diff --git a/core/Makefile b/core/Makefile
index bd77911..0e38838 100644
--- a/core/Makefile
+++ b/core/Makefile
@@ -1398,7 +1398,6 @@
 ifeq ($(BUILDING_VENDOR_KERNEL_BOOT_IMAGE),true)
 
 INTERNAL_VENDOR_KERNEL_RAMDISK_FILES := $(filter $(TARGET_VENDOR_KERNEL_RAMDISK_OUT)/%, \
-    $(ALL_GENERATED_SOURCES) \
     $(ALL_DEFAULT_INSTALLED_MODULES))
 
 INTERNAL_VENDOR_KERNEL_RAMDISK_TARGET := $(call intermediates-dir-for,PACKAGING,vendor_kernel_boot)/vendor_kernel_ramdisk.cpio$(RAMDISK_EXT)
@@ -6159,25 +6158,39 @@
 # -----------------------------------------------------------------
 # A zip of the symbols directory.  Keep the full paths to make it
 # more obvious where these files came from.
+# Also produces a textproto containing mappings from elf IDs to symbols
+# filename, which will allow finding the appropriate symbols to deobfuscate
+# a stack trace frame.
 #
+
 name := $(TARGET_PRODUCT)
 ifeq ($(TARGET_BUILD_TYPE),debug)
   name := $(name)_debug
 endif
-name := $(name)-symbols-$(FILE_NAME_TAG)
 
-SYMBOLS_ZIP := $(PRODUCT_OUT)/$(name).zip
+# The path to the zip file containing binaries with symbols.
+SYMBOLS_ZIP := $(PRODUCT_OUT)/$(name)-symbols-$(FILE_NAME_TAG).zip
+# The path to a file containing mappings from elf IDs to filenames.
+SYMBOLS_MAPPING := $(PRODUCT_OUT)/$(name)-symbols-mapping-$(FILE_NAME_TAG).textproto
+.KATI_READONLY := SYMBOLS_ZIP SYMBOLS_MAPPING
 # For apps_only build we'll establish the dependency later in build/make/core/main.mk.
 ifeq (,$(TARGET_BUILD_UNBUNDLED))
 $(SYMBOLS_ZIP): $(INTERNAL_ALLIMAGES_FILES) $(updater_dep)
 endif
 $(SYMBOLS_ZIP): PRIVATE_LIST_FILE := $(call intermediates-dir-for,PACKAGING,symbols)/filelist
-$(SYMBOLS_ZIP): $(SOONG_ZIP)
+$(SYMBOLS_ZIP): PRIVATE_MAPPING_PACKAGING_DIR := $(call intermediates-dir-for,PACKAGING,elf_symbol_mapping)
+$(SYMBOLS_ZIP): $(SOONG_ZIP) $(SYMBOLS_MAP)
 	@echo "Package symbols: $@"
 	$(hide) rm -rf $@ $(PRIVATE_LIST_FILE)
-	$(hide) mkdir -p $(dir $@) $(TARGET_OUT_UNSTRIPPED) $(dir $(PRIVATE_LIST_FILE))
+	$(hide) mkdir -p $(TARGET_OUT_UNSTRIPPED) $(dir $(PRIVATE_LIST_FILE)) $(PRIVATE_MAPPING_PACKAGING_DIR)
+	# Find all of the files in the symbols directory and zip them into the symbols zip.
 	$(hide) find -L $(TARGET_OUT_UNSTRIPPED) -type f | sort >$(PRIVATE_LIST_FILE)
 	$(hide) $(SOONG_ZIP) --ignore_missing_files -d -o $@ -C $(OUT_DIR)/.. -l $(PRIVATE_LIST_FILE)
+	# Find all of the files in the symbols mapping directory and merge them into the symbols mapping textproto.
+	$(hide) find -L $(PRIVATE_MAPPING_PACKAGING_DIR) -type f | sort >$(PRIVATE_LIST_FILE)
+	$(hide) $(SYMBOLS_MAP) -merge $(SYMBOLS_MAPPING) -ignore_missing_files @$(PRIVATE_LIST_FILE)
+$(SYMBOLS_ZIP): .KATI_IMPLICIT_OUTPUTS := $(SYMBOLS_MAPPING)
+
 # -----------------------------------------------------------------
 # A zip of the coverage directory.
 #
@@ -6270,17 +6283,35 @@
 
