pgl: Reimplement the pgl sysmodule (#896)

* pgl: add skeleton folder to stratosphere * pgl: Add service interface for IShellInterface * pgl: begin skeletoning shell service, implement two commands. * pgl: Implement three more commands. * pgl: implement bool tracking commands * pgl: Implement TriggerApplicationSnapShotDumper * pgl: implement InitializeProcessControlTask * pgl: Implement pgl::srv::Initialize * pgl: Implement main() * pgl: Implement (Get)ShellEventObserver * pgl: implement LaunchProgramFromHost, GetHostContentMetaInfo * pgl: Implement ProcessControlTask * settings: fix duplicate object name * pgl: fix minor bugs in impl
2025-05-28 05:34:11 -04:00 · 2020-04-16 19:55:47 -07:00 · 2020-04-16 19:55:47 -07:00 · 98cc051387
commit 98cc051387
parent f2944d36ba
42 changed files with 2218 additions and 57 deletions
--- a/stratosphere/pgl/source/pgl_main.cpp
+++ b/stratosphere/pgl/source/pgl_main.cpp
@ -0,0 +1,160 @@
+/*
+ * 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>
+
+extern "C" {
+    extern u32 __start__;
+
+    u32 __nx_applet_type = AppletType_None;
+    u32 __nx_fs_num_sessions = 1;
+
+    #define INNER_HEAP_SIZE 0x4000
+    size_t nx_inner_heap_size = INNER_HEAP_SIZE;
+    char   nx_inner_heap[INNER_HEAP_SIZE];
+
+    void __libnx_initheap(void);
+    void __appInit(void);
+    void __appExit(void);
+
+    /* Exception handling. */
+    alignas(16) u8 __nx_exception_stack[ams::os::MemoryPageSize];
+    u64 __nx_exception_stack_size = sizeof(__nx_exception_stack);
+    void __libnx_exception_handler(ThreadExceptionDump *ctx);
+}
+
+namespace ams {
+
+    ncm::ProgramId CurrentProgramId = ncm::SystemProgramId::Pgl;
+
+    namespace result {
+
+        bool CallFatalOnResultAssertion = false;
+
+    }
+
+}
+
+using namespace ams;
+
+void __libnx_exception_handler(ThreadExceptionDump *ctx) {
+    ams::CrashHandler(ctx);
+}
+
+namespace ams::pgl {
+
+    namespace {
+
+        /* pgl. */
+        constexpr size_t NumServers  = 1;
+        ams::sf::hipc::ServerManager<NumServers> g_server_manager;
+
+        constexpr sm::ServiceName ShellServiceName = sm::ServiceName::Encode("pgl");
+        constexpr size_t          ShellMaxSessions = 8; /* Official maximum is 8. */
+
+        /* TODO: C++20 constinit */ pgl::srv::ShellInterface g_shell_interface;
+
+        ALWAYS_INLINE std::shared_ptr<pgl::srv::ShellInterface> GetSharedPointerToShellInterface() {
+            return ams::sf::ServiceObjectTraits<pgl::srv::ShellInterface>::SharedPointerHelper::GetEmptyDeleteSharedPointer(std::addressof(g_shell_interface));
+        }
+
+        void RegisterServiceSession() {
+            R_ABORT_UNLESS(g_server_manager.RegisterServer<pgl::srv::ShellInterface>(ShellServiceName, ShellMaxSessions, GetSharedPointerToShellInterface()));
+        }
+
+        void LoopProcess() {
+            g_server_manager.LoopProcess();
+        }
+
+        /* NOTE: Nintendo reserves only 0x2000 bytes for this heap, which is used "mostly" to allocate shell event observers. */
+        /* However, we would like very much for homebrew sysmodules to be able to subscribe to events if they so choose */
+        /* And so we will use a larger heap (32 KB). */
+        /* We should have a smaller memory footprint than N in the end, regardless. */
+        u8 g_heap_memory[32_KB];
+        TYPED_STORAGE(ams::sf::ExpHeapMemoryResource) g_heap_memory_resource;
+
+        void *Allocate(size_t size) {
+            return lmem::AllocateFromExpHeap(GetReference(g_heap_memory_resource).GetHandle(), size);
+        }
+
+        void Deallocate(void *p, size_t size) {
+            return lmem::FreeToExpHeap(GetReference(g_heap_memory_resource).GetHandle(), p);
+        }
+
+        void InitializeHeap() {
+            auto heap_handle = lmem::CreateExpHeap(g_heap_memory, sizeof(g_heap_memory), lmem::CreateOption_ThreadSafe);
+            new (GetPointer(g_heap_memory_resource)) ams::sf::ExpHeapMemoryResource(heap_handle);
+        }
+
+    }
+
+}
+
+void __libnx_initheap(void) {
+	void*  addr = nx_inner_heap;
+	size_t size = nx_inner_heap_size;
+
+	/* Newlib */
+	extern char* fake_heap_start;
+	extern char* fake_heap_end;
+
+	fake_heap_start = (char*)addr;
+	fake_heap_end   = (char*)addr + size;
+
+    ams::pgl::InitializeHeap();
+}
+
+void __appInit(void) {
+    hos::SetVersionForLibnx();
+
+    fs::SetAllocator(pgl::Allocate, pgl::Deallocate);
+
+    sm::DoWithSession([&]() {
+        R_ABORT_UNLESS(setInitialize());
+        R_ABORT_UNLESS(setsysInitialize());
+        R_ABORT_UNLESS(pmshellInitialize());
+        R_ABORT_UNLESS(ldrShellInitialize());
+        R_ABORT_UNLESS(lrInitialize());
+        R_ABORT_UNLESS(fsInitialize());
+    });
+
+    ams::CheckApiVersion();
+}
+
+void __appExit(void) {
+    fsExit();
+    lrExit();
+    ldrShellExit();
+    pmshellExit();
+    setsysExit();
+    setExit();
+}
+
+
+int main(int argc, char **argv)
+{
+    /* Register the pgl service. */
+    pgl::RegisterServiceSession();
+
+    /* Initialize the server library. */
+    pgl::srv::Initialize(std::addressof(pgl::g_shell_interface), GetPointer(pgl::g_heap_memory_resource));
+
+    /* Loop forever, servicing our services. */
+    pgl::LoopProcess();
+
+    /* Cleanup */
+    return 0;
+}
+