infernap12/jdk
1
0
Fork 0
mirror of https://github.com/openjdk/jdk.git synced 2026-04-30 00:41:35 +00:00
Code Issues Packages Projects Releases Wiki Activity
jdk/src/hotspot/share/code/aotCodeCache.cpp
Andrew Dinn 34686923aa 8372617: Save and restore stubgen stubs when using an AOT code cache 
Reviewed-by: kvn, asmehra
2026-04-08 15:44:39 +00:00

2657 lines
100 KiB
C++
Raw Blame History

/*
* Copyright (c) 2023, 2026, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*
*/
#include "asm/macroAssembler.hpp"
#include "cds/aotCacheAccess.hpp"
#include "cds/aotMetaspace.hpp"
#include "cds/cds_globals.hpp"
#include "cds/cdsConfig.hpp"
#include "cds/heapShared.hpp"
#include "ci/ciUtilities.hpp"
#include "classfile/javaAssertions.hpp"
#include "code/aotCodeCache.hpp"
#include "code/codeCache.hpp"
#include "gc/shared/barrierSetAssembler.hpp"
#include "gc/shared/barrierSetNMethod.hpp"
#include "gc/shared/cardTableBarrierSet.hpp"
#include "gc/shared/gcConfig.hpp"
#include "logging/logStream.hpp"
#include "memory/memoryReserver.hpp"
#include "prims/jvmtiThreadState.hpp"
#include "prims/upcallLinker.hpp"
#include "runtime/deoptimization.hpp"
#include "runtime/flags/flagSetting.hpp"
#include "runtime/globals_extension.hpp"
#include "runtime/icache.hpp"
#include "runtime/java.hpp"
#include "runtime/mutexLocker.hpp"
#include "runtime/os.inline.hpp"
#include "runtime/sharedRuntime.hpp"
#include "runtime/stubInfo.hpp"
#include "runtime/stubRoutines.hpp"
#include "utilities/copy.hpp"
#ifdef COMPILER1
#include "c1/c1_Runtime1.hpp"
#endif
#ifdef COMPILER2
#include "opto/runtime.hpp"
#endif
#if INCLUDE_G1GC
#include "gc/g1/g1BarrierSetRuntime.hpp"
#include "gc/g1/g1HeapRegion.hpp"
#endif
#if INCLUDE_SHENANDOAHGC
#include "gc/shenandoah/shenandoahRuntime.hpp"
#endif
#if INCLUDE_ZGC
#include "gc/z/zBarrierSetRuntime.hpp"
#endif
#include <errno.h>
#include <sys/stat.h>
const char* aot_code_entry_kind_name[] = {
#define DECL_KIND_STRING(kind) XSTR(kind),
DO_AOTCODEENTRY_KIND(DECL_KIND_STRING)
#undef DECL_KIND_STRING
};
// Stream to printing AOTCodeCache loading failure.
// Print to error channel when -XX:AOTMode is set to "on"
static LogStream& load_failure_log() {
static LogStream err_stream(LogLevel::Error, LogTagSetMapping<LOG_TAGS(aot, codecache, init)>::tagset());
static LogStream dbg_stream(LogLevel::Debug, LogTagSetMapping<LOG_TAGS(aot, codecache, init)>::tagset());
if (RequireSharedSpaces) {
return err_stream;
} else {
return dbg_stream;
}
}
static void report_load_failure() {
if (AbortVMOnAOTCodeFailure) {
vm_exit_during_initialization("Unable to use AOT Code Cache.", nullptr);
}
load_failure_log().print_cr("Unable to use AOT Code Cache.");
AOTCodeCache::disable_caching();
}
static void report_store_failure() {
if (AbortVMOnAOTCodeFailure) {
tty->print_cr("Unable to create AOT Code Cache.");
vm_abort(false);
}
log_error(aot, codecache, exit)("Unable to create AOT Code Cache.");
AOTCodeCache::disable_caching();
}
// The sequence of AOT code caching flags and parametters settings.
//
// 1. The initial AOT code caching flags setting is done
// during call to CDSConfig::check_vm_args_consistency().
//
// 2. The earliest AOT code state check done in compilationPolicy_init()
// where we set number of compiler threads for AOT assembly phase.
//
// 3. We determine presence of AOT code in AOT Cache in
// AOTMetaspace::open_static_archive() which is calles
// after compilationPolicy_init() but before codeCache_init().
//
// 4. AOTCodeCache::initialize() is called during universe_init()
// and does final AOT state and flags settings.
//
// 5. Finally AOTCodeCache::init2() is called after universe_init()
// when all GC settings are finalized.
// Next methods determine which action we do with AOT code depending
// on phase of AOT process: assembly or production.
bool AOTCodeCache::is_dumping_adapter() {
return AOTAdapterCaching && is_on_for_dump();
}
bool AOTCodeCache::is_using_adapter() {
return AOTAdapterCaching && is_on_for_use();
}
bool AOTCodeCache::is_dumping_stub() {
return AOTStubCaching && is_on_for_dump();
}
bool AOTCodeCache::is_using_stub() {
return AOTStubCaching && is_on_for_use();
}
// Next methods could be called regardless AOT code cache status.
// Initially they are called during flags parsing and finilized
// in AOTCodeCache::initialize().
void AOTCodeCache::enable_caching() {
FLAG_SET_ERGO_IF_DEFAULT(AOTStubCaching, true);
FLAG_SET_ERGO_IF_DEFAULT(AOTAdapterCaching, true);
}
void AOTCodeCache::disable_caching() {
FLAG_SET_ERGO(AOTStubCaching, false);
FLAG_SET_ERGO(AOTAdapterCaching, false);
}
bool AOTCodeCache::is_caching_enabled() {
return AOTStubCaching || AOTAdapterCaching;
}
static uint32_t encode_id(AOTCodeEntry::Kind kind, int id) {
assert(AOTCodeEntry::is_valid_entry_kind(kind), "invalid AOTCodeEntry kind %d", (int)kind);
// There can be a conflict of id between an Adapter and *Blob, but that should not cause any functional issue
// becasue both id and kind are used to find an entry, and that combination should be unique
if (kind == AOTCodeEntry::Adapter) {
return id;
} else if (kind == AOTCodeEntry::SharedBlob) {
assert(StubInfo::is_shared(static_cast<BlobId>(id)), "not a shared blob id %d", id);
return id;
} else if (kind == AOTCodeEntry::C1Blob) {
assert(StubInfo::is_c1(static_cast<BlobId>(id)), "not a c1 blob id %d", id);
return id;
} else if (kind == AOTCodeEntry::C2Blob) {
assert(StubInfo::is_c2(static_cast<BlobId>(id)), "not a c2 blob id %d", id);
return id;
} else {
// kind must be AOTCodeEntry::StubGenBlob
assert(StubInfo::is_stubgen(static_cast<BlobId>(id)), "not a stubgen blob id %d", id);
return id;
}
}
static uint _max_aot_code_size = 0;
uint AOTCodeCache::max_aot_code_size() {
return _max_aot_code_size;
}
// It is called from AOTMetaspace::initialize_shared_spaces()
// which is called from universe_init().
// At this point all AOT class linking seetings are finilized
// and AOT cache is open so we can map AOT code region.
void AOTCodeCache::initialize() {
#if defined(ZERO) || !(defined(AMD64) || defined(AARCH64))
log_info(aot, codecache, init)("AOT Code Cache is not supported on this platform.");
disable_caching();
return;
#else
if (FLAG_IS_DEFAULT(AOTCache)) {
log_info(aot, codecache, init)("AOT Code Cache is not used: AOTCache is not specified.");
disable_caching();
return; // AOTCache must be specified to dump and use AOT code
}
if (VerifyOops) {
// Disable AOT stubs caching when VerifyOops flag is on.
// Verify oops code generated a lot of C strings which overflow
// AOT C string table (which has fixed size).
// AOT C string table will be reworked later to handle such cases.
//
// Note: AOT adapters are not affected - they don't have oop operations.
log_info(aot, codecache, init)("AOT Stubs Caching is not supported with VerifyOops.");
FLAG_SET_ERGO(AOTStubCaching, false);
}
bool is_dumping = false;
bool is_using = false;
if (CDSConfig::is_dumping_final_static_archive() && CDSConfig::is_dumping_aot_linked_classes()) {
is_dumping = true;
enable_caching();
is_dumping = is_caching_enabled();
} else if (CDSConfig::is_using_archive() && CDSConfig::is_using_aot_linked_classes()) {
enable_caching();
is_using = is_caching_enabled();
} else {
log_info(aot, codecache, init)("AOT Code Cache is not used: AOT Class Linking is not used.");
disable_caching();
return; // nothing to do
}
if (!(is_dumping || is_using)) {
disable_caching();
return; // AOT code caching disabled on command line
}
_max_aot_code_size = AOTCodeMaxSize;
if (!FLAG_IS_DEFAULT(AOTCodeMaxSize)) {
if (!is_aligned(AOTCodeMaxSize, os::vm_allocation_granularity())) {
_max_aot_code_size = align_up(AOTCodeMaxSize, os::vm_allocation_granularity());
log_debug(aot,codecache,init)("Max AOT Code Cache size is aligned up to %uK", (int)(max_aot_code_size()/K));
}
}
size_t aot_code_size = is_using ? AOTCacheAccess::get_aot_code_region_size() : 0;
if (is_using && aot_code_size == 0) {
log_info(aot, codecache, init)("AOT Code Cache is empty");
disable_caching();
return;
}
if (!open_cache(is_dumping, is_using)) {
if (is_using) {
report_load_failure();
} else {
report_store_failure();
}
return;
}
if (is_dumping) {
FLAG_SET_DEFAULT(ForceUnreachable, true);
}
FLAG_SET_DEFAULT(DelayCompilerStubsGeneration, false);
#endif // defined(AMD64) || defined(AARCH64)
}
static AOTCodeCache* opened_cache = nullptr; // Use this until we verify the cache
AOTCodeCache* AOTCodeCache::_cache = nullptr;
DEBUG_ONLY( bool AOTCodeCache::_passed_init2 = false; )
// It is called after universe_init() when all GC settings are finalized.
void AOTCodeCache::init2() {
DEBUG_ONLY( _passed_init2 = true; )
if (opened_cache == nullptr) {
return;
}
if (!opened_cache->verify_config()) {
delete opened_cache;
opened_cache = nullptr;
report_load_failure();
return;
}
// initialize aot runtime constants as appropriate to this runtime
AOTRuntimeConstants::initialize_from_runtime();
// initialize the table of external routines so we can save
// generated code blobs that reference them
AOTCodeAddressTable* table = opened_cache->_table;
assert(table != nullptr, "should be initialized already");
table->init_extrs();
// Now cache and address table are ready for AOT code generation
_cache = opened_cache;
}
bool AOTCodeCache::open_cache(bool is_dumping, bool is_using) {
opened_cache = new AOTCodeCache(is_dumping, is_using);
if (opened_cache->failed()) {
delete opened_cache;
opened_cache = nullptr;
return false;
}
return true;
}
// Called after continuations_init() when continuation stub callouts
// have been initialized
void AOTCodeCache::init3() {
if (opened_cache == nullptr) {
return;
}
// initialize external routines for continuations so we can save
// generated continuation blob that references them
AOTCodeAddressTable* table = opened_cache->_table;
assert(table != nullptr, "should be initialized already");
table->init_extrs2();
}
void AOTCodeCache::dump() {
if (is_on()) {
assert(is_on_for_dump(), "should be called only when dumping AOT code");
MutexLocker ml(Compile_lock);
_cache->finish_write();
}
}
#define DATA_ALIGNMENT HeapWordSize
AOTCodeCache::AOTCodeCache(bool is_dumping, bool is_using) :
_load_header(nullptr),
_load_buffer(nullptr),
_store_buffer(nullptr),
_C_store_buffer(nullptr),
_write_position(0),
_load_size(0),
_store_size(0),
_for_use(is_using),
_for_dump(is_dumping),
_failed(false),
_lookup_failed(false),
_table(nullptr),
_load_entries(nullptr),
_search_entries(nullptr),
_store_entries(nullptr),
_C_strings_buf(nullptr),
_store_entries_cnt(0)
{
// Read header at the begining of cache
if (_for_use) {
// Read cache
size_t load_size = AOTCacheAccess::get_aot_code_region_size();
ReservedSpace rs = MemoryReserver::reserve(load_size, mtCode);
if (!rs.is_reserved()) {
log_warning(aot, codecache, init)("Failed to reserved %u bytes of memory for mapping AOT code region into AOT Code Cache", (uint)load_size);
set_failed();
return;
}
if (!AOTCacheAccess::map_aot_code_region(rs)) {
log_warning(aot, codecache, init)("Failed to read/mmap cached code region into AOT Code Cache");
set_failed();
return;
}
_load_size = (uint)load_size;
_load_buffer = (char*)rs.base();
assert(is_aligned(_load_buffer, DATA_ALIGNMENT), "load_buffer is not aligned");
log_debug(aot, codecache, init)("Mapped %u bytes at address " INTPTR_FORMAT " at AOT Code Cache", _load_size, p2i(_load_buffer));
_load_header = (Header*)addr(0);
if (!_load_header->verify(_load_size)) {
set_failed();
return;
}
log_info (aot, codecache, init)("Loaded %u AOT code entries from AOT Code Cache", _load_header->entries_count());
log_debug(aot, codecache, init)(" Adapters: total=%u", _load_header->adapters_count());
log_debug(aot, codecache, init)(" Shared Blobs: total=%u", _load_header->shared_blobs_count());
log_debug(aot, codecache, init)(" StubGen Blobs: total=%d", _load_header->stubgen_blobs_count());
log_debug(aot, codecache, init)(" C1 Blobs: total=%u", _load_header->C1_blobs_count());
log_debug(aot, codecache, init)(" C2 Blobs: total=%u", _load_header->C2_blobs_count());
log_debug(aot, codecache, init)(" AOT code cache size: %u bytes", _load_header->cache_size());
// Read strings
load_strings();
}
if (_for_dump) {
_C_store_buffer = NEW_C_HEAP_ARRAY(char, max_aot_code_size() + DATA_ALIGNMENT, mtCode);
_store_buffer = align_up(_C_store_buffer, DATA_ALIGNMENT);
// Entries allocated at the end of buffer in reverse (as on stack).
