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PPTC Follow-up. (#1712)

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* Added support for offline invalidation, via PPTC, of low cq translations replaced by high cq translations; both on a single run and between runs.

Added invalidation of .cache files in the event of reuse on a different user operating system.

Added .info and .cache files invalidation in case of a failed stream decompression.

Nits.

* InternalVersion = 1712;

* Nits.

* Address comment.

* Get rid of BinaryFormatter.

Nits.

* Move Ptc.LoadTranslations().

Nits.

* Nits.

* Fixed corner cases (in case backup copies have to be used). Added save logs.

* Not core fixes.

* Complement to the previous commit. Added load logs. Removed BinaryFormatter leftovers.

* Add LoadTranslations log.

* Nits.

* Removed the search and management of LowCq overlapping functions.

* Final increment of .info and .cache flags.

* Nit.

* GetIndirectFunctionAddress(): Validate that writing actually takes place in dynamic table memory range (and not elsewhere).

* Fix Ptc.UpdateInfo() due to rebase.

* Nit for retrigger Checks.

* Nit for retrigger Checks.
This commit is contained in:
LDj3SNuD 2020-12-17 20:32:09 +01:00 committed by GitHub
parent 10aa11ce13
commit b5c215111d
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GPG key ID: 4AEE18F83AFDEB23
16 changed files with 670 additions and 169 deletions
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2
ARMeilleure/CodeGen/Unwinding/UnwindInfo.cs
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@ -2,6 +2,8 @@ namespace ARMeilleure.CodeGen.Unwinding
{
struct UnwindInfo
{
public const int Stride = 4; // Bytes.
public UnwindPushEntry[] PushEntries { get; }
public int PrologSize { get; }

2
ARMeilleure/CodeGen/Unwinding/UnwindPushEntry.cs
View file

@ -2,6 +2,8 @@ namespace ARMeilleure.CodeGen.Unwinding
{
struct UnwindPushEntry
{
public const int Stride = 16; // Bytes.
public UnwindPseudoOp PseudoOp { get; }
public int PrologOffset { get; }
public int RegIndex { get; }

2
ARMeilleure/Decoders/Decoder.cs
View file

@ -26,6 +26,8 @@ namespace ARMeilleure.Decoders
Dictionary<ulong, Block> visited = new Dictionary<ulong, Block>();
Debug.Assert(MaxInstsPerFunctionLowCq <= MaxInstsPerFunction);
int opsCount = 0;
int instructionLimit = highCq ? MaxInstsPerFunction : MaxInstsPerFunctionLowCq;

3
ARMeilleure/Instructions/NativeInterface.cs
View file

@ -2,6 +2,7 @@ using ARMeilleure.Memory;
using ARMeilleure.State;
using ARMeilleure.Translation;
using System;
using System.Diagnostics;
using System.Runtime.InteropServices;
namespace ARMeilleure.Instructions
@ -254,6 +255,8 @@ namespace ARMeilleure.Instructions
if (function.HighCq)
{
Debug.Assert(Context.Translator.JumpTable.CheckEntryFromAddressDynamicTable((IntPtr)entryAddress));
// Rewrite the host function address in the table to point to the highCq function.
Marshal.WriteInt64((IntPtr)entryAddress, 8, (long)ptr);
}

6
ARMeilleure/State/ExecutionMode.cs
View file

@ -2,8 +2,8 @@ namespace ARMeilleure.State
{
enum ExecutionMode
{
Aarch32Arm,
Aarch32Thumb,
Aarch64
Aarch32Arm = 0,
Aarch32Thumb = 1,
Aarch64 = 2
}
}

65
ARMeilleure/Translation/Cache/JumpTable.cs
View file

@ -14,7 +14,7 @@ namespace ARMeilleure.Translation.Cache
// The jump table is a block of (guestAddress, hostAddress) function mappings.
// Each entry corresponds to one branch in a JIT compiled function. The entries are
// reserved specifically for each call.
// The _dependants dictionary can be used to update the hostAddress for any functions that change.
// The Dependants dictionary can be used to update the hostAddress for any functions that change.
public const int JumpTableStride = 16; // 8 byte guest address, 8 byte host address.
@ -42,7 +42,7 @@ namespace ARMeilleure.Translation.Cache
private const int DynamicTableSize = 1048576;
private const int DynamicTableByteSize = DynamicTableSize * DynamicTableStride;
private const int DynamicEntryTag = 1 << 31;
public const int DynamicEntryTag = 1 << 31;
private readonly ReservedRegion _jumpRegion;
private readonly ReservedRegion _dynamicRegion;
@ -87,14 +87,14 @@ namespace ARMeilleure.Translation.Cache
}
}
foreach (var item in ptcJumpTable.Dependants)
foreach (var kv in ptcJumpTable.Dependants)
{
Dependants.TryAdd(item.Key, new List<int>(item.Value));
Dependants.TryAdd(kv.Key, new List<int>(kv.Value));
}
foreach (var item in ptcJumpTable.Owners)
foreach (var kv in ptcJumpTable.Owners)
{
Owners.TryAdd(item.Key, new List<int>(item.Value));
Owners.TryAdd(kv.Key, new List<int>(kv.Value));
}
}
@ -182,29 +182,14 @@ namespace ARMeilleure.Translation.Cache
// For future use.
public void RemoveFunctionEntries(ulong guestAddress)
{
if (Owners.TryRemove(guestAddress, out List<int> list))
Targets.TryRemove(guestAddress, out _);
Dependants.TryRemove(guestAddress, out _);
if (Owners.TryRemove(guestAddress, out List<int> entries))
{
for (int i = 0; i < list.Count; i++)
foreach (int entry in entries)
{
int entry = list[i];
bool isDynamic = (entry & DynamicEntryTag) != 0;
entry &= ~DynamicEntryTag;
if (isDynamic)
{
IntPtr addr = GetEntryAddressDynamicTable(entry);
for (int j = 0; j < DynamicTableElems; j++)
{
Marshal.WriteInt64(addr + j * JumpTableStride, 0, 0L);
Marshal.WriteInt64(addr + j * JumpTableStride, 8, 0L);
}
DynTable.FreeEntry(entry);
}
else
if ((entry & DynamicEntryTag) == 0)
{
IntPtr addr = GetEntryAddressJumpTable(entry);
@ -213,6 +198,18 @@ namespace ARMeilleure.Translation.Cache
Table.FreeEntry(entry);
}
else
{
IntPtr addr = GetEntryAddressDynamicTable(entry & ~DynamicEntryTag);
for (int j = 0; j < DynamicTableElems; j++)
{
Marshal.WriteInt64(addr + j * JumpTableStride, 0, 0L);
Marshal.WriteInt64(addr + j * JumpTableStride, 8, 0L);
}
DynTable.FreeEntry(entry & ~DynamicEntryTag);
}
}
}
}
@ -259,6 +256,20 @@ namespace ARMeilleure.Translation.Cache
return _dynamicRegion.Pointer + entry * DynamicTableStride;
}
public bool CheckEntryFromAddressJumpTable(IntPtr entryAddress)
{
int entry = Math.DivRem((int)((ulong)entryAddress - (ulong)_jumpRegion.Pointer), JumpTableStride, out int rem);
return rem == 0 && Table.EntryIsValid(entry);
}
public bool CheckEntryFromAddressDynamicTable(IntPtr entryAddress)
{
int entry = Math.DivRem((int)((ulong)entryAddress - (ulong)_dynamicRegion.Pointer), DynamicTableStride, out int rem);
return rem == 0 && DynTable.EntryIsValid(entry);
}
public void Dispose()
{
_jumpRegion.Dispose();

