4826 lines
140 KiB
C
4826 lines
140 KiB
C
/* IA-64 support for 64-bit ELF
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Copyright 1998, 1999, 2000, 2001, 2002 Free Software Foundation, Inc.
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Contributed by David Mosberger-Tang <davidm@hpl.hp.com>
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This file is part of BFD, the Binary File Descriptor library.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
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#include "bfd.h"
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#include "sysdep.h"
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#include "libbfd.h"
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#include "elf-bfd.h"
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#include "opcode/ia64.h"
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#include "elf/ia64.h"
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/* THE RULES for all the stuff the linker creates --
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GOT Entries created in response to LTOFF or LTOFF_FPTR
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relocations. Dynamic relocs created for dynamic
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symbols in an application; REL relocs for locals
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in a shared library.
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FPTR The canonical function descriptor. Created for local
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symbols in applications. Descriptors for dynamic symbols
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and local symbols in shared libraries are created by
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ld.so. Thus there are no dynamic relocs against these
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objects. The FPTR relocs for such _are_ passed through
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to the dynamic relocation tables.
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FULL_PLT Created for a PCREL21B relocation against a dynamic symbol.
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Requires the creation of a PLTOFF entry. This does not
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require any dynamic relocations.
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PLTOFF Created by PLTOFF relocations. For local symbols, this
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is an alternate function descriptor, and in shared libraries
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requires two REL relocations. Note that this cannot be
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transformed into an FPTR relocation, since it must be in
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range of the GP. For dynamic symbols, this is a function
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descriptor for a MIN_PLT entry, and requires one IPLT reloc.
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MIN_PLT Created by PLTOFF entries against dynamic symbols. This
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does not reqire dynamic relocations. */
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#define NELEMS(a) ((int) (sizeof (a) / sizeof ((a)[0])))
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typedef struct bfd_hash_entry *(*new_hash_entry_func)
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PARAMS ((struct bfd_hash_entry *, struct bfd_hash_table *, const char *));
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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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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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/* Next addend in the list. */
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struct elfNN_ia64_dyn_sym_info *next;
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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 derrived 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. */
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struct elfNN_ia64_dyn_reloc_entry
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{
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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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} *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;
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unsigned dtpmod_done : 1;
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unsigned dtprel_done : 1;
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/* True for the different kinds of linker data we want created. */
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unsigned want_got : 1;
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unsigned want_fptr : 1;
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unsigned want_ltoff_fptr : 1;
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unsigned want_plt : 1;
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unsigned want_plt2 : 1;
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unsigned want_pltoff : 1;
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unsigned want_tprel : 1;
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unsigned want_dtpmod : 1;
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unsigned want_dtprel : 1;
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};
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struct elfNN_ia64_local_hash_entry
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{
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struct bfd_hash_entry root;
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struct elfNN_ia64_dyn_sym_info *info;
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/* True if this hash entry's addends was translated for
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SHF_MERGE optimization. */
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unsigned sec_merge_done : 1;
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};
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struct elfNN_ia64_local_hash_table
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{
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struct bfd_hash_table root;
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/* No additional fields for now. */
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};
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struct elfNN_ia64_link_hash_entry
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{
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struct elf_link_hash_entry root;
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struct elfNN_ia64_dyn_sym_info *info;
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};
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struct elfNN_ia64_link_hash_table
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{
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/* The main hash table. */
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struct elf_link_hash_table root;
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asection *got_sec; /* the linkage table section (or NULL) */
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asection *rel_got_sec; /* dynamic relocation section for same */
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asection *fptr_sec; /* function descriptor table (or NULL) */
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asection *plt_sec; /* the primary plt section (or NULL) */
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asection *pltoff_sec; /* private descriptors for plt (or NULL) */
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asection *rel_pltoff_sec; /* dynamic relocation section for same */
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bfd_size_type minplt_entries; /* number of minplt entries */
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unsigned reltext : 1; /* are there relocs against readonly sections? */
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struct elfNN_ia64_local_hash_table loc_hash_table;
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};
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#define elfNN_ia64_hash_table(p) \
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((struct elfNN_ia64_link_hash_table *) ((p)->hash))
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static bfd_reloc_status_type elfNN_ia64_reloc
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PARAMS ((bfd *abfd, arelent *reloc, asymbol *sym, PTR data,
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asection *input_section, bfd *output_bfd, char **error_message));
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static reloc_howto_type * lookup_howto
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PARAMS ((unsigned int rtype));
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static reloc_howto_type *elfNN_ia64_reloc_type_lookup
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PARAMS ((bfd *abfd, bfd_reloc_code_real_type bfd_code));
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static void elfNN_ia64_info_to_howto
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PARAMS ((bfd *abfd, arelent *bfd_reloc, ElfNN_Internal_Rela *elf_reloc));
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static boolean elfNN_ia64_relax_section
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PARAMS((bfd *abfd, asection *sec, struct bfd_link_info *link_info,
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boolean *again));
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static boolean is_unwind_section_name
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PARAMS ((bfd *abfd, const char *));
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static boolean elfNN_ia64_section_from_shdr
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PARAMS ((bfd *, ElfNN_Internal_Shdr *, const char *));
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static boolean elfNN_ia64_section_flags
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PARAMS ((flagword *, ElfNN_Internal_Shdr *));
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static boolean elfNN_ia64_fake_sections
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PARAMS ((bfd *abfd, ElfNN_Internal_Shdr *hdr, asection *sec));
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static void elfNN_ia64_final_write_processing
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PARAMS ((bfd *abfd, boolean linker));
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static boolean elfNN_ia64_add_symbol_hook
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PARAMS ((bfd *abfd, struct bfd_link_info *info, const Elf_Internal_Sym *sym,
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const char **namep, flagword *flagsp, asection **secp,
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bfd_vma *valp));
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static boolean elfNN_ia64_aix_vec
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PARAMS ((const bfd_target *vec));
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static boolean elfNN_ia64_aix_add_symbol_hook
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PARAMS ((bfd *abfd, struct bfd_link_info *info, const Elf_Internal_Sym *sym,
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const char **namep, flagword *flagsp, asection **secp,
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bfd_vma *valp));
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static boolean elfNN_ia64_aix_link_add_symbols
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PARAMS ((bfd *abfd, struct bfd_link_info *info));
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static int elfNN_ia64_additional_program_headers
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PARAMS ((bfd *abfd));
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static boolean elfNN_ia64_modify_segment_map
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PARAMS ((bfd *));
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static boolean elfNN_ia64_is_local_label_name
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PARAMS ((bfd *abfd, const char *name));
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static boolean elfNN_ia64_dynamic_symbol_p
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PARAMS ((struct elf_link_hash_entry *h, struct bfd_link_info *info));
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static boolean elfNN_ia64_local_hash_table_init
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PARAMS ((struct elfNN_ia64_local_hash_table *ht, bfd *abfd,
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new_hash_entry_func new));
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static struct bfd_hash_entry *elfNN_ia64_new_loc_hash_entry
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PARAMS ((struct bfd_hash_entry *entry, struct bfd_hash_table *table,
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const char *string));
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static struct bfd_hash_entry *elfNN_ia64_new_elf_hash_entry
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PARAMS ((struct bfd_hash_entry *entry, struct bfd_hash_table *table,
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const char *string));
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static void elfNN_ia64_hash_copy_indirect
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PARAMS ((struct elf_backend_data *, struct elf_link_hash_entry *,
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struct elf_link_hash_entry *));
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static void elfNN_ia64_hash_hide_symbol
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PARAMS ((struct bfd_link_info *, struct elf_link_hash_entry *, boolean));
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static struct bfd_link_hash_table *elfNN_ia64_hash_table_create
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PARAMS ((bfd *abfd));
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static struct elfNN_ia64_local_hash_entry *elfNN_ia64_local_hash_lookup
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PARAMS ((struct elfNN_ia64_local_hash_table *table, const char *string,
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boolean create, boolean copy));
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static boolean elfNN_ia64_global_dyn_sym_thunk
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PARAMS ((struct bfd_hash_entry *, PTR));
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static boolean elfNN_ia64_local_dyn_sym_thunk
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PARAMS ((struct bfd_hash_entry *, PTR));
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static void elfNN_ia64_dyn_sym_traverse
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PARAMS ((struct elfNN_ia64_link_hash_table *ia64_info,
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boolean (*func) (struct elfNN_ia64_dyn_sym_info *, PTR),
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PTR info));
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static boolean elfNN_ia64_create_dynamic_sections
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PARAMS ((bfd *abfd, struct bfd_link_info *info));
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static struct elfNN_ia64_local_hash_entry * get_local_sym_hash
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PARAMS ((struct elfNN_ia64_link_hash_table *ia64_info,
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bfd *abfd, const Elf_Internal_Rela *rel, boolean create));
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static struct elfNN_ia64_dyn_sym_info * get_dyn_sym_info