_store_entries = (AOTCodeEntry*)align_up(_C_store_buffer + max_aot_code_size(), DATA_ALIGNMENT);
log_debug(aot, codecache, init)("Allocated store buffer at address " INTPTR_FORMAT " of size %u", p2i(_store_buffer), max_aot_code_size());
}
_table = new AOTCodeAddressTable();
}
void AOTCodeCache::add_stub_entries(StubId stub_id, address start, GrowableArray<address> *entries, int begin_idx) {
EntryId entry_id = StubInfo::entry_base(stub_id);
add_stub_entry(entry_id, start);
// skip past first entry
entry_id = StubInfo::next_in_stub(stub_id, entry_id);
// now check for any more entries
int count = StubInfo::entry_count(stub_id) - 1;
assert(start != nullptr, "invalid start address for stub %s", StubInfo::name(stub_id));
assert(entries == nullptr || begin_idx + count <= entries->length(), "sanity");
// write any extra entries
for (int i = 0; i < count; i++) {
assert(entry_id != EntryId::NO_ENTRYID, "not enough entries for stub %s", StubInfo::name(stub_id));
address a = entries->at(begin_idx + i);
add_stub_entry(entry_id, a);
entry_id = StubInfo::next_in_stub(stub_id, entry_id);
}
assert(entry_id == EntryId::NO_ENTRYID, "too many entries for stub %s", StubInfo::name(stub_id));
}
void AOTCodeCache::add_stub_entry(EntryId entry_id, address a) {
if (a != nullptr) {
if (_table != nullptr) {
log_trace(aot, codecache, stubs)("Publishing stub entry %s at address " INTPTR_FORMAT, StubInfo::name(entry_id), p2i(a));
return _table->add_stub_entry(entry_id, a);
}
}
}
void AOTCodeCache::set_shared_stubs_complete() {
AOTCodeAddressTable* table = addr_table();
if (table != nullptr) {
table->set_shared_stubs_complete();
}
}
void AOTCodeCache::set_c1_stubs_complete() {
AOTCodeAddressTable* table = addr_table();
if (table != nullptr) {
table->set_c1_stubs_complete();
}
}
void AOTCodeCache::set_c2_stubs_complete() {
AOTCodeAddressTable* table = addr_table();
if (table != nullptr) {
table->set_c2_stubs_complete();
}
}
void AOTCodeCache::set_stubgen_stubs_complete() {
AOTCodeAddressTable* table = addr_table();
if (table != nullptr) {
table->set_stubgen_stubs_complete();
}
}
void AOTCodeCache::Config::record(uint cpu_features_offset) {
#define AOTCODECACHE_SAVE_VAR(type, name) _saved_ ## name = name;
#define AOTCODECACHE_SAVE_FUN(type, name, fun) _saved_ ## name = fun;
AOTCODECACHE_CONFIGS_DO(AOTCODECACHE_SAVE_VAR, AOTCODECACHE_SAVE_FUN);
// Special configs that cannot be checked with macros
_compressedOopBase = CompressedOops::base();
#if defined(X86) && !defined(ZERO)
_useUnalignedLoadStores = UseUnalignedLoadStores;
#endif
#if defined(AARCH64) && !defined(ZERO)
_avoidUnalignedAccesses = AvoidUnalignedAccesses;
#endif
_cpu_features_offset = cpu_features_offset;
}
bool AOTCodeCache::Config::verify_cpu_features(AOTCodeCache* cache) const {
LogStreamHandle(Debug, aot, codecache, init) log;
uint offset = _cpu_features_offset;
uint cpu_features_size = *(uint *)cache->addr(offset);
assert(cpu_features_size == (uint)VM_Version::cpu_features_size(), "must be");
offset += sizeof(uint);
void* cached_cpu_features_buffer = (void *)cache->addr(offset);
if (log.is_enabled()) {
ResourceMark rm; // required for stringStream::as_string()
stringStream ss;
VM_Version::get_cpu_features_name(cached_cpu_features_buffer, ss);
log.print_cr("CPU features recorded in AOTCodeCache: %s", ss.as_string());
}
if (VM_Version::supports_features(cached_cpu_features_buffer)) {
if (log.is_enabled()) {
ResourceMark rm; // required for stringStream::as_string()
stringStream ss;
char* runtime_cpu_features = NEW_RESOURCE_ARRAY(char, VM_Version::cpu_features_size());
VM_Version::store_cpu_features(runtime_cpu_features);
VM_Version::get_missing_features_name(runtime_cpu_features, cached_cpu_features_buffer, ss);
if (!ss.is_empty()) {
log.print_cr("Additional runtime CPU features: %s", ss.as_string());
}
}
} else {
if (load_failure_log().is_enabled()) {
ResourceMark rm; // required for stringStream::as_string()
stringStream ss;
char* runtime_cpu_features = NEW_RESOURCE_ARRAY(char, VM_Version::cpu_features_size());
VM_Version::store_cpu_features(runtime_cpu_features);
VM_Version::get_missing_features_name(cached_cpu_features_buffer, runtime_cpu_features, ss);
load_failure_log().print_cr("AOT Code Cache disabled: required cpu features are missing: %s", ss.as_string());
}
return false;
}
return true;
}
#define AOTCODECACHE_DISABLED_MSG "AOT Code Cache disabled: it was created with %s = "
// Special case, print "GC = ..." to be more understandable.
inline void log_config_mismatch(CollectedHeap::Name saved, CollectedHeap::Name current, const char* name/*unused*/) {
load_failure_log().print_cr("AOT Code Cache disabled: it was created with GC = \"%s\" vs current \"%s\"",
GCConfig::hs_err_name(saved), GCConfig::hs_err_name(current));
}
inline void log_config_mismatch(bool saved, bool current, const char* name) {
load_failure_log().print_cr(AOTCODECACHE_DISABLED_MSG "%s vs current %s", name,
saved ? "true" : "false", current ? "true" : "false");
}
inline void log_config_mismatch(int saved, int current, const char* name) {
load_failure_log().print_cr(AOTCODECACHE_DISABLED_MSG "%d vs current %d", name, saved, current);
}
inline void log_config_mismatch(uint saved, uint current, const char* name) {
load_failure_log().print_cr(AOTCODECACHE_DISABLED_MSG "%u vs current %u", name, saved, current);
}
#ifdef _LP64
inline void log_config_mismatch(intx saved, intx current, const char* name) {
load_failure_log().print_cr(AOTCODECACHE_DISABLED_MSG "%zd vs current %zd", name, saved, current);
}
inline void log_config_mismatch(uintx saved, uintx current, const char* name) {
load_failure_log().print_cr(AOTCODECACHE_DISABLED_MSG "%zu vs current %zu", name, saved, current);
}
#endif
template <typename T>
bool check_config(T saved, T current, const char* name) {
if (saved != current) {
log_config_mismatch(saved, current, name);
return false;
} else {
return true;
}
}
bool AOTCodeCache::Config::verify(AOTCodeCache* cache) const {
// check CPU features before checking flags that may be
// auto-configured in response to them
if (!verify_cpu_features(cache)) {
return false;
}
// Tests for config options which might affect validity of adapters,
// stubs or nmethods. Currently we take a pessemistic stand and
// drop the whole cache if any of these are changed.
#define AOTCODECACHE_CHECK_VAR(type, name) \
if (!check_config(_saved_ ## name, name, #name)) { return false; }
#define AOTCODECACHE_CHECK_FUN(type, name, fun) \
if (!check_config(_saved_ ## name, fun, #fun)) { return false; }
AOTCODECACHE_CONFIGS_DO(AOTCODECACHE_CHECK_VAR, AOTCODECACHE_CHECK_FUN);
// Special configs that cannot be checked with macros
if ((_compressedOopBase == nullptr || CompressedOops::base() == nullptr) && (_compressedOopBase != CompressedOops::base())) {
load_failure_log().print_cr("AOT Code Cache disabled: incompatible CompressedOops::base(): %p vs current %p",
_compressedOopBase, CompressedOops::base());
return false;
}
#if defined(X86) && !defined(ZERO)
// switching off UseUnalignedLoadStores can affect validity of fill
// stubs
if (_useUnalignedLoadStores && !UseUnalignedLoadStores) {
log_config_mismatch(_useUnalignedLoadStores, UseUnalignedLoadStores, "UseUnalignedLoadStores");
return false;
}
#endif // defined(X86) && !defined(ZERO)
#if defined(AARCH64) && !defined(ZERO)
// switching on AvoidUnalignedAccesses may affect validity of array
// copy stubs and nmethods
if (!_avoidUnalignedAccesses && AvoidUnalignedAccesses) {
log_config_mismatch(_avoidUnalignedAccesses, AvoidUnalignedAccesses, "AvoidUnalignedAccesses");
return false;
}
#endif // defined(AARCH64) && !defined(ZERO)
return true;
}
bool AOTCodeCache::Header::verify(uint load_size) const {
if (_version != AOT_CODE_VERSION) {
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);
return false;
}
if (load_size < _cache_size) {
load_failure_log().print_cr("AOT Code Cache disabled: AOT Code Cache size %d < %d recorded in AOT Code header", load_size, _cache_size);
return false;
}
return true;
}
AOTCodeCache* AOTCodeCache::open_for_use() {
if (AOTCodeCache::is_on_for_use()) {
return AOTCodeCache::cache();
}
return nullptr;
}
AOTCodeCache* AOTCodeCache::open_for_dump() {
if (AOTCodeCache::is_on_for_dump()) {
AOTCodeCache* cache = AOTCodeCache::cache();
cache->clear_lookup_failed(); // Reset bit
return cache;
}
return nullptr;
}
void copy_bytes(const char* from, address to, uint size) {
assert((int)size > 0, "sanity");
memcpy(to, from, size);
log_trace(aot, codecache)("Copied %d bytes from " INTPTR_FORMAT " to " INTPTR_FORMAT, size, p2i(from), p2i(to));
}
AOTCodeReader::AOTCodeReader(AOTCodeCache* cache, AOTCodeEntry* entry) {
_cache = cache;
_entry = entry;
_load_buffer = cache->cache_buffer();
_read_position = 0;
_lookup_failed = false;
_name = nullptr;
_reloc_data = nullptr;
_reloc_count = 0;
_oop_maps = nullptr;
_entry_kind = AOTCodeEntry::None;
_stub_data = nullptr;
_id = -1;
}
void AOTCodeReader::set_read_position(uint pos) {
if (pos == _read_position) {
return;
}
assert(pos < _cache->load_size(), "offset:%d >= file size:%d", pos, _cache->load_size());
_read_position = pos;
}
bool AOTCodeCache::set_write_position(uint pos) {
if (pos == _write_position) {
return true;
}
if (_store_size < _write_position) {
_store_size = _write_position; // Adjust during write
}
assert(pos < _store_size, "offset:%d >= file size:%d", pos, _store_size);
_write_position = pos;
return true;
}
static char align_buffer[256] = { 0 };
bool AOTCodeCache::align_write() {
// We are not executing code from cache - we copy it by bytes first.
