gdb: remove arguments from inferior_created observable

I noticed that non of the listeners of the inferior_created observable
used either of the arguments.  Remove them.  This in turn allows
removing the target parameter of post_create_inferior.

Tested only by rebuilding.

gdb/ChangeLog:

	* observable.h <inferior_created>: Remove parameters.  Update all
	listeners.
	* inferior.h (post_create_inferior): Remove target parameter.
	Update all callers.

Change-Id: I8944cefdc4447ed5347dc927b75abf1e7a0e27e6

gdb/ChangeLog

@@ -1,3 +1,10 @@
+2020-10-02  Simon Marchi  <simon.marchi@polymtl.ca>
+
+	* observable.h <inferior_created>: Remove parameters.  Update all
+	listeners.
+	* inferior.h (post_create_inferior): Remove target parameter.
+	Update all callers.
+
 2020-10-02  Nitika Achra  <Nitika.Achra@amd.com>
 
 	* dwarf2/macro.c (dwarf_decode_macro_bytes): Handle DW_MACRO_define_strx

gdb/bsd-uthread.c

@@ -263,7 +263,7 @@ bsd_uthread_deactivate (void)
 }
 
 static void
-bsd_uthread_inferior_created (struct target_ops *ops, int from_tty)
+bsd_uthread_inferior_created ()
 {
   bsd_uthread_activate (NULL);
 }

gdb/corelow.c

@@ -516,7 +516,7 @@ core_target_open (const char *arg, int from_tty)
   if (exec_bfd == nullptr)
     locate_exec_from_corefile_build_id (core_bfd, from_tty);
 
-  post_create_inferior (target, from_tty);
+  post_create_inferior (from_tty);
 
   /* Now go through the target stack looking for threads since there
      may be a thread_stratum target loaded on top of target core by

gdb/dummy-frame.c

@@ -273,7 +273,7 @@ find_dummy_frame_dtor (dummy_frame_dtor_ftype *dtor, void *dtor_data)
    them up at least once whenever we start a new inferior.  */
 
 static void
-cleanup_dummy_frames (struct target_ops *target, int from_tty)
+cleanup_dummy_frames ()
 {
   while (dummy_frame_stack != NULL)
     remove_dummy_frame (&dummy_frame_stack);

gdb/infcmd.c

@@ -279,7 +279,7 @@ strip_bg_char (const char *args, int *bg_char_p)
    should be stopped.  */
 
 void
-post_create_inferior (struct target_ops *target, int from_tty)
+post_create_inferior (int from_tty)
 {
 
   /* Be sure we own the terminal in case write operations are performed.  */ 
@@ -347,7 +347,7 @@ post_create_inferior (struct target_ops *target, int from_tty)
      if the now pushed target supports hardware watchpoints.  */
   breakpoint_re_set ();
 
-  gdb::observers::inferior_created.notify (target, from_tty);
+  gdb::observers::inferior_created.notify ();
 }
 
 /* Kill the inferior if already running.  This function is designed
@@ -520,7 +520,7 @@ run_command_1 (const char *args, int from_tty, enum run_how run_how)
 
   /* Pass zero for FROM_TTY, because at this point the "run" command
      has done its thing; now we are setting up the running program.  */
-  post_create_inferior (current_top_target (), 0);
+  post_create_inferior (0);
 
   /* Queue a pending event so that the program stops immediately.  */
   if (run_how == RUN_STOP_AT_FIRST_INSN)
@@ -2432,7 +2432,7 @@ setup_inferior (int from_tty)
   /* Take any necessary post-attaching actions for this platform.  */
   target_post_attach (inferior_ptid.pid ());
 
-  post_create_inferior (current_top_target (), from_tty);
+  post_create_inferior (from_tty);
 }
 
 /* What to do after the first program stops after attaching.  */

gdb/inferior.h

@@ -196,7 +196,7 @@ extern ptid_t gdb_startup_inferior (pid_t pid, int num_traps);
 
 extern void setup_inferior (int from_tty);
 
-extern void post_create_inferior (struct target_ops *, int);
+extern void post_create_inferior (int from_tty);
 
 extern void attach_command (const char *, int);
 

gdb/infrun.c

@@ -3185,7 +3185,7 @@ start_remote (int from_tty)
   /* Now that the inferior has stopped, do any bookkeeping like
      loading shared libraries.  We want to do this before normal_stop,
      so that the displayed frame is up to date.  */
-  post_create_inferior (current_top_target (), from_tty);
+  post_create_inferior (from_tty);
 
   normal_stop ();
 }

gdb/jit.c

@@ -1232,7 +1232,7 @@ jit_inferior_init (struct gdbarch *gdbarch)
 /* inferior_created observer.  */
 
 static void
-jit_inferior_created (struct target_ops *ops, int from_tty)
+jit_inferior_created ()
 {
   jit_inferior_created_hook ();
 }

gdb/linux-thread-db.c

@@ -1310,7 +1310,7 @@ check_pid_namespace_match (void)
    This handles the case of debugging statically linked executables.  */
 
 static void
-thread_db_inferior_created (struct target_ops *target, int from_tty)
+thread_db_inferior_created ()
 {
   check_pid_namespace_match ();
   check_for_thread_db ();

gdb/m68k-linux-tdep.c

@@ -211,7 +211,7 @@ struct m68k_linux_sigtramp_info
 static int target_is_uclinux;
 
 static void
-m68k_linux_inferior_created (struct target_ops *objfile, int from_tty)
+m68k_linux_inferior_created ()
 {
   /* Record that we will need to re-evaluate whether we are running on a
      uClinux or normal GNU/Linux target (see m68k_linux_get_sigtramp_info).  */

gdb/observable.h

@@ -87,8 +87,7 @@ extern observable<> executable_changed;
    instruction.  For 'attach' and 'core', gdb calls this observer
    immediately after connecting to the inferior, and before any
    information on the inferior has been printed.  */
-extern observable<struct target_ops */* target */,
+extern observable<> inferior_created;
-		  int /* from_tty */> inferior_created;
 
 /* The status of process record for inferior inferior in gdb has
    changed.  The process record is started if STARTED is true, and

gdb/ravenscar-thread.c

@@ -657,7 +657,7 @@ ravenscar_thread_target::xfer_partial (enum target_object object,
 /* Observer on inferior_created: push ravenscar thread stratum if needed.  */
 
 static void
-ravenscar_inferior_created (struct target_ops *target, int from_tty)
+ravenscar_inferior_created ()
 {
   const char *err_msg;
 

gdb/symfile-mem.c

@@ -157,7 +157,7 @@ add_symbol_file_from_memory_command (const char *args, int from_tty)
    This function is called via the inferior_created observer.  */
 
 static void
-add_vsyscall_page (struct target_ops *target, int from_tty)
+add_vsyscall_page ()
 {
   struct mem_range vsyscall_range;
 

gdb/tracectf.c

@@ -1175,7 +1175,7 @@ ctf_target_open (const char *dirname, int from_tty)
   merge_uploaded_trace_state_variables (&uploaded_tsvs);
   merge_uploaded_tracepoints (&uploaded_tps);
 
-  post_create_inferior (&ctf_ops, from_tty);
+  post_create_inferior (from_tty);
 }
 
 /* This is the implementation of target_ops method to_close.  Destroy

gdb/tracefile-tfile.c

@@ -571,7 +571,7 @@ tfile_target_open (const char *arg, int from_tty)
 
   merge_uploaded_tracepoints (&uploaded_tps);
 
-  post_create_inferior (&tfile_ops, from_tty);
+  post_create_inferior (from_tty);
 }
 
 /* Interpret the given line from the definitions part of the trace