1 /* BFD back-end for HP PA-RISC ELF files.
2 Copyright 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1999, 2000, 2001,
3 2002, 2003 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"
35 #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 GOT_ENTRY_SIZE 4
118 #define ELF_DYNAMIC_INTERPRETER "/lib/ld.so.1"
120 static const bfd_byte plt_stub
[] =
122 0x0e, 0x80, 0x10, 0x96, /* 1: ldw 0(%r20),%r22 */
123 0xea, 0xc0, 0xc0, 0x00, /* bv %r0(%r22) */
124 0x0e, 0x88, 0x10, 0x95, /* ldw 4(%r20),%r21 */
125 #define PLT_STUB_ENTRY (3*4)
126 0xea, 0x9f, 0x1f, 0xdd, /* b,l 1b,%r20 */
127 0xd6, 0x80, 0x1c, 0x1e, /* depi 0,31,2,%r20 */
128 0x00, 0xc0, 0xff, 0xee, /* 9: .word fixup_func */
129 0xde, 0xad, 0xbe, 0xef /* .word fixup_ltp */
132 /* Section name for stubs is the associated section name plus this
134 #define STUB_SUFFIX ".stub"
136 /* We don't need to copy certain PC- or GP-relative dynamic relocs
137 into a shared object's dynamic section. All the relocs of the
138 limited class we are interested in, are absolute. */
139 #ifndef RELATIVE_DYNRELOCS
140 #define RELATIVE_DYNRELOCS 0
141 #define IS_ABSOLUTE_RELOC(r_type) 1
144 enum elf32_hppa_stub_type
{
145 hppa_stub_long_branch
,
146 hppa_stub_long_branch_shared
,
148 hppa_stub_import_shared
,
153 struct elf32_hppa_stub_hash_entry
{
155 /* Base hash table entry structure. */
156 struct bfd_hash_entry root
;
158 /* The stub section. */
161 /* Offset within stub_sec of the beginning of this stub. */
164 /* Given the symbol's value and its section we can determine its final
165 value when building the stubs (so the stub knows where to jump. */
166 bfd_vma target_value
;
167 asection
*target_section
;
169 enum elf32_hppa_stub_type stub_type
;
171 /* The symbol table entry, if any, that this was derived from. */
172 struct elf32_hppa_link_hash_entry
*h
;
174 /* Where this stub is being called from, or, in the case of combined
175 stub sections, the first input section in the group. */
179 struct elf32_hppa_link_hash_entry
{
181 struct elf_link_hash_entry elf
;
183 /* A pointer to the most recently used stub hash entry against this
185 struct elf32_hppa_stub_hash_entry
*stub_cache
;
187 /* Used to count relocations for delayed sizing of relocation
189 struct elf32_hppa_dyn_reloc_entry
{
191 /* Next relocation in the chain. */
192 struct elf32_hppa_dyn_reloc_entry
*next
;
194 /* The input section of the reloc. */
197 /* Number of relocs copied in this section. */
200 #if RELATIVE_DYNRELOCS
201 /* Number of relative relocs copied for the input section. */
202 bfd_size_type relative_count
;
206 /* Set if the only reason we need a .plt entry is for a non-PIC to
207 PIC function call. */
208 unsigned int pic_call
:1;
210 /* Set if this symbol is used by a plabel reloc. */
211 unsigned int plabel
:1;
214 struct elf32_hppa_link_hash_table
{
216 /* The main hash table. */
217 struct elf_link_hash_table elf
;
219 /* The stub hash table. */
220 struct bfd_hash_table stub_hash_table
;
222 /* Linker stub bfd. */
225 /* Linker call-backs. */
226 asection
* (*add_stub_section
) (const char *, asection
*);
227 void (*layout_sections_again
) (void);
229 /* Array to keep track of which stub sections have been created, and
230 information on stub grouping. */
232 /* This is the section to which stubs in the group will be
235 /* The stub section. */
239 /* Assorted information used by elf32_hppa_size_stubs. */
240 unsigned int bfd_count
;
242 asection
**input_list
;
243 Elf_Internal_Sym
**all_local_syms
;
245 /* Short-cuts to get to dynamic linker sections. */
253 /* Used during a final link to store the base of the text and data
254 segments so that we can perform SEGREL relocations. */
255 bfd_vma text_segment_base
;
256 bfd_vma data_segment_base
;
258 /* Whether we support multiple sub-spaces for shared libs. */
259 unsigned int multi_subspace
:1;
261 /* Flags set when various size branches are detected. Used to
262 select suitable defaults for the stub group size. */
263 unsigned int has_12bit_branch
:1;
264 unsigned int has_17bit_branch
:1;
265 unsigned int has_22bit_branch
:1;
267 /* Set if we need a .plt stub to support lazy dynamic linking. */
268 unsigned int need_plt_stub
:1;
270 /* Small local sym to section mapping cache. */
271 struct sym_sec_cache sym_sec
;
274 /* Various hash macros and functions. */
275 #define hppa_link_hash_table(p) \
276 ((struct elf32_hppa_link_hash_table *) ((p)->hash))
278 #define hppa_stub_hash_lookup(table, string, create, copy) \
279 ((struct elf32_hppa_stub_hash_entry *) \
280 bfd_hash_lookup ((table), (string), (create), (copy)))
282 /* Assorted hash table functions. */
284 /* Initialize an entry in the stub hash table. */
286 static struct bfd_hash_entry
*
287 stub_hash_newfunc (struct bfd_hash_entry
*entry
,
288 struct bfd_hash_table
*table
,
291 /* Allocate the structure if it has not already been allocated by a
295 entry
= bfd_hash_allocate (table
,
296 sizeof (struct elf32_hppa_stub_hash_entry
));
301 /* Call the allocation method of the superclass. */
302 entry
= bfd_hash_newfunc (entry
, table
, string
);
305 struct elf32_hppa_stub_hash_entry
*eh
;
307 /* Initialize the local fields. */
308 eh
= (struct elf32_hppa_stub_hash_entry
*) entry
;
311 eh
->target_value
= 0;
312 eh
->target_section
= NULL
;
313 eh
->stub_type
= hppa_stub_long_branch
;
321 /* Initialize an entry in the link hash table. */
323 static struct bfd_hash_entry
*
324 hppa_link_hash_newfunc (struct bfd_hash_entry
*entry
,
325 struct bfd_hash_table
*table
,
328 /* Allocate the structure if it has not already been allocated by a
332 entry
= bfd_hash_allocate (table
,
333 sizeof (struct elf32_hppa_link_hash_entry
));
338 /* Call the allocation method of the superclass. */
339 entry
= _bfd_elf_link_hash_newfunc (entry
, table
, string
);
342 struct elf32_hppa_link_hash_entry
*eh
;
344 /* Initialize the local fields. */
345 eh
= (struct elf32_hppa_link_hash_entry
*) entry
;
346 eh
->stub_cache
= NULL
;
347 eh
->dyn_relocs
= NULL
;
355 /* Create the derived linker hash table. The PA ELF port uses the derived
356 hash table to keep information specific to the PA ELF linker (without
357 using static variables). */
359 static struct bfd_link_hash_table
*
360 elf32_hppa_link_hash_table_create (bfd
*abfd
)
362 struct elf32_hppa_link_hash_table
*ret
;
363 bfd_size_type amt
= sizeof (*ret
);
365 ret
= bfd_malloc (amt
);
369 if (!_bfd_elf_link_hash_table_init (&ret
->elf
, abfd
, hppa_link_hash_newfunc
))
375 /* Init the stub hash table too. */
376 if (!bfd_hash_table_init (&ret
->stub_hash_table
, stub_hash_newfunc
))
379 ret
->stub_bfd
= NULL
;
380 ret
->add_stub_section
= NULL
;
381 ret
->layout_sections_again
= NULL
;
382 ret
->stub_group
= NULL
;
389 ret
->text_segment_base
= (bfd_vma
) -1;
390 ret
->data_segment_base
= (bfd_vma
) -1;
391 ret
->multi_subspace
= 0;
392 ret
->has_12bit_branch
= 0;
393 ret
->has_17bit_branch
= 0;
394 ret
->has_22bit_branch
= 0;
395 ret
->need_plt_stub
= 0;
396 ret
->sym_sec
.abfd
= NULL
;
398 return &ret
->elf
.root
;
401 /* Free the derived linker hash table. */
404 elf32_hppa_link_hash_table_free (struct bfd_link_hash_table
*hash
)
406 struct elf32_hppa_link_hash_table
*ret
407 = (struct elf32_hppa_link_hash_table
*) hash
;
409 bfd_hash_table_free (&ret
->stub_hash_table
);
410 _bfd_generic_link_hash_table_free (hash
);
413 /* Build a name for an entry in the stub hash table. */
416 hppa_stub_name (const asection
*input_section
,
417 const asection
*sym_sec
,
418 const struct elf32_hppa_link_hash_entry
*hash
,
419 const Elf_Internal_Rela
*rel
)
426 len
= 8 + 1 + strlen (hash
->elf
.root
.root
.string
) + 1 + 8 + 1;
427 stub_name
= bfd_malloc (len
);
428 if (stub_name
!= NULL
)
430 sprintf (stub_name
, "%08x_%s+%x",
431 input_section
->id
& 0xffffffff,
432 hash
->elf
.root
.root
.string
,
433 (int) rel
->r_addend
& 0xffffffff);
438 len
= 8 + 1 + 8 + 1 + 8 + 1 + 8 + 1;
439 stub_name
= bfd_malloc (len
);
440 if (stub_name
!= NULL
)
442 sprintf (stub_name
, "%08x_%x:%x+%x",
443 input_section
->id
& 0xffffffff,
444 sym_sec
->id
& 0xffffffff,
445 (int) ELF32_R_SYM (rel
->r_info
) & 0xffffffff,
446 (int) rel
->r_addend
& 0xffffffff);
452 /* Look up an entry in the stub hash. Stub entries are cached because
453 creating the stub name takes a bit of time. */
455 static struct elf32_hppa_stub_hash_entry
*
456 hppa_get_stub_entry (const asection
*input_section
,
457 const asection
*sym_sec
,
458 struct elf32_hppa_link_hash_entry
*hash
,
459 const Elf_Internal_Rela
*rel
,
460 struct elf32_hppa_link_hash_table
*htab
)
462 struct elf32_hppa_stub_hash_entry
*stub_entry
;
463 const asection
*id_sec
;
465 /* If this input section is part of a group of sections sharing one
466 stub section, then use the id of the first section in the group.
467 Stub names need to include a section id, as there may well be
468 more than one stub used to reach say, printf, and we need to
469 distinguish between them. */
470 id_sec
= htab
->stub_group
[input_section
->id
].link_sec
;
472 if (hash
!= NULL
&& hash
->stub_cache
!= NULL
473 && hash
->stub_cache
->h
== hash
474 && hash
->stub_cache
->id_sec
== id_sec
)
476 stub_entry
= hash
->stub_cache
;
482 stub_name
= hppa_stub_name (id_sec
, sym_sec
, hash
, rel
);
483 if (stub_name
== NULL
)
486 stub_entry
= hppa_stub_hash_lookup (&htab
->stub_hash_table
,
487 stub_name
, FALSE
, FALSE
);
489 hash
->stub_cache
= stub_entry
;
497 /* Add a new stub entry to the stub hash. Not all fields of the new
498 stub entry are initialised. */
500 static struct elf32_hppa_stub_hash_entry
*
501 hppa_add_stub (const char *stub_name
,
503 struct elf32_hppa_link_hash_table
*htab
)
507 struct elf32_hppa_stub_hash_entry
*stub_entry
;
509 link_sec
= htab
->stub_group
[section
->id
].link_sec
;
510 stub_sec
= htab
->stub_group
[section
->id
].stub_sec
;
511 if (stub_sec
== NULL
)
513 stub_sec
= htab
->stub_group
[link_sec
->id
].stub_sec
;
514 if (stub_sec
== NULL
)
520 namelen
= strlen (link_sec
->name
);
521 len
= namelen
+ sizeof (STUB_SUFFIX
);
522 s_name
= bfd_alloc (htab
->stub_bfd
, len
);
526 memcpy (s_name
, link_sec
->name
, namelen
);
527 memcpy (s_name
+ namelen
, STUB_SUFFIX
, sizeof (STUB_SUFFIX
));
528 stub_sec
= (*htab
->add_stub_section
) (s_name
, link_sec
);
529 if (stub_sec
== NULL
)
531 htab
->stub_group
[link_sec
->id
].stub_sec
= stub_sec
;
533 htab
->stub_group
[section
->id
].stub_sec
= stub_sec
;
536 /* Enter this entry into the linker stub hash table. */
537 stub_entry
= hppa_stub_hash_lookup (&htab
->stub_hash_table
, stub_name
,
539 if (stub_entry
== NULL
)
541 (*_bfd_error_handler
) (_("%s: cannot create stub entry %s"),
542 bfd_archive_filename (section
->owner
),
547 stub_entry
->stub_sec
= stub_sec
;
548 stub_entry
->stub_offset
= 0;
549 stub_entry
->id_sec
= link_sec
;
553 /* Determine the type of stub needed, if any, for a call. */
555 static enum elf32_hppa_stub_type
556 hppa_type_of_stub (asection
*input_sec
,
557 const Elf_Internal_Rela
*rel
,
558 struct elf32_hppa_link_hash_entry
*hash
,
562 bfd_vma branch_offset
;
563 bfd_vma max_branch_offset
;
567 && hash
->elf
.plt
.offset
!= (bfd_vma
) -1
568 && (hash
->elf
.dynindx
!= -1 || hash
->pic_call
)
571 /* We need an import stub. Decide between hppa_stub_import
572 and hppa_stub_import_shared later. */
573 return hppa_stub_import
;
576 /* Determine where the call point is. */
577 location
= (input_sec
->output_offset
578 + input_sec
->output_section
->vma
581 branch_offset
= destination
- location
- 8;
582 r_type
= ELF32_R_TYPE (rel
->r_info
);
584 /* Determine if a long branch stub is needed. parisc branch offsets
585 are relative to the second instruction past the branch, ie. +8
586 bytes on from the branch instruction location. The offset is
587 signed and counts in units of 4 bytes. */
588 if (r_type
== (unsigned int) R_PARISC_PCREL17F
)
590 max_branch_offset
= (1 << (17-1)) << 2;
592 else if (r_type
== (unsigned int) R_PARISC_PCREL12F
)
594 max_branch_offset
= (1 << (12-1)) << 2;
596 else /* R_PARISC_PCREL22F. */
598 max_branch_offset
= (1 << (22-1)) << 2;
601 if (branch_offset
+ max_branch_offset
>= 2*max_branch_offset
)
602 return hppa_stub_long_branch
;
604 return hppa_stub_none
;
607 /* Build one linker stub as defined by the stub hash table entry GEN_ENTRY.
608 IN_ARG contains the link info pointer. */
610 #define LDIL_R1 0x20200000 /* ldil LR'XXX,%r1 */
611 #define BE_SR4_R1 0xe0202002 /* be,n RR'XXX(%sr4,%r1) */
613 #define BL_R1 0xe8200000 /* b,l .+8,%r1 */
614 #define ADDIL_R1 0x28200000 /* addil LR'XXX,%r1,%r1 */
615 #define DEPI_R1 0xd4201c1e /* depi 0,31,2,%r1 */
617 #define ADDIL_DP 0x2b600000 /* addil LR'XXX,%dp,%r1 */
618 #define LDW_R1_R21 0x48350000 /* ldw RR'XXX(%sr0,%r1),%r21 */
619 #define BV_R0_R21 0xeaa0c000 /* bv %r0(%r21) */
620 #define LDW_R1_R19 0x48330000 /* ldw RR'XXX(%sr0,%r1),%r19 */
622 #define ADDIL_R19 0x2a600000 /* addil LR'XXX,%r19,%r1 */
623 #define LDW_R1_DP 0x483b0000 /* ldw RR'XXX(%sr0,%r1),%dp */
625 #define LDSID_R21_R1 0x02a010a1 /* ldsid (%sr0,%r21),%r1 */
626 #define MTSP_R1 0x00011820 /* mtsp %r1,%sr0 */
627 #define BE_SR0_R21 0xe2a00000 /* be 0(%sr0,%r21) */
628 #define STW_RP 0x6bc23fd1 /* stw %rp,-24(%sr0,%sp) */
630 #define BL22_RP 0xe800a002 /* b,l,n XXX,%rp */
631 #define BL_RP 0xe8400002 /* b,l,n XXX,%rp */
632 #define NOP 0x08000240 /* nop */
633 #define LDW_RP 0x4bc23fd1 /* ldw -24(%sr0,%sp),%rp */
634 #define LDSID_RP_R1 0x004010a1 /* ldsid (%sr0,%rp),%r1 */
635 #define BE_SR0_RP 0xe0400002 /* be,n 0(%sr0,%rp) */
642 #define LDW_R1_DLT LDW_R1_R19
644 #define LDW_R1_DLT LDW_R1_DP
648 hppa_build_one_stub (struct bfd_hash_entry
*gen_entry
, void *in_arg
)
650 struct elf32_hppa_stub_hash_entry
*stub_entry
;
651 struct bfd_link_info
*info
;
652 struct elf32_hppa_link_hash_table
*htab
;
662 /* Massage our args to the form they really have. */
663 stub_entry
= (struct elf32_hppa_stub_hash_entry
*) gen_entry
;
666 htab
= hppa_link_hash_table (info
);
667 stub_sec
= stub_entry
->stub_sec
;
669 /* Make a note of the offset within the stubs for this entry. */
670 stub_entry
->stub_offset
= stub_sec
->_raw_size
;
671 loc
= stub_sec
->contents
+ stub_entry
->stub_offset
;
673 stub_bfd
= stub_sec
->owner
;
675 switch (stub_entry
->stub_type
)
677 case hppa_stub_long_branch
:
678 /* Create the long branch. A long branch is formed with "ldil"
679 loading the upper bits of the target address into a register,
680 then branching with "be" which adds in the lower bits.
