Mercurial > hg > truffle
annotate src/share/vm/asm/codeBuffer.cpp @ 7287:76c9023ed438
Remove now useless prefix arguments for jtt unittests
author | Gilles Duboscq <duboscq@ssw.jku.at> |
---|---|
date | Thu, 20 Dec 2012 17:06:59 +0100 |
parents | 291ffc492eb6 |
children | 989155e2d07a |
rev | line source |
---|---|
0 | 1 /* |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6197
diff
changeset
|
2 * Copyright (c) 1997, 2012, 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:
579
diff
changeset
|
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
trims
parents:
579
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:
579
diff
changeset
|
21 * questions. |
0 | 22 * |
23 */ | |
24 | |
1972 | 25 #include "precompiled.hpp" |
26 #include "asm/codeBuffer.hpp" | |
27 #include "compiler/disassembler.hpp" | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6197
diff
changeset
|
28 #include "memory/gcLocker.hpp" |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6197
diff
changeset
|
29 #include "oops/methodData.hpp" |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6197
diff
changeset
|
30 #include "oops/oop.inline.hpp" |
1972 | 31 #include "utilities/copy.hpp" |
4059
44ce519bc3d1
7104960: JSR 292: +VerifyMethodHandles in product JVM can overflow buffer
never
parents:
4040
diff
changeset
|
32 #include "utilities/xmlstream.hpp" |
0 | 33 |
34 // The structure of a CodeSection: | |
35 // | |
36 // _start -> +----------------+ | |
37 // | machine code...| | |
38 // _end -> |----------------| | |
39 // | | | |
40 // | (empty) | | |
41 // | | | |
42 // | | | |
43 // +----------------+ | |
44 // _limit -> | | | |
45 // | |
46 // _locs_start -> +----------------+ | |
47 // |reloc records...| | |
48 // |----------------| | |
49 // _locs_end -> | | | |
50 // | | | |
51 // | (empty) | | |
52 // | | | |
53 // | | | |
54 // +----------------+ | |
55 // _locs_limit -> | | | |
56 // The _end (resp. _limit) pointer refers to the first | |
57 // unused (resp. unallocated) byte. | |
58 | |
59 // The structure of the CodeBuffer while code is being accumulated: | |
60 // | |
61 // _total_start -> \ | |
62 // _insts._start -> +----------------+ | |
63 // | | | |
64 // | Code | | |
65 // | | | |
66 // _stubs._start -> |----------------| | |
67 // | | | |
68 // | Stubs | (also handlers for deopt/exception) | |
69 // | | | |
70 // _consts._start -> |----------------| | |
71 // | | | |
72 // | Constants | | |
73 // | | | |
74 // +----------------+ | |
75 // + _total_size -> | | | |
76 // | |
77 // When the code and relocations are copied to the code cache, | |
78 // the empty parts of each section are removed, and everything | |
79 // is copied into contiguous locations. | |
80 | |
81 typedef CodeBuffer::csize_t csize_t; // file-local definition | |
82 | |
1748 | 83 // External buffer, in a predefined CodeBlob. |
0 | 84 // Important: The code_start must be taken exactly, and not realigned. |
1748 | 85 CodeBuffer::CodeBuffer(CodeBlob* blob) { |
0 | 86 initialize_misc("static buffer"); |
1748 | 87 initialize(blob->content_begin(), blob->content_size()); |
4059
44ce519bc3d1
7104960: JSR 292: +VerifyMethodHandles in product JVM can overflow buffer
never
parents:
4040
diff
changeset
|
88 verify_section_allocation(); |
0 | 89 } |
90 | |
91 void CodeBuffer::initialize(csize_t code_size, csize_t locs_size) { | |
92 // Compute maximal alignment. | |
93 int align = _insts.alignment(); | |
94 // Always allow for empty slop around each section. | |
95 int slop = (int) CodeSection::end_slop(); | |
96 | |
97 assert(blob() == NULL, "only once"); | |
98 set_blob(BufferBlob::create(_name, code_size + (align+slop) * (SECT_LIMIT+1))); | |
99 if (blob() == NULL) { | |
100 // The assembler constructor will throw a fatal on an empty CodeBuffer. | |
101 return; // caller must test this | |
102 } | |
103 | |
104 // Set up various pointers into the blob. | |
105 initialize(_total_start, _total_size); | |
106 | |
1748 | 107 assert((uintptr_t)insts_begin() % CodeEntryAlignment == 0, "instruction start not code entry aligned"); |
0 | 108 |
109 pd_initialize(); | |
110 | |
111 if (locs_size != 0) { | |
112 _insts.initialize_locs(locs_size / sizeof(relocInfo)); | |
113 } | |
114 | |
4059
44ce519bc3d1
7104960: JSR 292: +VerifyMethodHandles in product JVM can overflow buffer
never
parents:
4040
diff
changeset
|
115 verify_section_allocation(); |
0 | 116 } |
117 | |
118 | |
119 CodeBuffer::~CodeBuffer() { | |
4059
44ce519bc3d1
7104960: JSR 292: +VerifyMethodHandles in product JVM can overflow buffer
never
parents:
4040
diff
changeset
|
120 verify_section_allocation(); |
44ce519bc3d1
7104960: JSR 292: +VerifyMethodHandles in product JVM can overflow buffer
never
parents:
4040
diff
changeset
|
121 |
0 | 122 // If we allocate our code buffer from the CodeCache |
123 // via a BufferBlob, and it's not permanent, then | |
124 // free the BufferBlob. | |
125 // The rest of the memory will be freed when the ResourceObj | |
126 // is released. | |
127 for (CodeBuffer* cb = this; cb != NULL; cb = cb->before_expand()) { | |
128 // Previous incarnations of this buffer are held live, so that internal | |
129 // addresses constructed before expansions will not be confused. | |
130 cb->free_blob(); | |
131 } | |
561
5bfdb08ea692
6782260: Memory leak in CodeBuffer::create_patch_overflow
never
parents:
196
diff
changeset
|
132 |
5bfdb08ea692
6782260: Memory leak in CodeBuffer::create_patch_overflow
never
parents:
196
diff
changeset
|
133 // free any overflow storage |
5bfdb08ea692
6782260: Memory leak in CodeBuffer::create_patch_overflow
never
parents:
196
diff
changeset
|
134 delete _overflow_arena; |
5bfdb08ea692
6782260: Memory leak in CodeBuffer::create_patch_overflow
never
parents:
196
diff
changeset
|
135 |
0 | 136 #ifdef ASSERT |
1685 | 137 // Save allocation type to execute assert in ~ResourceObj() |
138 // which is called after this destructor. | |
2015
79d8657be916
6993125: runThese crashes with assert(Thread::current()->on_local_stack((address)this))
kvn
parents:
1972
diff
changeset
|
139 assert(_default_oop_recorder.allocated_on_stack(), "should be embedded object"); |
1685 | 140 ResourceObj::allocation_type at = _default_oop_recorder.get_allocation_type(); |
0 | 141 Copy::fill_to_bytes(this, sizeof(*this), badResourceValue); |
1685 | 142 ResourceObj::set_allocation_type((address)(&_default_oop_recorder), at); |
0 | 143 #endif |
144 } | |
145 | |
146 void CodeBuffer::initialize_oop_recorder(OopRecorder* r) { | |
147 assert(_oop_recorder == &_default_oop_recorder && _default_oop_recorder.is_unused(), "do this once"); | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6197
diff
changeset
|
148 DEBUG_ONLY(_default_oop_recorder.freeze()); // force unused OR to be frozen |
0 | 149 _oop_recorder = r; |
150 } | |
151 | |
152 void CodeBuffer::initialize_section_size(CodeSection* cs, csize_t size) { | |
153 assert(cs != &_insts, "insts is the memory provider, not the consumer"); | |
154 csize_t slop = CodeSection::end_slop(); // margin between sections | |
155 int align = cs->alignment(); | |
156 assert(is_power_of_2(align), "sanity"); | |
157 address start = _insts._start; | |
158 address limit = _insts._limit; | |
159 address middle = limit - size; | |
160 middle -= (intptr_t)middle & (align-1); // align the division point downward | |
161 guarantee(middle - slop > start, "need enough space to divide up"); | |
162 _insts._limit = middle - slop; // subtract desired space, plus slop | |
163 cs->initialize(middle, limit - middle); | |
164 assert(cs->start() == middle, "sanity"); | |
165 assert(cs->limit() == limit, "sanity"); | |
166 // give it some relocations to start with, if the main section has them | |
167 if (_insts.has_locs()) cs->initialize_locs(1); | |
168 } | |
169 | |
170 void CodeBuffer::freeze_section(CodeSection* cs) { | |
171 CodeSection* next_cs = (cs == consts())? NULL: code_section(cs->index()+1); | |
172 csize_t frozen_size = cs->size(); | |
173 if (next_cs != NULL) { | |
174 frozen_size = next_cs->align_at_start(frozen_size); | |
175 } | |
176 address old_limit = cs->limit(); | |
177 address new_limit = cs->start() + frozen_size; | |
178 relocInfo* old_locs_limit = cs->locs_limit(); | |
