Tue, 05 Jan 2010 16:12:26 -0800
6914002: unsigned compare problem after 5057818
Reviewed-by: kvn, twisti
duke@435 | 1 | /* |
twisti@1570 | 2 | * Copyright 1998-2009 Sun Microsystems, Inc. All Rights Reserved. |
duke@435 | 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
duke@435 | 4 | * |
duke@435 | 5 | * This code is free software; you can redistribute it and/or modify it |
duke@435 | 6 | * under the terms of the GNU General Public License version 2 only, as |
duke@435 | 7 | * published by the Free Software Foundation. |
duke@435 | 8 | * |
duke@435 | 9 | * This code is distributed in the hope that it will be useful, but WITHOUT |
duke@435 | 10 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
duke@435 | 11 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
duke@435 | 12 | * version 2 for more details (a copy is included in the LICENSE file that |
duke@435 | 13 | * accompanied this code). |
duke@435 | 14 | * |
duke@435 | 15 | * You should have received a copy of the GNU General Public License version |
duke@435 | 16 | * 2 along with this work; if not, write to the Free Software Foundation, |
duke@435 | 17 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
duke@435 | 18 | * |
duke@435 | 19 | * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
duke@435 | 20 | * CA 95054 USA or visit www.sun.com if you need additional information or |
duke@435 | 21 | * have any questions. |
duke@435 | 22 | * |
duke@435 | 23 | */ |
duke@435 | 24 | |
duke@435 | 25 | // CodeBlob - superclass for all entries in the CodeCache. |
duke@435 | 26 | // |
duke@435 | 27 | // Suptypes are: |
duke@435 | 28 | // nmethod : Compiled Java methods (include method that calls to native code) |
duke@435 | 29 | // RuntimeStub : Call to VM runtime methods |
duke@435 | 30 | // DeoptimizationBlob : Used for deoptimizatation |
duke@435 | 31 | // ExceptionBlob : Used for stack unrolling |
duke@435 | 32 | // SafepointBlob : Used to handle illegal instruction exceptions |
duke@435 | 33 | // |
duke@435 | 34 | // |
duke@435 | 35 | // Layout: |
duke@435 | 36 | // - header |
duke@435 | 37 | // - relocation |
duke@435 | 38 | // - instruction space |
duke@435 | 39 | // - data space |
duke@435 | 40 | class DeoptimizationBlob; |
duke@435 | 41 | |
duke@435 | 42 | class CodeBlob VALUE_OBJ_CLASS_SPEC { |
duke@435 | 43 | |
duke@435 | 44 | friend class VMStructs; |
duke@435 | 45 | |
duke@435 | 46 | private: |
duke@435 | 47 | const char* _name; |
duke@435 | 48 | int _size; // total size of CodeBlob in bytes |
duke@435 | 49 | int _header_size; // size of header (depends on subclass) |
duke@435 | 50 | int _relocation_size; // size of relocation |
duke@435 | 51 | int _instructions_offset; // offset to where instructions region begins |
duke@435 | 52 | int _frame_complete_offset; // instruction offsets in [0.._frame_complete_offset) have |
duke@435 | 53 | // not finished setting up their frame. Beware of pc's in |
duke@435 | 54 | // that range. There is a similar range(s) on returns |
duke@435 | 55 | // which we don't detect. |
duke@435 | 56 | int _data_offset; // offset to where data region begins |
duke@435 | 57 | int _oops_offset; // offset to where embedded oop table begins (inside data) |
duke@435 | 58 | int _oops_length; // number of embedded oops |
