Implement the .res control statement

Similarly to other assemblers, this allows the programmer to write a
definite amount of bytes with the same values.

Compared to other assemblers there are two things to notice. First,
there is a limit to it (i.e. whatever can fit in 2 bytes). Second, if
the fill value is not provided, then it will default to the current
mapping's fill value, or just 0x00 if the current mapping doesn't define
one of its own.

Signed-off-by: Miquel Sabaté Solà <mikisabate@gmail.com>

1 files changed, 2 insertions, 0 deletions

diff --git a/lib/xixanta/src/node.rs b/lib/xixanta/src/node.rs
index 1ec2ed9..8fc3c73 100644
--- a/lib/xixanta/src/node.rs
+++ b/lib/xixanta/src/node.rs
@@ -141,6 +141,7 @@ pub enum ControlType {
     StartRepeat,
     EndRepeat,
     IncludeSource,
+    ReserveMemory,
 }
 
 impl fmt::Display for ControlType {
@@ -162,6 +163,7 @@ impl fmt::Display for ControlType {
             ControlType::StartRepeat => write!(f, ".repeat"),
             ControlType::EndRepeat => write!(f, ".endrepeat"),
             ControlType::IncludeSource => write!(f, ".include"),
+            ControlType::ReserveMemory => write!(f, ".res"),
         }
     }
 }