2
ARMeilleure/Translation/DelegateInfo.cs
View file

@ -3,7 +3,7 @@ using System.Runtime.InteropServices;
namespace ARMeilleure.Translation
{
sealed class DelegateInfo
class DelegateInfo
{
private readonly Delegate _dlg; // Ensure that this delegate will not be garbage collected.

72
ARMeilleure/Translation/JumpTableEntryAllocator.cs Normal file
View file

@ -0,0 +1,72 @@
using ARMeilleure.Common;
using System.Collections.Generic;
using System.Diagnostics;
namespace ARMeilleure.Translation
{
class JumpTableEntryAllocator
{
private readonly BitMap _bitmap;
private int _freeHint;
public JumpTableEntryAllocator()
{
_bitmap = new BitMap();
}
public bool EntryIsValid(int entryIndex)
{
lock (_bitmap)
{
return _bitmap.IsSet(entryIndex);
}
}
public void SetEntry(int entryIndex)
{
lock (_bitmap)
{
_bitmap.Set(entryIndex);
}
}
public int AllocateEntry()
{
lock (_bitmap)
{
int entryIndex;
if (!_bitmap.IsSet(_freeHint))
{
entryIndex = _freeHint;
}
else
{
entryIndex = _bitmap.FindFirstUnset();
}
_freeHint = entryIndex + 1;
bool wasSet = _bitmap.Set(entryIndex);
Debug.Assert(wasSet);
return entryIndex;
}
}
public void FreeEntry(int entryIndex)
{
lock (_bitmap)
{
_bitmap.Clear(entryIndex);
_freeHint = entryIndex;
}
}
public IEnumerable<int> GetEntries()
{
return _bitmap;
}
}
}

