51     @Use(REG) private AllocatableValue handlerInCallerPc;
  52     @Use(REG) private AllocatableValue exception;
  53     @Use(REG) private AllocatableValue exceptionPc;
  54     private final Register thread;
  55     private final int isMethodHandleReturnOffset;
  56 
  57     public AArch64HotSpotJumpToExceptionHandlerInCallerOp(AllocatableValue handlerInCallerPc, AllocatableValue exception, AllocatableValue exceptionPc, int isMethodHandleReturnOffset,
  58                     Register thread, GraalHotSpotVMConfig config) {
  59         super(TYPE, config);
  60         this.handlerInCallerPc = handlerInCallerPc;
  61         this.exception = exception;
  62         this.exceptionPc = exceptionPc;
  63         this.isMethodHandleReturnOffset = isMethodHandleReturnOffset;
  64         this.thread = thread;
  65     }
  66 
  67     @Override
  68     public void emitCode(CompilationResultBuilder crb, AArch64MacroAssembler masm) {
  69         leaveFrame(crb, masm, /* emitSafepoint */false);
  70 

  71         // Restore sp from fp if the exception PC is a method handle call site.
  72         try (ScratchRegister sc = masm.getScratchRegister()) {
  73             Register scratch = sc.getRegister();
  74             AArch64Address address = masm.makeAddress(thread, isMethodHandleReturnOffset, scratch, 4, /* allowOverwrite */false);
  75             masm.ldr(32, scratch, address);
  76             Label noRestore = new Label();
  77             masm.cbz(32, scratch, noRestore);
  78             masm.mov(64, sp, fp);
  79             masm.bind(noRestore);
  80         }


  81         masm.jmp(asRegister(handlerInCallerPc));
  82     }
  83 }

  51     @Use(REG) private AllocatableValue handlerInCallerPc;
  52     @Use(REG) private AllocatableValue exception;
  53     @Use(REG) private AllocatableValue exceptionPc;
  54     private final Register thread;
  55     private final int isMethodHandleReturnOffset;
  56 
  57     public AArch64HotSpotJumpToExceptionHandlerInCallerOp(AllocatableValue handlerInCallerPc, AllocatableValue exception, AllocatableValue exceptionPc, int isMethodHandleReturnOffset,
  58                     Register thread, GraalHotSpotVMConfig config) {
  59         super(TYPE, config);
  60         this.handlerInCallerPc = handlerInCallerPc;
  61         this.exception = exception;
  62         this.exceptionPc = exceptionPc;
  63         this.isMethodHandleReturnOffset = isMethodHandleReturnOffset;
  64         this.thread = thread;
  65     }
  66 
  67     @Override
  68     public void emitCode(CompilationResultBuilder crb, AArch64MacroAssembler masm) {
  69         leaveFrame(crb, masm, /* emitSafepoint */false);
  70 
  71         if (System.getProperty("java.specification.version").compareTo("1.8") < 0) {
  72             // Restore sp from fp if the exception PC is a method handle call site.
  73             try (ScratchRegister sc = masm.getScratchRegister()) {
  74                 Register scratch = sc.getRegister();
  75                 AArch64Address address = masm.makeAddress(thread, isMethodHandleReturnOffset, scratch, 4, /* allowOverwrite */false);
  76                 masm.ldr(32, scratch, address);
  77                 Label noRestore = new Label();
  78                 masm.cbz(32, scratch, noRestore);
  79                 masm.mov(64, sp, fp);
  80                 masm.bind(noRestore);
  81             }
  82         }
  83 
  84         masm.jmp(asRegister(handlerInCallerPc));
  85     }
  86 }