db41f6eb52
Don't generate dynamic relocation against weak undefined symbol if it is resolved to zero. FIXME: UNDEFWEAK_NO_DYNAMIC_RELOC may need to be checked in more places. PR ld/22269 * elfnn-ia64.c (elfNN_ia64_check_relocs): Don't allocate dynamic relocation if UNDEFWEAK_NO_DYNAMIC_RELOC is true. (allocate_fptr): Don't allocate function pointer if UNDEFWEAK_NO_DYNAMIC_RELOC is true. (allocate_dynrel_entries): Don't allocate dynamic relocation if UNDEFWEAK_NO_DYNAMIC_RELOC is true. (set_got_entry): Don't set GOT entry if UNDEFWEAK_NO_DYNAMIC_RELOC is true. (set_pltoff_entry): Don't set PLTOFF entry if UNDEFWEAK_NO_DYNAMIC_RELOC is true. (elfNN_ia64_relocate_section): Don't install dynamic relocation UNDEFWEAK_NO_DYNAMIC_RELOC is true.
5125 lines
140 KiB
C
5125 lines
140 KiB
C
/* IA-64 support for 64-bit ELF
|
||
Copyright (C) 1998-2017 Free Software Foundation, Inc.
|
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Contributed by David Mosberger-Tang <davidm@hpl.hp.com>
|
||
|
||
This file is part of BFD, the Binary File Descriptor library.
|
||
|
||
This program is free software; you can redistribute it and/or modify
|
||
it under the terms of the GNU General Public License as published by
|
||
the Free Software Foundation; either version 3 of the License, or
|
||
(at your option) any later version.
|
||
|
||
This program is distributed in the hope that it will be useful,
|
||
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||
GNU General Public License for more details.
|
||
|
||
You should have received a copy of the GNU General Public License
|
||
along with this program; if not, write to the Free Software
|
||
Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
|
||
MA 02110-1301, USA. */
|
||
|
||
#include "sysdep.h"
|
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#include "bfd.h"
|
||
#include "libbfd.h"
|
||
#include "elf-bfd.h"
|
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#include "opcode/ia64.h"
|
||
#include "elf/ia64.h"
|
||
#include "objalloc.h"
|
||
#include "hashtab.h"
|
||
#include "bfd_stdint.h"
|
||
#include "elfxx-ia64.h"
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||
|
||
#define ARCH_SIZE NN
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|
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#if ARCH_SIZE == 64
|
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#define LOG_SECTION_ALIGN 3
|
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#endif
|
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|
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#if ARCH_SIZE == 32
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#define LOG_SECTION_ALIGN 2
|
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#endif
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||
|
||
typedef struct bfd_hash_entry *(*new_hash_entry_func)
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(struct bfd_hash_entry *, struct bfd_hash_table *, const char *);
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|
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/* In dynamically (linker-) created sections, we generally need to keep track
|
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of the place a symbol or expression got allocated to. This is done via hash
|
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tables that store entries of the following type. */
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|
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struct elfNN_ia64_dyn_sym_info
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{
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/* The addend for which this entry is relevant. */
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bfd_vma addend;
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||
|
||
bfd_vma got_offset;
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bfd_vma fptr_offset;
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||
bfd_vma pltoff_offset;
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bfd_vma plt_offset;
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||
bfd_vma plt2_offset;
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bfd_vma tprel_offset;
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bfd_vma dtpmod_offset;
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||
bfd_vma dtprel_offset;
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||
|
||
/* The symbol table entry, if any, that this was derived from. */
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||
struct elf_link_hash_entry *h;
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||
|
||
/* Used to count non-got, non-plt relocations for delayed sizing
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of relocation sections. */
|
||
struct elfNN_ia64_dyn_reloc_entry
|
||
{
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struct elfNN_ia64_dyn_reloc_entry *next;
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asection *srel;
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int type;
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||
int count;
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||
|
||
/* Is this reloc against readonly section? */
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bfd_boolean reltext;
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} *reloc_entries;
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||
|
||
/* TRUE when the section contents have been updated. */
|
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unsigned got_done : 1;
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unsigned fptr_done : 1;
|
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unsigned pltoff_done : 1;
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unsigned tprel_done : 1;
|
||
unsigned dtpmod_done : 1;
|
||
unsigned dtprel_done : 1;
|
||
|
||
/* TRUE for the different kinds of linker data we want created. */
|
||
unsigned want_got : 1;
|
||
unsigned want_gotx : 1;
|
||
unsigned want_fptr : 1;
|
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unsigned want_ltoff_fptr : 1;
|
||
unsigned want_plt : 1;
|
||
unsigned want_plt2 : 1;
|
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unsigned want_pltoff : 1;
|
||
unsigned want_tprel : 1;
|
||
unsigned want_dtpmod : 1;
|
||
unsigned want_dtprel : 1;
|
||
};
|
||
|
||
struct elfNN_ia64_local_hash_entry
|
||
{
|
||
int id;
|
||
unsigned int r_sym;
|
||
/* The number of elements in elfNN_ia64_dyn_sym_info array. */
|
||
unsigned int count;
|
||
/* The number of sorted elements in elfNN_ia64_dyn_sym_info array. */
|
||
unsigned int sorted_count;
|
||
/* The size of elfNN_ia64_dyn_sym_info array. */
|
||
unsigned int size;
|
||
/* The array of elfNN_ia64_dyn_sym_info. */
|
||
struct elfNN_ia64_dyn_sym_info *info;
|
||
|
||
/* TRUE if this hash entry's addends was translated for
|
||
SHF_MERGE optimization. */
|
||
unsigned sec_merge_done : 1;
|
||
};
|
||
|
||
struct elfNN_ia64_link_hash_entry
|
||
{
|
||
struct elf_link_hash_entry root;
|
||
/* The number of elements in elfNN_ia64_dyn_sym_info array. */
|
||
unsigned int count;
|
||
/* The number of sorted elements in elfNN_ia64_dyn_sym_info array. */
|
||
unsigned int sorted_count;
|
||
/* The size of elfNN_ia64_dyn_sym_info array. */
|
||
unsigned int size;
|
||
/* The array of elfNN_ia64_dyn_sym_info. */
|
||
struct elfNN_ia64_dyn_sym_info *info;
|
||
};
|
||
|
||
struct elfNN_ia64_link_hash_table
|
||
{
|
||
/* The main hash table. */
|
||
struct elf_link_hash_table root;
|
||
|
||
asection *fptr_sec; /* Function descriptor table (or NULL). */
|
||
asection *rel_fptr_sec; /* Dynamic relocation section for same. */
|
||
asection *pltoff_sec; /* Private descriptors for plt (or NULL). */
|
||
asection *rel_pltoff_sec; /* Dynamic relocation section for same. */
|
||
|
||
bfd_size_type minplt_entries; /* Number of minplt entries. */
|
||
unsigned reltext : 1; /* Are there relocs against readonly sections? */
|
||
unsigned self_dtpmod_done : 1;/* Has self DTPMOD entry been finished? */
|
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bfd_vma self_dtpmod_offset; /* .got offset to self DTPMOD entry. */
|
||
/* There are maybe R_IA64_GPREL22 relocations, including those
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optimized from R_IA64_LTOFF22X, against non-SHF_IA_64_SHORT
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||
sections. We need to record those sections so that we can choose
|
||
a proper GP to cover all R_IA64_GPREL22 relocations. */
|
||
asection *max_short_sec; /* Maximum short output section. */
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bfd_vma max_short_offset; /* Maximum short offset. */
|
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asection *min_short_sec; /* Minimum short output section. */
|
||
bfd_vma min_short_offset; /* Minimum short offset. */
|
||
|
||
htab_t loc_hash_table;
|
||
void *loc_hash_memory;
|
||
};
|
||
|
||
struct elfNN_ia64_allocate_data
|
||
{
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||
struct bfd_link_info *info;
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bfd_size_type ofs;
|
||
bfd_boolean only_got;
|
||
};
|
||
|
||
#define elfNN_ia64_hash_table(p) \
|
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(elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
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== IA64_ELF_DATA ? ((struct elfNN_ia64_link_hash_table *) ((p)->hash)) : NULL)
|
||
|
||
static struct elfNN_ia64_dyn_sym_info * get_dyn_sym_info
|
||
(struct elfNN_ia64_link_hash_table *ia64_info,
|
||
struct elf_link_hash_entry *h,
|
||
bfd *abfd, const Elf_Internal_Rela *rel, bfd_boolean create);
|
||
static bfd_boolean elfNN_ia64_dynamic_symbol_p
|
||
(struct elf_link_hash_entry *h, struct bfd_link_info *info, int);
|
||
static bfd_boolean elfNN_ia64_choose_gp
|
||
(bfd *abfd, struct bfd_link_info *info, bfd_boolean final);
|
||
static void elfNN_ia64_dyn_sym_traverse
|
||
(struct elfNN_ia64_link_hash_table *ia64_info,
|
||
bfd_boolean (*func) (struct elfNN_ia64_dyn_sym_info *, void *),
|
||
void * info);
|
||
static bfd_boolean allocate_global_data_got
|
||
(struct elfNN_ia64_dyn_sym_info *dyn_i, void * data);
|
||
static bfd_boolean allocate_global_fptr_got
|
||
(struct elfNN_ia64_dyn_sym_info *dyn_i, void * data);
|
||
static bfd_boolean allocate_local_got
|
||
(struct elfNN_ia64_dyn_sym_info *dyn_i, void * data);
|
||
static bfd_boolean elfNN_ia64_hpux_vec
|
||
(const bfd_target *vec);
|
||
static bfd_boolean allocate_dynrel_entries
|
||
(struct elfNN_ia64_dyn_sym_info *dyn_i, void * data);
|
||
static asection *get_pltoff
|
||
(bfd *abfd, struct bfd_link_info *info,
|
||
struct elfNN_ia64_link_hash_table *ia64_info);
|
||
|
||
/* ia64-specific relocation. */
|
||
|
||
/* Given a ELF reloc, return the matching HOWTO structure. */
|
||
|
||
static void
|
||
elfNN_ia64_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED,
|
||
arelent *bfd_reloc,
|
||
Elf_Internal_Rela *elf_reloc)
|
||
{
|
||
bfd_reloc->howto
|
||
= ia64_elf_lookup_howto ((unsigned int) ELFNN_R_TYPE (elf_reloc->r_info));
|
||
}
|
||
|
||
#define PLT_HEADER_SIZE (3 * 16)
|
||
#define PLT_MIN_ENTRY_SIZE (1 * 16)
|
||
#define PLT_FULL_ENTRY_SIZE (2 * 16)
|
||
#define PLT_RESERVED_WORDS 3
|
||
|
||
static const bfd_byte plt_header[PLT_HEADER_SIZE] =
|
||
{
|
||
0x0b, 0x10, 0x00, 0x1c, 0x00, 0x21, /* [MMI] mov r2=r14;; */
|
||
0xe0, 0x00, 0x08, 0x00, 0x48, 0x00, /* addl r14=0,r2 */
|
||
0x00, 0x00, 0x04, 0x00, /* nop.i 0x0;; */
|
||
0x0b, 0x80, 0x20, 0x1c, 0x18, 0x14, /* [MMI] ld8 r16=[r14],8;; */
|
||
0x10, 0x41, 0x38, 0x30, 0x28, 0x00, /* ld8 r17=[r14],8 */
|
||
0x00, 0x00, 0x04, 0x00, /* nop.i 0x0;; */
|
||
0x11, 0x08, 0x00, 0x1c, 0x18, 0x10, /* [MIB] ld8 r1=[r14] */
|
||
0x60, 0x88, 0x04, 0x80, 0x03, 0x00, /* mov b6=r17 */
|
||
0x60, 0x00, 0x80, 0x00 /* br.few b6;; */
|
||
};
|
||
|
||
static const bfd_byte plt_min_entry[PLT_MIN_ENTRY_SIZE] =
|
||
{
|
||
0x11, 0x78, 0x00, 0x00, 0x00, 0x24, /* [MIB] mov r15=0 */
|
||
0x00, 0x00, 0x00, 0x02, 0x00, 0x00, /* nop.i 0x0 */
|
||
0x00, 0x00, 0x00, 0x40 /* br.few 0 <PLT0>;; */
|
||
};
|
||
|
||
static const bfd_byte plt_full_entry[PLT_FULL_ENTRY_SIZE] =
|
||
{
|
||
0x0b, 0x78, 0x00, 0x02, 0x00, 0x24, /* [MMI] addl r15=0,r1;; */
|
||
0x00, 0x41, 0x3c, 0x70, 0x29, 0xc0, /* ld8.acq r16=[r15],8*/
|
||
0x01, 0x08, 0x00, 0x84, /* mov r14=r1;; */
|
||
0x11, 0x08, 0x00, 0x1e, 0x18, 0x10, /* [MIB] ld8 r1=[r15] */
|
||
0x60, 0x80, 0x04, 0x80, 0x03, 0x00, /* mov b6=r16 */
|
||
0x60, 0x00, 0x80, 0x00 /* br.few b6;; */
|
||
};
|
||
|
||
#define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1"
|
||
|
||
static const bfd_byte oor_brl[16] =
|
||
{
|
||
0x05, 0x00, 0x00, 0x00, 0x01, 0x00, /* [MLX] nop.m 0 */
|
||
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* brl.sptk.few tgt;; */
|
||
0x00, 0x00, 0x00, 0xc0
|
||
};
|
||
|
||
static const bfd_byte oor_ip[48] =
|
||
{
|
||
0x04, 0x00, 0x00, 0x00, 0x01, 0x00, /* [MLX] nop.m 0 */
|
||
0x00, 0x00, 0x00, 0x00, 0x00, 0xe0, /* movl r15=0 */
|
||
0x01, 0x00, 0x00, 0x60,
|
||
0x03, 0x00, 0x00, 0x00, 0x01, 0x00, /* [MII] nop.m 0 */
|
||
0x00, 0x01, 0x00, 0x60, 0x00, 0x00, /* mov r16=ip;; */
|
||
0xf2, 0x80, 0x00, 0x80, /* add r16=r15,r16;; */
|
||
0x11, 0x00, 0x00, 0x00, 0x01, 0x00, /* [MIB] nop.m 0 */
|
||
0x60, 0x80, 0x04, 0x80, 0x03, 0x00, /* mov b6=r16 */
|
||
0x60, 0x00, 0x80, 0x00 /* br b6;; */
|
||
};
|
||
|
||
static size_t oor_branch_size = sizeof (oor_brl);
|
||
|
||
void
|
||
bfd_elfNN_ia64_after_parse (int itanium)
|
||
{
|
||
oor_branch_size = itanium ? sizeof (oor_ip) : sizeof (oor_brl);
|
||
}
|
||
|
||
|
||
/* Rename some of the generic section flags to better document how they
|
||
are used here. */
|
||
#define skip_relax_pass_0 sec_flg0
|
||
#define skip_relax_pass_1 sec_flg1
|
||
|
||
/* These functions do relaxation for IA-64 ELF. */
|
||
|
||
static void
|
||
elfNN_ia64_update_short_info (asection *sec, bfd_vma offset,
|
||
struct elfNN_ia64_link_hash_table *ia64_info)
|
||
{
|
||
/* Skip ABS and SHF_IA_64_SHORT sections. */
|
||
if (sec == bfd_abs_section_ptr
|
||
|| (sec->flags & SEC_SMALL_DATA) != 0)
|
||
return;
|
||
|
||
if (!ia64_info->min_short_sec)
|
||
{
|
||
ia64_info->max_short_sec = sec;
|
||
ia64_info->max_short_offset = offset;
|
||
ia64_info->min_short_sec = sec;
|
||
ia64_info->min_short_offset = offset;
|
||
}
|
||
else if (sec == ia64_info->max_short_sec
|
||
&& offset > ia64_info->max_short_offset)
|
||
ia64_info->max_short_offset = offset;
|
||
else if (sec == ia64_info->min_short_sec
|
||
&& offset < ia64_info->min_short_offset)
|
||
ia64_info->min_short_offset = offset;
|
||
else if (sec->output_section->vma
|
||
> ia64_info->max_short_sec->vma)
|
||
{
|
||
ia64_info->max_short_sec = sec;
|
||
ia64_info->max_short_offset = offset;
|
||
}
|
||
else if (sec->output_section->vma
|
||
< ia64_info->min_short_sec->vma)
|
||
{
|
||
ia64_info->min_short_sec = sec;
|
||
ia64_info->min_short_offset = offset;
|
||
}
|
||
}
|
||
|
||
static bfd_boolean
|
||
elfNN_ia64_relax_section (bfd *abfd, asection *sec,
|
||
struct bfd_link_info *link_info,
|
||
bfd_boolean *again)
|
||
{
|
||
struct one_fixup
|
||
{
|
||
struct one_fixup *next;
|
||
asection *tsec;
|
||
bfd_vma toff;
|
||
bfd_vma trampoff;
|
||
};
|
||
|
||
Elf_Internal_Shdr *symtab_hdr;
|
||
Elf_Internal_Rela *internal_relocs;
|
||
Elf_Internal_Rela *irel, *irelend;
|
||
bfd_byte *contents;
|
||
Elf_Internal_Sym *isymbuf = NULL;
|
||
struct elfNN_ia64_link_hash_table *ia64_info;
|
||
struct one_fixup *fixups = NULL;
|
||
bfd_boolean changed_contents = FALSE;
|
||
bfd_boolean changed_relocs = FALSE;
|
||
bfd_boolean changed_got = FALSE;
|
||
bfd_boolean skip_relax_pass_0 = TRUE;
|
||
bfd_boolean skip_relax_pass_1 = TRUE;
|
||
bfd_vma gp = 0;
|
||
|
||
/* Assume we're not going to change any sizes, and we'll only need
|
||
one pass. */
|
||
*again = FALSE;
|
||
|
||
if (bfd_link_relocatable (link_info))
|
||
(*link_info->callbacks->einfo)
|
||
(_("%P%F: --relax and -r may not be used together\n"));
|
||
|
||
/* Don't even try to relax for non-ELF outputs. */
|
||
if (!is_elf_hash_table (link_info->hash))
|
||
return FALSE;
|
||
|
||
/* Nothing to do if there are no relocations or there is no need for
|
||
the current pass. */
|
||
if ((sec->flags & SEC_RELOC) == 0
|
||
|| sec->reloc_count == 0
|
||
|| (link_info->relax_pass == 0 && sec->skip_relax_pass_0)
|
||
|| (link_info->relax_pass == 1 && sec->skip_relax_pass_1))
|
||
return TRUE;
|
||
|
||
ia64_info = elfNN_ia64_hash_table (link_info);
|
||
if (ia64_info == NULL)
|
||
return FALSE;
|
||
|
||
symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
|
||
|
||
/* Load the relocations for this section. */
|
||
internal_relocs = (_bfd_elf_link_read_relocs
|
||
(abfd, sec, NULL, (Elf_Internal_Rela *) NULL,
|
||
link_info->keep_memory));
|
||
if (internal_relocs == NULL)
|
||
return FALSE;
|
||
|
||
irelend = internal_relocs + sec->reloc_count;
|
||
|
||
/* Get the section contents. */
|
||
if (elf_section_data (sec)->this_hdr.contents != NULL)
|
||
contents = elf_section_data (sec)->this_hdr.contents;
|
||
else
|
||
{
|
||
if (!bfd_malloc_and_get_section (abfd, sec, &contents))
|
||
goto error_return;
|
||
}
|
||
|
||
for (irel = internal_relocs; irel < irelend; irel++)
|
||
{
|
||
unsigned long r_type = ELFNN_R_TYPE (irel->r_info);
|
||
bfd_vma symaddr, reladdr, trampoff, toff, roff;
|
||
asection *tsec;
|
||
struct one_fixup *f;
|
||
bfd_size_type amt;
|
||
bfd_boolean is_branch;
|
||
struct elfNN_ia64_dyn_sym_info *dyn_i;
|
||
char symtype;
|
||
|
||
switch (r_type)
|
||
{
|
||
case R_IA64_PCREL21B:
|
||
case R_IA64_PCREL21BI:
|
||
case R_IA64_PCREL21M:
|
||
case R_IA64_PCREL21F:
|
||
/* In pass 1, all br relaxations are done. We can skip it. */
|
||
if (link_info->relax_pass == 1)
|
||
continue;
|
||
skip_relax_pass_0 = FALSE;
|
||
is_branch = TRUE;
|
||
break;
|
||
|
||
case R_IA64_PCREL60B:
|
||
/* We can't optimize brl to br in pass 0 since br relaxations
|
||
will increase the code size. Defer it to pass 1. */
|
||
if (link_info->relax_pass == 0)
|
||
{
|
||
skip_relax_pass_1 = FALSE;
|
||
continue;
|
||
}
|
||
is_branch = TRUE;
|
||
break;
|
||
|
||
case R_IA64_GPREL22:
|
||
/* Update max_short_sec/min_short_sec. */
|
||
|
||
case R_IA64_LTOFF22X:
|
||
case R_IA64_LDXMOV:
|
||
/* We can't relax ldx/mov in pass 0 since br relaxations will
|
||
increase the code size. Defer it to pass 1. */
|
||
if (link_info->relax_pass == 0)
|
||
{
|
||
skip_relax_pass_1 = FALSE;
|
||
continue;
|
||
}
|
||
is_branch = FALSE;
|
||
break;
|
||
|
||
default:
|
||
continue;
|
||
}
|
||
|
||
/* Get the value of the symbol referred to by the reloc. */
|
||
if (ELFNN_R_SYM (irel->r_info) < symtab_hdr->sh_info)
|
||
{
|
||
/* A local symbol. */
|
||
Elf_Internal_Sym *isym;
|
||
|
||
/* Read this BFD's local symbols. */
|
||
if (isymbuf == NULL)
|
||
{
|
||
isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents;
|
||
if (isymbuf == NULL)
|
||
isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr,
|
||
symtab_hdr->sh_info, 0,
|
||
NULL, NULL, NULL);
|
||
if (isymbuf == 0)
|
||
goto error_return;
|
||
}
|
||
|
||
isym = isymbuf + ELFNN_R_SYM (irel->r_info);
|
||
if (isym->st_shndx == SHN_UNDEF)
|
||
continue; /* We can't do anything with undefined symbols. */
|
||
else if (isym->st_shndx == SHN_ABS)
|
||
tsec = bfd_abs_section_ptr;
|
||
else if (isym->st_shndx == SHN_COMMON)
|
||
tsec = bfd_com_section_ptr;
|
||
else if (isym->st_shndx == SHN_IA_64_ANSI_COMMON)
|
||
tsec = bfd_com_section_ptr;
|
||
else
|
||
tsec = bfd_section_from_elf_index (abfd, isym->st_shndx);
|
||
|
||
toff = isym->st_value;
|
||
dyn_i = get_dyn_sym_info (ia64_info, NULL, abfd, irel, FALSE);
|
||
symtype = ELF_ST_TYPE (isym->st_info);
|
||
}
|
||
else
|
||
{
|
||
unsigned long indx;
|
||
struct elf_link_hash_entry *h;
|
||
|
||
indx = ELFNN_R_SYM (irel->r_info) - symtab_hdr->sh_info;
|
||
h = elf_sym_hashes (abfd)[indx];
|
||
BFD_ASSERT (h != NULL);
|
||
|
||
while (h->root.type == bfd_link_hash_indirect
|
||
|| h->root.type == bfd_link_hash_warning)
|
||
h = (struct elf_link_hash_entry *) h->root.u.i.link;
|
||
|
||
dyn_i = get_dyn_sym_info (ia64_info, h, abfd, irel, FALSE);
|
||
|
||
/* For branches to dynamic symbols, we're interested instead
|
||
in a branch to the PLT entry. */
|
||
if (is_branch && dyn_i && dyn_i->want_plt2)
|
||
{
|
||
/* Internal branches shouldn't be sent to the PLT.
|
||
Leave this for now and we'll give an error later. */
|
||
if (r_type != R_IA64_PCREL21B)
|
||
continue;
|
||
|
||
tsec = ia64_info->root.splt;
|
||
toff = dyn_i->plt2_offset;
|
||
BFD_ASSERT (irel->r_addend == 0);
|
||
}
|
||
|
||
/* Can't do anything else with dynamic symbols. */
|
||
else if (elfNN_ia64_dynamic_symbol_p (h, link_info, r_type))
|
||
continue;
|
||
|
||
else
|
||
{
|
||
/* We can't do anything with undefined symbols. */
|
||
if (h->root.type == bfd_link_hash_undefined
|
||
|| h->root.type == bfd_link_hash_undefweak)
|
||
continue;
|
||
|
||
tsec = h->root.u.def.section;
|
||
toff = h->root.u.def.value;
|
||
}
|
||
|
||
symtype = h->type;
|
||
}
|
||
|
||
if (tsec->sec_info_type == SEC_INFO_TYPE_MERGE)
|
||
{
|
||
/* At this stage in linking, no SEC_MERGE symbol has been
|
||
adjusted, so all references to such symbols need to be
|
||
passed through _bfd_merged_section_offset. (Later, in
|
||
relocate_section, all SEC_MERGE symbols *except* for
|
||
section symbols have been adjusted.)
