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annotate src/share/vm/asm/codeBuffer.hpp @ 12888:4a2acfb16e97
8025657: compiler/intrinsics/mathexact/ConstantTest.java fails on assert in lcm.cpp on solaris x64
Reviewed-by: kvn, twisti
author | rbackman |
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date | Fri, 11 Oct 2013 12:06:14 +0200 |
parents | 9758d9f36299 |
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rev | line source |
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0 | 1 /* |
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2 * Copyright (c) 1997, 2013, Oracle and/or its affiliates. All rights reserved. |
0 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
4 * | |
5 * This code is free software; you can redistribute it and/or modify it | |
6 * under the terms of the GNU General Public License version 2 only, as | |
7 * published by the Free Software Foundation. | |
8 * | |
9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
12 * version 2 for more details (a copy is included in the LICENSE file that | |
13 * accompanied this code). | |
14 * | |
15 * You should have received a copy of the GNU General Public License version | |
16 * 2 along with this work; if not, write to the Free Software Foundation, | |
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
18 * | |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
0 | 22 * |
23 */ | |
24 | |
1972 | 25 #ifndef SHARE_VM_ASM_CODEBUFFER_HPP |
26 #define SHARE_VM_ASM_CODEBUFFER_HPP | |
27 | |
28 #include "code/oopRecorder.hpp" | |
29 #include "code/relocInfo.hpp" | |
30 | |
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31 class CodeStrings; |
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32 class PhaseCFG; |
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33 class Compile; |
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34 class BufferBlob; |
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35 class CodeBuffer; |
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36 class Label; |
0 | 37 |
38 class CodeOffsets: public StackObj { | |
39 public: | |
40 enum Entries { Entry, | |
41 Verified_Entry, | |
42 Frame_Complete, // Offset in the code where the frame setup is (for forte stackwalks) is complete | |
43 OSR_Entry, | |
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44 Dtrace_trap = OSR_Entry, // dtrace probes can never have an OSR entry so reuse it |
0 | 45 Exceptions, // Offset where exception handler lives |
46 Deopt, // Offset where deopt handler lives | |
1204 | 47 DeoptMH, // Offset where MethodHandle deopt handler lives |
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48 UnwindHandler, // Offset to default unwind handler |
0 | 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() { | |
1204 | 61 _values[Entry ] = 0; |
0 | 62 _values[Verified_Entry] = 0; |
63 _values[Frame_Complete] = frame_never_safe; | |
1204 | 64 _values[OSR_Entry ] = 0; |
65 _values[Exceptions ] = -1; | |
66 _values[Deopt ] = -1; | |
67 _values[DeoptMH ] = -1; | |
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68 _values[UnwindHandler ] = -1; |
0 | 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; | |
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110 debug_only(_index = (char)-1); |
0 | 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 | |
1846 | 176 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; } |
177 void set_mark(address pc) { assert(contains2(pc), "not in codeBuffer"); | |
0 | 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 | |
1748 | 194 // Code emission |
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195 void emit_int8 ( int8_t x) { *((int8_t*) end()) = x; set_end(end() + sizeof(int8_t)); } |
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196 void emit_int16( int16_t x) { *((int16_t*) end()) = x; set_end(end() + sizeof(int16_t)); } |
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197 void emit_int32( int32_t x) { *((int32_t*) end()) = x; set_end(end() + sizeof(int32_t)); } |
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198 void emit_int64( int64_t x) { *((int64_t*) end()) = x; set_end(end() + sizeof(int64_t)); } |
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199 |
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200 void emit_float( jfloat x) { *((jfloat*) end()) = x; set_end(end() + sizeof(jfloat)); } |
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201 void emit_double(jdouble x) { *((jdouble*) end()) = x; set_end(end() + sizeof(jdouble)); } |
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202 void emit_address(address x) { *((address*) end()) = x; set_end(end() + sizeof(address)); } |
