[PATCH v2 31/58] gdbserver: turn target ops 'supports_{fork,vfork,exec}_events' into methods

[Tankut Baris Aktemur <tankut.baris.aktemur@intel.com>]

gdbserver/ChangeLog:
2020-02-10  Tankut Baris Aktemur  <tankut.baris.aktemur@intel.com>

	Turn process_stratum_target's supports_fork_events,
	supports_vfork_events, and supports_exec_events ops into methods
	of process_target.

	* target.h (struct process_stratum_target): Remove the target ops.
	(class process_target): Add the target ops.
	(target_supports_fork_events): Update the macro.
	(target_supports_vfork_events): Update the macro.
	(target_supports_exec_events): Update the macro.
	* target.cc (process_target::supports_fork_events): Define.
	(process_target::supports_vfork_events): Define.
	(process_target::supports_exec_events): Define.

	Update the derived classes and callers below.

	* linux-low.cc (linux_target_ops): Update.
	(linux_supports_fork_events): Turn into ...
	(linux_process_target::supports_fork_events): ... this.
	(linux_supports_vfork_events): Turn into ...
	(linux_process_target::supports_vfork_events): ... this.
	(linux_supports_exec_events): Turn into ...
	(linux_process_target::supports_exec_events): ... this.
	* linux-low.h (class linux_process_target): Update.
	* lynx-low.cc (lynx_target_ops): Update.
	* nto-low.cc (nto_target_ops): Update.
	* win32-low.cc (win32_target_ops): Update.
---
 gdbserver/linux-low.cc | 15 ++++++---------
 gdbserver/linux-low.h  |  6 ++++++
 gdbserver/lynx-low.cc  |  3 ---
 gdbserver/nto-low.cc   |  3 ---
 gdbserver/target.cc    | 18 ++++++++++++++++++
 gdbserver/target.h     | 27 ++++++++++++---------------
 gdbserver/win32-low.cc |  3 ---
 7 files changed, 42 insertions(+), 33 deletions(-)

diff --git a/gdbserver/linux-low.cc b/gdbserver/linux-low.cc
index 770cf472840..7c96b45ff16 100644
--- a/gdbserver/linux-low.cc
+++ b/gdbserver/linux-low.cc
@@ -6342,24 +6342,24 @@ linux_process_target::supports_multi_process ()
 
 /* Check if fork events are supported.  */
 
-static int
-linux_supports_fork_events (void)
+bool
+linux_process_target::supports_fork_events ()
 {
   return linux_supports_tracefork ();
 }
 
 /* Check if vfork events are supported.  */
 
-static int
-linux_supports_vfork_events (void)
+bool
+linux_process_target::supports_vfork_events ()
 {
   return linux_supports_tracefork ();
 }
 
 /* Check if exec events are supported.  */
 
-static int
-linux_supports_exec_events (void)
+bool
+linux_process_target::supports_exec_events ()
 {
   return linux_supports_traceexec ();
 }
@@ -7425,9 +7425,6 @@ linux_get_hwcap2 (int wordsize)
 static linux_process_target the_linux_target;
 
 static process_stratum_target linux_target_ops = {
-  linux_supports_fork_events,
-  linux_supports_vfork_events,
-  linux_supports_exec_events,
   linux_handle_new_gdb_connection,
 #ifdef USE_THREAD_DB
   thread_db_handle_monitor_command,
diff --git a/gdbserver/linux-low.h b/gdbserver/linux-low.h
index 58730e2c0a3..f78ef78ad6f 100644
--- a/gdbserver/linux-low.h
+++ b/gdbserver/linux-low.h
@@ -365,6 +365,12 @@ public:
   int start_non_stop (bool enable) override;
 
   bool supports_multi_process () override;
+
+  bool supports_fork_events () override;
+
+  bool supports_vfork_events () override;
+
+  bool supports_exec_events () override;
 };
 