|
||
|
||
gas may reduce relocations against symbols in SEC_MERGE
|
||
sections to a relocation against the section symbol when
|
||
the original addend was zero. When the reloc is against
|
||
a section symbol we should include the addend in the
|
||
offset passed to _bfd_merged_section_offset, since the
|
||
location of interest is the original symbol. On the
|
||
other hand, an access to "sym+addend" where "sym" is not
|
||
a section symbol should not include the addend; Such an
|
||
access is presumed to be an offset from "sym"; The
|
||
location of interest is just "sym". */
|
||
if (symtype == STT_SECTION)
|
||
toff += irel->r_addend;
|
||
|
||
toff = _bfd_merged_section_offset (abfd, &tsec,
|
||
elf_section_data (tsec)->sec_info,
|
||
toff);
|
||
|
||
if (symtype != STT_SECTION)
|
||
toff += irel->r_addend;
|
||
}
|
||
else
|
||
toff += irel->r_addend;
|
||
|
||
symaddr = tsec->output_section->vma + tsec->output_offset + toff;
|
||
|
||
roff = irel->r_offset;
|
||
|
||
if (is_branch)
|
||
{
|
||
bfd_signed_vma offset;
|
||
|
||
reladdr = (sec->output_section->vma
|
||
+ sec->output_offset
|
||
+ roff) & (bfd_vma) -4;
|
||
|
||
/* The .plt section is aligned at 32byte and the .text section
|
||
is aligned at 64byte. The .text section is right after the
|
||
.plt section. After the first relaxation pass, linker may
|
||
increase the gap between the .plt and .text sections up
|
||
to 32byte. We assume linker will always insert 32byte
|
||
between the .plt and .text sections after the first
|
||
relaxation pass. */
|
||
if (tsec == ia64_info->root.splt)
|
||
offset = -0x1000000 + 32;
|
||
else
|
||
offset = -0x1000000;
|
||
|
||
/* If the branch is in range, no need to do anything. */
|
||
if ((bfd_signed_vma) (symaddr - reladdr) >= offset
|
||
&& (bfd_signed_vma) (symaddr - reladdr) <= 0x0FFFFF0)
|
||
{
|
||
/* If the 60-bit branch is in 21-bit range, optimize it. */
|
||
if (r_type == R_IA64_PCREL60B)
|
||
{
|
||
ia64_elf_relax_brl (contents, roff);
|
||
|
||
irel->r_info
|
||
= ELFNN_R_INFO (ELFNN_R_SYM (irel->r_info),
|
||
R_IA64_PCREL21B);
|
||
|
||
/* If the original relocation offset points to slot
|
||
1, change it to slot 2. */
|
||
if ((irel->r_offset & 3) == 1)
|
||
irel->r_offset += 1;
|
||
}
|
||
|
||
continue;
|
||
}
|
||
else if (r_type == R_IA64_PCREL60B)
|
||
continue;
|
||
else if (ia64_elf_relax_br (contents, roff))
|
||
{
|
||
irel->r_info
|
||
= ELFNN_R_INFO (ELFNN_R_SYM (irel->r_info),
|
||
R_IA64_PCREL60B);
|
||
|
||
/* Make the relocation offset point to slot 1. */
|
||
irel->r_offset = (irel->r_offset & ~((bfd_vma) 0x3)) + 1;
|
||
continue;
|
||
}
|
||
|
||
/* We can't put a trampoline in a .init/.fini section. Issue
|
||
an error. */
|
||
if (strcmp (sec->output_section->name, ".init") == 0
|
||
|| strcmp (sec->output_section->name, ".fini") == 0)
|
||
{
|
||
_bfd_error_handler
|
||
/* xgettext:c-format */
|
||
(_("%B: Can't relax br at %#Lx in section `%A'."
|
||
" Please use brl or indirect branch."),
|
||
sec->owner, roff, sec);
|
||
bfd_set_error (bfd_error_bad_value);
|
||
goto error_return;
|
||
}
|
||
|
||
/* If the branch and target are in the same section, you've
|
||
got one honking big section and we can't help you unless
|
||
you are branching backwards. You'll get an error message
|
||
later. */
|
||
if (tsec == sec && toff > roff)
|
||
continue;
|
||
|
||
/* Look for an existing fixup to this address. */
|
||
for (f = fixups; f ; f = f->next)
|
||
if (f->tsec == tsec && f->toff == toff)
|
||
break;
|
||
|
||
if (f == NULL)
|
||
{
|
||
/* Two alternatives: If it's a branch to a PLT entry, we can
|
||
make a copy of the FULL_PLT entry. Otherwise, we'll have
|
||
to use a `brl' insn to get where we're going. */
|
||
|
||
size_t size;
|
||
|
||
if (tsec == ia64_info->root.splt)
|
||
size = sizeof (plt_full_entry);
|
||
else
|
||
size = oor_branch_size;
|
||
|
||
/* Resize the current section to make room for the new branch. */
|
||
trampoff = (sec->size + 15) & (bfd_vma) -16;
|
||
|
||
/* If trampoline is out of range, there is nothing we
|
||
can do. */
|
||
offset = trampoff - (roff & (bfd_vma) -4);
|
||
if (offset < -0x1000000 || offset > 0x0FFFFF0)
|
||
continue;
|
||
|
||
amt = trampoff + size;
|
||
contents = (bfd_byte *) bfd_realloc (contents, amt);
|
||
if (contents == NULL)
|
||
goto error_return;
|
||
sec->size = amt;
|
||
|
||
if (tsec == ia64_info->root.splt)
|
||
{
|
||
memcpy (contents + trampoff, plt_full_entry, size);
|
||
|
||
/* Hijack the old relocation for use as the PLTOFF reloc. */
|
||
irel->r_info = ELFNN_R_INFO (ELFNN_R_SYM (irel->r_info),
|
||
R_IA64_PLTOFF22);
|
||
irel->r_offset = trampoff;
|
||
}
|
||
else
|
||
{
|
||
if (size == sizeof (oor_ip))
|
||
{
|
||
memcpy (contents + trampoff, oor_ip, size);
|
||
irel->r_info = ELFNN_R_INFO (ELFNN_R_SYM (irel->r_info),
|
||
R_IA64_PCREL64I);
|
||
irel->r_addend -= 16;
|
||
irel->r_offset = trampoff + 2;
|
||
}
|
||
else
|
||
{
|
||
memcpy (contents + trampoff, oor_brl, size);
|
||
irel->r_info = ELFNN_R_INFO (ELFNN_R_SYM (irel->r_info),
|
||
R_IA64_PCREL60B);
|
||
irel->r_offset = trampoff + 2;
|
||
}
|
||
|
||
}
|
||
|
||
/* Record the fixup so we don't do it again this section. */
|
||
f = (struct one_fixup *)
|
||
bfd_malloc ((bfd_size_type) sizeof (*f));
|
||
f->next = fixups;
|
||
f->tsec = tsec;
|
||
f->toff = toff;
|
||
f->trampoff = trampoff;
|
||
fixups = f;
|
||
}
|
||
else
|
||
{
|
||
/* If trampoline is out of range, there is nothing we
|
||
can do. */
|
||
offset = f->trampoff - (roff & (bfd_vma) -4);
|
||
if (offset < -0x1000000 || offset > 0x0FFFFF0)
|
||
continue;
|
||
|
||
/* Nop out the reloc, since we're finalizing things here. */
|
||
irel->r_info = ELFNN_R_INFO (0, R_IA64_NONE);
|
||
}
|
||
|
||
/* Fix up the existing branch to hit the trampoline. */
|
||
if (ia64_elf_install_value (contents + roff, offset, r_type)
|
||
!= bfd_reloc_ok)
|
||
goto error_return;
|
||
|
||
changed_contents = TRUE;
|
||
changed_relocs = TRUE;
|
||
}
|
||
else
|
||
{
|
||
/* Fetch the gp. */
|
||
if (gp == 0)
|
||
{
|
||
bfd *obfd = sec->output_section->owner;
|
||
gp = _bfd_get_gp_value (obfd);
|
||
if (gp == 0)
|
||
{
|
||
if (!elfNN_ia64_choose_gp (obfd, link_info, FALSE))
|
||
goto error_return;
|
||
gp = _bfd_get_gp_value (obfd);
|
||
}
|
||
}
|
||
|
||
/* If the data is out of range, do nothing. */
|
||
if ((bfd_signed_vma) (symaddr - gp) >= 0x200000
|
||
||(bfd_signed_vma) (symaddr - gp) < -0x200000)
|
||
continue;
|
||
|
||
if (r_type == R_IA64_GPREL22)
|
||
elfNN_ia64_update_short_info (tsec->output_section,
|
||
tsec->output_offset + toff,
|
||
ia64_info);
|
||
else if (r_type == R_IA64_LTOFF22X)
|
||
{
|
||
irel->r_info = ELFNN_R_INFO (ELFNN_R_SYM (irel->r_info),
|
||
R_IA64_GPREL22);
|
||
changed_relocs = TRUE;
|
||
if (dyn_i->want_gotx)
|
||
{
|
||
dyn_i->want_gotx = 0;
|
||
changed_got |= !dyn_i->want_got;
|
||
}
|
||
|
||
elfNN_ia64_update_short_info (tsec->output_section,
|
||
tsec->output_offset + toff,
|
||
ia64_info);
|
||
}
|
||
else
|
||
{
|
||
ia64_elf_relax_ldxmov (contents, roff);
|
||
irel->r_info = ELFNN_R_INFO (0, R_IA64_NONE);
|
||
changed_contents = TRUE;
|
||
changed_relocs = TRUE;
|
||
}
|
||
}
|
||
}
|
||
|
||
/* ??? If we created fixups, this may push the code segment large
|
||
enough that the data segment moves, which will change the GP.
|
||
Reset the GP so that we re-calculate next round. We need to
|
||
do this at the _beginning_ of the next round; now will not do. */
|
||
|
||
/* Clean up and go home. */
|
||
while (fixups)
|
||
{
|
||
struct one_fixup *f = fixups;
|
||
fixups = fixups->next;
|
||
free (f);
|
||
}
|
||
|
||
if (isymbuf != NULL
|
||
&& symtab_hdr->contents != (unsigned char *) isymbuf)
|
||
{
|
||
if (! link_info->keep_memory)
|
||
free (isymbuf);
|
||
else
|
||
{
|
||
/* Cache the symbols for elf_link_input_bfd. */
|
||
symtab_hdr->contents = (unsigned char *) isymbuf;
|
||
}
|
||
}
|
||
|
||
if (contents != NULL
|
||
&& elf_section_data (sec)->this_hdr.contents != contents)
|
||
{
|
||
if (!changed_contents && !link_info->keep_memory)
|
||
free (contents);
|
||
else
|
||
{
|
||
/* Cache the section contents for elf_link_input_bfd. */
|
||
elf_section_data (sec)->this_hdr.contents = contents;
|
||
}
|
||
}
|
||
|
||
if (elf_section_data (sec)->relocs != internal_relocs)
|
||
{
|
||
if (!changed_relocs)
|
||
free (internal_relocs);
|
||
else
|
||
elf_section_data (sec)->relocs = internal_relocs;
|
||
}
|
||
|
||
if (changed_got)
|
||
{
|
||
struct elfNN_ia64_allocate_data data;
|
||
data.info = link_info;
|
||
data.ofs = 0;
|
||
ia64_info->self_dtpmod_offset = (bfd_vma) -1;
|
||
|
||
elfNN_ia64_dyn_sym_traverse (ia64_info, allocate_global_data_got, &data);
|
||
elfNN_ia64_dyn_sym_traverse (ia64_info, allocate_global_fptr_got, &data);
|
||
elfNN_ia64_dyn_sym_traverse (ia64_info, allocate_local_got, &data);
|
||
ia64_info->root.sgot->size = data.ofs;
|
||
|
||
if (ia64_info->root.dynamic_sections_created
|
||
&& ia64_info->root.srelgot != NULL)
|
||
{
|
||
/* Resize .rela.got. */
|
||
ia64_info->root.srelgot->size = 0;
|
||
if (bfd_link_pic (link_info)
|
||
&& ia64_info->self_dtpmod_offset != (bfd_vma) -1)
|
||
ia64_info->root.srelgot->size += sizeof (ElfNN_External_Rela);
|
||
data.only_got = TRUE;
|
||
elfNN_ia64_dyn_sym_traverse (ia64_info, allocate_dynrel_entries,
|
||
&data);
|
||
}
|
||
}
|
||
|
||
if (link_info->relax_pass == 0)
|
||
{
|
||
/* Pass 0 is only needed to relax br. */
|
||
sec->skip_relax_pass_0 = skip_relax_pass_0;
|
||
sec->skip_relax_pass_1 = skip_relax_pass_1;
|
||
}
|
||
|
||
*again = changed_contents || changed_relocs;
|
||
return TRUE;
|
||
|
||
error_return:
|
||
if (isymbuf != NULL && (unsigned char *) isymbuf != symtab_hdr->contents)
|
||
free (isymbuf);
|
||
if (contents != NULL
|
||
&& elf_section_data (sec)->this_hdr.contents != contents)
|
||
free (contents);
|
||
if (internal_relocs != NULL
|
||
&& elf_section_data (sec)->relocs != internal_relocs)
|
||
free (internal_relocs);
|
||
return FALSE;
|
||
}
|
||
#undef skip_relax_pass_0
|
||
#undef skip_relax_pass_1
|
||
|
||
/* Return TRUE if NAME is an unwind table section name. */
|
||
|
||
static inline bfd_boolean
|
||
is_unwind_section_name (bfd *abfd, const char *name)
|
||
{
|
||
if (elfNN_ia64_hpux_vec (abfd->xvec)
|
||
&& !strcmp (name, ELF_STRING_ia64_unwind_hdr))
|
||
return FALSE;
|
||
|
||
return ((CONST_STRNEQ (name, ELF_STRING_ia64_unwind)
|
||
&& ! CONST_STRNEQ (name, ELF_STRING_ia64_unwind_info))
|
||
|| CONST_STRNEQ (name, ELF_STRING_ia64_unwind_once));
|
||
}
|
||
|
||
/* Handle an IA-64 specific section when reading an object file. This
|
||
is called when bfd_section_from_shdr finds a section with an unknown
|
||
type. */
|
||
|
||
static bfd_boolean
|
||
elfNN_ia64_section_from_shdr (bfd *abfd,
|
||
Elf_Internal_Shdr *hdr,
|
||
const char *name,
|
||
int shindex)
|
||
{
|
||
/* There ought to be a place to keep ELF backend specific flags, but
|
||
at the moment there isn't one. We just keep track of the
|
||
sections by their name, instead. Fortunately, the ABI gives
|
||
suggested names for all the MIPS specific sections, so we will
|
||
probably get away with this. */
|
||
switch (hdr->sh_type)
|
||
{
|
||
case SHT_IA_64_UNWIND:
|
||
case SHT_IA_64_HP_OPT_ANOT:
|
||
break;
|
||
|
||
case SHT_IA_64_EXT:
|
||
if (strcmp (name, ELF_STRING_ia64_archext) != 0)
|
||
return FALSE;
|
||
break;
|
||
|
||
default:
|
||
return FALSE;
|
||
}
|
||
|
||
if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex))
|
||
return FALSE;
|
||
|
||
return TRUE;
|
||
}
|
||
|
||
/* Convert IA-64 specific section flags to bfd internal section flags. */
|
||
|
||
/* ??? There is no bfd internal flag equivalent to the SHF_IA_64_NORECOV
|
||
flag. */
|
||
|
||
static bfd_boolean
|
||
elfNN_ia64_section_flags (flagword *flags,
|
||
const Elf_Internal_Shdr *hdr)
|
||
{
|
||
if (hdr->sh_flags & SHF_IA_64_SHORT)
|
||
*flags |= SEC_SMALL_DATA;
|
||
|
||
return TRUE;
|
||
}
|
||
|
||
/* Set the correct type for an IA-64 ELF section. We do this by the
|
||
section name, which is a hack, but ought to work. */
|
||
|
||
static bfd_boolean
|
||
elfNN_ia64_fake_sections (bfd *abfd, Elf_Internal_Shdr *hdr,
|
||
asection *sec)
|
||
{
|
||
const char *name;
|
||
|
||
name = bfd_get_section_name (abfd, sec);
|
||
|
||
if (is_unwind_section_name (abfd, name))
|
||
{
|
||
/* We don't have the sections numbered at this point, so sh_info
|
||
is set later, in elfNN_ia64_final_write_processing. */
|
||
hdr->sh_type = SHT_IA_64_UNWIND;
|
||
hdr->sh_flags |= SHF_LINK_ORDER;
|
||
}
|
||
else if (strcmp (name, ELF_STRING_ia64_archext) == 0)
|
||
hdr->sh_type = SHT_IA_64_EXT;
|
||
else if (strcmp (name, ".HP.opt_annot") == 0)
|
||
hdr->sh_type = SHT_IA_64_HP_OPT_ANOT;
|
||
else if (strcmp (name, ".reloc") == 0)
|
||
/* This is an ugly, but unfortunately necessary hack that is
|
||
needed when producing EFI binaries on IA-64. It tells
|
||
elf.c:elf_fake_sections() not to consider ".reloc" as a section
|
||
containing ELF relocation info. We need this hack in order to
|
||
be able to generate ELF binaries that can be translated into
|
||
EFI applications (which are essentially COFF objects). Those
|
||
files contain a COFF ".reloc" section inside an ELFNN object,
|
||
which would normally cause BFD to segfault because it would
|
||
attempt to interpret this section as containing relocation
|
||
entries for section "oc". With this hack enabled, ".reloc"
|
||
will be treated as a normal data section, which will avoid the
|
||
segfault. However, you won't be able to create an ELFNN binary
|
||
with a section named "oc" that needs relocations, but that's
|
||
the kind of ugly side-effects you get when detecting section
|
||
types based on their names... In practice, this limitation is
|
||
unlikely to bite. */
|
||
hdr->sh_type = SHT_PROGBITS;
|
||
|
||
if (sec->flags & SEC_SMALL_DATA)
|
||
hdr->sh_flags |= SHF_IA_64_SHORT;
|
||
|
||
/* Some HP linkers look for the SHF_IA_64_HP_TLS flag instead of SHF_TLS. */
|
||
|
||
if (elfNN_ia64_hpux_vec (abfd->xvec) && (sec->flags & SHF_TLS))
|
||
hdr->sh_flags |= SHF_IA_64_HP_TLS;
|
||
|
||
return TRUE;
|
||
}
|
||
|
||
/* The final processing done just before writing out an IA-64 ELF
|
||
object file. */
|
||
|
||
static void
|
||
elfNN_ia64_final_write_processing (bfd *abfd,
|
||
bfd_boolean linker ATTRIBUTE_UNUSED)
|
||
{
|
||
Elf_Internal_Shdr *hdr;
|
||
asection *s;
|
||
|
||
for (s = abfd->sections; s; s = s->next)
|
||
{
|
||
hdr = &elf_section_data (s)->this_hdr;
|
||
switch (hdr->sh_type)
|
||
{
|
||
case SHT_IA_64_UNWIND:
|
||
/* The IA-64 processor-specific ABI requires setting sh_link
|
||
to the unwind section, whereas HP-UX requires sh_info to
|
||
do so. For maximum compatibility, we'll set both for
|
||
now... */
|
||
hdr->sh_info = hdr->sh_link;
|
||
break;
|
||
}
|
||
}
|
||
|
||
if (! elf_flags_init (abfd))
|
||
{
|
||
unsigned long flags = 0;
|
||
|
||
if (abfd->xvec->byteorder == BFD_ENDIAN_BIG)
|
||
flags |= EF_IA_64_BE;
|
||
if (bfd_get_mach (abfd) == bfd_mach_ia64_elf64)
|
||
flags |= EF_IA_64_ABI64;
|
||
|
||
elf_elfheader(abfd)->e_flags = flags;
|
||
elf_flags_init (abfd) = TRUE;
|
||
}
|
||
}
|
||
|
||
/* Hook called by the linker routine which adds symbols from an object
|
||
file. We use it to put .comm items in .sbss, and not .bss. */
|
||
|
||
static bfd_boolean
|
||
elfNN_ia64_add_symbol_hook (bfd *abfd,
|
||
struct bfd_link_info *info,
|
||
Elf_Internal_Sym *sym,
|
||
const char **namep ATTRIBUTE_UNUSED,
|
||
flagword *flagsp ATTRIBUTE_UNUSED,
|
||
asection **secp,
|
||
bfd_vma *valp)
|
||
{
|
||
if (sym->st_shndx == SHN_COMMON
|
||
&& !bfd_link_relocatable (info)
|
||
&& sym->st_size <= elf_gp_size (abfd))
|
||
{
|
||
/* Common symbols less than or equal to -G nn bytes are
|
||
automatically put into .sbss. */
|
||
|
||
asection *scomm = bfd_get_section_by_name (abfd, ".scommon");
|
||
|
||
if (scomm == NULL)
|
||
{
|
||
scomm = bfd_make_section_with_flags (abfd, ".scommon",
|
||
(SEC_ALLOC
|
||
| SEC_IS_COMMON
|
||
| SEC_LINKER_CREATED));
|
||
if (scomm == NULL)
|
||
return FALSE;
|
||
}
|
||
|
||
*secp = scomm;
|
||
*valp = sym->st_size;
|
||
}
|
||
|
||
return TRUE;
|
||
}
|
||
|
||
/* Return the number of additional phdrs we will need. */
|
||
|
||
static int
|
||
elfNN_ia64_additional_program_headers (bfd *abfd,
|
||
struct bfd_link_info *info ATTRIBUTE_UNUSED)
|
||
{
|
||
asection *s;
|
||
int ret = 0;
|
||
|
||
/* See if we need a PT_IA_64_ARCHEXT segment. */
|
||
s = bfd_get_section_by_name (abfd, ELF_STRING_ia64_archext);
|
||
if (s && (s->flags & SEC_LOAD))
|
||
++ret;
|
||
|
||
/* Count how many PT_IA_64_UNWIND segments we need. */
|
||
for (s = abfd->sections; s; s = s->next)
|
||
if (is_unwind_section_name (abfd, s->name) && (s->flags & SEC_LOAD))
|
||
++ret;
|
||
|
||
return ret;
|
||
}
|
||
|
||
static bfd_boolean
|
||
elfNN_ia64_modify_segment_map (bfd *abfd,
|
||
struct bfd_link_info *info ATTRIBUTE_UNUSED)
|
||
{
|
||
struct elf_segment_map *m, **pm;
|
||
Elf_Internal_Shdr *hdr;
|
||
asection *s;
|
||
|
||
/* If we need a PT_IA_64_ARCHEXT segment, it must come before
|
||
all PT_LOAD segments. */
|
||
s = bfd_get_section_by_name (abfd, ELF_STRING_ia64_archext);
|
||
if (s && (s->flags & SEC_LOAD))
|
||
{
|
||
for (m = elf_seg_map (abfd); m != NULL; m = m->next)
|
||
if (m->p_type == PT_IA_64_ARCHEXT)
|
||
break;
|
||
if (m == NULL)
|
||
{
|
||
m = ((struct elf_segment_map *)
|
||
bfd_zalloc (abfd, (bfd_size_type) sizeof *m));
|
||
if (m == NULL)
|
||
return FALSE;
|
||
|
||
m->p_type = PT_IA_64_ARCHEXT;
|
||
m->count = 1;
|
||
m->sections[0] = s;
|
||
|
||
/* We want to put it after the PHDR and INTERP segments. */
|
||
pm = &elf_seg_map (abfd);
|
||
while (*pm != NULL
|
||
&& ((*pm)->p_type == PT_PHDR
|
||
|| (*pm)->p_type == PT_INTERP))
|
||
pm = &(*pm)->next;
|
||
|
||
m->next = *pm;
|
||
*pm = m;
|
||
}
|
||
}
|
||
|
||
/* Install PT_IA_64_UNWIND segments, if needed. */
|
||
for (s = abfd->sections; s; s = s->next)
|
||
{
|
||
hdr = &elf_section_data (s)->this_hdr;
|
||
if (hdr->sh_type != SHT_IA_64_UNWIND)
|
||
continue;
|
||
|
||
if (s && (s->flags & SEC_LOAD))
|
||
{
|
||
for (m = elf_seg_map (abfd); m != NULL; m = m->next)
|
||
if (m->p_type == PT_IA_64_UNWIND)
|
||
{
|
||
int i;
|
||
|
||
/* Look through all sections in the unwind segment
|
||
for a match since there may be multiple sections
|
||
to a segment. */
|
||
for (i = m->count - 1; i >= 0; --i)
|
||
