mirror of
https://github.com/Atmosphere-NX/Atmosphere.git
synced 2025-11-03 20:41:17 +01:00
442 lines
22 KiB
C++
442 lines
22 KiB
C++
/*
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* Copyright (c) Atmosphère-NX
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms and conditions of the GNU General Public License,
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* version 2, as published by the Free Software Foundation.
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*
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* This program is distributed in the hope it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <mesosphere.hpp>
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namespace ams::kern::svc {
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/* ============================= Common ============================= */
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namespace {
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Result GetInitialProcessIdRange(u64 *out, ams::svc::InitialProcessIdRangeInfo info) {
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switch (info) {
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case ams::svc::InitialProcessIdRangeInfo_Minimum:
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MESOSPHERE_ABORT_UNLESS(GetInitialProcessIdMin() <= GetInitialProcessIdMax());
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*out = GetInitialProcessIdMin();
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break;
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case ams::svc::InitialProcessIdRangeInfo_Maximum:
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MESOSPHERE_ABORT_UNLESS(GetInitialProcessIdMin() <= GetInitialProcessIdMax());
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*out = GetInitialProcessIdMax();
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break;
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default:
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R_THROW(svc::ResultInvalidCombination());
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}
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R_SUCCEED();
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}
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Result GetInfoImpl(u64 *out, ams::svc::InfoType info_type, KProcess *process) {
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switch (info_type) {
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case ams::svc::InfoType_CoreMask:
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*out = process->GetCoreMask();
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break;
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case ams::svc::InfoType_PriorityMask:
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*out = process->GetPriorityMask();
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break;
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case ams::svc::InfoType_AliasRegionAddress:
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*out = GetInteger(process->GetPageTable().GetAliasRegionStart());
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break;
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case ams::svc::InfoType_AliasRegionSize:
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*out = process->GetPageTable().GetAliasRegionSize();
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break;
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case ams::svc::InfoType_HeapRegionAddress:
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*out = GetInteger(process->GetPageTable().GetHeapRegionStart());
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break;
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case ams::svc::InfoType_HeapRegionSize:
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*out = process->GetPageTable().GetHeapRegionSize();
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break;
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case ams::svc::InfoType_TotalMemorySize:
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*out = process->GetTotalUserPhysicalMemorySize();
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break;
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case ams::svc::InfoType_UsedMemorySize:
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*out = process->GetUsedUserPhysicalMemorySize();
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break;
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case ams::svc::InfoType_AslrRegionAddress:
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*out = GetInteger(process->GetPageTable().GetAliasCodeRegionStart());
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break;
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case ams::svc::InfoType_AslrRegionSize:
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*out = process->GetPageTable().GetAliasCodeRegionSize();
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break;
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case ams::svc::InfoType_StackRegionAddress:
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*out = GetInteger(process->GetPageTable().GetStackRegionStart());
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break;
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case ams::svc::InfoType_StackRegionSize:
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*out = process->GetPageTable().GetStackRegionSize();
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break;
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case ams::svc::InfoType_SystemResourceSizeTotal:
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*out = process->GetTotalSystemResourceSize();
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break;
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case ams::svc::InfoType_SystemResourceSizeUsed:
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*out = process->GetUsedSystemResourceSize();
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break;
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case ams::svc::InfoType_ProgramId:
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*out = process->GetProgramId();
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break;
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case ams::svc::InfoType_UserExceptionContextAddress:
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*out = GetInteger(process->GetProcessLocalRegionAddress());
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break;
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case ams::svc::InfoType_TotalNonSystemMemorySize:
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*out = process->GetTotalNonSystemUserPhysicalMemorySize();
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break;
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case ams::svc::InfoType_UsedNonSystemMemorySize:
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*out = process->GetUsedNonSystemUserPhysicalMemorySize();
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break;
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case ams::svc::InfoType_IsApplication:
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*out = process->IsApplication();
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break;
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case ams::svc::InfoType_FreeThreadCount:
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if (KResourceLimit *resource_limit = process->GetResourceLimit(); resource_limit != nullptr) {
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const auto current_value = resource_limit->GetCurrentValue(ams::svc::LimitableResource_ThreadCountMax);
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const auto limit_value = resource_limit->GetLimitValue(ams::svc::LimitableResource_ThreadCountMax);
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*out = limit_value - current_value;
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} else {
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*out = 0;
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}
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break;
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MESOSPHERE_UNREACHABLE_DEFAULT_CASE();
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}
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R_SUCCEED();
