powerpc: move math-emu over to arch/powerpc

Towards the goal of having arch/powerpc not build anything over in arch/ppc
move math-emu over.  Also, killed some references to arch/ppc/ in the
arch/powerpc Makefile which should belong in drivers/ when the particular
sub-arch's move over to arch/powerpc.

Signed-off-by: Kumar Gala <galak@kernel.crashing.org>

1 files changed, 23 insertions, 0 deletions

diff --git a/arch/powerpc/math-emu/mtfsfi.c b/arch/powerpc/math-emu/mtfsfi.c
new file mode 100644
index 000000000000..71df854baa7e
--- /dev/null
+++ b/arch/powerpc/math-emu/mtfsfi.c
@@ -0,0 +1,23 @@
+#include <linux/types.h>
+#include <linux/errno.h>
+#include <asm/uaccess.h>
+
+#include "soft-fp.h"
+
+int
+mtfsfi(unsigned int crfD, unsigned int IMM)
+{
+        u32 mask = 0xf;
+
+        if (!crfD)
+                mask = 9;
+
+        __FPU_FPSCR &= ~(mask << ((7 - crfD) << 2));
+        __FPU_FPSCR |= (IMM & 0xf) << ((7 - crfD) << 2);
+
+#ifdef DEBUG
+        printk("%s: %d %x: %08lx\n", __FUNCTION__, crfD, IMM, __FPU_FPSCR);
+#endif
+
+        return 0;
+}