Eliminate find_target_beneath

Call target_ops::beneath() throughout instead.

gdb/ChangeLog:
2018-06-07  Pedro Alves  <palves@redhat.com>

	* target.h (find_target_beneath): Delete declaration.
	* target.c (find_target_beneath): Delete definition.
	* aix-thread.c: All callers of find_target_beneath adjusted to
	call target_ops::beneath instead.
	* bsd-uthread.c: Likewise.
	* linux-thread-db.c: Likewise.
	* ravenscar-thread.c: Likewise.
	* sol-thread.c: Likewise.
	* spu-multiarch.c: Likewise.

gdb/ChangeLog

@@ -1,3 +1,15 @@
+2018-06-07  Pedro Alves  <palves@redhat.com>
+
+	* target.h (find_target_beneath): Delete declaration.
+	* target.c (find_target_beneath): Delete definition.
+	* aix-thread.c: All callers of find_target_beneath adjusted to
+	call target_ops::beneath instead.
+	* bsd-uthread.c: Likewise.
+	* linux-thread-db.c: Likewise.
+	* ravenscar-thread.c: Likewise.
+	* sol-thread.c: Likewise.
+	* spu-multiarch.c: Likewise.
+
 2018-06-07  Pedro Alves  <palves@redhat.com>
 
 	* target.h (target_ops) <beneath>: Now a method.  All references

gdb/aix-thread.c

@@ -1023,7 +1023,7 @@ aix_thread_inferior_created (struct target_ops *ops, int from_tty)
 void
 aix_thread_target::detach (inferior *inf, int from_tty)
 {
-  struct target_ops *beneath = find_target_beneath (this);
+  target_ops *beneath = this->beneath ();
 
   pd_disable ();
   beneath->detach (inf, from_tty);
@@ -1041,10 +1041,9 @@ aix_thread_target::resume (ptid_t ptid, int step, enum gdb_signal sig)
   if (!PD_TID (ptid))
     {
       scoped_restore save_inferior_ptid = make_scoped_restore (&inferior_ptid);
-      struct target_ops *beneath = find_target_beneath (this);
       
       inferior_ptid = pid_to_ptid (ptid_get_pid (inferior_ptid));
-      beneath->resume (ptid, step, sig);
+      beneath ()->resume (ptid, step, sig);
     }
   else
     {
@@ -1078,15 +1077,13 @@ ptid_t
 aix_thread_target::wait (ptid_t ptid, struct target_waitstatus *status,
 			 int options)
 {
-  struct target_ops *beneath = find_target_beneath (this);
-
   {
     scoped_restore save_inferior_ptid = make_scoped_restore (&inferior_ptid);
 
     pid_to_prc (&ptid);
 
     inferior_ptid = pid_to_ptid (ptid_get_pid (inferior_ptid));
-    ptid = beneath->wait (ptid, status, options);
+    ptid = beneath ()->wait (ptid, status, options);
   }
 
   if (ptid_get_pid (ptid) == -1)
@@ -1358,10 +1355,9 @@ aix_thread_target::fetch_registers (struct regcache *regcache, int regno)
 {
   struct thread_info *thread;
   pthdb_tid_t tid;
-  struct target_ops *beneath = find_target_beneath (this);
 
   if (!PD_TID (regcache->ptid ()))
-    beneath->fetch_registers (regcache, regno);
+    beneath ()->fetch_registers (regcache, regno);
   else
     {
       thread = find_thread_ptid (regcache->ptid ());
@@ -1699,10 +1695,9 @@ aix_thread_target::store_registers (struct regcache *regcache, int regno)
 {
   struct thread_info *thread;
   pthdb_tid_t tid;
-  struct target_ops *beneath = find_target_beneath (this);
 
   if (!PD_TID (regcache->ptid ()))
-    beneath->store_registers (regcache, regno);
+    beneath ()->store_registers (regcache, regno);
   else
     {
       thread = find_thread_ptid (regcache->ptid ());
@@ -1726,11 +1721,10 @@ aix_thread_target::xfer_partial (enum target_object object,
 				 ULONGEST *xfered_len)
 {
   scoped_restore save_inferior_ptid = make_scoped_restore (&inferior_ptid);
-  struct target_ops *beneath = find_target_beneath (this);
 
   inferior_ptid = pid_to_ptid (ptid_get_pid (inferior_ptid));
-  return beneath->xfer_partial (object, annex, readbuf,
+  return beneath ()->xfer_partial (object, annex, readbuf,
-				writebuf, offset, len, xfered_len);
+				   writebuf, offset, len, xfered_len);
 }
 
