Mercurial > hg > graal-compiler
annotate src/share/vm/asm/codeBuffer.cpp @ 6275:957c266d8bc5
Merge with http://hg.openjdk.java.net/hsx/hsx24/hotspot/
| author | Doug Simon <doug.simon@oracle.com> |
|---|---|
| date | Tue, 21 Aug 2012 10:39:19 +0200 |
| parents | 04b9a2566eec d2a62e0f25eb |
| children | e522a00b91aa |
| rev | line source |
|---|---|
| 0 | 1 /* |
| 1748 | 2 * Copyright (c) 1997, 2010, 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 #include "precompiled.hpp" |
| 26 #include "asm/codeBuffer.hpp" | |
| 27 #include "compiler/disassembler.hpp" | |
| 28 #include "utilities/copy.hpp" | |
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29 #include "utilities/xmlstream.hpp" |
| 0 | 30 |
| 31 // The structure of a CodeSection: | |
| 32 // | |
| 33 // _start -> +----------------+ | |
| 34 // | machine code...| | |
| 35 // _end -> |----------------| | |
| 36 // | | | |
| 37 // | (empty) | | |
| 38 // | | | |
| 39 // | | | |
| 40 // +----------------+ | |
| 41 // _limit -> | | | |
| 42 // | |
| 43 // _locs_start -> +----------------+ | |
| 44 // |reloc records...| | |
| 45 // |----------------| | |
| 46 // _locs_end -> | | | |
| 47 // | | | |
| 48 // | (empty) | | |
| 49 // | | | |
| 50 // | | | |
| 51 // +----------------+ | |
| 52 // _locs_limit -> | | | |
| 53 // The _end (resp. _limit) pointer refers to the first | |
| 54 // unused (resp. unallocated) byte. | |
| 55 | |
| 56 // The structure of the CodeBuffer while code is being accumulated: | |
| 57 // | |
| 58 // _total_start -> \ | |
| 59 // _insts._start -> +----------------+ | |
| 60 // | | | |
| 61 // | Code | | |
| 62 // | | | |
| 63 // _stubs._start -> |----------------| | |
| 64 // | | | |
| 65 // | Stubs | (also handlers for deopt/exception) | |
| 66 // | | | |
| 67 // _consts._start -> |----------------| | |
| 68 // | | | |
| 69 // | Constants | | |
| 70 // | | | |
| 71 // +----------------+ | |
| 72 // + _total_size -> | | | |
| 73 // | |
| 74 // When the code and relocations are copied to the code cache, | |
| 75 // the empty parts of each section are removed, and everything | |
| 76 // is copied into contiguous locations. | |
| 77 | |
| 78 typedef CodeBuffer::csize_t csize_t; // file-local definition | |
| 79 | |
| 1748 | 80 // External buffer, in a predefined CodeBlob. |
| 0 | 81 // Important: The code_start must be taken exactly, and not realigned. |
| 1748 | 82 CodeBuffer::CodeBuffer(CodeBlob* blob) { |
| 0 | 83 initialize_misc("static buffer"); |
| 1748 | 84 initialize(blob->content_begin(), blob->content_size()); |
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85 verify_section_allocation(); |
| 0 | 86 } |
| 87 | |
| 88 void CodeBuffer::initialize(csize_t code_size, csize_t locs_size) { | |
| 89 // Compute maximal alignment. | |
| 90 int align = _insts.alignment(); | |
| 91 // Always allow for empty slop around each section. | |
| 92 int slop = (int) CodeSection::end_slop(); | |
| 93 | |
| 94 assert(blob() == NULL, "only once"); | |
| 95 set_blob(BufferBlob::create(_name, code_size + (align+slop) * (SECT_LIMIT+1))); | |
| 96 if (blob() == NULL) { | |
| 97 // The assembler constructor will throw a fatal on an empty CodeBuffer. | |
| 98 return; // caller must test this | |
| 99 } | |
| 100 | |
| 101 // Set up various pointers into the blob. | |
| 102 initialize(_total_start, _total_size); | |
| 103 | |
| 1748 | 104 assert((uintptr_t)insts_begin() % CodeEntryAlignment == 0, "instruction start not code entry aligned"); |
| 0 | 105 |
| 106 pd_initialize(); | |
| 107 | |
| 108 if (locs_size != 0) { | |
| 109 _insts.initialize_locs(locs_size / sizeof(relocInfo)); | |
| 110 } | |
| 111 | |
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112 verify_section_allocation(); |
| 0 | 113 } |
| 114 | |
| 115 | |
| 116 CodeBuffer::~CodeBuffer() { | |
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117 verify_section_allocation(); |
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118 |
| 0 | 119 // If we allocate our code buffer from the CodeCache |
| 120 // via a BufferBlob, and it's not permanent, then | |
| 121 // free the BufferBlob. | |
| 122 // The rest of the memory will be freed when the ResourceObj | |
| 123 // is released. | |
| 124 for (CodeBuffer* cb = this; cb != NULL; cb = cb->before_expand()) { | |
| 125 // Previous incarnations of this buffer are held live, so that internal | |
| 126 // addresses constructed before expansions will not be confused. | |
| 127 cb->free_blob(); | |
| 128 } | |
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129 |
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130 // free any overflow storage |
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131 delete _overflow_arena; |
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132 |
| 0 | 133 #ifdef ASSERT |
| 1685 | 134 // Save allocation type to execute assert in ~ResourceObj() |
| 135 // which is called after this destructor. | |
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136 assert(_default_oop_recorder.allocated_on_stack(), "should be embedded object"); |
| 1685 | 137 ResourceObj::allocation_type at = _default_oop_recorder.get_allocation_type(); |
| 0 | 138 Copy::fill_to_bytes(this, sizeof(*this), badResourceValue); |
| 1685 | 139 ResourceObj::set_allocation_type((address)(&_default_oop_recorder), at); |
| 0 | 140 #endif |
| 141 } | |
| 142 | |
| 143 void CodeBuffer::initialize_oop_recorder(OopRecorder* r) { | |
| 144 assert(_oop_recorder == &_default_oop_recorder && _default_oop_recorder.is_unused(), "do this once"); | |
| 145 DEBUG_ONLY(_default_oop_recorder.oop_size()); // force unused OR to be frozen | |
| 146 _oop_recorder = r; | |
| 147 } | |
| 148 | |
| 149 void CodeBuffer::initialize_section_size(CodeSection* cs, csize_t size) { | |
| 150 assert(cs != &_insts, "insts is the memory provider, not the consumer"); | |