233
ARMeilleure/Translation/PTC/Ptc.cs
View file

@ -12,7 +12,7 @@ using System.Diagnostics;
using System.IO;
using System.IO.Compression;
using System.Runtime.InteropServices;
using System.Runtime.Serialization.Formatters.Binary;
using System.Security.Cryptography;
using System.Threading;
using System.Threading.Tasks;
@ -22,7 +22,7 @@ namespace ARMeilleure.Translation.PTC
{
private const string HeaderMagic = "PTChd";
private const int InternalVersion = 1519; //! To be incremented manually for each change to the ARMeilleure project.
private const uint InternalVersion = 1713; //! To be incremented manually for each change to the ARMeilleure project.
private const string ActualDir = "0";
private const string BackupDir = "1";
@ -34,6 +34,7 @@ namespace ARMeilleure.Translation.PTC
internal const int JumpPointerIndex = -2; // Must be a negative value.
internal const int DynamicPointerIndex = -3; // Must be a negative value.
private const byte FillingByte = 0x00;
private const CompressionLevel SaveCompressionLevel = CompressionLevel.Fastest;
private static readonly MemoryStream _infosStream;
@ -43,8 +44,6 @@ namespace ARMeilleure.Translation.PTC
private static readonly BinaryWriter _infosWriter;
private static readonly BinaryFormatter _binaryFormatter;
private static readonly ManualResetEvent _waitEvent;
private static readonly AutoResetEvent _loggerEvent;
@ -54,7 +53,6 @@ namespace ARMeilleure.Translation.PTC
private static bool _disposed;
private static volatile int _translateCount;
private static volatile int _rejitCount;
internal static PtcJumpTable PtcJumpTable { get; private set; }
@ -75,8 +73,6 @@ namespace ARMeilleure.Translation.PTC
_infosWriter = new BinaryWriter(_infosStream, EncodingCache.UTF8NoBOM, true);
_binaryFormatter = new BinaryFormatter();
_waitEvent = new ManualResetEvent(true);
_loggerEvent = new AutoResetEvent(false);
@ -174,26 +170,26 @@ namespace ARMeilleure.Translation.PTC
if (fileInfoActual.Exists && fileInfoActual.Length != 0L)
{
if (!Load(fileNameActual))
if (!Load(fileNameActual, false))
{
if (fileInfoBackup.Exists && fileInfoBackup.Length != 0L)
{
Load(fileNameBackup);
Load(fileNameBackup, true);
}
}
}
else if (fileInfoBackup.Exists && fileInfoBackup.Length != 0L)
{
Load(fileNameBackup);
Load(fileNameBackup, true);
}
}
private static bool Load(string fileName)
private static bool Load(string fileName, bool isBackup)
{
using (FileStream compressedStream = new FileStream(fileName, FileMode.Open))
using (DeflateStream deflateStream = new DeflateStream(compressedStream, CompressionMode.Decompress, true))
using (MemoryStream stream = new MemoryStream())
using (System.Security.Cryptography.MD5 md5 = System.Security.Cryptography.MD5.Create())
using (MD5 md5 = MD5.Create())
{
int hashSize = md5.HashSize / 8;
@ -247,6 +243,13 @@ namespace ARMeilleure.Translation.PTC
return false;
}
if (header.OSPlatform != GetOSPlatform())
{
InvalidateCompressedStream(compressedStream);
return false;
}
if (header.InfosLen % InfoEntry.Stride != 0)
{
InvalidateCompressedStream(compressedStream);
@ -266,7 +269,7 @@ namespace ARMeilleure.Translation.PTC
try
{
PtcJumpTable = (PtcJumpTable)_binaryFormatter.Deserialize(stream);
PtcJumpTable = PtcJumpTable.Deserialize(stream);
}
catch
{
@ -281,9 +284,13 @@ namespace ARMeilleure.Translation.PTC
_codesStream.Write(codesBuf, 0, header.CodesLen);
_relocsStream.Write(relocsBuf, 0, header.RelocsLen);
_unwindInfosStream.Write(unwindInfosBuf, 0, header.UnwindInfosLen);
return true;
}
long fileSize = new FileInfo(fileName).Length;
Logger.Info?.Print(LogClass.Ptc, $"{(isBackup ? "Loaded Backup Translation Cache" : "Loaded Translation Cache")} (size: {fileSize} bytes, translated functions: {GetInfosEntriesCount()}).");
return true;
}
private static bool CompareHash(ReadOnlySpan<byte> currentHash, ReadOnlySpan<byte> expectedHash)
@ -299,8 +306,9 @@ namespace ARMeilleure.Translation.PTC
header.Magic = headerReader.ReadString();
header.CacheFileVersion = headerReader.ReadInt32();
header.CacheFileVersion = headerReader.ReadUInt32();
header.FeatureInfo = headerReader.ReadUInt64();
header.OSPlatform = headerReader.ReadUInt32();
header.InfosLen = headerReader.ReadInt32();
header.CodesLen = headerReader.ReadInt32();
@ -338,7 +346,7 @@ namespace ARMeilleure.Translation.PTC
private static void Save(string fileName)
{
using (MemoryStream stream = new MemoryStream())
using (System.Security.Cryptography.MD5 md5 = System.Security.Cryptography.MD5.Create())
using (MD5 md5 = MD5.Create())
{
int hashSize = md5.HashSize / 8;
@ -351,7 +359,7 @@ namespace ARMeilleure.Translation.PTC
_relocsStream.WriteTo(stream);
_unwindInfosStream.WriteTo(stream);
_binaryFormatter.Serialize(stream, PtcJumpTable);
PtcJumpTable.Serialize(stream, PtcJumpTable);
stream.Seek((long)hashSize, SeekOrigin.Begin);
byte[] hash = md5.ComputeHash(stream);
@ -377,6 +385,10 @@ namespace ARMeilleure.Translation.PTC
}
}
}
long fileSize = new FileInfo(fileName).Length;
Logger.Info?.Print(LogClass.Ptc, $"Saved Translation Cache (size: {fileSize} bytes, translated functions: {GetInfosEntriesCount()}).");
