Reland "Write classes in runtime-generated app image."

This reverts commit 24b3d648ff6c2c200003f55ac63fc910d7bfd40f.

Bug: 260557058

Reason for revert:
- Encode class loader context in image, and check it at load time.
- Set nterp entrypoint to methods that can.

Test: test.py
Test: atest com.android.bluetooth.opp.BluetoothOppObexServerSessionTest#onPut_withUnsupportedMimeTypeInHeader_returnsHttpBadRequest

Change-Id: Ibf4a8604c4a226d1acc021103668e211446bb53c

1 files changed, 18 insertions, 0 deletions

diff --git a/runtime/class_table.h b/runtime/class_table.h
index 123c069f0e..7e263737c3 100644
--- a/runtime/class_table.h
+++ b/runtime/class_table.h
@@ -58,18 +58,31 @@ class ClassTable {
     explicit TableSlot(ObjPtr<mirror::Class> klass);
 
     TableSlot(ObjPtr<mirror::Class> klass, uint32_t descriptor_hash);
+    TableSlot(uint32_t ptr, uint32_t descriptor_hash);
 
     TableSlot& operator=(const TableSlot& copy) {
       data_.store(copy.data_.load(std::memory_order_relaxed), std::memory_order_relaxed);
       return *this;
     }
 
+    uint32_t Data() const {
+      return data_.load(std::memory_order_relaxed);
+    }
+
     bool IsNull() const REQUIRES_SHARED(Locks::mutator_lock_);
 
     uint32_t Hash() const {
       return MaskHash(data_.load(std::memory_order_relaxed));
     }
 
+    uint32_t NonHashData() const {
+      return RemoveHash(Data());
+    }
+
+    static uint32_t RemoveHash(uint32_t hash) {
+      return hash & ~kHashMask;
+    }
+
     static uint32_t MaskHash(uint32_t hash) {
       return hash & kHashMask;
     }
@@ -168,6 +181,11 @@ class ClassTable {
       REQUIRES(!lock_)
       REQUIRES_SHARED(Locks::mutator_lock_);
 
+  // Returns the number of classes in the class table.
+  size_t Size() const
+      REQUIRES(!lock_)
+      REQUIRES_SHARED(Locks::mutator_lock_);
+
   // Update a class in the table with the new class. Returns the existing class which was replaced.
   ObjPtr<mirror::Class> UpdateClass(const char* descriptor,
                                     ObjPtr<mirror::Class> new_klass,