diff options
author | Jan Kratochvil <jan.kratochvil@redhat.com> | 2017-12-08 22:44:10 +0000 |
---|---|---|
committer | Pedro Alves <palves@redhat.com> | 2017-12-08 23:33:27 +0000 |
commit | 437afbb81e3a04cbd933fc534a50c686eaa63b19 (patch) | |
tree | 9389ec170eff92880790a69075e48eccb3afdccc /gdb/contrib | |
parent | 6432ec65a8822246db5bcede0c6bd3ed0e464a0b (diff) | |
download | binutils-437afbb81e3a04cbd933fc534a50c686eaa63b19.zip binutils-437afbb81e3a04cbd933fc534a50c686eaa63b19.tar.gz binutils-437afbb81e3a04cbd933fc534a50c686eaa63b19.tar.bz2 |
DWARF-5: .debug_names index producer
This adds a new "-dwarf-5" switch to "save gdb-index" that makes it
generate index files with DWARF-5 .debug_names/.debug_str sections
instead of GDB's own .gdb_index.
We should probably add a command line option to
contrib/gdb-add-index.sh (incl. cc-with-tweaks.sh) for the new
-dwarf-5 GDB option, and a new target board to make it more convenient
to exercise this. To be done later.
gdb/ChangeLog
2017-12-08 Jan Kratochvil <jan.kratochvil@redhat.com>
Pedro Alves <palves@redhat.com>
* contrib/gdb-add-index.sh (index): Rename to ...
(index4): ... here.
(index5, debugstr, debugstrmerge, debugstrerr): New variables.
Support also .debug_names and .debug_str.
* dwarf2read.c: Include cmath, set, list.
(INDEX_SUFFIX): Rename to ...
(INDEX4_SUFFIX): ... here.
(INDEX5_SUFFIX, DEBUG_STR_SUFFIX): New.
(file_write(FILE *, const void *, size_t)): New.
(file_write(FILE *, const std::vector<Elem, Alloc> &)): New.
(data_buf::append_unsigned_leb128, data_buf::empty): New.
(data_buf::file_write): Use ::file_write.
(data_buf::c_str, dwarf5_djb_hash, debug_names)
(check_dwarf64_offsets): New.
(psyms_seen_size, write_gdbindex): New from
write_psymtabs_to_index code.
(dwarf5_gdb_augmentation, write_debug_names, assert_file_size)
(enum dw_index_kind): New.
(write_psymtabs_to_index): New parameter index_kind. Support
filename_str and out_file_str. Move code to write_gdbindex,
possibly call write_debug_names.
(save_gdb_index_command): New parameter -dwarf-5.
(_initialize_dwarf2_read): Document the new parameter -dwarf-5.
gdb/doc/ChangeLog
2017-12-08 Jan Kratochvil <jan.kratochvil@redhat.com>
* gdb.texinfo (Index Files): Document .debug_names and -dwarf-5.
--
gdb/contrib/gdb-add-index.sh | 53 ++
gdb/doc/gdb.texinfo | 24 +
gdb/dwarf2read.c | 919 ++++++++++++++++++++++++++++++++++++++++--
3 files changed, 935 insertions(+), 61 deletions(-)
Diffstat (limited to 'gdb/contrib')
-rwxr-xr-x | gdb/contrib/gdb-add-index.sh | 53 |
1 files changed, 47 insertions, 6 deletions
diff --git a/gdb/contrib/gdb-add-index.sh b/gdb/contrib/gdb-add-index.sh index 0cd4ce3..02b17f0 100755 --- a/gdb/contrib/gdb-add-index.sh +++ b/gdb/contrib/gdb-add-index.sh @@ -37,11 +37,15 @@ fi dir="${file%/*}" test "$dir" = "$file" && dir="." -index="${file}.gdb-index" +index4="${file}.gdb-index" +index5="${file}.debug_names" +debugstr="${file}.debug_str" +debugstrmerge="${file}.debug_str.merge" +debugstrerr="${file}.debug_str.err" -rm -f $index +rm -f $index4 $index5 $debugstr $debugstrmerge $debugstrerr # Ensure intermediate index file is removed when we exit. -trap "rm -f $index" 0 +trap "rm -f $index4 $index5 $debugstr $debugstrmerge $debugstrerr" 0 $GDB --batch -nx -iex 'set auto-load no' \ -ex "file $file" -ex "save gdb-index $dir" || { @@ -57,9 +61,46 @@ $GDB --batch -nx -iex 'set auto-load no' \ # already stripped binary, it's a no-op. status=0 -if test -f "$index"; then - $OBJCOPY --add-section .gdb_index="$index" \ - --set-section-flags .gdb_index=readonly "$file" "$file" +if test -f "$index4" -a -f "$index5"; then + echo "$myname: Both index types were created for $file" 1>&2 + status=1 +elif test -f "$index4" -o -f "$index5"; then + if test -f "$index4"; then + index="$index4" + section=".gdb_index" + else + index="$index5" + section=".debug_names" + fi + debugstradd=false + debugstrupdate=false + if test -s "$debugstr"; then + if ! $OBJCOPY --dump-section .debug_str="$debugstrmerge" "$file" /dev/null \ + 2>$debugstrerr; then + cat >&2 $debugstrerr + exit 1 + fi + if grep -q "can't dump section '.debug_str' - it does not exist" \ + $debugstrerr; then + debugstradd=true + else + debugstrupdate=true + cat >&2 $debugstrerr + fi + cat "$debugstr" >>"$debugstrmerge" + fi + + $OBJCOPY --add-section $section="$index" \ + --set-section-flags $section=readonly \ + $(if $debugstradd; then \ + echo --add-section .debug_str="$debugstrmerge"; \ + echo --set-section-flags .debug_str=readonly; \ + fi; \ + if $debugstrupdate; then \ + echo --update-section .debug_str="$debugstrmerge"; \ + fi) \ + "$file" "$file" + status=$? else echo "$myname: No index was created for $file" 1>&2 |