1 /*
2 * Copyright (c) 2011, 2019, 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_JVMCI_JVMCICOMPILERTOVM_HPP
25 #define SHARE_JVMCI_JVMCICOMPILERTOVM_HPP
26
27 #include "jni.h"
28 #include "runtime/javaCalls.hpp"
29 #include "jvmci/jvmciJavaClasses.hpp"
30
31 // Helper class to ensure that references to Klass* are kept alive for G1
32 class JVMCIKlassHandle : public StackObj {
33 private:
34 Klass* _klass;
35 Handle _holder;
36 Thread* _thread;
37
38 Klass* klass() const { return _klass; }
39 Klass* non_null_klass() const { assert(_klass != NULL, "resolving NULL _klass"); return _klass; }
40
41 public:
42 /* Constructors */
43 JVMCIKlassHandle (Thread* thread) : _klass(NULL), _thread(thread) {}
44 JVMCIKlassHandle (Thread* thread, Klass* klass);
45
46 JVMCIKlassHandle (const JVMCIKlassHandle &h): _klass(h._klass), _holder(h._holder), _thread(h._thread) {}
47 JVMCIKlassHandle& operator=(const JVMCIKlassHandle &s);
48 JVMCIKlassHandle& operator=(Klass* klass);
49
50 /* Operators for ease of use */
51 Klass* operator () () const { return klass(); }
52 Klass* operator -> () const { return non_null_klass(); }
53
54 bool operator == (Klass* o) const { return klass() == o; }
55 bool operator == (const JVMCIKlassHandle& h) const { return klass() == h.klass(); }
56
57 /* Null checks */
58 bool is_null() const { return _klass == NULL; }
59 bool not_null() const { return _klass != NULL; }
60 };
61
62 class CompilerToVM {
63 public:
64 class Data {
65 friend class JVMCIVMStructs;
66
67 private:
68 static int Klass_vtable_start_offset;
69 static int Klass_vtable_length_offset;
70
71 static int Method_extra_stack_entries;
72
73 static address SharedRuntime_ic_miss_stub;
74 static address SharedRuntime_handle_wrong_method_stub;
75 static address SharedRuntime_deopt_blob_unpack;
76 static address SharedRuntime_deopt_blob_uncommon_trap;
77
78 static size_t ThreadLocalAllocBuffer_alignment_reserve;
79
80 static CollectedHeap* Universe_collectedHeap;
81 static int Universe_base_vtable_size;
82 static address Universe_narrow_oop_base;
83 static int Universe_narrow_oop_shift;
84 static address Universe_narrow_klass_base;
85 static int Universe_narrow_klass_shift;
86 static uintptr_t Universe_verify_oop_mask;
87 static uintptr_t Universe_verify_oop_bits;
88 static void* Universe_non_oop_bits;
89
90 static bool _supports_inline_contig_alloc;
91 static HeapWord** _heap_end_addr;
92 static HeapWord* volatile* _heap_top_addr;
93 static int _max_oop_map_stack_offset;
94 static int _fields_annotations_base_offset;
95
96 static CardTable::CardValue* cardtable_start_address;
97 static int cardtable_shift;
98
99 static int vm_page_size;
100
101 static int sizeof_vtableEntry;
102 static int sizeof_ExceptionTableElement;
103 static int sizeof_LocalVariableTableElement;
104 static int sizeof_ConstantPool;
105 static int sizeof_narrowKlass;
106 static int sizeof_arrayOopDesc;
107 static int sizeof_BasicLock;
108
109 static address dsin;
110 static address dcos;
111 static address dtan;
112 static address dexp;
113 static address dlog;
114 static address dlog10;
115 static address dpow;
116
117 static address symbol_init;
118 static address symbol_clinit;
119
120 public:
121 static void initialize(TRAPS);
122
123 static int max_oop_map_stack_offset() {
124 assert(_max_oop_map_stack_offset > 0, "must be initialized");
125 return Data::_max_oop_map_stack_offset;
126 }
127 };
128
129 static bool cstring_equals(const char* const& s0, const char* const& s1) {
130 return strcmp(s0, s1) == 0;
131 }
132
133 static unsigned cstring_hash(const char* const& s) {
134 int h = 0;
135 const char* p = s;
136 while (*p != '\0') {
137 h = 31 * h + *p;
138 p++;
139 }
140 return h;
141 }
142
143 static JNINativeMethod methods[];
144
