3 readelf: Add -D, --use-dynamic option.
5 debuginfod-client: Add $DEBUGINFOD_HEADERS_FILE setting to supply outgoing
6 HTTP headers. Add new function debuginfod_find_section.
8 debuginfod: Add --disable-source-scan option.
10 libdwfl: Add new function dwfl_get_debuginfod_client.
11 Add new function dwfl_frame_reg.
12 Add new function dwfl_report_offline_memory.
16 debuginfod: Support -C option for connection thread pooling.
18 debuginfod-client: Negative cache file are now zero sized instead of
21 addr2line: The -A, --absolute option, which shows file names including
22 the full compilation directory is now the default. To get the
23 old behavior use the new option --relative.
25 readelf, elflint: Recognize FDO Packaging Metadata ELF notes
27 libdw, debuginfo-client: Load libcurl lazily only when files need to
28 be fetched remotely. libcurl is now never
29 loaded when DEBUGINFOD_URLS is unset. And when
30 DEBUGINFOD_URLS is set, libcurl is only loaded
31 when the debuginfod_begin function is called.
35 debuginfod-client: Default $DEBUGINFOD_URLS is computed from drop-in files
36 /etc/debuginfod/*.urls rather than hardcoded into the
37 /etc/profile.d/debuginfod* scripts.
38 Add $DEBUGINFOD_MAXSIZE and $DEBUGINFOD_MAXTIME settings
39 for skipping large/slow transfers.
40 Add $DEBUGINFOD_RETRY for retrying aborted lookups.
42 debuginfod: Supply extra HTTP response headers, describing archive/file
43 names that satisfy the requested buildid content.
44 Support -d :memory: option for in-memory databases.
45 Protect against loops in federated server configurations.
46 Add -r option to use -I/-X regexes for grooming stale files.
47 Protect against wasted CPU from duplicate concurrent requests.
48 Limit the duration of groom ops roughly to rescan (-t) times.
49 Add --passive mode for serving from read-only database.
50 Several other performance improvements & prometheus metrics.
52 libdw: Support for the NVIDIA Cuda line map extensions.
53 DW_LNE_NVIDIA_inlined_call and DW_LNE_NVIDIA_set_function_name
54 are defined in dwarf.h. New functions dwarf_linecontext and
55 dwarf_linefunctionname
57 translations: Update Japanese translation.
61 debuginfod-client: Simplify curl handle reuse so downloads which
62 return an error are retried.
64 elfcompress: Always exit with code 0 when the operation succeeds (even
65 when nothing was done). On error the exit code is now always 1.
69 debuginfod: Use libarchive's bsdtar as the .deb-family file unpacker.
71 debuginfod-client: Client caches negative results. If a query for a
72 file failed with 404, an empty 000 permission
73 file is created in the cache. This will prevent
74 requesting the same file for the next 10 minutes.
76 Client objects now carry long-lived curl handles
77 for outgoing connections. This makes it more
78 efficient for multiple sequential queries, because
79 the TCP connections and/or TLS state info are kept
80 around awhile, avoiding O(100ms) setup latencies.
82 libdw: handle DW_FORM_indirect when reading attributes
84 translations: Update Polish translation.
88 debuginfod: New thread-busy metric and more detailed error metrics.
89 New --fdcache-mintmp and tracking of filesystem freespace.
90 New increased webapi concurrency while grooming.
92 debuginfod-client: DEBUGINFOD_SONAME macro added to debuginfod.h which
93 can be used to dlopen the libdebuginfod.so library.
94 New function debuginfod_set_verbose_fd and
95 DEBUGINFOD_VERBOSE environment variable.
97 config: profile.sh and profile.csh won't export DEBUGINFOD_URLS unless
98 configured --enable-debuginfod-urls[=URLS]
100 elflint, readelf: Recognize SHF_GNU_RETAIN.
101 Handle SHT_X86_64_UNWIND as valid relocation target.
105 backends: Support for tilegx has been removed.
107 config: New /etc/profile.d files to provide default $DEBUGINFOD_URLS.
109 debuginfod: More efficient package traversal, tolerate various errors
110 during scanning, grooming progress is more visible and
111 interruptible, more prometheus metrics.
113 debuginfod-client: Now supports compressed (kernel) ELF images.
115 libdwfl: Add ZSTD compression support.
119 libelf: elf_update now compensates (fixes up) a bad sh_addralign for
120 SHF_COMPRESSED sections.
122 libdebuginfod: configure now takes --enable-libdebuginfod=dummy or
123 --disable-libdebuginfod for bootstrapping.
124 DEBUGINFOD_URLS now accepts "scheme-free" urls
125 (guessing at what the user meant, either http:// or file://)
127 readelf, elflint: Handle aarch64 bti, pac bits in dynamic table and gnu
130 libdw, readelf: Recognize DW_CFA_AARCH64_negate_ra_state. Allows unwinding
131 on arm64 for code that is compiled for PAC (Pointer
132 Authentication Code) as long as it isn't enabled.
136 elflint: Allow SHF_EXCLUDE as generic section flag when --gnu is given.
138 libdw, readelf: Handle GCC LTO .gnu.debuglto_ prefix.
140 libdw: Use correct CU to resolve file names in dwarf_decl_file.
142 libdwfl: Handle debugaltlink in dwfl_standard_find_debuginfo.
144 size: Also obey radix printing for bsd format.
146 nm: Explicitly print weak 'V' or 'T' and common 'C' symbols.
150 debuginfod-client: When DEBUGINFOD_PROGRESS is set and the program doesn't
151 install its own debuginfod_progressfn_t show download
153 DEBUGINFOD_TIMEOUT is now defined as seconds to get at
154 least 100K, defaults to 90 seconds.
155 Default to $XDG_CACHE_HOME/debuginfod_client.
156 New functions debuginfod_set_user_data,
157 debuginfod_get_user_data, debuginfod_get_url and
158 debuginfod_add_http_header.
159 Support for file:// URLs.
161 debuginfod: Uses libarchive directly for reading rpm archives.
162 Support for indexing .deb/.ddeb archives through dpkg-deb
164 Generic archive support through -Z EXT[=CMD]. Which can be
165 used for example for arch-linux pacman files by using
166 -Z '.tar.zst=zstdcat'.
167 Better logging using User-Agent and X-Forwarded-For headers.
168 More prometheus metrics.
169 Support for eliding dots or extraneous slashes in path names.
171 debuginfod-find: Accept /path/names in place of buildid hex.
