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
31 class CompilerToVM {
32 public:
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
104 class 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