Introduce target_{stop,continue}_ptid

This commit introduces two new functions to stop and restart target
processes that shared code can use and that clients must implement.
It also changes some shared code to use these functions.

gdb/ChangeLog:

	* target/target.h (target_stop_ptid, target_continue_ptid):
	Declare.
	* target.c (target_stop_ptid, target_continue_ptid): New
	functions.
	* common/agent.c [!GDBSERVER]: Don't include infrun.h.
	(agent_run_command): Always use target_stop_ptid and
	target_continue_ptid.

gdb/gdbserver/ChangeLog:

	* target.c (target_stop_ptid, target_continue_ptid): New
	functions.

1 files changed, 25 insertions, 0 deletions

diff --git a/gdb/target.c b/gdb/target.c
index 711e7cb..339b1d1 100644
--- a/gdb/target.c
+++ b/gdb/target.c
@@ -3027,6 +3027,31 @@ target_stop (ptid_t ptid)
   (*current_target.to_stop) (&current_target, ptid);
 }
 
+/* See target/target.h.  */
+
+void
+target_stop_ptid (ptid_t ptid)
+{
+  struct target_waitstatus status;
+  int was_non_stop = non_stop;
+
+  non_stop = 1;
+  target_stop (ptid);
+
+  memset (&status, 0, sizeof (status));
+  target_wait (ptid, &status, 0);
+
+  non_stop = was_non_stop;
+}
+
+/* See target/target.h.  */
+
+void
+target_continue_ptid (ptid_t ptid)
+{
+  target_resume (ptid, 0, GDB_SIGNAL_0);
+}
+
 /* Concatenate ELEM to LIST, a comma separate list, and return the
    result.  The LIST incoming argument is released.  */