caf5f7a84c
libraries that need to be linked into an executable or library have to be listed on the command line explicitly. This commit fixes a bug in ld(1) where it would scan dependencies of the libraries on the command line and link them if needed if they were also found in ld.so.cache. The important bit of the patch is the initialisation of needed.by such that libraries found by scanning dependencies are marked as such and not used in the link. The patch is a backport of binutils git commit d5c8b1f8561426b41aa5330ed60f578178fe6be2 The author gave permission to use it under GPLv2 terms. PR: 192062 Exp-run by: antoine MFC after: 1 week
2071 lines
59 KiB
Plaintext
2071 lines
59 KiB
Plaintext
# This shell script emits a C file. -*- C -*-
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# It does some substitutions.
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# This file is now misnamed, because it supports both 32 bit and 64 bit
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# ELF emulations.
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test -z "${ELFSIZE}" && ELFSIZE=32
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if [ -z "$MACHINE" ]; then
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OUTPUT_ARCH=${ARCH}
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else
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OUTPUT_ARCH=${ARCH}:${MACHINE}
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fi
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cat >e${EMULATION_NAME}.c <<EOF
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/* This file is is generated by a shell script. DO NOT EDIT! */
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/* ${ELFSIZE} bit ELF emulation code for ${EMULATION_NAME}
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Copyright 1991, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001,
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2002, 2003, 2004, 2005, 2006, 2007 Free Software Foundation, Inc.
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Written by Steve Chamberlain <sac@cygnus.com>
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ELF support by Ian Lance Taylor <ian@cygnus.com>
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This file is part of GLD, the Gnu Linker.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. */
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#define TARGET_IS_${EMULATION_NAME}
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#include "sysdep.h"
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#include "bfd.h"
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#include "libiberty.h"
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#include "safe-ctype.h"
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#include "getopt.h"
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#include "bfdlink.h"
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#include "ld.h"
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#include "ldmain.h"
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#include "ldmisc.h"
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#include "ldexp.h"
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#include "ldlang.h"
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#include "ldfile.h"
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#include "ldemul.h"
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#include <ldgram.h>
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#include "elf/common.h"
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#include "elf-bfd.h"
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/* Declare functions used by various EXTRA_EM_FILEs. */
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static void gld${EMULATION_NAME}_before_parse (void);
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static void gld${EMULATION_NAME}_after_open (void);
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static void gld${EMULATION_NAME}_before_allocation (void);
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static bfd_boolean gld${EMULATION_NAME}_place_orphan (asection *s);
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static void gld${EMULATION_NAME}_finish (void);
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EOF
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if [ "x${USE_LIBPATH}" = xyes ] ; then
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case ${target} in
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*-*-linux-* | *-*-k*bsd*-*)
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cat >>e${EMULATION_NAME}.c <<EOF
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#ifdef HAVE_GLOB
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#include <glob.h>
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#endif
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EOF
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;;
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esac
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fi
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# Import any needed special functions and/or overrides.
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#
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. ${srcdir}/emultempl/elf-generic.em
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if test -n "$EXTRA_EM_FILE" ; then
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. ${srcdir}/emultempl/${EXTRA_EM_FILE}.em
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fi
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# Functions in this file can be overridden by setting the LDEMUL_* shell
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# variables. If the name of the overriding function is the same as is
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# defined in this file, then don't output this file's version.
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# If a different overriding name is given then output the standard function
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# as presumably it is called from the overriding function.
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#
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if test x"$LDEMUL_BEFORE_PARSE" != xgld"$EMULATION_NAME"_before_parse; then
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cat >>e${EMULATION_NAME}.c <<EOF
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static void
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gld${EMULATION_NAME}_before_parse (void)
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{
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ldfile_set_output_arch ("${OUTPUT_ARCH}", bfd_arch_`echo ${ARCH} | sed -e 's/:.*//'`);
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config.dynamic_link = ${DYNAMIC_LINK-TRUE};
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config.has_shared = `if test -n "$GENERATE_SHLIB_SCRIPT" ; then echo TRUE ; else echo FALSE ; fi`;
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}
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EOF
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fi
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if test x"$LDEMUL_RECOGNIZED_FILE" != xgld"${EMULATION_NAME}"_load_symbols; then
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cat >>e${EMULATION_NAME}.c <<EOF
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/* Handle as_needed DT_NEEDED. */
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static bfd_boolean
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gld${EMULATION_NAME}_load_symbols (lang_input_statement_type *entry)
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{
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int class = 0;
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/* Tell the ELF linker that we don't want the output file to have a
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DT_NEEDED entry for this file, unless it is used to resolve
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references in a regular object. */
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if (entry->as_needed)
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class = DYN_AS_NEEDED;
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/* Tell the ELF linker that we don't want the output file to have a
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DT_NEEDED entry for any dynamic library in DT_NEEDED tags from
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this file at all. */
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if (!entry->add_needed)
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class |= DYN_NO_ADD_NEEDED;
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if (entry->just_syms_flag
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&& (bfd_get_file_flags (entry->the_bfd) & DYNAMIC) != 0)
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einfo (_("%P%F: --just-symbols may not be used on DSO: %B\n"),
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entry->the_bfd);
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if (!class
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|| (bfd_get_file_flags (entry->the_bfd) & DYNAMIC) == 0)
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return FALSE;
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bfd_elf_set_dyn_lib_class (entry->the_bfd, class);
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/* Continue on with normal load_symbols processing. */
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return FALSE;
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}
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EOF
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fi
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cat >>e${EMULATION_NAME}.c <<EOF
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/* These variables are required to pass information back and forth
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between after_open and check_needed and stat_needed and vercheck. */
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static struct bfd_link_needed_list *global_needed;
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static struct stat global_stat;
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static lang_input_statement_type *global_found;
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static struct bfd_link_needed_list *global_vercheck_needed;
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static bfd_boolean global_vercheck_failed;
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/* On Linux, it's possible to have different versions of the same
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shared library linked against different versions of libc. The
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dynamic linker somehow tags which libc version to use in
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/etc/ld.so.cache, and, based on the libc that it sees in the
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executable, chooses which version of the shared library to use.
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We try to do a similar check here by checking whether this shared
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library needs any other shared libraries which may conflict with
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libraries we have already included in the link. If it does, we
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skip it, and try to find another shared library farther on down the
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link path.
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This is called via lang_for_each_input_file.
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GLOBAL_VERCHECK_NEEDED is the list of objects needed by the object
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which we are checking. This sets GLOBAL_VERCHECK_FAILED if we find
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a conflicting version. */
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static void
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gld${EMULATION_NAME}_vercheck (lang_input_statement_type *s)
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{
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const char *soname;
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struct bfd_link_needed_list *l;
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if (global_vercheck_failed)
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return;
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if (s->the_bfd == NULL
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|| (bfd_get_file_flags (s->the_bfd) & DYNAMIC) == 0)
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return;
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soname = bfd_elf_get_dt_soname (s->the_bfd);
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if (soname == NULL)
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soname = lbasename (bfd_get_filename (s->the_bfd));
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for (l = global_vercheck_needed; l != NULL; l = l->next)
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{
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const char *suffix;
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if (strcmp (soname, l->name) == 0)
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{
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/* Probably can't happen, but it's an easy check. */
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continue;
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}
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if (strchr (l->name, '/') != NULL)
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continue;
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suffix = strstr (l->name, ".so.");
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if (suffix == NULL)
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continue;
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suffix += sizeof ".so." - 1;
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if (strncmp (soname, l->name, suffix - l->name) == 0)
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{
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/* Here we know that S is a dynamic object FOO.SO.VER1, and
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the object we are considering needs a dynamic object
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FOO.SO.VER2, and VER1 and VER2 are different. This
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appears to be a version mismatch, so we tell the caller
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to try a different version of this library. */
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global_vercheck_failed = TRUE;
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return;
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}
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}
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}
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/* See if an input file matches a DT_NEEDED entry by running stat on
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the file. */
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static void
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gld${EMULATION_NAME}_stat_needed (lang_input_statement_type *s)
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{
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struct stat st;
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const char *suffix;
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const char *soname;
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if (global_found != NULL)
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return;
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if (s->the_bfd == NULL)
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return;
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/* If this input file was an as-needed entry, and wasn't found to be
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needed at the stage it was linked, then don't say we have loaded it. */
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if ((bfd_elf_get_dyn_lib_class (s->the_bfd) & DYN_AS_NEEDED) != 0)
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return;
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if (bfd_stat (s->the_bfd, &st) != 0)
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{
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einfo ("%P:%B: bfd_stat failed: %E\n", s->the_bfd);
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return;
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}
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/* Some operating systems, e.g. Windows, do not provide a meaningful
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st_ino; they always set it to zero. (Windows does provide a
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meaningful st_dev.) Do not indicate a duplicate library in that
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case. While there is no guarantee that a system that provides
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meaningful inode numbers will never set st_ino to zero, this is
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merely an optimization, so we do not need to worry about false
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negatives. */
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if (st.st_dev == global_stat.st_dev
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&& st.st_ino == global_stat.st_ino
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&& st.st_ino != 0)
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{
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global_found = s;
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return;
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}
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/* We issue a warning if it looks like we are including two
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different versions of the same shared library. For example,
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there may be a problem if -lc picks up libc.so.6 but some other
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shared library has a DT_NEEDED entry of libc.so.5. This is a
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heuristic test, and it will only work if the name looks like
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NAME.so.VERSION. FIXME: Depending on file names is error-prone.
