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929 lines
27 KiB
929 lines
27 KiB
/* |
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* Copyright (C) 2016 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 <elf.h> |
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#include <memory> |
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#include <gtest/gtest.h> |
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#include <unwindstack/ElfInterface.h> |
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#include "DwarfEncoding.h" |
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#include "ElfInterfaceArm.h" |
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#include "MemoryFake.h" |
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#if !defined(PT_ARM_EXIDX) |
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#define PT_ARM_EXIDX 0x70000001 |
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#endif |
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#if !defined(EM_AARCH64) |
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#define EM_AARCH64 183 |
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#endif |
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namespace unwindstack { |
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class ElfInterfaceTest : public ::testing::Test { |
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protected: |
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void SetUp() override { |
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memory_.Clear(); |
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} |
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void SetStringMemory(uint64_t offset, const char* string) { |
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memory_.SetMemory(offset, string, strlen(string) + 1); |
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} |
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template <typename Ehdr, typename Phdr, typename Dyn, typename ElfInterfaceType> |
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void SinglePtLoad(); |
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template <typename Ehdr, typename Phdr, typename Dyn, typename ElfInterfaceType> |
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void MultipleExecutablePtLoads(); |
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template <typename Ehdr, typename Phdr, typename Dyn, typename ElfInterfaceType> |
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void MultipleExecutablePtLoadsIncrementsNotSizeOfPhdr(); |
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template <typename Ehdr, typename Phdr, typename Dyn, typename ElfInterfaceType> |
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void NonExecutablePtLoads(); |
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template <typename Ehdr, typename Phdr, typename Dyn, typename ElfInterfaceType> |
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void ManyPhdrs(); |
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template <typename Ehdr, typename Phdr, typename Dyn, typename ElfInterfaceType> |
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void Soname(); |
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template <typename Ehdr, typename Phdr, typename Dyn, typename ElfInterfaceType> |
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void SonameAfterDtNull(); |
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template <typename Ehdr, typename Phdr, typename Dyn, typename ElfInterfaceType> |
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void SonameSize(); |
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template <typename ElfType> |
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void InitHeadersEhFrameTest(); |
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template <typename ElfType> |
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void InitHeadersDebugFrame(); |
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template <typename ElfType> |
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void InitHeadersEhFrameFail(); |
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template <typename ElfType> |
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void InitHeadersDebugFrameFail(); |
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template <typename Ehdr, typename Shdr, typename ElfInterfaceType> |
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void InitSectionHeadersMalformed(); |
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template <typename Ehdr, typename Shdr, typename Sym, typename ElfInterfaceType> |
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void InitSectionHeaders(uint64_t entry_size); |
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template <typename Ehdr, typename Shdr, typename ElfInterfaceType> |
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void InitSectionHeadersOffsets(); |
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template <typename Sym> |
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void InitSym(uint64_t offset, uint32_t value, uint32_t size, uint32_t name_offset, |
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uint64_t sym_offset, const char* name); |
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MemoryFake memory_; |
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}; |
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template <typename Sym> |
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void ElfInterfaceTest::InitSym(uint64_t offset, uint32_t value, uint32_t size, uint32_t name_offset, |
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uint64_t sym_offset, const char* name) { |
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Sym sym; |
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memset(&sym, 0, sizeof(sym)); |
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sym.st_info = STT_FUNC; |
