my solution to lab5

lab/user/testmalloc.c

@@ -0,0 +1,24 @@
+#include <inc/lib.h>
+
+void
+umain(int argc, char **argv)
+{
+	char *buf;
+	int n;
+	void *v;
+
+	while (1) {
+		buf = readline("> ");
+		if (buf == 0)
+			exit();
+		if (memcmp(buf, "free ", 5) == 0) {
+			v = (void*) strtol(buf + 5, 0, 0);
+			free(v);
+		} else if (memcmp(buf, "malloc ", 7) == 0) {
+			n = strtol(buf + 7, 0, 0);
+			v = malloc(n);
+			printf("\t0x%x\n", (uintptr_t) v);
+		} else
+			printf("?unknown command\n");
+	}
+}