Mercurial > hg > truffle
annotate src/share/vm/asm/codeBuffer.hpp @ 21282:93215cb4a2f9
include duringCall and rethrowException for BytecodeFrames in disassembly comments
author | Doug Simon <doug.simon@oracle.com> |
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date | Mon, 11 May 2015 12:22:49 +0200 |
parents | 094cbdffa87d |
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rev | line source |
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0 | 1 /* |
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2 * Copyright (c) 1997, 2014, 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" | |
20435 | 30 #include "utilities/debug.hpp" |
1972 | 31 |
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32 class CodeStrings; |
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33 class PhaseCFG; |
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34 class Compile; |
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35 class BufferBlob; |
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36 class CodeBuffer; |
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37 class Label; |
0 | 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, | |
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45 Dtrace_trap = OSR_Entry, // dtrace probes can never have an OSR entry so reuse it |
0 | 46 Exceptions, // Offset where exception handler lives |
47 Deopt, // Offset where deopt handler lives | |
1204 | 48 DeoptMH, // Offset where MethodHandle deopt handler lives |
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49 UnwindHandler, // Offset to default unwind handler |
0 | 50 max_Entries }; |
51 | |
52 // special value to note codeBlobs where profile (forte) stack walking is | |
53 // always dangerous and suspect. | |
54 | |
55 enum { frame_never_safe = -1 }; | |
56 | |
57 private: | |
58 int _values[max_Entries]; | |
59 | |
60 public: | |
61 CodeOffsets() { | |
1204 | 62 _values[Entry ] = 0; |
0 | 63 _values[Verified_Entry] = 0; |
64 _values[Frame_Complete] = frame_never_safe; | |
1204 | 65 _values[OSR_Entry ] = 0; |
66 _values[Exceptions ] = -1; | |
67 _values[Deopt ] = -1; | |
68 _values[DeoptMH ] = -1; | |
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69 _values[UnwindHandler ] = -1; |
0 | 70 } |
71 | |
72 int value(Entries e) { return _values[e]; } | |
73 void set_value(Entries e, int val) { _values[e] = val; } | |
74 }; | |
75 | |
76 // This class represents a stream of code and associated relocations. | |
77 // There are a few in each CodeBuffer. | |
78 // They are filled concurrently, and concatenated at the end. | |
79 class CodeSection VALUE_OBJ_CLASS_SPEC { | |
80 friend class CodeBuffer; | |
81 public: | |
82 typedef int csize_t; // code size type; would be size_t except for history | |
83 | |
84 private: | |
85 address _start; // first byte of contents (instructions) | |
86 address _mark; // user mark, usually an instruction beginning | |
87 address _end; // current end address | |
88 address _limit; // last possible (allocated) end address | |
89 relocInfo* _locs_start; // first byte of relocation information | |
90 relocInfo* _locs_end; // first byte after relocation information | |
91 relocInfo* _locs_limit; // first byte after relocation information buf | |
92 address _locs_point; // last relocated position (grows upward) | |
93 bool _locs_own; // did I allocate the locs myself? | |
94 bool _frozen; // no more expansion of this section | |
95 char _index; // my section number (SECT_INST, etc.) | |
96 CodeBuffer* _outer; // enclosing CodeBuffer | |
97 | |
98 // (Note: _locs_point used to be called _last_reloc_offset.) | |
99 | |
100 CodeSection() { | |
101 _start = NULL; | |
102 _mark = NULL; | |
103 _end = NULL; | |
104 _limit = NULL; | |
105 _locs_start = NULL; | |
106 _locs_end = NULL; | |
107 _locs_limit = NULL; | |
108 _locs_point = NULL; | |
109 _locs_own = false; | |
110 _frozen = false; | |
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111 debug_only(_index = (char)-1); |
0 | 112 debug_only(_outer = (CodeBuffer*)badAddress); |
113 } | |
114 | |
115 void initialize_outer(CodeBuffer* outer, int index) { | |
116 _outer = outer; | |
117 _index = index; | |
118 } | |
119 | |
120 void initialize(address start, csize_t size = 0) { | |
121 assert(_start == NULL, "only one init step, please"); | |
