Step over clone syscall w/ breakpoint, TARGET_WAITKIND_THREAD_CLONED

[binutils-gdb.git] / gdb / target / waitstatus.h

diff --git a/gdb/target/waitstatus.h b/gdb/target/waitstatus.h
index 4d23f1cbff4ae753c57903e533c8a9c4f7f6ab71..3d3a0cf9d02a2da585998ecef7daf842f95664d8 100644 (file)
--- a/gdb/target/waitstatus.h
+++ b/gdb/target/waitstatus.h
@@ -95,6 +95,13 @@ enum target_waitkind
   /* There are no resumed children left in the program.  */
   TARGET_WAITKIND_NO_RESUMED,
 
+  /* The thread was cloned.  The event's ptid corresponds to the
+     cloned parent.  The cloned child is held stopped at its entry
+     point, and its ptid is in the event's m_child_ptid.  The target
+     must not add the cloned child to GDB's thread list until
+     target_ops::follow_clone() is called.  */
+  TARGET_WAITKIND_THREAD_CLONED,
+
   /* The thread was created.  */
   TARGET_WAITKIND_THREAD_CREATED,
 
@@ -102,6 +109,17 @@ enum target_waitkind
   TARGET_WAITKIND_THREAD_EXITED,
 };
 
+/* Determine if KIND represents an event with a new child - a fork,
+   vfork, or clone.  */
+
+static inline bool
+is_new_child_status (target_waitkind kind)
+{
+  return (kind == TARGET_WAITKIND_FORKED
+         || kind == TARGET_WAITKIND_VFORKED
+         || kind == TARGET_WAITKIND_THREAD_CLONED);
+}
+
 /* Return KIND as a string.  */
 
 static inline const char *
@@ -125,6 +143,8 @@ DIAGNOSTIC_ERROR_SWITCH
       return "FORKED";
     case TARGET_WAITKIND_VFORKED:
       return "VFORKED";
+    case TARGET_WAITKIND_THREAD_CLONED:
+      return "THREAD_CLONED";
     case TARGET_WAITKIND_EXECD:
       return "EXECD";
     case TARGET_WAITKIND_VFORK_DONE:
@@ -325,6 +345,14 @@ struct target_waitstatus
     return *this;
   }
 
+  target_waitstatus &set_thread_cloned (ptid_t child_ptid)
+  {
+    this->reset ();
+    m_kind = TARGET_WAITKIND_THREAD_CLONED;
+    m_value.child_ptid = child_ptid;
+    return *this;
+  }
+
   target_waitstatus &set_thread_created ()
   {
     this->reset ();
@@ -369,8 +397,7 @@ struct target_waitstatus
 
   ptid_t child_ptid () const
   {
-    gdb_assert (m_kind == TARGET_WAITKIND_FORKED
-               || m_kind == TARGET_WAITKIND_VFORKED);
+    gdb_assert (is_new_child_status (m_kind));
     return m_value.child_ptid;
   }