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/*
* Copyright (C) 2011 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include "oat_writer.h"
#include <zlib.h>
#include "base/stl_util.h"
#include "base/unix_file/fd_file.h"
#include "class_linker.h"
#include "dex_file-inl.h"
#include "gc/space/space.h"
#include "mirror/art_method-inl.h"
#include "mirror/array.h"
#include "mirror/class_loader.h"
#include "mirror/object-inl.h"
#include "os.h"
#include "output_stream.h"
#include "safe_map.h"
#include "scoped_thread_state_change.h"
#include "verifier/method_verifier.h"
namespace art {
OatWriter::OatWriter(const std::vector<const DexFile*>& dex_files,
uint32_t image_file_location_oat_checksum,
uint32_t image_file_location_oat_begin,
const std::string& image_file_location,
const CompilerDriver* compiler)
: compiler_driver_(compiler),
dex_files_(&dex_files),
image_file_location_oat_checksum_(image_file_location_oat_checksum),
image_file_location_oat_begin_(image_file_location_oat_begin),
image_file_location_(image_file_location),
oat_header_(NULL),
size_dex_file_alignment_(0),
size_executable_offset_alignment_(0),
size_oat_header_(0),
size_oat_header_image_file_location_(0),
size_dex_file_(0),
size_interpreter_to_interpreter_bridge_(0),
size_interpreter_to_compiled_code_bridge_(0),
size_jni_dlsym_lookup_(0),
size_portable_resolution_trampoline_(0),
size_portable_to_interpreter_bridge_(0),
size_quick_resolution_trampoline_(0),
size_quick_to_interpreter_bridge_(0),
size_trampoline_alignment_(0),
size_code_size_(0),
size_code_(0),
size_code_alignment_(0),
size_mapping_table_(0),
size_vmap_table_(0),
size_gc_map_(0),
size_oat_dex_file_location_size_(0),
size_oat_dex_file_location_data_(0),
size_oat_dex_file_location_checksum_(0),
size_oat_dex_file_offset_(0),
size_oat_dex_file_methods_offsets_(0),
size_oat_class_status_(0),
size_oat_class_method_offsets_(0) {
size_t offset = InitOatHeader();
offset = InitOatDexFiles(offset);
offset = InitDexFiles(offset);
offset = InitOatClasses(offset);
offset = InitOatCode(offset);
offset = InitOatCodeDexFiles(offset);
size_ = offset;
CHECK_EQ(dex_files_->size(), oat_dex_files_.size());
CHECK(image_file_location.empty() == compiler->IsImage());
}
OatWriter::~OatWriter() {
delete oat_header_;
STLDeleteElements(&oat_dex_files_);
STLDeleteElements(&oat_classes_);
}
size_t OatWriter::InitOatHeader() {
// create the OatHeader
oat_header_ = new OatHeader(compiler_driver_->GetInstructionSet(),
dex_files_,
image_file_location_oat_checksum_,
image_file_location_oat_begin_,
image_file_location_);
size_t offset = sizeof(*oat_header_);
offset += image_file_location_.size();
return offset;
}
size_t OatWriter::InitOatDexFiles(size_t offset) {
// create the OatDexFiles
for (size_t i = 0; i != dex_files_->size(); ++i) {
const DexFile* dex_file = (*dex_files_)[i];
CHECK(dex_file != NULL);
OatDexFile* oat_dex_file = new OatDexFile(offset, *dex_file);
oat_dex_files_.push_back(oat_dex_file);
offset += oat_dex_file->SizeOf();
}
return offset;
}
size_t OatWriter::InitDexFiles(size_t offset) {
// calculate the offsets within OatDexFiles to the DexFiles
for (size_t i = 0; i != dex_files_->size(); ++i) {
// dex files are required to be 4 byte aligned
size_t original_offset = offset;
offset = RoundUp(offset, 4);
size_dex_file_alignment_ += offset - original_offset;
// set offset in OatDexFile to DexFile
oat_dex_files_[i]->dex_file_offset_ = offset;
const DexFile* dex_file = (*dex_files_)[i];
offset += dex_file->GetHeader().file_size_;
}
return offset;
}
size_t OatWriter::InitOatClasses(size_t offset) {
// create the OatClasses
// calculate the offsets within OatDexFiles to OatClasses
for (size_t i = 0; i != dex_files_->size(); ++i) {
const DexFile* dex_file = (*dex_files_)[i];
for (size_t class_def_index = 0;
class_def_index < dex_file->NumClassDefs();
class_def_index++) {
oat_dex_files_[i]->methods_offsets_[class_def_index] = offset;
const DexFile::ClassDef& class_def = dex_file->GetClassDef(class_def_index);
