1 /*
2 * Copyright (c) 2011, 2015, 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_CODE_INSTALLER_HPP
25 #define SHARE_VM_JVMCI_JVMCI_CODE_INSTALLER_HPP
26
27 #include "jvmci/jvmciCompiler.hpp"
28 #include "jvmci/jvmciEnv.hpp"
29 #include "code/nativeInst.hpp"
30
31 class RelocBuffer : public StackObj {
32 enum { stack_size = 1024 };
33 public:
34 RelocBuffer() : _size(0), _buffer(0) {}
35 ~RelocBuffer();
36 void ensure_size(size_t bytes);
37 void set_size(size_t bytes);
38 address begin() const;
39 size_t size() const { return _size; }
40 private:
41 size_t _size;
42 char _static_buffer[stack_size];
43 char *_buffer;
44 };
45
46 class CodeMetadata {
47 public:
48 CodeMetadata() {}
49
50 CodeBlob* get_code_blob() const { return _cb; }
51
52 PcDesc* get_pc_desc() const { return _pc_desc; }
53 int get_nr_pc_desc() const { return _nr_pc_desc; }
54
55 u_char* get_scopes_desc() const { return _scopes_desc; }
56 int get_scopes_size() const { return _nr_scopes_desc; }
57
58 RelocBuffer* get_reloc_buffer() { return &_reloc_buffer; }
59
60 ExceptionHandlerTable* get_exception_table() { return _exception_table; }
61
62 void set_pc_desc(PcDesc* desc, int count) {
63 _pc_desc = desc;
64 _nr_pc_desc = count;
65 }
66
67 void set_scopes(u_char* scopes, int size) {
68 _scopes_desc = scopes;
69 _nr_scopes_desc = size;
70 }
71
72 void set_exception_table(ExceptionHandlerTable* table) {
73 _exception_table = table;
74 }
75
76 private:
77 CodeBlob* _cb;
78 PcDesc* _pc_desc;
79 int _nr_pc_desc;
80
81 u_char* _scopes_desc;
82 int _nr_scopes_desc;
83
84 RelocBuffer _reloc_buffer;
85 ExceptionHandlerTable* _exception_table;
86 };
87
88 /*
89 * This class handles the conversion from a InstalledCode to a CodeBlob or an nmethod.
90 */
91 class CodeInstaller : public StackObj {
92 friend class VMStructs;
93 private:
94 enum MarkId {
95 VERIFIED_ENTRY = 1,
96 UNVERIFIED_ENTRY = 2,
97 OSR_ENTRY = 3,
98 EXCEPTION_HANDLER_ENTRY = 4,
99 DEOPT_HANDLER_ENTRY = 5,
100 INVOKEINTERFACE = 6,
101 INVOKEVIRTUAL = 7,
102 INVOKESTATIC = 8,
103 INVOKESPECIAL = 9,
104 INLINE_INVOKE = 10,
105 POLL_NEAR = 11,
106 POLL_RETURN_NEAR = 12,
107 POLL_FAR = 13,
108 POLL_RETURN_FAR = 14,
109 CARD_TABLE_ADDRESS = 15,
110 HEAP_TOP_ADDRESS = 16,
111 HEAP_END_ADDRESS = 17,
112 NARROW_KLASS_BASE_ADDRESS = 18,
113 CRC_TABLE_ADDRESS = 19,
114 INVOKE_INVALID = -1
115 };
116
117 Arena _arena;
118
119 jobject _data_section_handle;
120 jobject _data_section_patches_handle;
121 jobject _sites_handle;
122 jobject _exception_handlers_handle;
123 CodeOffsets _offsets;
124
125 jobject _code_handle;
126 jint _code_size;
127 jint _total_frame_size;
128 jint _custom_stack_area_offset;
129 jint _parameter_count;
130 jint _constants_size;
131 #ifndef PRODUCT
132 jobject _comments_handle;
133 #endif
134
135 bool _has_wide_vector;
136 jobject _word_kind_handle;
137
138 MarkId _next_call_type;
139 address _invoke_mark_pc;
140
141 CodeSection* _instructions;
142 CodeSection* _constants;
143
144 OopRecorder* _oop_recorder;
145 DebugInformationRecorder* _debug_recorder;
146 Dependencies* _dependencies;
147 ExceptionHandlerTable _exception_handler_table;
148
149 static ConstantOopWriteValue* _oop_null_scope_value;
150 static ConstantIntValue* _int_m1_scope_value;
151 static ConstantIntValue* _int_0_scope_value;
152 static ConstantIntValue* _int_1_scope_value;
153 static ConstantIntValue* _int_2_scope_value;
154 static LocationValue* _illegal_value;
155
156 jint pd_next_offset(NativeInstruction* inst, jint pc_offset, oop method);
157 void pd_patch_OopConstant(int pc_offset, Handle& constant);
