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8e4afeec9b
Currently we don't support multiple SHT_SYMTAB_SHNDX sections and the DT_SYMTAB_SHNDX tag currently. This patch implements it and fixes the https://bugs.llvm.org/show_bug.cgi?id=43991. I had to introduce the `struct DataRegion` to ELF.h, it is used to represent a region that might have no known size. It is needed, because we don't know the size of the extended section indices table when it is located via DT_SYMTAB_SHNDX. In this case we still want to validate that we don't read past the end of the file. Differential revision: https://reviews.llvm.org/D92923
90 lines
4.1 KiB
C++
90 lines
4.1 KiB
C++
//===- ELFTest.cpp - Tests for ELF.cpp ------------------------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#include "llvm/Object/ELF.h"
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#include "llvm/Testing/Support/Error.h"
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#include "gtest/gtest.h"
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using namespace llvm;
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using namespace llvm::object;
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using namespace llvm::ELF;
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TEST(ELFTest, getELFRelocationTypeNameForVE) {
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EXPECT_EQ("R_VE_NONE", getELFRelocationTypeName(EM_VE, R_VE_NONE));
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EXPECT_EQ("R_VE_REFLONG", getELFRelocationTypeName(EM_VE, R_VE_REFLONG));
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EXPECT_EQ("R_VE_REFQUAD", getELFRelocationTypeName(EM_VE, R_VE_REFQUAD));
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EXPECT_EQ("R_VE_SREL32", getELFRelocationTypeName(EM_VE, R_VE_SREL32));
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EXPECT_EQ("R_VE_HI32", getELFRelocationTypeName(EM_VE, R_VE_HI32));
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EXPECT_EQ("R_VE_LO32", getELFRelocationTypeName(EM_VE, R_VE_LO32));
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EXPECT_EQ("R_VE_PC_HI32", getELFRelocationTypeName(EM_VE, R_VE_PC_HI32));
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EXPECT_EQ("R_VE_PC_LO32", getELFRelocationTypeName(EM_VE, R_VE_PC_LO32));
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EXPECT_EQ("R_VE_GOT32", getELFRelocationTypeName(EM_VE, R_VE_GOT32));
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EXPECT_EQ("R_VE_GOT_HI32", getELFRelocationTypeName(EM_VE, R_VE_GOT_HI32));
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EXPECT_EQ("R_VE_GOT_LO32", getELFRelocationTypeName(EM_VE, R_VE_GOT_LO32));
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EXPECT_EQ("R_VE_GOTOFF32", getELFRelocationTypeName(EM_VE, R_VE_GOTOFF32));
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EXPECT_EQ("R_VE_GOTOFF_HI32",
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getELFRelocationTypeName(EM_VE, R_VE_GOTOFF_HI32));
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EXPECT_EQ("R_VE_GOTOFF_LO32",
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getELFRelocationTypeName(EM_VE, R_VE_GOTOFF_LO32));
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EXPECT_EQ("R_VE_PLT32", getELFRelocationTypeName(EM_VE, R_VE_PLT32));
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EXPECT_EQ("R_VE_PLT_HI32", getELFRelocationTypeName(EM_VE, R_VE_PLT_HI32));
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EXPECT_EQ("R_VE_PLT_LO32", getELFRelocationTypeName(EM_VE, R_VE_PLT_LO32));
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EXPECT_EQ("R_VE_RELATIVE", getELFRelocationTypeName(EM_VE, R_VE_RELATIVE));
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EXPECT_EQ("R_VE_GLOB_DAT", getELFRelocationTypeName(EM_VE, R_VE_GLOB_DAT));
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EXPECT_EQ("R_VE_JUMP_SLOT", getELFRelocationTypeName(EM_VE, R_VE_JUMP_SLOT));
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EXPECT_EQ("R_VE_COPY", getELFRelocationTypeName(EM_VE, R_VE_COPY));
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EXPECT_EQ("R_VE_DTPMOD64", getELFRelocationTypeName(EM_VE, R_VE_DTPMOD64));
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EXPECT_EQ("R_VE_DTPOFF64", getELFRelocationTypeName(EM_VE, R_VE_DTPOFF64));
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EXPECT_EQ("R_VE_TLS_GD_HI32",
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getELFRelocationTypeName(EM_VE, R_VE_TLS_GD_HI32));
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EXPECT_EQ("R_VE_TLS_GD_LO32",
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getELFRelocationTypeName(EM_VE, R_VE_TLS_GD_LO32));
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EXPECT_EQ("R_VE_TPOFF_HI32",
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getELFRelocationTypeName(EM_VE, R_VE_TPOFF_HI32));
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EXPECT_EQ("R_VE_TPOFF_LO32",
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getELFRelocationTypeName(EM_VE, R_VE_TPOFF_LO32));
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EXPECT_EQ("R_VE_CALL_HI32", getELFRelocationTypeName(EM_VE, R_VE_CALL_HI32));
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EXPECT_EQ("R_VE_CALL_LO32", getELFRelocationTypeName(EM_VE, R_VE_CALL_LO32));
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}
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TEST(ELFTest, getELFRelativeRelocationType) {
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EXPECT_EQ(0U, getELFRelativeRelocationType(EM_VE));
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}
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// This is a test for the DataRegion helper struct, defined in ELF.h header.
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TEST(ELFTest, DataRegionTest) {
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std::vector<uint8_t> Data = {0, 1, 2};
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// Used to check that the operator[] works properly.
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auto CheckOperator = [&](DataRegion<uint8_t> &R) {
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for (size_t I = 0, E = Data.size(); I != E; ++I) {
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Expected<uint8_t> ValOrErr = R[I];
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ASSERT_THAT_EXPECTED(ValOrErr, Succeeded());
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EXPECT_EQ(*ValOrErr, I);
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}
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};
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// Check we can use the constructor that takes an ArrayRef<T>.
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DataRegion<uint8_t> Region(Data);
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CheckOperator(Region);
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const char *ErrMsg1 =
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"the index is greater than or equal to the number of entries (3)";
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EXPECT_THAT_ERROR(Region[3].takeError(), FailedWithMessage(ErrMsg1));
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EXPECT_THAT_ERROR(Region[4].takeError(), FailedWithMessage(ErrMsg1));
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// Check we can use the constructor that takes the data begin and the
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// data end pointers.
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Region = {Data.data(), Data.data() + Data.size()};
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CheckOperator(Region);
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const char *ErrMsg2 = "can't read past the end of the file";
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EXPECT_THAT_ERROR(Region[3].takeError(), FailedWithMessage(ErrMsg2));
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EXPECT_THAT_ERROR(Region[4].takeError(), FailedWithMessage(ErrMsg2));
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}
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