Merge "Allow boot image for a part of the boot classpath."
diff --git a/build/Android.common_path.mk b/build/Android.common_path.mk
index 03e68ae..1880726 100644
--- a/build/Android.common_path.mk
+++ b/build/Android.common_path.mk
@@ -73,8 +73,21 @@
 HOST_CORE_IMG_LOCATION := $(HOST_OUT_JAVA_LIBRARIES)/core.art
 TARGET_CORE_IMG_LOCATION := $(ART_TARGET_TEST_OUT)/core.art
 
-# Jar files for core.art.
-TEST_CORE_JARS := core-oj core-libart core-simple conscrypt okhttp bouncycastle
+# Modules to compile for core.art.
+CORE_IMG_JARS := core-oj core-libart core-simple okhttp bouncycastle
+HOST_CORE_IMG_JARS   := $(addsuffix -hostdex,$(CORE_IMG_JARS))
+TARGET_CORE_IMG_JARS := $(addsuffix -testdex,$(CORE_IMG_JARS))
+HOST_CORE_IMG_DEX_LOCATIONS   := $(foreach jar,$(HOST_CORE_IMG_JARS),  $(HOST_OUT_JAVA_LIBRARIES)/$(jar).jar)
+ifeq ($(ART_TEST_ANDROID_ROOT),)
+TARGET_CORE_IMG_DEX_LOCATIONS := $(foreach jar,$(TARGET_CORE_IMG_JARS),/$(DEXPREOPT_BOOT_JAR_DIR)/$(jar).jar)
+else
+TARGET_CORE_IMG_DEX_LOCATIONS := $(foreach jar,$(TARGET_CORE_IMG_JARS),$(ART_TEST_ANDROID_ROOT)/$(jar).jar)
+endif
+HOST_CORE_IMG_DEX_FILES   := $(foreach jar,$(HOST_CORE_IMG_JARS),  $(call intermediates-dir-for,JAVA_LIBRARIES,$(jar),t,COMMON)/javalib.jar)
+TARGET_CORE_IMG_DEX_FILES := $(foreach jar,$(TARGET_CORE_IMG_JARS),$(call intermediates-dir-for,JAVA_LIBRARIES,$(jar), ,COMMON)/javalib.jar)
+
+# Jar files for the boot class path for testing. Must start with CORE_IMG_JARS.
+TEST_CORE_JARS := $(CORE_IMG_JARS) conscrypt
 HOST_TEST_CORE_JARS   := $(addsuffix -hostdex,$(TEST_CORE_JARS))
 TARGET_TEST_CORE_JARS := $(addsuffix -testdex,$(TEST_CORE_JARS))
 HOST_CORE_DEX_LOCATIONS   := $(foreach jar,$(HOST_TEST_CORE_JARS),  $(HOST_OUT_JAVA_LIBRARIES)/$(jar).jar)
@@ -83,7 +96,6 @@
 else
 TARGET_CORE_DEX_LOCATIONS := $(foreach jar,$(TARGET_TEST_CORE_JARS),$(ART_TEST_ANDROID_ROOT)/framework/$(jar).jar)
 endif
-
 HOST_CORE_DEX_FILES   := $(foreach jar,$(HOST_TEST_CORE_JARS),  $(call intermediates-dir-for,JAVA_LIBRARIES,$(jar),t,COMMON)/javalib.jar)
 TARGET_CORE_DEX_FILES := $(foreach jar,$(TARGET_TEST_CORE_JARS),$(call intermediates-dir-for,JAVA_LIBRARIES,$(jar), ,COMMON)/javalib.jar)
 
diff --git a/build/Android.oat.mk b/build/Android.oat.mk
index e2adac1..2ad1143 100644
--- a/build/Android.oat.mk
+++ b/build/Android.oat.mk
@@ -39,8 +39,6 @@
 # Use dex2oat debug version for better error reporting
 # $(1): compiler - optimizing, interpreter or interp-ac (interpreter-access-checks).
 # $(2): 2ND_ or undefined, 2ND_ for 32-bit host builds.
-# NB depending on HOST_CORE_DEX_LOCATIONS so we are sure to have the dex files in frameworks for
-# run-test --no-image
 define create-core-oat-host-rules
   core_compile_options :=
   core_image_name :=
@@ -80,13 +78,15 @@
 $$(core_image_name): PRIVATE_CORE_COMPILE_OPTIONS := $$(core_compile_options)
 $$(core_image_name): PRIVATE_CORE_IMG_NAME := $$(core_image_name)
 $$(core_image_name): PRIVATE_CORE_OAT_NAME := $$(core_oat_name)
-$$(core_image_name): $$(HOST_CORE_DEX_LOCATIONS) $$(core_dex2oat_dependency)
+$$(core_image_name): $$(HOST_CORE_IMG_DEX_LOCATIONS) $$(core_dex2oat_dependency)
 	@echo "host dex2oat: $$@"
 	@mkdir -p $$(dir $$@)
 	$$(hide) ANDROID_LOG_TAGS="*:e" $$(DEX2OAT) --runtime-arg -Xms$(DEX2OAT_IMAGE_XMS) \
 	  --runtime-arg -Xmx$(DEX2OAT_IMAGE_XMX) \
-	  --image-classes=$$(PRELOADED_CLASSES) $$(addprefix --dex-file=,$$(HOST_CORE_DEX_FILES)) \
-	  $$(addprefix --dex-location=,$$(HOST_CORE_DEX_LOCATIONS)) --oat-file=$$(PRIVATE_CORE_OAT_NAME) \
+	  --image-classes=$$(PRELOADED_CLASSES) \
+	  $$(addprefix --dex-file=,$$(HOST_CORE_IMG_DEX_FILES)) \
+	  $$(addprefix --dex-location=,$$(HOST_CORE_IMG_DEX_LOCATIONS)) \
+	  --oat-file=$$(PRIVATE_CORE_OAT_NAME) \
 	  --oat-location=$$(PRIVATE_CORE_OAT_NAME) --image=$$(PRIVATE_CORE_IMG_NAME) \
 	  --base=$$(LIBART_IMG_HOST_BASE_ADDRESS) --instruction-set=$$($(2)ART_HOST_ARCH) \
 	  $$(LOCAL_$(2)DEX2OAT_HOST_INSTRUCTION_SET_FEATURES_OPTION) \
@@ -169,13 +169,15 @@
 $$(core_image_name): PRIVATE_CORE_COMPILE_OPTIONS := $$(core_compile_options)
 $$(core_image_name): PRIVATE_CORE_IMG_NAME := $$(core_image_name)
 $$(core_image_name): PRIVATE_CORE_OAT_NAME := $$(core_oat_name)
-$$(core_image_name): $$(TARGET_CORE_DEX_FILES) $$(core_dex2oat_dependency)
+$$(core_image_name): $$(TARGET_CORE_IMG_DEX_FILES) $$(core_dex2oat_dependency)
 	@echo "target dex2oat: $$@"
 	@mkdir -p $$(dir $$@)
 	$$(hide) $$(DEX2OAT) --runtime-arg -Xms$(DEX2OAT_IMAGE_XMS) \
 	  --runtime-arg -Xmx$(DEX2OAT_IMAGE_XMX) \
-	  --image-classes=$$(PRELOADED_CLASSES) $$(addprefix --dex-file=,$$(TARGET_CORE_DEX_FILES)) \
-	  $$(addprefix --dex-location=,$$(TARGET_CORE_DEX_LOCATIONS)) --oat-file=$$(PRIVATE_CORE_OAT_NAME) \
+	  --image-classes=$$(PRELOADED_CLASSES) \
+	  $$(addprefix --dex-file=,$$(TARGET_CORE_IMG_DEX_FILES)) \
+	  $$(addprefix --dex-location=,$$(TARGET_CORE_IMG_DEX_LOCATIONS)) \
+	  --oat-file=$$(PRIVATE_CORE_OAT_NAME) \
 	  --oat-location=$$(PRIVATE_CORE_OAT_NAME) --image=$$(PRIVATE_CORE_IMG_NAME) \
 	  --base=$$(LIBART_IMG_TARGET_BASE_ADDRESS) --instruction-set=$$($(2)TARGET_ARCH) \
 	  --instruction-set-variant=$$($(2)DEX2OAT_TARGET_CPU_VARIANT) \
diff --git a/dex2oat/dex2oat.cc b/dex2oat/dex2oat.cc
index a5bba9b..872fab3 100644
--- a/dex2oat/dex2oat.cc
+++ b/dex2oat/dex2oat.cc
@@ -624,7 +624,6 @@
   explicit Dex2Oat(TimingLogger* timings) :
       compiler_kind_(Compiler::kOptimizing),
       // Take the default set of instruction features from the build.
-      boot_image_checksum_(0),
       key_value_store_(nullptr),
       verification_results_(nullptr),
       runtime_(nullptr),
@@ -1437,17 +1436,22 @@
 
