8080776: ARM 32 bit binaries do not run on 64 bit ARM v8 hardware

Need to know arm cpu type earlier in the init sequence to avoid illegal instruction

Reviewed-by: dholmes, dlong, bdelsart

hotspot/src/share/vm/runtime/thread.cpp

@@ -3273,6 +3273,9 @@ void Threads::initialize_jsr292_core_classes(TRAPS) {
 jint Threads::create_vm(JavaVMInitArgs* args, bool* canTryAgain) {
   extern void JDK_Version_init();
 
+  // Preinitialize version info.
+  VM_Version::early_initialize();
+
   // Check version
   if (!is_supported_jni_version(args->version)) return JNI_EVERSION;
 

hotspot/src/share/vm/runtime/vm_version.hpp

@@ -58,6 +58,13 @@ class Abstract_VM_Version: AllStatic {
  public:
   static void initialize();
 
+  // This allows for early initialization of VM_Version information
+  // that may be needed later in the initialization sequence but before
+  // full VM_Version initialization is possible. It can not depend on any
+  // other part of the VM being initialized when called. Platforms that
+  // need to specialize this define VM_Version::early_initialize().
+  static void early_initialize() { }
+
   // Name
   static const char* vm_name();
   // Vendor