// No need for big alignment (or at all).
uint padding = DATA_ALIGNMENT - (_write_position & (DATA_ALIGNMENT - 1));
if (padding == DATA_ALIGNMENT) {
return true;
}
uint n = write_bytes((const void*)&align_buffer, padding);
if (n != padding) {
return false;
}
log_trace(aot, codecache)("Adjust write alignment in AOT Code Cache");
return true;
}
// Check to see if AOT code cache has required space to store "nbytes" of data
address AOTCodeCache::reserve_bytes(uint nbytes) {
assert(for_dump(), "Code Cache file is not created");
uint new_position = _write_position + nbytes;
if (new_position >= (uint)((char*)_store_entries - _store_buffer)) {
log_warning(aot,codecache)("Failed to ensure %d bytes at offset %d in AOT Code Cache. Increase AOTCodeMaxSize.",
nbytes, _write_position);
set_failed();
report_store_failure();
return nullptr;
}
address buffer = (address)(_store_buffer + _write_position);
log_trace(aot, codecache)("Reserved %d bytes at offset %d in AOT Code Cache", nbytes, _write_position);
_write_position += nbytes;
if (_store_size < _write_position) {
_store_size = _write_position;
}
return buffer;
}
uint AOTCodeCache::write_bytes(const void* buffer, uint nbytes) {
assert(for_dump(), "Code Cache file is not created");
if (nbytes == 0) {
return 0;
}
uint new_position = _write_position + nbytes;
if (new_position >= (uint)((char*)_store_entries - _store_buffer)) {
log_warning(aot, codecache)("Failed to write %d bytes at offset %d to AOT Code Cache. Increase AOTCodeMaxSize.",
nbytes, _write_position);
set_failed();
report_store_failure();
return 0;
}
copy_bytes((const char* )buffer, (address)(_store_buffer + _write_position), nbytes);
log_trace(aot, codecache)("Wrote %d bytes at offset %d to AOT Code Cache", nbytes, _write_position);
_write_position += nbytes;
if (_store_size < _write_position) {
_store_size = _write_position;
}
return nbytes;
}
void* AOTCodeEntry::operator new(size_t x, AOTCodeCache* cache) {
return (void*)(cache->add_entry());
}
static bool check_entry(AOTCodeEntry::Kind kind, uint id, AOTCodeEntry* entry) {
if (entry->kind() == kind) {
assert(entry->id() == id, "sanity");
return true; // Found
}
return false;
}
AOTCodeEntry* AOTCodeCache::find_entry(AOTCodeEntry::Kind kind, uint id) {
assert(_for_use, "sanity");
uint count = _load_header->entries_count();
if (_load_entries == nullptr) {
// Read it
_search_entries = (uint*)addr(_load_header->entries_offset()); // [id, index]
_load_entries = (AOTCodeEntry*)(_search_entries + 2 * count);
log_debug(aot, codecache, init)("Read %d entries table at offset %d from AOT Code Cache", count, _load_header->entries_offset());
}
// Binary search
int l = 0;
int h = count - 1;
while (l <= h) {
int mid = (l + h) >> 1;
int ix = mid * 2;
uint is = _search_entries[ix];
if (is == id) {
int index = _search_entries[ix + 1];
AOTCodeEntry* entry = &(_load_entries[index]);
if (check_entry(kind, id, entry)) {
return entry; // Found
}
// Linear search around to handle id collission
for (int i = mid - 1; i >= l; i--) { // search back
ix = i * 2;
is = _search_entries[ix];
if (is != id) {
break;
}
index = _search_entries[ix + 1];
AOTCodeEntry* entry = &(_load_entries[index]);
if (check_entry(kind, id, entry)) {
return entry; // Found
}
}
for (int i = mid + 1; i <= h; i++) { // search forward
ix = i * 2;
is = _search_entries[ix];
if (is != id) {
break;
}
index = _search_entries[ix + 1];
AOTCodeEntry* entry = &(_load_entries[index]);
if (check_entry(kind, id, entry)) {
return entry; // Found
}
}
break; // Not found match
} else if (is < id) {
l = mid + 1;
} else {
h = mid - 1;
}
}
return nullptr;
}
extern "C" {
static int uint_cmp(const void *i, const void *j) {
uint a = *(uint *)i;
uint b = *(uint *)j;
return a > b ? 1 : a < b ? -1 : 0;
}
}
void AOTCodeCache::store_cpu_features(char*& buffer, uint buffer_size) {
uint* size_ptr = (uint *)buffer;
*size_ptr = buffer_size;
buffer += sizeof(uint);
VM_Version::store_cpu_features(buffer);
log_debug(aot, codecache, exit)("CPU features recorded in AOTCodeCache: %s", VM_Version::features_string());
buffer += buffer_size;
buffer = align_up(buffer, DATA_ALIGNMENT);
}
bool AOTCodeCache::finish_write() {
if (!align_write()) {
return false;
}
uint strings_offset = _write_position;
int strings_count = store_strings();
if (strings_count < 0) {
return false;
}
if (!align_write()) {
return false;
}
uint strings_size = _write_position - strings_offset;
uint entries_count = 0; // Number of entrant (useful) code entries
uint entries_offset = _write_position;
uint store_count = _store_entries_cnt;
if (store_count > 0) {
uint header_size = (uint)align_up(sizeof(AOTCodeCache::Header), DATA_ALIGNMENT);
uint code_count = store_count;
uint search_count = code_count * 2;
uint search_size = search_count * sizeof(uint);
uint entries_size = (uint)align_up(code_count * sizeof(AOTCodeEntry), DATA_ALIGNMENT); // In bytes
// _write_position includes size of code and strings
uint code_alignment = code_count * DATA_ALIGNMENT; // We align_up code size when storing it.
uint cpu_features_size = VM_Version::cpu_features_size();
uint total_cpu_features_size = sizeof(uint) + cpu_features_size; // sizeof(uint) to store cpu_features_size
uint total_size = header_size + _write_position + code_alignment + search_size + entries_size +
align_up(total_cpu_features_size, DATA_ALIGNMENT);
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());
// Allocate in AOT Cache buffer
char* buffer = (char *)AOTCacheAccess::allocate_aot_code_region(total_size + DATA_ALIGNMENT);
char* start = align_up(buffer, DATA_ALIGNMENT);
char* current = start + header_size; // Skip header
uint cpu_features_offset = current - start;
store_cpu_features(current, cpu_features_size);
assert(is_aligned(current, DATA_ALIGNMENT), "sanity check");
assert(current < start + total_size, "sanity check");
// Create ordered search table for entries [id, index];
uint* search = NEW_C_HEAP_ARRAY(uint, search_count, mtCode);
AOTCodeEntry* entries_address = _store_entries; // Pointer to latest entry
uint adapters_count = 0;
uint shared_blobs_count = 0;
uint stubgen_blobs_count = 0;
uint C1_blobs_count = 0;
uint C2_blobs_count = 0;
uint max_size = 0;
// AOTCodeEntry entries were allocated in reverse in store buffer.
// Process them in reverse order to cache first code first.
for (int i = store_count - 1; i >= 0; i--) {
entries_address[i].set_next(nullptr); // clear pointers before storing data
uint size = align_up(entries_address[i].size(), DATA_ALIGNMENT);
if (size > max_size) {
max_size = size;
}
copy_bytes((_store_buffer + entries_address[i].offset()), (address)current, size);
entries_address[i].set_offset(current - start); // New offset
current += size;
uint n = write_bytes(&(entries_address[i]), sizeof(AOTCodeEntry));
if (n != sizeof(AOTCodeEntry)) {
FREE_C_HEAP_ARRAY(uint, search);
return false;
}
search[entries_count*2 + 0] = entries_address[i].id();
search[entries_count*2 + 1] = entries_count;
entries_count++;
AOTCodeEntry::Kind kind = entries_address[i].kind();
if (kind == AOTCodeEntry::Adapter) {
adapters_count++;
} else if (kind == AOTCodeEntry::SharedBlob) {
shared_blobs_count++;
} else if (kind == AOTCodeEntry::StubGenBlob) {
stubgen_blobs_count++;
} else if (kind == AOTCodeEntry::C1Blob) {
C1_blobs_count++;
} else if (kind == AOTCodeEntry::C2Blob) {
C2_blobs_count++;
}
}
if (entries_count == 0) {
log_info(aot, codecache, exit)("AOT Code Cache was not created: no entires");
FREE_C_HEAP_ARRAY(uint, search);
return true; // Nothing to write
}
assert(entries_count <= store_count, "%d > %d", entries_count, store_count);
// Write strings
if (strings_count > 0) {
copy_bytes((_store_buffer + strings_offset), (address)current, strings_size);
strings_offset = (current - start); // New offset
current += strings_size;
}
uint new_entries_offset = (current - start); // New offset
// Sort and store search table
qsort(search, entries_count, 2*sizeof(uint), uint_cmp);
search_size = 2 * entries_count * sizeof(uint);
copy_bytes((const char*)search, (address)current, search_size);
FREE_C_HEAP_ARRAY(uint, search);
current += search_size;
// Write entries
entries_size = entries_count * sizeof(AOTCodeEntry); // New size
copy_bytes((_store_buffer + entries_offset), (address)current, entries_size);
current += entries_size;
uint size = (current - start);
assert(size <= total_size, "%d > %d", size , total_size);
log_debug(aot, codecache, exit)(" Adapters: total=%u", adapters_count);
log_debug(aot, codecache, exit)(" Shared Blobs: total=%d", shared_blobs_count);
log_debug(aot, codecache, exit)(" StubGen Blobs: total=%d", stubgen_blobs_count);
log_debug(aot, codecache, exit)(" C1 Blobs: total=%d", C1_blobs_count);
log_debug(aot, codecache, exit)(" C2 Blobs: total=%d", C2_blobs_count);
log_debug(aot, codecache, exit)(" AOT code cache size: %u bytes, max entry's size: %u bytes", size, max_size);
// Finalize header
AOTCodeCache::Header* header = (AOTCodeCache::Header*)start;
header->init(size, (uint)strings_count, strings_offset,
entries_count, new_entries_offset,
adapters_count, shared_blobs_count,
stubgen_blobs_count, C1_blobs_count,
C2_blobs_count, cpu_features_offset);
log_info(aot, codecache, exit)("Wrote %d AOT code entries to AOT Code Cache", entries_count);
}
return true;
}
//------------------Store/Load AOT code ----------------------
bool AOTCodeCache::store_code_blob(CodeBlob& blob, AOTCodeEntry::Kind entry_kind, uint id, const char* name, AOTStubData* stub_data, CodeBuffer* code_buffer) {
assert(AOTCodeEntry::is_valid_entry_kind(entry_kind), "invalid entry_kind %d", entry_kind);
// we only expect stub data and a code buffer for a multi stub blob
assert(AOTCodeEntry::is_multi_stub_blob(entry_kind) == (stub_data != nullptr),
"entry_kind %d does not match stub_data pointer %p",
entry_kind, stub_data);
assert((stub_data == nullptr) == (code_buffer == nullptr),
"stub data and code buffer must both be null or both non null");
// If this is a stub and the cache is on for either load or dump we
// need to insert the stub entries into the AOTCacheAddressTable so
// that relocs which refer to entries defined by this blob get
// translated correctly.
//
// Entry insertion needs to be be done up front before writing the
// blob because some blobs rely on internal daisy-chain references
// from one entry to another.
//
// Entry insertion also needs to be done even if the cache is open
// for use but not for dump. This may be needed when an archived
// blob omits some entries -- either because of a config change or a
// load failure -- with the result that the entries end up being
// generated. These generated entry addresses may be needed to
// resolve references from subsequently loaded blobs (for either
// stubs or nmethods).
if (is_on() && AOTCodeEntry::is_blob(entry_kind)) {
publish_stub_addresses(blob, (BlobId)id, stub_data);
}
AOTCodeCache* cache = open_for_dump();
if (cache == nullptr) {
return false;
}
if (AOTCodeEntry::is_adapter(entry_kind) && !is_dumping_adapter()) {
return false;
}
if (AOTCodeEntry::is_blob(entry_kind) && !is_dumping_stub()) {
return false;
}
// we do not currently store C2 stubs because we are seeing weird
// memory errors when loading them -- see JDK-8357593
if (entry_kind == AOTCodeEntry::C2Blob) {
return false;
}
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]);
#ifdef ASSERT
LogStreamHandle(Trace, aot, codecache, stubs) log;
if (log.is_enabled()) {
FlagSetting fs(PrintRelocations, true);
blob.print_on(&log);
}
#endif
// we need to take a lock to prevent race between compiler threads generating AOT code
// and the main thread generating adapter
MutexLocker ml(Compile_lock);
if (!is_on()) {
return false; // AOT code cache was already dumped and closed.
}
if (!cache->align_write()) {
return false;
}
uint entry_position = cache->_write_position;
// Write name
uint name_offset = cache->_write_position - entry_position;
uint name_size = (uint)strlen(name) + 1; // Includes '/0'
uint n = cache->write_bytes(name, name_size);
if (n != name_size) {
return false;
}
// Write CodeBlob
if (!cache->align_write()) {
return false;
}
uint blob_offset = cache->_write_position - entry_position;
address archive_buffer = cache->reserve_bytes(blob.size());
if (archive_buffer == nullptr) {
return false;
}
CodeBlob::archive_blob(&blob, archive_buffer);
// For a relocatable code blob its relocations are linked from the
// blob. However, for a non-relocatable (stubgen) blob we only have
// transient relocations attached to the code buffer that are added
// in order to support AOT-load time patching. in either case, we
// need to explicitly save these relocs when storing the blob to the
// archive so we can then reload them and reattach them to either
// the blob or to a code buffer when we reload the blob into a
// production JVM.
