[PATCH 0/6] Use PTRACE_GETREGSET and PTRACE_SETREGSET in arm-linux-nat.c

[Yao Qi <qiyaoltc at gmail dot com>]

This patch series is to let GDB arm-linux-nat.c use ptrace commands
PTRACE_GETREGSET and PTRACE_SETREGSET if linux kernel supports.

Patch #1 and #2 are factoring out macros and variables into more
common files.  Patch #3 checks whether PTRACE_GETREGSET is supported by
linux kernel.  Patch #4 - #6 use PTRACE_{G,S}ETREGSET ptrace commands
to fetch and store general purpose registers, FP registers and VFP
registers.

The whole test series are tested on x86_64-linux and arm-linux (with
PTRACE_GETREGSET and without PTRACE_GETREGSET kernel support respectively).

After these patches, arm-linux-nat.c is similar to aarch64-linux-nat.c
in the aspect of fetching and storing registers.  It paves the way for
multi-arch support in aarch64 gdb (aarch64 gdb can do native debugging
for arm program), which is the motivation of this patch series.

*** BLURB HERE ***

Yao Qi (6):
  Move PTRACE_GETREGSET and PTRACE_SETREGSET to nat/linux-ptrace.h
  Move have_ptrace_getregset to linux-nat.c
  Check whether kernel supports PTRACE_GETREGSET
  Fetch and store GP registers by PTRACE_{G,S}ETREGSET
  Fetch and store FP registers by PTRACE_{G,S}ETREGSET
  Fetch and store VFP registers by PTRACE_{G,S}ETREGSET

 gdb/amd64-linux-nat.c          |   1 +
 gdb/arm-linux-nat.c            | 211 +++++++++++++++++++++++++++++++++++++----
 gdb/gdbserver/linux-s390-low.c |   8 --
 gdb/gdbserver/linux-x86-low.c  |   9 --
 gdb/i386-linux-nat.c           |   1 +
 gdb/linux-nat.c                |   3 +
 gdb/linux-nat.h                |   3 +
 gdb/nat/linux-ptrace.h         |   8 ++
 gdb/s390-linux-nat.c           |   9 +-
 gdb/x86-linux-nat.c            |   3 +-
 gdb/x86-linux-nat.h            |  10 --
 11 files changed, 212 insertions(+), 54 deletions(-)

-- 
1.9.1