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PARAMS ((struct elfNN_ia64_link_hash_table *ia64_info,
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struct elf_link_hash_entry *h,
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bfd *abfd, const Elf_Internal_Rela *rel, boolean create));
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static asection *get_got
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PARAMS ((bfd *abfd, struct bfd_link_info *info,
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struct elfNN_ia64_link_hash_table *ia64_info));
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static asection *get_fptr
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PARAMS ((bfd *abfd, struct bfd_link_info *info,
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struct elfNN_ia64_link_hash_table *ia64_info));
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static asection *get_pltoff
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PARAMS ((bfd *abfd, struct bfd_link_info *info,
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struct elfNN_ia64_link_hash_table *ia64_info));
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static asection *get_reloc_section
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PARAMS ((bfd *abfd, struct elfNN_ia64_link_hash_table *ia64_info,
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asection *sec, boolean create));
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static boolean count_dyn_reloc
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PARAMS ((bfd *abfd, struct elfNN_ia64_dyn_sym_info *dyn_i,
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asection *srel, int type));
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static boolean elfNN_ia64_check_relocs
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PARAMS ((bfd *abfd, struct bfd_link_info *info, asection *sec,
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const Elf_Internal_Rela *relocs));
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static boolean elfNN_ia64_adjust_dynamic_symbol
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PARAMS ((struct bfd_link_info *info, struct elf_link_hash_entry *h));
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static long global_sym_index
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PARAMS ((struct elf_link_hash_entry *h));
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static boolean allocate_fptr
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PARAMS ((struct elfNN_ia64_dyn_sym_info *dyn_i, PTR data));
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static boolean allocate_global_data_got
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PARAMS ((struct elfNN_ia64_dyn_sym_info *dyn_i, PTR data));
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static boolean allocate_global_fptr_got
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PARAMS ((struct elfNN_ia64_dyn_sym_info *dyn_i, PTR data));
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static boolean allocate_local_got
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PARAMS ((struct elfNN_ia64_dyn_sym_info *dyn_i, PTR data));
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static boolean allocate_pltoff_entries
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PARAMS ((struct elfNN_ia64_dyn_sym_info *dyn_i, PTR data));
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static boolean allocate_plt_entries
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PARAMS ((struct elfNN_ia64_dyn_sym_info *dyn_i, PTR data));
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static boolean allocate_plt2_entries
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PARAMS ((struct elfNN_ia64_dyn_sym_info *dyn_i, PTR data));
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static boolean allocate_dynrel_entries
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PARAMS ((struct elfNN_ia64_dyn_sym_info *dyn_i, PTR data));
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static boolean elfNN_ia64_size_dynamic_sections
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PARAMS ((bfd *output_bfd, struct bfd_link_info *info));
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static bfd_reloc_status_type elfNN_ia64_install_value
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PARAMS ((bfd *abfd, bfd_byte *hit_addr, bfd_vma val, unsigned int r_type));
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static void elfNN_ia64_install_dyn_reloc
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PARAMS ((bfd *abfd, struct bfd_link_info *info, asection *sec,
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asection *srel, bfd_vma offset, unsigned int type,
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long dynindx, bfd_vma addend));
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static bfd_vma set_got_entry
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PARAMS ((bfd *abfd, struct bfd_link_info *info,
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struct elfNN_ia64_dyn_sym_info *dyn_i, long dynindx,
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bfd_vma addend, bfd_vma value, unsigned int dyn_r_type));
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static bfd_vma set_fptr_entry
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PARAMS ((bfd *abfd, struct bfd_link_info *info,
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struct elfNN_ia64_dyn_sym_info *dyn_i,
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bfd_vma value));
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static bfd_vma set_pltoff_entry
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PARAMS ((bfd *abfd, struct bfd_link_info *info,
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struct elfNN_ia64_dyn_sym_info *dyn_i,
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bfd_vma value, boolean));
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static bfd_vma elfNN_ia64_tprel_base
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PARAMS ((struct bfd_link_info *info));
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static bfd_vma elfNN_ia64_dtprel_base
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PARAMS ((struct bfd_link_info *info));
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static int elfNN_ia64_unwind_entry_compare
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PARAMS ((const PTR, const PTR));
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static boolean elfNN_ia64_final_link
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PARAMS ((bfd *abfd, struct bfd_link_info *info));
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static boolean elfNN_ia64_relocate_section
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PARAMS ((bfd *output_bfd, struct bfd_link_info *info, bfd *input_bfd,
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asection *input_section, bfd_byte *contents,
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Elf_Internal_Rela *relocs, Elf_Internal_Sym *local_syms,
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asection **local_sections));
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static boolean elfNN_ia64_finish_dynamic_symbol
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PARAMS ((bfd *output_bfd, struct bfd_link_info *info,
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struct elf_link_hash_entry *h, Elf_Internal_Sym *sym));
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static boolean elfNN_ia64_finish_dynamic_sections
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PARAMS ((bfd *abfd, struct bfd_link_info *info));
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static boolean elfNN_ia64_set_private_flags
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PARAMS ((bfd *abfd, flagword flags));
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static boolean elfNN_ia64_merge_private_bfd_data
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PARAMS ((bfd *ibfd, bfd *obfd));
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static boolean elfNN_ia64_print_private_bfd_data
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PARAMS ((bfd *abfd, PTR ptr));
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static enum elf_reloc_type_class elfNN_ia64_reloc_type_class
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PARAMS ((const Elf_Internal_Rela *));
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static boolean elfNN_ia64_hpux_vec
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PARAMS ((const bfd_target *vec));
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static void elfNN_hpux_post_process_headers
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PARAMS ((bfd *abfd, struct bfd_link_info *info));
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boolean elfNN_hpux_backend_section_from_bfd_section
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PARAMS ((bfd *abfd, asection *sec, int *retval));
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/* ia64-specific relocation. */
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/* Perform a relocation. Not much to do here as all the hard work is
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done in elfNN_ia64_final_link_relocate. */
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static bfd_reloc_status_type
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elfNN_ia64_reloc (abfd, reloc, sym, data, input_section,
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output_bfd, error_message)
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bfd *abfd ATTRIBUTE_UNUSED;
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arelent *reloc;
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asymbol *sym ATTRIBUTE_UNUSED;
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PTR data ATTRIBUTE_UNUSED;
|
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asection *input_section;
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bfd *output_bfd;
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char **error_message;
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{
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if (output_bfd)
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{
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reloc->address += input_section->output_offset;
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return bfd_reloc_ok;
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}
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*error_message = "Unsupported call to elfNN_ia64_reloc";
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return bfd_reloc_notsupported;
|
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}
|
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|
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#define IA64_HOWTO(TYPE, NAME, SIZE, PCREL, IN) \
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HOWTO (TYPE, 0, SIZE, 0, PCREL, 0, complain_overflow_signed, \
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elfNN_ia64_reloc, NAME, false, 0, 0, IN)
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|
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/* This table has to be sorted according to increasing number of the
|
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TYPE field. */
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static reloc_howto_type ia64_howto_table[] =
|
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{
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IA64_HOWTO (R_IA64_NONE, "NONE", 0, false, true),
|
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|
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IA64_HOWTO (R_IA64_IMM14, "IMM14", 0, false, true),
|
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IA64_HOWTO (R_IA64_IMM22, "IMM22", 0, false, true),
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IA64_HOWTO (R_IA64_IMM64, "IMM64", 0, false, true),
|
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IA64_HOWTO (R_IA64_DIR32MSB, "DIR32MSB", 2, false, true),
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IA64_HOWTO (R_IA64_DIR32LSB, "DIR32LSB", 2, false, true),
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IA64_HOWTO (R_IA64_DIR64MSB, "DIR64MSB", 4, false, true),
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IA64_HOWTO (R_IA64_DIR64LSB, "DIR64LSB", 4, false, true),
|
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|
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IA64_HOWTO (R_IA64_GPREL22, "GPREL22", 0, false, true),
|
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IA64_HOWTO (R_IA64_GPREL64I, "GPREL64I", 0, false, true),
|
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IA64_HOWTO (R_IA64_GPREL32MSB, "GPREL32MSB", 2, false, true),
|
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IA64_HOWTO (R_IA64_GPREL32LSB, "GPREL32LSB", 2, false, true),
|
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IA64_HOWTO (R_IA64_GPREL64MSB, "GPREL64MSB", 4, false, true),
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IA64_HOWTO (R_IA64_GPREL64LSB, "GPREL64LSB", 4, false, true),
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IA64_HOWTO (R_IA64_LTOFF22, "LTOFF22", 0, false, true),
|
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IA64_HOWTO (R_IA64_LTOFF64I, "LTOFF64I", 0, false, true),
|
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|
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IA64_HOWTO (R_IA64_PLTOFF22, "PLTOFF22", 0, false, true),
|
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IA64_HOWTO (R_IA64_PLTOFF64I, "PLTOFF64I", 0, false, true),
|
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IA64_HOWTO (R_IA64_PLTOFF64MSB, "PLTOFF64MSB", 4, false, true),
|
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IA64_HOWTO (R_IA64_PLTOFF64LSB, "PLTOFF64LSB", 4, false, true),
|
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|
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IA64_HOWTO (R_IA64_FPTR64I, "FPTR64I", 0, false, true),
|
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IA64_HOWTO (R_IA64_FPTR32MSB, "FPTR32MSB", 2, false, true),
|
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IA64_HOWTO (R_IA64_FPTR32LSB, "FPTR32LSB", 2, false, true),
|
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IA64_HOWTO (R_IA64_FPTR64MSB, "FPTR64MSB", 4, false, true),
|
||
IA64_HOWTO (R_IA64_FPTR64LSB, "FPTR64LSB", 4, false, true),
|
||
|
||
IA64_HOWTO (R_IA64_PCREL60B, "PCREL60B", 0, true, true),
|
||
IA64_HOWTO (R_IA64_PCREL21B, "PCREL21B", 0, true, true),
|
||
IA64_HOWTO (R_IA64_PCREL21M, "PCREL21M", 0, true, true),
|
||
IA64_HOWTO (R_IA64_PCREL21F, "PCREL21F", 0, true, true),
|
||
IA64_HOWTO (R_IA64_PCREL32MSB, "PCREL32MSB", 2, true, true),
|
||
IA64_HOWTO (R_IA64_PCREL32LSB, "PCREL32LSB", 2, true, true),
|
||
IA64_HOWTO (R_IA64_PCREL64MSB, "PCREL64MSB", 4, true, true),
|
||
IA64_HOWTO (R_IA64_PCREL64LSB, "PCREL64LSB", 4, true, true),
|
||
|
||
IA64_HOWTO (R_IA64_LTOFF_FPTR22, "LTOFF_FPTR22", 0, false, true),
|
||
IA64_HOWTO (R_IA64_LTOFF_FPTR64I, "LTOFF_FPTR64I", 0, false, true),
|
||
IA64_HOWTO (R_IA64_LTOFF_FPTR32MSB, "LTOFF_FPTR32MSB", 2, false, true),
|
||
IA64_HOWTO (R_IA64_LTOFF_FPTR32LSB, "LTOFF_FPTR32LSB", 2, false, true),
|
||
IA64_HOWTO (R_IA64_LTOFF_FPTR64MSB, "LTOFF_FPTR64MSB", 4, false, true),
|
||
IA64_HOWTO (R_IA64_LTOFF_FPTR64LSB, "LTOFF_FPTR64LSB", 4, false, true),
|
||
|
||
IA64_HOWTO (R_IA64_SEGREL32MSB, "SEGREL32MSB", 2, false, true),
|
||
IA64_HOWTO (R_IA64_SEGREL32LSB, "SEGREL32LSB", 2, false, true),
|
||
IA64_HOWTO (R_IA64_SEGREL64MSB, "SEGREL64MSB", 4, false, true),
|
||
IA64_HOWTO (R_IA64_SEGREL64LSB, "SEGREL64LSB", 4, false, true),
|
||
|
||
IA64_HOWTO (R_IA64_SECREL32MSB, "SECREL32MSB", 2, false, true),
|
||
IA64_HOWTO (R_IA64_SECREL32LSB, "SECREL32LSB", 2, false, true),
|
||
IA64_HOWTO (R_IA64_SECREL64MSB, "SECREL64MSB", 4, false, true),
