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 /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
145 copying dynamic variables from a shared lib into an app's dynbss
146 section, and instead use a dynamic relocation to point into the
148 #define ELIMINATE_COPY_RELOCS 1
150 enum elf32_hppa_stub_type
{
151 hppa_stub_long_branch
,
152 hppa_stub_long_branch_shared
,
154 hppa_stub_import_shared
,
159 struct elf32_hppa_stub_hash_entry
{
161 /* Base hash table entry structure. */
162 struct bfd_hash_entry root
;
164 /* The stub section. */
167 /* Offset within stub_sec of the beginning of this stub. */
170 /* Given the symbol's value and its section we can determine its final
171 value when building the stubs (so the stub knows where to jump. */
172 bfd_vma target_value
;
173 asection
*target_section
;
175 enum elf32_hppa_stub_type stub_type
;
177 /* The symbol table entry, if any, that this was derived from. */
178 struct elf32_hppa_link_hash_entry
*h
;
180 /* Where this stub is being called from, or, in the case of combined
181 stub sections, the first input section in the group. */
185 struct elf32_hppa_link_hash_entry
{
187 struct elf_link_hash_entry elf
;
189 /* A pointer to the most recently used stub hash entry against this
191 struct elf32_hppa_stub_hash_entry
*stub_cache
;
193 /* Used to count relocations for delayed sizing of relocation
195 struct elf32_hppa_dyn_reloc_entry
{
197 /* Next relocation in the chain. */
198 struct elf32_hppa_dyn_reloc_entry
*next
;
200 /* The input section of the reloc. */
203 /* Number of relocs copied in this section. */
206 #if RELATIVE_DYNRELOCS
207 /* Number of relative relocs copied for the input section. */
208 bfd_size_type relative_count
;
212 /* Set if this symbol is used by a plabel reloc. */
213 unsigned int plabel
:1;
216 struct elf32_hppa_link_hash_table
{
218 /* The main hash table. */
219 struct elf_link_hash_table elf
;
221 /* The stub hash table. */
222 struct bfd_hash_table stub_hash_table
;
224 /* Linker stub bfd. */
227 /* Linker call-backs. */
228 asection
* (*add_stub_section
) (const char *, asection
*);
229 void (*layout_sections_again
) (void);
231 /* Array to keep track of which stub sections have been created, and
232 information on stub grouping. */
234 /* This is the section to which stubs in the group will be
237 /* The stub section. */
241 /* Assorted information used by elf32_hppa_size_stubs. */
242 unsigned int bfd_count
;
244 asection
**input_list
;
245 Elf_Internal_Sym
**all_local_syms
;
247 /* Short-cuts to get to dynamic linker sections. */
255 /* Used during a final link to store the base of the text and data
256 segments so that we can perform SEGREL relocations. */
257 bfd_vma text_segment_base
;
258 bfd_vma data_segment_base
;
260 /* Whether we support multiple sub-spaces for shared libs. */
261 unsigned int multi_subspace
:1;
263 /* Flags set when various size branches are detected. Used to
264 select suitable defaults for the stub group size. */
265 unsigned int has_12bit_branch
:1;
266 unsigned int has_17bit_branch
:1;
267 unsigned int has_22bit_branch
:1;
269 /* Set if we need a .plt stub to support lazy dynamic linking. */
270 unsigned int need_plt_stub
:1;
272 /* Small local sym to section mapping cache. */
273 struct sym_sec_cache sym_sec
;
276 /* Various hash macros and functions. */
277 #define hppa_link_hash_table(p) \
278 ((struct elf32_hppa_link_hash_table *) ((p)->hash))
280 #define hppa_stub_hash_lookup(table, string, create, copy) \
281 ((struct elf32_hppa_stub_hash_entry *) \
282 bfd_hash_lookup ((table), (string), (create), (copy)))
284 /* Assorted hash table functions. */
286 /* Initialize an entry in the stub hash table. */
288 static struct bfd_hash_entry
*
289 stub_hash_newfunc (struct bfd_hash_entry
*entry
,
290 struct bfd_hash_table
*table
,
293 /* Allocate the structure if it has not already been allocated by a
297 entry
= bfd_hash_allocate (table
,
298 sizeof (struct elf32_hppa_stub_hash_entry
));
303 /* Call the allocation method of the superclass. */
304 entry
= bfd_hash_newfunc (entry
, table
, string
);
307 struct elf32_hppa_stub_hash_entry
*eh
;
309 /* Initialize the local fields. */
310 eh
= (struct elf32_hppa_stub_hash_entry
*) entry
;
313 eh
->target_value
= 0;
314 eh
->target_section
= NULL
;
315 eh
->stub_type
= hppa_stub_long_branch
;
323 /* Initialize an entry in the link hash table. */
325 static struct bfd_hash_entry
*
326 hppa_link_hash_newfunc (struct bfd_hash_entry
*entry
,
327 struct bfd_hash_table
*table
,
330 /* Allocate the structure if it has not already been allocated by a
334 entry
= bfd_hash_allocate (table
,
335 sizeof (struct elf32_hppa_link_hash_entry
));
340 /* Call the allocation method of the superclass. */
341 entry
= _bfd_elf_link_hash_newfunc (entry
, table
, string
);
344 struct elf32_hppa_link_hash_entry
*eh
;
346 /* Initialize the local fields. */
347 eh
= (struct elf32_hppa_link_hash_entry
*) entry
;
348 eh
->stub_cache
= NULL
;
349 eh
->dyn_relocs
= NULL
;
356 /* Create the derived linker hash table. The PA ELF port uses the derived
357 hash table to keep information specific to the PA ELF linker (without
358 using static variables). */
360 static struct bfd_link_hash_table
*
361 elf32_hppa_link_hash_table_create (bfd
*abfd
)
363 struct elf32_hppa_link_hash_table
*ret
;
364 bfd_size_type amt
= sizeof (*ret
);
366 ret
= bfd_malloc (amt
);
370 if (!_bfd_elf_link_hash_table_init (&ret
->elf
, abfd
, hppa_link_hash_newfunc
))
376 /* Init the stub hash table too. */
377 if (!bfd_hash_table_init (&ret
->stub_hash_table
, stub_hash_newfunc
))
380 ret
->stub_bfd
= NULL
;
381 ret
->add_stub_section
= NULL
;
382 ret
->layout_sections_again
= NULL
;
383 ret
->stub_group
= NULL
;
390 ret
->text_segment_base
= (bfd_vma
) -1;
391 ret
->data_segment_base
= (bfd_vma
) -1;
392 ret
->multi_subspace
= 0;
393 ret
->has_12bit_branch
= 0;
394 ret
->has_17bit_branch
= 0;
395 ret
->has_22bit_branch
= 0;
396 ret
->need_plt_stub
= 0;
397 ret
->sym_sec
.abfd
= NULL
;
399 return &ret
->elf
.root
;
402 /* Free the derived linker hash table. */
405 elf32_hppa_link_hash_table_free (struct bfd_link_hash_table
*hash
)
407 struct elf32_hppa_link_hash_table
*ret
408 = (struct elf32_hppa_link_hash_table
*) hash
;
410 bfd_hash_table_free (&ret
->stub_hash_table
);
411 _bfd_generic_link_hash_table_free (hash
);
414 /* Build a name for an entry in the stub hash table. */
417 hppa_stub_name (const asection
*input_section
,
418 const asection
*sym_sec
,
419 const struct elf32_hppa_link_hash_entry
*hash
,
420 const Elf_Internal_Rela
*rel
)
427 len
= 8 + 1 + strlen (hash
->elf
.root
.root
.string
) + 1 + 8 + 1;
428 stub_name
= bfd_malloc (len
);
429 if (stub_name
!= NULL
)
431 sprintf (stub_name
, "%08x_%s+%x",
432 input_section
->id
& 0xffffffff,
433 hash
->elf
.root
.root
.string
,
434 (int) rel
->r_addend
& 0xffffffff);
439 len
= 8 + 1 + 8 + 1 + 8 + 1 + 8 + 1;
440 stub_name
= bfd_malloc (len
);
441 if (stub_name
!= NULL
)
443 sprintf (stub_name
, "%08x_%x:%x+%x",
444 input_section
->id
& 0xffffffff,
445 sym_sec
->id
& 0xffffffff,
446 (int) ELF32_R_SYM (rel
->r_info
) & 0xffffffff,
447 (int) rel
->r_addend
& 0xffffffff);
453 /* Look up an entry in the stub hash. Stub entries are cached because
454 creating the stub name takes a bit of time. */
456 static struct elf32_hppa_stub_hash_entry
*
457 hppa_get_stub_entry (const asection
*input_section
,
458 const asection
*sym_sec
,
459 struct elf32_hppa_link_hash_entry
*hash
,
460 const Elf_Internal_Rela
*rel
,
461 struct elf32_hppa_link_hash_table
*htab
)
463 struct elf32_hppa_stub_hash_entry
*stub_entry
;
464 const asection
*id_sec
;
466 /* If this input section is part of a group of sections sharing one
467 stub section, then use the id of the first section in the group.
468 Stub names need to include a section id, as there may well be
469 more than one stub used to reach say, printf, and we need to
470 distinguish between them. */
471 id_sec
= htab
->stub_group
[input_section
->id
].link_sec
;
473 if (hash
!= NULL
&& hash
->stub_cache
!= NULL
474 && hash
->stub_cache
->h
== hash
475 && hash
->stub_cache
->id_sec
== id_sec
)
477 stub_entry
= hash
->stub_cache
;
483 stub_name
= hppa_stub_name (id_sec
, sym_sec
, hash
, rel
);
484 if (stub_name
== NULL
)
487 stub_entry
= hppa_stub_hash_lookup (&htab
->stub_hash_table
,
488 stub_name
, FALSE
, FALSE
);
490 hash
->stub_cache
= stub_entry
;
498 /* Add a new stub entry to the stub hash. Not all fields of the new
499 stub entry are initialised. */
501 static struct elf32_hppa_stub_hash_entry
*
502 hppa_add_stub (const char *stub_name
,
504 struct elf32_hppa_link_hash_table
*htab
)
508 struct elf32_hppa_stub_hash_entry
*stub_entry
;
510 link_sec
= htab
->stub_group
[section
->id
].link_sec
;
511 stub_sec
= htab
->stub_group
[section
->id
].stub_sec
;
512 if (stub_sec
== NULL
)
514 stub_sec
= htab
->stub_group
[link_sec
->id
].stub_sec
;
515 if (stub_sec
== NULL
)
521 namelen
= strlen (link_sec
->name
);
522 len
= namelen
+ sizeof (STUB_SUFFIX
);
523 s_name
= bfd_alloc (htab
->stub_bfd
, len
);
527 memcpy (s_name
, link_sec
->name
, namelen
);
528 memcpy (s_name
+ namelen
, STUB_SUFFIX
, sizeof (STUB_SUFFIX
));
529 stub_sec
= (*htab
->add_stub_section
) (s_name
, link_sec
);
530 if (stub_sec
== NULL
)
532 htab
->stub_group
[link_sec
->id
].stub_sec
= stub_sec
;
534 htab
->stub_group
[section
->id
].stub_sec
= stub_sec
;
537 /* Enter this entry into the linker stub hash table. */
538 stub_entry
= hppa_stub_hash_lookup (&htab
->stub_hash_table
, stub_name
,
540 if (stub_entry
== NULL
)
542 (*_bfd_error_handler
) (_("%s: cannot create stub entry %s"),
543 bfd_archive_filename (section
->owner
),
548 stub_entry
->stub_sec
= stub_sec
;
549 stub_entry
->stub_offset
= 0;
550 stub_entry
->id_sec
= link_sec
;
554 /* Determine the type of stub needed, if any, for a call. */
556 static enum elf32_hppa_stub_type
557 hppa_type_of_stub (asection
*input_sec
,
558 const Elf_Internal_Rela
*rel
,
559 struct elf32_hppa_link_hash_entry
*hash
,
561 struct bfd_link_info
*info
)
564 bfd_vma branch_offset
;
565 bfd_vma max_branch_offset
;
569 && hash
->elf
.plt
.offset
!= (bfd_vma
) -1
570 && hash
->elf
.dynindx
!= -1
573 || !(hash
->elf
.elf_link_hash_flags
& ELF_LINK_HASH_DEF_REGULAR
)
574 || hash
->elf
.root
.type
== bfd_link_hash_defweak
))
576 /* We need an import stub. Decide between hppa_stub_import
577 and hppa_stub_import_shared later. */
578 return hppa_stub_import
;
581 /* Determine where the call point is. */
582 location
= (input_sec
->output_offset
583 + input_sec
->output_section
->vma
586 branch_offset
= destination
- location
- 8;
587 r_type
= ELF32_R_TYPE (rel
->r_info
);
589 /* Determine if a long branch stub is needed. parisc branch offsets
590 are relative to the second instruction past the branch, ie. +8
591 bytes on from the branch instruction location. The offset is
592 signed and counts in units of 4 bytes. */
593 if (r_type
== (unsigned int) R_PARISC_PCREL17F
)
595 max_branch_offset
= (1 << (17-1)) << 2;
597 else if (r_type
== (unsigned int) R_PARISC_PCREL12F
)
599 max_branch_offset
= (1 << (12-1)) << 2;
601 else /* R_PARISC_PCREL22F. */
603 max_branch_offset
= (1 << (22-1)) << 2;
606 if (branch_offset
+ max_branch_offset
>= 2*max_branch_offset
)
607 return hppa_stub_long_branch
;
609 return hppa_stub_none
;
612 /* Build one linker stub as defined by the stub hash table entry GEN_ENTRY.
613 IN_ARG contains the link info pointer. */
615 #define LDIL_R1 0x20200000 /* ldil LR'XXX,%r1 */
616 #define BE_SR4_R1 0xe0202002 /* be,n RR'XXX(%sr4,%r1) */
618 #define BL_R1 0xe8200000 /* b,l .+8,%r1 */
619 #define ADDIL_R1 0x28200000 /* addil LR'XXX,%r1,%r1 */
620 #define DEPI_R1 0xd4201c1e /* depi 0,31,2,%r1 */
622 #define ADDIL_DP 0x2b600000 /* addil LR'XXX,%dp,%r1 */
623 #define LDW_R1_R21 0x48350000 /* ldw RR'XXX(%sr0,%r1),%r21 */
624 #define BV_R0_R21 0xeaa0c000 /* bv %r0(%r21) */
625 #define LDW_R1_R19 0x48330000 /* ldw RR'XXX(%sr0,%r1),%r19 */
627 #define ADDIL_R19 0x2a600000 /* addil LR'XXX,%r19,%r1 */
628 #define LDW_R1_DP 0x483b0000 /* ldw RR'XXX(%sr0,%r1),%dp */
630 #define LDSID_R21_R1 0x02a010a1 /* ldsid (%sr0,%r21),%r1 */
631 #define MTSP_R1 0x00011820 /* mtsp %r1,%sr0 */
632 #define BE_SR0_R21 0xe2a00000 /* be 0(%sr0,%r21) */
633 #define STW_RP 0x6bc23fd1 /* stw %rp,-24(%sr0,%sp) */
635 #define BL22_RP 0xe800a002 /* b,l,n XXX,%rp */
636 #define BL_RP 0xe8400002 /* b,l,n XXX,%rp */
637 #define NOP 0x08000240 /* nop */
638 #define LDW_RP 0x4bc23fd1 /* ldw -24(%sr0,%sp),%rp */
639 #define LDSID_RP_R1 0x004010a1 /* ldsid (%sr0,%rp),%r1 */
640 #define BE_SR0_RP 0xe0400002 /* be,n 0(%sr0,%rp) */
647 #define LDW_R1_DLT LDW_R1_R19
649 #define LDW_R1_DLT LDW_R1_DP
653 hppa_build_one_stub (struct bfd_hash_entry
*gen_entry
, void *in_arg
)
655 struct elf32_hppa_stub_hash_entry
*stub_entry
;
656 struct bfd_link_info
*info
;
657 struct elf32_hppa_link_hash_table
*htab
;
667 /* Massage our args to the form they really have. */
668 stub_entry
= (struct elf32_hppa_stub_hash_entry
*) gen_entry
;
671 htab
= hppa_link_hash_table (info
);
672 stub_sec
= stub_entry
->stub_sec
;
674 /* Make a note of the offset within the stubs for this entry. */
675 stub_entry
->stub_offset
= stub_sec
->_raw_size
;
676 loc
= stub_sec
->contents
+ stub_entry
->stub_offset
;
678 stub_bfd
= stub_sec
->owner
;
680 switch (stub_entry
->stub_type
)
682 case hppa_stub_long_branch
:
683 /* Create the long branch. A long branch is formed with "ldil"
684 loading the upper bits of the target address into a register,
685 then branching with "be" which adds in the lower bits.
