gdbserver: turn target ops 'thread_name' and 'thread_handle' into methods

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

	Turn process_stratum_target's thread_name and thread_handle ops
	into methods of process_target.

	* target.h (struct process_stratum_target): Remove the target ops.
	(class process_target): Add the target ops.
	(target_thread_name): Update the macro.
	(target_thread_handle): Update the macro.
	* target.cc (process_target::thread_name): Define.
	(process_target::thread_handle): Define.

	Update the derived classes and callers below.

	* linux-low.cc (linux_target_ops): Update.
	(linux_process_target::thread_name): Define.
	(linux_process_target::thread_handle): Define.
	* 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.

8 files changed, 70 insertions, 26 deletions

diff --git a/gdbserver/ChangeLog b/gdbserver/ChangeLog
index 6947922..592697a 100644
--- a/gdbserver/ChangeLog
+++ b/gdbserver/ChangeLog
@@ -1,5 +1,27 @@
 2020-02-20  Tankut Baris Aktemur  <tankut.baris.aktemur@intel.com>
 
+	Turn process_stratum_target's thread_name and thread_handle ops
+	into methods of process_target.
+
+	* target.h (struct process_stratum_target): Remove the target ops.
+	(class process_target): Add the target ops.
+	(target_thread_name): Update the macro.
+	(target_thread_handle): Update the macro.
+	* target.cc (process_target::thread_name): Define.
+	(process_target::thread_handle): Define.
+
+	Update the derived classes and callers below.
+
+	* linux-low.cc (linux_target_ops): Update.
+	(linux_process_target::thread_name): Define.
+	(linux_process_target::thread_handle): Define.
+	* 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 breakpoint_kind_from_pc,
 	sw_breakpoint_from_kind, and breakpoint_kind_from_current_state
 	ops into methods of process_target.
diff --git a/gdbserver/linux-low.cc b/gdbserver/linux-low.cc
index 20a936b..f910866 100644
--- a/gdbserver/linux-low.cc
+++ b/gdbserver/linux-low.cc
@@ -7397,6 +7397,21 @@ linux_process_target::breakpoint_kind_from_current_state (CORE_ADDR *pcptr)
     return breakpoint_kind_from_pc (pcptr);
 }
 
+const char *
+linux_process_target::thread_name (ptid_t thread)
+{
+  return linux_proc_tid_get_name (thread);
+}
+
+#if USE_THREAD_DB
+bool
+linux_process_target::thread_handle (ptid_t ptid, gdb_byte **handle,
+				     int *handle_len)
+{
+  return thread_db_thread_handle (ptid, handle, handle_len);
+}
+#endif
+
 /* Default implementation of linux_target_ops method "set_pc" for
    32-bit pc register which is literally named "pc".  */
 
@@ -7509,15 +7524,9 @@ linux_get_hwcap2 (int wordsize)
 static linux_process_target the_linux_target;
 
 static process_stratum_target linux_target_ops = {
-  linux_proc_tid_get_name,
   linux_supports_software_single_step,
   linux_supports_catch_syscall,
   linux_get_ipa_tdesc_idx,
-#if USE_THREAD_DB
-  thread_db_thread_handle,
-#else
-  NULL,
-#endif
   &the_linux_target,
 };
 
diff --git a/gdbserver/linux-low.h b/gdbserver/linux-low.h
index ae422b8..2acd65f 100644
--- a/gdbserver/linux-low.h
+++ b/gdbserver/linux-low.h
@@ -468,6 +468,13 @@ public:
   const gdb_byte *sw_breakpoint_from_kind (int kind, int *size) override;
 
   int breakpoint_kind_from_current_state (CORE_ADDR *pcptr) override;
+
+  const char *thread_name (ptid_t thread) override;
+
+#if USE_THREAD_DB
+  bool thread_handle (ptid_t ptid, gdb_byte **handle,
+		      int *handle_len) override;
+#endif
 };
 
