versin v

consts.c

@@ -1,6 +1,6 @@
 #ifndef CONSTS
 #define CONSTS
-#define VERSION 3
+#define VERSION 4
 
 #endif /* ifndef CONSTS
 #define CONSTS

instruktion.c

@@ -34,5 +34,8 @@
 #define CALL 26
 #define RET 27
 #define DROP 28
+#define PUSHR 29
+#define POPR 30
+#define DUP 31
 
 #endif /* ifndef INSREUKTION */

njvm.c

@@ -166,7 +166,13 @@ void execute(struct program program) {
                 i = SIGN_EXTEND(IMMEDIATE(program.program[i])) - 1;
                 if (debug == 1) printf("new i: %i\n", i);
                 break;
-        }
+            case CALL:
+                push(stack, i+1);
+              break;  
+            case RET:
+               i = pop(stack);
+              break;
+      }
     }
     end:
     return;

programs/prog7.asm

@@ -0,0 +1,17 @@
+//
+// prog04.asm -- call/ret with args, and with ret value
+//
+
+	pushc 12
+  rdint
+  mul
+  wrint
+  call proc
+  halt
+
+proc:
+	asf 0
+  pushc '\n'
+  wrchr
+  rsf
+  ret