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Add partial unit tests for dwarf2reader::CompilationUnit.

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This is really incomplete --- it's just what's needed to get started
testing support for the DWARF 4 attribute forms.


git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@910 4c0a9323-5329-0410-9bdc-e9ce6186880e
This commit is contained in:
jimblandy 2012-02-01 14:57:58 +00:00
parent e06ebb4817
commit 6eccfe32b1
4 changed files with 549 additions and 0 deletions
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1
Makefile.am
View file

@ -398,6 +398,7 @@ src_common_dumper_unittest_SOURCES = \
src/common/dwarf/dwarf2diehandler_unittest.cc \
src/common/dwarf/dwarf2reader.cc \
src/common/dwarf/dwarf2reader_cfi_unittest.cc \
src/common/dwarf/dwarf2reader_die_unittest.cc \
src/common/linux/dump_symbols.cc \
src/common/linux/dump_symbols_unittest.cc \
src/common/linux/elf_core_dump.cc \

22
Makefile.in
View file

@ -455,6 +455,7 @@ am__src_common_dumper_unittest_SOURCES_DIST = \
src/common/dwarf/dwarf2diehandler_unittest.cc \
src/common/dwarf/dwarf2reader.cc \
src/common/dwarf/dwarf2reader_cfi_unittest.cc \
src/common/dwarf/dwarf2reader_die_unittest.cc \
src/common/linux/dump_symbols.cc \
src/common/linux/dump_symbols_unittest.cc \
src/common/linux/elf_core_dump.cc \
@ -497,6 +498,7 @@ am__src_common_dumper_unittest_SOURCES_DIST = \
@DISABLE_TOOLS_FALSE@@LINUX_HOST_TRUE@ src/common/dwarf/src_common_dumper_unittest-dwarf2diehandler_unittest.$(OBJEXT) \
@DISABLE_TOOLS_FALSE@@LINUX_HOST_TRUE@ src/common/dwarf/src_common_dumper_unittest-dwarf2reader.$(OBJEXT) \
@DISABLE_TOOLS_FALSE@@LINUX_HOST_TRUE@ src/common/dwarf/src_common_dumper_unittest-dwarf2reader_cfi_unittest.$(OBJEXT) \
@DISABLE_TOOLS_FALSE@@LINUX_HOST_TRUE@ src/common/dwarf/src_common_dumper_unittest-dwarf2reader_die_unittest.$(OBJEXT) \
@DISABLE_TOOLS_FALSE@@LINUX_HOST_TRUE@ src/common/linux/src_common_dumper_unittest-dump_symbols.$(OBJEXT) \
@DISABLE_TOOLS_FALSE@@LINUX_HOST_TRUE@ src/common/linux/src_common_dumper_unittest-dump_symbols_unittest.$(OBJEXT) \
@DISABLE_TOOLS_FALSE@@LINUX_HOST_TRUE@ src/common/linux/src_common_dumper_unittest-elf_core_dump.$(OBJEXT) \
@ -1481,6 +1483,7 @@ TESTS_ENVIRONMENT =
@DISABLE_TOOLS_FALSE@@LINUX_HOST_TRUE@ src/common/dwarf/dwarf2diehandler_unittest.cc \
@DISABLE_TOOLS_FALSE@@LINUX_HOST_TRUE@ src/common/dwarf/dwarf2reader.cc \
@DISABLE_TOOLS_FALSE@@LINUX_HOST_TRUE@ src/common/dwarf/dwarf2reader_cfi_unittest.cc \
@DISABLE_TOOLS_FALSE@@LINUX_HOST_TRUE@ src/common/dwarf/dwarf2reader_die_unittest.cc \
@DISABLE_TOOLS_FALSE@@LINUX_HOST_TRUE@ src/common/linux/dump_symbols.cc \
@DISABLE_TOOLS_FALSE@@LINUX_HOST_TRUE@ src/common/linux/dump_symbols_unittest.cc \
@DISABLE_TOOLS_FALSE@@LINUX_HOST_TRUE@ src/common/linux/elf_core_dump.cc \
@ -2604,6 +2607,9 @@ src/common/dwarf/src_common_dumper_unittest-dwarf2reader.$(OBJEXT): \