//
// Either way we are then in a position to iterate over the relocs
// and AOT patch the ones that refer to code that may move between
// assembly and production time. We also need to save and restore
// AOT address table indexes for the target addresses of affected
// relocs. That happens below.
int reloc_count;
address reloc_data;
if (AOTCodeEntry::is_multi_stub_blob(entry_kind)) {
CodeSection* cs = code_buffer->code_section(CodeBuffer::SECT_INSTS);
reloc_count = (cs->has_locs() ? cs->locs_count() : 0);
reloc_data = (reloc_count > 0 ? (address)cs->locs_start() : nullptr);
} else {
reloc_count = blob.relocation_size() / sizeof(relocInfo);
reloc_data = (address)blob.relocation_begin();
}
n = cache->write_bytes(&reloc_count, sizeof(int));
if (n != sizeof(int)) {
return false;
}
if (AOTCodeEntry::is_multi_stub_blob(entry_kind)) {
// align to heap word size before writing the relocs so we can
// install them into a code buffer when they get restored
if (!cache->align_write()) {
return false;
}
}
uint reloc_data_size = (uint)(reloc_count * sizeof(relocInfo));
n = cache->write_bytes(reloc_data, reloc_data_size);
if (n != reloc_data_size) {
return false;
}
bool has_oop_maps = false;
if (blob.oop_maps() != nullptr) {
if (!cache->write_oop_map_set(blob)) {
return false;
}
has_oop_maps = true;
}
// In the case of a multi-stub blob we need to write start, end,
// secondary entries and extras. For any other blob entry addresses
// beyond the blob start will be stored in the blob as offsets.
if (stub_data != nullptr) {
if (!cache->write_stub_data(blob, stub_data)) {
return false;
}
}
// now we have added all the other data we can write details of any
// extra the AOT relocations
bool write_ok;
if (AOTCodeEntry::is_multi_stub_blob(entry_kind)) {
CodeSection* cs = code_buffer->code_section(CodeBuffer::SECT_INSTS);
RelocIterator iter(cs);
write_ok = cache->write_relocations(blob, iter);
} else {
RelocIterator iter(&blob);
write_ok = cache->write_relocations(blob, iter);
}
if (!write_ok) {
if (!cache->failed()) {
// We may miss an address in AOT table - skip this code blob.
cache->set_write_position(entry_position);
}
return false;
}
#ifndef PRODUCT
// Write asm remarks after relocation info
if (!cache->write_asm_remarks(blob)) {
return false;
}
if (!cache->write_dbg_strings(blob)) {
return false;
}
#endif /* PRODUCT */
uint entry_size = cache->_write_position - entry_position;
AOTCodeEntry* entry = new(cache) AOTCodeEntry(entry_kind, encode_id(entry_kind, id),
entry_position, entry_size, name_offset, name_size,
blob_offset, has_oop_maps, blob.content_begin());
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]);
return true;
}
bool AOTCodeCache::store_code_blob(CodeBlob& blob, AOTCodeEntry::Kind entry_kind, uint id, const char* name) {
assert(!AOTCodeEntry::is_blob(entry_kind),
"wrong entry kind for numeric id %d", id);
return store_code_blob(blob, entry_kind, (uint)id, name, nullptr, nullptr);
}
bool AOTCodeCache::store_code_blob(CodeBlob& blob, AOTCodeEntry::Kind entry_kind, BlobId id) {
assert(AOTCodeEntry::is_single_stub_blob(entry_kind),
"wrong entry kind for blob id %s", StubInfo::name(id));
return store_code_blob(blob, entry_kind, (uint)id, StubInfo::name(id), nullptr, nullptr);
}
bool AOTCodeCache::store_code_blob(CodeBlob& blob, AOTCodeEntry::Kind entry_kind, BlobId id, AOTStubData* stub_data, CodeBuffer* code_buffer) {
assert(AOTCodeEntry::is_multi_stub_blob(entry_kind),
"wrong entry kind for multi stub blob id %s", StubInfo::name(id));
return store_code_blob(blob, entry_kind, (uint)id, StubInfo::name(id), stub_data, code_buffer);
}
bool AOTCodeCache::write_stub_data(CodeBlob &blob, AOTStubData *stub_data) {
BlobId blob_id = stub_data->blob_id();
StubId stub_id = StubInfo::stub_base(blob_id);
address blob_base = blob.code_begin();
int stub_cnt = StubInfo::stub_count(blob_id);
int n;
LogStreamHandle(Trace, aot, codecache, stubs) log;
if (log.is_enabled()) {
log.print_cr("======== Stub data starts at offset %d", _write_position);
}
for (int i = 0; i < stub_cnt; i++, stub_id = StubInfo::next_in_blob(blob_id, stub_id)) {
// for each stub we find in the ranges list we write an int
// sequence <stubid,start,end,N,offset1, ... offsetN> where
//
// - start_pos is the stub start address encoded as a code section offset
//
// - end is the stub end address encoded as an offset from start
//
// - N counts the number of stub-local entries/extras
//
// - offseti is a stub-local entry/extra address encoded as len for
// a null address otherwise as an offset in range [1,len-1]
StubAddrRange& range = stub_data->get_range(i);
GrowableArray<address>& addresses = stub_data->address_array();
int base = range.start_index();
if (base >= 0) {
n = write_bytes(&stub_id, sizeof(StubId));
if (n != sizeof(StubId)) {
return false;
}
address start = addresses.at(base);
assert (blob_base <= start, "sanity");
uint offset = (uint)(start - blob_base);
n = write_bytes(&offset, sizeof(uint));
if (n != sizeof(int)) {
return false;
}
address end = addresses.at(base + 1);
assert (start < end, "sanity");
offset = (uint)(end - start);
n = write_bytes(&offset, sizeof(uint));
if (n != sizeof(int)) {
return false;
}
// write number of secondary and extra entries
int count = range.count() - 2;
n = write_bytes(&count, sizeof(int));
if (n != sizeof(int)) {
return false;
}
for (int j = 0; j < count; j++) {
address next = addresses.at(base + 2 + j);
if (next != nullptr) {
// n.b. This maps next == end to the stub length which
// means we will reconstitute the address as nullptr. That
// happens when we have a handler range covers the end of
// a stub and needs to be handled specially by the client
// that restores the extras.
assert(start <= next && next <= end, "sanity");
offset = (uint)(next - start);
} else {
// this can happen when a stub is not generated or an
// extra is the common handler target
offset = NULL_ADDRESS_MARKER;
}
n = write_bytes(&offset, sizeof(uint));
if (n != sizeof(int)) {
return false;
}
}
if (log.is_enabled()) {
log.print_cr("======== wrote stub %s and %d addresses up to offset %d",
StubInfo::name(stub_id), range.count(), _write_position);
}
}
}
// we should have exhausted all stub ids in the blob
assert(stub_id == StubId::NO_STUBID, "sanity");
// write NO_STUBID as an end marker
n = write_bytes(&stub_id, sizeof(StubId));
if (n != sizeof(StubId)) {
return false;
}
if (log.is_enabled()) {
log.print_cr("======== Stub data ends at offset %d", _write_position);
}
return true;
}
CodeBlob* AOTCodeCache::load_code_blob(AOTCodeEntry::Kind entry_kind, uint id, const char* name, AOTStubData* stub_data) {
AOTCodeCache* cache = open_for_use();
if (cache == nullptr) {
return nullptr;
}
assert(AOTCodeEntry::is_valid_entry_kind(entry_kind), "invalid entry_kind %d", entry_kind);
assert(AOTCodeEntry::is_multi_stub_blob(entry_kind) == (stub_data != nullptr),
"entry_kind %d does not match stub_data pointer %p",
entry_kind, stub_data);
if (AOTCodeEntry::is_adapter(entry_kind) && !is_using_adapter()) {
return nullptr;
}
if (AOTCodeEntry::is_blob(entry_kind) && !is_using_stub()) {
return nullptr;
}
// we do not currently load C2 stubs because we are seeing weird
// memory errors when loading them -- see JDK-8357593
if (entry_kind == AOTCodeEntry::C2Blob) {
return nullptr;
}
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]);
AOTCodeEntry* entry = cache->find_entry(entry_kind, encode_id(entry_kind, id));
if (entry == nullptr) {
return nullptr;
}
AOTCodeReader reader(cache, entry);
CodeBlob* blob = reader.compile_code_blob(name, entry_kind, id, stub_data);
log_debug(aot, codecache, stubs)("%sRead blob '%s' (id=%u, kind=%s) from AOT Code Cache",
(blob == nullptr? "Failed to " : ""), name, id, aot_code_entry_kind_name[entry_kind]);
return blob;
}
CodeBlob* AOTCodeCache::load_code_blob(AOTCodeEntry::Kind entry_kind, uint id, const char* name) {
assert(!AOTCodeEntry::is_blob(entry_kind),
"wrong entry kind for numeric id %d", id);
return load_code_blob(entry_kind, (uint)id, name, nullptr);
}
CodeBlob* AOTCodeCache::load_code_blob(AOTCodeEntry::Kind entry_kind, BlobId id) {
assert(AOTCodeEntry::is_single_stub_blob(entry_kind),
"wrong entry kind for blob id %s", StubInfo::name(id));
return load_code_blob(entry_kind, (uint)id, StubInfo::name(id), nullptr);
}
CodeBlob* AOTCodeCache::load_code_blob(AOTCodeEntry::Kind entry_kind, BlobId id, AOTStubData* stub_data) {
assert(AOTCodeEntry::is_multi_stub_blob(entry_kind),
"wrong entry kind for blob id %s", StubInfo::name(id));
return load_code_blob(entry_kind, (uint)id, StubInfo::name(id), stub_data);
}
CodeBlob* AOTCodeReader::compile_code_blob(const char* name, AOTCodeEntry::Kind entry_kind, int id, AOTStubData* stub_data) {
uint entry_position = _entry->offset();
// Read name
uint name_offset = entry_position + _entry->name_offset();
uint name_size = _entry->name_size(); // Includes '/0'
const char* stored_name = addr(name_offset);
if (strncmp(stored_name, name, (name_size - 1)) != 0) {
log_warning(aot, codecache, stubs)("Saved blob's name '%s' is different from the expected name '%s'",
stored_name, name);
set_lookup_failed(); // Skip this blob
return nullptr;
}
_name = stored_name;
// Read archived code blob and related info
uint offset = entry_position + _entry->blob_offset();
CodeBlob* archived_blob = (CodeBlob*)addr(offset);
offset += archived_blob->size();
_reloc_count = *(int*)addr(offset); offset += sizeof(int);
if (AOTCodeEntry::is_multi_stub_blob(entry_kind)) {
// position of relocs will have been aligned to heap word size so
// we can install them into a code buffer
offset = align_up(offset, DATA_ALIGNMENT);
}
_reloc_data = (address)addr(offset);
offset += _reloc_count * sizeof(relocInfo);
set_read_position(offset);
if (_entry->has_oop_maps()) {
_oop_maps = read_oop_map_set();
}
// record current context for use by that callback
_stub_data = stub_data;
_entry_kind = entry_kind;
_id = id;
// CodeBlob::restore() calls AOTCodeReader::restore()
CodeBlob* code_blob = CodeBlob::create(archived_blob, this);
if (code_blob == nullptr) { // no space left in CodeCache
return nullptr;
}
#ifdef ASSERT
LogStreamHandle(Trace, aot, codecache, stubs) log;
if (log.is_enabled()) {
FlagSetting fs(PrintRelocations, true);
code_blob->print_on(&log);
}
#endif
return code_blob;
}
void AOTCodeReader::restore(CodeBlob* code_blob) {
precond(AOTCodeCache::is_on_for_use());
precond(_name != nullptr);
precond(_reloc_data != nullptr);
code_blob->set_name(_name);
// Saved relocations need restoring except for the case of a
// multi-stub blob which has no runtime relocations. However, we may
// still have saved some (re-)load time relocs that were attached to
// the generator's code buffer. We don't attach them to the blob but
// they get processed below by fix_relocations.
if (!AOTCodeEntry::is_multi_stub_blob(_entry_kind)) {
code_blob->restore_mutable_data(_reloc_data);
}
code_blob->set_oop_maps(_oop_maps);
// if this is a multi stub blob load its entries
if (AOTCodeEntry::is_blob(_entry_kind)) {
BlobId blob_id = static_cast<BlobId>(_id);
if (StubInfo::is_stubgen(blob_id)) {
assert(_stub_data != nullptr, "sanity");
read_stub_data(code_blob, _stub_data);
}
// publish entries found either in stub_data or as offsets in blob
AOTCodeCache::publish_stub_addresses(*code_blob, blob_id, _stub_data);
}
// Now that all the entry points are in the address table we can
// read all the extra reloc info and fix up any addresses that need
// patching to adjust for a new location in a new JVM. We can be
// sure to correctly update all runtime references, including
// cross-linked stubs that are internally daisy-chained. If
// relocation fails and we have to re-generate any of the stubs then
// the entry points for newly generated stubs will get updated,
// ensuring that any other stubs or nmethods we need to relocate
// will use the correct address.
// if we have a relocatable code blob then the relocs are already
// attached to the blob and we can iterate over it to find the ones
// we need to patch. With a non-relocatable code blob we need to
// wrap it with a CodeBuffer and then reattach the relocs to the
// code buffer.
if (AOTCodeEntry::is_multi_stub_blob(_entry_kind)) {
// the blob doesn't have any proper runtime relocs but we can
// reinstate the AOT-load time relocs we saved from the code
// buffer that generated this blob in a new code buffer and use
// the latter to iterate over them
CodeBuffer code_buffer(code_blob);
relocInfo* locs = (relocInfo*)_reloc_data;
code_buffer.insts()->initialize_shared_locs(locs, _reloc_count);
code_buffer.insts()->set_locs_end(locs + _reloc_count);
CodeSection *cs = code_buffer.code_section(CodeBuffer::SECT_INSTS);
RelocIterator reloc_iter(cs);
fix_relocations(code_blob, reloc_iter);
} else {
// the AOT-load time relocs will be in the blob's restored relocs
RelocIterator reloc_iter(code_blob);
fix_relocations(code_blob, reloc_iter);
}
#ifndef PRODUCT
code_blob->asm_remarks().init();
read_asm_remarks(code_blob->asm_remarks());
code_blob->dbg_strings().init();
read_dbg_strings(code_blob->dbg_strings());
#endif // PRODUCT
}
void AOTCodeReader::read_stub_data(CodeBlob* code_blob, AOTStubData* stub_data) {
GrowableArray<address>& addresses = stub_data->address_array();
// Read the list of stub ids and associated start, end, secondary
// and extra addresses and install them in the stub data.
