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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.h"
#include <zlib.h>
namespace art {
const uint8_t OatHeader::kOatMagic[] = { 'o', 'a', 't', '\n' };
const uint8_t OatHeader::kOatVersion[] = { '0', '0', '3', '\0' };
OatHeader::OatHeader() {
memset(this, 0, sizeof(*this));
}
OatHeader::OatHeader(InstructionSet instruction_set,
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) {
memcpy(magic_, kOatMagic, sizeof(kOatMagic));
memcpy(version_, kOatVersion, sizeof(kOatVersion));
adler32_checksum_ = adler32(0L, Z_NULL, 0);
CHECK_NE(instruction_set, kNone);
instruction_set_ = instruction_set;
UpdateChecksum(&instruction_set_, sizeof(instruction_set_));
dex_file_count_ = dex_files->size();
UpdateChecksum(&dex_file_count_, sizeof(dex_file_count_));
image_file_location_oat_checksum_ = image_file_location_oat_checksum;
UpdateChecksum(&image_file_location_oat_checksum_, sizeof(image_file_location_oat_checksum_));
CHECK(IsAligned<kPageSize>(image_file_location_oat_begin));
image_file_location_oat_begin_ = image_file_location_oat_begin;
UpdateChecksum(&image_file_location_oat_begin_, sizeof(image_file_location_oat_begin_));
image_file_location_size_ = image_file_location.size();
UpdateChecksum(&image_file_location_size_, sizeof(image_file_location_size_));
UpdateChecksum(image_file_location.data(), image_file_location_size_);
executable_offset_ = 0;
}
bool OatHeader::IsValid() const {
if (memcmp(magic_, kOatMagic, sizeof(kOatMagic)) != 0) {
return false;
}
if (memcmp(version_, kOatVersion, sizeof(kOatVersion)) != 0) {
return false;
}
return true;
}
const char* OatHeader::GetMagic() const {
CHECK(IsValid());
return reinterpret_cast<const char*>(magic_);
}
uint32_t OatHeader::GetDexFileCount() const {
DCHECK(IsValid());
return dex_file_count_;
}
uint32_t OatHeader::GetChecksum() const {
CHECK(IsValid());
return adler32_checksum_;
}
void OatHeader::UpdateChecksum(const void* data, size_t length) {
DCHECK(IsValid());
const uint8_t* bytes = reinterpret_cast<const uint8_t*>(data);
adler32_checksum_ = adler32(adler32_checksum_, bytes, length);
}
InstructionSet OatHeader::GetInstructionSet() const {
CHECK(IsValid());
return instruction_set_;
}
uint32_t OatHeader::GetExecutableOffset() const {
DCHECK(IsValid());
DCHECK_ALIGNED(executable_offset_, kPageSize);
CHECK_GT(executable_offset_, sizeof(OatHeader));
return executable_offset_;
}
uint32_t OatHeader::GetImageFileLocationOatChecksum() const {
CHECK(IsValid());
return image_file_location_oat_checksum_;
}
uint32_t OatHeader::GetImageFileLocationOatBegin() const {
CHECK(IsValid());
return image_file_location_oat_begin_;
}
uint32_t OatHeader::GetImageFileLocationSize() const {
CHECK(IsValid());
return image_file_location_size_;
}
const uint8_t* OatHeader::GetImageFileLocationData() const {
CHECK(IsValid());
return image_file_location_data_;
}
std::string OatHeader::GetImageFileLocation() const {
CHECK(IsValid());
return std::string(reinterpret_cast<const char*>(GetImageFileLocationData()),
GetImageFileLocationSize());
}
void OatHeader::SetExecutableOffset(uint32_t executable_offset) {
DCHECK_ALIGNED(executable_offset, kPageSize);
CHECK_GT(executable_offset, sizeof(OatHeader));
DCHECK(IsValid());
DCHECK_EQ(executable_offset_, 0U);
executable_offset_ = executable_offset;
UpdateChecksum(&executable_offset_, sizeof(executable_offset));
}
OatMethodOffsets::OatMethodOffsets()
: code_offset_(0),
frame_size_in_bytes_(0),
core_spill_mask_(0),
fp_spill_mask_(0),
mapping_table_offset_(0),
vmap_table_offset_(0),
gc_map_offset_(0),
invoke_stub_offset_(0)
{}
OatMethodOffsets::OatMethodOffsets(uint32_t code_offset,
uint32_t frame_size_in_bytes,
uint32_t core_spill_mask,
uint32_t fp_spill_mask,
uint32_t mapping_table_offset,
uint32_t vmap_table_offset,
uint32_t gc_map_offset,
uint32_t invoke_stub_offset
#if defined(ART_USE_LLVM_COMPILER)
, uint32_t proxy_stub_offset
#endif
)
: code_offset_(code_offset),
frame_size_in_bytes_(frame_size_in_bytes),
core_spill_mask_(core_spill_mask),
fp_spill_mask_(fp_spill_mask),
mapping_table_offset_(mapping_table_offset),
vmap_table_offset_(vmap_table_offset),
gc_map_offset_(gc_map_offset),
invoke_stub_offset_(invoke_stub_offset)
#if defined(ART_USE_LLVM_COMPILER)
, proxy_stub_offset_(proxy_stub_offset)
#endif
{}
OatMethodOffsets::~OatMethodOffsets() {}
} // namespace art
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