Better testing for Stackwalker (#18). r=bryner
- Test StackwalkerX86 and StackwalkerPPC on the current process, if built by a supported compiler (gcc) on a supported (walkable) CPU (x86, ppc). - This test is not enabled by default because of certain optimizations that interfere with it (stack frame reuse, frame pointer omission). See the comments at the top of stackwalker_selftest.cc. To enable this test in the standard "make check" suite, configure with --enable-selftest. http://groups.google.com/group/airbag-dev/browse_thread/thread/2ca1c8e72c809bec git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@35 4c0a9323-5329-0410-9bdc-e9ce6186880e
This commit is contained in:
mmentovai
parent
960e5277ee
commit
0dbedc973d
5 changed files with 394 additions and 27 deletions
16
Makefile.am
16
Makefile.am
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@ -89,9 +89,16 @@ check_PROGRAMS = \
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src/processor/postfix_evaluator_unittest \
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src/processor/range_map_unittest \
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src/processor/source_line_resolver_unittest
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if SELFTEST
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check_PROGRAMS += \
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src/processor/stackwalker_selftest
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endif SELFTEST
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check_SCRIPTS = \
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src/processor/minidump_dump_test \
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src/processor/minidump_stackwalk_test
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TESTS = $(check_PROGRAMS) $(check_SCRIPTS)
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TESTS_ENVIRONMENT =
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@ -119,6 +126,15 @@ src_processor_source_line_resolver_unittest_SOURCES = \
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src_processor_source_line_resolver_unittest_LDADD = \
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src/processor/source_line_resolver.lo
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src_processor_stackwalker_selftest_SOURCES = \
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src/processor/stackwalker_selftest.cc
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src_processor_stackwalker_selftest_LDADD = \
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src/processor/minidump.lo \
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src/processor/source_line_resolver.lo \
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src/processor/stackwalker.lo \
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src/processor/stackwalker_ppc.lo \
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src/processor/stackwalker_x86.lo
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## Non-installables
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noinst_PROGRAMS =
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noinst_SCRIPTS = $(check_SCRIPTS)
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43
Makefile.in
43
Makefile.in
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@ -74,7 +74,11 @@ check_PROGRAMS = src/processor/contained_range_map_unittest$(EXEEXT) \
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src/processor/minidump_processor_unittest$(EXEEXT) \
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src/processor/postfix_evaluator_unittest$(EXEEXT) \
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src/processor/range_map_unittest$(EXEEXT) \
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src/processor/source_line_resolver_unittest$(EXEEXT)
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src/processor/source_line_resolver_unittest$(EXEEXT) \
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$(am__EXEEXT_1)
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@SELFTEST_TRUE@am__append_1 = \
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@SELFTEST_TRUE@ src/processor/stackwalker_selftest
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noinst_PROGRAMS =
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DIST_COMMON = README $(am__configure_deps) $(dist_doc_DATA) \
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$(srcdir)/Makefile.am $(srcdir)/Makefile.in \
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@ -111,6 +115,8 @@ am_src_libairbag_la_OBJECTS = src/processor/minidump.lo \
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src/processor/stackwalker_x86.lo
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src_libairbag_la_OBJECTS = $(am_src_libairbag_la_OBJECTS)
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binPROGRAMS_INSTALL = $(INSTALL_PROGRAM)
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@SELFTEST_TRUE@am__EXEEXT_1 = \
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@SELFTEST_TRUE@ src/processor/stackwalker_selftest$(EXEEXT)
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PROGRAMS = $(bin_PROGRAMS) $(noinst_PROGRAMS)
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am_src_processor_contained_range_map_unittest_OBJECTS = \
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src/processor/contained_range_map_unittest.$(OBJEXT)
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@ -156,6 +162,15 @@ src_processor_source_line_resolver_unittest_OBJECTS = \
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$(am_src_processor_source_line_resolver_unittest_OBJECTS)
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src_processor_source_line_resolver_unittest_DEPENDENCIES = \
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src/processor/source_line_resolver.lo
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am_src_processor_stackwalker_selftest_OBJECTS = \
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src/processor/stackwalker_selftest.$(OBJEXT)
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src_processor_stackwalker_selftest_OBJECTS = \
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$(am_src_processor_stackwalker_selftest_OBJECTS)
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src_processor_stackwalker_selftest_DEPENDENCIES = \
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src/processor/minidump.lo \
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src/processor/source_line_resolver.lo \
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src/processor/stackwalker.lo src/processor/stackwalker_ppc.lo \
