15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  *
  23  */
  24 
  25 #ifndef SHARE_VM_CODE_PCDESC_HPP
  26 #define SHARE_VM_CODE_PCDESC_HPP
  27 
  28 #include "memory/allocation.hpp"
  29 
  30 // PcDescs map a physical PC (given as offset from start of nmethod) to
  31 // the corresponding source scope and byte code index.
  32 
  33 class CompiledMethod;
  34 
  35 class PcDesc VALUE_OBJ_CLASS_SPEC {
  36   friend class VMStructs;
  37  private:
  38   int _pc_offset;           // offset from start of nmethod
  39   int _scope_decode_offset; // offset for scope in nmethod
  40   int _obj_decode_offset;
  41 
  42   enum {
  43     PCDESC_reexecute               = 1 << 0,
  44     PCDESC_is_method_handle_invoke = 1 << 1,
  45     PCDESC_return_oop              = 1 << 2,
  46     PCDESC_rethrow_exception       = 1 << 3
  47   };
  48 
  49   int _flags;
  50 
  51   void set_flag(int mask, bool z) {
  52     _flags = z ? (_flags | mask) : (_flags & ~mask);
  53   }
  54 
  55  public:

  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  *
  23  */
  24 
  25 #ifndef SHARE_VM_CODE_PCDESC_HPP
  26 #define SHARE_VM_CODE_PCDESC_HPP
  27 
  28 #include "memory/allocation.hpp"
  29 
  30 // PcDescs map a physical PC (given as offset from start of nmethod) to
  31 // the corresponding source scope and byte code index.
  32 
  33 class CompiledMethod;
  34 
  35 class PcDesc {
  36   friend class VMStructs;
  37  private:
  38   int _pc_offset;           // offset from start of nmethod
  39   int _scope_decode_offset; // offset for scope in nmethod
  40   int _obj_decode_offset;
  41 
  42   enum {
  43     PCDESC_reexecute               = 1 << 0,
  44     PCDESC_is_method_handle_invoke = 1 << 1,
  45     PCDESC_return_oop              = 1 << 2,
  46     PCDESC_rethrow_exception       = 1 << 3
  47   };
  48 
  49   int _flags;
  50 
  51   void set_flag(int mask, bool z) {
  52     _flags = z ? (_flags | mask) : (_flags & ~mask);
  53   }
  54 
  55  public: