# This shell script emits a C file. -*- C -*-
# It does some substitutions.
+# This file is now misnamed, because it supports both 32 bit and 64 bit
+# ELF emulations.
+test -z "${ELFSIZE}" && ELFSIZE=32
cat >e${EMULATION_NAME}.c <<EOF
/* This file is is generated by a shell script. DO NOT EDIT! */
-/* 32 bit ELF emulation code for ${EMULATION_NAME}
- Copyright (C) 1991, 93, 94, 95, 1996 Free Software Foundation, Inc.
+/* ${ELFSIZE} bit ELF emulation code for ${EMULATION_NAME}
+ Copyright (C) 1991, 93, 94, 95, 96, 97, 98, 1999
+ Free Software Foundation, Inc.
Written by Steve Chamberlain <sac@cygnus.com>
ELF support by Ian Lance Taylor <ian@cygnus.com>
static void gld${EMULATION_NAME}_stat_needed
PARAMS ((lang_input_statement_type *));
static boolean gld${EMULATION_NAME}_search_needed
- PARAMS ((const char *, const char *));
-static boolean gld${EMULATION_NAME}_try_needed PARAMS ((const char *));
+ PARAMS ((const char *, const char *, int));
+static boolean gld${EMULATION_NAME}_try_needed PARAMS ((const char *, int));
+static void gld${EMULATION_NAME}_vercheck
+ PARAMS ((lang_input_statement_type *));
static void gld${EMULATION_NAME}_before_allocation PARAMS ((void));
static void gld${EMULATION_NAME}_find_statement_assignment
PARAMS ((lang_statement_union_type *));
static void gld${EMULATION_NAME}_find_exp_assignment PARAMS ((etree_type *));
static boolean gld${EMULATION_NAME}_place_orphan
PARAMS ((lang_input_statement_type *, asection *));
-static void gld${EMULATION_NAME}_place_section
- PARAMS ((lang_statement_union_type *));
+static lang_output_section_statement_type *output_rel_find PARAMS ((void));
static char *gld${EMULATION_NAME}_get_script PARAMS ((int *isfile));
static void
{
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. */
+ dynamic libraries have an extension of .so (or .sl on oddball systems
+ like hpux). */
static boolean
gld${EMULATION_NAME}_open_dynamic_archive (arch, search, entry)
filename = entry->filename;
+ /* This allocates a few bytes too many when EXTRA_SHLIB_EXTENSION
+ is defined, but it does not seem worth the headache to optimize
+ away those two bytes of space. */
string = (char *) xmalloc (strlen (search->name)
+ strlen (filename)
+ strlen (arch)
+#ifdef EXTRA_SHLIB_EXTENSION
+ + strlen (EXTRA_SHLIB_EXTENSION)
+#endif
+ sizeof "/lib.so");
sprintf (string, "%s/lib%s%s.so", search->name, filename, arch);
+#ifdef EXTRA_SHLIB_EXTENSION
+ /* Try the .so extension first. If that fails build a new filename
+ using EXTRA_SHLIB_EXTENSION. */
+ if (! ldfile_try_open_bfd (string, entry))
+ sprintf (string, "%s/lib%s%s%s", search->name,
+ filename, arch, EXTRA_SHLIB_EXTENSION);
+#endif
+
if (! ldfile_try_open_bfd (string, entry))
{
free (string);
char *needed_name;
ASSERT (entry->is_archive && entry->search_dirs_flag);
- needed_name = (char *) xmalloc (strlen (filename)
- + strlen (arch)
- + sizeof "lib.so");
- sprintf (needed_name, "lib%s%s.so", filename, arch);
+
+ /* Rather than duplicating the logic above. Just use the
+ filename we recorded earlier.
