upload android base code part3
This commit is contained in:
August
parent
71b83c22f1
commit
b9e30e05b1
15122 changed files with 2089659 additions and 0 deletions
49
android/art/patchoat/Android.bp
Normal file
49
android/art/patchoat/Android.bp
Normal file
|
|
@ -0,0 +1,49 @@
|
|||
//
|
||||
// Copyright (C) 2014 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.
|
||||
//
|
||||
|
||||
cc_defaults {
|
||||
name: "patchoat-defaults",
|
||||
host_supported: true,
|
||||
defaults: ["art_defaults"],
|
||||
srcs: ["patchoat.cc"],
|
||||
target: {
|
||||
android: {
|
||||
compile_multilib: "prefer32",
|
||||
},
|
||||
},
|
||||
shared_libs: [
|
||||
"libbase",
|
||||
],
|
||||
}
|
||||
|
||||
art_cc_binary {
|
||||
name: "patchoat",
|
||||
defaults: ["patchoat-defaults"],
|
||||
shared_libs: [
|
||||
"libart",
|
||||
],
|
||||
}
|
||||
|
||||
art_cc_binary {
|
||||
name: "patchoatd",
|
||||
defaults: [
|
||||
"art_debug_defaults",
|
||||
"patchoat-defaults",
|
||||
],
|
||||
shared_libs: [
|
||||
"libartd",
|
||||
],
|
||||
}
|
||||
873
android/art/patchoat/patchoat.cc
Normal file
873
android/art/patchoat/patchoat.cc
Normal file
|
|
@ -0,0 +1,873 @@
|
|||
/*
|
||||
* Copyright (C) 2014 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 "patchoat.h"
|
||||
|
||||
#include <stdio.h>
|
||||
#include <stdlib.h>
|
||||
#include <sys/file.h>
|
||||
#include <sys/stat.h>
|
||||
#include <unistd.h>
|
||||
|
||||
#include <string>
|
||||
#include <vector>
|
||||
|
||||
#include "android-base/stringprintf.h"
|
||||
#include "android-base/strings.h"
|
||||
|
||||
#include "art_field-inl.h"
|
||||
#include "art_method-inl.h"
|
||||
#include "base/dumpable.h"
|
||||
#include "base/memory_tool.h"
|
||||
#include "base/scoped_flock.h"
|
||||
#include "base/stringpiece.h"
|
||||
#include "base/unix_file/fd_file.h"
|
||||
#include "base/unix_file/random_access_file_utils.h"
|
||||
#include "elf_utils.h"
|
||||
#include "elf_file.h"
|
||||
#include "elf_file_impl.h"
|
||||
#include "gc/space/image_space.h"
|
||||
#include "image-inl.h"
|
||||
#include "intern_table.h"
|
||||
#include "mirror/dex_cache.h"
|
||||
#include "mirror/executable.h"
|
||||
#include "mirror/object-inl.h"
|
||||
#include "mirror/object-refvisitor-inl.h"
|
||||
#include "mirror/method.h"
|
||||
#include "mirror/reference.h"
|
||||
#include "noop_compiler_callbacks.h"
|
||||
#include "offsets.h"
|
||||
#include "os.h"
|
||||
#include "runtime.h"
|
||||
#include "scoped_thread_state_change-inl.h"
|
||||
#include "thread.h"
|
||||
#include "utils.h"
|
||||
|
||||
namespace art {
|
||||
|
||||
static const OatHeader* GetOatHeader(const ElfFile* elf_file) {
|
||||
uint64_t off = 0;
|
||||
if (!elf_file->GetSectionOffsetAndSize(".rodata", &off, nullptr)) {
|
||||
return nullptr;
|
||||
}
|
||||
|
||||
OatHeader* oat_header = reinterpret_cast<OatHeader*>(elf_file->Begin() + off);
|
||||
return oat_header;
|
||||
}
|
||||
|
||||
static File* CreateOrOpen(const char* name) {
|
||||
if (OS::FileExists(name)) {
|
||||
return OS::OpenFileReadWrite(name);
|
||||
} else {
|
||||
std::unique_ptr<File> f(OS::CreateEmptyFile(name));
|
||||
if (f.get() != nullptr) {
|
||||
if (fchmod(f->Fd(), 0644) != 0) {
|
||||
PLOG(ERROR) << "Unable to make " << name << " world readable";
|
||||
unlink(name);
|
||||
return nullptr;
|
||||
}
|
||||
}
|
||||
return f.release();
|
||||
}
|
||||
}
|
||||
|
||||
// Either try to close the file (close=true), or erase it.
|
||||
static bool FinishFile(File* file, bool close) {
|
||||
if (close) {
|
||||
if (file->FlushCloseOrErase() != 0) {
|
||||
PLOG(ERROR) << "Failed to flush and close file.";
|
||||
return false;
|
||||
}
|
||||
return true;
|
||||
} else {
|
||||
file->Erase();
|
||||
return false;
|
||||
}
|
||||
}
|
||||
|
||||
static bool SymlinkFile(const std::string& input_filename, const std::string& output_filename) {
|
||||
if (input_filename == output_filename) {
|
||||
// Input and output are the same, nothing to do.
|
||||
return true;
|
||||
}
|
||||
|
||||
// Unlink the original filename, since we are overwriting it.
|
||||
unlink(output_filename.c_str());
|
||||
|
||||
// Create a symlink from the source file to the target path.
|
||||
if (symlink(input_filename.c_str(), output_filename.c_str()) < 0) {
|
||||
PLOG(ERROR) << "Failed to create symlink " << output_filename << " -> " << input_filename;
|
||||
return false;
|
||||
}
|
||||
|
||||
if (kIsDebugBuild) {
|
||||
LOG(INFO) << "Created symlink " << output_filename << " -> " << input_filename;
|
||||
}
|
||||
|
||||
return true;
|
||||
}
|
||||
|
||||
bool PatchOat::Patch(const std::string& image_location,
|
||||
off_t delta,
|
||||
const std::string& output_directory,
|
||||
InstructionSet isa,
|
||||
TimingLogger* timings) {
|
||||
CHECK(Runtime::Current() == nullptr);
|
||||
CHECK(!image_location.empty()) << "image file must have a filename.";
|
||||
|
||||
TimingLogger::ScopedTiming t("Runtime Setup", timings);
|
||||
|
||||
CHECK_NE(isa, kNone);
|
||||
const char* isa_name = GetInstructionSetString(isa);
|
||||
|
||||
// Set up the runtime
|
||||
RuntimeOptions options;
|
||||
NoopCompilerCallbacks callbacks;
|
||||
options.push_back(std::make_pair("compilercallbacks", &callbacks));
|
||||
std::string img = "-Ximage:" + image_location;
|
||||
options.push_back(std::make_pair(img.c_str(), nullptr));
|
||||
options.push_back(std::make_pair("imageinstructionset", reinterpret_cast<const void*>(isa_name)));
|
||||
options.push_back(std::make_pair("-Xno-sig-chain", nullptr));
|
||||
if (!Runtime::Create(options, false)) {
|
||||
LOG(ERROR) << "Unable to initialize runtime";
|
||||
return false;
|
||||
}
|
||||
std::unique_ptr<Runtime> runtime(Runtime::Current());
|
||||
|
||||
// Runtime::Create acquired the mutator_lock_ that is normally given away when we Runtime::Start,
|
||||
// give it away now and then switch to a more manageable ScopedObjectAccess.
