1 files changed, 34 insertions, 0 deletions
diff --git a/os/cerf405/compile.c b/os/cerf405/compile.c
new file mode 100644
index 00000000..da9976f2
--- /dev/null
+++ b/os/cerf405/compile.c
@@ -0,0 +1,34 @@
+#include	"u.h"
+#include	"../port/lib.h"
+#include	"mem.h"
+#include	"dat.h"
+#include	"fns.h"
+#include	"io.h"
+
+#define	MAXDCR	0x220
+
+#define	DCRF(n)	((((n)>>5)&0x1F)|(((n)&0x1F)<<5))
+#define	MTDCR(s,n)	((31<<26)|((s)<<21)|(DCRF(n)<<11)|(451<<1))
+#define	MFDCR(n,t)	((31<<26)|((t)<<21)|(DCRF(n)<<11)|(323<<1))
+#define	RETURN	0x4e800020
+ulong	_getdcr[MAXDCR][2];
+ulong	_putdcr[MAXDCR][2];
+
+void
+compiledcr(void)
+{
+	ulong *p;
+	int i;
+
+	for(i=0; i<MAXDCR; i++){
+		p = _getdcr[i];
+		p[0] = MFDCR(i, 3);
+		p[1] = RETURN;
+		p = _putdcr[i];
+		p[0] = MTDCR(3, i);
+		p[1] = RETURN;
+	}
+	dcflush(_getdcr, sizeof(_getdcr));
+	dcflush(_putdcr, sizeof(_putdcr));
+	/* no need to flush icache since they won't be there */
+}