+
+ First strip off everything before the last '/'. */
+ filename = strrchr (entry->filename, '/');
+ filename++;
+
+ needed_name = (char *) xmalloc (strlen (filename) + 1);
+ strcpy (needed_name, filename);
bfd_elf_set_dt_needed_name (entry->the_bfd, needed_name);
}
return true;
}
+EOF
+if [ "x${host}" = "x${target}" ] ; then
+ case " ${EMULATION_LIBPATH} " in
+ *" ${EMULATION_NAME} "*)
+cat >>e${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. */
+
+static boolean gld${EMULATION_NAME}_check_ld_so_conf
+ PARAMS ((const char *, int));
+
+static boolean
+gld${EMULATION_NAME}_check_ld_so_conf (name, force)
+ const char *name;
+ int force;
+{
+ 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${EMULATION_NAME}_search_needed (ld_so_conf, name, force);
+}
+
+EOF
+ ;;
+ esac
+fi
+cat >>e${EMULATION_NAME}.c <<EOF
+
/* These variables are required to pass information back and forth
- between after_open and check_needed and stat_needed. */
+ 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;
/* 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)
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)
+ 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;
- }
+ const char *lib_path;
+ size_t len;
+ search_dirs_type *search;
+
+ if (gld${EMULATION_NAME}_search_needed (command_line.rpath_link,
+ l->name, force))
+ break;
+ if (gld${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${EMULATION_NAME}_search_needed (lib_path, l->name,
+ force))
+ break;
+ }
EOF
if [ "x${host}" = "x${target}" ] ; then
+ case " ${EMULATION_LIBPATH} " in
+ *" ${EMULATION_NAME} "*)
cat >>e${EMULATION_NAME}.c <<EOF
- lib_path = (const char *) getenv ("LD_LIBRARY_PATH");
- if (gld${EMULATION_NAME}_search_needed (lib_path, l->name))
- continue;
+ lib_path = (const char *) getenv ("LD_LIBRARY_PATH");
+ if (gld${EMULATION_NAME}_search_needed (lib_path, l->name, force))
+ break;
EOF
+ ;;
+ esac
fi
cat >>e${EMULATION_NAME}.c <<EOF
- len = strlen (l->name);
- for (search = search_head; search != NULL; search = search->next)
- {
- char *filename;
-
- if (search->cmdline)
- continue;
- filename = (char *) xmalloc (strlen (search->name) + len + 2);
- sprintf (filename, "%s/%s", search->name, l->name);
- if (gld${EMULATION_NAME}_try_needed (filename))
+ 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${EMULATION_NAME}_try_needed (filename, force))
+ break;
+ free (filename);
+ }
+ if (search != NULL)
break;
- free (filename);
+EOF
+if [ "x${host}" = "x${target}" ] ; then
+ case " ${EMULATION_LIBPATH} " in
+ *" ${EMULATION_NAME} "*)
+cat >>e${EMULATION_NAME}.c <<EOF
+ if (gld${EMULATION_NAME}_check_ld_so_conf (l->name, force))
+ break;
+EOF
+ ;;
+ esac
+fi
+cat >>e${EMULATION_NAME}.c <<EOF
}
- if (search != NULL)
+
+ if (force < 2)
continue;
- einfo ("%P: warning: %s, needed by %B, not found\n",
+ einfo ("%P: warning: %s, needed by %B, not found (try using --rpath)\n",
l->name, l->by);
}
}
/* Search for a needed file in a path. */
static boolean
-gld${EMULATION_NAME}_search_needed (path, name)
+gld${EMULATION_NAME}_search_needed (path, name, force)
const char *path;
const char *name;
+ int force;
{
const char *s;
size_t len;
}
strcpy (sset, name);
- if (gld${EMULATION_NAME}_try_needed (filename))
+ if (gld${EMULATION_NAME}_try_needed (filename, force))
return true;
free (filename);
}
/* This function is called for each possible name for a dynamic object
- named by a DT_NEEDED entry. */
+ named by a DT_NEEDED entry. The FORCE parameter indicates whether
