initial import of DOS mouse driver

1 files changed, 87 insertions, 0 deletions

diff --git a/dlog.h b/dlog.h
new file mode 100644
index 0000000..dfa346d
--- /dev/null
+++ b/dlog.h
@@ -0,0 +1,87 @@
+#ifndef DLOG_H
+#define DLOG_H
+
+#define ENABLE_DLOG 1
+
+#if ENABLE_DLOG
+
+#if 1
+#include "vbox.h"
+#define dlog_putc vbox_log_putc
+#endif
+
+static inline void dlog_endline(void)
+{
+	dlog_putc('\n');
+}
+
+static inline void dlog_print(const char *s)
+{
+	char c;
+	while (c = *s++) {
+		dlog_putc(c);
+	}
+}
+
+static inline void dlog_printu(unsigned int num, int base)
+{
+	char buf[4];
+	int i = 0;
+
+	do {
+		int digit = num % base;
+
+		if (digit < 10) {
+			buf[i] = '0' + digit;
+		} else {
+			buf[i] = 'a' + (digit - 10);
+		}
+
+		i++;
+		num /= base;
+	} while (num > 0);
+
+	while (i--) {
+		dlog_putc(buf[i]);
+	}
+}
+
+static inline void dlog_printx(unsigned int num)
+{
+	dlog_printu(num, 16);
+}
+
+static inline void dlog_printd(int num, int base)
+{
+	unsigned int unum;
+
+	// TODO
+	if (num < 0) {
+		dlog_putc('-');
+		unum = -num;
+	} else {
+		unum = num;
+	}
+
+	dlog_printu(unum, base);
+}
+
+static inline void dlog_puts(const char *s)
+{
+	dlog_print(s);
+	dlog_endline();
+}
+
+#else
+
+#define dlog_putc(c)
+#define dlog_endline()
+#define dlog_print(s)
+#define dlog_printu(n)
+#define dlog_printx(n)
+#define dlog_printd(n,b)
+#define dlog_puts(s)
+
+#endif
+
+#endif