Initial source

1 files changed, 96 insertions, 0 deletions

diff --git a/i386/pc/putchar.c b/i386/pc/putchar.c
new file mode 100644
index 0000000..d5b106c
--- /dev/null
+++ b/i386/pc/putchar.c
@@ -0,0 +1,96 @@
+/* 
+ * Copyright (c) 1995-1994 The University of Utah and
+ * the Computer Systems Laboratory at the University of Utah (CSL).
+ * All rights reserved.
+ *
+ * Permission to use, copy, modify and distribute this software is hereby
+ * granted provided that (1) source code retains these copyright, permission,
+ * and disclaimer notices, and (2) redistributions including binaries
+ * reproduce the notices in supporting documentation, and (3) all advertising
+ * materials mentioning features or use of this software display the following
+ * acknowledgement: ``This product includes software developed by the
+ * Computer Systems Laboratory at the University of Utah.''
+ *
+ * THE UNIVERSITY OF UTAH AND CSL ALLOW FREE USE OF THIS SOFTWARE IN ITS "AS
+ * IS" CONDITION.  THE UNIVERSITY OF UTAH AND CSL DISCLAIM ANY LIABILITY OF
+ * ANY KIND FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
+ *
+ * CSL requests users of this software to return to csl-dist@cs.utah.edu any
+ * improvements that they make and grant CSL redistribution rights.
+ *
+ *      Author: Bryan Ford, University of Utah CSL
+ */
+
+#include <mach/machine/eflags.h>
+
+#include "real.h"
+
+#ifndef ENABLE_IMMCONSOLE
+
+#include <rc.h>
+int putchar(int c)
+{
+
+	if (c == '\n')
+		putchar('\r');
+
+	{
+#if RCLINE >= 0
+		static int serial_inited = 0;
+		if (! serial_inited) {
+			init_serial();
+			serial_inited = 1;
+		}
+		serial_putc(c);
+#else
+		struct real_call_data rcd;
+		rcd.eax = 0x0e00 | (c & 0xff);
+		rcd.ebx = 0x07;
+		rcd.flags = 0;
+		real_int(0x10, &rcd);
+#endif
+	}
+
+	return 0;
+}
+
+#else ENABLE_IMMCONSOLE
+
+void
+putchar(unsigned char c)
+{
+	static int ofs = -1;
+
+	if (ofs < 0)
+	{
+		ofs = 0;
+		putchar('\n');
+	}
+	if (c == '\r')
+	{
+		ofs = 0;
+	}
+	else if (c == '\n')
+	{
+		bcopy(0xb8000+80*2, 0xb8000, 80*2*24);
+		bzero(0xb8000+80*2*24, 80*2);
+		ofs = 0;
+	}
+	else
+	{
+		volatile unsigned char *p;
+
+		if (ofs >= 80)
+		{
+			putchar('\r');
+			putchar('\n');
+		}
+
+		p = (void*)0xb8000 + 80*2*24 + ofs*2;
+		p[0] = c;
+		p[1] = 0x0f;
+		ofs++;
+	}
+}
+
+#endif ENABLE_IMMCONSOLE