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ec88c42e5e
dynamic object as being in the .bss section of the object, rather than as being undefined.
2077 lines
62 KiB
C
2077 lines
62 KiB
C
/* BFD backend for SunOS binaries.
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Copyright (C) 1990, 91, 92, 93, 94 Free Software Foundation, Inc.
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Written by Cygnus Support.
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This file is part of BFD, the Binary File Descriptor library.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
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#define ARCH 32
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#define TARGETNAME "a.out-sunos-big"
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#define MY(OP) CAT(sunos_big_,OP)
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#include "bfd.h"
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#include "bfdlink.h"
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#include "libaout.h"
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/* Static routines defined in this file. */
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static boolean sunos_read_dynamic_info PARAMS ((bfd *));
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static long sunos_get_dynamic_symtab_upper_bound PARAMS ((bfd *));
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static long sunos_canonicalize_dynamic_symtab PARAMS ((bfd *, asymbol **));
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static long sunos_get_dynamic_reloc_upper_bound PARAMS ((bfd *));
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static long sunos_canonicalize_dynamic_reloc
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PARAMS ((bfd *, arelent **, asymbol **));
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static struct bfd_hash_entry *sunos_link_hash_newfunc
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PARAMS ((struct bfd_hash_entry *, struct bfd_hash_table *, const char *));
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static struct bfd_link_hash_table *sunos_link_hash_table_create
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PARAMS ((bfd *));
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static boolean sunos_add_dynamic_symbols
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PARAMS ((bfd *, struct bfd_link_info *));
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static boolean sunos_add_one_symbol
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PARAMS ((struct bfd_link_info *, bfd *, const char *, flagword, asection *,
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bfd_vma, const char *, boolean, boolean,
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struct bfd_link_hash_entry **));
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static boolean sunos_scan_relocs
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PARAMS ((struct bfd_link_info *, bfd *, asection *, bfd_size_type));
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static boolean sunos_scan_std_relocs
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PARAMS ((struct bfd_link_info *, bfd *, asection *,
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const struct reloc_std_external *, bfd_size_type));
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static boolean sunos_scan_ext_relocs
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PARAMS ((struct bfd_link_info *, bfd *, asection *,
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const struct reloc_ext_external *, bfd_size_type));
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static boolean sunos_link_dynamic_object
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PARAMS ((struct bfd_link_info *, bfd *));
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static boolean sunos_write_dynamic_symbol
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PARAMS ((bfd *, struct bfd_link_info *, struct aout_link_hash_entry *));
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static boolean sunos_check_dynamic_reloc
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PARAMS ((struct bfd_link_info *, bfd *, asection *,
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struct aout_link_hash_entry *, PTR, boolean *));
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static boolean sunos_finish_dynamic_link
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PARAMS ((bfd *, struct bfd_link_info *));
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#define MY_get_dynamic_symtab_upper_bound sunos_get_dynamic_symtab_upper_bound
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#define MY_canonicalize_dynamic_symtab sunos_canonicalize_dynamic_symtab
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#define MY_get_dynamic_reloc_upper_bound sunos_get_dynamic_reloc_upper_bound
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#define MY_canonicalize_dynamic_reloc sunos_canonicalize_dynamic_reloc
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#define MY_bfd_link_hash_table_create sunos_link_hash_table_create
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#define MY_add_dynamic_symbols sunos_add_dynamic_symbols
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#define MY_add_one_symbol sunos_add_one_symbol
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#define MY_link_dynamic_object sunos_link_dynamic_object
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#define MY_write_dynamic_symbol sunos_write_dynamic_symbol
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#define MY_check_dynamic_reloc sunos_check_dynamic_reloc
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#define MY_finish_dynamic_link sunos_finish_dynamic_link
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/* Include the usual a.out support. */
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#include "aoutf1.h"
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/* SunOS shared library support. We store a pointer to this structure
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in obj_aout_dynamic_info (abfd). */
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struct sunos_dynamic_info
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{
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/* Whether we found any dynamic information. */
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boolean valid;
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/* Dynamic information. */
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struct internal_sun4_dynamic_link dyninfo;
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/* Number of dynamic symbols. */
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long dynsym_count;
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/* Read in nlists for dynamic symbols. */
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struct external_nlist *dynsym;
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/* asymbol structures for dynamic symbols. */
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aout_symbol_type *canonical_dynsym;
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/* Read in dynamic string table. */
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char *dynstr;
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/* Number of dynamic relocs. */
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long dynrel_count;
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/* Read in dynamic relocs. This may be reloc_std_external or
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reloc_ext_external. */
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PTR dynrel;
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/* arelent structures for dynamic relocs. */
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arelent *canonical_dynrel;
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};
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/* The hash table of dynamic symbols is composed of two word entries.
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See include/aout/sun4.h for details. */
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#define HASH_ENTRY_SIZE (2 * BYTES_IN_WORD)
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/* Read in the basic dynamic information. This locates the __DYNAMIC
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structure and uses it to find the dynamic_link structure. It
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creates and saves a sunos_dynamic_info structure. If it can't find
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__DYNAMIC, it sets the valid field of the sunos_dynamic_info
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structure to false to avoid doing this work again. */
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static boolean
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sunos_read_dynamic_info (abfd)
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bfd *abfd;
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{
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struct sunos_dynamic_info *info;
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asection *dynsec;
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file_ptr dynoff;
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struct external_sun4_dynamic dyninfo;
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unsigned long dynver;
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struct external_sun4_dynamic_link linkinfo;
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if (obj_aout_dynamic_info (abfd) != (PTR) NULL)
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return true;
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if ((abfd->flags & DYNAMIC) == 0)
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{
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bfd_set_error (bfd_error_invalid_operation);
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return false;
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}
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info = ((struct sunos_dynamic_info *)
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bfd_zalloc (abfd, sizeof (struct sunos_dynamic_info)));
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if (!info)
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{
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bfd_set_error (bfd_error_no_memory);
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return false;
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}
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info->valid = false;
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info->dynsym = NULL;
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info->dynstr = NULL;
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info->canonical_dynsym = NULL;
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info->dynrel = NULL;
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info->canonical_dynrel = NULL;
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obj_aout_dynamic_info (abfd) = (PTR) info;
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/* This code used to look for the __DYNAMIC symbol to locate the dynamic
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linking information.
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However this inhibits recovering the dynamic symbols from a
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stripped object file, so blindly assume that the dynamic linking
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information is located at the start of the data section.
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We could verify this assumption later by looking through the dynamic
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symbols for the __DYNAMIC symbol. */
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if ((abfd->flags & DYNAMIC) == 0)
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return true;
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if (! bfd_get_section_contents (abfd, obj_datasec (abfd), (PTR) &dyninfo,
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(file_ptr) 0, sizeof dyninfo))
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return true;
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dynver = GET_WORD (abfd, dyninfo.ld_version);
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if (dynver != 2 && dynver != 3)
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return true;
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dynoff = GET_WORD (abfd, dyninfo.ld);
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/* dynoff is a virtual address. It is probably always in the .data
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section, but this code should work even if it moves. */
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if (dynoff < bfd_get_section_vma (abfd, obj_datasec (abfd)))
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dynsec = obj_textsec (abfd);
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else
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dynsec = obj_datasec (abfd);
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dynoff -= bfd_get_section_vma (abfd, dynsec);
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if (dynoff < 0 || dynoff > bfd_section_size (abfd, dynsec))
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return true;
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/* This executable appears to be dynamically linked in a way that we
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can understand. */
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if (! bfd_get_section_contents (abfd, dynsec, (PTR) &linkinfo, dynoff,
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(bfd_size_type) sizeof linkinfo))
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return true;
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/* Swap in the dynamic link information. */
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info->dyninfo.ld_loaded = GET_WORD (abfd, linkinfo.ld_loaded);
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info->dyninfo.ld_need = GET_WORD (abfd, linkinfo.ld_need);
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info->dyninfo.ld_rules = GET_WORD (abfd, linkinfo.ld_rules);
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info->dyninfo.ld_got = GET_WORD (abfd, linkinfo.ld_got);
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info->dyninfo.ld_plt = GET_WORD (abfd, linkinfo.ld_plt);
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info->dyninfo.ld_rel = GET_WORD (abfd, linkinfo.ld_rel);
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info->dyninfo.ld_hash = GET_WORD (abfd, linkinfo.ld_hash);
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info->dyninfo.ld_stab = GET_WORD (abfd, linkinfo.ld_stab);
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info->dyninfo.ld_stab_hash = GET_WORD (abfd, linkinfo.ld_stab_hash);
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info->dyninfo.ld_buckets = GET_WORD (abfd, linkinfo.ld_buckets);
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info->dyninfo.ld_symbols = GET_WORD (abfd, linkinfo.ld_symbols);
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info->dyninfo.ld_symb_size = GET_WORD (abfd, linkinfo.ld_symb_size);
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info->dyninfo.ld_text = GET_WORD (abfd, linkinfo.ld_text);
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info->dyninfo.ld_plt_sz = GET_WORD (abfd, linkinfo.ld_plt_sz);
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/* The only way to get the size of the symbol information appears to
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be to determine the distance between it and the string table. */
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info->dynsym_count = ((info->dyninfo.ld_symbols - info->dyninfo.ld_stab)
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/ EXTERNAL_NLIST_SIZE);
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BFD_ASSERT (info->dynsym_count * EXTERNAL_NLIST_SIZE
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== info->dyninfo.ld_symbols - info->dyninfo.ld_stab);
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/* Similarly, the relocs end at the hash table. */
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info->dynrel_count = ((info->dyninfo.ld_hash - info->dyninfo.ld_rel)
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/ obj_reloc_entry_size (abfd));
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BFD_ASSERT (info->dynrel_count * obj_reloc_entry_size (abfd)
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== info->dyninfo.ld_hash - info->dyninfo.ld_rel);
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info->valid = true;
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return true;
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}
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/* Return the amount of memory required for the dynamic symbols. */
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static long
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sunos_get_dynamic_symtab_upper_bound (abfd)
