export_head = p;
}
+#ifdef CXX_WRAP_SPEC_LIST
+
+/* Hash table equality helper function. */
+
+static int
+wrapper_strcmp (const void *x, const void *y)
+{
+ return !strcmp ((const char *) x, (const char *) y);
+}
+
+/* Search for a function named TARGET in the list of library wrappers
+ we are using, returning a pointer to it if found or NULL if not.
+ This function might be called on quite a few symbols, and we only
+ have the list of names of wrapped functions available to us as a
+ spec string, so first time round we lazily initialise a hash table
+ to make things quicker. */
+
+static const char *
+i386_find_on_wrapper_list (const char *target)
+{
+ static char first_time = 1;
+ static htab_t wrappers;
+
+ if (first_time)
+ {
+ /* Beware that this is not a complicated parser, it assumes
+ that any sequence of non-whitespace beginning with an
+ underscore is one of the wrapped symbols. For now that's
+ adequate to distinguish symbols from spec substitutions
+ and command-line options. */
+ static char wrapper_list_buffer[] = CXX_WRAP_SPEC_LIST;
+ char *bufptr;
+ /* Breaks up the char array into separated strings
+ strings and enter them into the hash table. */
+ wrappers = htab_create_alloc (8, htab_hash_string, wrapper_strcmp,
+ 0, xcalloc, free);
+ for (bufptr = wrapper_list_buffer; *bufptr; ++bufptr)
+ {
+ char *found = NULL;
+ if (ISSPACE (*bufptr))
+ continue;
+ if (*bufptr == '_')
+ found = bufptr;
+ while (*bufptr && !ISSPACE (*bufptr))
+ ++bufptr;
+ if (*bufptr)
+ *bufptr = 0;
+ if (found)
+ *htab_find_slot (wrappers, found, INSERT) = found;
+ }
+ first_time = 0;
+ }
+
+ return (const char *) htab_find (wrappers, target);
+}
+
+#endif /* CXX_WRAP_SPEC_LIST */
+
/* This is called at the end of assembly. For each external function
which has not been defined, we output a declaration now. We also
output the .drectve section. */
if (! TREE_ASM_WRITTEN (decl)
&& TREE_SYMBOL_REFERENCED (DECL_ASSEMBLER_NAME (decl)))
{
+#ifdef CXX_WRAP_SPEC_LIST
+ /* To ensure the DLL that provides the corresponding real
+ functions is still loaded at runtime, we must reference
+ the real function so that an (unused) import is created. */
+ const char *realsym = i386_find_on_wrapper_list (p->name);
+ if (realsym)
+ i386_pe_declare_function_type (asm_out_file,
+ concat ("__real_", realsym, NULL), TREE_PUBLIC (decl));
+#endif /* CXX_WRAP_SPEC_LIST */
TREE_ASM_WRITTEN (decl) = 1;
i386_pe_declare_function_type (asm_out_file, p->name,
TREE_PUBLIC (decl));