+ to skip the check for a conflicting version. */
static boolean
-gld${EMULATION_NAME}_try_needed (name)
+gld${EMULATION_NAME}_try_needed (name, force)
const char *name;
+ int force;
{
bfd *abfd;
return false;
}
+ /* 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. */
+
+ if (! force)
+ {
+ struct bfd_link_needed_list *needed;
+
+ if (! bfd_elf_get_bfd_needed_list (abfd, &needed))
+ einfo ("%F%P:%B: bfd_elf_get_bfd_needed_list failed: %E\n", abfd);
+
+ if (needed != NULL)
+ {
+ global_vercheck_needed = needed;
+ global_vercheck_failed = false;
+ lang_for_each_input_file (gld${EMULATION_NAME}_vercheck);
+ if (global_vercheck_failed)
+ {
+ (void) 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)
+ {
+ (void) bfd_close (abfd);
+ return false;
+ }
+ }
+
+EOF
+ ;;
+esac
+cat >>e${EMULATION_NAME}.c <<EOF
+ }
+ }
+
/* We've found a dynamic object matching the DT_NEEDED entry. */
/* We have already checked that there is no other input file of the
gld${EMULATION_NAME}_check_needed (s)
lang_input_statement_type *s;
{
+ if (global_found)
+ return;
+
if (s->filename != NULL
&& strcmp (s->filename, global_needed->name) == 0)
- global_found = true;
- else if (s->search_dirs_flag
- && s->filename != NULL
- && strchr (global_needed->name, '/') == NULL)
+ {
+ 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;
+ }
+ }
+
+ if (s->search_dirs_flag
+ && s->filename != NULL
+ && strchr (global_needed->name, '/') == NULL)
{
const char *f;
f = strrchr (s->filename, '/');
if (f != NULL
&& strcmp (f + 1, global_needed->name) == 0)
- global_found = true;
+ {
+ global_found = true;
+ return;
+ }
}
}
lang_input_statement_type *s;
{
struct stat st;
- const char *f, *g;
+ const char *suffix;
+ const char *soname;
+ const char *f;
if (global_found)
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. */
+ 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);
+}
+
+/* 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 ar checking. This sets GLOBAL_VERCHECK_FAILED if we find
+ a conflicting version. */
+
+static void
+gld${EMULATION_NAME}_vercheck (s)
+ lang_input_statement_type *s;
+{
+ const char *soname, *f;
+ struct bfd_link_needed_list *l;
+
+ if (global_vercheck_failed)
+ return;
+ if (s->the_bfd == NULL
+ || (bfd_get_file_flags (s->the_bfd) & DYNAMIC) == 0)
+ return;
+
+ soname = bfd_elf_get_dt_soname (s->the_bfd);
+ if (soname == NULL)
+ soname = bfd_get_filename (s->the_bfd);
- f = strrchr (s->filename, '/');
+ f = strrchr (soname, '/');
if (f != NULL)
++f;
else
- f = s->filename;
- g = global_needed->name;
+ f = soname;
- while (*f != '\0' && *f == *g)
+ for (l = global_vercheck_needed; l != NULL; l = l->next)
{
- ++f;
- ++g;
- }
+ const char *suffix;
- /* We have now skipped past the identical prefixes. If the
- remainder of both names is nothing but numbers and dots, we issue
- a warning. */
- if (f[strspn (f, "0123456789.")] == '\0'
- && g[strspn (g, "0123456789.")] == '\0')
- einfo ("%P: warning: %s, needed by %B, may conflict with %s\n",
- global_needed->name, global_needed->by, s->filename);
+ if (strcmp (f, l->name) == 0)
+ {
+ /* Probably can't happen, but it's an easy check. */
+ continue;
+ }
+
+ if (strchr (l->name, '/') != NULL)
+ continue;
+
+ suffix = strstr (l->name, ".so.");
+ if (suffix == NULL)
+ continue;
+
+ suffix += sizeof ".so." - 1;
+
+ if (strncmp (f, l->name, suffix - l->name) == 0)
+ {
+ /* Here we know that S is a dynamic object FOO.SO.VER1, and
+ the object we are considering needs a dynamic object