     if (!IsBootImage()) {
       // When compiling an app, create the runtime early to retrieve
-      // the image location key needed for the oat header.
+      // the boot image checksums needed for the oat header.
       if (!CreateRuntime(std::move(runtime_options))) {
         return dex2oat::ReturnCode::kCreateRuntime;
       }
 
       if (CompilerFilter::DependsOnImageChecksum(compiler_options_->GetCompilerFilter())) {
         TimingLogger::ScopedTiming t3("Loading image checksum", timings_);
-        std::vector<ImageSpace*> image_spaces = Runtime::Current()->GetHeap()->GetBootImageSpaces();
-        boot_image_checksum_ = image_spaces[0]->GetImageHeader().GetImageChecksum();
-      } else {
-        boot_image_checksum_ = 0u;
+        Runtime* runtime = Runtime::Current();
+        key_value_store_->Put(OatHeader::kBootClassPathKey,
+                              android::base::Join(runtime->GetBootClassPathLocations(), ':'));
+        std::vector<ImageSpace*> image_spaces = runtime->GetHeap()->GetBootImageSpaces();
+        const std::vector<const DexFile*>& bcp_dex_files =
+            runtime->GetClassLinker()->GetBootClassPath();
+        key_value_store_->Put(
+            OatHeader::kBootClassPathChecksumsKey,
+            gc::space::ImageSpace::GetBootClassPathChecksums(image_spaces, bcp_dex_files));
       }
 
       // Open dex files for class path.
@@ -2015,7 +2019,7 @@
           elf_writer->EndDataBimgRelRo(data_bimg_rel_ro);
         }
 
-        if (!oat_writer->WriteHeader(elf_writer->GetStream(), boot_image_checksum_)) {
+        if (!oat_writer->WriteHeader(elf_writer->GetStream())) {
           LOG(ERROR) << "Failed to write oat header to the ELF file " << oat_file->GetPath();
           return false;
         }
@@ -2646,7 +2650,6 @@
   std::unique_ptr<CompilerOptions> compiler_options_;
   Compiler::Kind compiler_kind_;
 
-  uint32_t boot_image_checksum_;
   std::unique_ptr<SafeMap<std::string, std::string> > key_value_store_;
 
   std::unique_ptr<VerificationResults> verification_results_;
diff --git a/dex2oat/linker/image_test.h b/dex2oat/linker/image_test.h
index bd8cf5a..fa0a3d4 100644
--- a/dex2oat/linker/image_test.h
+++ b/dex2oat/linker/image_test.h
@@ -326,8 +326,7 @@
           elf_writer->EndDataBimgRelRo(data_bimg_rel_ro);
         }
 
-        bool header_ok = oat_writer->WriteHeader(elf_writer->GetStream(),
-                                                 /*boot_image_checksum=*/ 0u);
+        bool header_ok = oat_writer->WriteHeader(elf_writer->GetStream());
         ASSERT_TRUE(header_ok);
 
         writer->UpdateOatFileHeader(i, oat_writer->GetOatHeader());
diff --git a/dex2oat/linker/image_writer.cc b/dex2oat/linker/image_writer.cc
index 61d105f..e4e4b13 100644
--- a/dex2oat/linker/image_writer.cc
+++ b/dex2oat/linker/image_writer.cc
@@ -32,6 +32,7 @@
 #include "base/enums.h"
 #include "base/globals.h"
 #include "base/logging.h"  // For VLOG.
+#include "base/stl_util.h"
 #include "base/unix_file/fd_file.h"
 #include "class_linker-inl.h"
 #include "class_root.h"
@@ -153,6 +154,26 @@
       : nullptr;
 }
 