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src/processor/stackwalker_x86.lo
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SCRIPTS = $(noinst_SCRIPTS)
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DEFAULT_INCLUDES = -I. -I$(srcdir) -I$(top_builddir)/src
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depcomp = $(SHELL) $(top_srcdir)/autotools/depcomp
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@ -183,7 +198,8 @@ SOURCES = $(src_libairbag_la_SOURCES) \
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$(src_processor_minidump_stackwalk_SOURCES) \
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$(src_processor_postfix_evaluator_unittest_SOURCES) \
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$(src_processor_range_map_unittest_SOURCES) \
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$(src_processor_source_line_resolver_unittest_SOURCES)
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$(src_processor_source_line_resolver_unittest_SOURCES) \
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$(src_processor_stackwalker_selftest_SOURCES)
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DIST_SOURCES = $(src_libairbag_la_SOURCES) \
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$(src_processor_contained_range_map_unittest_SOURCES) \
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$(src_processor_minidump_dump_SOURCES) \
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@ -191,7 +207,8 @@ DIST_SOURCES = $(src_libairbag_la_SOURCES) \
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$(src_processor_minidump_stackwalk_SOURCES) \
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$(src_processor_postfix_evaluator_unittest_SOURCES) \
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$(src_processor_range_map_unittest_SOURCES) \
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$(src_processor_source_line_resolver_unittest_SOURCES)
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$(src_processor_source_line_resolver_unittest_SOURCES) \
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$(src_processor_stackwalker_selftest_SOURCES)
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dist_docDATA_INSTALL = $(INSTALL_DATA)
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DATA = $(dist_doc_DATA)
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ETAGS = etags
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@ -258,6 +275,8 @@ PACKAGE_TARNAME = @PACKAGE_TARNAME@
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PACKAGE_VERSION = @PACKAGE_VERSION@
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PATH_SEPARATOR = @PATH_SEPARATOR@
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RANLIB = @RANLIB@
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SELFTEST_FALSE = @SELFTEST_FALSE@
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SELFTEST_TRUE = @SELFTEST_TRUE@
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SET_MAKE = @SET_MAKE@
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SHELL = @SHELL@
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STRIP = @STRIP@
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@ -379,6 +398,16 @@ src_processor_source_line_resolver_unittest_SOURCES = \
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src_processor_source_line_resolver_unittest_LDADD = \
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src/processor/source_line_resolver.lo
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src_processor_stackwalker_selftest_SOURCES = \
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src/processor/stackwalker_selftest.cc
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src_processor_stackwalker_selftest_LDADD = \
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src/processor/minidump.lo \
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src/processor/source_line_resolver.lo \
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src/processor/stackwalker.lo \
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src/processor/stackwalker_ppc.lo \
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src/processor/stackwalker_x86.lo
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noinst_SCRIPTS = $(check_SCRIPTS)
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src_processor_minidump_dump_SOURCES = \
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src/processor/minidump_dump.cc
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@ -594,6 +623,12 @@ src/processor/source_line_resolver_unittest.$(OBJEXT): \
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src/processor/source_line_resolver_unittest$(EXEEXT): $(src_processor_source_line_resolver_unittest_OBJECTS) $(src_processor_source_line_resolver_unittest_DEPENDENCIES) src/processor/$(am__dirstamp)
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@rm -f src/processor/source_line_resolver_unittest$(EXEEXT)
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$(CXXLINK) $(src_processor_source_line_resolver_unittest_LDFLAGS) $(src_processor_source_line_resolver_unittest_OBJECTS) $(src_processor_source_line_resolver_unittest_LDADD) $(LIBS)
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src/processor/stackwalker_selftest.$(OBJEXT): \
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src/processor/$(am__dirstamp) \
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src/processor/$(DEPDIR)/$(am__dirstamp)
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src/processor/stackwalker_selftest$(EXEEXT): $(src_processor_stackwalker_selftest_OBJECTS) $(src_processor_stackwalker_selftest_DEPENDENCIES) src/processor/$(am__dirstamp)
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@rm -f src/processor/stackwalker_selftest$(EXEEXT)
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$(CXXLINK) $(src_processor_stackwalker_selftest_LDFLAGS) $(src_processor_stackwalker_selftest_OBJECTS) $(src_processor_stackwalker_selftest_LDADD) $(LIBS)
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mostlyclean-compile:
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-rm -f *.$(OBJEXT)
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@ -614,6 +649,7 @@ mostlyclean-compile:
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-rm -f src/processor/stackwalker.lo
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-rm -f src/processor/stackwalker_ppc.$(OBJEXT)
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-rm -f src/processor/stackwalker_ppc.lo
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-rm -f src/processor/stackwalker_selftest.$(OBJEXT)
