1/*
2 * Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved.
3 * Copyright 2007, 2008 Red Hat, Inc.
4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
5 *
6 * This code is free software; you can redistribute it and/or modify it
7 * under the terms of the GNU General Public License version 2 only, as
8 * published by the Free Software Foundation.
9 *
10 * This code is distributed in the hope that it will be useful, but WITHOUT
11 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
12 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
13 * version 2 for more details (a copy is included in the LICENSE file that
14 * accompanied this code).
15 *
16 * You should have received a copy of the GNU General Public License version
17 * 2 along with this work; if not, write to the Free Software Foundation,
18 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
19 *
20 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
21 * or visit www.oracle.com if you need additional information or have any
22 * questions.
23 *
24 */
25
26#ifndef CPU_ZERO_VM_INTERPRETERRT_ZERO_HPP
27#define CPU_ZERO_VM_INTERPRETERRT_ZERO_HPP
28
29#include "memory/allocation.hpp"
30
31class SignatureHandler {
32 public:
33  static SignatureHandler *from_handlerAddr(address handlerAddr) {
34    return (SignatureHandler *) handlerAddr;
35  }
36
37 public:
38  ffi_cif* cif() const {
39    return (ffi_cif *) this;
40  }
41
42  int argument_count() const {
43    return cif()->nargs;
44  }
45
46  ffi_type** argument_types() const {
47    return (ffi_type**) (cif() + 1);
48  }
49
50  ffi_type* argument_type(int i) const {
51    return argument_types()[i];
52  }
53
54  ffi_type* result_type() const {
55    return *(argument_types() + argument_count());
56  }
57
58 protected:
59  friend class InterpreterRuntime;
60  friend class SignatureHandlerLibrary;
61
62  void finalize();
63};
64
65class SignatureHandlerGeneratorBase : public NativeSignatureIterator {
66 private:
67  ffi_cif* _cif;
68
69 protected:
70  SignatureHandlerGeneratorBase(methodHandle method, ffi_cif *cif)
71    : NativeSignatureIterator(method), _cif(cif) {
72    _cif->nargs = 0;
73  }
74
75  ffi_cif *cif() const {
76    return _cif;
77  }
78
79 public:
80  void generate(uint64_t fingerprint);
81
82 private:
83  void pass_int();
84  void pass_long();
85  void pass_float();
86  void pass_double();
87  void pass_object();
88
89 private:
90  void push(BasicType type);
91  virtual void push(intptr_t value) = 0;
92};
93
94class SignatureHandlerGenerator : public SignatureHandlerGeneratorBase {
95 private:
96  CodeBuffer* _cb;
97
98 public:
99  SignatureHandlerGenerator(methodHandle method, CodeBuffer* buffer)
100    : SignatureHandlerGeneratorBase(method, (ffi_cif *) buffer->insts_end()),
101      _cb(buffer) {
102    _cb->set_insts_end((address) (cif() + 1));
103  }
104
105 private:
106  void push(intptr_t value) {
107    intptr_t *dst = (intptr_t *) _cb->insts_end();
108    _cb->set_insts_end((address) (dst + 1));
109    *dst = value;
110  }
111};
112
113class SlowSignatureHandlerGenerator : public SignatureHandlerGeneratorBase {
114 private:
115  intptr_t *_dst;
116
117 public:
118  SlowSignatureHandlerGenerator(methodHandle method, intptr_t* buf)
119    : SignatureHandlerGeneratorBase(method, (ffi_cif *) buf) {
120    _dst = (intptr_t *) (cif() + 1);
121  }
122
123 private:
124  void push(intptr_t value) {
125    *(_dst++) = value;
126  }
127
128 public:
129  SignatureHandler *handler() const {
130    return (SignatureHandler *) cif();
131  }
132};
133
134#endif // CPU_ZERO_VM_INTERPRETERRT_ZERO_HPP
135