122 _start = start; | |
123 _mark = NULL; | |
124 _end = start; | |
125 | |
126 _limit = start + size; | |
127 _locs_point = start; | |
128 } | |
129 | |
130 void initialize_locs(int locs_capacity); | |
131 void expand_locs(int new_capacity); | |
132 void initialize_locs_from(const CodeSection* source_cs); | |
133 | |
134 // helper for CodeBuffer::expand() | |
135 void take_over_code_from(CodeSection* cs) { | |
136 _start = cs->_start; | |
137 _mark = cs->_mark; | |
138 _end = cs->_end; | |
139 _limit = cs->_limit; | |
140 _locs_point = cs->_locs_point; | |
141 } | |
142 | |
143 public: | |
144 address start() const { return _start; } | |
145 address mark() const { return _mark; } | |
146 address end() const { return _end; } | |
147 address limit() const { return _limit; } | |
148 csize_t size() const { return (csize_t)(_end - _start); } | |
149 csize_t mark_off() const { assert(_mark != NULL, "not an offset"); | |
150 return (csize_t)(_mark - _start); } | |
151 csize_t capacity() const { return (csize_t)(_limit - _start); } | |
152 csize_t remaining() const { return (csize_t)(_limit - _end); } | |
153 | |
154 relocInfo* locs_start() const { return _locs_start; } | |
155 relocInfo* locs_end() const { return _locs_end; } | |
156 int locs_count() const { return (int)(_locs_end - _locs_start); } | |
157 relocInfo* locs_limit() const { return _locs_limit; } | |
158 address locs_point() const { return _locs_point; } | |
159 csize_t locs_point_off() const{ return (csize_t)(_locs_point - _start); } | |
160 csize_t locs_capacity() const { return (csize_t)(_locs_limit - _locs_start); } | |
161 csize_t locs_remaining()const { return (csize_t)(_locs_limit - _locs_end); } | |
162 | |
163 int index() const { return _index; } | |
164 bool is_allocated() const { return _start != NULL; } | |
165 bool is_empty() const { return _start == _end; } | |
166 bool is_frozen() const { return _frozen; } | |
167 bool has_locs() const { return _locs_end != NULL; } | |
168 | |
169 CodeBuffer* outer() const { return _outer; } | |
170 | |
171 // is a given address in this section? (2nd version is end-inclusive) | |
172 bool contains(address pc) const { return pc >= _start && pc < _end; } | |
173 bool contains2(address pc) const { return pc >= _start && pc <= _end; } | |
174 bool allocates(address pc) const { return pc >= _start && pc < _limit; } | |
175 bool allocates2(address pc) const { return pc >= _start && pc <= _limit; } | |
176 | |
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177 void set_end(address pc) { assert(allocates2(pc), err_msg("not in CodeBuffer memory: " PTR_FORMAT " <= " PTR_FORMAT " <= " INTPTR_FORMAT, p2i(_start), p2i(pc), p2i(_limit))); _end = pc; } |
1846 | 178 void set_mark(address pc) { assert(contains2(pc), "not in codeBuffer"); |
0 | 179 _mark = pc; } |
180 void set_mark_off(int offset) { assert(contains2(offset+_start),"not in codeBuffer"); | |
181 _mark = offset + _start; } | |
182 void set_mark() { _mark = _end; } | |
183 void clear_mark() { _mark = NULL; } | |
184 | |
185 void set_locs_end(relocInfo* p) { | |
186 assert(p <= locs_limit(), "locs data fits in allocated buffer"); | |
187 _locs_end = p; | |
188 } | |
189 void set_locs_point(address pc) { | |
190 assert(pc >= locs_point(), "relocation addr may not decrease"); | |
191 assert(allocates2(pc), "relocation addr must be in this section"); | |
192 _locs_point = pc; | |
193 } | |
194 | |
1748 | 195 // Code emission |
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196 void emit_int8 ( int8_t x) { *((int8_t*) end()) = x; set_end(end() + sizeof(int8_t)); } |
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197 void emit_int16( int16_t x) { *((int16_t*) end()) = x; set_end(end() + sizeof(int16_t)); } |
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198 void emit_int32( int32_t x) { *((int32_t*) end()) = x; set_end(end() + sizeof(int32_t)); } |
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199 void emit_int64( int64_t x) { *((int64_t*) end()) = x; set_end(end() + sizeof(int64_t)); } |
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200 |
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201 void emit_float( jfloat x) { *((jfloat*) end()) = x; set_end(end() + sizeof(jfloat)); } |
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202 void emit_double(jdouble x) { *((jdouble*) end()) = x; set_end(end() + sizeof(jdouble)); } |
