# This file is now misnamed, because it supports both 32 bit and 64 bit
# ELF emulations.
test -z "${ELFSIZE}" && ELFSIZE=32
+if [ -z "$MACHINE" ]; then
+ OUTPUT_ARCH=${ARCH}
+else
+ OUTPUT_ARCH=${ARCH}:${MACHINE}
+fi
cat >e${EMULATION_NAME}.c <<EOF
/* This file is is generated by a shell script. DO NOT EDIT! */
/* ${ELFSIZE} bit ELF emulation code for ${EMULATION_NAME}
- Copyright (C) 1991, 93, 94, 95, 1996 Free Software Foundation, Inc.
+ Copyright 1991, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001,
+ 2002 Free Software Foundation, Inc.
Written by Steve Chamberlain <sac@cygnus.com>
ELF support by Ian Lance Taylor <ian@cygnus.com>
#include "bfd.h"
#include "sysdep.h"
-
-#include <ctype.h>
+#include "libiberty.h"
+#include "safe-ctype.h"
#include "bfdlink.h"
#include "ld.h"
#include "ldmain.h"
-#include "ldemul.h"
-#include "ldfile.h"
#include "ldmisc.h"
#include "ldexp.h"
#include "ldlang.h"
+#include "ldfile.h"
+#include "ldemul.h"
#include "ldgram.h"
+#include "elf/common.h"
-static void gld${EMULATION_NAME}_before_parse PARAMS ((void));
-static boolean gld${EMULATION_NAME}_open_dynamic_archive
- PARAMS ((const char *, search_dirs_type *, lang_input_statement_type *));
-static void gld${EMULATION_NAME}_after_open PARAMS ((void));
-static void gld${EMULATION_NAME}_check_needed
+static void gld${EMULATION_NAME}_before_parse
+ PARAMS ((void));
+static void gld${EMULATION_NAME}_vercheck
PARAMS ((lang_input_statement_type *));
static void gld${EMULATION_NAME}_stat_needed
PARAMS ((lang_input_statement_type *));
+static boolean gld${EMULATION_NAME}_try_needed
+ PARAMS ((const char *, int));
static boolean gld${EMULATION_NAME}_search_needed
- PARAMS ((const char *, const char *));
-static boolean gld${EMULATION_NAME}_try_needed PARAMS ((const char *));
-static void gld${EMULATION_NAME}_before_allocation PARAMS ((void));
+ PARAMS ((const char *, const char *, int));
+static void gld${EMULATION_NAME}_check_needed
+ PARAMS ((lang_input_statement_type *));
+static void gld${EMULATION_NAME}_after_open
+ PARAMS ((void));
+static void gld${EMULATION_NAME}_find_exp_assignment
+ PARAMS ((etree_type *));
static void gld${EMULATION_NAME}_find_statement_assignment
PARAMS ((lang_statement_union_type *));
-static void gld${EMULATION_NAME}_find_exp_assignment PARAMS ((etree_type *));
+static void gld${EMULATION_NAME}_before_allocation
+ PARAMS ((void));
+static boolean gld${EMULATION_NAME}_open_dynamic_archive
+ PARAMS ((const char *, search_dirs_type *, lang_input_statement_type *));
+static lang_output_section_statement_type *output_rel_find
+ PARAMS ((void));
+static asection *output_prev_sec_find
+ PARAMS ((lang_output_section_statement_type *));
static boolean gld${EMULATION_NAME}_place_orphan
PARAMS ((lang_input_statement_type *, asection *));
-static void gld${EMULATION_NAME}_place_section
- PARAMS ((lang_statement_union_type *));
-static char *gld${EMULATION_NAME}_get_script PARAMS ((int *isfile));
+static void gld${EMULATION_NAME}_finish
+ PARAMS ((void));
+static char *gld${EMULATION_NAME}_get_script
+ PARAMS ((int *isfile));
+
+EOF
+
+# Import any needed special functions and/or overrides.
+#
+if test -n "$EXTRA_EM_FILE" ; then
+. ${srcdir}/emultempl/${EXTRA_EM_FILE}.em
+fi
+
+# Functions in this file can be overridden by setting the LDEMUL_* shell
+# variables. If the name of the overriding function is the same as is
+# defined in this file, then don't output this file's version.
+# If a different overriding name is given then output the standard function
+# as presumably it is called from the overriding function.
+#
+if test x"$LDEMUL_BEFORE_PARSE" != xgld"$EMULATION_NAME"_before_parse; then
+cat >>e${EMULATION_NAME}.c <<EOF
static void
-gld${EMULATION_NAME}_before_parse()
+gld${EMULATION_NAME}_before_parse ()
{
- ldfile_output_architecture = bfd_arch_`echo ${ARCH} | sed -e 's/:.*//'`;
+ const bfd_arch_info_type *arch = bfd_scan_arch ("${OUTPUT_ARCH}");
+ if (arch)
+ {
+ ldfile_output_architecture = arch->arch;
+ ldfile_output_machine = arch->mach;
+ ldfile_output_machine_name = arch->printable_name;
+ }
+ else
+ ldfile_output_architecture = bfd_arch_`echo ${ARCH} | sed -e 's/:.*//'`;
config.dynamic_link = ${DYNAMIC_LINK-true};
+ config.has_shared = `if test -n "$GENERATE_SHLIB_SCRIPT" ; then echo true ; else echo false ; fi`;
}
-/* Try to open a dynamic archive. This is where we know that ELF
- dynamic libraries have an extension of .so. */
+EOF
+fi
+
+cat >>e${EMULATION_NAME}.c <<EOF
+
+/* These variables are required to pass information back and forth
+ between after_open and check_needed and stat_needed and vercheck. */
+
+static struct bfd_link_needed_list *global_needed;
+static struct stat global_stat;
+static boolean global_found;
+static struct bfd_link_needed_list *global_vercheck_needed;
+static boolean global_vercheck_failed;
+
+
+/* On Linux, it's possible to have different versions of the same
+ shared library linked against different versions of libc. The
+ dynamic linker somehow tags which libc version to use in
+ /etc/ld.so.cache, and, based on the libc that it sees in the
+ executable, chooses which version of the shared library to use.