|
||
IA64_HOWTO (R_IA64_SECREL64LSB, "SECREL64LSB", 4, false, true),
|
||
|
||
IA64_HOWTO (R_IA64_REL32MSB, "REL32MSB", 2, false, true),
|
||
IA64_HOWTO (R_IA64_REL32LSB, "REL32LSB", 2, false, true),
|
||
IA64_HOWTO (R_IA64_REL64MSB, "REL64MSB", 4, false, true),
|
||
IA64_HOWTO (R_IA64_REL64LSB, "REL64LSB", 4, false, true),
|
||
|
||
IA64_HOWTO (R_IA64_LTV32MSB, "LTV32MSB", 2, false, true),
|
||
IA64_HOWTO (R_IA64_LTV32LSB, "LTV32LSB", 2, false, true),
|
||
IA64_HOWTO (R_IA64_LTV64MSB, "LTV64MSB", 4, false, true),
|
||
IA64_HOWTO (R_IA64_LTV64LSB, "LTV64LSB", 4, false, true),
|
||
|
||
IA64_HOWTO (R_IA64_PCREL21BI, "PCREL21BI", 0, true, true),
|
||
IA64_HOWTO (R_IA64_PCREL22, "PCREL22", 0, true, true),
|
||
IA64_HOWTO (R_IA64_PCREL64I, "PCREL64I", 0, true, true),
|
||
|
||
IA64_HOWTO (R_IA64_IPLTMSB, "IPLTMSB", 4, false, true),
|
||
IA64_HOWTO (R_IA64_IPLTLSB, "IPLTLSB", 4, false, true),
|
||
IA64_HOWTO (R_IA64_COPY, "COPY", 4, false, true),
|
||
IA64_HOWTO (R_IA64_LTOFF22X, "LTOFF22X", 0, false, true),
|
||
IA64_HOWTO (R_IA64_LDXMOV, "LDXMOV", 0, false, true),
|
||
|
||
IA64_HOWTO (R_IA64_TPREL14, "TPREL14", 0, false, false),
|
||
IA64_HOWTO (R_IA64_TPREL22, "TPREL22", 0, false, false),
|
||
IA64_HOWTO (R_IA64_TPREL64I, "TPREL64I", 0, false, false),
|
||
IA64_HOWTO (R_IA64_TPREL64MSB, "TPREL64MSB", 8, false, false),
|
||
IA64_HOWTO (R_IA64_TPREL64LSB, "TPREL64LSB", 8, false, false),
|
||
IA64_HOWTO (R_IA64_LTOFF_TPREL22, "LTOFF_TPREL22", 0, false, false),
|
||
|
||
IA64_HOWTO (R_IA64_DTPMOD64MSB, "TPREL64MSB", 8, false, false),
|
||
IA64_HOWTO (R_IA64_DTPMOD64LSB, "TPREL64LSB", 8, false, false),
|
||
IA64_HOWTO (R_IA64_LTOFF_DTPMOD22, "LTOFF_DTPMOD22", 0, false, false),
|
||
|
||
IA64_HOWTO (R_IA64_DTPREL14, "DTPREL14", 0, false, false),
|
||
IA64_HOWTO (R_IA64_DTPREL22, "DTPREL22", 0, false, false),
|
||
IA64_HOWTO (R_IA64_DTPREL64I, "DTPREL64I", 0, false, false),
|
||
IA64_HOWTO (R_IA64_DTPREL32MSB, "DTPREL32MSB", 4, false, false),
|
||
IA64_HOWTO (R_IA64_DTPREL32LSB, "DTPREL32LSB", 4, false, false),
|
||
IA64_HOWTO (R_IA64_DTPREL64MSB, "DTPREL64MSB", 8, false, false),
|
||
IA64_HOWTO (R_IA64_DTPREL64LSB, "DTPREL64LSB", 8, false, false),
|
||
IA64_HOWTO (R_IA64_LTOFF_DTPREL22, "LTOFF_DTPREL22", 0, false, false),
|
||
};
|
||
|
||
static unsigned char elf_code_to_howto_index[R_IA64_MAX_RELOC_CODE + 1];
|
||
|
||
/* Given a BFD reloc type, return the matching HOWTO structure. */
|
||
|
||
static reloc_howto_type *
|
||
lookup_howto (rtype)
|
||
unsigned int rtype;
|
||
{
|
||
static int inited = 0;
|
||
int i;
|
||
|
||
if (!inited)
|
||
{
|
||
inited = 1;
|
||
|
||
memset (elf_code_to_howto_index, 0xff, sizeof (elf_code_to_howto_index));
|
||
for (i = 0; i < NELEMS (ia64_howto_table); ++i)
|
||
elf_code_to_howto_index[ia64_howto_table[i].type] = i;
|
||
}
|
||
|
||
BFD_ASSERT (rtype <= R_IA64_MAX_RELOC_CODE);
|
||
i = elf_code_to_howto_index[rtype];
|
||
if (i >= NELEMS (ia64_howto_table))
|
||
return 0;
|
||
return ia64_howto_table + i;
|
||
}
|
||
|
||
static reloc_howto_type*
|
||
elfNN_ia64_reloc_type_lookup (abfd, bfd_code)
|
||
bfd *abfd ATTRIBUTE_UNUSED;
|
||
bfd_reloc_code_real_type bfd_code;
|
||
{
|
||
unsigned int rtype;
|
||
|
||
switch (bfd_code)
|
||
{
|
||
case BFD_RELOC_NONE: rtype = R_IA64_NONE; break;
|
||
|
||
case BFD_RELOC_IA64_IMM14: rtype = R_IA64_IMM14; break;
|
||
case BFD_RELOC_IA64_IMM22: rtype = R_IA64_IMM22; break;
|
||
case BFD_RELOC_IA64_IMM64: rtype = R_IA64_IMM64; break;
|
||
|
||
case BFD_RELOC_IA64_DIR32MSB: rtype = R_IA64_DIR32MSB; break;
|
||
case BFD_RELOC_IA64_DIR32LSB: rtype = R_IA64_DIR32LSB; break;
|
||
case BFD_RELOC_IA64_DIR64MSB: rtype = R_IA64_DIR64MSB; break;
|
||
case BFD_RELOC_IA64_DIR64LSB: rtype = R_IA64_DIR64LSB; break;
|
||
|
||
case BFD_RELOC_IA64_GPREL22: rtype = R_IA64_GPREL22; break;
|
||
case BFD_RELOC_IA64_GPREL64I: rtype = R_IA64_GPREL64I; break;
|
||
case BFD_RELOC_IA64_GPREL32MSB: rtype = R_IA64_GPREL32MSB; break;
|
||
case BFD_RELOC_IA64_GPREL32LSB: rtype = R_IA64_GPREL32LSB; break;
|
||
case BFD_RELOC_IA64_GPREL64MSB: rtype = R_IA64_GPREL64MSB; break;
|
||
case BFD_RELOC_IA64_GPREL64LSB: rtype = R_IA64_GPREL64LSB; break;
|
||
|
||
case BFD_RELOC_IA64_LTOFF22: rtype = R_IA64_LTOFF22; break;
|
||
case BFD_RELOC_IA64_LTOFF64I: rtype = R_IA64_LTOFF64I; break;
|
||
|
||
case BFD_RELOC_IA64_PLTOFF22: rtype = R_IA64_PLTOFF22; break;
|
||
case BFD_RELOC_IA64_PLTOFF64I: rtype = R_IA64_PLTOFF64I; break;
|
||
case BFD_RELOC_IA64_PLTOFF64MSB: rtype = R_IA64_PLTOFF64MSB; break;
|
||
case BFD_RELOC_IA64_PLTOFF64LSB: rtype = R_IA64_PLTOFF64LSB; break;
|
||
case BFD_RELOC_IA64_FPTR64I: rtype = R_IA64_FPTR64I; break;
|
||
case BFD_RELOC_IA64_FPTR32MSB: rtype = R_IA64_FPTR32MSB; break;
|
||
case BFD_RELOC_IA64_FPTR32LSB: rtype = R_IA64_FPTR32LSB; break;
|
||
case BFD_RELOC_IA64_FPTR64MSB: rtype = R_IA64_FPTR64MSB; break;
|
||
case BFD_RELOC_IA64_FPTR64LSB: rtype = R_IA64_FPTR64LSB; break;
|
||
|
||
case BFD_RELOC_IA64_PCREL21B: rtype = R_IA64_PCREL21B; break;
|
||
case BFD_RELOC_IA64_PCREL21BI: rtype = R_IA64_PCREL21BI; break;
|
||
case BFD_RELOC_IA64_PCREL21M: rtype = R_IA64_PCREL21M; break;
|
||
case BFD_RELOC_IA64_PCREL21F: rtype = R_IA64_PCREL21F; break;
|
||
case BFD_RELOC_IA64_PCREL22: rtype = R_IA64_PCREL22; break;
|
||
case BFD_RELOC_IA64_PCREL60B: rtype = R_IA64_PCREL60B; break;
|
||
case BFD_RELOC_IA64_PCREL64I: rtype = R_IA64_PCREL64I; break;
|
||
case BFD_RELOC_IA64_PCREL32MSB: rtype = R_IA64_PCREL32MSB; break;
|
||
case BFD_RELOC_IA64_PCREL32LSB: rtype = R_IA64_PCREL32LSB; break;
|
||
case BFD_RELOC_IA64_PCREL64MSB: rtype = R_IA64_PCREL64MSB; break;
|
||
case BFD_RELOC_IA64_PCREL64LSB: rtype = R_IA64_PCREL64LSB; break;
|
||
|
||
case BFD_RELOC_IA64_LTOFF_FPTR22: rtype = R_IA64_LTOFF_FPTR22; break;
|
||
case BFD_RELOC_IA64_LTOFF_FPTR64I: rtype = R_IA64_LTOFF_FPTR64I; break;
|
||
case BFD_RELOC_IA64_LTOFF_FPTR32MSB: rtype = R_IA64_LTOFF_FPTR32MSB; break;
|
||
case BFD_RELOC_IA64_LTOFF_FPTR32LSB: rtype = R_IA64_LTOFF_FPTR32LSB; break;
|
||
case BFD_RELOC_IA64_LTOFF_FPTR64MSB: rtype = R_IA64_LTOFF_FPTR64MSB; break;
|
||
case BFD_RELOC_IA64_LTOFF_FPTR64LSB: rtype = R_IA64_LTOFF_FPTR64LSB; break;
|
||
|
||
case BFD_RELOC_IA64_SEGREL32MSB: rtype = R_IA64_SEGREL32MSB; break;
|
||
case BFD_RELOC_IA64_SEGREL32LSB: rtype = R_IA64_SEGREL32LSB; break;
|
||
case BFD_RELOC_IA64_SEGREL64MSB: rtype = R_IA64_SEGREL64MSB; break;
|
||
case BFD_RELOC_IA64_SEGREL64LSB: rtype = R_IA64_SEGREL64LSB; break;
|
||
|
||
case BFD_RELOC_IA64_SECREL32MSB: rtype = R_IA64_SECREL32MSB; break;
|
||
case BFD_RELOC_IA64_SECREL32LSB: rtype = R_IA64_SECREL32LSB; break;
|
||
case BFD_RELOC_IA64_SECREL64MSB: rtype = R_IA64_SECREL64MSB; break;
|
||
case BFD_RELOC_IA64_SECREL64LSB: rtype = R_IA64_SECREL64LSB; break;
|
||
|
||
case BFD_RELOC_IA64_REL32MSB: rtype = R_IA64_REL32MSB; break;
|
||
case BFD_RELOC_IA64_REL32LSB: rtype = R_IA64_REL32LSB; break;
|
||
case BFD_RELOC_IA64_REL64MSB: rtype = R_IA64_REL64MSB; break;
|
||
case BFD_RELOC_IA64_REL64LSB: rtype = R_IA64_REL64LSB; break;
|
||
|
||
case BFD_RELOC_IA64_LTV32MSB: rtype = R_IA64_LTV32MSB; break;
|
||
case BFD_RELOC_IA64_LTV32LSB: rtype = R_IA64_LTV32LSB; break;
|
||
case BFD_RELOC_IA64_LTV64MSB: rtype = R_IA64_LTV64MSB; break;
|
||
case BFD_RELOC_IA64_LTV64LSB: rtype = R_IA64_LTV64LSB; break;
|
||
|
||
case BFD_RELOC_IA64_IPLTMSB: rtype = R_IA64_IPLTMSB; break;
|
||
case BFD_RELOC_IA64_IPLTLSB: rtype = R_IA64_IPLTLSB; break;
|
||
case BFD_RELOC_IA64_COPY: rtype = R_IA64_COPY; break;
|
||
case BFD_RELOC_IA64_LTOFF22X: rtype = R_IA64_LTOFF22X; break;
|
||
case BFD_RELOC_IA64_LDXMOV: rtype = R_IA64_LDXMOV; break;
|
||
|
||
case BFD_RELOC_IA64_TPREL14: rtype = R_IA64_TPREL14; break;
|
||
case BFD_RELOC_IA64_TPREL22: rtype = R_IA64_TPREL22; break;
|
||
case BFD_RELOC_IA64_TPREL64I: rtype = R_IA64_TPREL64I; break;
|
||
case BFD_RELOC_IA64_TPREL64MSB: rtype = R_IA64_TPREL64MSB; break;
|
||
case BFD_RELOC_IA64_TPREL64LSB: rtype = R_IA64_TPREL64LSB; break;
|
||
case BFD_RELOC_IA64_LTOFF_TPREL22: rtype = R_IA64_LTOFF_TPREL22; break;
|
||
|
||
case BFD_RELOC_IA64_DTPMOD64MSB: rtype = R_IA64_DTPMOD64MSB; break;
|
||
case BFD_RELOC_IA64_DTPMOD64LSB: rtype = R_IA64_DTPMOD64LSB; break;
|
||
case BFD_RELOC_IA64_LTOFF_DTPMOD22: rtype = R_IA64_LTOFF_DTPMOD22; break;
|
||
|
||
case BFD_RELOC_IA64_DTPREL14: rtype = R_IA64_DTPREL14; break;
|
||
case BFD_RELOC_IA64_DTPREL22: rtype = R_IA64_DTPREL22; break;
|
||
case BFD_RELOC_IA64_DTPREL64I: rtype = R_IA64_DTPREL64I; break;
|
||
case BFD_RELOC_IA64_DTPREL32MSB: rtype = R_IA64_DTPREL32MSB; break;
|
||
case BFD_RELOC_IA64_DTPREL32LSB: rtype = R_IA64_DTPREL32LSB; break;
|
||
case BFD_RELOC_IA64_DTPREL64MSB: rtype = R_IA64_DTPREL64MSB; break;
|
||
case BFD_RELOC_IA64_DTPREL64LSB: rtype = R_IA64_DTPREL64LSB; break;
|
||
case BFD_RELOC_IA64_LTOFF_DTPREL22: rtype = R_IA64_LTOFF_DTPREL22; break;
|
||
|
||
default: return 0;
|
||
}
|
||
return lookup_howto (rtype);
|
||
}
|
||
|
||
/* Given a ELF reloc, return the matching HOWTO structure. */
|
||
|
||
static void
|
||
elfNN_ia64_info_to_howto (abfd, bfd_reloc, elf_reloc)
|
||
bfd *abfd ATTRIBUTE_UNUSED;
|
||
arelent *bfd_reloc;
|
||
ElfNN_Internal_Rela *elf_reloc;
|
||
{
|
||
bfd_reloc->howto
|
||
= 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, 0x30, 0x28, 0xc0, /* ld8 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"
|
||
#define AIX_DYNAMIC_INTERPRETER "/usr/lib/ia64l64/libc.so.1"
|
||
#define DYNAMIC_INTERPRETER(abfd) \
|
||
(elfNN_ia64_aix_vec (abfd->xvec) ? AIX_DYNAMIC_INTERPRETER : ELF_DYNAMIC_INTERPRETER)
|
||
|
||
/* Select out of range branch fixup type. Note that Itanium does
|
||
not support brl, and so it gets emulated by the kernel. */
|
||
#undef USE_BRL
|
||
|
||
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;; */
|
||
};
|
||
|
||
/* These functions do relaxation for IA-64 ELF.
|
||
|
||
This is primarily to support branches to targets out of range;
|
||
relaxation of R_IA64_LTOFF22X and R_IA64_LDXMOV not yet supported. */
|
||
|
||
static boolean
|
||
elfNN_ia64_relax_section (abfd, sec, link_info, again)
|
||
bfd *abfd;
|
||
asection *sec;
|
||
struct bfd_link_info *link_info;
|
||
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;
|
||
boolean changed_contents = false;
|
||
boolean changed_relocs = false;
|
||
|
||
/* Assume we're not going to change any sizes, and we'll only need
|
||
one pass. */
|
||
*again = false;
|
||
|
||
/* Nothing to do if there are no relocations. */
|
||
if ((sec->flags & SEC_RELOC) == 0
|
||
|| sec->reloc_count == 0)
|
||
return true;
|
||
|
||
/* If this is the first time we have been called for this section,
|
||
initialize the cooked size. */
|
||
if (sec->_cooked_size == 0)
|
||
sec->_cooked_size = sec->_raw_size;
|
||
|
||
symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
|
||
|
||
/* Load the relocations for this section. */
|
||
internal_relocs = (_bfd_elfNN_link_read_relocs
|
||
(abfd, sec, (PTR) NULL, (Elf_Internal_Rela *) NULL,
|
||
link_info->keep_memory));
|
||
if (internal_relocs == NULL)
|
||
return false;
|
||
|
||
ia64_info = elfNN_ia64_hash_table (link_info);
|
||
irelend = internal_relocs + sec->reloc_count;
|
||
|
||
for (irel = internal_relocs; irel < irelend; irel++)
|
||
if (ELFNN_R_TYPE (irel->r_info) == (int) R_IA64_PCREL21B
|
||
|| ELFNN_R_TYPE (irel->r_info) == (int) R_IA64_PCREL21M
|
||
|| ELFNN_R_TYPE (irel->r_info) == (int) R_IA64_PCREL21F)
|
||
break;
|
||
|
||
/* No branch-type relocations. */
|
||
if (irel == irelend)
|
||
{
|
||
if (elf_section_data (sec)->relocs != internal_relocs)
|
||
free (internal_relocs);
|
||
return true;
|
||
}
|
||
|
||
/* Get the section contents. */
|
||
if (elf_section_data (sec)->this_hdr.contents != NULL)
|
||
contents = elf_section_data (sec)->this_hdr.contents;
|
||
else
|
||
{
|
||
contents = (bfd_byte *) bfd_malloc (sec->_raw_size);
|
||
if (contents == NULL)
|
||
goto error_return;
|
||
|
||
if (! bfd_get_section_contents (abfd, sec, contents,
|
||
(file_ptr) 0, sec->_raw_size))
|
||
goto error_return;
|
||
}
|
||
|
||
for (; irel < irelend; irel++)
|
||
{
|
||
bfd_vma symaddr, reladdr, trampoff, toff, roff;
|
||
asection *tsec;
|
||
struct one_fixup *f;
|
||
bfd_size_type amt;
|
||
|
||
if (ELFNN_R_TYPE (irel->r_info) != (int) R_IA64_PCREL21B
|
||
&& ELFNN_R_TYPE (irel->r_info) != (int) R_IA64_PCREL21M
|
||
&& ELFNN_R_TYPE (irel->r_info) != (int) R_IA64_PCREL21F)
|
||
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 + ELF64_R_SYM (irel->r_info);
|
||
if (isym->st_shndx == SHN_UNDEF)
|
||
continue; /* We can't do anthing 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;
|
||
}
|
||
else
|
||
{
|
||
unsigned long indx;
|
||
struct elf_link_hash_entry *h;
|
||
struct elfNN_ia64_dyn_sym_info *dyn_i;
|
||
|
||
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 (dyn_i && dyn_i->want_plt2)
|
||
{
|
||
tsec = ia64_info->plt_sec;
|
||
toff = dyn_i->plt2_offset;
|
||
}
|
||
else
|
||
{
|
||
/* We can't do anthing 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;
|
||
}
|
||
}
|
||
|
||
symaddr = (tsec->output_section->vma
|
||
+ tsec->output_offset
|
||
+ toff
|
||
+ irel->r_addend);
|
||
|
||
roff = irel->r_offset;
|
||
reladdr = (sec->output_section->vma
|
||
+ sec->output_offset
|
||
+ roff) & (bfd_vma) -4;
|
||
|
||
/* If the branch is in range, no need to do anything. */
|
||
if ((bfd_signed_vma) (symaddr - reladdr) >= -0x1000000
|
||
&& (bfd_signed_vma) (symaddr - reladdr) <= 0x0FFFFF0)
|
||
continue;
|
||
|
||
/* If the branch and target are in the same section, you've
|
||
got one honking big section and we can't help you. You'll
|
||
get an error message later. */
|
||
if (tsec == sec)
|
||
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->plt_sec)
|
||
size = sizeof (plt_full_entry);
|
||
else
|
||
{
|
||
#ifdef USE_BRL
|
||
size = sizeof (oor_brl);
|
||
#else
|
||
size = sizeof (oor_ip);
|
||
#endif
|
||
}
|
||
|
||
/* Resize the current section to make room for the new branch. */
|
||
trampoff = (sec->_cooked_size + 15) & (bfd_vma) -16;
|
||
amt = trampoff + size;
|
||
contents = (bfd_byte *) bfd_realloc (contents, amt);
|
||
if (contents == NULL)
|
||
goto error_return;
|
||
sec->_cooked_size = amt;
|
||
|
||
if (tsec == ia64_info->plt_sec)
|
||
{
|
||
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
|
||
{
|
||
#ifdef USE_BRL
|
||
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;
|
||
#else
|
||
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;
|
||
#endif
|
||
}
|
||
|
||
/* 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
|
||
{
|
||
/* 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. Hope like
|
||
hell this doesn't overflow too. */
|
||
if (elfNN_ia64_install_value (abfd, contents + roff,
|
||
f->trampoff - (roff & (bfd_vma) -4),
|
||
R_IA64_PCREL21B) != bfd_reloc_ok)
|
||
goto error_return;
|
||
|
||
changed_contents = true;
|
||
changed_relocs = true;
|
||
}
|
||
|
||
/* 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;
|
||
}
|
||
|
||
*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;
|
||
}
|
||
|
||
/* Return true if NAME is an unwind table section name. */
|
||
|
||
static inline boolean
|
||
is_unwind_section_name (abfd, name)
|
||
bfd *abfd;
|
||
const char *name;
|
||
{
|
||
size_t len1, len2, len3;
|
||
|
||
if (elfNN_ia64_hpux_vec (abfd->xvec)
|
||
&& !strcmp (name, ELF_STRING_ia64_unwind_hdr))
|
||
return false;
|
||
|
||
len1 = sizeof (ELF_STRING_ia64_unwind) - 1;
|
||
len2 = sizeof (ELF_STRING_ia64_unwind_info) - 1;
|
||
len3 = sizeof (ELF_STRING_ia64_unwind_once) - 1;
|
||
return ((strncmp (name, ELF_STRING_ia64_unwind, len1) == 0
|
||
&& strncmp (name, ELF_STRING_ia64_unwind_info, len2) != 0)
|
||
|| strncmp (name, ELF_STRING_ia64_unwind_once, len3) == 0);
|
||
}
|
||
|
||
/* Handle an IA-64 specific section when reading an object file. This
|
||
is called when elfcode.h finds a section with an unknown type. */
|
||
|
||
static boolean
|
||
elfNN_ia64_section_from_shdr (abfd, hdr, name)
|
||
bfd *abfd;
|
||
ElfNN_Internal_Shdr *hdr;
|
||
const char *name;
|
||
{
|
||