src/common/dwarf/src_common_dumper_unittest-dwarf2reader_cfi_unittest.$(OBJEXT): \
src/common/dwarf/$(am__dirstamp) \
src/common/dwarf/$(DEPDIR)/$(am__dirstamp)
src/common/dwarf/src_common_dumper_unittest-dwarf2reader_die_unittest.$(OBJEXT): \
src/common/dwarf/$(am__dirstamp) \
src/common/dwarf/$(DEPDIR)/$(am__dirstamp)
src/common/linux/src_common_dumper_unittest-dump_symbols.$(OBJEXT): \
src/common/linux/$(am__dirstamp) \
src/common/linux/$(DEPDIR)/$(am__dirstamp)
@ -3107,6 +3113,7 @@ mostlyclean-compile:
-rm -f src/common/dwarf/src_common_dumper_unittest-dwarf2diehandler_unittest.$(OBJEXT)
-rm -f src/common/dwarf/src_common_dumper_unittest-dwarf2reader.$(OBJEXT)
-rm -f src/common/dwarf/src_common_dumper_unittest-dwarf2reader_cfi_unittest.$(OBJEXT)
-rm -f src/common/dwarf/src_common_dumper_unittest-dwarf2reader_die_unittest.$(OBJEXT)
-rm -f src/common/dwarf_cfi_to_module.$(OBJEXT)
-rm -f src/common/dwarf_cu_to_module.$(OBJEXT)
-rm -f src/common/dwarf_line_to_module.$(OBJEXT)
@ -3359,6 +3366,7 @@ distclean-compile:
@AMDEP_TRUE@@am__include@ @am__quote@src/common/dwarf/$(DEPDIR)/src_common_dumper_unittest-dwarf2diehandler_unittest.Po@am__quote@
@AMDEP_TRUE@@am__include@ @am__quote@src/common/dwarf/$(DEPDIR)/src_common_dumper_unittest-dwarf2reader.Po@am__quote@
@AMDEP_TRUE@@am__include@ @am__quote@src/common/dwarf/$(DEPDIR)/src_common_dumper_unittest-dwarf2reader_cfi_unittest.Po@am__quote@
@AMDEP_TRUE@@am__include@ @am__quote@src/common/dwarf/$(DEPDIR)/src_common_dumper_unittest-dwarf2reader_die_unittest.Po@am__quote@
@AMDEP_TRUE@@am__include@ @am__quote@src/common/linux/$(DEPDIR)/dump_symbols.Po@am__quote@
@AMDEP_TRUE@@am__include@ @am__quote@src/common/linux/$(DEPDIR)/elf_core_dump.Po@am__quote@
@AMDEP_TRUE@@am__include@ @am__quote@src/common/linux/$(DEPDIR)/elf_symbols_to_module.Po@am__quote@
@ -4123,6 +4131,20 @@ src/common/dwarf/src_common_dumper_unittest-dwarf2reader_cfi_unittest.obj: src/c
@AMDEP_TRUE@@am__fastdepCXX_FALSE@ DEPDIR=$(DEPDIR) $(CXXDEPMODE) $(depcomp) @AMDEPBACKSLASH@
@am__fastdepCXX_FALSE@ $(CXX) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(src_common_dumper_unittest_CPPFLAGS) $(CPPFLAGS) $(AM_CXXFLAGS) $(CXXFLAGS) -c -o src/common/dwarf/src_common_dumper_unittest-dwarf2reader_cfi_unittest.obj `if test -f 'src/common/dwarf/dwarf2reader_cfi_unittest.cc'; then $(CYGPATH_W) 'src/common/dwarf/dwarf2reader_cfi_unittest.cc'; else $(CYGPATH_W) '$(srcdir)/src/common/dwarf/dwarf2reader_cfi_unittest.cc'; fi`
src/common/dwarf/src_common_dumper_unittest-dwarf2reader_die_unittest.o: src/common/dwarf/dwarf2reader_die_unittest.cc
@am__fastdepCXX_TRUE@ $(CXX) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(src_common_dumper_unittest_CPPFLAGS) $(CPPFLAGS) $(AM_CXXFLAGS) $(CXXFLAGS) -MT src/common/dwarf/src_common_dumper_unittest-dwarf2reader_die_unittest.o -MD -MP -MF src/common/dwarf/$(DEPDIR)/src_common_dumper_unittest-dwarf2reader_die_unittest.Tpo -c -o src/common/dwarf/src_common_dumper_unittest-dwarf2reader_die_unittest.o `test -f 'src/common/dwarf/dwarf2reader_die_unittest.cc' || echo '$(srcdir)/'`src/common/dwarf/dwarf2reader_die_unittest.cc