if (m->sections[i] == s)
|
||
break;
|
||
|
||
if (i >= 0)
|
||
break;
|
||
}
|
||
|
||
if (m == NULL)
|
||
{
|
||
m = ((struct elf_segment_map *)
|
||
bfd_zalloc (abfd, (bfd_size_type) sizeof *m));
|
||
if (m == NULL)
|
||
return FALSE;
|
||
|
||
m->p_type = PT_IA_64_UNWIND;
|
||
m->count = 1;
|
||
m->sections[0] = s;
|
||
m->next = NULL;
|
||
|
||
/* We want to put it last. */
|
||
pm = &elf_seg_map (abfd);
|
||
while (*pm != NULL)
|
||
pm = &(*pm)->next;
|
||
*pm = m;
|
||
}
|
||
}
|
||
}
|
||
|
||
return TRUE;
|
||
}
|
||
|
||
/* Turn on PF_IA_64_NORECOV if needed. This involves traversing all of
|
||
the input sections for each output section in the segment and testing
|
||
for SHF_IA_64_NORECOV on each. */
|
||
|
||
static bfd_boolean
|
||
elfNN_ia64_modify_program_headers (bfd *abfd,
|
||
struct bfd_link_info *info ATTRIBUTE_UNUSED)
|
||
{
|
||
struct elf_obj_tdata *tdata = elf_tdata (abfd);
|
||
struct elf_segment_map *m;
|
||
Elf_Internal_Phdr *p;
|
||
|
||
for (p = tdata->phdr, m = elf_seg_map (abfd); m != NULL; m = m->next, p++)
|
||
if (m->p_type == PT_LOAD)
|
||
{
|
||
int i;
|
||
for (i = m->count - 1; i >= 0; --i)
|
||
{
|
||
struct bfd_link_order *order = m->sections[i]->map_head.link_order;
|
||
|
||
while (order != NULL)
|
||
{
|
||
if (order->type == bfd_indirect_link_order)
|
||
{
|
||
asection *is = order->u.indirect.section;
|
||
bfd_vma flags = elf_section_data(is)->this_hdr.sh_flags;
|
||
if (flags & SHF_IA_64_NORECOV)
|
||
{
|
||
p->p_flags |= PF_IA_64_NORECOV;
|
||
goto found;
|
||
}
|
||
}
|
||
order = order->next;
|
||
}
|
||
}
|
||
found:;
|
||
}
|
||
|
||
return TRUE;
|
||
}
|
||
|
||
/* According to the Tahoe assembler spec, all labels starting with a
|
||
'.' are local. */
|
||
|
||
static bfd_boolean
|
||
elfNN_ia64_is_local_label_name (bfd *abfd ATTRIBUTE_UNUSED,
|
||
const char *name)
|
||
{
|
||
return name[0] == '.';
|
||
}
|
||
|
||
/* Should we do dynamic things to this symbol? */
|
||
|
||
static bfd_boolean
|
||
elfNN_ia64_dynamic_symbol_p (struct elf_link_hash_entry *h,
|
||
struct bfd_link_info *info, int r_type)
|
||
{
|
||
bfd_boolean ignore_protected
|
||
= ((r_type & 0xf8) == 0x40 /* FPTR relocs */
|
||
|| (r_type & 0xf8) == 0x50); /* LTOFF_FPTR relocs */
|
||
|
||
return _bfd_elf_dynamic_symbol_p (h, info, ignore_protected);
|
||
}
|
||
|
||
static struct bfd_hash_entry*
|
||
elfNN_ia64_new_elf_hash_entry (struct bfd_hash_entry *entry,
|
||
struct bfd_hash_table *table,
|
||
const char *string)
|
||
{
|
||
struct elfNN_ia64_link_hash_entry *ret;
|
||
ret = (struct elfNN_ia64_link_hash_entry *) entry;
|
||
|
||
/* Allocate the structure if it has not already been allocated by a
|
||
subclass. */
|
||
if (!ret)
|
||
ret = bfd_hash_allocate (table, sizeof (*ret));
|
||
|
||
if (!ret)
|
||
return 0;
|
||
|
||
/* Call the allocation method of the superclass. */
|
||
ret = ((struct elfNN_ia64_link_hash_entry *)
|
||
_bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret,
|
||
table, string));
|
||
|
||
ret->info = NULL;
|
||
ret->count = 0;
|
||
ret->sorted_count = 0;
|
||
ret->size = 0;
|
||
return (struct bfd_hash_entry *) ret;
|
||
}
|
||
|
||
static void
|
||
elfNN_ia64_hash_copy_indirect (struct bfd_link_info *info,
|
||
struct elf_link_hash_entry *xdir,
|
||
struct elf_link_hash_entry *xind)
|
||
{
|
||
struct elfNN_ia64_link_hash_entry *dir, *ind;
|
||
|
||
dir = (struct elfNN_ia64_link_hash_entry *) xdir;
|
||
ind = (struct elfNN_ia64_link_hash_entry *) xind;
|
||
|
||
/* Copy down any references that we may have already seen to the
|
||
symbol which just became indirect. */
|
||
|
||
if (dir->root.versioned != versioned_hidden)
|
||
dir->root.ref_dynamic |= ind->root.ref_dynamic;
|
||
dir->root.ref_regular |= ind->root.ref_regular;
|
||
dir->root.ref_regular_nonweak |= ind->root.ref_regular_nonweak;
|
||
dir->root.needs_plt |= ind->root.needs_plt;
|
||
|
||
if (ind->root.root.type != bfd_link_hash_indirect)
|
||
return;
|
||
|
||
/* Copy over the got and plt data. This would have been done
|
||
by check_relocs. */
|
||
|
||
if (ind->info != NULL)
|
||
{
|
||
struct elfNN_ia64_dyn_sym_info *dyn_i;
|
||
unsigned int count;
|
||
|
||
if (dir->info)
|
||
free (dir->info);
|
||
|
||
dir->info = ind->info;
|
||
dir->count = ind->count;
|
||
dir->sorted_count = ind->sorted_count;
|
||
dir->size = ind->size;
|
||
|
||
ind->info = NULL;
|
||
ind->count = 0;
|
||
ind->sorted_count = 0;
|
||
ind->size = 0;
|
||
|
||
/* Fix up the dyn_sym_info pointers to the global symbol. */
|
||
for (count = dir->count, dyn_i = dir->info;
|
||
count != 0;
|
||
count--, dyn_i++)
|
||
dyn_i->h = &dir->root;
|
||
}
|
||
|
||
/* Copy over the dynindx. */
|
||
|
||
if (ind->root.dynindx != -1)
|
||
{
|
||
if (dir->root.dynindx != -1)
|
||
_bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
|
||
dir->root.dynstr_index);
|
||
dir->root.dynindx = ind->root.dynindx;
|
||
dir->root.dynstr_index = ind->root.dynstr_index;
|
||
ind->root.dynindx = -1;
|
||
ind->root.dynstr_index = 0;
|
||
}
|
||
}
|
||
|
||
static void
|
||
elfNN_ia64_hash_hide_symbol (struct bfd_link_info *info,
|
||
struct elf_link_hash_entry *xh,
|
||
bfd_boolean force_local)
|
||
{
|
||
struct elfNN_ia64_link_hash_entry *h;
|
||
struct elfNN_ia64_dyn_sym_info *dyn_i;
|
||
unsigned int count;
|
||
|
||
h = (struct elfNN_ia64_link_hash_entry *)xh;
|
||
|
||
_bfd_elf_link_hash_hide_symbol (info, &h->root, force_local);
|
||
|
||
for (count = h->count, dyn_i = h->info;
|
||
count != 0;
|
||
count--, dyn_i++)
|
||
{
|
||
dyn_i->want_plt2 = 0;
|
||
dyn_i->want_plt = 0;
|
||
}
|
||
}
|
||
|
||
/* Compute a hash of a local hash entry. */
|
||
|
||
static hashval_t
|
||
elfNN_ia64_local_htab_hash (const void *ptr)
|
||
{
|
||
struct elfNN_ia64_local_hash_entry *entry
|
||
= (struct elfNN_ia64_local_hash_entry *) ptr;
|
||
|
||
return ELF_LOCAL_SYMBOL_HASH (entry->id, entry->r_sym);
|
||
}
|
||
|
||
/* Compare local hash entries. */
|
||
|
||
static int
|
||
elfNN_ia64_local_htab_eq (const void *ptr1, const void *ptr2)
|
||
{
|
||
struct elfNN_ia64_local_hash_entry *entry1
|
||
= (struct elfNN_ia64_local_hash_entry *) ptr1;
|
||
struct elfNN_ia64_local_hash_entry *entry2
|
||
= (struct elfNN_ia64_local_hash_entry *) ptr2;
|
||
|
||
return entry1->id == entry2->id && entry1->r_sym == entry2->r_sym;
|
||
}
|
||
|
||
/* Free the global elfNN_ia64_dyn_sym_info array. */
|
||
|
||
static bfd_boolean
|
||
elfNN_ia64_global_dyn_info_free (void **xentry,
|
||
void * unused ATTRIBUTE_UNUSED)
|
||
{
|
||
struct elfNN_ia64_link_hash_entry *entry
|
||
= (struct elfNN_ia64_link_hash_entry *) xentry;
|
||
|
||
if (entry->info)
|
||
{
|
||
free (entry->info);
|
||
entry->info = NULL;
|
||
entry->count = 0;
|
||
entry->sorted_count = 0;
|
||
entry->size = 0;
|
||
}
|
||
|
||
return TRUE;
|
||
}
|
||
|
||
/* Free the local elfNN_ia64_dyn_sym_info array. */
|
||
|
||
static bfd_boolean
|
||
elfNN_ia64_local_dyn_info_free (void **slot,
|
||
void * unused ATTRIBUTE_UNUSED)
|
||
{
|
||
struct elfNN_ia64_local_hash_entry *entry
|
||
= (struct elfNN_ia64_local_hash_entry *) *slot;
|
||
|
||
if (entry->info)
|
||
{
|
||
free (entry->info);
|
||
entry->info = NULL;
|
||
entry->count = 0;
|
||
entry->sorted_count = 0;
|
||
entry->size = 0;
|
||
}
|
||
|
||
return TRUE;
|
||
}
|
||
|
||
/* Destroy IA-64 linker hash table. */
|
||
|
||
static void
|
||
elfNN_ia64_link_hash_table_free (bfd *obfd)
|
||
{
|
||
struct elfNN_ia64_link_hash_table *ia64_info
|
||
= (struct elfNN_ia64_link_hash_table *) obfd->link.hash;
|
||
if (ia64_info->loc_hash_table)
|
||
{
|
||
htab_traverse (ia64_info->loc_hash_table,
|
||
elfNN_ia64_local_dyn_info_free, NULL);
|
||
htab_delete (ia64_info->loc_hash_table);
|
||
}
|
||
if (ia64_info->loc_hash_memory)
|
||
objalloc_free ((struct objalloc *) ia64_info->loc_hash_memory);
|
||
elf_link_hash_traverse (&ia64_info->root,
|
||
elfNN_ia64_global_dyn_info_free, NULL);
|
||
_bfd_elf_link_hash_table_free (obfd);
|
||
}
|
||
|
||
/* Create the derived linker hash table. The IA-64 ELF port uses this
|
||
derived hash table to keep information specific to the IA-64 ElF
|
||
linker (without using static variables). */
|
||
|
||
static struct bfd_link_hash_table *
|
||
elfNN_ia64_hash_table_create (bfd *abfd)
|
||
{
|
||
struct elfNN_ia64_link_hash_table *ret;
|
||
|
||
ret = bfd_zmalloc ((bfd_size_type) sizeof (*ret));
|
||
if (!ret)
|
||
return NULL;
|
||
|
||
if (!_bfd_elf_link_hash_table_init (&ret->root, abfd,
|
||
elfNN_ia64_new_elf_hash_entry,
|
||
sizeof (struct elfNN_ia64_link_hash_entry),
|
||
IA64_ELF_DATA))
|
||
{
|
||
free (ret);
|
||
return NULL;
|
||
}
|
||
|
||
ret->loc_hash_table = htab_try_create (1024, elfNN_ia64_local_htab_hash,
|
||
elfNN_ia64_local_htab_eq, NULL);
|
||
ret->loc_hash_memory = objalloc_create ();
|
||
if (!ret->loc_hash_table || !ret->loc_hash_memory)
|
||
{
|
||
elfNN_ia64_link_hash_table_free (abfd);
|
||
return NULL;
|
||
}
|
||
ret->root.root.hash_table_free = elfNN_ia64_link_hash_table_free;
|
||
|
||
return &ret->root.root;
|
||
}
|
||
|
||
/* Traverse both local and global hash tables. */
|
||
|
||
struct elfNN_ia64_dyn_sym_traverse_data
|
||
{
|
||
bfd_boolean (*func) (struct elfNN_ia64_dyn_sym_info *, void *);
|
||
void * data;
|
||
};
|
||
|
||
static bfd_boolean
|
||
elfNN_ia64_global_dyn_sym_thunk (struct bfd_hash_entry *xentry,
|
||
void * xdata)
|
||
{
|
||
struct elfNN_ia64_link_hash_entry *entry
|
||
= (struct elfNN_ia64_link_hash_entry *) xentry;
|
||
struct elfNN_ia64_dyn_sym_traverse_data *data
|
||
= (struct elfNN_ia64_dyn_sym_traverse_data *) xdata;
|
||
struct elfNN_ia64_dyn_sym_info *dyn_i;
|
||
unsigned int count;
|
||
|
||
for (count = entry->count, dyn_i = entry->info;
|
||
count != 0;
|
||
count--, dyn_i++)
|
||
if (! (*data->func) (dyn_i, data->data))
|
||
return FALSE;
|
||
return TRUE;
|
||
}
|
||
|
||
static bfd_boolean
|
||
elfNN_ia64_local_dyn_sym_thunk (void **slot, void * xdata)
|
||
{
|
||
struct elfNN_ia64_local_hash_entry *entry
|
||
= (struct elfNN_ia64_local_hash_entry *) *slot;
|
||
struct elfNN_ia64_dyn_sym_traverse_data *data
|
||
= (struct elfNN_ia64_dyn_sym_traverse_data *) xdata;
|
||
struct elfNN_ia64_dyn_sym_info *dyn_i;
|
||
unsigned int count;
|
||
|
||
for (count = entry->count, dyn_i = entry->info;
|
||
count != 0;
|
||
count--, dyn_i++)
|
||
if (! (*data->func) (dyn_i, data->data))
|
||
return FALSE;
|
||
return TRUE;
|
||
}
|
||
|
||
static void
|
||
elfNN_ia64_dyn_sym_traverse (struct elfNN_ia64_link_hash_table *ia64_info,
|
||
bfd_boolean (*func) (struct elfNN_ia64_dyn_sym_info *, void *),
|
||
void * data)
|
||
{
|
||
struct elfNN_ia64_dyn_sym_traverse_data xdata;
|
||
|
||
xdata.func = func;
|
||
xdata.data = data;
|
||
|
||
elf_link_hash_traverse (&ia64_info->root,
|
||
elfNN_ia64_global_dyn_sym_thunk, &xdata);
|
||
htab_traverse (ia64_info->loc_hash_table,
|
||
elfNN_ia64_local_dyn_sym_thunk, &xdata);
|
||
}
|
||
|
||
static bfd_boolean
|
||
elfNN_ia64_create_dynamic_sections (bfd *abfd,
|
||
struct bfd_link_info *info)
|
||
{
|
||
struct elfNN_ia64_link_hash_table *ia64_info;
|
||
asection *s;
|
||
|
||
if (! _bfd_elf_create_dynamic_sections (abfd, info))
|
||
return FALSE;
|
||
|
||
ia64_info = elfNN_ia64_hash_table (info);
|
||
if (ia64_info == NULL)
|
||
return FALSE;
|
||
|
||
{
|
||
flagword flags = bfd_get_section_flags (abfd, ia64_info->root.sgot);
|
||
bfd_set_section_flags (abfd, ia64_info->root.sgot,
|
||
SEC_SMALL_DATA | flags);
|
||
/* The .got section is always aligned at 8 bytes. */
|
||
if (! bfd_set_section_alignment (abfd, ia64_info->root.sgot, 3))
|
||
return FALSE;
|
||
}
|
||
|
||
if (!get_pltoff (abfd, info, ia64_info))
|
||
return FALSE;
|
||
|
||
s = bfd_make_section_anyway_with_flags (abfd, ".rela.IA_64.pltoff",
|
||
(SEC_ALLOC | SEC_LOAD
|
||
| SEC_HAS_CONTENTS
|
||
| SEC_IN_MEMORY
|
||
| SEC_LINKER_CREATED
|
||
| SEC_READONLY));
|
||
if (s == NULL
|
||
|| !bfd_set_section_alignment (abfd, s, LOG_SECTION_ALIGN))
|
||
return FALSE;
|
||
ia64_info->rel_pltoff_sec = s;
|
||
|
||
return TRUE;
|
||
}
|
||
|
||
/* Find and/or create a hash entry for local symbol. */
|
||
static struct elfNN_ia64_local_hash_entry *
|
||
get_local_sym_hash (struct elfNN_ia64_link_hash_table *ia64_info,
|
||
bfd *abfd, const Elf_Internal_Rela *rel,
|
||
bfd_boolean create)
|
||
{
|
||
struct elfNN_ia64_local_hash_entry e, *ret;
|
||
asection *sec = abfd->sections;
|
||
hashval_t h = ELF_LOCAL_SYMBOL_HASH (sec->id,
|
||
ELFNN_R_SYM (rel->r_info));
|
||
void **slot;
|
||
|
||
e.id = sec->id;
|
||
e.r_sym = ELFNN_R_SYM (rel->r_info);
|
||
slot = htab_find_slot_with_hash (ia64_info->loc_hash_table, &e, h,
|
||
create ? INSERT : NO_INSERT);
|
||
|
||
if (!slot)
|
||
return NULL;
|
||
|
||
if (*slot)
|
||
return (struct elfNN_ia64_local_hash_entry *) *slot;
|
||
|
||
ret = (struct elfNN_ia64_local_hash_entry *)
|
||
objalloc_alloc ((struct objalloc *) ia64_info->loc_hash_memory,
|
||
sizeof (struct elfNN_ia64_local_hash_entry));
|
||
if (ret)
|
||
{
|
||
memset (ret, 0, sizeof (*ret));
|
||
ret->id = sec->id;
|
||
ret->r_sym = ELFNN_R_SYM (rel->r_info);
|
||
*slot = ret;
|
||
}
|
||
return ret;
|
||
}
|
||
|
||
/* Used to sort elfNN_ia64_dyn_sym_info array. */
|
||
|
||
static int
|
||
addend_compare (const void *xp, const void *yp)
|
||
{
|
||
const struct elfNN_ia64_dyn_sym_info *x
|
||
= (const struct elfNN_ia64_dyn_sym_info *) xp;
|
||
const struct elfNN_ia64_dyn_sym_info *y
|
||
= (const struct elfNN_ia64_dyn_sym_info *) yp;
|
||
|
||
return x->addend < y->addend ? -1 : x->addend > y->addend ? 1 : 0;
|
||
}
|
||
|
||
/* Sort elfNN_ia64_dyn_sym_info array and remove duplicates. */
|
||
|
||
static unsigned int
|
||
sort_dyn_sym_info (struct elfNN_ia64_dyn_sym_info *info,
|
||
unsigned int count)
|
||
{
|
||
bfd_vma curr, prev, got_offset;
|
||
unsigned int i, kept, dupes, diff, dest, src, len;
|
||
|
||
qsort (info, count, sizeof (*info), addend_compare);
|
||
|
||
/* Find the first duplicate. */
|
||
prev = info [0].addend;
|
||
got_offset = info [0].got_offset;
|
||
for (i = 1; i < count; i++)
|
||
{
|
||
curr = info [i].addend;
|
||
if (curr == prev)
|
||
{
|
||
/* For duplicates, make sure that GOT_OFFSET is valid. */
|
||
if (got_offset == (bfd_vma) -1)
|
||
got_offset = info [i].got_offset;
|
||
break;
|
||
}
|
||
got_offset = info [i].got_offset;
|
||
prev = curr;
|
||
}
|
||
|
||
/* We may move a block of elements to here. */
|
||
dest = i++;
|
||
|
||
/* Remove duplicates. */
|
||
if (i < count)
|
||
{
|
||
while (i < count)
|
||
{
|
||
/* For duplicates, make sure that the kept one has a valid
|
||
got_offset. */
|
||
kept = dest - 1;
|
||
if (got_offset != (bfd_vma) -1)
|
||
info [kept].got_offset = got_offset;
|
||
|
||
curr = info [i].addend;
|
||
got_offset = info [i].got_offset;
|
||
|
||
/* Move a block of elements whose first one is different from
|
||
the previous. */
|
||
if (curr == prev)
|
||
{
|
||
for (src = i + 1; src < count; src++)
|
||
{
|
||
if (info [src].addend != curr)
|
||
break;
|
||
/* For duplicates, make sure that GOT_OFFSET is
|
||
valid. */
|
||
if (got_offset == (bfd_vma) -1)
|
||
got_offset = info [src].got_offset;
|
||
}
|
||
|
||
/* Make sure that the kept one has a valid got_offset. */
|
||
if (got_offset != (bfd_vma) -1)
|
||
info [kept].got_offset = got_offset;
|
||
}
|
||
else
|
||
src = i;
|
||
|
||
if (src >= count)
|
||
break;
|
||
|
||
/* Find the next duplicate. SRC will be kept. */
|
||
prev = info [src].addend;
|
||
got_offset = info [src].got_offset;
|
||
for (dupes = src + 1; dupes < count; dupes ++)
|
||
{
|
||
curr = info [dupes].addend;
|
||
if (curr == prev)
|
||
{
|
||
/* Make sure that got_offset is valid. */
|
||
if (got_offset == (bfd_vma) -1)
|
||
got_offset = info [dupes].got_offset;
|
||
|
||
/* For duplicates, make sure that the kept one has
|
||
a valid got_offset. */
|
||
if (got_offset != (bfd_vma) -1)
|
||
info [dupes - 1].got_offset = got_offset;
|
||
break;
|
||
}
|
||
got_offset = info [dupes].got_offset;
|
||
prev = curr;
|
||
}
|
||
|
||
/* How much to move. */
|
||
len = dupes - src;
|
||
i = dupes + 1;
|
||
|
||
if (len == 1 && dupes < count)
|
||
{
|
||
/* If we only move 1 element, we combine it with the next
|
||
one. There must be at least a duplicate. Find the
|
||
next different one. */
|
||
for (diff = dupes + 1, src++; diff < count; diff++, src++)
|
||
{
|
||
if (info [diff].addend != curr)
|
||
break;
|
||
/* Make sure that got_offset is valid. */
|
||
if (got_offset == (bfd_vma) -1)
|
||
got_offset = info [diff].got_offset;
|
||
}
|
||
|
||
/* Makre sure that the last duplicated one has an valid
|
||
offset. */
|
||
BFD_ASSERT (curr == prev);
|
||
if (got_offset != (bfd_vma) -1)
|
||
info [diff - 1].got_offset = got_offset;
|
||
|
||
if (diff < count)
|
||
{
|
||
/* Find the next duplicate. Track the current valid
|
||
offset. */
|
||
prev = info [diff].addend;
|
||
got_offset = info [diff].got_offset;
|
||
for (dupes = diff + 1; dupes < count; dupes ++)
|
||
{
|
||
curr = info [dupes].addend;
|
||
if (curr == prev)
|
||
{
|
||
/* For duplicates, make sure that GOT_OFFSET
|
||
is valid. */
|
||
if (got_offset == (bfd_vma) -1)
|
||
got_offset = info [dupes].got_offset;
|
||
break;
|
||
}
|
||
got_offset = info [dupes].got_offset;
|
||
prev = curr;
|
||
diff++;
|
||
}
|
||
|
||
len = diff - src + 1;
|
||
i = diff + 1;
|
||
}
|
||
}
|
||
|
||
memmove (&info [dest], &info [src], len * sizeof (*info));
|
||
|
||
dest += len;
|
||
}
|
||
|
||
count = dest;
|
||
}
|
||
else
|
||
{
|
||
/* When we get here, either there is no duplicate at all or
|
||
the only duplicate is the last element. */
|
||
if (dest < count)
|
||
{
|
||
/* If the last element is a duplicate, make sure that the
|
||
kept one has a valid got_offset. We also update count. */
|
||
if (got_offset != (bfd_vma) -1)
|
||
info [dest - 1].got_offset = got_offset;
|
||
count = dest;
|
||
}
|
||
}
|
||
|
||
return count;
|
||
}
|
||
|
||
/* Find and/or create a descriptor for dynamic symbol info. This will
|
||
vary based on global or local symbol, and the addend to the reloc.
|
||
|
||
We don't sort when inserting. Also, we sort and eliminate
|
||
duplicates if there is an unsorted section. Typically, this will
|
||
only happen once, because we do all insertions before lookups. We
|
||
then use bsearch to do a lookup. This also allows lookups to be
|
||
fast. So we have fast insertion (O(log N) due to duplicate check),
|
||
fast lookup (O(log N)) and one sort (O(N log N) expected time).