|
||||
Thread::Current()->TransitionFromRunnableToSuspended(kNative);
|
||||
ScopedObjectAccess soa(Thread::Current());
|
||||
|
||||
t.NewTiming("Image Patching setup");
|
||||
std::vector<gc::space::ImageSpace*> spaces = Runtime::Current()->GetHeap()->GetBootImageSpaces();
|
||||
std::map<gc::space::ImageSpace*, std::unique_ptr<File>> space_to_file_map;
|
||||
std::map<gc::space::ImageSpace*, std::unique_ptr<MemMap>> space_to_memmap_map;
|
||||
std::map<gc::space::ImageSpace*, PatchOat> space_to_patchoat_map;
|
||||
|
||||
for (size_t i = 0; i < spaces.size(); ++i) {
|
||||
gc::space::ImageSpace* space = spaces[i];
|
||||
std::string input_image_filename = space->GetImageFilename();
|
||||
std::unique_ptr<File> input_image(OS::OpenFileForReading(input_image_filename.c_str()));
|
||||
if (input_image.get() == nullptr) {
|
||||
LOG(ERROR) << "Unable to open input image file at " << input_image_filename;
|
||||
return false;
|
||||
}
|
||||
|
||||
int64_t image_len = input_image->GetLength();
|
||||
if (image_len < 0) {
|
||||
LOG(ERROR) << "Error while getting image length";
|
||||
return false;
|
||||
}
|
||||
ImageHeader image_header;
|
||||
if (sizeof(image_header) != input_image->Read(reinterpret_cast<char*>(&image_header),
|
||||
sizeof(image_header), 0)) {
|
||||
LOG(ERROR) << "Unable to read image header from image file " << input_image->GetPath();
|
||||
}
|
||||
|
||||
/*bool is_image_pic = */IsImagePic(image_header, input_image->GetPath());
|
||||
// Nothing special to do right now since the image always needs to get patched.
|
||||
// Perhaps in some far-off future we may have images with relative addresses that are true-PIC.
|
||||
|
||||
// Create the map where we will write the image patches to.
|
||||
std::string error_msg;
|
||||
std::unique_ptr<MemMap> image(MemMap::MapFile(image_len,
|
||||
PROT_READ | PROT_WRITE,
|
||||
MAP_PRIVATE,
|
||||
input_image->Fd(),
|
||||
0,
|
||||
/*low_4gb*/false,
|
||||
input_image->GetPath().c_str(),
|
||||
&error_msg));
|
||||
if (image.get() == nullptr) {
|
||||
LOG(ERROR) << "Unable to map image file " << input_image->GetPath() << " : " << error_msg;
|
||||
return false;
|
||||
}
|
||||
space_to_file_map.emplace(space, std::move(input_image));
|
||||
space_to_memmap_map.emplace(space, std::move(image));
|
||||
}
|
||||
|
||||
// Symlink PIC oat and vdex files and patch the image spaces in memory.
|
||||
for (size_t i = 0; i < spaces.size(); ++i) {
|
||||
gc::space::ImageSpace* space = spaces[i];
|
||||
std::string input_image_filename = space->GetImageFilename();
|
||||
std::string input_vdex_filename =
|
||||
ImageHeader::GetVdexLocationFromImageLocation(input_image_filename);
|
||||
std::string input_oat_filename =
|
||||
ImageHeader::GetOatLocationFromImageLocation(input_image_filename);
|
||||
std::unique_ptr<File> input_oat_file(OS::OpenFileForReading(input_oat_filename.c_str()));
|
||||
if (input_oat_file.get() == nullptr) {
|
||||
LOG(ERROR) << "Unable to open input oat file at " << input_oat_filename;
|
||||
return false;
|
||||
}
|
||||
std::string error_msg;
|
||||
std::unique_ptr<ElfFile> elf(ElfFile::Open(input_oat_file.get(),
|
||||
PROT_READ | PROT_WRITE, MAP_PRIVATE, &error_msg));
|
||||
if (elf.get() == nullptr) {
|
||||
LOG(ERROR) << "Unable to open oat file " << input_oat_file->GetPath() << " : " << error_msg;
|
||||
return false;
|
||||
}
|
||||
|
||||
MaybePic is_oat_pic = IsOatPic(elf.get());
|
||||
if (is_oat_pic >= ERROR_FIRST) {
|
||||
// Error logged by IsOatPic
|
||||
return false;
|
||||
} else if (is_oat_pic == NOT_PIC) {
|
||||
LOG(ERROR) << "patchoat cannot be used on non-PIC oat file: " << input_oat_file->GetPath();
|
||||
return false;
|
||||
} else {
|
||||
CHECK(is_oat_pic == PIC);
|
||||
|
||||
// Create a symlink.
|
||||
std::string converted_image_filename = space->GetImageLocation();
|
||||
std::replace(converted_image_filename.begin() + 1, converted_image_filename.end(), '/', '@');
|
||||
std::string output_image_filename = output_directory +
|
||||
(android::base::StartsWith(converted_image_filename, "/") ? "" : "/") +
|
||||
converted_image_filename;
|
||||
std::string output_vdex_filename =
|
||||
ImageHeader::GetVdexLocationFromImageLocation(output_image_filename);
|
||||
std::string output_oat_filename =
|
||||
ImageHeader::GetOatLocationFromImageLocation(output_image_filename);
|
||||
|
||||
if (!ReplaceOatFileWithSymlink(input_oat_file->GetPath(),
|
||||
output_oat_filename) ||
|
||||
!SymlinkFile(input_vdex_filename, output_vdex_filename)) {
|
||||
// Errors already logged by above call.
|
||||
return false;
|
||||
}
|
||||
}
|
||||
|
||||
PatchOat& p = space_to_patchoat_map.emplace(space,
|
||||
PatchOat(
|
||||
isa,
|
||||
space_to_memmap_map.find(space)->second.get(),
|
||||
space->GetLiveBitmap(),
|
||||
space->GetMemMap(),
|
||||
delta,
|
||||
&space_to_memmap_map,
|
||||
timings)).first->second;
|
||||
|
||||
t.NewTiming("Patching image");
|
||||
if (!p.PatchImage(i == 0)) {
|
||||
LOG(ERROR) << "Failed to patch image file " << input_image_filename;
|
||||
return false;
|
||||
}
|
||||
}
|
||||
|
||||
// Write the patched image spaces.