179 relocInfo* new_locs_limit = cs->locs_end(); | |
180 // Patch the limits. | |
181 cs->_limit = new_limit; | |
182 cs->_locs_limit = new_locs_limit; | |
183 cs->_frozen = true; | |
184 if (!next_cs->is_allocated() && !next_cs->is_frozen()) { | |
185 // Give remaining buffer space to the following section. | |
186 next_cs->initialize(new_limit, old_limit - new_limit); | |
187 next_cs->initialize_shared_locs(new_locs_limit, | |
188 old_locs_limit - new_locs_limit); | |
189 } | |
190 } | |
191 | |
192 void CodeBuffer::set_blob(BufferBlob* blob) { | |
193 _blob = blob; | |
194 if (blob != NULL) { | |
1748 | 195 address start = blob->content_begin(); |
196 address end = blob->content_end(); | |
0 | 197 // Round up the starting address. |
198 int align = _insts.alignment(); | |
199 start += (-(intptr_t)start) & (align-1); | |
200 _total_start = start; | |
201 _total_size = end - start; | |
202 } else { | |
1762
0878d7bae69f
6961697: move nmethod constants section before instruction section
twisti
parents:
1748
diff
changeset
|
203 #ifdef ASSERT |
0 | 204 // Clean out dangling pointers. |
205 _total_start = badAddress; | |
1762
0878d7bae69f
6961697: move nmethod constants section before instruction section
twisti
parents:
1748
diff
changeset
|
206 _consts._start = _consts._end = badAddress; |
0 | 207 _insts._start = _insts._end = badAddress; |
208 _stubs._start = _stubs._end = badAddress; | |
1762
0878d7bae69f
6961697: move nmethod constants section before instruction section
twisti
parents:
1748
diff
changeset
|
209 #endif //ASSERT |
0 | 210 } |
211 } | |
212 | |
213 void CodeBuffer::free_blob() { | |
214 if (_blob != NULL) { | |
215 BufferBlob::free(_blob); | |
216 set_blob(NULL); | |
217 } | |
218 } | |
219 | |
220 const char* CodeBuffer::code_section_name(int n) { | |
221 #ifdef PRODUCT | |
222 return NULL; | |
223 #else //PRODUCT | |
224 switch (n) { | |
1762
0878d7bae69f
6961697: move nmethod constants section before instruction section
twisti
parents:
1748
diff
changeset
|
225 case SECT_CONSTS: return "consts"; |
0 | 226 case SECT_INSTS: return "insts"; |
227 case SECT_STUBS: return "stubs"; | |
228 default: return NULL; | |
229 } | |
230 #endif //PRODUCT | |
231 } | |
232 | |
233 int CodeBuffer::section_index_of(address addr) const { | |
234 for (int n = 0; n < (int)SECT_LIMIT; n++) { | |
235 const CodeSection* cs = code_section(n); | |
236 if (cs->allocates(addr)) return n; | |
237 } | |
238 return SECT_NONE; | |
239 } | |
240 | |
241 int CodeBuffer::locator(address addr) const { | |
242 for (int n = 0; n < (int)SECT_LIMIT; n++) { | |
243 const CodeSection* cs = code_section(n); | |
244 if (cs->allocates(addr)) { | |
245 return locator(addr - cs->start(), n); | |
246 } | |
247 } | |
248 return -1; | |
249 } | |
250 | |
251 address CodeBuffer::locator_address(int locator) const { | |
252 if (locator < 0) return NULL; | |
253 address start = code_section(locator_sect(locator))->start(); | |
254 return start + locator_pos(locator); | |
255 } | |
256 | |
7199
cd3d6a6b95d9
8003240: x86: move MacroAssembler into separate file
twisti
parents:
7197
diff
changeset
|
257 bool CodeBuffer::is_backward_branch(Label& L) { |
cd3d6a6b95d9
8003240: x86: move MacroAssembler into separate file
twisti
parents:
7197
diff
changeset
|
258 return L.is_bound() && insts_end() <= locator_address(L.loc()); |
cd3d6a6b95d9
8003240: x86: move MacroAssembler into separate file
twisti
parents:
7197
diff
changeset
|
259 } |
cd3d6a6b95d9
8003240: x86: move MacroAssembler into separate file
twisti
parents:
7197
diff
changeset
|
260 |
0 | 261 address CodeBuffer::decode_begin() { |
262 address begin = _insts.start(); | |
263 if (_decode_begin != NULL && _decode_begin > begin) | |
264 begin = _decode_begin; | |
265 return begin; | |
266 } | |
267 | |
268 | |
269 GrowableArray<int>* CodeBuffer::create_patch_overflow() { | |
270 if (_overflow_arena == NULL) { | |
6197 | 271 _overflow_arena = new (mtCode) Arena(); |
0 | 272 } |
273 return new (_overflow_arena) GrowableArray<int>(_overflow_arena, 8, 0, 0); | |
274 } | |
275 | |
276 | |
277 // Helper function for managing labels and their target addresses. | |
278 // Returns a sensible address, and if it is not the label's final | |
279 // address, notes the dependency (at 'branch_pc') on the label. | |
280 address CodeSection::target(Label& L, address branch_pc) { | |
281 if (L.is_bound()) { | |
282 int loc = L.loc(); | |
283 if (index() == CodeBuffer::locator_sect(loc)) { | |
284 return start() + CodeBuffer::locator_pos(loc); | |
285 } else { | |
286 return outer()->locator_address(loc); | |
287 } | |
288 } else { | |
289 assert(allocates2(branch_pc), "sanity"); | |
290 address base = start(); | |
291 int patch_loc = CodeBuffer::locator(branch_pc - base, index()); | |
292 L.add_patch_at(outer(), patch_loc); | |
293 | |
294 // Need to return a pc, doesn't matter what it is since it will be | |
295 // replaced during resolution later. | |
113
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
100
diff
changeset
|
296 // Don't return NULL or badAddress, since branches shouldn't overflow. |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
100
diff
changeset
|
297 // Don't return base either because that could overflow displacements |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
100
diff
changeset
|
298 // for shorter branches. It will get checked when bound. |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
100
diff
changeset
|
299 return branch_pc; |
0 | 300 } |
301 } | |
302 | |
303 void CodeSection::relocate(address at, RelocationHolder const& spec, int format) { | |
304 Relocation* reloc = spec.reloc(); | |
305 relocInfo::relocType rtype = (relocInfo::relocType) reloc->type(); | |
306 if (rtype == relocInfo::none) return; | |
307 | |
308 // The assertion below has been adjusted, to also work for | |
309 // relocation for fixup. Sometimes we want to put relocation | |
310 // information for the next instruction, since it will be patched | |
311 // with a call. | |
312 assert(start() <= at && at <= end()+1, | |
313 "cannot relocate data outside code boundaries"); | |
314 | |
315 if (!has_locs()) { | |
316 // no space for relocation information provided => code cannot be | |
317 // relocated. Make sure that relocate is only called with rtypes | |
318 // that can be ignored for this kind of code. | |
319 assert(rtype == relocInfo::none || | |
320 rtype == relocInfo::runtime_call_type || | |
321 rtype == relocInfo::internal_word_type|| | |
322 rtype == relocInfo::section_word_type || | |
323 rtype == relocInfo::external_word_type, | |
324 "code needs relocation information"); | |
325 // leave behind an indication that we attempted a relocation | |
326 DEBUG_ONLY(_locs_start = _locs_limit = (relocInfo*)badAddress); | |
327 return; | |
328 } | |
329 | |
330 // Advance the point, noting the offset we'll have to record. | |
331 csize_t offset = at - locs_point(); | |
332 set_locs_point(at); | |
333 | |
334 // Test for a couple of overflow conditions; maybe expand the buffer. | |
335 relocInfo* end = locs_end(); | |
336 relocInfo* req = end + relocInfo::length_limit; | |
337 // Check for (potential) overflow | |
338 if (req >= locs_limit() || offset >= relocInfo::offset_limit()) { | |
339 req += (uint)offset / (uint)relocInfo::offset_limit(); | |
340 if (req >= locs_limit()) { | |
341 // Allocate or reallocate. | |
342 expand_locs(locs_count() + (req - end)); | |
343 // reload pointer | |
344 end = locs_end(); | |
345 } | |
346 } | |
347 | |
348 // If the offset is giant, emit filler relocs, of type 'none', but | |
349 // each carrying the largest possible offset, to advance the locs_point. | |
350 while (offset >= relocInfo::offset_limit()) { | |
351 assert(end < locs_limit(), "adjust previous paragraph of code"); | |
352 *end++ = filler_relocInfo(); | |
353 offset -= filler_relocInfo().addr_offset(); | |
354 } | |
355 | |
356 // If it's a simple reloc with no data, we'll just write (rtype | offset). | |
357 (*end) = relocInfo(rtype, offset, format); | |
358 | |
359 // If it has data, insert the prefix, as (data_prefix_tag | data1), data2. | |
360 end->initialize(this, reloc); | |
361 } | |
362 | |
363 void CodeSection::initialize_locs(int locs_capacity) { | |