|
||
Previously, all lookups were O(N) because of the use of the linked
|
||
list and also all insertions were O(N) because of the check for
|
||
duplicates. There are some complications here because the array
|
||
size grows occasionally, which may add an O(N) factor, but this
|
||
should be rare. Also, we free the excess array allocation, which
|
||
requires a copy which is O(N), but this only happens once. */
|
||
|
||
static struct elfNN_ia64_dyn_sym_info *
|
||
get_dyn_sym_info (struct elfNN_ia64_link_hash_table *ia64_info,
|
||
struct elf_link_hash_entry *h, bfd *abfd,
|
||
const Elf_Internal_Rela *rel, bfd_boolean create)
|
||
{
|
||
struct elfNN_ia64_dyn_sym_info **info_p, *info, *dyn_i, key;
|
||
unsigned int *count_p, *sorted_count_p, *size_p;
|
||
unsigned int count, sorted_count, size;
|
||
bfd_vma addend = rel ? rel->r_addend : 0;
|
||
bfd_size_type amt;
|
||
|
||
if (h)
|
||
{
|
||
struct elfNN_ia64_link_hash_entry *global_h;
|
||
|
||
global_h = (struct elfNN_ia64_link_hash_entry *) h;
|
||
info_p = &global_h->info;
|
||
count_p = &global_h->count;
|
||
sorted_count_p = &global_h->sorted_count;
|
||
size_p = &global_h->size;
|
||
}
|
||
else
|
||
{
|
||
struct elfNN_ia64_local_hash_entry *loc_h;
|
||
|
||
loc_h = get_local_sym_hash (ia64_info, abfd, rel, create);
|
||
if (!loc_h)
|
||
{
|
||
BFD_ASSERT (!create);
|
||
return NULL;
|
||
}
|
||
|
||
info_p = &loc_h->info;
|
||
count_p = &loc_h->count;
|
||
sorted_count_p = &loc_h->sorted_count;
|
||
size_p = &loc_h->size;
|
||
}
|
||
|
||
count = *count_p;
|
||
sorted_count = *sorted_count_p;
|
||
size = *size_p;
|
||
info = *info_p;
|
||
if (create)
|
||
{
|
||
/* When we create the array, we don't check for duplicates,
|
||
except in the previously sorted section if one exists, and
|
||
against the last inserted entry. This allows insertions to
|
||
be fast. */
|
||
if (info)
|
||
{
|
||
if (sorted_count)
|
||
{
|
||
/* Try bsearch first on the sorted section. */
|
||
key.addend = addend;
|
||
dyn_i = bsearch (&key, info, sorted_count,
|
||
sizeof (*info), addend_compare);
|
||
|
||
if (dyn_i)
|
||
{
|
||
return dyn_i;
|
||
}
|
||
}
|
||
|
||
/* Do a quick check for the last inserted entry. */
|
||
dyn_i = info + count - 1;
|
||
if (dyn_i->addend == addend)
|
||
{
|
||
return dyn_i;
|
||
}
|
||
}
|
||
|
||
if (size == 0)
|
||
{
|
||
/* It is the very first element. We create the array of size
|
||
1. */
|
||
size = 1;
|
||
amt = size * sizeof (*info);
|
||
info = bfd_malloc (amt);
|
||
}
|
||
else if (size <= count)
|
||
{
|
||
/* We double the array size every time when we reach the
|
||
size limit. */
|
||
size += size;
|
||
amt = size * sizeof (*info);
|
||
info = bfd_realloc (info, amt);
|
||
}
|
||
else
|
||
goto has_space;
|
||
|
||
if (info == NULL)
|
||
return NULL;
|
||
*size_p = size;
|
||
*info_p = info;
|
||
|
||
has_space:
|
||
/* Append the new one to the array. */
|
||
dyn_i = info + count;
|
||
memset (dyn_i, 0, sizeof (*dyn_i));
|
||
dyn_i->got_offset = (bfd_vma) -1;
|
||
dyn_i->addend = addend;
|
||
|
||
/* We increment count only since the new ones are unsorted and
|
||
may have duplicate. */
|
||
(*count_p)++;
|
||
}
|
||
else
|
||
{
|
||
/* It is a lookup without insertion. Sort array if part of the
|
||
array isn't sorted. */
|
||
if (count != sorted_count)
|
||
{
|
||
count = sort_dyn_sym_info (info, count);
|
||
*count_p = count;
|
||
*sorted_count_p = count;
|
||
}
|
||
|
||
/* Free unused memory. */
|
||
if (size != count)
|
||
{
|
||
amt = count * sizeof (*info);
|
||
info = bfd_malloc (amt);
|
||
if (info != NULL)
|
||
{
|
||
memcpy (info, *info_p, amt);
|
||
free (*info_p);
|
||
*size_p = count;
|
||
*info_p = info;
|
||
}
|
||
}
|
||
|
||
key.addend = addend;
|
||
dyn_i = bsearch (&key, info, count,
|
||
sizeof (*info), addend_compare);
|
||
}
|
||
|
||
return dyn_i;
|
||
}
|
||
|
||
static asection *
|
||
get_got (bfd *abfd, struct bfd_link_info *info,
|
||
struct elfNN_ia64_link_hash_table *ia64_info)
|
||
{
|
||
asection *got;
|
||
bfd *dynobj;
|
||
|
||
got = ia64_info->root.sgot;
|
||
if (!got)
|
||
{
|
||
flagword flags;
|
||
|
||
dynobj = ia64_info->root.dynobj;
|
||
if (!dynobj)
|
||
ia64_info->root.dynobj = dynobj = abfd;
|
||
if (!_bfd_elf_create_got_section (dynobj, info))
|
||
return NULL;
|
||
|
||
got = ia64_info->root.sgot;
|
||
|
||
/* The .got section is always aligned at 8 bytes. */
|
||
if (!bfd_set_section_alignment (abfd, got, 3))
|
||
return NULL;
|
||
|
||
flags = bfd_get_section_flags (abfd, got);
|
||
if (! bfd_set_section_flags (abfd, got, SEC_SMALL_DATA | flags))
|
||
return NULL;
|
||
}
|
||
|
||
return got;
|
||
}
|
||
|
||
/* Create function descriptor section (.opd). This section is called .opd
|
||
because it contains "official procedure descriptors". The "official"
|
||
refers to the fact that these descriptors are used when taking the address
|
||
of a procedure, thus ensuring a unique address for each procedure. */
|
||
|
||
static asection *
|
||
get_fptr (bfd *abfd, struct bfd_link_info *info,
|
||
struct elfNN_ia64_link_hash_table *ia64_info)
|
||
{
|
||
asection *fptr;
|
||
bfd *dynobj;
|
||
|
||
fptr = ia64_info->fptr_sec;
|
||
if (!fptr)
|
||
{
|
||
dynobj = ia64_info->root.dynobj;
|
||
if (!dynobj)
|
||
ia64_info->root.dynobj = dynobj = abfd;
|
||
|
||
fptr = bfd_make_section_anyway_with_flags (dynobj, ".opd",
|
||
(SEC_ALLOC
|
||
| SEC_LOAD
|
||
| SEC_HAS_CONTENTS
|
||
| SEC_IN_MEMORY
|
||
| (bfd_link_pie (info)
|
||
? 0 : SEC_READONLY)
|
||
| SEC_LINKER_CREATED));
|
||
if (!fptr
|
||
|| !bfd_set_section_alignment (abfd, fptr, 4))
|
||
{
|
||
BFD_ASSERT (0);
|
||
return NULL;
|
||
}
|
||
|
||
ia64_info->fptr_sec = fptr;
|
||
|
||
if (bfd_link_pie (info))
|
||
{
|
||
asection *fptr_rel;
|
||
fptr_rel = bfd_make_section_anyway_with_flags (dynobj, ".rela.opd",
|
||
(SEC_ALLOC | SEC_LOAD
|
||
| SEC_HAS_CONTENTS
|
||
| SEC_IN_MEMORY
|
||
| SEC_LINKER_CREATED
|
||
| SEC_READONLY));
|
||
if (fptr_rel == NULL
|
||
|| !bfd_set_section_alignment (abfd, fptr_rel,
|
||
LOG_SECTION_ALIGN))
|
||
{
|
||
BFD_ASSERT (0);
|
||
return NULL;
|
||
}
|
||
|
||
ia64_info->rel_fptr_sec = fptr_rel;
|
||
}
|
||
}
|
||
|
||
return fptr;
|
||
}
|
||
|
||
static asection *
|
||
get_pltoff (bfd *abfd, struct bfd_link_info *info ATTRIBUTE_UNUSED,
|
||
struct elfNN_ia64_link_hash_table *ia64_info)
|
||
{
|
||
asection *pltoff;
|
||
bfd *dynobj;
|
||
|
||
pltoff = ia64_info->pltoff_sec;
|
||
if (!pltoff)
|
||
{
|
||
dynobj = ia64_info->root.dynobj;
|
||
if (!dynobj)
|
||
ia64_info->root.dynobj = dynobj = abfd;
|
||
|
||
pltoff = bfd_make_section_anyway_with_flags (dynobj,
|
||
ELF_STRING_ia64_pltoff,
|
||
(SEC_ALLOC
|
||
| SEC_LOAD
|
||
| SEC_HAS_CONTENTS
|
||
| SEC_IN_MEMORY
|
||
| SEC_SMALL_DATA
|
||
| SEC_LINKER_CREATED));
|
||
if (!pltoff
|
||
|| !bfd_set_section_alignment (abfd, pltoff, 4))
|
||
{
|
||
BFD_ASSERT (0);
|
||
return NULL;
|
||
}
|
||
|
||
ia64_info->pltoff_sec = pltoff;
|
||
}
|
||
|
||
return pltoff;
|
||
}
|
||
|
||
static asection *
|
||
get_reloc_section (bfd *abfd,
|
||
struct elfNN_ia64_link_hash_table *ia64_info,
|
||
asection *sec, bfd_boolean create)
|
||
{
|
||
const char *srel_name;
|
||
asection *srel;
|
||
bfd *dynobj;
|
||
|
||
srel_name = (bfd_elf_string_from_elf_section
|
||
(abfd, elf_elfheader(abfd)->e_shstrndx,
|
||
_bfd_elf_single_rel_hdr (sec)->sh_name));
|
||
if (srel_name == NULL)
|
||
return NULL;
|
||
|
||
dynobj = ia64_info->root.dynobj;
|
||
if (!dynobj)
|
||
ia64_info->root.dynobj = dynobj = abfd;
|
||
|
||
srel = bfd_get_linker_section (dynobj, srel_name);
|
||
if (srel == NULL && create)
|
||
{
|
||
srel = bfd_make_section_anyway_with_flags (dynobj, srel_name,
|
||
(SEC_ALLOC | SEC_LOAD
|
||
| SEC_HAS_CONTENTS
|
||
| SEC_IN_MEMORY
|
||
| SEC_LINKER_CREATED
|
||
| SEC_READONLY));
|
||
if (srel == NULL
|
||
|| !bfd_set_section_alignment (dynobj, srel,
|
||
LOG_SECTION_ALIGN))
|
||
return NULL;
|
||
}
|
||
|
||
return srel;
|
||
}
|
||
|
||
static bfd_boolean
|
||
count_dyn_reloc (bfd *abfd, struct elfNN_ia64_dyn_sym_info *dyn_i,
|
||
asection *srel, int type, bfd_boolean reltext)
|
||
{
|
||
struct elfNN_ia64_dyn_reloc_entry *rent;
|
||
|
||
for (rent = dyn_i->reloc_entries; rent; rent = rent->next)
|
||
if (rent->srel == srel && rent->type == type)
|
||
break;
|
||
|
||
if (!rent)
|
||
{
|
||
rent = ((struct elfNN_ia64_dyn_reloc_entry *)
|
||
bfd_alloc (abfd, (bfd_size_type) sizeof (*rent)));
|
||
if (!rent)
|
||
return FALSE;
|
||
|
||
rent->next = dyn_i->reloc_entries;
|
||
rent->srel = srel;
|
||
rent->type = type;
|
||
rent->count = 0;
|
||
dyn_i->reloc_entries = rent;
|
||
}
|
||
rent->reltext = reltext;
|
||
rent->count++;
|
||
|
||
return TRUE;
|
||
}
|
||
|
||
static bfd_boolean
|
||
elfNN_ia64_check_relocs (bfd *abfd, struct bfd_link_info *info,
|
||
asection *sec,
|
||
const Elf_Internal_Rela *relocs)
|
||
{
|
||
struct elfNN_ia64_link_hash_table *ia64_info;
|
||
const Elf_Internal_Rela *relend;
|
||
Elf_Internal_Shdr *symtab_hdr;
|
||
const Elf_Internal_Rela *rel;
|
||
asection *got, *fptr, *srel, *pltoff;
|
||
enum {
|
||
NEED_GOT = 1,
|
||
NEED_GOTX = 2,
|
||
NEED_FPTR = 4,
|
||
NEED_PLTOFF = 8,
|
||
NEED_MIN_PLT = 16,
|
||
NEED_FULL_PLT = 32,
|
||
NEED_DYNREL = 64,
|
||
NEED_LTOFF_FPTR = 128,
|
||
NEED_TPREL = 256,
|
||
NEED_DTPMOD = 512,
|
||
NEED_DTPREL = 1024
|
||
};
|
||
int need_entry;
|
||
struct elf_link_hash_entry *h;
|
||
unsigned long r_symndx;
|
||
bfd_boolean maybe_dynamic;
|
||
|
||
if (bfd_link_relocatable (info))
|
||
return TRUE;
|
||
|
||
symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
|
||
ia64_info = elfNN_ia64_hash_table (info);
|
||
if (ia64_info == NULL)
|
||
return FALSE;
|
||
|
||
got = fptr = srel = pltoff = NULL;
|
||
|
||
relend = relocs + sec->reloc_count;
|
||
|
||
/* We scan relocations first to create dynamic relocation arrays. We
|
||
modified get_dyn_sym_info to allow fast insertion and support fast
|
||
lookup in the next loop. */
|
||
for (rel = relocs; rel < relend; ++rel)
|
||
{
|
||
r_symndx = ELFNN_R_SYM (rel->r_info);
|
||
if (r_symndx >= symtab_hdr->sh_info)
|
||
{
|
||
long indx = r_symndx - symtab_hdr->sh_info;
|
||
h = elf_sym_hashes (abfd)[indx];
|
||
while (h->root.type == bfd_link_hash_indirect
|
||
|| h->root.type == bfd_link_hash_warning)
|
||
h = (struct elf_link_hash_entry *) h->root.u.i.link;
|
||
}
|
||
else
|
||
h = NULL;
|
||
|
||
if (h && UNDEFWEAK_NO_DYNAMIC_RELOC (info, h))
|
||
continue;
|
||
|
||
/* We can only get preliminary data on whether a symbol is
|
||
locally or externally defined, as not all of the input files
|
||
have yet been processed. Do something with what we know, as
|
||
this may help reduce memory usage and processing time later. */
|
||
maybe_dynamic = (h && ((!bfd_link_executable (info)
|
||
&& (!SYMBOLIC_BIND (info, h)
|
||
|| info->unresolved_syms_in_shared_libs == RM_IGNORE))
|
||
|| !h->def_regular
|
||
|| h->root.type == bfd_link_hash_defweak));
|
||
|
||
need_entry = 0;
|
||
switch (ELFNN_R_TYPE (rel->r_info))
|
||
{
|
||
case R_IA64_TPREL64MSB:
|
||
case R_IA64_TPREL64LSB:
|
||
if (bfd_link_pic (info) || maybe_dynamic)
|
||
need_entry = NEED_DYNREL;
|
||
break;
|
||
|
||
case R_IA64_LTOFF_TPREL22:
|
||
need_entry = NEED_TPREL;
|
||
if (bfd_link_pic (info))
|
||
info->flags |= DF_STATIC_TLS;
|
||
break;
|
||
|
||
case R_IA64_DTPREL32MSB:
|
||
case R_IA64_DTPREL32LSB:
|
||
case R_IA64_DTPREL64MSB:
|
||
case R_IA64_DTPREL64LSB:
|
||
if (bfd_link_pic (info) || maybe_dynamic)
|
||
need_entry = NEED_DYNREL;
|
||
break;
|
||
|
||
case R_IA64_LTOFF_DTPREL22:
|
||
need_entry = NEED_DTPREL;
|
||
break;
|
||
|
||
case R_IA64_DTPMOD64MSB:
|
||
case R_IA64_DTPMOD64LSB:
|
||
if (bfd_link_pic (info) || maybe_dynamic)
|
||
need_entry = NEED_DYNREL;
|
||
break;
|
||
|
||
case R_IA64_LTOFF_DTPMOD22:
|
||
need_entry = NEED_DTPMOD;
|
||
break;
|
||
|
||
case R_IA64_LTOFF_FPTR22:
|
||
case R_IA64_LTOFF_FPTR64I:
|
||
case R_IA64_LTOFF_FPTR32MSB:
|
||
case R_IA64_LTOFF_FPTR32LSB:
|
||
case R_IA64_LTOFF_FPTR64MSB:
|
||
case R_IA64_LTOFF_FPTR64LSB:
|
||
need_entry = NEED_FPTR | NEED_GOT | NEED_LTOFF_FPTR;
|
||
break;
|
||
|
||
case R_IA64_FPTR64I:
|
||
case R_IA64_FPTR32MSB:
|
||
case R_IA64_FPTR32LSB:
|
||
case R_IA64_FPTR64MSB:
|
||
case R_IA64_FPTR64LSB:
|
||
if (bfd_link_pic (info) || h)
|
||
need_entry = NEED_FPTR | NEED_DYNREL;
|
||
else
|
||
need_entry = NEED_FPTR;
|
||
break;
|
||
|
||
case R_IA64_LTOFF22:
|
||
case R_IA64_LTOFF64I:
|
||
need_entry = NEED_GOT;
|
||
break;
|
||
|
||
case R_IA64_LTOFF22X:
|
||
need_entry = NEED_GOTX;
|
||
break;
|
||
|
||
case R_IA64_PLTOFF22:
|
||
case R_IA64_PLTOFF64I:
|
||
case R_IA64_PLTOFF64MSB:
|
||
case R_IA64_PLTOFF64LSB:
|
||
need_entry = NEED_PLTOFF;
|
||
if (h)
|
||
{
|
||
if (maybe_dynamic)
|
||
need_entry |= NEED_MIN_PLT;
|
||
}
|
||
else
|
||
{
|
||
(*info->callbacks->warning)
|
||
(info, _("@pltoff reloc against local symbol"), 0,
|
||
abfd, 0, (bfd_vma) 0);
|
||
}
|
||
break;
|
||
|
||
case R_IA64_PCREL21B:
|
||
case R_IA64_PCREL60B:
|
||
/* Depending on where this symbol is defined, we may or may not
|
||
need a full plt entry. Only skip if we know we'll not need
|
||
the entry -- static or symbolic, and the symbol definition
|
||
has already been seen. */
|
||
if (maybe_dynamic && rel->r_addend == 0)
|
||
need_entry = NEED_FULL_PLT;
|
||
break;
|
||
|
||
case R_IA64_IMM14:
|
||
case R_IA64_IMM22:
|
||
case R_IA64_IMM64:
|
||
case R_IA64_DIR32MSB:
|
||
case R_IA64_DIR32LSB:
|
||
case R_IA64_DIR64MSB:
|
||
case R_IA64_DIR64LSB:
|
||
/* Shared objects will always need at least a REL relocation. */
|
||
if (bfd_link_pic (info) || maybe_dynamic)
|
||
need_entry = NEED_DYNREL;
|
||
break;
|
||
|
||
case R_IA64_IPLTMSB:
|
||
case R_IA64_IPLTLSB:
|
||
/* Shared objects will always need at least a REL relocation. */
|
||
if (bfd_link_pic (info) || maybe_dynamic)
|
||
need_entry = NEED_DYNREL;
|
||
break;
|
||
|
||
case R_IA64_PCREL22:
|
||
case R_IA64_PCREL64I:
|
||
case R_IA64_PCREL32MSB:
|
||
case R_IA64_PCREL32LSB:
|
||
case R_IA64_PCREL64MSB:
|
||
case R_IA64_PCREL64LSB:
|
||
if (maybe_dynamic)
|
||
need_entry = NEED_DYNREL;
|
||
break;
|
||
}
|
||
|
||
if (!need_entry)
|
||
continue;
|
||
|
||
if ((need_entry & NEED_FPTR) != 0
|
||
&& rel->r_addend)
|
||
{
|
||
(*info->callbacks->warning)
|
||
(info, _("non-zero addend in @fptr reloc"), 0,
|
||
abfd, 0, (bfd_vma) 0);
|
||
}
|
||
|
||
if (get_dyn_sym_info (ia64_info, h, abfd, rel, TRUE) == NULL)
|
||
return FALSE;
|
||
}
|
||
|
||
/* Now, we only do lookup without insertion, which is very fast
|
||
with the modified get_dyn_sym_info. */
|
||
for (rel = relocs; rel < relend; ++rel)
|
||
{
|
||
struct elfNN_ia64_dyn_sym_info *dyn_i;
|
||
int dynrel_type = R_IA64_NONE;
|
||
|
||
r_symndx = ELFNN_R_SYM (rel->r_info);
|
||
if (r_symndx >= symtab_hdr->sh_info)
|
||
{
|
||
/* We're dealing with a global symbol -- find its hash entry
|
||
and mark it as being referenced. */
|
||
long indx = r_symndx - symtab_hdr->sh_info;
|
||
h = elf_sym_hashes (abfd)[indx];
|
||
while (h->root.type == bfd_link_hash_indirect
|
||
|| h->root.type == bfd_link_hash_warning)
|
||
h = (struct elf_link_hash_entry *) h->root.u.i.link;
|
||
|
||
/* PR15323, ref flags aren't set for references in the same
|
||
object. */
|
||
h->root.non_ir_ref_regular = 1;
|
||
h->ref_regular = 1;
|
||
}
|
||
else
|
||
h = NULL;
|
||
|
||
if (h && UNDEFWEAK_NO_DYNAMIC_RELOC (info, h))
|
||
continue;
|
||
|
||
/* We can only get preliminary data on whether a symbol is
|
||
locally or externally defined, as not all of the input files
|
||
have yet been processed. Do something with what we know, as
|
||
this may help reduce memory usage and processing time later. */
|
||
maybe_dynamic = (h && ((!bfd_link_executable (info)
|
||
&& (!SYMBOLIC_BIND (info, h)
|
||
|| info->unresolved_syms_in_shared_libs == RM_IGNORE))
|
||
|| !h->def_regular
|
||
|| h->root.type == bfd_link_hash_defweak));
|
||
|
||
need_entry = 0;
|
||
switch (ELFNN_R_TYPE (rel->r_info))
|
||
{
|
||
case R_IA64_TPREL64MSB:
|
||
case R_IA64_TPREL64LSB:
|
||
if (bfd_link_pic (info) || maybe_dynamic)
|
||
need_entry = NEED_DYNREL;
|
||
dynrel_type = R_IA64_TPREL64LSB;
|
||
if (bfd_link_pic (info))
|
||
info->flags |= DF_STATIC_TLS;
|
||
break;
|
||
|
||
case R_IA64_LTOFF_TPREL22:
|
||
need_entry = NEED_TPREL;
|
||
if (bfd_link_pic (info))
|
||
info->flags |= DF_STATIC_TLS;
|
||
break;
|
||
|
||
case R_IA64_DTPREL32MSB:
|
||
case R_IA64_DTPREL32LSB:
|
||
case R_IA64_DTPREL64MSB:
|
||
case R_IA64_DTPREL64LSB:
|
||
if (bfd_link_pic (info) || maybe_dynamic)
|
||
need_entry = NEED_DYNREL;
|
||
dynrel_type = R_IA64_DTPRELNNLSB;
|
||
break;
|
||
|
||
case R_IA64_LTOFF_DTPREL22:
|
||
need_entry = NEED_DTPREL;
|
||
break;
|
||
|
||
case R_IA64_DTPMOD64MSB:
|
||
case R_IA64_DTPMOD64LSB:
|
||
if (bfd_link_pic (info) || maybe_dynamic)
|
||
need_entry = NEED_DYNREL;
|
||
dynrel_type = R_IA64_DTPMOD64LSB;
|
||
break;
|
||
|
||
case R_IA64_LTOFF_DTPMOD22:
|
||
need_entry = NEED_DTPMOD;
|
||
break;
|
||
|
||
case R_IA64_LTOFF_FPTR22:
|
||
case R_IA64_LTOFF_FPTR64I:
|
||
case R_IA64_LTOFF_FPTR32MSB:
|
||
case R_IA64_LTOFF_FPTR32LSB:
|
||
case R_IA64_LTOFF_FPTR64MSB:
|
||
case R_IA64_LTOFF_FPTR64LSB:
|
||
need_entry = NEED_FPTR | NEED_GOT | NEED_LTOFF_FPTR;
|
||
break;
|
||
|
||
case R_IA64_FPTR64I:
|
||
case R_IA64_FPTR32MSB:
|
||
case R_IA64_FPTR32LSB:
|
||
case R_IA64_FPTR64MSB:
|
||
case R_IA64_FPTR64LSB:
|
||
if (bfd_link_pic (info) || h)
|
||
need_entry = NEED_FPTR | NEED_DYNREL;
|
||
else
|
||
need_entry = NEED_FPTR;
|
||
dynrel_type = R_IA64_FPTRNNLSB;
|
||
break;
|
||
|
||
case R_IA64_LTOFF22:
|
||
case R_IA64_LTOFF64I:
|
||
need_entry = NEED_GOT;
|
||
break;
|
||
|
||
case R_IA64_LTOFF22X:
|
||
need_entry = NEED_GOTX;
|
||
break;
|
||
|
||
case R_IA64_PLTOFF22:
|
||
case R_IA64_PLTOFF64I:
|
||
case R_IA64_PLTOFF64MSB:
|
||
case R_IA64_PLTOFF64LSB:
|
||
need_entry = NEED_PLTOFF;
|
||
if (h)
|
||
{
|
||
if (maybe_dynamic)
|
||
need_entry |= NEED_MIN_PLT;
|
||
}
|
||
break;
|
||
|
||
case R_IA64_PCREL21B:
|
||
case R_IA64_PCREL60B:
|
||
/* Depending on where this symbol is defined, we may or may not
|
||
need a full plt entry. Only skip if we know we'll not need
|
||
the entry -- static or symbolic, and the symbol definition
|
||
has already been seen. */
|
||
if (maybe_dynamic && rel->r_addend == 0)