@am__fastdepCXX_TRUE@ $(am__mv) src/common/dwarf/$(DEPDIR)/src_common_dumper_unittest-dwarf2reader_die_unittest.Tpo src/common/dwarf/$(DEPDIR)/src_common_dumper_unittest-dwarf2reader_die_unittest.Po
@AMDEP_TRUE@@am__fastdepCXX_FALSE@ source='src/common/dwarf/dwarf2reader_die_unittest.cc' object='src/common/dwarf/src_common_dumper_unittest-dwarf2reader_die_unittest.o' libtool=no @AMDEPBACKSLASH@
@AMDEP_TRUE@@am__fastdepCXX_FALSE@ DEPDIR=$(DEPDIR) $(CXXDEPMODE) $(depcomp) @AMDEPBACKSLASH@
@am__fastdepCXX_FALSE@ $(CXX) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(src_common_dumper_unittest_CPPFLAGS) $(CPPFLAGS) $(AM_CXXFLAGS) $(CXXFLAGS) -c -o src/common/dwarf/src_common_dumper_unittest-dwarf2reader_die_unittest.o `test -f 'src/common/dwarf/dwarf2reader_die_unittest.cc' || echo '$(srcdir)/'`src/common/dwarf/dwarf2reader_die_unittest.cc
src/common/dwarf/src_common_dumper_unittest-dwarf2reader_die_unittest.obj: src/common/dwarf/dwarf2reader_die_unittest.cc
@am__fastdepCXX_TRUE@ $(CXX) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(src_common_dumper_unittest_CPPFLAGS) $(CPPFLAGS) $(AM_CXXFLAGS) $(CXXFLAGS) -MT src/common/dwarf/src_common_dumper_unittest-dwarf2reader_die_unittest.obj -MD -MP -MF src/common/dwarf/$(DEPDIR)/src_common_dumper_unittest-dwarf2reader_die_unittest.Tpo -c -o src/common/dwarf/src_common_dumper_unittest-dwarf2reader_die_unittest.obj `if test -f 'src/common/dwarf/dwarf2reader_die_unittest.cc'; then $(CYGPATH_W) 'src/common/dwarf/dwarf2reader_die_unittest.cc'; else $(CYGPATH_W) '$(srcdir)/src/common/dwarf/dwarf2reader_die_unittest.cc'; fi`
@am__fastdepCXX_TRUE@ $(am__mv) src/common/dwarf/$(DEPDIR)/src_common_dumper_unittest-dwarf2reader_die_unittest.Tpo src/common/dwarf/$(DEPDIR)/src_common_dumper_unittest-dwarf2reader_die_unittest.Po
@AMDEP_TRUE@@am__fastdepCXX_FALSE@ source='src/common/dwarf/dwarf2reader_die_unittest.cc' object='src/common/dwarf/src_common_dumper_unittest-dwarf2reader_die_unittest.obj' libtool=no @AMDEPBACKSLASH@
@AMDEP_TRUE@@am__fastdepCXX_FALSE@ DEPDIR=$(DEPDIR) $(CXXDEPMODE) $(depcomp) @AMDEPBACKSLASH@
@am__fastdepCXX_FALSE@ $(CXX) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(src_common_dumper_unittest_CPPFLAGS) $(CPPFLAGS) $(AM_CXXFLAGS) $(CXXFLAGS) -c -o src/common/dwarf/src_common_dumper_unittest-dwarf2reader_die_unittest.obj `if test -f 'src/common/dwarf/dwarf2reader_die_unittest.cc'; then $(CYGPATH_W) 'src/common/dwarf/dwarf2reader_die_unittest.cc'; else $(CYGPATH_W) '$(srcdir)/src/common/dwarf/dwarf2reader_die_unittest.cc'; fi`
src/common/linux/src_common_dumper_unittest-dump_symbols.o: src/common/linux/dump_symbols.cc
@am__fastdepCXX_TRUE@ $(CXX) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(src_common_dumper_unittest_CPPFLAGS) $(CPPFLAGS) $(AM_CXXFLAGS) $(CXXFLAGS) -MT src/common/linux/src_common_dumper_unittest-dump_symbols.o -MD -MP -MF src/common/linux/$(DEPDIR)/src_common_dumper_unittest-dump_symbols.Tpo -c -o src/common/linux/src_common_dumper_unittest-dump_symbols.o `test -f 'src/common/linux/dump_symbols.cc' || echo '$(srcdir)/'`src/common/linux/dump_symbols.cc
@am__fastdepCXX_TRUE@ $(am__mv) src/common/linux/$(DEPDIR)/src_common_dumper_unittest-dump_symbols.Tpo src/common/linux/$(DEPDIR)/src_common_dumper_unittest-dump_symbols.Po

377
src/common/dwarf/dwarf2reader_die_unittest.cc Normal file
View file

@ -0,0 +1,377 @@
// 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_die_unittest.cc: Unit tests for dwarf2reader::CompilationUnit
#include <stdlib.h>
#include <iostream>
#include <string>
#include <vector>
#include "breakpad_googletest_includes.h"
#include "common/dwarf/bytereader-inl.h"
#include "common/dwarf/dwarf2reader_test_common.h"
#include "common/dwarf/dwarf2reader.h"
#include "google_breakpad/common/breakpad_types.h"
using google_breakpad::test_assembler::Endianness;
using google_breakpad::test_assembler::Label;
using google_breakpad::test_assembler::Section;
using google_breakpad::test_assembler::kBigEndian;
using google_breakpad::test_assembler::kLittleEndian;
using dwarf2reader::AttributeList;
using dwarf2reader::ByteReader;
using dwarf2reader::CompilationUnit;
using dwarf2reader::Dwarf2Handler;
using dwarf2reader::DwarfAttribute;
using dwarf2reader::DwarfForm;
using dwarf2reader::DwarfHasChild;
using dwarf2reader::DwarfTag;
using dwarf2reader::ENDIANNESS_BIG;
using dwarf2reader::ENDIANNESS_LITTLE;
using dwarf2reader::SectionMap;
using std::string;
using std::vector;
using testing::InSequence;
using testing::Pointee;
using testing::Return;
using testing::Sequence;
using testing::Test;
using testing::TestWithParam;
using testing::_;
class MockDwarf2Handler: public Dwarf2Handler {
public:
MOCK_METHOD5(StartCompilationUnit, bool(uint64 offset, uint8 address_size,
uint8 offset_size, uint64 cu_length,
uint8 dwarf_version));
MOCK_METHOD3(StartDIE, bool(uint64 offset, enum DwarfTag tag,
const AttributeList& attrs));
MOCK_METHOD4(ProcessAttributeUnsigned, void(uint64 offset,
DwarfAttribute attr,
enum DwarfForm form,
uint64 data));
MOCK_METHOD4(ProcessAttributeSigned, void(uint64 offset,
enum DwarfAttribute attr,
enum DwarfForm form,
int64 data));
MOCK_METHOD4(ProcessAttributeReference, void(uint64 offset,
enum DwarfAttribute attr,
enum DwarfForm form,
uint64 data));
MOCK_METHOD5(ProcessAttributeBuffer, void(uint64 offset,
enum DwarfAttribute attr,
enum DwarfForm form,
const char* data,
uint64 len));
MOCK_METHOD4(ProcessAttributeString, void(uint64 offset,
enum DwarfAttribute attr,
enum DwarfForm form,
const std::string& data));
MOCK_METHOD1(EndDIE, void(uint64 offset));
};
struct DIEFixture {
DIEFixture() {
// Fix the initial offset of the .debug_info and .debug_abbrev sections.
info.start() = 0;
abbrevs.start() = 0;
// Default expectations for the data handler.