 #------------------------------------------------------------------
 # A zip of Proguard obfuscation dictionary files.
+# Also produces a textproto containing mappings from the hashes of the
+# dictionary contents (which are also stored in the dex files on the
+# devices) to the filename of the proguard dictionary, which will allow
+# finding the appropriate dictionary to deobfuscate a stack trace frame.
 #
+
+# The path to the zip file containing proguard dictionaries.
 PROGUARD_DICT_ZIP := $(PRODUCT_OUT)/$(TARGET_PRODUCT)-proguard-dict-$(FILE_NAME_TAG).zip
+# The path to the zip file containing mappings from dictionary hashes to filenames.
+PROGUARD_DICT_MAPPING := $(PRODUCT_OUT)/$(TARGET_PRODUCT)-proguard-dict-mapping-$(FILE_NAME_TAG).textproto
+.KATI_READONLY := PROGUARD_DICT_ZIP PROGUARD_DICT_MAPPING
 # For apps_only build we'll establish the dependency later in build/make/core/main.mk.
 ifeq (,$(TARGET_BUILD_UNBUNDLED))
 $(PROGUARD_DICT_ZIP): $(INTERNAL_ALLIMAGES_FILES) $(updater_dep)
 endif
 $(PROGUARD_DICT_ZIP): PRIVATE_PACKAGING_DIR := $(call intermediates-dir-for,PACKAGING,proguard_dictionary)
-$(PROGUARD_DICT_ZIP): $(SOONG_ZIP)
+$(PROGUARD_DICT_ZIP): PRIVATE_MAPPING_PACKAGING_DIR := $(call intermediates-dir-for,PACKAGING,proguard_dictionary_mapping)
+$(PROGUARD_DICT_ZIP): PRIVATE_LIST_FILE := $(call intermediates-dir-for,PACKAGING,proguard_dictionary_filelist)/filelist
+$(PROGUARD_DICT_ZIP): $(SOONG_ZIP) $(SYMBOLS_MAP)
 	@echo "Packaging Proguard obfuscation dictionary files."
-	mkdir -p $(dir $@) $(PRIVATE_PACKAGING_DIR)
-	$(SOONG_ZIP) --ignore_missing_files -d -o $@ -C $(PRIVATE_PACKAGING_DIR) -P out/target/common/obj -D $(PRIVATE_PACKAGING_DIR)
+	rm -rf $@ $(PRIVATE_LIST_FILE)
+	mkdir -p $(PRIVATE_PACKAGING_DIR) $(PRIVATE_MAPPING_PACKAGING_DIR) $(dir $(PRIVATE_LIST_FILE))
+	# Zip all of the files in the proguard dictionary directory.
+	$(SOONG_ZIP) --ignore_missing_files -d -o $@ -C $(PRIVATE_PACKAGING_DIR) -D $(PRIVATE_PACKAGING_DIR)
+	# Find all of the files in the proguard dictionary mapping directory and merge them into the mapping textproto.
+	# Strip the PRIVATE_PACKAGING_DIR off the filenames to match soong_zip's -C argument.
+	$(hide) find -L $(PRIVATE_MAPPING_PACKAGING_DIR) -type f | sort >$(PRIVATE_LIST_FILE)
+	$(SYMBOLS_MAP) -merge $(PROGUARD_DICT_MAPPING) -strip_prefix $(PRIVATE_PACKAGING_DIR)/ -ignore_missing_files @$(PRIVATE_LIST_FILE)
+$(PROGUARD_DICT_ZIP): .KATI_IMPLICIT_OUTPUTS := $(PROGUARD_DICT_MAPPING)
 
 #------------------------------------------------------------------
 # A zip of Proguard usage files.
diff --git a/core/config.mk b/core/config.mk
index e2bdcbd..205a2fb 100644
--- a/core/config.mk
+++ b/core/config.mk
@@ -620,6 +620,7 @@
 OTA_FROM_TARGET_FILES := $(HOST_OUT_EXECUTABLES)/ota_from_target_files$(HOST_EXECUTABLE_SUFFIX)
 SPARSE_IMG := $(HOST_OUT_EXECUTABLES)/sparse_img$(HOST_EXECUTABLE_SUFFIX)
 CHECK_PARTITION_SIZES := $(HOST_OUT_EXECUTABLES)/check_partition_sizes$(HOST_EXECUTABLE_SUFFIX)
+SYMBOLS_MAP := $(HOST_OUT_EXECUTABLES)/symbols_map
 
 PROGUARD_HOME := external/proguard
 PROGUARD := $(PROGUARD_HOME)/bin/proguard.sh
diff --git a/core/definitions.mk b/core/definitions.mk
index 2711f57..7308a38 100644
--- a/core/definitions.mk
+++ b/core/definitions.mk
@@ -622,24 +622,29 @@
 $(2): PRIVATE_MODULE_TYPE := $(ALL_MODULES.$(1).MODULE_TYPE)
 $(2): PRIVATE_MODULE_CLASS := $(ALL_MODULES.$(1).MODULE_CLASS)
 $(2): PRIVATE_INSTALL_MAP := $(_map)
+$(2): PRIVATE_ARGUMENT_FILE := $(call intermediates-dir-for,PACKAGING,notice)/$(2)/arguments
 $(2): $(BUILD_LICENSE_METADATA)
 $(2) : $(foreach d,$(_deps),$(call word-colon,1,$(d))) $(foreach n,$(_notices),$(call word-colon,1,$(n)) )
 	rm -f $$@
 	mkdir -p $$(dir $$@)
+	mkdir -p $$(dir $$(PRIVATE_ARGUMENT_FILE))
+	$$(call dump-words-to-file,\
+	    $$(addprefix -mt ,$$(PRIVATE_MODULE_TYPE))\
+	    $$(addprefix -mc ,$$(PRIVATE_MODULE_CLASS))\
+	    $$(addprefix -k ,$$(PRIVATE_KINDS))\
+	    $$(addprefix -c ,$$(PRIVATE_CONDITIONS))\
+	    $$(addprefix -n ,$$(PRIVATE_NOTICES))\
+	    $$(addprefix -d ,$$(PRIVATE_NOTICE_DEPS))\
+	    $$(addprefix -s ,$$(PRIVATE_SOURCES))\
+	    $$(addprefix -m ,$$(PRIVATE_INSTALL_MAP))\
+	    $$(addprefix -t ,$$(PRIVATE_TARGETS))\
+	    $$(addprefix -i ,$$(PRIVATE_INSTALLED))\
+	    $$(addprefix -r ,$$(PRIVATE_PATH)),\
+	    $$(PRIVATE_ARGUMENT_FILE))
 	OUT_DIR=$(OUT_DIR) $(BUILD_LICENSE_METADATA) \
-	  $$(addprefix -mt ,$$(PRIVATE_MODULE_TYPE)) \
-	  $$(addprefix -mc ,$$(PRIVATE_MODULE_CLASS)) \
-	  $$(addprefix -k ,$$(PRIVATE_KINDS)) \
-	  $$(addprefix -c ,$$(PRIVATE_CONDITIONS)) \
-	  $$(addprefix -n ,$$(PRIVATE_NOTICES)) \
-	  $$(addprefix -d ,$$(PRIVATE_NOTICE_DEPS)) \
-	  $$(addprefix -s ,$$(PRIVATE_SOURCES)) \
-	  $$(addprefix -m ,$$(PRIVATE_INSTALL_MAP)) \
-	  $$(addprefix -t ,$$(PRIVATE_TARGETS)) \
-	  $$(addprefix -i ,$$(PRIVATE_INSTALLED)) \
 	  $$(if $$(PRIVATE_IS_CONTAINER),-is_container) \
 	  -p '$$(PRIVATE_PACKAGE_NAME)' \
-	  $$(addprefix -r ,$$(PRIVATE_PATH)) \
+	  @$$(PRIVATE_ARGUMENT_FILE) \
 	  -o $$@
 endef
 