+
+ We try to do a similar check here by checking whether this shared
+ library needs any other shared libraries which may conflict with
+ libraries we have already included in the link. If it does, we
+ skip it, and try to find another shared library farther on down the
+ link path.
+
+ This is called via lang_for_each_input_file.
+ GLOBAL_VERCHECK_NEEDED is the list of objects needed by the object
+ which we are checking. This sets GLOBAL_VERCHECK_FAILED if we find
+ a conflicting version. */
+
+static void
+gld${EMULATION_NAME}_vercheck (s)
+ lang_input_statement_type *s;
+{
+ const char *soname;
+ struct bfd_link_needed_list *l;
+
+ if (global_vercheck_failed)
+ return;
+ if (s->the_bfd == NULL
+ || (bfd_get_file_flags (s->the_bfd) & DYNAMIC) == 0)
+ return;
+
+ soname = bfd_elf_get_dt_soname (s->the_bfd);
+ if (soname == NULL)
+ soname = lbasename (bfd_get_filename (s->the_bfd));
+
+ for (l = global_vercheck_needed; l != NULL; l = l->next)
+ {
+ const char *suffix;
+
+ if (strcmp (soname, l->name) == 0)
+ {
+ /* Probably can't happen, but it's an easy check. */
+ continue;
+ }
+
+ if (strchr (l->name, '/') != NULL)
+ continue;
+
+ suffix = strstr (l->name, ".so.");
+ if (suffix == NULL)
+ continue;
+
+ suffix += sizeof ".so." - 1;
+
+ if (strncmp (soname, l->name, suffix - l->name) == 0)
+ {
+ /* Here we know that S is a dynamic object FOO.SO.VER1, and
+ the object we are considering needs a dynamic object
+ FOO.SO.VER2, and VER1 and VER2 are different. This
+ appears to be a version mismatch, so we tell the caller
+ to try a different version of this library. */
+ global_vercheck_failed = true;
+ return;
+ }
+ }
+}
+
+
+/* See if an input file matches a DT_NEEDED entry by running stat on
+ the file. */
+
+static void
+gld${EMULATION_NAME}_stat_needed (s)
+ lang_input_statement_type *s;
+{
+ struct stat st;
+ const char *suffix;
+ const char *soname;
+
+ if (global_found)
+ return;
+ if (s->the_bfd == NULL)
+ return;
+
+ if (bfd_stat (s->the_bfd, &st) != 0)
+ {
+ einfo ("%P:%B: bfd_stat failed: %E\n", s->the_bfd);
+ return;
+ }
+
+ if (st.st_dev == global_stat.st_dev
+ && st.st_ino == global_stat.st_ino)
+ {
+ global_found = true;
+ return;
+ }
+
+ /* We issue a warning if it looks like we are including two
+ different versions of the same shared library. For example,
+ there may be a problem if -lc picks up libc.so.6 but some other
+ shared library has a DT_NEEDED entry of libc.so.5. This is a
+ heuristic test, and it will only work if the name looks like
+ NAME.so.VERSION. FIXME: Depending on file names is error-prone.
+ If we really want to issue warnings about mixing version numbers
+ of shared libraries, we need to find a better way. */
+
+ if (strchr (global_needed->name, '/') != NULL)
+ return;
+ suffix = strstr (global_needed->name, ".so.");
+ if (suffix == NULL)
+ return;
+ suffix += sizeof ".so." - 1;
+
+ soname = bfd_elf_get_dt_soname (s->the_bfd);
+ if (soname == NULL)
+ soname = lbasename (s->filename);
+
+ if (strncmp (soname, global_needed->name, suffix - global_needed->name) == 0)
+ einfo ("%P: warning: %s, needed by %B, may conflict with %s\n",
+ global_needed->name, global_needed->by, soname);
+}
+
+
+/* This function is called for each possible name for a dynamic object
+ named by a DT_NEEDED entry. The FORCE parameter indicates whether
+ to skip the check for a conflicting version. */
static boolean
-gld${EMULATION_NAME}_open_dynamic_archive (arch, search, entry)
- const char *arch;
- search_dirs_type *search;
- lang_input_statement_type *entry;
+gld${EMULATION_NAME}_try_needed (name, force)
+ const char *name;
+ int force;
{
- const char *filename;
- char *string;
+ bfd *abfd;
+ const char *soname;
- if (! entry->is_archive)
+ abfd = bfd_openr (name, bfd_get_target (output_bfd));
+ if (abfd == NULL)
return false;
+ if (! bfd_check_format (abfd, bfd_object))
+ {
+ bfd_close (abfd);
+ return false;
+ }
+ if ((bfd_get_file_flags (abfd) & DYNAMIC) == 0)
+ {
+ bfd_close (abfd);
+ return false;
+ }
- filename = entry->filename;
+ /* Check whether this object would include any conflicting library
+ versions. If FORCE is set, then we skip this check; we use this
+ the second time around, if we couldn't find any compatible
+ instance of the shared library. */
- string = (char *) xmalloc (strlen (search->name)
- + strlen (filename)
- + strlen (arch)
- + sizeof "/lib.so");
+ if (! force)
+ {
+ struct bfd_link_needed_list *needed;
- sprintf (string, "%s/lib%s%s.so", search->name, filename, arch);
+ if (! bfd_elf_get_bfd_needed_list (abfd, &needed))
+ einfo ("%F%P:%B: bfd_elf_get_bfd_needed_list failed: %E\n", abfd);