681 The "be" has its delay slot nullified. */
682 sym_value
= (stub_entry
->target_value
683 + stub_entry
->target_section
->output_offset
684 + stub_entry
->target_section
->output_section
->vma
);
686 val
= hppa_field_adjust (sym_value
, 0, e_lrsel
);
687 insn
= hppa_rebuild_insn ((int) LDIL_R1
, val
, 21);
688 bfd_put_32 (stub_bfd
, insn
, loc
);
690 val
= hppa_field_adjust (sym_value
, 0, e_rrsel
) >> 2;
691 insn
= hppa_rebuild_insn ((int) BE_SR4_R1
, val
, 17);
692 bfd_put_32 (stub_bfd
, insn
, loc
+ 4);
697 case hppa_stub_long_branch_shared
:
698 /* Branches are relative. This is where we are going to. */
699 sym_value
= (stub_entry
->target_value
700 + stub_entry
->target_section
->output_offset
701 + stub_entry
->target_section
->output_section
->vma
);
703 /* And this is where we are coming from, more or less. */
704 sym_value
-= (stub_entry
->stub_offset
705 + stub_sec
->output_offset
706 + stub_sec
->output_section
->vma
);
708 bfd_put_32 (stub_bfd
, (bfd_vma
) BL_R1
, loc
);
709 val
= hppa_field_adjust (sym_value
, (bfd_signed_vma
) -8, e_lrsel
);
710 insn
= hppa_rebuild_insn ((int) ADDIL_R1
, val
, 21);
711 bfd_put_32 (stub_bfd
, insn
, loc
+ 4);
713 val
= hppa_field_adjust (sym_value
, (bfd_signed_vma
) -8, e_rrsel
) >> 2;
714 insn
= hppa_rebuild_insn ((int) BE_SR4_R1
, val
, 17);
715 bfd_put_32 (stub_bfd
, insn
, loc
+ 8);
719 case hppa_stub_import
:
720 case hppa_stub_import_shared
:
721 off
= stub_entry
->h
->elf
.plt
.offset
;
722 if (off
>= (bfd_vma
) -2)
725 off
&= ~ (bfd_vma
) 1;
727 + htab
->splt
->output_offset
728 + htab
->splt
->output_section
->vma
729 - elf_gp (htab
->splt
->output_section
->owner
));
733 if (stub_entry
->stub_type
== hppa_stub_import_shared
)
736 val
= hppa_field_adjust (sym_value
, 0, e_lrsel
),
737 insn
= hppa_rebuild_insn ((int) insn
, val
, 21);
738 bfd_put_32 (stub_bfd
, insn
, loc
);
740 /* It is critical to use lrsel/rrsel here because we are using
741 two different offsets (+0 and +4) from sym_value. If we use
742 lsel/rsel then with unfortunate sym_values we will round
743 sym_value+4 up to the next 2k block leading to a mis-match
744 between the lsel and rsel value. */
745 val
= hppa_field_adjust (sym_value
, 0, e_rrsel
);
746 insn
= hppa_rebuild_insn ((int) LDW_R1_R21
, val
, 14);
747 bfd_put_32 (stub_bfd
, insn
, loc
+ 4);
749 if (htab
->multi_subspace
)
751 val
= hppa_field_adjust (sym_value
, (bfd_signed_vma
) 4, e_rrsel
);
752 insn
= hppa_rebuild_insn ((int) LDW_R1_DLT
, val
, 14);
753 bfd_put_32 (stub_bfd
, insn
, loc
+ 8);
755 bfd_put_32 (stub_bfd
, (bfd_vma
) LDSID_R21_R1
, loc
+ 12);
756 bfd_put_32 (stub_bfd
, (bfd_vma
) MTSP_R1
, loc
+ 16);
757 bfd_put_32 (stub_bfd
, (bfd_vma
) BE_SR0_R21
, loc
+ 20);
758 bfd_put_32 (stub_bfd
, (bfd_vma
) STW_RP
, loc
+ 24);
764 bfd_put_32 (stub_bfd
, (bfd_vma
) BV_R0_R21
, loc
+ 8);
765 val
= hppa_field_adjust (sym_value
, (bfd_signed_vma
) 4, e_rrsel
);
766 insn
= hppa_rebuild_insn ((int) LDW_R1_DLT
, val
, 14);
767 bfd_put_32 (stub_bfd
, insn
, loc
+ 12);
773 && stub_entry
->h
!= NULL
774 && stub_entry
->h
->pic_call
)
776 /* Build the .plt entry needed to call a PIC function from
777 statically linked code. We don't need any relocs. */
779 struct elf32_hppa_link_hash_entry
*eh
;
782 dynobj
= htab
->elf
.dynobj
;
783 eh
= (struct elf32_hppa_link_hash_entry
*) stub_entry
->h
;
785 if (eh
->elf
.root
.type
!= bfd_link_hash_defined
786 && eh
->elf
.root
.type
!= bfd_link_hash_defweak
)
789 value
= (eh
->elf
.root
.u
.def
.value
790 + eh
->elf
.root
.u
.def
.section
->output_offset
791 + eh
->elf
.root
.u
.def
.section
->output_section
->vma
);
793 /* Fill in the entry in the procedure linkage table.
795 The format of a plt entry is
799 bfd_put_32 (htab
->splt
->owner
, value
,
800 htab
->splt
->contents
+ off
);
801 value
= elf_gp (htab
->splt
->output_section
->owner
);
802 bfd_put_32 (htab
->splt
->owner
, value
,
803 htab
->splt
->contents
+ off
+ 4);
807 case hppa_stub_export
:
808 /* Branches are relative. This is where we are going to. */
809 sym_value
= (stub_entry
->target_value
810 + stub_entry
->target_section
->output_offset
811 + stub_entry
->target_section
->output_section
->vma
);
813 /* And this is where we are coming from. */
814 sym_value
-= (stub_entry
->stub_offset
815 + stub_sec
->output_offset
816 + stub_sec
->output_section
->vma
);
818 if (sym_value
- 8 + (1 << (17 + 1)) >= (1 << (17 + 2))
819 && (!htab
->has_22bit_branch
820 || sym_value
- 8 + (1 << (22 + 1)) >= (1 << (22 + 2))))
822 (*_bfd_error_handler
)
823 (_("%s(%s+0x%lx): cannot reach %s, recompile with -ffunction-sections"),
824 bfd_archive_filename (stub_entry
->target_section
->owner
),
826 (long) stub_entry
->stub_offset
,
827 stub_entry
->root
.string
);
828 bfd_set_error (bfd_error_bad_value
);
832 val
= hppa_field_adjust (sym_value
, (bfd_signed_vma
) -8, e_fsel
) >> 2;
833 if (!htab
->has_22bit_branch
)
834 insn
= hppa_rebuild_insn ((int) BL_RP
, val
, 17);
836 insn
= hppa_rebuild_insn ((int) BL22_RP
, val
, 22);
837 bfd_put_32 (stub_bfd
, insn
, loc
);
839 bfd_put_32 (stub_bfd
, (bfd_vma
) NOP
, loc
+ 4);
840 bfd_put_32 (stub_bfd
, (bfd_vma
) LDW_RP
, loc
+ 8);
841 bfd_put_32 (stub_bfd
, (bfd_vma
) LDSID_RP_R1
, loc
+ 12);
842 bfd_put_32 (stub_bfd
, (bfd_vma
) MTSP_R1
, loc
+ 16);
843 bfd_put_32 (stub_bfd
, (bfd_vma
) BE_SR0_RP
, loc
+ 20);
845 /* Point the function symbol at the stub. */
846 stub_entry
->h
->elf
.root
.u
.def
.section
= stub_sec
;
847 stub_entry
->h
->elf
.root
.u
.def
.value
= stub_sec
->_raw_size
;
857 stub_sec
->_raw_size
+= size
;
883 /* As above, but don't actually build the stub. Just bump offset so
884 we know stub section sizes. */
887 hppa_size_one_stub (struct bfd_hash_entry
*gen_entry
, void *in_arg
)
889 struct elf32_hppa_stub_hash_entry
*stub_entry
;
890 struct elf32_hppa_link_hash_table
*htab
;
893 /* Massage our args to the form they really have. */
894 stub_entry
= (struct elf32_hppa_stub_hash_entry
*) gen_entry
;
897 if (stub_entry
->stub_type
== hppa_stub_long_branch
)
899 else if (stub_entry
->stub_type
== hppa_stub_long_branch_shared
)
901 else if (stub_entry
->stub_type
== hppa_stub_export
)
903 else /* hppa_stub_import or hppa_stub_import_shared. */
905 if (htab
->multi_subspace
)
911 stub_entry
->stub_sec
->_raw_size
+= size
;
915 /* Return nonzero if ABFD represents an HPPA ELF32 file.
916 Additionally we set the default architecture and machine. */
919 elf32_hppa_object_p (bfd
*abfd
)
921 Elf_Internal_Ehdr
* i_ehdrp
;
924 i_ehdrp
= elf_elfheader (abfd
);
925 if (strcmp (bfd_get_target (abfd
), "elf32-hppa-linux") == 0)
927 if (i_ehdrp
->e_ident
[EI_OSABI
] != ELFOSABI_LINUX
)
932 if (i_ehdrp
->e_ident
[EI_OSABI
] != ELFOSABI_HPUX
)
936 flags
= i_ehdrp
->e_flags
;
937 switch (flags
& (EF_PARISC_ARCH
| EF_PARISC_WIDE
))
940 return bfd_default_set_arch_mach (abfd
, bfd_arch_hppa
, 10);
942 return bfd_default_set_arch_mach (abfd
, bfd_arch_hppa
, 11);
944 return bfd_default_set_arch_mach (abfd
, bfd_arch_hppa
, 20);
945 case EFA_PARISC_2_0
| EF_PARISC_WIDE
:
946 return bfd_default_set_arch_mach (abfd
, bfd_arch_hppa
, 25);
951 /* Create the .plt and .got sections, and set up our hash table
952 short-cuts to various dynamic sections. */
955 elf32_hppa_create_dynamic_sections (bfd
*abfd
, struct bfd_link_info
*info
)
957 struct elf32_hppa_link_hash_table
*htab
;
959 /* Don't try to create the .plt and .got twice. */
960 htab
= hppa_link_hash_table (info
);
961 if (htab
->splt
!= NULL
)
964 /* Call the generic code to do most of the work. */
965 if (! _bfd_elf_create_dynamic_sections (abfd
, info
))
968 htab
->splt
= bfd_get_section_by_name (abfd
, ".plt");
969 htab
->srelplt
= bfd_get_section_by_name (abfd
, ".rela.plt");
971 htab
->sgot
= bfd_get_section_by_name (abfd
, ".got");
972 htab
->srelgot
= bfd_make_section (abfd
, ".rela.got");
973 if (htab
->srelgot
== NULL
974 || ! bfd_set_section_flags (abfd
, htab
->srelgot
,
981 || ! bfd_set_section_alignment (abfd
, htab
->srelgot
, 2))
984 htab
->sdynbss
= bfd_get_section_by_name (abfd
, ".dynbss");
985 htab
->srelbss
= bfd_get_section_by_name (abfd
, ".rela.bss");
990 /* Copy the extra info we tack onto an elf_link_hash_entry. */
993 elf32_hppa_copy_indirect_symbol (const struct elf_backend_data
*bed
,
994 struct elf_link_hash_entry
*dir
,
995 struct elf_link_hash_entry
*ind
)
997 struct elf32_hppa_link_hash_entry
*edir
, *eind
;
999 edir
= (struct elf32_hppa_link_hash_entry
*) dir
;
1000 eind
= (struct elf32_hppa_link_hash_entry
*) ind
;
1002 if (eind
->dyn_relocs
!= NULL
)
1004 if (edir
->dyn_relocs
!= NULL
)
1006 struct elf32_hppa_dyn_reloc_entry
**pp
;
1007 struct elf32_hppa_dyn_reloc_entry
*p
;
1009 if (ind
->root
.type
== bfd_link_hash_indirect
)
1012 /* Add reloc counts against the weak sym to the strong sym
1013 list. Merge any entries against the same section. */
1014 for (pp
= &eind
->dyn_relocs
; (p
= *pp
) != NULL
; )
1016 struct elf32_hppa_dyn_reloc_entry
*q
;
1018 for (q
= edir
->dyn_relocs
; q
!= NULL
; q
= q
->next
)
1019 if (q
->sec
== p
->sec
)
1021 #if RELATIVE_DYNRELOCS
1022 q
->relative_count
+= p
->relative_count
;
1024 q
->count
+= p
->count
;
1031 *pp
= edir
->dyn_relocs
;
1034 edir
->dyn_relocs
= eind
->dyn_relocs
;
1035 eind
->dyn_relocs
= NULL
;
1038 _bfd_elf_link_hash_copy_indirect (bed
, dir
, ind
);
1041 /* Look through the relocs for a section during the first phase, and
1042 calculate needed space in the global offset table, procedure linkage
1043 table, and dynamic reloc sections. At this point we haven't
1044 necessarily read all the input files. */
1047 elf32_hppa_check_relocs (bfd
*abfd
,
1048 struct bfd_link_info
*info
,
1050 const Elf_Internal_Rela
*relocs
)
1052 Elf_Internal_Shdr
*symtab_hdr
;
1053 struct elf_link_hash_entry
**sym_hashes
;
1054 const Elf_Internal_Rela
*rel
;
1055 const Elf_Internal_Rela
*rel_end
;
1056 struct elf32_hppa_link_hash_table
*htab
;
1058 asection
*stubreloc
;
1060 if (info
->relocatable
)
1063 htab
= hppa_link_hash_table (info
);
1064 symtab_hdr
= &elf_tdata (abfd
)->symtab_hdr
;
1065 sym_hashes
= elf_sym_hashes (abfd
);
1069 rel_end
= relocs
+ sec
->reloc_count
;
1070 for (rel
= relocs
; rel
< rel_end
; rel
++)
1079 unsigned int r_symndx
, r_type
;
1080 struct elf32_hppa_link_hash_entry
*h
;
1083 r_symndx
= ELF32_R_SYM (rel
->r_info
);
1085 if (r_symndx
< symtab_hdr
->sh_info
)
1088 h
= ((struct elf32_hppa_link_hash_entry
*)
1089 sym_hashes
[r_symndx
- symtab_hdr
->sh_info
]);
1091 r_type
= ELF32_R_TYPE (rel
->r_info
);
1095 case R_PARISC_DLTIND14F
:
1096 case R_PARISC_DLTIND14R
:
1097 case R_PARISC_DLTIND21L
:
1098 /* This symbol requires a global offset table entry. */
1099 need_entry
= NEED_GOT
;
1101 /* Mark this section as containing PIC code. */
1102 sec
->flags
|= SEC_HAS_GOT_REF
;
1105 case R_PARISC_PLABEL14R
: /* "Official" procedure labels. */
1106 case R_PARISC_PLABEL21L
:
1107 case R_PARISC_PLABEL32
:
1108 /* If the addend is non-zero, we break badly. */
1109 if (rel
->r_addend
!= 0)
1112 /* If we are creating a shared library, then we need to
1113 create a PLT entry for all PLABELs, because PLABELs with
1114 local symbols may be passed via a pointer to another
1115 object. Additionally, output a dynamic relocation
1116 pointing to the PLT entry.
1117 For executables, the original 32-bit ABI allowed two
1118 different styles of PLABELs (function pointers): For
1119 global functions, the PLABEL word points into the .plt
1120 two bytes past a (function address, gp) pair, and for
1121 local functions the PLABEL points directly at the
1122 function. The magic +2 for the first type allows us to
1123 differentiate between the two. As you can imagine, this
1124 is a real pain when it comes to generating code to call
1125 functions indirectly or to compare function pointers.