duke@435 | 59 | int _frame_size; // size of stack frame |
duke@435 | 60 | OopMapSet* _oop_maps; // OopMap for this CodeBlob |
duke@435 | 61 | CodeComments _comments; |
duke@435 | 62 | |
duke@435 | 63 | friend class OopRecorder; |
duke@435 | 64 | |
duke@435 | 65 | void fix_oop_relocations(address begin, address end, bool initialize_immediates); |
duke@435 | 66 | inline void initialize_immediate_oop(oop* dest, jobject handle); |
duke@435 | 67 | |
duke@435 | 68 | public: |
duke@435 | 69 | // Returns the space needed for CodeBlob |
duke@435 | 70 | static unsigned int allocation_size(CodeBuffer* cb, int header_size); |
duke@435 | 71 | |
duke@435 | 72 | // Creation |
duke@435 | 73 | // a) simple CodeBlob |
duke@435 | 74 | // frame_complete is the offset from the beginning of the instructions |
duke@435 | 75 | // to where the frame setup (from stackwalk viewpoint) is complete. |
duke@435 | 76 | CodeBlob(const char* name, int header_size, int size, int frame_complete, int locs_size); |
duke@435 | 77 | |
duke@435 | 78 | // b) full CodeBlob |
duke@435 | 79 | CodeBlob( |
duke@435 | 80 | const char* name, |
duke@435 | 81 | CodeBuffer* cb, |
duke@435 | 82 | int header_size, |
duke@435 | 83 | int size, |
duke@435 | 84 | int frame_complete, |
duke@435 | 85 | int frame_size, |
duke@435 | 86 | OopMapSet* oop_maps |
duke@435 | 87 | ); |
duke@435 | 88 | |
duke@435 | 89 | // Deletion |
duke@435 | 90 | void flush(); |
duke@435 | 91 | |
duke@435 | 92 | // Typing |
duke@435 | 93 | virtual bool is_buffer_blob() const { return false; } |
duke@435 | 94 | virtual bool is_nmethod() const { return false; } |
duke@435 | 95 | virtual bool is_runtime_stub() const { return false; } |
duke@435 | 96 | virtual bool is_deoptimization_stub() const { return false; } |
duke@435 | 97 | virtual bool is_uncommon_trap_stub() const { return false; } |
duke@435 | 98 | virtual bool is_exception_stub() const { return false; } |
duke@435 | 99 | virtual bool is_safepoint_stub() const { return false; } |
duke@435 | 100 | virtual bool is_adapter_blob() const { return false; } |
duke@435 | 101 | |
duke@435 | 102 | virtual bool is_compiled_by_c2() const { return false; } |
duke@435 | 103 | virtual bool is_compiled_by_c1() const { return false; } |
duke@435 | 104 | |
twisti@1570 | 105 | // Casting |
twisti@1570 | 106 | nmethod* as_nmethod_or_null() { return is_nmethod() ? (nmethod*) this : NULL; } |
twisti@1570 | 107 | |
duke@435 | 108 | // Boundaries |
duke@435 | 109 | address header_begin() const { return (address) this; } |
duke@435 | 110 | address header_end() const { return ((address) this) + _header_size; }; |
duke@435 | 111 | relocInfo* relocation_begin() const { return (relocInfo*) header_end(); }; |
duke@435 | 112 | relocInfo* relocation_end() const { return (relocInfo*)(header_end() + _relocation_size); } |
duke@435 | 113 | address instructions_begin() const { return (address) header_begin() + _instructions_offset; } |
duke@435 | 114 | address instructions_end() const { return (address) header_begin() + _data_offset; } |
duke@435 | 115 | address data_begin() const { return (address) header_begin() + _data_offset; } |
duke@435 | 116 | address data_end() const { return (address) header_begin() + _size; } |