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203 void emit_address(address x) { *((address*) end()) = x; set_end(end() + sizeof(address)); } |
1748 | 204 |
0 | 205 // Share a scratch buffer for relocinfo. (Hacky; saves a resource allocation.) |
206 void initialize_shared_locs(relocInfo* buf, int length); | |
207 | |
208 // Manage labels and their addresses. | |
209 address target(Label& L, address branch_pc); | |
210 | |
211 // Emit a relocation. | |
212 void relocate(address at, RelocationHolder const& rspec, int format = 0); | |
213 void relocate(address at, relocInfo::relocType rtype, int format = 0) { | |
214 if (rtype != relocInfo::none) | |
215 relocate(at, Relocation::spec_simple(rtype), format); | |
216 } | |
217 | |
218 // alignment requirement for starting offset | |
219 // Requirements are that the instruction area and the | |
220 // stubs area must start on CodeEntryAlignment, and | |
221 // the ctable on sizeof(jdouble) | |
222 int alignment() const { return MAX2((int)sizeof(jdouble), (int)CodeEntryAlignment); } | |
223 | |
224 // Slop between sections, used only when allocating temporary BufferBlob buffers. | |
225 static csize_t end_slop() { return MAX2((int)sizeof(jdouble), (int)CodeEntryAlignment); } | |
226 | |
227 csize_t align_at_start(csize_t off) const { return (csize_t) align_size_up(off, alignment()); } | |
228 | |
229 // Mark a section frozen. Assign its remaining space to | |
230 // the following section. It will never expand after this point. | |
231 inline void freeze(); // { _outer->freeze_section(this); } | |
232 | |
233 // Ensure there's enough space left in the current section. | |
234 // Return true if there was an expansion. | |
235 bool maybe_expand_to_ensure_remaining(csize_t amount); | |
236 | |
237 #ifndef PRODUCT | |
238 void decode(); | |
239 void dump(); | |
240 void print(const char* name); | |
241 #endif //PRODUCT | |
242 }; | |
243 | |
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244 class CodeString; |
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245 class CodeStrings VALUE_OBJ_CLASS_SPEC { |
0 | 246 private: |
247 #ifndef PRODUCT | |
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248 CodeString* _strings; |
20435 | 249 #ifdef ASSERT |
250 // Becomes true after copy-out, forbids further use. | |
251 bool _defunct; // Zero bit pattern is "valid", see memset call in decode_env::decode_env | |
252 #endif | |
0 | 253 #endif |
254 | |
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255 CodeString* find(intptr_t offset) const; |
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256 CodeString* find_last(intptr_t offset) const; |
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257 |
20435 | 258 void set_null_and_invalidate() { |
259 #ifndef PRODUCT | |
260 _strings = NULL; | |
261 #ifdef ASSERT | |
262 _defunct = true; | |
263 #endif | |
264 #endif | |
265 } | |
266 | |
0 | 267 public: |
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268 CodeStrings() { |
0 | 269 #ifndef PRODUCT |
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270 _strings = NULL; |
20435 | 271 #ifdef ASSERT |
272 _defunct = false; | |
273 #endif | |
274 #endif | |
275 } | |
276 | |
277 bool is_null() { | |
278 #ifdef ASSERT | |
279 return _strings == NULL; | |
280 #else | |
281 return true; | |
0 | 282 #endif |
283 } | |
284 | |
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285 const char* add_string(const char * string) PRODUCT_RETURN_(return NULL;); |
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286 |
0 | 287 void add_comment(intptr_t offset, const char * comment) PRODUCT_RETURN; |
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288 void print_block_comment(outputStream* stream, intptr_t offset) const PRODUCT_RETURN; |
20435 | 289 // MOVE strings from other to this; invalidate other. |
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290 void assign(CodeStrings& other) PRODUCT_RETURN; |
20435 | 291 // COPY strings from other to this; leave other valid. |
292 void copy(CodeStrings& other) PRODUCT_RETURN; | |
0 | 293 void free() PRODUCT_RETURN; |
20435 | 294 // Guarantee that _strings are used at most once; assign invalidates a buffer. |
295 inline void check_valid() const { | |
296 #ifdef ASSERT | |