- if (! ldfile_try_open_bfd (string, entry))
+ if (needed != NULL)
+ {
+ global_vercheck_needed = needed;
+ global_vercheck_failed = false;
+ lang_for_each_input_file (gld${EMULATION_NAME}_vercheck);
+ if (global_vercheck_failed)
+ {
+ bfd_close (abfd);
+ /* Return false to force the caller to move on to try
+ another file on the search path. */
+ return false;
+ }
+
+ /* But wait! It gets much worse. On Linux, if a shared
+ library does not use libc at all, we are supposed to skip
+ it the first time around in case we encounter a shared
+ library later on with the same name which does use the
+ version of libc that we want. This is much too horrible
+ to use on any system other than Linux. */
+
+EOF
+case ${target} in
+ *-*-linux-gnu*)
+ cat >>e${EMULATION_NAME}.c <<EOF
+ {
+ struct bfd_link_needed_list *l;
+
+ for (l = needed; l != NULL; l = l->next)
+ if (strncmp (l->name, "libc.so", 7) == 0)
+ break;
+ if (l == NULL)
+ {
+ bfd_close (abfd);
+ return false;
+ }
+ }
+
+EOF
+ ;;
+esac
+cat >>e${EMULATION_NAME}.c <<EOF
+ }
+ }
+
+ /* We've found a dynamic object matching the DT_NEEDED entry. */
+
+ /* We have already checked that there is no other input file of the
+ same name. We must now check again that we are not including the
+ same file twice. We need to do this because on many systems
+ libc.so is a symlink to, e.g., libc.so.1. The SONAME entry will
+ reference libc.so.1. If we have already included libc.so, we
+ don't want to include libc.so.1 if they are the same file, and we
+ can only check that using stat. */
+
+ if (bfd_stat (abfd, &global_stat) != 0)
+ einfo ("%F%P:%B: bfd_stat failed: %E\n", abfd);
+
+ /* First strip off everything before the last '/'. */
+ soname = lbasename (abfd->filename);
+
+ if (trace_file_tries)
+ info_msg (_("found %s at %s\n"), soname, name);
+
+ global_found = false;
+ lang_for_each_input_file (gld${EMULATION_NAME}_stat_needed);
+ if (global_found)
{
- free (string);
- return false;
+ /* Return true to indicate that we found the file, even though
+ we aren't going to do anything with it. */
+ return true;
}
- entry->filename = string;
+ /* Tell the ELF backend that we don't want the output file to have a
+ DT_NEEDED entry for this file. */
+ bfd_elf_set_dt_needed_name (abfd, "");
- /* 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.
+ /* Tell the ELF backend that the output file needs a DT_NEEDED
+ entry for this file if it is used to resolve the reference in
+ a regular object. */
+ bfd_elf_set_dt_needed_soname (abfd, soname);
- 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)
+ /* 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 boolean
+gld${EMULATION_NAME}_search_needed (path, name, force)
+ const char *path;
+ const char *name;
+ int force;
+{
+ const char *s;
+ size_t len;
+
+ if (name[0] == '/')
+ return gld${EMULATION_NAME}_try_needed (name, force);
+
+ if (path == NULL || *path == '\0')
+ return false;
+ len = strlen (name);
+ while (1)
{
- char *needed_name;
+ char *filename, *sset;
- ASSERT (entry->is_archive && entry->search_dirs_flag);
- needed_name = (char *) xmalloc (strlen (filename)
- + strlen (arch)
- + sizeof "lib.so");
- sprintf (needed_name, "lib%s%s.so", filename, arch);
- bfd_elf_set_dt_needed_name (entry->the_bfd, needed_name);
+ s = strchr (path, ':');
+ 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);
+
+ if (gld${EMULATION_NAME}_try_needed (filename, force))
+ return true;
+
+ free (filename);
+
+ if (*s == '\0')
+ break;
+ path = s + 1;
}
- return true;
+ return false;
}
EOF
if [ "x${host}" = "x${target}" ] ; then
- if [ "x${DEFAULT_EMULATION}" = "x${EMULATION_NAME}" ] ; then
-cat >>e${EMULATION_NAME}.c <<EOF
+ case " ${EMULATION_LIBPATH} " in
+ *" ${EMULATION_NAME} "*)
+ case ${target} in
+ *-*-linux-gnu*)
+ cat >>e${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, but we check it on other systems anyhow. */
+ only meaningful on Linux. */
-static boolean gld${EMULATION_NAME}_check_ld_so_conf PARAMS ((const char *));
+static boolean gld${EMULATION_NAME}_check_ld_so_conf
+ PARAMS ((const char *, int));
static boolean
-gld${EMULATION_NAME}_check_ld_so_conf (name)
+gld${EMULATION_NAME}_check_ld_so_conf (name, force)
const char *name;
+ int force;
{
static boolean initialized;
static char *ld_so_conf;
if (ld_so_conf == NULL)
return false;
- return gld${EMULATION_NAME}_search_needed (ld_so_conf, name);
+ return gld${EMULATION_NAME}_search_needed (ld_so_conf, name, force);
}
EOF
- fi
+ # Linux
+ ;;
+ esac
+ esac
fi
cat >>e${EMULATION_NAME}.c <<EOF
-/* These variables are required to pass information back and forth