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sym.st_value = value; |
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sym.st_size = size; |
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sym.st_name = name_offset; |
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sym.st_shndx = SHN_COMMON; |
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memory_.SetMemory(offset, &sym, sizeof(sym)); |
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memory_.SetMemory(sym_offset + name_offset, name, strlen(name) + 1); |
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} |
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template <typename Ehdr, typename Phdr, typename Dyn, typename ElfInterfaceType> |
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void ElfInterfaceTest::SinglePtLoad() { |
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std::unique_ptr<ElfInterface> elf(new ElfInterfaceType(&memory_)); |
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Ehdr ehdr; |
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memset(&ehdr, 0, sizeof(ehdr)); |
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ehdr.e_phoff = 0x100; |
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ehdr.e_phnum = 1; |
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ehdr.e_phentsize = sizeof(Phdr); |
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memory_.SetMemory(0, &ehdr, sizeof(ehdr)); |
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Phdr phdr; |
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memset(&phdr, 0, sizeof(phdr)); |
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phdr.p_type = PT_LOAD; |
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phdr.p_vaddr = 0x2000; |
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phdr.p_memsz = 0x10000; |
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phdr.p_flags = PF_R | PF_X; |
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phdr.p_align = 0x1000; |
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memory_.SetMemory(0x100, &phdr, sizeof(phdr)); |
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ASSERT_TRUE(elf->Init()); |
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const std::unordered_map<uint64_t, LoadInfo>& pt_loads = elf->pt_loads(); |
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ASSERT_EQ(1U, pt_loads.size()); |
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LoadInfo load_data = pt_loads.at(0); |
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ASSERT_EQ(0U, load_data.offset); |
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ASSERT_EQ(0x2000U, load_data.table_offset); |
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ASSERT_EQ(0x10000U, load_data.table_size); |
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} |
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TEST_F(ElfInterfaceTest, elf32_single_pt_load) { |
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SinglePtLoad<Elf32_Ehdr, Elf32_Phdr, Elf32_Dyn, ElfInterface32>(); |
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} |
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TEST_F(ElfInterfaceTest, elf64_single_pt_load) { |
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SinglePtLoad<Elf64_Ehdr, Elf64_Phdr, Elf64_Dyn, ElfInterface64>(); |
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} |
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template <typename Ehdr, typename Phdr, typename Dyn, typename ElfInterfaceType> |
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void ElfInterfaceTest::MultipleExecutablePtLoads() { |
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std::unique_ptr<ElfInterface> elf(new ElfInterfaceType(&memory_)); |
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Ehdr ehdr; |
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memset(&ehdr, 0, sizeof(ehdr)); |
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ehdr.e_phoff = 0x100; |
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ehdr.e_phnum = 3; |
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ehdr.e_phentsize = sizeof(Phdr); |
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memory_.SetMemory(0, &ehdr, sizeof(ehdr)); |
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Phdr phdr; |
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memset(&phdr, 0, sizeof(phdr)); |
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phdr.p_type = PT_LOAD; |
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phdr.p_vaddr = 0x2000; |
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phdr.p_memsz = 0x10000; |
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phdr.p_flags = PF_R | PF_X; |
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phdr.p_align = 0x1000; |
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memory_.SetMemory(0x100, &phdr, sizeof(phdr)); |
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memset(&phdr, 0, sizeof(phdr)); |
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phdr.p_type = PT_LOAD; |
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phdr.p_offset = 0x1000; |
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phdr.p_vaddr = 0x2001; |
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phdr.p_memsz = 0x10001; |
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phdr.p_flags = PF_R | PF_X; |
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phdr.p_align = 0x1001; |
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memory_.SetMemory(0x100 + sizeof(phdr), &phdr, sizeof(phdr)); |
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memset(&phdr, 0, sizeof(phdr)); |
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phdr.p_type = PT_LOAD; |
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phdr.p_offset = 0x2000; |
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phdr.p_vaddr = 0x2002; |
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phdr.p_memsz = 0x10002; |
