src/hotspot/cpu/x86/stubGenerator_x86_64.cpp

*** 608,618 ****
    address generate_atomic_cmpxchg() {
      StubCodeMark mark(this, "StubRoutines", "atomic_cmpxchg");
      address start = __ pc();
  
      __ movl(rax, c_rarg2);
!    if ( os::is_MP() ) __ lock();
      __ cmpxchgl(c_rarg0, Address(c_rarg1, 0));
      __ ret(0);
  
      return start;
    }
--- 608,618 ----
    address generate_atomic_cmpxchg() {
      StubCodeMark mark(this, "StubRoutines", "atomic_cmpxchg");
      address start = __ pc();
  
      __ movl(rax, c_rarg2);
!     __ lock();
      __ cmpxchgl(c_rarg0, Address(c_rarg1, 0));
      __ ret(0);
  
      return start;
    }
*** 634,644 ****
    address generate_atomic_cmpxchg_byte() {
      StubCodeMark mark(this, "StubRoutines", "atomic_cmpxchg_byte");
      address start = __ pc();
  
      __ movsbq(rax, c_rarg2);
!    if ( os::is_MP() ) __ lock();
      __ cmpxchgb(c_rarg0, Address(c_rarg1, 0));
      __ ret(0);
  
      return start;
    }
--- 634,644 ----
    address generate_atomic_cmpxchg_byte() {
      StubCodeMark mark(this, "StubRoutines", "atomic_cmpxchg_byte");
      address start = __ pc();
  
      __ movsbq(rax, c_rarg2);
!     __ lock();
      __ cmpxchgb(c_rarg0, Address(c_rarg1, 0));
      __ ret(0);
  
      return start;
    }
*** 660,670 ****
    address generate_atomic_cmpxchg_long() {
      StubCodeMark mark(this, "StubRoutines", "atomic_cmpxchg_long");
      address start = __ pc();
  
      __ movq(rax, c_rarg2);
!    if ( os::is_MP() ) __ lock();
      __ cmpxchgq(c_rarg0, Address(c_rarg1, 0));
      __ ret(0);
  
      return start;
    }
--- 660,670 ----
    address generate_atomic_cmpxchg_long() {
      StubCodeMark mark(this, "StubRoutines", "atomic_cmpxchg_long");
      address start = __ pc();
  
      __ movq(rax, c_rarg2);
!     __ lock();
      __ cmpxchgq(c_rarg0, Address(c_rarg1, 0));
      __ ret(0);
  
      return start;
    }
*** 681,691 ****
    address generate_atomic_add() {
      StubCodeMark mark(this, "StubRoutines", "atomic_add");
      address start = __ pc();
  
      __ movl(rax, c_rarg0);
!    if ( os::is_MP() ) __ lock();
      __ xaddl(Address(c_rarg1, 0), c_rarg0);
      __ addl(rax, c_rarg0);
      __ ret(0);
  
      return start;
--- 681,691 ----
    address generate_atomic_add() {
      StubCodeMark mark(this, "StubRoutines", "atomic_add");
      address start = __ pc();
  
      __ movl(rax, c_rarg0);
!     __ lock();
      __ xaddl(Address(c_rarg1, 0), c_rarg0);
      __ addl(rax, c_rarg0);
      __ ret(0);
  
      return start;
*** 703,713 ****
    address generate_atomic_add_long() {
      StubCodeMark mark(this, "StubRoutines", "atomic_add_long");
      address start = __ pc();
  
      __ movptr(rax, c_rarg0); // Copy to eax we need a return value anyhow
!    if ( os::is_MP() ) __ lock();
      __ xaddptr(Address(c_rarg1, 0), c_rarg0);
      __ addptr(rax, c_rarg0);
      __ ret(0);
  
      return start;
--- 703,713 ----
    address generate_atomic_add_long() {
      StubCodeMark mark(this, "StubRoutines", "atomic_add_long");
      address start = __ pc();
  
      __ movptr(rax, c_rarg0); // Copy to eax we need a return value anyhow
!     __ lock();
      __ xaddptr(Address(c_rarg1, 0), c_rarg0);
      __ addptr(rax, c_rarg0);
      __ ret(0);
  
      return start;