1748 | 203 |
0 | 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 | |
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243 class CodeString; |
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244 class CodeStrings VALUE_OBJ_CLASS_SPEC { |
0 | 245 private: |
246 #ifndef PRODUCT | |
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247 CodeString* _strings; |
0 | 248 #endif |
249 | |
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250 CodeString* find(intptr_t offset) const; |
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251 CodeString* find_last(intptr_t offset) const; |
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252 |
0 | 253 public: |
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254 CodeStrings() { |
0 | 255 #ifndef PRODUCT |
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256 _strings = NULL; |
0 | 257 #endif |
258 } | |
259 | |
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260 const char* add_string(const char * string) PRODUCT_RETURN_(return NULL;); |
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261 |
0 | 262 void add_comment(intptr_t offset, const char * comment) PRODUCT_RETURN; |
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263 void print_block_comment(outputStream* stream, intptr_t offset) const PRODUCT_RETURN; |
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264 void assign(CodeStrings& other) PRODUCT_RETURN; |
0 | 265 void free() PRODUCT_RETURN; |
266 }; | |
267 | |
268 // A CodeBuffer describes a memory space into which assembly | |
269 // code is generated. This memory space usually occupies the | |
270 // interior of a single BufferBlob, but in some cases it may be | |
271 // an arbitrary span of memory, even outside the code cache. | |
272 // | |
273 // A code buffer comes in two variants: | |
274 // | |
275 // (1) A CodeBuffer referring to an already allocated piece of memory: | |
276 // This is used to direct 'static' code generation (e.g. for interpreter | |
277 // or stubroutine generation, etc.). This code comes with NO relocation | |
278 // information. | |
279 // | |
280 // (2) A CodeBuffer referring to a piece of memory allocated when the | |
281 // CodeBuffer is allocated. This is used for nmethod generation. | |
282 // | |
283 // The memory can be divided up into several parts called sections. | |
284 // Each section independently accumulates code (or data) an relocations. | |
285 // Sections can grow (at the expense of a reallocation of the BufferBlob | |
286 // and recopying of all active sections). When the buffered code is finally | |
287 // written to an nmethod (or other CodeBlob), the contents (code, data, | |
288 // and relocations) of the sections are padded to an alignment and concatenated. | |
289 // Instructions and data in one section can contain relocatable references to | |
290 // addresses in a sibling section. | |
291 | |
292 class CodeBuffer: public StackObj { | |
293 friend class CodeSection; | |
294 | |
295 private: | |
296 // CodeBuffers must be allocated on the stack except for a single | |
297 // special case during expansion which is handled internally. This | |
298 // is done to guarantee proper cleanup of resources. | |
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299 void* operator new(size_t size) throw() { return ResourceObj::operator new(size); } |
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300 void operator delete(void* p) { ShouldNotCallThis(); } |
0 | 301 |
302 public: | |
303 typedef int csize_t; // code size type; would be size_t except for history | |
304 enum { | |
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305 // Here is the list of all possible sections. The order reflects |
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306 // the final layout. |
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307 SECT_FIRST = 0, |
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308 SECT_CONSTS = SECT_FIRST, // Non-instruction data: Floats, jump tables, etc. |
0 | 309 SECT_INSTS, // Executable instructions. |
310 SECT_STUBS, // Outbound trampolines for supporting call sites. | |
311 SECT_LIMIT, SECT_NONE = -1 | |
312 }; | |
313 | |
314 private: | |
315 enum { | |
316 sect_bits = 2, // assert (SECT_LIMIT <= (1<<sect_bits)) | |
317 sect_mask = (1<<sect_bits)-1 | |
318 }; | |
319 | |
320 const char* _name; | |
321 | |
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322 CodeSection _consts; // constants, jump tables |
0 | 323 CodeSection _insts; // instructions (the main section) |
324 CodeSection _stubs; // stubs (call site support), deopt, exception handling | |
325 | |
