blob: c15b8dff366a5d956a3176b8e0a5d28abf14e3fc [file] [log] [blame]
// Copyright (c) 2011 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "courgette/disassembler_elf_32_x86.h"
#include <stddef.h>
#include <stdint.h>
#include <algorithm>
#include <string>
#include "base/memory/scoped_ptr.h"
#include "courgette/assembly_program.h"
#include "courgette/base_test_unittest.h"
#include "courgette/image_utils.h"
namespace courgette {
namespace {
class DisassemblerElf32X86Test : public BaseTest {
void TestExe(const char* file_name,
size_t expected_abs_count,
size_t expected_rel_count) const;
void DisassemblerElf32X86Test::TestExe(const char* file_name,
size_t expected_abs_count,
size_t expected_rel_count) const {
using TypedRVA = DisassemblerElf32::TypedRVA;
std::string file1 = FileContents(file_name);
scoped_ptr<DisassemblerElf32X86> disassembler(
new DisassemblerElf32X86(file1.c_str(), file1.length()));
bool can_parse_header = disassembler->ParseHeader();
// The length of the disassembled value will be slightly smaller than the
// real file, since trailing debug info is not included
EXPECT_EQ(file1.length(), disassembler->length());
const uint8_t* offset_p = disassembler->FileOffsetToPointer(0);
EXPECT_EQ(reinterpret_cast<const void*>(file1.c_str()),
reinterpret_cast<const void*>(offset_p));
EXPECT_EQ(0x7F, offset_p[0]);
EXPECT_EQ('E', offset_p[1]);
EXPECT_EQ('L', offset_p[2]);
EXPECT_EQ('F', offset_p[3]);
scoped_ptr<AssemblyProgram> program(new AssemblyProgram(EXE_ELF_32_X86));
const std::vector<RVA>& abs32_list = disassembler->Abs32Locations();
// Flatten the list typed rel32 to a list of rel32 RVAs.
std::vector<RVA> rel32_list;
for (TypedRVA* typed_rel32 : disassembler->Rel32Locations())
EXPECT_EQ(expected_abs_count, abs32_list.size());
EXPECT_EQ(expected_rel_count, rel32_list.size());
EXPECT_TRUE(std::is_sorted(abs32_list.begin(), abs32_list.end()));
EXPECT_TRUE(std::is_sorted(rel32_list.begin(), rel32_list.end()));
// Verify that rel32 RVAs do not overlap with abs32 RVAs.
// TODO(huangs): Fix this to account for RVA's 4-byte width.
bool found_match = false;
std::vector<RVA>::const_iterator abs32_it = abs32_list.begin();
std::vector<RVA>::const_iterator rel32_it = rel32_list.begin();
while (abs32_it != abs32_list.end() && rel32_it != rel32_list.end()) {
if (*abs32_it < *rel32_it) {
} else if (*abs32_it > *rel32_it) {
} else {
found_match = true;
} // namespace
TEST_F(DisassemblerElf32X86Test, All) {
TestExe("elf-32-1", 200, 3442);
} // namespace courgette