From 3043f53925eea0d348968ff414aa81872579fa1f Mon Sep 17 00:00:00 2001
From: Mary <me@thog.eu>
Date: Sun, 28 Nov 2021 13:01:17 +0100
Subject: [PATCH] kernel: Add support for CFI (#2839)

Add basic support for the CFI value being passed in X18 since 11.0.0 by the official kernel.
We do not implement any random generator atm in the kernel and as such the KSystemControl.GenerateRandom function is stubbed
---
 Ryujinx.HLE/HOS/Kernel/Common/KSystemControl.cs | 6 ++++++
 Ryujinx.HLE/HOS/Kernel/Threading/KThread.cs     | 1 +
 2 files changed, 7 insertions(+)

diff --git a/Ryujinx.HLE/HOS/Kernel/Common/KSystemControl.cs b/Ryujinx.HLE/HOS/Kernel/Common/KSystemControl.cs
index 630baacfc2..881421424f 100644
--- a/Ryujinx.HLE/HOS/Kernel/Common/KSystemControl.cs
+++ b/Ryujinx.HLE/HOS/Kernel/Common/KSystemControl.cs
@@ -58,6 +58,12 @@ namespace Ryujinx.HLE.HOS.Kernel.Common
             return DramMemoryMap.DramBase + GetDramSize(size);
         }
 
+        public static ulong GenerateRandom()
+        {
+            // TODO
+            return 0;
+        }
+
         public static ulong GetDramSize(MemorySize size)
         {
             return size switch
diff --git a/Ryujinx.HLE/HOS/Kernel/Threading/KThread.cs b/Ryujinx.HLE/HOS/Kernel/Threading/KThread.cs
index 396a79bae9..646292487d 100644
--- a/Ryujinx.HLE/HOS/Kernel/Threading/KThread.cs
+++ b/Ryujinx.HLE/HOS/Kernel/Threading/KThread.cs
@@ -187,6 +187,7 @@ namespace Ryujinx.HLE.HOS.Kernel.Threading
 
             if (is64Bits)
             {
+                Context.SetX(18, KSystemControl.GenerateRandom() | 1);
                 Context.SetX(31, stackTop);
             }
             else