1 /* 2 * Copyright (c) 1997, 2014, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 * 23 */ 24 25 #ifndef SHARE_VM_ASM_CODEBUFFER_HPP 26 #define SHARE_VM_ASM_CODEBUFFER_HPP 27 28 #include "code/oopRecorder.hpp" 29 #include "code/relocInfo.hpp" 30 #include "utilities/debug.hpp" 31 32 class CodeStrings; 33 class PhaseCFG; 34 class Compile; 35 class BufferBlob; 36 class CodeBuffer; 37 class Label; 38 39 class CodeOffsets: public StackObj { 40 public: 41 enum Entries { Entry, 42 Verified_Entry, 43 Frame_Complete, // Offset in the code where the frame setup is (for forte stackwalks) is complete 44 OSR_Entry, 45 Exceptions, // Offset where exception handler lives 46 Deopt, // Offset where deopt handler lives 47 DeoptMH, // Offset where MethodHandle deopt handler lives 48 UnwindHandler, // Offset to default unwind handler 49 max_Entries }; 50 51 // special value to note codeBlobs where profile (forte) stack walking is 52 // always dangerous and suspect. 53 54 enum { frame_never_safe = -1 }; 55 56 private: 57 int _values[max_Entries]; 58 59 public: 60 CodeOffsets() { 61 _values[Entry ] = 0; 62 _values[Verified_Entry] = 0; 63 _values[Frame_Complete] = frame_never_safe; 64 _values[OSR_Entry ] = 0; 65 _values[Exceptions ] = -1; 66 _values[Deopt ] = -1; 67 _values[DeoptMH ] = -1; 68 _values[UnwindHandler ] = -1; 69 } 70 71 int value(Entries e) { return _values[e]; } 72 void set_value(Entries e, int val) { _values[e] = val; } 73 }; 74 75 // This class represents a stream of code and associated relocations. 76 // There are a few in each CodeBuffer. 77 // They are filled concurrently, and concatenated at the end. 78 class CodeSection VALUE_OBJ_CLASS_SPEC { 79 friend class CodeBuffer; 80 public: 81 typedef int csize_t; // code size type; would be size_t except for history 82 83 private: 84 address _start; // first byte of contents (instructions) 85 address _mark; // user mark, usually an instruction beginning 86 address _end; // current end address 87 address _limit; // last possible (allocated) end address 88 relocInfo* _locs_start; // first byte of relocation information 89 relocInfo* _locs_end; // first byte after relocation information 90 relocInfo* _locs_limit; // first byte after relocation information buf 91 address _locs_point; // last relocated position (grows upward) 92 bool _locs_own; // did I allocate the locs myself? 93 bool _frozen; // no more expansion of this section 94 char _index; // my section number (SECT_INST, etc.) 95 CodeBuffer* _outer; // enclosing CodeBuffer 96 97 // (Note: _locs_point used to be called _last_reloc_offset.) 98 99 CodeSection() { 100 _start = NULL; 101 _mark = NULL; 102 _end = NULL; 103 _limit = NULL; 104 _locs_start = NULL; 105 _locs_end = NULL; 106 _locs_limit = NULL; 107 _locs_point = NULL; 108 _locs_own = false; 109 _frozen = false; 110 debug_only(_index = (char)-1); 111 debug_only(_outer = (CodeBuffer*)badAddress); 112 } 113 114 void initialize_outer(CodeBuffer* outer, int index) { 115 _outer = outer; 116 _index = index; 117 } 118 119 void initialize(address start, csize_t size = 0) { 120 assert(_start == NULL, "only one init step, please"); 121 _start = start; 122 _mark = NULL; 123 _end = start; 124 125 _limit = start + size; 126 _locs_point = start; 127 } 128 129 void initialize_locs(int locs_capacity); 130 void expand_locs(int new_capacity); 131 void initialize_locs_from(const CodeSection* source_cs); 132 133 // helper for CodeBuffer::expand() 134 void take_over_code_from(CodeSection* cs) { 135 _start = cs->_start; 136 _mark = cs->_mark; 137 _end = cs->_end; 138 _limit = cs->_limit; 139 _locs_point = cs->_locs_point; 140 } 141 142 public: 143 address start() const { return _start; } 144 address mark() const { return _mark; } 145 address end() const { return _end; } 146 address limit() const { return _limit; } 147 csize_t size() const { return (csize_t)(_end - _start); } 148 csize_t mark_off() const { assert(_mark != NULL, "not