| 151 csize_t slop = CodeSection::end_slop(); // margin between sections | |
| 152 int align = cs->alignment(); | |
| 153 assert(is_power_of_2(align), "sanity"); | |
| 154 address start = _insts._start; | |
| 155 address limit = _insts._limit; | |
| 156 address middle = limit - size; | |
| 157 middle -= (intptr_t)middle & (align-1); // align the division point downward | |
| 158 guarantee(middle - slop > start, "need enough space to divide up"); | |
| 159 _insts._limit = middle - slop; // subtract desired space, plus slop | |
| 160 cs->initialize(middle, limit - middle); | |
| 161 assert(cs->start() == middle, "sanity"); | |
| 162 assert(cs->limit() == limit, "sanity"); | |
| 163 // give it some relocations to start with, if the main section has them | |
| 164 if (_insts.has_locs()) cs->initialize_locs(1); | |
| 165 } | |
| 166 | |
| 167 void CodeBuffer::freeze_section(CodeSection* cs) { | |
| 168 CodeSection* next_cs = (cs == consts())? NULL: code_section(cs->index()+1); | |
| 169 csize_t frozen_size = cs->size(); | |
| 170 if (next_cs != NULL) { | |
| 171 frozen_size = next_cs->align_at_start(frozen_size); | |
| 172 } | |
| 173 address old_limit = cs->limit(); | |
| 174 address new_limit = cs->start() + frozen_size; | |
| 175 relocInfo* old_locs_limit = cs->locs_limit(); | |
| 176 relocInfo* new_locs_limit = cs->locs_end(); | |
| 177 // Patch the limits. | |
| 178 cs->_limit = new_limit; | |
| 179 cs->_locs_limit = new_locs_limit; | |
| 180 cs->_frozen = true; | |
| 181 if (!next_cs->is_allocated() && !next_cs->is_frozen()) { | |
| 182 // Give remaining buffer space to the following section. | |
| 183 next_cs->initialize(new_limit, old_limit - new_limit); | |
| 184 next_cs->initialize_shared_locs(new_locs_limit, | |
| 185 old_locs_limit - new_locs_limit); | |
| 186 } | |
| 187 } | |
| 188 | |
| 189 void CodeBuffer::set_blob(BufferBlob* blob) { | |
| 190 _blob = blob; | |
| 191 if (blob != NULL) { | |
| 1748 | 192 address start = blob->content_begin(); |
| 193 address end = blob->content_end(); | |
| 0 | 194 // Round up the starting address. |
| 195 int align = _insts.alignment(); | |
| 196 start += (-(intptr_t)start) & (align-1); | |
| 197 _total_start = start; | |
| 198 _total_size = end - start; | |
| 199 } else { | |
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200 #ifdef ASSERT |
| 0 | 201 // Clean out dangling pointers. |
| 202 _total_start = badAddress; | |
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203 _consts._start = _consts._end = badAddress; |
| 0 | 204 _insts._start = _insts._end = badAddress; |
| 205 _stubs._start = _stubs._end = badAddress; | |
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206 #endif //ASSERT |
| 0 | 207 } |
| 208 } | |
| 209 | |
| 210 void CodeBuffer::free_blob() { | |
| 211 if (_blob != NULL) { | |
| 212 BufferBlob::free(_blob); | |
| 213 set_blob(NULL); | |
| 214 } | |
| 215 } | |
| 216 | |
| 217 const char* CodeBuffer::code_section_name(int n) { | |
| 218 #ifdef PRODUCT | |
| 219 return NULL; | |
| 220 #else //PRODUCT | |
| 221 switch (n) { | |
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222 case SECT_CONSTS: return "consts"; |
| 0 | 223 case SECT_INSTS: return "insts"; |
| 224 case SECT_STUBS: return "stubs"; | |
| 225 default: return NULL; | |
| 226 } | |
| 227 #endif //PRODUCT | |
| 228 } | |
| 229 | |
| 230 int CodeBuffer::section_index_of(address addr) const { | |
| 231 for (int n = 0; n < (int)SECT_LIMIT; n++) { | |
| 232 const CodeSection* cs = code_section(n); | |
| 233 if (cs->allocates(addr)) return n; | |
| 234 } | |
| 235 return SECT_NONE; | |
| 236 } | |
| 237 | |
| 238 int CodeBuffer::locator(address addr) const { | |
| 239 for (int n = 0; n < (int)SECT_LIMIT; n++) { | |
| 240 const CodeSection* cs = code_section(n); | |
| 241 if (cs->allocates(addr)) { | |
| 242 return locator(addr - cs->start(), n); | |
| 243 } | |
| 244 } | |
| 245 return -1; | |
| 246 } | |
| 247 | |
| 248 address CodeBuffer::locator_address(int locator) const { | |
| 249 if (locator < 0) return NULL; | |
| 250 address start = code_section(locator_sect(locator))->start(); | |
| 251 return start + locator_pos(locator); | |
| 252 } | |
| 253 | |
| 254 address CodeBuffer::decode_begin() { | |
| 255 address begin = _insts.start(); | |
| 256 if (_decode_begin != NULL && _decode_begin > begin) | |
| 257 begin = _decode_begin; | |
| 258 return begin; | |
| 259 } | |
| 260 | |
| 261 | |
| 262 GrowableArray<int>* CodeBuffer::create_patch_overflow() { | |
| 263 if (_overflow_arena == NULL) { | |
| 6197 | 264 _overflow_arena = new (mtCode) Arena(); |
| 0 | 265 } |
| 266 return new (_overflow_arena) GrowableArray<int>(_overflow_arena, 8, 0, 0); | |
| 267 } | |
| 268 | |
| 269 | |
| 270 // Helper function for managing labels and their target addresses. | |
| 271 // Returns a sensible address, and if it is not the label's final | |
| 272 // address, notes the dependency (at 'branch_pc') on the label. | |
| 273 address CodeSection::target(Label& L, address branch_pc) { | |
| 274 if (L.is_bound()) { | |
| 275 int loc = L.loc(); | |
| 276 if (index() == CodeBuffer::locator_sect(loc)) { | |
| 277 return start() + CodeBuffer::locator_pos(loc); | |
| 278 } else { | |
| 279 return outer()->locator_address(loc); | |
| 280 } | |
| 281 } else { | |
| 282 assert(allocates2(branch_pc), "sanity"); | |
| 283 address base = start(); | |
| 284 int patch_loc = CodeBuffer::locator(branch_pc - base, index()); | |
| 285 L.add_patch_at(outer(), patch_loc); | |
| 286 | |
| 287 // Need to return a pc, doesn't matter what it is since it will be | |
| 288 // replaced during resolution later. | |
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289 // Don't return NULL or badAddress, since branches shouldn't overflow. |
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290 // Don't return base either because that could overflow displacements |
