gdbserver: turn target op 'read_auxv' into a method

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

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

	* target.h (class process_stratum_target): Remove the target op.
	(struct process_target): Add the target op.  Also add
	'supports_read_auxv'.
	* target.cc (process_target::read_auxv): Define.
	(process_target::supports_read_auxv): Define.

	Update the derived classes and callers below.

	* server.cc (handle_qxfer_auxv): Update.
	(handle_query): Update.
	* linux-low.cc (linux_target_ops): Update.
	(linux_process_target::supports_read_auxv): Define.
	(linux_read_auxv): Turn into ...
	(linux_process_target::read_auxv): ... this.
	* linux-low.h (class linux_process_target): Update.
	* lynx-low.cc (lynx_target_ops): Update.
	* nto-low.cc (nto_target_ops): Update.
	(nto_process_target::supports_read_auxv): Define.
	(nto_read_auxv): Turn into ...
	(nto_process_target::read_auxv): ... this.
	* nto-low.h (class nto_process_target): Update.
	* win32-low.cc (win32_target_ops): Update.

1 files changed, 13 insertions, 0 deletions

diff --git a/gdbserver/target.cc b/gdbserver/target.cc
index dd9ee8d..97e9d4a 100644
--- a/gdbserver/target.cc
+++ b/gdbserver/target.cc
@@ -414,3 +414,16 @@ process_target::look_up_symbols ()
 {
   /* Nop.  */
 }
+
+bool
+process_target::supports_read_auxv ()
+{
+  return false;
+}
+
+int
+process_target::read_auxv (CORE_ADDR offset, unsigned char *myaddr,
+			   unsigned int len)
+{
+  gdb_assert_not_reached ("target op read_auxv not supported");
+}