686 The "be" has its delay slot nullified. */
687 sym_value
= (stub_entry
->target_value
688 + stub_entry
->target_section
->output_offset
689 + stub_entry
->target_section
->output_section
->vma
);
691 val
= hppa_field_adjust (sym_value
, 0, e_lrsel
);
692 insn
= hppa_rebuild_insn ((int) LDIL_R1
, val
, 21);
693 bfd_put_32 (stub_bfd
, insn
, loc
);
695 val
= hppa_field_adjust (sym_value
, 0, e_rrsel
) >> 2;
696 insn
= hppa_rebuild_insn ((int) BE_SR4_R1
, val
, 17);
697 bfd_put_32 (stub_bfd
, insn
, loc
+ 4);
702 case hppa_stub_long_branch_shared
:
703 /* Branches are relative. This is where we are going to. */
704 sym_value
= (stub_entry
->target_value
705 + stub_entry
->target_section
->output_offset
706 + stub_entry
->target_section
->output_section
->vma
);
708 /* And this is where we are coming from, more or less. */
709 sym_value
-= (stub_entry
->stub_offset
710 + stub_sec
->output_offset
711 + stub_sec
->output_section
->vma
);
713 bfd_put_32 (stub_bfd
, (bfd_vma
) BL_R1
, loc
);
714 val
= hppa_field_adjust (sym_value
, (bfd_signed_vma
) -8, e_lrsel
);
715 insn
= hppa_rebuild_insn ((int) ADDIL_R1
, val
, 21);
716 bfd_put_32 (stub_bfd
, insn
, loc
+ 4);
718 val
= hppa_field_adjust (sym_value
, (bfd_signed_vma
) -8, e_rrsel
) >> 2;
719 insn
= hppa_rebuild_insn ((int) BE_SR4_R1
, val
, 17);
720 bfd_put_32 (stub_bfd
, insn
, loc
+ 8);
724 case hppa_stub_import
:
725 case hppa_stub_import_shared
:
726 off
= stub_entry
->h
->elf
.plt
.offset
;
727 if (off
>= (bfd_vma
) -2)
730 off
&= ~ (bfd_vma
) 1;
732 + htab
->splt
->output_offset
733 + htab
->splt
->output_section
->vma
734 - elf_gp (htab
->splt
->output_section
->owner
));
738 if (stub_entry
->stub_type
== hppa_stub_import_shared
)
741 val
= hppa_field_adjust (sym_value
, 0, e_lrsel
),
742 insn
= hppa_rebuild_insn ((int) insn
, val
, 21);
743 bfd_put_32 (stub_bfd
, insn
, loc
);
745 /* It is critical to use lrsel/rrsel here because we are using
746 two different offsets (+0 and +4) from sym_value. If we use
747 lsel/rsel then with unfortunate sym_values we will round
748 sym_value+4 up to the next 2k block leading to a mis-match
749 between the lsel and rsel value. */
750 val
= hppa_field_adjust (sym_value
, 0, e_rrsel
);
751 insn
= hppa_rebuild_insn ((int) LDW_R1_R21
, val
, 14);
752 bfd_put_32 (stub_bfd
, insn
, loc
+ 4);
754 if (htab
->multi_subspace
)
756 val
= hppa_field_adjust (sym_value
, (bfd_signed_vma
) 4, e_rrsel
);
757 insn
= hppa_rebuild_insn ((int) LDW_R1_DLT
, val
, 14);
758 bfd_put_32 (stub_bfd
, insn
, loc
+ 8);
760 bfd_put_32 (stub_bfd
, (bfd_vma
) LDSID_R21_R1
, loc
+ 12);
761 bfd_put_32 (stub_bfd
, (bfd_vma
) MTSP_R1
, loc
+ 16);
762 bfd_put_32 (stub_bfd
, (bfd_vma
) BE_SR0_R21
, loc
+ 20);
763 bfd_put_32 (stub_bfd
, (bfd_vma
) STW_RP
, loc
+ 24);
769 bfd_put_32 (stub_bfd
, (bfd_vma
) BV_R0_R21
, loc
+ 8);
770 val
= hppa_field_adjust (sym_value
, (bfd_signed_vma
) 4, e_rrsel
);
771 insn
= hppa_rebuild_insn ((int) LDW_R1_DLT
, val
, 14);
772 bfd_put_32 (stub_bfd
, insn
, loc
+ 12);
779 case hppa_stub_export
:
780 /* Branches are relative. This is where we are going to. */
781 sym_value
= (stub_entry
->target_value
782 + stub_entry
->target_section
->output_offset
783 + stub_entry
->target_section
->output_section
->vma
);
785 /* And this is where we are coming from. */
786 sym_value
-= (stub_entry
->stub_offset
787 + stub_sec
->output_offset
788 + stub_sec
->output_section
->vma
);
790 if (sym_value
- 8 + (1 << (17 + 1)) >= (1 << (17 + 2))
791 && (!htab
->has_22bit_branch
792 || sym_value
- 8 + (1 << (22 + 1)) >= (1 << (22 + 2))))
794 (*_bfd_error_handler
)
795 (_("%s(%s+0x%lx): cannot reach %s, recompile with -ffunction-sections"),
796 bfd_archive_filename (stub_entry
->target_section
->owner
),
798 (long) stub_entry
->stub_offset
,
799 stub_entry
->root
.string
);
800 bfd_set_error (bfd_error_bad_value
);
804 val
= hppa_field_adjust (sym_value
, (bfd_signed_vma
) -8, e_fsel
) >> 2;
805 if (!htab
->has_22bit_branch
)
806 insn
= hppa_rebuild_insn ((int) BL_RP
, val
, 17);
808 insn
= hppa_rebuild_insn ((int) BL22_RP
, val
, 22);
809 bfd_put_32 (stub_bfd
, insn
, loc
);
811 bfd_put_32 (stub_bfd
, (bfd_vma
) NOP
, loc
+ 4);
812 bfd_put_32 (stub_bfd
, (bfd_vma
) LDW_RP
, loc
+ 8);
813 bfd_put_32 (stub_bfd
, (bfd_vma
) LDSID_RP_R1
, loc
+ 12);
814 bfd_put_32 (stub_bfd
, (bfd_vma
) MTSP_R1
, loc
+ 16);
815 bfd_put_32 (stub_bfd
, (bfd_vma
) BE_SR0_RP
, loc
+ 20);
817 /* Point the function symbol at the stub. */
818 stub_entry
->h
->elf
.root
.u
.def
.section
= stub_sec
;
819 stub_entry
->h
->elf
.root
.u
.def
.value
= stub_sec
->_raw_size
;
829 stub_sec
->_raw_size
+= size
;
854 /* As above, but don't actually build the stub. Just bump offset so
855 we know stub section sizes. */
858 hppa_size_one_stub (struct bfd_hash_entry
*gen_entry
, void *in_arg
)
860 struct elf32_hppa_stub_hash_entry
*stub_entry
;
861 struct elf32_hppa_link_hash_table
*htab
;
864 /* Massage our args to the form they really have. */
865 stub_entry
= (struct elf32_hppa_stub_hash_entry
*) gen_entry
;
868 if (stub_entry
->stub_type
== hppa_stub_long_branch
)
870 else if (stub_entry
->stub_type
== hppa_stub_long_branch_shared
)
872 else if (stub_entry
->stub_type
== hppa_stub_export
)
874 else /* hppa_stub_import or hppa_stub_import_shared. */
876 if (htab
->multi_subspace
)
882 stub_entry
->stub_sec
->_raw_size
+= size
;
886 /* Return nonzero if ABFD represents an HPPA ELF32 file.
887 Additionally we set the default architecture and machine. */
890 elf32_hppa_object_p (bfd
*abfd
)
892 Elf_Internal_Ehdr
* i_ehdrp
;
895 i_ehdrp
= elf_elfheader (abfd
);
896 if (strcmp (bfd_get_target (abfd
), "elf32-hppa-linux") == 0)
898 /* GCC on hppa-linux produces binaries with OSABI=Linux,
899 but the kernel produces corefiles with OSABI=SysV. */
900 if (i_ehdrp
->e_ident
[EI_OSABI
] != ELFOSABI_LINUX
&&
901 i_ehdrp
->e_ident
[EI_OSABI
] != ELFOSABI_NONE
) /* aka SYSV */
906 if (i_ehdrp
->e_ident
[EI_OSABI
] != ELFOSABI_HPUX
)
910 flags
= i_ehdrp
->e_flags
;
911 switch (flags
& (EF_PARISC_ARCH
| EF_PARISC_WIDE
))
914 return bfd_default_set_arch_mach (abfd
, bfd_arch_hppa
, 10);
916 return bfd_default_set_arch_mach (abfd
, bfd_arch_hppa
, 11);
918 return bfd_default_set_arch_mach (abfd
, bfd_arch_hppa
, 20);
919 case EFA_PARISC_2_0
| EF_PARISC_WIDE
:
920 return bfd_default_set_arch_mach (abfd
, bfd_arch_hppa
, 25);
925 /* Create the .plt and .got sections, and set up our hash table
926 short-cuts to various dynamic sections. */
929 elf32_hppa_create_dynamic_sections (bfd
*abfd
, struct bfd_link_info
*info
)
931 struct elf32_hppa_link_hash_table
*htab
;
933 /* Don't try to create the .plt and .got twice. */
934 htab
= hppa_link_hash_table (info
);
935 if (htab
->splt
!= NULL
)
938 /* Call the generic code to do most of the work. */
939 if (! _bfd_elf_create_dynamic_sections (abfd
, info
))
942 htab
->splt
= bfd_get_section_by_name (abfd
, ".plt");
943 htab
->srelplt
= bfd_get_section_by_name (abfd
, ".rela.plt");
945 htab
->sgot
= bfd_get_section_by_name (abfd
, ".got");
946 htab
->srelgot
= bfd_make_section (abfd
, ".rela.got");
947 if (htab
->srelgot
== NULL
948 || ! bfd_set_section_flags (abfd
, htab
->srelgot
,
955 || ! bfd_set_section_alignment (abfd
, htab
->srelgot
, 2))
958 htab
->sdynbss
= bfd_get_section_by_name (abfd
, ".dynbss");
959 htab
->srelbss
= bfd_get_section_by_name (abfd
, ".rela.bss");
964 /* Copy the extra info we tack onto an elf_link_hash_entry. */
967 elf32_hppa_copy_indirect_symbol (const struct elf_backend_data
*bed
,
968 struct elf_link_hash_entry
*dir
,
969 struct elf_link_hash_entry
*ind
)
971 struct elf32_hppa_link_hash_entry
*edir
, *eind
;
973 edir
= (struct elf32_hppa_link_hash_entry
*) dir
;
974 eind
= (struct elf32_hppa_link_hash_entry
*) ind
;
976 if (eind
->dyn_relocs
!= NULL
)
978 if (edir
->dyn_relocs
!= NULL
)
980 struct elf32_hppa_dyn_reloc_entry
**pp
;
981 struct elf32_hppa_dyn_reloc_entry
*p
;
983 if (ind
->root
.type
== bfd_link_hash_indirect
)
986 /* Add reloc counts against the weak sym to the strong sym
987 list. Merge any entries against the same section. */
988 for (pp
= &eind
->dyn_relocs
; (p
= *pp
) != NULL
; )
990 struct elf32_hppa_dyn_reloc_entry
*q
;
992 for (q
= edir
->dyn_relocs
; q
!= NULL
; q
= q
->next
)
993 if (q
->sec
== p
->sec
)
995 #if RELATIVE_DYNRELOCS
996 q
->relative_count
+= p
->relative_count
;
998 q
->count
+= p
->count
;
1005 *pp
= edir
->dyn_relocs
;
1008 edir
->dyn_relocs
= eind
->dyn_relocs
;
1009 eind
->dyn_relocs
= NULL
;
1012 if (ELIMINATE_COPY_RELOCS
1013 && ind
->root
.type
!= bfd_link_hash_indirect
1014 && (dir
->elf_link_hash_flags
& ELF_LINK_HASH_DYNAMIC_ADJUSTED
) != 0)
1015 /* If called to transfer flags for a weakdef during processing
1016 of elf_adjust_dynamic_symbol, don't copy ELF_LINK_NON_GOT_REF.
1017 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
1018 dir
->elf_link_hash_flags
|=
1019 (ind
->elf_link_hash_flags
& (ELF_LINK_HASH_REF_DYNAMIC
1020 | ELF_LINK_HASH_REF_REGULAR
1021 | ELF_LINK_HASH_REF_REGULAR_NONWEAK
1022 | ELF_LINK_HASH_NEEDS_PLT
));
1024 _bfd_elf_link_hash_copy_indirect (bed
, dir
, ind
);
1027 /* Look through the relocs for a section during the first phase, and
1028 calculate needed space in the global offset table, procedure linkage
1029 table, and dynamic reloc sections. At this point we haven't
1030 necessarily read all the input files. */
1033 elf32_hppa_check_relocs (bfd
*abfd
,
1034 struct bfd_link_info
*info
,
1036 const Elf_Internal_Rela
*relocs
)
1038 Elf_Internal_Shdr
*symtab_hdr
;
1039 struct elf_link_hash_entry
**sym_hashes
;
1040 const Elf_Internal_Rela
*rel
;
1041 const Elf_Internal_Rela
*rel_end
;
1042 struct elf32_hppa_link_hash_table
*htab
;
1044 asection
*stubreloc
;
1046 if (info
->relocatable
)
1049 htab
= hppa_link_hash_table (info
);
1050 symtab_hdr
= &elf_tdata (abfd
)->symtab_hdr
;
1051 sym_hashes
= elf_sym_hashes (abfd
);
1055 rel_end
= relocs
+ sec
->reloc_count
;
1056 for (rel
= relocs
; rel
< rel_end
; rel
++)
1065 unsigned int r_symndx
, r_type
;
1066 struct elf32_hppa_link_hash_entry
*h
;
1069 r_symndx
= ELF32_R_SYM (rel
->r_info
);
1071 if (r_symndx
< symtab_hdr
->sh_info
)
1074 h
= ((struct elf32_hppa_link_hash_entry
*)
1075 sym_hashes
[r_symndx
- symtab_hdr
->sh_info
]);
1077 r_type
= ELF32_R_TYPE (rel
->r_info
);
1081 case R_PARISC_DLTIND14F
:
1082 case R_PARISC_DLTIND14R
:
1083 case R_PARISC_DLTIND21L
:
1084 /* This symbol requires a global offset table entry. */
1085 need_entry
= NEED_GOT
;
1088 case R_PARISC_PLABEL14R
: /* "Official" procedure labels. */
1089 case R_PARISC_PLABEL21L
:
1090 case R_PARISC_PLABEL32
:
1091 /* If the addend is non-zero, we break badly. */
1092 if (rel
->r_addend
!= 0)
1095 /* If we are creating a shared library, then we need to
1096 create a PLT entry for all PLABELs, because PLABELs with
1097 local symbols may be passed via a pointer to another
1098 object. Additionally, output a dynamic relocation
1099 pointing to the PLT entry.
1100 For executables, the original 32-bit ABI allowed two
1101 different styles of PLABELs (function pointers): For
1102 global functions, the PLABEL word points into the .plt
1103 two bytes past a (function address, gp) pair, and for
1104 local functions the PLABEL points directly at the
1105 function. The magic +2 for the first type allows us to
1106 differentiate between the two. As you can imagine, this
1107 is a real pain when it comes to generating code to call
1108 functions indirectly or to compare function pointers.
