1 files changed, 29 insertions, 0 deletions
diff --git a/common/common.c b/common/common.c
index 9c91f910..5a546207 100644
--- a/common/common.c
+++ b/common/common.c
@@ -91,3 +91,32 @@ int idata_bytes(int opcode)
         return 0;
     }
 }
+
+/*
+ * Uninitialized data bytes length from opcode
+ */
+int resv_bytes(int opcode)
+{
+    switch (opcode) {
+    case I_RESB:
+        return 1;
+    case I_RESW:
+        return 2;
+    case I_RESD:
+        return 4;
+    case I_RESQ:
+        return 8;
+    case I_REST:
+        return 10;
+    case I_RESO:
+        return 16;
+    case I_RESY:
+        return 32;
+    case I_RESZ:
+        return 64;
+    case I_none:
+        return -1;
+    default:
+        return 0;
+    }
+}