Copy head (r256279) to stable/10 as part of the 10.0-RELEASE cycle.

Approved by: re (implicit)
Sponsored by: The FreeBSD Foundation

Include die tag in error message

Handle DW_TAG_unspecified_type

2011-11-14 Jim Ingham <jingham@apple.com>

* dwarf2read.c (read_type_die): Handle DW_TAG_unspecified_type.
(read_tag_unspecified_type): New function, add a type for the
DW_TAG_unspecified_type die.

Obtained from: Apple, gdb-1752

Handle DW_TAG_rvalue_reference_type

2012-05-21 Jim Ingham <jingham@apple.com>

* dwarf2read.c (process_die): Handle DW_TAG_rvalue_reference_type.
(read_type_die): Ditto.
(dwarf_tag_name): Ditto.

* elf/dwarf2.h: Add DW_TAG_rvalue_reference_type.

Obtained from: Apple, gdb-1820

Support restrict qualifier in dwarf debug info

Newer clang/llvm emit DW_TAG_restrict_type, which wasn't handled by gdb.
Import support from Apple's gdb-1822:

| 2009-03-24 Jason Molenda (jmolenda@apple.com)
|
| * gdbtypes.c (make_cv_type): Rename this function to make_cvr_type to
| also handle restrict qualifiers.
| (check_typedef): Handle TYPE_RESTRICT.
| * gdbtypes.h (TYPE_FLAG_RESTRICT, TYPE_RESTRICT): New.
| * hpread.c (hpread_type_lookup): Update to use make_cvr_type.
| * stabsread.c (read_type): Pass the restrict qualifiers along.
| * parse.c (follow_types): Pass the restrict qualifiers along.
| * dwarf2read.c (read_tag_const_type): Call make_cvr_type.
| (read_tag_volatile_type): Same.
| (read_tag_restrict_type): New function.
| (read_type_die): Handle DW_TAG_restrict_type.

Obtained from: Apple
Sponsored by: ADARA Networks

Teach gdb about the DW_FORM_flag_present dwarf attribute, so it doesn't
error out on files that contain it. (This attribute can be emitted by
newer versions of clang.)

MFC after: 2 weeks

Merge binutils 2.17.50 to head. This brings a number of improvements to
x86 CPU support, better support for powerpc64, some new directives, and
many other things. Bump __FreeBSD_version, and add a note to UPDATING.

Thanks to the many people that have helped to test this.

Obtained from: projects/binutils-2.17

Fix reading of .debug_line on MIPS64, big-endian:
read_initial_length detects pointer size by checking first
4 bytes of .debug_line and stores it in struct comp_unit_head *
passed to it as second argument. By passing NULL to a
read_initial_length we ignore actual pointer size (8 bytes) and
use default (4 bytes) which results in wrong offsets of header fields.

This commit was generated by cvs2svn to compensate for changes in r130803,
which included commits to RCS files with non-trunk default branches.

Import of GDB version 6.1.1 (stripped; see FREEBSD-Xlist rev. 1.6).

Vendor import of GDB 5.2.
These bits are taken from the FSF gdb_5_2-branch anoncvs repo
on 27-June-2002 12:01:00 EDT.

Virgin import of gdb-4.18