- between after_open and check_needed and stat_needed. */
+/* See if an input file matches a DT_NEEDED entry by name. */
-static struct bfd_link_needed_list *global_needed;
-static struct stat global_stat;
-static boolean global_found;
+static void
+gld${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${EMULATION_NAME}.c <<EOF
/* This is called after all the input files have been opened. */
for (l = needed; l != NULL; l = l->next)
{
struct bfd_link_needed_list *ll;
- const char *lib_path;
- size_t len;
- search_dirs_type *search;
+ int force;
/* If we've already seen this file, skip it. */
for (ll = needed; ll != l; ll = ll->next)
if (global_found)
continue;
+ if (trace_file_tries)
+ info_msg (_("%s needed by %B\n"), l->name, l->by);
+
/* We need to find this file and include the symbol table. We
want to search for the file in the same way that the dynamic
linker will search. That means that we want to use
rpath_link, rpath, then the environment variable
- LD_LIBRARY_PATH (native only), then the linker script
- LIB_SEARCH_DIRS. We do not search using the -L arguments. */
- if (gld${EMULATION_NAME}_search_needed (command_line.rpath_link,
- l->name))
- continue;
- if (gld${EMULATION_NAME}_search_needed (command_line.rpath, l->name))
- continue;
- if (command_line.rpath_link == NULL
- && command_line.rpath == NULL)
+ LD_LIBRARY_PATH (native only), then the DT_RPATH/DT_RUNPATH
+ entries (native only), then the linker script LIB_SEARCH_DIRS.
+ We do not search using the -L arguments.
+
+ We search twice. The first time, we skip objects which may
+ introduce version mismatches. The second time, we force
+ their use. See gld${EMULATION_NAME}_vercheck comment. */
+ for (force = 0; force < 2; force++)
{
- lib_path = (const char *) getenv ("LD_RUN_PATH");
- if (gld${EMULATION_NAME}_search_needed (lib_path, l->name))
- continue;
- }
+ size_t len;
+ search_dirs_type *search;
EOF
if [ "x${host}" = "x${target}" ] ; then
- if [ "x${DEFAULT_EMULATION}" = "x${EMULATION_NAME}" ] ; then
+ case " ${EMULATION_LIBPATH} " in
+ *" ${EMULATION_NAME} "*)
cat >>e${EMULATION_NAME}.c <<EOF
- lib_path = (const char *) getenv ("LD_LIBRARY_PATH");
- if (gld${EMULATION_NAME}_search_needed (lib_path, l->name))
- continue;
+ const char *lib_path;
+ struct bfd_link_needed_list *rp;
+ int found;
EOF
- fi
+ ;;
+ esac
fi
cat >>e${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${EMULATION_NAME}_try_needed (filename))
+ if (gld${EMULATION_NAME}_search_needed (command_line.rpath_link,
+ l->name, force))
break;
- free (filename);
- }
- if (search != NULL)
- continue;
EOF
if [ "x${host}" = "x${target}" ] ; then
- if [ "x${DEFAULT_EMULATION}" = "x${EMULATION_NAME}" ] ; then
+ case " ${EMULATION_LIBPATH} " in
+ *" ${EMULATION_NAME} "*)
cat >>e${EMULATION_NAME}.c <<EOF
- if (gld${EMULATION_NAME}_check_ld_so_conf (l->name))
- continue;
+ if (gld${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${EMULATION_NAME}_search_needed (rp->name,
+ l->name,
+ force));
+ }
+ if (found)
+ break;
+
EOF
- fi
+ ;;
+ esac
+fi
+cat >>e${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 ${target} in
+ *-*-linux-gnu*)
+ cat >>e${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
-
- einfo ("%P: warning: %s, needed by %B, not found\n",
- l->name, l->by);
- }
-}
-
-/* Search for a needed file in a path. */
-
-static boolean
-gld${EMULATION_NAME}_search_needed (path, name)
- const char *path;
- const char *name;
-{
- const char *s;
- size_t len;
-
- if (path == NULL || *path == '\0')
- return false;
- len = strlen (name);
- while (1)
- {
- char *filename, *sset;
-
- s = strchr (path, ':');
- if (s == NULL)
- s = path + strlen (path);
-
- filename = (char *) xmalloc (s - path + len + 2);
- if (s == path)
- sset = filename;
- else
- {
- memcpy (filename, path, s - path);
- filename[s - path] = '/';
- sset = filename + (s - path) + 1;
}
- strcpy (sset, name);
-
- if (gld${EMULATION_NAME}_try_needed (filename))
- return true;
- free (filename);
+ if (force < 2)
+ continue;
- if (*s == '\0')
- break;
- path = s + 1;
+ einfo ("%P: warning: %s, needed by %B, not found (try using -rpath or -rpath-link)\n",
+ l->name, l->by);
}
-
- return false;
}
-/* This function is called for each possible name for a dynamic object
- named by a DT_NEEDED entry. */
-
-static boolean
-gld${EMULATION_NAME}_try_needed (name)
- const char *name;
-{
- bfd *abfd;
-
- abfd = bfd_openr (name, bfd_get_target (output_bfd));
- if (abfd == NULL)
- return false;
- if (! bfd_check_format (abfd, bfd_object))
- {
- (void) bfd_close (abfd);
- return false;
- }
- if ((bfd_get_file_flags (abfd) & DYNAMIC) == 0)
