interface: Allow saving and storing of contexts

include/dynarmic/context.h

@@ -0,0 +1,44 @@
+/* This file is part of the dynarmic project.
+ * Copyright (c) 2016 MerryMage
+ * This software may be used and distributed according to the terms of the GNU
+ * General Public License version 2 or any later version.
+ */
+
+#pragma once
+
+#include <array>
+#include <cstdint>
+#include <memory>
+
+namespace Dynarmic {
+
+struct Context {
+public:
+    Context();
+    ~Context();
+    Context(const Context&);
+    Context(Context&&);
+    Context& operator=(const Context&);
+    Context& operator=(Context&&);
+
+    /// View and modify registers.
+    std::array<std::uint32_t, 16>& Regs();
+    const std::array<std::uint32_t, 16>& Regs() const;
+    std::array<std::uint32_t, 64>& ExtRegs();
+    const std::array<std::uint32_t, 64>& ExtRegs() const;
+
+    /// View and modify CPSR.
+    std::uint32_t Cpsr() const;
+    void SetCpsr(std::uint32_t value);
+
+    /// View and modify FPSCR.
+    std::uint32_t Fpscr() const;
+    void SetFpscr(std::uint32_t value);
+
+private:
+    friend class Jit;
+    struct Impl;
+    std::unique_ptr<Impl> impl;
+};
+
+} // namespace Dynarmic

include/dynarmic/dynarmic.h

@@ -15,6 +15,8 @@
 
 namespace Dynarmic {
 
+struct Context;
+
 namespace IR {
 class LocationDescriptor;
 }
@@ -70,6 +72,10 @@ public:
     std::uint32_t Fpscr() const;
     void SetFpscr(std::uint32_t value);
 
+    Context SaveContext() const;
+    void SaveContext(Context&) const;
+    void LoadContext(const Context&);
+
     /**
      * Returns true if Jit::Run was called but hasn't returned yet.
      * i.e.: We're in a callback.