gdbserver: turn target op 'attach' into a method

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

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

	* target.h (struct process_stratum_target): Remove the target op.
	(class process_target): Add the target op.
	(myattach): Update the macro.

	Update the derived classes and callers below.

	* linux-low.cc (linux_target_ops): Update.
	(linux_attach): Turn into ...
	(linux_process_target::attach): ... this.
	* linux-low.h (class linux_process_target): Update.
	* lynx-low.cc (lynx_target_ops): Update.
	(lynx_attach): Turn into ...
	(lynx_process_target::attach): ... this.
	* lynx-low.h (class lynx_process_target): Update.
	* nto-low.cc (nto_target_ops): Update.
	(nto_attach): Turn into ...
	(nto_process_target::attach): ... this.
	* nto-low.h (class nto_process_target): Update.
	* win32-low.cc (win32_target_ops): Update.
	(win32_attach): Turn into ...
	(win32_process_target::attach): ... this.
	* win32-low.h (class win32_process_target): Update.

1 files changed, 2 insertions, 0 deletions

diff --git a/gdbserver/nto-low.h b/gdbserver/nto-low.h
index 3bad08b..f6faacb 100644
--- a/gdbserver/nto-low.h
+++ b/gdbserver/nto-low.h
@@ -50,6 +50,8 @@ public:
 
   int create_inferior (const char *program,
 		       const std::vector<char *> &program_args) override;
+
+  int attach (unsigned long pid) override;
 };
 
 /* The inferior's target description.  This is a global because the