const byte* class_data = dex_file->GetClassData(class_def);
uint32_t num_methods = 0;
if (class_data != NULL) { // ie not an empty class, such as a marker interface
ClassDataItemIterator it(*dex_file, class_data);
size_t num_direct_methods = it.NumDirectMethods();
size_t num_virtual_methods = it.NumVirtualMethods();
num_methods = num_direct_methods + num_virtual_methods;
}
ClassReference class_ref(dex_file, class_def_index);
CompiledClass* compiled_class = compiler_driver_->GetCompiledClass(class_ref);
mirror::Class::Status status;
if (compiled_class != NULL) {
status = compiled_class->GetStatus();
} else if (verifier::MethodVerifier::IsClassRejected(class_ref)) {
status = mirror::Class::kStatusError;
} else {
status = mirror::Class::kStatusNotReady;
}
OatClass* oat_class = new OatClass(offset, status, num_methods);
oat_classes_.push_back(oat_class);
offset += oat_class->SizeOf();
}
oat_dex_files_[i]->UpdateChecksum(*oat_header_);
}
return offset;
}
size_t OatWriter::InitOatCode(size_t offset) {
// calculate the offsets within OatHeader to executable code
size_t old_offset = offset;
// required to be on a new page boundary
offset = RoundUp(offset, kPageSize);
oat_header_->SetExecutableOffset(offset);
size_executable_offset_alignment_ = offset - old_offset;
if (compiler_driver_->IsImage()) {
InstructionSet instruction_set = compiler_driver_->GetInstructionSet();
#define DO_TRAMPOLINE(field, fn_name) \
offset = CompiledCode::AlignCode(offset, instruction_set); \
oat_header_->Set ## fn_name ## Offset(offset); \
field.reset(compiler_driver_->Create ## fn_name()); \
offset += field->size();
DO_TRAMPOLINE(interpreter_to_interpreter_bridge_, InterpreterToInterpreterBridge);
DO_TRAMPOLINE(interpreter_to_compiled_code_bridge_, InterpreterToCompiledCodeBridge);
DO_TRAMPOLINE(jni_dlsym_lookup_, JniDlsymLookup);
DO_TRAMPOLINE(portable_resolution_trampoline_, PortableResolutionTrampoline);
DO_TRAMPOLINE(portable_to_interpreter_bridge_, PortableToInterpreterBridge);
DO_TRAMPOLINE(quick_resolution_trampoline_, QuickResolutionTrampoline);
DO_TRAMPOLINE(quick_to_interpreter_bridge_, QuickToInterpreterBridge);
#undef DO_TRAMPOLINE
} else {
oat_header_->SetInterpreterToInterpreterBridgeOffset(0);
oat_header_->SetInterpreterToCompiledCodeBridgeOffset(0);
oat_header_->SetJniDlsymLookupOffset(0);
oat_header_->SetPortableResolutionTrampolineOffset(0);
oat_header_->SetPortableToInterpreterBridgeOffset(0);
oat_header_->SetQuickResolutionTrampolineOffset(0);
oat_header_->SetQuickToInterpreterBridgeOffset(0);
}
return offset;
}
size_t OatWriter::InitOatCodeDexFiles(size_t offset) {
size_t oat_class_index = 0;
for (size_t i = 0; i != dex_files_->size(); ++i) {
const DexFile* dex_file = (*dex_files_)[i];
CHECK(dex_file != NULL);
offset = InitOatCodeDexFile(offset, oat_class_index, *dex_file);
}
return offset;
}
size_t OatWriter::InitOatCodeDexFile(size_t offset,
size_t& oat_class_index,
const DexFile& dex_file) {
for (size_t class_def_index = 0;
class_def_index < dex_file.NumClassDefs();
class_def_index++, oat_class_index++) {
const DexFile::ClassDef& class_def = dex_file.GetClassDef(class_def_index);
offset = InitOatCodeClassDef(offset, oat_class_index, class_def_index, dex_file, class_def);
oat_classes_[oat_class_index]->UpdateChecksum(*oat_header_);
}
return offset;
}
size_t OatWriter::InitOatCodeClassDef(size_t offset,
size_t oat_class_index, size_t class_def_index,
const DexFile& dex_file,
const DexFile::ClassDef& class_def) {
const byte* class_data = dex_file.GetClassData(class_def);
if (class_data == NULL) {
// empty class, such as a marker interface
return offset;
}
ClassDataItemIterator it(dex_file, class_data);
CHECK_EQ(oat_classes_[oat_class_index]->method_offsets_.size(),
it.NumDirectMethods() + it.NumVirtualMethods());
// Skip fields
while (it.HasNextStaticField()) {
it.Next();
}
while (it.HasNextInstanceField()) {
it.Next();
}
// Process methods
size_t class_def_method_index = 0;