 /* Clean up after the inferior exits.  */
@@ -1738,7 +1732,7 @@ aix_thread_target::xfer_partial (enum target_object object,
 void
 aix_thread_target::mourn_inferior ()
 {
-  struct target_ops *beneath = find_target_beneath (this);
+  target_ops *beneath = beneath ();
 
   pd_deactivate ();
   beneath->mourn_inferior ();
@@ -1749,10 +1743,8 @@ aix_thread_target::mourn_inferior ()
 bool
 aix_thread_target::thread_alive (ptid_t ptid)
 {
-  struct target_ops *beneath = find_target_beneath (this);
-
   if (!PD_TID (ptid))
-    return beneath->thread_alive (ptid);
+    return beneath ()->thread_alive (ptid);
 
   /* We update the thread list every time the child stops, so all
      valid threads should be in the thread list.  */
@@ -1766,10 +1758,9 @@ const char *
 aix_thread_target::pid_to_str (ptid_t ptid)
 {
   static char *ret = NULL;
-  struct target_ops *beneath = find_target_beneath (this);
 
   if (!PD_TID (ptid))
-    return beneath->pid_to_str (ptid);
+    return beneath ()->pid_to_str (ptid);
 
   /* Free previous return value; a new one will be allocated by
      xstrprintf().  */

gdb/bsd-uthread.c

@@ -310,8 +310,7 @@ bsd_uthread_solib_unloaded (struct so_list *so)
 void
 bsd_uthread_target::mourn_inferior ()
 {
-  struct target_ops *beneath = find_target_beneath (this);
+  beneath ()->mourn_inferior ();
-  beneath->mourn_inferior ();
   bsd_uthread_deactivate ();
 }
 
@@ -323,7 +322,6 @@ bsd_uthread_target::fetch_registers (struct regcache *regcache, int regnum)
     = (struct bsd_uthread_ops *) gdbarch_data (gdbarch, bsd_uthread_data);
   ptid_t ptid = regcache->ptid ();
   CORE_ADDR addr = ptid_get_tid (ptid);
-  struct target_ops *beneath = find_target_beneath (this);
   CORE_ADDR active_addr;
   scoped_restore save_inferior_ptid = make_scoped_restore (&inferior_ptid);
 
@@ -332,7 +330,7 @@ bsd_uthread_target::fetch_registers (struct regcache *regcache, int regnum)
   inferior_ptid = ptid;
 
   /* Always fetch the appropriate registers from the layer beneath.  */
-  beneath->fetch_registers (regcache, regnum);
+  beneath ()->fetch_registers (regcache, regnum);
 
   /* FIXME: That might have gotten us more than we asked for.  Make
      sure we overwrite all relevant registers with values from the
@@ -354,7 +352,6 @@ bsd_uthread_target::store_registers (struct regcache *regcache, int regnum)
   struct gdbarch *gdbarch = regcache->arch ();
   struct bsd_uthread_ops *uthread_ops
     = (struct bsd_uthread_ops *) gdbarch_data (gdbarch, bsd_uthread_data);
-  struct target_ops *beneath = find_target_beneath (this);
   ptid_t ptid = regcache->ptid ();
   CORE_ADDR addr = ptid_get_tid (ptid);
   CORE_ADDR active_addr;
@@ -375,7 +372,7 @@ bsd_uthread_target::store_registers (struct regcache *regcache, int regnum)
     {
       /* Updating the thread that is currently running; pass the
          request to the layer beneath.  */
-      beneath->store_registers (regcache, regnum);
+      beneath ()->store_registers (regcache, regnum);
     }
 }
 