an offset"); 149 return (csize_t)(_mark - _start); } 150 csize_t capacity() const { return (csize_t)(_limit - _start); } 151 csize_t remaining() const { return (csize_t)(_limit - _end); } 152 153 relocInfo* locs_start() const { return _locs_start; } 154 relocInfo* locs_end() const { return _locs_end; } 155 int locs_count() const { return (int)(_locs_end - _locs_start); } 156 relocInfo* locs_limit() const { return _locs_limit; } 157 address locs_point() const { return _locs_point; } 158 csize_t locs_point_off() const{ return (csize_t)(_locs_point - _start); } 159 csize_t locs_capacity() const { return (csize_t)(_locs_limit - _locs_start); } 160 csize_t locs_remaining()const { return (csize_t)(_locs_limit - _locs_end); } 161 162 int index() const { return _index; } 163 bool is_allocated() const { return _start != NULL; } 164 bool is_empty() const { return _start == _end; } 165 bool is_frozen() const { return _frozen; } 166 bool has_locs() const { return _locs_end != NULL; } 167 168 CodeBuffer* outer() const { return _outer; } 169 170 // is a given address in this section? (2nd version is end-inclusive) 171 bool contains(address pc) const { return pc >= _start && pc < _end; } 172 bool contains2(address pc) const { return pc >= _start && pc <= _end; } 173 bool allocates(address pc) const { return pc >= _start && pc < _limit; } 174 bool allocates2(address pc) const { return pc >= _start && pc <= _limit; } 175 176 void set_end(address pc) { assert(allocates2(pc), err_msg("not in CodeBuffer memory: " INTPTR_FORMAT " <= " INTPTR_FORMAT " <= " INTPTR_FORMAT, p2i(_start), p2i(pc), p2i(_limit))); _end = pc; } 177 void set_mark(address pc) { assert(contains2(pc), "not in codeBuffer"); 178 _mark = pc; } 179 void set_mark_off(int offset) { assert(contains2(offset+_start),"not in codeBuffer"); 180 _mark = offset + _start; } 181 void set_mark() { _mark = _end; } 182 void clear_mark() { _mark = NULL; } 183 184 void set_locs_end(relocInfo* p) { 185 assert(p <= locs_limit(), "locs data fits in allocated buffer"); 186 _locs_end = p; 187 } 188 void set_locs_point(address pc) { 189 assert(pc >= locs_point(), "relocation addr may not decrease"); 190 assert(allocates2(pc), "relocation addr must be in this section"); 191 _locs_point = pc; 192 } 193 194 // Code emission 195 void emit_int8 ( int8_t x) { *((int8_t*) end()) = x; set_end(end() + sizeof(int8_t)); } 196 void emit_int16( int16_t x) { *((int16_t*) end()) = x; set_end(end() + sizeof(int16_t)); } 197 void emit_int32( int32_t x) { *((int32_t*) end()) = x; set_end(end() + sizeof(int32_t)); } 198 void emit_int64( int64_t x) { *((int64_t*) end()) = x; set_end(end() + sizeof(int64_t)); } 199 200 void emit_float( jfloat x) { *((jfloat*) end()) = x; set_end(end() + sizeof(jfloat)); } 201 void emit_double(jdouble x) { *((jdouble*) end()) = x; set_end(end() + sizeof(jdouble)); } 202 void emit_address(address x) { *((address*) end()) = x; set_end(end() + sizeof(address)); } 203 204 // Share a scratch buffer for relocinfo. (Hacky; saves a resource allocation.) 205 void initialize_shared_locs(relocInfo* buf, int length); 206 207 // Manage labels and their addresses. 208 address target(Label& L, address branch_pc); 209 210 // Emit a relocation. 211 void relocate(address at, RelocationHolder const& rspec, int format = 0); 212 void relocate(address at, relocInfo::relocType rtype, int format = 0) { 213 if (rtype != relocInfo::none) 214 relocate(at, Relocation::spec_simple(rtype), format); 215 } 216 217 // alignment requirement for starting offset 218 // Requirements are that the instruction area and the 219 // stubs area must start on CodeEntryAlignment, and 220 // the ctable on sizeof(jdouble) 221 int alignment() const { return MAX2((int)sizeof(jdouble), (int)CodeEntryAlignment); } 222 223 // Slop between sections, used only when allocating temporary BufferBlob buffers. 