364 assert(_locs_start == NULL, "only one locs init step, please"); | |
365 // Apply a priori lower limits to relocation size: | |
366 csize_t min_locs = MAX2(size() / 16, (csize_t)4); | |
367 if (locs_capacity < min_locs) locs_capacity = min_locs; | |
368 relocInfo* locs_start = NEW_RESOURCE_ARRAY(relocInfo, locs_capacity); | |
369 _locs_start = locs_start; | |
370 _locs_end = locs_start; | |
371 _locs_limit = locs_start + locs_capacity; | |
372 _locs_own = true; | |
373 } | |
374 | |
375 void CodeSection::initialize_shared_locs(relocInfo* buf, int length) { | |
376 assert(_locs_start == NULL, "do this before locs are allocated"); | |
377 // Internal invariant: locs buf must be fully aligned. | |
378 // See copy_relocations_to() below. | |
379 while ((uintptr_t)buf % HeapWordSize != 0 && length > 0) { | |
380 ++buf; --length; | |
381 } | |
382 if (length > 0) { | |
383 _locs_start = buf; | |
384 _locs_end = buf; | |
385 _locs_limit = buf + length; | |
386 _locs_own = false; | |
387 } | |
388 } | |
389 | |
390 void CodeSection::initialize_locs_from(const CodeSection* source_cs) { | |
391 int lcount = source_cs->locs_count(); | |
392 if (lcount != 0) { | |
393 initialize_shared_locs(source_cs->locs_start(), lcount); | |
394 _locs_end = _locs_limit = _locs_start + lcount; | |
395 assert(is_allocated(), "must have copied code already"); | |
396 set_locs_point(start() + source_cs->locs_point_off()); | |
397 } | |
398 assert(this->locs_count() == source_cs->locs_count(), "sanity"); | |
399 } | |
400 | |
401 void CodeSection::expand_locs(int new_capacity) { | |
402 if (_locs_start == NULL) { | |
403 initialize_locs(new_capacity); | |
404 return; | |
405 } else { | |
406 int old_count = locs_count(); | |
407 int old_capacity = locs_capacity(); | |
408 if (new_capacity < old_capacity * 2) | |
409 new_capacity = old_capacity * 2; | |
410 relocInfo* locs_start; | |
411 if (_locs_own) { | |
412 locs_start = REALLOC_RESOURCE_ARRAY(relocInfo, _locs_start, old_capacity, new_capacity); | |
413 } else { | |
414 locs_start = NEW_RESOURCE_ARRAY(relocInfo, new_capacity); | |
1603
d93949c5bdcc
6730276: JDI_REGRESSION tests fail with "Error: count must be non-zero" error on x86
kvn
parents:
1552
diff
changeset
|
415 Copy::conjoint_jbytes(_locs_start, locs_start, old_capacity * sizeof(relocInfo)); |
0 | 416 _locs_own = true; |
417 } | |
418 _locs_start = locs_start; | |
419 _locs_end = locs_start + old_count; | |
420 _locs_limit = locs_start + new_capacity; | |
421 } | |
422 } | |
423 | |
424 | |
425 /// Support for emitting the code to its final location. | |
426 /// The pattern is the same for all functions. | |
427 /// We iterate over all the sections, padding each to alignment. | |
428 | |
1748 | 429 csize_t CodeBuffer::total_content_size() const { |
430 csize_t size_so_far = 0; | |
0 | 431 for (int n = 0; n < (int)SECT_LIMIT; n++) { |
432 const CodeSection* cs = code_section(n); | |
433 if (cs->is_empty()) continue; // skip trivial section | |
1748 | 434 size_so_far = cs->align_at_start(size_so_far); |
435 size_so_far += cs->size(); | |
0 | 436 } |
1748 | 437 return size_so_far; |
0 | 438 } |
439 | |
440 void CodeBuffer::compute_final_layout(CodeBuffer* dest) const { | |
441 address buf = dest->_total_start; | |
442 csize_t buf_offset = 0; | |
1748 | 443 assert(dest->_total_size >= total_content_size(), "must be big enough"); |
0 | 444 |
445 { | |
446 // not sure why this is here, but why not... | |
447 int alignSize = MAX2((intx) sizeof(jdouble), CodeEntryAlignment); | |
448 assert( (dest->_total_start - _insts.start()) % alignSize == 0, "copy must preserve alignment"); | |
449 } | |
450 | |
451 const CodeSection* prev_cs = NULL; | |
452 CodeSection* prev_dest_cs = NULL; | |
1762
0878d7bae69f
6961697: move nmethod constants section before instruction section
twisti
parents:
1748
diff
changeset
|
453 |
0878d7bae69f
6961697: move nmethod constants section before instruction section
twisti
parents:
1748
diff
changeset
|
454 for (int n = (int) SECT_FIRST; n < (int) SECT_LIMIT; n++) { |
0 | 455 // figure compact layout of each section |
456 const CodeSection* cs = code_section(n); | |
1762
0878d7bae69f
6961697: move nmethod constants section before instruction section
twisti
parents:
1748
diff
changeset
|
457 csize_t csize = cs->size(); |
0 | 458 |
459 CodeSection* dest_cs = dest->code_section(n); | |
460 if (!cs->is_empty()) { | |
461 // Compute initial padding; assign it to the previous non-empty guy. | |
462 // Cf. figure_expanded_capacities. | |
463 csize_t padding = cs->align_at_start(buf_offset) - buf_offset; | |
464 if (padding != 0) { | |
465 buf_offset += padding; | |
466 assert(prev_dest_cs != NULL, "sanity"); | |
467 prev_dest_cs->_limit += padding; | |
468 } | |
469 #ifdef ASSERT | |
1762
0878d7bae69f
6961697: move nmethod constants section before instruction section
twisti
parents:
1748
diff
changeset
|
470 if (prev_cs != NULL && prev_cs->is_frozen() && n < (SECT_LIMIT - 1)) { |
0 | 471 // Make sure the ends still match up. |
472 // This is important because a branch in a frozen section | |
473 // might target code in a following section, via a Label, | |
474 // and without a relocation record. See Label::patch_instructions. | |
475 address dest_start = buf+buf_offset; | |
476 csize_t start2start = cs->start() - prev_cs->start(); | |
477 csize_t dest_start2start = dest_start - prev_dest_cs->start(); | |
478 assert(start2start == dest_start2start, "cannot stretch frozen sect"); | |
479 } | |
480 #endif //ASSERT | |
481 prev_dest_cs = dest_cs; | |
482 prev_cs = cs; | |
483 } | |
484 | |
485 debug_only(dest_cs->_start = NULL); // defeat double-initialization assert | |
486 dest_cs->initialize(buf+buf_offset, csize); | |
487 dest_cs->set_end(buf+buf_offset+csize); | |
488 assert(dest_cs->is_allocated(), "must always be allocated"); | |
489 assert(cs->is_empty() == dest_cs->is_empty(), "sanity"); | |
490 | |
491 buf_offset += csize; | |
492 } | |
493 | |
494 // Done calculating sections; did it come out to the right end? | |
1748 | 495 assert(buf_offset == total_content_size(), "sanity"); |
4059
44ce519bc3d1
7104960: JSR 292: +VerifyMethodHandles in product JVM can overflow buffer
never
parents:
4040
diff
changeset
|
496 dest->verify_section_allocation(); |
0 | 497 } |
498 | |
7185
90273fc0a981
8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap
coleenp
parents:
6926
diff
changeset
|
499 // Anonymous classes need mirror to keep the metadata alive but |
90273fc0a981
8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap
coleenp
parents:
6926
diff
changeset
|
500 // for regular classes, the class_loader is sufficient. |
90273fc0a981
8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap
coleenp
parents:
6926
diff
changeset
|
501 static void append_oop_references(GrowableArray<oop>* oops, Klass* k) { |
90273fc0a981
8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap
coleenp
parents:
6926
diff
changeset
|
502 if (k->oop_is_instance()) { |
90273fc0a981
8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap
coleenp
parents:
6926
diff
changeset
|
503 InstanceKlass* ik = InstanceKlass::cast(k); |
90273fc0a981
8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap
coleenp
parents:
6926
diff
changeset
|
504 if (ik->is_anonymous()) { |
90273fc0a981
8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap
coleenp
parents:
6926
diff
changeset
|
505 oop o = ik->java_mirror(); |
90273fc0a981
8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap
coleenp
parents:
6926
diff
changeset
|
506 assert (o != NULL, "should have a mirror"); |
90273fc0a981
8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap
coleenp
parents:
6926
diff
changeset
|
507 if (!oops->contains(o)) { |
90273fc0a981
8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap
coleenp
parents:
6926
diff
changeset
|
508 oops->append(o); |
90273fc0a981
8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap
coleenp
parents:
6926
diff
changeset
|
509 } |
90273fc0a981
8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap
coleenp
parents:
6926
diff
changeset
|
510 return; // only need the mirror |
90273fc0a981
8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap
coleenp
parents:
