Add support for ARMv8 (64-bit) on Android

4 files changed, 43 insertions, 14 deletions

diff --git a/platform/android/SCsub b/platform/android/SCsub
index 7fb3c876be..b124a1a5a8 100644
--- a/platform/android/SCsub
+++ b/platform/android/SCsub
@@ -141,6 +141,8 @@ if env['android_arch'] == 'armv6':
     lib_arch_dir = 'armeabi'
 elif env['android_arch'] == 'armv7':
     lib_arch_dir = 'armeabi-v7a'
+elif env['android_arch'] == 'arm64v8':
+    lib_arch_dir = 'arm64-v8a'
 elif env['android_arch'] == 'x86':
     lib_arch_dir = 'x86'
 else:
diff --git a/platform/android/detect.py b/platform/android/detect.py
index 55b7052393..437a092323 100644
--- a/platform/android/detect.py
+++ b/platform/android/detect.py
@@ -22,7 +22,7 @@ def get_opts():
     return [
         ('ANDROID_NDK_ROOT', 'Path to the Android NDK', os.environ.get("ANDROID_NDK_ROOT", 0)),
         ('ndk_platform', 'Target platform (android-<api>, e.g. "android-18")', "android-18"),
-        ('android_arch', 'Target architecture (armv7/armv6/x86)', "armv7"),
+        ('android_arch', 'Target architecture (armv7/armv6/arm64v8/x86)', "armv7"),
         ('android_neon', 'Enable NEON support (armv7 only)', "yes"),
         ('android_stl', 'Enable Android STL support (for modules)', "no")
     ]
@@ -89,7 +89,7 @@ def configure(env):
 
     ## Architecture
 
-    if env['android_arch'] not in ['armv7', 'armv6', 'x86']:
+    if env['android_arch'] not in ['armv7', 'armv6', 'arm64v8', 'x86']:
         env['android_arch'] = 'armv7'
 
     neon_text = ""
@@ -99,18 +99,21 @@ def configure(env):
 
     can_vectorize = True
     if env['android_arch'] == 'x86':
+        env['ARCH'] = 'arch-x86'
         env.extra_suffix = ".x86" + env.extra_suffix
         target_subpath = "x86-4.9"
         abi_subpath = "i686-linux-android"
         arch_subpath = "x86"
         env["x86_libtheora_opt_gcc"] = True
     elif env['android_arch'] == 'armv6':
+        env['ARCH'] = 'arch-arm'
         env.extra_suffix = ".armv6" + env.extra_suffix
         target_subpath = "arm-linux-androideabi-4.9"
         abi_subpath = "arm-linux-androideabi"
         arch_subpath = "armeabi"
         can_vectorize = False
     elif env["android_arch"] == "armv7":
+        env['ARCH'] = 'arch-arm'
         target_subpath = "arm-linux-androideabi-4.9"
         abi_subpath = "arm-linux-androideabi"
         arch_subpath = "armeabi-v7a"
@@ -118,6 +121,12 @@ def configure(env):
             env.extra_suffix = ".armv7.neon" + env.extra_suffix
         else:
             env.extra_suffix = ".armv7" + env.extra_suffix
+    elif env["android_arch"] == "arm64v8":
+        env['ARCH'] = 'arch-arm64'
+        target_subpath = "aarch64-linux-android-4.9"
+        abi_subpath = "aarch64-linux-android"
+        arch_subpath = "arm64-v8a"
+        env.extra_suffix = ".armv8" + env.extra_suffix
 
     ## Build type
 
@@ -149,6 +158,8 @@ def configure(env):
     elif (sys.platform.startswith('win')):
         if (platform.machine().endswith('64')):
             host_subpath = "windows-x86_64"
+            if env["android_arch"] == "arm64v8":
+                mt_link = False
         else:
             mt_link = False
             host_subpath = "windows"
@@ -166,11 +177,6 @@ def configure(env):
     env['RANLIB'] = tools_path + "/ranlib"
     env['AS'] = tools_path + "/as"
 
-    if env['android_arch'] == 'x86':
-        env['ARCH'] = 'arch-x86'
-    else:
-        env['ARCH'] = 'arch-arm'
-
     sysroot = env["ANDROID_NDK_ROOT"] + "/platforms/" + env['ndk_platform'] + "/" + env['ARCH']
     common_opts = ['-fno-integrated-as', '-gcc-toolchain', gcc_toolchain_path]
 
@@ -199,6 +205,11 @@ def configure(env):
         else:
             env.Append(CPPFLAGS=['-mfpu=vfpv3-d16'])
 
+    elif env["android_arch"] == "arm64v8":
+        target_opts = ['-target', 'aarch64-none-linux-android']
+        env.Append(CPPFLAGS=['-D__ARM_ARCH_8A__'])
+        env.Append(CPPFLAGS=['-mfix-cortex-a53-835769'])
+
     env.Append(CPPFLAGS=target_opts)
     env.Append(CPPFLAGS=common_opts)
 