//
// Also insert all start and secondary addresses into the AOTCache
// address table so we correctly relocate this blob and any followng
// blobs/nmethods.
//
// n.b. if an error occurs and we need to regenerate any of these
// stubs the address table will be updated as a side-effect of
// regeneration.
address blob_base = code_blob->code_begin();
uint blob_size = (uint)(code_blob->code_end() - blob_base);
int offset = read_position();
LogStreamHandle(Trace, aot, codecache, stubs) log;
if (log.is_enabled()) {
log.print_cr("======== Stub data starts at offset %d", offset);
}
// read stub and entries until we see NO_STUBID
StubId stub_id = *(StubId*)addr(offset); offset += sizeof(StubId);
// we ought to have at least one saved stub in the blob
assert(stub_id != StubId::NO_STUBID, "blob %s contains no stubs!", StubInfo::name(stub_data->blob_id()));
while (stub_id != StubId::NO_STUBID) {
assert(StubInfo::blob(stub_id) == stub_data->blob_id(), "sanity");
int idx = StubInfo::stubgen_offset_in_blob(stub_data->blob_id(), stub_id);
StubAddrRange& range = stub_data->get_range(idx);
// we should only see a stub once
assert(range.start_index() < 0, "repeated entry for stub %s", StubInfo::name(stub_id));
int address_base = addresses.length();
// start is an offset from the blob base
uint start = *(uint*)addr(offset); offset += sizeof(uint);
assert(start < blob_size, "stub %s start offset %d exceeds buffer length %d", StubInfo::name(stub_id), start, blob_size);
address stub_start = blob_base + start;
addresses.append(stub_start);
// end is an offset from the stub start
uint end = *(uint*)addr(offset); offset += sizeof(uint);
assert(start + end <= blob_size, "stub %s end offset %d exceeds remaining buffer length %d", StubInfo::name(stub_id), end, blob_size - start);
addresses.append(stub_start + end);
// read count of secondary entries plus extras
int entries_count = *(int*)addr(offset); offset += sizeof(int);
assert(entries_count >= (StubInfo::entry_count(stub_id) - 1), "not enough entries for %s", StubInfo::name(stub_id));
for (int i = 0; i < entries_count; i++) {
// entry offset is an offset from the stub start less than or
// equal to end
uint entry = *(uint*)addr(offset); offset += sizeof(uint);
if (entry <= end) {
// entry addresses may not address end but extras can
assert(entry < end || i >= StubInfo::entry_count(stub_id),
"entry offset 0x%x exceeds stub length 0x%x for stub %s",
entry, end, StubInfo::name(stub_id));
addresses.append(stub_start + entry);
} else {
// special case: entry encodes a nullptr
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);
addresses.append(nullptr);
}
}
if (log.is_enabled()) {
log.print_cr("======== read stub %s and %d addresses up to offset %d",
StubInfo::name(stub_id), 2 + entries_count, offset);
}
range.init_entry(address_base, 2 + entries_count);
// move on to next stub or NO_STUBID
stub_id = *(StubId*)addr(offset); offset += sizeof(StubId);
}
if (log.is_enabled()) {
log.print_cr("======== Stub data ends at offset %d", offset);
}
set_read_position(offset);
}
void AOTCodeCache::publish_external_addresses(GrowableArray<address>& addresses) {
DEBUG_ONLY( _passed_init2 = true; )
if (opened_cache == nullptr) {
return;
}
cache()->_table->add_external_addresses(addresses);
}
void AOTCodeCache::publish_stub_addresses(CodeBlob &code_blob, BlobId blob_id, AOTStubData *stub_data) {
if (stub_data != nullptr) {
// register all entries in stub
assert(StubInfo::stub_count(blob_id) > 1,
"multiple stub data provided for single stub blob %s",
StubInfo::name(blob_id));
assert(blob_id == stub_data->blob_id(),
"blob id %s does not match id in stub data %s",
StubInfo::name(blob_id),
StubInfo::name(stub_data->blob_id()));
// iterate over all stubs in the blob
StubId stub_id = StubInfo::stub_base(blob_id);
int stub_cnt = StubInfo::stub_count(blob_id);
GrowableArray<address>& addresses = stub_data->address_array();
for (int i = 0; i < stub_cnt; i++) {
assert(stub_id != StubId::NO_STUBID, "sanity");
StubAddrRange& range = stub_data->get_range(i);
int base = range.start_index();
if (base >= 0) {
cache()->add_stub_entries(stub_id, addresses.at(base), &addresses, base + 2);
}
stub_id = StubInfo::next_in_blob(blob_id, stub_id);
}
// we should have exhausted all stub ids in the blob
assert(stub_id == StubId::NO_STUBID, "sanity");
} else {
// register entry or entries for a single stub blob
StubId stub_id = StubInfo::stub_base(blob_id);
assert(StubInfo::stub_count(blob_id) == 1,
"multiple stub blob %s provided without stub data",
StubInfo::name(blob_id));
address start = code_blob.code_begin();
if (StubInfo::entry_count(stub_id) == 1) {
assert(!code_blob.is_deoptimization_stub(), "expecting multiple entries for stub %s", StubInfo::name(stub_id));
// register the blob base address as the only entry
cache()->add_stub_entries(stub_id, start);
} else {
assert(code_blob.is_deoptimization_stub(), "only expecting one entry for stub %s", StubInfo::name(stub_id));
DeoptimizationBlob *deopt_blob = code_blob.as_deoptimization_blob();
assert(deopt_blob->unpack() == start, "unexpected offset 0x%x for deopt stub entry", (int)(deopt_blob->unpack() - start));
GrowableArray<address> addresses;
addresses.append(deopt_blob->unpack_with_exception());
addresses.append(deopt_blob->unpack_with_reexecution());
addresses.append(deopt_blob->unpack_with_exception_in_tls());
#if INCLUDE_JVMCI
addresses.append(deopt_blob->uncommon_trap());
addresses.append(deopt_blob->implicit_exception_uncommon_trap());
#endif // INCLUDE_JVMCI
cache()->add_stub_entries(stub_id, start, &addresses, 0);
}
}
}
// ------------ process code and data --------------
// Can't use -1. It is valid value for jump to iteself destination
// used by static call stub: see NativeJump::jump_destination().
#define BAD_ADDRESS_ID -2
bool AOTCodeCache::write_relocations(CodeBlob& code_blob, RelocIterator& iter) {
GrowableArray<uint> reloc_data;
LogStreamHandle(Trace, aot, codecache, reloc) log;
while (iter.next()) {
int idx = reloc_data.append(0); // default value
switch (iter.type()) {
case relocInfo::none:
break;
case relocInfo::runtime_call_type: {
// Record offset of runtime destination
CallRelocation* r = (CallRelocation*)iter.reloc();
address dest = r->destination();
if (dest == r->addr()) { // possible call via trampoline on Aarch64
dest = (address)-1; // do nothing in this case when loading this relocation
}
int id = _table->id_for_address(dest, iter, &code_blob);
if (id == BAD_ADDRESS_ID) {
return false;
}
reloc_data.at_put(idx, id);
break;
}
case relocInfo::runtime_call_w_cp_type:
log_debug(aot, codecache, reloc)("runtime_call_w_cp_type relocation is not implemented");
return false;
case relocInfo::external_word_type: {
// Record offset of runtime target
address target = ((external_word_Relocation*)iter.reloc())->target();
int id = _table->id_for_address(target, iter, &code_blob);
if (id == BAD_ADDRESS_ID) {
return false;
}
reloc_data.at_put(idx, id);
break;
}
case relocInfo::internal_word_type:
break;
case relocInfo::section_word_type:
break;
case relocInfo::post_call_nop_type:
break;
default:
log_debug(aot, codecache, reloc)("relocation %d unimplemented", (int)iter.type());
return false;
break;
}
if (log.is_enabled()) {
iter.print_current_on(&log);
}
}
// Write additional relocation data: uint per relocation
// Write the count first
int count = reloc_data.length();
write_bytes(&count, sizeof(int));
if (log.is_enabled()) {
log.print_cr("======== extra relocations count=%d", count);
log.print( " {");
}
bool first = true;
for (GrowableArrayIterator<uint> iter = reloc_data.begin();
iter != reloc_data.end(); ++iter) {
uint value = *iter;
int n = write_bytes(&value, sizeof(uint));
if (n != sizeof(uint)) {
return false;
}
if (log.is_enabled()) {
if (first) {
first = false;
log.print("%d", value);
} else {
log.print(", %d", value);
}
}
}
if (log.is_enabled()) {
log.print_cr("}");
}
return true;
}
void AOTCodeReader::fix_relocations(CodeBlob *code_blob, RelocIterator& iter) {
uint offset = read_position();
int reloc_count = *(int*)addr(offset);
offset += sizeof(int);
uint* reloc_data = (uint*)addr(offset);
offset += (reloc_count * sizeof(uint));
set_read_position(offset);
LogStreamHandle(Trace, aot, codecache, reloc) log;
if (log.is_enabled()) {
log.print_cr("======== extra relocations count=%d", reloc_count);
log.print(" {");
for(int i = 0; i < reloc_count; i++) {
if (i == 0) {
log.print("%d", reloc_data[i]);
} else {
log.print(", %d", reloc_data[i]);
}
}
log.print_cr("}");
}
int j = 0;
while (iter.next()) {
switch (iter.type()) {
case relocInfo::none:
break;
case relocInfo::runtime_call_type: {
address dest = _cache->address_for_id(reloc_data[j]);
if (dest != (address)-1) {
((CallRelocation*)iter.reloc())->set_destination(dest);
}
break;
}
case relocInfo::runtime_call_w_cp_type:
// this relocation should not be in cache (see write_relocations)
assert(false, "runtime_call_w_cp_type relocation is not implemented");
break;
case relocInfo::external_word_type: {
address target = _cache->address_for_id(reloc_data[j]);
// Add external address to global table
int index = ExternalsRecorder::find_index(target);
// Update index in relocation
Relocation::add_jint(iter.data(), index);
external_word_Relocation* reloc = (external_word_Relocation*)iter.reloc();
assert(reloc->target() == target, "sanity");
reloc->set_value(target); // Patch address in the code
break;
}
case relocInfo::internal_word_type: {
internal_word_Relocation* r = (internal_word_Relocation*)iter.reloc();
r->fix_relocation_after_aot_load(aot_code_entry()->dumptime_content_start_addr(), code_blob->content_begin());
break;
}
case relocInfo::section_word_type: {
section_word_Relocation* r = (section_word_Relocation*)iter.reloc();
r->fix_relocation_after_aot_load(aot_code_entry()->dumptime_content_start_addr(), code_blob->content_begin());
break;
}
case relocInfo::post_call_nop_type:
break;
default:
assert(false,"relocation %d unimplemented", (int)iter.type());
break;
}
if (log.is_enabled()) {
iter.print_current_on(&log);
}
j++;
}
assert(j == reloc_count, "sanity");
}
bool AOTCodeCache::write_oop_map_set(CodeBlob& cb) {
ImmutableOopMapSet* oopmaps = cb.oop_maps();
int oopmaps_size = oopmaps->nr_of_bytes();
if (!write_bytes(&oopmaps_size, sizeof(int))) {
return false;
}
uint n = write_bytes(oopmaps, oopmaps->nr_of_bytes());
if (n != (uint)oopmaps->nr_of_bytes()) {
return false;
}
return true;
}
ImmutableOopMapSet* AOTCodeReader::read_oop_map_set() {
uint offset = read_position();
int size = *(int *)addr(offset);