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291 // for shorter branches. It will get checked when bound. |
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292 return branch_pc; |
| 0 | 293 } |
| 294 } | |
| 295 | |
| 296 void CodeSection::relocate(address at, RelocationHolder const& spec, int format) { | |
| 297 Relocation* reloc = spec.reloc(); | |
| 298 relocInfo::relocType rtype = (relocInfo::relocType) reloc->type(); | |
| 299 if (rtype == relocInfo::none) return; | |
| 300 | |
| 301 // The assertion below has been adjusted, to also work for | |
| 302 // relocation for fixup. Sometimes we want to put relocation | |
| 303 // information for the next instruction, since it will be patched | |
| 304 // with a call. | |
| 305 assert(start() <= at && at <= end()+1, | |
| 306 "cannot relocate data outside code boundaries"); | |
| 307 | |
| 308 if (!has_locs()) { | |
| 309 // no space for relocation information provided => code cannot be | |
| 310 // relocated. Make sure that relocate is only called with rtypes | |
| 311 // that can be ignored for this kind of code. | |
| 312 assert(rtype == relocInfo::none || | |
| 313 rtype == relocInfo::runtime_call_type || | |
| 314 rtype == relocInfo::internal_word_type|| | |
| 315 rtype == relocInfo::section_word_type || | |
| 316 rtype == relocInfo::external_word_type, | |
| 317 "code needs relocation information"); | |
| 318 // leave behind an indication that we attempted a relocation | |
| 319 DEBUG_ONLY(_locs_start = _locs_limit = (relocInfo*)badAddress); | |
| 320 return; | |
| 321 } | |
| 322 | |
| 323 // Advance the point, noting the offset we'll have to record. | |
| 324 csize_t offset = at - locs_point(); | |
| 325 set_locs_point(at); | |
| 326 | |
| 327 // Test for a couple of overflow conditions; maybe expand the buffer. | |
| 328 relocInfo* end = locs_end(); | |
| 329 relocInfo* req = end + relocInfo::length_limit; | |
| 330 // Check for (potential) overflow | |
| 331 if (req >= locs_limit() || offset >= relocInfo::offset_limit()) { | |
| 332 req += (uint)offset / (uint)relocInfo::offset_limit(); | |
| 333 if (req >= locs_limit()) { | |
| 334 // Allocate or reallocate. | |
| 335 expand_locs(locs_count() + (req - end)); | |
| 336 // reload pointer | |
| 337 end = locs_end(); | |
| 338 } | |
| 339 } | |
| 340 | |
| 341 // If the offset is giant, emit filler relocs, of type 'none', but | |
| 342 // each carrying the largest possible offset, to advance the locs_point. | |
| 343 while (offset >= relocInfo::offset_limit()) { | |
| 344 assert(end < locs_limit(), "adjust previous paragraph of code"); | |
| 345 *end++ = filler_relocInfo(); | |
| 346 offset -= filler_relocInfo().addr_offset(); | |
| 347 } | |
| 348 | |
| 349 // If it's a simple reloc with no data, we'll just write (rtype | offset). | |
| 350 (*end) = relocInfo(rtype, offset, format); | |
| 351 | |
| 352 // If it has data, insert the prefix, as (data_prefix_tag | data1), data2. | |
| 353 end->initialize(this, reloc); | |
| 354 } | |
| 355 | |
| 356 void CodeSection::initialize_locs(int locs_capacity) { | |
| 357 assert(_locs_start == NULL, "only one locs init step, please"); | |
| 358 // Apply a priori lower limits to relocation size: | |
| 359 csize_t min_locs = MAX2(size() / 16, (csize_t)4); | |
| 360 if (locs_capacity < min_locs) locs_capacity = min_locs; | |
| 361 relocInfo* locs_start = NEW_RESOURCE_ARRAY(relocInfo, locs_capacity); | |
| 362 _locs_start = locs_start; | |
| 363 _locs_end = locs_start; | |
| 364 _locs_limit = locs_start + locs_capacity; | |
| 365 _locs_own = true; | |
| 366 } | |
| 367 | |
| 368 void CodeSection::initialize_shared_locs(relocInfo* buf, int length) { | |
| 369 assert(_locs_start == NULL, "do this before locs are allocated"); | |
| 370 // Internal invariant: locs buf must be fully aligned. | |
| 371 // See copy_relocations_to() below. | |
| 372 while ((uintptr_t)buf % HeapWordSize != 0 && length > 0) { | |
| 373 ++buf; --length; | |
| 374 } | |
| 375 if (length > 0) { | |
| 376 _locs_start = buf; | |
| 377 _locs_end = buf; | |
| 378 _locs_limit = buf + length; | |
| 379 _locs_own = false; | |
| 380 } | |
| 381 } | |
| 382 | |
| 383 void CodeSection::initialize_locs_from(const CodeSection* source_cs) { | |
| 384 int lcount = source_cs->locs_count(); | |
| 385 if (lcount != 0) { | |
| 386 initialize_shared_locs(source_cs->locs_start(), lcount); | |
| 387 _locs_end = _locs_limit = _locs_start + lcount; | |
| 388 assert(is_allocated(), "must have copied code already"); | |
| 389 set_locs_point(start() + source_cs->locs_point_off()); | |
| 390 } | |
| 391 assert(this->locs_count() == source_cs->locs_count(), "sanity"); | |
| 392 } | |
| 393 | |
| 394 void CodeSection::expand_locs(int new_capacity) { | |
| 395 if (_locs_start == NULL) { | |
| 396 initialize_locs(new_capacity); | |
| 397 return; | |
| 398 } else { | |
| 399 int old_count = locs_count(); | |
| 400 int old_capacity = locs_capacity(); | |
| 401 if (new_capacity < old_capacity * 2) | |
| 402 new_capacity = old_capacity * 2; | |
| 403 relocInfo* locs_start; | |
| 404 if (_locs_own) { | |
| 405 locs_start = REALLOC_RESOURCE_ARRAY(relocInfo, _locs_start, old_capacity, new_capacity); | |
| 406 } else { | |
| 407 locs_start = NEW_RESOURCE_ARRAY(relocInfo, new_capacity); | |
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408 Copy::conjoint_jbytes(_locs_start, locs_start, old_capacity * sizeof(relocInfo)); |
| 0 | 409 _locs_own = true; |
| 410 } | |
| 411 _locs_start = locs_start; | |
| 412 _locs_end = locs_start + old_count; | |
| 413 _locs_limit = locs_start + new_capacity; | |
| 414 } | |
| 415 } | |
| 416 | |
| 417 | |
| 418 /// Support for emitting the code to its final location. | |
| 419 /// The pattern is the same for all functions. | |