EXPECT_CALL(handler, StartCompilationUnit(_, _, _, _, _)).Times(0);
EXPECT_CALL(handler, StartDIE(_, _, _)).Times(0);
EXPECT_CALL(handler, ProcessAttributeUnsigned(_, _, _, _)).Times(0);
EXPECT_CALL(handler, ProcessAttributeSigned(_, _, _, _)).Times(0);
EXPECT_CALL(handler, ProcessAttributeReference(_, _, _, _)).Times(0);
EXPECT_CALL(handler, ProcessAttributeBuffer(_, _, _, _, _)).Times(0);
EXPECT_CALL(handler, ProcessAttributeString(_, _, _, _)).Times(0);
EXPECT_CALL(handler, EndDIE(_)).Times(0);
}
// Return a reference to a section map whose .debug_info section refers
// to |info|, and whose .debug_abbrev section refers to |abbrevs|. This
// function returns a reference to the same SectionMap each time; new
// calls wipe out maps established by earlier calls.
const SectionMap &MakeSectionMap() {
// Copy the sections' contents into strings that will live as long as
// the map itself.
assert(info.GetContents(&info_contents));
assert(abbrevs.GetContents(&abbrevs_contents));
section_map.clear();
section_map[".debug_info"].first = info_contents.data();
section_map[".debug_info"].second = info_contents.size();
section_map[".debug_abbrev"].first = abbrevs_contents.data();
section_map[".debug_abbrev"].second = abbrevs_contents.size();
return section_map;
}
TestCompilationUnit info;
TestAbbrevTable abbrevs;
MockDwarf2Handler handler;
string abbrevs_contents, info_contents;
SectionMap section_map;
};
struct DwarfHeaderParams {
DwarfHeaderParams(Endianness endianness, size_t format_size,
int version, size_t address_size)
: endianness(endianness), format_size(format_size),
version(version), address_size(address_size) { }
Endianness endianness;
size_t format_size; // 4-byte or 8-byte DWARF offsets
int version;
size_t address_size;
};
class DwarfHeader: public DIEFixture,
public TestWithParam<DwarfHeaderParams> { };
TEST_P(DwarfHeader, Header) {
Label abbrev_table = abbrevs.Here();
abbrevs.Abbrev(1, dwarf2reader::DW_TAG_compile_unit,
dwarf2reader::DW_children_yes)
.Attribute(dwarf2reader::DW_AT_name, dwarf2reader::DW_FORM_string)
.EndAbbrev()
.EndTable();
info.set_format_size(GetParam().format_size);
info.set_endianness(GetParam().endianness);
info.Header(GetParam().version, abbrev_table, GetParam().address_size)
.ULEB128(1) // DW_TAG_compile_unit, with children
.AppendCString("sam") // DW_AT_name, DW_FORM_string
.D8(0); // end of children
info.Finish();
{
InSequence s;
EXPECT_CALL(handler,
StartCompilationUnit(0, GetParam().address_size,
GetParam().format_size, _,
GetParam().version))
.WillOnce(Return(true));
EXPECT_CALL(handler, StartDIE(_, dwarf2reader::DW_TAG_compile_unit, _))
.WillOnce(Return(true));
EXPECT_CALL(handler, ProcessAttributeString(_, dwarf2reader::DW_AT_name,
dwarf2reader::DW_FORM_string,
"sam"))
.WillOnce(Return());
EXPECT_CALL(handler, EndDIE(_))
.WillOnce(Return());
}
ByteReader byte_reader(GetParam().endianness == kLittleEndian ?
ENDIANNESS_LITTLE : ENDIANNESS_BIG);
CompilationUnit parser(MakeSectionMap(), 0, &byte_reader, &handler);
EXPECT_EQ(parser.Start(), info_contents.size());
}
INSTANTIATE_TEST_CASE_P(
HeaderVariants, DwarfHeader,
::testing::Values(DwarfHeaderParams(kLittleEndian, 4, 2, 4),
DwarfHeaderParams(kLittleEndian, 4, 2, 8),
DwarfHeaderParams(kLittleEndian, 4, 3, 4),
DwarfHeaderParams(kLittleEndian, 4, 3, 8),
DwarfHeaderParams(kLittleEndian, 4, 4, 4),
DwarfHeaderParams(kLittleEndian, 4, 4, 8),
DwarfHeaderParams(kLittleEndian, 8, 2, 4),
DwarfHeaderParams(kLittleEndian, 8, 2, 8),
DwarfHeaderParams(kLittleEndian, 8, 3, 4),
DwarfHeaderParams(kLittleEndian, 8, 3, 8),
DwarfHeaderParams(kLittleEndian, 8, 4, 4),
DwarfHeaderParams(kLittleEndian, 8, 4, 8),
DwarfHeaderParams(kBigEndian, 4, 2, 4),
DwarfHeaderParams(kBigEndian, 4, 2, 8),
DwarfHeaderParams(kBigEndian, 4, 3, 4),
DwarfHeaderParams(kBigEndian, 4, 3, 8),
DwarfHeaderParams(kBigEndian, 4, 4, 4),
DwarfHeaderParams(kBigEndian, 4, 4, 8),
DwarfHeaderParams(kBigEndian, 8, 2, 4),
DwarfHeaderParams(kBigEndian, 8, 2, 8),
DwarfHeaderParams(kBigEndian, 8, 3, 4),
DwarfHeaderParams(kBigEndian, 8, 3, 8),
DwarfHeaderParams(kBigEndian, 8, 4, 4),
DwarfHeaderParams(kBigEndian, 8, 4, 8)));
struct DwarfFormsFixture: public DIEFixture {
// Start a compilation unit, as directed by |params|, containing one
// childless DIE of the given tag, with one attribute of the given name
// and form. The 'info' fixture member is left just after the abbrev
// code, waiting for the attribute value to be appended.
void StartSingleAttributeDIE(const DwarfHeaderParams &params,
DwarfTag tag, DwarfAttribute name,
DwarfForm form) {
// Create the abbreviation table.
Label abbrev_table = abbrevs.Here();
abbrevs.Abbrev(1, tag, dwarf2reader::DW_children_no)
.Attribute(name, form)
.EndAbbrev()
.EndTable();
// Create the compilation unit, up to the attribute value.
info.set_format_size(params.format_size);
info.set_endianness(params.endianness);
info.Header(params.version, abbrev_table, params.address_size)
.ULEB128(1); // abbrev code
}
// Set up handler to expect a compilation unit matching |params|,
// containing one childless DIE of the given tag, in the sequence s. Stop
// just before the expectations.
void ExpectBeginCompilationUnit(const DwarfHeaderParams &params,
DwarfTag tag) {
EXPECT_CALL(handler,
StartCompilationUnit(0, params.address_size,
params.format_size, _,
params.version))
.InSequence(s)
.WillOnce(Return(true));
EXPECT_CALL(handler, StartDIE(_, tag, _))
.InSequence(s)
.WillOnce(Return(true));
}
void ExpectEndCompilationUnit() {
EXPECT_CALL(handler, EndDIE(_))
.InSequence(s)
.WillOnce(Return());
}
void ParseCompilationUnit(const DwarfHeaderParams &params) {
ByteReader byte_reader(params.endianness == kLittleEndian ?
ENDIANNESS_LITTLE : ENDIANNESS_BIG);
CompilationUnit parser(MakeSectionMap(), 0, &byte_reader, &handler);
EXPECT_EQ(parser.Start(), info_contents.size());
}
// The sequence to which the fixture's methods append expectations.
