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// SPDX-FileCopyrightText: Copyright 2023 yuzu Emulator Project
// SPDX-License-Identifier: GPL-2.0-or-later
#include "common/scope_exit.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::vector<Handle> handles(num_handles);
GetCurrentMemory(kernel).ReadBlock(handles_addr, handles.data(), sizeof(Handle) * num_handles);
// Convert handle list to object table.
std::vector<KSynchronizationObject*> objs(num_handles);
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(),
static_cast<s32>(objs.size()), 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
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