1126 We avoid the mess by always pointing a PLABEL into the
1127 .plt, even for local functions. */
1128 need_entry
= PLT_PLABEL
| NEED_PLT
| NEED_DYNREL
;
1131 case R_PARISC_PCREL12F
:
1132 htab
->has_12bit_branch
= 1;
1135 case R_PARISC_PCREL17C
:
1136 case R_PARISC_PCREL17F
:
1137 htab
->has_17bit_branch
= 1;
1140 case R_PARISC_PCREL22F
:
1141 htab
->has_22bit_branch
= 1;
1143 /* Function calls might need to go through the .plt, and
1144 might require long branch stubs. */
1147 /* We know local syms won't need a .plt entry, and if
1148 they need a long branch stub we can't guarantee that
1149 we can reach the stub. So just flag an error later
1150 if we're doing a shared link and find we need a long
1156 /* Global symbols will need a .plt entry if they remain
1157 global, and in most cases won't need a long branch
1158 stub. Unfortunately, we have to cater for the case
1159 where a symbol is forced local by versioning, or due
1160 to symbolic linking, and we lose the .plt entry. */
1161 need_entry
= NEED_PLT
;
1162 if (h
->elf
.type
== STT_PARISC_MILLI
)
1167 case R_PARISC_SEGBASE
: /* Used to set segment base. */
1168 case R_PARISC_SEGREL32
: /* Relative reloc, used for unwind. */
1169 case R_PARISC_PCREL14F
: /* PC relative load/store. */
1170 case R_PARISC_PCREL14R
:
1171 case R_PARISC_PCREL17R
: /* External branches. */
1172 case R_PARISC_PCREL21L
: /* As above, and for load/store too. */
1173 /* We don't need to propagate the relocation if linking a
1174 shared object since these are section relative. */
1177 case R_PARISC_DPREL14F
: /* Used for gp rel data load/store. */
1178 case R_PARISC_DPREL14R
:
1179 case R_PARISC_DPREL21L
:
1182 (*_bfd_error_handler
)
1183 (_("%s: relocation %s can not be used when making a shared object; recompile with -fPIC"),
1184 bfd_archive_filename (abfd
),
1185 elf_hppa_howto_table
[r_type
].name
);
1186 bfd_set_error (bfd_error_bad_value
);
1191 case R_PARISC_DIR17F
: /* Used for external branches. */
1192 case R_PARISC_DIR17R
:
1193 case R_PARISC_DIR14F
: /* Used for load/store from absolute locn. */
1194 case R_PARISC_DIR14R
:
1195 case R_PARISC_DIR21L
: /* As above, and for ext branches too. */
1197 /* Help debug shared library creation. Any of the above
1198 relocs can be used in shared libs, but they may cause
1199 pages to become unshared. */
1202 (*_bfd_error_handler
)
1203 (_("%s: relocation %s should not be used when making a shared object; recompile with -fPIC"),
1204 bfd_archive_filename (abfd
),
1205 elf_hppa_howto_table
[r_type
].name
);
1210 case R_PARISC_DIR32
: /* .word relocs. */
1211 /* We may want to output a dynamic relocation later. */
1212 need_entry
= NEED_DYNREL
;
1215 /* This relocation describes the C++ object vtable hierarchy.
1216 Reconstruct it for later use during GC. */
1217 case R_PARISC_GNU_VTINHERIT
:
1218 if (!_bfd_elf32_gc_record_vtinherit (abfd
, sec
,
1219 &h
->elf
, rel
->r_offset
))
1223 /* This relocation describes which C++ vtable entries are actually
1224 used. Record for later use during GC. */
1225 case R_PARISC_GNU_VTENTRY
:
1226 if (!_bfd_elf32_gc_record_vtentry (abfd
, sec
,
1227 &h
->elf
, rel
->r_addend
))
1235 /* Now carry out our orders. */
1236 if (need_entry
& NEED_GOT
)
1238 /* Allocate space for a GOT entry, as well as a dynamic
1239 relocation for this entry. */
1240 if (htab
->sgot
== NULL
)
1242 if (htab
->elf
.dynobj
== NULL
)
1243 htab
->elf
.dynobj
= abfd
;
1244 if (!elf32_hppa_create_dynamic_sections (htab
->elf
.dynobj
, info
))
1250 h
->elf
.got
.refcount
+= 1;
1254 bfd_signed_vma
*local_got_refcounts
;
1256 /* This is a global offset table entry for a local symbol. */
1257 local_got_refcounts
= elf_local_got_refcounts (abfd
);
1258 if (local_got_refcounts
== NULL
)
1262 /* Allocate space for local got offsets and local
1263 plt offsets. Done this way to save polluting
1264 elf_obj_tdata with another target specific
1266 size
= symtab_hdr
->sh_info
;
1267 size
*= 2 * sizeof (bfd_signed_vma
);
1268 local_got_refcounts
= bfd_zalloc (abfd
, size
);
1269 if (local_got_refcounts
== NULL
)
1271 elf_local_got_refcounts (abfd
) = local_got_refcounts
;
1273 local_got_refcounts
[r_symndx
] += 1;
1277 if (need_entry
& NEED_PLT
)
1279 /* If we are creating a shared library, and this is a reloc
1280 against a weak symbol or a global symbol in a dynamic
1281 object, then we will be creating an import stub and a
1282 .plt entry for the symbol. Similarly, on a normal link
1283 to symbols defined in a dynamic object we'll need the
1284 import stub and a .plt entry. We don't know yet whether
1285 the symbol is defined or not, so make an entry anyway and
1286 clean up later in adjust_dynamic_symbol. */
1287 if ((sec
->flags
& SEC_ALLOC
) != 0)
1291 h
->elf
.elf_link_hash_flags
|= ELF_LINK_HASH_NEEDS_PLT
;
1292 h
->elf
.plt
.refcount
+= 1;
1294 /* If this .plt entry is for a plabel, mark it so
1295 that adjust_dynamic_symbol will keep the entry
1296 even if it appears to be local. */
1297 if (need_entry
& PLT_PLABEL
)
1300 else if (need_entry
& PLT_PLABEL
)
1302 bfd_signed_vma
*local_got_refcounts
;
1303 bfd_signed_vma
*local_plt_refcounts
;
1305 local_got_refcounts
= elf_local_got_refcounts (abfd
);
1306 if (local_got_refcounts
== NULL
)
1310 /* Allocate space for local got offsets and local
1312 size
= symtab_hdr
->sh_info
;
1313 size
*= 2 * sizeof (bfd_signed_vma
);
1314 local_got_refcounts
= bfd_zalloc (abfd
, size
);
1315 if (local_got_refcounts
== NULL
)
1317 elf_local_got_refcounts (abfd
) = local_got_refcounts
;
1319 local_plt_refcounts
= (local_got_refcounts
1320 + symtab_hdr
->sh_info
);
1321 local_plt_refcounts
[r_symndx
] += 1;
1326 if (need_entry
& NEED_DYNREL
)
1328 /* Flag this symbol as having a non-got, non-plt reference
1329 so that we generate copy relocs if it turns out to be
1331 if (h
!= NULL
&& !info
->shared
)
1332 h
->elf
.elf_link_hash_flags
|= ELF_LINK_NON_GOT_REF
;
1334 /* If we are creating a shared library then we need to copy
1335 the reloc into the shared library. However, if we are
1336 linking with -Bsymbolic, we need only copy absolute
1337 relocs or relocs against symbols that are not defined in
1338 an object we are including in the link. PC- or DP- or
1339 DLT-relative relocs against any local sym or global sym
1340 with DEF_REGULAR set, can be discarded. At this point we
1341 have not seen all the input files, so it is possible that
1342 DEF_REGULAR is not set now but will be set later (it is
1343 never cleared). We account for that possibility below by
1344 storing information in the dyn_relocs field of the
1347 A similar situation to the -Bsymbolic case occurs when
1348 creating shared libraries and symbol visibility changes
1349 render the symbol local.
1351 As it turns out, all the relocs we will be creating here
1352 are absolute, so we cannot remove them on -Bsymbolic
1353 links or visibility changes anyway. A STUB_REL reloc
1354 is absolute too, as in that case it is the reloc in the
1355 stub we will be creating, rather than copying the PCREL
1356 reloc in the branch.
1358 If on the other hand, we are creating an executable, we
1359 may need to keep relocations for symbols satisfied by a
1360 dynamic library if we manage to avoid copy relocs for the
1363 && (sec
->flags
& SEC_ALLOC
) != 0
1364 && (IS_ABSOLUTE_RELOC (r_type
)
1367 || h
->elf
.root
.type
== bfd_link_hash_defweak
1368 || (h
->elf
.elf_link_hash_flags
1369 & ELF_LINK_HASH_DEF_REGULAR
) == 0))))
1371 && (sec
->flags
& SEC_ALLOC
) != 0
1373 && (h
->elf
.root
.type
== bfd_link_hash_defweak
1374 || (h
->elf
.elf_link_hash_flags
1375 & ELF_LINK_HASH_DEF_REGULAR
) == 0)))
1377 struct elf32_hppa_dyn_reloc_entry
*p
;
1378 struct elf32_hppa_dyn_reloc_entry
**head
;
1380 /* Create a reloc section in dynobj and make room for
1387 name
= (bfd_elf_string_from_elf_section
1389 elf_elfheader (abfd
)->e_shstrndx
,
1390 elf_section_data (sec
)->rel_hdr
.sh_name
));
1393 (*_bfd_error_handler
)
1394 (_("Could not find relocation section for %s"),
1396 bfd_set_error (bfd_error_bad_value
);
1400 if (htab
->elf
.dynobj
== NULL
)
1401 htab
->elf
.dynobj
= abfd
;
1403 dynobj
= htab
->elf
.dynobj
;
1404 sreloc
= bfd_get_section_by_name (dynobj
, name
);
1409 sreloc
= bfd_make_section (dynobj
, name
);
1410 flags
= (SEC_HAS_CONTENTS
| SEC_READONLY
1411 | SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
1412 if ((sec
->flags
& SEC_ALLOC
) != 0)
1413 flags
|= SEC_ALLOC
| SEC_LOAD
;
1415 || !bfd_set_section_flags (dynobj
, sreloc
, flags
)
1416 || !bfd_set_section_alignment (dynobj
, sreloc
, 2))
1420 elf_section_data (sec
)->sreloc
= sreloc
;
1423 /* If this is a global symbol, we count the number of
1424 relocations we need for this symbol. */
1427 head
= &h
->dyn_relocs
;
1431 /* Track dynamic relocs needed for local syms too.
1432 We really need local syms available to do this
1436 s
= bfd_section_from_r_symndx (abfd
, &htab
->sym_sec
,
1441 head
= ((struct elf32_hppa_dyn_reloc_entry
**)
1442 &elf_section_data (s
)->local_dynrel
);
1446 if (p
== NULL
|| p
->sec
!= sec
)
1448 p
= bfd_alloc (htab
->elf
.dynobj
, sizeof *p
);
1455 #if RELATIVE_DYNRELOCS
1456 p
->relative_count
= 0;
1461 #if RELATIVE_DYNRELOCS
1462 if (!IS_ABSOLUTE_RELOC (rtype
))
1463 p
->relative_count
+= 1;
1472 /* Return the section that should be marked against garbage collection
1473 for a given relocation. */
1476 elf32_hppa_gc_mark_hook (asection
*sec
,
1477 struct bfd_link_info
*info ATTRIBUTE_UNUSED
,
1478 Elf_Internal_Rela
*rel
,
1479 struct elf_link_hash_entry
*h
,
1480 Elf_Internal_Sym
*sym
)
1484 switch ((unsigned int) ELF32_R_TYPE (rel
->r_info
))
1486 case R_PARISC_GNU_VTINHERIT
:
1487 case R_PARISC_GNU_VTENTRY
:
1491 switch (h
->root
.type
)
1493 case bfd_link_hash_defined
:
1494 case bfd_link_hash_defweak
:
1495 return h
->root
.u
.def
.section
;
1497 case bfd_link_hash_common
:
1498 return h
->root
.u
.c
.p
->section
;
1506 return bfd_section_from_elf_index (sec
->owner
, sym
->st_shndx
);
1511 /* Update the got and plt entry reference counts for the section being
1515 elf32_hppa_gc_sweep_hook (bfd
*abfd
,
1516 struct bfd_link_info
*info ATTRIBUTE_UNUSED
,
1518 const Elf_Internal_Rela
*relocs
)
1520 Elf_Internal_Shdr
*symtab_hdr
;
1521 struct elf_link_hash_entry
**sym_hashes
;
1522 bfd_signed_vma
*local_got_refcounts
;
1523 bfd_signed_vma
*local_plt_refcounts
;
1524 const Elf_Internal_Rela
*rel
, *relend
;
1526 elf_section_data (sec
)->local_dynrel
= NULL
;
1528 symtab_hdr
= &elf_tdata (abfd
)->symtab_hdr
;
1529 sym_hashes
= elf_sym_hashes (abfd
);
1530 local_got_refcounts
= elf_local_got_refcounts (abfd
);
1531 local_plt_refcounts
= local_got_refcounts
;
1532 if (local_plt_refcounts
!= NULL
)
1533 local_plt_refcounts
+= symtab_hdr
->sh_info
;
1535 relend
= relocs
+ sec
->reloc_count
;
1536 for (rel
= relocs
; rel
< relend
; rel
++)
1538 unsigned long r_symndx
;
1539 unsigned int r_type
;
1540 struct elf_link_hash_entry
*h
= NULL
;
1542 r_symndx
= ELF32_R_SYM (rel
->r_info
);
1543 if (r_symndx
>= symtab_hdr
->sh_info
)
1545 struct elf32_hppa_link_hash_entry
*eh
;
1546 struct elf32_hppa_dyn_reloc_entry
**pp
;
1547 struct elf32_hppa_dyn_reloc_entry
*p
;
1549 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
1550 eh
= (struct elf32_hppa_link_hash_entry
*) h
;
1552 for (pp
= &eh
->dyn_relocs
; (p
= *pp
) != NULL
; pp
= &p
->next
)
1555 /* Everything must go for SEC. */
1561 r_type
= ELF32_R_TYPE (rel
->r_info
);
1564 case R_PARISC_DLTIND14F
:
1565 case R_PARISC_DLTIND14R
:
1566 case R_PARISC_DLTIND21L
:
1569 if (h
->got
.refcount
> 0)
1570 h
->got
.refcount
-= 1;
1572 else if (local_got_refcounts
!= NULL
)
1574 if (local_got_refcounts
[r_symndx
] > 0)
1575 local_got_refcounts
[r_symndx
] -= 1;
1579 case R_PARISC_PCREL12F
:
1580 case R_PARISC_PCREL17C
:
1581 case R_PARISC_PCREL17F
:
1582 case R_PARISC_PCREL22F
:
1585 if (h
->plt
.refcount
> 0)
1586 h
->plt
.refcount
-= 1;
1590 case R_PARISC_PLABEL14R
:
1591 case R_PARISC_PLABEL21L
:
1592 case R_PARISC_PLABEL32
:
1595 if (h
->plt
.refcount
> 0)
1596 h
->plt
.refcount
-= 1;
1598 else if (local_plt_refcounts
!= NULL
)
1600 if (local_plt_refcounts
[r_symndx
] > 0)
1601 local_plt_refcounts
[r_symndx
] -= 1;
1613 /* Our own version of hide_symbol, so that we can keep plt entries for
1617 elf32_hppa_hide_symbol (struct bfd_link_info
*info
,
1618 struct elf_link_hash_entry
*h
,
1619 bfd_boolean force_local
)
1623 h
->elf_link_hash_flags
|= ELF_LINK_FORCED_LOCAL
;
1624 if (h
->dynindx
!= -1)
1627 _bfd_elf_strtab_delref (elf_hash_table (info
)->dynstr
,
1632 if (! ((struct elf32_hppa_link_hash_entry
*) h
)->plabel
)
1634 h
->elf_link_hash_flags
&= ~ELF_LINK_HASH_NEEDS_PLT
;
1635 h
->plt
.offset
= (bfd_vma
) -1;
1639 /* This is the condition under which elf32_hppa_finish_dynamic_symbol
1640 will be called from elflink.h. If elflink.h doesn't call our
1641 finish_dynamic_symbol routine, we'll need to do something about
1642 initializing any .plt and .got entries in elf32_hppa_relocate_section. */
1643 #define WILL_CALL_FINISH_DYNAMIC_SYMBOL(DYN, INFO, H) \
1645 && ((INFO)->shared \
1646 || ((H)->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0) \
1647 && ((H)->dynindx != -1 \
1648 || ((H)->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) != 0))
1650 /* Adjust a symbol defined by a dynamic object and referenced by a
1651 regular object. The current definition is in some section of the
1652 dynamic object, but we're not including those sections. We have to
1653 change the definition to something the rest of the link can
1657 elf32_hppa_adjust_dynamic_symbol (struct bfd_link_info
*info
,
1658 struct elf_link_hash_entry
*h
)
1660 struct elf32_hppa_link_hash_table
*htab
;
1661 struct elf32_hppa_link_hash_entry
*eh
;
1662 struct elf32_hppa_dyn_reloc_entry
*p
;
1664 unsigned int power_of_two
;
1666 /* If this is a function, put it in the procedure linkage table. We
1667 will fill in the contents of the procedure linkage table later. */
1668 if (h
->type
== STT_FUNC
1669 || (h
->elf_link_hash_flags
& ELF_LINK_HASH_NEEDS_PLT
) != 0)
1671 if (h
->plt
.refcount
<= 0
1672 || ((h
->elf_link_hash_flags
& ELF_LINK_HASH_DEF_REGULAR
) != 0
1673 && h
->root
.type
!= bfd_link_hash_defweak
1674 && ! ((struct elf32_hppa_link_hash_entry
*) h
)->plabel
1675 && (!info
->shared
|| info
->symbolic
)))
1677 /* The .plt entry is not needed when:
1678 a) Garbage collection has removed all references to the
1680 b) We know for certain the symbol is defined in this
1681 object, and it's not a weak definition, nor is the symbol
1682 used by a plabel relocation. Either this object is the
1683 application or we are doing a shared symbolic link. */
1685 /* As a special sop to the hppa ABI, we keep a .plt entry
1686 for functions in sections containing PIC code. */
1688 && h
->plt
.refcount
> 0
1689 && (h
->elf_link_hash_flags
& ELF_LINK_HASH_DEF_REGULAR
) != 0
1690 && (h
->root
.u
.def
.section
->flags
& SEC_HAS_GOT_REF
) != 0)
1691 ((struct elf32_hppa_link_hash_entry
*) h
)->pic_call
= 1;
1694 h
->plt
.offset
= (bfd_vma
) -1;
1695 h
->elf_link_hash_flags
&= ~ELF_LINK_HASH_NEEDS_PLT
;
1702 h
->plt
.offset
= (bfd_vma
) -1;
1704 /* If this is a weak symbol, and there is a real definition, the
1705 processor independent code will have arranged for us to see the
1706 real definition first, and we can just use the same value. */
1707 if (h
->weakdef
!= NULL
)
1709 if (h
->weakdef
->root
.type
!= bfd_link_hash_defined
1710 && h
->weakdef
->root
.type
!= bfd_link_hash_defweak
)
1712 h
->root
.u
.def
.section
= h
->weakdef
->root
.u
.def
.section
;
1713 h
->root
.u
.def
.value
= h
->weakdef
->root
.u
.def
.value
;
1717 /* This is a reference to a symbol defined by a dynamic object which
1718 is not a function. */
1720 /* If we are creating a shared library, we must presume that the
1721 only references to the symbol are via the global offset table.