@@ -385,10 +382,9 @@ bsd_uthread_target::wait (ptid_t ptid, struct target_waitstatus *status,
 {
   enum bfd_endian byte_order = gdbarch_byte_order (target_gdbarch ());
   CORE_ADDR addr;
-  struct target_ops *beneath = find_target_beneath (this);
 
   /* Pass the request to the layer beneath.  */
-  ptid = beneath->wait (ptid, status, options);
+  ptid = beneath ()->wait (ptid, status, options);
 
   /* If the process is no longer alive, there's no point in figuring
      out the thread ID.  It will fail anyway.  */
@@ -433,15 +429,13 @@ void
 bsd_uthread_target::resume (ptid_t ptid, int step, enum gdb_signal sig)
 {
   /* Pass the request to the layer beneath.  */
-  struct target_ops *beneath = find_target_beneath (this);
+  beneath ()->resume (ptid, step, sig);
-  beneath->resume (ptid, step, sig);
 }
 
 bool
 bsd_uthread_target::thread_alive (ptid_t ptid)
 {
   enum bfd_endian byte_order = gdbarch_byte_order (target_gdbarch ());
-  struct target_ops *beneath = find_target_beneath (this);
   CORE_ADDR addr = ptid_get_tid (ptid);
 
   if (addr != 0)
@@ -456,7 +450,7 @@ bsd_uthread_target::thread_alive (ptid_t ptid)
 	return false;
     }
 
-  return beneath->thread_alive (ptid);
+  return beneath ()->thread_alive (ptid);
 }
 
 void

gdb/linux-thread-db.c

@@ -1094,11 +1094,9 @@ record_thread (struct thread_db_info *info,
 void
 thread_db_target::detach (inferior *inf, int from_tty)
 {
-  struct target_ops *target_beneath = find_target_beneath (this);
-
   delete_thread_db_info (inf->pid);
 
-  target_beneath->detach (inf, from_tty);
+  beneath ()->detach (inf, from_tty);
 
   /* NOTE: From this point on, inferior_ptid is null_ptid.  */
 
@@ -1113,9 +1111,8 @@ thread_db_target::wait (ptid_t ptid, struct target_waitstatus *ourstatus,
 			int options)
 {
   struct thread_db_info *info;
-  struct target_ops *beneath = find_target_beneath (this);
 
-  ptid = beneath->wait (ptid, ourstatus, options);
+  ptid = beneath ()->wait (ptid, ourstatus, options);
 
   switch (ourstatus->kind)
     {
@@ -1152,11 +1149,9 @@ thread_db_target::wait (ptid_t ptid, struct target_waitstatus *ourstatus,
 void
 thread_db_target::mourn_inferior ()
 {
-  struct target_ops *target_beneath = find_target_beneath (this);
-
   delete_thread_db_info (ptid_get_pid (inferior_ptid));
 
-  target_beneath->mourn_inferior ();
+  beneath ()->mourn_inferior ();
 
   /* Detach thread_db target ops.  */
   if (!thread_db_list)
@@ -1376,7 +1371,6 @@ const char *
 thread_db_target::pid_to_str (ptid_t ptid)
 {
   struct thread_info *thread_info = find_thread_ptid (ptid);
-  struct target_ops *beneath;
 
   if (thread_info != NULL && thread_info->priv != NULL)
     {
@@ -1389,8 +1383,7 @@ thread_db_target::pid_to_str (ptid_t ptid)
       return buf;
     }
 
-  beneath = find_target_beneath (this);
+  return beneath ()->pid_to_str (ptid);
-  return beneath->pid_to_str (ptid);
 }
 
 /* Return a string describing the state of the thread specified by
@@ -1451,7 +1444,6 @@ thread_db_target::get_thread_local_address (ptid_t ptid,
 					    CORE_ADDR offset)
 {
   struct thread_info *thread_info;
-  struct target_ops *beneath;
 
