diff --git a/core/definitions.mk b/core/definitions.mk
index ffd8602..d9cfa62 100644
--- a/core/definitions.mk
+++ b/core/definitions.mk
@@ -2870,16 +2870,20 @@
 define hiddenapi-generate-greylist-txt
 ifneq (,$(wildcard frameworks/base))
 # Only generate this target if we're in a tree with frameworks/base present.
-$(3): .KATI_IMPLICIT_OUTPUTS := $(2)
+$(3): .KATI_IMPLICIT_OUTPUTS := $(2) $(4)
+# For now, write P & Q blacklist to single file until runtime support is finished
 $(3): $(1) $(CLASS2GREYLIST) $(INTERNAL_PLATFORM_HIDDENAPI_PUBLIC_LIST)
 	$(CLASS2GREYLIST) --public-api-list $(INTERNAL_PLATFORM_HIDDENAPI_PUBLIC_LIST) $(1) \
-	    --write-whitelist $(2) --write-greylist $(3)
+	    --write-whitelist $(2) \
+	    --write-greylist $(3) \
+	    --write-greylist 26,28:$(4)
 
-$(INTERNAL_PLATFORM_HIDDENAPI_WHITELIST): $(2) $(3)
+$(INTERNAL_PLATFORM_HIDDENAPI_WHITELIST): $(2) $(3) $(4)
 $(INTERNAL_PLATFORM_HIDDENAPI_WHITELIST): \
     PRIVATE_WHITELIST_INPUTS := $$(PRIVATE_WHITELIST_INPUTS) $(2)
 $(INTERNAL_PLATFORM_HIDDENAPI_WHITELIST): \
     PRIVATE_GREYLIST_INPUTS := $$(PRIVATE_GREYLIST_INPUTS) $(3)
+    PRIVATE_DARKGREYLIST_INPUTS := $$(PRIVATE_DARKGREYLIST_INPUTS) $(4)
 endif
 endef
 
diff --git a/core/java.mk b/core/java.mk
index e5f1f4a..cf9bf56 100644
--- a/core/java.mk
+++ b/core/java.mk
@@ -76,6 +76,7 @@
 java_source_list_file := $(intermediates.COMMON)/java-source-list
 hiddenapi_whitelist_txt := $(intermediates.COMMON)/hiddenapi/whitelist.txt
 hiddenapi_greylist_txt := $(intermediates.COMMON)/hiddenapi/greylist.txt
+hiddenapi_darkgreylist_txt := $(intermediates.COMMON)/hiddenapi/darkgreylist.txt
 
 ifeq ($(LOCAL_MODULE_CLASS)$(LOCAL_SRC_FILES)$(LOCAL_STATIC_JAVA_LIBRARIES)$(LOCAL_SOURCE_FILES_ALL_GENERATED),APPS)
 # If this is an apk without any Java code (e.g. framework-res), we should skip compiling Java.
@@ -503,8 +504,8 @@
   # dex later on. The difference is academic currently, as we don't proguard any
   # bootclasspath code at the moment. If we were to do that, we should add keep
   # rules for all members with the @UnsupportedAppUsage annotation.
-  $(eval $(call hiddenapi-generate-greylist-txt, $(full_classes_pre_proguard_jar),$(hiddenapi_whitelist_txt),$(hiddenapi_greylist_txt)))
-  LOCAL_INTERMEDIATE_TARGETS += $(hiddenapi_whitelist_txt) $(hiddenapi_greylist_txt)
+  $(eval $(call hiddenapi-generate-greylist-txt, $(full_classes_pre_proguard_jar),$(hiddenapi_whitelist_txt),$(hiddenapi_greylist_txt),$(hiddenapi_darkgreylist_txt)))
+  LOCAL_INTERMEDIATE_TARGETS += $(hiddenapi_whitelist_txt) $(hiddenapi_greylist_txt) $(hiddenapi_darkgreylist_txt)
   $(eval $(call hiddenapi-copy-dex-files,$(built_dex_intermediate),$(built_dex_hiddenapi)))
   built_dex_copy_from := $(built_dex_hiddenapi)
 else # !is_boot_jar
diff --git a/core/soong_java_prebuilt.mk b/core/soong_java_prebuilt.mk
index 311e3d4..18a09fb 100644
--- a/core/soong_java_prebuilt.mk
+++ b/core/soong_java_prebuilt.mk
@@ -21,6 +21,7 @@
 common_javalib.jar := $(intermediates.COMMON)/javalib.jar
 hiddenapi_whitelist_txt := $(intermediates.COMMON)/hiddenapi/whitelist.txt
 hiddenapi_greylist_txt := $(intermediates.COMMON)/hiddenapi/greylist.txt
+hiddenapi_darkgreylist_txt := $(intermediates.COMMON)/hiddenapi/darkgreylist.txt
 
 $(eval $(call copy-one-file,$(LOCAL_PREBUILT_MODULE_FILE),$(full_classes_jar)))
 $(eval $(call copy-one-file,$(LOCAL_PREBUILT_MODULE_FILE),$(full_classes_pre_proguard_jar)))
@@ -78,7 +79,7 @@
         # We use full_classes_jar here, which is the post-proguard jar (on the basis that we also
         # have a full_classes_pre_proguard_jar). This is consistent with the equivalent code in
         # java.mk.
-        $(eval $(call hiddenapi-generate-greylist-txt,$(full_classes_jar),$(hiddenapi_whitelist_txt),$(hiddenapi_greylist_txt)))
+        $(eval $(call hiddenapi-generate-greylist-txt,$(full_classes_jar),$(hiddenapi_whitelist_txt),$(hiddenapi_greylist_txt),$(hiddenapi_darkgreylist_txt)))
         $(eval $(call hiddenapi-copy-soong-jar,$(LOCAL_SOONG_DEX_JAR),$(common_javalib.jar)))
       else # !is_boot_jar
         $(eval $(call copy-one-file,$(LOCAL_SOONG_DEX_JAR),$(common_javalib.jar)))