6926
diff
changeset
|
511 } |
90273fc0a981
8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap
coleenp
parents:
6926
diff
changeset
|
512 } |
90273fc0a981
8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap
coleenp
parents:
6926
diff
changeset
|
513 oop cl = k->class_loader(); |
90273fc0a981
8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap
coleenp
parents:
6926
diff
changeset
|
514 if (cl != NULL && !oops->contains(cl)) { |
90273fc0a981
8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap
coleenp
parents:
6926
diff
changeset
|
515 oops->append(cl); |
90273fc0a981
8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap
coleenp
parents:
6926
diff
changeset
|
516 } |
90273fc0a981
8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap
coleenp
parents:
6926
diff
changeset
|
517 } |
90273fc0a981
8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap
coleenp
parents:
6926
diff
changeset
|
518 |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6197
diff
changeset
|
519 void CodeBuffer::finalize_oop_references(methodHandle mh) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6197
diff
changeset
|
520 No_Safepoint_Verifier nsv; |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6197
diff
changeset
|
521 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6197
diff
changeset
|
522 GrowableArray<oop> oops; |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6197
diff
changeset
|
523 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6197
diff
changeset
|
524 // Make sure that immediate metadata records something in the OopRecorder |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6197
diff
changeset
|
525 for (int n = (int) SECT_FIRST; n < (int) SECT_LIMIT; n++) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6197
diff
changeset
|
526 // pull code out of each section |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6197
diff
changeset
|
527 CodeSection* cs = code_section(n); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6197
diff
changeset
|
528 if (cs->is_empty()) continue; // skip trivial section |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6197
diff
changeset
|
529 RelocIterator iter(cs); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6197
diff
changeset
|
530 while (iter.next()) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6197
diff
changeset
|
531 if (iter.type() == relocInfo::metadata_type) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6197
diff
changeset
|
532 metadata_Relocation* md = iter.metadata_reloc(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6197
diff
changeset
|
533 if (md->metadata_is_immediate()) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6197
diff
changeset
|
534 Metadata* m = md->metadata_value(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6197
diff
changeset
|
535 if (oop_recorder()->is_real(m)) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6197
diff
changeset
|
536 if (m->is_methodData()) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6197
diff
changeset
|
537 m = ((MethodData*)m)->method(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6197
diff
changeset
|
538 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6197
diff
changeset
|
539 if (m->is_method()) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6197
diff
changeset
|
540 m = ((Method*)m)->method_holder(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6197
diff
changeset
|
541 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6197
diff
changeset
|
542 if (m->is_klass()) { |
7185
90273fc0a981
8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap
coleenp
parents:
6926
diff
changeset
|
543 append_oop_references(&oops, (Klass*)m); |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6197
diff
changeset
|
544 } else { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6197
diff
changeset
|
545 // XXX This will currently occur for MDO which don't |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6197
diff
changeset
|
546 // have a backpointer. This has to be fixed later. |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6197
diff
changeset
|
547 m->print(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6197
diff
changeset
|
548 ShouldNotReachHere(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6197
diff
changeset
|
549 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6197
diff
changeset
|
550 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6197
diff
changeset
|
551 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6197
diff
changeset
|
552 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6197
diff
changeset
|
553 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6197
diff
changeset
|
554 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6197
diff
changeset
|
555 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6197
diff
changeset
|
556 if (!oop_recorder()->is_unused()) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6197
diff
changeset
|
557 for (int i = 0; i < oop_recorder()->metadata_count(); i++) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6197
diff
changeset
|
558 Metadata* m = oop_recorder()->metadata_at(i); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6197
diff
changeset
|
559 if (oop_recorder()->is_real(m)) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6197
diff
changeset
|
560 if (m->is_methodData()) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6197
diff
changeset
|
561 m = ((MethodData*)m)->method(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6197
diff
changeset
|
562 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6197
diff
changeset
|
563 if (m->is_method()) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6197
diff
changeset
|
564 m = ((Method*)m)->method_holder(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6197
diff
changeset
|
565 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6197
diff
changeset
|
566 if (m->is_klass()) { |
7185
90273fc0a981
8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap
coleenp
parents:
6926
diff
changeset
|
567 append_oop_references(&oops, (Klass*)m); |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6197
diff
changeset
|
568 } else { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6197
diff
changeset
|
569 m->print(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6197
diff
changeset
|
570 ShouldNotReachHere(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6197
diff
changeset
|
571 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6197
diff
changeset
|
572 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6197
diff
changeset
|
573 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6197
diff
changeset
|
574 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6197
diff
changeset
|
575 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6197
diff
changeset
|
576 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6197
diff
changeset
|
577 // Add the class loader of Method* for the nmethod itself |
7185
90273fc0a981
8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap
coleenp
parents:
6926
diff
changeset
|
578 append_oop_references(&oops, mh->method_holder()); |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6197
diff
changeset
|
579 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6197
diff
changeset
|
580 // Add any oops that we've found |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6197
diff
changeset
|
581 Thread* thread = Thread::current(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6197
diff
changeset
|
582 for (int i = 0; i < oops.length(); i++) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6197
diff
changeset
|
583 oop_recorder()->find_index((jobject)thread->handle_area()->allocate_handle(oops.at(i))); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6197
diff
changeset
|
584 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6197
diff
changeset
|
585 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6197
diff
changeset
|
586 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6197
diff
changeset
|
587 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6197
diff
changeset
|
588 |
1762
0878d7bae69f
6961697: move nmethod constants section before instruction section
