m

.gitignore

@@ -1,5 +1,6 @@
 *.exe
 *.out
+*.com
 *.sym
 *.bin
 *.o
@@ -11,4 +12,4 @@ instrs.lst
 stdout.txt
 stderr.txt
 stdin.txt
-a.sym
+*.sym

ka/crt/fmt/printf.k

@@ -26,14 +26,13 @@ print:
     mov rcx, STRLEN_MAX
 
 .1:
-    test b[ax0], b[ax0]
-    j.z .2
+    cmp b[ax0], 0
+    ret.z
 
     prn b[ax0]
     inc ax0
     loop .1
 
-.2:
     ret
 
 ;

vm/pc/exec.c

@@ -62,16 +62,23 @@ void exec_instr(ctx_t *ctx,
     rx2++; // since last frame change
     rx1++; // since startup
 
-#ifndef NDEBUG
-    dump_instr(ctx, in, p1, p2, lock, rep, cond);
-#endif
-
     //
     // For REPs we evaluate the condition AFTER running the instruction,
     // in a do ... while(cond) fashion
     //
     if (!rep && !eval_cond(ctx, cond))
+    {
+#ifndef NDEBUG
+        // Say something about ignored instruction?
+        //trace("0x%lX:\n", rpc);
+#endif
         return;
+    }
+
+
+#ifndef NDEBUG
+    dump_instr(ctx, in, p1, p2, lock, rep, cond);
+#endif
 
 do_rep: