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Dump PUBLIC + CFI records from libraries without debug info on Linux, use .dynsym for symbol names if there are no usable debug symbols.

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R=jimb at http://breakpad.appspot.com/275001/show

git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@793 4c0a9323-5329-0410-9bdc-e9ce6186880e
This commit is contained in:
ted.mielczarek 2011-07-06 17:05:49 +00:00
parent be55cc8cf0
commit b2f96f314c
6 changed files with 773 additions and 7 deletions
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5
Makefile.am
View file

@ -340,6 +340,7 @@ src_tools_linux_dump_syms_dump_syms_SOURCES = \
src/common/dwarf/dwarf2diehandler.cc \ src/common/dwarf/dwarf2diehandler.cc \
src/common/dwarf/dwarf2reader.cc \ src/common/dwarf/dwarf2reader.cc \
src/common/linux/dump_symbols.cc \ src/common/linux/dump_symbols.cc \
src/common/linux/elf_symbols_to_module.cc \
src/common/linux/file_id.cc \ src/common/linux/file_id.cc \
src/tools/linux/dump_syms/dump_syms.cc src/tools/linux/dump_syms/dump_syms.cc
@ -380,6 +381,8 @@ src_common_dumper_unittest_SOURCES = \
src/common/dwarf/dwarf2reader.cc \ src/common/dwarf/dwarf2reader.cc \
src/common/dwarf/dwarf2reader_cfi_unittest.cc \ src/common/dwarf/dwarf2reader_cfi_unittest.cc \
src/common/linux/dump_symbols.cc \ src/common/linux/dump_symbols.cc \
src/common/linux/elf_symbols_to_module.cc \
src/common/linux/elf_symbols_to_module_unittest.cc \
src/common/linux/file_id.cc \ src/common/linux/file_id.cc \
src/common/linux/file_id_unittest.cc \ src/common/linux/file_id_unittest.cc \
src/testing/gtest/src/gtest-all.cc \ src/testing/gtest/src/gtest-all.cc \
@ -945,6 +948,8 @@ EXTRA_DIST = \
src/common/convert_UTF.h \ src/common/convert_UTF.h \
src/common/linux/dump_symbols.cc \ src/common/linux/dump_symbols.cc \
src/common/linux/dump_symbols.h \ src/common/linux/dump_symbols.h \
src/common/linux/elf_symbols_to_module.cc \
src/common/linux/elf_symbols_to_module.h \
src/common/linux/file_id.cc \ src/common/linux/file_id.cc \
src/common/linux/file_id.h \ src/common/linux/file_id.h \
src/common/linux/guid_creator.cc \ src/common/linux/guid_creator.cc \

60
Makefile.in
View file

@ -450,7 +450,10 @@ am__src_common_dumper_unittest_SOURCES_DIST = \
src/common/dwarf/dwarf2diehandler_unittest.cc \ src/common/dwarf/dwarf2diehandler_unittest.cc \
src/common/dwarf/dwarf2reader.cc \ src/common/dwarf/dwarf2reader.cc \
src/common/dwarf/dwarf2reader_cfi_unittest.cc \ src/common/dwarf/dwarf2reader_cfi_unittest.cc \
src/common/linux/dump_symbols.cc src/common/linux/file_id.cc \ src/common/linux/dump_symbols.cc \
src/common/linux/elf_symbols_to_module.cc \
src/common/linux/elf_symbols_to_module_unittest.cc \
src/common/linux/file_id.cc \
src/common/linux/file_id_unittest.cc \ src/common/linux/file_id_unittest.cc \
src/testing/gtest/src/gtest-all.cc \ src/testing/gtest/src/gtest-all.cc \
src/testing/gtest/src/gtest_main.cc \ src/testing/gtest/src/gtest_main.cc \
@ -478,6 +481,8 @@ am__src_common_dumper_unittest_SOURCES_DIST = \
@DISABLE_TOOLS_FALSE@@LINUX_HOST_TRUE@ src/common/dwarf/src_common_dumper_unittest-dwarf2reader.$(OBJEXT) \ @DISABLE_TOOLS_FALSE@@LINUX_HOST_TRUE@ src/common/dwarf/src_common_dumper_unittest-dwarf2reader.$(OBJEXT) \
@DISABLE_TOOLS_FALSE@@LINUX_HOST_TRUE@ src/common/dwarf/src_common_dumper_unittest-dwarf2reader_cfi_unittest.$(OBJEXT) \ @DISABLE_TOOLS_FALSE@@LINUX_HOST_TRUE@ src/common/dwarf/src_common_dumper_unittest-dwarf2reader_cfi_unittest.$(OBJEXT) \
@DISABLE_TOOLS_FALSE@@LINUX_HOST_TRUE@ src/common/linux/src_common_dumper_unittest-dump_symbols.$(OBJEXT) \ @DISABLE_TOOLS_FALSE@@LINUX_HOST_TRUE@ src/common/linux/src_common_dumper_unittest-dump_symbols.$(OBJEXT) \
@DISABLE_TOOLS_FALSE@@LINUX_HOST_TRUE@ src/common/linux/src_common_dumper_unittest-elf_symbols_to_module.$(OBJEXT) \
@DISABLE_TOOLS_FALSE@@LINUX_HOST_TRUE@ src/common/linux/src_common_dumper_unittest-elf_symbols_to_module_unittest.$(OBJEXT) \
@DISABLE_TOOLS_FALSE@@LINUX_HOST_TRUE@ src/common/linux/src_common_dumper_unittest-file_id.$(OBJEXT) \ @DISABLE_TOOLS_FALSE@@LINUX_HOST_TRUE@ src/common/linux/src_common_dumper_unittest-file_id.$(OBJEXT) \
@DISABLE_TOOLS_FALSE@@LINUX_HOST_TRUE@ src/common/linux/src_common_dumper_unittest-file_id_unittest.$(OBJEXT) \ @DISABLE_TOOLS_FALSE@@LINUX_HOST_TRUE@ src/common/linux/src_common_dumper_unittest-file_id_unittest.$(OBJEXT) \
@DISABLE_TOOLS_FALSE@@LINUX_HOST_TRUE@ src/testing/gtest/src/src_common_dumper_unittest-gtest-all.$(OBJEXT) \ @DISABLE_TOOLS_FALSE@@LINUX_HOST_TRUE@ src/testing/gtest/src/src_common_dumper_unittest-gtest-all.$(OBJEXT) \
@ -970,7 +975,9 @@ am__src_tools_linux_dump_syms_dump_syms_SOURCES_DIST = \
src/common/stabs_to_module.cc src/common/dwarf/bytereader.cc \ src/common/stabs_to_module.cc src/common/dwarf/bytereader.cc \
src/common/dwarf/dwarf2diehandler.cc \ src/common/dwarf/dwarf2diehandler.cc \
src/common/dwarf/dwarf2reader.cc \ src/common/dwarf/dwarf2reader.cc \
src/common/linux/dump_symbols.cc src/common/linux/file_id.cc \ src/common/linux/dump_symbols.cc \
src/common/linux/elf_symbols_to_module.cc \
src/common/linux/file_id.cc \
src/tools/linux/dump_syms/dump_syms.cc src/tools/linux/dump_syms/dump_syms.cc
