src/share/vm/code/relocInfo.hpp

*** 1,7 ****
  /*
!  * Copyright (c) 1997, 2013, 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.
--- 1,7 ----
  /*
!  * Copyright (c) 1997, 2014, 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.
*** 208,217 ****
--- 208,222 ----
  //   This stub becomes the target of a static call which must be upgraded
  //   to a virtual call (because the callee is interpreted).
  //   See [About Offsets] below.
  //   //%note reloc_2
  //
+ // relocInfo::poll_[return_]type -- a safepoint poll
+ //   Value:  none
+ //   Instruction types: memory load or test
+ //   Data:  none
+ //
  // For example:
  //
  //   INSTRUCTIONS                        RELOC: TYPE    PREFIX DATA
  //   ------------                               ----    -----------
  // sethi      %hi(myObject),  R               oop_type [n(myObject)]
*** 441,450 ****
--- 446,460 ----
      offset_mask        = (1<<offset_width) - 1,
      format_mask        = (1<<format_width) - 1
    };
   public:
    enum {
+ #ifdef _LP64
+     // for use in format
+     // format_width must be at least 1 on _LP64
+     narrow_oop_in_const = 1,
+ #endif
      // Conservatively large estimate of maximum length (in shorts)
      // of any relocation record.
      // Extended format is length prefix, data words, and tag/offset suffix.
      length_limit       = 1 + 1 + (3*BytesPerWord/BytesPerShort) + 1,
      have_format        = format_width > 0
*** 760,769 ****
--- 770,782 ----
        x1 = relocInfo::jint_data_at(2, dp, dlen);
      }
    }
  
   protected:
+   // platform-independent utility for patching constant section
+   void       const_set_data_value    (address x);
+   void       const_verify_data_value (address x);
    // platform-dependent utilities for decoding and patching instructions
    void       pd_set_data_value       (address x, intptr_t off, bool verify_only = false); // a set or mem-ref
    void       pd_verify_data_value    (address x, intptr_t off) { pd_set_data_value(x, off, true); }
    address    pd_call_destination     (address orig_addr = NULL);
    void       pd_set_call_destination (address x);
*** 870,886 ****
    virtual int    offset()                      { return 0; }
    address         value()                      = 0;
    void        set_value(address x)             { set_value(x, offset()); }
    void        set_value(address x, intptr_t o) {
      if (addr_in_const())
!       *(address*)addr() = x;
      else
        pd_set_data_value(x, o);
    }
    void        verify_value(address x) {
      if (addr_in_const())
!       assert(*(address*)addr() == x, "must agree");
      else
        pd_verify_data_value(x, offset());
    }
  
    // The "o" (displacement) argument is relevant only to split relocations
--- 883,899 ----
    virtual int    offset()                      { return 0; }
    address         value()                      = 0;
    void        set_value(address x)             { set_value(x, offset()); }
    void        set_value(address x, intptr_t o) {
      if (addr_in_const())
!       const_set_data_value(x);
      else
        pd_set_data_value(x, o);
    }
    void        verify_value(address x) {
      if (addr_in_const())
!       const_verify_data_value(x);
      else
        pd_verify_data_value(x, offset());
    }
  
    // The "o" (displacement) argument is relevant only to split relocations
*** 1316,1329 ****
    bool          is_data()                      { return true; }
    relocInfo::relocType type() { return relocInfo::poll_type; }
    void     fix_relocation_after_move(const CodeBuffer* src, CodeBuffer* dest);
  };
  
! class poll_return_Relocation : public Relocation {
!   bool          is_data()                      { return true; }
    relocInfo::relocType type() { return relocInfo::poll_return_type; }
-   void     fix_relocation_after_move(const CodeBuffer* src, CodeBuffer* dest);
  };
  
  // We know all the xxx_Relocation classes, so now we can define these:
  #define EACH_CASE(name)                                         \
  inline name##_Relocation* RelocIterator::name##_reloc() {       \
--- 1329,1340 ----
    bool          is_data()                      { return true; }
    relocInfo::relocType type() { return relocInfo::poll_type; }
    void     fix_relocation_after_move(const CodeBuffer* src, CodeBuffer* dest);
  };
  
! class poll_return_Relocation : public poll_Relocation {
    relocInfo::relocType type() { return relocInfo::poll_return_type; }
  };
  
  // We know all the xxx_Relocation classes, so now we can define these:
  #define EACH_CASE(name)                                         \
  inline name##_Relocation* RelocIterator::name##_reloc() {       \