core: Prepare various classes for memory read/write migration

Amends a few interfaces to be able to handle the migration over to the
new Memory class by passing the class by reference as a function
parameter where necessary.

Notably, within the filesystem services, this eliminates two ReadBlock()
calls by using the helper functions of HLERequestContext to do that for
us.

src/core/arm/arm_interface.cpp

@@ -13,7 +13,6 @@
 #include "core/memory.h"
 
 namespace Core {
-
 namespace {
 
 constexpr u64 ELF_DYNAMIC_TAG_NULL = 0;
@@ -156,7 +155,7 @@ std::vector<ARM_Interface::BacktraceEntry> ARM_Interface::GetBacktrace() const {
     }
 
     std::map<VAddr, std::string> modules;
-    auto& loader{System::GetInstance().GetAppLoader()};
+    auto& loader{system.GetAppLoader()};
     if (loader.ReadNSOModules(modules) != Loader::ResultStatus::Success) {
         return {};
     }

src/core/arm/arm_interface.h

@@ -17,11 +17,13 @@ enum class VMAPermission : u8;
 }
 
 namespace Core {
+class System;
 
 /// Generic ARMv8 CPU interface
 class ARM_Interface : NonCopyable {
 public:
-    virtual ~ARM_Interface() {}
+    explicit ARM_Interface(System& system_) : system{system_} {}
+    virtual ~ARM_Interface() = default;
 
     struct ThreadContext {
         std::array<u64, 31> cpu_registers;
@@ -163,6 +165,10 @@ public:
     /// fp+0 : pointer to previous frame record
     /// fp+8 : value of lr for frame
     void LogBacktrace() const;
+
+protected:
+    /// System context that this ARM interface is running under.
+    System& system;
 };
 
 } // namespace Core

src/core/arm/dynarmic/arm_dynarmic.cpp

@@ -28,6 +28,7 @@ public:
     explicit ARM_Dynarmic_Callbacks(ARM_Dynarmic& parent) : parent(parent) {}
 
     u8 MemoryRead8(u64 vaddr) override {
+        auto& s = parent.system;
         return Memory::Read8(vaddr);
     }
     u16 MemoryRead16(u64 vaddr) override {
@@ -171,9 +172,10 @@ void ARM_Dynarmic::Step() {
 
 ARM_Dynarmic::ARM_Dynarmic(System& system, ExclusiveMonitor& exclusive_monitor,
                            std::size_t core_index)
-    : cb(std::make_unique<ARM_Dynarmic_Callbacks>(*this)), inner_unicorn{system},
-      core_index{core_index}, system{system},
-      exclusive_monitor{dynamic_cast<DynarmicExclusiveMonitor&>(exclusive_monitor)} {}
+    : ARM_Interface{system},
+      cb(std::make_unique<ARM_Dynarmic_Callbacks>(*this)), inner_unicorn{system},
+      core_index{core_index}, exclusive_monitor{
+                                  dynamic_cast<DynarmicExclusiveMonitor&>(exclusive_monitor)} {}
 
 ARM_Dynarmic::~ARM_Dynarmic() = default;
 

src/core/arm/dynarmic/arm_dynarmic.h

@@ -58,7 +58,6 @@ private:
     ARM_Unicorn inner_unicorn;
 
     std::size_t core_index;
-    System& system;
     DynarmicExclusiveMonitor& exclusive_monitor;
 };
 

src/core/arm/unicorn/arm_unicorn.cpp

@@ -60,7 +60,7 @@ static bool UnmappedMemoryHook(uc_engine* uc, uc_mem_type type, u64 addr, int si
     return false;
 }
 
-ARM_Unicorn::ARM_Unicorn(System& system) : system{system} {
+ARM_Unicorn::ARM_Unicorn(System& system) : ARM_Interface{system} {
     CHECKED(uc_open(UC_ARCH_ARM64, UC_MODE_ARM, &uc));
 
     auto fpv = 3 << 20;

src/core/arm/unicorn/arm_unicorn.h

@@ -45,7 +45,6 @@ private:
     static void InterruptHook(uc_engine* uc, u32 int_no, void* user_data);
 
     uc_engine* uc{};
-    System& system;
     GDBStub::BreakpointAddress last_bkpt{};
     bool last_bkpt_hit = false;
 };

