dmnt: first pass at breakpoints/watchpoints

stratosphere/dmnt.gen2/source/dmnt2_hardware_watchpoint.hpp

@@ -0,0 +1,53 @@
+/*
+ * 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 <stratosphere.hpp>
+#include "dmnt2_breakpoint_manager_base.hpp"
+
+namespace ams::dmnt {
+
+    struct WatchPoint : public BreakPointBase {
+        svc::HardwareBreakPointRegisterName m_reg;
+        svc::HardwareBreakPointRegisterName m_ctx;
+        bool m_read;
+        bool m_write;
+
+        void Initialize(svc::HardwareBreakPointRegisterName r, svc::HardwareBreakPointRegisterName c) {
+            m_reg = r;
+            m_ctx = c;
+        }
+
+        virtual Result Clear(DebugProcess *debug_process) override;
+        Result Set(DebugProcess *debug_process, uintptr_t address, size_t size, bool read, bool write);
+    };
+
+    class HardwareWatchPointManager : public BreakPointManagerBase {
+        public:
+            static constexpr size_t BreakPointCountMax = 0x10;
+        private:
+            WatchPoint m_breakpoints[BreakPointCountMax];
+        public:
+            static bool IsValidWatchPoint(u64 address, u64 size);
+        public:
+            explicit HardwareWatchPointManager(DebugProcess *debug_process);
+
+            Result SetWatchPoint(u64 address, u64 size, bool read, bool write);
+            Result GetWatchPointInfo(u64 address, bool &read, bool &write);
+        private:
+            virtual BreakPointBase *GetBreakPoint(size_t index) override;
+    };
+
+}