1 /*
2 * Copyright (c) 2023, 2026, Oracle and/or its affiliates. All rights reserved.
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 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 *
23 */
24
25
26 #include "asm/macroAssembler.hpp"
27 #include "cds/aotCacheAccess.hpp"
28 #include "cds/aotMetaspace.hpp"
29 #include "cds/cds_globals.hpp"
30 #include "cds/cdsConfig.hpp"
31 #include "cds/heapShared.hpp"
32 #include "ci/ciUtilities.hpp"
33 #include "classfile/javaAssertions.hpp"
34 #include "code/aotCodeCache.hpp"
35 #include "code/codeCache.hpp"
36 #include "gc/shared/barrierSetAssembler.hpp"
37 #include "gc/shared/barrierSetNMethod.hpp"
38 #include "gc/shared/cardTableBarrierSet.hpp"
39 #include "gc/shared/gcConfig.hpp"
40 #include "logging/logStream.hpp"
41 #include "memory/memoryReserver.hpp"
42 #include "prims/jvmtiThreadState.hpp"
43 #include "prims/upcallLinker.hpp"
44 #include "runtime/deoptimization.hpp"
45 #include "runtime/flags/flagSetting.hpp"
46 #include "runtime/globals_extension.hpp"
47 #include "runtime/icache.hpp"
48 #include "runtime/java.hpp"
49 #include "runtime/mutexLocker.hpp"
50 #include "runtime/os.inline.hpp"
51 #include "runtime/sharedRuntime.hpp"
52 #include "runtime/stubInfo.hpp"
53 #include "runtime/stubRoutines.hpp"
54 #include "utilities/copy.hpp"
55 #ifdef COMPILER1
56 #include "c1/c1_Runtime1.hpp"
57 #endif
58 #ifdef COMPILER2
59 #include "opto/runtime.hpp"
60 #endif
61 #if INCLUDE_G1GC
62 #include "gc/g1/g1BarrierSetRuntime.hpp"
63 #include "gc/g1/g1HeapRegion.hpp"
64 #endif
65 #if INCLUDE_SHENANDOAHGC
66 #include "gc/shenandoah/shenandoahRuntime.hpp"
67 #endif
68 #if INCLUDE_ZGC
69 #include "gc/z/zBarrierSetRuntime.hpp"
70 #endif
71
72 #include <errno.h>
73 #include <sys/stat.h>
74
75 const char* aot_code_entry_kind_name[] = {
76 #define DECL_KIND_STRING(kind) XSTR(kind),
77 DO_AOTCODEENTRY_KIND(DECL_KIND_STRING)
78 #undef DECL_KIND_STRING
79 };
80
81 // Stream to printing AOTCodeCache loading failure.
82 // Print to error channel when -XX:AOTMode is set to "on"
83 static LogStream& load_failure_log() {
84 static LogStream err_stream(LogLevel::Error, LogTagSetMapping<LOG_TAGS(aot, codecache, init)>::tagset());
85 static LogStream dbg_stream(LogLevel::Debug, LogTagSetMapping<LOG_TAGS(aot, codecache, init)>::tagset());
86 if (RequireSharedSpaces) {
87 return err_stream;
88 } else {
89 return dbg_stream;
90 }
91 }
92
93 static void report_load_failure() {
94 if (AbortVMOnAOTCodeFailure) {
95 vm_exit_during_initialization("Unable to use AOT Code Cache.", nullptr);
96 }
97 load_failure_log().print_cr("Unable to use AOT Code Cache.");
98 AOTCodeCache::disable_caching();
99 }
100
101 static void report_store_failure() {
102 if (AbortVMOnAOTCodeFailure) {
103 tty->print_cr("Unable to create AOT Code Cache.");
104 vm_abort(false);
105 }
106 log_error(aot, codecache, exit)("Unable to create AOT Code Cache.");
107 AOTCodeCache::disable_caching();
108 }
109
110 // The sequence of AOT code caching flags and parametters settings.
111 //
112 // 1. The initial AOT code caching flags setting is done
113 // during call to CDSConfig::check_vm_args_consistency().
114 //
115 // 2. The earliest AOT code state check done in compilationPolicy_init()
116 // where we set number of compiler threads for AOT assembly phase.
117 //
118 // 3. We determine presence of AOT code in AOT Cache in
119 // AOTMetaspace::open_static_archive() which is calles
120 // after compilationPolicy_init() but before codeCache_init().
121 //
122 // 4. AOTCodeCache::initialize() is called during universe_init()
123 // and does final AOT state and flags settings.
124 //
125 // 5. Finally AOTCodeCache::init2() is called after universe_init()
126 // when all GC settings are finalized.
127
128 // Next methods determine which action we do with AOT code depending
129 // on phase of AOT process: assembly or production.
130
131 bool AOTCodeCache::is_dumping_adapter() {
132 return AOTAdapterCaching && is_on_for_dump();
133 }
134
135 bool AOTCodeCache::is_using_adapter() {
136 return AOTAdapterCaching && is_on_for_use();
137 }
138
139 bool AOTCodeCache::is_dumping_stub() {
140 return AOTStubCaching && is_on_for_dump();
141 }
142
143 bool AOTCodeCache::is_using_stub() {
144 return AOTStubCaching && is_on_for_use();
145 }
146
147 // Next methods could be called regardless AOT code cache status.
148 // Initially they are called during flags parsing and finilized
149 // in AOTCodeCache::initialize().
150 void AOTCodeCache::enable_caching() {
151 FLAG_SET_ERGO_IF_DEFAULT(AOTStubCaching, true);
152 FLAG_SET_ERGO_IF_DEFAULT(AOTAdapterCaching, true);
153 }
154
155 void AOTCodeCache::disable_caching() {
156 FLAG_SET_ERGO(AOTStubCaching, false);
157 FLAG_SET_ERGO(AOTAdapterCaching, false);
158 }
159
160 bool AOTCodeCache::is_caching_enabled() {
161 return AOTStubCaching || AOTAdapterCaching;
162 }
163
164 static uint32_t encode_id(AOTCodeEntry::Kind kind, int id) {
165 assert(AOTCodeEntry::is_valid_entry_kind(kind), "invalid AOTCodeEntry kind %d", (int)kind);
166 // There can be a conflict of id between an Adapter and *Blob, but that should not cause any functional issue
167 // becasue both id and kind are used to find an entry, and that combination should be unique
168 if (kind == AOTCodeEntry::Adapter) {
169 return id;
170 } else if (kind == AOTCodeEntry::SharedBlob) {
171 assert(StubInfo::is_shared(static_cast<BlobId>(id)), "not a shared blob id %d", id);
172 return id;
173 } else if (kind == AOTCodeEntry::C1Blob) {
174 assert(StubInfo::is_c1(static_cast<BlobId>(id)), "not a c1 blob id %d", id);
175 return id;
176 } else if (kind == AOTCodeEntry::C2Blob) {
177 assert(StubInfo::is_c2(static_cast<BlobId>(id)), "not a c2 blob id %d", id);
178 return id;
179 } else {
180 // kind must be AOTCodeEntry::StubGenBlob
181 assert(StubInfo::is_stubgen(static_cast<BlobId>(id)), "not a stubgen blob id %d", id);
182 return id;
183 }
184 }
185
186 static uint _max_aot_code_size = 0;
187 uint AOTCodeCache::max_aot_code_size() {
188 return _max_aot_code_size;
189 }
190
191 // It is called from AOTMetaspace::initialize_shared_spaces()
192 // which is called from universe_init().
193 // At this point all AOT class linking seetings are finilized
194 // and AOT cache is open so we can map AOT code region.
195 void AOTCodeCache::initialize() {
196 #if defined(ZERO) || !(defined(AMD64) || defined(AARCH64))
197 log_info(aot, codecache, init)("AOT Code Cache is not supported on this platform.");
198 disable_caching();
199 return;
200 #else
201 if (FLAG_IS_DEFAULT(AOTCache)) {
202 log_info(aot, codecache, init)("AOT Code Cache is not used: AOTCache is not specified.");
203 disable_caching();
204 return; // AOTCache must be specified to dump and use AOT code
205 }
206
207 if (VerifyOops) {
208 // Disable AOT stub caching when VerifyOops flag is on.
209 // Verify oops code generated a lot of C strings which overflow
210 // AOT C string table (which has fixed size).
211 // AOT C string table will be reworked later to handle such cases.
212 log_info(aot, codecache, init)("AOT Stub Caching is not supported with VerifyOops.");
213 FLAG_SET_ERGO(AOTStubCaching, false);
214 if (InlineTypePassFieldsAsArgs) {
215 log_info(aot, codecache, init)("AOT Adapter Caching is not supported with VerifyOops + InlineTypePassFieldsAsArgs.");
216 FLAG_SET_ERGO(AOTAdapterCaching, false);
217 }
218 }
219
220 bool is_dumping = false;
221 bool is_using = false;
222 if (CDSConfig::is_dumping_final_static_archive() && CDSConfig::is_dumping_aot_linked_classes()) {
223 is_dumping = true;
224 enable_caching();
225 is_dumping = is_caching_enabled();
226 } else if (CDSConfig::is_using_archive() && CDSConfig::is_using_aot_linked_classes()) {
227 enable_caching();
228 is_using = is_caching_enabled();
229 } else {
230 log_info(aot, codecache, init)("AOT Code Cache is not used: AOT Class Linking is not used.");
231 disable_caching();
232 return; // nothing to do
233 }
234 if (!(is_dumping || is_using)) {
235 disable_caching();
236 return; // AOT code caching disabled on command line
237 }
238 _max_aot_code_size = AOTCodeMaxSize;
239 if (!FLAG_IS_DEFAULT(AOTCodeMaxSize)) {
240 if (!is_aligned(AOTCodeMaxSize, os::vm_allocation_granularity())) {
241 _max_aot_code_size = align_up(AOTCodeMaxSize, os::vm_allocation_granularity());
242 log_debug(aot,codecache,init)("Max AOT Code Cache size is aligned up to %uK", (int)(max_aot_code_size()/K));
243 }
244 }
245 size_t aot_code_size = is_using ? AOTCacheAccess::get_aot_code_region_size() : 0;
246 if (is_using && aot_code_size == 0) {
247 log_info(aot, codecache, init)("AOT Code Cache is empty");
248 disable_caching();
249 return;
250 }
251 if (!open_cache(is_dumping, is_using)) {
252 if (is_using) {
253 report_load_failure();
254 } else {
255 report_store_failure();
256 }
257 return;
258 }
259 if (is_dumping) {
260 FLAG_SET_DEFAULT(ForceUnreachable, true);
261 }
262 FLAG_SET_DEFAULT(DelayCompilerStubsGeneration, false);
263 #endif // defined(AMD64) || defined(AARCH64)
264 }
265
266 static AOTCodeCache* opened_cache = nullptr; // Use this until we verify the cache
267 AOTCodeCache* AOTCodeCache::_cache = nullptr;
268 DEBUG_ONLY( bool AOTCodeCache::_passed_init2 = false; )
269
270 // It is called after universe_init() when all GC settings are finalized.
271 void AOTCodeCache::init2() {
272 DEBUG_ONLY( _passed_init2 = true; )
273 if (opened_cache == nullptr) {
274 return;
275 }
276 if (!opened_cache->verify_config()) {
277 delete opened_cache;
278 opened_cache = nullptr;
279 report_load_failure();
280 return;
281 }
282
283 // initialize aot runtime constants as appropriate to this runtime
284 AOTRuntimeConstants::initialize_from_runtime();
285
286 // initialize the table of external routines so we can save
287 // generated code blobs that reference them
288 AOTCodeAddressTable* table = opened_cache->_table;
289 assert(table != nullptr, "should be initialized already");
290 table->init_extrs();
291
292 // Now cache and address table are ready for AOT code generation
293 _cache = opened_cache;
294 }
295
296 bool AOTCodeCache::open_cache(bool is_dumping, bool is_using) {
297 opened_cache = new AOTCodeCache(is_dumping, is_using);
298 if (opened_cache->failed()) {
299 delete opened_cache;
300 opened_cache = nullptr;
301 return false;
302 }
303 return true;
304 }
305
306 // Called after continuations_init() when continuation stub callouts
307 // have been initialized
308 void AOTCodeCache::init3() {
309 if (opened_cache == nullptr) {
310 return;
311 }
312 // initialize external routines for continuations so we can save
313 // generated continuation blob that references them
314 AOTCodeAddressTable* table = opened_cache->_table;
315 assert(table != nullptr, "should be initialized already");
316 table->init_extrs2();
317 }
318
319 void AOTCodeCache::dump() {
320 if (is_on()) {
321 assert(is_on_for_dump(), "should be called only when dumping AOT code");
322 MutexLocker ml(Compile_lock);
323 _cache->finish_write();
324 }
325 }
326
327 #define DATA_ALIGNMENT HeapWordSize
328
329 AOTCodeCache::AOTCodeCache(bool is_dumping, bool is_using) :
330 _load_header(nullptr),
331 _load_buffer(nullptr),
332 _store_buffer(nullptr),
333 _C_store_buffer(nullptr),
334 _write_position(0),
335 _load_size(0),
336 _store_size(0),
337 _for_use(is_using),
338 _for_dump(is_dumping),
339 _failed(false),
340 _lookup_failed(false),
341 _table(nullptr),
342 _load_entries(nullptr),
343 _search_entries(nullptr),
344 _store_entries(nullptr),
345 _C_strings_buf(nullptr),
346 _store_entries_cnt(0)
347 {
348 // Read header at the begining of cache
349 if (_for_use) {
350 // Read cache
351 size_t load_size = AOTCacheAccess::get_aot_code_region_size();
352 ReservedSpace rs = MemoryReserver::reserve(load_size, mtCode);
353 if (!rs.is_reserved()) {
354 log_warning(aot, codecache, init)("Failed to reserved %u bytes of memory for mapping AOT code region into AOT Code Cache", (uint)load_size);
355 set_failed();
356 return;
357 }
358 if (!AOTCacheAccess::map_aot_code_region(rs)) {
359 log_warning(aot, codecache, init)("Failed to read/mmap cached code region into AOT Code Cache");
360 set_failed();
361 return;
362 }
363
364 _load_size = (uint)load_size;
365 _load_buffer = (char*)rs.base();
366 assert(is_aligned(_load_buffer, DATA_ALIGNMENT), "load_buffer is not aligned");
367 log_debug(aot, codecache, init)("Mapped %u bytes at address " INTPTR_FORMAT " at AOT Code Cache", _load_size, p2i(_load_buffer));
368
369 _load_header = (Header*)addr(0);
370 if (!_load_header->verify(_load_size)) {
371 set_failed();
372 return;
373 }
374 log_info (aot, codecache, init)("Loaded %u AOT code entries from AOT Code Cache", _load_header->entries_count());
375 log_debug(aot, codecache, init)(" Adapters: total=%u", _load_header->adapters_count());
376 log_debug(aot, codecache, init)(" Shared Blobs: total=%u", _load_header->shared_blobs_count());
377 log_debug(aot, codecache, init)(" StubGen Blobs: total=%d", _load_header->stubgen_blobs_count());
378 log_debug(aot, codecache, init)(" C1 Blobs: total=%u", _load_header->C1_blobs_count());
379 log_debug(aot, codecache, init)(" C2 Blobs: total=%u", _load_header->C2_blobs_count());
380 log_debug(aot, codecache, init)(" AOT code cache size: %u bytes", _load_header->cache_size());
381
382 // Read strings
383 load_strings();
384 }
385 if (_for_dump) {
386 _C_store_buffer = NEW_C_HEAP_ARRAY(char, max_aot_code_size() + DATA_ALIGNMENT, mtCode);
387 _store_buffer = align_up(_C_store_buffer, DATA_ALIGNMENT);
388 // Entries allocated at the end of buffer in reverse (as on stack).
