Mercurial > hg > truffle
annotate src/share/vm/code/codeBlob.hpp @ 7090:05ce1defa4f9
Common out some parts of UnsafeLoad/Store in UnsafeAccess
author | Gilles Duboscq <duboscq@ssw.jku.at> |
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date | Thu, 29 Nov 2012 13:24:08 +0100 |
parents | e522a00b91aa |
children | 1baf7f1e3f23 |
rev | line source |
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0 | 1 /* |
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2 * Copyright (c) 1998, 2012, Oracle and/or its affiliates. All rights reserved. |
0 | 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 * | |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
0 | 22 * |
23 */ | |
24 | |
1972 | 25 #ifndef SHARE_VM_CODE_CODEBLOB_HPP |
26 #define SHARE_VM_CODE_CODEBLOB_HPP | |
27 | |
28 #include "asm/codeBuffer.hpp" | |
29 #include "compiler/oopMap.hpp" | |
30 #include "runtime/frame.hpp" | |
31 #include "runtime/handles.hpp" | |
32 | |
0 | 33 // CodeBlob - superclass for all entries in the CodeCache. |
34 // | |
35 // Suptypes are: | |
36 // nmethod : Compiled Java methods (include method that calls to native code) | |
37 // RuntimeStub : Call to VM runtime methods | |
38 // DeoptimizationBlob : Used for deoptimizatation | |
39 // ExceptionBlob : Used for stack unrolling | |
40 // SafepointBlob : Used to handle illegal instruction exceptions | |
41 // | |
42 // | |
43 // Layout: | |
44 // - header | |
45 // - relocation | |
1748 | 46 // - content space |
47 // - instruction space | |
0 | 48 // - data space |
49 class DeoptimizationBlob; | |
50 | |
51 class CodeBlob VALUE_OBJ_CLASS_SPEC { | |
52 | |
53 friend class VMStructs; | |
54 | |
55 private: | |
56 const char* _name; | |
57 int _size; // total size of CodeBlob in bytes | |
58 int _header_size; // size of header (depends on subclass) | |
59 int _relocation_size; // size of relocation | |
1748 | 60 int _content_offset; // offset to where content region begins (this includes consts, insts, stubs) |
61 int _code_offset; // offset to where instructions region begins (this includes insts, stubs) | |
0 | 62 int _frame_complete_offset; // instruction offsets in [0.._frame_complete_offset) have |
63 // not finished setting up their frame. Beware of pc's in | |
64 // that range. There is a similar range(s) on returns | |
65 // which we don't detect. | |
66 int _data_offset; // offset to where data region begins | |
67 int _frame_size; // size of stack frame | |
68 OopMapSet* _oop_maps; // OopMap for this CodeBlob | |
69 CodeComments _comments; | |
70 | |
71 public: | |
72 // Returns the space needed for CodeBlob | |
73 static unsigned int allocation_size(CodeBuffer* cb, int header_size); | |
74 | |
75 // Creation | |
76 // a) simple CodeBlob | |
77 // frame_complete is the offset from the beginning of the instructions | |
78 // to where the frame setup (from stackwalk viewpoint) is complete. | |
79 CodeBlob(const char* name, int header_size, int size, int frame_complete, int locs_size); | |
80 | |
81 // b) full CodeBlob | |
82 CodeBlob( | |
83 const char* name, | |
84 CodeBuffer* cb, | |
85 int header_size, | |
86 int size, | |
87 int frame_complete, | |
88 int frame_size, | |
89 OopMapSet* oop_maps | |
90 ); | |
91 | |
92 // Deletion | |
93 void flush(); | |
94 | |
95 // Typing | |
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96 virtual bool is_buffer_blob() const { return false; } |
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97 virtual bool is_nmethod() const { return false; } |
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98 virtual bool is_runtime_stub() const { return false; } |
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99 virtual bool is_deoptimization_stub() const { return false; } |
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100 virtual bool is_uncommon_trap_stub() const { return false; } |
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101 virtual bool is_exception_stub() const { return false; } |
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102 virtual bool is_safepoint_stub() const { return false; } |
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103 virtual bool is_adapter_blob() const { return false; } |
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104 virtual bool is_method_handles_adapter_blob() const { return false; } |
0 | 105 |
106 virtual bool is_compiled_by_c2() const { return false; } | |
107 virtual bool is_compiled_by_c1() const { return false; } | |
108 | |
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109 // Casting |
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110 nmethod* as_nmethod_or_null() { return is_nmethod() ? (nmethod*) this : NULL; } |
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111 |
0 | 112 // Boundaries |
113 address header_begin() const { return (address) this; } | |
