102 lines
4.6 KiB
C++
102 lines
4.6 KiB
C++
/*
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* Copyright (C) 2017 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include "compact_dex_file.h"
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#include "dex_file_loader.h"
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#include "gtest/gtest.h"
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namespace art {
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TEST(CompactDexFileTest, MagicAndVersion) {
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// Test permutations of valid/invalid headers.
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for (size_t i = 0; i < 2; ++i) {
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for (size_t j = 0; j < 2; ++j) {
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static const size_t len = CompactDexFile::kDexVersionLen + CompactDexFile::kDexMagicSize;
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uint8_t header[len] = {};
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std::fill_n(header, len, 0x99);
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const bool valid_magic = (i & 1) == 0;
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const bool valid_version = (j & 1) == 0;
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if (valid_magic) {
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CompactDexFile::WriteMagic(header);
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}
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if (valid_version) {
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CompactDexFile::WriteCurrentVersion(header);
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}
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EXPECT_EQ(valid_magic, CompactDexFile::IsMagicValid(header));
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EXPECT_EQ(valid_version, CompactDexFile::IsVersionValid(header));
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EXPECT_EQ(valid_magic, DexFileLoader::IsMagicValid(header));
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EXPECT_EQ(valid_magic && valid_version, DexFileLoader::IsVersionAndMagicValid(header));
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}
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}
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}
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TEST(CompactDexFileTest, CodeItemFields) {
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auto test_and_write = [&] (uint16_t registers_size,
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uint16_t ins_size,
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uint16_t outs_size,
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uint16_t tries_size,
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uint32_t insns_size_in_code_units) {
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ASSERT_GE(registers_size, ins_size);
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uint16_t buffer[sizeof(CompactDexFile::CodeItem) +
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CompactDexFile::CodeItem::kMaxPreHeaderSize] = {};
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CompactDexFile::CodeItem* code_item = reinterpret_cast<CompactDexFile::CodeItem*>(
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&buffer[CompactDexFile::CodeItem::kMaxPreHeaderSize]);
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const uint16_t* preheader_ptr = code_item->Create(registers_size,
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ins_size,
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outs_size,
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tries_size,
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insns_size_in_code_units,
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code_item->GetPreHeader());
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ASSERT_GT(preheader_ptr, buffer);
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uint16_t out_registers_size;
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uint16_t out_ins_size;
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uint16_t out_outs_size;
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uint16_t out_tries_size;
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uint32_t out_insns_size_in_code_units;
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code_item->DecodeFields</*kDecodeOnlyInstructionCount=*/false>(&out_insns_size_in_code_units,
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&out_registers_size,
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&out_ins_size,
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&out_outs_size,
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&out_tries_size);
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ASSERT_EQ(registers_size, out_registers_size);
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ASSERT_EQ(ins_size, out_ins_size);
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ASSERT_EQ(outs_size, out_outs_size);
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ASSERT_EQ(tries_size, out_tries_size);
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ASSERT_EQ(insns_size_in_code_units, out_insns_size_in_code_units);
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++out_insns_size_in_code_units; // Force value to change.
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code_item->DecodeFields</*kDecodeOnlyInstructionCount=*/true>(&out_insns_size_in_code_units,
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/*registers_size=*/ nullptr,
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/*ins_size=*/ nullptr,
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/*outs_size=*/ nullptr,
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/*tries_size=*/ nullptr);
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ASSERT_EQ(insns_size_in_code_units, out_insns_size_in_code_units);
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};
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static constexpr uint32_t kMax32 = std::numeric_limits<uint32_t>::max();
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static constexpr uint16_t kMax16 = std::numeric_limits<uint16_t>::max();
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test_and_write(0, 0, 0, 0, 0);
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test_and_write(kMax16, kMax16, kMax16, kMax16, kMax32);
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test_and_write(kMax16 - 1, kMax16 - 2, kMax16 - 3, kMax16 - 4, kMax32 - 5);
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test_and_write(kMax16 - 4, kMax16 - 5, kMax16 - 3, kMax16 - 2, kMax32 - 1);
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test_and_write(5, 4, 3, 2, 1);
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test_and_write(5, 0, 3, 2, 1);
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test_and_write(kMax16, 0, kMax16 / 2, 1234, kMax32 / 4);
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}
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} // namespace art
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