diff --git a/core/tasks/cts.mk b/core/tasks/cts.mk
index 966ceb7..16b5c49 100644
--- a/core/tasks/cts.mk
+++ b/core/tasks/cts.mk
@@ -79,3 +79,148 @@
 	mkdir -p $(PRIVATE_DIR)
 	unzip -q -d $(PRIVATE_DIR) $<
 	$(copy-file-to-target)
+
+# For producing CTS coverage reports.
+# Run "make cts-test-coverage" in the $ANDROID_BUILD_TOP directory.
+
+cts_api_coverage_exe := $(HOST_OUT_EXECUTABLES)/cts-api-coverage
+dexdeps_exe := $(HOST_OUT_EXECUTABLES)/dexdeps
+
+coverage_out := $(HOST_OUT)/cts-api-coverage
+
+api_xml_description := $(TARGET_OUT_COMMON_INTERMEDIATES)/api.xml
+
+napi_text_description := cts/tools/cts-api-coverage/etc/ndk-api.xml
+napi_xml_description := $(coverage_out)/ndk-api.xml
+$(napi_xml_description) : $(napi_text_description) $(ACP)
+		$(hide) echo "Preparing NDK API XML: $@"
+		$(hide) mkdir -p $(dir $@)
+		$(hide) $(ACP)  $< $@
+
+system_api_xml_description := $(TARGET_OUT_COMMON_INTERMEDIATES)/system-api.xml
+
+cts-test-coverage-report := $(coverage_out)/test-coverage.html
+cts-system-api-coverage-report := $(coverage_out)/system-api-coverage.html
+cts-system-api-xml-coverage-report := $(coverage_out)/system-api-coverage.xml
+cts-verifier-coverage-report := $(coverage_out)/verifier-coverage.html
+cts-combined-coverage-report := $(coverage_out)/combined-coverage.html
+cts-combined-xml-coverage-report := $(coverage_out)/combined-coverage.xml
+
+cts_api_coverage_dependencies := $(cts_api_coverage_exe) $(dexdeps_exe) $(api_xml_description) $(napi_xml_description)
+cts_system_api_coverage_dependencies := $(cts_api_coverage_exe) $(dexdeps_exe) $(system_api_xml_description)
+
+android_cts_zip := $(HOST_OUT)/cts/android-cts.zip
+cts_verifier_apk := $(call intermediates-dir-for,APPS,CtsVerifier)/package.apk
+
+$(cts-test-coverage-report): PRIVATE_TEST_CASES := $(COMPATIBILITY_TESTCASES_OUT_cts)
+$(cts-test-coverage-report): PRIVATE_CTS_API_COVERAGE_EXE := $(cts_api_coverage_exe)
+$(cts-test-coverage-report): PRIVATE_DEXDEPS_EXE := $(dexdeps_exe)
+$(cts-test-coverage-report): PRIVATE_API_XML_DESC := $(api_xml_description)
+$(cts-test-coverage-report): PRIVATE_NAPI_XML_DESC := $(napi_xml_description)
+$(cts-test-coverage-report) : $(android_cts_zip) $(cts_api_coverage_dependencies) | $(ACP)
+	$(call generate-coverage-report-cts,"CTS Tests API-NDK Coverage Report",\
+			$(PRIVATE_TEST_CASES),html)
+
+$(cts-system-api-coverage-report): PRIVATE_TEST_CASES := $(COMPATIBILITY_TESTCASES_OUT_cts)
+$(cts-system-api-coverage-report): PRIVATE_CTS_API_COVERAGE_EXE := $(cts_api_coverage_exe)
+$(cts-system-api-coverage-report): PRIVATE_DEXDEPS_EXE := $(dexdeps_exe)
+$(cts-system-api-coverage-report): PRIVATE_API_XML_DESC := $(system_api_xml_description)
+$(cts-system-api-coverage-report): PRIVATE_NAPI_XML_DESC := ""
+$(cts-system-api-coverage-report) : $(android_cts_zip) $(cts_system_api_coverage_dependencies) | $(ACP)
+	$(call generate-coverage-report-cts,"CTS System API Coverage Report",\
+			$(PRIVATE_TEST_CASES),html)
+
+$(cts-system-api-xml-coverage-report): PRIVATE_TEST_CASES := $(COMPATIBILITY_TESTCASES_OUT_cts)
+$(cts-system-api-xml-coverage-report): PRIVATE_CTS_API_COVERAGE_EXE := $(cts_api_coverage_exe)
+$(cts-system-api-xml-coverage-report): PRIVATE_DEXDEPS_EXE := $(dexdeps_exe)
+$(cts-system-api-xml-coverage-report): PRIVATE_API_XML_DESC := $(system_api_xml_description)
+$(cts-system-api-xml-coverage-report): PRIVATE_NAPI_XML_DESC := ""
+$(cts-system-api-xml-coverage-report) : $(android_cts_zip) $(cts_system_api_coverage_dependencies) | $(ACP)
+	$(call generate-coverage-report-cts,"CTS System API Coverage Report - XML",\
+			$(PRIVATE_TEST_CASES),xml)
+
+$(cts-verifier-coverage-report): PRIVATE_TEST_CASES := $(cts_verifier_apk)
+$(cts-verifier-coverage-report): PRIVATE_CTS_API_COVERAGE_EXE := $(cts_api_coverage_exe)
+$(cts-verifier-coverage-report): PRIVATE_DEXDEPS_EXE := $(dexdeps_exe)
+$(cts-verifier-coverage-report): PRIVATE_API_XML_DESC := $(api_xml_description)
+$(cts-verifier-coverage-report): PRIVATE_NAPI_XML_DESC := $(napi_xml_description)