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If we really want to issue warnings about mixing version numbers
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of shared libraries, we need to find a better way. */
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if (strchr (global_needed->name, '/') != NULL)
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return;
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suffix = strstr (global_needed->name, ".so.");
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if (suffix == NULL)
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return;
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suffix += sizeof ".so." - 1;
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soname = bfd_elf_get_dt_soname (s->the_bfd);
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if (soname == NULL)
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soname = lbasename (s->filename);
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if (strncmp (soname, global_needed->name, suffix - global_needed->name) == 0)
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einfo ("%P: warning: %s, needed by %B, may conflict with %s\n",
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global_needed->name, global_needed->by, soname);
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}
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struct dt_needed
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{
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bfd *by;
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const char *name;
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};
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/* This function is called for each possible name for a dynamic object
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named by a DT_NEEDED entry. The FORCE parameter indicates whether
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to skip the check for a conflicting version. */
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static bfd_boolean
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gld${EMULATION_NAME}_try_needed (struct dt_needed *needed,
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int force)
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{
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bfd *abfd;
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const char *name = needed->name;
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const char *soname;
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int class;
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abfd = bfd_openr (name, bfd_get_target (output_bfd));
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if (abfd == NULL)
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return FALSE;
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if (! bfd_check_format (abfd, bfd_object))
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{
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bfd_close (abfd);
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return FALSE;
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}
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if ((bfd_get_file_flags (abfd) & DYNAMIC) == 0)
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{
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bfd_close (abfd);
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return FALSE;
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}
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/* For DT_NEEDED, they have to match. */
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if (abfd->xvec != output_bfd->xvec)
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{
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bfd_close (abfd);
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return FALSE;
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}
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/* Check whether this object would include any conflicting library
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versions. If FORCE is set, then we skip this check; we use this
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the second time around, if we couldn't find any compatible
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instance of the shared library. */
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if (! force)
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{
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struct bfd_link_needed_list *needed;
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if (! bfd_elf_get_bfd_needed_list (abfd, &needed))
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einfo ("%F%P:%B: bfd_elf_get_bfd_needed_list failed: %E\n", abfd);
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if (needed != NULL)
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{
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global_vercheck_needed = needed;
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global_vercheck_failed = FALSE;
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lang_for_each_input_file (gld${EMULATION_NAME}_vercheck);
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if (global_vercheck_failed)
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{
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bfd_close (abfd);
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/* Return FALSE to force the caller to move on to try
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another file on the search path. */
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return FALSE;
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}
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/* But wait! It gets much worse. On Linux, if a shared
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library does not use libc at all, we are supposed to skip
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it the first time around in case we encounter a shared
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library later on with the same name which does use the
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version of libc that we want. This is much too horrible
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to use on any system other than Linux. */
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EOF
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case ${target} in
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*-*-linux-* | *-*-k*bsd*-*)
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cat >>e${EMULATION_NAME}.c <<EOF
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{
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struct bfd_link_needed_list *l;
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for (l = needed; l != NULL; l = l->next)
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if (CONST_STRNEQ (l->name, "libc.so"))
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break;
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if (l == NULL)
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{
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bfd_close (abfd);
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return FALSE;
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}
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}
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EOF
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;;
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esac
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cat >>e${EMULATION_NAME}.c <<EOF
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}
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}
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/* We've found a dynamic object matching the DT_NEEDED entry. */
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/* We have already checked that there is no other input file of the
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same name. We must now check again that we are not including the
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same file twice. We need to do this because on many systems
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libc.so is a symlink to, e.g., libc.so.1. The SONAME entry will
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reference libc.so.1. If we have already included libc.so, we
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don't want to include libc.so.1 if they are the same file, and we
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can only check that using stat. */
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if (bfd_stat (abfd, &global_stat) != 0)
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einfo ("%F%P:%B: bfd_stat failed: %E\n", abfd);
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|
/* First strip off everything before the last '/'. */
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|
soname = lbasename (abfd->filename);
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if (trace_file_tries)
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info_msg (_("found %s at %s\n"), soname, name);
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global_found = NULL;
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lang_for_each_input_file (gld${EMULATION_NAME}_stat_needed);
|
|
if (global_found != NULL)
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{
|
|
/* Return TRUE to indicate that we found the file, even though
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|
we aren't going to do anything with it. */
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|
return TRUE;
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}
|
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|
|
/* Specify the soname to use. */
|
|
bfd_elf_set_dt_needed_name (abfd, soname);
|
|
|
|
/* Tell the ELF linker that we don't want the output file to have a
|
|
DT_NEEDED entry for this file, unless it is used to resolve
|
|
references in a regular object. */
|
|
class = DYN_DT_NEEDED;
|
|
|
|
/* Tell the ELF linker that we don't want the output file to have a
|
|
DT_NEEDED entry for this file at all if the entry is from a file
|
|
with DYN_NO_ADD_NEEDED. */
|
|
if (needed->by != NULL
|
|
&& (bfd_elf_get_dyn_lib_class (needed->by) & DYN_NO_ADD_NEEDED) != 0)
|
|
class |= DYN_NO_NEEDED | DYN_NO_ADD_NEEDED;
|
|
|
|
bfd_elf_set_dyn_lib_class (abfd, class);
|
|
|
|
/* Add this file into the symbol table. */
|
|
if (! bfd_link_add_symbols (abfd, &link_info))
|
|
einfo ("%F%B: could not read symbols: %E\n", abfd);
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
|
|
/* Search for a needed file in a path. */
|
|
|
|
static bfd_boolean
|
|
gld${EMULATION_NAME}_search_needed (const char *path,
