1 //===-- TestObjectFileELF.cpp -----------------------------------*- C++ -*-===// 2 // 3 // 4 // The LLVM Compiler Infrastructure 5 // 6 // This file is distributed under the University of Illinois Open Source 7 // License. See LICENSE.TXT for details. 8 // 9 //===----------------------------------------------------------------------===// 10 11 #include "Plugins/ObjectFile/ELF/ObjectFileELF.h" 12 #include "Plugins/SymbolVendor/ELF/SymbolVendorELF.h" 13 #include "TestingSupport/TestUtilities.h" 14 #include "lldb/Core/Module.h" 15 #include "lldb/Core/ModuleSpec.h" 16 #include "lldb/Core/Section.h" 17 #include "lldb/Host/HostInfo.h" 18 #include "llvm/ADT/Optional.h" 19 #include "llvm/Support/Compression.h" 20 #include "llvm/Support/FileUtilities.h" 21 #include "llvm/Support/Path.h" 22 #include "llvm/Support/Program.h" 23 #include "llvm/Support/raw_ostream.h" 24 #include "gtest/gtest.h" 25 26 using namespace lldb_private; 27 using namespace lldb; 28 29 class ObjectFileELFTest : public testing::Test { 30 public: 31 void SetUp() override { 32 HostInfo::Initialize(); 33 ObjectFileELF::Initialize(); 34 SymbolVendorELF::Initialize(); 35 } 36 37 void TearDown() override { 38 SymbolVendorELF::Terminate(); 39 ObjectFileELF::Terminate(); 40 HostInfo::Terminate(); 41 } 42 43 protected: 44 }; 45 46 #define ASSERT_NO_ERROR(x) \ 47 if (std::error_code ASSERT_NO_ERROR_ec = x) { \ 48 llvm::SmallString<128> MessageStorage; \ 49 llvm::raw_svector_ostream Message(MessageStorage); \ 50 Message << #x ": did not return errc::success.\n" \ 51 << "error number: " << ASSERT_NO_ERROR_ec.value() << "\n" \ 52 << "error message: " << ASSERT_NO_ERROR_ec.message() << "\n"; \ 53 GTEST_FATAL_FAILURE_(MessageStorage.c_str()); \ 54 } else { \ 55 } 56 57 TEST_F(ObjectFileELFTest, SectionsResolveConsistently) { 58 std::string yaml = GetInputFilePath("sections-resolve-consistently.yaml"); 59 llvm::SmallString<128> obj; 60 ASSERT_NO_ERROR(llvm::sys::fs::createTemporaryFile( 61 "sections-resolve-consistently-%%%%%%", "obj", obj)); 62 63 llvm::FileRemover remover(obj); 64 const char *args[] = {YAML2OBJ, yaml.c_str(), nullptr}; 65 llvm::StringRef obj_ref = obj; 66 const llvm::Optional<llvm::StringRef> redirects[] = {llvm::None, obj_ref, 67 llvm::None}; 68 ASSERT_EQ(0, llvm::sys::ExecuteAndWait(YAML2OBJ, args, nullptr, redirects)); 69 uint64_t size; 70 ASSERT_NO_ERROR(llvm::sys::fs::file_size(obj, size)); 71 ASSERT_GT(size, 0u); 72 73 ModuleSpec spec{FileSpec(obj, false)}; 74 spec.GetSymbolFileSpec().SetFile(obj, false); 75 auto module_sp = std::make_shared<Module>(spec); 76 SectionList *list = module_sp->GetSectionList(); 77 ASSERT_NE(nullptr, list); 78 79 auto bss_sp = list->FindSectionByName(ConstString(".bss")); 80 ASSERT_NE(nullptr, bss_sp); 81 auto data_sp = list->FindSectionByName(ConstString(".data")); 82 ASSERT_NE(nullptr, data_sp); 83 auto text_sp = list->FindSectionByName(ConstString(".text")); 84 ASSERT_NE(nullptr, text_sp); 85 86 const Symbol *X = module_sp->FindFirstSymbolWithNameAndType(ConstString("X"), 87 eSymbolTypeAny); 88 ASSERT_NE(nullptr, X); 89 EXPECT_EQ(bss_sp, X->GetAddress().GetSection()); 90 91 const Symbol *Y = module_sp->FindFirstSymbolWithNameAndType(ConstString("Y"), 92 eSymbolTypeAny); 93 ASSERT_NE(nullptr, Y); 94 EXPECT_EQ(data_sp, Y->GetAddress().GetSection()); 95 96 const Symbol *start = module_sp->FindFirstSymbolWithNameAndType( 97 ConstString("_start"), eSymbolTypeAny); 98 ASSERT_NE(nullptr, start); 99 EXPECT_EQ(text_sp, start->GetAddress().GetSection()); 100 } 101 102 // Test that GetModuleSpecifications works on an "atypical" object file which 103 // has section headers right after the ELF header (instead of the more common 104 // layout where the section headers are at the very end of the object file). 105 TEST_F(ObjectFileELFTest, GetModuleSpecifications_EarlySectionHeaders) { 106 std::string SO = GetInputFilePath("early-section-headers.so"); 107 ModuleSpecList Specs; 108 ASSERT_EQ(1u, ObjectFile::GetModuleSpecifications(FileSpec(SO, false), 0, 0, Specs)); 109 ModuleSpec Spec; 110 ASSERT_TRUE(Specs.GetModuleSpecAtIndex(0, Spec)) ; 111 UUID Uuid; 112 Uuid.SetFromStringRef("1b8a73ac238390e32a7ff4ac8ebe4d6a41ecf5c9", 20); 113 EXPECT_EQ(Spec.GetUUID(), Uuid); 114 } 115