}
private static void WriteHeader(MemoryStream stream)
@ -385,8 +397,9 @@ namespace ARMeilleure.Translation.PTC
{
headerWriter.Write((string)HeaderMagic); // Header.Magic
headerWriter.Write((int)InternalVersion); // Header.CacheFileVersion
headerWriter.Write((uint)InternalVersion); // Header.CacheFileVersion
headerWriter.Write((ulong)GetFeatureInfo()); // Header.FeatureInfo
headerWriter.Write((uint)GetOSPlatform()); // Header.OSPlatform
headerWriter.Write((int)_infosStream.Length); // Header.InfosLen
headerWriter.Write((int)_codesStream.Length); // Header.CodesLen
@ -395,7 +408,7 @@ namespace ARMeilleure.Translation.PTC
}
}
internal static void LoadTranslations(ConcurrentDictionary<ulong, TranslatedFunction> funcs, IntPtr pageTablePointer, JumpTable jumpTable)
internal static void LoadTranslations(ConcurrentDictionary<ulong, TranslatedFunction> funcs, IMemoryManager memory, JumpTable jumpTable)
{
if ((int)_infosStream.Length == 0 ||
(int)_codesStream.Length == 0 ||
@ -417,26 +430,44 @@ namespace ARMeilleure.Translation.PTC
using (BinaryReader relocsReader = new BinaryReader(_relocsStream, EncodingCache.UTF8NoBOM, true))
using (BinaryReader unwindInfosReader = new BinaryReader(_unwindInfosStream, EncodingCache.UTF8NoBOM, true))
{
int infosEntriesCount = (int)_infosStream.Length / InfoEntry.Stride;
for (int i = 0; i < infosEntriesCount; i++)
for (int i = 0; i < GetInfosEntriesCount(); i++)
{
InfoEntry infoEntry = ReadInfo(infosReader);
byte[] code = ReadCode(codesReader, infoEntry.CodeLen);
if (infoEntry.RelocEntriesCount != 0)
if (infoEntry.Stubbed)
{
RelocEntry[] relocEntries = GetRelocEntries(relocsReader, infoEntry.RelocEntriesCount);
PatchCode(code, relocEntries, pageTablePointer, jumpTable);
SkipCode(infoEntry.CodeLen);
SkipReloc(infoEntry.RelocEntriesCount);
SkipUnwindInfo(unwindInfosReader);
}
else if (infoEntry.HighCq || !PtcProfiler.ProfiledFuncs.TryGetValue(infoEntry.Address, out var value) || !value.highCq)
{
byte[] code = ReadCode(codesReader, infoEntry.CodeLen);
UnwindInfo unwindInfo = ReadUnwindInfo(unwindInfosReader);
if (infoEntry.RelocEntriesCount != 0)
{
RelocEntry[] relocEntries = GetRelocEntries(relocsReader, infoEntry.RelocEntriesCount);
TranslatedFunction func = FastTranslate(code, infoEntry.GuestSize, unwindInfo, infoEntry.HighCq);
PatchCode(code, relocEntries, memory.PageTablePointer, jumpTable);
}
funcs.AddOrUpdate(infoEntry.Address, func, (key, oldFunc) => func.HighCq && !oldFunc.HighCq ? func : oldFunc);
UnwindInfo unwindInfo = ReadUnwindInfo(unwindInfosReader);
TranslatedFunction func = FastTranslate(code, infoEntry.GuestSize, unwindInfo, infoEntry.HighCq);
bool isAddressUnique = funcs.TryAdd(infoEntry.Address, func);
Debug.Assert(isAddressUnique, $"The address 0x{infoEntry.Address:X16} is not unique.");
}
else
{
infoEntry.Stubbed = true;
UpdateInfo(infoEntry);
StubCode(infoEntry.CodeLen);
StubReloc(infoEntry.RelocEntriesCount);
StubUnwindInfo(unwindInfosReader);
}
}
}
@ -452,6 +483,13 @@ namespace ARMeilleure.Translation.PTC
PtcJumpTable.WriteJumpTable(jumpTable, funcs);
PtcJumpTable.WriteDynamicTable(jumpTable);
Logger.Info?.Print(LogClass.Ptc, $"{funcs.Count} translated functions loaded");
}
private static int GetInfosEntriesCount()
{
return (int)_infosStream.Length / InfoEntry.Stride;
}
private static InfoEntry ReadInfo(BinaryReader infosReader)
@ -461,12 +499,30 @@ namespace ARMeilleure.Translation.PTC
infoEntry.Address = infosReader.ReadUInt64();
infoEntry.GuestSize = infosReader.ReadUInt64();
infoEntry.HighCq = infosReader.ReadBoolean();
infoEntry.Stubbed = infosReader.ReadBoolean();
infoEntry.CodeLen = infosReader.ReadInt32();
infoEntry.RelocEntriesCount = infosReader.ReadInt32();
return infoEntry;
}
private static void SkipCode(int codeLen)
{
_codesStream.Seek(codeLen, SeekOrigin.Current);
}
private static void SkipReloc(int relocEntriesCount)
{
_relocsStream.Seek(relocEntriesCount * RelocEntry.Stride, SeekOrigin.Current);
}
private static void SkipUnwindInfo(BinaryReader unwindInfosReader)
{
int pushEntriesLength = unwindInfosReader.ReadInt32();
_unwindInfosStream.Seek(pushEntriesLength * UnwindPushEntry.Stride + UnwindInfo.Stride, SeekOrigin.Current);
}
private static byte[] ReadCode(BinaryReader codesReader, int codeLen)
{
byte[] codeBuf = new byte[codeLen];
@ -556,50 +612,79 @@ namespace ARMeilleure.Translation.PTC
return tFunc;
}
private static void UpdateInfo(InfoEntry infoEntry)
{
_infosStream.Seek(-InfoEntry.Stride, SeekOrigin.Current);
// WriteInfo.
_infosWriter.Write((ulong)infoEntry.Address);
_infosWriter.Write((ulong)infoEntry.GuestSize);
_infosWriter.Write((bool)infoEntry.HighCq);
_infosWriter.Write((bool)infoEntry.Stubbed);
_infosWriter.Write((int)infoEntry.CodeLen);
_infosWriter.Write((int)infoEntry.RelocEntriesCount);
}
private static void StubCode(int codeLen)
{
for (int i = 0; i < codeLen; i++)
{
_codesStream.WriteByte(FillingByte);
}
}
private static void StubReloc(int relocEntriesCount)
{
for (int i = 0; i < relocEntriesCount * RelocEntry.Stride; i++)
