[Ravenwood] Stop using jarjar for framework-minus-apex

Jarjar turned out to be slow (40 seconds on my PC) on
framework-minus-apex.

Since we're only doing a simple rename, let's just do it with HSG.

Bug: 313930116
Flag: EXEMPT host side test change only
Test: $ANDROID_BUILD_TOP/frameworks/base/ravenwood/scripts/run-ravenwood-tests.sh
Tst: m 100-framework-minus-apex.ravenwood # it shouldn't run jarjar
(cherry picked from https://googleplex-android-review.googlesource.com/q/commit:491caffed0f5f2b9e1a66cd1f01357b6749690c3)
Merged-In: Id6d775d028b3c28b075210abbb0236c7c76eda63
Change-Id: Id6d775d028b3c28b075210abbb0236c7c76eda63
diff --git a/Ravenwood.bp b/Ravenwood.bp
index 87f1124..cebeb18 100644
--- a/Ravenwood.bp
+++ b/Ravenwood.bp
@@ -159,7 +159,8 @@
         "framework-minus-apex.ravenwood",
     ],
     sdk_version: "core_platform",
-    jarjar_rules: ":ravenwood-framework-jarjar-rules",
+    // See b/313930116. Jarjar is too slow on this jar. We use HostStubGen to do the rename.
+    // jarjar_rules: ":ravenwood-framework-jarjar-rules",
 }
 
 java_genrule {
diff --git a/ravenwood/texts/ravenwood-framework-jarjar-rules.txt b/ravenwood/texts/ravenwood-framework-jarjar-rules.txt
index 2eeb904..afef564 100644
--- a/ravenwood/texts/ravenwood-framework-jarjar-rules.txt
+++ b/ravenwood/texts/ravenwood-framework-jarjar-rules.txt
@@ -1,2 +1 @@
-# To avoid VerifyError on nano proto files (b/324063814)
-rule com.**.nano.**   devicenano.@0
+# Applying jarjar on framework-minux-apex is too slow, so we don't use jarjar for now. b/313930116
\ No newline at end of file
diff --git a/ravenwood/texts/ravenwood-framework-policies.txt b/ravenwood/texts/ravenwood-framework-policies.txt
index 9d29a05..4012bdc 100644
--- a/ravenwood/texts/ravenwood-framework-policies.txt
+++ b/ravenwood/texts/ravenwood-framework-policies.txt
@@ -9,6 +9,11 @@
 # Keep all sysprops generated code implementations
 class :sysprops keepclass
 
+# To avoid VerifyError on nano proto files (b/324063814), we rename nano proto classes.
+# Note: The "rename" directive must use shashes (/) as a package name separator.
+rename com/.*/nano/   devicenano/
+rename android/.*/nano/   devicenano/
+
 # Exported to Mainline modules; cannot use annotations
 class com.android.internal.util.FastXmlSerializer keepclass
 class com.android.internal.util.FileRotator keepclass
diff --git a/tools/hoststubgen/hoststubgen/src/com/android/hoststubgen/HostStubGen.kt b/tools/hoststubgen/hoststubgen/src/com/android/hoststubgen/HostStubGen.kt
index 7212beb..73cfd3f 100644
--- a/tools/hoststubgen/hoststubgen/src/com/android/hoststubgen/HostStubGen.kt
+++ b/tools/hoststubgen/hoststubgen/src/com/android/hoststubgen/HostStubGen.kt
@@ -33,6 +33,8 @@
 import org.objectweb.asm.ClassReader
 import org.objectweb.asm.ClassVisitor
 import org.objectweb.asm.ClassWriter
+import org.objectweb.asm.commons.ClassRemapper
+import org.objectweb.asm.commons.Remapper
 import org.objectweb.asm.util.CheckClassAdapter
 import java.io.BufferedInputStream
 import java.io.FileOutputStream
@@ -70,7 +72,7 @@
         }
 
         // Build the filters.
-        val filter = buildFilter(errors, allClasses, options)
+        val (filter, policyFileRemapper) = buildFilter(errors, allClasses, options)
 
         // Transform the jar.
         convert(
@@ -82,6 +84,7 @@
                 allClasses,
                 errors,
                 stats,
+                policyFileRemapper,
         )
 
         // Dump statistics, if specified.
@@ -107,7 +110,7 @@
             errors: HostStubGenErrors,
             allClasses: ClassNodes,
             options: HostStubGenOptions,
-            ): OutputFilter {
+            ): Pair<OutputFilter, Remapper?> {
         // We build a "chain" of multiple filters here.
         //
         // The filters are build in from "inside", meaning the first filter created here is
@@ -160,10 +163,14 @@
             filter,
         )
 
+        var policyFileRemapper: Remapper? = null
+
         // Next, "text based" filter, which allows to override polices without touching
         // the target code.
         options.policyOverrideFile.ifSet {
-            filter = createFilterFromTextPolicyFile(it, allClasses, filter)
+            val (f, p) = createFilterFromTextPolicyFile(it, allClasses, filter)
+            filter = f
+            policyFileRemapper = p
         }
 
         // If `--intersect-stub-jar` is provided, load from these jar files too.
@@ -178,7 +185,7 @@
         // Apply the implicit filter.
         filter = ImplicitOutputFilter(errors, allClasses, filter)
 
-        return filter
+        return Pair(filter, policyFileRemapper)
     }
 
     /**
@@ -205,6 +212,7 @@
             classes: ClassNodes,
             errors: HostStubGenErrors,
             stats: HostStubGenStats,
+            remapper: Remapper?,
             ) {
         log.i("Converting %s into [stub: %s, impl: %s] ...", inJar, outStubJar, outImplJar)
         log.i("ASM CheckClassAdapter is %s", if (enableChecker) "enabled" else "disabled")
@@ -222,8 +230,8 @@
                         while (inEntries.hasMoreElements()) {
                             val entry = inEntries.nextElement()
                             convertSingleEntry(inZip, entry, stubOutStream, implOutStream,
-                                    filter, packageRedirector, enableChecker, classes, errors,
-                                    stats)
+                                    filter, packageRedirector, remapper,
+                                    enableChecker, classes, errors, stats)
                         }
                         log.i("Converted all entries.")
                     }
@@ -253,6 +261,7 @@
             implOutStream: ZipOutputStream?,
             filter: OutputFilter,
             packageRedirector: PackageRedirectRemapper,
+            remapper: Remapper?,
             enableChecker: Boolean,
             classes: ClassNodes,
             errors: HostStubGenErrors,
@@ -270,7 +279,7 @@
             // If it's a class, convert it.
             if (name.endsWith(".class")) {
                 processSingleClass(inZip, entry, stubOutStream, implOutStream, filter,
-                        packageRedirector, enableChecker, classes, errors, stats)
+                        packageRedirector, remapper, enableChecker, classes, errors, stats)
                 return
             }
 
