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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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16 changed files with 670 additions and 169 deletions
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65
ARMeilleure/Translation/Cache/JumpTable.cs
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@ -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();