Update ELF Tool Chain to upstream r3769

This contains many small bugfixes and documentation improvements.

Sponsored by: The FreeBSD Foundation

MFHead @348740

Sponsored by: The FreeBSD Foundation

libelf: Use a red-black tree to manage the section list.

The tree is indexed by section number. This speeds up elf_getscn()
and its callers, which previously had to traverse a linked list. In
parti

libelf: Use a red-black tree to manage the section list.

The tree is indexed by section number. This speeds up elf_getscn()
and its callers, which previously had to traverse a linked list. In
particular, since .shstrtab is often the last section in a file,
elf_strptr() would have to traverse the entire list.

PR: 234949
Reviewed by: emaste
MFC after: 2 weeks
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D20443

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Update to ELF Tool Chain r3668

Highlights:
- Make sure that only TLS sections are sorted into TLS segment.
- Fixed multiple errors in "Section to Segment mapping".
- Man page updates
- ar improvemen

Update to ELF Tool Chain r3668

Highlights:
- Make sure that only TLS sections are sorted into TLS segment.
- Fixed multiple errors in "Section to Segment mapping".
- Man page updates
- ar improvements
- elfcopy: avoid filter_reloc uninitialized variable for rela
- elfcopy: avoid stripping relocations from static binaries
- readelf: avoid printing directory in front of absolute path
- readelf: add NT_FREEBSD_FEATURE_CTL FreeBSD note type
- test improvements

NOTES:

Some of these changes originated in FreeBSD and simply reduce diffs
between contrib and vendor.

ELF Tool Chain ar is not (currently) used in FreeBSD, and there are
improvements in both FreeBSD and ELF Tool Chain ar that are not in
the other.

Sponsored by: The FreeBSD Foundation

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MFH @ r337607, in preparation for boarding

Merge ^/head r336870 through r337285, and resolve conflicts.

libelf: reload section headers after update with ELF_C_WRITE

These issues (PR 218860 and PR 218861) are still undergoing additional
discussion in the upstream context and there may be additional cha

libelf: reload section headers after update with ELF_C_WRITE

These issues (PR 218860 and PR 218861) are still undergoing additional
discussion in the upstream context and there may be additional changes
to come.

PR: 218860
Submitted by: Eric McCorkle
MFC after: 1 week
Differential Revision: https://reviews.freebsd.org/D10486

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libelf: add an assert that msz is non-zero

Reported by: Coverity
CID: 976023

Catch up with HEAD (r280229-r284686).

MFH: r282615-r283655

Sponsored by: The FreeBSD Foundation

Merge sync of head

Update to ELF Tool Chain r3197

Highlights:
- Fix man page markup, whitespace, and typos
- Fix sh_info of SHT_GROUP section to point to the correct string
- Improve validation in readelf and elfco

Update to ELF Tool Chain r3197

Highlights:
- Fix man page markup, whitespace, and typos
- Fix sh_info of SHT_GROUP section to point to the correct string
- Improve validation in readelf and elfcopy/strip
- Handle DWARF 4's DW_AT_high_pc in addr2line

Sponsored by: The FreeBSD Foundation

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Reintegrate head: r274132-r277384

Sponsored by: The FreeBSD Foundation

Reintegrate head revisions r273096-r277147

Sponsored by: The FreeBSD Foundation

MFhead @ r276594

Merge ^/head r274961 through r276418.

Update elftoolchain to upstream rev 3130

This includes a number of libdwarf improvements (particularly DWARF4
related) and updates to elftoolchain tools such as strip(1). It also
includes a large nu

Update elftoolchain to upstream rev 3130

This includes a number of libdwarf improvements (particularly DWARF4
related) and updates to elftoolchain tools such as strip(1). It also
includes a large number of miscellaneous fixes (memory leaks, sign and
cast warnings, integer overflow and underflow, etc.).

This is a merge of r276167,276170-276172 from the
projects/elftoolchain-update-r3130 branch.

Sponsored by: The FreeBSD Foundation

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Update elftoolchain to upstream rev 3130

This brings a number of fixes to elfcopy/strip and DWARF4 improvements.

Sponsored by: The FreeBSD Foundation

MFC @ r266724

An SVM update will follow this.

Merge head

IFC @264767

MFH: tracking commit

Sponsored by: The FreeBSD Foundation

Merge head up to r262222 (last merge was incomplete).

Merge from projects/elftoolchain: Upgrade libelf and libdwarf to newer
versions from elftoolchain upstream (r2974). Convert ctfconvert to
use the APIs from the new libdwarf and make ctfconvert work

Merge from projects/elftoolchain: Upgrade libelf and libdwarf to newer
versions from elftoolchain upstream (r2974). Convert ctfconvert to
use the APIs from the new libdwarf and make ctfconvert work with Clang
3.4.

__FreeBSD_version is bumped to 1100006.

A list of notable changes:

[libelf]

* The old libelf source code in lib/libelf has been removed.
Instead, the new libelf is built from contrib/elftoolchain/libelf.
* Manual pages are largely improved.
* Internal implementation was refactored and improved for better
correctness and portability.
* Fixed a few memory leaks.
* Extended with extension APIs `elf_open()` and `elf_openmemory()`.
These APIs are similar to `elf_begin()` and `elf_memory()`
respectively, except that they return an ELF descriptor of kind
`ELF_K_NONE` instead of an error if the object being opened could
not be parsed.
* Implement support for translating sections of type ELF_T_VDEF and
ELF_T_VNEED.
* Improve `elf_update()` to check that the executable header, the
program header table, section contents and the section header table
do not overlap, and to ensure that gaps between extents are
filled with the fill character specified by `elf_fill()`.
* Allow `Elf_Data` descriptors to have types and alignments differing
from their containing section.
* Remove functionality controlled by `LIBELF_TEST_HOOKS`.
* Support processing of BSD-flavor archives.
* Add knowledge of section types `SHT_GNU_ATTRIBUTES` and
`SHT_GNU_LIBLIST`.
* Use elftoolchain style symbol versioning.
* Shared library version is bumped.

[libdwarf]

* The old libdwarf source code in lib/libdwarf has been removed.
Instead, the new libdwarf is built from contrib/elftoolchain/libdwarf.
* Support full DWARF3 and partial DWARF4 parsing.
* Support DWARF2 generation.
* Support for DWARF line number, call frame, location expression,
macro info and address ranges, among other things.
* The APIs for the new libdwarf are mostly compatible with the widely
used LGPL libdwarf. Some of the incompatible APIs from the old
libdwarf are kept as its own extensions. All the APIs are documented.
* Use elftoolchain style symbol versioning.
* Shared library version is bumped.

[ctfconvert]

* Switch to the APIs from the new libdwarf.
* Improve die_mem_offset() so that DW_AT_data_member_location attributes
generated by Clang 3.4 can be handled properly.
* Make use of DW_AT_byte_size attribute of the member DIE to calculate
the bits occupied by the member's type, without actually resolving
the type. This way ctfconvert can deal with the case that Clang 3.4
sometimes emits DIE for struct/union member before emitting the DIE
for the type of that member.

Obtained from: elftoolchain
No objection: -toolchain mailing list

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Copy libelf, libdwarf and common files from vendor/ to contrib/.