ryujinx/Ryujinx.HLE/HOS/ProgramLoader.cs

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using ChocolArm64.Memory;
using Ryujinx.Common;
using Ryujinx.Common.Logging;
using Ryujinx.HLE.HOS.Kernel;
using Ryujinx.HLE.Loaders.Executables;
using Ryujinx.HLE.Loaders.Npdm;
namespace Ryujinx.HLE.HOS
{
class ProgramLoader
{
private const bool AslrEnabled = true;
private const int ArgsHeaderSize = 8;
private const int ArgsDataSize = 0x9000;
private const int ArgsTotalSize = ArgsHeaderSize + ArgsDataSize;
public static bool LoadKernelInitalProcess(Horizon System, KernelInitialProcess Kip)
{
int EndOffset = Kip.DataOffset + Kip.Data.Length;
if (Kip.BssSize != 0)
{
EndOffset = Kip.BssOffset + Kip.BssSize;
}
int CodeSize = BitUtils.AlignUp(Kip.TextOffset + EndOffset, KMemoryManager.PageSize);
int CodePagesCount = CodeSize / KMemoryManager.PageSize;
ulong CodeBaseAddress = Kip.Addr39Bits ? 0x8000000UL : 0x200000UL;
ulong CodeAddress = CodeBaseAddress + (ulong)Kip.TextOffset;
int MmuFlags = 0;
if (AslrEnabled)
{
//TODO: Randomization.
MmuFlags |= 0x20;
}
if (Kip.Addr39Bits)
{
MmuFlags |= (int)AddressSpaceType.Addr39Bits << 1;
}
if (Kip.Is64Bits)
{
MmuFlags |= 1;
}
ProcessCreationInfo CreationInfo = new ProcessCreationInfo(
Kip.Name,
Kip.ProcessCategory,
Kip.TitleId,
CodeAddress,
CodePagesCount,
MmuFlags,
0,
0);
MemoryRegion MemRegion = Kip.IsService
? MemoryRegion.Service
: MemoryRegion.Application;
KMemoryRegionManager Region = System.MemoryRegions[(int)MemRegion];
KernelResult Result = Region.AllocatePages((ulong)CodePagesCount, false, out KPageList PageList);
if (Result != KernelResult.Success)
{
Logger.PrintError(LogClass.Loader, $"Process initialization returned error \"{Result}\".");
return false;
}
KProcess Process = new KProcess(System);
Result = Process.InitializeKip(
CreationInfo,
Kip.Capabilities,
PageList,
System.ResourceLimit,
MemRegion);
if (Result != KernelResult.Success)
{
Logger.PrintError(LogClass.Loader, $"Process initialization returned error \"{Result}\".");
return false;
}
Result = LoadIntoMemory(Process, Kip, CodeBaseAddress);
if (Result != KernelResult.Success)
{
Logger.PrintError(LogClass.Loader, $"Process initialization returned error \"{Result}\".");
return false;
}
Result = Process.Start(Kip.MainThreadPriority, (ulong)Kip.MainThreadStackSize);
if (Result != KernelResult.Success)
{
Logger.PrintError(LogClass.Loader, $"Process start returned error \"{Result}\".");
return false;
}
System.Processes.Add(Process.Pid, Process);
return true;
}
public static bool LoadStaticObjects(
Horizon System,
Npdm MetaData,
IExecutable[] StaticObjects,
byte[] Arguments = null)
{
ulong ArgsStart = 0;
int ArgsSize = 0;
ulong CodeStart = 0x8000000;
int CodeSize = 0;
ulong[] NsoBase = new ulong[StaticObjects.Length];
for (int Index = 0; Index < StaticObjects.Length; Index++)
{
IExecutable StaticObject = StaticObjects[Index];
int TextEnd = StaticObject.TextOffset + StaticObject.Text.Length;
int ROEnd = StaticObject.ROOffset + StaticObject.RO.Length;
int DataEnd = StaticObject.DataOffset + StaticObject.Data.Length + StaticObject.BssSize;
int NsoSize = TextEnd;
if ((uint)NsoSize < (uint)ROEnd)
{
NsoSize = ROEnd;
}
if ((uint)NsoSize < (uint)DataEnd)
{
NsoSize = DataEnd;
}
NsoSize = BitUtils.AlignUp(NsoSize, KMemoryManager.PageSize);
NsoBase[Index] = CodeStart + (ulong)CodeSize;
CodeSize += NsoSize;
if (Arguments != null && ArgsSize == 0)
{
ArgsStart = (ulong)CodeSize;
ArgsSize = BitUtils.AlignDown(Arguments.Length * 2 + ArgsTotalSize - 1, KMemoryManager.PageSize);