173 libelf: Handle PN_XNUM in elf_getphdrnum before shdr 0 is cached
174 Ensure zlib resource cleanup on failure.
176 libdwfl: dwfl_linux_kernel_find_elf and dwfl_linux_kernel_report_offline
177 now find and handle a compressed vmlinuz image.
179 readelf, elflint: Handle PT_GNU_PROPERTY.
181 translations: Updated Ukrainian translation.
185 debuginfod: New server, client tool and library to index and fetch
186 ELF/DWARF files addressed by build-id through HTTP.
188 doc: There are now some manual pages for functions and tools.
190 backends: The libebl libraries are no longer dynamically loaded through
191 dlopen, but are now compiled into libdw.so directly.
193 readelf: -n, --notes now takes an optional "SECTION" argument.
194 -p and -x now also handle section numbers.
195 New option --dyn-sym to show just the dynamic symbol table.
197 libcpu: Add RISC-V disassembler.
199 libdw: Abbrevs and DIEs can now be read concurrently by multiple
200 threads through the same Dwarf handle.
202 libdwfl: Will try to use debuginfod when installed as fallback to
203 retrieve ELF and DWARF debug data files by build-id.
207 elfclassify: New tool to analyze ELF objects.
209 readelf: Print DW_AT_data_member_location as decimal offset.
210 Decode DW_AT_discr_list block attributes.
212 libdw: Add DW_AT_GNU_numerator, DW_AT_GNU_denominator and DW_AT_GNU_bias.
214 libdwelf: Add dwelf_elf_e_machine_string.
215 dwelf_elf_begin now only returns NULL when there is an error
216 reading or decompressing a file. If the file is not an ELF file
217 an ELF handle of type ELF_K_NONE is returned.
219 backends: Add support for C-SKY.
223 build: Add new --enable-install-elfh option.
224 Do NOT use this for system installs (it overrides glibc elf.h).
226 backends: riscv improved core file and return value location support.
228 Fixes CVE-2019-7146, CVE-2019-7148, CVE-2019-7149, CVE-2019-7150,
229 CVE-2019-7664, CVE-2019-7665
233 readelf: Handle multiple .debug_macro sections.
234 Recognize and parse GNU Property notes, NT_VERSION notes
235 and GNU Build Attribute ELF Notes.
237 strip: Handle SHT_GROUP correctly.
238 Add strip --reloc-debug-sections-only option.
239 Handle relocations against GNU compressed sections.
241 libdwelf: New function dwelf_elf_begin.
243 libcpu: Recognize bpf jump variants BPF_JLT, BPF_JLE, BPF_JSLT and BPF_JSLE.
245 backends: RISCV handles ADD/SUB relocations. Handle SHT_X86_64_UNWIND.
247 Fixes CVE-2018-18310, CVE-2018-18520 and CVE-2018-18521.
251 libelf, libdw and all tools now handle extended shnum and shstrndx correctly.
253 elfcompress: Don't rewrite input file if no section data needs updating.
254 Try harder to keep same file mode bits (suid) on rewrite.
256 strip: Handle mixed (out of order) allocated/non-allocated sections.
258 unstrip: Handle SHT_GROUP sections.
260 backends: RISCV and M68K now have backend implementations to generate CFI based
263 Fixes CVE-2018-16062, CVE-2018-16402 and CVE-2018-16403.
267 More fixes for crashes and hangs found by afl-fuzz. In particular various
268 functions now detect and break infinite loops caused by bad DIE tree cycles.
270 readelf: Will now lookup the size and signedness of constant value types
271 to display them correctly (and not just how they were encoded).
273 libdw: New function dwarf_next_lines to read CU-less .debug_line data.
274 dwarf_begin_elf now accepts ELF files containing just .debug_line
275 or .debug_frame sections (which can be read without needing a DIE
276 tree from the .debug_info section).
277 Removed dwarf_getscn_info, which was never implemented.
279 backends: Handle BPF simple relocations.
280 The RISCV backends now handles ABI specific CFI and knows about
281 RISCV register types and names.
285 No functional changes compared to 0.171.
287 Various bug fixes in libdw and eu-readelf dealing with bad DWARF5 data.
288 Thanks to running the afl fuzzer on eu-readelf and various testcases.
290 eu-readelf -N is ~15% faster.
294 DWARF5 and split dwarf, including GNU DebugFission, are supported now.
295 Data can be read from the new DWARF sections .debug_addr, .debug_line_str,
296 .debug_loclists, .debug_str_offsets and .debug_rnglists. Plus the new
297 DWARF5 and GNU DebugFission encodings of the existing .debug sections.
298 Also in split DWARF .dwo (DWARF object) files. This support is mostly
299 handled by existing functions (dwarf_getlocation*, dwarf_getsrclines,
300 dwarf_ranges, dwarf_form*, etc.) now returning the data from the new
301 sections and data formats. But some new functions have been added
302 to more easily get information about skeleton and split compile units
303 (dwarf_get_units and dwarf_cu_info), handle new attribute data
304 (dwarf_getabbrevattr_data) and to keep references to Dwarf_Dies
305 that might come from different sections or files (dwarf_die_addr_die).
307 Not yet supported are .dwp (Dwarf Package) and .sup (Dwarf Supplementary)
308 files, the .debug_names index, the .debug_cu_index and .debug_tu_index
309 sections. Only a single .debug_info (and .debug_types) section are
312 readelf: Handle all new DWARF5 sections.
313 --debug-dump=info+ will show split unit DIEs when found.
314 --dwarf-skeleton can be used when inspecting a .dwo file.
315 Recognizes GNU locviews with --debug-dump=loc.
317 libdw: New functions dwarf_die_addr_die, dwarf_get_units,
318 dwarf_getabbrevattr_data and dwarf_cu_info.
319 libdw will now try to resolve the alt file on first use of
320 an alt attribute FORM when not set yet with dwarf_set_alt.
321 dwarf_aggregate_size() now works with multi-dimensional arrays.
323 libdwfl: Use process_vm_readv when available instead of ptrace.
325 backends: Add a RISC-V backend.
327 There were various improvements to build on Windows.
328 The sha1 and md5 implementations have been removed, they weren't used.
332 libdw: Added new DWARF5 attribute, tag, character encoding, language code,
333 calling convention, defaulted member function and macro constants
335 New functions dwarf_default_lower_bound and dwarf_line_file.
336 dwarf_peel_type now handles DWARF5 immutable, packed and shared tags.