|
||||
for (size_t i = 0; i < spaces.size(); ++i) {
|
||||
gc::space::ImageSpace* space = spaces[i];
|
||||
|
||||
t.NewTiming("Writing image");
|
||||
std::string converted_image_filename = space->GetImageLocation();
|
||||
std::replace(converted_image_filename.begin() + 1, converted_image_filename.end(), '/', '@');
|
||||
std::string output_image_filename = output_directory +
|
||||
(android::base::StartsWith(converted_image_filename, "/") ? "" : "/") +
|
||||
converted_image_filename;
|
||||
std::unique_ptr<File> output_image_file(CreateOrOpen(output_image_filename.c_str()));
|
||||
if (output_image_file.get() == nullptr) {
|
||||
LOG(ERROR) << "Failed to open output image file at " << output_image_filename;
|
||||
return false;
|
||||
}
|
||||
|
||||
PatchOat& p = space_to_patchoat_map.find(space)->second;
|
||||
|
||||
bool success = p.WriteImage(output_image_file.get());
|
||||
success = FinishFile(output_image_file.get(), success);
|
||||
if (!success) {
|
||||
return false;
|
||||
}
|
||||
}
|
||||
|
||||
if (!kIsDebugBuild && !(RUNNING_ON_MEMORY_TOOL && kMemoryToolDetectsLeaks)) {
|
||||
// We want to just exit on non-debug builds, not bringing the runtime down
|
||||
// in an orderly fashion. So release the following fields.
|
||||
runtime.release();
|
||||
}
|
||||
|
||||
return true;
|
||||
}
|
||||
|
||||
bool PatchOat::WriteImage(File* out) {
|
||||
TimingLogger::ScopedTiming t("Writing image File", timings_);
|
||||
std::string error_msg;
|
||||
|
||||
// No error checking here, this is best effort. The locking may or may not
|
||||
// succeed and we don't really care either way.
|
||||
ScopedFlock img_flock = LockedFile::DupOf(out->Fd(), out->GetPath(),
|
||||
true /* read_only_mode */, &error_msg);
|
||||
|
||||
CHECK(image_ != nullptr);
|
||||
CHECK(out != nullptr);
|
||||
size_t expect = image_->Size();
|
||||
if (out->WriteFully(reinterpret_cast<char*>(image_->Begin()), expect) &&
|
||||
out->SetLength(expect) == 0) {
|
||||
return true;
|
||||
} else {
|
||||
LOG(ERROR) << "Writing to image file " << out->GetPath() << " failed.";
|
||||
return false;
|
||||
}
|
||||
}
|
||||
|
||||
bool PatchOat::IsImagePic(const ImageHeader& image_header, const std::string& image_path) {
|
||||
if (!image_header.CompilePic()) {
|
||||
if (kIsDebugBuild) {
|
||||
LOG(INFO) << "image at location " << image_path << " was *not* compiled pic";
|
||||
}
|
||||
return false;
|
||||
}
|
||||
|
||||
if (kIsDebugBuild) {
|
||||
LOG(INFO) << "image at location " << image_path << " was compiled PIC";
|
||||
}
|
||||
|
||||
return true;
|
||||
}
|
||||
|
||||
PatchOat::MaybePic PatchOat::IsOatPic(const ElfFile* oat_in) {
|
||||
if (oat_in == nullptr) {
|
||||
LOG(ERROR) << "No ELF input oat fie available";
|
||||
return ERROR_OAT_FILE;
|
||||
}
|
||||
|
||||
const std::string& file_path = oat_in->GetFilePath();
|
||||
|
||||
const OatHeader* oat_header = GetOatHeader(oat_in);
|
||||
if (oat_header == nullptr) {
|
||||
LOG(ERROR) << "Failed to find oat header in oat file " << file_path;
|
||||
return ERROR_OAT_FILE;
|
||||
}
|
||||
|
||||
if (!oat_header->IsValid()) {
|
||||
LOG(ERROR) << "Elf file " << file_path << " has an invalid oat header";
|
||||
return ERROR_OAT_FILE;
|
||||
}
|
||||
|
||||
bool is_pic = oat_header->IsPic();
|
||||
if (kIsDebugBuild) {
|
||||
LOG(INFO) << "Oat file at " << file_path << " is " << (is_pic ? "PIC" : "not pic");
|
||||
}
|
||||
|
||||
return is_pic ? PIC : NOT_PIC;
|
||||
}
|
||||
|
||||
bool PatchOat::ReplaceOatFileWithSymlink(const std::string& input_oat_filename,
|
||||
const std::string& output_oat_filename) {
|
||||
// Delete the original file, since we won't need it.
|
||||
unlink(output_oat_filename.c_str());
|
||||
|
||||
// Create a symlink from the old oat to the new oat
|
||||
if (symlink(input_oat_filename.c_str(), output_oat_filename.c_str()) < 0) {
|
||||
int err = errno;
|
||||
LOG(ERROR) << "Failed to create symlink at " << output_oat_filename
|
||||
<< " error(" << err << "): " << strerror(err);
|
||||
return false;
|
||||
}
|
||||
|
||||
if (kIsDebugBuild) {
|
||||
LOG(INFO) << "Created symlink " << output_oat_filename << " -> " << input_oat_filename;
|
||||
}
|
||||
|
||||
return true;
|
||||
}
|
||||
|
||||
class PatchOat::PatchOatArtFieldVisitor : public ArtFieldVisitor {
|
||||
public:
|
||||
explicit PatchOatArtFieldVisitor(PatchOat* patch_oat) : patch_oat_(patch_oat) {}
|
||||
|
||||
void Visit(ArtField* field) OVERRIDE REQUIRES_SHARED(Locks::mutator_lock_) {
|
||||
ArtField* const dest = patch_oat_->RelocatedCopyOf(field);
|
||||
dest->SetDeclaringClass(
|
||||
patch_oat_->RelocatedAddressOfPointer(field->GetDeclaringClass().Ptr()));
|
||||
}
|
||||
|
||||
private:
|
||||
PatchOat* const patch_oat_;
|
||||
};
|
||||
|
||||
void PatchOat::PatchArtFields(const ImageHeader* image_header) {
|
||||
PatchOatArtFieldVisitor visitor(this);
|
||||
image_header->VisitPackedArtFields(&visitor, heap_->Begin());
|
||||
}
|
||||
|
||||
class PatchOat::PatchOatArtMethodVisitor : public ArtMethodVisitor {
|
||||
public:
|
||||
explicit PatchOatArtMethodVisitor(PatchOat* patch_oat) : patch_oat_(patch_oat) {}
|
||||
|
||||
void Visit(ArtMethod* method) OVERRIDE REQUIRES_SHARED(Locks::mutator_lock_) {
|
||||
ArtMethod* const dest = patch_oat_->RelocatedCopyOf(method);
|
||||
patch_oat_->FixupMethod(method, dest);
|
||||
}
|
||||
|
||||
private:
|
||||
PatchOat* const patch_oat_;
|
||||
};
|
||||
|
||||
void PatchOat::PatchArtMethods(const ImageHeader* image_header) {
|
||||
const PointerSize pointer_size = InstructionSetPointerSize(isa_);
|
||||
PatchOatArtMethodVisitor visitor(this);
|
||||
image_header->VisitPackedArtMethods(&visitor, heap_->Begin(), pointer_size);
|
||||
}
|
||||
|
||||
void PatchOat::PatchImTables(const ImageHeader* image_header) {
|
||||
const PointerSize pointer_size = InstructionSetPointerSize(isa_);
|
||||
// We can safely walk target image since the conflict tables are independent.