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}
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Result GetInfo(u64 *out, ams::svc::InfoType info_type, ams::svc::Handle handle, u64 info_subtype) {
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switch (info_type) {
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case ams::svc::InfoType_CoreMask:
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case ams::svc::InfoType_PriorityMask:
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case ams::svc::InfoType_AliasRegionAddress:
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case ams::svc::InfoType_AliasRegionSize:
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case ams::svc::InfoType_HeapRegionAddress:
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case ams::svc::InfoType_HeapRegionSize:
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case ams::svc::InfoType_TotalMemorySize:
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case ams::svc::InfoType_UsedMemorySize:
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case ams::svc::InfoType_AslrRegionAddress:
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case ams::svc::InfoType_AslrRegionSize:
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case ams::svc::InfoType_StackRegionAddress:
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case ams::svc::InfoType_StackRegionSize:
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case ams::svc::InfoType_SystemResourceSizeTotal:
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case ams::svc::InfoType_SystemResourceSizeUsed:
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case ams::svc::InfoType_ProgramId:
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case ams::svc::InfoType_UserExceptionContextAddress:
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case ams::svc::InfoType_TotalNonSystemMemorySize:
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case ams::svc::InfoType_UsedNonSystemMemorySize:
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case ams::svc::InfoType_IsApplication:
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case ams::svc::InfoType_FreeThreadCount:
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{
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/* These info types don't support non-zero subtypes. */
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R_UNLESS(info_subtype == 0, svc::ResultInvalidCombination());
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/* Get the process from its handle. */
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KScopedAutoObject process = GetCurrentProcess().GetHandleTable().GetObject<KProcess>(handle);
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#if defined(MESOSPHERE_ENABLE_GET_INFO_OF_DEBUG_PROCESS)
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/* If we the process is valid, use it. */
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if (process.IsNotNull()) {
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R_RETURN(GetInfoImpl(out, info_type, process.GetPointerUnsafe()));
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}
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/* Otherwise, as a mesosphere extension check if we were passed a usable KDebug. */
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KScopedAutoObject debug = GetCurrentProcess().GetHandleTable().GetObject<KDebug>(handle);
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R_UNLESS(debug.IsNotNull(), svc::ResultInvalidHandle());
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/* Get the process from the debug object. */
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/* TODO: ResultInvalidHandle()? */
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R_UNLESS(debug->IsAttached(), svc::ResultProcessTerminated());
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R_UNLESS(debug->OpenProcess(), svc::ResultProcessTerminated());
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/* Close the process when we're done. */
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ON_SCOPE_EXIT { debug->CloseProcess(); };
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/* Return the info. */
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R_RETURN(GetInfoImpl(out, info_type, debug->GetProcessUnsafe()));
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#else
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/* Verify that the process is valid. */
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R_UNLESS(process.IsNotNull(), svc::ResultInvalidHandle());
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/* Return the relevant info. */
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R_RETURN(GetInfoImpl(out, info_type, process.GetPointerUnsafe()));
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#endif
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}
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break;
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case ams::svc::InfoType_DebuggerAttached:
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{
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/* Verify the input handle is invalid. */
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R_UNLESS(handle == ams::svc::InvalidHandle, svc::ResultInvalidHandle());
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/* Verify the sub-type is valid. */
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R_UNLESS(info_subtype == 0, svc::ResultInvalidCombination());
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/* Get whether debugger is attached. */
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*out = GetCurrentProcess().GetDebugObject() != nullptr;
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}
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break;
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case ams::svc::InfoType_ResourceLimit:
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{
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/* Verify the input handle is invalid. */
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R_UNLESS(handle == ams::svc::InvalidHandle, svc::ResultInvalidHandle());
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/* Verify the sub-type is valid. */
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R_UNLESS(info_subtype == 0, svc::ResultInvalidCombination());
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/* Get the handle table and resource limit. */
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KHandleTable &handle_table = GetCurrentProcess().GetHandleTable();
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KResourceLimit *resource_limit = GetCurrentProcess().GetResourceLimit();
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if (resource_limit != nullptr) {
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/* Get a new handle for the resource limit. */
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ams::svc::Handle tmp;
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R_TRY(handle_table.Add(std::addressof(tmp), resource_limit));
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/* Set the output. */
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*out = tmp;
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} else {
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/* Set the output. */
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*out = ams::svc::InvalidHandle;
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}
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}
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break;
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case ams::svc::InfoType_IdleTickCount:
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{
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/* Verify the input handle is invalid. */
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R_UNLESS(handle == ams::svc::InvalidHandle, svc::ResultInvalidHandle());
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/* Disable dispatch while we get the tick count. */
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KScopedDisableDispatch dd;
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/* Verify the requested core is valid. */
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const bool core_valid = (info_subtype == static_cast<u64>(-1ul)) || (info_subtype == static_cast<u64>(GetCurrentCoreId()));
