Copy pc86 platform to nes platform, and make change accordingly.

plat/nes/libsys/write.c

@@ -0,0 +1,48 @@
+/* $Source$
+ * $State$
+ * $Revision$
+ */
+
+#include <stdlib.h>
+#include <errno.h>
+#include <unistd.h>
+#include "libsys.h"
+
+void _sys_write_tty(char c)
+{
+	_sys_rawwrite(c);
+#if 0
+	if ((c == '\n') && !(_sys_ttyflags & RAW))
+		_sys_rawwrite('\r');
+#endif
+	if (c == '\n')
+		_sys_rawwrite('\r');
+}
+
+int write(int fd, void* buffer, size_t count)
+{
+	int i;
+	char* p = buffer;
+	
+	/* We're only allowed to write to fd 0, 1 or 2. */
+	
+	if ((fd < 0) || (fd > 2))
+	{
+		errno = EBADF;
+		return -1;
+	}
+	
+	/* Write all data. */
+	
+	i = 0;
+	while (i < count)
+	{
+		_sys_write_tty(*p++);
+			
+		i++;
+	}
+	
+	/* No failures. */
+	
+	return count;
+}