1760 lines
49 KiB
Plaintext
1760 lines
49 KiB
Plaintext
# $FreeBSD$
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# 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 ${EMULATION_NAME}
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Copyright 1991, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001,
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2002 Free Software Foundation, Inc.
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Written by Steve Chamberlain <sac@cygnus.com>
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ELF support by Ian Lance Taylor <ian@cygnus.com>
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This file is part of GLD, the Gnu Linker.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
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#define TARGET_IS_${EMULATION_NAME}
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#include "bfd.h"
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#include "sysdep.h"
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#include "libiberty.h"
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#include "safe-ctype.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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static void gld${EMULATION_NAME}_before_parse
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PARAMS ((void));
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static void gld${EMULATION_NAME}_vercheck
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PARAMS ((lang_input_statement_type *));
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static void gld${EMULATION_NAME}_stat_needed
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PARAMS ((lang_input_statement_type *));
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static boolean gld${EMULATION_NAME}_try_needed
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PARAMS ((const char *, int));
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static boolean gld${EMULATION_NAME}_search_needed
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PARAMS ((const char *, const char *, int));
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static void gld${EMULATION_NAME}_check_needed
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PARAMS ((lang_input_statement_type *));
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static void gld${EMULATION_NAME}_after_open
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PARAMS ((void));
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static void gld${EMULATION_NAME}_find_exp_assignment
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PARAMS ((etree_type *));
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static void gld${EMULATION_NAME}_find_statement_assignment
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PARAMS ((lang_statement_union_type *));
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static void gld${EMULATION_NAME}_before_allocation
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PARAMS ((void));
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static boolean gld${EMULATION_NAME}_open_dynamic_archive
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PARAMS ((const char *, search_dirs_type *, lang_input_statement_type *));
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static lang_output_section_statement_type *output_rel_find
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PARAMS ((asection *));
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static asection *output_prev_sec_find
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PARAMS ((lang_output_section_statement_type *));
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static boolean gld${EMULATION_NAME}_place_orphan
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PARAMS ((lang_input_statement_type *, asection *));
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static void gld${EMULATION_NAME}_finish
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PARAMS ((void));
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static char *gld${EMULATION_NAME}_get_script
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PARAMS ((int *isfile));
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EOF
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# Import any needed special functions and/or overrides.
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#
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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 ()
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{
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const bfd_arch_info_type *arch = bfd_scan_arch ("${OUTPUT_ARCH}");
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if (arch)
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{
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ldfile_output_architecture = arch->arch;
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ldfile_output_machine = arch->mach;
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ldfile_output_machine_name = arch->printable_name;
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}
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else
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ldfile_output_architecture = 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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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 boolean global_found;
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static struct bfd_link_needed_list *global_vercheck_needed;
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static 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 (s)
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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 (s)
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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)
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return;
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if (s->the_bfd == NULL)
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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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if (st.st_dev == global_stat.st_dev
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&& st.st_ino == global_stat.st_ino)
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{
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global_found = true;
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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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/* 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 boolean
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gld${EMULATION_NAME}_try_needed (name, force)
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const char *name;
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int force;
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{
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bfd *abfd;
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const char *soname;
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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 ${target} in
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*-*-linux-gnu*)
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cat >>e${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 (strncmp (l->name, "libc.so", 7) == 0)
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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${EMULATION_NAME}.c <<EOF
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}
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}
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/* We've found a dynamic object matching the DT_NEEDED entry. */
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/* We have already checked that there is no other input file of the
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same name. We must now check again that we are not including the
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same file twice. We need to do this because on many systems
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libc.so is a symlink to, e.g., libc.so.1. The SONAME entry will
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reference libc.so.1. If we have already included libc.so, we
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don't want to include libc.so.1 if they are the same file, and we
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can only check that using stat. */
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if (bfd_stat (abfd, &global_stat) != 0)
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einfo ("%F%P:%B: bfd_stat failed: %E\n", abfd);
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/* First strip off everything before the last '/'. */
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soname = lbasename (abfd->filename);
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if (trace_file_tries)
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info_msg (_("found %s at %s\n"), soname, name);
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global_found = false;
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lang_for_each_input_file (gld${EMULATION_NAME}_stat_needed);
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if (global_found)
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{
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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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/* Tell the ELF backend that we don't want the output file to have a
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DT_NEEDED entry for this file. */
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bfd_elf_set_dt_needed_name (abfd, "");
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/* Tell the ELF backend that the output file needs a DT_NEEDED
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entry for this file if it is used to resolve the reference in
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a regular object. */
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bfd_elf_set_dt_needed_soname (abfd, soname);
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/* Add this file into the symbol table. */
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if (! bfd_link_add_symbols (abfd, &link_info))
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einfo ("%F%B: could not read symbols: %E\n", abfd);
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return true;
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}
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/* Search for a needed file in a path. */
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static boolean
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gld${EMULATION_NAME}_search_needed (path, name, force)
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const char *path;
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const char *name;
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int force;
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{
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const char *s;
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size_t len;
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if (name[0] == '/')
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return gld${EMULATION_NAME}_try_needed (name, force);
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if (path == NULL || *path == '\0')
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return false;
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len = strlen (name);
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while (1)
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{
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char *filename, *sset;
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s = strchr (path, ':');
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if (s == NULL)
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s = path + strlen (path);
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filename = (char *) xmalloc (s - path + len + 2);
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if (s == path)
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sset = filename;
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else
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{
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memcpy (filename, path, s - path);
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filename[s - path] = '/';
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sset = filename + (s - path) + 1;
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}
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strcpy (sset, name);
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if (gld${EMULATION_NAME}_try_needed (filename, force))
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return true;
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free (filename);
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if (*s == '\0')
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break;
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path = s + 1;
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}
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return false;
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}
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EOF
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if [ "x${host}" = "x${target}" ] ; then
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case " ${EMULATION_LIBPATH} " in
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*" ${EMULATION_NAME} "*)
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case ${target} in
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*-*-freebsd*)
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cat >>e${EMULATION_NAME}.c <<EOF
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/*
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* Read the system search path the FreeBSD way rather than like Linux.
