PR ld/12001

        * ldlang.c (ldlang_def_chain_list): New variable.  Contains a list
        of symbols defined via the --defsym command line option and
        currently waiting assignment.
        (insert_defined): Add a defined symbol to the symbol table.
        (ldlang_add_def): Add a entry to the ldlang_def_chain_list.
        (lang_place_defineds): Walk ldlang_def_chain_list defining the
        symbols.
        (lang_process): Call lang_place_defineds.
        (lang_add_assignment): If the assignment has come from a --defsym
        command line option then call lang_add_def.

        * ld-script/default-script2.d: Fix expected address for text
        section.

        PR gold/12001
        * script.h (class Symbol_assignment: name): New member.  Returns
        the name of the symbol.
        * scrfipt.cc (Script_options::is_pending_assignment): New member.
        Returns true if the given symbol name is on the list of
        assignments wating to be processed.
        * archive.cc (should_incldue_member): If the symbol is undefined,
        check to see if it is on the list of symbols pending assignment.

1 files changed, 64 insertions, 0 deletions

diff --git a/ld/ldlang.c b/ld/ldlang.c
index 95ef5f5..798d7a1 100644
--- a/ld/ldlang.c
+++ b/ld/ldlang.c
@@ -3344,6 +3344,65 @@ lang_place_undefineds (void)
     insert_undefined (ptr->name);
 }
 
+typedef struct bfd_sym_chain ldlang_def_chain_list_type;
+
+static ldlang_def_chain_list_type ldlang_def_chain_list_head;
+
+/* Insert NAME as defined in the symbol table.  */
+
+static void
+insert_defined (const char *name)
+{
+  struct bfd_link_hash_entry *h;
+
+  h = bfd_link_hash_lookup (link_info.hash, name, TRUE, FALSE, TRUE);
+  if (h == NULL)
+    einfo (_("%P%F: bfd_link_hash_lookup failed: %E\n"));
+  if (h->type == bfd_link_hash_new
+      || h->type == bfd_link_hash_undefined
+      || h->type == bfd_link_hash_undefweak)
+    {
+      h->type = bfd_link_hash_defined;
+      h->u.def.section = bfd_abs_section_ptr;
+      h->u.def.value   = 0;
+    }
+}
+
+/* Like lang_add_undef, but this time for symbols defined on the
+   command line.  */
+
+static void
+ldlang_add_def (const char *const name)
+{
+  if (link_info.output_bfd != NULL)
+    insert_defined (xstrdup (name));
+  else
+    {
+      ldlang_def_chain_list_type *new_def;
+
+      new_def = (ldlang_def_chain_list_type *) stat_alloc (sizeof (*new_def));
+      new_def->next = ldlang_def_chain_list_head.next;
+      ldlang_def_chain_list_head.next = new_def;
+
+      new_def->name = xstrdup (name);
+    }
+}
+
+/* Run through the list of defineds created above and place them
+   into the linker hash table as defined symbols belonging to the
+   script file.  */
+
+static void
+lang_place_defineds (void)
+{
+  ldlang_def_chain_list_type *ptr;
+
+  for (ptr = ldlang_def_chain_list_head.next;
+       ptr != NULL;
+       ptr = ptr->next)
+    insert_defined (ptr->name);
+}
+
 /* Check for all readonly or some readwrite sections.  */
 
 static void
@@ -6350,6 +6409,7 @@ lang_process (void)
 
   /* Add to the hash table all undefineds on the command line.  */
   lang_place_undefineds ();
+  lang_place_defineds ();
 
   if (!bfd_section_already_linked_table_init ())
     einfo (_("%P%F: Failed to create hash table\n"));
@@ -6634,6 +6694,10 @@ lang_add_assignment (etree_type *exp)
 {
   lang_assignment_statement_type *new_stmt;
 
+  extern int parsing_defsym;
+  if (parsing_defsym)
+    ldlang_add_def (exp->assign.dst);
+
   new_stmt = new_stat (lang_assignment_statement, stat_ptr);
   new_stmt->exp = exp;
   return new_stmt;