|  | /* | 
|  | * Copyright (C) 2016 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 <stdint.h> | 
|  |  | 
|  | #include <deque> | 
|  | #include <vector> | 
|  |  | 
|  | #include <gtest/gtest.h> | 
|  |  | 
|  | #include <unwindstack/Log.h> | 
|  |  | 
|  | #include "ArmExidx.h" | 
|  |  | 
|  | #include "LogFake.h" | 
|  | #include "MemoryFake.h" | 
|  |  | 
|  | namespace unwindstack { | 
|  |  | 
|  | class ArmExidxExtractTest : public ::testing::Test { | 
|  | protected: | 
|  | void SetUp() override { | 
|  | ResetLogs(); | 
|  | elf_memory_.Clear(); | 
|  | exidx_ = new ArmExidx(nullptr, &elf_memory_, nullptr); | 
|  | data_ = exidx_->data(); | 
|  | data_->clear(); | 
|  | } | 
|  |  | 
|  | void TearDown() override { | 
|  | delete exidx_; | 
|  | } | 
|  |  | 
|  | ArmExidx* exidx_ = nullptr; | 
|  | std::deque<uint8_t>* data_; | 
|  | MemoryFake elf_memory_; | 
|  | }; | 
|  |  | 
|  | TEST_F(ArmExidxExtractTest, bad_alignment) { | 
|  | ASSERT_FALSE(exidx_->ExtractEntryData(0x1001)); | 
|  | ASSERT_EQ(ARM_STATUS_INVALID_ALIGNMENT, exidx_->status()); | 
|  | ASSERT_TRUE(data_->empty()); | 
|  | } | 
|  |  | 
|  | TEST_F(ArmExidxExtractTest, cant_unwind) { | 
|  | elf_memory_.SetData32(0x1000, 0x7fff2340); | 
|  | elf_memory_.SetData32(0x1004, 1); | 
|  | ASSERT_FALSE(exidx_->ExtractEntryData(0x1000)); | 
|  | ASSERT_EQ(ARM_STATUS_NO_UNWIND, exidx_->status()); | 
|  | ASSERT_TRUE(data_->empty()); | 
|  | } | 
|  |  | 
|  | TEST_F(ArmExidxExtractTest, compact) { | 
|  | elf_memory_.SetData32(0x4000, 0x7ffa3000); | 
|  | elf_memory_.SetData32(0x4004, 0x80a8b0b0); | 
|  | ASSERT_TRUE(exidx_->ExtractEntryData(0x4000)); | 
|  | ASSERT_EQ(3U, data_->size()); | 
|  | ASSERT_EQ(0xa8, data_->at(0)); | 
|  | ASSERT_EQ(0xb0, data_->at(1)); | 
|  | ASSERT_EQ(0xb0, data_->at(2)); | 
|  |  | 
|  | // Missing finish gets added. | 
|  | elf_memory_.Clear(); | 
|  | elf_memory_.SetData32(0x534, 0x7ffa3000); | 
|  | elf_memory_.SetData32(0x538, 0x80a1a2a3); | 
|  | ASSERT_TRUE(exidx_->ExtractEntryData(0x534)); | 
|  | ASSERT_EQ(4U, data_->size()); | 
|  | ASSERT_EQ(0xa1, data_->at(0)); | 
|  | ASSERT_EQ(0xa2, data_->at(1)); | 
|  | ASSERT_EQ(0xa3, data_->at(2)); | 
|  | ASSERT_EQ(0xb0, data_->at(3)); | 
|  | } | 
|  |  | 
|  | TEST_F(ArmExidxExtractTest, compact_non_zero_personality) { | 
|  | elf_memory_.SetData32(0x4000, 0x7ffa3000); | 
|  |  | 
|  | uint32_t compact_value = 0x80a8b0b0; | 
|  | for (size_t i = 1; i < 16; i++) { | 
|  | elf_memory_.SetData32(0x4004, compact_value | (i << 24)); | 
|  | ASSERT_FALSE(exidx_->ExtractEntryData(0x4000)); | 
|  | ASSERT_EQ(ARM_STATUS_INVALID_PERSONALITY, exidx_->status()); | 
|  | } | 
|  | } | 
|  |  | 
|  | TEST_F(ArmExidxExtractTest, second_read_compact_personality_1_2) { | 
|  | elf_memory_.SetData32(0x5000, 0x1234); | 
|  | elf_memory_.SetData32(0x5004, 0x00001230); | 
|  | elf_memory_.SetData32(0x6234, 0x8100f3b0); | 
|  | ASSERT_TRUE(exidx_->ExtractEntryData(0x5000)); | 
|  | ASSERT_EQ(2U, data_->size()); | 
|  | ASSERT_EQ(0xf3, data_->at(0)); | 
|  | ASSERT_EQ(0xb0, data_->at(1)); | 
|  |  | 
|  | elf_memory_.Clear(); | 
|  | elf_memory_.SetData32(0x5000, 0x1234); | 
|  | elf_memory_.SetData32(0x5004, 0x00001230); | 
|  | elf_memory_.SetData32(0x6234, 0x8200f3f4); | 
|  | ASSERT_TRUE(exidx_->ExtractEntryData(0x5000)); | 
|  | ASSERT_EQ(3U, data_->size()); | 
|  | ASSERT_EQ(0xf3, data_->at(0)); | 
|  | ASSERT_EQ(0xf4, data_->at(1)); | 
|  | ASSERT_EQ(0xb0, data_->at(2)); | 
|  |  | 
|  | elf_memory_.Clear(); | 
|  | elf_memory_.SetData32(0x5000, 0x1234); | 
|  | elf_memory_.SetData32(0x5004, 0x00001230); | 
|  | elf_memory_.SetData32(0x6234, 0x8201f3f4); | 
|  | elf_memory_.SetData32(0x6238, 0x102030b0); | 
|  | ASSERT_TRUE(exidx_->ExtractEntryData(0x5000)); | 
|  | ASSERT_EQ(6U, data_->size()); | 
|  | ASSERT_EQ(0xf3, data_->at(0)); | 
|  | ASSERT_EQ(0xf4, data_->at(1)); | 
|  | ASSERT_EQ(0x10, data_->at(2)); | 
|  | ASSERT_EQ(0x20, data_->at(3)); | 
|  | ASSERT_EQ(0x30, data_->at(4)); | 
|  | ASSERT_EQ(0xb0, data_->at(5)); | 
|  |  | 
|  | elf_memory_.Clear(); | 
|  | elf_memory_.SetData32(0x5000, 0x1234); | 
|  | elf_memory_.SetData32(0x5004, 0x00001230); | 
|  | elf_memory_.SetData32(0x6234, 0x8103f3f4); | 
|  | elf_memory_.SetData32(0x6238, 0x10203040); | 
|  | elf_memory_.SetData32(0x623c, 0x50607080); | 
|  | elf_memory_.SetData32(0x6240, 0x90a0c0d0); | 
|  | ASSERT_TRUE(exidx_->ExtractEntryData(0x5000)); | 
|  | ASSERT_EQ(15U, data_->size()); | 
|  | ASSERT_EQ(0xf3, data_->at(0)); | 
|  | ASSERT_EQ(0xf4, data_->at(1)); | 
|  | ASSERT_EQ(0x10, data_->at(2)); | 
|  | ASSERT_EQ(0x20, data_->at(3)); | 
|  | ASSERT_EQ(0x30, data_->at(4)); | 
|  | ASSERT_EQ(0x40, data_->at(5)); | 
|  | ASSERT_EQ(0x50, data_->at(6)); | 
|  | ASSERT_EQ(0x60, data_->at(7)); | 
|  | ASSERT_EQ(0x70, data_->at(8)); | 
|  | ASSERT_EQ(0x80, data_->at(9)); | 
|  | ASSERT_EQ(0x90, data_->at(10)); | 
|  | ASSERT_EQ(0xa0, data_->at(11)); | 
|  | ASSERT_EQ(0xc0, data_->at(12)); | 
|  | ASSERT_EQ(0xd0, data_->at(13)); | 
|  | ASSERT_EQ(0xb0, data_->at(14)); | 
|  | } | 
|  |  | 
|  | TEST_F(ArmExidxExtractTest, second_read_compact_personality_illegal) { | 
|  | elf_memory_.SetData32(0x5000, 0x7ffa1e48); | 
|  | elf_memory_.SetData32(0x5004, 0x1230); | 
|  | elf_memory_.SetData32(0x6234, 0x832132b0); | 
|  | ASSERT_FALSE(exidx_->ExtractEntryData(0x5000)); | 
|  | ASSERT_EQ(ARM_STATUS_INVALID_PERSONALITY, exidx_->status()); | 
|  |  | 
|  | elf_memory_.Clear(); | 
|  | elf_memory_.SetData32(0x5000, 0x7ffa1e48); | 
|  | elf_memory_.SetData32(0x5004, 0x1230); | 
|  | elf_memory_.SetData32(0x6234, 0x842132b0); | 
|  | ASSERT_FALSE(exidx_->ExtractEntryData(0x5000)); | 
|  | ASSERT_EQ(ARM_STATUS_INVALID_PERSONALITY, exidx_->status()); | 
|  | } | 
|  |  | 
|  | TEST_F(ArmExidxExtractTest, second_read_offset_is_negative) { | 
|  | elf_memory_.SetData32(0x5000, 0x7ffa1e48); | 
|  | elf_memory_.SetData32(0x5004, 0x7fffb1e0); | 
|  | elf_memory_.SetData32(0x1e4, 0x842132b0); | 
|  | ASSERT_FALSE(exidx_->ExtractEntryData(0x5000)); | 
|  | ASSERT_EQ(ARM_STATUS_INVALID_PERSONALITY, exidx_->status()); | 
|  | } | 
|  |  | 
|  | TEST_F(ArmExidxExtractTest, second_read_not_compact) { | 
|  | elf_memory_.SetData32(0x5000, 0x1234); | 
|  | elf_memory_.SetData32(0x5004, 0x00001230); | 
|  | elf_memory_.SetData32(0x6234, 0x1); | 
|  | elf_memory_.SetData32(0x6238, 0x001122b0); | 
|  | ASSERT_TRUE(exidx_->ExtractEntryData(0x5000)); | 
|  | ASSERT_EQ(3U, data_->size()); | 
|  | ASSERT_EQ(0x11, data_->at(0)); | 
|  | ASSERT_EQ(0x22, data_->at(1)); | 
|  | ASSERT_EQ(0xb0, data_->at(2)); | 
|  |  | 
|  | elf_memory_.Clear(); | 
|  | elf_memory_.SetData32(0x5000, 0x1234); | 
|  | elf_memory_.SetData32(0x5004, 0x00001230); | 
|  | elf_memory_.SetData32(0x6234, 0x2); | 
|  | elf_memory_.SetData32(0x6238, 0x00112233); | 
|  | ASSERT_TRUE(exidx_->ExtractEntryData(0x5000)); | 
|  | ASSERT_EQ(4U, data_->size()); | 
|  | ASSERT_EQ(0x11, data_->at(0)); | 
|  | ASSERT_EQ(0x22, data_->at(1)); | 
|  | ASSERT_EQ(0x33, data_->at(2)); | 
|  | ASSERT_EQ(0xb0, data_->at(3)); | 
|  |  | 
|  | elf_memory_.Clear(); | 
|  | elf_memory_.SetData32(0x5000, 0x1234); | 
|  | elf_memory_.SetData32(0x5004, 0x00001230); | 
|  | elf_memory_.SetData32(0x6234, 0x3); | 
|  | elf_memory_.SetData32(0x6238, 0x01112233); | 
|  | elf_memory_.SetData32(0x623c, 0x445566b0); | 
|  | ASSERT_TRUE(exidx_->ExtractEntryData(0x5000)); | 
|  | ASSERT_EQ(7U, data_->size()); | 
|  | ASSERT_EQ(0x11, data_->at(0)); | 
|  | ASSERT_EQ(0x22, data_->at(1)); | 
|  | ASSERT_EQ(0x33, data_->at(2)); | 
|  | ASSERT_EQ(0x44, data_->at(3)); | 
|  | ASSERT_EQ(0x55, data_->at(4)); | 
|  | ASSERT_EQ(0x66, data_->at(5)); | 
|  | ASSERT_EQ(0xb0, data_->at(6)); | 
|  |  | 
|  | elf_memory_.Clear(); | 
|  | elf_memory_.SetData32(0x5000, 0x1234); | 
|  | elf_memory_.SetData32(0x5004, 0x00001230); | 
|  | elf_memory_.SetData32(0x6234, 0x3); | 
|  | elf_memory_.SetData32(0x6238, 0x05112233); | 
|  | elf_memory_.SetData32(0x623c, 0x01020304); | 
|  | elf_memory_.SetData32(0x6240, 0x05060708); | 
|  | elf_memory_.SetData32(0x6244, 0x090a0b0c); | 
|  | elf_memory_.SetData32(0x6248, 0x0d0e0f10); | 
|  | elf_memory_.SetData32(0x624c, 0x11121314); | 
|  | ASSERT_TRUE(exidx_->ExtractEntryData(0x5000)); | 
|  | ASSERT_EQ(24U, data_->size()); | 
|  | ASSERT_EQ(0x11, data_->at(0)); | 
|  | ASSERT_EQ(0x22, data_->at(1)); | 
|  | ASSERT_EQ(0x33, data_->at(2)); | 
|  | ASSERT_EQ(0x01, data_->at(3)); | 
|  | ASSERT_EQ(0x02, data_->at(4)); | 
|  | ASSERT_EQ(0x03, data_->at(5)); | 
|  | ASSERT_EQ(0x04, data_->at(6)); | 
|  | ASSERT_EQ(0x05, data_->at(7)); | 
|  | ASSERT_EQ(0x06, data_->at(8)); | 
|  | ASSERT_EQ(0x07, data_->at(9)); | 
|  | ASSERT_EQ(0x08, data_->at(10)); | 
|  | ASSERT_EQ(0x09, data_->at(11)); | 
|  | ASSERT_EQ(0x0a, data_->at(12)); | 
|  | ASSERT_EQ(0x0b, data_->at(13)); | 
|  | ASSERT_EQ(0x0c, data_->at(14)); | 
|  | ASSERT_EQ(0x0d, data_->at(15)); | 
|  | ASSERT_EQ(0x0e, data_->at(16)); | 
|  | ASSERT_EQ(0x0f, data_->at(17)); | 
|  | ASSERT_EQ(0x10, data_->at(18)); | 
|  | ASSERT_EQ(0x11, data_->at(19)); | 
|  | ASSERT_EQ(0x12, data_->at(20)); | 
|  | ASSERT_EQ(0x13, data_->at(21)); | 
|  | ASSERT_EQ(0x14, data_->at(22)); | 
|  | ASSERT_EQ(0xb0, data_->at(23)); | 
|  | } | 
|  |  | 
|  | TEST_F(ArmExidxExtractTest, read_failures) { | 
|  | ASSERT_FALSE(exidx_->ExtractEntryData(0x5000)); | 
|  | ASSERT_EQ(ARM_STATUS_READ_FAILED, exidx_->status()); | 
|  | EXPECT_EQ(0x5004U, exidx_->status_address()); | 
|  |  | 
|  | elf_memory_.SetData32(0x5000, 0x100); | 
|  | ASSERT_FALSE(exidx_->ExtractEntryData(0x5000)); | 
|  | ASSERT_EQ(ARM_STATUS_READ_FAILED, exidx_->status()); | 
|  | EXPECT_EQ(0x5004U, exidx_->status_address()); | 
|  |  | 
|  | elf_memory_.SetData32(0x5004, 0x100); | 
|  | ASSERT_FALSE(exidx_->ExtractEntryData(0x5000)); | 
|  | ASSERT_EQ(ARM_STATUS_READ_FAILED, exidx_->status()); | 
|  | EXPECT_EQ(0x5104U, exidx_->status_address()); | 
|  |  | 
|  | elf_memory_.SetData32(0x5104, 0x1); | 
|  | ASSERT_FALSE(exidx_->ExtractEntryData(0x5000)); | 
|  | ASSERT_EQ(ARM_STATUS_READ_FAILED, exidx_->status()); | 
|  | EXPECT_EQ(0x5108U, exidx_->status_address()); | 
