nat: Split out platform-independent aarch64 debug register support.

Move non-Linux-specific support for hardware break/watchpoints from
nat/aarch64-linux-hw-point.c to nat/aarch64-hw-point.c.  Changes
beyond a simple split of the code are:

- aarch64_linux_region_ok_for_watchpoint and
  aarch64_linux_any_set_debug_regs_state renamed to drop linux_ as
  they are not platform specific.

- Platforms must implement the aarch64_notify_debug_reg_change
  function which is invoked from the platform-independent code when a
  debug register changes for a given debug register state.  This does
  not use the indirection of a 'low' structure as is done for x86.

- The handling for kernel_supports_any_contiguous_range is not
  pristine.  For non-Linux it is simply defined to true.  Some uses of
  this could perhaps be implemented as new 'low' routines for the
  various places that check it instead?

- Pass down ptid into aarch64_handle_breakpoint and
  aarch64_handle_watchpoint rather than using current_lwp_ptid which
  is only defined on Linux.  In addition, pass the ptid on to
  aarch64_notify_debug_reg_change instead of the unused state
  argument.

1 files changed, 1 insertions, 0 deletions

diff --git a/gdbserver/configure.srv b/gdbserver/configure.srv
index 6e09b0e..d370536 100644
--- a/gdbserver/configure.srv
+++ b/gdbserver/configure.srv
@@ -39,6 +39,7 @@ fi
 
 case "${gdbserver_host}" in
   aarch64*-*-linux*)	srv_tgtobj="linux-aarch64-low.o"
+			srv_tgtobj="$srv_tgtobj nat/aarch64-hw-point.o"
 			srv_tgtobj="$srv_tgtobj nat/aarch64-linux-hw-point.o"
 			srv_tgtobj="$srv_tgtobj linux-aarch32-low.o"
 			srv_tgtobj="$srv_tgtobj linux-aarch32-tdesc.o"