duke@435 | 117 | oop* oops_begin() const { return (oop*) (header_begin() + _oops_offset); } |
duke@435 | 118 | oop* oops_end() const { return oops_begin() + _oops_length; } |
duke@435 | 119 | |
duke@435 | 120 | // Offsets |
duke@435 | 121 | int relocation_offset() const { return _header_size; } |
duke@435 | 122 | int instructions_offset() const { return _instructions_offset; } |
duke@435 | 123 | int data_offset() const { return _data_offset; } |
duke@435 | 124 | int oops_offset() const { return _oops_offset; } |
duke@435 | 125 | |
duke@435 | 126 | // Sizes |
duke@435 | 127 | int size() const { return _size; } |
duke@435 | 128 | int header_size() const { return _header_size; } |
duke@435 | 129 | int relocation_size() const { return (address) relocation_end() - (address) relocation_begin(); } |
duke@435 | 130 | int instructions_size() const { return instructions_end() - instructions_begin(); } |
duke@435 | 131 | int data_size() const { return data_end() - data_begin(); } |
duke@435 | 132 | int oops_size() const { return (address) oops_end() - (address) oops_begin(); } |
duke@435 | 133 | |
duke@435 | 134 | // Containment |
duke@435 | 135 | bool blob_contains(address addr) const { return header_begin() <= addr && addr < data_end(); } |
duke@435 | 136 | bool relocation_contains(relocInfo* addr) const{ return relocation_begin() <= addr && addr < relocation_end(); } |
duke@435 | 137 | bool instructions_contains(address addr) const { return instructions_begin() <= addr && addr < instructions_end(); } |
duke@435 | 138 | bool data_contains(address addr) const { return data_begin() <= addr && addr < data_end(); } |
duke@435 | 139 | bool oops_contains(oop* addr) const { return oops_begin() <= addr && addr < oops_end(); } |
duke@435 | 140 | bool contains(address addr) const { return instructions_contains(addr); } |
duke@435 | 141 | bool is_frame_complete_at(address addr) const { return instructions_contains(addr) && |
duke@435 | 142 | addr >= instructions_begin() + _frame_complete_offset; } |
duke@435 | 143 | |
duke@435 | 144 | // Relocation support |
duke@435 | 145 | void fix_oop_relocations(address begin, address end) { |
duke@435 | 146 | fix_oop_relocations(begin, end, false); |
duke@435 | 147 | } |
duke@435 | 148 | void fix_oop_relocations() { |
duke@435 | 149 | fix_oop_relocations(NULL, NULL, false); |
duke@435 | 150 | } |
duke@435 | 151 | relocInfo::relocType reloc_type_for_address(address pc); |
duke@435 | 152 | bool is_at_poll_return(address pc); |
duke@435 | 153 | bool is_at_poll_or_poll_return(address pc); |
duke@435 | 154 | |
duke@435 | 155 | // Support for oops in scopes and relocs: |
duke@435 | 156 | // Note: index 0 is reserved for null. |
duke@435 | 157 | oop oop_at(int index) const { return index == 0? (oop)NULL: *oop_addr_at(index); } |
duke@435 | 158 | oop* oop_addr_at(int index) const{ // for GC |
duke@435 | 159 | // relocation indexes are biased by 1 (because 0 is reserved) |
duke@435 | 160 | assert(index > 0 && index <= _oops_length, "must be a valid non-zero index"); |
duke@435 | 161 | return &oops_begin()[index-1]; |
duke@435 | 162 | } |
duke@435 | 163 | |
duke@435 | 164 | void copy_oops(GrowableArray<jobject>* oops); |
duke@435 | 165 | |
