kern: implement thread call stack debug

libraries/libmesosphere/include/mesosphere/arch/arm64/kern_k_debug.hpp

@@ -44,6 +44,9 @@ namespace ams::kern::arch::arm64 {
             static uintptr_t GetProgramCounter(const KThread &thread);
             static void SetPreviousProgramCounter();
 
+            static void PrintRegister(KThread *thread = nullptr);
+            static void PrintBacktrace(KThread *thread = nullptr);
+
             static Result BreakIfAttached(ams::svc::BreakReason break_reason, uintptr_t address, size_t size);
             static Result SetHardwareBreakPoint(ams::svc::HardwareBreakPointRegisterName name, u64 flags, u64 value);
 
@@ -61,8 +64,6 @@ namespace ams::kern::arch::arm64 {
                     }
                 }
             }
-
-            /* TODO: This is a placeholder definition. */
     };
 
 }

libraries/libmesosphere/include/mesosphere/arch/arm64/kern_k_process_page_table.hpp

@@ -273,6 +273,10 @@ namespace ams::kern::arch::arm64 {
                 return this->page_table.GetHeapPhysicalAddress(address);
             }
 
+            KVirtualAddress GetHeapVirtualAddress(KPhysicalAddress address) const {
+                return this->page_table.GetHeapVirtualAddress(address);
+            }
+
             KBlockInfoManager *GetBlockInfoManager() {
                 return this->page_table.GetBlockInfoManager();
             }