[PATCH 0/2 V2] Support single step by arch or target

[Yao Qi <qiyaoltc@gmail.com>]

This is the V2 of my patch <https://sourceware.org/ml/gdb-patches/2015-07/msg00040.html>
to address Pedro's comment on backward compatibility problem.

Patch 1 is to rename target_ops hook supports_conditional_breakpoints
to supports_hardware_single_step, nothing changes since I post it last
time <https://sourceware.org/ml/gdb-patches/2015-07/msg00035.html>.

Patch 2 is the major one in this series, details can be found in it.

Regression tested on aarch64 with {native, gdbserver} x {32-bit, 64-bit}.

*** BLURB HERE ***

Yao Qi (2):
  [gdbserver] Rename supports_conditional_breakpoints to
    supports_hardware_single_step
  Support single step by arch or target

 gdb/aarch64-linux-nat.c   |  9 ++++++++
 gdb/arm-linux-tdep.c      |  5 ++++
 gdb/doc/gdb.texinfo       |  8 +++++++
 gdb/gdbserver/linux-low.c | 11 +++------
 gdb/gdbserver/lynx-low.c  |  5 +---
 gdb/gdbserver/nto-low.c   |  5 +---
 gdb/gdbserver/server.c    | 35 ++++++++++++++++++++++++----
 gdb/gdbserver/spu-low.c   |  2 +-
 gdb/gdbserver/target.c    |  8 +++++++
 gdb/gdbserver/target.h    | 13 ++++++-----
 gdb/gdbserver/win32-low.c |  5 +---
 gdb/remote.c              | 58 +++++++++++++++++++++++++++++++++++++++--------
 gdb/target-delegates.c    | 31 +++++++++++++++++++++++++
 gdb/target.h              |  9 ++++++++
 14 files changed, 164 insertions(+), 40 deletions(-)

-- 
1.9.1