duke@435 | 166 | // CodeCache support: really only used by the nmethods, but in order to get |
duke@435 | 167 | // asserts and certain bookkeeping to work in the CodeCache they are defined |
duke@435 | 168 | // virtual here. |
duke@435 | 169 | virtual bool is_zombie() const { return false; } |
duke@435 | 170 | virtual bool is_locked_by_vm() const { return false; } |
duke@435 | 171 | |
duke@435 | 172 | virtual bool is_unloaded() const { return false; } |
duke@435 | 173 | virtual bool is_not_entrant() const { return false; } |
duke@435 | 174 | |
duke@435 | 175 | // GC support |
duke@435 | 176 | virtual bool is_alive() const = 0; |
duke@435 | 177 | virtual void do_unloading(BoolObjectClosure* is_alive, |
duke@435 | 178 | OopClosure* keep_alive, |
duke@435 | 179 | bool unloading_occurred); |
duke@435 | 180 | virtual void oops_do(OopClosure* f) = 0; |
jrose@1424 | 181 | // (All CodeBlob subtypes other than NMethod currently have |
jrose@1424 | 182 | // an empty oops_do() method. |
duke@435 | 183 | |
duke@435 | 184 | // OopMap for frame |
duke@435 | 185 | OopMapSet* oop_maps() const { return _oop_maps; } |
duke@435 | 186 | void set_oop_maps(OopMapSet* p); |
duke@435 | 187 | OopMap* oop_map_for_return_address(address return_address); |
duke@435 | 188 | virtual void preserve_callee_argument_oops(frame fr, const RegisterMap* reg_map, OopClosure* f) { ShouldNotReachHere(); } |
duke@435 | 189 | |
duke@435 | 190 | // Frame support |
duke@435 | 191 | int frame_size() const { return _frame_size; } |
duke@435 | 192 | void set_frame_size(int size) { _frame_size = size; } |
duke@435 | 193 | |
duke@435 | 194 | // Returns true, if the next frame is responsible for GC'ing oops passed as arguments |
duke@435 | 195 | virtual bool caller_must_gc_arguments(JavaThread* thread) const { return false; } |
duke@435 | 196 | |
duke@435 | 197 | // Naming |
duke@435 | 198 | const char* name() const { return _name; } |
duke@435 | 199 | void set_name(const char* name) { _name = name; } |
duke@435 | 200 | |
duke@435 | 201 | // Debugging |
duke@435 | 202 | virtual void verify(); |
duke@435 | 203 | virtual void print() const PRODUCT_RETURN; |
duke@435 | 204 | virtual void print_value_on(outputStream* st) const PRODUCT_RETURN; |
duke@435 | 205 | |
duke@435 | 206 | // Print the comment associated with offset on stream, if there is one |
duke@435 | 207 | void print_block_comment(outputStream* stream, intptr_t offset) { |
duke@435 | 208 | _comments.print_block_comment(stream, offset); |
duke@435 | 209 | } |
duke@435 | 210 | |
duke@435 | 211 | // Transfer ownership of comments to this CodeBlob |
duke@435 | 212 | void set_comments(CodeComments& comments) { |
duke@435 | 213 | _comments.assign(comments); |
duke@435 | 214 | } |
duke@435 | 215 | }; |
duke@435 | 216 | |
duke@435 | 217 | |
duke@435 | 218 | //---------------------------------------------------------------------------------------------------- |
duke@435 | 219 | // BufferBlob: used to hold non-relocatable machine code such as the interpreter, stubroutines, etc. |
duke@435 | 220 | |
duke@435 | 221 | class BufferBlob: public CodeBlob { |
duke@435 | 222 | friend class VMStructs; |
duke@435 | 223 | private: |
duke@435 | 224 | // Creation support |
duke@435 | 225 | BufferBlob(const char* name, int size); |