twisti
parents:
1748
diff
changeset
|
589 csize_t CodeBuffer::total_offset_of(CodeSection* cs) const { |
0878d7bae69f
6961697: move nmethod constants section before instruction section
twisti
parents:
1748
diff
changeset
|
590 csize_t size_so_far = 0; |
0878d7bae69f
6961697: move nmethod constants section before instruction section
twisti
parents:
1748
diff
changeset
|
591 for (int n = (int) SECT_FIRST; n < (int) SECT_LIMIT; n++) { |
0878d7bae69f
6961697: move nmethod constants section before instruction section
twisti
parents:
1748
diff
changeset
|
592 const CodeSection* cur_cs = code_section(n); |
0878d7bae69f
6961697: move nmethod constants section before instruction section
twisti
parents:
1748
diff
changeset
|
593 if (!cur_cs->is_empty()) { |
0878d7bae69f
6961697: move nmethod constants section before instruction section
twisti
parents:
1748
diff
changeset
|
594 size_so_far = cur_cs->align_at_start(size_so_far); |
0 | 595 } |
1762
0878d7bae69f
6961697: move nmethod constants section before instruction section
twisti
parents:
1748
diff
changeset
|
596 if (cur_cs->index() == cs->index()) { |
0878d7bae69f
6961697: move nmethod constants section before instruction section
twisti
parents:
1748
diff
changeset
|
597 return size_so_far; |
0 | 598 } |
1762
0878d7bae69f
6961697: move nmethod constants section before instruction section
twisti
parents:
1748
diff
changeset
|
599 size_so_far += cur_cs->size(); |
0 | 600 } |
601 ShouldNotReachHere(); | |
602 return -1; | |
603 } | |
604 | |
605 csize_t CodeBuffer::total_relocation_size() const { | |
606 csize_t lsize = copy_relocations_to(NULL); // dry run only | |
1748 | 607 csize_t csize = total_content_size(); |
0 | 608 csize_t total = RelocIterator::locs_and_index_size(csize, lsize); |
609 return (csize_t) align_size_up(total, HeapWordSize); | |
610 } | |
611 | |
612 csize_t CodeBuffer::copy_relocations_to(CodeBlob* dest) const { | |
613 address buf = NULL; | |
614 csize_t buf_offset = 0; | |
615 csize_t buf_limit = 0; | |
616 if (dest != NULL) { | |
617 buf = (address)dest->relocation_begin(); | |
618 buf_limit = (address)dest->relocation_end() - buf; | |
619 assert((uintptr_t)buf % HeapWordSize == 0, "buf must be fully aligned"); | |
620 assert(buf_limit % HeapWordSize == 0, "buf must be evenly sized"); | |
621 } | |
622 // if dest == NULL, this is just the sizing pass | |
623 | |
624 csize_t code_end_so_far = 0; | |
625 csize_t code_point_so_far = 0; | |
1762
0878d7bae69f
6961697: move nmethod constants section before instruction section
twisti
parents:
1748
diff
changeset
|
626 for (int n = (int) SECT_FIRST; n < (int)SECT_LIMIT; n++) { |
0 | 627 // pull relocs out of each section |
628 const CodeSection* cs = code_section(n); | |
629 assert(!(cs->is_empty() && cs->locs_count() > 0), "sanity"); | |
630 if (cs->is_empty()) continue; // skip trivial section | |
631 relocInfo* lstart = cs->locs_start(); | |
632 relocInfo* lend = cs->locs_end(); | |
633 csize_t lsize = (csize_t)( (address)lend - (address)lstart ); | |
634 csize_t csize = cs->size(); | |
635 code_end_so_far = cs->align_at_start(code_end_so_far); | |
636 | |
637 if (lsize > 0) { | |
638 // Figure out how to advance the combined relocation point | |
639 // first to the beginning of this section. | |
640 // We'll insert one or more filler relocs to span that gap. | |
641 // (Don't bother to improve this by editing the first reloc's offset.) | |
642 csize_t new_code_point = code_end_so_far; | |
643 for (csize_t jump; | |
644 code_point_so_far < new_code_point; | |
645 code_point_so_far += jump) { | |
646 jump = new_code_point - code_point_so_far; | |
647 relocInfo filler = filler_relocInfo(); | |
648 if (jump >= filler.addr_offset()) { | |
649 jump = filler.addr_offset(); | |
650 } else { // else shrink the filler to fit | |
651 filler = relocInfo(relocInfo::none, jump); | |
652 } | |
653 if (buf != NULL) { | |
654 assert(buf_offset + (csize_t)sizeof(filler) <= buf_limit, "filler in bounds"); | |
655 *(relocInfo*)(buf+buf_offset) = filler; | |
656 } | |
657 buf_offset += sizeof(filler); | |
658 } | |
659 | |
660 // Update code point and end to skip past this section: | |
661 csize_t last_code_point = code_end_so_far + cs->locs_point_off(); | |
662 assert(code_point_so_far <= last_code_point, "sanity"); | |
663 code_point_so_far = last_code_point; // advance past this guy's relocs | |
664 } | |
665 code_end_so_far += csize; // advance past this guy's instructions too | |
666 | |
667 // Done with filler; emit the real relocations: | |
668 if (buf != NULL && lsize != 0) { | |
669 assert(buf_offset + lsize <= buf_limit, "target in bounds"); | |
670 assert((uintptr_t)lstart % HeapWordSize == 0, "sane start"); | |
671 if (buf_offset % HeapWordSize == 0) { | |
672 // Use wordwise copies if possible: | |
673 Copy::disjoint_words((HeapWord*)lstart, | |
674 (HeapWord*)(buf+buf_offset), | |
675 (lsize + HeapWordSize-1) / HeapWordSize); | |
676 } else { | |
1603
d93949c5bdcc
6730276: JDI_REGRESSION tests fail with "Error: count must be non-zero" error on x86
kvn
parents:
1552
diff
changeset
|
677 Copy::conjoint_jbytes(lstart, buf+buf_offset, lsize); |
0 | 678 } |
679 } | |
680 buf_offset += lsize; | |
681 } | |
682 | |
683 // Align end of relocation info in target. | |
684 while (buf_offset % HeapWordSize != 0) { | |
685 if (buf != NULL) { | |
686 relocInfo padding = relocInfo(relocInfo::none, 0); | |
687 assert(buf_offset + (csize_t)sizeof(padding) <= buf_limit, "padding in bounds"); | |
688 *(relocInfo*)(buf+buf_offset) = padding; | |
689 } | |
690 buf_offset += sizeof(relocInfo); | |
691 } | |
692 | |
1748 | 693 assert(code_end_so_far == total_content_size(), "sanity"); |
0 | 694 |
695 // Account for index: | |
696 if (buf != NULL) { | |
697 RelocIterator::create_index(dest->relocation_begin(), | |
698 buf_offset / sizeof(relocInfo), | |
699 dest->relocation_end()); | |
700 } | |
701 | |
702 return buf_offset; | |
703 } | |
704 | |
705 void CodeBuffer::copy_code_to(CodeBlob* dest_blob) { | |
706 #ifndef PRODUCT | |
707 if (PrintNMethods && (WizardMode || Verbose)) { | |
708 tty->print("done with CodeBuffer:"); | |
709 ((CodeBuffer*)this)->print(); | |
710 } | |
711 #endif //PRODUCT | |
712 | |
1748 | 713 CodeBuffer dest(dest_blob); |
714 assert(dest_blob->content_size() >= total_content_size(), "good sizing"); | |
0 | 715 this->compute_final_layout(&dest); |
716 relocate_code_to(&dest); | |
717 | |
718 // transfer comments from buffer to blob | |
719 dest_blob->set_comments(_comments); | |
720 | |
721 // Done moving code bytes; were they the right size? | |
1748 | 722 assert(round_to(dest.total_content_size(), oopSize) == dest_blob->content_size(), "sanity"); |
0 | 723 |
724 // Flush generated code | |
1748 | 725 ICache::invalidate_range(dest_blob->code_begin(), dest_blob->code_size()); |
0 | 726 } |
727 | |
1762
0878d7bae69f
6961697: move nmethod constants section before instruction section
twisti
parents:
1748
diff
changeset
|
728 // Move all my code into another code buffer. Consult applicable |
0878d7bae69f
6961697: move nmethod constants section before instruction section
twisti
parents:
1748
diff
changeset
|
729 // relocs to repair embedded addresses. The layout in the destination |
0878d7bae69f
6961697: move nmethod constants section before instruction section
twisti
parents:
1748
diff
changeset
|
730 // CodeBuffer is different to the source CodeBuffer: the destination |
0878d7bae69f
6961697: move nmethod constants section before instruction section
twisti
parents:
1748
diff
changeset
|
731 // CodeBuffer gets the final layout (consts, insts, stubs in order of |
0878d7bae69f
6961697: move nmethod constants section before instruction section
twisti
parents:
1748
diff
changeset
|
732 // ascending address). |
0 | 733 void CodeBuffer::relocate_code_to(CodeBuffer* dest) const { |
4040
754110e02bd5
7103380: assertion failure with -XX:+PrintNativeNMethods
never
parents:
2015
diff
changeset
|
734 address dest_end = dest->_total_start + dest->_total_size; |
754110e02bd5
7103380: assertion failure with -XX:+PrintNativeNMethods
never
parents:
2015
diff
changeset
|
735 address dest_filled = NULL; |
1762
0878d7bae69f