offset += sizeof(int);
ImmutableOopMapSet* oopmaps = (ImmutableOopMapSet *)addr(offset);
offset += size;
set_read_position(offset);
return oopmaps;
}
#ifndef PRODUCT
bool AOTCodeCache::write_asm_remarks(CodeBlob& cb) {
// Write asm remarks
uint* count_ptr = (uint *)reserve_bytes(sizeof(uint));
if (count_ptr == nullptr) {
return false;
}
uint count = 0;
bool result = cb.asm_remarks().iterate([&] (uint offset, const char* str) -> bool {
log_trace(aot, codecache, stubs)("asm remark offset=%d, str='%s'", offset, str);
uint n = write_bytes(&offset, sizeof(uint));
if (n != sizeof(uint)) {
return false;
}
const char* cstr = add_C_string(str);
int id = _table->id_for_C_string((address)cstr);
assert(id != -1, "asm remark string '%s' not found in AOTCodeAddressTable", str);
n = write_bytes(&id, sizeof(int));
if (n != sizeof(int)) {
return false;
}
count += 1;
return true;
});
*count_ptr = count;
return result;
}
void AOTCodeReader::read_asm_remarks(AsmRemarks& asm_remarks) {
// Read asm remarks
uint offset = read_position();
uint count = *(uint *)addr(offset);
offset += sizeof(uint);
for (uint i = 0; i < count; i++) {
uint remark_offset = *(uint *)addr(offset);
offset += sizeof(uint);
int remark_string_id = *(uint *)addr(offset);
offset += sizeof(int);
const char* remark = (const char*)_cache->address_for_C_string(remark_string_id);
asm_remarks.insert(remark_offset, remark);
}
set_read_position(offset);
}
bool AOTCodeCache::write_dbg_strings(CodeBlob& cb) {
// Write dbg strings
uint* count_ptr = (uint *)reserve_bytes(sizeof(uint));
if (count_ptr == nullptr) {
return false;
}
uint count = 0;
bool result = cb.dbg_strings().iterate([&] (const char* str) -> bool {
log_trace(aot, codecache, stubs)("dbg string=%s", str);
const char* cstr = add_C_string(str);
int id = _table->id_for_C_string((address)cstr);
assert(id != -1, "db string '%s' not found in AOTCodeAddressTable", str);
uint n = write_bytes(&id, sizeof(int));
if (n != sizeof(int)) {
return false;
}
count += 1;
return true;
});
*count_ptr = count;
return result;
}
void AOTCodeReader::read_dbg_strings(DbgStrings& dbg_strings) {
// Read dbg strings
uint offset = read_position();
uint count = *(uint *)addr(offset);
offset += sizeof(uint);
for (uint i = 0; i < count; i++) {
int string_id = *(uint *)addr(offset);
offset += sizeof(int);
const char* str = (const char*)_cache->address_for_C_string(string_id);
dbg_strings.insert(str);
}
set_read_position(offset);
}
#endif // PRODUCT
//======================= AOTCodeAddressTable ===============
// address table ids for generated routine entry adresses, external
// addresses and C string addresses are partitioned into positive
// integer ranges defined by the following positive base and max
// values i.e. [_extrs_base, _extrs_base + _extrs_max -1],
// [_stubs_base, _stubs_base + _stubs_max -1], [_c_str_base,
// _c_str_base + _c_str_max -1],
#define _extrs_max 380
#define _stubs_max static_cast<int>(EntryId::NUM_ENTRYIDS)
#define _extrs_base 0
#define _stubs_base (_extrs_base + _extrs_max)
#define _all_max (_stubs_base + _stubs_max)
// setter for external addresses and string addresses inserts new
// addresses in the order they are encountered them which must remain
// the same across an assembly run and subsequent production run
#define ADD_EXTERNAL_ADDRESS(addr) \
{ \
hash_address((address) addr, _extrs_base + _extrs_length); \
_extrs_addr[_extrs_length++] = (address) (addr); \
assert(_extrs_length <= _extrs_max, "increase size"); \
}
// insert into to the address hash table the index of an external
// address or a stub address in the list of external or stub
// addresses, respectively, keyed by the relevant address
void AOTCodeAddressTable::hash_address(address addr, int idx) {
// only do this if we are caching stubs and we have a non-null
// address to record
if (!AOTStubCaching) {
return;
}
if (addr == nullptr) {
return;
}
// check opened_cache because this can be called before the cache is
// properly initialized and only continue when dumping is enabled
if (opened_cache != nullptr && opened_cache->for_dump()) {
if (_hash_table == nullptr) {
_hash_table = new (mtCode) AOTCodeAddressHashTable();
}
assert(_hash_table->get(addr) == nullptr, "repeated insert of address " INTPTR_FORMAT, p2i(addr));
_hash_table->put(addr, idx);
log_trace(aot, codecache)("Address " INTPTR_FORMAT " inserted into AOT Code Cache address hash table with index '%d'",
p2i(addr), idx);
}
}
static bool initializing_extrs = false;
void AOTCodeAddressTable::init_extrs() {
if (_extrs_complete || initializing_extrs) return; // Done already
initializing_extrs = true;
_extrs_addr = NEW_C_HEAP_ARRAY(address, _extrs_max, mtCode);
_extrs_length = 0;
{
// Required by initial stubs
ADD_EXTERNAL_ADDRESS(SharedRuntime::exception_handler_for_return_address); // used by forward_exception
ADD_EXTERNAL_ADDRESS(CompressedOops::base_addr()); // used by call_stub
ADD_EXTERNAL_ADDRESS(Thread::current); // used by call_stub
ADD_EXTERNAL_ADDRESS(SharedRuntime::throw_StackOverflowError);
ADD_EXTERNAL_ADDRESS(SharedRuntime::throw_delayed_StackOverflowError);
}
// Record addresses of VM runtime methods
ADD_EXTERNAL_ADDRESS(SharedRuntime::fixup_callers_callsite);
ADD_EXTERNAL_ADDRESS(SharedRuntime::handle_wrong_method);
ADD_EXTERNAL_ADDRESS(SharedRuntime::handle_wrong_method_abstract);
ADD_EXTERNAL_ADDRESS(SharedRuntime::handle_wrong_method_ic_miss);
#if defined(AARCH64) && !defined(ZERO)
ADD_EXTERNAL_ADDRESS(JavaThread::aarch64_get_thread_helper);
#endif
#if defined(AARCH64)
ADD_EXTERNAL_ADDRESS(BarrierSetAssembler::patching_epoch_addr());
#endif
#ifndef PRODUCT
ADD_EXTERNAL_ADDRESS(&SharedRuntime::_jbyte_array_copy_ctr); // used by arraycopy stub on arm32 and x86_64
ADD_EXTERNAL_ADDRESS(&SharedRuntime::_jshort_array_copy_ctr); // used by arraycopy stub
ADD_EXTERNAL_ADDRESS(&SharedRuntime::_jint_array_copy_ctr); // used by arraycopy stub
ADD_EXTERNAL_ADDRESS(&SharedRuntime::_jlong_array_copy_ctr); // used by arraycopy stub
ADD_EXTERNAL_ADDRESS(&SharedRuntime::_oop_array_copy_ctr); // used by arraycopy stub
ADD_EXTERNAL_ADDRESS(&SharedRuntime::_checkcast_array_copy_ctr); // used by arraycopy stub
ADD_EXTERNAL_ADDRESS(&SharedRuntime::_unsafe_array_copy_ctr); // used by arraycopy stub
ADD_EXTERNAL_ADDRESS(&SharedRuntime::_generic_array_copy_ctr); // used by arraycopy stub
ADD_EXTERNAL_ADDRESS(&SharedRuntime::_unsafe_set_memory_ctr); // used by arraycopy stub
#endif /* PRODUCT */
ADD_EXTERNAL_ADDRESS(SharedRuntime::enable_stack_reserved_zone);
#if defined(AMD64) && !defined(ZERO)
ADD_EXTERNAL_ADDRESS(SharedRuntime::montgomery_multiply);
ADD_EXTERNAL_ADDRESS(SharedRuntime::montgomery_square);
#endif // defined(AMD64) && !defined(ZERO)
ADD_EXTERNAL_ADDRESS(SharedRuntime::d2f);
ADD_EXTERNAL_ADDRESS(SharedRuntime::d2i);
ADD_EXTERNAL_ADDRESS(SharedRuntime::d2l);
ADD_EXTERNAL_ADDRESS(SharedRuntime::dcos);
ADD_EXTERNAL_ADDRESS(SharedRuntime::dexp);
ADD_EXTERNAL_ADDRESS(SharedRuntime::dlog);
ADD_EXTERNAL_ADDRESS(SharedRuntime::dlog10);
ADD_EXTERNAL_ADDRESS(SharedRuntime::dpow);
#ifndef ZERO
ADD_EXTERNAL_ADDRESS(SharedRuntime::drem);
#endif
ADD_EXTERNAL_ADDRESS(SharedRuntime::dsin);
ADD_EXTERNAL_ADDRESS(SharedRuntime::dtan);
ADD_EXTERNAL_ADDRESS(SharedRuntime::f2i);
ADD_EXTERNAL_ADDRESS(SharedRuntime::f2l);
#ifndef ZERO
ADD_EXTERNAL_ADDRESS(SharedRuntime::frem);
#endif
ADD_EXTERNAL_ADDRESS(SharedRuntime::l2d);
ADD_EXTERNAL_ADDRESS(SharedRuntime::l2f);
ADD_EXTERNAL_ADDRESS(SharedRuntime::ldiv);
ADD_EXTERNAL_ADDRESS(SharedRuntime::lmul);
ADD_EXTERNAL_ADDRESS(SharedRuntime::lrem);
#if INCLUDE_JVMTI
ADD_EXTERNAL_ADDRESS(&JvmtiExport::_should_notify_object_alloc);
#endif /* INCLUDE_JVMTI */
ADD_EXTERNAL_ADDRESS(ThreadIdentifier::unsafe_offset());
// already added
// ADD_EXTERNAL_ADDRESS(Thread::current);
ADD_EXTERNAL_ADDRESS(os::javaTimeMillis);
ADD_EXTERNAL_ADDRESS(os::javaTimeNanos);
#ifndef PRODUCT
ADD_EXTERNAL_ADDRESS(os::breakpoint);
#endif
ADD_EXTERNAL_ADDRESS(StubRoutines::crc_table_addr());
#ifndef PRODUCT
ADD_EXTERNAL_ADDRESS(&SharedRuntime::_partial_subtype_ctr);
#endif
#if INCLUDE_JFR
ADD_EXTERNAL_ADDRESS(JfrIntrinsicSupport::write_checkpoint);
ADD_EXTERNAL_ADDRESS(JfrIntrinsicSupport::return_lease);
#endif
ADD_EXTERNAL_ADDRESS(UpcallLinker::handle_uncaught_exception); // used by upcall_stub_exception_handler
{
// Required by Shared blobs
ADD_EXTERNAL_ADDRESS(Deoptimization::fetch_unroll_info);
ADD_EXTERNAL_ADDRESS(Deoptimization::unpack_frames);
ADD_EXTERNAL_ADDRESS(SafepointSynchronize::handle_polling_page_exception);
ADD_EXTERNAL_ADDRESS(SharedRuntime::resolve_opt_virtual_call_C);
ADD_EXTERNAL_ADDRESS(SharedRuntime::resolve_virtual_call_C);
ADD_EXTERNAL_ADDRESS(SharedRuntime::resolve_static_call_C);
// already added
// ADD_EXTERNAL_ADDRESS(SharedRuntime::throw_delayed_StackOverflowError);
ADD_EXTERNAL_ADDRESS(SharedRuntime::throw_AbstractMethodError);
ADD_EXTERNAL_ADDRESS(SharedRuntime::throw_IncompatibleClassChangeError);
ADD_EXTERNAL_ADDRESS(SharedRuntime::throw_NullPointerException_at_call);
}
#ifdef COMPILER1
{
// Required by C1 blobs
ADD_EXTERNAL_ADDRESS(static_cast<int (*)(oopDesc*)>(SharedRuntime::dtrace_object_alloc));
ADD_EXTERNAL_ADDRESS(SharedRuntime::register_finalizer);
ADD_EXTERNAL_ADDRESS(Runtime1::is_instance_of);
ADD_EXTERNAL_ADDRESS(Runtime1::exception_handler_for_pc);
ADD_EXTERNAL_ADDRESS(Runtime1::check_abort_on_vm_exception);
ADD_EXTERNAL_ADDRESS(Runtime1::new_instance);
ADD_EXTERNAL_ADDRESS(Runtime1::counter_overflow);
ADD_EXTERNAL_ADDRESS(Runtime1::new_type_array);
ADD_EXTERNAL_ADDRESS(Runtime1::new_object_array);
ADD_EXTERNAL_ADDRESS(Runtime1::new_multi_array);
ADD_EXTERNAL_ADDRESS(Runtime1::throw_range_check_exception);
ADD_EXTERNAL_ADDRESS(Runtime1::throw_index_exception);
ADD_EXTERNAL_ADDRESS(Runtime1::throw_div0_exception);
ADD_EXTERNAL_ADDRESS(Runtime1::throw_null_pointer_exception);
ADD_EXTERNAL_ADDRESS(Runtime1::throw_array_store_exception);
ADD_EXTERNAL_ADDRESS(Runtime1::throw_class_cast_exception);
ADD_EXTERNAL_ADDRESS(Runtime1::throw_incompatible_class_change_error);
ADD_EXTERNAL_ADDRESS(Runtime1::monitorenter);
ADD_EXTERNAL_ADDRESS(Runtime1::monitorexit);
ADD_EXTERNAL_ADDRESS(Runtime1::deoptimize);
ADD_EXTERNAL_ADDRESS(Runtime1::access_field_patching);
ADD_EXTERNAL_ADDRESS(Runtime1::move_klass_patching);
ADD_EXTERNAL_ADDRESS(Runtime1::move_mirror_patching);
ADD_EXTERNAL_ADDRESS(Runtime1::move_appendix_patching);
ADD_EXTERNAL_ADDRESS(Runtime1::predicate_failed_trap);
ADD_EXTERNAL_ADDRESS(Runtime1::unimplemented_entry);
// already added
