diff options
| author | Ian Lance Taylor <iant@golang.org> | 2020-09-14 14:01:56 -0700 |
|---|---|---|
| committer | Ian Lance Taylor <iant@golang.org> | 2020-09-14 14:11:17 -0700 |
| commit | 05f40bc4c116ba48843728201bc7290a5e518598 (patch) | |
| tree | 98fc1d2937d6781d3e3f8c45492a87cdf3adae01 /libbacktrace | |
| parent | cd6743e9c412b35e4ec7d8ebd7df8b0eeece3f01 (diff) | |
libbacktrace: support MiniDebugInfo
libbacktrace/ChangeLog:
PR libbacktrace/93608
Add support for MiniDebugInfo.
* elf.c (struct elf_view): Define. Replace most uses of
backtrace_view with elf_view.
(elf_get_view): New static functions. Replace most calls of
backtrace_get_view with elf_get_view.
(elf_release_view): New static functions. Replace most calls of
backtrace_release_view with elf_release_view.
(elf_uncompress_failed): Rename from elf_zlib_failed. Change all
callers.
(LZMA_STATES, LZMA_POS_STATES, LZMA_DIST_STATES): Define.
(LZMA_DIST_SLOTS, LZMA_DIST_MODEL_START): Define.
(LZMA_DIST_MODEL_END, LZMA_FULL_DISTANCES): Define.
(LZMA_ALIGN_SIZE, LZMA_LEN_LOW_SYMBOLS): Define.
(LZMA_LEN_MID_SYMBOLS, LZMA_LEN_HIGH_SYMBOLS): Define.
(LZMA_LITERAL_CODERS_MAX, LZMA_LITERAL_CODER_SIZE): Define.
(LZMA_PROB_IS_MATCH_LEN, LZMA_PROB_IS_REP_LEN): Define.
(LZMA_PROB_IS_REP0_LEN, LZMA_PROB_IS_REP1_LEN): Define.
(LZMA_PROB_IS_REP2_LEN, LZMA_PROB_IS_REP0_LONG_LEN): Define.
(LZMA_PROB_DIST_SLOT_LEN, LZMA_PROB_DIST_SPECIAL_LEN): Define.
(LZMA_PROB_DIST_ALIGN_LEN): Define.
(LZMA_PROB_MATCH_LEN_CHOICE_LEN): Define.
(LZMA_PROB_MATCH_LEN_CHOICE2_LEN): Define.
(LZMA_PROB_MATCH_LEN_LOW_LEN): Define.
(LZMA_PROB_MATCH_LEN_MID_LEN): Define.
(LZMA_PROB_MATCH_LEN_HIGH_LEN): Define.
(LZMA_PROB_REP_LEN_CHOICE_LEN): Define.
(LZMA_PROB_REP_LEN_CHOICE2_LEN): Define.
(LZMA_PROB_REP_LEN_LOW_LEN): Define.
(LZMA_PROB_REP_LEN_MID_LEN): Define.
(LZMA_PROB_REP_LEN_HIGH_LEN): Define.
(LZMA_PROB_LITERAL_LEN): Define.
(LZMA_PROB_IS_MATCH_OFFSET, LZMA_PROB_IS_REP_OFFSET): Define.
(LZMA_PROB_IS_REP0_OFFSET, LZMA_PROB_IS_REP1_OFFSET): Define.
(LZMA_PROB_IS_REP2_OFFSET): Define.
(LZMA_PROB_IS_REP0_LONG_OFFSET): Define.
(LZMA_PROB_DIST_SLOT_OFFSET): Define.
(LZMA_PROB_DIST_SPECIAL_OFFSET): Define.
(LZMA_PROB_DIST_ALIGN_OFFSET): Define.
(LZMA_PROB_MATCH_LEN_CHOICE_OFFSET): Define.
(LZMA_PROB_MATCH_LEN_CHOICE2_OFFSET): Define.
(LZMA_PROB_MATCH_LEN_LOW_OFFSET): Define.
(LZMA_PROB_MATCH_LEN_MID_OFFSET): Define.
(LZMA_PROB_MATCH_LEN_HIGH_OFFSET): Define.
(LZMA_PROB_REP_LEN_CHOICE_OFFSET): Define.
(LZMA_PROB_REP_LEN_CHOICE2_OFFSET): Define.
(LZMA_PROB_REP_LEN_LOW_OFFSET): Define.
(LZMA_PROB_REP_LEN_MID_OFFSET): Define.
(LZMA_PROB_REP_LEN_HIGH_OFFSET): Define.
(LZMA_PROB_LITERAL_OFFSET): Define.
(LZMA_PROB_TOTAL_COUNT): Define.
(LZMA_IS_MATCH, LZMA_IS_REP, LZMA_IS_REP0): Define.
(LZMA_IS_REP1, LZMA_IS_REP2, LZMA_IS_REP0_LONG): Define.
(LZMA_DIST_SLOT, LZMA_DIST_SPECIAL, LZMA_DIST_ALIGN): Define.
(LZMA_MATCH_LEN_CHOICE, LZMA_MATCH_LEN_CHOICE2): Define.
(LZMA_MATCH_LEN_LOW, LZMA_MATCH_LEN_MID): Define.
(LZMA_MATCH_LEN_HIGH, LZMA_REP_LEN_CHOICE): Define.
(LZMA_REP_LEN_CHOICE2, LZMA_REP_LEN_LOW): Define.
(LZMA_REP_LEN_MID, LZMA_REP_LEN_HIGH, LZMA_LITERAL): Define.
(elf_lzma_varint): New static function.
(elf_lzma_range_normalize): New static function.
(elf_lzma_bit, elf_lzma_integer): New static functions.
(elf_lzma_reverse_integer): New static function.
(elf_lzma_len, elf_uncompress_lzma_block): New static functions.
(elf_uncompress_lzma): New static function.
(backtrace_uncompress_lzma): New function.
(elf_add): Add memory and memory_size parameters. Change all
callers. Look for .gnu_debugdata section, and, if found,
decompress it and use it for symbols and debug info. Permit the
descriptor parameter to be -1.
* internal.h (backtrace_uncompress_lzma): Declare.
* mtest.c: New file.
* xztest.c: New file.
* configure.ac: Check for nm, xz, and comm programs. Check for
liblzma library.
(HAVE_MINIDEBUG): Define.
* Makefile.am (mtest_SOURCES): Define.
(mtest_CFLAGS, mtest_LDADD): Define.
(TESTS): Add mtest_minidebug if HAVE_MINIDEBUG.
(%_minidebug): New pattern rule, if HAVE_MINIDEBUG.
(xztest_SOURCES, xztest_CFLAGS, xztest_LDADD): Define.
(xztest_alloc_SOURCES, xztest_alloc_CFLAGS): Define
(xztest_alloc_LDADD): Define.
(BUILDTESTS): Add mtest, xztest, xztest_alloc.
(CLEANFILES): Add files created by minidebug pattern.
(btest.lo): Correct INCDIR reference.
(mtest.lo, xztest.lo, ztest.lo): New targets.
* configure: Regenerate.
* config.h.in: Regenerate.
* Makefile.in: Regenerate.
Diffstat (limited to 'libbacktrace')
| -rw-r--r-- | libbacktrace/Makefile.am | 55 | ||||
| -rw-r--r-- | libbacktrace/Makefile.in | 163 | ||||
| -rw-r--r-- | libbacktrace/config.h.in | 3 | ||||
| -rwxr-xr-x | libbacktrace/configure | 224 | ||||
| -rw-r--r-- | libbacktrace/configure.ac | 15 | ||||
| -rw-r--r-- | libbacktrace/elf.c | 1701 | ||||
| -rw-r--r-- | libbacktrace/internal.h | 9 | ||||
| -rw-r--r-- | libbacktrace/mtest.c | 401 | ||||
| -rw-r--r-- | libbacktrace/xztest.c | 508 |
9 files changed, 2913 insertions, 166 deletions
diff --git a/libbacktrace/Makefile.am b/libbacktrace/Makefile.am index 6fc07498787..4d349386c9b 100644 --- a/libbacktrace/Makefile.am +++ b/libbacktrace/Makefile.am @@ -478,13 +478,61 @@ endif HAVE_DSYMUTIL endif +mtest_SOURCES = mtest.c testlib.c +mtest_CFLAGS = $(libbacktrace_TEST_CFLAGS) -O +mtest_LDADD = libbacktrace.la + +BUILDTESTS += mtest + +if HAVE_MINIDEBUG + +TESTS += mtest_minidebug + +%_minidebug: % + $(NM) -D $< -P --defined-only | $(AWK) '{ print $$1 }' | sort > $<.dsyms + $(NM) $< -P --defined-only | $(AWK) '{ if ($$2 == "T" || $$2 == "t" || $$2 == "D") print $$1 }' | sort > $<.fsyms + $(COMM) -13 $<.dsyms $<.fsyms > $<.keepsyms + $(OBJCOPY) --only-keep-debug $< $<.dbg + $(OBJCOPY) -S --remove-section .gdb_index --remove-section .comment --keep-symbols=$<.keepsyms $<.dbg $<.mdbg + $(OBJCOPY) --strip-all --remove-section ..comment $< $<.strip + rm -f $<.mdbg.xz + $(XZ) $<.mdbg + $(OBJCOPY) --add-section .gnu_debugdata=$<.mdbg.xz $<.strip + mv $<.strip $@ + +endif HAVE_MINIDEBUG + endif NATIVE +if HAVE_ELF + +xztest_SOURCES = xztest.c testlib.c +xztest_CFLAGS = $(libbacktrace_TEST_CFLAGS) -DSRCDIR=\"$(srcdir)\" +xztest_LDADD = libbacktrace.la + +xztest_alloc_SOURCES = $(xztest_SOURCES) +xztest_alloc_CFLAGS = $(xztest_CFLAGS) +xztest_alloc_LDADD = libbacktrace_alloc.la + +if HAVE_LIBLZMA +xztest_LDADD += -llzma +xztest_alloc_LDADD += -llzma +endif + +xztest_LDADD += $(CLOCK_GETTIME_LINK) +xztest_alloc_LDADD += $(CLOCK_GETTIME_LINK) + +BUILDTESTS += xztest xztest_alloc + +endif HAVE_ELF + check_PROGRAMS += $(BUILDTESTS) TESTS += $(BUILDTESTS) -CLEANFILES = $(TESTS) *.debug elf_for_test.c edtest2_build.c gen_edtest2_build +CLEANFILES = \ + $(TESTS) *.debug elf_for_test.c edtest2_build.c gen_edtest2_build \ + *.dsyms *.fsyms *.keepsyms *.dbg *.mdbg *.mdbg.xz *.strip clean-local: -rm -rf usr @@ -504,7 +552,7 @@ clean-local: INCDIR = $(top_srcdir)/../include alloc.lo: config.h backtrace.h internal.h backtrace.lo: config.h backtrace.h internal.h -btest.lo: (INCDIR)/filenames.h backtrace.h backtrace-supported.h +btest.lo: $(INCDIR)/filenames.h backtrace.h backtrace-supported.h dwarf.lo: config.h $(INCDIR)/dwarf2.h $(INCDIR)/dwarf2.def \ $(INCDIR)/filenames.h backtrace.h internal.h elf.lo: config.h backtrace.h internal.h @@ -512,6 +560,7 @@ fileline.lo: config.h backtrace.h internal.h macho.lo: config.h backtrace.h internal.h mmap.lo: config.h backtrace.h internal.h mmapio.lo: config.h backtrace.h internal.h +mtest.lo: backtrace.h backtrace-supported.h nounwind.lo: config.h internal.h pecoff.lo: config.h backtrace.h internal.h posix.lo: config.h backtrace.h internal.h @@ -523,5 +572,7 @@ stest.lo: config.h backtrace.h internal.h state.lo: config.h backtrace.h backtrace-supported.h internal.h unknown.lo: config.h backtrace.h internal.h xcoff.lo: config.h backtrace.h internal.h +xztest.lo: config.h backtrace.h backtrace-supported.h internal.h testlib.h +ztest.lo: config.h backtrace.h backtrace-supported.h internal.h testlib.h include $(top_srcdir)/../multilib.am diff --git a/libbacktrace/Makefile.in b/libbacktrace/Makefile.in index b244ca10a4a..201cee36d34 100644 --- a/libbacktrace/Makefile.in +++ b/libbacktrace/Makefile.in @@ -121,10 +121,10 @@ build_triplet = @build@ host_triplet = @host@ target_triplet = @target@ check_PROGRAMS = $(am__EXEEXT_1) $(am__EXEEXT_2) $(am__EXEEXT_3) \ - $(am__EXEEXT_12) + $(am__EXEEXT_14) TESTS = $(am__append_4) $(am__append_7) $(am__append_9) \ $(am__append_12) $(am__append_13) $(am__append_20) \ - $(am__EXEEXT_12) + $(am__append_25) $(am__EXEEXT_14) @HAVE_ELF_TRUE@@HAVE_OBJCOPY_DEBUGLINK_TRUE@@NATIVE_TRUE@am__append_1 = libbacktrace_elf_for_test.la @NATIVE_TRUE@am__append_2 = test_elf_32 test_elf_64 test_macho \ @NATIVE_TRUE@ test_xcoff_32 test_xcoff_64 test_pecoff \ @@ -157,6 +157,11 @@ TESTS = $(am__append_4) $(am__append_7) $(am__append_9) \ @HAVE_DWARF5_TRUE@@NATIVE_TRUE@am__append_22 = dwarf5 dwarf5_alloc @HAVE_DSYMUTIL_TRUE@@HAVE_DWARF5_TRUE@@NATIVE_TRUE@am__append_23 = dwarf5.dSYM \ @HAVE_DSYMUTIL_TRUE@@HAVE_DWARF5_TRUE@@NATIVE_TRUE@ dwarf5_alloc.dSYM +@NATIVE_TRUE@am__append_24 = mtest +@HAVE_MINIDEBUG_TRUE@@NATIVE_TRUE@am__append_25 = mtest_minidebug +@HAVE_ELF_TRUE@@HAVE_LIBLZMA_TRUE@am__append_26 = -llzma +@HAVE_ELF_TRUE@@HAVE_LIBLZMA_TRUE@am__append_27 = -llzma +@HAVE_ELF_TRUE@am__append_28 = xztest xztest_alloc subdir = . ACLOCAL_M4 = $(top_srcdir)/aclocal.m4 am__aclocal_m4_deps = $(top_srcdir)/../config/cet.m4 \ @@ -235,9 +240,12 @@ libbacktrace_noformat_la_OBJECTS = \ @HAVE_COMPRESSED_DEBUG_TRUE@@NATIVE_TRUE@ ctesta_alloc$(EXEEXT) @HAVE_DWARF5_TRUE@@NATIVE_TRUE@am__EXEEXT_11 = dwarf5$(EXEEXT) \ @HAVE_DWARF5_TRUE@@NATIVE_TRUE@ dwarf5_alloc$(EXEEXT) -am__EXEEXT_12 = $(am__EXEEXT_4) $(am__EXEEXT_5) $(am__EXEEXT_6) \ +@NATIVE_TRUE@am__EXEEXT_12 = mtest$(EXEEXT) +@HAVE_ELF_TRUE@am__EXEEXT_13 = xztest$(EXEEXT) xztest_alloc$(EXEEXT) +am__EXEEXT_14 = $(am__EXEEXT_4) $(am__EXEEXT_5) $(am__EXEEXT_6) \ $(am__EXEEXT_7) $(am__EXEEXT_8) $(am__EXEEXT_9) \ - $(am__EXEEXT_10) $(am__EXEEXT_11) + $(am__EXEEXT_10) $(am__EXEEXT_11) $(am__EXEEXT_12) \ + $(am__EXEEXT_13) @NATIVE_TRUE@am_allocfail_OBJECTS = allocfail-allocfail.$(OBJEXT) \ @NATIVE_TRUE@ allocfail-testlib.$(OBJEXT) allocfail_OBJECTS = $(am_allocfail_OBJECTS) @@ -355,6 +363,13 @@ edtest_alloc_OBJECTS = $(am_edtest_alloc_OBJECTS) edtest_alloc_LINK = $(LIBTOOL) $(AM_V_lt) --tag=CC $(AM_LIBTOOLFLAGS) \ $(LIBTOOLFLAGS) --mode=link $(CCLD) $(edtest_alloc_CFLAGS) \ $(CFLAGS) $(AM_LDFLAGS) $(LDFLAGS) -o $@ +@NATIVE_TRUE@am_mtest_OBJECTS = mtest-mtest.$(OBJEXT) \ +@NATIVE_TRUE@ mtest-testlib.$(OBJEXT) +mtest_OBJECTS = $(am_mtest_OBJECTS) +@NATIVE_TRUE@mtest_DEPENDENCIES = libbacktrace.la +mtest_LINK = $(LIBTOOL) $(AM_V_lt) --tag=CC $(AM_LIBTOOLFLAGS) \ + $(LIBTOOLFLAGS) --mode=link $(CCLD) $(mtest_CFLAGS) $(CFLAGS) \ + $(AM_LDFLAGS) $(LDFLAGS) -o $@ @NATIVE_TRUE@am_stest_OBJECTS = stest-stest.$(OBJEXT) stest_OBJECTS = $(am_stest_OBJECTS) @NATIVE_TRUE@stest_DEPENDENCIES = libbacktrace.la @@ -465,6 +480,23 @@ unittest_alloc_LINK = $(LIBTOOL) $(AM_V_lt) --tag=CC \ $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=link $(CCLD) \ $(unittest_alloc_CFLAGS) $(CFLAGS) $(AM_LDFLAGS) $(LDFLAGS) -o \ $@ +@HAVE_ELF_TRUE@am_xztest_OBJECTS = xztest-xztest.$(OBJEXT) \ +@HAVE_ELF_TRUE@ xztest-testlib.$(OBJEXT) +xztest_OBJECTS = $(am_xztest_OBJECTS) +@HAVE_ELF_TRUE@xztest_DEPENDENCIES = libbacktrace.la \ +@HAVE_ELF_TRUE@ $(am__DEPENDENCIES_1) $(am__DEPENDENCIES_1) +xztest_LINK = $(LIBTOOL) $(AM_V_lt) --tag=CC $(AM_LIBTOOLFLAGS) \ + $(LIBTOOLFLAGS) --mode=link $(CCLD) $(xztest_CFLAGS) $(CFLAGS) \ + $(AM_LDFLAGS) $(LDFLAGS) -o $@ +@HAVE_ELF_TRUE@am__objects_12 = xztest_alloc-xztest.$(OBJEXT) \ +@HAVE_ELF_TRUE@ xztest_alloc-testlib.$(OBJEXT) +@HAVE_ELF_TRUE@am_xztest_alloc_OBJECTS = $(am__objects_12) +xztest_alloc_OBJECTS = $(am_xztest_alloc_OBJECTS) +@HAVE_ELF_TRUE@xztest_alloc_DEPENDENCIES = libbacktrace_alloc.la \ +@HAVE_ELF_TRUE@ $(am__DEPENDENCIES_1) $(am__DEPENDENCIES_1) +xztest_alloc_LINK = $(LIBTOOL) $(AM_V_lt) --tag=CC $(AM_LIBTOOLFLAGS) \ + $(LIBTOOLFLAGS) --mode=link $(CCLD) $(xztest_alloc_CFLAGS) \ + $(CFLAGS) $(AM_LDFLAGS) $(LDFLAGS) -o $@ @HAVE_ELF_TRUE@@NATIVE_TRUE@am_ztest_OBJECTS = ztest-ztest.$(OBJEXT) \ @HAVE_ELF_TRUE@@NATIVE_TRUE@ ztest-testlib.$(OBJEXT) ztest_OBJECTS = $(am_ztest_OBJECTS) @@ -474,11 +506,11 @@ ztest_OBJECTS = $(am_ztest_OBJECTS) ztest_LINK = $(LIBTOOL) $(AM_V_lt) --tag=CC $(AM_LIBTOOLFLAGS) \ $(LIBTOOLFLAGS) --mode=link $(CCLD) $(ztest_CFLAGS) $(CFLAGS) \ $(AM_LDFLAGS) $(LDFLAGS) -o $@ -@HAVE_ELF_TRUE@@NATIVE_TRUE@am__objects_12 = \ +@HAVE_ELF_TRUE@@NATIVE_TRUE@am__objects_13 = \ @HAVE_ELF_TRUE@@NATIVE_TRUE@ ztest_alloc-ztest.$(OBJEXT) \ @HAVE_ELF_TRUE@@NATIVE_TRUE@ ztest_alloc-testlib.