1722 For such cases we need not do anything here; the relocations will
1723 be handled correctly by relocate_section. */
1727 /* If there are no references to this symbol that do not use the
1728 GOT, we don't need to generate a copy reloc. */
1729 if ((h
->elf_link_hash_flags
& ELF_LINK_NON_GOT_REF
) == 0)
1732 eh
= (struct elf32_hppa_link_hash_entry
*) h
;
1733 for (p
= eh
->dyn_relocs
; p
!= NULL
; p
= p
->next
)
1735 s
= p
->sec
->output_section
;
1736 if (s
!= NULL
&& (s
->flags
& SEC_READONLY
) != 0)
1740 /* If we didn't find any dynamic relocs in read-only sections, then
1741 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
1744 h
->elf_link_hash_flags
&= ~ELF_LINK_NON_GOT_REF
;
1748 /* We must allocate the symbol in our .dynbss section, which will
1749 become part of the .bss section of the executable. There will be
1750 an entry for this symbol in the .dynsym section. The dynamic
1751 object will contain position independent code, so all references
1752 from the dynamic object to this symbol will go through the global
1753 offset table. The dynamic linker will use the .dynsym entry to
1754 determine the address it must put in the global offset table, so
1755 both the dynamic object and the regular object will refer to the
1756 same memory location for the variable. */
1758 htab
= hppa_link_hash_table (info
);
1760 /* We must generate a COPY reloc to tell the dynamic linker to
1761 copy the initial value out of the dynamic object and into the
1762 runtime process image. */
1763 if ((h
->root
.u
.def
.section
->flags
& SEC_ALLOC
) != 0)
1765 htab
->srelbss
->_raw_size
+= sizeof (Elf32_External_Rela
);
1766 h
->elf_link_hash_flags
|= ELF_LINK_HASH_NEEDS_COPY
;
1769 /* We need to figure out the alignment required for this symbol. I
1770 have no idea how other ELF linkers handle this. */
1772 power_of_two
= bfd_log2 (h
->size
);
1773 if (power_of_two
> 3)
1776 /* Apply the required alignment. */
1778 s
->_raw_size
= BFD_ALIGN (s
->_raw_size
,
1779 (bfd_size_type
) (1 << power_of_two
));
1780 if (power_of_two
> bfd_get_section_alignment (htab
->elf
.dynobj
, s
))
1782 if (! bfd_set_section_alignment (htab
->elf
.dynobj
, s
, power_of_two
))
1786 /* Define the symbol as being at this point in the section. */
1787 h
->root
.u
.def
.section
= s
;
1788 h
->root
.u
.def
.value
= s
->_raw_size
;
1790 /* Increment the section size to make room for the symbol. */
1791 s
->_raw_size
+= h
->size
;
1796 /* Called via elf_link_hash_traverse to create .plt entries for an
1797 application that uses statically linked PIC functions. Similar to
1798 the first part of elf32_hppa_adjust_dynamic_symbol. */
1801 mark_PIC_calls (struct elf_link_hash_entry
*h
, void *inf ATTRIBUTE_UNUSED
)
1803 if (h
->root
.type
== bfd_link_hash_warning
)
1804 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
1806 if (! (h
->plt
.refcount
> 0
1807 && (h
->root
.type
== bfd_link_hash_defined
1808 || h
->root
.type
== bfd_link_hash_defweak
)
1809 && (h
->root
.u
.def
.section
->flags
& SEC_HAS_GOT_REF
) != 0))
1811 h
->plt
.offset
= (bfd_vma
) -1;
1812 h
->elf_link_hash_flags
&= ~ELF_LINK_HASH_NEEDS_PLT
;
1816 h
->elf_link_hash_flags
|= ELF_LINK_HASH_NEEDS_PLT
;
1817 ((struct elf32_hppa_link_hash_entry
*) h
)->pic_call
= 1;
1822 /* Allocate space in the .plt for entries that won't have relocations.
1823 ie. pic_call and plabel entries. */
1826 allocate_plt_static (struct elf_link_hash_entry
*h
, void *inf
)
1828 struct bfd_link_info
*info
;
1829 struct elf32_hppa_link_hash_table
*htab
;
1832 if (h
->root
.type
== bfd_link_hash_indirect
)
1835 if (h
->root
.type
== bfd_link_hash_warning
)
1836 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
1839 htab
= hppa_link_hash_table (info
);
1840 if (((struct elf32_hppa_link_hash_entry
*) h
)->pic_call
)
1842 /* Make an entry in the .plt section for non-pic code that is
1843 calling pic code. */
1844 ((struct elf32_hppa_link_hash_entry
*) h
)->plabel
= 0;
1846 h
->plt
.offset
= s
->_raw_size
;
1847 s
->_raw_size
+= PLT_ENTRY_SIZE
;
1849 else if (htab
->elf
.dynamic_sections_created
1850 && h
->plt
.refcount
> 0)
1852 /* Make sure this symbol is output as a dynamic symbol.
1853 Undefined weak syms won't yet be marked as dynamic. */
1854 if (h
->dynindx
== -1
1855 && (h
->elf_link_hash_flags
& ELF_LINK_FORCED_LOCAL
) == 0
1856 && h
->type
!= STT_PARISC_MILLI
)
1858 if (! bfd_elf32_link_record_dynamic_symbol (info
, h
))
1862 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, info
, h
))
1864 /* Allocate these later. From this point on, h->plabel
1865 means that the plt entry is only used by a plabel.
1866 We'll be using a normal plt entry for this symbol, so
1867 clear the plabel indicator. */
1868 ((struct elf32_hppa_link_hash_entry
*) h
)->plabel
= 0;
1870 else if (((struct elf32_hppa_link_hash_entry
*) h
)->plabel
)
1872 /* Make an entry in the .plt section for plabel references
1873 that won't have a .plt entry for other reasons. */
1875 h
->plt
.offset
= s
->_raw_size
;
1876 s
->_raw_size
+= PLT_ENTRY_SIZE
;
1880 /* No .plt entry needed. */
1881 h
->plt
.offset
= (bfd_vma
) -1;
1882 h
->elf_link_hash_flags
&= ~ELF_LINK_HASH_NEEDS_PLT
;
1887 h
->plt
.offset
= (bfd_vma
) -1;
1888 h
->elf_link_hash_flags
&= ~ELF_LINK_HASH_NEEDS_PLT
;
1894 /* Allocate space in .plt, .got and associated reloc sections for
1898 allocate_dynrelocs (struct elf_link_hash_entry
*h
, void *inf
)
1900 struct bfd_link_info
*info
;
1901 struct elf32_hppa_link_hash_table
*htab
;
1903 struct elf32_hppa_link_hash_entry
*eh
;
1904 struct elf32_hppa_dyn_reloc_entry
*p
;
1906 if (h
->root
.type
== bfd_link_hash_indirect
)
1909 if (h
->root
.type
== bfd_link_hash_warning
)
1910 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
1913 htab
= hppa_link_hash_table (info
);
1914 if (htab
->elf
.dynamic_sections_created
1915 && h
->plt
.offset
!= (bfd_vma
) -1
1916 && !((struct elf32_hppa_link_hash_entry
*) h
)->pic_call
1917 && !((struct elf32_hppa_link_hash_entry
*) h
)->plabel
)
1919 /* Make an entry in the .plt section. */
1921 h
->plt
.offset
= s
->_raw_size
;
1922 s
->_raw_size
+= PLT_ENTRY_SIZE
;
1924 /* We also need to make an entry in the .rela.plt section. */
1925 htab
->srelplt
->_raw_size
+= sizeof (Elf32_External_Rela
);
1926 htab
->need_plt_stub
= 1;
1929 if (h
->got
.refcount
> 0)
1931 /* Make sure this symbol is output as a dynamic symbol.
1932 Undefined weak syms won't yet be marked as dynamic. */
1933 if (h
->dynindx
== -1
1934 && (h
->elf_link_hash_flags
& ELF_LINK_FORCED_LOCAL
) == 0
1935 && h
->type
!= STT_PARISC_MILLI
)
1937 if (! bfd_elf32_link_record_dynamic_symbol (info
, h
))
1942 h
->got
.offset
= s
->_raw_size
;
1943 s
->_raw_size
+= GOT_ENTRY_SIZE
;
1944 if (htab
->elf
.dynamic_sections_created
1946 || (h
->dynindx
!= -1
1947 && h
->elf_link_hash_flags
& ELF_LINK_FORCED_LOCAL
) == 0))
1949 htab
->srelgot
->_raw_size
+= sizeof (Elf32_External_Rela
);
1953 h
->got
.offset
= (bfd_vma
) -1;
1955 eh
= (struct elf32_hppa_link_hash_entry
*) h
;
1956 if (eh
->dyn_relocs
== NULL
)
1959 /* If this is a -Bsymbolic shared link, then we need to discard all
1960 space allocated for dynamic pc-relative relocs against symbols
1961 defined in a regular object. For the normal shared case, discard
1962 space for relocs that have become local due to symbol visibility
1966 #if RELATIVE_DYNRELOCS
1967 if ((h
->elf_link_hash_flags
& ELF_LINK_HASH_DEF_REGULAR
) != 0
1968 && ((h
->elf_link_hash_flags
& ELF_LINK_FORCED_LOCAL
) != 0
1971 struct elf32_hppa_dyn_reloc_entry
**pp
;
1973 for (pp
= &eh
->dyn_relocs
; (p
= *pp
) != NULL
; )
1975 p
->count
-= p
->relative_count
;
1976 p
->relative_count
= 0;
1987 /* For the non-shared case, discard space for relocs against
1988 symbols which turn out to need copy relocs or are not
1990 if ((h
->elf_link_hash_flags
& ELF_LINK_NON_GOT_REF
) == 0
1991 && (((h
->elf_link_hash_flags
& ELF_LINK_HASH_DEF_DYNAMIC
) != 0
1992 && (h
->elf_link_hash_flags
& ELF_LINK_HASH_DEF_REGULAR
) == 0)
1993 || (htab
->elf
.dynamic_sections_created
1994 && (h
->root
.type
== bfd_link_hash_undefweak
1995 || h
->root
.type
== bfd_link_hash_undefined
))))
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
)
2003 if (! bfd_elf32_link_record_dynamic_symbol (info
, h
))
2007 /* If that succeeded, we know we'll be keeping all the
2009 if (h
->dynindx
!= -1)
2013 eh
->dyn_relocs
= NULL
;
2019 /* Finally, allocate space. */
2020 for (p
= eh
->dyn_relocs
; p
!= NULL
; p
= p
->next
)
2022 asection
*sreloc
= elf_section_data (p
->sec
)->sreloc
;
2023 sreloc
->_raw_size
+= p
->count
* sizeof (Elf32_External_Rela
);
2029 /* This function is called via elf_link_hash_traverse to force
2030 millicode symbols local so they do not end up as globals in the
2031 dynamic symbol table. We ought to be able to do this in
2032 adjust_dynamic_symbol, but our adjust_dynamic_symbol is not called
2033 for all dynamic symbols. Arguably, this is a bug in
2034 elf_adjust_dynamic_symbol. */
2037 clobber_millicode_symbols (struct elf_link_hash_entry
*h
,
2038 struct bfd_link_info
*info
)
2040 if (h
->root
.type
== bfd_link_hash_warning
)
2041 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
2043 if (h
->type
== STT_PARISC_MILLI
2044 && (h
->elf_link_hash_flags
& ELF_LINK_FORCED_LOCAL
) == 0)
2046 elf32_hppa_hide_symbol (info
, h
, TRUE
);
2051 /* Find any dynamic relocs that apply to read-only sections. */
2054 readonly_dynrelocs (struct elf_link_hash_entry
*h
, void *inf
)
2056 struct elf32_hppa_link_hash_entry
*eh
;
2057 struct elf32_hppa_dyn_reloc_entry
*p
;
2059 if (h
->root
.type
== bfd_link_hash_warning
)
2060 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
2062 eh
= (struct elf32_hppa_link_hash_entry
*) h
;
2063 for (p
= eh
->dyn_relocs
; p
!= NULL
; p
= p
->next
)
2065 asection
*s
= p
->sec
->output_section
;
2067 if (s
!= NULL
&& (s
->flags
& SEC_READONLY
) != 0)
2069 struct bfd_link_info
*info
= inf
;
2071 info
->flags
|= DF_TEXTREL
;
2073 /* Not an error, just cut short the traversal. */
2080 /* Set the sizes of the dynamic sections. */
2083 elf32_hppa_size_dynamic_sections (bfd
*output_bfd ATTRIBUTE_UNUSED
,
2084 struct bfd_link_info
*info
)
2086 struct elf32_hppa_link_hash_table
*htab
;
2092 htab
= hppa_link_hash_table (info
);
2093 dynobj
= htab
->elf
.dynobj
;
2097 if (htab
->elf
.dynamic_sections_created
)
2099 /* Set the contents of the .interp section to the interpreter. */
2102 s
= bfd_get_section_by_name (dynobj
, ".interp");
2105 s
->_raw_size
= sizeof ELF_DYNAMIC_INTERPRETER
;
2106 s
->contents
= (unsigned char *) ELF_DYNAMIC_INTERPRETER
;
2109 /* Force millicode symbols local. */
2110 elf_link_hash_traverse (&htab
->elf
,
2111 clobber_millicode_symbols
,
2116 /* Run through the function symbols, looking for any that are
2117 PIC, and mark them as needing .plt entries so that %r19 will
2120 elf_link_hash_traverse (&htab
->elf
, mark_PIC_calls
, info
);
2123 /* Set up .got and .plt offsets for local syms, and space for local
2125 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link_next
)
2127 bfd_signed_vma
*local_got
;
2128 bfd_signed_vma
*end_local_got
;
2129 bfd_signed_vma
*local_plt
;
2130 bfd_signed_vma
*end_local_plt
;
2131 bfd_size_type locsymcount
;
2132 Elf_Internal_Shdr
*symtab_hdr
;
2135 if (bfd_get_flavour (ibfd
) != bfd_target_elf_flavour
)
2138 for (s
= ibfd
->sections
; s
!= NULL
; s
= s
->next
)
2140 struct elf32_hppa_dyn_reloc_entry
*p
;
2142 for (p
= ((struct elf32_hppa_dyn_reloc_entry
*)
2143 elf_section_data (s
)->local_dynrel
);
2147 if (!bfd_is_abs_section (p
->sec
)
2148 && bfd_is_abs_section (p
->sec
->output_section
))
2150 /* Input section has been discarded, either because
2151 it is a copy of a linkonce section or due to
2152 linker script /DISCARD/, so we'll be discarding
2155 else if (p
->count
!= 0)
2157 srel
= elf_section_data (p
->sec
)->sreloc
;
2158 srel
->_raw_size
+= p
->count
* sizeof (Elf32_External_Rela
);
2159 if ((p
->sec
->output_section
->flags
& SEC_READONLY
) != 0)
2160 info
->flags
|= DF_TEXTREL
;
2165 local_got
= elf_local_got_refcounts (ibfd
);
2169 symtab_hdr
= &elf_tdata (ibfd
)->symtab_hdr
;
2170 locsymcount
= symtab_hdr
->sh_info
;
2171 end_local_got
= local_got
+ locsymcount
;
2173 srel
= htab
->srelgot
;
2174 for (; local_got
< end_local_got
; ++local_got
)
2178 *local_got
= s
->_raw_size
;
2179 s
->_raw_size
+= GOT_ENTRY_SIZE
;
2181 srel
->_raw_size
+= sizeof (Elf32_External_Rela
);
2184 *local_got
= (bfd_vma
) -1;
2187 local_plt
= end_local_got
;
2188 end_local_plt
= local_plt
+ locsymcount
;
2189 if (! htab
->elf
.dynamic_sections_created
)
2191 /* Won't be used, but be safe. */
2192 for (; local_plt
< end_local_plt
; ++local_plt
)
2193 *local_plt
= (bfd_vma
) -1;
2198 srel
= htab
->srelplt
;
2199 for (; local_plt
< end_local_plt
; ++local_plt
)
2203 *local_plt
= s
->_raw_size
;
2204 s
->_raw_size
+= PLT_ENTRY_SIZE
;
2206 srel
->_raw_size
+= sizeof (Elf32_External_Rela
);
2209 *local_plt
= (bfd_vma
) -1;
2214 /* Do all the .plt entries without relocs first. The dynamic linker
2215 uses the last .plt reloc to find the end of the .plt (and hence
