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| author | Ian Lance Taylor <iant@golang.org> | 2019-12-13 20:04:47 +0000 |
|---|---|---|
| committer | Ian Lance Taylor <ian@gcc.gnu.org> | 2019-12-13 20:04:47 +0000 |
| commit | c926fd82bbd336b317266d43b9fa67a83397b06b (patch) | |
| tree | 2f686f2d4657aa570473986e7d0924794093c67b /libbacktrace/configure.ac | |
| parent | 510873f901ffa34391b4b744c939e6ac33d1e663 (diff) | |
| download | gcc-c926fd82bbd336b317266d43b9fa67a83397b06b.zip gcc-c926fd82bbd336b317266d43b9fa67a83397b06b.tar.gz gcc-c926fd82bbd336b317266d43b9fa67a83397b06b.tar.bz2 | |
libbacktrace: add DWARF 5 support
* dwarf.c (struct attr): Add val field.
(enum attr_val_encoding): Add ATTR_VAL_ADDDRESS_INDEX,
ATTR_VAL_STRING_INDEX, ATTR_VAL_RNGLISTS_INDEX.
(struct line_header): Add addrsize field.
(struct line_header_format): Define.
(struct unit): Add str_offsets_base, addr_base, and rnglists_base
fields.
(read_uint24): New static function.
(read_attribute): Add implicit_val parameter. Replace dwarf_str
and dwarf_str_size parameters with dwarf_sections parameter. Add
support for new DWARF 5 forms. Change all callers.
(resolve_string): New static function.
(resolve_addr_index): Likewise.
(read_abbrevs): Support DW_FORM_implicit_const.
(struct pcrange): Add lowpc_is_addr_index, highpc_is_addr_Index,
and ranges_is_index fields.
(update_pcrange): Support DWARF 5 encodings.
(add_high_low_range): New static function, split out of
add_ranges.
(add_ranges_from_ranges): Likewise.
(add_ranges_from_rnglists): New static function.
(add_ranges): Just call new helper functions.
(find_address_ranges): Use resolve_string for strings, after
reading all attributes. Handle new DWARF 5 attributes.
(build_address_map): Support DWARF 5 compilation units.
(read_v2_paths): New static function, split out of
read_line_header.
(read_lnct): New static function.
(read_line_header_format_entries): Likewise.
(read_line_header): Add ddata parameter. Support DWARF 5 line
headers. Call new helper functions. Change all callers.
(read_line_program): Use addrsize from line program header. Don't
special case directory index 0 for DWARF 5.
(read_referenced_name): Use resolve_string.
(read_function_entry): Handle DWARF 5 encodings. Use
resolve_string.
* internal.h (enum dwarf_section): Add DEBUG_ADDR,
DEBUG_STR_OFFSETS, DEBUG_LINE_STR, DEBUG_RNGLISTS.
* elf.c (dwarf_section_names): Add new section names.
* pecoff.c (dwarf_section_names): Likewise.
* xcoff.c (xcoff_add): Clear dwarf_sections before setting
fields.
* configure.ac: Define HAVE_DWARF5 automake conditional.
* Makefile.am (dwarf5_SOURCES): New variable if HAVE_DWARF5.
(dwarf5_CFLAGS, dwarf5_LDADD): Likewise.
(dwarf5_alloc_SOURCES, dwarf5_alloc_CFLAGS): Likewise.
(dwarf5_alloc_LDADD): Likewise.
(BUILDTESTS): Add dwarf5 tests if HAVE_DWARF5.
(CLEANFILES, clean-local): Define.
From-SVN: r279380
Diffstat (limited to 'libbacktrace/configure.ac')
| -rw-r--r-- | libbacktrace/configure.ac | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/libbacktrace/configure.ac b/libbacktrace/configure.ac index a657ef6..cda4f09 100644 --- a/libbacktrace/configure.ac +++ b/libbacktrace/configure.ac @@ -420,6 +420,17 @@ AC_SUBST(PTHREAD_CFLAGS) AM_CONDITIONAL(HAVE_PTHREAD, test "$libgo_cv_lib_pthread" = yes) +dnl Test whether the compiler supports the -gdwarf-5 option. +AC_CACHE_CHECK([whether -gdwarf-5 is supported], +[libbacktrace_cv_lib_dwarf5], +[CFLAGS_hold=$CFLAGS +CFLAGS="$CFLAGS -gdwarf-5" +AC_COMPILE_IFELSE([AC_LANG_SOURCE([int i;])], +[libbacktrace_cv_lib_dwarf5=yes], +[libbacktrace_cv_lib_dwarf5=no]) +CFLAGS=$CFLAGS_hold]) +AM_CONDITIONAL(HAVE_DWARF5, test "$libbacktrace_cv_lib_dwarf5" = yes) + AC_CHECK_LIB([z], [compress], [AC_DEFINE(HAVE_ZLIB, 1, [Define if -lz is available.])]) AM_CONDITIONAL(HAVE_ZLIB, test "$ac_cv_lib_z_compress" = yes) |