gdb: remove push_target free functions

Same as the previous patch, but for the push_target functions.

The implementation of the move variant is moved to a new overload of
inferior::push_target.

gdb/ChangeLog:

	* target.h (push_target): Remove, update callers to use
	inferior::push_target.
	* target.c (push_target): Remove.
	* inferior.h (class inferior) <push_target>: New overload.

Change-Id: I5a95496666278b8f3965e5e8aecb76f54a97c185

30 files changed, 54 insertions, 61 deletions

diff --git a/gdb/ChangeLog b/gdb/ChangeLog
index 7396237..274e157 100644
--- a/gdb/ChangeLog
+++ b/gdb/ChangeLog
@@ -1,5 +1,12 @@
 2021-03-23  Simon Marchi  <simon.marchi@polymtl.ca>
 
+	* target.h (push_target): Remove, update callers to use
+	inferior::push_target.
+	* target.c (push_target): Remove.
+	* inferior.h (class inferior) <push_target>: New overload.
+
+2021-03-23  Simon Marchi  <simon.marchi@polymtl.ca>
+
 	* target.h (unpush_target): Remove, update all callers
 	to use `inferior::unpush_target` instead.
 	(struct target_unpusher) <operator()>: Just declare.
diff --git a/gdb/aix-thread.c b/gdb/aix-thread.c
index a479d01..fc34210 100644
--- a/gdb/aix-thread.c
+++ b/gdb/aix-thread.c
@@ -974,7 +974,7 @@ pd_enable (void)
     return;
 
   /* Prepare for thread debugging.  */
-  push_target (&aix_thread_ops);
+  current_inferior ()->push_target (&aix_thread_ops);
   pd_able = 1;
 
   /* If we're debugging a core file or an attached inferior, the
diff --git a/gdb/bsd-kvm.c b/gdb/bsd-kvm.c
index 17db2fe..89da40a 100644
--- a/gdb/bsd-kvm.c
+++ b/gdb/bsd-kvm.c
@@ -134,7 +134,7 @@ bsd_kvm_target_open (const char *arg, int from_tty)
   bsd_kvm_corefile = filename;
   current_inferior ()->unpush_target (&bsd_kvm_ops);
   core_kd = temp_kd;
-  push_target (&bsd_kvm_ops);
+  current_inferior ()->push_target (&bsd_kvm_ops);
 
   thread_info *thr = add_thread_silent (&bsd_kvm_ops, bsd_kvm_ptid);
   switch_to_thread (thr);
diff --git a/gdb/bsd-uthread.c b/gdb/bsd-uthread.c
index 2ee47bf..3cb8f64 100644
--- a/gdb/bsd-uthread.c
+++ b/gdb/bsd-uthread.c
@@ -231,7 +231,7 @@ bsd_uthread_activate (struct objfile *objfile)
   bsd_uthread_thread_ctx_offset =
     bsd_uthread_lookup_offset ("_thread_ctx_offset", objfile);
 
-  push_target (&bsd_uthread_ops);
+  current_inferior ()->push_target (&bsd_uthread_ops);
   bsd_uthread_active = 1;
   return 1;
 }
diff --git a/gdb/corelow.c b/gdb/corelow.c
index a4c1f63..a1943ab 100644
--- a/gdb/corelow.c
+++ b/gdb/corelow.c
@@ -458,7 +458,7 @@ core_target_open (const char *arg, int from_tty)
   if (!current_program_space->exec_bfd ())
     set_gdbarch_from_file (core_bfd);
 
-  push_target (std::move (target_holder));
+  current_inferior ()->push_target (std::move (target_holder));
 
   switch_to_no_thread ();
 
diff --git a/gdb/darwin-nat.c b/gdb/darwin-nat.c
index ca95d7b..f8e4443 100644
--- a/gdb/darwin-nat.c
+++ b/gdb/darwin-nat.c
@@ -1659,7 +1659,7 @@ darwin_attach_pid (struct inferior *inf)
 
   target_ops *darwin_ops = get_native_target ();
   if (!target_is_pushed (darwin_ops))
-    push_target (darwin_ops);
+    inf->push_target (darwin_ops);
 }
 
