Mercurial > hg > graal-compiler
annotate src/share/vm/code/codeBlob.hpp @ 18027:9f169829d0e1
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0 | 1 /* |
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2 * Copyright (c) 1998, 2013, 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 | |
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69 CodeStrings _strings; |
0 | 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()); |
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189 _strings.print_block_comment(stream, offset); |
0 | 190 } |
191 | |
192 // Transfer ownership of comments to this CodeBlob | |
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193 void set_strings(CodeStrings& strings) { |
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194 _strings.assign(strings); |
0 | 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 | |
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212 void* operator new(size_t s, unsigned size, bool is_critical = false) throw(); |
0 | 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 |
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257 public: |
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258 // Creation |
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259 static MethodHandlesAdapterBlob* create(int buffer_size); |
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260 |
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261 // Typing |
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262 virtual bool is_method_handles_adapter_blob() const { return true; } |
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263 }; |
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264 |
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265 |
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266 //---------------------------------------------------------------------------------------------------- |
0 | 267 // RuntimeStub: describes stubs used by compiled code to call a (static) C++ runtime routine |
268 | |
269 class RuntimeStub: public CodeBlob { | |
270 friend class VMStructs; | |
271 private: | |
272 bool _caller_must_gc_arguments; | |
273 | |
274 // Creation support | |
275 RuntimeStub( | |
276 const char* name, | |
277 CodeBuffer* cb, | |
278 int size, | |
279 int frame_complete, | |
280 int frame_size, | |
281 OopMapSet* oop_maps, | |
282 bool caller_must_gc_arguments | |
283 ); | |
284 | |
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285 void* operator new(size_t s, unsigned size) throw(); |
0 | 286 |
287 public: | |
288 // Creation | |
289 static RuntimeStub* new_runtime_stub( | |
290 const char* stub_name, | |
291 CodeBuffer* cb, | |
292 int frame_complete, | |
293 int frame_size, | |
294 OopMapSet* oop_maps, | |
295 bool caller_must_gc_arguments | |
296 ); | |
297 | |
298 // Typing | |
299 bool is_runtime_stub() const { return true; } | |
300 | |
301 // GC support | |
302 bool caller_must_gc_arguments(JavaThread* thread) const { return _caller_must_gc_arguments; } | |
303 | |
1748 | 304 address entry_point() { return code_begin(); } |
0 | 305 |
306 // GC/Verification support | |
307 void preserve_callee_argument_oops(frame fr, const RegisterMap *reg_map, OopClosure* f) { /* nothing to do */ } | |
308 bool is_alive() const { return true; } | |
309 | |
310 void verify(); | |
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311 void print_on(outputStream* st) const; |
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312 void print_value_on(outputStream* st) const; |
0 | 313 }; |
314 | |
315 | |
316 //---------------------------------------------------------------------------------------------------- | |
317 // Super-class for all blobs that exist in only one instance. Implements default behaviour. | |
318 | |
319 class SingletonBlob: public CodeBlob { | |
320 friend class VMStructs; | |
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321 |
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322 protected: |
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323 void* operator new(size_t s, unsigned size) throw(); |
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325 public: |
0 | 326 SingletonBlob( |
327 const char* name, | |
328 CodeBuffer* cb, | |
329 int header_size, | |
330 int size, | |
331 int frame_size, | |
332 OopMapSet* oop_maps | |
333 ) | |
334 : CodeBlob(name, cb, header_size, size, CodeOffsets::frame_never_safe, frame_size, oop_maps) | |
1748 | 335 {}; |
0 | 336 |
1748 | 337 address entry_point() { return code_begin(); } |
0 | 338 |
1748 | 339 bool is_alive() const { return true; } |
340 | |
341 void verify(); // does nothing | |
342 void print_on(outputStream* st) const; | |
343 void print_value_on(outputStream* st) const; | |
0 | 344 }; |
345 | |
346 | |
347 //---------------------------------------------------------------------------------------------------- | |
348 // DeoptimizationBlob | |
349 | |
350 class DeoptimizationBlob: public SingletonBlob { | |
351 friend class VMStructs; | |
352 private: | |
353 int _unpack_offset; | |
354 int _unpack_with_exception; | |