1109 We avoid the mess by always pointing a PLABEL into the
1110 .plt, even for local functions. */
1111 need_entry
= PLT_PLABEL
| NEED_PLT
| NEED_DYNREL
;
1114 case R_PARISC_PCREL12F
:
1115 htab
->has_12bit_branch
= 1;
1118 case R_PARISC_PCREL17C
:
1119 case R_PARISC_PCREL17F
:
1120 htab
->has_17bit_branch
= 1;
1123 case R_PARISC_PCREL22F
:
1124 htab
->has_22bit_branch
= 1;
1126 /* Function calls might need to go through the .plt, and
1127 might require long branch stubs. */
1130 /* We know local syms won't need a .plt entry, and if
1131 they need a long branch stub we can't guarantee that
1132 we can reach the stub. So just flag an error later
1133 if we're doing a shared link and find we need a long
1139 /* Global symbols will need a .plt entry if they remain
1140 global, and in most cases won't need a long branch
1141 stub. Unfortunately, we have to cater for the case
1142 where a symbol is forced local by versioning, or due
1143 to symbolic linking, and we lose the .plt entry. */
1144 need_entry
= NEED_PLT
;
1145 if (h
->elf
.type
== STT_PARISC_MILLI
)
1150 case R_PARISC_SEGBASE
: /* Used to set segment base. */
1151 case R_PARISC_SEGREL32
: /* Relative reloc, used for unwind. */
1152 case R_PARISC_PCREL14F
: /* PC relative load/store. */
1153 case R_PARISC_PCREL14R
:
1154 case R_PARISC_PCREL17R
: /* External branches. */
1155 case R_PARISC_PCREL21L
: /* As above, and for load/store too. */
1156 case R_PARISC_PCREL32
:
1157 /* We don't need to propagate the relocation if linking a
1158 shared object since these are section relative. */
1161 case R_PARISC_DPREL14F
: /* Used for gp rel data load/store. */
1162 case R_PARISC_DPREL14R
:
1163 case R_PARISC_DPREL21L
:
1166 (*_bfd_error_handler
)
1167 (_("%s: relocation %s can not be used when making a shared object; recompile with -fPIC"),
1168 bfd_archive_filename (abfd
),
1169 elf_hppa_howto_table
[r_type
].name
);
1170 bfd_set_error (bfd_error_bad_value
);
1175 case R_PARISC_DIR17F
: /* Used for external branches. */
1176 case R_PARISC_DIR17R
:
1177 case R_PARISC_DIR14F
: /* Used for load/store from absolute locn. */
1178 case R_PARISC_DIR14R
:
1179 case R_PARISC_DIR21L
: /* As above, and for ext branches too. */
1181 /* Help debug shared library creation. Any of the above
1182 relocs can be used in shared libs, but they may cause
1183 pages to become unshared. */
1186 (*_bfd_error_handler
)
1187 (_("%s: relocation %s should not be used when making a shared object; recompile with -fPIC"),
1188 bfd_archive_filename (abfd
),
1189 elf_hppa_howto_table
[r_type
].name
);
1194 case R_PARISC_DIR32
: /* .word relocs. */
1195 /* We may want to output a dynamic relocation later. */
1196 need_entry
= NEED_DYNREL
;
1199 /* This relocation describes the C++ object vtable hierarchy.
1200 Reconstruct it for later use during GC. */
1201 case R_PARISC_GNU_VTINHERIT
:
1202 if (!_bfd_elf32_gc_record_vtinherit (abfd
, sec
,
1203 &h
->elf
, rel
->r_offset
))
1207 /* This relocation describes which C++ vtable entries are actually
1208 used. Record for later use during GC. */
1209 case R_PARISC_GNU_VTENTRY
:
1210 if (!_bfd_elf32_gc_record_vtentry (abfd
, sec
,
1211 &h
->elf
, rel
->r_addend
))
1219 /* Now carry out our orders. */
1220 if (need_entry
& NEED_GOT
)
1222 /* Allocate space for a GOT entry, as well as a dynamic
1223 relocation for this entry. */
1224 if (htab
->sgot
== NULL
)
1226 if (htab
->elf
.dynobj
== NULL
)
1227 htab
->elf
.dynobj
= abfd
;
1228 if (!elf32_hppa_create_dynamic_sections (htab
->elf
.dynobj
, info
))
1234 h
->elf
.got
.refcount
+= 1;
1238 bfd_signed_vma
*local_got_refcounts
;
1240 /* This is a global offset table entry for a local symbol. */
1241 local_got_refcounts
= elf_local_got_refcounts (abfd
);
1242 if (local_got_refcounts
== NULL
)
1246 /* Allocate space for local got offsets and local
1247 plt offsets. Done this way to save polluting
1248 elf_obj_tdata with another target specific
1250 size
= symtab_hdr
->sh_info
;
1251 size
*= 2 * sizeof (bfd_signed_vma
);
1252 local_got_refcounts
= bfd_zalloc (abfd
, size
);
1253 if (local_got_refcounts
== NULL
)
1255 elf_local_got_refcounts (abfd
) = local_got_refcounts
;
1257 local_got_refcounts
[r_symndx
] += 1;
1261 if (need_entry
& NEED_PLT
)
1263 /* If we are creating a shared library, and this is a reloc
1264 against a weak symbol or a global symbol in a dynamic
1265 object, then we will be creating an import stub and a
1266 .plt entry for the symbol. Similarly, on a normal link
1267 to symbols defined in a dynamic object we'll need the
1268 import stub and a .plt entry. We don't know yet whether
1269 the symbol is defined or not, so make an entry anyway and
1270 clean up later in adjust_dynamic_symbol. */
1271 if ((sec
->flags
& SEC_ALLOC
) != 0)
1275 h
->elf
.elf_link_hash_flags
|= ELF_LINK_HASH_NEEDS_PLT
;
1276 h
->elf
.plt
.refcount
+= 1;
1278 /* If this .plt entry is for a plabel, mark it so
1279 that adjust_dynamic_symbol will keep the entry
1280 even if it appears to be local. */
1281 if (need_entry
& PLT_PLABEL
)
1284 else if (need_entry
& PLT_PLABEL
)
1286 bfd_signed_vma
*local_got_refcounts
;
1287 bfd_signed_vma
*local_plt_refcounts
;
1289 local_got_refcounts
= elf_local_got_refcounts (abfd
);
1290 if (local_got_refcounts
== NULL
)
1294 /* Allocate space for local got offsets and local
1296 size
= symtab_hdr
->sh_info
;
1297 size
*= 2 * sizeof (bfd_signed_vma
);
1298 local_got_refcounts
= bfd_zalloc (abfd
, size
);
1299 if (local_got_refcounts
== NULL
)
1301 elf_local_got_refcounts (abfd
) = local_got_refcounts
;
1303 local_plt_refcounts
= (local_got_refcounts
1304 + symtab_hdr
->sh_info
);
1305 local_plt_refcounts
[r_symndx
] += 1;
1310 if (need_entry
& NEED_DYNREL
)
1312 /* Flag this symbol as having a non-got, non-plt reference
1313 so that we generate copy relocs if it turns out to be
1315 if (h
!= NULL
&& !info
->shared
)
1316 h
->elf
.elf_link_hash_flags
|= ELF_LINK_NON_GOT_REF
;
1318 /* If we are creating a shared library then we need to copy
1319 the reloc into the shared library. However, if we are
1320 linking with -Bsymbolic, we need only copy absolute
1321 relocs or relocs against symbols that are not defined in
1322 an object we are including in the link. PC- or DP- or
1323 DLT-relative relocs against any local sym or global sym
1324 with DEF_REGULAR set, can be discarded. At this point we
1325 have not seen all the input files, so it is possible that
1326 DEF_REGULAR is not set now but will be set later (it is
1327 never cleared). We account for that possibility below by
1328 storing information in the dyn_relocs field of the
1331 A similar situation to the -Bsymbolic case occurs when
1332 creating shared libraries and symbol visibility changes
1333 render the symbol local.
1335 As it turns out, all the relocs we will be creating here
1336 are absolute, so we cannot remove them on -Bsymbolic
1337 links or visibility changes anyway. A STUB_REL reloc
1338 is absolute too, as in that case it is the reloc in the
1339 stub we will be creating, rather than copying the PCREL
1340 reloc in the branch.
1342 If on the other hand, we are creating an executable, we
1343 may need to keep relocations for symbols satisfied by a
1344 dynamic library if we manage to avoid copy relocs for the
1347 && (sec
->flags
& SEC_ALLOC
) != 0
1348 && (IS_ABSOLUTE_RELOC (r_type
)
1351 || h
->elf
.root
.type
== bfd_link_hash_defweak
1352 || (h
->elf
.elf_link_hash_flags
1353 & ELF_LINK_HASH_DEF_REGULAR
) == 0))))
1354 || (ELIMINATE_COPY_RELOCS
1356 && (sec
->flags
& SEC_ALLOC
) != 0
1358 && (h
->elf
.root
.type
== bfd_link_hash_defweak
1359 || (h
->elf
.elf_link_hash_flags
1360 & ELF_LINK_HASH_DEF_REGULAR
) == 0)))
1362 struct elf32_hppa_dyn_reloc_entry
*p
;
1363 struct elf32_hppa_dyn_reloc_entry
**head
;
1365 /* Create a reloc section in dynobj and make room for
1372 name
= (bfd_elf_string_from_elf_section
1374 elf_elfheader (abfd
)->e_shstrndx
,
1375 elf_section_data (sec
)->rel_hdr
.sh_name
));
1378 (*_bfd_error_handler
)
1379 (_("Could not find relocation section for %s"),
1381 bfd_set_error (bfd_error_bad_value
);
1385 if (htab
->elf
.dynobj
== NULL
)
1386 htab
->elf
.dynobj
= abfd
;
1388 dynobj
= htab
->elf
.dynobj
;
1389 sreloc
= bfd_get_section_by_name (dynobj
, name
);
1394 sreloc
= bfd_make_section (dynobj
, name
);
1395 flags
= (SEC_HAS_CONTENTS
| SEC_READONLY
1396 | SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
1397 if ((sec
->flags
& SEC_ALLOC
) != 0)
1398 flags
|= SEC_ALLOC
| SEC_LOAD
;
1400 || !bfd_set_section_flags (dynobj
, sreloc
, flags
)
1401 || !bfd_set_section_alignment (dynobj
, sreloc
, 2))
1405 elf_section_data (sec
)->sreloc
= sreloc
;
1408 /* If this is a global symbol, we count the number of
1409 relocations we need for this symbol. */
1412 head
= &h
->dyn_relocs
;
1416 /* Track dynamic relocs needed for local syms too.
1417 We really need local syms available to do this
1421 s
= bfd_section_from_r_symndx (abfd
, &htab
->sym_sec
,
1426 head
= ((struct elf32_hppa_dyn_reloc_entry
**)
1427 &elf_section_data (s
)->local_dynrel
);
1431 if (p
== NULL
|| p
->sec
!= sec
)
1433 p
= bfd_alloc (htab
->elf
.dynobj
, sizeof *p
);
1440 #if RELATIVE_DYNRELOCS
1441 p
->relative_count
= 0;
1446 #if RELATIVE_DYNRELOCS
1447 if (!IS_ABSOLUTE_RELOC (rtype
))
1448 p
->relative_count
+= 1;
1457 /* Return the section that should be marked against garbage collection
1458 for a given relocation. */
1461 elf32_hppa_gc_mark_hook (asection
*sec
,
1462 struct bfd_link_info
*info ATTRIBUTE_UNUSED
,
1463 Elf_Internal_Rela
*rel
,
1464 struct elf_link_hash_entry
*h
,
1465 Elf_Internal_Sym
*sym
)
1469 switch ((unsigned int) ELF32_R_TYPE (rel
->r_info
))
1471 case R_PARISC_GNU_VTINHERIT
:
1472 case R_PARISC_GNU_VTENTRY
:
1476 switch (h
->root
.type
)
1478 case bfd_link_hash_defined
:
1479 case bfd_link_hash_defweak
:
1480 return h
->root
.u
.def
.section
;
1482 case bfd_link_hash_common
:
1483 return h
->root
.u
.c
.p
->section
;
1491 return bfd_section_from_elf_index (sec
->owner
, sym
->st_shndx
);
1496 /* Update the got and plt entry reference counts for the section being
1500 elf32_hppa_gc_sweep_hook (bfd
*abfd
,
1501 struct bfd_link_info
*info ATTRIBUTE_UNUSED
,
1503 const Elf_Internal_Rela
*relocs
)
1505 Elf_Internal_Shdr
*symtab_hdr
;
1506 struct elf_link_hash_entry
**sym_hashes
;
1507 bfd_signed_vma
*local_got_refcounts
;
1508 bfd_signed_vma
*local_plt_refcounts
;
1509 const Elf_Internal_Rela
*rel
, *relend
;
1511 elf_section_data (sec
)->local_dynrel
= NULL
;
1513 symtab_hdr
= &elf_tdata (abfd
)->symtab_hdr
;
1514 sym_hashes
= elf_sym_hashes (abfd
);
1515 local_got_refcounts
= elf_local_got_refcounts (abfd
);
1516 local_plt_refcounts
= local_got_refcounts
;
1517 if (local_plt_refcounts
!= NULL
)
1518 local_plt_refcounts
+= symtab_hdr
->sh_info
;
1520 relend
= relocs
+ sec
->reloc_count
;
1521 for (rel
= relocs
; rel
< relend
; rel
++)
1523 unsigned long r_symndx
;
1524 unsigned int r_type
;
1525 struct elf_link_hash_entry
*h
= NULL
;
1527 r_symndx
= ELF32_R_SYM (rel
->r_info
);
1528 if (r_symndx
>= symtab_hdr
->sh_info
)
1530 struct elf32_hppa_link_hash_entry
*eh
;
1531 struct elf32_hppa_dyn_reloc_entry
**pp
;
1532 struct elf32_hppa_dyn_reloc_entry
*p
;
1534 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
1535 eh
= (struct elf32_hppa_link_hash_entry
*) h
;
1537 for (pp
= &eh
->dyn_relocs
; (p
= *pp
) != NULL
; pp
= &p
->next
)
1540 /* Everything must go for SEC. */
1546 r_type
= ELF32_R_TYPE (rel
->r_info
);
1549 case R_PARISC_DLTIND14F
:
1550 case R_PARISC_DLTIND14R
:
1551 case R_PARISC_DLTIND21L
:
1554 if (h
->got
.refcount
> 0)
1555 h
->got
.refcount
-= 1;
1557 else if (local_got_refcounts
!= NULL
)
1559 if (local_got_refcounts
[r_symndx
] > 0)
1560 local_got_refcounts
[r_symndx
] -= 1;
1564 case R_PARISC_PCREL12F
:
1565 case R_PARISC_PCREL17C
:
1566 case R_PARISC_PCREL17F
:
1567 case R_PARISC_PCREL22F
:
1570 if (h
->plt
.refcount
> 0)
1571 h
->plt
.refcount
-= 1;
1575 case R_PARISC_PLABEL14R
:
1576 case R_PARISC_PLABEL21L
:
1577 case R_PARISC_PLABEL32
:
1580 if (h
->plt
.refcount
> 0)
1581 h
->plt
.refcount
-= 1;
1583 else if (local_plt_refcounts
!= NULL
)
1585 if (local_plt_refcounts
[r_symndx
] > 0)
1586 local_plt_refcounts
[r_symndx
] -= 1;
1598 /* Our own version of hide_symbol, so that we can keep plt entries for
1602 elf32_hppa_hide_symbol (struct bfd_link_info
*info
,
1603 struct elf_link_hash_entry
*h
,
1604 bfd_boolean force_local
)
1608 h
->elf_link_hash_flags
|= ELF_LINK_FORCED_LOCAL
;
1609 if (h
->dynindx
!= -1)
1612 _bfd_elf_strtab_delref (elf_hash_table (info
)->dynstr
,
1617 if (! ((struct elf32_hppa_link_hash_entry
*) h
)->plabel
)
1619 h
->elf_link_hash_flags
&= ~ELF_LINK_HASH_NEEDS_PLT
;
1620 h
->plt
.offset
= (bfd_vma
) -1;
1624 /* This is the condition under which elf32_hppa_finish_dynamic_symbol
1625 will be called from elflink.h. If elflink.h doesn't call our
1626 finish_dynamic_symbol routine, we'll need to do something about
1627 initializing any .plt and .got entries in elf32_hppa_relocate_section. */
1628 #define WILL_CALL_FINISH_DYNAMIC_SYMBOL(DYN, INFO, H) \
1630 && ((INFO)->shared \
1631 || ((H)->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0) \
1632 && ((H)->dynindx != -1 \
1633 || ((H)->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) != 0))
1635 /* Adjust a symbol defined by a dynamic object and referenced by a
1636 regular object. The current definition is in some section of the
1637 dynamic object, but we're not including those sections. We have to
1638 change the definition to something the rest of the link can
1642 elf32_hppa_adjust_dynamic_symbol (struct bfd_link_info
*info
,
1643 struct elf_link_hash_entry
*h
)
1645 struct elf32_hppa_link_hash_table
*htab
;
1647 unsigned int power_of_two
;
1649 /* If this is a function, put it in the procedure linkage table. We
1650 will fill in the contents of the procedure linkage table later. */
1651 if (h
->type
== STT_FUNC
1652 || (h
->elf_link_hash_flags
& ELF_LINK_HASH_NEEDS_PLT
) != 0)
1654 if (h
->plt
.refcount
<= 0
1655 || ((h
->elf_link_hash_flags
& ELF_LINK_HASH_DEF_REGULAR
) != 0
1656 && h
->root
.type
!= bfd_link_hash_defweak
1657 && ! ((struct elf32_hppa_link_hash_entry
*) h
)->plabel
1658 && (!info
->shared
|| info
->symbolic
)))
1660 /* The .plt entry is not needed when:
1661 a) Garbage collection has removed all references to the
1663 b) We know for certain the symbol is defined in this
1664 object, and it's not a weak definition, nor is the symbol
1665 used by a plabel relocation. Either this object is the
1666 application or we are doing a shared symbolic link. */
1668 h
->plt
.offset
= (bfd_vma
) -1;
1669 h
->elf_link_hash_flags
&= ~ELF_LINK_HASH_NEEDS_PLT
;
1675 h
->plt
.offset
= (bfd_vma
) -1;
1677 /* If this is a weak symbol, and there is a real definition, the
1678 processor independent code will have arranged for us to see the
1679 real definition first, and we can just use the same value. */
1680 if (h
->weakdef
!= NULL
)
1682 if (h
->weakdef
->root
.type
!= bfd_link_hash_defined
1683 && h
->weakdef
->root
.type
!= bfd_link_hash_defweak
)
1685 h
->root
.u
.def
.section
= h
->weakdef
->root
.u
.def
.section
;
1686 h
->root
.u
.def
.value
= h
->weakdef
->root
.u
.def
.value
;
1687 if (ELIMINATE_COPY_RELOCS
)
1688 h
->elf_link_hash_flags
1689 = ((h
->elf_link_hash_flags
& ~ELF_LINK_NON_GOT_REF
)
1690 | (h
->weakdef
->elf_link_hash_flags
& ELF_LINK_NON_GOT_REF
));
1694 /* This is a reference to a symbol defined by a dynamic object which
1695 is not a function. */
1697 /* If we are creating a shared library, we must presume that the
1698 only references to the symbol are via the global offset table.