6961697: move nmethod constants section before instruction section
twisti
parents:
1748
diff
changeset
|
736 for (int n = (int) SECT_FIRST; n < (int) SECT_LIMIT; n++) { |
0 | 737 // pull code out of each section |
738 const CodeSection* cs = code_section(n); | |
739 if (cs->is_empty()) continue; // skip trivial section | |
740 CodeSection* dest_cs = dest->code_section(n); | |
741 assert(cs->size() == dest_cs->size(), "sanity"); | |
742 csize_t usize = dest_cs->size(); | |
743 csize_t wsize = align_size_up(usize, HeapWordSize); | |
744 assert(dest_cs->start() + wsize <= dest_end, "no overflow"); | |
745 // Copy the code as aligned machine words. | |
746 // This may also include an uninitialized partial word at the end. | |
747 Copy::disjoint_words((HeapWord*)cs->start(), | |
748 (HeapWord*)dest_cs->start(), | |
749 wsize / HeapWordSize); | |
750 | |
751 if (dest->blob() == NULL) { | |
752 // Destination is a final resting place, not just another buffer. | |
753 // Normalize uninitialized bytes in the final padding. | |
754 Copy::fill_to_bytes(dest_cs->end(), dest_cs->remaining(), | |
755 Assembler::code_fill_byte()); | |
756 } | |
4040
754110e02bd5
7103380: assertion failure with -XX:+PrintNativeNMethods
never
parents:
2015
diff
changeset
|
757 // Keep track of the highest filled address |
754110e02bd5
7103380: assertion failure with -XX:+PrintNativeNMethods
never
parents:
2015
diff
changeset
|
758 dest_filled = MAX2(dest_filled, dest_cs->end() + dest_cs->remaining()); |
0 | 759 |
760 assert(cs->locs_start() != (relocInfo*)badAddress, | |
761 "this section carries no reloc storage, but reloc was attempted"); | |
762 | |
763 // Make the new code copy use the old copy's relocations: | |
764 dest_cs->initialize_locs_from(cs); | |
7197 | 765 } |
0 | 766 |
7197 | 767 // Do relocation after all sections are copied. |
768 // This is necessary if the code uses constants in stubs, which are | |
769 // relocated when the corresponding instruction in the code (e.g., a | |
770 // call) is relocated. Stubs are placed behind the main code | |
771 // section, so that section has to be copied before relocating. | |
772 for (int n = (int) SECT_FIRST; n < (int)SECT_LIMIT; n++) { | |
773 // pull code out of each section | |
774 const CodeSection* cs = code_section(n); | |
775 if (cs->is_empty()) continue; // skip trivial section | |
776 CodeSection* dest_cs = dest->code_section(n); | |
0 | 777 { // Repair the pc relative information in the code after the move |
778 RelocIterator iter(dest_cs); | |
779 while (iter.next()) { | |
780 iter.reloc()->fix_relocation_after_move(this, dest); | |
781 } | |
782 } | |
783 } | |
4040
754110e02bd5
7103380: assertion failure with -XX:+PrintNativeNMethods
never
parents:
2015
diff
changeset
|
784 |
6926 | 785 if (dest->blob() == NULL && dest_filled != NULL) { |
4040
754110e02bd5
7103380: assertion failure with -XX:+PrintNativeNMethods
never
parents:
2015
diff
changeset
|
786 // Destination is a final resting place, not just another buffer. |
754110e02bd5
7103380: assertion failure with -XX:+PrintNativeNMethods
never
parents:
2015
diff
changeset
|
787 // Normalize uninitialized bytes in the final padding. |
754110e02bd5
7103380: assertion failure with -XX:+PrintNativeNMethods
never
parents:
2015
diff
changeset
|
788 Copy::fill_to_bytes(dest_filled, dest_end - dest_filled, |
754110e02bd5
7103380: assertion failure with -XX:+PrintNativeNMethods
never
parents:
2015
diff
changeset
|
789 Assembler::code_fill_byte()); |
754110e02bd5
7103380: assertion failure with -XX:+PrintNativeNMethods
never
parents:
2015
diff
changeset
|
790 |
754110e02bd5
7103380: assertion failure with -XX:+PrintNativeNMethods
never
parents:
2015
diff
changeset
|
791 } |
0 | 792 } |
793 | |
794 csize_t CodeBuffer::figure_expanded_capacities(CodeSection* which_cs, | |
795 csize_t amount, | |
796 csize_t* new_capacity) { | |
797 csize_t new_total_cap = 0; | |
798 | |
1762
0878d7bae69f
6961697: move nmethod constants section before instruction section
twisti
parents:
1748
diff
changeset
|
799 for (int n = (int) SECT_FIRST; n < (int) SECT_LIMIT; n++) { |
0 | 800 const CodeSection* sect = code_section(n); |
801 | |
802 if (!sect->is_empty()) { | |
1762
0878d7bae69f
6961697: move nmethod constants section before instruction section
twisti
parents:
1748
diff
changeset
|
803 // Compute initial padding; assign it to the previous section, |
0878d7bae69f
6961697: move nmethod constants section before instruction section
twisti
parents:
1748
diff
changeset
|
804 // even if it's empty (e.g. consts section can be empty). |
0878d7bae69f
6961697: move nmethod constants section before instruction section
twisti
parents:
1748
diff
changeset
|
805 // Cf. compute_final_layout |
0 | 806 csize_t padding = sect->align_at_start(new_total_cap) - new_total_cap; |
807 if (padding != 0) { | |
808 new_total_cap += padding; | |
1762
0878d7bae69f
6961697: move nmethod constants section before instruction section
twisti
parents:
1748
diff
changeset
|
809 assert(n - 1 >= SECT_FIRST, "sanity"); |
0878d7bae69f
6961697: move nmethod constants section before instruction section
twisti
parents:
1748
diff
changeset
|
810 new_capacity[n - 1] += padding; |
0 | 811 } |
812 } | |
813 | |
814 csize_t exp = sect->size(); // 100% increase | |
815 if ((uint)exp < 4*K) exp = 4*K; // minimum initial increase | |
816 if (sect == which_cs) { | |
817 if (exp < amount) exp = amount; | |
818 if (StressCodeBuffers) exp = amount; // expand only slightly | |
819 } else if (n == SECT_INSTS) { | |
820 // scale down inst increases to a more modest 25% | |
821 exp = 4*K + ((exp - 4*K) >> 2); | |
822 if (StressCodeBuffers) exp = amount / 2; // expand only slightly | |
823 } else if (sect->is_empty()) { | |
824 // do not grow an empty secondary section | |
825 exp = 0; | |
826 } | |
827 // Allow for inter-section slop: | |
828 exp += CodeSection::end_slop(); | |
829 csize_t new_cap = sect->size() + exp; | |
830 if (new_cap < sect->capacity()) { | |
831 // No need to expand after all. | |
832 new_cap = sect->capacity(); | |
833 } | |
834 new_capacity[n] = new_cap; | |
835 new_total_cap += new_cap; | |
836 } | |
837 | |
838 return new_total_cap; | |
839 } | |
840 | |
841 void CodeBuffer::expand(CodeSection* which_cs, csize_t amount) { | |
842 #ifndef PRODUCT | |
843 if (PrintNMethods && (WizardMode || Verbose)) { | |
844 tty->print("expanding CodeBuffer:"); | |
845 this->print(); | |
846 } | |
847 | |
848 if (StressCodeBuffers && blob() != NULL) { | |
849 static int expand_count = 0; | |
850 if (expand_count >= 0) expand_count += 1; | |
851 if (expand_count > 100 && is_power_of_2(expand_count)) { | |
852 tty->print_cr("StressCodeBuffers: have expanded %d times", expand_count); | |
853 // simulate an occasional allocation failure: | |
854 free_blob(); | |
855 } | |
856 } | |
857 #endif //PRODUCT | |
858 | |
859 // Resizing must be allowed | |
860 { | |
861 if (blob() == NULL) return; // caller must check for blob == NULL | |
862 for (int n = 0; n < (int)SECT_LIMIT; n++) { | |
863 guarantee(!code_section(n)->is_frozen(), "resizing not allowed when frozen"); | |
864 } | |
865 } | |
866 | |
867 // Figure new capacity for each section. | |
868 csize_t new_capacity[SECT_LIMIT]; | |
869 csize_t new_total_cap | |
870 = figure_expanded_capacities(which_cs, amount, new_capacity); | |
871 | |
872 // Create a new (temporary) code buffer to hold all the new data | |
873 CodeBuffer cb(name(), new_total_cap, 0); | |
874 if (cb.blob() == NULL) { | |
875 // Failed to allocate in code cache. | |
876 free_blob(); | |
877 return; | |
878 } | |
879 | |
880 // Create an old code buffer to remember which addresses used to go where. | |
881 // This will be useful when we do final assembly into the code cache, | |
882 // because we will need to know how to warp any internal address that | |
883 // has been created at any time in this CodeBuffer's past. | |
884 CodeBuffer* bxp = new CodeBuffer(_total_start, _total_size); | |
885 bxp->take_over_code_from(this); // remember the old undersized blob | |
886 DEBUG_ONLY(this->_blob = NULL); // silence a later assert | |
887 bxp->_before_expand = this->_before_expand; | |
888 this->_before_expand = bxp; | |
889 | |
