erpt: reimplement the sysmodule (#875)

* erpt: reimplement the sysmodule

* fatal: update for latest bindings

* erpt: amend logic for culling orphan attachments

libraries/libstratosphere/source/psc/psc_pm_module.os.horizon.cpp

@@ -0,0 +1,74 @@
+/*
+ * Copyright (c) 2018-2020 Atmosphère-NX
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+#include <stratosphere.hpp>
+#include "psc_remote_pm_module.hpp"
+
+namespace ams::psc {
+
+    PmModule::PmModule() : intf(nullptr), initialized(false), reserved(0) { /* ... */ }
+
+    PmModule::~PmModule() {
+        if (this->initialized) {
+            this->intf = nullptr;
+            os::DestroySystemEvent(this->system_event.GetBase());
+        }
+    }
+
+    Result PmModule::Initialize(const PmModuleId mid, const PmModuleId *dependencies, u32 dependency_count, os::EventClearMode clear_mode) {
+        R_UNLESS(!this->initialized, psc::ResultAlreadyInitialized());
+
+        static_assert(sizeof(*dependencies) == sizeof(u16));
+        ::PscPmModule module;
+        R_TRY(::pscmGetPmModule(std::addressof(module), static_cast<::PscPmModuleId>(mid), reinterpret_cast<const u16 *>(dependencies), dependency_count, clear_mode == os::EventClearMode_AutoClear));
+
+        this->intf = std::make_shared<RemotePmModule>(module);
+        this->system_event.AttachReadableHandle(module.event.revent, false, clear_mode);
+        this->initialized = true;
+        return ResultSuccess();
+    }
+
+    Result PmModule::Finalize() {
+        R_UNLESS(this->initialized, psc::ResultNotInitialized());
+
+        R_TRY(this->intf->Finalize());
+        this->intf = nullptr;
+        os::DestroySystemEvent(this->system_event.GetBase());
+        this->initialized = false;
+        return ResultSuccess();
+    }
+
+    Result PmModule::GetRequest(PmState *out_state, PmFlagSet *out_flags) {
+        R_UNLESS(this->initialized, psc::ResultNotInitialized());
+
+        return this->intf->GetRequest(out_state, out_flags);
+    }
+
+    Result PmModule::Acknowledge(PmState state, Result res) {
+        R_ABORT_UNLESS(res);
+        R_UNLESS(this->initialized, psc::ResultNotInitialized());
+
+        if (hos::GetVersion() >= hos::Version_600) {
+            return this->intf->AcknowledgeEx(state);
+        } else {
+            return this->intf->Acknowledge();
+        }
+    }
+
+    os::SystemEvent *PmModule::GetEventPointer() {
+        return std::addressof(this->system_event);
+    }
+
+}

libraries/libstratosphere/source/psc/psc_remote_pm_module.hpp

@@ -0,0 +1,58 @@
+/*
+ * Copyright (c) 2018-2020 Atmosphère-NX
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+#pragma once
+#include <stratosphere.hpp>
+
+namespace ams::psc {
+
+    class RemotePmModule final : public psc::sf::IPmModule {
+        NON_COPYABLE(RemotePmModule);
+        NON_MOVEABLE(RemotePmModule);
+        private:
+            ::PscPmModule module;
+        public:
+            constexpr RemotePmModule(const ::PscPmModule &m) : module(m) { /* ... */ }
+            virtual ~RemotePmModule() override {
+                ::pscPmModuleClose(std::addressof(this->module));
+            }
+
+            virtual Result Initialize(ams::sf::OutCopyHandle out, psc::PmModuleId module_id, const ams::sf::InBuffer &child_list) override final {
+                /* NOTE: This functionality is already implemented by the libnx command we use to instantiate the PscPmModule. */
+                AMS_ABORT();
+            }
+
+            virtual Result GetRequest(ams::sf::Out<PmState> out_state, ams::sf::Out<PmFlagSet> out_flags) override final {
+                static_assert(sizeof(PmState) == sizeof(::PscPmState));
+                static_assert(sizeof(PmFlagSet) == sizeof(u32));
+                return ::pscPmModuleGetRequest(std::addressof(this->module), reinterpret_cast<::PscPmState *>(out_state.GetPointer()), reinterpret_cast<u32 *>(out_flags.GetPointer()));
+            }
+
+            virtual Result Acknowledge() override final {
+                /* NOTE: libnx does not separate acknowledge/acknowledgeEx. */
+                return ::pscPmModuleAcknowledge(std::addressof(this->module), static_cast<::PscPmState>(0));
+            }
+
+            virtual Result Finalize() override final {
+                return ::pscPmModuleFinalize(std::addressof(this->module));
+            }
+
+            virtual Result AcknowledgeEx(PmState state) override final {
+                static_assert(sizeof(state) == sizeof(::PscPmState));
+                return ::pscPmModuleAcknowledge(std::addressof(this->module), static_cast<::PscPmState>(state));
+            }
+    };
+
+}