389 _store_entries = (AOTCodeEntry*)align_up(_C_store_buffer + max_aot_code_size(), DATA_ALIGNMENT);
390 log_debug(aot, codecache, init)("Allocated store buffer at address " INTPTR_FORMAT " of size %u", p2i(_store_buffer), max_aot_code_size());
391 }
392 _table = new AOTCodeAddressTable();
393 }
394
395 void AOTCodeCache::add_stub_entries(StubId stub_id, address start, GrowableArray<address> *entries, int begin_idx) {
396 EntryId entry_id = StubInfo::entry_base(stub_id);
397 add_stub_entry(entry_id, start);
398 // skip past first entry
399 entry_id = StubInfo::next_in_stub(stub_id, entry_id);
400 // now check for any more entries
401 int count = StubInfo::entry_count(stub_id) - 1;
402 assert(start != nullptr, "invalid start address for stub %s", StubInfo::name(stub_id));
403 assert(entries == nullptr || begin_idx + count <= entries->length(), "sanity");
404 // write any extra entries
405 for (int i = 0; i < count; i++) {
406 assert(entry_id != EntryId::NO_ENTRYID, "not enough entries for stub %s", StubInfo::name(stub_id));
407 address a = entries->at(begin_idx + i);
408 add_stub_entry(entry_id, a);
409 entry_id = StubInfo::next_in_stub(stub_id, entry_id);
410 }
411 assert(entry_id == EntryId::NO_ENTRYID, "too many entries for stub %s", StubInfo::name(stub_id));
412 }
413
414 void AOTCodeCache::add_stub_entry(EntryId entry_id, address a) {
415 if (a != nullptr) {
416 if (_table != nullptr) {
417 log_trace(aot, codecache, stubs)("Publishing stub entry %s at address " INTPTR_FORMAT, StubInfo::name(entry_id), p2i(a));
418 return _table->add_stub_entry(entry_id, a);
419 }
420 }
421 }
422
423 void AOTCodeCache::set_shared_stubs_complete() {
424 AOTCodeAddressTable* table = addr_table();
425 if (table != nullptr) {
426 table->set_shared_stubs_complete();
427 }
428 }
429
430 void AOTCodeCache::set_c1_stubs_complete() {
431 AOTCodeAddressTable* table = addr_table();
432 if (table != nullptr) {
433 table->set_c1_stubs_complete();
434 }
435 }
436
437 void AOTCodeCache::set_c2_stubs_complete() {
438 AOTCodeAddressTable* table = addr_table();
439 if (table != nullptr) {
440 table->set_c2_stubs_complete();
441 }
442 }
443
444 void AOTCodeCache::set_stubgen_stubs_complete() {
445 AOTCodeAddressTable* table = addr_table();
446 if (table != nullptr) {
447 table->set_stubgen_stubs_complete();
448 }
449 }
450
451 void AOTCodeCache::Config::record(uint cpu_features_offset) {
452
453 #define AOTCODECACHE_SAVE_VAR(type, name) _saved_ ## name = name;
454 #define AOTCODECACHE_SAVE_FUN(type, name, fun) _saved_ ## name = fun;
455
456 AOTCODECACHE_CONFIGS_DO(AOTCODECACHE_SAVE_VAR, AOTCODECACHE_SAVE_FUN);
457
458 // Special configs that cannot be checked with macros
459 _compressedOopBase = CompressedOops::base();
460
461 #if defined(X86) && !defined(ZERO)
462 _useUnalignedLoadStores = UseUnalignedLoadStores;
463 #endif
464
465 #if defined(AARCH64) && !defined(ZERO)
466 _avoidUnalignedAccesses = AvoidUnalignedAccesses;
467 #endif
468
469 _cpu_features_offset = cpu_features_offset;
470 }
471
472 bool AOTCodeCache::Config::verify_cpu_features(AOTCodeCache* cache) const {
473 LogStreamHandle(Debug, aot, codecache, init) log;
474 uint offset = _cpu_features_offset;
475 uint cpu_features_size = *(uint *)cache->addr(offset);
476 assert(cpu_features_size == (uint)VM_Version::cpu_features_size(), "must be");
477 offset += sizeof(uint);
478
479 void* cached_cpu_features_buffer = (void *)cache->addr(offset);
480 if (log.is_enabled()) {
481 ResourceMark rm; // required for stringStream::as_string()
482 stringStream ss;
483 VM_Version::get_cpu_features_name(cached_cpu_features_buffer, ss);
484 log.print_cr("CPU features recorded in AOTCodeCache: %s", ss.as_string());
485 }
486
487 if (VM_Version::supports_features(cached_cpu_features_buffer)) {
488 if (log.is_enabled()) {
489 ResourceMark rm; // required for stringStream::as_string()
490 stringStream ss;
491 char* runtime_cpu_features = NEW_RESOURCE_ARRAY(char, VM_Version::cpu_features_size());
492 VM_Version::store_cpu_features(runtime_cpu_features);
493 VM_Version::get_missing_features_name(runtime_cpu_features, cached_cpu_features_buffer, ss);
494 if (!ss.is_empty()) {
495 log.print_cr("Additional runtime CPU features: %s", ss.as_string());
496 }
497 }
498 } else {
499 if (load_failure_log().is_enabled()) {
500 ResourceMark rm; // required for stringStream::as_string()
501 stringStream ss;
502 char* runtime_cpu_features = NEW_RESOURCE_ARRAY(char, VM_Version::cpu_features_size());
503 VM_Version::store_cpu_features(runtime_cpu_features);
504 VM_Version::get_missing_features_name(cached_cpu_features_buffer, runtime_cpu_features, ss);
505 load_failure_log().print_cr("AOT Code Cache disabled: required cpu features are missing: %s", ss.as_string());
506 }
507 return false;
508 }
509 return true;
510 }
511
512 #define AOTCODECACHE_DISABLED_MSG "AOT Code Cache disabled: it was created with %s = "
513
514 // Special case, print "GC = ..." to be more understandable.
515 inline void log_config_mismatch(CollectedHeap::Name saved, CollectedHeap::Name current, const char* name/*unused*/) {
516 load_failure_log().print_cr("AOT Code Cache disabled: it was created with GC = \"%s\" vs current \"%s\"",
517 GCConfig::hs_err_name(saved), GCConfig::hs_err_name(current));
518 }
519
520 inline void log_config_mismatch(bool saved, bool current, const char* name) {
521 load_failure_log().print_cr(AOTCODECACHE_DISABLED_MSG "%s vs current %s", name,
522 saved ? "true" : "false", current ? "true" : "false");
523 }
524
525 inline void log_config_mismatch(int saved, int current, const char* name) {
526 load_failure_log().print_cr(AOTCODECACHE_DISABLED_MSG "%d vs current %d", name, saved, current);
527 }
528
529 inline void log_config_mismatch(uint saved, uint current, const char* name) {
530 load_failure_log().print_cr(AOTCODECACHE_DISABLED_MSG "%u vs current %u", name, saved, current);
531 }
532
533 #ifdef _LP64
534 inline void log_config_mismatch(intx saved, intx current, const char* name) {
535 load_failure_log().print_cr(AOTCODECACHE_DISABLED_MSG "%zd vs current %zd", name, saved, current);
536 }
537
538 inline void log_config_mismatch(uintx saved, uintx current, const char* name) {
539 load_failure_log().print_cr(AOTCODECACHE_DISABLED_MSG "%zu vs current %zu", name, saved, current);
540 }
541 #endif
542
543 template <typename T>
544 bool check_config(T saved, T current, const char* name) {
545 if (saved != current) {
546 log_config_mismatch(saved, current, name);
547 return false;
548 } else {
549 return true;
550 }
551 }
552
553 bool AOTCodeCache::Config::verify(AOTCodeCache* cache) const {
554 // check CPU features before checking flags that may be
555 // auto-configured in response to them
556 if (!verify_cpu_features(cache)) {
557 return false;
558 }
559
560 // Tests for config options which might affect validity of adapters,
561 // stubs or nmethods. Currently we take a pessemistic stand and
562 // drop the whole cache if any of these are changed.
563
564 #define AOTCODECACHE_CHECK_VAR(type, name) \
565 if (!check_config(_saved_ ## name, name, #name)) { return false; }
566 #define AOTCODECACHE_CHECK_FUN(type, name, fun) \
567 if (!check_config(_saved_ ## name, fun, #fun)) { return false; }
568
569 AOTCODECACHE_CONFIGS_DO(AOTCODECACHE_CHECK_VAR, AOTCODECACHE_CHECK_FUN);
570
571 // Special configs that cannot be checked with macros
572
573 if ((_compressedOopBase == nullptr || CompressedOops::base() == nullptr) && (_compressedOopBase != CompressedOops::base())) {
574 load_failure_log().print_cr("AOT Code Cache disabled: incompatible CompressedOops::base(): %p vs current %p",
575 _compressedOopBase, CompressedOops::base());
576 return false;
577 }
578
579 #if defined(X86) && !defined(ZERO)
580 // switching off UseUnalignedLoadStores can affect validity of fill
581 // stubs
582 if (_useUnalignedLoadStores && !UseUnalignedLoadStores) {
583 log_config_mismatch(_useUnalignedLoadStores, UseUnalignedLoadStores, "UseUnalignedLoadStores");
584 return false;
585 }
586 #endif // defined(X86) && !defined(ZERO)
587
588 #if defined(AARCH64) && !defined(ZERO)
589 // switching on AvoidUnalignedAccesses may affect validity of array
590 // copy stubs and nmethods
591 if (!_avoidUnalignedAccesses && AvoidUnalignedAccesses) {
592 log_config_mismatch(_avoidUnalignedAccesses, AvoidUnalignedAccesses, "AvoidUnalignedAccesses");
593 return false;
594 }
595 #endif // defined(AARCH64) && !defined(ZERO)
596
597 return true;
598 }
599
600 bool AOTCodeCache::Header::verify(uint load_size) const {
601 if (_version != AOT_CODE_VERSION) {
602 load_failure_log().print_cr("AOT Code Cache disabled: different AOT Code version %d vs %d recorded in AOT Code header", AOT_CODE_VERSION, _version);
603 return false;
604 }
605 if (load_size < _cache_size) {
606 load_failure_log().print_cr("AOT Code Cache disabled: AOT Code Cache size %d < %d recorded in AOT Code header", load_size, _cache_size);
607 return false;
608 }
609 return true;
610 }
611
612 AOTCodeCache* AOTCodeCache::open_for_use() {
613 if (AOTCodeCache::is_on_for_use()) {
614 return AOTCodeCache::cache();
615 }
616 return nullptr;
617 }
618
619 AOTCodeCache* AOTCodeCache::open_for_dump() {
620 if (AOTCodeCache::is_on_for_dump()) {
621 AOTCodeCache* cache = AOTCodeCache::cache();
622 cache->clear_lookup_failed(); // Reset bit
623 return cache;
624 }
625 return nullptr;
626 }
627
628 void copy_bytes(const char* from, address to, uint size) {
629 assert((int)size > 0, "sanity");
630 memcpy(to, from, size);
631 log_trace(aot, codecache)("Copied %d bytes from " INTPTR_FORMAT " to " INTPTR_FORMAT, size, p2i(from), p2i(to));
632 }
633
634 AOTCodeReader::AOTCodeReader(AOTCodeCache* cache, AOTCodeEntry* entry) {
635 _cache = cache;
636 _entry = entry;
637 _load_buffer = cache->cache_buffer();
638 _read_position = 0;
639 _lookup_failed = false;
640 _name = nullptr;
641 _reloc_data = nullptr;
642 _reloc_count = 0;
643 _oop_maps = nullptr;
644 _entry_kind = AOTCodeEntry::None;
645 _stub_data = nullptr;
646 _id = -1;
647 }
648
649 void AOTCodeReader::set_read_position(uint pos) {
650 if (pos == _read_position) {
651 return;
652 }
653 assert(pos < _cache->load_size(), "offset:%d >= file size:%d", pos, _cache->load_size());
654 _read_position = pos;
655 }
656
657 uint AOTCodeReader::align_read_int() {
658 return align_up(_read_position, sizeof(int));
659 }
660
661 bool AOTCodeCache::set_write_position(uint pos) {
662 if (pos == _write_position) {
663 return true;
664 }
665 if (_store_size < _write_position) {
666 _store_size = _write_position; // Adjust during write
667 }
668 assert(pos < _store_size, "offset:%d >= file size:%d", pos, _store_size);
669 _write_position = pos;
670 return true;
671 }
672
673 static char align_buffer[256] = { 0 };
674
675 bool AOTCodeCache::align_write_bytes(uint alignment) {
676 uint padding = alignment - (_write_position & (alignment - 1));
677 if (padding == alignment) {
678 return true;
679 }
680 uint n = write_bytes((const void*)&align_buffer, padding);
681 if (n != padding) {
682 return false;
683 }
684 log_trace(aot, codecache)("Adjust write alignment to %d bytes in AOT Code Cache", alignment);
685 return true;
686 }
687
688 bool AOTCodeCache::align_write() {
689 // We are not executing code from cache - we copy it by bytes first.
690 // No need for big alignment (or at all).
691 return align_write_bytes(DATA_ALIGNMENT);
692 }
693
694 bool AOTCodeCache::align_write_int() {
695 return align_write_bytes(sizeof(int));
696 }
697
698 // Check to see if AOT code cache has required space to store "nbytes" of data
699 address AOTCodeCache::reserve_bytes(uint nbytes) {
700 assert(for_dump(), "Code Cache file is not created");
701 uint new_position = _write_position + nbytes;
702 if (new_position >= (uint)((char*)_store_entries - _store_buffer)) {
703 log_warning(aot,codecache)("Failed to ensure %d bytes at offset %d in AOT Code Cache. Increase AOTCodeMaxSize.",
704 nbytes, _write_position);
705 set_failed();
706 report_store_failure();
707 return nullptr;
708 }
709 address buffer = (address)(_store_buffer + _write_position);
710 log_trace(aot, codecache)("Reserved %d bytes at offset %d in AOT Code Cache", nbytes, _write_position);
711 _write_position += nbytes;
712 if (_store_size < _write_position) {
713 _store_size = _write_position;
714 }
715 return buffer;
716 }
717
718 uint AOTCodeCache::write_bytes(const void* buffer, uint nbytes) {
719 assert(for_dump(), "Code Cache file is not created");
720 if (nbytes == 0) {
721 return 0;
722 }
723 uint new_position = _write_position + nbytes;
724 if (new_position >= (uint)((char*)_store_entries - _store_buffer)) {
725 log_warning(aot, codecache)("Failed to write %d bytes at offset %d to AOT Code Cache. Increase AOTCodeMaxSize.",
726 nbytes, _write_position);
727 set_failed();
728 report_store_failure();
729 return 0;
730 }
731 copy_bytes((const char* )buffer, (address)(_store_buffer + _write_position), nbytes);
732 log_trace(aot, codecache)("Wrote %d bytes at offset %d to AOT Code Cache", nbytes, _write_position);
733 _write_position += nbytes;
734 if (_store_size < _write_position) {
735 _store_size = _write_position;
736 }
737 return nbytes;
738 }
739
740 void* AOTCodeEntry::operator new(size_t x, AOTCodeCache* cache) {
741 return (void*)(cache->add_entry());
742 }
743
744 static bool check_entry(AOTCodeEntry::Kind kind, uint id, AOTCodeEntry* entry) {
745 if (entry->kind() == kind) {
746 assert(entry->id() == id, "sanity");
747 return true; // Found
748 }
749 return false;
750 }
751
752 AOTCodeEntry* AOTCodeCache::find_entry(AOTCodeEntry::Kind kind, uint id) {
753 assert(_for_use, "sanity");
754 uint count = _load_header->entries_count();
755 if (_load_entries == nullptr) {
756 // Read it
757 _search_entries = (uint*)addr(_load_header->entries_offset()); // [id, index]
758 _load_entries = (AOTCodeEntry*)(_search_entries + 2 * count);
759 log_debug(aot, codecache, init)("Read %d entries table at offset %d from AOT Code Cache", count, _load_header->entries_offset());
760 }
761 // Binary search
762 int l = 0;
763 int h = count - 1;
764 while (l <= h) {
765 int mid = (l + h) >> 1;
766 int ix = mid * 2;
767 uint is = _search_entries[ix];
768 if (is == id) {
769 int index = _search_entries[ix + 1];
770 AOTCodeEntry* entry = &(_load_entries[index]);
771 if (check_entry(kind, id, entry)) {
772 return entry; // Found
773 }
774 // Linear search around to handle id collission
775 for (int i = mid - 1; i >= l; i--) { // search back
776 ix = i * 2;
777 is = _search_entries[ix];
778 if (is != id) {
779 break;
780 }
781 index = _search_entries[ix + 1];
782 AOTCodeEntry* entry = &(_load_entries[index]);
783 if (check_entry(kind, id, entry)) {
784 return entry; // Found
785 }
786 }
787 for (int i = mid + 1; i <= h; i++) { // search forward
788 ix = i * 2;
789 is = _search_entries[ix];
790 if (is != id) {
791 break;
792 }
793 index = _search_entries[ix + 1];
794 AOTCodeEntry* entry = &(_load_entries[index]);
795 if (check_entry(kind, id, entry)) {
796 return entry; // Found
797 }
798 }
799 break; // Not found match
800 } else if (is < id) {
801 l = mid + 1;
802 } else {
803 h = mid - 1;
804 }
805 }
806 return nullptr;
807 }
808
809 extern "C" {
810 static int uint_cmp(const void *i, const void *j) {
811 uint a = *(uint *)i;
812 uint b = *(uint *)j;
813 return a > b ? 1 : a < b ? -1 : 0;
814 }
815 }
816
817 void AOTCodeCache::store_cpu_features(char*& buffer, uint buffer_size) {
818 uint* size_ptr = (uint *)buffer;
819 *size_ptr = buffer_size;
820 buffer += sizeof(uint);
821
822 VM_Version::store_cpu_features(buffer);
823 log_debug(aot, codecache, exit)("CPU features recorded in AOTCodeCache: %s", VM_Version::features_string());
824 buffer += buffer_size;
825 buffer = align_up(buffer, DATA_ALIGNMENT);
826 }
827
828 bool AOTCodeCache::finish_write() {
829 if (!align_write()) {
830 return false;
831 }
832 uint strings_offset = _write_position;
833 int strings_count = store_strings();
834 if (strings_count < 0) {
835 return false;
836 }
837 if (!align_write()) {
838 return false;
839 }
840 uint strings_size = _write_position - strings_offset;
841
842 uint entries_count = 0; // Number of entrant (useful) code entries
843 uint entries_offset = _write_position;
844
845 uint store_count = _store_entries_cnt;
846 if (store_count > 0) {
847 uint header_size = (uint)align_up(sizeof(AOTCodeCache::Header), DATA_ALIGNMENT);
848 uint code_count = store_count;
849 uint search_count = code_count * 2;
850 uint search_size = search_count * sizeof(uint);
851 uint entries_size = (uint)align_up(code_count * sizeof(AOTCodeEntry), DATA_ALIGNMENT); // In bytes
852 // _write_position includes size of code and strings
853 uint code_alignment = code_count * DATA_ALIGNMENT; // We align_up code size when storing it.