src/core/hle/kernel/client_session.cpp

@@ -21,10 +21,10 @@ ClientSession::~ClientSession() {
     }
 }
 
-ResultCode ClientSession::SendSyncRequest(Thread* thread) {
+ResultCode ClientSession::SendSyncRequest(Thread* thread, Memory::Memory& memory) {
     // Signal the server session that new data is available
     if (auto server = parent->server.lock()) {
-        return server->HandleSyncRequest(SharedFrom(thread));
+        return server->HandleSyncRequest(SharedFrom(thread), memory);
     }
 
     return ERR_SESSION_CLOSED_BY_REMOTE;

src/core/hle/kernel/client_session.h

@@ -10,6 +10,10 @@
 
 union ResultCode;
 
+namespace Memory {
+class Memory;
+}
+
 namespace Kernel {
 
 class KernelCore;
@@ -37,7 +41,7 @@ public:
         return HANDLE_TYPE;
     }
 
-    ResultCode SendSyncRequest(Thread* thread);
+    ResultCode SendSyncRequest(Thread* thread, Memory::Memory& memory);
 
 private:
     /// The parent session, which links to the server endpoint.

src/core/hle/kernel/server_session.cpp

@@ -127,7 +127,8 @@ ResultCode ServerSession::HandleDomainSyncRequest(Kernel::HLERequestContext& con
     return RESULT_SUCCESS;
 }
 
-ResultCode ServerSession::HandleSyncRequest(std::shared_ptr<Thread> thread) {
+ResultCode ServerSession::HandleSyncRequest(std::shared_ptr<Thread> thread,
+                                            Memory::Memory& memory) {
     // The ServerSession received a sync request, this means that there's new data available
     // from its ClientSession, so wake up any threads that may be waiting on a svcReplyAndReceive or
     // similar.

src/core/hle/kernel/server_session.h

@@ -13,6 +13,10 @@
 #include "core/hle/kernel/wait_object.h"
 #include "core/hle/result.h"
 
+namespace Memory {
+class Memory;
+}
+
 namespace Kernel {
 
 class ClientPort;
@@ -85,10 +89,13 @@ public:
 
     /**
      * Handle a sync request from the emulated application.
+     *
      * @param thread Thread that initiated the request.
+     * @param memory Memory context to handle the sync request under.
+     *
      * @returns ResultCode from the operation.
      */
-    ResultCode HandleSyncRequest(std::shared_ptr<Thread> thread);
+    ResultCode HandleSyncRequest(std::shared_ptr<Thread> thread, Memory::Memory& memory);
 
     bool ShouldWait(const Thread* thread) const override;
 

src/core/hle/kernel/svc.cpp

@@ -383,7 +383,7 @@ static ResultCode SendSyncRequest(Core::System& system, Handle handle) {
 
     // TODO(Subv): svcSendSyncRequest should put the caller thread to sleep while the server
     // responds and cause a reschedule.
-    return session->SendSyncRequest(system.CurrentScheduler().GetCurrentThread());
+    return session->SendSyncRequest(system.CurrentScheduler().GetCurrentThread(), system.Memory());
 }
 
 /// Get the ID for the specified thread.

src/core/hle/service/audio/audren_u.cpp

@@ -49,8 +49,9 @@ public:
 
         system_event =
             Kernel::WritableEvent::CreateEventPair(system.Kernel(), "IAudioRenderer:SystemEvent");
-        renderer = std::make_unique<AudioCore::AudioRenderer>(
-            system.CoreTiming(), audren_params, system_event.writable, instance_number);
+        renderer = std::make_unique<AudioCore::AudioRenderer>(system.CoreTiming(), system.Memory(),
+                                                              audren_params, system_event.writable,
+                                                              instance_number);
     }
 
 private:

src/core/hle/service/filesystem/fsp_srv.cpp

@@ -391,13 +391,10 @@ public:
     }
 
     void RenameFile(Kernel::HLERequestContext& ctx) {
-        std::vector<u8> buffer;
-        buffer.resize(ctx.BufferDescriptorX()[0].Size());
-        Memory::ReadBlock(ctx.BufferDescriptorX()[0].Address(), buffer.data(), buffer.size());
+        std::vector<u8> buffer = ctx.ReadBuffer(0);
         const std::string src_name = Common::StringFromBuffer(buffer);
 