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bfd *abfd;
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{
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struct sunos_dynamic_info *info;
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if (! sunos_read_dynamic_info (abfd))
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return -1;
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info = (struct sunos_dynamic_info *) obj_aout_dynamic_info (abfd);
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if (! info->valid)
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{
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bfd_set_error (bfd_error_no_symbols);
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return -1;
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}
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return (info->dynsym_count + 1) * sizeof (asymbol *);
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}
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/* Read in the dynamic symbols. */
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static long
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sunos_canonicalize_dynamic_symtab (abfd, storage)
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bfd *abfd;
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asymbol **storage;
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{
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struct sunos_dynamic_info *info;
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long i;
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/* Get the general dynamic information. */
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if (obj_aout_dynamic_info (abfd) == NULL)
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{
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if (! sunos_read_dynamic_info (abfd))
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return -1;
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}
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info = (struct sunos_dynamic_info *) obj_aout_dynamic_info (abfd);
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if (! info->valid)
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{
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bfd_set_error (bfd_error_no_symbols);
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return -1;
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}
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/* Get the dynamic nlist structures. */
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if (info->dynsym == (struct external_nlist *) NULL)
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{
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info->dynsym = ((struct external_nlist *)
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bfd_alloc (abfd,
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(info->dynsym_count
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* EXTERNAL_NLIST_SIZE)));
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if (info->dynsym == NULL && info->dynsym_count != 0)
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{
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bfd_set_error (bfd_error_no_memory);
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return -1;
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}
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if (bfd_seek (abfd, info->dyninfo.ld_stab, SEEK_SET) != 0
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|| (bfd_read ((PTR) info->dynsym, info->dynsym_count,
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EXTERNAL_NLIST_SIZE, abfd)
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!= info->dynsym_count * EXTERNAL_NLIST_SIZE))
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{
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if (info->dynsym != NULL)
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{
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bfd_release (abfd, info->dynsym);
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info->dynsym = NULL;
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}
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return -1;
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}
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}
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/* Get the dynamic strings. */
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if (info->dynstr == (char *) NULL)
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{
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info->dynstr = (char *) bfd_alloc (abfd, info->dyninfo.ld_symb_size);
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if (info->dynstr == NULL && info->dyninfo.ld_symb_size != 0)
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{
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bfd_set_error (bfd_error_no_memory);
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return -1;
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}
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if (bfd_seek (abfd, info->dyninfo.ld_symbols, SEEK_SET) != 0
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|| (bfd_read ((PTR) info->dynstr, 1, info->dyninfo.ld_symb_size,
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abfd)
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!= info->dyninfo.ld_symb_size))
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{
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if (info->dynstr != NULL)
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{
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bfd_release (abfd, info->dynstr);
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info->dynstr = NULL;
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}
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return -1;
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}
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}
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#ifdef CHECK_DYNAMIC_HASH
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/* Check my understanding of the dynamic hash table by making sure
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that each symbol can be located in the hash table. */
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{
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bfd_size_type table_size;
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bfd_byte *table;
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bfd_size_type i;
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if (info->dyninfo.ld_buckets > info->dynsym_count)
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abort ();
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table_size = info->dyninfo.ld_stab - info->dyninfo.ld_hash;
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table = (bfd_byte *) malloc (table_size);
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if (table == NULL && table_size != 0)
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abort ();
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if (bfd_seek (abfd, info->dyninfo.ld_hash, SEEK_SET) != 0
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|| bfd_read ((PTR) table, 1, table_size, abfd) != table_size)
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abort ();
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for (i = 0; i < info->dynsym_count; i++)
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{
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unsigned char *name;
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unsigned long hash;
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name = ((unsigned char *) info->dynstr
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+ GET_WORD (abfd, info->dynsym[i].e_strx));
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hash = 0;
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while (*name != '\0')
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hash = (hash << 1) + *name++;
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hash &= 0x7fffffff;
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hash %= info->dyninfo.ld_buckets;
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while (GET_WORD (abfd, table + hash * HASH_ENTRY_SIZE) != i)
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{
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hash = GET_WORD (abfd,
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table + hash * HASH_ENTRY_SIZE + BYTES_IN_WORD);
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if (hash == 0 || hash >= table_size / HASH_ENTRY_SIZE)
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abort ();
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}
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}
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free (table);
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}
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#endif /* CHECK_DYNAMIC_HASH */
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/* Get the asymbol structures corresponding to the dynamic nlist
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structures. */
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if (info->canonical_dynsym == (aout_symbol_type *) NULL)
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{
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info->canonical_dynsym = ((aout_symbol_type *)
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bfd_alloc (abfd,
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(info->dynsym_count
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* sizeof (aout_symbol_type))));
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if (info->canonical_dynsym == NULL && info->dynsym_count != 0)
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{
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bfd_set_error (bfd_error_no_memory);
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return -1;
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}
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if (! aout_32_translate_symbol_table (abfd, info->canonical_dynsym,
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info->dynsym, info->dynsym_count,
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info->dynstr,
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info->dyninfo.ld_symb_size,
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true))
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{
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if (info->canonical_dynsym != NULL)
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{
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bfd_release (abfd, info->canonical_dynsym);
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info->canonical_dynsym = NULL;
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}
|
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return -1;
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}
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}
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|
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/* Return pointers to the dynamic asymbol structures. */
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for (i = 0; i < info->dynsym_count; i++)
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*storage++ = (asymbol *) (info->canonical_dynsym + i);
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*storage = NULL;
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return info->dynsym_count;
|
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}
|
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|
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/* Return the amount of memory required for the dynamic relocs. */
|
||
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static long
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sunos_get_dynamic_reloc_upper_bound (abfd)
|
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bfd *abfd;
|
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{
|
||
struct sunos_dynamic_info *info;
|
||
|
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if (! sunos_read_dynamic_info (abfd))
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return -1;
|
||
|
||
info = (struct sunos_dynamic_info *) obj_aout_dynamic_info (abfd);
|
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if (! info->valid)
|
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{
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bfd_set_error (bfd_error_no_symbols);
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return -1;
|
||
}
|
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|
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return (info->dynrel_count + 1) * sizeof (arelent *);
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}
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||
|
||
/* Read in the dynamic relocs. */
|
||
|
||
static long
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||
sunos_canonicalize_dynamic_reloc (abfd, storage, syms)
|
||
bfd *abfd;
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||
arelent **storage;
|
||
asymbol **syms;
|
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{
|
||
struct sunos_dynamic_info *info;
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long i;
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||
|
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/* Get the general dynamic information. */
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if (obj_aout_dynamic_info (abfd) == (PTR) NULL)
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{
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if (! sunos_read_dynamic_info (abfd))
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return -1;
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}
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info = (struct sunos_dynamic_info *) obj_aout_dynamic_info (abfd);
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if (! info->valid)
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{
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bfd_set_error (bfd_error_no_symbols);
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return -1;
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}
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|
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/* Get the dynamic reloc information. */
|
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if (info->dynrel == NULL)
|
||
{
|
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info->dynrel = (PTR) bfd_alloc (abfd,
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(info->dynrel_count
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* obj_reloc_entry_size (abfd)));
|
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if (info->dynrel == NULL && info->dynrel_count != 0)
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{
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bfd_set_error (bfd_error_no_memory);
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return -1;
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}
|
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if (bfd_seek (abfd, info->dyninfo.ld_rel, SEEK_SET) != 0
|
||
|| (bfd_read ((PTR) info->dynrel, info->dynrel_count,
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||
obj_reloc_entry_size (abfd), abfd)
|
||
!= info->dynrel_count * obj_reloc_entry_size (abfd)))
|
||
{
|
||
if (info->dynrel != NULL)
|
||
{
|
||
bfd_release (abfd, info->dynrel);
|
||
info->dynrel = NULL;
|
||
}
|
||
return -1;
|
||
}
|
||
}
|
||
|
||
/* Get the arelent structures corresponding to the dynamic reloc
|
||
information. */
|
||
if (info->canonical_dynrel == (arelent *) NULL)
|
||
{
|
||
arelent *to;
|
||
|
||
info->canonical_dynrel = ((arelent *)
|
||
bfd_alloc (abfd,
|
||
(info->dynrel_count
|
||
* sizeof (arelent))));
|
||
if (info->canonical_dynrel == NULL && info->dynrel_count != 0)
|
||
{
|
||
bfd_set_error (bfd_error_no_memory);
|
||
return -1;
|
||
}
|
||
|
||
to = info->canonical_dynrel;
|
||
|
||
if (obj_reloc_entry_size (abfd) == RELOC_EXT_SIZE)
|
||
{
|
||
register struct reloc_ext_external *p;
|
||
struct reloc_ext_external *pend;
|
||
|
||
p = (struct reloc_ext_external *) info->dynrel;
|
||
pend = p + info->dynrel_count;
|
||
for (; p < pend; p++, to++)
|
||
NAME(aout,swap_ext_reloc_in) (abfd, p, to, syms);
|
||
}
|
||
else
|
||
{
|
||
register struct reloc_std_external *p;
|
||
struct reloc_std_external *pend;
|
||
|
||
p = (struct reloc_std_external *) info->dynrel;
|
||
pend = p + info->dynrel_count;
|
||
for (; p < pend; p++, to++)
|
||
NAME(aout,swap_std_reloc_in) (abfd, p, to, syms);
|
||
}
|
||
}
|
||
|
||
/* Return pointers to the dynamic arelent structures. */
|
||
for (i = 0; i < info->dynrel_count; i++)
|
||
*storage++ = info->canonical_dynrel + i;
|
||
*storage = NULL;
|
||
|
||
return info->dynrel_count;
|
||
}
|
||
|
||
/* Code to handle linking of SunOS shared libraries. */
|
||
|
||
/* A SPARC procedure linkage table entry is 12 bytes. The first entry
|
||
in the table is a jump which is filled in by the runtime linker.