337 dwarf_getmacros now handles DWARF5 .debug_macro sections.
339 strip: Add -R, --remove-section=SECTION and --keep-section=SECTION.
341 backends: The bpf disassembler is now always build on all platforms.
345 backends: Add support for EM_PPC64 GNU_ATTRIBUTES.
346 Frame pointer unwinding fallback support for i386, x86_64, aarch64.
348 translations: Update Polish translation.
352 http://elfutils.org/ is now hosted at http://sourceware.org/elfutils/
354 libelf: gelf_newehdr and gelf_newehdr now return void *.
356 libdw: dwarf.h corrected the DW_LANG_PLI constant name (was DW_LANG_PL1).
358 readelf: Add optional --symbols[=SECTION] argument to select section name.
362 libasm: Add eBPF disassembler for EM_BPF files.
364 backends: Add m68k and BPF backends.
368 dwelf: Add ELF/DWARF string table creation functions. dwelf_strtab_init,
369 dwelf_strtab_add, dwelf_strtab_add_len, dwelf_strtab_finalize,
370 dwelf_strent_off, dwelf_strent_str and dwelf_strtab_free.
374 config: The default program prefix for the installed tools is now eu-.
375 Use configure --program-prefix="" to not use a program prefix.
379 elfcompress: New utility to compress or decompress ELF sections.
381 readelf: Add -z,--decompress option.
383 libelf: Add elf_compress, elf_compress_gnu, elf32_getchdr, elf64_getchdr
386 libdwelf: New function dwelf_scn_gnu_compressed_size.
388 config: Add libelf and libdw pkg-config files.
390 backends: sparc support for core and live backtraces.
392 translations: Updated Polish translation.
396 strip, unstrip: Handle ELF files with merged strtab/shstrtab tables.
397 Handle missing SHF_INFO_LINK section flags.
399 libelf: Use int64_t for offsets in libelf.h instead of loff_t.
401 libdw: dwarf.h Add preliminary DWARF5 DW_LANG_Haskell.
403 libdwfl: dwfl_standard_find_debuginfo now searches any subdir of the binary
404 path under the debuginfo root when the separate debug file couldn't
405 be found by build-id.
406 dwfl_linux_proc_attach can now be called before any Dwfl_Modules
409 backends: Better sparc and sparc64 support.
411 translations: Updated Ukrainian translation.
413 Provide default-yama-scope subpackage.
417 Bug fixes only, no new features.
421 libdw: Install new header elfutils/known-dwarf.h.
422 dwarf.h Add preliminary DWARF5 constants DW_TAG_atomic_type,
423 DW_LANG_Fortran03, DW_LANG_Fortran08. dwarf_peel_type now also
424 handles DW_TAG_atomic_type.
426 addr2line: Input addresses are now always interpreted as hexadecimal
427 numbers, never as octal or decimal numbers.
428 New option -a, --addresses to print address before each entry.
429 New option -C, --demangle to show demangled symbols.
430 New option --pretty-print to print all information on one line.
432 ar: CVE-2014-9447 Directory traversal vulnerability in ar extraction.
434 backends: x32 support.
438 libdw: New function dwarf_peel_type. dwarf_aggregate_size now uses
439 dwarf_peel_type to also provide the sizes of qualified types.
440 dwarf_getmacros will now serve either of .debug_macro and
441 .debug_macinfo transparently. New interfaces
442 dwarf_getmacros_off, dwarf_macro_getsrcfiles,
443 dwarf_macro_getparamcnt, and dwarf_macro_param are available
444 for more generalized inspection of macros and their parameters.
445 dwarf.h: Add DW_AT_GNU_deleted, DW_AT_noreturn, DW_LANG_C11,
446 DW_LANG_C_plus_plus_11 and DW_LANG_C_plus_plus_14.
450 libdw: New functions dwarf_cu_getdwarf, dwarf_cu_die.
451 dwarf.h remove non-existing DW_TAG_mutable_type.
453 libdwfl: Handle LZMA .ko.xz compressed kernel modules.
455 unstrip: New option -F, --force to combining files even if some ELF headers
458 backends: Handle ARM THUMB functions. Add support for ppc64le ELFv2 abi.
462 stack: New option -d, --debugname to lookup DWARF debuginfo name for frame.
463 New option -i, --inlines to show inlined frames using DWARF debuginfo.
465 libdwelf: New libdwelf.h header for libdw.so DWARF ELF Low-level Functions.
466 New function dwelf_elf_gnu_debuglink, dwelf_dwarf_gnu_debugaltlink,
467 and dwelf_elf_gnu_build_id.
469 libdw: Support for DWZ multifile forms DW_FORM_GNU_ref_alt and
470 DW_FORM_GNU_strp_alt is now enabled by default and no longer
471 experimental. Added new functions dwarf_getalt and dwarf_setalt
472 to get or set the alternative debug file used for the alt FORMs.
473 The dwfl_linux_proc_find_elf callback will now find ELF from
474 process memory for (deleted) files if the Dwfl has process state
477 libdwfl: The dwfl_build_id_find_debuginfo and dwfl_standard_find_debuginfo
478 functions will now try to resolve and set the alternative debug file.
480 backends: Add CFI unwinding for arm. Relies on .debug_frame.
481 Add arm process initial register state compatible mode to AARCH64.
482 Add aarch64 native and core unwind support.
484 other: All separate elfutils-robustify patches have been merged.
485 CVE-2014-0172 Check overflow before calling malloc to uncompress data.
489 libdwfl: dwfl_core_file_report has new parameter executable.
490 New functions dwfl_module_getsymtab_first_global,
491 dwfl_module_getsym_info and dwfl_module_addrinfo.
492 Added unwinder with type Dwfl_Thread_Callbacks, opaque types
493 Dwfl_Thread and Dwfl_Frame and functions dwfl_attach_state,
494 dwfl_pid, dwfl_thread_dwfl, dwfl_thread_tid, dwfl_frame_thread,
495 dwfl_thread_state_registers, dwfl_thread_state_register_pc,
496 dwfl_getthread_frames, dwfl_getthreads, dwfl_thread_getframes
499 addr2line: New option -x to show the section an address was found in.
501 stack: New utility that uses the new unwinder for processes and cores.
503 backends: Unwinder support for i386, x86_64, s390, s390x, ppc and ppc64.
508 libdw: Add new functions dwarf_getlocations, dwarf_getlocation_attr
509 and dwarf_getlocation_die.