1699 For such cases we need not do anything here; the relocations will
1700 be handled correctly by relocate_section. */
1704 /* If there are no references to this symbol that do not use the
1705 GOT, we don't need to generate a copy reloc. */
1706 if ((h
->elf_link_hash_flags
& ELF_LINK_NON_GOT_REF
) == 0)
1709 if (ELIMINATE_COPY_RELOCS
)
1711 struct elf32_hppa_link_hash_entry
*eh
;
1712 struct elf32_hppa_dyn_reloc_entry
*p
;
1714 eh
= (struct elf32_hppa_link_hash_entry
*) h
;
1715 for (p
= eh
->dyn_relocs
; p
!= NULL
; p
= p
->next
)
1717 s
= p
->sec
->output_section
;
1718 if (s
!= NULL
&& (s
->flags
& SEC_READONLY
) != 0)
1722 /* If we didn't find any dynamic relocs in read-only sections, then
1723 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
1726 h
->elf_link_hash_flags
&= ~ELF_LINK_NON_GOT_REF
;
1731 /* We must allocate the symbol in our .dynbss section, which will
1732 become part of the .bss section of the executable. There will be
1733 an entry for this symbol in the .dynsym section. The dynamic
1734 object will contain position independent code, so all references
1735 from the dynamic object to this symbol will go through the global
1736 offset table. The dynamic linker will use the .dynsym entry to
1737 determine the address it must put in the global offset table, so
1738 both the dynamic object and the regular object will refer to the
1739 same memory location for the variable. */
1741 htab
= hppa_link_hash_table (info
);
1743 /* We must generate a COPY reloc to tell the dynamic linker to
1744 copy the initial value out of the dynamic object and into the
1745 runtime process image. */
1746 if ((h
->root
.u
.def
.section
->flags
& SEC_ALLOC
) != 0)
1748 htab
->srelbss
->_raw_size
+= sizeof (Elf32_External_Rela
);
1749 h
->elf_link_hash_flags
|= ELF_LINK_HASH_NEEDS_COPY
;
1752 /* We need to figure out the alignment required for this symbol. I
1753 have no idea how other ELF linkers handle this. */
1755 power_of_two
= bfd_log2 (h
->size
);
1756 if (power_of_two
> 3)
1759 /* Apply the required alignment. */
1761 s
->_raw_size
= BFD_ALIGN (s
->_raw_size
,
1762 (bfd_size_type
) (1 << power_of_two
));
1763 if (power_of_two
> bfd_get_section_alignment (htab
->elf
.dynobj
, s
))
1765 if (! bfd_set_section_alignment (htab
->elf
.dynobj
, s
, power_of_two
))
1769 /* Define the symbol as being at this point in the section. */
1770 h
->root
.u
.def
.section
= s
;
1771 h
->root
.u
.def
.value
= s
->_raw_size
;
1773 /* Increment the section size to make room for the symbol. */
1774 s
->_raw_size
+= h
->size
;
1779 /* Allocate space in the .plt for entries that won't have relocations.
1780 ie. plabel entries. */
1783 allocate_plt_static (struct elf_link_hash_entry
*h
, void *inf
)
1785 struct bfd_link_info
*info
;
1786 struct elf32_hppa_link_hash_table
*htab
;
1789 if (h
->root
.type
== bfd_link_hash_indirect
)
1792 if (h
->root
.type
== bfd_link_hash_warning
)
1793 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
1796 htab
= hppa_link_hash_table (info
);
1797 if (htab
->elf
.dynamic_sections_created
1798 && h
->plt
.refcount
> 0)
1800 /* Make sure this symbol is output as a dynamic symbol.
1801 Undefined weak syms won't yet be marked as dynamic. */
1802 if (h
->dynindx
== -1
1803 && (h
->elf_link_hash_flags
& ELF_LINK_FORCED_LOCAL
) == 0
1804 && h
->type
!= STT_PARISC_MILLI
)
1806 if (! bfd_elf32_link_record_dynamic_symbol (info
, h
))
1810 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, info
, h
))
1812 /* Allocate these later. From this point on, h->plabel
1813 means that the plt entry is only used by a plabel.
1814 We'll be using a normal plt entry for this symbol, so
1815 clear the plabel indicator. */
1816 ((struct elf32_hppa_link_hash_entry
*) h
)->plabel
= 0;
1818 else if (((struct elf32_hppa_link_hash_entry
*) h
)->plabel
)
1820 /* Make an entry in the .plt section for plabel references
1821 that won't have a .plt entry for other reasons. */
1823 h
->plt
.offset
= s
->_raw_size
;
1824 s
->_raw_size
+= PLT_ENTRY_SIZE
;
1828 /* No .plt entry needed. */
1829 h
->plt
.offset
= (bfd_vma
) -1;
1830 h
->elf_link_hash_flags
&= ~ELF_LINK_HASH_NEEDS_PLT
;
1835 h
->plt
.offset
= (bfd_vma
) -1;
1836 h
->elf_link_hash_flags
&= ~ELF_LINK_HASH_NEEDS_PLT
;
1842 /* Allocate space in .plt, .got and associated reloc sections for
1846 allocate_dynrelocs (struct elf_link_hash_entry
*h
, void *inf
)
1848 struct bfd_link_info
*info
;
1849 struct elf32_hppa_link_hash_table
*htab
;
1851 struct elf32_hppa_link_hash_entry
*eh
;
1852 struct elf32_hppa_dyn_reloc_entry
*p
;
1854 if (h
->root
.type
== bfd_link_hash_indirect
)
1857 if (h
->root
.type
== bfd_link_hash_warning
)
1858 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
1861 htab
= hppa_link_hash_table (info
);
1862 if (htab
->elf
.dynamic_sections_created
1863 && h
->plt
.offset
!= (bfd_vma
) -1
1864 && !((struct elf32_hppa_link_hash_entry
*) h
)->plabel
)
1866 /* Make an entry in the .plt section. */
1868 h
->plt
.offset
= s
->_raw_size
;
1869 s
->_raw_size
+= PLT_ENTRY_SIZE
;
1871 /* We also need to make an entry in the .rela.plt section. */
1872 htab
->srelplt
->_raw_size
+= sizeof (Elf32_External_Rela
);
1873 htab
->need_plt_stub
= 1;
1876 if (h
->got
.refcount
> 0)
1878 /* Make sure this symbol is output as a dynamic symbol.
1879 Undefined weak syms won't yet be marked as dynamic. */
1880 if (h
->dynindx
== -1
1881 && (h
->elf_link_hash_flags
& ELF_LINK_FORCED_LOCAL
) == 0
1882 && h
->type
!= STT_PARISC_MILLI
)
1884 if (! bfd_elf32_link_record_dynamic_symbol (info
, h
))
1889 h
->got
.offset
= s
->_raw_size
;
1890 s
->_raw_size
+= GOT_ENTRY_SIZE
;
1891 if (htab
->elf
.dynamic_sections_created
1893 || (h
->dynindx
!= -1
1894 && h
->elf_link_hash_flags
& ELF_LINK_FORCED_LOCAL
) == 0))
1896 htab
->srelgot
->_raw_size
+= sizeof (Elf32_External_Rela
);
1900 h
->got
.offset
= (bfd_vma
) -1;
1902 eh
= (struct elf32_hppa_link_hash_entry
*) h
;
1903 if (eh
->dyn_relocs
== NULL
)
1906 /* If this is a -Bsymbolic shared link, then we need to discard all
1907 space allocated for dynamic pc-relative relocs against symbols
1908 defined in a regular object. For the normal shared case, discard
1909 space for relocs that have become local due to symbol visibility
1913 #if RELATIVE_DYNRELOCS
1914 if (SYMBOL_CALLS_LOCAL (info
, h
))
1916 struct elf32_hppa_dyn_reloc_entry
**pp
;
1918 for (pp
= &eh
->dyn_relocs
; (p
= *pp
) != NULL
; )
1920 p
->count
-= p
->relative_count
;
1921 p
->relative_count
= 0;
1930 /* Also discard relocs on undefined weak syms with non-default
1932 if (ELF_ST_VISIBILITY (h
->other
) != STV_DEFAULT
1933 && h
->root
.type
== bfd_link_hash_undefweak
)
1934 eh
->dyn_relocs
= NULL
;
1938 /* For the non-shared case, discard space for relocs against
1939 symbols which turn out to need copy relocs or are not
1941 if ((h
->elf_link_hash_flags
& ELF_LINK_NON_GOT_REF
) == 0
1942 && ((ELIMINATE_COPY_RELOCS
1943 && (h
->elf_link_hash_flags
& ELF_LINK_HASH_DEF_DYNAMIC
) != 0
1944 && (h
->elf_link_hash_flags
& ELF_LINK_HASH_DEF_REGULAR
) == 0)
1945 || (htab
->elf
.dynamic_sections_created
1946 && (h
->root
.type
== bfd_link_hash_undefweak
1947 || h
->root
.type
== bfd_link_hash_undefined
))))
1949 /* Make sure this symbol is output as a dynamic symbol.
1950 Undefined weak syms won't yet be marked as dynamic. */
1951 if (h
->dynindx
== -1
1952 && (h
->elf_link_hash_flags
& ELF_LINK_FORCED_LOCAL
) == 0
1953 && h
->type
!= STT_PARISC_MILLI
)
1955 if (! bfd_elf32_link_record_dynamic_symbol (info
, h
))
1959 /* If that succeeded, we know we'll be keeping all the
1961 if (h
->dynindx
!= -1)
1965 eh
->dyn_relocs
= NULL
;
1971 /* Finally, allocate space. */
1972 for (p
= eh
->dyn_relocs
; p
!= NULL
; p
= p
->next
)
1974 asection
*sreloc
= elf_section_data (p
->sec
)->sreloc
;
1975 sreloc
->_raw_size
+= p
->count
* sizeof (Elf32_External_Rela
);
1981 /* This function is called via elf_link_hash_traverse to force
1982 millicode symbols local so they do not end up as globals in the
1983 dynamic symbol table. We ought to be able to do this in
1984 adjust_dynamic_symbol, but our adjust_dynamic_symbol is not called
1985 for all dynamic symbols. Arguably, this is a bug in
1986 elf_adjust_dynamic_symbol. */
1989 clobber_millicode_symbols (struct elf_link_hash_entry
*h
,
1990 struct bfd_link_info
*info
)
1992 if (h
->root
.type
== bfd_link_hash_warning
)
1993 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
1995 if (h
->type
== STT_PARISC_MILLI
1996 && (h
->elf_link_hash_flags
& ELF_LINK_FORCED_LOCAL
) == 0)
1998 elf32_hppa_hide_symbol (info
, h
, TRUE
);
2003 /* Find any dynamic relocs that apply to read-only sections. */
2006 readonly_dynrelocs (struct elf_link_hash_entry
*h
, void *inf
)
2008 struct elf32_hppa_link_hash_entry
*eh
;
2009 struct elf32_hppa_dyn_reloc_entry
*p
;
2011 if (h
->root
.type
== bfd_link_hash_warning
)
2012 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
2014 eh
= (struct elf32_hppa_link_hash_entry
*) h
;
2015 for (p
= eh
->dyn_relocs
; p
!= NULL
; p
= p
->next
)
2017 asection
*s
= p
->sec
->output_section
;
2019 if (s
!= NULL
&& (s
->flags
& SEC_READONLY
) != 0)
2021 struct bfd_link_info
*info
= inf
;
2023 info
->flags
|= DF_TEXTREL
;
2025 /* Not an error, just cut short the traversal. */
2032 /* Set the sizes of the dynamic sections. */
2035 elf32_hppa_size_dynamic_sections (bfd
*output_bfd ATTRIBUTE_UNUSED
,
2036 struct bfd_link_info
*info
)
2038 struct elf32_hppa_link_hash_table
*htab
;
2044 htab
= hppa_link_hash_table (info
);
2045 dynobj
= htab
->elf
.dynobj
;
2049 if (htab
->elf
.dynamic_sections_created
)
2051 /* Set the contents of the .interp section to the interpreter. */
2052 if (info
->executable
)
2054 s
= bfd_get_section_by_name (dynobj
, ".interp");
2057 s
->_raw_size
= sizeof ELF_DYNAMIC_INTERPRETER
;
2058 s
->contents
= (unsigned char *) ELF_DYNAMIC_INTERPRETER
;
2061 /* Force millicode symbols local. */
2062 elf_link_hash_traverse (&htab
->elf
,
2063 clobber_millicode_symbols
,
2067 /* Set up .got and .plt offsets for local syms, and space for local
2069 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link_next
)
2071 bfd_signed_vma
*local_got
;
2072 bfd_signed_vma
*end_local_got
;
2073 bfd_signed_vma
*local_plt
;
2074 bfd_signed_vma
*end_local_plt
;
2075 bfd_size_type locsymcount
;
2076 Elf_Internal_Shdr
*symtab_hdr
;
2079 if (bfd_get_flavour (ibfd
) != bfd_target_elf_flavour
)
2082 for (s
= ibfd
->sections
; s
!= NULL
; s
= s
->next
)
2084 struct elf32_hppa_dyn_reloc_entry
*p
;
2086 for (p
= ((struct elf32_hppa_dyn_reloc_entry
*)
2087 elf_section_data (s
)->local_dynrel
);
2091 if (!bfd_is_abs_section (p
->sec
)
2092 && bfd_is_abs_section (p
->sec
->output_section
))
2094 /* Input section has been discarded, either because
2095 it is a copy of a linkonce section or due to
2096 linker script /DISCARD/, so we'll be discarding
2099 else if (p
->count
!= 0)
2101 srel
= elf_section_data (p
->sec
)->sreloc
;
2102 srel
->_raw_size
+= p
->count
* sizeof (Elf32_External_Rela
);
2103 if ((p
->sec
->output_section
->flags
& SEC_READONLY
) != 0)
2104 info
->flags
|= DF_TEXTREL
;
2109 local_got
= elf_local_got_refcounts (ibfd
);
2113 symtab_hdr
= &elf_tdata (ibfd
)->symtab_hdr
;
2114 locsymcount
= symtab_hdr
->sh_info
;
2115 end_local_got
= local_got
+ locsymcount
;
2117 srel
= htab
->srelgot
;
2118 for (; local_got
< end_local_got
; ++local_got
)
2122 *local_got
= s
->_raw_size
;
2123 s
->_raw_size
+= GOT_ENTRY_SIZE
;
2125 srel
->_raw_size
+= sizeof (Elf32_External_Rela
);
2128 *local_got
= (bfd_vma
) -1;
2131 local_plt
= end_local_got
;
2132 end_local_plt
= local_plt
+ locsymcount
;
2133 if (! htab
->elf
.dynamic_sections_created
)
2135 /* Won't be used, but be safe. */
2136 for (; local_plt
< end_local_plt
; ++local_plt
)
2137 *local_plt
= (bfd_vma
) -1;
2142 srel
= htab
->srelplt
;
2143 for (; local_plt
< end_local_plt
; ++local_plt
)
2147 *local_plt
= s
->_raw_size
;
2148 s
->_raw_size
+= PLT_ENTRY_SIZE
;
2150 srel
->_raw_size
+= sizeof (Elf32_External_Rela
);
2153 *local_plt
= (bfd_vma
) -1;
2158 /* Do all the .plt entries without relocs first. The dynamic linker
2159 uses the last .plt reloc to find the end of the .plt (and hence
2160 the start of the .got) for lazy linking. */
2161 elf_link_hash_traverse (&htab
->elf
, allocate_plt_static
, info
);
2163 /* Allocate global sym .plt and .got entries, and space for global
2164 sym dynamic relocs. */
2165 elf_link_hash_traverse (&htab
->elf
, allocate_dynrelocs
, info
);
2167 /* The check_relocs and adjust_dynamic_symbol entry points have
2168 determined the sizes of the various dynamic sections. Allocate
