From f298278f372292f614889bfecd7eda343ea2920d Mon Sep 17 00:00:00 2001
From: Merry <git@mary.rs>
Date: Sat, 19 Nov 2022 21:54:21 +0000
Subject: [PATCH] arm/dynarmic: Initial implementation for instruction tick
 counts

---
 src/core/CMakeLists.txt                   |  2 ++
 src/core/arm/dynarmic/arm_dynarmic.cpp    |  4 ++++
 src/core/arm/dynarmic/arm_tick_counts.cpp | 16 ++++++++++++++++
 src/core/arm/dynarmic/arm_tick_counts.h   | 13 +++++++++++++
 4 files changed, 35 insertions(+)
 create mode 100644 src/core/arm/dynarmic/arm_tick_counts.cpp
 create mode 100644 src/core/arm/dynarmic/arm_tick_counts.h

diff --git a/src/core/CMakeLists.txt b/src/core/CMakeLists.txt
index e1738e9f66..d57aef53e9 100644
--- a/src/core/CMakeLists.txt
+++ b/src/core/CMakeLists.txt
@@ -492,6 +492,8 @@ if (ARCHITECTURE_x86_64 OR ARCHITECTURE_arm64)
         arm/dynarmic/arm_dynarmic_cp15.h
         arm/dynarmic/arm_exclusive_monitor.cpp
         arm/dynarmic/arm_exclusive_monitor.h
+        arm/dynarmic/arm_tick_counts.cpp
+        arm/dynarmic/arm_tick_counts.h
     )
     target_link_libraries(core PRIVATE dynarmic)
 endif()
diff --git a/src/core/arm/dynarmic/arm_dynarmic.cpp b/src/core/arm/dynarmic/arm_dynarmic.cpp
index 09fdb99b52..eea63f07fe 100644
--- a/src/core/arm/dynarmic/arm_dynarmic.cpp
+++ b/src/core/arm/dynarmic/arm_dynarmic.cpp
@@ -11,6 +11,7 @@
 #include "core/arm/dynarmic/arm_dynarmic.h"
 #include "core/arm/dynarmic/arm_dynarmic_cp15.h"
 #include "core/arm/dynarmic/arm_exclusive_monitor.h"
+#include "core/arm/dynarmic/arm_tick_counts.h"
 #include "core/core.h"
 #include "core/core_timing.h"
 #include "core/gdbstub/gdbstub.h"
@@ -161,6 +162,9 @@ public:
         s64 ticks = parent.GetTimer().GetDowncount();
         return static_cast<u64>(ticks <= 0 ? 0 : ticks);
     }
+    std::uint64_t GetTicksForCode(bool is_thumb, VAddr, std::uint32_t instruction) override {
+        return Core::TicksForInstruction(is_thumb, instruction);
+    }
 
     ARM_Dynarmic& parent;
     Kernel::SVCContext svc_context;
diff --git a/src/core/arm/dynarmic/arm_tick_counts.cpp b/src/core/arm/dynarmic/arm_tick_counts.cpp
new file mode 100644
index 0000000000..3a3af41f83
--- /dev/null
+++ b/src/core/arm/dynarmic/arm_tick_counts.cpp
@@ -0,0 +1,16 @@
+// Copyright 2022 Citra Emulator Project
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#include "common/common_types.h"
+#include "core/arm/dynarmic/arm_tick_counts.h"
+
+namespace Core {
+
+u64 TicksForInstruction(bool is_thumb, u32 instruction) {
+    (void)is_thumb;
+    (void)instruction;
+    return 1;
+}
+
+} // namespace Core
diff --git a/src/core/arm/dynarmic/arm_tick_counts.h b/src/core/arm/dynarmic/arm_tick_counts.h
new file mode 100644
index 0000000000..b6051522b0
--- /dev/null
+++ b/src/core/arm/dynarmic/arm_tick_counts.h
@@ -0,0 +1,13 @@
+// Copyright 2022 Citra Emulator Project
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#pragma once
+
+#include "common/common_types.h"
+
+namespace Core {
+
+u64 TicksForInstruction(bool is_thumb, u32 instruction);
+
+} // namespace Core