jvmciCompilerToVM.hpp revision 9287:40bd4478a362 
1/*
2 * Copyright (c) 2011, 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#ifndef SHARE_VM_JVMCI_JVMCI_COMPILER_TO_VM_HPP
25#define SHARE_VM_JVMCI_JVMCI_COMPILER_TO_VM_HPP
26
27#include "prims/jni.h"
28#include "runtime/javaCalls.hpp"
29#include "jvmci/jvmciJavaClasses.hpp"
30
31class CompilerToVM {
32public:
33  /**
34   * Tag bits used by lookupKlassInPool to distinguish the types in Java.
35   */
36  enum Tags {
37    KLASS_TAG = 0x0,
38    SYMBOL_TAG = 0x1
39  };
40
41  // FIXME This is only temporary until the GC code is changed.
42  static bool _supports_inline_contig_alloc;
43  static HeapWord** _heap_end_addr;
44  static HeapWord** _heap_top_addr;
45
46  static intptr_t tag_pointer(Klass* klass) {
47    return ((intptr_t) klass) | KLASS_TAG;
48  }
49
50  static intptr_t tag_pointer(Symbol* symbol) {
51    return ((intptr_t) symbol) | SYMBOL_TAG;
52  }
53
54  static JNINativeMethod methods[];
55  static int methods_count();
56
57  static inline Method* asMethod(jobject jvmci_method) {
58    return (Method*) (address) HotSpotResolvedJavaMethodImpl::metaspaceMethod(jvmci_method);
59  }
60
61  static inline Method* asMethod(Handle jvmci_method) {
62    return (Method*) (address) HotSpotResolvedJavaMethodImpl::metaspaceMethod(jvmci_method);
63  }
64
65  static inline Method* asMethod(oop jvmci_method) {
66    return (Method*) (address) HotSpotResolvedJavaMethodImpl::metaspaceMethod(jvmci_method);
67  }
68
69  static inline ConstantPool* asConstantPool(jobject jvmci_constant_pool) {
70    return (ConstantPool*) (address) HotSpotConstantPool::metaspaceConstantPool(jvmci_constant_pool);
71  }
72
73  static inline ConstantPool* asConstantPool(Handle jvmci_constant_pool) {
74    return (ConstantPool*) (address) HotSpotConstantPool::metaspaceConstantPool(jvmci_constant_pool);
75  }
76
77  static inline ConstantPool* asConstantPool(oop jvmci_constant_pool) {
78    return (ConstantPool*) (address) HotSpotConstantPool::metaspaceConstantPool(jvmci_constant_pool);
79  }
80
81  static inline Klass* asKlass(jobject jvmci_type) {
82    return java_lang_Class::as_Klass(HotSpotResolvedObjectTypeImpl::javaClass(jvmci_type));
83  }
84
85  static inline Klass* asKlass(Handle jvmci_type) {
86    return java_lang_Class::as_Klass(HotSpotResolvedObjectTypeImpl::javaClass(jvmci_type));
87  }
88
89  static inline Klass* asKlass(oop jvmci_type) {
90    return java_lang_Class::as_Klass(HotSpotResolvedObjectTypeImpl::javaClass(jvmci_type));
91  }
92
93  static inline MethodData* asMethodData(jlong metaspaceMethodData) {
94    return (MethodData*) (address) metaspaceMethodData;
95  }
96
97  static oop get_jvmci_method(methodHandle method, TRAPS);
98
99  static oop get_jvmci_type(KlassHandle klass, TRAPS);
100
101  static void invalidate_installed_code(Handle installedCode, TRAPS);
102};
103
104class JavaArgumentUnboxer : public SignatureIterator {
105 protected:
106  JavaCallArguments*  _jca;
107  arrayOop _args;
108  int _index;
109
110  oop next_arg(BasicType expectedType) {
111    assert(_index < _args->length(), "out of bounds");
112    oop arg=((objArrayOop) (_args))->obj_at(_index++);
113    assert(expectedType == T_OBJECT || java_lang_boxing_object::is_instance(arg, expectedType), "arg type mismatch");
114    return arg;
115  }
116
117 public:
118  JavaArgumentUnboxer(Symbol* signature, JavaCallArguments*  jca, arrayOop args, bool is_static) : SignatureIterator(signature) {
119    this->_return_type = T_ILLEGAL;
120    _jca = jca;
121    _index = 0;
122    _args = args;
123    if (!is_static) {
124      _jca->push_oop(next_arg(T_OBJECT));
125    }
126    iterate();
127    assert(_index == args->length(), "arg count mismatch with signature");
128  }
129
130  inline void do_bool()   { if (!is_return_type()) _jca->push_int(next_arg(T_BOOLEAN)->bool_field(java_lang_boxing_object::value_offset_in_bytes(T_BOOLEAN))); }
131  inline void do_char()   { if (!is_return_type()) _jca->push_int(next_arg(T_CHAR)->char_field(java_lang_boxing_object::value_offset_in_bytes(T_CHAR))); }
132  inline void do_short()  { if (!is_return_type()) _jca->push_int(next_arg(T_SHORT)->short_field(java_lang_boxing_object::value_offset_in_bytes(T_SHORT))); }
133  inline void do_byte()   { if (!is_return_type()) _jca->push_int(next_arg(T_BYTE)->byte_field(java_lang_boxing_object::value_offset_in_bytes(T_BYTE))); }
134  inline void do_int()    { if (!is_return_type()) _jca->push_int(next_arg(T_INT)->int_field(java_lang_boxing_object::value_offset_in_bytes(T_INT))); }
135
136  inline void do_long()   { if (!is_return_type()) _jca->push_long(next_arg(T_LONG)->long_field(java_lang_boxing_object::value_offset_in_bytes(T_LONG))); }
137  inline void do_float()  { if (!is_return_type()) _jca->push_float(next_arg(T_FLOAT)->float_field(java_lang_boxing_object::value_offset_in_bytes(T_FLOAT))); }
138  inline void do_double() { if (!is_return_type()) _jca->push_double(next_arg(T_DOUBLE)->double_field(java_lang_boxing_object::value_offset_in_bytes(T_DOUBLE))); }
139
140  inline void do_object() { _jca->push_oop(next_arg(T_OBJECT)); }
141  inline void do_object(int begin, int end) { if (!is_return_type()) _jca->push_oop(next_arg(T_OBJECT)); }
142  inline void do_array(int begin, int end)  { if (!is_return_type()) _jca->push_oop(next_arg(T_OBJECT)); }
143  inline void do_void()                     { }
144};
145
146#endif // SHARE_VM_JVMCI_JVMCI_COMPILER_TO_VM_HPP
147