Implement print() and println() in Go

src/runtime/runtime.go

@@ -0,0 +1,41 @@
+
+package runtime
+
+// #include <stdio.h>
+import "C"
+
+const Compiler = "tgo"
+
+func printstring(s string) {
+	for i := 0; i < len(s); i++ {
+		C.putchar(C.int(s[i]))
+	}
+}
+
+func printint(n int) {
+	// Print integer in signed big-endian base-10 notation, for humans to
+	// read.
+	// TODO: don't recurse, but still be compact (and don't divide/mod
+	// more than necessary).
+	if n < 0 {
+		C.putchar('-')
+		n = -n
+	}
+	prevdigits := n / 10
+	if prevdigits != 0 {
+		printint(prevdigits)
+	}
+	C.putchar(C.int((n % 10) + '0'))
+}
+
+func printbyte(c uint8) {
+	C.putchar(C.int(c))
+}
+
+func printspace() {
+	C.putchar(' ')
+}
+
+func printnl() {
+	C.putchar('\n')
+}