1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/toolkit/crashreporter/google-breakpad/src/common/dwarf/dwarf2reader_test_common.h Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,149 @@
1.4 +// -*- mode: c++ -*-
1.5 +
1.6 +// Copyright (c) 2012, Google Inc.
1.7 +// All rights reserved.
1.8 +//
1.9 +// Redistribution and use in source and binary forms, with or without
1.10 +// modification, are permitted provided that the following conditions are
1.11 +// met:
1.12 +//
1.13 +// * Redistributions of source code must retain the above copyright
1.14 +// notice, this list of conditions and the following disclaimer.
1.15 +// * Redistributions in binary form must reproduce the above
1.16 +// copyright notice, this list of conditions and the following disclaimer
1.17 +// in the documentation and/or other materials provided with the
1.18 +// distribution.
1.19 +// * Neither the name of Google Inc. nor the names of its
1.20 +// contributors may be used to endorse or promote products derived from
1.21 +// this software without specific prior written permission.
1.22 +//
1.23 +// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
1.24 +// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
1.25 +// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
1.26 +// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
1.27 +// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
1.28 +// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
1.29 +// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
1.30 +// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
1.31 +// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
1.32 +// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
1.33 +// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
1.34 +
1.35 +// Original author: Jim Blandy <jimb@mozilla.com> <jimb@red-bean.com>
1.36 +
1.37 +// dwarf2reader_test_common.h: Define TestCompilationUnit and
1.38 +// TestAbbrevTable, classes for creating properly (and improperly)
1.39 +// formatted DWARF compilation unit data for unit tests.
1.40 +
1.41 +#ifndef COMMON_DWARF_DWARF2READER_TEST_COMMON_H__
1.42 +#define COMMON_DWARF_DWARF2READER_TEST_COMMON_H__
1.43 +
1.44 +#include "common/test_assembler.h"
1.45 +#include "common/dwarf/dwarf2enums.h"
1.46 +
1.47 +// A subclass of test_assembler::Section, specialized for constructing
1.48 +// DWARF compilation units.
1.49 +class TestCompilationUnit: public google_breakpad::test_assembler::Section {
1.50 + public:
1.51 + typedef dwarf2reader::DwarfTag DwarfTag;
1.52 + typedef dwarf2reader::DwarfAttribute DwarfAttribute;
1.53 + typedef dwarf2reader::DwarfForm DwarfForm;
1.54 + typedef google_breakpad::test_assembler::Label Label;
1.55 +
1.56 + // Set the section's DWARF format size (the 32-bit DWARF format or the
1.57 + // 64-bit DWARF format, for lengths and section offsets --- not the
1.58 + // address size) to format_size.
1.59 + void set_format_size(size_t format_size) {
1.60 + assert(format_size == 4 || format_size == 8);
1.61 + format_size_ = format_size;
1.62 + }
1.63 +
1.64 + // Append a DWARF section offset value, of the appropriate size for this
1.65 + // compilation unit.
1.66 + template<typename T>
1.67 + void SectionOffset(T offset) {
1.68 + if (format_size_ == 4)
1.69 + D32(offset);
1.70 + else
1.71 + D64(offset);
1.72 + }
1.73 +
1.74 + // Append a DWARF compilation unit header to the section, with the given
1.75 + // DWARF version, abbrev table offset, and address size.
1.76 + TestCompilationUnit &Header(int version, const Label &abbrev_offset,
1.77 + size_t address_size) {
1.78 + if (format_size_ == 4) {
1.79 + D32(length_);
1.80 + } else {
1.81 + D32(0xffffffff);
1.82 + D64(length_);
1.83 + }
1.84 + post_length_offset_ = Size();
1.85 + D16(version);
1.86 + SectionOffset(abbrev_offset);
1.87 + D8(address_size);
1.88 + return *this;
1.89 + }
1.90 +
1.91 + // Mark the end of this header's DIEs.
1.92 + TestCompilationUnit &Finish() {
1.93 + length_ = Size() - post_length_offset_;
1.94 + return *this;
1.95 + }
1.96 +
1.97 + private:
1.98 + // The DWARF format size for this compilation unit.
1.99 + size_t format_size_;
1.100 +
1.101 + // The offset of the point in the compilation unit header immediately
1.102 + // after the initial length field.
1.103 + uint64_t post_length_offset_;
1.104 +
1.105 + // The length of the compilation unit, not including the initial length field.
1.106 + Label length_;
1.107 +};
1.108 +
1.109 +// A subclass of test_assembler::Section specialized for constructing DWARF
1.110 +// abbreviation tables.
1.111 +class TestAbbrevTable: public google_breakpad::test_assembler::Section {
1.112 + public:
1.113 + typedef dwarf2reader::DwarfTag DwarfTag;
1.114 + typedef dwarf2reader::DwarfAttribute DwarfAttribute;
1.115 + typedef dwarf2reader::DwarfForm DwarfForm;
1.116 + typedef dwarf2reader::DwarfHasChild DwarfHasChild;
1.117 + typedef google_breakpad::test_assembler::Label Label;
1.118 +
1.119 + // Start a new abbreviation table entry for abbreviation code |code|,
1.120 + // encoding a DIE whose tag is |tag|, and which has children if and only
1.121 + // if |has_children| is true.
1.122 + TestAbbrevTable &Abbrev(int code, DwarfTag tag, DwarfHasChild has_children) {
1.123 + assert(code != 0);
1.124 + ULEB128(code);
1.125 + ULEB128(static_cast<unsigned>(tag));
1.126 + D8(static_cast<unsigned>(has_children));
1.127 + return *this;
1.128 + };
1.129 +
1.130 + // Add an attribute to the current abbreviation code whose name is |name|
1.131 + // and whose form is |form|.
1.132 + TestAbbrevTable &Attribute(DwarfAttribute name, DwarfForm form) {
1.133 + ULEB128(static_cast<unsigned>(name));
1.134 + ULEB128(static_cast<unsigned>(form));
1.135 + return *this;
1.136 + }
1.137 +
1.138 + // Finish the current abbreviation code.
1.139 + TestAbbrevTable &EndAbbrev() {
1.140 + ULEB128(0);
1.141 + ULEB128(0);
1.142 + return *this;
1.143 + }
1.144 +
1.145 + // Finish the current abbreviation table.
1.146 + TestAbbrevTable &EndTable() {
1.147 + ULEB128(0);
1.148 + return *this;
1.149 + }
1.150 +};
1.151 +
1.152 +#endif // COMMON_DWARF_DWARF2READER_TEST_COMMON_H__
