1 /*
   2  * Copyright (c) 2008, 2013, 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_ARM_VM_INTERPRETERRT_ARM_HPP
  26 #define CPU_ARM_VM_INTERPRETERRT_ARM_HPP
  27 
  28 #include "memory/allocation.hpp"
  29 
  30 // native method calls
  31 
  32 class SignatureHandlerGenerator: public NativeSignatureIterator {
  33  private:
  34   MacroAssembler* _masm;
  35   int _abi_offset;
  36   int  _ireg;
  37 
  38 #ifdef __ABI_HARD__
  39 #ifdef AARCH64
  40   int _freg;
  41 #else
  42   int _fp_slot; // number of FPR's with arguments loaded
  43   int _single_fpr_slot;
  44 #endif
  45 #endif
  46 
  47   void move(int from_offset, int to_offset);
  48   void box(int from_offset, int to_offset);
  49 
  50   void pass_int();
  51   void pass_long();
  52   void pass_float();
  53   void pass_object();
  54 #ifdef __ABI_HARD__
  55   void pass_double();
  56 #endif
  57  public:
  58   // Creation
  59   SignatureHandlerGenerator(const methodHandle& method, CodeBuffer* buffer) : NativeSignatureIterator(method) {
  60     _masm = new MacroAssembler(buffer);
  61     _abi_offset = 0;
  62     _ireg = is_static() ? 2 : 1;
  63 #ifdef __ABI_HARD__
  64 #ifdef AARCH64
  65     _freg = 0;
  66 #else
  67     _fp_slot = 0;
  68     _single_fpr_slot = 0;
  69 #endif
  70 #endif
  71   }
  72 
  73   // Code generation
  74   void generate(uint64_t fingerprint);
  75 
  76 };
  77 
  78 #ifndef AARCH64
  79 // ARM provides a normalized fingerprint for native calls (to increase
  80 // sharing). See normalize_fast_native_fingerprint
  81 #define SHARING_FAST_NATIVE_FINGERPRINTS
  82 #endif
  83 
  84 #endif // CPU_ARM_VM_INTERPRETERRT_ARM_HPP