Mercurial > hg > graal-compiler
annotate src/share/vm/asm/codeBuffer.hpp @ 6038:8bafad97cd26
7158552: The instanceKlsss::_host_klass is only needed for anonymous class for JSR 292 support.
Summary: Change the _host_klass to be conditionally created embedded instanceKlass field.
Reviewed-by: jrose, coleenp, dholmes
author | jiangli |
---|---|
date | Wed, 02 May 2012 13:21:36 -0400 |
parents | 44ce519bc3d1 |
children | da91efe96a93 |
rev | line source |
---|---|
0 | 1 /* |
2426
1d1603768966
7010070: Update all 2010 Oracle-changed OpenJDK files to have the proper copyright dates - second pass
trims
parents:
2192
diff
changeset
|
2 * Copyright (c) 1997, 2011, 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 * | |
1552
c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
trims
parents:
1378
diff
changeset
|
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
trims
parents:
1378
diff
changeset
|
20 * or visit www.oracle.com if you need additional information or have any |
c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
trims
parents:
1378
diff
changeset
|
21 * questions. |
0 | 22 * |
23 */ | |
24 | |
1972 | 25 #ifndef SHARE_VM_ASM_CODEBUFFER_HPP |
26 #define SHARE_VM_ASM_CODEBUFFER_HPP | |
27 | |
28 #include "asm/assembler.hpp" | |
29 #include "code/oopRecorder.hpp" | |
30 #include "code/relocInfo.hpp" | |
31 | |
0 | 32 class CodeComments; |
33 class AbstractAssembler; | |
34 class MacroAssembler; | |
35 class PhaseCFG; | |
36 class Compile; | |
37 class BufferBlob; | |
38 class CodeBuffer; | |
39 | |
40 class CodeOffsets: public StackObj { | |
41 public: | |
42 enum Entries { Entry, | |
43 Verified_Entry, | |
44 Frame_Complete, // Offset in the code where the frame setup is (for forte stackwalks) is complete | |
45 OSR_Entry, | |
116
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
46 Dtrace_trap = OSR_Entry, // dtrace probes can never have an OSR entry so reuse it |
0 | 47 Exceptions, // Offset where exception handler lives |
48 Deopt, // Offset where deopt handler lives | |
1204 | 49 DeoptMH, // Offset where MethodHandle deopt handler lives |
1378
9f5b60a14736
6939930: exception unwind changes in 6919934 hurts compilation speed
never
parents:
1204
diff
changeset
|
50 UnwindHandler, // Offset to default unwind handler |
0 | 51 max_Entries }; |
52 | |
53 // special value to note codeBlobs where profile (forte) stack walking is | |
54 // always dangerous and suspect. | |
55 | |
56 enum { frame_never_safe = -1 }; | |
57 | |
58 private: | |
59 int _values[max_Entries]; | |
60 | |
61 public: | |
62 CodeOffsets() { | |
1204 | 63 _values[Entry ] = 0; |
0 | 64 _values[Verified_Entry] = 0; |
65 _values[Frame_Complete] = frame_never_safe; | |
1204 | 66 _values[OSR_Entry ] = 0; |
67 _values[Exceptions ] = -1; | |
68 _values[Deopt ] = -1; | |
69 _values[DeoptMH ] = -1; | |
1378
9f5b60a14736
6939930: exception unwind changes in 6919934 hurts compilation speed
never
parents:
1204
diff
changeset
|
70 _values[UnwindHandler ] = -1; |
0 | 71 } |
72 | |
73 int value(Entries e) { return _values[e]; } | |
74 void set_value(Entries e, int val) { _values[e] = val; } | |
75 }; | |
76 | |
77 // This class represents a stream of code and associated relocations. | |
78 // There are a few in each CodeBuffer. | |
79 // They are filled concurrently, and concatenated at the end. | |
80 class CodeSection VALUE_OBJ_CLASS_SPEC { | |
81 friend class CodeBuffer; | |
82 public: | |
83 typedef int csize_t; // code size type; would be size_t except for history | |
84 | |
85 private: | |
86 address _start; // first byte of contents (instructions) | |
