1 /*
   2  * Copyright (c) 2013, Red Hat Inc.
   3  * Copyright (c) 1998, 2010, Oracle and/or its affiliates.
   4  * All rights reserved.
   5  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   6  *
   7  * This code is free software; you can redistribute it and/or modify it
   8  * under the terms of the GNU General Public License version 2 only, as
   9  * published by the Free Software Foundation.
  10  *
  11  * This code is distributed in the hope that it will be useful, but WITHOUT
  12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  14  * version 2 for more details (a copy is included in the LICENSE file that
  15  * accompanied this code).
  16  *
  17  * You should have received a copy of the GNU General Public License version
  18  * 2 along with this work; if not, write to the Free Software Foundation,
  19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  20  *
  21  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  22  * or visit www.oracle.com if you need additional information or have any
  23  * questions.
  24  *
  25  */
  26 
  27 #ifndef CPU_AARCH64_VM_INTERPRETERRT_AARCH64_HPP
  28 #define CPU_AARCH64_VM_INTERPRETERRT_AARCH64_HPP
  29 
  30 #include "memory/allocation.hpp"
  31 
  32 // native method calls
  33 
  34 class SignatureHandlerGenerator: public NativeSignatureIterator {
  35  private:
  36   MacroAssembler* _masm;
  37   unsigned int _num_fp_args;
  38   unsigned int _num_int_args;
  39   int _stack_offset;
  40 
  41   void pass_int();
  42   void pass_long();
  43   void pass_float();
  44   void pass_double();
  45   void pass_object();
  46 
  47  public:
  48   // Creation
  49   SignatureHandlerGenerator(methodHandle method, CodeBuffer* buffer) : NativeSignatureIterator(method) {
  50     _masm = new MacroAssembler(buffer);
  51     _num_int_args = (method->is_static() ? 1 : 0);
  52     _num_fp_args = 0;
  53     _stack_offset = 0;
  54   }
  55 
  56   // Code generation
  57   void generate(uint64_t fingerprint);
  58 
  59   // Code generation support
  60   static Register from();
  61   static Register to();
  62   static Register temp();
  63 };
  64 
  65 #endif // CPU_AARCH64_VM_INTERPRETERRT_AARCH64_HPP