|
||
need_entry = NEED_FULL_PLT;
|
||
break;
|
||
|
||
case R_IA64_IMM14:
|
||
case R_IA64_IMM22:
|
||
case R_IA64_IMM64:
|
||
case R_IA64_DIR32MSB:
|
||
case R_IA64_DIR32LSB:
|
||
case R_IA64_DIR64MSB:
|
||
case R_IA64_DIR64LSB:
|
||
/* Shared objects will always need at least a REL relocation. */
|
||
if (bfd_link_pic (info) || maybe_dynamic)
|
||
need_entry = NEED_DYNREL;
|
||
dynrel_type = R_IA64_DIRNNLSB;
|
||
break;
|
||
|
||
case R_IA64_IPLTMSB:
|
||
case R_IA64_IPLTLSB:
|
||
/* Shared objects will always need at least a REL relocation. */
|
||
if (bfd_link_pic (info) || maybe_dynamic)
|
||
need_entry = NEED_DYNREL;
|
||
dynrel_type = R_IA64_IPLTLSB;
|
||
break;
|
||
|
||
case R_IA64_PCREL22:
|
||
case R_IA64_PCREL64I:
|
||
case R_IA64_PCREL32MSB:
|
||
case R_IA64_PCREL32LSB:
|
||
case R_IA64_PCREL64MSB:
|
||
case R_IA64_PCREL64LSB:
|
||
if (maybe_dynamic)
|
||
need_entry = NEED_DYNREL;
|
||
dynrel_type = R_IA64_PCRELNNLSB;
|
||
break;
|
||
}
|
||
|
||
if (!need_entry)
|
||
continue;
|
||
|
||
dyn_i = get_dyn_sym_info (ia64_info, h, abfd, rel, FALSE);
|
||
|
||
/* Record whether or not this is a local symbol. */
|
||
dyn_i->h = h;
|
||
|
||
/* Create what's needed. */
|
||
if (need_entry & (NEED_GOT | NEED_GOTX | NEED_TPREL
|
||
| NEED_DTPMOD | NEED_DTPREL))
|
||
{
|
||
if (!got)
|
||
{
|
||
got = get_got (abfd, info, ia64_info);
|
||
if (!got)
|
||
return FALSE;
|
||
}
|
||
if (need_entry & NEED_GOT)
|
||
dyn_i->want_got = 1;
|
||
if (need_entry & NEED_GOTX)
|
||
dyn_i->want_gotx = 1;
|
||
if (need_entry & NEED_TPREL)
|
||
dyn_i->want_tprel = 1;
|
||
if (need_entry & NEED_DTPMOD)
|
||
dyn_i->want_dtpmod = 1;
|
||
if (need_entry & NEED_DTPREL)
|
||
dyn_i->want_dtprel = 1;
|
||
}
|
||
if (need_entry & NEED_FPTR)
|
||
{
|
||
if (!fptr)
|
||
{
|
||
fptr = get_fptr (abfd, info, ia64_info);
|
||
if (!fptr)
|
||
return FALSE;
|
||
}
|
||
|
||
/* FPTRs for shared libraries are allocated by the dynamic
|
||
linker. Make sure this local symbol will appear in the
|
||
dynamic symbol table. */
|
||
if (!h && bfd_link_pic (info))
|
||
{
|
||
if (! (bfd_elf_link_record_local_dynamic_symbol
|
||
(info, abfd, (long) r_symndx)))
|
||
return FALSE;
|
||
}
|
||
|
||
dyn_i->want_fptr = 1;
|
||
}
|
||
if (need_entry & NEED_LTOFF_FPTR)
|
||
dyn_i->want_ltoff_fptr = 1;
|
||
if (need_entry & (NEED_MIN_PLT | NEED_FULL_PLT))
|
||
{
|
||
if (!ia64_info->root.dynobj)
|
||
ia64_info->root.dynobj = abfd;
|
||
h->needs_plt = 1;
|
||
dyn_i->want_plt = 1;
|
||
}
|
||
if (need_entry & NEED_FULL_PLT)
|
||
dyn_i->want_plt2 = 1;
|
||
if (need_entry & NEED_PLTOFF)
|
||
{
|
||
/* This is needed here, in case @pltoff is used in a non-shared
|
||
link. */
|
||
if (!pltoff)
|
||
{
|
||
pltoff = get_pltoff (abfd, info, ia64_info);
|
||
if (!pltoff)
|
||
return FALSE;
|
||
}
|
||
|
||
dyn_i->want_pltoff = 1;
|
||
}
|
||
if ((need_entry & NEED_DYNREL) && (sec->flags & SEC_ALLOC))
|
||
{
|
||
if (!srel)
|
||
{
|
||
srel = get_reloc_section (abfd, ia64_info, sec, TRUE);
|
||
if (!srel)
|
||
return FALSE;
|
||
}
|
||
if (!count_dyn_reloc (abfd, dyn_i, srel, dynrel_type,
|
||
(sec->flags & SEC_READONLY) != 0))
|
||
return FALSE;
|
||
}
|
||
}
|
||
|
||
return TRUE;
|
||
}
|
||
|
||
/* For cleanliness, and potentially faster dynamic loading, allocate
|
||
external GOT entries first. */
|
||
|
||
static bfd_boolean
|
||
allocate_global_data_got (struct elfNN_ia64_dyn_sym_info *dyn_i,
|
||
void * data)
|
||
{
|
||
struct elfNN_ia64_allocate_data *x = (struct elfNN_ia64_allocate_data *)data;
|
||
|
||
if ((dyn_i->want_got || dyn_i->want_gotx)
|
||
&& ! dyn_i->want_fptr
|
||
&& elfNN_ia64_dynamic_symbol_p (dyn_i->h, x->info, 0))
|
||
{
|
||
dyn_i->got_offset = x->ofs;
|
||
x->ofs += 8;
|
||
}
|
||
if (dyn_i->want_tprel)
|
||
{
|
||
dyn_i->tprel_offset = x->ofs;
|
||
x->ofs += 8;
|
||
}
|
||
if (dyn_i->want_dtpmod)
|
||
{
|
||
if (elfNN_ia64_dynamic_symbol_p (dyn_i->h, x->info, 0))
|
||
{
|
||
dyn_i->dtpmod_offset = x->ofs;
|
||
x->ofs += 8;
|
||
}
|
||
else
|
||
{
|
||
struct elfNN_ia64_link_hash_table *ia64_info;
|
||
|
||
ia64_info = elfNN_ia64_hash_table (x->info);
|
||
if (ia64_info == NULL)
|
||
return FALSE;
|
||
|
||
if (ia64_info->self_dtpmod_offset == (bfd_vma) -1)
|
||
{
|
||
ia64_info->self_dtpmod_offset = x->ofs;
|
||
x->ofs += 8;
|
||
}
|
||
dyn_i->dtpmod_offset = ia64_info->self_dtpmod_offset;
|
||
}
|
||
}
|
||
if (dyn_i->want_dtprel)
|
||
{
|
||
dyn_i->dtprel_offset = x->ofs;
|
||
x->ofs += 8;
|
||
}
|
||
return TRUE;
|
||
}
|
||
|
||
/* Next, allocate all the GOT entries used by LTOFF_FPTR relocs. */
|
||
|
||
static bfd_boolean
|
||
allocate_global_fptr_got (struct elfNN_ia64_dyn_sym_info *dyn_i,
|
||
void * data)
|
||
{
|
||
struct elfNN_ia64_allocate_data *x = (struct elfNN_ia64_allocate_data *)data;
|
||
|
||
if (dyn_i->want_got
|
||
&& dyn_i->want_fptr
|
||
&& elfNN_ia64_dynamic_symbol_p (dyn_i->h, x->info, R_IA64_FPTRNNLSB))
|
||
{
|
||
dyn_i->got_offset = x->ofs;
|
||
x->ofs += 8;
|
||
}
|
||
return TRUE;
|
||
}
|
||
|
||
/* Lastly, allocate all the GOT entries for local data. */
|
||
|
||
static bfd_boolean
|
||
allocate_local_got (struct elfNN_ia64_dyn_sym_info *dyn_i,
|
||
void * data)
|
||
{
|
||
struct elfNN_ia64_allocate_data *x = (struct elfNN_ia64_allocate_data *)data;
|
||
|
||
if ((dyn_i->want_got || dyn_i->want_gotx)
|
||
&& !elfNN_ia64_dynamic_symbol_p (dyn_i->h, x->info, 0))
|
||
{
|
||
dyn_i->got_offset = x->ofs;
|
||
x->ofs += 8;
|
||
}
|
||
return TRUE;
|
||
}
|
||
|
||
/* Search for the index of a global symbol in it's defining object file. */
|
||
|
||
static long
|
||
global_sym_index (struct elf_link_hash_entry *h)
|
||
{
|
||
struct elf_link_hash_entry **p;
|
||
bfd *obj;
|
||
|
||
BFD_ASSERT (h->root.type == bfd_link_hash_defined
|
||
|| h->root.type == bfd_link_hash_defweak);
|
||
|
||
obj = h->root.u.def.section->owner;
|
||
for (p = elf_sym_hashes (obj); *p != h; ++p)
|
||
continue;
|
||
|
||
return p - elf_sym_hashes (obj) + elf_tdata (obj)->symtab_hdr.sh_info;
|
||
}
|
||
|
||
/* Allocate function descriptors. We can do these for every function
|
||
in a main executable that is not exported. */
|
||
|
||
static bfd_boolean
|
||
allocate_fptr (struct elfNN_ia64_dyn_sym_info *dyn_i, void * data)
|
||
{
|
||
struct elfNN_ia64_allocate_data *x = (struct elfNN_ia64_allocate_data *)data;
|
||
|
||
if (dyn_i->want_fptr)
|
||
{
|
||
struct elf_link_hash_entry *h = dyn_i->h;
|
||
|
||
if (h)
|
||
while (h->root.type == bfd_link_hash_indirect
|
||
|| h->root.type == bfd_link_hash_warning)
|
||
h = (struct elf_link_hash_entry *) h->root.u.i.link;
|
||
|
||
if (!bfd_link_executable (x->info)
|
||
&& (!h
|
||
|| (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
|
||
&& !UNDEFWEAK_NO_DYNAMIC_RELOC (x->info, h))
|
||
|| (h->root.type != bfd_link_hash_undefweak
|
||
&& h->root.type != bfd_link_hash_undefined)))
|
||
{
|
||
if (h && h->dynindx == -1)
|
||
{
|
||
BFD_ASSERT ((h->root.type == bfd_link_hash_defined)
|
||
|| (h->root.type == bfd_link_hash_defweak));
|
||
|
||
if (!bfd_elf_link_record_local_dynamic_symbol
|
||
(x->info, h->root.u.def.section->owner,
|
||
global_sym_index (h)))
|
||
return FALSE;
|
||
}
|
||
|
||
dyn_i->want_fptr = 0;
|
||
}
|
||
else if (h == NULL || h->dynindx == -1)
|
||
{
|
||
dyn_i->fptr_offset = x->ofs;
|
||
x->ofs += 16;
|
||
}
|
||
else
|
||
dyn_i->want_fptr = 0;
|
||
}
|
||
return TRUE;
|
||
}
|
||
|
||
/* Allocate all the minimal PLT entries. */
|
||
|
||
static bfd_boolean
|
||
allocate_plt_entries (struct elfNN_ia64_dyn_sym_info *dyn_i,
|
||
void * data)
|
||
{
|
||
struct elfNN_ia64_allocate_data *x = (struct elfNN_ia64_allocate_data *)data;
|
||
|
||
if (dyn_i->want_plt)
|
||
{
|
||
struct elf_link_hash_entry *h = dyn_i->h;
|
||
|
||
if (h)
|
||
while (h->root.type == bfd_link_hash_indirect
|
||
|| h->root.type == bfd_link_hash_warning)
|
||
h = (struct elf_link_hash_entry *) h->root.u.i.link;
|
||
|
||
/* ??? Versioned symbols seem to lose NEEDS_PLT. */
|
||
if (elfNN_ia64_dynamic_symbol_p (h, x->info, 0))
|
||
{
|
||
bfd_size_type offset = x->ofs;
|
||
if (offset == 0)
|
||
offset = PLT_HEADER_SIZE;
|
||
dyn_i->plt_offset = offset;
|
||
x->ofs = offset + PLT_MIN_ENTRY_SIZE;
|
||
|
||
dyn_i->want_pltoff = 1;
|
||
}
|
||
else
|
||
{
|
||
dyn_i->want_plt = 0;
|
||
dyn_i->want_plt2 = 0;
|
||
}
|
||
}
|
||
return TRUE;
|
||
}
|
||
|
||
/* Allocate all the full PLT entries. */
|
||
|
||
static bfd_boolean
|
||
allocate_plt2_entries (struct elfNN_ia64_dyn_sym_info *dyn_i,
|
||
void * data)
|
||
{
|
||
struct elfNN_ia64_allocate_data *x = (struct elfNN_ia64_allocate_data *)data;
|
||
|
||
if (dyn_i->want_plt2)
|
||
{
|
||
struct elf_link_hash_entry *h = dyn_i->h;
|
||
bfd_size_type ofs = x->ofs;
|
||
|
||
dyn_i->plt2_offset = ofs;
|
||
x->ofs = ofs + PLT_FULL_ENTRY_SIZE;
|
||
|
||
while (h->root.type == bfd_link_hash_indirect
|
||
|| h->root.type == bfd_link_hash_warning)
|
||
h = (struct elf_link_hash_entry *) h->root.u.i.link;
|
||
dyn_i->h->plt.offset = ofs;
|
||
}
|
||
return TRUE;
|
||
}
|
||
|
||
/* Allocate all the PLTOFF entries requested by relocations and
|
||
plt entries. We can't share space with allocated FPTR entries,
|
||
because the latter are not necessarily addressable by the GP.
|
||
??? Relaxation might be able to determine that they are. */
|
||
|
||
static bfd_boolean
|
||
allocate_pltoff_entries (struct elfNN_ia64_dyn_sym_info *dyn_i,
|
||
void * data)
|
||
{
|
||
struct elfNN_ia64_allocate_data *x = (struct elfNN_ia64_allocate_data *)data;
|
||
|
||
if (dyn_i->want_pltoff)
|
||
{
|
||
dyn_i->pltoff_offset = x->ofs;
|
||
x->ofs += 16;
|
||
}
|
||
return TRUE;
|
||
}
|
||
|
||
/* Allocate dynamic relocations for those symbols that turned out
|
||
to be dynamic. */
|
||
|
||
static bfd_boolean
|
||
allocate_dynrel_entries (struct elfNN_ia64_dyn_sym_info *dyn_i,
|
||
void * data)
|
||
{
|
||
struct elfNN_ia64_allocate_data *x = (struct elfNN_ia64_allocate_data *)data;
|
||
struct elfNN_ia64_link_hash_table *ia64_info;
|
||
struct elfNN_ia64_dyn_reloc_entry *rent;
|
||
bfd_boolean dynamic_symbol, shared, resolved_zero;
|
||
|
||
ia64_info = elfNN_ia64_hash_table (x->info);
|
||
if (ia64_info == NULL)
|
||
return FALSE;
|
||
|
||
/* Note that this can't be used in relation to FPTR relocs below. */
|
||
dynamic_symbol = elfNN_ia64_dynamic_symbol_p (dyn_i->h, x->info, 0);
|
||
|
||
shared = bfd_link_pic (x->info);
|
||
resolved_zero = (dyn_i->h
|
||
&& UNDEFWEAK_NO_DYNAMIC_RELOC (x->info,
|
||
dyn_i->h));
|
||
|
||
/* Take care of the GOT and PLT relocations. */
|
||
|
||
if ((!resolved_zero
|
||
&& (dynamic_symbol || shared)
|
||
&& (dyn_i->want_got || dyn_i->want_gotx))
|
||
|| (dyn_i->want_ltoff_fptr
|
||
&& dyn_i->h
|
||
&& dyn_i->h->dynindx != -1))
|
||
{
|
||
if (!dyn_i->want_ltoff_fptr
|
||
|| !bfd_link_pie (x->info)
|
||
|| dyn_i->h == NULL
|
||
|| dyn_i->h->root.type != bfd_link_hash_undefweak)
|
||
ia64_info->root.srelgot->size += sizeof (ElfNN_External_Rela);
|
||
}
|
||
if ((dynamic_symbol || shared) && dyn_i->want_tprel)
|
||
ia64_info->root.srelgot->size += sizeof (ElfNN_External_Rela);
|
||
if (dynamic_symbol && dyn_i->want_dtpmod)
|
||
ia64_info->root.srelgot->size += sizeof (ElfNN_External_Rela);
|
||
if (dynamic_symbol && dyn_i->want_dtprel)
|
||
ia64_info->root.srelgot->size += sizeof (ElfNN_External_Rela);
|
||
|
||
if (x->only_got)
|
||
return TRUE;
|
||
|
||
if (ia64_info->rel_fptr_sec && dyn_i->want_fptr)
|
||
{
|
||
if (dyn_i->h == NULL || dyn_i->h->root.type != bfd_link_hash_undefweak)
|
||
ia64_info->rel_fptr_sec->size += sizeof (ElfNN_External_Rela);
|
||
}
|
||
|
||
if (!resolved_zero && dyn_i->want_pltoff)
|
||
{
|
||
bfd_size_type t = 0;
|
||
|
||
/* Dynamic symbols get one IPLT relocation. Local symbols in
|
||
shared libraries get two REL relocations. Local symbols in
|
||
main applications get nothing. */
|
||
if (dynamic_symbol)
|
||
t = sizeof (ElfNN_External_Rela);
|
||
else if (shared)
|
||
t = 2 * sizeof (ElfNN_External_Rela);
|
||
|
||
ia64_info->rel_pltoff_sec->size += t;
|
||
}
|
||
|
||
/* Take care of the normal data relocations. */
|
||
|
||
for (rent = dyn_i->reloc_entries; rent; rent = rent->next)
|
||
{
|
||
int count = rent->count;
|
||
|
||
switch (rent->type)
|
||
{
|
||
case R_IA64_FPTR32LSB:
|
||
case R_IA64_FPTR64LSB:
|
||
/* Allocate one iff !want_fptr and not PIE, which by this point
|
||
will be true only if we're actually allocating one statically
|
||
in the main executable. Position independent executables
|
||
need a relative reloc. */
|
||
if (dyn_i->want_fptr && !bfd_link_pie (x->info))
|
||
continue;
|
||
break;
|
||
case R_IA64_PCREL32LSB:
|
||
case R_IA64_PCREL64LSB:
|
||
if (!dynamic_symbol)
|
||
continue;
|
||
break;
|
||
case R_IA64_DIR32LSB:
|
||
case R_IA64_DIR64LSB:
|
||
if (!dynamic_symbol && !shared)
|
||
continue;
|
||
break;
|
||
case R_IA64_IPLTLSB:
|
||
if (!dynamic_symbol && !shared)
|
||
continue;
|
||
/* Use two REL relocations for IPLT relocations
|
||
against local symbols. */
|
||
if (!dynamic_symbol)
|
||
count *= 2;
|
||
break;
|
||
case R_IA64_DTPREL32LSB:
|
||
case R_IA64_TPREL64LSB:
|
||
case R_IA64_DTPREL64LSB:
|
||
case R_IA64_DTPMOD64LSB:
|
||
break;
|
||
default:
|
||
abort ();
|
||
}
|
||
if (rent->reltext)
|
||
ia64_info->reltext = 1;
|
||
rent->srel->size += sizeof (ElfNN_External_Rela) * count;
|
||
}
|
||
|
||
return TRUE;
|
||
}
|
||
|
||
static bfd_boolean
|
||
elfNN_ia64_adjust_dynamic_symbol (struct bfd_link_info *info ATTRIBUTE_UNUSED,
|
||
struct elf_link_hash_entry *h)
|
||
{
|
||
/* ??? Undefined symbols with PLT entries should be re-defined
|
||
to be the PLT entry. */
|
||
|
||
/* If this is a weak symbol, and there is a real definition, the
|
||
processor independent code will have arranged for us to see the
|
||
real definition first, and we can just use the same value. */
|
||
if (h->u.weakdef != NULL)
|
||
{
|
||
BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
|
||
|| h->u.weakdef->root.type == bfd_link_hash_defweak);
|
||
h->root.u.def.section = h->u.weakdef->root.u.def.section;
|
||
h->root.u.def.value = h->u.weakdef->root.u.def.value;
|
||
return TRUE;
|
||
}
|
||
|
||
/* If this is a reference to a symbol defined by a dynamic object which
|
||
is not a function, we might allocate the symbol in our .dynbss section
|
||
and allocate a COPY dynamic relocation.
|
||
|
||
But IA-64 code is canonically PIC, so as a rule we can avoid this sort
|
||
of hackery. */
|
||
|
||
return TRUE;
|
||
}
|
||
|
||
static bfd_boolean
|
||
elfNN_ia64_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
|
||
struct bfd_link_info *info)
|
||
{
|
||
struct elfNN_ia64_allocate_data data;
|
||
struct elfNN_ia64_link_hash_table *ia64_info;
|
||
asection *sec;
|
||
bfd *dynobj;
|
||
bfd_boolean relplt = FALSE;
|
||
|
||
ia64_info = elfNN_ia64_hash_table (info);
|
||
if (ia64_info == NULL)
|
||
return FALSE;
|
||
dynobj = ia64_info->root.dynobj;
|
||
ia64_info->self_dtpmod_offset = (bfd_vma) -1;
|
||
BFD_ASSERT(dynobj != NULL);
|
||
data.info = info;
|
||
|
||
/* Set the contents of the .interp section to the interpreter. */
|
||
if (ia64_info->root.dynamic_sections_created
|
||
&& bfd_link_executable (info) && !info->nointerp)
|
||
{
|
||
sec = bfd_get_linker_section (dynobj, ".interp");
|
||
BFD_ASSERT (sec != NULL);
|
||
sec->contents = (bfd_byte *) ELF_DYNAMIC_INTERPRETER;
|
||
sec->size = strlen (ELF_DYNAMIC_INTERPRETER) + 1;
|
||
}
|
||
|
||
/* Allocate the GOT entries. */
|
||
|
||
if (ia64_info->root.sgot)
|
||
{
|
||
data.ofs = 0;
|
||
elfNN_ia64_dyn_sym_traverse (ia64_info, allocate_global_data_got, &data);
|
||
elfNN_ia64_dyn_sym_traverse (ia64_info, allocate_global_fptr_got, &data);
|
||
elfNN_ia64_dyn_sym_traverse (ia64_info, allocate_local_got, &data);
|
||
ia64_info->root.sgot->size = data.ofs;
|
||
}
|
||
|
||
/* Allocate the FPTR entries. */
|
||
|
||
if (ia64_info->fptr_sec)
|
||
{
|
||
data.ofs = 0;
|
||
elfNN_ia64_dyn_sym_traverse (ia64_info, allocate_fptr, &data);
|
||
ia64_info->fptr_sec->size = data.ofs;
|
||
}
|
||
|
||
/* Now that we've seen all of the input files, we can decide which
|
||
symbols need plt entries. Allocate the minimal PLT entries first.
|
||
We do this even though dynamic_sections_created may be FALSE, because
|
||
this has the side-effect of clearing want_plt and want_plt2. */
|
||
|
||
data.ofs = 0;
|
||
elfNN_ia64_dyn_sym_traverse (ia64_info, allocate_plt_entries, &data);
|
||
|
||
ia64_info->minplt_entries = 0;
|
||
if (data.ofs)
|
||
{
|
||
ia64_info->minplt_entries
|
||
= (data.ofs - PLT_HEADER_SIZE) / PLT_MIN_ENTRY_SIZE;
|
||
}
|
||
|
||
/* Align the pointer for the plt2 entries. */
|
||
data.ofs = (data.ofs + 31) & (bfd_vma) -32;
|
||
|
||
elfNN_ia64_dyn_sym_traverse (ia64_info, allocate_plt2_entries, &data);
|
||
if (data.ofs != 0 || ia64_info->root.dynamic_sections_created)
|
||
{
|
||
/* FIXME: we always reserve the memory for dynamic linker even if
|
||
there are no PLT entries since dynamic linker may assume the
|
||
reserved memory always exists. */
|
||
|
||
BFD_ASSERT (ia64_info->root.dynamic_sections_created);
|
||
|
||
ia64_info->root.splt->size = data.ofs;
|
||
|
||
/* If we've got a .plt, we need some extra memory for the dynamic
|
||
linker. We stuff these in .got.plt. */
|
||
ia64_info->root.sgotplt->size = 8 * PLT_RESERVED_WORDS;
|
||
}
|
||
|
||
/* Allocate the PLTOFF entries. */
|
||
|
||
if (ia64_info->pltoff_sec)
|
||
{
|
||
data.ofs = 0;
|
||
elfNN_ia64_dyn_sym_traverse (ia64_info, allocate_pltoff_entries, &data);
|
||
ia64_info->pltoff_sec->size = data.ofs;
|
||
}
|
||
|
||
if (ia64_info->root.dynamic_sections_created)
|
||
{
|
||
/* Allocate space for the dynamic relocations that turned out to be
|
||
required. */
|
||
|
||
if (bfd_link_pic (info) && ia64_info->self_dtpmod_offset != (bfd_vma) -1)
|
||
ia64_info->root.srelgot->size += sizeof (ElfNN_External_Rela);
|
||
data.only_got = FALSE;
|
||
elfNN_ia64_dyn_sym_traverse (ia64_info, allocate_dynrel_entries, &data);
|
||
}
|
||
|
||
/* We have now determined the sizes of the various dynamic sections.
|
||
Allocate memory for them. */
|
||
for (sec = dynobj->sections; sec != NULL; sec = sec->next)
|
||
{
|
||
bfd_boolean strip;
|
||
|
||
if (!(sec->flags & SEC_LINKER_CREATED))
|
||
continue;
|
||
|
||
/* If we don't need this section, strip it from the output file.