854 uint cpu_features_size = VM_Version::cpu_features_size();
855 uint total_cpu_features_size = sizeof(uint) + cpu_features_size; // sizeof(uint) to store cpu_features_size
856 uint total_size = header_size + _write_position + code_alignment + search_size + entries_size +
857 align_up(total_cpu_features_size, DATA_ALIGNMENT);
858 assert(total_size < max_aot_code_size(), "AOT Code size (" UINT32_FORMAT " bytes) is greater than AOTCodeMaxSize(" UINT32_FORMAT " bytes).", total_size, max_aot_code_size());
859
860 // Allocate in AOT Cache buffer
861 char* buffer = (char *)AOTCacheAccess::allocate_aot_code_region(total_size + DATA_ALIGNMENT);
862 char* start = align_up(buffer, DATA_ALIGNMENT);
863 char* current = start + header_size; // Skip header
864
865 uint cpu_features_offset = current - start;
866 store_cpu_features(current, cpu_features_size);
867 assert(is_aligned(current, DATA_ALIGNMENT), "sanity check");
868 assert(current < start + total_size, "sanity check");
869
870 // Create ordered search table for entries [id, index];
871 uint* search = NEW_C_HEAP_ARRAY(uint, search_count, mtCode);
872
873 AOTCodeEntry* entries_address = _store_entries; // Pointer to latest entry
874 uint adapters_count = 0;
875 uint shared_blobs_count = 0;
876 uint stubgen_blobs_count = 0;
877 uint C1_blobs_count = 0;
878 uint C2_blobs_count = 0;
879 uint max_size = 0;
880 // AOTCodeEntry entries were allocated in reverse in store buffer.
881 // Process them in reverse order to cache first code first.
882 for (int i = store_count - 1; i >= 0; i--) {
883 entries_address[i].set_next(nullptr); // clear pointers before storing data
884 uint size = align_up(entries_address[i].size(), DATA_ALIGNMENT);
885 if (size > max_size) {
886 max_size = size;
887 }
888 copy_bytes((_store_buffer + entries_address[i].offset()), (address)current, size);
889 entries_address[i].set_offset(current - start); // New offset
890 current += size;
891 uint n = write_bytes(&(entries_address[i]), sizeof(AOTCodeEntry));
892 if (n != sizeof(AOTCodeEntry)) {
893 FREE_C_HEAP_ARRAY(search);
894 return false;
895 }
896 search[entries_count*2 + 0] = entries_address[i].id();
897 search[entries_count*2 + 1] = entries_count;
898 entries_count++;
899 AOTCodeEntry::Kind kind = entries_address[i].kind();
900 if (kind == AOTCodeEntry::Adapter) {
901 adapters_count++;
902 } else if (kind == AOTCodeEntry::SharedBlob) {
903 shared_blobs_count++;
904 } else if (kind == AOTCodeEntry::StubGenBlob) {
905 stubgen_blobs_count++;
906 } else if (kind == AOTCodeEntry::C1Blob) {
907 C1_blobs_count++;
908 } else if (kind == AOTCodeEntry::C2Blob) {
909 C2_blobs_count++;
910 }
911 }
912 if (entries_count == 0) {
913 log_info(aot, codecache, exit)("AOT Code Cache was not created: no entires");
914 FREE_C_HEAP_ARRAY(search);
915 return true; // Nothing to write
916 }
917 assert(entries_count <= store_count, "%d > %d", entries_count, store_count);
918 // Write strings
919 if (strings_count > 0) {
920 copy_bytes((_store_buffer + strings_offset), (address)current, strings_size);
921 strings_offset = (current - start); // New offset
922 current += strings_size;
923 }
924
925 uint new_entries_offset = (current - start); // New offset
926 // Sort and store search table
927 qsort(search, entries_count, 2*sizeof(uint), uint_cmp);
928 search_size = 2 * entries_count * sizeof(uint);
929 copy_bytes((const char*)search, (address)current, search_size);
930 FREE_C_HEAP_ARRAY(search);
931 current += search_size;
932
933 // Write entries
934 entries_size = entries_count * sizeof(AOTCodeEntry); // New size
935 copy_bytes((_store_buffer + entries_offset), (address)current, entries_size);
936 current += entries_size;
937 uint size = (current - start);
938 assert(size <= total_size, "%d > %d", size , total_size);
939
940 log_debug(aot, codecache, exit)(" Adapters: total=%u", adapters_count);
941 log_debug(aot, codecache, exit)(" Shared Blobs: total=%d", shared_blobs_count);
942 log_debug(aot, codecache, exit)(" StubGen Blobs: total=%d", stubgen_blobs_count);
943 log_debug(aot, codecache, exit)(" C1 Blobs: total=%d", C1_blobs_count);
944 log_debug(aot, codecache, exit)(" C2 Blobs: total=%d", C2_blobs_count);
945 log_debug(aot, codecache, exit)(" AOT code cache size: %u bytes, max entry's size: %u bytes", size, max_size);
946
947 // Finalize header
948 AOTCodeCache::Header* header = (AOTCodeCache::Header*)start;
949 header->init(size, (uint)strings_count, strings_offset,
950 entries_count, new_entries_offset,
951 adapters_count, shared_blobs_count,
952 stubgen_blobs_count, C1_blobs_count,
953 C2_blobs_count, cpu_features_offset);
954
955 log_info(aot, codecache, exit)("Wrote %d AOT code entries to AOT Code Cache", entries_count);
956 }
957 return true;
958 }
959
960 //------------------Store/Load AOT code ----------------------
961
962 bool AOTCodeCache::store_code_blob(CodeBlob& blob, AOTCodeEntry::Kind entry_kind, uint id, const char* name, AOTStubData* stub_data, CodeBuffer* code_buffer) {
963 assert(AOTCodeEntry::is_valid_entry_kind(entry_kind), "invalid entry_kind %d", entry_kind);
964
965 // we only expect stub data and a code buffer for a multi stub blob
966 assert(AOTCodeEntry::is_multi_stub_blob(entry_kind) == (stub_data != nullptr),
967 "entry_kind %d does not match stub_data pointer %p",
968 entry_kind, stub_data);
969
970 assert((stub_data == nullptr) == (code_buffer == nullptr),
971 "stub data and code buffer must both be null or both non null");
972
973 // If this is a stub and the cache is on for either load or dump we
974 // need to insert the stub entries into the AOTCacheAddressTable so
975 // that relocs which refer to entries defined by this blob get
976 // translated correctly.
977 //
978 // Entry insertion needs to be be done up front before writing the
979 // blob because some blobs rely on internal daisy-chain references
980 // from one entry to another.
981 //
982 // Entry insertion also needs to be done even if the cache is open
983 // for use but not for dump. This may be needed when an archived
984 // blob omits some entries -- either because of a config change or a
985 // load failure -- with the result that the entries end up being
986 // generated. These generated entry addresses may be needed to
987 // resolve references from subsequently loaded blobs (for either
988 // stubs or nmethods).
989
990 if (is_on() && AOTCodeEntry::is_blob(entry_kind)) {
991 publish_stub_addresses(blob, (BlobId)id, stub_data);
992 }
993
994 AOTCodeCache* cache = open_for_dump();
995 if (cache == nullptr) {
996 return false;
997 }
998 if (AOTCodeEntry::is_adapter(entry_kind) && !is_dumping_adapter()) {
999 return false;
1000 }
1001 if (AOTCodeEntry::is_blob(entry_kind) && !is_dumping_stub()) {
1002 return false;
1003 }
1004 // we do not currently store C2 stubs because we are seeing weird
1005 // memory errors when loading them -- see JDK-8357593
1006 if (entry_kind == AOTCodeEntry::C2Blob) {
1007 return false;
1008 }
1009 log_debug(aot, codecache, stubs)("Writing blob '%s' (id=%u, kind=%s) to AOT Code Cache", name, id, aot_code_entry_kind_name[entry_kind]);
1010
1011 #ifdef ASSERT
1012 LogStreamHandle(Trace, aot, codecache, stubs) log;
1013 if (log.is_enabled()) {
1014 FlagSetting fs(PrintRelocations, true);
1015 blob.print_on(&log);
1016 }
1017 #endif
1018 // we need to take a lock to prevent race between compiler threads generating AOT code
1019 // and the main thread generating adapter
1020 MutexLocker ml(Compile_lock);
1021 if (!is_on()) {
1022 return false; // AOT code cache was already dumped and closed.
1023 }
1024 if (!cache->align_write()) {
1025 return false;
1026 }
1027 uint entry_position = cache->_write_position;
1028
1029 uint blob_offset = cache->_write_position - entry_position;
1030 // Code blob's size is aligned to oopSize
1031 address archive_buffer = cache->reserve_bytes(blob.size());
1032 if (archive_buffer == nullptr) {
1033 return false;
1034 }
1035 CodeBlob::archive_blob(&blob, archive_buffer);
1036
1037 // For a relocatable code blob its relocations are linked from the
1038 // blob. However, for a non-relocatable (stubgen) blob we only have
1039 // transient relocations attached to the code buffer that are added
1040 // in order to support AOT-load time patching. in either case, we
1041 // need to explicitly save these relocs when storing the blob to the
1042 // archive so we can then reload them and reattach them to either
1043 // the blob or to a code buffer when we reload the blob into a
1044 // production JVM.
1045 //
1046 // Either way we are then in a position to iterate over the relocs
1047 // and AOT patch the ones that refer to code that may move between
1048 // assembly and production time. We also need to save and restore
1049 // AOT address table indexes for the target addresses of affected
1050 // relocs. That happens below.
1051
1052 int reloc_count;
1053 address reloc_data;
1054 if (AOTCodeEntry::is_multi_stub_blob(entry_kind)) {
1055 CodeSection* cs = code_buffer->code_section(CodeBuffer::SECT_INSTS);
1056 reloc_count = (cs->has_locs() ? cs->locs_count() : 0);
1057 reloc_data = (reloc_count > 0 ? (address)cs->locs_start() : nullptr);
1058 } else {
1059 reloc_count = blob.relocation_size() / sizeof(relocInfo);
1060 reloc_data = (address)blob.relocation_begin();
1061 }
1062 uint n = cache->write_bytes(&reloc_count, sizeof(int));
1063 if (n != sizeof(int)) {
1064 return false;
1065 }
1066 if (AOTCodeEntry::is_multi_stub_blob(entry_kind)) {
1067 // align to heap word size before writing the relocs so we can
1068 // install them into a code buffer when they get restored
1069 if (!cache->align_write()) {
1070 return false;
1071 }
1072 }
1073 uint reloc_data_size = (uint)(reloc_count * sizeof(relocInfo));
1074 n = cache->write_bytes(reloc_data, reloc_data_size);
1075 if (n != reloc_data_size) {
1076 return false;
1077 }
1078
1079 bool has_oop_maps = false;
1080 if (blob.oop_maps() != nullptr) {
1081 if (!cache->write_oop_map_set(blob)) {
1082 return false;
1083 }
1084 has_oop_maps = true;
1085 }
1086
1087 // In the case of a multi-stub blob we need to write start, end,
1088 // secondary entries and extras. For any other blob entry addresses
1089 // beyond the blob start will be stored in the blob as offsets.
1090 if (stub_data != nullptr) {
1091 if (!cache->write_stub_data(blob, stub_data)) {
1092 return false;
1093 }
1094 }
1095
1096 // now we have added all the other data we can write details of any
1097 // extra the AOT relocations
1098
1099 bool write_ok = true;
1100 if (AOTCodeEntry::is_multi_stub_blob(entry_kind)) {
1101 if (reloc_count > 0) {
1102 CodeSection* cs = code_buffer->code_section(CodeBuffer::SECT_INSTS);
1103 RelocIterator iter(cs);
1104 write_ok = cache->write_relocations(blob, iter);
1105 }
1106 } else {
1107 RelocIterator iter(&blob);
1108 write_ok = cache->write_relocations(blob, iter);
1109 }
1110
1111 if (!write_ok) {
1112 if (!cache->failed()) {
1113 // We may miss an address in AOT table - skip this code blob.