+bool ImageWriter::IsImageObject(ObjPtr<mirror::Object> obj) const {
+  // For boot image, we keep all objects remaining after the GC in PrepareImageAddressSpace().
+  if (compiler_options_.IsBootImage()) {
+    return true;
+  }
+  // Objects already in the boot image do not belong to the image being written.
+  if (IsInBootImage(obj.Ptr())) {
+    return false;
+  }
+  // DexCaches for the boot class path components that are not a part of the boot image
+  // cannot be garbage collected in PrepareImageAddressSpace() but we do not want to
+  // include them in the app image. So make sure we include only the app DexCaches.
+  if (obj->IsDexCache() &&
+      !ContainsElement(compiler_options_.GetDexFilesForOatFile(),
+                       obj->AsDexCache()->GetDexFile())) {
+    return false;
+  }
+  return true;
+}
+
 // Return true if an object is already in an image space.
 bool ImageWriter::IsInBootImage(const void* obj) const {
   gc::Heap* const heap = Runtime::Current()->GetHeap();
@@ -437,7 +458,7 @@
    */
   heap->VisitObjects([this, &visitor](ObjPtr<mirror::Object> object)
       REQUIRES_SHARED(Locks::mutator_lock_) {
-    if (!IsInBootImage(object.Ptr())) {
+    if (IsImageObject(object)) {
       visitor.SetObject(object);
 
       if (object->IsDexCache()) {
@@ -680,7 +701,7 @@
     ObjPtr<mirror::ClassLoader> class_loader = GetAppClassLoader();
     std::vector<ObjPtr<mirror::DexCache>> dex_caches = FindDexCaches(self);
     for (ObjPtr<mirror::DexCache> dex_cache : dex_caches) {
-      if (IsInBootImage(dex_cache.Ptr())) {
+      if (!IsImageObject(dex_cache)) {
         continue;  // Boot image DexCache is not written to the app image.
       }
       PreloadDexCache(dex_cache, class_loader);
@@ -989,7 +1010,7 @@
   for (const ClassLinker::DexCacheData& data : class_linker->GetDexCachesData()) {
     ObjPtr<mirror::DexCache> dex_cache =
         ObjPtr<mirror::DexCache>::DownCast(self->DecodeJObject(data.weak_root));
-    if (dex_cache == nullptr || IsInBootImage(dex_cache.Ptr())) {
+    if (dex_cache == nullptr || !IsImageObject(dex_cache)) {
       continue;
     }
     const DexFile* dex_file = dex_cache->GetDexFile();
@@ -1758,7 +1779,8 @@
   for (ObjPtr<mirror::DexCache> dex_cache : dex_caches) {
     // Pass the class loader associated with the DexCache. This can either be
     // the app's `class_loader` or `nullptr` if boot class loader.
-    PruneDexCache(dex_cache, IsInBootImage(dex_cache.Ptr()) ? nullptr : GetAppClassLoader());
+    bool is_app_image_dex_cache = compiler_options_.IsAppImage() && IsImageObject(dex_cache);
+    PruneDexCache(dex_cache, is_app_image_dex_cache ? GetAppClassLoader() : nullptr);
   }
 
   // Drop the array class cache in the ClassLinker, as these are roots holding those classes live.
@@ -1856,7 +1878,7 @@
         continue;
       }
       const DexFile* dex_file = dex_cache->GetDexFile();
-      if (!IsInBootImage(dex_cache.Ptr())) {
+      if (IsImageObject(dex_cache)) {
         dex_cache_count += image_dex_files.find(dex_file) != image_dex_files.end() ? 1u : 0u;
       }
     }
@@ -1875,7 +1897,7 @@
         continue;
       }
       const DexFile* dex_file = dex_cache->GetDexFile();
-      if (!IsInBootImage(dex_cache.Ptr())) {
+      if (IsImageObject(dex_cache)) {
         non_image_dex_caches += image_dex_files.find(dex_file) != image_dex_files.end() ? 1u : 0u;
       }
     }
@@ -1889,7 +1911,7 @@
         continue;
       }
       const DexFile* dex_file = dex_cache->GetDexFile();
-      if (!IsInBootImage(dex_cache.Ptr()) &&
+      if (IsImageObject(dex_cache) &&
           image_dex_files.find(dex_file) != image_dex_files.end()) {
         dex_caches->Set<false>(i, dex_cache.Ptr());
         ++i;
@@ -1942,7 +1964,7 @@
 mirror::Object* ImageWriter::TryAssignBinSlot(WorkStack& work_stack,
                                               mirror::Object* obj,
                                               size_t oat_index) {
-  if (obj == nullptr || IsInBootImage(obj)) {
+  if (obj == nullptr || !IsImageObject(obj)) {
     // Object is null or already in the image, there is no work to do.
     return obj;
   }
@@ -2373,7 +2395,7 @@
   {
     auto ensure_bin_slots_assigned = [&](mirror::Object* obj)
         REQUIRES_SHARED(Locks::mutator_lock_) {
-      if (!Runtime::Current()->GetHeap()->ObjectIsInBootImageSpace(obj)) {
+      if (IsImageObject(obj)) {
         CHECK(IsImageBinSlotAssigned(obj)) << mirror::Object::PrettyTypeOf(obj) << " " << obj;
       }
     };
@@ -2444,7 +2466,7 @@
   {
     auto unbin_objects_into_offset = [&](mirror::Object* obj)
         REQUIRES_SHARED(Locks::mutator_lock_) {
-      if (!IsInBootImage(obj)) {
+      if (IsImageObject(obj)) {
         UnbinObjectsIntoOffset(obj);
       }
     };
@@ -2909,7 +2931,7 @@
 }
 
 void ImageWriter::CopyAndFixupObject(Object* obj) {
-  if (IsInBootImage(obj)) {
+  if (!IsImageObject(obj)) {
     return;
   }
   size_t offset = GetImageOffset(obj);
diff --git a/dex2oat/linker/image_writer.h b/dex2oat/linker/image_writer.h
index 33bacf8..b680265 100644
--- a/dex2oat/linker/image_writer.h
+++ b/dex2oat/linker/image_writer.h
@@ -674,7 +674,12 @@
   template <typename T>
   T* NativeCopyLocation(T* obj) REQUIRES_SHARED(Locks::mutator_lock_);
 
-  // Return true of obj is inside of the boot image space. This may only return true if we are
+  // Return true if `obj` belongs to the image we're writing.
+  // For a boot image, this is true for all objects.
+  // For an app image, boot image objects and boot class path dex caches are excluded.
+  bool IsImageObject(ObjPtr<mirror::Object> obj) const REQUIRES_SHARED(Locks::mutator_lock_);
+
+  // Return true if `obj` is inside of the boot image space. This may only return true if we are
   // compiling an app image.
   bool IsInBootImage(const void* obj) const;
 
diff --git a/dex2oat/linker/oat_writer.cc b/dex2oat/linker/oat_writer.cc
index d045698..e2a9ac2 100644
--- a/dex2oat/linker/oat_writer.cc
+++ b/dex2oat/linker/oat_writer.cc
@@ -2808,11 +2808,9 @@
   return true;
 }
 