// ADD_EXTERNAL_ADDRESS(Thread::current);
ADD_EXTERNAL_ADDRESS(CompressedKlassPointers::base_addr());
}
#endif
#ifdef COMPILER2
{
// Required by C2 blobs
ADD_EXTERNAL_ADDRESS(Deoptimization::uncommon_trap);
ADD_EXTERNAL_ADDRESS(OptoRuntime::handle_exception_C);
ADD_EXTERNAL_ADDRESS(OptoRuntime::new_instance_C);
ADD_EXTERNAL_ADDRESS(OptoRuntime::new_array_C);
ADD_EXTERNAL_ADDRESS(OptoRuntime::new_array_nozero_C);
ADD_EXTERNAL_ADDRESS(OptoRuntime::multianewarray2_C);
ADD_EXTERNAL_ADDRESS(OptoRuntime::multianewarray3_C);
ADD_EXTERNAL_ADDRESS(OptoRuntime::multianewarray4_C);
ADD_EXTERNAL_ADDRESS(OptoRuntime::multianewarray5_C);
ADD_EXTERNAL_ADDRESS(OptoRuntime::multianewarrayN_C);
ADD_EXTERNAL_ADDRESS(OptoRuntime::complete_monitor_locking_C);
ADD_EXTERNAL_ADDRESS(OptoRuntime::monitor_notify_C);
ADD_EXTERNAL_ADDRESS(OptoRuntime::monitor_notifyAll_C);
ADD_EXTERNAL_ADDRESS(OptoRuntime::rethrow_C);
ADD_EXTERNAL_ADDRESS(OptoRuntime::slow_arraycopy_C);
ADD_EXTERNAL_ADDRESS(OptoRuntime::register_finalizer_C);
ADD_EXTERNAL_ADDRESS(OptoRuntime::vthread_end_first_transition_C);
ADD_EXTERNAL_ADDRESS(OptoRuntime::vthread_start_final_transition_C);
ADD_EXTERNAL_ADDRESS(OptoRuntime::vthread_start_transition_C);
ADD_EXTERNAL_ADDRESS(OptoRuntime::vthread_end_transition_C);
// already added for
#if defined(AARCH64) && ! defined(PRODUCT)
ADD_EXTERNAL_ADDRESS(JavaThread::verify_cross_modify_fence_failure);
#endif // AARCH64 && !PRODUCT
}
#endif // COMPILER2
#if INCLUDE_G1GC
ADD_EXTERNAL_ADDRESS(G1BarrierSetRuntime::write_ref_field_pre_entry);
ADD_EXTERNAL_ADDRESS(G1BarrierSetRuntime::write_ref_array_pre_narrow_oop_entry); // used by arraycopy stubs
ADD_EXTERNAL_ADDRESS(G1BarrierSetRuntime::write_ref_array_pre_oop_entry); // used by arraycopy stubs
ADD_EXTERNAL_ADDRESS(G1BarrierSetRuntime::write_ref_array_post_entry); // used by arraycopy stubs
ADD_EXTERNAL_ADDRESS(BarrierSetNMethod::nmethod_stub_entry_barrier); // used by method_entry_barrier
#endif
#if INCLUDE_SHENANDOAHGC
ADD_EXTERNAL_ADDRESS(ShenandoahRuntime::write_barrier_pre);
ADD_EXTERNAL_ADDRESS(ShenandoahRuntime::load_reference_barrier_strong);
ADD_EXTERNAL_ADDRESS(ShenandoahRuntime::load_reference_barrier_strong_narrow);
ADD_EXTERNAL_ADDRESS(ShenandoahRuntime::load_reference_barrier_weak);
ADD_EXTERNAL_ADDRESS(ShenandoahRuntime::load_reference_barrier_weak_narrow);
ADD_EXTERNAL_ADDRESS(ShenandoahRuntime::load_reference_barrier_phantom);
ADD_EXTERNAL_ADDRESS(ShenandoahRuntime::load_reference_barrier_phantom_narrow);
ADD_EXTERNAL_ADDRESS(ShenandoahRuntime::arraycopy_barrier_oop);
ADD_EXTERNAL_ADDRESS(ShenandoahRuntime::arraycopy_barrier_narrow_oop);
#endif
#if INCLUDE_ZGC
ADD_EXTERNAL_ADDRESS(ZBarrierSetRuntime::load_barrier_on_oop_field_preloaded_addr());
ADD_EXTERNAL_ADDRESS(ZBarrierSetRuntime::load_barrier_on_oop_field_preloaded_store_good_addr());
ADD_EXTERNAL_ADDRESS(ZBarrierSetRuntime::load_barrier_on_weak_oop_field_preloaded_addr());
ADD_EXTERNAL_ADDRESS(ZBarrierSetRuntime::load_barrier_on_phantom_oop_field_preloaded_addr());
ADD_EXTERNAL_ADDRESS(ZBarrierSetRuntime::no_keepalive_load_barrier_on_weak_oop_field_preloaded_addr());
ADD_EXTERNAL_ADDRESS(ZBarrierSetRuntime::no_keepalive_load_barrier_on_phantom_oop_field_preloaded_addr());
ADD_EXTERNAL_ADDRESS(ZBarrierSetRuntime::store_barrier_on_oop_field_with_healing_addr());
ADD_EXTERNAL_ADDRESS(ZBarrierSetRuntime::store_barrier_on_oop_field_without_healing_addr());
ADD_EXTERNAL_ADDRESS(ZBarrierSetRuntime::no_keepalive_store_barrier_on_oop_field_without_healing_addr());
ADD_EXTERNAL_ADDRESS(ZBarrierSetRuntime::store_barrier_on_native_oop_field_without_healing_addr());
ADD_EXTERNAL_ADDRESS(ZBarrierSetRuntime::load_barrier_on_oop_array_addr());
ADD_EXTERNAL_ADDRESS(ZPointerVectorLoadBadMask);
ADD_EXTERNAL_ADDRESS(ZPointerVectorStoreBadMask);
ADD_EXTERNAL_ADDRESS(ZPointerVectorStoreGoodMask);
#if defined(AMD64)
ADD_EXTERNAL_ADDRESS(&ZPointerLoadShift);
ADD_EXTERNAL_ADDRESS(&ZPointerLoadShiftTable);
#endif
#endif
#ifndef ZERO
#if defined(AMD64) || defined(AARCH64) || defined(RISCV64)
ADD_EXTERNAL_ADDRESS(MacroAssembler::debug64);
#endif // defined(AMD64) || defined(AARCH64) || defined(RISCV64)
#if defined(AMD64)
ADD_EXTERNAL_ADDRESS(warning);
#endif // defined(AMD64)
#endif // ZERO
// addresses of fields in AOT runtime constants area
address* p = AOTRuntimeConstants::field_addresses_list();
while (*p != nullptr) {
address to_add = (address)*p++;
ADD_EXTERNAL_ADDRESS(to_add);
}
log_debug(aot, codecache, init)("External addresses opened and recorded");
// allocate storage for stub entries
_stubs_addr = NEW_C_HEAP_ARRAY(address, _stubs_max, mtCode);
log_debug(aot, codecache, init)("Stub addresses opened");
}
void AOTCodeAddressTable::init_extrs2() {
assert(initializing_extrs && !_extrs_complete,
"invalid sequence for init_extrs2");
{
ADD_EXTERNAL_ADDRESS(Continuation::prepare_thaw); // used by cont_thaw
ADD_EXTERNAL_ADDRESS(Continuation::thaw_entry()); // used by cont_thaw
ADD_EXTERNAL_ADDRESS(ContinuationEntry::thaw_call_pc_address()); // used by cont_preempt_stub
}
_extrs_complete = true;
initializing_extrs = false;
log_debug(aot, codecache, init)("External addresses recorded and closed");
}
void AOTCodeAddressTable::add_external_addresses(GrowableArray<address>& addresses) {
assert(initializing_extrs && !_extrs_complete,
"invalid sequence for add_external_addresses");
for (int i = 0; i < addresses.length(); i++) {
ADD_EXTERNAL_ADDRESS(addresses.at(i));
}
log_debug(aot, codecache, init)("Recorded %d additional external addresses",
addresses.length());
}
void AOTCodeAddressTable::add_stub_entry(EntryId entry_id, address a) {
assert(_extrs_complete || initializing_extrs,
"recording stub entry address before external addresses complete");
assert(!(StubInfo::is_shared(StubInfo::stub(entry_id)) && _shared_stubs_complete), "too late to add shared entry");
assert(!(StubInfo::is_stubgen(StubInfo::stub(entry_id)) && _stubgen_stubs_complete), "too late to add stubgen entry");
assert(!(StubInfo::is_c1(StubInfo::stub(entry_id)) && _c1_stubs_complete), "too late to add c1 entry");
assert(!(StubInfo::is_c2(StubInfo::stub(entry_id)) && _c2_stubs_complete), "too late to add c2 entry");
log_debug(aot, stubs)("Recording address 0x%p for %s entry %s", a, StubInfo::name(StubInfo::stubgroup(entry_id)), StubInfo::name(entry_id));
int idx = static_cast<int>(entry_id);
hash_address(a, _stubs_base + idx);
_stubs_addr[idx] = a;
}
void AOTCodeAddressTable::set_shared_stubs_complete() {
assert(!_shared_stubs_complete, "repeated close for shared stubs!");
_shared_stubs_complete = true;
log_debug(aot, codecache, init)("Shared stubs closed");
}
void AOTCodeAddressTable::set_c1_stubs_complete() {
assert(!_c1_stubs_complete, "repeated close for c1 stubs!");
_c1_stubs_complete = true;
log_debug(aot, codecache, init)("C1 stubs closed");
}
void AOTCodeAddressTable::set_c2_stubs_complete() {
assert(!_c2_stubs_complete, "repeated close for c2 stubs!");
_c2_stubs_complete = true;
log_debug(aot, codecache, init)("C2 stubs closed");
}
void AOTCodeAddressTable::set_stubgen_stubs_complete() {
assert(!_stubgen_stubs_complete, "repeated close for stubgen stubs!");
_stubgen_stubs_complete = true;
log_debug(aot, codecache, init)("StubGen stubs closed");
}
#ifdef PRODUCT
#define MAX_STR_COUNT 200
#else
#define MAX_STR_COUNT 500
#endif
#define _c_str_max MAX_STR_COUNT
static const int _c_str_base = _all_max;
static const char* _C_strings_in[MAX_STR_COUNT] = {nullptr}; // Incoming strings
static const char* _C_strings[MAX_STR_COUNT] = {nullptr}; // Our duplicates
static int _C_strings_count = 0;
static int _C_strings_s[MAX_STR_COUNT] = {0};
static int _C_strings_id[MAX_STR_COUNT] = {0};
static int _C_strings_used = 0;
void AOTCodeCache::load_strings() {
uint strings_count = _load_header->strings_count();
if (strings_count == 0) {
return;
}
uint strings_offset = _load_header->strings_offset();
uint* string_lengths = (uint*)addr(strings_offset);
strings_offset += (strings_count * sizeof(uint));
uint strings_size = _load_header->entries_offset() - strings_offset;
// We have to keep cached strings longer than _cache buffer
// because they are refernced from compiled code which may
// still be executed on VM exit after _cache is freed.
char* p = NEW_C_HEAP_ARRAY(char, strings_size+1, mtCode);
memcpy(p, addr(strings_offset), strings_size);
_C_strings_buf = p;
assert(strings_count <= MAX_STR_COUNT, "sanity");
for (uint i = 0; i < strings_count; i++) {
_C_strings[i] = p;
uint len = string_lengths[i];
_C_strings_s[i] = i;
_C_strings_id[i] = i;
log_trace(aot, codecache, stringtable)("load_strings: _C_strings[%d] " INTPTR_FORMAT " '%s'", i, p2i(p), p);
p += len;
}
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);
_C_strings_count = strings_count;
_C_strings_used = strings_count;
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);
}
int AOTCodeCache::store_strings() {
if (_C_strings_used > 0) {
MutexLocker ml(AOTCodeCStrings_lock, Mutex::_no_safepoint_check_flag);
uint offset = _write_position;
uint length = 0;
uint* lengths = (uint *)reserve_bytes(sizeof(uint) * _C_strings_used);
if (lengths == nullptr) {
return -1;
}
for (int i = 0; i < _C_strings_used; i++) {
const char* str = _C_strings[_C_strings_s[i]];
log_trace(aot, codecache, stringtable)("store_strings: _C_strings[%d] " INTPTR_FORMAT " '%s'", i, p2i(str), str);
uint len = (uint)strlen(str) + 1;
length += len;
assert(len < 1000, "big string: %s", str);
lengths[i] = len;
uint n = write_bytes(str, len);
if (n != len) {
return -1;
}
}
log_debug(aot, codecache, exit)(" Wrote %d C strings of total length %d at offset %d to AOT Code Cache",
_C_strings_used, length, offset);
}
return _C_strings_used;
}
const char* AOTCodeCache::add_C_string(const char* str) {
if (is_on_for_dump() && str != nullptr) {
MutexLocker ml(AOTCodeCStrings_lock, Mutex::_no_safepoint_check_flag);
AOTCodeAddressTable* table = addr_table();
if (table != nullptr) {
return table->add_C_string(str);
}
}
return str;
}
const char* AOTCodeAddressTable::add_C_string(const char* str) {
if (_extrs_complete || initializing_extrs) {
// Check previous strings address
for (int i = 0; i < _C_strings_count; i++) {
if (_C_strings_in[i] == str) {
return _C_strings[i]; // Found previous one - return our duplicate
} else if (strcmp(_C_strings[i], str) == 0) {
return _C_strings[i];
}
}
// Add new one
if (_C_strings_count < MAX_STR_COUNT) {
// Passed in string can be freed and used space become inaccessible.
// Keep original address but duplicate string for future compare.
