5627 lines
151 KiB
C
5627 lines
151 KiB
C
/* IA-64 support for OpenVMS
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Copyright (C) 1998-2022 Free Software Foundation, Inc.
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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 3 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., 51 Franklin Street - Fifth Floor, Boston,
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MA 02110-1301, USA. */
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#include "sysdep.h"
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#include "bfd.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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#include "objalloc.h"
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#include "hashtab.h"
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#include "elfxx-ia64.h"
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#include "vms.h"
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#include "bfdver.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. */
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typedef struct bfd_hash_entry *(*new_hash_entry_func)
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(struct bfd_hash_entry *, struct bfd_hash_table *, const char *);
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/* 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 elf64_ia64_dyn_sym_info
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{
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/* The addend for which this entry is relevant. */
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bfd_vma addend;
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bfd_vma got_offset;
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bfd_vma fptr_offset;
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bfd_vma pltoff_offset;
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bfd_vma plt_offset;
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bfd_vma plt2_offset;
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/* The symbol table entry, if any, that this was derived from. */
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struct elf_link_hash_entry *h;
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/* Used to count non-got, non-plt relocations for delayed sizing
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of relocation sections. */
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struct elf64_ia64_dyn_reloc_entry
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{
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struct elf64_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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/* 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_gotx : 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; /* A MIN_PLT entry. */
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unsigned want_plt2 : 1; /* A FULL_PLT. */
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unsigned want_pltoff : 1;
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};
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struct elf64_ia64_local_hash_entry
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{
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int id;
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unsigned int r_sym;
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/* The number of elements in elf64_ia64_dyn_sym_info array. */
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unsigned int count;
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/* The number of sorted elements in elf64_ia64_dyn_sym_info array. */
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unsigned int sorted_count;
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/* The size of elf64_ia64_dyn_sym_info array. */
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unsigned int size;
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/* The array of elf64_ia64_dyn_sym_info. */
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struct elf64_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 elf64_ia64_link_hash_entry
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{
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struct elf_link_hash_entry root;
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/* Set if this symbol is defined in a shared library.
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We can't use root.u.def.section->owner as the symbol is an absolute
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symbol. */
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bfd *shl;
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/* The number of elements in elf64_ia64_dyn_sym_info array. */
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unsigned int count;
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/* The number of sorted elements in elf64_ia64_dyn_sym_info array. */
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unsigned int sorted_count;
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/* The size of elf64_ia64_dyn_sym_info array. */
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unsigned int size;
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/* The array of elf64_ia64_dyn_sym_info. */
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struct elf64_ia64_dyn_sym_info *info;
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};
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struct elf64_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 *fptr_sec; /* Function descriptor table (or NULL). */
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asection *rel_fptr_sec; /* Dynamic relocation section for same. */
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asection *pltoff_sec; /* Private descriptors for plt (or NULL). */
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asection *fixups_sec; /* Fixups section. */
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asection *transfer_sec; /* Transfer vector section. */
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asection *note_sec; /* .note section. */
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/* There are maybe R_IA64_GPREL22 relocations, including those
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optimized from R_IA64_LTOFF22X, against non-SHF_IA_64_SHORT
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sections. We need to record those sections so that we can choose
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a proper GP to cover all R_IA64_GPREL22 relocations. */
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asection *max_short_sec; /* Maximum short output section. */
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bfd_vma max_short_offset; /* Maximum short offset. */
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asection *min_short_sec; /* Minimum short output section. */
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bfd_vma min_short_offset; /* Minimum short offset. */
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htab_t loc_hash_table;
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void *loc_hash_memory;
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};
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struct elf64_ia64_allocate_data
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{
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struct bfd_link_info *info;
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bfd_size_type ofs;
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};
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#define elf64_ia64_hash_table(p) \
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((is_elf_hash_table ((p)->hash) \
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&& elf_hash_table_id (elf_hash_table (p)) == IA64_ELF_DATA) \
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? (struct elf64_ia64_link_hash_table *) (p)->hash : NULL)
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struct elf64_ia64_vms_obj_tdata
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{
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struct elf_obj_tdata root;
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/* Ident for shared library. */
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uint64_t ident;
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/* Used only during link: offset in the .fixups section for this bfd. */
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bfd_vma fixups_off;
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/* Max number of shared libraries. */
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unsigned int needed_count;
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};
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#define elf_ia64_vms_tdata(abfd) \
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((struct elf64_ia64_vms_obj_tdata *)((abfd)->tdata.any))
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#define elf_ia64_vms_ident(abfd) (elf_ia64_vms_tdata(abfd)->ident)
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struct elf64_vms_transfer
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{
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unsigned char size[4];
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unsigned char spare[4];
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unsigned char tfradr1[8];
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unsigned char tfradr2[8];
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unsigned char tfradr3[8];
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unsigned char tfradr4[8];
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unsigned char tfradr5[8];
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/* Local function descriptor for tfr3. */
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unsigned char tfr3_func[8];
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unsigned char tfr3_gp[8];
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};
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typedef struct
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{
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Elf64_External_Ehdr ehdr;
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unsigned char vms_needed_count[8];
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} Elf64_External_VMS_Ehdr;
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static struct elf64_ia64_dyn_sym_info * get_dyn_sym_info
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(struct elf64_ia64_link_hash_table *,
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struct elf_link_hash_entry *,
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bfd *, const Elf_Internal_Rela *, bool);
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static bool elf64_ia64_dynamic_symbol_p
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(struct elf_link_hash_entry *);
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static bool elf64_ia64_choose_gp
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(bfd *, struct bfd_link_info *, bool);
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static void elf64_ia64_dyn_sym_traverse
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(struct elf64_ia64_link_hash_table *,
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bool (*) (struct elf64_ia64_dyn_sym_info *, void *),
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void *);
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static bool allocate_global_data_got
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(struct elf64_ia64_dyn_sym_info *, void *);
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static bool allocate_global_fptr_got
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(struct elf64_ia64_dyn_sym_info *, void *);
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static bool allocate_local_got
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(struct elf64_ia64_dyn_sym_info *, void *);
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static bool allocate_dynrel_entries
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(struct elf64_ia64_dyn_sym_info *, void *);
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static asection *get_pltoff
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(bfd *, struct elf64_ia64_link_hash_table *);
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static asection *get_got
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(bfd *, struct elf64_ia64_link_hash_table *);
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/* Given a ELF reloc, return the matching HOWTO structure. */
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static bool
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elf64_ia64_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED,
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arelent *bfd_reloc,
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Elf_Internal_Rela *elf_reloc)
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{
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unsigned int r_type = ELF32_R_TYPE (elf_reloc->r_info);
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bfd_reloc->howto = ia64_elf_lookup_howto (r_type);
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if (bfd_reloc->howto == NULL)
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{
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/* xgettext:c-format */
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_bfd_error_handler (_("%pB: unsupported relocation type %#x"),
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abfd, r_type);
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bfd_set_error (bfd_error_bad_value);
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return false;
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}
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return true;
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}
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#define PLT_FULL_ENTRY_SIZE (2 * 16)
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static const bfd_byte plt_full_entry[PLT_FULL_ENTRY_SIZE] =
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{
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0x0b, 0x78, 0x00, 0x02, 0x00, 0x24, /* [MMI] addl r15=0,r1;; */
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0x00, 0x41, 0x3c, 0x70, 0x29, 0xc0, /* ld8.acq r16=[r15],8*/
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0x01, 0x08, 0x00, 0x84, /* mov r14=r1;; */
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0x11, 0x08, 0x00, 0x1e, 0x18, 0x10, /* [MIB] ld8 r1=[r15] */
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0x60, 0x80, 0x04, 0x80, 0x03, 0x00, /* mov b6=r16 */
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0x60, 0x00, 0x80, 0x00 /* br.few b6;; */
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};
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static const bfd_byte oor_brl[16] =
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{
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0x05, 0x00, 0x00, 0x00, 0x01, 0x00, /* [MLX] nop.m 0 */
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* brl.sptk.few tgt;;*/
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0x00, 0x00, 0x00, 0xc0
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};
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/* These functions do relaxation for IA-64 ELF. */
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/* Rename some of the generic section flags to better document how they
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are used here. */
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#define skip_relax_pass_0 sec_flg0
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#define skip_relax_pass_1 sec_flg1
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static void
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elf64_ia64_update_short_info (asection *sec, bfd_vma offset,
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struct elf64_ia64_link_hash_table *ia64_info)
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{
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/* Skip ABS and SHF_IA_64_SHORT sections. */
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if (sec == bfd_abs_section_ptr
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|| (sec->flags & SEC_SMALL_DATA) != 0)
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return;
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if (!ia64_info->min_short_sec)
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{
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ia64_info->max_short_sec = sec;
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ia64_info->max_short_offset = offset;
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ia64_info->min_short_sec = sec;
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ia64_info->min_short_offset = offset;
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}
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else if (sec == ia64_info->max_short_sec
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&& offset > ia64_info->max_short_offset)
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ia64_info->max_short_offset = offset;
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else if (sec == ia64_info->min_short_sec
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&& offset < ia64_info->min_short_offset)
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ia64_info->min_short_offset = offset;
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else if (sec->output_section->vma
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> ia64_info->max_short_sec->vma)
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{
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ia64_info->max_short_sec = sec;
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ia64_info->max_short_offset = offset;
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}
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else if (sec->output_section->vma
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< ia64_info->min_short_sec->vma)
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{
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ia64_info->min_short_sec = sec;
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ia64_info->min_short_offset = offset;
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}
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}
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/* Use a two passes algorithm. In the first pass, branches are relaxed
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(which may increase the size of the section). In the second pass,
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the other relaxations are done.
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*/
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static bool
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elf64_ia64_relax_section (bfd *abfd, asection *sec,
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struct bfd_link_info *link_info,
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bool *again)
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{
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struct one_fixup
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{
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struct one_fixup *next;
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asection *tsec;
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bfd_vma toff;
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bfd_vma trampoff;
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};
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Elf_Internal_Shdr *symtab_hdr;
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Elf_Internal_Rela *internal_relocs;
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Elf_Internal_Rela *irel, *irelend;
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bfd_byte *contents;
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Elf_Internal_Sym *isymbuf = NULL;
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struct elf64_ia64_link_hash_table *ia64_info;
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struct one_fixup *fixups = NULL;
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bool changed_contents = false;
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bool changed_relocs = false;
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bool skip_relax_pass_0 = true;
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bool skip_relax_pass_1 = true;
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bfd_vma gp = 0;
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/* Assume we're not going to change any sizes, and we'll only need
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one pass. */
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*again = false;
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if (bfd_link_relocatable (link_info))
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(*link_info->callbacks->einfo)
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(_("%P%F: --relax and -r may not be used together\n"));
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/* Don't even try to relax for non-ELF outputs. */
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if (!is_elf_hash_table (link_info->hash))
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return false;
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/* Nothing to do if there are no relocations or there is no need for
|
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the current pass. */
|
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if ((sec->flags & SEC_RELOC) == 0
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|| sec->reloc_count == 0
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|| (link_info->relax_pass == 0 && sec->skip_relax_pass_0)
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|| (link_info->relax_pass == 1 && sec->skip_relax_pass_1))
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return true;
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ia64_info = elf64_ia64_hash_table (link_info);
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if (ia64_info == NULL)
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return false;
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symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
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|
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/* Load the relocations for this section. */
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internal_relocs = (_bfd_elf_link_read_relocs
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(abfd, sec, NULL, (Elf_Internal_Rela *) NULL,
|
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link_info->keep_memory));
|
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if (internal_relocs == NULL)
|
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return false;
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|
|
irelend = internal_relocs + sec->reloc_count;
|
|
|
|
/* Get the section contents. */
|
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if (elf_section_data (sec)->this_hdr.contents != NULL)
|
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contents = elf_section_data (sec)->this_hdr.contents;
|
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else
|
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{
|
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if (!bfd_malloc_and_get_section (abfd, sec, &contents))
|
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goto error_return;
|
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}
|
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|
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for (irel = internal_relocs; irel < irelend; irel++)
|
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{
|
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unsigned long r_type = ELF64_R_TYPE (irel->r_info);
|
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bfd_vma symaddr, reladdr, trampoff, toff, roff;
|
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asection *tsec;
|
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struct one_fixup *f;
|
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bfd_size_type amt;
|
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bool is_branch;
|
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struct elf64_ia64_dyn_sym_info *dyn_i;
|
|
|
|
switch (r_type)
|
|
{
|
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case R_IA64_PCREL21B:
|
|
case R_IA64_PCREL21BI:
|
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case R_IA64_PCREL21M:
|
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case R_IA64_PCREL21F:
|
|
/* In pass 1, all br relaxations are done. We can skip it. */
|
|
if (link_info->relax_pass == 1)
|
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continue;
|
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skip_relax_pass_0 = false;
|
|
is_branch = true;
|
|
break;
|
|
|
|
case R_IA64_PCREL60B:
|
|
/* We can't optimize brl to br in pass 0 since br relaxations
|
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will increase the code size. Defer it to pass 1. */
|
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if (link_info->relax_pass == 0)
|
|
{
|
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skip_relax_pass_1 = false;
|
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continue;
|
|
}
|
|
is_branch = true;
|
|
break;
|
|
|
|
case R_IA64_GPREL22:
|
|
/* Update max_short_sec/min_short_sec. */
|
|
|
|
case R_IA64_LTOFF22X:
|
|
case R_IA64_LDXMOV:
|
|
/* We can't relax ldx/mov in pass 0 since br relaxations will
|
|
increase the code size. Defer it to pass 1. */
|
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if (link_info->relax_pass == 0)
|
|
{
|
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skip_relax_pass_1 = false;
|
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continue;
|
|
}
|
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is_branch = false;
|
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break;
|
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|
|
default:
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continue;
|
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}
|
|
|
|
/* Get the value of the symbol referred to by the reloc. */
|
|
if (ELF64_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 anything with undefined symbols. */
|
|
else if (isym->st_shndx == SHN_ABS)
|
|
tsec = bfd_abs_section_ptr;
|
|
else if (isym->st_shndx == SHN_COMMON)
|
|
tsec = bfd_com_section_ptr;
|
|
else if (isym->st_shndx == SHN_IA_64_ANSI_COMMON)
|
|
tsec = bfd_com_section_ptr;
|
|
else
|
|
tsec = bfd_section_from_elf_index (abfd, isym->st_shndx);
|
|
|
|
toff = isym->st_value;
|
|
dyn_i = get_dyn_sym_info (ia64_info, NULL, abfd, irel, false);
|
|
}
|
|
else
|
|
{
|
|
unsigned long indx;
|
|
struct elf_link_hash_entry *h;
|
|
|
|
indx = ELF64_R_SYM (irel->r_info) - symtab_hdr->sh_info;
|
|
h = elf_sym_hashes (abfd)[indx];
|
|
BFD_ASSERT (h != NULL);
|
|
|
|
while (h->root.type == bfd_link_hash_indirect
|
|
|| h->root.type == bfd_link_hash_warning)
|
|
h = (struct elf_link_hash_entry *) h->root.u.i.link;
|
|
|
|
dyn_i = get_dyn_sym_info (ia64_info, h, abfd, irel, false);
|
|
|
|
/* For branches to dynamic symbols, we're interested instead
|
|
in a branch to the PLT entry. */
|
|
if (is_branch && dyn_i && dyn_i->want_plt2)
|
|
{
|
|
/* Internal branches shouldn't be sent to the PLT.
|
|
Leave this for now and we'll give an error later. */
|
|
if (r_type != R_IA64_PCREL21B)
|
|
continue;
|
|
|
|
tsec = ia64_info->root.splt;
|
|
toff = dyn_i->plt2_offset;
|
|
BFD_ASSERT (irel->r_addend == 0);
|
|
}
|
|
|
|
/* Can't do anything else with dynamic symbols. */
|
|
else if (elf64_ia64_dynamic_symbol_p (h))
|
|
continue;
|
|
|
|
else
|
|
{
|
|
/* We can't do anything with undefined symbols. */
|
|
if (h->root.type == bfd_link_hash_undefined
|
|
|| h->root.type == bfd_link_hash_undefweak)
|
|
continue;
|
|
|
|
tsec = h->root.u.def.section;
|
|
toff = h->root.u.def.value;
|
|
}
|
|
}
|
|
|
|
toff += irel->r_addend;
|
|
|
|
symaddr = tsec->output_section->vma + tsec->output_offset + toff;
|
|
|
|
roff = irel->r_offset;
|
|
|
|
if (is_branch)
|
|
{
|
|
bfd_signed_vma offset;
|
|
|
|
reladdr = (sec->output_section->vma
|
|
+ sec->output_offset
|
|
+ roff) & (bfd_vma) -4;
|
|
|
|
/* The .plt section is aligned at 32byte and the .text section
|
|
is aligned at 64byte. The .text section is right after the
|
|
.plt section. After the first relaxation pass, linker may
|
|
increase the gap between the .plt and .text sections up
|
|
to 32byte. We assume linker will always insert 32byte
|
|
between the .plt and .text sections after the first
|
|
relaxation pass. */
|
|
if (tsec == ia64_info->root.splt)
|
|
offset = -0x1000000 + 32;
|
|
else
|
|
offset = -0x1000000;
|
|
|
|
/* If the branch is in range, no need to do anything. */
|
|
if ((bfd_signed_vma) (symaddr - reladdr) >= offset
|
|
&& (bfd_signed_vma) (symaddr - reladdr) <= 0x0FFFFF0)
|
|
{
|
|
/* If the 60-bit branch is in 21-bit range, optimize it. */
|
|
if (r_type == R_IA64_PCREL60B)
|
|
{
|
|
ia64_elf_relax_brl (contents, roff);
|
|
|
|
irel->r_info = ELF64_R_INFO (ELF64_R_SYM (irel->r_info),
|
|
R_IA64_PCREL21B);
|
|
|
|
/* If the original relocation offset points to slot
|
|
1, change it to slot 2. */
|
|
if ((irel->r_offset & 3) == 1)
|
|
irel->r_offset += 1;
|
|
}
|
|
|
|
continue;
|
|
}
|
|
else if (r_type == R_IA64_PCREL60B)
|
|
continue;
|
|
else if (ia64_elf_relax_br (contents, roff))
|
|
{
|
|
irel->r_info = ELF64_R_INFO (ELF64_R_SYM (irel->r_info),
|
|
R_IA64_PCREL60B);
|
|
|
|
/* Make the relocation offset point to slot 1. */
|
|
irel->r_offset = (irel->r_offset & ~((bfd_vma) 0x3)) + 1;
|
|
continue;
|
|
}
|
|
|
|
/* We can't put a trampoline in a .init/.fini section. Issue
|
|
an error. */
|
|
if (strcmp (sec->output_section->name, ".init") == 0
|
|
|| strcmp (sec->output_section->name, ".fini") == 0)
|
|
{
|
|
_bfd_error_handler
|
|
/* xgettext:c-format */
|
|
(_("%pB: can't relax br at %#" PRIx64 " in section `%pA';"
|
|
" please use brl or indirect branch"),
|
|
sec->owner, (uint64_t) roff, sec);
|
|
bfd_set_error (bfd_error_bad_value);
|
|
goto error_return;
|
|
}
|
|
|
|
/* If the branch and target are in the same section, you've
|
|
got one honking big section and we can't help you unless
|
|
you are branching backwards. You'll get an error message
|
|
later. */
|
|
if (tsec == sec && toff > roff)
|
|
continue;
|
|
|
|
/* Look for an existing fixup to this address. */
|
|
for (f = fixups; f ; f = f->next)
|
|
if (f->tsec == tsec && f->toff == toff)
|
|
break;
|
|
|
|
if (f == NULL)
|
|
{
|
|
/* Two alternatives: If it's a branch to a PLT entry, we can
|
|
make a copy of the FULL_PLT entry. Otherwise, we'll have
|
|
to use a `brl' insn to get where we're going. */
|
|
|
|
size_t size;
|
|
|
|
if (tsec == ia64_info->root.splt)
|
|
size = sizeof (plt_full_entry);
|
|
else
|
|
size = sizeof (oor_brl);
|
|
|
|
/* Resize the current section to make room for the new branch. */
|
|
trampoff = (sec->size + 15) & (bfd_vma) -16;
|
|
|
|
/* If trampoline is out of range, there is nothing we
|
|
can do. */
|
|
offset = trampoff - (roff & (bfd_vma) -4);
|
|
if (offset < -0x1000000 || offset > 0x0FFFFF0)
|
|
continue;
|
|
|
|
amt = trampoff + size;
|
|
contents = (bfd_byte *) bfd_realloc (contents, amt);
|
|
if (contents == NULL)
|
|
goto error_return;
|
|
sec->size = amt;
|
|
|
|
if (tsec == ia64_info->root.splt)
|
|
{
|
|
memcpy (contents + trampoff, plt_full_entry, size);
|
|
|
|
/* Hijack the old relocation for use as the PLTOFF reloc. */
|
|
irel->r_info = ELF64_R_INFO (ELF64_R_SYM (irel->r_info),
|
|
R_IA64_PLTOFF22);
|
|
irel->r_offset = trampoff;
|
|
}
|
|
else
|
|
{
|
|
memcpy (contents + trampoff, oor_brl, size);
|
|
irel->r_info = ELF64_R_INFO (ELF64_R_SYM (irel->r_info),
|
|
R_IA64_PCREL60B);
|
|
irel->r_offset = trampoff + 2;
|
|
}
|
|
|
|
/* Record the fixup so we don't do it again this section. */
|
|
f = (struct one_fixup *)
|
|
bfd_malloc ((bfd_size_type) sizeof (*f));
|
|
f->next = fixups;
|
|
f->tsec = tsec;
|
|
f->toff = toff;
|
|
f->trampoff = trampoff;
|
|
fixups = f;
|
|
}
|
|
else
|
|
{
|
|
/* If trampoline is out of range, there is nothing we
|
|
can do. */
|
|
offset = f->trampoff - (roff & (bfd_vma) -4);
|
|
if (offset < -0x1000000 || offset > 0x0FFFFF0)
|
|
continue;
|
|
|
|
/* Nop out the reloc, since we're finalizing things here. */
|
|
irel->r_info = ELF64_R_INFO (0, R_IA64_NONE);
|
|
}
|
|
|
|
/* Fix up the existing branch to hit the trampoline. */
|
|
if (ia64_elf_install_value (contents + roff, offset, r_type)
|
|
!= bfd_reloc_ok)
|
|
goto error_return;
|
|
|
|
changed_contents = true;
|
|
changed_relocs = true;
|
|
}
|
|
else
|
|
{
|
|
/* Fetch the gp. */
|
|
if (gp == 0)
|
|
{
|
|
bfd *obfd = sec->output_section->owner;
|
|
gp = _bfd_get_gp_value (obfd);
|
|
if (gp == 0)
|
|
{
|
|
if (!elf64_ia64_choose_gp (obfd, link_info, false))
|
|
goto error_return;
|
|
gp = _bfd_get_gp_value (obfd);
|
|
}
|
|
}
|
|
|
|
/* If the data is out of range, do nothing. */
|
|
if ((bfd_signed_vma) (symaddr - gp) >= 0x200000
|
|
||(bfd_signed_vma) (symaddr - gp) < -0x200000)
|
|
continue;
|
|
|
|
if (r_type == R_IA64_GPREL22)
|
|
elf64_ia64_update_short_info (tsec->output_section,
|
|
tsec->output_offset + toff,
|
|
ia64_info);
|
|
else if (r_type == R_IA64_LTOFF22X)
|
|
{
|
|
/* Can't deal yet correctly with ABS symbols. */
|
|
if (bfd_is_abs_section (tsec))
|
|
continue;
|
|
|
|
irel->r_info = ELF64_R_INFO (ELF64_R_SYM (irel->r_info),
|
|
R_IA64_GPREL22);
|
|
changed_relocs = true;
|
|
|
|
elf64_ia64_update_short_info (tsec->output_section,
|
|
tsec->output_offset + toff,
|
|
ia64_info);
|
|
}
|
|
else
|
|
{
|
|
ia64_elf_relax_ldxmov (contents, roff);
|
|
irel->r_info = ELF64_R_INFO (0, R_IA64_NONE);
|
|
changed_contents = true;
|
|
changed_relocs = true;
|
|
}
|
|
}
|
|
}
|
|
|
|
/* ??? If we created fixups, this may push the code segment large
|
|
enough that the data segment moves, which will change the GP.