while (it.HasNextDirectMethod()) {
bool is_native = (it.GetMemberAccessFlags() & kAccNative) != 0;
offset = InitOatCodeMethod(offset, oat_class_index, class_def_index, class_def_method_index,
is_native, it.GetMethodInvokeType(class_def), it.GetMemberIndex(),
&dex_file);
class_def_method_index++;
it.Next();
}
while (it.HasNextVirtualMethod()) {
bool is_native = (it.GetMemberAccessFlags() & kAccNative) != 0;
offset = InitOatCodeMethod(offset, oat_class_index, class_def_index, class_def_method_index,
is_native, it.GetMethodInvokeType(class_def), it.GetMemberIndex(),
&dex_file);
class_def_method_index++;
it.Next();
}
DCHECK(!it.HasNext());
return offset;
}
size_t OatWriter::InitOatCodeMethod(size_t offset, size_t oat_class_index,
size_t __attribute__((unused)) class_def_index,
size_t class_def_method_index,
bool __attribute__((unused)) is_native,
InvokeType invoke_type,
uint32_t method_idx, const DexFile* dex_file) {
// derived from CompiledMethod if available
uint32_t code_offset = 0;
uint32_t frame_size_in_bytes = kStackAlignment;
uint32_t core_spill_mask = 0;
uint32_t fp_spill_mask = 0;
uint32_t mapping_table_offset = 0;
uint32_t vmap_table_offset = 0;
uint32_t gc_map_offset = 0;
OatClass* oat_class = oat_classes_[oat_class_index];
#if defined(ART_USE_PORTABLE_COMPILER)
size_t oat_method_offsets_offset =
oat_class->GetOatMethodOffsetsOffsetFromOatHeader(class_def_method_index);
#endif
CompiledMethod* compiled_method =
compiler_driver_->GetCompiledMethod(MethodReference(dex_file, method_idx));
if (compiled_method != NULL) {
#if defined(ART_USE_PORTABLE_COMPILER)
compiled_method->AddOatdataOffsetToCompliledCodeOffset(
oat_method_offsets_offset + OFFSETOF_MEMBER(OatMethodOffsets, code_offset_));
#else
const std::vector<uint8_t>& code = compiled_method->GetCode();
offset = compiled_method->AlignCode(offset);
DCHECK_ALIGNED(offset, kArmAlignment);
uint32_t code_size = code.size() * sizeof(code[0]);
CHECK_NE(code_size, 0U);
uint32_t thumb_offset = compiled_method->CodeDelta();
code_offset = offset + sizeof(code_size) + thumb_offset;
// Deduplicate code arrays
SafeMap<const std::vector<uint8_t>*, uint32_t>::iterator code_iter = code_offsets_.find(&code);
if (code_iter != code_offsets_.end()) {
code_offset = code_iter->second;
} else {
code_offsets_.Put(&code, code_offset);
offset += sizeof(code_size); // code size is prepended before code
offset += code_size;
oat_header_->UpdateChecksum(&code[0], code_size);
}
#endif
frame_size_in_bytes = compiled_method->GetFrameSizeInBytes();
core_spill_mask = compiled_method->GetCoreSpillMask();
fp_spill_mask = compiled_method->GetFpSpillMask();
const std::vector<uint8_t>& mapping_table = compiled_method->GetMappingTable();
size_t mapping_table_size = mapping_table.size() * sizeof(mapping_table[0]);
mapping_table_offset = (mapping_table_size == 0) ? 0 : offset;
// Deduplicate mapping tables
SafeMap<const std::vector<uint8_t>*, uint32_t>::iterator mapping_iter =
mapping_table_offsets_.find(&mapping_table);
if (mapping_iter != mapping_table_offsets_.end()) {
mapping_table_offset = mapping_iter->second;
} else {
mapping_table_offsets_.Put(&mapping_table, mapping_table_offset);
offset += mapping_table_size;
oat_header_->UpdateChecksum(&mapping_table[0], mapping_table_size);
}
const std::vector<uint8_t>& vmap_table = compiled_method->GetVmapTable();
size_t vmap_table_size = vmap_table.size() * sizeof(vmap_table[0]);
vmap_table_offset = (vmap_table_size == 0) ? 0 : offset;
// Deduplicate vmap tables
SafeMap<const std::vector<uint8_t>*, uint32_t>::iterator vmap_iter =
vmap_table_offsets_.find(&vmap_table);
if (vmap_iter != vmap_table_offsets_.end()) {
vmap_table_offset = vmap_iter->second;
} else {
vmap_table_offsets_.Put(&vmap_table, vmap_table_offset);
offset += vmap_table_size;
oat_header_->UpdateChecksum(&vmap_table[0], vmap_table_size);
}
const std::vector<uint8_t>& gc_map = compiled_method->GetGcMap();
size_t gc_map_size = gc_map.size() * sizeof(gc_map[0]);
gc_map_offset = (gc_map_size == 0) ? 0 : offset;
