kern: add debug thread dump

libraries/libmesosphere/include/mesosphere.hpp

@@ -54,6 +54,7 @@
 #include <mesosphere/kern_kernel.hpp>
 #include <mesosphere/kern_k_page_table_manager.hpp>
 #include <mesosphere/kern_select_page_table.hpp>
+#include <mesosphere/kern_k_dump_object.hpp>
 
 /* Miscellaneous objects. */
 #include <mesosphere/kern_k_shared_memory_info.hpp>

libraries/libmesosphere/include/mesosphere/kern_build_config.hpp

@@ -26,6 +26,7 @@
 #ifdef  MESOSPHERE_BUILD_FOR_DEBUGGING
 #define MESOSPHERE_ENABLE_ASSERTIONS
 #define MESOSPHERE_ENABLE_DEBUG_PRINT
+#define MESOSPHERE_ENABLE_KERNEL_STACK_USAGE
 #endif
 
 //#define MESOSPHERE_BUILD_FOR_TRACING

libraries/libmesosphere/include/mesosphere/kern_k_dump_object.hpp

@@ -0,0 +1,25 @@
+/*
+ * Copyright (c) 2018-2020 Atmosphère-NX
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+#pragma once
+#include <mesosphere/kern_common.hpp>
+#include <mesosphere/kern_select_cpu.hpp>
+
+namespace ams::kern::KDumpObject {
+
+    void DumpThread();
+    void DumpThread(u64 thread_id);
+
+}

libraries/libmesosphere/include/mesosphere/kern_k_thread.hpp

@@ -533,6 +533,7 @@ namespace ams::kern {
                 return this->termination_requested || this->GetRawState() == ThreadState_Terminated;
             }
 
+            size_t GetKernelStackUsage() const;
         public:
             /* Overridden parent functions. */
             virtual u64 GetId() const override final { return this->GetThreadId(); }