-        buffer.resize(ctx.BufferDescriptorX()[1].Size());
-        Memory::ReadBlock(ctx.BufferDescriptorX()[1].Address(), buffer.data(), buffer.size());
+        buffer = ctx.ReadBuffer(1);
         const std::string dst_name = Common::StringFromBuffer(buffer);
 
         LOG_DEBUG(Service_FS, "called. file '{}' to file '{}'", src_name, dst_name);

src/core/hle/service/lm/lm.cpp

@@ -17,7 +17,8 @@ namespace Service::LM {
 
 class ILogger final : public ServiceFramework<ILogger> {
 public:
-    ILogger(Manager& manager) : ServiceFramework("ILogger"), manager(manager) {
+    explicit ILogger(Manager& manager_, Memory::Memory& memory_)
+        : ServiceFramework("ILogger"), manager{manager_}, memory{memory_} {
         static const FunctionInfo functions[] = {
             {0, &ILogger::Log, "Log"},
             {1, &ILogger::SetDestination, "SetDestination"},
@@ -74,11 +75,13 @@ private:
     }
 
     Manager& manager;
+    Memory::Memory& memory;
 };
 
 class LM final : public ServiceFramework<LM> {
 public:
-    explicit LM(Manager& manager) : ServiceFramework{"lm"}, manager(manager) {
+    explicit LM(Manager& manager_, Memory::Memory& memory_)
+        : ServiceFramework{"lm"}, manager{manager_}, memory{memory_} {
         // clang-format off
         static const FunctionInfo functions[] = {
             {0, &LM::OpenLogger, "OpenLogger"},
@@ -94,14 +97,16 @@ private:
 
         IPC::ResponseBuilder rb{ctx, 2, 0, 1};
         rb.Push(RESULT_SUCCESS);
-        rb.PushIpcInterface<ILogger>(manager);
+        rb.PushIpcInterface<ILogger>(manager, memory);
     }
 
     Manager& manager;
+    Memory::Memory& memory;
 };
 
 void InstallInterfaces(Core::System& system) {
-    std::make_shared<LM>(system.GetLogManager())->InstallAsService(system.ServiceManager());
+    std::make_shared<LM>(system.GetLogManager(), system.Memory())
+        ->InstallAsService(system.ServiceManager());
 }
 
 } // namespace Service::LM

src/core/reporter.cpp

@@ -147,7 +147,7 @@ json GetFullDataAuto(const std::string& timestamp, u64 title_id, Core::System& s
 }
 
 template <bool read_value, typename DescriptorType>
-json GetHLEBufferDescriptorData(const std::vector<DescriptorType>& buffer) {
+json GetHLEBufferDescriptorData(const std::vector<DescriptorType>& buffer, Memory::Memory& memory) {
     auto buffer_out = json::array();
     for (const auto& desc : buffer) {
         auto entry = json{
@@ -167,7 +167,7 @@ json GetHLEBufferDescriptorData(const std::vector<DescriptorType>& buffer) {
     return buffer_out;
 }
 
-json GetHLERequestContextData(Kernel::HLERequestContext& ctx) {
+json GetHLERequestContextData(Kernel::HLERequestContext& ctx, Memory::Memory& memory) {
     json out;
 
     auto cmd_buf = json::array();
@@ -177,10 +177,10 @@ json GetHLERequestContextData(Kernel::HLERequestContext& ctx) {
 
     out["command_buffer"] = std::move(cmd_buf);
 
-    out["buffer_descriptor_a"] = GetHLEBufferDescriptorData<true>(ctx.BufferDescriptorA());
-    out["buffer_descriptor_b"] = GetHLEBufferDescriptorData<false>(ctx.BufferDescriptorB());
-    out["buffer_descriptor_c"] = GetHLEBufferDescriptorData<false>(ctx.BufferDescriptorC());
-    out["buffer_descriptor_x"] = GetHLEBufferDescriptorData<true>(ctx.BufferDescriptorX());
+    out["buffer_descriptor_a"] = GetHLEBufferDescriptorData<true>(ctx.BufferDescriptorA(), memory);
+    out["buffer_descriptor_b"] = GetHLEBufferDescriptorData<false>(ctx.BufferDescriptorB(), memory);
+    out["buffer_descriptor_c"] = GetHLEBufferDescriptorData<false>(ctx.BufferDescriptorC(), memory);
+    out["buffer_descriptor_x"] = GetHLEBufferDescriptorData<true>(ctx.BufferDescriptorX(), memory);
 
     return out;
 }
@@ -259,7 +259,7 @@ void Reporter::SaveUnimplementedFunctionReport(Kernel::HLERequestContext& ctx, u
     const auto title_id = system.CurrentProcess()->GetTitleID();
     auto out = GetFullDataAuto(timestamp, title_id, system);
 