{
_relocsStream.WriteByte(FillingByte);
}
}
private static void StubUnwindInfo(BinaryReader unwindInfosReader)
{
int pushEntriesLength = unwindInfosReader.ReadInt32();
for (int i = 0; i < pushEntriesLength * UnwindPushEntry.Stride + UnwindInfo.Stride; i++)
{
_unwindInfosStream.WriteByte(FillingByte);
}
}
internal static void MakeAndSaveTranslations(ConcurrentDictionary<ulong, TranslatedFunction> funcs, IMemoryManager memory, JumpTable jumpTable)
{
if (PtcProfiler.ProfiledFuncs.Count == 0)
var profiledFuncsToTranslate = PtcProfiler.GetProfiledFuncsToTranslate(funcs);
if (profiledFuncsToTranslate.Count == 0)
{
return;
}
_translateCount = 0;
_rejitCount = 0;
ThreadPool.QueueUserWorkItem(TranslationLogger, (funcs.Count, PtcProfiler.ProfiledFuncs.Count));
ThreadPool.QueueUserWorkItem(TranslationLogger, profiledFuncsToTranslate.Count);
int maxDegreeOfParallelism = (Environment.ProcessorCount * 3) / 4;
Parallel.ForEach(PtcProfiler.ProfiledFuncs, new ParallelOptions { MaxDegreeOfParallelism = maxDegreeOfParallelism }, (item, state) =>
Parallel.ForEach(profiledFuncsToTranslate, new ParallelOptions { MaxDegreeOfParallelism = maxDegreeOfParallelism }, (item, state) =>
{
ulong address = item.Key;
Debug.Assert(PtcProfiler.IsAddressInStaticCodeRange(address));
if (!funcs.ContainsKey(address))
TranslatedFunction func = Translator.Translate(memory, jumpTable, address, item.Value.mode, item.Value.highCq);
bool isAddressUnique = funcs.TryAdd(address, func);
Debug.Assert(isAddressUnique, $"The address 0x{address:X16} is not unique.");
if (func.HighCq)
{
TranslatedFunction func = Translator.Translate(memory, jumpTable, address, item.Value.mode, item.Value.highCq);
funcs.TryAdd(address, func);
if (func.HighCq)
{
jumpTable.RegisterFunction(address, func);
}
Interlocked.Increment(ref _translateCount);
}
else if (item.Value.highCq && !funcs[address].HighCq)
{
TranslatedFunction func = Translator.Translate(memory, jumpTable, address, item.Value.mode, highCq: true);
funcs[address] = func;
jumpTable.RegisterFunction(address, func);
Interlocked.Increment(ref _rejitCount);
}
Interlocked.Increment(ref _translateCount);
if (State != PtcState.Enabled)
{
state.Stop();
@ -608,30 +693,27 @@ namespace ARMeilleure.Translation.PTC
_loggerEvent.Set();
if (_translateCount != 0 || _rejitCount != 0)
{
PtcJumpTable.Initialize(jumpTable);
PtcJumpTable.Initialize(jumpTable);
PtcJumpTable.ReadJumpTable(jumpTable);
PtcJumpTable.ReadDynamicTable(jumpTable);
PtcJumpTable.ReadJumpTable(jumpTable);
PtcJumpTable.ReadDynamicTable(jumpTable);
ThreadPool.QueueUserWorkItem(PreSave);
}
ThreadPool.QueueUserWorkItem(PreSave);
}
private static void TranslationLogger(object state)
{
const int refreshRate = 1; // Seconds.
(int funcsCount, int ProfiledFuncsCount) = ((int, int))state;
int profiledFuncsToTranslateCount = (int)state;
do
{
Logger.Info?.Print(LogClass.Ptc, $"{funcsCount + _translateCount} of {ProfiledFuncsCount} functions to translate - {_rejitCount} functions rejited");
Logger.Info?.Print(LogClass.Ptc, $"{_translateCount} of {profiledFuncsToTranslateCount} functions translated");
}
while (!_loggerEvent.WaitOne(refreshRate * 1000));
Logger.Info?.Print(LogClass.Ptc, $"{funcsCount + _translateCount} of {ProfiledFuncsCount} functions to translate - {_rejitCount} functions rejited");
Logger.Info?.Print(LogClass.Ptc, $"{_translateCount} of {profiledFuncsToTranslateCount} functions translated");
}
internal static void WriteInfoCodeReloc(ulong address, ulong guestSize, bool highCq, PtcInfo ptcInfo)
@ -642,6 +724,7 @@ namespace ARMeilleure.Translation.PTC
_infosWriter.Write((ulong)address); // InfoEntry.Address
_infosWriter.Write((ulong)guestSize); // InfoEntry.GuestSize
_infosWriter.Write((bool)highCq); // InfoEntry.HighCq
_infosWriter.Write((bool)false); // InfoEntry.Stubbed
_infosWriter.Write((int)ptcInfo.CodeStream.Length); // InfoEntry.CodeLen
_infosWriter.Write((int)ptcInfo.RelocEntriesCount); // InfoEntry.RelocEntriesCount
@ -661,12 +744,25 @@ namespace ARMeilleure.Translation.PTC
return (ulong)HardwareCapabilities.FeatureInfoEdx << 32 | (uint)HardwareCapabilities.FeatureInfoEcx;
}
private static uint GetOSPlatform()
{
uint osPlatform = 0u;
osPlatform |= (RuntimeInformation.IsOSPlatform(OSPlatform.FreeBSD) ? 1u : 0u) << 0;
osPlatform |= (RuntimeInformation.IsOSPlatform(OSPlatform.Linux) ? 1u : 0u) << 1;
osPlatform |= (RuntimeInformation.IsOSPlatform(OSPlatform.OSX) ? 1u : 0u) << 2;
osPlatform |= (RuntimeInformation.IsOSPlatform(OSPlatform.Windows) ? 1u : 0u) << 3;
return osPlatform;
}
private struct Header
{
public string Magic;
public int CacheFileVersion;
public uint CacheFileVersion;
public ulong FeatureInfo;
public uint OSPlatform;
public int InfosLen;
public int CodesLen;
@ -676,11 +772,12 @@ namespace ARMeilleure.Translation.PTC
private struct InfoEntry
{
public const int Stride = 25; // Bytes.
public const int Stride = 26; // Bytes.
public ulong Address;
public ulong GuestSize;
public bool HighCq;
public bool Stubbed;
public int CodeLen;
public int RelocEntriesCount;
}