87 address _mark; // user mark, usually an instruction beginning | |
88 address _end; // current end address | |
89 address _limit; // last possible (allocated) end address | |
90 relocInfo* _locs_start; // first byte of relocation information | |
91 relocInfo* _locs_end; // first byte after relocation information | |
92 relocInfo* _locs_limit; // first byte after relocation information buf | |
93 address _locs_point; // last relocated position (grows upward) | |
94 bool _locs_own; // did I allocate the locs myself? | |
95 bool _frozen; // no more expansion of this section | |
96 char _index; // my section number (SECT_INST, etc.) | |
97 CodeBuffer* _outer; // enclosing CodeBuffer | |
98 | |
99 // (Note: _locs_point used to be called _last_reloc_offset.) | |
100 | |
101 CodeSection() { | |
102 _start = NULL; | |
103 _mark = NULL; | |
104 _end = NULL; | |
105 _limit = NULL; | |
106 _locs_start = NULL; | |
107 _locs_end = NULL; | |
108 _locs_limit = NULL; | |
109 _locs_point = NULL; | |
110 _locs_own = false; | |
111 _frozen = false; | |
1681
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1579
diff
changeset
|
112 debug_only(_index = (char)-1); |
0 | 113 debug_only(_outer = (CodeBuffer*)badAddress); |
114 } | |
115 | |
116 void initialize_outer(CodeBuffer* outer, int index) { | |
117 _outer = outer; | |
118 _index = index; | |
119 } | |
120 | |
121 void initialize(address start, csize_t size = 0) { | |
122 assert(_start == NULL, "only one init step, please"); | |
123 _start = start; | |
124 _mark = NULL; | |
125 _end = start; | |
126 | |
127 _limit = start + size; | |
128 _locs_point = start; | |
129 } | |
130 | |
131 void initialize_locs(int locs_capacity); | |
132 void expand_locs(int new_capacity); | |
133 void initialize_locs_from(const CodeSection* source_cs); | |
134 | |
135 // helper for CodeBuffer::expand() | |
136 void take_over_code_from(CodeSection* cs) { | |
137 _start = cs->_start; | |
138 _mark = cs->_mark; | |
139 _end = cs->_end; | |
140 _limit = cs->_limit; | |
141 _locs_point = cs->_locs_point; | |
142 } | |
143 | |
144 public: | |
145 address start() const { return _start; } | |
146 address mark() const { return _mark; } | |
147 address end() const { return _end; } | |
148 address limit() const { return _limit; } | |
149 csize_t size() const { return (csize_t)(_end - _start); } | |
150 csize_t mark_off() const { assert(_mark != NULL, "not an offset"); | |
151 return (csize_t)(_mark - _start); } | |
152 csize_t capacity() const { return (csize_t)(_limit - _start); } | |
153 csize_t remaining() const { return (csize_t)(_limit - _end); } | |
154 | |
155 relocInfo* locs_start() const { return _locs_start; } | |
156 relocInfo* locs_end() const { return _locs_end; } | |
157 int locs_count() const { return (int)(_locs_end - _locs_start); } | |
158 relocInfo* locs_limit() const { return _locs_limit; } | |
159 address locs_point() const { return _locs_point; } | |
160 csize_t locs_point_off() const{ return (csize_t)(_locs_point - _start); } | |
161 csize_t locs_capacity() const { return (csize_t)(_locs_limit - _locs_start); } | |
162 csize_t locs_remaining()const { return (csize_t)(_locs_limit - _locs_end); } | |
163 | |
164 int index() const { return _index; } | |
165 bool is_allocated() const { return _start != NULL; } | |
166 bool is_empty() const { return _start == _end; } | |
167 bool is_frozen() const { return _frozen; } | |
168 bool has_locs() const { return _locs_end != NULL; } | |
169 | |
170 CodeBuffer* outer() const { return _outer; } | |
171 | |
172 // is a given address in this section? (2nd version is end-inclusive) | |
