From 4567214f23a63b4e4964433f4034240cc4fa6a4b Mon Sep 17 00:00:00 2001
From: David Li <li.davidm96@gmail.com>
Date: Thu, 14 Jan 2016 15:56:26 -0700
Subject: Add as_bytes to IsaType

---
 src/isa/mod.rs | 25 +++++++++++++++++++++++++
 1 file changed, 25 insertions(+)

diff --git a/src/isa/mod.rs b/src/isa/mod.rs
index 8d86610..6c4bfbc 100644
--- a/src/isa/mod.rs
+++ b/src/isa/mod.rs
@@ -115,6 +115,9 @@ pub trait IsaType {
     fn as_half_word(self) -> HalfWord;
     fn as_byte(self) -> Byte;
     fn as_address(self) -> Address;
+
+    /// Converts the type into bytes, LSB-first.
+    fn as_bytes(self) -> Vec<Byte>;
 }
 
 macro_rules! isa_utype {
@@ -148,6 +151,17 @@ macro_rules! isa_utype {
             fn as_address(self) -> Address {
                 self.as_word()
             }
+
+            fn as_bytes(self) -> Vec<Byte> {
+                use std::mem;
+
+                let mut bytes = vec![];
+                for offset in 0..mem::size_of::<$utype>() {
+                    bytes.push(Byte(((self.0 >> (8 * offset)) & 0xFF) as u8));
+                }
+
+                bytes
+            }
         }
 
         impl IsaType for $signed {
@@ -177,6 +191,17 @@ macro_rules! isa_utype {
             fn as_address(self) -> Address {
                 self.as_word()
             }
+
+            fn as_bytes(self) -> Vec<Byte> {
+                use std::mem;
+
+                let mut bytes = vec![];
+                for offset in 0..mem::size_of::<$utype>() {
+                    bytes.push(Byte(((self.0 >> (8 * offset)) & 0xFF) as u8));
+                }
+
+                bytes
+            }
         }
     }
 }
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