|
||
The remaining entries are branches back to the first entry,
|
||
followed by an index into the relocation table encoded to look like
|
||
a sethi of %g0. */
|
||
|
||
#define SPARC_PLT_ENTRY_SIZE (12)
|
||
|
||
static bfd_byte sparc_plt_first_entry[SPARC_PLT_ENTRY_SIZE] =
|
||
{
|
||
/* sethi %hi(0),%g1; address filled in by runtime linker. */
|
||
0x3, 0, 0, 0,
|
||
/* jmp %g1; offset filled in by runtime linker. */
|
||
0x81, 0xc0, 0x60, 0,
|
||
/* nop */
|
||
0x1, 0, 0, 0
|
||
};
|
||
|
||
/* save %sp, -96, %sp */
|
||
#define SPARC_PLT_ENTRY_WORD0 0x9de3bfa0
|
||
/* call; address filled in later. */
|
||
#define SPARC_PLT_ENTRY_WORD1 0x40000000
|
||
/* sethi; reloc index filled in later. */
|
||
#define SPARC_PLT_ENTRY_WORD2 0x01000000
|
||
|
||
/* An m68k procedure linkage table entry is 8 bytes. The first entry
|
||
in the table is a jump which is filled in the by the runtime
|
||
linker. The remaining entries are branches back to the first
|
||
entry, followed by a two byte index into the relocation table. */
|
||
|
||
#define M68K_PLT_ENTRY_SIZE (8)
|
||
|
||
static bfd_byte m68k_plt_first_entry[M68K_PLT_ENTRY_SIZE] =
|
||
{
|
||
/* jmps @# */
|
||
0x4e, 0xf9,
|
||
/* Filled in by runtime linker with a magic address. */
|
||
0, 0, 0, 0,
|
||
/* Not used? */
|
||
0, 0
|
||
};
|
||
|
||
/* bsrl */
|
||
#define M68K_PLT_ENTRY_WORD0 (0x61ff)
|
||
/* Remaining words filled in later. */
|
||
|
||
/* An entry in the SunOS linker hash table. */
|
||
|
||
struct sunos_link_hash_entry
|
||
{
|
||
struct aout_link_hash_entry root;
|
||
|
||
/* If this is a dynamic symbol, this is its index into the dynamic
|
||
symbol table. This is initialized to -1. As the linker looks at
|
||
the input files, it changes this to -2 if it will be added to the
|
||
dynamic symbol table. After all the input files have been seen,
|
||
the linker will know whether to build a dynamic symbol table; if
|
||
it does build one, this becomes the index into the table. */
|
||
long dynindx;
|
||
|
||
/* If this is a dynamic symbol, this is the index of the name in the
|
||
dynamic symbol string table. */
|
||
long dynstr_index;
|
||
|
||
/* Some linker flags. */
|
||
unsigned char flags;
|
||
/* Symbol is referenced by a regular object. */
|
||
#define SUNOS_REF_REGULAR 01
|
||
/* Symbol is defined by a regular object. */
|
||
#define SUNOS_DEF_REGULAR 02
|
||
/* Symbol is referenced by a dynamic object. */
|
||
#define SUNOS_REF_DYNAMIC 010
|
||
/* Symbol is defined by a dynamic object. */
|
||
#define SUNOS_DEF_DYNAMIC 020
|
||
};
|
||
|
||
/* The SunOS linker hash table. */
|
||
|
||
struct sunos_link_hash_table
|
||
{
|
||
struct aout_link_hash_table root;
|
||
|
||
/* The first dynamic object found during the link. */
|
||
bfd *dynobj;
|
||
|
||
/* The number of dynamic symbols. */
|
||
size_t dynsymcount;
|
||
|
||
/* The number of buckets in the hash table. */
|
||
size_t bucketcount;
|
||
};
|
||
|
||
/* Routine to create an entry in an SunOS link hash table. */
|
||
|
||
static struct bfd_hash_entry *
|
||
sunos_link_hash_newfunc (entry, table, string)
|
||
struct bfd_hash_entry *entry;
|
||
struct bfd_hash_table *table;
|
||
const char *string;
|
||
{
|
||
struct sunos_link_hash_entry *ret = (struct sunos_link_hash_entry *) entry;
|
||
|
||
/* Allocate the structure if it has not already been allocated by a
|
||
subclass. */
|
||
if (ret == (struct sunos_link_hash_entry *) NULL)
|
||
ret = ((struct sunos_link_hash_entry *)
|
||
bfd_hash_allocate (table, sizeof (struct sunos_link_hash_entry)));
|
||
if (ret == (struct sunos_link_hash_entry *) NULL)
|
||
{
|
||
bfd_set_error (bfd_error_no_memory);
|
||
return (struct bfd_hash_entry *) ret;
|
||
}
|
||
|
||
/* Call the allocation method of the superclass. */
|
||
ret = ((struct sunos_link_hash_entry *)
|
||
NAME(aout,link_hash_newfunc) ((struct bfd_hash_entry *) ret,
|
||
table, string));
|
||
if (ret != NULL)
|
||
{
|
||
/* Set local fields. */
|
||
ret->dynindx = -1;
|
||
ret->dynstr_index = -1;
|
||
ret->flags = 0;
|
||
}
|
||
|
||
return (struct bfd_hash_entry *) ret;
|
||
}
|
||
|
||
/* Create a SunOS link hash table. */
|
||
|
||
static struct bfd_link_hash_table *
|
||
sunos_link_hash_table_create (abfd)
|
||
bfd *abfd;
|
||
{
|
||
struct sunos_link_hash_table *ret;
|
||
|
||
ret = ((struct sunos_link_hash_table *)
|
||
malloc (sizeof (struct sunos_link_hash_table)));
|
||
if (ret == (struct sunos_link_hash_table *) NULL)
|
||
{
|
||
bfd_set_error (bfd_error_no_memory);
|
||
return (struct bfd_link_hash_table *) NULL;
|
||
}
|
||
if (! NAME(aout,link_hash_table_init) (&ret->root, abfd,
|
||
sunos_link_hash_newfunc))
|
||
{
|
||
free (ret);
|
||
return (struct bfd_link_hash_table *) NULL;
|
||
}
|
||
|
||
ret->dynobj = NULL;
|
||
ret->dynsymcount = 0;
|
||
ret->bucketcount = 0;
|
||
|
||
return &ret->root.root;
|
||
}
|
||
|
||
/* Look up an entry in an SunOS link hash table. */
|
||
|
||
#define sunos_link_hash_lookup(table, string, create, copy, follow) \
|
||
((struct sunos_link_hash_entry *) \
|
||
aout_link_hash_lookup (&(table)->root, (string), (create), (copy),\
|
||
(follow)))
|
||
|
||
/* Traverse a SunOS link hash table. */
|
||
|
||
#define sunos_link_hash_traverse(table, func, info) \
|
||
(aout_link_hash_traverse \
|
||
(&(table)->root, \
|
||
(boolean (*) PARAMS ((struct aout_link_hash_entry *, PTR))) (func), \
|
||
(info)))
|
||
|
||
/* Get the SunOS link hash table from the info structure. This is
|
||
just a cast. */
|
||
|
||
#define sunos_hash_table(p) ((struct sunos_link_hash_table *) ((p)->hash))
|
||
|
||
static boolean sunos_scan_dynamic_symbol
|
||
PARAMS ((struct sunos_link_hash_entry *, PTR));
|
||
|
||
/* Add dynamic symbols during a link. This is called by the a.out
|
||
backend linker when it encounters an object with the DYNAMIC flag
|
||
set. */
|
||
|
||
static boolean
|
||
sunos_add_dynamic_symbols (abfd, info)
|
||
bfd *abfd;
|
||
struct bfd_link_info *info;
|
||
{
|
||
asection *s;
|
||
|
||
/* We do not want to include 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. */
|
||
abfd->sections = NULL;
|
||
|
||
/* The native linker seems to just ignore dynamic objects when -r is
|
||
used. */
|
||
if (info->relocateable)
|
||
return true;
|
||
|
||
/* There's no hope of using a dynamic object which does not exactly
|
||
match the format of the output file. */
|
||
if (info->hash->creator != abfd->xvec)
|
||
{
|
||
bfd_set_error (bfd_error_invalid_operation);
|
||
return false;
|
||
}
|
||
|
||
/* If this is the first dynamic object, create some new sections to
|
||
hold dynamic linking information. We need to put these sections
|
||
somewhere, and the first dynamic object is as good a place as
|
||
any. The linker script will look for these special section names
|
||
and put them in the right place in the output file. See
|
||
include/aout/sun4.h for more details of the dynamic linking
|
||
information. */
|
||
if (sunos_hash_table (info)->dynobj == NULL)
|
||
{
|
||
flagword flags;
|
||
asection *sdyn;
|
||
|
||
sunos_hash_table (info)->dynobj = abfd;
|
||
|
||
flags = SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY;
|
||
|
||
/* The .dynamic section holds the basic dynamic information: the
|
||
sun4_dynamic structure, the dynamic debugger information, and
|
||
the sun4_dynamic_link structure. */
|
||
s = bfd_make_section (abfd, ".dynamic");
|
||
if (s == NULL
|
||
|| ! bfd_set_section_flags (abfd, s, flags)
|
||
|| ! bfd_set_section_alignment (abfd, s, 2))
|
||
return false;
|
||
sdyn = s;
|
||
|
||
/* The .need section holds the list of names of shared objets
|
||
which must be included at runtime. The address of this
|
||
section is put in the ld_need field. */
|
||
s = bfd_make_section (abfd, ".need");
|
||
if (s == NULL
|
||
|| ! bfd_set_section_flags (abfd, s, flags | SEC_READONLY)
|
||
|| ! bfd_set_section_alignment (abfd, s, 2))
|
||
return false;
|
||
|
||
/* The .rules section holds the path to search for shared
|
||
objects. The address of this section is put in the ld_rules
|
||
field. */
|
||
s = bfd_make_section (abfd, ".rules");
|
||
if (s == NULL
|
||
|| ! bfd_set_section_flags (abfd, s, flags | SEC_READONLY)
|
||
|| ! bfd_set_section_alignment (abfd, s, 2))
|
||
return false;
|
||
|
||
/* The .got section holds the global offset table. I don't
|
||
really know how this works, actually. It seems to only be
|
||
used for PIC code. The address minus four is put in the
|
||
ld_got field. */
|
||
s = bfd_make_section (abfd, ".got");
|
||
if (s == NULL
|
||
|| ! bfd_set_section_flags (abfd, s, flags)
|
||
|| ! bfd_set_section_alignment (abfd, s, 2))
|
||
return false;
|
||
s->_raw_size = BYTES_IN_WORD;
|
||
|
||
/* The .plt section holds the procedure linkage table. The
|
||
address is put in the ld_plt field. */
|
||
s = bfd_make_section (abfd, ".plt");
|
||
if (s == NULL
|
||
|| ! bfd_set_section_flags (abfd, s, flags | SEC_CODE)
|
||
|| ! bfd_set_section_alignment (abfd, s, 2))
|
||
return false;
|
||
|
||
/* The .dynrel section holds the dynamic relocs. The address is
|
||
put in the ld_rel field. */
|
||
s = bfd_make_section (abfd, ".dynrel");
|
||
if (s == NULL
|
||
|| ! bfd_set_section_flags (abfd, s, flags | SEC_READONLY)
|
||
|| ! bfd_set_section_alignment (abfd, s, 2))
|
||
return false;
|
||
|
||
/* The .hash section holds the dynamic hash table. The address
|
||
is put in the ld_hash field. */
|
||
s = bfd_make_section (abfd, ".hash");
|
||
if (s == NULL
|
||
|| ! bfd_set_section_flags (abfd, s, flags | SEC_READONLY)
|
||
|| ! bfd_set_section_alignment (abfd, s, 2))
|
||
return false;
|
||
|
||
/* The .dynsym section holds the dynamic symbols. The address
|
||
is put in the ld_stab field. */
|
||
s = bfd_make_section (abfd, ".dynsym");
|
||
if (s == NULL
|
||
|| ! bfd_set_section_flags (abfd, s, flags | SEC_READONLY)
|
||
|| ! bfd_set_section_alignment (abfd, s, 2))
|
||
return false;
|
||
|
||
/* The .dynstr section holds the dynamic symbol string table.