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*/
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#include <elf-hints.h>
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static boolean gld${EMULATION_NAME}_check_ld_elf_hints
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PARAMS ((const char *, int));
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static boolean
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gld${EMULATION_NAME}_check_ld_elf_hints (name, force)
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const char *name;
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int force;
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{
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static boolean initialized;
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static char *ld_elf_hints;
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if (! initialized)
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{
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FILE *f;
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f = fopen (_PATH_ELF_HINTS, FOPEN_RB);
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if (f != NULL)
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{
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struct elfhints_hdr hdr;
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if (fread(&hdr, 1, sizeof(hdr), f) == sizeof(hdr) &&
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hdr.magic == ELFHINTS_MAGIC &&
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hdr.version == 1)
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{
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if (fseek(f, hdr.strtab + hdr.dirlist, SEEK_SET) != -1)
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{
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char *b;
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b = (char *) xmalloc (hdr.dirlistlen + 1);
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if (fread(b, 1, hdr.dirlistlen + 1, f) !=
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hdr.dirlistlen + 1)
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{
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free(b);
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}
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else
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{
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ld_elf_hints = b;
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}
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}
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}
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fclose (f);
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}
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initialized = true;
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}
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if (ld_elf_hints == NULL)
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return false;
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return gld${EMULATION_NAME}_search_needed (ld_elf_hints, name, force);
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}
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EOF
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# FreeBSD
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|
;;
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*-*-linux-gnu*)
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cat >>e${EMULATION_NAME}.c <<EOF
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|
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/* For a native linker, check the file /etc/ld.so.conf for directories
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in which we may find shared libraries. /etc/ld.so.conf is really
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only meaningful on Linux. */
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static boolean gld${EMULATION_NAME}_check_ld_so_conf
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PARAMS ((const char *, int));
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static boolean
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gld${EMULATION_NAME}_check_ld_so_conf (name, force)
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const char *name;
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int force;
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{
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static boolean initialized;
|
|
static char *ld_so_conf;
|
|
|
|
if (! initialized)
|
|
{
|
|
FILE *f;
|
|
|
|
f = fopen ("/etc/ld.so.conf", FOPEN_RT);
|
|
if (f != NULL)
|
|
{
|
|
char *b;
|
|
size_t len, alloc;
|
|
int c;
|
|
|
|
len = 0;
|
|
alloc = 100;
|
|
b = (char *) xmalloc (alloc);
|
|
|
|
while ((c = getc (f)) != EOF)
|
|
{
|
|
if (len + 1 >= alloc)
|
|
{
|
|
alloc *= 2;
|
|
b = (char *) xrealloc (b, alloc);
|
|
}
|
|
if (c != ':'
|
|
&& c != ' '
|
|
&& c != '\t'
|
|
&& c != '\n'
|
|
&& c != ',')
|
|
{
|
|
b[len] = c;
|
|
++len;
|
|
}
|
|
else
|
|
{
|
|
if (len > 0 && b[len - 1] != ':')
|
|
{
|
|
b[len] = ':';
|
|
++len;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (len > 0 && b[len - 1] == ':')
|
|
--len;
|
|
|
|
if (len > 0)
|
|
b[len] = '\0';
|
|
else
|
|
{
|
|
free (b);
|
|
b = NULL;
|
|
}
|
|
|
|
fclose (f);
|
|
|
|
ld_so_conf = b;
|
|
}
|
|
|
|
initialized = true;
|
|
}
|
|
|
|
if (ld_so_conf == NULL)
|
|
return false;
|
|
|
|
return gld${EMULATION_NAME}_search_needed (ld_so_conf, name, force);
|
|
}
|
|
|
|
EOF
|
|
# Linux
|
|
;;
|
|
esac
|
|
esac
|
|
fi
|
|
cat >>e${EMULATION_NAME}.c <<EOF
|
|
|
|
/* See if an input file matches a DT_NEEDED entry by name. */
|
|
|
|
static void
|
|
gld${EMULATION_NAME}_check_needed (s)
|
|
lang_input_statement_type *s;
|
|
{
|
|
if (global_found)
|
|
return;
|
|
|
|
if (s->filename != NULL)
|
|
{
|
|
const char *f;
|
|
|
|
if (strcmp (s->filename, global_needed->name) == 0)
|
|
{
|
|
global_found = true;
|
|
return;
|
|
}
|
|
|
|
if (s->search_dirs_flag)
|
|
{
|
|
f = strrchr (s->filename, '/');
|
|
if (f != NULL
|
|
&& strcmp (f + 1, global_needed->name) == 0)
|
|
{
|
|
global_found = true;
|
|
return;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (s->the_bfd != NULL)
|
|
{
|
|
const char *soname;
|
|
|
|
soname = bfd_elf_get_dt_soname (s->the_bfd);
|
|
if (soname != NULL
|
|
&& strcmp (soname, global_needed->name) == 0)
|
|
{
|
|
global_found = true;
|
|
return;
|
|
}
|
|
}
|
|
}
|
|
|
|
EOF
|
|
|
|
if test x"$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${EMULATION_NAME}_after_open ()
|
|
{
|
|
struct bfd_link_needed_list *needed, *l;
|
|
|
|
/* We only need to worry about this when doing a final link. */
|
|
if (link_info.relocateable || link_info.shared)
|
|
return;
|
|
|
|
/* Get the list of files which appear in DT_NEEDED entries in
|
|
dynamic objects included in the link (often there will be none).