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phdr.p_flags = PF_R | PF_X; |
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phdr.p_align = 0x1002; |
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memory_.SetMemory(0x100 + 2 * sizeof(phdr), &phdr, sizeof(phdr)); |
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ASSERT_TRUE(elf->Init()); |
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const std::unordered_map<uint64_t, LoadInfo>& pt_loads = elf->pt_loads(); |
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ASSERT_EQ(3U, pt_loads.size()); |
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LoadInfo load_data = pt_loads.at(0); |
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ASSERT_EQ(0U, load_data.offset); |
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ASSERT_EQ(0x2000U, load_data.table_offset); |
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ASSERT_EQ(0x10000U, load_data.table_size); |
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load_data = pt_loads.at(0x1000); |
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ASSERT_EQ(0x1000U, load_data.offset); |
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ASSERT_EQ(0x2001U, load_data.table_offset); |
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ASSERT_EQ(0x10001U, load_data.table_size); |
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load_data = pt_loads.at(0x2000); |
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ASSERT_EQ(0x2000U, load_data.offset); |
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ASSERT_EQ(0x2002U, load_data.table_offset); |
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ASSERT_EQ(0x10002U, load_data.table_size); |
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} |
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TEST_F(ElfInterfaceTest, elf32_multiple_executable_pt_loads) { |
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MultipleExecutablePtLoads<Elf32_Ehdr, Elf32_Phdr, Elf32_Dyn, ElfInterface32>(); |
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} |
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TEST_F(ElfInterfaceTest, elf64_multiple_executable_pt_loads) { |
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MultipleExecutablePtLoads<Elf64_Ehdr, Elf64_Phdr, Elf64_Dyn, ElfInterface64>(); |
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} |
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template <typename Ehdr, typename Phdr, typename Dyn, typename ElfInterfaceType> |
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void ElfInterfaceTest::MultipleExecutablePtLoadsIncrementsNotSizeOfPhdr() { |
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std::unique_ptr<ElfInterface> elf(new ElfInterfaceType(&memory_)); |
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Ehdr ehdr; |
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memset(&ehdr, 0, sizeof(ehdr)); |
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ehdr.e_phoff = 0x100; |
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ehdr.e_phnum = 3; |
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ehdr.e_phentsize = sizeof(Phdr) + 100; |
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memory_.SetMemory(0, &ehdr, sizeof(ehdr)); |
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Phdr phdr; |
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memset(&phdr, 0, sizeof(phdr)); |
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phdr.p_type = PT_LOAD; |
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phdr.p_vaddr = 0x2000; |
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phdr.p_memsz = 0x10000; |
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phdr.p_flags = PF_R | PF_X; |
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phdr.p_align = 0x1000; |
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memory_.SetMemory(0x100, &phdr, sizeof(phdr)); |
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memset(&phdr, 0, sizeof(phdr)); |
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phdr.p_type = PT_LOAD; |
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phdr.p_offset = 0x1000; |
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phdr.p_vaddr = 0x2001; |
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phdr.p_memsz = 0x10001; |
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phdr.p_flags = PF_R | PF_X; |
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phdr.p_align = 0x1001; |
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memory_.SetMemory(0x100 + sizeof(phdr) + 100, &phdr, sizeof(phdr)); |
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memset(&phdr, 0, sizeof(phdr)); |
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phdr.p_type = PT_LOAD; |
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phdr.p_offset = 0x2000; |
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phdr.p_vaddr = 0x2002; |
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phdr.p_memsz = 0x10002; |
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phdr.p_flags = PF_R | PF_X; |
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phdr.p_align = 0x1002; |
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memory_.SetMemory(0x100 + 2 * (sizeof(phdr) + 100), &phdr, sizeof(phdr)); |
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ASSERT_TRUE(elf->Init()); |
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const std::unordered_map<uint64_t, LoadInfo>& pt_loads = elf->pt_loads(); |
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ASSERT_EQ(3U, pt_loads.size()); |
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LoadInfo load_data = pt_loads.at(0); |
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ASSERT_EQ(0U, load_data.offset); |
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ASSERT_EQ(0x2000U, load_data.table_offset); |
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ASSERT_EQ(0x10000U, load_data.table_size); |
