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From: David Xu <davidxu@FreeBSD.org>
To: Perforce Change Reviews <perforce@freebsd.org>
Subject: PERFORCE change 57761 for review
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http://perforce.freebsd.org/chv.cgi?CH=57761

Change 57761 by davidxu@davidxu_celeron on 2004/07/20 05:55:12

	If step > 1, turn on TMDF_NOUPCALL to hard bind the thread, debugger
	should know what it is doing.

Affected files ...

.. //depot/projects/davidxu_ksedbg/src/lib/libthread_db/pthread/pthread_db.c#11 edit

Differences ...

==== //depot/projects/davidxu_ksedbg/src/lib/libthread_db/pthread/pthread_db.c#11 (text+ko) ====

@@ -935,6 +935,12 @@
 
 	/* Clear or set single step flag in thread mailbox */
 	tmp = step ? TMDF_SSTEP : 0;
+	/*
+	 * Debug not only wants to step the thread, but also wants to
+	 * single step it.
+	 */
+	if (step > 1)
+		tmp |= TMDF_NOUPCALL;
 	ret = ps_pwrite(ta->ph, tcb_addr + offsetof(struct tcb,
 	                 tcb_tmbx.tm_dflags), &tmp, sizeof(tmp));
 	if (ret != 0)