|
|
Reset the GP so that we re-calculate next round. We need to
|
|
do this at the _beginning_ of the next round; now will not do. */
|
|
|
|
/* Clean up and go home. */
|
|
while (fixups)
|
|
{
|
|
struct one_fixup *f = fixups;
|
|
fixups = fixups->next;
|
|
free (f);
|
|
}
|
|
|
|
if (isymbuf != NULL
|
|
&& symtab_hdr->contents != (unsigned char *) isymbuf)
|
|
{
|
|
if (! link_info->keep_memory)
|
|
free (isymbuf);
|
|
else
|
|
{
|
|
/* Cache the symbols for elf_link_input_bfd. */
|
|
symtab_hdr->contents = (unsigned char *) isymbuf;
|
|
}
|
|
}
|
|
|
|
if (contents != NULL
|
|
&& elf_section_data (sec)->this_hdr.contents != contents)
|
|
{
|
|
if (!changed_contents && !link_info->keep_memory)
|
|
free (contents);
|
|
else
|
|
{
|
|
/* Cache the section contents for elf_link_input_bfd. */
|
|
elf_section_data (sec)->this_hdr.contents = contents;
|
|
}
|
|
}
|
|
|
|
if (elf_section_data (sec)->relocs != internal_relocs)
|
|
{
|
|
if (!changed_relocs)
|
|
free (internal_relocs);
|
|
else
|
|
elf_section_data (sec)->relocs = internal_relocs;
|
|
}
|
|
|
|
if (link_info->relax_pass == 0)
|
|
{
|
|
/* Pass 0 is only needed to relax br. */
|
|
sec->skip_relax_pass_0 = skip_relax_pass_0;
|
|
sec->skip_relax_pass_1 = skip_relax_pass_1;
|
|
}
|
|
|
|
*again = changed_contents || changed_relocs;
|
|
return true;
|
|
|
|
error_return:
|
|
if ((unsigned char *) isymbuf != symtab_hdr->contents)
|
|
free (isymbuf);
|
|
if (elf_section_data (sec)->this_hdr.contents != contents)
|
|
free (contents);
|
|
if (elf_section_data (sec)->relocs != internal_relocs)
|
|
free (internal_relocs);
|
|
return false;
|
|
}
|
|
#undef skip_relax_pass_0
|
|
#undef skip_relax_pass_1
|
|
|
|
/* Return TRUE if NAME is an unwind table section name. */
|
|
|
|
static inline bool
|
|
is_unwind_section_name (bfd *abfd ATTRIBUTE_UNUSED, const char *name)
|
|
{
|
|
return ((startswith (name, ELF_STRING_ia64_unwind)
|
|
&& ! startswith (name, ELF_STRING_ia64_unwind_info))
|
|
|| startswith (name, ELF_STRING_ia64_unwind_once));
|
|
}
|
|
|
|
|
|
/* 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 bool
|
|
elf64_ia64_section_flags (const Elf_Internal_Shdr *hdr)
|
|
{
|
|
if (hdr->sh_flags & SHF_IA_64_SHORT)
|
|
hdr->bfd_section->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 bool
|
|
elf64_ia64_fake_sections (bfd *abfd, Elf_Internal_Shdr *hdr,
|
|
asection *sec)
|
|
{
|
|
const char *name;
|
|
|
|
name = bfd_section_name (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 elf64_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;
|
|
|
|
if (sec->flags & SEC_SMALL_DATA)
|
|
hdr->sh_flags |= SHF_IA_64_SHORT;
|
|
|
|
return 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 bool
|
|
elf64_ia64_add_symbol_hook (bfd *abfd,
|
|
struct bfd_link_info *info,
|
|
Elf_Internal_Sym *sym,
|
|
const char **namep ATTRIBUTE_UNUSED,
|
|
flagword *flagsp ATTRIBUTE_UNUSED,
|
|
asection **secp,
|
|
bfd_vma *valp)
|
|
{
|
|
if (sym->st_shndx == SHN_COMMON
|
|
&& !bfd_link_relocatable (info)
|
|
&& sym->st_size <= elf_gp_size (abfd))
|
|
{
|
|
/* Common symbols less than or equal to -G nn bytes are
|
|
automatically put into .sbss. */
|
|
|
|
asection *scomm = bfd_get_section_by_name (abfd, ".scommon");
|
|
|
|
if (scomm == NULL)
|
|
{
|
|
scomm = bfd_make_section_with_flags (abfd, ".scommon",
|
|
(SEC_ALLOC
|
|
| SEC_IS_COMMON
|
|
| SEC_SMALL_DATA
|
|
| SEC_LINKER_CREATED));
|
|
if (scomm == NULL)
|
|
return false;
|
|
}
|
|
|
|
*secp = scomm;
|
|
*valp = sym->st_size;
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
/* According to the Tahoe assembler spec, all labels starting with a
|
|
'.' are local. */
|
|
|
|
static bool
|
|
elf64_ia64_is_local_label_name (bfd *abfd ATTRIBUTE_UNUSED,
|
|
const char *name)
|
|
{
|
|
return name[0] == '.';
|
|
}
|
|
|
|
/* Should we do dynamic things to this symbol? */
|
|
|
|
static bool
|
|
elf64_ia64_dynamic_symbol_p (struct elf_link_hash_entry *h)
|
|
{
|
|
return h != NULL && h->def_dynamic;
|
|
}
|
|
|
|
static struct bfd_hash_entry*
|
|
elf64_ia64_new_elf_hash_entry (struct bfd_hash_entry *entry,
|
|
struct bfd_hash_table *table,
|
|
const char *string)
|
|
{
|
|
struct elf64_ia64_link_hash_entry *ret;
|
|
ret = (struct elf64_ia64_link_hash_entry *) entry;
|
|
|
|
/* Allocate the structure if it has not already been allocated by a
|
|
subclass. */
|
|
if (!ret)
|
|
ret = bfd_hash_allocate (table, sizeof (*ret));
|
|
|
|
if (!ret)
|
|
return 0;
|
|
|
|
/* Call the allocation method of the superclass. */
|
|
ret = ((struct elf64_ia64_link_hash_entry *)
|
|
_bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret,
|
|
table, string));
|
|
|
|
ret->info = NULL;
|
|
ret->count = 0;
|
|
ret->sorted_count = 0;
|
|
ret->size = 0;
|
|
return (struct bfd_hash_entry *) ret;
|
|
}
|
|
|
|
static void
|
|
elf64_ia64_hash_hide_symbol (struct bfd_link_info *info,
|
|
struct elf_link_hash_entry *xh,
|
|
bool force_local)
|
|
{
|
|
struct elf64_ia64_link_hash_entry *h;
|
|
struct elf64_ia64_dyn_sym_info *dyn_i;
|
|
unsigned int count;
|
|
|
|
h = (struct elf64_ia64_link_hash_entry *)xh;
|
|
|
|
_bfd_elf_link_hash_hide_symbol (info, &h->root, force_local);
|
|
|
|
for (count = h->count, dyn_i = h->info;
|
|
count != 0;
|
|
count--, dyn_i++)
|
|
{
|
|
dyn_i->want_plt2 = 0;
|
|
dyn_i->want_plt = 0;
|
|
}
|
|
}
|
|
|
|
/* Compute a hash of a local hash entry. */
|
|
|
|
static hashval_t
|
|
elf64_ia64_local_htab_hash (const void *ptr)
|
|
{
|
|
struct elf64_ia64_local_hash_entry *entry
|
|
= (struct elf64_ia64_local_hash_entry *) ptr;
|
|
|
|
return ELF_LOCAL_SYMBOL_HASH (entry->id, entry->r_sym);
|
|
}
|
|
|
|
/* Compare local hash entries. */
|
|
|
|
static int
|
|
elf64_ia64_local_htab_eq (const void *ptr1, const void *ptr2)
|
|
{
|
|
struct elf64_ia64_local_hash_entry *entry1
|
|
= (struct elf64_ia64_local_hash_entry *) ptr1;
|
|
struct elf64_ia64_local_hash_entry *entry2
|
|
= (struct elf64_ia64_local_hash_entry *) ptr2;
|
|
|
|
return entry1->id == entry2->id && entry1->r_sym == entry2->r_sym;
|
|
}
|
|
|
|
/* Free the global elf64_ia64_dyn_sym_info array. */
|
|
|
|
static bool
|
|
elf64_ia64_global_dyn_info_free (struct elf_link_hash_entry *xentry,
|
|
void * unused ATTRIBUTE_UNUSED)
|
|
{
|
|
struct elf64_ia64_link_hash_entry *entry
|
|
= (struct elf64_ia64_link_hash_entry *) xentry;
|
|
|
|
if (entry->root.root.type == bfd_link_hash_warning)
|
|
entry = (struct elf64_ia64_link_hash_entry *) entry->root.root.u.i.link;
|
|
|
|
free (entry->info);
|
|
entry->info = NULL;
|
|
entry->count = 0;
|
|
entry->sorted_count = 0;
|
|
entry->size = 0;
|
|
|
|
return true;
|
|
}
|
|
|
|
/* Free the local elf64_ia64_dyn_sym_info array. */
|
|
|
|
static int
|
|
elf64_ia64_local_dyn_info_free (void **slot,
|
|
void * unused ATTRIBUTE_UNUSED)
|
|
{
|
|
struct elf64_ia64_local_hash_entry *entry
|
|
= (struct elf64_ia64_local_hash_entry *) *slot;
|
|
|
|
free (entry->info);
|
|
entry->info = NULL;
|
|
entry->count = 0;
|
|
entry->sorted_count = 0;
|
|
entry->size = 0;
|
|
|
|
return true;
|
|
}
|
|
|
|
/* Destroy IA-64 linker hash table. */
|
|
|
|
static void
|
|
elf64_ia64_link_hash_table_free (bfd *obfd)
|
|
{
|
|
struct elf64_ia64_link_hash_table *ia64_info
|
|
= (struct elf64_ia64_link_hash_table *) obfd->link.hash;
|
|
if (ia64_info->loc_hash_table)
|
|
{
|
|
htab_traverse (ia64_info->loc_hash_table,
|
|
elf64_ia64_local_dyn_info_free, NULL);
|
|
htab_delete (ia64_info->loc_hash_table);
|
|
}
|
|
if (ia64_info->loc_hash_memory)
|
|
objalloc_free ((struct objalloc *) ia64_info->loc_hash_memory);
|
|
elf_link_hash_traverse (&ia64_info->root,
|
|
elf64_ia64_global_dyn_info_free, NULL);
|
|
_bfd_elf_link_hash_table_free (obfd);
|
|
}
|
|
|
|
/* Create the derived linker hash table. The IA-64 ELF port uses this
|
|
derived hash table to keep information specific to the IA-64 ElF
|
|
linker (without using static variables). */
|
|
|
|
static struct bfd_link_hash_table *
|
|
elf64_ia64_hash_table_create (bfd *abfd)
|
|
{
|
|
struct elf64_ia64_link_hash_table *ret;
|
|
|
|
ret = bfd_zmalloc ((bfd_size_type) sizeof (*ret));
|
|
if (!ret)
|
|
return NULL;
|
|
|
|
if (!_bfd_elf_link_hash_table_init (&ret->root, abfd,
|
|
elf64_ia64_new_elf_hash_entry,
|
|
sizeof (struct elf64_ia64_link_hash_entry),
|
|
IA64_ELF_DATA))
|
|
{
|
|
free (ret);
|
|
return NULL;
|
|
}
|
|
|
|
ret->loc_hash_table = htab_try_create (1024, elf64_ia64_local_htab_hash,
|
|
elf64_ia64_local_htab_eq, NULL);
|
|
ret->loc_hash_memory = objalloc_create ();
|
|
if (!ret->loc_hash_table || !ret->loc_hash_memory)
|
|
{
|
|
elf64_ia64_link_hash_table_free (abfd);
|
|
return NULL;
|
|
}
|
|
ret->root.root.hash_table_free = elf64_ia64_link_hash_table_free;
|
|
|
|
return &ret->root.root;
|
|
}
|
|
|
|
/* Traverse both local and global hash tables. */
|
|
|
|
struct elf64_ia64_dyn_sym_traverse_data
|
|
{
|
|
bool (*func) (struct elf64_ia64_dyn_sym_info *, void *);
|
|
void * data;
|
|
};
|
|
|
|
static bool
|
|
elf64_ia64_global_dyn_sym_thunk (struct elf_link_hash_entry *xentry,
|
|
void * xdata)
|
|
{
|
|
struct elf64_ia64_link_hash_entry *entry
|
|
= (struct elf64_ia64_link_hash_entry *) xentry;
|
|
struct elf64_ia64_dyn_sym_traverse_data *data
|
|
= (struct elf64_ia64_dyn_sym_traverse_data *) xdata;
|
|
struct elf64_ia64_dyn_sym_info *dyn_i;
|
|
unsigned int count;
|
|
|
|
if (entry->root.root.type == bfd_link_hash_warning)
|
|
entry = (struct elf64_ia64_link_hash_entry *) entry->root.root.u.i.link;
|
|
|
|
for (count = entry->count, dyn_i = entry->info;
|
|
count != 0;
|
|
count--, dyn_i++)
|
|
if (! (*data->func) (dyn_i, data->data))
|
|
return false;
|
|
return true;
|
|
}
|
|
|
|
static int
|
|
elf64_ia64_local_dyn_sym_thunk (void **slot, void * xdata)
|
|
{
|
|
struct elf64_ia64_local_hash_entry *entry
|
|
= (struct elf64_ia64_local_hash_entry *) *slot;
|
|
struct elf64_ia64_dyn_sym_traverse_data *data
|
|
= (struct elf64_ia64_dyn_sym_traverse_data *) xdata;
|
|
struct elf64_ia64_dyn_sym_info *dyn_i;
|
|
unsigned int count;
|
|
|
|
for (count = entry->count, dyn_i = entry->info;
|
|
count != 0;
|
|
count--, dyn_i++)
|
|
if (! (*data->func) (dyn_i, data->data))
|
|
return false;
|
|
return true;
|
|
}
|
|
|
|
static void
|
|
elf64_ia64_dyn_sym_traverse (struct elf64_ia64_link_hash_table *ia64_info,
|
|
bool (*func) (struct elf64_ia64_dyn_sym_info *, void *),
|
|
void * data)
|
|
{
|
|
struct elf64_ia64_dyn_sym_traverse_data xdata;
|
|
|
|
xdata.func = func;
|
|
xdata.data = data;
|
|
|
|
elf_link_hash_traverse (&ia64_info->root,
|
|
elf64_ia64_global_dyn_sym_thunk, &xdata);
|
|
htab_traverse (ia64_info->loc_hash_table,
|
|
elf64_ia64_local_dyn_sym_thunk, &xdata);
|
|
}
|
|
|
|
#define NOTE_NAME "IPF/VMS"
|
|
|
|
static bool
|
|
create_ia64_vms_notes (bfd *abfd, struct bfd_link_info *info,
|
|
unsigned int time_hi, unsigned int time_lo)
|
|
{
|
|
#define NBR_NOTES 7
|
|
Elf_Internal_Note notes[NBR_NOTES];
|
|
char *module_name;
|
|
int module_name_len;
|
|
unsigned char cur_time[8];
|
|
Elf64_External_VMS_ORIG_DYN_Note *orig_dyn;
|
|
unsigned int orig_dyn_size;
|
|
unsigned int note_size;
|
|
int i;
|
|
unsigned char *noteptr;
|
|
unsigned char *note_contents;
|
|
struct elf64_ia64_link_hash_table *ia64_info;
|
|
|
|
ia64_info = elf64_ia64_hash_table (info);
|
|
|
|
module_name = vms_get_module_name (bfd_get_filename (abfd), true);
|
|
module_name_len = strlen (module_name) + 1;
|
|
|
|
bfd_putl32 (time_lo, cur_time + 0);
|
|
bfd_putl32 (time_hi, cur_time + 4);
|
|
|
|
/* Note 0: IMGNAM. */
|
|
notes[0].type = NT_VMS_IMGNAM;
|
|
notes[0].descdata = module_name;
|
|
notes[0].descsz = module_name_len;
|
|
|
|
/* Note 1: GSTNAM. */
|
|
notes[1].type = NT_VMS_GSTNAM;
|
|
notes[1].descdata = module_name;
|
|
notes[1].descsz = module_name_len;
|
|
|
|
/* Note 2: IMGID. */
|
|
#define IMG_ID "V1.0"
|
|
notes[2].type = NT_VMS_IMGID;
|
|
notes[2].descdata = IMG_ID;
|
|
notes[2].descsz = sizeof (IMG_ID);
|
|
|
|
/* Note 3: Linktime. */
|
|
notes[3].type = NT_VMS_LINKTIME;
|
|
notes[3].descdata = (char *)cur_time;
|
|
notes[3].descsz = sizeof (cur_time);
|
|
|
|
/* Note 4: Linker id. */
|
|
notes[4].type = NT_VMS_LINKID;
|
|
notes[4].descdata = "GNU ld " BFD_VERSION_STRING;
|
|
notes[4].descsz = strlen (notes[4].descdata) + 1;
|
|
|
|
/* Note 5: Original dyn. */
|
|
orig_dyn_size = (sizeof (*orig_dyn) + sizeof (IMG_ID) - 1 + 7) & ~7;
|
|
orig_dyn = bfd_zalloc (abfd, orig_dyn_size);
|
|
if (orig_dyn == NULL)
|
|
return false;
|
|
bfd_putl32 (1, orig_dyn->major_id);
|
|
bfd_putl32 (3, orig_dyn->minor_id);
|
|
memcpy (orig_dyn->manipulation_date, cur_time, sizeof (cur_time));
|
|
bfd_putl64 (VMS_LF_IMGSTA | VMS_LF_MAIN, orig_dyn->link_flags);
|
|
bfd_putl32 (EF_IA_64_ABI64, orig_dyn->elf_flags);
|
|
memcpy (orig_dyn->imgid, IMG_ID, sizeof (IMG_ID));
|
|
notes[5].type = NT_VMS_ORIG_DYN;
|
|
notes[5].descdata = (char *)orig_dyn;
|
|
notes[5].descsz = orig_dyn_size;
|
|
|
|
/* Note 3: Patchtime. */
|
|
notes[6].type = NT_VMS_PATCHTIME;
|
|
notes[6].descdata = (char *)cur_time;
|
|
notes[6].descsz = sizeof (cur_time);
|
|
|
|
/* Compute notes size. */
|
|
note_size = 0;
|
|
for (i = 0; i < NBR_NOTES; i++)
|
|
note_size += sizeof (Elf64_External_VMS_Note) - 1
|
|
+ ((sizeof (NOTE_NAME) - 1 + 7) & ~7)
|
|
+ ((notes[i].descsz + 7) & ~7);
|
|
|
|
/* Malloc a temporary buffer large enough for most notes */
|
|
note_contents = (unsigned char *) bfd_zalloc (abfd, note_size);
|
|
if (note_contents == NULL)
|
|
return false;
|
|
noteptr = note_contents;
|
|
|
|
/* Fill notes. */
|
|
for (i = 0; i < NBR_NOTES; i++)
|
|
{
|
|
Elf64_External_VMS_Note *enote = (Elf64_External_VMS_Note *) noteptr;
|
|
|
|
bfd_putl64 (sizeof (NOTE_NAME) - 1, enote->namesz);
|
|
bfd_putl64 (notes[i].descsz, enote->descsz);
|
|
bfd_putl64 (notes[i].type, enote->type);
|
|
|
|
noteptr = (unsigned char *)enote->name;
|
|
memcpy (noteptr, NOTE_NAME, sizeof (NOTE_NAME) - 1);
|
|
noteptr += (sizeof (NOTE_NAME) - 1 + 7) & ~7;
|
|
memcpy (noteptr, notes[i].descdata, notes[i].descsz);
|
|
noteptr += (notes[i].descsz + 7) & ~7;
|
|
}
|
|
|
|
ia64_info->note_sec->contents = note_contents;
|
|
ia64_info->note_sec->size = note_size;
|
|
|
|
free (module_name);
|
|
|
|
return true;
|
|
}
|
|
|
|
static bool
|
|
elf64_ia64_create_dynamic_sections (bfd *abfd,
|
|
struct bfd_link_info *info)
|
|
{
|
|
struct elf64_ia64_link_hash_table *ia64_info;
|
|
asection *s;
|
|
flagword flags;
|
|
const struct elf_backend_data *bed;
|
|
|
|
ia64_info = elf64_ia64_hash_table (info);
|
|
if (ia64_info == NULL)
|
|
return false;
|
|
|
|
if (elf_hash_table (info)->dynamic_sections_created)
|
|
return true;
|
|
|
|
abfd = elf_hash_table (info)->dynobj;
|
|
bed = get_elf_backend_data (abfd);
|
|
|
|
flags = bed->dynamic_sec_flags;
|
|
|
|
s = bfd_make_section_anyway_with_flags (abfd, ".dynamic",
|
|
flags | SEC_READONLY);
|
|
if (s == NULL
|
|
|| !bfd_set_section_alignment (s, bed->s->log_file_align))
|
|
return false;
|
|
|
|
s = bfd_make_section_anyway_with_flags (abfd, ".plt", flags | SEC_READONLY);
|
|
if (s == NULL
|
|
|| !bfd_set_section_alignment (s, bed->plt_alignment))
|
|
return false;
|
|
ia64_info->root.splt = s;
|
|
|
|
if (!get_got (abfd, ia64_info))
|
|
return false;
|
|
|
|
if (!get_pltoff (abfd, ia64_info))
|
|
return false;
|
|
|
|
s = bfd_make_section_anyway_with_flags (abfd, ".vmsdynstr",
|
|
(SEC_ALLOC
|
|
| SEC_HAS_CONTENTS
|
|
| SEC_IN_MEMORY
|
|
| SEC_LINKER_CREATED));
|
|
if (s == NULL
|
|
|| !bfd_set_section_alignment (s, 0))
|
|
return false;
|
|
|
|
/* Create a fixup section. */
|
|
s = bfd_make_section_anyway_with_flags (abfd, ".fixups",
|
|
(SEC_ALLOC
|
|
| SEC_HAS_CONTENTS
|
|
| SEC_IN_MEMORY
|
|
| SEC_LINKER_CREATED));
|
|
if (s == NULL
|
|
|| !bfd_set_section_alignment (s, 3))
|
|
return false;
|
|
ia64_info->fixups_sec = s;
|
|
|
|
/* Create the transfer fixup section. */
|
|
s = bfd_make_section_anyway_with_flags (abfd, ".transfer",
|
|
(SEC_ALLOC
|
|
| SEC_HAS_CONTENTS
|
|
| SEC_IN_MEMORY
|
|
| SEC_LINKER_CREATED));
|
|
if (s == NULL
|
|
|| !bfd_set_section_alignment (s, 3))
|
|
return false;
|
|
s->size = sizeof (struct elf64_vms_transfer);
|
|
ia64_info->transfer_sec = s;
|
|
|
|
/* Create note section. */
|
|
s = bfd_make_section_anyway_with_flags (abfd, ".vms.note",
|
|
(SEC_LINKER_CREATED
|
|
| SEC_HAS_CONTENTS
|
|
| SEC_IN_MEMORY
|
|
| SEC_READONLY));
|
|
if (s == NULL
|
|
|| !bfd_set_section_alignment (s, 3))
|
|
return false;
|
|
ia64_info->note_sec = s;
|
|
|
|
elf_hash_table (info)->dynamic_sections_created = true;
|
|
return true;
|
|
}
|
|
|
|
/* Find and/or create a hash entry for local symbol. */
|
|
static struct elf64_ia64_local_hash_entry *
|
|
get_local_sym_hash (struct elf64_ia64_link_hash_table *ia64_info,
|
|
bfd *abfd, const Elf_Internal_Rela *rel,
|
|
bool create)
|
|
{
|
|
struct elf64_ia64_local_hash_entry e, *ret;
|
|
asection *sec = abfd->sections;
|
|
hashval_t h = ELF_LOCAL_SYMBOL_HASH (sec->id,
|
|
ELF64_R_SYM (rel->r_info));
|
|
void **slot;
|
|
|
|
e.id = sec->id;
|
|
e.r_sym = ELF64_R_SYM (rel->r_info);
|
|
slot = htab_find_slot_with_hash (ia64_info->loc_hash_table, &e, h,
|
|
create ? INSERT : NO_INSERT);
|
|
|
|
if (!slot)
|
|
return NULL;
|
|
|
|
if (*slot)
|
|
return (struct elf64_ia64_local_hash_entry *) *slot;
|
|
|
|
ret = (struct elf64_ia64_local_hash_entry *)
|
|
objalloc_alloc ((struct objalloc *) ia64_info->loc_hash_memory,
|
|
sizeof (struct elf64_ia64_local_hash_entry));
|
|
if (ret)
|
|
{
|
|
memset (ret, 0, sizeof (*ret));
|
|
ret->id = sec->id;
|
|
ret->r_sym = ELF64_R_SYM (rel->r_info);
|
|
*slot = ret;
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
/* Used to sort elf64_ia64_dyn_sym_info array. */
|
|
|
|
static int
|
|
addend_compare (const void *xp, const void *yp)
|
|
{
|
|
const struct elf64_ia64_dyn_sym_info *x
|
|
= (const struct elf64_ia64_dyn_sym_info *) xp;
|
|
const struct elf64_ia64_dyn_sym_info *y
|
|
= (const struct elf64_ia64_dyn_sym_info *) yp;
|
|
|
|
return x->addend < y->addend ? -1 : x->addend > y->addend ? 1 : 0;
|
|
}
|
|
|
|
/* Sort elf64_ia64_dyn_sym_info array and remove duplicates. */
|
|
|
|
static unsigned int
|
|
sort_dyn_sym_info (struct elf64_ia64_dyn_sym_info *info,
|
|
unsigned int count)
|
|
{
|
|
bfd_vma curr, prev, got_offset;
|
|
unsigned int i, kept, dupes, diff, dest, src, len;
|
|
|
|
qsort (info, count, sizeof (*info), addend_compare);
|
|
|
|
/* Find the first duplicate. */
|
|
prev = info [0].addend;
|
|
got_offset = info [0].got_offset;
|
|
for (i = 1; i < count; i++)
|
|
{
|
|
curr = info [i].addend;
|
|
if (curr == prev)
|
|
{
|
|
/* For duplicates, make sure that GOT_OFFSET is valid. */
|
|
if (got_offset == (bfd_vma) -1)
|
|
got_offset = info [i].got_offset;
|
|
break;
|
|
}
|
|
got_offset = info [i].got_offset;
|
|
prev = curr;
|
|
}
|
|
|
|
/* We may move a block of elements to here. */
|
|
dest = i++;
|
|
|
|
/* Remove duplicates. */
|
|
if (i < count)
|
|
{
|
|
while (i < count)
|
|
{
|
|
/* For duplicates, make sure that the kept one has a valid
|
|
got_offset. */
|
|
kept = dest - 1;
|
|
if (got_offset != (bfd_vma) -1)
|
|
info [kept].got_offset = got_offset;
|
|
|
|
curr = info [i].addend;
|
|
got_offset = info [i].got_offset;
|
|
|
|
/* Move a block of elements whose first one is different from
|
|
the previous. */
|
|
if (curr == prev)
|
|
{
|
|
for (src = i + 1; src < count; src++)
|
|
{
|
|
if (info [src].addend != curr)
|
|
break;
|
|
/* For duplicates, make sure that GOT_OFFSET is
|
|
valid. */
|
|
if (got_offset == (bfd_vma) -1)
|
|
got_offset = info [src].got_offset;
|
|
}
|
|
|
|
/* Make sure that the kept one has a valid got_offset. */
|
|
if (got_offset != (bfd_vma) -1)
|
|
info [kept].got_offset = got_offset;
|
|
}
|
|
else
|
|
src = i;
|
|
|
|
if (src >= count)
|
|
break;
|
|
|
|
/* Find the next duplicate. SRC will be kept. */
|
|
prev = info [src].addend;
|
|
got_offset = info [src].got_offset;
|
|
for (dupes = src + 1; dupes < count; dupes ++)
|
|
{
|
|
curr = info [dupes].addend;
|
|
if (curr == prev)
|
|
{
|
|
/* Make sure that got_offset is valid. */
|
|
if (got_offset == (bfd_vma) -1)
|
|
got_offset = info [dupes].got_offset;
|
|
|
|
/* For duplicates, make sure that the kept one has
|
|
a valid got_offset. */
|
|
if (got_offset != (bfd_vma) -1)
|
|
info [dupes - 1].got_offset = got_offset;
|
|
break;
|
|
}
|
|
got_offset = info [dupes].got_offset;
|
|
prev = curr;
|
|
}
|
|
|
|
/* How much to move. */
|
|
len = dupes - src;
|
|
i = dupes + 1;
|
|
|
|
if (len == 1 && dupes < count)
|
|
{
|
|
/* If we only move 1 element, we combine it with the next
|
|
one. There must be at least a duplicate. Find the
|
|
next different one. */
|
|
for (diff = dupes + 1, src++; diff < count; diff++, src++)
|
|
{
|
|
if (info [diff].addend != curr)
|
|
break;
|
|
/* Make sure that got_offset is valid. */
|
|
if (got_offset == (bfd_vma) -1)
|
|
got_offset = info [diff].got_offset;
|
|
}
|
|
|
|
/* Makre sure that the last duplicated one has an valid
|
|
offset. */
|
|
BFD_ASSERT (curr == prev);
|
|
if (got_offset != (bfd_vma) -1)
|
|
info [diff - 1].got_offset = got_offset;
|
|
|
|
if (diff < count)
|
|
{
|
|
/* Find the next duplicate. Track the current valid
|
|
offset. */
|
|
prev = info [diff].addend;
|
|
got_offset = info [diff].got_offset;
|
|
for (dupes = diff + 1; dupes < count; dupes ++)
|
|
{
|
|
curr = info [dupes].addend;
|
|
if (curr == prev)
|
|
{
|
|
/* For duplicates, make sure that GOT_OFFSET
|
|
is valid. */
|
|
if (got_offset == (bfd_vma) -1)
|
|
got_offset = info [dupes].got_offset;
|
|
break;
|
|
}
|
|
got_offset = info [dupes].got_offset;
|
|
prev = curr;
|
|
diff++;
|
|
}
|
|
|
|
len = diff - src + 1;
|
|
i = diff + 1;
|
|
}
|
|
}
|
|
|
|
memmove (&info [dest], &info [src], len * sizeof (*info));
|
|
|
|
dest += len;
|
|
}
|
|
|
|
count = dest;
|
|
}
|
|
else
|
|
{
|
|
/* When we get here, either there is no duplicate at all or
|
|
the only duplicate is the last element. */
|
|
if (dest < count)
|
|
{
|
|
/* If the last element is a duplicate, make sure that the
|
|
kept one has a valid got_offset. We also update count. */
|
|
if (got_offset != (bfd_vma) -1)
|
|
info [dest - 1].got_offset = got_offset;
|
|
count = dest;
|
|
}
|
|
}
|
|
|
|
return count;
|
|
}
|
|
|
|
/* Find and/or create a descriptor for dynamic symbol info. This will
|
|
vary based on global or local symbol, and the addend to the reloc.