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load_data = pt_loads.at(0x1000); |
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ASSERT_EQ(0x1000U, load_data.offset); |
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ASSERT_EQ(0x2001U, load_data.table_offset); |
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ASSERT_EQ(0x10001U, load_data.table_size); |
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load_data = pt_loads.at(0x2000); |
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ASSERT_EQ(0x2000U, load_data.offset); |
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ASSERT_EQ(0x2002U, load_data.table_offset); |
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ASSERT_EQ(0x10002U, load_data.table_size); |
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} |
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TEST_F(ElfInterfaceTest, elf32_multiple_executable_pt_loads_increments_not_size_of_phdr) { |
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MultipleExecutablePtLoadsIncrementsNotSizeOfPhdr<Elf32_Ehdr, Elf32_Phdr, Elf32_Dyn, |
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ElfInterface32>(); |
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} |
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TEST_F(ElfInterfaceTest, elf64_multiple_executable_pt_loads_increments_not_size_of_phdr) { |
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MultipleExecutablePtLoadsIncrementsNotSizeOfPhdr<Elf64_Ehdr, Elf64_Phdr, Elf64_Dyn, |
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ElfInterface64>(); |
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} |
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template <typename Ehdr, typename Phdr, typename Dyn, typename ElfInterfaceType> |
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void ElfInterfaceTest::NonExecutablePtLoads() { |
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std::unique_ptr<ElfInterface> elf(new ElfInterfaceType(&memory_)); |
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Ehdr ehdr; |
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memset(&ehdr, 0, sizeof(ehdr)); |
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ehdr.e_phoff = 0x100; |
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ehdr.e_phnum = 3; |
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ehdr.e_phentsize = sizeof(Phdr); |
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memory_.SetMemory(0, &ehdr, sizeof(ehdr)); |
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Phdr phdr; |
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memset(&phdr, 0, sizeof(phdr)); |
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phdr.p_type = PT_LOAD; |
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phdr.p_vaddr = 0x2000; |
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phdr.p_memsz = 0x10000; |
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phdr.p_flags = PF_R; |
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phdr.p_align = 0x1000; |
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memory_.SetMemory(0x100, &phdr, sizeof(phdr)); |
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memset(&phdr, 0, sizeof(phdr)); |
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phdr.p_type = PT_LOAD; |
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phdr.p_offset = 0x1000; |
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phdr.p_vaddr = 0x2001; |
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phdr.p_memsz = 0x10001; |
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phdr.p_flags = PF_R | PF_X; |
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phdr.p_align = 0x1001; |
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memory_.SetMemory(0x100 + sizeof(phdr), &phdr, sizeof(phdr)); |
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memset(&phdr, 0, sizeof(phdr)); |
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phdr.p_type = PT_LOAD; |
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phdr.p_offset = 0x2000; |
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phdr.p_vaddr = 0x2002; |
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phdr.p_memsz = 0x10002; |
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phdr.p_flags = PF_R; |
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phdr.p_align = 0x1002; |
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memory_.SetMemory(0x100 + 2 * sizeof(phdr), &phdr, sizeof(phdr)); |
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ASSERT_TRUE(elf->Init()); |
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const std::unordered_map<uint64_t, LoadInfo>& pt_loads = elf->pt_loads(); |
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ASSERT_EQ(1U, pt_loads.size()); |
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LoadInfo load_data = pt_loads.at(0x1000); |
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ASSERT_EQ(0x1000U, load_data.offset); |
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ASSERT_EQ(0x2001U, load_data.table_offset); |
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ASSERT_EQ(0x10001U, load_data.table_size); |
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} |
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TEST_F(ElfInterfaceTest, elf32_non_executable_pt_loads) { |
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NonExecutablePtLoads<Elf32_Ehdr, Elf32_Phdr, Elf32_Dyn, ElfInterface32>(); |
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} |
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TEST_F(ElfInterfaceTest, elf64_non_executable_pt_loads) { |
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NonExecutablePtLoads<Elf64_Ehdr, Elf64_Phdr, Elf64_Dyn, ElfInterface64>(); |
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} |
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template <typename Ehdr, typename Phdr, typename Dyn, typename ElfInterfaceType> |
