1 #include "bolt/Core/BinaryContext.h"
2 #include "llvm/BinaryFormat/ELF.h"
3 #include "llvm/DebugInfo/DWARF/DWARFContext.h"
4 #include "llvm/Object/ELFObjectFile.h"
5 #include "llvm/Support/TargetSelect.h"
6 #include "gtest/gtest.h"
7
8 using namespace llvm;
9 using namespace llvm::object;
10 using namespace llvm::ELF;
11 using namespace bolt;
12
13 namespace {
14 struct BinaryContextTester : public testing::TestWithParam<Triple::ArchType> {
SetUp__anon935258540111::BinaryContextTester15 void SetUp() override {
16 initalizeLLVM();
17 prepareElf();
18 initializeBOLT();
19 }
20
21 protected:
initalizeLLVM__anon935258540111::BinaryContextTester22 void initalizeLLVM() {
23 llvm::InitializeAllTargetInfos();
24 llvm::InitializeAllTargetMCs();
25 llvm::InitializeAllAsmParsers();
26 llvm::InitializeAllDisassemblers();
27 llvm::InitializeAllTargets();
28 llvm::InitializeAllAsmPrinters();
29 }
30
prepareElf__anon935258540111::BinaryContextTester31 void prepareElf() {
32 memcpy(ElfBuf, "\177ELF", 4);
33 ELF64LE::Ehdr *EHdr = reinterpret_cast<typename ELF64LE::Ehdr *>(ElfBuf);
34 EHdr->e_ident[llvm::ELF::EI_CLASS] = llvm::ELF::ELFCLASS64;
35 EHdr->e_ident[llvm::ELF::EI_DATA] = llvm::ELF::ELFDATA2LSB;
36 EHdr->e_machine = GetParam() == Triple::aarch64 ? EM_AARCH64 : EM_X86_64;
37 MemoryBufferRef Source(StringRef(ElfBuf, sizeof(ElfBuf)), "ELF");
38 ObjFile = cantFail(ObjectFile::createObjectFile(Source));
39 }
40
initializeBOLT__anon935258540111::BinaryContextTester41 void initializeBOLT() {
42 BC = cantFail(BinaryContext::createBinaryContext(
43 ObjFile.get(), true, DWARFContext::create(*ObjFile.get())));
44 ASSERT_FALSE(!BC);
45 }
46
47 char ElfBuf[sizeof(typename ELF64LE::Ehdr)] = {};
48 std::unique_ptr<ObjectFile> ObjFile;
49 std::unique_ptr<BinaryContext> BC;
50 };
51 } // namespace
52
53 #ifdef X86_AVAILABLE
54
55 INSTANTIATE_TEST_SUITE_P(X86, BinaryContextTester,
56 ::testing::Values(Triple::x86_64));
57
58 #endif
59
60 #ifdef AARCH64_AVAILABLE
61
62 INSTANTIATE_TEST_SUITE_P(AArch64, BinaryContextTester,
63 ::testing::Values(Triple::aarch64));
64
65 #endif
66
TEST_P(BinaryContextTester,BaseAddress)67 TEST_P(BinaryContextTester, BaseAddress) {
68 // Check that base address calculation is correct for a binary with the
69 // following segment layout:
70 BC->SegmentMapInfo[0] = SegmentInfo{0, 0x10e8c2b4, 0, 0x10e8c2b4, 0x1000};
71 BC->SegmentMapInfo[0x10e8d2b4] =
72 SegmentInfo{0x10e8d2b4, 0x3952faec, 0x10e8c2b4, 0x3952faec, 0x1000};
73 BC->SegmentMapInfo[0x4a3bddc0] =
74 SegmentInfo{0x4a3bddc0, 0x148e828, 0x4a3bbdc0, 0x148e828, 0x1000};
75 BC->SegmentMapInfo[0x4b84d5e8] =
76 SegmentInfo{0x4b84d5e8, 0x294f830, 0x4b84a5e8, 0x3d3820, 0x1000};
77
78 Optional<uint64_t> BaseAddress =
79 BC->getBaseAddressForMapping(0x7f13f5556000, 0x10e8c000);
80 ASSERT_TRUE(BaseAddress.hasValue());
81 ASSERT_EQ(*BaseAddress, 0x7f13e46c9000ULL);
82
83 BaseAddress = BC->getBaseAddressForMapping(0x7f13f5556000, 0x137a000);
84 ASSERT_FALSE(BaseAddress.hasValue());
85 }
86