 /* Get the thread_info object corresponding to this darwin_thread_info.  */
diff --git a/gdb/exec.c b/gdb/exec.c
index bcc54bd..b737bcf 100644
--- a/gdb/exec.c
+++ b/gdb/exec.c
@@ -616,7 +616,7 @@ program_space::add_target_sections (void *owner,
 	    continue;
 
 	  switch_to_inferior_no_thread (inf);
-	  push_target (&exec_ops);
+	  inf->push_target (&exec_ops);
 	}
     }
 }
@@ -682,7 +682,7 @@ void
 exec_on_vfork ()
 {
   if (!current_program_space->target_sections ().empty ())
-    push_target (&exec_ops);
+    current_inferior ()->push_target (&exec_ops);
 }
 
 
diff --git a/gdb/gnu-nat.c b/gdb/gnu-nat.c
index 409d141..9ea4c40 100644
--- a/gdb/gnu-nat.c
+++ b/gdb/gnu-nat.c
@@ -2114,7 +2114,7 @@ gnu_nat_target::create_inferior (const char *exec_file,
   inf_debug (inf, "creating inferior");
 
   if (!target_is_pushed (this))
-    push_target (this);
+    current_inferior ()->push_target (this);
 
   pid = fork_inferior (exec_file, allargs, env, gnu_ptrace_me,
 		       NULL, NULL, NULL, NULL);
@@ -2190,9 +2190,9 @@ gnu_nat_target::attach (const char *args, int from_tty)
 
   inf_attach (inf, pid);
 
-  push_target (this);
-
   inferior = current_inferior ();
+  inferior->push_target (this);
+
   inferior_appeared (inferior, pid);
   inferior->attach_flag = 1;
 
diff --git a/gdb/go32-nat.c b/gdb/go32-nat.c
index b18a62e..79c31fc 100644
--- a/gdb/go32-nat.c
+++ b/gdb/go32-nat.c
@@ -757,7 +757,7 @@ go32_nat_target::create_inferior (const char *exec_file,
   inferior_appeared (inf, SOME_PID);
 
   if (!target_is_pushed (this))
-    push_target (this);
+    inf->push_target (this);
 
   thread_info *thr = add_thread_silent (ptid_t (SOME_PID));
   switch_to_thread (thr);
diff --git a/gdb/inf-child.c b/gdb/inf-child.c
index b8bc2e2..0e68a40 100644
--- a/gdb/inf-child.c
+++ b/gdb/inf-child.c
@@ -166,7 +166,7 @@ inf_child_open_target (const char *arg, int from_tty)
   gdb_assert (dynamic_cast<inf_child_target *> (target) != NULL);
 
   target_preopen (from_tty);
-  push_target (target);
+  current_inferior ()->push_target (target);
   inf_child_explicitly_opened = 1;
   if (from_tty)
     printf_filtered ("Done.  Use the \"run\" command to start a process.\n");
diff --git a/gdb/inf-ptrace.c b/gdb/inf-ptrace.c
index 7ca02df..e630ba44 100644
--- a/gdb/inf-ptrace.c
+++ b/gdb/inf-ptrace.c
@@ -82,7 +82,7 @@ inf_ptrace_target::create_inferior (const char *exec_file,
   if (! ops_already_pushed)
     {
       /* Clear possible core file with its process_stratum.  */
-      push_target (this);
+      current_inferior ()->push_target (this);
       unpusher.reset (this);
     }
 
@@ -139,12 +139,14 @@ inf_ptrace_target::attach (const char *args, int from_tty)
   if (pid == getpid ())		/* Trying to masturbate?  */
     error (_("I refuse to debug myself!"));
 
+  inf = current_inferior ();
+
   target_unpush_up unpusher;
   if (! ops_already_pushed)
     {
       /* target_pid_to_str already uses the target.  Also clear possible core
 	 file with its process_stratum.  */
-      push_target (this);
+      inf->push_target (this);
       unpusher.reset (this);
     }
 
@@ -169,7 +171,6 @@ inf_ptrace_target::attach (const char *args, int from_tty)
   error (_("This system does not support attaching to a process"));
 #endif
 
-  inf = current_inferior ();
   inferior_appeared (inf, pid);
   inf->attach_flag = 1;
 
diff --git a/gdb/inferior.c b/gdb/inferior.c
index 49f869a..69baee3 100644
--- a/gdb/inferior.c
+++ b/gdb/inferior.c
@@ -771,7 +771,7 @@ switch_to_inferior_and_push_target (inferior *new_inf,
   /* Reuse the target for new inferior.  */
   if (!no_connection && proc_target != NULL)
     {
-      push_target (proc_target);
+      new_inf->push_target (proc_target);
       if (proc_target->connection_string () != NULL)
 	printf_filtered (_("Added inferior %d on connection %d (%s %s)\n"),
 			 new_inf->num,
diff --git a/gdb/inferior.h b/gdb/inferior.h
index b8d5ff9..66fc180 100644
--- a/gdb/inferior.h
+++ b/gdb/inferior.h
@@ -352,6 +352,13 @@ public:
   void push_target (struct target_ops *t)
   { m_target_stack.push (t); }
 