| 420 /// We iterate over all the sections, padding each to alignment. | |
| 421 | |
| 1748 | 422 csize_t CodeBuffer::total_content_size() const { |
| 423 csize_t size_so_far = 0; | |
| 0 | 424 for (int n = 0; n < (int)SECT_LIMIT; n++) { |
| 425 const CodeSection* cs = code_section(n); | |
| 426 if (cs->is_empty()) continue; // skip trivial section | |
| 1748 | 427 size_so_far = cs->align_at_start(size_so_far); |
| 428 size_so_far += cs->size(); | |
| 0 | 429 } |
| 1748 | 430 return size_so_far; |
| 0 | 431 } |
| 432 | |
| 433 void CodeBuffer::compute_final_layout(CodeBuffer* dest) const { | |
| 434 address buf = dest->_total_start; | |
| 435 csize_t buf_offset = 0; | |
| 1748 | 436 assert(dest->_total_size >= total_content_size(), "must be big enough"); |
| 0 | 437 |
| 438 { | |
| 439 // not sure why this is here, but why not... | |
| 440 int alignSize = MAX2((intx) sizeof(jdouble), CodeEntryAlignment); | |
| 441 assert( (dest->_total_start - _insts.start()) % alignSize == 0, "copy must preserve alignment"); | |
| 442 } | |
| 443 | |
| 444 const CodeSection* prev_cs = NULL; | |
| 445 CodeSection* prev_dest_cs = NULL; | |
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446 |
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447 for (int n = (int) SECT_FIRST; n < (int) SECT_LIMIT; n++) { |
| 0 | 448 // figure compact layout of each section |
| 449 const CodeSection* cs = code_section(n); | |
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450 csize_t csize = cs->size(); |
| 0 | 451 |
| 452 CodeSection* dest_cs = dest->code_section(n); | |
| 453 if (!cs->is_empty()) { | |
| 454 // Compute initial padding; assign it to the previous non-empty guy. | |
| 455 // Cf. figure_expanded_capacities. | |
| 456 csize_t padding = cs->align_at_start(buf_offset) - buf_offset; | |
| 457 if (padding != 0) { | |
| 458 buf_offset += padding; | |
| 459 assert(prev_dest_cs != NULL, "sanity"); | |
| 460 prev_dest_cs->_limit += padding; | |
| 461 } | |
| 462 #ifdef ASSERT | |
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463 if (prev_cs != NULL && prev_cs->is_frozen() && n < (SECT_LIMIT - 1)) { |
| 0 | 464 // Make sure the ends still match up. |
| 465 // This is important because a branch in a frozen section | |
| 466 // might target code in a following section, via a Label, | |
| 467 // and without a relocation record. See Label::patch_instructions. | |
| 468 address dest_start = buf+buf_offset; | |
| 469 csize_t start2start = cs->start() - prev_cs->start(); | |
| 470 csize_t dest_start2start = dest_start - prev_dest_cs->start(); | |
| 471 assert(start2start == dest_start2start, "cannot stretch frozen sect"); | |
| 472 } | |
| 473 #endif //ASSERT | |
| 474 prev_dest_cs = dest_cs; | |
| 475 prev_cs = cs; | |
| 476 } | |
| 477 | |
| 478 debug_only(dest_cs->_start = NULL); // defeat double-initialization assert | |
| 479 dest_cs->initialize(buf+buf_offset, csize); | |
| 480 dest_cs->set_end(buf+buf_offset+csize); | |
| 481 assert(dest_cs->is_allocated(), "must always be allocated"); | |
| 482 assert(cs->is_empty() == dest_cs->is_empty(), "sanity"); | |
| 483 | |
| 484 buf_offset += csize; | |
| 485 } | |
| 486 | |
| 487 // Done calculating sections; did it come out to the right end? | |
| 1748 | 488 assert(buf_offset == total_content_size(), "sanity"); |
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489 dest->verify_section_allocation(); |
| 0 | 490 } |
| 491 | |
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492 csize_t CodeBuffer::total_offset_of(CodeSection* cs) const { |
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493 csize_t size_so_far = 0; |
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494 for (int n = (int) SECT_FIRST; n < (int) SECT_LIMIT; n++) { |
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495 const CodeSection* cur_cs = code_section(n); |
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496 if (!cur_cs->is_empty()) { |
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497 size_so_far = cur_cs->align_at_start(size_so_far); |
| 0 | 498 } |
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499 if (cur_cs->index() == cs->index()) { |
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500 return size_so_far; |
| 0 | 501 } |
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502 size_so_far += cur_cs->size(); |
| 0 | 503 } |
| 504 ShouldNotReachHere(); | |
| 505 return -1; | |
| 506 } | |
| 507 | |
| 508 csize_t CodeBuffer::total_relocation_size() const { | |
| 509 csize_t lsize = copy_relocations_to(NULL); // dry run only | |
| 1748 | 510 csize_t csize = total_content_size(); |
| 0 | 511 csize_t total = RelocIterator::locs_and_index_size(csize, lsize); |
| 512 return (csize_t) align_size_up(total, HeapWordSize); | |
| 513 } | |
| 514 | |
| 515 csize_t CodeBuffer::copy_relocations_to(CodeBlob* dest) const { | |
| 516 address buf = NULL; | |
| 517 csize_t buf_offset = 0; | |
| 518 csize_t buf_limit = 0; | |
| 519 if (dest != NULL) { | |
| 520 buf = (address)dest->relocation_begin(); | |
| 521 buf_limit = (address)dest->relocation_end() - buf; | |
| 522 assert((uintptr_t)buf % HeapWordSize == 0, "buf must be fully aligned"); | |
| 523 assert(buf_limit % HeapWordSize == 0, "buf must be evenly sized"); | |
| 524 } | |
| 525 // if dest == NULL, this is just the sizing pass | |
| 526 | |
| 527 csize_t code_end_so_far = 0; | |
| 528 csize_t code_point_so_far = 0; | |
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529 for (int n = (int) SECT_FIRST; n < (int)SECT_LIMIT; n++) { |
| 0 | 530 // pull relocs out of each section |
| 531 const CodeSection* cs = code_section(n); | |
| 532 assert(!(cs->is_empty() && cs->locs_count() > 0), "sanity"); | |
| 533 if (cs->is_empty()) continue; // skip trivial section | |
| 534 relocInfo* lstart = cs->locs_start(); | |
| 535 relocInfo* lend = cs->locs_end(); | |