   /* Find the matching thread.  */
   thread_info = find_thread_ptid (ptid);
@@ -1523,8 +1515,7 @@ thread_db_target::get_thread_local_address (ptid_t ptid,
 	      : (CORE_ADDR) (uintptr_t) address);
     }
 
-  beneath = find_target_beneath (this);
+  return beneath ()->get_thread_local_address (ptid, lm, offset);
-  return beneath->get_thread_local_address (ptid, lm, offset);
 }
 
 /* Implement the to_get_ada_task_ptid target method for this target.  */
@@ -1539,7 +1530,6 @@ thread_db_target::get_ada_task_ptid (long lwp, long thread)
 void
 thread_db_target::resume (ptid_t ptid, int step, enum gdb_signal signo)
 {
-  struct target_ops *beneath = find_target_beneath (this);
   struct thread_db_info *info;
 
   if (ptid_equal (ptid, minus_one_ptid))
@@ -1553,7 +1543,7 @@ thread_db_target::resume (ptid_t ptid, int step, enum gdb_signal signo)
   if (info)
     info->need_stale_parent_threads_check = 0;
 
-  beneath->resume (ptid, step, signo);
+  beneath ()->resume (ptid, step, signo);
 }
 
 /* std::sort helper function for info_auto_load_libthread_db, sort the

gdb/ravenscar-thread.c

@@ -323,10 +323,8 @@ get_running_thread_id (int cpu)
 void
 ravenscar_thread_target::resume (ptid_t ptid, int step, enum gdb_signal siggnal)
 {
-  struct target_ops *beneath = find_target_beneath (this);
-
   inferior_ptid = base_ptid;
-  beneath->resume (base_ptid, step, siggnal);
+  beneath ()->resume (base_ptid, step, siggnal);
 }
 
 ptid_t
@@ -334,11 +332,10 @@ ravenscar_thread_target::wait (ptid_t ptid,
 			       struct target_waitstatus *status,
 			       int options)
 {
-  struct target_ops *beneath = find_target_beneath (this);
   ptid_t event_ptid;
 
   inferior_ptid = base_ptid;
-  event_ptid = beneath->wait (base_ptid, status, 0);
+  event_ptid = beneath ()->wait (base_ptid, status, 0);
   /* Find any new threads that might have been created, and update
      inferior_ptid to the active thread.
 
@@ -415,7 +412,6 @@ ravenscar_thread_target::pid_to_str (ptid_t ptid)
 void
 ravenscar_thread_target::fetch_registers (struct regcache *regcache, int regnum)
 {
-  struct target_ops *beneath = find_target_beneath (this);
   ptid_t ptid = regcache->ptid ();
 
   if (ravenscar_runtime_initialized ()
@@ -429,14 +425,13 @@ ravenscar_thread_target::fetch_registers (struct regcache *regcache, int regnum)
       arch_ops->to_fetch_registers (regcache, regnum);
     }
   else
-    beneath->fetch_registers (regcache, regnum);
+    beneath ()->fetch_registers (regcache, regnum);
 }
 
 void
 ravenscar_thread_target::store_registers (struct regcache *regcache,
 					  int regnum)
 {
-  target_ops *beneath = find_target_beneath (this);
   ptid_t ptid = regcache->ptid ();
 
   if (ravenscar_runtime_initialized ()
@@ -447,16 +442,15 @@ ravenscar_thread_target::store_registers (struct regcache *regcache,
       struct ravenscar_arch_ops *arch_ops
 	= gdbarch_ravenscar_ops (gdbarch);
 
-      beneath->store_registers (regcache, regnum);
+      beneath ()->store_registers (regcache, regnum);
     }
   else
-    beneath->store_registers (regcache, regnum);
+    beneath ()->store_registers (regcache, regnum);
 }
 
 void
 ravenscar_thread_target::prepare_to_store (struct regcache *regcache)
 {
-  target_ops *beneath = find_target_beneath (this);
   ptid_t ptid = regcache->ptid ();
 
   if (ravenscar_runtime_initialized ()
@@ -467,10 +461,10 @@ ravenscar_thread_target::prepare_to_store (struct regcache *regcache)
       struct ravenscar_arch_ops *arch_ops
 	= gdbarch_ravenscar_ops (gdbarch);
 
