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IPC bug fixes
This fixes two bugs in IPC that were discovered when running Puyo Puyo Tetris. The CloneCurrentObject control IPC will now correctly return the handle of the newly created object through move handles, rather than pushing it as a result. The size array of u16s with the sizes of each C buffer is now taken into account when reading them. Before this change C buffers were entirely broken.
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@ -22,6 +22,8 @@ namespace skyline::kernel::ipc {
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header = reinterpret_cast<CommandHeader *>(pointer);
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pointer += sizeof(CommandHeader);
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size_t cBufferLengthSize = util::AlignUp(((header->cFlag == BufferCFlag::None) ? 0 : ((header->cFlag > BufferCFlag::SingleDescriptor) ? (static_cast<u8>(header->cFlag) - 2) : 1)) * sizeof(u16), sizeof(u32));
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if (header->handleDesc) {
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handleDesc = reinterpret_cast<HandleDescriptor *>(pointer);
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pointer += sizeof(HandleDescriptor) + (handleDesc->sendPid ? sizeof(u64) : 0);
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@ -85,7 +87,7 @@ namespace skyline::kernel::ipc {
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cmdArg = pointer;
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cmdArgSz = domain->payloadSz - sizeof(PayloadHeader);
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pointer += domain->payloadSz;
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pointer += cmdArgSz;
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for (u8 index = 0; domain->inputCount > index; index++) {
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domainObjects.push_back(*reinterpret_cast<KHandle *>(pointer));
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@ -96,7 +98,7 @@ namespace skyline::kernel::ipc {
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pointer += sizeof(PayloadHeader);
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cmdArg = pointer;
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cmdArgSz = (header->rawSize * sizeof(u32)) - (constant::IpcPaddingSum + sizeof(PayloadHeader));
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cmdArgSz = (header->rawSize * sizeof(u32)) - (constant::IpcPaddingSum + sizeof(PayloadHeader)) - cBufferLengthSize;
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pointer += cmdArgSz;
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}
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@ -105,7 +107,7 @@ namespace skyline::kernel::ipc {
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if (payload->magic != util::MakeMagic<u32>("SFCI") && (header->type != CommandType::Control && header->type != CommandType::ControlWithContext)) // SFCI is the magic in received IPC messages
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state.logger->Debug("Unexpected Magic in PayloadHeader: 0x{:X}", u32(payload->magic));
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pointer += constant::IpcPaddingSum - padding;
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pointer += constant::IpcPaddingSum - padding + cBufferLengthSize;
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if (header->cFlag == BufferCFlag::SingleDescriptor) {
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auto bufC = reinterpret_cast<BufferDescriptorC *>(pointer);
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@ -189,7 +189,7 @@ namespace skyline::service {
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break;
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case ipc::ControlCommand::CloneCurrentObject:
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case ipc::ControlCommand::CloneCurrentObjectEx:
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response.Push(state.process->InsertItem(session));
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response.moveHandles.push_back(state.process->InsertItem(session));
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break;
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case ipc::ControlCommand::QueryPointerBufferSize:
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response.Push<u32>(0x1000);
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