2216 the start of the .got) for lazy linking. */
2217 elf_link_hash_traverse (&htab
->elf
, allocate_plt_static
, info
);
2219 /* Allocate global sym .plt and .got entries, and space for global
2220 sym dynamic relocs. */
2221 elf_link_hash_traverse (&htab
->elf
, allocate_dynrelocs
, info
);
2223 /* The check_relocs and adjust_dynamic_symbol entry points have
2224 determined the sizes of the various dynamic sections. Allocate
2227 for (s
= dynobj
->sections
; s
!= NULL
; s
= s
->next
)
2229 if ((s
->flags
& SEC_LINKER_CREATED
) == 0)
2232 if (s
== htab
->splt
)
2234 if (htab
->need_plt_stub
)
2236 /* Make space for the plt stub at the end of the .plt
2237 section. We want this stub right at the end, up
2238 against the .got section. */
2239 int gotalign
= bfd_section_alignment (dynobj
, htab
->sgot
);
2240 int pltalign
= bfd_section_alignment (dynobj
, s
);
2243 if (gotalign
> pltalign
)
2244 bfd_set_section_alignment (dynobj
, s
, gotalign
);
2245 mask
= ((bfd_size_type
) 1 << gotalign
) - 1;
2246 s
->_raw_size
= (s
->_raw_size
+ sizeof (plt_stub
) + mask
) & ~mask
;
2249 else if (s
== htab
->sgot
)
2251 else if (strncmp (bfd_get_section_name (dynobj
, s
), ".rela", 5) == 0)
2253 if (s
->_raw_size
!= 0)
2255 /* Remember whether there are any reloc sections other
2257 if (s
!= htab
->srelplt
)
2260 /* We use the reloc_count field as a counter if we need
2261 to copy relocs into the output file. */
2267 /* It's not one of our sections, so don't allocate space. */
2271 if (s
->_raw_size
== 0)
2273 /* If we don't need this section, strip it from the
2274 output file. This is mostly to handle .rela.bss and
2275 .rela.plt. We must create both sections in
2276 create_dynamic_sections, because they must be created
2277 before the linker maps input sections to output
2278 sections. The linker does that before
2279 adjust_dynamic_symbol is called, and it is that
2280 function which decides whether anything needs to go
2281 into these sections. */
2282 _bfd_strip_section_from_output (info
, s
);
2286 /* Allocate memory for the section contents. Zero it, because
2287 we may not fill in all the reloc sections. */
2288 s
->contents
= bfd_zalloc (dynobj
, s
->_raw_size
);
2289 if (s
->contents
== NULL
&& s
->_raw_size
!= 0)
2293 if (htab
->elf
.dynamic_sections_created
)
2295 /* Like IA-64 and HPPA64, always create a DT_PLTGOT. It
2296 actually has nothing to do with the PLT, it is how we
2297 communicate the LTP value of a load module to the dynamic
2299 #define add_dynamic_entry(TAG, VAL) \
2300 bfd_elf32_add_dynamic_entry (info, (bfd_vma) (TAG), (bfd_vma) (VAL))
2302 if (!add_dynamic_entry (DT_PLTGOT
, 0))
2305 /* Add some entries to the .dynamic section. We fill in the
2306 values later, in elf32_hppa_finish_dynamic_sections, but we
2307 must add the entries now so that we get the correct size for
2308 the .dynamic section. The DT_DEBUG entry is filled in by the
2309 dynamic linker and used by the debugger. */
2312 if (!add_dynamic_entry (DT_DEBUG
, 0))
2316 if (htab
->srelplt
->_raw_size
!= 0)
2318 if (!add_dynamic_entry (DT_PLTRELSZ
, 0)
2319 || !add_dynamic_entry (DT_PLTREL
, DT_RELA
)
2320 || !add_dynamic_entry (DT_JMPREL
, 0))
2326 if (!add_dynamic_entry (DT_RELA
, 0)
2327 || !add_dynamic_entry (DT_RELASZ
, 0)
2328 || !add_dynamic_entry (DT_RELAENT
, sizeof (Elf32_External_Rela
)))
2331 /* If any dynamic relocs apply to a read-only section,
2332 then we need a DT_TEXTREL entry. */
2333 if ((info
->flags
& DF_TEXTREL
) == 0)
2334 elf_link_hash_traverse (&htab
->elf
, readonly_dynrelocs
, info
);
2336 if ((info
->flags
& DF_TEXTREL
) != 0)
2338 if (!add_dynamic_entry (DT_TEXTREL
, 0))
2343 #undef add_dynamic_entry
2348 /* External entry points for sizing and building linker stubs. */
2350 /* Set up various things so that we can make a list of input sections
2351 for each output section included in the link. Returns -1 on error,
2352 0 when no stubs will be needed, and 1 on success. */
2355 elf32_hppa_setup_section_lists (bfd
*output_bfd
, struct bfd_link_info
*info
)
2358 unsigned int bfd_count
;
2359 int top_id
, top_index
;
2361 asection
**input_list
, **list
;
2363 struct elf32_hppa_link_hash_table
*htab
= hppa_link_hash_table (info
);
2365 if (htab
->elf
.root
.creator
->flavour
!= bfd_target_elf_flavour
)
2368 /* Count the number of input BFDs and find the top input section id. */
2369 for (input_bfd
= info
->input_bfds
, bfd_count
= 0, top_id
= 0;
2371 input_bfd
= input_bfd
->link_next
)
2374 for (section
= input_bfd
->sections
;
2376 section
= section
->next
)
2378 if (top_id
< section
->id
)
2379 top_id
= section
->id
;
2382 htab
->bfd_count
= bfd_count
;
2384 amt
= sizeof (struct map_stub
) * (top_id
+ 1);
2385 htab
->stub_group
= bfd_zmalloc (amt
);
2386 if (htab
->stub_group
== NULL
)
2389 /* We can't use output_bfd->section_count here to find the top output
2390 section index as some sections may have been removed, and
2391 _bfd_strip_section_from_output doesn't renumber the indices. */
2392 for (section
= output_bfd
->sections
, top_index
= 0;
2394 section
= section
->next
)
2396 if (top_index
< section
->index
)
2397 top_index
= section
->index
;
2400 htab
->top_index
= top_index
;
2401 amt
= sizeof (asection
*) * (top_index
+ 1);
2402 input_list
= bfd_malloc (amt
);
2403 htab
->input_list
= input_list
;
2404 if (input_list
== NULL
)
2407 /* For sections we aren't interested in, mark their entries with a
2408 value we can check later. */
2409 list
= input_list
+ top_index
;
2411 *list
= bfd_abs_section_ptr
;
2412 while (list
-- != input_list
);
2414 for (section
= output_bfd
->sections
;
2416 section
= section
->next
)
2418 if ((section
->flags
& SEC_CODE
) != 0)
2419 input_list
[section
->index
] = NULL
;
2425 /* The linker repeatedly calls this function for each input section,
2426 in the order that input sections are linked into output sections.
2427 Build lists of input sections to determine groupings between which
2428 we may insert linker stubs. */
2431 elf32_hppa_next_input_section (struct bfd_link_info
*info
, asection
*isec
)
2433 struct elf32_hppa_link_hash_table
*htab
= hppa_link_hash_table (info
);
2435 if (isec
->output_section
->index
<= htab
->top_index
)
2437 asection
**list
= htab
->input_list
+ isec
->output_section
->index
;
2438 if (*list
!= bfd_abs_section_ptr
)
2440 /* Steal the link_sec pointer for our list. */
2441 #define PREV_SEC(sec) (htab->stub_group[(sec)->id].link_sec)
2442 /* This happens to make the list in reverse order,
2443 which is what we want. */
2444 PREV_SEC (isec
) = *list
;
2450 /* See whether we can group stub sections together. Grouping stub
2451 sections may result in fewer stubs. More importantly, we need to
2452 put all .init* and .fini* stubs at the beginning of the .init or
2453 .fini output sections respectively, because glibc splits the
2454 _init and _fini functions into multiple parts. Putting a stub in
2455 the middle of a function is not a good idea. */
2458 group_sections (struct elf32_hppa_link_hash_table
*htab
,
2459 bfd_size_type stub_group_size
,
2460 bfd_boolean stubs_always_before_branch
)
2462 asection
**list
= htab
->input_list
+ htab
->top_index
;
2465 asection
*tail
= *list
;
2466 if (tail
== bfd_abs_section_ptr
)
2468 while (tail
!= NULL
)
2472 bfd_size_type total
;
2473 bfd_boolean big_sec
;
2476 if (tail
->_cooked_size
)
2477 total
= tail
->_cooked_size
;
2479 total
= tail
->_raw_size
;
2480 big_sec
= total
>= stub_group_size
;
2482 while ((prev
= PREV_SEC (curr
)) != NULL
2483 && ((total
+= curr
->output_offset
- prev
->output_offset
)
2487 /* OK, the size from the start of CURR to the end is less
2488 than 240000 bytes and thus can be handled by one stub
2489 section. (or the tail section is itself larger than
2490 240000 bytes, in which case we may be toast.)
2491 We should really be keeping track of the total size of
2492 stubs added here, as stubs contribute to the final output
2493 section size. That's a little tricky, and this way will
2494 only break if stubs added total more than 22144 bytes, or
2495 2768 long branch stubs. It seems unlikely for more than
2496 2768 different functions to be called, especially from
2497 code only 240000 bytes long. This limit used to be
2498 250000, but c++ code tends to generate lots of little
2499 functions, and sometimes violated the assumption. */
2502 prev
= PREV_SEC (tail
);
2503 /* Set up this stub group. */
2504 htab
->stub_group
[tail
->id
].link_sec
= curr
;
2506 while (tail
!= curr
&& (tail
= prev
) != NULL
);
2508 /* But wait, there's more! Input sections up to 240000
2509 bytes before the stub section can be handled by it too.
2510 Don't do this if we have a really large section after the
2511 stubs, as adding more stubs increases the chance that
2512 branches may not reach into the stub section. */
2513 if (!stubs_always_before_branch
&& !big_sec
)
2517 && ((total
+= tail
->output_offset
- prev
->output_offset
)
2521 prev
= PREV_SEC (tail
);
2522 htab
->stub_group
[tail
->id
].link_sec
= curr
;
2528 while (list
-- != htab
->input_list
);
2529 free (htab
->input_list
);
2533 /* Read in all local syms for all input bfds, and create hash entries
2534 for export stubs if we are building a multi-subspace shared lib.
2535 Returns -1 on error, 1 if export stubs created, 0 otherwise. */
2538 get_local_syms (bfd
*output_bfd
, bfd
*input_bfd
, struct bfd_link_info
*info
)
2540 unsigned int bfd_indx
;
2541 Elf_Internal_Sym
*local_syms
, **all_local_syms
;
2542 int stub_changed
= 0;
2543 struct elf32_hppa_link_hash_table
*htab
= hppa_link_hash_table (info
);
2545 /* We want to read in symbol extension records only once. To do this
2546 we need to read in the local symbols in parallel and save them for
2547 later use; so hold pointers to the local symbols in an array. */
2548 bfd_size_type amt
= sizeof (Elf_Internal_Sym
*) * htab
->bfd_count
;
2549 all_local_syms
= bfd_zmalloc (amt
);
2550 htab
->all_local_syms
= all_local_syms
;
2551 if (all_local_syms
== NULL
)
2554 /* Walk over all the input BFDs, swapping in local symbols.
2555 If we are creating a shared library, create hash entries for the
2559 input_bfd
= input_bfd
->link_next
, bfd_indx
++)
2561 Elf_Internal_Shdr
*symtab_hdr
;
2563 /* We'll need the symbol table in a second. */
2564 symtab_hdr
= &elf_tdata (input_bfd
)->symtab_hdr
;
2565 if (symtab_hdr
->sh_info
== 0)
2568 /* We need an array of the local symbols attached to the input bfd. */
2569 local_syms
= (Elf_Internal_Sym
*) symtab_hdr
->contents
;
2570 if (local_syms
== NULL
)
2572 local_syms
= bfd_elf_get_elf_syms (input_bfd
, symtab_hdr
,
2573 symtab_hdr
->sh_info
, 0,
2575 /* Cache them for elf_link_input_bfd. */
2576 symtab_hdr
->contents
= (unsigned char *) local_syms
;
2578 if (local_syms
== NULL
)
2581 all_local_syms
[bfd_indx
] = local_syms
;
2583 if (info
->shared
&& htab
->multi_subspace
)
2585 struct elf_link_hash_entry
**sym_hashes
;
2586 struct elf_link_hash_entry
**end_hashes
;
2587 unsigned int symcount
;
2589 symcount
= (symtab_hdr
->sh_size
/ sizeof (Elf32_External_Sym
)
2590 - symtab_hdr
->sh_info
);
2591 sym_hashes
= elf_sym_hashes (input_bfd
);
2592 end_hashes
= sym_hashes
+ symcount
;
2594 /* Look through the global syms for functions; We need to
2595 build export stubs for all globally visible functions. */
2596 for (; sym_hashes
< end_hashes
; sym_hashes
++)
2598 struct elf32_hppa_link_hash_entry
*hash
;
2600 hash
= (struct elf32_hppa_link_hash_entry
*) *sym_hashes
;
2602 while (hash
->elf
.root
.type
== bfd_link_hash_indirect
2603 || hash
->elf
.root
.type
== bfd_link_hash_warning
)
2604 hash
= ((struct elf32_hppa_link_hash_entry
*)
2605 hash
->elf
.root
.u
.i
.link
);
2607 /* At this point in the link, undefined syms have been
2608 resolved, so we need to check that the symbol was
2609 defined in this BFD. */
2610 if ((hash
->elf
.root
.type
== bfd_link_hash_defined
2611 || hash
->elf
.root
.type
== bfd_link_hash_defweak
)
2612 && hash
->elf
.type
== STT_FUNC
2613 && hash
->elf
.root
.u
.def
.section
->output_section
!= NULL
2614 && (hash
->elf
.root
.u
.def
.section
->output_section
->owner
2616 && hash
->elf
.root
.u
.def
.section
->owner
== input_bfd
2617 && (hash
->elf
.elf_link_hash_flags
& ELF_LINK_HASH_DEF_REGULAR
)
2618 && !(hash
->elf
.elf_link_hash_flags
& ELF_LINK_FORCED_LOCAL
)
2619 && ELF_ST_VISIBILITY (hash
->elf
.other
) == STV_DEFAULT
)
2622 const char *stub_name
;
2623 struct elf32_hppa_stub_hash_entry
*stub_entry
;
2625 sec
= hash
->elf
.root
.u
.def
.section
;
2626 stub_name
= hash
->elf
.root
.root
.string
;
2627 stub_entry
= hppa_stub_hash_lookup (&htab
->stub_hash_table
,
2630 if (stub_entry
== NULL
)
2632 stub_entry
= hppa_add_stub (stub_name
, sec
, htab
);
2636 stub_entry
->target_value
= hash
->elf
.root
.u
.def
.value
;
2637 stub_entry
->target_section
= hash
->elf
.root
.u
.def
.section
;
2638 stub_entry
->stub_type
= hppa_stub_export
;
2639 stub_entry
->h
= hash
;
2644 (*_bfd_error_handler
) (_("%s: duplicate export stub %s"),
2645 bfd_archive_filename (input_bfd
),
2653 return stub_changed
;
2656 /* Determine and set the size of the stub section for a final link.
