gdbserver: turn target op 'hostio_last_error' into a method

gdbserver/ChangeLog:
2020-02-20  Tankut Baris Aktemur  <tankut.baris.aktemur@intel.com>

	Turn process_stratum_target's hostio_last_error op into a
	method of process_target.

	* target.h (struct process_stratum_target): Remove the target op.
	(class process_target): Add the target op.
	* target.cc: Add "hostio.h" to includes.
	(process_target::hostio_last_error): Define.

	Update the derived classes and callers below.

	* hostio.cc (hostio_error): Update.
	* linux-low.cc: Remove "hostio.h" from includes.
	(linux_target_ops): Update.
	* lynx-low.cc (lynx_target_ops): Update.
	* nto-low.cc (nto_target_ops): Update.
	* win32-low.h (class win32_process_target): Update.
	* win32-low.cc (win32_target_ops): Update.
	(wince_hostio_last_error): Turn into ...
	(win32_process_target::hostio_last_error): ... this.

1 files changed, 7 insertions, 0 deletions

diff --git a/gdbserver/target.cc b/gdbserver/target.cc
index f578dbe..e09ee7d 100644
--- a/gdbserver/target.cc
+++ b/gdbserver/target.cc
@@ -21,6 +21,7 @@
 #include "server.h"
 #include "tracepoint.h"
 #include "gdbsupport/byte-vector.h"
+#include "hostio.h"
 
 process_stratum_target *the_target;
 
@@ -506,3 +507,9 @@ process_target::get_tls_address (thread_info *thread, CORE_ADDR offset,
 {
   gdb_assert_not_reached ("target op get_tls_address not supported");
 }
+
+void
+process_target::hostio_last_error (char *buf)
+{
+  hostio_last_error_from_errno (buf);
+}