1 files changed, 124 insertions, 0 deletions
diff --git a/src/core/hle/kernel/svc/svc_process.cpp b/src/core/hle/kernel/svc/svc_process.cpp
new file mode 100644
index 000000000..d6c8b4561
--- /dev/null
+++ b/src/core/hle/kernel/svc/svc_process.cpp
@@ -0,0 +1,124 @@
+// SPDX-FileCopyrightText: Copyright 2023 yuzu Emulator Project
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#include "core/core.h"
+#include "core/hle/kernel/k_process.h"
+#include "core/hle/kernel/svc.h"
+
+namespace Kernel::Svc {
+
+/// Exits the current process
+void ExitProcess(Core::System& system) {
+    auto* current_process = system.Kernel().CurrentProcess();
+
+    LOG_INFO(Kernel_SVC, "Process {} exiting", current_process->GetProcessID());
+    ASSERT_MSG(current_process->GetState() == KProcess::State::Running,
+               "Process has already exited");
+
+    system.Exit();
+}
+
+void ExitProcess32(Core::System& system) {
+    ExitProcess(system);
+}
+
+/// Gets the ID of the specified process or a specified thread's owning process.
+Result GetProcessId(Core::System& system, u64* out_process_id, Handle handle) {
+    LOG_DEBUG(Kernel_SVC, "called handle=0x{:08X}", handle);
+
+    // Get the object from the handle table.
+    KScopedAutoObject obj =
+        system.Kernel().CurrentProcess()->GetHandleTable().GetObject<KAutoObject>(
+            static_cast<Handle>(handle));
+    R_UNLESS(obj.IsNotNull(), ResultInvalidHandle);
+
+    // Get the process from the object.
+    KProcess* process = nullptr;
+    if (KProcess* p = obj->DynamicCast<KProcess*>(); p != nullptr) {
+        // The object is a process, so we can use it directly.
+        process = p;
+    } else if (KThread* t = obj->DynamicCast<KThread*>(); t != nullptr) {
+        // The object is a thread, so we want to use its parent.
+        process = reinterpret_cast<KThread*>(obj.GetPointerUnsafe())->GetOwnerProcess();
+    } else {
+        // TODO(bunnei): This should also handle debug objects before returning.
+        UNIMPLEMENTED_MSG("Debug objects not implemented");
+    }
+
+    // Make sure the target process exists.
+    R_UNLESS(process != nullptr, ResultInvalidHandle);
+
+    // Get the process id.
+    *out_process_id = process->GetId();
+
+    return ResultSuccess;
+}
+
+Result GetProcessId32(Core::System& system, u32* out_process_id_low, u32* out_process_id_high,
+                      Handle handle) {
+    u64 out_process_id{};
+    const auto result = GetProcessId(system, &out_process_id, handle);
+    *out_process_id_low = static_cast<u32>(out_process_id);
+    *out_process_id_high = static_cast<u32>(out_process_id >> 32);
+    return result;
+}
+
+Result GetProcessList(Core::System& system, u32* out_num_processes, VAddr out_process_ids,
+                      u32 out_process_ids_size) {
+    LOG_DEBUG(Kernel_SVC, "called. out_process_ids=0x{:016X}, out_process_ids_size={}",
+              out_process_ids, out_process_ids_size);
+
+    // If the supplied size is negative or greater than INT32_MAX / sizeof(u64), bail.
+    if ((out_process_ids_size & 0xF0000000) != 0) {
+        LOG_ERROR(Kernel_SVC,
+                  "Supplied size outside [0, 0x0FFFFFFF] range. out_process_ids_size={}",
+                  out_process_ids_size);
+        return ResultOutOfRange;
+    }
+
+    const auto& kernel = system.Kernel();
+    const auto total_copy_size = out_process_ids_size * sizeof(u64);
+
+    if (out_process_ids_size > 0 && !kernel.CurrentProcess()->PageTable().IsInsideAddressSpace(
+                                        out_process_ids, total_copy_size)) {
+        LOG_ERROR(Kernel_SVC, "Address range outside address space. begin=0x{:016X}, end=0x{:016X}",
+                  out_process_ids, out_process_ids + total_copy_size);
+        return ResultInvalidCurrentMemory;
+    }
+
+    auto& memory = system.Memory();
+    const auto& process_list = kernel.GetProcessList();
+    const auto num_processes = process_list.size();
+    const auto copy_amount = std::min(std::size_t{out_process_ids_size}, num_processes);
+
+    for (std::size_t i = 0; i < copy_amount; ++i) {
+        memory.Write64(out_process_ids, process_list[i]->GetProcessID());
+        out_process_ids += sizeof(u64);
+    }
+
+    *out_num_processes = static_cast<u32>(num_processes);
+    return ResultSuccess;
+}
+
+Result GetProcessInfo(Core::System& system, u64* out, Handle process_handle, u32 type) {
+    LOG_DEBUG(Kernel_SVC, "called, handle=0x{:08X}, type=0x{:X}", process_handle, type);
+
+    const auto& handle_table = system.Kernel().CurrentProcess()->GetHandleTable();
+    KScopedAutoObject process = handle_table.GetObject<KProcess>(process_handle);
+    if (process.IsNull()) {
+        LOG_ERROR(Kernel_SVC, "Process handle does not exist, process_handle=0x{:08X}",
+                  process_handle);
+        return ResultInvalidHandle;
+    }
+
+    const auto info_type = static_cast<ProcessInfoType>(type);
+    if (info_type != ProcessInfoType::ProcessState) {
+        LOG_ERROR(Kernel_SVC, "Expected info_type to be ProcessState but got {} instead", type);
+        return ResultInvalidEnumValue;
+    }
+
+    *out = static_cast<u64>(process->GetState());
+    return ResultSuccess;
+}
+
+} // namespace Kernel::Svc