asection *newsect;
|
||
|
||
/* 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))
|
||
return false;
|
||
newsect = hdr->bfd_section;
|
||
|
||
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 boolean
|
||
elfNN_ia64_section_flags (flags, hdr)
|
||
flagword *flags;
|
||
ElfNN_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 boolean
|
||
elfNN_ia64_fake_sections (abfd, hdr, sec)
|
||
bfd *abfd ATTRIBUTE_UNUSED;
|
||
ElfNN_Internal_Shdr *hdr;
|
||
asection *sec;
|
||
{
|
||
register 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;
|
||
|
||
return true;
|
||
}
|
||
|
||
/* The final processing done just before writing out an IA-64 ELF
|
||
object file. */
|
||
|
||
static void
|
||
elfNN_ia64_final_write_processing (abfd, linker)
|
||
bfd *abfd;
|
||
boolean linker ATTRIBUTE_UNUSED;
|
||
{
|
||
Elf_Internal_Shdr *hdr;
|
||
const char *sname;
|
||
asection *text_sect, *s;
|
||
size_t len;
|
||
|
||
for (s = abfd->sections; s; s = s->next)
|
||
{
|
||
hdr = &elf_section_data (s)->this_hdr;
|
||
switch (hdr->sh_type)
|
||
{
|
||
case SHT_IA_64_UNWIND:
|
||
/* See comments in gas/config/tc-ia64.c:dot_endp on why we
|
||
have to do this. */
|
||
sname = bfd_get_section_name (abfd, s);
|
||
len = sizeof (ELF_STRING_ia64_unwind) - 1;
|
||
if (sname && strncmp (sname, ELF_STRING_ia64_unwind, len) == 0)
|
||
{
|
||
sname += len;
|
||
|
||
if (sname[0] == '\0')
|
||
/* .IA_64.unwind -> .text */
|
||
text_sect = bfd_get_section_by_name (abfd, ".text");
|
||
else
|
||
/* .IA_64.unwindFOO -> FOO */
|
||
text_sect = bfd_get_section_by_name (abfd, sname);
|
||
}
|
||
else if (sname
|
||
&& (len = sizeof (ELF_STRING_ia64_unwind_once) - 1,
|
||
strncmp (sname, ELF_STRING_ia64_unwind_once, len)) == 0)
|
||
{
|
||
/* .gnu.linkonce.ia64unw.FOO -> .gnu.linkonce.t.FOO */
|
||
size_t len2 = sizeof (".gnu.linkonce.t.") - 1;
|
||
char *once_name = bfd_malloc (len2 + strlen (sname + len) + 1);
|
||
|
||
if (once_name != NULL)
|
||
{
|
||
memcpy (once_name, ".gnu.linkonce.t.", len2);
|
||
strcpy (once_name + len2, sname + len);
|
||
text_sect = bfd_get_section_by_name (abfd, once_name);
|
||
free (once_name);
|
||
}
|
||
else
|
||
/* Should only happen if we run out of memory, in
|
||
which case we're probably toast anyway. Try to
|
||
cope by finding the section the slow way. */
|
||
for (text_sect = abfd->sections;
|
||
text_sect != NULL;
|
||
text_sect = text_sect->next)
|
||
{
|
||
if (strncmp (bfd_section_name (abfd, text_sect),
|
||
".gnu.linkonce.t.", len2) == 0
|
||
&& strcmp (bfd_section_name (abfd, text_sect) + len2,
|
||
sname + len) == 0)
|
||
break;
|
||
}
|
||
}
|
||
else
|
||
/* last resort: fall back on .text */
|
||
text_sect = bfd_get_section_by_name (abfd, ".text");
|
||
|
||
if (text_sect)
|
||
{
|
||
/* 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_link = elf_section_data (text_sect)->this_idx;
|
||
hdr->sh_info = elf_section_data (text_sect)->this_idx;
|
||
}
|
||
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 boolean
|
||
elfNN_ia64_add_symbol_hook (abfd, info, sym, namep, flagsp, secp, valp)
|
||
bfd *abfd;
|
||
struct bfd_link_info *info;
|
||
const Elf_Internal_Sym *sym;
|
||
const char **namep ATTRIBUTE_UNUSED;
|
||
flagword *flagsp ATTRIBUTE_UNUSED;
|
||
asection **secp;
|
||
bfd_vma *valp;
|
||
{
|
||
if (sym->st_shndx == SHN_COMMON
|
||
&& !info->relocateable
|
||
&& 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 (abfd, ".scommon");
|
||
if (scomm == NULL
|
||
|| !bfd_set_section_flags (abfd, scomm, (SEC_ALLOC
|
||
| SEC_IS_COMMON
|
||
| SEC_LINKER_CREATED)))
|
||
return false;
|
||
}
|
||
|
||
*secp = scomm;
|
||
*valp = sym->st_size;
|
||
}
|
||
|
||
return true;
|
||
}
|
||
|
||
static boolean
|
||
elfNN_ia64_aix_vec (const bfd_target *vec)
|
||
{
|
||
extern const bfd_target bfd_elfNN_ia64_aix_little_vec;
|
||
extern const bfd_target bfd_elfNN_ia64_aix_big_vec;
|
||
|
||
return (/**/vec == & bfd_elfNN_ia64_aix_little_vec
|
||
|| vec == & bfd_elfNN_ia64_aix_big_vec);
|
||
}
|
||
|
||
/* Hook called by the linker routine which adds symbols from an object
|
||
file. We use it to handle OS-specific symbols. */
|
||
|
||
static boolean
|
||
elfNN_ia64_aix_add_symbol_hook (abfd, info, sym, namep, flagsp, secp, valp)
|
||
bfd *abfd;
|
||
struct bfd_link_info *info;
|
||
const Elf_Internal_Sym *sym;
|
||
const char **namep;
|
||
flagword *flagsp;
|
||
asection **secp;
|
||
bfd_vma *valp;
|
||
{
|
||
if (strcmp (*namep, "__GLOB_DATA_PTR") == 0)
|
||
{
|
||
/* Define __GLOB_DATA_PTR when it is encountered. This is expected to
|
||
be a linker-defined symbol by the Aix C runtime startup code. IBM sez
|
||
no one else should use it b/c it is undocumented. */
|
||
struct elf_link_hash_entry *h;
|
||
|
||
h = elf_link_hash_lookup (elf_hash_table (info), *namep,
|
||
false, false, false);
|
||
if (h == NULL)
|
||
{
|
||
struct elf_backend_data *bed;
|
||
struct elfNN_ia64_link_hash_table *ia64_info;
|
||
|
||
bed = get_elf_backend_data (abfd);
|
||
ia64_info = elfNN_ia64_hash_table (info);
|
||
|
||
if (!(_bfd_generic_link_add_one_symbol
|
||
(info, abfd, *namep, BSF_GLOBAL,
|
||
bfd_get_section_by_name (abfd, ".bss"),
|
||
bed->got_symbol_offset, (const char *) NULL, false,
|
||
bed->collect, (struct bfd_link_hash_entry **) &h)))
|
||
return false;
|
||
|
||
h->elf_link_hash_flags |= ELF_LINK_HASH_DEF_REGULAR;
|
||
h->type = STT_OBJECT;
|
||
|
||
if (! _bfd_elf_link_record_dynamic_symbol (info, h))
|
||
return false;
|
||
}
|
||
|
||
return true;
|
||
}
|
||
else if (sym->st_shndx == SHN_LOOS)
|
||
{
|
||
unsigned int i;
|
||
|
||
/* SHN_AIX_SYSCALL: Treat this as any other symbol. The special symbol
|
||
is only relevant when compiling code for extended system calls.
|
||
Replace the "special" section with .text, if possible.
|
||
Note that these symbols are always assumed to be in .text. */
|
||
for (i = 1; i < elf_numsections (abfd); i++)
|
||
{
|
||
asection * sec = bfd_section_from_elf_index (abfd, i);
|
||
|
||
if (sec && strcmp (sec->name, ".text") == 0)
|
||
{
|
||
*secp = sec;
|
||
break;
|
||
}
|
||
}
|
||
|
||
if (*secp == NULL)
|
||
*secp = bfd_abs_section_ptr;
|
||
|
||
*valp = sym->st_size;
|
||
|
||
return true;
|
||
}
|
||
else
|
||
{
|
||
return elfNN_ia64_add_symbol_hook (abfd, info, sym,
|
||
namep, flagsp, secp, valp);
|
||
}
|
||
}
|
||
|
||
boolean
|
||
elfNN_ia64_aix_link_add_symbols (abfd, info)
|
||
bfd *abfd;
|
||
struct bfd_link_info *info;
|
||
{
|
||
/* Make sure dynamic sections are always created. */
|
||
if (! elf_hash_table (info)->dynamic_sections_created
|
||
&& abfd->xvec == info->hash->creator)
|
||
{
|
||
if (! bfd_elfNN_link_create_dynamic_sections (abfd, info))
|
||
return false;
|
||
}
|
||
|
||
/* Now do the standard call. */
|
||
return bfd_elfNN_bfd_link_add_symbols (abfd, info);
|
||
}
|
||
|
||
/* Return the number of additional phdrs we will need. */
|
||
|
||
static int
|
||
elfNN_ia64_additional_program_headers (abfd)
|
||
bfd *abfd;
|
||
{
|
||
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 boolean
|
||
elfNN_ia64_modify_segment_map (abfd)
|
||
bfd *abfd;
|
||
{
|
||
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_tdata (abfd)->segment_map; 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_tdata (abfd)->segment_map;
|
||
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_tdata (abfd)->segment_map; 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_tdata (abfd)->segment_map;
|
||
while (*pm != NULL)
|
||
pm = &(*pm)->next;
|
||
*pm = m;
|
||
}
|
||
}
|
||
}
|
||
|
||
/* 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. */
|
||
for (m = elf_tdata (abfd)->segment_map; m != NULL; m = m->next)
|
||
if (m->p_type == PT_LOAD)
|
||
{
|
||
int i;
|
||
for (i = m->count - 1; i >= 0; --i)
|
||
{
|
||
struct bfd_link_order *order = m->sections[i]->link_order_head;
|
||
while (order)
|
||
{
|
||
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)
|
||
{
|
||
m->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 boolean
|
||
elfNN_ia64_is_local_label_name (abfd, name)
|
||
bfd *abfd ATTRIBUTE_UNUSED;
|
||
const char *name;
|
||
{
|
||
return name[0] == '.';
|
||
}
|
||
|
||
/* Should we do dynamic things to this symbol? */
|
||
|
||
static boolean
|
||
elfNN_ia64_dynamic_symbol_p (h, info)
|
||
struct elf_link_hash_entry *h;
|
||
struct bfd_link_info *info;
|
||
{
|
||
if (h == NULL)
|
||
return false;
|
||
|
||
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 (h->dynindx == -1)
|
||
return false;
|
||
switch (ELF_ST_VISIBILITY (h->other))
|
||
{
|
||
case STV_INTERNAL:
|
||
case STV_HIDDEN:
|
||
return false;
|
||
default:
|
||
break;
|
||
}
|
||
|
||
if (h->root.type == bfd_link_hash_undefweak
|
||
|| h->root.type == bfd_link_hash_defweak)
|
||
return true;
|
||
|
||
if ((info->shared && (!info->symbolic || info->allow_shlib_undefined))
|
||
|| ((h->elf_link_hash_flags
|
||
& (ELF_LINK_HASH_DEF_DYNAMIC | ELF_LINK_HASH_REF_REGULAR))
|
||
== (ELF_LINK_HASH_DEF_DYNAMIC | ELF_LINK_HASH_REF_REGULAR)))
|
||
return true;
|
||
|
||
return false;
|
||
}
|
||
|
||
static boolean
|
||
elfNN_ia64_local_hash_table_init (ht, abfd, new)
|
||
struct elfNN_ia64_local_hash_table *ht;
|
||
bfd *abfd ATTRIBUTE_UNUSED;
|
||
new_hash_entry_func new;
|
||
{
|
||
memset (ht, 0, sizeof (*ht));
|
||
return bfd_hash_table_init (&ht->root, new);
|
||
}
|
||
|
||
static struct bfd_hash_entry*
|
||
elfNN_ia64_new_loc_hash_entry (entry, table, string)
|
||
struct bfd_hash_entry *entry;
|
||
struct bfd_hash_table *table;
|
||
const char *string;
|
||
{
|
||
struct elfNN_ia64_local_hash_entry *ret;
|
||
ret = (struct elfNN_ia64_local_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;
|
||
|
||
/* Initialize our local data. All zeros, and definitely easier
|
||
than setting a handful of bit fields. */
|
||
memset (ret, 0, sizeof (*ret));
|
||
|
||
/* Call the allocation method of the superclass. */
|
||
ret = ((struct elfNN_ia64_local_hash_entry *)
|
||
bfd_hash_newfunc ((struct bfd_hash_entry *) ret, table, string));
|
||
|
||
return (struct bfd_hash_entry *) ret;
|
||
}
|
||
|
||
static struct bfd_hash_entry*
|
||
elfNN_ia64_new_elf_hash_entry (entry, table, string)
|
||
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;
|
||
|
||
/* Initialize our local data. All zeros, and definitely easier
|
||
than setting a handful of bit fields. */
|
||
memset (ret, 0, sizeof (*ret));
|
||
|
||
/* 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));
|
||
|
||
return (struct bfd_hash_entry *) ret;
|
||
}
|
||
|
||
static void
|
||
elfNN_ia64_hash_copy_indirect (bed, xdir, xind)
|
||
struct elf_backend_data *bed ATTRIBUTE_UNUSED;
|
||
struct elf_link_hash_entry *xdir, *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. */
|
||
|
||
dir->root.elf_link_hash_flags |=
|
||
(ind->root.elf_link_hash_flags
|
||
& (ELF_LINK_HASH_REF_DYNAMIC
|
||
| ELF_LINK_HASH_REF_REGULAR
|
||
| ELF_LINK_HASH_REF_REGULAR_NONWEAK));
|
||
|
||
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 (dir->info == NULL)
|
||
{
|
||
struct elfNN_ia64_dyn_sym_info *dyn_i;
|
||
|
||
dir->info = dyn_i = ind->info;
|
||
ind->info = NULL;
|
||
|
||
/* Fix up the dyn_sym_info pointers to the global symbol. */
|
||
for (; dyn_i; dyn_i = dyn_i->next)
|
||
dyn_i->h = &dir->root;
|
||
}
|
||
BFD_ASSERT (ind->info == NULL);
|
||
|
||
/* Copy over the dynindx. */
|
||
|
||
if (dir->root.dynindx == -1)
|
||
{
|
||
dir->root.dynindx = ind->root.dynindx;
|
||
dir->root.dynstr_index = ind->root.dynstr_index;
|
||
ind->root.dynindx = -1;
|
||
ind->root.dynstr_index = 0;
|
||
}
|
||
BFD_ASSERT (ind->root.dynindx == -1);
|
||
}
|
||
|
||
static void
|
||
elfNN_ia64_hash_hide_symbol (info, xh, force_local)
|
||
struct bfd_link_info *info;
|
||
struct elf_link_hash_entry *xh;
|
||
boolean force_local;
|
||
{
|
||
struct elfNN_ia64_link_hash_entry *h;
|
||
struct elfNN_ia64_dyn_sym_info *dyn_i;
|
||
|
||
h = (struct elfNN_ia64_link_hash_entry *)xh;
|
||
|
||
_bfd_elf_link_hash_hide_symbol (info, &h->root, force_local);
|
||
|
||
for (dyn_i = h->info; dyn_i; dyn_i = dyn_i->next)
|
||
dyn_i->want_plt2 = 0;
|
||
}
|
||
|
||
/* 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 (abfd)
|
||
bfd *abfd;
|
||
{
|
||
struct elfNN_ia64_link_hash_table *ret;
|
||
|
||
ret = bfd_zalloc (abfd, (bfd_size_type) sizeof (*ret));
|
||
if (!ret)
|
||
return 0;
|
||
if (!_bfd_elf_link_hash_table_init (&ret->root, abfd,
|
||
elfNN_ia64_new_elf_hash_entry))
|
||
{
|
||
bfd_release (abfd, ret);
|
||
return 0;
|
||
}
|
||
|
||
if (!elfNN_ia64_local_hash_table_init (&ret->loc_hash_table, abfd,
|
||
elfNN_ia64_new_loc_hash_entry))
|
||
return 0;
|
||
return &ret->root.root;
|
||
}
|
||
|
||
/* Look up an entry in a Alpha ELF linker hash table. */
|
||
|
||
static INLINE struct elfNN_ia64_local_hash_entry *
|
||
elfNN_ia64_local_hash_lookup(table, string, create, copy)
|
||
struct elfNN_ia64_local_hash_table *table;
|
||
const char *string;
|
||
boolean create, copy;
|
||
{
|
||
return ((struct elfNN_ia64_local_hash_entry *)
|
||
bfd_hash_lookup (&table->root, string, create, copy));
|
||
}
|
||
|
||
/* Traverse both local and global hash tables. */
|
||
|
||
struct elfNN_ia64_dyn_sym_traverse_data
|
||
{
|
||
boolean (*func) PARAMS ((struct elfNN_ia64_dyn_sym_info *, PTR));
|
||
PTR data;
|
||
};
|
||
|
||
static boolean
|
||
elfNN_ia64_global_dyn_sym_thunk (xentry, xdata)
|
||
struct bfd_hash_entry *xentry;
|
||
PTR 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;
|
||
|
||
if (entry->root.root.type == bfd_link_hash_warning)
|
||
entry = (struct elfNN_ia64_link_hash_entry *) entry->root.root.u.i.link;
|
||
|
||
for (dyn_i = entry->info; dyn_i; dyn_i = dyn_i->next)
|
||
if (! (*data->func) (dyn_i, data->data))
|
||
return false;
|
||
return true;
|
||
}
|
||
|
||
static boolean
|
||
elfNN_ia64_local_dyn_sym_thunk (xentry, xdata)
|
||
struct bfd_hash_entry *xentry;
|
||
PTR xdata;
|
||
{
|
||
struct elfNN_ia64_local_hash_entry *entry
|
||
= (struct elfNN_ia64_local_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;
|
||
|
||
for (dyn_i = entry->info; dyn_i; dyn_i = dyn_i->next)
|
||
if (! (*data->func) (dyn_i, data->data))
|
||
return false;
|
||
return true;
|
||
}
|
||
|
||
static void
|
||
elfNN_ia64_dyn_sym_traverse (ia64_info, func, data)
|
||
struct elfNN_ia64_link_hash_table *ia64_info;
|
||
boolean (*func) PARAMS ((struct elfNN_ia64_dyn_sym_info *, PTR));
|
||
PTR 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);
|
||
bfd_hash_traverse (&ia64_info->loc_hash_table.root,
|
||
elfNN_ia64_local_dyn_sym_thunk, &xdata);
|
||
}
|
||
|
||
static boolean
|
||
elfNN_ia64_create_dynamic_sections (abfd, info)
|
||
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);
|
||
|
||
ia64_info->plt_sec = bfd_get_section_by_name (abfd, ".plt");
|
||
ia64_info->got_sec = bfd_get_section_by_name (abfd, ".got");
|
||
|
||
{
|
||
flagword flags = bfd_get_section_flags (abfd, ia64_info->got_sec);
|
||
bfd_set_section_flags (abfd, ia64_info->got_sec, SEC_SMALL_DATA | flags);
|
||
}
|
||
|
||
if (!get_pltoff (abfd, info, ia64_info))
|
||
return false;
|
||
|
||
s = bfd_make_section(abfd, ".rela.IA_64.pltoff");
|
||
if (s == NULL
|
||
|| !bfd_set_section_flags (abfd, s, (SEC_ALLOC | SEC_LOAD
|
||
| SEC_HAS_CONTENTS
|
||
| SEC_IN_MEMORY
|
||
| SEC_LINKER_CREATED
|
||
| SEC_READONLY))
|
||
|| !bfd_set_section_alignment (abfd, s, 3))
|
||
return false;
|
||
ia64_info->rel_pltoff_sec = s;
|
||
|
||
s = bfd_make_section(abfd, ".rela.got");
|
||
if (s == NULL
|
||
|| !bfd_set_section_flags (abfd, s, (SEC_ALLOC | SEC_LOAD
|
||
| SEC_HAS_CONTENTS
|
||
| SEC_IN_MEMORY
|
||
| SEC_LINKER_CREATED
|
||
| SEC_READONLY))
|
||
|| !bfd_set_section_alignment (abfd, s, 3))
|
||
return false;
|
||
ia64_info->rel_got_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 (ia64_info, abfd, rel, create)
|
||
struct elfNN_ia64_link_hash_table *ia64_info;
|
||
bfd *abfd;
|
||
const Elf_Internal_Rela *rel;
|
||
boolean create;
|
||
{
|
||
char *addr_name;
|
||
size_t len;
|
||
struct elfNN_ia64_local_hash_entry *ret;
|
||
|
||
/* Construct a string for use in the elfNN_ia64_local_hash_table.