|
|
|
|
We don't sort when inserting. Also, we sort and eliminate
|
|
duplicates if there is an unsorted section. Typically, this will
|
|
only happen once, because we do all insertions before lookups. We
|
|
then use bsearch to do a lookup. This also allows lookups to be
|
|
fast. So we have fast insertion (O(log N) due to duplicate check),
|
|
fast lookup (O(log N)) and one sort (O(N log N) expected time).
|
|
Previously, all lookups were O(N) because of the use of the linked
|
|
list and also all insertions were O(N) because of the check for
|
|
duplicates. There are some complications here because the array
|
|
size grows occasionally, which may add an O(N) factor, but this
|
|
should be rare. Also, we free the excess array allocation, which
|
|
requires a copy which is O(N), but this only happens once. */
|
|
|
|
static struct elf64_ia64_dyn_sym_info *
|
|
get_dyn_sym_info (struct elf64_ia64_link_hash_table *ia64_info,
|
|
struct elf_link_hash_entry *h, bfd *abfd,
|
|
const Elf_Internal_Rela *rel, bool create)
|
|
{
|
|
struct elf64_ia64_dyn_sym_info **info_p, *info, *dyn_i, key;
|
|
unsigned int *count_p, *sorted_count_p, *size_p;
|
|
unsigned int count, sorted_count, size;
|
|
bfd_vma addend = rel ? rel->r_addend : 0;
|
|
bfd_size_type amt;
|
|
|
|
if (h)
|
|
{
|
|
struct elf64_ia64_link_hash_entry *global_h;
|
|
|
|
global_h = (struct elf64_ia64_link_hash_entry *) h;
|
|
info_p = &global_h->info;
|
|
count_p = &global_h->count;
|
|
sorted_count_p = &global_h->sorted_count;
|
|
size_p = &global_h->size;
|
|
}
|
|
else
|
|
{
|
|
struct elf64_ia64_local_hash_entry *loc_h;
|
|
|
|
loc_h = get_local_sym_hash (ia64_info, abfd, rel, create);
|
|
if (!loc_h)
|
|
{
|
|
BFD_ASSERT (!create);
|
|
return NULL;
|
|
}
|
|
|
|
info_p = &loc_h->info;
|
|
count_p = &loc_h->count;
|
|
sorted_count_p = &loc_h->sorted_count;
|
|
size_p = &loc_h->size;
|
|
}
|
|
|
|
count = *count_p;
|
|
sorted_count = *sorted_count_p;
|
|
size = *size_p;
|
|
info = *info_p;
|
|
if (create)
|
|
{
|
|
/* When we create the array, we don't check for duplicates,
|
|
except in the previously sorted section if one exists, and
|
|
against the last inserted entry. This allows insertions to
|
|
be fast. */
|
|
if (info)
|
|
{
|
|
if (sorted_count)
|
|
{
|
|
/* Try bsearch first on the sorted section. */
|
|
key.addend = addend;
|
|
dyn_i = bsearch (&key, info, sorted_count,
|
|
sizeof (*info), addend_compare);
|
|
|
|
if (dyn_i)
|
|
{
|
|
return dyn_i;
|
|
}
|
|
}
|
|
|
|
/* Do a quick check for the last inserted entry. */
|
|
dyn_i = info + count - 1;
|
|
if (dyn_i->addend == addend)
|
|
{
|
|
return dyn_i;
|
|
}
|
|
}
|
|
|
|
if (size == 0)
|
|
{
|
|
/* It is the very first element. We create the array of size
|
|
1. */
|
|
size = 1;
|
|
amt = size * sizeof (*info);
|
|
info = bfd_malloc (amt);
|
|
}
|
|
else if (size <= count)
|
|
{
|
|
/* We double the array size every time when we reach the
|
|
size limit. */
|
|
size += size;
|
|
amt = size * sizeof (*info);
|
|
info = bfd_realloc (info, amt);
|
|
}
|
|
else
|
|
goto has_space;
|
|
|
|
if (info == NULL)
|
|
return NULL;
|
|
*size_p = size;
|
|
*info_p = info;
|
|
|
|
has_space:
|
|
/* Append the new one to the array. */
|
|
dyn_i = info + count;
|
|
memset (dyn_i, 0, sizeof (*dyn_i));
|
|
dyn_i->got_offset = (bfd_vma) -1;
|
|
dyn_i->addend = addend;
|
|
|
|
/* We increment count only since the new ones are unsorted and
|
|
may have duplicate. */
|
|
(*count_p)++;
|
|
}
|
|
else
|
|
{
|
|
/* It is a lookup without insertion. Sort array if part of the
|
|
array isn't sorted. */
|
|
if (count != sorted_count)
|
|
{
|
|
count = sort_dyn_sym_info (info, count);
|
|
*count_p = count;
|
|
*sorted_count_p = count;
|
|
}
|
|
|
|
/* Free unused memory. */
|
|
if (size != count)
|
|
{
|
|
amt = count * sizeof (*info);
|
|
info = bfd_malloc (amt);
|
|
if (info != NULL)
|
|
{
|
|
memcpy (info, *info_p, amt);
|
|
free (*info_p);
|
|
*size_p = count;
|
|
*info_p = info;
|
|
}
|
|
}
|
|
|
|
key.addend = addend;
|
|
dyn_i = bsearch (&key, info, count,
|
|
sizeof (*info), addend_compare);
|
|
}
|
|
|
|
return dyn_i;
|
|
}
|
|
|
|
static asection *
|
|
get_got (bfd *abfd, struct elf64_ia64_link_hash_table *ia64_info)
|
|
{
|
|
asection *got;
|
|
bfd *dynobj;
|
|
|
|
got = ia64_info->root.sgot;
|
|
if (!got)
|
|
{
|
|
flagword flags;
|
|
|
|
dynobj = ia64_info->root.dynobj;
|
|
if (!dynobj)
|
|
ia64_info->root.dynobj = dynobj = abfd;
|
|
|
|
/* The .got section is always aligned at 8 bytes. */
|
|
flags = get_elf_backend_data (dynobj)->dynamic_sec_flags;
|
|
got = bfd_make_section_anyway_with_flags (dynobj, ".got",
|
|
flags | SEC_SMALL_DATA);
|
|
if (got == NULL
|
|
|| !bfd_set_section_alignment (got, 3))
|
|
return NULL;
|
|
ia64_info->root.sgot = got;
|
|
}
|
|
|
|
return got;
|
|
}
|
|
|
|
/* Create function descriptor section (.opd). This section is called .opd
|
|
because it contains "official procedure descriptors". The "official"
|
|
refers to the fact that these descriptors are used when taking the address
|
|
of a procedure, thus ensuring a unique address for each procedure. */
|
|
|
|
static asection *
|
|
get_fptr (bfd *abfd, struct bfd_link_info *info,
|
|
struct elf64_ia64_link_hash_table *ia64_info)
|
|
{
|
|
asection *fptr;
|
|
bfd *dynobj;
|
|
|
|
fptr = ia64_info->fptr_sec;
|
|
if (!fptr)
|
|
{
|
|
dynobj = ia64_info->root.dynobj;
|
|
if (!dynobj)
|
|
ia64_info->root.dynobj = dynobj = abfd;
|
|
|
|
fptr = bfd_make_section_anyway_with_flags (dynobj, ".opd",
|
|
(SEC_ALLOC
|
|
| SEC_LOAD
|
|
| SEC_HAS_CONTENTS
|
|
| SEC_IN_MEMORY
|
|
| (bfd_link_pie (info) ? 0
|
|
: SEC_READONLY)
|
|
| SEC_LINKER_CREATED));
|
|
if (!fptr
|
|
|| !bfd_set_section_alignment (fptr, 4))
|
|
{
|
|
BFD_ASSERT (0);
|
|
return NULL;
|
|
}
|
|
|
|
ia64_info->fptr_sec = fptr;
|
|
|
|
if (bfd_link_pie (info))
|
|
{
|
|
asection *fptr_rel;
|
|
fptr_rel = bfd_make_section_anyway_with_flags (dynobj, ".rela.opd",
|
|
(SEC_ALLOC | SEC_LOAD
|
|
| SEC_HAS_CONTENTS
|
|
| SEC_IN_MEMORY
|
|
| SEC_LINKER_CREATED
|
|
| SEC_READONLY));
|
|
if (fptr_rel == NULL
|
|
|| !bfd_set_section_alignment (fptr_rel, 3))
|
|
{
|
|
BFD_ASSERT (0);
|
|
return NULL;
|
|
}
|
|
|
|
ia64_info->rel_fptr_sec = fptr_rel;
|
|
}
|
|
}
|
|
|
|
return fptr;
|
|
}
|
|
|
|
static asection *
|
|
get_pltoff (bfd *abfd, struct elf64_ia64_link_hash_table *ia64_info)
|
|
{
|
|
asection *pltoff;
|
|
bfd *dynobj;
|
|
|
|
pltoff = ia64_info->pltoff_sec;
|
|
if (!pltoff)
|
|
{
|
|
dynobj = ia64_info->root.dynobj;
|
|
if (!dynobj)
|
|
ia64_info->root.dynobj = dynobj = abfd;
|
|
|
|
pltoff = bfd_make_section_anyway_with_flags (dynobj,
|
|
ELF_STRING_ia64_pltoff,
|
|
(SEC_ALLOC
|
|
| SEC_LOAD
|
|
| SEC_HAS_CONTENTS
|
|
| SEC_IN_MEMORY
|
|
| SEC_SMALL_DATA
|
|
| SEC_LINKER_CREATED));
|
|
if (!pltoff
|
|
|| !bfd_set_section_alignment (pltoff, 4))
|
|
{
|
|
BFD_ASSERT (0);
|
|
return NULL;
|
|
}
|
|
|
|
ia64_info->pltoff_sec = pltoff;
|
|
}
|
|
|
|
return pltoff;
|
|
}
|
|
|
|
static asection *
|
|
get_reloc_section (bfd *abfd,
|
|
struct elf64_ia64_link_hash_table *ia64_info,
|
|
asection *sec, bool create)
|
|
{
|
|
const char *srel_name;
|
|
asection *srel;
|
|
bfd *dynobj;
|
|
|
|
srel_name = (bfd_elf_string_from_elf_section
|
|
(abfd, elf_elfheader(abfd)->e_shstrndx,
|
|
_bfd_elf_single_rel_hdr (sec)->sh_name));
|
|
if (srel_name == NULL)
|
|
return NULL;
|
|
|
|
BFD_ASSERT ((startswith (srel_name, ".rela")
|
|
&& strcmp (bfd_section_name (sec), srel_name+5) == 0)
|
|
|| (startswith (srel_name, ".rel")
|
|
&& strcmp (bfd_section_name (sec), srel_name+4) == 0));
|
|
|
|
dynobj = ia64_info->root.dynobj;
|
|
if (!dynobj)
|
|
ia64_info->root.dynobj = dynobj = abfd;
|
|
|
|
srel = bfd_get_linker_section (dynobj, srel_name);
|
|
if (srel == NULL && create)
|
|
{
|
|
srel = bfd_make_section_anyway_with_flags (dynobj, srel_name,
|
|
(SEC_ALLOC | SEC_LOAD
|
|
| SEC_HAS_CONTENTS
|
|
| SEC_IN_MEMORY
|
|
| SEC_LINKER_CREATED
|
|
| SEC_READONLY));
|
|
if (srel == NULL
|
|
|| !bfd_set_section_alignment (srel, 3))
|
|
return NULL;
|
|
}
|
|
|
|
return srel;
|
|
}
|
|
|
|
static bool
|
|
count_dyn_reloc (bfd *abfd, struct elf64_ia64_dyn_sym_info *dyn_i,
|
|
asection *srel, int type)
|
|
{
|
|
struct elf64_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 elf64_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 bool
|
|
elf64_ia64_check_relocs (bfd *abfd, struct bfd_link_info *info,
|
|
asection *sec,
|
|
const Elf_Internal_Rela *relocs)
|
|
{
|
|
struct elf64_ia64_link_hash_table *ia64_info;
|
|
const Elf_Internal_Rela *relend;
|
|
Elf_Internal_Shdr *symtab_hdr;
|
|
const Elf_Internal_Rela *rel;
|
|
asection *got, *fptr, *srel, *pltoff;
|
|
enum {
|
|
NEED_GOT = 1,
|
|
NEED_GOTX = 2,
|
|
NEED_FPTR = 4,
|
|
NEED_PLTOFF = 8,
|
|
NEED_MIN_PLT = 16,
|
|
NEED_FULL_PLT = 32,
|
|
NEED_DYNREL = 64,
|
|
NEED_LTOFF_FPTR = 128
|
|
};
|
|
int need_entry;
|
|
struct elf_link_hash_entry *h;
|
|
unsigned long r_symndx;
|
|
bool maybe_dynamic;
|
|
|
|
if (bfd_link_relocatable (info))
|
|
return true;
|
|
|
|
symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
|
|
ia64_info = elf64_ia64_hash_table (info);
|
|
if (ia64_info == NULL)
|
|
return false;
|
|
|
|
got = fptr = srel = pltoff = NULL;
|
|
|
|
relend = relocs + sec->reloc_count;
|
|
|
|
/* We scan relocations first to create dynamic relocation arrays. We
|
|
modified get_dyn_sym_info to allow fast insertion and support fast
|
|
lookup in the next loop. */
|
|
for (rel = relocs; rel < relend; ++rel)
|
|
{
|
|
r_symndx = ELF64_R_SYM (rel->r_info);
|
|
if (r_symndx >= symtab_hdr->sh_info)
|
|
{
|
|
long indx = r_symndx - symtab_hdr->sh_info;
|
|
h = elf_sym_hashes (abfd)[indx];
|
|
while (h->root.type == bfd_link_hash_indirect
|
|
|| h->root.type == bfd_link_hash_warning)
|
|
h = (struct elf_link_hash_entry *) h->root.u.i.link;
|
|
}
|
|
else
|
|
h = NULL;
|
|
|
|
/* We can only get preliminary data on whether a symbol is
|
|
locally or externally defined, as not all of the input files
|
|
have yet been processed. Do something with what we know, as
|
|
this may help reduce memory usage and processing time later. */
|
|
maybe_dynamic = (h && ((!bfd_link_executable (info)
|
|
&& (!SYMBOLIC_BIND (info, h)
|
|
|| info->unresolved_syms_in_shared_libs == RM_IGNORE))
|
|
|| !h->def_regular
|
|
|| h->root.type == bfd_link_hash_defweak));
|
|
|
|
need_entry = 0;
|
|
switch (ELF64_R_TYPE (rel->r_info))
|
|
{
|
|
case R_IA64_TPREL64MSB:
|
|
case R_IA64_TPREL64LSB:
|
|
case R_IA64_LTOFF_TPREL22:
|
|
case R_IA64_DTPREL32MSB:
|
|
case R_IA64_DTPREL32LSB:
|
|
case R_IA64_DTPREL64MSB:
|
|
case R_IA64_DTPREL64LSB:
|
|
case R_IA64_LTOFF_DTPREL22:
|
|
case R_IA64_DTPMOD64MSB:
|
|
case R_IA64_DTPMOD64LSB:
|
|
case R_IA64_LTOFF_DTPMOD22:
|
|
abort ();
|
|
break;
|
|
|
|
case R_IA64_IPLTMSB:
|
|
case R_IA64_IPLTLSB:
|
|
break;
|
|
|
|
case R_IA64_LTOFF_FPTR22:
|
|
case R_IA64_LTOFF_FPTR64I:
|
|
case R_IA64_LTOFF_FPTR32MSB:
|
|
case R_IA64_LTOFF_FPTR32LSB:
|
|
case R_IA64_LTOFF_FPTR64MSB:
|
|
case R_IA64_LTOFF_FPTR64LSB:
|
|
need_entry = NEED_FPTR | NEED_GOT | NEED_LTOFF_FPTR;
|
|
break;
|
|
|
|
case R_IA64_FPTR64I:
|
|
case R_IA64_FPTR32MSB:
|
|
case R_IA64_FPTR32LSB:
|
|
case R_IA64_FPTR64MSB:
|
|
case R_IA64_FPTR64LSB:
|
|
if (bfd_link_pic (info) || h)
|
|
need_entry = NEED_FPTR | NEED_DYNREL;
|
|
else
|
|
need_entry = NEED_FPTR;
|
|
break;
|
|
|
|
case R_IA64_LTOFF22:
|
|
case R_IA64_LTOFF64I:
|
|
need_entry = NEED_GOT;
|
|
break;
|
|
|
|
case R_IA64_LTOFF22X:
|
|
need_entry = NEED_GOTX;
|
|
break;
|
|
|
|
case R_IA64_PLTOFF22:
|
|
case R_IA64_PLTOFF64I:
|
|
case R_IA64_PLTOFF64MSB:
|
|
case R_IA64_PLTOFF64LSB:
|
|
need_entry = NEED_PLTOFF;
|
|
if (h)
|
|
{
|
|
if (maybe_dynamic)
|
|
need_entry |= NEED_MIN_PLT;
|
|
}
|
|
else
|
|
{
|
|
(*info->callbacks->warning)
|
|
(info, _("@pltoff reloc against local symbol"), 0,
|
|
abfd, 0, (bfd_vma) 0);
|
|
}
|
|
break;
|
|
|
|
case R_IA64_PCREL21B:
|
|
case R_IA64_PCREL60B:
|
|
/* Depending on where this symbol is defined, we may or may not
|
|
need a full plt entry. Only skip if we know we'll not need
|
|
the entry -- static or symbolic, and the symbol definition
|
|
has already been seen. */
|
|
if (maybe_dynamic && rel->r_addend == 0)
|
|
need_entry = NEED_FULL_PLT;
|
|
break;
|
|
|
|
case R_IA64_IMM14:
|
|
case R_IA64_IMM22:
|
|
case R_IA64_IMM64:
|
|
case R_IA64_DIR32MSB:
|
|
case R_IA64_DIR32LSB:
|
|
case R_IA64_DIR64MSB:
|
|
case R_IA64_DIR64LSB:
|
|
/* Shared objects will always need at least a REL relocation. */
|
|
if (bfd_link_pic (info) || maybe_dynamic)
|
|
need_entry = NEED_DYNREL;
|
|
break;
|
|
|
|
case R_IA64_PCREL22:
|
|
case R_IA64_PCREL64I:
|
|
case R_IA64_PCREL32MSB:
|
|
case R_IA64_PCREL32LSB:
|
|
case R_IA64_PCREL64MSB:
|
|
case R_IA64_PCREL64LSB:
|
|
if (maybe_dynamic)
|
|
need_entry = NEED_DYNREL;
|
|
break;
|
|
}
|
|
|
|
if (!need_entry)
|
|
continue;
|
|
|
|
if ((need_entry & NEED_FPTR) != 0
|
|
&& rel->r_addend)
|
|
{
|
|
(*info->callbacks->warning)
|
|
(info, _("non-zero addend in @fptr reloc"), 0,
|
|
abfd, 0, (bfd_vma) 0);
|
|
}
|
|
|
|
if (get_dyn_sym_info (ia64_info, h, abfd, rel, true) == NULL)
|
|
return false;
|
|
}
|
|
|
|
/* Now, we only do lookup without insertion, which is very fast
|
|
with the modified get_dyn_sym_info. */
|
|
for (rel = relocs; rel < relend; ++rel)
|
|
{
|
|
struct elf64_ia64_dyn_sym_info *dyn_i;
|
|
int dynrel_type = R_IA64_NONE;
|
|
|
|
r_symndx = ELF64_R_SYM (rel->r_info);
|
|
if (r_symndx >= symtab_hdr->sh_info)
|
|
{
|
|
/* We're dealing with a global symbol -- find its hash entry
|
|
and mark it as being referenced. */
|
|
long indx = r_symndx - symtab_hdr->sh_info;
|
|
h = elf_sym_hashes (abfd)[indx];
|
|
while (h->root.type == bfd_link_hash_indirect
|
|
|| h->root.type == bfd_link_hash_warning)
|
|
h = (struct elf_link_hash_entry *) h->root.u.i.link;
|
|
|
|
/* PR15323, ref flags aren't set for references in the same
|
|
object. */
|
|
h->ref_regular = 1;
|
|
}
|
|
else
|
|
h = NULL;
|
|
|
|
/* We can only get preliminary data on whether a symbol is
|
|
locally or externally defined, as not all of the input files
|
|
have yet been processed. Do something with what we know, as
|
|
this may help reduce memory usage and processing time later. */
|
|
maybe_dynamic = (h && ((!bfd_link_executable (info)
|
|
&& (!SYMBOLIC_BIND (info, h)
|
|
|| info->unresolved_syms_in_shared_libs == RM_IGNORE))
|
|
|| !h->def_regular
|
|
|| h->root.type == bfd_link_hash_defweak));
|
|
|
|
need_entry = 0;
|
|
switch (ELF64_R_TYPE (rel->r_info))
|
|
{
|
|
case R_IA64_TPREL64MSB:
|
|
case R_IA64_TPREL64LSB:
|
|
case R_IA64_LTOFF_TPREL22:
|
|
case R_IA64_DTPREL32MSB:
|
|
case R_IA64_DTPREL32LSB:
|
|
case R_IA64_DTPREL64MSB:
|
|
case R_IA64_DTPREL64LSB:
|
|
case R_IA64_LTOFF_DTPREL22:
|
|
case R_IA64_DTPMOD64MSB:
|
|
case R_IA64_DTPMOD64LSB:
|
|
case R_IA64_LTOFF_DTPMOD22:
|
|
abort ();
|
|
break;
|
|
|
|
case R_IA64_LTOFF_FPTR22:
|
|
case R_IA64_LTOFF_FPTR64I:
|
|
case R_IA64_LTOFF_FPTR32MSB:
|
|
case R_IA64_LTOFF_FPTR32LSB:
|
|
case R_IA64_LTOFF_FPTR64MSB:
|
|
case R_IA64_LTOFF_FPTR64LSB:
|
|
need_entry = NEED_FPTR | NEED_GOT | NEED_LTOFF_FPTR;
|
|
break;
|
|
|
|
case R_IA64_FPTR64I:
|
|
case R_IA64_FPTR32MSB:
|
|
case R_IA64_FPTR32LSB:
|
|
case R_IA64_FPTR64MSB:
|
|
case R_IA64_FPTR64LSB:
|
|
if (bfd_link_pic (info) || h)
|
|
need_entry = NEED_FPTR | NEED_DYNREL;
|
|
else
|
|
need_entry = NEED_FPTR;
|
|
dynrel_type = R_IA64_FPTR64LSB;
|
|
break;
|
|
|
|
case R_IA64_LTOFF22:
|
|
case R_IA64_LTOFF64I:
|
|
need_entry = NEED_GOT;
|
|
break;
|
|
|
|
case R_IA64_LTOFF22X:
|
|
need_entry = NEED_GOTX;
|
|
break;
|
|
|
|
case R_IA64_PLTOFF22:
|
|
case R_IA64_PLTOFF64I:
|
|
case R_IA64_PLTOFF64MSB:
|
|
case R_IA64_PLTOFF64LSB:
|
|
need_entry = NEED_PLTOFF;
|
|
if (h)
|
|
{
|
|
if (maybe_dynamic)
|
|
need_entry |= NEED_MIN_PLT;
|
|
}
|
|
break;
|
|
|
|
case R_IA64_PCREL21B:
|
|
case R_IA64_PCREL60B:
|
|
/* Depending on where this symbol is defined, we may or may not
|
|
need a full plt entry. Only skip if we know we'll not need
|
|
the entry -- static or symbolic, and the symbol definition
|
|
has already been seen. */
|
|
if (maybe_dynamic && rel->r_addend == 0)
|
|
need_entry = NEED_FULL_PLT;
|
|
break;
|
|
|
|
case R_IA64_IMM14:
|
|
case R_IA64_IMM22:
|
|
case R_IA64_IMM64:
|
|
case R_IA64_DIR32MSB:
|
|
case R_IA64_DIR32LSB:
|
|
case R_IA64_DIR64MSB:
|
|
case R_IA64_DIR64LSB:
|
|
/* Shared objects will always need at least a REL relocation. */
|
|
if (bfd_link_pic (info) || maybe_dynamic)
|
|
need_entry = NEED_DYNREL;
|
|
dynrel_type = R_IA64_DIR64LSB;
|
|
break;
|
|
|
|
case R_IA64_IPLTMSB:
|
|
case 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;
|
|
|
|
dyn_i = get_dyn_sym_info (ia64_info, h, abfd, rel, false);
|
|
|
|
/* Record whether or not this is a local symbol. */
|
|
dyn_i->h = h;
|
|
|
|
/* Create what's needed. */
|
|
if (need_entry & (NEED_GOT | NEED_GOTX))
|
|
{
|
|
if (!got)
|
|
{
|
|
got = get_got (abfd, ia64_info);
|
|
if (!got)
|
|
return false;
|
|
}
|
|
if (need_entry & NEED_GOT)
|
|
dyn_i->want_got = 1;
|
|
if (need_entry & NEED_GOTX)
|
|
dyn_i->want_gotx = 1;
|
|
}
|
|
if (need_entry & NEED_FPTR)
|
|
{
|
|
/* Create the .opd section. */
|
|
if (!fptr)
|
|
{
|
|
fptr = get_fptr (abfd, info, ia64_info);
|
|
if (!fptr)
|
|
return false;
|
|
}
|
|
dyn_i->want_fptr = 1;
|
|
}
|
|
if (need_entry & NEED_LTOFF_FPTR)
|
|
dyn_i->want_ltoff_fptr = 1;
|
|
if (need_entry & (NEED_MIN_PLT | NEED_FULL_PLT))
|
|
{
|
|
if (!ia64_info->root.dynobj)
|
|
ia64_info->root.dynobj = abfd;
|
|
h->needs_plt = 1;
|
|
dyn_i->want_plt = 1;
|
|
}
|
|
if (need_entry & NEED_FULL_PLT)
|
|
dyn_i->want_plt2 = 1;
|
|
if (need_entry & NEED_PLTOFF)
|
|
{
|
|
/* This is needed here, in case @pltoff is used in a non-shared
|
|
link. */
|
|
if (!pltoff)
|
|
{
|
|
pltoff = get_pltoff (abfd, ia64_info);
|
|
if (!pltoff)
|
|
return false;
|
|
}
|
|
|
|
dyn_i->want_pltoff = 1;
|
|
}
|
|
if ((need_entry & NEED_DYNREL) && (sec->flags & SEC_ALLOC))
|
|
{
|
|
if (!srel)
|
|
{
|
|
srel = get_reloc_section (abfd, ia64_info, sec, true);
|
|
if (!srel)
|
|
return false;
|
|
}
|
|
if (!count_dyn_reloc (abfd, dyn_i, srel, dynrel_type))
|
|
return false;
|
|
}
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
/* For cleanliness, and potentially faster dynamic loading, allocate
|
|
external GOT entries first. */
|
|
|
|
static bool
|
|
allocate_global_data_got (struct elf64_ia64_dyn_sym_info *dyn_i,
|
|
void * data)
|