|
|
For each such file, we want to track down the corresponding
|
|
library, and include the symbol table in the link. This is what
|
|
the runtime dynamic linker will do. Tracking the files down here
|
|
permits one dynamic object to include another without requiring
|
|
special action by the person doing the link. Note that the
|
|
needed list can actually grow while we are stepping through this
|
|
loop. */
|
|
needed = bfd_elf_get_needed_list (output_bfd, &link_info);
|
|
for (l = needed; l != NULL; l = l->next)
|
|
{
|
|
struct bfd_link_needed_list *ll;
|
|
int force;
|
|
|
|
/* If we've already seen this file, skip it. */
|
|
for (ll = needed; ll != l; ll = ll->next)
|
|
if (strcmp (ll->name, l->name) == 0)
|
|
break;
|
|
if (ll != l)
|
|
continue;
|
|
|
|
/* See if this file was included in the link explicitly. */
|
|
global_needed = l;
|
|
global_found = false;
|
|
lang_for_each_input_file (gld${EMULATION_NAME}_check_needed);
|
|
if (global_found)
|
|
continue;
|
|
|
|
if (trace_file_tries)
|
|
info_msg (_("%s needed by %B\n"), l->name, l->by);
|
|
|
|
/* 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${EMULATION_NAME}_vercheck comment. */
|
|
for (force = 0; force < 2; force++)
|
|
{
|
|
size_t len;
|
|
search_dirs_type *search;
|
|
EOF
|
|
if [ "x${host}" = "x${target}" ] ; then
|
|
case " ${EMULATION_LIBPATH} " in
|
|
*" ${EMULATION_NAME} "*)
|
|
cat >>e${EMULATION_NAME}.c <<EOF
|
|
const char *lib_path;
|
|
struct bfd_link_needed_list *rp;
|
|
int found;
|
|
EOF
|
|
;;
|
|
esac
|
|
fi
|
|
cat >>e${EMULATION_NAME}.c <<EOF
|
|
|
|
if (gld${EMULATION_NAME}_search_needed (command_line.rpath_link,
|
|
l->name, force))
|
|
break;
|
|
EOF
|
|
if [ "x${host}" = "x${target}" ] ; then
|
|
case " ${EMULATION_LIBPATH} " in
|
|
*" ${EMULATION_NAME} "*)
|
|
cat >>e${EMULATION_NAME}.c <<EOF
|
|
if (gld${EMULATION_NAME}_search_needed (command_line.rpath,
|
|
l->name, force))
|
|
break;
|
|
if (command_line.rpath_link == NULL
|
|
&& command_line.rpath == NULL)
|
|
{
|
|
lib_path = (const char *) getenv ("LD_RUN_PATH");
|
|
if (gld${EMULATION_NAME}_search_needed (lib_path, l->name,
|
|
force))
|
|
break;
|
|
}
|
|
lib_path = (const char *) getenv ("LD_LIBRARY_PATH");
|
|
if (gld${EMULATION_NAME}_search_needed (lib_path, l->name, force))
|
|
break;
|
|
|
|
found = 0;
|
|
rp = bfd_elf_get_runpath_list (output_bfd, &link_info);
|
|
for (; !found && rp != NULL; rp = rp->next)
|
|
{
|
|
found = (rp->by == l->by
|
|
&& gld${EMULATION_NAME}_search_needed (rp->name,
|
|
l->name,
|
|
force));
|
|
}
|
|
if (found)
|
|
break;
|
|
|
|
EOF
|
|
;;
|
|
esac
|
|
fi
|
|
cat >>e${EMULATION_NAME}.c <<EOF
|
|
len = strlen (l->name);
|
|
for (search = search_head; search != NULL; search = search->next)
|
|
{
|
|
char *filename;
|
|
|
|
if (search->cmdline)
|
|
continue;
|
|
filename = (char *) xmalloc (strlen (search->name) + len + 2);
|
|
sprintf (filename, "%s/%s", search->name, l->name);
|
|
if (gld${EMULATION_NAME}_try_needed (filename, force))
|
|
break;
|
|
free (filename);
|
|
}
|
|
if (search != NULL)
|
|
break;
|
|
EOF
|
|
if [ "x${host}" = "x${target}" ] ; then
|
|
case " ${EMULATION_LIBPATH} " in
|
|
*" ${EMULATION_NAME} "*)
|
|
case ${target} in
|
|
*-*-freebsd*)
|
|
cat >>e${EMULATION_NAME}.c <<EOF
|
|
if (gld${EMULATION_NAME}_check_ld_elf_hints (l->name, force))
|
|
break;
|
|
EOF
|
|
;;
|
|
*-*-linux-gnu*)
|
|
cat >>e${EMULATION_NAME}.c <<EOF
|
|
if (gld${EMULATION_NAME}_check_ld_so_conf (l->name, force))
|
|
break;
|
|
EOF
|
|
# Linux
|
|
;;
|
|
esac
|
|
;;
|
|
esac
|
|
fi
|
|
cat >>e${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 (exp)
|
|
etree_type *exp;
|
|
{
|
|
struct bfd_link_hash_entry *h;
|
|
|
|
switch (exp->type.node_class)
|
|
{
|
|
case etree_provide:
|
|
h = bfd_link_hash_lookup (link_info.hash, exp->assign.dst,
|
|
false, false, false);
|
|
if (h == NULL)
|
|
break;
|
|
|
|
/* 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. */
|
|
|
|
/* Fall through. */
|
|
case etree_assign:
|
|