|
|
struct dt_needed *n, int force)
|
|
{
|
|
const char *s;
|
|
const char *name = n->name;
|
|
size_t len;
|
|
struct dt_needed needed;
|
|
|
|
if (name[0] == '/')
|
|
return gld${EMULATION_NAME}_try_needed (n, force);
|
|
|
|
if (path == NULL || *path == '\0')
|
|
return FALSE;
|
|
|
|
needed.by = n->by;
|
|
needed.name = n->name;
|
|
|
|
len = strlen (name);
|
|
while (1)
|
|
{
|
|
char *filename, *sset;
|
|
|
|
s = strchr (path, config.rpath_separator);
|
|
if (s == NULL)
|
|
s = path + strlen (path);
|
|
|
|
filename = (char *) xmalloc (s - path + len + 2);
|
|
if (s == path)
|
|
sset = filename;
|
|
else
|
|
{
|
|
memcpy (filename, path, s - path);
|
|
filename[s - path] = '/';
|
|
sset = filename + (s - path) + 1;
|
|
}
|
|
strcpy (sset, name);
|
|
|
|
needed.name = filename;
|
|
if (gld${EMULATION_NAME}_try_needed (&needed, force))
|
|
return TRUE;
|
|
|
|
free (filename);
|
|
|
|
if (*s == '\0')
|
|
break;
|
|
path = s + 1;
|
|
}
|
|
|
|
return FALSE;
|
|
}
|
|
|
|
EOF
|
|
if [ "x${USE_LIBPATH}" = xyes ] ; then
|
|
cat >>e${EMULATION_NAME}.c <<EOF
|
|
|
|
/* Add the sysroot to every entry in a path separated by
|
|
config.rpath_separator. */
|
|
|
|
static char *
|
|
gld${EMULATION_NAME}_add_sysroot (const char *path)
|
|
{
|
|
int len, colons, i;
|
|
char *ret, *p;
|
|
|
|
len = strlen (path);
|
|
colons = 0;
|
|
i = 0;
|
|
while (path[i])
|
|
if (path[i++] == config.rpath_separator)
|
|
colons++;
|
|
|
|
if (path[i])
|
|
colons++;
|
|
|
|
len = len + (colons + 1) * strlen (ld_sysroot);
|
|
ret = xmalloc (len + 1);
|
|
strcpy (ret, ld_sysroot);
|
|
p = ret + strlen (ret);
|
|
i = 0;
|
|
while (path[i])
|
|
if (path[i] == config.rpath_separator)
|
|
{
|
|
*p++ = path[i++];
|
|
strcpy (p, ld_sysroot);
|
|
p = p + strlen (p);
|
|
}
|
|
else
|
|
*p++ = path[i++];
|
|
|
|
*p = 0;
|
|
return ret;
|
|
}
|
|
|
|
EOF
|
|
case ${target} in
|
|
*-*-freebsd* | *-*-dragonfly*)
|
|
cat >>e${EMULATION_NAME}.c <<EOF
|
|
/* Read the system search path the FreeBSD way rather than the Linux way. */
|
|
#ifdef HAVE_ELF_HINTS_H
|
|
#include <elf-hints.h>
|
|
#else
|
|
#include "elf-hints-local.h"
|
|
#endif
|
|
|
|
static bfd_boolean
|
|
gld${EMULATION_NAME}_check_ld_elf_hints (const struct bfd_link_needed_list *l,
|
|
int force)
|
|
{
|
|
static bfd_boolean initialized;
|
|
static char *ld_elf_hints;
|
|
struct dt_needed needed;
|
|
|
|
if (!initialized)
|
|
{
|
|
FILE *f;
|
|
char *tmppath;
|
|
|
|
tmppath = concat (ld_sysroot, _PATH_ELF_HINTS, NULL);
|
|
f = fopen (tmppath, FOPEN_RB);
|
|
free (tmppath);
|
|
if (f != NULL)
|
|
{
|
|
struct elfhints_hdr hdr;
|
|
|
|
if (fread (&hdr, 1, sizeof (hdr), f) == sizeof (hdr)
|
|
&& hdr.magic == ELFHINTS_MAGIC
|
|
&& hdr.version == 1)
|
|
{
|
|
if (fseek (f, hdr.strtab + hdr.dirlist, SEEK_SET) != -1)
|
|
{
|
|
char *b;
|
|
|
|
b = xmalloc (hdr.dirlistlen + 1);
|
|
if (fread (b, 1, hdr.dirlistlen + 1, f) ==
|
|
hdr.dirlistlen + 1)
|
|
ld_elf_hints = gld${EMULATION_NAME}_add_sysroot (b);
|
|
|
|
free (b);
|
|
}
|
|
}
|
|
fclose (f);
|
|
}
|
|
|
|
initialized = TRUE;
|
|
}
|
|
|
|
if (ld_elf_hints == NULL)
|
|
return FALSE;
|
|
|
|
needed.by = l->by;
|
|
needed.name = l->name;
|
|
return gld${EMULATION_NAME}_search_needed (ld_elf_hints, &needed, force);
|
|
}
|
|
EOF
|
|
# FreeBSD
|
|
;;
|
|
|
|
*-*-linux-* | *-*-k*bsd*-*)
|
|
cat >>e${EMULATION_NAME}.c <<EOF
|
|
/* For a native linker, check the file /etc/ld.so.conf for directories
|
|
in which we may find shared libraries. /etc/ld.so.conf is really
|
|
only meaningful on Linux. */
|
|
|
|
struct gld${EMULATION_NAME}_ld_so_conf
|
|
{
|
|
char *path;
|
|
size_t len, alloc;
|
|
};
|
|
|
|
static bfd_boolean
|
|
gld${EMULATION_NAME}_parse_ld_so_conf
|
|
(struct gld${EMULATION_NAME}_ld_so_conf *info, const char *filename);
|
|
|
|
static void
|
|
gld${EMULATION_NAME}_parse_ld_so_conf_include
|
|
(struct gld${EMULATION_NAME}_ld_so_conf *info, const char *filename,
|
|
const char *pattern)
|
|
{
|
|
char *newp = NULL;
|
|
#ifdef HAVE_GLOB
|
|
glob_t gl;
|
|
#endif
|
|
|
|
if (pattern[0] != '/')
|
|
{
|
|
char *p = strrchr (filename, '/');
|
|
size_t patlen = strlen (pattern) + 1;
|
|
|
|
newp = xmalloc (p - filename + 1 + patlen);
|
|
memcpy (newp, filename, p - filename + 1);
|
|
memcpy (newp + (p - filename + 1), pattern, patlen);
|
|
pattern = newp;
|
|
}
|
|
|
|
#ifdef HAVE_GLOB
|
|
if (glob (pattern, 0, NULL, &gl) == 0)
|
|
{
|
|
size_t i;
|
|
|
|
for (i = 0; i < gl.gl_pathc; ++i)
|
|
gld${EMULATION_NAME}_parse_ld_so_conf (info, gl.gl_pathv[i]);
|
|
globfree (&gl);
|
|
}
|
|
#else
|
|
/* If we do not have glob, treat the pattern as a literal filename. */
|
|
gld${EMULATION_NAME}_parse_ld_so_conf (info, pattern);
|
|
#endif
|
|
|
|
if (newp)
|
|
free (newp);
|
|
}
|
|
|
|
static bfd_boolean
|
|
gld${EMULATION_NAME}_parse_ld_so_conf
|
|
(struct gld${EMULATION_NAME}_ld_so_conf *info, const char *filename)
|
|
{
|
|
FILE *f = fopen (filename, FOPEN_RT);
|
|
char *line;
|
|
size_t linelen;
|
|
|
|
if (f == NULL)
|
|
return FALSE;
|
|
|
|
linelen = 256;
|
|
line = xmalloc (linelen);
|
|
do
|
|
{
|
|
char *p = line, *q;
|
|
|
|
/* Normally this would use getline(3), but we need to be portable. */
|
|
while ((q = fgets (p, linelen - (p - line), f)) != NULL
|
|
&& strlen (q) == linelen - (p - line) - 1
|
|
&& line[linelen - 2] != '\n')
|
|
{
|
|
line = xrealloc (line, 2 * linelen);
|
|
p = line + linelen - 1;
|
|
linelen += linelen;
|
|
}
|
|
|
|
if (q == NULL && p == line)
|
|
break;
|
|
|
|
p = strchr (line, '\n');
|
|
if (p)
|
|
*p = '\0';
|
|
|
|
/* Because the file format does not know any form of quoting we
|
|
can search forward for the next '#' character and if found
|
|
make it terminating the line. */
|
|
p = strchr (line, '#');
|
|
if (p)
|
|
*p = '\0';
|
|
|
|
/* Remove leading whitespace. NUL is no whitespace character. */
|
|
p = line;
|
|
while (*p == ' ' || *p == '\f' || *p == '\r' || *p == '\t' || *p == '\v')
|
|
++p;
|
|
|
|
/* If the line is blank it is ignored. */
|
|
if (p[0] == '\0')
|
|
continue;
|
|
|
|
if (CONST_STRNEQ (p, "include") && (p[7] == ' ' || p[7] == '\t'))
|
|
{
|
|
char *dir, c;
|
|
p += 8;
|
|
do
|
|
{
|
|
while (*p == ' ' || *p == '\t')
|
|
++p;
|
|
|
|
if (*p == '\0')
|
|
break;
|
|
|
|
dir = p;
|
|
|
|
while (*p != ' ' && *p != '\t' && *p)
|
|
++p;
|
|
|
|
c = *p;
|
|
*p++ = '\0';
|
|
if (dir[0] != '\0')
|
|
gld${EMULATION_NAME}_parse_ld_so_conf_include (info, filename,
|
|
dir);
|
|
}
|
|
while (c != '\0');
|
|
}
|
|
else
|
|
{
|
|
char *dir = p;
|
|
while (*p && *p != '=' && *p != ' ' && *p != '\t' && *p != '\f'
|
|
&& *p != '\r' && *p != '\v')
|
|
++p;
|
|
|
|
while (p != dir && p[-1] == '/')
|
|
--p;
|
|
if (info->path == NULL)
|
|
{
|
|
info->alloc = p - dir + 1 + 256;
|
|
info->path = xmalloc (info->alloc);
|
|
info->len = 0;
|
|
}
|
|
else
|
|
{
|
|
if (info->len + 1 + (p - dir) >= info->alloc)
|
|
{
|
|
info->alloc += p - dir + 256;
|
|
info->path = xrealloc (info->path, info->alloc);
|
|
}
|
|
info->path[info->len++] = config.rpath_separator;
|
|
}
|
|
memcpy (info->path + info->len, dir, p - dir);
|
|
info->len += p - dir;
|
|
info->path[info->len] = '\0';
|
|
}
|
|
}
|
|
while (! feof (f));
|
|
free (line);
|
|
fclose (f);
|
|
return TRUE;
|
|
}
|
|
|
|
static bfd_boolean
|
|
gld${EMULATION_NAME}_check_ld_so_conf (const struct bfd_link_needed_list *l,
|
|
int force)
|
|
{
|
|
static bfd_boolean initialized;
|
|
static char *ld_so_conf;
|
|
struct dt_needed needed;
|
|
|
|
if (! initialized)
|
|
{
|
|
char *tmppath;
|
|
struct gld${EMULATION_NAME}_ld_so_conf info;
|
|
|
|
info.path = NULL;
|
|
info.len = info.alloc = 0;
|
|
tmppath = concat (ld_sysroot, "${prefix}/etc/ld.so.conf", NULL);
|
|
if (!gld${EMULATION_NAME}_parse_ld_so_conf (&info, tmppath))
|
|
{
|
|
free (tmppath);
|
|
tmppath = concat (ld_sysroot, "/etc/ld.so.conf", NULL);
|
|
gld${EMULATION_NAME}_parse_ld_so_conf (&info, tmppath);
|
|
}
|
|
free (tmppath);
|
|
|
|
if (info.path)
|
|
{
|
|
char *d = gld${EMULATION_NAME}_add_sysroot (info.path);
|
|
free (info.path);
|
|
ld_so_conf = d;
|
|
}
|
|
initialized = TRUE;
|
|
}
|
|
|
|
if (ld_so_conf == NULL)
|
|
return FALSE;
|
|
|
|
|
|
needed.by = l->by;
|
|
needed.name = l->name;
|
|
return gld${EMULATION_NAME}_search_needed (ld_so_conf, &needed, force);
|
|
}
|
|
|
|
EOF
|
|
# Linux
|
|
;;
|
|
esac
|
|
fi
|
|
cat >>e${EMULATION_NAME}.c <<EOF
|
|
|
|
/* See if an input file matches a DT_NEEDED entry by name. */
|
|
|
|
static void
|
|
gld${EMULATION_NAME}_check_needed (lang_input_statement_type *s)
|
|
{
|
|
const char *soname;
|
|
|
|
/* Stop looking if we've found a loaded lib. */
|
|
if (global_found != NULL
|
|
&& (bfd_elf_get_dyn_lib_class (global_found->the_bfd)
|
|
& DYN_AS_NEEDED) == 0)
|
|
return;
|
|
|
|
if (s->filename == NULL || s->the_bfd == NULL)
|
|
return;
|
|
|
|
/* Don't look for a second non-loaded as-needed lib. */
|
|
if (global_found != NULL
|
|
&& (bfd_elf_get_dyn_lib_class (s->the_bfd) & DYN_AS_NEEDED) != 0)
|
|
return;
|
|
|
|
if (strcmp (s->filename, global_needed->name) == 0)
|
|
{
|
|
global_found = s;
|
|
return;
|
|
}
|
|
|
|
if (s->search_dirs_flag)
|
|
{
|
|
const char *f = strrchr (s->filename, '/');
|
|
if (f != NULL
|
|
&& strcmp (f + 1, global_needed->name) == 0)
|
|
{
|
|
global_found = s;
|
|
return;
|
|
}
|
|
}
|
|
|
|
soname = bfd_elf_get_dt_soname (s->the_bfd);
|
|
if (soname != NULL
|
|
&& strcmp (soname, global_needed->name) == 0)
|
|
{
|
|
global_found = s;
|
|
return;
|
|
}
|
|
}
|
|
|
|
EOF
|
|
|
|
if test x"$LDEMUL_AFTER_OPEN" != xgld"$EMULATION_NAME"_after_open; then
|
|
cat >>e${EMULATION_NAME}.c <<EOF
|
|
|
|
/* This is called after all the input files have been opened. */
|
|
|
|
static void
|
|
gld${EMULATION_NAME}_after_open (void)
|
|
{
|
|
struct bfd_link_needed_list *needed, *l;
|
|
|
|
if (link_info.eh_frame_hdr
|
|
&& ! link_info.traditional_format
|
|
&& ! link_info.relocatable)
|
|
{
|
|
struct elf_link_hash_table *htab;
|
|
|
|
htab = elf_hash_table (&link_info);
|
|
if (is_elf_hash_table (htab))
|
|
{
|
|
bfd *abfd;
|
|
asection *s;
|
|
|
|
for (abfd = link_info.input_bfds; abfd; abfd = abfd->link_next)
|
|
{
|
|
s = bfd_get_section_by_name (abfd, ".eh_frame");
|
|
if (s && s->size > 8 && !bfd_is_abs_section (s->output_section))
|
|
break;
|
|
}
|
|
if (abfd)
|
|
{
|
|
const struct elf_backend_data *bed;
|
|
|
|
bed = get_elf_backend_data (abfd);
|
|
s = bfd_make_section_with_flags (abfd, ".eh_frame_hdr",
|
|
bed->dynamic_sec_flags
|
|
| SEC_READONLY);
|
|
if (s != NULL
|
|
&& bfd_set_section_alignment (abfd, s, 2))
|
|
htab->eh_info.hdr_sec = s;
|
|
else
|
|
einfo ("%P: warning: Cannot create .eh_frame_hdr section,"
|
|
" --eh-frame-hdr ignored.\n");
|
|
}
|
|
}
|
|
}
|
|
|
|
/* We only need to worry about this when doing a final link. */
|
|
if (link_info.relocatable || !link_info.executable)
|
|
return;
|
|
|
|
/* Get the list of files which appear in DT_NEEDED entries in
|
|
dynamic objects included in the link (often there will be none).