|
{
|
|
struct elf64_ia64_allocate_data *x = (struct elf64_ia64_allocate_data *)data;
|
|
|
|
if ((dyn_i->want_got || dyn_i->want_gotx)
|
|
&& ! dyn_i->want_fptr
|
|
&& elf64_ia64_dynamic_symbol_p (dyn_i->h))
|
|
{
|
|
/* GOT entry with FPTR is done by allocate_global_fptr_got. */
|
|
dyn_i->got_offset = x->ofs;
|
|
x->ofs += 8;
|
|
}
|
|
return true;
|
|
}
|
|
|
|
/* Next, allocate all the GOT entries used by LTOFF_FPTR relocs. */
|
|
|
|
static bool
|
|
allocate_global_fptr_got (struct elf64_ia64_dyn_sym_info *dyn_i,
|
|
void * data)
|
|
{
|
|
struct elf64_ia64_allocate_data *x = (struct elf64_ia64_allocate_data *)data;
|
|
|
|
if (dyn_i->want_got
|
|
&& dyn_i->want_fptr
|
|
&& elf64_ia64_dynamic_symbol_p (dyn_i->h))
|
|
{
|
|
dyn_i->got_offset = x->ofs;
|
|
x->ofs += 8;
|
|
}
|
|
return true;
|
|
}
|
|
|
|
/* Lastly, allocate all the GOT entries for local data. */
|
|
|
|
static bool
|
|
allocate_local_got (struct elf64_ia64_dyn_sym_info *dyn_i,
|
|
void * data)
|
|
{
|
|
struct elf64_ia64_allocate_data *x = (struct elf64_ia64_allocate_data *) data;
|
|
|
|
if ((dyn_i->want_got || dyn_i->want_gotx)
|
|
&& !elf64_ia64_dynamic_symbol_p (dyn_i->h))
|
|
{
|
|
dyn_i->got_offset = x->ofs;
|
|
x->ofs += 8;
|
|
}
|
|
return true;
|
|
}
|
|
|
|
/* Allocate function descriptors. We can do these for every function
|
|
in a main executable that is not exported. */
|
|
|
|
static bool
|
|
allocate_fptr (struct elf64_ia64_dyn_sym_info *dyn_i, void * data)
|
|
{
|
|
struct elf64_ia64_allocate_data *x = (struct elf64_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 (h == NULL || !h->def_dynamic)
|
|
{
|
|
/* A non dynamic symbol. */
|
|
dyn_i->fptr_offset = x->ofs;
|
|
x->ofs += 16;
|
|
}
|
|
else
|
|
dyn_i->want_fptr = 0;
|
|
}
|
|
return true;
|
|
}
|
|
|
|
/* Allocate all the minimal PLT entries. */
|
|
|
|
static bool
|
|
allocate_plt_entries (struct elf64_ia64_dyn_sym_info *dyn_i,
|
|
void * data ATTRIBUTE_UNUSED)
|
|
{
|
|
if (dyn_i->want_plt)
|
|
{
|
|
struct elf_link_hash_entry *h = dyn_i->h;
|
|
|
|
if (h)
|
|
while (h->root.type == bfd_link_hash_indirect
|
|
|| h->root.type == bfd_link_hash_warning)
|
|
h = (struct elf_link_hash_entry *) h->root.u.i.link;
|
|
|
|
/* ??? Versioned symbols seem to lose NEEDS_PLT. */
|
|
if (elf64_ia64_dynamic_symbol_p (h))
|
|
{
|
|
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 bool
|
|
allocate_plt2_entries (struct elf64_ia64_dyn_sym_info *dyn_i,
|
|
void * data)
|
|
{
|
|
struct elf64_ia64_allocate_data *x = (struct elf64_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 bool
|
|
allocate_pltoff_entries (struct elf64_ia64_dyn_sym_info *dyn_i,
|
|
void * data)
|
|
{
|
|
struct elf64_ia64_allocate_data *x = (struct elf64_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 bool
|
|
allocate_dynrel_entries (struct elf64_ia64_dyn_sym_info *dyn_i,
|
|
void * data)
|
|
{
|
|
struct elf64_ia64_allocate_data *x = (struct elf64_ia64_allocate_data *)data;
|
|
struct elf64_ia64_link_hash_table *ia64_info;
|
|
struct elf64_ia64_dyn_reloc_entry *rent;
|
|
bool dynamic_symbol, shared, resolved_zero;
|
|
struct elf64_ia64_link_hash_entry *h_ia64;
|
|
|
|
ia64_info = elf64_ia64_hash_table (x->info);
|
|
if (ia64_info == NULL)
|
|
return false;
|
|
|
|
/* Note that this can't be used in relation to FPTR relocs below. */
|
|
dynamic_symbol = elf64_ia64_dynamic_symbol_p (dyn_i->h);
|
|
|
|
shared = bfd_link_pic (x->info);
|
|
resolved_zero = (dyn_i->h
|
|
&& ELF_ST_VISIBILITY (dyn_i->h->other)
|
|
&& dyn_i->h->root.type == bfd_link_hash_undefweak);
|
|
|
|
/* Take care of the GOT and PLT relocations. */
|
|
|
|
if ((!resolved_zero
|
|
&& (dynamic_symbol || shared)
|
|
&& (dyn_i->want_got || dyn_i->want_gotx))
|
|
|| (dyn_i->want_ltoff_fptr
|
|
&& dyn_i->h
|
|
&& dyn_i->h->def_dynamic))
|
|
{
|
|
/* VMS: FIX64. */
|
|
if (dyn_i->h != NULL && dyn_i->h->def_dynamic)
|
|
{
|
|
h_ia64 = (struct elf64_ia64_link_hash_entry *) dyn_i->h;
|
|
elf_ia64_vms_tdata (h_ia64->shl)->fixups_off +=
|
|
sizeof (Elf64_External_VMS_IMAGE_FIXUP);
|
|
ia64_info->fixups_sec->size +=
|
|
sizeof (Elf64_External_VMS_IMAGE_FIXUP);
|
|
}
|
|
}
|
|
|
|
if (ia64_info->rel_fptr_sec && dyn_i->want_fptr)
|
|
{
|
|
/* VMS: only image reloc. */
|
|
if (dyn_i->h == NULL || dyn_i->h->root.type != bfd_link_hash_undefweak)
|
|
ia64_info->rel_fptr_sec->size += sizeof (Elf64_External_Rela);
|
|
}
|
|
|
|
if (!resolved_zero && dyn_i->want_pltoff)
|
|
{
|
|
/* VMS: FIXFD. */
|
|
if (dyn_i->h != NULL && dyn_i->h->def_dynamic)
|
|
{
|
|
h_ia64 = (struct elf64_ia64_link_hash_entry *) dyn_i->h;
|
|
elf_ia64_vms_tdata (h_ia64->shl)->fixups_off +=
|
|
sizeof (Elf64_External_VMS_IMAGE_FIXUP);
|
|
ia64_info->fixups_sec->size +=
|
|
sizeof (Elf64_External_VMS_IMAGE_FIXUP);
|
|
}
|
|
}
|
|
|
|
/* Take care of the normal data relocations. */
|
|
|
|
for (rent = dyn_i->reloc_entries; rent; rent = rent->next)
|
|
{
|
|
switch (rent->type)
|
|
{
|
|
case R_IA64_FPTR32LSB:
|
|
case R_IA64_FPTR64LSB:
|
|
/* Allocate one iff !want_fptr and not PIE, which by this point
|
|
will be true only if we're actually allocating one statically
|
|
in the main executable. Position independent executables
|
|
need a relative reloc. */
|
|
if (dyn_i->want_fptr && !bfd_link_pie (x->info))
|
|
continue;
|
|
break;
|
|
case R_IA64_PCREL32LSB:
|
|
case R_IA64_PCREL64LSB:
|
|
if (!dynamic_symbol)
|
|
continue;
|
|
break;
|
|
case R_IA64_DIR32LSB:
|
|
case R_IA64_DIR64LSB:
|
|
if (!dynamic_symbol && !shared)
|
|
continue;
|
|
break;
|
|
case R_IA64_IPLTLSB:
|
|
if (!dynamic_symbol && !shared)
|
|
continue;
|
|
break;
|
|
case R_IA64_DTPREL32LSB:
|
|
case R_IA64_TPREL64LSB:
|
|
case R_IA64_DTPREL64LSB:
|
|
case R_IA64_DTPMOD64LSB:
|
|
break;
|
|
default:
|
|
abort ();
|
|
}
|
|
|
|
/* Add a fixup. */
|
|
if (!dynamic_symbol)
|
|
abort ();
|
|
|
|
h_ia64 = (struct elf64_ia64_link_hash_entry *) dyn_i->h;
|
|
elf_ia64_vms_tdata (h_ia64->shl)->fixups_off +=
|
|
sizeof (Elf64_External_VMS_IMAGE_FIXUP);
|
|
ia64_info->fixups_sec->size +=
|
|
sizeof (Elf64_External_VMS_IMAGE_FIXUP);
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
static bool
|
|
elf64_ia64_adjust_dynamic_symbol (struct bfd_link_info *info ATTRIBUTE_UNUSED,
|
|
struct elf_link_hash_entry *h)
|
|
{
|
|
/* ??? Undefined symbols with PLT entries should be re-defined
|
|
to be the PLT entry. */
|
|
|
|
/* If this is a weak symbol, and there is a real definition, the
|
|
processor independent code will have arranged for us to see the
|
|
real definition first, and we can just use the same value. */
|
|
if (h->is_weakalias)
|
|
{
|
|
struct elf_link_hash_entry *def = weakdef (h);
|
|
BFD_ASSERT (def->root.type == bfd_link_hash_defined);
|
|
h->root.u.def.section = def->root.u.def.section;
|
|
h->root.u.def.value = def->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 bool
|
|
elf64_ia64_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
|
|
struct bfd_link_info *info)
|
|
{
|
|
struct elf64_ia64_allocate_data data;
|
|
struct elf64_ia64_link_hash_table *ia64_info;
|
|
asection *sec;
|
|
bfd *dynobj;
|
|
struct elf_link_hash_table *hash_table;
|
|
|
|
hash_table = elf_hash_table (info);
|
|
dynobj = hash_table->dynobj;
|
|
ia64_info = elf64_ia64_hash_table (info);
|
|
if (ia64_info == NULL)
|
|
return false;
|
|
BFD_ASSERT(dynobj != NULL);
|
|
data.info = info;
|
|
|
|
/* Allocate the GOT entries. */
|
|
|
|
if (ia64_info->root.sgot)
|
|
{
|
|
data.ofs = 0;
|
|
elf64_ia64_dyn_sym_traverse (ia64_info, allocate_global_data_got, &data);
|
|
elf64_ia64_dyn_sym_traverse (ia64_info, allocate_global_fptr_got, &data);
|
|
elf64_ia64_dyn_sym_traverse (ia64_info, allocate_local_got, &data);
|
|
ia64_info->root.sgot->size = data.ofs;
|
|
}
|
|
|
|
/* Allocate the FPTR entries. */
|
|
|
|
if (ia64_info->fptr_sec)
|
|
{
|
|
data.ofs = 0;
|
|
elf64_ia64_dyn_sym_traverse (ia64_info, allocate_fptr, &data);
|
|
ia64_info->fptr_sec->size = data.ofs;
|
|
}
|
|
|
|
/* Now that we've seen all of the input files, we can decide which
|
|
symbols need plt entries. Allocate the minimal PLT entries first.
|
|
We do this even though dynamic_sections_created may be FALSE, because
|
|
this has the side-effect of clearing want_plt and want_plt2. */
|
|
|
|
data.ofs = 0;
|
|
elf64_ia64_dyn_sym_traverse (ia64_info, allocate_plt_entries, &data);
|
|
|
|
/* Align the pointer for the plt2 entries. */
|
|
data.ofs = (data.ofs + 31) & (bfd_vma) -32;
|
|
|
|
elf64_ia64_dyn_sym_traverse (ia64_info, allocate_plt2_entries, &data);
|
|
if (data.ofs != 0 || ia64_info->root.dynamic_sections_created)
|
|
{
|
|
/* FIXME: we always reserve the memory for dynamic linker even if
|
|
there are no PLT entries since dynamic linker may assume the
|
|
reserved memory always exists. */
|
|
|
|
BFD_ASSERT (ia64_info->root.dynamic_sections_created);
|
|
|
|
ia64_info->root.splt->size = data.ofs;
|
|
}
|
|
|
|
/* Allocate the PLTOFF entries. */
|
|
|
|
if (ia64_info->pltoff_sec)
|
|
{
|
|
data.ofs = 0;
|
|
elf64_ia64_dyn_sym_traverse (ia64_info, allocate_pltoff_entries, &data);
|
|
ia64_info->pltoff_sec->size = data.ofs;
|
|
}
|
|
|
|
if (ia64_info->root.dynamic_sections_created)
|
|
{
|
|
/* Allocate space for the dynamic relocations that turned out to be
|
|
required. */
|
|
elf64_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)
|
|
{
|
|
bool strip;
|
|
|
|
if (!(sec->flags & SEC_LINKER_CREATED))
|
|
continue;
|
|
|
|
/* If we don't need this section, strip it from the output file.
|
|
There were several sections primarily related to dynamic
|
|
linking that must be create before the linker maps input
|
|
sections to output sections. The linker does that before
|
|
bfd_elf_size_dynamic_sections is called, and it is that
|
|
function which decides whether anything needs to go into
|
|
these sections. */
|
|
|
|
strip = (sec->size == 0);
|
|
|
|
if (sec == ia64_info->root.sgot)
|
|
strip = false;
|
|
else if (sec == ia64_info->root.srelgot)
|
|
{
|
|
if (strip)
|
|
ia64_info->root.srelgot = NULL;
|
|
else
|
|
/* We use the reloc_count field as a counter if we need to
|
|
copy relocs into the output file. */
|
|
sec->reloc_count = 0;
|
|
}
|
|
else if (sec == ia64_info->fptr_sec)
|
|
{
|
|
if (strip)
|
|
ia64_info->fptr_sec = NULL;
|
|
}
|
|
else if (sec == ia64_info->rel_fptr_sec)
|
|
{
|
|
if (strip)
|
|
ia64_info->rel_fptr_sec = NULL;
|
|
else
|
|
/* We use the reloc_count field as a counter if we need to
|
|
copy relocs into the output file. */
|
|
sec->reloc_count = 0;
|
|
}
|
|
else if (sec == ia64_info->root.splt)
|
|
{
|
|
if (strip)
|
|
ia64_info->root.splt = NULL;
|
|
}
|
|
else if (sec == ia64_info->pltoff_sec)
|
|
{
|
|
if (strip)
|
|
ia64_info->pltoff_sec = NULL;
|
|
}
|
|
else if (sec == ia64_info->fixups_sec)
|
|
{
|
|
if (strip)
|
|
ia64_info->fixups_sec = NULL;
|
|
}
|
|
else if (sec == ia64_info->transfer_sec)
|
|
{
|
|
;
|
|
}
|
|
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_section_name (sec);
|
|
|
|
if (strcmp (name, ".got.plt") == 0)
|
|
strip = false;
|
|
else if (startswith (name, ".rel"))
|
|
{
|
|
if (!strip)
|
|
{
|
|
/* We use the reloc_count field as a counter if we need to
|
|
copy relocs into the output file. */
|
|
sec->reloc_count = 0;
|
|
}
|
|
}
|
|
else
|
|
continue;
|
|
}
|
|
|
|
if (strip)
|
|
sec->flags |= SEC_EXCLUDE;
|
|
else
|
|
{
|
|
/* Allocate memory for the section contents. */
|
|
sec->contents = (bfd_byte *) bfd_zalloc (dynobj, sec->size);
|
|
if (sec->contents == NULL && sec->size != 0)
|
|
return false;
|
|
}
|
|
}
|
|
|
|
if (elf_hash_table (info)->dynamic_sections_created)
|
|
{
|
|
bfd *abfd;
|
|
asection *dynsec;
|
|
asection *dynstrsec;
|
|
Elf_Internal_Dyn dyn;
|
|
const struct elf_backend_data *bed;
|
|
unsigned int shl_num = 0;
|
|
bfd_vma fixups_off = 0;
|
|
bfd_vma strdyn_off;
|
|
unsigned int time_hi, time_lo;
|
|
|
|
/* The .dynamic section must exist and be empty. */
|
|
dynsec = bfd_get_linker_section (hash_table->dynobj, ".dynamic");
|
|
BFD_ASSERT (dynsec != NULL);
|
|
BFD_ASSERT (dynsec->size == 0);
|
|
|
|
dynstrsec = bfd_get_linker_section (hash_table->dynobj, ".vmsdynstr");
|
|
BFD_ASSERT (dynstrsec != NULL);
|
|
BFD_ASSERT (dynstrsec->size == 0);
|
|
dynstrsec->size = 1; /* Initial blank. */
|
|
|
|
/* Ident + link time. */
|
|
vms_get_time (&time_hi, &time_lo);
|
|
|
|
if (!_bfd_elf_add_dynamic_entry (info, DT_IA_64_VMS_IDENT, 0))
|
|
return false;
|
|
if (!_bfd_elf_add_dynamic_entry (info, DT_IA_64_VMS_LINKTIME,
|
|
((uint64_t) time_hi << 32)
|
|
+ time_lo))
|
|
return false;
|
|
|
|
/* Strtab. */
|
|
strdyn_off = dynsec->size;
|
|
if (!_bfd_elf_add_dynamic_entry (info, DT_IA_64_VMS_STRTAB_OFFSET, 0))
|
|
return false;
|
|
if (!_bfd_elf_add_dynamic_entry (info, DT_STRSZ, 0))
|
|
return false;
|
|
|
|
/* PLTGOT */
|
|
if (!_bfd_elf_add_dynamic_entry (info, DT_IA_64_VMS_PLTGOT_SEG, 0))
|
|
return false;
|
|
if (!_bfd_elf_add_dynamic_entry (info, DT_IA_64_VMS_PLTGOT_OFFSET, 0))
|
|
return false;
|
|
|
|
/* Misc. */
|
|
if (!_bfd_elf_add_dynamic_entry (info, DT_IA_64_VMS_FPMODE, 0x9800000))
|
|
return false;
|
|
if (!_bfd_elf_add_dynamic_entry (info, DT_IA_64_VMS_LNKFLAGS,
|
|
VMS_LF_IMGSTA | VMS_LF_MAIN))
|
|
return false;
|
|
|
|
/* Add entries for shared libraries. */
|
|
for (abfd = info->input_bfds; abfd; abfd = abfd->link.next)
|
|
{
|
|
char *soname;
|
|
size_t soname_len;
|
|
bfd_size_type strindex;
|
|
bfd_byte *newcontents;
|
|
bfd_vma fixups_shl_off;
|
|
|
|
if (!(abfd->flags & DYNAMIC))
|
|
continue;
|
|
BFD_ASSERT (abfd->xvec == output_bfd->xvec);
|
|
|
|
if (!_bfd_elf_add_dynamic_entry (info, DT_IA_64_VMS_NEEDED_IDENT,
|
|
elf_ia64_vms_ident (abfd)))
|
|
return false;
|
|
|
|
soname = vms_get_module_name (bfd_get_filename (abfd), true);
|
|
if (soname == NULL)
|
|
return false;
|
|
strindex = dynstrsec->size;
|
|
soname_len = strlen (soname) + 1;
|
|
newcontents = (bfd_byte *) bfd_realloc (dynstrsec->contents,
|
|
strindex + soname_len);
|
|
if (newcontents == NULL)
|
|
return false;
|
|
memcpy (newcontents + strindex, soname, soname_len);
|
|
dynstrsec->size += soname_len;
|
|
dynstrsec->contents = newcontents;
|
|
|
|
if (!_bfd_elf_add_dynamic_entry (info, DT_NEEDED, strindex))
|
|
return false;
|
|
|
|
if (!_bfd_elf_add_dynamic_entry (info, DT_IA_64_VMS_FIXUP_NEEDED,
|
|
shl_num))
|
|
return false;
|
|
shl_num++;
|
|
|
|
/* The fixups_off was in fact containing the size of the fixup
|
|
section. Remap into the offset. */
|
|
fixups_shl_off = elf_ia64_vms_tdata (abfd)->fixups_off;
|
|
elf_ia64_vms_tdata (abfd)->fixups_off = fixups_off;
|
|
|
|
if (!_bfd_elf_add_dynamic_entry
|
|
(info, DT_IA_64_VMS_FIXUP_RELA_CNT,
|
|
fixups_shl_off / sizeof (Elf64_External_VMS_IMAGE_FIXUP)))
|
|
return false;
|
|
if (!_bfd_elf_add_dynamic_entry (info, DT_IA_64_VMS_FIXUP_RELA_OFF,
|
|
fixups_off))
|
|
return false;
|
|
fixups_off += fixups_shl_off;
|
|
}
|
|
|
|
/* Unwind. */
|
|
if (!_bfd_elf_add_dynamic_entry (info, DT_IA_64_VMS_UNWINDSZ, 0))
|
|
return false;
|
|
if (!_bfd_elf_add_dynamic_entry (info, DT_IA_64_VMS_UNWIND_CODSEG, 0))
|
|
return false;
|
|
if (!_bfd_elf_add_dynamic_entry (info, DT_IA_64_VMS_UNWIND_INFOSEG, 0))
|
|
return false;
|
|
if (!_bfd_elf_add_dynamic_entry (info, DT_IA_64_VMS_UNWIND_OFFSET, 0))
|
|
return false;
|
|
if (!_bfd_elf_add_dynamic_entry (info, DT_IA_64_VMS_UNWIND_SEG, 0))
|
|
return false;
|
|
|
|
if (!_bfd_elf_add_dynamic_entry (info, DT_NULL, 0xdead))
|
|
return false;
|
|
|
|
/* Fix the strtab entries. */
|
|
bed = get_elf_backend_data (hash_table->dynobj);
|
|
|
|
if (dynstrsec->size > 1)
|
|
dynstrsec->contents[0] = 0;
|
|
else
|
|
dynstrsec->size = 0;
|
|
|
|
/* Note: one 'spare' (ie DT_NULL) entry is added by
|
|
bfd_elf_size_dynsym_hash_dynstr. */
|
|
dyn.d_tag = DT_IA_64_VMS_STRTAB_OFFSET;
|
|
dyn.d_un.d_val = dynsec->size /* + sizeof (Elf64_External_Dyn) */;
|
|
bed->s->swap_dyn_out (hash_table->dynobj, &dyn,
|
|
dynsec->contents + strdyn_off);
|
|
|
|
dyn.d_tag = DT_STRSZ;
|
|
dyn.d_un.d_val = dynstrsec->size;
|
|
bed->s->swap_dyn_out (hash_table->dynobj, &dyn,
|
|
dynsec->contents + strdyn_off + bed->s->sizeof_dyn);
|
|
|
|
elf_ia64_vms_tdata (output_bfd)->needed_count = shl_num;
|
|
|
|
/* Note section. */
|
|
if (!create_ia64_vms_notes (output_bfd, info, time_hi, time_lo))
|
|
return false;
|
|
}
|
|
|
|
/* ??? Perhaps force __gp local. */
|
|
|
|
return true;
|
|
}
|
|
|
|
static void
|
|
elf64_ia64_install_fixup (bfd *output_bfd,
|
|
struct elf64_ia64_link_hash_table *ia64_info,
|
|
struct elf_link_hash_entry *h,
|
|
unsigned int type, asection *sec, bfd_vma offset,
|
|
bfd_vma addend)
|
|
{
|
|
asection *relsec;
|
|
Elf64_External_VMS_IMAGE_FIXUP *fixup;
|
|
struct elf64_ia64_link_hash_entry *h_ia64;
|
|
bfd_vma fixoff;
|
|
Elf_Internal_Phdr *phdr;
|
|
|
|
if (h == NULL || !h->def_dynamic)
|
|
abort ();
|
|
|
|
h_ia64 = (struct elf64_ia64_link_hash_entry *) h;
|
|
fixoff = elf_ia64_vms_tdata (h_ia64->shl)->fixups_off;
|
|
elf_ia64_vms_tdata (h_ia64->shl)->fixups_off +=
|
|
sizeof (Elf64_External_VMS_IMAGE_FIXUP);
|
|
relsec = ia64_info->fixups_sec;
|
|
|
|
fixup = (Elf64_External_VMS_IMAGE_FIXUP *)(relsec->contents + fixoff);
|
|
offset += sec->output_section->vma + sec->output_offset;
|
|
|
|
/* FIXME: this is slow. We should cache the last one used, or create a
|
|
map. */
|
|
phdr = _bfd_elf_find_segment_containing_section
|
|
(output_bfd, sec->output_section);
|
|
BFD_ASSERT (phdr != NULL);
|
|
|
|
bfd_putl64 (offset - phdr->p_vaddr, fixup->fixup_offset);
|
|
bfd_putl32 (type, fixup->type);
|
|
bfd_putl32 (phdr - elf_tdata (output_bfd)->phdr, fixup->fixup_seg);
|
|
bfd_putl64 (addend, fixup->addend);
|
|
bfd_putl32 (h->root.u.def.value, fixup->symvec_index);
|
|
bfd_putl32 (2, fixup->data_type);
|
|
}
|
|
|
|
/* Store an entry for target address TARGET_ADDR in the linkage table
|
|
and return the gp-relative address of the linkage table entry. */
|
|
|
|
static bfd_vma
|
|
set_got_entry (bfd *abfd, struct bfd_link_info *info,
|
|
struct elf64_ia64_dyn_sym_info *dyn_i,
|
|
bfd_vma addend, bfd_vma value, unsigned int dyn_r_type)
|
|
{
|
|
struct elf64_ia64_link_hash_table *ia64_info;
|
|
asection *got_sec;
|
|
bool done;
|
|
bfd_vma got_offset;
|
|
|
|
ia64_info = elf64_ia64_hash_table (info);
|
|
if (ia64_info == NULL)
|
|
return 0;
|
|
|
|
got_sec = ia64_info->root.sgot;
|
|
|
|
switch (dyn_r_type)
|
|
{
|
|
case R_IA64_TPREL64LSB:
|
|
case R_IA64_DTPMOD64LSB:
|
|
case R_IA64_DTPREL32LSB:
|
|
case R_IA64_DTPREL64LSB:
|
|