326 CodeBuffer* _before_expand; // dead buffer, from before the last expansion | |
327 | |
328 BufferBlob* _blob; // optional buffer in CodeCache for generated code | |
329 address _total_start; // first address of combined memory buffer | |
330 csize_t _total_size; // size in bytes of combined memory buffer | |
331 | |
332 OopRecorder* _oop_recorder; | |
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333 CodeStrings _strings; |
0 | 334 OopRecorder _default_oop_recorder; // override with initialize_oop_recorder |
335 Arena* _overflow_arena; | |
336 | |
337 address _decode_begin; // start address for decode | |
338 address decode_begin(); | |
339 | |
340 void initialize_misc(const char * name) { | |
341 // all pointers other than code_start/end and those inside the sections | |
342 assert(name != NULL, "must have a name"); | |
343 _name = name; | |
344 _before_expand = NULL; | |
345 _blob = NULL; | |
346 _oop_recorder = NULL; | |
347 _decode_begin = NULL; | |
348 _overflow_arena = NULL; | |
349 } | |
350 | |
351 void initialize(address code_start, csize_t code_size) { | |
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352 _consts.initialize_outer(this, SECT_CONSTS); |
0 | 353 _insts.initialize_outer(this, SECT_INSTS); |
354 _stubs.initialize_outer(this, SECT_STUBS); | |
355 _total_start = code_start; | |
356 _total_size = code_size; | |
357 // Initialize the main section: | |
358 _insts.initialize(code_start, code_size); | |
359 assert(!_stubs.is_allocated(), "no garbage here"); | |
360 assert(!_consts.is_allocated(), "no garbage here"); | |
361 _oop_recorder = &_default_oop_recorder; | |
362 } | |
363 | |
364 void initialize_section_size(CodeSection* cs, csize_t size); | |
365 | |
366 void freeze_section(CodeSection* cs); | |
367 | |
368 // helper for CodeBuffer::expand() | |
369 void take_over_code_from(CodeBuffer* cs); | |
370 | |
371 // ensure sections are disjoint, ordered, and contained in the blob | |
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372 void verify_section_allocation(); |
0 | 373 |
374 // copies combined relocations to the blob, returns bytes copied | |
375 // (if target is null, it is a dry run only, just for sizing) | |
376 csize_t copy_relocations_to(CodeBlob* blob) const; | |
377 | |
378 // copies combined code to the blob (assumes relocs are already in there) | |
379 void copy_code_to(CodeBlob* blob); | |
380 | |
381 // moves code sections to new buffer (assumes relocs are already in there) | |
382 void relocate_code_to(CodeBuffer* cb) const; | |
383 | |
384 // set up a model of the final layout of my contents | |
385 void compute_final_layout(CodeBuffer* dest) const; | |
386 | |
387 // Expand the given section so at least 'amount' is remaining. | |
388 // Creates a new, larger BufferBlob, and rewrites the code & relocs. | |
389 void expand(CodeSection* which_cs, csize_t amount); | |
390 | |
391 // Helper for expand. | |
392 csize_t figure_expanded_capacities(CodeSection* which_cs, csize_t amount, csize_t* new_capacity); | |
393 | |
394 public: | |
395 // (1) code buffer referring to pre-allocated instruction memory | |
1748 | 396 CodeBuffer(address code_start, csize_t code_size) { |
397 assert(code_start != NULL, "sanity"); | |
398 initialize_misc("static buffer"); | |
399 initialize(code_start, code_size); | |
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400 verify_section_allocation(); |
1748 | 401 } |
0 | 402 |
1748 | 403 // (2) CodeBuffer referring to pre-allocated CodeBlob. |
404 CodeBuffer(CodeBlob* blob); | |
405 | |
406 // (3) code buffer allocating codeBlob memory for code & relocation | |
0 | 407 // info but with lazy initialization. The name must be something |
408 // informative. | |
409 CodeBuffer(const char* name) { | |
410 initialize_misc(name); | |
411 } | |
412 | |
413 | |
1748 | 414 // (4) code buffer allocating codeBlob memory for code & relocation |
0 | 415 // info. The name must be something informative and code_size must |
416 // include both code and stubs sizes. | |
417 CodeBuffer(const char* name, csize_t code_size, csize_t locs_size) { | |
418 initialize_misc(name); | |
419 initialize(code_size, locs_size); | |
420 } | |
421 | |
422 ~CodeBuffer(); | |
423 | |
1748 | 424 // Initialize a CodeBuffer constructed using constructor 3. Using |
425 // constructor 4 is equivalent to calling constructor 3 and then | |
0 | 426 // calling this method. It's been factored out for convenience of |
427 // construction. | |
428 void initialize(csize_t code_size, csize_t locs_size); | |
429 | |
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430 CodeSection* consts() { return &_consts; } |
0 | 431 CodeSection* insts() { return &_insts; } |