355 int _unpack_with_reexecution; | |
356 | |
357 int _unpack_with_exception_in_tls; | |
358 | |
359 // Creation support | |
360 DeoptimizationBlob( | |
361 CodeBuffer* cb, | |
362 int size, | |
363 OopMapSet* oop_maps, | |
364 int unpack_offset, | |
365 int unpack_with_exception_offset, | |
366 int unpack_with_reexecution_offset, | |
367 int frame_size | |
368 ); | |
369 | |
370 public: | |
371 // Creation | |
372 static DeoptimizationBlob* create( | |
373 CodeBuffer* cb, | |
374 OopMapSet* oop_maps, | |
375 int unpack_offset, | |
376 int unpack_with_exception_offset, | |
377 int unpack_with_reexecution_offset, | |
378 int frame_size | |
379 ); | |
380 | |
381 // Typing | |
382 bool is_deoptimization_stub() const { return true; } | |
383 bool exception_address_is_unpack_entry(address pc) const { | |
384 address unpack_pc = unpack(); | |
385 return (pc == unpack_pc || (pc + frame::pc_return_offset) == unpack_pc); | |
386 } | |
387 | |
388 | |
389 | |
390 | |
391 // GC for args | |
392 void preserve_callee_argument_oops(frame fr, const RegisterMap *reg_map, OopClosure* f) { /* Nothing to do */ } | |
393 | |
394 // Printing | |
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395 void print_value_on(outputStream* st) const; |
0 | 396 |
1748 | 397 address unpack() const { return code_begin() + _unpack_offset; } |
398 address unpack_with_exception() const { return code_begin() + _unpack_with_exception; } | |
399 address unpack_with_reexecution() const { return code_begin() + _unpack_with_reexecution; } | |
0 | 400 |
401 // Alternate entry point for C1 where the exception and issuing pc | |
402 // are in JavaThread::_exception_oop and JavaThread::_exception_pc | |
403 // instead of being in registers. This is needed because C1 doesn't | |
404 // model exception paths in a way that keeps these registers free so | |
405 // there may be live values in those registers during deopt. | |
406 void set_unpack_with_exception_in_tls_offset(int offset) { | |
407 _unpack_with_exception_in_tls = offset; | |
1748 | 408 assert(code_contains(code_begin() + _unpack_with_exception_in_tls), "must be PC inside codeblob"); |
0 | 409 } |
1748 | 410 address unpack_with_exception_in_tls() const { return code_begin() + _unpack_with_exception_in_tls; } |
0 | 411 }; |
412 | |
413 | |
414 //---------------------------------------------------------------------------------------------------- | |
415 // UncommonTrapBlob (currently only used by Compiler 2) | |
416 | |
417 #ifdef COMPILER2 | |
418 | |
419 class UncommonTrapBlob: public SingletonBlob { | |
420 friend class VMStructs; | |
421 private: | |
422 // Creation support | |
423 UncommonTrapBlob( | |
424 CodeBuffer* cb, | |
425 int size, | |
426 OopMapSet* oop_maps, | |
427 int frame_size | |
428 ); | |
429 | |
430 public: | |
431 // Creation | |
432 static UncommonTrapBlob* create( | |
433 CodeBuffer* cb, | |
434 OopMapSet* oop_maps, | |
435 int frame_size | |
436 ); | |
437 | |
438 // GC for args | |
439 void preserve_callee_argument_oops(frame fr, const RegisterMap *reg_map, OopClosure* f) { /* nothing to do */ } | |
440 | |
441 // Typing | |
442 bool is_uncommon_trap_stub() const { return true; } | |
443 }; | |
444 | |
445 | |
446 //---------------------------------------------------------------------------------------------------- | |
447 // ExceptionBlob: used for exception unwinding in compiled code (currently only used by Compiler 2) | |
448 | |
449 class ExceptionBlob: public SingletonBlob { | |
450 friend class VMStructs; | |
451 private: | |
452 // Creation support | |
453 ExceptionBlob( | |
454 CodeBuffer* cb, | |
455 int size, | |
456 OopMapSet* oop_maps, | |
457 int frame_size | |
458 ); | |
459 | |
460 public: | |
461 // Creation | |
462 static ExceptionBlob* create( | |
463 CodeBuffer* cb, | |
464 OopMapSet* oop_maps, | |
465 int frame_size | |
466 ); | |
467 | |
468 // GC for args | |
469 void preserve_callee_argument_oops(frame fr, const RegisterMap* reg_map, OopClosure* f) { /* nothing to do */ } | |
470 | |
471 // Typing | |
472 bool is_exception_stub() const { return true; } | |
473 }; | |
474 #endif // COMPILER2 | |
475 | |
476 | |
477 //---------------------------------------------------------------------------------------------------- | |
478 // SafepointBlob: handles illegal_instruction exceptions during a safepoint | |
479 | |
480 class SafepointBlob: public SingletonBlob { | |
481 friend class VMStructs; | |
482 private: | |
483 // Creation support | |
484 SafepointBlob( | |
485 CodeBuffer* cb, | |
486 int size, | |
487 OopMapSet* oop_maps, | |
488 int frame_size | |
489 ); | |
490 | |
491 public: | |
492 // Creation | |
493 static SafepointBlob* create( | |
494 CodeBuffer* cb, | |
495 OopMapSet* oop_maps, | |
496 int frame_size | |
497 ); | |
498 | |
499 // GC for args | |
500 void preserve_callee_argument_oops(frame fr, const RegisterMap* reg_map, OopClosure* f) { /* nothing to do */ } | |
501 | |
502 // Typing | |
503 bool is_safepoint_stub() const { return true; } | |
504 }; | |
1972 | 505 |
506 #endif // SHARE_VM_CODE_CODEBLOB_HPP |