abort ();
|
|
break;
|
|
default:
|
|
done = dyn_i->got_done;
|
|
dyn_i->got_done = true;
|
|
got_offset = dyn_i->got_offset;
|
|
break;
|
|
}
|
|
|
|
BFD_ASSERT ((got_offset & 7) == 0);
|
|
|
|
if (! done)
|
|
{
|
|
/* Store the target address in the linkage table entry. */
|
|
bfd_put_64 (abfd, value, got_sec->contents + got_offset);
|
|
|
|
/* Install a dynamic relocation if needed. */
|
|
if (((bfd_link_pic (info)
|
|
&& (!dyn_i->h
|
|
|| ELF_ST_VISIBILITY (dyn_i->h->other) == STV_DEFAULT
|
|
|| dyn_i->h->root.type != bfd_link_hash_undefweak))
|
|
|| elf64_ia64_dynamic_symbol_p (dyn_i->h))
|
|
&& (!dyn_i->want_ltoff_fptr
|
|
|| !bfd_link_pie (info)
|
|
|| !dyn_i->h
|
|
|| dyn_i->h->root.type != bfd_link_hash_undefweak))
|
|
{
|
|
if (!dyn_i->h || !dyn_i->h->def_dynamic)
|
|
{
|
|
dyn_r_type = R_IA64_REL64LSB;
|
|
addend = value;
|
|
}
|
|
|
|
/* VMS: install a FIX32 or FIX64. */
|
|
switch (dyn_r_type)
|
|
{
|
|
case R_IA64_DIR32LSB:
|
|
case R_IA64_FPTR32LSB:
|
|
dyn_r_type = R_IA64_VMS_FIX32;
|
|
break;
|
|
case R_IA64_DIR64LSB:
|
|
case R_IA64_FPTR64LSB:
|
|
dyn_r_type = R_IA64_VMS_FIX64;
|
|
break;
|
|
default:
|
|
BFD_ASSERT (false);
|
|
break;
|
|
}
|
|
elf64_ia64_install_fixup
|
|
(info->output_bfd, ia64_info, dyn_i->h,
|
|
dyn_r_type, got_sec, got_offset, addend);
|
|
}
|
|
}
|
|
|
|
/* Return the address of the linkage table entry. */
|
|
value = (got_sec->output_section->vma
|
|
+ got_sec->output_offset
|
|
+ got_offset);
|
|
|
|
return value;
|
|
}
|
|
|
|
/* Fill in a function descriptor consisting of the function's code
|
|
address and its global pointer. Return the descriptor's address. */
|
|
|
|
static bfd_vma
|
|
set_fptr_entry (bfd *abfd, struct bfd_link_info *info,
|
|
struct elf64_ia64_dyn_sym_info *dyn_i,
|
|
bfd_vma value)
|
|
{
|
|
struct elf64_ia64_link_hash_table *ia64_info;
|
|
asection *fptr_sec;
|
|
|
|
ia64_info = elf64_ia64_hash_table (info);
|
|
if (ia64_info == NULL)
|
|
return 0;
|
|
|
|
fptr_sec = ia64_info->fptr_sec;
|
|
|
|
if (!dyn_i->fptr_done)
|
|
{
|
|
dyn_i->fptr_done = 1;
|
|
|
|
/* Fill in the function descriptor. */
|
|
bfd_put_64 (abfd, value, fptr_sec->contents + dyn_i->fptr_offset);
|
|
bfd_put_64 (abfd, _bfd_get_gp_value (abfd),
|
|
fptr_sec->contents + dyn_i->fptr_offset + 8);
|
|
}
|
|
|
|
/* Return the descriptor's address. */
|
|
value = (fptr_sec->output_section->vma
|
|
+ fptr_sec->output_offset
|
|
+ dyn_i->fptr_offset);
|
|
|
|
return value;
|
|
}
|
|
|
|
/* Fill in a PLTOFF entry consisting of the function's code address
|
|
and its global pointer. Return the descriptor's address. */
|
|
|
|
static bfd_vma
|
|
set_pltoff_entry (bfd *abfd, struct bfd_link_info *info,
|
|
struct elf64_ia64_dyn_sym_info *dyn_i,
|
|
bfd_vma value, bool is_plt)
|
|
{
|
|
struct elf64_ia64_link_hash_table *ia64_info;
|
|
asection *pltoff_sec;
|
|
|
|
ia64_info = elf64_ia64_hash_table (info);
|
|
if (ia64_info == NULL)
|
|
return 0;
|
|
|
|
pltoff_sec = ia64_info->pltoff_sec;
|
|
|
|
/* Don't do anything if this symbol uses a real PLT entry. In
|
|
that case, we'll fill this in during finish_dynamic_symbol. */
|
|
if ((! dyn_i->want_plt || is_plt)
|
|
&& !dyn_i->pltoff_done)
|
|
{
|
|
bfd_vma gp = _bfd_get_gp_value (abfd);
|
|
|
|
/* Fill in the function descriptor. */
|
|
bfd_put_64 (abfd, value, pltoff_sec->contents + dyn_i->pltoff_offset);
|
|
bfd_put_64 (abfd, gp, pltoff_sec->contents + dyn_i->pltoff_offset + 8);
|
|
|
|
/* Install dynamic relocations if needed. */
|
|
if (!is_plt
|
|
&& bfd_link_pic (info)
|
|
&& (!dyn_i->h
|
|
|| ELF_ST_VISIBILITY (dyn_i->h->other) == STV_DEFAULT
|
|
|| dyn_i->h->root.type != bfd_link_hash_undefweak))
|
|
{
|
|
/* VMS: */
|
|
abort ();
|
|
}
|
|
|
|
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;
|
|
}
|
|
|
|
/* Called through qsort to sort the .IA_64.unwind section during a
|
|
non-relocatable link. Set elf64_ia64_unwind_entry_compare_bfd
|
|
to the output bfd so we can do proper endianness frobbing. */
|
|
|
|
static bfd *elf64_ia64_unwind_entry_compare_bfd;
|
|
|
|
static int
|
|
elf64_ia64_unwind_entry_compare (const void * a, const void * b)
|
|
{
|
|
bfd_vma av, bv;
|
|
|
|
av = bfd_get_64 (elf64_ia64_unwind_entry_compare_bfd, a);
|
|
bv = bfd_get_64 (elf64_ia64_unwind_entry_compare_bfd, b);
|
|
|
|
return (av < bv ? -1 : av > bv ? 1 : 0);
|
|
}
|
|
|
|
/* Make sure we've got ourselves a nice fat __gp value. */
|
|
static bool
|
|
elf64_ia64_choose_gp (bfd *abfd, struct bfd_link_info *info, bool final)
|
|
{
|
|
bfd_vma min_vma = (bfd_vma) -1, max_vma = 0;
|
|
bfd_vma min_short_vma = min_vma, max_short_vma = 0;
|
|
struct elf_link_hash_entry *gp;
|
|
bfd_vma gp_val;
|
|
asection *os;
|
|
struct elf64_ia64_link_hash_table *ia64_info;
|
|
|
|
ia64_info = elf64_ia64_hash_table (info);
|
|
if (ia64_info == NULL)
|
|
return false;
|
|
|
|
/* Find the min and max vma of all sections marked short. Also collect
|
|
min and max vma of any type, for use in selecting a nice gp. */
|
|
for (os = abfd->sections; os ; os = os->next)
|
|
{
|
|
bfd_vma lo, hi;
|
|
|
|
if ((os->flags & SEC_ALLOC) == 0)
|
|
continue;
|
|
|
|
lo = os->vma;
|
|
/* When this function is called from elfNN_ia64_final_link
|
|
the correct value to use is os->size. When called from
|
|
elfNN_ia64_relax_section we are in the middle of section
|
|
sizing; some sections will already have os->size set, others
|
|
will have os->size zero and os->rawsize the previous size. */
|
|
hi = os->vma + (!final && os->rawsize ? os->rawsize : os->size);
|
|
if (hi < lo)
|
|
hi = (bfd_vma) -1;
|
|
|
|
if (min_vma > lo)
|
|
min_vma = lo;
|
|
if (max_vma < hi)
|
|
max_vma = hi;
|
|
if (os->flags & SEC_SMALL_DATA)
|
|
{
|
|
if (min_short_vma > lo)
|
|
min_short_vma = lo;
|
|
if (max_short_vma < hi)
|
|
max_short_vma = hi;
|
|
}
|
|
}
|
|
|
|
if (ia64_info->min_short_sec)
|
|
{
|
|
if (min_short_vma
|
|
> (ia64_info->min_short_sec->vma
|
|
+ ia64_info->min_short_offset))
|
|
min_short_vma = (ia64_info->min_short_sec->vma
|
|
+ ia64_info->min_short_offset);
|
|
if (max_short_vma
|
|
< (ia64_info->max_short_sec->vma
|
|
+ ia64_info->max_short_offset))
|
|
max_short_vma = (ia64_info->max_short_sec->vma
|
|
+ ia64_info->max_short_offset);
|
|
}
|
|
|
|
/* See if the user wants to force a value. */
|
|
gp = elf_link_hash_lookup (elf_hash_table (info), "__gp", false,
|
|
false, false);
|
|
|
|
if (gp
|
|
&& (gp->root.type == bfd_link_hash_defined
|
|
|| gp->root.type == bfd_link_hash_defweak))
|
|
{
|
|
asection *gp_sec = gp->root.u.def.section;
|
|
gp_val = (gp->root.u.def.value
|
|
+ gp_sec->output_section->vma
|
|
+ gp_sec->output_offset);
|
|
}
|
|
else
|
|
{
|
|
/* Pick a sensible value. */
|
|
|
|
if (ia64_info->min_short_sec)
|
|
{
|
|
bfd_vma short_range = max_short_vma - min_short_vma;
|
|
|
|
/* If min_short_sec is set, pick one in the middle bewteen
|
|
min_short_vma and max_short_vma. */
|
|
if (short_range >= 0x400000)
|
|
goto overflow;
|
|
gp_val = min_short_vma + short_range / 2;
|
|
}
|
|
else
|
|
{
|
|
asection *got_sec = ia64_info->root.sgot;
|
|
|
|
/* Start with just the address of the .got. */
|
|
if (got_sec)
|
|
gp_val = got_sec->output_section->vma;
|
|
else if (max_short_vma != 0)
|
|
gp_val = min_short_vma;
|
|
else if (max_vma - min_vma < 0x200000)
|
|
gp_val = min_vma;
|
|
else
|
|
gp_val = max_vma - 0x200000 + 8;
|
|
}
|
|
|
|
/* If it is possible to address the entire image, but we
|
|
don't with the choice above, adjust. */
|
|
if (max_vma - min_vma < 0x400000
|
|
&& (max_vma - gp_val >= 0x200000
|
|
|| gp_val - min_vma > 0x200000))
|
|
gp_val = min_vma + 0x200000;
|
|
else if (max_short_vma != 0)
|
|
{
|
|
/* If we don't cover all the short data, adjust. */
|
|
if (max_short_vma - gp_val >= 0x200000)
|
|
gp_val = min_short_vma + 0x200000;
|
|
|
|
/* If we're addressing stuff past the end, adjust back. */
|
|
if (gp_val > max_vma)
|
|
gp_val = max_vma - 0x200000 + 8;
|
|
}
|
|
}
|
|
|
|
/* Validate whether all SHF_IA_64_SHORT sections are within
|
|
range of the chosen GP. */
|
|
|
|
if (max_short_vma != 0)
|
|
{
|
|
if (max_short_vma - min_short_vma >= 0x400000)
|
|
{
|
|
overflow:
|
|
_bfd_error_handler
|
|
/* xgettext:c-format */
|
|
(_("%pB: short data segment overflowed (%#" PRIx64 " >= 0x400000)"),
|
|
abfd, (uint64_t) (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
|
|
(_("%pB: __gp does not cover short data segment"), abfd);
|
|
return false;
|
|
}
|
|
}
|
|
|
|
_bfd_set_gp_value (abfd, gp_val);
|
|
|
|
return true;
|
|
}
|
|
|
|
static bool
|
|
elf64_ia64_final_link (bfd *abfd, struct bfd_link_info *info)
|
|
{
|
|
struct elf64_ia64_link_hash_table *ia64_info;
|
|
asection *unwind_output_sec;
|
|
|
|
ia64_info = elf64_ia64_hash_table (info);
|
|
if (ia64_info == NULL)
|
|
return false;
|
|
|
|
/* Make sure we've got ourselves a nice fat __gp value. */
|
|
if (!bfd_link_relocatable (info))
|
|
{
|
|
bfd_vma gp_val;
|
|
struct elf_link_hash_entry *gp;
|
|
|
|
/* We assume after gp is set, section size will only decrease. We
|
|
need to adjust gp for it. */
|
|
_bfd_set_gp_value (abfd, 0);
|
|
if (! elf64_ia64_choose_gp (abfd, info, true))
|
|
return false;
|
|
gp_val = _bfd_get_gp_value (abfd);
|
|
|
|
gp = elf_link_hash_lookup (elf_hash_table (info), "__gp", false,
|
|
false, false);
|
|
if (gp)
|
|
{
|
|
gp->root.type = bfd_link_hash_defined;
|
|
gp->root.u.def.value = gp_val;
|
|
gp->root.u.def.section = bfd_abs_section_ptr;
|
|
}
|
|
}
|
|
|
|
/* If we're producing a final executable, we need to sort the contents
|
|
of the .IA_64.unwind section. Force this section to be relocated
|
|
into memory rather than written immediately to the output file. */
|
|
unwind_output_sec = NULL;
|
|
if (!bfd_link_relocatable (info))
|
|
{
|
|
asection *s = bfd_get_section_by_name (abfd, ELF_STRING_ia64_unwind);
|
|
if (s)
|
|
{
|
|
unwind_output_sec = s->output_section;
|
|
unwind_output_sec->contents
|
|
= bfd_malloc (unwind_output_sec->size);
|
|
if (unwind_output_sec->contents == NULL)
|
|
return false;
|
|
}
|
|
}
|
|
|
|
/* Invoke the regular ELF backend linker to do all the work. */
|
|
if (!bfd_elf_final_link (abfd, info))
|
|
return false;
|
|
|
|
if (unwind_output_sec)
|
|
{
|
|
elf64_ia64_unwind_entry_compare_bfd = abfd;
|
|
qsort (unwind_output_sec->contents,
|
|
(size_t) (unwind_output_sec->size / 24),
|
|
24,
|
|
elf64_ia64_unwind_entry_compare);
|
|
|
|
if (! bfd_set_section_contents (abfd, unwind_output_sec,
|
|
unwind_output_sec->contents, (bfd_vma) 0,
|
|
unwind_output_sec->size))
|
|
return false;
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
static int
|
|
elf64_ia64_relocate_section (bfd *output_bfd,
|
|
struct bfd_link_info *info,
|
|
bfd *input_bfd,
|
|
asection *input_section,
|
|
bfd_byte *contents,
|
|
Elf_Internal_Rela *relocs,
|
|
Elf_Internal_Sym *local_syms,
|
|
asection **local_sections)
|
|
{
|
|
struct elf64_ia64_link_hash_table *ia64_info;
|
|
Elf_Internal_Shdr *symtab_hdr;
|
|
Elf_Internal_Rela *rel;
|
|
Elf_Internal_Rela *relend;
|
|
bool ret_val = true; /* for non-fatal errors */
|
|
bfd_vma gp_val;
|
|
|
|
symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
|
|
ia64_info = elf64_ia64_hash_table (info);
|
|
if (ia64_info == NULL)
|
|
return false;
|
|
|
|
/* Infect various flags from the input section to the output section. */
|
|
if (bfd_link_relocatable (info))
|
|
{
|
|
bfd_vma flags;
|
|
|
|
flags = elf_section_data(input_section)->this_hdr.sh_flags;
|
|
flags &= SHF_IA_64_NORECOV;
|
|
|
|
elf_section_data(input_section->output_section)
|
|
->this_hdr.sh_flags |= flags;
|
|
}
|
|
|
|
gp_val = _bfd_get_gp_value (output_bfd);
|
|
|
|
rel = relocs;
|
|
relend = relocs + input_section->reloc_count;
|
|
for (; rel < relend; ++rel)
|
|
{
|
|
struct elf_link_hash_entry *h;
|
|
struct elf64_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;
|
|
bool dynamic_symbol_p;
|
|
bool undef_weak_ref;
|
|
|
|
r_type = ELF64_R_TYPE (rel->r_info);
|
|
if (r_type > R_IA64_MAX_RELOC_CODE)
|
|
{
|
|
/* xgettext:c-format */
|
|
_bfd_error_handler (_("%pB: unsupported relocation type %#x"),
|
|
input_bfd, (int) r_type);
|
|
bfd_set_error (bfd_error_bad_value);
|
|
ret_val = false;
|
|
continue;
|
|
}
|
|
|
|
howto = ia64_elf_lookup_howto (r_type);
|
|
if (howto == NULL)
|
|
{
|
|
ret_val = false;
|
|
continue;
|
|
}
|
|
r_symndx = ELF64_R_SYM (rel->r_info);
|
|
h = NULL;
|
|
sym = NULL;
|
|
sym_sec = NULL;
|
|
undef_weak_ref = false;
|
|
|
|
if (r_symndx < symtab_hdr->sh_info)
|
|
{
|
|
/* Reloc against local symbol. */
|
|
asection *msec;
|
|
sym = local_syms + r_symndx;
|
|
sym_sec = local_sections[r_symndx];
|
|
msec = sym_sec;
|
|
value = _bfd_elf_rela_local_sym (output_bfd, sym, &msec, rel);
|
|
if (!bfd_link_relocatable (info)
|
|
&& (sym_sec->flags & SEC_MERGE) != 0
|
|
&& ELF_ST_TYPE (sym->st_info) == STT_SECTION
|
|
&& sym_sec->sec_info_type == SEC_INFO_TYPE_MERGE)
|
|
{
|
|
struct elf64_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 elf64_ia64_dyn_sym_info *dynent;
|
|
unsigned int count;
|
|
|
|
for (count = loc_h->count, dynent = loc_h->info;
|
|
count != 0;
|
|
count--, dynent++)
|
|
{
|
|
msec = sym_sec;
|
|
dynent->addend =
|
|
_bfd_merged_section_offset (output_bfd, &msec,
|
|
elf_section_data (msec)->
|
|
sec_info,
|
|
sym->st_value
|
|
+ dynent->addend);
|
|
dynent->addend -= sym->st_value;
|
|
dynent->addend += msec->output_section->vma
|
|
+ msec->output_offset
|
|
- sym_sec->output_section->vma
|
|
- sym_sec->output_offset;
|
|
}
|
|
|
|
/* We may have introduced duplicated entries. We need
|
|
to remove them properly. */
|
|
count = sort_dyn_sym_info (loc_h->info, loc_h->count);
|
|
if (count != loc_h->count)
|
|
{
|
|
loc_h->count = count;
|
|
loc_h->sorted_count = count;
|
|
}
|
|
|
|
loc_h->sec_merge_done = 1;
|
|
}
|
|
}
|
|
}
|
|
else
|
|
{
|
|
bool unresolved_reloc;
|
|
bool warned, ignored;
|
|
struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (input_bfd);
|
|
|
|
RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
|
|
r_symndx, symtab_hdr, sym_hashes,
|
|
h, sym_sec, value,
|
|
unresolved_reloc, warned, ignored);
|
|
|
|
if (h->root.type == bfd_link_hash_undefweak)
|
|
undef_weak_ref = true;
|
|
else if (warned)
|
|
continue;
|
|
}
|
|
|
|
/* For relocs against symbols from removed linkonce sections,
|
|
or sections discarded by a linker script, we just want the
|
|
section contents zeroed. Avoid any special processing. */
|
|
if (sym_sec != NULL && discarded_section (sym_sec))
|
|
RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section,
|
|
rel, 1, relend, howto, 0, contents);
|
|
|
|
if (bfd_link_relocatable (info))
|
|
continue;
|
|
|
|
hit_addr = contents + rel->r_offset;
|
|
value += rel->r_addend;
|
|
dynamic_symbol_p = elf64_ia64_dynamic_symbol_p (h);
|
|
|
|
switch (r_type)
|
|
{
|
|
case R_IA64_NONE:
|
|
case R_IA64_LDXMOV:
|
|
continue;
|
|
|
|
case R_IA64_IMM14:
|
|
case R_IA64_IMM22:
|
|
case R_IA64_IMM64:
|
|
case R_IA64_DIR32MSB:
|
|
case R_IA64_DIR32LSB:
|
|
case R_IA64_DIR64MSB:
|
|
case R_IA64_DIR64LSB:
|
|
/* Install a dynamic relocation for this reloc. */
|
|
if ((dynamic_symbol_p || bfd_link_pic (info))
|
|
&& r_symndx != 0
|
|
&& (input_section->flags & SEC_ALLOC) != 0)
|
|
{
|
|
unsigned int dyn_r_type;
|
|
bfd_vma addend;
|
|
|
|
switch (r_type)
|
|
{
|
|
case R_IA64_IMM14:
|
|
case R_IA64_IMM22:
|
|
case R_IA64_IMM64:
|
|
/* ??? People shouldn't be doing non-pic code in
|
|
shared libraries nor dynamic executables. */
|
|
_bfd_error_handler
|
|
/* xgettext:c-format */
|
|
(_("%pB: non-pic code with imm relocation against"
|
|
" dynamic symbol `%s'"),
|
|
input_bfd,
|
|
h ? h->root.root.string
|
|
: bfd_elf_sym_name (input_bfd, symtab_hdr, sym,
|
|
sym_sec));
|
|
ret_val = false;
|
|
continue;
|
|
|
|
default:
|
|
break;
|
|
}
|
|
|
|
/* If we don't need dynamic symbol lookup, find a
|
|
matching RELATIVE relocation. */
|
|
dyn_r_type = r_type;
|
|
if (dynamic_symbol_p)
|
|
{
|
|
addend = rel->r_addend;
|
|
value = 0;
|
|
}
|
|
else
|
|
{
|
|
addend = value;
|
|
}
|
|
|
|
/* VMS: install a FIX64. */
|
|
switch (dyn_r_type)
|
|
{
|
|
case R_IA64_DIR32LSB:
|
|
dyn_r_type = R_IA64_VMS_FIX32;
|
|
break;
|
|
case R_IA64_DIR64LSB:
|
|
dyn_r_type = R_IA64_VMS_FIX64;
|
|
break;
|
|
default:
|
|
BFD_ASSERT (false);
|
|
break;
|
|
}
|
|
elf64_ia64_install_fixup
|
|
(output_bfd, ia64_info, h,
|
|
dyn_r_type, input_section, rel->r_offset, addend);
|
|
r = bfd_reloc_ok;
|
|
break;
|
|
}
|
|
/* Fall through. */
|
|
|
|
case R_IA64_LTV32MSB:
|
|
case R_IA64_LTV32LSB:
|
|
case R_IA64_LTV64MSB:
|
|
case R_IA64_LTV64LSB:
|
|
r = ia64_elf_install_value (hit_addr, value, r_type);
|
|
break;
|
|
|
|
case R_IA64_GPREL22:
|
|
case R_IA64_GPREL64I:
|
|
case R_IA64_GPREL32MSB:
|
|
case R_IA64_GPREL32LSB:
|
|
case R_IA64_GPREL64MSB:
|
|
case R_IA64_GPREL64LSB:
|
|
if (dynamic_symbol_p)
|
|
{
|
|
_bfd_error_handler
|
|
/* xgettext:c-format */
|
|
(_("%pB: @gprel relocation against dynamic symbol %s"),
|
|
input_bfd,
|
|
h ? h->root.root.string
|
|
: bfd_elf_sym_name (input_bfd, symtab_hdr, sym,
|
|
sym_sec));
|
|
ret_val = false;
|
|
continue;
|
|
}
|
|
value -= gp_val;
|
|
r = ia64_elf_install_value (hit_addr, value, r_type);
|
|
break;
|
|
|
|
case R_IA64_LTOFF22:
|
|
case R_IA64_LTOFF22X:
|
|
case R_IA64_LTOFF64I:
|
|
dyn_i = get_dyn_sym_info (ia64_info, h, input_bfd, rel, false);
|
|
value = set_got_entry (input_bfd, info, dyn_i,
|
|
rel->r_addend, value, R_IA64_DIR64LSB);
|
|
value -= gp_val;
|
|
r = ia64_elf_install_value (hit_addr, value, r_type);
|
|
break;
|
|
|
|
case R_IA64_PLTOFF22:
|
|
case R_IA64_PLTOFF64I:
|
|
case R_IA64_PLTOFF64MSB:
|
|
case R_IA64_PLTOFF64LSB:
|
|
dyn_i = get_dyn_sym_info (ia64_info, h, input_bfd, rel, false);
|
|
value = set_pltoff_entry (output_bfd, info, dyn_i, value, false);
|
|
value -= gp_val;
|
|
r = ia64_elf_install_value (hit_addr, value, r_type);
|
|
break;
|
|
|
|
case R_IA64_FPTR64I:
|
|
case R_IA64_FPTR32MSB:
|
|
case R_IA64_FPTR32LSB:
|
|
case R_IA64_FPTR64MSB:
|
|
case R_IA64_FPTR64LSB:
|
|
dyn_i = get_dyn_sym_info (ia64_info, h, input_bfd, rel, false);
|
|
if (dyn_i->want_fptr)
|
|
{
|
|
if (!undef_weak_ref)
|
|
value = set_fptr_entry (output_bfd, info, dyn_i, value);
|
|
}
|
|
if (!dyn_i->want_fptr || bfd_link_pie (info))
|
|
{
|
|
/* Otherwise, we expect the dynamic linker to create
|
|
the entry. */
|
|
|
|
if (dyn_i->want_fptr)
|
|
{
|
|
if (r_type == R_IA64_FPTR64I)
|
|
{
|
|
/* We can't represent this without a dynamic symbol.
