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Diffstat (limited to 'src/common/linux/dump_symbols_unittest.cc')
| -rw-r--r-- | src/common/linux/dump_symbols_unittest.cc | 162 |
1 files changed, 162 insertions, 0 deletions
diff --git a/src/common/linux/dump_symbols_unittest.cc b/src/common/linux/dump_symbols_unittest.cc new file mode 100644 index 00000000..06263076 --- /dev/null +++ b/src/common/linux/dump_symbols_unittest.cc @@ -0,0 +1,162 @@ +// 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> + +// dump_symbols_unittest.cc: +// Unittests for google_breakpad::DumpSymbols + +#include <elf.h> +#include <link.h> +#include <stdio.h> + +#include <sstream> +#include <string> +#include <vector> + +#include "breakpad_googletest_includes.h" +#include "common/linux/synth_elf.h" + +namespace google_breakpad { +bool WriteSymbolFileInternal(uint8_t* obj_file, + const std::string &obj_filename, + const std::string &debug_dir, + std::ostream &sym_stream); +} + +using google_breakpad::synth_elf::ELF; +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 google_breakpad::WriteSymbolFileInternal; +using std::string; +using std::stringstream; +using std::vector; +using ::testing::Test; + +class DumpSymbols : public Test { +public: + void GetElfContents(ELF& elf) { + string contents; + ASSERT_TRUE(elf.GetContents(&contents)); + ASSERT_LT(0, 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; +}; + +TEST_F(DumpSymbols, Invalid) { + Elf32_Ehdr header; + memset(&header, 0, sizeof(header)); + stringstream s; + EXPECT_FALSE(WriteSymbolFileInternal(reinterpret_cast<uint8_t*>(&header), + "foo", + "", + s)); +} + +// TODO(ted): Fix the dump_symbols code to deal with cross-word-size +// ELF files. +#if __ELF_NATIVE_CLASS == 32 +TEST_F(DumpSymbols, SimplePublic32) { + ELF elf(EM_386, ELFCLASS32, 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, 4, table); + syms.AddSymbol("superfunc", (uint32_t)0x1000, (uint32_t)0x10, + 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(Elf32_Sym)); // entsize + + elf.Finish(); + GetElfContents(elf); + + stringstream s; + ASSERT_TRUE(WriteSymbolFileInternal(elfdata, + "foo", + "", + s)); + EXPECT_EQ("MODULE Linux x86 000000000000000000000000000000000 foo\n" + "PUBLIC 1000 0 superfunc\n", + s.str()); +} +#endif + +#if __ELF_NATIVE_CLASS == 64 +TEST_F(DumpSymbols, SimplePublic64) { + ELF elf(EM_X86_64, ELFCLASS64, 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, 8, table); + syms.AddSymbol("superfunc", (uint64_t)0x1000, (uint64_t)0x10, + ELF64_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(Elf64_Sym)); // entsize + + elf.Finish(); + GetElfContents(elf); + + stringstream s; + ASSERT_TRUE(WriteSymbolFileInternal(elfdata, + "foo", + "", + s)); + EXPECT_EQ("MODULE Linux x86_64 000000000000000000000000000000000 foo\n" + "PUBLIC 1000 0 superfunc\n", + s.str()); +} +#endif |