2171 for (s
= dynobj
->sections
; s
!= NULL
; s
= s
->next
)
2173 if ((s
->flags
& SEC_LINKER_CREATED
) == 0)
2176 if (s
== htab
->splt
)
2178 if (htab
->need_plt_stub
)
2180 /* Make space for the plt stub at the end of the .plt
2181 section. We want this stub right at the end, up
2182 against the .got section. */
2183 int gotalign
= bfd_section_alignment (dynobj
, htab
->sgot
);
2184 int pltalign
= bfd_section_alignment (dynobj
, s
);
2187 if (gotalign
> pltalign
)
2188 bfd_set_section_alignment (dynobj
, s
, gotalign
);
2189 mask
= ((bfd_size_type
) 1 << gotalign
) - 1;
2190 s
->_raw_size
= (s
->_raw_size
+ sizeof (plt_stub
) + mask
) & ~mask
;
2193 else if (s
== htab
->sgot
)
2195 else if (strncmp (bfd_get_section_name (dynobj
, s
), ".rela", 5) == 0)
2197 if (s
->_raw_size
!= 0)
2199 /* Remember whether there are any reloc sections other
2201 if (s
!= htab
->srelplt
)
2204 /* We use the reloc_count field as a counter if we need
2205 to copy relocs into the output file. */
2211 /* It's not one of our sections, so don't allocate space. */
2215 if (s
->_raw_size
== 0)
2217 /* If we don't need this section, strip it from the
2218 output file. This is mostly to handle .rela.bss and
2219 .rela.plt. We must create both sections in
2220 create_dynamic_sections, because they must be created
2221 before the linker maps input sections to output
2222 sections. The linker does that before
2223 adjust_dynamic_symbol is called, and it is that
2224 function which decides whether anything needs to go
2225 into these sections. */
2226 _bfd_strip_section_from_output (info
, s
);
2230 /* Allocate memory for the section contents. Zero it, because
2231 we may not fill in all the reloc sections. */
2232 s
->contents
= bfd_zalloc (dynobj
, s
->_raw_size
);
2233 if (s
->contents
== NULL
&& s
->_raw_size
!= 0)
2237 if (htab
->elf
.dynamic_sections_created
)
2239 /* Like IA-64 and HPPA64, always create a DT_PLTGOT. It
2240 actually has nothing to do with the PLT, it is how we
2241 communicate the LTP value of a load module to the dynamic
2243 #define add_dynamic_entry(TAG, VAL) \
2244 bfd_elf32_add_dynamic_entry (info, (bfd_vma) (TAG), (bfd_vma) (VAL))
2246 if (!add_dynamic_entry (DT_PLTGOT
, 0))
2249 /* Add some entries to the .dynamic section. We fill in the
2250 values later, in elf32_hppa_finish_dynamic_sections, but we
2251 must add the entries now so that we get the correct size for
2252 the .dynamic section. The DT_DEBUG entry is filled in by the
2253 dynamic linker and used by the debugger. */
2256 if (!add_dynamic_entry (DT_DEBUG
, 0))
2260 if (htab
->srelplt
->_raw_size
!= 0)
2262 if (!add_dynamic_entry (DT_PLTRELSZ
, 0)
2263 || !add_dynamic_entry (DT_PLTREL
, DT_RELA
)
2264 || !add_dynamic_entry (DT_JMPREL
, 0))
2270 if (!add_dynamic_entry (DT_RELA
, 0)
2271 || !add_dynamic_entry (DT_RELASZ
, 0)
2272 || !add_dynamic_entry (DT_RELAENT
, sizeof (Elf32_External_Rela
)))
2275 /* If any dynamic relocs apply to a read-only section,
2276 then we need a DT_TEXTREL entry. */
2277 if ((info
->flags
& DF_TEXTREL
) == 0)
2278 elf_link_hash_traverse (&htab
->elf
, readonly_dynrelocs
, info
);
2280 if ((info
->flags
& DF_TEXTREL
) != 0)
2282 if (!add_dynamic_entry (DT_TEXTREL
, 0))
2287 #undef add_dynamic_entry
2292 /* External entry points for sizing and building linker stubs. */
2294 /* Set up various things so that we can make a list of input sections
2295 for each output section included in the link. Returns -1 on error,
2296 0 when no stubs will be needed, and 1 on success. */
2299 elf32_hppa_setup_section_lists (bfd
*output_bfd
, struct bfd_link_info
*info
)
2302 unsigned int bfd_count
;
2303 int top_id
, top_index
;
2305 asection
**input_list
, **list
;
2307 struct elf32_hppa_link_hash_table
*htab
= hppa_link_hash_table (info
);
2309 /* Count the number of input BFDs and find the top input section id. */
2310 for (input_bfd
= info
->input_bfds
, bfd_count
= 0, top_id
= 0;
2312 input_bfd
= input_bfd
->link_next
)
2315 for (section
= input_bfd
->sections
;
2317 section
= section
->next
)
2319 if (top_id
< section
->id
)
2320 top_id
= section
->id
;
2323 htab
->bfd_count
= bfd_count
;
2325 amt
= sizeof (struct map_stub
) * (top_id
+ 1);
2326 htab
->stub_group
= bfd_zmalloc (amt
);
2327 if (htab
->stub_group
== NULL
)
2330 /* We can't use output_bfd->section_count here to find the top output
2331 section index as some sections may have been removed, and
2332 _bfd_strip_section_from_output doesn't renumber the indices. */
2333 for (section
= output_bfd
->sections
, top_index
= 0;
2335 section
= section
->next
)
2337 if (top_index
< section
->index
)
2338 top_index
= section
->index
;
2341 htab
->top_index
= top_index
;
2342 amt
= sizeof (asection
*) * (top_index
+ 1);
2343 input_list
= bfd_malloc (amt
);
2344 htab
->input_list
= input_list
;
2345 if (input_list
== NULL
)
2348 /* For sections we aren't interested in, mark their entries with a
2349 value we can check later. */
2350 list
= input_list
+ top_index
;
2352 *list
= bfd_abs_section_ptr
;
2353 while (list
-- != input_list
);
2355 for (section
= output_bfd
->sections
;
2357 section
= section
->next
)
2359 if ((section
->flags
& SEC_CODE
) != 0)
2360 input_list
[section
->index
] = NULL
;
2366 /* The linker repeatedly calls this function for each input section,
2367 in the order that input sections are linked into output sections.
2368 Build lists of input sections to determine groupings between which
2369 we may insert linker stubs. */
2372 elf32_hppa_next_input_section (struct bfd_link_info
*info
, asection
*isec
)
2374 struct elf32_hppa_link_hash_table
*htab
= hppa_link_hash_table (info
);
2376 if (isec
->output_section
->index
<= htab
->top_index
)
2378 asection
**list
= htab
->input_list
+ isec
->output_section
->index
;
2379 if (*list
!= bfd_abs_section_ptr
)
2381 /* Steal the link_sec pointer for our list. */
2382 #define PREV_SEC(sec) (htab->stub_group[(sec)->id].link_sec)
2383 /* This happens to make the list in reverse order,
2384 which is what we want. */
2385 PREV_SEC (isec
) = *list
;
2391 /* See whether we can group stub sections together. Grouping stub
2392 sections may result in fewer stubs. More importantly, we need to
2393 put all .init* and .fini* stubs at the beginning of the .init or
2394 .fini output sections respectively, because glibc splits the
2395 _init and _fini functions into multiple parts. Putting a stub in
2396 the middle of a function is not a good idea. */
2399 group_sections (struct elf32_hppa_link_hash_table
*htab
,
2400 bfd_size_type stub_group_size
,
2401 bfd_boolean stubs_always_before_branch
)
2403 asection
**list
= htab
->input_list
+ htab
->top_index
;
2406 asection
*tail
= *list
;
2407 if (tail
== bfd_abs_section_ptr
)
2409 while (tail
!= NULL
)
2413 bfd_size_type total
;
2414 bfd_boolean big_sec
;
2417 if (tail
->_cooked_size
)
2418 total
= tail
->_cooked_size
;
2420 total
= tail
->_raw_size
;
2421 big_sec
= total
>= stub_group_size
;
2423 while ((prev
= PREV_SEC (curr
)) != NULL
2424 && ((total
+= curr
->output_offset
- prev
->output_offset
)
2428 /* OK, the size from the start of CURR to the end is less
2429 than 240000 bytes and thus can be handled by one stub
2430 section. (or the tail section is itself larger than
2431 240000 bytes, in which case we may be toast.)
2432 We should really be keeping track of the total size of
2433 stubs added here, as stubs contribute to the final output
2434 section size. That's a little tricky, and this way will
2435 only break if stubs added total more than 22144 bytes, or
2436 2768 long branch stubs. It seems unlikely for more than
2437 2768 different functions to be called, especially from
2438 code only 240000 bytes long. This limit used to be
2439 250000, but c++ code tends to generate lots of little
2440 functions, and sometimes violated the assumption. */
2443 prev
= PREV_SEC (tail
);
2444 /* Set up this stub group. */
2445 htab
->stub_group
[tail
->id
].link_sec
= curr
;
2447 while (tail
!= curr
&& (tail
= prev
) != NULL
);
2449 /* But wait, there's more! Input sections up to 240000
2450 bytes before the stub section can be handled by it too.
2451 Don't do this if we have a really large section after the
2452 stubs, as adding more stubs increases the chance that
2453 branches may not reach into the stub section. */
2454 if (!stubs_always_before_branch
&& !big_sec
)
2458 && ((total
+= tail
->output_offset
- prev
->output_offset
)
2462 prev
= PREV_SEC (tail
);
2463 htab
->stub_group
[tail
->id
].link_sec
= curr
;
2469 while (list
-- != htab
->input_list
);
2470 free (htab
->input_list
);
2474 /* Read in all local syms for all input bfds, and create hash entries
2475 for export stubs if we are building a multi-subspace shared lib.
2476 Returns -1 on error, 1 if export stubs created, 0 otherwise. */
2479 get_local_syms (bfd
*output_bfd
, bfd
*input_bfd
, struct bfd_link_info
*info
)
2481 unsigned int bfd_indx
;
2482 Elf_Internal_Sym
*local_syms
, **all_local_syms
;
2483 int stub_changed
= 0;
2484 struct elf32_hppa_link_hash_table
*htab
= hppa_link_hash_table (info
);
2486 /* We want to read in symbol extension records only once. To do this
2487 we need to read in the local symbols in parallel and save them for
2488 later use; so hold pointers to the local symbols in an array. */
2489 bfd_size_type amt
= sizeof (Elf_Internal_Sym
*) * htab
->bfd_count
;
2490 all_local_syms
= bfd_zmalloc (amt
);
2491 htab
->all_local_syms
= all_local_syms
;
2492 if (all_local_syms
== NULL
)
2495 /* Walk over all the input BFDs, swapping in local symbols.
2496 If we are creating a shared library, create hash entries for the
2500 input_bfd
= input_bfd
->link_next
, bfd_indx
++)
2502 Elf_Internal_Shdr
*symtab_hdr
;
2504 /* We'll need the symbol table in a second. */
2505 symtab_hdr
= &elf_tdata (input_bfd
)->symtab_hdr
;
2506 if (symtab_hdr
->sh_info
== 0)
2509 /* We need an array of the local symbols attached to the input bfd. */
2510 local_syms
= (Elf_Internal_Sym
*) symtab_hdr
->contents
;
2511 if (local_syms
== NULL
)
2513 local_syms
= bfd_elf_get_elf_syms (input_bfd
, symtab_hdr
,
2514 symtab_hdr
->sh_info
, 0,
2516 /* Cache them for elf_link_input_bfd. */
2517 symtab_hdr
->contents
= (unsigned char *) local_syms
;
2519 if (local_syms
== NULL
)
2522 all_local_syms
[bfd_indx
] = local_syms
;
2524 if (info
->shared
&& htab
->multi_subspace
)
2526 struct elf_link_hash_entry
**sym_hashes
;
2527 struct elf_link_hash_entry
**end_hashes
;
2528 unsigned int symcount
;
2530 symcount
= (symtab_hdr
->sh_size
/ sizeof (Elf32_External_Sym
)
2531 - symtab_hdr
->sh_info
);
2532 sym_hashes
= elf_sym_hashes (input_bfd
);
2533 end_hashes
= sym_hashes
+ symcount
;
2535 /* Look through the global syms for functions; We need to
2536 build export stubs for all globally visible functions. */
2537 for (; sym_hashes
< end_hashes
; sym_hashes
++)
2539 struct elf32_hppa_link_hash_entry
*hash
;
2541 hash
= (struct elf32_hppa_link_hash_entry
*) *sym_hashes
;
2543 while (hash
->elf
.root
.type
== bfd_link_hash_indirect
2544 || hash
->elf
.root
.type
== bfd_link_hash_warning
)
2545 hash
= ((struct elf32_hppa_link_hash_entry
*)
2546 hash
->elf
.root
.u
.i
.link
);
2548 /* At this point in the link, undefined syms have been
2549 resolved, so we need to check that the symbol was
2550 defined in this BFD. */
2551 if ((hash
->elf
.root
.type
== bfd_link_hash_defined
2552 || hash
->elf
.root
.type
== bfd_link_hash_defweak
)
2553 && hash
->elf
.type
== STT_FUNC
2554 && hash
->elf
.root
.u
.def
.section
->output_section
!= NULL
2555 && (hash
->elf
.root
.u
.def
.section
->output_section
->owner
2557 && hash
->elf
.root
.u
.def
.section
->owner
== input_bfd
2558 && (hash
->elf
.elf_link_hash_flags
& ELF_LINK_HASH_DEF_REGULAR
)
2559 && !(hash
->elf
.elf_link_hash_flags
& ELF_LINK_FORCED_LOCAL
)
2560 && ELF_ST_VISIBILITY (hash
->elf
.other
) == STV_DEFAULT
)
2563 const char *stub_name
;
2564 struct elf32_hppa_stub_hash_entry
*stub_entry
;
2566 sec
= hash
->elf
.root
.u
.def
.section
;
2567 stub_name
= hash
->elf
.root
.root
.string
;
2568 stub_entry
= hppa_stub_hash_lookup (&htab
->stub_hash_table
,
2571 if (stub_entry
== NULL
)
2573 stub_entry
= hppa_add_stub (stub_name
, sec
, htab
);
2577 stub_entry
->target_value
= hash
->elf
.root
.u
.def
.value
;
2578 stub_entry
->target_section
= hash
->elf
.root
.u
.def
.section
;
2579 stub_entry
->stub_type
= hppa_stub_export
;
2580 stub_entry
->h
= hash
;
2585 (*_bfd_error_handler
) (_("%s: duplicate export stub %s"),
2586 bfd_archive_filename (input_bfd
),
2594 return stub_changed
;
2597 /* Determine and set the size of the stub section for a final link.
