src/lib/libthread_db/arch, branch upstream/11.1.0

MFC r315900,r315973,r315974:

2017-04-16T07:33:47+00:00

  r315900:
    Cleanup structures related to VFP and/or mcontext_t.  - in mcontext_t,
    rename newer used 'union __vfp' to equaly sized 'mc_spare'.
      Space allocated by 'union __vfp' is too small and cannot hold full VFP
      context.
    - move structures defined in fp.h to more appropriate headers.  - remove
    all unused VFP structures.
  r315973:
    Save VFP state on fork().  Update the copy of VFP state in PCB before it is
    cloned for new process.
  r315974:
    Preserve VFP state across signal delivery.

Add the RISC-V MD parts of libthread_db.

2016-01-27T10:34:07+00:00

Sponsored by:	DARPA, AFRL
Sponsored by:	HEIF5
Differential Revision:	https://reviews.freebsd.org/D5064

Add the arm64 parts of libthread_db.

2015-04-01T08:37:50+00:00

Differential Revision:	https://reviews.freebsd.org/D2184
Reviewed by:	imp
Sponsored by:	The FreeBSD Foundation

Constify a struct savexmm pointer in pt_ucontext_to_fpreg(), to silence

2015-01-27T18:56:46+00:00

a -Wcast-qual warning from clang 3.6.0.

Remove ia64.

2014-07-07T00:27:09+00:00

This includes:
o   All directories named *ia64*
o   All files named *ia64*
o   All ia64-specific code guarded by __ia64__
o   All ia64-specific makefile logic
o   Mention of ia64 in comments and documentation

This excludes:
o   Everything under contrib/
o   Everything under crypto/
o   sys/xen/interface
o   sys/sys/elf_common.h

Discussed at: BSDcan

Ensure we set all fpu registers to zero by using the address and size of

2013-08-17T14:42:40+00:00

the union over one of its members.

Prefix the alias macros for members of struct __mcontext with an underscore

2013-07-12T14:24:52+00:00

in order to avoid a clash in the net80211 code.

Implement

2011-08-06T17:50:37+00:00

Reviewed by:	marcel
Approved by:	re (kib)
MFC after:	1 week

Use the size of struct fpreg rather than of the pointer to it when copying

2011-08-06T17:49:21+00:00

the FPU state.

Reviewed by:	marcel
Approved by:	re (kib)
MFC after:	1 week

Repair some build breakage introduced in r211725 and garbage collect some

2010-08-28T15:03:11+00:00

code made obsolete in the same commit.