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void ElfInterfaceTest::ManyPhdrs() { |
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std::unique_ptr<ElfInterface> elf(new ElfInterfaceType(&memory_)); |
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Ehdr ehdr; |
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memset(&ehdr, 0, sizeof(ehdr)); |
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ehdr.e_phoff = 0x100; |
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ehdr.e_phnum = 7; |
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ehdr.e_phentsize = sizeof(Phdr); |
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memory_.SetMemory(0, &ehdr, sizeof(ehdr)); |
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Phdr phdr; |
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uint64_t phdr_offset = 0x100; |
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memset(&phdr, 0, sizeof(phdr)); |
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phdr.p_type = PT_LOAD; |
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phdr.p_vaddr = 0x2000; |
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phdr.p_memsz = 0x10000; |
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phdr.p_flags = PF_R | PF_X; |
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phdr.p_align = 0x1000; |
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memory_.SetMemory(phdr_offset, &phdr, sizeof(phdr)); |
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phdr_offset += sizeof(phdr); |
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memset(&phdr, 0, sizeof(phdr)); |
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phdr.p_type = PT_GNU_EH_FRAME; |
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memory_.SetMemory(phdr_offset, &phdr, sizeof(phdr)); |
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phdr_offset += sizeof(phdr); |
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memset(&phdr, 0, sizeof(phdr)); |
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phdr.p_type = PT_DYNAMIC; |
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memory_.SetMemory(phdr_offset, &phdr, sizeof(phdr)); |
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phdr_offset += sizeof(phdr); |
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memset(&phdr, 0, sizeof(phdr)); |
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phdr.p_type = PT_INTERP; |
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memory_.SetMemory(phdr_offset, &phdr, sizeof(phdr)); |
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phdr_offset += sizeof(phdr); |
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memset(&phdr, 0, sizeof(phdr)); |
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phdr.p_type = PT_NOTE; |
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memory_.SetMemory(phdr_offset, &phdr, sizeof(phdr)); |
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phdr_offset += sizeof(phdr); |
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memset(&phdr, 0, sizeof(phdr)); |
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phdr.p_type = PT_SHLIB; |
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memory_.SetMemory(phdr_offset, &phdr, sizeof(phdr)); |
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phdr_offset += sizeof(phdr); |
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memset(&phdr, 0, sizeof(phdr)); |
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phdr.p_type = PT_GNU_EH_FRAME; |
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memory_.SetMemory(phdr_offset, &phdr, sizeof(phdr)); |
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phdr_offset += sizeof(phdr); |
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ASSERT_TRUE(elf->Init()); |
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const std::unordered_map<uint64_t, LoadInfo>& pt_loads = elf->pt_loads(); |
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ASSERT_EQ(1U, pt_loads.size()); |
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LoadInfo load_data = pt_loads.at(0); |
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ASSERT_EQ(0U, load_data.offset); |
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ASSERT_EQ(0x2000U, load_data.table_offset); |
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ASSERT_EQ(0x10000U, load_data.table_size); |
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} |
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TEST_F(ElfInterfaceTest, elf32_many_phdrs) { |
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ElfInterfaceTest::ManyPhdrs<Elf32_Ehdr, Elf32_Phdr, Elf32_Dyn, ElfInterface32>(); |
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} |
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TEST_F(ElfInterfaceTest, elf64_many_phdrs) { |
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ElfInterfaceTest::ManyPhdrs<Elf64_Ehdr, Elf64_Phdr, Elf64_Dyn, ElfInterface64>(); |
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} |
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TEST_F(ElfInterfaceTest, elf32_arm) { |
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ElfInterfaceArm elf_arm(&memory_); |
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Elf32_Ehdr ehdr; |
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memset(&ehdr, 0, sizeof(ehdr)); |
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ehdr.e_phoff = 0x100; |
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ehdr.e_phnum = 1; |
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ehdr.e_phentsize = sizeof(Elf32_Phdr); |
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memory_.SetMemory(0, &ehdr, sizeof(ehdr)); |
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Elf32_Phdr phdr; |
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memset(&phdr, 0, sizeof(phdr)); |
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phdr.p_type = PT_ARM_EXIDX; |
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phdr.p_vaddr = 0x2000; |
