public static KernelResult StartInitialProcess(
KernelContext context,
ProcessCreationInfo creationInfo,
ReadOnlySpan <int> capabilities,
int mainThreadPriority,
ThreadStart customThreadStart)
{
KProcess process = new KProcess(context);
KernelResult result = process.Initialize(
creationInfo,
capabilities,
context.ResourceLimit,
MemoryRegion.Service,
null,
customThreadStart);
if (result != KernelResult.Success)
{
return(result);
}
process.DefaultCpuCore = 3;
context.Processes.TryAdd(process.Pid, process);
return(process.Start(mainThreadPriority, 0x1000UL));
}
private KernelResult ParseProcessInfo(ProcessCreationInfo creationInfo)
{
//Ensure that the current kernel version is equal or above to the minimum required.
uint requiredKernelVersionMajor = (uint)Capabilities.KernelReleaseVersion >> 19;
uint requiredKernelVersionMinor = ((uint)Capabilities.KernelReleaseVersion >> 15) & 0xf;
if (System.EnableVersionChecks)
{
if (requiredKernelVersionMajor > KernelVersionMajor)
{
return(KernelResult.InvalidCombination);
}
if (requiredKernelVersionMajor != KernelVersionMajor && requiredKernelVersionMajor < 3)
{
return(KernelResult.InvalidCombination);
}
if (requiredKernelVersionMinor > KernelVersionMinor)
{
return(KernelResult.InvalidCombination);
}
}
KernelResult result = AllocateThreadLocalStorage(out ulong userExceptionContextAddress);
if (result != KernelResult.Success)
{
return(result);
}
UserExceptionContextAddress = userExceptionContextAddress;
MemoryHelper.FillWithZeros(CpuMemory, (long)userExceptionContextAddress, KTlsPageInfo.TlsEntrySize);
Name = creationInfo.Name;
_state = ProcessState.Created;
_creationTimestamp = PerformanceCounter.ElapsedMilliseconds;
MmuFlags = creationInfo.MmuFlags;
_category = creationInfo.Category;
TitleId = creationInfo.TitleId;
_entrypoint = creationInfo.CodeAddress;
_imageSize = (ulong)creationInfo.CodePagesCount * KMemoryManager.PageSize;
_useSystemMemBlocks = ((MmuFlags >> 6) & 1) != 0;
switch ((AddressSpaceType)((MmuFlags >> 1) & 7))
{
case AddressSpaceType.Addr32Bits:
case AddressSpaceType.Addr36Bits:
case AddressSpaceType.Addr39Bits:
_memoryUsageCapacity = MemoryManager.HeapRegionEnd -
MemoryManager.HeapRegionStart;
break;
case AddressSpaceType.Addr32BitsNoMap:
_memoryUsageCapacity = MemoryManager.HeapRegionEnd -
MemoryManager.HeapRegionStart +
MemoryManager.AliasRegionEnd -
MemoryManager.AliasRegionStart;
break;
default: throw new InvalidOperationException($"Invalid MMU flags value 0x{MmuFlags:x2}.");
}
GenerateRandomEntropy();
return(KernelResult.Success);
}
public KernelResult Initialize(
ProcessCreationInfo creationInfo,
int[] caps,
KResourceLimit resourceLimit,
MemoryRegion memRegion)
{
ResourceLimit = resourceLimit;
_memRegion = memRegion;
ulong personalMmHeapSize = GetPersonalMmHeapSize((ulong)creationInfo.PersonalMmHeapPagesCount, memRegion);
ulong codePagesCount = (ulong)creationInfo.CodePagesCount;
ulong neededSizeForProcess = personalMmHeapSize + codePagesCount * KMemoryManager.PageSize;
if (neededSizeForProcess != 0 && resourceLimit != null)
{
if (!resourceLimit.Reserve(LimitableResource.Memory, neededSizeForProcess))
{
return(KernelResult.ResLimitExceeded);
}
}
void CleanUpForError()
{
if (neededSizeForProcess != 0 && resourceLimit != null)
{
resourceLimit.Release(LimitableResource.Memory, neededSizeForProcess);
}
}
PersonalMmHeapPagesCount = (ulong)creationInfo.PersonalMmHeapPagesCount;