|
|
For each such file, we want to track down the corresponding
|
|
library, and include the symbol table in the link. This is what
|
|
the runtime dynamic linker will do. Tracking the files down here
|
|
permits one dynamic object to include another without requiring
|
|
special action by the person doing the link. Note that the
|
|
needed list can actually grow while we are stepping through this
|
|
loop. */
|
|
needed = bfd_elf_get_needed_list (output_bfd, &link_info);
|
|
for (l = needed; l != NULL; l = l->next)
|
|
{
|
|
struct bfd_link_needed_list *ll;
|
|
struct dt_needed n, nn;
|
|
int force;
|
|
|
|
/* If the lib that needs this one was --as-needed and wasn't
|
|
found to be needed, then this lib isn't needed either. */
|
|
if (l->by != NULL
|
|
&& (bfd_elf_get_dyn_lib_class (l->by) & DYN_AS_NEEDED) != 0)
|
|
continue;
|
|
|
|
/* If we've already seen this file, skip it. */
|
|
for (ll = needed; ll != l; ll = ll->next)
|
|
if ((ll->by == NULL
|
|
|| (bfd_elf_get_dyn_lib_class (ll->by) & DYN_AS_NEEDED) == 0)
|
|
&& strcmp (ll->name, l->name) == 0)
|
|
break;
|
|
if (ll != l)
|
|
continue;
|
|
|
|
/* See if this file was included in the link explicitly. */
|
|
global_needed = l;
|
|
global_found = NULL;
|
|
lang_for_each_input_file (gld${EMULATION_NAME}_check_needed);
|
|
if (global_found != NULL
|
|
&& (bfd_elf_get_dyn_lib_class (global_found->the_bfd)
|
|
& DYN_AS_NEEDED) == 0)
|
|
continue;
|
|
|
|
n.by = l->by;
|
|
n.name = l->name;
|
|
nn.by = l->by;
|
|
if (trace_file_tries)
|
|
info_msg (_("%s needed by %B\n"), l->name, l->by);
|
|
|
|
/* As-needed libs specified on the command line (or linker script)
|
|
take priority over libs found in search dirs. */
|
|
if (global_found != NULL)
|
|
{
|
|
nn.name = global_found->filename;
|
|
if (gld${EMULATION_NAME}_try_needed (&nn, TRUE))
|
|
continue;
|
|
}
|
|
|
|
/* We need to find this file and include the symbol table. We
|
|
want to search for the file in the same way that the dynamic
|
|
linker will search. That means that we want to use
|
|
rpath_link, rpath, then the environment variable
|
|
LD_LIBRARY_PATH (native only), then the DT_RPATH/DT_RUNPATH
|
|
entries (native only), then the linker script LIB_SEARCH_DIRS.
|
|
We do not search using the -L arguments.
|
|
|
|
We search twice. The first time, we skip objects which may
|
|
introduce version mismatches. The second time, we force
|
|
their use. See gld${EMULATION_NAME}_vercheck comment. */
|
|
for (force = 0; force < 2; force++)
|
|
{
|
|
size_t len;
|
|
search_dirs_type *search;
|
|
EOF
|
|
if [ "x${NATIVE}" = xyes ] ; then
|
|
cat >>e${EMULATION_NAME}.c <<EOF
|
|
const char *lib_path;
|
|
EOF
|
|
fi
|
|
if [ "x${USE_LIBPATH}" = xyes ] ; then
|
|
cat >>e${EMULATION_NAME}.c <<EOF
|
|
struct bfd_link_needed_list *rp;
|
|
int found;
|
|
EOF
|
|
fi
|
|
cat >>e${EMULATION_NAME}.c <<EOF
|
|
|
|
if (gld${EMULATION_NAME}_search_needed (command_line.rpath_link,
|
|
&n, force))
|
|
break;
|
|
EOF
|
|
if [ "x${USE_LIBPATH}" = xyes ] ; then
|
|
cat >>e${EMULATION_NAME}.c <<EOF
|
|
if (gld${EMULATION_NAME}_search_needed (command_line.rpath,
|
|
&n, force))
|
|
break;
|
|
EOF
|
|
fi
|
|
if [ "x${NATIVE}" = xyes ] ; then
|
|
cat >>e${EMULATION_NAME}.c <<EOF
|
|
if (command_line.rpath_link == NULL
|
|
&& command_line.rpath == NULL)
|
|
{
|
|
lib_path = (const char *) getenv ("LD_RUN_PATH");
|
|
if (gld${EMULATION_NAME}_search_needed (lib_path, &n,
|
|
force))
|
|
break;
|
|
}
|
|
lib_path = (const char *) getenv ("LD_LIBRARY_PATH");
|
|
if (gld${EMULATION_NAME}_search_needed (lib_path, &n, force))
|
|
break;
|
|
EOF
|
|
fi
|
|
if [ "x${USE_LIBPATH}" = xyes ] ; then
|
|
cat >>e${EMULATION_NAME}.c <<EOF
|
|
found = 0;
|
|
rp = bfd_elf_get_runpath_list (output_bfd, &link_info);
|
|
for (; !found && rp != NULL; rp = rp->next)
|
|
{
|
|
char *tmpname = gld${EMULATION_NAME}_add_sysroot (rp->name);
|
|
found = (rp->by == l->by
|
|
&& gld${EMULATION_NAME}_search_needed (tmpname,
|
|
&n,
|
|
force));
|
|
free (tmpname);
|
|
}
|
|
if (found)
|
|
break;
|
|
|
|
EOF
|
|
fi
|
|
if [ "x${USE_LIBPATH}" = xyes ] ; then
|
|
case ${target} in
|
|
*-*-freebsd* | *-*-dragonfly*)
|
|
cat >>e${EMULATION_NAME}.c <<EOF
|
|
if (gld${EMULATION_NAME}_check_ld_elf_hints (l, force))
|
|
break;
|
|
EOF
|
|
# FreeBSD
|
|
;;
|
|
|
|
*-*-linux-* | *-*-k*bsd*-*)
|
|
# Linux
|
|
cat >>e${EMULATION_NAME}.c <<EOF
|
|
if (gld${EMULATION_NAME}_check_ld_so_conf (l, force))
|
|
break;
|
|
|
|
EOF
|
|
;;
|
|
esac
|
|
fi
|
|
cat >>e${EMULATION_NAME}.c <<EOF
|
|
len = strlen (l->name);
|
|
for (search = search_head; search != NULL; search = search->next)
|
|
{
|
|
char *filename;
|
|
|
|
if (search->cmdline)
|
|
continue;
|
|
filename = (char *) xmalloc (strlen (search->name) + len + 2);
|
|
sprintf (filename, "%s/%s", search->name, l->name);
|
|
nn.name = filename;
|
|
if (gld${EMULATION_NAME}_try_needed (&nn, force))
|
|
break;
|
|
free (filename);
|
|
}
|
|
if (search != NULL)
|
|
break;
|
|
EOF
|
|
cat >>e${EMULATION_NAME}.c <<EOF
|
|
}
|
|
|
|
if (force < 2)
|
|
continue;
|
|
|
|
einfo ("%P: warning: %s, needed by %B, not found (try using -rpath or -rpath-link)\n",
|
|
l->name, l->by);
|
|
}
|
|
}
|
|
|
|
EOF
|
|
fi
|
|
|
|
cat >>e${EMULATION_NAME}.c <<EOF
|
|
|
|
/* Look through an expression for an assignment statement. */
|
|
|
|
static void
|
|
gld${EMULATION_NAME}_find_exp_assignment (etree_type *exp)
|
|
{
|
|
bfd_boolean provide = FALSE;
|
|
|
|
switch (exp->type.node_class)
|
|
{
|
|
case etree_provide:
|
|
provide = TRUE;
|
|
/* Fall thru */
|
|
case etree_assign:
|
|
/* We call record_link_assignment even if the symbol is defined.
|
|
This is because if it is defined by a dynamic object, we
|
|
actually want to use the value defined by the linker script,
|
|
not the value from the dynamic object (because we are setting
|
|
symbols like etext). If the symbol is defined by a regular
|
|
object, then, as it happens, calling record_link_assignment
|
|
will do no harm. */
|
|
if (strcmp (exp->assign.dst, ".") != 0)
|
|
{
|
|
if (!bfd_elf_record_link_assignment (output_bfd, &link_info,
|
|
exp->assign.dst, provide,
|
|
exp->assign.hidden))
|
|
einfo ("%P%F: failed to record assignment to %s: %E\n",
|
|
exp->assign.dst);
|
|
}
|
|
gld${EMULATION_NAME}_find_exp_assignment (exp->assign.src);
|
|
break;
|
|
|
|
case etree_binary:
|
|
gld${EMULATION_NAME}_find_exp_assignment (exp->binary.lhs);
|
|
gld${EMULATION_NAME}_find_exp_assignment (exp->binary.rhs);
|
|
break;
|
|
|
|
case etree_trinary:
|
|
gld${EMULATION_NAME}_find_exp_assignment (exp->trinary.cond);
|
|
gld${EMULATION_NAME}_find_exp_assignment (exp->trinary.lhs);
|
|
gld${EMULATION_NAME}_find_exp_assignment (exp->trinary.rhs);
|
|
break;
|
|
|
|
case etree_unary:
|
|
gld${EMULATION_NAME}_find_exp_assignment (exp->unary.child);
|
|
break;
|
|
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
|
|
|
|
/* This is called by the before_allocation routine via
|
|
lang_for_each_statement. It locates any assignment statements, and
|
|
tells the ELF backend about them, in case they are assignments to
|
|
symbols which are referred to by dynamic objects. */
|
|
|
|
static void
|
|
gld${EMULATION_NAME}_find_statement_assignment (lang_statement_union_type *s)
|
|
{
|
|
if (s->header.type == lang_assignment_statement_enum)
|
|
gld${EMULATION_NAME}_find_exp_assignment (s->assignment_statement.exp);
|
|
}
|
|
|
|
EOF
|
|
|
|
if test x"$LDEMUL_BEFORE_ALLOCATION" != xgld"$EMULATION_NAME"_before_allocation; then
|
|
if test x"${ELF_INTERPRETER_NAME+set}" = xset; then
|
|
ELF_INTERPRETER_SET_DEFAULT="
|
|
if (sinterp != NULL)
|
|
{
|
|
sinterp->contents = (unsigned char *) ${ELF_INTERPRETER_NAME};
|
|
sinterp->size = strlen ((char *) sinterp->contents) + 1;
|
|
}
|
|
|
|
"
|
|
else
|
|
ELF_INTERPRETER_SET_DEFAULT=
|
|
fi
|
|
cat >>e${EMULATION_NAME}.c <<EOF
|
|
|
|
/* This is called after the sections have been attached to output
|
|
sections, but before any sizes or addresses have been set. */
|
|
|
|
static void
|
|
gld${EMULATION_NAME}_before_allocation (void)
|
|
{
|
|
const char *rpath;
|
|
asection *sinterp;
|
|
|
|
if (link_info.hash->type == bfd_link_elf_hash_table)
|
|
_bfd_elf_tls_setup (output_bfd, &link_info);
|
|
|
|
/* If we are going to make any variable assignments, we need to let
|
|
the ELF backend know about them in case the variables are
|
|
referred to by dynamic objects. */
|
|
lang_for_each_statement (gld${EMULATION_NAME}_find_statement_assignment);
|
|
|
|
/* Let the ELF backend work out the sizes of any sections required
|
|
by dynamic linking. */
|
|
rpath = command_line.rpath;
|
|
if (rpath == NULL)
|
|
rpath = (const char *) getenv ("LD_RUN_PATH");
|
|
if (! (bfd_elf_size_dynamic_sections
|
|
(output_bfd, command_line.soname, rpath,
|
|
command_line.filter_shlib,
|
|
(const char * const *) command_line.auxiliary_filters,
|
|
&link_info, &sinterp, lang_elf_version_info)))
|
|
einfo ("%P%F: failed to set dynamic section sizes: %E\n");
|
|
|
|
${ELF_INTERPRETER_SET_DEFAULT}
