gdbserver: turn target op 'supports_disable_randomization' into a method

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

	Turn process_stratum_target's supports_disable_randomization 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_supports_disable_randomization): Update the macro.
	* target.cc (process_target::supports_disable_randomization): Define.

	Update the derived classes and callers below.

	* linux-low.cc (linux_target_ops): Update.
	(linux_supports_disable_randomization): Turn into ...
	(linux_process_target::supports_disable_randomization): ... 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/ChangeLog

@@ -1,3 +1,23 @@
+2020-02-20  Tankut Baris Aktemur  <tankut.baris.aktemur@intel.com>
+
+	Turn process_stratum_target's supports_disable_randomization 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_supports_disable_randomization): Update the macro.
+	* target.cc (process_target::supports_disable_randomization): Define.
+
+	Update the derived classes and callers below.
+
+	* linux-low.cc (linux_target_ops): Update.
+	(linux_supports_disable_randomization): Turn into ...
+	(linux_process_target::supports_disable_randomization): ... 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.
+
 2020-02-20  Tankut Baris Aktemur  <tankut.baris.aktemur@intel.com>
 
 	Turn process_stratum_target's emit_ops op into a method of

gdbserver/linux-low.cc

@@ -6414,13 +6414,13 @@ linux_process_target::core_of_thread (ptid_t ptid)
   return linux_common_core_of_thread (ptid);
 }
 
-static int
+bool
-linux_supports_disable_randomization (void)
+linux_process_target::supports_disable_randomization ()
 {
 #ifdef HAVE_PERSONALITY
-  return 1;
+  return true;
 #else
-  return 0;
+  return false;
 #endif
 }
 
@@ -7456,7 +7456,6 @@ linux_get_hwcap2 (int wordsize)
 static linux_process_target the_linux_target;
 
 static process_stratum_target linux_target_ops = {
-  linux_supports_disable_randomization,
   linux_qxfer_libraries_svr4,
   linux_supports_agent,
 #ifdef HAVE_LINUX_BTRACE

gdbserver/linux-low.h

@@ -422,6 +422,8 @@ public:
   int get_min_fast_tracepoint_insn_len () override;
 
   struct emit_ops *emit_ops () override;
+
+  bool supports_disable_randomization () override;
 };
 
 #define get_thread_lwp(thr) ((struct lwp_info *) (thread_target_data (thr)))

gdbserver/lynx-low.cc

@@ -735,7 +735,6 @@ static lynx_process_target the_lynx_target;
 /* The LynxOS target_ops vector.  */
 
 static process_stratum_target lynx_target_ops = {
-  NULL,  /* supports_disable_randomization */
   NULL,  /* qxfer_libraries_svr4 */
   NULL,  /* support_agent */
   NULL,  /* enable_btrace */

gdbserver/nto-low.cc

@@ -947,7 +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_disable_randomization */
   NULL, /* qxfer_libraries_svr4 */
   NULL, /* support_agent */
   NULL, /* enable_btrace */

gdbserver/target.cc

@@ -699,3 +699,9 @@ process_target::emit_ops ()
 {
   return nullptr;
 }
+
+bool
+process_target::supports_disable_randomization ()
+{
+  return false;
+}

gdbserver/target.h

@@ -70,9 +70,6 @@ class process_target;
    shared code.  */
 struct process_stratum_target
 {
-  /* Returns true if the target supports disabling randomization.  */
-  int (*supports_disable_randomization) (void);
-
   /* Read solib info on SVR4 platforms.  */
   int (*qxfer_libraries_svr4) (const char *annex, unsigned char *readbuf,
 			       unsigned const char *writebuf,
@@ -493,6 +490,9 @@ public:
   /* Return the bytecode operations vector for the current inferior.
      Returns nullptr if bytecode compilation is not supported.  */
   virtual struct emit_ops *emit_ops ();
+
+  /* Returns true if the target supports disabling randomization.  */
+  virtual bool supports_disable_randomization ();
 };
 
 extern process_stratum_target *the_target;
@@ -600,8 +600,7 @@ int kill_inferior (process_info *proc);
   the_target->pt->emit_ops ()
 
 #define target_supports_disable_randomization() \
-  (the_target->supports_disable_randomization ? \
+  the_target->pt->supports_disable_randomization ()
-   (*the_target->supports_disable_randomization) () : 0)
 
 #define target_supports_agent() \
   (the_target->supports_agent ? \

gdbserver/win32-low.cc

@@ -1858,7 +1858,6 @@ 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_disable_randomization */
   NULL, /* qxfer_libraries_svr4 */
   NULL, /* support_agent */
   NULL, /* enable_btrace */