1 /*
   2  * Copyright 1997-2009 Sun Microsystems, Inc.  All Rights Reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.
   8  *
   9  * This code is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
  20  * CA 95054 USA or visit www.sun.com if you need additional information or
  21  * have any questions.
  22  *
  23  */
  24 
  25 #include "incls/_precompiled.incl"
  26 #include "incls/_methodHandles_sparc.cpp.incl"
  27 
  28 #define __ _masm->
  29 
  30 address MethodHandleEntry::start_compiled_entry(MacroAssembler* _masm,
  31                                                 address interpreted_entry) {
  32   __ align(wordSize);
  33   address target = __ pc() + sizeof(Data);
  34   while (__ pc() < target) {
  35     __ nop();
  36     __ align(wordSize);
  37   }
  38 
  39   MethodHandleEntry* me = (MethodHandleEntry*) __ pc();
  40   me->set_end_address(__ pc());         // set a temporary end_address
  41   me->set_from_interpreted_entry(interpreted_entry);
  42   me->set_type_checking_entry(NULL);
  43 
  44   return (address) me;
  45 }
  46 
  47 MethodHandleEntry* MethodHandleEntry::finish_compiled_entry(MacroAssembler* _masm,
  48                                                 address start_addr) {
  49   MethodHandleEntry* me = (MethodHandleEntry*) start_addr;
  50   assert(me->end_address() == start_addr, "valid ME");
  51 
  52   // Fill in the real end_address:
  53   __ align(wordSize);
  54   me->set_end_address(__ pc());
  55 
  56   return me;
  57 }
  58 
  59 
  60 // Code generation
  61 address MethodHandles::generate_method_handle_interpreter_entry(MacroAssembler* _masm) {
  62   ShouldNotReachHere(); //NYI, 6815692
  63   return NULL;
  64 }
  65 
  66 // Generate an "entry" field for a method handle.
  67 // This determines how the method handle will respond to calls.
  68 void MethodHandles::generate_method_handle_stub(MacroAssembler* _masm, MethodHandles::EntryKind ek) {
  69   ShouldNotReachHere(); //NYI, 6815692
  70 }