1 /*
   2  * Copyright (c) 1998, 2019, Oracle and/or its affiliates. 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 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 CPU_X86_INTERPRETERRT_X86_HPP
  26 #define CPU_X86_INTERPRETERRT_X86_HPP
  27 
  28 // This is included in the middle of class Interpreter.
  29 // Do not include files here.
  30 
  31 // native method calls
  32 
  33 class SignatureHandlerGenerator: public NativeSignatureIterator {
  34  private:
  35   MacroAssembler* _masm;
  36 #ifdef AMD64
  37 #ifdef _WIN64
  38   unsigned int _num_args;
  39 #else
  40   unsigned int _num_fp_args;
  41   unsigned int _num_int_args;
  42 #endif // _WIN64
  43   int _stack_offset;
  44 #else
  45   void move(int from_offset, int to_offset);
  46   void box(int from_offset, int to_offset);
  47 #endif // AMD64
  48 
  49   void pass_int();
  50   void pass_long();
  51   void pass_float();
  52 #ifdef AMD64
  53   void pass_double();
  54 #endif // AMD64
  55   void pass_object();
  56 
  57  public:
  58   // Creation
  59   SignatureHandlerGenerator(const methodHandle& method, CodeBuffer* buffer);
  60 
  61   // Code generation
  62   void generate(uint64_t fingerprint);
  63 
  64   // Code generation support
  65   static Register from();
  66   static Register to();
  67   static Register temp();
  68 };
  69 
  70 #endif // CPU_X86_INTERPRETERRT_X86_HPP