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authorH.J. Lu <hjl.tools@gmail.com>2002-08-08 03:50:18 +0000
committerH.J. Lu <hjl.tools@gmail.com>2002-08-08 03:50:18 +0000
commit3194163592008a9e575d577921647ab91b09c77b (patch)
tree4c4fa4fb54d632b2db20f90e84d881f337cc66c3 /bfd/elflink.h
parentcb811fe799b18a559b53b719e40dd65504db57c0 (diff)
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Check symbols with undefine version.
Diffstat (limited to 'bfd/elflink.h')
-rw-r--r--bfd/elflink.h133
1 files changed, 92 insertions, 41 deletions
diff --git a/bfd/elflink.h b/bfd/elflink.h
index 59cc397..b1732e4 100644
--- a/bfd/elflink.h
+++ b/bfd/elflink.h
@@ -2938,6 +2938,9 @@ NAME(bfd_elf,size_dynamic_sections) (output_bfd, soname, rpath,
struct elf_info_failed eif;
struct elf_link_hash_entry *h;
asection *dynstr;
+ struct bfd_elf_version_tree *t;
+ struct bfd_elf_version_expr *d;
+ boolean all_defined;
*sinterpptr = bfd_get_section_by_name (dynobj, ".interp");
BFD_ASSERT (*sinterpptr != NULL || info->shared);
@@ -3018,6 +3021,54 @@ NAME(bfd_elf,size_dynamic_sections) (output_bfd, soname, rpath,
return false;
}
+ /* Make all global versions with definiton. */
+ for (t = verdefs; t != NULL; t = t->next)
+ for (d = t->globals; d != NULL; d = d->next)
+ if (!d->symver && strchr (d->pattern, '*') == NULL)
+ {
+ const char *verstr, *name;
+ size_t namelen, verlen, newlen;
+ char *newname, *p;
+ struct elf_link_hash_entry *newh;
+
+ name = d->pattern;
+ namelen = strlen (name);
+ verstr = t->name;
+ verlen = strlen (verstr);
+ newlen = namelen + verlen + 3;
+
+ newname = (char *) bfd_malloc ((bfd_size_type) newlen);
+ if (newname == NULL)
+ return false;
+ memcpy (newname, name, namelen);
+
+ /* Check the hidden versioned definition. */
+ p = newname + namelen;
+ *p++ = ELF_VER_CHR;
+ memcpy (p, verstr, verlen + 1);
+ newh = elf_link_hash_lookup (elf_hash_table (info),
+ newname, false, false,
+ false);
+ if (newh == NULL
+ || (newh->root.type != bfd_link_hash_defined
+ && newh->root.type != bfd_link_hash_defweak))
+ {
+ /* Check the default versioned definition. */
+ *p++ = ELF_VER_CHR;
+ memcpy (p, verstr, verlen + 1);
+ newh = elf_link_hash_lookup (elf_hash_table (info),
+ newname, false, false,
+ false);
+ }
+ free (newname);
+
+ /* Mark this version if there is a definition. */
+ if (newh != NULL
+ && (newh->root.type == bfd_link_hash_defined
+ || newh->root.type == bfd_link_hash_defweak))
+ d->symver = 1;
+ }
+
/* Attach all the symbols to their version information. */
asvinfo.output_bfd = output_bfd;
asvinfo.info = info;
@@ -3030,6 +3081,28 @@ NAME(bfd_elf,size_dynamic_sections) (output_bfd, soname, rpath,
if (asvinfo.failed)
return false;
+ if (!info->allow_undefined_version)
+ {
+ /* Check if all global versions have a definiton. */
+ all_defined = true;
+ for (t = verdefs; t != NULL; t = t->next)
+ for (d = t->globals; d != NULL; d = d->next)
+ if (!d->symver && !d->script
+ && strchr (d->pattern, '*') == NULL)
+ {
+ (*_bfd_error_handler)
+ (_("%s: undefined version: %s"),
+ d->pattern, t->name);
+ all_defined = false;
+ }
+
+ if (!all_defined)
+ {
+ bfd_set_error (bfd_error_bad_value);
+ return false;
+ }
+ }
+
/* Find all symbols which were defined in a dynamic object and make
the backend pick a reasonable value for them. */
elf_link_hash_traverse (elf_hash_table (info),
@@ -4258,7 +4331,6 @@ elf_link_assign_sym_version (h, data)
(_("%s: undefined versioned symbol name %s"),
bfd_get_filename (sinfo->output_bfd), h->root.root.string);
bfd_set_error (bfd_error_bad_value);
- error_return:
sinfo->failed = true;
return false;
}
@@ -4283,18 +4355,34 @@ elf_link_assign_sym_version (h, data)
{
if (t->globals != NULL)
{
+ boolean matched;
+
+ matched = false;
for (d = t->globals; d != NULL; d = d->next)
{
if ((*d->match) (d, h->root.root.string))
{
- h->verinfo.vertree = t;
- local_ver = NULL;
- break;
+ if (d->symver)
+ matched = true;
+ else
+ {
+ /* There is a version without definition. Make
+ the symbol the default definition for this
+ version. */
+ h->verinfo.vertree = t;
+ local_ver = NULL;
+ d->script = 1;
+ break;
+ }
}
}
if (d != NULL)
break;
+ else if (matched)
+ /* There is no undefined version for this symbol. Hide the
+ default one. */
+ (*bed->elf_backend_hide_symbol) (info, h, true);
}
if (t->locals != NULL)
@@ -4327,43 +4415,6 @@ elf_link_assign_sym_version (h, data)
(*bed->elf_backend_hide_symbol) (info, h, true);
}
}
-
- /* We need to check if a hidden versioned definition should
- hide the default one. */
- if (h->dynindx != -1 && h->verinfo.vertree != NULL)
- {
- const char *verstr, *name;
- size_t namelen, verlen, newlen;
- char *newname;
- struct elf_link_hash_entry *newh;
-
- name = h->root.root.string;
- namelen = strlen (name);
- verstr = h->verinfo.vertree->name;
- verlen = strlen (verstr);
- newlen = namelen + verlen + 2;
-
- newname = (char *) bfd_malloc ((bfd_size_type) newlen);
- if (newname == NULL)
- goto error_return;
- memcpy (newname, name, namelen);
-
- /* Check the hidden versioned definition. */
- p = newname + namelen;
- *p++ = ELF_VER_CHR;
- memcpy (p, verstr, verlen + 1);
- newh = elf_link_hash_lookup (elf_hash_table (info), newname,
- false, false, false);
-
- if (newh
- && (newh->root.type == bfd_link_hash_defined
- || newh->root.type == bfd_link_hash_defweak))
- /* We found a hidden versioned definition. Hide the
- default one. */
- (*bed->elf_backend_hide_symbol) (info, h, true);
-
- free (newname);
- }
}
return true;