| 536 csize_t lsize = (csize_t)( (address)lend - (address)lstart ); | |
| 537 csize_t csize = cs->size(); | |
| 538 code_end_so_far = cs->align_at_start(code_end_so_far); | |
| 539 | |
| 540 if (lsize > 0) { | |
| 541 // Figure out how to advance the combined relocation point | |
| 542 // first to the beginning of this section. | |
| 543 // We'll insert one or more filler relocs to span that gap. | |
| 544 // (Don't bother to improve this by editing the first reloc's offset.) | |
| 545 csize_t new_code_point = code_end_so_far; | |
| 546 for (csize_t jump; | |
| 547 code_point_so_far < new_code_point; | |
| 548 code_point_so_far += jump) { | |
| 549 jump = new_code_point - code_point_so_far; | |
| 550 relocInfo filler = filler_relocInfo(); | |
| 551 if (jump >= filler.addr_offset()) { | |
| 552 jump = filler.addr_offset(); | |
| 553 } else { // else shrink the filler to fit | |
| 554 filler = relocInfo(relocInfo::none, jump); | |
| 555 } | |
| 556 if (buf != NULL) { | |
| 557 assert(buf_offset + (csize_t)sizeof(filler) <= buf_limit, "filler in bounds"); | |
| 558 *(relocInfo*)(buf+buf_offset) = filler; | |
| 559 } | |
| 560 buf_offset += sizeof(filler); | |
| 561 } | |
| 562 | |
| 563 // Update code point and end to skip past this section: | |
| 564 csize_t last_code_point = code_end_so_far + cs->locs_point_off(); | |
| 565 assert(code_point_so_far <= last_code_point, "sanity"); | |
| 566 code_point_so_far = last_code_point; // advance past this guy's relocs | |
| 567 } | |
| 568 code_end_so_far += csize; // advance past this guy's instructions too | |
| 569 | |
| 570 // Done with filler; emit the real relocations: | |
| 571 if (buf != NULL && lsize != 0) { | |
| 572 assert(buf_offset + lsize <= buf_limit, "target in bounds"); | |
| 573 assert((uintptr_t)lstart % HeapWordSize == 0, "sane start"); | |
| 574 if (buf_offset % HeapWordSize == 0) { | |
| 575 // Use wordwise copies if possible: | |
| 576 Copy::disjoint_words((HeapWord*)lstart, | |
| 577 (HeapWord*)(buf+buf_offset), | |
| 578 (lsize + HeapWordSize-1) / HeapWordSize); | |
| 579 } else { | |
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580 Copy::conjoint_jbytes(lstart, buf+buf_offset, lsize); |
| 0 | 581 } |
| 582 } | |
| 583 buf_offset += lsize; | |
| 584 } | |
| 585 | |
| 586 // Align end of relocation info in target. | |
| 587 while (buf_offset % HeapWordSize != 0) { | |
| 588 if (buf != NULL) { | |
| 589 relocInfo padding = relocInfo(relocInfo::none, 0); | |
| 590 assert(buf_offset + (csize_t)sizeof(padding) <= buf_limit, "padding in bounds"); | |
| 591 *(relocInfo*)(buf+buf_offset) = padding; | |
| 592 } | |
| 593 buf_offset += sizeof(relocInfo); | |
| 594 } | |
| 595 | |
| 1748 | 596 assert(code_end_so_far == total_content_size(), "sanity"); |
| 0 | 597 |
| 598 // Account for index: | |
| 599 if (buf != NULL) { | |
| 600 RelocIterator::create_index(dest->relocation_begin(), | |
| 601 buf_offset / sizeof(relocInfo), | |
| 602 dest->relocation_end()); | |
| 603 } | |
| 604 | |
| 605 return buf_offset; | |
| 606 } | |
| 607 | |
| 608 void CodeBuffer::copy_code_to(CodeBlob* dest_blob) { | |
| 609 #ifndef PRODUCT | |
| 610 if (PrintNMethods && (WizardMode || Verbose)) { | |
| 611 tty->print("done with CodeBuffer:"); | |
| 612 ((CodeBuffer*)this)->print(); | |
| 613 } | |
| 614 #endif //PRODUCT | |
| 615 | |
| 1748 | 616 CodeBuffer dest(dest_blob); |
| 617 assert(dest_blob->content_size() >= total_content_size(), "good sizing"); | |
| 0 | 618 this->compute_final_layout(&dest); |
| 619 relocate_code_to(&dest); | |
| 620 | |
| 621 // transfer comments from buffer to blob | |
| 622 dest_blob->set_comments(_comments); | |
| 623 | |
| 624 // Done moving code bytes; were they the right size? | |
| 1748 | 625 assert(round_to(dest.total_content_size(), oopSize) == dest_blob->content_size(), "sanity"); |
| 0 | 626 |
| 627 // Flush generated code | |
| 1748 | 628 ICache::invalidate_range(dest_blob->code_begin(), dest_blob->code_size()); |
| 0 | 629 } |
| 630 | |
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631 // Move all my code into another code buffer. Consult applicable |
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632 // relocs to repair embedded addresses. The layout in the destination |
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633 // CodeBuffer is different to the source CodeBuffer: the destination |
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634 // CodeBuffer gets the final layout (consts, insts, stubs in order of |
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635 // ascending address). |
| 0 | 636 void CodeBuffer::relocate_code_to(CodeBuffer* dest) const { |
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637 address dest_end = dest->_total_start + dest->_total_size; |
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638 address dest_filled = NULL; |
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639 for (int n = (int) SECT_FIRST; n < (int) SECT_LIMIT; n++) { |
| 0 | 640 // pull code out of each section |
| 641 const CodeSection* cs = code_section(n); | |
| 642 if (cs->is_empty()) continue; // skip trivial section | |
| 643 CodeSection* dest_cs = dest->code_section(n); | |
| 644 assert(cs->size() == dest_cs->size(), "sanity"); | |
| 645 csize_t usize = dest_cs->size(); | |
| 646 csize_t wsize = align_size_up(usize, HeapWordSize); | |
| 647 assert(dest_cs->start() + wsize <= dest_end, "no overflow"); | |
| 648 // Copy the code as aligned machine words. | |
| 649 // This may also include an uninitialized partial word at the end. | |
| 650 Copy::disjoint_words((HeapWord*)cs->start(), | |
| 651 (HeapWord*)dest_cs->start(), | |
| 652 wsize / HeapWordSize); | |
| 653 | |
| 654 if (dest->blob() == NULL) { | |
| 655 // Destination is a final resting place, not just another buffer. | |