158 void pd_patch_DataSectionReference(int pc_offset, int data_offset);
159 void pd_relocate_CodeBlob(CodeBlob* cb, NativeInstruction* inst);
160 void pd_relocate_ForeignCall(NativeInstruction* inst, jlong foreign_call_destination);
161 void pd_relocate_JavaMethod(oop method, jint pc_offset);
162 void pd_relocate_poll(address pc, jint mark);
163
164 objArrayOop sites() { return (objArrayOop) JNIHandles::resolve(_sites_handle); }
165 arrayOop code() { return (arrayOop) JNIHandles::resolve(_code_handle); }
166 arrayOop data_section() { return (arrayOop) JNIHandles::resolve(_data_section_handle); }
167 objArrayOop data_section_patches() { return (objArrayOop) JNIHandles::resolve(_data_section_patches_handle); }
168 objArrayOop exception_handlers() { return (objArrayOop) JNIHandles::resolve(_exception_handlers_handle); }
169 #ifndef PRODUCT
170 objArrayOop comments() { return (objArrayOop) JNIHandles::resolve(_comments_handle); }
171 #endif
172
173 void record_resolved(oop obj);
174
175 oop word_kind() { return (oop) JNIHandles::resolve(_word_kind_handle); }
176
177 public:
178 CodeInstaller() : _arena(mtCompiler) {}
179
180 JVMCIEnv::CodeInstallResult gather_metadata(Handle target, Handle& compiled_code, CodeMetadata& metadata);
181 JVMCIEnv::CodeInstallResult install(JVMCICompiler* compiler, Handle target, Handle& compiled_code, CodeBlob*& cb, Handle installed_code, Handle speculation_log);
182
183 static address runtime_call_target_address(oop runtime_call);
184 static VMReg get_hotspot_reg(jint jvmciRegisterNumber);
185 static bool is_general_purpose_reg(VMReg hotspotRegister);
186
187 const OopMapSet* oopMapSet() const { return _debug_recorder->_oopmaps; }
188
189 protected:
190 Location::Type get_oop_type(oop value);
191 ScopeValue* get_scope_value(oop value, BasicType type, GrowableArray<ScopeValue*>* objects, ScopeValue* &second);
192 MonitorValue* get_monitor_value(oop value, GrowableArray<ScopeValue*>* objects);
193
194 // extract the fields of the CompilationResult
195 void initialize_fields(oop target, oop target_method);
196 void initialize_dependencies(oop target_method, OopRecorder* oop_recorder);
197
198 int estimate_stubs_size();
199
200 // perform data and call relocation on the CodeBuffer
201 JVMCIEnv::CodeInstallResult initialize_buffer(CodeBuffer& buffer);
202
203 void assumption_NoFinalizableSubclass(Handle assumption);
204 void assumption_ConcreteSubtype(Handle assumption);
205 void assumption_LeafType(Handle assumption);
206 void assumption_ConcreteMethod(Handle assumption);
207 void assumption_CallSiteTargetValue(Handle assumption);
208
209 void site_Safepoint(CodeBuffer& buffer, jint pc_offset, oop site);
210 void site_Infopoint(CodeBuffer& buffer, jint pc_offset, oop site);
211 void site_Call(CodeBuffer& buffer, jint pc_offset, oop site);
212 void site_DataPatch(CodeBuffer& buffer, jint pc_offset, oop site);
213 void site_Mark(CodeBuffer& buffer, jint pc_offset, oop site);
214
215 OopMap* create_oop_map(oop debug_info);
216
217 void record_scope(jint pc_offset, oop debug_info);
218 void record_scope(jint pc_offset, oop code_pos, GrowableArray<ScopeValue*>* objects);
219 void record_object_value(ObjectValue* sv, oop value, GrowableArray<ScopeValue*>* objects);
220
221 GrowableArray<ScopeValue*>* record_virtual_objects(oop debug_info);
222
223 void process_exception_handlers();
224 int estimateStubSpace(int static_call_stubs);
225 };
226
227 /**
228 * Gets the Method metaspace object from a HotSpotResolvedJavaMethodImpl Java object.
229 */
230 Method* getMethodFromHotSpotMethod(oop hotspot_method);
231
232
233
234 #endif // SHARE_VM_JVMCI_JVMCI_CODE_INSTALLER_HPP