#if !defined(NDEBUG)
// We expect GC maps except when the class hasn't been verified or the method is native
ClassReference class_ref(dex_file, class_def_index);
CompiledClass* compiled_class = compiler_driver_->GetCompiledClass(class_ref);
mirror::Class::Status status;
if (compiled_class != NULL) {
status = compiled_class->GetStatus();
} else if (verifier::MethodVerifier::IsClassRejected(class_ref)) {
status = mirror::Class::kStatusError;
} else {
status = mirror::Class::kStatusNotReady;
}
CHECK(gc_map_size != 0 || is_native || status < mirror::Class::kStatusVerified)
<< &gc_map << " " << gc_map_size << " " << (is_native ? "true" : "false") << " "
<< (status < mirror::Class::kStatusVerified) << " " << status << " "
<< PrettyMethod(method_idx, *dex_file);
#endif
// Deduplicate GC maps
SafeMap<const std::vector<uint8_t>*, uint32_t>::iterator gc_map_iter =
gc_map_offsets_.find(&gc_map);
if (gc_map_iter != gc_map_offsets_.end()) {
gc_map_offset = gc_map_iter->second;
} else {
gc_map_offsets_.Put(&gc_map, gc_map_offset);
offset += gc_map_size;
oat_header_->UpdateChecksum(&gc_map[0], gc_map_size);
}
}
oat_class->method_offsets_[class_def_method_index] =
OatMethodOffsets(code_offset,
frame_size_in_bytes,
core_spill_mask,
fp_spill_mask,
mapping_table_offset,
vmap_table_offset,
gc_map_offset);
if (compiler_driver_->IsImage()) {
ClassLinker* linker = Runtime::Current()->GetClassLinker();
mirror::DexCache* dex_cache = linker->FindDexCache(*dex_file);
// Unchecked as we hold mutator_lock_ on entry.
ScopedObjectAccessUnchecked soa(Thread::Current());
mirror::ArtMethod* method = linker->ResolveMethod(*dex_file, method_idx, dex_cache,
NULL, NULL, invoke_type);
CHECK(method != NULL);
method->SetFrameSizeInBytes(frame_size_in_bytes);
method->SetCoreSpillMask(core_spill_mask);
method->SetFpSpillMask(fp_spill_mask);
method->SetOatMappingTableOffset(mapping_table_offset);
// Don't overwrite static method trampoline
if (!method->IsStatic() || method->IsConstructor() ||
method->GetDeclaringClass()->IsInitialized()) {
method->SetOatCodeOffset(code_offset);
} else {
method->SetEntryPointFromCompiledCode(NULL);
}
method->SetOatVmapTableOffset(vmap_table_offset);
method->SetOatNativeGcMapOffset(gc_map_offset);
}
return offset;
}
#define DCHECK_OFFSET() \
DCHECK_EQ(static_cast<off_t>(file_offset + relative_offset), out.Seek(0, kSeekCurrent)) \
<< "file_offset=" << file_offset << " relative_offset=" << relative_offset
#define DCHECK_OFFSET_() \
DCHECK_EQ(static_cast<off_t>(file_offset + offset_), out.Seek(0, kSeekCurrent)) \
<< "file_offset=" << file_offset << " offset_=" << offset_
bool OatWriter::Write(OutputStream& out) {
const size_t file_offset = out.Seek(0, kSeekCurrent);
if (!out.WriteFully(oat_header_, sizeof(*oat_header_))) {
PLOG(ERROR) << "Failed to write oat header to " << out.GetLocation();
return false;
}
size_oat_header_ += sizeof(*oat_header_);
if (!out.WriteFully(image_file_location_.data(), image_file_location_.size())) {
PLOG(ERROR) << "Failed to write oat header image file location to " << out.GetLocation();
return false;
}
size_oat_header_image_file_location_ += image_file_location_.size();
if (!WriteTables(out, file_offset)) {
LOG(ERROR) << "Failed to write oat tables to " << out.GetLocation();
return false;
}
size_t relative_offset = WriteCode(out, file_offset);
if (relative_offset == 0) {
LOG(ERROR) << "Failed to write oat code to " << out.GetLocation();
return false;
}
relative_offset = WriteCodeDexFiles(out, file_offset, relative_offset);
if (relative_offset == 0) {
LOG(ERROR) << "Failed to write oat code for dex files to " << out.GetLocation();
return false;
}
if (kIsDebugBuild) {
uint32_t size_total = 0;
#define DO_STAT(x) \
VLOG(compiler) << #x "=" << PrettySize(x) << " (" << x << "B)"; \
size_total += x;
DO_STAT(size_dex_file_alignment_);
DO_STAT(size_executable_offset_alignment_);
DO_STAT(size_oat_header_);
DO_STAT(size_oat_header_image_file_location_);
DO_STAT(size_dex_file_);
