Add parametrized version of s390_inferior_tid

In the next patches, we'll want to use this function with a ptid other
than inferior_ptid, so I add it with a separate patch to keep things
clean.

gdb/ChangeLog:

	* s390-linux-nat.c (s390_inferior_tid): Add overload with ptid
	parameter.

diff --git a/gdb/s390-linux-nat.c b/gdb/s390-linux-nat.c
index 2b205df9de89a6d0cb79219815b1f120c6b10028..3544588de6b54166abe1c4b61c1b103aeb483c7c 100644 (file)
--- a/gdb/s390-linux-nat.c
+++ b/gdb/s390-linux-nat.c
@@ -214,18 +214,26 @@ fill_fpregset (const struct regcache *regcache, fpregset_t *regp, int regno)
                           sizeof (fpregset_t));
 }
 
-/* Find the TID for the current inferior thread to use with ptrace.  */
+/* Find the TID for the inferior thread corresponding to PTID to use with
+   ptrace.  */
 static int
-s390_inferior_tid (void)
+s390_inferior_tid (ptid_t ptid)
 {
   /* GNU/Linux LWP ID's are process ID's.  */
-  int tid = ptid_get_lwp (inferior_ptid);
+  int tid = ptid_get_lwp (ptid);
   if (tid == 0)
-    tid = ptid_get_pid (inferior_ptid); /* Not a threaded program.  */
+    tid = ptid_get_pid (ptid); /* Not a threaded program.  */
 
   return tid;
 }
 
+/* Find the TID for the current inferior thread to use with ptrace.  */
+static int
+s390_inferior_tid (void)
+{
+  return s390_inferior_tid (inferior_ptid);
+}
+
 /* Fetch all general-purpose registers from process/thread TID and
    store their values in GDB's register cache.  */
 static void