-bool OatWriter::WriteHeader(OutputStream* out, uint32_t boot_image_checksum) {
+bool OatWriter::WriteHeader(OutputStream* out) {
   CHECK(write_state_ == WriteState::kWriteHeader);
 
-  oat_header_->SetBootImageChecksum(boot_image_checksum);
-
   // Update checksum with header data.
   DCHECK_EQ(oat_header_->GetChecksum(), 0u);  // For checksum calculation.
   const uint8_t* header_begin = reinterpret_cast<const uint8_t*>(oat_header_.get());
diff --git a/dex2oat/linker/oat_writer.h b/dex2oat/linker/oat_writer.h
index 9cd2fd0..cc0e83a 100644
--- a/dex2oat/linker/oat_writer.h
+++ b/dex2oat/linker/oat_writer.h
@@ -198,7 +198,7 @@
   // Check the size of the written oat file.
   bool CheckOatSize(OutputStream* out, size_t file_offset, size_t relative_offset);
   // Write the oat header. This finalizes the oat file.
-  bool WriteHeader(OutputStream* out, uint32_t boot_image_checksum);
+  bool WriteHeader(OutputStream* out);
 
   // Returns whether the oat file has an associated image.
   bool HasImage() const {
diff --git a/dex2oat/linker/oat_writer_test.cc b/dex2oat/linker/oat_writer_test.cc
index 5de1540..ecf9db8 100644
--- a/dex2oat/linker/oat_writer_test.cc
+++ b/dex2oat/linker/oat_writer_test.cc
@@ -240,7 +240,7 @@
       elf_writer->EndDataBimgRelRo(data_bimg_rel_ro);
     }
 
-    if (!oat_writer.WriteHeader(elf_writer->GetStream(), /*boot_image_checksum=*/ 42u)) {
+    if (!oat_writer.WriteHeader(elf_writer->GetStream())) {
       return false;
     }
 
@@ -396,6 +396,7 @@
 
   ScratchFile tmp_base, tmp_oat(tmp_base, ".oat"), tmp_vdex(tmp_base, ".vdex");
   SafeMap<std::string, std::string> key_value_store;
+  key_value_store.Put(OatHeader::kBootClassPathChecksumsKey, "testkey");
   bool success = WriteElf(tmp_vdex.GetFile(),
                           tmp_oat.GetFile(),
                           class_linker->GetBootClassPath(),
@@ -418,7 +419,8 @@
   const OatHeader& oat_header = oat_file->GetOatHeader();
   ASSERT_TRUE(oat_header.IsValid());
   ASSERT_EQ(class_linker->GetBootClassPath().size(), oat_header.GetDexFileCount());  // core
-  ASSERT_EQ(42u, oat_header.GetBootImageChecksum());
+  ASSERT_TRUE(oat_header.GetStoreValueByKey(OatHeader::kBootClassPathChecksumsKey) != nullptr);
+  ASSERT_STREQ("testkey", oat_header.GetStoreValueByKey(OatHeader::kBootClassPathChecksumsKey));
 
   ASSERT_TRUE(java_lang_dex_file_ != nullptr);
   const DexFile& dex_file = *java_lang_dex_file_;
@@ -464,7 +466,7 @@
 TEST_F(OatTest, OatHeaderSizeCheck) {
   // If this test is failing and you have to update these constants,
   // it is time to update OatHeader::kOatVersion
-  EXPECT_EQ(68U, sizeof(OatHeader));
+  EXPECT_EQ(64U, sizeof(OatHeader));
   EXPECT_EQ(4U, sizeof(OatMethodOffsets));
   EXPECT_EQ(8U, sizeof(OatQuickMethodHeader));
   EXPECT_EQ(166 * static_cast<size_t>(GetInstructionSetPointerSize(kRuntimeISA)),
diff --git a/libartbase/base/common_art_test.cc b/libartbase/base/common_art_test.cc
index 278203d..4e38490 100644
--- a/libartbase/base/common_art_test.cc
+++ b/libartbase/base/common_art_test.cc
@@ -329,15 +329,18 @@
 }
 
 std::vector<std::string> CommonArtTestImpl::GetLibCoreDexFileNames() {
-  // Note: This must match the TEST_CORE_JARS in Android.common_path.mk
+  // Note: This must start with the CORE_IMG_JARS in Android.common_path.mk
   // because that's what we use for compiling the core.art image.
+  // It may contain additional modules from TEST_CORE_JARS.
   static const char* const kLibcoreModules[] = {
+      // CORE_IMG_JARS modules.
       "core-oj",
       "core-libart",
       "core-simple",
-      "conscrypt",
       "okhttp",
       "bouncycastle",
+      // Additional modules.
+      "conscrypt",
   };
 
   std::vector<std::string> result;
diff --git a/oatdump/oatdump.cc b/oatdump/oatdump.cc
index 1c74a92..d2a5bb8 100644
--- a/oatdump/oatdump.cc
+++ b/oatdump/oatdump.cc
@@ -473,9 +473,6 @@
                            GetQuickToInterpreterBridgeOffset);
 #undef DUMP_OAT_HEADER_OFFSET
 
-    os << "BOOT IMAGE CHECKSUM:\n";
-    os << StringPrintf("0x%08x\n\n", oat_header.GetBootImageChecksum());
-
     // Print the key-value store.
     {
       os << "KEY VALUE STORE:\n";
diff --git a/runtime/class_linker.cc b/runtime/class_linker.cc
index d33541c..f6a3e32 100644
--- a/runtime/class_linker.cc
+++ b/runtime/class_linker.cc
@@ -1037,20 +1037,15 @@
   runtime->SetSentinel(heap->AllocNonMovableObject<true>(
       self, java_lang_Object, java_lang_Object->GetObjectSize(), VoidFunctor()));
 
-  const std::vector<std::string>& boot_class_path = runtime->GetBootClassPath();
-  if (boot_class_path.size() != spaces.size()) {
-    *error_msg = StringPrintf("Boot class path has %zu components but there are %zu image spaces.",
-                              boot_class_path.size(),
-                              spaces.size());
-    return false;
-  }
+  const std::vector<std::string>& boot_class_path_locations = runtime->GetBootClassPathLocations();
+  CHECK_LE(spaces.size(), boot_class_path_locations.size());
   for (size_t i = 0u, size = spaces.size(); i != size; ++i) {
     // Boot class loader, use a null handle.
     std::vector<std::unique_ptr<const DexFile>> dex_files;
     if (!AddImageSpace(spaces[i],
                        ScopedNullHandle<mirror::ClassLoader>(),
                        /*dex_elements=*/ nullptr,
-                       /*dex_location=*/ boot_class_path[i].c_str(),
+                       /*dex_location=*/ boot_class_path_locations[i].c_str(),
                        /*out*/&dex_files,
                        error_msg)) {
       return false;
@@ -1069,6 +1064,15 @@
   return true;
 }
 