+  /* An overload that deletes the target on failure.  */
+  void push_target (target_ops_up &&t)
+  {
+    m_target_stack.push (t.get ());
+    t.release ();
+  }
+
   /* Unpush T from this inferior's target stack.  */
   int unpush_target (struct target_ops *t)
   { return m_target_stack.unpush (t); }
diff --git a/gdb/infrun.c b/gdb/infrun.c
index 3b65a6d..50340e6 100644
--- a/gdb/infrun.c
+++ b/gdb/infrun.c
@@ -477,7 +477,7 @@ holding the child stopped.  Try \"set detach-on-fork\" or \
 	  set_current_inferior (child_inf);
 	  switch_to_no_thread ();
 	  child_inf->symfile_flags = SYMFILE_NO_READ;
-	  push_target (parent_inf->process_target ());
+	  child_inf->push_target (parent_inf->process_target ());
 	  thread_info *child_thr
 	    = add_thread_silent (child_inf->process_target (), child_ptid);
 
@@ -627,7 +627,7 @@ holding the child stopped.  Try \"set detach-on-fork\" or \
 	   informing the solib layer about this new process.  */
 
 	set_current_inferior (child_inf);
-	push_target (target);
+	child_inf->push_target (target);
       }
 
       thread_info *child_thr = add_thread_silent (target, child_ptid);
@@ -1183,7 +1183,7 @@ follow_exec (ptid_t ptid, const char *exec_file_target)
 
       inferior *org_inferior = current_inferior ();
       switch_to_inferior_no_thread (inf);
-      push_target (org_inferior->process_target ());
+      inf->push_target (org_inferior->process_target ());
       thread_info *thr = add_thread (inf->process_target (), ptid);
       switch_to_thread (thr);
     }
diff --git a/gdb/linux-thread-db.c b/gdb/linux-thread-db.c
index 3a3d3de..de8687e 100644
--- a/gdb/linux-thread-db.c
+++ b/gdb/linux-thread-db.c
@@ -944,7 +944,7 @@ try_thread_db_load_1 (struct thread_db_info *info)
 
   /* The thread library was detected.  Activate the thread_db target
      for this process.  */
-  push_target (&the_thread_db_target);
+  current_inferior ()->push_target (&the_thread_db_target);
   return true;
 }
 
diff --git a/gdb/nto-procfs.c b/gdb/nto-procfs.c
index 021230a..b74392f 100644
--- a/gdb/nto-procfs.c
+++ b/gdb/nto-procfs.c
@@ -718,7 +718,7 @@ nto_procfs_target::attach (const char *args, int from_tty)
   inf->attach_flag = 1;
 
   if (!target_is_pushed (ops))
-    push_target (ops);
+    inf->push_target (ops);
 
   update_thread_list ();
 
@@ -1319,7 +1319,7 @@ nto_procfs_target::create_inferior (const char *exec_file,
 	 errn, safe_strerror(errn) ); */
     }
   if (!target_is_pushed (ops))
-    push_target (ops);
+    inf->push_target (ops);
   target_terminal::init ();
 
   if (current_program_space->exec_bfd () != NULL
diff --git a/gdb/procfs.c b/gdb/procfs.c
index cab29c3..b376809 100644
--- a/gdb/procfs.c
+++ b/gdb/procfs.c
@@ -1771,7 +1771,7 @@ procfs_target::attach (const char *args, int from_tty)
   target_unpush_up unpusher;
   if (!target_is_pushed (this))
     {
-      push_target (this);
+      current_inferior ()->push_target (this);
       unpusher.reset (this);
     }
 