DO_STAT(size_interpreter_to_interpreter_bridge_);
DO_STAT(size_interpreter_to_compiled_code_bridge_);
DO_STAT(size_jni_dlsym_lookup_);
DO_STAT(size_portable_resolution_trampoline_);
DO_STAT(size_portable_to_interpreter_bridge_);
DO_STAT(size_quick_resolution_trampoline_);
DO_STAT(size_quick_to_interpreter_bridge_);
DO_STAT(size_trampoline_alignment_);
DO_STAT(size_code_size_);
DO_STAT(size_code_);
DO_STAT(size_code_alignment_);
DO_STAT(size_mapping_table_);
DO_STAT(size_vmap_table_);
DO_STAT(size_gc_map_);
DO_STAT(size_oat_dex_file_location_size_);
DO_STAT(size_oat_dex_file_location_data_);
DO_STAT(size_oat_dex_file_location_checksum_);
DO_STAT(size_oat_dex_file_offset_);
DO_STAT(size_oat_dex_file_methods_offsets_);
DO_STAT(size_oat_class_status_);
DO_STAT(size_oat_class_method_offsets_);
#undef DO_STAT
VLOG(compiler) << "size_total=" << PrettySize(size_total) << " (" << size_total << "B)"; \
CHECK_EQ(file_offset + size_total, static_cast<uint32_t>(out.Seek(0, kSeekCurrent)));
CHECK_EQ(size_, size_total);
}
CHECK_EQ(file_offset + size_, static_cast<uint32_t>(out.Seek(0, kSeekCurrent)));
CHECK_EQ(size_, relative_offset);
return true;
}
bool OatWriter::WriteTables(OutputStream& out, const size_t file_offset) {
for (size_t i = 0; i != oat_dex_files_.size(); ++i) {
if (!oat_dex_files_[i]->Write(this, out, file_offset)) {
PLOG(ERROR) << "Failed to write oat dex information to " << out.GetLocation();
return false;
}
}
for (size_t i = 0; i != oat_dex_files_.size(); ++i) {
uint32_t expected_offset = file_offset + oat_dex_files_[i]->dex_file_offset_;
off_t actual_offset = out.Seek(expected_offset, kSeekSet);
if (static_cast<uint32_t>(actual_offset) != expected_offset) {
const DexFile* dex_file = (*dex_files_)[i];
PLOG(ERROR) << "Failed to seek to dex file section. Actual: " << actual_offset
<< " Expected: " << expected_offset << " File: " << dex_file->GetLocation();
return false;
}
const DexFile* dex_file = (*dex_files_)[i];
if (!out.WriteFully(&dex_file->GetHeader(), dex_file->GetHeader().file_size_)) {
PLOG(ERROR) << "Failed to write dex file " << dex_file->GetLocation()
<< " to " << out.GetLocation();
return false;
}
size_dex_file_ += dex_file->GetHeader().file_size_;
}
for (size_t i = 0; i != oat_classes_.size(); ++i) {
if (!oat_classes_[i]->Write(this, out, file_offset)) {
PLOG(ERROR) << "Failed to write oat methods information to " << out.GetLocation();
return false;
}
}
return true;
}
size_t OatWriter::WriteCode(OutputStream& out, const size_t file_offset) {
size_t relative_offset = oat_header_->GetExecutableOffset();
off_t new_offset = out.Seek(size_executable_offset_alignment_, kSeekCurrent);
size_t expected_file_offset = file_offset + relative_offset;
if (static_cast<uint32_t>(new_offset) != expected_file_offset) {
PLOG(ERROR) << "Failed to seek to oat code section. Actual: " << new_offset
<< " Expected: " << expected_file_offset << " File: " << out.GetLocation();
return 0;
}
DCHECK_OFFSET();
if (compiler_driver_->IsImage()) {
InstructionSet instruction_set = compiler_driver_->GetInstructionSet();
#define DO_TRAMPOLINE(field) \
do { \
uint32_t aligned_offset = CompiledCode::AlignCode(relative_offset, instruction_set); \
uint32_t alignment_padding = aligned_offset - relative_offset; \
out.Seek(alignment_padding, kSeekCurrent); \
size_trampoline_alignment_ += alignment_padding; \
if (!out.WriteFully(&(*field)[0], field->size())) { \
PLOG(ERROR) << "Failed to write " # field " to " << out.GetLocation(); \
return false; \
} \
size_ ## field += field->size(); \
relative_offset += alignment_padding + field->size(); \
DCHECK_OFFSET(); \
} while (false)
DO_TRAMPOLINE(interpreter_to_interpreter_bridge_);
DO_TRAMPOLINE(interpreter_to_compiled_code_bridge_);
DO_TRAMPOLINE(jni_dlsym_lookup_);
DO_TRAMPOLINE(portable_resolution_trampoline_);
DO_TRAMPOLINE(portable_to_interpreter_bridge_);
DO_TRAMPOLINE(quick_resolution_trampoline_);
DO_TRAMPOLINE(quick_to_interpreter_bridge_);
#undef DO_TRAMPOLINE
}