_C_strings_id[_C_strings_count] = -1; // Init
_C_strings_in[_C_strings_count] = str;
const char* dup = os::strdup(str);
_C_strings[_C_strings_count++] = dup;
log_trace(aot, codecache, stringtable)("add_C_string: [%d] " INTPTR_FORMAT " '%s'", _C_strings_count, p2i(dup), dup);
return dup;
} else {
assert(false, "Number of C strings >= MAX_STR_COUNT");
}
}
return str;
}
int AOTCodeAddressTable::id_for_C_string(address str) {
if (str == nullptr) {
return -1;
}
MutexLocker ml(AOTCodeCStrings_lock, Mutex::_no_safepoint_check_flag);
for (int i = 0; i < _C_strings_count; i++) {
if (_C_strings[i] == (const char*)str) { // found
int id = _C_strings_id[i];
if (id >= 0) {
assert(id < _C_strings_used, "%d >= %d", id , _C_strings_used);
return id; // Found recorded
}
log_trace(aot, codecache, stringtable)("id_for_C_string: _C_strings[%d ==> %d] " INTPTR_FORMAT " '%s'", i, _C_strings_used, p2i(str), str);
// Not found in recorded, add new
id = _C_strings_used++;
_C_strings_s[id] = i;
_C_strings_id[i] = id;
return id;
}
}
return -1;
}
address AOTCodeAddressTable::address_for_C_string(int idx) {
assert(idx < _C_strings_count, "sanity");
return (address)_C_strings[idx];
}
static int search_address(address addr, address* table, uint length) {
for (int i = 0; i < (int)length; i++) {
if (table[i] == addr) {
return i;
}
}
return BAD_ADDRESS_ID;
}
address AOTCodeAddressTable::address_for_id(int idx) {
assert(_extrs_complete || initializing_extrs, "AOT Code Cache VM runtime addresses table is not complete");
if (idx == -1) {
return (address)-1;
}
uint id = (uint)idx;
// special case for symbols based relative to os::init
if (id > (_c_str_base + _c_str_max)) {
return (address)os::init + idx;
}
if (idx < 0) {
fatal("Incorrect id %d for AOT Code Cache addresses table", id);
return nullptr;
}
// no need to compare unsigned id against 0
if (/* id >= _extrs_base && */ id < _extrs_length) {
return _extrs_addr[id - _extrs_base];
}
if (id >= _stubs_base && id < _c_str_base) {
return _stubs_addr[id - _stubs_base];
}
if (id >= _c_str_base && id < (_c_str_base + (uint)_C_strings_count)) {
return address_for_C_string(id - _c_str_base);
}
fatal("Incorrect id %d for AOT Code Cache addresses table", id);
return nullptr;
}
int AOTCodeAddressTable::id_for_address(address addr, RelocIterator reloc, CodeBlob* code_blob) {
assert(_extrs_complete || initializing_extrs, "AOT Code Cache VM runtime addresses table is not complete");
int id = -1;
if (addr == (address)-1) { // Static call stub has jump to itself
return id;
}
// Check card_table_base address first since it can point to any address
BarrierSet* bs = BarrierSet::barrier_set();
bool is_const_card_table_base = !UseG1GC && !UseShenandoahGC && bs->is_a(BarrierSet::CardTableBarrierSet);
guarantee(!is_const_card_table_base || addr != ci_card_table_address_const(), "sanity");
// fast path for stubs and external addresses
if (_hash_table != nullptr) {
int *result = _hash_table->get(addr);
if (result != nullptr) {
id = *result;
log_trace(aot, codecache)("Address " INTPTR_FORMAT " retrieved from AOT Code Cache address hash table with index '%d'",
p2i(addr), id);
return id;
}
}
// Seach for C string
id = id_for_C_string(addr);
if (id >= 0) {
return id + _c_str_base;
}
if (StubRoutines::contains(addr) || CodeCache::find_blob(addr) != nullptr) {
// Search for a matching stub entry
id = search_address(addr, _stubs_addr, _stubs_max);
if (id < 0) {
StubCodeDesc* desc = StubCodeDesc::desc_for(addr);
if (desc == nullptr) {
desc = StubCodeDesc::desc_for(addr + frame::pc_return_offset);
}
const char* sub_name = (desc != nullptr) ? desc->name() : "<unknown>";
assert(false, "Address " INTPTR_FORMAT " for Stub:%s is missing in AOT Code Cache addresses table", p2i(addr), sub_name);
} else {
return id + _stubs_base;
}
} else {
// Search in runtime functions
id = search_address(addr, _extrs_addr, _extrs_length);
if (id < 0) {
ResourceMark rm;
const int buflen = 1024;
char* func_name = NEW_RESOURCE_ARRAY(char, buflen);
int offset = 0;
if (os::dll_address_to_function_name(addr, func_name, buflen, &offset)) {
if (offset > 0) {
// Could be address of C string
uint dist = (uint)pointer_delta(addr, (address)os::init, 1);
log_debug(aot, codecache)("Address " INTPTR_FORMAT " (offset %d) for runtime target '%s' is missing in AOT Code Cache addresses table",
p2i(addr), dist, (const char*)addr);
assert(dist > (uint)(_all_max + MAX_STR_COUNT), "change encoding of distance");
return dist;
}
#ifdef ASSERT
reloc.print_current_on(tty);
code_blob->print_on(tty);
code_blob->print_code_on(tty);
assert(false, "Address " INTPTR_FORMAT " for runtime target '%s+%d' is missing in AOT Code Cache addresses table", p2i(addr), func_name, offset);
#endif
} else {
#ifdef ASSERT
reloc.print_current_on(tty);
code_blob->print_on(tty);
code_blob->print_code_on(tty);
os::find(addr, tty);
assert(false, "Address " INTPTR_FORMAT " for <unknown>/('%s') is missing in AOT Code Cache addresses table", p2i(addr), (const char*)addr);
#endif
}
} else {
return _extrs_base + id;
}
}
return id;
}
AOTRuntimeConstants AOTRuntimeConstants::_aot_runtime_constants;
void AOTRuntimeConstants::initialize_from_runtime() {
BarrierSet* bs = BarrierSet::barrier_set();
address card_table_base = nullptr;
uint grain_shift = 0;
#if INCLUDE_G1GC
if (bs->is_a(BarrierSet::G1BarrierSet)) {
grain_shift = G1HeapRegion::LogOfHRGrainBytes;
} else
#endif
#if INCLUDE_SHENANDOAHGC
if (bs->is_a(BarrierSet::ShenandoahBarrierSet)) {
grain_shift = 0;
} else
#endif
if (bs->is_a(BarrierSet::CardTableBarrierSet)) {
CardTable::CardValue* base = ci_card_table_address_const();
assert(base != nullptr, "unexpected byte_map_base");
card_table_base = base;
CardTableBarrierSet* ctbs = barrier_set_cast<CardTableBarrierSet>(bs);
grain_shift = ctbs->grain_shift();
}
_aot_runtime_constants._card_table_base = card_table_base;
_aot_runtime_constants._grain_shift = grain_shift;
}
address AOTRuntimeConstants::_field_addresses_list[] = {
((address)&_aot_runtime_constants._card_table_base),
((address)&_aot_runtime_constants._grain_shift),
nullptr
};
address AOTRuntimeConstants::card_table_base_address() {
assert(UseSerialGC || UseParallelGC, "Only these GCs have constant card table base");
return (address)&_aot_runtime_constants._card_table_base;
}
// This is called after initialize() but before init2()
// and _cache is not set yet.
void AOTCodeCache::print_on(outputStream* st) {
if (opened_cache != nullptr && opened_cache->for_use()) {
st->print_cr("\nAOT Code Cache");
uint count = opened_cache->_load_header->entries_count();
uint* search_entries = (uint*)opened_cache->addr(opened_cache->_load_header->entries_offset()); // [id, index]
AOTCodeEntry* load_entries = (AOTCodeEntry*)(search_entries + 2 * count);
for (uint i = 0; i < count; i++) {
// Use search_entries[] to order ouput
int index = search_entries[2*i + 1];
AOTCodeEntry* entry = &(load_entries[index]);
uint entry_position = entry->offset();
uint name_offset = entry->name_offset() + entry_position;
const char* saved_name = opened_cache->addr(name_offset);
st->print_cr("%4u: %10s idx:%4u Id:%u size=%u '%s'",
i, aot_code_entry_kind_name[entry->kind()], index, entry->id(), entry->size(), saved_name);
}
}
}
// methods for managing entries in multi-stub blobs
AOTStubData::AOTStubData(BlobId blob_id) :
_blob_id(blob_id),
_cached_blob(nullptr),
_stub_cnt(0),
_ranges(nullptr),
_flags(0) {
assert(StubInfo::is_stubgen(blob_id),
"AOTStubData expects a multi-stub blob not %s",
StubInfo::name(blob_id));
// we cannot save or restore preuniversestubs because the cache
// cannot be accessed before initialising the universe
if (blob_id == BlobId::stubgen_preuniverse_id) {
// invalidate any attempt to use this
_flags |= INVALID;
return;
}
if (AOTCodeCache::is_on()) {
// allow update of stub entry addresses
if (AOTCodeCache::is_using_stub()) {
// allow stub loading
_flags |= USING;
}
if (AOTCodeCache::is_dumping_stub()) {
// allow stub saving
_flags |= DUMPING;
}
// we need to track all the blob's entries
_stub_cnt = StubInfo::stub_count(_blob_id);
_ranges = NEW_C_HEAP_ARRAY(StubAddrRange, _stub_cnt, mtCode);
for (int i = 0; i < _stub_cnt; i++) {
_ranges[i].default_init();
}
}
}
bool AOTStubData::load_code_blob() {
assert(is_using(), "should not call");
assert(!is_invalid() && _cached_blob == nullptr, "repeated init");
_cached_blob = AOTCodeCache::load_code_blob(AOTCodeEntry::StubGenBlob,
_blob_id,
this);
if (_cached_blob == nullptr) {
set_invalid();
return false;
} else {
return true;
}
}
bool AOTStubData::store_code_blob(CodeBlob& new_blob, CodeBuffer *code_buffer) {
assert(is_dumping(), "should not call");
assert(_cached_blob == nullptr, "should not be loading and storing!");
if (!AOTCodeCache::store_code_blob(new_blob,
AOTCodeEntry::StubGenBlob,
_blob_id, this, code_buffer)) {
set_invalid();
return false;
} else {
return true;
}
}
address AOTStubData::load_archive_data(StubId stub_id, address& end, GrowableArray<address>* entries, GrowableArray<address>* extras) {
assert(StubInfo::blob(stub_id) == _blob_id, "sanity check");
if (is_invalid()) {
return nullptr;
}
int idx = StubInfo::stubgen_offset_in_blob(_blob_id, stub_id);
assert(idx >= 0 && idx < _stub_cnt, "invalid index %d for stub count %d", idx, _stub_cnt);
// ensure we have a valid associated range
StubAddrRange &range = _ranges[idx];
int base = range.start_index();
if (base < 0) {
#ifdef DEBUG
// reset index so we can idenitfy which ones we failed to find
range.init_entry(-2, 0);
#endif
return nullptr;
}
int count = range.count();
assert(base >= 0, "sanity");
assert(count >= 2, "sanity");
// first two saved addresses are start and end
address start = _address_array.at(base);
end = _address_array.at(base + 1);
assert(start != nullptr, "failed to load start address of stub %s", StubInfo::name(stub_id));
assert(end != nullptr, "failed to load end address of stub %s", StubInfo::name(stub_id));
assert(start < end, "start address %p should be less than end %p address for stub %s", start, end, StubInfo::name(stub_id));
int entry_count = StubInfo::entry_count(stub_id);
// the address count must at least include the stub start, end
// and secondary addresses
assert(count >= entry_count + 1, "stub %s requires %d saved addresses but only has %d", StubInfo::name(stub_id), entry_count + 1, count);
// caller must retrieve secondary entries if and only if they exist
assert((entry_count == 1) == (entries == nullptr), "trying to retrieve wrong number of entries for stub %s", StubInfo::name(stub_id));
int index = 2;
if (entries != nullptr) {
assert(entries->length() == 0, "non-empty array when retrieving entries for stub %s!", StubInfo::name(stub_id));
while (index < entry_count + 1) {
address entry = _address_array.at(base + index++);
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));
entries->append(entry);
}
}
// caller must retrieve extras if and only if they exist
assert((index < count) == (extras != nullptr), "trying to retrieve wrong number of extras for stub %s", StubInfo::name(stub_id));
if (extras != nullptr) {
assert(extras->length() == 0, "non-empty array when retrieving extras for stub %s!", StubInfo::name(stub_id));
while (index < count) {
address extra = _address_array.at(base + index++);
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));
extras->append(extra);
}
}
return start;
}
void AOTStubData::store_archive_data(StubId stub_id, address start, address end, GrowableArray<address>* entries, GrowableArray<address>* extras) {
assert(StubInfo::blob(stub_id) == _blob_id, "sanity check");
assert(start != nullptr, "start address cannot be null");
assert(end != nullptr, "end address cannot be null");
assert(start < end, "start address %p should be less than end %p address for stub %s", start, end, StubInfo::name(stub_id));
int idx = StubInfo::stubgen_offset_in_blob(_blob_id, stub_id);
StubAddrRange& range = _ranges[idx];
assert(range.start_index() == -1, "sanity");
int base = _address_array.length();
assert(base >= 0, "sanity");
// first two saved addresses are start and end
_address_array.append(start);
_address_array.append(end);
// caller must save secondary entries if and only if they exist
assert((StubInfo::entry_count(stub_id) == 1) == (entries == nullptr), "trying to save wrong number of entries for stub %s", StubInfo::name(stub_id));
if (entries != nullptr) {
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));
for (int i = 0; i < entries->length(); i++) {
address entry = entries->at(i);
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));
_address_array.append(entry);
}
}
// caller may wish to save extra addresses
if (extras != nullptr) {
for (int i = 0; i < extras->length(); i++) {
address extra = extras->at(i);
// handler range end may be end -- it gets restored as nullptr
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));
_address_array.append(extra);
}
}
range.init_entry(base, _address_array.length() - base);
}
Reference in New Issue View Git Blame Copy Permalink