@@ -2863,7 +2863,7 @@ procfs_target::create_inferior (const char *exec_file,
     }
 
   if (!target_is_pushed (this))
-    push_target (this);
+    current_inferior ()->push_target (this);
 
   pid = fork_inferior (exec_file, allargs, env, procfs_set_exec_trap,
 		       NULL, procfs_pre_trace, shell_file, NULL);
diff --git a/gdb/ravenscar-thread.c b/gdb/ravenscar-thread.c
index 63aa1d1..1398d1b 100644
--- a/gdb/ravenscar-thread.c
+++ b/gdb/ravenscar-thread.c
@@ -674,7 +674,7 @@ ravenscar_inferior_created (inferior *inf)
     }
 
   ravenscar_thread_target *rtarget = new ravenscar_thread_target ();
-  push_target (target_ops_up (rtarget));
+  inf->push_target (target_ops_up (rtarget));
   thread_info *thr = rtarget->add_active_thread ();
   if (thr != nullptr)
     switch_to_thread (thr);
diff --git a/gdb/record-btrace.c b/gdb/record-btrace.c
index 1a0cac2..b7b3c91 100644
--- a/gdb/record-btrace.c
+++ b/gdb/record-btrace.c
@@ -337,7 +337,7 @@ record_btrace_push_target (void)
 
   record_btrace_auto_enable ();
 
-  push_target (&record_btrace_ops);
+  current_inferior ()->push_target (&record_btrace_ops);
 
   record_btrace_async_inferior_event_handler
     = create_async_event_handler (record_btrace_handle_async_inferior_event,
diff --git a/gdb/record-full.c b/gdb/record-full.c
index 59e4410..8310b7b 100644
--- a/gdb/record-full.c
+++ b/gdb/record-full.c
@@ -924,7 +924,7 @@ record_full_core_open_1 (const char *name, int from_tty)
 
   record_full_core_sections = build_section_table (core_bfd);
 
-  push_target (&record_full_core_ops);
+  current_inferior ()->push_target (&record_full_core_ops);
   record_full_restore ();
 }
 
@@ -947,7 +947,7 @@ record_full_open_1 (const char *name, int from_tty)
     error (_("Process record: the current architecture doesn't support "
 	     "record function."));
 
-  push_target (&record_full_ops);
+  current_inferior ()->push_target (&record_full_ops);
 }
 
 static void record_full_init_record_breakpoints (void);
diff --git a/gdb/regcache.c b/gdb/regcache.c
index 27c0ae5..a419a21 100644
--- a/gdb/regcache.c
+++ b/gdb/regcache.c
@@ -1925,7 +1925,7 @@ cooked_write_test (struct gdbarch *gdbarch)
 
   /* Push the process_stratum target so we can mock accessing
      registers.  */
-  push_target (&mock_target);
+  current_inferior ()->push_target (&mock_target);
 
   /* Pop it again on exit (return/exception).  */
   struct on_exit
diff --git a/gdb/remote-sim.c b/gdb/remote-sim.c
index f72bbd2..1746b626 100644
--- a/gdb/remote-sim.c
+++ b/gdb/remote-sim.c
@@ -763,7 +763,7 @@ gdbsim_target_open (const char *args, int from_tty)
 
   sim_data->gdbsim_desc = gdbsim_desc;
 
-  push_target (&gdbsim_ops);
+  current_inferior ()->push_target (&gdbsim_ops);
   printf_filtered ("Connected to the simulator.\n");
 
   /* There's nothing running after "target sim" or "load"; not until
diff --git a/gdb/remote.c b/gdb/remote.c
index ae15f41..a7f3539 100644
--- a/gdb/remote.c
+++ b/gdb/remote.c
@@ -2474,7 +2474,7 @@ remote_target::remote_add_inferior (bool fake_pid_p, int pid, int attached,
 	  inf = add_inferior_with_spaces ();
 	}
       switch_to_inferior_no_thread (inf);
-      push_target (this);
+      inf->push_target (this);
       inferior_appeared (inf, pid);
     }
 
@@ -5673,7 +5673,7 @@ remote_target::open_1 (const char *name, int from_tty, int extended_p)
     }
 
   /* Switch to using the remote target now.  */
-  push_target (std::move (target_holder));
+  current_inferior ()->push_target (std::move (target_holder));
 
   /* Register extra event sources in the event loop.  */
   rs->remote_async_inferior_event_token
diff --git a/gdb/scoped-mock-context.h b/gdb/scoped-mock-context.h
index 8332e46..8d295ba 100644
--- a/gdb/scoped-mock-context.h
+++ b/gdb/scoped-mock-context.h
@@ -64,7 +64,7 @@ struct scoped_mock_context
     /* Push the process_stratum target so we can mock accessing
        registers.  */
     gdb_assert (mock_target.stratum () == process_stratum);
-    push_target (&mock_target);
+    mock_inferior.push_target (&mock_target);
 
