Third try at importing the mvme88k port. This is a working kernel

from nivas.
Userland and compiler still need to be worked on.
Make certain what directory the import is done from.

1 files changed, 79 insertions, 0 deletions

diff --git a/sys/arch/mvme88k/stand/libsa/clock.c b/sys/arch/mvme88k/stand/libsa/clock.c
new file mode 100644
index 00000000000..683bd48f849
--- /dev/null
+++ b/sys/arch/mvme88k/stand/libsa/clock.c
@@ -0,0 +1,79 @@
+#include <sys/types.h>
+
+#include "clockreg.h"
+#include "config.h"
+#include "clock.h"
+
+/*
+ * BCD to decimal and decimal to BCD.
+ */
+#define FROMBCD(x)      (((x) >> 4) * 10 + ((x) & 0xf))
+#define TOBCD(x)        (((x) / 10 * 16) + ((x) % 10))
+
+#define SECDAY          (24 * 60 * 60)
+#define SECYR           (SECDAY * 365)
+#define LEAPYEAR(y)     (((y) & 3) == 0)
+
+/*
+ * This code is defunct after 2068.
+ * Will Unix still be here then??
+ */
+const short dayyr[12] =
+{0, 31, 59, 90, 120, 151, 181, 212, 243, 273, 304, 334};
+
+static  u_long
+chiptotime(sec, min, hour, day, mon, year)
+	register int sec, min, hour, day, mon, year;
+{
+	register int days, yr;
+
+	sec = FROMBCD(sec);
+	min = FROMBCD(min);
+	hour = FROMBCD(hour);
+	day = FROMBCD(day);
+	mon = FROMBCD(mon);
+	year = FROMBCD(year) + YEAR0;
+	if (year < 70)
+		year = 70;
+
+	/* simple sanity checks */
+	if (year < 70 || mon < 1 || mon > 12 || day < 1 || day > 31)
+		return (0);
+	days = 0;
+	for (yr = 70; yr < year; yr++)
+		days += LEAPYEAR(yr) ? 366 : 365;
+	days += dayyr[mon - 1] + day - 1;
+	if (LEAPYEAR(yr) && mon > 2)
+		days++;
+	/* now have days since Jan 1, 1970; the rest is easy... */
+	return (days * SECDAY + hour * 3600 + min * 60 + sec);
+}
+
+time_t
+getsecs()
+{
+	extern int cputyp;
+	register struct clockreg *cl;
+	int     sec, min, hour, day, mon, year;
+
+	if (cputyp == CPU_147)
+		cl = (struct clockreg *) CLOCK_ADDR_147;
+	else
+		cl = (struct clockreg *) CLOCK_ADDR_16x;
+
+	cl->cl_csr |= CLK_READ; /* enable read (stop time) */
+	sec = cl->cl_sec;
+	min = cl->cl_min;
+	hour = cl->cl_hour;
+	day = cl->cl_mday;
+	mon = cl->cl_month;
+	year = cl->cl_year;
+	cl->cl_csr &= ~CLK_READ;/* time wears on */
+	return (chiptotime(sec, min, hour, day, mon, year));
+}
+
+int
+getticks()
+{
+	return getsecs() * 100;
+}