Add AddTicks and GetTicksRemaining callbacks

include/dynarmic/callbacks.h

@@ -51,6 +51,10 @@ struct UserCallbacks {
     // This callback is called whenever a SVC instruction is executed.
     void (*CallSVC)(std::uint32_t swi);
 
+    // Timing-related callbacks
+    void (*AddTicks)(std::uint64_t ticks);
+    std::uint64_t (*GetTicksRemaining)();
+
     // Page Table
     // The page table is used for faster memory access. If an entry in the table is nullptr,
     // the JIT will fallback to calling the MemoryRead*/MemoryWrite* callbacks.

include/dynarmic/dynarmic.h

@@ -28,9 +28,8 @@ public:
      * Runs the emulated CPU for about cycle_count cycles.
      * Cannot be recursively called.
      * @param cycle_count Estimated number of cycles to run the CPU for.
-     * @returns Actual cycle count.
      */
-    std::size_t Run(std::size_t cycle_count);
+    void Run(std::size_t cycle_count);
 
     /**
      * Clears the code cache of all compiled code.