-      beneath->prepare_to_store (regcache);
+      beneath ()->prepare_to_store (regcache);
     }
   else
-    beneath->prepare_to_store (regcache);
+    beneath ()->prepare_to_store (regcache);
 }
 
 /* Implement the to_stopped_by_sw_breakpoint target_ops "method".  */
@@ -479,11 +473,10 @@ bool
 ravenscar_thread_target::stopped_by_sw_breakpoint ()
 {
   ptid_t saved_ptid = inferior_ptid;
-  struct target_ops *beneath = find_target_beneath (this);
   bool result;
 
   inferior_ptid = get_base_thread_from_ravenscar_task (saved_ptid);
-  result = beneath->stopped_by_sw_breakpoint ();
+  result = beneath ()->stopped_by_sw_breakpoint ();
   inferior_ptid = saved_ptid;
   return result;
 }
@@ -494,11 +487,10 @@ bool
 ravenscar_thread_target::stopped_by_hw_breakpoint ()
 {
   ptid_t saved_ptid = inferior_ptid;
-  struct target_ops *beneath = find_target_beneath (this);
   bool result;
 
   inferior_ptid = get_base_thread_from_ravenscar_task (saved_ptid);
-  result = beneath->stopped_by_hw_breakpoint ();
+  result = beneath ()->stopped_by_hw_breakpoint ();
   inferior_ptid = saved_ptid;
   return result;
 }
@@ -509,11 +501,10 @@ bool
 ravenscar_thread_target::stopped_by_watchpoint ()
 {
   ptid_t saved_ptid = inferior_ptid;
-  struct target_ops *beneath = find_target_beneath (this);
   bool result;
 
   inferior_ptid = get_base_thread_from_ravenscar_task (saved_ptid);
-  result = beneath->stopped_by_watchpoint ();
+  result = beneath ()->stopped_by_watchpoint ();
   inferior_ptid = saved_ptid;
   return result;
 }
@@ -524,11 +515,10 @@ bool
 ravenscar_thread_target::stopped_data_address (CORE_ADDR *addr_p)
 {
   ptid_t saved_ptid = inferior_ptid;
-  struct target_ops *beneath = find_target_beneath (this);
   bool result;
 
   inferior_ptid = get_base_thread_from_ravenscar_task (saved_ptid);
-  result = beneath->stopped_data_address (addr_p);
+  result = beneath ()->stopped_data_address (addr_p);
   inferior_ptid = saved_ptid;
   return result;
 }
@@ -536,10 +526,8 @@ ravenscar_thread_target::stopped_data_address (CORE_ADDR *addr_p)
 void
 ravenscar_thread_target::mourn_inferior ()
 {
-  struct target_ops *beneath = find_target_beneath (this);
-
   base_ptid = null_ptid;
-  beneath->mourn_inferior ();
+  beneath ()->mourn_inferior ();
   unpush_target (&ravenscar_ops);
 }
 
@@ -549,11 +537,10 @@ int
 ravenscar_thread_target::core_of_thread (ptid_t ptid)
 {
   ptid_t saved_ptid = inferior_ptid;
-  struct target_ops *beneath = find_target_beneath (this);
   int result;
 
   inferior_ptid = get_base_thread_from_ravenscar_task (saved_ptid);
-  result = beneath->core_of_thread (inferior_ptid);
+  result = beneath ()->core_of_thread (inferior_ptid);
   inferior_ptid = saved_ptid;
   return result;
 }

gdb/sol-thread.c

@@ -384,7 +384,7 @@ lwp_to_thread (ptid_t lwp)
 void
 sol_thread_target::detach (inferior *inf, int from_tty)
 {
-  struct target_ops *beneath = find_target_beneath (this);
+  target_ops *beneath = this->beneath ();
 
