nn_fp: Multiple fixes

Author: Exzap

src/Cafe/IOSU/legacy/iosu_fpd.cpp

@@ -328,6 +328,7 @@ namespace iosu
 		static const auto FPResult_Ok = 0;
 		static const auto FPResult_InvalidIPCParam = BUILD_NN_RESULT(NN_RESULT_LEVEL_LVL6, NN_RESULT_MODULE_NN_FP, 0x680);
 		static const auto FPResult_RequestFailed = BUILD_NN_RESULT(NN_RESULT_LEVEL_FATAL, NN_RESULT_MODULE_NN_FP, 0); // figure out proper error code
+		static const auto FPResult_Aborted = BUILD_NN_RESULT(NN_RESULT_LEVEL_STATUS, NN_RESULT_MODULE_NN_FP, 0x3480);
 
 		class FPDService : public iosu::nn::IPCSimpleService
 		{
@@ -586,7 +587,7 @@ namespace iosu
 				if (!ActiveSettings::IsOnlineEnabled())
 				{
 					// not online, fail immediately
-					return BUILD_NN_RESULT(NN_RESULT_LEVEL_FATAL, NN_RESULT_MODULE_NN_FP, 0); // todo
+					return FPResult_Ok; // Splatoon expects this to always return success otherwise it will softlock. This should be FPResult_Aborted?
 				}
 				StartFriendSession();
 				fpdClient->hasLoggedIn = true;

src/Cafe/OS/libs/nn_fp/nn_fp.cpp

@@ -55,8 +55,8 @@ namespace nn
 			{
 				std::unique_lock _l(m_mtx);
 				void* p = g_fp.fpBufferHeap->alloc(size, 32);
-				uint32 heapSize, allocationSize, allocNum;
-				g_fp.fpBufferHeap->getStats(heapSize, allocationSize, allocNum);
+				if (!p)
+					cemuLog_log(LogType::Force, "nn_fp: Internal heap is full");
 				return p;
 			}
 
@@ -153,8 +153,11 @@ namespace nn
 					totalBufferSize += m_vec[i].size;
 					totalBufferSize = (totalBufferSize+31)&~31;
 				}
-				m_dataBuffer = FPIpcBufferAllocator.Allocate(totalBufferSize, 32);
-				cemu_assert_debug(m_dataBuffer);
+				if(totalBufferSize > 0)
+				{
+					m_dataBuffer = FPIpcBufferAllocator.Allocate(totalBufferSize, 32);
+					cemu_assert_debug(m_dataBuffer);
+				}
 				// update Ioctl vector addresses
 				for(uint8 i=0; i<m_numVecIn + m_numVecOut; i++)
 				{
@@ -176,9 +179,7 @@ namespace nn
 				ppcDefineParamPtr(ipcCtx, FPIpcContext, 1);
 				ipcCtx->m_asyncResult = result; // store result in variable since FP callbacks pass a pointer to nnResult and not the value directly
 				ipcCtx->CopyBackOutputs();
-				cemuLog_logDebug(LogType::Force, "[DBG] AsyncHandler BeforeCallback");
 				PPCCoreCallback(ipcCtx->m_callbackFunc, &ipcCtx->m_asyncResult, ipcCtx->m_callbackParam);
-				cemuLog_logDebug(LogType::Force, "[DBG] AsyncHandler AfterCallback");
 				delete ipcCtx;
 				osLib_returnFromFunction(hCPU, 0);
 			}

src/util/ChunkedHeap/ChunkedHeap.h

@@ -489,6 +489,11 @@ class VHeap : public VGenericHeap
 
 	bool _alloc(uint32 size, uint32 alignment, uint32& allocOffsetOut)
 	{
+		if(size == 0)
+		{
+			size = 1; // zero-sized allocations are not supported
+			cemu_assert_suspicious();
+		}
 		// find smallest bucket to scan
 		uint32 alignmentM1 = alignment - 1;
 		uint32 bucketIndex = ulog2(size);
@@ -521,7 +526,10 @@ class VHeap : public VGenericHeap
 	{
 		auto it = map_allocatedRange.find(addrOffset);
 		if (it == map_allocatedRange.end())
-			assert_dbg();
+		{
+			cemuLog_log(LogType::Force, "VHeap internal error");
+			cemu_assert(false);
+		}
 		allocRange_t* range = it->second;
 		map_allocatedRange.erase(it);
 		m_statsMemAllocated -= range->size;