if (strcmp (exp->assign.dst, ".") != 0)
|
|
{
|
|
if (! (bfd_elf${ELFSIZE}_record_link_assignment
|
|
(output_bfd, &link_info, exp->assign.dst,
|
|
exp->type.node_class == etree_provide ? true : false)))
|
|
einfo ("%P%F: failed to record assignment to %s: %E\n",
|
|
exp->assign.dst);
|
|
}
|
|
gld${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${EMULATION_NAME}_find_statement_assignment (s)
|
|
lang_statement_union_type *s;
|
|
{
|
|
if (s->header.type == lang_assignment_statement_enum)
|
|
gld${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 = ${ELF_INTERPRETER_NAME};
|
|
sinterp->_raw_size = strlen (sinterp->contents) + 1;
|
|
}
|
|
|
|
"
|
|
else
|
|
ELF_INTERPRETER_SET_DEFAULT=
|
|
fi
|
|
cat >>e${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${EMULATION_NAME}_before_allocation ()
|
|
{
|
|
const char *rpath;
|
|
asection *sinterp;
|
|
|
|
/* If we are going to make any variable assignments, we need to let
|
|
the ELF backend know about them in case the variables are
|
|
referred to by dynamic objects. */
|
|
lang_for_each_statement (gld${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${ELFSIZE}_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");
|
|
${ELF_INTERPRETER_SET_DEFAULT}
|
|
/* Let the user override the dynamic linker we are using. */
|
|
if (command_line.interpreter != NULL
|
|
&& sinterp != NULL)
|
|
{
|
|
sinterp->contents = (bfd_byte *) command_line.interpreter;
|
|
sinterp->_raw_size = strlen (command_line.interpreter) + 1;
|
|
}
|
|
|
|
/* Look for any sections named .gnu.warning. As a GNU extensions,
|
|
we treat such sections as containing warning messages. We print
|
|
out the warning message, and then zero out the section size so
|
|
that it does not get copied into the output file. */
|
|
|
|
{
|
|
LANG_FOR_EACH_INPUT_STATEMENT (is)
|
|
{
|
|
asection *s;
|
|
bfd_size_type sz;
|
|
char *msg;
|
|
boolean ret;
|
|
|
|
if (is->just_syms_flag)
|
|
continue;
|
|
|
|
s = bfd_get_section_by_name (is->the_bfd, ".gnu.warning");
|
|
if (s == NULL)
|
|
continue;
|
|
|
|
sz = bfd_section_size (is->the_bfd, s);
|
|
msg = xmalloc ((size_t) sz + 1);
|
|
if (! bfd_get_section_contents (is->the_bfd, s, msg, (file_ptr) 0, sz))
|
|
einfo ("%F%B: Can't read contents of section .gnu.warning: %E\n",
|
|
is->the_bfd);
|
|
msg[sz] = '\0';
|
|
ret = link_info.callbacks->warning (&link_info, msg,
|
|
(const char *) NULL,
|
|
is->the_bfd, (asection *) NULL,
|
|
(bfd_vma) 0);
|
|
ASSERT (ret);
|
|
free (msg);
|
|
|
|
/* Clobber the section size, so that we don't waste copying the
|
|
warning into the output file. */
|
|
s->_raw_size = 0;
|
|
}
|
|
}
|
|
}
|
|
|
|
EOF
|
|
fi
|
|
|
|
if test x"$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 boolean
|
|
gld${EMULATION_NAME}_open_dynamic_archive (arch, search, entry)
|
|
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 (sec)
|
|
asection *sec;
|
|
{
|
|
lang_statement_union_type *u;
|
|
lang_output_section_statement_type *lookup;
|
|
lang_output_section_statement_type *last = 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 (u = lang_output_section_statement.head; u; u = lookup->next)
|
|
{
|
|
lookup = &u->output_section_statement;
|
|
if (strncmp (".rel", lookup->name, 4) == 0)
|
|
{
|
|
/* Don't place after .rel.plt as doing so results in wrong
|
|
dynamic tags. Also, place allocated reloc sections before
|
|
non-allocated. */
|
|
int lookrela = lookup->name[4] == 'a';
|
|
|
|
if (strcmp (".plt", lookup->name + 4 + lookrela) == 0
|
|
|| (lookup->bfd_section != NULL
|
|
&& (lookup->bfd_section->flags & SEC_ALLOC) == 0))
|
|
break;
|
|
last = lookup;
|
|
if (rela == lookrela)
|
|
last_rel = lookup;
|
|
if (lookup->bfd_section != NULL
|
|
&& (lookup->bfd_section->flags & SEC_ALLOC) != 0)
|
|
last_rel_alloc = lookup;
|
|
}
|
|
}
|
|
|
|
if (last_rel_alloc)
|
|
return last_rel_alloc;
|
|
|
|
if (last_rel)
|
|
return last_rel;
|
|
|
|
return last;
|
|
}
|
|
|
|
/* Find the last output section before given output statement.