@@ -693,22 +698,27 @@
 $(_meta): PRIVATE_IS_CONTAINER := $(ALL_NON_MODULES.$(_tgt).IS_CONTAINER)
 $(_meta): PRIVATE_PACKAGE_NAME := $(strip $(ALL_NON_MODULES.$(_tgt).LICENSE_PACKAGE_NAME))
 $(_meta): PRIVATE_INSTALL_MAP := $(strip $(_install_map))
+$(_meta): PRIVATE_ARGUMENT_FILE := $(call intermediates-dir-for,PACKAGING,notice)/$(_meta)/arguments
 $(_meta): $(BUILD_LICENSE_METADATA)
 $(_meta) : $(foreach d,$(_deps),$(call word-colon,1,$(d))) $(foreach n,$(_notices),$(call word-colon,1,$(n)) )
 	rm -f $$@
 	mkdir -p $$(dir $$@)
+	mkdir -p $$(dir $$(PRIVATE_ARGUMENT_FILE))
+	$$(call dump-words-to-file,\
+	    $$(addprefix -k ,$$(PRIVATE_KINDS))\
+	    $$(addprefix -c ,$$(PRIVATE_CONDITIONS))\
+	    $$(addprefix -n ,$$(PRIVATE_NOTICES))\
+	    $$(addprefix -d ,$$(PRIVATE_NOTICE_DEPS))\
+	    $$(addprefix -s ,$$(PRIVATE_SOURCES))\
+	    $$(addprefix -m ,$$(PRIVATE_INSTALL_MAP))\
+	    $$(addprefix -t ,$$(PRIVATE_TARGETS))\
+	    $$(addprefix -r ,$$(PRIVATE_PATH)),\
+	    $$(PRIVATE_ARGUMENT_FILE))
 	OUT_DIR=$(OUT_DIR) $(BUILD_LICENSE_METADATA) \
           -mt raw -mc unknown \
-	  $$(addprefix -k ,$$(PRIVATE_KINDS)) \
-	  $$(addprefix -c ,$$(PRIVATE_CONDITIONS)) \
-	  $$(addprefix -n ,$$(PRIVATE_NOTICES)) \
-	  $$(addprefix -d ,$$(PRIVATE_NOTICE_DEPS)) \
-	  $$(addprefix -s ,$$(PRIVATE_SOURCES)) \
-	  $$(addprefix -m ,$$(PRIVATE_INSTALL_MAP)) \
-	  $$(addprefix -t ,$$(PRIVATE_TARGETS)) \
 	  $$(if $$(PRIVATE_IS_CONTAINER),-is_container) \
-	  -p '$$(PRIVATE_PACKAGE_NAME)' \
 	  $$(addprefix -r ,$$(PRIVATE_PATH)) \
+	  @$$(PRIVATE_ARGUMENT_FILE) \
 	  -o $$@
 