duke@435 | 226 | BufferBlob(const char* name, int size, CodeBuffer* cb); |
duke@435 | 227 | |
duke@435 | 228 | void* operator new(size_t s, unsigned size); |
duke@435 | 229 | |
duke@435 | 230 | public: |
duke@435 | 231 | // Creation |
duke@435 | 232 | static BufferBlob* create(const char* name, int buffer_size); |
duke@435 | 233 | static BufferBlob* create(const char* name, CodeBuffer* cb); |
duke@435 | 234 | |
duke@435 | 235 | static void free(BufferBlob* buf); |
duke@435 | 236 | |
duke@435 | 237 | // Typing |
duke@435 | 238 | bool is_buffer_blob() const { return true; } |
duke@435 | 239 | bool is_adapter_blob() const; |
duke@435 | 240 | |
duke@435 | 241 | // GC/Verification support |
duke@435 | 242 | void preserve_callee_argument_oops(frame fr, const RegisterMap* reg_map, OopClosure* f) { /* nothing to do */ } |
duke@435 | 243 | bool is_alive() const { return true; } |
duke@435 | 244 | void do_unloading(BoolObjectClosure* is_alive, |
duke@435 | 245 | OopClosure* keep_alive, |
duke@435 | 246 | bool unloading_occurred) { /* do nothing */ } |
duke@435 | 247 | |
duke@435 | 248 | void oops_do(OopClosure* f) { /* do nothing*/ } |
duke@435 | 249 | |
duke@435 | 250 | void verify(); |
duke@435 | 251 | void print() const PRODUCT_RETURN; |
duke@435 | 252 | void print_value_on(outputStream* st) const PRODUCT_RETURN; |
duke@435 | 253 | }; |
duke@435 | 254 | |
duke@435 | 255 | |
duke@435 | 256 | //---------------------------------------------------------------------------------------------------- |
duke@435 | 257 | // RuntimeStub: describes stubs used by compiled code to call a (static) C++ runtime routine |
duke@435 | 258 | |
duke@435 | 259 | class RuntimeStub: public CodeBlob { |
duke@435 | 260 | friend class VMStructs; |
duke@435 | 261 | private: |
duke@435 | 262 | bool _caller_must_gc_arguments; |
duke@435 | 263 | |
duke@435 | 264 | // Creation support |
duke@435 | 265 | RuntimeStub( |
duke@435 | 266 | const char* name, |
duke@435 | 267 | CodeBuffer* cb, |
duke@435 | 268 | int size, |
duke@435 | 269 | int frame_complete, |
duke@435 | 270 | int frame_size, |
duke@435 | 271 | OopMapSet* oop_maps, |
duke@435 | 272 | bool caller_must_gc_arguments |
duke@435 | 273 | ); |
duke@435 | 274 | |
duke@435 | 275 | void* operator new(size_t s, unsigned size); |
duke@435 | 276 | |
duke@435 | 277 | public: |
duke@435 | 278 | // Creation |
duke@435 | 279 | static RuntimeStub* new_runtime_stub( |
duke@435 | 280 | const char* stub_name, |
duke@435 | 281 | CodeBuffer* cb, |
duke@435 | 282 | int frame_complete, |
duke@435 | 283 | int frame_size, |
duke@435 | 284 | OopMapSet* oop_maps, |
duke@435 | 285 | bool caller_must_gc_arguments |
duke@435 | 286 | ); |
duke@435 | 287 | |
duke@435 | 288 | // Typing |
duke@435 | 289 | bool is_runtime_stub() const { return true; } |
duke@435 | 290 | |
duke@435 | 291 | // GC support |
duke@435 | 292 | bool caller_must_gc_arguments(JavaThread* thread) const { return _caller_must_gc_arguments; } |
duke@435 | 293 | |
duke@435 | 294 | address entry_point() { return instructions_begin(); } |
duke@435 | 295 | |
duke@435 | 296 | // GC/Verification support |
duke@435 | 297 | void preserve_callee_argument_oops(frame fr, const RegisterMap *reg_map, OopClosure* f) { /* nothing to do */ } |