2599 The basic idea here is to examine all the relocations looking for
2600 PC-relative calls to a target that is unreachable with a "bl"
2604 elf32_hppa_size_stubs
2605 (bfd
*output_bfd
, bfd
*stub_bfd
, struct bfd_link_info
*info
,
2606 bfd_boolean multi_subspace
, bfd_signed_vma group_size
,
2607 asection
* (*add_stub_section
) (const char *, asection
*),
2608 void (*layout_sections_again
) (void))
2610 bfd_size_type stub_group_size
;
2611 bfd_boolean stubs_always_before_branch
;
2612 bfd_boolean stub_changed
;
2613 struct elf32_hppa_link_hash_table
*htab
= hppa_link_hash_table (info
);
2615 /* Stash our params away. */
2616 htab
->stub_bfd
= stub_bfd
;
2617 htab
->multi_subspace
= multi_subspace
;
2618 htab
->add_stub_section
= add_stub_section
;
2619 htab
->layout_sections_again
= layout_sections_again
;
2620 stubs_always_before_branch
= group_size
< 0;
2622 stub_group_size
= -group_size
;
2624 stub_group_size
= group_size
;
2625 if (stub_group_size
== 1)
2627 /* Default values. */
2628 if (stubs_always_before_branch
)
2630 stub_group_size
= 7680000;
2631 if (htab
->has_17bit_branch
|| htab
->multi_subspace
)
2632 stub_group_size
= 240000;
2633 if (htab
->has_12bit_branch
)
2634 stub_group_size
= 7500;
2638 stub_group_size
= 6971392;
2639 if (htab
->has_17bit_branch
|| htab
->multi_subspace
)
2640 stub_group_size
= 217856;
2641 if (htab
->has_12bit_branch
)
2642 stub_group_size
= 6808;
2646 group_sections (htab
, stub_group_size
, stubs_always_before_branch
);
2648 switch (get_local_syms (output_bfd
, info
->input_bfds
, info
))
2651 if (htab
->all_local_syms
)
2652 goto error_ret_free_local
;
2656 stub_changed
= FALSE
;
2660 stub_changed
= TRUE
;
2667 unsigned int bfd_indx
;
2670 for (input_bfd
= info
->input_bfds
, bfd_indx
= 0;
2672 input_bfd
= input_bfd
->link_next
, bfd_indx
++)
2674 Elf_Internal_Shdr
*symtab_hdr
;
2676 Elf_Internal_Sym
*local_syms
;
2678 /* We'll need the symbol table in a second. */
2679 symtab_hdr
= &elf_tdata (input_bfd
)->symtab_hdr
;
2680 if (symtab_hdr
->sh_info
== 0)
2683 local_syms
= htab
->all_local_syms
[bfd_indx
];
2685 /* Walk over each section attached to the input bfd. */
2686 for (section
= input_bfd
->sections
;
2688 section
= section
->next
)
2690 Elf_Internal_Rela
*internal_relocs
, *irelaend
, *irela
;
2692 /* If there aren't any relocs, then there's nothing more
2694 if ((section
->flags
& SEC_RELOC
) == 0
2695 || section
->reloc_count
== 0)
2698 /* If this section is a link-once section that will be
2699 discarded, then don't create any stubs. */
2700 if (section
->output_section
== NULL
2701 || section
->output_section
->owner
!= output_bfd
)
2704 /* Get the relocs. */
2706 = _bfd_elf_link_read_relocs (input_bfd
, section
, NULL
, NULL
,
2708 if (internal_relocs
== NULL
)
2709 goto error_ret_free_local
;
2711 /* Now examine each relocation. */
2712 irela
= internal_relocs
;
2713 irelaend
= irela
+ section
->reloc_count
;
2714 for (; irela
< irelaend
; irela
++)
2716 unsigned int r_type
, r_indx
;
2717 enum elf32_hppa_stub_type stub_type
;
2718 struct elf32_hppa_stub_hash_entry
*stub_entry
;
2721 bfd_vma destination
;
2722 struct elf32_hppa_link_hash_entry
*hash
;
2724 const asection
*id_sec
;
2726 r_type
= ELF32_R_TYPE (irela
->r_info
);
2727 r_indx
= ELF32_R_SYM (irela
->r_info
);
2729 if (r_type
>= (unsigned int) R_PARISC_UNIMPLEMENTED
)
2731 bfd_set_error (bfd_error_bad_value
);
2732 error_ret_free_internal
:
2733 if (elf_section_data (section
)->relocs
== NULL
)
2734 free (internal_relocs
);
2735 goto error_ret_free_local
;
2738 /* Only look for stubs on call instructions. */
2739 if (r_type
!= (unsigned int) R_PARISC_PCREL12F
2740 && r_type
!= (unsigned int) R_PARISC_PCREL17F
2741 && r_type
!= (unsigned int) R_PARISC_PCREL22F
)
2744 /* Now determine the call target, its name, value,
2750 if (r_indx
< symtab_hdr
->sh_info
)
2752 /* It's a local symbol. */
2753 Elf_Internal_Sym
*sym
;
2754 Elf_Internal_Shdr
*hdr
;
2756 sym
= local_syms
+ r_indx
;
2757 hdr
= elf_elfsections (input_bfd
)[sym
->st_shndx
];
2758 sym_sec
= hdr
->bfd_section
;
2759 if (ELF_ST_TYPE (sym
->st_info
) != STT_SECTION
)
2760 sym_value
= sym
->st_value
;
2761 destination
= (sym_value
+ irela
->r_addend
2762 + sym_sec
->output_offset
2763 + sym_sec
->output_section
->vma
);
2767 /* It's an external symbol. */
2770 e_indx
= r_indx
- symtab_hdr
->sh_info
;
2771 hash
= ((struct elf32_hppa_link_hash_entry
*)
2772 elf_sym_hashes (input_bfd
)[e_indx
]);
2774 while (hash
->elf
.root
.type
== bfd_link_hash_indirect
2775 || hash
->elf
.root
.type
== bfd_link_hash_warning
)
2776 hash
= ((struct elf32_hppa_link_hash_entry
*)
2777 hash
->elf
.root
.u
.i
.link
);
2779 if (hash
->elf
.root
.type
== bfd_link_hash_defined
2780 || hash
->elf
.root
.type
== bfd_link_hash_defweak
)
2782 sym_sec
= hash
->elf
.root
.u
.def
.section
;
2783 sym_value
= hash
->elf
.root
.u
.def
.value
;
2784 if (sym_sec
->output_section
!= NULL
)
2785 destination
= (sym_value
+ irela
->r_addend
2786 + sym_sec
->output_offset
2787 + sym_sec
->output_section
->vma
);
2789 else if (hash
->elf
.root
.type
== bfd_link_hash_undefweak
)
2794 else if (hash
->elf
.root
.type
== bfd_link_hash_undefined
)
2796 if (! (info
->unresolved_syms_in_objects
== RM_IGNORE
2797 && (ELF_ST_VISIBILITY (hash
->elf
.other
)
2799 && hash
->elf
.type
!= STT_PARISC_MILLI
))
2804 bfd_set_error (bfd_error_bad_value
);
2805 goto error_ret_free_internal
;
2809 /* Determine what (if any) linker stub is needed. */
2810 stub_type
= hppa_type_of_stub (section
, irela
, hash
,
2812 if (stub_type
== hppa_stub_none
)
2815 /* Support for grouping stub sections. */
2816 id_sec
= htab
->stub_group
[section
->id
].link_sec
;
2818 /* Get the name of this stub. */
2819 stub_name
= hppa_stub_name (id_sec
, sym_sec
, hash
, irela
);
2821 goto error_ret_free_internal
;
2823 stub_entry
= hppa_stub_hash_lookup (&htab
->stub_hash_table
,
2826 if (stub_entry
!= NULL
)
2828 /* The proper stub has already been created. */
2833 stub_entry
= hppa_add_stub (stub_name
, section
, htab
);
2834 if (stub_entry
== NULL
)
2837 goto error_ret_free_internal
;
2840 stub_entry
->target_value
= sym_value
;
2841 stub_entry
->target_section
= sym_sec
;
2842 stub_entry
->stub_type
= stub_type
;
2845 if (stub_type
== hppa_stub_import
)
2846 stub_entry
->stub_type
= hppa_stub_import_shared
;
2847 else if (stub_type
== hppa_stub_long_branch
)
2848 stub_entry
->stub_type
= hppa_stub_long_branch_shared
;
2850 stub_entry
->h
= hash
;
2851 stub_changed
= TRUE
;
2854 /* We're done with the internal relocs, free them. */
2855 if (elf_section_data (section
)->relocs
== NULL
)
2856 free (internal_relocs
);
2863 /* OK, we've added some stubs. Find out the new size of the
2865 for (stub_sec
= htab
->stub_bfd
->sections
;
2867 stub_sec
= stub_sec
->next
)
2869 stub_sec
->_raw_size
= 0;
2870 stub_sec
->_cooked_size
= 0;
2873 bfd_hash_traverse (&htab
->stub_hash_table
, hppa_size_one_stub
, htab
);
2875 /* Ask the linker to do its stuff. */
2876 (*htab
->layout_sections_again
) ();
2877 stub_changed
= FALSE
;
2880 free (htab
->all_local_syms
);
2883 error_ret_free_local
:
2884 free (htab
->all_local_syms
);
2888 /* For a final link, this function is called after we have sized the
2889 stubs to provide a value for __gp. */
2892 elf32_hppa_set_gp (bfd
*abfd
, struct bfd_link_info
*info
)
2894 struct bfd_link_hash_entry
*h
;
2895 asection
*sec
= NULL
;
2897 struct elf32_hppa_link_hash_table
*htab
;
2899 htab
= hppa_link_hash_table (info
);
2900 h
= bfd_link_hash_lookup (&htab
->elf
.root
, "$global$", FALSE
, FALSE
, FALSE
);
2903 && (h
->type
== bfd_link_hash_defined
2904 || h
->type
== bfd_link_hash_defweak
))
2906 gp_val
= h
->u
.def
.value
;
2907 sec
= h
->u
.def
.section
;
2911 asection
*splt
= bfd_get_section_by_name (abfd
, ".plt");
2912 asection
*sgot
= bfd_get_section_by_name (abfd
, ".got");
2914 /* Choose to point our LTP at, in this order, one of .plt, .got,
2915 or .data, if these sections exist. In the case of choosing
2916 .plt try to make the LTP ideal for addressing anywhere in the
2917 .plt or .got with a 14 bit signed offset. Typically, the end
2918 of the .plt is the start of the .got, so choose .plt + 0x2000
2919 if either the .plt or .got is larger than 0x2000. If both
2920 the .plt and .got are smaller than 0x2000, choose the end of
2921 the .plt section. */
2925 gp_val
= sec
->_raw_size
;
2926 if (gp_val
> 0x2000 || (sgot
&& sgot
->_raw_size
> 0x2000))
2936 /* We know we don't have a .plt. If .got is large,
2938 if (sec
->_raw_size
> 0x2000)
2943 /* No .plt or .got. Who cares what the LTP is? */
2944 sec
= bfd_get_section_by_name (abfd
, ".data");
2950 h
->type
= bfd_link_hash_defined
;
2951 h
->u
.def
.value
= gp_val
;
2953 h
->u
.def
.section
= sec
;
2955 h
->u
.def
.section
= bfd_abs_section_ptr
;
2959 if (sec
!= NULL
&& sec
->output_section
!= NULL
)
2960 gp_val
+= sec
->output_section
->vma
+ sec
->output_offset
;
2962 elf_gp (abfd
) = gp_val
;
2966 /* Build all the stubs associated with the current output file. The
2967 stubs are kept in a hash table attached to the main linker hash
2968 table. We also set up the .plt entries for statically linked PIC
2969 functions here. This function is called via hppaelf_finish in the
2973 elf32_hppa_build_stubs (struct bfd_link_info
*info
)
2976 struct bfd_hash_table
*table
;
2977 struct elf32_hppa_link_hash_table
*htab
;
2979 htab
= hppa_link_hash_table (info
);
2981 for (stub_sec
= htab
->stub_bfd
->sections
;
2983 stub_sec
= stub_sec
->next
)
2987 /* Allocate memory to hold the linker stubs. */
2988 size
= stub_sec
->_raw_size
;
2989 stub_sec
->contents
= bfd_zalloc (htab
->stub_bfd
, size
);
2990 if (stub_sec
->contents
== NULL
&& size
!= 0)
2992 stub_sec
->_raw_size
= 0;
2995 /* Build the stubs as directed by the stub hash table. */
2996 table
= &htab
->stub_hash_table
;
2997 bfd_hash_traverse (table
, hppa_build_one_stub
, info
);
3002 /* Perform a final link. */
3005 elf32_hppa_final_link (bfd
*abfd
, struct bfd_link_info
*info
)
3007 /* Invoke the regular ELF linker to do all the work. */
3008 if (!bfd_elf32_bfd_final_link (abfd
, info
))
3011 /* If we're producing a final executable, sort the contents of the
3013 return elf_hppa_sort_unwind (abfd
);
3016 /* Record the lowest address for the data and text segments. */
3019 hppa_record_segment_addr (bfd
*abfd ATTRIBUTE_UNUSED
,
3023 struct elf32_hppa_link_hash_table
*htab
;
3025 htab
= (struct elf32_hppa_link_hash_table
*) data
;
3027 if ((section
->flags
& (SEC_ALLOC
| SEC_LOAD
)) == (SEC_ALLOC
| SEC_LOAD
))
3029 bfd_vma value
= section
->vma
- section
->filepos
;
3031 if ((section
->flags
& SEC_READONLY
) != 0)
3033 if (value
< htab
->text_segment_base
)
3034 htab
->text_segment_base
= value
;
3038 if (value
< htab
->data_segment_base
)
3039 htab
->data_segment_base
= value
;
3044 /* Perform a relocation as part of a final link. */
3046 static bfd_reloc_status_type
3047 final_link_relocate (asection
*input_section
,
3049 const Elf_Internal_Rela
*rel
,
3051 struct elf32_hppa_link_hash_table
*htab
,
3053 struct elf32_hppa_link_hash_entry
*h
,
3054 struct bfd_link_info
*info
)
3057 unsigned int r_type
= ELF32_R_TYPE (rel
->r_info
);
3058 unsigned int orig_r_type
= r_type
;
3059 reloc_howto_type
*howto
= elf_hppa_howto_table
+ r_type
;
3060 int r_format
= howto
->bitsize
;
3061 enum hppa_reloc_field_selector_type_alt r_field
;
3062 bfd
*input_bfd
= input_section
->owner
;
3063 bfd_vma offset
= rel
->r_offset
;
3064 bfd_vma max_branch_offset
= 0;
3065 bfd_byte
*hit_data
= contents
+ offset
;
3066 bfd_signed_vma addend
= rel
->r_addend
;
3068 struct elf32_hppa_stub_hash_entry
*stub_entry
= NULL
;
3071 if (r_type
== R_PARISC_NONE
)
3072 return bfd_reloc_ok
;
3074 insn
= bfd_get_32 (input_bfd
, hit_data
);
3076 /* Find out where we are and where we're going. */
3077 location
= (offset
+
3078 input_section
->output_offset
+
3079 input_section
->output_section
->vma
);
3081 /* If we are not building a shared library, convert DLTIND relocs to
3087 case R_PARISC_DLTIND21L
:
3088 r_type
= R_PARISC_DPREL21L
;
3091 case R_PARISC_DLTIND14R
:
3092 r_type
= R_PARISC_DPREL14R
;
3095 case R_PARISC_DLTIND14F
:
3096 r_type
= R_PARISC_DPREL14F
;
3103 case R_PARISC_PCREL12F
:
3104 case R_PARISC_PCREL17F
:
3105 case R_PARISC_PCREL22F
:
3106 /* If this call should go via the plt, find the import stub in
3109 || sym_sec
->output_section
== NULL
3111 && h
->elf
.plt
.offset
!= (bfd_vma
) -1
3112 && h
->elf
.dynindx
!= -1
3115 || !(h
->elf
.elf_link_hash_flags
& ELF_LINK_HASH_DEF_REGULAR
)
3116 || h
->elf
.root
.type
== bfd_link_hash_defweak
)))
3118 stub_entry
= hppa_get_stub_entry (input_section
, sym_sec
,
3120 if (stub_entry
!= NULL
)
3122 value
= (stub_entry
->stub_offset
3123 + stub_entry
->stub_sec
->output_offset
3124 + stub_entry
->stub_sec
->output_section
->vma
);
3127 else if (sym_sec
== NULL
&& h
!= NULL
3128 && h
->elf
.root
.type
== bfd_link_hash_undefweak
)
3130 /* It's OK if undefined weak. Calls to undefined weak
3131 symbols behave as if the "called" function
3132 immediately returns. We can thus call to a weak
3133 function without first checking whether the function
3139 return bfd_reloc_undefined
;
3143 case R_PARISC_PCREL21L
:
3144 case R_PARISC_PCREL17C
:
3145 case R_PARISC_PCREL17R
:
3146 case R_PARISC_PCREL14R
:
3147 case R_PARISC_PCREL14F
:
3148 case R_PARISC_PCREL32
:
3149 /* Make it a pc relative offset. */
3154 case R_PARISC_DPREL21L
:
3155 case R_PARISC_DPREL14R
:
3156 case R_PARISC_DPREL14F
:
3157 /* Convert instructions that use the linkage table pointer (r19) to
3158 instructions that use the global data pointer (dp). This is the
3159 most efficient way of using PIC code in an incomplete executable,
3160 but the user must follow the standard runtime conventions for
3161 accessing data for this to work. */
3162 if (orig_r_type
== R_PARISC_DLTIND21L
)
3164 /* Convert addil instructions if the original reloc was a
3165 DLTIND21L. GCC sometimes uses a register other than r19 for
3166 the operation, so we must convert any addil instruction
3167 that uses this relocation. */
3168 if ((insn
& 0xfc000000) == ((int) OP_ADDIL
<< 26))
3171 /* We must have a ldil instruction. It's too hard to find
3172 and convert the associated add instruction, so issue an
3174 (*_bfd_error_handler
)
3175 (_("%s(%s+0x%lx): %s fixup for insn 0x%x is not supported in a non-shared link"),
3176 bfd_archive_filename (input_bfd
),
3177 input_section
->name
,
3178 (long) rel
->r_offset
,
3182 else if (orig_r_type
== R_PARISC_DLTIND14F
)
3184 /* This must be a format 1 load/store. Change the base