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-rm -f src/processor/stackwalker_x86.$(OBJEXT)
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-rm -f src/processor/stackwalker_x86.lo
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@ -632,6 +668,7 @@ distclean-compile:
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@AMDEP_TRUE@@am__include@ @am__quote@src/processor/$(DEPDIR)/source_line_resolver_unittest.Po@am__quote@
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@AMDEP_TRUE@@am__include@ @am__quote@src/processor/$(DEPDIR)/stackwalker.Plo@am__quote@
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@AMDEP_TRUE@@am__include@ @am__quote@src/processor/$(DEPDIR)/stackwalker_ppc.Plo@am__quote@
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@AMDEP_TRUE@@am__include@ @am__quote@src/processor/$(DEPDIR)/stackwalker_selftest.Po@am__quote@
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@AMDEP_TRUE@@am__include@ @am__quote@src/processor/$(DEPDIR)/stackwalker_x86.Plo@am__quote@
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.cc.o:
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91
configure
vendored
91
configure
vendored
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@ -855,6 +855,8 @@ FFLAGS
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ac_ct_F77
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LIBTOOL
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LIBTOOL_DEPS
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SELFTEST_TRUE
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SELFTEST_FALSE
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LIBOBJS
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LTLIBOBJS'
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ac_subst_files=''
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@ -1458,6 +1460,8 @@ Optional Features:
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--enable-fast-install[=PKGS]
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optimize for fast installation [default=yes]
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--disable-libtool-lock avoid locking (might break parallel builds)
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--enable-selftest Run extra tests with "make check" (may conflict with
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optimizations) (default is no)
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Optional Packages:
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--with-PACKAGE[=ARG] use PACKAGE [ARG=yes]
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@ -5150,7 +5154,7 @@ ia64-*-hpux*)
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;;
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*-*-irix6*)
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# Find out which ABI we are using.
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echo '#line 5153 "configure"' > conftest.$ac_ext
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echo '#line 5157 "configure"' > conftest.$ac_ext
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if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
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(eval $ac_compile) 2>&5
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ac_status=$?
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@ -7315,11 +7319,11 @@ else
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-e 's:.*FLAGS}\{0,1\} :&$lt_compiler_flag :; t' \
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-e 's: [^ ]*conftest\.: $lt_compiler_flag&:; t' \
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-e 's:$: $lt_compiler_flag:'`
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(eval echo "\"\$as_me:7318: $lt_compile\"" >&5)
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(eval echo "\"\$as_me:7322: $lt_compile\"" >&5)
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(eval "$lt_compile" 2>conftest.err)
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ac_status=$?
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cat conftest.err >&5
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echo "$as_me:7322: \$? = $ac_status" >&5
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echo "$as_me:7326: \$? = $ac_status" >&5
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if (exit $ac_status) && test -s "$ac_outfile"; then
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# The compiler can only warn and ignore the option if not recognized
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# So say no if there are warnings other than the usual output.
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@ -7583,11 +7587,11 @@ else
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-e 's:.*FLAGS}\{0,1\} :&$lt_compiler_flag :; t' \
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-e 's: [^ ]*conftest\.: $lt_compiler_flag&:; t' \
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-e 's:$: $lt_compiler_flag:'`
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(eval echo "\"\$as_me:7586: $lt_compile\"" >&5)
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(eval echo "\"\$as_me:7590: $lt_compile\"" >&5)
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(eval "$lt_compile" 2>conftest.err)
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ac_status=$?
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cat conftest.err >&5
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echo "$as_me:7590: \$? = $ac_status" >&5
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echo "$as_me:7594: \$? = $ac_status" >&5
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if (exit $ac_status) && test -s "$ac_outfile"; then
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# The compiler can only warn and ignore the option if not recognized
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# So say no if there are warnings other than the usual output.
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@ -7687,11 +7691,11 @@ else
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-e 's:.*FLAGS}\{0,1\} :&$lt_compiler_flag :; t' \
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-e 's: [^ ]*conftest\.: $lt_compiler_flag&:; t' \
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-e 's:$: $lt_compiler_flag:'`
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(eval echo "\"\$as_me:7690: $lt_compile\"" >&5)
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(eval echo "\"\$as_me:7694: $lt_compile\"" >&5)
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(eval "$lt_compile" 2>out/conftest.err)
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ac_status=$?
