// SPDX-FileCopyrightText: Copyright 2023 yuzu Emulator Project
// SPDX-License-Identifier: GPL-2.0-or-later
#include "core/core.h"
#include "core/core_timing.h"
#include "core/hle/kernel/k_process.h"
#include "core/hle/kernel/k_resource_limit.h"
#include "core/hle/kernel/svc.h"
namespace Kernel::Svc {
/// Gets system/memory information for the current process
Result GetInfo(Core::System& system, u64* result, InfoType info_id_type, Handle handle,
u64 info_sub_id) {
LOG_TRACE(Kernel_SVC, "called info_id=0x{:X}, info_sub_id=0x{:X}, handle=0x{:08X}",
info_id_type, info_sub_id, handle);
u32 info_id = static_cast<u32>(info_id_type);
switch (info_id_type) {
case InfoType::CoreMask:
case InfoType::PriorityMask:
case InfoType::AliasRegionAddress:
case InfoType::AliasRegionSize:
case InfoType::HeapRegionAddress:
case InfoType::HeapRegionSize:
case InfoType::AslrRegionAddress:
case InfoType::AslrRegionSize:
case InfoType::StackRegionAddress:
case InfoType::StackRegionSize:
case InfoType::TotalMemorySize:
case InfoType::UsedMemorySize:
case InfoType::SystemResourceSizeTotal:
case InfoType::SystemResourceSizeUsed:
case InfoType::ProgramId:
case InfoType::UserExceptionContextAddress:
case InfoType::TotalNonSystemMemorySize:
case InfoType::UsedNonSystemMemorySize:
case InfoType::IsApplication:
case InfoType::FreeThreadCount: {
if (info_sub_id != 0) {
LOG_ERROR(Kernel_SVC, "Info sub id is non zero! info_id={}, info_sub_id={}", info_id,
info_sub_id);
return ResultInvalidEnumValue;
}
const auto& handle_table = GetCurrentProcess(system.Kernel()).GetHandleTable();
KScopedAutoObject process = handle_table.GetObject<KProcess>(handle);
if (process.IsNull()) {
LOG_ERROR(Kernel_SVC, "Process is not valid! info_id={}, info_sub_id={}, handle={:08X}",
info_id, info_sub_id, handle);
return ResultInvalidHandle;
}
switch (info_id_type) {
case InfoType::CoreMask:
*result = process->GetCoreMask();
return ResultSuccess;
case InfoType::PriorityMask:
*result = process->GetPriorityMask();
return ResultSuccess;
case InfoType::AliasRegionAddress:
*result = process->PageTable().GetAliasRegionStart();
return ResultSuccess;
case InfoType::AliasRegionSize:
*result = process->PageTable().GetAliasRegionSize();
return ResultSuccess;
case InfoType::HeapRegionAddress:
*result = process->PageTable().GetHeapRegionStart();
return ResultSuccess;
case InfoType::HeapRegionSize:
*result = process->PageTable().GetHeapRegionSize();
return ResultSuccess;
case InfoType::AslrRegionAddress:
*result = process->PageTable().GetAliasCodeRegionStart();
return ResultSuccess;
case InfoType::AslrRegionSize:
*result = process->PageTable().GetAliasCodeRegionSize();
return ResultSuccess;
case InfoType::StackRegionAddress:
*result = process->PageTable().GetStackRegionStart();
return ResultSuccess;
case InfoType::StackRegionSize:
*result = process->PageTable().GetStackRegionSize();
return ResultSuccess;
case InfoType::TotalMemorySize:
*result = process->GetTotalPhysicalMemoryAvailable();
return ResultSuccess;
case InfoType::UsedMemorySize:
*result = process->GetTotalPhysicalMemoryUsed();
return ResultSuccess;
case InfoType::SystemResourceSizeTotal:
*result = process->GetSystemResourceSize();
return ResultSuccess;
case InfoType::SystemResourceSizeUsed:
LOG_WARNING(Kernel_SVC, "(STUBBED) Attempted to query system resource usage");
*result = process->GetSystemResourceUsage();
return ResultSuccess;
case InfoType::ProgramId:
*result = process->GetProgramID();
return ResultSuccess;
case InfoType::UserExceptionContextAddress:
*result = process->GetProcessLocalRegionAddress();
return ResultSuccess;
case InfoType::TotalNonSystemMemorySize:
*result = process->GetTotalPhysicalMemoryAvailableWithoutSystemResource();
return ResultSuccess;
case InfoType::UsedNonSystemMemorySize:
*result = process->GetTotalPhysicalMemoryUsedWithoutSystemResource();
return ResultSuccess;
case InfoType::FreeThreadCount:
*result = process->GetFreeThreadCount();
return ResultSuccess;
default:
break;
}
LOG_ERROR(Kernel_SVC, "Unimplemented svcGetInfo id=0x{:016X}", info_id);
return ResultInvalidEnumValue;
}
case InfoType::DebuggerAttached:
*result = 0;
return ResultSuccess;
case InfoType::ResourceLimit: {
if (handle != 0) {
LOG_ERROR(Kernel, "Handle is non zero! handle={:08X}", handle);
return ResultInvalidHandle;
}
if (info_sub_id != 0) {
LOG_ERROR(Kernel, "Info sub id is non zero! info_id={}, info_sub_id={}", info_id,
info_sub_id);
return ResultInvalidCombination;
}
KProcess* const current_process = GetCurrentProcessPointer(system.Kernel());
KHandleTable& handle_table = current_process->GetHandleTable();
const auto resource_limit = current_process->GetResourceLimit();
if (!resource_limit) {
*result = Svc::InvalidHandle;
// Yes, the kernel considers this a successful operation.