| 656 // Normalize uninitialized bytes in the final padding. | |
| 657 Copy::fill_to_bytes(dest_cs->end(), dest_cs->remaining(), | |
| 658 Assembler::code_fill_byte()); | |
| 659 } | |
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660 // Keep track of the highest filled address |
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661 dest_filled = MAX2(dest_filled, dest_cs->end() + dest_cs->remaining()); |
| 0 | 662 |
| 663 assert(cs->locs_start() != (relocInfo*)badAddress, | |
| 664 "this section carries no reloc storage, but reloc was attempted"); | |
| 665 | |
| 666 // Make the new code copy use the old copy's relocations: | |
| 667 dest_cs->initialize_locs_from(cs); | |
| 668 | |
| 669 { // Repair the pc relative information in the code after the move | |
| 670 RelocIterator iter(dest_cs); | |
| 671 while (iter.next()) { | |
| 672 iter.reloc()->fix_relocation_after_move(this, dest); | |
| 673 } | |
| 674 } | |
| 675 } | |
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676 |
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677 if (dest->blob() == NULL) { |
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678 // Destination is a final resting place, not just another buffer. |
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679 // Normalize uninitialized bytes in the final padding. |
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680 Copy::fill_to_bytes(dest_filled, dest_end - dest_filled, |
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681 Assembler::code_fill_byte()); |
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682 |
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683 } |
| 0 | 684 } |
| 685 | |
| 686 csize_t CodeBuffer::figure_expanded_capacities(CodeSection* which_cs, | |
| 687 csize_t amount, | |
| 688 csize_t* new_capacity) { | |
| 689 csize_t new_total_cap = 0; | |
| 690 | |
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691 for (int n = (int) SECT_FIRST; n < (int) SECT_LIMIT; n++) { |
| 0 | 692 const CodeSection* sect = code_section(n); |
| 693 | |
| 694 if (!sect->is_empty()) { | |
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695 // Compute initial padding; assign it to the previous section, |
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696 // even if it's empty (e.g. consts section can be empty). |
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697 // Cf. compute_final_layout |
| 0 | 698 csize_t padding = sect->align_at_start(new_total_cap) - new_total_cap; |
| 699 if (padding != 0) { | |
| 700 new_total_cap += padding; | |
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701 assert(n - 1 >= SECT_FIRST, "sanity"); |
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702 new_capacity[n - 1] += padding; |
| 0 | 703 } |
| 704 } | |
| 705 | |
| 706 csize_t exp = sect->size(); // 100% increase | |
| 707 if ((uint)exp < 4*K) exp = 4*K; // minimum initial increase | |
| 708 if (sect == which_cs) { | |
| 709 if (exp < amount) exp = amount; | |
| 710 if (StressCodeBuffers) exp = amount; // expand only slightly | |
| 711 } else if (n == SECT_INSTS) { | |
| 712 // scale down inst increases to a more modest 25% | |
| 713 exp = 4*K + ((exp - 4*K) >> 2); | |
| 714 if (StressCodeBuffers) exp = amount / 2; // expand only slightly | |
| 715 } else if (sect->is_empty()) { | |
| 716 // do not grow an empty secondary section | |
| 717 exp = 0; | |
| 718 } | |
| 719 // Allow for inter-section slop: | |
| 720 exp += CodeSection::end_slop(); | |
| 721 csize_t new_cap = sect->size() + exp; | |
| 722 if (new_cap < sect->capacity()) { | |
| 723 // No need to expand after all. | |
| 724 new_cap = sect->capacity(); | |
| 725 } | |
| 726 new_capacity[n] = new_cap; | |
| 727 new_total_cap += new_cap; | |
| 728 } | |
| 729 | |
| 730 return new_total_cap; | |
| 731 } | |
| 732 | |
| 733 void CodeBuffer::expand(CodeSection* which_cs, csize_t amount) { | |
| 734 #ifndef PRODUCT | |
| 735 if (PrintNMethods && (WizardMode || Verbose)) { | |
| 736 tty->print("expanding CodeBuffer:"); | |
| 737 this->print(); | |
| 738 } | |
| 739 | |
| 740 if (StressCodeBuffers && blob() != NULL) { | |
| 741 static int expand_count = 0; | |
| 742 if (expand_count >= 0) expand_count += 1; | |
| 743 if (expand_count > 100 && is_power_of_2(expand_count)) { | |
| 744 tty->print_cr("StressCodeBuffers: have expanded %d times", expand_count); | |
| 745 // simulate an occasional allocation failure: | |
| 746 free_blob(); | |
| 747 } | |
| 748 } | |
| 749 #endif //PRODUCT | |
| 750 | |
| 751 // Resizing must be allowed | |
| 752 { | |
| 753 if (blob() == NULL) return; // caller must check for blob == NULL | |
| 754 for (int n = 0; n < (int)SECT_LIMIT; n++) { | |
| 755 guarantee(!code_section(n)->is_frozen(), "resizing not allowed when frozen"); | |
| 756 } | |
| 757 } | |
| 758 | |
| 759 // Figure new capacity for each section. | |
| 760 csize_t new_capacity[SECT_LIMIT]; | |
| 761 csize_t new_total_cap | |
| 762 = figure_expanded_capacities(which_cs, amount, new_capacity); | |
| 763 | |
| 764 // Create a new (temporary) code buffer to hold all the new data | |
| 765 CodeBuffer cb(name(), new_total_cap, 0); | |
| 766 if (cb.blob() == NULL) { | |
| 767 // Failed to allocate in code cache. | |
| 768 free_blob(); | |
| 769 return; | |
| 770 } | |
| 771 | |
| 772 // Create an old code buffer to remember which addresses used to go where. | |
| 773 // This will be useful when we do final assembly into the code cache, | |
| 774 // because we will need to know how to warp any internal address that | |
| 775 // has been created at any time in this CodeBuffer's past. | |
| 776 CodeBuffer* bxp = new CodeBuffer(_total_start, _total_size); | |
| 777 bxp->take_over_code_from(this); // remember the old undersized blob | |
| 778 DEBUG_ONLY(this->_blob = NULL); // silence a later assert | |
| 779 bxp->_before_expand = this->_before_expand; | |