1114 cache->set_write_position(entry_position);
1115 }
1116 return false;
1117 }
1118
1119 #ifndef PRODUCT
1120 // Write asm remarks after relocation info
1121 if (!cache->write_asm_remarks(blob)) {
1122 return false;
1123 }
1124 if (!cache->write_dbg_strings(blob)) {
1125 return false;
1126 }
1127 #endif /* PRODUCT */
1128
1129 // Write name after code comments
1130 uint name_offset = cache->_write_position - entry_position;
1131 uint name_size = (uint)strlen(name) + 1; // Includes '/0'
1132 n = cache->write_bytes(name, name_size);
1133 if (n != name_size) {
1134 return false;
1135 }
1136
1137 uint entry_size = cache->_write_position - entry_position;
1138
1139 AOTCodeEntry* entry = new(cache) AOTCodeEntry(entry_kind, encode_id(entry_kind, id),
1140 entry_position, entry_size, name_offset, name_size,
1141 blob_offset, has_oop_maps, blob.content_begin());
1142 log_debug(aot, codecache, stubs)("Wrote code blob '%s' (id=%u, kind=%s) to AOT Code Cache", name, id, aot_code_entry_kind_name[entry_kind]);
1143 return true;
1144 }
1145
1146 bool AOTCodeCache::store_code_blob(CodeBlob& blob, AOTCodeEntry::Kind entry_kind, uint id, const char* name) {
1147 assert(!AOTCodeEntry::is_blob(entry_kind),
1148 "wrong entry kind for numeric id %d", id);
1149 return store_code_blob(blob, entry_kind, (uint)id, name, nullptr, nullptr);
1150 }
1151
1152 bool AOTCodeCache::store_code_blob(CodeBlob& blob, AOTCodeEntry::Kind entry_kind, BlobId id) {
1153 assert(AOTCodeEntry::is_single_stub_blob(entry_kind),
1154 "wrong entry kind for blob id %s", StubInfo::name(id));
1155 return store_code_blob(blob, entry_kind, (uint)id, StubInfo::name(id), nullptr, nullptr);
1156 }
1157
1158 bool AOTCodeCache::store_code_blob(CodeBlob& blob, AOTCodeEntry::Kind entry_kind, BlobId id, AOTStubData* stub_data, CodeBuffer* code_buffer) {
1159 assert(AOTCodeEntry::is_multi_stub_blob(entry_kind),
1160 "wrong entry kind for multi stub blob id %s", StubInfo::name(id));
1161 return store_code_blob(blob, entry_kind, (uint)id, StubInfo::name(id), stub_data, code_buffer);
1162 }
1163
1164 bool AOTCodeCache::write_stub_data(CodeBlob &blob, AOTStubData *stub_data) {
1165 if (!align_write_int()) {
1166 return false;
1167 }
1168 BlobId blob_id = stub_data->blob_id();
1169 StubId stub_id = StubInfo::stub_base(blob_id);
1170 address blob_base = blob.code_begin();
1171 int stub_cnt = StubInfo::stub_count(blob_id);
1172 int n;
1173
1174 LogStreamHandle(Trace, aot, codecache, stubs) log;
1175
1176 if (log.is_enabled()) {
1177 log.print_cr("======== Stub data starts at offset %d", _write_position);
1178 }
1179
1180 for (int i = 0; i < stub_cnt; i++, stub_id = StubInfo::next_in_blob(blob_id, stub_id)) {
1181 // for each stub we find in the ranges list we write an int
1182 // sequence <stubid,start,end,N,offset1, ... offsetN> where
1183 //
1184 // - start_pos is the stub start address encoded as a code section offset
1185 //
1186 // - end is the stub end address encoded as an offset from start
1187 //
1188 // - N counts the number of stub-local entries/extras
1189 //
1190 // - offseti is a stub-local entry/extra address encoded as len for
1191 // a null address otherwise as an offset in range [1,len-1]
1192
1193 StubAddrRange& range = stub_data->get_range(i);
1194 GrowableArray<address>& addresses = stub_data->address_array();
1195 int base = range.start_index();
1196 if (base >= 0) {
1197 n = write_bytes(&stub_id, sizeof(StubId));
1198 if (n != sizeof(StubId)) {
1199 return false;
1200 }
1201 address start = addresses.at(base);
1202 assert (blob_base <= start, "sanity");
1203 uint offset = (uint)(start - blob_base);
1204 n = write_bytes(&offset, sizeof(uint));
1205 if (n != sizeof(int)) {
1206 return false;
1207 }
1208 address end = addresses.at(base + 1);
1209 assert (start < end, "sanity");
1210 offset = (uint)(end - start);
1211 n = write_bytes(&offset, sizeof(uint));
1212 if (n != sizeof(int)) {
1213 return false;
1214 }
1215 // write number of secondary and extra entries
1216 int count = range.count() - 2;
1217 n = write_bytes(&count, sizeof(int));
1218 if (n != sizeof(int)) {
1219 return false;
1220 }
1221 for (int j = 0; j < count; j++) {
1222 address next = addresses.at(base + 2 + j);
1223 if (next != nullptr) {
1224 // n.b. This maps next == end to the stub length which
1225 // means we will reconstitute the address as nullptr. That
1226 // happens when we have a handler range covers the end of
1227 // a stub and needs to be handled specially by the client
1228 // that restores the extras.
1229 assert(start <= next && next <= end, "sanity");
1230 offset = (uint)(next - start);
1231 } else {
1232 // this can happen when a stub is not generated or an
1233 // extra is the common handler target
1234 offset = NULL_ADDRESS_MARKER;
1235 }
1236 n = write_bytes(&offset, sizeof(uint));
1237 if (n != sizeof(int)) {
1238 return false;
1239 }
1240 }
1241 if (log.is_enabled()) {
1242 log.print_cr("======== wrote stub %s and %d addresses up to offset %d",
1243 StubInfo::name(stub_id), range.count(), _write_position);
1244 }
1245 }
1246 }
1247 // we should have exhausted all stub ids in the blob
1248 assert(stub_id == StubId::NO_STUBID, "sanity");
1249 // write NO_STUBID as an end marker
1250 n = write_bytes(&stub_id, sizeof(StubId));
1251 if (n != sizeof(StubId)) {
1252 return false;
1253 }
1254
1255 if (log.is_enabled()) {
1256 log.print_cr("======== Stub data ends at offset %d", _write_position);
1257 }
1258
1259 return true;
1260 }
1261
1262 CodeBlob* AOTCodeCache::load_code_blob(AOTCodeEntry::Kind entry_kind, uint id, const char* name, AOTStubData* stub_data) {
1263 AOTCodeCache* cache = open_for_use();
1264 if (cache == nullptr) {
1265 return nullptr;
1266 }
1267 assert(AOTCodeEntry::is_valid_entry_kind(entry_kind), "invalid entry_kind %d", entry_kind);
1268
1269 assert(AOTCodeEntry::is_multi_stub_blob(entry_kind) == (stub_data != nullptr),
1270 "entry_kind %d does not match stub_data pointer %p",
1271 entry_kind, stub_data);
1272
1273 if (AOTCodeEntry::is_adapter(entry_kind) && !is_using_adapter()) {
1274 return nullptr;
1275 }
1276 if (AOTCodeEntry::is_blob(entry_kind) && !is_using_stub()) {
1277 return nullptr;
1278 }
1279 // we do not currently load C2 stubs because we are seeing weird
1280 // memory errors when loading them -- see JDK-8357593
1281 if (entry_kind == AOTCodeEntry::C2Blob) {
1282 return nullptr;
1283 }
1284 log_debug(aot, codecache, stubs)("Reading blob '%s' (id=%u, kind=%s) from AOT Code Cache", name, id, aot_code_entry_kind_name[entry_kind]);
1285
1286 AOTCodeEntry* entry = cache->find_entry(entry_kind, encode_id(entry_kind, id));
1287 if (entry == nullptr) {
1288 return nullptr;
1289 }
1290 AOTCodeReader reader(cache, entry);
1291 CodeBlob* blob = reader.compile_code_blob(name, entry_kind, id, stub_data);
1292
1293 log_debug(aot, codecache, stubs)("%sRead blob '%s' (id=%u, kind=%s) from AOT Code Cache",
1294 (blob == nullptr? "Failed to " : ""), name, id, aot_code_entry_kind_name[entry_kind]);
1295 return blob;
1296 }
1297
1298 CodeBlob* AOTCodeCache::load_code_blob(AOTCodeEntry::Kind entry_kind, uint id, const char* name) {
1299 assert(!AOTCodeEntry::is_blob(entry_kind),
1300 "wrong entry kind for numeric id %d", id);
1301 return load_code_blob(entry_kind, (uint)id, name, nullptr);
1302 }
1303
1304 CodeBlob* AOTCodeCache::load_code_blob(AOTCodeEntry::Kind entry_kind, BlobId id) {
1305 assert(AOTCodeEntry::is_single_stub_blob(entry_kind),
1306 "wrong entry kind for blob id %s", StubInfo::name(id));
1307 return load_code_blob(entry_kind, (uint)id, StubInfo::name(id), nullptr);
1308 }
1309
1310 CodeBlob* AOTCodeCache::load_code_blob(AOTCodeEntry::Kind entry_kind, BlobId id, AOTStubData* stub_data) {
1311 assert(AOTCodeEntry::is_multi_stub_blob(entry_kind),
1312 "wrong entry kind for blob id %s", StubInfo::name(id));
1313 return load_code_blob(entry_kind, (uint)id, StubInfo::name(id), stub_data);
1314 }
1315
1316 CodeBlob* AOTCodeReader::compile_code_blob(const char* name, AOTCodeEntry::Kind entry_kind, int id, AOTStubData* stub_data) {
1317 uint entry_position = _entry->offset();
1318
1319 // Read name
1320 uint name_offset = entry_position + _entry->name_offset();
1321 uint name_size = _entry->name_size(); // Includes '/0'
1322 const char* stored_name = addr(name_offset);
1323
1324 if (strncmp(stored_name, name, (name_size - 1)) != 0) {
1325 log_warning(aot, codecache, stubs)("Saved blob's name '%s' is different from the expected name '%s'",
1326 stored_name, name);
1327 set_lookup_failed(); // Skip this blob
1328 return nullptr;
1329 }
1330 _name = stored_name;
1331
1332 // Read archived code blob and related info
1333 uint offset = entry_position + _entry->blob_offset();
1334 CodeBlob* archived_blob = (CodeBlob*)addr(offset);
1335 offset += archived_blob->size();
1336
1337 _reloc_count = *(int*)addr(offset);
1338 offset += sizeof(int);
1339 if (AOTCodeEntry::is_multi_stub_blob(entry_kind)) {
1340 // position of relocs will have been aligned to heap word size so
1341 // we can install them into a code buffer
1342 offset = align_up(offset, DATA_ALIGNMENT);
1343 }
1344 _reloc_data = (address)addr(offset);
1345 offset += _reloc_count * sizeof(relocInfo);
1346 set_read_position(offset);
1347
1348 if (_entry->has_oop_maps()) {
1349 _oop_maps = read_oop_map_set();
1350 }
1351
1352 // record current context for use by that callback
1353 _stub_data = stub_data;
1354 _entry_kind = entry_kind;
1355 _id = id;
1356
1357 // CodeBlob::restore() calls AOTCodeReader::restore()
1358
1359 CodeBlob* code_blob = CodeBlob::create(archived_blob, this);
1360
1361 if (code_blob == nullptr) { // no space left in CodeCache
1362 return nullptr;
1363 }
1364
1365 #ifdef ASSERT
1366 LogStreamHandle(Trace, aot, codecache, stubs) log;
1367 if (log.is_enabled()) {
1368 FlagSetting fs(PrintRelocations, true);
1369 code_blob->print_on(&log);
1370 }
1371 #endif
1372 return code_blob;
1373 }
1374
1375 void AOTCodeReader::restore(CodeBlob* code_blob) {
1376 precond(AOTCodeCache::is_on_for_use());
1377 precond(_name != nullptr);
1378 precond(_reloc_data != nullptr);
1379
1380 code_blob->set_name(_name);
1381 // Saved relocations need restoring except for the case of a
1382 // multi-stub blob which has no runtime relocations. However, we may
1383 // still have saved some (re-)load time relocs that were attached to
1384 // the generator's code buffer. We don't attach them to the blob but
1385 // they get processed below by fix_relocations.
1386 if (!AOTCodeEntry::is_multi_stub_blob(_entry_kind)) {
1387 code_blob->restore_mutable_data(_reloc_data);
1388 }
1389 code_blob->set_oop_maps(_oop_maps);
1390
1391 // if this is a multi stub blob load its entries
1392 if (AOTCodeEntry::is_blob(_entry_kind)) {
1393 BlobId blob_id = static_cast<BlobId>(_id);
1394 if (StubInfo::is_stubgen(blob_id)) {
1395 assert(_stub_data != nullptr, "sanity");
1396 read_stub_data(code_blob, _stub_data);
1397 }
1398 // publish entries found either in stub_data or as offsets in blob
1399 AOTCodeCache::publish_stub_addresses(*code_blob, blob_id, _stub_data);
1400 }
1401
1402 // Now that all the entry points are in the address table we can
1403 // read all the extra reloc info and fix up any addresses that need
1404 // patching to adjust for a new location in a new JVM. We can be
1405 // sure to correctly update all runtime references, including
1406 // cross-linked stubs that are internally daisy-chained. If
1407 // relocation fails and we have to re-generate any of the stubs then
1408 // the entry points for newly generated stubs will get updated,
1409 // ensuring that any other stubs or nmethods we need to relocate
1410 // will use the correct address.
1411
1412 // if we have a relocatable code blob then the relocs are already
1413 // attached to the blob and we can iterate over it to find the ones
1414 // we need to patch. With a non-relocatable code blob we need to
1415 // wrap it with a CodeBuffer and then reattach the relocs to the
1416 // code buffer.
1417
1418 if (AOTCodeEntry::is_multi_stub_blob(_entry_kind)) {
1419 // the blob doesn't have any proper runtime relocs but we can
1420 // reinstate the AOT-load time relocs we saved from the code
1421 // buffer that generated this blob in a new code buffer and use
1422 // the latter to iterate over them
1423 if (_reloc_count > 0) {
1424 CodeBuffer code_buffer(code_blob);
1425 relocInfo* locs = (relocInfo*)_reloc_data;
1426 code_buffer.insts()->initialize_shared_locs(locs, _reloc_count);
1427 code_buffer.insts()->set_locs_end(locs + _reloc_count);
1428 CodeSection *cs = code_buffer.code_section(CodeBuffer::SECT_INSTS);
1429 RelocIterator reloc_iter(cs);
1430 fix_relocations(code_blob, reloc_iter);
1431 }
1432 } else {
1433 // the AOT-load time relocs will be in the blob's restored relocs
1434 RelocIterator reloc_iter(code_blob);
1435 fix_relocations(code_blob, reloc_iter);
1436 }
1437
1438 #ifndef PRODUCT
1439 code_blob->asm_remarks().init();
1440 read_asm_remarks(code_blob->asm_remarks());
1441 code_blob->dbg_strings().init();
1442 read_dbg_strings(code_blob->dbg_strings());
1443 #endif // PRODUCT
1444 }
1445
1446 void AOTCodeReader::read_stub_data(CodeBlob* code_blob, AOTStubData* stub_data) {
1447 GrowableArray<address>& addresses = stub_data->address_array();
1448 // Read the list of stub ids and associated start, end, secondary
1449 // and extra addresses and install them in the stub data.
1450 //
1451 // Also insert all start and secondary addresses into the AOTCache
1452 // address table so we correctly relocate this blob and any followng
1453 // blobs/nmethods.
1454 //
1455 // n.b. if an error occurs and we need to regenerate any of these
1456 // stubs the address table will be updated as a side-effect of
1457 // regeneration.
