/* ${ELFSIZE} bit ELF emulation code for ${EMULATION_NAME}
Copyright 1991, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001,
- 2002, 2003, 2004, 2005 Free Software Foundation, Inc.
+ 2002, 2003, 2004, 2005, 2006 Free Software Foundation, Inc.
Written by Steve Chamberlain <sac@cygnus.com>
ELF support by Ian Lance Taylor <ian@cygnus.com>
#include "ldemul.h"
#include <ldgram.h>
#include "elf/common.h"
+#include "elf-bfd.h"
/* Declare functions used by various EXTRA_EM_FILEs. */
static void gld${EMULATION_NAME}_before_parse (void);
static void gld${EMULATION_NAME}_after_open (void);
-static void gld${EMULATION_NAME}_provide_init_fini_syms (void);
static void gld${EMULATION_NAME}_before_allocation (void);
-static bfd_boolean gld${EMULATION_NAME}_place_orphan
- (lang_input_statement_type *file, asection *s);
+static bfd_boolean gld${EMULATION_NAME}_place_orphan (asection *s);
static void gld${EMULATION_NAME}_layout_sections_again (void);
static void gld${EMULATION_NAME}_finish (void) ATTRIBUTE_UNUSED;
if (!entry->add_needed)
class |= DYN_NO_ADD_NEEDED;
+ if (entry->just_syms_flag
+ && (bfd_get_file_flags (entry->the_bfd) & DYNAMIC) != 0)
+ einfo (_("%P%F: --just-symbols may not be used on DSO: %B\n"),
+ entry->the_bfd);
+
if (!class
|| (bfd_get_file_flags (entry->the_bfd) & DYNAMIC) == 0)
return FALSE;
static struct bfd_link_needed_list *global_needed;
static struct stat global_stat;
-static bfd_boolean global_found;
+static lang_input_statement_type *global_found;
static struct bfd_link_needed_list *global_vercheck_needed;
static bfd_boolean global_vercheck_failed;
const char *suffix;
const char *soname;
- if (global_found)
+ if (global_found != NULL)
return;
if (s->the_bfd == NULL)
return;
- if (s->as_needed
- && (bfd_elf_get_dyn_lib_class (s->the_bfd) & DYN_AS_NEEDED) != 0)
+
+ /* If this input file was an as-needed entry, and wasn't found to be
+ needed at the stage it was linked, then don't say we have loaded it. */
+ if ((bfd_elf_get_dyn_lib_class (s->the_bfd) & DYN_AS_NEEDED) != 0)
return;
if (bfd_stat (s->the_bfd, &st) != 0)
&& st.st_ino == global_stat.st_ino
&& st.st_ino != 0)
{
- global_found = TRUE;
+ global_found = s;
return;
}
if (trace_file_tries)
info_msg (_("found %s at %s\n"), soname, name);
- global_found = FALSE;
+ global_found = NULL;
lang_for_each_input_file (gld${EMULATION_NAME}_stat_needed);
- if (global_found)
+ if (global_found != NULL)
{
/* Return TRUE to indicate that we found the file, even though
we aren't going to do anything with it. */
EOF
case ${target} in
+ *-*-freebsd* | *-*-dragonfly*)
+ cat >>e${EMULATION_NAME}.c <<EOF
+/* Read the system search path the FreeBSD way rather than the Linux way. */
+#ifdef HAVE_ELF_HINTS_H
+#include <elf-hints.h>
+#else
+#include "elf-hints-local.h"
+#endif
+
+static bfd_boolean
+gld${EMULATION_NAME}_check_ld_elf_hints (const char *name, int force)
+{
+ static bfd_boolean initialized;
+ static char *ld_elf_hints;
+ struct dt_needed needed;
+
+ if (!initialized)
+ {
+ FILE *f;
+ char *tmppath;
+
+ tmppath = concat (ld_sysroot, _PATH_ELF_HINTS, NULL);
+ f = fopen (tmppath, FOPEN_RB);
+ free (tmppath);
+ if (f != NULL)
+ {
+ struct elfhints_hdr hdr;
+
+ if (fread (&hdr, 1, sizeof (hdr), f) == sizeof (hdr)
+ && hdr.magic == ELFHINTS_MAGIC