|
|
Used by place_orphan. */
|
|
|
|
static asection *
|
|
output_prev_sec_find (os)
|
|
lang_output_section_statement_type *os;
|
|
{
|
|
asection *s = (asection *) NULL;
|
|
lang_statement_union_type *u;
|
|
lang_output_section_statement_type *lookup;
|
|
|
|
for (u = lang_output_section_statement.head;
|
|
u != (lang_statement_union_type *) NULL;
|
|
u = lookup->next)
|
|
{
|
|
lookup = &u->output_section_statement;
|
|
if (lookup == os)
|
|
return s;
|
|
|
|
if (lookup->bfd_section != NULL && lookup->bfd_section->owner != NULL)
|
|
s = lookup->bfd_section;
|
|
}
|
|
|
|
return NULL;
|
|
}
|
|
|
|
/* Place an orphan section. We use this to put random SHF_ALLOC
|
|
sections in the right segment. */
|
|
|
|
struct orphan_save {
|
|
lang_output_section_statement_type *os;
|
|
asection **section;
|
|
lang_statement_union_type **stmt;
|
|
};
|
|
|
|
static boolean
|
|
gld${EMULATION_NAME}_place_orphan (file, s)
|
|
lang_input_statement_type *file;
|
|
asection *s;
|
|
{
|
|
static struct orphan_save hold_text;
|
|
static struct orphan_save hold_rodata;
|
|
static struct orphan_save hold_data;
|
|
static struct orphan_save hold_bss;
|
|
static struct orphan_save hold_rel;
|
|
static struct orphan_save hold_interp;
|
|
static struct orphan_save hold_sdata;
|
|
static int count = 1;
|
|
struct orphan_save *place;
|
|
lang_statement_list_type *old;
|
|
lang_statement_list_type add;
|
|
etree_type *address;
|
|
const char *secname;
|
|
const char *ps = NULL;
|
|
lang_output_section_statement_type *os;
|
|
int isdyn = 0;
|
|
|
|
secname = bfd_get_section_name (s->owner, s);
|
|
if (! link_info.relocateable
|
|
&& link_info.combreloc
|
|
&& (s->flags & SEC_ALLOC)
|
|
&& strncmp (secname, ".rel", 4) == 0)
|
|
{
|
|
if (secname[4] == 'a')
|
|
secname = ".rela.dyn";
|
|
else
|
|
secname = ".rel.dyn";
|
|
isdyn = 1;
|
|
}
|
|
|
|
if (isdyn || (!config.unique_orphan_sections && !unique_section_p (secname)))
|
|
{
|
|
/* Look through the script to see where to place this section. */
|
|
os = lang_output_section_find (secname);
|
|
|
|
if (os != NULL
|
|
&& (os->bfd_section == NULL
|
|
|| ((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. */
|
|
lang_add_section (&os->children, s, os, file);
|
|
return true;
|
|
}
|
|
}
|
|
|
|
if (hold_text.os == NULL)
|
|
hold_text.os = lang_output_section_find (".text");
|
|
|
|
/* 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.shared
|
|
&& ! link_info.relocateable
|
|
&& strncmp (secname, ".gnu.warning.", sizeof ".gnu.warning." - 1) == 0
|
|
&& hold_text.os != NULL)
|
|
{
|
|
lang_add_section (&hold_text.os->children, s, hold_text.os, file);
|
|
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. */
|
|
#define HAVE_SECTION(hold, name) \
|
|
(hold.os != NULL || (hold.os = lang_output_section_find (name)) != NULL)
|
|
|
|
if ((s->flags & SEC_EXCLUDE) != 0 && !link_info.relocateable)
|
|
{
|
|
if (s->output_section == NULL)
|
|
s->output_section = bfd_abs_section_ptr;
|
|
return true;
|
|
}
|
|
|
|
place = NULL;
|
|
if ((s->flags & SEC_ALLOC) == 0)
|
|
;
|
|
else if ((s->flags & SEC_LOAD) != 0
|
|
&& strncmp (secname, ".note", 5) == 0
|
|
&& HAVE_SECTION (hold_interp, ".interp"))
|
|
place = &hold_interp;
|
|
else if ((s->flags & SEC_HAS_CONTENTS) == 0
|
|
&& HAVE_SECTION (hold_bss, ".bss"))
|
|
place = &hold_bss;
|
|
else if ((s->flags & SEC_SMALL_DATA) != 0
|
|
&& HAVE_SECTION (hold_sdata, ".sdata"))
|
|
place = &hold_sdata;
|
|
else if ((s->flags & SEC_READONLY) == 0
|
|
&& HAVE_SECTION (hold_data, ".data"))
|
|
place = &hold_data;
|
|
else if (strncmp (secname, ".rel", 4) == 0
|
|
&& (s->flags & SEC_LOAD) != 0
|
|
&& (hold_rel.os != NULL
|
|
|| (hold_rel.os = output_rel_find (s)) != NULL))
|
|
place = &hold_rel;
|
|
else if ((s->flags & (SEC_CODE | SEC_READONLY)) == SEC_READONLY
|
|
&& HAVE_SECTION (hold_rodata, ".rodata"))
|
|
place = &hold_rodata;
|
|
else if ((s->flags & (SEC_CODE | SEC_READONLY)) == (SEC_CODE | SEC_READONLY)
|
|
&& hold_text.os != NULL)
|
|
place = &hold_text;
|
|
|
|
#undef HAVE_SECTION
|
|
|
|
/* 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)
|
|
{
|
|
secname = bfd_get_unique_section_name (output_bfd, secname, &count);
|
|
if (secname == NULL)
|
|
einfo ("%F%P: place_orphan failed: %E\n");
|
|
}
|
|
|
|
/* Start building a list of statements for this section.