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R_UNLESS(core_valid, svc::ResultInvalidCombination());
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/* Get the idle tick count. */
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*out = Kernel::GetScheduler().GetIdleThread()->GetCpuTime() - Kernel::GetInterruptTaskManager().GetCpuTime();
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}
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break;
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case ams::svc::InfoType_RandomEntropy:
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{
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/* Verify the input handle is invalid. */
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R_UNLESS(handle == ams::svc::InvalidHandle, svc::ResultInvalidHandle());
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/* Verify the requested entropy is valid. */
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R_UNLESS(info_subtype < 4, svc::ResultInvalidCombination());
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/* Get the entropy. */
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*out = GetCurrentProcess().GetRandomEntropy(info_subtype);
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}
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break;
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case ams::svc::InfoType_InitialProcessIdRange:
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{
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/* NOTE: This info type was added in 4.0.0, and removed in 5.0.0. */
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R_UNLESS(GetTargetFirmware() < TargetFirmware_5_0_0, svc::ResultInvalidEnumValue());
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/* Verify the input handle is invalid. */
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R_UNLESS(handle == ams::svc::InvalidHandle, svc::ResultInvalidHandle());
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/* Get the process id range. */
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R_TRY(GetInitialProcessIdRange(out, static_cast<ams::svc::InitialProcessIdRangeInfo>(info_subtype)));
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}
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break;
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case ams::svc::InfoType_ThreadTickCount:
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{
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/* Verify the requested core is valid. */
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const bool core_valid = (info_subtype == static_cast<u64>(-1ul)) || (info_subtype < cpu::NumVirtualCores);
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R_UNLESS(core_valid, svc::ResultInvalidCombination());
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/* Get the thread from its handle. */
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KScopedAutoObject thread = GetCurrentProcess().GetHandleTable().GetObject<KThread>(handle);
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R_UNLESS(thread.IsNotNull(), svc::ResultInvalidHandle());
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/* Disable dispatch while we get the tick count. */
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KScopedDisableDispatch dd;
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/* Determine the tick count. */
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s64 tick_count;
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if (info_subtype == static_cast<u64>(-1ul)) {
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tick_count = thread->GetCpuTime();
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if (GetCurrentThreadPointer() == thread.GetPointerUnsafe()) {
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const s64 cur_tick = KHardwareTimer::GetTick();
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const s64 prev_switch = Kernel::GetScheduler().GetLastContextSwitchTime();
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tick_count += (cur_tick - prev_switch);
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}
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} else {
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const s32 phys_core = cpu::VirtualToPhysicalCoreMap[info_subtype];
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MESOSPHERE_ABORT_UNLESS(phys_core < static_cast<s32>(cpu::NumCores));
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tick_count = thread->GetCpuTime(phys_core);
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if (GetCurrentThreadPointer() == thread.GetPointerUnsafe() && phys_core == GetCurrentCoreId()) {
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const s64 cur_tick = KHardwareTimer::GetTick();
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const s64 prev_switch = Kernel::GetScheduler().GetLastContextSwitchTime();
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tick_count += (cur_tick - prev_switch);
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}
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}
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/* Set the output. */
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*out = tick_count;
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}
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break;
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case ams::svc::InfoType_IsSvcPermitted:
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{
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/* Verify the input handle is invalid. */
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R_UNLESS(handle == ams::svc::InvalidHandle, svc::ResultInvalidHandle());
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/* Verify the sub-type is valid. */
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R_UNLESS(info_subtype == svc::SvcId_SynchronizePreemptionState, svc::ResultInvalidCombination());
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/* Get whether the svc is permitted. */
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*out = GetCurrentProcess().IsPermittedSvc(static_cast<svc::SvcId>(info_subtype));
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}
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break;
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case ams::svc::InfoType_MesosphereMeta:
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{
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/* Verify the handle is invalid. */
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R_UNLESS(handle == ams::svc::InvalidHandle, svc::ResultInvalidHandle());
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switch (static_cast<ams::svc::MesosphereMetaInfo>(info_subtype)) {
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case ams::svc::MesosphereMetaInfo_KernelVersion:
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{
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/* Return the supported kernel version. */
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*out = ams::svc::SupportedKernelVersion;
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}
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break;
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case ams::svc::MesosphereMetaInfo_IsKTraceEnabled:
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{
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/* Return whether the kernel supports tracing. */
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constexpr u64 KTraceValue = ams::kern::IsKTraceEnabled ? 1 : 0;
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*out = KTraceValue;
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}
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break;
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case ams::svc::MesosphereMetaInfo_IsSingleStepEnabled:
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{
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/* Return whether the kernel supports hardware single step. */
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#if defined(MESOSPHERE_ENABLE_HARDWARE_SINGLE_STEP)
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*out = 1;
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#else
