PPTC Follow-up. (#1712)

* 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.
2020-12-17 20:32:09 +01:00 · 2020-12-17 20:32:09 +01:00 · b5c215111d
commit b5c215111d
parent 10aa11ce13
16 changed files with 670 additions and 169 deletions
--- a/ARMeilleure/Translation/JumpTableEntryAllocator.cs
+++ b/ARMeilleure/Translation/JumpTableEntryAllocator.cs
@ -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;
+        }
+    }
+}