- {
- (void) bfd_close (abfd);
- return false;
- }
-
- /* We've found a dynamic object matching the DT_NEEDED entry. */
-
- /* We have already checked that there is no other input file of the
- same name. We must now check again that we are not including the
- same file twice. We need to do this because on many systems
- libc.so is a symlink to, e.g., libc.so.1. The SONAME entry will
- reference libc.so.1. If we have already included libc.so, we
- don't want to include libc.so.1 if they are the same file, and we
- can only check that using stat. */
-
- if (bfd_stat (abfd, &global_stat) != 0)
- einfo ("%F%P:%B: bfd_stat failed: %E\n", abfd);
- global_found = false;
- lang_for_each_input_file (gld${EMULATION_NAME}_stat_needed);
- if (global_found)
- {
- /* Return true to indicate that we found the file, even though
- we aren't going to do anything with it. */
- return true;
- }
-
- /* Tell the ELF backend that don't want the output file to have a
- DT_NEEDED entry for this file. */
- bfd_elf_set_dt_needed_name (abfd, "");
-
- /* 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);
+EOF
+fi
- return true;
-}
+cat >>e${EMULATION_NAME}.c <<EOF
-/* See if an input file matches a DT_NEEDED entry by name. */
+/* Look through an expression for an assignment statement. */
static void
-gld${EMULATION_NAME}_check_needed (s)
- lang_input_statement_type *s;
+gld${EMULATION_NAME}_find_exp_assignment (exp)
+ etree_type *exp;
{
- if (global_found)
- return;
+ struct bfd_link_hash_entry *h;
- if (s->filename != NULL
- && strcmp (s->filename, global_needed->name) == 0)
+ switch (exp->type.node_class)
{
- global_found = true;
- return;
- }
+ case etree_provide:
+ h = bfd_link_hash_lookup (link_info.hash, exp->assign.dst,
+ false, false, false);
+ if (h == NULL)
+ break;
- if (s->the_bfd != NULL)
- {
- const char *soname;
+ /* We call record_link_assignment even if the symbol is defined.
+ This is because if it is defined by a dynamic object, we
+ actually want to use the value defined by the linker script,
+ not the value from the dynamic object (because we are setting
+ symbols like etext). If the symbol is defined by a regular
+ object, then, as it happens, calling record_link_assignment
+ will do no harm. */
- soname = bfd_elf_get_dt_soname (s->the_bfd);
- if (soname != NULL
- && strcmp (soname, global_needed->name) == 0)
+ /* Fall through. */
+ case etree_assign:
+ if (strcmp (exp->assign.dst, ".") != 0)
{
- global_found = true;
- return;
+ if (! (bfd_elf${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);
}
- }
-
- if (s->search_dirs_flag
- && s->filename != NULL
- && strchr (global_needed->name, '/') == NULL)
- {
- const char *f;
+ gld${EMULATION_NAME}_find_exp_assignment (exp->assign.src);
+ break;
- f = strrchr (s->filename, '/');
- if (f != NULL
- && strcmp (f + 1, global_needed->name) == 0)
- {
- global_found = true;
- return;
- }
+ case etree_binary:
+ gld${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${EMULATION_NAME}_find_exp_assignment (exp->unary.child);
+ break;
+
+ default:
+ break;
}
}
-/* See if an input file matches a DT_NEEDED entry by running stat on
- the file. */
+
+/* This is called by the before_allocation routine via
+ lang_for_each_statement. It locates any assignment statements, and
+ tells the ELF backend about them, in case they are assignments to
+ symbols which are referred to by dynamic objects. */
static void
-gld${EMULATION_NAME}_stat_needed (s)
- lang_input_statement_type *s;
+gld${EMULATION_NAME}_find_statement_assignment (s)
+ lang_statement_union_type *s;
{
- struct stat st;
- const char *suffix;
- const char *soname;
- const char *f;
-
- if (global_found)
- return;
- if (s->the_bfd == NULL)
- return;
+ if (s->header.type == lang_assignment_statement_enum)
+ gld${EMULATION_NAME}_find_exp_assignment (s->assignment_statement.exp);
+}
- if (bfd_stat (s->the_bfd, &st) != 0)
- {
- einfo ("%P:%B: bfd_stat failed: %E\n", s->the_bfd);
- return;
- }
+EOF
- if (st.st_dev == global_stat.st_dev
- && st.st_ino == global_stat.st_ino)
+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)
{
- global_found = true;
- return;
+ sinterp->contents = ${ELF_INTERPRETER_NAME};
+ sinterp->_raw_size = strlen (sinterp->contents) + 1;
}
- /* We issue a warning if it looks like we are including two
- different versions of the same shared library. For example,
- there may be a problem if -lc picks up libc.so.6 but some other
- shared library has a DT_NEEDED entry of libc.so.5. This is a
- hueristic test, and it will only work if the name looks like
- NAME.so.VERSION. FIXME: Depending on file names is error-prone.
