move fp control to lib9

1 files changed, 37 insertions, 0 deletions

diff --git a/lib9/setfcr-MacOSX-power.c b/lib9/setfcr-MacOSX-power.c
new file mode 100644
index 00000000..66ec542d
--- /dev/null
+++ b/lib9/setfcr-MacOSX-power.c
@@ -0,0 +1,37 @@
+/*
+ * MacOSX/Darwin ppc fpu support
+ * Mimic Plan9 floating point support
+ */
+
+#include "lib9.h"
+#include <architecture/ppc/fp_regs.h>
+
+ulong
+getfcr(void)
+{
+	ppc_fp_scr_t fpscr = get_fp_scr();
+	return ((ulong*)&fpscr)[1];
+}
+
+ulong
+getfsr(void)
+{
+	ppc_fp_scr_t fpscr = get_fp_scr();
+	return ((ulong*)&fpscr)[1];
+}
+
+void
+setfsr(ulong fsr)
+{
+	ppc_fp_scr_t fpscr = get_fp_scr();
+	(((ulong*)&fpscr)[1]) = fsr;
+	set_fp_scr(fpscr);
+}
+
+void
+setfcr(ulong fcr)
+{
+	ppc_fp_scr_t fpscr = get_fp_scr();
+	(((ulong*)&fpscr)[1]) = fcr;
+	set_fp_scr(fpscr);
+}