diff options
Diffstat (limited to 'externals/breakpad/src/common/linux/dump_symbols_unittest.cc')
| -rw-r--r-- | externals/breakpad/src/common/linux/dump_symbols_unittest.cc | 211 |
1 files changed, 211 insertions, 0 deletions
diff --git a/externals/breakpad/src/common/linux/dump_symbols_unittest.cc b/externals/breakpad/src/common/linux/dump_symbols_unittest.cc new file mode 100644 index 0000000000..55dcdeed8e --- /dev/null +++ b/externals/breakpad/src/common/linux/dump_symbols_unittest.cc @@ -0,0 +1,211 @@ +// Copyright 2011 Google LLC +// +// 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 LLC 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> + +// dump_symbols_unittest.cc: +// Unittests for google_breakpad::DumpSymbols + +#ifdef HAVE_CONFIG_H +#include <config.h> // Must come first +#endif + +#include <elf.h> +#include <link.h> +#include <stdio.h> + +#include <sstream> +#include <vector> + +#include "breakpad_googletest_includes.h" +#include "common/linux/elf_gnu_compat.h" +#include "common/linux/elfutils.h" +#include "common/linux/dump_symbols.h" +#include "common/linux/synth_elf.h" +#include "common/module.h" +#include "common/using_std_string.h" + +namespace google_breakpad { + +bool ReadSymbolDataInternal(const uint8_t* obj_file, + const string& obj_filename, + const string& obj_os, + const std::vector<string>& debug_dir, + const DumpOptions& options, + Module** module); + +using google_breakpad::synth_elf::ELF; +using google_breakpad::synth_elf::Notes; +using google_breakpad::synth_elf::StringTable; +using google_breakpad::synth_elf::SymbolTable; +using google_breakpad::test_assembler::kLittleEndian; +using google_breakpad::test_assembler::Section; +using std::stringstream; +using std::vector; +using ::testing::Test; +using ::testing::Types; + +template<typename ElfClass> +class DumpSymbols : public Test { + public: + void GetElfContents(ELF& elf) { + string contents; + ASSERT_TRUE(elf.GetContents(&contents)); + ASSERT_LT(0U, contents.size()); + + elfdata_v.clear(); + elfdata_v.insert(elfdata_v.begin(), contents.begin(), contents.end()); + elfdata = &elfdata_v[0]; + } + + vector<uint8_t> elfdata_v; + uint8_t* elfdata; +}; + +typedef Types<ElfClass32, ElfClass64> ElfClasses; + +TYPED_TEST_SUITE(DumpSymbols, ElfClasses); + +TYPED_TEST(DumpSymbols, Invalid) { + Elf32_Ehdr header; + memset(&header, 0, sizeof(header)); + Module* module; + DumpOptions options(ALL_SYMBOL_DATA, true, false); + EXPECT_FALSE(ReadSymbolDataInternal(reinterpret_cast<uint8_t*>(&header), + "foo", + "Linux", + vector<string>(), + options, + &module)); +} + +TYPED_TEST(DumpSymbols, SimplePublic) { + ELF elf(TypeParam::kMachine, TypeParam::kClass, kLittleEndian); + // Zero out text section for simplicity. + Section text(kLittleEndian); + text.Append(4096, 0); + elf.AddSection(".text", text, SHT_PROGBITS); + + // Add a public symbol. + StringTable table(kLittleEndian); + SymbolTable syms(kLittleEndian, TypeParam::kAddrSize, table); + syms.AddSymbol("superfunc", + (typename TypeParam::Addr)0x1000, + (typename TypeParam::Addr)0x10, + // ELF32_ST_INFO works for 32-or 64-bit. + ELF32_ST_INFO(STB_GLOBAL, STT_FUNC), + SHN_UNDEF + 1); + int index = elf.AddSection(".dynstr", table, SHT_STRTAB); + elf.AddSection(".dynsym", syms, + SHT_DYNSYM, // type + SHF_ALLOC, // flags + 0, // addr + index, // link + sizeof(typename TypeParam::Sym)); // entsize + + elf.Finish(); + this->GetElfContents(elf); + + Module* module; + DumpOptions options(ALL_SYMBOL_DATA, true, false); + EXPECT_TRUE(ReadSymbolDataInternal(this->elfdata, + "foo", + "Linux", + vector<string>(), + options, + &module)); + + stringstream s; + module->Write(s, ALL_SYMBOL_DATA); + const string expected = + string("MODULE Linux ") + TypeParam::kMachineName + + " 000000000000000000000000000000000 foo\n" + "INFO CODE_ID 00000000000000000000000000000000\n" + "PUBLIC 1000 0 superfunc\n"; + EXPECT_EQ(expected, s.str()); + delete module; +} + +TYPED_TEST(DumpSymbols, SimpleBuildID) { + ELF elf(TypeParam::kMachine, TypeParam::kClass, kLittleEndian); + // Zero out text section for simplicity. + Section text(kLittleEndian); + text.Append(4096, 0); + elf.AddSection(".text", text, SHT_PROGBITS); + + // Add a Build ID + const uint8_t kExpectedIdentifierBytes[] = + {0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, + 0x08, 0x09, 0x0A, 0x0B, 0x0C, 0x0D, 0x0E, 0x0F, + 0x10, 0x11, 0x12, 0x13}; + Notes notes(kLittleEndian); + notes.AddNote(NT_GNU_BUILD_ID, "GNU", kExpectedIdentifierBytes, + sizeof(kExpectedIdentifierBytes)); + elf.AddSection(".note.gnu.build-id", notes, SHT_NOTE); + + // Add a public symbol. + StringTable table(kLittleEndian); + SymbolTable syms(kLittleEndian, TypeParam::kAddrSize, table); + syms.AddSymbol("superfunc", + (typename TypeParam::Addr)0x1000, + (typename TypeParam::Addr)0x10, + // ELF32_ST_INFO works for 32-or 64-bit. + ELF32_ST_INFO(STB_GLOBAL, STT_FUNC), + SHN_UNDEF + 1); + int index = elf.AddSection(".dynstr", table, SHT_STRTAB); + elf.AddSection(".dynsym", syms, + SHT_DYNSYM, // type + SHF_ALLOC, // flags + 0, // addr + index, // link + sizeof(typename TypeParam::Sym)); // entsize + + elf.Finish(); + this->GetElfContents(elf); + + Module* module; + DumpOptions options(ALL_SYMBOL_DATA, true, false); + EXPECT_TRUE(ReadSymbolDataInternal(this->elfdata, + "foo", + "Linux", + vector<string>(), + options, + &module)); + + stringstream s; + module->Write(s, ALL_SYMBOL_DATA); + const string expected = + string("MODULE Linux ") + TypeParam::kMachineName + + " 030201000504070608090A0B0C0D0E0F0 foo\n" + "INFO CODE_ID 000102030405060708090A0B0C0D0E0F10111213\n" + "PUBLIC 1000 0 superfunc\n"; + EXPECT_EQ(expected, s.str()); + delete module; +} + +} // namespace google_breakpad |