|
||
The address is put in the ld_symbols field. */
|
||
s = bfd_make_section (abfd, ".dynstr");
|
||
if (s == NULL
|
||
|| ! bfd_set_section_flags (abfd, s, flags | SEC_READONLY)
|
||
|| ! bfd_set_section_alignment (abfd, s, 2))
|
||
return false;
|
||
}
|
||
|
||
return true;
|
||
}
|
||
|
||
/* Function to add a single symbol to the linker hash table. This is
|
||
a wrapper around _bfd_generic_link_add_one_symbol which handles the
|
||
tweaking needed for dynamic linking support. */
|
||
|
||
static boolean
|
||
sunos_add_one_symbol (info, abfd, name, flags, section, value, string,
|
||
copy, collect, hashp)
|
||
struct bfd_link_info *info;
|
||
bfd *abfd;
|
||
const char *name;
|
||
flagword flags;
|
||
asection *section;
|
||
bfd_vma value;
|
||
const char *string;
|
||
boolean copy;
|
||
boolean collect;
|
||
struct bfd_link_hash_entry **hashp;
|
||
{
|
||
struct sunos_link_hash_entry *h;
|
||
int new_flag;
|
||
|
||
h = sunos_link_hash_lookup (sunos_hash_table (info), name, true, copy,
|
||
false);
|
||
if (h == NULL)
|
||
return false;
|
||
|
||
if (hashp != NULL)
|
||
*hashp = (struct bfd_link_hash_entry *) h;
|
||
|
||
/* Treat a common symbol in a dynamic object as defined in the .bss
|
||
section of the dynamic object. We don't want to allocate space
|
||
for it in our process image. */
|
||
if ((abfd->flags & DYNAMIC) != 0
|
||
&& section == &bfd_com_section)
|
||
section = obj_bsssec (abfd);
|
||
|
||
if (section != &bfd_und_section
|
||
&& h->root.root.type != bfd_link_hash_new
|
||
&& h->root.root.type != bfd_link_hash_undefined)
|
||
{
|
||
/* We are defining the symbol, and it is already defined. This
|
||
is a potential multiple definition error. */
|
||
if ((abfd->flags & DYNAMIC) != 0)
|
||
{
|
||
/* The definition we are adding is from a dynamic object.
|
||
We do not want this new definition to override the
|
||
existing definition, so we pretend it is just a
|
||
reference. */
|
||
section = &bfd_und_section;
|
||
}
|
||
else if ((h->root.root.type == bfd_link_hash_defined
|
||
&& (h->root.root.u.def.section->owner->flags & DYNAMIC) != 0)
|
||
|| (h->root.root.type == bfd_link_hash_common
|
||
&& ((h->root.root.u.c.section->owner->flags & DYNAMIC)
|
||
!= 0)))
|
||
{
|
||
/* The existing definition is from a dynamic object. We
|
||
want to override it with the definition we just found.
|
||
Clobber the existing definition. */
|
||
h->root.root.type = bfd_link_hash_new;
|
||
}
|
||
}
|
||
|
||
/* Do the usual procedure for adding a symbol. */
|
||
if (! _bfd_generic_link_add_one_symbol (info, abfd, name, flags, section,
|
||
value, string, copy, collect,
|
||
hashp))
|
||
return false;
|
||
|
||
/* 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 ((abfd->flags & DYNAMIC) == 0)
|
||
{
|
||
if (section == &bfd_und_section)
|
||
new_flag = SUNOS_REF_REGULAR;
|
||
else
|
||
new_flag = SUNOS_DEF_REGULAR;
|
||
}
|
||
else
|
||
{
|
||
if (section == &bfd_und_section)
|
||
new_flag = SUNOS_REF_DYNAMIC;
|
||
else
|
||
new_flag = SUNOS_DEF_DYNAMIC;
|
||
}
|
||
h->flags |= new_flag;
|
||
|
||
if (h->dynindx == -1
|
||
&& (h->flags & (SUNOS_DEF_REGULAR | SUNOS_REF_REGULAR)) != 0)
|
||
{
|
||
++sunos_hash_table (info)->dynsymcount;
|
||
h->dynindx = -2;
|
||
}
|
||
|
||
return true;
|
||
}
|
||
|
||
/* Record an assignment made to a symbol by a linker script. We need
|
||
this in case some dynamic object refers to this symbol. */
|
||
|
||
boolean
|
||
bfd_sunos_record_link_assignment (output_bfd, info, name)
|
||
bfd *output_bfd;
|
||
struct bfd_link_info *info;
|
||
const char *name;
|
||
{
|
||
struct sunos_link_hash_entry *h;
|
||
|
||
/* This is called after we have examined all the input objects. If
|
||
the symbol does not exist, it merely means that no object refers
|
||
to it, and we can just ignore it at this point. */
|
||
h = sunos_link_hash_lookup (sunos_hash_table (info), name,
|
||
false, false, false);
|
||
if (h == NULL)
|
||
return true;
|
||
|
||
h->flags |= SUNOS_DEF_REGULAR;
|
||
|
||
if (h->dynindx == -1)
|
||
{
|
||
++sunos_hash_table (info)->dynsymcount;
|
||
h->dynindx = -2;
|
||
}
|
||
|
||
return true;
|
||
}
|
||
|
||
/* Set up the sizes and contents of the dynamic sections created in
|
||
sunos_add_dynamic_symbols. This is called by the SunOS linker
|
||
emulation before_allocation routine. We must set the sizes of the
|
||
sections before the linker sets the addresses of the various
|
||
sections. This unfortunately requires reading all the relocs so
|
||
that we can work out which ones need to become dynamic relocs. If
|
||
info->keep_memory is true, we keep the relocs in memory; otherwise,
|
||
we discard them, and will read them again later. */
|
||
|
||
boolean
|
||
bfd_sunos_size_dynamic_sections (output_bfd, info, sdynptr, sneedptr,
|
||
srulesptr)
|
||
bfd *output_bfd;
|
||
struct bfd_link_info *info;
|
||
asection **sdynptr;
|
||
asection **sneedptr;
|
||
asection **srulesptr;
|
||
{
|
||
bfd *dynobj;
|
||
size_t dynsymcount;
|
||
asection *s;
|
||
size_t bucketcount;
|
||
size_t hashalloc;
|
||
size_t i;
|
||
bfd *sub;
|
||
|
||
*sdynptr = NULL;
|
||
*sneedptr = NULL;
|
||
*srulesptr = NULL;
|
||
|
||
dynobj = sunos_hash_table (info)->dynobj;
|
||
dynsymcount = sunos_hash_table (info)->dynsymcount;
|
||
|
||
/* If there were no dynamic objects in the link, there is nothing to
|
||
do here. */
|
||
if (dynobj == NULL)
|
||
return true;
|
||
|
||
/* The .dynamic section is always the same size. */
|
||
s = bfd_get_section_by_name (dynobj, ".dynamic");
|
||
BFD_ASSERT (s != NULL);
|
||
s->_raw_size = (sizeof (struct external_sun4_dynamic)
|
||
+ EXTERNAL_SUN4_DYNAMIC_DEBUGGER_SIZE
|
||
+ sizeof (struct external_sun4_dynamic_link));
|
||
|
||
/* Set the size of the .dynsym and .hash sections. We counted the
|
||
number of dynamic symbols as we read the input files. We will
|
||
build the dynamic symbol table (.dynsym) and the hash table
|
||
(.hash) when we build the final symbol table, because until then
|
||
we do not know the correct value to give the symbols. We build
|
||
the dynamic symbol string table (.dynstr) in a traversal of the
|
||
symbol table using sunos_scan_dynamic_symbol. */
|
||
s = bfd_get_section_by_name (dynobj, ".dynsym");
|
||
BFD_ASSERT (s != NULL);
|
||
s->_raw_size = dynsymcount * sizeof (struct external_nlist);
|
||
s->contents = (bfd_byte *) bfd_alloc (output_bfd, s->_raw_size);
|
||
if (s->contents == NULL && s->_raw_size != 0)
|
||
{
|
||
bfd_set_error (bfd_error_no_memory);
|
||
return false;
|
||
}
|
||
|
||
/* The number of buckets is just the number of symbols divided by
|
||
four. The compute the final size of the hash table, we must
|
||
actually compute the hash table. Normally we need exactly as
|
||
many entries in the hash table as there are dynamic symbols, but
|
||
if some of the buckets are not used we will need additional
|
||
entries. In the worse case, every symbol will hash to the same
|
||
bucket, and we will need BUCKETCOUNT - 1 extra entries. */
|
||
if (dynsymcount >= 4)
|
||
bucketcount = dynsymcount / 4;
|
||
else if (dynsymcount > 0)
|
||
bucketcount = dynsymcount;
|
||
else
|
||
bucketcount = 1;
|
||
s = bfd_get_section_by_name (dynobj, ".hash");
|
||
BFD_ASSERT (s != NULL);
|
||
hashalloc = (dynsymcount + bucketcount - 1) * HASH_ENTRY_SIZE;
|
||
s->contents = (bfd_byte *) bfd_alloc (dynobj, hashalloc);
|
||
if (s->contents == NULL && dynsymcount > 0)
|
||
{
|
||
bfd_set_error (bfd_error_no_memory);
|
||
return false;
|
||
}
|
||
memset (s->contents, 0, hashalloc);
|
||
for (i = 0; i < bucketcount; i++)
|
||
PUT_WORD (output_bfd, (bfd_vma) -1, s->contents + i * HASH_ENTRY_SIZE);
|
||
s->_raw_size = bucketcount * HASH_ENTRY_SIZE;
|
||
|
||
sunos_hash_table (info)->bucketcount = bucketcount;
|
||
|
||
/* Look through all the input BFD's and read their relocs. It would
|
||
be better if we didn't have to do this, but there is no other way
|
||
to determine the number of dynamic relocs we need, and, more
|
||
importantly, there is no other way to know which symbols should
|
||
get an entry in the procedure linkage table. */
|
||
for (sub = info->input_bfds; sub != NULL; sub = sub->link_next)
|
||
{
|
||
if ((sub->flags & DYNAMIC) == 0)
|
||
{
|
||
if (! sunos_scan_relocs (info, sub, obj_textsec (sub),
|
||
exec_hdr (sub)->a_trsize)
|
||
|| ! sunos_scan_relocs (info, sub, obj_datasec (sub),
|
||
exec_hdr (sub)->a_drsize))
|
||
return false;
|
||
}
|
||
}
|
||
|
||
/* Scan all the symbols, place them in the dynamic symbol table, and
|
||
build the dynamic hash table. We reuse dynsymcount as a counter
|
||
for the number of symbols we have added so far. */
|
||
sunos_hash_table (info)->dynsymcount = 0;
|
||
sunos_link_hash_traverse (sunos_hash_table (info),
|
||
sunos_scan_dynamic_symbol,
|
||
(PTR) info);
|
||
BFD_ASSERT (sunos_hash_table (info)->dynsymcount == dynsymcount);