 endef
@@ -2368,7 +2378,59 @@
         @$(call emit-line,$(wordlist 12001,12500,$(1)),$(2))
         @$(call emit-line,$(wordlist 12501,13000,$(1)),$(2))
         @$(call emit-line,$(wordlist 13001,13500,$(1)),$(2))
-        @$(if $(wordlist 13501,13502,$(1)),$(error Too many words ($(words $(1)))))
+        @$(call emit-line,$(wordlist 13501,14000,$(1)),$(2))
+        @$(call emit-line,$(wordlist 14001,14500,$(1)),$(2))
+        @$(call emit-line,$(wordlist 14501,15000,$(1)),$(2))
+        @$(call emit-line,$(wordlist 15001,15500,$(1)),$(2))
+        @$(call emit-line,$(wordlist 15501,16000,$(1)),$(2))
+        @$(call emit-line,$(wordlist 16001,16500,$(1)),$(2))
+        @$(call emit-line,$(wordlist 16501,17000,$(1)),$(2))
+        @$(call emit-line,$(wordlist 17001,17500,$(1)),$(2))
+        @$(call emit-line,$(wordlist 17501,18000,$(1)),$(2))
+        @$(call emit-line,$(wordlist 18001,18500,$(1)),$(2))
+        @$(call emit-line,$(wordlist 18501,19000,$(1)),$(2))
+        @$(call emit-line,$(wordlist 19001,19500,$(1)),$(2))
+        @$(call emit-line,$(wordlist 19501,20000,$(1)),$(2))
+        @$(call emit-line,$(wordlist 20001,20500,$(1)),$(2))
+        @$(call emit-line,$(wordlist 20501,21000,$(1)),$(2))
+        @$(call emit-line,$(wordlist 21001,21500,$(1)),$(2))
+        @$(call emit-line,$(wordlist 21501,22000,$(1)),$(2))
+        @$(call emit-line,$(wordlist 22001,22500,$(1)),$(2))
+        @$(call emit-line,$(wordlist 22501,23000,$(1)),$(2))
+        @$(call emit-line,$(wordlist 23001,23500,$(1)),$(2))
+        @$(call emit-line,$(wordlist 23501,24000,$(1)),$(2))
+        @$(call emit-line,$(wordlist 24001,24500,$(1)),$(2))
+        @$(call emit-line,$(wordlist 24501,25000,$(1)),$(2))
+        @$(call emit-line,$(wordlist 25001,25500,$(1)),$(2))
+        @$(call emit-line,$(wordlist 25501,26000,$(1)),$(2))
+        @$(call emit-line,$(wordlist 26001,26500,$(1)),$(2))
+        @$(call emit-line,$(wordlist 26501,27000,$(1)),$(2))
+        @$(call emit-line,$(wordlist 27001,27500,$(1)),$(2))
+        @$(call emit-line,$(wordlist 27501,28000,$(1)),$(2))
+        @$(call emit-line,$(wordlist 28001,28500,$(1)),$(2))
+        @$(call emit-line,$(wordlist 28501,29000,$(1)),$(2))
+        @$(call emit-line,$(wordlist 29001,29500,$(1)),$(2))
+        @$(call emit-line,$(wordlist 29501,30000,$(1)),$(2))
+        @$(call emit-line,$(wordlist 30001,30500,$(1)),$(2))
+        @$(call emit-line,$(wordlist 30501,31000,$(1)),$(2))
+        @$(call emit-line,$(wordlist 31001,31500,$(1)),$(2))
+        @$(call emit-line,$(wordlist 31501,32000,$(1)),$(2))
+        @$(call emit-line,$(wordlist 32001,32500,$(1)),$(2))
+        @$(call emit-line,$(wordlist 32501,33000,$(1)),$(2))
+        @$(call emit-line,$(wordlist 33001,33500,$(1)),$(2))
+        @$(call emit-line,$(wordlist 33501,34000,$(1)),$(2))
+        @$(call emit-line,$(wordlist 34001,34500,$(1)),$(2))
+        @$(call emit-line,$(wordlist 34501,35000,$(1)),$(2))
+        @$(call emit-line,$(wordlist 35001,35500,$(1)),$(2))
+        @$(call emit-line,$(wordlist 35501,36000,$(1)),$(2))
+        @$(call emit-line,$(wordlist 36001,36500,$(1)),$(2))
+        @$(call emit-line,$(wordlist 36501,37000,$(1)),$(2))
+        @$(call emit-line,$(wordlist 37001,37500,$(1)),$(2))
+        @$(call emit-line,$(wordlist 37501,38000,$(1)),$(2))
+        @$(call emit-line,$(wordlist 38001,38500,$(1)),$(2))
+        @$(call emit-line,$(wordlist 38501,39000,$(1)),$(2))
+        @$(call emit-line,$(wordlist 39001,39500,$(1)),$(2))
+        @$(if $(wordlist 39501,39502,$(1)),$(error Too many words ($(words $(1)))))
 endef
 # Return jar arguments to compress files in a given directory
 # $(1): directory
@@ -3111,6 +3173,50 @@
 fi
 endef
 
+# Copy an unstripped binary to the symbols directory while also extracting
+# a hash mapping to the mapping directory.
+# $(1): unstripped intermediates file
+# $(2): path in symbols directory
+define copy-unstripped-elf-file-with-mapping
+$(call _copy-symbols-file-with-mapping,$(1),$(2),\
+  elf,$(patsubst $(TARGET_OUT_UNSTRIPPED)/%,$(call intermediates-dir-for,PACKAGING,elf_symbol_mapping)/%,$(2).textproto))
+endef
+
+# Copy an R8 dictionary to the packaging directory while also extracting
+# a hash mapping to the mapping directory.
+# $(1): unstripped intermediates file
+# $(2): path in packaging directory
+# $(3): path in mappings packaging directory
+define copy-r8-dictionary-file-with-mapping
+$(call _copy-symbols-file-with-mapping,$(1),$(2),r8,$(3))
+endef
+
+# Copy an unstripped binary or R8 dictionary to the symbols directory
+# while also extracting a hash mapping to the mapping directory.
+# $(1): unstripped intermediates file
+# $(2): path in symbols directory
+# $(3): file type (elf or r8)
+# $(4): path in the mappings directory
+define _copy-symbols-file-with-mapping
+$(2): .KATI_IMPLICIT_OUTPUTS := $(4)
+$(2): $(SYMBOLS_MAP)
+$(2): $(1)
+	@echo "Copy symbols with mapping: $$@"
+	$$(copy-file-to-target)
+	$(SYMBOLS_MAP) -$(strip $(3)) $(2) -write_if_changed $(4)
+.KATI_RESTAT: $(2)
+endef
+
+# Returns the directory to copy proguard dictionaries into
+define local-proguard-dictionary-directory
+$(call intermediates-dir-for,PACKAGING,proguard_dictionary)/out/target/common/obj/$(LOCAL_MODULE_CLASS)/$(LOCAL_MODULE)_intermediates
+endef
+
+# Returns the directory to copy proguard dictionary mappings into
+define local-proguard-dictionary-mapping-directory
+$(call intermediates-dir-for,PACKAGING,proguard_dictionary_mapping)/out/target/common/obj/$(LOCAL_MODULE_CLASS)/$(LOCAL_MODULE)_intermediates
+endef
+
 