2658 The basic idea here is to examine all the relocations looking for
2659 PC-relative calls to a target that is unreachable with a "bl"
2663 elf32_hppa_size_stubs
2664 (bfd
*output_bfd
, bfd
*stub_bfd
, struct bfd_link_info
*info
,
2665 bfd_boolean multi_subspace
, bfd_signed_vma group_size
,
2666 asection
* (*add_stub_section
) (const char *, asection
*),
2667 void (*layout_sections_again
) (void))
2669 bfd_size_type stub_group_size
;
2670 bfd_boolean stubs_always_before_branch
;
2671 bfd_boolean stub_changed
;
2672 struct elf32_hppa_link_hash_table
*htab
= hppa_link_hash_table (info
);
2674 /* Stash our params away. */
2675 htab
->stub_bfd
= stub_bfd
;
2676 htab
->multi_subspace
= multi_subspace
;
2677 htab
->add_stub_section
= add_stub_section
;
2678 htab
->layout_sections_again
= layout_sections_again
;
2679 stubs_always_before_branch
= group_size
< 0;
2681 stub_group_size
= -group_size
;
2683 stub_group_size
= group_size
;
2684 if (stub_group_size
== 1)
2686 /* Default values. */
2687 if (stubs_always_before_branch
)
2689 stub_group_size
= 7680000;
2690 if (htab
->has_17bit_branch
|| htab
->multi_subspace
)
2691 stub_group_size
= 240000;
2692 if (htab
->has_12bit_branch
)
2693 stub_group_size
= 7500;
2697 stub_group_size
= 6971392;
2698 if (htab
->has_17bit_branch
|| htab
->multi_subspace
)
2699 stub_group_size
= 217856;
2700 if (htab
->has_12bit_branch
)
2701 stub_group_size
= 6808;
2705 group_sections (htab
, stub_group_size
, stubs_always_before_branch
);
2707 switch (get_local_syms (output_bfd
, info
->input_bfds
, info
))
2710 if (htab
->all_local_syms
)
2711 goto error_ret_free_local
;
2715 stub_changed
= FALSE
;
2719 stub_changed
= TRUE
;
2726 unsigned int bfd_indx
;
2729 for (input_bfd
= info
->input_bfds
, bfd_indx
= 0;
2731 input_bfd
= input_bfd
->link_next
, bfd_indx
++)
2733 Elf_Internal_Shdr
*symtab_hdr
;
2735 Elf_Internal_Sym
*local_syms
;
2737 /* We'll need the symbol table in a second. */
2738 symtab_hdr
= &elf_tdata (input_bfd
)->symtab_hdr
;
2739 if (symtab_hdr
->sh_info
== 0)
2742 local_syms
= htab
->all_local_syms
[bfd_indx
];
2744 /* Walk over each section attached to the input bfd. */
2745 for (section
= input_bfd
->sections
;
2747 section
= section
->next
)
2749 Elf_Internal_Rela
*internal_relocs
, *irelaend
, *irela
;
2751 /* If there aren't any relocs, then there's nothing more
2753 if ((section
->flags
& SEC_RELOC
) == 0
2754 || section
->reloc_count
== 0)
2757 /* If this section is a link-once section that will be
2758 discarded, then don't create any stubs. */
2759 if (section
->output_section
== NULL
2760 || section
->output_section
->owner
!= output_bfd
)
2763 /* Get the relocs. */
2765 = _bfd_elf_link_read_relocs (input_bfd
, section
, NULL
, NULL
,
2767 if (internal_relocs
== NULL
)
2768 goto error_ret_free_local
;
2770 /* Now examine each relocation. */
2771 irela
= internal_relocs
;
2772 irelaend
= irela
+ section
->reloc_count
;
2773 for (; irela
< irelaend
; irela
++)
2775 unsigned int r_type
, r_indx
;
2776 enum elf32_hppa_stub_type stub_type
;
2777 struct elf32_hppa_stub_hash_entry
*stub_entry
;
2780 bfd_vma destination
;
2781 struct elf32_hppa_link_hash_entry
*hash
;
2783 const asection
*id_sec
;
2785 r_type
= ELF32_R_TYPE (irela
->r_info
);
2786 r_indx
= ELF32_R_SYM (irela
->r_info
);
2788 if (r_type
>= (unsigned int) R_PARISC_UNIMPLEMENTED
)
2790 bfd_set_error (bfd_error_bad_value
);
2791 error_ret_free_internal
:
2792 if (elf_section_data (section
)->relocs
== NULL
)
2793 free (internal_relocs
);
2794 goto error_ret_free_local
;
2797 /* Only look for stubs on call instructions. */
2798 if (r_type
!= (unsigned int) R_PARISC_PCREL12F
2799 && r_type
!= (unsigned int) R_PARISC_PCREL17F
2800 && r_type
!= (unsigned int) R_PARISC_PCREL22F
)
2803 /* Now determine the call target, its name, value,
2809 if (r_indx
< symtab_hdr
->sh_info
)
2811 /* It's a local symbol. */
2812 Elf_Internal_Sym
*sym
;
2813 Elf_Internal_Shdr
*hdr
;
2815 sym
= local_syms
+ r_indx
;
2816 hdr
= elf_elfsections (input_bfd
)[sym
->st_shndx
];
2817 sym_sec
= hdr
->bfd_section
;
2818 if (ELF_ST_TYPE (sym
->st_info
) != STT_SECTION
)
2819 sym_value
= sym
->st_value
;
2820 destination
= (sym_value
+ irela
->r_addend
2821 + sym_sec
->output_offset
2822 + sym_sec
->output_section
->vma
);
2826 /* It's an external symbol. */
2829 e_indx
= r_indx
- symtab_hdr
->sh_info
;
2830 hash
= ((struct elf32_hppa_link_hash_entry
*)
2831 elf_sym_hashes (input_bfd
)[e_indx
]);
2833 while (hash
->elf
.root
.type
== bfd_link_hash_indirect
2834 || hash
->elf
.root
.type
== bfd_link_hash_warning
)
2835 hash
= ((struct elf32_hppa_link_hash_entry
*)
2836 hash
->elf
.root
.u
.i
.link
);
2838 if (hash
->elf
.root
.type
== bfd_link_hash_defined
2839 || hash
->elf
.root
.type
== bfd_link_hash_defweak
)
2841 sym_sec
= hash
->elf
.root
.u
.def
.section
;
2842 sym_value
= hash
->elf
.root
.u
.def
.value
;
2843 if (sym_sec
->output_section
!= NULL
)
2844 destination
= (sym_value
+ irela
->r_addend
2845 + sym_sec
->output_offset
2846 + sym_sec
->output_section
->vma
);
2848 else if (hash
->elf
.root
.type
== bfd_link_hash_undefweak
)
2853 else if (hash
->elf
.root
.type
== bfd_link_hash_undefined
)
2856 && !info
->no_undefined
2857 && (ELF_ST_VISIBILITY (hash
->elf
.other
)
2859 && hash
->elf
.type
!= STT_PARISC_MILLI
))
2864 bfd_set_error (bfd_error_bad_value
);
2865 goto error_ret_free_internal
;
2869 /* Determine what (if any) linker stub is needed. */
2870 stub_type
= hppa_type_of_stub (section
, irela
, hash
,
2872 if (stub_type
== hppa_stub_none
)
2875 /* Support for grouping stub sections. */
2876 id_sec
= htab
->stub_group
[section
->id
].link_sec
;
2878 /* Get the name of this stub. */
2879 stub_name
= hppa_stub_name (id_sec
, sym_sec
, hash
, irela
);
2881 goto error_ret_free_internal
;
2883 stub_entry
= hppa_stub_hash_lookup (&htab
->stub_hash_table
,
2886 if (stub_entry
!= NULL
)
2888 /* The proper stub has already been created. */
2893 stub_entry
= hppa_add_stub (stub_name
, section
, htab
);
2894 if (stub_entry
== NULL
)
2897 goto error_ret_free_internal
;
2900 stub_entry
->target_value
= sym_value
;
2901 stub_entry
->target_section
= sym_sec
;
2902 stub_entry
->stub_type
= stub_type
;
2905 if (stub_type
== hppa_stub_import
)
2906 stub_entry
->stub_type
= hppa_stub_import_shared
;
2907 else if (stub_type
== hppa_stub_long_branch
)
2908 stub_entry
->stub_type
= hppa_stub_long_branch_shared
;
2910 stub_entry
->h
= hash
;
2911 stub_changed
= TRUE
;
2914 /* We're done with the internal relocs, free them. */
2915 if (elf_section_data (section
)->relocs
== NULL
)
2916 free (internal_relocs
);
2923 /* OK, we've added some stubs. Find out the new size of the
2925 for (stub_sec
= htab
->stub_bfd
->sections
;
2927 stub_sec
= stub_sec
->next
)
2929 stub_sec
->_raw_size
= 0;
2930 stub_sec
->_cooked_size
= 0;
2933 bfd_hash_traverse (&htab
->stub_hash_table
, hppa_size_one_stub
, htab
);
2935 /* Ask the linker to do its stuff. */
2936 (*htab
->layout_sections_again
) ();
2937 stub_changed
= FALSE
;
2940 free (htab
->all_local_syms
);
2943 error_ret_free_local
:
2944 free (htab
->all_local_syms
);
2948 /* For a final link, this function is called after we have sized the
2949 stubs to provide a value for __gp. */
2952 elf32_hppa_set_gp (bfd
*abfd
, struct bfd_link_info
*info
)
2954 struct bfd_link_hash_entry
*h
;
2955 asection
*sec
= NULL
;
2957 struct elf32_hppa_link_hash_table
*htab
;
2959 htab
= hppa_link_hash_table (info
);
2960 h
= bfd_link_hash_lookup (&htab
->elf
.root
, "$global$", FALSE
, FALSE
, FALSE
);
2963 && (h
->type
== bfd_link_hash_defined
2964 || h
->type
== bfd_link_hash_defweak
))
2966 gp_val
= h
->u
.def
.value
;
2967 sec
= h
->u
.def
.section
;
2974 if (htab
->elf
.root
.creator
->flavour
== bfd_target_elf_flavour
)
2981 /* If we're not elf, look up the output sections in the
2982 hope we may actually find them. */
2983 splt
= bfd_get_section_by_name (abfd
, ".plt");
2984 sgot
= bfd_get_section_by_name (abfd
, ".got");
2987 /* Choose to point our LTP at, in this order, one of .plt, .got,
2988 or .data, if these sections exist. In the case of choosing
2989 .plt try to make the LTP ideal for addressing anywhere in the
2990 .plt or .got with a 14 bit signed offset. Typically, the end
2991 of the .plt is the start of the .got, so choose .plt + 0x2000
2992 if either the .plt or .got is larger than 0x2000. If both
2993 the .plt and .got are smaller than 0x2000, choose the end of
2994 the .plt section. */
2998 gp_val
= sec
->_raw_size
;
2999 if (gp_val
> 0x2000 || (sgot
&& sgot
->_raw_size
> 0x2000))
3009 /* We know we don't have a .plt. If .got is large,
3011 if (sec
->_raw_size
> 0x2000)
3016 /* No .plt or .got. Who cares what the LTP is? */
3017 sec
= bfd_get_section_by_name (abfd
, ".data");
3023 h
->type
= bfd_link_hash_defined
;
3024 h
->u
.def
.value
= gp_val
;
3026 h
->u
.def
.section
= sec
;
3028 h
->u
.def
.section
= bfd_abs_section_ptr
;
3032 if (sec
!= NULL
&& sec
->output_section
!= NULL
)
3033 gp_val
+= sec
->output_section
->vma
+ sec
->output_offset
;
3035 elf_gp (abfd
) = gp_val
;
3039 /* Build all the stubs associated with the current output file. The
3040 stubs are kept in a hash table attached to the main linker hash
3041 table. We also set up the .plt entries for statically linked PIC
3042 functions here. This function is called via hppaelf_finish in the
3046 elf32_hppa_build_stubs (struct bfd_link_info
*info
)
3049 struct bfd_hash_table
*table
;
3050 struct elf32_hppa_link_hash_table
*htab
;
3052 htab
= hppa_link_hash_table (info
);
3054 for (stub_sec
= htab
->stub_bfd
->sections
;
3056 stub_sec
= stub_sec
->next
)
3060 /* Allocate memory to hold the linker stubs. */
3061 size
= stub_sec
->_raw_size
;
3062 stub_sec
->contents
= bfd_zalloc (htab
->stub_bfd
, size
);
3063 if (stub_sec
->contents
== NULL
&& size
!= 0)
3065 stub_sec
->_raw_size
= 0;
3068 /* Build the stubs as directed by the stub hash table. */
3069 table
= &htab
->stub_hash_table
;
3070 bfd_hash_traverse (table
, hppa_build_one_stub
, info
);
3075 /* Perform a final link. */
3078 elf32_hppa_final_link (bfd
*abfd
, struct bfd_link_info
*info
)
3080 /* Invoke the regular ELF linker to do all the work. */
3081 if (!bfd_elf32_bfd_final_link (abfd
, info
))
3084 /* If we're producing a final executable, sort the contents of the
3086 return elf_hppa_sort_unwind (abfd
);
3089 /* Record the lowest address for the data and text segments. */
3092 hppa_record_segment_addr (bfd
*abfd ATTRIBUTE_UNUSED
,
3096 struct elf32_hppa_link_hash_table
*htab
;
3098 htab
= (struct elf32_hppa_link_hash_table
*) data
;
3100 if ((section
->flags
& (SEC_ALLOC
| SEC_LOAD
)) == (SEC_ALLOC
| SEC_LOAD
))
3102 bfd_vma value
= section
->vma
- section
->filepos
;
3104 if ((section
->flags
& SEC_READONLY
) != 0)
3106 if (value
< htab
->text_segment_base
)
3107 htab
->text_segment_base
= value
;
3111 if (value
< htab
->data_segment_base
)
3112 htab
->data_segment_base
= value
;
3117 /* Perform a relocation as part of a final link. */
3119 static bfd_reloc_status_type
3120 final_link_relocate (asection
*input_section
,
3122 const Elf_Internal_Rela
*rel
,
3124 struct elf32_hppa_link_hash_table
*htab
,
3126 struct elf32_hppa_link_hash_entry
*h
)
3129 unsigned int r_type
= ELF32_R_TYPE (rel
->r_info
);
3130 reloc_howto_type
*howto
= elf_hppa_howto_table
+ r_type
;
3131 int r_format
= howto
->bitsize
;
3132 enum hppa_reloc_field_selector_type_alt r_field
;
3133 bfd
*input_bfd
= input_section
->owner
;
3134 bfd_vma offset
= rel
->r_offset
;
3135 bfd_vma max_branch_offset
= 0;
3136 bfd_byte
*hit_data
= contents
+ offset
;
3137 bfd_signed_vma addend
= rel
->r_addend
;
3139 struct elf32_hppa_stub_hash_entry
*stub_entry
= NULL
;
3142 if (r_type
== R_PARISC_NONE
)
3143 return bfd_reloc_ok
;
3145 insn
= bfd_get_32 (input_bfd
, hit_data
);
3147 /* Find out where we are and where we're going. */
3148 location
= (offset
+
3149 input_section
->output_offset
+
3150 input_section
->output_section
->vma
);
3154 case R_PARISC_PCREL12F
:
3155 case R_PARISC_PCREL17F
:
3156 case R_PARISC_PCREL22F
:
3157 /* If this call should go via the plt, find the import stub in
3160 || sym_sec
->output_section
== NULL
3162 && h
->elf
.plt
.offset
!= (bfd_vma
) -1
3163 && (h
->elf
.dynindx
!= -1 || h
->pic_call
)
3166 stub_entry
= hppa_get_stub_entry (input_section
, sym_sec
,
3168 if (stub_entry
!= NULL
)
3170 value
= (stub_entry
->stub_offset
3171 + stub_entry
->stub_sec
->output_offset
3172 + stub_entry
->stub_sec
->output_section
->vma
);
3175 else if (sym_sec
== NULL
&& h
!= NULL
3176 && h
->elf
.root
.type
== bfd_link_hash_undefweak
)
3178 /* It's OK if undefined weak. Calls to undefined weak
3179 symbols behave as if the "called" function
3180 immediately returns. We can thus call to a weak
3181 function without first checking whether the function
3187 return bfd_reloc_undefined
;
3191 case R_PARISC_PCREL21L
:
3192 case R_PARISC_PCREL17C
:
3193 case R_PARISC_PCREL17R
:
3194 case R_PARISC_PCREL14R
:
3195 case R_PARISC_PCREL14F
:
3196 /* Make it a pc relative offset. */
3201 case R_PARISC_DPREL21L
:
3202 case R_PARISC_DPREL14R
:
3203 case R_PARISC_DPREL14F
:
3204 /* For all the DP relative relocations, we need to examine the symbol's
3205 section. If it has no section or if it's a code section, then
3206 "data pointer relative" makes no sense. In that case we don't
3207 adjust the "value", and for 21 bit addil instructions, we change the
3208 source addend register from %dp to %r0. This situation commonly
3209 arises for undefined weak symbols and when a variable's "constness"
3210 is declared differently from the way the variable is defined. For
3211 instance: "extern int foo" with foo defined as "const int foo". */
3212 if (sym_sec
== NULL
|| (sym_sec
->flags
& SEC_CODE
) != 0)
3214 if ((insn
& ((0x3f << 26) | (0x1f << 21)))
3215 == (((int) OP_ADDIL
<< 26) | (27 << 21)))
3217 insn
&= ~ (0x1f << 21);
3218 #if 0 /* debug them. */
3219 (*_bfd_error_handler
)
3220 (_("%s(%s+0x%lx): fixing %s"),
3221 bfd_archive_filename (input_bfd
),
3222 input_section
->name
,
3223 (long) rel
->r_offset
,
3227 /* Now try to make things easy for the dynamic linker. */
3233 case R_PARISC_DLTIND21L
:
3234 case R_PARISC_DLTIND14R
:
3235 case R_PARISC_DLTIND14F
:
3236 value
-= elf_gp (input_section
->output_section
->owner
);
3239 case R_PARISC_SEGREL32
:
3240 if ((sym_sec
->flags
& SEC_CODE
) != 0)
3241 value
-= htab
->text_segment_base
;
3243 value
-= htab
->data_segment_base
;
3252 case R_PARISC_DIR32
:
3253 case R_PARISC_DIR14F
:
3254 case R_PARISC_DIR17F
:
3255 case R_PARISC_PCREL17C
:
3256 case R_PARISC_PCREL14F
:
3257 case R_PARISC_DPREL14F
:
3258 case R_PARISC_PLABEL32
:
3259 case R_PARISC_DLTIND14F
:
3260 case R_PARISC_SEGBASE
:
3261 case R_PARISC_SEGREL32
:
3265 case R_PARISC_DLTIND21L
:
3266 case R_PARISC_PCREL21L
:
3267 case R_PARISC_PLABEL21L
:
3271 case R_PARISC_DIR21L
:
3272 case R_PARISC_DPREL21L
:
3276 case R_PARISC_PCREL17R
:
3277 case R_PARISC_PCREL14R
:
3278 case R_PARISC_PLABEL14R
:
3279 case R_PARISC_DLTIND14R
:
3283 case R_PARISC_DIR17R
:
3284 case R_PARISC_DIR14R
:
3285 case R_PARISC_DPREL14R
:
3289 case R_PARISC_PCREL12F
:
3290 case R_PARISC_PCREL17F
:
3291 case R_PARISC_PCREL22F
:
3294 if (r_type
== (unsigned int) R_PARISC_PCREL17F
)
3296 max_branch_offset
= (1 << (17-1)) << 2;
3298 else if (r_type
== (unsigned int) R_PARISC_PCREL12F
)
3300 max_branch_offset
= (1 << (12-1)) << 2;
3304 max_branch_offset
= (1 << (22-1)) << 2;
3307 /* sym_sec is NULL on undefined weak syms or when shared on
3308 undefined syms. We've already checked for a stub for the
3309 shared undefined case. */
3310 if (sym_sec
== NULL
)
3313 /* If the branch is out of reach, then redirect the
3314 call to the local stub for this function. */
3315 if (value
+ addend
+ max_branch_offset
>= 2*max_branch_offset
)
3317 stub_entry
= hppa_get_stub_entry (input_section
, sym_sec
,
3319 if (stub_entry
== NULL
)
3320 return bfd_reloc_undefined
;
3322 /* Munge up the value and addend so that we call the stub
3323 rather than the procedure directly. */
3324 value
= (stub_entry
->stub_offset
3325 + stub_entry
->stub_sec
->output_offset
3326 + stub_entry
->stub_sec
->output_section
->vma
3332 /* Something we don't know how to handle. */
3334 return bfd_reloc_notsupported
;
3337 /* Make sure we can reach the stub. */
3338 if (max_branch_offset
!= 0
3339 && value
+ addend
+ max_branch_offset
>= 2*max_branch_offset
)
3341 (*_bfd_error_handler
)
3342 (_("%s(%s+0x%lx): cannot reach %s, recompile with -ffunction-sections"),
3343 bfd_archive_filename (input_bfd
),
3344 input_section
->name
,
3345 (long) rel
->r_offset
,
3346 stub_entry
->root
.string
);
3347 bfd_set_error (bfd_error_bad_value
);
3348 return bfd_reloc_notsupported
;
3351 val
= hppa_field_adjust (value
, addend
, r_field
);
3355 case R_PARISC_PCREL12F
:
3356 case R_PARISC_PCREL17C
:
3357 case R_PARISC_PCREL17F
:
3358 case R_PARISC_PCREL17R
:
3359 case R_PARISC_PCREL22F
:
3360 case R_PARISC_DIR17F
:
3361 case R_PARISC_DIR17R
:
3362 /* This is a branch. Divide the offset by four.
