From e766be6af916645348beaa2785e09cd11ae689f2 Mon Sep 17 00:00:00 2001
From: Matt Nadareski <mnadareski@outlook.com>
Date: Fri, 4 Nov 2022 16:09:20 -0700
Subject: [PATCH] Add LE/LX Fix-up page table

---
 .../LinearExecutable/Executable.cs            |  8 +++--
 .../LinearExecutable/FixupPageTableEntry.cs   | 36 +++++++++++++++++++
 2 files changed, 42 insertions(+), 2 deletions(-)
 create mode 100644 BurnOutSharp.Models/LinearExecutable/FixupPageTableEntry.cs

diff --git a/BurnOutSharp.Models/LinearExecutable/Executable.cs b/BurnOutSharp.Models/LinearExecutable/Executable.cs
index 84d09c59..c4962f7d 100644
--- a/BurnOutSharp.Models/LinearExecutable/Executable.cs
+++ b/BurnOutSharp.Models/LinearExecutable/Executable.cs
@@ -59,7 +59,11 @@ namespace BurnOutSharp.Models.LinearExecutable
         /// </summary>
         public PerPageChecksumTableEntry[] PerPageChecksumTable { get; set; }
 
-        // TODO: Fix-up page table
+        /// <summary>
+        /// Fix-up page table
+        /// </summary>
+        public FixupPageTableEntry[] FixupPageTable { get; set; }
+
         // TODO: Fix-up record table
 
         /// <summary>
@@ -81,7 +85,7 @@ namespace BurnOutSharp.Models.LinearExecutable
         /// </summary>
         public NonResidentNameTableEntry[] NonResidentNameTable { get; set; }
 
-        // TODO: Non-resident directives data
+        // TODO: Non-resident directives data (Undefined)
 
         /// <summary>
         /// Debug information
diff --git a/BurnOutSharp.Models/LinearExecutable/FixupPageTableEntry.cs b/BurnOutSharp.Models/LinearExecutable/FixupPageTableEntry.cs
new file mode 100644
index 00000000..ca85fa93
--- /dev/null
+++ b/BurnOutSharp.Models/LinearExecutable/FixupPageTableEntry.cs
@@ -0,0 +1,36 @@
+using System.Runtime.InteropServices;
+
+namespace BurnOutSharp.Models.LinearExecutable
+{
+    /// <summary>
+    /// The Fixup Page Table provides a simple mapping of a logical page number
+    /// to an offset into the Fixup Record Table for that page.
+    /// 
+    /// This table is parallel to the Object Page Table, except that there is
+    /// one additional entry in this table to indicate the end of the Fixup
+    /// Record Table.
+    /// 
+    /// The fixup records are kept in order by logical page in the fixup record
+    /// table. This allows the end of each page's fixup records is defined by the
+    /// offset for the next logical page's fixup records. This last entry provides
+    /// support of this mechanism for the last page in the fixup page table. 
+    /// </summary>
+    /// <see href="https://faydoc.tripod.com/formats/exe-LE.htm"/>
+    /// <see href="http://www.edm2.com/index.php/LX_-_Linear_eXecutable_Module_Format_Description"/>
+    [StructLayout(LayoutKind.Sequential)]
+    public class FixupPageTableEntry
+    {
+        /// <summary>
+        /// Offset for fixup record for this page. (1 to n)
+        /// Offset to the end of the fixup records. (n + 1)
+        /// </summary>
+        /// <remarks>
+        /// This field specifies the offset, from the beginning of the fixup record
+        /// table, to the first fixup record for this page. (1 to n)
+        /// 
+        /// This field specifies the offset following the last fixup record in the
+        /// fixup record table. This is the last entry in the fixup page table. (n + 1)
+        /// </remarks>
+        public uint Offset;
+    }
+}