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, 4 insertions, 2 deletions

diff --git a/runtime/image.h b/runtime/image.h
index caf1aa57a2..88cfad0303 100644
--- a/runtime/image.h
+++ b/runtime/image.h
@@ -230,8 +230,10 @@ class PACKED(8) ImageHeader {
     // Aliases.
     kAppImageClassLoader = kSpecialRoots,   // The class loader used to build the app image.
     kBootImageLiveObjects = kSpecialRoots,  // Array of boot image objects that must be kept live.
-    kAppImageDexChecksums = kSpecialRoots,  // Array of dex checksums for app images generated by
-                                            // the runtime.
+    kAppImageContextAndDexChecksums = kSpecialRoots,  // Array of size 2, containing the class
+                                                      // loader context in first entry, and an array
+                                                      // of dex checksums for app images generated
+                                                      // by the runtime.
   };
 
   enum BootImageLiveObjects {