|
||
There were several sections primarily related to dynamic
|
||
linking that must be create before the linker maps input
|
||
sections to output sections. The linker does that before
|
||
bfd_elf_size_dynamic_sections is called, and it is that
|
||
function which decides whether anything needs to go into
|
||
these sections. */
|
||
|
||
strip = (sec->size == 0);
|
||
|
||
if (sec == ia64_info->root.sgot)
|
||
strip = FALSE;
|
||
else if (sec == ia64_info->root.srelgot)
|
||
{
|
||
if (strip)
|
||
ia64_info->root.srelgot = NULL;
|
||
else
|
||
/* We use the reloc_count field as a counter if we need to
|
||
copy relocs into the output file. */
|
||
sec->reloc_count = 0;
|
||
}
|
||
else if (sec == ia64_info->fptr_sec)
|
||
{
|
||
if (strip)
|
||
ia64_info->fptr_sec = NULL;
|
||
}
|
||
else if (sec == ia64_info->rel_fptr_sec)
|
||
{
|
||
if (strip)
|
||
ia64_info->rel_fptr_sec = NULL;
|
||
else
|
||
/* We use the reloc_count field as a counter if we need to
|
||
copy relocs into the output file. */
|
||
sec->reloc_count = 0;
|
||
}
|
||
else if (sec == ia64_info->root.splt)
|
||
{
|
||
if (strip)
|
||
ia64_info->root.splt = NULL;
|
||
}
|
||
else if (sec == ia64_info->pltoff_sec)
|
||
{
|
||
if (strip)
|
||
ia64_info->pltoff_sec = NULL;
|
||
}
|
||
else if (sec == ia64_info->rel_pltoff_sec)
|
||
{
|
||
if (strip)
|
||
ia64_info->rel_pltoff_sec = NULL;
|
||
else
|
||
{
|
||
relplt = TRUE;
|
||
/* We use the reloc_count field as a counter if we need to
|
||
copy relocs into the output file. */
|
||
sec->reloc_count = 0;
|
||
}
|
||
}
|
||
else
|
||
{
|
||
const char *name;
|
||
|
||
/* It's OK to base decisions on the section name, because none
|
||
of the dynobj section names depend upon the input files. */
|
||
name = bfd_get_section_name (dynobj, sec);
|
||
|
||
if (strcmp (name, ".got.plt") == 0)
|
||
strip = FALSE;
|
||
else if (CONST_STRNEQ (name, ".rel"))
|
||
{
|
||
if (!strip)
|
||
{
|
||
/* We use the reloc_count field as a counter if we need to
|
||
copy relocs into the output file. */
|
||
sec->reloc_count = 0;
|
||
}
|
||
}
|
||
else
|
||
continue;
|
||
}
|
||
|
||
if (strip)
|
||
sec->flags |= SEC_EXCLUDE;
|
||
else
|
||
{
|
||
/* Allocate memory for the section contents. */
|
||
sec->contents = (bfd_byte *) bfd_zalloc (dynobj, sec->size);
|
||
if (sec->contents == NULL && sec->size != 0)
|
||
return FALSE;
|
||
}
|
||
}
|
||
|
||
if (ia64_info->root.dynamic_sections_created)
|
||
{
|
||
/* Add some entries to the .dynamic section. We fill in the values
|
||
later (in finish_dynamic_sections) but we must add the entries now
|
||
so that we get the correct size for the .dynamic section. */
|
||
|
||
if (bfd_link_executable (info))
|
||
{
|
||
/* The DT_DEBUG entry is filled in by the dynamic linker and used
|
||
by the debugger. */
|
||
#define add_dynamic_entry(TAG, VAL) \
|
||
_bfd_elf_add_dynamic_entry (info, TAG, VAL)
|
||
|
||
if (!add_dynamic_entry (DT_DEBUG, 0))
|
||
return FALSE;
|
||
}
|
||
|
||
if (!add_dynamic_entry (DT_IA_64_PLT_RESERVE, 0))
|
||
return FALSE;
|
||
if (!add_dynamic_entry (DT_PLTGOT, 0))
|
||
return FALSE;
|
||
|
||
if (relplt)
|
||
{
|
||
if (!add_dynamic_entry (DT_PLTRELSZ, 0)
|
||
|| !add_dynamic_entry (DT_PLTREL, DT_RELA)
|
||
|| !add_dynamic_entry (DT_JMPREL, 0))
|
||
return FALSE;
|
||
}
|
||
|
||
if (!add_dynamic_entry (DT_RELA, 0)
|
||
|| !add_dynamic_entry (DT_RELASZ, 0)
|
||
|| !add_dynamic_entry (DT_RELAENT, sizeof (ElfNN_External_Rela)))
|
||
return FALSE;
|
||
|
||
if (ia64_info->reltext)
|
||
{
|
||
if (!add_dynamic_entry (DT_TEXTREL, 0))
|
||
return FALSE;
|
||
info->flags |= DF_TEXTREL;
|
||
}
|
||
}
|
||
|
||
/* ??? Perhaps force __gp local. */
|
||
|
||
return TRUE;
|
||
}
|
||
|
||
static void
|
||
elfNN_ia64_install_dyn_reloc (bfd *abfd, struct bfd_link_info *info,
|
||
asection *sec, asection *srel,
|
||
bfd_vma offset, unsigned int type,
|
||
long dynindx, bfd_vma addend)
|
||
{
|
||
Elf_Internal_Rela outrel;
|
||
bfd_byte *loc;
|
||
|
||
BFD_ASSERT (dynindx != -1);
|
||
outrel.r_info = ELFNN_R_INFO (dynindx, type);
|
||
outrel.r_addend = addend;
|
||
outrel.r_offset = _bfd_elf_section_offset (abfd, info, sec, offset);
|
||
if (outrel.r_offset >= (bfd_vma) -2)
|
||
{
|
||
/* Run for the hills. We shouldn't be outputting a relocation
|
||
for this. So do what everyone else does and output a no-op. */
|
||
outrel.r_info = ELFNN_R_INFO (0, R_IA64_NONE);
|
||
outrel.r_addend = 0;
|
||
outrel.r_offset = 0;
|
||
}
|
||
else
|
||
outrel.r_offset += sec->output_section->vma + sec->output_offset;
|
||
|
||
loc = srel->contents;
|
||
loc += srel->reloc_count++ * sizeof (ElfNN_External_Rela);
|
||
bfd_elfNN_swap_reloca_out (abfd, &outrel, loc);
|
||
BFD_ASSERT (sizeof (ElfNN_External_Rela) * srel->reloc_count <= srel->size);
|
||
}
|
||
|
||
/* Store an entry for target address TARGET_ADDR in the linkage table
|
||
and return the gp-relative address of the linkage table entry. */
|
||
|
||
static bfd_vma
|
||
set_got_entry (bfd *abfd, struct bfd_link_info *info,
|
||
struct elfNN_ia64_dyn_sym_info *dyn_i,
|
||
long dynindx, bfd_vma addend, bfd_vma value,
|
||
unsigned int dyn_r_type)
|
||
{
|
||
struct elfNN_ia64_link_hash_table *ia64_info;
|
||
asection *got_sec;
|
||
bfd_boolean done;
|
||
bfd_vma got_offset;
|
||
|
||
ia64_info = elfNN_ia64_hash_table (info);
|
||
if (ia64_info == NULL)
|
||
return 0;
|
||
|
||
got_sec = ia64_info->root.sgot;
|
||
|
||
switch (dyn_r_type)
|
||
{
|
||
case R_IA64_TPREL64LSB:
|
||
done = dyn_i->tprel_done;
|
||
dyn_i->tprel_done = TRUE;
|
||
got_offset = dyn_i->tprel_offset;
|
||
break;
|
||
case R_IA64_DTPMOD64LSB:
|
||
if (dyn_i->dtpmod_offset != ia64_info->self_dtpmod_offset)
|
||
{
|
||
done = dyn_i->dtpmod_done;
|
||
dyn_i->dtpmod_done = TRUE;
|
||
}
|
||
else
|
||
{
|
||
done = ia64_info->self_dtpmod_done;
|
||
ia64_info->self_dtpmod_done = TRUE;
|
||
dynindx = 0;
|
||
}
|
||
got_offset = dyn_i->dtpmod_offset;
|
||
break;
|
||
case R_IA64_DTPREL32LSB:
|
||
case R_IA64_DTPREL64LSB:
|
||
done = dyn_i->dtprel_done;
|
||
dyn_i->dtprel_done = TRUE;
|
||
got_offset = dyn_i->dtprel_offset;
|
||
break;
|
||
default:
|
||
done = dyn_i->got_done;
|
||
dyn_i->got_done = TRUE;
|
||
got_offset = dyn_i->got_offset;
|
||
break;
|
||
}
|
||
|
||
BFD_ASSERT ((got_offset & 7) == 0);
|
||
|
||
if (! done)
|
||
{
|
||
/* Store the target address in the linkage table entry. */
|
||
bfd_put_64 (abfd, value, got_sec->contents + got_offset);
|
||
|
||
/* Install a dynamic relocation if needed. */
|
||
if (((bfd_link_pic (info)
|
||
&& (!dyn_i->h
|
||
|| (ELF_ST_VISIBILITY (dyn_i->h->other) == STV_DEFAULT
|
||
&& !UNDEFWEAK_NO_DYNAMIC_RELOC (info, dyn_i->h))
|
||
|| dyn_i->h->root.type != bfd_link_hash_undefweak)
|
||
&& dyn_r_type != R_IA64_DTPREL32LSB
|
||
&& dyn_r_type != R_IA64_DTPREL64LSB)
|
||
|| elfNN_ia64_dynamic_symbol_p (dyn_i->h, info, dyn_r_type)
|
||
|| (dynindx != -1
|
||
&& (dyn_r_type == R_IA64_FPTR32LSB
|
||
|| dyn_r_type == R_IA64_FPTR64LSB)))
|
||
&& (!dyn_i->want_ltoff_fptr
|
||
|| !bfd_link_pie (info)
|
||
|| !dyn_i->h
|
||
|| dyn_i->h->root.type != bfd_link_hash_undefweak))
|
||
{
|
||
if (dynindx == -1
|
||
&& dyn_r_type != R_IA64_TPREL64LSB
|
||
&& dyn_r_type != R_IA64_DTPMOD64LSB
|
||
&& dyn_r_type != R_IA64_DTPREL32LSB
|
||
&& dyn_r_type != R_IA64_DTPREL64LSB)
|
||
{
|
||
dyn_r_type = R_IA64_RELNNLSB;
|
||
dynindx = 0;
|
||
addend = value;
|
||
}
|
||
|
||
if (bfd_big_endian (abfd))
|
||
{
|
||
switch (dyn_r_type)
|
||
{
|
||
case R_IA64_REL32LSB:
|
||
dyn_r_type = R_IA64_REL32MSB;
|
||
break;
|
||
case R_IA64_DIR32LSB:
|
||
dyn_r_type = R_IA64_DIR32MSB;
|
||
break;
|
||
case R_IA64_FPTR32LSB:
|
||
dyn_r_type = R_IA64_FPTR32MSB;
|
||
break;
|
||
case R_IA64_DTPREL32LSB:
|
||
dyn_r_type = R_IA64_DTPREL32MSB;
|
||
break;
|
||
case R_IA64_REL64LSB:
|
||
dyn_r_type = R_IA64_REL64MSB;
|
||
break;
|
||
case R_IA64_DIR64LSB:
|
||
dyn_r_type = R_IA64_DIR64MSB;
|
||
break;
|
||
case R_IA64_FPTR64LSB:
|
||
dyn_r_type = R_IA64_FPTR64MSB;
|
||
break;
|
||
case R_IA64_TPREL64LSB:
|
||
dyn_r_type = R_IA64_TPREL64MSB;
|
||
break;
|
||
case R_IA64_DTPMOD64LSB:
|
||
dyn_r_type = R_IA64_DTPMOD64MSB;
|
||
break;
|
||
case R_IA64_DTPREL64LSB:
|
||
dyn_r_type = R_IA64_DTPREL64MSB;
|
||
break;
|
||
default:
|
||
BFD_ASSERT (FALSE);
|
||
break;
|
||
}
|
||
}
|
||
|
||
elfNN_ia64_install_dyn_reloc (abfd, NULL, got_sec,
|
||
ia64_info->root.srelgot,
|
||
got_offset, dyn_r_type,
|
||
dynindx, addend);
|
||
}
|
||
}
|
||
|
||
/* Return the address of the linkage table entry. */
|
||
value = (got_sec->output_section->vma
|
||
+ got_sec->output_offset
|
||
+ got_offset);
|
||
|
||
return value;
|
||
}
|
||
|
||
/* Fill in a function descriptor consisting of the function's code
|
||
address and its global pointer. Return the descriptor's address. */
|
||
|
||
static bfd_vma
|
||
set_fptr_entry (bfd *abfd, struct bfd_link_info *info,
|
||
struct elfNN_ia64_dyn_sym_info *dyn_i,
|
||
bfd_vma value)
|
||
{
|
||
struct elfNN_ia64_link_hash_table *ia64_info;
|
||
asection *fptr_sec;
|
||
|
||
ia64_info = elfNN_ia64_hash_table (info);
|
||
if (ia64_info == NULL)
|
||
return 0;
|
||
|
||
fptr_sec = ia64_info->fptr_sec;
|
||
|
||
if (!dyn_i->fptr_done)
|
||
{
|
||
dyn_i->fptr_done = 1;
|
||
|
||
/* Fill in the function descriptor. */
|
||
bfd_put_64 (abfd, value, fptr_sec->contents + dyn_i->fptr_offset);
|
||
bfd_put_64 (abfd, _bfd_get_gp_value (abfd),
|
||
fptr_sec->contents + dyn_i->fptr_offset + 8);
|
||
if (ia64_info->rel_fptr_sec)
|
||
{
|
||
Elf_Internal_Rela outrel;
|
||
bfd_byte *loc;
|
||
|
||
if (bfd_little_endian (abfd))
|
||
outrel.r_info = ELFNN_R_INFO (0, R_IA64_IPLTLSB);
|
||
else
|
||
outrel.r_info = ELFNN_R_INFO (0, R_IA64_IPLTMSB);
|
||
outrel.r_addend = value;
|
||
outrel.r_offset = (fptr_sec->output_section->vma
|
||
+ fptr_sec->output_offset
|
||
+ dyn_i->fptr_offset);
|
||
loc = ia64_info->rel_fptr_sec->contents;
|
||
loc += ia64_info->rel_fptr_sec->reloc_count++
|
||
* sizeof (ElfNN_External_Rela);
|
||
bfd_elfNN_swap_reloca_out (abfd, &outrel, loc);
|
||
}
|
||
}
|
||
|
||
/* Return the descriptor's address. */
|
||
value = (fptr_sec->output_section->vma
|
||
+ fptr_sec->output_offset
|
||
+ dyn_i->fptr_offset);
|
||
|
||
return value;
|
||
}
|
||
|
||
/* Fill in a PLTOFF entry consisting of the function's code address
|
||
and its global pointer. Return the descriptor's address. */
|
||
|
||
static bfd_vma
|
||
set_pltoff_entry (bfd *abfd, struct bfd_link_info *info,
|
||
struct elfNN_ia64_dyn_sym_info *dyn_i,
|
||
bfd_vma value, bfd_boolean is_plt)
|
||
{
|
||
struct elfNN_ia64_link_hash_table *ia64_info;
|
||
asection *pltoff_sec;
|
||
|
||
ia64_info = elfNN_ia64_hash_table (info);
|
||
if (ia64_info == NULL)
|
||
return 0;
|
||
|
||
pltoff_sec = ia64_info->pltoff_sec;
|
||
|
||
/* Don't do anything if this symbol uses a real PLT entry. In
|
||
that case, we'll fill this in during finish_dynamic_symbol. */
|
||
if ((! dyn_i->want_plt || is_plt)
|
||
&& !dyn_i->pltoff_done)
|
||
{
|
||
bfd_vma gp = _bfd_get_gp_value (abfd);
|
||
|
||
/* Fill in the function descriptor. */
|
||
bfd_put_64 (abfd, value, pltoff_sec->contents + dyn_i->pltoff_offset);
|
||
bfd_put_64 (abfd, gp, pltoff_sec->contents + dyn_i->pltoff_offset + 8);
|
||
|
||
/* Install dynamic relocations if needed. */
|
||
if (!is_plt
|
||
&& bfd_link_pic (info)
|
||
&& (!dyn_i->h
|
||
|| (ELF_ST_VISIBILITY (dyn_i->h->other) == STV_DEFAULT
|
||
&& !UNDEFWEAK_NO_DYNAMIC_RELOC (info, dyn_i->h))
|
||
|| dyn_i->h->root.type != bfd_link_hash_undefweak))
|
||
{
|
||
unsigned int dyn_r_type;
|
||
|
||
if (bfd_big_endian (abfd))
|
||
dyn_r_type = R_IA64_RELNNMSB;
|
||
else
|
||
dyn_r_type = R_IA64_RELNNLSB;
|
||
|
||
elfNN_ia64_install_dyn_reloc (abfd, NULL, pltoff_sec,
|
||
ia64_info->rel_pltoff_sec,
|
||
dyn_i->pltoff_offset,
|
||
dyn_r_type, 0, value);
|
||
elfNN_ia64_install_dyn_reloc (abfd, NULL, pltoff_sec,
|
||
ia64_info->rel_pltoff_sec,
|
||
dyn_i->pltoff_offset + ARCH_SIZE / 8,
|
||
dyn_r_type, 0, gp);
|
||
}
|
||
|
||
dyn_i->pltoff_done = 1;
|
||
}
|
||
|
||
/* Return the descriptor's address. */
|
||
value = (pltoff_sec->output_section->vma
|
||
+ pltoff_sec->output_offset
|
||
+ dyn_i->pltoff_offset);
|
||
|
||
return value;
|
||
}
|
||
|
||
/* Return the base VMA address which should be subtracted from real addresses
|
||
when resolving @tprel() relocation.
|
||
Main program TLS (whose template starts at PT_TLS p_vaddr)
|
||
is assigned offset round(2 * size of pointer, PT_TLS p_align). */
|
||
|
||
static bfd_vma
|
||
elfNN_ia64_tprel_base (struct bfd_link_info *info)
|
||
{
|
||
asection *tls_sec = elf_hash_table (info)->tls_sec;
|
||
return tls_sec->vma - align_power ((bfd_vma) ARCH_SIZE / 4,
|
||
tls_sec->alignment_power);
|
||
}
|
||
|
||
/* Return the base VMA address which should be subtracted from real addresses
|
||
when resolving @dtprel() relocation.
|
||
This is PT_TLS segment p_vaddr. */
|
||
|
||
static bfd_vma
|
||
elfNN_ia64_dtprel_base (struct bfd_link_info *info)
|
||
{
|
||
return elf_hash_table (info)->tls_sec->vma;
|
||
}
|
||
|
||
/* Called through qsort to sort the .IA_64.unwind section during a
|
||
non-relocatable link. Set elfNN_ia64_unwind_entry_compare_bfd
|
||
to the output bfd so we can do proper endianness frobbing. */
|
||
|
||
static bfd *elfNN_ia64_unwind_entry_compare_bfd;
|
||
|
||
static int
|
||
elfNN_ia64_unwind_entry_compare (const void * a, const void * b)
|
||
{
|
||
bfd_vma av, bv;
|
||
|
||
av = bfd_get_64 (elfNN_ia64_unwind_entry_compare_bfd, a);
|
||
bv = bfd_get_64 (elfNN_ia64_unwind_entry_compare_bfd, b);
|
||
|
||
return (av < bv ? -1 : av > bv ? 1 : 0);
|
||
}
|
||
|
||
/* Make sure we've got ourselves a nice fat __gp value. */
|
||
static bfd_boolean
|
||
elfNN_ia64_choose_gp (bfd *abfd, struct bfd_link_info *info, bfd_boolean final)
|
||
{
|
||
bfd_vma min_vma = (bfd_vma) -1, max_vma = 0;
|
||
bfd_vma min_short_vma = min_vma, max_short_vma = 0;
|
||
struct elf_link_hash_entry *gp;
|
||
bfd_vma gp_val;
|
||
asection *os;
|
||
struct elfNN_ia64_link_hash_table *ia64_info;
|
||
|
||
ia64_info = elfNN_ia64_hash_table (info);
|
||
if (ia64_info == NULL)
|
||
return FALSE;
|
||
|
||
/* Find the min and max vma of all sections marked short. Also collect
|
||
min and max vma of any type, for use in selecting a nice gp. */
|
||
for (os = abfd->sections; os ; os = os->next)
|
||
{
|
||
bfd_vma lo, hi;
|
||
|
||
if ((os->flags & SEC_ALLOC) == 0)
|
||
continue;
|
||
|
||
lo = os->vma;
|
||
/* When this function is called from elfNN_ia64_final_link
|
||
the correct value to use is os->size. When called from
|
||
elfNN_ia64_relax_section we are in the middle of section
|
||
sizing; some sections will already have os->size set, others
|
||
will have os->size zero and os->rawsize the previous size. */
|
||
hi = os->vma + (!final && os->rawsize ? os->rawsize : os->size);
|
||
if (hi < lo)
|
||
hi = (bfd_vma) -1;
|
||
|
||
if (min_vma > lo)
|
||
min_vma = lo;
|
||
if (max_vma < hi)
|
||
max_vma = hi;
|
||
if (os->flags & SEC_SMALL_DATA)
|
||
{
|
||
if (min_short_vma > lo)
|
||
min_short_vma = lo;
|
||
if (max_short_vma < hi)
|
||
max_short_vma = hi;
|
||
}
|
||
}
|
||
|
||
if (ia64_info->min_short_sec)
|
||
{
|
||
if (min_short_vma
|
||
> (ia64_info->min_short_sec->vma
|
||
+ ia64_info->min_short_offset))
|
||
min_short_vma = (ia64_info->min_short_sec->vma
|
||
+ ia64_info->min_short_offset);
|
||
if (max_short_vma
|
||
< (ia64_info->max_short_sec->vma
|
||
+ ia64_info->max_short_offset))
|
||
max_short_vma = (ia64_info->max_short_sec->vma
|
||
+ ia64_info->max_short_offset);
|
||
}
|
||
|
||
/* See if the user wants to force a value. */
|
||
gp = elf_link_hash_lookup (elf_hash_table (info), "__gp", FALSE,
|
||
FALSE, FALSE);
|
||
|
||
if (gp
|
||
&& (gp->root.type == bfd_link_hash_defined
|
||
|| gp->root.type == bfd_link_hash_defweak))
|
||
{
|
||
asection *gp_sec = gp->root.u.def.section;
|
||
gp_val = (gp->root.u.def.value
|
||
+ gp_sec->output_section->vma
|
||
+ gp_sec->output_offset);
|
||
}
|
||
else
|
||
{
|
||
/* Pick a sensible value. */
|
||
|
||
if (ia64_info->min_short_sec)
|
||
{
|
||
bfd_vma short_range = max_short_vma - min_short_vma;
|
||
|
||
/* If min_short_sec is set, pick one in the middle bewteen
|
||
min_short_vma and max_short_vma. */
|
||
if (short_range >= 0x400000)
|
||
goto overflow;
|
||
gp_val = min_short_vma + short_range / 2;
|
||
}
|
||
else
|
||
{
|
||
asection *got_sec = ia64_info->root.sgot;
|
||
|
||
/* Start with just the address of the .got. */
|
||
if (got_sec)
|
||
gp_val = got_sec->output_section->vma;
|
||
else if (max_short_vma != 0)
|
||
gp_val = min_short_vma;
|
||
else if (max_vma - min_vma < 0x200000)
|
||
gp_val = min_vma;
|
||
else
|
||
gp_val = max_vma - 0x200000 + 8;
|
||
}
|
||
|
||
/* If it is possible to address the entire image, but we
|
||
don't with the choice above, adjust. */
|
||
if (max_vma - min_vma < 0x400000
|
||
&& (max_vma - gp_val >= 0x200000
|
||
|| gp_val - min_vma > 0x200000))
|
||
gp_val = min_vma + 0x200000;
|
||
else if (max_short_vma != 0)
|
||
{
|
||
/* If we don't cover all the short data, adjust. */
|
||
if (max_short_vma - gp_val >= 0x200000)
|
||
gp_val = min_short_vma + 0x200000;
|
||
|
||
/* If we're addressing stuff past the end, adjust back. */
|
||
if (gp_val > max_vma)
|
||
gp_val = max_vma - 0x200000 + 8;
|
||
}
|
||
}
|
||
|
||
/* Validate whether all SHF_IA_64_SHORT sections are within
|
||
range of the chosen GP. */
|
||
|
||
if (max_short_vma != 0)
|
||
{
|
||
if (max_short_vma - min_short_vma >= 0x400000)
|
||
{
|
||
overflow:
|
||
_bfd_error_handler
|
||
/* xgettext:c-format */
|
||
(_("%B: short data segment overflowed (%#Lx >= 0x400000)"),
|
||
abfd, max_short_vma - min_short_vma);
|
||
return FALSE;
|
||
}
|
||
else if ((gp_val > min_short_vma
|
||
&& gp_val - min_short_vma > 0x200000)
|
||
|| (gp_val < max_short_vma
|
||
&& max_short_vma - gp_val >= 0x200000))
|
||
{
|
||
_bfd_error_handler
|
||
(_("%B: __gp does not cover short data segment"), abfd);
|
||
return FALSE;
|
||
}
|
||
}
|
||
|
||
_bfd_set_gp_value (abfd, gp_val);
|
||
|
||
return TRUE;
|
||
}
|
||
|
||
static bfd_boolean
|
||
elfNN_ia64_final_link (bfd *abfd, struct bfd_link_info *info)
|
||
{
|
||
struct elfNN_ia64_link_hash_table *ia64_info;
|
||
asection *unwind_output_sec;
|
||
|
||
ia64_info = elfNN_ia64_hash_table (info);
|
||
if (ia64_info == NULL)
|
||
return FALSE;
|
||
|
||
/* Make sure we've got ourselves a nice fat __gp value. */
|
||
if (!bfd_link_relocatable (info))
|
||
{
|
||
bfd_vma gp_val;
|
||
struct elf_link_hash_entry *gp;
|
||
|
||
/* We assume after gp is set, section size will only decrease. We
|
||
need to adjust gp for it. */
|
||
_bfd_set_gp_value (abfd, 0);
|
||
if (! elfNN_ia64_choose_gp (abfd, info, TRUE))
|
||
return FALSE;
|
||
gp_val = _bfd_get_gp_value (abfd);
|
||
|
||
gp = elf_link_hash_lookup (elf_hash_table (info), "__gp", FALSE,
|
||
FALSE, FALSE);
|
||
if (gp)
|
||
{
|
||
gp->root.type = bfd_link_hash_defined;
|
||
gp->root.u.def.value = gp_val;
|
||
gp->root.u.def.section = bfd_abs_section_ptr;
|
||
}
|
||
}
|
||
|
||
/* If we're producing a final executable, we need to sort the contents
|
||
of the .IA_64.unwind section. Force this section to be relocated
|
||
into memory rather than written immediately to the output file. */
|
||
unwind_output_sec = NULL;
|
||
if (!bfd_link_relocatable (info))
|
||
{
|
||
asection *s = bfd_get_section_by_name (abfd, ELF_STRING_ia64_unwind);
|
||
if (s)
|
||
{
|
||
unwind_output_sec = s->output_section;
|
||
unwind_output_sec->contents
|
||
= bfd_malloc (unwind_output_sec->size);
|
||
if (unwind_output_sec->contents == NULL)
|
||
return FALSE;
|
||
}
|
||
}
|
||
|
||
/* Invoke the regular ELF backend linker to do all the work. */
|
||
if (!bfd_elf_final_link (abfd, info))
|
||
return FALSE;
|
||
|
||
if (unwind_output_sec)
|
||
{
|
||
elfNN_ia64_unwind_entry_compare_bfd = abfd;
|
||
qsort (unwind_output_sec->contents,
|
||
(size_t) (unwind_output_sec->size / 24),
|
||
24,
|
||
elfNN_ia64_unwind_entry_compare);
