/thirdparty/breakpad/common/linux/synth_elf_unittest.cc
http://github.com/tomahawk-player/tomahawk · C++ · 265 lines · 198 code · 26 blank · 41 comment · 1 complexity · f58f407fb64e4c008bc3e969495e82ca MD5 · raw file
- // Copyright (c) 2011 Google Inc.
- // All rights reserved.
- //
- // Redistribution and use in source and binary forms, with or without
- // modification, are permitted provided that the following conditions are
- // met:
- //
- // * Redistributions of source code must retain the above copyright
- // notice, this list of conditions and the following disclaimer.
- // * Redistributions in binary form must reproduce the above
- // copyright notice, this list of conditions and the following disclaimer
- // in the documentation and/or other materials provided with the
- // distribution.
- // * Neither the name of Google Inc. nor the names of its
- // contributors may be used to endorse or promote products derived from
- // this software without specific prior written permission.
- //
- // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
- // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
- // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
- // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
- // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
- // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- // Original author: Ted Mielczarek <ted.mielczarek@gmail.com>
- // synth_elf_unittest.cc:
- // Unittests for google_breakpad::synth_elf::ELF
- #include <elf.h>
- #include "breakpad_googletest_includes.h"
- #include "common/linux/synth_elf.h"
- using google_breakpad::synth_elf::ELF;
- using google_breakpad::synth_elf::StringTable;
- using google_breakpad::synth_elf::SymbolTable;
- using google_breakpad::test_assembler::Endianness;
- using google_breakpad::test_assembler::kBigEndian;
- using google_breakpad::test_assembler::kLittleEndian;
- using google_breakpad::test_assembler::Label;
- using std::string;
- using ::testing::Test;
- class StringTableTest : public Test {
- public:
- StringTableTest() : table(kLittleEndian) {}
- StringTable table;
- };
- TEST_F(StringTableTest, Empty) {
- EXPECT_EQ(1, table.Size());
- string contents;
- ASSERT_TRUE(table.GetContents(&contents));
- const char* kExpectedContents = "\0";
- EXPECT_EQ(0, memcmp(kExpectedContents,
- contents.c_str(),
- contents.size()));
- ASSERT_TRUE(table.empty_string.IsKnownConstant());
- EXPECT_EQ(0, table.empty_string.Value());
- }
- TEST_F(StringTableTest, Basic) {
- const string s1("table fills with strings");
- const string s2("offsets preserved as labels");
- const string s3("verified with tests");
- const char* kExpectedContents =
- "\0table fills with strings\0"
- "offsets preserved as labels\0"
- "verified with tests\0";
- Label l1(table.Add(s1));
- Label l2(table.Add(s2));
- Label l3(table.Add(s3));
- string contents;
- ASSERT_TRUE(table.GetContents(&contents));
- EXPECT_EQ(0, memcmp(kExpectedContents,
- contents.c_str(),
- contents.size()));
- // empty_string is at zero, other strings start at 1.
- ASSERT_TRUE(l1.IsKnownConstant());
- EXPECT_EQ(1, l1.Value());
- // Each string has an extra byte for a trailing null.
- EXPECT_EQ(1 + s1.length() + 1, l2.Value());
- EXPECT_EQ(1 + s1.length() + 1 + s2.length() + 1, l3.Value());
- }
- TEST_F(StringTableTest, Duplicates) {
- const string s1("string 1");
- const string s2("string 2");
- const string s3("");
- const char* kExpectedContents = "\0string 1\0string 2\0";
- Label l1(table.Add(s1));
- Label l2(table.Add(s2));
- // Adding strings twice should return the same Label.