1458
1459 address blob_base = code_blob->code_begin();
1460 uint blob_size = (uint)(code_blob->code_end() - blob_base);
1461 uint offset = align_read_int();
1462 LogStreamHandle(Trace, aot, codecache, stubs) log;
1463 if (log.is_enabled()) {
1464 log.print_cr("======== Stub data starts at offset %d", offset);
1465 }
1466 // read stub and entries until we see NO_STUBID
1467 StubId stub_id = *(StubId*)addr(offset); offset += sizeof(StubId);
1468 // we ought to have at least one saved stub in the blob
1469 assert(stub_id != StubId::NO_STUBID, "blob %s contains no stubs!", StubInfo::name(stub_data->blob_id()));
1470 while (stub_id != StubId::NO_STUBID) {
1471 assert(StubInfo::blob(stub_id) == stub_data->blob_id(), "sanity");
1472 int idx = StubInfo::stubgen_offset_in_blob(stub_data->blob_id(), stub_id);
1473 StubAddrRange& range = stub_data->get_range(idx);
1474 // we should only see a stub once
1475 assert(range.start_index() < 0, "repeated entry for stub %s", StubInfo::name(stub_id));
1476 int address_base = addresses.length();
1477 // start is an offset from the blob base
1478 uint start = *(uint*)addr(offset); offset += sizeof(uint);
1479 assert(start < blob_size, "stub %s start offset %d exceeds buffer length %d", StubInfo::name(stub_id), start, blob_size);
1480 address stub_start = blob_base + start;
1481 addresses.append(stub_start);
1482 // end is an offset from the stub start
1483 uint end = *(uint*)addr(offset); offset += sizeof(uint);
1484 assert(start + end <= blob_size, "stub %s end offset %d exceeds remaining buffer length %d", StubInfo::name(stub_id), end, blob_size - start);
1485 addresses.append(stub_start + end);
1486 // read count of secondary entries plus extras
1487 int entries_count = *(int*)addr(offset); offset += sizeof(int);
1488 assert(entries_count >= (StubInfo::entry_count(stub_id) - 1), "not enough entries for %s", StubInfo::name(stub_id));
1489 for (int i = 0; i < entries_count; i++) {
1490 // entry offset is an offset from the stub start less than or
1491 // equal to end
1492 uint entry = *(uint*)addr(offset); offset += sizeof(uint);
1493 if (entry <= end) {
1494 // entry addresses may not address end but extras can
1495 assert(entry < end || i >= StubInfo::entry_count(stub_id),
1496 "entry offset 0x%x exceeds stub length 0x%x for stub %s",
1497 entry, end, StubInfo::name(stub_id));
1498 addresses.append(stub_start + entry);
1499 } else {
1500 // special case: entry encodes a nullptr
1501 assert(entry == AOTCodeCache::NULL_ADDRESS_MARKER, "stub %s entry offset %d lies beyond stub end %d and does not equal NULL_ADDRESS_MARKER", StubInfo::name(stub_id), entry, end);
1502 addresses.append(nullptr);
1503 }
1504 }
1505 if (log.is_enabled()) {
1506 log.print_cr("======== read stub %s and %d addresses up to offset %d",
1507 StubInfo::name(stub_id), 2 + entries_count, offset);
1508 }
1509 range.init_entry(address_base, 2 + entries_count);
1510 // move on to next stub or NO_STUBID
1511 stub_id = *(StubId*)addr(offset); offset += sizeof(StubId);
1512 }
1513 if (log.is_enabled()) {
1514 log.print_cr("======== Stub data ends at offset %d", offset);
1515 }
1516
1517 set_read_position(offset);
1518 }
1519
1520 void AOTCodeCache::publish_external_addresses(GrowableArray<address>& addresses) {
1521 DEBUG_ONLY( _passed_init2 = true; )
1522 if (opened_cache == nullptr) {
1523 return;
1524 }
1525
1526 cache()->_table->add_external_addresses(addresses);
1527 }
1528
1529 void AOTCodeCache::publish_stub_addresses(CodeBlob &code_blob, BlobId blob_id, AOTStubData *stub_data) {
1530 if (stub_data != nullptr) {
1531 // register all entries in stub
1532 assert(StubInfo::stub_count(blob_id) > 1,
1533 "multiple stub data provided for single stub blob %s",
1534 StubInfo::name(blob_id));
1535 assert(blob_id == stub_data->blob_id(),
1536 "blob id %s does not match id in stub data %s",
1537 StubInfo::name(blob_id),
1538 StubInfo::name(stub_data->blob_id()));
1539 // iterate over all stubs in the blob
1540 StubId stub_id = StubInfo::stub_base(blob_id);
1541 int stub_cnt = StubInfo::stub_count(blob_id);
1542 GrowableArray<address>& addresses = stub_data->address_array();
1543 for (int i = 0; i < stub_cnt; i++) {
1544 assert(stub_id != StubId::NO_STUBID, "sanity");
1545 StubAddrRange& range = stub_data->get_range(i);
1546 int base = range.start_index();
1547 if (base >= 0) {
1548 cache()->add_stub_entries(stub_id, addresses.at(base), &addresses, base + 2);
1549 }
1550 stub_id = StubInfo::next_in_blob(blob_id, stub_id);
1551 }
1552 // we should have exhausted all stub ids in the blob
1553 assert(stub_id == StubId::NO_STUBID, "sanity");
1554 } else {
1555 // register entry or entries for a single stub blob
1556 StubId stub_id = StubInfo::stub_base(blob_id);
1557 assert(StubInfo::stub_count(blob_id) == 1,
1558 "multiple stub blob %s provided without stub data",
1559 StubInfo::name(blob_id));
1560 address start = code_blob.code_begin();
1561 if (StubInfo::entry_count(stub_id) == 1) {
1562 assert(!code_blob.is_deoptimization_stub(), "expecting multiple entries for stub %s", StubInfo::name(stub_id));
1563 // register the blob base address as the only entry
1564 cache()->add_stub_entries(stub_id, start);
1565 } else {
1566 assert(code_blob.is_deoptimization_stub(), "only expecting one entry for stub %s", StubInfo::name(stub_id));
1567 DeoptimizationBlob *deopt_blob = code_blob.as_deoptimization_blob();
1568 assert(deopt_blob->unpack() == start, "unexpected offset 0x%x for deopt stub entry", (int)(deopt_blob->unpack() - start));
1569 GrowableArray<address> addresses;
1570 addresses.append(deopt_blob->unpack_with_exception());
1571 addresses.append(deopt_blob->unpack_with_reexecution());
1572 addresses.append(deopt_blob->unpack_with_exception_in_tls());
1573 #if INCLUDE_JVMCI
1574 addresses.append(deopt_blob->uncommon_trap());
1575 addresses.append(deopt_blob->implicit_exception_uncommon_trap());
1576 #endif // INCLUDE_JVMCI
1577 cache()->add_stub_entries(stub_id, start, &addresses, 0);
1578 }
1579 }
1580 }
1581
1582 // ------------ process code and data --------------
1583
1584 // Can't use -1. It is valid value for jump to iteself destination
1585 // used by static call stub: see NativeJump::jump_destination().
1586 #define BAD_ADDRESS_ID -2
1587
1588 bool AOTCodeCache::write_relocations(CodeBlob& code_blob, RelocIterator& iter) {
1589 if (!align_write_int()) {
1590 return false;
1591 }
1592 GrowableArray<uint> reloc_data;
1593 LogStreamHandle(Trace, aot, codecache, reloc) log;
1594 while (iter.next()) {
1595 int idx = reloc_data.append(0); // default value
1596 switch (iter.type()) {
1597 case relocInfo::none:
1598 break;
1599 case relocInfo::runtime_call_type: {
1600 // Record offset of runtime destination
1601 CallRelocation* r = (CallRelocation*)iter.reloc();
1602 address dest = r->destination();
1603 if (dest == r->addr()) { // possible call via trampoline on Aarch64
1604 dest = (address)-1; // do nothing in this case when loading this relocation
1605 }
1606 int id = _table->id_for_address(dest, iter, &code_blob);
1607 if (id == BAD_ADDRESS_ID) {
1608 return false;
1609 }
1610 reloc_data.at_put(idx, id);
1611 break;
1612 }
1613 case relocInfo::runtime_call_w_cp_type:
1614 log_debug(aot, codecache, reloc)("runtime_call_w_cp_type relocation is not implemented");
1615 return false;
1616 case relocInfo::external_word_type: {
1617 // Record offset of runtime target
1618 address target = ((external_word_Relocation*)iter.reloc())->target();
1619 int id = _table->id_for_address(target, iter, &code_blob);
1620 if (id == BAD_ADDRESS_ID) {
1621 return false;
1622 }
1623 reloc_data.at_put(idx, id);
1624 break;
1625 }
1626 case relocInfo::internal_word_type:
1627 break;
1628 case relocInfo::section_word_type:
1629 break;
1630 case relocInfo::post_call_nop_type:
1631 break;
1632 default:
1633 log_debug(aot, codecache, reloc)("relocation %d unimplemented", (int)iter.type());
1634 return false;
1635 break;
1636 }
1637 if (log.is_enabled()) {
1638 iter.print_current_on(&log);
1639 }
1640 }
1641
1642 // Write additional relocation data: uint per relocation
1643 // Write the count first
1644 int count = reloc_data.length();
1645 write_bytes(&count, sizeof(int));
1646 if (log.is_enabled()) {
1647 log.print_cr("======== extra relocations count=%d", count);
1648 log.print( " {");
1649 }
1650 bool first = true;
1651 for (GrowableArrayIterator<uint> iter = reloc_data.begin();
1652 iter != reloc_data.end(); ++iter) {
1653 uint value = *iter;
1654 int n = write_bytes(&value, sizeof(uint));
1655 if (n != sizeof(uint)) {
1656 return false;
1657 }
1658 if (log.is_enabled()) {
1659 if (first) {
1660 first = false;
1661 log.print("%d", value);
1662 } else {
1663 log.print(", %d", value);
1664 }
1665 }
1666 }
1667 if (log.is_enabled()) {
1668 log.print_cr("}");
1669 }
1670 return true;
1671 }
1672
1673 void AOTCodeReader::fix_relocations(CodeBlob *code_blob, RelocIterator& iter) {
1674 uint offset = align_read_int();
1675 int reloc_count = *(int*)addr(offset);
1676 offset += sizeof(int);
1677 uint* reloc_data = (uint*)addr(offset);
1678 offset += (reloc_count * sizeof(uint));
1679 set_read_position(offset);
1680
1681 LogStreamHandle(Trace, aot, codecache, reloc) log;
1682 if (log.is_enabled()) {
1683 log.print_cr("======== extra relocations count=%d", reloc_count);
1684 log.print(" {");
1685 for(int i = 0; i < reloc_count; i++) {
1686 if (i == 0) {
1687 log.print("%d", reloc_data[i]);
1688 } else {
1689 log.print(", %d", reloc_data[i]);
1690 }
1691 }
1692 log.print_cr("}");
1693 }
1694
1695 int j = 0;
1696 while (iter.next()) {
1697 switch (iter.type()) {
1698 case relocInfo::none:
1699 break;
1700 case relocInfo::runtime_call_type: {
1701 address dest = _cache->address_for_id(reloc_data[j]);
1702 if (dest != (address)-1) {
1703 ((CallRelocation*)iter.reloc())->set_destination(dest);
1704 }
1705 break;
1706 }
1707 case relocInfo::runtime_call_w_cp_type:
1708 // this relocation should not be in cache (see write_relocations)
1709 assert(false, "runtime_call_w_cp_type relocation is not implemented");
1710 break;
1711 case relocInfo::external_word_type: {
1712 address target = _cache->address_for_id(reloc_data[j]);
1713 // Add external address to global table
1714 int index = ExternalsRecorder::find_index(target);
1715 // Update index in relocation
1716 Relocation::add_jint(iter.data(), index);
1717 external_word_Relocation* reloc = (external_word_Relocation*)iter.reloc();
1718 assert(reloc->target() == target, "sanity");
1719 reloc->set_value(target); // Patch address in the code
1720 break;
1721 }
1722 case relocInfo::internal_word_type: {
1723 internal_word_Relocation* r = (internal_word_Relocation*)iter.reloc();
1724 r->fix_relocation_after_aot_load(aot_code_entry()->dumptime_content_start_addr(), code_blob->content_begin());
1725 break;
1726 }
1727 case relocInfo::section_word_type: {
1728 section_word_Relocation* r = (section_word_Relocation*)iter.reloc();
1729 r->fix_relocation_after_aot_load(aot_code_entry()->dumptime_content_start_addr(), code_blob->content_begin());
1730 break;
1731 }
1732 case relocInfo::post_call_nop_type:
1733 break;
1734 default:
1735 assert(false,"relocation %d unimplemented", (int)iter.type());
1736 break;
1737 }
1738 if (log.is_enabled()) {
1739 iter.print_current_on(&log);
1740 }
1741 j++;
1742 }
1743 assert(j == reloc_count, "sanity");
1744 }
1745
1746 bool AOTCodeCache::write_oop_map_set(CodeBlob& cb) {
1747 if (!align_write_int()) {
1748 return false;
1749 }
1750 ImmutableOopMapSet* oopmaps = cb.oop_maps();
1751 int oopmaps_size = oopmaps->nr_of_bytes();
1752 if (!write_bytes(&oopmaps_size, sizeof(int))) {
1753 return false;
1754 }
1755 uint n = write_bytes(oopmaps, oopmaps->nr_of_bytes());
1756 if (n != (uint)oopmaps->nr_of_bytes()) {
1757 return false;
1758 }
1759 return true;
1760 }
1761
1762 ImmutableOopMapSet* AOTCodeReader::read_oop_map_set() {
1763 uint offset = align_read_int();
1764 int size = *(int *)addr(offset);
1765 offset += sizeof(int);
1766 ImmutableOopMapSet* oopmaps = (ImmutableOopMapSet *)addr(offset);
1767 offset += size;
1768 set_read_position(offset);
1769 return oopmaps;
1770 }
1771
1772 #ifndef PRODUCT
1773 bool AOTCodeCache::write_asm_remarks(CodeBlob& cb) {
1774 if (!align_write_int()) {
