2 files changed, 3 insertions, 0 deletions
diff --git a/src/sys/include/np/lex.h b/src/sys/include/np/lex.h
index ebd6f32..ba581b7 100644
--- a/src/sys/include/np/lex.h
+++ b/src/sys/include/np/lex.h
@@ -41,6 +41,7 @@ struct np_work;
 #define TOKEN_BEGIN "begin"
 #define TOKEN_PROC "proc"
 #define TOKEN_END "end"
+#define TOKEN_RETURN "return"
 
 /* Types */
 #define TOKEN_U8    "u8"
@@ -93,6 +94,7 @@ typedef enum {
     TT_BEGIN,           /* 'begin' */
     TT_PROC,            /* 'proc' */
     TT_END,             /* 'end' */
+    TT_RETURN,          /* 'return' */
 } tt_t;
 
 typedef uint64_t tokval_t;
diff --git a/src/sys/include/np/piir.h b/src/sys/include/np/piir.h
index d108776..5625409 100644
--- a/src/sys/include/np/piir.h
+++ b/src/sys/include/np/piir.h
@@ -56,6 +56,7 @@ typedef int8_t md_byte_t;
 #define PIIR_LOAD_R32 0x03  /* Load 32-bit register */
 #define PIIR_LOAD_R64 0x04  /* Load 64-bit register */
 #define PIIR_RET_NIL  0x05  /* Return nothing */
+#define PIIR_RET_NUM  0x06  /* Return a number */
 
 /*
  * Represents the PIIR virtual machine for storing