refine

native_bridge/Dockerfile

@@ -0,0 +1,7 @@
+ARG BASE_IMAGE
+FROM $BASE_IMAGE
+
+ADD native-bridge.tar /
+
+# use factory.prop to override prop
+COPY factory.prop /factory/factory.prop

native_bridge/README.md

@@ -0,0 +1,35 @@
+# Native Bridge Support in ReDroid
+
+There are several choose to support native bridge (typically for arm) in *ReDroid*
+- `libndk_translation` from Arm
+- `libhoudini` from Intel
+- `QEMU`
+
+Prepare the resource and build the image.
+And run `docker build --build-arg BASE_IMAGE=<Base Image> .`
+
+```bash
+# example structure, be careful the file owner and mode
+
+system/
+├── bin
+│   ├── arm
+│   └── arm64
+├── etc
+│   ├── binfmt_misc
+│   └── init
+├── lib
+│   ├── arm
+│   └── libnb.so
+└── lib64
+    ├── arm64
+    └── libnb.so
+
+# grab libndk_translation from Android 11 Emulator
+find /system \( -name 'libndk_translation*' -o -name '*arm*' -o -name 'ndk_translation*' \) | tar -cf native-bridge.tar -T - 
+
+```
+
+Example: Patch llibndk_translation in ReDroid 11
+
+![Screenshot of ReDroid 11 with libndk_translation](./redroid_11_libndk_translation.png)

native_bridge/factory.prop

@@ -0,0 +1,10 @@
+ro.product.cpu.abilist=x86_64,arm64-v8a,x86,armeabi-v7a,armeabi
+ro.product.cpu.abilist64=x86_64,arm64-v8a
+ro.product.cpu.abilist32=x86,armeabi-v7a,armeabi
+ro.dalvik.vm.isa.arm=x86
+ro.dalvik.vm.isa.arm64=x86_64
+ro.enable.native.bridge.exec=1
+ro.dalvik.vm.native.bridge=libndk_translation.so
+
+# other vendor props
+ro.ndk_translation.version=0.2.2