Mercurial > hg > graal-compiler
annotate src/share/vm/code/codeBlob.hpp @ 6275:957c266d8bc5
Merge with http://hg.openjdk.java.net/hsx/hsx24/hotspot/
| author | Doug Simon <doug.simon@oracle.com> |
|---|---|
| date | Tue, 21 Aug 2012 10:39:19 +0200 |
| parents | 422c979ff392 1d7922586cf6 |
| children | e522a00b91aa |
| rev | line source |
|---|---|
| 0 | 1 /* |
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2 * Copyright (c) 1998, 2010, 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 friend class OopRecorder; | |
| 72 | |
| 73 public: | |
| 74 // Returns the space needed for CodeBlob | |
| 75 static unsigned int allocation_size(CodeBuffer* cb, int header_size); | |
| 76 | |
| 77 // Creation | |
| 78 // a) simple CodeBlob | |
| 79 // frame_complete is the offset from the beginning of the instructions | |
| 80 // to where the frame setup (from stackwalk viewpoint) is complete. | |
| 81 CodeBlob(const char* name, int header_size, int size, int frame_complete, int locs_size); | |
| 82 | |
| 83 // b) full CodeBlob | |
| 84 CodeBlob( | |
| 85 const char* name, | |
| 86 CodeBuffer* cb, | |
| 87 int header_size, | |
| 88 int size, | |
| 89 int frame_complete, | |
| 90 int frame_size, | |
| 91 OopMapSet* oop_maps | |
| 92 ); | |
| 93 | |
| 94 // Deletion | |
| 95 void flush(); | |
| 96 | |
| 97 // Typing | |
|
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98 virtual bool is_buffer_blob() const { return false; } |
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99 virtual bool is_nmethod() const { return false; } |
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100 virtual bool is_runtime_stub() const { return false; } |
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101 virtual bool is_deoptimization_stub() const { return false; } |
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102 virtual bool is_uncommon_trap_stub() const { return false; } |
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103 virtual bool is_exception_stub() const { return false; } |
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104 virtual bool is_safepoint_stub() const { return false; } |
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105 virtual bool is_adapter_blob() const { return false; } |
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106 virtual bool is_method_handles_adapter_blob() const { return false; } |
| 0 | 107 |
| 108 virtual bool is_compiled_by_c2() const { return false; } | |
| 109 virtual bool is_compiled_by_c1() const { return false; } | |
| 110 | |
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111 // Casting |
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112 nmethod* as_nmethod_or_null() { return is_nmethod() ? (nmethod*) this : NULL; } |
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113 |
| 0 | 114 // Boundaries |
| 115 address header_begin() const { return (address) this; } | |
| 116 address header_end() const { return ((address) this) + _header_size; }; | |
| 117 relocInfo* relocation_begin() const { return (relocInfo*) header_end(); }; | |
| 118 relocInfo* relocation_end() const { return (relocInfo*)(header_end() + _relocation_size); } | |
| 1748 | 119 address content_begin() const { return (address) header_begin() + _content_offset; } |
| 120 address content_end() const { return (address) header_begin() + _data_offset; } | |
| 121 address code_begin() const { return (address) header_begin() + _code_offset; } | |
| 122 address code_end() const { return (address) header_begin() + _data_offset; } | |
| 0 | 123 address data_begin() const { return (address) header_begin() + _data_offset; } |
| 124 address data_end() const { return (address) header_begin() + _size; } | |
| 125 | |
| 126 // Offsets | |
| 127 int relocation_offset() const { return _header_size; } | |
| 1748 | 128 int content_offset() const { return _content_offset; } |
| 129 int code_offset() const { return _code_offset; } | |
| 0 | 130 int data_offset() const { return _data_offset; } |
| 131 | |
| 132 // Sizes | |
| 133 int size() const { return _size; } | |
| 134 int header_size() const { return _header_size; } | |
| 135 int relocation_size() const { return (address) relocation_end() - (address) relocation_begin(); } | |
| 1748 | 136 int content_size() const { return content_end() - content_begin(); } |
| 137 int code_size() const { return code_end() - code_begin(); } | |
| 138 int data_size() const { return data_end() - data_begin(); } | |
| 0 | 139 |
| 140 // Containment | |
| 1748 | 141 bool blob_contains(address addr) const { return header_begin() <= addr && addr < data_end(); } |