$(OBJEXT) @HAVE_ELF_TRUE@@NATIVE_TRUE@am_ztest_alloc_OBJECTS = \ -@HAVE_ELF_TRUE@@NATIVE_TRUE@ $(am__objects_12) +@HAVE_ELF_TRUE@@NATIVE_TRUE@ $(am__objects_13) ztest_alloc_OBJECTS = $(am_ztest_alloc_OBJECTS) @HAVE_ELF_TRUE@@NATIVE_TRUE@ztest_alloc_DEPENDENCIES = \ @HAVE_ELF_TRUE@@NATIVE_TRUE@ libbacktrace_alloc.la \ @@ -530,13 +562,14 @@ SOURCES = $(libbacktrace_la_SOURCES) $(EXTRA_libbacktrace_la_SOURCES) \ $(ctesta_alloc_SOURCES) $(ctestg_SOURCES) \ $(ctestg_alloc_SOURCES) $(dwarf5_SOURCES) \ $(dwarf5_alloc_SOURCES) $(edtest_SOURCES) \ - $(edtest_alloc_SOURCES) $(stest_SOURCES) \ + $(edtest_alloc_SOURCES) $(mtest_SOURCES) $(stest_SOURCES) \ $(stest_alloc_SOURCES) $(test_elf_32_SOURCES) \ $(test_elf_64_SOURCES) $(test_macho_SOURCES) \ $(test_pecoff_SOURCES) $(test_unknown_SOURCES) \ $(test_xcoff_32_SOURCES) $(test_xcoff_64_SOURCES) \ $(ttest_SOURCES) $(ttest_alloc_SOURCES) $(unittest_SOURCES) \ - $(unittest_alloc_SOURCES) $(ztest_SOURCES) \ + $(unittest_alloc_SOURCES) $(xztest_SOURCES) \ + $(xztest_alloc_SOURCES) $(ztest_SOURCES) \ $(ztest_alloc_SOURCES) am__can_run_installinfo = \ case $$AM_UPDATE_INFO_DIR in \ @@ -786,6 +819,7 @@ CC = @CC@ CET_HOST_FLAGS = @CET_HOST_FLAGS@ CFLAGS = @CFLAGS@ CLOCK_GETTIME_LINK = @CLOCK_GETTIME_LINK@ +COMM = @COMM@ CPP = @CPP@ CPPFLAGS = @CPPFLAGS@ CYGPATH_W = @CYGPATH_W@ @@ -844,6 +878,7 @@ STRIP = @STRIP@ VERSION = @VERSION@ VIEW_FILE = @VIEW_FILE@ WARN_FLAGS = @WARN_FLAGS@ +XZ = @XZ@ abs_builddir = @abs_builddir@ abs_srcdir = @abs_srcdir@ abs_top_builddir = @abs_top_builddir@ @@ -953,7 +988,8 @@ libbacktrace_la_DEPENDENCIES = $(libbacktrace_la_LIBADD) # Add a test to this variable if you want it to be built and run. BUILDTESTS = $(am__append_2) $(am__append_10) $(am__append_11) \ $(am__append_16) $(am__append_17) $(am__append_18) \ - $(am__append_21) $(am__append_22) + $(am__append_21) $(am__append_22) $(am__append_24) \ + $(am__append_28) # Add a file to this variable if you want it to be built for testing. check_DATA = $(am__append_5) $(am__append_19) $(am__append_23) @@ -1078,7 +1114,21 @@ libbacktrace_TEST_CFLAGS = $(EXTRA_FLAGS) $(WARN_FLAGS) -g @HAVE_DWARF5_TRUE@@NATIVE_TRUE@dwarf5_alloc_SOURCES = $(dwarf5_SOURCES) @HAVE_DWARF5_TRUE@@NATIVE_TRUE@dwarf5_alloc_CFLAGS = $(dwarf5_CFLAGS) @HAVE_DWARF5_TRUE@@NATIVE_TRUE@dwarf5_alloc_LDADD = libbacktrace_alloc.la -CLEANFILES = $(TESTS) *.debug elf_for_test.c edtest2_build.c gen_edtest2_build +@NATIVE_TRUE@mtest_SOURCES = mtest.c testlib.c +@NATIVE_TRUE@mtest_CFLAGS = $(libbacktrace_TEST_CFLAGS) -O +@NATIVE_TRUE@mtest_LDADD = libbacktrace.la +@HAVE_ELF_TRUE@xztest_SOURCES = xztest.c testlib.c +@HAVE_ELF_TRUE@xztest_CFLAGS = $(libbacktrace_TEST_CFLAGS) -DSRCDIR=\"$(srcdir)\" +@HAVE_ELF_TRUE@xztest_LDADD = libbacktrace.la $(am__append_26) \ +@HAVE_ELF_TRUE@ $(CLOCK_GETTIME_LINK) +@HAVE_ELF_TRUE@xztest_alloc_SOURCES = $(xztest_SOURCES) +@HAVE_ELF_TRUE@xztest_alloc_CFLAGS = $(xztest_CFLAGS) +@HAVE_ELF_TRUE@xztest_alloc_LDADD = libbacktrace_alloc.la \ +@HAVE_ELF_TRUE@ $(am__append_27) $(CLOCK_GETTIME_LINK) +CLEANFILES = \ + $(TESTS) *.debug elf_for_test.c edtest2_build.c gen_edtest2_build \ + *.dsyms *.fsyms *.keepsyms *.dbg *.mdbg *.mdbg.xz *.strip + # We can't use automake's automatic dependency tracking, because it # breaks when using bootstrap-lean. Automatic dependency tracking @@ -1259,6 +1309,10 @@ edtest_alloc$(EXEEXT): $(edtest_alloc_OBJECTS) $(edtest_alloc_DEPENDENCIES) $(EX @rm -f edtest_alloc$(EXEEXT) $(AM_V_CCLD)$(edtest_alloc_LINK) $(edtest_alloc_OBJECTS) $(edtest_alloc_LDADD) $(LIBS) +mtest$(EXEEXT): $(mtest_OBJECTS) $(mtest_DEPENDENCIES) $(EXTRA_mtest_DEPENDENCIES) + @rm -f mtest$(EXEEXT) + $(AM_V_CCLD)$(mtest_LINK) $(mtest_OBJECTS) $(mtest_LDADD) $(LIBS) + stest$(EXEEXT): $(stest_OBJECTS) $(stest_DEPENDENCIES) $(EXTRA_stest_DEPENDENCIES) @rm -f stest$(EXEEXT) $(AM_V_CCLD)$(stest_LINK) $(stest_OBJECTS) $(stest_LDADD) $(LIBS) @@ -1311,6 +1365,14 @@ unittest_alloc$(EXEEXT): $(unittest_alloc_OBJECTS) $(unittest_alloc_DEPENDENCIES @rm -f unittest_alloc$(EXEEXT) $(AM_V_CCLD)$(unittest_alloc_LINK) $(unittest_alloc_OBJECTS) $(unittest_alloc_LDADD) $(LIBS) +xztest$(EXEEXT): $(xztest_OBJECTS) $(xztest_DEPENDENCIES) $(EXTRA_xztest_DEPENDENCIES) + @rm -f xztest$(EXEEXT) + $(AM_V_CCLD)$(xztest_LINK) $(xztest_OBJECTS) $(xztest_LDADD) $(LIBS) + +xztest_alloc$(EXEEXT): $(xztest_alloc_OBJECTS) $(xztest_alloc_DEPENDENCIES) $(EXTRA_xztest_alloc_DEPENDENCIES) + @rm -f xztest_alloc$(EXEEXT) + $(AM_V_CCLD)$(xztest_alloc_LINK) $(xztest_alloc_OBJECTS) $(xztest_alloc_LDADD) $(LIBS) + ztest$(EXEEXT): $(ztest_OBJECTS) $(ztest_DEPENDENCIES) $(EXTRA_ztest_DEPENDENCIES) @rm -f ztest$(EXEEXT) $(AM_V_CCLD)$(ztest_LINK) $(ztest_OBJECTS) $(ztest_LDADD) $(LIBS) @@ -1514,6 +1576,18 @@ edtest_alloc-testlib.o: testlib.c edtest_alloc-testlib.obj: testlib.c $(AM_V_CC)$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(edtest_alloc_CFLAGS) $(CFLAGS) -c -o edtest_alloc-testlib.obj `if test -f 'testlib.c'; then $(CYGPATH_W) 'testlib.c'; else $(CYGPATH_W) '$(srcdir)/testlib.c'; fi` +mtest-mtest.o: mtest.c + $(AM_V_CC)$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(mtest_CFLAGS) $(CFLAGS) -c -o mtest-mtest.o `test -f 'mtest.c' || echo '$(srcdir)/'`mtest.c + +mtest-mtest.obj: mtest.c + $(AM_V_CC)$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(mtest_CFLAGS) $(CFLAGS) -c -o mtest-mtest.obj `if test -f 'mtest.c'; then $(CYGPATH_W) 'mtest.c'; else $(CYGPATH_W) '$(srcdir)/mtest.c'; fi` + +mtest-testlib.o: testlib.c + $(AM_V_CC)$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(mtest_CFLAGS) $(CFLAGS) -c -o mtest-testlib.o `test -f 'testlib.c' || echo '$(srcdir)/'`testlib.c + +mtest-testlib.obj: testlib.c + $(AM_V_CC)$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(mtest_CFLAGS) $(CFLAGS) -c -o mtest-testlib.obj `if test -f 'testlib.c'; then $(CYGPATH_W) 'testlib.c'; else $(CYGPATH_W) '$(srcdir)/testlib.c'; fi` + stest-stest.o: stest.c $(AM_V_CC)$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(stest_CFLAGS) $(CFLAGS) -c -o stest-stest.o `test -f 'stest.c' || echo '$(srcdir)/'`stest.c @@ -1658,6 +1732,30 @@ unittest_alloc-testlib.o: testlib.c unittest_alloc-testlib.obj: testlib.c $(AM_V_CC)$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(unittest_alloc_CFLAGS) $(CFLAGS) -c -o unittest_alloc-testlib.obj `if test -f 'testlib.c'; then $(CYGPATH_W) 'testlib.c'; else $(CYGPATH_W) '$(srcdir)/testlib.c'; fi` +xztest-xztest.o: xztest.c + $(AM_V_CC)$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(xztest_CFLAGS) $(CFLAGS) -c -o xztest-xztest.o `test -f 'xztest.c' || echo '$(srcdir)/'`xztest.c + +xztest-xztest.obj: xztest.c + $(AM_V_CC)$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(xztest_CFLAGS) $(CFLAGS) -c -o xztest-xztest.obj `if test -f 'xztest.c'; then $(CYGPATH_W) 'xztest.c'; else $(CYGPATH_W) '$(srcdir)/xztest.c'; fi` + +xztest-testlib.o: testlib.c + $(AM_V_CC)$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(xztest_CFLAGS) $(CFLAGS) -c -o xztest-testlib.o `test -f 'testlib.c' || echo '$(srcdir)/'`testlib.c + +xztest-testlib.obj: testlib.c + $(AM_V_CC)$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(xztest_CFLAGS) $(CFLAGS) -c -o xztest-testlib.obj `if test -f 'testlib.c'; then $(CYGPATH_W) 'testlib.c'; else $(CYGPATH_W) '$(srcdir)/testlib.c'; fi` + +xztest_alloc-xztest.o: xztest.c + $(AM_V_CC)$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(xztest_alloc_CFLAGS) $(CFLAGS) -c -o xztest_alloc-xztest.o `test -f 'xztest.c' || echo '$(srcdir)/'`xztest.c + +xztest_alloc-xztest.obj: xztest.c + $(AM_V_CC)$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(xztest_alloc_CFLAGS) $(CFLAGS) -c -o xztest_alloc-xztest.obj `if test -f 'xztest.c'; then $(CYGPATH_W) 'xztest.c'; else $(CYGPATH_W) '$(srcdir)/xztest.c'; fi` + +xztest_alloc-testlib.o: testlib.c + $(AM_V_CC)$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(xztest_alloc_CFLAGS) $(CFLAGS) -c -o xztest_alloc-testlib.o `test -f 'testlib.c' || echo '$(srcdir)/'`testlib.c + +xztest_alloc-testlib.obj: testlib.c + $(AM_V_CC)$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(xztest_alloc_CFLAGS) $(CFLAGS) -c -o xztest_alloc-testlib.obj `if test -f 'testlib.c'; then $(CYGPATH_W) 'testlib.c'; else $(CYGPATH_W) '$(srcdir)/testlib.c'; fi` + ztest-ztest.o: ztest.c $(AM_V_CC)$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(ztest_CFLAGS) $(CFLAGS) -c -o ztest-ztest.o `test -f 'ztest.c' || echo '$(srcdir)/'`ztest.c @@ -1933,6 +2031,13 @@ btest_gnudebuglink.log: btest_gnudebuglink --log-file $$b.log --trs-file $$b.trs \ $(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \ "$$tst" $(AM_TESTS_FD_REDIRECT) +mtest_minidebug.log: mtest_minidebug + @p='mtest_minidebug'; \ + b='mtest_minidebug'; \ + $(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \ + --log-file $$b.log --trs-file $$b.trs \ + $(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \ + "$$tst" $(AM_TESTS_FD_REDIRECT) test_elf_32.log: test_elf_32$(EXEEXT) @p='test_elf_32$(EXEEXT)'; \ b='test_elf_32'; \ @@ -2115,6 +2220,27 @@ dwarf5_alloc.log: dwarf5_alloc$(EXEEXT) --log-file $$b.log --trs-file $$b.trs \ $(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \ "$$tst" $(AM_TESTS_FD_REDIRECT) +mtest.log: mtest$(EXEEXT) + @p='mtest$(EXEEXT)'; \ + b='mtest'; \ + $(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \ + --log-file $$b.log --trs-file $$b.trs \ + $(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \ + "$$tst" $(AM_TESTS_FD_REDIRECT) +xztest.log: xztest$(EXEEXT) + @p='xztest$(EXEEXT)'; \ + b='xztest'; \ + $(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \ + --log-file $$b.log --trs-file $$b.trs \ + $(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \ + "$$tst" $(AM_TESTS_FD_REDIRECT) +xztest_alloc.log: xztest_alloc$(EXEEXT) + @p='xztest_alloc$(EXEEXT)'; \ + b='xztest_alloc'; \ + $(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \ + --log-file $$b.log --trs-file $$b.trs \ + $(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \ + "$$tst" $(AM_TESTS_FD_REDIRECT) .test.log: @p='$<'; \ $(am__set_b); \ @@ -2323,11 +2449,23 @@ uninstall-am: @NATIVE_TRUE@ $< @NATIVE_TRUE@ $(OBJCOPY) --strip-debug $< $@ +@HAVE_MINIDEBUG_TRUE@@NATIVE_TRUE@%_minidebug: % +@HAVE_MINIDEBUG_TRUE@@NATIVE_TRUE@ $(NM) -D $< -P --defined-only | $(AWK) '{ print $$1 }' | sort > $<.dsyms +@HAVE_MINIDEBUG_TRUE@@NATIVE_TRUE@ $(NM) $< -P --defined-only | $(AWK) '{ if ($$2 == "T" || $$2 == "t" || $$2 == "D") print $$1 }' | sort > $<.fsyms +@HAVE_MINIDEBUG_TRUE@@NATIVE_TRUE@ $(COMM) -13 $<.dsyms $<.fsyms > $<.keepsyms +@HAVE_MINIDEBUG_TRUE@@NATIVE_TRUE@ $(OBJCOPY) --only-keep-debug $< $<.dbg +@HAVE_MINIDEBUG_TRUE@@NATIVE_TRUE@ $(OBJCOPY) -S --remove-section .gdb_index --remove-section .comment --keep-symbols=$<.keepsyms $<.dbg $<.mdbg +@HAVE_MINIDEBUG_TRUE@@NATIVE_TRUE@ $(OBJCOPY) --strip-all --remove-section ..comment $< $<.strip +@HAVE_MINIDEBUG_TRUE@@NATIVE_TRUE@ rm -f $<.mdbg.xz +@HAVE_MINIDEBUG_TRUE@@NATIVE_TRUE@ $(XZ) $<.mdbg +@HAVE_MINIDEBUG_TRUE@@NATIVE_TRUE@ $(OBJCOPY) --add-section .gnu_debugdata=$<.mdbg.xz $<.strip +@HAVE_MINIDEBUG_TRUE@@NATIVE_TRUE@ mv $<.strip $@ + clean-local: -rm -rf usr alloc.lo: config.h backtrace.h internal.h backtrace.lo: config.h backtrace.h internal.h -btest.lo: (INCDIR)/filenames.h backtrace.h backtrace-supported.h +btest.lo: $(INCDIR)/filenames.h backtrace.h backtrace-supported.h dwarf.lo: config.h $(INCDIR)/dwarf2.h $(INCDIR)/dwarf2.def \ $(INCDIR)/filenames.h backtrace.h internal.h elf.lo: config.h backtrace.h internal.h @@ -2335,6 +2473,7 @@ fileline.lo: config.h backtrace.h internal.h macho.lo: config.h backtrace.h internal.h mmap.lo: config.h backtrace.h internal.h mmapio.lo: config.h backtrace.h internal.h +mtest.lo: backtrace.h backtrace-supported.h nounwind.lo: config.h internal.h pecoff.lo: config.h backtrace.h internal.h posix.lo: config.h backtrace.h internal.h @@ -2346,6 +2485,8 @@ stest.lo: config.h backtrace.h internal.h state.lo: config.h backtrace.h backtrace-supported.h internal.h unknown.lo: config.h backtrace.h internal.h xcoff.lo: config.h backtrace.h internal.h +xztest.lo: config.h backtrace.h backtrace-supported.h internal.h testlib.h +ztest.lo: config.h backtrace.h backtrace-supported.h internal.h testlib.h # GNU Make needs to see an explicit $(MAKE) variable in the command it # runs to enable its job server during parallel builds. Hence the diff --git a/libbacktrace/config.h.in b/libbacktrace/config.h.in index 2303880b9b8..cdb416e6406 100644 --- a/libbacktrace/config.h.in +++ b/libbacktrace/config.h.in @@ -46,6 +46,9 @@ <sys/sysctl.h>. */ #undef HAVE_KERN_PROC_ARGS +/* Define if -llzma is available. */ +#undef HAVE_LIBLZMA + /* Define to 1 if you have the <link.h> header file. */ #undef HAVE_LINK_H diff --git a/libbacktrace/configure b/libbacktrace/configure index d4b3523e10e..031a15602c6 100755 --- a/libbacktrace/configure +++ b/libbacktrace/configure @@ -635,6 +635,16 @@ LTLIBOBJS LIBOBJS NATIVE_FALSE NATIVE_TRUE +HAVE_LIBLZMA_FALSE +HAVE_LIBLZMA_TRUE +HAVE_MINIDEBUG_FALSE +HAVE_MINIDEBUG_TRUE +HAVE_COMM_FALSE +HAVE_COMM_TRUE +COMM +HAVE_XZ_FALSE +HAVE_XZ_TRUE +XZ HAVE_DSYMUTIL_FALSE HAVE_DSYMUTIL_TRUE HAVE_OBJCOPY_DEBUGLINK_FALSE @@ -804,7 +814,8 @@ LIBS CPPFLAGS CPP OBJCOPY -DSYMUTIL' +DSYMUTIL +NM' # Initialize some variables set by options. @@ -1460,6 +1471,7 @@ Some influential environment variables: CPP C preprocessor OBJCOPY location of objcopy DSYMUTIL location of dsymutil + NM location of nm Use these variables to override the choices made by `configure' or to help it to find libraries and programs with nonstandard names/locations. @@ -11505,7 +11517,7 @@ else lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2 lt_status=$lt_dlunknown cat > conftest.$ac_ext <<_LT_EOF -#line 11508 "configure" +#line 11520 "configure" #include "confdefs.h" #if HAVE_DLFCN_H @@ -11611,7 +11623,7 @@ else lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2 lt_status=$lt_dlunknown cat > conftest.$ac_ext <<_LT_EOF -#line 11614 "configure" +#line 11626 "configure" #include "confdefs.h" #if HAVE_DLFCN_H @@ -13857,6 +13869,196 @@ else fi + +# Extract the first word of "nm", so it can be a program name with args. +set dummy nm; ac_word=$2 +{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5 +$as_echo_n "checking for $ac_word... " >&6; } +if ${ac_cv_prog_NM+:} false; then : + $as_echo_n "(cached) " >&6 +else + if test -n "$NM"; then + ac_cv_prog_NM="$NM" # Let the user override the test. +else +as_save_IFS=$IFS; IFS=$PATH_SEPARATOR +for as_dir in $PATH +do + IFS=$as_save_IFS + test -z "$as_dir" && as_dir=. + for ac_exec_ext in '' $ac_executable_extensions; do + if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then + ac_cv_prog_NM="nm" + $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5 + break 2 + fi +done + done +IFS=$as_save_IFS + +fi +fi +NM=$ac_cv_prog_NM +if test -n "$NM"; then + { $as_echo "$as_me:${as_lineno-$LINENO}: result: $NM" >&5 +$as_echo "$NM" >&6; } +else + { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5 +$as_echo "no" >&6; } +fi + + + +# Extract the first word of "xz", so it can be a program name with args. +set dummy xz; ac_word=$2 +{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5 +$as_echo_n "checking for $ac_word... " >&6; } +if ${ac_cv_prog_XZ+:} false; then : + $as_echo_n "(cached) " >&6 +else + if test -n "$XZ"; then + ac_cv_prog_XZ="$XZ" # Let the user override the test. +else +as_save_IFS=$IFS; IFS=$PATH_SEPARATOR +for as_dir in $PATH +do + IFS=$as_save_IFS + test -z "$as_dir" && as_dir=. + for ac_exec_ext in '' $ac_executable_extensions; do + if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then + ac_cv_prog_XZ="xz" + $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5 + break 2 + fi +done + done +IFS=$as_save_IFS + +fi +fi +XZ=$ac_cv_prog_XZ +if test -n "$XZ"; then + { $as_echo "$as_me:${as_lineno-$LINENO}: result: $XZ" >&5 +$as_echo "$XZ" >&6; } +else + { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5 +$as_echo "no" >&6; } +fi + + + if test "$XZ" != ""; then + HAVE_XZ_TRUE= + HAVE_XZ_FALSE='#' +else + HAVE_XZ_TRUE='#' + HAVE_XZ_FALSE= +fi + +# Extract the first word of "comm", so it can be a program name with args. +set dummy comm; ac_word=$2 +{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5 +$as_echo_n "checking for $ac_word... " >&6; } +if ${ac_cv_prog_COMM+:} false; then : + $as_echo_n "(cached) " >&6 +else + if test -n "$COMM"; then + ac_cv_prog_COMM="$COMM" # Let the user override the test. +else +as_save_IFS=$IFS; IFS=$PATH_SEPARATOR +for as_dir in $PATH +do + IFS=$as_save_IFS + test -z "$as_dir" && as_dir=. + for ac_exec_ext in '' $ac_executable_extensions; do + if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then + ac_cv_prog_COMM="comm" + $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5 + break 2 + fi +done + done +IFS=$as_save_IFS + +fi +fi +COMM=$ac_cv_prog_COMM +if test -n "$COMM"; then + { $as_echo "$as_me:${as_lineno-$LINENO}: result: $COMM" >&5 +$as_echo "$COMM" >&6; } +else + { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5 +$as_echo "no" >&6; } +fi + + + if test "$COMM" != ""; then + HAVE_COMM_TRUE= + HAVE_COMM_FALSE='#' +else + HAVE_COMM_TRUE='#' + HAVE_COMM_FALSE= +fi + + + if test "${with_target_subdir}" = "" -a "$FORMAT_FILE" = "elf.lo" -a "${OBJCOPY}" != "" -a "${NM}" != "" -a "${XZ}" != "" -a "${COMM}" != ""; then + HAVE_MINIDEBUG_TRUE= + HAVE_MINIDEBUG_FALSE='#' +else + HAVE_MINIDEBUG_TRUE='#' + HAVE_MINIDEBUG_FALSE= +fi + + +{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for lzma_auto_decoder in -llzma" >&5 +$as_echo_n "checking for lzma_auto_decoder in -llzma... " >&6; } +if ${ac_cv_lib_lzma_lzma_auto_decoder+:} false; then : + $as_echo_n "(cached) " >&6 +else + ac_check_lib_save_LIBS=$LIBS +LIBS="-llzma $LIBS" +cat confdefs.h - <<_ACEOF >conftest.