 ###########################################################
 ## Commands to call R8
diff --git a/core/dynamic_binary.mk b/core/dynamic_binary.mk
index 52d7ddc..0d2cd7f 100644
--- a/core/dynamic_binary.mk
+++ b/core/dynamic_binary.mk
@@ -55,9 +55,7 @@
 endif
 symbolic_input := $(inject_module)
 symbolic_output := $(my_unstripped_path)/$(my_installed_module_stem)
-$(symbolic_output) : $(symbolic_input)
-	@echo "target Symbolic: $(PRIVATE_MODULE) ($@)"
-	$(copy-file-to-target)
+$(eval $(call copy-unstripped-elf-file-with-mapping,$(symbolic_input),$(symbolic_output)))
 
 ###########################################################
 ## Store breakpad symbols
diff --git a/core/jacoco.mk b/core/jacoco.mk
index e8c74ee..7099526 100644
--- a/core/jacoco.mk
+++ b/core/jacoco.mk
@@ -50,6 +50,7 @@
 	unzip -qDD $(PRIVATE_FULL_CLASSES_PRE_JACOCO_JAR) \
 	  -d $(PRIVATE_UNZIPPED_PATH) \
 	  $(PRIVATE_INCLUDE_ARGS)
+	chmod -R =rwX $(PRIVATE_UNZIPPED_PATH)
 	(cd $(PRIVATE_UNZIPPED_PATH) && rm -rf $(PRIVATE_EXCLUDE_ARGS))
 	(cd $(PRIVATE_UNZIPPED_PATH) && find -not -name "*.class" -type f -exec rm {} \;)
 	touch $(PRIVATE_UNZIPPED_TIMESTAMP_PATH)
diff --git a/core/main.mk b/core/main.mk
index 72958da..6a2407c 100644
--- a/core/main.mk
+++ b/core/main.mk
@@ -1761,13 +1761,13 @@
   endif
 
   $(PROGUARD_DICT_ZIP) : $(apps_only_installed_files)
-  $(call dist-for-goals,apps_only, $(PROGUARD_DICT_ZIP))
+  $(call dist-for-goals,apps_only, $(PROGUARD_DICT_ZIP) $(PROGUARD_DICT_MAPPING))
 
   $(PROGUARD_USAGE_ZIP) : $(apps_only_installed_files)
   $(call dist-for-goals,apps_only, $(PROGUARD_USAGE_ZIP))
 
   $(SYMBOLS_ZIP) : $(apps_only_installed_files)
-  $(call dist-for-goals,apps_only, $(SYMBOLS_ZIP))
+  $(call dist-for-goals,apps_only, $(SYMBOLS_ZIP) $(SYMBOLS_MAPPING))
 
   $(COVERAGE_ZIP) : $(apps_only_installed_files)
   $(call dist-for-goals,apps_only, $(COVERAGE_ZIP))
@@ -1818,7 +1818,9 @@
     $(INTERNAL_OTA_PARTIAL_PACKAGE_TARGET) \
     $(INTERNAL_OTA_RETROFIT_DYNAMIC_PARTITIONS_PACKAGE_TARGET) \
     $(SYMBOLS_ZIP) \
+    $(SYMBOLS_MAPPING) \
     $(PROGUARD_DICT_ZIP) \
+    $(PROGUARD_DICT_MAPPING) \
     $(PROGUARD_USAGE_ZIP) \
     $(COVERAGE_ZIP) \
     $(INSTALLED_FILES_FILE) \
@@ -1962,6 +1964,7 @@
 $(call dist-for-goals,sdk, \
     $(ALL_SDK_TARGETS) \
     $(SYMBOLS_ZIP) \
+    $(SYMBOLS_MAPPING) \
     $(COVERAGE_ZIP) \
     $(APPCOMPAT_ZIP) \
     $(INSTALLED_BUILD_PROP_TARGET) \
diff --git a/core/product_config.rbc b/core/product_config.rbc
index 0e7dbf1..81f9689 100644
--- a/core/product_config.rbc
+++ b/core/product_config.rbc
@@ -385,7 +385,7 @@
 
 def __words(string_or_list):
     if type(string_or_list) == "list":
-        return string_or_list
+        string_or_list = " ".join(string_or_list)
     return _mkstrip(string_or_list).split()
 