224 static csize_t end_slop() { return MAX2((int)sizeof(jdouble), (int)CodeEntryAlignment); } 225 226 csize_t align_at_start(csize_t off) const { return (csize_t) align_size_up(off, alignment()); } 227 228 // Mark a section frozen. Assign its remaining space to 229 // the following section. It will never expand after this point. 230 inline void freeze(); // { _outer->freeze_section(this); } 231 232 // Ensure there's enough space left in the current section. 233 // Return true if there was an expansion. 234 bool maybe_expand_to_ensure_remaining(csize_t amount); 235 236 #ifndef PRODUCT 237 void decode(); 238 void dump(); 239 void print(const char* name); 240 #endif //PRODUCT 241 }; 242 243 class CodeString; 244 class CodeStrings VALUE_OBJ_CLASS_SPEC { 245 private: 246 #ifndef PRODUCT 247 CodeString* _strings; 248 #ifdef ASSERT 249 // Becomes true after copy-out, forbids further use. 250 bool _defunct; // Zero bit pattern is "valid", see memset call in decode_env::decode_env 251 #endif 252 #endif 253 254 CodeString* find(intptr_t offset) const; 255 CodeString* find_last(intptr_t offset) const; 256 257 void set_null_and_invalidate() { 258 #ifndef PRODUCT 259 _strings = NULL; 260 #ifdef ASSERT 261 _defunct = true; 262 #endif 263 #endif 264 } 265 266 public: 267 CodeStrings() { 268 #ifndef PRODUCT 269 _strings = NULL; 270 #ifdef ASSERT 271 _defunct = false; 272 #endif 273 #endif 274 } 275 276 bool is_null() { 277 #ifdef ASSERT 278 return _strings == NULL; 279 #else 280 return true; 281 #endif 282 } 283 284 const char* add_string(const char * string) PRODUCT_RETURN_(return NULL;); 285 286 void add_comment(intptr_t offset, const char * comment) PRODUCT_RETURN; 287 void print_block_comment(outputStream* stream, intptr_t offset) const PRODUCT_RETURN; 288 // MOVE strings from other to this; invalidate other. 289 void assign(CodeStrings& other) PRODUCT_RETURN; 290 // COPY strings from other to this; leave other valid. 291 void copy(CodeStrings& other) PRODUCT_RETURN; 292 void free() PRODUCT_RETURN; 293 // Guarantee that _strings are used at most once; assign invalidates a buffer. 294 inline void check_valid() const { 295 #ifdef ASSERT 296 assert(!_defunct, "Use of invalid CodeStrings"); 297 #endif 298 } 299 }; 300 301 // A CodeBuffer describes a memory space into which assembly 302 // code is generated. This memory space usually occupies the 303 // interior of a single BufferBlob, but in some cases it may be 304 // an arbitrary span of memory, even outside the code cache. 305 // 306 // A code buffer comes in two variants: 307 // 308 // (1) A CodeBuffer referring to an already allocated piece of memory: 309 // This is used to direct 'static' code generation (e.g. for interpreter 310 // or stubroutine generation, etc.). This code comes with NO relocation 311 // information. 312 // 313 // (2) A CodeBuffer referring to a piece of memory allocated when the 314 // CodeBuffer is allocated. This is used for nmethod generation. 315 // 316 // The memory can be divided up into several parts called sections. 317 // Each section independently accumulates code (or data) an relocations. 318 // Sections can grow (at the expense of a reallocation of the BufferBlob 319 // and recopying of all active sections). When the buffered code is finally 320 // written to an nmethod (or other CodeBlob), the contents (code, data, 321 // and relocations) of the sections are padded to an alignment and concatenated. 322 // Instructions and data in one section can contain relocatable references to 323 // addresses in a sibling section. 324 325 class CodeBuffer: public StackObj { 326 friend class CodeSection; 327 328 private: 329 // CodeBuffers must be allocated on the stack except for a single 330 // special case during expansion which is handled internally. This 331 // is done to guarantee proper cleanup of resources. 