dmnt: first pass at breakpoints/watchpoints

stratosphere/dmnt.gen2/source/dmnt2_hardware_breakpoint.hpp

@@ -0,0 +1,55 @@
+/*
+ * 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.hpp"
+
+namespace ams::dmnt {
+
+    struct HardwareBreakPoint : public BreakPoint {
+        svc::HardwareBreakPointRegisterName m_reg;
+        svc::HardwareBreakPointRegisterName m_ctx;
+
+        void Initialize(svc::HardwareBreakPointRegisterName r, svc::HardwareBreakPointRegisterName c) {
+            m_reg = r;
+            m_ctx = c;
+        }
+
+        virtual Result Clear(DebugProcess *debug_process) override;
+        virtual Result Set(DebugProcess *debug_process, uintptr_t address, size_t size, bool is_step) override;
+    };
+
+    class HardwareBreakPointManager : public BreakPointManager {
+        public:
+            static constexpr size_t BreakPointCountMax = 0x10;
+        private:
+            HardwareBreakPoint m_breakpoints[BreakPointCountMax];
+        public:
+            static Result SetHardwareBreakPoint(u32 r, u64 dbgbcr, u64 value);
+            static Result SetContextBreakPoint(svc::HardwareBreakPointRegisterName ctx, DebugProcess *debug_process);
+            static svc::HardwareBreakPointRegisterName GetWatchPointContextRegister();
+            static Result SetExecutionBreakPoint(svc::HardwareBreakPointRegisterName reg, svc::HardwareBreakPointRegisterName ctx, u64 address);
+        public:
+            explicit HardwareBreakPointManager(DebugProcess *debug_process);
+        private:
+            virtual BreakPointBase *GetBreakPoint(size_t index) override;
+        private:
+            static void CountBreakPointRegisters();
+
+            static bool SendMultiCoreRequest(const void *request);
+    };
+
+}