|
|
Adjust the relocation to be against an output
|
|
section symbol, which are always present in the
|
|
dynamic symbol table. */
|
|
/* ??? People shouldn't be doing non-pic code in
|
|
shared libraries. Hork. */
|
|
_bfd_error_handler
|
|
(_("%pB: linking non-pic code in a position independent executable"),
|
|
input_bfd);
|
|
ret_val = false;
|
|
continue;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
value = 0;
|
|
}
|
|
|
|
/* VMS: FIXFD. */
|
|
elf64_ia64_install_fixup
|
|
(output_bfd, ia64_info, h, R_IA64_VMS_FIXFD,
|
|
input_section, rel->r_offset, 0);
|
|
r = bfd_reloc_ok;
|
|
break;
|
|
}
|
|
|
|
r = ia64_elf_install_value (hit_addr, value, r_type);
|
|
break;
|
|
|
|
case R_IA64_LTOFF_FPTR22:
|
|
case R_IA64_LTOFF_FPTR64I:
|
|
case R_IA64_LTOFF_FPTR32MSB:
|
|
case R_IA64_LTOFF_FPTR32LSB:
|
|
case R_IA64_LTOFF_FPTR64MSB:
|
|
case R_IA64_LTOFF_FPTR64LSB:
|
|
dyn_i = get_dyn_sym_info (ia64_info, h, input_bfd, rel, false);
|
|
if (dyn_i->want_fptr)
|
|
{
|
|
BFD_ASSERT (h == NULL || !h->def_dynamic);
|
|
if (!undef_weak_ref)
|
|
value = set_fptr_entry (output_bfd, info, dyn_i, value);
|
|
}
|
|
else
|
|
value = 0;
|
|
|
|
value = set_got_entry (output_bfd, info, dyn_i,
|
|
rel->r_addend, value, R_IA64_FPTR64LSB);
|
|
value -= gp_val;
|
|
r = ia64_elf_install_value (hit_addr, value, r_type);
|
|
break;
|
|
|
|
case R_IA64_PCREL32MSB:
|
|
case R_IA64_PCREL32LSB:
|
|
case R_IA64_PCREL64MSB:
|
|
case R_IA64_PCREL64LSB:
|
|
/* Install a dynamic relocation for this reloc. */
|
|
if (dynamic_symbol_p && r_symndx != 0)
|
|
{
|
|
/* VMS: doesn't exist ??? */
|
|
abort ();
|
|
}
|
|
goto finish_pcrel;
|
|
|
|
case R_IA64_PCREL21B:
|
|
case R_IA64_PCREL60B:
|
|
/* We should have created a PLT entry for any dynamic symbol. */
|
|
dyn_i = NULL;
|
|
if (h)
|
|
dyn_i = get_dyn_sym_info (ia64_info, h, NULL, NULL, false);
|
|
|
|
if (dyn_i && dyn_i->want_plt2)
|
|
{
|
|
/* Should have caught this earlier. */
|
|
BFD_ASSERT (rel->r_addend == 0);
|
|
|
|
value = (ia64_info->root.splt->output_section->vma
|
|
+ ia64_info->root.splt->output_offset
|
|
+ dyn_i->plt2_offset);
|
|
}
|
|
else
|
|
{
|
|
/* Since there's no PLT entry, Validate that this is
|
|
locally defined. */
|
|
BFD_ASSERT (undef_weak_ref || sym_sec->output_section != NULL);
|
|
|
|
/* If the symbol is undef_weak, we shouldn't be trying
|
|
to call it. There's every chance that we'd wind up
|
|
with an out-of-range fixup here. Don't bother setting
|
|
any value at all. */
|
|
if (undef_weak_ref)
|
|
continue;
|
|
}
|
|
goto finish_pcrel;
|
|
|
|
case R_IA64_PCREL21BI:
|
|
case R_IA64_PCREL21F:
|
|
case R_IA64_PCREL21M:
|
|
case R_IA64_PCREL22:
|
|
case R_IA64_PCREL64I:
|
|
/* The PCREL21BI reloc is specifically not intended for use with
|
|
dynamic relocs. PCREL21F and PCREL21M are used for speculation
|
|
fixup code, and thus probably ought not be dynamic. The
|
|
PCREL22 and PCREL64I relocs aren't emitted as dynamic relocs. */
|
|
if (dynamic_symbol_p)
|
|
{
|
|
const char *msg;
|
|
|
|
if (r_type == R_IA64_PCREL21BI)
|
|
/* xgettext:c-format */
|
|
msg = _("%pB: @internal branch to dynamic symbol %s");
|
|
else if (r_type == R_IA64_PCREL21F || r_type == R_IA64_PCREL21M)
|
|
/* xgettext:c-format */
|
|
msg = _("%pB: speculation fixup to dynamic symbol %s");
|
|
else
|
|
/* xgettext:c-format */
|
|
msg = _("%pB: @pcrel relocation against dynamic symbol %s");
|
|
_bfd_error_handler (msg, input_bfd,
|
|
h ? h->root.root.string
|
|
: bfd_elf_sym_name (input_bfd,
|
|
symtab_hdr,
|
|
sym,
|
|
sym_sec));
|
|
ret_val = false;
|
|
continue;
|
|
}
|
|
goto finish_pcrel;
|
|
|
|
finish_pcrel:
|
|
/* Make pc-relative. */
|
|
value -= (input_section->output_section->vma
|
|
+ input_section->output_offset
|
|
+ rel->r_offset) & ~ (bfd_vma) 0x3;
|
|
r = ia64_elf_install_value (hit_addr, value, r_type);
|
|
break;
|
|
|
|
case R_IA64_SEGREL32MSB:
|
|
case R_IA64_SEGREL32LSB:
|
|
case R_IA64_SEGREL64MSB:
|
|
case R_IA64_SEGREL64LSB:
|
|
{
|
|
/* Find the segment that contains the output_section. */
|
|
Elf_Internal_Phdr *p = _bfd_elf_find_segment_containing_section
|
|
(output_bfd, sym_sec->output_section);
|
|
|
|
if (p == NULL)
|
|
{
|
|
r = bfd_reloc_notsupported;
|
|
}
|
|
else
|
|
{
|
|
/* The VMA of the segment is the vaddr of the associated
|
|
program header. */
|
|
if (value > p->p_vaddr)
|
|
value -= p->p_vaddr;
|
|
else
|
|
value = 0;
|
|
r = ia64_elf_install_value (hit_addr, value, r_type);
|
|
}
|
|
break;
|
|
}
|
|
|
|
case R_IA64_SECREL32MSB:
|
|
case R_IA64_SECREL32LSB:
|
|
case R_IA64_SECREL64MSB:
|
|
case R_IA64_SECREL64LSB:
|
|
/* Make output-section relative to section where the symbol
|
|
is defined. PR 475 */
|
|
if (sym_sec)
|
|
value -= sym_sec->output_section->vma;
|
|
r = ia64_elf_install_value (hit_addr, value, r_type);
|
|
break;
|
|
|
|
case R_IA64_IPLTMSB:
|
|
case R_IA64_IPLTLSB:
|
|
/* Install a dynamic relocation for this reloc. */
|
|
if ((dynamic_symbol_p || bfd_link_pic (info))
|
|
&& (input_section->flags & SEC_ALLOC) != 0)
|
|
{
|
|
/* VMS: FIXFD ?? */
|
|
abort ();
|
|
}
|
|
|
|
if (r_type == R_IA64_IPLTMSB)
|
|
r_type = R_IA64_DIR64MSB;
|
|
else
|
|
r_type = R_IA64_DIR64LSB;
|
|
ia64_elf_install_value (hit_addr, value, r_type);
|
|
r = ia64_elf_install_value (hit_addr + 8, gp_val, r_type);
|
|
break;
|
|
|
|
case R_IA64_TPREL14:
|
|
case R_IA64_TPREL22:
|
|
case R_IA64_TPREL64I:
|
|
r = bfd_reloc_notsupported;
|
|
break;
|
|
|
|
case R_IA64_DTPREL14:
|
|
case R_IA64_DTPREL22:
|
|
case R_IA64_DTPREL64I:
|
|
case R_IA64_DTPREL32LSB:
|
|
case R_IA64_DTPREL32MSB:
|
|
case R_IA64_DTPREL64LSB:
|
|
case R_IA64_DTPREL64MSB:
|
|
r = bfd_reloc_notsupported;
|
|
break;
|
|
|
|
case R_IA64_LTOFF_TPREL22:
|
|
case R_IA64_LTOFF_DTPMOD22:
|
|
case R_IA64_LTOFF_DTPREL22:
|
|
r = bfd_reloc_notsupported;
|
|
break;
|
|
|
|
default:
|
|
r = bfd_reloc_notsupported;
|
|
break;
|
|
}
|
|
|
|
switch (r)
|
|
{
|
|
case bfd_reloc_ok:
|
|
break;
|
|
|
|
case bfd_reloc_undefined:
|
|
/* This can happen for global table relative relocs if
|
|
__gp is undefined. This is a panic situation so we
|
|
don't try to continue. */
|
|
(*info->callbacks->undefined_symbol)
|
|
(info, "__gp", input_bfd, input_section, rel->r_offset, 1);
|
|
return false;
|
|
|
|
case bfd_reloc_notsupported:
|
|
{
|
|
const char *name;
|
|
|
|
if (h)
|
|
name = h->root.root.string;
|
|
else
|
|
name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym,
|
|
sym_sec);
|
|
(*info->callbacks->warning) (info, _("unsupported reloc"),
|
|
name, input_bfd,
|
|
input_section, rel->r_offset);
|
|
ret_val = false;
|
|
}
|
|
break;
|
|
|
|
case bfd_reloc_dangerous:
|
|
case bfd_reloc_outofrange:
|
|
case bfd_reloc_overflow:
|
|
default:
|
|
{
|
|
const char *name;
|
|
|
|
if (h)
|
|
name = h->root.root.string;
|
|
else
|
|
name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym,
|
|
sym_sec);
|
|
|
|
switch (r_type)
|
|
{
|
|
case R_IA64_TPREL14:
|
|
case R_IA64_TPREL22:
|
|
case R_IA64_TPREL64I:
|
|
case R_IA64_DTPREL14:
|
|
case R_IA64_DTPREL22:
|
|
case R_IA64_DTPREL64I:
|
|
case R_IA64_DTPREL32LSB:
|
|
case R_IA64_DTPREL32MSB:
|
|
case R_IA64_DTPREL64LSB:
|
|
case R_IA64_DTPREL64MSB:
|
|
case R_IA64_LTOFF_TPREL22:
|
|
case R_IA64_LTOFF_DTPMOD22:
|
|
case R_IA64_LTOFF_DTPREL22:
|
|
_bfd_error_handler
|
|
/* xgettext:c-format */
|
|
(_("%pB: missing TLS section for relocation %s against `%s'"
|
|
" at %#" PRIx64 " in section `%pA'."),
|
|
input_bfd, howto->name, name,
|
|
(uint64_t) rel->r_offset, input_section);
|
|
break;
|
|
|
|
case R_IA64_PCREL21B:
|
|
case R_IA64_PCREL21BI:
|
|
case R_IA64_PCREL21M:
|
|
case R_IA64_PCREL21F:
|
|
if (is_elf_hash_table (info->hash))
|
|
{
|
|
/* Relaxtion is always performed for ELF output.
|
|
Overflow failures for those relocations mean
|
|
that the section is too big to relax. */
|
|
_bfd_error_handler
|
|
/* xgettext:c-format */
|
|
(_("%pB: Can't relax br (%s) to `%s' "
|
|
"at %#" PRIx64 " in section `%pA' "
|
|
"with size %#" PRIx64 " (> 0x1000000)."),
|
|
input_bfd, howto->name, name, (uint64_t) rel->r_offset,
|
|
input_section, (uint64_t) input_section->size);
|
|
break;
|
|
}
|
|
/* Fall through. */
|
|
default:
|
|
(*info->callbacks->reloc_overflow) (info,
|
|
&h->root,
|
|
name,
|
|
howto->name,
|
|
(bfd_vma) 0,
|
|
input_bfd,
|
|
input_section,
|
|
rel->r_offset);
|
|
break;
|
|
}
|
|
|
|
ret_val = false;
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
|
|
return ret_val;
|
|
}
|
|
|
|
static bool
|
|
elf64_ia64_finish_dynamic_symbol (bfd *output_bfd,
|
|
struct bfd_link_info *info,
|
|
struct elf_link_hash_entry *h,
|
|
Elf_Internal_Sym *sym)
|
|
{
|
|
struct elf64_ia64_link_hash_table *ia64_info;
|
|
struct elf64_ia64_dyn_sym_info *dyn_i;
|
|
|
|
ia64_info = elf64_ia64_hash_table (info);
|
|
if (ia64_info == NULL)
|
|
return false;
|
|
|
|
dyn_i = get_dyn_sym_info (ia64_info, h, NULL, NULL, false);
|
|
|
|
/* Fill in the PLT data, if required. */
|
|
if (dyn_i && dyn_i->want_plt)
|
|
{
|
|
bfd_byte *loc;
|
|
asection *plt_sec;
|
|
bfd_vma plt_addr, pltoff_addr, gp_val;
|
|
|
|
gp_val = _bfd_get_gp_value (output_bfd);
|
|
|
|
plt_sec = ia64_info->root.splt;
|
|
plt_addr = 0; /* Not used as overriden by FIXUPs. */
|
|
pltoff_addr = set_pltoff_entry (output_bfd, info, dyn_i, plt_addr, true);
|
|
|
|
/* Initialize the FULL PLT entry, if needed. */
|
|
if (dyn_i->want_plt2)
|
|
{
|
|
loc = plt_sec->contents + dyn_i->plt2_offset;
|
|
|
|
memcpy (loc, plt_full_entry, PLT_FULL_ENTRY_SIZE);
|
|
ia64_elf_install_value (loc, pltoff_addr - gp_val, R_IA64_IMM22);
|
|
|
|
/* Mark the symbol as undefined, rather than as defined in the
|
|
plt section. Leave the value alone. */
|
|
/* ??? We didn't redefine it in adjust_dynamic_symbol in the
|
|
first place. But perhaps elflink.c did some for us. */
|
|
if (!h->def_regular)
|
|
sym->st_shndx = SHN_UNDEF;
|
|
}
|
|
|
|
/* VMS: FIXFD. */
|
|
elf64_ia64_install_fixup
|
|
(output_bfd, ia64_info, h, R_IA64_VMS_FIXFD, ia64_info->pltoff_sec,
|
|
pltoff_addr - (ia64_info->pltoff_sec->output_section->vma
|
|
+ ia64_info->pltoff_sec->output_offset), 0);
|
|
}
|
|
|
|
/* Mark some specially defined symbols as absolute. */
|
|
if (h == ia64_info->root.hdynamic
|
|
|| h == ia64_info->root.hgot
|
|
|| h == ia64_info->root.hplt)
|
|
sym->st_shndx = SHN_ABS;
|
|
|
|
return true;
|
|
}
|
|
|
|
static bool
|
|
elf64_ia64_finish_dynamic_sections (bfd *abfd,
|
|
struct bfd_link_info *info)
|
|
{
|
|
struct elf64_ia64_link_hash_table *ia64_info;
|
|
bfd *dynobj;
|
|
|
|
ia64_info = elf64_ia64_hash_table (info);
|
|
if (ia64_info == NULL)
|
|
return false;
|
|
|
|
dynobj = ia64_info->root.dynobj;
|
|
|
|
if (elf_hash_table (info)->dynamic_sections_created)
|
|
{
|
|
Elf64_External_Dyn *dyncon, *dynconend;
|
|
asection *sdyn;
|
|
asection *unwind_sec;
|
|
bfd_vma gp_val;
|
|
unsigned int gp_seg;
|
|
bfd_vma gp_off;
|
|
Elf_Internal_Phdr *phdr;
|
|
Elf_Internal_Phdr *base_phdr;
|
|
unsigned int unwind_seg = 0;
|
|
unsigned int code_seg = 0;
|
|
|
|
sdyn = bfd_get_linker_section (dynobj, ".dynamic");
|
|
BFD_ASSERT (sdyn != NULL);
|
|
dyncon = (Elf64_External_Dyn *) sdyn->contents;
|
|
dynconend = (Elf64_External_Dyn *) (sdyn->contents + sdyn->size);
|
|
|
|
gp_val = _bfd_get_gp_value (abfd);
|
|
phdr = _bfd_elf_find_segment_containing_section
|
|
(info->output_bfd, ia64_info->pltoff_sec->output_section);
|
|
BFD_ASSERT (phdr != NULL);
|
|
base_phdr = elf_tdata (info->output_bfd)->phdr;
|
|
gp_seg = phdr - base_phdr;
|
|
gp_off = gp_val - phdr->p_vaddr;
|
|
|
|
unwind_sec = bfd_get_section_by_name (abfd, ELF_STRING_ia64_unwind);
|
|
if (unwind_sec != NULL)
|
|
{
|
|
asection *code_sec;
|
|
|
|
phdr = _bfd_elf_find_segment_containing_section (abfd, unwind_sec);
|
|
BFD_ASSERT (phdr != NULL);
|
|
unwind_seg = phdr - base_phdr;
|
|
|
|
code_sec = bfd_get_section_by_name (abfd, "$CODE$");
|
|
phdr = _bfd_elf_find_segment_containing_section (abfd, code_sec);
|
|
BFD_ASSERT (phdr != NULL);
|
|
code_seg = phdr - base_phdr;
|
|
}
|
|
|
|
for (; dyncon < dynconend; dyncon++)
|
|
{
|
|
Elf_Internal_Dyn dyn;
|
|
|
|
bfd_elf64_swap_dyn_in (dynobj, dyncon, &dyn);
|
|
|
|
switch (dyn.d_tag)
|
|
{
|
|
case DT_IA_64_VMS_FIXUP_RELA_OFF:
|
|
dyn.d_un.d_val +=
|
|
(ia64_info->fixups_sec->output_section->vma
|
|
+ ia64_info->fixups_sec->output_offset)
|
|
- (sdyn->output_section->vma + sdyn->output_offset);
|
|
break;
|
|
|
|
case DT_IA_64_VMS_PLTGOT_OFFSET:
|
|
dyn.d_un.d_val = gp_off;
|
|
break;
|
|
|
|
case DT_IA_64_VMS_PLTGOT_SEG:
|
|
dyn.d_un.d_val = gp_seg;
|
|
break;
|
|
|
|
case DT_IA_64_VMS_UNWINDSZ:
|
|
if (unwind_sec == NULL)
|
|
{
|
|
dyn.d_tag = DT_NULL;
|
|
dyn.d_un.d_val = 0xdead;
|
|
}
|
|
else
|
|
dyn.d_un.d_val = unwind_sec->size;
|
|
break;
|
|
|
|
case DT_IA_64_VMS_UNWIND_CODSEG:
|
|
dyn.d_un.d_val = code_seg;
|
|
break;
|
|
|
|
case DT_IA_64_VMS_UNWIND_INFOSEG:
|
|
case DT_IA_64_VMS_UNWIND_SEG:
|
|
dyn.d_un.d_val = unwind_seg;
|
|
break;
|
|
|
|
case DT_IA_64_VMS_UNWIND_OFFSET:
|
|
break;
|
|
|
|
default:
|
|
/* No need to rewrite the entry. */
|
|
continue;
|
|
}
|
|
|
|
bfd_elf64_swap_dyn_out (abfd, &dyn, dyncon);
|
|
}
|
|
}
|
|
|
|
/* Handle transfer addresses. */
|
|
{
|
|
asection *tfr_sec = ia64_info->transfer_sec;
|
|
struct elf64_vms_transfer *tfr;
|
|
struct elf_link_hash_entry *tfr3;
|
|
|
|
tfr = (struct elf64_vms_transfer *)tfr_sec->contents;
|
|
bfd_putl32 (6 * 8, tfr->size);
|
|
bfd_putl64 (tfr_sec->output_section->vma
|
|
+ tfr_sec->output_offset
|
|
+ 6 * 8, tfr->tfradr3);
|
|
|
|
tfr3 = elf_link_hash_lookup (elf_hash_table (info), "ELF$TFRADR", false,
|
|
false, false);
|
|
|
|
if (tfr3
|
|
&& (tfr3->root.type == bfd_link_hash_defined
|
|
|| tfr3->root.type == bfd_link_hash_defweak))
|
|
{
|
|
asection *tfr3_sec = tfr3->root.u.def.section;
|
|
bfd_vma tfr3_val;
|
|
|
|
tfr3_val = (tfr3->root.u.def.value
|
|
+ tfr3_sec->output_section->vma
|
|
+ tfr3_sec->output_offset);
|
|
|
|
bfd_putl64 (tfr3_val, tfr->tfr3_func);
|
|
bfd_putl64 (_bfd_get_gp_value (info->output_bfd), tfr->tfr3_gp);
|
|
}
|
|
|
|
/* FIXME: set linker flags,
|
|
handle lib$initialize. */
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
/* ELF file flag handling: */
|
|
|
|
/* Function to keep IA-64 specific file flags. */
|
|
static bool
|
|
elf64_ia64_set_private_flags (bfd *abfd, flagword flags)
|
|
{
|
|
BFD_ASSERT (!elf_flags_init (abfd)
|
|
|| elf_elfheader (abfd)->e_flags == flags);
|
|
|
|
elf_elfheader (abfd)->e_flags = flags;
|
|
elf_flags_init (abfd) = true;
|
|
return true;
|
|
}
|
|
|
|
/* Merge backend specific data from an object file to the output
|
|
object file when linking. */
|
|
static bool
|
|
elf64_ia64_merge_private_bfd_data (bfd *ibfd, struct bfd_link_info *info)
|
|
{
|
|
bfd *obfd = info->output_bfd;
|
|
flagword out_flags;
|
|
flagword in_flags;
|
|
bool ok = true;
|
|
|
|
/* FIXME: What should be checked when linking shared libraries? */
|
|
if ((ibfd->flags & DYNAMIC) != 0)
|
|
return 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
|
|
(_("%pB: linking trap-on-NULL-dereference with non-trapping files"),
|
|
ibfd);
|
|
|
|
bfd_set_error (bfd_error_bad_value);
|
|
ok = false;
|
|
}
|
|
if ((in_flags & EF_IA_64_BE) != (out_flags & EF_IA_64_BE))
|
|
{
|
|
_bfd_error_handler
|
|
(_("%pB: linking big-endian files with little-endian files"),
|
|
ibfd);
|
|
|
|
bfd_set_error (bfd_error_bad_value);
|
|
ok = false;
|
|
}
|
|
if ((in_flags & EF_IA_64_ABI64) != (out_flags & EF_IA_64_ABI64))
|
|
{
|
|
_bfd_error_handler
|
|
(_("%pB: linking 64-bit files with 32-bit files"),
|
|
ibfd);
|
|
|
|
bfd_set_error (bfd_error_bad_value);
|
|
ok = false;
|
|
}
|
|
if ((in_flags & EF_IA_64_CONS_GP) != (out_flags & EF_IA_64_CONS_GP))
|
|
{
|
|
_bfd_error_handler
|
|
(_("%pB: linking constant-gp files with non-constant-gp files"),
|
|
ibfd);
|
|
|
|
bfd_set_error (bfd_error_bad_value);
|
|
ok = false;
|
|
}
|
|
if ((in_flags & EF_IA_64_NOFUNCDESC_CONS_GP)
|
|
!= (out_flags & EF_IA_64_NOFUNCDESC_CONS_GP))
|
|
{
|
|
_bfd_error_handler
|
|
(_("%pB: linking auto-pic files with non-auto-pic files"),
|
|
ibfd);
|
|
|
|
bfd_set_error (bfd_error_bad_value);
|
|
ok = false;
|
|
}
|
|
|
|
return ok;
|
|
}
|
|
|
|
static bool
|
|
elf64_ia64_print_private_bfd_data (bfd *abfd, void * ptr)
|
|
{
|
|
FILE *file = (FILE *) ptr;
|
|
flagword flags = elf_elfheader (abfd)->e_flags;
|
|
|
|
BFD_ASSERT (abfd != NULL && ptr != NULL);
|
|
|
|
fprintf (file, "private flags = %s%s%s%s%s%s%s%s\n",
|
|
(flags & EF_IA_64_TRAPNIL) ? "TRAPNIL, " : "",
|
|
(flags & EF_IA_64_EXT) ? "EXT, " : "",
|
|
(flags & EF_IA_64_BE) ? "BE, " : "LE, ",
|
|
(flags & EF_IA_64_REDUCEDFP) ? "REDUCEDFP, " : "",
|
|
(flags & EF_IA_64_CONS_GP) ? "CONS_GP, " : "",
|
|
(flags & EF_IA_64_NOFUNCDESC_CONS_GP) ? "NOFUNCDESC_CONS_GP, " : "",
|
|
(flags & EF_IA_64_ABSOLUTE) ? "ABSOLUTE, " : "",
|
|
(flags & EF_IA_64_ABI64) ? "ABI64" : "ABI32");
|
|
|
|
_bfd_elf_print_private_bfd_data (abfd, ptr);
|
|
return true;
|
|
}
|
|
|
|
static enum elf_reloc_type_class
|
|
elf64_ia64_reloc_type_class (const struct bfd_link_info *info ATTRIBUTE_UNUSED,
|
|
const asection *rel_sec ATTRIBUTE_UNUSED,
|
|
const Elf_Internal_Rela *rela)
|
|
{
|
|
switch ((int) ELF64_R_TYPE (rela->r_info))
|
|
{
|
|
case R_IA64_REL32MSB:
|
|
case R_IA64_REL32LSB:
|
|
case R_IA64_REL64MSB:
|
|
case R_IA64_REL64LSB:
|
|
return reloc_class_relative;
|
|
case R_IA64_IPLTMSB:
|
|
case R_IA64_IPLTLSB:
|
|
return reloc_class_plt;
|
|
case R_IA64_COPY:
|
|
return reloc_class_copy;
|
|
default:
|
|
return reloc_class_normal;
|
|
}
|
|
}
|
|
|
|
static const struct bfd_elf_special_section elf64_ia64_special_sections[] =
|
|
{
|
|
{ STRING_COMMA_LEN (".sbss"), -1, SHT_NOBITS, SHF_ALLOC + SHF_WRITE + SHF_IA_64_SHORT },
|
|
{ STRING_COMMA_LEN (".sdata"), -1, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE + SHF_IA_64_SHORT },
|
|
{ NULL, 0, 0, 0, 0 }
|
|
};
|
|
|
|
static bool
|
|
elf64_ia64_object_p (bfd *abfd)
|
|
{
|
|
asection *sec;
|
|
asection *group, *unwi, *unw;
|
|
flagword flags;
|
|
const char *name;
|
|
char *unwi_name, *unw_name;
|
|
size_t amt;
|
|
|
|
if (abfd->flags & DYNAMIC)
|
|
return true;
|
|
|
|
/* Flags for fake group section. */
|
|
flags = (SEC_LINKER_CREATED | SEC_GROUP | SEC_LINK_ONCE
|
|
| SEC_EXCLUDE);
|
|
|
|
/* We add a fake section group for each .gnu.linkonce.t.* section,
|
|
which isn't in a section group, and its unwind sections. */
|
|
for (sec = abfd->sections; sec != NULL; sec = sec->next)
|
|
{
|
|
if (elf_sec_group (sec) == NULL
|
|
&& ((sec->flags & (SEC_LINK_ONCE | SEC_CODE | SEC_GROUP))
|
|
== (SEC_LINK_ONCE | SEC_CODE))
|
|
&& startswith (sec->name, ".gnu.linkonce.t."))