@DISABLE_TOOLS_FALSE@@LINUX_HOST_TRUE@am_src_tools_linux_dump_syms_dump_syms_OBJECTS = src/common/dwarf_cfi_to_module.$(OBJEXT) \ @DISABLE_TOOLS_FALSE@@LINUX_HOST_TRUE@am_src_tools_linux_dump_syms_dump_syms_OBJECTS = src/common/dwarf_cfi_to_module.$(OBJEXT) \
@DISABLE_TOOLS_FALSE@@LINUX_HOST_TRUE@ src/common/dwarf_cu_to_module.$(OBJEXT) \ @DISABLE_TOOLS_FALSE@@LINUX_HOST_TRUE@ src/common/dwarf_cu_to_module.$(OBJEXT) \
@ -983,6 +990,7 @@ am__src_tools_linux_dump_syms_dump_syms_SOURCES_DIST = \
@DISABLE_TOOLS_FALSE@@LINUX_HOST_TRUE@ src/common/dwarf/dwarf2diehandler.$(OBJEXT) \ @DISABLE_TOOLS_FALSE@@LINUX_HOST_TRUE@ src/common/dwarf/dwarf2diehandler.$(OBJEXT) \
@DISABLE_TOOLS_FALSE@@LINUX_HOST_TRUE@ src/common/dwarf/dwarf2reader.$(OBJEXT) \ @DISABLE_TOOLS_FALSE@@LINUX_HOST_TRUE@ src/common/dwarf/dwarf2reader.$(OBJEXT) \
@DISABLE_TOOLS_FALSE@@LINUX_HOST_TRUE@ src/common/linux/dump_symbols.$(OBJEXT) \ @DISABLE_TOOLS_FALSE@@LINUX_HOST_TRUE@ src/common/linux/dump_symbols.$(OBJEXT) \
@DISABLE_TOOLS_FALSE@@LINUX_HOST_TRUE@ src/common/linux/elf_symbols_to_module.$(OBJEXT) \
@DISABLE_TOOLS_FALSE@@LINUX_HOST_TRUE@ src/common/linux/file_id.$(OBJEXT) \ @DISABLE_TOOLS_FALSE@@LINUX_HOST_TRUE@ src/common/linux/file_id.$(OBJEXT) \
@DISABLE_TOOLS_FALSE@@LINUX_HOST_TRUE@ src/tools/linux/dump_syms/dump_syms.$(OBJEXT) @DISABLE_TOOLS_FALSE@@LINUX_HOST_TRUE@ src/tools/linux/dump_syms/dump_syms.$(OBJEXT)
src_tools_linux_dump_syms_dump_syms_OBJECTS = \ src_tools_linux_dump_syms_dump_syms_OBJECTS = \
@ -1448,6 +1456,7 @@ TESTS_ENVIRONMENT =
@DISABLE_TOOLS_FALSE@@LINUX_HOST_TRUE@ src/common/dwarf/dwarf2diehandler.cc \ @DISABLE_TOOLS_FALSE@@LINUX_HOST_TRUE@ src/common/dwarf/dwarf2diehandler.cc \
@DISABLE_TOOLS_FALSE@@LINUX_HOST_TRUE@ src/common/dwarf/dwarf2reader.cc \ @DISABLE_TOOLS_FALSE@@LINUX_HOST_TRUE@ src/common/dwarf/dwarf2reader.cc \
@DISABLE_TOOLS_FALSE@@LINUX_HOST_TRUE@ src/common/linux/dump_symbols.cc \ @DISABLE_TOOLS_FALSE@@LINUX_HOST_TRUE@ src/common/linux/dump_symbols.cc \
@DISABLE_TOOLS_FALSE@@LINUX_HOST_TRUE@ src/common/linux/elf_symbols_to_module.cc \
@DISABLE_TOOLS_FALSE@@LINUX_HOST_TRUE@ src/common/linux/file_id.cc \ @DISABLE_TOOLS_FALSE@@LINUX_HOST_TRUE@ src/common/linux/file_id.cc \
@DISABLE_TOOLS_FALSE@@LINUX_HOST_TRUE@ src/tools/linux/dump_syms/dump_syms.cc @DISABLE_TOOLS_FALSE@@LINUX_HOST_TRUE@ src/tools/linux/dump_syms/dump_syms.cc
@ -1488,6 +1497,8 @@ TESTS_ENVIRONMENT =
@DISABLE_TOOLS_FALSE@@LINUX_HOST_TRUE@ src/common/dwarf/dwarf2reader.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_cfi_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.cc \
@DISABLE_TOOLS_FALSE@@LINUX_HOST_TRUE@ src/common/linux/elf_symbols_to_module.cc \
@DISABLE_TOOLS_FALSE@@LINUX_HOST_TRUE@ src/common/linux/elf_symbols_to_module_unittest.cc \
@DISABLE_TOOLS_FALSE@@LINUX_HOST_TRUE@ src/common/linux/file_id.cc \ @DISABLE_TOOLS_FALSE@@LINUX_HOST_TRUE@ src/common/linux/file_id.cc \
@DISABLE_TOOLS_FALSE@@LINUX_HOST_TRUE@ src/common/linux/file_id_unittest.cc \ @DISABLE_TOOLS_FALSE@@LINUX_HOST_TRUE@ src/common/linux/file_id_unittest.cc \
@DISABLE_TOOLS_FALSE@@LINUX_HOST_TRUE@ src/testing/gtest/src/gtest-all.cc \ @DISABLE_TOOLS_FALSE@@LINUX_HOST_TRUE@ src/testing/gtest/src/gtest-all.cc \
@ -2091,6 +2102,8 @@ EXTRA_DIST = \
src/common/convert_UTF.h \ src/common/convert_UTF.h \
src/common/linux/dump_symbols.cc \ src/common/linux/dump_symbols.cc \
src/common/linux/dump_symbols.h \ src/common/linux/dump_symbols.h \
src/common/linux/elf_symbols_to_module.cc \
src/common/linux/elf_symbols_to_module.h \
src/common/linux/file_id.cc \ src/common/linux/file_id.cc \
src/common/linux/file_id.h \ src/common/linux/file_id.h \
src/common/linux/guid_creator.cc \ src/common/linux/guid_creator.cc \
@ -2649,6 +2662,12 @@ src/common/dwarf/src_common_dumper_unittest-dwarf2reader_cfi_unittest.$(OBJEXT):
src/common/linux/src_common_dumper_unittest-dump_symbols.$(OBJEXT): \ src/common/linux/src_common_dumper_unittest-dump_symbols.$(OBJEXT): \
src/common/linux/$(am__dirstamp) \ src/common/linux/$(am__dirstamp) \
src/common/linux/$(DEPDIR)/$(am__dirstamp) src/common/linux/$(DEPDIR)/$(am__dirstamp)
src/common/linux/src_common_dumper_unittest-elf_symbols_to_module.$(OBJEXT): \
src/common/linux/$(am__dirstamp) \
src/common/linux/$(DEPDIR)/$(am__dirstamp)
src/common/linux/src_common_dumper_unittest-elf_symbols_to_module_unittest.$(OBJEXT): \
src/common/linux/$(am__dirstamp) \
src/common/linux/$(DEPDIR)/$(am__dirstamp)
src/common/linux/src_common_dumper_unittest-file_id.$(OBJEXT): \ src/common/linux/src_common_dumper_unittest-file_id.$(OBJEXT): \
src/common/linux/$(am__dirstamp) \ src/common/linux/$(am__dirstamp) \
src/common/linux/$(DEPDIR)/$(am__dirstamp) src/common/linux/$(DEPDIR)/$(am__dirstamp)
@ -3048,6 +3067,9 @@ src/common/dwarf/dwarf2reader.$(OBJEXT): \
src/common/linux/dump_symbols.$(OBJEXT): \ src/common/linux/dump_symbols.$(OBJEXT): \
src/common/linux/$(am__dirstamp) \ src/common/linux/$(am__dirstamp) \
src/common/linux/$(DEPDIR)/$(am__dirstamp) src/common/linux/$(DEPDIR)/$(am__dirstamp)
src/common/linux/elf_symbols_to_module.$(OBJEXT): \
src/common/linux/$(am__dirstamp) \
src/common/linux/$(DEPDIR)/$(am__dirstamp)
src/tools/linux/dump_syms/$(am__dirstamp): src/tools/linux/dump_syms/$(am__dirstamp):
@$(MKDIR_P) src/tools/linux/dump_syms @$(MKDIR_P) src/tools/linux/dump_syms