|
|
/* Let the user override the dynamic linker we are using. */
|
|
if (command_line.interpreter != NULL
|
|
&& sinterp != NULL)
|
|
{
|
|
sinterp->contents = (bfd_byte *) command_line.interpreter;
|
|
sinterp->size = strlen (command_line.interpreter) + 1;
|
|
}
|
|
|
|
/* Look for any sections named .gnu.warning. As a GNU extensions,
|
|
we treat such sections as containing warning messages. We print
|
|
out the warning message, and then zero out the section size so
|
|
that it does not get copied into the output file. */
|
|
|
|
{
|
|
LANG_FOR_EACH_INPUT_STATEMENT (is)
|
|
{
|
|
asection *s;
|
|
bfd_size_type sz;
|
|
char *msg;
|
|
bfd_boolean ret;
|
|
|
|
if (is->just_syms_flag)
|
|
continue;
|
|
|
|
s = bfd_get_section_by_name (is->the_bfd, ".gnu.warning");
|
|
if (s == NULL)
|
|
continue;
|
|
|
|
sz = s->size;
|
|
msg = xmalloc ((size_t) (sz + 1));
|
|
if (! bfd_get_section_contents (is->the_bfd, s, msg,
|
|
(file_ptr) 0, sz))
|
|
einfo ("%F%B: Can't read contents of section .gnu.warning: %E\n",
|
|
is->the_bfd);
|
|
msg[sz] = '\0';
|
|
ret = link_info.callbacks->warning (&link_info, msg,
|
|
(const char *) NULL,
|
|
is->the_bfd, (asection *) NULL,
|
|
(bfd_vma) 0);
|
|
ASSERT (ret);
|
|
free (msg);
|
|
|
|
/* Clobber the section size, so that we don't waste space
|
|
copying the warning into the output file. If we've already
|
|
sized the output section, adjust its size. The adjustment
|
|
is on rawsize because targets that size sections early will
|
|
have called lang_reset_memory_regions after sizing. */
|
|
if (s->output_section != NULL
|
|
&& s->output_section->rawsize >= s->size)
|
|
s->output_section->rawsize -= s->size;
|
|
|
|
s->size = 0;
|
|
|
|
/* Also set SEC_EXCLUDE, so that local symbols defined in the
|
|
warning section don't get copied to the output. */
|
|
s->flags |= SEC_EXCLUDE | SEC_KEEP;
|
|
}
|
|
}
|
|
|
|
before_allocation_default ();
|
|
|
|
if (!bfd_elf_size_dynsym_hash_dynstr (output_bfd, &link_info))
|
|
einfo ("%P%F: failed to set dynamic section sizes: %E\n");
|
|
}
|
|
|
|
EOF
|
|
fi
|
|
|
|
if test x"$LDEMUL_OPEN_DYNAMIC_ARCHIVE" != xgld"$EMULATION_NAME"_open_dynamic_archive; then
|
|
cat >>e${EMULATION_NAME}.c <<EOF
|
|
|
|
/* Try to open a dynamic archive. This is where we know that ELF
|
|
dynamic libraries have an extension of .so (or .sl on oddball systems
|
|
like hpux). */
|
|
|
|
static bfd_boolean
|
|
gld${EMULATION_NAME}_open_dynamic_archive
|
|
(const char *arch, search_dirs_type *search, lang_input_statement_type *entry)
|
|
{
|
|
const char *filename;
|
|
char *string;
|
|
|
|
if (! entry->is_archive)
|
|
return FALSE;
|
|
|
|
filename = entry->filename;
|
|
|
|
/* This allocates a few bytes too many when EXTRA_SHLIB_EXTENSION
|
|
is defined, but it does not seem worth the headache to optimize
|
|
away those two bytes of space. */
|
|
string = (char *) xmalloc (strlen (search->name)
|
|
+ strlen (filename)
|
|
+ strlen (arch)
|
|
#ifdef EXTRA_SHLIB_EXTENSION
|
|
+ strlen (EXTRA_SHLIB_EXTENSION)
|
|
#endif
|
|
+ sizeof "/lib.so");
|
|
|
|
sprintf (string, "%s/lib%s%s.so", search->name, filename, arch);
|
|
|
|
#ifdef EXTRA_SHLIB_EXTENSION
|
|
/* Try the .so extension first. If that fails build a new filename
|
|
using EXTRA_SHLIB_EXTENSION. */
|
|
if (! ldfile_try_open_bfd (string, entry))
|
|
sprintf (string, "%s/lib%s%s%s", search->name,
|
|
filename, arch, EXTRA_SHLIB_EXTENSION);
|
|
#endif
|
|
|
|
if (! ldfile_try_open_bfd (string, entry))
|
|
{
|
|
free (string);
|
|
return FALSE;
|
|
}
|
|
|
|
entry->filename = string;
|
|
|
|
/* We have found a dynamic object to include in the link. The ELF
|
|
backend linker will create a DT_NEEDED entry in the .dynamic
|
|
section naming this file. If this file includes a DT_SONAME
|
|
entry, it will be used. Otherwise, the ELF linker will just use
|
|
the name of the file. For an archive found by searching, like
|
|
this one, the DT_NEEDED entry should consist of just the name of
|
|
the file, without the path information used to find it. Note
|
|
that we only need to do this if we have a dynamic object; an
|
|
archive will never be referenced by a DT_NEEDED entry.
|
|
|
|
FIXME: This approach--using bfd_elf_set_dt_needed_name--is not
|
|
very pretty. I haven't been able to think of anything that is
|
|
pretty, though. */
|
|
if (bfd_check_format (entry->the_bfd, bfd_object)
|
|
&& (entry->the_bfd->flags & DYNAMIC) != 0)
|
|
{
|
|
ASSERT (entry->is_archive && entry->search_dirs_flag);
|
|
|
|
/* Rather than duplicating the logic above. Just use the
|
|
filename we recorded earlier. */
|
|
|
|
filename = lbasename (entry->filename);
|
|
bfd_elf_set_dt_needed_name (entry->the_bfd, filename);
|
|
}
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
EOF
|
|
fi
|
|
|
|
if test x"$LDEMUL_PLACE_ORPHAN" != xgld"$EMULATION_NAME"_place_orphan; then
|
|
cat >>e${EMULATION_NAME}.c <<EOF
|
|
|
|
/* A variant of lang_output_section_find used by place_orphan. */
|
|
|
|
static lang_output_section_statement_type *
|
|
output_rel_find (asection *sec, int isdyn)
|
|
{
|
|
lang_output_section_statement_type *lookup;
|
|
lang_output_section_statement_type *last = NULL;
|
|
lang_output_section_statement_type *last_alloc = NULL;
|
|
lang_output_section_statement_type *last_rel = NULL;
|
|
lang_output_section_statement_type *last_rel_alloc = NULL;
|
|
int rela = sec->name[4] == 'a';
|
|
|
|
for (lookup = &lang_output_section_statement.head->output_section_statement;
|
|
lookup != NULL;
|
|
lookup = lookup->next)
|
|
{
|
|
if (lookup->constraint != -1
|
|
&& CONST_STRNEQ (lookup->name, ".rel"))
|
|
{
|
|
int lookrela = lookup->name[4] == 'a';
|
|
|
|
/* .rel.dyn must come before all other reloc sections, to suit
|
|
GNU ld.so. */
|
|
if (isdyn)
|
|
break;
|
|
|
|
/* Don't place after .rel.plt as doing so results in wrong
|
|
dynamic tags. */
|
|
if (strcmp (".plt", lookup->name + 4 + lookrela) == 0)
|
|
break;
|
|
|
|
if (rela == lookrela || last_rel == NULL)
|
|
last_rel = lookup;
|
|
if ((rela == lookrela || last_rel_alloc == NULL)
|
|
&& lookup->bfd_section != NULL
|
|
&& (lookup->bfd_section->flags & SEC_ALLOC) != 0)
|
|
last_rel_alloc = lookup;
|
|
}
|
|
|
|
last = lookup;
|
|
if (lookup->bfd_section != NULL
|
|
&& (lookup->bfd_section->flags & SEC_ALLOC) != 0)
|
|
last_alloc = lookup;
|
|
}
|
|
|
|
if (last_rel_alloc)
|
|
return last_rel_alloc;
|
|
|
|
if (last_rel)
|
|
return last_rel;
|
|
|
|
if (last_alloc)
|
|
return last_alloc;
|
|
|
|
return last;
|
|
}
|
|
|
|
/* Place an orphan section. We use this to put random SHF_ALLOC
|
|
sections in the right segment. */
|
|
|
|
static bfd_boolean
|
|
gld${EMULATION_NAME}_place_orphan (asection *s)
|
|
{
|
|
static struct orphan_save hold[] =
|
|
{
|
|
{ ".text",
|
|
SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_CODE,
|
|
0, 0, 0, 0 },
|
|
{ ".rodata",
|
|
SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_DATA,
|
|
0, 0, 0, 0 },
|
|
{ ".data",
|
|
SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_DATA,
|
|
0, 0, 0, 0 },
|
|
{ ".bss",
|
|
SEC_ALLOC,
|
|
0, 0, 0, 0 },
|
|
{ 0,
|
|
SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_DATA,
|
|
0, 0, 0, 0 },
|
|
{ ".interp",
|
|
SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_DATA,
|
|
0, 0, 0, 0 },
|
|
{ ".sdata",
|
|
SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_DATA | SEC_SMALL_DATA,
|
|
0, 0, 0, 0 }
|
|
};
|
|
enum orphan_save_index
|
|
{
|
|
orphan_text = 0,
|
|
orphan_rodata,
|
|
orphan_data,
|
|
orphan_bss,
|
|
orphan_rel,
|
|
orphan_interp,
|
|
orphan_sdata
|
|
};
|
|
static int orphan_init_done = 0;
|
|
struct orphan_save *place;
|
|
const char *secname;
|
|
lang_output_section_statement_type *after;
|
|
lang_output_section_statement_type *os;
|
|
int isdyn = 0;
|
|
int iself = s->owner->xvec->flavour == bfd_target_elf_flavour;
|
|
unsigned int sh_type = iself ? elf_section_type (s) : SHT_NULL;
|
|
|
|
secname = bfd_get_section_name (s->owner, s);
|
|
|
|
if (! link_info.relocatable
|
|
&& link_info.combreloc
|
|
&& (s->flags & SEC_ALLOC))
|
|
{
|
|
if (iself)
|
|
switch (sh_type)
|
|
{
|
|
case SHT_RELA:
|
|
secname = ".rela.dyn";
|
|
isdyn = 1;
|
|
break;
|
|
case SHT_REL:
|
|
secname = ".rel.dyn";
|
|
isdyn = 1;
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
else if (CONST_STRNEQ (secname, ".rel"))
|
|
{
|
|
secname = secname[4] == 'a' ? ".rela.dyn" : ".rel.dyn";
|
|
isdyn = 1;
|
|
}
|
|
}
|
|
|
|
if (isdyn || (!config.unique_orphan_sections && !unique_section_p (s)))
|
|
{
|
|
/* Look through the script to see where to place this section. */
|
|
os = lang_output_section_find (secname);
|
|
|
|
if (os != NULL
|
|
&& (os->bfd_section == NULL
|
|
|| os->bfd_section->flags == 0
|
|
|| (_bfd_elf_match_sections_by_type (output_bfd,
|
|
os->bfd_section,
|
|
s->owner, s)
|
|
&& ((s->flags ^ os->bfd_section->flags)
|
|
& (SEC_LOAD | SEC_ALLOC)) == 0)))
|
|
{
|
|
/* We already have an output section statement with this
|
|
name, and its bfd section, if any, has compatible flags.