- Label l3(table.Add(s3));
- Label l4(table.Add(s2));
- string contents;
- ASSERT_TRUE(table.GetContents(&contents));
- EXPECT_EQ(0, memcmp(kExpectedContents,
- contents.c_str(),
- contents.size()));
- EXPECT_EQ(0, table.empty_string.Value());
- EXPECT_EQ(table.empty_string.Value(), l3.Value());
- EXPECT_EQ(l2.Value(), l4.Value());
- }
- class SymbolTableTest : public Test {};
- TEST_F(SymbolTableTest, Simple32) {
- StringTable table(kLittleEndian);
- SymbolTable syms(kLittleEndian, 4, table);
- const string kFuncName1 = "superfunc";
- const uint32_t kFuncAddr1 = 0x10001000;
- const uint32_t kFuncSize1 = 0x10;
- const string kFuncName2 = "awesomefunc";
- const uint32_t kFuncAddr2 = 0x20002000;
- const uint32_t kFuncSize2 = 0x2f;
- const string kFuncName3 = "megafunc";
- const uint32_t kFuncAddr3 = 0x30003000;
- const uint32_t kFuncSize3 = 0x3c;
- syms.AddSymbol(kFuncName1, kFuncAddr1, kFuncSize1,
- ELF32_ST_INFO(STB_GLOBAL, STT_FUNC),
- SHN_UNDEF + 1);
- syms.AddSymbol(kFuncName2, kFuncAddr2, kFuncSize2,
- ELF32_ST_INFO(STB_LOCAL, STT_FUNC),
- SHN_UNDEF + 2);
- syms.AddSymbol(kFuncName3, kFuncAddr3, kFuncSize3,
- ELF32_ST_INFO(STB_LOCAL, STT_FUNC),
- SHN_UNDEF + 3);
- const char kExpectedStringTable[] = "\0superfunc\0awesomefunc\0megafunc";
- const size_t kExpectedStringTableSize = sizeof(kExpectedStringTable);
- EXPECT_EQ(kExpectedStringTableSize, table.Size());
- string table_contents;
- table.GetContents(&table_contents);
- EXPECT_EQ(0, memcmp(kExpectedStringTable,
- table_contents.c_str(),
- table_contents.size()));
- const uint8_t kExpectedSymbolContents[] = {
- // Symbol 1
- 0x01, 0x00, 0x00, 0x00, // name
- 0x00, 0x10, 0x00, 0x10, // value
- 0x10, 0x00, 0x00, 0x00, // size
- ELF32_ST_INFO(STB_GLOBAL, STT_FUNC), // info
- 0x00, // other
- 0x01, 0x00, // shndx
- // Symbol 2
- 0x0B, 0x00, 0x00, 0x00, // name
- 0x00, 0x20, 0x00, 0x20, // value
- 0x2f, 0x00, 0x00, 0x00, // size
- ELF32_ST_INFO(STB_LOCAL, STT_FUNC), // info
- 0x00, // other
- 0x02, 0x00, // shndx
- // Symbol 3
- 0x17, 0x00, 0x00, 0x00, // name
- 0x00, 0x30, 0x00, 0x30, // value
- 0x3c, 0x00, 0x00, 0x00, // size
- ELF32_ST_INFO(STB_LOCAL, STT_FUNC), // info
- 0x00, // other
- 0x03, 0x00, // shndx
- };
- const size_t kExpectedSymbolSize = sizeof(kExpectedSymbolContents);
- EXPECT_EQ(kExpectedSymbolSize, syms.Size());
- string symbol_contents;
- syms.GetContents(&symbol_contents);
- EXPECT_EQ(0, memcmp(kExpectedSymbolContents,
- symbol_contents.c_str(),
- symbol_contents.size()));
- }
- class BasicElf : public Test {};
- // Doesn't seem worthwhile writing the tests to be endian-independent
- // when they're unlikely to ever be run on big-endian systems.
- #if defined(__i386__) || defined(__x86_64__)
- TEST_F(BasicElf, EmptyLE32) {
- const size_t kStringTableSize = sizeof("\0.shstrtab");
- const size_t kStringTableAlign = 4 - kStringTableSize % 4;
- const size_t kExpectedSize = sizeof(Elf32_Ehdr) +
- // Two sections, SHT_NULL + the section header string table.