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*out = 0;
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#endif
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}
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break;
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default:
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R_THROW(svc::ResultInvalidCombination());
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}
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}
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break;
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case ams::svc::InfoType_MesosphereCurrentProcess:
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{
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/* Verify the input handle is invalid. */
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R_UNLESS(handle == ams::svc::InvalidHandle, svc::ResultInvalidHandle());
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/* Verify the sub-type is valid. */
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R_UNLESS(info_subtype == 0, svc::ResultInvalidCombination());
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/* Get the handle table. */
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KHandleTable &handle_table = GetCurrentProcess().GetHandleTable();
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/* Get a new handle for the current process. */
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ams::svc::Handle tmp;
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R_TRY(handle_table.Add(std::addressof(tmp), GetCurrentProcessPointer()));
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/* Set the output. */
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*out = tmp;
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}
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break;
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default:
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{
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/* For debug, log the invalid info call. */
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MESOSPHERE_LOG("GetInfo(%p, %u, %08x, %lu) was called\n", out, static_cast<u32>(info_type), static_cast<u32>(handle), info_subtype);
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}
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R_THROW(svc::ResultInvalidEnumValue());
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}
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R_SUCCEED();
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}
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constexpr bool IsValidMemoryPool(u64 pool) {
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switch (static_cast<KMemoryManager::Pool>(pool)) {
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case KMemoryManager::Pool_Application:
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case KMemoryManager::Pool_Applet:
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case KMemoryManager::Pool_System:
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case KMemoryManager::Pool_SystemNonSecure:
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return true;
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default:
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return false;
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}
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}
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Result GetSystemInfo(u64 *out, ams::svc::SystemInfoType info_type, ams::svc::Handle handle, u64 info_subtype) {
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switch (info_type) {
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case ams::svc::SystemInfoType_TotalPhysicalMemorySize:
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case ams::svc::SystemInfoType_UsedPhysicalMemorySize:
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{
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/* Verify the input handle is invalid. */
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R_UNLESS(handle == ams::svc::InvalidHandle, svc::ResultInvalidHandle());
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/* Verify the sub-type is valid. */
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R_UNLESS(IsValidMemoryPool(info_subtype), svc::ResultInvalidCombination());
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/* Convert to pool. */
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const auto pool = static_cast<KMemoryManager::Pool>(info_subtype);
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/* Get the memory size. */
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auto &mm = Kernel::GetMemoryManager();
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switch (info_type) {
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case ams::svc::SystemInfoType_TotalPhysicalMemorySize:
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*out = mm.GetSize(pool);
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break;
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case ams::svc::SystemInfoType_UsedPhysicalMemorySize:
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*out = mm.GetSize(pool) - mm.GetFreeSize(pool);
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break;
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MESOSPHERE_UNREACHABLE_DEFAULT_CASE();
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}
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}
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break;
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case ams::svc::SystemInfoType_InitialProcessIdRange:
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{
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/* Verify the handle is invalid. */
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R_UNLESS(handle == ams::svc::InvalidHandle, svc::ResultInvalidHandle());
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/* Get the process id range. */
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R_TRY(GetInitialProcessIdRange(out, static_cast<ams::svc::InitialProcessIdRangeInfo>(info_subtype)));
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}
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break;
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default:
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R_THROW(svc::ResultInvalidEnumValue());
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}
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R_SUCCEED();
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}
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}
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/* ============================= 64 ABI ============================= */
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Result GetInfo64(uint64_t *out, ams::svc::InfoType info_type, ams::svc::Handle handle, uint64_t info_subtype) {
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R_RETURN(GetInfo(out, info_type, handle, info_subtype));
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}
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Result GetSystemInfo64(uint64_t *out, ams::svc::SystemInfoType info_type, ams::svc::Handle handle, uint64_t info_subtype) {
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R_RETURN(GetSystemInfo(out, info_type, handle, info_subtype));
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}
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/* ============================= 64From32 ABI ============================= */
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Result GetInfo64From32(uint64_t *out, ams::svc::InfoType info_type, ams::svc::Handle handle, uint64_t info_subtype) {
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R_RETURN(GetInfo(out, info_type, handle, info_subtype));
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}
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Result GetSystemInfo64From32(uint64_t *out, ams::svc::SystemInfoType info_type, ams::svc::Handle handle, uint64_t info_subtype) {
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R_RETURN(GetSystemInfo(out, info_type, handle, info_subtype));
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}
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}
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