|
||
name describes what was once anonymous memory. */
|
||
|
||
len = sizeof (void*)*2 + 1 + sizeof (bfd_vma)*4 + 1 + 1;
|
||
len += 10; /* %p slop */
|
||
|
||
addr_name = bfd_malloc (len);
|
||
if (addr_name == NULL)
|
||
return 0;
|
||
sprintf (addr_name, "%p:%lx",
|
||
(void *) abfd, (unsigned long) ELFNN_R_SYM (rel->r_info));
|
||
|
||
/* Collect the canonical entry data for this address. */
|
||
ret = elfNN_ia64_local_hash_lookup (&ia64_info->loc_hash_table,
|
||
addr_name, create, create);
|
||
free (addr_name);
|
||
return ret;
|
||
}
|
||
|
||
/* 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. */
|
||
|
||
static struct elfNN_ia64_dyn_sym_info *
|
||
get_dyn_sym_info (ia64_info, h, abfd, rel, create)
|
||
struct elfNN_ia64_link_hash_table *ia64_info;
|
||
struct elf_link_hash_entry *h;
|
||
bfd *abfd;
|
||
const Elf_Internal_Rela *rel;
|
||
boolean create;
|
||
{
|
||
struct elfNN_ia64_dyn_sym_info **pp;
|
||
struct elfNN_ia64_dyn_sym_info *dyn_i;
|
||
bfd_vma addend = rel ? rel->r_addend : 0;
|
||
|
||
if (h)
|
||
pp = &((struct elfNN_ia64_link_hash_entry *)h)->info;
|
||
else
|
||
{
|
||
struct elfNN_ia64_local_hash_entry *loc_h;
|
||
|
||
loc_h = get_local_sym_hash (ia64_info, abfd, rel, create);
|
||
BFD_ASSERT (loc_h);
|
||
|
||
pp = &loc_h->info;
|
||
}
|
||
|
||
for (dyn_i = *pp; dyn_i && dyn_i->addend != addend; dyn_i = *pp)
|
||
pp = &dyn_i->next;
|
||
|
||
if (dyn_i == NULL && create)
|
||
{
|
||
dyn_i = ((struct elfNN_ia64_dyn_sym_info *)
|
||
bfd_zalloc (abfd, (bfd_size_type) sizeof *dyn_i));
|
||
*pp = dyn_i;
|
||
dyn_i->addend = addend;
|
||
}
|
||
|
||
return dyn_i;
|
||
}
|
||
|
||
static asection *
|
||
get_got (abfd, info, ia64_info)
|
||
bfd *abfd;
|
||
struct bfd_link_info *info;
|
||
struct elfNN_ia64_link_hash_table *ia64_info;
|
||
{
|
||
asection *got;
|
||
bfd *dynobj;
|
||
|
||
got = ia64_info->got_sec;
|
||
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 0;
|
||
|
||
got = bfd_get_section_by_name (dynobj, ".got");
|
||
BFD_ASSERT (got);
|
||
ia64_info->got_sec = got;
|
||
|
||
flags = bfd_get_section_flags (abfd, got);
|
||
bfd_set_section_flags (abfd, got, SEC_SMALL_DATA | flags);
|
||
}
|
||
|
||
return got;
|
||
}
|
||
|
||
/* Create function descriptor section (.opd). This section is called .opd
|
||
because it contains "official prodecure 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 (abfd, info, ia64_info)
|
||
bfd *abfd;
|
||
struct bfd_link_info *info ATTRIBUTE_UNUSED;
|
||
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 (dynobj, ".opd");
|
||
if (!fptr
|
||
|| !bfd_set_section_flags (dynobj, fptr,
|
||
(SEC_ALLOC
|
||
| SEC_LOAD
|
||
| SEC_HAS_CONTENTS
|
||
| SEC_IN_MEMORY
|
||
| SEC_READONLY
|
||
| SEC_LINKER_CREATED))
|
||
|| !bfd_set_section_alignment (abfd, fptr, 4))
|
||
{
|
||
BFD_ASSERT (0);
|
||
return NULL;
|
||
}
|
||
|
||
ia64_info->fptr_sec = fptr;
|
||
}
|
||
|
||
return fptr;
|
||
}
|
||
|
||
static asection *
|
||
get_pltoff (abfd, info, ia64_info)
|
||
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 (dynobj, ELF_STRING_ia64_pltoff);
|
||
if (!pltoff
|
||
|| !bfd_set_section_flags (dynobj, pltoff,
|
||
(SEC_ALLOC
|
||
| SEC_LOAD
|
||
| SEC_HAS_CONTENTS
|
||
| SEC_IN_MEMORY
|
||
| SEC_SMALL_DATA
|
||
| SEC_LINKER_CREATED))
|
||
|| !bfd_set_section_alignment (abfd, pltoff, 4))
|
||
{
|
||
BFD_ASSERT (0);
|
||
return NULL;
|
||
}
|
||
|
||
ia64_info->pltoff_sec = pltoff;
|
||
}
|
||
|
||
return pltoff;
|
||
}
|
||
|
||
static asection *
|
||
get_reloc_section (abfd, ia64_info, sec, create)
|
||
bfd *abfd;
|
||
struct elfNN_ia64_link_hash_table *ia64_info;
|
||
asection *sec;
|
||
boolean create;
|
||
{
|
||
const char *srel_name;
|
||
asection *srel;
|
||
bfd *dynobj;
|
||
|
||
srel_name = (bfd_elf_string_from_elf_section
|
||
(abfd, elf_elfheader(abfd)->e_shstrndx,
|
||
elf_section_data(sec)->rel_hdr.sh_name));
|
||
if (srel_name == NULL)
|
||
return NULL;
|
||
|
||
BFD_ASSERT ((strncmp (srel_name, ".rela", 5) == 0
|
||
&& strcmp (bfd_get_section_name (abfd, sec),
|
||
srel_name+5) == 0)
|
||
|| (strncmp (srel_name, ".rel", 4) == 0
|
||
&& strcmp (bfd_get_section_name (abfd, sec),
|
||
srel_name+4) == 0));
|
||
|
||
dynobj = ia64_info->root.dynobj;
|
||
if (!dynobj)
|
||
ia64_info->root.dynobj = dynobj = abfd;
|
||
|
||
srel = bfd_get_section_by_name (dynobj, srel_name);
|
||
if (srel == NULL && create)
|
||
{
|
||
srel = bfd_make_section (dynobj, srel_name);
|
||
if (srel == NULL
|
||
|| !bfd_set_section_flags (dynobj, srel,
|
||
(SEC_ALLOC
|
||
| SEC_LOAD
|
||
| SEC_HAS_CONTENTS
|
||
| SEC_IN_MEMORY
|
||
| SEC_LINKER_CREATED
|
||
| SEC_READONLY))
|
||
|| !bfd_set_section_alignment (dynobj, srel, 3))
|
||
return NULL;
|
||
}
|
||
|
||
if (sec->flags & SEC_READONLY)
|
||
ia64_info->reltext = 1;
|
||
|
||
return srel;
|
||
}
|
||
|
||
static boolean
|
||
count_dyn_reloc (abfd, dyn_i, srel, type)
|
||
bfd *abfd;
|
||
struct elfNN_ia64_dyn_sym_info *dyn_i;
|
||
asection *srel;
|
||
int type;
|
||
{
|
||
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->count++;
|
||
|
||
return true;
|
||
}
|
||
|
||
static boolean
|
||
elfNN_ia64_check_relocs (abfd, info, sec, 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;
|
||
|
||
if (info->relocateable)
|
||
return true;
|
||
|
||
symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
|
||
ia64_info = elfNN_ia64_hash_table (info);
|
||
|
||
got = fptr = srel = NULL;
|
||
|
||
relend = relocs + sec->reloc_count;
|
||
for (rel = relocs; rel < relend; ++rel)
|
||
{
|
||
enum {
|
||
NEED_GOT = 1,
|
||
NEED_FPTR = 2,
|
||
NEED_PLTOFF = 4,
|
||
NEED_MIN_PLT = 8,
|
||
NEED_FULL_PLT = 16,
|
||
NEED_DYNREL = 32,
|
||
NEED_LTOFF_FPTR = 64,
|
||
NEED_TPREL = 128,
|
||
NEED_DTPMOD = 256,
|
||
NEED_DTPREL = 512
|
||
};
|
||
|
||
struct elf_link_hash_entry *h = NULL;
|
||
unsigned long r_symndx = ELFNN_R_SYM (rel->r_info);
|
||
struct elfNN_ia64_dyn_sym_info *dyn_i;
|
||
int need_entry;
|
||
boolean maybe_dynamic;
|
||
int dynrel_type = R_IA64_NONE;
|
||
|
||
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;
|
||
|
||
h->elf_link_hash_flags |= ELF_LINK_HASH_REF_REGULAR;
|
||
}
|
||
|
||
/* 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 = false;
|
||
if (h && ((info->shared
|
||
&& (!info->symbolic || info->allow_shlib_undefined))
|
||
|| ! (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR)
|
||
|| h->root.type == bfd_link_hash_defweak
|
||
|| elfNN_ia64_aix_vec (abfd->xvec)))
|
||
maybe_dynamic = true;
|
||
|
||
need_entry = 0;
|
||
switch (ELFNN_R_TYPE (rel->r_info))
|
||
{
|
||
case R_IA64_TPREL64MSB:
|
||
case R_IA64_TPREL64LSB:
|
||
if (info->shared || maybe_dynamic)
|
||
need_entry = NEED_DYNREL;
|
||
dynrel_type = R_IA64_TPREL64LSB;
|
||
if (info->shared)
|
||
info->flags |= DF_STATIC_TLS;
|
||
break;
|
||
|
||
case R_IA64_LTOFF_TPREL22:
|
||
need_entry = NEED_TPREL;
|
||
if (info->shared)
|
||
info->flags |= DF_STATIC_TLS;
|
||
break;
|
||
|
||
case R_IA64_DTPREL64MSB:
|
||
case R_IA64_DTPREL64LSB:
|
||
if (info->shared || maybe_dynamic)
|
||
need_entry = NEED_DYNREL;
|
||
dynrel_type = R_IA64_DTPREL64LSB;
|
||
break;
|
||
|
||
case R_IA64_LTOFF_DTPREL22:
|
||
need_entry = NEED_DTPREL;
|
||
break;
|
||
|
||
case R_IA64_DTPMOD64MSB:
|
||
case R_IA64_DTPMOD64LSB:
|
||
if (info->shared || 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 (info->shared || h || elfNN_ia64_aix_vec (abfd->xvec))
|
||
need_entry = NEED_FPTR | NEED_DYNREL;
|
||
else
|
||
need_entry = NEED_FPTR;
|
||
dynrel_type = R_IA64_FPTR64LSB;
|
||
break;
|
||
|
||
case R_IA64_LTOFF22:
|
||
case R_IA64_LTOFF22X:
|
||
case R_IA64_LTOFF64I:
|
||
need_entry = NEED_GOT;
|
||
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 (info->shared || maybe_dynamic
|
||
|| (elfNN_ia64_aix_vec (abfd->xvec)
|
||
&& (!h || strcmp (h->root.root.string,
|
||
"__GLOB_DATA_PTR") != 0)))
|
||
need_entry = NEED_DYNREL;
|
||
dynrel_type = R_IA64_DIR64LSB;
|
||
break;
|
||
|
||
case R_IA64_IPLTMSB:
|
||
case R_IA64_IPLTLSB:
|
||
/* Shared objects will always need at least a REL relocation. */
|
||
if (info->shared || 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_PCREL64LSB;
|
||
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);
|
||
}
|
||
|
||
dyn_i = get_dyn_sym_info (ia64_info, h, abfd, rel, true);
|
||
|
||
/* Record whether or not this is a local symbol. */
|
||
dyn_i->h = h;
|
||
|
||
/* Create what's needed. */
|
||
if (need_entry & (NEED_GOT | 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_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 && (info->shared
|
||
/* AIX also needs one */
|
||
|| elfNN_ia64_aix_vec (abfd->xvec)))
|
||
{
|
||
if (! (_bfd_elfNN_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->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_PLT;
|
||
dyn_i->want_plt = 1;
|
||
}
|
||
if (need_entry & NEED_FULL_PLT)
|
||
dyn_i->want_plt2 = 1;
|
||
if (need_entry & NEED_PLTOFF)
|
||
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))
|
||
return false;
|
||
}
|
||
}
|
||
|
||
return true;
|
||
}
|
||
|
||
struct elfNN_ia64_allocate_data
|
||
{
|
||
struct bfd_link_info *info;
|
||
bfd_size_type ofs;
|
||
};
|
||
|
||
/* For cleanliness, and potentially faster dynamic loading, allocate
|
||
external GOT entries first. */
|
||
|
||
static boolean
|
||
allocate_global_data_got (dyn_i, data)
|
||
struct elfNN_ia64_dyn_sym_info *dyn_i;
|
||
PTR 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)
|
||
|| (elfNN_ia64_aix_vec (x->info->hash->creator)
|
||
&& (!dyn_i->h || strcmp (dyn_i->h->root.root.string,
|
||
"__GLOB_DATA_PTR") != 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)
|
||
{
|
||
dyn_i->dtpmod_offset = x->ofs;
|
||
x->ofs += 8;
|
||
}
|
||
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 boolean
|
||
allocate_global_fptr_got (dyn_i, data)
|
||
struct elfNN_ia64_dyn_sym_info *dyn_i;
|
||
PTR 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)
|
||
|| elfNN_ia64_aix_vec (x->info->hash->creator)))
|
||
{
|
||
dyn_i->got_offset = x->ofs;
|
||
x->ofs += 8;
|
||
}
|
||
return true;
|
||
}
|
||
|
||
/* Lastly, allocate all the GOT entries for local data. */
|
||
|
||
static boolean
|
||
allocate_local_got (dyn_i, data)
|
||
struct elfNN_ia64_dyn_sym_info *dyn_i;
|
||
PTR data;
|
||
{
|
||
struct elfNN_ia64_allocate_data *x = (struct elfNN_ia64_allocate_data *)data;
|
||
|
||
if (dyn_i->want_got
|
||
&& ! (elfNN_ia64_dynamic_symbol_p (dyn_i->h, x->info)
|
||
|| elfNN_ia64_aix_vec (x->info->hash->creator)))
|
||
{
|
||
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 (h)
|
||
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 boolean
|
||
allocate_fptr (dyn_i, data)
|
||
struct elfNN_ia64_dyn_sym_info *dyn_i;
|
||
PTR 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 (x->info->shared
|
||
/* AIX needs an FPTR in this case. */
|
||
|| (elfNN_ia64_aix_vec (x->info->hash->creator)
|
||
&& (!h
|
||
|| h->root.type == bfd_link_hash_defined
|
||
|| h->root.type == bfd_link_hash_defweak)))
|
||
{
|
||
if (h && h->dynindx == -1)
|
||
{
|
||
BFD_ASSERT ((h->root.type == bfd_link_hash_defined)
|
||
|| (h->root.type == bfd_link_hash_defweak));
|
||
|
||
if (!_bfd_elfNN_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 boolean
|
||
allocate_plt_entries (dyn_i, data)
|
||
struct elfNN_ia64_dyn_sym_info *dyn_i;
|
||
PTR 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 ELF_LINK_HASH_NEEDS_PLT. */
|
||
if (elfNN_ia64_dynamic_symbol_p (h, x->info))
|
||
{
|
||