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phdr.p_memsz = 16; |
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memory_.SetMemory(0x100, &phdr, sizeof(phdr)); |
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// Add arm exidx entries. |
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memory_.SetData32(0x2000, 0x1000); |
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memory_.SetData32(0x2008, 0x1000); |
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ASSERT_TRUE(elf_arm.Init()); |
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std::vector<uint32_t> entries; |
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for (auto addr : elf_arm) { |
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entries.push_back(addr); |
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} |
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ASSERT_EQ(2U, entries.size()); |
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ASSERT_EQ(0x3000U, entries[0]); |
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ASSERT_EQ(0x3008U, entries[1]); |
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ASSERT_EQ(0x2000U, elf_arm.start_offset()); |
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ASSERT_EQ(2U, elf_arm.total_entries()); |
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} |
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template <typename Ehdr, typename Phdr, typename Dyn, typename ElfInterfaceType> |
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void ElfInterfaceTest::Soname() { |
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std::unique_ptr<ElfInterface> elf(new ElfInterfaceType(&memory_)); |
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|
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Ehdr ehdr; |
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memset(&ehdr, 0, sizeof(ehdr)); |
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ehdr.e_phoff = 0x100; |
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ehdr.e_phnum = 1; |
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ehdr.e_phentsize = sizeof(Phdr); |
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memory_.SetMemory(0, &ehdr, sizeof(ehdr)); |
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Phdr phdr; |
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memset(&phdr, 0, sizeof(phdr)); |
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phdr.p_type = PT_DYNAMIC; |
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phdr.p_offset = 0x2000; |
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phdr.p_memsz = sizeof(Dyn) * 3; |
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memory_.SetMemory(0x100, &phdr, sizeof(phdr)); |
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uint64_t offset = 0x2000; |
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Dyn dyn; |
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dyn.d_tag = DT_STRTAB; |
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dyn.d_un.d_ptr = 0x10000; |
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memory_.SetMemory(offset, &dyn, sizeof(dyn)); |
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offset += sizeof(dyn); |
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dyn.d_tag = DT_STRSZ; |
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dyn.d_un.d_val = 0x1000; |
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memory_.SetMemory(offset, &dyn, sizeof(dyn)); |
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offset += sizeof(dyn); |
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dyn.d_tag = DT_SONAME; |
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dyn.d_un.d_val = 0x10; |
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memory_.SetMemory(offset, &dyn, sizeof(dyn)); |
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offset += sizeof(dyn); |
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dyn.d_tag = DT_NULL; |
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memory_.SetMemory(offset, &dyn, sizeof(dyn)); |
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SetStringMemory(0x10010, "fake_soname.so"); |
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ASSERT_TRUE(elf->Init()); |
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std::string name; |
|
ASSERT_TRUE(elf->GetSoname(&name)); |
|
ASSERT_STREQ("fake_soname.so", name.c_str()); |
|
} |
|
|
|
TEST_F(ElfInterfaceTest, elf32_soname) { |
|
Soname<Elf32_Ehdr, Elf32_Phdr, Elf32_Dyn, ElfInterface32>(); |
|
} |
|
|
|
TEST_F(ElfInterfaceTest, elf64_soname) { |
|
Soname<Elf64_Ehdr, Elf64_Phdr, Elf64_Dyn, ElfInterface64>(); |
|
} |
|
|
|
template <typename Ehdr, typename Phdr, typename Dyn, typename ElfInterfaceType> |
|
void ElfInterfaceTest::SonameAfterDtNull() { |
|
std::unique_ptr<ElfInterface> elf(new ElfInterfaceType(&memory_)); |
|
|
|
Ehdr ehdr; |
|
memset(&ehdr, 0, sizeof(ehdr)); |
|
ehdr.e_phoff = 0x100; |
|
ehdr.e_phnum = 1; |
|
ehdr.e_phentsize = sizeof(Phdr); |
|
memory_.SetMemory(0, &ehdr, sizeof(ehdr)); |
|
|
|
Phdr phdr; |
|
memset(&phdr, 0, sizeof(phdr)); |
|
phdr.p_type = PT_DYNAMIC; |
|
phdr.p_offset = 0x2000; |
|
phdr.p_memsz = sizeof(Dyn) * 3; |
|
memory_.SetMemory(0x100, &phdr, sizeof(phdr)); |
|
|
|
Dyn dyn; |
|
uint64_t offset = 0x2000; |
|
|
|
dyn.d_tag = DT_STRTAB; |
|
dyn.d_un.d_ptr = 0x10000; |
|
memory_.SetMemory(offset, &dyn, sizeof(dyn)); |
|
offset += sizeof(dyn); |
|
|
|
dyn.d_tag = DT_STRSZ; |
|
dyn.d_un.d_val = 0x1000; |
|
memory_.SetMemory(offset, &dyn, sizeof(dyn)); |
|
offset += sizeof(dyn); |
|
|
|
dyn.d_tag = DT_NULL; |
|
memory_.SetMemory(offset, &dyn, sizeof(dyn)); |
|
offset += sizeof(dyn); |
|
|
|
dyn.d_tag = DT_SONAME; |
|
dyn.d_un.d_val = 0x10; |
|
memory_.SetMemory(offset, &dyn, sizeof(dyn)); |
|
offset += sizeof(dyn); |
|
|
|
SetStringMemory(0x10010, "fake_soname.so"); |
|
|
|
ASSERT_TRUE(elf->Init()); |
|
std::string name; |
|
ASSERT_FALSE(elf->GetSoname(&name)); |