|  |  | 
|  | elf_memory_.SetData32(0x5108, 0x01010203); | 
|  | ASSERT_FALSE(exidx_->ExtractEntryData(0x5000)); | 
|  | ASSERT_EQ(ARM_STATUS_READ_FAILED, exidx_->status()); | 
|  | EXPECT_EQ(0x510cU, exidx_->status_address()); | 
|  | } | 
|  |  | 
|  | TEST_F(ArmExidxExtractTest, malformed) { | 
|  | elf_memory_.SetData32(0x5000, 0x100); | 
|  | elf_memory_.SetData32(0x5004, 0x100); | 
|  | elf_memory_.SetData32(0x5104, 0x1); | 
|  | elf_memory_.SetData32(0x5108, 0x06010203); | 
|  | ASSERT_FALSE(exidx_->ExtractEntryData(0x5000)); | 
|  | ASSERT_EQ(ARM_STATUS_MALFORMED, exidx_->status()); | 
|  |  | 
|  | elf_memory_.Clear(); | 
|  | elf_memory_.SetData32(0x5000, 0x100); | 
|  | elf_memory_.SetData32(0x5004, 0x100); | 
|  | elf_memory_.SetData32(0x5104, 0x1); | 
|  | elf_memory_.SetData32(0x5108, 0x81060203); | 
|  | ASSERT_FALSE(exidx_->ExtractEntryData(0x5000)); | 
|  | ASSERT_EQ(ARM_STATUS_MALFORMED, exidx_->status()); | 
|  | } | 
|  |  | 
|  | TEST_F(ArmExidxExtractTest, cant_unwind_log) { | 
|  | elf_memory_.SetData32(0x1000, 0x7fff2340); | 
|  | elf_memory_.SetData32(0x1004, 1); | 
|  |  | 
|  | exidx_->set_log(ARM_LOG_FULL); | 
|  | exidx_->set_log_indent(0); | 
|  | exidx_->set_log_skip_execution(false); | 
|  |  | 
|  | ASSERT_FALSE(exidx_->ExtractEntryData(0x1000)); | 
|  | ASSERT_EQ(ARM_STATUS_NO_UNWIND, exidx_->status()); | 
|  |  | 
|  | ASSERT_EQ("4 unwind Raw Data: 0x00 0x00 0x00 0x01\n" | 
|  | "4 unwind [cantunwind]\n", GetFakeLogPrint()); | 
|  | } | 
|  |  | 
|  | TEST_F(ArmExidxExtractTest, raw_data_compact) { | 
|  | elf_memory_.SetData32(0x4000, 0x7ffa3000); | 
|  | elf_memory_.SetData32(0x4004, 0x80a8b0b0); | 
|  |  | 
|  | exidx_->set_log(ARM_LOG_FULL); | 
|  | exidx_->set_log_indent(0); | 
|  | exidx_->set_log_skip_execution(false); | 
|  |  | 
|  | ASSERT_TRUE(exidx_->ExtractEntryData(0x4000)); | 
|  | ASSERT_EQ("4 unwind Raw Data: 0xa8 0xb0 0xb0\n", GetFakeLogPrint()); | 
|  | } | 
|  |  | 
|  | TEST_F(ArmExidxExtractTest, raw_data_non_compact) { | 
|  | elf_memory_.SetData32(0x5000, 0x1234); | 
|  | elf_memory_.SetData32(0x5004, 0x00001230); | 
|  | elf_memory_.SetData32(0x6234, 0x2); | 
|  | elf_memory_.SetData32(0x6238, 0x00112233); | 
|  |  | 
|  | exidx_->set_log(ARM_LOG_FULL); | 
|  | exidx_->set_log_indent(0); | 
|  | exidx_->set_log_skip_execution(false); | 
|  |  | 
|  | ASSERT_TRUE(exidx_->ExtractEntryData(0x5000)); | 
|  | ASSERT_EQ("4 unwind Raw Data: 0x11 0x22 0x33 0xb0\n", GetFakeLogPrint()); | 
|  | } | 
|  |  | 
|  | }  // namespace unwindstack |