#3739: Support aarch64 natives

native/compile-native-arm.sh

@@ -0,0 +1,29 @@
+#!/bin/sh
+
+set -eu
+
+CWD=$(pwd)
+
+echo "Compiling mbedtls"
+(cd mbedtls && CFLAGS="-fPIC -I$CWD/src/main/c -DMBEDTLS_USER_CONFIG_FILE='<mbedtls_custom_config.h>'" make CC=aarch64-linux-gnu-gcc AR=aarch64-linux-gnu-ar no_test)
+
+echo "Compiling zlib"
+(cd zlib && CFLAGS="-fPIC -DNO_GZIP" CC=aarch64-linux-gnu-gcc CHOST=arm64 ./configure --target="aarch64" --static && make CFLAGS="-fPIC -march=armv8-a+crc" CC=aarch64-linux-gnu-gcc AR=aarch64-linux-gnu-ar)
+
+CC="aarch64-linux-gnu-gcc"
+CFLAGS="-c -fPIC -O3 -Wall -Werror -I$JAVA_HOME/include/ -I$JAVA_HOME/include/linux/"
+LDFLAGS="-shared"
+
+echo "Compiling bungee"
+$CC $CFLAGS -o shared.o src/main/c/shared.c
+$CC $CFLAGS -Imbedtls/include -o NativeCipherImpl.o src/main/c/NativeCipherImpl.c
+$CC $CFLAGS -Izlib -o NativeCompressImpl.o src/main/c/NativeCompressImpl.c
+
+echo "Linking native-cipher-arm.so"
+$CC $LDFLAGS -o src/main/resources/native-cipher-arm.so shared.o NativeCipherImpl.o mbedtls/library/libmbedcrypto.a
+
+echo "Linking native-compress-arm.so"
+$CC $LDFLAGS -o src/main/resources/native-compress-arm.so shared.o NativeCompressImpl.o zlib/libz.a
+
+echo "Cleaning up"
+rm shared.o NativeCipherImpl.o NativeCompressImpl.o

native/src/main/c/NativeCompressImpl.c

@@ -3,7 +3,9 @@
 
 #include <zlib.h>
 #include "shared.h"
+#if !defined(__aarch64__)
 #include "cpuid_helper.h"
+#endif
 #include "net_md_5_bungee_jni_zlib_NativeCompressImpl.h"
 
 typedef unsigned char byte;
@@ -28,7 +30,11 @@ jint throwException(JNIEnv *env, const char* message, int err) {
 }
 
 JNIEXPORT jboolean JNICALL Java_net_md_15_bungee_jni_zlib_NativeCompressImpl_checkSupported(JNIEnv* env, jobject obj) {
+	#if !defined(__aarch64__)
 	return (jboolean) checkCompressionNativesSupport();
+	#else
+	return JNI_TRUE;
+	#endif
 }
 
 void JNICALL Java_net_md_15_bungee_jni_zlib_NativeCompressImpl_reset(JNIEnv* env, jobject obj, jlong ctx, jboolean compress) {

native/src/main/java/net/md_5/bungee/jni/NativeCode.java

@@ -43,6 +43,7 @@ public final class NativeCode<T>
     {
         if ( enableNativeFlag && !loaded && isSupported() )
         {
+            String name = this.name + ( isAarch64() ? "-arm" : "" );
             String fullName = "bungeecord-" + name;
 
             try
@@ -94,6 +95,16 @@ public final class NativeCode<T>
 
     public static boolean isSupported()
     {
-        return "Linux".equals( System.getProperty( "os.name" ) ) && "amd64".equals( System.getProperty( "os.arch" ) );
+        return "Linux".equals( System.getProperty( "os.name" ) ) && ( isAmd64() || isAarch64() );
+    }
+
+    private static boolean isAmd64()
+    {
+        return "amd64".equals( System.getProperty( "os.arch" ) );
+    }
+
+    private static boolean isAarch64()
+    {
+        return "aarch64".equals( System.getProperty( "os.arch" ) );
     }
 }