114 address header_end() const { return ((address) this) + _header_size; }; | |
115 relocInfo* relocation_begin() const { return (relocInfo*) header_end(); }; | |
116 relocInfo* relocation_end() const { return (relocInfo*)(header_end() + _relocation_size); } | |
1748 | 117 address content_begin() const { return (address) header_begin() + _content_offset; } |
118 address content_end() const { return (address) header_begin() + _data_offset; } | |
119 address code_begin() const { return (address) header_begin() + _code_offset; } | |
120 address code_end() const { return (address) header_begin() + _data_offset; } | |
0 | 121 address data_begin() const { return (address) header_begin() + _data_offset; } |
122 address data_end() const { return (address) header_begin() + _size; } | |
123 | |
124 // Offsets | |
125 int relocation_offset() const { return _header_size; } | |
1748 | 126 int content_offset() const { return _content_offset; } |
127 int code_offset() const { return _code_offset; } | |
0 | 128 int data_offset() const { return _data_offset; } |
129 | |
130 // Sizes | |
131 int size() const { return _size; } | |
132 int header_size() const { return _header_size; } | |
133 int relocation_size() const { return (address) relocation_end() - (address) relocation_begin(); } | |
1748 | 134 int content_size() const { return content_end() - content_begin(); } |
135 int code_size() const { return code_end() - code_begin(); } | |
136 int data_size() const { return data_end() - data_begin(); } | |
0 | 137 |
138 // Containment | |
1748 | 139 bool blob_contains(address addr) const { return header_begin() <= addr && addr < data_end(); } |
0 | 140 bool relocation_contains(relocInfo* addr) const{ return relocation_begin() <= addr && addr < relocation_end(); } |
1748 | 141 bool content_contains(address addr) const { return content_begin() <= addr && addr < content_end(); } |
142 bool code_contains(address addr) const { return code_begin() <= addr && addr < code_end(); } | |
143 bool data_contains(address addr) const { return data_begin() <= addr && addr < data_end(); } | |
144 bool contains(address addr) const { return content_contains(addr); } | |
145 bool is_frame_complete_at(address addr) const { return code_contains(addr) && | |
146 addr >= code_begin() + _frame_complete_offset; } | |
0 | 147 |
148 // CodeCache support: really only used by the nmethods, but in order to get | |
149 // asserts and certain bookkeeping to work in the CodeCache they are defined | |
150 // virtual here. | |
151 virtual bool is_zombie() const { return false; } | |
152 virtual bool is_locked_by_vm() const { return false; } | |
153 | |
154 virtual bool is_unloaded() const { return false; } | |
155 virtual bool is_not_entrant() const { return false; } | |
156 | |
157 // GC support | |
158 virtual bool is_alive() const = 0; | |
159 | |
160 // OopMap for frame | |
161 OopMapSet* oop_maps() const { return _oop_maps; } | |
162 void set_oop_maps(OopMapSet* p); | |
163 OopMap* oop_map_for_return_address(address return_address); | |
164 virtual void preserve_callee_argument_oops(frame fr, const RegisterMap* reg_map, OopClosure* f) { ShouldNotReachHere(); } | |
165 | |
166 // Frame support | |
167 int frame_size() const { return _frame_size; } | |
168 void set_frame_size(int size) { _frame_size = size; } | |
169 | |
170 // Returns true, if the next frame is responsible for GC'ing oops passed as arguments | |
171 virtual bool caller_must_gc_arguments(JavaThread* thread) const { return false; } | |
172 | |
173 // Naming | |
174 const char* name() const { return _name; } | |
175 void set_name(const char* name) { _name = name; } | |
176 | |
177 // Debugging | |
178 virtual void verify(); | |
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179 void print() const { print_on(tty); } |
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180 virtual void print_on(outputStream* st) const; |
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181 virtual void print_value_on(outputStream* st) const; |
0 | 182 |
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183 // Deal with Disassembler, VTune, Forte, JvmtiExport, MemoryService. |
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184 static void trace_new_stub(CodeBlob* blob, const char* name1, const char* name2 = ""); |
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185 |
0 | 186 // Print the comment associated with offset on stream, if there is one |
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187 virtual void print_block_comment(outputStream* stream, address block_begin) const { |
1748 | 188 intptr_t offset = (intptr_t)(block_begin - code_begin()); |
0 | 189 _comments.print_block_comment(stream, offset); |
190 } | |
191 | |
192 // Transfer ownership of comments to this CodeBlob | |
193 void set_comments(CodeComments& comments) { | |
194 _comments.assign(comments); | |
195 } | |
196 }; | |
197 | |
198 | |