duke@435 | 298 | bool is_alive() const { return true; } |
duke@435 | 299 | void do_unloading(BoolObjectClosure* is_alive, |
duke@435 | 300 | OopClosure* keep_alive, |
duke@435 | 301 | bool unloading_occurred) { /* do nothing */ } |
duke@435 | 302 | void oops_do(OopClosure* f) { /* do-nothing*/ } |
duke@435 | 303 | |
duke@435 | 304 | void verify(); |
duke@435 | 305 | void print() const PRODUCT_RETURN; |
duke@435 | 306 | void print_value_on(outputStream* st) const PRODUCT_RETURN; |
duke@435 | 307 | }; |
duke@435 | 308 | |
duke@435 | 309 | |
duke@435 | 310 | //---------------------------------------------------------------------------------------------------- |
duke@435 | 311 | // Super-class for all blobs that exist in only one instance. Implements default behaviour. |
duke@435 | 312 | |
duke@435 | 313 | class SingletonBlob: public CodeBlob { |
duke@435 | 314 | friend class VMStructs; |
duke@435 | 315 | public: |
duke@435 | 316 | SingletonBlob( |
duke@435 | 317 | const char* name, |
duke@435 | 318 | CodeBuffer* cb, |
duke@435 | 319 | int header_size, |
duke@435 | 320 | int size, |
duke@435 | 321 | int frame_size, |
duke@435 | 322 | OopMapSet* oop_maps |
duke@435 | 323 | ) |
duke@435 | 324 | : CodeBlob(name, cb, header_size, size, CodeOffsets::frame_never_safe, frame_size, oop_maps) |
duke@435 | 325 | {}; |
duke@435 | 326 | |
duke@435 | 327 | bool is_alive() const { return true; } |
duke@435 | 328 | void do_unloading(BoolObjectClosure* is_alive, |
duke@435 | 329 | OopClosure* keep_alive, |
duke@435 | 330 | bool unloading_occurred) { /* do-nothing*/ } |
duke@435 | 331 | |
duke@435 | 332 | void verify(); // does nothing |
duke@435 | 333 | void print() const PRODUCT_RETURN; |
duke@435 | 334 | void print_value_on(outputStream* st) const PRODUCT_RETURN; |
duke@435 | 335 | }; |
duke@435 | 336 | |
duke@435 | 337 | |
duke@435 | 338 | //---------------------------------------------------------------------------------------------------- |
duke@435 | 339 | // DeoptimizationBlob |
duke@435 | 340 | |
duke@435 | 341 | class DeoptimizationBlob: public SingletonBlob { |
duke@435 | 342 | friend class VMStructs; |
duke@435 | 343 | private: |
duke@435 | 344 | int _unpack_offset; |
duke@435 | 345 | int _unpack_with_exception; |
duke@435 | 346 | int _unpack_with_reexecution; |
duke@435 | 347 | |
duke@435 | 348 | int _unpack_with_exception_in_tls; |
duke@435 | 349 | |
duke@435 | 350 | // Creation support |
duke@435 | 351 | DeoptimizationBlob( |
duke@435 | 352 | CodeBuffer* cb, |
duke@435 | 353 | int size, |
duke@435 | 354 | OopMapSet* oop_maps, |
duke@435 | 355 | int unpack_offset, |
duke@435 | 356 | int unpack_with_exception_offset, |
duke@435 | 357 | int unpack_with_reexecution_offset, |
duke@435 | 358 | int frame_size |
duke@435 | 359 | ); |
duke@435 | 360 | |
duke@435 | 361 | void* operator new(size_t s, unsigned size); |
duke@435 | 362 | |
duke@435 | 363 | public: |
duke@435 | 364 | // Creation |
duke@435 | 365 | static DeoptimizationBlob* create( |
duke@435 | 366 | CodeBuffer* cb, |
duke@435 | 367 | OopMapSet* oop_maps, |
duke@435 | 368 | int unpack_offset, |
duke@435 | 369 | int unpack_with_exception_offset, |
duke@435 | 370 | int unpack_with_reexecution_offset, |
duke@435 | 371 | int frame_size |