|
||
|
||
/* The SunOS native linker seems to align the total size of the
|
||
symbol strings to a multiple of 8. I don't know if this is
|
||
important, but it can't hurt much. */
|
||
s = bfd_get_section_by_name (dynobj, ".dynstr");
|
||
BFD_ASSERT (s != NULL);
|
||
if ((s->_raw_size & 7) != 0)
|
||
{
|
||
bfd_size_type add;
|
||
bfd_byte *contents;
|
||
|
||
add = 8 - (s->_raw_size & 7);
|
||
contents = (bfd_byte *) realloc (s->contents, s->_raw_size + add);
|
||
if (contents == NULL)
|
||
{
|
||
bfd_set_error (bfd_error_no_memory);
|
||
return false;
|
||
}
|
||
memset (contents + s->_raw_size, 0, add);
|
||
s->contents = contents;
|
||
s->_raw_size += add;
|
||
}
|
||
|
||
/* Now that we have worked out the sizes of the procedure linkage
|
||
table and the dynamic relocs, allocate storage for them. */
|
||
s = bfd_get_section_by_name (dynobj, ".plt");
|
||
BFD_ASSERT (s != NULL);
|
||
if (s->_raw_size != 0)
|
||
{
|
||
s->contents = (bfd_byte *) bfd_alloc (dynobj, s->_raw_size);
|
||
if (s->contents == NULL)
|
||
{
|
||
bfd_set_error (bfd_error_no_memory);
|
||
return false;
|
||
}
|
||
|
||
/* Fill in the first entry in the table. */
|
||
switch (bfd_get_arch (dynobj))
|
||
{
|
||
case bfd_arch_sparc:
|
||
memcpy (s->contents, sparc_plt_first_entry, SPARC_PLT_ENTRY_SIZE);
|
||
break;
|
||
|
||
case bfd_arch_m68k:
|
||
memcpy (s->contents, m68k_plt_first_entry, M68K_PLT_ENTRY_SIZE);
|
||
break;
|
||
|
||
default:
|
||
abort ();
|
||
}
|
||
}
|
||
|
||
s = bfd_get_section_by_name (dynobj, ".dynrel");
|
||
if (s->_raw_size != 0)
|
||
{
|
||
s->contents = (bfd_byte *) bfd_alloc (dynobj, s->_raw_size);
|
||
if (s->contents == NULL)
|
||
{
|
||
bfd_set_error (bfd_error_no_memory);
|
||
return false;
|
||
}
|
||
}
|
||
/* We use the reloc_count field to keep track of how many of the
|
||
relocs we have output so far. */
|
||
s->reloc_count = 0;
|
||
|
||
/* Make space for the global offset table. */
|
||
s = bfd_get_section_by_name (dynobj, ".got");
|
||
s->contents = (bfd_byte *) bfd_alloc (dynobj, s->_raw_size);
|
||
if (s->contents == NULL)
|
||
{
|
||
bfd_set_error (bfd_error_no_memory);
|
||
return false;
|
||
}
|
||
|
||
*sdynptr = bfd_get_section_by_name (dynobj, ".dynamic");
|
||
*sneedptr = bfd_get_section_by_name (dynobj, ".need");
|
||
*srulesptr = bfd_get_section_by_name (dynobj, ".rules");
|
||
|
||
return true;
|
||
}
|
||
|
||
/* Scan the relocs for an input section. */
|
||
|
||
static boolean
|
||
sunos_scan_relocs (info, abfd, sec, rel_size)
|
||
struct bfd_link_info *info;
|
||
bfd *abfd;
|
||
asection *sec;
|
||
bfd_size_type rel_size;
|
||
{
|
||
PTR relocs;
|
||
PTR free_relocs = NULL;
|
||
|
||
if (rel_size == 0)
|
||
return true;
|
||
|
||
if (! info->keep_memory)
|
||
relocs = free_relocs = malloc (rel_size);
|
||
else
|
||
{
|
||
aout_section_data (sec) =
|
||
((struct aout_section_data_struct *)
|
||
bfd_alloc (abfd, sizeof (struct aout_section_data_struct)));
|
||
if (aout_section_data (sec) == NULL)
|
||
relocs = NULL;
|
||
else
|
||
relocs = aout_section_data (sec)->relocs = malloc (rel_size);
|
||
}
|
||
if (relocs == NULL)
|
||
{
|
||
bfd_set_error (bfd_error_no_memory);
|
||
return false;
|
||
}
|
||
|
||
if (bfd_seek (abfd, sec->rel_filepos, SEEK_SET) != 0
|
||
|| bfd_read (relocs, 1, rel_size, abfd) != rel_size)
|
||
goto error_return;
|
||
|
||
if (obj_reloc_entry_size (abfd) == RELOC_STD_SIZE)
|
||
{
|
||
if (! sunos_scan_std_relocs (info, abfd, sec,
|
||
(struct reloc_std_external *) relocs,
|
||
rel_size))
|
||
goto error_return;
|
||
}
|
||
else
|
||
{
|
||
if (! sunos_scan_ext_relocs (info, abfd, sec,
|
||
(struct reloc_ext_external *) relocs,
|
||
rel_size))
|
||
goto error_return;
|
||
}
|
||
|
||
if (free_relocs != NULL)
|
||
free (free_relocs);
|
||
|
||
return true;
|
||
|
||
error_return:
|
||
if (free_relocs != NULL)
|
||
free (free_relocs);
|
||
return false;
|
||
}
|
||
|
||
/* Scan the relocs for an input section using standard relocs. We
|
||
need to figure out what to do for each reloc against a dynamic
|
||
symbol. If the symbol is in the .text section, an entry is made in
|
||
the procedure linkage table. Note that this will do the wrong
|
||
thing if the symbol is actually data; I don't think the Sun 3
|
||
native linker handles this case correctly either. If the symbol is
|
||
not in the .text section, we must preserve the reloc as a dynamic
|
||
reloc. FIXME: We should also handle the PIC relocs here by
|
||
building global offset table entries. */
|
||
|
||
static boolean
|
||
sunos_scan_std_relocs (info, abfd, sec, relocs, rel_size)
|
||
struct bfd_link_info *info;
|
||
bfd *abfd;
|
||
asection *sec;
|
||
const struct reloc_std_external *relocs;
|
||
bfd_size_type rel_size;
|
||
{
|
||
bfd *dynobj;
|
||
asection *splt;
|
||
asection *srel;
|
||
struct sunos_link_hash_entry **sym_hashes;
|
||
const struct reloc_std_external *rel, *relend;
|
||
|
||
/* We only know how to handle m68k plt entries. */
|
||
if (bfd_get_arch (abfd) != bfd_arch_m68k)
|
||
{
|
||
bfd_set_error (bfd_error_invalid_target);
|
||
return false;
|
||
}
|
||
|
||
dynobj = sunos_hash_table (info)->dynobj;
|
||
splt = bfd_get_section_by_name (dynobj, ".plt");
|
||
srel = bfd_get_section_by_name (dynobj, ".dynrel");
|
||
BFD_ASSERT (splt != NULL && srel != NULL);
|
||
sym_hashes = (struct sunos_link_hash_entry **) obj_aout_sym_hashes (abfd);
|
||
|
||
relend = relocs + rel_size / RELOC_STD_SIZE;
|
||
for (rel = relocs; rel < relend; rel++)
|
||
{
|
||
int r_index;
|
||
struct sunos_link_hash_entry *h;
|
||
|
||
/* We only want relocs against external symbols. */
|
||
if (abfd->xvec->header_byteorder_big_p)
|
||
{
|
||
if ((rel->r_type[0] & RELOC_STD_BITS_EXTERN_BIG) == 0)
|
||
continue;
|
||
}
|
||
else
|
||
{
|
||
if ((rel->r_type[0] & RELOC_STD_BITS_EXTERN_LITTLE) == 0)
|
||
continue;
|
||
}
|
||
|
||
/* Get the symbol index. */
|
||
if (abfd->xvec->header_byteorder_big_p)
|
||
{
|
||
r_index = ((rel->r_index[0] << 16)
|
||
| (rel->r_index[1] << 8)
|
||
| rel->r_index[2]);
|
||
}
|
||
else
|
||
{
|
||
r_index = ((rel->r_index[2] << 16)
|
||
| (rel->r_index[1] << 8)
|
||
| rel->r_index[0]);
|
||
}
|
||
|
||
/* Get the hash table entry. */
|
||
h = sym_hashes[r_index];
|
||
if (h == NULL)
|
||
{
|
||
/* This should not normally happen, but it will in any case
|
||
be caught in the relocation phase. */
|
||
continue;
|
||
}
|
||
|
||
/* At this point common symbols have already been allocated, so
|
||
we don't have to worry about them. We need to consider that
|
||
we may have already seen this symbol and marked it undefined;
|
||
if the symbols is really undefined, then SUNOS_DEF_DYNAMIC
|
||
will be zero. */
|
||
if (h->root.root.type != bfd_link_hash_defined
|
||
&& h->root.root.type != bfd_link_hash_undefined)
|
||
continue;
|
||
|
||
if ((h->flags & SUNOS_DEF_DYNAMIC) == 0
|
||
|| (h->flags & SUNOS_DEF_REGULAR) != 0)
|
||
continue;
|
||
|
||
BFD_ASSERT ((h->flags & SUNOS_REF_REGULAR) != 0);
|
||
BFD_ASSERT (h->root.root.type == bfd_link_hash_defined
|
||
? (h->root.root.u.def.section->owner->flags & DYNAMIC) != 0
|
||
: (h->root.root.u.undef.abfd->flags & DYNAMIC) != 0);
|
||
|
||
/* This reloc is against a symbol defined only by a dynamic
|
||
object. */
|
||
|
||
if (h->root.root.type == bfd_link_hash_undefined)
|
||
{
|
||
/* Presumably this symbol was marked as being undefined by
|
||
an earlier reloc. */
|
||
srel->_raw_size += RELOC_STD_SIZE;
|
||
}
|
||
else if ((h->root.root.u.def.section->flags & SEC_CODE) == 0)
|
||
{
|
||
bfd *sub;
|
||
|
||
/* This reloc is not in the .text section. It must be
|
||
copied into the dynamic relocs. We mark the symbol as
|
||
being undefined. */
|
||
srel->_raw_size += RELOC_STD_SIZE;
|
||
sub = h->root.root.u.def.section->owner;
|
||
h->root.root.type = bfd_link_hash_undefined;
|
||
h->root.root.u.undef.abfd = sub;
|
||
}
|
||
else
|
||
{
|
||
/* This symbol is in the .text section. We must give it an
|
||
entry in the procedure linkage table, if we have not
|
||
already done so. We change the definition of the symbol
|
||
to the .plt section; this will cause relocs against it to
|
||
be handled correctly. */
|
||
if (h->root.root.u.def.section != splt)
|
||
{
|
||
if (splt->_raw_size == 0)
|
||
splt->_raw_size = M68K_PLT_ENTRY_SIZE;
|
||
h->root.root.u.def.section = splt;
|
||
h->root.root.u.def.value = splt->_raw_size;
|
||
splt->_raw_size += M68K_PLT_ENTRY_SIZE;
|
||
|
||
/* We will also need a dynamic reloc entry. */
|
||
srel->_raw_size += RELOC_STD_SIZE;
|
||
}
|
||
}
|
||
}
|
||
|
||
return true;
|
||
}
|
||
|
||
/* Scan the relocs for an input section using extended relocs. We
|
||
need to figure out what to do for each reloc against a dynamic
|
||
symbol. If the reloc is a WDISP30, and the symbol is in the .text
|
||
section, an entry is made in the procedure linkage table.
