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Diffstat (limited to '3rdParty/Breakpad/src/common/dwarf/dwarf2reader_test_common.h')
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+// -*- mode: c++ -*-
+
+// Copyright (c) 2012, 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: Jim Blandy <jimb@mozilla.com> <jimb@red-bean.com>
+
+// dwarf2reader_test_common.h: Define TestCompilationUnit and
+// TestAbbrevTable, classes for creating properly (and improperly)
+// formatted DWARF compilation unit data for unit tests.
+
+#ifndef COMMON_DWARF_DWARF2READER_TEST_COMMON_H__
+#define COMMON_DWARF_DWARF2READER_TEST_COMMON_H__
+
+#include "common/test_assembler.h"
+#include "common/dwarf/dwarf2enums.h"
+
+// A subclass of test_assembler::Section, specialized for constructing
+// DWARF compilation units.
+class TestCompilationUnit: public google_breakpad::test_assembler::Section {
+ public:
+ typedef dwarf2reader::DwarfTag DwarfTag;
+ typedef dwarf2reader::DwarfAttribute DwarfAttribute;
+ typedef dwarf2reader::DwarfForm DwarfForm;
+ typedef google_breakpad::test_assembler::Label Label;
+
+ // Set the section's DWARF format size (the 32-bit DWARF format or the
+ // 64-bit DWARF format, for lengths and section offsets --- not the
+ // address size) to format_size.
+ void set_format_size(size_t format_size) {
+ assert(format_size == 4 || format_size == 8);
+ format_size_ = format_size;
+ }
+
+ // Append a DWARF section offset value, of the appropriate size for this
+ // compilation unit.
+ template<typename T>
+ void SectionOffset(T offset) {
+ if (format_size_ == 4)
+ D32(offset);
+ else
+ D64(offset);
+ }
+
+ // Append a DWARF compilation unit header to the section, with the given
+ // DWARF version, abbrev table offset, and address size.
+ TestCompilationUnit &Header(int version, const Label &abbrev_offset,
+ size_t address_size) {
+ if (format_size_ == 4) {
+ D32(length_);
+ } else {
+ D32(0xffffffff);
+ D64(length_);
+ }
+ post_length_offset_ = Size();
+ D16(version);
+ SectionOffset(abbrev_offset);
+ D8(address_size);
+ return *this;
+ }
+
+ // Mark the end of this header's DIEs.
+ TestCompilationUnit &Finish() {
+ length_ = Size() - post_length_offset_;
+ return *this;
+ }
+
+ private:
+ // The DWARF format size for this compilation unit.
+ size_t format_size_;
+
+ // The offset of the point in the compilation unit header immediately
+ // after the initial length field.
+ uint64_t post_length_offset_;
+
+ // The length of the compilation unit, not including the initial length field.
+ Label length_;
+};
+
+// A subclass of test_assembler::Section specialized for constructing DWARF
+// abbreviation tables.
+class TestAbbrevTable: public google_breakpad::test_assembler::Section {
+ public:
+ typedef dwarf2reader::DwarfTag DwarfTag;
+ typedef dwarf2reader::DwarfAttribute DwarfAttribute;
+ typedef dwarf2reader::DwarfForm DwarfForm;
+ typedef dwarf2reader::DwarfHasChild DwarfHasChild;
+ typedef google_breakpad::test_assembler::Label Label;
+
+ // Start a new abbreviation table entry for abbreviation code |code|,
+ // encoding a DIE whose tag is |tag|, and which has children if and only
+ // if |has_children| is true.
+ TestAbbrevTable &Abbrev(int code, DwarfTag tag, DwarfHasChild has_children) {
+ assert(code != 0);
+ ULEB128(code);
+ ULEB128(static_cast<unsigned>(tag));
+ D8(static_cast<unsigned>(has_children));
+ return *this;
+ };
+
+ // Add an attribute to the current abbreviation code whose name is |name|
+ // and whose form is |form|.
+ TestAbbrevTable &Attribute(DwarfAttribute name, DwarfForm form) {
+ ULEB128(static_cast<unsigned>(name));
+ ULEB128(static_cast<unsigned>(form));
+ return *this;
+ }
+
+ // Finish the current abbreviation code.
+ TestAbbrevTable &EndAbbrev() {
+ ULEB128(0);
+ ULEB128(0);
+ return *this;
+ }
+
+ // Finish the current abbreviation table.
+ TestAbbrevTable &EndTable() {
+ ULEB128(0);
+ return *this;
+ }
+};
+
+#endif // COMMON_DWARF_DWARF2READER_TEST_COMMON_H__