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Add PPTC support

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This commit is contained in:
FICTURE7 2021-04-09 20:55:24 +04:00
parent 1803b9fef9
commit 4478a32114
4 changed files with 44 additions and 33 deletions
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34
ARMeilleure/Translation/PTC/Ptc.cs
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@ -39,6 +39,7 @@ namespace ARMeilleure.Translation.PTC
internal const int PageTablePointerIndex = -1; // Must be a negative value.
internal const int JumpPointerIndex = -2; // Must be a negative value.
internal const int DynamicPointerIndex = -3; // Must be a negative value.
internal const int CountTableIndex = -4; // Must be a negative value.
private const byte FillingByte = 0x00;
private const CompressionLevel SaveCompressionLevel = CompressionLevel.Fastest;
@ -539,7 +540,7 @@ namespace ARMeilleure.Translation.PTC
}
}
internal static void LoadTranslations(ConcurrentDictionary<ulong, TranslatedFunction> funcs, IMemoryManager memory, JumpTable jumpTable)
internal static void LoadTranslations(ConcurrentDictionary<ulong, TranslatedFunction> funcs, IMemoryManager memory, JumpTable jumpTable, EntryTable<byte> countTable)
{
if (AreCarriersEmpty())
{
@ -568,16 +569,23 @@ namespace ARMeilleure.Translation.PTC
{
byte[] code = ReadCode(index, infoEntry.CodeLength);
Counter callCounter = null;
if (infoEntry.RelocEntriesCount != 0)
{
RelocEntry[] relocEntries = GetRelocEntries(relocsReader, infoEntry.RelocEntriesCount);
PatchCode(code.AsSpan(), relocEntries, memory.PageTablePointer, jumpTable);
if (!PatchCode(code, relocEntries, memory.PageTablePointer, jumpTable, countTable, out callCounter))
{
SkipUnwindInfo(unwindInfosReader);
continue;
}
}
UnwindInfo unwindInfo = ReadUnwindInfo(unwindInfosReader);
TranslatedFunction func = FastTranslate(code, infoEntry.GuestSize, unwindInfo, infoEntry.HighCq);
TranslatedFunction func = FastTranslate(code, callCounter, infoEntry.GuestSize, unwindInfo, infoEntry.HighCq);
bool isAddressUnique = funcs.TryAdd(infoEntry.Address, func);
@ -671,8 +679,10 @@ namespace ARMeilleure.Translation.PTC
return relocEntries;
}
private static void PatchCode(Span<byte> code, RelocEntry[] relocEntries, IntPtr pageTablePointer, JumpTable jumpTable)
private static bool PatchCode(Span<byte> code, RelocEntry[] relocEntries, IntPtr pageTablePointer, JumpTable jumpTable, EntryTable<byte> countTable, out Counter callCounter)
{
callCounter = null;
foreach (RelocEntry relocEntry in relocEntries)
{
ulong imm;
@ -689,6 +699,16 @@ namespace ARMeilleure.Translation.PTC
{
imm = (ulong)jumpTable.DynamicPointer.ToInt64();
}
else if (relocEntry.Index == CountTableIndex)
{
// If we could not allocate an entry on the count table we dip.
if (!Counter.TryCreate(countTable, out Counter counter))
{
return false;
}
unsafe { imm = (ulong)Unsafe.AsPointer(ref counter.Value); }
}
else if (Delegates.TryGetDelegateFuncPtrByIndex(relocEntry.Index, out IntPtr funcPtr))
{
imm = (ulong)funcPtr.ToInt64();
@ -700,6 +720,8 @@ namespace ARMeilleure.Translation.PTC
BinaryPrimitives.WriteUInt64LittleEndian(code.Slice(relocEntry.Position, 8), imm);
}
return true;
}
private static UnwindInfo ReadUnwindInfo(BinaryReader unwindInfosReader)
@ -723,7 +745,7 @@ namespace ARMeilleure.Translation.PTC
return new UnwindInfo(pushEntries, prologueSize);
}
private static TranslatedFunction FastTranslate(byte[] code, ulong guestSize, UnwindInfo unwindInfo, bool highCq)
private static TranslatedFunction FastTranslate(byte[] code, Counter callCounter, ulong guestSize, UnwindInfo unwindInfo, bool highCq)
{
CompiledFunction cFunc = new CompiledFunction(code, unwindInfo);
@ -731,7 +753,7 @@ namespace ARMeilleure.Translation.PTC
GuestFunction gFunc = Marshal.GetDelegateForFunctionPointer<GuestFunction>(codePtr);
TranslatedFunction tFunc = new TranslatedFunction(gFunc, guestSize, highCq);
TranslatedFunction tFunc = new TranslatedFunction(gFunc, callCounter, guestSize, highCq);
return tFunc;
}