$ac_ext +/* end confdefs.h. */ + +/* Override any GCC internal prototype to avoid an error. + Use char because int might match the return type of a GCC + builtin and then its argument prototype would still apply. */ +#ifdef __cplusplus +extern "C" +#endif +char lzma_auto_decoder (); +int +main () +{ +return lzma_auto_decoder (); + ; + return 0; +} +_ACEOF +if ac_fn_c_try_link "$LINENO"; then : + ac_cv_lib_lzma_lzma_auto_decoder=yes +else + ac_cv_lib_lzma_lzma_auto_decoder=no +fi +rm -f core conftest.err conftest.$ac_objext \ + conftest$ac_exeext conftest.$ac_ext +LIBS=$ac_check_lib_save_LIBS +fi +{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_lzma_lzma_auto_decoder" >&5 +$as_echo "$ac_cv_lib_lzma_lzma_auto_decoder" >&6; } +if test "x$ac_cv_lib_lzma_lzma_auto_decoder" = xyes; then : + +$as_echo "#define HAVE_LIBLZMA 1" >>confdefs.h + +fi + + if test "$ac_cv_lib_lzma_lzma_auto_decoder" = yes; then + HAVE_LIBLZMA_TRUE= + HAVE_LIBLZMA_FALSE='#' +else + HAVE_LIBLZMA_TRUE='#' + HAVE_LIBLZMA_FALSE= +fi + + { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether tests can run" >&5 $as_echo_n "checking whether tests can run... " >&6; } if ${libbacktrace_cv_sys_native+:} false; then : @@ -14073,6 +14275,22 @@ if test -z "${HAVE_DSYMUTIL_TRUE}" && test -z "${HAVE_DSYMUTIL_FALSE}"; then as_fn_error $? "conditional \"HAVE_DSYMUTIL\" was never defined. Usually this means the macro was only invoked conditionally." "$LINENO" 5 fi +if test -z "${HAVE_XZ_TRUE}" && test -z "${HAVE_XZ_FALSE}"; then + as_fn_error $? "conditional \"HAVE_XZ\" was never defined. +Usually this means the macro was only invoked conditionally." "$LINENO" 5 +fi +if test -z "${HAVE_COMM_TRUE}" && test -z "${HAVE_COMM_FALSE}"; then + as_fn_error $? "conditional \"HAVE_COMM\" was never defined. +Usually this means the macro was only invoked conditionally." "$LINENO" 5 +fi +if test -z "${HAVE_MINIDEBUG_TRUE}" && test -z "${HAVE_MINIDEBUG_FALSE}"; then + as_fn_error $? "conditional \"HAVE_MINIDEBUG\" was never defined. +Usually this means the macro was only invoked conditionally." "$LINENO" 5 +fi +if test -z "${HAVE_LIBLZMA_TRUE}" && test -z "${HAVE_LIBLZMA_FALSE}"; then + as_fn_error $? "conditional \"HAVE_LIBLZMA\" was never defined. +Usually this means the macro was only invoked conditionally." "$LINENO" 5 +fi if test -z "${NATIVE_TRUE}" && test -z "${NATIVE_FALSE}"; then as_fn_error $? "conditional \"NATIVE\" was never defined. Usually this means the macro was only invoked conditionally." "$LINENO" 5 diff --git a/libbacktrace/configure.ac b/libbacktrace/configure.ac index c4b19c4066f..0659ea60484 100644 --- a/libbacktrace/configure.ac +++ b/libbacktrace/configure.ac @@ -512,6 +512,21 @@ AC_ARG_VAR(DSYMUTIL, [location of dsymutil]) AC_CHECK_PROG(DSYMUTIL, dsymutil, dsymutil) AM_CONDITIONAL(HAVE_DSYMUTIL, test -n "${DSYMUTIL}") +AC_ARG_VAR(NM, [location of nm]) +AC_CHECK_PROG(NM, nm, nm) + +AC_CHECK_PROG(XZ, xz, xz) +AM_CONDITIONAL(HAVE_XZ, test "$XZ" != "") +AC_CHECK_PROG(COMM, comm, comm) +AM_CONDITIONAL(HAVE_COMM, test "$COMM" != "") + +AM_CONDITIONAL(HAVE_MINIDEBUG, + test "${with_target_subdir}" = "" -a "$FORMAT_FILE" = "elf.lo" -a "${OBJCOPY}" != "" -a "${NM}" != "" -a "${XZ}" != "" -a "${COMM}" != "") + +AC_CHECK_LIB([lzma], [lzma_auto_decoder], + [AC_DEFINE(HAVE_LIBLZMA, 1, [Define if -llzma is available.])]) +AM_CONDITIONAL(HAVE_LIBLZMA, test "$ac_cv_lib_lzma_lzma_auto_decoder" = yes) + AC_CACHE_CHECK([whether tests can run], [libbacktrace_cv_sys_native], [AC_RUN_IFELSE([AC_LANG_PROGRAM([], [return 0;])], diff --git a/libbacktrace/elf.c b/libbacktrace/elf.c index 80a00506bd6..dd004708246 100644 --- a/libbacktrace/elf.c +++ b/libbacktrace/elf.c @@ -390,6 +390,14 @@ struct elf_syminfo_data size_t count; }; +/* A view that works for either a file or memory. */ + +struct elf_view +{ + struct backtrace_view view; + int release; /* If non-zero, must call backtrace_release_view. */ +}; + /* Information about PowerPC64 ELFv1 .opd section. */ struct elf_ppc64_opd_data @@ -401,9 +409,48 @@ struct elf_ppc64_opd_data /* Size of the .opd section. */ size_t size; /* Corresponding section view. */ - struct backtrace_view view; + struct elf_view view; }; +/* Create a view of SIZE bytes from DESCRIPTOR/MEMORY at OFFSET. */ + +static int +elf_get_view (struct backtrace_state *state, int descriptor, + const unsigned char *memory, size_t memory_size, off_t offset, + uint64_t size, backtrace_error_callback error_callback, + void *data, struct elf_view *view) +{ + if (memory == NULL) + { + view->release = 1; + return backtrace_get_view (state, descriptor, offset, size, + error_callback, data, &view->view); + } + else + { + if ((uint64_t) offset + size > (uint64_t) memory_size) + { + error_callback (data, "out of range for in-memory file", 0); + return 0; + } + view->view.data = (const void *) (memory + offset); + view->view.base = NULL; + view->view.len = size; + view->release = 0; + return 1; + } +} + +/* Release a view read by elf_get_view. */ + +static void +elf_release_view (struct backtrace_state *state, struct elf_view *view, + backtrace_error_callback error_callback, void *data) +{ + if (view->release) + backtrace_release_view (state, &view->view, error_callback, data); +} + /* Compute the CRC-32 of BUF/LEN. This uses the CRC used for .gnu_debuglink files. */ @@ -1035,7 +1082,7 @@ elf_open_debugfile_by_debuglink (struct backtrace_state *state, when this code is compiled with -g. */ static void -elf_zlib_failed(void) +elf_uncompress_failed(void) { } @@ -1062,7 +1109,7 @@ elf_zlib_fetch (const unsigned char **ppin, const unsigned char *pinend, if (unlikely (pinend - pin < 4)) { - elf_zlib_failed (); + elf_uncompress_failed (); return 0; } @@ -1192,7 +1239,7 @@ elf_zlib_inflate_table (unsigned char *codes, size_t codes_len, { if (unlikely (codes[i] >= 16)) { - elf_zlib_failed (); + elf_uncompress_failed (); return 0; } @@ -1229,7 +1276,7 @@ elf_zlib_inflate_table (unsigned char *codes, size_t codes_len, if (unlikely (jcnt > (1U << j))) { - elf_zlib_failed (); + elf_uncompress_failed (); return 0; } @@ -1249,7 +1296,7 @@ elf_zlib_inflate_table (unsigned char *codes, size_t codes_len, if (unlikely ((val & ~HUFFMAN_VALUE_MASK) != 0)) { - elf_zlib_failed (); + elf_uncompress_failed (); return 0; } @@ -1265,7 +1312,7 @@ elf_zlib_inflate_table (unsigned char *codes, size_t codes_len, { if (unlikely (table[ind] != 0)) { - elf_zlib_failed (); + elf_uncompress_failed (); return 0; } table[ind] = tval; @@ -1353,7 +1400,7 @@ elf_zlib_inflate_table (unsigned char *codes, size_t codes_len, } if (unlikely (jcnt != 0)) { - elf_zlib_failed (); + elf_uncompress_failed (); return 0; } } @@ -1406,7 +1453,7 @@ elf_zlib_inflate_table (unsigned char *codes, size_t codes_len, if (unlikely ((next_secondary & HUFFMAN_VALUE_MASK) != next_secondary)) { - elf_zlib_failed (); + elf_uncompress_failed (); return 0; } @@ -1424,7 +1471,7 @@ elf_zlib_inflate_table (unsigned char *codes, size_t codes_len, if (unlikely ((tprimary & (1U << HUFFMAN_SECONDARY_SHIFT)) == 0)) { - elf_zlib_failed (); + elf_uncompress_failed (); return 0; } secondary = tprimary & HUFFMAN_VALUE_MASK; @@ -1432,7 +1479,7 @@ elf_zlib_inflate_table (unsigned char *codes, size_t codes_len, & HUFFMAN_BITS_MASK); if (unlikely (secondary_bits < j - 8)) { - elf_zlib_failed (); + elf_uncompress_failed (); return 0; } } @@ -1448,7 +1495,7 @@ elf_zlib_inflate_table (unsigned char *codes, size_t codes_len, { if (unlikely (table[secondary + 0x100 + ind] != 0)) { - elf_zlib_failed (); + elf_uncompress_failed (); return 0; } table[secondary + 0x100 + ind] = tval; @@ -1664,28 +1711,28 @@ elf_zlib_inflate (const unsigned char *pin, size_t sin, uint16_t *zdebug_table, if (unlikely ((pin[0] & 0xf) != 8)) /* 8 is zlib encoding. */ { /* Unknown compression method. */ - elf_zlib_failed (); + elf_uncompress_failed (); return 0; } if (unlikely ((pin[0] >> 4) > 7)) { /* Window size too large. Other than this check, we don't care about the window size. */ - elf_zlib_failed (); + elf_uncompress_failed (); return 0; } if (unlikely ((pin[1] & 0x20) != 0)) { /* Stream expects a predefined dictionary, but we have no dictionary. */ - elf_zlib_failed (); + elf_uncompress_failed (); return 0; } val = (pin[0] << 8) | pin[1]; if (unlikely (val % 31 != 0)) { /* Header check failure. */ - elf_zlib_failed (); + elf_uncompress_failed (); return 0; } pin += 2; @@ -1722,7 +1769,7 @@ elf_zlib_inflate (const unsigned char *pin, size_t sin, uint16_t *zdebug_table, if (unlikely (type == 3)) { /* Invalid block type. */ - elf_zlib_failed (); + elf_uncompress_failed (); return 0; } @@ -1745,7 +1792,7 @@ elf_zlib_inflate (const unsigned char *pin, size_t sin, uint16_t *zdebug_table, if (unlikely ((pinend - pin) < 4)) { /* Missing length. */ - elf_zlib_failed (); + elf_uncompress_failed (); return 0; } len = pin[0] | (pin[1] << 8); @@ -1755,14 +1802,14 @@ elf_zlib_inflate (const unsigned char *pin, size_t sin, uint16_t *zdebug_table, if (unlikely (len != lenc)) { /* Corrupt data. */ - elf_zlib_failed (); + elf_uncompress_failed (); return 0; } if (unlikely (len > (unsigned int) (pinend - pin) || len > (unsigned int) (poutend - pout))) { /* Not enough space in buffers. */ - elf_zlib_failed (); + elf_uncompress_failed (); return 0; } memcpy (pout, pin, len); @@ -1812,7 +1859,7 @@ elf_zlib_inflate (const unsigned char *pin, size_t sin, uint16_t *zdebug_table, if (unlikely (nlit > 286 || ndist > 30)) { /* Values out of range. */ - elf_zlib_failed (); + elf_uncompress_failed (); return 0; } @@ -1977,7 +2024,7 @@ elf_zlib_inflate (const unsigned char *pin, size_t sin, uint16_t *zdebug_table, a secondary table is never necessary. */ if (unlikely ((t & (1U << HUFFMAN_SECONDARY_SHIFT)) != 0)) { - elf_zlib_failed (); + elf_uncompress_failed (); return 0; } @@ -1997,7 +2044,7 @@ elf_zlib_inflate (const unsigned char *pin, size_t sin, uint16_t *zdebug_table, if (unlikely (plen == plenbase)) { - elf_zlib_failed (); + elf_uncompress_failed (); return 0; } @@ -2010,7 +2057,7 @@ elf_zlib_inflate (const unsigned char *pin, size_t sin, uint16_t *zdebug_table, bits -= 2; if (unlikely ((unsigned int) (plenend - plen) < c)) { - elf_zlib_failed (); + elf_uncompress_failed (); return 0; } @@ -2045,7 +2092,7 @@ elf_zlib_inflate (const unsigned char *pin, size_t sin, uint16_t *zdebug_table, bits -= 3; if (unlikely ((unsigned int) (plenend - plen) < c)) { - elf_zlib_failed (); + elf_uncompress_failed (); return 0; } @@ -2091,7 +2138,7 @@ elf_zlib_inflate (const unsigned char *pin, size_t sin, uint16_t *zdebug_table, bits -= 7; if (unlikely ((unsigned int) (plenend - plen) < c)) { - elf_zlib_failed (); + elf_uncompress_failed (); return 0; } @@ -2100,7 +2147,7 @@ elf_zlib_inflate (const unsigned char *pin, size_t sin, uint16_t *zdebug_table, } else { - elf_zlib_failed (); + elf_uncompress_failed (); return 0; } } @@ -2110,7 +2157,7 @@ elf_zlib_inflate (const unsigned char *pin, size_t sin, uint16_t *zdebug_table, plen = plenbase; if (unlikely (plen[256] == 0)) { - elf_zlib_failed (); + elf_uncompress_failed (); return 0; } @@ -2162,7 +2209,7 @@ elf_zlib_inflate (const unsigned char *pin, size_t sin, uint16_t *zdebug_table, { if (unlikely (pout == poutend)) { - elf_zlib_failed (); + elf_uncompress_failed (); return 0; } @@ -2191,7 +2238,7 @@ elf_zlib_inflate (const unsigned char *pin, size_t sin, uint16_t *zdebug_table, len = 258; else if (unlikely (lit > 285)) { - elf_zlib_failed (); + elf_uncompress_failed (); return 0; } else @@ -2244,13 +2291,13 @@ elf_zlib_inflate (const unsigned char *pin, size_t sin, uint16_t *zdebug_table, if (unlikely (pout == porigout)) { - elf_zlib_failed (); + elf_uncompress_failed (); return 0; } if (unlikely ((unsigned int) (poutend - pout) < len)) { - elf_zlib_failed (); + elf_uncompress_failed (); return 0; } @@ -2259,7 +2306,7 @@ elf_zlib_inflate (const unsigned char *pin, size_t sin, uint16_t *zdebug_table, } else if (unlikely (dist > 29)) { - elf_zlib_failed (); + elf_uncompress_failed (); return 0; } else @@ -2290,13 +2337,13 @@ elf_zlib_inflate (const unsigned char *pin, size_t sin, uint16_t *zdebug_table, if (unlikely ((unsigned int) (pout - porigout) < dist)) { - elf_zlib_failed (); + elf_uncompress_failed (); return 0; } if (unlikely ((unsigned int) (poutend - pout) < len)) { - elf_zlib_failed (); + elf_uncompress_failed (); return 0; } @@ -2326,7 +2373,7 @@ elf_zlib_inflate (const unsigned char *pin, size_t sin, uint16_t *zdebug_table, /* We should have filled the output buffer. */ if (unlikely (pout != poutend)) { - elf_zlib_failed (); + elf_uncompress_failed (); return 0; } @@ -2453,7 +2500,7 @@ elf_zlib_verify_checksum (const unsigned char *checkbytes, if (unlikely ((s2 << 16) + s1 != cksum)) { - elf_zlib_failed (); + elf_uncompress_failed (); return 0; } @@ -2608,6 +2655,1311 @@ backtrace_uncompress_zdebug (struct backtrace_state *state, return ret; } +/* Number of LZMA states. */ +#define LZMA_STATES (12) + +/* Number of LZMA position states. The pb value of the property byte + is the number of bits to include in these states, and the maximum + value of pb is 4. */ +#define