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cat out/conftest.err >&5
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echo "$as_me:7694: \$? = $ac_status" >&5
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echo "$as_me:7698: \$? = $ac_status" >&5
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if (exit $ac_status) && test -s out/conftest2.$ac_objext
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then
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# The compiler can only warn and ignore the option if not recognized
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@ -10139,7 +10143,7 @@ else
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lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2
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lt_status=$lt_dlunknown
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cat > conftest.$ac_ext <<EOF
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#line 10142 "configure"
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#line 10146 "configure"
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#include "confdefs.h"
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#if HAVE_DLFCN_H
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@ -10239,7 +10243,7 @@ else
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lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2
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lt_status=$lt_dlunknown
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cat > conftest.$ac_ext <<EOF
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#line 10242 "configure"
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#line 10246 "configure"
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#include "confdefs.h"
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#if HAVE_DLFCN_H
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@ -12607,11 +12611,11 @@ else
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-e 's:.*FLAGS}\{0,1\} :&$lt_compiler_flag :; t' \
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-e 's: [^ ]*conftest\.: $lt_compiler_flag&:; t' \
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-e 's:$: $lt_compiler_flag:'`
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(eval echo "\"\$as_me:12610: $lt_compile\"" >&5)
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(eval echo "\"\$as_me:12614: $lt_compile\"" >&5)
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(eval "$lt_compile" 2>conftest.err)
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ac_status=$?
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cat conftest.err >&5
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echo "$as_me:12614: \$? = $ac_status" >&5
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echo "$as_me:12618: \$? = $ac_status" >&5
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if (exit $ac_status) && test -s "$ac_outfile"; then
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# The compiler can only warn and ignore the option if not recognized
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# So say no if there are warnings other than the usual output.
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@ -12711,11 +12715,11 @@ else
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-e 's:.*FLAGS}\{0,1\} :&$lt_compiler_flag :; t' \
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-e 's: [^ ]*conftest\.: $lt_compiler_flag&:; t' \
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-e 's:$: $lt_compiler_flag:'`
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(eval echo "\"\$as_me:12714: $lt_compile\"" >&5)
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(eval echo "\"\$as_me:12718: $lt_compile\"" >&5)
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(eval "$lt_compile" 2>out/conftest.err)
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ac_status=$?
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cat out/conftest.err >&5
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echo "$as_me:12718: \$? = $ac_status" >&5
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echo "$as_me:12722: \$? = $ac_status" >&5
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if (exit $ac_status) && test -s out/conftest2.$ac_objext
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then
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# The compiler can only warn and ignore the option if not recognized
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@ -14281,11 +14285,11 @@ else
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-e 's:.*FLAGS}\{0,1\} :&$lt_compiler_flag :; t' \
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-e 's: [^ ]*conftest\.: $lt_compiler_flag&:; t' \
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-e 's:$: $lt_compiler_flag:'`
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(eval echo "\"\$as_me:14284: $lt_compile\"" >&5)
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(eval echo "\"\$as_me:14288: $lt_compile\"" >&5)
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(eval "$lt_compile" 2>conftest.err)
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ac_status=$?
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cat conftest.err >&5
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echo "$as_me:14288: \$? = $ac_status" >&5
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echo "$as_me:14292: \$? = $ac_status" >&5
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if (exit $ac_status) && test -s "$ac_outfile"; then
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# The compiler can only warn and ignore the option if not recognized
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# So say no if there are warnings other than the usual output.
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@ -14385,11 +14389,11 @@ else
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-e 's:.*FLAGS}\{0,1\} :&$lt_compiler_flag :; t' \
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-e 's: [^ ]*conftest\.: $lt_compiler_flag&:; t' \
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-e 's:$: $lt_compiler_flag:'`
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(eval echo "\"\$as_me:14388: $lt_compile\"" >&5)
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(eval echo "\"\$as_me:14392: $lt_compile\"" >&5)
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(eval "$lt_compile" 2>out/conftest.err)
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ac_status=$?
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cat out/conftest.err >&5
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echo "$as_me:14392: \$? = $ac_status" >&5
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echo "$as_me:14396: \$? = $ac_status" >&5
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if (exit $ac_status) && test -s out/conftest2.$ac_objext
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then
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# The compiler can only warn and ignore the option if not recognized
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@ -16615,11 +16619,11 @@ else
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-e 's:.*FLAGS}\{0,1\} :&$lt_compiler_flag :; t' \
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-e 's: [^ ]*conftest\.: $lt_compiler_flag&:; t' \
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-e 's:$: $lt_compiler_flag:'`
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(eval echo "\"\$as_me:16618: $lt_compile\"" >&5)
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(eval echo "\"\$as_me:16622: $lt_compile\"" >&5)
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(eval "$lt_compile" 2>conftest.err)
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ac_status=$?
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cat conftest.err >&5
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echo "$as_me:16622: \$? = $ac_status" >&5
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echo "$as_me:16626: \$? = $ac_status" >&5
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if (exit $ac_status) && test -s "$ac_outfile"; then
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# The compiler can only warn and ignore the option if not recognized
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# So say no if there are warnings other than the usual output.