| 0 | 142 bool relocation_contains(relocInfo* addr) const{ return relocation_begin() <= addr && addr < relocation_end(); } |
| 1748 | 143 bool content_contains(address addr) const { return content_begin() <= addr && addr < content_end(); } |
| 144 bool code_contains(address addr) const { return code_begin() <= addr && addr < code_end(); } | |
| 145 bool data_contains(address addr) const { return data_begin() <= addr && addr < data_end(); } | |
| 146 bool contains(address addr) const { return content_contains(addr); } | |
| 147 bool is_frame_complete_at(address addr) const { return code_contains(addr) && | |
| 148 addr >= code_begin() + _frame_complete_offset; } | |
| 0 | 149 |
| 150 // CodeCache support: really only used by the nmethods, but in order to get | |
| 151 // asserts and certain bookkeeping to work in the CodeCache they are defined | |
| 152 // virtual here. | |
| 153 virtual bool is_zombie() const { return false; } | |
| 154 virtual bool is_locked_by_vm() const { return false; } | |
| 155 | |
| 156 virtual bool is_unloaded() const { return false; } | |
| 157 virtual bool is_not_entrant() const { return false; } | |
| 158 | |
| 159 // GC support | |
| 160 virtual bool is_alive() const = 0; | |
| 161 | |
| 162 // OopMap for frame | |
| 163 OopMapSet* oop_maps() const { return _oop_maps; } | |
| 164 void set_oop_maps(OopMapSet* p); | |
| 165 OopMap* oop_map_for_return_address(address return_address); | |
| 166 virtual void preserve_callee_argument_oops(frame fr, const RegisterMap* reg_map, OopClosure* f) { ShouldNotReachHere(); } | |
| 167 | |
| 168 // Frame support | |
| 169 int frame_size() const { return _frame_size; } | |
| 170 void set_frame_size(int size) { _frame_size = size; } | |
| 171 | |
| 172 // Returns true, if the next frame is responsible for GC'ing oops passed as arguments | |
| 173 virtual bool caller_must_gc_arguments(JavaThread* thread) const { return false; } | |
| 174 | |
| 175 // Naming | |
| 176 const char* name() const { return _name; } | |
| 177 void set_name(const char* name) { _name = name; } | |
| 178 | |
| 179 // Debugging | |
| 180 virtual void verify(); | |
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181 void print() const { print_on(tty); } |
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182 virtual void print_on(outputStream* st) const; |
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183 virtual void print_value_on(outputStream* st) const; |
| 0 | 184 |
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185 // Deal with Disassembler, VTune, Forte, JvmtiExport, MemoryService. |
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186 static void trace_new_stub(CodeBlob* blob, const char* name1, const char* name2 = ""); |
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187 |
| 0 | 188 // Print the comment associated with offset on stream, if there is one |
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189 virtual void print_block_comment(outputStream* stream, address block_begin) { |
| 1748 | 190 intptr_t offset = (intptr_t)(block_begin - code_begin()); |
| 0 | 191 _comments.print_block_comment(stream, offset); |
| 192 } | |
| 193 | |
| 194 // Transfer ownership of comments to this CodeBlob | |
| 195 void set_comments(CodeComments& comments) { | |
| 196 _comments.assign(comments); | |
| 197 } | |
| 198 }; | |
| 199 | |
| 200 | |
| 201 //---------------------------------------------------------------------------------------------------- | |
| 202 // BufferBlob: used to hold non-relocatable machine code such as the interpreter, stubroutines, etc. | |
| 203 | |
| 204 class BufferBlob: public CodeBlob { | |
| 205 friend class VMStructs; | |
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206 friend class AdapterBlob; |
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207 friend class MethodHandlesAdapterBlob; |
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208 |
| 0 | 209 private: |
| 210 // Creation support | |
| 211 BufferBlob(const char* name, int size); | |
| 212 BufferBlob(const char* name, int size, CodeBuffer* cb); | |
| 213 | |
| 214 void* operator new(size_t s, unsigned size); | |
| 215 | |
| 216 public: | |
| 217 // Creation | |
| 218 static BufferBlob* create(const char* name, int buffer_size); | |
| 219 static BufferBlob* create(const char* name, CodeBuffer* cb); | |
| 220 | |
| 221 static void free(BufferBlob* buf); | |
| 222 | |
| 223 // Typing | |
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224 virtual bool is_buffer_blob() const { return true; } |
| 0 | 225 |
| 226 // GC/Verification support | |