@: > src/tools/linux/dump_syms/$(am__dirstamp) @: > src/tools/linux/dump_syms/$(am__dirstamp)
@ -3123,10 +3145,13 @@ mostlyclean-compile:
-rm -f src/common/dwarf_line_to_module.$(OBJEXT) -rm -f src/common/dwarf_line_to_module.$(OBJEXT)
-rm -f src/common/language.$(OBJEXT) -rm -f src/common/language.$(OBJEXT)
-rm -f src/common/linux/dump_symbols.$(OBJEXT) -rm -f src/common/linux/dump_symbols.$(OBJEXT)
-rm -f src/common/linux/elf_symbols_to_module.$(OBJEXT)
-rm -f src/common/linux/file_id.$(OBJEXT) -rm -f src/common/linux/file_id.$(OBJEXT)
-rm -f src/common/linux/guid_creator.$(OBJEXT) -rm -f src/common/linux/guid_creator.$(OBJEXT)
-rm -f src/common/linux/http_upload.$(OBJEXT) -rm -f src/common/linux/http_upload.$(OBJEXT)
-rm -f src/common/linux/src_common_dumper_unittest-dump_symbols.$(OBJEXT) -rm -f src/common/linux/src_common_dumper_unittest-dump_symbols.$(OBJEXT)
-rm -f src/common/linux/src_common_dumper_unittest-elf_symbols_to_module.$(OBJEXT)
-rm -f src/common/linux/src_common_dumper_unittest-elf_symbols_to_module_unittest.$(OBJEXT)
-rm -f src/common/linux/src_common_dumper_unittest-file_id.$(OBJEXT) -rm -f src/common/linux/src_common_dumper_unittest-file_id.$(OBJEXT)
-rm -f src/common/linux/src_common_dumper_unittest-file_id_unittest.$(OBJEXT) -rm -f src/common/linux/src_common_dumper_unittest-file_id_unittest.$(OBJEXT)
-rm -f src/common/md5.$(OBJEXT) -rm -f src/common/md5.$(OBJEXT)
@ -3354,10 +3379,13 @@ distclean-compile:
@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.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_cfi_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)/dump_symbols.Po@am__quote@
@AMDEP_TRUE@@am__include@ @am__quote@src/common/linux/$(DEPDIR)/elf_symbols_to_module.Po@am__quote@
@AMDEP_TRUE@@am__include@ @am__quote@src/common/linux/$(DEPDIR)/file_id.Po@am__quote@ @AMDEP_TRUE@@am__include@ @am__quote@src/common/linux/$(DEPDIR)/file_id.Po@am__quote@
@AMDEP_TRUE@@am__include@ @am__quote@src/common/linux/$(DEPDIR)/guid_creator.Po@am__quote@ @AMDEP_TRUE@@am__include@ @am__quote@src/common/linux/$(DEPDIR)/guid_creator.Po@am__quote@
@AMDEP_TRUE@@am__include@ @am__quote@src/common/linux/$(DEPDIR)/http_upload.Po@am__quote@ @AMDEP_TRUE@@am__include@ @am__quote@src/common/linux/$(DEPDIR)/http_upload.Po@am__quote@
@AMDEP_TRUE@@am__include@ @am__quote@src/common/linux/$(DEPDIR)/src_common_dumper_unittest-dump_symbols.Po@am__quote@ @AMDEP_TRUE@@am__include@ @am__quote@src/common/linux/$(DEPDIR)/src_common_dumper_unittest-dump_symbols.Po@am__quote@
@AMDEP_TRUE@@am__include@ @am__quote@src/common/linux/$(DEPDIR)/src_common_dumper_unittest-elf_symbols_to_module.Po@am__quote@
@AMDEP_TRUE@@am__include@ @am__quote@src/common/linux/$(DEPDIR)/src_common_dumper_unittest-elf_symbols_to_module_unittest.Po@am__quote@
@AMDEP_TRUE@@am__include@ @am__quote@src/common/linux/$(DEPDIR)/src_common_dumper_unittest-file_id.Po@am__quote@ @AMDEP_TRUE@@am__include@ @am__quote@src/common/linux/$(DEPDIR)/src_common_dumper_unittest-file_id.Po@am__quote@
@AMDEP_TRUE@@am__include@ @am__quote@src/common/linux/$(DEPDIR)/src_common_dumper_unittest-file_id_unittest.Po@am__quote@ @AMDEP_TRUE@@am__include@ @am__quote@src/common/linux/$(DEPDIR)/src_common_dumper_unittest-file_id_unittest.Po@am__quote@
@AMDEP_TRUE@@am__include@ @am__quote@src/processor/$(DEPDIR)/address_map_unittest.Po@am__quote@ @AMDEP_TRUE@@am__include@ @am__quote@src/processor/$(DEPDIR)/address_map_unittest.Po@am__quote@
@ -4049,6 +4077,34 @@ src/common/linux/src_common_dumper_unittest-dump_symbols.obj: src/common/linux/d
@AMDEP_TRUE@@am__fastdepCXX_FALSE@ DEPDIR=$(DEPDIR) $(CXXDEPMODE) $(depcomp) @AMDEPBACKSLASH@ @AMDEP_TRUE@@am__fastdepCXX_FALSE@ DEPDIR=$(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/linux/src_common_dumper_unittest-dump_symbols.obj `if test -f 'src/common/linux/dump_symbols.cc'; then $(CYGPATH_W) 'src/common/linux/dump_symbols.cc'; else $(CYGPATH_W) '$(srcdir)/src/common/linux/dump_symbols.cc'; fi` @am__fastdepCXX_FALSE@ $(CXX) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(src_common_dumper_unittest_CPPFLAGS) $(CPPFLAGS) $(AM_CXXFLAGS) $(CXXFLAGS) -c -o src/common/linux/src_common_dumper_unittest-dump_symbols.obj `if test -f 'src/common/linux/dump_symbols.cc'; then $(CYGPATH_W) 'src/common/linux/dump_symbols.cc'; else $(CYGPATH_W) '$(srcdir)/src/common/linux/dump_symbols.cc'; fi`
src/common/linux/src_common_dumper_unittest-elf_symbols_to_module.o: src/common/linux/elf_symbols_to_module.cc
@am__fastdepCXX_TRUE@ $(CXX) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(src_common_dumper_unittest_CPPFLAGS) $(CPPFLAGS) $(AM_CXXFLAGS) $(CXXFLAGS) -MT src/common/linux/src_common_dumper_unittest-elf_symbols_to_module.o -MD -MP -MF src/common/linux/$(DEPDIR)/src_common_dumper_unittest-elf_symbols_to_module.Tpo -c -o src/common/linux/src_common_dumper_unittest-elf_symbols_to_module.o `test -f 'src/common/linux/elf_symbols_to_module.cc' || echo '$(srcdir)/'`src/common/linux/elf_symbols_to_module.cc
@am__fastdepCXX_TRUE@ $(am__mv) src/common/linux/$(DEPDIR)/src_common_dumper_unittest-elf_symbols_to_module.Tpo src/common/linux/$(DEPDIR)/src_common_dumper_unittest-elf_symbols_to_module.Po