3363 Note that we need to decide whether it's a branch or
3364 otherwise by inspecting the reloc. Inspecting insn won't
3365 work as insn might be from a .word directive. */
3373 insn
= hppa_rebuild_insn (insn
, val
, r_format
);
3375 /* Update the instruction word. */
3376 bfd_put_32 (input_bfd
, (bfd_vma
) insn
, hit_data
);
3377 return bfd_reloc_ok
;
3380 /* Relocate an HPPA ELF section. */
3383 elf32_hppa_relocate_section (bfd
*output_bfd
,
3384 struct bfd_link_info
*info
,
3386 asection
*input_section
,
3388 Elf_Internal_Rela
*relocs
,
3389 Elf_Internal_Sym
*local_syms
,
3390 asection
**local_sections
)
3392 bfd_vma
*local_got_offsets
;
3393 struct elf32_hppa_link_hash_table
*htab
;
3394 Elf_Internal_Shdr
*symtab_hdr
;
3395 Elf_Internal_Rela
*rel
;
3396 Elf_Internal_Rela
*relend
;
3398 if (info
->relocatable
)
3401 symtab_hdr
= &elf_tdata (input_bfd
)->symtab_hdr
;
3403 htab
= hppa_link_hash_table (info
);
3404 local_got_offsets
= elf_local_got_offsets (input_bfd
);
3407 relend
= relocs
+ input_section
->reloc_count
;
3408 for (; rel
< relend
; rel
++)
3410 unsigned int r_type
;
3411 reloc_howto_type
*howto
;
3412 unsigned int r_symndx
;
3413 struct elf32_hppa_link_hash_entry
*h
;
3414 Elf_Internal_Sym
*sym
;
3417 bfd_reloc_status_type r
;
3418 const char *sym_name
;
3420 bfd_boolean warned_undef
;
3422 r_type
= ELF32_R_TYPE (rel
->r_info
);
3423 if (r_type
>= (unsigned int) R_PARISC_UNIMPLEMENTED
)
3425 bfd_set_error (bfd_error_bad_value
);
3428 if (r_type
== (unsigned int) R_PARISC_GNU_VTENTRY
3429 || r_type
== (unsigned int) R_PARISC_GNU_VTINHERIT
)
3432 /* This is a final link. */
3433 r_symndx
= ELF32_R_SYM (rel
->r_info
);
3437 warned_undef
= FALSE
;
3438 if (r_symndx
< symtab_hdr
->sh_info
)
3440 /* This is a local symbol, h defaults to NULL. */
3441 sym
= local_syms
+ r_symndx
;
3442 sym_sec
= local_sections
[r_symndx
];
3443 relocation
= _bfd_elf_rela_local_sym (output_bfd
, sym
, sym_sec
, rel
);
3449 /* It's a global; Find its entry in the link hash. */
3450 indx
= r_symndx
- symtab_hdr
->sh_info
;
3451 h
= ((struct elf32_hppa_link_hash_entry
*)
3452 elf_sym_hashes (input_bfd
)[indx
]);
3453 while (h
->elf
.root
.type
== bfd_link_hash_indirect
3454 || h
->elf
.root
.type
== bfd_link_hash_warning
)
3455 h
= (struct elf32_hppa_link_hash_entry
*) h
->elf
.root
.u
.i
.link
;
3458 if (h
->elf
.root
.type
== bfd_link_hash_defined
3459 || h
->elf
.root
.type
== bfd_link_hash_defweak
)
3461 sym_sec
= h
->elf
.root
.u
.def
.section
;
3462 /* If sym_sec->output_section is NULL, then it's a
3463 symbol defined in a shared library. */
3464 if (sym_sec
->output_section
!= NULL
)
3465 relocation
= (h
->elf
.root
.u
.def
.value
3466 + sym_sec
->output_offset
3467 + sym_sec
->output_section
->vma
);
3469 else if (h
->elf
.root
.type
== bfd_link_hash_undefweak
)
3471 else if (info
->shared
3472 && !info
->no_undefined
3473 && ELF_ST_VISIBILITY (h
->elf
.other
) == STV_DEFAULT
3474 && h
->elf
.type
!= STT_PARISC_MILLI
)
3478 if (!((*info
->callbacks
->undefined_symbol
)
3479 (info
, h
->elf
.root
.root
.string
, input_bfd
,
3480 input_section
, rel
->r_offset
, TRUE
)))
3482 warned_undef
= TRUE
;
3486 /* Do any required modifications to the relocation value, and
3487 determine what types of dynamic info we need to output, if
3492 case R_PARISC_DLTIND14F
:
3493 case R_PARISC_DLTIND14R
:
3494 case R_PARISC_DLTIND21L
:
3497 bfd_boolean do_got
= 0;
3499 /* Relocation is to the entry for this symbol in the
3500 global offset table. */
3505 off
= h
->elf
.got
.offset
;
3506 dyn
= htab
->elf
.dynamic_sections_created
;
3507 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn
, info
, &h
->elf
))
3509 /* If we aren't going to call finish_dynamic_symbol,
3510 then we need to handle initialisation of the .got
3511 entry and create needed relocs here. Since the
3512 offset must always be a multiple of 4, we use the
3513 least significant bit to record whether we have
3514 initialised it already. */
3519 h
->elf
.got
.offset
|= 1;
3526 /* Local symbol case. */
3527 if (local_got_offsets
== NULL
)
3530 off
= local_got_offsets
[r_symndx
];
3532 /* The offset must always be a multiple of 4. We use
3533 the least significant bit to record whether we have
3534 already generated the necessary reloc. */
3539 local_got_offsets
[r_symndx
] |= 1;
3548 /* Output a dynamic relocation for this GOT entry.
3549 In this case it is relative to the base of the
3550 object because the symbol index is zero. */
3551 Elf_Internal_Rela outrel
;
3553 asection
*s
= htab
->srelgot
;
3555 outrel
.r_offset
= (off
3556 + htab
->sgot
->output_offset
3557 + htab
->sgot
->output_section
->vma
);
3558 outrel
.r_info
= ELF32_R_INFO (0, R_PARISC_DIR32
);
3559 outrel
.r_addend
= relocation
;
3561 loc
+= s
->reloc_count
++ * sizeof (Elf32_External_Rela
);
3562 bfd_elf32_swap_reloca_out (output_bfd
, &outrel
, loc
);
3565 bfd_put_32 (output_bfd
, relocation
,
3566 htab
->sgot
->contents
+ off
);
3569 if (off
>= (bfd_vma
) -2)
3572 /* Add the base of the GOT to the relocation value. */
3574 + htab
->sgot
->output_offset
3575 + htab
->sgot
->output_section
->vma
);
3579 case R_PARISC_SEGREL32
:
3580 /* If this is the first SEGREL relocation, then initialize
3581 the segment base values. */
3582 if (htab
->text_segment_base
== (bfd_vma
) -1)
3583 bfd_map_over_sections (output_bfd
, hppa_record_segment_addr
, htab
);
3586 case R_PARISC_PLABEL14R
:
3587 case R_PARISC_PLABEL21L
:
3588 case R_PARISC_PLABEL32
:
3589 if (htab
->elf
.dynamic_sections_created
)
3592 bfd_boolean do_plt
= 0;
3594 /* If we have a global symbol with a PLT slot, then
3595 redirect this relocation to it. */
3598 off
= h
->elf
.plt
.offset
;
3599 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, info
, &h
->elf
))
3601 /* In a non-shared link, adjust_dynamic_symbols
3602 isn't called for symbols forced local. We
3603 need to write out the plt entry here. */
3608 h
->elf
.plt
.offset
|= 1;
3615 bfd_vma
*local_plt_offsets
;
3617 if (local_got_offsets
== NULL
)
3620 local_plt_offsets
= local_got_offsets
+ symtab_hdr
->sh_info
;
3621 off
= local_plt_offsets
[r_symndx
];
3623 /* As for the local .got entry case, we use the last
3624 bit to record whether we've already initialised
3625 this local .plt entry. */
3630 local_plt_offsets
[r_symndx
] |= 1;
3639 /* Output a dynamic IPLT relocation for this
3641 Elf_Internal_Rela outrel
;
3643 asection
*s
= htab
->srelplt
;
3645 outrel
.r_offset
= (off
3646 + htab
->splt
->output_offset
3647 + htab
->splt
->output_section
->vma
);
3648 outrel
.r_info
= ELF32_R_INFO (0, R_PARISC_IPLT
);
3649 outrel
.r_addend
= relocation
;
3651 loc
+= s
->reloc_count
++ * sizeof (Elf32_External_Rela
);
3652 bfd_elf32_swap_reloca_out (output_bfd
, &outrel
, loc
);
3656 bfd_put_32 (output_bfd
,
3658 htab
->splt
->contents
+ off
);
3659 bfd_put_32 (output_bfd
,
3660 elf_gp (htab
->splt
->output_section
->owner
),
3661 htab
->splt
->contents
+ off
+ 4);
3665 if (off
>= (bfd_vma
) -2)
3668 /* PLABELs contain function pointers. Relocation is to
3669 the entry for the function in the .plt. The magic +2
3670 offset signals to $$dyncall that the function pointer
3671 is in the .plt and thus has a gp pointer too.
3672 Exception: Undefined PLABELs should have a value of
3675 || (h
->elf
.root
.type
!= bfd_link_hash_undefweak
3676 && h
->elf
.root
.type
!= bfd_link_hash_undefined
))
3679 + htab
->splt
->output_offset
3680 + htab
->splt
->output_section
->vma
3685 /* Fall through and possibly emit a dynamic relocation. */
3687 case R_PARISC_DIR17F
:
3688 case R_PARISC_DIR17R
:
3689 case R_PARISC_DIR14F
:
3690 case R_PARISC_DIR14R
:
3691 case R_PARISC_DIR21L
:
3692 case R_PARISC_DPREL14F
:
3693 case R_PARISC_DPREL14R
:
3694 case R_PARISC_DPREL21L
:
3695 case R_PARISC_DIR32
:
3696 /* r_symndx will be zero only for relocs against symbols
3697 from removed linkonce sections, or sections discarded by
3700 || (input_section
->flags
& SEC_ALLOC
) == 0)
3703 /* The reloc types handled here and this conditional
3704 expression must match the code in ..check_relocs and
3705 allocate_dynrelocs. ie. We need exactly the same condition
3706 as in ..check_relocs, with some extra conditions (dynindx
3707 test in this case) to cater for relocs removed by
3708 allocate_dynrelocs. If you squint, the non-shared test
3709 here does indeed match the one in ..check_relocs, the
3710 difference being that here we test DEF_DYNAMIC as well as
3711 !DEF_REGULAR. All common syms end up with !DEF_REGULAR,
3712 which is why we can't use just that test here.
3713 Conversely, DEF_DYNAMIC can't be used in check_relocs as
3714 there all files have not been loaded. */
3716 && (IS_ABSOLUTE_RELOC (r_type
)
3718 && h
->elf
.dynindx
!= -1
3720 || (h
->elf
.elf_link_hash_flags
3721 & ELF_LINK_HASH_DEF_REGULAR
) == 0))))
3724 && h
->elf
.dynindx
!= -1
3725 && (h
->elf
.elf_link_hash_flags
& ELF_LINK_NON_GOT_REF
) == 0
3726 && (((h
->elf
.elf_link_hash_flags
3727 & ELF_LINK_HASH_DEF_DYNAMIC
) != 0
3728 && (h
->elf
.elf_link_hash_flags
3729 & ELF_LINK_HASH_DEF_REGULAR
) == 0)
3730 || h
->elf
.root
.type
== bfd_link_hash_undefweak
3731 || h
->elf
.root
.type
== bfd_link_hash_undefined
)))
3733 Elf_Internal_Rela outrel
;
3738 /* When generating a shared object, these relocations
3739 are copied into the output file to be resolved at run
3742 outrel
.r_addend
= rel
->r_addend
;
3744 _bfd_elf_section_offset (output_bfd
, info
, input_section
,
3746 skip
= (outrel
.r_offset
== (bfd_vma
) -1
3747 || outrel
.r_offset
== (bfd_vma
) -2);
3748 outrel
.r_offset
+= (input_section
->output_offset
3749 + input_section
->output_section
->vma
);
3753 memset (&outrel
, 0, sizeof (outrel
));
3756 && h
->elf
.dynindx
!= -1
3758 || !IS_ABSOLUTE_RELOC (r_type
)
3761 || (h
->elf
.elf_link_hash_flags
3762 & ELF_LINK_HASH_DEF_REGULAR
) == 0))
3764 outrel
.r_info
= ELF32_R_INFO (h
->elf
.dynindx
, r_type
);
3766 else /* It's a local symbol, or one marked to become local. */
3770 /* Add the absolute offset of the symbol. */
3771 outrel
.r_addend
+= relocation
;
3773 /* Global plabels need to be processed by the
3774 dynamic linker so that functions have at most one
3775 fptr. For this reason, we need to differentiate
3776 between global and local plabels, which we do by
3777 providing the function symbol for a global plabel
3778 reloc, and no symbol for local plabels. */
3781 && sym_sec
->output_section
!= NULL
3782 && ! bfd_is_abs_section (sym_sec
))
3784 indx
= elf_section_data (sym_sec
->output_section
)->dynindx
;
3785 /* We are turning this relocation into one
3786 against a section symbol, so subtract out the
3787 output section's address but not the offset
3788 of the input section in the output section. */
3789 outrel
.r_addend
-= sym_sec
->output_section
->vma
;
3792 outrel
.r_info
= ELF32_R_INFO (indx
, r_type
);
3795 /* EH info can cause unaligned DIR32 relocs.
