gdb/testsuite: gdb.base/args.exp: add KFAIL for native-extended-gdbserver

[binutils-gdb.git] / gdb / process-stratum-target.c

diff --git a/gdb/process-stratum-target.c b/gdb/process-stratum-target.c
index e2e8d6c4ff73a44ae6cd2007c5391dce8339d6a5..c851090a7f2ea23913cb9e9d15360015f73a2a4c 100644 (file)
--- a/gdb/process-stratum-target.c
+++ b/gdb/process-stratum-target.c
@@ -1,6 +1,6 @@
 /* Abstract base class inherited by all process_stratum targets
 
-   Copyright (C) 2018-2019 Free Software Foundation, Inc.
+   Copyright (C) 2018-2021 Free Software Foundation, Inc.
 
    This file is part of GDB.
 
@@ -29,13 +29,13 @@ struct address_space *
 process_stratum_target::thread_address_space (ptid_t ptid)
 {
   /* Fall-back to the "main" address space of the inferior.  */
-  inferior *inf = find_inferior_ptid (ptid);
+  inferior *inf = find_inferior_ptid (this, ptid);
 
   if (inf == NULL || inf->aspace == NULL)
     internal_error (__FILE__, __LINE__,
                    _("Can't determine the current "
                      "address space of thread %s\n"),
-                   target_pid_to_str (ptid));
+                   target_pid_to_str (ptid).c_str ());
 
   return inf->aspace;
 }
@@ -43,7 +43,7 @@ process_stratum_target::thread_address_space (ptid_t ptid)
 struct gdbarch *
 process_stratum_target::thread_architecture (ptid_t ptid)
 {
-  inferior *inf = find_inferior_ptid (ptid);
+  inferior *inf = find_inferior_ptid (this, ptid);
   gdb_assert (inf != NULL);
   return inf->gdbarch;
 }
@@ -77,9 +77,54 @@ process_stratum_target::has_registers ()
 }
 
 bool
-process_stratum_target::has_execution (ptid_t the_ptid)
+process_stratum_target::has_execution (inferior *inf)
 {
-  /* If there's no thread selected, then we can't make it run through
-     hoops.  */
-  return the_ptid != null_ptid;
+  /* If there's a process running already, we can't make it run
+     through hoops.  */
+  return inf->pid != 0;
+}
+
+void
+process_stratum_target::follow_exec (inferior *follow_inf, ptid_t ptid,
+                                    const char *execd_pathname)
+{
+  inferior *orig_inf = current_inferior ();
+
+  if (orig_inf != follow_inf)
+    {
+      /* Execution continues in a new inferior, push the original inferior's
+         process target on the new inferior's target stack.  The process target
+        may decide to unpush itself from the original inferior's target stack
+        after that, at its discretion.  */
+      follow_inf->push_target (orig_inf->process_target ());
+      thread_info *t = add_thread (follow_inf->process_target (), ptid);
+
+      /* Leave the new inferior / thread as the current inferior / thread.  */
+      switch_to_thread (t);
+    }
+}
+
+/* See process-stratum-target.h.  */
+
+std::set<process_stratum_target *>
+all_non_exited_process_targets ()
+{
+  /* Inferiors may share targets.  To eliminate duplicates, use a set.  */
+  std::set<process_stratum_target *> targets;
+  for (inferior *inf : all_non_exited_inferiors ())
+    targets.insert (inf->process_target ());
+
+  return targets;
+}
+
+/* See process-stratum-target.h.  */
+
+void
+switch_to_target_no_thread (process_stratum_target *target)
+{
+  for (inferior *inf : all_inferiors (target))
+    {
+      switch_to_inferior_no_thread (inf);
+      break;
+    }
 }