   sol_thread_active = 0;
   inferior_ptid = pid_to_ptid (ptid_get_pid (main_ph.ptid));
@@ -400,8 +400,6 @@ sol_thread_target::detach (inferior *inf, int from_tty)
 void
 sol_thread_target::resume (ptid_t ptid, int step, enum gdb_signal signo)
 {
-  struct target_ops *beneath = find_target_beneath (this);
-
   scoped_restore save_inferior_ptid = make_scoped_restore (&inferior_ptid);
 
   inferior_ptid = thread_to_lwp (inferior_ptid, ptid_get_pid (main_ph.ptid));
@@ -420,7 +418,7 @@ sol_thread_target::resume (ptid_t ptid, int step, enum gdb_signal signo)
 		 ptid_get_tid (save_ptid));
     }
 
-  beneath->resume (ptid, step, signo);
+  beneath ()->resume (ptid, step, signo);
 }
 
 /* Wait for any threads to stop.  We may have to convert PTID from a
@@ -432,7 +430,6 @@ sol_thread_target::wait (ptid_t ptid, struct target_waitstatus *ourstatus,
 {
   ptid_t rtnval;
   ptid_t save_ptid;
-  struct target_ops *beneath = find_target_beneath (this);
 
   save_ptid = inferior_ptid;
   scoped_restore save_inferior_ptid = make_scoped_restore (&inferior_ptid);
@@ -453,7 +450,7 @@ sol_thread_target::wait (ptid_t ptid, struct target_waitstatus *ourstatus,
 		 ptid_get_tid (save_ptid));
     }
 
-  rtnval = beneath->wait (ptid, ourstatus, options);
+  rtnval = beneath ()->wait (ptid, ourstatus, options);
 
   if (ourstatus->kind != TARGET_WAITKIND_EXITED)
     {
@@ -487,13 +484,12 @@ sol_thread_target::fetch_registers (struct regcache *regcache, int regnum)
   prfpregset_t fpregset;
   gdb_gregset_t *gregset_p = &gregset;
   gdb_fpregset_t *fpregset_p = &fpregset;
-  struct target_ops *beneath = find_target_beneath (this);
   ptid_t ptid = regcache->ptid ();
 
   if (!ptid_tid_p (ptid))
     {
       /* It's an LWP; pass the request on to the layer beneath.  */
-      beneath->fetch_registers (regcache, regnum);
+      beneath ()->fetch_registers (regcache, regnum);
       return;
     }
 
@@ -544,10 +540,8 @@ sol_thread_target::store_registers (struct regcache *regcache, int regnum)
 
   if (!ptid_tid_p (ptid))
     {
-      struct target_ops *beneath = find_target_beneath (this);
-
       /* It's an LWP; pass the request on to the layer beneath.  */
-      beneath->store_registers (regcache, regnum);
+      beneath ()->store_registers (regcache, regnum);
       return;
     }
 
@@ -595,8 +589,6 @@ sol_thread_target::xfer_partial (enum target_object object,
 				 ULONGEST offset, ULONGEST len,
 				 ULONGEST *xfered_len)
 {
-  struct target_ops *beneath = find_target_beneath (this);
-
   scoped_restore save_inferior_ptid = make_scoped_restore (&inferior_ptid);
 
   if (ptid_tid_p (inferior_ptid) || !target_thread_alive (inferior_ptid))
@@ -609,8 +601,8 @@ sol_thread_target::xfer_partial (enum target_object object,
       inferior_ptid = procfs_first_available ();
     }
 
-  return beneath->xfer_partial (object, annex, readbuf,
+  return beneath ()->xfer_partial (object, annex, readbuf,
-				writebuf, offset, len, xfered_len);
+				   writebuf, offset, len, xfered_len);
 }
 
 static void
@@ -691,7 +683,7 @@ sol_thread_new_objfile (struct objfile *objfile)
 void
 sol_thread_target::mourn_inferior ()
 {
-  struct target_ops *beneath = find_target_beneath (this);
+  target_ops *beneath = this->beneath ();
 
   sol_thread_active = 0;
 