432 CodeSection* stubs() { return &_stubs; } | |
433 | |
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434 // present sections in order; return NULL at end; consts is #0, etc. |
0 | 435 CodeSection* code_section(int n) { |
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436 // This makes the slightly questionable but portable assumption |
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437 // that the various members (_consts, _insts, _stubs, etc.) are |
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438 // adjacent in the layout of CodeBuffer. |
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439 CodeSection* cs = &_consts + n; |
0 | 440 assert(cs->index() == n || !cs->is_allocated(), "sanity"); |
441 return cs; | |
442 } | |
443 const CodeSection* code_section(int n) const { // yucky const stuff | |
444 return ((CodeBuffer*)this)->code_section(n); | |
445 } | |
446 static const char* code_section_name(int n); | |
447 int section_index_of(address addr) const; | |
448 bool contains(address addr) const { | |
449 // handy for debugging | |
450 return section_index_of(addr) > SECT_NONE; | |
451 } | |
452 | |
453 // A stable mapping between 'locators' (small ints) and addresses. | |
454 static int locator_pos(int locator) { return locator >> sect_bits; } | |
455 static int locator_sect(int locator) { return locator & sect_mask; } | |
456 static int locator(int pos, int sect) { return (pos << sect_bits) | sect; } | |
457 int locator(address addr) const; | |
458 address locator_address(int locator) const; | |
459 | |
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460 // Heuristic for pre-packing the taken/not-taken bit of a predicted branch. |
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461 bool is_backward_branch(Label& L); |
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462 |
0 | 463 // Properties |
464 const char* name() const { return _name; } | |
465 CodeBuffer* before_expand() const { return _before_expand; } | |
466 BufferBlob* blob() const { return _blob; } | |
467 void set_blob(BufferBlob* blob); | |
468 void free_blob(); // Free the blob, if we own one. | |
469 | |
470 // Properties relative to the insts section: | |
1748 | 471 address insts_begin() const { return _insts.start(); } |
472 address insts_end() const { return _insts.end(); } | |
473 void set_insts_end(address end) { _insts.set_end(end); } | |
474 address insts_limit() const { return _insts.limit(); } | |
475 address insts_mark() const { return _insts.mark(); } | |
476 void set_insts_mark() { _insts.set_mark(); } | |
477 void clear_insts_mark() { _insts.clear_mark(); } | |
0 | 478 |
479 // is there anything in the buffer other than the current section? | |
1748 | 480 bool is_pure() const { return insts_size() == total_content_size(); } |
0 | 481 |
482 // size in bytes of output so far in the insts sections | |
1748 | 483 csize_t insts_size() const { return _insts.size(); } |
0 | 484 |
1748 | 485 // same as insts_size(), except that it asserts there is no non-code here |
486 csize_t pure_insts_size() const { assert(is_pure(), "no non-code"); | |
487 return insts_size(); } | |
0 | 488 // capacity in bytes of the insts sections |
1748 | 489 csize_t insts_capacity() const { return _insts.capacity(); } |
0 | 490 |
491 // number of bytes remaining in the insts section | |
1748 | 492 csize_t insts_remaining() const { return _insts.remaining(); } |
0 | 493 |
494 // is a given address in the insts section? (2nd version is end-inclusive) | |
1748 | 495 bool insts_contains(address pc) const { return _insts.contains(pc); } |
496 bool insts_contains2(address pc) const { return _insts.contains2(pc); } | |
0 | 497 |
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498 // Record any extra oops required to keep embedded metadata alive |
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499 void finalize_oop_references(methodHandle method); |
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500 |
1748 | 501 // Allocated size in all sections, when aligned and concatenated |
502 // (this is the eventual state of the content in its final | |
503 // CodeBlob). | |
504 csize_t total_content_size() const; | |
0 | 505 |
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506 // Combined offset (relative to start of first section) of given |
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507 // section, as eventually found in the final CodeBlob. |
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508 csize_t total_offset_of(CodeSection* cs) const; |
0 | 509 |
510 // allocated size of all relocation data, including index, rounded up | |
