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/*
* 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 <elf.h>
#include <errno.h>
#include <signal.h>
#include <string.h>
#include <sys/mman.h>
#include <sys/ptrace.h>
#include <sys/types.h>
#include <unistd.h>
#include <memory>
#include <vector>
#include <android-base/file.h>
#include <android-base/test_utils.h>
#include <gtest/gtest.h>
#include <unwindstack/Elf.h>
#include <unwindstack/MapInfo.h>
#include <unwindstack/Memory.h>
#include "ElfTestUtils.h"
namespace unwindstack {
class MapInfoGetElfTest : public ::testing::Test {
protected:
void SetUp() override {
map_ = mmap(nullptr, kMapSize, PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
ASSERT_NE(MAP_FAILED, map_);
uint64_t start = reinterpret_cast<uint64_t>(map_);
info_.reset(new MapInfo{.start = start, .end = start + 1024, .offset = 0, .name = ""});
}
void TearDown() override { munmap(map_, kMapSize); }
const size_t kMapSize = 4096;
void* map_ = nullptr;
std::unique_ptr<MapInfo> info_;
};
TEST_F(MapInfoGetElfTest, invalid) {
// The map is empty, but this should still create an invalid elf object.
std::unique_ptr<Elf> elf(info_->GetElf(getpid(), false));
ASSERT_TRUE(elf.get() != nullptr);
ASSERT_FALSE(elf->valid());
}
TEST_F(MapInfoGetElfTest, valid32) {
Elf32_Ehdr ehdr;
TestInitEhdr<Elf32_Ehdr>(&ehdr, ELFCLASS32, EM_ARM);
memcpy(map_, &ehdr, sizeof(ehdr));
std::unique_ptr<Elf> elf(info_->GetElf(getpid(), false));
ASSERT_TRUE(elf.get() != nullptr);
ASSERT_TRUE(elf->valid());
EXPECT_EQ(static_cast<uint32_t>(EM_ARM), elf->machine_type());
EXPECT_EQ(ELFCLASS32, elf->class_type());
}
TEST_F(MapInfoGetElfTest, valid64) {
Elf64_Ehdr ehdr;
TestInitEhdr<Elf64_Ehdr>(&ehdr, ELFCLASS64, EM_AARCH64);
memcpy(map_, &ehdr, sizeof(ehdr));
std::unique_ptr<Elf> elf(info_->GetElf(getpid(), false));
ASSERT_TRUE(elf.get() != nullptr);
ASSERT_TRUE(elf->valid());
EXPECT_EQ(static_cast<uint32_t>(EM_AARCH64), elf->machine_type());
EXPECT_EQ(ELFCLASS64, elf->class_type());
}
TEST_F(MapInfoGetElfTest, gnu_debugdata_do_not_init32) {
TestInitGnuDebugdata<Elf32_Ehdr, Elf32_Shdr>(
ELFCLASS32, EM_ARM, false, [&](uint64_t offset, const void* ptr, size_t size) {
memcpy(&reinterpret_cast<uint8_t*>(map_)[offset], ptr, size);
});
std::unique_ptr<Elf> elf(info_->GetElf(getpid(), false));
ASSERT_TRUE(elf.get() != nullptr);
ASSERT_TRUE(elf->valid());
EXPECT_EQ(static_cast<uint32_t>(EM_ARM), elf->machine_type());
EXPECT_EQ(ELFCLASS32, elf->class_type());
EXPECT_TRUE(elf->gnu_debugdata_interface() == nullptr);
}
TEST_F(MapInfoGetElfTest, gnu_debugdata_do_not_init64) {
TestInitGnuDebugdata<Elf64_Ehdr, Elf64_Shdr>(
ELFCLASS64, EM_AARCH64, false, [&](uint64_t offset, const void* ptr, size_t size) {
memcpy(&reinterpret_cast<uint8_t*>(map_)[offset], ptr, size);
});
std::unique_ptr<Elf> elf(info_->GetElf(getpid(), false));
ASSERT_TRUE(elf.get() != nullptr);
ASSERT_TRUE(elf->valid());
EXPECT_EQ(static_cast<uint32_t>(EM_AARCH64), elf->machine_type());
EXPECT_EQ(ELFCLASS64, elf->class_type());
EXPECT_TRUE(elf->gnu_debugdata_interface() == nullptr);
}
TEST_F(MapInfoGetElfTest, gnu_debugdata_init32) {
TestInitGnuDebugdata<Elf32_Ehdr, Elf32_Shdr>(
ELFCLASS32, EM_ARM, true, [&](uint64_t offset, const void* ptr, size_t size) {
memcpy(&reinterpret_cast<uint8_t*>(map_)[offset], ptr, size);
});
std::unique_ptr<Elf> elf(info_->GetElf(getpid(), true));
ASSERT_TRUE(elf.get() != nullptr);
ASSERT_TRUE(elf->valid());
EXPECT_EQ(static_cast<uint32_t>(EM_ARM), elf->machine_type());
EXPECT_EQ(ELFCLASS32, elf->class_type());
EXPECT_TRUE(elf->gnu_debugdata_interface() != nullptr);
}
TEST_F(MapInfoGetElfTest, gnu_debugdata_init64) {
TestInitGnuDebugdata<Elf64_Ehdr, Elf64_Shdr>(
ELFCLASS64, EM_AARCH64, true, [&](uint64_t offset, const void* ptr, size_t size) {
memcpy(&reinterpret_cast<uint8_t*>(map_)[offset], ptr, size);
});
std::unique_ptr<Elf> elf(info_->GetElf(getpid(), true));
ASSERT_TRUE(elf.get() != nullptr);
ASSERT_TRUE(elf->valid());
EXPECT_EQ(static_cast<uint32_t>(EM_AARCH64), elf->machine_type());
EXPECT_EQ(ELFCLASS64, elf->class_type());
EXPECT_TRUE(elf->gnu_debugdata_interface() != nullptr);
}
} // namespace unwindstack
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