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 boolean
|
||
allocate_plt2_entries (dyn_i, data)
|
||
struct elfNN_ia64_dyn_sym_info *dyn_i;
|
||
PTR 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 boolean
|
||
allocate_pltoff_entries (dyn_i, data)
|
||
struct elfNN_ia64_dyn_sym_info *dyn_i;
|
||
PTR 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 boolean
|
||
allocate_dynrel_entries (dyn_i, data)
|
||
struct elfNN_ia64_dyn_sym_info *dyn_i;
|
||
PTR 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;
|
||
boolean dynamic_symbol, shared;
|
||
|
||
ia64_info = elfNN_ia64_hash_table (x->info);
|
||
dynamic_symbol = elfNN_ia64_dynamic_symbol_p (dyn_i->h, x->info)
|
||
|| (elfNN_ia64_aix_vec (x->info->hash->creator)
|
||
/* Don't allocate an entry for __GLOB_DATA_PTR */
|
||
&& (!dyn_i->h || strcmp (dyn_i->h->root.root.string,
|
||
"__GLOB_DATA_PTR") != 0));
|
||
shared = x->info->shared;
|
||
|
||
/* 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_FPTR64LSB:
|
||
/* Allocate one iff !want_fptr, which by this point will
|
||
be true only if we're actually allocating one statically
|
||
in the main executable. */
|
||
if (dyn_i->want_fptr)
|
||
continue;
|
||
break;
|
||
case R_IA64_PCREL64LSB:
|
||
if (!dynamic_symbol)
|
||
continue;
|
||
break;
|
||
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_TPREL64LSB:
|
||
case R_IA64_DTPREL64LSB:
|
||
case R_IA64_DTPMOD64LSB:
|
||
break;
|
||
default:
|
||
abort ();
|
||
}
|
||
rent->srel->_raw_size += sizeof (ElfNN_External_Rela) * count;
|
||
}
|
||
|
||
/* Take care of the GOT and PLT relocations. */
|
||
|
||
if (((dynamic_symbol || shared) && dyn_i->want_got)
|
||
|| (dyn_i->want_ltoff_fptr && dyn_i->h && dyn_i->h->dynindx != -1))
|
||
ia64_info->rel_got_sec->_raw_size += sizeof (ElfNN_External_Rela);
|
||
if ((dynamic_symbol || shared) && dyn_i->want_tprel)
|
||
ia64_info->rel_got_sec->_raw_size += sizeof (ElfNN_External_Rela);
|
||
if ((dynamic_symbol || shared) && dyn_i->want_dtpmod)
|
||
ia64_info->rel_got_sec->_raw_size += sizeof (ElfNN_External_Rela);
|
||
if (dynamic_symbol && dyn_i->want_dtprel)
|
||
ia64_info->rel_got_sec->_raw_size += sizeof (ElfNN_External_Rela);
|
||
|
||
if (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->_raw_size += t;
|
||
}
|
||
|
||
return true;
|
||
}
|
||
|
||
static boolean
|
||
elfNN_ia64_adjust_dynamic_symbol (info, h)
|
||
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->weakdef != NULL)
|
||
{
|
||
BFD_ASSERT (h->weakdef->root.type == bfd_link_hash_defined
|
||
|| h->weakdef->root.type == bfd_link_hash_defweak);
|
||
h->root.u.def.section = h->weakdef->root.u.def.section;
|
||
h->root.u.def.value = h->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 boolean
|
||
elfNN_ia64_size_dynamic_sections (output_bfd, info)
|
||
bfd *output_bfd;
|
||
struct bfd_link_info *info;
|
||
{
|
||
struct elfNN_ia64_allocate_data data;
|
||
struct elfNN_ia64_link_hash_table *ia64_info;
|
||
asection *sec;
|
||
bfd *dynobj;
|
||
boolean relplt = false;
|
||
|
||
dynobj = elf_hash_table(info)->dynobj;
|
||
ia64_info = elfNN_ia64_hash_table (info);
|
||
BFD_ASSERT(dynobj != NULL);
|
||
data.info = info;
|
||
|
||
/* Set the contents of the .interp section to the interpreter. */
|
||
if (ia64_info->root.dynamic_sections_created
|
||
&& !info->shared)
|
||
{
|
||
sec = bfd_get_section_by_name (dynobj, ".interp");
|
||
BFD_ASSERT (sec != NULL);
|
||
sec->contents = (bfd_byte *) DYNAMIC_INTERPRETER (output_bfd);
|
||
sec->_raw_size = strlen (DYNAMIC_INTERPRETER (output_bfd)) + 1;
|
||
}
|
||
|
||
/* Allocate the GOT entries. */
|
||
|
||
if (ia64_info->got_sec)
|
||
{
|
||
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->got_sec->_raw_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->_raw_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)
|
||
{
|
||
BFD_ASSERT (ia64_info->root.dynamic_sections_created);
|
||
|
||
ia64_info->plt_sec->_raw_size = data.ofs;
|
||
|
||
/* If we've got a .plt, we need some extra memory for the dynamic
|
||
linker. We stuff these in .got.plt. */
|
||
sec = bfd_get_section_by_name (dynobj, ".got.plt");
|
||
sec->_raw_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->_raw_size = data.ofs;
|
||
}
|
||
|
||
if (ia64_info->root.dynamic_sections_created)
|
||
{
|
||
/* Allocate space for the dynamic relocations that turned out to be
|
||
required. */
|
||
|
||
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)
|
||
{
|
||
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->_raw_size == 0);
|
||
|
||
if (sec == ia64_info->got_sec)
|
||
strip = false;
|
||
else if (sec == ia64_info->rel_got_sec)
|
||
{
|
||
if (strip)
|
||
ia64_info->rel_got_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->fptr_sec)
|
||
{
|
||
if (strip)
|
||
ia64_info->fptr_sec = NULL;
|
||
}
|
||
else if (sec == ia64_info->plt_sec)
|
||
{
|
||
if (strip)
|
||
ia64_info->plt_sec = 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 (strncmp (name, ".rel", 4) == 0)
|
||
{
|
||
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)
|
||
_bfd_strip_section_from_output (info, sec);
|
||
else
|
||
{
|
||
/* Allocate memory for the section contents. */
|
||
sec->contents = (bfd_byte *) bfd_zalloc (dynobj, sec->_raw_size);
|
||
if (sec->contents == NULL && sec->_raw_size != 0)
|
||
return false;
|
||
}
|
||
}
|
||
|
||
if (elf_hash_table (info)->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 (!info->shared)
|
||
{
|
||
/* The DT_DEBUG entry is filled in by the dynamic linker and used
|
||
by the debugger. */
|
||
#define add_dynamic_entry(TAG, VAL) \
|
||
bfd_elfNN_add_dynamic_entry (info, (bfd_vma) (TAG), (bfd_vma) (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 bfd_reloc_status_type
|
||
elfNN_ia64_install_value (abfd, hit_addr, v, r_type)
|
||
bfd *abfd;
|
||
bfd_byte *hit_addr;
|
||
bfd_vma v;
|
||
unsigned int r_type;
|
||
{
|
||
const struct ia64_operand *op;
|
||
int bigendian = 0, shift = 0;
|
||
bfd_vma t0, t1, insn, dword;
|
||
enum ia64_opnd opnd;
|
||
const char *err;
|
||
size_t size = 8;
|
||
#ifdef BFD_HOST_U_64_BIT
|
||
BFD_HOST_U_64_BIT val = (BFD_HOST_U_64_BIT) v;
|
||
#else
|
||
bfd_vma val = v;
|
||
#endif
|
||
|
||
opnd = IA64_OPND_NIL;
|
||
switch (r_type)
|
||
{
|
||
case R_IA64_NONE:
|
||
case R_IA64_LDXMOV:
|
||
return bfd_reloc_ok;
|
||
|
||
/* Instruction relocations. */
|
||
|
||
case R_IA64_IMM14:
|
||
case R_IA64_TPREL14:
|
||
case R_IA64_DTPREL14:
|
||
opnd = IA64_OPND_IMM14;
|
||
break;
|
||
|
||
case R_IA64_PCREL21F: opnd = IA64_OPND_TGT25; break;
|
||
case R_IA64_PCREL21M: opnd = IA64_OPND_TGT25b; break;
|
||
case R_IA64_PCREL60B: opnd = IA64_OPND_TGT64; break;
|
||
case R_IA64_PCREL21B:
|
||
case R_IA64_PCREL21BI:
|
||
opnd = IA64_OPND_TGT25c;
|
||
break;
|
||
|
||
case R_IA64_IMM22:
|
||
case R_IA64_GPREL22:
|
||
case R_IA64_LTOFF22:
|
||
case R_IA64_LTOFF22X:
|
||
case R_IA64_PLTOFF22:
|
||
case R_IA64_PCREL22:
|
||
case R_IA64_LTOFF_FPTR22:
|
||
case R_IA64_TPREL22:
|
||
case R_IA64_DTPREL22:
|
||
case R_IA64_LTOFF_TPREL22:
|
||
case R_IA64_LTOFF_DTPMOD22:
|
||
case R_IA64_LTOFF_DTPREL22:
|
||
opnd = IA64_OPND_IMM22;
|
||
break;
|
||
|
||
case R_IA64_IMM64:
|
||
case R_IA64_GPREL64I:
|
||
case R_IA64_LTOFF64I:
|
||
case R_IA64_PLTOFF64I:
|
||
case R_IA64_PCREL64I:
|
||
case R_IA64_FPTR64I:
|
||
case R_IA64_LTOFF_FPTR64I:
|
||
case R_IA64_TPREL64I:
|
||
case R_IA64_DTPREL64I:
|
||
opnd = IA64_OPND_IMMU64;
|
||
break;
|
||
|
||
/* Data relocations. */
|
||
|
||
case R_IA64_DIR32MSB:
|
||
case R_IA64_GPREL32MSB:
|
||
case R_IA64_FPTR32MSB:
|
||
case R_IA64_PCREL32MSB:
|
||
case R_IA64_LTOFF_FPTR32MSB:
|
||
case R_IA64_SEGREL32MSB:
|
||
case R_IA64_SECREL32MSB:
|
||
case R_IA64_LTV32MSB:
|
||
case R_IA64_DTPREL32MSB:
|
||
size = 4; bigendian = 1;
|
||
break;
|
||
|
||
case R_IA64_DIR32LSB:
|
||
case R_IA64_GPREL32LSB:
|
||
case R_IA64_FPTR32LSB:
|
||
case R_IA64_PCREL32LSB:
|
||
case R_IA64_LTOFF_FPTR32LSB:
|
||
case R_IA64_SEGREL32LSB:
|
||
case R_IA64_SECREL32LSB:
|
||
case R_IA64_LTV32LSB:
|
||
case R_IA64_DTPREL32LSB:
|
||
size = 4; bigendian = 0;
|
||
break;
|
||
|
||
case R_IA64_DIR64MSB:
|
||
case R_IA64_GPREL64MSB:
|
||
case R_IA64_PLTOFF64MSB:
|
||
case R_IA64_FPTR64MSB:
|
||
case R_IA64_PCREL64MSB:
|
||
case R_IA64_LTOFF_FPTR64MSB:
|
||
case R_IA64_SEGREL64MSB:
|
||
case R_IA64_SECREL64MSB:
|
||
case R_IA64_LTV64MSB:
|
||
case R_IA64_TPREL64MSB:
|
||
case R_IA64_DTPMOD64MSB:
|
||
case R_IA64_DTPREL64MSB:
|
||
size = 8; bigendian = 1;
|
||
break;
|
||
|
||
case R_IA64_DIR64LSB:
|
||
case R_IA64_GPREL64LSB:
|
||
case R_IA64_PLTOFF64LSB:
|
||
case R_IA64_FPTR64LSB:
|
||
case R_IA64_PCREL64LSB:
|
||
case R_IA64_LTOFF_FPTR64LSB:
|
||
case R_IA64_SEGREL64LSB:
|
||
case R_IA64_SECREL64LSB:
|
||
case R_IA64_LTV64LSB:
|
||
case R_IA64_TPREL64LSB:
|
||
case R_IA64_DTPMOD64LSB:
|
||
case R_IA64_DTPREL64LSB:
|
||
size = 8; bigendian = 0;
|
||
break;
|
||
|
||
/* Unsupported / Dynamic relocations. */
|
||
default:
|
||
return bfd_reloc_notsupported;
|
||
}
|
||
|
||
switch (opnd)
|
||
{
|
||
case IA64_OPND_IMMU64:
|
||
hit_addr -= (long) hit_addr & 0x3;
|
||
t0 = bfd_get_64 (abfd, hit_addr);
|
||
t1 = bfd_get_64 (abfd, hit_addr + 8);
|
||
|
||
/* tmpl/s: bits 0.. 5 in t0
|
||
slot 0: bits 5..45 in t0
|
||
slot 1: bits 46..63 in t0, bits 0..22 in t1
|
||
slot 2: bits 23..63 in t1 */
|
||
|
||
/* First, clear the bits that form the 64 bit constant. */
|
||
t0 &= ~(0x3ffffLL << 46);
|
||
t1 &= ~(0x7fffffLL
|
||
| (( (0x07fLL << 13) | (0x1ffLL << 27)
|
||
| (0x01fLL << 22) | (0x001LL << 21)
|
||
| (0x001LL << 36)) << 23));
|
||
|
||
t0 |= ((val >> 22) & 0x03ffffLL) << 46; /* 18 lsbs of imm41 */
|
||
t1 |= ((val >> 40) & 0x7fffffLL) << 0; /* 23 msbs of imm41 */
|
||
t1 |= ( (((val >> 0) & 0x07f) << 13) /* imm7b */
|
||
| (((val >> 7) & 0x1ff) << 27) /* imm9d */
|
||
| (((val >> 16) & 0x01f) << 22) /* imm5c */
|
||
| (((val >> 21) & 0x001) << 21) /* ic */
|
||
| (((val >> 63) & 0x001) << 36)) << 23; /* i */
|
||
|
||
bfd_put_64 (abfd, t0, hit_addr);
|
||
bfd_put_64 (abfd, t1, hit_addr + 8);
|
||
break;
|
||
|
||
case IA64_OPND_TGT64:
|
||
hit_addr -= (long) hit_addr & 0x3;
|
||
t0 = bfd_get_64 (abfd, hit_addr);
|
||
t1 = bfd_get_64 (abfd, hit_addr + 8);
|
||
|
||
/* tmpl/s: bits 0.. 5 in t0
|
||
slot 0: bits 5..45 in t0
|
||
slot 1: bits 46..63 in t0, bits 0..22 in t1
|
||
slot 2: bits 23..63 in t1 */
|
||
|
||
/* First, clear the bits that form the 64 bit constant. */
|
||
t0 &= ~(0x3ffffLL << 46);
|
||
t1 &= ~(0x7fffffLL
|
||
| ((1LL << 36 | 0xfffffLL << 13) << 23));
|
||
|
||
val >>= 4;
|
||
t0 |= ((val >> 20) & 0xffffLL) << 2 << 46; /* 16 lsbs of imm39 */
|
||
t1 |= ((val >> 36) & 0x7fffffLL) << 0; /* 23 msbs of imm39 */
|
||
t1 |= ((((val >> 0) & 0xfffffLL) << 13) /* imm20b */
|
||
| (((val >> 59) & 0x1LL) << 36)) << 23; /* i */
|
||
|
||
bfd_put_64 (abfd, t0, hit_addr);
|
||
bfd_put_64 (abfd, t1, hit_addr + 8);
|
||
break;
|
||
|
||
default:
|
||
switch ((long) hit_addr & 0x3)
|
||
{
|
||
case 0: shift = 5; break;
|
||
case 1: shift = 14; hit_addr += 3; break;
|
||
case 2: shift = 23; hit_addr += 6; break;
|
||
case 3: return bfd_reloc_notsupported; /* shouldn't happen... */
|
||
}
|
||
dword = bfd_get_64 (abfd, hit_addr);
|
||
insn = (dword >> shift) & 0x1ffffffffffLL;
|
||
|
||
op = elf64_ia64_operands + opnd;
|
||
err = (*op->insert) (op, val, (ia64_insn *)& insn);
|
||
if (err)
|
||
return bfd_reloc_overflow;
|
||
|
||
dword &= ~(0x1ffffffffffLL << shift);
|
||
dword |= (insn << shift);
|
||
