https://openjdk.java.net/ 
public interface org.graalvm.compiler.hotspot.meta.HotSpotRegistersProvider
  minor version: 0
  major version: 59
  flags: flags: (0x0601) ACC_PUBLIC, ACC_INTERFACE, ACC_ABSTRACT
  this_class: org.graalvm.compiler.hotspot.meta.HotSpotRegistersProvider
  super_class: java.lang.Object
{
  public abstract jdk.vm.ci.code.Register getThreadRegister();
    descriptor: ()Ljdk/vm/ci/code/Register;
    flags: (0x0401) ACC_PUBLIC, ACC_ABSTRACT

  public abstract jdk.vm.ci.code.Register getHeapBaseRegister();
    descriptor: ()Ljdk/vm/ci/code/Register;
    flags: (0x0401) ACC_PUBLIC, ACC_ABSTRACT

  public abstract jdk.vm.ci.code.Register getStackPointerRegister();
    descriptor: ()Ljdk/vm/ci/code/Register;
    flags: (0x0401) ACC_PUBLIC, ACC_ABSTRACT
}
SourceFile: "HotSpotRegistersProvider.java"