src/hotspot/cpu/x86/macroAssembler_x86.hpp

@@ -1,7 +1,7 @@
  /*
-  * Copyright (c) 1997, 2022, Oracle and/or its affiliates. All rights reserved.
+  * Copyright (c) 1997, 2024, Oracle and/or its affiliates. All rights reserved.
   * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   *
   * This code is free software; you can redistribute it and/or modify it
   * under the terms of the GNU General Public License version 2 only, as
   * published by the Free Software Foundation.

@@ -146,10 +146,12 @@
  
    // Support for inc/dec with optimal instruction selection depending on value
  
    void increment(Register reg, int value = 1) { LP64_ONLY(incrementq(reg, value)) NOT_LP64(incrementl(reg, value)) ; }
    void decrement(Register reg, int value = 1) { LP64_ONLY(decrementq(reg, value)) NOT_LP64(decrementl(reg, value)) ; }
+   void increment(Address dst, int value = 1)  { LP64_ONLY(incrementq(dst, value)) NOT_LP64(incrementl(dst, value)) ; }
+   void decrement(Address dst, int value = 1)  { LP64_ONLY(decrementq(dst, value)) NOT_LP64(decrementl(dst, value)) ; }
  
    void decrementl(Address dst, int value = 1);
    void decrementl(Register reg, int value = 1);
  
    void decrementq(Register reg, int value = 1);

@@ -337,13 +339,24 @@
    void load_method_holder_cld(Register rresult, Register rmethod);
  
    void load_method_holder(Register holder, Register method);
  
    // oop manipulations
-   void load_klass(Register dst, Register src, Register tmp);
+   void load_klass(Register dst, Register src, Register tmp, bool null_check_src = false);
+ #ifdef _LP64
+   void load_nklass(Register dst, Register src);
+ #endif
    void store_klass(Register dst, Register src, Register tmp);
  
+   // Compares the Klass pointer of an object to a given Klass (which might be narrow,
+   // depending on UseCompressedClassPointers).
+   void cmp_klass(Register klass, Register dst, Register tmp);
+ 
+   // Compares the Klass pointer of two objects o1 and o2. Result is in the condition flags.
+   // Uses t1 and t2 as temporary registers.
+   void cmp_klass(Register src, Register dst, Register tmp1, Register tmp2);
+ 
    void access_load_at(BasicType type, DecoratorSet decorators, Register dst, Address src,
                        Register tmp1, Register thread_tmp);
    void access_store_at(BasicType type, DecoratorSet decorators, Address dst, Register src,
                         Register tmp1, Register tmp2);
  

@@ -1911,10 +1924,13 @@
  #endif // COMPILER2_OR_JVMCI
  
  #endif // _LP64
  
    void vallones(XMMRegister dst, int vector_len);
+ 
+   void lightweight_lock(Register obj, Register reg_rax, Register thread, Register tmp, Label& slow);
+   void lightweight_unlock(Register obj, Register reg_rax, Register thread, Register tmp, Label& slow);
  };
  
  /**
   * class SkipIfEqual:
   *