@@ -321,6 +330,7 @@
             implOutStream: ZipOutputStream?,
             filter: OutputFilter,
             packageRedirector: PackageRedirectRemapper,
+            remapper: Remapper?,
             enableChecker: Boolean,
             classes: ClassNodes,
             errors: HostStubGenErrors,
@@ -332,16 +342,24 @@
             log.d("Removing class: %s %s", classInternalName, classPolicy)
             return
         }
+        // If we're applying a remapper, we need to rename the file too.
+        var newName = entry.name
+        remapper?.mapType(classInternalName)?.let { remappedName ->
+            if (remappedName != classInternalName) {
+                log.d("Renaming class file: %s -> %s", classInternalName, remappedName)
+                newName = remappedName + ".class"
+            }
+        }
         // Generate stub first.
         if (stubOutStream != null && classPolicy.policy.needsInStub) {
             log.v("Creating stub class: %s Policy: %s", classInternalName, classPolicy)
             log.withIndent {
                 BufferedInputStream(inZip.getInputStream(entry)).use { bis ->
-                    val newEntry = ZipEntry(entry.name)
+                    val newEntry = ZipEntry(newName)
                     stubOutStream.putNextEntry(newEntry)
                     convertClass(classInternalName, /*forImpl=*/false, bis,
-                            stubOutStream, filter, packageRedirector, enableChecker, classes,
-                            errors, null)
+                            stubOutStream, filter, packageRedirector, remapper,
+                            enableChecker, classes, errors, null)
                     stubOutStream.closeEntry()
                 }
             }
@@ -350,11 +368,11 @@
             log.v("Creating impl class: %s Policy: %s", classInternalName, classPolicy)
             log.withIndent {
                 BufferedInputStream(inZip.getInputStream(entry)).use { bis ->
-                    val newEntry = ZipEntry(entry.name)
+                    val newEntry = ZipEntry(newName)
                     implOutStream.putNextEntry(newEntry)
                     convertClass(classInternalName, /*forImpl=*/true, bis,
-                            implOutStream, filter, packageRedirector, enableChecker, classes,
-                            errors, stats)
+                            implOutStream, filter, packageRedirector, remapper,
+                            enableChecker, classes, errors, stats)
                     implOutStream.closeEntry()
                 }
             }
@@ -371,6 +389,7 @@
             out: OutputStream,
             filter: OutputFilter,
             packageRedirector: PackageRedirectRemapper,
+            remapper: Remapper?,
             enableChecker: Boolean,
             classes: ClassNodes,
             errors: HostStubGenErrors,
@@ -387,6 +406,12 @@
         if (enableChecker) {
             outVisitor = CheckClassAdapter(outVisitor)
         }
+
+        // Remapping should happen at the end.
+        remapper?.let {
+            outVisitor = ClassRemapper(outVisitor, remapper)
+        }
+
         val visitorOptions = BaseAdapter.Options(
                 enablePreTrace = options.enablePreTrace.get,
                 enablePostTrace = options.enablePostTrace.get,
@@ -395,7 +420,7 @@
                 stats = stats,
         )
         outVisitor = BaseAdapter.getVisitor(classInternalName, classes, outVisitor, filter,
-                packageRedirector, forImpl, visitorOptions)
+                packageRedirector, remapper, forImpl, visitorOptions)
 
         cr.accept(outVisitor, ClassReader.EXPAND_FRAMES)
         val data = cw.toByteArray()
diff --git a/tools/hoststubgen/hoststubgen/src/com/android/hoststubgen/filters/TextFileFilterPolicyParser.kt b/tools/hoststubgen/hoststubgen/src/com/android/hoststubgen/filters/TextFileFilterPolicyParser.kt
index a89824e..1828003 100644
--- a/tools/hoststubgen/hoststubgen/src/com/android/hoststubgen/filters/TextFileFilterPolicyParser.kt
+++ b/tools/hoststubgen/hoststubgen/src/com/android/hoststubgen/filters/TextFileFilterPolicyParser.kt
@@ -22,11 +22,13 @@
 import com.android.hoststubgen.normalizeTextLine
 import com.android.hoststubgen.whitespaceRegex
 import org.objectweb.asm.Opcodes
+import org.objectweb.asm.commons.Remapper
 import org.objectweb.asm.tree.ClassNode
 import java.io.BufferedReader
 import java.io.FileReader
 import java.io.PrintWriter
 import java.util.Objects
+import java.util.regex.Pattern
 
 /**
  * Print a class node as a "keep" policy.
@@ -60,7 +62,7 @@
         filename: String,
         classes: ClassNodes,
         fallback: OutputFilter,
-        ): OutputFilter {
+        ): Pair<OutputFilter, Remapper?> {
     log.i("Loading offloaded annotations from $filename ...")
     log.withIndent {
         val subclassFilter = SubclassFilter(classes, fallback)
@@ -73,6 +75,7 @@
         var featureFlagsPolicy: FilterPolicyWithReason? = null
         var syspropsPolicy: FilterPolicyWithReason? = null
         var rFilePolicy: FilterPolicyWithReason? = null
+        val typeRenameSpec = mutableListOf<TextFilePolicyRemapper.TypeRenameSpec>()
 
         try {
             BufferedReader(FileReader(filename)).use { reader ->
@@ -251,6 +254,22 @@
                                 imf.setRenameTo(className, fromName, signature, name)
                             }
                         }
+                        "r", "rename" -> {
+                            if (fields.size < 3) {
+                                throw ParseException("Rename ('r') expects 2 fields.")
+                            }
+                            // Add ".*" to make it a prefix match.
+                            val pattern = Pattern.compile(fields[1] + ".*")
+
+                            // Removing the leading /'s from the prefix. This allows
+                            // using a single '/' as an empty suffix, which is useful to have a
+                            // "negative" rename rule to avoid subsequent raname's from getting
+                            // applied. (Which is needed for services.jar)
+                            val prefix = fields[2].trimStart('/')
+
+                            typeRenameSpec += TextFilePolicyRemapper.TypeRenameSpec(
+                                pattern, prefix)
+                        }
 
                         else -> {
                             throw ParseException("Unknown directive \"${fields[0]}\"")
@@ -262,9 +281,16 @@
             throw e.withSourceInfo(filename, lineNo)
         }
 
+        var remapper: TextFilePolicyRemapper? = null
+        if (typeRenameSpec.isNotEmpty()) {
+            remapper = TextFilePolicyRemapper(typeRenameSpec)
+        }
+
         // Wrap the in-memory-filter with AHF.
-        return AndroidHeuristicsFilter(
-                classes, aidlPolicy, featureFlagsPolicy, syspropsPolicy, rFilePolicy, imf)
+        return Pair(
+            AndroidHeuristicsFilter(
+                classes, aidlPolicy, featureFlagsPolicy, syspropsPolicy, rFilePolicy, imf),
+            remapper)
     }
 }
 
diff --git a/tools/hoststubgen/hoststubgen/src/com/android/hoststubgen/filters/TextFilePolicyRemapper.kt b/tools/hoststubgen/hoststubgen/src/com/android/hoststubgen/filters/TextFilePolicyRemapper.kt
new file mode 100644
index 0000000..2d94bb4
--- /dev/null
+++ b/tools/hoststubgen/hoststubgen/src/com/android/hoststubgen/filters/TextFilePolicyRemapper.kt
@@ -0,0 +1,59 @@
+/*
+ * Copyright (C) 2024 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package com.android.hoststubgen.filters
+
+import com.android.hoststubgen.log
+import org.objectweb.asm.commons.Remapper
+import java.util.regex.Pattern
+
+/**
+ * A [Remapper] that provides a simple "jarjar" functionality.
+ */
+class TextFilePolicyRemapper(
+    val typeRenameSpecs: List<TypeRenameSpec>
+) : Remapper() {
+    /**
+     * When a package name matches [typeInternalNamePattern], we prepend [typeInternalNamePrefix]
+     * to it.
+     */
+    data class TypeRenameSpec(
+        val typeInternalNamePattern: Pattern,
+        val typeInternalNamePrefix: String,
+    )
+
+    private val cache = mutableMapOf<String, String>()
+
+    override fun mapType(typeInternalName: String): String {
+//        if (typeInternalName == null) {
+//            return null // do we need it??
+//        }
+        cache[typeInternalName]?.let {
+            return it
+        }
+
+        var mapped: String = typeInternalName
+        typeRenameSpecs.forEach {
+            if (it.typeInternalNamePattern.matcher(typeInternalName).matches()) {
+                mapped = it.typeInternalNamePrefix + typeInternalName
+                log.d("Renaming type $typeInternalName to $mapped")
+            }
+        }
+        cache[typeInternalName] = mapped
+        return mapped
+    }
+
+    // TODO Do we need to implement mapPackage(), etc too?
+}
diff --git a/tools/hoststubgen/hoststubgen/src/com/android/hoststubgen/visitors/BaseAdapter.kt b/tools/hoststubgen/hoststubgen/src/com/android/hoststubgen/visitors/BaseAdapter.kt
index c99ff0e..bad0449 100644
--- a/tools/hoststubgen/hoststubgen/src/com/android/hoststubgen/visitors/BaseAdapter.kt
+++ b/tools/hoststubgen/hoststubgen/src/com/android/hoststubgen/visitors/BaseAdapter.kt
@@ -34,6 +34,7 @@
 import org.objectweb.asm.MethodVisitor
 import org.objectweb.asm.Opcodes
 import org.objectweb.asm.commons.ClassRemapper
+import org.objectweb.asm.commons.Remapper
 import org.objectweb.asm.util.TraceClassVisitor
 import java.io.PrintWriter
 