+ FOO.SO.VER2, and VER1 and VER2 are different. This
+ appears to be a version mismatch, so we tell the caller
+ to try a different version of this library. */
+ global_vercheck_failed = true;
+ return;
+ }
+ }
}
/* This is called after the sections have been attached to output
rpath = command_line.rpath;
if (rpath == NULL)
rpath = (const char *) getenv ("LD_RUN_PATH");
- if (! bfd_elf32_size_dynamic_sections (output_bfd,
- command_line.soname,
- rpath,
- command_line.export_dynamic,
- &link_info,
- &sinterp))
+ if (! (bfd_elf${ELFSIZE}_size_dynamic_sections
+ (output_bfd, command_line.soname, rpath,
+ command_line.export_dynamic, 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");
/* Let the user override the dynamic linker we are using. */
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;
-
- if (is->just_syms_flag)
- continue;
-
- s = bfd_get_section_by_name (is->the_bfd, ".reginfo");
- if (s == NULL)
- continue;
-
- if (! found)
- {
- found = true;
- continue;
- }
-
- s->_raw_size = 0;
- s->_cooked_size = 0;
- }
- }
-#endif
}
/* This is called by the before_allocation routine via
case etree_assign:
if (strcmp (exp->assign.dst, ".") != 0)
{
- if (! (bfd_elf32_record_link_assignment
+ if (! (bfd_elf${ELFSIZE}_record_link_assignment
(output_bfd, &link_info, exp->assign.dst,
exp->type.node_class == etree_provide ? true : false)))
einfo ("%P%F: failed to record assignment to %s: %E\n",
break;
case etree_trinary:
- gld${EMULATION_NAME}_find_exp_assignment (exp->trinary.lhs);
+ gld${EMULATION_NAME}_find_exp_assignment (exp->trinary.cond);
gld${EMULATION_NAME}_find_exp_assignment (exp->trinary.lhs);
gld${EMULATION_NAME}_find_exp_assignment (exp->trinary.rhs);
break;
/* Place an orphan section. We use this to put random SHF_ALLOC
sections in the right segment. */
-static asection *hold_section;
-static lang_output_section_statement_type *hold_use;
-static lang_output_section_statement_type *hold_text;
-static lang_output_section_statement_type *hold_data;
-static lang_output_section_statement_type *hold_bss;
-static lang_output_section_statement_type *hold_rel;
+struct orphan_save
+{
+ lang_output_section_statement_type *os;
+ asection **section;
+ lang_statement_union_type **stmt;
+};
/*ARGSUSED*/
static boolean
lang_input_statement_type *file;
asection *s;
{
- lang_output_section_statement_type *place;
- asection *snew, **pps;
+ static struct orphan_save hold_text;
+ static struct orphan_save hold_rodata;
+ static struct orphan_save hold_data;
+ static struct orphan_save hold_bss;
+ static struct orphan_save hold_rel;
+ static struct orphan_save hold_interp;
+ struct orphan_save *place;
lang_statement_list_type *old;
lang_statement_list_type add;
etree_type *address;
const char *secname, *ps;
+ const char *outsecname;
lang_output_section_statement_type *os;
- if ((s->flags & SEC_ALLOC) == 0)
- return false;
+ secname = bfd_get_section_name (s->owner, s);
/* Look through the script to see where to place this section. */
- hold_section = s;
- hold_use = NULL;
- lang_for_each_statement (gld${EMULATION_NAME}_place_section);
+ os = lang_output_section_find (secname);
- if (hold_use != NULL)
+ if (os != NULL
+ && os->bfd_section != NULL
+ && ((s->flags ^ os->bfd_section->flags) & (SEC_LOAD | SEC_ALLOC)) == 0)
{
/* We have already placed a section with this name. */
- wild_doit (&hold_use->children, s, hold_use, file);
+ wild_doit (&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);
