From 2e23abe83def82dd06eb478e965dcc51c6c095c5 Mon Sep 17 00:00:00 2001
From: Michael Scire <SciresM@gmail.com>
Date: Wed, 19 Feb 2020 21:21:44 -0800
Subject: [PATCH] kern: implement user thread start, el0 code now runs

---
 .../arch/arm64/kern_k_page_table_entry.hpp        |  2 +-
 .../include/mesosphere/kern_k_capabilities.hpp    |  1 -
 .../source/arch/arm64/kern_k_thread_context.cpp   | 15 ++++++++++++++-
 3 files changed, 15 insertions(+), 3 deletions(-)

diff --git a/libmesosphere/include/mesosphere/arch/arm64/kern_k_page_table_entry.hpp b/libmesosphere/include/mesosphere/arch/arm64/kern_k_page_table_entry.hpp
index a5ae4222..09d7df97 100644
--- a/libmesosphere/include/mesosphere/arch/arm64/kern_k_page_table_entry.hpp
+++ b/libmesosphere/include/mesosphere/arch/arm64/kern_k_page_table_entry.hpp
@@ -145,7 +145,7 @@ namespace ams::kern::arch::arm64 {
             constexpr ALWAYS_INLINE decltype(auto) SetAccessFlag(AccessFlag f)        { this->SetBitsDirect(10, 1, f); return *this; }
             constexpr ALWAYS_INLINE decltype(auto) SetShareable(Shareable s)          { this->SetBitsDirect(8, 2, s); return *this; }
             constexpr ALWAYS_INLINE decltype(auto) SetReadOnly(bool en)               { this->SetBit(7, en); return *this; }
-            constexpr ALWAYS_INLINE decltype(auto) SetUserAccessible(bool en)         { this->SetBit(7, en); return *this; }
+            constexpr ALWAYS_INLINE decltype(auto) SetUserAccessible(bool en)         { this->SetBit(6, en); return *this; }
             constexpr ALWAYS_INLINE decltype(auto) SetPageAttribute(PageAttribute a)  { this->SetBitsDirect(2, 3, a); return *this; }
 
             constexpr ALWAYS_INLINE u64 GetEntryTemplate() const {
diff --git a/libmesosphere/include/mesosphere/kern_k_capabilities.hpp b/libmesosphere/include/mesosphere/kern_k_capabilities.hpp
index 54390cf8..851fad45 100644
--- a/libmesosphere/include/mesosphere/kern_k_capabilities.hpp
+++ b/libmesosphere/include/mesosphere/kern_k_capabilities.hpp
@@ -222,7 +222,6 @@ namespace ams::kern {
             }
 
             bool SetSvcAllowed(u32 id) {
-                constexpr size_t BitsPerWord = BITSIZEOF(this->svc_access_flags[0]);
                 if (id < BITSIZEOF(this->svc_access_flags)) {
                     SetSvcAllowedImpl(this->svc_access_flags, id);
                     return true;
diff --git a/libmesosphere/source/arch/arm64/kern_k_thread_context.cpp b/libmesosphere/source/arch/arm64/kern_k_thread_context.cpp
index 1abd5dc3..67a18aee 100644
--- a/libmesosphere/source/arch/arm64/kern_k_thread_context.cpp
+++ b/libmesosphere/source/arch/arm64/kern_k_thread_context.cpp
@@ -22,7 +22,20 @@ namespace ams::kern::arch::arm64 {
     void SupervisorModeThreadStarter();
 
     void OnThreadStart() {
-        MESOSPHERE_TODO_IMPLEMENT();
+        MESOSPHERE_ASSERT(!KInterruptManager::AreInterruptsEnabled());
+        /* Send KDebug event for this thread's creation. */
+        {
+            KScopedInterruptEnable ei;
+            /* TODO */
+        }
+
+        /* Handle any pending dpc. */
+        while (GetCurrentThread().HasDpc()) {
+            KDpcManager::HandleDpc();
+        }
+
+        /* Clear our status as in an exception handler */
+        GetCurrentThread().ClearInExceptionHandler();
     }
 
     namespace {