X-Git-Url: http://v3vee.org/palacios/gitweb/gitweb.cgi?a=blobdiff_plain;f=kitten%2Fkernel%2Fextable.c;fp=kitten%2Fkernel%2Fextable.c;h=53bf98ab9d6d7630acffad53a5de2327d1626f36;hb=66a1a4c7a9edcd7d8bc207aca093d694a6e6b5b2;hp=0000000000000000000000000000000000000000;hpb=f7cf9c19ecb0a589dd45ae0d2c91814bd3c2acc2;p=palacios.git

diff --git a/kitten/kernel/extable.c b/kitten/kernel/extable.c
new file mode 100644
index 0000000..53bf98a
--- /dev/null
+++ b/kitten/kernel/extable.c
@@ -0,0 +1,65 @@
+/* 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;
+}