|
|
If the section already exists but does not have any flags
|
|
set, then it has been created by the linker, probably as a
|
|
result of a --section-start command line switch. */
|
|
lang_add_section (&os->children, s, os);
|
|
return TRUE;
|
|
}
|
|
}
|
|
|
|
if (!orphan_init_done)
|
|
{
|
|
struct orphan_save *ho;
|
|
for (ho = hold; ho < hold + sizeof (hold) / sizeof (hold[0]); ++ho)
|
|
if (ho->name != NULL)
|
|
{
|
|
ho->os = lang_output_section_find (ho->name);
|
|
if (ho->os != NULL && ho->os->flags == 0)
|
|
ho->os->flags = ho->flags;
|
|
}
|
|
orphan_init_done = 1;
|
|
}
|
|
|
|
/* If this is a final link, then always put .gnu.warning.SYMBOL
|
|
sections into the .text section to get them out of the way. */
|
|
if (link_info.executable
|
|
&& ! link_info.relocatable
|
|
&& CONST_STRNEQ (secname, ".gnu.warning.")
|
|
&& hold[orphan_text].os != NULL)
|
|
{
|
|
lang_add_section (&hold[orphan_text].os->children, s,
|
|
hold[orphan_text].os);
|
|
return TRUE;
|
|
}
|
|
|
|
/* Decide which segment the section should go in based on the
|
|
section name and section flags. We put loadable .note sections
|
|
right after the .interp section, so that the PT_NOTE segment is
|
|
stored right after the program headers where the OS can read it
|
|
in the first page. */
|
|
|
|
place = NULL;
|
|
if ((s->flags & SEC_ALLOC) == 0)
|
|
;
|
|
else if ((s->flags & SEC_LOAD) != 0
|
|
&& ((iself && sh_type == SHT_NOTE)
|
|
|| (!iself && CONST_STRNEQ (secname, ".note"))))
|
|
place = &hold[orphan_interp];
|
|
else if ((s->flags & (SEC_LOAD | SEC_HAS_CONTENTS)) == 0)
|
|
place = &hold[orphan_bss];
|
|
else if ((s->flags & SEC_SMALL_DATA) != 0)
|
|
place = &hold[orphan_sdata];
|
|
else if ((s->flags & SEC_READONLY) == 0)
|
|
place = &hold[orphan_data];
|
|
else if (((iself && (sh_type == SHT_RELA || sh_type == SHT_REL))
|
|
|| (!iself && CONST_STRNEQ (secname, ".rel")))
|
|
&& (s->flags & SEC_LOAD) != 0)
|
|
place = &hold[orphan_rel];
|
|
else if ((s->flags & SEC_CODE) == 0)
|
|
place = &hold[orphan_rodata];
|
|
else
|
|
place = &hold[orphan_text];
|
|
|
|
after = NULL;
|
|
if (place != NULL)
|
|
{
|
|
if (place->os == NULL)
|
|
{
|
|
if (place->name != NULL)
|
|
place->os = lang_output_section_find (place->name);
|
|
else
|
|
place->os = output_rel_find (s, isdyn);
|
|
}
|
|
after = place->os;
|
|
if (after == NULL)
|
|
after = lang_output_section_find_by_flags
|
|
(s, &place->os, _bfd_elf_match_sections_by_type);
|
|
if (after == NULL)
|
|
/* *ABS* is always the first output section statement. */
|
|
after = &lang_output_section_statement.head->output_section_statement;
|
|
}
|
|
|
|
/* Choose a unique name for the section. This will be needed if the
|
|
same section name appears in the input file with different
|
|
loadable or allocatable characteristics. */
|
|
if (bfd_get_section_by_name (output_bfd, secname) != NULL)
|
|
{
|
|
static int count = 1;
|
|
secname = bfd_get_unique_section_name (output_bfd, secname, &count);
|
|
if (secname == NULL)
|
|
einfo ("%F%P: place_orphan failed: %E\n");
|
|
}
|
|
|
|
lang_insert_orphan (s, secname, after, place, NULL, NULL);
|
|
|
|
return TRUE;
|
|
}
|
|
EOF
|
|
fi
|
|
|
|
if test x"$LDEMUL_FINISH" != xgld"$EMULATION_NAME"_finish; then
|
|
cat >>e${EMULATION_NAME}.c <<EOF
|
|
|
|
static void
|
|
gld${EMULATION_NAME}_finish (void)
|
|
{
|
|
bfd_boolean need_layout = bfd_elf_discard_info (output_bfd, &link_info);
|
|
|
|
gld${EMULATION_NAME}_map_segments (need_layout);
|
|
finish_default ();
|
|
}
|
|
EOF
|
|
fi
|
|
|
|
if test x"$LDEMUL_GET_SCRIPT" != xgld"$EMULATION_NAME"_get_script; then
|
|
cat >>e${EMULATION_NAME}.c <<EOF
|
|
|
|
static char *
|
|
gld${EMULATION_NAME}_get_script (int *isfile)
|
|
EOF
|
|
|
|
if test -n "$COMPILE_IN"
|
|
then
|
|
# Scripts compiled in.
|
|
|
|
# sed commands to quote an ld script as a C string.
|
|
sc="-f stringify.sed"
|
|
|
|
cat >>e${EMULATION_NAME}.c <<EOF
|
|
{
|
|
*isfile = 0;
|
|
|
|
if (link_info.relocatable && config.build_constructors)
|
|
return
|
|
EOF
|
|
sed $sc ldscripts/${EMULATION_NAME}.xu >> e${EMULATION_NAME}.c
|
|
echo ' ; else if (link_info.relocatable) return' >> e${EMULATION_NAME}.c
|
|
sed $sc ldscripts/${EMULATION_NAME}.xr >> e${EMULATION_NAME}.c
|
|
echo ' ; else if (!config.text_read_only) return' >> e${EMULATION_NAME}.c
|
|
sed $sc ldscripts/${EMULATION_NAME}.xbn >> e${EMULATION_NAME}.c
|
|
if cmp -s ldscripts/${EMULATION_NAME}.x ldscripts/${EMULATION_NAME}.xn; then : ; else
|
|
echo ' ; else if (!config.magic_demand_paged) return' >> e${EMULATION_NAME}.c
|
|
sed $sc ldscripts/${EMULATION_NAME}.xn >> e${EMULATION_NAME}.c
|
|
fi
|
|
if test -n "$GENERATE_PIE_SCRIPT" ; then
|
|
if test -n "$GENERATE_COMBRELOC_SCRIPT" ; then
|
|
echo ' ; else if (link_info.pie && link_info.combreloc' >> e${EMULATION_NAME}.c
|
|
echo ' && link_info.relro' >> e${EMULATION_NAME}.c
|
|
echo ' && (link_info.flags & DT_BIND_NOW)) return' >> e${EMULATION_NAME}.c
|
|
sed $sc ldscripts/${EMULATION_NAME}.xdw >> e${EMULATION_NAME}.c
|
|
echo ' ; else if (link_info.pie && link_info.combreloc) return' >> e${EMULATION_NAME}.c
|
|
sed $sc ldscripts/${EMULATION_NAME}.xdc >> e${EMULATION_NAME}.c
|
|
fi
|
|
echo ' ; else if (link_info.pie) return' >> e${EMULATION_NAME}.c
|
|
sed $sc ldscripts/${EMULATION_NAME}.xd >> e${EMULATION_NAME}.c
|
|
fi
|
|
if test -n "$GENERATE_SHLIB_SCRIPT" ; then
|
|
if test -n "$GENERATE_COMBRELOC_SCRIPT" ; then
|
|
echo ' ; else if (link_info.shared && link_info.combreloc' >> e${EMULATION_NAME}.c
|
|
echo ' && link_info.relro' >> e${EMULATION_NAME}.c
|
|
echo ' && (link_info.flags & DT_BIND_NOW)) return' >> e${EMULATION_NAME}.c
|
|
sed $sc ldscripts/${EMULATION_NAME}.xsw >> e${EMULATION_NAME}.c
|
|
echo ' ; else if (link_info.shared && link_info.combreloc) return' >> e${EMULATION_NAME}.c
|
|
sed $sc ldscripts/${EMULATION_NAME}.xsc >> e${EMULATION_NAME}.c
|
|
fi
|
|
echo ' ; else if (link_info.shared) return' >> e${EMULATION_NAME}.c
|
|
sed $sc ldscripts/${EMULATION_NAME}.xs >> e${EMULATION_NAME}.c
|
|
fi
|
|
if test -n "$GENERATE_COMBRELOC_SCRIPT" ; then
|
|
echo ' ; else if (link_info.combreloc && link_info.relro' >> e${EMULATION_NAME}.c