511 readelf: Show contents of NT_SIGINFO and NT_FILE core notes.
513 addr2line: Support -i, --inlines output option.
515 backends: abi_cfi hook for arm, ppc and s390.
519 lib: New macro COMPAT_VERSION_NEWPROTO.
521 libdw: Handle GNU extension opcodes in dwarf_getlocation.
523 libdwfl: Fix STB_GLOBAL over STB_WEAK preference in dwfl_module_addrsym.
524 Add minisymtab support.
525 Add parameter add_p_vaddr to dwfl_report_elf.
526 Use DT_DEBUG library search first.
528 libebl: Handle new core note types in EBL.
530 backends: Interpret NT_ARM_VFP.
531 Implement core file registers parsing for s390/s390x.
533 readelf: Add --elf-section input option to inspect an embedded ELF file.
534 Add -U, --unresolved-address-offsets output control.
535 Add --debug-dump=decodedline support.
536 Accept version 8 .gdb_index section format.
537 Adjust output formatting width.
538 When highpc is in constant form print it also as address.
539 Display raw .debug_aranges. Use libdw only for decodedaranges.
541 elflint: Add __bss_start__ to the list of allowed symbols.
543 tests: Add configure --enable-valgrind option to run all tests under valgrind.
544 Enable automake parallel-tests for make check.
546 translations: Updated Polish translation.
548 Updates for Automake 1.13.
552 libelf: elf*_xlatetomd now works for cross-endian ELF note data.
553 elf_getshdr now works consistently on non-mmaped ELF files after
554 calling elf_cntl(ELF_C_FDREAD).
555 Implement support for ar archives with 64-bit symbol table.
557 libdw: dwarf.h corrected the DW_LANG_ObjC constant name (was DW_LANG_Objc).
558 Any existing sources using the old name will have to be updated.
559 Add DW_MACRO_GNU .debug_macro type encodings constants, DW_ATE_UTF
560 and DW_OP_GNU_parameter_ref to dwarf.h.
561 Experimental support for DWZ multifile forms DW_FORM_GNU_ref_alt
562 and DW_FORM_GNU_strp_alt. Disabled by default. Use configure
563 --enable-dwz to test it.
565 readelf: Add .debug_macro parsing support.
566 Add .gdb_index version 7 parsing support.
567 Recognize DW_OP_GNU_parameter_ref.
569 backends: Add support for Tilera TILE-Gx processor.
571 translations: Updated Ukrainian translation.
575 libelf: [g]elf[32|64]_offscn() do not match SHT_NOBITS sections at OFFSET.
577 libdw: dwarf_highpc function now handles DWARF 4 DW_AT_high_pc constant form.
578 Fix bug using dwarf_next_unit to iterate over .debug_types.
580 elflint: Now accepts gold linker produced executables.
582 The license is now GPLv2/LGPLv3+ for the libraries and GPLv3+ for stand-alone
583 programs. There is now also a formal CONTRIBUTING document describing how to
588 libdw: Support reading .zdebug_* DWARF sections compressed via zlib.
590 libdwfl: Speed up dwfl_module_addrsym.
592 nm: Support C++ demangling.
594 ar: Support D modifier for "deterministic output" with no uid/gid/mtime info.
595 The U modifier is the inverse.
596 elfutils can be configured with the --enable-deterministic-archives
597 option to make the D behavior the default when U is not specified.
599 ranlib: Support -D and -U flags with same meaning.
601 readelf: Improve output of -wline. Add support for printing SDT elf notes.
602 Add printing of .gdb_index section.
603 Support for typed DWARF stack, call_site and entry_value.
605 strip: Add --reloc-debug-sections option.
606 Improved SHT_GROUP sections handling.
610 Various build and warning nits fixed for newest GCC and Autoconf.
612 libdwfl: Yet another prelink-related fix for another regression.
613 Look for Linux kernel images in files named with compression suffixes.
615 elfcmp: New flag --ignore-build-id to ignore differing build ID bits.
616 New flag -l/--verbose to print all differences.
620 libdwfl: Fix for more prelink cases with separate debug file.
622 strip: New flag --strip-sections to remove section headers entirely.
626 libdw: Fix for handling huge .debug_aranges section.
628 libdwfl: Fix for handling prelinked DSO with separate debug file.
630 findtextrel: Fix diagnostics to work with usual section ordering.
632 libebl: i386 backend fix for multi-register integer return value location.
636 libdw: Decode new DW_OP_GNU_implicit_pointer operation;
637 new function dwarf_getlocation_implicit_pointer.
639 libdwfl: New function dwfl_dwarf_line.
641 addr2line: New flag -F/--flags to print more DWARF line information details.
643 strip: -g recognizes .gdb_index as a debugging section.
647 libdw: Accept DWARF 4 format: new functions dwarf_next_unit, dwarf_offdie_types.
648 New functions dwarf_lineisa, dwarf_linediscriminator, dwarf_lineop_index.
650 libdwfl: Fixes in core-file handling, support cores from PIEs.
651 When working from build IDs, don't open a named file that mismatches.
653 readelf: Handle DWARF 4 formats.
657 libdw: Fixes in CFI handling, best possible handling of bogus CFA ops.
659 libdwfl: Ignore R_*_NONE relocs, works around old (binutils) ld -r bugs.
663 libdwfl: New function dwfl_core_file_report.
667 Fix build with --disable-dependency-tracking.
669 Fix build with most recent glibc headers.
671 libelf: More robust to bogus section headers.
673 libdw: Fix CFI decoding.
675 libdwfl: Fix address bias returned by CFI accessors.
676 Fix core file module layout identification.
678 readelf: Fix CFI decoding.
682 libelf: New function elf_getphdrnum.
683 Now support using more than 65536 program headers in a file.
685 libdw: New function dwarf_aggregate_size for computing (constant) type
686 sizes, including array_type cases with nontrivial calculation.
688 readelf: Don't give errors for missing info under -a.
689 Handle Linux "VMCOREINFO" notes under -n.
693 libdw: Various convenience functions for individual attributes now use
694 dwarf_attr_integrate to look up indirect inherited attributes.
695 Location expression handling now supports DW_OP_implicit_value.
697 libdwfl: Support automatic decompression of files in XZ format,
698 and of Linux kernel images made with bzip2 or LZMA (as well as gzip).