|
|
First save the current statement pointer. */
|
|
old = stat_ptr;
|
|
|
|
/* If we have found an appropriate place for the output section
|
|
statements for this orphan, add them to our own private list,
|
|
inserting them later into the global statement list. */
|
|
if (place != NULL)
|
|
{
|
|
stat_ptr = &add;
|
|
lang_list_init (stat_ptr);
|
|
}
|
|
|
|
if (config.build_constructors)
|
|
{
|
|
/* If the name of the section is representable in C, then create
|
|
symbols to mark the start and the end of the section. */
|
|
for (ps = secname; *ps != '\0'; ps++)
|
|
if (! ISALNUM (*ps) && *ps != '_')
|
|
break;
|
|
if (*ps == '\0')
|
|
{
|
|
char *symname;
|
|
etree_type *e_align;
|
|
|
|
symname = (char *) xmalloc (ps - secname + sizeof "__start_");
|
|
sprintf (symname, "__start_%s", secname);
|
|
e_align = exp_unop (ALIGN_K,
|
|
exp_intop ((bfd_vma) 1 << s->alignment_power));
|
|
lang_add_assignment (exp_assop ('=', symname, e_align));
|
|
}
|
|
}
|
|
|
|
if (link_info.relocateable || (s->flags & (SEC_LOAD | SEC_ALLOC)) == 0)
|
|
address = exp_intop ((bfd_vma) 0);
|
|
else
|
|
address = NULL;
|
|
|
|
os = lang_enter_output_section_statement (secname, address, 0,
|
|
(bfd_vma) 0,
|
|
(etree_type *) NULL,
|
|
(etree_type *) NULL,
|
|
(etree_type *) NULL);
|
|
|
|
lang_add_section (&os->children, s, os, file);
|
|
|
|
lang_leave_output_section_statement
|
|
((bfd_vma) 0, "*default*",
|
|
(struct lang_output_section_phdr_list *) NULL, NULL);
|
|
|
|
if (config.build_constructors && *ps == '\0')
|
|
{
|
|
char *symname;
|
|
|
|
/* lang_leave_ouput_section_statement resets stat_ptr. Put
|
|
stat_ptr back where we want it. */
|
|
if (place != NULL)
|
|
stat_ptr = &add;
|
|
|
|
symname = (char *) xmalloc (ps - secname + sizeof "__stop_");
|
|
sprintf (symname, "__stop_%s", secname);
|
|
lang_add_assignment (exp_assop ('=', symname,
|
|
exp_nameop (NAME, ".")));
|
|
}
|
|
|
|
/* Restore the global list pointer. */
|
|
stat_ptr = old;
|
|
|
|
if (place != NULL && os->bfd_section != NULL)
|
|
{
|
|
asection *snew, **pps;
|
|
|
|
snew = os->bfd_section;
|
|
|
|
/* Shuffle the bfd section list to make the output file look
|
|
neater. This is really only cosmetic. */
|
|
if (place->section == NULL)
|
|
{
|
|
asection *bfd_section = place->os->bfd_section;
|
|
|
|
/* If the output statement hasn't been used to place
|
|
any input sections (and thus doesn't have an output
|
|
bfd_section), look for the closest prior output statement
|
|
having an output section. */
|
|
if (bfd_section == NULL)
|
|
bfd_section = output_prev_sec_find (place->os);
|
|
|
|
if (bfd_section != NULL && bfd_section != snew)
|
|
place->section = &bfd_section->next;
|
|
}
|
|
|
|
if (place->section != NULL)
|
|
{
|
|
/* Unlink the section. */
|
|
for (pps = &output_bfd->sections; *pps != snew; pps = &(*pps)->next)
|
|
;
|
|
bfd_section_list_remove (output_bfd, pps);
|
|
|
|
/* Now tack it on to the "place->os" section list. */
|
|
bfd_section_list_insert (output_bfd, place->section, snew);
|
|
}
|
|
|
|
/* Save the end of this list. Further ophans of this type will
|
|
follow the one we've just added. */
|
|
place->section = &snew->next;
|
|
|
|
/* The following is non-cosmetic. We try to put the output
|
|
statements in some sort of reasonable order here, because
|
|
they determine the final load addresses of the orphan
|
|
sections. In addition, placing output statements in the
|
|
wrong order may require extra segments. For instance,
|
|
given a typical situation of all read-only sections placed
|
|
in one segment and following that a segment containing all
|
|
the read-write sections, we wouldn't want to place an orphan
|
|
read/write section before or amongst the read-only ones. */
|
|
if (add.head != NULL)
|
|
{
|
|
if (place->stmt == NULL)
|
|
{
|
|
/* Put the new statement list right at the head. */
|
|
*add.tail = place->os->header.next;
|
|
place->os->header.next = add.head;
|
|
}
|
|
else
|
|
{
|
|
/* Put it after the last orphan statement we added. */
|
|
*add.tail = *place->stmt;
|
|
*place->stmt = add.head;
|
|
}
|
|
|
|
/* Fix the global list pointer if we happened to tack our
|
|
new list at the tail. */
|
|
if (*old->tail == add.head)
|
|
old->tail = add.tail;