+ && hdr.version == 1)
+ {
+ if (fseek (f, hdr.strtab + hdr.dirlist, SEEK_SET) != -1)
+ {
+ char *b;
+
+ b = xmalloc (hdr.dirlistlen + 1);
+ if (fread (b, 1, hdr.dirlistlen + 1, f) ==
+ hdr.dirlistlen + 1)
+ ld_elf_hints = gld${EMULATION_NAME}_add_sysroot (b);
+
+ free (b);
+ }
+ }
+ fclose (f);
+ }
+
+ initialized = TRUE;
+ }
+
+ if (ld_elf_hints == NULL)
+ return FALSE;
+
+ needed.by = NULL;
+ needed.name = name;
+ return gld${EMULATION_NAME}_search_needed (ld_elf_hints, & needed,
+ force);
+}
+EOF
+ # FreeBSD
+ ;;
+
*-*-linux-* | *-*-k*bsd*-*)
cat >>e${EMULATION_NAME}.c <<EOF
/* For a native linker, check the file /etc/ld.so.conf for directories
size_t len, alloc;
};
-static void
+static bfd_boolean
gld${EMULATION_NAME}_parse_ld_so_conf
(struct gld${EMULATION_NAME}_ld_so_conf *info, const char *filename);
free (newp);
}
-static void
+static bfd_boolean
gld${EMULATION_NAME}_parse_ld_so_conf
(struct gld${EMULATION_NAME}_ld_so_conf *info, const char *filename)
{
size_t linelen;
if (f == NULL)
- return;
+ return FALSE;
linelen = 256;
line = xmalloc (linelen);
while (! feof (f));
free (line);
fclose (f);
+ return TRUE;
}
static bfd_boolean
char *tmppath;
struct gld${EMULATION_NAME}_ld_so_conf info;
- tmppath = concat (ld_sysroot, "/etc/ld.so.conf", NULL);
info.path = NULL;
info.len = info.alloc = 0;
- gld${EMULATION_NAME}_parse_ld_so_conf (&info, tmppath);
+ tmppath = concat (ld_sysroot, "${prefix}/etc/ld.so.conf", NULL);
+ if (!gld${EMULATION_NAME}_parse_ld_so_conf (&info, tmppath))
+ {
+ free (tmppath);
+ tmppath = concat (ld_sysroot, "/etc/ld.so.conf", NULL);
+ gld${EMULATION_NAME}_parse_ld_so_conf (&info, tmppath);
+ }
free (tmppath);
+
if (info.path)
{
char *d = gld${EMULATION_NAME}_add_sysroot (info.path);
static void
gld${EMULATION_NAME}_check_needed (lang_input_statement_type *s)
{
- if (global_found)
+ const char *soname;
+
+ /* Stop looking if we've found a loaded lib. */
+ if (global_found != NULL
+ && (bfd_elf_get_dyn_lib_class (global_found->the_bfd)
+ & DYN_AS_NEEDED) == 0)
return;
- /* If this input file was an as-needed entry, and wasn't found to be
- needed at the stage it was linked, then don't say we have loaded it. */
- if (s->as_needed
- && (s->the_bfd == NULL
- || (bfd_elf_get_dyn_lib_class (s->the_bfd) & DYN_AS_NEEDED) != 0))
+ if (s->filename == NULL || s->the_bfd == NULL)
return;
- if (s->filename != NULL)
+ /* Don't look for a second non-loaded as-needed lib. */
+ if (global_found != NULL
+ && (bfd_elf_get_dyn_lib_class (s->the_bfd) & DYN_AS_NEEDED) != 0)
+ return;
+
+ if (strcmp (s->filename, global_needed->name) == 0)
{
- const char *f;
+ global_found = s;
+ return;
+ }
- if (strcmp (s->filename, global_needed->name) == 0)
+ if (s->search_dirs_flag)
+ {
+ const char *f = strrchr (s->filename, '/');
+ if (f != NULL
+ && strcmp (f + 1, global_needed->name) == 0)
{
- global_found = TRUE;
+ global_found = s;
return;
}
-
- if (s->search_dirs_flag)
- {
- f = strrchr (s->filename, '/');
- if (f != NULL
- && strcmp (f + 1, global_needed->name) == 0)
- {
- global_found = TRUE;
- return;
- }
- }
}
- if (s->the_bfd != NULL)
+ soname = bfd_elf_get_dt_soname (s->the_bfd);
+ if (soname != NULL
+ && strcmp (soname, global_needed->name) == 0)
{
- const char *soname;
-
