src/hotspot/cpu/x86/stubGenerator_x86_32.cpp

@@ -427,42 +427,10 @@
      __ jmp(handler_addr);
  
      return start;
    }
  
- 
-   //----------------------------------------------------------------------------------------------------
-   // Implementation of int32_t atomic_xchg(int32_t exchange_value, volatile int32_t* dest)
-   // used by Atomic::xchg(volatile int32_t* dest, int32_t exchange_value)
-   //
-   // xchg exists as far back as 8086, lock needed for MP only
-   // Stack layout immediately after call:
-   //
-   // 0 [ret addr ] <--- rsp
-   // 1 [  ex     ]
-   // 2 [  dest   ]
-   //
-   // Result:   *dest <- ex, return (old *dest)
-   //
-   // Note: win32 does not currently use this code
- 
-   address generate_atomic_xchg() {
-     StubCodeMark mark(this, "StubRoutines", "atomic_xchg");
-     address start = __ pc();
- 
-     __ push(rdx);
-     Address exchange(rsp, 2 * wordSize);
-     Address dest_addr(rsp, 3 * wordSize);
-     __ movl(rax, exchange);
-     __ movptr(rdx, dest_addr);
-     __ xchgl(rax, Address(rdx, 0));
-     __ pop(rdx);
-     __ ret(0);
- 
-     return start;
-   }
- 
    //----------------------------------------------------------------------------------------------------
    // Support for void verify_mxcsr()
    //
    // This routine is used with -Xcheck:jni to verify that native
    // JNI code does not return to Java code without restoring the

@@ -3795,13 +3763,10 @@
      StubRoutines::_call_stub_entry              =
        generate_call_stub(StubRoutines::_call_stub_return_address);
      // is referenced by megamorphic call
      StubRoutines::_catch_exception_entry        = generate_catch_exception();
  
-     // These are currently used by Solaris/Intel
-     StubRoutines::_atomic_xchg_entry            = generate_atomic_xchg();
- 
      // platform dependent
      create_control_words();
  
      StubRoutines::x86::_verify_mxcsr_entry                 = generate_verify_mxcsr();
      StubRoutines::x86::_verify_fpu_cntrl_wrd_entry         = generate_verify_fpu_cntrl_wrd();