+$(cts-verifier-coverage-report) : $(cts_verifier_apk) $(cts_api_coverage_dependencies) | $(ACP)
+	$(call generate-coverage-report-cts,"CTS Verifier API Coverage Report",\
+			$(PRIVATE_TEST_CASES),html)
+
+$(cts-combined-coverage-report): PRIVATE_TEST_CASES := $(foreach c, $(cts_verifier_apk) $(COMPATIBILITY_TESTCASES_OUT_cts), $(c))
+$(cts-combined-coverage-report): PRIVATE_CTS_API_COVERAGE_EXE := $(cts_api_coverage_exe)
+$(cts-combined-coverage-report): PRIVATE_DEXDEPS_EXE := $(dexdeps_exe)
+$(cts-combined-coverage-report): PRIVATE_API_XML_DESC := $(api_xml_description)
+$(cts-combined-coverage-report): PRIVATE_NAPI_XML_DESC := $(napi_xml_description)
+$(cts-combined-coverage-report) : $(android_cts_zip) $(cts_verifier_apk) $(cts_api_coverage_dependencies) | $(ACP)
+	$(call generate-coverage-report-cts,"CTS Combined API Coverage Report",\
+			$(PRIVATE_TEST_CASES),html)
+
+$(cts-combined-xml-coverage-report): PRIVATE_TEST_CASES := $(foreach c, $(cts_verifier_apk) $(COMPATIBILITY_TESTCASES_OUT_cts), $(c))
+$(cts-combined-xml-coverage-report): PRIVATE_CTS_API_COVERAGE_EXE := $(cts_api_coverage_exe)
+$(cts-combined-xml-coverage-report): PRIVATE_DEXDEPS_EXE := $(dexdeps_exe)
+$(cts-combined-xml-coverage-report): PRIVATE_API_XML_DESC := $(api_xml_description)
+$(cts-combined-xml-coverage-report): PRIVATE_NAPI_XML_DESC := $(napi_xml_description)
+$(cts-combined-xml-coverage-report) : $(android_cts_zip) $(cts_verifier_apk) $(cts_api_coverage_dependencies) | $(ACP)
+	$(call generate-coverage-report-cts,"CTS Combined API Coverage Report - XML",\
+			$(PRIVATE_TEST_CASES),xml)
+
+.PHONY: cts-test-coverage
+cts-test-coverage : $(cts-test-coverage-report)
+
+.PHONY: cts-system-api-coverage
+cts-system-api-coverage : $(cts-system-api-coverage-report)
+
+.PHONY: cts-system-api-xml-coverage
+cts-system-api-xml-coverage : $(cts-system-api-xml-coverage-report)
+
+.PHONY: cts-verifier-coverage
+cts-verifier-coverage : $(cts-verifier-coverage-report)
+
+.PHONY: cts-combined-coverage
+cts-combined-coverage : $(cts-combined-coverage-report)
+
+.PHONY: cts-combined-xml-coverage
+cts-combined-xml-coverage : $(cts-combined-xml-coverage-report)
+
+.PHONY: cts-coverage-report-all cts-api-coverage
+cts-coverage-report-all: cts-test-coverage cts-verifier-coverage cts-combined-coverage cts-combined-xml-coverage
+
+# Put the test coverage report in the dist dir if "cts-api-coverage" is among the build goals.
+$(call dist-for-goals, cts-api-coverage, $(cts-test-coverage-report):cts-test-coverage-report.html)
+$(call dist-for-goals, cts-api-coverage, $(cts-system-api-coverage-report):cts-system-api-coverage-report.html)
+$(call dist-for-goals, cts-api-coverage, $(cts-system-api-xml-coverage-report):cts-system-api-coverage-report.xml)
+$(call dist-for-goals, cts-api-coverage, $(cts-verifier-coverage-report):cts-verifier-coverage-report.html)
+$(call dist-for-goals, cts-api-coverage, $(cts-combined-coverage-report):cts-combined-coverage-report.html)
+$(call dist-for-goals, cts-api-coverage, $(cts-combined-xml-coverage-report):cts-combined-coverage-report.xml)
+
+# Arguments;
+#  1 - Name of the report printed out on the screen
+#  2 - List of apk files that will be scanned to generate the report
+#  3 - Format of the report
+define generate-coverage-report-cts
+	$(hide) mkdir -p $(dir $@)
+	$(hide) $(PRIVATE_CTS_API_COVERAGE_EXE) -d $(PRIVATE_DEXDEPS_EXE) -a $(PRIVATE_API_XML_DESC) -n $(PRIVATE_NAPI_XML_DESC) -f $(3) -o $@ $(2)
+	@ echo $(1): file://$$(cd $(dir $@); pwd)/$(notdir $@)
+endef
+
+# Reset temp vars
+cts_api_coverage_dependencies :=
+cts_system_api_coverage_dependencies :=
+cts-combined-coverage-report :=
+cts-combined-xml-coverage-report :=
+cts-verifier-coverage-report :=
+cts-test-coverage-report :=
+cts-system-api-coverage-report :=
+cts-system-api-xml-coverage-report :=
+api_xml_description :=
+api_text_description :=
+system_api_xml_description :=
+napi_xml_description :=
+napi_text_description :=
+coverage_out :=
+dexdeps_exe :=
+cts_api_coverage_exe :=
+cts_verifier_apk :=
+android_cts_zip :=