|
|
echo ' && (link_info.flags & DT_BIND_NOW)) return' >> e${EMULATION_NAME}.c
|
|
sed $sc ldscripts/${EMULATION_NAME}.xw >> e${EMULATION_NAME}.c
|
|
echo ' ; else if (link_info.combreloc) return' >> e${EMULATION_NAME}.c
|
|
sed $sc ldscripts/${EMULATION_NAME}.xc >> e${EMULATION_NAME}.c
|
|
fi
|
|
echo ' ; else return' >> e${EMULATION_NAME}.c
|
|
sed $sc ldscripts/${EMULATION_NAME}.x >> e${EMULATION_NAME}.c
|
|
echo '; }' >> e${EMULATION_NAME}.c
|
|
|
|
else
|
|
# Scripts read from the filesystem.
|
|
|
|
cat >>e${EMULATION_NAME}.c <<EOF
|
|
{
|
|
*isfile = 1;
|
|
|
|
if (link_info.relocatable && config.build_constructors)
|
|
return "ldscripts/${EMULATION_NAME}.xu";
|
|
else if (link_info.relocatable)
|
|
return "ldscripts/${EMULATION_NAME}.xr";
|
|
else if (!config.text_read_only)
|
|
return "ldscripts/${EMULATION_NAME}.xbn";
|
|
EOF
|
|
if cmp -s ldscripts/${EMULATION_NAME}.x ldscripts/${EMULATION_NAME}.xn; then :
|
|
else
|
|
cat >>e${EMULATION_NAME}.c <<EOF
|
|
else if (!config.magic_demand_paged)
|
|
return "ldscripts/${EMULATION_NAME}.xn";
|
|
EOF
|
|
fi
|
|
if test -n "$GENERATE_PIE_SCRIPT" ; then
|
|
if test -n "$GENERATE_COMBRELOC_SCRIPT" ; then
|
|
cat >>e${EMULATION_NAME}.c <<EOF
|
|
else if (link_info.pie && link_info.combreloc
|
|
&& link_info.relro && (link_info.flags & DT_BIND_NOW))
|
|
return "ldscripts/${EMULATION_NAME}.xdw";
|
|
else if (link_info.pie && link_info.combreloc)
|
|
return "ldscripts/${EMULATION_NAME}.xdc";
|
|
EOF
|
|
fi
|
|
cat >>e${EMULATION_NAME}.c <<EOF
|
|
else if (link_info.pie)
|
|
return "ldscripts/${EMULATION_NAME}.xd";
|
|
EOF
|
|
fi
|
|
if test -n "$GENERATE_SHLIB_SCRIPT" ; then
|
|
if test -n "$GENERATE_COMBRELOC_SCRIPT" ; then
|
|
cat >>e${EMULATION_NAME}.c <<EOF
|
|
else if (link_info.shared && link_info.combreloc
|
|
&& link_info.relro && (link_info.flags & DT_BIND_NOW))
|
|
return "ldscripts/${EMULATION_NAME}.xsw";
|
|
else if (link_info.shared && link_info.combreloc)
|
|
return "ldscripts/${EMULATION_NAME}.xsc";
|
|
EOF
|
|
fi
|
|
cat >>e${EMULATION_NAME}.c <<EOF
|
|
else if (link_info.shared)
|
|
return "ldscripts/${EMULATION_NAME}.xs";
|
|
EOF
|
|
fi
|
|
if test -n "$GENERATE_COMBRELOC_SCRIPT" ; then
|
|
cat >>e${EMULATION_NAME}.c <<EOF
|
|
else if (link_info.combreloc && link_info.relro
|
|
&& (link_info.flags & DT_BIND_NOW))
|
|
return "ldscripts/${EMULATION_NAME}.xw";
|
|
else if (link_info.combreloc)
|
|
return "ldscripts/${EMULATION_NAME}.xc";
|
|
EOF
|
|
fi
|
|
cat >>e${EMULATION_NAME}.c <<EOF
|
|
else
|
|
return "ldscripts/${EMULATION_NAME}.x";
|
|
}
|
|
|
|
EOF
|
|
fi
|
|
fi
|
|
|
|
if test -n "$PARSE_AND_LIST_ARGS_CASES" -o x"$GENERATE_SHLIB_SCRIPT" = xyes; then
|
|
|
|
if test -n "$PARSE_AND_LIST_PROLOGUE" ; then
|
|
cat >>e${EMULATION_NAME}.c <<EOF
|
|
$PARSE_AND_LIST_PROLOGUE
|
|
EOF
|
|
fi
|
|
|
|
cat >>e${EMULATION_NAME}.c <<EOF
|
|
|
|
#define OPTION_DISABLE_NEW_DTAGS (400)
|
|
#define OPTION_ENABLE_NEW_DTAGS (OPTION_DISABLE_NEW_DTAGS + 1)
|
|
#define OPTION_GROUP (OPTION_ENABLE_NEW_DTAGS + 1)
|
|
#define OPTION_EH_FRAME_HDR (OPTION_GROUP + 1)
|
|
#define OPTION_EXCLUDE_LIBS (OPTION_EH_FRAME_HDR + 1)
|
|
#define OPTION_HASH_STYLE (OPTION_EXCLUDE_LIBS + 1)
|
|
|
|
static void
|
|
gld${EMULATION_NAME}_add_options
|
|
(int ns, char **shortopts, int nl, struct option **longopts,
|
|
int nrl ATTRIBUTE_UNUSED, struct option **really_longopts ATTRIBUTE_UNUSED)
|
|
{
|
|
static const char xtra_short[] = "${PARSE_AND_LIST_SHORTOPTS}z:";
|
|
static const struct option xtra_long[] = {
|
|
EOF
|
|
|
|
if test x"$GENERATE_SHLIB_SCRIPT" = xyes; then
|
|
cat >>e${EMULATION_NAME}.c <<EOF
|
|
{"disable-new-dtags", no_argument, NULL, OPTION_DISABLE_NEW_DTAGS},
|
|
{"enable-new-dtags", no_argument, NULL, OPTION_ENABLE_NEW_DTAGS},
|
|
{"eh-frame-hdr", no_argument, NULL, OPTION_EH_FRAME_HDR},
|
|
{"exclude-libs", required_argument, NULL, OPTION_EXCLUDE_LIBS},
|
|
{"hash-style", required_argument, NULL, OPTION_HASH_STYLE},
|
|
{"Bgroup", no_argument, NULL, OPTION_GROUP},
|
|
EOF
|
|
fi
|
|
|
|
if test -n "$PARSE_AND_LIST_LONGOPTS" ; then
|
|
cat >>e${EMULATION_NAME}.c <<EOF
|
|
$PARSE_AND_LIST_LONGOPTS
|
|
EOF
|
|
fi
|
|
|
|
cat >>e${EMULATION_NAME}.c <<EOF
|
|
{NULL, no_argument, NULL, 0}
|
|
};
|
|
|
|
*shortopts = (char *) xrealloc (*shortopts, ns + sizeof (xtra_short));
|
|
memcpy (*shortopts + ns, &xtra_short, sizeof (xtra_short));
|
|
*longopts = (struct option *)
|
|
xrealloc (*longopts, nl * sizeof (struct option) + sizeof (xtra_long));
|
|
memcpy (*longopts + nl, &xtra_long, sizeof (xtra_long));
|
|
}
|
|
|
|
static bfd_boolean
|
|
gld${EMULATION_NAME}_handle_option (int optc)
|
|
{
|
|
switch (optc)
|
|
{
|
|
default:
|
|
return FALSE;
|
|
|
|
EOF
|
|
|
|
if test x"$GENERATE_SHLIB_SCRIPT" = xyes; then
|
|
cat >>e${EMULATION_NAME}.c <<EOF
|
|
case OPTION_DISABLE_NEW_DTAGS:
|
|
link_info.new_dtags = FALSE;
|
|
break;
|
|
|
|
case OPTION_ENABLE_NEW_DTAGS:
|
|
link_info.new_dtags = TRUE;
|
|
break;
|
|
|
|
case OPTION_EH_FRAME_HDR:
|
|
link_info.eh_frame_hdr = TRUE;
|
|
break;
|
|
|
|
case OPTION_GROUP:
|
|
link_info.flags_1 |= (bfd_vma) DF_1_GROUP;
|
|
/* Groups must be self-contained. */
|
|
link_info.unresolved_syms_in_objects = RM_GENERATE_ERROR;
|
|
link_info.unresolved_syms_in_shared_libs = RM_GENERATE_ERROR;
|
|
break;
|
|
|
|
case OPTION_EXCLUDE_LIBS:
|
|
add_excluded_libs (optarg);
|
|
break;
|
|
|
|
case OPTION_HASH_STYLE:
|
|
link_info.emit_hash = FALSE;
|
|
link_info.emit_gnu_hash = FALSE;
|
|
if (strcmp (optarg, "sysv") == 0)
|
|
link_info.emit_hash = TRUE;
|
|
else if (strcmp (optarg, "gnu") == 0)
|
|
link_info.emit_gnu_hash = TRUE;
|
|
else if (strcmp (optarg, "both") == 0)
|
|
{
|
|
link_info.emit_hash = TRUE;
|
|
link_info.emit_gnu_hash = TRUE;
|
|
}
|
|
else
|
|
einfo (_("%P%F: invalid hash style \`%s'\n"), optarg);
|
|
break;
|
|
|
|
case 'z':
|
|
if (strcmp (optarg, "initfirst") == 0)
|
|
link_info.flags_1 |= (bfd_vma) DF_1_INITFIRST;
|
|
else if (strcmp (optarg, "interpose") == 0)
|
|
link_info.flags_1 |= (bfd_vma) DF_1_INTERPOSE;
|
|
else if (strcmp (optarg, "loadfltr") == 0)
|
|
link_info.flags_1 |= (bfd_vma) DF_1_LOADFLTR;
|
|
else if (strcmp (optarg, "nodefaultlib") == 0)
|
|
link_info.flags_1 |= (bfd_vma) DF_1_NODEFLIB;
|
|
else if (strcmp (optarg, "nodelete") == 0)
|
|
link_info.flags_1 |= (bfd_vma) DF_1_NODELETE;
|
|
else if (strcmp (optarg, "nodlopen") == 0)
|
|
link_info.flags_1 |= (bfd_vma) DF_1_NOOPEN;
|
|
else if (strcmp (optarg, "nodump") == 0)
|
|
link_info.flags_1 |= (bfd_vma) DF_1_NODUMP;
|
|
else if (strcmp (optarg, "now") == 0)
|
|
{
|
|
link_info.flags |= (bfd_vma) DF_BIND_NOW;
|
|
link_info.flags_1 |= (bfd_vma) DF_1_NOW;
|
|
}
|
|
else if (strcmp (optarg, "lazy") == 0)
|
|
{
|
|
link_info.flags &= ~(bfd_vma) DF_BIND_NOW;
|
|
link_info.flags_1 &= ~(bfd_vma) DF_1_NOW;
|
|
}
|
|
else if (strcmp (optarg, "origin") == 0)
|
|
{
|
|
link_info.flags |= (bfd_vma) DF_ORIGIN;
|
|
link_info.flags_1 |= (bfd_vma) DF_1_ORIGIN;
|
|
}
|
|