|
|
|
|
/* Save the end of this list. */
|
|
place->stmt = add.tail;
|
|
}
|
|
}
|
|
|
|
return true;
|
|
}
|
|
EOF
|
|
fi
|
|
|
|
if test x"$LDEMUL_FINISH" != xgld"$EMULATION_NAME"_finish; then
|
|
cat >>e${EMULATION_NAME}.c <<EOF
|
|
|
|
static void
|
|
gld${EMULATION_NAME}_finish ()
|
|
{
|
|
if (bfd_elf${ELFSIZE}_discard_info (output_bfd, &link_info))
|
|
{
|
|
lang_reset_memory_regions ();
|
|
|
|
/* Resize the sections. */
|
|
lang_size_sections (stat_ptr->head, abs_output_section,
|
|
&stat_ptr->head, 0, (bfd_vma) 0, NULL);
|
|
|
|
/* Redo special stuff. */
|
|
ldemul_after_allocation ();
|
|
|
|
/* Do the assignments again. */
|
|
lang_do_assignments (stat_ptr->head, abs_output_section,
|
|
(fill_type *) 0, (bfd_vma) 0);
|
|
}
|
|
}
|
|
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 (isfile)
|
|
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.relocateable == true && config.build_constructors == true)
|
|
return
|
|
EOF
|
|
sed $sc ldscripts/${EMULATION_NAME}.xu >> e${EMULATION_NAME}.c
|
|
echo ' ; else if (link_info.relocateable == true) return' >> e${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_SHLIB_SCRIPT" ; then
|
|
if test -n "$GENERATE_COMBRELOC_SCRIPT" ; then
|
|
echo ' ; else if (link_info.shared && link_info.combreloc) return' >> e${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) 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${EMULATION_NAME}.c <<EOF
|
|
{
|
|
*isfile = 1;
|
|
|
|
if (link_info.relocateable == true && config.build_constructors == true)
|
|
return "ldscripts/${EMULATION_NAME}.xu";
|
|
else if (link_info.relocateable == true)
|
|
return "ldscripts/${EMULATION_NAME}.xr";
|
|
else if (!config.text_read_only)
|
|
return "ldscripts/${EMULATION_NAME}.xbn";
|
|
else if (!config.magic_demand_paged)
|
|
return "ldscripts/${EMULATION_NAME}.xn";
|
|
else if (link_info.shared)
|
|
return "ldscripts/${EMULATION_NAME}.xs";
|
|
else
|
|
return "ldscripts/${EMULATION_NAME}.x";
|
|
}
|
|
|
|
EOF
|
|
fi
|
|
fi
|
|
|
|
if test -n "$PARSE_AND_LIST_ARGS_CASES" -o x"$GENERATE_SHLIB_SCRIPT" = xyes; then
|
|
|
|
if test x"$LDEMUL_PARSE_ARGS" != xgld"$EMULATION_NAME"_parse_args; then
|
|
|
|
if test -n "$PARSE_AND_LIST_PROLOGUE" ; then
|
|
cat >>e${EMULATION_NAME}.c <<EOF
|
|
$PARSE_AND_LIST_PROLOGUE
|
|
EOF
|
|
fi
|
|
|
|
cat >>e${EMULATION_NAME}.c <<EOF
|
|
|
|
#include "getopt.h"
|
|
|
|
#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)
|
|
|
|
static struct option longopts[] =
|
|
{
|
|
EOF
|
|
|
|
if test x"$GENERATE_SHLIB_SCRIPT" = xyes; then
|
|
cat >>e${EMULATION_NAME}.c <<EOF
|
|
/* getopt allows abbreviations, so we do this to stop it from
|
|
treating -d/-e as abbreviations for these options. */
|
|
{"disable-new-dtags", no_argument, NULL, OPTION_DISABLE_NEW_DTAGS},
|
|
{"disable-new-dtags", no_argument, NULL, OPTION_DISABLE_NEW_DTAGS},
|
|
{"enable-new-dtags", no_argument, NULL, OPTION_ENABLE_NEW_DTAGS},
|
|
{"enable-new-dtags", no_argument, NULL, OPTION_ENABLE_NEW_DTAGS},
|
|
{"eh-frame-hdr", no_argument, NULL, OPTION_EH_FRAME_HDR},
|
|
{"Bgroup", no_argument, NULL, OPTION_GROUP},
|
|
{"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}
|
|
};
|
|
|
|
|
|
static int gld${EMULATION_NAME}_parse_args PARAMS ((int, char **));
|
|
|
|
static int
|
|
gld${EMULATION_NAME}_parse_args (argc, argv)
|
|
int argc;
|
|
char ** argv;
|
|
{
|
|
int longind;
|
|
int optc;
|
|
static int prevoptind = -1;
|
|
int prevopterr = opterr;
|
|
int wanterror;
|
|
|
|
if (prevoptind != optind)
|
|
opterr = 0;
|
|
|
|
wanterror = opterr;
|
|
prevoptind = optind;
|
|
|
|
optc = getopt_long_only (argc, argv,
|
|
"-${PARSE_AND_LIST_SHORTOPTS}z:", longopts,
|
|
&longind);
|
|
opterr = prevopterr;
|
|
|
|
switch (optc)
|
|
{
|
|
default:
|
|
if (wanterror)
|
|
xexit (1);
|
|
optind = prevoptind;
|
|
return 0;
|
|
|
|
EOF
|
|
|
|
if test x"$GENERATE_SHLIB_SCRIPT" = xyes; then
|
|
cat >>e${EMULATION_NAME}.c <<EOF
|
|
case OPTION_DISABLE_NEW_DTAGS:
|
|
link_info.new_dtags = false;
|
|
break;
|
|
|
|
case OPTION_ENABLE_NEW_DTAGS:
|
|
link_info.new_dtags = true;
|
|
break;
|
|
|
|
case OPTION_EH_FRAME_HDR:
|
|
link_info.eh_frame_hdr = true;
|
|
break;
|
|
|
|
case OPTION_GROUP:
|
|