 # Handle manipulation functions.
@@ -439,10 +439,6 @@
     """Returns basename."""
     return path.rsplit("/",1)[-1]
 
-def __dir(path):
-    """Returns dirname."""
-    return path.rsplit("/",1)[0]
-
 def _board_platform_in(g, string_or_list):
     """Returns true if board is in the list."""
     board = g.get("TARGET_BOARD_PLATFORM","")
@@ -504,10 +500,15 @@
     Return:
         list of words
     """
-    rex = __mk2regex(__words(pattern))
+    patterns = [__mkparse_pattern(x) for x in __words(pattern)]
     res = []
     for w in __words(text):
-        if not _regex_match(rex, w):
+        match = False
+        for p in patterns:
+            if __mkpattern_matches(p, w):
+                match = True
+                break
+        if not match:
             res.append(w)
     return res
 
@@ -519,13 +520,22 @@
          which stands for any sequence of characters.
         text: string or list of words.
     """
-    rex = __mk2regex(__words(pattern))
+    patterns = [__mkparse_pattern(x) for x in __words(pattern)]
     res = []
     for w in __words(text):
-        if _regex_match(rex, w):
-            res.append(w)
+        for p in patterns:
+            if __mkpattern_matches(p, w):
+                res.append(w)
+                break
     return res
 
+def _dir(paths):
+    """Equivalent to the GNU make function $(dir).
+
+    Returns the folder of the file for each path in paths.
+    """
+    return " ".join([w.rsplit("/",1)[0] for w in __words(paths)])
+
 def _notdir(paths):
     """Equivalent to the GNU make function $(notdir).
 
@@ -533,15 +543,6 @@
     """
     return " ".join([__base(w) for w in __words(paths)])
 
-def __mk2regex(words):
-    """Returns regular expression equivalent to Make pattern."""
-
-    # TODO(asmundak): this will mishandle '\%'
-    return "^(" + "|".join([w.replace("%", ".*", 1) for w in words if w]) + ")$"
-
-def _regex_match(regex, w):
-    return rblf_regex(regex, w)
-
 def _require_artifacts_in_path(paths, allowed_paths):
     """TODO."""
     pass
@@ -598,7 +599,11 @@
 
 
 def __mkparse_pattern(pattern):
-    """Parses Make's patsubst pattern."""
+    """Parses Make's patsubst pattern.
+
+    This is equivalent to pattern.split('%', 1), except it
+    also takes into account escaping the % symbols.
+    """
     in_escape = False
     res = []
     acc = ""
@@ -618,6 +623,21 @@
     res.append(acc)
     return res
 
+def __mkpattern_matches(pattern, word):
+    """Returns if a pattern matches a given word.
+
+    The pattern must be a list of strings of length at most 2.
+    This checks if word is either equal to the pattern or
+    starts/ends with the two parts of the pattern.
+    """
+    if len(pattern) > 2:
+        fail("Pattern can have at most 2 components")
+    elif len(pattern) == 1:
+        return pattern[0]==word
+    else:
+        return ((len(word) >= len(pattern[0])+len(pattern[1]))
+            and word.startswith(pattern[0])
+            and word.endswith(pattern[1]))
 
 def __mkpatsubst_word(parsed_pattern,parsed_subst, word):
     (before, after) = parsed_pattern
@@ -639,12 +659,11 @@
     $1 in regex terms).
     """
     parsed_pattern = __mkparse_pattern(pattern)
-    words = s if type(s) == "list" else _mkstrip(s).split(" ")
     if len(parsed_pattern) == 1:
-        out_words = [ replacement if x == pattern else x for x in words]
+        out_words = [ replacement if x == pattern else x for x in __words(s)]
     else:
         parsed_replacement = __mkparse_pattern(replacement)
-        out_words = [__mkpatsubst_word(parsed_pattern, parsed_replacement, x) for x in words]
+        out_words = [__mkpatsubst_word(parsed_pattern, parsed_replacement, x) for x in __words(s)]
     return out_words if type(s) == "list" else " ".join(out_words)
 
 
@@ -740,7 +759,7 @@
     copy_files = _copy_files,
     copy_if_exists = _copy_if_exists,
     cfg = __h_cfg,
-    dir = __dir,
+    dir = _dir,
     enforce_product_packages_exist = _enforce_product_packages_exist,
     expand_wildcard = _expand_wildcard,
     file_exists = rblf_file_exists,
diff --git a/core/soong_app_prebuilt.mk b/core/soong_app_prebuilt.mk
index 006e1dc..d771d22 100644
--- a/core/soong_app_prebuilt.mk
+++ b/core/soong_app_prebuilt.mk
@@ -100,18 +100,24 @@
 endif
 
 ifdef LOCAL_SOONG_PROGUARD_DICT
+  my_proguard_dictionary_directory := $(local-proguard-dictionary-directory)
+  my_proguard_dictionary_mapping_directory := $(local-proguard-dictionary-mapping-directory)
   $(eval $(call copy-one-file,$(LOCAL_SOONG_PROGUARD_DICT),\
     $(intermediates.COMMON)/proguard_dictionary))
-  $(eval $(call copy-one-file,$(LOCAL_SOONG_PROGUARD_DICT),\
-    $(call local-packaging-dir,proguard_dictionary)/proguard_dictionary))
+  $(eval $(call copy-r8-dictionary-file-with-mapping,\
+    $(LOCAL_SOONG_PROGUARD_DICT),\
+    $(my_proguard_dictionary_directory)/proguard_dictionary,\
+    $(my_proguard_dictionary_mapping_directory)/proguard_dictionary.textproto))
   $(eval $(call copy-one-file,$(LOCAL_SOONG_CLASSES_JAR),\
-    $(call local-packaging-dir,proguard_dictionary)/classes.jar))
+    $(my_proguard_dictionary_directory)/classes.jar))
   $(call add-dependency,$(LOCAL_BUILT_MODULE),\
     $(intermediates.COMMON)/proguard_dictionary)
   $(call add-dependency,$(LOCAL_BUILT_MODULE),\
-    $(call local-packaging-dir,proguard_dictionary)/proguard_dictionary)
+    $(my_proguard_dictionary_directory)/proguard_dictionary)
   $(call add-dependency,$(LOCAL_BUILT_MODULE),\
-    $(call local-packaging-dir,proguard_dictionary)/classes.jar)
+    $(my_proguard_dictionary_mapping_directory)/proguard_dictionary.textproto)
+  $(call add-dependency,$(LOCAL_BUILT_MODULE),\
+    $(my_proguard_dictionary_directory)/classes.jar)
 endif
 