 #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 b07412f..0c460be 100644
--- a/gdbserver/lynx-low.cc
+++ b/gdbserver/lynx-low.cc
@@ -741,11 +741,9 @@ static lynx_process_target the_lynx_target;
 /* The LynxOS target_ops vector.  */
 
 static process_stratum_target lynx_target_ops = {
-  NULL,  /* thread_name */
   NULL,  /* supports_software_single_step */
   NULL,  /* supports_catch_syscall */
   NULL,  /* get_ipa_tdesc_idx */
-  NULL,  /* thread_handle */
   &the_lynx_target,
 };
 
diff --git a/gdbserver/nto-low.cc b/gdbserver/nto-low.cc
index b0ac86f..4c3c5a3 100644
--- a/gdbserver/nto-low.cc
+++ b/gdbserver/nto-low.cc
@@ -947,11 +947,9 @@ nto_process_target::sw_breakpoint_from_kind (int kind, int *size)
 static nto_process_target the_nto_target;
 
 static process_stratum_target nto_target_ops = {
-  NULL, /* thread_name */
   NULL, /* supports_software_single_step */
   NULL, /* supports_catch_syscall */
   NULL, /* get_ipa_tdesc_idx */
-  NULL, /* thread_handle */
   &the_nto_target,
 };
 
diff --git a/gdbserver/target.cc b/gdbserver/target.cc
index 76eef62..b7ed26b 100644
--- a/gdbserver/target.cc
+++ b/gdbserver/target.cc
@@ -801,3 +801,16 @@ process_target::breakpoint_kind_from_current_state (CORE_ADDR *pcptr)
 {
   return breakpoint_kind_from_pc (pcptr);
 }
+
+const char *
+process_target::thread_name (ptid_t thread)
+{
+  return nullptr;
+}
+
+bool
+process_target::thread_handle (ptid_t ptid, gdb_byte **handle,
+			       int *handle_len)
+{
+  return false;
+}
diff --git a/gdbserver/target.h b/gdbserver/target.h
index 4651e44..4d9de55 100644
--- a/gdbserver/target.h
+++ b/gdbserver/target.h
@@ -70,10 +70,6 @@ class process_target;
    shared code.  */
 struct process_stratum_target
 {
-  /* Return the thread's name, or NULL if the target is unable to determine it.
-     The returned value must not be freed by the caller.  */
-  const char *(*thread_name) (ptid_t thread);
-
   /* Returns true if the target can software single step.  */
   int (*supports_software_single_step) (void);
 
@@ -84,11 +80,6 @@ struct process_stratum_target
   /* Return tdesc index for IPA.  */
   int (*get_ipa_tdesc_idx) (void);
 
-  /* Thread ID to (numeric) thread handle: Return true on success and
-     false for failure.  Return pointer to thread handle via HANDLE
-     and the handle's length via HANDLE_LEN.  */
-  bool (*thread_handle) (ptid_t ptid, gdb_byte **handle, int *handle_len);
-
   /* The object that will gradually replace this struct.  */
   process_target *pt;
 };
@@ -503,6 +494,17 @@ public:
      PC.  The PCPTR is adjusted to the real memory location in case a
      flag (e.g., the Thumb bit on ARM) is present in the  PC.  */
   virtual int breakpoint_kind_from_current_state (CORE_ADDR *pcptr);
+
+  /* Return the thread's name, or NULL if the target is unable to
+     determine it.  The returned value must not be freed by the
+     caller.  */
+  virtual const char *thread_name (ptid_t thread);
+
+  /* Thread ID to (numeric) thread handle: Return true on success and
+     false for failure.  Return pointer to thread handle via HANDLE
+     and the handle's length via HANDLE_LEN.  */
+  virtual bool thread_handle (ptid_t ptid, gdb_byte **handle,
+			      int *handle_len);
 };
 
 extern process_stratum_target *the_target;
@@ -683,13 +685,10 @@ void done_accessing_memory (void);
   the_target->pt->core_of_thread (ptid)
 
 #define target_thread_name(ptid)                                \
-  (the_target->thread_name ? (*the_target->thread_name) (ptid)  \
-   : NULL)
+  the_target->pt->thread_name (ptid)
 
 #define target_thread_handle(ptid, handle, handle_len) \
-   (the_target->thread_handle ? (*the_target->thread_handle) \
-                                  (ptid, handle, handle_len) \
-   : false)
+  the_target->pt->thread_handle (ptid, handle, handle_len)
 
 int read_inferior_memory (CORE_ADDR memaddr, unsigned char *myaddr, int len);
 
diff --git a/gdbserver/win32-low.cc b/gdbserver/win32-low.cc
index 71adf18..218f007 100644
--- a/gdbserver/win32-low.cc
+++ b/gdbserver/win32-low.cc
@@ -1858,11 +1858,9 @@ win32_process_target::sw_breakpoint_from_kind (int kind, int *size)
 static win32_process_target the_win32_target;
 
 static process_stratum_target win32_target_ops = {
-  NULL, /* thread_name */
   NULL, /* supports_software_single_step */
   NULL, /* supports_catch_syscall */
   NULL, /* get_ipa_tdesc_idx */
-  NULL, /* thread_handle */
   &the_win32_target,
 };