173 bool contains(address pc) const { return pc >= _start && pc < _end; } | |
174 bool contains2(address pc) const { return pc >= _start && pc <= _end; } | |
175 bool allocates(address pc) const { return pc >= _start && pc < _limit; } | |
176 bool allocates2(address pc) const { return pc >= _start && pc <= _limit; } | |
177 | |
1846 | 178 void set_end(address pc) { assert(allocates2(pc), err_msg("not in CodeBuffer memory: " PTR_FORMAT " <= " PTR_FORMAT " <= " PTR_FORMAT, _start, pc, _limit)); _end = pc; } |
179 void set_mark(address pc) { assert(contains2(pc), "not in codeBuffer"); | |
0 | 180 _mark = pc; } |
181 void set_mark_off(int offset) { assert(contains2(offset+_start),"not in codeBuffer"); | |
182 _mark = offset + _start; } | |
183 void set_mark() { _mark = _end; } | |
184 void clear_mark() { _mark = NULL; } | |
185 | |
186 void set_locs_end(relocInfo* p) { | |
187 assert(p <= locs_limit(), "locs data fits in allocated buffer"); | |
188 _locs_end = p; | |
189 } | |
190 void set_locs_point(address pc) { | |
191 assert(pc >= locs_point(), "relocation addr may not decrease"); | |
192 assert(allocates2(pc), "relocation addr must be in this section"); | |
193 _locs_point = pc; | |
194 } | |
195 | |
1748 | 196 // Code emission |
197 void emit_int8 (int8_t x) { *((int8_t*) end()) = x; set_end(end() + 1); } | |
198 void emit_int16(int16_t x) { *((int16_t*) end()) = x; set_end(end() + 2); } | |
199 void emit_int32(int32_t x) { *((int32_t*) end()) = x; set_end(end() + 4); } | |
200 void emit_int64(int64_t x) { *((int64_t*) end()) = x; set_end(end() + 8); } | |
201 | |
0 | 202 // Share a scratch buffer for relocinfo. (Hacky; saves a resource allocation.) |
203 void initialize_shared_locs(relocInfo* buf, int length); | |
204 | |
205 // Manage labels and their addresses. | |
206 address target(Label& L, address branch_pc); | |
207 | |
208 // Emit a relocation. | |
209 void relocate(address at, RelocationHolder const& rspec, int format = 0); | |
210 void relocate(address at, relocInfo::relocType rtype, int format = 0) { | |
211 if (rtype != relocInfo::none) | |
212 relocate(at, Relocation::spec_simple(rtype), format); | |
213 } | |
214 | |
215 // alignment requirement for starting offset | |
216 // Requirements are that the instruction area and the | |
217 // stubs area must start on CodeEntryAlignment, and | |
218 // the ctable on sizeof(jdouble) | |
219 int alignment() const { return MAX2((int)sizeof(jdouble), (int)CodeEntryAlignment); } | |
220 | |
221 // Slop between sections, used only when allocating temporary BufferBlob buffers. | |
222 static csize_t end_slop() { return MAX2((int)sizeof(jdouble), (int)CodeEntryAlignment); } | |
223 | |
224 csize_t align_at_start(csize_t off) const { return (csize_t) align_size_up(off, alignment()); } | |
225 | |
226 // Mark a section frozen. Assign its remaining space to | |
227 // the following section. It will never expand after this point. | |
228 inline void freeze(); // { _outer->freeze_section(this); } | |
229 | |
230 // Ensure there's enough space left in the current section. | |
231 // Return true if there was an expansion. | |
232 bool maybe_expand_to_ensure_remaining(csize_t amount); | |
233 | |
234 #ifndef PRODUCT | |
235 void decode(); | |
236 void dump(); | |
237 void print(const char* name); | |
238 #endif //PRODUCT | |
239 }; | |
240 | |
241 class CodeComment; | |
242 class CodeComments VALUE_OBJ_CLASS_SPEC { | |
243 private: | |
244 #ifndef PRODUCT | |
245 CodeComment* _comments; | |
246 #endif | |
247 | |
248 public: | |
249 CodeComments() { | |