3796 Tweak the reloc type for the dynamic linker. */
3797 if (r_type
== R_PARISC_DIR32
&& (outrel
.r_offset
& 3) != 0)
3798 outrel
.r_info
= ELF32_R_INFO (ELF32_R_SYM (outrel
.r_info
),
3801 sreloc
= elf_section_data (input_section
)->sreloc
;
3805 loc
= sreloc
->contents
;
3806 loc
+= sreloc
->reloc_count
++ * sizeof (Elf32_External_Rela
);
3807 bfd_elf32_swap_reloca_out (output_bfd
, &outrel
, loc
);
3815 r
= final_link_relocate (input_section
, contents
, rel
, relocation
,
3818 if (r
== bfd_reloc_ok
)
3822 sym_name
= h
->elf
.root
.root
.string
;
3825 sym_name
= bfd_elf_string_from_elf_section (input_bfd
,
3826 symtab_hdr
->sh_link
,
3828 if (sym_name
== NULL
)
3830 if (*sym_name
== '\0')
3831 sym_name
= bfd_section_name (input_bfd
, sym_sec
);
3834 howto
= elf_hppa_howto_table
+ r_type
;
3836 if (r
== bfd_reloc_undefined
|| r
== bfd_reloc_notsupported
)
3838 if (r
== bfd_reloc_notsupported
|| !warned_undef
)
3840 (*_bfd_error_handler
)
3841 (_("%s(%s+0x%lx): cannot handle %s for %s"),
3842 bfd_archive_filename (input_bfd
),
3843 input_section
->name
,
3844 (long) rel
->r_offset
,
3847 bfd_set_error (bfd_error_bad_value
);
3853 if (!((*info
->callbacks
->reloc_overflow
)
3854 (info
, sym_name
, howto
->name
, 0, input_bfd
, input_section
,
3863 /* Finish up dynamic symbol handling. We set the contents of various
3864 dynamic sections here. */
3867 elf32_hppa_finish_dynamic_symbol (bfd
*output_bfd
,
3868 struct bfd_link_info
*info
,
3869 struct elf_link_hash_entry
*h
,
3870 Elf_Internal_Sym
*sym
)
3872 struct elf32_hppa_link_hash_table
*htab
;
3874 htab
= hppa_link_hash_table (info
);
3876 if (h
->plt
.offset
!= (bfd_vma
) -1)
3880 if (h
->plt
.offset
& 1)
3883 /* This symbol has an entry in the procedure linkage table. Set
3886 The format of a plt entry is
3891 if (h
->root
.type
== bfd_link_hash_defined
3892 || h
->root
.type
== bfd_link_hash_defweak
)
3894 value
= h
->root
.u
.def
.value
;
3895 if (h
->root
.u
.def
.section
->output_section
!= NULL
)
3896 value
+= (h
->root
.u
.def
.section
->output_offset
3897 + h
->root
.u
.def
.section
->output_section
->vma
);
3900 if (! ((struct elf32_hppa_link_hash_entry
*) h
)->pic_call
)
3902 Elf_Internal_Rela rel
;
3905 /* Create a dynamic IPLT relocation for this entry. */
3906 rel
.r_offset
= (h
->plt
.offset
3907 + htab
->splt
->output_offset
3908 + htab
->splt
->output_section
->vma
);
3909 if (h
->dynindx
!= -1)
3911 rel
.r_info
= ELF32_R_INFO (h
->dynindx
, R_PARISC_IPLT
);
3916 /* This symbol has been marked to become local, and is
3917 used by a plabel so must be kept in the .plt. */
3918 rel
.r_info
= ELF32_R_INFO (0, R_PARISC_IPLT
);
3919 rel
.r_addend
= value
;
3922 loc
= htab
->srelplt
->contents
;
3923 loc
+= htab
->srelplt
->reloc_count
++ * sizeof (Elf32_External_Rela
);
3924 bfd_elf32_swap_reloca_out (htab
->splt
->output_section
->owner
,
3929 bfd_put_32 (htab
->splt
->owner
,
3931 htab
->splt
->contents
+ h
->plt
.offset
);
3932 bfd_put_32 (htab
->splt
->owner
,
3933 elf_gp (htab
->splt
->output_section
->owner
),
3934 htab
->splt
->contents
+ h
->plt
.offset
+ 4);
3937 if ((h
->elf_link_hash_flags
& ELF_LINK_HASH_DEF_REGULAR
) == 0)
3939 /* Mark the symbol as undefined, rather than as defined in
3940 the .plt section. Leave the value alone. */
3941 sym
->st_shndx
= SHN_UNDEF
;
3945 if (h
->got
.offset
!= (bfd_vma
) -1)
3947 Elf_Internal_Rela rel
;
3950 /* This symbol has an entry in the global offset table. Set it
3953 rel
.r_offset
= ((h
->got
.offset
&~ (bfd_vma
) 1)
3954 + htab
->sgot
->output_offset
3955 + htab
->sgot
->output_section
->vma
);
3957 /* If this is a -Bsymbolic link and the symbol is defined
3958 locally or was forced to be local because of a version file,
3959 we just want to emit a RELATIVE reloc. The entry in the
3960 global offset table will already have been initialized in the
3961 relocate_section function. */
3963 && (info
->symbolic
|| h
->dynindx
== -1)
3964 && (h
->elf_link_hash_flags
& ELF_LINK_HASH_DEF_REGULAR
))
3966 rel
.r_info
= ELF32_R_INFO (0, R_PARISC_DIR32
);
3967 rel
.r_addend
= (h
->root
.u
.def
.value
3968 + h
->root
.u
.def
.section
->output_offset
3969 + h
->root
.u
.def
.section
->output_section
->vma
);
3973 if ((h
->got
.offset
& 1) != 0)
3975 bfd_put_32 (output_bfd
, 0, htab
->sgot
->contents
+ h
->got
.offset
);
3976 rel
.r_info
= ELF32_R_INFO (h
->dynindx
, R_PARISC_DIR32
);
3980 loc
= htab
->srelgot
->contents
;
3981 loc
+= htab
->srelgot
->reloc_count
++ * sizeof (Elf32_External_Rela
);
3982 bfd_elf32_swap_reloca_out (output_bfd
, &rel
, loc
);
3985 if ((h
->elf_link_hash_flags
& ELF_LINK_HASH_NEEDS_COPY
) != 0)
3988 Elf_Internal_Rela rel
;
3991 /* This symbol needs a copy reloc. Set it up. */
3993 if (! (h
->dynindx
!= -1
3994 && (h
->root
.type
== bfd_link_hash_defined
3995 || h
->root
.type
== bfd_link_hash_defweak
)))
4000 rel
.r_offset
= (h
->root
.u
.def
.value
4001 + h
->root
.u
.def
.section
->output_offset
4002 + h
->root
.u
.def
.section
->output_section
->vma
);
4004 rel
.r_info
= ELF32_R_INFO (h
->dynindx
, R_PARISC_COPY
);
4005 loc
= s
->contents
+ s
->reloc_count
++ * sizeof (Elf32_External_Rela
);
4006 bfd_elf32_swap_reloca_out (output_bfd
, &rel
, loc
);
4009 /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. */
4010 if (h
->root
.root
.string
[0] == '_'
4011 && (strcmp (h
->root
.root
.string
, "_DYNAMIC") == 0
4012 || strcmp (h
->root
.root
.string
, "_GLOBAL_OFFSET_TABLE_") == 0))
4014 sym
->st_shndx
= SHN_ABS
;
4020 /* Used to decide how to sort relocs in an optimal manner for the
4021 dynamic linker, before writing them out. */
4023 static enum elf_reloc_type_class
4024 elf32_hppa_reloc_type_class (const Elf_Internal_Rela
*rela
)
4026 if (ELF32_R_SYM (rela
->r_info
) == 0)
4027 return reloc_class_relative
;
4029 switch ((int) ELF32_R_TYPE (rela
->r_info
))
4032 return reloc_class_plt
;
4034 return reloc_class_copy
;
4036 return reloc_class_normal
;
4040 /* Finish up the dynamic sections. */
4043 elf32_hppa_finish_dynamic_sections (bfd
*output_bfd
,
4044 struct bfd_link_info
*info
)
4047 struct elf32_hppa_link_hash_table
*htab
;
4050 htab
= hppa_link_hash_table (info
);
4051 dynobj
= htab
->elf
.dynobj
;
4053 sdyn
= bfd_get_section_by_name (dynobj
, ".dynamic");
4055 if (htab
->elf
.dynamic_sections_created
)
4057 Elf32_External_Dyn
*dyncon
, *dynconend
;
4062 dyncon
= (Elf32_External_Dyn
*) sdyn
->contents
;
4063 dynconend
= (Elf32_External_Dyn
*) (sdyn
->contents
+ sdyn
->_raw_size
);
4064 for (; dyncon
< dynconend
; dyncon
++)
4066 Elf_Internal_Dyn dyn
;
4069 bfd_elf32_swap_dyn_in (dynobj
, dyncon
, &dyn
);
4077 /* Use PLTGOT to set the GOT register. */
4078 dyn
.d_un
.d_ptr
= elf_gp (output_bfd
);
4083 dyn
.d_un
.d_ptr
= s
->output_section
->vma
+ s
->output_offset
;
4088 dyn
.d_un
.d_val
= s
->_raw_size
;
4092 /* Don't count procedure linkage table relocs in the
4093 overall reloc count. */
4097 dyn
.d_un
.d_val
-= s
->_raw_size
;
4101 /* We may not be using the standard ELF linker script.
4102 If .rela.plt is the first .rela section, we adjust
4103 DT_RELA to not include it. */
4107 if (dyn
.d_un
.d_ptr
!= s
->output_section
->vma
+ s
->output_offset
)
4109 dyn
.d_un
.d_ptr
+= s
->_raw_size
;
4113 bfd_elf32_swap_dyn_out (output_bfd
, &dyn
, dyncon
);
4117 if (htab
->sgot
!= NULL
&& htab
->sgot
->_raw_size
!= 0)
4119 /* Fill in the first entry in the global offset table.
4120 We use it to point to our dynamic section, if we have one. */
4121 bfd_put_32 (output_bfd
,
4122 sdyn
? sdyn
->output_section
->vma
+ sdyn
->output_offset
: 0,
4123 htab
->sgot
->contents
);
4125 /* The second entry is reserved for use by the dynamic linker. */
4126 memset (htab
->sgot
->contents
+ GOT_ENTRY_SIZE
, 0, GOT_ENTRY_SIZE
);
4128 /* Set .got entry size. */
4129 elf_section_data (htab
->sgot
->output_section
)
4130 ->this_hdr
.sh_entsize
= GOT_ENTRY_SIZE
;
4133 if (htab
->splt
!= NULL
&& htab
->splt
->_raw_size
!= 0)
4135 /* Set plt entry size. */
4136 elf_section_data (htab
->splt
->output_section
)
4137 ->this_hdr
.sh_entsize
= PLT_ENTRY_SIZE
;
4139 if (htab
->need_plt_stub
)
4141 /* Set up the .plt stub. */
4142 memcpy (htab
->splt
->contents
4143 + htab
->splt
->_raw_size
- sizeof (plt_stub
),
4144 plt_stub
, sizeof (plt_stub
));
4146 if ((htab
->splt
->output_offset
4147 + htab
->splt
->output_section
->vma
4148 + htab
->splt
->_raw_size
)
4149 != (htab
->sgot
->output_offset
4150 + htab
->sgot
->output_section
->vma
))
4152 (*_bfd_error_handler
)
4153 (_(".got section not immediately after .plt section"));
4162 /* Tweak the OSABI field of the elf header. */
4165 elf32_hppa_post_process_headers (bfd
*abfd
,
4166 struct bfd_link_info
*info ATTRIBUTE_UNUSED
)
4168 Elf_Internal_Ehdr
* i_ehdrp
;
4170 i_ehdrp
= elf_elfheader (abfd
);
4172 if (strcmp (bfd_get_target (abfd
), "elf32-hppa-linux") == 0)
4174 i_ehdrp
->e_ident
[EI_OSABI
] = ELFOSABI_LINUX
;
4178 i_ehdrp
->e_ident
[EI_OSABI
] = ELFOSABI_HPUX
;
4182 /* Called when writing out an object file to decide the type of a
4185 elf32_hppa_elf_get_symbol_type (Elf_Internal_Sym
*elf_sym
, int type
)
4187 if (ELF_ST_TYPE (elf_sym
->st_info
) == STT_PARISC_MILLI
)
4188 return STT_PARISC_MILLI
;
4193 /* Misc BFD support code. */
4194 #define bfd_elf32_bfd_is_local_label_name elf_hppa_is_local_label_name
4195 #define bfd_elf32_bfd_reloc_type_lookup elf_hppa_reloc_type_lookup
4196 #define elf_info_to_howto elf_hppa_info_to_howto
4197 #define elf_info_to_howto_rel elf_hppa_info_to_howto_rel
4199 /* Stuff for the BFD linker. */
4200 #define bfd_elf32_bfd_final_link elf32_hppa_final_link
4201 #define bfd_elf32_bfd_link_hash_table_create elf32_hppa_link_hash_table_create
4202 #define bfd_elf32_bfd_link_hash_table_free elf32_hppa_link_hash_table_free
4203 #define elf_backend_adjust_dynamic_symbol elf32_hppa_adjust_dynamic_symbol
4204 #define elf_backend_copy_indirect_symbol elf32_hppa_copy_indirect_symbol
4205 #define elf_backend_check_relocs elf32_hppa_check_relocs
4206 #define elf_backend_create_dynamic_sections elf32_hppa_create_dynamic_sections
4207 #define elf_backend_fake_sections elf_hppa_fake_sections
4208 #define elf_backend_relocate_section elf32_hppa_relocate_section
4209 #define elf_backend_hide_symbol elf32_hppa_hide_symbol
4210 #define elf_backend_finish_dynamic_symbol elf32_hppa_finish_dynamic_symbol
4211 #define elf_backend_finish_dynamic_sections elf32_hppa_finish_dynamic_sections
4212 #define elf_backend_size_dynamic_sections elf32_hppa_size_dynamic_sections
4213 #define elf_backend_gc_mark_hook elf32_hppa_gc_mark_hook
4214 #define elf_backend_gc_sweep_hook elf32_hppa_gc_sweep_hook
4215 #define elf_backend_object_p elf32_hppa_object_p
4216 #define elf_backend_final_write_processing elf_hppa_final_write_processing
4217 #define elf_backend_post_process_headers elf32_hppa_post_process_headers
4218 #define elf_backend_get_symbol_type elf32_hppa_elf_get_symbol_type
4219 #define elf_backend_reloc_type_class elf32_hppa_reloc_type_class
4221 #define elf_backend_can_gc_sections 1
4222 #define elf_backend_can_refcount 1
4223 #define elf_backend_plt_alignment 2
4224 #define elf_backend_want_got_plt 0
4225 #define elf_backend_plt_readonly 0
4226 #define elf_backend_want_plt_sym 0
4227 #define elf_backend_got_header_size 8
4228 #define elf_backend_rela_normal 1
4230 #define TARGET_BIG_SYM bfd_elf32_hppa_vec
4231 #define TARGET_BIG_NAME "elf32-hppa"
4232 #define ELF_ARCH bfd_arch_hppa
4233 #define ELF_MACHINE_CODE EM_PARISC
4234 #define ELF_MAXPAGESIZE 0x1000
4236 #include "elf32-target.h"
4238 #undef TARGET_BIG_SYM
4239 #define TARGET_BIG_SYM bfd_elf32_hppa_linux_vec
4240 #undef TARGET_BIG_NAME
4241 #define TARGET_BIG_NAME "elf32-hppa-linux"
4243 #define INCLUDED_TARGET_FILE 1
4244 #include "elf32-target.h"