| 780 this->_before_expand = bxp; | |
| 781 | |
| 782 // Give each section its required (expanded) capacity. | |
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783 for (int n = (int)SECT_LIMIT-1; n >= SECT_FIRST; n--) { |
| 0 | 784 CodeSection* cb_sect = cb.code_section(n); |
| 785 CodeSection* this_sect = code_section(n); | |
| 786 if (new_capacity[n] == 0) continue; // already nulled out | |
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787 if (n != SECT_INSTS) { |
| 0 | 788 cb.initialize_section_size(cb_sect, new_capacity[n]); |
| 789 } | |
| 790 assert(cb_sect->capacity() >= new_capacity[n], "big enough"); | |
| 791 address cb_start = cb_sect->start(); | |
| 792 cb_sect->set_end(cb_start + this_sect->size()); | |
| 793 if (this_sect->mark() == NULL) { | |
| 794 cb_sect->clear_mark(); | |
| 795 } else { | |
| 796 cb_sect->set_mark(cb_start + this_sect->mark_off()); | |
| 797 } | |
| 798 } | |
| 799 | |
| 800 // Move all the code and relocations to the new blob: | |
| 801 relocate_code_to(&cb); | |
| 802 | |
| 803 // Copy the temporary code buffer into the current code buffer. | |
| 804 // Basically, do {*this = cb}, except for some control information. | |
| 805 this->take_over_code_from(&cb); | |
| 806 cb.set_blob(NULL); | |
| 807 | |
| 808 // Zap the old code buffer contents, to avoid mistakenly using them. | |
| 809 debug_only(Copy::fill_to_bytes(bxp->_total_start, bxp->_total_size, | |
| 810 badCodeHeapFreeVal)); | |
| 811 | |
| 812 _decode_begin = NULL; // sanity | |
| 813 | |
| 814 // Make certain that the new sections are all snugly inside the new blob. | |
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815 verify_section_allocation(); |
| 0 | 816 |
| 817 #ifndef PRODUCT | |
| 818 if (PrintNMethods && (WizardMode || Verbose)) { | |
| 819 tty->print("expanded CodeBuffer:"); | |
| 820 this->print(); | |
| 821 } | |
| 822 #endif //PRODUCT | |
| 823 } | |
| 824 | |
| 825 void CodeBuffer::take_over_code_from(CodeBuffer* cb) { | |
| 826 // Must already have disposed of the old blob somehow. | |
| 827 assert(blob() == NULL, "must be empty"); | |
| 828 #ifdef ASSERT | |
| 829 | |
| 830 #endif | |
| 831 // Take the new blob away from cb. | |
| 832 set_blob(cb->blob()); | |
| 833 // Take over all the section pointers. | |
| 834 for (int n = 0; n < (int)SECT_LIMIT; n++) { | |
| 835 CodeSection* cb_sect = cb->code_section(n); | |
| 836 CodeSection* this_sect = code_section(n); | |
| 837 this_sect->take_over_code_from(cb_sect); | |
| 838 } | |
| 839 _overflow_arena = cb->_overflow_arena; | |
| 840 // Make sure the old cb won't try to use it or free it. | |
| 841 DEBUG_ONLY(cb->_blob = (BufferBlob*)badAddress); | |
| 842 } | |
| 843 | |
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844 void CodeBuffer::verify_section_allocation() { |
| 0 | 845 address tstart = _total_start; |
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846 if (tstart == badAddress) return; // smashed by set_blob(NULL) |
| 0 | 847 address tend = tstart + _total_size; |
| 848 if (_blob != NULL) { | |
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849 |
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850 guarantee(tstart >= _blob->content_begin(), "sanity"); |
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851 guarantee(tend <= _blob->content_end(), "sanity"); |
| 0 | 852 } |
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853 // Verify disjointness. |
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854 for (int n = (int) SECT_FIRST; n < (int) SECT_LIMIT; n++) { |
| 0 | 855 CodeSection* sect = code_section(n); |
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856 if (!sect->is_allocated() || sect->is_empty()) continue; |
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857 guarantee((intptr_t)sect->start() % sect->alignment() == 0 |
| 0 | 858 || sect->is_empty() || _blob == NULL, |
| 859 "start is aligned"); | |
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860 for (int m = (int) SECT_FIRST; m < (int) SECT_LIMIT; m++) { |
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861 CodeSection* other = code_section(m); |
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862 if (!other->is_allocated() || other == sect) continue; |
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863 guarantee(!other->contains(sect->start() ), "sanity"); |
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864 // limit is an exclusive address and can be the start of another |
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865 // section. |
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866 guarantee(!other->contains(sect->limit() - 1), "sanity"); |
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867 } |
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868 guarantee(sect->end() <= tend, "sanity"); |
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869 guarantee(sect->end() <= sect->limit(), "sanity"); |
| 0 | 870 } |
| 871 } | |
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872 |
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873 void CodeBuffer::log_section_sizes(const char* name) { |
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874 if (xtty != NULL) { |
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875 // log info about buffer usage |
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876 xtty->print_cr("<blob name='%s' size='%d'>", name, _total_size); |
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877 for (int n = (int) CodeBuffer::SECT_FIRST; n < (int) CodeBuffer::SECT_LIMIT; n++) { |
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878 CodeSection* sect = code_section(n); |
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879 if (!sect->is_allocated() || sect->is_empty()) continue; |