199 //---------------------------------------------------------------------------------------------------- | |
200 // BufferBlob: used to hold non-relocatable machine code such as the interpreter, stubroutines, etc. | |
201 | |
202 class BufferBlob: public CodeBlob { | |
203 friend class VMStructs; | |
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204 friend class AdapterBlob; |
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205 friend class MethodHandlesAdapterBlob; |
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206 |
0 | 207 private: |
208 // Creation support | |
209 BufferBlob(const char* name, int size); | |
210 BufferBlob(const char* name, int size, CodeBuffer* cb); | |
211 | |
212 void* operator new(size_t s, unsigned size); | |
213 | |
214 public: | |
215 // Creation | |
216 static BufferBlob* create(const char* name, int buffer_size); | |
217 static BufferBlob* create(const char* name, CodeBuffer* cb); | |
218 | |
219 static void free(BufferBlob* buf); | |
220 | |
221 // Typing | |
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222 virtual bool is_buffer_blob() const { return true; } |
0 | 223 |
224 // GC/Verification support | |
225 void preserve_callee_argument_oops(frame fr, const RegisterMap* reg_map, OopClosure* f) { /* nothing to do */ } | |
226 bool is_alive() const { return true; } | |
227 | |
228 void verify(); | |
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229 void print_on(outputStream* st) const; |
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230 void print_value_on(outputStream* st) const; |
0 | 231 }; |
232 | |
233 | |
234 //---------------------------------------------------------------------------------------------------- | |
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235 // AdapterBlob: used to hold C2I/I2C adapters |
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236 |
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237 class AdapterBlob: public BufferBlob { |
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238 private: |
1663 | 239 AdapterBlob(int size, CodeBuffer* cb); |
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240 |
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241 public: |
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242 // Creation |
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243 static AdapterBlob* create(CodeBuffer* cb); |
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244 |
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245 // Typing |
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246 virtual bool is_adapter_blob() const { return true; } |
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247 }; |
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248 |
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249 |
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250 //---------------------------------------------------------------------------------------------------- |
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251 // MethodHandlesAdapterBlob: used to hold MethodHandles adapters |
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252 |
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253 class MethodHandlesAdapterBlob: public BufferBlob { |
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254 private: |
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255 MethodHandlesAdapterBlob(int size) : BufferBlob("MethodHandles adapters", size) {} |
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256 MethodHandlesAdapterBlob(int size, CodeBuffer* cb) : BufferBlob("MethodHandles adapters", size, cb) {} |
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257 |
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258 public: |
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259 // Creation |
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260 static MethodHandlesAdapterBlob* create(int buffer_size); |
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261 |
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262 // Typing |
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263 virtual bool is_method_handles_adapter_blob() const { return true; } |
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264 }; |
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265 |
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266 |
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267 //---------------------------------------------------------------------------------------------------- |
0 | 268 // RuntimeStub: describes stubs used by compiled code to call a (static) C++ runtime routine |
269 | |
270 class RuntimeStub: public CodeBlob { | |
271 friend class VMStructs; | |
272 private: | |
273 bool _caller_must_gc_arguments; | |
274 | |
275 // Creation support | |
276 RuntimeStub( | |
277 const char* name, | |
