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Diffstat (limited to '')
-rw-r--r-- | src/core/hle/kernel/svc/svc_ipc.cpp | 173 |
1 files changed, 173 insertions, 0 deletions
diff --git a/src/core/hle/kernel/svc/svc_ipc.cpp b/src/core/hle/kernel/svc/svc_ipc.cpp new file mode 100644 index 000000000..60247df2e --- /dev/null +++ b/src/core/hle/kernel/svc/svc_ipc.cpp @@ -0,0 +1,173 @@ +// SPDX-FileCopyrightText: Copyright 2023 yuzu Emulator Project +// SPDX-License-Identifier: GPL-2.0-or-later + +#include "common/scope_exit.h" +#include "common/scratch_buffer.h" +#include "core/core.h" +#include "core/hle/kernel/k_client_session.h" +#include "core/hle/kernel/k_process.h" +#include "core/hle/kernel/k_server_session.h" +#include "core/hle/kernel/svc.h" + +namespace Kernel::Svc { + +/// Makes a blocking IPC call to a service. +Result SendSyncRequest(Core::System& system, Handle handle) { + // Get the client session from its handle. + KScopedAutoObject session = + GetCurrentProcess(system.Kernel()).GetHandleTable().GetObject<KClientSession>(handle); + R_UNLESS(session.IsNotNull(), ResultInvalidHandle); + + LOG_TRACE(Kernel_SVC, "called handle=0x{:08X}", handle); + + R_RETURN(session->SendSyncRequest()); +} + +Result SendSyncRequestWithUserBuffer(Core::System& system, uint64_t message_buffer, + uint64_t message_buffer_size, Handle session_handle) { + UNIMPLEMENTED(); + R_THROW(ResultNotImplemented); +} + +Result SendAsyncRequestWithUserBuffer(Core::System& system, Handle* out_event_handle, + uint64_t message_buffer, uint64_t message_buffer_size, + Handle session_handle) { + UNIMPLEMENTED(); + R_THROW(ResultNotImplemented); +} + +Result ReplyAndReceive(Core::System& system, s32* out_index, uint64_t handles_addr, s32 num_handles, + Handle reply_target, s64 timeout_ns) { + auto& kernel = system.Kernel(); + auto& handle_table = GetCurrentProcess(kernel).GetHandleTable(); + + R_UNLESS(0 <= num_handles && num_handles <= ArgumentHandleCountMax, ResultOutOfRange); + R_UNLESS(GetCurrentMemory(kernel).IsValidVirtualAddressRange( + handles_addr, static_cast<u64>(sizeof(Handle) * num_handles)), + ResultInvalidPointer); + + std::array<Handle, Svc::ArgumentHandleCountMax> handles; + GetCurrentMemory(kernel).ReadBlock(handles_addr, handles.data(), sizeof(Handle) * num_handles); + + // Convert handle list to object table. + std::array<KSynchronizationObject*, Svc::ArgumentHandleCountMax> objs; + R_UNLESS(handle_table.GetMultipleObjects<KSynchronizationObject>(objs.data(), handles.data(), + num_handles), + ResultInvalidHandle); + + // Ensure handles are closed when we're done. + SCOPE_EXIT({ + for (auto i = 0; i < num_handles; ++i) { + objs[i]->Close(); + } + }); + + // Reply to the target, if one is specified. + if (reply_target != InvalidHandle) { + KScopedAutoObject session = handle_table.GetObject<KServerSession>(reply_target); + R_UNLESS(session.IsNotNull(), ResultInvalidHandle); + + // If we fail to reply, we want to set the output index to -1. + ON_RESULT_FAILURE { + *out_index = -1; + }; + + // Send the reply. + R_TRY(session->SendReply()); + } + + // Wait for a message. + while (true) { + // Wait for an object. + s32 index; + Result result = KSynchronizationObject::Wait(kernel, std::addressof(index), objs.data(), + num_handles, timeout_ns); + if (result == ResultTimedOut) { + R_RETURN(result); + } + + // Receive the request. + if (R_SUCCEEDED(result)) { + KServerSession* session = objs[index]->DynamicCast<KServerSession*>(); + if (session != nullptr) { + result = session->ReceiveRequest(); + if (result == ResultNotFound) { + continue; + } + } + } + + *out_index = index; + R_RETURN(result); + } +} + +Result ReplyAndReceiveWithUserBuffer(Core::System& system, int32_t* out_index, + uint64_t message_buffer, uint64_t message_buffer_size, + uint64_t handles, int32_t num_handles, Handle reply_target, + int64_t timeout_ns) { + UNIMPLEMENTED(); + R_THROW(ResultNotImplemented); +} + +Result SendSyncRequest64(Core::System& system, Handle session_handle) { + R_RETURN(SendSyncRequest(system, session_handle)); +} + +Result SendSyncRequestWithUserBuffer64(Core::System& system, uint64_t message_buffer, + uint64_t message_buffer_size, Handle session_handle) { + R_RETURN( + SendSyncRequestWithUserBuffer(system, message_buffer, message_buffer_size, session_handle)); +} + +Result SendAsyncRequestWithUserBuffer64(Core::System& system, Handle* out_event_handle, + uint64_t message_buffer, uint64_t message_buffer_size, + Handle session_handle) { + R_RETURN(SendAsyncRequestWithUserBuffer(system, out_event_handle, message_buffer, + message_buffer_size, session_handle)); +} + +Result ReplyAndReceive64(Core::System& system, int32_t* out_index, uint64_t handles, + int32_t num_handles, Handle reply_target, int64_t timeout_ns) { + R_RETURN(ReplyAndReceive(system, out_index, handles, num_handles, reply_target, timeout_ns)); +} + +Result ReplyAndReceiveWithUserBuffer64(Core::System& system, int32_t* out_index, + uint64_t message_buffer, uint64_t message_buffer_size, + uint64_t handles, int32_t num_handles, Handle reply_target, + int64_t timeout_ns) { + R_RETURN(ReplyAndReceiveWithUserBuffer(system, out_index, message_buffer, message_buffer_size, + handles, num_handles, reply_target, timeout_ns)); +} + +Result SendSyncRequest64From32(Core::System& system, Handle session_handle) { + R_RETURN(SendSyncRequest(system, session_handle)); +} + +Result SendSyncRequestWithUserBuffer64From32(Core::System& system, uint32_t message_buffer, + uint32_t message_buffer_size, Handle session_handle) { + R_RETURN( + SendSyncRequestWithUserBuffer(system, message_buffer, message_buffer_size, session_handle)); +} + +Result SendAsyncRequestWithUserBuffer64From32(Core::System& system, Handle* out_event_handle, + uint32_t message_buffer, uint32_t message_buffer_size, + Handle session_handle) { + R_RETURN(SendAsyncRequestWithUserBuffer(system, out_event_handle, message_buffer, + message_buffer_size, session_handle)); +} + +Result ReplyAndReceive64From32(Core::System& system, int32_t* out_index, uint32_t handles, + int32_t num_handles, Handle reply_target, int64_t timeout_ns) { + R_RETURN(ReplyAndReceive(system, out_index, handles, num_handles, reply_target, timeout_ns)); +} + +Result ReplyAndReceiveWithUserBuffer64From32(Core::System& system, int32_t* out_index, + uint32_t message_buffer, uint32_t message_buffer_size, + uint32_t handles, int32_t num_handles, + Handle reply_target, int64_t timeout_ns) { + R_RETURN(ReplyAndReceiveWithUserBuffer(system, out_index, message_buffer, message_buffer_size, + handles, num_handles, reply_target, timeout_ns)); +} + +} // namespace Kernel::Svc |