Update ELF Tool Chain to upstream r3769

This contains many small bugfixes and documentation improvements.

Sponsored by: The FreeBSD Foundation

Merge ^/head r352764 through r353315.

Capsicumize nm(1).

Reviewed by: emaste
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D21107

nm: Adjust argc and argv in get_opt().

This refactoring makes it slightly easier to capsicumize nm(1).

Discussed with: emaste
MFC after: 1 week
Sponsored by: The FreeBSD Foundation

Update ELF Tool Chain to upstream r3769

This contains many small bugfixes and documentation improvements.

Sponsored by: The FreeBSD Foundation

Merge ^/head r352764 through r353315.

Capsicumize nm(1).

Reviewed by: emaste
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D21107

nm: Adjust argc and argv in get_opt().

This refactoring makes it slightly easier to capsicumize nm(1).

Discussed with: emaste
MFC after: 1 week
Sponsored by: The FreeBSD Foundation

elftoolchain nm(1): Initialize allocated memory before use

In out of memory scenarios (where one of these allocations failed but
other(s) did not), nm(1) could reference the uninitialized value of t

elftoolchain nm(1): Initialize allocated memory before use

In out of memory scenarios (where one of these allocations failed but
other(s) did not), nm(1) could reference the uninitialized value of these
allocations (undefined behavior).

Always initialize any successful allocations as the most expedient
resolution of the issue. However, I would encourage upstream elftoolchain
contributors to clean up the error path to just abort immediately, rather
than proceeding sloppily when one allocation fails.

Reported by: Coverity
Sponsored by: Dell EMC Isilon

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Merge ^/head r316992 through r317215.

Update ELF Tool Chain to upstream r3520

Highlights of changes between r3490 and r3520:

- Improve C++ demangling
- Improve compatibility with Binutils tools wrt. error messages
- Handle additional t

Update ELF Tool Chain to upstream r3520

Highlights of changes between r3490 and r3520:

- Improve C++ demangling
- Improve compatibility with Binutils tools wrt. error messages
- Handle additional types/sections/etc. in readelf and elfdump
- addr2line, cxxfilt: use setvbuf to set line buffering for filter use

PR: 218395
MFC after: 2 weeks
Relnotes: Yes
Sponsored by: The FreeBSD Foundation

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Update to ELF Tool Chain r3475

Improvements include:

* Add support for reporting and handling a number of new constants in
various tools, including:
* CloudABI OSABI
* DT_TLSDESC_*

Update to ELF Tool Chain r3475

Improvements include:

* Add support for reporting and handling a number of new constants in
various tools, including:
* CloudABI OSABI
* DT_TLSDESC_*
* i386, MIPS, SPARC and amd64 relocations

* C++ demangler bug fixes

* Man page updates

* Improved input validation in several tools

This update also reduces diffs against upstream as a number of fixes
included in upstream were previously cherry-picked into FreeBSD.

Sponsored by: The FreeBSD Foundation

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Catch up with HEAD (r280229-r284686).

Merge sync of head

MFH: r280643-r281852

Sponsored by: The FreeBSD Foundation

Merge from HEAD

Update elftoolchain to upstream revision 3179

Some notable changes:
- libdwarf: Fixed DWARF4 line section
- elfcopy: Implement --localize-hidden
- nm: handle object name referenced by DW_AT_specific

Update elftoolchain to upstream revision 3179

Some notable changes:
- libdwarf: Fixed DWARF4 line section
- elfcopy: Implement --localize-hidden
- nm: handle object name referenced by DW_AT_specification
- elfcopy: Add --strip-dwo and --extract-dwo options for split DWARF
- readelf: add remaining arm64 dynamic relocation names
- nm: Avoid integer overflow in value comparison

Relnotes: Yes
Sponsored by: The FreeBSD Foundation

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MFH: r278968-r280640

Sponsored by: The FreeBSD Foundation

Merge from head

Merge r278538 through r279514.

Merge ^/head r279163 through r279308.

nm: avoid crash in print_lineno if func->name is NULL

This can occur when DW_AT_specification is used to refer to another DIE
that provides the actual DW_AT_name string. For example:

< 3><0x0000008

nm: avoid crash in print_lineno if func->name is NULL

This can occur when DW_AT_specification is used to refer to another DIE
that provides the actual DW_AT_name string. For example:

< 3><0x00000086> DW_TAG_subprogram
DW_AT_name PrettyStackTraceEntry
...
< 1><0x00002cf4> DW_TAG_subprogram
DW_AT_specification <0x00000086>

We will need to add support for DW_AT_specification, but in the interim
we should not segfault.

Obtained from: Elftoolchain (r3170)
Sponsored by: The FreeBSD Foundation

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MFH: r278593-r278966

Sponsored by: The FreeBSD Foundation

Merge ^/head r278756 through r278915.

Update elftoolchain to upstream revision 3163

Most of our changes have now been committed upstream, so this change is
largely bookkeeping.

Sponsored by: The FreeBSD Foundation