|
||
Otherwise, we must preserve the reloc as a dynamic reloc. FIXME:
|
||
We should also handle the PIC relocs here by building global offset
|
||
table entries. */
|
||
|
||
static boolean
|
||
sunos_scan_ext_relocs (info, abfd, sec, relocs, rel_size)
|
||
struct bfd_link_info *info;
|
||
bfd *abfd;
|
||
asection *sec;
|
||
const struct reloc_ext_external *relocs;
|
||
bfd_size_type rel_size;
|
||
{
|
||
bfd *dynobj;
|
||
asection *splt;
|
||
asection *srel;
|
||
struct sunos_link_hash_entry **sym_hashes;
|
||
const struct reloc_ext_external *rel, *relend;
|
||
|
||
/* We only know how to handle SPARC plt entries. */
|
||
if (bfd_get_arch (abfd) != bfd_arch_sparc)
|
||
{
|
||
bfd_set_error (bfd_error_invalid_target);
|
||
return false;
|
||
}
|
||
|
||
dynobj = sunos_hash_table (info)->dynobj;
|
||
splt = bfd_get_section_by_name (dynobj, ".plt");
|
||
srel = bfd_get_section_by_name (dynobj, ".dynrel");
|
||
BFD_ASSERT (splt != NULL && srel != NULL);
|
||
sym_hashes = (struct sunos_link_hash_entry **) obj_aout_sym_hashes (abfd);
|
||
|
||
relend = relocs + rel_size / RELOC_EXT_SIZE;
|
||
for (rel = relocs; rel < relend; rel++)
|
||
{
|
||
int r_index;
|
||
int r_type;
|
||
struct sunos_link_hash_entry *h;
|
||
|
||
/* We only want relocs against external symbols. */
|
||
if (abfd->xvec->header_byteorder_big_p)
|
||
{
|
||
if ((rel->r_type[0] & RELOC_EXT_BITS_EXTERN_BIG) == 0)
|
||
continue;
|
||
}
|
||
else
|
||
{
|
||
if ((rel->r_type[0] & RELOC_EXT_BITS_EXTERN_LITTLE) == 0)
|
||
continue;
|
||
}
|
||
|
||
/* Get the symbol index and reloc type. */
|
||
if (abfd->xvec->header_byteorder_big_p)
|
||
{
|
||
r_index = ((rel->r_index[0] << 16)
|
||
| (rel->r_index[1] << 8)
|
||
| rel->r_index[2]);
|
||
r_type = ((rel->r_type[0] & RELOC_EXT_BITS_TYPE_BIG)
|
||
>> RELOC_EXT_BITS_TYPE_SH_BIG);
|
||
}
|
||
else
|
||
{
|
||
r_index = ((rel->r_index[2] << 16)
|
||
| (rel->r_index[1] << 8)
|
||
| rel->r_index[0]);
|
||
r_type = ((rel->r_type[0] & RELOC_EXT_BITS_TYPE_LITTLE)
|
||
>> RELOC_EXT_BITS_TYPE_SH_LITTLE);
|
||
}
|
||
|
||
/* Get the hash table entry. */
|
||
h = sym_hashes[r_index];
|
||
if (h == NULL)
|
||
{
|
||
/* This should not normally happen, but it will in any case
|
||
be caught in the relocation phase. */
|
||
continue;
|
||
}
|
||
|
||
/* At this point common symbols have already been allocated, so
|
||
we don't have to worry about them. We need to consider that
|
||
we may have already seen this symbol and marked it undefined;
|
||
if the symbols is really undefined, then SUNOS_DEF_DYNAMIC
|
||
will be zero. */
|
||
if (h->root.root.type != bfd_link_hash_defined
|
||
&& h->root.root.type != bfd_link_hash_undefined)
|
||
continue;
|
||
|
||
if ((h->flags & SUNOS_DEF_DYNAMIC) == 0
|
||
|| (h->flags & SUNOS_DEF_REGULAR) != 0)
|
||
continue;
|
||
|
||
BFD_ASSERT ((h->flags & SUNOS_REF_REGULAR) != 0);
|
||
BFD_ASSERT (h->root.root.type == bfd_link_hash_defined
|
||
? (h->root.root.u.def.section->owner->flags & DYNAMIC) != 0
|
||
: (h->root.root.u.undef.abfd->flags & DYNAMIC) != 0);
|
||
|
||
/* This reloc is against a symbol defined only by a dynamic
|
||
object. */
|
||
|
||
if (h->root.root.type == bfd_link_hash_undefined)
|
||
{
|
||
/* Presumably this symbol was marked as being undefined by
|
||
an earlier reloc. */
|
||
srel->_raw_size += RELOC_EXT_SIZE;
|
||
}
|
||
else if ((h->root.root.u.def.section->flags & SEC_CODE) == 0)
|
||
{
|
||
bfd *sub;
|
||
|
||
/* This reloc is not in the .text section. It must be
|
||
copied into the dynamic relocs. We mark the symbol as
|
||
being undefined. */
|
||
srel->_raw_size += RELOC_EXT_SIZE;
|
||
sub = h->root.root.u.def.section->owner;
|
||
h->root.root.type = bfd_link_hash_undefined;
|
||
h->root.root.u.undef.abfd = sub;
|
||
}
|
||
else
|
||
{
|
||
/* This symbol is in the .text section. We must give it an
|
||
entry in the procedure linkage table, if we have not
|
||
already done so. We change the definition of the symbol
|
||
to the .plt section; this will cause relocs against it to
|
||
be handled correctly. */
|
||
if (h->root.root.u.def.section != splt)
|
||
{
|
||
if (splt->_raw_size == 0)
|
||
splt->_raw_size = SPARC_PLT_ENTRY_SIZE;
|
||
h->root.root.u.def.section = splt;
|
||
h->root.root.u.def.value = splt->_raw_size;
|
||
splt->_raw_size += SPARC_PLT_ENTRY_SIZE;
|
||
|
||
/* We will also need a dynamic reloc entry. */
|
||
srel->_raw_size += RELOC_EXT_SIZE;
|
||
}
|
||
}
|
||
}
|
||
|
||
return true;
|
||
}
|
||
|
||
/* Build the hash table of dynamic symbols, and to mark as written all
|
||
symbols from dynamic objects which we do not plan to write out. */
|
||
|
||
static boolean
|
||
sunos_scan_dynamic_symbol (h, data)
|
||
struct sunos_link_hash_entry *h;
|
||
PTR data;
|
||
{
|
||
struct bfd_link_info *info = (struct bfd_link_info *) data;
|
||
|
||
/* Set the written flag for symbols we do not want to write out as
|
||
part of the regular symbol table. This is all symbols which are
|
||
not defined in a regular object file. For some reason symbols
|
||
which are referenced by a regular object and defined by a dynamic
|
||
object do not seem to show up in the regular symbol table. */
|
||
if ((h->flags & SUNOS_DEF_REGULAR) == 0)
|
||
h->root.written = true;
|
||
|
||
/* If this symbol is defined by a dynamic object and referenced by a
|
||
regular object, see whether we gave it a reasonable value while
|
||
scanning the relocs. */
|
||
|
||
if ((h->flags & SUNOS_DEF_REGULAR) == 0
|
||
&& (h->flags & SUNOS_DEF_DYNAMIC) != 0
|
||
&& (h->flags & SUNOS_REF_REGULAR) != 0)
|
||
{
|
||
if (h->root.root.type == bfd_link_hash_defined
|
||
&& ((h->root.root.u.def.section->owner->flags & DYNAMIC) != 0)
|
||
&& h->root.root.u.def.section->output_section == NULL)
|
||
{
|
||
bfd *sub;
|
||
|
||
/* This symbol is currently defined in a dynamic section
|
||
which is not being put into the output file. This
|
||
implies that there is no reloc against the symbol. I'm
|
||
not sure why this case would ever occur. In any case, we
|
||
change the symbol to be undefined. */
|
||
sub = h->root.root.u.def.section->owner;
|
||
h->root.root.type = bfd_link_hash_undefined;
|
||
h->root.root.u.undef.abfd = sub;
|
||
}
|
||
}
|
||
|
||
/* If this symbol is defined or referenced by a regular file, add it
|
||
to the dynamic symbols. */
|
||
if ((h->flags & (SUNOS_DEF_REGULAR | SUNOS_REF_REGULAR)) != 0)
|
||
{
|
||
asection *s;
|
||
size_t len;
|
||
bfd_byte *contents;
|
||
unsigned char *name;
|
||
unsigned long hash;
|
||
bfd *dynobj;
|
||
|
||
BFD_ASSERT (h->dynindx == -2);
|
||
|
||
h->dynindx = sunos_hash_table (info)->dynsymcount;
|
||
++sunos_hash_table (info)->dynsymcount;
|
||
|
||
len = strlen (h->root.root.root.string);
|
||
|
||
/* We don't bother to construct a BFD hash table for the strings
|
||
which are the names of the dynamic symbols. Using a hash
|
||
table for the regular symbols is beneficial, because the
|
||
regular symbols includes the debugging symbols, which have
|
||
long names and are often duplicated in several object files.
