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https://github.com/skyline-emu/skyline.git
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Add String Support to IPC Push/Pop
This commit does some minor renaming/reordering in IPC and adds support for strings to IPC Push/Pop. It also fixes a tiny regression with the frametime display.
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@ -62,7 +62,7 @@ namespace skyline::gpu {
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if (frameTimestamp) {
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auto now = util::GetTimeNs();
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frametime = static_cast<u32>((now - frameTimestamp) / (constant::NsInSecond / 100)); // frametime / 100 is the real ms value, this is to retain the first two decimals
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frametime = static_cast<u32>((now - frameTimestamp) / 10000); // frametime / 100 is the real ms value, this is to retain the first two decimals
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fps = static_cast<u16>(constant::NsInSecond / (now - frameTimestamp));
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frameTimestamp = now;
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@ -143,7 +143,7 @@ namespace skyline::kernel::ipc {
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memset(tls, 0, constant::TlsIpcSize);
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auto header = reinterpret_cast<CommandHeader *>(pointer);
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header->rawSize = static_cast<u32>((sizeof(PayloadHeader) + argVec.size() + (domainObjects.size() * sizeof(KHandle)) + constant::IpcPaddingSum + (isDomain ? sizeof(DomainHeaderRequest) : 0)) / sizeof(u32)); // Size is in 32-bit units because Nintendo
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header->rawSize = static_cast<u32>((sizeof(PayloadHeader) + payload.size() + (domainObjects.size() * sizeof(KHandle)) + constant::IpcPaddingSum + (isDomain ? sizeof(DomainHeaderRequest) : 0)) / sizeof(u32)); // Size is in 32-bit units because Nintendo
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header->handleDesc = (!copyHandles.empty() || !moveHandles.empty());
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pointer += sizeof(CommandHeader);
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@ -174,15 +174,15 @@ namespace skyline::kernel::ipc {
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pointer += sizeof(DomainHeaderResponse);
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}
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auto payload = reinterpret_cast<PayloadHeader *>(pointer);
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payload->magic = util::MakeMagic<u32>("SFCO"); // SFCO is the magic in IPC responses
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payload->version = 1;
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payload->value = errorCode;
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auto payloadHeader = reinterpret_cast<PayloadHeader *>(pointer);
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payloadHeader->magic = util::MakeMagic<u32>("SFCO"); // SFCO is the magic in IPC responses
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payloadHeader->version = 1;
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payloadHeader->value = errorCode;
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pointer += sizeof(PayloadHeader);
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if (!argVec.empty())
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std::memcpy(pointer, argVec.data(), argVec.size());
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pointer += argVec.size();
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if (!payload.empty())
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std::memcpy(pointer, payload.data(), payload.size());
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pointer += payload.size();
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if (isDomain) {
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for (auto &domainObject : domainObjects) {
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@ -191,6 +191,6 @@ namespace skyline::kernel::ipc {
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}
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}
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state.logger->Debug("Output: Raw Size: {}, Command ID: 0x{:X}, Copy Handles: {}, Move Handles: {}", u32(header->rawSize), u32(payload->value), copyHandles.size(), moveHandles.size());
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state.logger->Debug("Output: Raw Size: {}, Command ID: 0x{:X}, Copy Handles: {}, Move Handles: {}", u32(header->rawSize), u32(payloadHeader->value), copyHandles.size(), moveHandles.size());
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}
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}
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@ -281,6 +281,16 @@ namespace skyline {
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return value;
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}
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/**
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* @brief This returns a std::string_view from the payload
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* @param size The length of the string (0 means the string is null terminated)
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*/
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inline std::string_view PopString(size_t size = 0) {
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auto view = size ? std::string_view(reinterpret_cast<const char*>(payloadOffset), size) : std::string_view(reinterpret_cast<const char*>(payloadOffset));
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payloadOffset += view.length();
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return view;
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}
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/**
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* @brief This skips an object to pop off the top
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* @tparam ValueType The type of the object to skip
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@ -296,8 +306,8 @@ namespace skyline {
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*/
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class IpcResponse {
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private:
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std::vector<u8> argVec; //!< This holds all of the contents to be pushed to the payload
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const DeviceState &state; //!< The state of the device
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std::vector<u8> payload; //!< This holds all of the contents to be pushed to the payload
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public:
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bool nWrite{}; //!< This is to signal the IPC handler to not write this, as it will be manually written
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@ -320,12 +330,22 @@ namespace skyline {
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*/
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template<typename ValueType>
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inline void Push(const ValueType &value) {
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argVec.reserve(argVec.size() + sizeof(ValueType));
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auto item = reinterpret_cast<const u8 *>(&value);
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for (uint index = 0; sizeof(ValueType) > index; index++) {
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argVec.push_back(*item);
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item++;
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}
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auto size = payload.size();
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payload.resize(size + sizeof(ValueType));
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std::memcpy(payload.data() + size, reinterpret_cast<const u8 *>(&value), sizeof(ValueType));
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}
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/**
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* @brief Writes a string to the payload
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* @param string The string to write to the payload
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*/
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template<>
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inline void Push(const std::string &string) {
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auto size = payload.size();
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payload.resize(size + string.size());
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std::memcpy(payload.data() + size, string.data(), string.size());
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}
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/**
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@ -12,7 +12,7 @@ namespace skyline::service::sm {
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void IUserInterface::Initialize(type::KSession &session, ipc::IpcRequest &request, ipc::IpcResponse &response) {}
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void IUserInterface::GetService(type::KSession &session, ipc::IpcRequest &request, ipc::IpcResponse &response) {
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std::string serviceName(reinterpret_cast<char *>(request.cmdArg));
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std::string serviceName(request.PopString());
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if (serviceName.empty()) {
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response.errorCode = constant::status::ServiceInvName;
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@ -41,7 +41,7 @@ namespace skyline::service::visrv {
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}
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void IApplicationDisplayService::OpenDisplay(type::KSession &session, ipc::IpcRequest &request, ipc::IpcResponse &response) {
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std::string displayName(reinterpret_cast<char *>(request.cmdArg));
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std::string displayName(request.PopString());
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state.logger->Debug("Setting display as: {}", displayName);
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state.os->serviceManager.GetService<hosbinder::IHOSBinderDriver>(Service::hosbinder_IHOSBinderDriver)->SetDisplay(displayName);
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