702 libelf: Add elf_getshdrnum alias for elf_getshnum and elf_getshdrstrndx alias
703 for elf_getshstrndx and deprecate original names. Sun screwed up
704 their implementation and asked for a solution.
706 libebl: Add support for STB_GNU_UNIQUE.
708 elflint: Add support for STB_GNU_UNIQUE.
710 readelf: Add -N option, speeds up DWARF printing without address->name lookups.
712 libdw: Add support for decoding DWARF CFI into location description form.
713 Handle some new DWARF 3 expression operations previously omitted.
714 Basic handling of some new encodings slated for DWARF 4.
718 libebl: sparc backend fixes;
719 some more arm backend support
721 libdwfl: fix dwfl_module_build_id for prelinked DSO case;
722 fixes in core file support;
723 dwfl_module_getsym interface improved for non-address symbols
725 strip: fix infinite loop on strange inputs with -f
727 addr2line: take -j/--section=NAME option for binutils compatibility
728 (same effect as '(NAME)0x123' syntax already supported)
732 libelf: Fix regression in creation of section header
734 libdwfl: Less strict behavior if DWARF reader is just used to display data
738 libcpu: Add Intel SSE4 disassembler support
740 readelf: Implement call frame information and exception handling dumping.
741 Add -e option. Enable it implicitly for -a.
743 elflint: Check PT_GNU_EH_FRAME program header entry.
745 libdwfl: Support automatic gzip/bzip2 decompression of ELF files.
749 Install <elfutils/version.h> header file for applications to use in source
750 version compatibility checks.
752 libebl: backend fixes for i386 TLS relocs; backend support for NT_386_IOPERM
754 libcpu: disassembler fixes
760 nm: bug fixes for handling corrupt input files
764 Minor fixes for unreleased 0.136 release.
768 libdwfl: bug fixes; new "segment" interfaces;
769 all the libdwfl-based tools now support --core=COREFILE option
775 strip: changed handling of ET_REL files wrt symbol tables and relocs
779 elflint: backend improvements for sparc, alpha
781 libdwfl, libelf: bug fixes
785 readelf, elflint, libebl: SHT_GNU_ATTRIBUTE section handling (readelf -A)
787 readelf: core note handling for NT_386_TLS, NT_PPC_SPE, Alpha NT_AUXV
789 libdwfl: bug fixes and optimization in relocation handling
791 elfcmp: bug fix for non-allocated section handling
793 ld: implement newer features of binutils linker.
797 libcpu: Implement x86 and x86-64 disassembler.
798 libasm: Add interface for disassembler.
800 all programs: add debugging of branch prediction.
802 libelf: new function elf_scnshndx.
806 libdw: DW_FORM_ref_addr support; dwarf_formref entry point now deprecated;
807 bug fixes for oddly-formatted DWARF
809 libdwfl: bug fixes in offline archive support, symbol table handling;
810 apply partial relocations for dwfl_module_address_section on ET_REL
812 libebl: powerpc backend support for Altivec registers
816 readelf: -p option can take an argument like -x for one section,
817 or no argument (as before) for all SHF_STRINGS sections;
818 new option --archive-index (or -c);
819 improved -n output for core files, on many machines
821 libelf: new function elf_getdata_rawchunk, replaces gelf_rawchunk;
822 new functions gelf_getnote, gelf_getauxv, gelf_update_auxv
824 readelf, elflint: handle SHT_NOTE sections without requiring phdrs
826 elflint: stricter checks on debug sections
828 libdwfl: new functions dwfl_build_id_find_elf, dwfl_build_id_find_debuginfo,
829 dwfl_module_build_id, dwfl_module_report_build_id;
830 support dynamic symbol tables found via phdrs;
831 dwfl_standard_find_debuginfo now uses build IDs when available
833 unstrip: new option --list (or -n)
835 libebl: backend improvements for sparc, alpha, powerpc
839 readelf: new options --hex-dump (or -x), --strings (or -p)
841 addr2line: new option --symbols (or -S)
847 elfcmp: new option --hash-inexact
851 libdw: new function dwarf_getsrcdirs
853 libdwfl: new functions dwfl_module_addrsym, dwfl_report_begin_add,
854 dwfl_module_address_section
862 elflint: Compare DT_GNU_HASH tests.
864 move archives into -static RPMs
866 libelf, elflint: better support for core file handling
870 libebl: sparc backend support for return value location
872 libebl, libdwfl: backend register name support extended with more info
874 libelf, libdw: bug fixes for unaligned accesses on machines that care
876 readelf, elflint: trivial bugs fixed
880 libebl: Backend build fixes, thanks to Stepan Kasal.
882 libebl: ia64 backend support for register names, return value location
884 libdwfl: Handle truncated linux kernel module section names.
886 libdwfl: Look for linux kernel "vmlinux" files with ".debug" suffix.
888 elflint: Fix checks to permit --hash-style=gnu format.
892 libebl: add function to test for relative relocation
894 elflint: fix and extend DT_RELCOUNT/DT_RELACOUNT checks
896 elflint, readelf: add support for DT_GNU_HASH
897 libelf: add elf_gnu_hash
899 elflint, readelf: add support for 64-bit SysV-style hash tables
901 libdwfl: new functions dwfl_module_getsymtab, dwfl_module_getsym.
905 libelf: bug fixes for rewriting existing files when using mmap.
907 make all installed headers usable in C++ code.
909 readelf: better output format.
911 elflint: fix tests of dynamic section content.
913 ld: Implement --as-needed, --execstack, PT_GNU_STACK. Many small patches.
915 libdw, libdwfl: handle files without aranges info.
921 dwarf.h updated for DWARF 3.0 final specification.
923 libdwfl: New function dwfl_version.
925 The license is now GPL for most files. The libelf, libebl, libdw,
926 and libdwfl libraries have additional exceptions. Add reference to
937 libdwfl: New function dwfl_module_register_names.
939 libebl: New backend hook for register names.
943 libdwfl: New function dwfl_module_return_value_location.
945 libebl: Backend improvements for several CPUs.
949 libdw: New functions dwarf_ranges, dwarf_entrypc, dwarf_diecu,
950 dwarf_entry_breakpoints. Removed Dwarf_Func type and functions
951 dwarf_func_name, dwarf_func_lowpc, dwarf_func_highpc,
952 dwarf_func_entrypc, dwarf_func_die; dwarf_getfuncs callback now uses
953 Dwarf_Die, and dwarf_func_file, dwarf_func_line, dwarf_func_col
954 replaced by dwarf_decl_file, dwarf_decl_line, dwarf_decl_column;
955 dwarf_func_inline, dwarf_func_inline_instances now take Dwarf_Die.