@AMDEP_TRUE@@am__fastdepCXX_FALSE@ source='src/common/linux/elf_symbols_to_module.cc' object='src/common/linux/src_common_dumper_unittest-elf_symbols_to_module.o' libtool=no @AMDEPBACKSLASH@
@AMDEP_TRUE@@am__fastdepCXX_FALSE@ DEPDIR=$(DEPDIR) $(CXXDEPMODE) $(depcomp) @AMDEPBACKSLASH@
@am__fastdepCXX_FALSE@ $(CXX) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(src_common_dumper_unittest_CPPFLAGS) $(CPPFLAGS) $(AM_CXXFLAGS) $(CXXFLAGS) -c -o src/common/linux/src_common_dumper_unittest-elf_symbols_to_module.o `test -f 'src/common/linux/elf_symbols_to_module.cc' || echo '$(srcdir)/'`src/common/linux/elf_symbols_to_module.cc
src/common/linux/src_common_dumper_unittest-elf_symbols_to_module.obj: src/common/linux/elf_symbols_to_module.cc
@am__fastdepCXX_TRUE@ $(CXX) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(src_common_dumper_unittest_CPPFLAGS) $(CPPFLAGS) $(AM_CXXFLAGS) $(CXXFLAGS) -MT src/common/linux/src_common_dumper_unittest-elf_symbols_to_module.obj -MD -MP -MF src/common/linux/$(DEPDIR)/src_common_dumper_unittest-elf_symbols_to_module.Tpo -c -o src/common/linux/src_common_dumper_unittest-elf_symbols_to_module.obj `if test -f 'src/common/linux/elf_symbols_to_module.cc'; then $(CYGPATH_W) 'src/common/linux/elf_symbols_to_module.cc'; else $(CYGPATH_W) '$(srcdir)/src/common/linux/elf_symbols_to_module.cc'; fi`
@am__fastdepCXX_TRUE@ $(am__mv) src/common/linux/$(DEPDIR)/src_common_dumper_unittest-elf_symbols_to_module.Tpo src/common/linux/$(DEPDIR)/src_common_dumper_unittest-elf_symbols_to_module.Po
@AMDEP_TRUE@@am__fastdepCXX_FALSE@ source='src/common/linux/elf_symbols_to_module.cc' object='src/common/linux/src_common_dumper_unittest-elf_symbols_to_module.obj' libtool=no @AMDEPBACKSLASH@
@AMDEP_TRUE@@am__fastdepCXX_FALSE@ DEPDIR=$(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/linux/src_common_dumper_unittest-elf_symbols_to_module.obj `if test -f 'src/common/linux/elf_symbols_to_module.cc'; then $(CYGPATH_W) 'src/common/linux/elf_symbols_to_module.cc'; else $(CYGPATH_W) '$(srcdir)/src/common/linux/elf_symbols_to_module.cc'; fi`
src/common/linux/src_common_dumper_unittest-elf_symbols_to_module_unittest.o: src/common/linux/elf_symbols_to_module_unittest.cc
@am__fastdepCXX_TRUE@ $(CXX) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(src_common_dumper_unittest_CPPFLAGS) $(CPPFLAGS) $(AM_CXXFLAGS) $(CXXFLAGS) -MT src/common/linux/src_common_dumper_unittest-elf_symbols_to_module_unittest.o -MD -MP -MF src/common/linux/$(DEPDIR)/src_common_dumper_unittest-elf_symbols_to_module_unittest.Tpo -c -o src/common/linux/src_common_dumper_unittest-elf_symbols_to_module_unittest.o `test -f 'src/common/linux/elf_symbols_to_module_unittest.cc' || echo '$(srcdir)/'`src/common/linux/elf_symbols_to_module_unittest.cc
@am__fastdepCXX_TRUE@ $(am__mv) src/common/linux/$(DEPDIR)/src_common_dumper_unittest-elf_symbols_to_module_unittest.Tpo src/common/linux/$(DEPDIR)/src_common_dumper_unittest-elf_symbols_to_module_unittest.Po
@AMDEP_TRUE@@am__fastdepCXX_FALSE@ source='src/common/linux/elf_symbols_to_module_unittest.cc' object='src/common/linux/src_common_dumper_unittest-elf_symbols_to_module_unittest.o' libtool=no @AMDEPBACKSLASH@
@AMDEP_TRUE@@am__fastdepCXX_FALSE@ DEPDIR=$(DEPDIR) $(CXXDEPMODE) $(depcomp) @AMDEPBACKSLASH@
@am__fastdepCXX_FALSE@ $(CXX) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(src_common_dumper_unittest_CPPFLAGS) $(CPPFLAGS) $(AM_CXXFLAGS) $(CXXFLAGS) -c -o src/common/linux/src_common_dumper_unittest-elf_symbols_to_module_unittest.o `test -f 'src/common/linux/elf_symbols_to_module_unittest.cc' || echo '$(srcdir)/'`src/common/linux/elf_symbols_to_module_unittest.cc
src/common/linux/src_common_dumper_unittest-elf_symbols_to_module_unittest.obj: src/common/linux/elf_symbols_to_module_unittest.cc
@am__fastdepCXX_TRUE@ $(CXX) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(src_common_dumper_unittest_CPPFLAGS) $(CPPFLAGS) $(AM_CXXFLAGS) $(CXXFLAGS) -MT src/common/linux/src_common_dumper_unittest-elf_symbols_to_module_unittest.obj -MD -MP -MF src/common/linux/$(DEPDIR)/src_common_dumper_unittest-elf_symbols_to_module_unittest.Tpo -c -o src/common/linux/src_common_dumper_unittest-elf_symbols_to_module_unittest.obj `if test -f 'src/common/linux/elf_symbols_to_module_unittest.cc'; then $(CYGPATH_W) 'src/common/linux/elf_symbols_to_module_unittest.cc'; else $(CYGPATH_W) '$(srcdir)/src/common/linux/elf_symbols_to_module_unittest.cc'; fi`
@am__fastdepCXX_TRUE@ $(am__mv) src/common/linux/$(DEPDIR)/src_common_dumper_unittest-elf_symbols_to_module_unittest.Tpo src/common/linux/$(DEPDIR)/src_common_dumper_unittest-elf_symbols_to_module_unittest.Po
@AMDEP_TRUE@@am__fastdepCXX_FALSE@ source='src/common/linux/elf_symbols_to_module_unittest.cc' object='src/common/linux/src_common_dumper_unittest-elf_symbols_to_module_unittest.obj' libtool=no @AMDEPBACKSLASH@
@AMDEP_TRUE@@am__fastdepCXX_FALSE@ DEPDIR=$(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/linux/src_common_dumper_unittest-elf_symbols_to_module_unittest.obj `if test -f 'src/common/linux/elf_symbols_to_module_unittest.cc'; then $(CYGPATH_W) 'src/common/linux/elf_symbols_to_module_unittest.cc'; else $(CYGPATH_W) '$(srcdir)/src/common/linux/elf_symbols_to_module_unittest.cc'; fi`
src/common/linux/src_common_dumper_unittest-file_id.o: src/common/linux/file_id.cc src/common/linux/src_common_dumper_unittest-file_id.o: src/common/linux/file_id.cc