511 csize_t total_relocation_size() const; | |
512 | |
513 // allocated size of any and all recorded oops | |
514 csize_t total_oop_size() const { | |
515 OopRecorder* recorder = oop_recorder(); | |
516 return (recorder == NULL)? 0: recorder->oop_size(); | |
517 } | |
518 | |
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519 // allocated size of any and all recorded metadata |
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520 csize_t total_metadata_size() const { |
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521 OopRecorder* recorder = oop_recorder(); |
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522 return (recorder == NULL)? 0: recorder->metadata_size(); |
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523 } |
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524 |
0 | 525 // Configuration functions, called immediately after the CB is constructed. |
526 // The section sizes are subtracted from the original insts section. | |
527 // Note: Call them in reverse section order, because each steals from insts. | |
528 void initialize_consts_size(csize_t size) { initialize_section_size(&_consts, size); } | |
529 void initialize_stubs_size(csize_t size) { initialize_section_size(&_stubs, size); } | |
530 // Override default oop recorder. | |
531 void initialize_oop_recorder(OopRecorder* r); | |
532 | |
533 OopRecorder* oop_recorder() const { return _oop_recorder; } | |
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534 CodeStrings& strings() { return _strings; } |
0 | 535 |
536 // Code generation | |
537 void relocate(address at, RelocationHolder const& rspec, int format = 0) { | |
538 _insts.relocate(at, rspec, format); | |
539 } | |
540 void relocate(address at, relocInfo::relocType rtype, int format = 0) { | |
541 _insts.relocate(at, rtype, format); | |
542 } | |
543 | |
544 // Management of overflow storage for binding of Labels. | |
545 GrowableArray<int>* create_patch_overflow(); | |
546 | |
547 // NMethod generation | |
548 void copy_code_and_locs_to(CodeBlob* blob) { | |
549 assert(blob != NULL, "sane"); | |
550 copy_relocations_to(blob); | |
551 copy_code_to(blob); | |
552 } | |
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553 void copy_values_to(nmethod* nm) { |
0 | 554 if (!oop_recorder()->is_unused()) { |
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555 oop_recorder()->copy_values_to(nm); |
0 | 556 } |
557 } | |
558 | |
559 // Transform an address from the code in this code buffer to a specified code buffer | |
560 address transform_address(const CodeBuffer &cb, address addr) const; | |
561 | |
562 void block_comment(intptr_t offset, const char * comment) PRODUCT_RETURN; | |
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563 const char* code_string(const char* str) PRODUCT_RETURN_(return NULL;); |
0 | 564 |
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565 // Log a little info about section usage in the CodeBuffer |
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566 void log_section_sizes(const char* name); |
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567 |
0 | 568 #ifndef PRODUCT |
569 public: | |
570 // Printing / Decoding | |
571 // decodes from decode_begin() to code_end() and sets decode_begin to end | |
572 void decode(); | |
573 void decode_all(); // decodes all the code | |
574 void skip_decode(); // sets decode_begin to code_end(); | |
575 void print(); | |
576 #endif | |
577 | |
578 | |
579 // The following header contains architecture-specific implementations | |
1972 | 580 #ifdef TARGET_ARCH_x86 |
581 # include "codeBuffer_x86.hpp" | |
582 #endif | |
583 #ifdef TARGET_ARCH_sparc | |
584 # include "codeBuffer_sparc.hpp" | |
585 #endif | |
586 #ifdef TARGET_ARCH_zero | |
587 # include "codeBuffer_zero.hpp" | |
588 #endif | |
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589 #ifdef TARGET_ARCH_arm |
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590 # include "codeBuffer_arm.hpp" |
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591 #endif |
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592 #ifdef TARGET_ARCH_ppc |
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593 # include "codeBuffer_ppc.hpp" |
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594 #endif |
1972 | 595 |
0 | 596 }; |
597 | |
598 | |
599 inline void CodeSection::freeze() { | |
600 _outer->freeze_section(this); | |
601 } | |
602 | |
603 inline bool CodeSection::maybe_expand_to_ensure_remaining(csize_t amount) { | |
604 if (remaining() < amount) { _outer->expand(this, amount); return true; } | |
605 return false; | |
606 } | |
1972 | 607 |
608 #endif // SHARE_VM_ASM_CODEBUFFER_HPP |