KMemoryBlockAllocator memoryBlockAllocator;
if (PersonalMmHeapPagesCount != 0)
{
memoryBlockAllocator = new KMemoryBlockAllocator(PersonalMmHeapPagesCount * KMemoryManager.PageSize);
}
else
{
memoryBlockAllocator = (MmuFlags & 0x40) != 0
? System.LargeMemoryBlockAllocator
: System.SmallMemoryBlockAllocator;
}
AddressSpaceType addrSpaceType = (AddressSpaceType)((creationInfo.MmuFlags >> 1) & 7);
bool aslrEnabled = ((creationInfo.MmuFlags >> 5) & 1) != 0;
ulong codeAddress = creationInfo.CodeAddress;
ulong codeSize = codePagesCount * KMemoryManager.PageSize;
KernelResult result = MemoryManager.InitializeForProcess(
addrSpaceType,
aslrEnabled,
!aslrEnabled,
memRegion,
codeAddress,
codeSize,
memoryBlockAllocator);
if (result != KernelResult.Success)
{
CleanUpForError();
return(result);
}
if (!ValidateCodeAddressAndSize(codeAddress, codeSize))
{
CleanUpForError();
return(KernelResult.InvalidMemRange);
}
result = MemoryManager.MapNewProcessCode(
codeAddress,
codePagesCount,
MemoryState.CodeStatic,
MemoryPermission.None);
if (result != KernelResult.Success)
{
CleanUpForError();
return(result);
}
result = Capabilities.InitializeForUser(caps, MemoryManager);
if (result != KernelResult.Success)
{
CleanUpForError();
return(result);
}
Pid = System.GetProcessId();
if (Pid == -1 || (ulong)Pid < Horizon.InitialProcessId)
{
throw new InvalidOperationException($"Invalid Process Id {Pid}.");
}
result = ParseProcessInfo(creationInfo);
if (result != KernelResult.Success)
{
CleanUpForError();
}
return(result);
}
public KernelResult InitializeKip(
ProcessCreationInfo creationInfo,
int[] caps,
KPageList pageList,
KResourceLimit resourceLimit,
MemoryRegion memRegion)
{
ResourceLimit = resourceLimit;
_memRegion = memRegion;
AddressSpaceType addrSpaceType = (AddressSpaceType)((creationInfo.MmuFlags >> 1) & 7);
bool aslrEnabled = ((creationInfo.MmuFlags >> 5) & 1) != 0;
ulong codeAddress = creationInfo.CodeAddress;
ulong codeSize = (ulong)creationInfo.CodePagesCount * KMemoryManager.PageSize;
KMemoryBlockAllocator memoryBlockAllocator = (MmuFlags & 0x40) != 0
? System.LargeMemoryBlockAllocator
: System.SmallMemoryBlockAllocator;
KernelResult result = MemoryManager.InitializeForProcess(
addrSpaceType,
aslrEnabled,
!aslrEnabled,
memRegion,
codeAddress,
codeSize,
memoryBlockAllocator);
if (result != KernelResult.Success)
{
return(result);
}
if (!ValidateCodeAddressAndSize(codeAddress, codeSize))
{
return(KernelResult.InvalidMemRange);
}
result = MemoryManager.MapPages(
codeAddress,
pageList,
MemoryState.CodeStatic,
MemoryPermission.None);
if (result != KernelResult.Success)
{
return(result);
}
result = Capabilities.InitializeForKernel(caps, MemoryManager);
if (result != KernelResult.Success)
{
return(result);
}
Pid = System.GetKipId();
if (Pid == 0 || (ulong)Pid >= Horizon.InitialProcessId)
{
throw new InvalidOperationException($"Invalid KIP Id {Pid}.");
}
result = ParseProcessInfo(creationInfo);
return(result);
}
public KernelResult Initialize(
ProcessCreationInfo CreationInfo,
int[] Caps,
KResourceLimit ResourceLimit,
MemoryRegion MemRegion)
{
this.ResourceLimit = ResourceLimit;
this.MemRegion = MemRegion;
ulong PersonalMmHeapSize = GetPersonalMmHeapSize((ulong)CreationInfo.PersonalMmHeapPagesCount, MemRegion);
ulong CodePagesCount = (ulong)CreationInfo.CodePagesCount;
ulong NeededSizeForProcess = PersonalMmHeapSize + CodePagesCount * KMemoryManager.PageSize;