278 CodeBuffer* cb, | |
279 int size, | |
280 int frame_complete, | |
281 int frame_size, | |
282 OopMapSet* oop_maps, | |
283 bool caller_must_gc_arguments | |
284 ); | |
285 | |
286 void* operator new(size_t s, unsigned size); | |
287 | |
288 public: | |
289 // Creation | |
290 static RuntimeStub* new_runtime_stub( | |
291 const char* stub_name, | |
292 CodeBuffer* cb, | |
293 int frame_complete, | |
294 int frame_size, | |
295 OopMapSet* oop_maps, | |
296 bool caller_must_gc_arguments | |
297 ); | |
298 | |
299 // Typing | |
300 bool is_runtime_stub() const { return true; } | |
301 | |
302 // GC support | |
303 bool caller_must_gc_arguments(JavaThread* thread) const { return _caller_must_gc_arguments; } | |
304 | |
1748 | 305 address entry_point() { return code_begin(); } |
0 | 306 |
307 // GC/Verification support | |
308 void preserve_callee_argument_oops(frame fr, const RegisterMap *reg_map, OopClosure* f) { /* nothing to do */ } | |
309 bool is_alive() const { return true; } | |
310 | |
311 void verify(); | |
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312 void print_on(outputStream* st) const; |
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313 void print_value_on(outputStream* st) const; |
0 | 314 }; |
315 | |
316 | |
317 //---------------------------------------------------------------------------------------------------- | |
318 // Super-class for all blobs that exist in only one instance. Implements default behaviour. | |
319 | |
320 class SingletonBlob: public CodeBlob { | |
321 friend class VMStructs; | |
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322 |
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323 protected: |
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324 void* operator new(size_t s, unsigned size); |
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325 |
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326 public: |
0 | 327 SingletonBlob( |
328 const char* name, | |
329 CodeBuffer* cb, | |
330 int header_size, | |
331 int size, | |
332 int frame_size, | |
333 OopMapSet* oop_maps | |
334 ) | |
335 : CodeBlob(name, cb, header_size, size, CodeOffsets::frame_never_safe, frame_size, oop_maps) | |
1748 | 336 {}; |
0 | 337 |
1748 | 338 address entry_point() { return code_begin(); } |
0 | 339 |
1748 | 340 bool is_alive() const { return true; } |
341 | |
342 void verify(); // does nothing | |
343 void print_on(outputStream* st) const; | |
344 void print_value_on(outputStream* st) const; | |
0 | 345 }; |
346 | |
347 | |
348 //---------------------------------------------------------------------------------------------------- | |
349 // DeoptimizationBlob | |
350 | |
351 class DeoptimizationBlob: public SingletonBlob { | |
352 friend class VMStructs; | |
353 private: | |
354 int _unpack_offset; | |
355 int _unpack_with_exception; | |
356 int _unpack_with_reexecution; | |
357 | |
358 int _unpack_with_exception_in_tls; | |
359 | |
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360 // (thomaswue) Offset when graal calls uncommon_trap. |
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361 int _uncommon_trap_offset; |
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362 int _implicit_exception_uncommon_trap_offset; |
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363 |
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364 |
0 | 365 // Creation support |
366 DeoptimizationBlob( | |
367 CodeBuffer* cb, | |
368 int size, | |
369 OopMapSet* oop_maps, | |
370 int unpack_offset, | |
371 int unpack_with_exception_offset, | |
372 int unpack_with_reexecution_offset, | |
373 int frame_size | |
374 ); | |
375 | |
376 public: | |
377 // Creation | |
378 static DeoptimizationBlob* create( | |
379 CodeBuffer* cb, | |
380 OopMapSet* oop_maps, | |
381 int unpack_offset, | |
382 int unpack_with_exception_offset, | |
383 int unpack_with_reexecution_offset, | |
384 int frame_size | |
385 ); | |
386 | |
387 // Typing | |
388 bool is_deoptimization_stub() const { return true; } | |
389 bool exception_address_is_unpack_entry(address pc) const { | |
390 address unpack_pc = unpack(); | |
391 return (pc == unpack_pc || (pc + frame::pc_return_offset) == unpack_pc); | |
392 } | |
393 | |
394 | |
395 | |
396 | |
397 // GC for args | |
398 void preserve_callee_argument_oops(frame fr, const RegisterMap *reg_map, OopClosure* f) { /* Nothing to do */ } | |
399 | |
400 // Printing | |
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401 void print_value_on(outputStream* st) const; |
0 | 402 |
1748 | 403 address unpack() const { return code_begin() + _unpack_offset; } |
404 address unpack_with_exception() const { return code_begin() + _unpack_with_exception; } | |
405 address unpack_with_reexecution() const { return code_begin() + _unpack_with_reexecution; } | |
0 | 406 |
407 // Alternate entry point for C1 where the exception and issuing pc | |