250 #ifndef PRODUCT | |
251 _comments = NULL; | |
252 #endif | |
253 } | |
254 | |
255 void add_comment(intptr_t offset, const char * comment) PRODUCT_RETURN; | |
256 void print_block_comment(outputStream* stream, intptr_t offset) PRODUCT_RETURN; | |
257 void assign(CodeComments& other) PRODUCT_RETURN; | |
258 void free() PRODUCT_RETURN; | |
259 }; | |
260 | |
261 | |
262 // A CodeBuffer describes a memory space into which assembly | |
263 // code is generated. This memory space usually occupies the | |
264 // interior of a single BufferBlob, but in some cases it may be | |
265 // an arbitrary span of memory, even outside the code cache. | |
266 // | |
267 // A code buffer comes in two variants: | |
268 // | |
269 // (1) A CodeBuffer referring to an already allocated piece of memory: | |
270 // This is used to direct 'static' code generation (e.g. for interpreter | |
271 // or stubroutine generation, etc.). This code comes with NO relocation | |
272 // information. | |
273 // | |
274 // (2) A CodeBuffer referring to a piece of memory allocated when the | |
275 // CodeBuffer is allocated. This is used for nmethod generation. | |
276 // | |
277 // The memory can be divided up into several parts called sections. | |
278 // Each section independently accumulates code (or data) an relocations. | |
279 // Sections can grow (at the expense of a reallocation of the BufferBlob | |
280 // and recopying of all active sections). When the buffered code is finally | |
281 // written to an nmethod (or other CodeBlob), the contents (code, data, | |
282 // and relocations) of the sections are padded to an alignment and concatenated. | |
283 // Instructions and data in one section can contain relocatable references to | |
284 // addresses in a sibling section. | |
285 | |
286 class CodeBuffer: public StackObj { | |
287 friend class CodeSection; | |
288 | |
289 private: | |
290 // CodeBuffers must be allocated on the stack except for a single | |
291 // special case during expansion which is handled internally. This | |
292 // is done to guarantee proper cleanup of resources. | |
293 void* operator new(size_t size) { return ResourceObj::operator new(size); } | |
1685 | 294 void operator delete(void* p) { ShouldNotCallThis(); } |
0 | 295 |
296 public: | |
297 typedef int csize_t; // code size type; would be size_t except for history | |
298 enum { | |
1762
0878d7bae69f
6961697: move nmethod constants section before instruction section
twisti
parents:
1748
diff
changeset
|
299 // Here is the list of all possible sections. The order reflects |
0878d7bae69f
6961697: move nmethod constants section before instruction section
twisti
parents:
1748
diff
changeset
|
300 // the final layout. |
0878d7bae69f
6961697: move nmethod constants section before instruction section
twisti
parents:
1748
diff
changeset
|
301 SECT_FIRST = 0, |
0878d7bae69f
6961697: move nmethod constants section before instruction section
twisti
parents:
1748
diff
changeset
|
302 SECT_CONSTS = SECT_FIRST, // Non-instruction data: Floats, jump tables, etc. |
0 | 303 SECT_INSTS, // Executable instructions. |
304 SECT_STUBS, // Outbound trampolines for supporting call sites. | |
305 SECT_LIMIT, SECT_NONE = -1 | |
306 }; | |
307 | |
308 private: | |
309 enum { | |
310 sect_bits = 2, // assert (SECT_LIMIT <= (1<<sect_bits)) | |
311 sect_mask = (1<<sect_bits)-1 | |
312 }; | |
313 | |
314 const char* _name; | |
315 | |
1762
0878d7bae69f
6961697: move nmethod constants section before instruction section
twisti
parents:
1748
diff
changeset
|
316 CodeSection _consts; // constants, jump tables |
