arm_dynarmic: CP15 support

externals/dynarmic

@@ -1 +1 @@
-Subproject commit 36082087ded632079b16d24137fdd0c450ce82ea
+Subproject commit 9ecdd32b846bd6061852a3c35b8883d2eb5863d2

externals/nihstro

@@ -1 +1 @@
-Subproject commit 7e24743af21a7c2e3cef21ef174ae4269d0cfdac
+Subproject commit 26a0a04a458df2b9ba6e39608bee183d8a0a00ec

src/core/CMakeLists.txt

@@ -2,6 +2,7 @@ set(SRCS
             arm/disassembler/arm_disasm.cpp
             arm/disassembler/load_symbol_map.cpp
             arm/dynarmic/arm_dynarmic.cpp
+            arm/dynarmic/arm_dynarmic_cp15.cpp
             arm/dyncom/arm_dyncom.cpp
             arm/dyncom/arm_dyncom_dec.cpp
             arm/dyncom/arm_dyncom_interpreter.cpp
@@ -176,6 +177,7 @@ set(HEADERS
             arm/disassembler/arm_disasm.h
             arm/disassembler/load_symbol_map.h
             arm/dynarmic/arm_dynarmic.h
+            arm/dynarmic/arm_dynarmic_cp15.h
             arm/dyncom/arm_dyncom.h
             arm/dyncom/arm_dyncom_dec.h
             arm/dyncom/arm_dyncom_interpreter.h

src/core/arm/dynarmic/arm_dynarmic.cpp

@@ -7,6 +7,7 @@
 #include "common/assert.h"
 #include "common/microprofile.h"
 #include "core/arm/dynarmic/arm_dynarmic.h"
+#include "core/arm/dynarmic/arm_dynarmic_cp15.h"
 #include "core/arm/dyncom/arm_dyncom_interpreter.h"
 #include "core/core.h"
 #include "core/core_timing.h"
@@ -39,10 +40,11 @@ static bool IsReadOnlyMemory(u32 vaddr) {
     return false;
 }
 
-static Dynarmic::UserCallbacks GetUserCallbacks(ARMul_State* interpeter_state) {
+static Dynarmic::UserCallbacks GetUserCallbacks(
+    const std::shared_ptr<ARMul_State>& interpeter_state) {
     Dynarmic::UserCallbacks user_callbacks{};
     user_callbacks.InterpreterFallback = &InterpreterFallback;
-    user_callbacks.user_arg = static_cast<void*>(interpeter_state);
+    user_callbacks.user_arg = static_cast<void*>(interpeter_state.get());
     user_callbacks.CallSVC = &SVC::CallSVC;
     user_callbacks.IsReadOnlyMemory = &IsReadOnlyMemory;
     user_callbacks.MemoryReadCode = &Memory::Read32;
@@ -55,12 +57,13 @@ static Dynarmic::UserCallbacks GetUserCallbacks(ARMul_State* interpeter_state) {
     user_callbacks.MemoryWrite32 = &Memory::Write32;
     user_callbacks.MemoryWrite64 = &Memory::Write64;
     user_callbacks.page_table = Memory::GetCurrentPageTablePointers();
+    user_callbacks.coprocessors[15] = std::make_shared<DynarmicCP15>(interpeter_state);
     return user_callbacks;
 }
 
 ARM_Dynarmic::ARM_Dynarmic(PrivilegeMode initial_mode) {
-    interpreter_state = std::make_unique<ARMul_State>(initial_mode);
+    interpreter_state = std::make_shared<ARMul_State>(initial_mode);
-    jit = std::make_unique<Dynarmic::Jit>(GetUserCallbacks(interpreter_state.get()));
+    jit = std::make_unique<Dynarmic::Jit>(GetUserCallbacks(interpreter_state));
 }
 
 void ARM_Dynarmic::SetPC(u32 pc) {

src/core/arm/dynarmic/arm_dynarmic.h

@@ -39,5 +39,5 @@ public:
 
 private:
     std::unique_ptr<Dynarmic::Jit> jit;
-    std::unique_ptr<ARMul_State> interpreter_state;
+    std::shared_ptr<ARMul_State> interpreter_state;
 };