+ wild_doit (&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. */
- place = NULL;
- if ((s->flags & SEC_HAS_CONTENTS) == 0
- && hold_bss != NULL)
- place = hold_bss;
+ 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)
+ return false;
+ else if ((s->flags & SEC_ALLOC) == 0)
+ place = NULL;
+ else if ((s->flags & SEC_LOAD) != 0
+ && strncmp (secname, ".note", 4) == 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_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;
+ && (hold_rel.os != NULL
+ || (hold_rel.os = output_rel_find ()) != NULL))
+ place = &hold_rel;
+ else if ((s->flags & SEC_CODE) == 0
+ && (s->flags & SEC_READONLY) != 0
+ && HAVE_SECTION (hold_rodata, ".rodata"))
+ place = &hold_rodata;
else if ((s->flags & SEC_READONLY) != 0
- && hold_text != NULL)
- place = hold_text;
- if (place == NULL)
- return false;
+ && hold_text.os != NULL)
+ place = &hold_text;
+ else
+ place = NULL;
+
+#undef HAVE_SECTION
- /* 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)
+ /* 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 allocateable 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;
- }
+ unsigned int len;
+ char *newname;
+ unsigned int i;
+
+ len = strlen (outsecname);
+ newname = xmalloc (len + 5);
+ strcpy (newname, outsecname);
+ i = 0;
+ do
+ {
+ sprintf (newname + len, "%d", i);
+ ++i;
+ }
+ while (bfd_get_section_by_name (output_bfd, newname) != NULL);
- /* Start building a list of statements for this section. */
- old = stat_ptr;
- stat_ptr = &add;
- lang_list_init (stat_ptr);
+ outsecname = newname;
+ }
- /* 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 (place != NULL)
{
- char *symname;
-
- symname = (char *) xmalloc (ps - secname + sizeof "__start_");
- sprintf (symname, "__start_%s", secname);
- lang_add_assignment (exp_assop ('=', symname,
- exp_nameop (NAME, ".")));
+ /* Start building a list of statements for this section. */
+ 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 = outsecname; *ps != '\0'; ps++)
+ if (! isalnum ((unsigned char) *ps) && *ps != '_')
+ break;
+ if (*ps == '\0' && config.build_constructors)
+ {
+ 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_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 (place != NULL)
{
- char *symname;
+ asection *snew, **pps;
- symname = (char *) xmalloc (ps - secname + sizeof "__stop_");
- sprintf (symname, "__stop_%s", secname);
- lang_add_assignment (exp_assop ('=', symname,
- exp_nameop (NAME, ".")));
- }
+ stat_ptr = &add;
- /* Now stick the new statement list right after PLACE. */
- *add.tail = place->header.next;
- place->header.next = add.head;
+ if (*ps == '\0' && config.build_constructors)
+ {
+ char *symname;
- stat_ptr = old;
+ symname = (char *) xmalloc (ps - outsecname + sizeof "__stop_");
+ sprintf (symname, "__stop_%s", outsecname);
+ lang_add_assignment (exp_assop ('=', symname,
+ exp_nameop (NAME, ".")));
+ }
+ stat_ptr = old;
- return true;
-}
+ snew = os->bfd_section;
+ if (place->os->bfd_section != NULL || place->section != NULL)
+ {
+ /* Shuffle the section to make the output file look neater. */
+ if (place->section == NULL)
+ {
+#if 0
+ /* Finding the end of the list is a little tricky. We
+ make a wild stab at it by comparing section flags. */
+ flagword first_flags = place->os->bfd_section->flags;
+ for (pps = &place->os->bfd_section->next;
+ *pps != NULL && (*pps)->flags == first_flags;
+ pps = &(*pps)->next)
+ ;
+ place->section = pps;
+#else
+ /* Put orphans after the first section on the list. */
