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// 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,
bool cfi,
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",
"",
true,
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",
"",
true,
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",
"",
true,
s));
EXPECT_EQ("MODULE Linux x86_64 000000000000000000000000000000000 foo\n"
"PUBLIC 1000 0 superfunc\n",
s.str());
}
#endif
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