956 Type Dwarf_Loc renamed to Dwarf_Op; dwarf_getloclist,
957 dwarf_addrloclists renamed dwarf_getlocation, dwarf_getlocation_addr.
961 libelf: speed-ups of non-mmap reading.
963 strings: New program.
965 Implement --enable-gcov option for configure.
967 libdw: New function dwarf_getscopes_die.
971 libelf: new function elf_getaroff
973 libdw: Added dwarf_func_die, dwarf_func_inline, dwarf_func_inline_instances.
975 libdwfl: New functions dwfl_report_offline, dwfl_offline_section_address,
976 dwfl_linux_kernel_report_offline.
982 elflint: relax a bit. Allow version definitions for defined symbols against
983 DSO versions also for symbols in nobits sections. Allow .rodata section
984 to have STRINGS and MERGE flag set.
986 strip: add some more compatibility with binutils.
990 elfcmp: some more relaxation.
992 elflint: many more tests, especially regarding to symbol versioning.
994 libelf: Add elfXX_offscn and gelf_offscn.
996 libasm: asm_begin interface changes.
998 libebl: Add three new interfaces to directly access machine, class, and
999 data encoding information.
1001 objdump: New program. Just the beginning.
1005 libdw: now contains all of libdwfl. The latter is not installed anymore.
1007 elfcmp: little usability tweak, name and index of differing section is printed.
1011 libelf: fix a number of problems with elf_update
1013 elfcmp: fix a few bugs. Compare gaps.
1015 Fix a few PLT problems and mudflap build issues.
1017 libebl: Don't expose Ebl structure definition in libebl.h. It's now private.
1021 libebl: Check for matching modules.
1023 elflint: Check that copy relocations only happen for OBJECT or NOTYPE symbols.
1025 elfcmp: New program.
1027 libdwfl: New library.
1031 strip: fix bug introduced in last change
1033 libdw: records returned by dwarf_getsrclines are now sorted by address
1037 readelf: improve DWARF output format
1039 strip: support Linux kernel modules
1043 libdw: Updated dwarf.h from DWARF3 spec
1044 libdw: add new functions dwarf_func_entrypc, dwarf_func_file, dwarf_func_line,
1045 dwarf_func_col, dwarf_getsrc_file
1049 addr2line: New program
1051 libdw: add new functions: dwarf_addrdie, dwarf_macro_*, dwarf_getfuncs,
1054 findtextrel: use dwarf_addrdie
1058 findtextrel: New program.
1062 libdw: Fix using libdw.h with gcc < 4 and C++ code. Compiler bug.
1066 More Makefile and spec file cleanups.
1070 Remove most gettext autoconf handling.
1074 Fix resulting problems. One actual bug found and fixed this way
1078 libebl: Fix x86-64 relocations.
1080 Add -Wunused -Wextra warnings.
1082 Some cleanups resulting from those additional warnings.
1084 Lots of Makefile cleanup.
1088 libelf: add gelf_checksum prototype to <libelf.h>
1090 libelf: fix elf*_checksum handling of NOBITS sections
1092 Finish mudflap support.
1094 Fix three bugs found by mudflap.
1096 ld: add as_needed support
1100 readelf: in section to segment mapping, indicate read-only sections.
1102 elflint: more relaxation for GNU ld
1106 Fix compiling with gcc 4.0.
1107 Some tests called elflint without appropriate LD_LIBRARY_PATH.
1111 Fix support for platforms with lib64.
1115 libebl: add ppc and ppc64 support
1117 readelf: fix minimal memory leak.
1119 Add support to compile with mudflap.
1121 Modernize configure.ac. Move scripts in config subdir.
1123 Modernize *-po directory infrastructure.
1125 libelf: Add gelf_getlib and gelf_update_lib
1127 readelf: print liblist sections
1131 Fix some minimal build problems.
1135 ibdw: tons of new functionality and bug fixes. Several interface changes.
1137 readelf: use libdw now.
1139 libdwarf: removed completely.
1143 configuration changes.
1147 libdw: fix memory handling. Implement source line handling.
1148 nm: use libdw instead of libdwarf.
1149 libelf: change to GPL from OSL1 for now.
1153 libebl: Recognize a few more section types and dynamic tags and return
1154 appropriate strings.
1158 strip: fix overwriting of symbol table in input file.
1162 libebl: Add some ia64 bits.
1166 Bug fixes for big endian and some 64-bit machines.
1170 strip: fix handling of Alpha and s390x which use incorrect hash bucket sizes.
1172 ld: tons of changes, moving towards usability.
1176 strip: update section group symbol index if the associated symbol table changed
1178 libelf: fix two problems with generating output not via mmap
1180 elflint: add probably 10-15 more tests
1181 libebl: add support for some of the new tests
1183 ld: gazillion changes
1187 elflint: deal with .rel.dyn section. Fix a problem with rela platforms.
1188 Handle PT_GNU_STACK. Change to write messages to stdout.
1190 readelf: fix a problem with version information in the symbol table output.
1192 strip: update all version symbol table entries
1198 strip: last changed caused problems when the symbol table is before the
1199 relocation section. Fixed. This fix also improved the asymptotic
1200 behavior if many symbol table sections are present.
1204 Run strip tests with the correct libelf and libebl.
1206 libelf: fix bug in verneed byte order changing code.
1210 strip: Remove unused symbol table entries. This might require updating
1211 various other sections.
1215 Fix some libelf problems with ET_REL files.
1219 More warning changes, mainly by jbj.
1221 libdw: yet more new code. dwarf_child and dwarf_sibling should now actually
1226 libdw: 10+ new functions. get-pubnames2 works now fully. Almost all the
1227 code needed for nm is in place.
1231 cleanups to compile cleanly with gcc 3.3 and -Werror.
1233 libdw: some new code.
1237 libebl: Fix last patch to recognize relocation sections. We must not
1242 libebl: .debug_ranges is a DWARF 3 debug section
1243 libebl: recognize relocation sections for debug section
1244 Patches by Jakub Jelinek.
1248 Cleanups and more SPARC support by Tom Callaway <tcallaway@redhat.com>.
1252 64-bit cleanups for the programs.
1256 libelf: and yet more fun with endian transformation at output time.
1260 libelf: more fun with endian transformation at output time. Add test for it.