- If we really want to issue warnings about mixing version numbers
- of shared libraries, we need to find a better way. */
-
- if (strchr (global_needed->name, '/') != NULL)
- return;
- suffix = strstr (global_needed->name, ".so.");
- if (suffix == NULL)
- return;
- suffix += sizeof ".so." - 1;
-
- soname = bfd_elf_get_dt_soname (s->the_bfd);
- if (soname == NULL)
- soname = s->filename;
-
- f = strrchr (soname, '/');
- if (f != NULL)
- ++f;
+"
else
- f = soname;
-
- if (strncmp (f, global_needed->name, suffix - global_needed->name) == 0)
- einfo ("%P: warning: %s, needed by %B, may conflict with %s\n",
- global_needed->name, global_needed->by, f);
-}
+ ELF_INTERPRETER_SET_DEFAULT=
+ fi
+cat >>e${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. */
rpath = command_line.rpath;
if (rpath == NULL)
rpath = (const char *) getenv ("LD_RUN_PATH");
- if (! bfd_elf${ELFSIZE}_size_dynamic_sections (output_bfd,
- command_line.soname,
- rpath,
- command_line.export_dynamic,
- &link_info,
- &sinterp))
+ if (! (bfd_elf${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");
-
+${ELF_INTERPRETER_SET_DEFAULT}
/* Let the user override the dynamic linker we are using. */
if (command_line.interpreter != NULL
&& sinterp != NULL)
s->_raw_size = 0;
}
}
+}
-#if defined (TARGET_IS_elf32bmip) || defined (TARGET_IS_elf32lmip)
- /* For MIPS ELF the .reginfo section requires special handling.
- Each input section is 24 bytes, and the final output section must
- also be 24 bytes. We handle this by clobbering all but the first
- input section size to 0. The .reginfo section is handled
- specially by the backend code anyhow. */
- {
- boolean found = false;
- LANG_FOR_EACH_INPUT_STATEMENT (is)
- {
- asection *s;
+EOF
+fi
- if (is->just_syms_flag)
- continue;
+if test x"$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);
- s = bfd_get_section_by_name (is->the_bfd, ".reginfo");
- if (s == NULL)
- continue;
+ /* Rather than duplicating the logic above. Just use the
+ filename we recorded earlier. */
- if (! found)
- {
- found = true;
- continue;
- }
+ filename = lbasename (entry->filename);
+ bfd_elf_set_dt_needed_name (entry->the_bfd, filename);
+ }
- s->_raw_size = 0;
- s->_cooked_size = 0;
- }
- }
-#endif
+ return true;
}
-/* 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. */
+EOF
+fi
-static void
-gld${EMULATION_NAME}_find_statement_assignment (s)
- lang_statement_union_type *s;
-{
- if (s->header.type == lang_assignment_statement_enum)
- gld${EMULATION_NAME}_find_exp_assignment (s->assignment_statement.exp);
-}
+if test x"$LDEMUL_PLACE_ORPHAN" != xgld"$EMULATION_NAME"_place_orphan; then
+cat >>e${EMULATION_NAME}.c <<EOF
-/* Look through an expression for an assignment statement. */
+/* A variant of lang_output_section_find. Used by place_orphan. */
-static void
-gld${EMULATION_NAME}_find_exp_assignment (exp)
- etree_type *exp;
+static lang_output_section_statement_type *
+output_rel_find ()
{
- struct bfd_link_hash_entry *h;
+ lang_statement_union_type *u;
+ lang_output_section_statement_type *lookup;
- switch (exp->type.node_class)
+ for (u = lang_output_section_statement.head;
+ u != (lang_statement_union_type *) NULL;
+ u = lookup->next)
{
- case etree_provide:
- h = bfd_link_hash_lookup (link_info.hash, exp->assign.dst,
- false, false, false);
- if (h == NULL)
- break;
-
- /* We call record_link_assignment even if the symbol is defined.
- This is because if it is defined by a dynamic object, we
- actually want to use the value defined by the linker script,
- not the value from the dynamic object (because we are setting
- symbols like etext). If the symbol is defined by a regular
- object, then, as it happens, calling record_link_assignment
- will do no harm. */
-
- /* Fall through. */
- case etree_assign:
- if (strcmp (exp->assign.dst, ".") != 0)
+ lookup = &u->output_section_statement;
+ if (strncmp (".rel", lookup->name, 4) == 0
+ && lookup->bfd_section != NULL
+ && (lookup->bfd_section->flags & SEC_ALLOC) != 0)
{
- if (! (bfd_elf${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);
+ return lookup;
}
- gld${EMULATION_NAME}_find_exp_assignment (exp->assign.src);
- break;
+ }
+ return (lang_output_section_statement_type *) NULL;
+}
- case etree_binary:
- gld${EMULATION_NAME}_find_exp_assignment (exp->binary.lhs);
- gld${EMULATION_NAME}_find_exp_assignment (exp->binary.rhs);
- break;
+/* Find the last output section before given output statement.