- soname = bfd_elf_get_dt_soname (s->the_bfd);
- if (soname != NULL
- && strcmp (soname, global_needed->name) == 0)
- {
- global_found = TRUE;
- return;
- }
+ global_found = s;
+ return;
}
}
/* See if this file was included in the link explicitly. */
global_needed = l;
- global_found = FALSE;
+ global_found = NULL;
lang_for_each_input_file (gld${EMULATION_NAME}_check_needed);
- if (global_found)
+ if (global_found != NULL
+ && (bfd_elf_get_dyn_lib_class (global_found->the_bfd)
+ & DYN_AS_NEEDED) == 0)
continue;
n.by = l->by;
if (trace_file_tries)
info_msg (_("%s needed by %B\n"), l->name, l->by);
+ /* As-needed libs specified on the command line (or linker script)
+ take priority over libs found in search dirs. */
+ if (global_found != NULL)
+ {
+ nn.name = global_found->filename;
+ if (gld${EMULATION_NAME}_try_needed (&nn, TRUE))
+ continue;
+ }
+
/* We need to find this file and include the symbol table. We
want to search for the file in the same way that the dynamic
linker will search. That means that we want to use
EOF
fi
+if [ "x${USE_LIBPATH}" = xyes ] ; then
+ case ${target} in
+ *-*-freebsd* | *-*-dragonfly*)
+ cat >>e${EMULATION_NAME}.c <<EOF
+ if (gld${EMULATION_NAME}_check_ld_elf_hints (l->name, force))
+ break;
+EOF
+ # FreeBSD
+ ;;
+
+ *-*-linux-* | *-*-k*bsd*-*)
+ # Linux
+ cat >>e${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
len = strlen (l->name);
for (search = search_head; search != NULL; search = search->next)
if (search != NULL)
break;
EOF
-if [ "x${USE_LIBPATH}" = xyes ] ; then
- case ${target} in
- *-*-linux-* | *-*-k*bsd*-*)
- cat >>e${EMULATION_NAME}.c <<EOF
- if (gld${EMULATION_NAME}_check_ld_so_conf (l->name, force))
- break;
-EOF
- # Linux
- ;;
- esac
-fi
cat >>e${EMULATION_NAME}.c <<EOF
}
will do no harm. */
if (strcmp (exp->assign.dst, ".") != 0)
{
- if (!bfd_elf_record_link_assignment (&link_info, exp->assign.dst,
- provide))
+ if (!bfd_elf_record_link_assignment (output_bfd, &link_info,
+ exp->assign.dst, provide,
+ exp->assign.hidden))
einfo ("%P%F: failed to record assignment to %s: %E\n",
exp->assign.dst);
}
fi
cat >>e${EMULATION_NAME}.c <<EOF
-static void
-gld${EMULATION_NAME}_provide_bound_symbols (const char *sec,
- const char *start,
- const char *end)
-{
- asection *s = bfd_get_section_by_name (output_bfd, sec);
- _bfd_elf_provide_section_bound_symbols (&link_info, s, start, end);
-}
-
-/* If not building a shared library, provide
-
- __preinit_array_start
- __preinit_array_end
- __init_array_start
- __init_array_end
- __fini_array_start
- __fini_array_end
-
- They are set here rather than via PROVIDE in the linker
- script, because using PROVIDE inside an output section
- statement results in unnecessary output sections. Using
- PROVIDE outside an output section statement runs the risk of
- section alignment affecting where the section starts. */
-
-static void
-gld${EMULATION_NAME}_provide_init_fini_syms (void)
-{
- if (!link_info.relocatable && link_info.executable)
- {
- gld${EMULATION_NAME}_provide_bound_symbols (".preinit_array",
- "__preinit_array_start",
- "__preinit_array_end");
- gld${EMULATION_NAME}_provide_bound_symbols (".init_array",
- "__init_array_start",
- "__init_array_end");
- gld${EMULATION_NAME}_provide_bound_symbols (".fini_array",
- "__fini_array_start",
