sh: add cacheflush syscall wrapper

Signed-off-by: Giuseppe Cavallaro <peppe.cavallaro@st.com>
Signed-off-by: Carmelo Amoroso <carmelo.amoroso@st.com>

libc/sysdeps/linux/sh/Makefile.arch

@@ -7,7 +7,7 @@
 #
 
 CSRC := \
-	mmap.c pipe.c __init_brk.c brk.c sbrk.c syscall.c pread_write.c
+	mmap.c pipe.c __init_brk.c brk.c sbrk.c syscall.c pread_write.c cacheflush.c
 
 SSRC := setjmp.S __longjmp.S vfork.S clone.S ___fpscr_values.S
 

libc/sysdeps/linux/sh/cacheflush.c

@@ -0,0 +1,15 @@
+/*
+ * cacheflush syscall for SUPERH
+ *
+ * Copyright (C) 2009 STMicroelectronics Ltd
+ * Author: Giuseppe Cavallaro <peppe.cavallaro@st.com>
+ *
+ * Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball.
+ */
+#include <errno.h>
+#include <unistd.h>
+#include <sys/syscall.h>
+
+#ifdef __NR_cacheflush
+_syscall3(int, cacheflush, char *, addr, int, nbytes, int, op)
+#endif