--- /dev/null
+/* Rewritten by Rusty Russell, on the backs of many others...
+ Copyright (C) 2001 Rusty Russell, 2002 Rusty Russell IBM.
+
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 2 of the License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program; if not, write to the Free Software
+ Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+*/
+#include <lwk/init.h>
+#include <lwk/extable.h>
+#include <arch/uaccess.h>
+#include <arch/sections.h>
+
+extern struct exception_table_entry __start___ex_table[];
+extern struct exception_table_entry __stop___ex_table[];
+
+/* Sort the kernel's built-in exception table */
+void __init sort_exception_table(void)
+{
+ sort_extable(__start___ex_table, __stop___ex_table);
+}
+
+/* Given an address, look for it in the exception table. */
+const struct exception_table_entry *search_exception_table(unsigned long addr)
+{
+ const struct exception_table_entry *e;
+
+ e = search_extable(__start___ex_table, __stop___ex_table-1, addr);
+ return e;
+}
+
+int core_kernel_text(unsigned long addr)
+{
+ if (addr >= (unsigned long)_stext &&
+ addr <= (unsigned long)_etext)
+ return 1;
+
+ if (addr >= (unsigned long)_sinittext &&
+ addr <= (unsigned long)_einittext)
+ return 1;
+ return 0;
+}
+
+int __kernel_text_address(unsigned long addr)
+{
+ if (core_kernel_text(addr))
+ return 1;
+ return 0;
+}
+
+int kernel_text_address(unsigned long addr)
+{
+ if (core_kernel_text(addr))
+ return 1;
+ return 0;
+}