if (NeededSizeForProcess != 0 && ResourceLimit != null)
{
if (!ResourceLimit.Reserve(LimitableResource.Memory, NeededSizeForProcess))
{
return(KernelResult.ResLimitExceeded);
}
}
void CleanUpForError()
{
if (NeededSizeForProcess != 0 && ResourceLimit != null)
{
ResourceLimit.Release(LimitableResource.Memory, NeededSizeForProcess);
}
}
PersonalMmHeapPagesCount = (ulong)CreationInfo.PersonalMmHeapPagesCount;
KMemoryBlockAllocator MemoryBlockAllocator;
if (PersonalMmHeapPagesCount != 0)
{
MemoryBlockAllocator = new KMemoryBlockAllocator(PersonalMmHeapPagesCount * KMemoryManager.PageSize);
}
else
{
MemoryBlockAllocator = (MmuFlags & 0x40) != 0
? System.LargeMemoryBlockAllocator
: System.SmallMemoryBlockAllocator;
}
AddressSpaceType AddrSpaceType = (AddressSpaceType)((CreationInfo.MmuFlags >> 1) & 7);
bool AslrEnabled = ((CreationInfo.MmuFlags >> 5) & 1) != 0;
ulong CodeAddress = CreationInfo.CodeAddress;
ulong CodeSize = CodePagesCount * KMemoryManager.PageSize;
KernelResult Result = MemoryManager.InitializeForProcess(
AddrSpaceType,
AslrEnabled,
!AslrEnabled,
MemRegion,
CodeAddress,
CodeSize,
MemoryBlockAllocator);
if (Result != KernelResult.Success)
{
CleanUpForError();
return(Result);
}
if (!ValidateCodeAddressAndSize(CodeAddress, CodeSize))
{
CleanUpForError();
return(KernelResult.InvalidMemRange);
}
Result = MemoryManager.MapNewProcessCode(
CodeAddress,
CodePagesCount,
MemoryState.CodeStatic,
MemoryPermission.None);
if (Result != KernelResult.Success)
{
CleanUpForError();
return(Result);
}
Result = Capabilities.InitializeForUser(Caps, MemoryManager);
if (Result != KernelResult.Success)
{
CleanUpForError();
return(Result);
}
Pid = System.GetProcessId();
if (Pid == -1 || (ulong)Pid < Horizon.InitialProcessId)
{
throw new InvalidOperationException($"Invalid Process Id {Pid}.");
}
Result = ParseProcessInfo(CreationInfo);
if (Result != KernelResult.Success)
{
CleanUpForError();
}
return(Result);
}
public KernelResult InitializeKip(
ProcessCreationInfo CreationInfo,
int[] Caps,
KPageList PageList,
KResourceLimit ResourceLimit,
MemoryRegion MemRegion)
{
this.ResourceLimit = ResourceLimit;
this.MemRegion = MemRegion;
AddressSpaceType AddrSpaceType = (AddressSpaceType)((CreationInfo.MmuFlags >> 1) & 7);
bool AslrEnabled = ((CreationInfo.MmuFlags >> 5) & 1) != 0;
ulong CodeAddress = CreationInfo.CodeAddress;
ulong CodeSize = (ulong)CreationInfo.CodePagesCount * KMemoryManager.PageSize;
KMemoryBlockAllocator MemoryBlockAllocator = (MmuFlags & 0x40) != 0
? System.LargeMemoryBlockAllocator
: System.SmallMemoryBlockAllocator;
KernelResult Result = MemoryManager.InitializeForProcess(
AddrSpaceType,
AslrEnabled,
!AslrEnabled,
MemRegion,
CodeAddress,
CodeSize,
MemoryBlockAllocator);
if (Result != KernelResult.Success)
{
return(Result);
}
if (!ValidateCodeAddressAndSize(CodeAddress, CodeSize))
{
return(KernelResult.InvalidMemRange);
}
Result = MemoryManager.MapPages(
CodeAddress,
PageList,
MemoryState.CodeStatic,
MemoryPermission.None);
if (Result != KernelResult.Success)
{
return(Result);
}
Result = Capabilities.InitializeForKernel(Caps, MemoryManager);
if (Result != KernelResult.Success)
{
return(Result);
}
Pid = System.GetKipId();
if (Pid == 0 || (ulong)Pid >= Horizon.InitialProcessId)
{
throw new InvalidOperationException($"Invalid KIP Id {Pid}.");
}
Result = ParseProcessInfo(CreationInfo);
return(Result);
}