@am__fastdepCXX_TRUE@ $(CXX) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(src_common_dumper_unittest_CPPFLAGS) $(CPPFLAGS) $(AM_CXXFLAGS) $(CXXFLAGS) -MT src/common/linux/src_common_dumper_unittest-file_id.o -MD -MP -MF src/common/linux/$(DEPDIR)/src_common_dumper_unittest-file_id.Tpo -c -o src/common/linux/src_common_dumper_unittest-file_id.o `test -f 'src/common/linux/file_id.cc' || echo '$(srcdir)/'`src/common/linux/file_id.cc @am__fastdepCXX_TRUE@ $(CXX) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(src_common_dumper_unittest_CPPFLAGS) $(CPPFLAGS) $(AM_CXXFLAGS) $(CXXFLAGS) -MT src/common/linux/src_common_dumper_unittest-file_id.o -MD -MP -MF src/common/linux/$(DEPDIR)/src_common_dumper_unittest-file_id.Tpo -c -o src/common/linux/src_common_dumper_unittest-file_id.o `test -f 'src/common/linux/file_id.cc' || echo '$(srcdir)/'`src/common/linux/file_id.cc
@am__fastdepCXX_TRUE@ $(am__mv) src/common/linux/$(DEPDIR)/src_common_dumper_unittest-file_id.Tpo src/common/linux/$(DEPDIR)/src_common_dumper_unittest-file_id.Po @am__fastdepCXX_TRUE@ $(am__mv) src/common/linux/$(DEPDIR)/src_common_dumper_unittest-file_id.Tpo src/common/linux/$(DEPDIR)/src_common_dumper_unittest-file_id.Po

56
src/common/linux/dump_symbols.cc
View file

@ -56,6 +56,7 @@
#include "common/dwarf_cfi_to_module.h" #include "common/dwarf_cfi_to_module.h"
#include "common/dwarf_cu_to_module.h" #include "common/dwarf_cu_to_module.h"
#include "common/dwarf_line_to_module.h" #include "common/dwarf_line_to_module.h"
#include "common/linux/elf_symbols_to_module.h"
#include "common/linux/file_id.h" #include "common/linux/file_id.h"
#include "common/module.h" #include "common/module.h"
#include "common/stabs_reader.h" #include "common/stabs_reader.h"
@ -531,6 +532,7 @@ static bool LoadSymbols(const std::string &obj_file,
reinterpret_cast<ElfW(Shdr) *>(elf_header->e_shoff); reinterpret_cast<ElfW(Shdr) *>(elf_header->e_shoff);
const ElfW(Shdr) *section_names = sections + elf_header->e_shstrndx; const ElfW(Shdr) *section_names = sections + elf_header->e_shstrndx;
bool found_debug_info_section = false; bool found_debug_info_section = false;
bool found_usable_info = false;
// Look for STABS debugging information, and load it if present. // Look for STABS debugging information, and load it if present.
const ElfW(Shdr) *stab_section const ElfW(Shdr) *stab_section
@ -540,6 +542,7 @@ static bool LoadSymbols(const std::string &obj_file,
const ElfW(Shdr) *stabstr_section = stab_section->sh_link + sections; const ElfW(Shdr) *stabstr_section = stab_section->sh_link + sections;
if (stabstr_section) { if (stabstr_section) {
found_debug_info_section = true; found_debug_info_section = true;
found_usable_info = true;
info->LoadedSection(".stab"); info->LoadedSection(".stab");
if (!LoadStabs(elf_header, stab_section, stabstr_section, big_endian, if (!LoadStabs(elf_header, stab_section, stabstr_section, big_endian,
module)) { module)) {
@ -555,6 +558,7 @@ static bool LoadSymbols(const std::string &obj_file,
elf_header->e_shnum); elf_header->e_shnum);
if (dwarf_section) { if (dwarf_section) {
found_debug_info_section = true; found_debug_info_section = true;
found_usable_info = true;
info->LoadedSection(".debug_info"); info->LoadedSection(".debug_info");
if (!LoadDwarf(obj_file, elf_header, big_endian, module)) if (!LoadDwarf(obj_file, elf_header, big_endian, module))
fprintf(stderr, "%s: \".debug_info\" section found, but failed to load " fprintf(stderr, "%s: \".debug_info\" section found, but failed to load "
@ -571,8 +575,10 @@ static bool LoadSymbols(const std::string &obj_file,
// information, the other debugging information could be perfectly // information, the other debugging information could be perfectly
// useful. // useful.
info->LoadedSection(".debug_frame"); info->LoadedSection(".debug_frame");
LoadDwarfCFI(obj_file, elf_header, ".debug_frame", bool result =
dwarf_cfi_section, false, 0, 0, big_endian, module); LoadDwarfCFI(obj_file, elf_header, ".debug_frame",
dwarf_cfi_section, false, 0, 0, big_endian, module);
found_usable_info = found_usable_info || result;
} }
// Linux C++ exception handling information can also provide // Linux C++ exception handling information can also provide
@ -590,8 +596,10 @@ static bool LoadSymbols(const std::string &obj_file,
elf_header->e_shnum); elf_header->e_shnum);
info->LoadedSection(".eh_frame"); info->LoadedSection(".eh_frame");
// As above, ignore the return value of this function. // As above, ignore the return value of this function.
LoadDwarfCFI(obj_file, elf_header, ".eh_frame", eh_frame_section, true, bool result =
got_section, text_section, big_endian, module); LoadDwarfCFI(obj_file, elf_header, ".eh_frame", eh_frame_section, true,
got_section, text_section, big_endian, module);
found_usable_info = found_usable_info || result;
} }
if (!found_debug_info_section) { if (!found_debug_info_section) {
@ -617,7 +625,44 @@ static bool LoadSymbols(const std::string &obj_file,
fprintf(stderr, "%s does not contain a .gnu_debuglink section.\n", fprintf(stderr, "%s does not contain a .gnu_debuglink section.\n",
obj_file.c_str()); obj_file.c_str());
} }
} else {
// The caller doesn't want to consult .gnu_debuglink.