|
||||
image_header->VisitPackedImTables(
|
||||
[this](ArtMethod* method) {
|
||||
return RelocatedAddressOfPointer(method);
|
||||
},
|
||||
image_->Begin(),
|
||||
pointer_size);
|
||||
}
|
||||
|
||||
void PatchOat::PatchImtConflictTables(const ImageHeader* image_header) {
|
||||
const PointerSize pointer_size = InstructionSetPointerSize(isa_);
|
||||
// We can safely walk target image since the conflict tables are independent.
|
||||
image_header->VisitPackedImtConflictTables(
|
||||
[this](ArtMethod* method) {
|
||||
return RelocatedAddressOfPointer(method);
|
||||
},
|
||||
image_->Begin(),
|
||||
pointer_size);
|
||||
}
|
||||
|
||||
class PatchOat::FixupRootVisitor : public RootVisitor {
|
||||
public:
|
||||
explicit FixupRootVisitor(const PatchOat* patch_oat) : patch_oat_(patch_oat) {
|
||||
}
|
||||
|
||||
void VisitRoots(mirror::Object*** roots, size_t count, const RootInfo& info ATTRIBUTE_UNUSED)
|
||||
OVERRIDE REQUIRES_SHARED(Locks::mutator_lock_) {
|
||||
for (size_t i = 0; i < count; ++i) {
|
||||
*roots[i] = patch_oat_->RelocatedAddressOfPointer(*roots[i]);
|
||||
}
|
||||
}
|
||||
|
||||
void VisitRoots(mirror::CompressedReference<mirror::Object>** roots, size_t count,
|
||||
const RootInfo& info ATTRIBUTE_UNUSED)
|
||||
OVERRIDE REQUIRES_SHARED(Locks::mutator_lock_) {
|
||||
for (size_t i = 0; i < count; ++i) {
|
||||
roots[i]->Assign(patch_oat_->RelocatedAddressOfPointer(roots[i]->AsMirrorPtr()));
|
||||
}
|
||||
}
|
||||
|
||||
private:
|
||||
const PatchOat* const patch_oat_;
|
||||
};
|
||||
|
||||
void PatchOat::PatchInternedStrings(const ImageHeader* image_header) {
|
||||
const auto& section = image_header->GetImageSection(ImageHeader::kSectionInternedStrings);
|
||||
InternTable temp_table;
|
||||
// Note that we require that ReadFromMemory does not make an internal copy of the elements.
|
||||
// This also relies on visit roots not doing any verification which could fail after we update
|
||||
// the roots to be the image addresses.
|
||||
temp_table.AddTableFromMemory(image_->Begin() + section.Offset());
|
||||
FixupRootVisitor visitor(this);
|
||||
temp_table.VisitRoots(&visitor, kVisitRootFlagAllRoots);
|
||||
}
|
||||
|
||||
void PatchOat::PatchClassTable(const ImageHeader* image_header) {
|
||||
const auto& section = image_header->GetImageSection(ImageHeader::kSectionClassTable);
|
||||
if (section.Size() == 0) {
|
||||
return;
|
||||
}
|
||||
// Note that we require that ReadFromMemory does not make an internal copy of the elements.
|
||||
// This also relies on visit roots not doing any verification which could fail after we update
|
||||
// the roots to be the image addresses.
|
||||
WriterMutexLock mu(Thread::Current(), *Locks::classlinker_classes_lock_);
|
||||
ClassTable temp_table;
|
||||
temp_table.ReadFromMemory(image_->Begin() + section.Offset());
|
||||
FixupRootVisitor visitor(this);
|
||||
temp_table.VisitRoots(UnbufferedRootVisitor(&visitor, RootInfo(kRootUnknown)));
|
||||
}
|
||||
|
||||
|
||||
class PatchOat::RelocatedPointerVisitor {
|
||||
public:
|
||||
explicit RelocatedPointerVisitor(PatchOat* patch_oat) : patch_oat_(patch_oat) {}
|
||||
|
||||
template <typename T>
|
||||
T* operator()(T* ptr, void** dest_addr ATTRIBUTE_UNUSED = 0) const {
|
||||
return patch_oat_->RelocatedAddressOfPointer(ptr);
|
||||
}
|
||||
|
||||
private:
|
||||
PatchOat* const patch_oat_;
|
||||
};
|
||||
|
||||
void PatchOat::PatchDexFileArrays(mirror::ObjectArray<mirror::Object>* img_roots) {
|
||||
auto* dex_caches = down_cast<mirror::ObjectArray<mirror::DexCache>*>(
|
||||
img_roots->Get(ImageHeader::kDexCaches));
|
||||
const PointerSize pointer_size = InstructionSetPointerSize(isa_);
|
||||
for (size_t i = 0, count = dex_caches->GetLength(); i < count; ++i) {
|
||||
auto* orig_dex_cache = dex_caches->GetWithoutChecks(i);
|
||||
auto* copy_dex_cache = RelocatedCopyOf(orig_dex_cache);
|
||||
// Though the DexCache array fields are usually treated as native pointers, we set the full
|
||||
// 64-bit values here, clearing the top 32 bits for 32-bit targets. The zero-extension is
|
||||
// done by casting to the unsigned type uintptr_t before casting to int64_t, i.e.
|
||||
// static_cast<int64_t>(reinterpret_cast<uintptr_t>(image_begin_ + offset))).