|
} |
|
|
|
TEST_F(ElfInterfaceTest, elf32_soname_after_dt_null) { |
|
SonameAfterDtNull<Elf32_Ehdr, Elf32_Phdr, Elf32_Dyn, ElfInterface32>(); |
|
} |
|
|
|
TEST_F(ElfInterfaceTest, elf64_soname_after_dt_null) { |
|
SonameAfterDtNull<Elf64_Ehdr, Elf64_Phdr, Elf64_Dyn, ElfInterface64>(); |
|
} |
|
|
|
template <typename Ehdr, typename Phdr, typename Dyn, typename ElfInterfaceType> |
|
void ElfInterfaceTest::SonameSize() { |
|
std::unique_ptr<ElfInterface> elf(new ElfInterfaceType(&memory_)); |
|
|
|
Ehdr ehdr; |
|
memset(&ehdr, 0, sizeof(ehdr)); |
|
ehdr.e_phoff = 0x100; |
|
ehdr.e_phnum = 1; |
|
ehdr.e_phentsize = sizeof(Phdr); |
|
memory_.SetMemory(0, &ehdr, sizeof(ehdr)); |
|
|
|
Phdr phdr; |
|
memset(&phdr, 0, sizeof(phdr)); |
|
phdr.p_type = PT_DYNAMIC; |
|
phdr.p_offset = 0x2000; |
|
phdr.p_memsz = sizeof(Dyn); |
|
memory_.SetMemory(0x100, &phdr, sizeof(phdr)); |
|
|
|
Dyn dyn; |
|
uint64_t offset = 0x2000; |
|
|
|
dyn.d_tag = DT_STRTAB; |
|
dyn.d_un.d_ptr = 0x10000; |
|
memory_.SetMemory(offset, &dyn, sizeof(dyn)); |
|
offset += sizeof(dyn); |
|
|
|
dyn.d_tag = DT_STRSZ; |
|
dyn.d_un.d_val = 0x10; |
|
memory_.SetMemory(offset, &dyn, sizeof(dyn)); |
|
offset += sizeof(dyn); |
|
|
|
dyn.d_tag = DT_SONAME; |
|
dyn.d_un.d_val = 0x10; |
|
memory_.SetMemory(offset, &dyn, sizeof(dyn)); |
|
offset += sizeof(dyn); |
|
|
|
dyn.d_tag = DT_NULL; |
|
memory_.SetMemory(offset, &dyn, sizeof(dyn)); |
|
|
|
SetStringMemory(0x10010, "fake_soname.so"); |
|
|
|
ASSERT_TRUE(elf->Init()); |
|
std::string name; |
|
ASSERT_FALSE(elf->GetSoname(&name)); |
|
} |
|
|
|
TEST_F(ElfInterfaceTest, elf32_soname_size) { |
|
SonameSize<Elf32_Ehdr, Elf32_Phdr, Elf32_Dyn, ElfInterface32>(); |
|
} |
|
|
|
TEST_F(ElfInterfaceTest, elf64_soname_size) { |
|
SonameSize<Elf64_Ehdr, Elf64_Phdr, Elf64_Dyn, ElfInterface64>(); |
|
} |
|
|
|
class MockElfInterface32 : public ElfInterface32 { |
|
public: |
|
MockElfInterface32(Memory* memory) : ElfInterface32(memory) {} |
|
virtual ~MockElfInterface32() = default; |
|
|
|
void TestSetEhFrameOffset(uint64_t offset) { eh_frame_offset_ = offset; } |
|
void TestSetEhFrameSize(uint64_t size) { eh_frame_size_ = size; } |
|
|
|
void TestSetDebugFrameOffset(uint64_t offset) { debug_frame_offset_ = offset; } |
|
void TestSetDebugFrameSize(uint64_t size) { debug_frame_size_ = size; } |
|
}; |
|
|
|
class MockElfInterface64 : public ElfInterface64 { |
|
public: |
|
MockElfInterface64(Memory* memory) : ElfInterface64(memory) {} |
|
virtual ~MockElfInterface64() = default; |
|
|
|
void TestSetEhFrameOffset(uint64_t offset) { eh_frame_offset_ = offset; } |
|
void TestSetEhFrameSize(uint64_t size) { eh_frame_size_ = size; } |
|
|
|
void TestSetDebugFrameOffset(uint64_t offset) { debug_frame_offset_ = offset; } |
|
void TestSetDebugFrameSize(uint64_t size) { debug_frame_size_ = size; } |
|
}; |
|
|
|
template <typename ElfType> |
|
void ElfInterfaceTest::InitHeadersEhFrameTest() { |
|
ElfType elf(&memory_); |
|
|
|
elf.TestSetEhFrameOffset(0x10000); |
|
elf.TestSetEhFrameSize(0); |
|
elf.TestSetDebugFrameOffset(0); |
|
elf.TestSetDebugFrameSize(0); |
|
|
|
memory_.SetMemory(0x10000, |
|
std::vector<uint8_t>{0x1, DW_EH_PE_udata2, DW_EH_PE_udata2, DW_EH_PE_udata2}); |
|
memory_.SetData32(0x10004, 0x500); |
|
memory_.SetData32(0x10008, 250); |
|
|
|
elf.InitHeaders(); |
|
|
|
EXPECT_FALSE(elf.eh_frame() == nullptr); |
|
EXPECT_TRUE(elf.debug_frame() == nullptr); |
|
} |
|
|
|
TEST_F(ElfInterfaceTest, init_headers_eh_frame32) { |
|
InitHeadersEhFrameTest<MockElfInterface32>(); |
|
} |
|
|
|
TEST_F(ElfInterfaceTest, init_headers_eh_frame64) { |
|
InitHeadersEhFrameTest<MockElfInterface64>(); |
|
} |
|
|
|
template <typename ElfType> |
|
void ElfInterfaceTest::InitHeadersDebugFrame() { |
|
ElfType elf(&memory_); |
|
|
|
elf.TestSetEhFrameOffset(0); |
|
elf.TestSetEhFrameSize(0); |
|
elf.TestSetDebugFrameOffset(0x5000); |
|
elf.TestSetDebugFrameSize(0x200); |
|
|
|
memory_.SetData32(0x5000, 0xfc); |
|
memory_.SetData32(0x5004, 0xffffffff); |
|
memory_.SetData8(0x5008, 1); |
|
memory_.SetData8(0x5009, '\0'); |
|
|
|
memory_.SetData32(0x5100, 0xfc); |
|
memory_.SetData32(0x5104, 0); |
|
memory_.SetData32(0x5108, 0x1500); |
|
memory_.SetData32(0x510c, 0x200); |
|
|
|
elf.InitHeaders(); |
|
|
|
EXPECT_TRUE(elf.eh_frame() == nullptr); |
|
EXPECT_FALSE(elf.debug_frame() == nullptr); |
|
} |
|
|
|
TEST_F(ElfInterfaceTest, init_headers_debug_frame32) { |
|
InitHeadersDebugFrame<MockElfInterface32>(); |
|
} |
|
|
|
TEST_F(ElfInterfaceTest, init_headers_debug_frame64) { |
|
InitHeadersDebugFrame<MockElfInterface64>(); |
|
} |
|
|
|
template <typename ElfType> |
|
void ElfInterfaceTest::InitHeadersEhFrameFail() { |
|
ElfType elf(&memory_); |
|
|
|
elf.TestSetEhFrameOffset(0x1000); |
|
elf.TestSetEhFrameSize(0x100); |
|
elf.TestSetDebugFrameOffset(0); |
|
elf.TestSetDebugFrameSize(0); |
|
|
|
elf.InitHeaders(); |
|
|
|
EXPECT_TRUE(elf.eh_frame() == nullptr); |
|
EXPECT_EQ(0U, elf.eh_frame_offset()); |
|
EXPECT_EQ(static_cast<uint64_t>(-1), elf.eh_frame_size()); |
|
EXPECT_TRUE(elf.debug_frame() == nullptr); |
|
} |
|
|
|
TEST_F(ElfInterfaceTest, init_headers_eh_frame32_fail) { |
|
InitHeadersEhFrameFail<MockElfInterface32>(); |
|
} |
|
|
|
TEST_F(ElfInterfaceTest, init_headers_eh_frame64_fail) { |
|
InitHeadersEhFrameFail<MockElfInterface64>(); |
|
} |
|
|
|
template <typename ElfType> |
|
void ElfInterfaceTest::InitHeadersDebugFrameFail() { |
|
ElfType elf(&memory_); |
|
|
|
elf.TestSetEhFrameOffset(0); |
|
elf.TestSetEhFrameSize(0); |
|
elf.TestSetDebugFrameOffset(0x1000); |
|
elf.TestSetDebugFrameSize(0x100); |
|
|
|
elf.InitHeaders(); |
|
|
|
EXPECT_TRUE(elf.eh_frame() == nullptr); |
|
EXPECT_TRUE(elf.debug_frame() == nullptr); |
|
EXPECT_EQ(0U, elf.debug_frame_offset()); |
|
EXPECT_EQ(static_cast<uint64_t>(-1), elf.debug_frame_size()); |
|
} |
|
|
|
TEST_F(ElfInterfaceTest, init_headers_debug_frame32_fail) { |
|
InitHeadersDebugFrameFail<MockElfInterface32>(); |
|
} |
|
|
|