// See if there are export symbols available.
const ElfW(Shdr) *dynsym_section =
FindSectionByName(".dynsym", sections, section_names,
elf_header->e_shnum);
const ElfW(Shdr) *dynstr_section =
FindSectionByName(".dynstr", sections, section_names,
elf_header->e_shnum);
if (dynsym_section && dynstr_section) {
info->LoadedSection(".dynsym");
fprintf(stderr, "Have .dynsym + .dynstr\n");
uint8_t* dynsyms =
reinterpret_cast<uint8_t*>(dynsym_section->sh_offset);
uint8_t* dynstrs =
reinterpret_cast<uint8_t*>(dynstr_section->sh_offset);
bool result =
ELFSymbolsToModule(dynsyms,
dynsym_section->sh_size,
dynstrs,
dynstr_section->sh_size,
big_endian,
// This could change to something more useful
// when support for dumping cross-architecture
// symbols is finished.
sizeof(ElfW(Addr)),
module);
found_usable_info = found_usable_info || result;
}
// Return true if some usable information was found, since
// the caller doesn't want to use .gnu_debuglink.
return found_usable_info;
} }
// No debug info was found, let the user try again with .gnu_debuglink
// if present.
return false; return false;
} }
@ -709,7 +754,8 @@ bool WriteSymbolFile(const std::string &obj_file,
LoadSymbolsInfo info(debug_dir); LoadSymbolsInfo info(debug_dir);
Module module(name, os, architecture, id); Module module(name, os, architecture, id);
if (!LoadSymbols(obj_file, big_endian, elf_header, true, &info, &module)) { if (!LoadSymbols(obj_file, big_endian, elf_header, !debug_dir.empty(),
&info, &module)) {
const std::string debuglink_file = info.debuglink_file(); const std::string debuglink_file = info.debuglink_file();
if (debuglink_file.empty()) if (debuglink_file.empty())
return false; return false;

168
src/common/linux/elf_symbols_to_module.cc Normal file
View file

@ -0,0 +1,168 @@
// -*- mode: c++ -*-
// Copyright (c) 2011 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: Ted Mielczarek <ted.mielczarek@gmail.com>
#include "common/linux/elf_symbols_to_module.h"
#include <elf.h>
#include <string.h>
#include "common/byte_cursor.h"
#include "common/module.h"
namespace google_breakpad {
class ELFSymbolIterator {
public:
// The contents of an ELF symbol, adjusted for the host's endianness,
// word size, and so on. Corresponds to the data in Elf32_Sym / Elf64_Sym.
struct Symbol {
// True if this iterator has reached the end of the symbol array. When
// this is set, the other members of this structure are not valid.
bool at_end;
// The number of this symbol within the list.
size_t index;
// The current symbol's name offset. This is the offset within the
// string table.
size_t name_offset;
// The current symbol's value, size, info and shndx fields.
uint64_t value;
uint64_t size;
unsigned char info;
uint16_t shndx;
};
// Create an ELFSymbolIterator walking the symbols in BUFFER. Treat the
// symbols as big-endian if BIG_ENDIAN is true, as little-endian
// otherwise. Assume each symbol has a 'value' field whose size is
// VALUE_SIZE.
//
ELFSymbolIterator(const ByteBuffer *buffer, bool big_endian,
size_t value_size)
: value_size_(value_size), cursor_(buffer, big_endian) {
// Actually, weird sizes could be handled just fine, but they're
// probably mistakes --- expressed in bits, say.
assert(value_size == 4 || value_size == 8);
symbol_.index = 0;
Fetch();
}
// Move to the next symbol. This function's behavior is undefined if
// at_end() is true when it is called.
ELFSymbolIterator &operator++() { Fetch(); symbol_.index++; return *this; }
// Dereferencing this iterator produces a reference to an Symbol structure
// that holds the current symbol's values. The symbol is owned by this
// SymbolIterator, and will be invalidated at the next call to operator++.
const Symbol &operator*() const { return symbol_; }
const Symbol *operator->() const { return &symbol_; }
private:
// Read the symbol at cursor_, and set symbol_ appropriately.
void Fetch() {
// Elf32_Sym and Elf64_Sym have different layouts.
unsigned char other;
if (value_size_ == 4) {
// Elf32_Sym
cursor_
.Read(4, false, &symbol_.name_offset)
.Read(4, false, &symbol_.value)
.Read(4, false, &symbol_.size)
.Read(1, false, &symbol_.info)
.Read(1, false, &other)
.Read(2, false, &symbol_.shndx);
} else {
// Elf64_Sym
cursor_
.Read(4, false, &symbol_.name_offset)
.Read(1, false, &symbol_.info)
.Read(1, false, &other)
.Read(2, false, &symbol_.shndx)
.Read(8, false, &symbol_.value)
.Read(8, false, &symbol_.size);
}
symbol_.at_end = !cursor_;
}
// The size of symbols' value field, in bytes.
size_t value_size_;
// A byte cursor traversing buffer_.
ByteCursor cursor_;
// Values for the symbol this iterator refers to.
Symbol symbol_;
};
const char *SymbolString(ptrdiff_t offset, ByteBuffer& strings) {
if (offset < 0 || (size_t) offset >= strings.Size()) {
// Return the null string.
offset = 0;
}
return reinterpret_cast<const char *>(strings.start + offset);
}
bool ELFSymbolsToModule(const uint8_t *symtab_section,
size_t symtab_size,
const uint8_t *string_section,
size_t string_size,
const bool big_endian,
size_t value_size,
Module *module) {
ByteBuffer symbols(symtab_section, symtab_size);
// Ensure that the string section is null-terminated.
if (string_section[string_size - 1] != '\0') {
const void* null_terminator = memrchr(string_section, '\0', string_size);
string_size = reinterpret_cast<const uint8_t*>(null_terminator)
- string_section;
}
ByteBuffer strings(string_section, string_size);
// The iterator walking the symbol table.
ELFSymbolIterator iterator(&symbols, big_endian, value_size);
while(!iterator->at_end) {
if (ELF32_ST_TYPE(iterator->info) == STT_FUNC &&
iterator->shndx != SHN_UNDEF) {
Module::Extern *ext = new Module::Extern;
ext->name = SymbolString(iterator->name_offset, strings);
ext->address = iterator->value;
module->AddExtern(ext);
}
++iterator;
}
return true;
}
} // namespace google_breakpad

58
src/common/linux/elf_symbols_to_module.h Normal file
View file

@ -0,0 +1,58 @@
// -*- mode: c++ -*-
// Copyright (c) 2011 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: Ted Mielczarek <ted.mielczarek@gmail.com>
// elf_symbols_to_module.h: Exposes ELFSymbolsToModule, a function
// for reading ELF symbol tables and inserting exported symbol names
// into a google_breakpad::Module as Extern definitions.
#ifndef BREAKPAD_COMMON_LINUX_ELF_SYMBOLS_TO_MODULE_H_
#define BREAKPAD_COMMON_LINUX_ELF_SYMBOLS_TO_MODULE_H_
#include <stddef.h>
#include <stdint.h>
namespace google_breakpad {
class Module;
bool ELFSymbolsToModule(const uint8_t *symtab_section,
size_t symtab_size,
const uint8_t *string_section,
size_t string_size,
const bool big_endian,
size_t value_size,
Module *module);
} // namespace google_breakpad
#endif // BREAKPAD_COMMON_LINUX_ELF_SYMBOLS_TO_MODULE_H_

433
src/common/linux/elf_symbols_to_module_unittest.cc Normal file
View file

@ -0,0 +1,433 @@
// Copyright (c) 2011 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: Ted Mielczarek <ted.mielczarek@gmail.com>
// elf_symbols_to_module_unittest.cc:
// Unittests for google_breakpad::ELFSymbolsToModule
#include <elf.h>
#include <string>
#include <vector>
#include "breakpad_googletest_includes.h"
#include "common/linux/elf_symbols_to_module.h"
#include "common/module.h"
#include "common/test_assembler.h"
using google_breakpad::Module;
using google_breakpad::test_assembler::Endianness;
using google_breakpad::test_assembler::kBigEndian;
using google_breakpad::test_assembler::kLittleEndian;
using google_breakpad::test_assembler::kUnsetEndian;
using google_breakpad::test_assembler::Label;
using google_breakpad::test_assembler::Section;
using ::testing::Test;
using ::testing::TestWithParam;
using std::string;
using std::vector;
// String Tables are used in ELF headers, add a class
// for convenience.
class StringTable : public Section {
public:
StringTable(Endianness endianness = kUnsetEndian)
: Section(endianness) {
start() = 0;
empty_string = Add("");
}
// Add the string s to the string table, and return
// a label containing the offset into the string table
// at which it was added.