297 assert(!_defunct, "Use of invalid CodeStrings"); | |
298 #endif | |
299 } | |
0 | 300 }; |
301 | |
302 // A CodeBuffer describes a memory space into which assembly | |
303 // code is generated. This memory space usually occupies the | |
304 // interior of a single BufferBlob, but in some cases it may be | |
305 // an arbitrary span of memory, even outside the code cache. | |
306 // | |
307 // A code buffer comes in two variants: | |
308 // | |
309 // (1) A CodeBuffer referring to an already allocated piece of memory: | |
310 // This is used to direct 'static' code generation (e.g. for interpreter | |
311 // or stubroutine generation, etc.). This code comes with NO relocation | |
312 // information. | |
313 // | |
314 // (2) A CodeBuffer referring to a piece of memory allocated when the | |
315 // CodeBuffer is allocated. This is used for nmethod generation. | |
316 // | |
317 // The memory can be divided up into several parts called sections. | |
318 // Each section independently accumulates code (or data) an relocations. | |
319 // Sections can grow (at the expense of a reallocation of the BufferBlob | |
320 // and recopying of all active sections). When the buffered code is finally | |
321 // written to an nmethod (or other CodeBlob), the contents (code, data, | |
322 // and relocations) of the sections are padded to an alignment and concatenated. | |
323 // Instructions and data in one section can contain relocatable references to | |
324 // addresses in a sibling section. | |
325 | |
326 class CodeBuffer: public StackObj { | |
327 friend class CodeSection; | |
328 | |
329 private: | |
330 // CodeBuffers must be allocated on the stack except for a single | |
331 // special case during expansion which is handled internally. This | |
332 // is done to guarantee proper cleanup of resources. | |
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333 void* operator new(size_t size) throw() { return ResourceObj::operator new(size); } |
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334 void operator delete(void* p) { ShouldNotCallThis(); } |
0 | 335 |
336 public: | |
337 typedef int csize_t; // code size type; would be size_t except for history | |
338 enum { | |
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339 // Here is the list of all possible sections. The order reflects |
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340 // the final layout. |
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341 SECT_FIRST = 0, |
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342 SECT_CONSTS = SECT_FIRST, // Non-instruction data: Floats, jump tables, etc. |
0 | 343 SECT_INSTS, // Executable instructions. |
344 SECT_STUBS, // Outbound trampolines for supporting call sites. | |
345 SECT_LIMIT, SECT_NONE = -1 | |
346 }; | |
347 | |
348 private: | |
349 enum { | |
350 sect_bits = 2, // assert (SECT_LIMIT <= (1<<sect_bits)) | |
351 sect_mask = (1<<sect_bits)-1 | |
352 }; | |
353 | |
354 const char* _name; | |
355 | |
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356 CodeSection _consts; // constants, jump tables |
0 | 357 CodeSection _insts; // instructions (the main section) |
358 CodeSection _stubs; // stubs (call site support), deopt, exception handling | |
359 | |
360 CodeBuffer* _before_expand; // dead buffer, from before the last expansion | |
361 | |
362 BufferBlob* _blob; // optional buffer in CodeCache for generated code | |
363 address _total_start; // first address of combined memory buffer | |
364 csize_t _total_size; // size in bytes of combined memory buffer | |
365 | |
366 OopRecorder* _oop_recorder; | |
20435 | 367 CodeStrings _code_strings; |
0 | 368 OopRecorder _default_oop_recorder; // override with initialize_oop_recorder |
369 Arena* _overflow_arena; | |
370 | |
371 address _decode_begin; // start address for decode | |
372 address decode_begin(); | |
373 | |
374 void initialize_misc(const char * name) { | |
375 // all pointers other than code_start/end and those inside the sections | |
376 assert(name != NULL, "must have a name"); | |
377 _name = name; | |
378 _before_expand = NULL; | |
379 _blob = NULL; | |
380 _oop_recorder = NULL; | |
381 _decode_begin = NULL; | |
382 _overflow_arena = NULL; | |
383 } | |
384 | |
385 void initialize(address code_start, csize_t code_size) { | |