@@ -721,10 +713,8 @@ sol_thread_target::thread_alive (ptid_t ptid)
     }
   else
     {
-      struct target_ops *beneath = find_target_beneath (this);
-
       /* It's an LPW; pass the request on to the layer below.  */
-      return beneath->thread_alive (ptid);
+      return beneath ()->thread_alive (ptid);
     }
 }
 
@@ -1062,13 +1052,11 @@ sol_update_thread_list_callback (const td_thrhandle_t *th, void *ignored)
 void
 sol_thread_target::update_thread_list ()
 {
-  struct target_ops *beneath = find_target_beneath (this);
-
   /* Delete dead threads.  */
   prune_threads ();
 
   /* Find any new LWP's.  */
-  beneath->update_thread_list ();
+  beneath ()->update_thread_list ();
 
   /* Then find any new user-level threads.  */
   p_td_ta_thr_iter (main_ta, sol_update_thread_list_callback, (void *) 0,

gdb/spu-multiarch.c

@@ -157,8 +157,7 @@ spu_multiarch_target::thread_architecture (ptid_t ptid)
   if (parse_spufs_run (ptid, &spufs_fd, &spufs_addr))
     return spu_gdbarch (spufs_fd);
 
-  target_ops *beneath = find_target_beneath (this);
+  return beneath ()->thread_architecture (ptid);
-  return beneath->thread_architecture (ptid);
 }
 
 /* Override the to_region_ok_for_hw_watchpoint routine.  */
@@ -166,13 +165,11 @@ spu_multiarch_target::thread_architecture (ptid_t ptid)
 int
 spu_multiarch_target::region_ok_for_hw_watchpoint (CORE_ADDR addr, int len)
 {
-  struct target_ops *ops_beneath = find_target_beneath (this);
-
   /* We cannot watch SPU local store.  */
   if (SPUADDR_SPU (addr) != -1)
     return 0;
 
-  return ops_beneath->region_ok_for_hw_watchpoint (addr, len);
+  return beneath ()->region_ok_for_hw_watchpoint (addr, len);
 }
 
 /* Override the to_fetch_registers routine.  */
@@ -182,7 +179,6 @@ spu_multiarch_target::fetch_registers (struct regcache *regcache, int regno)
 {
   struct gdbarch *gdbarch = regcache->arch ();
   enum bfd_endian byte_order = gdbarch_byte_order (gdbarch);
-  struct target_ops *ops_beneath = find_target_beneath (this);
   int spufs_fd;
   CORE_ADDR spufs_addr;
 
@@ -194,7 +190,7 @@ spu_multiarch_target::fetch_registers (struct regcache *regcache, int regno)
   /* This version applies only if we're currently in spu_run.  */
   if (gdbarch_bfd_arch_info (gdbarch)->arch != bfd_arch_spu)
     {
-      ops_beneath->fetch_registers (regcache, regno);
+      beneath ()->fetch_registers (regcache, regno);
       return;
     }
 
@@ -215,7 +211,7 @@ spu_multiarch_target::fetch_registers (struct regcache *regcache, int regno)
     {
       gdb_byte buf[4];
 
-      if (target_read (ops_beneath, TARGET_OBJECT_MEMORY, NULL,
+      if (target_read (beneath (), TARGET_OBJECT_MEMORY, NULL,
 		       buf, spufs_addr, sizeof buf) == sizeof buf)
 	regcache->raw_supply (SPU_PC_REGNUM, buf);
     }
@@ -228,7 +224,7 @@ spu_multiarch_target::fetch_registers (struct regcache *regcache, int regno)
       int i;
 
       xsnprintf (annex, sizeof annex, "%d/regs", spufs_fd);
-      if (target_read (ops_beneath, TARGET_OBJECT_SPU, annex,
+      if (target_read (beneath (), TARGET_OBJECT_SPU, annex,
 		       buf, 0, sizeof buf) == sizeof buf)
 	for (i = 0; i < SPU_NUM_GPRS; i++)
 	  regcache->raw_supply (i, buf + i*16);
@@ -241,7 +237,6 @@ void
 spu_multiarch_target::store_registers (struct regcache *regcache, int regno)
 {
   struct gdbarch *gdbarch = regcache->arch ();
-  struct target_ops *ops_beneath = find_target_beneath (this);
   int spufs_fd;
   CORE_ADDR spufs_addr;
 