@@ -259,13 +260,14 @@
 
     companion object {
         fun getVisitor(
-                classInternalName: String,
-                classes: ClassNodes,
-                nextVisitor: ClassVisitor,
-                filter: OutputFilter,
-                packageRedirector: PackageRedirectRemapper,
-                forImpl: Boolean,
-                options: Options,
+            classInternalName: String,
+            classes: ClassNodes,
+            nextVisitor: ClassVisitor,
+            filter: OutputFilter,
+            packageRedirector: PackageRedirectRemapper,
+            remapper: Remapper?,
+            forImpl: Boolean,
+            options: Options,
         ): ClassVisitor {
             var next = nextVisitor
 
diff --git a/tools/hoststubgen/hoststubgen/src/com/android/hoststubgen/visitors/PackageRedirectRemapper.kt b/tools/hoststubgen/hoststubgen/src/com/android/hoststubgen/visitors/PackageRedirectRemapper.kt
index b3790e1..e90ecd7 100644
--- a/tools/hoststubgen/hoststubgen/src/com/android/hoststubgen/visitors/PackageRedirectRemapper.kt
+++ b/tools/hoststubgen/hoststubgen/src/com/android/hoststubgen/visitors/PackageRedirectRemapper.kt
@@ -20,6 +20,18 @@
 