Label Add(const string& s) {
Label string_label(Here());
AppendCString(s);
return string_label;
}
// All StringTables contain an empty string as their first
// entry.
Label empty_string;
};
class StringTableTest : public Test {
public:
StringTableTest() : table(kLittleEndian) {}
StringTable table;
};
TEST_F(StringTableTest, Empty) {
string contents;
ASSERT_TRUE(table.GetContents(&contents));
const string kExpectedContents = "\0";
EXPECT_EQ(0,
memcmp(kExpectedContents.c_str(), contents.c_str(), table.Size()));
ASSERT_TRUE(table.empty_string.IsKnownConstant());
EXPECT_EQ(0, table.empty_string.Value());
}
TEST_F(StringTableTest, Basic) {
const string s1("table fills with strings");
const string s2("offsets preserved as labels");
const string s3("verified with tests");
const string kExpectedContents =
"\0table fills with strings\0"
"offsets preserved as labels\0"
"verified with tests\0";
Label l1(table.Add(s1));
Label l2(table.Add(s2));
Label l3(table.Add(s3));
string contents;
ASSERT_TRUE(table.GetContents(&contents));
EXPECT_EQ(0,
memcmp(kExpectedContents.c_str(), contents.c_str(), table.Size()));
// empty_string is at zero, other strings start at 1.
ASSERT_TRUE(l1.IsKnownConstant());
EXPECT_EQ(1, l1.Value());
// Each string has an extra byte for a trailing null.
EXPECT_EQ(1 + s1.length() + 1, l2.Value());
EXPECT_EQ(1 + s1.length() + 1 + s2.length() + 1, l3.Value());
}
class ELFSymbolsToModuleTestFixture {
public:
ELFSymbolsToModuleTestFixture(Endianness endianness,
size_t value_size) : module("a", "b", "c", "d"),
section(endianness),
table(endianness),
value_size(value_size) {}
bool ProcessSection() {
string section_contents, table_contents;
section.GetContents(&section_contents);
table.GetContents(&table_contents);
bool ret = ELFSymbolsToModule(reinterpret_cast<const uint8_t*>(section_contents.data()),
section_contents.size(),
reinterpret_cast<const uint8_t*>(table_contents.data()),
table_contents.size(),
section.endianness() == kBigEndian,
value_size,
&module);
module.GetExterns(&externs, externs.end());
return ret;
}
Module module;
Section section;
StringTable table;
string section_contents;
// 4 or 8 (bytes)
size_t value_size;
vector<Module::Extern *> externs;
};
class ELFSymbolsToModuleTest32 : public ELFSymbolsToModuleTestFixture,
public TestWithParam<Endianness> {
public:
ELFSymbolsToModuleTest32() : ELFSymbolsToModuleTestFixture(GetParam(), 4) {}
void AddElf32Sym(const string& name, uint32_t value,
uint32_t size, unsigned info, uint16_t shndx) {
section
.D32(table.Add(name))
.D32(value)
.D32(size)
.D8(info)
.D8(0) // other
.D16(shndx);
}
};
TEST_P(ELFSymbolsToModuleTest32, NoFuncs) {
ProcessSection();
ASSERT_EQ((size_t)0, externs.size());
}
TEST_P(ELFSymbolsToModuleTest32, OneFunc) {
const string kFuncName = "superfunc";
const uint32_t kFuncAddr = 0x1000;
const uint32_t kFuncSize = 0x10;
AddElf32Sym(kFuncName, kFuncAddr, kFuncSize,
ELF32_ST_INFO(STB_GLOBAL, STT_FUNC),
// Doesn't really matter, just can't be SHN_UNDEF.
SHN_UNDEF + 1);
ProcessSection();
ASSERT_EQ((size_t)1, externs.size());
Module::Extern *extern1 = externs[0];
EXPECT_EQ(kFuncName, extern1->name);
EXPECT_EQ((Module::Address)kFuncAddr, extern1->address);
}
TEST_P(ELFSymbolsToModuleTest32, NameOutOfBounds) {
const string kFuncName = "";
const uint32_t kFuncAddr = 0x1000;
const uint32_t kFuncSize = 0x10;
table.Add("Foo");
table.Add("Bar");
// Can't use AddElf32Sym because it puts in a valid string offset.
section
.D32((uint32_t)table.Here().Value() + 1)
.D32(kFuncAddr)
.D32(kFuncSize)
.D8(ELF32_ST_INFO(STB_GLOBAL, STT_FUNC))
.D8(0) // other
.D16(SHN_UNDEF + 1);
ProcessSection();
ASSERT_EQ((size_t)1, externs.size());
Module::Extern *extern1 = externs[0];
EXPECT_EQ(kFuncName, extern1->name);
EXPECT_EQ((Module::Address)kFuncAddr, extern1->address);
}
TEST_P(ELFSymbolsToModuleTest32, NonTerminatedStringTable) {
const string kFuncName = "";
const uint32_t kFuncAddr = 0x1000;
const uint32_t kFuncSize = 0x10;
table.Add("Foo");
table.Add("Bar");
// Add a non-null-terminated string to the end of the string table
Label l;
table
.Mark(&l)
.Append("Unterminated");
// Can't use AddElf32Sym because it puts in a valid string offset.
section
.D32((uint32_t)l.Value())
.D32(kFuncAddr)
.D32(kFuncSize)
.D8(ELF32_ST_INFO(STB_GLOBAL, STT_FUNC))
.D8(0) // other
.D16(SHN_UNDEF + 1);
ProcessSection();
ASSERT_EQ((size_t)1, externs.size());
Module::Extern *extern1 = externs[0];
EXPECT_EQ(kFuncName, extern1->name);
EXPECT_EQ((Module::Address)kFuncAddr, extern1->address);
}
TEST_P(ELFSymbolsToModuleTest32, MultipleFuncs) {
const string kFuncName1 = "superfunc";
const uint32_t kFuncAddr1 = 0x10001000;
const uint32_t kFuncSize1 = 0x10;
const string kFuncName2 = "awesomefunc";
const uint32_t kFuncAddr2 = 0x20002000;
const uint32_t kFuncSize2 = 0x2f;
const string kFuncName3 = "megafunc";
const uint32_t kFuncAddr3 = 0x30003000;
const uint32_t kFuncSize3 = 0x3c;
AddElf32Sym(kFuncName1, kFuncAddr1, kFuncSize1,
ELF32_ST_INFO(STB_GLOBAL, STT_FUNC),
// Doesn't really matter, just can't be SHN_UNDEF.
SHN_UNDEF + 1);
AddElf32Sym(kFuncName2, kFuncAddr2, kFuncSize2,
ELF32_ST_INFO(STB_LOCAL, STT_FUNC),
// Doesn't really matter, just can't be SHN_UNDEF.
