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// Copyright (c) 2020, 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: Sterling Augustine <saugustine@google.com>
// dwarf2reader_lineinfo_unittest.cc: Unit tests for dwarf2reader::LineInfo
#include <stdint.h>
#include <stdlib.h>
#include <string>
#include <vector>
#include "breakpad_googletest_includes.h"
#include "common/dwarf/bytereader.h"
#include "common/dwarf/dwarf2reader.h"
#include "google_breakpad/common/breakpad_types.h"
using std::vector;
using testing::InSequence;
using testing::Return;
using testing::Sequence;
using testing::Test;
using testing::_;
using namespace dwarf2reader;
namespace {
const uint8_t dwarf5_line_program[] = {
0x40, 0x0, 0x0, 0x0, // unit_length (end - begin)
// begin
0x05, 0x0, // version
0x8, // address_size
0x0, // segment_selector_size
0x26, 0x0, 0x0, 0x0, // header_length (end_header_end - begin_header)
// begin_header:
0x1, // minimum_instruction_length
0x1, // maximum_operations_per_instruction
0x1, // default_is_stmt
0xfb, // line_base
0xe, // line_range
0xd, // opcode_base and lengths
0x0, 0x1, 0x1, 0x1, 0x1, 0x0, 0x0, 0x0, 0x1, 0x0, 0x0, 0x1,
0x1, // directory entry format count
DW_LNCT_path, DW_FORM_strp,
0x1, // directories count
0x1, 0x0, 0x0, 0x0, // offset into .debug_line_str
0x2, // file_name_entry_format_count
DW_LNCT_directory_index, DW_FORM_data1,
DW_LNCT_path, DW_FORM_line_strp,
0x1, // filename count
0x0, // directory index
0x1, 0x0, 0x0, 0x0, // offset into .debug_str
// end_header
DW_LNS_set_file, 0x0,
// set address to 0x0
0x0, 0x9, 0x2, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0,
// Advance Address by 0 and line by 3
0x15,
// Advance PC by 1
0x2, 0x1,
0x0,
DW_LNE_end_sequence,
DW_LNE_end_sequence,
// end
};
const uint8_t dwarf4_line_program[] = {
0x37, 0x0, 0x0, 0x0, // unit_length (end - begin)
// begin
0x04, 0x0, // version
0x1d, 0x0, 0x0, 0x0, // header_length (end_header - begin_header)
// begin_header:
0x1, // minimum_instruction_length
0x1, // maximum_operations_per_instruction
0x1, // default_is_stmt
0xfb, // line_base
0xe, // line_range
0xd, // opcode_base and lengths
0x0, 0x1, 0x1, 0x1, 0x1, 0x0, 0x0, 0x0, 0x1, 0x0, 0x0, 0x1,
'/', 'a', '\0', // directory entry 1 (zeroth entry implied)
'\0', // end of directory table
'b', '/', 'c', '\0', // file entry 1 (zeroth entry implied)
0, // file 1 directory
0, // file 1 modification time
0, // file 1 length
'\0', // end of file table
// end_header
DW_LNS_set_file, 0x0,
// set address to 0x0
0x0, 0x9, 0x2, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0,
// Advance Address by 0 and line by 3
0x15,
// Advance PC by 1
0x2, 0x1,
0x0,
DW_LNE_end_sequence,
DW_LNE_end_sequence,
// end
};
class MockLineInfoHandler: public LineInfoHandler {
public:
MOCK_METHOD(void, DefineDir, (const string&, uint32_t dir_num), (override));
MOCK_METHOD(void, DefineFile, (const string& name, int32_t file_num,
uint32_t dir_num, uint64_t mod_time,
uint64_t length), (override));
MOCK_METHOD(void, AddLine, (uint64_t address, uint64_t length,
uint32_t file_num, uint32_t line_num,
uint32_t column_num), (override));
};
const uint8_t string_section[] = {'x', '/', 'a', '\0'};
const uint8_t line_string_section[] = {'x', 'b', '/', 'c', '\0' };
struct LineProgram: public Test {
MockLineInfoHandler handler_;
};
TEST_F(LineProgram, ReadLinesDwarf5) {
ByteReader byte_reader(ENDIANNESS_LITTLE);
// LineTables don't specify the offset size like Compilation Units do.
byte_reader.SetOffsetSize(4);
LineInfo line_reader(dwarf5_line_program,
sizeof(dwarf5_line_program),
&byte_reader,
string_section,
sizeof(string_section),
line_string_section,
sizeof(line_string_section),
&handler_);
EXPECT_CALL(handler_, DefineDir("/a", 0)).Times(1);
EXPECT_CALL(handler_, DefineFile("b/c", 0, 0, 0, 0)).Times(1);
EXPECT_CALL(handler_, AddLine(0, 1, 0, 4, 0)).Times(1);
EXPECT_EQ(line_reader.Start(), sizeof(dwarf5_line_program));
}
TEST_F(LineProgram, ReadLinesDwarf4) {
ByteReader byte_reader(ENDIANNESS_LITTLE);
// LineTables don't specify the offset size like Compilation Units do.
byte_reader.SetOffsetSize(4);
// dwarf4 line info headers don't encode the address size.
byte_reader.SetAddressSize(8);
LineInfo line_reader(dwarf4_line_program,
sizeof(dwarf5_line_program),
&byte_reader,
// dwarf4 line tables can't access the string sections
// so pass values likely to make assertions fail if
// the code uses them improperly.
nullptr, 0, nullptr, 0,
&handler_);
EXPECT_CALL(handler_, DefineDir("", 0)).Times(1);
EXPECT_CALL(handler_, DefineDir("/a", 1)).Times(1);
EXPECT_CALL(handler_, DefineFile("", 0, 0, 0, 0)).Times(1);
EXPECT_CALL(handler_, DefineFile("b/c", 1, 0, 0, 0)).Times(1);
EXPECT_CALL(handler_, AddLine(0, 1, 0, 4, 0)).Times(1);
EXPECT_EQ(line_reader.Start(), sizeof(dwarf4_line_program));
}
} // anonymous namespace
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