[PATCH v3 0/3] gdbserver: Fix support for S390 TDB

[Andreas Arnez <arnez@linux.vnet.ibm.com>]

This is a follow-up to patch 2 of the series called "S390: Fixes for
gdbserver on targets with TDB".  The last version of that patch was
here:

  https://sourceware.org/ml/gdb-patches/2014-12/msg00021.html

This new version is split up in three patches and contains the following
changes:

* Invalidate the register cache whenever we are about to fetch the
  register values from the inferior.

* Instead of passing NULL to the regset store function upon ENODATA from
  ptrace, just suppress its invocation, since the registers are now
  "unavailable" by default.  Consequently no longer handle NULL in
  s390_store_tdb or arm_store_wmmxregset.

* Suppress calling the register store function upon other errors from
  ptrace as well.

* Rephrase the while()-loops as for()-loops in regsets_fetch_- and
  -_store_inferior_registers, for improved readability.

Tested on S390 and i386.

Andreas Arnez (3):
  gdbserver: Rephrase loops in regsets_fetch/store_inferior_registers
  gdbserver: Prevent stale/random values in register cache
  S390: Fix gdbserver support for TDB

 gdb/gdbserver/linux-low.c      |   38 +++++++++++++-------------------------
 gdb/gdbserver/linux-s390-low.c |   31 +++++++++++++++++++++----------
 gdb/gdbserver/regcache.c       |    5 +++++
 3 files changed, 39 insertions(+), 35 deletions(-)

-- 
1.7.9.5