|
|
{
|
|
name = sec->name + 16;
|
|
|
|
amt = strlen (name) + sizeof (".gnu.linkonce.ia64unwi.");
|
|
unwi_name = bfd_alloc (abfd, amt);
|
|
if (!unwi_name)
|
|
return false;
|
|
|
|
strcpy (stpcpy (unwi_name, ".gnu.linkonce.ia64unwi."), name);
|
|
unwi = bfd_get_section_by_name (abfd, unwi_name);
|
|
|
|
amt = strlen (name) + sizeof (".gnu.linkonce.ia64unw.");
|
|
unw_name = bfd_alloc (abfd, amt);
|
|
if (!unw_name)
|
|
return false;
|
|
|
|
strcpy (stpcpy (unw_name, ".gnu.linkonce.ia64unw."), name);
|
|
unw = bfd_get_section_by_name (abfd, unw_name);
|
|
|
|
/* We need to create a fake group section for it and its
|
|
unwind sections. */
|
|
group = bfd_make_section_anyway_with_flags (abfd, name,
|
|
flags);
|
|
if (group == NULL)
|
|
return false;
|
|
|
|
/* Move the fake group section to the beginning. */
|
|
bfd_section_list_remove (abfd, group);
|
|
bfd_section_list_prepend (abfd, group);
|
|
|
|
elf_next_in_group (group) = sec;
|
|
|
|
elf_group_name (sec) = name;
|
|
elf_next_in_group (sec) = sec;
|
|
elf_sec_group (sec) = group;
|
|
|
|
if (unwi)
|
|
{
|
|
elf_group_name (unwi) = name;
|
|
elf_next_in_group (unwi) = sec;
|
|
elf_next_in_group (sec) = unwi;
|
|
elf_sec_group (unwi) = group;
|
|
}
|
|
|
|
if (unw)
|
|
{
|
|
elf_group_name (unw) = name;
|
|
if (unwi)
|
|
{
|
|
elf_next_in_group (unw) = elf_next_in_group (unwi);
|
|
elf_next_in_group (unwi) = unw;
|
|
}
|
|
else
|
|
{
|
|
elf_next_in_group (unw) = sec;
|
|
elf_next_in_group (sec) = unw;
|
|
}
|
|
elf_sec_group (unw) = group;
|
|
}
|
|
|
|
/* Fake SHT_GROUP section header. */
|
|
elf_section_data (group)->this_hdr.bfd_section = group;
|
|
elf_section_data (group)->this_hdr.sh_type = SHT_GROUP;
|
|
}
|
|
}
|
|
return true;
|
|
}
|
|
|
|
/* Handle an IA-64 specific section when reading an object file. This
|
|
is called when bfd_section_from_shdr finds a section with an unknown
|
|
type. */
|
|
|
|
static bool
|
|
elf64_vms_section_from_shdr (bfd *abfd,
|
|
Elf_Internal_Shdr *hdr,
|
|
const char *name,
|
|
int shindex)
|
|
{
|
|
flagword secflags = 0;
|
|
|
|
switch (hdr->sh_type)
|
|
{
|
|
case SHT_IA_64_VMS_TRACE:
|
|
case SHT_IA_64_VMS_DEBUG:
|
|
case SHT_IA_64_VMS_DEBUG_STR:
|
|
secflags = SEC_DEBUGGING;
|
|
break;
|
|
|
|
case SHT_IA_64_UNWIND:
|
|
case SHT_IA_64_HP_OPT_ANOT:
|
|
break;
|
|
|
|
case SHT_IA_64_EXT:
|
|
if (strcmp (name, ELF_STRING_ia64_archext) != 0)
|
|
return false;
|
|
break;
|
|
|
|
default:
|
|
return false;
|
|
}
|
|
|
|
if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex))
|
|
return false;
|
|
|
|
if (secflags != 0)
|
|
{
|
|
asection *newsect = hdr->bfd_section;
|
|
|
|
if (!bfd_set_section_flags (newsect,
|
|
bfd_section_flags (newsect) | secflags))
|
|
return false;
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
static bool
|
|
elf64_vms_object_p (bfd *abfd)
|
|
{
|
|
Elf_Internal_Ehdr *i_ehdrp = elf_elfheader (abfd);
|
|
Elf_Internal_Phdr *i_phdr = elf_tdata (abfd)->phdr;
|
|
unsigned int i;
|
|
unsigned int num_text = 0;
|
|
unsigned int num_data = 0;
|
|
unsigned int num_rodata = 0;
|
|
char name[16];
|
|
|
|
if (!elf64_ia64_object_p (abfd))
|
|
return false;
|
|
|
|
/* Many VMS compilers do not generate sections for the corresponding
|
|
segment. This is boring as binutils tools won't be able to disassemble
|
|
the code. So we simply create all the missing sections. */
|
|
for (i = 0; i < i_ehdrp->e_phnum; i++, i_phdr++)
|
|
{
|
|
/* Is there a section for this segment? */
|
|
bfd_vma base_vma = i_phdr->p_vaddr;
|
|
bfd_vma limit_vma = base_vma + i_phdr->p_filesz;
|
|
|
|
if (i_phdr->p_type != PT_LOAD)
|
|
continue;
|
|
|
|
/* We need to cover from base_vms to limit_vma. */
|
|
again:
|
|
while (base_vma < limit_vma)
|
|
{
|
|
bfd_vma next_vma = limit_vma;
|
|
asection *nsec;
|
|
asection *sec;
|
|
flagword flags;
|
|
char *nname = NULL;
|
|
|
|
/* Find a section covering [base_vma;limit_vma) */
|
|
for (sec = abfd->sections; sec != NULL; sec = sec->next)
|
|
{
|
|
/* Skip uninteresting sections (either not in memory or
|
|
below base_vma. */
|
|
if ((sec->flags & (SEC_ALLOC | SEC_LOAD)) == 0
|
|
|| sec->vma + sec->size <= base_vma)
|
|
continue;
|
|
if (sec->vma <= base_vma)
|
|
{
|
|
/* This section covers (maybe partially) the beginning
|
|
of the range. */
|
|
base_vma = sec->vma + sec->size;
|
|
goto again;
|
|
}
|
|
if (sec->vma < next_vma)
|
|
{
|
|
/* This section partially covers the end of the range.
|
|
Used to compute the size of the hole. */
|
|
next_vma = sec->vma;
|
|
}
|
|
}
|
|
|
|
/* No section covering [base_vma; next_vma). Create a fake one. */
|
|
flags = SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS;
|
|
if (i_phdr->p_flags & PF_X)
|
|
{
|
|
flags |= SEC_CODE;
|
|
if (num_text++ == 0)
|
|
nname = ".text";
|
|
else
|
|
sprintf (name, ".text$%u", num_text);
|
|
}
|
|
else if ((i_phdr->p_flags & (PF_R | PF_W)) == PF_R)
|
|
{
|
|
flags |= SEC_READONLY;
|
|
sprintf (name, ".rodata$%u", num_rodata++);
|
|
}
|
|
else
|
|
{
|
|
flags |= SEC_DATA;
|
|
sprintf (name, ".data$%u", num_data++);
|
|
}
|
|
|
|
/* Allocate name. */
|
|
if (nname == NULL)
|
|
{
|
|
size_t name_len = strlen (name) + 1;
|
|
nname = bfd_alloc (abfd, name_len);
|
|
if (nname == NULL)
|
|
return false;
|
|
memcpy (nname, name, name_len);
|
|
}
|
|
|
|
/* Create and fill new section. */
|
|
nsec = bfd_make_section_anyway_with_flags (abfd, nname, flags);
|
|
if (nsec == NULL)
|
|
return false;
|
|
nsec->vma = base_vma;
|
|
nsec->size = next_vma - base_vma;
|
|
nsec->filepos = i_phdr->p_offset + (base_vma - i_phdr->p_vaddr);
|
|
|
|
base_vma = next_vma;
|
|
}
|
|
}
|
|
return true;
|
|
}
|
|
|
|
static bool
|
|
elf64_vms_init_file_header (bfd *abfd, struct bfd_link_info *info)
|
|
{
|
|
Elf_Internal_Ehdr *i_ehdrp;
|
|
|
|
if (!_bfd_elf_init_file_header (abfd, info))
|
|
return false;
|
|
|
|
i_ehdrp = elf_elfheader (abfd);
|
|
i_ehdrp->e_ident[EI_OSABI] = ELFOSABI_OPENVMS;
|
|
i_ehdrp->e_ident[EI_ABIVERSION] = 2;
|
|
return true;
|
|
}
|
|
|
|
static bool
|
|
elf64_vms_section_processing (bfd *abfd ATTRIBUTE_UNUSED,
|
|
Elf_Internal_Shdr *hdr)
|
|
{
|
|
if (hdr->bfd_section != NULL)
|
|
{
|
|
const char *name = bfd_section_name (hdr->bfd_section);
|
|
|
|
if (strcmp (name, ".text") == 0)
|
|
hdr->sh_flags |= SHF_IA_64_VMS_SHARED;
|
|
else if ((strcmp (name, ".debug") == 0)
|
|
|| (strcmp (name, ".debug_abbrev") == 0)
|
|
|| (strcmp (name, ".debug_aranges") == 0)
|
|
|| (strcmp (name, ".debug_frame") == 0)
|
|
|| (strcmp (name, ".debug_info") == 0)
|
|
|| (strcmp (name, ".debug_loc") == 0)
|
|
|| (strcmp (name, ".debug_macinfo") == 0)
|
|
|| (strcmp (name, ".debug_pubnames") == 0)
|
|
|| (strcmp (name, ".debug_pubtypes") == 0))
|
|
hdr->sh_type = SHT_IA_64_VMS_DEBUG;
|
|
else if ((strcmp (name, ".debug_line") == 0)
|
|
|| (strcmp (name, ".debug_ranges") == 0)
|
|
|| (strcmp (name, ".trace_info") == 0)
|
|
|| (strcmp (name, ".trace_abbrev") == 0)
|
|
|| (strcmp (name, ".trace_aranges") == 0))
|
|
hdr->sh_type = SHT_IA_64_VMS_TRACE;
|
|
else if (strcmp (name, ".debug_str") == 0)
|
|
hdr->sh_type = SHT_IA_64_VMS_DEBUG_STR;
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
/* The final processing done just before writing out a VMS IA-64 ELF
|
|
object file. */
|
|
|
|
static bool
|
|
elf64_vms_final_write_processing (bfd *abfd)
|
|
{
|
|
Elf_Internal_Shdr *hdr;
|
|
asection *s;
|
|
int unwind_info_sect_idx = 0;
|
|
|
|
for (s = abfd->sections; s; s = s->next)
|
|
{
|
|
hdr = &elf_section_data (s)->this_hdr;
|
|
|
|
if (strcmp (bfd_section_name (hdr->bfd_section),
|
|
".IA_64.unwind_info") == 0)
|
|
unwind_info_sect_idx = elf_section_data (s)->this_idx;
|
|
|
|
switch (hdr->sh_type)
|
|
{
|
|
case SHT_IA_64_UNWIND:
|
|
/* VMS requires sh_info to point to the unwind info section. */
|
|
hdr->sh_info = unwind_info_sect_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;
|
|
}
|
|
return _bfd_elf_final_write_processing (abfd);
|
|
}
|
|
|
|
static bool
|
|
elf64_vms_write_shdrs_and_ehdr (bfd *abfd)
|
|
{
|
|
unsigned char needed_count[8];
|
|
|
|
if (!bfd_elf64_write_shdrs_and_ehdr (abfd))
|
|
return false;
|
|
|
|
bfd_putl64 (elf_ia64_vms_tdata (abfd)->needed_count, needed_count);
|
|
|
|
if (bfd_seek (abfd, sizeof (Elf64_External_Ehdr), SEEK_SET) != 0
|
|
|| bfd_bwrite (needed_count, 8, abfd) != 8)
|
|
return false;
|
|
|
|
return true;
|
|
}
|
|
|
|
static bool
|
|
elf64_vms_close_and_cleanup (bfd *abfd)
|
|
{
|
|
if (bfd_get_format (abfd) == bfd_object)
|
|
{
|
|
long isize;
|
|
|
|
/* Pad to 8 byte boundary for IPF/VMS. */
|
|
isize = bfd_get_size (abfd);
|
|
if ((isize & 7) != 0)
|
|
{
|
|
int ishort = 8 - (isize & 7);
|
|
uint64_t pad = 0;
|
|
|
|
bfd_seek (abfd, isize, SEEK_SET);
|
|
bfd_bwrite (&pad, ishort, abfd);
|
|
}
|
|
}
|
|
|
|
return _bfd_elf_close_and_cleanup (abfd);
|
|
}
|
|
|
|
/* Add symbols from an ELF object file to the linker hash table. */
|
|
|
|
static bool
|
|
elf64_vms_link_add_object_symbols (bfd *abfd, struct bfd_link_info *info)
|
|
{
|
|
Elf_Internal_Shdr *hdr;
|
|
bfd_size_type symcount;
|
|
bfd_size_type extsymcount;
|
|
bfd_size_type extsymoff;
|
|
struct elf_link_hash_entry **sym_hash;
|
|
bool dynamic;
|
|
Elf_Internal_Sym *isymbuf = NULL;
|
|
Elf_Internal_Sym *isym;
|
|
Elf_Internal_Sym *isymend;
|
|
const struct elf_backend_data *bed;
|
|
struct elf_link_hash_table *htab;
|
|
bfd_size_type amt;
|
|
|
|
htab = elf_hash_table (info);
|
|
bed = get_elf_backend_data (abfd);
|
|
|
|
if ((abfd->flags & DYNAMIC) == 0)
|
|
dynamic = false;
|
|
else
|
|
{
|
|
dynamic = true;
|
|
|
|
/* You can't use -r against a dynamic object. Also, there's no
|
|
hope of using a dynamic object which does not exactly match
|
|
the format of the output file. */
|
|
if (bfd_link_relocatable (info)
|
|
|| !is_elf_hash_table (&htab->root)
|
|
|| info->output_bfd->xvec != abfd->xvec)
|
|
{
|
|
if (bfd_link_relocatable (info))
|
|
bfd_set_error (bfd_error_invalid_operation);
|
|
else
|
|
bfd_set_error (bfd_error_wrong_format);
|
|
goto error_return;
|
|
}
|
|
}
|
|
|
|
if (! dynamic)
|
|
{
|
|
/* If we are creating a shared library, create all the dynamic
|
|
sections immediately. We need to attach them to something,
|
|
so we attach them to this BFD, provided it is the right
|
|
format. FIXME: If there are no input BFD's of the same
|
|
format as the output, we can't make a shared library. */
|
|
if (bfd_link_pic (info)
|
|
&& is_elf_hash_table (&htab->root)
|
|
&& info->output_bfd->xvec == abfd->xvec
|
|
&& !htab->dynamic_sections_created)
|
|
{
|
|
if (! elf64_ia64_create_dynamic_sections (abfd, info))
|
|
goto error_return;
|
|
}
|
|
}
|
|
else if (!is_elf_hash_table (&htab->root))
|
|
goto error_return;
|
|
else
|
|
{
|
|
asection *s;
|
|
bfd_byte *dynbuf;
|
|
bfd_byte *extdyn;
|
|
|
|
/* ld --just-symbols and dynamic objects don't mix very well.
|
|
ld shouldn't allow it. */
|
|
if ((s = abfd->sections) != NULL
|
|
&& s->sec_info_type == SEC_INFO_TYPE_JUST_SYMS)
|
|
abort ();
|
|
|
|
/* Be sure there are dynamic sections. */
|
|
if (! elf64_ia64_create_dynamic_sections (htab->dynobj, info))
|
|
goto error_return;
|
|
|
|
s = bfd_get_section_by_name (abfd, ".dynamic");
|
|
if (s == NULL)
|
|
{
|
|
/* VMS libraries do not have dynamic sections. Create one from
|
|
the segment. */
|
|
Elf_Internal_Phdr *phdr;
|
|
unsigned int i, phnum;
|
|
|
|
phdr = elf_tdata (abfd)->phdr;
|
|
if (phdr == NULL)
|
|
goto error_return;
|
|
phnum = elf_elfheader (abfd)->e_phnum;
|
|
for (i = 0; i < phnum; phdr++)
|
|
if (phdr->p_type == PT_DYNAMIC)
|
|
{
|
|
s = bfd_make_section (abfd, ".dynamic");
|
|
if (s == NULL)
|
|
goto error_return;
|
|
s->vma = phdr->p_vaddr;
|
|
s->lma = phdr->p_paddr;
|
|
s->size = phdr->p_filesz;
|
|
s->filepos = phdr->p_offset;
|
|
s->flags |= SEC_HAS_CONTENTS;
|
|
s->alignment_power = bfd_log2 (phdr->p_align);
|
|
break;
|
|
}
|
|
if (s == NULL)
|
|
goto error_return;
|
|
}
|
|
|
|
/* Extract IDENT. */
|
|
if (!bfd_malloc_and_get_section (abfd, s, &dynbuf))
|
|
{
|
|
error_free_dyn:
|
|
free (dynbuf);
|
|
goto error_return;
|
|
}
|
|
|
|
for (extdyn = dynbuf;
|
|
extdyn < dynbuf + s->size;
|
|
extdyn += bed->s->sizeof_dyn)
|
|
{
|
|
Elf_Internal_Dyn dyn;
|
|
|
|
bed->s->swap_dyn_in (abfd, extdyn, &dyn);
|
|
if (dyn.d_tag == DT_IA_64_VMS_IDENT)
|
|
{
|
|
uint64_t tagv = dyn.d_un.d_val;
|
|
elf_ia64_vms_ident (abfd) = tagv;
|
|
break;
|
|
}
|
|
}
|
|
if (extdyn >= dynbuf + s->size)
|
|
{
|
|
/* Ident not found. */
|
|
goto error_free_dyn;
|
|
}
|
|
free (dynbuf);
|
|
|
|
/* We do not want to include any of the sections in a dynamic
|
|
object in the output file. We hack by simply clobbering the
|
|
list of sections in the BFD. This could be handled more
|
|
cleanly by, say, a new section flag; the existing
|
|
SEC_NEVER_LOAD flag is not the one we want, because that one
|
|
still implies that the section takes up space in the output
|
|
file. */
|
|
bfd_section_list_clear (abfd);
|
|
|
|
/* FIXME: should we detect if this library is already included ?