 /**
  * A [Remapper] for `--package-redirect`
+ *
+ * This is a feature to update all calls to specific packages to another package, which allows
+ * implementing a class in a different package, when the original package isn't allowed to modify.
+ *
+ * For example, using this, we can implement `dalvik.*` APIs in a separate package, and update
+ * all calls to the `dalvik` package to a different package.
+ *
+ * For this purpose, we don't expect the "renamed-from" classes to be in the target jar,
+ * so we don't apply the remapper to them. (The exclusion happens at the callsite of this class)
+ *
+ * TODO: Currently it's not used. Maybe remove, or just unify with the other remapper feature
+ * with TextFileFilterPolicyParser.kt.
  */
 class PackageRedirectRemapper(
         packageRedirects: List<Pair<String, String>>,
diff --git a/tools/hoststubgen/hoststubgen/test-tiny-framework/golden-output/01-hoststubgen-test-tiny-framework-orig-dump.txt b/tools/hoststubgen/hoststubgen/test-tiny-framework/golden-output/01-hoststubgen-test-tiny-framework-orig-dump.txt
index 3ef1175..c127e67 100644
--- a/tools/hoststubgen/hoststubgen/test-tiny-framework/golden-output/01-hoststubgen-test-tiny-framework-orig-dump.txt
+++ b/tools/hoststubgen/hoststubgen/test-tiny-framework/golden-output/01-hoststubgen-test-tiny-framework-orig-dump.txt
@@ -2706,6 +2706,95 @@
 RuntimeInvisibleAnnotations:
   x: #x()
     android.hosttest.annotation.HostSideTestWholeClassStub
+## Class: com/android/hoststubgen/test/tinyframework/TinyFrameworkRenamedClassCaller.class
+  Compiled from "TinyFrameworkRenamedClassCaller.java"
+public class com.android.hoststubgen.test.tinyframework.TinyFrameworkRenamedClassCaller
+  minor version: 0
+  major version: 61
+  flags: (0x0021) ACC_PUBLIC, ACC_SUPER
+  this_class: #x                         // com/android/hoststubgen/test/tinyframework/TinyFrameworkRenamedClassCaller
+  super_class: #x                         // java/lang/Object
+  interfaces: 0, fields: 0, methods: 2, attributes: 2
+  public com.android.hoststubgen.test.tinyframework.TinyFrameworkRenamedClassCaller();
+    descriptor: ()V
+    flags: (0x0001) ACC_PUBLIC
+    Code:
+      stack=1, locals=1, args_size=1
+         x: aload_0
+         x: invokespecial #x                  // Method java/lang/Object."<init>":()V
+         x: return
+      LineNumberTable:
+      LocalVariableTable:
+        Start  Length  Slot  Name   Signature
+            0       5     0  this   Lcom/android/hoststubgen/test/tinyframework/TinyFrameworkRenamedClassCaller;
+
+  public static int foo(int);
+    descriptor: (I)I
+    flags: (0x0009) ACC_PUBLIC, ACC_STATIC
+    Code:
+      stack=3, locals=1, args_size=1
+         x: new           #x                  // class com/android/hoststubgen/test/tinyframework/TinyFrameworkToBeRenamed
+         x: dup
+         x: iload_0
+         x: invokespecial #x                  // Method com/android/hoststubgen/test/tinyframework/TinyFrameworkToBeRenamed."<init>":(I)V
+         x: invokevirtual #x                 // Method com/android/hoststubgen/test/tinyframework/TinyFrameworkToBeRenamed.getValue:()I
+        x: ireturn
+      LineNumberTable:
+      LocalVariableTable:
+        Start  Length  Slot  Name   Signature
+            0      12     0 value   I
+}
+SourceFile: "TinyFrameworkRenamedClassCaller.java"
+RuntimeInvisibleAnnotations:
+  x: #x()
+    android.hosttest.annotation.HostSideTestWholeClassStub
+## Class: com/android/hoststubgen/test/tinyframework/TinyFrameworkToBeRenamed.class
+  Compiled from "TinyFrameworkToBeRenamed.java"
+public class com.android.hoststubgen.test.tinyframework.TinyFrameworkToBeRenamed
+  minor version: 0
+  major version: 61
+  flags: (0x0021) ACC_PUBLIC, ACC_SUPER
+  this_class: #x                          // com/android/hoststubgen/test/tinyframework/TinyFrameworkToBeRenamed
+  super_class: #x                         // java/lang/Object
+  interfaces: 0, fields: 1, methods: 2, attributes: 2
+  private final int mValue;
+    descriptor: I
+    flags: (0x0012) ACC_PRIVATE, ACC_FINAL
+
+  public com.android.hoststubgen.test.tinyframework.TinyFrameworkToBeRenamed(int);
+    descriptor: (I)V
+    flags: (0x0001) ACC_PUBLIC
+    Code:
+      stack=2, locals=2, args_size=2
+         x: aload_0
+         x: invokespecial #x                  // Method java/lang/Object."<init>":()V
+         x: aload_0
+         x: iload_1
+         x: putfield      #x                  // Field mValue:I
+         x: return
+      LineNumberTable:
+      LocalVariableTable:
+        Start  Length  Slot  Name   Signature
+            0      10     0  this   Lcom/android/hoststubgen/test/tinyframework/TinyFrameworkToBeRenamed;
+            0      10     1 value   I
+
+  public int getValue();
+    descriptor: ()I
+    flags: (0x0001) ACC_PUBLIC
+    Code:
+      stack=1, locals=1, args_size=1
+         x: aload_0
+         x: getfield      #x                  // Field mValue:I
+         x: ireturn
+      LineNumberTable:
+      LocalVariableTable:
+        Start  Length  Slot  Name   Signature
+            0       5     0  this   Lcom/android/hoststubgen/test/tinyframework/TinyFrameworkToBeRenamed;
+}
+SourceFile: "TinyFrameworkToBeRenamed.java"
+RuntimeInvisibleAnnotations:
+  x: #x()
+    android.hosttest.annotation.HostSideTestWholeClassStub
 ## Class: com/android/hoststubgen/test/tinyframework/packagetest/A.class
   Compiled from "A.java"
 public class com.android.hoststubgen.test.tinyframework.packagetest.A
diff --git a/tools/hoststubgen/hoststubgen/test-tiny-framework/golden-output/02-hoststubgen-test-tiny-framework-host-stub-dump.txt b/tools/hoststubgen/hoststubgen/test-tiny-framework/golden-output/02-hoststubgen-test-tiny-framework-host-stub-dump.txt
index 0bbb418..17ba48c 100644
--- a/tools/hoststubgen/hoststubgen/test-tiny-framework/golden-output/02-hoststubgen-test-tiny-framework-host-stub-dump.txt
+++ b/tools/hoststubgen/hoststubgen/test-tiny-framework/golden-output/02-hoststubgen-test-tiny-framework-host-stub-dump.txt
@@ -2177,6 +2177,56 @@
 RuntimeInvisibleAnnotations:
   x: #x()
     android.hosttest.annotation.HostSideTestWholeClassStub
+## Class: com/android/hoststubgen/test/tinyframework/TinyFrameworkRenamedClassCaller.class
+  Compiled from "TinyFrameworkRenamedClassCaller.java"
+public class com.android.hoststubgen.test.tinyframework.TinyFrameworkRenamedClassCaller
+  minor version: 0
+  major version: 61
+  flags: (0x0021) ACC_PUBLIC, ACC_SUPER
+  this_class: #x                          // com/android/hoststubgen/test/tinyframework/TinyFrameworkRenamedClassCaller
+  super_class: #x                         // java/lang/Object
+  interfaces: 0, fields: 0, methods: 2, attributes: 3
+  public com.android.hoststubgen.test.tinyframework.TinyFrameworkRenamedClassCaller();
+    descriptor: ()V
+    flags: (0x0001) ACC_PUBLIC
+    Code:
+      stack=3, locals=1, args_size=1
+         x: new           #x                 // class java/lang/RuntimeException
+         x: dup
+         x: ldc           #x                 // String Stub!
+         x: invokespecial #x                 // Method java/lang/RuntimeException."<init>":(Ljava/lang/String;)V
+         x: athrow
+    RuntimeVisibleAnnotations:
+      x: #x()
+        com.android.hoststubgen.hosthelper.HostStubGenKeptInStub
+      x: #x()
+        com.android.hoststubgen.hosthelper.HostStubGenKeptInImpl
+
+  public static int foo(int);
+    descriptor: (I)I
+    flags: (0x0009) ACC_PUBLIC, ACC_STATIC