return ResultSuccess;
}
Handle resource_handle{};
R_TRY(handle_table.Add(&resource_handle, resource_limit));
*result = resource_handle;
return ResultSuccess;
}
case InfoType::RandomEntropy:
if (handle != 0) {
LOG_ERROR(Kernel_SVC, "Process Handle is non zero, expected 0 result but got {:016X}",
handle);
return ResultInvalidHandle;
}
if (info_sub_id >= KProcess::RANDOM_ENTROPY_SIZE) {
LOG_ERROR(Kernel_SVC, "Entropy size is out of range, expected {} but got {}",
KProcess::RANDOM_ENTROPY_SIZE, info_sub_id);
return ResultInvalidCombination;
}
*result = GetCurrentProcess(system.Kernel()).GetRandomEntropy(info_sub_id);
return ResultSuccess;
case InfoType::InitialProcessIdRange:
LOG_WARNING(Kernel_SVC,
"(STUBBED) Attempted to query privileged process id bounds, returned 0");
*result = 0;
return ResultSuccess;
case InfoType::ThreadTickCount: {
constexpr u64 num_cpus = 4;
if (info_sub_id != 0xFFFFFFFFFFFFFFFF && info_sub_id >= num_cpus) {
LOG_ERROR(Kernel_SVC, "Core count is out of range, expected {} but got {}", num_cpus,
info_sub_id);
return ResultInvalidCombination;
}
KScopedAutoObject thread = GetCurrentProcess(system.Kernel())
.GetHandleTable()
.GetObject<KThread>(static_cast<Handle>(handle));
if (thread.IsNull()) {
LOG_ERROR(Kernel_SVC, "Thread handle does not exist, handle=0x{:08X}",
static_cast<Handle>(handle));
return ResultInvalidHandle;
}
const auto& core_timing = system.CoreTiming();
const auto& scheduler = *system.Kernel().CurrentScheduler();
const auto* const current_thread = GetCurrentThreadPointer(system.Kernel());
const bool same_thread = current_thread == thread.GetPointerUnsafe();
const u64 prev_ctx_ticks = scheduler.GetLastContextSwitchTime();
u64 out_ticks = 0;
if (same_thread && info_sub_id == 0xFFFFFFFFFFFFFFFF) {
const u64 thread_ticks = current_thread->GetCpuTime();
out_ticks = thread_ticks + (core_timing.GetCPUTicks() - prev_ctx_ticks);
} else if (same_thread && info_sub_id == system.Kernel().CurrentPhysicalCoreIndex()) {
out_ticks = core_timing.GetCPUTicks() - prev_ctx_ticks;
}
*result = out_ticks;
return ResultSuccess;
}
case InfoType::IdleTickCount: {
// Verify the input handle is invalid.
R_UNLESS(handle == InvalidHandle, ResultInvalidHandle);
// Verify the requested core is valid.
const bool core_valid =
(info_sub_id == 0xFFFFFFFFFFFFFFFF) ||
(info_sub_id == static_cast<u64>(system.Kernel().CurrentPhysicalCoreIndex()));
R_UNLESS(core_valid, ResultInvalidCombination);
// Get the idle tick count.
*result = system.Kernel().CurrentScheduler()->GetIdleThread()->GetCpuTime();
return ResultSuccess;
}
case InfoType::MesosphereCurrentProcess: {
// Verify the input handle is invalid.
R_UNLESS(handle == InvalidHandle, ResultInvalidHandle);
// Verify the sub-type is valid.
R_UNLESS(info_sub_id == 0, ResultInvalidCombination);
// Get the handle table.
KProcess* current_process = GetCurrentProcessPointer(system.Kernel());
KHandleTable& handle_table = current_process->GetHandleTable();
// Get a new handle for the current process.
Handle tmp;
R_TRY(handle_table.Add(&tmp, current_process));
// Set the output.
*result = tmp;
// We succeeded.
return ResultSuccess;
}
default:
LOG_ERROR(Kernel_SVC, "Unimplemented svcGetInfo id=0x{:016X}", info_id);
return ResultInvalidEnumValue;
}
}
Result GetSystemInfo(Core::System& system, uint64_t* out, SystemInfoType info_type, Handle handle,
uint64_t info_subtype) {
UNIMPLEMENTED();
R_THROW(ResultNotImplemented);
}
Result GetInfo64(Core::System& system, uint64_t* out, InfoType info_type, Handle handle,
uint64_t info_subtype) {
R_RETURN(GetInfo(system, out, info_type, handle, info_subtype));
}
Result GetSystemInfo64(Core::System& system, uint64_t* out, SystemInfoType info_type, Handle handle,
uint64_t info_subtype) {
R_RETURN(GetSystemInfo(system, out, info_type, handle, info_subtype));
}
Result GetInfo64From32(Core::System& system, uint64_t* out, InfoType info_type, Handle handle,
uint64_t info_subtype) {
R_RETURN(GetInfo(system, out, info_type, handle, info_subtype));
}
Result GetSystemInfo64From32(Core::System& system, uint64_t* out, SystemInfoType info_type,
Handle handle, uint64_t info_subtype) {
R_RETURN(GetSystemInfo(system, out, info_type, handle, info_subtype));
}
} // namespace Kernel::Svc