0 | 317 CodeSection _insts; // instructions (the main section) |
318 CodeSection _stubs; // stubs (call site support), deopt, exception handling | |
319 | |
320 CodeBuffer* _before_expand; // dead buffer, from before the last expansion | |
321 | |
322 BufferBlob* _blob; // optional buffer in CodeCache for generated code | |
323 address _total_start; // first address of combined memory buffer | |
324 csize_t _total_size; // size in bytes of combined memory buffer | |
325 | |
326 OopRecorder* _oop_recorder; | |
327 CodeComments _comments; | |
328 OopRecorder _default_oop_recorder; // override with initialize_oop_recorder | |
329 Arena* _overflow_arena; | |
330 | |
331 address _decode_begin; // start address for decode | |
332 address decode_begin(); | |
333 | |
334 void initialize_misc(const char * name) { | |
335 // all pointers other than code_start/end and those inside the sections | |
336 assert(name != NULL, "must have a name"); | |
337 _name = name; | |
338 _before_expand = NULL; | |
339 _blob = NULL; | |
340 _oop_recorder = NULL; | |
341 _decode_begin = NULL; | |
342 _overflow_arena = NULL; | |
343 } | |
344 | |
345 void initialize(address code_start, csize_t code_size) { | |
1762
0878d7bae69f
6961697: move nmethod constants section before instruction section
twisti
parents:
1748
diff
changeset
|
346 _consts.initialize_outer(this, SECT_CONSTS); |
0 | 347 _insts.initialize_outer(this, SECT_INSTS); |
348 _stubs.initialize_outer(this, SECT_STUBS); | |
349 _total_start = code_start; | |
350 _total_size = code_size; | |
351 // Initialize the main section: | |
352 _insts.initialize(code_start, code_size); | |
353 assert(!_stubs.is_allocated(), "no garbage here"); | |
354 assert(!_consts.is_allocated(), "no garbage here"); | |
355 _oop_recorder = &_default_oop_recorder; | |
356 } | |
357 | |
358 void initialize_section_size(CodeSection* cs, csize_t size); | |
359 | |
360 void freeze_section(CodeSection* cs); | |
361 | |
362 // helper for CodeBuffer::expand() | |
363 void take_over_code_from(CodeBuffer* cs); | |
364 | |
365 // ensure sections are disjoint, ordered, and contained in the blob | |
4059
44ce519bc3d1
7104960: JSR 292: +VerifyMethodHandles in product JVM can overflow buffer
never
parents:
2426
diff
changeset
|
366 void verify_section_allocation(); |
0 | 367 |
368 // copies combined relocations to the blob, returns bytes copied | |
369 // (if target is null, it is a dry run only, just for sizing) | |
370 csize_t copy_relocations_to(CodeBlob* blob) const; | |
371 | |
372 // copies combined code to the blob (assumes relocs are already in there) | |
373 void copy_code_to(CodeBlob* blob); | |
374 | |
375 // moves code sections to new buffer (assumes relocs are already in there) | |
376 void relocate_code_to(CodeBuffer* cb) const; | |
377 | |
378 // set up a model of the final layout of my contents | |
379 void compute_final_layout(CodeBuffer* dest) const; | |
380 | |
381 // Expand the given section so at least 'amount' is remaining. | |
382 // Creates a new, larger BufferBlob, and rewrites the code & relocs. | |
383 void expand(CodeSection* which_cs, csize_t amount); | |
384 | |
385 // Helper for expand. | |
386 csize_t figure_expanded_capacities(CodeSection* which_cs, csize_t amount, csize_t* new_capacity); | |
387 | |
388 public: | |
389 // (1) code buffer referring to pre-allocated instruction memory | |
1748 | 390 CodeBuffer(address code_start, csize_t code_size) { |
391 assert(code_start != NULL, "sanity"); | |
392 initialize_misc("static buffer"); | |
393 initialize(code_start, code_size); | |