- "__fini_array_end");
- }
-}
-
/* This is called after the sections have been attached to output
sections, but before any sizes or addresses have been set. */
referred to by dynamic objects. */
lang_for_each_statement (gld${EMULATION_NAME}_find_statement_assignment);
- ldemul_do_assignments ();
-
/* Let the ELF backend work out the sizes of any sections required
by dynamic linking. */
rpath = command_line.rpath;
}
}
- if (!link_info.relocatable)
- strip_excluded_output_sections ();
+ before_allocation_default ();
if (!bfd_elf_size_dynsym_hash_dynstr (output_bfd, &link_info))
einfo ("%P%F: failed to set dynamic section sizes: %E\n");
sections in the right segment. */
static bfd_boolean
-gld${EMULATION_NAME}_place_orphan (lang_input_statement_type *file, asection *s)
+gld${EMULATION_NAME}_place_orphan (asection *s)
{
static struct orphan_save hold[] =
{
lang_output_section_statement_type *after;
lang_output_section_statement_type *os;
int isdyn = 0;
+ int iself = s->owner->xvec->flavour == bfd_target_elf_flavour;
+ unsigned int sh_type = iself ? elf_section_type (s) : SHT_NULL;
secname = bfd_get_section_name (s->owner, s);
if (! link_info.relocatable
&& link_info.combreloc
- && (s->flags & SEC_ALLOC)
- && strncmp (secname, ".rel", 4) == 0)
+ && (s->flags & SEC_ALLOC))
{
- if (secname[4] == 'a')
- secname = ".rela.dyn";
- else
- secname = ".rel.dyn";
- isdyn = 1;
+ if (iself)
+ switch (sh_type)
+ {
+ case SHT_RELA:
+ secname = ".rela.dyn";
+ isdyn = 1;
+ break;
+ case SHT_REL:
+ secname = ".rel.dyn";
+ isdyn = 1;
+ break;
+ default:
+ break;
+ }
+ else if (strncmp (secname, ".rel", 4) == 0)
+ {
+ secname = secname[4] == 'a' ? ".rela.dyn" : ".rel.dyn";
+ isdyn = 1;
+ }
}
if (isdyn || (!config.unique_orphan_sections && !unique_section_p (s)))
if (os != NULL
&& (os->bfd_section == NULL
|| os->bfd_section->flags == 0
- || ((s->flags ^ os->bfd_section->flags)
- & (SEC_LOAD | SEC_ALLOC)) == 0))
+ || (_bfd_elf_match_sections_by_type (output_bfd,
+ os->bfd_section,
+ s->owner, s)
+ && ((s->flags ^ os->bfd_section->flags)
+ & (SEC_LOAD | SEC_ALLOC)) == 0)))
{
/* We already have an output section statement with this
name, and its bfd section, if any, has compatible flags.
If the section already exists but does not have any flags
set, then it has been created by the linker, probably as a
result of a --section-start command line switch. */
- lang_add_section (&os->children, s, os, file);
+ lang_add_section (&os->children, s, os);
return TRUE;
}
}
&& hold[orphan_text].os != NULL)
{
lang_add_section (&hold[orphan_text].os->children, s,
- hold[orphan_text].os, file);
+ hold[orphan_text].os);
return TRUE;
}
if ((s->flags & SEC_ALLOC) == 0)
;
else if ((s->flags & SEC_LOAD) != 0
- && strncmp (secname, ".note", 5) == 0)
+ && ((iself && sh_type == SHT_NOTE)
+ || (!iself && strncmp (secname, ".note", 5) == 0)))
place = &hold[orphan_interp];
else if ((s->flags & (SEC_LOAD | SEC_HAS_CONTENTS)) == 0)
place = &hold[orphan_bss];
place = &hold[orphan_sdata];
else if ((s->flags & SEC_READONLY) == 0)
place = &hold[orphan_data];
- else if (strncmp (secname, ".rel", 4) == 0
+ else if (((iself && (sh_type == SHT_RELA || sh_type == SHT_REL))
+ || (!iself && strncmp (secname, ".rel", 4) == 0))
&& (s->flags & SEC_LOAD) != 0)