 ifdef LOCAL_SOONG_PROGUARD_USAGE_ZIP
diff --git a/core/soong_cc_rust_prebuilt.mk b/core/soong_cc_rust_prebuilt.mk
index ca52374..7a177ff 100644
--- a/core/soong_cc_rust_prebuilt.mk
+++ b/core/soong_cc_rust_prebuilt.mk
@@ -184,7 +184,7 @@
       # drop /root as /root is mounted as /
       my_unstripped_path := $(patsubst $(TARGET_OUT_UNSTRIPPED)/root/%,$(TARGET_OUT_UNSTRIPPED)/%, $(my_unstripped_path))
       symbolic_output := $(my_unstripped_path)/$(my_installed_module_stem)
-      $(eval $(call copy-one-file,$(LOCAL_SOONG_UNSTRIPPED_BINARY),$(symbolic_output)))
+      $(eval $(call copy-unstripped-elf-file-with-mapping,$(LOCAL_SOONG_UNSTRIPPED_BINARY),$(symbolic_output)))
       $(LOCAL_BUILT_MODULE): | $(symbolic_output)
 
       ifeq ($(BREAKPAD_GENERATE_SYMBOLS),true)
diff --git a/core/soong_java_prebuilt.mk b/core/soong_java_prebuilt.mk
index b819cdc..a8f475f 100644
--- a/core/soong_java_prebuilt.mk
+++ b/core/soong_java_prebuilt.mk
@@ -62,18 +62,24 @@
 endif
 
 ifdef LOCAL_SOONG_PROGUARD_DICT
+  my_proguard_dictionary_directory := $(local-proguard-dictionary-directory)
+  my_proguard_dictionary_mapping_directory := $(local-proguard-dictionary-mapping-directory)
   $(eval $(call copy-one-file,$(LOCAL_SOONG_PROGUARD_DICT),\
     $(intermediates.COMMON)/proguard_dictionary))
-  $(eval $(call copy-one-file,$(LOCAL_SOONG_PROGUARD_DICT),\
-    $(call local-packaging-dir,proguard_dictionary)/proguard_dictionary))
+  $(eval $(call copy-r8-dictionary-file-with-mapping,\
+    $(LOCAL_SOONG_PROGUARD_DICT),\
+    $(my_proguard_dictionary_directory)/proguard_dictionary,\
+    $(my_proguard_dictionary_mapping_directory)/proguard_dictionary.textproto))
   $(eval $(call copy-one-file,$(LOCAL_SOONG_CLASSES_JAR),\
-    $(call local-packaging-dir,proguard_dictionary)/classes.jar))
+    $(my_proguard_dictionary_directory)/classes.jar))
   $(call add-dependency,$(common_javalib.jar),\
     $(intermediates.COMMON)/proguard_dictionary)
   $(call add-dependency,$(common_javalib.jar),\
-    $(call local-packaging-dir,proguard_dictionary)/proguard_dictionary)
+    $(my_proguard_dictionary_directory)/proguard_dictionary)
   $(call add-dependency,$(common_javalib.jar),\
-    $(call local-packaging-dir,proguard_dictionary)/classes.jar)
+    $(my_proguard_dictionary_mapping_directory)/proguard_dictionary.textproto)
+  $(call add-dependency,$(common_javalib.jar),\
+    $(my_proguard_dictionary_directory)/classes.jar)
 endif
 
 ifdef LOCAL_SOONG_PROGUARD_USAGE_ZIP
diff --git a/tests/run.rbc b/tests/run.rbc
index a9b1673..82a5e72 100644
--- a/tests/run.rbc
+++ b/tests/run.rbc
@@ -53,7 +53,11 @@
 assert_eq(["from/a:to/a", "from/b:to/b"], rblf.product_copy_files_by_pattern("from/%", "to/%", "a b"))
 
 assert_eq([], rblf.filter(["a", "", "b"], "f"))
-assert_eq(["", "b"], rblf.filter_out(["a", "" ], ["a", "", "b"] ))
+assert_eq(["ab%c", "axyzb%c"], rblf.filter(["a%b%c"], ["ab%c", "axyzb%c", "axyzb%cd", "axyzbwc"]))
+assert_eq(["abc", "bcd"], rblf.filter(["a%", "b%"], ["abc", "def", "bcd", "xabc"]))
+assert_eq(["b", "ab"], rblf.filter_out(["a", "" ], ["a", "", "b", "ab"]))
+assert_eq(["c"], rblf.filter_out(["a", "b" ], ["a", "b", "c"]))
+assert_eq(["c"], rblf.filter_out(["a%", "b" ], ["abc", "b", "c"]))
 