| 227 void preserve_callee_argument_oops(frame fr, const RegisterMap* reg_map, OopClosure* f) { /* nothing to do */ } | |
| 228 bool is_alive() const { return true; } | |
| 229 | |
| 230 void verify(); | |
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231 void print_on(outputStream* st) const; |
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232 void print_value_on(outputStream* st) const; |
| 0 | 233 }; |
| 234 | |
| 235 | |
| 236 //---------------------------------------------------------------------------------------------------- | |
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237 // AdapterBlob: used to hold C2I/I2C adapters |
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238 |
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239 class AdapterBlob: public BufferBlob { |
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240 private: |
| 1663 | 241 AdapterBlob(int size, CodeBuffer* cb); |
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242 |
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243 public: |
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244 // Creation |
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245 static AdapterBlob* create(CodeBuffer* cb); |
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246 |
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247 // Typing |
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248 virtual bool is_adapter_blob() const { return true; } |
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249 }; |
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250 |
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251 |
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252 //---------------------------------------------------------------------------------------------------- |
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253 // MethodHandlesAdapterBlob: used to hold MethodHandles adapters |
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254 |
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255 class MethodHandlesAdapterBlob: public BufferBlob { |
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256 private: |
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257 MethodHandlesAdapterBlob(int size) : BufferBlob("MethodHandles adapters", size) {} |
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258 MethodHandlesAdapterBlob(int size, CodeBuffer* cb) : BufferBlob("MethodHandles adapters", size, cb) {} |
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259 |
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260 public: |
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261 // Creation |
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262 static MethodHandlesAdapterBlob* create(int buffer_size); |
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263 |
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264 // Typing |
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265 virtual bool is_method_handles_adapter_blob() const { return true; } |
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266 }; |
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267 |
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268 |
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269 //---------------------------------------------------------------------------------------------------- |
| 0 | 270 // RuntimeStub: describes stubs used by compiled code to call a (static) C++ runtime routine |
| 271 | |
| 272 class RuntimeStub: public CodeBlob { | |
| 273 friend class VMStructs; | |
| 274 private: | |
| 275 bool _caller_must_gc_arguments; | |
| 276 | |
| 277 // Creation support | |
| 278 RuntimeStub( | |
| 279 const char* name, | |
| 280 CodeBuffer* cb, | |
| 281 int size, | |
| 282 int frame_complete, | |
| 283 int frame_size, | |
| 284 OopMapSet* oop_maps, | |
| 285 bool caller_must_gc_arguments | |
| 286 ); | |
| 287 | |
| 288 void* operator new(size_t s, unsigned size); | |
| 289 | |
| 290 public: | |
| 291 // Creation | |
| 292 static RuntimeStub* new_runtime_stub( | |
| 293 const char* stub_name, | |
| 294 CodeBuffer* cb, | |
| 295 int frame_complete, | |
| 296 int frame_size, | |
| 297 OopMapSet* oop_maps, | |
| 298 bool caller_must_gc_arguments | |
| 299 ); | |
| 300 | |
| 301 // Typing | |
| 302 bool is_runtime_stub() const { return true; } | |
| 303 | |
| 304 // GC support | |
| 305 bool caller_must_gc_arguments(JavaThread* thread) const { return _caller_must_gc_arguments; } | |
| 306 | |
| 1748 | 307 address entry_point() { return code_begin(); } |
| 0 | 308 |
| 309 // GC/Verification support | |