+ Used by place_orphan. */
- case etree_trinary:
- gld${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;
+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;
- case etree_unary:
- gld${EMULATION_NAME}_find_exp_assignment (exp->unary.child);
- break;
+ for (u = lang_output_section_statement.head;
+ u != (lang_statement_union_type *) NULL;
+ u = lookup->next)
+ {
+ lookup = &u->output_section_statement;
+ if (lookup == os)
+ return s;
- default:
- break;
+ if (lookup->bfd_section != NULL && lookup->bfd_section->owner != NULL)
+ s = lookup->bfd_section;
}
+
+ return NULL;
}
/* Place an orphan section. We use this to put random SHF_ALLOC
sections in the right segment. */
-static asection *hold_section;
-static lang_output_section_statement_type *hold_use;
-static lang_output_section_statement_type *hold_text;
-static lang_output_section_statement_type *hold_rodata;
-static lang_output_section_statement_type *hold_data;
-static lang_output_section_statement_type *hold_bss;
-static lang_output_section_statement_type *hold_rel;
+struct orphan_save {
+ lang_output_section_statement_type *os;
+ asection **section;
+ lang_statement_union_type **stmt;
+};
-/*ARGSUSED*/
static boolean
gld${EMULATION_NAME}_place_orphan (file, s)
lang_input_statement_type *file;
asection *s;
{
- lang_output_section_statement_type *place;
- asection *snew, **pps;
+ 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, *ps;
+ const char *secname;
+ const char *outsecname;
+ const char *ps = NULL;
lang_output_section_statement_type *os;
- if ((s->flags & SEC_ALLOC) == 0)
- return false;
-
- /* Look through the script to see where to place this section. */
- hold_section = s;
- hold_use = NULL;
- lang_for_each_statement (gld${EMULATION_NAME}_place_section);
+ secname = bfd_get_section_name (s->owner, s);
- if (hold_use != NULL)
+ if (! config.unique_orphan_sections && ! unique_section_p (secname))
{
- /* We have already placed a section with this name. */
- wild_doit (&hold_use->children, s, hold_use, file);
- return true;
+ /* 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;
+ }
}
- secname = bfd_get_section_name (s->owner, s);
+ 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 != NULL)
+ && hold_text.os != NULL)
{
- wild_doit (&hold_text->children, s, hold_text, file);
+ 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. */
+ 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)
+ {
+ if (s->output_section == NULL)
+ s->output_section = bfd_abs_section_ptr;
+ return true;
+ }
+
place = NULL;
- if ((s->flags & SEC_HAS_CONTENTS) == 0
- && hold_bss != NULL)
- place = hold_bss;
+ 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
- && hold_data != NULL)
- place = hold_data;
+ && HAVE_SECTION (hold_data, ".data"))
+ place = &hold_data;
else if (strncmp (secname, ".rel", 4) == 0
- && hold_rel != NULL)
- place = hold_rel;
- else if ((s->flags & SEC_CODE) == 0
- && (s->flags & SEC_READONLY) != 0
- && hold_rodata != NULL)
- place = hold_rodata;
- else if ((s->flags & SEC_READONLY) != 0
- && hold_text != NULL)
- place = hold_text;
- if (place == NULL)
- return false;
+ && (hold_rel.os != NULL
+ || (hold_rel.os = output_rel_find ()) != NULL))
+ {
+ if (! link_info.relocateable && link_info.combreloc)
+ {
+ if (strncmp (secname, ".rela", 5) == 0)
+ os = lang_output_section_find (".rela.dyn");
+ else
+ os = lang_output_section_find (".rel.dyn");
- /* Create the section in the output file, and put it in the right
- place. This shuffling is to make the output file look neater. */
- snew = bfd_make_section (output_bfd, secname);
- if (snew == NULL)
- einfo ("%P%F: output format %s cannot represent section called %s\n",
- output_bfd->xvec->name, secname);
- if (place->bfd_section != NULL)
+ if (os != NULL
+ && os->bfd_section != NULL
+ && ((s->flags ^ os->bfd_section->flags)
+ & (SEC_LOAD | SEC_ALLOC)) == 0)
+ {
+ lang_add_section (&os->children, s, os, file);
+ return true;
+ }
+ }
+ 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. */
+ outsecname = secname;
+ if (bfd_get_section_by_name (output_bfd, outsecname) != NULL)
{
- for (pps = &output_bfd->sections; *pps != snew; pps = &(*pps)->next)
- ;
- *pps = snew->next;
- snew->next = place->bfd_section->next;
- place->bfd_section->next = snew;
+ outsecname = bfd_get_unique_section_name (output_bfd,
+ outsecname,
+ &count);
+ if (outsecname == NULL)
+ einfo ("%F%P: place_orphan failed: %E\n");
}
- /* Start building a list of statements for this section. */
+ /* Start building a list of statements for this section.
+ First save the current statement pointer. */
old = stat_ptr;
- stat_ptr = &add;
- lang_list_init (stat_ptr);
- /* 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' && config.build_constructors)
+ /* 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)
{
- char *symname;
+ stat_ptr = &add;
+ lang_list_init (stat_ptr);
+ }
- symname = (char *) xmalloc (ps - secname + sizeof "__start_");
- sprintf (symname, "__start_%s", secname);
- lang_add_assignment (exp_assop ('=', symname,
- exp_unop (ALIGN_K,
- exp_intop ((bfd_vma) 1
- << s->alignment_power))));
+ 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 = outsecname; *ps != '\0'; ps++)
+ if (! ISALNUM (*ps) && *ps != '_')
+ break;
+ if (*ps == '\0')
+ {