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386 _consts.initialize_outer(this, SECT_CONSTS); |
0 | 387 _insts.initialize_outer(this, SECT_INSTS); |
388 _stubs.initialize_outer(this, SECT_STUBS); | |
389 _total_start = code_start; | |
390 _total_size = code_size; | |
391 // Initialize the main section: | |
392 _insts.initialize(code_start, code_size); | |
393 assert(!_stubs.is_allocated(), "no garbage here"); | |
394 assert(!_consts.is_allocated(), "no garbage here"); | |
395 _oop_recorder = &_default_oop_recorder; | |
396 } | |
397 | |
398 void initialize_section_size(CodeSection* cs, csize_t size); | |
399 | |
400 void freeze_section(CodeSection* cs); | |
401 | |
402 // helper for CodeBuffer::expand() | |
403 void take_over_code_from(CodeBuffer* cs); | |
404 | |
405 // ensure sections are disjoint, ordered, and contained in the blob | |
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406 void verify_section_allocation(); |
0 | 407 |
408 // copies combined relocations to the blob, returns bytes copied | |
409 // (if target is null, it is a dry run only, just for sizing) | |
410 csize_t copy_relocations_to(CodeBlob* blob) const; | |
411 | |
412 // copies combined code to the blob (assumes relocs are already in there) | |
413 void copy_code_to(CodeBlob* blob); | |
414 | |
415 // moves code sections to new buffer (assumes relocs are already in there) | |
416 void relocate_code_to(CodeBuffer* cb) const; | |
417 | |
418 // set up a model of the final layout of my contents | |
419 void compute_final_layout(CodeBuffer* dest) const; | |
420 | |
421 // Expand the given section so at least 'amount' is remaining. | |
422 // Creates a new, larger BufferBlob, and rewrites the code & relocs. | |
423 void expand(CodeSection* which_cs, csize_t amount); | |
424 | |
425 // Helper for expand. | |
426 csize_t figure_expanded_capacities(CodeSection* which_cs, csize_t amount, csize_t* new_capacity); | |
427 | |
428 public: | |
429 // (1) code buffer referring to pre-allocated instruction memory | |
1748 | 430 CodeBuffer(address code_start, csize_t code_size) { |
431 assert(code_start != NULL, "sanity"); | |
432 initialize_misc("static buffer"); | |
433 initialize(code_start, code_size); | |
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434 verify_section_allocation(); |
1748 | 435 } |
0 | 436 |
1748 | 437 // (2) CodeBuffer referring to pre-allocated CodeBlob. |
438 CodeBuffer(CodeBlob* blob); | |
439 | |
440 // (3) code buffer allocating codeBlob memory for code & relocation | |
0 | 441 // info but with lazy initialization. The name must be something |
442 // informative. | |
443 CodeBuffer(const char* name) { | |
444 initialize_misc(name); | |
445 } | |
446 | |
447 | |
1748 | 448 // (4) code buffer allocating codeBlob memory for code & relocation |
0 | 449 // info. The name must be something informative and code_size must |
450 // include both code and stubs sizes. | |
451 CodeBuffer(const char* name, csize_t code_size, csize_t locs_size) { | |
452 initialize_misc(name); | |
453 initialize(code_size, locs_size); | |
454 } | |
455 | |
456 ~CodeBuffer(); | |
457 | |
1748 | 458 // Initialize a CodeBuffer constructed using constructor 3. Using |
459 // constructor 4 is equivalent to calling constructor 3 and then | |
0 | 460 // calling this method. It's been factored out for convenience of |
461 // construction. | |
462 void initialize(csize_t code_size, csize_t locs_size); | |
463 | |
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464 CodeSection* consts() { return &_consts; } |
0 | 465 CodeSection* insts() { return &_insts; } |
466 CodeSection* stubs() { return &_stubs; } | |
467 | |
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468 // present sections in order; return NULL at end; consts is #0, etc. |
0 | 469 CodeSection* code_section(int n) { |
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470 // This makes the slightly questionable but portable assumption |
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471 // that the various members (_consts, _insts, _stubs, etc.) are |
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472 // adjacent in the layout of CodeBuffer. |
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473 CodeSection* cs = &_consts + n; |
0 | 474 assert(cs->index() == n || !cs->is_allocated(), "sanity"); |
475 return cs; | |
476 } | |
