[PATCH 1/5] Factor out in-stepping-range checks.

[Pedro Alves <palves@redhat.com>]

This adds a function for doing within-thread's-stepping-range checks, and converts
a couple spots to use it.  Following patches will add more uses.

v3:

 - macro -> function, and rename it.

gdb/
2013-05-09  Yao Qi  <yao@codesourcery.com>
	    Pedro Alves  <palves@redhat.com>

	* gdbthread.h (pc_in_thread_step_range): New declaration.
	* thread.c (pc_in_thread_step_range): New function.
	* infrun.c (handle_inferior_event): Use it.
---
 gdb/gdbthread.h |    4 ++++
 gdb/infrun.c    |    6 ++----
 gdb/thread.c    |    7 +++++++
 3 files changed, 13 insertions(+), 4 deletions(-)

diff --git a/gdb/gdbthread.h b/gdb/gdbthread.h
index 0846322..a9f8a94 100644
--- a/gdb/gdbthread.h
+++ b/gdb/gdbthread.h
@@ -399,6 +399,10 @@ extern struct thread_info* inferior_thread (void);
 
 extern void update_thread_list (void);
 
+/* Return true if PC is in the stepping range of THREAD.  */
+
+int pc_in_thread_step_range (CORE_ADDR pc, struct thread_info *thread);
+
 extern struct thread_info *thread_list;
 
 #endif /* GDBTHREAD_H */
diff --git a/gdb/infrun.c b/gdb/infrun.c
index 54e92f2..57c427d 100644
--- a/gdb/infrun.c
+++ b/gdb/infrun.c
@@ -4337,8 +4337,7 @@ process_event_stop_test:
 
       if (ecs->event_thread->control.step_range_end != 0
 	  && ecs->event_thread->suspend.stop_signal != GDB_SIGNAL_0
-	  && (ecs->event_thread->control.step_range_start <= stop_pc
-	      && stop_pc < ecs->event_thread->control.step_range_end)
+	  && pc_in_thread_step_range (stop_pc, ecs->event_thread)
 	  && frame_id_eq (get_stack_frame_id (frame),
 			  ecs->event_thread->control.step_stack_frame_id)
 	  && ecs->event_thread->control.step_resume_breakpoint == NULL)
@@ -4707,8 +4706,7 @@ process_event_stop_test:
      through a function epilogue and therefore must detect when
      the current-frame changes in the middle of a line.  */
 
-  if (stop_pc >= ecs->event_thread->control.step_range_start
-      && stop_pc < ecs->event_thread->control.step_range_end
+  if (pc_in_thread_step_range (stop_pc, ecs->event_thread)
       && (execution_direction != EXEC_REVERSE
 	  || frame_id_eq (get_frame_id (frame),
 			  ecs->event_thread->control.step_frame_id)))
diff --git a/gdb/thread.c b/gdb/thread.c
index 2a1d723..2eb506b 100644
--- a/gdb/thread.c
+++ b/gdb/thread.c
@@ -750,6 +750,13 @@ finish_thread_state_cleanup (void *arg)
   finish_thread_state (*ptid_p);
 }
 
+int
+pc_in_thread_step_range (CORE_ADDR pc, struct thread_info *thread)
+{
+  return (pc >= thread->control.step_range_start
+	  && pc < thread->control.step_range_end);
+}
+
 /* Prints the list of threads and their details on UIOUT.
    This is a version of 'info_threads_command' suitable for
    use from MI.