return relative_offset;
}
size_t OatWriter::WriteCodeDexFiles(OutputStream& out,
const size_t file_offset,
size_t relative_offset) {
size_t oat_class_index = 0;
for (size_t i = 0; i != oat_dex_files_.size(); ++i) {
const DexFile* dex_file = (*dex_files_)[i];
CHECK(dex_file != NULL);
relative_offset = WriteCodeDexFile(out, file_offset, relative_offset, oat_class_index,
*dex_file);
if (relative_offset == 0) {
return 0;
}
}
return relative_offset;
}
size_t OatWriter::WriteCodeDexFile(OutputStream& out, const size_t file_offset,
size_t relative_offset, size_t& oat_class_index,
const DexFile& dex_file) {
for (size_t class_def_index = 0; class_def_index < dex_file.NumClassDefs();
class_def_index++, oat_class_index++) {
const DexFile::ClassDef& class_def = dex_file.GetClassDef(class_def_index);
relative_offset = WriteCodeClassDef(out, file_offset, relative_offset, oat_class_index,
dex_file, class_def);
if (relative_offset == 0) {
return 0;
}
}
return relative_offset;
}
void OatWriter::ReportWriteFailure(const char* what, uint32_t method_idx,
const DexFile& dex_file, OutputStream& out) const {
PLOG(ERROR) << "Failed to write " << what << " for " << PrettyMethod(method_idx, dex_file)
<< " to " << out.GetLocation();
}
size_t OatWriter::WriteCodeClassDef(OutputStream& out,
const size_t file_offset,
size_t relative_offset,
size_t oat_class_index,
const DexFile& dex_file,
const DexFile::ClassDef& class_def) {
const byte* class_data = dex_file.GetClassData(class_def);
if (class_data == NULL) {
// ie. an empty class such as a marker interface
return relative_offset;
}
ClassDataItemIterator it(dex_file, class_data);
// Skip fields
while (it.HasNextStaticField()) {
it.Next();
}
while (it.HasNextInstanceField()) {
it.Next();
}
// Process methods
size_t class_def_method_index = 0;
while (it.HasNextDirectMethod()) {
bool is_static = (it.GetMemberAccessFlags() & kAccStatic) != 0;
relative_offset = WriteCodeMethod(out, file_offset, relative_offset, oat_class_index,
class_def_method_index, is_static, it.GetMemberIndex(),
dex_file);
if (relative_offset == 0) {
return 0;
}
class_def_method_index++;
it.Next();
}
while (it.HasNextVirtualMethod()) {
relative_offset = WriteCodeMethod(out, file_offset, relative_offset, oat_class_index,
class_def_method_index, false, it.GetMemberIndex(), dex_file);
if (relative_offset == 0) {
return 0;
}
class_def_method_index++;
it.Next();
}
return relative_offset;
}
size_t OatWriter::WriteCodeMethod(OutputStream& out, const size_t file_offset,
size_t relative_offset, size_t oat_class_index,
size_t class_def_method_index, bool is_static,
uint32_t method_idx, const DexFile& dex_file) {
const CompiledMethod* compiled_method =
compiler_driver_->GetCompiledMethod(MethodReference(&dex_file, method_idx));
OatMethodOffsets method_offsets =
oat_classes_[oat_class_index]->method_offsets_[class_def_method_index];
if (compiled_method != NULL) { // ie. not an abstract method
#if !defined(ART_USE_PORTABLE_COMPILER)
uint32_t aligned_offset = compiled_method->AlignCode(relative_offset);
uint32_t aligned_code_delta = aligned_offset - relative_offset;
if (aligned_code_delta != 0) {
off_t new_offset = out.Seek(aligned_code_delta, kSeekCurrent);
size_code_alignment_ += aligned_code_delta;
uint32_t expected_offset = file_offset + aligned_offset;
if (static_cast<uint32_t>(new_offset) != expected_offset) {
PLOG(ERROR) << "Failed to seek to align oat code. Actual: " << new_offset
<< " Expected: " << expected_offset << " File: " << out.GetLocation();
return 0;
}
relative_offset += aligned_code_delta;
DCHECK_OFFSET();
}
DCHECK_ALIGNED(relative_offset, kArmAlignment);
const std::vector<uint8_t>& code = compiled_method->GetCode();
uint32_t code_size = code.size() * sizeof(code[0]);
CHECK_NE(code_size, 0U);
// Deduplicate code arrays
size_t code_offset = relative_offset + sizeof(code_size) + compiled_method->CodeDelta();
SafeMap<const std::vector<uint8_t>*, uint32_t>::iterator code_iter = code_offsets_.find(&code);