- 2 * sizeof(Elf32_Shdr) +
- kStringTableSize + kStringTableAlign;
- ELF elf(EM_386, ELFCLASS32, kLittleEndian);
- elf.Finish();
- EXPECT_EQ(kExpectedSize, elf.Size());
- string contents;
- ASSERT_TRUE(elf.GetContents(&contents));
- ASSERT_EQ(kExpectedSize, contents.size());
- const Elf32_Ehdr* header =
- reinterpret_cast<const Elf32_Ehdr*>(contents.data());
- const uint8_t kIdent[] = {
- ELFMAG0, ELFMAG1, ELFMAG2, ELFMAG3,
- ELFCLASS32, ELFDATA2LSB, EV_CURRENT, ELFOSABI_SYSV,
- 0, 0, 0, 0, 0, 0, 0, 0
- };
- EXPECT_EQ(0, memcmp(kIdent, header->e_ident, sizeof(kIdent)));
- EXPECT_EQ(ET_EXEC, header->e_type);
- EXPECT_EQ(EM_386, header->e_machine);
- EXPECT_EQ(EV_CURRENT, header->e_version);
- EXPECT_EQ(0, header->e_entry);
- EXPECT_EQ(0, header->e_phoff);
- EXPECT_EQ(sizeof(Elf32_Ehdr) + kStringTableSize + kStringTableAlign,
- header->e_shoff);
- EXPECT_EQ(0, header->e_flags);
- EXPECT_EQ(sizeof(Elf32_Ehdr), header->e_ehsize);
- EXPECT_EQ(sizeof(Elf32_Phdr), header->e_phentsize);
- EXPECT_EQ(0, header->e_phnum);
- EXPECT_EQ(sizeof(Elf32_Shdr), header->e_shentsize);
- EXPECT_EQ(2, header->e_shnum);
- EXPECT_EQ(1, header->e_shstrndx);
- }
- TEST_F(BasicElf, EmptyLE64) {
- const size_t kStringTableSize = sizeof("\0.shstrtab");
- const size_t kStringTableAlign = 4 - kStringTableSize % 4;
- const size_t kExpectedSize = sizeof(Elf64_Ehdr) +
- // Two sections, SHT_NULL + the section header string table.
- 2 * sizeof(Elf64_Shdr) +
- kStringTableSize + kStringTableAlign;
- ELF elf(EM_X86_64, ELFCLASS64, kLittleEndian);
- elf.Finish();
- EXPECT_EQ(kExpectedSize, elf.Size());
- string contents;
- ASSERT_TRUE(elf.GetContents(&contents));
- ASSERT_EQ(kExpectedSize, contents.size());
- const Elf64_Ehdr* header =
- reinterpret_cast<const Elf64_Ehdr*>(contents.data());
- const uint8_t kIdent[] = {
- ELFMAG0, ELFMAG1, ELFMAG2, ELFMAG3,
- ELFCLASS64, ELFDATA2LSB, EV_CURRENT, ELFOSABI_SYSV,
- 0, 0, 0, 0, 0, 0, 0, 0
- };
- EXPECT_EQ(0, memcmp(kIdent, header->e_ident, sizeof(kIdent)));
- EXPECT_EQ(ET_EXEC, header->e_type);
- EXPECT_EQ(EM_X86_64, header->e_machine);
- EXPECT_EQ(EV_CURRENT, header->e_version);
- EXPECT_EQ(0, header->e_entry);
- EXPECT_EQ(0, header->e_phoff);
- EXPECT_EQ(sizeof(Elf64_Ehdr) + kStringTableSize + kStringTableAlign,
- header->e_shoff);
- EXPECT_EQ(0, header->e_flags);
- EXPECT_EQ(sizeof(Elf64_Ehdr), header->e_ehsize);
- EXPECT_EQ(sizeof(Elf64_Phdr), header->e_phentsize);
- EXPECT_EQ(0, header->e_phnum);
- EXPECT_EQ(sizeof(Elf64_Shdr), header->e_shentsize);
- EXPECT_EQ(2, header->e_shnum);
- EXPECT_EQ(1, header->e_shstrndx);
- }
- #endif // defined(__i386__) || defined(__x86_64__)