From 8baf35e7afd75e4987ae0c8eac226f167bcc657b Mon Sep 17 00:00:00 2001
From: bbb651 <bar.ye651@gmail.com>
Date: Thu, 3 Dec 2020 11:12:32 +0200
Subject: [PATCH] Added AVM2 op "Swap"

---
 core/src/avm2/activation.rs | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/core/src/avm2/activation.rs b/core/src/avm2/activation.rs
index 4186dec7d..a5bbc2f5e 100644
--- a/core/src/avm2/activation.rs
+++ b/core/src/avm2/activation.rs
@@ -516,6 +516,7 @@ impl<'a, 'gc, 'gc_context> Activation<'a, 'gc, 'gc_context> {
                 Op::RShift => self.op_rshift(),
                 Op::Subtract => self.op_subtract(),
                 Op::SubtractI => self.op_subtract_i(),
+                Op::Swap => self.op_swap(),
                 Op::URShift => self.op_urshift(),
                 Op::Jump { offset } => self.op_jump(offset, reader),
                 Op::IfTrue { offset } => self.op_if_true(offset, reader),
@@ -1731,6 +1732,16 @@ impl<'a, 'gc, 'gc_context> Activation<'a, 'gc, 'gc_context> {
         Ok(FrameControl::Continue)
     }
 
+    fn op_swap(&mut self) -> Result<FrameControl<'gc>, Error> {
+        let value2 = self.context.avm2.pop().coerce_to_i32(self)?;
+        let value1 = self.context.avm2.pop().coerce_to_i32(self)?;
+
+        self.context.avm2.push(value2);
+        self.context.avm2.push(value1);
+
+        Ok(FrameControl::Continue)
+    }
+
     fn op_urshift(&mut self) -> Result<FrameControl<'gc>, Error> {
         let value2 = self.context.avm2.pop().coerce_to_u32(self)?;
         let value1 = self.context.avm2.pop().coerce_to_u32(self)?;