link_info.flags_1 |= (bfd_vma) DF_1_GROUP;
|
|
/* Groups must be self-contained. */
|
|
link_info.no_undefined = true;
|
|
break;
|
|
|
|
case 'z':
|
|
if (strcmp (optarg, "initfirst") == 0)
|
|
link_info.flags_1 |= (bfd_vma) DF_1_INITFIRST;
|
|
else if (strcmp (optarg, "interpose") == 0)
|
|
link_info.flags_1 |= (bfd_vma) DF_1_INTERPOSE;
|
|
else if (strcmp (optarg, "loadfltr") == 0)
|
|
link_info.flags_1 |= (bfd_vma) DF_1_LOADFLTR;
|
|
else if (strcmp (optarg, "nodefaultlib") == 0)
|
|
link_info.flags_1 |= (bfd_vma) DF_1_NODEFLIB;
|
|
else if (strcmp (optarg, "nodelete") == 0)
|
|
link_info.flags_1 |= (bfd_vma) DF_1_NODELETE;
|
|
else if (strcmp (optarg, "nodlopen") == 0)
|
|
link_info.flags_1 |= (bfd_vma) DF_1_NOOPEN;
|
|
else if (strcmp (optarg, "nodump") == 0)
|
|
link_info.flags_1 |= (bfd_vma) DF_1_NODUMP;
|
|
else if (strcmp (optarg, "now") == 0)
|
|
{
|
|
link_info.flags |= (bfd_vma) DF_BIND_NOW;
|
|
link_info.flags_1 |= (bfd_vma) DF_1_NOW;
|
|
}
|
|
else if (strcmp (optarg, "origin") == 0)
|
|
{
|
|
link_info.flags |= (bfd_vma) DF_ORIGIN;
|
|
link_info.flags_1 |= (bfd_vma) DF_1_ORIGIN;
|
|
}
|
|
else if (strcmp (optarg, "defs") == 0)
|
|
link_info.no_undefined = true;
|
|
else if (strcmp (optarg, "muldefs") == 0)
|
|
link_info.allow_multiple_definition = true;
|
|
else if (strcmp (optarg, "combreloc") == 0)
|
|
link_info.combreloc = true;
|
|
else if (strcmp (optarg, "nocombreloc") == 0)
|
|
link_info.combreloc = false;
|
|
else if (strcmp (optarg, "nocopyreloc") == 0)
|
|
link_info.nocopyreloc = true;
|
|
/* What about the other Solaris -z options? FIXME. */
|
|
break;
|
|
EOF
|
|
fi
|
|
|
|
if test -n "$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 1;
|
|
}
|
|
|
|
EOF
|
|
fi
|
|
|
|
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 PARAMS ((FILE * file));
|
|
|
|
static void
|
|
gld${EMULATION_NAME}_list_options (file)
|
|
FILE * file;
|
|
{
|
|
EOF
|
|
|
|
if test x"$GENERATE_SHLIB_SCRIPT" = xyes; then
|
|
cat >>e${EMULATION_NAME}.c <<EOF
|
|
fprintf (file, _(" -Bgroup\t\tSelects group name lookup rules for DSO\n"));
|
|
fprintf (file, _(" --disable-new-dtags\tDisable new dynamic tags\n"));
|
|
fprintf (file, _(" --enable-new-dtags\tEnable new dynamic tags\n"));
|
|
fprintf (file, _(" --eh-frame-hdr\tCreate .eh_frame_hdr section\n"));
|
|
fprintf (file, _(" -z combreloc\t\tMerge dynamic relocs into one section and sort\n"));
|
|
fprintf (file, _(" -z defs\t\tDisallows undefined symbols\n"));
|
|
fprintf (file, _(" -z initfirst\t\tMark DSO to be initialized first at runtime\n"));
|
|
fprintf (file, _(" -z interpose\t\tMark object to interpose all DSOs but executable\n"));
|
|
fprintf (file, _(" -z loadfltr\t\tMark object requiring immediate process\n"));
|
|
fprintf (file, _(" -z muldefs\t\tAllow multiple definitions\n"));
|
|
fprintf (file, _(" -z nocombreloc\tDon't merge dynamic relocs into one section\n"));
|
|
fprintf (file, _(" -z nocopyreloc\tDon't create copy relocs\n"));
|
|
fprintf (file, _(" -z nodefaultlib\tMark object not to use default search paths\n"));
|
|
fprintf (file, _(" -z nodelete\t\tMark DSO non-deletable at runtime\n"));
|
|
fprintf (file, _(" -z nodlopen\t\tMark DSO not available to dlopen\n"));
|
|
fprintf (file, _(" -z nodump\t\tMark DSO not available to dldump\n"));
|
|
fprintf (file, _(" -z now\t\tMark object non-lazy runtime binding\n"));
|
|
fprintf (file, _(" -z origin\t\tMark object requiring immediate \$ORIGIN processing\n\t\t\t at runtime\n"));
|
|
fprintf (file, _(" -z KEYWORD\t\tIgnored for Solaris compatibility\n"));
|
|
EOF
|
|
fi
|
|
|
|
if test -n "$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
|
|
$PARSE_AND_LIST_EPILOGUE
|
|
EOF
|
|
fi
|
|
fi
|
|
else
|
|
if test x"$LDEMUL_PARSE_ARGS" != xgld"$EMULATION_NAME"_parse_args; then
|
|
cat >>e${EMULATION_NAME}.c <<EOF
|
|
#define gld${EMULATION_NAME}_parse_args NULL
|
|
EOF
|
|
fi
|
|
if test x"$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},
|
|
${LDEMUL_PARSE_ARGS-gld${EMULATION_NAME}_parse_args},
|
|
${LDEMUL_UNRECOGNIZED_FILE-NULL},
|
|
${LDEMUL_LIST_OPTIONS-gld${EMULATION_NAME}_list_options},
|
|
${LDEMUL_RECOGNIZED_FILE-NULL},
|
|
${LDEMUL_FIND_POTENTIAL_LIBRARIES-NULL},
|
|
${LDEMUL_NEW_VERS_PATTERN-NULL}
|
|
};
|
|
EOF
|