place = &hold[orphan_rel];
else if ((s->flags & SEC_CODE) == 0)
}
after = place->os;
if (after == NULL)
- after = lang_output_section_find_by_flags (s, &place->os);
+ after = lang_output_section_find_by_flags
+ (s, &place->os, _bfd_elf_match_sections_by_type);
if (after == NULL)
/* *ABS* is always the first output section statement. */
after = &lang_output_section_statement.head->output_section_statement;
einfo ("%F%P: place_orphan failed: %E\n");
}
- lang_insert_orphan (file, s, secname, after, place, NULL, NULL);
+ lang_insert_orphan (s, secname, after, place, NULL, NULL);
return TRUE;
}
if (bfd_elf_discard_info (output_bfd, &link_info))
gld${EMULATION_NAME}_layout_sections_again ();
- _bfd_elf_fix_excluded_sec_syms (output_bfd, &link_info);
+ finish_default ();
}
EOF
fi
#define OPTION_GROUP (OPTION_ENABLE_NEW_DTAGS + 1)
#define OPTION_EH_FRAME_HDR (OPTION_GROUP + 1)
#define OPTION_EXCLUDE_LIBS (OPTION_EH_FRAME_HDR + 1)
-
+
static void
gld${EMULATION_NAME}_add_options
(int ns, char **shortopts, int nl, struct option **longopts,
link_info.flags |= (bfd_vma) DF_BIND_NOW;
link_info.flags_1 |= (bfd_vma) DF_1_NOW;
}
+ else if (strcmp (optarg, "lazy") == 0)
+ {
+ link_info.flags &= ~(bfd_vma) DF_BIND_NOW;
+ link_info.flags_1 &= ~(bfd_vma) DF_1_NOW;
+ }
else if (strcmp (optarg, "origin") == 0)
{
link_info.flags |= (bfd_vma) DF_ORIGIN;
link_info.relro = TRUE;
else if (strcmp (optarg, "norelro") == 0)
link_info.relro = FALSE;
+ else if (strncmp (optarg, "max-page-size=", 14) == 0)
+ {
+ char *end;
+ config.maxpagesize = strtoul (optarg + 14, &end, 0);
+ if (*end)
+ einfo (_("%P%F: invalid maxium page size \`%s'\n"),
+ optarg + 14);
+ }
+ else if (strncmp (optarg, "common-page-size=", 17) == 0)
+ {
+ char *end;
+ config.commonpagesize = strtoul (optarg + 17, &end, 0);
+ if (*end)
+ einfo (_("%P%F: invalid common page size \`%s'\n"),
+ optarg + 17);
+ }
/* What about the other Solaris -z options? FIXME. */
break;
EOF
fprintf (file, _(" -z execstack\t\tMark executable as requiring executable stack\n"));
fprintf (file, _(" -z initfirst\t\tMark DSO to be initialized first at runtime\n"));
fprintf (file, _(" -z interpose\t\tMark object to interpose all DSOs but executable\n"));
+ fprintf (file, _(" -z lazy\t\tMark object lazy runtime binding (default)\n"));
fprintf (file, _(" -z loadfltr\t\tMark object requiring immediate process\n"));
fprintf (file, _(" -z muldefs\t\tAllow multiple definitions\n"));
fprintf (file, _(" -z nocombreloc\tDon't merge dynamic relocs into one section\n"));
fprintf (file, _(" -z 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 relro\t\tCreate RELRO program header\n"));
+ fprintf (file, _(" -z max-page-size=SIZE\tSet maximum page size to SIZE\n"));
+ fprintf (file, _(" -z common-page-size=SIZE\n\t\t\tSet common page size to SIZE\n"));
fprintf (file, _(" -z KEYWORD\t\tIgnored for Solaris compatibility\n"));
EOF
fi
${LDEMUL_SET_OUTPUT_ARCH-set_output_arch_default},
${LDEMUL_CHOOSE_TARGET-ldemul_default_target},
${LDEMUL_BEFORE_ALLOCATION-gld${EMULATION_NAME}_before_allocation},
- ${LDEMUL_DO_ASSIGNMENTS-gld${EMULATION_NAME}_provide_init_fini_syms},
${LDEMUL_GET_SCRIPT-gld${EMULATION_NAME}_get_script},
"${EMULATION_NAME}",
"${OUTPUT_FORMAT}",
projects / deliverable / binutils-gdb.git / blobdiff