890 // Give each section its required (expanded) capacity. | |
1762
0878d7bae69f
6961697: move nmethod constants section before instruction section
twisti
parents:
1748
diff
changeset
|
891 for (int n = (int)SECT_LIMIT-1; n >= SECT_FIRST; n--) { |
0 | 892 CodeSection* cb_sect = cb.code_section(n); |
893 CodeSection* this_sect = code_section(n); | |
894 if (new_capacity[n] == 0) continue; // already nulled out | |
1762
0878d7bae69f
6961697: move nmethod constants section before instruction section
twisti
parents:
1748
diff
changeset
|
895 if (n != SECT_INSTS) { |
0 | 896 cb.initialize_section_size(cb_sect, new_capacity[n]); |
897 } | |
898 assert(cb_sect->capacity() >= new_capacity[n], "big enough"); | |
899 address cb_start = cb_sect->start(); | |
900 cb_sect->set_end(cb_start + this_sect->size()); | |
901 if (this_sect->mark() == NULL) { | |
902 cb_sect->clear_mark(); | |
903 } else { | |
904 cb_sect->set_mark(cb_start + this_sect->mark_off()); | |
905 } | |
906 } | |
907 | |
908 // Move all the code and relocations to the new blob: | |
909 relocate_code_to(&cb); | |
910 | |
911 // Copy the temporary code buffer into the current code buffer. | |
912 // Basically, do {*this = cb}, except for some control information. | |
913 this->take_over_code_from(&cb); | |
914 cb.set_blob(NULL); | |
915 | |
916 // Zap the old code buffer contents, to avoid mistakenly using them. | |
917 debug_only(Copy::fill_to_bytes(bxp->_total_start, bxp->_total_size, | |
918 badCodeHeapFreeVal)); | |
919 | |
920 _decode_begin = NULL; // sanity | |
921 | |
922 // Make certain that the new sections are all snugly inside the new blob. | |
4059
44ce519bc3d1
7104960: JSR 292: +VerifyMethodHandles in product JVM can overflow buffer
never
parents:
4040
diff
changeset
|
923 verify_section_allocation(); |
0 | 924 |
925 #ifndef PRODUCT | |
926 if (PrintNMethods && (WizardMode || Verbose)) { | |
927 tty->print("expanded CodeBuffer:"); | |
928 this->print(); | |
929 } | |
930 #endif //PRODUCT | |
931 } | |
932 | |
933 void CodeBuffer::take_over_code_from(CodeBuffer* cb) { | |
934 // Must already have disposed of the old blob somehow. | |
935 assert(blob() == NULL, "must be empty"); | |
936 #ifdef ASSERT | |
937 | |
938 #endif | |
939 // Take the new blob away from cb. | |
940 set_blob(cb->blob()); | |
941 // Take over all the section pointers. | |
942 for (int n = 0; n < (int)SECT_LIMIT; n++) { | |
943 CodeSection* cb_sect = cb->code_section(n); | |
944 CodeSection* this_sect = code_section(n); | |
945 this_sect->take_over_code_from(cb_sect); | |
946 } | |
947 _overflow_arena = cb->_overflow_arena; | |
948 // Make sure the old cb won't try to use it or free it. | |
949 DEBUG_ONLY(cb->_blob = (BufferBlob*)badAddress); | |
950 } | |
951 | |
4059
44ce519bc3d1
7104960: JSR 292: +VerifyMethodHandles in product JVM can overflow buffer
never
parents:
4040
diff
changeset
|
952 void CodeBuffer::verify_section_allocation() { |
0 | 953 address tstart = _total_start; |
4059
44ce519bc3d1
7104960: JSR 292: +VerifyMethodHandles in product JVM can overflow buffer
never
parents:
4040
diff
changeset
|
954 if (tstart == badAddress) return; // smashed by set_blob(NULL) |
0 | 955 address tend = tstart + _total_size; |
956 if (_blob != NULL) { | |
4059
44ce519bc3d1
7104960: JSR 292: +VerifyMethodHandles in product JVM can overflow buffer
never
parents:
4040
diff
changeset
|
957 |
44ce519bc3d1
7104960: JSR 292: +VerifyMethodHandles in product JVM can overflow buffer
never
parents:
4040
diff
changeset
|
958 guarantee(tstart >= _blob->content_begin(), "sanity"); |
44ce519bc3d1
7104960: JSR 292: +VerifyMethodHandles in product JVM can overflow buffer
never
parents:
4040
diff
changeset
|
959 guarantee(tend <= _blob->content_end(), "sanity"); |
0 | 960 } |
1762
0878d7bae69f
6961697: move nmethod constants section before instruction section
twisti
parents:
1748
diff
changeset
|
961 // Verify disjointness. |
0878d7bae69f
6961697: move nmethod constants section before instruction section
twisti
parents:
1748
diff
changeset
|
962 for (int n = (int) SECT_FIRST; n < (int) SECT_LIMIT; n++) { |
0 | 963 CodeSection* sect = code_section(n); |
1762
0878d7bae69f
6961697: move nmethod constants section before instruction section
twisti
parents:
1748
diff
changeset
|
964 if (!sect->is_allocated() || sect->is_empty()) continue; |
4059
44ce519bc3d1
7104960: JSR 292: +VerifyMethodHandles in product JVM can overflow buffer
never
parents:
4040
diff
changeset
|
965 guarantee((intptr_t)sect->start() % sect->alignment() == 0 |
0 | 966 || sect->is_empty() || _blob == NULL, |
967 "start is aligned"); | |
1762
0878d7bae69f
6961697: move nmethod constants section before instruction section
twisti
parents:
1748
diff
changeset
|
968 for (int m = (int) SECT_FIRST; m < (int) SECT_LIMIT; m++) { |
0878d7bae69f
6961697: move nmethod constants section before instruction section
twisti
parents:
1748
diff
changeset
|
969 CodeSection* other = code_section(m); |
0878d7bae69f
6961697: move nmethod constants section before instruction section
twisti
parents:
1748
diff
changeset
|
970 if (!other->is_allocated() || other == sect) continue; |
4059
44ce519bc3d1
7104960: JSR 292: +VerifyMethodHandles in product JVM can overflow buffer
never
parents:
4040
diff
changeset
|
971 guarantee(!other->contains(sect->start() ), "sanity"); |
1762
0878d7bae69f
6961697: move nmethod constants section before instruction section
twisti
parents:
1748
diff
changeset
|
972 // limit is an exclusive address and can be the start of another |
0878d7bae69f
6961697: move nmethod constants section before instruction section
twisti
parents:
1748
diff
changeset
|
973 // section. |
4059
44ce519bc3d1
7104960: JSR 292: +VerifyMethodHandles in product JVM can overflow buffer
never
parents:
4040
diff
changeset
|
974 guarantee(!other->contains(sect->limit() - 1), "sanity"); |
1762
0878d7bae69f
6961697: move nmethod constants section before instruction section
twisti
parents:
1748
diff
changeset
|
975 } |
4059
44ce519bc3d1
7104960: JSR 292: +VerifyMethodHandles in product JVM can overflow buffer
never
parents:
4040
diff
changeset
|
976 guarantee(sect->end() <= tend, "sanity"); |
44ce519bc3d1
7104960: JSR 292: +VerifyMethodHandles in product JVM can overflow buffer
never
parents:
4040
diff
changeset
|
977 guarantee(sect->end() <= sect->limit(), "sanity"); |
0 | 978 } |
979 } | |
4059
44ce519bc3d1
7104960: JSR 292: +VerifyMethodHandles in product JVM can overflow buffer
never
parents:
4040
diff
changeset
|
980 |
44ce519bc3d1
7104960: JSR 292: +VerifyMethodHandles in product JVM can overflow buffer
never
parents:
4040
diff
changeset
|
981 void CodeBuffer::log_section_sizes(const char* name) { |
44ce519bc3d1
7104960: JSR 292: +VerifyMethodHandles in product JVM can overflow buffer
never
parents:
4040
diff
changeset
|
982 if (xtty != NULL) { |
44ce519bc3d1
7104960: JSR 292: +VerifyMethodHandles in product JVM can overflow buffer
never
parents:
4040
diff
changeset
|
983 // log info about buffer usage |
44ce519bc3d1
7104960: JSR 292: +VerifyMethodHandles in product JVM can overflow buffer
never
parents:
4040
diff
changeset
|
984 xtty->print_cr("<blob name='%s' size='%d'>", name, _total_size); |
44ce519bc3d1
7104960: JSR 292: +VerifyMethodHandles in product JVM can overflow buffer
never
parents:
4040
diff
changeset
|
985 for (int n = (int) CodeBuffer::SECT_FIRST; n < (int) CodeBuffer::SECT_LIMIT; n++) { |
44ce519bc3d1
7104960: JSR 292: +VerifyMethodHandles in product JVM can overflow buffer
never
parents:
4040
diff
changeset
|
986 CodeSection* sect = code_section(n); |
44ce519bc3d1
7104960: JSR 292: +VerifyMethodHandles in product JVM can overflow buffer
never
parents:
4040
diff
changeset
|
987 if (!sect->is_allocated() || sect->is_empty()) continue; |
44ce519bc3d1
7104960: JSR 292: +VerifyMethodHandles in product JVM can overflow buffer
never
parents:
4040
diff
changeset
|
988 xtty->print_cr("<sect index='%d' size='" SIZE_FORMAT "' free='" SIZE_FORMAT "'/>", |
44ce519bc3d1
7104960: JSR 292: +VerifyMethodHandles in product JVM can overflow buffer
never
parents:
4040
diff
changeset
|
989 n, sect->limit() - sect->start(), sect->limit() - sect->end()); |
44ce519bc3d1
7104960: JSR 292: +VerifyMethodHandles in product JVM can overflow buffer