477 const CodeSection* code_section(int n) const { // yucky const stuff | |
478 return ((CodeBuffer*)this)->code_section(n); | |
479 } | |
480 static const char* code_section_name(int n); | |
481 int section_index_of(address addr) const; | |
482 bool contains(address addr) const { | |
483 // handy for debugging | |
484 return section_index_of(addr) > SECT_NONE; | |
485 } | |
486 | |
487 // A stable mapping between 'locators' (small ints) and addresses. | |
488 static int locator_pos(int locator) { return locator >> sect_bits; } | |
489 static int locator_sect(int locator) { return locator & sect_mask; } | |
490 static int locator(int pos, int sect) { return (pos << sect_bits) | sect; } | |
491 int locator(address addr) const; | |
492 address locator_address(int locator) const; | |
493 | |
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494 // Heuristic for pre-packing the taken/not-taken bit of a predicted branch. |
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495 bool is_backward_branch(Label& L); |
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496 |
0 | 497 // Properties |
498 const char* name() const { return _name; } | |
499 CodeBuffer* before_expand() const { return _before_expand; } | |
500 BufferBlob* blob() const { return _blob; } | |
501 void set_blob(BufferBlob* blob); | |
502 void free_blob(); // Free the blob, if we own one. | |
503 | |
504 // Properties relative to the insts section: | |
1748 | 505 address insts_begin() const { return _insts.start(); } |
506 address insts_end() const { return _insts.end(); } | |
507 void set_insts_end(address end) { _insts.set_end(end); } | |
508 address insts_limit() const { return _insts.limit(); } | |
509 address insts_mark() const { return _insts.mark(); } | |
510 void set_insts_mark() { _insts.set_mark(); } | |
511 void clear_insts_mark() { _insts.clear_mark(); } | |
0 | 512 |
513 // is there anything in the buffer other than the current section? | |
1748 | 514 bool is_pure() const { return insts_size() == total_content_size(); } |
0 | 515 |
516 // size in bytes of output so far in the insts sections | |
1748 | 517 csize_t insts_size() const { return _insts.size(); } |
0 | 518 |
1748 | 519 // same as insts_size(), except that it asserts there is no non-code here |
520 csize_t pure_insts_size() const { assert(is_pure(), "no non-code"); | |
521 return insts_size(); } | |
0 | 522 // capacity in bytes of the insts sections |
1748 | 523 csize_t insts_capacity() const { return _insts.capacity(); } |
0 | 524 |
525 // number of bytes remaining in the insts section | |
1748 | 526 csize_t insts_remaining() const { return _insts.remaining(); } |
0 | 527 |
528 // is a given address in the insts section? (2nd version is end-inclusive) | |
1748 | 529 bool insts_contains(address pc) const { return _insts.contains(pc); } |
530 bool insts_contains2(address pc) const { return _insts.contains2(pc); } | |
0 | 531 |
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532 // Record any extra oops required to keep embedded metadata alive |
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533 void finalize_oop_references(methodHandle method); |
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534 |
1748 | 535 // Allocated size in all sections, when aligned and concatenated |
536 // (this is the eventual state of the content in its final | |
537 // CodeBlob). | |
538 csize_t total_content_size() const; | |
0 | 539 |
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540 // Combined offset (relative to start of first section) of given |
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541 // section, as eventually found in the final CodeBlob. |
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542 csize_t total_offset_of(CodeSection* cs) const; |
0 | 543 |
544 // allocated size of all relocation data, including index, rounded up | |
545 csize_t total_relocation_size() const; | |
546 | |
547 // allocated size of any and all recorded oops | |
548 csize_t total_oop_size() const { | |
549 OopRecorder* recorder = oop_recorder(); | |
550 return (recorder == NULL)? 0: recorder->oop_size(); | |
551 } | |
552 | |
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553 // allocated size of any and all recorded metadata |
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554 csize_t total_metadata_size() const { |
