platform_external_elfutils, branch upstream-master

readelf: Support showing view pairs in loclists as GNU extension.

2020-10-02T21:32:49+00:00

View pairs are encoded in .debug_loclists as they are encoded in
.debug_locs sections by the GCC compiler. Scan for DW_AT_GNU_locviews
attributes that point to the view pairs just in front of the actual
location lists.

Signed-off-by: Mark Wielaard

libdwfl: Add ZSTD support.

2020-09-21T13:17:00+00:00

Newer kernels might be compressed using ZSTD add support to libdwfl open
so we can can automatically read ZSTD compressed files and kernel images.

The support is very similar to the bzip2 and lzma support, but slightly
different. With a bit more macros it could maybe have used the gzip.c
USE_INFLATE code path. But I felt that the many macros didn't really help
understand the code. So the unzip routine has a slightly different code
path for ZSTD.

https://sourceware.org/bugzilla/show_bug.cgi?id=26632

Signed-off-by: Mark Wielaard

debuginfod: store only canonicalized sref pathnames in database

2020-09-18T17:13:02+00:00

Since PR25548, we let debuginfod answer /buildid/HEX/source/PATH
queries with both canonicalized and raw PATHs.  It canonicalizes
incoming paths, but still stored the raw paths in the database too.
This near-dupe storage is not needed, since the queries would always
find the canonicalized version too, so stop doing that.  This saves
database space/time.

Signed-off-by: Frank Ch. Eigler

debuginfod: Fix BUILD_STATIC build.

2020-09-17T21:05:26+00:00

The BUILD_STATIC build, as used by the coverage setup, was broken for
debuginfod because the DUMMY_LIBDEBUGINFOD case was mixed up. It should
include libcurl_LIBS when NOT doing a dummy build.

Signed-off-by: Mark Wielaard

debuginfod-find.c: Fix license block comment. File is GPLv3+ only.

2020-09-16T14:55:16+00:00

The license itself was correct, just the comment to get a copy of
the LGPL was wrong.

Signed-off-by: Mark Wielaard

debuginfod-find: Support compressed (kernel) ELF images.

2020-09-15T13:43:10+00:00

By using dwelf_elf_begin instead of elf_begin we automatically get
support for determining the build-id of compressed (kernel) images.

https://sourceware.org/bugzilla/show_bug.cgi?id=26599

Signed-off-by: Mark Wielaard

Prepare for 0.181

2020-09-08T10:56:07+00:00

Set version to 0.181.
Update NEWS and elfutils.spec.in.
Regenerate po/*.po files.

Signed-off-by: Mark Wielaard

libdw,readelf: Recognize DW_CFA_AARCH64_negate_ra_state

2020-09-07T10:21:10+00:00

DW_CFA_AARCH64_negate_ra_state is used on aarch64 to indicate whether
or not the return address is mangled or not. This has the same value
as the DW_CFA_GNU_window_save. So we have to pass around the e_machine
value of the process or core we are inspecting to know which one to
use.

Note that it isn't actually implemented yet. It needs ARMv8.3 hardware.
If we don't have such hardware it is enough to simply ignore the
DW_CFA_AARCH64_negate_ra_state (and not confuse it with
DW_CFA_GNU_window_save) to get backtraces to work on aarch64.

Add a testcase for eu-readelf --debug-dump=frames to show the value
is correctly recognized. Also don't warn we cannot find any DWARF
if we are just dumping frames (those will come from .eh_frame if
there is no .debug_frame).

Signed-off-by: Mark Wielaard

libebl: Handle aarch64 bti, pac bits in gnu property note

2020-09-07T09:23:54+00:00

When building with gcc -mbranch-protection= we might get a gnu property
note indicating BTI (Branch Target Identification) and/or PAC (Pointer
Authentication Code) is being used.

Add a small testcase to show eu-readelf -n now properly lists those
bits in the gnu property note.

Signed-off-by: Mark Wielaard

readelf: base address entry can be first

2020-09-07T08:07:45+00:00

In both debug_ranges and debug_loc a base address entry can be the
first in the range or loc list. If so print the offset and set first
to false. Otherwise don't print the entry list offset, but do set
first to false.

Signed-off-by: Mark Wielaard