| 310 void preserve_callee_argument_oops(frame fr, const RegisterMap *reg_map, OopClosure* f) { /* nothing to do */ } | |
| 311 bool is_alive() const { return true; } | |
| 312 | |
| 313 void verify(); | |
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314 void print_on(outputStream* st) const; |
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315 void print_value_on(outputStream* st) const; |
| 0 | 316 }; |
| 317 | |
| 318 | |
| 319 //---------------------------------------------------------------------------------------------------- | |
| 320 // Super-class for all blobs that exist in only one instance. Implements default behaviour. | |
| 321 | |
| 322 class SingletonBlob: public CodeBlob { | |
| 323 friend class VMStructs; | |
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324 |
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325 protected: |
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326 void* operator new(size_t s, unsigned size); |
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327 |
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328 public: |
| 0 | 329 SingletonBlob( |
| 330 const char* name, | |
| 331 CodeBuffer* cb, | |
| 332 int header_size, | |
| 333 int size, | |
| 334 int frame_size, | |
| 335 OopMapSet* oop_maps | |
| 336 ) | |
| 337 : CodeBlob(name, cb, header_size, size, CodeOffsets::frame_never_safe, frame_size, oop_maps) | |
| 1748 | 338 {}; |
| 0 | 339 |
| 1748 | 340 address entry_point() { return code_begin(); } |
| 0 | 341 |
| 1748 | 342 bool is_alive() const { return true; } |
| 343 | |
| 344 void verify(); // does nothing | |
| 345 void print_on(outputStream* st) const; | |
| 346 void print_value_on(outputStream* st) const; | |
| 0 | 347 }; |
| 348 | |
| 349 | |
| 350 //---------------------------------------------------------------------------------------------------- | |
| 351 // DeoptimizationBlob | |
| 352 | |
| 353 class DeoptimizationBlob: public SingletonBlob { | |
| 354 friend class VMStructs; | |
| 355 private: | |
| 356 int _unpack_offset; | |
| 357 int _unpack_with_exception; | |
| 358 int _unpack_with_reexecution; | |
| 359 | |
| 360 int _unpack_with_exception_in_tls; | |
| 361 | |
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362 // (thomaswue) Offset when graal calls uncommon_trap. |
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363 int _uncommon_trap_offset; |
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364 int _implicit_exception_uncommon_trap_offset; |
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365 |
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366 |
| 0 | 367 // Creation support |
| 368 DeoptimizationBlob( | |
| 369 CodeBuffer* cb, | |
| 370 int size, | |
| 371 OopMapSet* oop_maps, | |
| 372 int unpack_offset, | |
| 373 int unpack_with_exception_offset, | |
| 374 int unpack_with_reexecution_offset, | |
| 375 int frame_size | |
| 376 ); | |
| 377 | |
| 378 public: | |
| 379 // Creation | |
| 380 static DeoptimizationBlob* create( | |
| 381 CodeBuffer* cb, | |
| 382 OopMapSet* oop_maps, | |
| 383 int unpack_offset, | |
| 384 int unpack_with_exception_offset, | |
| 385 int unpack_with_reexecution_offset, | |
| 386 int frame_size | |
| 387 ); | |
| 388 | |
| 389 // Typing | |
| 390 bool is_deoptimization_stub() const { return true; } | |
| 391 bool exception_address_is_unpack_entry(address pc) const { | |
| 392 address unpack_pc = unpack(); | |
| 393 return (pc == unpack_pc || (pc + frame::pc_return_offset) == unpack_pc); | |
| 394 } | |
| 395 | |
| 396 | |
| 397 | |
| 398 | |
| 399 // GC for args | |
| 400 void preserve_callee_argument_oops(frame fr, const RegisterMap *reg_map, OopClosure* f) { /* Nothing to do */ } | |
| 401 | |
| 402 // Printing | |
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403 void print_value_on(outputStream* st) const; |
| 0 | 404 |
| 1748 | 405 address unpack() const { return code_begin() + _unpack_offset; } |
| 406 address unpack_with_exception() const { return code_begin() + _unpack_with_exception; } | |
| 407 address unpack_with_reexecution() const { return code_begin() + _unpack_with_reexecution; } | |
| 0 | 408 |
| 409 // Alternate entry point for C1 where the exception and issuing pc | |
| 410 // are in JavaThread::_exception_oop and JavaThread::_exception_pc | |
| 411 // instead of being in registers. This is needed because C1 doesn't | |
| 412 // model exception paths in a way that keeps these registers free so | |
| 413 // there may be live values in those registers during deopt. | |
| 414 void set_unpack_with_exception_in_tls_offset(int offset) { | |
| 415 _unpack_with_exception_in_tls = offset; | |