1775 return false;
1776 }
1777 // Write asm remarks
1778 uint* count_ptr = (uint *)reserve_bytes(sizeof(uint));
1779 if (count_ptr == nullptr) {
1780 return false;
1781 }
1782 uint count = 0;
1783 bool result = cb.asm_remarks().iterate([&] (uint offset, const char* str) -> bool {
1784 log_trace(aot, codecache, stubs)("asm remark offset=%d, str='%s'", offset, str);
1785 uint n = write_bytes(&offset, sizeof(uint));
1786 if (n != sizeof(uint)) {
1787 return false;
1788 }
1789 const char* cstr = add_C_string(str);
1790 int id = _table->id_for_C_string((address)cstr);
1791 assert(id != -1, "asm remark string '%s' not found in AOTCodeAddressTable", str);
1792 n = write_bytes(&id, sizeof(int));
1793 if (n != sizeof(int)) {
1794 return false;
1795 }
1796 count += 1;
1797 return true;
1798 });
1799 *count_ptr = count;
1800 return result;
1801 }
1802
1803 void AOTCodeReader::read_asm_remarks(AsmRemarks& asm_remarks) {
1804 // Read asm remarks
1805 uint offset = align_read_int();
1806 uint count = *(uint *)addr(offset);
1807 offset += sizeof(uint);
1808 for (uint i = 0; i < count; i++) {
1809 uint remark_offset = *(uint *)addr(offset);
1810 offset += sizeof(uint);
1811 int remark_string_id = *(uint *)addr(offset);
1812 offset += sizeof(int);
1813 const char* remark = (const char*)_cache->address_for_C_string(remark_string_id);
1814 asm_remarks.insert(remark_offset, remark);
1815 }
1816 set_read_position(offset);
1817 }
1818
1819 bool AOTCodeCache::write_dbg_strings(CodeBlob& cb) {
1820 if (!align_write_int()) {
1821 return false;
1822 }
1823 // Write dbg strings
1824 uint* count_ptr = (uint *)reserve_bytes(sizeof(uint));
1825 if (count_ptr == nullptr) {
1826 return false;
1827 }
1828 uint count = 0;
1829 bool result = cb.dbg_strings().iterate([&] (const char* str) -> bool {
1830 log_trace(aot, codecache, stubs)("dbg string=%s", str);
1831 const char* cstr = add_C_string(str);
1832 int id = _table->id_for_C_string((address)cstr);
1833 assert(id != -1, "db string '%s' not found in AOTCodeAddressTable", str);
1834 uint n = write_bytes(&id, sizeof(int));
1835 if (n != sizeof(int)) {
1836 return false;
1837 }
1838 count += 1;
1839 return true;
1840 });
1841 *count_ptr = count;
1842 return result;
1843 }
1844
1845 void AOTCodeReader::read_dbg_strings(DbgStrings& dbg_strings) {
1846 // Read dbg strings
1847 uint offset = align_read_int();
1848 uint count = *(uint *)addr(offset);
1849 offset += sizeof(uint);
1850 for (uint i = 0; i < count; i++) {
1851 int string_id = *(uint *)addr(offset);
1852 offset += sizeof(int);
1853 const char* str = (const char*)_cache->address_for_C_string(string_id);
1854 dbg_strings.insert(str);
1855 }
1856 set_read_position(offset);
1857 }
1858 #endif // PRODUCT
1859
1860 //======================= AOTCodeAddressTable ===============
1861
1862 // address table ids for generated routine entry adresses, external
1863 // addresses and C string addresses are partitioned into positive
1864 // integer ranges defined by the following positive base and max
1865 // values i.e. [_extrs_base, _extrs_base + _extrs_max -1],
1866 // [_stubs_base, _stubs_base + _stubs_max -1], [_c_str_base,
1867 // _c_str_base + _c_str_max -1],
1868
1869 #define _extrs_max 380
1870 #define _stubs_max static_cast<int>(EntryId::NUM_ENTRYIDS)
1871
1872 #define _extrs_base 0
1873 #define _stubs_base (_extrs_base + _extrs_max)
1874 #define _all_max (_stubs_base + _stubs_max)
1875
1876 // setter for external addresses and string addresses inserts new
1877 // addresses in the order they are encountered them which must remain
1878 // the same across an assembly run and subsequent production run
1879
1880 #define ADD_EXTERNAL_ADDRESS(addr) \
1881 { \
1882 hash_address((address) addr, _extrs_base + _extrs_length); \
1883 _extrs_addr[_extrs_length++] = (address) (addr); \
1884 assert(_extrs_length <= _extrs_max, "increase size"); \
1885 }
1886
1887 // insert into to the address hash table the index of an external
1888 // address or a stub address in the list of external or stub
1889 // addresses, respectively, keyed by the relevant address
1890
1891 void AOTCodeAddressTable::hash_address(address addr, int idx) {
1892 // only do this if we have a non-null address to record and the
1893 // cache is open for dumping
1894 if (addr == nullptr) {
1895 return;
1896 }
1897 // check opened_cache because this can be called before the cache is
1898 // properly initialized and only continue when dumping is enabled
1899 if (opened_cache != nullptr && opened_cache->for_dump()) {
1900 if (_hash_table == nullptr) {
1901 _hash_table = new (mtCode) AOTCodeAddressHashTable();
1902 }
1903 assert(_hash_table->get(addr) == nullptr, "repeated insert of address " INTPTR_FORMAT, p2i(addr));
1904 _hash_table->put(addr, idx);
1905 log_trace(aot, codecache)("Address " INTPTR_FORMAT " inserted into AOT Code Cache address hash table with index '%d'",
1906 p2i(addr), idx);
1907 }
1908 }
1909
1910 static bool initializing_extrs = false;
1911
1912 void AOTCodeAddressTable::init_extrs() {
1913 if (_extrs_complete || initializing_extrs) return; // Done already
1914
1915 initializing_extrs = true;
1916 _extrs_addr = NEW_C_HEAP_ARRAY(address, _extrs_max, mtCode);
1917
1918 _extrs_length = 0;
1919
1920 {
1921 // Required by initial stubs
1922 ADD_EXTERNAL_ADDRESS(SharedRuntime::exception_handler_for_return_address); // used by forward_exception
1923 ADD_EXTERNAL_ADDRESS(CompressedOops::base_addr()); // used by call_stub
1924 ADD_EXTERNAL_ADDRESS(Thread::current); // used by call_stub
1925 ADD_EXTERNAL_ADDRESS(SharedRuntime::throw_StackOverflowError);
1926 ADD_EXTERNAL_ADDRESS(SharedRuntime::throw_delayed_StackOverflowError);
1927 }
1928
1929 // Record addresses of VM runtime methods
1930 ADD_EXTERNAL_ADDRESS(SharedRuntime::fixup_callers_callsite);
1931 ADD_EXTERNAL_ADDRESS(SharedRuntime::handle_wrong_method);
1932 ADD_EXTERNAL_ADDRESS(SharedRuntime::handle_wrong_method_abstract);
1933 ADD_EXTERNAL_ADDRESS(SharedRuntime::handle_wrong_method_ic_miss);
1934 ADD_EXTERNAL_ADDRESS(SharedRuntime::allocate_inline_types);
1935 #if defined(AARCH64) && !defined(ZERO)
1936 ADD_EXTERNAL_ADDRESS(JavaThread::aarch64_get_thread_helper);
1937 ADD_EXTERNAL_ADDRESS(BarrierSetAssembler::patching_epoch_addr());
1938 #endif
1939
1940 #ifndef PRODUCT
1941 ADD_EXTERNAL_ADDRESS(&SharedRuntime::_jbyte_array_copy_ctr); // used by arraycopy stub on arm32 and x86_64
1942 ADD_EXTERNAL_ADDRESS(&SharedRuntime::_jshort_array_copy_ctr); // used by arraycopy stub
1943 ADD_EXTERNAL_ADDRESS(&SharedRuntime::_jint_array_copy_ctr); // used by arraycopy stub
1944 ADD_EXTERNAL_ADDRESS(&SharedRuntime::_jlong_array_copy_ctr); // used by arraycopy stub
1945 ADD_EXTERNAL_ADDRESS(&SharedRuntime::_oop_array_copy_ctr); // used by arraycopy stub
1946 ADD_EXTERNAL_ADDRESS(&SharedRuntime::_checkcast_array_copy_ctr); // used by arraycopy stub
1947 ADD_EXTERNAL_ADDRESS(&SharedRuntime::_unsafe_array_copy_ctr); // used by arraycopy stub
1948 ADD_EXTERNAL_ADDRESS(&SharedRuntime::_generic_array_copy_ctr); // used by arraycopy stub
1949 ADD_EXTERNAL_ADDRESS(&SharedRuntime::_unsafe_set_memory_ctr); // used by arraycopy stub
1950 #endif /* PRODUCT */
1951
1952 ADD_EXTERNAL_ADDRESS(SharedRuntime::enable_stack_reserved_zone);
1953
1954 #if defined(AMD64) && !defined(ZERO)
1955 ADD_EXTERNAL_ADDRESS(SharedRuntime::montgomery_multiply);
1956 ADD_EXTERNAL_ADDRESS(SharedRuntime::montgomery_square);
1957 #endif // defined(AMD64) && !defined(ZERO)
1958
1959 ADD_EXTERNAL_ADDRESS(SharedRuntime::d2f);
1960 ADD_EXTERNAL_ADDRESS(SharedRuntime::d2i);
1961 ADD_EXTERNAL_ADDRESS(SharedRuntime::d2l);
1962 ADD_EXTERNAL_ADDRESS(SharedRuntime::dcos);
1963 ADD_EXTERNAL_ADDRESS(SharedRuntime::dexp);
1964 ADD_EXTERNAL_ADDRESS(SharedRuntime::dlog);
1965 ADD_EXTERNAL_ADDRESS(SharedRuntime::dlog10);
1966 ADD_EXTERNAL_ADDRESS(SharedRuntime::dpow);
1967 #ifndef ZERO
1968 ADD_EXTERNAL_ADDRESS(SharedRuntime::drem);
1969 #endif
1970 ADD_EXTERNAL_ADDRESS(SharedRuntime::dsin);
1971 ADD_EXTERNAL_ADDRESS(SharedRuntime::dtan);
1972 ADD_EXTERNAL_ADDRESS(SharedRuntime::f2i);
1973 ADD_EXTERNAL_ADDRESS(SharedRuntime::f2l);
1974 #ifndef ZERO
1975 ADD_EXTERNAL_ADDRESS(SharedRuntime::frem);
1976 #endif
1977 ADD_EXTERNAL_ADDRESS(SharedRuntime::l2d);
1978 ADD_EXTERNAL_ADDRESS(SharedRuntime::l2f);
1979 ADD_EXTERNAL_ADDRESS(SharedRuntime::ldiv);
1980 ADD_EXTERNAL_ADDRESS(SharedRuntime::lmul);
1981 ADD_EXTERNAL_ADDRESS(SharedRuntime::lrem);
1982
1983 #if INCLUDE_JVMTI
1984 ADD_EXTERNAL_ADDRESS(&JvmtiExport::_should_notify_object_alloc);
1985 #endif /* INCLUDE_JVMTI */
1986
1987 ADD_EXTERNAL_ADDRESS(ThreadIdentifier::unsafe_offset());
1988 // already added
1989 // ADD_EXTERNAL_ADDRESS(Thread::current);
1990
1991 ADD_EXTERNAL_ADDRESS(os::javaTimeMillis);
1992 ADD_EXTERNAL_ADDRESS(os::javaTimeNanos);
1993 #ifndef PRODUCT
1994 ADD_EXTERNAL_ADDRESS(os::breakpoint);
1995 #endif
1996
1997 ADD_EXTERNAL_ADDRESS(StubRoutines::crc_table_addr());
1998 #ifndef PRODUCT
1999 ADD_EXTERNAL_ADDRESS(&SharedRuntime::_partial_subtype_ctr);
2000 #endif
2001
2002 #if INCLUDE_JFR
2003 ADD_EXTERNAL_ADDRESS(JfrIntrinsicSupport::write_checkpoint);
2004 ADD_EXTERNAL_ADDRESS(JfrIntrinsicSupport::return_lease);
2005 #endif
2006
2007 ADD_EXTERNAL_ADDRESS(UpcallLinker::handle_uncaught_exception); // used by upcall_stub_exception_handler
2008
2009 {
2010 // Required by Shared blobs
2011 ADD_EXTERNAL_ADDRESS(Deoptimization::fetch_unroll_info);
2012 ADD_EXTERNAL_ADDRESS(Deoptimization::unpack_frames);
2013 ADD_EXTERNAL_ADDRESS(SafepointSynchronize::handle_polling_page_exception);
2014 ADD_EXTERNAL_ADDRESS(SharedRuntime::resolve_opt_virtual_call_C);
2015 ADD_EXTERNAL_ADDRESS(SharedRuntime::resolve_virtual_call_C);
2016 ADD_EXTERNAL_ADDRESS(SharedRuntime::resolve_static_call_C);
2017 // already added
2018 // ADD_EXTERNAL_ADDRESS(SharedRuntime::throw_delayed_StackOverflowError);
2019 ADD_EXTERNAL_ADDRESS(SharedRuntime::throw_AbstractMethodError);
2020 ADD_EXTERNAL_ADDRESS(SharedRuntime::throw_IncompatibleClassChangeError);
2021 ADD_EXTERNAL_ADDRESS(SharedRuntime::throw_NullPointerException_at_call);
2022 }
2023
2024 #ifdef COMPILER1
2025 {
2026 // Required by C1 blobs
2027 ADD_EXTERNAL_ADDRESS(static_cast<int (*)(oopDesc*)>(SharedRuntime::dtrace_object_alloc));
2028 ADD_EXTERNAL_ADDRESS(SharedRuntime::register_finalizer);
2029 ADD_EXTERNAL_ADDRESS(Runtime1::is_instance_of);
2030 ADD_EXTERNAL_ADDRESS(Runtime1::exception_handler_for_pc);
2031 ADD_EXTERNAL_ADDRESS(Runtime1::check_abort_on_vm_exception);
2032 ADD_EXTERNAL_ADDRESS(Runtime1::new_instance);
2033 ADD_EXTERNAL_ADDRESS(Runtime1::counter_overflow);
2034 ADD_EXTERNAL_ADDRESS(Runtime1::new_type_array);
2035 ADD_EXTERNAL_ADDRESS(Runtime1::new_object_array);
2036 ADD_EXTERNAL_ADDRESS(Runtime1::new_multi_array);
2037 ADD_EXTERNAL_ADDRESS(Runtime1::throw_range_check_exception);
2038 ADD_EXTERNAL_ADDRESS(Runtime1::throw_index_exception);
2039 ADD_EXTERNAL_ADDRESS(Runtime1::throw_div0_exception);
2040 ADD_EXTERNAL_ADDRESS(Runtime1::throw_null_pointer_exception);
2041 ADD_EXTERNAL_ADDRESS(Runtime1::throw_array_store_exception);
2042 ADD_EXTERNAL_ADDRESS(Runtime1::throw_class_cast_exception);
2043 ADD_EXTERNAL_ADDRESS(Runtime1::throw_incompatible_class_change_error);
2044 ADD_EXTERNAL_ADDRESS(Runtime1::monitorenter);
2045 ADD_EXTERNAL_ADDRESS(Runtime1::monitorexit);
2046 ADD_EXTERNAL_ADDRESS(Runtime1::deoptimize);
2047 ADD_EXTERNAL_ADDRESS(Runtime1::access_field_patching);
2048 ADD_EXTERNAL_ADDRESS(Runtime1::move_klass_patching);
2049 ADD_EXTERNAL_ADDRESS(Runtime1::move_mirror_patching);
2050 ADD_EXTERNAL_ADDRESS(Runtime1::move_appendix_patching);
2051 ADD_EXTERNAL_ADDRESS(Runtime1::predicate_failed_trap);
2052 ADD_EXTERNAL_ADDRESS(Runtime1::unimplemented_entry);
2053 ADD_EXTERNAL_ADDRESS(Runtime1::new_null_free_array);
2054 ADD_EXTERNAL_ADDRESS(Runtime1::load_flat_array);
2055 ADD_EXTERNAL_ADDRESS(Runtime1::store_flat_array);
2056 ADD_EXTERNAL_ADDRESS(Runtime1::substitutability_check);
2057 ADD_EXTERNAL_ADDRESS(Runtime1::buffer_inline_args);
2058 ADD_EXTERNAL_ADDRESS(Runtime1::buffer_inline_args_no_receiver);
2059 ADD_EXTERNAL_ADDRESS(Runtime1::throw_identity_exception);
2060 ADD_EXTERNAL_ADDRESS(Runtime1::throw_illegal_monitor_state_exception);
2061 // already added