src/core/arm/dynarmic/arm_dynarmic_cp15.cpp

@@ -0,0 +1,88 @@
+// Copyright 2017 Citra Emulator Project
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#include "core/arm/dynarmic/arm_dynarmic_cp15.h"
+#include "core/arm/skyeye_common/arm_regformat.h"
+#include "core/arm/skyeye_common/armstate.h"
+
+using Callback = Dynarmic::Coprocessor::Callback;
+using CallbackOrAccessOneWord = Dynarmic::Coprocessor::CallbackOrAccessOneWord;
+using CallbackOrAccessTwoWords = Dynarmic::Coprocessor::CallbackOrAccessTwoWords;
+
+DynarmicCP15::DynarmicCP15(const std::shared_ptr<ARMul_State>& state) : interpreter_state(state) {}
+
+DynarmicCP15::~DynarmicCP15() = default;
+
+boost::optional<Callback> DynarmicCP15::CompileInternalOperation(bool two, unsigned opc1,
+                                                                 CoprocReg CRd, CoprocReg CRn,
+                                                                 CoprocReg CRm, unsigned opc2) {
+    return boost::none;
+}
+
+CallbackOrAccessOneWord DynarmicCP15::CompileSendOneWord(bool two, unsigned opc1, CoprocReg CRn,
+                                                         CoprocReg CRm, unsigned opc2) {
+    // TODO(merry): Privileged CP15 registers
+
+    if (!two && CRn == CoprocReg::C7 && opc1 == 0 && CRm == CoprocReg::C5 && opc2 == 4) {
+        // This is a dummy write, we ignore the value written here.
+        return &interpreter_state->CP15[CP15_FLUSH_PREFETCH_BUFFER];
+    }
+
+    if (!two && CRn == CoprocReg::C7 && opc1 == 0 && CRm == CoprocReg::C10) {
+        switch (opc2) {
+        case 4:
+            // This is a dummy write, we ignore the value written here.
+            return &interpreter_state->CP15[CP15_DATA_SYNC_BARRIER];
+        case 5:
+            // This is a dummy write, we ignore the value written here.
+            return &interpreter_state->CP15[CP15_DATA_MEMORY_BARRIER];
+        default:
+            return boost::blank{};
+        }
+    }
+
+    if (!two && CRn == CoprocReg::C13 && opc1 == 0 && CRm == CoprocReg::C0 && opc2 == 2) {
+        return &interpreter_state->CP15[CP15_THREAD_UPRW];
+    }
+
+    return boost::blank{};
+}
+
+CallbackOrAccessTwoWords DynarmicCP15::CompileSendTwoWords(bool two, unsigned opc, CoprocReg CRm) {
+    return boost::blank{};
+}
+
+CallbackOrAccessOneWord DynarmicCP15::CompileGetOneWord(bool two, unsigned opc1, CoprocReg CRn,
+                                                        CoprocReg CRm, unsigned opc2) {
+    // TODO(merry): Privileged CP15 registers
+
+    if (!two && CRn == CoprocReg::C13 && opc1 == 0 && CRm == CoprocReg::C0) {
+        switch (opc2) {
+        case 2:
+            return &interpreter_state->CP15[CP15_THREAD_UPRW];
+        case 3:
+            return &interpreter_state->CP15[CP15_THREAD_URO];
+        default:
+            return boost::blank{};
+        }
+    }
+
+    return boost::blank{};
+}
+
+CallbackOrAccessTwoWords DynarmicCP15::CompileGetTwoWords(bool two, unsigned opc, CoprocReg CRm) {
+    return boost::blank{};
+}
+
+boost::optional<Callback> DynarmicCP15::CompileLoadWords(bool two, bool long_transfer,
+                                                         CoprocReg CRd,
+                                                         boost::optional<u8> option) {
+    return boost::none;
+}
+
+boost::optional<Callback> DynarmicCP15::CompileStoreWords(bool two, bool long_transfer,
+                                                          CoprocReg CRd,
+                                                          boost::optional<u8> option) {
+    return boost::none;
+}

src/core/arm/dynarmic/arm_dynarmic_cp15.h

@@ -0,0 +1,32 @@
+// Copyright 2017 Citra Emulator Project
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#include <memory>
+#include <dynarmic/coprocessor.h>
+#include "common/common_types.h"
+
+struct ARMul_State;
+
+class DynarmicCP15 final : public Dynarmic::Coprocessor {
+public:
+    explicit DynarmicCP15(const std::shared_ptr<ARMul_State>&);
+    ~DynarmicCP15() override;
+
+    boost::optional<Callback> CompileInternalOperation(bool two, unsigned opc1, CoprocReg CRd,
+                                                       CoprocReg CRn, CoprocReg CRm,
+                                                       unsigned opc2) override;
+    CallbackOrAccessOneWord CompileSendOneWord(bool two, unsigned opc1, CoprocReg CRn,
+                                               CoprocReg CRm, unsigned opc2) override;
+    CallbackOrAccessTwoWords CompileSendTwoWords(bool two, unsigned opc, CoprocReg CRm) override;
+    CallbackOrAccessOneWord CompileGetOneWord(bool two, unsigned opc1, CoprocReg CRn, CoprocReg CRm,
+                                              unsigned opc2) override;
+    CallbackOrAccessTwoWords CompileGetTwoWords(bool two, unsigned opc, CoprocReg CRm) override;
+    boost::optional<Callback> CompileLoadWords(bool two, bool long_transfer, CoprocReg CRd,
+                                               boost::optional<u8> option) override;
+    boost::optional<Callback> CompileStoreWords(bool two, bool long_transfer, CoprocReg CRd,
+                                                boost::optional<u8> option) override;
+
+private:
+    std::shared_ptr<ARMul_State> interpreter_state;
+};