 #define get_thread_lwp(thr) ((struct lwp_info *) (thread_target_data (thr)))
diff --git a/gdbserver/lynx-low.cc b/gdbserver/lynx-low.cc
index 897bc9e663f..088582b2609 100644
--- a/gdbserver/lynx-low.cc
+++ b/gdbserver/lynx-low.cc
@@ -735,9 +735,6 @@ static lynx_process_target the_lynx_target;
 /* The LynxOS target_ops vector.  */
 
 static process_stratum_target lynx_target_ops = {
-  NULL,  /* supports_fork_events */
-  NULL,  /* supports_vfork_events */
-  NULL,  /* supports_exec_events */
   NULL,  /* handle_new_gdb_connection */
   NULL,  /* handle_monitor_command */
   NULL,  /* core_of_thread */
diff --git a/gdbserver/nto-low.cc b/gdbserver/nto-low.cc
index 11b290a20a3..0d1432b8bac 100644
--- a/gdbserver/nto-low.cc
+++ b/gdbserver/nto-low.cc
@@ -947,9 +947,6 @@ nto_sw_breakpoint_from_kind (int kind, int *size)
 static nto_process_target the_nto_target;
 
 static process_stratum_target nto_target_ops = {
-  NULL, /* supports_fork_events */
-  NULL, /* supports_vfork_events */
-  NULL, /* supports_exec_events */
   NULL, /* handle_new_gdb_connection */
   NULL, /* handle_monitor_command */
   NULL, /* core_of_thread */
diff --git a/gdbserver/target.cc b/gdbserver/target.cc
index 485eecbee91..15d48427f31 100644
--- a/gdbserver/target.cc
+++ b/gdbserver/target.cc
@@ -553,3 +553,21 @@ process_target::supports_multi_process ()
 {
   return false;
 }
+
+bool
+process_target::supports_fork_events ()
+{
+  return false;
+}
+
+bool
+process_target::supports_vfork_events ()
+{
+  return false;
+}
+
+bool
+process_target::supports_exec_events ()
+{
+  return false;
+}
diff --git a/gdbserver/target.h b/gdbserver/target.h
index 52c80b848d0..ef2fd018463 100644
--- a/gdbserver/target.h
+++ b/gdbserver/target.h
@@ -70,15 +70,6 @@ class process_target;
    shared code.  */
 struct process_stratum_target
 {
-  /* Returns true if fork events are supported.  */
-  int (*supports_fork_events) (void);
-
-  /* Returns true if vfork events are supported.  */
-  int (*supports_vfork_events) (void);
-
-  /* Returns true if exec events are supported.  */
-  int (*supports_exec_events) (void);
-
   /* Allows target to re-initialize connection-specific settings.  */
   void (*handle_new_gdb_connection) (void);
 
@@ -486,6 +477,15 @@ public:
 
   /* Returns true if the target supports multi-process debugging.  */
   virtual bool supports_multi_process ();
+
+  /* Returns true if fork events are supported.  */
+  virtual bool supports_fork_events ();
+
+  /* Returns true if vfork events are supported.  */
+  virtual bool supports_vfork_events ();
+
+  /* Returns true if exec events are supported.  */
+  virtual bool supports_exec_events ();
 };
 
 extern process_stratum_target *the_target;
@@ -504,16 +504,13 @@ void set_target_ops (process_stratum_target *);
 int kill_inferior (process_info *proc);
 
 #define target_supports_fork_events() \
-  (the_target->supports_fork_events ? \
-   (*the_target->supports_fork_events) () : 0)
+  the_target->pt->supports_fork_events ()
 
 #define target_supports_vfork_events() \
-  (the_target->supports_vfork_events ? \
-   (*the_target->supports_vfork_events) () : 0)
+  the_target->pt->supports_vfork_events ()
 
 #define target_supports_exec_events() \
-  (the_target->supports_exec_events ? \
-   (*the_target->supports_exec_events) () : 0)
+  the_target->pt->supports_exec_events ()
 
 #define target_handle_new_gdb_connection()		 \
   do							 \
diff --git a/gdbserver/win32-low.cc b/gdbserver/win32-low.cc
index ee7a0ea92a6..4cea682ee52 100644
--- a/gdbserver/win32-low.cc
+++ b/gdbserver/win32-low.cc
@@ -1852,9 +1852,6 @@ win32_sw_breakpoint_from_kind (int kind, int *size)
 static win32_process_target the_win32_target;
 
 static process_stratum_target win32_target_ops = {
-  NULL, /* supports_fork_events */
-  NULL, /* supports_vfork_events */
-  NULL, /* supports_exec_events */
   NULL, /* handle_new_gdb_connection */
   NULL, /* handle_monitor_command */
   NULL, /* core_of_thread */
-- 
2.17.1