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555 OopRecorder* recorder = oop_recorder(); |
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556 return (recorder == NULL)? 0: recorder->metadata_size(); |
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557 } |
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558 |
0 | 559 // Configuration functions, called immediately after the CB is constructed. |
560 // The section sizes are subtracted from the original insts section. | |
561 // Note: Call them in reverse section order, because each steals from insts. | |
562 void initialize_consts_size(csize_t size) { initialize_section_size(&_consts, size); } | |
563 void initialize_stubs_size(csize_t size) { initialize_section_size(&_stubs, size); } | |
564 // Override default oop recorder. | |
565 void initialize_oop_recorder(OopRecorder* r); | |
566 | |
567 OopRecorder* oop_recorder() const { return _oop_recorder; } | |
20435 | 568 CodeStrings& strings() { return _code_strings; } |
569 | |
570 void free_strings() { | |
571 if (!_code_strings.is_null()) { | |
572 _code_strings.free(); // sets _strings Null as a side-effect. | |
573 } | |
574 } | |
0 | 575 |
576 // Code generation | |
577 void relocate(address at, RelocationHolder const& rspec, int format = 0) { | |
578 _insts.relocate(at, rspec, format); | |
579 } | |
580 void relocate(address at, relocInfo::relocType rtype, int format = 0) { | |
581 _insts.relocate(at, rtype, format); | |
582 } | |
583 | |
584 // Management of overflow storage for binding of Labels. | |
585 GrowableArray<int>* create_patch_overflow(); | |
586 | |
587 // NMethod generation | |
588 void copy_code_and_locs_to(CodeBlob* blob) { | |
589 assert(blob != NULL, "sane"); | |
590 copy_relocations_to(blob); | |
591 copy_code_to(blob); | |
592 } | |
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593 void copy_values_to(nmethod* nm) { |
0 | 594 if (!oop_recorder()->is_unused()) { |
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595 oop_recorder()->copy_values_to(nm); |
0 | 596 } |
597 } | |
598 | |
599 // Transform an address from the code in this code buffer to a specified code buffer | |
600 address transform_address(const CodeBuffer &cb, address addr) const; | |
601 | |
602 void block_comment(intptr_t offset, const char * comment) PRODUCT_RETURN; | |
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603 const char* code_string(const char* str) PRODUCT_RETURN_(return NULL;); |
0 | 604 |
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605 // Log a little info about section usage in the CodeBuffer |
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606 void log_section_sizes(const char* name); |
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607 |
0 | 608 #ifndef PRODUCT |
609 public: | |
610 // Printing / Decoding | |
611 // decodes from decode_begin() to code_end() and sets decode_begin to end | |
612 void decode(); | |
613 void decode_all(); // decodes all the code | |
614 void skip_decode(); // sets decode_begin to code_end(); | |
615 void print(); | |
616 #endif | |
617 | |
618 | |
619 // The following header contains architecture-specific implementations | |
1972 | 620 #ifdef TARGET_ARCH_x86 |
621 # include "codeBuffer_x86.hpp" | |
622 #endif | |
623 #ifdef TARGET_ARCH_sparc | |
624 # include "codeBuffer_sparc.hpp" | |
625 #endif | |
626 #ifdef TARGET_ARCH_zero | |
627 # include "codeBuffer_zero.hpp" | |
628 #endif | |
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629 #ifdef TARGET_ARCH_arm |
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630 # include "codeBuffer_arm.hpp" |
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631 #endif |
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632 #ifdef TARGET_ARCH_ppc |
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633 # include "codeBuffer_ppc.hpp" |
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634 #endif |
1972 | 635 |
0 | 636 }; |
637 | |
638 | |
639 inline void CodeSection::freeze() { | |
640 _outer->freeze_section(this); | |
641 } | |
642 | |
643 inline bool CodeSection::maybe_expand_to_ensure_remaining(csize_t amount) { | |
644 if (remaining() < amount) { _outer->expand(this, amount); return true; } | |
645 return false; | |
646 } | |
1972 | 647 |
648 #endif // SHARE_VM_ASM_CODEBUFFER_HPP |