src/hotspot/cpu/aarch64/interp_masm_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:

*** 166,176 ****
    ldrh(reg, Address(rbcp, bcp_offset));
    rev16(reg, reg);
  }
  
  void InterpreterMacroAssembler::get_dispatch() {
!   unsigned long offset;
    adrp(rdispatch, ExternalAddress((address)Interpreter::dispatch_table()), offset);
    lea(rdispatch, Address(rdispatch, offset));
  }
  
  void InterpreterMacroAssembler::get_cache_index_at_bcp(Register index,
--- 166,176 ----
    ldrh(reg, Address(rbcp, bcp_offset));
    rev16(reg, reg);
  }
  
  void InterpreterMacroAssembler::get_dispatch() {
!   uint64_t offset;
    adrp(rdispatch, ExternalAddress((address)Interpreter::dispatch_table()), offset);
    lea(rdispatch, Address(rdispatch, offset));
  }
  
  void InterpreterMacroAssembler::get_cache_index_at_bcp(Register index,
*** 763,773 ****
      // NOTE: the oopMark is in swap_reg %r0 as the result of cmpxchg
      // NOTE2: aarch64 does not like to subtract sp from rn so take a
      // copy
      mov(rscratch1, sp);
      sub(swap_reg, swap_reg, rscratch1);
!     ands(swap_reg, swap_reg, (unsigned long)(7 - os::vm_page_size()));
  
      // Save the test result, for recursive case, the result is zero
      str(swap_reg, Address(lock_reg, mark_offset));
  
      if (PrintBiasedLockingStatistics) {
--- 763,773 ----
      // NOTE: the oopMark is in swap_reg %r0 as the result of cmpxchg
      // NOTE2: aarch64 does not like to subtract sp from rn so take a
      // copy
      mov(rscratch1, sp);
      sub(swap_reg, swap_reg, rscratch1);
!     ands(swap_reg, swap_reg, (uint64_t)(7 - os::vm_page_size()));
  
      // Save the test result, for recursive case, the result is zero
      str(swap_reg, Address(lock_reg, mark_offset));
  
      if (PrintBiasedLockingStatistics) {