|
||
|
||
if (! bfd_set_section_contents (abfd, unwind_output_sec,
|
||
unwind_output_sec->contents, (bfd_vma) 0,
|
||
unwind_output_sec->size))
|
||
return FALSE;
|
||
}
|
||
|
||
return TRUE;
|
||
}
|
||
|
||
static bfd_boolean
|
||
elfNN_ia64_relocate_section (bfd *output_bfd,
|
||
struct bfd_link_info *info,
|
||
bfd *input_bfd,
|
||
asection *input_section,
|
||
bfd_byte *contents,
|
||
Elf_Internal_Rela *relocs,
|
||
Elf_Internal_Sym *local_syms,
|
||
asection **local_sections)
|
||
{
|
||
struct elfNN_ia64_link_hash_table *ia64_info;
|
||
Elf_Internal_Shdr *symtab_hdr;
|
||
Elf_Internal_Rela *rel;
|
||
Elf_Internal_Rela *relend;
|
||
asection *srel;
|
||
bfd_boolean ret_val = TRUE; /* for non-fatal errors */
|
||
bfd_vma gp_val;
|
||
|
||
symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
|
||
ia64_info = elfNN_ia64_hash_table (info);
|
||
if (ia64_info == NULL)
|
||
return FALSE;
|
||
|
||
/* Infect various flags from the input section to the output section. */
|
||
if (bfd_link_relocatable (info))
|
||
{
|
||
bfd_vma flags;
|
||
|
||
flags = elf_section_data(input_section)->this_hdr.sh_flags;
|
||
flags &= SHF_IA_64_NORECOV;
|
||
|
||
elf_section_data(input_section->output_section)
|
||
->this_hdr.sh_flags |= flags;
|
||
}
|
||
|
||
gp_val = _bfd_get_gp_value (output_bfd);
|
||
srel = get_reloc_section (input_bfd, ia64_info, input_section, FALSE);
|
||
|
||
rel = relocs;
|
||
relend = relocs + input_section->reloc_count;
|
||
for (; rel < relend; ++rel)
|
||
{
|
||
struct elf_link_hash_entry *h;
|
||
struct elfNN_ia64_dyn_sym_info *dyn_i;
|
||
bfd_reloc_status_type r;
|
||
reloc_howto_type *howto;
|
||
unsigned long r_symndx;
|
||
Elf_Internal_Sym *sym;
|
||
unsigned int r_type;
|
||
bfd_vma value;
|
||
asection *sym_sec;
|
||
bfd_byte *hit_addr;
|
||
bfd_boolean dynamic_symbol_p;
|
||
bfd_boolean undef_weak_ref;
|
||
|
||
r_type = ELFNN_R_TYPE (rel->r_info);
|
||
if (r_type > R_IA64_MAX_RELOC_CODE)
|
||
{
|
||
_bfd_error_handler
|
||
/* xgettext:c-format */
|
||
(_("%B: unknown relocation type %d"), input_bfd, (int) r_type);
|
||
bfd_set_error (bfd_error_bad_value);
|
||
ret_val = FALSE;
|
||
continue;
|
||
}
|
||
|
||
howto = ia64_elf_lookup_howto (r_type);
|
||
r_symndx = ELFNN_R_SYM (rel->r_info);
|
||
h = NULL;
|
||
sym = NULL;
|
||
sym_sec = NULL;
|
||
undef_weak_ref = FALSE;
|
||
|
||
if (r_symndx < symtab_hdr->sh_info)
|
||
{
|
||
/* Reloc against local symbol. */
|
||
asection *msec;
|
||
sym = local_syms + r_symndx;
|
||
sym_sec = local_sections[r_symndx];
|
||
msec = sym_sec;
|
||
value = _bfd_elf_rela_local_sym (output_bfd, sym, &msec, rel);
|
||
if (!bfd_link_relocatable (info)
|
||
&& (sym_sec->flags & SEC_MERGE) != 0
|
||
&& ELF_ST_TYPE (sym->st_info) == STT_SECTION
|
||
&& sym_sec->sec_info_type == SEC_INFO_TYPE_MERGE)
|
||
{
|
||
struct elfNN_ia64_local_hash_entry *loc_h;
|
||
|
||
loc_h = get_local_sym_hash (ia64_info, input_bfd, rel, FALSE);
|
||
if (loc_h && ! loc_h->sec_merge_done)
|
||
{
|
||
struct elfNN_ia64_dyn_sym_info *dynent;
|
||
unsigned int count;
|
||
|
||
for (count = loc_h->count, dynent = loc_h->info;
|
||
count != 0;
|
||
count--, dynent++)
|
||
{
|
||
msec = sym_sec;
|
||
dynent->addend =
|
||
_bfd_merged_section_offset (output_bfd, &msec,
|
||
elf_section_data (msec)->
|
||
sec_info,
|
||
sym->st_value
|
||
+ dynent->addend);
|
||
dynent->addend -= sym->st_value;
|
||
dynent->addend += msec->output_section->vma
|
||
+ msec->output_offset
|
||
- sym_sec->output_section->vma
|
||
- sym_sec->output_offset;
|
||
}
|
||
|
||
/* We may have introduced duplicated entries. We need
|
||
to remove them properly. */
|
||
count = sort_dyn_sym_info (loc_h->info, loc_h->count);
|
||
if (count != loc_h->count)
|
||
{
|
||
loc_h->count = count;
|
||
loc_h->sorted_count = count;
|
||
}
|
||
|
||
loc_h->sec_merge_done = 1;
|
||
}
|
||
}
|
||
}
|
||
else
|
||
{
|
||
bfd_boolean unresolved_reloc;
|
||
bfd_boolean warned, ignored;
|
||
struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (input_bfd);
|
||
|
||
RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
|
||
r_symndx, symtab_hdr, sym_hashes,
|
||
h, sym_sec, value,
|
||
unresolved_reloc, warned, ignored);
|
||
|
||
if (h->root.type == bfd_link_hash_undefweak)
|
||
undef_weak_ref = TRUE;
|
||
else if (warned || (ignored && bfd_link_executable (info)))
|
||
continue;
|
||
}
|
||
|
||
if (sym_sec != NULL && discarded_section (sym_sec))
|
||
RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section,
|
||
rel, 1, relend, howto, 0, contents);
|
||
|
||
if (bfd_link_relocatable (info))
|
||
continue;
|
||
|
||
hit_addr = contents + rel->r_offset;
|
||
value += rel->r_addend;
|
||
dynamic_symbol_p = elfNN_ia64_dynamic_symbol_p (h, info, r_type);
|
||
|
||
switch (r_type)
|
||
{
|
||
case R_IA64_NONE:
|
||
case R_IA64_LDXMOV:
|
||
continue;
|
||
|
||
case R_IA64_IMM14:
|
||
case R_IA64_IMM22:
|
||
case R_IA64_IMM64:
|
||
case R_IA64_DIR32MSB:
|
||
case R_IA64_DIR32LSB:
|
||
case R_IA64_DIR64MSB:
|
||
case R_IA64_DIR64LSB:
|
||
/* Install a dynamic relocation for this reloc. */
|
||
if ((dynamic_symbol_p || bfd_link_pic (info))
|
||
&& !(h && UNDEFWEAK_NO_DYNAMIC_RELOC (info, h))
|
||
&& r_symndx != STN_UNDEF
|
||
&& (input_section->flags & SEC_ALLOC) != 0)
|
||
{
|
||
unsigned int dyn_r_type;
|
||
long dynindx;
|
||
bfd_vma addend;
|
||
|
||
BFD_ASSERT (srel != NULL);
|
||
|
||
switch (r_type)
|
||
{
|
||
case R_IA64_IMM14:
|
||
case R_IA64_IMM22:
|
||
case R_IA64_IMM64:
|
||
/* ??? People shouldn't be doing non-pic code in
|
||
shared libraries nor dynamic executables. */
|
||
_bfd_error_handler
|
||
/* xgettext:c-format */
|
||
(_("%B: non-pic code with imm relocation against dynamic symbol `%s'"),
|
||
input_bfd,
|
||
h ? h->root.root.string
|
||
: bfd_elf_sym_name (input_bfd, symtab_hdr, sym,
|
||
sym_sec));
|
||
ret_val = FALSE;
|
||
continue;
|
||
|
||
default:
|
||
break;
|
||
}
|
||
|
||
/* If we don't need dynamic symbol lookup, find a
|
||
matching RELATIVE relocation. */
|
||
dyn_r_type = r_type;
|
||
if (dynamic_symbol_p)
|
||
{
|
||
dynindx = h->dynindx;
|
||
addend = rel->r_addend;
|
||
value = 0;
|
||
}
|
||
else
|
||
{
|
||
switch (r_type)
|
||
{
|
||
case R_IA64_DIR32MSB:
|
||
dyn_r_type = R_IA64_REL32MSB;
|
||
break;
|
||
case R_IA64_DIR32LSB:
|
||
dyn_r_type = R_IA64_REL32LSB;
|
||
break;
|
||
case R_IA64_DIR64MSB:
|
||
dyn_r_type = R_IA64_REL64MSB;
|
||
break;
|
||
case R_IA64_DIR64LSB:
|
||
dyn_r_type = R_IA64_REL64LSB;
|
||
break;
|
||
|
||
default:
|
||
break;
|
||
}
|
||
dynindx = 0;
|
||
addend = value;
|
||
}
|
||
|
||
elfNN_ia64_install_dyn_reloc (output_bfd, info, input_section,
|
||
srel, rel->r_offset, dyn_r_type,
|
||
dynindx, addend);
|
||
}
|
||
/* Fall through. */
|
||
|
||
case R_IA64_LTV32MSB:
|
||
case R_IA64_LTV32LSB:
|
||
case R_IA64_LTV64MSB:
|
||
case R_IA64_LTV64LSB:
|
||
r = ia64_elf_install_value (hit_addr, value, r_type);
|
||
break;
|
||
|
||
case R_IA64_GPREL22:
|
||
case R_IA64_GPREL64I:
|
||
case R_IA64_GPREL32MSB:
|
||
case R_IA64_GPREL32LSB:
|
||
case R_IA64_GPREL64MSB:
|
||
case R_IA64_GPREL64LSB:
|
||
if (dynamic_symbol_p)
|
||
{
|
||
_bfd_error_handler
|
||
/* xgettext:c-format */
|
||
(_("%B: @gprel relocation against dynamic symbol %s"),
|
||
input_bfd,
|
||
h ? h->root.root.string
|
||
: bfd_elf_sym_name (input_bfd, symtab_hdr, sym,
|
||
sym_sec));
|
||
ret_val = FALSE;
|
||
continue;
|
||
}
|
||
value -= gp_val;
|
||
r = ia64_elf_install_value (hit_addr, value, r_type);
|
||
break;
|
||
|
||
case R_IA64_LTOFF22:
|
||
case R_IA64_LTOFF22X:
|
||
case R_IA64_LTOFF64I:
|
||
dyn_i = get_dyn_sym_info (ia64_info, h, input_bfd, rel, FALSE);
|
||
value = set_got_entry (input_bfd, info, dyn_i, (h ? h->dynindx : -1),
|
||
rel->r_addend, value, R_IA64_DIRNNLSB);
|
||
value -= gp_val;
|
||
r = ia64_elf_install_value (hit_addr, value, r_type);
|
||
break;
|
||
|
||
case R_IA64_PLTOFF22:
|
||
case R_IA64_PLTOFF64I:
|
||
case R_IA64_PLTOFF64MSB:
|
||
case R_IA64_PLTOFF64LSB:
|
||
dyn_i = get_dyn_sym_info (ia64_info, h, input_bfd, rel, FALSE);
|
||
value = set_pltoff_entry (output_bfd, info, dyn_i, value, FALSE);
|
||
value -= gp_val;
|
||
r = ia64_elf_install_value (hit_addr, value, r_type);
|
||
break;
|
||
|
||
case R_IA64_FPTR64I:
|
||
case R_IA64_FPTR32MSB:
|
||
case R_IA64_FPTR32LSB:
|
||
case R_IA64_FPTR64MSB:
|
||
case R_IA64_FPTR64LSB:
|
||
dyn_i = get_dyn_sym_info (ia64_info, h, input_bfd, rel, FALSE);
|
||
if (dyn_i->want_fptr)
|
||
{
|
||
if (!undef_weak_ref)
|
||
value = set_fptr_entry (output_bfd, info, dyn_i, value);
|
||
}
|
||
if (!dyn_i->want_fptr || bfd_link_pie (info))
|
||
{
|
||
long dynindx;
|
||
unsigned int dyn_r_type = r_type;
|
||
bfd_vma addend = rel->r_addend;
|
||
|
||
/* Otherwise, we expect the dynamic linker to create
|
||
the entry. */
|
||
|
||
if (dyn_i->want_fptr)
|
||
{
|
||
if (r_type == R_IA64_FPTR64I)
|
||
{
|
||
/* We can't represent this without a dynamic symbol.
|
||
Adjust the relocation to be against an output
|
||
section symbol, which are always present in the
|
||
dynamic symbol table. */
|
||
/* ??? People shouldn't be doing non-pic code in
|
||
shared libraries. Hork. */
|
||
_bfd_error_handler
|
||
(_("%B: linking non-pic code in a position independent executable"),
|
||
input_bfd);
|
||
ret_val = FALSE;
|
||
continue;
|
||
}
|
||
dynindx = 0;
|
||
addend = value;
|
||
dyn_r_type = r_type + R_IA64_RELNNLSB - R_IA64_FPTRNNLSB;
|
||
}
|
||
else if (h)
|
||
{
|
||
if (h->dynindx != -1)
|
||
dynindx = h->dynindx;
|
||
else
|
||
dynindx = (_bfd_elf_link_lookup_local_dynindx
|
||
(info, h->root.u.def.section->owner,
|
||
global_sym_index (h)));
|
||
value = 0;
|
||
}
|
||
else
|
||
{
|
||
dynindx = (_bfd_elf_link_lookup_local_dynindx
|
||
(info, input_bfd, (long) r_symndx));
|
||
value = 0;
|
||
}
|
||
|
||
elfNN_ia64_install_dyn_reloc (output_bfd, info, input_section,
|
||
srel, rel->r_offset, dyn_r_type,
|
||
dynindx, addend);
|
||
}
|
||
|
||
r = ia64_elf_install_value (hit_addr, value, r_type);
|
||
break;
|
||
|
||
case R_IA64_LTOFF_FPTR22:
|
||
case R_IA64_LTOFF_FPTR64I:
|
||
case R_IA64_LTOFF_FPTR32MSB:
|
||
case R_IA64_LTOFF_FPTR32LSB:
|
||
case R_IA64_LTOFF_FPTR64MSB:
|
||
case R_IA64_LTOFF_FPTR64LSB:
|
||
{
|
||
long dynindx;
|
||
|
||
dyn_i = get_dyn_sym_info (ia64_info, h, input_bfd, rel, FALSE);
|
||
if (dyn_i->want_fptr)
|
||
{
|
||
BFD_ASSERT (h == NULL || h->dynindx == -1);
|
||
if (!undef_weak_ref)
|
||
value = set_fptr_entry (output_bfd, info, dyn_i, value);
|
||
dynindx = -1;
|
||
}
|
||
else
|
||
{
|
||
/* Otherwise, we expect the dynamic linker to create
|
||
the entry. */
|
||
if (h)
|
||
{
|
||
if (h->dynindx != -1)
|
||
dynindx = h->dynindx;
|
||
else
|
||
dynindx = (_bfd_elf_link_lookup_local_dynindx
|
||
(info, h->root.u.def.section->owner,
|
||
global_sym_index (h)));
|
||
}
|
||
else
|
||
dynindx = (_bfd_elf_link_lookup_local_dynindx
|
||
(info, input_bfd, (long) r_symndx));
|
||
value = 0;
|
||
}
|
||
|
||
value = set_got_entry (output_bfd, info, dyn_i, dynindx,
|
||
rel->r_addend, value, R_IA64_FPTRNNLSB);
|
||
value -= gp_val;
|
||
r = ia64_elf_install_value (hit_addr, value, r_type);
|
||
}
|
||
break;
|
||
|
||
case R_IA64_PCREL32MSB:
|
||
case R_IA64_PCREL32LSB:
|
||
case R_IA64_PCREL64MSB:
|
||
case R_IA64_PCREL64LSB:
|
||
/* Install a dynamic relocation for this reloc. */
|
||
if (dynamic_symbol_p && r_symndx != STN_UNDEF)
|
||
{
|
||
BFD_ASSERT (srel != NULL);
|
||
|
||
elfNN_ia64_install_dyn_reloc (output_bfd, info, input_section,
|
||
srel, rel->r_offset, r_type,
|
||
h->dynindx, rel->r_addend);
|
||
}
|
||
goto finish_pcrel;
|
||
|
||
case R_IA64_PCREL21B:
|
||
case R_IA64_PCREL60B:
|
||
/* We should have created a PLT entry for any dynamic symbol. */
|
||
dyn_i = NULL;
|
||
if (h)
|
||
dyn_i = get_dyn_sym_info (ia64_info, h, NULL, NULL, FALSE);
|
||
|
||
if (dyn_i && dyn_i->want_plt2)
|
||
{
|
||
/* Should have caught this earlier. */
|
||
BFD_ASSERT (rel->r_addend == 0);
|
||
|
||
value = (ia64_info->root.splt->output_section->vma
|
||
+ ia64_info->root.splt->output_offset
|
||
+ dyn_i->plt2_offset);
|
||
}
|
||
else
|
||
{
|
||
/* Since there's no PLT entry, Validate that this is
|
||
locally defined. */
|
||
BFD_ASSERT (undef_weak_ref || sym_sec->output_section != NULL);
|
||
|
||
/* If the symbol is undef_weak, we shouldn't be trying
|
||
to call it. There's every chance that we'd wind up
|
||
with an out-of-range fixup here. Don't bother setting
|
||
any value at all. */
|
||
if (undef_weak_ref)
|
||
continue;
|
||
}
|
||
goto finish_pcrel;
|
||
|
||
case R_IA64_PCREL21BI:
|
||
case R_IA64_PCREL21F:
|
||
case R_IA64_PCREL21M:
|
||
case R_IA64_PCREL22:
|
||
case R_IA64_PCREL64I:
|
||
/* The PCREL21BI reloc is specifically not intended for use with
|
||
dynamic relocs. PCREL21F and PCREL21M are used for speculation
|
||
fixup code, and thus probably ought not be dynamic. The
|
||
PCREL22 and PCREL64I relocs aren't emitted as dynamic relocs. */
|
||
if (dynamic_symbol_p)
|
||
{
|
||
const char *msg;
|
||
|
||
if (r_type == R_IA64_PCREL21BI)
|
||
/* xgettext:c-format */
|
||
msg = _("%B: @internal branch to dynamic symbol %s");
|
||
else if (r_type == R_IA64_PCREL21F || r_type == R_IA64_PCREL21M)
|
||
/* xgettext:c-format */
|
||
msg = _("%B: speculation fixup to dynamic symbol %s");
|
||
else
|
||
/* xgettext:c-format */
|
||
msg = _("%B: @pcrel relocation against dynamic symbol %s");
|
||
_bfd_error_handler (msg, input_bfd,
|
||
h ? h->root.root.string
|
||
: bfd_elf_sym_name (input_bfd,
|
||
symtab_hdr,
|
||
sym,
|
||
sym_sec));
|
||
ret_val = FALSE;
|
||
continue;
|
||
}
|
||
goto finish_pcrel;
|
||
|
||
finish_pcrel:
|
||
/* Make pc-relative. */
|
||
value -= (input_section->output_section->vma
|
||
+ input_section->output_offset
|
||
+ rel->r_offset) & ~ (bfd_vma) 0x3;
|
||
r = ia64_elf_install_value (hit_addr, value, r_type);
|
||
break;
|
||
|
||
case R_IA64_SEGREL32MSB:
|
||
case R_IA64_SEGREL32LSB:
|
||
case R_IA64_SEGREL64MSB:
|
||
case R_IA64_SEGREL64LSB:
|
||
{
|
||
/* Find the segment that contains the output_section. */
|
||
Elf_Internal_Phdr *p = _bfd_elf_find_segment_containing_section
|
||
(output_bfd, input_section->output_section);
|
||
|
||
if (p == NULL)
|
||
{
|
||
r = bfd_reloc_notsupported;
|
||
}
|
||
else
|
||
{
|
||
/* The VMA of the segment is the vaddr of the associated
|
||
program header. */
|
||
if (value > p->p_vaddr)
|
||
value -= p->p_vaddr;
|
||
else
|
||
value = 0;
|
||
r = ia64_elf_install_value (hit_addr, value, r_type);
|
||
}
|
||
break;
|
||
}
|
||
|
||
case R_IA64_SECREL32MSB:
|
||
case R_IA64_SECREL32LSB:
|
||
case R_IA64_SECREL64MSB:
|
||
case R_IA64_SECREL64LSB:
|
||
/* Make output-section relative to section where the symbol
|
||
is defined. PR 475 */
|
||
if (sym_sec)
|
||
value -= sym_sec->output_section->vma;
|
||
r = ia64_elf_install_value (hit_addr, value, r_type);
|
||
break;
|
||
|
||
case R_IA64_IPLTMSB:
|
||
case R_IA64_IPLTLSB:
|
||
/* Install a dynamic relocation for this reloc. */
|
||
if ((dynamic_symbol_p || bfd_link_pic (info))
|
||
&& (input_section->flags & SEC_ALLOC) != 0)
|
||
{
|
||
BFD_ASSERT (srel != NULL);
|
||
|
||
/* If we don't need dynamic symbol lookup, install two
|
||
RELATIVE relocations. */
|
||
if (!dynamic_symbol_p)
|
||
{
|
||
unsigned int dyn_r_type;
|
||
|
||
if (r_type == R_IA64_IPLTMSB)
|
||
dyn_r_type = R_IA64_REL64MSB;
|
||
else
|
||
dyn_r_type = R_IA64_REL64LSB;
|
||
|
||
elfNN_ia64_install_dyn_reloc (output_bfd, info,
|
||
input_section,
|
||
srel, rel->r_offset,
|
||
dyn_r_type, 0, value);
|
||
elfNN_ia64_install_dyn_reloc (output_bfd, info,
|
||
input_section,
|
||
srel, rel->r_offset + 8,
|
||
dyn_r_type, 0, gp_val);
|
||
}
|
||
else
|
||
elfNN_ia64_install_dyn_reloc (output_bfd, info, input_section,
|
||
srel, rel->r_offset, r_type,
|
||
h->dynindx, rel->r_addend);
|
||
}
|
||
|
||
if (r_type == R_IA64_IPLTMSB)
|
||
r_type = R_IA64_DIR64MSB;
|
||
else
|
||
r_type = R_IA64_DIR64LSB;
|
||
ia64_elf_install_value (hit_addr, value, r_type);
|
||
r = ia64_elf_install_value (hit_addr + 8, gp_val, r_type);
|
||
break;
|
||
|
||
case R_IA64_TPREL14:
|
||
case R_IA64_TPREL22:
|
||
case R_IA64_TPREL64I:
|
||
if (elf_hash_table (info)->tls_sec == NULL)
|
||
goto missing_tls_sec;
|
||
value -= elfNN_ia64_tprel_base (info);
|
||
r = ia64_elf_install_value (hit_addr, value, r_type);
|
||
break;
|
||
|
||
case R_IA64_DTPREL14:
|
||
case R_IA64_DTPREL22:
|
||
case R_IA64_DTPREL64I:
|
||
case R_IA64_DTPREL32LSB:
|
||
case R_IA64_DTPREL32MSB:
|
||
case R_IA64_DTPREL64LSB:
|
||
case R_IA64_DTPREL64MSB:
|
||
if (elf_hash_table (info)->tls_sec == NULL)
|
||
goto missing_tls_sec;
|
||
value -= elfNN_ia64_dtprel_base (info);
|
||
r = ia64_elf_install_value (hit_addr, value, r_type);
|
||
break;
|
||
|
||
case R_IA64_LTOFF_TPREL22:
|
||
case R_IA64_LTOFF_DTPMOD22:
|
||
case R_IA64_LTOFF_DTPREL22:
|
||
{
|
||
int got_r_type;
|
||
long dynindx = h ? h->dynindx : -1;
|
||
bfd_vma r_addend = rel->r_addend;
|
||
|
||
switch (r_type)
|
||
{
|
||
default:
|
||
case R_IA64_LTOFF_TPREL22:
|
||
if (!dynamic_symbol_p)
|
||
{
|
||
if (elf_hash_table (info)->tls_sec == NULL)
|
||
goto missing_tls_sec;
|
||
if (!bfd_link_pic (info))
|
||
value -= elfNN_ia64_tprel_base (info);
|
||
else
|
||
{
|
||
r_addend += value - elfNN_ia64_dtprel_base (info);
|
||
dynindx = 0;
|
||
}
|
||
}
|
||
got_r_type = R_IA64_TPREL64LSB;
|
||
break;
|
||
case R_IA64_LTOFF_DTPMOD22:
|
||
if (!dynamic_symbol_p && !bfd_link_pic (info))
|
||
value = 1;
|
||
got_r_type = R_IA64_DTPMOD64LSB;
|
||
break;
|
||
case R_IA64_LTOFF_DTPREL22:
|
||
if (!dynamic_symbol_p)
|
||
{
|
||
if (elf_hash_table (info)->tls_sec == NULL)
|
||
goto missing_tls_sec;
|
||
value -= elfNN_ia64_dtprel_base (info);
|
||
}
|
||
got_r_type = R_IA64_DTPRELNNLSB;
|
||
break;
|
||
}
|
||
dyn_i = get_dyn_sym_info (ia64_info, h, input_bfd, rel, FALSE);
|
||
value = set_got_entry (input_bfd, info, dyn_i, dynindx, r_addend,
|
||
value, got_r_type);
|
||
value -= gp_val;
|
||
r = ia64_elf_install_value (hit_addr, value, r_type);
|
||
}
|
||
break;
|
||
|
||
default:
|
||
r = bfd_reloc_notsupported;
|
||
break;
|
||
}
|
||
|
||
switch (r)
|
||
{
|
||
case bfd_reloc_ok:
|
||
break;
|
||
|
||
case bfd_reloc_undefined:
|
||
/* This can happen for global table relative relocs if
|
||
__gp is undefined. This is a panic situation so we
|
||
don't try to continue. */
|
||
(*info->callbacks->undefined_symbol)
|
||
(info, "__gp", input_bfd, input_section, rel->r_offset, 1);
|
||
return FALSE;
|
||
|
||
case bfd_reloc_notsupported:
|
||
{
|
||
const char *name;
|
||
|
||
if (h)
|
||
name = h->root.root.string;
|
||
else
|
||
name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym,
|
||
sym_sec);
|
||
(*info->callbacks->warning) (info, _("unsupported reloc"),
|
||
name, input_bfd,
|
||
input_section, rel->r_offset);
|
||
ret_val = FALSE;
|
||
}
|
||
break;
|
||
|
||
case bfd_reloc_dangerous:
|
||
case bfd_reloc_outofrange:
|
||
case bfd_reloc_overflow:
|
||
default:
|
||
missing_tls_sec:
|
||
{
|
||
const char *name;
|
||
|
||
if (h)
|
||
name = h->root.root.string;
|
||
else
|
||
name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym,
|
||
sym_sec);
|
||
|
||
switch (r_type)
|
||
{
|
||
case R_IA64_TPREL14:
|
||
case R_IA64_TPREL22:
|
||
case R_IA64_TPREL64I:
|
||
case R_IA64_DTPREL14:
|
||
case R_IA64_DTPREL22:
|
||
case R_IA64_DTPREL64I:
|
||
case R_IA64_DTPREL32LSB:
|
||
case R_IA64_DTPREL32MSB:
|
||
case R_IA64_DTPREL64LSB:
|
||
case R_IA64_DTPREL64MSB:
|
||
case R_IA64_LTOFF_TPREL22:
|
||
case R_IA64_LTOFF_DTPMOD22:
|
||
case R_IA64_LTOFF_DTPREL22:
|
||
_bfd_error_handler
|
||
/* xgettext:c-format */
|
||
(_("%B: missing TLS section for relocation %s against `%s'"
|
||
" at %#Lx in section `%A'."),
|
||
input_bfd, howto->name, name,
|
||
rel->r_offset, input_section);
|
||
break;
|
||
|
||
case R_IA64_PCREL21B:
|
||
case R_IA64_PCREL21BI:
|
||
case R_IA64_PCREL21M:
|
||
case R_IA64_PCREL21F:
|
||
if (is_elf_hash_table (info->hash))
|
||
{
|
||
/* Relaxtion is always performed for ELF output.