TEST_F(ElfInterfaceTest, init_headers_debug_frame64_fail) { |
|
InitHeadersDebugFrameFail<MockElfInterface64>(); |
|
} |
|
|
|
template <typename Ehdr, typename Shdr, typename ElfInterfaceType> |
|
void ElfInterfaceTest::InitSectionHeadersMalformed() { |
|
std::unique_ptr<ElfInterfaceType> elf(new ElfInterfaceType(&memory_)); |
|
|
|
Ehdr ehdr; |
|
memset(&ehdr, 0, sizeof(ehdr)); |
|
ehdr.e_shoff = 0x1000; |
|
ehdr.e_shnum = 10; |
|
ehdr.e_shentsize = sizeof(Shdr); |
|
memory_.SetMemory(0, &ehdr, sizeof(ehdr)); |
|
|
|
ASSERT_TRUE(elf->Init()); |
|
} |
|
|
|
TEST_F(ElfInterfaceTest, init_section_headers_malformed32) { |
|
InitSectionHeadersMalformed<Elf32_Ehdr, Elf32_Shdr, ElfInterface32>(); |
|
} |
|
|
|
TEST_F(ElfInterfaceTest, init_section_headers_malformed64) { |
|
InitSectionHeadersMalformed<Elf64_Ehdr, Elf64_Shdr, ElfInterface64>(); |
|
} |
|
|
|
template <typename Ehdr, typename Shdr, typename Sym, typename ElfInterfaceType> |
|
void ElfInterfaceTest::InitSectionHeaders(uint64_t entry_size) { |
|
std::unique_ptr<ElfInterfaceType> elf(new ElfInterfaceType(&memory_)); |
|
|
|
uint64_t offset = 0x1000; |
|
|
|
Ehdr ehdr; |
|
memset(&ehdr, 0, sizeof(ehdr)); |
|
ehdr.e_shoff = offset; |
|
ehdr.e_shnum = 10; |
|
ehdr.e_shentsize = entry_size; |
|
memory_.SetMemory(0, &ehdr, sizeof(ehdr)); |
|
|
|
offset += ehdr.e_shentsize; |
|
|
|
Shdr shdr; |
|
memset(&shdr, 0, sizeof(shdr)); |
|
shdr.sh_type = SHT_SYMTAB; |
|
shdr.sh_link = 4; |
|
shdr.sh_addr = 0x5000; |
|
shdr.sh_offset = 0x5000; |
|
shdr.sh_entsize = sizeof(Sym); |
|
shdr.sh_size = shdr.sh_entsize * 10; |
|
memory_.SetMemory(offset, &shdr, sizeof(shdr)); |
|
offset += ehdr.e_shentsize; |
|
|
|
memset(&shdr, 0, sizeof(shdr)); |
|
shdr.sh_type = SHT_DYNSYM; |
|
shdr.sh_link = 4; |
|
shdr.sh_addr = 0x6000; |
|
shdr.sh_offset = 0x6000; |
|
shdr.sh_entsize = sizeof(Sym); |
|
shdr.sh_size = shdr.sh_entsize * 10; |
|
memory_.SetMemory(offset, &shdr, sizeof(shdr)); |
|
offset += ehdr.e_shentsize; |
|
|
|
memset(&shdr, 0, sizeof(shdr)); |
|
shdr.sh_type = SHT_PROGBITS; |
|
shdr.sh_name = 0xa000; |
|
memory_.SetMemory(offset, &shdr, sizeof(shdr)); |
|
offset += ehdr.e_shentsize; |
|
|
|
// The string data for the entries. |
|
memset(&shdr, 0, sizeof(shdr)); |
|
shdr.sh_type = SHT_STRTAB; |
|
shdr.sh_name = 0x20000; |
|
shdr.sh_offset = 0xf000; |
|
shdr.sh_size = 0x1000; |
|
memory_.SetMemory(offset, &shdr, sizeof(shdr)); |
|
offset += ehdr.e_shentsize; |
|
|
|
InitSym<Sym>(0x5000, 0x90000, 0x1000, 0x100, 0xf000, "function_one"); |
|
InitSym<Sym>(0x6000, 0xd0000, 0x1000, 0x300, 0xf000, "function_two"); |
|
|
|
ASSERT_TRUE(elf->Init()); |
|
EXPECT_EQ(0U, elf->debug_frame_offset()); |
|
EXPECT_EQ(0U, elf->debug_frame_size()); |
|
EXPECT_EQ(0U, elf->gnu_debugdata_offset()); |
|
EXPECT_EQ(0U, elf->gnu_debugdata_size()); |
|
|
|
// Look in the first symbol table. |
|
std::string name; |
|
uint64_t name_offset; |
|
ASSERT_TRUE(elf->GetFunctionName(0x90010, &name, &name_offset)); |
|
EXPECT_EQ("function_one", name); |
|
EXPECT_EQ(16U, name_offset); |
|
ASSERT_TRUE(elf->GetFunctionName(0xd0020, &name, &name_offset)); |
|
EXPECT_EQ("function_two", name); |
|
EXPECT_EQ(32U, name_offset); |
|
} |
|
|
|
TEST_F(ElfInterfaceTest, init_section_headers32) { |
|
InitSectionHeaders<Elf32_Ehdr, Elf32_Shdr, Elf32_Sym, ElfInterface32>(sizeof(Elf32_Shdr)); |
|
} |
|
|
|
TEST_F(ElfInterfaceTest, init_section_headers64) { |
|
InitSectionHeaders<Elf64_Ehdr, Elf64_Shdr, Elf64_Sym, ElfInterface64>(sizeof(Elf64_Shdr)); |
|
} |
|
|
|
TEST_F(ElfInterfaceTest, init_section_headers_non_std_entry_size32) { |
|
InitSectionHeaders<Elf32_Ehdr, Elf32_Shdr, Elf32_Sym, ElfInterface32>(0x100); |
|
} |
|
|
|
TEST_F(ElfInterfaceTest, init_section_headers_non_std_entry_size64) { |
|
InitSectionHeaders<Elf64_Ehdr, Elf64_Shdr, Elf64_Sym, ElfInterface64>(0x100); |
|
} |
|
|
|
template <typename Ehdr, typename Shdr, typename ElfInterfaceType> |
|
void ElfInterfaceTest::InitSectionHeadersOffsets() { |
|
std::unique_ptr<ElfInterfaceType> elf(new ElfInterfaceType(&memory_)); |
|
|
|
uint64_t offset = 0x2000; |
|
|
|
Ehdr ehdr; |
|
memset(&ehdr, 0, sizeof(ehdr)); |
|
ehdr.e_shoff = offset; |
|
ehdr.e_shnum = 10; |
|
ehdr.e_shentsize = sizeof(Shdr); |
|
ehdr.e_shstrndx = 2; |
|
memory_.SetMemory(0, &ehdr, sizeof(ehdr)); |
|
|
|
offset += ehdr.e_shentsize; |
|
|
|
Shdr shdr; |
|
memset(&shdr, 0, sizeof(shdr)); |
|
shdr.sh_type = SHT_PROGBITS; |
|
shdr.sh_link = 2; |
|
shdr.sh_name = 0x200; |
|
shdr.sh_addr = 0x5000; |
|
shdr.sh_offset = 0x5000; |
|
shdr.sh_entsize = 0x100; |
|
shdr.sh_size = 0x800; |
|
memory_.SetMemory(offset, &shdr, sizeof(shdr)); |
|
offset += ehdr.e_shentsize; |
|
|
|
// The string data for section header names. |
|
memset(&shdr, 0, sizeof(shdr)); |
|
shdr.sh_type = SHT_STRTAB; |
|
shdr.sh_name = 0x20000; |
|
shdr.sh_offset = 0xf000; |
|
shdr.sh_size = 0x1000; |
|
memory_.SetMemory(offset, &shdr, sizeof(shdr)); |
|
offset += ehdr.e_shentsize; |
|
|
|
memset(&shdr, 0, sizeof(shdr)); |
|
shdr.sh_type = SHT_PROGBITS; |
|
shdr.sh_link = 2; |
|
shdr.sh_name = 0x100; |
|
shdr.sh_addr = 0x6000; |
|
shdr.sh_offset = 0x6000; |
|
shdr.sh_entsize = 0x100; |
|
shdr.sh_size = 0x500; |
|
memory_.SetMemory(offset, &shdr, sizeof(shdr)); |
|
offset += ehdr.e_shentsize; |
|
|
|
memory_.SetMemory(0xf100, ".debug_frame", sizeof(".debug_frame")); |
|
memory_.SetMemory(0xf200, ".gnu_debugdata", sizeof(".gnu_debugdata")); |
|
|
|
ASSERT_TRUE(elf->Init()); |
|
EXPECT_EQ(0x6000U, elf->debug_frame_offset()); |
|
EXPECT_EQ(0x500U, elf->debug_frame_size()); |
|
EXPECT_EQ(0x5000U, elf->gnu_debugdata_offset()); |
|
EXPECT_EQ(0x800U, elf->gnu_debugdata_size()); |
|
} |
|
|
|
TEST_F(ElfInterfaceTest, init_section_headers_offsets32) { |
|
InitSectionHeadersOffsets<Elf32_Ehdr, Elf32_Shdr, ElfInterface32>(); |
|
} |
|
|
|
TEST_F(ElfInterfaceTest, init_section_headers_offsets64) { |
|
InitSectionHeadersOffsets<Elf64_Ehdr, Elf64_Shdr, ElfInterface64>(); |
|
} |
|
|
|
} // namespace unwindstack
|
|
|