332 void* operator new(size_t size) throw() { return ResourceObj::operator new(size); } 333 void operator delete(void* p) { ShouldNotCallThis(); } 334 335 public: 336 typedef int csize_t; // code size type; would be size_t except for history 337 enum { 338 // Here is the list of all possible sections. The order reflects 339 // the final layout. 340 SECT_FIRST = 0, 341 SECT_CONSTS = SECT_FIRST, // Non-instruction data: Floats, jump tables, etc. 342 SECT_INSTS, // Executable instructions. 343 SECT_STUBS, // Outbound trampolines for supporting call sites. 344 SECT_LIMIT, SECT_NONE = -1 345 }; 346 347 private: 348 enum { 349 sect_bits = 2, // assert (SECT_LIMIT <= (1<<sect_bits)) 350 sect_mask = (1<<sect_bits)-1 351 }; 352 353 const char* _name; 354 355 CodeSection _consts; // constants, jump tables 356 CodeSection _insts; // instructions (the main section) 357 CodeSection _stubs; // stubs (call site support), deopt, exception handling 358 359 CodeBuffer* _before_expand; // dead buffer, from before the last expansion 360 361 BufferBlob* _blob; // optional buffer in CodeCache for generated code 362 address _total_start; // first address of combined memory buffer 363 csize_t _total_size; // size in bytes of combined memory buffer 364 365 OopRecorder* _oop_recorder; 366 CodeStrings _code_strings; 367 OopRecorder _default_oop_recorder; // override with initialize_oop_recorder 368 Arena* _overflow_arena; 369 370 address _decode_begin; // start address for decode 371 address decode_begin(); 372 373 void initialize_misc(const char * name) { 374 // all pointers other than code_start/end and those inside the sections 375 assert(name != NULL, "must have a name"); 376 _name = name; 377 _before_expand = NULL; 378 _blob = NULL; 379 _oop_recorder = NULL; 380 _decode_begin = NULL; 381 _overflow_arena = NULL; 382 } 383 384 void initialize(address code_start, csize_t code_size) { 385 _consts.initialize_outer(this, SECT_CONSTS); 386 _insts.initialize_outer(this, SECT_INSTS); 387 _stubs.initialize_outer(this, SECT_STUBS); 388 _total_start = code_start; 389 _total_size = code_size; 390 // Initialize the main section: 391 _insts.initialize(code_start, code_size); 392 assert(!_stubs.is_allocated(), "no garbage here"); 393 assert(!_consts.is_allocated(), "no garbage here"); 394 _oop_recorder = &_default_oop_recorder; 395 } 396 397 void initialize_section_size(CodeSection* cs, csize_t size); 398 399 void freeze_section(CodeSection* cs); 400 401 // helper for CodeBuffer::expand() 402 void take_over_code_from(CodeBuffer* cs); 403 404 // ensure sections are disjoint, ordered, and contained in the blob 405 void verify_section_allocation(); 406 407 // copies combined relocations to the blob, returns bytes copied 408 // (if target is null, it is a dry run only, just for sizing) 409 csize_t copy_relocations_to(CodeBlob* blob) const; 410 411 // copies combined code to the blob (assumes relocs are already in there) 412 void copy_code_to(CodeBlob* blob); 413 414 // moves code sections to new buffer (assumes relocs are already in there) 415 void relocate_code_to(CodeBuffer* cb) const; 416 417 // set up a model of the final layout of my contents 418 void compute_final_layout(CodeBuffer* dest) const; 419 420 // Expand the given section so at least 'amount' is remaining. 421 // Creates a new, larger BufferBlob, and rewrites the code & relocs. 422 void expand(CodeSection* which_cs, csize_t amount); 423 424 // Helper for expand. 425 csize_t figure_expanded_capacities(CodeSection* which_cs, csize_t amount, csize_t* new_capacity); 426 427 public: 428 // (1) code buffer referring to pre-allocated instruction memory 429 CodeBuffer(address code_start, csize_t code_size) { 430 assert(code_start != NULL, "sanity"); 431 initialize_misc("static buffer"); 432 initialize(code_start, code_size); 433 verify_section_allocation(); 434 } 435 436 // (2) CodeBuffer referring to pre-allocated CodeBlob. 437 CodeBuffer(CodeBlob* blob); 438 439 // (3) code buffer allocating codeBlob memory for code & relocation 440 // info but with lazy initialization. The name must be something 441 // informative. 