An mtrace stub.

54e63cc8 · Silas Boyd-Wickizer · 474a1c1c · 54e63cc8
--- a/xv6-mtrace.h
+++ b/xv6-mtrace.h
@@ -19,4 +19,5 @@ char* strncpy(char *s, const char *t, int n);
 #include "mtrace-magic.h"
 #else
 #define mtrace_lock_register(ip, x, name, op, y)
+#define mtrace_label_register(t, r, x, y, z, ip)
 #endif