duke@435 | 372 | ); |
duke@435 | 373 | |
duke@435 | 374 | // Typing |
duke@435 | 375 | bool is_deoptimization_stub() const { return true; } |
duke@435 | 376 | const DeoptimizationBlob *as_deoptimization_stub() const { return this; } |
duke@435 | 377 | bool exception_address_is_unpack_entry(address pc) const { |
duke@435 | 378 | address unpack_pc = unpack(); |
duke@435 | 379 | return (pc == unpack_pc || (pc + frame::pc_return_offset) == unpack_pc); |
duke@435 | 380 | } |
duke@435 | 381 | |
duke@435 | 382 | |
duke@435 | 383 | |
duke@435 | 384 | |
duke@435 | 385 | // GC for args |
duke@435 | 386 | void preserve_callee_argument_oops(frame fr, const RegisterMap *reg_map, OopClosure* f) { /* Nothing to do */ } |
duke@435 | 387 | |
duke@435 | 388 | // Iteration |
duke@435 | 389 | void oops_do(OopClosure* f) {} |
duke@435 | 390 | |
duke@435 | 391 | // Printing |
duke@435 | 392 | void print_value_on(outputStream* st) const PRODUCT_RETURN; |
duke@435 | 393 | |
duke@435 | 394 | address unpack() const { return instructions_begin() + _unpack_offset; } |
duke@435 | 395 | address unpack_with_exception() const { return instructions_begin() + _unpack_with_exception; } |
duke@435 | 396 | address unpack_with_reexecution() const { return instructions_begin() + _unpack_with_reexecution; } |
duke@435 | 397 | |
duke@435 | 398 | // Alternate entry point for C1 where the exception and issuing pc |
duke@435 | 399 | // are in JavaThread::_exception_oop and JavaThread::_exception_pc |
duke@435 | 400 | // instead of being in registers. This is needed because C1 doesn't |
duke@435 | 401 | // model exception paths in a way that keeps these registers free so |
duke@435 | 402 | // there may be live values in those registers during deopt. |
duke@435 | 403 | void set_unpack_with_exception_in_tls_offset(int offset) { |
duke@435 | 404 | _unpack_with_exception_in_tls = offset; |
duke@435 | 405 | assert(contains(instructions_begin() + _unpack_with_exception_in_tls), "must be PC inside codeblob"); |
duke@435 | 406 | } |
duke@435 | 407 | address unpack_with_exception_in_tls() const { return instructions_begin() + _unpack_with_exception_in_tls; } |
duke@435 | 408 | }; |
duke@435 | 409 | |
duke@435 | 410 | |
duke@435 | 411 | //---------------------------------------------------------------------------------------------------- |
duke@435 | 412 | // UncommonTrapBlob (currently only used by Compiler 2) |
duke@435 | 413 | |
duke@435 | 414 | #ifdef COMPILER2 |
duke@435 | 415 | |
duke@435 | 416 | class UncommonTrapBlob: public SingletonBlob { |
duke@435 | 417 | friend class VMStructs; |
duke@435 | 418 | private: |
duke@435 | 419 | // Creation support |
duke@435 | 420 | UncommonTrapBlob( |
duke@435 | 421 | CodeBuffer* cb, |
duke@435 | 422 | int size, |
duke@435 | 423 | OopMapSet* oop_maps, |
duke@435 | 424 | int frame_size |
duke@435 | 425 | ); |
duke@435 | 426 | |
duke@435 | 427 | void* operator new(size_t s, unsigned size); |
duke@435 | 428 | |
duke@435 | 429 | public: |
duke@435 | 430 | // Creation |
duke@435 | 431 | static UncommonTrapBlob* create( |
duke@435 | 432 | CodeBuffer* cb, |
duke@435 | 433 | OopMapSet* oop_maps, |
duke@435 | 434 | int frame_size |
duke@435 | 435 | ); |
duke@435 | 436 | |
duke@435 | 437 | // GC for args |