@@ -213,7 +224,8 @@ def configure(env):
     ## Link flags
 
     env['LINKFLAGS'] = ['-shared', '--sysroot=' + sysroot, '-Wl,--warn-shared-textrel']
-    env.Append(LINKFLAGS=string.split('-Wl,--fix-cortex-a8'))
+    if env["android_arch"] == "armv7":
+        env.Append(LINKFLAGS=string.split('-Wl,--fix-cortex-a8'))
     env.Append(LINKFLAGS=string.split('-Wl,--no-undefined -Wl,-z,noexecstack -Wl,-z,relro -Wl,-z,now'))
     env.Append(LINKFLAGS=string.split('-Wl,-soname,libgodot_android.so -Wl,--gc-sections'))
     if mt_link:
diff --git a/platform/android/export/export.cpp b/platform/android/export/export.cpp
index 97f239c4da..aa6b7e6c6d 100644
--- a/platform/android/export/export.cpp
+++ b/platform/android/export/export.cpp
@@ -219,6 +219,7 @@ class EditorExportPlatformAndroid : public EditorExportPlatform {
 	bool use_32_fb;
 	bool immersive;
 	bool export_arm;
+	bool export_arm64;
 	bool export_x86;
 	String apk_expansion_salt;
 	String apk_expansion_pkey;
@@ -319,6 +320,8 @@ bool EditorExportPlatformAndroid::_set(const StringName& p_name, const Variant&
 		_signed=p_value;
 	else if (n=="architecture/arm")
 		export_arm=p_value;
+	else if (n=="architecture/arm64")
+		export_arm64=p_value;
 	else if (n=="architecture/x86")
 		export_x86=p_value;
 	else if (n=="screen/use_32_bits_view")
@@ -392,6 +395,8 @@ bool EditorExportPlatformAndroid::_get(const StringName& p_name,Variant &r_ret)
 		r_ret=_signed;
 	else if (n=="architecture/arm")
 		r_ret=export_arm;
+	else if (n=="architecture/arm64")
+		r_ret=export_arm64;
 	else if (n=="architecture/x86")
 		r_ret=export_x86;
 	else if (n=="screen/use_32_bits_view")
@@ -1164,6 +1169,10 @@ Error EditorExportPlatformAndroid::export_project(const String& p_path, bool p_d
 			skip=true;
 		}
 
+		if (file.match("lib/arm64*/libgodot_android.so") && !export_arm64) {
+			skip = true;
+		}
+
 		if (file.begins_with("META-INF") && _signed) {
 			skip=true;
 		}
@@ -1801,6 +1810,7 @@ EditorExportPlatformAndroid::EditorExportPlatformAndroid() {
 	immersive=true;
 
 	export_arm=true;
+	export_arm64=false;
 	export_x86=false;
 
 
@@ -3162,6 +3172,7 @@ public:
 
 		bool export_x86 = p_preset->get("architecture/x86");
 		bool export_arm = p_preset->get("architecture/arm");
+		bool export_arm64 = p_preset->get("architecture/arm64");
 
 		bool use_32_fb = p_preset->get("screen/use_32_bits_view");
 		bool immersive = p_preset->get("screen/immersive_mode");
@@ -3253,6 +3264,10 @@ public:
 				skip = true;
 			}
 
+			if (file.match("lib/arm64*/libgodot_android.so") && !export_arm64) {
+				skip = true;
+			}
+
 			if (file.begins_with("META-INF") && _signed) {
 				skip = true;
 			}
diff --git a/platform/android/java_class_wrapper.cpp b/platform/android/java_class_wrapper.cpp
index 56a27fa0e0..52ff9cd562 100644
--- a/platform/android/java_class_wrapper.cpp
+++ b/platform/android/java_class_wrapper.cpp
@@ -190,7 +190,7 @@ bool JavaClass::_call_method(JavaObject *p_instance, const StringName &p_method,
 				argv[i].i = *p_args[i];
 			} break;
 			case ARG_TYPE_LONG: {
-				argv[i].j = *p_args[i];
+				argv[i].j = (int64_t)*p_args[i];
 			} break;
 			case ARG_TYPE_FLOAT: {
 				argv[i].f = *p_args[i];
@@ -350,7 +350,7 @@ bool JavaClass::_call_method(JavaObject *p_instance, const StringName &p_method,
 				Array arr = *p_args[i];
 				jlongArray a = env->NewLongArray(arr.size());
 				for (int j = 0; j < arr.size(); j++) {
-					jlong val = arr[j];
+					jlong val = (int64_t)arr[j];
 					env->SetLongArrayRegion(a, j, 1, &val);
 				}
 				argv[i].l = a;
@@ -460,9 +460,9 @@ bool JavaClass::_call_method(JavaObject *p_instance, const StringName &p_method,
 		case ARG_TYPE_LONG: {
 
 			if (method->_static) {
-				ret = env->CallStaticLongMethodA(_class, method->method, argv);
+				ret = (int64_t)env->CallStaticLongMethodA(_class, method->method, argv);
 			} else {
-				ret = env->CallLongMethodA(p_instance->instance, method->method, argv);
+				ret = (int64_t)env->CallLongMethodA(p_instance->instance, method->method, argv);
 			}
 
 		} break;
@@ -680,7 +680,7 @@ bool JavaClass::_convert_object_to_variant(JNIEnv *env, jobject obj, Variant &va
 		} break;
 		case ARG_TYPE_LONG | ARG_NUMBER_CLASS_BIT: {
 
-			var = env->CallLongMethod(obj, JavaClassWrapper::singleton->Long_longValue);
+			var = (int64_t)env->CallLongMethod(obj, JavaClassWrapper::singleton->Long_longValue);
 			return true;
 
 		} break;
@@ -802,7 +802,7 @@ bool JavaClass::_convert_object_to_variant(JNIEnv *env, jobject obj, Variant &va
 
 				jlong val;
 				env->GetLongArrayRegion((jlongArray)arr, 0, 1, &val);
-				ret.push_back(val);
+				ret.push_back((int64_t)val);
 			}
 
 			var = ret;