+void ClassLinker::AddExtraBootDexFiles(
+    Thread* self,
+    std::vector<std::unique_ptr<const DexFile>>&& additional_dex_files) {
+  for (std::unique_ptr<const DexFile>& dex_file : additional_dex_files) {
+    AppendToBootClassPath(self, *dex_file);
+    boot_dex_files_.push_back(std::move(dex_file));
+  }
+}
+
 bool ClassLinker::IsBootClassLoader(ScopedObjectAccessAlreadyRunnable& soa,
                                     ObjPtr<mirror::ClassLoader> class_loader) {
   return class_loader == nullptr ||
diff --git a/runtime/class_linker.h b/runtime/class_linker.h
index d3eab7c..d0a7c9b 100644
--- a/runtime/class_linker.h
+++ b/runtime/class_linker.h
@@ -127,6 +127,12 @@
       REQUIRES_SHARED(Locks::mutator_lock_)
       REQUIRES(!Locks::dex_lock_);
 
+  // Add boot class path dex files that were not included in the boot image.
+  // ClassLinker takes ownership of these dex files.
+  void AddExtraBootDexFiles(Thread* self,
+                            std::vector<std::unique_ptr<const DexFile>>&& additional_dex_files)
+      REQUIRES_SHARED(Locks::mutator_lock_);
+
   // Add an image space to the class linker, may fix up classloader fields and dex cache fields.
   // The dex files that were newly opened for the space are placed in the out argument
   // out_dex_files. Returns true if the operation succeeded.
diff --git a/runtime/dexopt_test.cc b/runtime/dexopt_test.cc
index b46c933..7f697d1 100644
--- a/runtime/dexopt_test.cc
+++ b/runtime/dexopt_test.cc
@@ -116,19 +116,19 @@
   ASSERT_TRUE(odex_file.get() != nullptr) << error_msg;
   EXPECT_EQ(filter, odex_file->GetCompilerFilter());
 
-  std::unique_ptr<ImageHeader> image_header(
-          gc::space::ImageSpace::ReadImageHeader(image_location.c_str(),
-                                                 kRuntimeISA,
-                                                 &error_msg));
-  ASSERT_TRUE(image_header != nullptr) << error_msg;
+  std::string boot_image_checksums = gc::space::ImageSpace::GetBootClassPathChecksums(
+      Runtime::Current()->GetBootClassPath(), image_location, kRuntimeISA, &error_msg);
+  ASSERT_FALSE(boot_image_checksums.empty()) << error_msg;
+
   const OatHeader& oat_header = odex_file->GetOatHeader();
-  uint32_t boot_image_checksum = image_header->GetImageChecksum();
 
   if (CompilerFilter::DependsOnImageChecksum(filter)) {
+    const char* checksums = oat_header.GetStoreValueByKey(OatHeader::kBootClassPathChecksumsKey);
+    ASSERT_TRUE(checksums != nullptr);
     if (with_alternate_image) {
-      EXPECT_NE(boot_image_checksum, oat_header.GetBootImageChecksum());
+      EXPECT_NE(boot_image_checksums, checksums);
     } else {
-      EXPECT_EQ(boot_image_checksum, oat_header.GetBootImageChecksum());
+      EXPECT_EQ(boot_image_checksums, checksums);
     }
   }
 }
diff --git a/runtime/gc/space/image_space.cc b/runtime/gc/space/image_space.cc
index 5045888..3f1d879 100644
--- a/runtime/gc/space/image_space.cc
+++ b/runtime/gc/space/image_space.cc
@@ -28,6 +28,7 @@
 
 #include "art_field-inl.h"
 #include "art_method-inl.h"
+#include "base/array_ref.h"
 #include "base/bit_memory_region.h"
 #include "base/callee_save_type.h"
 #include "base/enums.h"
@@ -59,6 +60,7 @@
 namespace gc {
 namespace space {
 
+using android::base::StringAppendF;
 using android::base::StringPrintf;
 
 Atomic<uint32_t> ImageSpace::bitmap_index_(0);
@@ -1544,8 +1546,10 @@
       *error_msg = StringPrintf("Cannot read header of %s", filename.c_str());
       return false;
     }
-    if (system_hdr.GetComponentCount() != boot_class_path_.size()) {
-      *error_msg = StringPrintf("Unexpected component count in %s, received %u, expected %zu",
+    if (system_hdr.GetComponentCount() == 0u ||
+        system_hdr.GetComponentCount() > boot_class_path_.size()) {
+      *error_msg = StringPrintf("Unexpected component count in %s, received %u, "
+                                    "expected non-zero and <= %zu",
                                 filename.c_str(),
                                 system_hdr.GetComponentCount(),
                                 boot_class_path_.size());
@@ -1562,10 +1566,12 @@
       return false;
     }
 
+    ArrayRef<const std::string> provided_locations(boot_class_path_locations_.data(),
+                                                   system_hdr.GetComponentCount());
     std::vector<std::string> locations =
-        ExpandMultiImageLocations(boot_class_path_locations_, image_location_);
+        ExpandMultiImageLocations(provided_locations, image_location_);
     std::vector<std::string> filenames =
-        ExpandMultiImageLocations(boot_class_path_locations_, filename);
+        ExpandMultiImageLocations(provided_locations, filename);
     DCHECK_EQ(locations.size(), filenames.size());
     std::vector<std::unique_ptr<ImageSpace>> spaces;
     spaces.reserve(locations.size());
@@ -1584,7 +1590,7 @@
     }
     for (size_t i = 0u, size = spaces.size(); i != size; ++i) {
       std::string expected_boot_class_path =
-          (i == 0u) ? android::base::Join(boot_class_path_locations_, ':') : std::string();
+          (i == 0u) ? android::base::Join(provided_locations, ':') : std::string();
       if (!OpenOatFile(spaces[i].get(),
                        boot_class_path_[i],
                        expected_boot_class_path,
@@ -2318,9 +2324,113 @@
   return true;
 }
 