|
||||
mirror::StringDexCacheType* orig_strings = orig_dex_cache->GetStrings();
|
||||
mirror::StringDexCacheType* relocated_strings = RelocatedAddressOfPointer(orig_strings);
|
||||
copy_dex_cache->SetField64<false>(
|
||||
mirror::DexCache::StringsOffset(),
|
||||
static_cast<int64_t>(reinterpret_cast<uintptr_t>(relocated_strings)));
|
||||
if (orig_strings != nullptr) {
|
||||
orig_dex_cache->FixupStrings(RelocatedCopyOf(orig_strings), RelocatedPointerVisitor(this));
|
||||
}
|
||||
mirror::TypeDexCacheType* orig_types = orig_dex_cache->GetResolvedTypes();
|
||||
mirror::TypeDexCacheType* relocated_types = RelocatedAddressOfPointer(orig_types);
|
||||
copy_dex_cache->SetField64<false>(
|
||||
mirror::DexCache::ResolvedTypesOffset(),
|
||||
static_cast<int64_t>(reinterpret_cast<uintptr_t>(relocated_types)));
|
||||
if (orig_types != nullptr) {
|
||||
orig_dex_cache->FixupResolvedTypes(RelocatedCopyOf(orig_types),
|
||||
RelocatedPointerVisitor(this));
|
||||
}
|
||||
mirror::MethodDexCacheType* orig_methods = orig_dex_cache->GetResolvedMethods();
|
||||
mirror::MethodDexCacheType* relocated_methods = RelocatedAddressOfPointer(orig_methods);
|
||||
copy_dex_cache->SetField64<false>(
|
||||
mirror::DexCache::ResolvedMethodsOffset(),
|
||||
static_cast<int64_t>(reinterpret_cast<uintptr_t>(relocated_methods)));
|
||||
if (orig_methods != nullptr) {
|
||||
mirror::MethodDexCacheType* copy_methods = RelocatedCopyOf(orig_methods);
|
||||
for (size_t j = 0, num = orig_dex_cache->NumResolvedMethods(); j != num; ++j) {
|
||||
mirror::MethodDexCachePair orig =
|
||||
mirror::DexCache::GetNativePairPtrSize(orig_methods, j, pointer_size);
|
||||
mirror::MethodDexCachePair copy(RelocatedAddressOfPointer(orig.object), orig.index);
|
||||
mirror::DexCache::SetNativePairPtrSize(copy_methods, j, copy, pointer_size);
|
||||
}
|
||||
}
|
||||
mirror::FieldDexCacheType* orig_fields = orig_dex_cache->GetResolvedFields();
|
||||
mirror::FieldDexCacheType* relocated_fields = RelocatedAddressOfPointer(orig_fields);
|
||||
copy_dex_cache->SetField64<false>(
|
||||
mirror::DexCache::ResolvedFieldsOffset(),
|
||||
static_cast<int64_t>(reinterpret_cast<uintptr_t>(relocated_fields)));
|
||||
if (orig_fields != nullptr) {
|
||||
mirror::FieldDexCacheType* copy_fields = RelocatedCopyOf(orig_fields);
|
||||
for (size_t j = 0, num = orig_dex_cache->NumResolvedFields(); j != num; ++j) {
|
||||
mirror::FieldDexCachePair orig =
|
||||
mirror::DexCache::GetNativePairPtrSize(orig_fields, j, pointer_size);
|
||||
mirror::FieldDexCachePair copy(RelocatedAddressOfPointer(orig.object), orig.index);
|
||||
mirror::DexCache::SetNativePairPtrSize(copy_fields, j, copy, pointer_size);
|
||||
}
|
||||
}
|
||||
mirror::MethodTypeDexCacheType* orig_method_types = orig_dex_cache->GetResolvedMethodTypes();
|
||||
mirror::MethodTypeDexCacheType* relocated_method_types =
|
||||
RelocatedAddressOfPointer(orig_method_types);
|
||||
copy_dex_cache->SetField64<false>(
|
||||
mirror::DexCache::ResolvedMethodTypesOffset(),
|
||||
static_cast<int64_t>(reinterpret_cast<uintptr_t>(relocated_method_types)));
|
||||
if (orig_method_types != nullptr) {
|
||||
orig_dex_cache->FixupResolvedMethodTypes(RelocatedCopyOf(orig_method_types),
|
||||
RelocatedPointerVisitor(this));
|
||||
}
|
||||
|
||||
GcRoot<mirror::CallSite>* orig_call_sites = orig_dex_cache->GetResolvedCallSites();
|
||||
GcRoot<mirror::CallSite>* relocated_call_sites = RelocatedAddressOfPointer(orig_call_sites);
|
||||
copy_dex_cache->SetField64<false>(
|
||||
mirror::DexCache::ResolvedCallSitesOffset(),
|
||||
static_cast<int64_t>(reinterpret_cast<uintptr_t>(relocated_call_sites)));
|
||||
if (orig_call_sites != nullptr) {
|
||||
orig_dex_cache->FixupResolvedCallSites(RelocatedCopyOf(orig_call_sites),
|
||||
RelocatedPointerVisitor(this));
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
bool PatchOat::PatchImage(bool primary_image) {
|
||||
ImageHeader* image_header = reinterpret_cast<ImageHeader*>(image_->Begin());
|
||||
CHECK_GT(image_->Size(), sizeof(ImageHeader));
|
||||
// These are the roots from the original file.
|
||||
auto* img_roots = image_header->GetImageRoots();
|
||||
image_header->RelocateImage(delta_);
|
||||
|
||||
PatchArtFields(image_header);
|
||||
PatchArtMethods(image_header);
|
||||
PatchImTables(image_header);
|
||||
PatchImtConflictTables(image_header);
|
||||
PatchInternedStrings(image_header);
|
||||
PatchClassTable(image_header);
|
||||
// Patch dex file int/long arrays which point to ArtFields.
|
||||
PatchDexFileArrays(img_roots);
|
||||
|
||||
if (primary_image) {
|
||||
VisitObject(img_roots);
|
||||
}
|
||||
|
||||
if (!image_header->IsValid()) {
|
||||
LOG(ERROR) << "relocation renders image header invalid";
|
||||
return false;
|
||||
}
|
||||
|
||||
{
|
||||
TimingLogger::ScopedTiming t("Walk Bitmap", timings_);
|
||||
// Walk the bitmap.
|
||||
WriterMutexLock mu(Thread::Current(), *Locks::heap_bitmap_lock_);
|
||||
auto visitor = [&](mirror::Object* obj) REQUIRES_SHARED(Locks::mutator_lock_) {
|
||||
VisitObject(obj);
|
||||
};
|
||||
bitmap_->Walk(visitor);
|
||||
}
|
||||
return true;
|
||||
}
|
||||
|
||||
|
||||
void PatchOat::PatchVisitor::operator() (ObjPtr<mirror::Object> obj,
|
||||
MemberOffset off,
|
||||
bool is_static_unused ATTRIBUTE_UNUSED) const {
|
||||
mirror::Object* referent = obj->GetFieldObject<mirror::Object, kVerifyNone>(off);
|
||||
mirror::Object* moved_object = patcher_->RelocatedAddressOfPointer(referent);
|
||||
copy_->SetFieldObjectWithoutWriteBarrier<false, true, kVerifyNone>(off, moved_object);
|
||||
}
|
||||
|
||||
void PatchOat::PatchVisitor::operator() (ObjPtr<mirror::Class> cls ATTRIBUTE_UNUSED,
|
||||
ObjPtr<mirror::Reference> ref) const {
|
||||
MemberOffset off = mirror::Reference::ReferentOffset();
|
||||
mirror::Object* referent = ref->GetReferent();
|
||||
DCHECK(referent == nullptr ||
|
||||
Runtime::Current()->GetHeap()->ObjectIsInBootImageSpace(referent)) << referent;
|
||||
mirror::Object* moved_object = patcher_->RelocatedAddressOfPointer(referent);
|
||||
copy_->SetFieldObjectWithoutWriteBarrier<false, true, kVerifyNone>(off, moved_object);
|
||||
}
|
||||
|
||||
// Called by PatchImage.
