276 htab->sgot->contents);
4278 /* The second entry is reserved for use by the dynamic linker. */
4279 memset (htab->sgot->contents + GOT_ENTRY_SIZE, 0, GOT_ENTRY_SIZE);
4281 /* Set .got entry size. */
4282 elf_section_data (htab->sgot->output_section)
4283 ->this_hdr.sh_entsize = GOT_ENTRY_SIZE;
4286 if (htab->splt != NULL && htab->splt->_raw_size != 0)
4288 /* Set plt entry size. */
4289 elf_section_data (htab->splt->output_section)
4290 ->this_hdr.sh_entsize = PLT_ENTRY_SIZE;
4292 if (htab->need_plt_stub)
4294 /* Set up the .plt stub. */
4295 memcpy (htab->splt->contents
4296 + htab->splt->_raw_size - sizeof (plt_stub),
4297 plt_stub, sizeof (plt_stub));
4299 if ((htab->splt->output_offset
4300 + htab->splt->output_section->vma
4301 + htab->splt->_raw_size)
4302 != (htab->sgot->output_offset
4303 + htab->sgot->output_section->vma))
4305 (*_bfd_error_handler)
4306 (_(".got section not immediately after .plt section"));
4315 /* Tweak the OSABI field of the elf header. */
4318 elf32_hppa_post_process_headers (abfd, link_info)
4320 struct bfd_link_info *link_info ATTRIBUTE_UNUSED;
4322 Elf_Internal_Ehdr * i_ehdrp;
4324 i_ehdrp = elf_elfheader (abfd);
4326 if (strcmp (bfd_get_target (abfd), "elf32-hppa-linux") == 0)
4328 i_ehdrp->e_ident[EI_OSABI] = ELFOSABI_LINUX;
4332 i_ehdrp->e_ident[EI_OSABI] = ELFOSABI_HPUX;
4336 /* Called when writing out an object file to decide the type of a
4339 elf32_hppa_elf_get_symbol_type (elf_sym, type)
4340 Elf_Internal_Sym *elf_sym;
4343 if (ELF_ST_TYPE (elf_sym->st_info) == STT_PARISC_MILLI)
4344 return STT_PARISC_MILLI;
4349 /* Misc BFD support code. */
4350 #define bfd_elf32_bfd_is_local_label_name elf_hppa_is_local_label_name
4351 #define bfd_elf32_bfd_reloc_type_lookup elf_hppa_reloc_type_lookup
4352 #define elf_info_to_howto elf_hppa_info_to_howto
4353 #define elf_info_to_howto_rel elf_hppa_info_to_howto_rel
4355 /* Stuff for the BFD linker. */
4356 #define bfd_elf32_bfd_final_link elf32_hppa_final_link
4357 #define bfd_elf32_bfd_link_hash_table_create elf32_hppa_link_hash_table_create
4358 #define elf_backend_add_symbol_hook elf32_hppa_add_symbol_hook
4359 #define elf_backend_adjust_dynamic_symbol elf32_hppa_adjust_dynamic_symbol
4360 #define elf_backend_copy_indirect_symbol elf32_hppa_copy_indirect_symbol
4361 #define elf_backend_check_relocs elf32_hppa_check_relocs
4362 #define elf_backend_create_dynamic_sections elf32_hppa_create_dynamic_sections
4363 #define elf_backend_fake_sections elf_hppa_fake_sections
4364 #define elf_backend_relocate_section elf32_hppa_relocate_section
4365 #define elf_backend_hide_symbol elf32_hppa_hide_symbol
4366 #define elf_backend_finish_dynamic_symbol elf32_hppa_finish_dynamic_symbol
4367 #define elf_backend_finish_dynamic_sections elf32_hppa_finish_dynamic_sections
4368 #define elf_backend_size_dynamic_sections elf32_hppa_size_dynamic_sections
4369 #define elf_backend_gc_mark_hook elf32_hppa_gc_mark_hook
4370 #define elf_backend_gc_sweep_hook elf32_hppa_gc_sweep_hook
4371 #define elf_backend_object_p elf32_hppa_object_p
4372 #define elf_backend_final_write_processing elf_hppa_final_write_processing
4373 #define elf_backend_post_process_headers elf32_hppa_post_process_headers
4374 #define elf_backend_get_symbol_type elf32_hppa_elf_get_symbol_type
4375 #define elf_backend_reloc_type_class elf32_hppa_reloc_type_class
4377 #define elf_backend_can_gc_sections 1
4378 #define elf_backend_plt_alignment 2
4379 #define elf_backend_want_got_plt 0
4380 #define elf_backend_plt_readonly 0
4381 #define elf_backend_want_plt_sym 0
4382 #define elf_backend_got_header_size 8
4384 #define TARGET_BIG_SYM bfd_elf32_hppa_vec
4385 #define TARGET_BIG_NAME "elf32-hppa"
4386 #define ELF_ARCH bfd_arch_hppa
4387 #define ELF_MACHINE_CODE EM_PARISC
4388 #define ELF_MAXPAGESIZE 0x1000
4390 #include "elf32-target.h"
4392 #undef TARGET_BIG_SYM
4393 #define TARGET_BIG_SYM bfd_elf32_hppa_linux_vec
4394 #undef TARGET_BIG_NAME
4395 #define TARGET_BIG_NAME "elf32-hppa-linux"
4397 #define INCLUDED_TARGET_FILE 1
4398 #include "elf32-target.h"