|
|
This should be harmless and shouldn't happen in practice. */
|
|
}
|
|
|
|
hdr = &elf_tdata (abfd)->symtab_hdr;
|
|
symcount = hdr->sh_size / bed->s->sizeof_sym;
|
|
|
|
/* The sh_info field of the symtab header tells us where the
|
|
external symbols start. We don't care about the local symbols at
|
|
this point. */
|
|
extsymcount = symcount - hdr->sh_info;
|
|
extsymoff = hdr->sh_info;
|
|
|
|
sym_hash = NULL;
|
|
if (extsymcount != 0)
|
|
{
|
|
isymbuf = bfd_elf_get_elf_syms (abfd, hdr, extsymcount, extsymoff,
|
|
NULL, NULL, NULL);
|
|
if (isymbuf == NULL)
|
|
goto error_return;
|
|
|
|
/* We store a pointer to the hash table entry for each external
|
|
symbol. */
|
|
amt = extsymcount * sizeof (struct elf_link_hash_entry *);
|
|
sym_hash = (struct elf_link_hash_entry **) bfd_alloc (abfd, amt);
|
|
if (sym_hash == NULL)
|
|
goto error_free_sym;
|
|
elf_sym_hashes (abfd) = sym_hash;
|
|
}
|
|
|
|
for (isym = isymbuf, isymend = isymbuf + extsymcount;
|
|
isym < isymend;
|
|
isym++, sym_hash++)
|
|
{
|
|
int bind;
|
|
bfd_vma value;
|
|
asection *sec, *new_sec;
|
|
flagword flags;
|
|
const char *name;
|
|
struct elf_link_hash_entry *h;
|
|
bool definition;
|
|
bool size_change_ok;
|
|
bool type_change_ok;
|
|
bool common;
|
|
unsigned int old_alignment;
|
|
bfd *old_bfd;
|
|
|
|
flags = BSF_NO_FLAGS;
|
|
sec = NULL;
|
|
value = isym->st_value;
|
|
*sym_hash = NULL;
|
|
common = bed->common_definition (isym);
|
|
|
|
bind = ELF_ST_BIND (isym->st_info);
|
|
switch (bind)
|
|
{
|
|
case STB_LOCAL:
|
|
/* This should be impossible, since ELF requires that all
|
|
global symbols follow all local symbols, and that sh_info
|
|
point to the first global symbol. Unfortunately, Irix 5
|
|
screws this up. */
|
|
continue;
|
|
|
|
case STB_GLOBAL:
|
|
if (isym->st_shndx != SHN_UNDEF && !common)
|
|
flags = BSF_GLOBAL;
|
|
break;
|
|
|
|
case STB_WEAK:
|
|
flags = BSF_WEAK;
|
|
break;
|
|
|
|
case STB_GNU_UNIQUE:
|
|
flags = BSF_GNU_UNIQUE;
|
|
break;
|
|
|
|
default:
|
|
/* Leave it up to the processor backend. */
|
|
break;
|
|
}
|
|
|
|
if (isym->st_shndx == SHN_UNDEF)
|
|
sec = bfd_und_section_ptr;
|
|
else if (isym->st_shndx == SHN_ABS)
|
|
sec = bfd_abs_section_ptr;
|
|
else if (isym->st_shndx == SHN_COMMON)
|
|
{
|
|
sec = bfd_com_section_ptr;
|
|
/* What ELF calls the size we call the value. What ELF
|
|
calls the value we call the alignment. */
|
|
value = isym->st_size;
|
|
}
|
|
else
|
|
{
|
|
sec = bfd_section_from_elf_index (abfd, isym->st_shndx);
|
|
if (sec == NULL)
|
|
sec = bfd_abs_section_ptr;
|
|
else if (sec->kept_section)
|
|
{
|
|
/* Symbols from discarded section are undefined. We keep
|
|
its visibility. */
|
|
sec = bfd_und_section_ptr;
|
|
isym->st_shndx = SHN_UNDEF;
|
|
}
|
|
else if ((abfd->flags & (EXEC_P | DYNAMIC)) != 0)
|
|
value -= sec->vma;
|
|
}
|
|
|
|
name = bfd_elf_string_from_elf_section (abfd, hdr->sh_link,
|
|
isym->st_name);
|
|
if (name == NULL)
|
|
goto error_free_vers;
|
|
|
|
if (bed->elf_add_symbol_hook)
|
|
{
|
|
if (! (*bed->elf_add_symbol_hook) (abfd, info, isym, &name, &flags,
|
|
&sec, &value))
|
|
goto error_free_vers;
|
|
|
|
/* The hook function sets the name to NULL if this symbol
|
|
should be skipped for some reason. */
|
|
if (name == NULL)
|
|
continue;
|
|
}
|
|
|
|
/* Sanity check that all possibilities were handled. */
|
|
if (sec == NULL)
|
|
{
|
|
bfd_set_error (bfd_error_bad_value);
|
|
goto error_free_vers;
|
|
}
|
|
|
|
if (bfd_is_und_section (sec)
|
|
|| bfd_is_com_section (sec))
|
|
definition = false;
|
|
else
|
|
definition = true;
|
|
|
|
size_change_ok = false;
|
|
type_change_ok = bed->type_change_ok;
|
|
old_alignment = 0;
|
|
old_bfd = NULL;
|
|
new_sec = sec;
|
|
|
|
if (! bfd_is_und_section (sec))
|
|
h = elf_link_hash_lookup (htab, name, true, false, false);
|
|
else
|
|
h = ((struct elf_link_hash_entry *) bfd_wrapped_link_hash_lookup
|
|
(abfd, info, name, true, false, false));
|
|
if (h == NULL)
|
|
goto error_free_sym;
|
|
|
|
*sym_hash = h;
|
|
|
|
if (is_elf_hash_table (&htab->root))
|
|
{
|
|
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;
|
|
|
|
/* Remember the old alignment if this is a common symbol, so
|
|
that we don't reduce the alignment later on. We can't
|
|
check later, because _bfd_generic_link_add_one_symbol
|
|
will set a default for the alignment which we want to
|
|
override. We also remember the old bfd where the existing
|
|
definition comes from. */
|
|
switch (h->root.type)
|
|
{
|
|
default:
|
|
break;
|
|
|
|
case bfd_link_hash_defined:
|
|
if (abfd->selective_search)
|
|
continue;
|
|
/* Fall-through. */
|
|
case bfd_link_hash_defweak:
|
|
old_bfd = h->root.u.def.section->owner;
|
|
break;
|
|
|
|
case bfd_link_hash_common:
|
|
old_bfd = h->root.u.c.p->section->owner;
|
|
old_alignment = h->root.u.c.p->alignment_power;
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (! (_bfd_generic_link_add_one_symbol
|
|
(info, abfd, name, flags, sec, value, NULL, false, bed->collect,
|
|
(struct bfd_link_hash_entry **) sym_hash)))
|
|
goto error_free_vers;
|
|
|
|
h = *sym_hash;
|
|
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;
|
|
|
|
*sym_hash = h;
|
|
if (definition)
|
|
h->unique_global = (flags & BSF_GNU_UNIQUE) != 0;
|
|
|
|
/* Set the alignment of a common symbol. */
|
|
if ((common || bfd_is_com_section (sec))
|
|
&& h->root.type == bfd_link_hash_common)
|
|
{
|
|
unsigned int align;
|
|
|
|
if (common)
|
|
align = bfd_log2 (isym->st_value);
|
|
else
|
|
{
|
|
/* The new symbol is a common symbol in a shared object.
|
|
We need to get the alignment from the section. */
|
|
align = new_sec->alignment_power;
|
|
}
|
|
if (align > old_alignment
|
|
/* Permit an alignment power of zero if an alignment of one
|
|
is specified and no other alignments have been specified. */
|
|
|| (isym->st_value == 1 && old_alignment == 0))
|
|
h->root.u.c.p->alignment_power = align;
|
|
else
|
|
h->root.u.c.p->alignment_power = old_alignment;
|
|
}
|
|
|
|
if (is_elf_hash_table (&htab->root))
|
|
{
|
|
/* Check the alignment when a common symbol is involved. This
|
|
can change when a common symbol is overridden by a normal
|
|
definition or a common symbol is ignored due to the old
|
|
normal definition. We need to make sure the maximum
|
|
alignment is maintained. */
|
|
if ((old_alignment || common)
|
|
&& h->root.type != bfd_link_hash_common)
|
|
{
|
|
unsigned int common_align;
|
|
unsigned int normal_align;
|
|
unsigned int symbol_align;
|
|
bfd *normal_bfd;
|
|
bfd *common_bfd;
|
|
|
|
symbol_align = ffs (h->root.u.def.value) - 1;
|
|
if (h->root.u.def.section->owner != NULL
|
|
&& (h->root.u.def.section->owner->flags & DYNAMIC) == 0)
|
|
{
|
|
normal_align = h->root.u.def.section->alignment_power;
|
|
if (normal_align > symbol_align)
|
|
normal_align = symbol_align;
|
|
}
|
|
else
|
|
normal_align = symbol_align;
|
|
|
|
if (old_alignment)
|
|
{
|
|
common_align = old_alignment;
|
|
common_bfd = old_bfd;
|
|
normal_bfd = abfd;
|
|
}
|
|
else
|
|
{
|
|
common_align = bfd_log2 (isym->st_value);
|
|
common_bfd = abfd;
|
|
normal_bfd = old_bfd;
|
|
}
|
|
|
|
if (normal_align < common_align)
|
|
{
|
|
/* PR binutils/2735 */
|
|
if (normal_bfd == NULL)
|
|
_bfd_error_handler
|
|
/* xgettext:c-format */
|
|
(_("warning: alignment %u of common symbol `%s' in %pB"
|
|
" is greater than the alignment (%u) of its section %pA"),
|
|
1 << common_align, name, common_bfd,
|
|
1 << normal_align, h->root.u.def.section);
|
|
else
|
|
_bfd_error_handler
|
|
/* xgettext:c-format */
|
|
(_("warning: alignment %u of symbol `%s' in %pB"
|
|
" is smaller than %u in %pB"),
|
|
1 << normal_align, name, normal_bfd,
|
|
1 << common_align, common_bfd);
|
|
}
|
|
}
|
|
|
|
/* Remember the symbol size if it isn't undefined. */
|
|
if ((isym->st_size != 0 && isym->st_shndx != SHN_UNDEF)
|
|
&& (definition || h->size == 0))
|
|
{
|
|
if (h->size != 0
|
|
&& h->size != isym->st_size
|
|
&& ! size_change_ok)
|
|
_bfd_error_handler
|
|
/* xgettext:c-format */
|
|
(_("warning: size of symbol `%s' changed"
|
|
" from %" PRIu64 " in %pB to %" PRIu64 " in %pB"),
|
|
name, (uint64_t) h->size, old_bfd,
|
|
(uint64_t) isym->st_size, abfd);
|
|
|
|
h->size = isym->st_size;
|
|
}
|
|
|
|
/* If this is a common symbol, then we always want H->SIZE
|
|
to be the size of the common symbol. The code just above
|
|
won't fix the size if a common symbol becomes larger. We
|
|
don't warn about a size change here, because that is
|
|
covered by --warn-common. Allow changed between different
|
|
function types. */
|
|
if (h->root.type == bfd_link_hash_common)
|
|
h->size = h->root.u.c.size;
|
|
|
|
if (ELF_ST_TYPE (isym->st_info) != STT_NOTYPE
|
|
&& (definition || h->type == STT_NOTYPE))
|
|
{
|
|
unsigned int type = ELF_ST_TYPE (isym->st_info);
|
|
|
|
if (h->type != type)
|
|
{
|
|
if (h->type != STT_NOTYPE && ! type_change_ok)
|
|
_bfd_error_handler
|
|
/* xgettext:c-format */
|
|
(_("warning: type of symbol `%s' changed"
|
|
" from %d to %d in %pB"),
|
|
name, h->type, type, abfd);
|
|
|
|
h->type = type;
|
|
}
|
|
}
|
|
|
|
/* Set a flag in the hash table entry indicating the type of
|
|
reference or definition we just found. Keep a count of
|
|
the number of dynamic symbols we find. A dynamic symbol
|
|
is one which is referenced or defined by both a regular
|
|
object and a shared object. */
|
|
if (! dynamic)
|
|
{
|
|
if (! definition)
|
|
{
|
|
h->ref_regular = 1;
|
|
if (bind != STB_WEAK)
|
|
h->ref_regular_nonweak = 1;
|
|
}
|
|
else
|
|
{
|
|
BFD_ASSERT (!h->def_dynamic);
|
|
h->def_regular = 1;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
BFD_ASSERT (definition);
|
|
h->def_dynamic = 1;
|
|
h->dynindx = -2;
|
|
((struct elf64_ia64_link_hash_entry *)h)->shl = abfd;
|
|
}
|
|
}
|
|
}
|
|
|
|
free (isymbuf);
|
|
isymbuf = NULL;
|
|
|
|
/* If this object is the same format as the output object, and it is
|
|
not a shared library, then let the backend look through the
|
|
relocs.
|
|
|
|
This is required to build global offset table entries and to
|
|
arrange for dynamic relocs. It is not required for the
|
|
particular common case of linking non PIC code, even when linking
|
|
against shared libraries, but unfortunately there is no way of
|
|
knowing whether an object file has been compiled PIC or not.
|
|
Looking through the relocs is not particularly time consuming.
|
|
The problem is that we must either (1) keep the relocs in memory,
|
|
which causes the linker to require additional runtime memory or
|
|
(2) read the relocs twice from the input file, which wastes time.
|
|
This would be a good case for using mmap.
|
|
|
|
I have no idea how to handle linking PIC code into a file of a
|
|
different format. It probably can't be done. */
|
|
if (! dynamic
|
|
&& is_elf_hash_table (&htab->root)
|
|
&& bed->check_relocs != NULL
|
|
&& (*bed->relocs_compatible) (abfd->xvec, info->output_bfd->xvec))
|
|
{
|
|
asection *o;
|
|
|
|
for (o = abfd->sections; o != NULL; o = o->next)
|
|
{
|
|
Elf_Internal_Rela *internal_relocs;
|
|
bool ok;
|
|
|
|
if ((o->flags & SEC_RELOC) == 0
|
|
|| o->reloc_count == 0
|
|
|| ((info->strip == strip_all || info->strip == strip_debugger)
|
|
&& (o->flags & SEC_DEBUGGING) != 0)
|
|
|| bfd_is_abs_section (o->output_section))
|
|
continue;
|
|
|
|
internal_relocs = _bfd_elf_link_read_relocs (abfd, o, NULL, NULL,
|
|
info->keep_memory);
|
|
if (internal_relocs == NULL)
|
|
goto error_return;
|
|
|
|
ok = (*bed->check_relocs) (abfd, info, o, internal_relocs);
|
|
|
|
if (elf_section_data (o)->relocs != internal_relocs)
|
|
free (internal_relocs);
|
|
|
|
if (! ok)
|
|
goto error_return;
|
|
}
|
|
}
|
|
|
|
return true;
|
|
|
|
error_free_vers:
|
|
error_free_sym:
|
|
free (isymbuf);
|
|
error_return:
|
|
return false;
|
|
}
|
|
|
|
static bool
|
|
elf64_vms_link_add_archive_symbols (bfd *abfd, struct bfd_link_info *info)
|
|
{
|
|
int pass;
|
|
struct bfd_link_hash_entry **pundef;
|
|
struct bfd_link_hash_entry **next_pundef;
|
|
|
|
/* We only accept VMS libraries. */
|
|
if (info->output_bfd->xvec != abfd->xvec)
|
|
{
|
|
bfd_set_error (bfd_error_wrong_format);
|
|
return false;
|
|
}
|
|
|
|
/* The archive_pass field in the archive itself is used to
|
|
initialize PASS, since we may search the same archive multiple
|
|
times. */
|
|
pass = ++abfd->archive_pass;
|
|
|
|
/* Look through the list of undefined symbols. */
|
|
for (pundef = &info->hash->undefs; *pundef != NULL; pundef = next_pundef)
|
|
{
|
|
struct bfd_link_hash_entry *h;
|
|
symindex symidx;
|
|
bfd *element;
|
|
bfd *orig_element;
|
|
|
|
h = *pundef;
|
|
next_pundef = &(*pundef)->u.undef.next;
|
|
|
|
/* When a symbol is defined, it is not necessarily removed from
|
|
the list. */
|
|
if (h->type != bfd_link_hash_undefined
|
|
&& h->type != bfd_link_hash_common)
|
|
{
|
|
/* Remove this entry from the list, for general cleanliness
|
|
and because we are going to look through the list again
|
|
if we search any more libraries. We can't remove the
|
|
entry if it is the tail, because that would lose any
|
|
entries we add to the list later on. */
|
|
if (*pundef != info->hash->undefs_tail)
|
|
{
|
|
*pundef = *next_pundef;
|
|
next_pundef = pundef;
|
|
}
|
|
continue;
|
|
}
|
|
|
|
/* Look for this symbol in the archive hash table. */
|
|
symidx = _bfd_vms_lib_find_symbol (abfd, h->root.string);
|
|
if (symidx == BFD_NO_MORE_SYMBOLS)
|
|
{
|
|
/* Nothing in this slot. */
|
|
continue;
|
|
}
|
|
|
|
element = bfd_get_elt_at_index (abfd, symidx);
|
|
if (element == NULL)
|
|
return false;
|
|
|
|
if (element->archive_pass == -1 || element->archive_pass == pass)
|
|
{
|
|
/* Next symbol if this archive is wrong or already handled. */
|
|
continue;
|
|
}
|
|
|
|
orig_element = element;
|
|
if (bfd_is_thin_archive (abfd))
|
|
{
|
|
element = _bfd_vms_lib_get_imagelib_file (element);
|
|
if (element == NULL || !bfd_check_format (element, bfd_object))
|
|
{
|
|
orig_element->archive_pass = -1;
|
|
return false;
|
|
}
|
|
}
|
|
else if (! bfd_check_format (element, bfd_object))
|
|
{
|
|
element->archive_pass = -1;
|
|
return false;
|
|
}
|
|
|
|
/* Unlike the generic linker, we know that this element provides
|
|
a definition for an undefined symbol and we know that we want
|
|
to include it. We don't need to check anything. */
|
|
if (! (*info->callbacks->add_archive_element) (info, element,
|
|
h->root.string, &element))
|
|
continue;
|
|
if (! elf64_vms_link_add_object_symbols (element, info))
|
|
return false;
|
|
|
|
orig_element->archive_pass = pass;
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
static bool
|
|
elf64_vms_bfd_link_add_symbols (bfd *abfd, struct bfd_link_info *info)
|
|
{
|
|
switch (bfd_get_format (abfd))
|
|
{
|
|
case bfd_object:
|
|
return elf64_vms_link_add_object_symbols (abfd, info);
|
|
break;
|
|
case bfd_archive:
|
|
return elf64_vms_link_add_archive_symbols (abfd, info);
|
|
break;
|
|
default:
|
|
bfd_set_error (bfd_error_wrong_format);
|
|
return false;
|
|
}
|
|
}
|
|
|
|
static bool
|
|
elf64_ia64_vms_mkobject (bfd *abfd)
|
|
{
|
|
return bfd_elf_allocate_object
|
|
(abfd, sizeof (struct elf64_ia64_vms_obj_tdata), IA64_ELF_DATA);
|
|
}
|
|
|
|
|
|
/* Size-dependent data and functions. */
|
|
static const struct elf_size_info elf64_ia64_vms_size_info = {
|
|
sizeof (Elf64_External_VMS_Ehdr),
|
|
sizeof (Elf64_External_Phdr),
|
|
sizeof (Elf64_External_Shdr),
|
|
sizeof (Elf64_External_Rel),
|
|
sizeof (Elf64_External_Rela),
|
|
sizeof (Elf64_External_Sym),
|
|
sizeof (Elf64_External_Dyn),
|
|
sizeof (Elf_External_Note),
|
|
4,
|
|
1,
|
|
64, 3, /* ARCH_SIZE, LOG_FILE_ALIGN */
|
|
ELFCLASS64, EV_CURRENT,
|
|
bfd_elf64_write_out_phdrs,
|
|
elf64_vms_write_shdrs_and_ehdr,
|
|
bfd_elf64_checksum_contents,
|
|
bfd_elf64_write_relocs,
|
|
bfd_elf64_swap_symbol_in,
|
|
bfd_elf64_swap_symbol_out,
|
|
bfd_elf64_slurp_reloc_table,
|
|
bfd_elf64_slurp_symbol_table,
|
|
bfd_elf64_swap_dyn_in,
|
|
bfd_elf64_swap_dyn_out,
|
|
bfd_elf64_swap_reloc_in,
|
|
bfd_elf64_swap_reloc_out,
|
|
bfd_elf64_swap_reloca_in,
|
|
bfd_elf64_swap_reloca_out
|
|
};
|
|
|
|
#define ELF_ARCH bfd_arch_ia64
|
|
#define ELF_MACHINE_CODE EM_IA_64
|
|
#define ELF_MAXPAGESIZE 0x10000 /* 64KB */
|
|
#define ELF_COMMONPAGESIZE 0x200 /* 16KB */
|
|
|
|
#define elf_backend_section_from_shdr \
|
|
elf64_ia64_section_from_shdr
|
|
#define elf_backend_section_flags \
|
|
elf64_ia64_section_flags
|
|
#define elf_backend_fake_sections \
|
|
elf64_ia64_fake_sections
|
|
#define elf_backend_final_write_processing \
|
|
elf64_ia64_final_write_processing
|
|
#define elf_backend_add_symbol_hook \
|
|
elf64_ia64_add_symbol_hook
|
|
#define elf_info_to_howto \
|
|
elf64_ia64_info_to_howto
|
|
|
|
#define bfd_elf64_bfd_reloc_type_lookup \
|
|
ia64_elf_reloc_type_lookup
|
|
#define bfd_elf64_bfd_reloc_name_lookup \
|
|
ia64_elf_reloc_name_lookup
|
|
#define bfd_elf64_bfd_is_local_label_name \
|
|
elf64_ia64_is_local_label_name
|
|
#define bfd_elf64_bfd_relax_section \
|
|
elf64_ia64_relax_section
|
|
|
|
#define elf_backend_object_p \
|
|
elf64_ia64_object_p
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/* Stuff for the BFD linker: */
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#define bfd_elf64_bfd_link_hash_table_create \
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elf64_ia64_hash_table_create
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#define elf_backend_create_dynamic_sections \
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elf64_ia64_create_dynamic_sections
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#define elf_backend_check_relocs \
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elf64_ia64_check_relocs
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#define elf_backend_adjust_dynamic_symbol \
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elf64_ia64_adjust_dynamic_symbol
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#define elf_backend_size_dynamic_sections \
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elf64_ia64_size_dynamic_sections
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#define elf_backend_omit_section_dynsym \
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_bfd_elf_omit_section_dynsym_all
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#define elf_backend_relocate_section \
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elf64_ia64_relocate_section
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#define elf_backend_finish_dynamic_symbol \
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elf64_ia64_finish_dynamic_symbol
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#define elf_backend_finish_dynamic_sections \
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elf64_ia64_finish_dynamic_sections
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#define bfd_elf64_bfd_final_link \
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elf64_ia64_final_link
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#define bfd_elf64_bfd_merge_private_bfd_data \
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elf64_ia64_merge_private_bfd_data
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#define bfd_elf64_bfd_set_private_flags \
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elf64_ia64_set_private_flags
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#define bfd_elf64_bfd_print_private_bfd_data \
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elf64_ia64_print_private_bfd_data
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#define elf_backend_plt_readonly 1
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#define elf_backend_want_plt_sym 0
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#define elf_backend_plt_alignment 5
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#define elf_backend_got_header_size 0
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#define elf_backend_want_got_plt 1
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#define elf_backend_may_use_rel_p 1
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#define elf_backend_may_use_rela_p 1
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#define elf_backend_default_use_rela_p 1
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#define elf_backend_want_dynbss 0
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#define elf_backend_hide_symbol elf64_ia64_hash_hide_symbol
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#define elf_backend_fixup_symbol _bfd_elf_link_hash_fixup_symbol
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#define elf_backend_reloc_type_class elf64_ia64_reloc_type_class
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#define elf_backend_rela_normal 1
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#define elf_backend_special_sections elf64_ia64_special_sections
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#define elf_backend_default_execstack 0
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/* FIXME: PR 290: The Intel C compiler generates SHT_IA_64_UNWIND with
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SHF_LINK_ORDER. But it doesn't set the sh_link or sh_info fields.
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We don't want to flood users with so many error messages. We turn
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off the warning for now. It will be turned on later when the Intel
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compiler is fixed. */
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#define elf_backend_link_order_error_handler NULL
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/* VMS-specific vectors. */
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#undef TARGET_LITTLE_SYM
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#define TARGET_LITTLE_SYM ia64_elf64_vms_vec
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#undef TARGET_LITTLE_NAME
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#define TARGET_LITTLE_NAME "elf64-ia64-vms"
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#undef TARGET_BIG_SYM
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#undef TARGET_BIG_NAME
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/* These are VMS specific functions. */
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#undef elf_backend_object_p
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#define elf_backend_object_p elf64_vms_object_p
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#undef elf_backend_section_from_shdr
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#define elf_backend_section_from_shdr elf64_vms_section_from_shdr
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#undef elf_backend_init_file_header
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#define elf_backend_init_file_header elf64_vms_init_file_header
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#undef elf_backend_section_processing
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#define elf_backend_section_processing elf64_vms_section_processing
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#undef elf_backend_final_write_processing
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#define elf_backend_final_write_processing elf64_vms_final_write_processing
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#undef bfd_elf64_close_and_cleanup
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#define bfd_elf64_close_and_cleanup elf64_vms_close_and_cleanup
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#undef elf_backend_section_from_bfd_section
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#undef elf_backend_symbol_processing
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|
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#undef elf_backend_want_p_paddr_set_to_zero
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|
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#undef ELF_OSABI
|
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#define ELF_OSABI ELFOSABI_OPENVMS
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|
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#undef ELF_MAXPAGESIZE
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#define ELF_MAXPAGESIZE 0x10000 /* 64KB */
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|
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#undef elf64_bed
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#define elf64_bed elf64_ia64_vms_bed
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#define elf_backend_size_info elf64_ia64_vms_size_info
|
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/* Use VMS-style archives (in particular, don't use the standard coff
|
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archive format). */
|
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#define bfd_elf64_archive_functions
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#undef bfd_elf64_archive_p
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#define bfd_elf64_archive_p _bfd_vms_lib_ia64_archive_p
|
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#undef bfd_elf64_write_archive_contents
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#define bfd_elf64_write_archive_contents _bfd_vms_lib_write_archive_contents
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#undef bfd_elf64_mkarchive
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#define bfd_elf64_mkarchive _bfd_vms_lib_ia64_mkarchive
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#define bfd_elf64_archive_slurp_armap \
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_bfd_vms_lib_slurp_armap
|
|
#define bfd_elf64_archive_slurp_extended_name_table \
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_bfd_vms_lib_slurp_extended_name_table
|
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#define bfd_elf64_archive_construct_extended_name_table \
|
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_bfd_vms_lib_construct_extended_name_table
|
|
#define bfd_elf64_archive_truncate_arname \
|
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_bfd_vms_lib_truncate_arname
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#define bfd_elf64_archive_write_armap \
|
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_bfd_vms_lib_write_armap
|
|
#define bfd_elf64_archive_read_ar_hdr \
|
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_bfd_vms_lib_read_ar_hdr
|
|
#define bfd_elf64_archive_write_ar_hdr \
|
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_bfd_vms_lib_write_ar_hdr
|
|
#define bfd_elf64_archive_openr_next_archived_file \
|
|
_bfd_vms_lib_openr_next_archived_file
|
|
#define bfd_elf64_archive_get_elt_at_index \
|
|
_bfd_vms_lib_get_elt_at_index
|
|
#define bfd_elf64_archive_generic_stat_arch_elt \
|
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_bfd_vms_lib_generic_stat_arch_elt
|
|
#define bfd_elf64_archive_update_armap_timestamp \
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_bfd_vms_lib_update_armap_timestamp
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|
|
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/* VMS link methods. */
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|
#undef bfd_elf64_bfd_link_add_symbols
|
|
#define bfd_elf64_bfd_link_add_symbols elf64_vms_bfd_link_add_symbols
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|
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|
#undef elf_backend_want_got_sym
|
|
#define elf_backend_want_got_sym 0
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|
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#undef bfd_elf64_mkobject
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#define bfd_elf64_mkobject elf64_ia64_vms_mkobject
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/* Redefine to align segments on block size. */
|
|
#undef ELF_MAXPAGESIZE
|
|
#define ELF_MAXPAGESIZE 0x200 /* 512B */
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|
|
#undef elf_backend_want_got_plt
|
|
#define elf_backend_want_got_plt 0
|
|
|
|
#include "elf64-target.h"
|