+    Code:
+      stack=3, locals=1, args_size=1
+         x: new           #x                 // class java/lang/RuntimeException
+         x: dup
+         x: ldc           #x                 // String Stub!
+         x: invokespecial #x                 // Method java/lang/RuntimeException."<init>":(Ljava/lang/String;)V
+         x: athrow
+    RuntimeVisibleAnnotations:
+      x: #x()
+        com.android.hoststubgen.hosthelper.HostStubGenKeptInStub
+      x: #x()
+        com.android.hoststubgen.hosthelper.HostStubGenKeptInImpl
+}
+SourceFile: "TinyFrameworkRenamedClassCaller.java"
+RuntimeVisibleAnnotations:
+  x: #x()
+    com.android.hoststubgen.hosthelper.HostStubGenKeptInStub
+  x: #x()
+    com.android.hoststubgen.hosthelper.HostStubGenKeptInImpl
+RuntimeInvisibleAnnotations:
+  x: #x()
+    android.hosttest.annotation.HostSideTestWholeClassStub
 ## Class: com/android/hoststubgen/test/tinyframework/packagetest/A.class
   Compiled from "A.java"
 public class com.android.hoststubgen.test.tinyframework.packagetest.A
@@ -2419,3 +2469,62 @@
 RuntimeInvisibleAnnotations:
   x: #x()
     android.hosttest.annotation.HostSideTestWholeClassStub
+## Class: rename_prefix/com/android/hoststubgen/test/tinyframework/TinyFrameworkToBeRenamed.class
+  Compiled from "TinyFrameworkToBeRenamed.java"
+public class rename_prefix.com.android.hoststubgen.test.tinyframework.TinyFrameworkToBeRenamed
+  minor version: 0
+  major version: 61
+  flags: (0x0021) ACC_PUBLIC, ACC_SUPER
+  this_class: #x                          // rename_prefix/com/android/hoststubgen/test/tinyframework/TinyFrameworkToBeRenamed
+  super_class: #x                         // java/lang/Object
+  interfaces: 0, fields: 1, methods: 2, attributes: 3
+  private final int mValue;
+    descriptor: I
+    flags: (0x0012) ACC_PRIVATE, ACC_FINAL
+    RuntimeVisibleAnnotations:
+      x: #x()
+        com.android.hoststubgen.hosthelper.HostStubGenKeptInStub
+      x: #x()
+        com.android.hoststubgen.hosthelper.HostStubGenKeptInImpl
+
+  public rename_prefix.com.android.hoststubgen.test.tinyframework.TinyFrameworkToBeRenamed(int);
+    descriptor: (I)V
+    flags: (0x0001) ACC_PUBLIC
+    Code:
+      stack=3, locals=2, args_size=2
+         x: new           #x                 // class java/lang/RuntimeException
+         x: dup
+         x: ldc           #x                 // String Stub!
+         x: invokespecial #x                 // Method java/lang/RuntimeException."<init>":(Ljava/lang/String;)V
+         x: athrow
+    RuntimeVisibleAnnotations:
+      x: #x()
+        com.android.hoststubgen.hosthelper.HostStubGenKeptInStub
+      x: #x()
+        com.android.hoststubgen.hosthelper.HostStubGenKeptInImpl
+
+  public int getValue();
+    descriptor: ()I
+    flags: (0x0001) ACC_PUBLIC
+    Code:
+      stack=3, locals=1, args_size=1
+         x: new           #x                 // class java/lang/RuntimeException
+         x: dup
+         x: ldc           #x                 // String Stub!
+         x: invokespecial #x                 // Method java/lang/RuntimeException."<init>":(Ljava/lang/String;)V
+         x: athrow
+    RuntimeVisibleAnnotations:
+      x: #x()
+        com.android.hoststubgen.hosthelper.HostStubGenKeptInStub
+      x: #x()
+        com.android.hoststubgen.hosthelper.HostStubGenKeptInImpl
+}
+SourceFile: "TinyFrameworkToBeRenamed.java"
+RuntimeVisibleAnnotations:
+  x: #x()
+    com.android.hoststubgen.hosthelper.HostStubGenKeptInStub
+  x: #x()
+    com.android.hoststubgen.hosthelper.HostStubGenKeptInImpl
+RuntimeInvisibleAnnotations:
+  x: #x()
+    android.hosttest.annotation.HostSideTestWholeClassStub
diff --git a/tools/hoststubgen/hoststubgen/test-tiny-framework/golden-output/03-hoststubgen-test-tiny-framework-host-impl-dump.txt b/tools/hoststubgen/hoststubgen/test-tiny-framework/golden-output/03-hoststubgen-test-tiny-framework-host-impl-dump.txt
index 57f3783..0f5f7e7 100644
--- a/tools/hoststubgen/hoststubgen/test-tiny-framework/golden-output/03-hoststubgen-test-tiny-framework-host-impl-dump.txt
+++ b/tools/hoststubgen/hoststubgen/test-tiny-framework/golden-output/03-hoststubgen-test-tiny-framework-host-impl-dump.txt
@@ -3540,6 +3540,63 @@
 RuntimeInvisibleAnnotations:
   x: #x()
     android.hosttest.annotation.HostSideTestWholeClassStub
+## Class: com/android/hoststubgen/test/tinyframework/TinyFrameworkRenamedClassCaller.class
+  Compiled from "TinyFrameworkRenamedClassCaller.java"
+public class com.android.hoststubgen.test.tinyframework.TinyFrameworkRenamedClassCaller
+  minor version: 0
+  major version: 61
+  flags: (0x0021) ACC_PUBLIC, ACC_SUPER
+  this_class: #x                          // com/android/hoststubgen/test/tinyframework/TinyFrameworkRenamedClassCaller
+  super_class: #x                         // java/lang/Object
+  interfaces: 0, fields: 0, methods: 2, attributes: 3
+  public com.android.hoststubgen.test.tinyframework.TinyFrameworkRenamedClassCaller();
+    descriptor: ()V
+    flags: (0x0001) ACC_PUBLIC
+    Code:
+      stack=1, locals=1, args_size=1
+         x: aload_0
+         x: invokespecial #x                 // Method java/lang/Object."<init>":()V
+         x: return
+      LineNumberTable:
+      LocalVariableTable:
+        Start  Length  Slot  Name   Signature
+            0       5     0  this   Lcom/android/hoststubgen/test/tinyframework/TinyFrameworkRenamedClassCaller;
+    RuntimeVisibleAnnotations:
+      x: #x()
+        com.android.hoststubgen.hosthelper.HostStubGenKeptInStub
+      x: #x()
+        com.android.hoststubgen.hosthelper.HostStubGenKeptInImpl
+
+  public static int foo(int);
+    descriptor: (I)I
+    flags: (0x0009) ACC_PUBLIC, ACC_STATIC
+    Code:
+      stack=3, locals=1, args_size=1
+         x: new           #x                 // class rename_prefix/com/android/hoststubgen/test/tinyframework/TinyFrameworkToBeRenamed
+         x: dup
+         x: iload_0
+         x: invokespecial #x                 // Method rename_prefix/com/android/hoststubgen/test/tinyframework/TinyFrameworkToBeRenamed."<init>":(I)V
+         x: invokevirtual #x                 // Method rename_prefix/com/android/hoststubgen/test/tinyframework/TinyFrameworkToBeRenamed.getValue:()I
+        x: ireturn
+      LineNumberTable:
+      LocalVariableTable:
+        Start  Length  Slot  Name   Signature
+            0      12     0 value   I
+    RuntimeVisibleAnnotations:
+      x: #x()
+        com.android.hoststubgen.hosthelper.HostStubGenKeptInStub
+      x: #x()
+        com.android.hoststubgen.hosthelper.HostStubGenKeptInImpl
+}
+SourceFile: "TinyFrameworkRenamedClassCaller.java"
+RuntimeVisibleAnnotations:
+  x: #x()
+    com.android.hoststubgen.hosthelper.HostStubGenKeptInStub
+  x: #x()
+    com.android.hoststubgen.hosthelper.HostStubGenKeptInImpl
+RuntimeInvisibleAnnotations:
+  x: #x()
+    android.hosttest.annotation.HostSideTestWholeClassStub
 ## Class: com/android/hoststubgen/test/tinyframework/packagetest/A.class
   Compiled from "A.java"
 public class com.android.hoststubgen.test.tinyframework.packagetest.A
@@ -3962,3 +4019,70 @@
 RuntimeInvisibleAnnotations:
   x: #x()
     android.hosttest.annotation.HostSideTestWholeClassStub
+## Class: rename_prefix/com/android/hoststubgen/test/tinyframework/TinyFrameworkToBeRenamed.class
+  Compiled from "TinyFrameworkToBeRenamed.java"
+public class rename_prefix.com.android.hoststubgen.test.tinyframework.TinyFrameworkToBeRenamed
+  minor version: 0
