1 /*

     2  * Copyright 1998-2005 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 // native method calls

    26 

    27 class SignatureHandlerGenerator: public NativeSignatureIterator {

    28  private:

    29   MacroAssembler* _masm;

    30 #ifdef AMD64

    31 #ifdef _WIN64

    32   unsigned int _num_args;

    33 #else

    34   unsigned int _num_fp_args;

    35   unsigned int _num_int_args;

    36 #endif // _WIN64

    37   int _stack_offset;

    38 #else

    39   void move(int from_offset, int to_offset);

    40   void box(int from_offset, int to_offset);

    41 #endif // AMD64

    42 

    43   void pass_int();

    44   void pass_long();

    45   void pass_float();

    46 #ifdef AMD64

    47   void pass_double();

    48 #endif // AMD64

    49   void pass_object();

    50 

    51  public:

    52   // Creation

    53   SignatureHandlerGenerator(methodHandle method, CodeBuffer* buffer) : NativeSignatureIterator(method) {

    54     _masm = new MacroAssembler(buffer);

    55 #ifdef AMD64

    56 #ifdef _WIN64

    57     _num_args = (method->is_static() ? 1 : 0);

    58     _stack_offset = (Argument::n_int_register_parameters_c+1)* wordSize; // don't overwrite return address

    59 #else

    60     _num_int_args = (method->is_static() ? 1 : 0);

    61     _num_fp_args = 0;

    62     _stack_offset = wordSize; // don't overwrite return address

    63 #endif // _WIN64

    64 #endif // AMD64

    65   }

    66 

    67   // Code generation

    68   void generate(uint64_t fingerprint);

    69 

    70   // Code generation support

    71   static Register from();

    72   static Register to();

    73   static Register temp();

    74 };