SHN_UNDEF + 2);
AddElf32Sym(kFuncName3, kFuncAddr3, kFuncSize3,
ELF32_ST_INFO(STB_LOCAL, STT_FUNC),
// Doesn't really matter, just can't be SHN_UNDEF.
SHN_UNDEF + 3);
ProcessSection();
ASSERT_EQ((size_t)3, externs.size());
Module::Extern *extern1 = externs[0];
EXPECT_EQ(kFuncName1, extern1->name);
EXPECT_EQ((Module::Address)kFuncAddr1, extern1->address);
Module::Extern *extern2 = externs[1];
EXPECT_EQ(kFuncName2, extern2->name);
EXPECT_EQ((Module::Address)kFuncAddr2, extern2->address);
Module::Extern *extern3 = externs[2];
EXPECT_EQ(kFuncName3, extern3->name);
EXPECT_EQ((Module::Address)kFuncAddr3, extern3->address);
}
TEST_P(ELFSymbolsToModuleTest32, SkipStuff) {
const string kFuncName = "superfunc";
const uint32_t kFuncAddr = 0x1000;
const uint32_t kFuncSize = 0x10;
// Should skip functions in SHN_UNDEF
AddElf32Sym("skipme", 0xFFFF, 0x10,
ELF32_ST_INFO(STB_GLOBAL, STT_FUNC),
SHN_UNDEF);
AddElf32Sym(kFuncName, kFuncAddr, kFuncSize,
ELF32_ST_INFO(STB_GLOBAL, STT_FUNC),
// Doesn't really matter, just can't be SHN_UNDEF.
SHN_UNDEF + 1);
// Should skip non-STT_FUNC entries.
AddElf32Sym("skipmetoo", 0xAAAA, 0x10,
ELF32_ST_INFO(STB_GLOBAL, STT_FILE),
SHN_UNDEF + 1);
ProcessSection();
ASSERT_EQ((size_t)1, externs.size());
Module::Extern *extern1 = externs[0];
EXPECT_EQ(kFuncName, extern1->name);
EXPECT_EQ((Module::Address)kFuncAddr, extern1->address);
}
// Run all the 32-bit tests with both endianness
INSTANTIATE_TEST_CASE_P(Endian,
ELFSymbolsToModuleTest32,
::testing::Values(kLittleEndian, kBigEndian));
// Similar tests, but with 64-bit values. Ostensibly this could be
// shoehorned into the parameterization by using ::testing::Combine,
// but that would make it difficult to get the types right since these
// actual test cases aren't parameterized. This could also be written
// as a type-parameterized test, but combining that with a value-parameterized
// test seemed really ugly, and also makes it harder to test 64-bit
// values.
class ELFSymbolsToModuleTest64 : public ELFSymbolsToModuleTestFixture,
public TestWithParam<Endianness> {
public:
ELFSymbolsToModuleTest64() : ELFSymbolsToModuleTestFixture(GetParam(), 8) {}
void AddElf64Sym(const string& name, uint64_t value,
uint64_t size, unsigned info, uint16_t shndx) {
section
.D32(table.Add(name))
.D8(info)
.D8(0) // other
.D16(shndx)
.D64(value)
.D64(size);
}
};
TEST_P(ELFSymbolsToModuleTest64, NoFuncs) {
ProcessSection();
ASSERT_EQ((size_t)0, externs.size());
}
TEST_P(ELFSymbolsToModuleTest64, OneFunc) {
const string kFuncName = "superfunc";
const uint64_t kFuncAddr = 0x1000200030004000ULL;
const uint64_t kFuncSize = 0x1000;
AddElf64Sym(kFuncName, kFuncAddr, kFuncSize,
ELF64_ST_INFO(STB_GLOBAL, STT_FUNC),
// Doesn't really matter, just can't be SHN_UNDEF.
SHN_UNDEF + 1);
ProcessSection();
ASSERT_EQ((size_t)1, externs.size());
Module::Extern *extern1 = externs[0];
EXPECT_EQ(kFuncName, extern1->name);
EXPECT_EQ((Module::Address)kFuncAddr, extern1->address);
}
TEST_P(ELFSymbolsToModuleTest64, MultipleFuncs) {
const string kFuncName1 = "superfunc";
const uint64_t kFuncAddr1 = 0x1000100010001000ULL;
const uint64_t kFuncSize1 = 0x1000;
const string kFuncName2 = "awesomefunc";
const uint64_t kFuncAddr2 = 0x2000200020002000ULL;
const uint64_t kFuncSize2 = 0x2f00;
const string kFuncName3 = "megafunc";
const uint64_t kFuncAddr3 = 0x3000300030003000ULL;
const uint64_t kFuncSize3 = 0x3c00;
AddElf64Sym(kFuncName1, kFuncAddr1, kFuncSize1,
ELF64_ST_INFO(STB_GLOBAL, STT_FUNC),
// Doesn't really matter, just can't be SHN_UNDEF.
SHN_UNDEF + 1);
AddElf64Sym(kFuncName2, kFuncAddr2, kFuncSize2,
ELF64_ST_INFO(STB_LOCAL, STT_FUNC),
// Doesn't really matter, just can't be SHN_UNDEF.
SHN_UNDEF + 2);
AddElf64Sym(kFuncName3, kFuncAddr3, kFuncSize3,
ELF64_ST_INFO(STB_LOCAL, STT_FUNC),
// Doesn't really matter, just can't be SHN_UNDEF.
SHN_UNDEF + 3);
ProcessSection();
ASSERT_EQ((size_t)3, externs.size());
Module::Extern *extern1 = externs[0];
EXPECT_EQ(kFuncName1, extern1->name);
EXPECT_EQ((Module::Address)kFuncAddr1, extern1->address);
Module::Extern *extern2 = externs[1];
EXPECT_EQ(kFuncName2, extern2->name);
EXPECT_EQ((Module::Address)kFuncAddr2, extern2->address);
Module::Extern *extern3 = externs[2];
EXPECT_EQ(kFuncName3, extern3->name);
EXPECT_EQ((Module::Address)kFuncAddr3, extern3->address);
}
TEST_P(ELFSymbolsToModuleTest64, SkipStuff) {
const string kFuncName = "superfunc";
const uint64_t kFuncAddr = 0x1000100010001000ULL;
const uint64_t kFuncSize = 0x1000;
// Should skip functions in SHN_UNDEF
AddElf64Sym("skipme", 0xFFFF, 0x10,
ELF64_ST_INFO(STB_GLOBAL, STT_FUNC),
SHN_UNDEF);
AddElf64Sym(kFuncName, kFuncAddr, kFuncSize,
ELF64_ST_INFO(STB_GLOBAL, STT_FUNC),
// Doesn't really matter, just can't be SHN_UNDEF.
SHN_UNDEF + 1);
// Should skip non-STT_FUNC entries.
AddElf64Sym("skipmetoo", 0xAAAA, 0x10,
ELF64_ST_INFO(STB_GLOBAL, STT_FILE),
SHN_UNDEF + 1);
ProcessSection();
ASSERT_EQ((size_t)1, externs.size());
Module::Extern *extern1 = externs[0];
EXPECT_EQ(kFuncName, extern1->name);
EXPECT_EQ((Module::Address)kFuncAddr, extern1->address);
}
// Run all the 64-bit tests with both endianness
INSTANTIATE_TEST_CASE_P(Endian,
ELFSymbolsToModuleTest64,
::testing::Values(kLittleEndian, kBigEndian));