src/java.base/share/classes/jdk/internal/foreign/abi/x64/sysv/SysVx64Linker.java

@@ -25,21 +25,28 @@
  package jdk.internal.foreign.abi.x64.sysv;
  
  
  import jdk.internal.foreign.abi.AbstractLinker;
  import jdk.internal.foreign.abi.LinkerOptions;
+ import jdk.internal.foreign.abi.SharedUtils;
  
  import java.lang.foreign.FunctionDescriptor;
+ import java.lang.foreign.MemoryLayout;
+ import java.lang.foreign.ValueLayout;
  import java.lang.invoke.MethodHandle;
  import java.lang.invoke.MethodType;
  import java.nio.ByteOrder;
+ import java.util.Map;
  
  /**
   * ABI implementation based on System V ABI AMD64 supplement v.0.99.6
   */
  public final class SysVx64Linker extends AbstractLinker {
  
+     static final Map<String, MemoryLayout> CANONICAL_LAYOUTS =
+             SharedUtils.canonicalLayouts(ValueLayout.JAVA_LONG, ValueLayout.JAVA_LONG, ValueLayout.JAVA_INT);
+ 
      public static SysVx64Linker getInstance() {
          final class Holder {
              private static final SysVx64Linker INSTANCE = new SysVx64Linker();
          }
  

@@ -62,6 +69,11 @@
  
      @Override
      protected ByteOrder linkerByteOrder() {
          return ByteOrder.LITTLE_ENDIAN;
      }
+ 
+     @Override
+     public Map<String, MemoryLayout> canonicalLayouts() {
+         return CANONICAL_LAYOUTS;
+     }
  }