1264 libelf: Two little bugs left from previous patch to handle section output
1267 libelf: add unlikely in some more places.
1271 libelf: fix output routines to handle case where section indices and
1272 ordre in the output file don't match correctly. Patch by Jakub.
1274 elflint: fix test of note section content for 64-bit platforms and files
1275 with different byte order.
1279 libebl: Fix SH_ENTSIZE_HASH definition (patch by Jakub)
1283 libelf: correct mistake in error string handling.
1285 libelf: Implement ELF_F_PERMISSIVE.
1286 strip: Implement --permissive option.
1290 strip: Implement -g option.
1292 libelf: Handle broken hash table entry sizes.
1294 libebl: New function ebl_debugscn_p. Use it where appropriate.
1298 libelf: Use correct file size for NOBITS section with ELF_F_LAYOUT set
1302 libelf: Make error handling more robust.
1303 libelf: Use TLS in error handler if configured with --enable-tls
1305 tests: input files are now distributed, not uuencoded in the shell scripts
1307 libdw: implement error handling, dwarf_get_pubnames
1311 Build (incomplete) libdw.
1323 libebl: Handle .gnu.warning.* sections correctly.
1325 size: Implement -t option.
1327 libebl: Add IA-64 support.
1328 libebl: Update SH relocations.
1329 libebl: Add Alpha support.
1330 libebl: Add Arm support.
1331 libebl: Add support for all currently known architecture to the loader.
1335 nm: Implement -S option. Correct portable output format. Implement -s option.
1337 libelf: Take offset of archive into account in elf_rand.
1341 strip: fix handling of ET_REL files.
1342 Add tests for strip.
1346 strip: respect layout of input file
1350 strip: handle files with large number of sections.
1354 libelf: quite a few bug fixes by Alex Larsson.
1356 strip: implement -f option to place stripped sections into a separate
1357 file. By Alex Larsson.
1361 strip: don't let STT_SECTION symbols keeps sections from being removed
1363 elflint: local symbols are allowed in .dynsym
1364 elflint: special case .rel.dyn a bit
1368 elflint: check types and flags of special sections defined in gABI
1370 libebl: add x86-64 support
1374 Start improvement of debug info handling in nm.
1376 libasm: implement asm_adduleb128 and asm_addsleb128 and a test for them
1380 Fix build on 64-bit platforms.
1384 nm: print file/line number also for local symbols
1386 use versions scripts not libtool's useless -export-symbols option
1390 Update to autoconf 2.54 and automake 1.7.
1392 elflint: check note sections
1394 libdwarf: a number of bug fixes
1396 readelf: print .debug_info section content
1398 dwarf.h: Update from draft 7
1404 libelf: new function to read parts of the ELF file
1406 libebl: support for note section handling
1408 readelf: dump note sections
1412 libelf: fix little new section-handling related bugs in elf_getshstrndx
1415 elflint: tests for mandatory content of dynamic section
1417 libasm: better handling of absolute symbols
1421 libasm: rewrite to store Elf_Scn* instead of indices
1423 nm: finish many-section support
1425 nm: use debug in to print file/line info in sysv format
1427 libdwarf: fix a few bugs in DIE handling
1431 libelf: major rewrite to keep Elf_Scn references valid until elf_end
1435 libasm: Add support for bss, ABS, and COM sections.
1437 libebl: ebl_section_name takes now two index arguments to distinguish
1438 between special sections and extended sections
1442 General: fix a few problem gcc 3.1 had with the code.
1444 libelf: implement {gelf,elf32,elf64}_checksum
1446 libelf: optimize DSO: fewer relocations, fewer PLTs
1450 ld: use correct section header string table index; write correct index
1452 add dependencies for *.sym files
1456 libelf: add elf_getshnum and elf_getshstrndx
1458 libebl: update section type name function
1460 elflint: tons of fixes wrt large number of sections. New tests in this area.
1461 Same amount of other bug fixes.
1463 size, strip, nm: better support for large number of sections. Including
1464 using correct section header string table
1466 libasm: correctly create data structures for large number of sections
1468 new tests asm-tst4 and asm-tst5 to check large number of sections
1470 libasm: implement section group generation
1472 elflint: more tests on section groups. Improve performance on existing
1477 ld: add undefined symbols to dynamic symbol table if --export-dynamic is
1480 ld: fix value of e_entry
1484 elflint: print section names in error messages
1486 elflint: mustn't warn about multiple DT_NULL
1488 ld: don't emit all symbols if --export-dynamic is not given
1490 ld: correct compute symbol address in output file (section index was off by 1)
1492 ld: generate correct version info in dynsym without --export-dynamic and
1497 Fix check of various e_*size entries in elflint.
1499 Handle text output in asm_newsym.
1501 Finish checks in asm-tst3.
1505 Update to autoconf 2.53, automake 1.6, gettext 0.11+.
1507 Introduce *.sym files to restrict export from DSOs.
1509 Use attribute_hidden and internal_function to optimize DSO code.
1511 Add TLS definitions in elf.h and handle them in readelf.
1513 Fix bug in verdef section generation in ld.
1515 Add initial libasm code.
1519 Implement better hash size optimization heuristic in ld. It uses a formula
1520 taking number of tests into account.
1522 Lots of small bug fixes.
1524 Improve readelf output format. Respect various sh_link/sh_info values.
1525 Correctly print versioning information for symbol tables.
1529 Implement preprocessing of linker script. Recognize -z combreloc.
1533 Implement -z ignore|record for ld.
1535 Implement creating of .gnu.version_r and .gnu.version sections. The
1536 .gnu.version does not yet contain correct info for defined and versioned
1537 symbols (means .gnu.version_d is not yet implemented).
1539 Implement gelf_update_* functions to create versioning data.
1543 Add DT_RUNPATH/DT_RPATH entries to dynamic section. Create .plt and
1544 .rel.plt sections (completely). Add support for all four PLT related
1545 dynamic section entries. Add callback function for PLT creation.
1547 More tests in elflint. Add support for very strict checking which for
1548 now flags level 2 (deprecated features) usage.
1552 Create dynamic symbol table, dynamic string table, and hash table to ld.
1554 Add hash table histogram support to readelf.
1558 more work on elflint
1560 ld now creates the dynamic section and references it. Start adding entries
1565 Start implementing elflint.
1569 Fix handling of NOBITS sections in elf_getdata.
1571 Start implementing generation of executables and DSOs in ld.
1572 Generation of program header mostly done. Address computation done.
1573 Extension of linker script syntax.
1577 Implement section group handling in readelf.
1581 Implement section groups. This involved a lot of code moving. The
1582 new code is entirely untested since gas/gcc are currently not able to
1583 create section groups. ld works fine on files without section groups.
