diff --git a/arch/ppc/math-emu/frsp.c b/arch/ppc/math-emu/frsp.c
new file mode 100644
index 0000000..d879b2a
--- /dev/null
+++ b/arch/ppc/math-emu/frsp.c
@@ -0,0 +1,25 @@
+#include <linux/types.h>
+#include <linux/errno.h>
+#include <asm/uaccess.h>
+
+#include "soft-fp.h"
+#include "double.h"
+#include "single.h"
+
+int
+frsp(void *frD, void *frB)
+{
+	FP_DECL_D(B);
+
+#ifdef DEBUG
+	printk("%s: D %p, B %p\n", __FUNCTION__, frD, frB);
+#endif
+
+	__FP_UNPACK_D(B, frB);
+
+#ifdef DEBUG
+	printk("B: %ld %lu %lu %ld (%ld)\n", B_s, B_f1, B_f0, B_e, B_c);
+#endif
+
+	return __FP_PACK_DS(frD, B);
+}