+ char *symname;
+ etree_type *e_align;
+
+ symname = (char *) xmalloc (ps - outsecname + sizeof "__start_");
+ sprintf (symname, "__start_%s", outsecname);
+ 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)
- address = NULL;
- else
+ if (link_info.relocateable || (s->flags & (SEC_LOAD | SEC_ALLOC)) == 0)
address = exp_intop ((bfd_vma) 0);
+ else
+ address = NULL;
- lang_enter_output_section_statement (secname, address, 0,
- (bfd_vma) 0,
- (etree_type *) NULL,
- (etree_type *) NULL,
- (etree_type *) NULL);
+ os = lang_enter_output_section_statement (outsecname, address, 0,
+ (bfd_vma) 0,
+ (etree_type *) NULL,
+ (etree_type *) NULL,
+ (etree_type *) NULL);
- os = lang_output_section_statement_lookup (secname);
- wild_doit (&os->children, s, os, file);
+ lang_add_section (&os->children, s, os, file);
- lang_leave_output_section_statement ((bfd_vma) 0, "*default*");
- stat_ptr = &add;
+ lang_leave_output_section_statement
+ ((bfd_vma) 0, "*default*",
+ (struct lang_output_section_phdr_list *) NULL, "*default*");
- if (*ps == '\0' && config.build_constructors)
+ if (config.build_constructors && *ps == '\0')
{
char *symname;
- symname = (char *) xmalloc (ps - secname + sizeof "__stop_");
- sprintf (symname, "__stop_%s", secname);
+ /* 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 - outsecname + sizeof "__stop_");
+ sprintf (symname, "__stop_%s", outsecname);
lang_add_assignment (exp_assop ('=', symname,
exp_nameop (NAME, ".")));
}
- /* Now stick the new statement list right after PLACE. */
- *add.tail = place->header.next;
- place->header.next = add.head;
-
+ /* Restore the global list pointer. */
stat_ptr = old;
+ if (place != 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${EMULATION_NAME}_place_section (s)
- lang_statement_union_type *s;
+gld${EMULATION_NAME}_finish ()
{
- lang_output_section_statement_type *os;
+ if (bfd_elf${ELFSIZE}_discard_info (output_bfd, &link_info))
+ {
+ lang_reset_memory_regions ();
- if (s->header.type != lang_output_section_statement_enum)
- return;
+ /* Resize the sections. */
+ lang_size_sections (stat_ptr->head, abs_output_section,
+ &stat_ptr->head, 0, (bfd_vma) 0, NULL);
- os = &s->output_section_statement;
-
- if (strcmp (os->name, hold_section->name) == 0)
- hold_use = os;
-
- if (strcmp (os->name, ".text") == 0)
- hold_text = os;
- else if (strcmp (os->name, ".rodata") == 0)
- hold_rodata = os;
- else if (strcmp (os->name, ".data") == 0)
- hold_data = os;
- else if (strcmp (os->name, ".bss") == 0)
- hold_bss = os;
- else if (hold_rel == NULL
- && os->bfd_section != NULL
- && strncmp (os->name, ".rel", 4) == 0)
- hold_rel = os;
+ /* Redo special stuff. */
+ ldemul_after_allocation ();
+
+ /* Do the assignments again. */
+ lang_do_assignments (stat_ptr->head, abs_output_section,
+ (fill_type *) 0, (bfd_vma) 0);
+ }
}
+EOF
+fi
+
+if test x"$LDEMUL_GET_SCRIPT" != xgld"$EMULATION_NAME"_get_script; then
+cat >>e${EMULATION_NAME}.c <<EOF
static char *
-gld${EMULATION_NAME}_get_script(isfile)
+gld${EMULATION_NAME}_get_script (isfile)
int *isfile;
EOF
# Scripts compiled in.
# sed commands to quote an ld script as a C string.
-sc='s/["\\]/\\&/g
-s/$/\\n\\/
-1s/^/"/
-$s/$/n"/
-'
+sc="-f stringify.sed"
cat >>e${EMULATION_NAME}.c <<EOF
-{
+{
*isfile = 0;
if (link_info.relocateable == true && config.build_constructors == true)
- return `sed "$sc" ldscripts/${EMULATION_NAME}.xu`;
- else if (link_info.relocateable == true)
- return `sed "$sc" ldscripts/${EMULATION_NAME}.xr`;
- else if (!config.text_read_only)
- return `sed "$sc" ldscripts/${EMULATION_NAME}.xbn`;
- else if (!config.magic_demand_paged)
- return `sed "$sc" ldscripts/${EMULATION_NAME}.xn`;
- else if (link_info.shared)
- return `sed "$sc" ldscripts/${EMULATION_NAME}.xs`;
- else
- return `sed "$sc" ldscripts/${EMULATION_NAME}.x`;
-}
+ 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
+echo ' ; else if (link_info.shared && link_info.combreloc) return' >> e${EMULATION_NAME}.c
+sed $sc ldscripts/${EMULATION_NAME}.xsc >> e${EMULATION_NAME}.c
+echo ' ; else if (link_info.shared) return' >> e${EMULATION_NAME}.c
+sed $sc ldscripts/${EMULATION_NAME}.xs >> e${EMULATION_NAME}.c
+fi
+echo ' ; else if (link_info.combreloc) return' >> e${EMULATION_NAME}.c
+sed $sc ldscripts/${EMULATION_NAME}.xc >> e${EMULATION_NAME}.c
+echo ' ; else return' >> e${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${EMULATION_NAME}.c <<EOF
-{
+{
*isfile = 1;
if (link_info.relocateable == true && config.build_constructors == true)
else
return "ldscripts/${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_${EMULATION_NAME}_emulation =
+struct ld_emulation_xfer_struct ld_${EMULATION_NAME}_emulation =
{
- gld${EMULATION_NAME}_before_parse,
- syslib_default,
- hll_default,
- after_parse_default,
- gld${EMULATION_NAME}_after_open,
- after_allocation_default,
- set_output_arch_default,
- ldemul_default_target,
- gld${EMULATION_NAME}_before_allocation,
- gld${EMULATION_NAME}_get_script,
+ ${LDEMUL_BEFORE_PARSE-gld${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}",
- NULL,
- NULL,
- gld${EMULATION_NAME}_open_dynamic_archive,
- gld${EMULATION_NAME}_place_orphan
+ ${LDEMUL_FINISH-gld${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
projects / thirdparty / binutils-gdb.git / blobdiff