never
parents:
4040
diff
changeset
|
990 } |
44ce519bc3d1
7104960: JSR 292: +VerifyMethodHandles in product JVM can overflow buffer
never
parents:
4040
diff
changeset
|
991 xtty->print_cr("</blob>"); |
44ce519bc3d1
7104960: JSR 292: +VerifyMethodHandles in product JVM can overflow buffer
never
parents:
4040
diff
changeset
|
992 } |
44ce519bc3d1
7104960: JSR 292: +VerifyMethodHandles in product JVM can overflow buffer
never
parents:
4040
diff
changeset
|
993 } |
0 | 994 |
995 #ifndef PRODUCT | |
996 | |
997 void CodeSection::dump() { | |
998 address ptr = start(); | |
999 for (csize_t step; ptr < end(); ptr += step) { | |
1000 step = end() - ptr; | |
1001 if (step > jintSize * 4) step = jintSize * 4; | |
1002 tty->print(PTR_FORMAT ": ", ptr); | |
1003 while (step > 0) { | |
1004 tty->print(" " PTR32_FORMAT, *(jint*)ptr); | |
1005 ptr += jintSize; | |
1006 } | |
1007 tty->cr(); | |
1008 } | |
1009 } | |
1010 | |
1011 | |
1012 void CodeSection::decode() { | |
1013 Disassembler::decode(start(), end()); | |
1014 } | |
1015 | |
1016 | |
1017 void CodeBuffer::block_comment(intptr_t offset, const char * comment) { | |
1018 _comments.add_comment(offset, comment); | |
1019 } | |
1020 | |
6197 | 1021 class CodeComment: public CHeapObj<mtCode> { |
0 | 1022 private: |
1023 friend class CodeComments; | |
1024 intptr_t _offset; | |
1025 const char * _comment; | |
1026 CodeComment* _next; | |
1027 | |
1028 ~CodeComment() { | |
1029 assert(_next == NULL, "wrong interface for freeing list"); | |
6197 | 1030 os::free((void*)_comment, mtCode); |
0 | 1031 } |
1032 | |
1033 public: | |
1034 CodeComment(intptr_t offset, const char * comment) { | |
1035 _offset = offset; | |
6197 | 1036 _comment = os::strdup(comment, mtCode); |
0 | 1037 _next = NULL; |
1038 } | |
1039 | |
1040 intptr_t offset() const { return _offset; } | |
1041 const char * comment() const { return _comment; } | |
1042 CodeComment* next() { return _next; } | |
1043 | |
1044 void set_next(CodeComment* next) { _next = next; } | |
1045 | |
1046 CodeComment* find(intptr_t offset) { | |
1047 CodeComment* a = this; | |
1048 while (a != NULL && a->_offset != offset) { | |
1049 a = a->_next; | |
1050 } | |
1051 return a; | |
1052 } | |
6796
b31471cdc53e
7200163: add CodeComments functionality to assember stubs
kvn
parents:
6725
diff
changeset
|
1053 |
b31471cdc53e
7200163: add CodeComments functionality to assember stubs
kvn
parents:
6725
diff
changeset
|
1054 // Convenience for add_comment. |
b31471cdc53e
7200163: add CodeComments functionality to assember stubs
kvn
parents:
6725
diff
changeset
|
1055 CodeComment* find_last(intptr_t offset) { |
b31471cdc53e
7200163: add CodeComments functionality to assember stubs
kvn
parents:
6725
diff
changeset
|
1056 CodeComment* a = find(offset); |
b31471cdc53e
7200163: add CodeComments functionality to assember stubs
kvn
parents:
6725
diff
changeset
|
1057 if (a != NULL) { |
b31471cdc53e
7200163: add CodeComments functionality to assember stubs
kvn
parents:
6725
diff
changeset
|
1058 while ((a->_next != NULL) && (a->_next->_offset == offset)) { |
b31471cdc53e
7200163: add CodeComments functionality to assember stubs
kvn
parents:
6725
diff
changeset
|
1059 a = a->_next; |
b31471cdc53e
7200163: add CodeComments functionality to assember stubs
kvn
parents:
6725
diff
changeset
|
1060 } |
b31471cdc53e
7200163: add CodeComments functionality to assember stubs
kvn
parents:
6725
diff
changeset
|
1061 } |
b31471cdc53e
7200163: add CodeComments functionality to assember stubs
kvn
parents:
6725
diff
changeset
|
1062 return a; |
b31471cdc53e
7200163: add CodeComments functionality to assember stubs
kvn
parents:
6725
diff
changeset
|
1063 } |
0 | 1064 }; |
1065 | |
1066 | |
1067 void CodeComments::add_comment(intptr_t offset, const char * comment) { | |
6796
b31471cdc53e
7200163: add CodeComments functionality to assember stubs
kvn
parents:
6725
diff
changeset
|
1068 CodeComment* c = new CodeComment(offset, comment); |
b31471cdc53e
7200163: add CodeComments functionality to assember stubs
kvn
parents:
6725
diff
changeset
|
1069 CodeComment* inspos = (_comments == NULL) ? NULL : _comments->find_last(offset); |
b31471cdc53e
7200163: add CodeComments functionality to assember stubs
kvn
parents:
6725
diff
changeset
|
1070 |
b31471cdc53e
7200163: add CodeComments functionality to assember stubs
kvn
parents:
6725
diff
changeset
|
1071 if (inspos) { |
b31471cdc53e
7200163: add CodeComments functionality to assember stubs
kvn
parents:
6725
diff
changeset
|
1072 // insert after already existing comments with same offset |
b31471cdc53e
7200163: add CodeComments functionality to assember stubs
kvn
parents:
6725
diff
changeset
|
1073 c->set_next(inspos->next()); |
b31471cdc53e
7200163: add CodeComments functionality to assember stubs
kvn
parents:
6725
diff
changeset
|
1074 inspos->set_next(c); |
0 | 1075 } else { |
6796
b31471cdc53e
7200163: add CodeComments functionality to assember stubs
kvn
parents:
6725
diff
changeset
|
1076 // no comments with such offset, yet. Insert before anything else. |
0 | 1077 c->set_next(_comments); |
1078 _comments = c; | |
1079 } | |
1080 } | |
1081 | |
1082 | |
1083 void CodeComments::assign(CodeComments& other) { | |
1084 _comments = other._comments; | |
1085 } | |
1086 | |
1087 | |
6796
b31471cdc53e
7200163: add CodeComments functionality to assember stubs
kvn
parents:
6725
diff
changeset
|
1088 void CodeComments::print_block_comment(outputStream* stream, intptr_t offset) const { |
0 | 1089 if (_comments != NULL) { |
1090 CodeComment* c = _comments->find(offset); | |
1091 while (c && c->offset() == offset) { | |
100
c7c777385a15
6667042: PrintAssembly option does not work without special plugin
jrose
parents:
0
diff
changeset
|
1092 stream->bol(); |
0 | 1093 stream->print(" ;; "); |
1094 stream->print_cr(c->comment()); | |
1095 c = c->next(); | |
1096 } | |
1097 } | |
1098 } | |
1099 | |
1100 | |
1101 void CodeComments::free() { | |
1102 CodeComment* n = _comments; | |
1103 while (n) { | |
1104 // unlink the node from the list saving a pointer to the next | |
1105 CodeComment* p = n->_next; | |
1106 n->_next = NULL; | |
1107 delete n; | |
1108 n = p; | |
1109 } | |
1110 _comments = NULL; | |
1111 } | |
1112 | |
1113 | |
1114 | |
1115 void CodeBuffer::decode() { | |
6796
b31471cdc53e
7200163: add CodeComments functionality to assember stubs
kvn
parents:
6725
diff
changeset
|
1116 ttyLocker ttyl; |
1748 | 1117 Disassembler::decode(decode_begin(), insts_end()); |
1118 _decode_begin = insts_end(); | |
0 | 1119 } |
1120 | |
1121 | |
1122 void CodeBuffer::skip_decode() { | |
1748 | 1123 _decode_begin = insts_end(); |
0 | 1124 } |
1125 | |
1126 | |
1127 void CodeBuffer::decode_all() { | |
6796
b31471cdc53e
7200163: add CodeComments functionality to assember stubs
kvn
parents:
6725
diff
changeset
|
1128 ttyLocker ttyl; |
0 | 1129 for (int n = 0; n < (int)SECT_LIMIT; n++) { |
1130 // dump contents of each section | |
1131 CodeSection* cs = code_section(n); | |
1132 tty->print_cr("! %s:", code_section_name(n)); | |
1133 if (cs != consts()) | |
1134 cs->decode(); | |
1135 else | |
1136 cs->dump(); | |
1137 } | |
1138 } | |
1139 | |
1140 | |
1141 void CodeSection::print(const char* name) { | |
1142 csize_t locs_size = locs_end() - locs_start(); | |
1143 tty->print_cr(" %7s.code = " PTR_FORMAT " : " PTR_FORMAT " : " PTR_FORMAT " (%d of %d)%s", | |
1144 name, start(), end(), limit(), size(), capacity(), | |
1145 is_frozen()? " [frozen]": ""); | |
1146 tty->print_cr(" %7s.locs = " PTR_FORMAT " : " PTR_FORMAT " : " PTR_FORMAT " (%d of %d) point=%d", | |
1147 name, locs_start(), locs_end(), locs_limit(), locs_size, locs_capacity(), locs_point_off()); | |
1148 if (PrintRelocations) { | |
1149 RelocIterator iter(this); | |
1150 iter.print(); | |
1151 } | |
1152 } | |
1153 | |
1154 void CodeBuffer::print() { | |
1155 if (this == NULL) { | |
1156 tty->print_cr("NULL CodeBuffer pointer"); | |
1157 return; | |
1158 } | |
1159 | |
1160 tty->print_cr("CodeBuffer:"); | |
1161 for (int n = 0; n < (int)SECT_LIMIT; n++) { | |
1162 // print each section | |
1163 CodeSection* cs = code_section(n); | |
1164 cs->print(code_section_name(n)); | |
1165 } | |
1166 } | |
1167 | |
1168 #endif // PRODUCT |