     /* Switch to the mock thread.  */
     switch_to_thread (&mock_thread);
diff --git a/gdb/sol-thread.c b/gdb/sol-thread.c
index 1458185..825f691 100644
--- a/gdb/sol-thread.c
+++ b/gdb/sol-thread.c
@@ -641,7 +641,7 @@ check_for_thread_db (void)
       printf_unfiltered (_("[Thread debugging using libthread_db enabled]\n"));
 
       /* The thread library was detected.  Activate the sol_thread target.  */
-      push_target (&sol_thread_ops);
+      current_inferior ()->push_target (&sol_thread_ops);
       sol_thread_active = 1;
 
       main_ph.ptid = inferior_ptid; /* Save for xfer_memory.  */
diff --git a/gdb/target.c b/gdb/target.c
index 236aded..fe97312 100644
--- a/gdb/target.c
+++ b/gdb/target.c
@@ -158,7 +158,7 @@ static void
 set_targetdebug  (const char *args, int from_tty, struct cmd_list_element *c)
 {
   if (targetdebug)
-    push_target (the_debug_target);
+    current_inferior ()->push_target (the_debug_target);
   else
     current_inferior ()->unpush_target (the_debug_target);
 }
@@ -572,23 +572,6 @@ target_stack::push (target_ops *t)
 
 /* See target.h.  */
 
-void
-push_target (struct target_ops *t)
-{
-  current_inferior ()->push_target (t);
-}
-
-/* See target.h.  */
-
-void
-push_target (target_ops_up &&t)
-{
-  current_inferior ()->push_target (t.get ());
-  t.release ();
-}
-
-/* See target.h.  */
-
 bool
 target_stack::unpush (target_ops *t)
 {
diff --git a/gdb/target.h b/gdb/target.h
index 3a64094..1830d3a 100644
--- a/gdb/target.h
+++ b/gdb/target.h
@@ -2385,11 +2385,6 @@ extern void add_target (const target_info &info,
 extern void add_deprecated_target_alias (const target_info &info,
 					 const char *alias);
 
-extern void push_target (struct target_ops *);
-
-/* An overload that deletes the target on failure.  */
-extern void push_target (target_ops_up &&);
-
 /* A unique_ptr helper to unpush a target.  */
 
 struct target_unpusher
diff --git a/gdb/tracectf.c b/gdb/tracectf.c
index 38c327d..4a245ee 100644
--- a/gdb/tracectf.c
+++ b/gdb/tracectf.c
@@ -1165,7 +1165,7 @@ ctf_target_open (const char *dirname, int from_tty)
   gdb_assert (start_pos->type == BT_SEEK_RESTORE);
 
   trace_dirname = xstrdup (dirname);
-  push_target (&ctf_ops);
+  current_inferior ()->push_target (&ctf_ops);
 
   inferior_appeared (current_inferior (), CTF_PID);
 
diff --git a/gdb/tracefile-tfile.c b/gdb/tracefile-tfile.c
index ea70364..d82cac8 100644
--- a/gdb/tracefile-tfile.c
+++ b/gdb/tracefile-tfile.c
@@ -498,7 +498,7 @@ tfile_target_open (const char *arg, int from_tty)
 	&& (startswith (header + 1, "TRACE0\n"))))
     error (_("File is not a valid trace file."));
 
-  push_target (&tfile_ops);
+  current_inferior ()->push_target (&tfile_ops);
 
   trace_regblock_size = 0;
   ts = current_trace_status ();
diff --git a/gdb/windows-nat.c b/gdb/windows-nat.c
index c8275fc..5166289 100644
--- a/gdb/windows-nat.c
+++ b/gdb/windows-nat.c
@@ -2027,8 +2027,9 @@ windows_nat_target::do_initial_windows_stuff (DWORD pid, bool attaching)
 #endif
   current_event.dwProcessId = pid;
   memset (&current_event, 0, sizeof (current_event));
+  inf = current_inferior ();
   if (!target_is_pushed (this))
-    push_target (this);
+    inf->push_target (this);
   disable_breakpoints_in_shlibs ();
   windows_clear_solib ();
   clear_proceed_status (0);
@@ -2049,7 +2050,6 @@ windows_nat_target::do_initial_windows_stuff (DWORD pid, bool attaching)
       windows_set_segment_register_p (i386_windows_segment_register_p);
     }
 
-  inf = current_inferior ();
   inferior_appeared (inf, pid);
   inf->attach_flag = attaching;