if (code_iter != code_offsets_.end() && code_offset != method_offsets.code_offset_) {
DCHECK(code_iter->second == method_offsets.code_offset_)
<< PrettyMethod(method_idx, dex_file);
} else {
DCHECK(code_offset == method_offsets.code_offset_) << PrettyMethod(method_idx, dex_file);
if (!out.WriteFully(&code_size, sizeof(code_size))) {
ReportWriteFailure("method code size", method_idx, dex_file, out);
return 0;
}
size_code_size_ += sizeof(code_size);
relative_offset += sizeof(code_size);
DCHECK_OFFSET();
if (!out.WriteFully(&code[0], code_size)) {
ReportWriteFailure("method code", method_idx, dex_file, out);
return 0;
}
size_code_ += code_size;
relative_offset += code_size;
}
DCHECK_OFFSET();
#endif
const std::vector<uint8_t>& mapping_table = compiled_method->GetMappingTable();
size_t mapping_table_size = mapping_table.size() * sizeof(mapping_table[0]);
// Deduplicate mapping tables
SafeMap<const std::vector<uint8_t>*, uint32_t>::iterator mapping_iter =
mapping_table_offsets_.find(&mapping_table);
if (mapping_iter != mapping_table_offsets_.end() &&
relative_offset != method_offsets.mapping_table_offset_) {
DCHECK((mapping_table_size == 0 && method_offsets.mapping_table_offset_ == 0)
|| mapping_iter->second == method_offsets.mapping_table_offset_)
<< PrettyMethod(method_idx, dex_file);
} else {
DCHECK((mapping_table_size == 0 && method_offsets.mapping_table_offset_ == 0)
|| relative_offset == method_offsets.mapping_table_offset_)
<< PrettyMethod(method_idx, dex_file);
if (!out.WriteFully(&mapping_table[0], mapping_table_size)) {
ReportWriteFailure("mapping table", method_idx, dex_file, out);
return 0;
}
size_mapping_table_ += mapping_table_size;
relative_offset += mapping_table_size;
}
DCHECK_OFFSET();
const std::vector<uint8_t>& vmap_table = compiled_method->GetVmapTable();
size_t vmap_table_size = vmap_table.size() * sizeof(vmap_table[0]);
// Deduplicate vmap tables
SafeMap<const std::vector<uint8_t>*, uint32_t>::iterator vmap_iter =
vmap_table_offsets_.find(&vmap_table);
if (vmap_iter != vmap_table_offsets_.end() &&
relative_offset != method_offsets.vmap_table_offset_) {
DCHECK((vmap_table_size == 0 && method_offsets.vmap_table_offset_ == 0)
|| vmap_iter->second == method_offsets.vmap_table_offset_)
<< PrettyMethod(method_idx, dex_file);
} else {
DCHECK((vmap_table_size == 0 && method_offsets.vmap_table_offset_ == 0)
|| relative_offset == method_offsets.vmap_table_offset_)
<< PrettyMethod(method_idx, dex_file);
if (!out.WriteFully(&vmap_table[0], vmap_table_size)) {
ReportWriteFailure("vmap table", method_idx, dex_file, out);
return 0;
}
size_vmap_table_ += vmap_table_size;
relative_offset += vmap_table_size;
}
DCHECK_OFFSET();
const std::vector<uint8_t>& gc_map = compiled_method->GetGcMap();
size_t gc_map_size = gc_map.size() * sizeof(gc_map[0]);
// Deduplicate GC maps
SafeMap<const std::vector<uint8_t>*, uint32_t>::iterator gc_map_iter =
gc_map_offsets_.find(&gc_map);
if (gc_map_iter != gc_map_offsets_.end() &&
relative_offset != method_offsets.gc_map_offset_) {
DCHECK((gc_map_size == 0 && method_offsets.gc_map_offset_ == 0)
|| gc_map_iter->second == method_offsets.gc_map_offset_)
<< PrettyMethod(method_idx, dex_file);
} else {
DCHECK((gc_map_size == 0 && method_offsets.gc_map_offset_ == 0)
|| relative_offset == method_offsets.gc_map_offset_)
<< PrettyMethod(method_idx, dex_file);
if (!out.WriteFully(&gc_map[0], gc_map_size)) {
ReportWriteFailure("GC map", method_idx, dex_file, out);
return 0;
}
size_gc_map_ += gc_map_size;
relative_offset += gc_map_size;
}
DCHECK_OFFSET();
}
return relative_offset;
}
OatWriter::OatDexFile::OatDexFile(size_t offset, const DexFile& dex_file) {
offset_ = offset;
const std::string& location(dex_file.GetLocation());
dex_file_location_size_ = location.size();
dex_file_location_data_ = reinterpret_cast<const uint8_t*>(location.data());
dex_file_location_checksum_ = dex_file.GetLocationChecksum();
dex_file_offset_ = 0;
methods_offsets_.resize(dex_file.NumClassDefs());
}
