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, 14 insertions, 0 deletions

diff --git a/runtime/oat.h b/runtime/oat.h
index 3b32e11daa..e062baaee9 100644
--- a/runtime/oat.h
+++ b/runtime/oat.h
@@ -29,6 +29,18 @@ namespace art {
 enum class InstructionSet;
 class InstructionSetFeatures;
 
+enum class StubType {
+  kJNIDlsymLookupTrampoline,
+  kJNIDlsymLookupCriticalTrampoline,
+  kQuickGenericJNITrampoline,
+  kQuickIMTConflictTrampoline,
+  kQuickResolutionTrampoline,
+  kQuickToInterpreterBridge,
+  kNterpTrampoline,
+  kLast = kNterpTrampoline,
+};
+std::ostream& operator<<(std::ostream& stream, StubType stub_type);
+
 class PACKED(4) OatHeader {
  public:
   static constexpr std::array<uint8_t, 4> kOatMagic { { 'o', 'a', 't', '\n' } };
@@ -111,6 +123,8 @@ class PACKED(4) OatHeader {
   bool IsConcurrentCopying() const;
   bool RequiresImage() const;
 
+  const uint8_t* GetOatAddress(StubType type) const;
+
  private:
   bool KeyHasValue(const char* key, const char* value, size_t value_size) const;