408 // are in JavaThread::_exception_oop and JavaThread::_exception_pc | |
409 // instead of being in registers. This is needed because C1 doesn't | |
410 // model exception paths in a way that keeps these registers free so | |
411 // there may be live values in those registers during deopt. | |
412 void set_unpack_with_exception_in_tls_offset(int offset) { | |
413 _unpack_with_exception_in_tls = offset; | |
1748 | 414 assert(code_contains(code_begin() + _unpack_with_exception_in_tls), "must be PC inside codeblob"); |
0 | 415 } |
1748 | 416 address unpack_with_exception_in_tls() const { return code_begin() + _unpack_with_exception_in_tls; } |
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417 |
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418 // (thomaswue) Offset when graal calls uncommon_trap. |
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419 void set_uncommon_trap_offset(int offset) { |
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420 _uncommon_trap_offset = offset; |
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421 assert(contains(code_begin() + _uncommon_trap_offset), "must be PC inside codeblob"); |
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422 } |
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423 address uncommon_trap() const { return code_begin() + _uncommon_trap_offset; } |
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424 void set_implicit_exception_uncommon_trap_offset(int offset) { |
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425 _implicit_exception_uncommon_trap_offset = offset; |
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426 assert(contains(code_begin() + _implicit_exception_uncommon_trap_offset), "must be PC inside codeblob"); |
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427 } |
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428 address implicit_exception_uncommon_trap() const { return code_begin() + _implicit_exception_uncommon_trap_offset; } |
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429 |
0 | 430 }; |
431 | |
432 | |
433 //---------------------------------------------------------------------------------------------------- | |
434 // UncommonTrapBlob (currently only used by Compiler 2) | |
435 | |
436 #ifdef COMPILER2 | |
437 | |
438 class UncommonTrapBlob: public SingletonBlob { | |
439 friend class VMStructs; | |
440 private: | |
441 // Creation support | |
442 UncommonTrapBlob( | |
443 CodeBuffer* cb, | |
444 int size, | |
445 OopMapSet* oop_maps, | |
446 int frame_size | |
447 ); | |
448 | |
449 public: | |
450 // Creation | |
451 static UncommonTrapBlob* create( | |
452 CodeBuffer* cb, | |
453 OopMapSet* oop_maps, | |
454 int frame_size | |
455 ); | |
456 | |
457 // GC for args | |
458 void preserve_callee_argument_oops(frame fr, const RegisterMap *reg_map, OopClosure* f) { /* nothing to do */ } | |
459 | |
460 // Typing | |
461 bool is_uncommon_trap_stub() const { return true; } | |
462 }; | |
463 | |
464 | |
465 //---------------------------------------------------------------------------------------------------- | |
466 // ExceptionBlob: used for exception unwinding in compiled code (currently only used by Compiler 2) | |
467 | |
468 class ExceptionBlob: public SingletonBlob { | |
469 friend class VMStructs; | |
470 private: | |
471 // Creation support | |
472 ExceptionBlob( | |
473 CodeBuffer* cb, | |
474 int size, | |
475 OopMapSet* oop_maps, | |
476 int frame_size | |
477 ); | |
478 | |
479 public: | |
480 // Creation | |
481 static ExceptionBlob* create( | |
482 CodeBuffer* cb, | |
483 OopMapSet* oop_maps, | |
484 int frame_size | |
485 ); | |
486 | |
487 // GC for args | |
488 void preserve_callee_argument_oops(frame fr, const RegisterMap* reg_map, OopClosure* f) { /* nothing to do */ } | |
489 | |
490 // Typing | |
491 bool is_exception_stub() const { return true; } | |
492 }; | |
493 #endif // COMPILER2 | |
494 | |
495 | |
496 //---------------------------------------------------------------------------------------------------- | |
497 // SafepointBlob: handles illegal_instruction exceptions during a safepoint | |
498 | |
499 class SafepointBlob: public SingletonBlob { | |
500 friend class VMStructs; | |
501 private: | |
502 // Creation support | |
503 SafepointBlob( | |
504 CodeBuffer* cb, | |
505 int size, | |
506 OopMapSet* oop_maps, | |
507 int frame_size | |
508 ); | |
509 | |
510 public: | |
511 // Creation | |
512 static SafepointBlob* create( | |
513 CodeBuffer* cb, | |
514 OopMapSet* oop_maps, | |
515 int frame_size | |
516 ); | |
517 | |
518 // GC for args | |
519 void preserve_callee_argument_oops(frame fr, const RegisterMap* reg_map, OopClosure* f) { /* nothing to do */ } | |
520 | |
521 // Typing | |
522 bool is_safepoint_stub() const { return true; } | |
523 }; | |
1972 | 524 |
525 #endif // SHARE_VM_CODE_CODEBLOB_HPP |