|
||
There are no debugging symbols in the dynamic symbols. */
|
||
s = bfd_get_section_by_name (sunos_hash_table (info)->dynobj,
|
||
".dynstr");
|
||
BFD_ASSERT (s != NULL);
|
||
if (s->contents == NULL)
|
||
contents = (bfd_byte *) malloc (len + 1);
|
||
else
|
||
contents = (bfd_byte *) realloc (s->contents, s->_raw_size + len + 1);
|
||
if (contents == NULL)
|
||
{
|
||
bfd_set_error (bfd_error_no_memory);
|
||
return false;
|
||
}
|
||
s->contents = contents;
|
||
|
||
h->dynstr_index = s->_raw_size;
|
||
strcpy (contents + s->_raw_size, h->root.root.root.string);
|
||
s->_raw_size += len + 1;
|
||
|
||
/* Add it to the dynamic hash table. */
|
||
name = (unsigned char *) h->root.root.root.string;
|
||
hash = 0;
|
||
while (*name != '\0')
|
||
hash = (hash << 1) + *name++;
|
||
hash &= 0x7fffffff;
|
||
hash %= sunos_hash_table (info)->bucketcount;
|
||
|
||
dynobj = sunos_hash_table (info)->dynobj;
|
||
s = bfd_get_section_by_name (dynobj, ".hash");
|
||
BFD_ASSERT (s != NULL);
|
||
|
||
if (GET_SWORD (dynobj, s->contents + hash * HASH_ENTRY_SIZE) == -1)
|
||
PUT_WORD (dynobj, h->dynindx, s->contents + hash * HASH_ENTRY_SIZE);
|
||
else
|
||
{
|
||
bfd_vma next;
|
||
|
||
next = GET_WORD (dynobj,
|
||
(s->contents
|
||
+ hash * HASH_ENTRY_SIZE
|
||
+ BYTES_IN_WORD));
|
||
PUT_WORD (dynobj, s->_raw_size / HASH_ENTRY_SIZE,
|
||
s->contents + hash * HASH_ENTRY_SIZE + BYTES_IN_WORD);
|
||
PUT_WORD (dynobj, h->dynindx, s->contents + s->_raw_size);
|
||
PUT_WORD (dynobj, next, s->contents + s->_raw_size + BYTES_IN_WORD);
|
||
s->_raw_size += HASH_ENTRY_SIZE;
|
||
}
|
||
}
|
||
|
||
return true;
|
||
}
|
||
|
||
/* Link a dynamic object. We actually don't have anything to do at
|
||
this point. This entry point exists to prevent the regular linker
|
||
code from doing anything with the object. */
|
||
|
||
/*ARGSUSED*/
|
||
static boolean
|
||
sunos_link_dynamic_object (info, abfd)
|
||
struct bfd_link_info *info;
|
||
bfd *abfd;
|
||
{
|
||
return true;
|
||
}
|
||
|
||
|
||
/* Write out a dynamic symbol. This is called by the final traversal
|
||
over the symbol table. */
|
||
|
||
static boolean
|
||
sunos_write_dynamic_symbol (output_bfd, info, harg)
|
||
bfd *output_bfd;
|
||
struct bfd_link_info *info;
|
||
struct aout_link_hash_entry *harg;
|
||
{
|
||
struct sunos_link_hash_entry *h = (struct sunos_link_hash_entry *) harg;
|
||
boolean plt;
|
||
int type;
|
||
bfd_vma val;
|
||
asection *s;
|
||
struct external_nlist *outsym;
|
||
|
||
if (h->dynindx < 0)
|
||
return true;
|
||
|
||
plt = false;
|
||
switch (h->root.root.type)
|
||
{
|
||
default:
|
||
case bfd_link_hash_new:
|
||
abort ();
|
||
/* Avoid variable not initialized warnings. */
|
||
return true;
|
||
case bfd_link_hash_undefined:
|
||
type = N_UNDF | N_EXT;
|
||
val = 0;
|
||
break;
|
||
case bfd_link_hash_defined:
|
||
{
|
||
asection *sec;
|
||
asection *output_section;
|
||
|
||
sec = h->root.root.u.def.section;
|
||
output_section = sec->output_section;
|
||
BFD_ASSERT (output_section == &bfd_abs_section
|
||
|| output_section->owner == output_bfd);
|
||
if (strcmp (sec->name, ".plt") == 0)
|
||
{
|
||
plt = true;
|
||
type = N_UNDF | N_EXT;
|
||
val = 0;
|
||
}
|
||
else
|
||
{
|
||
if (output_section == obj_textsec (output_bfd))
|
||
type = N_TEXT | N_EXT;
|
||
else if (output_section == obj_datasec (output_bfd))
|
||
type = N_DATA | N_EXT;
|
||
else if (output_section == obj_bsssec (output_bfd))
|
||
type = N_BSS | N_EXT;
|
||
else
|
||
type = N_ABS | N_EXT;
|
||
val = (h->root.root.u.def.value
|
||
+ output_section->vma
|
||
+ sec->output_offset);
|
||
}
|
||
}
|
||
break;
|
||
case bfd_link_hash_common:
|
||
type = N_UNDF | N_EXT;
|
||
val = h->root.root.u.c.size;
|
||
break;
|
||
case bfd_link_hash_weak:
|
||
type = N_WEAKU;
|
||
val = 0;
|
||
break;
|
||
case bfd_link_hash_indirect:
|
||
case bfd_link_hash_warning:
|
||
/* FIXME: Ignore these for now. The circumstances under which
|
||
they should be written out are not clear to me. */
|
||
return true;
|
||
}
|
||
|
||
s = bfd_get_section_by_name (sunos_hash_table (info)->dynobj, ".dynsym");
|
||
BFD_ASSERT (s != NULL);
|
||
outsym = ((struct external_nlist *)
|
||
(s->contents + h->dynindx * EXTERNAL_NLIST_SIZE));
|
||
|
||
bfd_h_put_8 (output_bfd, type, outsym->e_type);
|
||
bfd_h_put_8 (output_bfd, 0, outsym->e_other);
|
||
|
||
/* FIXME: The native linker doesn't use 0 for desc. It seems to use
|
||
one less than the desc value in the shared library, although that
|
||
seems unlikely. */
|
||
bfd_h_put_16 (output_bfd, 0, outsym->e_desc);
|
||
|
||
PUT_WORD (output_bfd, h->dynstr_index, outsym->e_strx);
|
||
PUT_WORD (output_bfd, val, outsym->e_value);
|
||
|
||
/* If this symbol is in the procedure linkage table, fill in the
|
||
table entry. */
|
||
if (plt)
|
||
{
|
||
bfd_byte *p;
|
||
asection *s;
|
||
bfd_vma r_address;
|
||
|
||
p = h->root.root.u.def.section->contents + h->root.root.u.def.value;
|
||
|
||
s = bfd_get_section_by_name (sunos_hash_table (info)->dynobj, ".dynrel");
|
||
BFD_ASSERT (s != NULL);
|
||
|
||
r_address = (h->root.root.u.def.section->output_section->vma
|
||
+ h->root.root.u.def.section->output_offset
|
||
+ h->root.root.u.def.value);
|
||
|
||
switch (bfd_get_arch (output_bfd))
|
||
{
|
||
case bfd_arch_sparc:
|
||
bfd_put_32 (output_bfd, SPARC_PLT_ENTRY_WORD0, p);
|
||
bfd_put_32 (output_bfd,
|
||
(SPARC_PLT_ENTRY_WORD1
|
||
+ (((- (h->root.root.u.def.value + 4) >> 2)
|
||
& 0x3fffffff))),
|
||
p + 4);
|
||
bfd_put_32 (output_bfd, SPARC_PLT_ENTRY_WORD2 + s->reloc_count,
|
||
p + 8);
|
||
break;
|
||
|
||
case bfd_arch_m68k:
|
||
bfd_put_16 (output_bfd, M68K_PLT_ENTRY_WORD0, p);
|
||
bfd_put_32 (output_bfd, (- (h->root.root.u.def.value + 2)), p + 2);
|
||
bfd_put_16 (output_bfd, s->reloc_count, p + 6);
|
||
r_address += 2;
|
||
break;
|
||
|
||
default:
|
||
abort ();
|
||
}
|
||
|
||
/* We also need to add a jump table reloc. */
|
||
p = s->contents + s->reloc_count * obj_reloc_entry_size (output_bfd);
|
||
if (obj_reloc_entry_size (output_bfd) == RELOC_STD_SIZE)
|
||
{
|
||
struct reloc_std_external *srel;
|
||
|
||
srel = (struct reloc_std_external *) p;
|
||
PUT_WORD (output_bfd, r_address, srel->r_address);
|
||
if (output_bfd->xvec->header_byteorder_big_p)
|
||
{
|
||
srel->r_index[0] = h->dynindx >> 16;
|
||
srel->r_index[1] = h->dynindx >> 8;
|
||
srel->r_index[2] = h->dynindx;
|
||
srel->r_type[0] = (RELOC_STD_BITS_EXTERN_BIG
|
||
| RELOC_STD_BITS_JMPTABLE_BIG);
|
||
}
|
||
else
|
||
{
|
||
srel->r_index[2] = h->dynindx >> 16;
|
||
srel->r_index[1] = h->dynindx >> 8;
|
||
srel->r_index[0] = h->dynindx;
|
||
srel->r_type[0] = (RELOC_STD_BITS_EXTERN_LITTLE
|
||
| RELOC_STD_BITS_JMPTABLE_LITTLE);
|
||
}
|
||
}
|
||
else
|
||
{
|
||
struct reloc_ext_external *erel;
|
||
|
||
erel = (struct reloc_ext_external *) p;
|
||
PUT_WORD (output_bfd, r_address, erel->r_address);
|
||
if (output_bfd->xvec->header_byteorder_big_p)
|
||
{
|
||
erel->r_index[0] = h->dynindx >> 16;
|
||
erel->r_index[1] = h->dynindx >> 8;
|
||
erel->r_index[2] = h->dynindx;
|
||
erel->r_type[0] = (RELOC_EXT_BITS_EXTERN_BIG
|
||
| (22 << RELOC_EXT_BITS_TYPE_SH_BIG));
|
||
}
|
||
else
|
||
{
|
||
erel->r_index[2] = h->dynindx >> 16;
|
||
erel->r_index[1] = h->dynindx >> 8;
|
||
erel->r_index[0] = h->dynindx;
|
||
erel->r_type[0] = (RELOC_EXT_BITS_EXTERN_LITTLE
|
||
| (22 << RELOC_EXT_BITS_TYPE_SH_LITTLE));
|
||
}
|
||
PUT_WORD (output_bfd, (bfd_vma) 0, erel->r_addend);
|
||
}
|
||
|
||
++s->reloc_count;
|
||
}
|
||
|
||
return true;
|
||
}
|
||
|
||
/* This is called for each reloc against an external symbol. If this
|
||