|
||||
void PatchOat::VisitObject(mirror::Object* object) {
|
||||
mirror::Object* copy = RelocatedCopyOf(object);
|
||||
CHECK(copy != nullptr);
|
||||
if (kUseBakerReadBarrier) {
|
||||
object->AssertReadBarrierState();
|
||||
}
|
||||
PatchOat::PatchVisitor visitor(this, copy);
|
||||
object->VisitReferences<kVerifyNone>(visitor, visitor);
|
||||
if (object->IsClass<kVerifyNone>()) {
|
||||
const PointerSize pointer_size = InstructionSetPointerSize(isa_);
|
||||
mirror::Class* klass = object->AsClass();
|
||||
mirror::Class* copy_klass = down_cast<mirror::Class*>(copy);
|
||||
RelocatedPointerVisitor native_visitor(this);
|
||||
klass->FixupNativePointers(copy_klass, pointer_size, native_visitor);
|
||||
auto* vtable = klass->GetVTable();
|
||||
if (vtable != nullptr) {
|
||||
vtable->Fixup(RelocatedCopyOfFollowImages(vtable), pointer_size, native_visitor);
|
||||
}
|
||||
mirror::IfTable* iftable = klass->GetIfTable();
|
||||
for (int32_t i = 0; i < klass->GetIfTableCount(); ++i) {
|
||||
if (iftable->GetMethodArrayCount(i) > 0) {
|
||||
auto* method_array = iftable->GetMethodArray(i);
|
||||
CHECK(method_array != nullptr);
|
||||
method_array->Fixup(RelocatedCopyOfFollowImages(method_array),
|
||||
pointer_size,
|
||||
native_visitor);
|
||||
}
|
||||
}
|
||||
} else if (object->GetClass() == mirror::Method::StaticClass() ||
|
||||
object->GetClass() == mirror::Constructor::StaticClass()) {
|
||||
// Need to go update the ArtMethod.
|
||||
auto* dest = down_cast<mirror::Executable*>(copy);
|
||||
auto* src = down_cast<mirror::Executable*>(object);
|
||||
dest->SetArtMethod(RelocatedAddressOfPointer(src->GetArtMethod()));
|
||||
}
|
||||
}
|
||||
|
||||
void PatchOat::FixupMethod(ArtMethod* object, ArtMethod* copy) {
|
||||
const PointerSize pointer_size = InstructionSetPointerSize(isa_);
|
||||
copy->CopyFrom(object, pointer_size);
|
||||
// Just update the entry points if it looks like we should.
|
||||
// TODO: sanity check all the pointers' values
|
||||
copy->SetDeclaringClass(RelocatedAddressOfPointer(object->GetDeclaringClass()));
|
||||
copy->SetDexCacheResolvedMethods(
|
||||
RelocatedAddressOfPointer(object->GetDexCacheResolvedMethods(pointer_size)), pointer_size);
|
||||
copy->SetEntryPointFromQuickCompiledCodePtrSize(RelocatedAddressOfPointer(
|
||||
object->GetEntryPointFromQuickCompiledCodePtrSize(pointer_size)), pointer_size);
|
||||
// No special handling for IMT conflict table since all pointers are moved by the same offset.
|
||||
copy->SetDataPtrSize(RelocatedAddressOfPointer(
|
||||
object->GetDataPtrSize(pointer_size)), pointer_size);
|
||||
}
|
||||
|
||||
static int orig_argc;
|
||||
static char** orig_argv;
|
||||
|
||||
static std::string CommandLine() {
|
||||
std::vector<std::string> command;
|
||||
for (int i = 0; i < orig_argc; ++i) {
|
||||
command.push_back(orig_argv[i]);
|
||||
}
|
||||
return android::base::Join(command, ' ');
|
||||
}
|
||||
|
||||
static void UsageErrorV(const char* fmt, va_list ap) {
|
||||
std::string error;
|
||||
android::base::StringAppendV(&error, fmt, ap);
|
||||
LOG(ERROR) << error;
|
||||
}
|
||||
|
||||
static void UsageError(const char* fmt, ...) {
|
||||
va_list ap;
|
||||
va_start(ap, fmt);
|
||||
UsageErrorV(fmt, ap);
|
||||
va_end(ap);
|
||||
}
|
||||
|
||||
NO_RETURN static void Usage(const char *fmt, ...) {
|
||||
va_list ap;
|
||||
va_start(ap, fmt);
|
||||
UsageErrorV(fmt, ap);
|
||||
va_end(ap);
|
||||
|
||||
UsageError("Command: %s", CommandLine().c_str());
|
||||
UsageError("Usage: patchoat [options]...");
|
||||
UsageError("");
|
||||
UsageError(" --instruction-set=<isa>: Specifies the instruction set the patched code is");
|
||||
UsageError(" compiled for (required).");
|
||||
UsageError("");
|
||||
UsageError(" --input-image-location=<file.art>: Specifies the 'location' of the image file to");
|
||||
UsageError(" be patched.");
|
||||
UsageError("");
|
||||
UsageError(" --output-image-file=<file.art>: Specifies the exact file to write the patched");
|
||||
UsageError(" image file to.");
|
||||
UsageError("");
|
||||
UsageError(" --base-offset-delta=<delta>: Specify the amount to change the old base-offset by.");
|
||||
UsageError(" This value may be negative.");
|
||||
UsageError("");
|
||||
UsageError(" --dump-timings: dump out patch timing information");
|
||||
UsageError("");
|
||||
UsageError(" --no-dump-timings: do not dump out patch timing information");
|
||||
UsageError("");
|
||||
|
||||
exit(EXIT_FAILURE);
|
||||
}
|
||||
|
||||
static int patchoat_image(TimingLogger& timings,
|
||||
InstructionSet isa,
|
||||
const std::string& input_image_location,
|
||||
const std::string& output_image_filename,
|
||||
off_t base_delta,
|
||||
bool base_delta_set,
|
||||
bool debug) {
|
||||
CHECK(!input_image_location.empty());
|
||||
if (output_image_filename.empty()) {
|
||||
Usage("Image patching requires --output-image-file");
|
||||
}
|
||||
|
||||
if (!base_delta_set) {
|
||||
Usage("Must supply a desired new offset or delta.");
|
||||
}
|
||||
|
||||
if (!IsAligned<kPageSize>(base_delta)) {
|
||||
Usage("Base offset/delta must be aligned to a pagesize (0x%08x) boundary.", kPageSize);
|
||||
}
|
||||
|
||||
if (debug) {
|
||||
LOG(INFO) << "moving offset by " << base_delta
|
||||
<< " (0x" << std::hex << base_delta << ") bytes or "
|
||||
<< std::dec << (base_delta/kPageSize) << " pages.";
|
||||
}
|
||||
|
||||
TimingLogger::ScopedTiming pt("patch image and oat", &timings);
|
||||
|
||||
std::string output_directory =
|
||||
output_image_filename.substr(0, output_image_filename.find_last_of('/'));
|
||||
bool ret = PatchOat::Patch(input_image_location, base_delta, output_directory, isa, &timings);
|
||||
|
||||
if (kIsDebugBuild) {
|
||||
LOG(INFO) << "Exiting with return ... " << ret;
|
||||
}
|
||||
return ret ? EXIT_SUCCESS : EXIT_FAILURE;
|
||||
}
|
||||
|
||||
static int patchoat(int argc, char **argv) {
|
||||
InitLogging(argv, Runtime::Abort);
|
||||
MemMap::Init();
|
||||
const bool debug = kIsDebugBuild;
|
||||
orig_argc = argc;
|
||||
orig_argv = argv;
|
||||
TimingLogger timings("patcher", false, false);
|
||||
|
||||
// Skip over the command name.
