blob: 517c5873ed5c9f257a057798cc840751893d342f [file] [log] [blame]
/*
* Copyright (C) 2017 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 "compact_dex_file.h"
#include "dex_file_loader.h"
#include "gtest/gtest.h"
namespace art {
TEST(CompactDexFileTest, MagicAndVersion) {
// Test permutations of valid/invalid headers.
for (size_t i = 0; i < 2; ++i) {
for (size_t j = 0; j < 2; ++j) {
static const size_t len = CompactDexFile::kDexVersionLen + CompactDexFile::kDexMagicSize;
uint8_t header[len] = {};
std::fill_n(header, len, 0x99);
const bool valid_magic = (i & 1) == 0;
const bool valid_version = (j & 1) == 0;
if (valid_magic) {
CompactDexFile::WriteMagic(header);
}
if (valid_version) {
CompactDexFile::WriteCurrentVersion(header);
}
EXPECT_EQ(valid_magic, CompactDexFile::IsMagicValid(header));
EXPECT_EQ(valid_version, CompactDexFile::IsVersionValid(header));
EXPECT_EQ(valid_magic, DexFileLoader::IsMagicValid(header));
EXPECT_EQ(valid_magic && valid_version, DexFileLoader::IsVersionAndMagicValid(header));
}
}
}
TEST(CompactDexFileTest, CodeItemFields) {
auto test_and_write = [&] (uint16_t registers_size,
uint16_t ins_size,
uint16_t outs_size,
uint16_t tries_size,
uint32_t insns_size_in_code_units) {
ASSERT_GE(registers_size, ins_size);
uint16_t buffer[sizeof(CompactDexFile::CodeItem) +
CompactDexFile::CodeItem::kMaxPreHeaderSize] = {};
CompactDexFile::CodeItem* code_item = reinterpret_cast<CompactDexFile::CodeItem*>(
&buffer[CompactDexFile::CodeItem::kMaxPreHeaderSize]);
const uint16_t* preheader_ptr = code_item->Create(registers_size,
ins_size,
outs_size,
tries_size,
insns_size_in_code_units,
code_item->GetPreHeader());
ASSERT_GT(preheader_ptr, buffer);
uint16_t out_registers_size;
uint16_t out_ins_size;
uint16_t out_outs_size;
uint16_t out_tries_size;
uint32_t out_insns_size_in_code_units;
code_item->DecodeFields</*kDecodeOnlyInstructionCount*/false>(&out_insns_size_in_code_units,
&out_registers_size,
&out_ins_size,
&out_outs_size,
&out_tries_size);
ASSERT_EQ(registers_size, out_registers_size);
ASSERT_EQ(ins_size, out_ins_size);
ASSERT_EQ(outs_size, out_outs_size);
ASSERT_EQ(tries_size, out_tries_size);
ASSERT_EQ(insns_size_in_code_units, out_insns_size_in_code_units);
++out_insns_size_in_code_units; // Force value to change.
code_item->DecodeFields</*kDecodeOnlyInstructionCount*/true>(&out_insns_size_in_code_units,
/*registers_size*/ nullptr,
/*ins_size*/ nullptr,
/*outs_size*/ nullptr,
/*tries_size*/ nullptr);
ASSERT_EQ(insns_size_in_code_units, out_insns_size_in_code_units);
};
static constexpr uint32_t kMax32 = std::numeric_limits<uint32_t>::max();
static constexpr uint16_t kMax16 = std::numeric_limits<uint16_t>::max();
test_and_write(0, 0, 0, 0, 0);
test_and_write(kMax16, kMax16, kMax16, kMax16, kMax32);
test_and_write(kMax16 - 1, kMax16 - 2, kMax16 - 3, kMax16 - 4, kMax32 - 5);
test_and_write(kMax16 - 4, kMax16 - 5, kMax16 - 3, kMax16 - 2, kMax32 - 1);
test_and_write(5, 4, 3, 2, 1);
test_and_write(5, 0, 3, 2, 1);
test_and_write(kMax16, 0, kMax16 / 2, 1234, kMax32 / 4);
}
} // namespace art