Add our doscmd to the tree. This is a result of work from BSDI, and

a group of dos emulator developers.
Submitted by:	Jonathan Lemon <jlemon@americantv.com>
Obtained from:	BSDI

1 files changed, 110 insertions, 0 deletions

diff --git a/usr.bin/doscmd/int1a.c b/usr.bin/doscmd/int1a.c
new file mode 100644
index 0000000..a75dfec
--- /dev/null
+++ b/usr.bin/doscmd/int1a.c
@@ -0,0 +1,110 @@
+/*
+ * Copyright (c) 1992, 1993, 1996
+ *	Berkeley Software Design, Inc.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by Berkeley Software
+ *	Design, Inc.
+ *
+ * THIS SOFTWARE IS PROVIDED BY Berkeley Software Design, Inc. ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL Berkeley Software Design, Inc. BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ *	BSDI int1a.c,v 2.2 1996/04/08 19:32:49 bostic Exp
+ *
+ * $Id: int1a.c,v 1.3 1996/09/22 15:42:56 miff Exp $
+ */
+
+#include "doscmd.h"
+
+static inline int
+to_BCD (int n)
+{
+    n &= 0xFF;
+    return n%10 + ((n/10)<<4);
+}
+
+void
+int1a(regcontext_t *REGS)
+{
+    struct	timeval	tod;
+    struct	timezone zone;
+    struct	tm *tm;
+    long	value;
+    static long midnight = 0;
+
+    R_FLAGS &= ~PSL_C;
+
+    switch (R_AH) {
+    case 0x00:
+	gettimeofday(&tod, &zone);
+
+	if (midnight == 0) {
+	    tm = localtime(&boot_time.tv_sec);
+	    midnight = boot_time.tv_sec - (((tm->tm_hour * 60)
+					    + tm->tm_min) * 60
+					   + tm->tm_sec);
+	}
+
+	R_AL = (tod.tv_sec - midnight) / (24 * 60 * 60);
+
+	if (R_AL) {
+	    tm = localtime(&boot_time.tv_sec);
+	    midnight = boot_time.tv_sec - (((tm->tm_hour * 60)
+					    + tm->tm_min) * 60
+					   + tm->tm_sec);
+	}
+
+	tod.tv_sec -= midnight;
+	tod.tv_usec -= boot_time.tv_usec;
+
+	value = (tod.tv_sec * 182 + tod.tv_usec / (1000000L/182)) / 10;
+	R_CX = value >> 16;
+	R_DX = value & 0xffff;
+	break;
+
+    case 0x01:				/* set current clock count */
+	tm = localtime(&boot_time.tv_sec);
+	midnight = boot_time.tv_sec - (((tm->tm_hour * 60)
+	    + tm->tm_min) * 60 + tm->tm_sec);
+        break;
+
+    case 0x02:
+	gettimeofday(&tod, &zone);
+	tm = localtime(&tod.tv_sec);
+	R_CH = to_BCD(tm->tm_hour);
+	R_CL = to_BCD(tm->tm_min);
+	R_DH = to_BCD(tm->tm_sec);
+	break;
+
+    case 0x04:
+	gettimeofday(&tod, &zone);
+	tm = localtime(&tod.tv_sec);
+	R_CH = to_BCD((tm->tm_year + 1900) / 100);
+	R_CL = to_BCD((tm->tm_year + 1900) % 100);
+	R_DH = to_BCD(tm->tm_mon + 1);
+	R_DL = to_BCD(tm->tm_mday);
+	break;
+
+    default:
+	unknown_int2(0x1a, R_AH, REGS);
+	break;
+    }
+}