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@ -16883,11 +16887,11 @@ else
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-e 's:.*FLAGS}\{0,1\} :&$lt_compiler_flag :; t' \
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-e 's: [^ ]*conftest\.: $lt_compiler_flag&:; t' \
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-e 's:$: $lt_compiler_flag:'`
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(eval echo "\"\$as_me:16886: $lt_compile\"" >&5)
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(eval echo "\"\$as_me:16890: $lt_compile\"" >&5)
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(eval "$lt_compile" 2>conftest.err)
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ac_status=$?
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cat conftest.err >&5
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echo "$as_me:16890: \$? = $ac_status" >&5
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echo "$as_me:16894: \$? = $ac_status" >&5
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if (exit $ac_status) && test -s "$ac_outfile"; then
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# The compiler can only warn and ignore the option if not recognized
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# So say no if there are warnings other than the usual output.
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||||
|
|
@ -16987,11 +16991,11 @@ else
|
|||
-e 's:.*FLAGS}\{0,1\} :&$lt_compiler_flag :; t' \
|
||||
-e 's: [^ ]*conftest\.: $lt_compiler_flag&:; t' \
|
||||
-e 's:$: $lt_compiler_flag:'`
|
||||
(eval echo "\"\$as_me:16990: $lt_compile\"" >&5)
|
||||
(eval echo "\"\$as_me:16994: $lt_compile\"" >&5)
|
||||
(eval "$lt_compile" 2>out/conftest.err)
|
||||
ac_status=$?
|
||||
cat out/conftest.err >&5
|
||||
echo "$as_me:16994: \$? = $ac_status" >&5
|
||||
echo "$as_me:16998: \$? = $ac_status" >&5
|
||||
if (exit $ac_status) && test -s out/conftest2.$ac_objext
|
||||
then
|
||||
# The compiler can only warn and ignore the option if not recognized
|
||||
|
|
@ -19875,6 +19879,36 @@ _ACEOF
|
|||
fi
|
||||
|
||||
|
||||
# Check whether --enable-selftest was given.
|
||||
if test "${enable_selftest+set}" = set; then
|
||||
enableval=$enable_selftest; case "${enableval}" in
|
||||
yes)
|
||||
selftest=true
|
||||
;;
|
||||
no)
|
||||
selftest=false
|
||||
;;
|
||||
*)
|
||||
{ { echo "$as_me:$LINENO: error: bad value ${enableval} for --enable-selftest" >&5
|
||||
echo "$as_me: error: bad value ${enableval} for --enable-selftest" >&2;}
|
||||
{ (exit 1); exit 1; }; }
|
||||
;;
|
||||
esac
|
||||
else
|
||||
selftest=false
|
||||
fi
|
||||
|
||||
|
||||
|
||||
if test x$selftest = xtrue; then
|
||||
SELFTEST_TRUE=
|
||||
SELFTEST_FALSE='#'
|
||||
else
|
||||
SELFTEST_TRUE='#'
|
||||
SELFTEST_FALSE=
|
||||
fi
|
||||
|
||||
|
||||
ac_config_files="$ac_config_files Makefile"
|
||||
|
||||
cat >confcache <<\_ACEOF
|
||||
|
|
@ -19994,6 +20028,13 @@ echo "$as_me: error: conditional \"am__fastdepCXX\" was never defined.
|
|||
Usually this means the macro was only invoked conditionally." >&2;}
|
||||
{ (exit 1); exit 1; }; }
|
||||
fi
|
||||
if test -z "${SELFTEST_TRUE}" && test -z "${SELFTEST_FALSE}"; then
|
||||
{ { echo "$as_me:$LINENO: error: conditional \"SELFTEST\" was never defined.
|
||||
Usually this means the macro was only invoked conditionally." >&5
|
||||
echo "$as_me: error: conditional \"SELFTEST\" was never defined.