bfd_put_64 (abfd, dword, hit_addr);
|
||
break;
|
||
|
||
case IA64_OPND_NIL:
|
||
/* A data relocation. */
|
||
if (bigendian)
|
||
if (size == 4)
|
||
bfd_putb32 (val, hit_addr);
|
||
else
|
||
bfd_putb64 (val, hit_addr);
|
||
else
|
||
if (size == 4)
|
||
bfd_putl32 (val, hit_addr);
|
||
else
|
||
bfd_putl64 (val, hit_addr);
|
||
break;
|
||
}
|
||
|
||
return bfd_reloc_ok;
|
||
}
|
||
|
||
static void
|
||
elfNN_ia64_install_dyn_reloc (abfd, info, sec, srel, offset, type,
|
||
dynindx, addend)
|
||
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;
|
||
|
||
offset += sec->output_section->vma + sec->output_offset;
|
||
|
||
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 | 1) == (bfd_vma) -1)
|
||
{
|
||
/* 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;
|
||
}
|
||
|
||
bfd_elfNN_swap_reloca_out (abfd, &outrel,
|
||
((ElfNN_External_Rela *) srel->contents
|
||
+ srel->reloc_count++));
|
||
BFD_ASSERT (sizeof (ElfNN_External_Rela) * srel->reloc_count
|
||
<= srel->_cooked_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 (abfd, info, dyn_i, dynindx, addend, value, dyn_r_type)
|
||
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;
|
||
boolean done;
|
||
bfd_vma got_offset;
|
||
|
||
ia64_info = elfNN_ia64_hash_table (info);
|
||
got_sec = ia64_info->got_sec;
|
||
|
||
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:
|
||
done = dyn_i->dtpmod_done;
|
||
dyn_i->dtpmod_done = true;
|
||
got_offset = dyn_i->dtpmod_offset;
|
||
break;
|
||
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 ((info->shared && dyn_r_type != R_IA64_DTPREL64LSB)
|
||
|| elfNN_ia64_dynamic_symbol_p (dyn_i->h, info)
|
||
|| elfNN_ia64_aix_vec (abfd->xvec)
|
||
|| (dynindx != -1 && dyn_r_type == R_IA64_FPTR64LSB))
|
||
{
|
||
if (dynindx == -1
|
||
&& dyn_r_type != R_IA64_TPREL64LSB
|
||
&& dyn_r_type != R_IA64_DTPMOD64LSB
|
||
&& dyn_r_type != R_IA64_DTPREL64LSB)
|
||
{
|
||
dyn_r_type = R_IA64_REL64LSB;
|
||
dynindx = 0;
|
||
addend = value;
|
||
}
|
||
|
||
if (bfd_big_endian (abfd))
|
||
{
|
||
switch (dyn_r_type)
|
||
{
|
||
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->rel_got_sec,
|
||
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 (abfd, info, dyn_i, value)
|
||
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);
|
||
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);
|
||
}
|
||
|
||
/* 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 (abfd, info, dyn_i, value, is_plt)
|
||
bfd *abfd;
|
||
struct bfd_link_info *info;
|
||
struct elfNN_ia64_dyn_sym_info *dyn_i;
|
||
bfd_vma value;
|
||
boolean is_plt;
|
||
{
|
||
struct elfNN_ia64_link_hash_table *ia64_info;
|
||
asection *pltoff_sec;
|
||
|
||
ia64_info = elfNN_ia64_hash_table (info);
|
||
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 && info->shared)
|
||
{
|
||
unsigned int dyn_r_type;
|
||
|
||
if (bfd_big_endian (abfd))
|
||
dyn_r_type = R_IA64_REL64MSB;
|
||
else
|
||
dyn_r_type = R_IA64_REL64LSB;
|
||
|
||
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 + 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(16, PT_TLS p_align). */
|
||
|
||
static bfd_vma
|
||
elfNN_ia64_tprel_base (info)
|
||
struct bfd_link_info *info;
|
||
{
|
||
struct elf_link_tls_segment *tls_segment
|
||
= elf_hash_table (info)->tls_segment;
|
||
|
||
BFD_ASSERT (tls_segment != NULL);
|
||
return (tls_segment->start
|
||
- align_power ((bfd_vma) 16, tls_segment->align));
|
||
}
|
||
|
||
/* 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 (info)
|
||
struct bfd_link_info *info;
|
||
{
|
||
BFD_ASSERT (elf_hash_table (info)->tls_segment != NULL);
|
||
return elf_hash_table (info)->tls_segment->start;
|
||
}
|
||
|
||
/* 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 (a, b)
|
||
const PTR a;
|
||
const PTR 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);
|
||
}
|
||
|
||
static boolean
|
||
elfNN_ia64_final_link (abfd, info)
|
||
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);
|
||
|
||
/* Make sure we've got ourselves a nice fat __gp value. */
|
||
if (!info->relocateable)
|
||
{
|
||
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;
|
||
|
||
/* 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;
|
||
hi = os->vma + os->_raw_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;
|
||
}
|
||
}
|
||
|
||
/* 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. */
|
||
|
||
asection *got_sec = ia64_info->got_sec;
|
||
|
||
/* 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
|
||
gp_val = min_vma;
|
||
|
||
/* 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)
|
||
{
|
||
(*_bfd_error_handler)
|
||
(_("%s: short data segment overflowed (0x%lx >= 0x400000)"),
|
||
bfd_get_filename (abfd),
|
||
(unsigned long) (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)
|
||
(_("%s: __gp does not cover short data segment"),
|
||
bfd_get_filename (abfd));
|
||
return false;
|
||
}
|
||
}
|
||
|
||
_bfd_set_gp_value (abfd, gp_val);
|
||
|
||
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 (!info->relocateable)
|
||
{
|
||
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->_raw_size);
|
||
if (unwind_output_sec->contents == NULL)
|
||
return false;
|
||
}
|
||
}
|
||
|
||
/* Invoke the regular ELF backend linker to do all the work. */
|
||
if (!bfd_elfNN_bfd_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->_raw_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->_raw_size))
|
||
return false;
|
||
}
|
||
|
||
return true;
|
||
}
|
||
|
||
static boolean
|
||
elfNN_ia64_relocate_section (output_bfd, info, input_bfd, input_section,
|
||
contents, relocs, local_syms, local_sections)
|
||
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;
|
||
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);
|
||
|
||
/* Infect various flags from the input section to the output section. */
|
||
if (info->relocateable)
|
||
{
|
||
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;
|
||
return true;
|
||
}
|
||
|
||
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;
|
||
boolean dynamic_symbol_p;
|
||
boolean undef_weak_ref;
|
||
|
||
r_type = ELFNN_R_TYPE (rel->r_info);
|
||
if (r_type > R_IA64_MAX_RELOC_CODE)
|
||
{
|
||
(*_bfd_error_handler)
|
||
(_("%s: unknown relocation type %d"),
|
||
bfd_archive_filename (input_bfd), (int)r_type);
|
||
bfd_set_error (bfd_error_bad_value);
|
||
ret_val = false;
|
||
continue;
|
||
}
|
||
|
||
howto = 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. */
|
||
sym = local_syms + r_symndx;
|
||
sym_sec = local_sections[r_symndx];
|
||
value = _bfd_elf_rela_local_sym (output_bfd, sym, sym_sec, rel);
|
||
if ((sym_sec->flags & SEC_MERGE)
|
||
&& ELF_ST_TYPE (sym->st_info) == STT_SECTION
|
||
&& (elf_section_data (sym_sec)->sec_info_type
|
||
== ELF_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;
|
||
asection *msec;
|
||
|
||
for (dynent = loc_h->info; dynent; dynent = dynent->next)
|
||
{
|
||
msec = sym_sec;
|
||
dynent->addend =
|
||
_bfd_merged_section_offset (output_bfd, &msec,
|
||
elf_section_data (msec)->
|
||
sec_info,
|
||
sym->st_value
|
||
+ dynent->addend,
|
||
(bfd_vma) 0);
|
||
dynent->addend -= sym->st_value;
|
||
dynent->addend += msec->output_section->vma
|
||
+ msec->output_offset
|
||
- sym_sec->output_section->vma
|
||
- sym_sec->output_offset;
|
||
}
|
||
loc_h->sec_merge_done = 1;
|
||
}
|
||
}
|
||
}
|
||
else
|
||
{
|
||
long indx;
|
||
|
||
/* Reloc against global symbol. */
|
||
indx = r_symndx - symtab_hdr->sh_info;
|
||
h = elf_sym_hashes (input_bfd)[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;
|
||
|
||
value = 0;
|
||
if (h->root.type == bfd_link_hash_defined
|
||
|| h->root.type == bfd_link_hash_defweak)
|
||
{
|
||
sym_sec = h->root.u.def.section;
|
||
|
||
/* Detect the cases that sym_sec->output_section is
|
||
expected to be NULL -- all cases in which the symbol
|
||
is defined in another shared module. This includes
|
||
PLT relocs for which we've created a PLT entry and
|
||
other relocs for which we're prepared to create
|
||
dynamic relocations. */
|
||
/* ??? Just accept it NULL and continue. */
|
||
|
||
if (sym_sec->output_section != NULL)
|
||
{
|
||
value = (h->root.u.def.value
|
||
+ sym_sec->output_section->vma
|
||
+ sym_sec->output_offset);
|
||
}
|
||
}
|
||
else if (h->root.type == bfd_link_hash_undefweak)
|
||
undef_weak_ref = true;
|
||
else if (info->shared
|
||
&& (!info->symbolic || info->allow_shlib_undefined)
|
||
&& !info->no_undefined
|
||
&& ELF_ST_VISIBILITY (h->other) == STV_DEFAULT)
|
||
;
|
||
else
|
||
{
|
||
if (! ((*info->callbacks->undefined_symbol)
|
||
(info, h->root.root.string, input_bfd,
|
||
input_section, rel->r_offset,
|
||
(!info->shared || info->no_undefined
|
||
|| ELF_ST_VISIBILITY (h->other)))))
|
||
return false;
|
||
ret_val = false;
|
||
continue;
|
||
}
|
||
}
|
||
|
||
hit_addr = contents + rel->r_offset;
|
||
value += rel->r_addend;
|
||
dynamic_symbol_p = elfNN_ia64_dynamic_symbol_p (h, info);
|
||
|
||
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 || info->shared
|
||
|| (elfNN_ia64_aix_vec (info->hash->creator)
|
||
/* Don't emit relocs for __GLOB_DATA_PTR on AIX. */
|
||
&& (!h || strcmp (h->root.root.string,
|
||
"__GLOB_DATA_PTR") != 0)))
|
||
&& r_symndx != 0
|
||
&& (input_section->flags & SEC_ALLOC) != 0)
|
||
{
|
||
unsigned int dyn_r_type;
|
||
long dynindx;
|
||
bfd_vma addend;
|
||
|
||
BFD_ASSERT (srel != NULL);
|
||
|
||
/* 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:
|
||
/* 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)
|
||
(_("%s: linking non-pic code in a shared library"),
|
||
bfd_archive_filename (input_bfd));
|
||
ret_val = false;
|
||
continue;
|
||
}
|
||
dynindx = 0;
|
||
addend = value;
|
||
}
|
||
|
||
if (elfNN_ia64_aix_vec (info->hash->creator))
|
||
rel->r_addend = value;
|
||
elfNN_ia64_install_dyn_reloc (output_bfd, info, input_section,
|
||
srel, rel->r_offset, dyn_r_type,
|
||
dynindx, addend);
|
||
}
|
||
/* FALLTHRU */
|
||
|
||
case R_IA64_LTV32MSB:
|
||
case R_IA64_LTV32LSB:
|
||
case R_IA64_LTV64MSB:
|
||
case R_IA64_LTV64LSB:
|
||
r = elfNN_ia64_install_value (output_bfd, 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)
|
||
(_("%s: @gprel relocation against dynamic symbol %s"),
|
||
bfd_archive_filename (input_bfd), h->root.root.string);
|
||
ret_val = false;
|
||
continue;
|
||
}
|
||
value -= gp_val;
|
||
r = elfNN_ia64_install_value (output_bfd, 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_DIR64LSB);
|
||
value -= gp_val;
|
||
r = elfNN_ia64_install_value (output_bfd, 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 = elfNN_ia64_install_value (output_bfd, 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);
|
||
}
|
||
else
|
||
{
|
||
long dynindx;
|
||
|
||
/* 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));
|
||
}
|
||
|
||
elfNN_ia64_install_dyn_reloc (output_bfd, info, input_section,
|
||
srel, rel->r_offset, r_type,
|
||
dynindx, rel->r_addend);
|
||
value = 0;
|
||
}
|
||
|
||
r = elfNN_ia64_install_value (output_bfd, 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_FPTR64LSB);
|
||
value -= gp_val;
|
||
r = elfNN_ia64_install_value (output_bfd, 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
|
||
|| elfNN_ia64_aix_vec (info->hash->creator))
|
||
&& r_symndx != 0)
|
||
{
|
||
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_PCREL21BI:
|
||
case R_IA64_PCREL21F:
|
||
case R_IA64_PCREL21M:
|
||
/* ??? These two are only used for speculation fixup code.
