Minor changes.

2 files changed, 11 insertions, 2 deletions

diff --git a/src/kernel/ui/vt.cpp b/src/kernel/ui/vt.cpp
index 4675cdc..683d484 100644
--- a/src/kernel/ui/vt.cpp
+++ b/src/kernel/ui/vt.cpp
@@ -91,11 +91,15 @@ void vt::writeHex(uint32_t v) {
 	}
 }
 
-void vt::writeDec(uint32_t v) {
+void vt::writeDec(int v) {
 	if (v == 0) {
 		put('0');
 		return;
 	}
+	if (v < 0) {
+		put ('-');
+		v = -v;
+	}
 
 	char numbers[] = "0123456789";
 	while (v > 0) {
diff --git a/src/kernel/ui/vt.h b/src/kernel/ui/vt.h
index b4f3672..ebafe5f 100644
--- a/src/kernel/ui/vt.h
+++ b/src/kernel/ui/vt.h
@@ -28,7 +28,12 @@ class vt : public node {
 	void clear();
 	void writeStr(char* str);
 	void writeHex(uint32_t v);
-	void writeDec(uint32_t v);
+	void writeDec(int v);
+	// shortcuts
+	vt& operator<< (char* str) { writeStr(str); return *this; }
+	vt& operator<< (uint32_t t) { writeHex(t); return *this; }
+	vt& operator<< (int i) { writeDec(i); return *this; }
+
 
 	int outputTo(display *display);