2
ARMeilleure/Translation/PTC/PtcInfo.cs
View file

@ -4,7 +4,7 @@ using System.IO;
namespace ARMeilleure.Translation.PTC
{
sealed class PtcInfo : IDisposable
class PtcInfo : IDisposable
{
private readonly BinaryWriter _relocWriter;
private readonly BinaryWriter _unwindInfoWriter;

281
ARMeilleure/Translation/PTC/PtcJumpTable.cs
View file

@ -2,15 +2,15 @@ using ARMeilleure.Translation.Cache;
using System;
using System.Collections.Concurrent;
using System.Collections.Generic;
using System.Diagnostics;
using System.IO;
using System.Runtime.InteropServices;
namespace ARMeilleure.Translation.PTC
{
[Serializable]
class PtcJumpTable
{
[Serializable]
private struct TableEntry<TAddress>
public struct TableEntry<TAddress>
{
public int EntryIndex;
public long GuestAddress;
@ -24,82 +24,270 @@ namespace ARMeilleure.Translation.PTC
}
}
private enum DirectHostAddress
public enum DirectHostAddress
{
CallStub,
TailCallStub,
Host
CallStub = 0,
TailCallStub = 1,
Host = 2
}
private enum IndirectHostAddress
public enum IndirectHostAddress
{
CallStub,
TailCallStub
CallStub = 0,
TailCallStub = 1
}
private readonly List<TableEntry<DirectHostAddress>> _jumpTable;
private readonly List<TableEntry<IndirectHostAddress>> _dynamicTable;
private readonly List<ulong> _targets;
private readonly Dictionary<ulong, List<int>> _dependants;
private readonly Dictionary<ulong, List<int>> _owners;
public List<ulong> Targets => _targets;
public Dictionary<ulong, List<int>> Dependants => _dependants;
public Dictionary<ulong, List<int>> Owners => _owners;
public List<ulong> Targets { get; }
public Dictionary<ulong, List<int>> Dependants { get; }
public Dictionary<ulong, List<int>> Owners { get; }
public PtcJumpTable()
{
_jumpTable = new List<TableEntry<DirectHostAddress>>();
_dynamicTable = new List<TableEntry<IndirectHostAddress>>();
_targets = new List<ulong>();
_dependants = new Dictionary<ulong, List<int>>();
_owners = new Dictionary<ulong, List<int>>();
Targets = new List<ulong>();
Dependants = new Dictionary<ulong, List<int>>();
Owners = new Dictionary<ulong, List<int>>();
}
public PtcJumpTable(
List<TableEntry<DirectHostAddress>> jumpTable, List<TableEntry<IndirectHostAddress>> dynamicTable,
List<ulong> targets, Dictionary<ulong, List<int>> dependants, Dictionary<ulong, List<int>> owners)
{
_jumpTable = jumpTable;
_dynamicTable = dynamicTable;
Targets = targets;
Dependants = dependants;
Owners = owners;
}
public static PtcJumpTable Deserialize(MemoryStream stream)
{
using (BinaryReader reader = new BinaryReader(stream, EncodingCache.UTF8NoBOM, true))
{
var jumpTable = new List<TableEntry<DirectHostAddress>>();
int jumpTableCount = reader.ReadInt32();
for (int i = 0; i < jumpTableCount; i++)
{
int entryIndex = reader.ReadInt32();
long guestAddress = reader.ReadInt64();
DirectHostAddress hostAddress = (DirectHostAddress)reader.ReadInt32();
jumpTable.Add(new TableEntry<DirectHostAddress>(entryIndex, guestAddress, hostAddress));
}
var dynamicTable = new List<TableEntry<IndirectHostAddress>>();
int dynamicTableCount = reader.ReadInt32();
for (int i = 0; i < dynamicTableCount; i++)
{
int entryIndex = reader.ReadInt32();
long guestAddress = reader.ReadInt64();
IndirectHostAddress hostAddress = (IndirectHostAddress)reader.ReadInt32();
dynamicTable.Add(new TableEntry<IndirectHostAddress>(entryIndex, guestAddress, hostAddress));
}
var targets = new List<ulong>();
int targetsCount = reader.ReadInt32();
for (int i = 0; i < targetsCount; i++)
{
ulong address = reader.ReadUInt64();
targets.Add(address);
}
var dependants = new Dictionary<ulong, List<int>>();
int dependantsCount = reader.ReadInt32();
for (int i = 0; i < dependantsCount; i++)
{
ulong address = reader.ReadUInt64();
var entries = new List<int>();
int entriesCount = reader.ReadInt32();
for (int j = 0; j < entriesCount; j++)
{
int entry = reader.ReadInt32();
entries.Add(entry);
}
dependants.Add(address, entries);
}
var owners = new Dictionary<ulong, List<int>>();
int ownersCount = reader.ReadInt32();
for (int i = 0; i < ownersCount; i++)
{
ulong address = reader.ReadUInt64();
var entries = new List<int>();
int entriesCount = reader.ReadInt32();
for (int j = 0; j < entriesCount; j++)
{
int entry = reader.ReadInt32();
entries.Add(entry);
}
owners.Add(address, entries);
}
return new PtcJumpTable(jumpTable, dynamicTable, targets, dependants, owners);
}
}
public static void Serialize(MemoryStream stream, PtcJumpTable ptcJumpTable)
{
using (BinaryWriter writer = new BinaryWriter(stream, EncodingCache.UTF8NoBOM, true))
{
writer.Write((int)ptcJumpTable._jumpTable.Count);
foreach (var tableEntry in ptcJumpTable._jumpTable)
{
writer.Write((int)tableEntry.EntryIndex);
writer.Write((long)tableEntry.GuestAddress);
writer.Write((int)tableEntry.HostAddress);
}
writer.Write((int)ptcJumpTable._dynamicTable.Count);
foreach (var tableEntry in ptcJumpTable._dynamicTable)
{
writer.Write((int)tableEntry.EntryIndex);
