* Updated breakpad to latest version.

thirdparty/breakpad/common/dwarf/dwarf2reader_test_common.h

@@ -0,0 +1,149 @@
+// -*- 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.
+  u_int64_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__