1 /*
 2  * Copyright (c) 1998, 2021, Oracle and/or its affiliates. All rights reserved.
 3  * Copyright (c) 2014, Red Hat Inc. All rights reserved.
 4  * Copyright (c) 2021, Azul Systems, Inc. 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_INTERPRETERRT_AARCH64_HPP
28 #define CPU_AARCH64_INTERPRETERRT_AARCH64_HPP
29 
30 // This is included in the middle of class Interpreter.
31 // Do not include files here.
32 
33 // native method calls
34 
35 class SignatureHandlerGenerator: public NativeSignatureIterator {
36  private:
37   MacroAssembler* _masm;
38   unsigned int _num_reg_fp_args;
39   unsigned int _num_reg_int_args;
40   int _stack_offset;
41 
42   void pass_byte();
43   void pass_short();
44   void pass_int();
45   void pass_long();
46   void pass_float();
47   void pass_double();
48   void pass_object();
49   void pass_valuetype();
50 
51   Register next_gpr();
52   FloatRegister next_fpr();
53   int next_stack_offset(unsigned elem_size);
54 
55  public:
56   // Creation
57   SignatureHandlerGenerator(const methodHandle& method, CodeBuffer* buffer);
58 
59   // Code generation
60   void generate(uint64_t fingerprint);
61 
62   // Code generation support
63   static Register from();
64   static Register to();
65   static Register temp();
66 };
67 
68 #endif // CPU_AARCH64_INTERPRETERRT_AARCH64_HPP