+int
+_mesa_symbol_table_add_global_symbol(struct _mesa_symbol_table *table,
+ int name_space, const char *name,
+ void *declaration)
+{
+ struct symbol_header *hdr;
+ struct symbol *sym;
+ struct symbol *curr;
+ struct scope_level *top_scope;
+
+ check_symbol_table(table);
+
+ hdr = find_symbol(table, name);
+
+ check_symbol_table(table);
+
+ if (hdr == NULL) {
+ hdr = calloc(1, sizeof(*hdr));
+ if (hdr == NULL) {
+ _mesa_error_no_memory(__func__);
+ return -1;
+ }
+
+ hdr->name = strdup(name);
+
+ _mesa_hash_table_insert(table->ht, hdr->name, hdr);
+ hdr->next = table->hdr;
+ table->hdr = hdr;
+ }
+
+ check_symbol_table(table);
+
+ /* If the symbol already exists in this namespace at this scope, it cannot
+ * be added to the table.
+ */
+ for (sym = hdr->symbols
+ ; (sym != NULL) && (sym->name_space != name_space)
+ ; sym = sym->next_with_same_name) {
+ /* empty */
+ }
+
+ if (sym && sym->depth == 0)
+ return -1;
+
+ /* Find the top-level scope */
+ for (top_scope = table->current_scope
+ ; top_scope->next != NULL
+ ; top_scope = top_scope->next) {
+ /* empty */
+ }
+
+ sym = calloc(1, sizeof(*sym));
+ if (sym == NULL) {
+ _mesa_error_no_memory(__func__);
+ return -1;
+ }
+
+ sym->next_with_same_scope = top_scope->symbols;
+ sym->hdr = hdr;
+ sym->name_space = name_space;
+ sym->data = declaration;
+
+ assert(sym->hdr == hdr);
+
+ /* Since next_with_same_name is ordered by scope, we need to append the
+ * new symbol to the _end_ of the list.
+ */
+ if (hdr->symbols == NULL) {
+ hdr->symbols = sym;
+ } else {
+ for (curr = hdr->symbols
+ ; curr->next_with_same_name != NULL
+ ; curr = curr->next_with_same_name) {
+ /* empty */
+ }
+ curr->next_with_same_name = sym;
+ }
+ top_scope->symbols = sym;
+
+ check_symbol_table(table);
+ return 0;
+}
+
+
+