11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  *
  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_INTERPRETER_BYTECODE_HPP
  26 #define SHARE_VM_INTERPRETER_BYTECODE_HPP
  27 
  28 #include "interpreter/bytecodes.hpp"
  29 #include "memory/allocation.hpp"
  30 #include "oops/method.hpp"

  31 #include "utilities/bytes.hpp"
  32 
  33 class ciBytecodeStream;
  34 
  35 // The base class for different kinds of bytecode abstractions.
  36 // Provides the primitive operations to manipulate code relative
  37 // to the bcp.
  38 
  39 class Bytecode: public StackObj {
  40  protected:
  41   const address   _bcp;
  42   const Bytecodes::Code _code;
  43 
  44   // Address computation
  45   address addr_at            (int offset)        const     { return (address)_bcp + offset; }
  46   u_char byte_at(int offset) const               { return *addr_at(offset); }
  47   address aligned_addr_at    (int offset)        const     { return align_up(addr_at(offset), jintSize); }
  48 
  49   // Word access:
  50   int     get_Java_u2_at     (int offset)        const     { return Bytes::get_Java_u2(addr_at(offset)); }

  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  *
  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_INTERPRETER_BYTECODE_HPP
  26 #define SHARE_VM_INTERPRETER_BYTECODE_HPP
  27 
  28 #include "interpreter/bytecodes.hpp"
  29 #include "memory/allocation.hpp"
  30 #include "oops/method.hpp"
  31 #include "utilities/align.hpp"
  32 #include "utilities/bytes.hpp"
  33 
  34 class ciBytecodeStream;
  35 
  36 // The base class for different kinds of bytecode abstractions.
  37 // Provides the primitive operations to manipulate code relative
  38 // to the bcp.
  39 
  40 class Bytecode: public StackObj {
  41  protected:
  42   const address   _bcp;
  43   const Bytecodes::Code _code;
  44 
  45   // Address computation
  46   address addr_at            (int offset)        const     { return (address)_bcp + offset; }
  47   u_char byte_at(int offset) const               { return *addr_at(offset); }
  48   address aligned_addr_at    (int offset)        const     { return align_up(addr_at(offset), jintSize); }
  49 
  50   // Word access:
  51   int     get_Java_u2_at     (int offset)        const     { return Bytes::get_Java_u2(addr_at(offset)); }