bfin: add support for new cacheflush syscall

Newer gcc's will generate a call to cacheflush when updating jump tables,
and that has to be done in kernel space (to avoid hardware anomalies).  So
make sure uClibc provides that symbol.

Signed-off-by: Steve Kilbane <steve@whitecrow.demon.co.uk>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>

1 files changed, 25 insertions, 0 deletions

diff --git a/libc/sysdeps/linux/bfin/sys/cachectl.h b/libc/sysdeps/linux/bfin/sys/cachectl.h
new file mode 100644
index 000000000..ee4c03155
--- /dev/null
+++ b/libc/sysdeps/linux/bfin/sys/cachectl.h
@@ -0,0 +1,25 @@
+/*
+ * cachectl.h - Functions for cache control on Blackfin.
+ *
+ * Copyright (C) 2010 Analog Devices, Inc.
+ *
+ * Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball.
+ */
+
+#ifndef _SYS_CACHECTL_H
+#define _SYS_CACHECTL_H	1
+
+#include <features.h>
+
+/*
+ * Get the kernel definition for the flag bits
+ */
+#include <asm/cachectl.h>
+
+__BEGIN_DECLS
+
+extern int cacheflush (void *addr, __const int nbytes, __const int flags);
+
+__END_DECLS
+
+#endif	/* sys/cachectl.h */