src/hotspot/cpu/aarch64/gc/shared/barrierSetAssembler_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:

*** 176,195 ****
      Register end = t1;
      Register heap_end = rscratch2;
      Label retry;
      __ bind(retry);
      {
!       unsigned long offset;
        __ adrp(rscratch1, ExternalAddress((address) Universe::heap()->end_addr()), offset);
        __ ldr(heap_end, Address(rscratch1, offset));
      }
  
      ExternalAddress heap_top((address) Universe::heap()->top_addr());
  
      // Get the current top of the heap
      {
!       unsigned long offset;
        __ adrp(rscratch1, heap_top, offset);
        // Use add() here after ARDP, rather than lea().
        // lea() does not generate anything if its offset is zero.
        // However, relocs expect to find either an ADD or a load/store
        // insn after an ADRP.  add() always generates an ADD insn, even
--- 176,195 ----
      Register end = t1;
      Register heap_end = rscratch2;
      Label retry;
      __ bind(retry);
      {
!       uint64_t offset;
        __ adrp(rscratch1, ExternalAddress((address) Universe::heap()->end_addr()), offset);
        __ ldr(heap_end, Address(rscratch1, offset));
      }
  
      ExternalAddress heap_top((address) Universe::heap()->top_addr());
  
      // Get the current top of the heap
      {
!       uint64_t offset;
        __ adrp(rscratch1, heap_top, offset);
        // Use add() here after ARDP, rather than lea().
        // lea() does not generate anything if its offset is zero.
        // However, relocs expect to find either an ADD or a load/store
        // insn after an ADRP.  add() always generates an ADD insn, even