2062 // ADD_EXTERNAL_ADDRESS(Thread::current);
2063 ADD_EXTERNAL_ADDRESS(CompressedKlassPointers::base_addr());
2064 }
2065 #endif
2066
2067 #ifdef COMPILER2
2068 {
2069 // Required by C2 blobs
2070 ADD_EXTERNAL_ADDRESS(Deoptimization::uncommon_trap);
2071 ADD_EXTERNAL_ADDRESS(OptoRuntime::handle_exception_C);
2072 ADD_EXTERNAL_ADDRESS(OptoRuntime::new_instance_C);
2073 ADD_EXTERNAL_ADDRESS(OptoRuntime::new_array_C);
2074 ADD_EXTERNAL_ADDRESS(OptoRuntime::new_array_nozero_C);
2075 ADD_EXTERNAL_ADDRESS(OptoRuntime::multianewarray2_C);
2076 ADD_EXTERNAL_ADDRESS(OptoRuntime::multianewarray3_C);
2077 ADD_EXTERNAL_ADDRESS(OptoRuntime::multianewarray4_C);
2078 ADD_EXTERNAL_ADDRESS(OptoRuntime::multianewarray5_C);
2079 ADD_EXTERNAL_ADDRESS(OptoRuntime::multianewarrayN_C);
2080 ADD_EXTERNAL_ADDRESS(OptoRuntime::complete_monitor_locking_C);
2081 ADD_EXTERNAL_ADDRESS(OptoRuntime::monitor_notify_C);
2082 ADD_EXTERNAL_ADDRESS(OptoRuntime::monitor_notifyAll_C);
2083 ADD_EXTERNAL_ADDRESS(OptoRuntime::rethrow_C);
2084 ADD_EXTERNAL_ADDRESS(OptoRuntime::slow_arraycopy_C);
2085 ADD_EXTERNAL_ADDRESS(OptoRuntime::register_finalizer_C);
2086 ADD_EXTERNAL_ADDRESS(OptoRuntime::load_unknown_inline_C);
2087 ADD_EXTERNAL_ADDRESS(OptoRuntime::store_unknown_inline_C);
2088 ADD_EXTERNAL_ADDRESS(OptoRuntime::vthread_end_first_transition_C);
2089 ADD_EXTERNAL_ADDRESS(OptoRuntime::vthread_start_final_transition_C);
2090 ADD_EXTERNAL_ADDRESS(OptoRuntime::vthread_start_transition_C);
2091 ADD_EXTERNAL_ADDRESS(OptoRuntime::vthread_end_transition_C);
2092 // already added for
2093 #if defined(AARCH64) && ! defined(PRODUCT)
2094 ADD_EXTERNAL_ADDRESS(JavaThread::verify_cross_modify_fence_failure);
2095 #endif // AARCH64 && !PRODUCT
2096 }
2097 #endif // COMPILER2
2098
2099 #if INCLUDE_G1GC
2100 ADD_EXTERNAL_ADDRESS(G1BarrierSetRuntime::write_ref_field_pre_entry);
2101 ADD_EXTERNAL_ADDRESS(G1BarrierSetRuntime::write_ref_array_pre_narrow_oop_entry); // used by arraycopy stubs
2102 ADD_EXTERNAL_ADDRESS(G1BarrierSetRuntime::write_ref_array_pre_oop_entry); // used by arraycopy stubs
2103 ADD_EXTERNAL_ADDRESS(G1BarrierSetRuntime::write_ref_array_post_entry); // used by arraycopy stubs
2104 ADD_EXTERNAL_ADDRESS(BarrierSetNMethod::nmethod_stub_entry_barrier); // used by method_entry_barrier
2105
2106 #endif
2107 #if INCLUDE_SHENANDOAHGC
2108 ADD_EXTERNAL_ADDRESS(ShenandoahRuntime::write_barrier_pre);
2109 ADD_EXTERNAL_ADDRESS(ShenandoahRuntime::load_reference_barrier_strong);
2110 ADD_EXTERNAL_ADDRESS(ShenandoahRuntime::load_reference_barrier_strong_narrow);
2111 ADD_EXTERNAL_ADDRESS(ShenandoahRuntime::load_reference_barrier_weak);
2112 ADD_EXTERNAL_ADDRESS(ShenandoahRuntime::load_reference_barrier_weak_narrow);
2113 ADD_EXTERNAL_ADDRESS(ShenandoahRuntime::load_reference_barrier_phantom);
2114 ADD_EXTERNAL_ADDRESS(ShenandoahRuntime::load_reference_barrier_phantom_narrow);
2115 ADD_EXTERNAL_ADDRESS(ShenandoahRuntime::arraycopy_barrier_oop);
2116 ADD_EXTERNAL_ADDRESS(ShenandoahRuntime::arraycopy_barrier_narrow_oop);
2117 #endif
2118 #if INCLUDE_ZGC
2119 ADD_EXTERNAL_ADDRESS(ZBarrierSetRuntime::load_barrier_on_oop_field_preloaded_addr());
2120 ADD_EXTERNAL_ADDRESS(ZBarrierSetRuntime::load_barrier_on_oop_field_preloaded_store_good_addr());
2121 ADD_EXTERNAL_ADDRESS(ZBarrierSetRuntime::load_barrier_on_weak_oop_field_preloaded_addr());
2122 ADD_EXTERNAL_ADDRESS(ZBarrierSetRuntime::load_barrier_on_phantom_oop_field_preloaded_addr());
2123 ADD_EXTERNAL_ADDRESS(ZBarrierSetRuntime::no_keepalive_load_barrier_on_weak_oop_field_preloaded_addr());
2124 ADD_EXTERNAL_ADDRESS(ZBarrierSetRuntime::no_keepalive_load_barrier_on_phantom_oop_field_preloaded_addr());
2125 ADD_EXTERNAL_ADDRESS(ZBarrierSetRuntime::store_barrier_on_oop_field_with_healing_addr());
2126 ADD_EXTERNAL_ADDRESS(ZBarrierSetRuntime::store_barrier_on_oop_field_without_healing_addr());
2127 ADD_EXTERNAL_ADDRESS(ZBarrierSetRuntime::no_keepalive_store_barrier_on_oop_field_without_healing_addr());
2128 ADD_EXTERNAL_ADDRESS(ZBarrierSetRuntime::store_barrier_on_native_oop_field_without_healing_addr());
2129 ADD_EXTERNAL_ADDRESS(ZBarrierSetRuntime::load_barrier_on_oop_array_addr());
2130
2131 ADD_EXTERNAL_ADDRESS(ZPointerVectorLoadBadMask);
2132 ADD_EXTERNAL_ADDRESS(ZPointerVectorStoreBadMask);
2133 ADD_EXTERNAL_ADDRESS(ZPointerVectorStoreGoodMask);
2134 #if defined(AMD64)
2135 ADD_EXTERNAL_ADDRESS(&ZPointerLoadShift);
2136 ADD_EXTERNAL_ADDRESS(&ZPointerLoadShiftTable);
2137 #endif
2138 #endif
2139 #ifndef ZERO
2140 #if defined(AMD64) || defined(AARCH64) || defined(RISCV64)
2141 ADD_EXTERNAL_ADDRESS(MacroAssembler::debug64);
2142 #endif // defined(AMD64) || defined(AARCH64) || defined(RISCV64)
2143 #if defined(AMD64)
2144 ADD_EXTERNAL_ADDRESS(warning);
2145 #endif // defined(AMD64)
2146 #endif // ZERO
2147
2148 // addresses of fields in AOT runtime constants area
2149 address* p = AOTRuntimeConstants::field_addresses_list();
2150 while (*p != nullptr) {
2151 address to_add = (address)*p++;
2152 ADD_EXTERNAL_ADDRESS(to_add);
2153 }
2154
2155 log_debug(aot, codecache, init)("External addresses opened and recorded");
2156 // allocate storage for stub entries
2157 _stubs_addr = NEW_C_HEAP_ARRAY(address, _stubs_max, mtCode);
2158 log_debug(aot, codecache, init)("Stub addresses opened");
2159 }
2160
2161 void AOTCodeAddressTable::init_extrs2() {
2162 assert(initializing_extrs && !_extrs_complete,
2163 "invalid sequence for init_extrs2");
2164
2165 {
2166 ADD_EXTERNAL_ADDRESS(Continuation::prepare_thaw); // used by cont_thaw
2167 ADD_EXTERNAL_ADDRESS(Continuation::thaw_entry()); // used by cont_thaw
2168 ADD_EXTERNAL_ADDRESS(ContinuationEntry::thaw_call_pc_address()); // used by cont_preempt_stub
2169 }
2170 _extrs_complete = true;
2171 initializing_extrs = false;
2172 log_debug(aot, codecache, init)("External addresses recorded and closed");
2173 }
2174
2175 void AOTCodeAddressTable::add_external_addresses(GrowableArray<address>& addresses) {
2176 assert(initializing_extrs && !_extrs_complete,
2177 "invalid sequence for add_external_addresses");
2178 for (int i = 0; i < addresses.length(); i++) {
2179 ADD_EXTERNAL_ADDRESS(addresses.at(i));
2180 }
2181 log_debug(aot, codecache, init)("Recorded %d additional external addresses",
2182 addresses.length());
2183 }
2184
2185 void AOTCodeAddressTable::add_stub_entry(EntryId entry_id, address a) {
2186 assert(_extrs_complete || initializing_extrs,
2187 "recording stub entry address before external addresses complete");
2188 assert(!(StubInfo::is_shared(StubInfo::stub(entry_id)) && _shared_stubs_complete), "too late to add shared entry");
2189 assert(!(StubInfo::is_stubgen(StubInfo::stub(entry_id)) && _stubgen_stubs_complete), "too late to add stubgen entry");
2190 assert(!(StubInfo::is_c1(StubInfo::stub(entry_id)) && _c1_stubs_complete), "too late to add c1 entry");
2191 assert(!(StubInfo::is_c2(StubInfo::stub(entry_id)) && _c2_stubs_complete), "too late to add c2 entry");
2192 log_debug(aot, stubs)("Recording address 0x%p for %s entry %s", a, StubInfo::name(StubInfo::stubgroup(entry_id)), StubInfo::name(entry_id));
2193 int idx = static_cast<int>(entry_id);
2194 hash_address(a, _stubs_base + idx);
2195 _stubs_addr[idx] = a;
2196 }
2197
2198 void AOTCodeAddressTable::set_shared_stubs_complete() {
2199 assert(!_shared_stubs_complete, "repeated close for shared stubs!");
2200 _shared_stubs_complete = true;
2201 log_debug(aot, codecache, init)("Shared stubs closed");
2202 }
2203
2204 void AOTCodeAddressTable::set_c1_stubs_complete() {
2205 assert(!_c1_stubs_complete, "repeated close for c1 stubs!");
2206 _c1_stubs_complete = true;
2207 log_debug(aot, codecache, init)("C1 stubs closed");
2208 }
2209
2210 void AOTCodeAddressTable::set_c2_stubs_complete() {
2211 assert(!_c2_stubs_complete, "repeated close for c2 stubs!");
2212 _c2_stubs_complete = true;
2213 log_debug(aot, codecache, init)("C2 stubs closed");
2214 }
2215
2216 void AOTCodeAddressTable::set_stubgen_stubs_complete() {
2217 assert(!_stubgen_stubs_complete, "repeated close for stubgen stubs!");
2218 _stubgen_stubs_complete = true;
2219 log_debug(aot, codecache, init)("StubGen stubs closed");
2220 }
2221
2222 #ifdef PRODUCT
2223 #define MAX_STR_COUNT 200
2224 #else
2225 #define MAX_STR_COUNT 2000
2226 #endif
2227 #define _c_str_max MAX_STR_COUNT
2228 static const int _c_str_base = _all_max;
2229
2230 static const char* _C_strings_in[MAX_STR_COUNT] = {nullptr}; // Incoming strings
2231 static const char* _C_strings[MAX_STR_COUNT] = {nullptr}; // Our duplicates
2232 static int _C_strings_count = 0;
2233 static int _C_strings_s[MAX_STR_COUNT] = {0};
2234 static int _C_strings_id[MAX_STR_COUNT] = {0};
2235 static int _C_strings_used = 0;
2236
2237 void AOTCodeCache::load_strings() {
2238 uint strings_count = _load_header->strings_count();
2239 if (strings_count == 0) {
2240 return;
2241 }
2242 if (strings_count > MAX_STR_COUNT) {
2243 fatal("Invalid strings_count loaded from AOT Code Cache: %d > MAX_STR_COUNT [%d]", strings_count, MAX_STR_COUNT);
2244 return;
2245 }
2246 uint strings_offset = _load_header->strings_offset();
2247 uint* string_lengths = (uint*)addr(strings_offset);
2248 strings_offset += (strings_count * sizeof(uint));
2249 uint strings_size = _load_header->entries_offset() - strings_offset;
2250 // We have to keep cached strings longer than _cache buffer
2251 // because they are refernced from compiled code which may
2252 // still be executed on VM exit after _cache is freed.
2253 char* p = NEW_C_HEAP_ARRAY(char, strings_size+1, mtCode);
2254 memcpy(p, addr(strings_offset), strings_size);
2255 _C_strings_buf = p;
2256 for (uint i = 0; i < strings_count; i++) {
2257 _C_strings[i] = p;
2258 uint len = string_lengths[i];
2259 _C_strings_s[i] = i;
2260 _C_strings_id[i] = i;
2261 log_trace(aot, codecache, stringtable)("load_strings: _C_strings[%d] " INTPTR_FORMAT " '%s'", i, p2i(p), p);
2262 p += len;
2263 }
2264 assert((uint)(p - _C_strings_buf) <= strings_size, "(" INTPTR_FORMAT " - " INTPTR_FORMAT ") = %d > %d ", p2i(p), p2i(_C_strings_buf), (uint)(p - _C_strings_buf), strings_size);
2265 _C_strings_count = strings_count;
2266 _C_strings_used = strings_count;
2267 log_debug(aot, codecache, init)(" Loaded %d C strings of total length %d at offset %d from AOT Code Cache", _C_strings_count, strings_size, strings_offset);
2268 }
2269
2270 int AOTCodeCache::store_strings() {
2271 if (_C_strings_used > 0) {
2272 MutexLocker ml(AOTCodeCStrings_lock, Mutex::_no_safepoint_check_flag);
2273 uint offset = _write_position;
2274 uint length = 0;
2275 uint* lengths = (uint *)reserve_bytes(sizeof(uint) * _C_strings_used);
2276 if (lengths == nullptr) {
2277 return -1;
2278 }
2279 for (int i = 0; i < _C_strings_used; i++) {
2280 const char* str = _C_strings[_C_strings_s[i]];
2281 log_trace(aot, codecache, stringtable)("store_strings: _C_strings[%d] " INTPTR_FORMAT " '%s'", i, p2i(str), str);
2282 uint len = (uint)strlen(str) + 1;
2283 length += len;
2284 assert(len < 1000, "big string: %s", str);
2285 lengths[i] = len;
2286 uint n = write_bytes(str, len);
2287 if (n != len) {
2288 return -1;
2289 }
2290 }
2291 log_debug(aot, codecache, exit)(" Wrote %d C strings of total length %d at offset %d to AOT Code Cache",
2292 _C_strings_used, length, offset);
2293 }
2294 return _C_strings_used;
2295 }
2296
2297 const char* AOTCodeCache::add_C_string(const char* str) {
2298 if (is_on_for_dump() && str != nullptr) {
2299 MutexLocker ml(AOTCodeCStrings_lock, Mutex::_no_safepoint_check_flag);
2300 AOTCodeAddressTable* table = addr_table();
2301 if (table != nullptr) {
2302 return table->add_C_string(str);
2303 }
2304 }
2305 return str;
2306 }
2307
2308 const char* AOTCodeAddressTable::add_C_string(const char* str) {
2309 if (_extrs_complete || initializing_extrs) {
2310 // Check previous strings address
2311 for (int i = 0; i < _C_strings_count; i++) {
2312 if (_C_strings_in[i] == str) {
2313 return _C_strings[i]; // Found previous one - return our duplicate
2314 } else if (strcmp(_C_strings[i], str) == 0) {
2315 return _C_strings[i];
2316 }
2317 }
2318 // Add new one
2319 if (_C_strings_count < MAX_STR_COUNT) {
2320 // Passed in string can be freed and used space become inaccessible.
2321 // Keep original address but duplicate string for future compare.