442 CodeBuffer(const char* name) { 443 initialize_misc(name); 444 } 445 446 447 // (4) code buffer allocating codeBlob memory for code & relocation 448 // info. The name must be something informative and code_size must 449 // include both code and stubs sizes. 450 CodeBuffer(const char* name, csize_t code_size, csize_t locs_size) { 451 initialize_misc(name); 452 initialize(code_size, locs_size); 453 } 454 455 ~CodeBuffer(); 456 457 // Initialize a CodeBuffer constructed using constructor 3. Using 458 // constructor 4 is equivalent to calling constructor 3 and then 459 // calling this method. It's been factored out for convenience of 460 // construction. 461 void initialize(csize_t code_size, csize_t locs_size); 462 463 CodeSection* consts() { return &_consts; } 464 CodeSection* insts() { return &_insts; } 465 CodeSection* stubs() { return &_stubs; } 466 467 // present sections in order; return NULL at end; consts is #0, etc. 468 CodeSection* code_section(int n) { 469 // This makes the slightly questionable but portable assumption 470 // that the various members (_consts, _insts, _stubs, etc.) are 471 // adjacent in the layout of CodeBuffer. 472 CodeSection* cs = &_consts + n; 473 assert(cs->index() == n || !cs->is_allocated(), "sanity"); 474 return cs; 475 } 476 const CodeSection* code_section(int n) const { // yucky const stuff 477 return ((CodeBuffer*)this)->code_section(n); 478 } 479 static const char* code_section_name(int n); 480 int section_index_of(address addr) const; 481 bool contains(address addr) const { 482 // handy for debugging 483 return section_index_of(addr) > SECT_NONE; 484 } 485 486 // A stable mapping between 'locators' (small ints) and addresses. 487 static int locator_pos(int locator) { return locator >> sect_bits; } 488 static int locator_sect(int locator) { return locator & sect_mask; } 489 static int locator(int pos, int sect) { return (pos << sect_bits) | sect; } 490 int locator(address addr) const; 491 address locator_address(int locator) const; 492 493 // Heuristic for pre-packing the taken/not-taken bit of a predicted branch. 494 bool is_backward_branch(Label& L); 495 496 // Properties 497 const char* name() const { return _name; } 498 CodeBuffer* before_expand() const { return _before_expand; } 499 BufferBlob* blob() const { return _blob; } 500 void set_blob(BufferBlob* blob); 501 void free_blob(); // Free the blob, if we own one. 502 503 // Properties relative to the insts section: 504 address insts_begin() const { return _insts.start(); } 505 address insts_end() const { return _insts.end(); } 506 void set_insts_end(address end) { _insts.set_end(end); } 507 address insts_limit() const { return _insts.limit(); } 508 address insts_mark() const { return _insts.mark(); } 509 void set_insts_mark() { _insts.set_mark(); } 510 void clear_insts_mark() { _insts.clear_mark(); } 511 512 // is there anything in the buffer other than the current section? 513 bool is_pure() const { return insts_size() == total_content_size(); } 514 515 // size in bytes of output so far in the insts sections 516 csize_t insts_size() const { return _insts.size(); } 517 518 // same as insts_size(), except that it asserts there is no non-code here 519 csize_t pure_insts_size() const { assert(is_pure(), "no non-code"); 520 return insts_size(); } 521 // capacity in bytes of the insts sections 522 csize_t insts_capacity() const { return _insts.capacity(); } 523 524 // number of bytes remaining in the insts section 525 csize_t insts_remaining() const { return _insts.remaining(); } 526 527 // is a given address in the insts section? (2nd version is end-inclusive) 528 bool insts_contains(address pc) const { return _insts.contains(pc); } 529 bool insts_contains2(address pc) const { return _insts.contains2(pc); } 530 531 // Record any extra oops required to keep embedded metadata alive 532 void finalize_oop_references(methodHandle method); 533 534 // Allocated size in all sections, when aligned and concatenated 535 // (this is the eventual state of the content in its final 536 // CodeBlob). 