gdb: add inferior parameter to breakpoint_init_inferior

By inspection, I believe that breakpoint_init_inferior doesn't call
anything that relies on the current program space or inferior.  So,
add an inferior parameter, to make the current inferior / program space
references bubble up one level.

Change-Id: Ib07b7a6d360e324f6ae1aa502dd314b8cce421b7
Approved-By: Andrew Burgess <aburgess@redhat.com>

gdb/breakpoint.c

@@ -4226,33 +4226,21 @@ mark_breakpoints_out (program_space *pspace)
       bl->inserted = 0;
 }
 
-/* Clear the "inserted" flag in all breakpoints and delete any
-   breakpoints which should go away between runs of the program.
-
-   Plus other such housekeeping that has to be done for breakpoints
-   between runs.
-
-   Note: this function gets called at the end of a run (by
-   generic_mourn_inferior) and when a run begins (by
-   init_wait_for_inferior).  */
-
-
+/* See breakpoint.h.  */
 
 void
-breakpoint_init_inferior (enum inf_context context)
+breakpoint_init_inferior (inferior *inf, inf_context context)
 {
-  struct program_space *pspace = current_program_space;
-
   /* If breakpoint locations are shared across processes, then there's
      nothing to do.  */
-  if (gdbarch_has_global_breakpoints (current_inferior ()->arch ()))
+  if (gdbarch_has_global_breakpoints (inf->arch ()))
     return;
 
-  mark_breakpoints_out (pspace);
+  mark_breakpoints_out (inf->pspace);
 
   for (breakpoint &b : all_breakpoints_safe ())
     {
-      if (b.has_locations () && b.first_loc ().pspace != pspace)
+      if (b.has_locations () && b.first_loc ().pspace != inf->pspace)
 	continue;
 
       switch (b.type)

gdb/breakpoint.h

@@ -1515,7 +1515,17 @@ extern struct breakpoint *clone_momentary_breakpoint (struct breakpoint *bpkt);
 
 extern void set_ignore_count (int, int, int);
 
-extern void breakpoint_init_inferior (enum inf_context);
+/* Clear the "inserted" flag in all breakpoint locations of INF's program space
+   and delete any breakpoints which should go away between runs of the program.
+
+   Plus other such housekeeping that has to be done for breakpoints
+   between runs.
+
+   Note: this function gets called at the end of a run (by
+   generic_mourn_inferior) and when a run begins (by
+   init_wait_for_inferior).  */
+
+extern void breakpoint_init_inferior (inferior *inf, inf_context context);
 
 extern void breakpoint_auto_delete (bpstat *);
 

gdb/infcmd.c

@@ -2824,14 +2824,14 @@ detach_command (const char *args, int from_tty)
   /* Hold a strong reference to the target while (maybe)
      detaching the parent.  Otherwise detaching could close the
      target.  */
-  auto target_ref
-    = target_ops_ref::new_reference (current_inferior ()->process_target ());
+  inferior *inf = current_inferior ();
+  auto target_ref = target_ops_ref::new_reference (inf->process_target ());
 
   /* Save this before detaching, since detaching may unpush the
      process_stratum target.  */
   bool was_non_stop_p = target_is_non_stop_p ();
 
-  target_detach (current_inferior (), from_tty);
+  target_detach (inf, from_tty);
 
   update_previous_thread ();
 
@@ -2840,11 +2840,11 @@ detach_command (const char *args, int from_tty)
      this within target_detach because that is also used when
      following child forks, and in that case we will want to transfer
      breakpoints to the child, not delete them.  */
-  breakpoint_init_inferior (inf_exited);
+  breakpoint_init_inferior (inf, inf_exited);
 
   /* If the solist is global across inferiors, don't clear it when we
      detach from a single inferior.  */
-  if (!gdbarch_has_global_solist (current_inferior ()->arch ()))
+  if (!gdbarch_has_global_solist (inf->arch ()))
     no_shared_libraries (nullptr, from_tty);
 
   if (deprecated_detach_hook)

gdb/infrun.c

@@ -1297,7 +1297,7 @@ follow_exec (ptid_t ptid, const char *exec_file_target)
   /* We've followed the inferior through an exec.  Therefore, the
      inferior has essentially been killed & reborn.  */
 
-  breakpoint_init_inferior (inf_execd);
+  breakpoint_init_inferior (current_inferior (), inf_execd);
 
   gdb::unique_xmalloc_ptr<char> exec_file_host
     = exec_file_find (exec_file_target, nullptr);
@@ -3819,7 +3819,7 @@ init_wait_for_inferior (void)
 {
   /* These are meaningless until the first time through wait_for_inferior.  */
 
-  breakpoint_init_inferior (inf_starting);
+  breakpoint_init_inferior (current_inferior (), inf_starting);
 
   clear_proceed_status (0);
 

gdb/target.c

@@ -3636,7 +3636,7 @@ generic_mourn_inferior (void)
   /* Note this wipes step-resume breakpoints, so needs to be done
      after exit_inferior, which ends up referencing the step-resume
      breakpoints through clear_thread_inferior_resources.  */
-  breakpoint_init_inferior (inf_exited);
+  breakpoint_init_inferior (inf, inf_exited);
 
   registers_changed ();