Sequence s;
};
struct DwarfForms: public DwarfFormsFixture,
public TestWithParam<DwarfHeaderParams> { };
TEST_P(DwarfForms, addr) {
StartSingleAttributeDIE(GetParam(), dwarf2reader::DW_TAG_compile_unit,
dwarf2reader::DW_AT_low_pc,
dwarf2reader::DW_FORM_addr);
u_int64_t value;
if (GetParam().address_size == 4) {
value = 0xc8e9ffcc;
info.D32(value);
} else {
value = 0xe942517fc2768564ULL;
info.D64(value);
}
info.Finish();
ExpectBeginCompilationUnit(GetParam(), dwarf2reader::DW_TAG_compile_unit);
EXPECT_CALL(handler, ProcessAttributeUnsigned(_, dwarf2reader::DW_AT_low_pc,
dwarf2reader::DW_FORM_addr,
value))
.InSequence(s)
.WillOnce(Return());
ExpectEndCompilationUnit();
ParseCompilationUnit(GetParam());
}
TEST_P(DwarfForms, block2_empty) {
StartSingleAttributeDIE(GetParam(), (DwarfTag) 0x16e4d2f7,
(DwarfAttribute) 0xe52c4463,
dwarf2reader::DW_FORM_block2);
info.D16(0);
info.Finish();
ExpectBeginCompilationUnit(GetParam(), (DwarfTag) 0x16e4d2f7);
EXPECT_CALL(handler, ProcessAttributeBuffer(_, (DwarfAttribute) 0xe52c4463,
dwarf2reader::DW_FORM_block2,
_, 0))
.InSequence(s)
.WillOnce(Return());
ExpectEndCompilationUnit();
ParseCompilationUnit(GetParam());
}
TEST_P(DwarfForms, block2) {
StartSingleAttributeDIE(GetParam(), (DwarfTag) 0x16e4d2f7,
(DwarfAttribute) 0xe52c4463,
dwarf2reader::DW_FORM_block2);
unsigned char data[258];
memset(data, '*', sizeof(data));
info.D16(sizeof(data))
.Append(data, sizeof(data));
info.Finish();
ExpectBeginCompilationUnit(GetParam(), (DwarfTag) 0x16e4d2f7);
EXPECT_CALL(handler, ProcessAttributeBuffer(_, (DwarfAttribute) 0xe52c4463,
dwarf2reader::DW_FORM_block2,
Pointee('*'), 258))
.InSequence(s)
.WillOnce(Return());
ExpectEndCompilationUnit();
ParseCompilationUnit(GetParam());
}
// Tests for the other attribute forms could go here.
INSTANTIATE_TEST_CASE_P(
HeaderVariants, DwarfForms,
::testing::Values(DwarfHeaderParams(kLittleEndian, 4, 2, 4),
DwarfHeaderParams(kLittleEndian, 4, 2, 8),
DwarfHeaderParams(kLittleEndian, 4, 3, 4),
DwarfHeaderParams(kLittleEndian, 4, 3, 8),
DwarfHeaderParams(kLittleEndian, 4, 4, 4),
DwarfHeaderParams(kLittleEndian, 4, 4, 8),
DwarfHeaderParams(kLittleEndian, 8, 2, 4),
DwarfHeaderParams(kLittleEndian, 8, 2, 8),
DwarfHeaderParams(kLittleEndian, 8, 3, 4),
DwarfHeaderParams(kLittleEndian, 8, 3, 8),
DwarfHeaderParams(kLittleEndian, 8, 4, 4),
DwarfHeaderParams(kLittleEndian, 8, 4, 8),
DwarfHeaderParams(kBigEndian, 4, 2, 4),
DwarfHeaderParams(kBigEndian, 4, 2, 8),
DwarfHeaderParams(kBigEndian, 4, 3, 4),
DwarfHeaderParams(kBigEndian, 4, 3, 8),
DwarfHeaderParams(kBigEndian, 4, 4, 4),
DwarfHeaderParams(kBigEndian, 4, 4, 8),
DwarfHeaderParams(kBigEndian, 8, 2, 4),
DwarfHeaderParams(kBigEndian, 8, 2, 8),
DwarfHeaderParams(kBigEndian, 8, 3, 4),
DwarfHeaderParams(kBigEndian, 8, 3, 8),
DwarfHeaderParams(kBigEndian, 8, 4, 4),
DwarfHeaderParams(kBigEndian, 8, 4, 8)));

149
src/common/dwarf/dwarf2reader_test_common.h Normal file
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@ -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__