+  major version: 61
+  flags: (0x0021) ACC_PUBLIC, ACC_SUPER
+  this_class: #x                          // rename_prefix/com/android/hoststubgen/test/tinyframework/TinyFrameworkToBeRenamed
+  super_class: #x                         // java/lang/Object
+  interfaces: 0, fields: 1, methods: 2, attributes: 3
+  private final int mValue;
+    descriptor: I
+    flags: (0x0012) ACC_PRIVATE, ACC_FINAL
+    RuntimeVisibleAnnotations:
+      x: #x()
+        com.android.hoststubgen.hosthelper.HostStubGenKeptInStub
+      x: #x()
+        com.android.hoststubgen.hosthelper.HostStubGenKeptInImpl
+
+  public rename_prefix.com.android.hoststubgen.test.tinyframework.TinyFrameworkToBeRenamed(int);
+    descriptor: (I)V
+    flags: (0x0001) ACC_PUBLIC
+    Code:
+      stack=2, locals=2, args_size=2
+         x: aload_0
+         x: invokespecial #x                 // Method java/lang/Object."<init>":()V
+         x: aload_0
+         x: iload_1
+         x: putfield      #x                 // Field mValue:I
+         x: return
+      LineNumberTable:
+      LocalVariableTable:
+        Start  Length  Slot  Name   Signature
+            0      10     0  this   Lcom/android/hoststubgen/test/tinyframework/TinyFrameworkToBeRenamed;
+            0      10     1 value   I
+    RuntimeVisibleAnnotations:
+      x: #x()
+        com.android.hoststubgen.hosthelper.HostStubGenKeptInStub
+      x: #x()
+        com.android.hoststubgen.hosthelper.HostStubGenKeptInImpl
+
+  public int getValue();
+    descriptor: ()I
+    flags: (0x0001) ACC_PUBLIC
+    Code:
+      stack=1, locals=1, args_size=1
+         x: aload_0
+         x: getfield      #x                 // Field mValue:I
+         x: ireturn
+      LineNumberTable:
+      LocalVariableTable:
+        Start  Length  Slot  Name   Signature
+            0       5     0  this   Lcom/android/hoststubgen/test/tinyframework/TinyFrameworkToBeRenamed;
+    RuntimeVisibleAnnotations:
+      x: #x()
+        com.android.hoststubgen.hosthelper.HostStubGenKeptInStub
+      x: #x()
+        com.android.hoststubgen.hosthelper.HostStubGenKeptInImpl
+}
+SourceFile: "TinyFrameworkToBeRenamed.java"
+RuntimeVisibleAnnotations:
+  x: #x()
+    com.android.hoststubgen.hosthelper.HostStubGenKeptInStub
+  x: #x()
+    com.android.hoststubgen.hosthelper.HostStubGenKeptInImpl
+RuntimeInvisibleAnnotations:
+  x: #x()
+    android.hosttest.annotation.HostSideTestWholeClassStub
diff --git a/tools/hoststubgen/hoststubgen/test-tiny-framework/golden-output/12-hoststubgen-test-tiny-framework-host-ext-stub-dump.txt b/tools/hoststubgen/hoststubgen/test-tiny-framework/golden-output/12-hoststubgen-test-tiny-framework-host-ext-stub-dump.txt
index 0bbb418..17ba48c 100644
--- a/tools/hoststubgen/hoststubgen/test-tiny-framework/golden-output/12-hoststubgen-test-tiny-framework-host-ext-stub-dump.txt
+++ b/tools/hoststubgen/hoststubgen/test-tiny-framework/golden-output/12-hoststubgen-test-tiny-framework-host-ext-stub-dump.txt
@@ -2177,6 +2177,56 @@
 RuntimeInvisibleAnnotations:
   x: #x()
     android.hosttest.annotation.HostSideTestWholeClassStub
+## Class: com/android/hoststubgen/test/tinyframework/TinyFrameworkRenamedClassCaller.class
+  Compiled from "TinyFrameworkRenamedClassCaller.java"
+public class com.android.hoststubgen.test.tinyframework.TinyFrameworkRenamedClassCaller
+  minor version: 0
+  major version: 61
+  flags: (0x0021) ACC_PUBLIC, ACC_SUPER
+  this_class: #x                          // com/android/hoststubgen/test/tinyframework/TinyFrameworkRenamedClassCaller
+  super_class: #x                         // java/lang/Object
+  interfaces: 0, fields: 0, methods: 2, attributes: 3
+  public com.android.hoststubgen.test.tinyframework.TinyFrameworkRenamedClassCaller();
+    descriptor: ()V
+    flags: (0x0001) ACC_PUBLIC
+    Code:
+      stack=3, locals=1, args_size=1
+         x: new           #x                 // class java/lang/RuntimeException
+         x: dup
+         x: ldc           #x                 // String Stub!
+         x: invokespecial #x                 // Method java/lang/RuntimeException."<init>":(Ljava/lang/String;)V
+         x: athrow
+    RuntimeVisibleAnnotations:
+      x: #x()
+        com.android.hoststubgen.hosthelper.HostStubGenKeptInStub
+      x: #x()
+        com.android.hoststubgen.hosthelper.HostStubGenKeptInImpl
+
+  public static int foo(int);
+    descriptor: (I)I
+    flags: (0x0009) ACC_PUBLIC, ACC_STATIC
+    Code:
+      stack=3, locals=1, args_size=1
+         x: new           #x                 // class java/lang/RuntimeException
+         x: dup
+         x: ldc           #x                 // String Stub!
+         x: invokespecial #x                 // Method java/lang/RuntimeException."<init>":(Ljava/lang/String;)V
+         x: athrow
+    RuntimeVisibleAnnotations:
+      x: #x()
+        com.android.hoststubgen.hosthelper.HostStubGenKeptInStub
+      x: #x()
+        com.android.hoststubgen.hosthelper.HostStubGenKeptInImpl
+}
+SourceFile: "TinyFrameworkRenamedClassCaller.java"
+RuntimeVisibleAnnotations:
+  x: #x()
+    com.android.hoststubgen.hosthelper.HostStubGenKeptInStub
+  x: #x()
+    com.android.hoststubgen.hosthelper.HostStubGenKeptInImpl
+RuntimeInvisibleAnnotations:
+  x: #x()
+    android.hosttest.annotation.HostSideTestWholeClassStub
 ## Class: com/android/hoststubgen/test/tinyframework/packagetest/A.class
   Compiled from "A.java"
 public class com.android.hoststubgen.test.tinyframework.packagetest.A
@@ -2419,3 +2469,62 @@
 RuntimeInvisibleAnnotations:
   x: #x()
     android.hosttest.annotation.HostSideTestWholeClassStub
+## Class: rename_prefix/com/android/hoststubgen/test/tinyframework/TinyFrameworkToBeRenamed.class
+  Compiled from "TinyFrameworkToBeRenamed.java"
+public class rename_prefix.com.android.hoststubgen.test.tinyframework.TinyFrameworkToBeRenamed
+  minor version: 0
+  major version: 61
+  flags: (0x0021) ACC_PUBLIC, ACC_SUPER
+  this_class: #x                          // rename_prefix/com/android/hoststubgen/test/tinyframework/TinyFrameworkToBeRenamed
+  super_class: #x                         // java/lang/Object
+  interfaces: 0, fields: 1, methods: 2, attributes: 3
+  private final int mValue;
+    descriptor: I
+    flags: (0x0012) ACC_PRIVATE, ACC_FINAL
+    RuntimeVisibleAnnotations:
+      x: #x()
+        com.android.hoststubgen.hosthelper.HostStubGenKeptInStub
+      x: #x()
+        com.android.hoststubgen.hosthelper.HostStubGenKeptInImpl
+
+  public rename_prefix.com.android.hoststubgen.test.tinyframework.TinyFrameworkToBeRenamed(int);
+    descriptor: (I)V
+    flags: (0x0001) ACC_PUBLIC
+    Code:
+      stack=3, locals=2, args_size=2
+         x: new           #x                 // class java/lang/RuntimeException
+         x: dup
+         x: ldc           #x                 // String Stub!
+         x: invokespecial #x                 // Method java/lang/RuntimeException."<init>":(Ljava/lang/String;)V
+         x: athrow
+    RuntimeVisibleAnnotations:
+      x: #x()
+        com.android.hoststubgen.hosthelper.HostStubGenKeptInStub
+      x: #x()
+        com.android.hoststubgen.hosthelper.HostStubGenKeptInImpl
+
+  public int getValue();
+    descriptor: ()I
+    flags: (0x0001) ACC_PUBLIC
+    Code:
+      stack=3, locals=1, args_size=1
+         x: new           #x                 // class java/lang/RuntimeException
+         x: dup
+         x: ldc           #x                 // String Stub!