3186 insn
= (insn
& 0xfc1ffff) | (27 << 21);
3189 /* For all the DP relative relocations, we need to examine the symbol's
3190 section. If it has no section or if it's a code section, then
3191 "data pointer relative" makes no sense. In that case we don't
3192 adjust the "value", and for 21 bit addil instructions, we change the
3193 source addend register from %dp to %r0. This situation commonly
3194 arises for undefined weak symbols and when a variable's "constness"
3195 is declared differently from the way the variable is defined. For
3196 instance: "extern int foo" with foo defined as "const int foo". */
3197 if (sym_sec
== NULL
|| (sym_sec
->flags
& SEC_CODE
) != 0)
3199 if ((insn
& ((0x3f << 26) | (0x1f << 21)))
3200 == (((int) OP_ADDIL
<< 26) | (27 << 21)))
3202 insn
&= ~ (0x1f << 21);
3203 #if 0 /* debug them. */
3204 (*_bfd_error_handler
)
3205 (_("%s(%s+0x%lx): fixing %s"),
3206 bfd_archive_filename (input_bfd
),
3207 input_section
->name
,
3208 (long) rel
->r_offset
,
3212 /* Now try to make things easy for the dynamic linker. */
3218 case R_PARISC_DLTIND21L
:
3219 case R_PARISC_DLTIND14R
:
3220 case R_PARISC_DLTIND14F
:
3221 value
-= elf_gp (input_section
->output_section
->owner
);
3224 case R_PARISC_SEGREL32
:
3225 if ((sym_sec
->flags
& SEC_CODE
) != 0)
3226 value
-= htab
->text_segment_base
;
3228 value
-= htab
->data_segment_base
;
3237 case R_PARISC_DIR32
:
3238 case R_PARISC_DIR14F
:
3239 case R_PARISC_DIR17F
:
3240 case R_PARISC_PCREL17C
:
3241 case R_PARISC_PCREL14F
:
3242 case R_PARISC_PCREL32
:
3243 case R_PARISC_DPREL14F
:
3244 case R_PARISC_PLABEL32
:
3245 case R_PARISC_DLTIND14F
:
3246 case R_PARISC_SEGBASE
:
3247 case R_PARISC_SEGREL32
:
3251 case R_PARISC_DLTIND21L
:
3252 case R_PARISC_PCREL21L
:
3253 case R_PARISC_PLABEL21L
:
3257 case R_PARISC_DIR21L
:
3258 case R_PARISC_DPREL21L
:
3262 case R_PARISC_PCREL17R
:
3263 case R_PARISC_PCREL14R
:
3264 case R_PARISC_PLABEL14R
:
3265 case R_PARISC_DLTIND14R
:
3269 case R_PARISC_DIR17R
:
3270 case R_PARISC_DIR14R
:
3271 case R_PARISC_DPREL14R
:
3275 case R_PARISC_PCREL12F
:
3276 case R_PARISC_PCREL17F
:
3277 case R_PARISC_PCREL22F
:
3280 if (r_type
== (unsigned int) R_PARISC_PCREL17F
)
3282 max_branch_offset
= (1 << (17-1)) << 2;
3284 else if (r_type
== (unsigned int) R_PARISC_PCREL12F
)
3286 max_branch_offset
= (1 << (12-1)) << 2;
3290 max_branch_offset
= (1 << (22-1)) << 2;
3293 /* sym_sec is NULL on undefined weak syms or when shared on
3294 undefined syms. We've already checked for a stub for the
3295 shared undefined case. */
3296 if (sym_sec
== NULL
)
3299 /* If the branch is out of reach, then redirect the
3300 call to the local stub for this function. */
3301 if (value
+ addend
+ max_branch_offset
>= 2*max_branch_offset
)
3303 stub_entry
= hppa_get_stub_entry (input_section
, sym_sec
,
3305 if (stub_entry
== NULL
)
3306 return bfd_reloc_undefined
;
3308 /* Munge up the value and addend so that we call the stub
3309 rather than the procedure directly. */
3310 value
= (stub_entry
->stub_offset
3311 + stub_entry
->stub_sec
->output_offset
3312 + stub_entry
->stub_sec
->output_section
->vma
3318 /* Something we don't know how to handle. */
3320 return bfd_reloc_notsupported
;
3323 /* Make sure we can reach the stub. */
3324 if (max_branch_offset
!= 0
3325 && value
+ addend
+ max_branch_offset
>= 2*max_branch_offset
)
3327 (*_bfd_error_handler
)
3328 (_("%s(%s+0x%lx): cannot reach %s, recompile with -ffunction-sections"),
3329 bfd_archive_filename (input_bfd
),
3330 input_section
->name
,
3331 (long) rel
->r_offset
,
3332 stub_entry
->root
.string
);
3333 bfd_set_error (bfd_error_bad_value
);
3334 return bfd_reloc_notsupported
;
3337 val
= hppa_field_adjust (value
, addend
, r_field
);
3341 case R_PARISC_PCREL12F
:
3342 case R_PARISC_PCREL17C
:
3343 case R_PARISC_PCREL17F
:
3344 case R_PARISC_PCREL17R
:
3345 case R_PARISC_PCREL22F
:
3346 case R_PARISC_DIR17F
:
3347 case R_PARISC_DIR17R
:
3348 /* This is a branch. Divide the offset by four.
3349 Note that we need to decide whether it's a branch or
3350 otherwise by inspecting the reloc. Inspecting insn won't
3351 work as insn might be from a .word directive. */
3359 insn
= hppa_rebuild_insn (insn
, val
, r_format
);
3361 /* Update the instruction word. */
3362 bfd_put_32 (input_bfd
, (bfd_vma
) insn
, hit_data
);
3363 return bfd_reloc_ok
;
3366 /* Relocate an HPPA ELF section. */
3369 elf32_hppa_relocate_section (bfd
*output_bfd
,
3370 struct bfd_link_info
*info
,
3372 asection
*input_section
,
3374 Elf_Internal_Rela
*relocs
,
3375 Elf_Internal_Sym
*local_syms
,
3376 asection
**local_sections
)
3378 bfd_vma
*local_got_offsets
;
3379 struct elf32_hppa_link_hash_table
*htab
;
3380 Elf_Internal_Shdr
*symtab_hdr
;
3381 Elf_Internal_Rela
*rel
;
3382 Elf_Internal_Rela
*relend
;
3384 if (info
->relocatable
)
3387 symtab_hdr
= &elf_tdata (input_bfd
)->symtab_hdr
;
3389 htab
= hppa_link_hash_table (info
);
3390 local_got_offsets
= elf_local_got_offsets (input_bfd
);
3393 relend
= relocs
+ input_section
->reloc_count
;
3394 for (; rel
< relend
; rel
++)
3396 unsigned int r_type
;
3397 reloc_howto_type
*howto
;
3398 unsigned int r_symndx
;
3399 struct elf32_hppa_link_hash_entry
*h
;
3400 Elf_Internal_Sym
*sym
;
3403 bfd_reloc_status_type r
;
3404 const char *sym_name
;
3406 bfd_boolean warned_undef
;
3408 r_type
= ELF32_R_TYPE (rel
->r_info
);
3409 if (r_type
>= (unsigned int) R_PARISC_UNIMPLEMENTED
)
3411 bfd_set_error (bfd_error_bad_value
);
3414 if (r_type
== (unsigned int) R_PARISC_GNU_VTENTRY
3415 || r_type
== (unsigned int) R_PARISC_GNU_VTINHERIT
)
3418 /* This is a final link. */
3419 r_symndx
= ELF32_R_SYM (rel
->r_info
);
3423 warned_undef
= FALSE
;
3424 if (r_symndx
< symtab_hdr
->sh_info
)
3426 /* This is a local symbol, h defaults to NULL. */
3427 sym
= local_syms
+ r_symndx
;
3428 sym_sec
= local_sections
[r_symndx
];
3429 relocation
= _bfd_elf_rela_local_sym (output_bfd
, sym
, &sym_sec
, rel
);
3433 struct elf_link_hash_entry
*hh
;
3434 bfd_boolean unresolved_reloc
;
3436 RELOC_FOR_GLOBAL_SYMBOL (hh
, elf_sym_hashes (input_bfd
), r_symndx
, symtab_hdr
,
3437 relocation
, sym_sec
, unresolved_reloc
, info
,
3441 && hh
->root
.type
!= bfd_link_hash_defined
3442 && hh
->root
.type
!= bfd_link_hash_defweak
3443 && hh
->root
.type
!= bfd_link_hash_undefweak
)
3445 if (info
->unresolved_syms_in_objects
== RM_IGNORE
3446 && ELF_ST_VISIBILITY (hh
->other
) == STV_DEFAULT
3447 && hh
->type
== STT_PARISC_MILLI
)
3449 if (! info
->callbacks
->undefined_symbol
3450 (info
, hh
->root
.root
.string
, input_bfd
,
3451 input_section
, rel
->r_offset
, FALSE
))
3453 warned_undef
= TRUE
;
3456 h
= (struct elf32_hppa_link_hash_entry
*) hh
;
3459 /* Do any required modifications to the relocation value, and
3460 determine what types of dynamic info we need to output, if
3465 case R_PARISC_DLTIND14F
:
3466 case R_PARISC_DLTIND14R
:
3467 case R_PARISC_DLTIND21L
:
3470 bfd_boolean do_got
= 0;
3472 /* Relocation is to the entry for this symbol in the
3473 global offset table. */
3478 off
= h
->elf
.got
.offset
;
3479 dyn
= htab
->elf
.dynamic_sections_created
;
3480 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn
, info
, &h
->elf
))
3482 /* If we aren't going to call finish_dynamic_symbol,
3483 then we need to handle initialisation of the .got
3484 entry and create needed relocs here. Since the
3485 offset must always be a multiple of 4, we use the
3486 least significant bit to record whether we have
3487 initialised it already. */
3492 h
->elf
.got
.offset
|= 1;
3499 /* Local symbol case. */
3500 if (local_got_offsets
== NULL
)
3503 off
= local_got_offsets
[r_symndx
];
3505 /* The offset must always be a multiple of 4. We use
3506 the least significant bit to record whether we have
3507 already generated the necessary reloc. */
3512 local_got_offsets
[r_symndx
] |= 1;
3521 /* Output a dynamic relocation for this GOT entry.
3522 In this case it is relative to the base of the
3523 object because the symbol index is zero. */
3524 Elf_Internal_Rela outrel
;
3526 asection
*s
= htab
->srelgot
;
3528 outrel
.r_offset
= (off
3529 + htab
->sgot
->output_offset
3530 + htab
->sgot
->output_section
->vma
);
3531 outrel
.r_info
= ELF32_R_INFO (0, R_PARISC_DIR32
);
3532 outrel
.r_addend
= relocation
;
3534 loc
+= s
->reloc_count
++ * sizeof (Elf32_External_Rela
);
3535 bfd_elf32_swap_reloca_out (output_bfd
, &outrel
, loc
);
3538 bfd_put_32 (output_bfd
, relocation
,
3539 htab
->sgot
->contents
+ off
);
3542 if (off
>= (bfd_vma
) -2)
3545 /* Add the base of the GOT to the relocation value. */
3547 + htab
->sgot
->output_offset
3548 + htab
->sgot
->output_section
->vma
);
3552 case R_PARISC_SEGREL32
:
3553 /* If this is the first SEGREL relocation, then initialize
3554 the segment base values. */
3555 if (htab
->text_segment_base
== (bfd_vma
) -1)
3556 bfd_map_over_sections (output_bfd
, hppa_record_segment_addr
, htab
);
3559 case R_PARISC_PLABEL14R
:
3560 case R_PARISC_PLABEL21L
:
3561 case R_PARISC_PLABEL32
:
3562 if (htab
->elf
.dynamic_sections_created
)
3565 bfd_boolean do_plt
= 0;
3567 /* If we have a global symbol with a PLT slot, then
3568 redirect this relocation to it. */
3571 off
= h
->elf
.plt
.offset
;
3572 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, info
, &h
->elf
))
3574 /* In a non-shared link, adjust_dynamic_symbols
3575 isn't called for symbols forced local. We
3576 need to write out the plt entry here. */
3581 h
->elf
.plt
.offset
|= 1;
3588 bfd_vma
*local_plt_offsets
;
3590 if (local_got_offsets
== NULL
)
3593 local_plt_offsets
= local_got_offsets
+ symtab_hdr
->sh_info
;
3594 off
= local_plt_offsets
[r_symndx
];
3596 /* As for the local .got entry case, we use the last
3597 bit to record whether we've already initialised
3598 this local .plt entry. */
3603 local_plt_offsets
[r_symndx
] |= 1;
3612 /* Output a dynamic IPLT relocation for this
3614 Elf_Internal_Rela outrel
;
3616 asection
*s
= htab
->srelplt
;
3618 outrel
.r_offset
= (off
3619 + htab
->splt
->output_offset
3620 + htab
->splt
->output_section
->vma
);
3621 outrel
.r_info
= ELF32_R_INFO (0, R_PARISC_IPLT
);
3622 outrel
.r_addend
= relocation
;
3624 loc
+= s
->reloc_count
++ * sizeof (Elf32_External_Rela
);
3625 bfd_elf32_swap_reloca_out (output_bfd
, &outrel
, loc
);
3629 bfd_put_32 (output_bfd
,
3631 htab
->splt
->contents
+ off
);
3632 bfd_put_32 (output_bfd
,
3633 elf_gp (htab
->splt
->output_section
->owner
),
3634 htab
->splt
->contents
+ off
+ 4);
3638 if (off
>= (bfd_vma
) -2)
3641 /* PLABELs contain function pointers. Relocation is to
3642 the entry for the function in the .plt. The magic +2
3643 offset signals to $$dyncall that the function pointer
3644 is in the .plt and thus has a gp pointer too.
3645 Exception: Undefined PLABELs should have a value of
3648 || (h
->elf
.root
.type
!= bfd_link_hash_undefweak
3649 && h
->elf
.root
.type
!= bfd_link_hash_undefined
))
3652 + htab
->splt
->output_offset
3653 + htab
->splt
->output_section
->vma
3658 /* Fall through and possibly emit a dynamic relocation. */
3660 case R_PARISC_DIR17F
:
3661 case R_PARISC_DIR17R
:
3662 case R_PARISC_DIR14F
:
3663 case R_PARISC_DIR14R
:
3664 case R_PARISC_DIR21L
:
3665 case R_PARISC_DPREL14F
:
3666 case R_PARISC_DPREL14R
:
3667 case R_PARISC_DPREL21L
:
3668 case R_PARISC_DIR32
:
3669 /* r_symndx will be zero only for relocs against symbols
3670 from removed linkonce sections, or sections discarded by
3673 || (input_section
->flags
& SEC_ALLOC
) == 0)
3676 /* The reloc types handled here and this conditional
3677 expression must match the code in ..check_relocs and
3678 allocate_dynrelocs. ie. We need exactly the same condition
3679 as in ..check_relocs, with some extra conditions (dynindx
3680 test in this case) to cater for relocs removed by
3681 allocate_dynrelocs. If you squint, the non-shared test
3682 here does indeed match the one in ..check_relocs, the
3683 difference being that here we test DEF_DYNAMIC as well as
3684 !DEF_REGULAR. All common syms end up with !DEF_REGULAR,
3685 which is why we can't use just that test here.
3686 Conversely, DEF_DYNAMIC can't be used in check_relocs as
3687 there all files have not been loaded. */
3690 || ELF_ST_VISIBILITY (h
->elf
.other
) == STV_DEFAULT
3691 || h
->elf
.root
.type
!= bfd_link_hash_undefweak
)
3692 && (IS_ABSOLUTE_RELOC (r_type
)
3693 || !SYMBOL_CALLS_LOCAL (info
, &h
->elf
)))
3696 && h
->elf
.dynindx
!= -1
3697 && (h
->elf
.elf_link_hash_flags
& ELF_LINK_NON_GOT_REF
) == 0
3698 && ((ELIMINATE_COPY_RELOCS
3699 && (h
->elf
.elf_link_hash_flags
3700 & ELF_LINK_HASH_DEF_DYNAMIC
) != 0
3701 && (h
->elf
.elf_link_hash_flags
3702 & ELF_LINK_HASH_DEF_REGULAR
) == 0)
3703 || h
->elf
.root
.type
== bfd_link_hash_undefweak
3704 || h
->elf
.root
.type
== bfd_link_hash_undefined
)))
3706 Elf_Internal_Rela outrel
;
3711 /* When generating a shared object, these relocations
3712 are copied into the output file to be resolved at run
3715 outrel
.r_addend
= rel
->r_addend
;
3717 _bfd_elf_section_offset (output_bfd
, info
, input_section
,
3719 skip
= (outrel
.r_offset
== (bfd_vma
) -1
3720 || outrel
.r_offset
== (bfd_vma
) -2);
3721 outrel
.r_offset
+= (input_section
->output_offset
3722 + input_section
->output_section
->vma
);
3726 memset (&outrel
, 0, sizeof (outrel
));
3729 && h
->elf
.dynindx
!= -1
3731 || !IS_ABSOLUTE_RELOC (r_type
)
3734 || (h
->elf
.elf_link_hash_flags
3735 & ELF_LINK_HASH_DEF_REGULAR
) == 0))
3737 outrel
.r_info
= ELF32_R_INFO (h
->elf
.dynindx
, r_type
);
3739 else /* It's a local symbol, or one marked to become local. */
3743 /* Add the absolute offset of the symbol. */
3744 outrel
.r_addend
+= relocation
;
3746 /* Global plabels need to be processed by the
3747 dynamic linker so that functions have at most one
3748 fptr. For this reason, we need to differentiate
3749 between global and local plabels, which we do by
3750 providing the function symbol for a global plabel
3751 reloc, and no symbol for local plabels. */
3754 && sym_sec
->output_section
!= NULL
3755 && ! bfd_is_abs_section (sym_sec
))
3757 /* Skip this relocation if the output section has
3759 if (bfd_is_abs_section (sym_sec
->output_section
))
3762 indx
= elf_section_data (sym_sec
->output_section
)->dynindx
;
3763 /* We are turning this relocation into one
3764 against a section symbol, so subtract out the
3765 output section's address but not the offset
3766 of the input section in the output section. */
3767 outrel
.r_addend
-= sym_sec
->output_section
->vma
;
3770 outrel
.r_info
= ELF32_R_INFO (indx
, r_type
);
3773 /* EH info can cause unaligned DIR32 relocs.