+ place->section = &place->os->bfd_section->next;
+#endif
+ }
-static void
-gld${EMULATION_NAME}_place_section (s)
- lang_statement_union_type *s;
-{
- lang_output_section_statement_type *os;
+ /* Unlink the section. */
+ for (pps = &output_bfd->sections; *pps != snew; pps = &(*pps)->next)
+ ;
+ *pps = snew->next;
- if (s->header.type != lang_output_section_statement_enum)
- return;
+ /* Now tack it on to the "place->os" section list. */
+ snew->next = *place->section;
+ *place->section = snew;
+ }
+ place->section = &snew->next; /* Save the end of this list. */
- os = &s->output_section_statement;
+ if (place->stmt == NULL)
+ {
+ /* Put the new statement list right at the head. */
+ *add.tail = place->os->header.next;
+ place->os->header.next = add.head;
+ }
+ else
+ {
+ /* Put it after the last orphan statement we added. */
+ *add.tail = *place->stmt;
+ *place->stmt = add.head;
+ }
+ place->stmt = add.tail; /* Save the end of this list. */
+ }
- if (strcmp (os->name, hold_section->name) == 0)
- hold_use = os;
+ return true;
+}
+
+/* A variant of lang_output_section_find. */
+static lang_output_section_statement_type *
+output_rel_find ()
+{
+ lang_statement_union_type *u;
+ lang_output_section_statement_type *lookup;
- if (strcmp (os->name, ".text") == 0)
- hold_text = os;
- else if (strcmp (os->name, ".data") == 0)
- hold_data = os;
- else if (strcmp (os->name, ".bss") == 0)
- hold_bss = os;
- else if (hold_rel == NULL
- && strncmp (os->name, ".rel", 4) == 0)
- hold_rel = os;
+ for (u = lang_output_section_statement.head;
+ u != (lang_statement_union_type *) NULL;
+ u = lookup->next)
+ {
+ lookup = &u->output_section_statement;
+ if (strncmp (".rel", lookup->name, 4) == 0
+ && lookup->bfd_section != NULL
+ && (lookup->bfd_section->flags & SEC_ALLOC) != 0)
+ {
+ return lookup;
+ }
+ }
+ return (lang_output_section_statement_type *) NULL;
}
static char *
# Scripts compiled in.
# sed commands to quote an ld script as a C string.
-sc='s/["\\]/\\&/g
-s/$/\\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${EMULATION_NAME}.c
+echo ' ; else if (!config.magic_demand_paged) return' >> e${EMULATION_NAME}.c
+sed $sc ldscripts/${EMULATION_NAME}.xn >> e${EMULATION_NAME}.c
+
+if test -n "$GENERATE_SHLIB_SCRIPT" ; then
+echo ' ; else if (link_info.shared) return' >> e${EMULATION_NAME}.c
+sed $sc ldscripts/${EMULATION_NAME}.xs >> 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.
fi
+if test -n "$PARSE_AND_LIST_ARGS" ; then
+cat >>e${EMULATION_NAME}.c <<EOF
+static int gld_${EMULATION_NAME}_parse_args PARAMS ((int, char **));
+static void gld_${EMULATION_NAME}_list_options PARAMS ((FILE * file));
+
+ $PARSE_AND_LIST_ARGS
+EOF
+else
+
+cat >>e${EMULATION_NAME}.c <<EOF
+#define gld_${EMULATION_NAME}_parse_args NULL
+#define gld_${EMULATION_NAME}_list_options NULL
+EOF
+
+fi
+
cat >>e${EMULATION_NAME}.c <<EOF
struct ld_emulation_xfer_struct ld_${EMULATION_NAME}_emulation =
gld${EMULATION_NAME}_get_script,
"${EMULATION_NAME}",
"${OUTPUT_FORMAT}",
- NULL,
- NULL,
+ NULL, /* finish */
+ NULL, /* create output section statements */
gld${EMULATION_NAME}_open_dynamic_archive,
- gld${EMULATION_NAME}_place_orphan
+ gld${EMULATION_NAME}_place_orphan,
+ NULL, /* set_symbols */
+ gld_${EMULATION_NAME}_parse_args,
+ NULL, /* unrecognized_file */
+ gld_${EMULATION_NAME}_list_options,
+ NULL, /* recognized_file */
+ NULL /* find_potential_libraries */
};
EOF
projects / deliverable / binutils-gdb.git / blobdiff