4059
44ce519bc3d1
7104960: JSR 292: +VerifyMethodHandles in product JVM can overflow buffer
never
parents:
2426
diff
changeset
|
394 verify_section_allocation(); |
1748 | 395 } |
0 | 396 |
1748 | 397 // (2) CodeBuffer referring to pre-allocated CodeBlob. |
398 CodeBuffer(CodeBlob* blob); | |
399 | |
400 // (3) code buffer allocating codeBlob memory for code & relocation | |
0 | 401 // info but with lazy initialization. The name must be something |
402 // informative. | |
403 CodeBuffer(const char* name) { | |
404 initialize_misc(name); | |
405 } | |
406 | |
407 | |
1748 | 408 // (4) code buffer allocating codeBlob memory for code & relocation |
0 | 409 // info. The name must be something informative and code_size must |
410 // include both code and stubs sizes. | |
411 CodeBuffer(const char* name, csize_t code_size, csize_t locs_size) { | |
412 initialize_misc(name); | |
413 initialize(code_size, locs_size); | |
414 } | |
415 | |
416 ~CodeBuffer(); | |
417 | |
1748 | 418 // Initialize a CodeBuffer constructed using constructor 3. Using |
419 // constructor 4 is equivalent to calling constructor 3 and then | |
0 | 420 // calling this method. It's been factored out for convenience of |
421 // construction. | |
422 void initialize(csize_t code_size, csize_t locs_size); | |
423 | |
1762
0878d7bae69f
6961697: move nmethod constants section before instruction section
twisti
parents:
1748
diff
changeset
|
424 CodeSection* consts() { return &_consts; } |
0 | 425 CodeSection* insts() { return &_insts; } |
426 CodeSection* stubs() { return &_stubs; } | |
427 | |
1762
0878d7bae69f
6961697: move nmethod constants section before instruction section
twisti
parents:
1748
diff
changeset
|
428 // present sections in order; return NULL at end; consts is #0, etc. |
0 | 429 CodeSection* code_section(int n) { |
1762
0878d7bae69f
6961697: move nmethod constants section before instruction section
twisti
parents:
1748
diff
changeset
|
430 // This makes the slightly questionable but portable assumption |
0878d7bae69f
6961697: move nmethod constants section before instruction section
twisti
parents:
1748
diff
changeset
|
431 // that the various members (_consts, _insts, _stubs, etc.) are |
0878d7bae69f
6961697: move nmethod constants section before instruction section
twisti
parents:
1748
diff
changeset
|
432 // adjacent in the layout of CodeBuffer. |
0878d7bae69f
6961697: move nmethod constants section before instruction section
twisti
parents:
1748
diff
changeset
|
433 CodeSection* cs = &_consts + n; |
0 | 434 assert(cs->index() == n || !cs->is_allocated(), "sanity"); |
435 return cs; | |
436 } | |
437 const CodeSection* code_section(int n) const { // yucky const stuff | |
438 return ((CodeBuffer*)this)->code_section(n); | |
439 } | |
440 static const char* code_section_name(int n); | |
441 int section_index_of(address addr) const; | |
442 bool contains(address addr) const { | |
443 // handy for debugging | |
444 return section_index_of(addr) > SECT_NONE; | |
445 } | |
446 | |
447 // A stable mapping between 'locators' (small ints) and addresses. | |
448 static int locator_pos(int locator) { return locator >> sect_bits; } | |
449 static int locator_sect(int locator) { return locator & sect_mask; } | |
450 static int locator(int pos, int sect) { return (pos << sect_bits) | sect; } | |
451 int locator(address addr) const; | |
452 address locator_address(int locator) const; | |
453 | |
454 // Properties | |
455 const char* name() const { return _name; } | |
456 CodeBuffer* before_expand() const { return _before_expand; } | |