LZMA_POS_STATES (16) + +/* Number of LZMA distance states. These are used match distances + with a short match length: up to 4 bytes. */ +#define LZMA_DIST_STATES (4) + +/* Number of LZMA distance slots. LZMA uses six bits to encode larger + match lengths, so 1 << 6 possible probabilities. */ +#define LZMA_DIST_SLOTS (64) + +/* LZMA distances 0 to 3 are encoded directly, larger values use a + probability model. */ +#define LZMA_DIST_MODEL_START (4) + +/* The LZMA probability model ends at 14. */ +#define LZMA_DIST_MODEL_END (14) + +/* LZMA distance slots for distances less than 127. */ +#define LZMA_FULL_DISTANCES (128) + +/* LZMA uses four alignment bits. */ +#define LZMA_ALIGN_SIZE (16) + +/* LZMA match length is encoded with 4, 5, or 10 bits, some of which + are already known. */ +#define LZMA_LEN_LOW_SYMBOLS (8) +#define LZMA_LEN_MID_SYMBOLS (8) +#define LZMA_LEN_HIGH_SYMBOLS (256) + +/* LZMA literal encoding. */ +#define LZMA_LITERAL_CODERS_MAX (16) +#define LZMA_LITERAL_CODER_SIZE (0x300) + +/* LZMA is based on a large set of probabilities, each managed + independently. Each probability is an 11 bit number that we store + in a uint16_t. We use a single large array of probabilities. */ + +/* Lengths of entries in the LZMA probabilities array. The names used + here are copied from the Linux kernel implementation. */ + +#define LZMA_PROB_IS_MATCH_LEN (LZMA_STATES * LZMA_POS_STATES) +#define LZMA_PROB_IS_REP_LEN LZMA_STATES +#define LZMA_PROB_IS_REP0_LEN LZMA_STATES +#define LZMA_PROB_IS_REP1_LEN LZMA_STATES +#define LZMA_PROB_IS_REP2_LEN LZMA_STATES +#define LZMA_PROB_IS_REP0_LONG_LEN (LZMA_STATES * LZMA_POS_STATES) +#define LZMA_PROB_DIST_SLOT_LEN (LZMA_DIST_STATES * LZMA_DIST_SLOTS) +#define LZMA_PROB_DIST_SPECIAL_LEN (LZMA_FULL_DISTANCES - LZMA_DIST_MODEL_END) +#define LZMA_PROB_DIST_ALIGN_LEN LZMA_ALIGN_SIZE +#define LZMA_PROB_MATCH_LEN_CHOICE_LEN 1 +#define LZMA_PROB_MATCH_LEN_CHOICE2_LEN 1 +#define LZMA_PROB_MATCH_LEN_LOW_LEN (LZMA_POS_STATES * LZMA_LEN_LOW_SYMBOLS) +#define LZMA_PROB_MATCH_LEN_MID_LEN (LZMA_POS_STATES * LZMA_LEN_MID_SYMBOLS) +#define LZMA_PROB_MATCH_LEN_HIGH_LEN LZMA_LEN_HIGH_SYMBOLS +#define LZMA_PROB_REP_LEN_CHOICE_LEN 1 +#define LZMA_PROB_REP_LEN_CHOICE2_LEN 1 +#define LZMA_PROB_REP_LEN_LOW_LEN (LZMA_POS_STATES * LZMA_LEN_LOW_SYMBOLS) +#define LZMA_PROB_REP_LEN_MID_LEN (LZMA_POS_STATES * LZMA_LEN_MID_SYMBOLS) +#define LZMA_PROB_REP_LEN_HIGH_LEN LZMA_LEN_HIGH_SYMBOLS +#define LZMA_PROB_LITERAL_LEN \ + (LZMA_LITERAL_CODERS_MAX * LZMA_LITERAL_CODER_SIZE) + +/* Offsets into the LZMA probabilities array. This is mechanically + generated from the above lengths. */ + +#define LZMA_PROB_IS_MATCH_OFFSET 0 +#define LZMA_PROB_IS_REP_OFFSET \ + (LZMA_PROB_IS_MATCH_OFFSET + LZMA_PROB_IS_MATCH_LEN) +#define LZMA_PROB_IS_REP0_OFFSET \ + (LZMA_PROB_IS_REP_OFFSET + LZMA_PROB_IS_REP_LEN) +#define LZMA_PROB_IS_REP1_OFFSET \ + (LZMA_PROB_IS_REP0_OFFSET + LZMA_PROB_IS_REP0_LEN) +#define LZMA_PROB_IS_REP2_OFFSET \ + (LZMA_PROB_IS_REP1_OFFSET + LZMA_PROB_IS_REP1_LEN) +#define LZMA_PROB_IS_REP0_LONG_OFFSET \ + (LZMA_PROB_IS_REP2_OFFSET + LZMA_PROB_IS_REP2_LEN) +#define LZMA_PROB_DIST_SLOT_OFFSET \ + (LZMA_PROB_IS_REP0_LONG_OFFSET + LZMA_PROB_IS_REP0_LONG_LEN) +#define LZMA_PROB_DIST_SPECIAL_OFFSET \ + (LZMA_PROB_DIST_SLOT_OFFSET + LZMA_PROB_DIST_SLOT_LEN) +#define LZMA_PROB_DIST_ALIGN_OFFSET \ + (LZMA_PROB_DIST_SPECIAL_OFFSET + LZMA_PROB_DIST_SPECIAL_LEN) +#define LZMA_PROB_MATCH_LEN_CHOICE_OFFSET \ + (LZMA_PROB_DIST_ALIGN_OFFSET + LZMA_PROB_DIST_ALIGN_LEN) +#define LZMA_PROB_MATCH_LEN_CHOICE2_OFFSET \ + (LZMA_PROB_MATCH_LEN_CHOICE_OFFSET + LZMA_PROB_MATCH_LEN_CHOICE_LEN) +#define LZMA_PROB_MATCH_LEN_LOW_OFFSET \ + (LZMA_PROB_MATCH_LEN_CHOICE2_OFFSET + LZMA_PROB_MATCH_LEN_CHOICE2_LEN) +#define LZMA_PROB_MATCH_LEN_MID_OFFSET \ + (LZMA_PROB_MATCH_LEN_LOW_OFFSET + LZMA_PROB_MATCH_LEN_LOW_LEN) +#define LZMA_PROB_MATCH_LEN_HIGH_OFFSET \ + (LZMA_PROB_MATCH_LEN_MID_OFFSET + LZMA_PROB_MATCH_LEN_MID_LEN) +#define LZMA_PROB_REP_LEN_CHOICE_OFFSET \ + (LZMA_PROB_MATCH_LEN_HIGH_OFFSET + LZMA_PROB_MATCH_LEN_HIGH_LEN) +#define LZMA_PROB_REP_LEN_CHOICE2_OFFSET \ + (LZMA_PROB_REP_LEN_CHOICE_OFFSET + LZMA_PROB_REP_LEN_CHOICE_LEN) +#define LZMA_PROB_REP_LEN_LOW_OFFSET \ + (LZMA_PROB_REP_LEN_CHOICE2_OFFSET + LZMA_PROB_REP_LEN_CHOICE2_LEN) +#define LZMA_PROB_REP_LEN_MID_OFFSET \ + (LZMA_PROB_REP_LEN_LOW_OFFSET + LZMA_PROB_REP_LEN_LOW_LEN) +#define LZMA_PROB_REP_LEN_HIGH_OFFSET \ + (LZMA_PROB_REP_LEN_MID_OFFSET + LZMA_PROB_REP_LEN_MID_LEN) +#define LZMA_PROB_LITERAL_OFFSET \ + (LZMA_PROB_REP_LEN_HIGH_OFFSET + LZMA_PROB_REP_LEN_HIGH_LEN) + +#define LZMA_PROB_TOTAL_COUNT \ + (LZMA_PROB_LITERAL_OFFSET + LZMA_PROB_LITERAL_LEN) + +/* Check that the number of LZMA probabilities is the same as the + Linux kernel implementation. */ + +#if LZMA_PROB_TOTAL_COUNT != 1846 + (1 << 4) * 0x300 + #error Wrong number of LZMA probabilities +#endif + +/* Expressions for the offset in the LZMA probabilities array of a + specific probability. */ + +#define LZMA_IS_MATCH(state, pos) \ + (LZMA_PROB_IS_MATCH_OFFSET + (state) * LZMA_POS_STATES + (pos)) +#define LZMA_IS_REP(state) \ + (LZMA_PROB_IS_REP_OFFSET + (state)) +#define LZMA_IS_REP0(state) \ + (LZMA_PROB_IS_REP0_OFFSET + (state)) +#define LZMA_IS_REP1(state) \ + (LZMA_PROB_IS_REP1_OFFSET + (state)) +#define LZMA_IS_REP2(state) \ + (LZMA_PROB_IS_REP2_OFFSET + (state)) +#define LZMA_IS_REP0_LONG(state, pos) \ + (LZMA_PROB_IS_REP0_LONG_OFFSET + (state) * LZMA_POS_STATES + (pos)) +#define LZMA_DIST_SLOT(dist, slot) \ + (LZMA_PROB_DIST_SLOT_OFFSET + (dist) * LZMA_DIST_SLOTS + (slot)) +#define LZMA_DIST_SPECIAL(dist) \ + (LZMA_PROB_DIST_SPECIAL_OFFSET + (dist)) +#define LZMA_DIST_ALIGN(dist) \ + (LZMA_PROB_DIST_ALIGN_OFFSET + (dist)) +#define LZMA_MATCH_LEN_CHOICE \ + LZMA_PROB_MATCH_LEN_CHOICE_OFFSET +#define LZMA_MATCH_LEN_CHOICE2 \ + LZMA_PROB_MATCH_LEN_CHOICE2_OFFSET +#define LZMA_MATCH_LEN_LOW(pos, sym) \ + (LZMA_PROB_MATCH_LEN_LOW_OFFSET + (pos) * LZMA_LEN_LOW_SYMBOLS + (sym)) +#define LZMA_MATCH_LEN_MID(pos, sym) \ + (LZMA_PROB_MATCH_LEN_MID_OFFSET + (pos) * LZMA_LEN_MID_SYMBOLS + (sym)) +#define LZMA_MATCH_LEN_HIGH(sym) \ + (LZMA_PROB_MATCH_LEN_HIGH_OFFSET + (sym)) +#define LZMA_REP_LEN_CHOICE \ + LZMA_PROB_REP_LEN_CHOICE_OFFSET +#define LZMA_REP_LEN_CHOICE2 \ + LZMA_PROB_REP_LEN_CHOICE2_OFFSET +#define LZMA_REP_LEN_LOW(pos, sym) \ + (LZMA_PROB_REP_LEN_LOW_OFFSET + (pos) * LZMA_LEN_LOW_SYMBOLS + (sym)) +#define LZMA_REP_LEN_MID(pos, sym) \ + (LZMA_PROB_REP_LEN_MID_OFFSET + (pos) * LZMA_LEN_MID_SYMBOLS + (sym)) +#define LZMA_REP_LEN_HIGH(sym) \ + (LZMA_PROB_REP_LEN_HIGH_OFFSET + (sym)) +#define LZMA_LITERAL(code, size) \ + (LZMA_PROB_LITERAL_OFFSET + (code) * LZMA_LITERAL_CODER_SIZE + (size)) + +/* Read an LZMA varint from BUF, reading and updating *POFFSET, + setting *VAL. Returns 0 on error, 1 on success. */ + +static int +elf_lzma_varint (const unsigned char *compressed, size_t compressed_size, + size_t *poffset, uint64_t *val) +{ + size_t off; + int i; + uint64_t v; + unsigned char b; + + off = *poffset; + i = 0; + v = 0; + while (1) + { + if (unlikely (off >= compressed_size)) + { + elf_uncompress_failed (); + return 0; + } + b = compressed[off]; + v |= (b & 0x7f) << (i * 7); + ++off; + if ((b & 0x80) == 0) + { + *poffset = off; + *val = v; + return 1; + } + ++i; + if (unlikely (i >= 9)) + { + elf_uncompress_failed (); + return 0; + } + } +} + +/* Normalize the LZMA range decoder, pulling in an extra input byte if + needed. */ + +static void +elf_lzma_range_normalize (const unsigned char *compressed, + size_t compressed_size, size_t *poffset, + uint32_t *prange, uint32_t *pcode) +{ + if (*prange < (1U << 24)) + { + if (unlikely (*poffset >= compressed_size)) + { + /* We assume this will be caught elsewhere. */ + elf_uncompress_failed (); + return; + } + *prange <<= 8; + *pcode <<= 8; + *pcode += compressed[*poffset]; + ++*poffset; + } +} + +/* Read and return a single bit from the LZMA stream, reading and + updating *PROB. Each bit comes from the range coder. */ + +static int +elf_lzma_bit (const unsigned char *compressed, size_t compressed_size, + uint16_t *prob, size_t *poffset, uint32_t *prange, + uint32_t *pcode) +{ + uint32_t bound; + + elf_lzma_range_normalize (compressed, compressed_size, poffset, + prange, pcode); + bound = (*prange >> 11) * (uint32_t) *prob; + if (*pcode < bound) + { + *prange = bound; + *prob += ((1U << 11) - *prob) >> 5; + return 0; + } + else + { + *prange -= bound; + *pcode -= bound; + *prob -= *prob >> 5; + return 1; + } +} + +/* Read an integer of size BITS from the LZMA stream, most significant + bit first. The bits are predicted using PROBS. */ + +static uint32_t +elf_lzma_integer (const unsigned char *compressed, size_t compressed_size, + uint16_t *probs, uint32_t bits, size_t *poffset, + uint32_t *prange, uint32_t *pcode) +{ + uint32_t sym; + uint32_t i; + + sym = 1; + for (i = 0; i < bits; i++) + { + int bit; + + bit = elf_lzma_bit (compressed, compressed_size, probs + sym, poffset, + prange, pcode); + sym <<= 1; + sym += bit; + } + return sym - (1 << bits); +} + +/* Read an integer of size BITS from the LZMA stream, least + significant bit first. The bits are predicted using PROBS. */ + +static uint32_t +elf_lzma_reverse_integer (const unsigned char *compressed, + size_t compressed_size, uint16_t *probs, + uint32_t bits, size_t *poffset, uint32_t *prange, + uint32_t *pcode) +{ + uint32_t sym; + uint32_t val; + uint32_t i; + + sym = 1; + val = 0; + for (i = 0; i < bits; i++) + { + int bit; + + bit = elf_lzma_bit (compressed, compressed_size, probs + sym, poffset, + prange, pcode); + sym <<= 1; + sym += bit; + val += bit << i; + } + return val; +} + +/* Read a length from the LZMA stream. IS_REP picks either LZMA_MATCH + or LZMA_REP probabilities. */ + +static uint32_t +elf_lzma_len (const unsigned char *compressed, size_t compressed_size, + uint16_t *probs, int is_rep, unsigned int pos_state, + size_t *poffset, uint32_t *prange, uint32_t *pcode) +{ + uint16_t *probs_choice; + uint16_t *probs_sym; + uint32_t bits; + uint32_t len; + + probs_choice = probs + (is_rep + ? LZMA_REP_LEN_CHOICE + : LZMA_MATCH_LEN_CHOICE); + if (elf_lzma_bit (compressed, compressed_size, probs_choice, poffset, + prange, pcode)) + { + probs_choice = probs + (is_rep + ? LZMA_REP_LEN_CHOICE2 + : LZMA_MATCH_LEN_CHOICE2); + if (elf_lzma_bit (compressed, compressed_size, probs_choice, + poffset, prange, pcode)) + { + probs_sym = probs + (is_rep + ? LZMA_REP_LEN_HIGH (0) + : LZMA_MATCH_LEN_HIGH (0)); + bits = 8; + len = 2 + 8 + 8; + } + else + { + probs_sym = probs + (is_rep + ? LZMA_REP_LEN_MID (pos_state, 0) + : LZMA_MATCH_LEN_MID (pos_state, 0)); + bits = 3; + len = 2 + 8; + } + } + else + { + probs_sym = probs + (is_rep + ? LZMA_REP_LEN_LOW (pos_state, 0) + : LZMA_MATCH_LEN_LOW (pos_state, 0)); + bits = 3; + len = 2; + } + + len += elf_lzma_integer (compressed, compressed_size, probs_sym, bits, + poffset, prange, pcode); + return len; +} + +/* Uncompress one LZMA block from a minidebug file. The compressed + data is at COMPRESSED + *POFFSET. Update *POFFSET. Store the data + into the memory at UNCOMPRESSED, size UNCOMPRESSED_SIZE. CHECK is + the stream flag from the xz header. Return 1 on successful + decompression. */ + +static int +elf_uncompress_lzma_block (const unsigned char *compressed, + size_t compressed_size, unsigned char check, + uint16_t *probs, unsigned char *uncompressed, + size_t uncompressed_size, size_t *poffset) +{ + size_t off; + size_t block_header_offset; + size_t block_header_size; + unsigned char block_flags; + uint64_t header_compressed_size; + uint64_t header_uncompressed_size; + unsigned char lzma2_properties; + uint32_t computed_crc; + uint32_t stream_crc; + size_t uncompressed_offset; + size_t dict_start_offset; + unsigned int lc; + unsigned int lp; + unsigned int pb; + uint32_t range; + uint32_t code; + uint32_t lstate; + uint32_t dist[4]; + + off = *poffset; + block_header_offset = off; + + /* Block header size is a single byte. */ + if (unlikely (off >= compressed_size)) + { + elf_uncompress_failed (); + return 0; + } + block_header_size = (compressed[off] + 1) * 4; + if (unlikely (off + block_header_size > compressed_size)) + { + elf_uncompress_failed (); + return 0; + } + + /* Block flags. */ + block_flags = compressed[off + 1]; + if (unlikely ((block_flags & 0x3c) != 0)) + { + elf_uncompress_failed (); + return 0; + } + + off += 2; + + /* Optional compressed size. */ + header_compressed_size = 0; + if ((block_flags & 0x40) != 0) + { + *poffset = off; + if (!elf_lzma_varint (compressed, compressed_size, poffset, + &header_compressed_size)) + return 0; + off = *poffset; + } + + /* Optional uncompressed size. */ + header_uncompressed_size = 0; + if ((block_flags & 0x80) != 0) + { + *poffset = off; + if (!elf_lzma_varint (compressed, compressed_size, poffset, + &header_uncompressed_size)) + return 0; + off = *poffset; + } + + /* The recipe for creating a minidebug file is to run the xz program + with no arguments, so we expect exactly one filter: lzma2. */ + + if (unlikely ((block_flags & 0x3) != 0)) + { + elf_uncompress_failed (); + return 0; + } + + if (unlikely (off + 2 >= block_header_offset + block_header_size)) + { + elf_uncompress_failed (); + return 0; + } + + /* The filter ID for LZMA2 is 0x21. */ + if (unlikely (compressed[off] != 0x21)) + { + elf_uncompress_failed (); + return 0; + } + ++off; + + /* The size of the filter properties for LZMA2 is 1. */ + if (unlikely (compressed[off] != 1)) + { + elf_uncompress_failed (); + return 0; + } + ++off; + + lzma2_properties = compressed[off]; + ++off; + + if (unlikely (lzma2_properties > 40)) + { + elf_uncompress_failed (); + return 0; + } + + /* The properties describe the dictionary size, but we don't care + what that is. */ + + /* Block header padding. */ + if (unlikely (off + 4 > compressed_size)) + { + elf_uncompress_failed (); + return 0; + } + + off = (off + 3) &~ (size_t) 3; + + if (unlikely (off + 4 > compressed_size)) + { + elf_uncompress_failed (); + return 0; + } + + /* Block header CRC. */ + computed_crc = elf_crc32 (0, compressed + block_header_offset, + block_header_size - 4); + stream_crc = (compressed[off] + | (compressed[off + 1] << 8) + | (compressed[off + 2] << 16) + | (compressed[off + 3] << 24)); + if (unlikely (computed_crc != stream_crc)) + { + elf_uncompress_failed (); + return 0; + } + off += 4; + + /* Read a sequence of LZMA2 packets. */ + + uncompressed_offset = 0; + dict_start_offset = 0; + lc = 0; + lp = 0; + pb = 0; + lstate = 0; + while (off < compressed_size) + { + unsigned char control; + + range = 0xffffffff; + code = 0; + + control = compressed[off]; + ++off; + if (unlikely (control == 0)) + { + /* End of packets. */ + break; + } + + if (control == 1 || control >= 0xe0) + { + /* Reset dictionary to empty. */ + dict_start_offset = uncompressed_offset; + } + + if (control < 0x80) + { + size_t chunk_size; + + /* The only valid values here are 1 or 2. A 1 means to + reset the dictionary (done above). Then we see an + uncompressed chunk. */ + + if (unlikely (control > 2)) + { + elf_uncompress_failed (); + return 0; + } + + /* An uncompressed chunk is a two byte size followed by + data. */ + + if (unlikely (off + 2 > compressed_size)) + { + elf_uncompress_failed (); + return 0; + } + + chunk_size = compressed[off] << 8; + chunk_size += compressed[off + 1]; + ++chunk_size; + + off += 2; + + if (unlikely (off + chunk_size > compressed_size)) + { + elf_uncompress_failed (); + return 0; + } + if (unlikely (uncompressed_offset + chunk_size > uncompressed_size)) + { + elf_uncompress_failed (); + return 0; + } + + memcpy (uncompressed + uncompressed_offset, compressed + off, + chunk_size); + uncompressed_offset += chunk_size; + off += chunk_size; + } + else + { + size_t uncompressed_chunk_start; + size_t uncompressed_chunk_size; + size_t compressed_chunk_size; + size_t limit; + + /* An LZMA chunk. This starts with an uncompressed size and + a compressed size. */ + + if (unlikely (off + 4 >= compressed_size)) + { + elf_uncompress_failed (); + return 0; + } + + uncompressed_chunk_start = uncompressed_offset; + + uncompressed_chunk_size = (control & 0x1f) << 16; + uncompressed_chunk_size += compressed[off] << 8; + uncompressed_chunk_size += compressed[off + 1]; + ++uncompressed_chunk_size; + + compressed_chunk_size = compressed[off + 2] << 8; + compressed_chunk_size += compressed[off + 3]; + ++compressed_chunk_size; + + off += 4; + + /* Bit 7 (0x80) is set. + Bits 6 and 5 (0x40 and 0x20) are as follows: + 0: don't reset anything + 1: reset state + 2: reset state, read properties + 3: reset state, read properties, reset dictionary (done above) */ + + if (control >= 0xc0) + { + unsigned char props; + + /* Bit 6 is set, read properties. */ + + if (unlikely (off >= compressed_size)) + { + elf_uncompress_failed (); + return 0; + } + props = compressed[off]; + ++off; + if (unlikely (props > (4 * 5 + 4) * 9 + 8)) + { + elf_uncompress_failed (); + return 0; + } + pb = 0; + while (props >= 9 * 5) + { + props -= 9 * 5; + ++pb; + } + lp = 0; + while (props > 9) + { + props -= 9; + ++lp; + } + lc = props; + if (unlikely (lc + lp > 4)) + { + elf_uncompress_failed (); + return 0; + } + } + + if (control >= 0xa0) + { + size_t i; + + /* Bit 5 or 6 is set, reset LZMA state. */ + + lstate = 0; + memset (&dist, 0, sizeof dist); + for (i = 0; i < LZMA_PROB_TOTAL_COUNT; i++) + probs[i] = 1 << 10; + range = 0xffffffff; + code = 0; + } + + /* Read the range code. */ + + if (unlikely (off + 5 > compressed_size)) + { + elf_uncompress_failed (); + return 0; + } + + /* The byte at compressed[off] is ignored for some + reason. */ + + code = ((compressed[off + 1] << 24) + + (compressed[off + 2] << 16) + + (compressed[off + 3] << 8) + + compressed[off + 4]); + off += 5; + + /* This is the main LZMA decode loop. */ + + limit = off + compressed_chunk_size; + *poffset = off; + while (*poffset < limit) + { + unsigned int pos_state; + + if (unlikely (uncompressed_offset + == (uncompressed_chunk_start + + uncompressed_chunk_size))) + { + /* We've decompressed all the expected bytes. */ + break; + } + + pos_state = ((uncompressed_offset - dict_start_offset) + & ((1 << pb) - 1)); + + if (elf_lzma_bit (compressed, compressed_size, + probs + LZMA_IS_MATCH (lstate, pos_state), + poffset, &range, &code)) + { + uint32_t len; + + if (elf_lzma_bit (compressed, compressed_size, + probs + LZMA_IS_REP (lstate), + poffset, &range, &code)) + { + int short_rep; + uint32_t next_dist; + + /* Repeated match. */ + + short_rep = 0; + if (elf_lzma_bit (compressed, compressed_size, + probs + LZMA_IS_REP0 (lstate), + poffset, &range, &code)) + { + if (elf_lzma_bit (compressed, compressed_size, + probs + LZMA_IS_REP1 (lstate), + poffset, &range, &code)) + { + if (elf_lzma_bit (compressed, compressed_size, + probs + LZMA_IS_REP2 (lstate), + poffset, &range, &code)) + { + next_dist = dist[3]; + dist[3] = dist[2]; + } + else + { + next_dist = dist[2]; + } + dist[2] = dist[1]; + } + else + { + next_dist = dist[1]; + } + + dist[1] = dist[0]; + dist[0] = next_dist; + } + else + { + if (!elf_lzma_bit (compressed, compressed_size, + (probs + + LZMA_IS_REP0_LONG (lstate, + pos_state)), + poffset, &range, &code)) + short_rep = 1; + } + + if (lstate < 7) + lstate = short_rep ? 9 : 8; + else + lstate = 11; + + if (short_rep) + len = 1; + else + len = elf_lzma_len (compressed, compressed_size, + probs, 1, pos_state, poffset, + &range, &code); + } + else + { + uint32_t dist_state; + uint32_t dist_slot; + uint16_t *probs_dist; + + /* Match. */ + + if (lstate < 7) + lstate = 7; + else + lstate = 10; + dist[3] = dist[2]; + dist[2] = dist[1]; + dist[1] = dist[0]; + len = elf_lzma_len (compressed, compressed_size, + probs, 0, pos_state, poffset, + &range, &code); + + if (len < 4 + 2) + dist_state = len - 2; + else + dist_state = 3; + probs_dist = probs + LZMA_DIST_SLOT (dist_state, 0); + dist_slot = elf_lzma_integer (compressed, + compressed_size, + probs_dist, 6, + poffset, &range, + &code); + if (dist_slot < LZMA_DIST_MODEL_START) + dist[0] = dist_slot; + else + { + uint32_t limit; + + limit = (dist_slot >> 1) - 1; + dist[0] = 2 + (dist_slot & 1); + if (dist_slot < LZMA_DIST_MODEL_END) + { + dist[0] <<= limit; + probs_dist = (probs + + LZMA_DIST_SPECIAL(dist[0] + - dist_slot + - 1)); + dist[0] += + elf_lzma_reverse_integer (compressed, + compressed_size, + probs_dist, + limit, poffset, + &range, &code); + } + else + { + uint32_t dist0; + uint32_t i; + + dist0 = dist[0]; + for (i = 0; i < limit - 4; i++) + { + uint32_t mask; + + elf_lzma_range_normalize (compressed, + compressed_size, + poffset, + &range, &code); + range >>= 1; + code -= range; + mask = -(code >> 31); + code += range & mask; + dist0 <<= 1; + dist0 += mask + 1; + } + dist0 <<= 4; + probs_dist = probs + LZMA_DIST_ALIGN (0); + dist0 += + elf_lzma_reverse_integer (compressed, + compressed_size, + probs_dist, 4, + poffset, + &range, &code); + dist[0] = dist0; + } + } + } + + if (unlikely (uncompressed_offset + - dict_start_offset < dist[0] + 1)) + { + elf_uncompress_failed (); + return 0; + } + if (unlikely (uncompressed_offset + len > uncompressed_size)) + { + elf_uncompress_failed (); + return 0; + } + + if (dist[0] == 0) + { + /* A common case, meaning repeat the last + character LEN times. */ + memset (uncompressed + uncompressed_offset, + uncompressed[uncompressed_offset - 1], + len); + uncompressed_offset += len; + } + else if (dist[0] + 1 >= len) + { + memcpy (uncompressed + uncompressed_offset, + uncompressed + uncompressed_offset - dist[0] - 1, + len); + uncompressed_offset += len; + } + else + { + while (len > 0) + { + uint32_t copy; + + copy = len < dist[0] + 1 ? len : dist[0] + 1; + memcpy (uncompressed + uncompressed_offset, + (uncompressed + uncompressed_offset + - dist[0] - 1), + copy); + len -= copy; + uncompressed_offset += copy; + } + } + } + else + { + unsigned char prev; + unsigned char low; + size_t high; + uint16_t *lit_probs; + unsigned int sym; + + /* Literal value. */ + + if (uncompressed_offset > 0) + prev = uncompressed[uncompressed_offset - 1]; + else + prev = 0; + low = prev >> (8 - lc); + high = (((uncompressed_offset - dict_start_offset) + & ((1 << lp) - 1)) + << lc); + lit_probs = probs + LZMA_LITERAL (low + high, 0); + if (lstate < 7) + sym = elf_lzma_integer (compressed, compressed_size, + lit_probs, 8, poffset, &range, + &code); + else + { + unsigned int match; + unsigned int bit; + unsigned int match_bit; + unsigned int idx; + + sym = 1; + if (uncompressed_offset >= dist[0] + 1) + match = uncompressed[uncompressed_offset - dist[0] - 1]; + else + match = 0; + match <<= 1; + bit = 0x100; + do + { + match_bit = match & bit; + match <<= 1; + idx = bit + match_bit + sym; + sym <<= 1; + if (elf_lzma_bit (compressed, compressed_size, + lit_probs + idx, poffset, + &range, &code)) + { + ++sym; + bit &= match_bit; + } + else + { + bit &= ~ match_bit; + } + } + while (sym < 0x100); + } + + if (unlikely (uncompressed_offset >= uncompressed_size)) + { + elf_uncompress_failed (); + return 0; + } + + uncompressed[uncompressed_offset] = (unsigned char) sym; + ++uncompressed_offset; + if (lstate <= 3) + lstate = 0; + else if (lstate <= 9) + lstate -= 3; + else + lstate -= 6; + } + } + + elf_lzma_range_normalize (compressed, compressed_size, poffset, + &range, &code); + + off = *poffset; + } + } + + /* We have reached the end of the block. Pad to four byte + boundary. */ + off = (off + 3) &~ (size_t) 3; + if (unlikely (off > compressed_size)) + { + elf_uncompress_failed (); + return 0; + } + + switch (check) + { + case 0: + /* No check. */ + break; + + case 1: + /* CRC32 */ + if (unlikely (off + 4 > compressed_size)) + { + elf_uncompress_failed (); + return 0; + } + computed_crc = elf_crc32 (0, uncompressed, uncompressed_offset); + stream_crc = (compressed[off] + | (compressed[off + 1] << 8) + | (compressed[off + 2] << 16) + | (compressed[off + 3] << 24)); + if (computed_crc != stream_crc) + { + elf_uncompress_failed (); + return 0; + } + off += 4; + break; + + case 4: + /* CRC64. We don't bother computing a CRC64 checksum. */ + if (unlikely (off + 8 > compressed_size)) + { + elf_uncompress_failed (); + return 0; + } + off += 8; + break; + + case 10: + /* SHA. We don't bother computing a SHA checksum. */ + if (unlikely (off + 32 > compressed_size)) + { + elf_uncompress_failed (); + return 0; + } + off += 32; + break; + + default: + elf_uncompress_failed (); + return 0; + } + + *poffset = off; + + return 1; +} + +/* Uncompress LZMA data found in a minidebug file. The minidebug + format is described at + https://sourceware.org/gdb/current/onlinedocs/gdb/MiniDebugInfo.html. + Returns 0 on error, 1 on successful decompression. For this + function we return 0 on failure to decompress, as the calling code + will carry on in that case. */ + +static int +elf_uncompress_lzma (struct backtrace_state *state, + const unsigned char *compressed, size_t compressed_size, + backtrace_error_callback error_callback, void *data, + unsigned char **uncompressed, size_t *uncompressed_size) +{ + size_t header_size; + size_t footer_size; + unsigned char check; + uint32_t computed_crc; + uint32_t stream_crc; + size_t offset; + size_t index_size; + size_t footer_offset; + size_t index_offset; + uint64_t index_compressed_size; + uint64_t index_uncompressed_size; + unsigned char *mem; + uint16_t *probs; + size_t compressed_block_size; + + /* The format starts with a stream header and ends with a stream + footer. */ + header_size = 12; + footer_size = 12; + if (unlikely (compressed_size < header_size + footer_size)) + { + elf_uncompress_failed (); + return 0; + } + + /* The stream header starts with a magic string. */ + if (unlikely (memcmp (compressed, "\375" "7zXZ\0", 6) != 0)) + { + elf_uncompress_failed (); + return 0; + } + + /* Next come stream flags. The first byte is zero, the second byte + is the check. */ + if (unlikely (compressed[6] != 0)) + { + elf_uncompress_failed (); + return 0; + } + check = compressed[7]; + if (unlikely ((check & 0xf8) != 0)) + { + elf_uncompress_failed (); + return 0; + } + + /* Next comes a CRC of the stream flags. */ + computed_crc = elf_crc32 (0, compressed + 6, 2); + stream_crc = (compressed[8] + | (compressed[9] << 8) + | (compressed[10] << 16) + | (compressed[11] << 24)); + if (unlikely (computed_crc != stream_crc)) + { + elf_uncompress_failed (); + return 0; + } + + /* Now that we've parsed the header, parse the footer, so that we + can get the uncompressed size. */ + + /* The footer ends with two magic bytes. */ + + offset = compressed_size; + if (unlikely (memcmp (compressed + offset - 2, "YZ", 2) != 0)) + { + elf_uncompress_failed (); + return 0; + } + offset -= 2; + + /* Before that are the stream flags, which should be the same as the + flags in the header. */ + if (unlikely (compressed[offset - 2] != 0 + || compressed[offset - 1] != check)) + { + elf_uncompress_failed (); + return 0; + } + offset -= 2; + + /* Before that is the size of the index field, which precedes the + footer. */ + index_size = (compressed[offset - 4] + | (compressed[offset - 3] << 8) + | (compressed[offset - 2] << 16) + | (compressed[offset - 1] << 24)); + index_size = (index_size + 1) * 4; + offset -= 4; + + /* Before that is a footer CRC. */ + computed_crc = elf_crc32 (0, compressed + offset, 6); + stream_crc = (compressed[offset - 4] + | (compressed[offset - 3] << 8) + | (compressed[offset - 2] << 16) + | (compressed[offset - 1] << 24)); + if (unlikely (computed_crc != stream_crc)) + { + elf_uncompress_failed (); + return 0; + } + offset -= 4; + + /* The index comes just before the footer. */ + if (unlikely (offset < index_size + header_size)) + { + elf_uncompress_failed (); + return 0; + } + + footer_offset = offset; + offset -= index_size; + index_offset = offset; + + /* The index starts with a zero byte. */ + if (unlikely (compressed[offset] != 0)) + { + elf_uncompress_failed (); + return 0; + } + ++offset; + + /* Next is the number of blocks. We expect zero blocks for an empty + stream, and otherwise a single block. */ + if (unlikely (compressed[offset] == 0)) + { + *uncompressed = NULL; + *uncompressed_size = 0; + return 1; + } + if (unlikely (compressed[offset] != 1)) + { + elf_uncompress_failed (); + return 0; + } + ++offset; + + /* Next is the compressed size and the uncompressed size. */ + if (!elf_lzma_varint (compressed, compressed_size, &offset, + &index_compressed_size)) + return 0; + if (!elf_lzma_varint (compressed, compressed_size, &offset, + &index_uncompressed_size)) + return 0; + + /* Pad to a four byte boundary. */ + offset = (offset + 3) &~ (size_t) 3; + + /* Next is a CRC of the index. */ + computed_crc = elf_crc32 (0, compressed + index_offset, + offset - index_offset); + stream_crc = (compressed[offset] + | (compressed[offset + 1] << 8) + | (compressed[offset + 2] << 16) + | (compressed[offset + 3] << 24)); + if (unlikely (computed_crc != stream_crc)) + { + elf_uncompress_failed (); + return 0; + } + offset += 4; + + /* We should now be back at the footer. */ + if (unlikely (offset != footer_offset)) + { + elf_uncompress_failed (); + return 0; + } + + /* Allocate space to hold the uncompressed data. If we succeed in + uncompressing the LZMA data, we never free this memory. */ + mem = (unsigned char *) backtrace_alloc (state, index_uncompressed_size, + error_callback, data); + if (unlikely (mem == NULL)) + return 0; + *uncompressed = mem; + *uncompressed_size = index_uncompressed_size; + + /* Allocate space for probabilities. */ + probs = ((uint16_t *) + backtrace_alloc (state, + LZMA_PROB_TOTAL_COUNT * sizeof (uint16_t), + error_callback, data)); + if (unlikely (probs == NULL)) + { + backtrace_free (state, mem, index_uncompressed_size, error_callback, + data); + return 0; + } + + /* Uncompress the block, which follows the header. */ + offset = 12; + if (!elf_uncompress_lzma_block (compressed, compressed_size, check, probs, + mem, index_uncompressed_size, &offset)) + { + backtrace_free (state, mem, index_uncompressed_size, error_callback, + data); + return 0; + } + + compressed_block_size = offset - 12; + if (unlikely (compressed_block_size + != ((index_compressed_size + 3) &~ (size_t) 3))) + { + elf_uncompress_failed (); + backtrace_free (state, mem, index_uncompressed_size, error_callback, + data); + return 0; + } + + offset = (offset + 3) &~ (size_t) 3; + if (unlikely (offset != index_offset)) + { + elf_uncompress_failed (); + backtrace_free (state, mem, index_uncompressed_size, error_callback, + data); + return 0; + } + + return 1; +} + +/* This function is a hook for testing the LZMA support. It is only + used by tests. */ + +int +backtrace_uncompress_lzma (struct backtrace_state *state, + const unsigned char *compressed, + size_t compressed_size, + backtrace_error_callback error_callback, + void *data, unsigned char **uncompressed, + size_t *uncompressed_size) +{ + return elf_uncompress_lzma (state, compressed, compressed_size, + error_callback, data, uncompressed, + uncompressed_size); +} + /* Add the backtrace data for one ELF file. Returns 1 on success, 0 on failure (in both cases descriptor is closed) or -1 if exe is non-zero and the ELF file is ET_DYN, which tells the caller that @@ -2616,23 +3968,24 @@ backtrace_uncompress_zdebug (struct backtrace_state *state, static int elf_add (struct backtrace_state *state, const char *filename, int descriptor, + const unsigned char *memory, size_t memory_size, uintptr_t base_address, backtrace_error_callback error_callback, void *data, fileline *fileline_fn, int *found_sym, int *found_dwarf, struct dwarf_data **fileline_entry, int exe, int debuginfo, const char *with_buildid_data, uint32_t with_buildid_size) { - struct backtrace_view ehdr_view; + struct elf_view ehdr_view; b_elf_ehdr ehdr; off_t shoff; unsigned int shnum; unsigned int shstrndx; - struct backtrace_view shdrs_view; + struct elf_view shdrs_view; int shdrs_view_valid; const b_elf_shdr *shdrs; const b_elf_shdr *shstrhdr; size_t shstr_size; off_t shstr_off; - struct backtrace_view names_view; + struct elf_view names_view; int names_view_valid; const char *names; unsigned int symtab_shndx; @@ -2640,31 +3993,36 @@ elf_add (struct backtrace_state *state, const char *filename, int descriptor, unsigned int i; struct debug_section_info sections[DEBUG_MAX]; struct debug_section_info zsections[DEBUG_MAX]; - struct backtrace_view symtab_view; + struct elf_view symtab_view; int symtab_view_valid; - struct backtrace_view strtab_view; + struct elf_view strtab_view; int strtab_view_valid; - struct backtrace_view buildid_view; + struct elf_view buildid_view; int buildid_view_valid; const char *buildid_data; uint32_t buildid_size; - struct backtrace_view debuglink_view; + struct elf_view debuglink_view; int debuglink_view_valid; const char *debuglink_name; uint32_t debuglink_crc; - struct backtrace_view debugaltlink_view; + struct elf_view debugaltlink_view; int debugaltlink_view_valid; const char *debugaltlink_name; const char *debugaltlink_buildid_data; uint32_t debugaltlink_buildid_size; + struct elf_view gnu_debugdata_view; + int gnu_debugdata_view_valid; + size_t gnu_debugdata_size; + unsigned char *gnu_debugdata_uncompressed; + size_t gnu_debugdata_uncompressed_size; off_t min_offset; off_t max_offset; off_t debug_size; - struct backtrace_view debug_view; + struct elf_view debug_view; int debug_view_valid; unsigned int using_debug_view; uint16_t *zdebug_table; - struct backtrace_view split_debug_view[DEBUG_MAX]; + struct elf_view split_debug_view[DEBUG_MAX]; unsigned char split_debug_view_valid[DEBUG_MAX]; struct elf_ppc64_opd_data opd_data, *opd; struct dwarf_sections dwarf_sections; @@ -2689,17 +4047,19 @@ elf_add (struct backtrace_state *state, const char *filename, int descriptor, debugaltlink_name = NULL; debugaltlink_buildid_data = NULL; debugaltlink_buildid_size = 0; + gnu_debugdata_view_valid = 0; + gnu_debugdata_size = 0; debug_view_valid = 0; memset (&split_debug_view_valid[0], 0, sizeof split_debug_view_valid); opd = NULL; - if (!backtrace_get_view (state, descriptor, 0, sizeof ehdr, error_callback, - data, &ehdr_view)) + if (!elf_get_view (state, descriptor, memory, memory_size, 0, sizeof ehdr, + error_callback, data, &ehdr_view)) goto fail; - memcpy (&ehdr, ehdr_view.data, sizeof ehdr); + memcpy (&ehdr, ehdr_view.view.data, sizeof ehdr); - backtrace_release_view (state, &ehdr_view, error_callback, data); + elf_release_view (state, &ehdr_view, error_callback, data); if (ehdr.e_ident[EI_MAG0] != ELFMAG0 || ehdr.e_ident[EI_MAG1] != ELFMAG1 @@ -2747,14 +4107,14 @@ elf_add (struct backtrace_state *state, const char *filename, int descriptor, if ((shnum == 0 || shstrndx == SHN_XINDEX) && shoff != 0) { - struct backtrace_view shdr_view; + struct elf_view shdr_view; const b_elf_shdr *shdr; - if (!backtrace_get_view (state, descriptor, shoff, sizeof shdr, - error_callback, data, &shdr_view)) + if (!elf_get_view (state, descriptor, memory, memory_size, shoff, + sizeof shdr, error_callback, data, &shdr_view)) goto fail; - shdr = (const b_elf_shdr *) shdr_view.data; + shdr = (const b_elf_shdr *) shdr_view.view.data; if (shnum == 0) shnum = shdr->sh_size; @@ -2778,7 +4138,7 @@ elf_add (struct backtrace_state *state, const char *filename, int descriptor, shstrndx -= 0x100; } - backtrace_release_view (state, &shdr_view, error_callback, data); + elf_release_view (state, &shdr_view, error_callback, data); } if (shnum == 0 || shstrndx == 0) @@ -2789,12 +4149,13 @@ elf_add (struct backtrace_state *state, const char *filename, int descriptor, /* Read the section headers, skipping the first one. */ - if (!backtrace_get_view (state, descriptor, shoff + sizeof (b_elf_shdr), - (shnum - 1) * sizeof (b_elf_shdr), - error_callback, data, &shdrs_view)) + if (!elf_get_view (state, descriptor, memory, memory_size, + shoff + sizeof (b_elf_shdr), + (shnum - 1) * sizeof (b_elf_shdr), + error_callback, data, &shdrs_view)) goto fail; shdrs_view_valid = 1; - shdrs = (const b_elf_shdr *) shdrs_view.data; + shdrs = (const b_elf_shdr *) shdrs_view.view.data; /* Read the section names. */ @@ -2802,11 +4163,11 @@ elf_add (struct backtrace_state *state, const char *filename, int descriptor, shstr_size = shstrhdr->sh_size; shstr_off = shstrhdr->sh_offset; - if (!backtrace_get_view (state, descriptor, shstr_off, shstrhdr->sh_size, - error_callback, data, &names_view)) + if (!elf_get_view (state, descriptor, memory, memory_size, shstr_off, + shstrhdr->sh_size, error_callback, data, &names_view)) goto fail; names_view_valid = 1; - names = (const char *) names_view.data; + names = (const char *) names_view.view.data; symtab_shndx = 0; dynsym_shndx = 0; @@ -2871,13 +4232,13 @@ elf_add (struct backtrace_state *state, const char *filename, int descriptor, { const b_elf_note *note; - if (!backtrace_get_view (state, descriptor, shdr->sh_offset, - shdr->sh_size, error_callback, data, - &buildid_view)) + if (!elf_get_view (state, descriptor, memory, memory_size, + shdr->sh_offset, shdr->sh_size, error_callback, + data, &buildid_view)) goto fail; buildid_view_valid = 1; - note = (const b_elf_note *) buildid_view.data; + note = (const b_elf_note *) buildid_view.view.data; if (note->type == NT_GNU_BUILD_ID && note->namesz == 4 && strncmp (note->name, "GNU", 4) == 0 @@ -2905,13 +4266,13 @@ elf_add (struct backtrace_state *state, const char *filename, int descriptor, const char *debuglink_data; size_t crc_offset; - if (!backtrace_get_view (state, descriptor, shdr->sh_offset, - shdr->sh_size, error_callback, data, - &debuglink_view)) + if (!elf_get_view (state, descriptor, memory, memory_size, + shdr->sh_offset, shdr->sh_size, error_callback, + data, &debuglink_view)) goto fail; debuglink_view_valid = 1; - debuglink_data = (const char *) debuglink_view.data; + debuglink_data = (const char *) debuglink_view.view.data; crc_offset = strnlen (debuglink_data, shdr->sh_size); crc_offset = (crc_offset + 3) & ~3; if (crc_offset + 4 <= shdr->sh_size) @@ -2927,13 +4288,13 @@ elf_add (struct backtrace_state *state, const char *filename, int descriptor, const char *debugaltlink_data; size_t debugaltlink_name_len; - if (!backtrace_get_view (state, descriptor, shdr->sh_offset, - shdr->sh_size, error_callback, data, - &debugaltlink_view)) + if (!elf_get_view (state, descriptor, memory, memory_size, + shdr->sh_offset, shdr->sh_size, error_callback, + data, &debugaltlink_view)) goto fail; debugaltlink_view_valid = 1; - debugaltlink_data = (const char *) debugaltlink_view.data; + debugaltlink_data = (const char *) debugaltlink_view.view.data; debugaltlink_name = debugaltlink_data; debugaltlink_name_len = strnlen (debugaltlink_data, shdr->sh_size); if (debugaltlink_name_len < shdr->sh_size) @@ -2947,20 +4308,32 @@ elf_add (struct backtrace_state *state, const char *filename, int descriptor, } } + if (!gnu_debugdata_view_valid + && strcmp (name, ".gnu_debugdata") == 0) + { + if (!elf_get_view (state, descriptor, memory, memory_size, + shdr->sh_offset, shdr->sh_size, error_callback, + data, &gnu_debugdata_view)) + goto fail; + + gnu_debugdata_size = shdr->sh_size; + gnu_debugdata_view_valid = 1; + } + /* Read the .opd section on PowerPC64 ELFv1. */ if (ehdr.e_machine == EM_PPC64 && (ehdr.e_flags & EF_PPC64_ABI) < 2 && shdr->sh_type == SHT_PROGBITS && strcmp (name, ".opd") == 0) { - if (!backtrace_get_view (state, descriptor, shdr->sh_offset, - shdr->sh_size, error_callback, data, - &opd_data.view)) + if (!elf_get_view (state, descriptor, memory, memory_size, + shdr->sh_offset, shdr->sh_size, error_callback, + data, &opd_data.view)) goto fail; opd = &opd_data; opd->addr = shdr->sh_addr; - opd->data = (const char *) opd_data.view.data; + opd->data = (const char *) opd_data.view.view.data; opd->size = shdr->sh_size; } } @@ -2984,15 +4357,15 @@ elf_add (struct backtrace_state *state, const char *filename, int descriptor, } strtab_shdr = &shdrs[strtab_shndx - 1]; - if (!backtrace_get_view (state, descriptor, symtab_shdr->sh_offset, - symtab_shdr->sh_size, error_callback, data, - &symtab_view)) + if (!elf_get_view (state, descriptor, memory, memory_size, + symtab_shdr->sh_offset, symtab_shdr->sh_size, + error_callback, data, &symtab_view)) goto fail; symtab_view_valid = 1; - if (!backtrace_get_view (state, descriptor, strtab_shdr->sh_offset, - strtab_shdr->sh_size, error_callback, data, - &strtab_view)) + if (!elf_get_view (state, descriptor, memory, memory_size, + strtab_shdr->sh_offset, strtab_shdr->sh_size, + error_callback, data, &strtab_view)) goto fail; strtab_view_valid = 1; @@ -3002,8 +4375,8 @@ elf_add (struct backtrace_state *state, const char *filename, int descriptor, goto fail; if (!elf_initialize_syminfo (state, base_address, - symtab_view.data, symtab_shdr->sh_size, - strtab_view.data, strtab_shdr->sh_size, + symtab_view.view.data, symtab_shdr->sh_size, + strtab_view.view.data, strtab_shdr->sh_size, error_callback, data, sdata, opd)) { backtrace_free (state, sdata, sizeof *sdata, error_callback, data); @@ -3012,7 +4385,7 @@ elf_add (struct backtrace_state *state, const char *filename, int descriptor, /* We no longer need the symbol table, but we hold on to the string table permanently. */ - backtrace_release_view (state, &symtab_view, error_callback, data); + elf_release_view (state, &symtab_view, error_callback, data); symtab_view_valid = 0; strtab_view_valid = 0; @@ -3021,9 +4394,9 @@ elf_add (struct backtrace_state *state, const char *filename, int descriptor, elf_add_syminfo_data (state, sdata); } - backtrace_release_view (state, &shdrs_view, error_callback, data); + elf_release_view (state, &shdrs_view, error_callback, data); shdrs_view_valid = 0; - backtrace_release_view (state, &names_view, error_callback, data); + elf_release_view (state, &names_view, error_callback, data); names_view_valid = 0; /* If the debug info is in a separate file, read that one instead. */ @@ -3038,19 +4411,17 @@ elf_add (struct backtrace_state *state, const char *filename, int descriptor, { int ret; - backtrace_release_view (state, &buildid_view, error_callback, data); + elf_release_view (state, &buildid_view, error_callback, data); if (debuglink_view_valid) - backtrace_release_view (state, &debuglink_view, error_callback, - data); + elf_release_view (state, &debuglink_view, error_callback, data); if (debugaltlink_view_valid) - backtrace_release_view (state, &debugaltlink_view, error_callback, - data); - ret = elf_add (state, "", d, base_address, error_callback, data, - fileline_fn, found_sym, found_dwarf, NULL, 0, 1, NULL, - 0); + elf_release_view (state, &debugaltlink_view, error_callback, data); + ret = elf_add (state, "", d, NULL, 0, base_address, error_callback, + data, fileline_fn, found_sym, found_dwarf, NULL, 0, + 1, NULL, 0); if (ret < 0) backtrace_close (d, error_callback, data); - else + else if (descriptor >= 0) backtrace_close (descriptor, error_callback, data); return ret; } @@ -3058,13 +4429,13 @@ elf_add (struct backtrace_state *state, const char *filename, int descriptor, if (buildid_view_valid) { - backtrace_release_view (state, &buildid_view, error_callback, data); + elf_release_view (state, &buildid_view, error_callback, data); buildid_view_valid = 0; } if (opd) { - backtrace_release_view (state, &opd->view, error_callback, data); + elf_release_view (state, &opd->view, error_callback, data); opd = NULL; } @@ -3079,17 +4450,15 @@ elf_add (struct backtrace_state *state, const char *filename, int descriptor, { int ret; - backtrace_release_view (state, &debuglink_view, error_callback, - data); + elf_release_view (state, &debuglink_view, error_callback, data); if (debugaltlink_view_valid) - backtrace_release_view (state, &debugaltlink_view, error_callback, - data); - ret = elf_add (state, "", d, base_address, error_callback, data, - fileline_fn, found_sym, found_dwarf, NULL, 0, 1, NULL, - 0); + elf_release_view (state, &debugaltlink_view, error_callback, data); + ret = elf_add (state, "", d, NULL, 0, base_address, error_callback, + data, fileline_fn, found_sym, found_dwarf, NULL, 0, + 1, NULL, 0); if (ret < 0) backtrace_close (d, error_callback, data); - else + else if (descriptor >= 0) backtrace_close(descriptor, error_callback, data); return ret; } @@ -3097,7 +4466,7 @@ elf_add (struct backtrace_state *state, const char *filename, int descriptor, if (debuglink_view_valid) { - backtrace_release_view (state, &debuglink_view, error_callback, data); + elf_release_view (state, &debuglink_view, error_callback, data); debuglink_view_valid = 0; } @@ -3112,12 +4481,11 @@ elf_add (struct backtrace_state *state, const char *filename, int descriptor, { int ret; - ret = elf_add (state, filename, d, base_address, error_callback, data, - fileline_fn, found_sym, found_dwarf, &fileline_altlink, - 0, 1, debugaltlink_buildid_data, - debugaltlink_buildid_size); - backtrace_release_view (state, &debugaltlink_view, error_callback, - data); + ret = elf_add (state, filename, d, NULL, 0, base_address, + error_callback, data, fileline_fn, found_sym, + found_dwarf, &fileline_altlink, 0, 1, + debugaltlink_buildid_data, debugaltlink_buildid_size); + elf_release_view (state, &debugaltlink_view, error_callback, data); debugaltlink_view_valid = 0; if (ret < 0) { @@ -3129,10 +4497,36 @@ elf_add (struct backtrace_state *state, const char *filename, int descriptor, if (debugaltlink_view_valid) { - backtrace_release_view (state, &debugaltlink_view, error_callback, data); + elf_release_view (state, &debugaltlink_view, error_callback, data); debugaltlink_view_valid = 0; } + if (gnu_debugdata_view_valid) + { + int ret; + + ret = elf_uncompress_lzma (state, + ((const unsigned char *) + gnu_debugdata_view.view.data), + gnu_debugdata_size, error_callback, data, + &gnu_debugdata_uncompressed, + &gnu_debugdata_uncompressed_size); + + elf_release_view (state, &gnu_debugdata_view, error_callback, data); + gnu_debugdata_view_valid = 0; + + if (ret) + { + ret = elf_add (state, filename, -1, gnu_debugdata_uncompressed, + gnu_debugdata_uncompressed_size, base_address, + error_callback, data, fileline_fn, found_sym, + found_dwarf, NULL, 0, 0, NULL, 0); + if (ret >= 0 && descriptor >= 0) + backtrace_close(descriptor, error_callback, data); + return ret; + } + } + /* Read all the debug sections in a single view, since they are probably adjacent in the file. If any of sections are uncompressed, we never release this view. */ @@ -3165,8 +4559,11 @@ elf_add (struct backtrace_state *state, const char *filename, int descriptor, } if (min_offset == 0 || max_offset == 0) { - if (!backtrace_close (descriptor, error_callback, data)) - goto fail; + if (descriptor >= 0) + { + if (!backtrace_close (descriptor, error_callback, data)) + goto fail; + } return 1; } @@ -3176,9 +4573,9 @@ elf_add (struct backtrace_state *state, const char *filename, int descriptor, if (max_offset - min_offset < 0x20000000 || max_offset - min_offset < debug_size + 0x10000) { - if (!backtrace_get_view (state, descriptor, min_offset, - max_offset - min_offset, - error_callback, data, &debug_view)) + if (!elf_get_view (state, descriptor, memory, memory_size, min_offset, + max_offset - min_offset, error_callback, data, + &debug_view)) goto fail; debug_view_valid = 1; } @@ -3196,24 +4593,28 @@ elf_add (struct backtrace_state *state, const char *filename, int descriptor, else continue; - if (!backtrace_get_view (state, descriptor, dsec->offset, dsec->size, - error_callback, data, &split_debug_view[i])) + if (!elf_get_view (state, descriptor, memory, memory_size, + dsec->offset, dsec->size, error_callback, data, + &split_debug_view[i])) goto fail; split_debug_view_valid[i] = 1; if (sections[i].size != 0) sections[i].data = ((const unsigned char *) - split_debug_view[i].data); + split_debug_view[i].view.data); else zsections[i].data = ((const unsigned char *) - split_debug_view[i].data); + split_debug_view[i].view.data); } } /* We've read all we need from the executable. */ - if (!backtrace_close (descriptor, error_callback, data)) - goto fail; - descriptor = -1; + if (descriptor >= 0) + { + if (!backtrace_close (descriptor, error_callback, data)) + goto fail; + descriptor = -1; + } using_debug_view = 0; if (debug_view_valid) @@ -3224,7 +4625,7 @@ elf_add (struct backtrace_state *state, const char *filename, int descriptor, sections[i].data = NULL; else { - sections[i].data = ((const unsigned char *) debug_view.data + sections[i].data = ((const unsigned char *) debug_view.view.data + (sections[i].offset - min_offset)); ++using_debug_view; } @@ -3232,7 +4633,7 @@ elf_add (struct backtrace_state *state, const char *filename, int descriptor, if (zsections[i].size == 0) zsections[i].data = NULL; else - zsections[i].data = ((const unsigned char *) debug_view.data + zsections[i].data = ((const unsigned char *) debug_view.view.data + (zsections[i].offset - min_offset)); } } @@ -3269,8 +4670,8 @@ elf_add (struct backtrace_state *state, const char *filename, int descriptor, if (split_debug_view_valid[i]) { - backtrace_release_view (state, &split_debug_view[i], - error_callback, data); + elf_release_view (state, &split_debug_view[i], + error_callback, data); split_debug_view_valid[i] = 0; } } @@ -3309,8 +4710,7 @@ elf_add (struct backtrace_state *state, const char *filename, int descriptor, --using_debug_view; else if (split_debug_view_valid[i]) { - backtrace_release_view (state, &split_debug_view[i], - error_callback, data); + elf_release_view (state, &split_debug_view[i], error_callback, data); split_debug_view_valid[i] = 0; } } @@ -3321,7 +4721,7 @@ elf_add (struct backtrace_state *state, const char *filename, int descriptor, if (debug_view_valid && using_debug_view == 0) { - backtrace_release_view (state, &debug_view, error_callback, data); + elf_release_view (state, &debug_view, error_callback, data); debug_view_valid = 0; } @@ -3344,30 +4744,31 @@ elf_add (struct backtrace_state *state, const char *filename, int descriptor, fail: if (shdrs_view_valid) - backtrace_release_view (state, &shdrs_view, error_callback, data); + elf_release_view (state, &shdrs_view, error_callback, data); if (names_view_valid) - backtrace_release_view (state, &names_view, error_callback, data); + elf_release_view (state, &names_view, error_callback, data); if (symtab_view_valid) - backtrace_release_view (state, &symtab_view, error_callback, data); + elf_release_view (state, &symtab_view, error_callback, data); if (strtab_view_valid) - backtrace_release_view (state, &strtab_view, error_callback, data); + elf_release_view (state, &strtab_view, error_callback, data); if (debuglink_view_valid) - backtrace_release_view (state, &debuglink_view, error_callback, data); + elf_release_view (state, &debuglink_view, error_callback, data); if (debugaltlink_view_valid) - backtrace_release_view (state, &debugaltlink_view, error_callback, data); + elf_release_view (state, &debugaltlink_view, error_callback, data); + if (gnu_debugdata_view_valid) + elf_release_view (state, &gnu_debugdata_view, error_callback, data); if (buildid_view_valid) - backtrace_release_view (state, &buildid_view, error_callback, data); + elf_release_view (state, &buildid_view, error_callback, data); if (debug_view_valid) - backtrace_release_view (state, &debug_view, error_callback, data); + elf_release_view (state, &debug_view, error_callback, data); for (i = 0; i < (int) DEBUG_MAX; ++i) { if (split_debug_view_valid[i]) - backtrace_release_view (state, &split_debug_view[i], - error_callback, data); + elf_release_view (state, &split_debug_view[i], error_callback, data); } if (opd) - backtrace_release_view (state, &opd->view, error_callback, data); - if (descriptor != -1) + elf_release_view (state, &opd->view, error_callback, data); + if (descriptor >= 0) backtrace_close (descriptor, error_callback, data); return 0; } @@ -3429,7 +4830,7 @@ phdr_callback (struct dl_phdr_info *info, size_t size ATTRIBUTE_UNUSED, return 0; } - if (elf_add (pd->state, filename, descriptor, info->dlpi_addr, + if (elf_add (pd->state, filename, descriptor, NULL, 0, info->dlpi_addr, pd->error_callback, pd->data, &elf_fileline_fn, pd->found_sym, &found_dwarf, NULL, 0, 0, NULL, 0)) { @@ -3458,7 +4859,7 @@ backtrace_initialize (struct backtrace_state *state, const char *filename, fileline elf_fileline_fn = elf_nodebug; struct phdr_data pd; - ret = elf_add (state, filename, descriptor, 0, error_callback, data, + ret = elf_add (state, filename, descriptor, NULL, 0, 0, error_callback, data, &elf_fileline_fn, &found_sym, &found_dwarf, NULL, 1, 0, NULL, 0); if (!ret) diff --git a/libbacktrace/internal.h b/libbacktrace/internal.h index be99bb0c84c..09862337456 100644 --- a/libbacktrace/internal.h +++ b/libbacktrace/internal.h @@ -335,4 +335,13 @@ extern int backtrace_uncompress_zdebug (struct backtrace_state *, unsigned char **uncompressed, size_t *uncompressed_size); +/* A test-only hook for elf_uncompress_lzma. */ + +extern int backtrace_uncompress_lzma (struct backtrace_state *, + const unsigned char *compressed, + size_t compressed_size, + backtrace_error_callback, void *data, + unsigned char **uncompressed, + size_t *uncompressed_size); + #endif diff --git a/libbacktrace/mtest.c b/libbacktrace/mtest.c new file mode 100644 index 00000000000..d90fd1e33cc --- /dev/null +++ b/libbacktrace/mtest.c @@ -0,0 +1,401 @@ +/* mtest.c -- Minidebug test for libbacktrace library + Copyright (C) 2020 Free Software Foundation, Inc. + Written by Ian Lance Taylor, Google. + +Redistribution and use in source and binary forms, with or without +modification, are permitted provided that the following conditions are +met: + + (1) Redistributions of source code must retain the above copyright + notice, this list of conditions and the following disclaimer. + + (2) 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. + + (3) The name of the author may not be used to + endorse or promote products derived from this software without + specific prior written permission. + +THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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. */ + +/* This program tests using libbacktrace with a program that uses the + minidebuginfo format in a .gnu_debugdata section. See + https://sourceware.org/gdb/current/onlinedocs/gdb/MiniDebugInfo.html + for a bit more information about minidebuginfo. What is relevant + for libbacktrace is that we have just a symbol table, with no debug + info, so we should be able to do a function backtrace, but we can't + do a file/line backtrace. */ + +#include <assert.h> +#include <stdlib.h> +#include <string.h> + +#include "backtrace.h" +#include "backtrace-supported.h" + +#include "testlib.h" + +static int test1 (void) __attribute__ ((noinline, noclone, unused)); +static int f2 (int) __attribute__ ((noinline, noclone)); +static int f3 (int, int) __attribute__ ((noinline, noclone)); + +/* Collected PC values. */ + +static uintptr_t addrs[20]; + +/* The backtrace callback function. This is like callback_one in + testlib.c, but it saves the PC also. */ + +static int +callback_mtest (void *vdata, uintptr_t pc, const char *filename, int lineno, + const char *function) +{ + struct bdata *data = (struct bdata *) vdata; + + if (data->index >= sizeof addrs / sizeof addrs[0]) + { + fprintf (stderr, "callback_mtest: callback called too many times\n"); + data->failed = 1; + return 1; + } + + addrs[data->index] = pc; + + return callback_one (vdata, pc, filename, lineno, function); +} + +/* Test the backtrace function with non-inlined functions. (We don't + test with inlined functions because they won't work with minidebug + anyhow.) */ + +static int +test1 (void) +{ + /* Returning a value here and elsewhere avoids a tailcall which + would mess up the backtrace. */ + return f2 (__LINE__) + 1; +} + +static int +f2 (int f1line) +{ + return f3 (f1line, __LINE__) + 2; +} + +static int +f3 (int f1line __attribute__ ((unused)), int f2line __attribute__ ((unused))) +{ + struct info all[20]; + struct bdata data; + int i; + size_t j; + + data.all = &all[0]; + data.index = 0; + data.max = 20; + data.failed = 0; + + i = backtrace_full (state, 0, callback_mtest, error_callback_one, &data); + + if (i != 0) + { + fprintf (stderr, "test1: unexpected return value %d\n", i); + data.failed = 1; + } + + if (data.index < 3) + { + fprintf (stderr, + "test1: not enough frames; got %zu, expected at least 3\n", + data.index); + data.failed = 1; + } + + /* When using minidebug we don't expect the function name here. */ + + for (j = 0; j < 3 && j < data.index; j++) + { + if (all[j].function == NULL) + { + struct symdata symdata; + + symdata.name = NULL; + symdata.val = 0; + symdata.size = 0; + symdata.failed = 0; + + i = backtrace_syminfo (state, addrs[j], callback_three, + error_callback_three, &symdata); + if (i == 0) + { + fprintf (stderr, + ("test1: [%zu], unexpected return value from " + "backtrace_syminfo %d\n"), + j, i); + data.failed = 1; + } + else if (symdata.name == NULL) + { + fprintf (stderr, "test1: [%zu]: syminfo did not find name\n", j); + data.failed = 1; + } + else + all[j].function = strdup (symdata.name); + } + } + + if (all[0].function == NULL) + { + fprintf (stderr, "test1: [0]: missing function name\n"); + data.failed = 1; + } + else if (strcmp (all[0].function, "f3") != 0) + { + fprintf (stderr, "test1: [0]: got %s expected %s\n", + all[0].function, "f3"); + data.failed = 1; + } + + if (all[1].function == NULL) + { + fprintf (stderr, "test1: [1]: missing function name\n"); + data.failed = 1; + } + else if (strcmp (all[1].function, "f2") != 0) + { + fprintf (stderr, "test1: [1]: got %s expected %s\n", + all[0].function, "f2"); + data.failed = 1; + } + + if (all[2].function == NULL) + { + fprintf (stderr, "test1: [2]: missing function name\n"); + data.failed = 1; + } + else if (strcmp (all[2].function, "test1") != 0) + { + fprintf (stderr, "test1: [2]: got %s expected %s\n", + all[0].function, "test1"); + data.failed = 1; + } + + printf ("%s: backtrace_full noinline\n", data.failed ? "FAIL" : "PASS"); + + if (data.failed) + ++failures; + + return failures; +} + +/* Test the backtrace_simple function with non-inlined functions. */ + +static int test3 (void) __attribute__ ((noinline, noclone, unused)); +static int f22 (int) __attribute__ ((noinline, noclone)); +static int f23 (int, int) __attribute__ ((noinline, noclone)); + +static int +test3 (void) +{ + return f22 (__LINE__) + 1; +} + +static int +f22 (int f1line) +{ + return f23 (f1line, __LINE__) + 2; +} + +static int +f23 (int f1line __attribute__ ((unused)), int f2line __attribute__ ((unused))) +{ + uintptr_t addrs[20]; + struct sdata data; + int i; + + data.addrs = &addrs[0]; + data.index = 0; + data.max = 20; + data.failed = 0; + + i = backtrace_simple (state, 0, callback_two, error_callback_two, &data); + + if (i != 0) + { + fprintf (stderr, "test3: unexpected return value %d\n", i); + data.failed = 1; + } + + if (!data.failed) + { + int j; + + for (j = 0; j < 3; ++j) + { + struct symdata symdata; + + symdata.name = NULL; + symdata.val = 0; + symdata.size = 0; + symdata.failed = 0; + + i = backtrace_syminfo (state, addrs[j], callback_three, + error_callback_three, &symdata); + if (i == 0) + { + fprintf (stderr, + ("test3: [%d]: unexpected return value " + "from backtrace_syminfo %d\n"), + j, i); + symdata.failed = 1; + } + + if (!symdata.failed) + { + const char *expected; + + switch (j) + { + case 0: + expected = "f23"; + break; + case 1: + expected = "f22"; + break; + case 2: + expected = "test3"; + break; + default: + assert (0); + } + + if (symdata.name == NULL) + { + fprintf (stderr, "test3: [%d]: NULL syminfo name\n", j); + symdata.failed = 1; + } + /* Use strncmp, not strcmp, because GCC might create a + clone. */ + else if (strncmp (symdata.name, expected, strlen (expected)) + != 0) + { + fprintf (stderr, + ("test3: [%d]: unexpected syminfo name " + "got %s expected %s\n"), + j, symdata.name, expected); + symdata.failed = 1; + } + } + + if (symdata.failed) + data.failed = 1; + } + } + + printf ("%s: backtrace_simple noinline\n", data.failed ? "FAIL" : "PASS"); + + if (data.failed) + ++failures; + + return failures; +} + +int test5 (void) __attribute__ ((unused)); + +int global = 1; + +int +test5 (void) +{ + struct symdata symdata; + int i; + uintptr_t addr = (uintptr_t) &global; + + if (sizeof (global) > 1) + addr += 1; + + symdata.name = NULL; + symdata.val = 0; + symdata.size = 0; + symdata.failed = 0; + + i = backtrace_syminfo (state, addr, callback_three, + error_callback_three, &symdata); + if (i == 0) + { + fprintf (stderr, + "test5: unexpected return value from backtrace_syminfo %d\n", + i); + symdata.failed = 1; + } + + if (!symdata.failed) + { + if (symdata.name == NULL) + { + fprintf (stderr, "test5: NULL syminfo name\n"); + symdata.failed = 1; + } + else if (!(strncmp (symdata.name, "global", 6) == 0 + && (symdata.name[6] == '\0'|| symdata.name[6] == '.'))) + { + fprintf (stderr, + "test5: unexpected syminfo name got %s expected %s\n", + symdata.name, "global"); + symdata.failed = 1; + } + else if (symdata.val != (uintptr_t) &global) + { + fprintf (stderr, + "test5: unexpected syminfo value got %lx expected %lx\n", + (unsigned long) symdata.val, + (unsigned long) (uintptr_t) &global); + symdata.failed = 1; + } + else if (symdata.size != sizeof (global)) + { + fprintf (stderr, + "test5: unexpected syminfo size got %lx expected %lx\n", + (unsigned long) symdata.size, + (unsigned long) sizeof (global)); + symdata.failed = 1; + } + } + + printf ("%s: backtrace_syminfo variable\n", + symdata.failed ? "FAIL" : "PASS"); + + if (symdata.failed) + ++failures; + + return failures; +} + +int +main (int argc ATTRIBUTE_UNUSED, char **argv) +{ + state = backtrace_create_state (argv[0], BACKTRACE_SUPPORTS_THREADS, + error_callback_create, NULL); + +#if BACKTRACE_SUPPORTED + test1 (); + test3 (); +#if BACKTRACE_SUPPORTS_DATA + test5 (); +#endif +#endif + + exit (failures ? EXIT_FAILURE : EXIT_SUCCESS); +} diff --git a/libbacktrace/xztest.c b/libbacktrace/xztest.c new file mode 100644 index 00000000000..4fffe99fcf0 --- /dev/null +++ b/libbacktrace/xztest.c @@ -0,0 +1,508 @@ +/* xztest.c -- Test for libbacktrace LZMA decoder. + Copyright (C) 2020 Free Software Foundation, Inc. + Written by Ian Lance Taylor, Google. + +Redistribution and use in source and binary forms, with or without +modification, are permitted provided that the following conditions are +met: + + (1) Redistributions of source code must retain the above copyright + notice, this list of conditions and the following disclaimer. + + (2) 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. + + (3) The name of the author may not be used to + endorse or promote products derived from this software without + specific prior written permission. + +THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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. */ + +#include "config.h" + +#include <errno.h> +#include <limits.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <time.h> +#include <sys/types.h> +#include <sys/stat.h> + +#ifdef HAVE_LIBLZMA +#include <lzma.h> +#endif + +#include "backtrace.h" +#include "backtrace-supported.h" + +#include "internal.h" +#include "testlib.h" + +#ifndef HAVE_CLOCK_GETTIME + +typedef int xclockid_t; + +static int +xclock_gettime (xclockid_t id ATTRIBUTE_UNUSED, + struct timespec *ts ATTRIBUTE_UNUSED) +{ + errno = EINVAL; + return -1; +} + +#define clockid_t xclockid_t +#define clock_gettime xclock_gettime +#undef CLOCK_REALTIME +#define CLOCK_REALTIME 0 + +#endif /* !defined(HAVE_CLOCK_GETTIME) */ + +#ifdef CLOCK_PROCESS_CPUTIME_ID +#define LIBLZMA_CLOCK_GETTIME_ARG CLOCK_PROCESS_CPUTIME_ID +#else +#define LIBLZMA_CLOCK_GETTIME_ARG CLOCK_REALTIME +#endif + +/* Some tests for the local lzma inflation code. */ + +struct lzma_test +{ + const char *name; + const char *uncompressed; + size_t uncompressed_len; + const char *compressed; + size_t compressed_len; +}; + +/* Error callback. */ + +static void +error_callback_compress (void *vdata ATTRIBUTE_UNUSED, const char *msg, + int errnum) +{ + fprintf (stderr, "%s", msg); + if (errnum > 0) + fprintf (stderr, ": %s", strerror (errnum)); + fprintf (stderr, "\n"); + exit (EXIT_FAILURE); +} + +static const struct lzma_test tests[] = +{ + { + "empty", + "", + 0, + ("\xfd\x37\x7a\x58\x5a\x00\x00\x04\xe6\xd6\xb4\x46\x00\x00\x00\x00" + "\x1c\xdf\x44\x21\x1f\xb6\xf3\x7d\x01\x00\x00\x00\x00\x04\x59\x5a"), + 32, + }, + { + "hello", + "hello, world\n", + 0, + ("\xfd\x37\x7a\x58\x5a\x00\x00\x04\xe6\xd6\xb4\x46\x02\x00\x21\x01" + "\x16\x00\x00\x00\x74\x2f\xe5\xa3\x01\x00\x0c\x68\x65\x6c\x6c\x6f" + "\x2c\x20\x77\x6f\x72\x6c\x64\x0a\x00\x00\x00\x00\x7b\x46\x5a\x81" + "\xc9\x12\xb8\xea\x00\x01\x25\x0d\x71\x19\xc4\xb6\x1f\xb6\xf3\x7d" + "\x01\x00\x00\x00\x00\x04\x59\x5a"), + 72, + }, + { + "goodbye", + "goodbye, world", + 0, + ("\xfd\x37\x7a\x58\x5a\x00\x00\x04\xe6\xd6\xb4\x46\x02\x00\x21\x01" + "\x16\x00\x00\x00\x74\x2f\xe5\xa3\x01\x00\x0d\x67\x6f\x6f\x64\x62" + "\x79\x65\x2c\x20\x77\x6f\x72\x6c\x64\x00\x00\x00\xf6\xf8\xa3\x33" + "\x8c\x4e\xc9\x68\x00\x01\x26\x0e\x08\x1b\xe0\x04\x1f\xb6\xf3\x7d" + "\x01\x00\x00\x00\x00\x04\x59\x5a"), + 72, + }, +}; + +/* Test the hand coded samples. */ + +static void +test_samples (struct backtrace_state *state) +{ + size_t i; + + for (i = 0; i < sizeof tests / sizeof tests[0]; ++i) + { + unsigned char *uncompressed; + size_t uncompressed_len; + + uncompressed = NULL; + uncompressed_len = 0; + if (!backtrace_uncompress_lzma (state, + ((const unsigned char *) + tests[i].compressed), + tests[i].compressed_len, + error_callback_compress, NULL, + &uncompressed, &uncompressed_len)) + { + fprintf (stderr, "test %s: uncompress failed\n", tests[i].name); + ++failures; + } + else + { + size_t v; + + v = tests[i].uncompressed_len; + if (v == 0) + v = strlen (tests[i].uncompressed); + if (uncompressed_len != v) + { + fprintf (stderr, + "test %s: got uncompressed length %zu, want %zu\n", + tests[i].name, uncompressed_len, v); + ++failures; + } + else if (memcmp (tests[i].uncompressed, uncompressed, v) != 0) + { + size_t j; + + fprintf (stderr, "test %s: uncompressed data mismatch\n", + tests[i].name); + for (j = 0; j < v; ++j) + if (tests[i].uncompressed[j] != uncompressed[j]) + fprintf (stderr, " %zu: got %#x want %#x\n", j, + uncompressed[j], tests[i].uncompressed[j]); + ++failures; + } + else + printf ("PASS: lzma %s\n", tests[i].name); + + backtrace_free (state, uncompressed, uncompressed_len, + error_callback_compress, NULL); + } + } +} + +#if HAVE_LIBLZMA + +/* Given a set of TRIALS timings, discard the lowest and highest + values and return the mean average of the rest. */ + +static size_t +average_time (const size_t *times, size_t trials) +{ + size_t imax; + size_t max; + size_t imin; + size_t min; + size_t i; + size_t sum; + + imin = 0; + imax = 0; + min = times[0]; + max = times[0]; + for (i = 1; i < trials; ++i) + { + if (times[i] < min) + { + imin = i; + min = times[i]; + } + if (times[i] > max) + { + imax = i; + max = times[i]; + } + } + + sum = 0; + for (i = 0; i < trials; ++i) + { + if (i != imax && i != imin) + sum += times[i]; + } + return sum / (trials - 2); +} + +#endif + +/* Test a larger text, if available. */ + +static void +test_large (struct backtrace_state *state ATTRIBUTE_UNUSED) +{ +#if HAVE_LIBLZMA + unsigned char *orig_buf; + size_t orig_bufsize; + size_t i; + lzma_stream initial_stream = LZMA_STREAM_INIT; + lzma_stream stream; + unsigned char *compressed_buf; + size_t compressed_bufsize; + unsigned char *uncompressed_buf; + size_t uncompressed_bufsize; + unsigned char *spare_buf; + int r; + clockid_t cid; + struct timespec ts1; + struct timespec ts2; + size_t ctime; + size_t ztime; + const size_t trials = 16; + size_t ctimes[16]; + size_t ztimes[16]; + static const char * const names[] = { + "Isaac.Newton-Opticks.txt", + "../libgo/go/testdata/Isaac.Newton-Opticks.txt", + }; + + orig_buf = NULL; + orig_bufsize = 0; + uncompressed_buf = NULL; + compressed_buf = NULL; + + for (i = 0; i < sizeof names / sizeof names[0]; ++i) + { + size_t len; + char *namebuf; + FILE *e; + struct stat st; + char *rbuf; + size_t got; + + len = strlen (SRCDIR) + strlen (names[i]) + 2; + namebuf = malloc (len); + if (namebuf == NULL) + { + perror ("malloc"); + goto fail; + } + snprintf (namebuf, len, "%s/%s", SRCDIR, names[i]); + e = fopen (namebuf, "r"); + free (namebuf); + if (e == NULL) + continue; + if (fstat (fileno (e), &st) < 0) + { + perror ("fstat"); + fclose (e); + continue; + } + rbuf = malloc (st.st_size); + if (rbuf == NULL) + { + perror ("malloc"); + goto fail; + } + got = fread (rbuf, 1, st.st_size, e); + fclose (e); + if (got > 0) + { + orig_buf = (unsigned char *) rbuf; + orig_bufsize = got; + break; + } + free (rbuf); + } + + if (orig_buf == NULL) + { + /* We couldn't find an input file. */ + printf ("UNSUPPORTED: lzma large\n"); + return; + } + + stream = initial_stream; + r = lzma_easy_encoder (&stream, 6, LZMA_CHECK_CRC32); + if (r != LZMA_OK) + { + fprintf (stderr, "lzma_easy_encoder failed: %d\n", r); + goto fail; + } + + compressed_bufsize = orig_bufsize + 100; + compressed_buf = malloc (compressed_bufsize); + if (compressed_buf == NULL) + { + perror ("malloc"); + goto fail; + } + + stream.next_in = orig_buf; + stream.avail_in = orig_bufsize; + stream.next_out = compressed_buf; + stream.avail_out = compressed_bufsize; + + do + { + r = lzma_code (&stream, LZMA_FINISH); + if (r != LZMA_OK && r != LZMA_STREAM_END) + { + fprintf (stderr, "lzma_code failed: %d\n", r); + goto fail; + } + } + while (r != LZMA_STREAM_END); + + compressed_bufsize = stream.total_out; + + if (!backtrace_uncompress_lzma (state, (unsigned char *) compressed_buf, + compressed_bufsize, + error_callback_compress, NULL, + &uncompressed_buf, &uncompressed_bufsize)) + { + fprintf (stderr, "lzma large: backtrace_uncompress_lzma failed\n"); + goto fail; + } + + if (uncompressed_bufsize != orig_bufsize) + { + fprintf (stderr, + "lzma large: got uncompressed length %zu, want %zu\n", + uncompressed_bufsize, orig_bufsize); + goto fail; + } + + if (memcmp (uncompressed_buf, orig_buf, uncompressed_bufsize) != 0) + { + fprintf (stderr, "lzma large: uncompressed data mismatch\n"); + goto fail; + } + + printf ("PASS: lzma large\n"); + + spare_buf = malloc (orig_bufsize); + if (spare_buf == NULL) + { + perror ("malloc"); + goto fail; + } + + for (i = 0; i < trials; ++i) + { + cid = LIBLZMA_CLOCK_GETTIME_ARG; + if (clock_gettime (cid, &ts1) < 0) + { + if (errno == EINVAL) + return; + perror ("clock_gettime"); + return; + } + + if (!backtrace_uncompress_lzma (state, + (unsigned char *) compressed_buf, + compressed_bufsize, + error_callback_compress, NULL, + &uncompressed_buf, + &uncompressed_bufsize)) + { + fprintf (stderr, + ("lzma large: " + "benchmark backtrace_uncompress_lzma failed\n")); + return; + } + + if (clock_gettime (cid, &ts2) < 0) + { + perror ("clock_gettime"); + return; + } + + ctime = (ts2.tv_sec - ts1.tv_sec) * 1000000000; + ctime += ts2.tv_nsec - ts1.tv_nsec; + ctimes[i] = ctime; + + stream = initial_stream; + + r = lzma_auto_decoder (&stream, UINT64_MAX, 0); + if (r != LZMA_OK) + { + fprintf (stderr, "lzma_stream_decoder failed: %d\n", r); + goto fail; + } + + stream.next_in = compressed_buf; + stream.avail_in = compressed_bufsize; + stream.next_out = spare_buf; + stream.avail_out = orig_bufsize; + + if (clock_gettime (cid, &ts1) < 0) + { + perror("clock_gettime"); + return; + } + + do + { + r = lzma_code (&stream, LZMA_FINISH); + if (r != LZMA_OK && r != LZMA_STREAM_END) + { + fprintf (stderr, "lzma_code failed: %d\n", r); + goto fail; + } + } + while (r != LZMA_STREAM_END); + + if (clock_gettime (cid, &ts2) < 0) + { + perror ("clock_gettime"); + return; + } + + ztime = (ts2.tv_sec - ts1.tv_sec) * 1000000000; + ztime += ts2.tv_nsec - ts1.tv_nsec; + ztimes[i] = ztime; + } + + /* Toss the highest and lowest times and average the rest. */ + ctime = average_time (ctimes, trials); + ztime = average_time (ztimes, trials); + + printf ("backtrace: %zu ns\n", ctime); + printf ("liblzma : %zu ns\n", ztime); + printf ("ratio : %g\n", (double) ztime / (double) ctime); + + return; + + fail: + printf ("FAIL: lzma large\n"); + ++failures; + + if (orig_buf != NULL) + free (orig_buf); + if (compressed_buf != NULL) + free (compressed_buf); + if (uncompressed_buf != NULL) + free (uncompressed_buf); + +#else /* !HAVE_LIBLZMA */ + + printf ("UNSUPPORTED: lzma large\n"); + +#endif /* !HAVE_LIBLZMA */ +} + +int +main (int argc ATTRIBUTE_UNUSED, char **argv) +{ + struct backtrace_state *state; + + state = backtrace_create_state (argv[0], BACKTRACE_SUPPORTS_THREADS, + error_callback_create, NULL); + + test_samples (state); + test_large (state); + + exit (failures != 0 ? EXIT_FAILURE : EXIT_SUCCESS); +} |