103 lines · cpp
1//===- DWARFListTableTest.cpp ---------------------------------------------===//2//3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.4// See https://llvm.org/LICENSE.txt for license information.5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception6//7//===----------------------------------------------------------------------===//8 9#include "llvm/DebugInfo/DWARF/DWARFListTable.h"10#include "llvm/Testing/Support/Error.h"11#include "gtest/gtest.h"12 13using namespace llvm;14 15namespace {16 17TEST(DWARFListTableHeader, TruncatedLength) {18 static const char SecData[] = "\x33\x22\x11"; // Truncated DWARF32 length19 DWARFDataExtractor Extractor(StringRef(SecData, sizeof(SecData) - 1),20 /*isLittleEndian=*/true,21 /*AddrSize=*/4);22 DWARFListTableHeader Header(/*SectionName=*/".debug_rnglists",23 /*ListTypeString=*/"range");24 uint64_t Offset = 0;25 EXPECT_THAT_ERROR(26 Header.extract(Extractor, &Offset),27 FailedWithMessage(28 "parsing .debug_rnglists table at offset 0x0: unexpected end of data "29 "at offset 0x3 while reading [0x0, 0x4)"));30 // length() is expected to return 0 to indicate that the unit length field31 // can not be parsed and so we can not, for example, skip the current set32 // to continue parsing from the next one.33 EXPECT_EQ(Header.length(), 0u);34}35 36TEST(DWARFListTableHeader, TruncatedLengthDWARF64) {37 static const char SecData[] =38 "\xff\xff\xff\xff" // DWARF64 mark39 "\x55\x44\x33\x22\x11"; // Truncated DWARF64 length40 DWARFDataExtractor Extractor(StringRef(SecData, sizeof(SecData) - 1),41 /*isLittleEndian=*/true,42 /*AddrSize=*/4);43 DWARFListTableHeader Header(/*SectionName=*/".debug_rnglists",44 /*ListTypeString=*/"range");45 uint64_t Offset = 0;46 EXPECT_THAT_ERROR(47 Header.extract(Extractor, &Offset),48 FailedWithMessage(49 "parsing .debug_rnglists table at offset 0x0: unexpected end of data "50 "at offset 0x9 while reading [0x4, 0xc)"));51 // length() is expected to return 0 to indicate that the unit length field52 // can not be parsed and so we can not, for example, skip the current set53 // to continue parsing from the next one.54 EXPECT_EQ(Header.length(), 0u);55}56 57TEST(DWARFListTableHeader, TruncatedHeader) {58 static const char SecData[] = "\x02\x00\x00\x00" // Length59 "\x05\x00"; // Version60 DWARFDataExtractor Extractor(StringRef(SecData, sizeof(SecData) - 1),61 /*isLittleEndian=*/true,62 /*AddrSize=*/4);63 DWARFListTableHeader Header(/*SectionName=*/".debug_rnglists",64 /*ListTypeString=*/"range");65 uint64_t Offset = 0;66 EXPECT_THAT_ERROR(67 Header.extract(Extractor, &Offset),68 FailedWithMessage(".debug_rnglists table at offset 0x0 has too small "69 "length (0x6) to contain a complete header"));70 // length() is expected to return the full length of the set if the unit71 // length field is read, even if an error occurred during the parsing,72 // to allow skipping the current set and continue parsing from the next one.73 EXPECT_EQ(Header.length(), 6u);74}75 76TEST(DWARFListTableHeader, OffsetEntryCount) {77 static const char SecData[] = "\x10\x00\x00\x00" // Length78 "\x05\x00" // Version79 "\x08" // Address size80 "\x00" // Segment selector size81 "\x01\x00\x00\x00" // Offset entry count82 "\x04\x00\x00\x00" // offset[0]83 "\x04" // DW_RLE_offset_pair84 "\x01" // ULEB128 starting offset85 "\x02" // ULEB128 ending offset86 "\x00"; // DW_RLE_end_of_list87 DWARFDataExtractor Extractor(StringRef(SecData, sizeof(SecData) - 1),88 /*isLittleEndian=*/true,89 /*AddrSize=*/4);90 DWARFListTableHeader Header(/*SectionName=*/".debug_rnglists",91 /*ListTypeString=*/"range");92 uint64_t Offset = 0;93 EXPECT_FALSE(!!Header.extract(Extractor, &Offset));94 std::optional<uint64_t> Offset0 = Header.getOffsetEntry(Extractor, 0);95 EXPECT_TRUE(!!Offset0);96 EXPECT_EQ(Offset0, uint64_t(4));97 std::optional<uint64_t> Offset1 = Header.getOffsetEntry(Extractor, 1);98 EXPECT_FALSE(!!Offset1);99 EXPECT_EQ(Header.length(), sizeof(SecData) - 1);100}101 102} // end anonymous namespace103