457 BufferBlob* blob() const { return _blob; } | |
458 void set_blob(BufferBlob* blob); | |
459 void free_blob(); // Free the blob, if we own one. | |
460 | |
461 // Properties relative to the insts section: | |
1748 | 462 address insts_begin() const { return _insts.start(); } |
463 address insts_end() const { return _insts.end(); } | |
464 void set_insts_end(address end) { _insts.set_end(end); } | |
465 address insts_limit() const { return _insts.limit(); } | |
466 address insts_mark() const { return _insts.mark(); } | |
467 void set_insts_mark() { _insts.set_mark(); } | |
468 void clear_insts_mark() { _insts.clear_mark(); } | |
0 | 469 |
470 // is there anything in the buffer other than the current section? | |
1748 | 471 bool is_pure() const { return insts_size() == total_content_size(); } |
0 | 472 |
473 // size in bytes of output so far in the insts sections | |
1748 | 474 csize_t insts_size() const { return _insts.size(); } |
0 | 475 |
1748 | 476 // same as insts_size(), except that it asserts there is no non-code here |
477 csize_t pure_insts_size() const { assert(is_pure(), "no non-code"); | |
478 return insts_size(); } | |
0 | 479 // capacity in bytes of the insts sections |
1748 | 480 csize_t insts_capacity() const { return _insts.capacity(); } |
0 | 481 |
482 // number of bytes remaining in the insts section | |
1748 | 483 csize_t insts_remaining() const { return _insts.remaining(); } |
0 | 484 |
485 // is a given address in the insts section? (2nd version is end-inclusive) | |
1748 | 486 bool insts_contains(address pc) const { return _insts.contains(pc); } |
487 bool insts_contains2(address pc) const { return _insts.contains2(pc); } | |
0 | 488 |
1748 | 489 // Allocated size in all sections, when aligned and concatenated |
490 // (this is the eventual state of the content in its final | |
491 // CodeBlob). | |
492 csize_t total_content_size() const; | |
0 | 493 |
1762
0878d7bae69f
6961697: move nmethod constants section before instruction section
twisti
parents:
1748
diff
changeset
|
494 // Combined offset (relative to start of first section) of given |
0878d7bae69f
6961697: move nmethod constants section before instruction section
twisti
parents:
1748
diff
changeset
|
495 // section, as eventually found in the final CodeBlob. |
0878d7bae69f
6961697: move nmethod constants section before instruction section
twisti
parents:
1748
diff
changeset
|
496 csize_t total_offset_of(CodeSection* cs) const; |
0 | 497 |
498 // allocated size of all relocation data, including index, rounded up | |
499 csize_t total_relocation_size() const; | |
500 | |
501 // allocated size of any and all recorded oops | |
502 csize_t total_oop_size() const { | |
503 OopRecorder* recorder = oop_recorder(); | |
504 return (recorder == NULL)? 0: recorder->oop_size(); | |
505 } | |
506 | |
507 // Configuration functions, called immediately after the CB is constructed. | |
508 // The section sizes are subtracted from the original insts section. | |
509 // Note: Call them in reverse section order, because each steals from insts. | |
510 void initialize_consts_size(csize_t size) { initialize_section_size(&_consts, size); } | |
511 void initialize_stubs_size(csize_t size) { initialize_section_size(&_stubs, size); } | |
512 // Override default oop recorder. | |
513 void initialize_oop_recorder(OopRecorder* r); | |
514 | |
515 OopRecorder* oop_recorder() const { return _oop_recorder; } | |
516 CodeComments& comments() { return _comments; } | |
517 | |
518 // Code generation | |
519 void relocate(address at, RelocationHolder const& rspec, int format = 0) { | |