else if (strcmp (optarg, "defs") == 0)
|
|
link_info.unresolved_syms_in_objects = RM_GENERATE_ERROR;
|
|
else if (strcmp (optarg, "muldefs") == 0)
|
|
link_info.allow_multiple_definition = TRUE;
|
|
else if (strcmp (optarg, "combreloc") == 0)
|
|
link_info.combreloc = TRUE;
|
|
else if (strcmp (optarg, "nocombreloc") == 0)
|
|
link_info.combreloc = FALSE;
|
|
else if (strcmp (optarg, "nocopyreloc") == 0)
|
|
link_info.nocopyreloc = TRUE;
|
|
else if (strcmp (optarg, "execstack") == 0)
|
|
{
|
|
link_info.execstack = TRUE;
|
|
link_info.noexecstack = FALSE;
|
|
}
|
|
else if (strcmp (optarg, "noexecstack") == 0)
|
|
{
|
|
link_info.noexecstack = TRUE;
|
|
link_info.execstack = FALSE;
|
|
}
|
|
EOF
|
|
|
|
if test -n "$COMMONPAGESIZE"; then
|
|
cat >>e${EMULATION_NAME}.c <<EOF
|
|
else if (strcmp (optarg, "relro") == 0)
|
|
link_info.relro = TRUE;
|
|
else if (strcmp (optarg, "norelro") == 0)
|
|
link_info.relro = FALSE;
|
|
EOF
|
|
fi
|
|
|
|
cat >>e${EMULATION_NAME}.c <<EOF
|
|
else if (CONST_STRNEQ (optarg, "max-page-size="))
|
|
{
|
|
char *end;
|
|
|
|
config.maxpagesize = strtoul (optarg + 14, &end, 0);
|
|
if (*end || (config.maxpagesize & (config.maxpagesize - 1)) != 0)
|
|
einfo (_("%P%F: invalid maxium page size \`%s'\n"),
|
|
optarg + 14);
|
|
ASSERT (default_target != NULL);
|
|
bfd_emul_set_maxpagesize (default_target, config.maxpagesize);
|
|
}
|
|
else if (CONST_STRNEQ (optarg, "common-page-size="))
|
|
{
|
|
char *end;
|
|
config.commonpagesize = strtoul (optarg + 17, &end, 0);
|
|
if (*end
|
|
|| (config.commonpagesize & (config.commonpagesize - 1)) != 0)
|
|
einfo (_("%P%F: invalid common page size \`%s'\n"),
|
|
optarg + 17);
|
|
ASSERT (default_target != NULL);
|
|
bfd_emul_set_commonpagesize (default_target,
|
|
config.commonpagesize);
|
|
}
|
|
/* What about the other Solaris -z options? FIXME. */
|
|
break;
|
|
EOF
|
|
fi
|
|
|
|
if test -n "$PARSE_AND_LIST_ARGS_CASES" ; then
|
|
cat >>e${EMULATION_NAME}.c <<EOF
|
|
$PARSE_AND_LIST_ARGS_CASES
|
|
EOF
|
|
fi
|
|
|
|
cat >>e${EMULATION_NAME}.c <<EOF
|
|
}
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
EOF
|
|
|
|
if test x"$LDEMUL_LIST_OPTIONS" != xgld"$EMULATION_NAME"_list_options; then
|
|
cat >>e${EMULATION_NAME}.c <<EOF
|
|
|
|
static void
|
|
gld${EMULATION_NAME}_list_options (FILE * file)
|
|
{
|
|
EOF
|
|
|
|
if test x"$GENERATE_SHLIB_SCRIPT" = xyes; then
|
|
cat >>e${EMULATION_NAME}.c <<EOF
|
|
fprintf (file, _(" -Bgroup\t\tSelects group name lookup rules for DSO\n"));
|
|
fprintf (file, _(" --disable-new-dtags\tDisable new dynamic tags\n"));
|
|
fprintf (file, _(" --enable-new-dtags\tEnable new dynamic tags\n"));
|
|
fprintf (file, _(" --eh-frame-hdr\tCreate .eh_frame_hdr section\n"));
|
|
fprintf (file, _(" --hash-style=STYLE\tSet hash style to sysv, gnu or both\n"));
|
|
fprintf (file, _(" -z combreloc\t\tMerge dynamic relocs into one section and sort\n"));
|
|
fprintf (file, _(" -z defs\t\tReport unresolved symbols in object files.\n"));
|
|
fprintf (file, _(" -z execstack\t\tMark executable as requiring executable stack\n"));
|
|
fprintf (file, _(" -z initfirst\t\tMark DSO to be initialized first at runtime\n"));
|
|
fprintf (file, _(" -z interpose\t\tMark object to interpose all DSOs but executable\n"));
|
|
fprintf (file, _(" -z lazy\t\tMark object lazy runtime binding (default)\n"));
|
|
fprintf (file, _(" -z loadfltr\t\tMark object requiring immediate process\n"));
|
|
fprintf (file, _(" -z muldefs\t\tAllow multiple definitions\n"));
|
|
fprintf (file, _(" -z nocombreloc\tDon't merge dynamic relocs into one section\n"));
|
|
fprintf (file, _(" -z nocopyreloc\tDon't create copy relocs\n"));
|
|
fprintf (file, _(" -z nodefaultlib\tMark object not to use default search paths\n"));
|
|
fprintf (file, _(" -z nodelete\t\tMark DSO non-deletable at runtime\n"));
|
|
fprintf (file, _(" -z nodlopen\t\tMark DSO not available to dlopen\n"));
|
|
fprintf (file, _(" -z nodump\t\tMark DSO not available to dldump\n"));
|
|
fprintf (file, _(" -z noexecstack\tMark executable as not requiring executable stack\n"));
|
|
EOF
|
|
|
|
if test -n "$COMMONPAGESIZE"; then
|
|
cat >>e${EMULATION_NAME}.c <<EOF
|
|
fprintf (file, _(" -z norelro\t\tDon't create RELRO program header\n"));
|
|
EOF
|
|
fi
|
|
|
|
cat >>e${EMULATION_NAME}.c <<EOF
|
|
fprintf (file, _(" -z now\t\tMark object non-lazy runtime binding\n"));
|
|
fprintf (file, _(" -z origin\t\tMark object requiring immediate \$ORIGIN processing\n\t\t\t at runtime\n"));
|
|
EOF
|
|
|
|
if test -n "$COMMONPAGESIZE"; then
|
|
cat >>e${EMULATION_NAME}.c <<EOF
|
|
fprintf (file, _(" -z relro\t\tCreate RELRO program header\n"));
|
|
EOF
|
|
fi
|
|
|
|
cat >>e${EMULATION_NAME}.c <<EOF
|
|
fprintf (file, _(" -z max-page-size=SIZE\tSet maximum page size to SIZE\n"));
|
|
fprintf (file, _(" -z common-page-size=SIZE\n\t\t\tSet common page size to SIZE\n"));
|
|
fprintf (file, _(" -z KEYWORD\t\tIgnored for Solaris compatibility\n"));
|
|
EOF
|
|
fi
|
|
|
|
if test -n "$PARSE_AND_LIST_OPTIONS" ; then
|
|
cat >>e${EMULATION_NAME}.c <<EOF
|
|
$PARSE_AND_LIST_OPTIONS
|
|
EOF
|
|
fi
|
|
|
|
cat >>e${EMULATION_NAME}.c <<EOF
|
|
}
|
|
EOF
|
|
|
|
if test -n "$PARSE_AND_LIST_EPILOGUE" ; then
|
|
cat >>e${EMULATION_NAME}.c <<EOF
|
|
$PARSE_AND_LIST_EPILOGUE
|
|
EOF
|
|
fi
|
|
fi
|
|
else
|
|
cat >>e${EMULATION_NAME}.c <<EOF
|
|
#define gld${EMULATION_NAME}_add_options NULL
|
|
#define gld${EMULATION_NAME}_handle_option NULL
|
|
EOF
|
|
if test x"$LDEMUL_LIST_OPTIONS" != xgld"$EMULATION_NAME"_list_options; then
|
|
cat >>e${EMULATION_NAME}.c <<EOF
|
|
#define gld${EMULATION_NAME}_list_options NULL
|
|
EOF
|
|
fi
|
|
fi
|
|
|
|
cat >>e${EMULATION_NAME}.c <<EOF
|
|
|
|
struct ld_emulation_xfer_struct ld_${EMULATION_NAME}_emulation =
|
|
{
|
|
${LDEMUL_BEFORE_PARSE-gld${EMULATION_NAME}_before_parse},
|
|
${LDEMUL_SYSLIB-syslib_default},
|
|
${LDEMUL_HLL-hll_default},
|
|
${LDEMUL_AFTER_PARSE-after_parse_default},
|
|
${LDEMUL_AFTER_OPEN-gld${EMULATION_NAME}_after_open},
|
|
${LDEMUL_AFTER_ALLOCATION-after_allocation_default},
|
|
${LDEMUL_SET_OUTPUT_ARCH-set_output_arch_default},
|
|
${LDEMUL_CHOOSE_TARGET-ldemul_default_target},
|
|
${LDEMUL_BEFORE_ALLOCATION-gld${EMULATION_NAME}_before_allocation},
|
|
${LDEMUL_GET_SCRIPT-gld${EMULATION_NAME}_get_script},
|
|
"${EMULATION_NAME}",
|
|
"${OUTPUT_FORMAT}",
|
|
${LDEMUL_FINISH-gld${EMULATION_NAME}_finish},
|
|
${LDEMUL_CREATE_OUTPUT_SECTION_STATEMENTS-NULL},
|
|
${LDEMUL_OPEN_DYNAMIC_ARCHIVE-gld${EMULATION_NAME}_open_dynamic_archive},
|
|
${LDEMUL_PLACE_ORPHAN-gld${EMULATION_NAME}_place_orphan},
|
|
${LDEMUL_SET_SYMBOLS-NULL},
|
|
${LDEMUL_PARSE_ARGS-NULL},
|
|
gld${EMULATION_NAME}_add_options,
|
|
gld${EMULATION_NAME}_handle_option,
|
|
${LDEMUL_UNRECOGNIZED_FILE-NULL},
|
|
${LDEMUL_LIST_OPTIONS-gld${EMULATION_NAME}_list_options},
|
|
${LDEMUL_RECOGNIZED_FILE-gld${EMULATION_NAME}_load_symbols},
|
|
${LDEMUL_FIND_POTENTIAL_LIBRARIES-NULL},
|
|
${LDEMUL_NEW_VERS_PATTERN-NULL}
|
|
};
|
|
EOF
|