|
||||
Usually this means the macro was only invoked conditionally." >&2;}
|
||||
{ (exit 1); exit 1; }; }
|
||||
fi
|
||||
|
||||
: ${CONFIG_STATUS=./config.status}
|
||||
ac_clean_files_save=$ac_clean_files
|
||||
|
|
@ -20654,11 +20695,13 @@ FFLAGS!$FFLAGS$ac_delim
|
|||
ac_ct_F77!$ac_ct_F77$ac_delim
|
||||
LIBTOOL!$LIBTOOL$ac_delim
|
||||
LIBTOOL_DEPS!$LIBTOOL_DEPS$ac_delim
|
||||
SELFTEST_TRUE!$SELFTEST_TRUE$ac_delim
|
||||
SELFTEST_FALSE!$SELFTEST_FALSE$ac_delim
|
||||
LIBOBJS!$LIBOBJS$ac_delim
|
||||
LTLIBOBJS!$LTLIBOBJS$ac_delim
|
||||
_ACEOF
|
||||
|
||||
if test `sed -n "s/.*$ac_delim\$/X/p" conf$$subs.sed | grep -c X` = 6; then
|
||||
if test `sed -n "s/.*$ac_delim\$/X/p" conf$$subs.sed | grep -c X` = 8; then
|
||||
break
|
||||
elif $ac_last_try; then
|
||||
{ { echo "$as_me:$LINENO: error: could not make $CONFIG_STATUS" >&5
|
||||
|
|
|
|||
19
configure.ac
19
configure.ac
|
|
@ -47,5 +47,24 @@ AC_SUBST(LIBTOOL_DEPS)
|
|||
|
||||
AC_HEADER_STDC
|
||||
|
||||
AC_ARG_ENABLE(selftest,
|
||||
AS_HELP_STRING([--enable-selftest],
|
||||
[Run extra tests with "make check" ]
|
||||
[(may conflict with optimizations) ]
|
||||
[(default is no)]),
|
||||
[case "${enableval}" in
|
||||
yes)
|
||||
selftest=true
|
||||
;;
|
||||
no)
|
||||
selftest=false
|
||||
;;
|
||||
*)
|
||||
AC_MSG_ERROR(bad value ${enableval} for --enable-selftest)
|
||||
;;
|
||||
esac],
|
||||
[selftest=false])
|
||||
AM_CONDITIONAL(SELFTEST, test x$selftest = xtrue)
|
||||
|
||||
AC_CONFIG_FILES([Makefile])
|
||||
AC_OUTPUT
|
||||
|
|
|
|||
252
src/processor/stackwalker_selftest.cc
Normal file
252
src/processor/stackwalker_selftest.cc
Normal file
|
|
@ -0,0 +1,252 @@
|
|||
// Copyright (C) 2006 Google Inc.
|
||||
//
|
||||
// Licensed under the Apache License, Version 2.0 (the "License");
|
||||
// you may not use this file except in compliance with the License.
|
||||
// You may obtain a copy of the License at
|
||||
//
|
||||
// http://www.apache.org/licenses/LICENSE-2.0
|
||||
//
|
||||
// Unless required by applicable law or agreed to in writing, software
|
||||
// distributed under the License is distributed on an "AS IS" BASIS,
|
||||
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||
// See the License for the specific language governing permissions and
|
||||
// limitations under the License.
|
||||
|
||||
// stackwalker_selftest.cc: Tests StackwalkerX86 or StackwalkerPPC using the
|
||||
// running process' stack as test data, if running on an x86 or ppc and
|
||||
// compiled with gcc. This test is not enabled in the "make check" suite
|
||||
// by default, because certain optimizations interfere with its proper
|
||||
// operation. To turn it on, configure with --enable-selftest.
|
||||
//
|
||||
// Optimizations that cause problems:
|
||||
// - stack frame reuse. The Recursor function here calls itself with
|
||||
// |return Recursor|. When the caller's frame is reused, it will cause
|
||||
// CountCallerFrames to correctly return the same number of frames
|
||||
// in both the caller and callee. This is considered an unexpected
|
||||
// condition in the test, which expects a callee to have one more
|
||||
// caller frame in the stack than its caller.
|
||||
// - frame pointer omission. Even with a stackwalker that understands
|
||||
// this optimization, the code to harness debug information currently
|
||||
// only exists to retrieve it from minidumps, not the current process.
|
||||
//
|
||||
// This test can also serve as a developmental and debugging aid if
|
||||
// PRINT_STACKS is defined.
|
||||
//
|
||||
// Author: Mark Mentovai
|
||||
|
||||
#if defined(__GNUC__) && (defined(__i386__) || defined(__ppc__))
|
||||
|
||||
|
||||
#include <cstdio>
|
||||
|
||||
#include "google/airbag_types.h"
|
||||
#include "google/stack_frame.h"
|
||||
#include "processor/memory_region.h"
|
||||
#include "processor/minidump_format.h"
|
||||
|
||||
using google_airbag::MemoryRegion;
|
||||
using google_airbag::StackFrame;
|
||||
using google_airbag::StackFrames;
|
||||
|
||||
#if defined(__i386__)
|
||||
#include "processor/stackwalker_x86.h"
|
||||
using google_airbag::StackwalkerX86;
|
||||
#elif defined(__ppc__)
|
||||
#include "processor/stackwalker_ppc.h"
|
||||
using google_airbag::StackwalkerPPC;
|
||||
#endif // __i386__ || __ppc__
|
||||
|
||||
#define RECURSION_DEPTH 100
|
||||
|
||||
|
||||
// A simple MemoryRegion subclass that provides direct access to this
|
||||
// process' memory space by pointer.