520 _insts.relocate(at, rspec, format); | |
521 } | |
522 void relocate(address at, relocInfo::relocType rtype, int format = 0) { | |
523 _insts.relocate(at, rtype, format); | |
524 } | |
525 | |
526 // Management of overflow storage for binding of Labels. | |
527 GrowableArray<int>* create_patch_overflow(); | |
528 | |
529 // NMethod generation | |
530 void copy_code_and_locs_to(CodeBlob* blob) { | |
531 assert(blob != NULL, "sane"); | |
532 copy_relocations_to(blob); | |
533 copy_code_to(blob); | |
534 } | |
1563
1a5913bf5e19
6951083: oops and relocations should part of nmethod not CodeBlob
twisti
parents:
1378
diff
changeset
|
535 void copy_oops_to(nmethod* nm) { |
0 | 536 if (!oop_recorder()->is_unused()) { |
1563
1a5913bf5e19
6951083: oops and relocations should part of nmethod not CodeBlob
twisti
parents:
1378
diff
changeset
|
537 oop_recorder()->copy_to(nm); |
0 | 538 } |
539 } | |
540 | |
541 // Transform an address from the code in this code buffer to a specified code buffer | |
542 address transform_address(const CodeBuffer &cb, address addr) const; | |
543 | |
544 void block_comment(intptr_t offset, const char * comment) PRODUCT_RETURN; | |
545 | |
4059
44ce519bc3d1
7104960: JSR 292: +VerifyMethodHandles in product JVM can overflow buffer
never
parents:
2426
diff
changeset
|
546 // Log a little info about section usage in the CodeBuffer |
44ce519bc3d1
7104960: JSR 292: +VerifyMethodHandles in product JVM can overflow buffer
never
parents:
2426
diff
changeset
|
547 void log_section_sizes(const char* name); |
44ce519bc3d1
7104960: JSR 292: +VerifyMethodHandles in product JVM can overflow buffer
never
parents:
2426
diff
changeset
|
548 |
0 | 549 #ifndef PRODUCT |
550 public: | |
551 // Printing / Decoding | |
552 // decodes from decode_begin() to code_end() and sets decode_begin to end | |
553 void decode(); | |
554 void decode_all(); // decodes all the code | |
555 void skip_decode(); // sets decode_begin to code_end(); | |
556 void print(); | |
557 #endif | |
558 | |
559 | |
560 // The following header contains architecture-specific implementations | |
1972 | 561 #ifdef TARGET_ARCH_x86 |
562 # include "codeBuffer_x86.hpp" | |
563 #endif | |
564 #ifdef TARGET_ARCH_sparc | |
565 # include "codeBuffer_sparc.hpp" | |
566 #endif | |
567 #ifdef TARGET_ARCH_zero | |
568 # include "codeBuffer_zero.hpp" | |
569 #endif | |
2192
b92c45f2bc75
7016023: Enable building ARM and PPC from src/closed repository
bobv
parents:
1972
diff
changeset
|
570 #ifdef TARGET_ARCH_arm |
b92c45f2bc75
7016023: Enable building ARM and PPC from src/closed repository
bobv
parents:
1972
diff
changeset
|
571 # include "codeBuffer_arm.hpp" |
b92c45f2bc75
7016023: Enable building ARM and PPC from src/closed repository
bobv
parents:
1972
diff
changeset
|
572 #endif |
b92c45f2bc75
7016023: Enable building ARM and PPC from src/closed repository
bobv
parents:
1972
diff
changeset
|
573 #ifdef TARGET_ARCH_ppc |
b92c45f2bc75
7016023: Enable building ARM and PPC from src/closed repository
bobv
parents:
1972
diff
changeset
|
574 # include "codeBuffer_ppc.hpp" |
b92c45f2bc75
7016023: Enable building ARM and PPC from src/closed repository
bobv
parents:
1972
diff
changeset
|
575 #endif |
1972 | 576 |
0 | 577 }; |
578 | |
579 | |
580 inline void CodeSection::freeze() { | |
581 _outer->freeze_section(this); | |
582 } | |
583 | |
584 inline bool CodeSection::maybe_expand_to_ensure_remaining(csize_t amount) { | |
585 if (remaining() < amount) { _outer->expand(this, amount); return true; } | |
586 return false; | |
587 } | |
1972 | 588 |
589 #endif // SHARE_VM_ASM_CODEBUFFER_HPP |