DSP: Added stubs for several commonly used DSP service functions.

src/core/hle/service/dsp_dsp.cpp

@@ -4,6 +4,7 @@
 
 #include "common/log.h"
 #include "core/hle/hle.h"
+#include "core/hle/kernel/event.h"
 #include "core/hle/service/dsp_dsp.h"
 
 ////////////////////////////////////////////////////////////////////////////////////////////////////
@@ -11,24 +12,101 @@
 
 namespace DSP_DSP {
 
+static Handle semaphore_event;
+static Handle interrupt_event;
+
+/**
+ * DSP_DSP::LoadComponent service function
+ *  Inputs:
+ *      1 : Size
+ *      2 : Unknown (observed only half word used)
+ *      3 : Unknown (observed only half word used)
+ *      4 : (size << 4) | 0xA
+ *      5 : Buffer address
+ *  Outputs:
+ *      1 : Result of function, 0 on success, otherwise error code
+ *      2 : Component loaded, 0 on not loaded, 1 on loaded
+ */
+void LoadComponent(Service::Interface* self) {
+    u32* cmd_buff = Service::GetCommandBuffer();
+
+    cmd_buff[1] = 0; // No error
+    cmd_buff[2] = 1; // Pretend that we actually loaded the DSP firmware
+
+    // TODO(bunnei): Implement real DSP firmware loading
+
+    DEBUG_LOG(KERNEL, "(STUBBED) called");
+}
+
+/**
+ * DSP_DSP::GetSemaphoreEventHandle service function
+ *  Outputs:
+ *      1 : Result of function, 0 on success, otherwise error code
+ *      3 : Semaphore event handle
+ */
+void GetSemaphoreEventHandle(Service::Interface* self) {
+    u32* cmd_buff = Service::GetCommandBuffer();
+
+    cmd_buff[1] = 0; // No error
+    cmd_buff[3] = semaphore_event; // Event handle
+
+    DEBUG_LOG(KERNEL, "(STUBBED) called");
+}
+
+/**
+ * DSP_DSP::RegisterInterruptEvents service function
+ *  Inputs:
+ *      1 : Parameter 0 (purpose unknown)
+ *      2 : Parameter 1 (purpose unknown)
+ *      4 : Interrupt event handle
+ *  Outputs:
+ *      1 : Result of function, 0 on success, otherwise error code
+ */
+void RegisterInterruptEvents(Service::Interface* self) {
+    u32* cmd_buff = Service::GetCommandBuffer();
+
+    interrupt_event = static_cast<Handle>(cmd_buff[4]);
+
+    cmd_buff[1] = 0; // No error
+
+    DEBUG_LOG(KERNEL, "(STUBBED) called");
+}
+
+/**
+ * DSP_DSP::WriteReg0x10 service function
+ *  Inputs:
+ *      1 : Unknown (observed only half word used)
+ *  Outputs:
+ *      1 : Result of function, 0 on success, otherwise error code
+ */
+void WriteReg0x10(Service::Interface* self) {
+    u32* cmd_buff = Service::GetCommandBuffer();
+
+    Kernel::SignalEvent(interrupt_event);
+
+    cmd_buff[1] = 0; // No error
+
+    DEBUG_LOG(KERNEL, "(STUBBED) called");
+}
+
 const Interface::FunctionInfo FunctionTable[] = {
     {0x00010040, nullptr,                 "RecvData"},
     {0x00020040, nullptr,                 "RecvDataIsReady"},
     {0x00030080, nullptr,                 "SendData"},
     {0x00040040, nullptr,                 "SendDataIsEmpty"},
-    {0x00070040, nullptr,               "WriteReg0x10"},
+    {0x00070040, WriteReg0x10,            "WriteReg0x10"},
     {0x00080000, nullptr,                 "GetSemaphore"},
     {0x00090040, nullptr,                 "ClearSemaphore"},
     {0x000B0000, nullptr,                 "CheckSemaphoreRequest"},
     {0x000C0040, nullptr,                 "ConvertProcessAddressFromDspDram"},
     {0x000D0082, nullptr,                 "WriteProcessPipe"},
     {0x001000C0, nullptr,                 "ReadPipeIfPossible"},
-    {0x001100C2, nullptr,               "LoadComponent"},
+    {0x001100C2, LoadComponent,           "LoadComponent"},
     {0x00120000, nullptr,                 "UnloadComponent"},
     {0x00130082, nullptr,                 "FlushDataCache"},
     {0x00140082, nullptr,                 "InvalidateDCache"},
-    {0x00150082, nullptr,               "RegisterInterruptEvents"},
+    {0x00150082, RegisterInterruptEvents, "RegisterInterruptEvents"},
-    {0x00160000, nullptr,               "GetSemaphoreEventHandle"},
+    {0x00160000, GetSemaphoreEventHandle, "GetSemaphoreEventHandle"},
     {0x00170040, nullptr,                 "SetSemaphoreMask"},
     {0x00180040, nullptr,                 "GetPhysicalAddress"},
     {0x00190040, nullptr,                 "GetVirtualAddress"},
@@ -43,6 +121,9 @@ const Interface::FunctionInfo FunctionTable[] = {
 // Interface class
 
 Interface::Interface() {
+    semaphore_event = Kernel::CreateEvent(RESETTYPE_ONESHOT, "DSP_DSP::semaphore_event");
+    interrupt_event = 0;
+
     Register(FunctionTable, ARRAY_SIZE(FunctionTable));
 }