537 csize_t total_content_size() const; 538 539 // Combined offset (relative to start of first section) of given 540 // section, as eventually found in the final CodeBlob. 541 csize_t total_offset_of(CodeSection* cs) const; 542 543 // allocated size of all relocation data, including index, rounded up 544 csize_t total_relocation_size() const; 545 546 // allocated size of any and all recorded oops 547 csize_t total_oop_size() const { 548 OopRecorder* recorder = oop_recorder(); 549 return (recorder == NULL)? 0: recorder->oop_size(); 550 } 551 552 // allocated size of any and all recorded metadata 553 csize_t total_metadata_size() const { 554 OopRecorder* recorder = oop_recorder(); 555 return (recorder == NULL)? 0: recorder->metadata_size(); 556 } 557 558 // Configuration functions, called immediately after the CB is constructed. 559 // The section sizes are subtracted from the original insts section. 560 // Note: Call them in reverse section order, because each steals from insts. 561 void initialize_consts_size(csize_t size) { initialize_section_size(&_consts, size); } 562 void initialize_stubs_size(csize_t size) { initialize_section_size(&_stubs, size); } 563 // Override default oop recorder. 564 void initialize_oop_recorder(OopRecorder* r); 565 566 OopRecorder* oop_recorder() const { return _oop_recorder; } 567 CodeStrings& strings() { return _code_strings; } 568 569 void free_strings() { 570 if (!_code_strings.is_null()) { 571 _code_strings.free(); // sets _strings Null as a side-effect. 572 } 573 } 574 575 // Code generation 576 void relocate(address at, RelocationHolder const& rspec, int format = 0) { 577 _insts.relocate(at, rspec, format); 578 } 579 void relocate(address at, relocInfo::relocType rtype, int format = 0) { 580 _insts.relocate(at, rtype, format); 581 } 582 583 // Management of overflow storage for binding of Labels. 584 GrowableArray<int>* create_patch_overflow(); 585 586 // NMethod generation 587 void copy_code_and_locs_to(CodeBlob* blob) { 588 assert(blob != NULL, "sane"); 589 copy_relocations_to(blob); 590 copy_code_to(blob); 591 } 592 void copy_values_to(nmethod* nm) { 593 if (!oop_recorder()->is_unused()) { 594 oop_recorder()->copy_values_to(nm); 595 } 596 } 597 598 // Transform an address from the code in this code buffer to a specified code buffer 599 address transform_address(const CodeBuffer &cb, address addr) const; 600 601 void block_comment(intptr_t offset, const char * comment) PRODUCT_RETURN; 602 const char* code_string(const char* str) PRODUCT_RETURN_(return NULL;); 603 604 // Log a little info about section usage in the CodeBuffer 605 void log_section_sizes(const char* name); 606 607 #ifndef PRODUCT 608 public: 609 // Printing / Decoding 610 // decodes from decode_begin() to code_end() and sets decode_begin to end 611 void decode(); 612 void decode_all(); // decodes all the code 613 void skip_decode(); // sets decode_begin to code_end(); 614 void print(); 615 #endif 616 617 618 // The following header contains architecture-specific implementations 619 #ifdef TARGET_ARCH_x86 620 # include "codeBuffer_x86.hpp" 621 #endif 622 #ifdef TARGET_ARCH_sparc 623 # include "codeBuffer_sparc.hpp" 624 #endif 625 #ifdef TARGET_ARCH_zero 626 # include "codeBuffer_zero.hpp" 627 #endif 628 #ifdef TARGET_ARCH_arm 629 # include "codeBuffer_arm.hpp" 630 #endif 631 #ifdef TARGET_ARCH_ppc 632 # include "codeBuffer_ppc.hpp" 633 #endif 634 #ifdef TARGET_ARCH_aarch64 635 # include "codeBuffer_aarch64.hpp" 636 #endif 637 638 }; 639 640 641 inline void CodeSection::freeze() { 642 _outer->freeze_section(this); 643 } 644 645 inline bool CodeSection::maybe_expand_to_ensure_remaining(csize_t amount) { 646 if (remaining() < amount) { _outer->expand(this, amount); return true; } 647 return false; 648 } 649 650 #endif // SHARE_VM_ASM_CODEBUFFER_HPP