| 1748 | 416 assert(code_contains(code_begin() + _unpack_with_exception_in_tls), "must be PC inside codeblob"); |
| 0 | 417 } |
| 1748 | 418 address unpack_with_exception_in_tls() const { return code_begin() + _unpack_with_exception_in_tls; } |
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419 |
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420 // (thomaswue) Offset when graal calls uncommon_trap. |
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421 void set_uncommon_trap_offset(int offset) { |
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422 _uncommon_trap_offset = offset; |
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423 assert(contains(code_begin() + _uncommon_trap_offset), "must be PC inside codeblob"); |
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424 } |
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425 address uncommon_trap() const { return code_begin() + _uncommon_trap_offset; } |
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426 void set_implicit_exception_uncommon_trap_offset(int offset) { |
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427 _implicit_exception_uncommon_trap_offset = offset; |
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428 assert(contains(code_begin() + _implicit_exception_uncommon_trap_offset), "must be PC inside codeblob"); |
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429 } |
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430 address implicit_exception_uncommon_trap() const { return code_begin() + _implicit_exception_uncommon_trap_offset; } |
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431 |
| 0 | 432 }; |
| 433 | |
| 434 | |
| 435 //---------------------------------------------------------------------------------------------------- | |
| 436 // UncommonTrapBlob (currently only used by Compiler 2) | |
| 437 | |
| 438 #ifdef COMPILER2 | |
| 439 | |
| 440 class UncommonTrapBlob: public SingletonBlob { | |
| 441 friend class VMStructs; | |
| 442 private: | |
| 443 // Creation support | |
| 444 UncommonTrapBlob( | |
| 445 CodeBuffer* cb, | |
| 446 int size, | |
| 447 OopMapSet* oop_maps, | |
| 448 int frame_size | |
| 449 ); | |
| 450 | |
| 451 public: | |
| 452 // Creation | |
| 453 static UncommonTrapBlob* create( | |
| 454 CodeBuffer* cb, | |
| 455 OopMapSet* oop_maps, | |
| 456 int frame_size | |
| 457 ); | |
| 458 | |
| 459 // GC for args | |
| 460 void preserve_callee_argument_oops(frame fr, const RegisterMap *reg_map, OopClosure* f) { /* nothing to do */ } | |
| 461 | |
| 462 // Typing | |
| 463 bool is_uncommon_trap_stub() const { return true; } | |
| 464 }; | |
| 465 | |
| 466 | |
| 467 //---------------------------------------------------------------------------------------------------- | |
| 468 // ExceptionBlob: used for exception unwinding in compiled code (currently only used by Compiler 2) | |
| 469 | |
| 470 class ExceptionBlob: public SingletonBlob { | |
| 471 friend class VMStructs; | |
| 472 private: | |
| 473 // Creation support | |
| 474 ExceptionBlob( | |
| 475 CodeBuffer* cb, | |
| 476 int size, | |
| 477 OopMapSet* oop_maps, | |
| 478 int frame_size | |
| 479 ); | |
| 480 | |
| 481 public: | |
| 482 // Creation | |
| 483 static ExceptionBlob* create( | |
| 484 CodeBuffer* cb, | |
| 485 OopMapSet* oop_maps, | |
| 486 int frame_size | |
| 487 ); | |
| 488 | |
| 489 // GC for args | |
| 490 void preserve_callee_argument_oops(frame fr, const RegisterMap* reg_map, OopClosure* f) { /* nothing to do */ } | |
| 491 | |
| 492 // Typing | |
| 493 bool is_exception_stub() const { return true; } | |
| 494 }; | |
| 495 #endif // COMPILER2 | |
| 496 | |
| 497 | |
| 498 //---------------------------------------------------------------------------------------------------- | |
| 499 // SafepointBlob: handles illegal_instruction exceptions during a safepoint | |
| 500 | |
| 501 class SafepointBlob: public SingletonBlob { | |
| 502 friend class VMStructs; | |
| 503 private: | |
| 504 // Creation support | |
| 505 SafepointBlob( | |
| 506 CodeBuffer* cb, | |
| 507 int size, | |
| 508 OopMapSet* oop_maps, | |
| 509 int frame_size | |
| 510 ); | |
| 511 | |
| 512 public: | |
| 513 // Creation | |
| 514 static SafepointBlob* create( | |
| 515 CodeBuffer* cb, | |
| 516 OopMapSet* oop_maps, | |
| 517 int frame_size | |
| 518 ); | |
| 519 | |
| 520 // GC for args | |
| 521 void preserve_callee_argument_oops(frame fr, const RegisterMap* reg_map, OopClosure* f) { /* nothing to do */ } | |
| 522 | |
| 523 // Typing | |
| 524 bool is_safepoint_stub() const { return true; } | |
| 525 }; | |
| 1972 | 526 |
| 527 #endif // SHARE_VM_CODE_CODEBLOB_HPP |