145 static objArrayHandle initialize_intrinsics(TRAPS);
146 public:
147 static int methods_count();
148
149 static inline Method* asMethod(jobject jvmci_method) {
150 return (Method*) (address) HotSpotResolvedJavaMethodImpl::metaspaceMethod(jvmci_method);
151 }
152
153 static inline Method* asMethod(Handle jvmci_method) {
154 return (Method*) (address) HotSpotResolvedJavaMethodImpl::metaspaceMethod(jvmci_method);
155 }
156
157 static inline Method* asMethod(oop jvmci_method) {
158 return (Method*) (address) HotSpotResolvedJavaMethodImpl::metaspaceMethod(jvmci_method);
159 }
160
161 static inline ConstantPool* asConstantPool(jobject jvmci_constant_pool) {
162 return (ConstantPool*) (address) HotSpotConstantPool::metaspaceConstantPool(jvmci_constant_pool);
163 }
164
165 static inline ConstantPool* asConstantPool(Handle jvmci_constant_pool) {
166 return (ConstantPool*) (address) HotSpotConstantPool::metaspaceConstantPool(jvmci_constant_pool);
167 }
168
169 static inline ConstantPool* asConstantPool(oop jvmci_constant_pool) {
170 return (ConstantPool*) (address) HotSpotConstantPool::metaspaceConstantPool(jvmci_constant_pool);
171 }
172
173 static inline Klass* asKlass(jobject jvmci_type) {
174 return java_lang_Class::as_Klass(HotSpotResolvedObjectTypeImpl::javaClass(jvmci_type));
175 }
176
177 static inline Klass* asKlass(Handle jvmci_type) {
178 return java_lang_Class::as_Klass(HotSpotResolvedObjectTypeImpl::javaClass(jvmci_type));
179 }
180
181 static inline Klass* asKlass(oop jvmci_type) {
182 return java_lang_Class::as_Klass(HotSpotResolvedObjectTypeImpl::javaClass(jvmci_type));
183 }
184
185 static inline Klass* asKlass(jlong metaspaceKlass) {
186 return (Klass*) (address) metaspaceKlass;
187 }
188
189 static inline MethodData* asMethodData(jlong metaspaceMethodData) {
190 return (MethodData*) (address) metaspaceMethodData;
191 }
192
193 static oop get_jvmci_method(const methodHandle& method, TRAPS);
194
195 static oop get_jvmci_type(JVMCIKlassHandle& klass, TRAPS);
196 };
197
198 class JavaArgumentUnboxer : public SignatureIterator {
199 protected:
200 JavaCallArguments* _jca;
201 arrayOop _args;
202 int _index;
203
204 Handle next_arg(BasicType expectedType);
205
206 public:
207 JavaArgumentUnboxer(Symbol* signature, JavaCallArguments* jca, arrayOop args, bool is_static) : SignatureIterator(signature) {
208 this->_return_type = T_ILLEGAL;
209 _jca = jca;
210 _index = 0;
211 _args = args;
212 if (!is_static) {
213 _jca->push_oop(next_arg(T_OBJECT));
214 }
215 iterate();
216 assert(_index == args->length(), "arg count mismatch with signature");
217 }
218
219 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))); }
220 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))); }
221 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))); }
222 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))); }
223 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))); }
224
225 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))); }
226 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))); }
227 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))); }
228
229 inline void do_object() { _jca->push_oop(next_arg(T_OBJECT)); }
230 inline void do_object(int begin, int end) { if (!is_return_type()) _jca->push_oop(next_arg(T_OBJECT)); }
231 inline void do_array(int begin, int end) { if (!is_return_type()) _jca->push_oop(next_arg(T_OBJECT)); }
232 inline void do_void() { }
233 };
234
235 class JNIHandleMark : public StackObj {
236 public:
237 JNIHandleMark() { push_jni_handle_block(); }
238 ~JNIHandleMark() { pop_jni_handle_block(); }
239
240 private:
241 static void push_jni_handle_block();
242 static void pop_jni_handle_block();
243 };
244
245 #endif // SHARE_JVMCI_JVMCICOMPILERTOVM_HPP