-    auto function_out = GetHLERequestContextData(ctx);
+    auto function_out = GetHLERequestContextData(ctx, system.Memory());
     function_out["command_id"] = command_id;
     function_out["function_name"] = name;
     function_out["service_name"] = service_name;

src/core/tools/freezer.cpp

@@ -11,12 +11,11 @@
 #include "core/tools/freezer.h"
 
 namespace Tools {
-
 namespace {
 
 constexpr s64 MEMORY_FREEZER_TICKS = static_cast<s64>(Core::Timing::BASE_CLOCK_RATE / 60);
 
-u64 MemoryReadWidth(u32 width, VAddr addr) {
+u64 MemoryReadWidth(Memory::Memory& memory, u32 width, VAddr addr) {
     switch (width) {
     case 1:
         return Memory::Read8(addr);
@@ -32,7 +31,7 @@ u64 MemoryReadWidth(u32 width, VAddr addr) {
     }
 }
 
-void MemoryWriteWidth(u32 width, VAddr addr, u64 value) {
+void MemoryWriteWidth(Memory::Memory& memory, u32 width, VAddr addr, u64 value) {
     switch (width) {
     case 1:
         Memory::Write8(addr, static_cast<u8>(value));
@@ -53,7 +52,8 @@ void MemoryWriteWidth(u32 width, VAddr addr, u64 value) {
 
 } // Anonymous namespace
 
-Freezer::Freezer(Core::Timing::CoreTiming& core_timing) : core_timing(core_timing) {
+Freezer::Freezer(Core::Timing::CoreTiming& core_timing_, Memory::Memory& memory_)
+    : core_timing{core_timing_}, memory{memory_} {
     event = Core::Timing::CreateEvent(
         "MemoryFreezer::FrameCallback",
         [this](u64 userdata, s64 cycles_late) { FrameCallback(userdata, cycles_late); });
@@ -89,7 +89,7 @@ void Freezer::Clear() {
 u64 Freezer::Freeze(VAddr address, u32 width) {
     std::lock_guard lock{entries_mutex};
 
-    const auto current_value = MemoryReadWidth(width, address);
+    const auto current_value = MemoryReadWidth(memory, width, address);
     entries.push_back({address, width, current_value});
 
     LOG_DEBUG(Common_Memory,
@@ -169,7 +169,7 @@ void Freezer::FrameCallback(u64 userdata, s64 cycles_late) {
         LOG_DEBUG(Common_Memory,
                   "Enforcing memory freeze at address={:016X}, value={:016X}, width={:02X}",
                   entry.address, entry.value, entry.width);
-        MemoryWriteWidth(entry.width, entry.address, entry.value);
+        MemoryWriteWidth(memory, entry.width, entry.address, entry.value);
     }
 
     core_timing.ScheduleEvent(MEMORY_FREEZER_TICKS - cycles_late, event);
@@ -181,7 +181,7 @@ void Freezer::FillEntryReads() {
     LOG_DEBUG(Common_Memory, "Updating memory freeze entries to current values.");
 
     for (auto& entry : entries) {
-        entry.value = MemoryReadWidth(entry.width, entry.address);
+        entry.value = MemoryReadWidth(memory, entry.width, entry.address);
     }
 }
 

src/core/tools/freezer.h

@@ -16,6 +16,10 @@ class CoreTiming;
 struct EventType;
 } // namespace Core::Timing
 
+namespace Memory {
+class Memory;
+}
+
 namespace Tools {
 
 /**
@@ -34,7 +38,7 @@ public:
         u64 value;
     };
 
-    explicit Freezer(Core::Timing::CoreTiming& core_timing);
+    explicit Freezer(Core::Timing::CoreTiming& core_timing_, Memory::Memory& memory_);
     ~Freezer();
 
     // Enables or disables the entire memory freezer.
@@ -78,6 +82,7 @@ private:
 
     std::shared_ptr<Core::Timing::EventType> event;
     Core::Timing::CoreTiming& core_timing;
+    Memory::Memory& memory;
 };
 
 } // namespace Tools