+std::string ImageSpace::GetBootClassPathChecksums(const std::vector<std::string>& boot_class_path,
+                                                  const std::string& image_location,
+                                                  InstructionSet image_isa,
+                                                  /*out*/std::string* error_msg) {
+  std::string system_filename;
+  bool has_system = false;
+  std::string cache_filename;
+  bool has_cache = false;
+  bool dalvik_cache_exists = false;
+  bool is_global_cache = false;
+  if (!FindImageFilename(image_location.c_str(),
+                         image_isa,
+                         &system_filename,
+                         &has_system,
+                         &cache_filename,
+                         &dalvik_cache_exists,
+                         &has_cache,
+                         &is_global_cache)) {
+    *error_msg = StringPrintf("Unable to find image file for %s and %s",
+                              image_location.c_str(),
+                              GetInstructionSetString(image_isa));
+    return std::string();
+  }
+
+  DCHECK(has_system || has_cache);
+  const std::string& filename = has_system ? system_filename : cache_filename;
+  std::unique_ptr<ImageHeader> header = ReadSpecificImageHeader(filename.c_str(), error_msg);
+  if (header == nullptr) {
+    return std::string();
+  }
+  if (header->GetComponentCount() == 0u || header->GetComponentCount() > boot_class_path.size()) {
+    *error_msg = StringPrintf("Unexpected component count in %s, received %u, "
+                                  "expected non-zero and <= %zu",
+                              filename.c_str(),
+                              header->GetComponentCount(),
+                              boot_class_path.size());
+    return std::string();
+  }
+
+  std::string boot_image_checksum =
+      StringPrintf("i;%d/%08x", header->GetComponentCount(), header->GetImageChecksum());
+  ArrayRef<const std::string> boot_class_path_tail =
+      ArrayRef<const std::string>(boot_class_path).SubArray(header->GetComponentCount());
+  for (const std::string& bcp_filename : boot_class_path_tail) {
+    std::vector<std::unique_ptr<const DexFile>> dex_files;
+    const ArtDexFileLoader dex_file_loader;
+    if (!dex_file_loader.Open(bcp_filename.c_str(),
+                              bcp_filename,  // The location does not matter here.
+                              /*verify=*/ false,
+                              /*verify_checksum=*/ false,
+                              error_msg,
+                              &dex_files)) {
+      return std::string();
+    }
+    DCHECK(!dex_files.empty());
+    StringAppendF(&boot_image_checksum, ":d");
+    for (const std::unique_ptr<const DexFile>& dex_file : dex_files) {
+      StringAppendF(&boot_image_checksum, "/%08x", dex_file->GetLocationChecksum());
+    }
+  }
+  return boot_image_checksum;
+}
+
+std::string ImageSpace::GetBootClassPathChecksums(
+    const std::vector<ImageSpace*>& image_spaces,
+    const std::vector<const DexFile*>& boot_class_path) {
+  DCHECK(!image_spaces.empty());
+  const ImageHeader& primary_header = image_spaces.front()->GetImageHeader();
+  uint32_t component_count = primary_header.GetComponentCount();
+  DCHECK_EQ(component_count, image_spaces.size());
+  std::string boot_image_checksum =
+      StringPrintf("i;%d/%08x", component_count, primary_header.GetImageChecksum());
+  size_t pos = 0u;
+  for (const ImageSpace* space : image_spaces) {
+    size_t num_dex_files = space->oat_file_non_owned_->GetOatDexFiles().size();
+    if (kIsDebugBuild) {
+      CHECK_NE(num_dex_files, 0u);
+      CHECK_LE(space->oat_file_non_owned_->GetOatDexFiles().size(), boot_class_path.size() - pos);
+      for (size_t i = 0; i != num_dex_files; ++i) {
+        CHECK_EQ(space->oat_file_non_owned_->GetOatDexFiles()[i]->GetDexFileLocation(),
+                 boot_class_path[pos + i]->GetLocation());
+      }
+    }
+    pos += num_dex_files;
+  }
+  ArrayRef<const DexFile* const> boot_class_path_tail =
+      ArrayRef<const DexFile* const>(boot_class_path).SubArray(pos);
+  DCHECK(boot_class_path_tail.empty() ||
+         !DexFileLoader::IsMultiDexLocation(boot_class_path_tail.front()->GetLocation().c_str()));
+  for (const DexFile* dex_file : boot_class_path_tail) {
+    if (!DexFileLoader::IsMultiDexLocation(dex_file->GetLocation().c_str())) {
+      StringAppendF(&boot_image_checksum, ":d");
+    }
+    StringAppendF(&boot_image_checksum, "/%08x", dex_file->GetLocationChecksum());
+  }
+  return boot_image_checksum;
+}
+
 std::vector<std::string> ImageSpace::ExpandMultiImageLocations(
     const std::vector<std::string>& dex_locations,
     const std::string& image_location) {
+  return ExpandMultiImageLocations(ArrayRef<const std::string>(dex_locations), image_location);
+}
+
+std::vector<std::string> ImageSpace::ExpandMultiImageLocations(
+    ArrayRef<const std::string> dex_locations,
+    const std::string& image_location) {
   DCHECK(!dex_locations.empty());
 
   // Find the path.
diff --git a/runtime/gc/space/image_space.h b/runtime/gc/space/image_space.h
index 9049a53..14e364a 100644
--- a/runtime/gc/space/image_space.h
+++ b/runtime/gc/space/image_space.h
@@ -24,6 +24,8 @@
 
 namespace art {
 
+template <typename T> class ArrayRef;
+class DexFile;
 class OatFile;
 
 namespace gc {
@@ -124,6 +126,19 @@
                                 bool* has_data,
                                 bool *is_global_cache);
 
+  // Returns the checksums for the boot image and extra boot class path dex files,
+  // based on the boot class path, image location and ISA (may differ from the ISA of an
+  // initialized Runtime). The boot image and dex files do not need to be loaded in memory.
+  static std::string GetBootClassPathChecksums(const std::vector<std::string>& boot_class_path,
+                                               const std::string& image_location,
+                                               InstructionSet image_isa,
+                                               /*out*/std::string* error_msg);
+
+  // Returns the checksums for the boot image and extra boot class path dex files,
+  // based on the boot image and boot class path dex files loaded in memory.
+  static std::string GetBootClassPathChecksums(const std::vector<ImageSpace*>& image_spaces,
+                                               const std::vector<const DexFile*>& boot_class_path);
+
   // Expand a single image location to multi-image locations based on the dex locations.
   static std::vector<std::string> ExpandMultiImageLocations(
       const std::vector<std::string>& dex_locations,
@@ -188,6 +203,11 @@
   friend class Space;
 
