src/hotspot/cpu/aarch64/jniFastGetField_aarch64.cpp

8248238: Adding Windows support to OpenJDK on AArch64

Summary: LP64 vs LLP64 changes to add Windows support

Contributed-by: Monica Beckwith <monica.beckwith@microsoft.com>, Ludovic Henry <luhenry@microsoft.com>
Reviewed-by:

*** 71,81 ****
    MacroAssembler* masm = new MacroAssembler(&cbuf);
    address fast_entry = __ pc();
  
    Label slow;
  
!   unsigned long offset;
    __ adrp(rcounter_addr,
            SafepointSynchronize::safepoint_counter_addr(), offset);
    Address safepoint_counter_addr(rcounter_addr, offset);
    __ ldrw(rcounter, safepoint_counter_addr);
    __ tbnz(rcounter, 0, slow);
--- 71,81 ----
    MacroAssembler* masm = new MacroAssembler(&cbuf);
    address fast_entry = __ pc();
  
    Label slow;
  
!   uint64_t offset;
    __ adrp(rcounter_addr,
            SafepointSynchronize::safepoint_counter_addr(), offset);
    Address safepoint_counter_addr(rcounter_addr, offset);
    __ ldrw(rcounter, safepoint_counter_addr);
    __ tbnz(rcounter, 0, slow);
*** 86,96 ****
      // Using barrier to order wrt. JVMTI check and load of result.
      __ membar(Assembler::LoadLoad);
  
      // Check to see if a field access watch has been set before we
      // take the fast path.
!     unsigned long offset2;
      __ adrp(result,
              ExternalAddress((address) JvmtiExport::get_field_access_count_addr()),
              offset2);
      __ ldrw(result, Address(result, offset2));
      __ cbnzw(result, slow);
--- 86,96 ----
      // Using barrier to order wrt. JVMTI check and load of result.
      __ membar(Assembler::LoadLoad);
  
      // Check to see if a field access watch has been set before we
      // take the fast path.
!     uint64_t offset2;
      __ adrp(result,
              ExternalAddress((address) JvmtiExport::get_field_access_count_addr()),
              offset2);
      __ ldrw(result, Address(result, offset2));
      __ cbnzw(result, slow);