+         x: invokespecial #x                 // Method java/lang/RuntimeException."<init>":(Ljava/lang/String;)V
+         x: athrow
+    RuntimeVisibleAnnotations:
+      x: #x()
+        com.android.hoststubgen.hosthelper.HostStubGenKeptInStub
+      x: #x()
+        com.android.hoststubgen.hosthelper.HostStubGenKeptInImpl
+}
+SourceFile: "TinyFrameworkToBeRenamed.java"
+RuntimeVisibleAnnotations:
+  x: #x()
+    com.android.hoststubgen.hosthelper.HostStubGenKeptInStub
+  x: #x()
+    com.android.hoststubgen.hosthelper.HostStubGenKeptInImpl
+RuntimeInvisibleAnnotations:
+  x: #x()
+    android.hosttest.annotation.HostSideTestWholeClassStub
diff --git a/tools/hoststubgen/hoststubgen/test-tiny-framework/golden-output/13-hoststubgen-test-tiny-framework-host-ext-impl-dump.txt b/tools/hoststubgen/hoststubgen/test-tiny-framework/golden-output/13-hoststubgen-test-tiny-framework-host-ext-impl-dump.txt
index 91104de..3beea64 100644
--- a/tools/hoststubgen/hoststubgen/test-tiny-framework/golden-output/13-hoststubgen-test-tiny-framework-host-ext-impl-dump.txt
+++ b/tools/hoststubgen/hoststubgen/test-tiny-framework/golden-output/13-hoststubgen-test-tiny-framework-host-ext-impl-dump.txt
@@ -4408,6 +4408,83 @@
 RuntimeInvisibleAnnotations:
   x: #x()
     android.hosttest.annotation.HostSideTestWholeClassStub
+## Class: com/android/hoststubgen/test/tinyframework/TinyFrameworkRenamedClassCaller.class
+  Compiled from "TinyFrameworkRenamedClassCaller.java"
+public class com.android.hoststubgen.test.tinyframework.TinyFrameworkRenamedClassCaller
+  minor version: 0
+  major version: 61
+  flags: (0x0021) ACC_PUBLIC, ACC_SUPER
+  this_class: #x                          // com/android/hoststubgen/test/tinyframework/TinyFrameworkRenamedClassCaller
+  super_class: #x                         // java/lang/Object
+  interfaces: 0, fields: 0, methods: 3, attributes: 3
+  private static {};
+    descriptor: ()V
+    flags: (0x000a) ACC_PRIVATE, ACC_STATIC
+    Code:
+      stack=2, locals=0, args_size=0
+         x: ldc           #x                  // class com/android/hoststubgen/test/tinyframework/TinyFrameworkRenamedClassCaller
+         x: ldc           #x                 // String com.android.hoststubgen.hosthelper.HostTestUtils.logClassLoaded
+         x: invokestatic  #x                 // Method com/android/hoststubgen/hosthelper/HostTestUtils.onClassLoaded:(Ljava/lang/Class;Ljava/lang/String;)V
+         x: return
+
+  public com.android.hoststubgen.test.tinyframework.TinyFrameworkRenamedClassCaller();
+    descriptor: ()V
+    flags: (0x0001) ACC_PUBLIC
+    Code:
+      stack=4, locals=1, args_size=1
+         x: ldc           #x                  // class com/android/hoststubgen/test/tinyframework/TinyFrameworkRenamedClassCaller
+         x: ldc           #x                 // String <init>
+         x: ldc           #x                 // String ()V
+         x: ldc           #x                 // String com.android.hoststubgen.hosthelper.HostTestUtils.logMethodCall
+         x: invokestatic  #x                 // Method com/android/hoststubgen/hosthelper/HostTestUtils.callMethodCallHook:(Ljava/lang/Class;Ljava/lang/String;Ljava/lang/String;Ljava/lang/String;)V
+        x: aload_0
+        x: invokespecial #x                 // Method java/lang/Object."<init>":()V
+        x: return
+      LineNumberTable:
+      LocalVariableTable:
+        Start  Length  Slot  Name   Signature
+           11       5     0  this   Lcom/android/hoststubgen/test/tinyframework/TinyFrameworkRenamedClassCaller;
+    RuntimeVisibleAnnotations:
+      x: #x()
+        com.android.hoststubgen.hosthelper.HostStubGenKeptInStub
+      x: #x()
+        com.android.hoststubgen.hosthelper.HostStubGenKeptInImpl
+
+  public static int foo(int);
+    descriptor: (I)I
+    flags: (0x0009) ACC_PUBLIC, ACC_STATIC
+    Code:
+      stack=4, locals=1, args_size=1
+         x: ldc           #x                  // class com/android/hoststubgen/test/tinyframework/TinyFrameworkRenamedClassCaller
+         x: ldc           #x                 // String foo
+         x: ldc           #x                 // String (I)I
+         x: ldc           #x                 // String com.android.hoststubgen.hosthelper.HostTestUtils.logMethodCall
+         x: invokestatic  #x                 // Method com/android/hoststubgen/hosthelper/HostTestUtils.callMethodCallHook:(Ljava/lang/Class;Ljava/lang/String;Ljava/lang/String;Ljava/lang/String;)V
+        x: new           #x                 // class rename_prefix/com/android/hoststubgen/test/tinyframework/TinyFrameworkToBeRenamed
+        x: dup
+        x: iload_0
+        x: invokespecial #x                 // Method rename_prefix/com/android/hoststubgen/test/tinyframework/TinyFrameworkToBeRenamed."<init>":(I)V
+        x: invokevirtual #x                 // Method rename_prefix/com/android/hoststubgen/test/tinyframework/TinyFrameworkToBeRenamed.getValue:()I
+        x: ireturn
+      LineNumberTable:
+      LocalVariableTable:
+        Start  Length  Slot  Name   Signature
+           11      12     0 value   I
+    RuntimeVisibleAnnotations:
+      x: #x()
+        com.android.hoststubgen.hosthelper.HostStubGenKeptInStub
+      x: #x()
+        com.android.hoststubgen.hosthelper.HostStubGenKeptInImpl
+}
+SourceFile: "TinyFrameworkRenamedClassCaller.java"
+RuntimeVisibleAnnotations:
+  x: #x()
+    com.android.hoststubgen.hosthelper.HostStubGenKeptInStub
+  x: #x()
+    com.android.hoststubgen.hosthelper.HostStubGenKeptInImpl
+RuntimeInvisibleAnnotations:
+  x: #x()
+    android.hosttest.annotation.HostSideTestWholeClassStub
 ## Class: com/android/hoststubgen/test/tinyframework/packagetest/A.class
   Compiled from "A.java"
 public class com.android.hoststubgen.test.tinyframework.packagetest.A
@@ -5041,3 +5118,90 @@
 RuntimeInvisibleAnnotations:
   x: #x()
     android.hosttest.annotation.HostSideTestWholeClassStub
+## Class: rename_prefix/com/android/hoststubgen/test/tinyframework/TinyFrameworkToBeRenamed.class
+  Compiled from "TinyFrameworkToBeRenamed.java"
+public class rename_prefix.com.android.hoststubgen.test.tinyframework.TinyFrameworkToBeRenamed
+  minor version: 0
+  major version: 61
+  flags: (0x0021) ACC_PUBLIC, ACC_SUPER
+  this_class: #x                          // rename_prefix/com/android/hoststubgen/test/tinyframework/TinyFrameworkToBeRenamed
+  super_class: #x                         // java/lang/Object
+  interfaces: 0, fields: 1, methods: 3, attributes: 3
+  private final int mValue;
+    descriptor: I
+    flags: (0x0012) ACC_PRIVATE, ACC_FINAL
+    RuntimeVisibleAnnotations:
+      x: #x()
+        com.android.hoststubgen.hosthelper.HostStubGenKeptInStub
+      x: #x()
+        com.android.hoststubgen.hosthelper.HostStubGenKeptInImpl
+
+  private static {};
+    descriptor: ()V
+    flags: (0x000a) ACC_PRIVATE, ACC_STATIC
+    Code:
+      stack=2, locals=0, args_size=0
+         x: ldc           #x                 // class com/android/hoststubgen/test/tinyframework/TinyFrameworkToBeRenamed
+         x: ldc           #x                 // String com.android.hoststubgen.hosthelper.HostTestUtils.logClassLoaded
+         x: invokestatic  #x                 // Method com/android/hoststubgen/hosthelper/HostTestUtils.onClassLoaded:(Ljava/lang/Class;Ljava/lang/String;)V
+         x: return
+
+  public rename_prefix.com.android.hoststubgen.test.tinyframework.TinyFrameworkToBeRenamed(int);
+    descriptor: (I)V
+    flags: (0x0001) ACC_PUBLIC
+    Code:
+      stack=4, locals=2, args_size=2