  private:
+  // Internal overload that takes ArrayRef<> instead of vector<>.
+  static std::vector<std::string> ExpandMultiImageLocations(
+      ArrayRef<const std::string> dex_locations,
+      const std::string& image_location);
+
   class BootImageLoader;
   template <typename ReferenceVisitor>
   class ClassTableVisitor;
diff --git a/runtime/oat.cc b/runtime/oat.cc
index e931b28..d7c968f 100644
--- a/runtime/oat.cc
+++ b/runtime/oat.cc
@@ -79,8 +79,7 @@
       quick_generic_jni_trampoline_offset_(0),
       quick_imt_conflict_trampoline_offset_(0),
       quick_resolution_trampoline_offset_(0),
-      quick_to_interpreter_bridge_offset_(0),
-      boot_image_checksum_(0) {
+      quick_to_interpreter_bridge_offset_(0) {
   // Don't want asserts in header as they would be checked in each file that includes it. But the
   // fields are private, so we check inside a method.
   static_assert(sizeof(magic_) == sizeof(kOatMagic),
@@ -316,16 +315,6 @@
   quick_to_interpreter_bridge_offset_ = offset;
 }
 
-uint32_t OatHeader::GetBootImageChecksum() const {
-  CHECK(IsValid());
-  return boot_image_checksum_;
-}
-
-void OatHeader::SetBootImageChecksum(uint32_t boot_image_checksum) {
-  CHECK(IsValid());
-  boot_image_checksum_ = boot_image_checksum;
-}
-
 uint32_t OatHeader::GetKeyValueStoreSize() const {
   CHECK(IsValid());
   return key_value_store_size_;
diff --git a/runtime/oat.h b/runtime/oat.h
index b09c81e..ded1489 100644
--- a/runtime/oat.h
+++ b/runtime/oat.h
@@ -31,8 +31,8 @@
 class PACKED(4) OatHeader {
  public:
   static constexpr uint8_t kOatMagic[] = { 'o', 'a', 't', '\n' };
-  // Last oat version changed reason: Pass boot class path to LoadBootImage.
-  static constexpr uint8_t kOatVersion[] = { '1', '6', '5', '\0' };
+  // Last oat version changed reason: Partial boot image.
+  static constexpr uint8_t kOatVersion[] = { '1', '6', '6', '\0' };
 
   static constexpr const char* kDex2OatCmdLineKey = "dex2oat-cmdline";
   static constexpr const char* kDebuggableKey = "debuggable";
@@ -40,6 +40,7 @@
   static constexpr const char* kCompilerFilter = "compiler-filter";
   static constexpr const char* kClassPathKey = "classpath";
   static constexpr const char* kBootClassPathKey = "bootclasspath";
+  static constexpr const char* kBootClassPathChecksumsKey = "bootclasspath-checksums";
   static constexpr const char* kConcurrentCopying = "concurrent-copying";
   static constexpr const char* kCompilationReasonKey = "compilation-reason";
 
@@ -93,9 +94,6 @@
   InstructionSet GetInstructionSet() const;
   uint32_t GetInstructionSetFeaturesBitmap() const;
 
-  uint32_t GetBootImageChecksum() const;
-  void SetBootImageChecksum(uint32_t boot_image_checksum);
-
   uint32_t GetKeyValueStoreSize() const;
   const uint8_t* GetKeyValueStore() const;
   const char* GetStoreValueByKey(const char* key) const;
@@ -137,8 +135,6 @@
   uint32_t quick_resolution_trampoline_offset_;
   uint32_t quick_to_interpreter_bridge_offset_;
 
-  uint32_t boot_image_checksum_;
-
   uint32_t key_value_store_size_;
   uint8_t key_value_store_[0];  // note variable width data at end
 
diff --git a/runtime/oat_file_assistant.cc b/runtime/oat_file_assistant.cc
index 6f32b98..8b81bb9 100644
--- a/runtime/oat_file_assistant.cc
+++ b/runtime/oat_file_assistant.cc
@@ -419,7 +419,7 @@
       // starts up.
       LOG(WARNING) << "Dex location " << dex_location_ << " does not seem to include dex file. "
         << "Allow oat file use. This is potentially dangerous.";
-    } else if (file.GetOatHeader().GetBootImageChecksum() != image_info->boot_image_checksum) {
+    } else if (!image_info->ValidateBootClassPathChecksums(file)) {
       VLOG(oat) << "Oat image checksum does not match image checksum.";
       return kOatBootImageOutOfDate;
     }
@@ -560,6 +560,13 @@
   return required_dex_checksums_found_ ? &cached_required_dex_checksums_ : nullptr;
 }
 
+bool OatFileAssistant::ImageInfo::ValidateBootClassPathChecksums(const OatFile& oat_file) const {
+  const char* oat_boot_class_path_checksums =
+      oat_file.GetOatHeader().GetStoreValueByKey(OatHeader::kBootClassPathChecksumsKey);
+  return oat_boot_class_path_checksums != nullptr &&
+         oat_boot_class_path_checksums == boot_class_path_checksums;
+}
+
 std::unique_ptr<OatFileAssistant::ImageInfo>
 OatFileAssistant::ImageInfo::GetRuntimeImageInfo(InstructionSet isa, std::string* error_msg) {
   CHECK(error_msg != nullptr);
@@ -567,14 +574,11 @@
   Runtime* runtime = Runtime::Current();
   std::unique_ptr<ImageInfo> info(new ImageInfo());
   info->location = runtime->GetImageLocation();
-
-  std::unique_ptr<ImageHeader> image_header(
-      gc::space::ImageSpace::ReadImageHeader(info->location.c_str(), isa, error_msg));
-  if (image_header == nullptr) {
+  info->boot_class_path_checksums = gc::space::ImageSpace::GetBootClassPathChecksums(
+      runtime->GetBootClassPath(), info->location, isa, error_msg);
+  if (info->boot_class_path_checksums.empty()) {
     return nullptr;
   }
-
-  info->boot_image_checksum = image_header->GetImageChecksum();
   return info;
 }
 
diff --git a/runtime/oat_file_assistant.h b/runtime/oat_file_assistant.h
index 09c9d3b..def55b8 100644
--- a/runtime/oat_file_assistant.h
+++ b/runtime/oat_file_assistant.h
@@ -246,8 +246,10 @@
 
  private:
   struct ImageInfo {
-    uint32_t boot_image_checksum = 0;
+    bool ValidateBootClassPathChecksums(const OatFile& oat_file) const;
+
     std::string location;
+    std::string boot_class_path_checksums;
 
     static std::unique_ptr<ImageInfo> GetRuntimeImageInfo(InstructionSet isa,
                                                           std::string* error_msg);
diff --git a/runtime/runtime.cc b/runtime/runtime.cc
index d2c915e..c5a8a23 100644
--- a/runtime/runtime.cc
+++ b/runtime/runtime.cc
@@ -971,8 +971,8 @@
   VLOG(startup) << "Runtime::StartDaemonThreads exiting";
 }
 