|
||||
argv++;
|
||||
argc--;
|
||||
|
||||
if (argc == 0) {
|
||||
Usage("No arguments specified");
|
||||
}
|
||||
|
||||
timings.StartTiming("Patchoat");
|
||||
|
||||
// cmd line args
|
||||
bool isa_set = false;
|
||||
InstructionSet isa = kNone;
|
||||
std::string input_image_location;
|
||||
std::string output_image_filename;
|
||||
off_t base_delta = 0;
|
||||
bool base_delta_set = false;
|
||||
bool dump_timings = kIsDebugBuild;
|
||||
|
||||
for (int i = 0; i < argc; ++i) {
|
||||
const StringPiece option(argv[i]);
|
||||
const bool log_options = false;
|
||||
if (log_options) {
|
||||
LOG(INFO) << "patchoat: option[" << i << "]=" << argv[i];
|
||||
}
|
||||
if (option.starts_with("--instruction-set=")) {
|
||||
isa_set = true;
|
||||
const char* isa_str = option.substr(strlen("--instruction-set=")).data();
|
||||
isa = GetInstructionSetFromString(isa_str);
|
||||
if (isa == kNone) {
|
||||
Usage("Unknown or invalid instruction set %s", isa_str);
|
||||
}
|
||||
} else if (option.starts_with("--input-image-location=")) {
|
||||
input_image_location = option.substr(strlen("--input-image-location=")).data();
|
||||
} else if (option.starts_with("--output-image-file=")) {
|
||||
output_image_filename = option.substr(strlen("--output-image-file=")).data();
|
||||
} else if (option.starts_with("--base-offset-delta=")) {
|
||||
const char* base_delta_str = option.substr(strlen("--base-offset-delta=")).data();
|
||||
base_delta_set = true;
|
||||
if (!ParseInt(base_delta_str, &base_delta)) {
|
||||
Usage("Failed to parse --base-offset-delta argument '%s' as an off_t", base_delta_str);
|
||||
}
|
||||
} else if (option == "--dump-timings") {
|
||||
dump_timings = true;
|
||||
} else if (option == "--no-dump-timings") {
|
||||
dump_timings = false;
|
||||
} else {
|
||||
Usage("Unknown argument %s", option.data());
|
||||
}
|
||||
}
|
||||
|
||||
// The instruction set is mandatory. This simplifies things...
|
||||
if (!isa_set) {
|
||||
Usage("Instruction set must be set.");
|
||||
}
|
||||
|
||||
int ret = patchoat_image(timings,
|
||||
isa,
|
||||
input_image_location,
|
||||
output_image_filename,
|
||||
base_delta,
|
||||
base_delta_set,
|
||||
debug);
|
||||
|
||||
timings.EndTiming();
|
||||
if (dump_timings) {
|
||||
LOG(INFO) << Dumpable<TimingLogger>(timings);
|
||||
}
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
} // namespace art
|
||||
|
||||
int main(int argc, char **argv) {
|
||||
return art::patchoat(argc, argv);
|
||||
}
|
||||
195
android/art/patchoat/patchoat.h
Normal file
195
android/art/patchoat/patchoat.h
Normal file
|
|
@ -0,0 +1,195 @@
|
|||
/*
|
||||
* Copyright (C) 2014 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.
|
||||
*/
|
||||
|
||||
#ifndef ART_PATCHOAT_PATCHOAT_H_
|
||||
#define ART_PATCHOAT_PATCHOAT_H_
|
||||
|
||||
#include "arch/instruction_set.h"
|
||||
#include "base/enums.h"
|
||||
#include "base/macros.h"
|
||||
#include "base/mutex.h"
|
||||
#include "elf_file.h"
|
||||
#include "elf_utils.h"
|
||||
#include "gc/accounting/space_bitmap.h"
|
||||
#include "gc/space/image_space.h"
|
||||
#include "gc/heap.h"
|
||||
#include "os.h"
|
||||
#include "runtime.h"
|
||||
|
||||
namespace art {
|
||||
|
||||
class ArtMethod;
|
||||
class ImageHeader;
|
||||
class OatHeader;
|
||||
|
||||
namespace mirror {
|
||||
class Object;
|
||||
class PointerArray;
|
||||
class Reference;
|
||||
class Class;
|
||||
} // namespace mirror
|
||||
|
||||
class PatchOat {
|
||||
public:
|
||||
static bool Patch(const std::string& image_location,
|
||||
off_t delta,
|
||||
const std::string& output_directory,
|
||||
InstructionSet isa,
|
||||
TimingLogger* timings);
|
||||
|
||||
~PatchOat() {}
|
||||
PatchOat(PatchOat&&) = default;
|
||||
|
||||
private:
|
||||
// All pointers are only borrowed.
|
||||
PatchOat(InstructionSet isa, MemMap* image,
|
||||
gc::accounting::ContinuousSpaceBitmap* bitmap, MemMap* heap, off_t delta,
|
||||
std::map<gc::space::ImageSpace*, std::unique_ptr<MemMap>>* map, TimingLogger* timings)
|
||||
: image_(image), bitmap_(bitmap), heap_(heap),
|
||||
delta_(delta), isa_(isa), space_map_(map), timings_(timings) {}
|
||||
|
||||
// Was the .art image at image_path made with --compile-pic ?
|
||||
static bool IsImagePic(const ImageHeader& image_header, const std::string& image_path);
|
||||
|
||||
enum MaybePic {
|
||||
NOT_PIC, // Code not pic. Patch as usual.
|
||||
PIC, // Code was pic. Create symlink; skip OAT patching.
|
||||
ERROR_OAT_FILE, // Failed to symlink oat file
|
||||
ERROR_FIRST = ERROR_OAT_FILE,
|
||||
};
|
||||
|
||||
// Was the .oat image at oat_in made with --compile-pic ?