@@ -253,7 +248,7 @@ spu_multiarch_target::store_registers (struct regcache *regcache, int regno)
   /* This version applies only if we're currently in spu_run.  */
   if (gdbarch_bfd_arch_info (gdbarch)->arch != bfd_arch_spu)
     {
-      ops_beneath->store_registers (regcache, regno);
+      beneath ()->store_registers (regcache, regno);
       return;
     }
 
@@ -267,7 +262,7 @@ spu_multiarch_target::store_registers (struct regcache *regcache, int regno)
       gdb_byte buf[4];
       regcache->raw_collect (SPU_PC_REGNUM, buf);
 
-      target_write (ops_beneath, TARGET_OBJECT_MEMORY, NULL,
+      target_write (beneath (), TARGET_OBJECT_MEMORY, NULL,
 		    buf, spufs_addr, sizeof buf);
     }
 
@@ -282,7 +277,7 @@ spu_multiarch_target::store_registers (struct regcache *regcache, int regno)
 	regcache->raw_collect (i, buf + i*16);
 
       xsnprintf (annex, sizeof annex, "%d/regs", spufs_fd);
-      target_write (ops_beneath, TARGET_OBJECT_SPU, annex,
+      target_write (beneath (), TARGET_OBJECT_SPU, annex,
 		    buf, 0, sizeof buf);
     }
 }
@@ -295,7 +290,7 @@ spu_multiarch_target::xfer_partial (enum target_object object,
 				    const gdb_byte *writebuf, ULONGEST offset, ULONGEST len,
 				    ULONGEST *xfered_len)
 {
-  struct target_ops *ops_beneath = find_target_beneath (this);
+  struct target_ops *ops_beneath = this->beneath ();
 
   /* Use the "mem" spufs file to access SPU local store.  */
   if (object == TARGET_OBJECT_MEMORY)
@@ -345,15 +340,13 @@ spu_multiarch_target::search_memory (CORE_ADDR start_addr, ULONGEST search_space
 				     const gdb_byte *pattern, ULONGEST pattern_len,
 				     CORE_ADDR *found_addrp)
 {
-  struct target_ops *ops_beneath = find_target_beneath (this);
-
   /* For SPU local store, always fall back to the simple method.  */
   if (SPUADDR_SPU (start_addr) >= 0)
     return simple_search_memory (this, start_addr, search_space_len,
 				 pattern, pattern_len, found_addrp);
 
-  return ops_beneath->search_memory (start_addr, search_space_len,
+  return beneath ()->search_memory (start_addr, search_space_len,
-				     pattern, pattern_len, found_addrp);
+				    pattern, pattern_len, found_addrp);
 }
 
 
@@ -410,9 +403,7 @@ spu_multiarch_solib_unloaded (struct so_list *so)
 void
 spu_multiarch_target::mourn_inferior ()
 {
-  struct target_ops *ops_beneath = find_target_beneath (this);
+  beneath ()->mourn_inferior ();
-
-  ops_beneath->mourn_inferior ();
   spu_multiarch_deactivate ();
 }
 

gdb/target.c

@@ -3211,16 +3211,6 @@ default_thread_architecture (struct target_ops *ops, ptid_t ptid)
   return inf->gdbarch;
 }
 
-/*
- * Find the next target down the stack from the specified target.
- */
-
-struct target_ops *
-find_target_beneath (struct target_ops *t)
-{
-  return t->beneath ();
-}
-
 /* See target.h.  */
 
 struct target_ops *

gdb/target.h

@@ -2377,8 +2377,6 @@ extern void noprocess (void) ATTRIBUTE_NORETURN;
 
 extern void target_require_runnable (void);
 
-extern struct target_ops *find_target_beneath (struct target_ops *);
-
 /* Find the target at STRATUM.  If no target is at that stratum,
    return NULL.  */