-static size_t OpenDexFiles(const std::vector<std::string>& dex_filenames,
-                           const std::vector<std::string>& dex_locations,
+static size_t OpenDexFiles(ArrayRef<const std::string> dex_filenames,
+                           ArrayRef<const std::string> dex_locations,
                            std::vector<std::unique_ptr<const DexFile>>* dex_files) {
   DCHECK(dex_files != nullptr) << "OpenDexFiles: out-param is nullptr";
   size_t failure_count = 0;
@@ -1429,6 +1429,21 @@
         GetInternTable()->AddImageStringsToTable(image_space, VoidFunctor());
       }
     }
+    if (heap_->GetBootImageSpaces().size() != GetBootClassPath().size()) {
+      // The boot image did not contain all boot class path components. Load the rest.
+      DCHECK_LT(heap_->GetBootImageSpaces().size(), GetBootClassPath().size());
+      size_t start = heap_->GetBootImageSpaces().size();
+      DCHECK_LT(start, GetBootClassPath().size());
+      std::vector<std::unique_ptr<const DexFile>> extra_boot_class_path;
+      if (runtime_options.Exists(Opt::BootClassPathDexList)) {
+        extra_boot_class_path.swap(*runtime_options.GetOrDefault(Opt::BootClassPathDexList));
+      } else {
+        OpenDexFiles(ArrayRef<const std::string>(GetBootClassPath()).SubArray(start),
+                     ArrayRef<const std::string>(GetBootClassPathLocations()).SubArray(start),
+                     &extra_boot_class_path);
+      }
+      class_linker_->AddExtraBootDexFiles(self, std::move(extra_boot_class_path));
+    }
     if (IsJavaDebuggable()) {
       // Now that we have loaded the boot image, deoptimize its methods if we are running
       // debuggable, as the code may have been compiled non-debuggable.
@@ -1439,7 +1454,9 @@
     if (runtime_options.Exists(Opt::BootClassPathDexList)) {
       boot_class_path.swap(*runtime_options.GetOrDefault(Opt::BootClassPathDexList));
     } else {
-      OpenDexFiles(GetBootClassPath(), GetBootClassPathLocations(), &boot_class_path);
+      OpenDexFiles(ArrayRef<const std::string>(GetBootClassPath()),
+                   ArrayRef<const std::string>(GetBootClassPathLocations()),
+                   &boot_class_path);
     }
     if (!class_linker_->InitWithoutImage(std::move(boot_class_path), &error_msg)) {
       LOG(ERROR) << "Could not initialize without image: " << error_msg;
diff --git a/test/etc/run-test-jar b/test/etc/run-test-jar
index 16106ab..4c31ee5 100755
--- a/test/etc/run-test-jar
+++ b/test/etc/run-test-jar
@@ -548,7 +548,10 @@
   exit
 fi
 
-bpath_modules="core-oj core-libart core-simple conscrypt okhttp bouncycastle"
+# Note: This must start with the CORE_IMG_JARS in Android.common_path.mk
+# because that's what we use for compiling the core.art image.
+# It may contain additional modules from TEST_CORE_JARS.
+bpath_modules="core-oj core-libart core-simple okhttp bouncycastle conscrypt"
 if [ "${HOST}" = "y" ]; then
     framework="${ANDROID_HOST_OUT}/framework"
     if [ "${ANDROID_HOST_OUT:0:${#ANDROID_BUILD_TOP}+1}" = "${ANDROID_BUILD_TOP}/" ]; then
diff --git a/tools/bootjars.sh b/tools/bootjars.sh
index ad6ee6b..9f22827 100755
--- a/tools/bootjars.sh
+++ b/tools/bootjars.sh
@@ -72,8 +72,10 @@
   # FIXME: The soong invocation we're using for getting the variables does not give us anything
   # defined in Android.common_path.mk, otherwise we would just use HOST-/TARGET_TEST_CORE_JARS.
 
-  # The core_jars_list must match the TEST_CORE_JARS variable in the Android.common_path.mk .
-  core_jars_list="core-oj core-libart core-simple conscrypt okhttp bouncycastle"
+  # Note: This must start with the CORE_IMG_JARS in Android.common_path.mk
+  # because that's what we use for compiling the core.art image.
+  # It may contain additional modules from TEST_CORE_JARS.
+  core_jars_list="core-oj core-libart core-simple"
   core_jars_suffix=
   if [[ $mode == target ]]; then
     core_jars_suffix=-testdex
diff --git a/tools/run-jdwp-tests.sh b/tools/run-jdwp-tests.sh
index f4a2dc1..c85a5ed 100755
--- a/tools/run-jdwp-tests.sh
+++ b/tools/run-jdwp-tests.sh
@@ -55,9 +55,10 @@
   done
 }
 
-# Note: This must match the TEST_CORE_JARS in Android.common_path.mk
+# Note: This must start with the CORE_IMG_JARS in Android.common_path.mk
 # because that's what we use for compiling the core.art image.
-BOOT_CLASSPATH_JARS="core-oj core-libart core-simple conscrypt okhttp bouncycastle"
+# It may contain additional modules from TEST_CORE_JARS.
+BOOT_CLASSPATH_JARS="core-oj core-libart core-simple okhttp bouncycastle conscrypt"
 
 vm_args=""
 art="$android_root/bin/art"
diff --git a/tools/run-libcore-tests.sh b/tools/run-libcore-tests.sh
index 63f1fce..63fe81b 100755
--- a/tools/run-libcore-tests.sh
+++ b/tools/run-libcore-tests.sh
@@ -57,9 +57,10 @@
   done
 }
 
-# Note: This must match the TEST_CORE_JARS in Android.common_path.mk
+# Note: This must start with the CORE_IMG_JARS in Android.common_path.mk
 # because that's what we use for compiling the core.art image.
-BOOT_CLASSPATH_JARS="core-oj core-libart core-simple conscrypt okhttp bouncycastle"
+# It may contain additional modules from TEST_CORE_JARS.
+BOOT_CLASSPATH_JARS="core-oj core-libart core-simple okhttp bouncycastle conscrypt"
 
 DEPS="core-tests jsr166-tests mockito-target"