CodeSize += ArgsSize;
}
}
int CodePagesCount = CodeSize / KMemoryManager.PageSize;
int PersonalMmHeapPagesCount = MetaData.PersonalMmHeapSize / KMemoryManager.PageSize;
ProcessCreationInfo CreationInfo = new ProcessCreationInfo(
MetaData.TitleName,
MetaData.ProcessCategory,
MetaData.ACI0.TitleId,
CodeStart,
CodePagesCount,
MetaData.MmuFlags,
0,
PersonalMmHeapPagesCount);
KernelResult Result;
KResourceLimit ResourceLimit = new KResourceLimit(System);
long ApplicationRgSize = (long)System.MemoryRegions[(int)MemoryRegion.Application].Size;
Result = ResourceLimit.SetLimitValue(LimitableResource.Memory, ApplicationRgSize);
Result |= ResourceLimit.SetLimitValue(LimitableResource.Thread, 608);
Result |= ResourceLimit.SetLimitValue(LimitableResource.Event, 700);
Result |= ResourceLimit.SetLimitValue(LimitableResource.TransferMemory, 128);
Result |= ResourceLimit.SetLimitValue(LimitableResource.Session, 894);
if (Result != KernelResult.Success)
{
Logger.PrintError(LogClass.Loader, $"Process initialization failed setting resource limit values.");
return false;
}
KProcess Process = new KProcess(System);
Result = Process.Initialize(
CreationInfo,
MetaData.ACI0.KernelAccessControl.Capabilities,
ResourceLimit,
MemoryRegion.Application);
if (Result != KernelResult.Success)
{
Logger.PrintError(LogClass.Loader, $"Process initialization returned error \"{Result}\".");
return false;
}
for (int Index = 0; Index < StaticObjects.Length; Index++)
{
Logger.PrintInfo(LogClass.Loader, $"Loading image {Index} at 0x{NsoBase[Index]:x16}...");
Result = LoadIntoMemory(Process, StaticObjects[Index], NsoBase[Index]);
if (Result != KernelResult.Success)
{
Logger.PrintError(LogClass.Loader, $"Process initialization returned error \"{Result}\".");
return false;
}
}
Result = Process.Start(MetaData.MainThreadPriority, (ulong)MetaData.MainThreadStackSize);
if (Result != KernelResult.Success)
{
Logger.PrintError(LogClass.Loader, $"Process start returned error \"{Result}\".");
return false;
}
System.Processes.Add(Process.Pid, Process);
return true;
}
private static KernelResult LoadIntoMemory(KProcess Process, IExecutable Image, ulong BaseAddress)
{
ulong TextStart = BaseAddress + (ulong)Image.TextOffset;
ulong ROStart = BaseAddress + (ulong)Image.ROOffset;
ulong DataStart = BaseAddress + (ulong)Image.DataOffset;
ulong BssStart = BaseAddress + (ulong)Image.BssOffset;
ulong End = DataStart + (ulong)Image.Data.Length;
if (Image.BssSize != 0)
{
End = BssStart + (ulong)Image.BssSize;
}
Process.CpuMemory.WriteBytes((long)TextStart, Image.Text);
Process.CpuMemory.WriteBytes((long)ROStart, Image.RO);
Process.CpuMemory.WriteBytes((long)DataStart, Image.Data);
MemoryHelper.FillWithZeros(Process.CpuMemory, (long)BssStart, Image.BssSize);
KernelResult SetProcessMemoryPermission(ulong Address, ulong Size, MemoryPermission Permission)
{
if (Size == 0)
{
return KernelResult.Success;
}
Size = BitUtils.AlignUp(Size, KMemoryManager.PageSize);
return Process.MemoryManager.SetProcessMemoryPermission(Address, Size, Permission);
}
KernelResult Result = SetProcessMemoryPermission(TextStart, (ulong)Image.Text.Length, MemoryPermission.ReadAndExecute);
if (Result != KernelResult.Success)
{
return Result;
}
Result = SetProcessMemoryPermission(ROStart, (ulong)Image.RO.Length, MemoryPermission.Read);
if (Result != KernelResult.Success)
{
return Result;
}
return SetProcessMemoryPermission(DataStart, End - DataStart, MemoryPermission.ReadAndWrite);
}
}
}