diff --git a/Android.bp b/Android.bp
index 467f80e..5909f8d 100644
--- a/Android.bp
+++ b/Android.bp
@@ -388,6 +388,21 @@
     stem: "apex_sepolicy.cil",
 }
 
+se_policy_cil {
+    name: "decompiled_sepolicy-without_apex.cil",
+    src: ":precompiled_sepolicy-without_apex",
+    decompile_binary: true,
+}
+
+se_policy_cil {
+    name: "apex_sepolicy-decompiled.cil",
+    src: ":precompiled_sepolicy",
+    decompile_binary: true,
+    filter_out: [":decompiled_sepolicy-without_apex.cil"],
+    additional_cil_files: ["com.android.sepolicy/33/definitions/definitions.cil"],
+    secilc_check: false,
+}
+
 // userdebug_plat_policy.conf - the userdebug version plat_sepolicy.cil
 se_policy_conf {
     name: "userdebug_plat_sepolicy.conf",
@@ -896,6 +911,50 @@
     },
 }
 
+precompiled_se_policy_binary {
+    name: "precompiled_sepolicy-without_apex",
+    srcs: [
+        ":plat_sepolicy.cil",
+        ":plat_pub_versioned.cil",
+        ":system_ext_sepolicy.cil",
+        ":product_sepolicy.cil",
+        ":vendor_sepolicy.cil",
+        ":odm_sepolicy.cil",
+    ],
+    soong_config_variables: {
+        BOARD_USES_ODMIMAGE: {
+            device_specific: true,
+            conditions_default: {
+                vendor: true,
+            },
+        },
+        IS_TARGET_MIXED_SEPOLICY: {
+            ignore_neverallow: true,
+        },
+        MIXED_SEPOLICY_VERSION: {
+            srcs: [
+                ":plat_%s.cil",
+                ":system_ext_%s.cil",
+                ":product_%s.cil",
+            ],
+            conditions_default: {
+                srcs: [
+                    ":plat_mapping_file",
+                    ":system_ext_mapping_file",
+                    ":product_mapping_file",
+                ],
+            },
+        },
+    },
+    required: [
+        "sepolicy_neverallows",
+        "sepolicy_neverallows_vendor",
+    ],
+    dist: {
+        targets: ["base-sepolicy-files-for-mapping"],
+    },
+}
+
 // policy for recovery
 se_policy_conf {
     name: "recovery_sepolicy.conf",
diff --git a/build/soong/policy.go b/build/soong/policy.go
index 3946a04..4161bb3 100644
--- a/build/soong/policy.go
+++ b/build/soong/policy.go
@@ -287,6 +287,10 @@
 	// Policy file to be compiled to cil file.
 	Src *string `android:"path"`
 
+	// If true, the input policy file is a binary policy that will be decompiled to a cil file.
+	// Defaults to false.
+	Decompile_binary *bool
+
 	// Additional cil files to be added in the end of the output. This is to support workarounds
 	// which are not supported by the policy language.
 	Additional_cil_files []string `android:"path"`
@@ -338,17 +342,15 @@
 func (c *policyCil) compileConfToCil(ctx android.ModuleContext, conf android.Path) android.OutputPath {
 	cil := android.PathForModuleOut(ctx, c.stem()).OutputPath
 	rule := android.NewRuleBuilder(pctx, ctx)
-	rule.Command().BuiltTool("checkpolicy").
+	checkpolicyCmd := rule.Command().BuiltTool("checkpolicy").
 		Flag("-C"). // Write CIL
 		Flag("-M"). // Enable MLS
 		FlagWithArg("-c ", strconv.Itoa(PolicyVers)).
 		FlagWithOutput("-o ", cil).
 		Input(conf)
 
-	if len(c.properties.Additional_cil_files) > 0 {
-		rule.Command().Text("cat").
-			Inputs(android.PathsForModuleSrc(ctx, c.properties.Additional_cil_files)).
-			Text(">> ").Output(cil)
+	if proptools.Bool(c.properties.Decompile_binary) {
+		checkpolicyCmd.Flag("-b") // Read binary
 	}
 
 	if len(c.properties.Filter_out) > 0 {
@@ -359,6 +361,12 @@
 			FlagWithOutput("-t ", cil)
 	}
 
+	if len(c.properties.Additional_cil_files) > 0 {
+		rule.Command().Text("cat").
+			Inputs(android.PathsForModuleSrc(ctx, c.properties.Additional_cil_files)).
+			Text(">> ").Output(cil)
+	}
+
 	if proptools.Bool(c.properties.Remove_line_marker) {
 		rule.Command().Text("grep -v").
 			Text(proptools.ShellEscape(";;")).
diff --git a/com.android.sepolicy/33/definitions/definitions.cil b/com.android.sepolicy/33/definitions/definitions.cil
new file mode 100644
index 0000000..9b35268
--- /dev/null
+++ b/com.android.sepolicy/33/definitions/definitions.cil
@@ -0,0 +1,8 @@
+(sid apex)
+(sidorder (apex))
+
+(classorder (file))
+
+(type shell)
+(type sepolicy_test_file)
+(class file (ioctl read getattr lock map open watch watch_reads))