public KernelContext(
Switch device,
MemoryBlock memory,
MemorySize memorySize,
MemoryArrange memoryArrange)
{
Device = device;
Memory = memory;
Running = true;
Syscall = new Syscall(this);
SyscallHandler = new SyscallHandler(this);
ResourceLimit = new KResourceLimit(this);
KernelInit.InitializeResourceLimit(ResourceLimit, memorySize);
MemoryRegions = KernelInit.GetMemoryRegions(memorySize, memoryArrange);
LargeMemoryBlockAllocator = new KMemoryBlockAllocator(KernelConstants.MemoryBlockAllocatorSize * 2);
SmallMemoryBlockAllocator = new KMemoryBlockAllocator(KernelConstants.MemoryBlockAllocatorSize);
UserSlabHeapPages = new KSlabHeap(
KernelConstants.UserSlabHeapBase,
KernelConstants.UserSlabHeapItemSize,
KernelConstants.UserSlabHeapSize);
CriticalSection = new KCriticalSection(this);
Schedulers = new KScheduler[KScheduler.CpuCoresCount];
PriorityQueue = new KPriorityQueue();
TimeManager = new KTimeManager(this);
Synchronization = new KSynchronization(this);
ContextIdManager = new KContextIdManager();
for (int core = 0; core < KScheduler.CpuCoresCount; core++)
{
Schedulers[core] = new KScheduler(this, core);
}
StartPreemptionThread();
KernelInitialized = true;
Processes = new ConcurrentDictionary <long, KProcess>();
AutoObjectNames = new ConcurrentDictionary <string, KAutoObject>();
_kipId = KernelConstants.InitialKipId;
_processId = KernelConstants.InitialProcessId;
}
public KernelContext(Switch device, MemoryBlock memory)
{
Device = device;
Memory = memory;
Syscall = new Syscall(device, this);
SyscallHandler = new SyscallHandler(this);
ThreadCounter = new CountdownEvent(1);
ResourceLimit = new KResourceLimit(this);
KernelInit.InitializeResourceLimit(ResourceLimit);
MemoryRegions = KernelInit.GetMemoryRegions();
LargeMemoryBlockAllocator = new KMemoryBlockAllocator(KernelConstants.MemoryBlockAllocatorSize * 2);
SmallMemoryBlockAllocator = new KMemoryBlockAllocator(KernelConstants.MemoryBlockAllocatorSize);
UserSlabHeapPages = new KSlabHeap(
KernelConstants.UserSlabHeapBase,
KernelConstants.UserSlabHeapItemSize,
KernelConstants.UserSlabHeapSize);
CriticalSection = new KCriticalSection(this);
Scheduler = new KScheduler(this);
TimeManager = new KTimeManager();
Synchronization = new KSynchronization(this);
ContextIdManager = new KContextIdManager();
Scheduler.StartAutoPreemptionThread();
KernelInitialized = true;
Processes = new ConcurrentDictionary <long, KProcess>();
AutoObjectNames = new ConcurrentDictionary <string, KAutoObject>();
_kipId = KernelConstants.InitialKipId;
_processId = KernelConstants.InitialProcessId;
}
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);
}