|
||||
static MaybePic IsOatPic(const ElfFile* oat_in);
|
||||
|
||||
// Attempt to replace the file with a symlink
|
||||
// Returns false if it fails
|
||||
static bool ReplaceOatFileWithSymlink(const std::string& input_oat_filename,
|
||||
const std::string& output_oat_filename);
|
||||
|
||||
void VisitObject(mirror::Object* obj)
|
||||
REQUIRES_SHARED(Locks::mutator_lock_);
|
||||
void FixupMethod(ArtMethod* object, ArtMethod* copy)
|
||||
REQUIRES_SHARED(Locks::mutator_lock_);
|
||||
|
||||
bool PatchImage(bool primary_image) REQUIRES_SHARED(Locks::mutator_lock_);
|
||||
void PatchArtFields(const ImageHeader* image_header) REQUIRES_SHARED(Locks::mutator_lock_);
|
||||
void PatchArtMethods(const ImageHeader* image_header) REQUIRES_SHARED(Locks::mutator_lock_);
|
||||
void PatchImTables(const ImageHeader* image_header) REQUIRES_SHARED(Locks::mutator_lock_);
|
||||
void PatchImtConflictTables(const ImageHeader* image_header)
|
||||
REQUIRES_SHARED(Locks::mutator_lock_);
|
||||
void PatchInternedStrings(const ImageHeader* image_header)
|
||||
REQUIRES_SHARED(Locks::mutator_lock_);
|
||||
void PatchClassTable(const ImageHeader* image_header)
|
||||
REQUIRES_SHARED(Locks::mutator_lock_);
|
||||
void PatchDexFileArrays(mirror::ObjectArray<mirror::Object>* img_roots)
|
||||
REQUIRES_SHARED(Locks::mutator_lock_);
|
||||
|
||||
bool WriteImage(File* out);
|
||||
|
||||
template <typename T>
|
||||
T* RelocatedCopyOf(T* obj) const {
|
||||
if (obj == nullptr) {
|
||||
return nullptr;
|
||||
}
|
||||
DCHECK_GT(reinterpret_cast<uintptr_t>(obj), reinterpret_cast<uintptr_t>(heap_->Begin()));
|
||||
DCHECK_LT(reinterpret_cast<uintptr_t>(obj), reinterpret_cast<uintptr_t>(heap_->End()));
|
||||
uintptr_t heap_off =
|
||||
reinterpret_cast<uintptr_t>(obj) - reinterpret_cast<uintptr_t>(heap_->Begin());
|
||||
DCHECK_LT(heap_off, image_->Size());
|
||||
return reinterpret_cast<T*>(image_->Begin() + heap_off);
|
||||
}
|
||||
|
||||
template <typename T>
|
||||
T* RelocatedCopyOfFollowImages(T* obj) const {
|
||||
if (obj == nullptr) {
|
||||
return nullptr;
|
||||
}
|
||||
// Find ImageSpace this belongs to.
|
||||
auto image_spaces = Runtime::Current()->GetHeap()->GetBootImageSpaces();
|
||||
for (gc::space::ImageSpace* image_space : image_spaces) {
|
||||
if (image_space->Contains(obj)) {
|
||||
uintptr_t heap_off = reinterpret_cast<uintptr_t>(obj) -
|
||||
reinterpret_cast<uintptr_t>(image_space->GetMemMap()->Begin());
|
||||
return reinterpret_cast<T*>(space_map_->find(image_space)->second->Begin() + heap_off);
|
||||
}
|
||||
}
|
||||
LOG(FATAL) << "Did not find object in boot image space " << obj;
|
||||
UNREACHABLE();
|
||||
}
|
||||
|
||||
template <typename T>
|
||||
T* RelocatedAddressOfPointer(T* obj) const {
|
||||
if (obj == nullptr) {
|
||||
return obj;
|
||||
}
|
||||
auto ret = reinterpret_cast<uintptr_t>(obj) + delta_;
|
||||
// Trim off high bits in case negative relocation with 64 bit patchoat.
|
||||
if (Is32BitISA()) {
|
||||
ret = static_cast<uintptr_t>(static_cast<uint32_t>(ret));
|
||||
}
|
||||
return reinterpret_cast<T*>(ret);
|
||||
}
|
||||
|
||||
bool Is32BitISA() const {
|
||||
return InstructionSetPointerSize(isa_) == PointerSize::k32;
|
||||
}
|
||||
|
||||
// Walks through the old image and patches the mmap'd copy of it to the new offset. It does not
|
||||
// change the heap.
|
||||
class PatchVisitor {
|
||||
public:
|
||||
PatchVisitor(PatchOat* patcher, mirror::Object* copy) : patcher_(patcher), copy_(copy) {}
|
||||
~PatchVisitor() {}
|
||||
void operator() (ObjPtr<mirror::Object> obj, MemberOffset off, bool b) const
|
||||
REQUIRES(Locks::mutator_lock_, Locks::heap_bitmap_lock_);
|
||||
// For reference classes.
|
||||
void operator() (ObjPtr<mirror::Class> cls, ObjPtr<mirror::Reference> ref) const
|
||||
REQUIRES(Locks::mutator_lock_, Locks::heap_bitmap_lock_);
|
||||
// TODO: Consider using these for updating native class roots?
|
||||
void VisitRootIfNonNull(mirror::CompressedReference<mirror::Object>* root ATTRIBUTE_UNUSED)
|
||||
const {}
|
||||
void VisitRoot(mirror::CompressedReference<mirror::Object>* root ATTRIBUTE_UNUSED) const {}
|
||||
|
||||
private:
|
||||
PatchOat* const patcher_;
|
||||
mirror::Object* const copy_;
|
||||
};
|
||||
|
||||
// A mmap of the image we are patching. This is modified.
|
||||
const MemMap* const image_;
|
||||
// The bitmap over the image within the heap we are patching. This is not modified.
|
||||
gc::accounting::ContinuousSpaceBitmap* const bitmap_;
|
||||
// The heap we are patching. This is not modified.
|
||||
const MemMap* const heap_;
|
||||
// The amount we are changing the offset by.
|
||||
const off_t delta_;
|
||||
// Active instruction set, used to know the entrypoint size.
|
||||
const InstructionSet isa_;
|
||||
|
||||
const std::map<gc::space::ImageSpace*, std::unique_ptr<MemMap>>* space_map_;
|
||||
|
||||
TimingLogger* timings_;
|
||||
|
||||
class FixupRootVisitor;
|
||||
class RelocatedPointerVisitor;
|
||||
class PatchOatArtFieldVisitor;
|
||||
class PatchOatArtMethodVisitor;
|
||||
|
||||
DISALLOW_IMPLICIT_CONSTRUCTORS(PatchOat);
|
||||
};
|
||||
|
||||
} // namespace art
|
||||
#endif // ART_PATCHOAT_PATCHOAT_H_
|
||||
Loading…
Add table
Add a link
Reference in a new issue