 assert_eq("foo.c no_folder", rblf.notdir(["src/foo.c", "no_folder"]))
 assert_eq("foo.c no_folder", rblf.notdir("src/foo.c no_folder"))
diff --git a/tools/checkowners.py b/tools/checkowners.py
index d6853d8..f037321 100755
--- a/tools/checkowners.py
+++ b/tools/checkowners.py
@@ -5,8 +5,8 @@
 import argparse
 import re
 import sys
-import urllib
-import urllib2
+import urllib.request, urllib.parse, urllib.error
+import urllib.request, urllib.error, urllib.parse
 
 parser = argparse.ArgumentParser(description='Check OWNERS file syntax')
 parser.add_argument('-v', '--verbose', dest='verbose',
@@ -25,15 +25,15 @@
 
 def echo(msg):
   if args.verbose:
-    print msg
+    print(msg)
 
 
 def find_address(address):
   if address not in checked_addresses:
     request = (gerrit_server + '/accounts/?n=1&q=email:'
-               + urllib.quote(address))
+               + urllib.parse.quote(address))
     echo('Checking email address: ' + address)
-    result = urllib2.urlopen(request).read()
+    result = urllib.request.urlopen(request).read()
     checked_addresses[address] = result.find('"_account_id":') >= 0
     if checked_addresses[address]:
       echo('Found email address: ' + address)
@@ -43,7 +43,7 @@
 def check_address(fname, num, address):
   if find_address(address):
     return 0
-  print '%s:%d: ERROR: unknown email address: %s' % (fname, num, address)
+  print('%s:%d: ERROR: unknown email address: %s' % (fname, num, address))
   return 1
 
 
@@ -72,7 +72,7 @@
       stripped_line = re.sub('#.*$', '', line).strip()
       if not patterns.match(stripped_line):
         error += 1
-        print '%s:%d: ERROR: unknown line [%s]' % (fname, num, line.strip())
+        print('%s:%d: ERROR: unknown line [%s]' % (fname, num, line.strip()))
       elif args.check_address:
         if perfile_pattern.match(stripped_line):
           for addr in perfile_pattern.match(stripped_line).group(1).split(','):
diff --git a/tools/rbcrun/host.go b/tools/rbcrun/host.go
index 4915de9..c6e89f0 100644
--- a/tools/rbcrun/host.go
+++ b/tools/rbcrun/host.go
@@ -20,7 +20,6 @@
 	"os"
 	"os/exec"
 	"path/filepath"
-	"regexp"
 	"strings"
 
 	"go.starlark.net/starlark"
@@ -125,23 +124,6 @@
 	return starlark.True, nil
 }
 
-// regexMatch(pattern, s) returns True if s matches pattern (a regex)
-func regexMatch(_ *starlark.Thread, b *starlark.Builtin, args starlark.Tuple,
-	kwargs []starlark.Tuple) (starlark.Value, error) {
-	var pattern, s string
-	if err := starlark.UnpackPositionalArgs(b.Name(), args, kwargs, 2, &pattern, &s); err != nil {
-		return starlark.None, err
-	}
-	match, err := regexp.MatchString(pattern, s)
-	if err != nil {
-		return starlark.None, err
-	}
-	if match {
-		return starlark.True, nil
-	}
-	return starlark.False, nil
-}
-
 // wildcard(pattern, top=None) expands shell's glob pattern. If 'top' is present,
 // the 'top/pattern' is globbed and then 'top/' prefix is removed.
 func wildcard(_ *starlark.Thread, b *starlark.Builtin, args starlark.Tuple,
@@ -291,8 +273,6 @@
 		"rblf_file_exists": starlark.NewBuiltin("rblf_file_exists", fileExists),
 		// To convert find-copy-subdir and product-copy-files-by pattern
 		"rblf_find_files": starlark.NewBuiltin("rblf_find_files", find),
-		// To convert makefile's $(filter ...)/$(filter-out)
-		"rblf_regex": starlark.NewBuiltin("rblf_regex", regexMatch),
 		// To convert makefile's $(shell cmd)
 		"rblf_shell": starlark.NewBuiltin("rblf_shell", shell),
 		// Output to stderr
diff --git a/tools/rbcrun/host_test.go b/tools/rbcrun/host_test.go
index 3be5ee6..97f6ce9 100644
--- a/tools/rbcrun/host_test.go
+++ b/tools/rbcrun/host_test.go
@@ -147,10 +147,6 @@
 	}
 }
 
-func TestRegex(t *testing.T) {
-	exerciseStarlarkTestFile(t, "testdata/regex.star")
-}
-
 func TestShell(t *testing.T) {
 	if err := os.Setenv("TEST_DATA_DIR", dataDir()); err != nil {
 		t.Fatal(err)
diff --git a/tools/rbcrun/testdata/regex.star b/tools/rbcrun/testdata/regex.star
deleted file mode 100644
index 04e1d42..0000000
--- a/tools/rbcrun/testdata/regex.star
+++ /dev/null
@@ -1,13 +0,0 @@
-# Tests rblf_regex
-load("assert.star", "assert")
-
-
-def test():
-    pattern = "^(foo.*bar|abc.*d|1.*)$"
-    for w in ("foobar", "fooxbar", "abcxd", "123"):
-        assert.true(rblf_regex(pattern, w), "%s should match %s" % (w, pattern))
-    for w in ("afoobar", "abcde"):
-        assert.true(not rblf_regex(pattern, w), "%s should not match %s" % (w, pattern))
-
-
-test()