svc: Implement svcUnmapMemory.

src/core/hle/kernel/process.cpp

@@ -292,6 +292,10 @@ ResultCode Process::MirrorMemory(VAddr dst_addr, VAddr src_addr, u64 size) {
     return RESULT_SUCCESS;
 }
 
+ResultCode Process::UnmapMemory(VAddr dst_addr, VAddr /*src_addr*/, u64 size) {
+    return vm_manager.UnmapRange(dst_addr, size);
+}
+
 Kernel::Process::Process() {}
 Kernel::Process::~Process() {}
 

src/core/hle/kernel/process.h

@@ -179,6 +179,9 @@ public:
 
     ResultCode MirrorMemory(VAddr dst_addr, VAddr src_addr, u64 size);
 
+    ResultCode UnmapMemory(VAddr dst_addr, VAddr src_addr, u64 size);
+
+
 private:
     Process();
     ~Process() override;

src/core/hle/svc.cpp

@@ -41,6 +41,13 @@ static ResultCode MapMemory(VAddr dst_addr, VAddr src_addr, u64 size) {
     return Kernel::g_current_process->MirrorMemory(dst_addr, src_addr, size);
 }
 
+/// Unmaps a region that was previously mapped with svcMapMemory
+static ResultCode UnmapMemory(VAddr dst_addr, VAddr src_addr, u64 size) {
+    LOG_TRACE(Kernel_SVC, "called, dst_addr=0x%llx, src_addr=0x%llx, size=0x%llx", dst_addr,
+        src_addr, size);
+    return Kernel::g_current_process->UnmapMemory(dst_addr, src_addr, size);
+}
+
 /// Connect to an OS service given the port name, returns the handle to the port to out
 static ResultCode ConnectToPort(Kernel::Handle* out_handle, VAddr port_name_address) {
     if (!Memory::IsValidVirtualAddress(port_name_address))
@@ -241,7 +248,7 @@ static const FunctionDef SVC_Table[] = {
     {0x02, nullptr, "svcSetMemoryPermission"},
     {0x03, nullptr, "svcSetMemoryAttribute"},
     {0x04, HLE::Wrap<MapMemory>, "svcMapMemory"},
-    {0x05, nullptr, "svcUnmapMemory"},
+    {0x05, HLE::Wrap<UnmapMemory>, "svcUnmapMemory"},
     {0x06, HLE::Wrap<QueryMemory>, "svcQueryMemory"},
     {0x07, nullptr, "svcExitProcess"},
     {0x08, nullptr, "svcCreateThread"},