writer.Write((long)tableEntry.GuestAddress);
writer.Write((int)tableEntry.HostAddress);
}
writer.Write((int)ptcJumpTable.Targets.Count);
foreach (ulong address in ptcJumpTable.Targets)
{
writer.Write((ulong)address);
}
writer.Write((int)ptcJumpTable.Dependants.Count);
foreach (var kv in ptcJumpTable.Dependants)
{
writer.Write((ulong)kv.Key); // address
writer.Write((int)kv.Value.Count);
foreach (int entry in kv.Value)
{
writer.Write((int)entry);
}
}
writer.Write((int)ptcJumpTable.Owners.Count);
foreach (var kv in ptcJumpTable.Owners)
{
writer.Write((ulong)kv.Key); // address
writer.Write((int)kv.Value.Count);
foreach (int entry in kv.Value)
{
writer.Write((int)entry);
}
}
}
}
public void Initialize(JumpTable jumpTable)
{
_targets.Clear();
Targets.Clear();
foreach (ulong guestAddress in jumpTable.Targets.Keys)
{
_targets.Add(guestAddress);
Targets.Add(guestAddress);
}
_dependants.Clear();
Dependants.Clear();
foreach (var item in jumpTable.Dependants)
foreach (var kv in jumpTable.Dependants)
{
_dependants.Add(item.Key, new List<int>(item.Value));
Dependants.Add(kv.Key, new List<int>(kv.Value));
}
_owners.Clear();
Owners.Clear();
foreach (var item in jumpTable.Owners)
foreach (var kv in jumpTable.Owners)
{
_owners.Add(item.Key, new List<int>(item.Value));
Owners.Add(kv.Key, new List<int>(kv.Value));
}
}
// For future use.
public void Clean(ulong guestAddress)
{
if (Owners.TryGetValue(guestAddress, out List<int> entries))
{
foreach (int entry in entries)
{
if ((entry & JumpTable.DynamicEntryTag) == 0)
{
int removed = _jumpTable.RemoveAll(tableEntry => tableEntry.EntryIndex == entry);
Debug.Assert(removed == 1);
}
else
{
if (JumpTable.DynamicTableElems > 1)
{
throw new NotSupportedException();
}
int removed = _dynamicTable.RemoveAll(tableEntry => tableEntry.EntryIndex == (entry & ~JumpTable.DynamicEntryTag));
Debug.Assert(removed == 1);
}
}
}
Targets.Remove(guestAddress);
Dependants.Remove(guestAddress);
Owners.Remove(guestAddress);
}
public void Clear()
{
_jumpTable.Clear();
_dynamicTable.Clear();
_targets.Clear();
_dependants.Clear();
_owners.Clear();
Targets.Clear();
Dependants.Clear();
Owners.Clear();
}
public void WriteJumpTable(JumpTable jumpTable, ConcurrentDictionary<ulong, TranslatedFunction> funcs)
{
// Writes internal state to jump table in-memory, after PTC was loaded.
// Writes internal state to jump table in-memory, after PtcJumpTable was deserialized.
foreach (var item in _jumpTable)
foreach (var tableEntry in _jumpTable)
{
long guestAddress = item.GuestAddress;
DirectHostAddress directHostAddress = item.HostAddress;
long guestAddress = tableEntry.GuestAddress;
DirectHostAddress directHostAddress = tableEntry.HostAddress;
long hostAddress;
@ -119,7 +307,12 @@ namespace ARMeilleure.Translation.PTC
}
else
{
throw new KeyNotFoundException($"({nameof(guestAddress)} = 0x{(ulong)guestAddress:X16})");
if (!PtcProfiler.ProfiledFuncs.TryGetValue((ulong)guestAddress, out var value) || !value.highCq)
{
throw new KeyNotFoundException($"({nameof(guestAddress)} = 0x{(ulong)guestAddress:X16})");
}
hostAddress = 0L;
}
}
else
@ -127,7 +320,7 @@ namespace ARMeilleure.Translation.PTC
throw new InvalidOperationException(nameof(directHostAddress));
}
int entry = item.EntryIndex;
int entry = tableEntry.EntryIndex;
jumpTable.Table.SetEntry(entry);
jumpTable.ExpandIfNeededJumpTable(entry);
@ -141,17 +334,17 @@ namespace ARMeilleure.Translation.PTC
public void WriteDynamicTable(JumpTable jumpTable)
{
// Writes internal state to jump table in-memory, after PTC was loaded.
// Writes internal state to jump table in-memory, after PtcJumpTable was deserialized.
if (JumpTable.DynamicTableElems > 1)
{
throw new NotSupportedException();
}
foreach (var item in _dynamicTable)
foreach (var tableEntry in _dynamicTable)
{
long guestAddress = item.GuestAddress;
IndirectHostAddress indirectHostAddress = item.HostAddress;
long guestAddress = tableEntry.GuestAddress;
IndirectHostAddress indirectHostAddress = tableEntry.HostAddress;
long hostAddress;
@ -168,7 +361,7 @@ namespace ARMeilleure.Translation.PTC
throw new InvalidOperationException(nameof(indirectHostAddress));
}
int entry = item.EntryIndex;
int entry = tableEntry.EntryIndex;
jumpTable.DynTable.SetEntry(entry);
jumpTable.ExpandIfNeededDynamicTable(entry);
@ -182,7 +375,7 @@ namespace ARMeilleure.Translation.PTC
public void ReadJumpTable(JumpTable jumpTable)
{
// Reads in-memory jump table state and store internally for PTC serialization.
// Reads in-memory jump table state and store internally for PtcJumpTable serialization.
_jumpTable.Clear();
@ -216,7 +409,7 @@ namespace ARMeilleure.Translation.PTC
public void ReadDynamicTable(JumpTable jumpTable)
{
// Reads in-memory jump table state and store internally for PTC serialization.
// Reads in-memory jump table state and store internally for PtcJumpTable serialization.
if (JumpTable.DynamicTableElems > 1)
{