|
||
They should never be dynamic. */
|
||
if (dynamic_symbol_p)
|
||
{
|
||
(*_bfd_error_handler)
|
||
(_("%s: dynamic relocation against speculation fixup"),
|
||
bfd_archive_filename (input_bfd));
|
||
ret_val = false;
|
||
continue;
|
||
}
|
||
if (undef_weak_ref)
|
||
{
|
||
(*_bfd_error_handler)
|
||
(_("%s: speculation fixup against undefined weak symbol"),
|
||
bfd_archive_filename (input_bfd));
|
||
ret_val = false;
|
||
continue;
|
||
}
|
||
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->plt_sec->output_section->vma
|
||
+ ia64_info->plt_sec->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_PCREL22:
|
||
case R_IA64_PCREL64I:
|
||
finish_pcrel:
|
||
/* Make pc-relative. */
|
||
value -= (input_section->output_section->vma
|
||
+ input_section->output_offset
|
||
+ rel->r_offset) & ~ (bfd_vma) 0x3;
|
||
r = elfNN_ia64_install_value (output_bfd, hit_addr, value, r_type);
|
||
break;
|
||
|
||
case R_IA64_SEGREL32MSB:
|
||
case R_IA64_SEGREL32LSB:
|
||
case R_IA64_SEGREL64MSB:
|
||
case R_IA64_SEGREL64LSB:
|
||
if (r_symndx == 0)
|
||
{
|
||
/* If the input section was discarded from the output, then
|
||
do nothing. */
|
||
r = bfd_reloc_ok;
|
||
}
|
||
else
|
||
{
|
||
struct elf_segment_map *m;
|
||
Elf_Internal_Phdr *p;
|
||
|
||
/* Find the segment that contains the output_section. */
|
||
for (m = elf_tdata (output_bfd)->segment_map,
|
||
p = elf_tdata (output_bfd)->phdr;
|
||
m != NULL;
|
||
m = m->next, p++)
|
||
{
|
||
int i;
|
||
for (i = m->count - 1; i >= 0; i--)
|
||
if (m->sections[i] == sym_sec->output_section)
|
||
break;
|
||
if (i >= 0)
|
||
break;
|
||
}
|
||
|
||
if (m == 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 = elfNN_ia64_install_value (output_bfd, 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. */
|
||
if (value > input_section->output_section->vma)
|
||
value -= input_section->output_section->vma;
|
||
else
|
||
value = 0;
|
||
r = elfNN_ia64_install_value (output_bfd, 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 || info->shared)
|
||
&& (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;
|
||
elfNN_ia64_install_value (output_bfd, hit_addr, value, r_type);
|
||
r = elfNN_ia64_install_value (output_bfd, hit_addr + 8, gp_val,
|
||
r_type);
|
||
break;
|
||
|
||
case R_IA64_TPREL14:
|
||
case R_IA64_TPREL22:
|
||
case R_IA64_TPREL64I:
|
||
value -= elfNN_ia64_tprel_base (info);
|
||
r = elfNN_ia64_install_value (output_bfd, hit_addr, value, r_type);
|
||
break;
|
||
|
||
case R_IA64_DTPREL14:
|
||
case R_IA64_DTPREL22:
|
||
case R_IA64_DTPREL64I:
|
||
value -= elfNN_ia64_dtprel_base (info);
|
||
r = elfNN_ia64_install_value (output_bfd, 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;
|
||
|
||
switch (r_type)
|
||
{
|
||
default:
|
||
case R_IA64_LTOFF_TPREL22:
|
||
if (!dynamic_symbol_p && !info->shared)
|
||
value -= elfNN_ia64_tprel_base (info);
|
||
got_r_type = R_IA64_TPREL64LSB;
|
||
break;
|
||
case R_IA64_LTOFF_DTPMOD22:
|
||
if (!dynamic_symbol_p && !info->shared)
|
||
value = 1;
|
||
got_r_type = R_IA64_DTPMOD64LSB;
|
||
break;
|
||
case R_IA64_LTOFF_DTPREL22:
|
||
if (!dynamic_symbol_p)
|
||
value -= elfNN_ia64_dtprel_base (info);
|
||
got_r_type = R_IA64_DTPREL64LSB;
|
||
break;
|
||
}
|
||
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, got_r_type);
|
||
value -= gp_val;
|
||
r = elfNN_ia64_install_value (output_bfd, 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_string_from_elf_section (input_bfd,
|
||
symtab_hdr->sh_link,
|
||
sym->st_name);
|
||
if (name == NULL)
|
||
return false;
|
||
if (*name == '\0')
|
||
name = bfd_section_name (input_bfd, input_section);
|
||
}
|
||
if (!(*info->callbacks->warning) (info, _("unsupported reloc"),
|
||
name, input_bfd,
|
||
input_section, rel->r_offset))
|
||
return false;
|
||
ret_val = false;
|
||
}
|
||
break;
|
||
|
||
case bfd_reloc_dangerous:
|
||
case bfd_reloc_outofrange:
|
||
case bfd_reloc_overflow:
|
||
default:
|
||
{
|
||
const char *name;
|
||
|
||
if (h)
|
||
name = h->root.root.string;
|
||
else
|
||
{
|
||
name = bfd_elf_string_from_elf_section (input_bfd,
|
||
symtab_hdr->sh_link,
|
||
sym->st_name);
|
||
if (name == NULL)
|
||
return false;
|
||
if (*name == '\0')
|
||
name = bfd_section_name (input_bfd, input_section);
|
||
}
|
||
if (!(*info->callbacks->reloc_overflow) (info, name,
|
||
howto->name,
|
||
(bfd_vma) 0,
|
||
input_bfd,
|
||
input_section,
|
||
rel->r_offset))
|
||
return false;
|
||
ret_val = false;
|
||
}
|
||
break;
|
||
}
|
||
}
|
||
|
||
return ret_val;
|
||
}
|
||
|
||
static boolean
|
||
elfNN_ia64_finish_dynamic_symbol (output_bfd, info, h, sym)
|
||
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);
|
||
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, index;
|
||
ElfNN_External_Rela *rel;
|
||
|
||
gp_val = _bfd_get_gp_value (output_bfd);
|
||
|
||
/* Initialize the minimal PLT entry. */
|
||
|
||
index = (dyn_i->plt_offset - PLT_HEADER_SIZE) / PLT_MIN_ENTRY_SIZE;
|
||
plt_sec = ia64_info->plt_sec;
|
||
loc = plt_sec->contents + dyn_i->plt_offset;
|
||
|
||
memcpy (loc, plt_min_entry, PLT_MIN_ENTRY_SIZE);
|
||
elfNN_ia64_install_value (output_bfd, loc, index, R_IA64_IMM22);
|
||
elfNN_ia64_install_value (output_bfd, 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);
|
||
elfNN_ia64_install_value (output_bfd, 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.h did some for us. */
|
||
if ((h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0)
|
||
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. */
|
||
|
||
rel = (ElfNN_External_Rela *)ia64_info->rel_pltoff_sec->contents;
|
||
rel += ia64_info->rel_pltoff_sec->reloc_count;
|
||
|
||
bfd_elfNN_swap_reloca_out (output_bfd, &outrel, rel + index);
|
||
}
|
||
|
||
/* Mark some specially defined symbols as absolute. */
|
||
if (strcmp (h->root.root.string, "_DYNAMIC") == 0
|
||
|| strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0
|
||
|| strcmp (h->root.root.string, "_PROCEDURE_LINKAGE_TABLE_") == 0)
|
||
sym->st_shndx = SHN_ABS;
|
||
|
||
return true;
|
||
}
|
||
|
||
static boolean
|
||
elfNN_ia64_finish_dynamic_sections (abfd, info)
|
||
bfd *abfd;
|
||
struct bfd_link_info *info;
|
||
{
|
||
struct elfNN_ia64_link_hash_table *ia64_info;
|
||
bfd *dynobj;
|
||
|
||
ia64_info = elfNN_ia64_hash_table (info);
|
||
dynobj = ia64_info->root.dynobj;
|
||
|
||
if (elf_hash_table (info)->dynamic_sections_created)
|
||
{
|
||
ElfNN_External_Dyn *dyncon, *dynconend;
|
||
asection *sdyn, *sgotplt;
|
||
bfd_vma gp_val;
|
||
|
||
sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
|
||
sgotplt = bfd_get_section_by_name (dynobj, ".got.plt");
|
||
BFD_ASSERT (sdyn != NULL);
|
||
dyncon = (ElfNN_External_Dyn *) sdyn->contents;
|
||
dynconend = (ElfNN_External_Dyn *) (sdyn->contents + sdyn->_raw_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;
|
||
|
||
case DT_RELASZ:
|
||
/* Do not have RELASZ include JMPREL. This makes things
|
||
easier on ld.so. This is not what the rest of BFD set up. */
|
||
dyn.d_un.d_val -= (ia64_info->minplt_entries
|
||
* sizeof (ElfNN_External_Rela));
|
||
break;
|
||
}
|
||
|
||
bfd_elfNN_swap_dyn_out (abfd, &dyn, dyncon);
|
||
}
|
||
|
||
/* Initialize the PLT0 entry */
|
||
if (ia64_info->plt_sec)
|
||
{
|
||
bfd_byte *loc = ia64_info->plt_sec->contents;
|
||
bfd_vma pltres;
|
||
|
||
memcpy (loc, plt_header, PLT_HEADER_SIZE);
|
||
|
||
pltres = (sgotplt->output_section->vma
|
||
+ sgotplt->output_offset
|
||
- gp_val);
|
||
|
||
elfNN_ia64_install_value (abfd, loc+1, pltres, R_IA64_GPREL22);
|
||
}
|
||
}
|
||
|
||
return true;
|
||
}
|
||
|
||
/* ELF file flag handling: */
|
||
|
||
/* Function to keep IA-64 specific file flags. */
|
||
static boolean
|
||
elfNN_ia64_set_private_flags (abfd, 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 boolean
|
||
elfNN_ia64_merge_private_bfd_data (ibfd, obfd)
|
||
bfd *ibfd, *obfd;
|
||
{
|
||
flagword out_flags;
|
||
flagword in_flags;
|
||
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)
|
||
(_("%s: linking trap-on-NULL-dereference with non-trapping files"),
|
||
bfd_archive_filename (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)
|
||
(_("%s: linking big-endian files with little-endian files"),
|
||
bfd_archive_filename (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)
|
||
(_("%s: linking 64-bit files with 32-bit files"),
|
||
bfd_archive_filename (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)
|
||
(_("%s: linking constant-gp files with non-constant-gp files"),
|
||
bfd_archive_filename (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)
|
||
(_("%s: linking auto-pic files with non-auto-pic files"),
|
||
bfd_archive_filename (ibfd));
|
||
|
||
bfd_set_error (bfd_error_bad_value);
|
||
ok = false;
|
||
}
|
||
|
||
return ok;
|
||
}
|
||
|
||
static boolean
|
||
elfNN_ia64_print_private_bfd_data (abfd, ptr)
|
||
bfd *abfd;
|
||
PTR 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 (rela)
|
||
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 boolean
|
||
elfNN_ia64_hpux_vec (const bfd_target *vec)
|
||
{
|
||
extern const bfd_target bfd_elfNN_ia64_hpux_big_vec;
|
||
return (vec == & bfd_elfNN_ia64_hpux_big_vec);
|
||
}
|
||
|
||
static void
|
||
elfNN_hpux_post_process_headers (abfd, info)
|
||
bfd *abfd;
|
||
struct bfd_link_info *info ATTRIBUTE_UNUSED;
|
||
{
|
||
Elf_Internal_Ehdr *i_ehdrp = elf_elfheader (abfd);
|
||
|
||
i_ehdrp->e_ident[EI_OSABI] = ELFOSABI_HPUX;
|
||
i_ehdrp->e_ident[EI_ABIVERSION] = 1;
|
||
}
|
||
|
||
boolean
|
||
elfNN_hpux_backend_section_from_bfd_section (abfd, sec, retval)
|
||
bfd *abfd ATTRIBUTE_UNUSED;
|
||
asection *sec;
|
||
int *retval;
|
||
{
|
||
if (bfd_is_com_section (sec))
|
||
{
|
||
*retval = SHN_IA_64_ANSI_COMMON;
|
||
return true;
|
||
}
|
||
return false;
|
||
}
|
||
|
||
#define TARGET_LITTLE_SYM bfd_elfNN_ia64_little_vec
|
||
#define TARGET_LITTLE_NAME "elfNN-ia64-little"
|
||
#define TARGET_BIG_SYM bfd_elfNN_ia64_big_vec
|
||
#define TARGET_BIG_NAME "elfNN-ia64-big"
|
||
#define ELF_ARCH bfd_arch_ia64
|
||
#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_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_info_to_howto \
|
||
elfNN_ia64_info_to_howto
|
||
|
||
#define bfd_elfNN_bfd_reloc_type_lookup \
|
||
elfNN_ia64_reloc_type_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
|
||
|
||
/* 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_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_plt_header_size PLT_HEADER_SIZE
|
||
#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_reloc_type_class elfNN_ia64_reloc_type_class
|
||
#define elf_backend_rela_normal 1
|
||
|
||
#include "elfNN-target.h"
|
||
|
||
/* AIX-specific vectors. */
|
||
|
||
#undef TARGET_LITTLE_SYM
|
||
#define TARGET_LITTLE_SYM bfd_elfNN_ia64_aix_little_vec
|
||
#undef TARGET_LITTLE_NAME
|
||
#define TARGET_LITTLE_NAME "elfNN-ia64-aix-little"
|
||
#undef TARGET_BIG_SYM
|
||
#define TARGET_BIG_SYM bfd_elfNN_ia64_aix_big_vec
|
||
#undef TARGET_BIG_NAME
|
||
#define TARGET_BIG_NAME "elfNN-ia64-aix-big"
|
||
|
||
#undef elf_backend_add_symbol_hook
|
||
#define elf_backend_add_symbol_hook elfNN_ia64_aix_add_symbol_hook
|
||
|
||
#undef bfd_elfNN_bfd_link_add_symbols
|
||
#define bfd_elfNN_bfd_link_add_symbols elfNN_ia64_aix_link_add_symbols
|
||
|
||
#define elfNN_bed elfNN_ia64_aix_bed
|
||
|
||
#include "elfNN-target.h"
|
||
|
||
/* HPUX-specific vectors. */
|
||
|
||
#undef TARGET_LITTLE_SYM
|
||
#undef TARGET_LITTLE_NAME
|
||
#undef TARGET_BIG_SYM
|
||
#define TARGET_BIG_SYM bfd_elfNN_ia64_hpux_big_vec
|
||
#undef TARGET_BIG_NAME
|
||
#define TARGET_BIG_NAME "elfNN-ia64-hpux-big"
|
||
|
||
/* We need to undo the AIX specific functions. */
|
||
|
||
#undef elf_backend_add_symbol_hook
|
||
#define elf_backend_add_symbol_hook elfNN_ia64_add_symbol_hook
|
||
|
||
#undef bfd_elfNN_bfd_link_add_symbols
|
||
#define bfd_elfNN_bfd_link_add_symbols _bfd_generic_link_add_symbols
|
||
|
||
/* 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_want_p_paddr_set_to_zero
|
||
#define elf_backend_want_p_paddr_set_to_zero 1
|
||
|
||
#undef ELF_MAXPAGESIZE
|
||
#define ELF_MAXPAGESIZE 0x1000 /* 1K */
|
||
|
||
#undef elfNN_bed
|
||
#define elfNN_bed elfNN_ia64_hpux_bed
|
||
|
||
#include "elfNN-target.h"
|
||
|
||
#undef elf_backend_want_p_paddr_set_to_zero
|