1587 Fix problem with adding more section in elf_newscn. The section pointers
1588 for the data buffers wasn't adjusted.
1590 Fix elf_getdata with nonzero second parameter. Correctly handle creation
1591 of internal data buffer for machines without unaligned access.
1595 Start adding support to selectively add sections. Includes support for
1597 Add --gc-sections/--no-gc-sections options.
1598 Add general section merging support.
1600 Fix a bug in section group support in strip.
1602 Fix some potential problems with hash value in dynamic hash implementation.
1606 section merging works in ld.
1610 Actually create data structures from version map file and use it to hide
1613 Implement -s -s for ld.
1617 Improve relocation table output in readelf. Avoid some crashes.
1618 Finish many section handling in readelf.
1620 Finish: finish implementation of ld -r. At least some simple tests pass.
1624 Fix a number of errors in ELF_C_WRITE handling.
1626 Almost finished implementation of ld -r. The data sections are all copied.
1627 Handling of symbol tables is missing.
1631 Handle DSO and archive input files correctly if -r option is given.
1633 Gracefully deal with no phdr in new file in libelf.
1634 Fix various small error handling problems.
1635 Don't mmap file for output unless the command says so.
1637 Add code to create ELF section header table to ld finalize routines.
1641 Fix some problems with recursive handling of archives in libelf.
1643 Improve messages printed by nm.
1645 Add symbol binding name handling to libebl. Fix section name handling in
1648 readelf and nm use more libebl functions.
1650 Handle XINDEX correctly in nm and string.
1652 Add first machine ld backend library (i386).
1653 Use it. Recognize -r and --shared. Avoid using -lxxx parameters for -r.
1654 Create ELF header in output file. Change mode of output file according to
1655 output file type. Reorganize callback initialization in ld.
1659 Fix some memory leaks in libelf.
1663 Implement reading version script. Both inside linker scripts and via the
1664 --version-script command line parameter. Uses the same code.
1665 What remains to be done is to implement a data structure which allows
1666 efficient matching against the version names to decide which pattern
1669 Beginning of output generation and output writing functions.
1673 Finish implementation for DSO input file handling. Implement rpath, runpath,
1674 and LD_LIBRARY_PATH handling.
1678 make handling of e_shnum overflow in libelf standard conforming
1680 ld now actually can handle DSOs in linker scripts. Handling of DT_RUNPATH,
1681 DT_RPATH, -rpath, -rpath-link still remains to be implemented.
1683 fix handling of -L parameters. Make actual use of the default_paths element.
1685 make re-definition of symbols in and from DSO compatible with existing linker
1689 more work on assigning input sections to output sections.
1691 Add gelf_xlatetof and gelf_xlatetom which were accidentally left out.
1693 Fix memory handling of section headers.
1697 Add many-section support to ld. Add various new command line parameters.
1698 Allow pagesize to be specified in linker script or on the command line.
1699 Collect input sections in list for the output section according to the rules
1700 specified in the linker script.
1704 Fix some problems in the internal list handling which had the result
1705 that we didn't look for some of the unresolved symbols.
1707 Free some memory if we know we don't need it anymore.
1709 Optimize the list of unresolved symbols. Throw out symbols which are
1714 Got file reading correct now. The files are all read while parsing
1715 the parameters. No creating of data structures to describe the linker
1716 command line. The symbol table is built up while reading the files.
1717 DSOs are handled now. -( -) handling is optimized.
1721 Linker read linker scripts everywhere. Handles --whole-archive. Recognizes
1722 --dynamic and --static. Collects defined and undefined symbols. Recognizes
1725 libebl now defines functions to call the callbacks. Add generic name handling
1726 in these new functions. Remove the code from readelf and call the new
1731 Start of linker. Basic argument parsing, finding of input files,
1732 linker script reading.
1736 Implement dwarf_get_fde_n(), dwarf_get_abbrev(), dwarf_get_abbrev_tag(),
1737 dwarf_get_abbrev_code(), dwarf_get_abbrev_children_flag(),
1738 dwarf_get_abbrev_entry(), dwarf_get_fde_at_pc(), and tests for it.
1742 Implement dwarf_get_fde_list_eh(), dwarf_get_cie_of_fde(),
1743 dwarf_get_fde_range(), dwarf_get_cie_info(), dwarf_get_fde_instr_bytes(),
1748 Make handling of binaries in other byte order work and add tests for it.
1752 Implement dwarf_get_aranges(), dwarf_get_arange(), dwarf_get_cu_die_offset(),
1753 dwarf_get_arange_info(), and tests for them.
1757 Implement dwarf_get_global(), dwarf_globname(), dwarf_global_die_offset(),
1758 dwarf_global_cu_offset(), dwarf_global_name_offsets(), and tests for them
1762 Implemented dwarf_srclines(), dwarf_srcfiles(), dwarf_linebeginstatement(),
1763 dwarf_lineendsequence(), dwarf_lineno(), dwarf_lineaddr(), dwarf_lineoff(),
1764 dwarf_linesrc(), dwarf_lineblock(), dwarf_lineprologueend(),
1765 dwarf_lineepiloguebegin(), and tests for them.
1769 Implemented dwarf_loclist().
1773 Implemented dwarf_dieoffset(), dwarf_die_CU_offset(), dwarf_diename() and
1776 Implemented dwarf_attrlist(), dwarf_hasattr(), dwarf_attr(), dwarf_lowpc(),
1777 dwarf_highpc(), dwarf_bytesize(), dwarf_bitsize(), dwarf_bitoffset(),
1778 dwarf_srclang(), dwarf_arrayorder(), dwarf_hasform(), dwarf_whatform(),
1779 dwarf_whatattr(), dwarf_formref(), dwarf_global_formref(), dwarf_formaddr(),
1780 dwarf_formflag(), dwarf_formudata(), dwarf_formsdata(), dwarf_formblock,
1781 dwarf_formstring() and tests for them.
1785 Implemented dwarf_offdie()), dwarf_tag(), dwarf_dieoffset(),
1786 dwarf_die_CU_offset(), dwarf_diename() and tests for them.
1790 First libdwarf functions work.
1794 libelf and parts of libebl are done.