|
||
Overflow failures for those relocations mean
|
||
that the section is too big to relax. */
|
||
_bfd_error_handler
|
||
/* xgettext:c-format */
|
||
(_("%B: Can't relax br (%s) to `%s' at %#Lx"
|
||
" in section `%A' with size %#Lx (> 0x1000000)."),
|
||
input_bfd, howto->name, name, rel->r_offset,
|
||
input_section, input_section->size);
|
||
break;
|
||
}
|
||
/* Fall through. */
|
||
default:
|
||
(*info->callbacks->reloc_overflow) (info,
|
||
&h->root,
|
||
name,
|
||
howto->name,
|
||
(bfd_vma) 0,
|
||
input_bfd,
|
||
input_section,
|
||
rel->r_offset);
|
||
break;
|
||
}
|
||
|
||
ret_val = FALSE;
|
||
}
|
||
break;
|
||
}
|
||
}
|
||
|
||
return ret_val;
|
||
}
|
||
|
||
static bfd_boolean
|
||
elfNN_ia64_finish_dynamic_symbol (bfd *output_bfd,
|
||
struct bfd_link_info *info,
|
||
struct elf_link_hash_entry *h,
|
||
Elf_Internal_Sym *sym)
|
||
{
|
||
struct elfNN_ia64_link_hash_table *ia64_info;
|
||
struct elfNN_ia64_dyn_sym_info *dyn_i;
|
||
|
||
ia64_info = elfNN_ia64_hash_table (info);
|
||
if (ia64_info == NULL)
|
||
return FALSE;
|
||
|
||
dyn_i = get_dyn_sym_info (ia64_info, h, NULL, NULL, FALSE);
|
||
|
||
/* Fill in the PLT data, if required. */
|
||
if (dyn_i && dyn_i->want_plt)
|
||
{
|
||
Elf_Internal_Rela outrel;
|
||
bfd_byte *loc;
|
||
asection *plt_sec;
|
||
bfd_vma plt_addr, pltoff_addr, gp_val, plt_index;
|
||
|
||
gp_val = _bfd_get_gp_value (output_bfd);
|
||
|
||
/* Initialize the minimal PLT entry. */
|
||
|
||
plt_index = (dyn_i->plt_offset - PLT_HEADER_SIZE) / PLT_MIN_ENTRY_SIZE;
|
||
plt_sec = ia64_info->root.splt;
|
||
loc = plt_sec->contents + dyn_i->plt_offset;
|
||
|
||
memcpy (loc, plt_min_entry, PLT_MIN_ENTRY_SIZE);
|
||
ia64_elf_install_value (loc, plt_index, R_IA64_IMM22);
|
||
ia64_elf_install_value (loc+2, -dyn_i->plt_offset, R_IA64_PCREL21B);
|
||
|
||
plt_addr = (plt_sec->output_section->vma
|
||
+ plt_sec->output_offset
|
||
+ dyn_i->plt_offset);
|
||
pltoff_addr = set_pltoff_entry (output_bfd, info, dyn_i, plt_addr, TRUE);
|
||
|
||
/* Initialize the FULL PLT entry, if needed. */
|
||
if (dyn_i->want_plt2)
|
||
{
|
||
loc = plt_sec->contents + dyn_i->plt2_offset;
|
||
|
||
memcpy (loc, plt_full_entry, PLT_FULL_ENTRY_SIZE);
|
||
ia64_elf_install_value (loc, pltoff_addr - gp_val, R_IA64_IMM22);
|
||
|
||
/* Mark the symbol as undefined, rather than as defined in the
|
||
plt section. Leave the value alone. */
|
||
/* ??? We didn't redefine it in adjust_dynamic_symbol in the
|
||
first place. But perhaps elflink.c did some for us. */
|
||
if (!h->def_regular)
|
||
sym->st_shndx = SHN_UNDEF;
|
||
}
|
||
|
||
/* Create the dynamic relocation. */
|
||
outrel.r_offset = pltoff_addr;
|
||
if (bfd_little_endian (output_bfd))
|
||
outrel.r_info = ELFNN_R_INFO (h->dynindx, R_IA64_IPLTLSB);
|
||
else
|
||
outrel.r_info = ELFNN_R_INFO (h->dynindx, R_IA64_IPLTMSB);
|
||
outrel.r_addend = 0;
|
||
|
||
/* This is fun. In the .IA_64.pltoff section, we've got entries
|
||
that correspond both to real PLT entries, and those that
|
||
happened to resolve to local symbols but need to be created
|
||
to satisfy @pltoff relocations. The .rela.IA_64.pltoff
|
||
relocations for the real PLT should come at the end of the
|
||
section, so that they can be indexed by plt entry at runtime.
|
||
|
||
We emitted all of the relocations for the non-PLT @pltoff
|
||
entries during relocate_section. So we can consider the
|
||
existing sec->reloc_count to be the base of the array of
|
||
PLT relocations. */
|
||
|
||
loc = ia64_info->rel_pltoff_sec->contents;
|
||
loc += ((ia64_info->rel_pltoff_sec->reloc_count + plt_index)
|
||
* sizeof (ElfNN_External_Rela));
|
||
bfd_elfNN_swap_reloca_out (output_bfd, &outrel, loc);
|
||
}
|
||
|
||
/* Mark some specially defined symbols as absolute. */
|
||
if (h == ia64_info->root.hdynamic
|
||
|| h == ia64_info->root.hgot
|
||
|| h == ia64_info->root.hplt)
|
||
sym->st_shndx = SHN_ABS;
|
||
|
||
return TRUE;
|
||
}
|
||
|
||
static bfd_boolean
|
||
elfNN_ia64_finish_dynamic_sections (bfd *abfd,
|
||
struct bfd_link_info *info)
|
||
{
|
||
struct elfNN_ia64_link_hash_table *ia64_info;
|
||
bfd *dynobj;
|
||
|
||
ia64_info = elfNN_ia64_hash_table (info);
|
||
if (ia64_info == NULL)
|
||
return FALSE;
|
||
|
||
dynobj = ia64_info->root.dynobj;
|
||
|
||
if (ia64_info->root.dynamic_sections_created)
|
||
{
|
||
ElfNN_External_Dyn *dyncon, *dynconend;
|
||
asection *sdyn, *sgotplt;
|
||
bfd_vma gp_val;
|
||
|
||
sdyn = bfd_get_linker_section (dynobj, ".dynamic");
|
||
sgotplt = ia64_info->root.sgotplt;
|
||
BFD_ASSERT (sdyn != NULL);
|
||
dyncon = (ElfNN_External_Dyn *) sdyn->contents;
|
||
dynconend = (ElfNN_External_Dyn *) (sdyn->contents + sdyn->size);
|
||
|
||
gp_val = _bfd_get_gp_value (abfd);
|
||
|
||
for (; dyncon < dynconend; dyncon++)
|
||
{
|
||
Elf_Internal_Dyn dyn;
|
||
|
||
bfd_elfNN_swap_dyn_in (dynobj, dyncon, &dyn);
|
||
|
||
switch (dyn.d_tag)
|
||
{
|
||
case DT_PLTGOT:
|
||
dyn.d_un.d_ptr = gp_val;
|
||
break;
|
||
|
||
case DT_PLTRELSZ:
|
||
dyn.d_un.d_val = (ia64_info->minplt_entries
|
||
* sizeof (ElfNN_External_Rela));
|
||
break;
|
||
|
||
case DT_JMPREL:
|
||
/* See the comment above in finish_dynamic_symbol. */
|
||
dyn.d_un.d_ptr = (ia64_info->rel_pltoff_sec->output_section->vma
|
||
+ ia64_info->rel_pltoff_sec->output_offset
|
||
+ (ia64_info->rel_pltoff_sec->reloc_count
|
||
* sizeof (ElfNN_External_Rela)));
|
||
break;
|
||
|
||
case DT_IA_64_PLT_RESERVE:
|
||
dyn.d_un.d_ptr = (sgotplt->output_section->vma
|
||
+ sgotplt->output_offset);
|
||
break;
|
||
}
|
||
|
||
bfd_elfNN_swap_dyn_out (abfd, &dyn, dyncon);
|
||
}
|
||
|
||
/* Initialize the PLT0 entry. */
|
||
if (ia64_info->root.splt)
|
||
{
|
||
bfd_byte *loc = ia64_info->root.splt->contents;
|
||
bfd_vma pltres;
|
||
|
||
memcpy (loc, plt_header, PLT_HEADER_SIZE);
|
||
|
||
pltres = (sgotplt->output_section->vma
|
||
+ sgotplt->output_offset
|
||
- gp_val);
|
||
|
||
ia64_elf_install_value (loc+1, pltres, R_IA64_GPREL22);
|
||
}
|
||
}
|
||
|
||
return TRUE;
|
||
}
|
||
|
||
/* ELF file flag handling: */
|
||
|
||
/* Function to keep IA-64 specific file flags. */
|
||
static bfd_boolean
|
||
elfNN_ia64_set_private_flags (bfd *abfd, flagword flags)
|
||
{
|
||
BFD_ASSERT (!elf_flags_init (abfd)
|
||
|| elf_elfheader (abfd)->e_flags == flags);
|
||
|
||
elf_elfheader (abfd)->e_flags = flags;
|
||
elf_flags_init (abfd) = TRUE;
|
||
return TRUE;
|
||
}
|
||
|
||
/* Merge backend specific data from an object file to the output
|
||
object file when linking. */
|
||
static bfd_boolean
|
||
elfNN_ia64_merge_private_bfd_data (bfd *ibfd, struct bfd_link_info *info)
|
||
{
|
||
bfd *obfd = info->output_bfd;
|
||
flagword out_flags;
|
||
flagword in_flags;
|
||
bfd_boolean ok = TRUE;
|
||
|
||
/* Don't even pretend to support mixed-format linking. */
|
||
if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour
|
||
|| bfd_get_flavour (obfd) != bfd_target_elf_flavour)
|
||
return FALSE;
|
||
|
||
in_flags = elf_elfheader (ibfd)->e_flags;
|
||
out_flags = elf_elfheader (obfd)->e_flags;
|
||
|
||
if (! elf_flags_init (obfd))
|
||
{
|
||
elf_flags_init (obfd) = TRUE;
|
||
elf_elfheader (obfd)->e_flags = in_flags;
|
||
|
||
if (bfd_get_arch (obfd) == bfd_get_arch (ibfd)
|
||
&& bfd_get_arch_info (obfd)->the_default)
|
||
{
|
||
return bfd_set_arch_mach (obfd, bfd_get_arch (ibfd),
|
||
bfd_get_mach (ibfd));
|
||
}
|
||
|
||
return TRUE;
|
||
}
|
||
|
||
/* Check flag compatibility. */
|
||
if (in_flags == out_flags)
|
||
return TRUE;
|
||
|
||
/* Output has EF_IA_64_REDUCEDFP set only if all inputs have it set. */
|
||
if (!(in_flags & EF_IA_64_REDUCEDFP) && (out_flags & EF_IA_64_REDUCEDFP))
|
||
elf_elfheader (obfd)->e_flags &= ~EF_IA_64_REDUCEDFP;
|
||
|
||
if ((in_flags & EF_IA_64_TRAPNIL) != (out_flags & EF_IA_64_TRAPNIL))
|
||
{
|
||
_bfd_error_handler
|
||
(_("%B: linking trap-on-NULL-dereference with non-trapping files"),
|
||
ibfd);
|
||
|
||
bfd_set_error (bfd_error_bad_value);
|
||
ok = FALSE;
|
||
}
|
||
if ((in_flags & EF_IA_64_BE) != (out_flags & EF_IA_64_BE))
|
||
{
|
||
_bfd_error_handler
|
||
(_("%B: linking big-endian files with little-endian files"),
|
||
ibfd);
|
||
|
||
bfd_set_error (bfd_error_bad_value);
|
||
ok = FALSE;
|
||
}
|
||
if ((in_flags & EF_IA_64_ABI64) != (out_flags & EF_IA_64_ABI64))
|
||
{
|
||
_bfd_error_handler
|
||
(_("%B: linking 64-bit files with 32-bit files"),
|
||
ibfd);
|
||
|
||
bfd_set_error (bfd_error_bad_value);
|
||
ok = FALSE;
|
||
}
|
||
if ((in_flags & EF_IA_64_CONS_GP) != (out_flags & EF_IA_64_CONS_GP))
|
||
{
|
||
_bfd_error_handler
|
||
(_("%B: linking constant-gp files with non-constant-gp files"),
|
||
ibfd);
|
||
|
||
bfd_set_error (bfd_error_bad_value);
|
||
ok = FALSE;
|
||
}
|
||
if ((in_flags & EF_IA_64_NOFUNCDESC_CONS_GP)
|
||
!= (out_flags & EF_IA_64_NOFUNCDESC_CONS_GP))
|
||
{
|
||
_bfd_error_handler
|
||
(_("%B: linking auto-pic files with non-auto-pic files"),
|
||
ibfd);
|
||
|
||
bfd_set_error (bfd_error_bad_value);
|
||
ok = FALSE;
|
||
}
|
||
|
||
return ok;
|
||
}
|
||
|
||
static bfd_boolean
|
||
elfNN_ia64_print_private_bfd_data (bfd *abfd, void * ptr)
|
||
{
|
||
FILE *file = (FILE *) ptr;
|
||
flagword flags = elf_elfheader (abfd)->e_flags;
|
||
|
||
BFD_ASSERT (abfd != NULL && ptr != NULL);
|
||
|
||
fprintf (file, "private flags = %s%s%s%s%s%s%s%s\n",
|
||
(flags & EF_IA_64_TRAPNIL) ? "TRAPNIL, " : "",
|
||
(flags & EF_IA_64_EXT) ? "EXT, " : "",
|
||
(flags & EF_IA_64_BE) ? "BE, " : "LE, ",
|
||
(flags & EF_IA_64_REDUCEDFP) ? "REDUCEDFP, " : "",
|
||
(flags & EF_IA_64_CONS_GP) ? "CONS_GP, " : "",
|
||
(flags & EF_IA_64_NOFUNCDESC_CONS_GP) ? "NOFUNCDESC_CONS_GP, " : "",
|
||
(flags & EF_IA_64_ABSOLUTE) ? "ABSOLUTE, " : "",
|
||
(flags & EF_IA_64_ABI64) ? "ABI64" : "ABI32");
|
||
|
||
_bfd_elf_print_private_bfd_data (abfd, ptr);
|
||
return TRUE;
|
||
}
|
||
|
||
static enum elf_reloc_type_class
|
||
elfNN_ia64_reloc_type_class (const struct bfd_link_info *info ATTRIBUTE_UNUSED,
|
||
const asection *rel_sec ATTRIBUTE_UNUSED,
|
||
const Elf_Internal_Rela *rela)
|
||
{
|
||
switch ((int) ELFNN_R_TYPE (rela->r_info))
|
||
{
|
||
case R_IA64_REL32MSB:
|
||
case R_IA64_REL32LSB:
|
||
case R_IA64_REL64MSB:
|
||
case R_IA64_REL64LSB:
|
||
return reloc_class_relative;
|
||
case R_IA64_IPLTMSB:
|
||
case R_IA64_IPLTLSB:
|
||
return reloc_class_plt;
|
||
case R_IA64_COPY:
|
||
return reloc_class_copy;
|
||
default:
|
||
return reloc_class_normal;
|
||
}
|
||
}
|
||
|
||
static const struct bfd_elf_special_section elfNN_ia64_special_sections[] =
|
||
{
|
||
{ STRING_COMMA_LEN (".sbss"), -1, SHT_NOBITS, SHF_ALLOC + SHF_WRITE + SHF_IA_64_SHORT },
|
||
{ STRING_COMMA_LEN (".sdata"), -1, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE + SHF_IA_64_SHORT },
|
||
{ NULL, 0, 0, 0, 0 }
|
||
};
|
||
|
||
static bfd_boolean
|
||
elfNN_ia64_object_p (bfd *abfd)
|
||
{
|
||
asection *sec;
|
||
asection *group, *unwi, *unw;
|
||
flagword flags;
|
||
const char *name;
|
||
char *unwi_name, *unw_name;
|
||
bfd_size_type amt;
|
||
|
||
if (abfd->flags & DYNAMIC)
|
||
return TRUE;
|
||
|
||
/* Flags for fake group section. */
|
||
flags = (SEC_LINKER_CREATED | SEC_GROUP | SEC_LINK_ONCE
|
||
| SEC_EXCLUDE);
|
||
|
||
/* We add a fake section group for each .gnu.linkonce.t.* section,
|
||
which isn't in a section group, and its unwind sections. */
|
||
for (sec = abfd->sections; sec != NULL; sec = sec->next)
|
||
{
|
||
if (elf_sec_group (sec) == NULL
|
||
&& ((sec->flags & (SEC_LINK_ONCE | SEC_CODE | SEC_GROUP))
|
||
== (SEC_LINK_ONCE | SEC_CODE))
|
||
&& CONST_STRNEQ (sec->name, ".gnu.linkonce.t."))
|
||
{
|
||
name = sec->name + 16;
|
||
|
||
amt = strlen (name) + sizeof (".gnu.linkonce.ia64unwi.");
|
||
unwi_name = bfd_alloc (abfd, amt);
|
||
if (!unwi_name)
|
||
return FALSE;
|
||
|
||
strcpy (stpcpy (unwi_name, ".gnu.linkonce.ia64unwi."), name);
|
||
unwi = bfd_get_section_by_name (abfd, unwi_name);
|
||
|
||
amt = strlen (name) + sizeof (".gnu.linkonce.ia64unw.");
|
||
unw_name = bfd_alloc (abfd, amt);
|
||
if (!unw_name)
|
||
return FALSE;
|
||
|
||
strcpy (stpcpy (unw_name, ".gnu.linkonce.ia64unw."), name);
|
||
unw = bfd_get_section_by_name (abfd, unw_name);
|
||
|
||
/* We need to create a fake group section for it and its
|
||
unwind sections. */
|
||
group = bfd_make_section_anyway_with_flags (abfd, name,
|
||
flags);
|
||
if (group == NULL)
|
||
return FALSE;
|
||
|
||
/* Move the fake group section to the beginning. */
|
||
bfd_section_list_remove (abfd, group);
|
||
bfd_section_list_prepend (abfd, group);
|
||
|
||
elf_next_in_group (group) = sec;
|
||
|
||
elf_group_name (sec) = name;
|
||
elf_next_in_group (sec) = sec;
|
||
elf_sec_group (sec) = group;
|
||
|
||
if (unwi)
|
||
{
|
||
elf_group_name (unwi) = name;
|
||
elf_next_in_group (unwi) = sec;
|
||
elf_next_in_group (sec) = unwi;
|
||
elf_sec_group (unwi) = group;
|
||
}
|
||
|
||
if (unw)
|
||
{
|
||
elf_group_name (unw) = name;
|
||
if (unwi)
|
||
{
|
||
elf_next_in_group (unw) = elf_next_in_group (unwi);
|
||
elf_next_in_group (unwi) = unw;
|
||
}
|
||
else
|
||
{
|
||
elf_next_in_group (unw) = sec;
|
||
elf_next_in_group (sec) = unw;
|
||
}
|
||
elf_sec_group (unw) = group;
|
||
}
|
||
|
||
/* Fake SHT_GROUP section header. */
|
||
elf_section_data (group)->this_hdr.bfd_section = group;
|
||
elf_section_data (group)->this_hdr.sh_type = SHT_GROUP;
|
||
}
|
||
}
|
||
return TRUE;
|
||
}
|
||
|
||
static bfd_boolean
|
||
elfNN_ia64_hpux_vec (const bfd_target *vec)
|
||
{
|
||
extern const bfd_target ia64_elfNN_hpux_be_vec;
|
||
return (vec == &ia64_elfNN_hpux_be_vec);
|
||
}
|
||
|
||
static void
|
||
elfNN_hpux_post_process_headers (bfd *abfd,
|
||
struct bfd_link_info *info ATTRIBUTE_UNUSED)
|
||
{
|
||
Elf_Internal_Ehdr *i_ehdrp = elf_elfheader (abfd);
|
||
|
||
i_ehdrp->e_ident[EI_OSABI] = get_elf_backend_data (abfd)->elf_osabi;
|
||
i_ehdrp->e_ident[EI_ABIVERSION] = 1;
|
||
}
|
||
|
||
static bfd_boolean
|
||
elfNN_hpux_backend_section_from_bfd_section (bfd *abfd ATTRIBUTE_UNUSED,
|
||
asection *sec, int *retval)
|
||
{
|
||
if (bfd_is_com_section (sec))
|
||
{
|
||
*retval = SHN_IA_64_ANSI_COMMON;
|
||
return TRUE;
|
||
}
|
||
return FALSE;
|
||
}
|
||
|
||
static void
|
||
elfNN_hpux_backend_symbol_processing (bfd *abfd ATTRIBUTE_UNUSED,
|
||
asymbol *asym)
|
||
{
|
||
elf_symbol_type *elfsym = (elf_symbol_type *) asym;
|
||
|
||
switch (elfsym->internal_elf_sym.st_shndx)
|
||
{
|
||
case SHN_IA_64_ANSI_COMMON:
|
||
asym->section = bfd_com_section_ptr;
|
||
asym->value = elfsym->internal_elf_sym.st_size;
|
||
asym->flags &= ~BSF_GLOBAL;
|
||
break;
|
||
}
|
||
}
|
||
|
||
#define TARGET_LITTLE_SYM ia64_elfNN_le_vec
|
||
#define TARGET_LITTLE_NAME "elfNN-ia64-little"
|
||
#define TARGET_BIG_SYM ia64_elfNN_be_vec
|
||
#define TARGET_BIG_NAME "elfNN-ia64-big"
|
||
#define ELF_ARCH bfd_arch_ia64
|
||
#define ELF_TARGET_ID IA64_ELF_DATA
|
||
#define ELF_MACHINE_CODE EM_IA_64
|
||
#define ELF_MACHINE_ALT1 1999 /* EAS2.3 */
|
||
#define ELF_MACHINE_ALT2 1998 /* EAS2.2 */
|
||
#define ELF_MAXPAGESIZE 0x10000 /* 64KB */
|
||
#define ELF_COMMONPAGESIZE 0x4000 /* 16KB */
|
||
|
||
#define elf_backend_section_from_shdr \
|
||
elfNN_ia64_section_from_shdr
|
||
#define elf_backend_section_flags \
|
||
elfNN_ia64_section_flags
|
||
#define elf_backend_fake_sections \
|
||
elfNN_ia64_fake_sections
|
||
#define elf_backend_final_write_processing \
|
||
elfNN_ia64_final_write_processing
|
||
#define elf_backend_add_symbol_hook \
|
||
elfNN_ia64_add_symbol_hook
|
||
#define elf_backend_additional_program_headers \
|
||
elfNN_ia64_additional_program_headers
|
||
#define elf_backend_modify_segment_map \
|
||
elfNN_ia64_modify_segment_map
|
||
#define elf_backend_modify_program_headers \
|
||
elfNN_ia64_modify_program_headers
|
||
#define elf_info_to_howto \
|
||
elfNN_ia64_info_to_howto
|
||
|
||
#define bfd_elfNN_bfd_reloc_type_lookup \
|
||
ia64_elf_reloc_type_lookup
|
||
#define bfd_elfNN_bfd_reloc_name_lookup \
|
||
ia64_elf_reloc_name_lookup
|
||
#define bfd_elfNN_bfd_is_local_label_name \
|
||
elfNN_ia64_is_local_label_name
|
||
#define bfd_elfNN_bfd_relax_section \
|
||
elfNN_ia64_relax_section
|
||
|
||
#define elf_backend_object_p \
|
||
elfNN_ia64_object_p
|
||
|
||
/* Stuff for the BFD linker: */
|
||
#define bfd_elfNN_bfd_link_hash_table_create \
|
||
elfNN_ia64_hash_table_create
|
||
#define elf_backend_create_dynamic_sections \
|
||
elfNN_ia64_create_dynamic_sections
|
||
#define elf_backend_check_relocs \
|
||
elfNN_ia64_check_relocs
|
||
#define elf_backend_adjust_dynamic_symbol \
|
||
elfNN_ia64_adjust_dynamic_symbol
|
||
#define elf_backend_size_dynamic_sections \
|
||
elfNN_ia64_size_dynamic_sections
|
||
#define elf_backend_omit_section_dynsym \
|
||
((bfd_boolean (*) (bfd *, struct bfd_link_info *, asection *)) bfd_true)
|
||
#define elf_backend_relocate_section \
|
||
elfNN_ia64_relocate_section
|
||
#define elf_backend_finish_dynamic_symbol \
|
||
elfNN_ia64_finish_dynamic_symbol
|
||
#define elf_backend_finish_dynamic_sections \
|
||
elfNN_ia64_finish_dynamic_sections
|
||
#define bfd_elfNN_bfd_final_link \
|
||
elfNN_ia64_final_link
|
||
|
||
#define bfd_elfNN_bfd_merge_private_bfd_data \
|
||
elfNN_ia64_merge_private_bfd_data
|
||
#define bfd_elfNN_bfd_set_private_flags \
|
||
elfNN_ia64_set_private_flags
|
||
#define bfd_elfNN_bfd_print_private_bfd_data \
|
||
elfNN_ia64_print_private_bfd_data
|
||
|
||
#define elf_backend_plt_readonly 1
|
||
#define elf_backend_want_plt_sym 0
|
||
#define elf_backend_plt_alignment 5
|
||
#define elf_backend_got_header_size 0
|
||
#define elf_backend_want_got_plt 1
|
||
#define elf_backend_may_use_rel_p 1
|
||
#define elf_backend_may_use_rela_p 1
|
||
#define elf_backend_default_use_rela_p 1
|
||
#define elf_backend_want_dynbss 0
|
||
#define elf_backend_copy_indirect_symbol elfNN_ia64_hash_copy_indirect
|
||
#define elf_backend_hide_symbol elfNN_ia64_hash_hide_symbol
|
||
#define elf_backend_fixup_symbol _bfd_elf_link_hash_fixup_symbol
|
||
#define elf_backend_reloc_type_class elfNN_ia64_reloc_type_class
|
||
#define elf_backend_rela_normal 1
|
||
#define elf_backend_dtrel_excludes_plt 1
|
||
#define elf_backend_special_sections elfNN_ia64_special_sections
|
||
#define elf_backend_default_execstack 0
|
||
|
||
/* FIXME: PR 290: The Intel C compiler generates SHT_IA_64_UNWIND with
|
||
SHF_LINK_ORDER. But it doesn't set the sh_link or sh_info fields.
|
||
We don't want to flood users with so many error messages. We turn
|
||
off the warning for now. It will be turned on later when the Intel
|
||
compiler is fixed. */
|
||
#define elf_backend_link_order_error_handler NULL
|
||
|
||
#include "elfNN-target.h"
|
||
|
||
/* HPUX-specific vectors. */
|
||
|
||
#undef TARGET_LITTLE_SYM
|
||
#undef TARGET_LITTLE_NAME
|
||
#undef TARGET_BIG_SYM
|
||
#define TARGET_BIG_SYM ia64_elfNN_hpux_be_vec
|
||
#undef TARGET_BIG_NAME
|
||
#define TARGET_BIG_NAME "elfNN-ia64-hpux-big"
|
||
|
||
/* These are HP-UX specific functions. */
|
||
|
||
#undef elf_backend_post_process_headers
|
||
#define elf_backend_post_process_headers elfNN_hpux_post_process_headers
|
||
|
||
#undef elf_backend_section_from_bfd_section
|
||
#define elf_backend_section_from_bfd_section elfNN_hpux_backend_section_from_bfd_section
|
||
|
||
#undef elf_backend_symbol_processing
|
||
#define elf_backend_symbol_processing elfNN_hpux_backend_symbol_processing
|
||
|
||
#undef elf_backend_want_p_paddr_set_to_zero
|
||
#define elf_backend_want_p_paddr_set_to_zero 1
|
||
|
||
#undef ELF_COMMONPAGESIZE
|
||
#undef ELF_OSABI
|
||
#define ELF_OSABI ELFOSABI_HPUX
|
||
|
||
#undef elfNN_bed
|
||
#define elfNN_bed elfNN_ia64_hpux_bed
|
||
|
||
#include "elfNN-target.h"
|