is a reloc which are are going to copy as a dynamic reloc, then
|
||
copy it over, and tell the caller to not bother processing this
|
||
reloc. */
|
||
|
||
/*ARGSUSED*/
|
||
static boolean
|
||
sunos_check_dynamic_reloc (info, input_bfd, input_section, harg, reloc, skip)
|
||
struct bfd_link_info *info;
|
||
bfd *input_bfd;
|
||
asection *input_section;
|
||
struct aout_link_hash_entry *harg;
|
||
PTR reloc;
|
||
boolean *skip;
|
||
{
|
||
struct sunos_link_hash_entry *h = (struct sunos_link_hash_entry *) harg;
|
||
bfd *dynobj;
|
||
asection *srel;
|
||
bfd_byte *p;
|
||
|
||
*skip = false;
|
||
|
||
dynobj = sunos_hash_table (info)->dynobj;
|
||
|
||
if (dynobj == NULL
|
||
|| h->dynindx == -1
|
||
|| h->root.root.type != bfd_link_hash_undefined
|
||
|| (h->flags & SUNOS_DEF_REGULAR) != 0
|
||
|| (h->flags & SUNOS_DEF_DYNAMIC) == 0
|
||
|| (h->root.root.u.undef.abfd->flags & DYNAMIC) == 0)
|
||
return true;
|
||
|
||
/* It looks this is a reloc we are supposed to copy. */
|
||
|
||
srel = bfd_get_section_by_name (dynobj, ".dynrel");
|
||
BFD_ASSERT (srel != NULL);
|
||
|
||
p = srel->contents + srel->reloc_count * obj_reloc_entry_size (dynobj);
|
||
|
||
/* Copy the reloc over. */
|
||
memcpy (p, reloc, obj_reloc_entry_size (dynobj));
|
||
|
||
/* Adjust the address and symbol index. */
|
||
if (obj_reloc_entry_size (dynobj) == RELOC_STD_SIZE)
|
||
{
|
||
struct reloc_std_external *srel;
|
||
|
||
srel = (struct reloc_std_external *) p;
|
||
PUT_WORD (dynobj,
|
||
(GET_WORD (dynobj, srel->r_address)
|
||
+ input_section->output_section->vma
|
||
+ input_section->output_offset),
|
||
srel->r_address);
|
||
if (dynobj->xvec->header_byteorder_big_p)
|
||
{
|
||
srel->r_index[0] = h->dynindx >> 16;
|
||
srel->r_index[1] = h->dynindx >> 8;
|
||
srel->r_index[2] = h->dynindx;
|
||
}
|
||
else
|
||
{
|
||
srel->r_index[2] = h->dynindx >> 16;
|
||
srel->r_index[1] = h->dynindx >> 8;
|
||
srel->r_index[0] = h->dynindx;
|
||
}
|
||
}
|
||
else
|
||
{
|
||
struct reloc_ext_external *erel;
|
||
|
||
erel = (struct reloc_ext_external *) p;
|
||
PUT_WORD (dynobj,
|
||
(GET_WORD (dynobj, erel->r_address)
|
||
+ input_section->output_section->vma
|
||
+ input_section->output_offset),
|
||
erel->r_address);
|
||
if (dynobj->xvec->header_byteorder_big_p)
|
||
{
|
||
erel->r_index[0] = h->dynindx >> 16;
|
||
erel->r_index[1] = h->dynindx >> 8;
|
||
erel->r_index[2] = h->dynindx;
|
||
}
|
||
else
|
||
{
|
||
erel->r_index[2] = h->dynindx >> 16;
|
||
erel->r_index[1] = h->dynindx >> 8;
|
||
erel->r_index[0] = h->dynindx;
|
||
}
|
||
}
|
||
|
||
++srel->reloc_count;
|
||
|
||
*skip = true;
|
||
|
||
return true;
|
||
}
|
||
|
||
/* Finish up the dynamic linking information. */
|
||
|
||
static boolean
|
||
sunos_finish_dynamic_link (abfd, info)
|
||
bfd *abfd;
|
||
struct bfd_link_info *info;
|
||
{
|
||
bfd *dynobj;
|
||
asection *o;
|
||
asection *s;
|
||
asection *sdyn;
|
||
struct external_sun4_dynamic esd;
|
||
struct external_sun4_dynamic_link esdl;
|
||
|
||
dynobj = sunos_hash_table (info)->dynobj;
|
||
if (dynobj == NULL)
|
||
return true;
|
||
|
||
sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
|
||
BFD_ASSERT (sdyn != NULL);
|
||
|
||
/* Finish up the .need section. The linker emulation code filled it
|
||
in, but with offsets from the start of the section instead of
|
||
real addresses. Now that we know the section location, we can
|
||
fill in the final values. */
|
||
s = bfd_get_section_by_name (dynobj, ".need");
|
||
BFD_ASSERT (s != NULL);
|
||
if (s->_raw_size != 0)
|
||
{
|
||
file_ptr filepos;
|
||
bfd_byte *p;
|
||
|
||
filepos = s->output_section->filepos + s->output_offset;
|
||
p = s->contents;
|
||
while (1)
|
||
{
|
||
bfd_vma val;
|
||
|
||
PUT_WORD (dynobj, GET_WORD (dynobj, p) + filepos, p);
|
||
val = GET_WORD (dynobj, p + 12);
|
||
if (val == 0)
|
||
break;
|
||
PUT_WORD (dynobj, val + filepos, p + 12);
|
||
p += 16;
|
||
}
|
||
}
|
||
|
||
/* The first entry in the .got section is the address of the dynamic
|
||
information. */
|
||
s = bfd_get_section_by_name (dynobj, ".got");
|
||
BFD_ASSERT (s != NULL);
|
||
PUT_WORD (dynobj, sdyn->output_section->vma + sdyn->output_offset,
|
||
s->contents);
|
||
|
||
for (o = dynobj->sections; o != NULL; o = o->next)
|
||
{
|
||
if ((o->flags & SEC_HAS_CONTENTS) != 0
|
||
&& o->contents != NULL)
|
||
{
|
||
BFD_ASSERT (o->output_section != NULL
|
||
&& o->output_section->owner == abfd);
|
||
if (! bfd_set_section_contents (abfd, o->output_section,
|
||
o->contents, o->output_offset,
|
||
o->_raw_size))
|
||
return false;
|
||
}
|
||
}
|
||
|
||
/* Finish up the dynamic link information. */
|
||
PUT_WORD (dynobj, (bfd_vma) 3, esd.ld_version);
|
||
PUT_WORD (dynobj,
|
||
sdyn->output_section->vma + sdyn->output_offset + sizeof esd,
|
||
esd.ldd);
|
||
PUT_WORD (dynobj,
|
||
(sdyn->output_section->vma
|
||
+ sdyn->output_offset
|
||
+ sizeof esd
|
||
+ EXTERNAL_SUN4_DYNAMIC_DEBUGGER_SIZE),
|
||
esd.ld);
|
||
|
||
if (! bfd_set_section_contents (abfd, sdyn->output_section, &esd,
|
||
sdyn->output_offset, sizeof esd))
|
||
return false;
|
||
|
||
|
||
PUT_WORD (dynobj, (bfd_vma) 0, esdl.ld_loaded);
|
||
|
||
s = bfd_get_section_by_name (dynobj, ".need");
|
||
BFD_ASSERT (s != NULL);
|
||
if (s->_raw_size == 0)
|
||
PUT_WORD (dynobj, (bfd_vma) 0, esdl.ld_need);
|
||
else
|
||
PUT_WORD (dynobj, s->output_section->filepos + s->output_offset,
|
||
esdl.ld_need);
|
||
|
||
s = bfd_get_section_by_name (dynobj, ".rules");
|
||
BFD_ASSERT (s != NULL);
|
||
if (s->_raw_size == 0)
|
||
PUT_WORD (dynobj, (bfd_vma) 0, esdl.ld_rules);
|
||
else
|
||
PUT_WORD (dynobj, s->output_section->filepos + s->output_offset,
|
||
esdl.ld_rules);
|
||
|
||
s = bfd_get_section_by_name (dynobj, ".got");
|
||
BFD_ASSERT (s != NULL);
|
||
PUT_WORD (dynobj, s->output_section->vma + s->output_offset, esdl.ld_got);
|
||
|
||
s = bfd_get_section_by_name (dynobj, ".plt");
|
||
BFD_ASSERT (s != NULL);
|
||
PUT_WORD (dynobj, s->output_section->vma + s->output_offset, esdl.ld_plt);
|
||
PUT_WORD (dynobj, s->_raw_size, esdl.ld_plt_sz);
|
||
|
||
s = bfd_get_section_by_name (dynobj, ".dynrel");
|
||
BFD_ASSERT (s != NULL);
|
||
BFD_ASSERT (s->reloc_count * obj_reloc_entry_size (dynobj) == s->_raw_size);
|
||
PUT_WORD (dynobj, s->output_section->filepos + s->output_offset,
|
||
esdl.ld_rel);
|
||
|
||
s = bfd_get_section_by_name (dynobj, ".hash");
|
||
BFD_ASSERT (s != NULL);
|
||
PUT_WORD (dynobj, s->output_section->filepos + s->output_offset,
|
||
esdl.ld_hash);
|
||
|
||
s = bfd_get_section_by_name (dynobj, ".dynsym");
|
||
BFD_ASSERT (s != NULL);
|
||
PUT_WORD (dynobj, s->output_section->filepos + s->output_offset,
|
||
esdl.ld_stab);
|
||
|
||
PUT_WORD (dynobj, (bfd_vma) 0, esdl.ld_stab_hash);
|
||
|
||
PUT_WORD (dynobj, (bfd_vma) sunos_hash_table (info)->bucketcount,
|
||
esdl.ld_buckets);
|
||
|
||
s = bfd_get_section_by_name (dynobj, ".dynstr");
|
||
BFD_ASSERT (s != NULL);
|
||
PUT_WORD (dynobj, s->output_section->filepos + s->output_offset,
|
||
esdl.ld_symbols);
|
||
PUT_WORD (dynobj, s->_raw_size, esdl.ld_symb_size);
|
||
|
||
/* The size of the text area is the size of the .text section
|
||
rounded up to a page boundary. FIXME: Should the page size be
|
||
conditional on something? */
|
||
PUT_WORD (dynobj,
|
||
BFD_ALIGN (obj_textsec (abfd)->_raw_size, 0x2000),
|
||
esdl.ld_text);
|
||
|
||
if (! bfd_set_section_contents (abfd, sdyn->output_section, &esdl,
|
||
(sdyn->output_offset
|
||
+ sizeof esd
|
||
+ EXTERNAL_SUN4_DYNAMIC_DEBUGGER_SIZE),
|
||
sizeof esdl))
|
||
return false;
|
||
|
||
abfd->flags |= DYNAMIC;
|
||
|
||
return true;
|
||
}
|