159
ARMeilleure/Translation/PTC/PtcProfiler.cs
View file

@ -1,10 +1,11 @@
using ARMeilleure.State;
using Ryujinx.Common.Logging;
using System;
using System.Collections.Concurrent;
using System.Collections.Generic;
using System.Diagnostics;
using System.IO;
using System.IO.Compression;
using System.Runtime.Serialization.Formatters.Binary;
using System.Security.Cryptography;
using System.Threading;
@ -12,12 +13,14 @@ namespace ARMeilleure.Translation.PTC
{
public static class PtcProfiler
{
private const string HeaderMagic = "Phd";
private const uint InternalVersion = 1713; //! Not to be incremented manually for each change to the ARMeilleure project.
private const int SaveInterval = 30; // Seconds.
private const CompressionLevel SaveCompressionLevel = CompressionLevel.Fastest;
private static readonly BinaryFormatter _binaryFormatter;
private static readonly System.Timers.Timer _timer;
private static readonly ManualResetEvent _waitEvent;
@ -26,17 +29,15 @@ namespace ARMeilleure.Translation.PTC
private static bool _disposed;
internal static Dictionary<ulong, (ExecutionMode mode, bool highCq)> ProfiledFuncs { get; private set; } //! Not to be modified.
internal static Dictionary<ulong, (ExecutionMode mode, bool highCq)> ProfiledFuncs { get; private set; }
internal static bool Enabled { get; private set; }
public static ulong StaticCodeStart { internal get; set; }
public static int StaticCodeSize { internal get; set; }
public static ulong StaticCodeSize { internal get; set; }
static PtcProfiler()
{
_binaryFormatter = new BinaryFormatter();
_timer = new System.Timers.Timer((double)SaveInterval * 1000d);
_timer.Elapsed += PreSave;
@ -55,11 +56,11 @@ namespace ARMeilleure.Translation.PTC
{
if (IsAddressInStaticCodeRange(address))
{
Debug.Assert(!highCq);
lock (_lock)
{
Debug.Assert(!highCq && !ProfiledFuncs.ContainsKey(address));
ProfiledFuncs.TryAdd(address, (mode, highCq));
ProfiledFuncs.TryAdd(address, (mode, highCq: false));
}
}
}
@ -68,18 +69,35 @@ namespace ARMeilleure.Translation.PTC
{
if (IsAddressInStaticCodeRange(address))
{
Debug.Assert(highCq);
lock (_lock)
{
Debug.Assert(highCq && ProfiledFuncs.ContainsKey(address));
Debug.Assert(ProfiledFuncs.ContainsKey(address));
ProfiledFuncs[address] = (mode, highCq);
ProfiledFuncs[address] = (mode, highCq: true);
}
}
}
internal static bool IsAddressInStaticCodeRange(ulong address)
{
return address >= StaticCodeStart && address < StaticCodeStart + (ulong)StaticCodeSize;
return address >= StaticCodeStart && address < StaticCodeStart + StaticCodeSize;
}
internal static Dictionary<ulong, (ExecutionMode mode, bool highCq)> GetProfiledFuncsToTranslate(ConcurrentDictionary<ulong, TranslatedFunction> funcs)
{
var profiledFuncsToTranslate = new Dictionary<ulong, (ExecutionMode mode, bool highCq)>(ProfiledFuncs);
foreach (ulong address in profiledFuncsToTranslate.Keys)
{
if (funcs.ContainsKey(address))
{
profiledFuncsToTranslate.Remove(address);
}
}
return profiledFuncsToTranslate;
}
internal static void ClearEntries()
@ -97,21 +115,21 @@ namespace ARMeilleure.Translation.PTC
if (fileInfoActual.Exists && fileInfoActual.Length != 0L)
{
if (!Load(fileNameActual))
if (!Load(fileNameActual, false))
{
if (fileInfoBackup.Exists && fileInfoBackup.Length != 0L)
{
Load(fileNameBackup);
Load(fileNameBackup, true);
}
}
}
else if (fileInfoBackup.Exists && fileInfoBackup.Length != 0L)
{
Load(fileNameBackup);
Load(fileNameBackup, true);
}
}
private static bool Load(string fileName)
private static bool Load(string fileName, bool isBackup)
{
using (FileStream compressedStream = new FileStream(fileName, FileMode.Open))
using (DeflateStream deflateStream = new DeflateStream(compressedStream, CompressionMode.Decompress, true))
@ -147,9 +165,25 @@ namespace ARMeilleure.Translation.PTC
stream.Seek((long)hashSize, SeekOrigin.Begin);
Header header = ReadHeader(stream);
if (header.Magic != HeaderMagic)
{
InvalidateCompressedStream(compressedStream);
return false;
}
if (header.InfoFileVersion != InternalVersion)
{
InvalidateCompressedStream(compressedStream);
return false;
}
try
{
ProfiledFuncs = (Dictionary<ulong, (ExecutionMode, bool)>)_binaryFormatter.Deserialize(stream);
ProfiledFuncs = Deserialize(stream);
}
catch
{
@ -159,9 +193,13 @@ namespace ARMeilleure.Translation.PTC
return false;
}
return true;
}
long fileSize = new FileInfo(fileName).Length;
Logger.Info?.Print(LogClass.Ptc, $"{(isBackup ? "Loaded Backup Profiling Info" : "Loaded Profiling Info")} (size: {fileSize} bytes, profiled functions: {ProfiledFuncs.Count}).");
return true;
}
private static bool CompareHash(ReadOnlySpan<byte> currentHash, ReadOnlySpan<byte> expectedHash)
@ -169,6 +207,42 @@ namespace ARMeilleure.Translation.PTC
return currentHash.SequenceEqual(expectedHash);
}
private static Header ReadHeader(MemoryStream stream)
{
using (BinaryReader headerReader = new BinaryReader(stream, EncodingCache.UTF8NoBOM, true))
{
Header header = new Header();
header.Magic = headerReader.ReadString();
header.InfoFileVersion = headerReader.ReadUInt32();
return header;
}
}
private static Dictionary<ulong, (ExecutionMode, bool)> Deserialize(MemoryStream stream)
{
using (BinaryReader reader = new BinaryReader(stream, EncodingCache.UTF8NoBOM, true))
{
var profiledFuncs = new Dictionary<ulong, (ExecutionMode, bool)>();
int profiledFuncsCount = reader.ReadInt32();
for (int i = 0; i < profiledFuncsCount; i++)
{
ulong address = reader.ReadUInt64();
ExecutionMode mode = (ExecutionMode)reader.ReadInt32();
bool highCq = reader.ReadBoolean();
profiledFuncs.Add(address, (mode, highCq));
}
return profiledFuncs;
}
}
private static void InvalidateCompressedStream(FileStream compressedStream)
{
compressedStream.SetLength(0L);
@ -195,6 +269,8 @@ namespace ARMeilleure.Translation.PTC
private static void Save(string fileName)
{
int profiledFuncsCount;
using (MemoryStream stream = new MemoryStream())
using (MD5 md5 = MD5.Create())
{
@ -202,9 +278,13 @@ namespace ARMeilleure.Translation.PTC
stream.Seek((long)hashSize, SeekOrigin.Begin);
WriteHeader(stream);
lock (_lock)
{
_binaryFormatter.Serialize(stream, ProfiledFuncs);
Serialize(stream, ProfiledFuncs);
profiledFuncsCount = ProfiledFuncs.Count;
}
stream.Seek((long)hashSize, SeekOrigin.Begin);
@ -231,6 +311,43 @@ namespace ARMeilleure.Translation.PTC
}
}
}
long fileSize = new FileInfo(fileName).Length;
Logger.Info?.Print(LogClass.Ptc, $"Saved Profiling Info (size: {fileSize} bytes, profiled functions: {profiledFuncsCount}).");
}
private static void WriteHeader(MemoryStream stream)
{
using (BinaryWriter headerWriter = new BinaryWriter(stream, EncodingCache.UTF8NoBOM, true))
{
headerWriter.Write((string)HeaderMagic); // Header.Magic
headerWriter.Write((uint)InternalVersion); // Header.InfoFileVersion
}
}
private static void Serialize(MemoryStream stream, Dictionary<ulong, (ExecutionMode mode, bool highCq)> profiledFuncs)
{
using (BinaryWriter writer = new BinaryWriter(stream, EncodingCache.UTF8NoBOM, true))
{
writer.Write((int)profiledFuncs.Count);
foreach (var kv in profiledFuncs)
{
writer.Write((ulong)kv.Key); // address
writer.Write((int)kv.Value.mode);
writer.Write((bool)kv.Value.highCq);
}
}
}
private struct Header
{
public string Magic;
public uint InfoFileVersion;
}
internal static void Start()

2
ARMeilleure/Translation/PTC/RelocEntry.cs
View file

@ -2,6 +2,8 @@ namespace ARMeilleure.Translation.PTC
{
struct RelocEntry
{
public const int Stride = 8; // Bytes.
public int Position;
public int Index;

1
ARMeilleure/Translation/SsaDeconstruction.cs
View file

@ -1,5 +1,4 @@
using ARMeilleure.IntermediateRepresentation;
using System.Collections.Generic;
using static ARMeilleure.IntermediateRepresentation.OperandHelper;
using static ARMeilleure.IntermediateRepresentation.OperationHelper;

5
ARMeilleure/Translation/Translator.cs
View file

@ -31,10 +31,11 @@ namespace ARMeilleure.Translation
private readonly ReaderWriterLock _backgroundTranslatorLock;
private JumpTable _jumpTable;
internal JumpTable JumpTable => _jumpTable;
private volatile int _threadCount;
// FIXME: Remove this once the init logic of the emulator will be redone
// FIXME: Remove this once the init logic of the emulator will be redone.
public static ManualResetEvent IsReadyForTranslation = new ManualResetEvent(false);
public Translator(IJitMemoryAllocator allocator, IMemoryManager memory)
@ -100,7 +101,7 @@ namespace ARMeilleure.Translation
if (Ptc.State == PtcState.Enabled)
{
Ptc.LoadTranslations(_funcs, _memory.PageTablePointer, _jumpTable);
Ptc.LoadTranslations(_funcs, _memory, _jumpTable);
Ptc.MakeAndSaveTranslations(_funcs, _memory, _jumpTable);
}

2
Ryujinx.HLE/HOS/ProgramLoader.cs
View file

@ -170,7 +170,7 @@ namespace Ryujinx.HLE.HOS
}
PtcProfiler.StaticCodeStart = codeStart;
PtcProfiler.StaticCodeSize = (int)codeSize;
PtcProfiler.StaticCodeSize = (ulong)codeSize;
int codePagesCount = (int)(codeSize / KMemoryManager.PageSize);