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[/] [open8_urisc/] [trunk/] [gnu/] [binutils/] [ld/] [emultempl/] [solaris2.em] - Blame information for rev 333

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1 145 khays
# This shell script emits a C file. -*- C -*-
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# It does some substitutions.
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if [ -z "$MACHINE" ]; then
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  OUTPUT_ARCH=${ARCH}
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else
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  OUTPUT_ARCH=${ARCH}:${MACHINE}
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fi
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fragment <
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/* This file is generated by a shell script.  DO NOT EDIT! */
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/* Solaris 2 emulation code for ${EMULATION_NAME}
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   Copyright 2010 Free Software Foundation, Inc.
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   Written by Rainer Orth 
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   This file is part of the GNU Binutils.
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   This program is free software; you can redistribute it and/or modify
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   it under the terms of the GNU General Public License as published by
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   the Free Software Foundation; either version 3 of the License, or
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   (at your option) any later version.
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   This program is distributed in the hope that it will be useful,
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   but WITHOUT ANY WARRANTY; without even the implied warranty of
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   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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   GNU General Public License for more details.
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   You should have received a copy of the GNU General Public License
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   along with this program; if not, write to the Free Software
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   Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
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   MA 02110-1301, USA.  */
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#define TARGET_IS_${EMULATION_NAME}
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/* The Solaris 2 ABI requires some global symbols to be present in the
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   .dynsym table of executables and shared objects.  If generating a
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   versioned shared object, they must always be bound to the base version.
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   Cf. Linker and Libraries Guide, Ch. 2, Link-Editor, Generating the Output
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   File, p.63.  */
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static void
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elf_solaris2_before_allocation (void)
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{
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  /* Global symbols required by the Solaris 2 ABI.  */
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  static const char *global_syms[] = {
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    "_DYNAMIC",
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    "_GLOBAL_OFFSET_TABLE_",
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    "_PROCEDURE_LINKAGE_TABLE_",
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    "_edata",
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    "_end",
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    "_etext",
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    NULL
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  };
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  const char **sym;
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  /* Do this for both executables and shared objects.  */
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  if (!link_info.relocatable)
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    {
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      for (sym = global_syms; *sym != NULL; sym++)
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        {
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          struct elf_link_hash_entry *h;
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          /* Lookup symbol.  */
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          h = elf_link_hash_lookup (elf_hash_table (&link_info), *sym,
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                                    FALSE, FALSE, FALSE);
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          if (h == NULL)
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            continue;
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          /* Undo the hiding done by _bfd_elf_define_linkage_sym.  */
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          h->forced_local = 0;
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          h->other &= ~STV_HIDDEN;
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          /* Emit it into the .dynamic section, too.  */
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          bfd_elf_link_record_dynamic_symbol (&link_info, h);
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        }
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    }
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  /* Only do this if emitting a shared object and versioning is in place. */
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  if (link_info.shared
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      && (link_info.version_info != NULL
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          || link_info.create_default_symver))
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    {
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      struct bfd_elf_version_expr *globals = NULL, *locals = NULL;
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      struct bfd_elf_version_tree *basever;
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      const char *soname;
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      for (sym = global_syms; *sym != NULL; sym++)
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        {
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          /* Create a version pattern for this symbol.  Some of them start
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             off as local, others as global, so try both.  */
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          globals = lang_new_vers_pattern (globals, *sym, NULL, TRUE);
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          locals = lang_new_vers_pattern (locals, *sym, NULL, TRUE);
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        }
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      /* New version node for those symbols.  */
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      basever = lang_new_vers_node (globals, locals);
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      /* The version name matches what bfd_elf_size_dynamic_sections uses
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         for the base version.  */
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      soname = bfd_elf_get_dt_soname (link_info.output_bfd);
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      if (soname == NULL)
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        soname = lbasename (bfd_get_filename (link_info.output_bfd));
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      /* Register the node.  */
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      lang_register_vers_node (soname, basever, NULL);
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      /* Enforce base version.  The encoded vd_ndx is vernum + 1.  */
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      basever->vernum = 0;
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    }
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  gld${EMULATION_NAME}_before_allocation ();
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}
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/* The Solaris 2 ABI requires two local symbols to be emitted for every
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   executable and shared object.
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   Cf. Linker and Libraries Guide, Ch. 2, Link-Editor, Generating the Output
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   File, p.63.  */
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static void
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elf_solaris2_after_allocation (void)
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{
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  /* Local symbols required by the Solaris 2 ABI.  Already emitted by
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     emulparams/solaris2.sh.  */
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  static const char *local_syms[] = {
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    "_START_",
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    "_END_",
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    NULL
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  };
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  const char **sym;
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  /* Do this for both executables and shared objects.  */
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  if (!link_info.relocatable)
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    {
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      for (sym = local_syms; *sym != NULL; sym++)
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        {
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          struct elf_link_hash_entry *h;
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          /* Lookup symbol.  */
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          h = elf_link_hash_lookup (elf_hash_table (&link_info), *sym,
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                                    FALSE, FALSE, FALSE);
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          if (h == NULL)
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            continue;
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          /* Turn it local.  */
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          h->forced_local = 1;
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          /* Type should be STT_OBJECT, not STT_NOTYPE.  */
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          h->type = STT_OBJECT;
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        }
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    }
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  gld${EMULATION_NAME}_after_allocation ();
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}
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EOF
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LDEMUL_BEFORE_ALLOCATION=elf_solaris2_before_allocation
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LDEMUL_AFTER_ALLOCATION=elf_solaris2_after_allocation

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