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880 xtty->print_cr("<sect index='%d' size='" SIZE_FORMAT "' free='" SIZE_FORMAT "'/>", |
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881 n, sect->limit() - sect->start(), sect->limit() - sect->end()); |
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882 } |
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883 xtty->print_cr("</blob>"); |
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884 } |
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885 } |
| 0 | 886 |
| 887 #ifndef PRODUCT | |
| 888 | |
| 889 void CodeSection::dump() { | |
| 890 address ptr = start(); | |
| 891 for (csize_t step; ptr < end(); ptr += step) { | |
| 892 step = end() - ptr; | |
| 893 if (step > jintSize * 4) step = jintSize * 4; | |
| 894 tty->print(PTR_FORMAT ": ", ptr); | |
| 895 while (step > 0) { | |
| 896 tty->print(" " PTR32_FORMAT, *(jint*)ptr); | |
| 897 ptr += jintSize; | |
| 898 } | |
| 899 tty->cr(); | |
| 900 } | |
| 901 } | |
| 902 | |
| 903 | |
| 904 void CodeSection::decode() { | |
| 905 Disassembler::decode(start(), end()); | |
| 906 } | |
| 907 | |
| 908 | |
| 909 void CodeBuffer::block_comment(intptr_t offset, const char * comment) { | |
| 910 _comments.add_comment(offset, comment); | |
| 911 } | |
| 912 | |
| 6197 | 913 class CodeComment: public CHeapObj<mtCode> { |
| 0 | 914 private: |
| 915 friend class CodeComments; | |
| 916 intptr_t _offset; | |
| 917 const char * _comment; | |
| 918 CodeComment* _next; | |
| 919 | |
| 920 ~CodeComment() { | |
| 921 assert(_next == NULL, "wrong interface for freeing list"); | |
| 6197 | 922 os::free((void*)_comment, mtCode); |
| 0 | 923 } |
| 924 | |
| 925 public: | |
| 926 CodeComment(intptr_t offset, const char * comment) { | |
| 927 _offset = offset; | |
| 6197 | 928 _comment = os::strdup(comment, mtCode); |
| 0 | 929 _next = NULL; |
| 930 } | |
| 931 | |
| 932 intptr_t offset() const { return _offset; } | |
| 933 const char * comment() const { return _comment; } | |
| 934 CodeComment* next() { return _next; } | |
| 935 | |
| 936 void set_next(CodeComment* next) { _next = next; } | |
| 937 | |
| 938 CodeComment* find(intptr_t offset) { | |
| 939 CodeComment* a = this; | |
| 940 while (a != NULL && a->_offset != offset) { | |
| 941 a = a->_next; | |
| 942 } | |
| 943 return a; | |
| 944 } | |
| 945 }; | |
| 946 | |
| 947 | |
| 948 void CodeComments::add_comment(intptr_t offset, const char * comment) { | |
| 949 CodeComment* c = new CodeComment(offset, comment); | |
| 950 CodeComment* insert = NULL; | |
| 951 if (_comments != NULL) { | |
| 952 CodeComment* c = _comments->find(offset); | |
| 953 insert = c; | |
| 954 while (c && c->offset() == offset) { | |
| 955 insert = c; | |
| 956 c = c->next(); | |
| 957 } | |
| 958 } | |
| 959 if (insert) { | |
| 960 // insert after comments with same offset | |
| 961 c->set_next(insert->next()); | |
| 962 insert->set_next(c); | |
| 963 } else { | |
| 964 c->set_next(_comments); | |
| 965 _comments = c; | |
| 966 } | |
| 967 } | |
| 968 | |
| 969 | |
| 970 void CodeComments::assign(CodeComments& other) { | |
| 971 assert(_comments == NULL, "don't overwrite old value"); | |
| 972 _comments = other._comments; | |
| 973 } | |
| 974 | |
| 975 | |
| 976 void CodeComments::print_block_comment(outputStream* stream, intptr_t offset) { | |
| 977 if (_comments != NULL) { | |
| 978 CodeComment* c = _comments->find(offset); | |
| 979 while (c && c->offset() == offset) { | |
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980 stream->bol(); |
| 0 | 981 stream->print(" ;; "); |
| 982 stream->print_cr(c->comment()); | |
| 983 c = c->next(); | |
| 984 } | |
| 985 } | |
| 986 } | |
| 987 | |
| 988 | |
| 989 void CodeComments::free() { | |
| 990 CodeComment* n = _comments; | |
| 991 while (n) { | |
| 992 // unlink the node from the list saving a pointer to the next | |
| 993 CodeComment* p = n->_next; | |
| 994 n->_next = NULL; | |
| 995 delete n; | |
| 996 n = p; | |
| 997 } | |
| 998 _comments = NULL; | |
| 999 } | |
| 1000 | |
| 1001 | |
| 1002 | |
| 1003 void CodeBuffer::decode() { | |
| 1748 | 1004 Disassembler::decode(decode_begin(), insts_end()); |
| 1005 _decode_begin = insts_end(); | |
| 0 | 1006 } |
| 1007 | |
| 1008 | |
| 1009 void CodeBuffer::skip_decode() { | |
| 1748 | 1010 _decode_begin = insts_end(); |
| 0 | 1011 } |
| 1012 | |
| 1013 | |
| 1014 void CodeBuffer::decode_all() { | |
| 1015 for (int n = 0; n < (int)SECT_LIMIT; n++) { | |
| 1016 // dump contents of each section | |
| 1017 CodeSection* cs = code_section(n); | |
| 1018 tty->print_cr("! %s:", code_section_name(n)); | |
| 1019 if (cs != consts()) | |
| 1020 cs->decode(); | |
| 1021 else | |
| 1022 cs->dump(); | |
| 1023 } | |
| 1024 } | |
| 1025 | |
| 1026 | |
| 1027 void CodeSection::print(const char* name) { | |
| 1028 csize_t locs_size = locs_end() - locs_start(); | |
| 1029 tty->print_cr(" %7s.code = " PTR_FORMAT " : " PTR_FORMAT " : " PTR_FORMAT " (%d of %d)%s", | |
| 1030 name, start(), end(), limit(), size(), capacity(), | |
| 1031 is_frozen()? " [frozen]": ""); | |
| 1032 tty->print_cr(" %7s.locs = " PTR_FORMAT " : " PTR_FORMAT " : " PTR_FORMAT " (%d of %d) point=%d", | |
| 1033 name, locs_start(), locs_end(), locs_limit(), locs_size, locs_capacity(), locs_point_off()); | |
| 1034 if (PrintRelocations) { | |
| 1035 RelocIterator iter(this); | |
| 1036 iter.print(); | |
| 1037 } | |
| 1038 } | |
| 1039 | |
| 1040 void CodeBuffer::print() { | |
| 1041 if (this == NULL) { | |
| 1042 tty->print_cr("NULL CodeBuffer pointer"); | |
| 1043 return; | |
| 1044 } | |
| 1045 | |
| 1046 tty->print_cr("CodeBuffer:"); | |
| 1047 for (int n = 0; n < (int)SECT_LIMIT; n++) { | |
| 1048 // print each section | |
| 1049 CodeSection* cs = code_section(n); | |
| 1050 cs->print(code_section_name(n)); | |
| 1051 } | |
| 1052 } | |
| 1053 | |
| 1054 #endif // PRODUCT |