size_t OatWriter::OatDexFile::SizeOf() const {
return sizeof(dex_file_location_size_)
+ dex_file_location_size_
+ sizeof(dex_file_location_checksum_)
+ sizeof(dex_file_offset_)
+ (sizeof(methods_offsets_[0]) * methods_offsets_.size());
}
void OatWriter::OatDexFile::UpdateChecksum(OatHeader& oat_header) const {
oat_header.UpdateChecksum(&dex_file_location_size_, sizeof(dex_file_location_size_));
oat_header.UpdateChecksum(dex_file_location_data_, dex_file_location_size_);
oat_header.UpdateChecksum(&dex_file_location_checksum_, sizeof(dex_file_location_checksum_));
oat_header.UpdateChecksum(&dex_file_offset_, sizeof(dex_file_offset_));
oat_header.UpdateChecksum(&methods_offsets_[0],
sizeof(methods_offsets_[0]) * methods_offsets_.size());
}
bool OatWriter::OatDexFile::Write(OatWriter* oat_writer,
OutputStream& out,
const size_t file_offset) const {
DCHECK_OFFSET_();
if (!out.WriteFully(&dex_file_location_size_, sizeof(dex_file_location_size_))) {
PLOG(ERROR) << "Failed to write dex file location length to " << out.GetLocation();
return false;
}
oat_writer->size_oat_dex_file_location_size_ += sizeof(dex_file_location_size_);
if (!out.WriteFully(dex_file_location_data_, dex_file_location_size_)) {
PLOG(ERROR) << "Failed to write dex file location data to " << out.GetLocation();
return false;
}
oat_writer->size_oat_dex_file_location_data_ += dex_file_location_size_;
if (!out.WriteFully(&dex_file_location_checksum_, sizeof(dex_file_location_checksum_))) {
PLOG(ERROR) << "Failed to write dex file location checksum to " << out.GetLocation();
return false;
}
oat_writer->size_oat_dex_file_location_checksum_ += sizeof(dex_file_location_checksum_);
if (!out.WriteFully(&dex_file_offset_, sizeof(dex_file_offset_))) {
PLOG(ERROR) << "Failed to write dex file offset to " << out.GetLocation();
return false;
}
oat_writer->size_oat_dex_file_offset_ += sizeof(dex_file_offset_);
if (!out.WriteFully(&methods_offsets_[0],
sizeof(methods_offsets_[0]) * methods_offsets_.size())) {
PLOG(ERROR) << "Failed to write methods offsets to " << out.GetLocation();
return false;
}
oat_writer->size_oat_dex_file_methods_offsets_ +=
sizeof(methods_offsets_[0]) * methods_offsets_.size();
return true;
}
OatWriter::OatClass::OatClass(size_t offset, mirror::Class::Status status, uint32_t methods_count) {
offset_ = offset;
status_ = status;
method_offsets_.resize(methods_count);
}
size_t OatWriter::OatClass::GetOatMethodOffsetsOffsetFromOatHeader(
size_t class_def_method_index_) const {
return offset_ + GetOatMethodOffsetsOffsetFromOatClass(class_def_method_index_);
}
size_t OatWriter::OatClass::GetOatMethodOffsetsOffsetFromOatClass(
size_t class_def_method_index_) const {
return sizeof(status_)
+ (sizeof(method_offsets_[0]) * class_def_method_index_);
}
size_t OatWriter::OatClass::SizeOf() const {
return GetOatMethodOffsetsOffsetFromOatClass(method_offsets_.size());
}
void OatWriter::OatClass::UpdateChecksum(OatHeader& oat_header) const {
oat_header.UpdateChecksum(&status_, sizeof(status_));
oat_header.UpdateChecksum(&method_offsets_[0],
sizeof(method_offsets_[0]) * method_offsets_.size());
}
bool OatWriter::OatClass::Write(OatWriter* oat_writer,
OutputStream& out,
const size_t file_offset) const {
DCHECK_OFFSET_();
if (!out.WriteFully(&status_, sizeof(status_))) {
PLOG(ERROR) << "Failed to write class status to " << out.GetLocation();
return false;
}
oat_writer->size_oat_class_status_ += sizeof(status_);
DCHECK_EQ(static_cast<off_t>(file_offset + GetOatMethodOffsetsOffsetFromOatHeader(0)),
out.Seek(0, kSeekCurrent));
if (!out.WriteFully(&method_offsets_[0],
sizeof(method_offsets_[0]) * method_offsets_.size())) {
PLOG(ERROR) << "Failed to write method offsets to " << out.GetLocation();
return false;
}
oat_writer->size_oat_class_method_offsets_ += sizeof(method_offsets_[0]) * method_offsets_.size();
DCHECK_EQ(static_cast<off_t>(file_offset +
GetOatMethodOffsetsOffsetFromOatHeader(method_offsets_.size())),
out.Seek(0, kSeekCurrent));
return true;
}
} // namespace art