2322 _C_strings_id[_C_strings_count] = -1; // Init
2323 _C_strings_in[_C_strings_count] = str;
2324 const char* dup = os::strdup(str);
2325 _C_strings[_C_strings_count++] = dup;
2326 log_trace(aot, codecache, stringtable)("add_C_string: [%d] " INTPTR_FORMAT " '%s'", _C_strings_count, p2i(dup), dup);
2327 return dup;
2328 } else {
2329 assert(false, "Number of C strings >= MAX_STR_COUNT");
2330 }
2331 }
2332 return str;
2333 }
2334
2335 int AOTCodeAddressTable::id_for_C_string(address str) {
2336 if (str == nullptr) {
2337 return BAD_ADDRESS_ID;
2338 }
2339 MutexLocker ml(AOTCodeCStrings_lock, Mutex::_no_safepoint_check_flag);
2340 for (int i = 0; i < _C_strings_count; i++) {
2341 if (_C_strings[i] == (const char*)str) { // found
2342 int id = _C_strings_id[i];
2343 if (id >= 0) {
2344 assert(id < _C_strings_used, "%d >= %d", id , _C_strings_used);
2345 return id; // Found recorded
2346 }
2347 log_trace(aot, codecache, stringtable)("id_for_C_string: _C_strings[%d ==> %d] " INTPTR_FORMAT " '%s'", i, _C_strings_used, p2i(str), str);
2348 // Not found in recorded, add new
2349 id = _C_strings_used++;
2350 _C_strings_s[id] = i;
2351 _C_strings_id[i] = id;
2352 return id;
2353 }
2354 }
2355 return BAD_ADDRESS_ID;
2356 }
2357
2358 address AOTCodeAddressTable::address_for_C_string(int idx) {
2359 assert(idx < _C_strings_count, "sanity");
2360 return (address)_C_strings[idx];
2361 }
2362
2363 static int search_address(address addr, address* table, uint length) {
2364 for (int i = 0; i < (int)length; i++) {
2365 if (table[i] == addr) {
2366 return i;
2367 }
2368 }
2369 return BAD_ADDRESS_ID;
2370 }
2371
2372 address AOTCodeAddressTable::address_for_id(int idx) {
2373 assert(_extrs_complete || initializing_extrs, "AOT Code Cache VM runtime addresses table is not complete");
2374 if (idx == -1) {
2375 return (address)-1;
2376 }
2377 uint id = (uint)idx;
2378 // special case for symbols based relative to os::init
2379 if (id > (_c_str_base + _c_str_max)) {
2380 return (address)os::init + idx;
2381 }
2382 if (idx < 0) {
2383 fatal("Incorrect id %d for AOT Code Cache addresses table", id);
2384 return nullptr;
2385 }
2386 // no need to compare unsigned id against 0
2387 if (/* id >= _extrs_base && */ id < _extrs_length) {
2388 return _extrs_addr[id - _extrs_base];
2389 }
2390 if (id >= _stubs_base && id < _c_str_base) {
2391 return _stubs_addr[id - _stubs_base];
2392 }
2393 if (id >= _c_str_base && id < (_c_str_base + (uint)_C_strings_count)) {
2394 return address_for_C_string(id - _c_str_base);
2395 }
2396 fatal("Incorrect id %d for AOT Code Cache addresses table", id);
2397 return nullptr;
2398 }
2399
2400 int AOTCodeAddressTable::id_for_address(address addr, RelocIterator reloc, CodeBlob* code_blob) {
2401 assert(_extrs_complete || initializing_extrs, "AOT Code Cache VM runtime addresses table is not complete");
2402 int id = -1;
2403 if (addr == (address)-1) { // Static call stub has jump to itself
2404 return id;
2405 }
2406 // Check card_table_base address first since it can point to any address
2407 BarrierSet* bs = BarrierSet::barrier_set();
2408 bool is_const_card_table_base = !UseG1GC && !UseShenandoahGC && bs->is_a(BarrierSet::CardTableBarrierSet);
2409 guarantee(!is_const_card_table_base || addr != ci_card_table_address_const(), "sanity");
2410 // fast path for stubs and external addresses
2411 if (_hash_table != nullptr) {
2412 int *result = _hash_table->get(addr);
2413 if (result != nullptr) {
2414 id = *result;
2415 log_trace(aot, codecache)("Address " INTPTR_FORMAT " retrieved from AOT Code Cache address hash table with index '%d'",
2416 p2i(addr), id);
2417 return id;
2418 }
2419 }
2420 // Seach for C string
2421 id = id_for_C_string(addr);
2422 if (id != BAD_ADDRESS_ID) {
2423 return id + _c_str_base;
2424 }
2425 if (StubRoutines::contains(addr) || CodeCache::find_blob(addr) != nullptr) {
2426 // Search for a matching stub entry
2427 id = search_address(addr, _stubs_addr, _stubs_max);
2428 if (id == BAD_ADDRESS_ID) {
2429 StubCodeDesc* desc = StubCodeDesc::desc_for(addr);
2430 if (desc == nullptr) {
2431 desc = StubCodeDesc::desc_for(addr + frame::pc_return_offset);
2432 }
2433 const char* sub_name = (desc != nullptr) ? desc->name() : "<unknown>";
2434 assert(false, "Address " INTPTR_FORMAT " for Stub:%s is missing in AOT Code Cache addresses table", p2i(addr), sub_name);
2435 } else {
2436 return id + _stubs_base;
2437 }
2438 } else {
2439 // Search in runtime functions
2440 id = search_address(addr, _extrs_addr, _extrs_length);
2441 if (id == BAD_ADDRESS_ID) {
2442 ResourceMark rm;
2443 const int buflen = 1024;
2444 char* func_name = NEW_RESOURCE_ARRAY(char, buflen);
2445 int offset = 0;
2446 if (os::dll_address_to_function_name(addr, func_name, buflen, &offset)) {
2447 if (offset > 0) {
2448 // Could be address of C string
2449 uint dist = (uint)pointer_delta(addr, (address)os::init, 1);
2450 log_debug(aot, codecache)("Address " INTPTR_FORMAT " (offset %d) for runtime target '%s' is missing in AOT Code Cache addresses table",
2451 p2i(addr), dist, (const char*)addr);
2452 assert(dist > (uint)(_all_max + MAX_STR_COUNT), "change encoding of distance");
2453 return dist;
2454 }
2455 #ifdef ASSERT
2456 reloc.print_current_on(tty);
2457 code_blob->print_on(tty);
2458 code_blob->print_code_on(tty);
2459 assert(false, "Address " INTPTR_FORMAT " for runtime target '%s+%d' is missing in AOT Code Cache addresses table", p2i(addr), func_name, offset);
2460 #endif
2461 } else {
2462 #ifdef ASSERT
2463 reloc.print_current_on(tty);
2464 code_blob->print_on(tty);
2465 code_blob->print_code_on(tty);
2466 os::find(addr, tty);
2467 assert(false, "Address " INTPTR_FORMAT " for <unknown>/('%s') is missing in AOT Code Cache addresses table", p2i(addr), (const char*)addr);
2468 #endif
2469 }
2470 } else {
2471 return _extrs_base + id;
2472 }
2473 }
2474 return id;
2475 }
2476
2477 AOTRuntimeConstants AOTRuntimeConstants::_aot_runtime_constants;
2478
2479 void AOTRuntimeConstants::initialize_from_runtime() {
2480 BarrierSet* bs = BarrierSet::barrier_set();
2481 address card_table_base = nullptr;
2482 uint grain_shift = 0;
2483 #if INCLUDE_G1GC
2484 if (bs->is_a(BarrierSet::G1BarrierSet)) {
2485 grain_shift = G1HeapRegion::LogOfHRGrainBytes;
2486 } else
2487 #endif
2488 #if INCLUDE_SHENANDOAHGC
2489 if (bs->is_a(BarrierSet::ShenandoahBarrierSet)) {
2490 grain_shift = 0;
2491 } else
2492 #endif
2493 if (bs->is_a(BarrierSet::CardTableBarrierSet)) {
2494 CardTable::CardValue* base = ci_card_table_address_const();
2495 assert(base != nullptr, "unexpected byte_map_base");
2496 card_table_base = base;
2497 CardTableBarrierSet* ctbs = barrier_set_cast<CardTableBarrierSet>(bs);
2498 grain_shift = ctbs->grain_shift();
2499 }
2500 _aot_runtime_constants._card_table_base = card_table_base;
2501 _aot_runtime_constants._grain_shift = grain_shift;
2502 }
2503
2504 address AOTRuntimeConstants::_field_addresses_list[] = {
2505 ((address)&_aot_runtime_constants._card_table_base),
2506 ((address)&_aot_runtime_constants._grain_shift),
2507 nullptr
2508 };
2509
2510 address AOTRuntimeConstants::card_table_base_address() {
2511 assert(UseSerialGC || UseParallelGC, "Only these GCs have constant card table base");
2512 return (address)&_aot_runtime_constants._card_table_base;
2513 }
2514
2515 // This is called after initialize() but before init2()
2516 // and _cache is not set yet.
2517 void AOTCodeCache::print_on(outputStream* st) {
2518 if (opened_cache != nullptr && opened_cache->for_use()) {
2519 st->print_cr("\nAOT Code Cache");
2520 uint count = opened_cache->_load_header->entries_count();
2521 uint* search_entries = (uint*)opened_cache->addr(opened_cache->_load_header->entries_offset()); // [id, index]
2522 AOTCodeEntry* load_entries = (AOTCodeEntry*)(search_entries + 2 * count);
2523
2524 for (uint i = 0; i < count; i++) {
2525 // Use search_entries[] to order ouput
2526 int index = search_entries[2*i + 1];
2527 AOTCodeEntry* entry = &(load_entries[index]);
2528
2529 uint entry_position = entry->offset();
2530 uint name_offset = entry->name_offset() + entry_position;
2531 const char* saved_name = opened_cache->addr(name_offset);
2532
2533 st->print_cr("%4u: %10s idx:%4u Id:%u size=%u '%s'",
2534 i, aot_code_entry_kind_name[entry->kind()], index, entry->id(), entry->size(), saved_name);
2535 }
2536 }
2537 }
2538
2539 // methods for managing entries in multi-stub blobs
2540
2541
2542 AOTStubData::AOTStubData(BlobId blob_id) :
2543 _blob_id(blob_id),
2544 _cached_blob(nullptr),
2545 _stub_cnt(0),
2546 _ranges(nullptr),
2547 _flags(0) {
2548 assert(StubInfo::is_stubgen(blob_id),
2549 "AOTStubData expects a multi-stub blob not %s",
2550 StubInfo::name(blob_id));
2551
2552 // we cannot save or restore preuniversestubs because the cache
2553 // cannot be accessed before initialising the universe
2554 if (blob_id == BlobId::stubgen_preuniverse_id) {
2555 // invalidate any attempt to use this
2556 _flags = INVALID;
2557 return;
2558 }
2559 if (AOTCodeCache::is_on()) {
2560 _flags = OPEN;
2561 // allow update of stub entry addresses
2562 if (AOTCodeCache::is_using_stub()) {
2563 // allow stub loading
2564 _flags |= USING;
2565 }
2566 if (AOTCodeCache::is_dumping_stub()) {
2567 // allow stub saving
2568 _flags |= DUMPING;
2569 }
2570 // we need to track all the blob's entries
2571 _stub_cnt = StubInfo::stub_count(_blob_id);
2572 _ranges = NEW_C_HEAP_ARRAY(StubAddrRange, _stub_cnt, mtCode);
2573 for (int i = 0; i < _stub_cnt; i++) {
2574 _ranges[i].default_init();
2575 }
2576 }
2577 }
2578
2579 bool AOTStubData::load_code_blob() {
2580 assert(is_using(), "should not call");
2581 assert(!is_invalid() && _cached_blob == nullptr, "repeated init");
2582 _cached_blob = AOTCodeCache::load_code_blob(AOTCodeEntry::StubGenBlob,
2583 _blob_id,
2584 this);
2585 if (_cached_blob == nullptr) {
2586 set_invalid();
2587 return false;
2588 } else {
2589 return true;
2590 }
2591 }
2592
2593 bool AOTStubData::store_code_blob(CodeBlob& new_blob, CodeBuffer *code_buffer) {
2594 assert(is_dumping(), "should not call");
2595 assert(_cached_blob == nullptr, "should not be loading and storing!");
2596 if (!AOTCodeCache::store_code_blob(new_blob,
2597 AOTCodeEntry::StubGenBlob,
2598 _blob_id, this, code_buffer)) {
2599 set_invalid();
2600 return false;
2601 } else {
2602 return true;
2603 }
2604 }
2605
2606 address AOTStubData::load_archive_data(StubId stub_id, address& end, GrowableArray<address>* entries, GrowableArray<address>* extras) {
2607 assert(StubInfo::blob(stub_id) == _blob_id, "sanity check");
2608 if (is_invalid()) {
2609 return nullptr;
2610 }
2611 int idx = StubInfo::stubgen_offset_in_blob(_blob_id, stub_id);
2612 assert(idx >= 0 && idx < _stub_cnt, "invalid index %d for stub count %d", idx, _stub_cnt);
2613 // ensure we have a valid associated range
2614 StubAddrRange &range = _ranges[idx];
2615 int base = range.start_index();
2616 if (base < 0) {
2617 #ifdef DEBUG
2618 // reset index so we can idenitfy which ones we failed to find
2619 range.init_entry(-2, 0);
2620 #endif
2621 return nullptr;
2622 }
2623 int count = range.count();
2624 assert(base >= 0, "sanity");
2625 assert(count >= 2, "sanity");
2626 // first two saved addresses are start and end
2627 address start = _address_array.at(base);
2628 end = _address_array.at(base + 1);
2629 assert(start != nullptr, "failed to load start address of stub %s", StubInfo::name(stub_id));
2630 assert(end != nullptr, "failed to load end address of stub %s", StubInfo::name(stub_id));
2631 assert(start < end, "start address %p should be less than end %p address for stub %s", start, end, StubInfo::name(stub_id));
2632
2633 int entry_count = StubInfo::entry_count(stub_id);
2634 // the address count must at least include the stub start, end
2635 // and secondary addresses
2636 assert(count >= entry_count + 1, "stub %s requires %d saved addresses but only has %d", StubInfo::name(stub_id), entry_count + 1, count);
2637
2638 // caller must retrieve secondary entries if and only if they exist
2639 assert((entry_count == 1) == (entries == nullptr), "trying to retrieve wrong number of entries for stub %s", StubInfo::name(stub_id));
2640 int index = 2;
2641 if (entries != nullptr) {
2642 assert(entries->length() == 0, "non-empty array when retrieving entries for stub %s!", StubInfo::name(stub_id));
2643 while (index < entry_count + 1) {
2644 address entry = _address_array.at(base + index++);
2645 assert(entry == nullptr || (start < entry && entry < end), "entry address %p not in range (%p, %p) for stub %s", entry, start, end, StubInfo::name(stub_id));
2646 entries->append(entry);
2647 }
2648 }
2649 // caller must retrieve extras if and only if they exist
2650 assert((index < count) == (extras != nullptr), "trying to retrieve wrong number of extras for stub %s", StubInfo::name(stub_id));
2651 if (extras != nullptr) {
2652 assert(extras->length() == 0, "non-empty array when retrieving extras for stub %s!", StubInfo::name(stub_id));
2653 while (index < count) {
2654 address extra = _address_array.at(base + index++);
2655 assert(extra == nullptr || (start <= extra && extra <= end), "extra address %p not in range (%p, %p) for stub %s", extra, start, end, StubInfo::name(stub_id));
2656 extras->append(extra);
2657 }
2658 }
2659
2660 return start;
2661 }
2662
2663 void AOTStubData::store_archive_data(StubId stub_id, address start, address end, GrowableArray<address>* entries, GrowableArray<address>* extras) {
2664 assert(StubInfo::blob(stub_id) == _blob_id, "sanity check");
2665 assert(start != nullptr, "start address cannot be null");
2666 assert(end != nullptr, "end address cannot be null");
2667 assert(start < end, "start address %p should be less than end %p address for stub %s", start, end, StubInfo::name(stub_id));
2668 int idx = StubInfo::stubgen_offset_in_blob(_blob_id, stub_id);
2669 StubAddrRange& range = _ranges[idx];
2670 assert(range.start_index() == -1, "sanity");
2671 int base = _address_array.length();
2672 assert(base >= 0, "sanity");
2673 // first two saved addresses are start and end
2674 _address_array.append(start);
2675 _address_array.append(end);
2676 // caller must save secondary entries if and only if they exist
2677 assert((StubInfo::entry_count(stub_id) == 1) == (entries == nullptr), "trying to save wrong number of entries for stub %s", StubInfo::name(stub_id));
2678 if (entries != nullptr) {
2679 assert(entries->length() == StubInfo::entry_count(stub_id) - 1, "incorrect entry count %d when saving entries for stub %s!", entries->length(), StubInfo::name(stub_id));
2680 for (int i = 0; i < entries->length(); i++) {
2681 address entry = entries->at(i);
2682 assert(entry == nullptr || (start < entry && entry < end), "entry address %p not in range (%p, %p) for stub %s", entry, start, end, StubInfo::name(stub_id));
2683 _address_array.append(entry);
2684 }
2685 }
2686 // caller may wish to save extra addresses
2687 if (extras != nullptr) {
2688 for (int i = 0; i < extras->length(); i++) {
2689 address extra = extras->at(i);
2690 // handler range end may be end -- it gets restored as nullptr
2691 assert(extra == nullptr || (start <= extra && extra <= end), "extra address %p not in range (%p, %p) for stub %s", extra, start, end, StubInfo::name(stub_id));
2692 _address_array.append(extra);
2693 }
2694 }
2695 range.init_entry(base, _address_array.length() - base);
2696 }