+         x: ldc           #x                 // class com/android/hoststubgen/test/tinyframework/TinyFrameworkToBeRenamed
+         x: ldc           #x                 // String <init>
+         x: ldc           #x                 // String (I)V
+         x: ldc           #x                 // String com.android.hoststubgen.hosthelper.HostTestUtils.logMethodCall
+         x: invokestatic  #x                 // Method com/android/hoststubgen/hosthelper/HostTestUtils.callMethodCallHook:(Ljava/lang/Class;Ljava/lang/String;Ljava/lang/String;Ljava/lang/String;)V
+        x: aload_0
+        x: invokespecial #x                 // Method java/lang/Object."<init>":()V
+        x: aload_0
+        x: iload_1
+        x: putfield      #x                 // Field mValue:I
+        x: return
+      LineNumberTable:
+      LocalVariableTable:
+        Start  Length  Slot  Name   Signature
+           11      10     0  this   Lcom/android/hoststubgen/test/tinyframework/TinyFrameworkToBeRenamed;
+           11      10     1 value   I
+    RuntimeVisibleAnnotations:
+      x: #x()
+        com.android.hoststubgen.hosthelper.HostStubGenKeptInStub
+      x: #x()
+        com.android.hoststubgen.hosthelper.HostStubGenKeptInImpl
+
+  public int getValue();
+    descriptor: ()I
+    flags: (0x0001) ACC_PUBLIC
+    Code:
+      stack=4, locals=1, args_size=1
+         x: ldc           #x                 // class com/android/hoststubgen/test/tinyframework/TinyFrameworkToBeRenamed
+         x: ldc           #x                 // String getValue
+         x: ldc           #x                 // String ()I
+         x: ldc           #x                 // String com.android.hoststubgen.hosthelper.HostTestUtils.logMethodCall
+         x: invokestatic  #x                 // Method com/android/hoststubgen/hosthelper/HostTestUtils.callMethodCallHook:(Ljava/lang/Class;Ljava/lang/String;Ljava/lang/String;Ljava/lang/String;)V
+        x: aload_0
+        x: getfield      #x                 // Field mValue:I
+        x: ireturn
+      LineNumberTable:
+      LocalVariableTable:
+        Start  Length  Slot  Name   Signature
+           11       5     0  this   Lcom/android/hoststubgen/test/tinyframework/TinyFrameworkToBeRenamed;
+    RuntimeVisibleAnnotations:
+      x: #x()
+        com.android.hoststubgen.hosthelper.HostStubGenKeptInStub
+      x: #x()
+        com.android.hoststubgen.hosthelper.HostStubGenKeptInImpl
+}
+SourceFile: "TinyFrameworkToBeRenamed.java"
+RuntimeVisibleAnnotations:
+  x: #x()
+    com.android.hoststubgen.hosthelper.HostStubGenKeptInStub
+  x: #x()
+    com.android.hoststubgen.hosthelper.HostStubGenKeptInImpl
+RuntimeInvisibleAnnotations:
+  x: #x()
+    android.hosttest.annotation.HostSideTestWholeClassStub
diff --git a/tools/hoststubgen/hoststubgen/test-tiny-framework/policy-override-tiny-framework.txt b/tools/hoststubgen/hoststubgen/test-tiny-framework/policy-override-tiny-framework.txt
index 530de43..75c9721 100644
--- a/tools/hoststubgen/hoststubgen/test-tiny-framework/policy-override-tiny-framework.txt
+++ b/tools/hoststubgen/hoststubgen/test-tiny-framework/policy-override-tiny-framework.txt
@@ -48,3 +48,9 @@
 # The following rules are the same as above
 # class com.android.hoststubgen.test.tinyframework.packagetest.A stub
 # class com.android.hoststubgen.test.tinyframework.packagetest.sub.A stub
+
+
+# "rename" takes a type internal name, so '/'s is used as a separator.
+# The leading / in the prefix is not needed (it'll be stripped), but it's added to make
+# sure the stripping works.
+rename ^.*/TinyFrameworkToBeRenamed$ /rename_prefix/
\ No newline at end of file
diff --git a/tools/hoststubgen/hoststubgen/test-tiny-framework/tiny-framework/src/com/android/hoststubgen/test/tinyframework/TinyFrameworkRenamedClassCaller.java b/tools/hoststubgen/hoststubgen/test-tiny-framework/tiny-framework/src/com/android/hoststubgen/test/tinyframework/TinyFrameworkRenamedClassCaller.java
new file mode 100644
index 0000000..31a164a
--- /dev/null
+++ b/tools/hoststubgen/hoststubgen/test-tiny-framework/tiny-framework/src/com/android/hoststubgen/test/tinyframework/TinyFrameworkRenamedClassCaller.java
@@ -0,0 +1,28 @@
+/*
+ * Copyright (C) 2023 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package com.android.hoststubgen.test.tinyframework;
+
+import android.hosttest.annotation.HostSideTestWholeClassStub;
+
+@HostSideTestWholeClassStub
+public class TinyFrameworkRenamedClassCaller {
+    /** Calls the class that'll be renamed. */
+    public static int foo(int value) {
+        // When TinyFrameworkToBeRenamed gets renamed, this callsite should be updated too,
+        // so this code should work as-is.
+        return new TinyFrameworkToBeRenamed(value).getValue();
+    }
+}
diff --git a/tools/hoststubgen/hoststubgen/test-tiny-framework/tiny-framework/src/com/android/hoststubgen/test/tinyframework/TinyFrameworkToBeRenamed.java b/tools/hoststubgen/hoststubgen/test-tiny-framework/tiny-framework/src/com/android/hoststubgen/test/tinyframework/TinyFrameworkToBeRenamed.java
new file mode 100644
index 0000000..1430bcb
--- /dev/null
+++ b/tools/hoststubgen/hoststubgen/test-tiny-framework/tiny-framework/src/com/android/hoststubgen/test/tinyframework/TinyFrameworkToBeRenamed.java
@@ -0,0 +1,34 @@
+/*
+ * Copyright (C) 2023 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package com.android.hoststubgen.test.tinyframework;
+
+import android.hosttest.annotation.HostSideTestWholeClassStub;
+
+/**
+ * This class will be renamed by the "rename" directive in the policy file.
+ */
+@HostSideTestWholeClassStub
+public class TinyFrameworkToBeRenamed {
+    private final int mValue;
+
+    public TinyFrameworkToBeRenamed(int value) {
+        mValue = value;
+    }
+
+    public int getValue() {
+        return mValue;
+    }
+}
diff --git a/tools/hoststubgen/hoststubgen/test-tiny-framework/tiny-test/src/com/android/hoststubgen/test/tinyframework/TinyFrameworkClassTest.java b/tools/hoststubgen/hoststubgen/test-tiny-framework/tiny-test/src/com/android/hoststubgen/test/tinyframework/TinyFrameworkClassTest.java
index 37925e8..bf0f654 100644
--- a/tools/hoststubgen/hoststubgen/test-tiny-framework/tiny-test/src/com/android/hoststubgen/test/tinyframework/TinyFrameworkClassTest.java
+++ b/tools/hoststubgen/hoststubgen/test-tiny-framework/tiny-test/src/com/android/hoststubgen/test/tinyframework/TinyFrameworkClassTest.java
@@ -334,4 +334,9 @@
     public void testRFileHeuristics() {
         assertThat(Nested.ARRAY.length).isEqualTo(1);
     }
+
+    @Test
+    public void testTypeRename() {
+        assertThat(TinyFrameworkRenamedClassCaller.foo(1)).isEqualTo(1);
+    }
 }
diff --git a/tools/hoststubgen/scripts/dump-jar b/tools/hoststubgen/scripts/dump-jar
index 992665e..fe546fe 100755
--- a/tools/hoststubgen/scripts/dump-jar
+++ b/tools/hoststubgen/scripts/dump-jar
@@ -97,6 +97,7 @@
     # - Remove the constant pool
     # - Remove the line number table
     # - Some other transient lines
+    # - Sometimes the javap shows mysterious warnings, so remove them too.
     #
     # `/PATTERN-1/,/PATTERN-1/{//!d}` is a trick to delete lines between two patterns, without
     # the start and the end lines.
@@ -106,7 +107,8 @@
         -e '/^ *line *[0-9][0-9]*: *[0-9][0-9]*$/d' \
         -e '/SHA-256 checksum/d' \
         -e '/Last modified/d' \
-        -e '/^Classfile jar/d'
+        -e '/^Classfile jar/d' \
+        -e '/\[warning\]/d'
   else
     cat # Print as-is.
   fi