|
||||
class SelfMemoryRegion : public MemoryRegion {
|
||||
public:
|
||||
virtual u_int64_t GetBase() { return 0; }
|
||||
virtual u_int32_t GetSize() { return 0xffffffff; }
|
||||
|
||||
bool GetMemoryAtAddress(u_int64_t address, u_int8_t* value) {
|
||||
return GetMemoryAtAddressInternal(address, value); }
|
||||
bool GetMemoryAtAddress(u_int64_t address, u_int16_t* value) {
|
||||
return GetMemoryAtAddressInternal(address, value); }
|
||||
bool GetMemoryAtAddress(u_int64_t address, u_int32_t* value) {
|
||||
return GetMemoryAtAddressInternal(address, value); }
|
||||
bool GetMemoryAtAddress(u_int64_t address, u_int64_t* value) {
|
||||
return GetMemoryAtAddressInternal(address, value); }
|
||||
|
||||
private:
|
||||
template<typename T> bool GetMemoryAtAddressInternal(u_int64_t address,
|
||||
T* value) {
|
||||
u_int8_t* memory = 0;
|
||||
*value = *reinterpret_cast<const T*>(&memory[address]);
|
||||
return true;
|
||||
}
|
||||
};
|
||||
|
||||
|
||||
#if defined(__i386__)
|
||||
|
||||
// GetEBP returns the current value of the %ebp register. Because it's
|
||||
// implemented as a function, %ebp itself contains GetEBP's frame pointer
|
||||
// and not the caller's frame pointer. Dereference %ebp to obtain the
|
||||
// caller's frame pointer, which the compiler-generated preamble stored
|
||||
// on the stack (provided frame pointers are not being omitted.) Because
|
||||
// this function depends on the compiler-generated preamble, inlining is
|
||||
// disabled.
|
||||
static u_int32_t GetEBP() __attribute__((noinline));
|
||||
static u_int32_t GetEBP() {
|
||||
u_int32_t ebp;
|
||||
__asm__ __volatile__(
|
||||
"movl (%%ebp), %0"
|
||||
: "=a" (ebp)
|
||||
);
|
||||
return ebp;
|
||||
}
|
||||
|
||||
|
||||
// GetEIP returns the instruction pointer identifying the next instruction
|
||||
// to execute after GetEIP returns. It obtains this information from the
|
||||
// stack, where it was placed by the call instruction that called GetEIP.
|
||||
// This function depends on frame pointers not being omitted. It is possible
|
||||
// to write a pure asm version of this routine that has no compiler-generated
|
||||
// preamble and uses %esp instead of %ebp; that would function in the
|
||||
// absence of frame pointers. However, the simpler approach is used here
|
||||
// because GetEBP and stackwalking necessarily depends on access to frame
|
||||
// pointers. Because this function depends on a call instruction and the
|
||||
// compiler-generated preamble, inlining is disabled.
|
||||
static u_int32_t GetEIP() __attribute__((noinline));
|
||||
static u_int32_t GetEIP() {
|
||||
u_int32_t eip;
|
||||
__asm__ __volatile__(
|
||||
"movl 4(%%ebp), %0"
|
||||
: "=a" (eip)
|
||||
);
|
||||
return eip;
|
||||
}
|
||||
|
||||
|
||||
#elif defined(__ppc__)
|
||||
|
||||
|
||||
// GetSP returns the current value of the %r1 register, which by convention,
|
||||
// is the stack pointer on ppc. Because it's implemented as a function,
|
||||
// %r1 itself contains GetSP's own stack pointer and not the caller's stack
|
||||
// pointer. Dereference %r1 to obtain the caller's stack pointer, which the
|
||||
// compiler-generated prolog stored on the stack. Because this function
|
||||
// depends on the compiler-generated prolog, inlining is disabled.
|
||||
static u_int32_t GetSP() __attribute__((noinline));
|
||||
static u_int32_t GetSP() {
|
||||
u_int32_t sp;
|
||||
__asm__ __volatile__(
|
||||
"lwz %0, 0(r1)"
|
||||
: "=r" (sp)
|
||||
);
|
||||
return sp;
|
||||
}
|
||||
|
||||
|
||||
// GetPC returns the program counter identifying the next instruction to
|
||||
// execute after GetPC returns. It obtains this information from the
|
||||
// link register, where it was placed by the branch instruction that called
|
||||
// GetPC. Because this function depends on the caller's use of a branch
|
||||
// instruction, inlining is disabled.