3774 Tweak the reloc type for the dynamic linker. */
3775 if (r_type
== R_PARISC_DIR32
&& (outrel
.r_offset
& 3) != 0)
3776 outrel
.r_info
= ELF32_R_INFO (ELF32_R_SYM (outrel
.r_info
),
3779 sreloc
= elf_section_data (input_section
)->sreloc
;
3783 loc
= sreloc
->contents
;
3784 loc
+= sreloc
->reloc_count
++ * sizeof (Elf32_External_Rela
);
3785 bfd_elf32_swap_reloca_out (output_bfd
, &outrel
, loc
);
3793 r
= final_link_relocate (input_section
, contents
, rel
, relocation
,
3794 htab
, sym_sec
, h
, info
);
3796 if (r
== bfd_reloc_ok
)
3800 sym_name
= h
->elf
.root
.root
.string
;
3803 sym_name
= bfd_elf_string_from_elf_section (input_bfd
,
3804 symtab_hdr
->sh_link
,
3806 if (sym_name
== NULL
)
3808 if (*sym_name
== '\0')
3809 sym_name
= bfd_section_name (input_bfd
, sym_sec
);
3812 howto
= elf_hppa_howto_table
+ r_type
;
3814 if (r
== bfd_reloc_undefined
|| r
== bfd_reloc_notsupported
)
3816 if (r
== bfd_reloc_notsupported
|| !warned_undef
)
3818 (*_bfd_error_handler
)
3819 (_("%s(%s+0x%lx): cannot handle %s for %s"),
3820 bfd_archive_filename (input_bfd
),
3821 input_section
->name
,
3822 (long) rel
->r_offset
,
3825 bfd_set_error (bfd_error_bad_value
);
3831 if (!((*info
->callbacks
->reloc_overflow
)
3832 (info
, sym_name
, howto
->name
, 0, input_bfd
, input_section
,
3841 /* Finish up dynamic symbol handling. We set the contents of various
3842 dynamic sections here. */
3845 elf32_hppa_finish_dynamic_symbol (bfd
*output_bfd
,
3846 struct bfd_link_info
*info
,
3847 struct elf_link_hash_entry
*h
,
3848 Elf_Internal_Sym
*sym
)
3850 struct elf32_hppa_link_hash_table
*htab
;
3851 Elf_Internal_Rela rel
;
3854 htab
= hppa_link_hash_table (info
);
3856 if (h
->plt
.offset
!= (bfd_vma
) -1)
3860 if (h
->plt
.offset
& 1)
3863 /* This symbol has an entry in the procedure linkage table. Set
3866 The format of a plt entry is
3871 if (h
->root
.type
== bfd_link_hash_defined
3872 || h
->root
.type
== bfd_link_hash_defweak
)
3874 value
= h
->root
.u
.def
.value
;
3875 if (h
->root
.u
.def
.section
->output_section
!= NULL
)
3876 value
+= (h
->root
.u
.def
.section
->output_offset
3877 + h
->root
.u
.def
.section
->output_section
->vma
);
3880 /* Create a dynamic IPLT relocation for this entry. */
3881 rel
.r_offset
= (h
->plt
.offset
3882 + htab
->splt
->output_offset
3883 + htab
->splt
->output_section
->vma
);
3884 if (h
->dynindx
!= -1)
3886 rel
.r_info
= ELF32_R_INFO (h
->dynindx
, R_PARISC_IPLT
);
3891 /* This symbol has been marked to become local, and is
3892 used by a plabel so must be kept in the .plt. */
3893 rel
.r_info
= ELF32_R_INFO (0, R_PARISC_IPLT
);
3894 rel
.r_addend
= value
;
3897 loc
= htab
->srelplt
->contents
;
3898 loc
+= htab
->srelplt
->reloc_count
++ * sizeof (Elf32_External_Rela
);
3899 bfd_elf32_swap_reloca_out (htab
->splt
->output_section
->owner
, &rel
, loc
);
3901 if ((h
->elf_link_hash_flags
& ELF_LINK_HASH_DEF_REGULAR
) == 0)
3903 /* Mark the symbol as undefined, rather than as defined in
3904 the .plt section. Leave the value alone. */
3905 sym
->st_shndx
= SHN_UNDEF
;
3909 if (h
->got
.offset
!= (bfd_vma
) -1)
3911 /* This symbol has an entry in the global offset table. Set it
3914 rel
.r_offset
= ((h
->got
.offset
&~ (bfd_vma
) 1)
3915 + htab
->sgot
->output_offset
3916 + htab
->sgot
->output_section
->vma
);
3918 /* If this is a -Bsymbolic link and the symbol is defined
3919 locally or was forced to be local because of a version file,
3920 we just want to emit a RELATIVE reloc. The entry in the
3921 global offset table will already have been initialized in the
3922 relocate_section function. */
3924 && (info
->symbolic
|| h
->dynindx
== -1)
3925 && (h
->elf_link_hash_flags
& ELF_LINK_HASH_DEF_REGULAR
))
3927 rel
.r_info
= ELF32_R_INFO (0, R_PARISC_DIR32
);
3928 rel
.r_addend
= (h
->root
.u
.def
.value
3929 + h
->root
.u
.def
.section
->output_offset
3930 + h
->root
.u
.def
.section
->output_section
->vma
);
3934 if ((h
->got
.offset
& 1) != 0)
3936 bfd_put_32 (output_bfd
, 0, htab
->sgot
->contents
+ h
->got
.offset
);
3937 rel
.r_info
= ELF32_R_INFO (h
->dynindx
, R_PARISC_DIR32
);
3941 loc
= htab
->srelgot
->contents
;
3942 loc
+= htab
->srelgot
->reloc_count
++ * sizeof (Elf32_External_Rela
);
3943 bfd_elf32_swap_reloca_out (output_bfd
, &rel
, loc
);
3946 if ((h
->elf_link_hash_flags
& ELF_LINK_HASH_NEEDS_COPY
) != 0)
3950 /* This symbol needs a copy reloc. Set it up. */
3952 if (! (h
->dynindx
!= -1
3953 && (h
->root
.type
== bfd_link_hash_defined
3954 || h
->root
.type
== bfd_link_hash_defweak
)))
3959 rel
.r_offset
= (h
->root
.u
.def
.value
3960 + h
->root
.u
.def
.section
->output_offset
3961 + h
->root
.u
.def
.section
->output_section
->vma
);
3963 rel
.r_info
= ELF32_R_INFO (h
->dynindx
, R_PARISC_COPY
);
3964 loc
= s
->contents
+ s
->reloc_count
++ * sizeof (Elf32_External_Rela
);
3965 bfd_elf32_swap_reloca_out (output_bfd
, &rel
, loc
);
3968 /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. */
3969 if (h
->root
.root
.string
[0] == '_'
3970 && (strcmp (h
->root
.root
.string
, "_DYNAMIC") == 0
3971 || strcmp (h
->root
.root
.string
, "_GLOBAL_OFFSET_TABLE_") == 0))
3973 sym
->st_shndx
= SHN_ABS
;
3979 /* Used to decide how to sort relocs in an optimal manner for the
3980 dynamic linker, before writing them out. */
3982 static enum elf_reloc_type_class
3983 elf32_hppa_reloc_type_class (const Elf_Internal_Rela
*rela
)
3985 if (ELF32_R_SYM (rela
->r_info
) == 0)
3986 return reloc_class_relative
;
3988 switch ((int) ELF32_R_TYPE (rela
->r_info
))
3991 return reloc_class_plt
;
3993 return reloc_class_copy
;
3995 return reloc_class_normal
;
3999 /* Finish up the dynamic sections. */
4002 elf32_hppa_finish_dynamic_sections (bfd
*output_bfd
,
4003 struct bfd_link_info
*info
)
4006 struct elf32_hppa_link_hash_table
*htab
;
4009 htab
= hppa_link_hash_table (info
);
4010 dynobj
= htab
->elf
.dynobj
;
4012 sdyn
= bfd_get_section_by_name (dynobj
, ".dynamic");
4014 if (htab
->elf
.dynamic_sections_created
)
4016 Elf32_External_Dyn
*dyncon
, *dynconend
;
4021 dyncon
= (Elf32_External_Dyn
*) sdyn
->contents
;
4022 dynconend
= (Elf32_External_Dyn
*) (sdyn
->contents
+ sdyn
->_raw_size
);
4023 for (; dyncon
< dynconend
; dyncon
++)
4025 Elf_Internal_Dyn dyn
;
4028 bfd_elf32_swap_dyn_in (dynobj
, dyncon
, &dyn
);
4036 /* Use PLTGOT to set the GOT register. */
4037 dyn
.d_un
.d_ptr
= elf_gp (output_bfd
);
4042 dyn
.d_un
.d_ptr
= s
->output_section
->vma
+ s
->output_offset
;
4047 dyn
.d_un
.d_val
= s
->_raw_size
;
4051 /* Don't count procedure linkage table relocs in the
4052 overall reloc count. */
4056 dyn
.d_un
.d_val
-= s
->_raw_size
;
4060 /* We may not be using the standard ELF linker script.
4061 If .rela.plt is the first .rela section, we adjust
4062 DT_RELA to not include it. */
4066 if (dyn
.d_un
.d_ptr
!= s
->output_section
->vma
+ s
->output_offset
)
4068 dyn
.d_un
.d_ptr
+= s
->_raw_size
;
4072 bfd_elf32_swap_dyn_out (output_bfd
, &dyn
, dyncon
);
4076 if (htab
->sgot
!= NULL
&& htab
->sgot
->_raw_size
!= 0)
4078 /* Fill in the first entry in the global offset table.
4079 We use it to point to our dynamic section, if we have one. */
4080 bfd_put_32 (output_bfd
,
4081 sdyn
? sdyn
->output_section
->vma
+ sdyn
->output_offset
: 0,
4082 htab
->sgot
->contents
);
4084 /* The second entry is reserved for use by the dynamic linker. */
4085 memset (htab
->sgot
->contents
+ GOT_ENTRY_SIZE
, 0, GOT_ENTRY_SIZE
);
4087 /* Set .got entry size. */
4088 elf_section_data (htab
->sgot
->output_section
)
4089 ->this_hdr
.sh_entsize
= GOT_ENTRY_SIZE
;
4092 if (htab
->splt
!= NULL
&& htab
->splt
->_raw_size
!= 0)
4094 /* Set plt entry size. */
4095 elf_section_data (htab
->splt
->output_section
)
4096 ->this_hdr
.sh_entsize
= PLT_ENTRY_SIZE
;
4098 if (htab
->need_plt_stub
)
4100 /* Set up the .plt stub. */
4101 memcpy (htab
->splt
->contents
4102 + htab
->splt
->_raw_size
- sizeof (plt_stub
),
4103 plt_stub
, sizeof (plt_stub
));
4105 if ((htab
->splt
->output_offset
4106 + htab
->splt
->output_section
->vma
4107 + htab
->splt
->_raw_size
)
4108 != (htab
->sgot
->output_offset
4109 + htab
->sgot
->output_section
->vma
))
4111 (*_bfd_error_handler
)
4112 (_(".got section not immediately after .plt section"));
4121 /* Tweak the OSABI field of the elf header. */
4124 elf32_hppa_post_process_headers (bfd
*abfd
,
4125 struct bfd_link_info
*info ATTRIBUTE_UNUSED
)
4127 Elf_Internal_Ehdr
* i_ehdrp
;
4129 i_ehdrp
= elf_elfheader (abfd
);
4131 if (strcmp (bfd_get_target (abfd
), "elf32-hppa-linux") == 0)
4133 i_ehdrp
->e_ident
[EI_OSABI
] = ELFOSABI_LINUX
;
4137 i_ehdrp
->e_ident
[EI_OSABI
] = ELFOSABI_HPUX
;
4141 /* Called when writing out an object file to decide the type of a
4144 elf32_hppa_elf_get_symbol_type (Elf_Internal_Sym
*elf_sym
, int type
)
4146 if (ELF_ST_TYPE (elf_sym
->st_info
) == STT_PARISC_MILLI
)
4147 return STT_PARISC_MILLI
;
4152 /* Misc BFD support code. */
4153 #define bfd_elf32_bfd_is_local_label_name elf_hppa_is_local_label_name
4154 #define bfd_elf32_bfd_reloc_type_lookup elf_hppa_reloc_type_lookup
4155 #define elf_info_to_howto elf_hppa_info_to_howto
4156 #define elf_info_to_howto_rel elf_hppa_info_to_howto_rel
4158 /* Stuff for the BFD linker. */
4159 #define bfd_elf32_bfd_final_link elf32_hppa_final_link
4160 #define bfd_elf32_bfd_link_hash_table_create elf32_hppa_link_hash_table_create
4161 #define bfd_elf32_bfd_link_hash_table_free elf32_hppa_link_hash_table_free
4162 #define elf_backend_adjust_dynamic_symbol elf32_hppa_adjust_dynamic_symbol
4163 #define elf_backend_copy_indirect_symbol elf32_hppa_copy_indirect_symbol
4164 #define elf_backend_check_relocs elf32_hppa_check_relocs
4165 #define elf_backend_create_dynamic_sections elf32_hppa_create_dynamic_sections
4166 #define elf_backend_fake_sections elf_hppa_fake_sections
4167 #define elf_backend_relocate_section elf32_hppa_relocate_section
4168 #define elf_backend_hide_symbol elf32_hppa_hide_symbol
4169 #define elf_backend_finish_dynamic_symbol elf32_hppa_finish_dynamic_symbol
4170 #define elf_backend_finish_dynamic_sections elf32_hppa_finish_dynamic_sections
4171 #define elf_backend_size_dynamic_sections elf32_hppa_size_dynamic_sections
4172 #define elf_backend_gc_mark_hook elf32_hppa_gc_mark_hook
4173 #define elf_backend_gc_sweep_hook elf32_hppa_gc_sweep_hook
4174 #define elf_backend_object_p elf32_hppa_object_p
4175 #define elf_backend_final_write_processing elf_hppa_final_write_processing
4176 #define elf_backend_post_process_headers elf32_hppa_post_process_headers
4177 #define elf_backend_get_symbol_type elf32_hppa_elf_get_symbol_type
4178 #define elf_backend_reloc_type_class elf32_hppa_reloc_type_class
4180 #define elf_backend_can_gc_sections 1
4181 #define elf_backend_can_refcount 1
4182 #define elf_backend_plt_alignment 2
4183 #define elf_backend_want_got_plt 0
4184 #define elf_backend_plt_readonly 0
4185 #define elf_backend_want_plt_sym 0
4186 #define elf_backend_got_header_size 8
4187 #define elf_backend_rela_normal 1
4189 #define TARGET_BIG_SYM bfd_elf32_hppa_vec
4190 #define TARGET_BIG_NAME "elf32-hppa"
4191 #define ELF_ARCH bfd_arch_hppa
4192 #define ELF_MACHINE_CODE EM_PARISC
4193 #define ELF_MAXPAGESIZE 0x1000
4195 #include "elf32-target.h"
4197 #undef TARGET_BIG_SYM
4198 #define TARGET_BIG_SYM bfd_elf32_hppa_linux_vec
4199 #undef TARGET_BIG_NAME
4200 #define TARGET_BIG_NAME "elf32-hppa-linux"
4202 #define INCLUDED_TARGET_FILE 1
4203 #include "elf32-target.h"