duke@435 | 438 | void preserve_callee_argument_oops(frame fr, const RegisterMap *reg_map, OopClosure* f) { /* nothing to do */ } |
duke@435 | 439 | |
duke@435 | 440 | // Typing |
duke@435 | 441 | bool is_uncommon_trap_stub() const { return true; } |
duke@435 | 442 | |
duke@435 | 443 | // Iteration |
duke@435 | 444 | void oops_do(OopClosure* f) {} |
duke@435 | 445 | }; |
duke@435 | 446 | |
duke@435 | 447 | |
duke@435 | 448 | //---------------------------------------------------------------------------------------------------- |
duke@435 | 449 | // ExceptionBlob: used for exception unwinding in compiled code (currently only used by Compiler 2) |
duke@435 | 450 | |
duke@435 | 451 | class ExceptionBlob: public SingletonBlob { |
duke@435 | 452 | friend class VMStructs; |
duke@435 | 453 | private: |
duke@435 | 454 | // Creation support |
duke@435 | 455 | ExceptionBlob( |
duke@435 | 456 | CodeBuffer* cb, |
duke@435 | 457 | int size, |
duke@435 | 458 | OopMapSet* oop_maps, |
duke@435 | 459 | int frame_size |
duke@435 | 460 | ); |
duke@435 | 461 | |
duke@435 | 462 | void* operator new(size_t s, unsigned size); |
duke@435 | 463 | |
duke@435 | 464 | public: |
duke@435 | 465 | // Creation |
duke@435 | 466 | static ExceptionBlob* create( |
duke@435 | 467 | CodeBuffer* cb, |
duke@435 | 468 | OopMapSet* oop_maps, |
duke@435 | 469 | int frame_size |
duke@435 | 470 | ); |
duke@435 | 471 | |
duke@435 | 472 | // GC for args |
duke@435 | 473 | void preserve_callee_argument_oops(frame fr, const RegisterMap* reg_map, OopClosure* f) { /* nothing to do */ } |
duke@435 | 474 | |
duke@435 | 475 | // Typing |
duke@435 | 476 | bool is_exception_stub() const { return true; } |
duke@435 | 477 | |
duke@435 | 478 | // Iteration |
duke@435 | 479 | void oops_do(OopClosure* f) {} |
duke@435 | 480 | }; |
duke@435 | 481 | #endif // COMPILER2 |
duke@435 | 482 | |
duke@435 | 483 | |
duke@435 | 484 | //---------------------------------------------------------------------------------------------------- |
duke@435 | 485 | // SafepointBlob: handles illegal_instruction exceptions during a safepoint |
duke@435 | 486 | |
duke@435 | 487 | class SafepointBlob: public SingletonBlob { |
duke@435 | 488 | friend class VMStructs; |
duke@435 | 489 | private: |
duke@435 | 490 | // Creation support |
duke@435 | 491 | SafepointBlob( |
duke@435 | 492 | CodeBuffer* cb, |
duke@435 | 493 | int size, |
duke@435 | 494 | OopMapSet* oop_maps, |
duke@435 | 495 | int frame_size |
duke@435 | 496 | ); |
duke@435 | 497 | |
duke@435 | 498 | void* operator new(size_t s, unsigned size); |
duke@435 | 499 | |
duke@435 | 500 | public: |
duke@435 | 501 | // Creation |
duke@435 | 502 | static SafepointBlob* create( |
duke@435 | 503 | CodeBuffer* cb, |
duke@435 | 504 | OopMapSet* oop_maps, |
duke@435 | 505 | int frame_size |
duke@435 | 506 | ); |
duke@435 | 507 | |
duke@435 | 508 | // GC for args |
duke@435 | 509 | void preserve_callee_argument_oops(frame fr, const RegisterMap* reg_map, OopClosure* f) { /* nothing to do */ } |
duke@435 | 510 | |
duke@435 | 511 | // Typing |
duke@435 | 512 | bool is_safepoint_stub() const { return true; } |
duke@435 | 513 | |
duke@435 | 514 | // Iteration |
duke@435 | 515 | void oops_do(OopClosure* f) {} |
duke@435 | 516 | }; |