1 files changed, 55 insertions, 0 deletions

diff --git a/src/core/hle/kernel/svc/svc_query_memory.cpp b/src/core/hle/kernel/svc/svc_query_memory.cpp
new file mode 100644
index 000000000..aac3b2eca
--- /dev/null
+++ b/src/core/hle/kernel/svc/svc_query_memory.cpp
@@ -0,0 +1,55 @@
+// 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 {
+
+Result QueryMemory(Core::System& system, VAddr memory_info_address, VAddr page_info_address,
+                   VAddr query_address) {
+    LOG_TRACE(Kernel_SVC,
+              "called, memory_info_address=0x{:016X}, page_info_address=0x{:016X}, "
+              "query_address=0x{:016X}",
+              memory_info_address, page_info_address, query_address);
+
+    return QueryProcessMemory(system, memory_info_address, page_info_address, CurrentProcess,
+                              query_address);
+}
+
+Result QueryMemory32(Core::System& system, u32 memory_info_address, u32 page_info_address,
+                     u32 query_address) {
+    return QueryMemory(system, memory_info_address, page_info_address, query_address);
+}
+
+Result QueryProcessMemory(Core::System& system, VAddr memory_info_address, VAddr page_info_address,
+                          Handle process_handle, VAddr address) {
+    LOG_TRACE(Kernel_SVC, "called process=0x{:08X} address={:X}", process_handle, address);
+    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;
+    }
+
+    auto& memory{system.Memory()};
+    const auto memory_info{process->PageTable().QueryInfo(address).GetSvcMemoryInfo()};
+
+    memory.Write64(memory_info_address + 0x00, memory_info.base_address);
+    memory.Write64(memory_info_address + 0x08, memory_info.size);
+    memory.Write32(memory_info_address + 0x10, static_cast<u32>(memory_info.state) & 0xff);
+    memory.Write32(memory_info_address + 0x14, static_cast<u32>(memory_info.attribute));
+    memory.Write32(memory_info_address + 0x18, static_cast<u32>(memory_info.permission));
+    memory.Write32(memory_info_address + 0x1c, memory_info.ipc_count);
+    memory.Write32(memory_info_address + 0x20, memory_info.device_count);
+    memory.Write32(memory_info_address + 0x24, 0);
+
+    // Page info appears to be currently unused by the kernel and is always set to zero.
+    memory.Write32(page_info_address, 0);
+
+    return ResultSuccess;
+}
+
+} // namespace Kernel::Svc