|
||||
static u_int32_t GetPC() __attribute__((noinline));
|
||||
static u_int32_t GetPC() {
|
||||
u_int32_t lr;
|
||||
__asm__ __volatile__(
|
||||
"mflr %0"
|
||||
: "=r" (lr)
|
||||
);
|
||||
return lr;
|
||||
}
|
||||
|
||||
|
||||
#endif // __i386__ || __ppc__
|
||||
|
||||
|
||||
// CountCallerFrames returns the number of stack frames beneath the function
|
||||
// that called CountCallerFrames. Because this function's return value
|
||||
// is dependent on the size of the stack beneath it, inlining is disabled,
|
||||
// and any function that calls this should not be inlined either.
|
||||
static unsigned int CountCallerFrames() __attribute__((noinline));
|
||||
static unsigned int CountCallerFrames() {
|
||||
SelfMemoryRegion memory;
|
||||
|
||||
#if defined(__i386__)
|
||||
MDRawContextX86 context = MDRawContextX86();
|
||||
context.eip = GetEIP();
|
||||
context.ebp = GetEBP();
|
||||
|
||||
StackwalkerX86 stackwalker = StackwalkerX86(&context, &memory, NULL, NULL);
|
||||
#elif defined(__ppc__)
|
||||
MDRawContextPPC context = MDRawContextPPC();
|
||||
context.srr0 = GetPC();
|
||||
context.gpr[1] = GetSP();
|
||||
|
||||
StackwalkerPPC stackwalker = StackwalkerPPC(&context, &memory, NULL, NULL);
|
||||
#endif // __i386__ || __ppc__
|
||||
|
||||
StackFrames stack;
|
||||
stackwalker.Walk(&stack);
|
||||
|
||||
#ifdef PRINT_STACKS
|
||||
printf("\n");
|
||||
for(unsigned int frame_index = 0;
|
||||
frame_index < stack.size();
|
||||
++frame_index) {
|
||||
StackFrame *frame = &stack[frame_index];
|
||||
printf("frame %-3d instruction = 0x%08llx frame_pointer = 0x%08llx\n",
|
||||
frame_index, frame->instruction, frame->frame_pointer);
|
||||
}
|
||||
#endif // PRINT_STACKS
|
||||
|
||||
// Subtract 1 because the caller wants the number of frames beneath
|
||||
// itself. Because the caller called us, subract two for our frame and its
|
||||
// frame, which are included in stack->size().
|
||||
return stack.size() - 2;
|
||||
}
|
||||
|
||||
|
||||
// Recursor verifies that the number stack frames beneath itself is one more
|
||||
// than the number of stack frames beneath its parent. When depth frames
|
||||
// have been reached, Recursor stops checking and returns success. If the
|
||||
// frame count check fails at any depth, Recursor will stop and return false.
|
||||
// Because this calls CountCallerFrames, inlining is disabled.
|
||||
static bool Recursor(unsigned int depth, unsigned int parent_callers)
|
||||
__attribute__((noinline));
|
||||
static bool Recursor(unsigned int depth, unsigned int parent_callers) {
|
||||
unsigned int callers = CountCallerFrames();
|
||||
if (callers != parent_callers + 1)
|
||||
return false;
|
||||
|
||||
if (depth)
|
||||
return Recursor(depth - 1, callers);
|
||||
|
||||
// depth == 0
|
||||
return true;
|
||||
}
|
||||
|
||||
|
||||
// Because this calls CountCallerFrames, inlining is disabled - but because
|
||||
// it's main (and nobody calls it other than the entry point), it wouldn't
|
||||
// be inlined anyway.
|
||||
int main(int argc, char** argv) __attribute__((noinline));
|
||||
int main(int argc, char** argv) {
|
||||
return Recursor(RECURSION_DEPTH, CountCallerFrames()) ? 0 : 1;
|
||||
}
|
||||
|
||||
|
||||
#else // __GNUC__ && (__i386__ || __ppc__)
|
||||
// Not gcc? We use gcc's __asm__.
|
||||
// Not i386 or ppc? We can only test stacks we know how to walk.
|
||||
|
||||
|
||||
int main(int argc, char **argv) {
|
||||
// "make check" interprets an exit status of 77 to mean that the test is
|
||||
// not supported.
|
||||
return 77;
|
||||
}
|
||||
|
||||
|
||||
#endif // __GNUC__ && (__i386__ || __ppc__)
|
||||
Loading…
Reference in a new issue