From owner-svn-src-projects@FreeBSD.ORG  Tue Mar 23 01:26:17 2010
Return-Path: <owner-svn-src-projects@FreeBSD.ORG>
Delivered-To: svn-src-projects@freebsd.org
Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34])
	by hub.freebsd.org (Postfix) with ESMTP id 95E1D106564A;
	Tue, 23 Mar 2010 01:26:17 +0000 (UTC)
	(envelope-from nwhitehorn@FreeBSD.org)
Received: from svn.freebsd.org (svn.freebsd.org [IPv6:2001:4f8:fff6::2c])
	by mx1.freebsd.org (Postfix) with ESMTP id 8487C8FC1E;
	Tue, 23 Mar 2010 01:26:17 +0000 (UTC)
Received: from svn.freebsd.org (localhost [127.0.0.1])
	by svn.freebsd.org (8.14.3/8.14.3) with ESMTP id o2N1QHkg001434;
	Tue, 23 Mar 2010 01:26:17 GMT
	(envelope-from nwhitehorn@svn.freebsd.org)
Received: (from nwhitehorn@localhost)
	by svn.freebsd.org (8.14.3/8.14.3/Submit) id o2N1QHoZ001432;
	Tue, 23 Mar 2010 01:26:17 GMT
	(envelope-from nwhitehorn@svn.freebsd.org)
Message-Id: <201003230126.o2N1QHoZ001432@svn.freebsd.org>
From: Nathan Whitehorn <nwhitehorn@FreeBSD.org>
Date: Tue, 23 Mar 2010 01:26:17 +0000 (UTC)
To: src-committers@freebsd.org, svn-src-projects@freebsd.org
X-SVN-Group: projects
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
Cc: 
Subject: svn commit: r205499 - projects/ppc64/sys/powerpc/powerpc
X-BeenThere: svn-src-projects@freebsd.org
X-Mailman-Version: 2.1.5
Precedence: list
List-Id: "SVN commit messages for the src &quot; projects&quot;
	tree" <svn-src-projects.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/svn-src-projects>, 
	<mailto:svn-src-projects-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/svn-src-projects>
List-Post: <mailto:svn-src-projects@freebsd.org>
List-Help: <mailto:svn-src-projects-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/svn-src-projects>, 
	<mailto:svn-src-projects-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Tue, 23 Mar 2010 01:26:17 -0000

Author: nwhitehorn
Date: Tue Mar 23 01:26:17 2010
New Revision: 205499
URL: http://svn.freebsd.org/changeset/base/205499

Log:
  Provide a useful comment.

Modified:
  projects/ppc64/sys/powerpc/powerpc/exec_machdep.c

Modified: projects/ppc64/sys/powerpc/powerpc/exec_machdep.c
==============================================================================
--- projects/ppc64/sys/powerpc/powerpc/exec_machdep.c	Tue Mar 23 01:24:23 2010	(r205498)
+++ projects/ppc64/sys/powerpc/powerpc/exec_machdep.c	Tue Mar 23 01:26:17 2010	(r205499)
@@ -890,7 +890,7 @@ cpu_set_syscall_retval(struct thread *td
 			tf->fixreg[FIRSTARG] = td->td_retval[0];
 			tf->fixreg[FIRSTARG + 1] = td->td_retval[1];
 		}
-		tf->cr &= ~0x10000000;		/* XXX: Magic number */
+		tf->cr &= ~0x10000000;		/* Unset summary overflow */
 		break;
 	case ERESTART:
 		/*
@@ -904,7 +904,7 @@ cpu_set_syscall_retval(struct thread *td
 			    p->p_sysent->sv_errtbl[error] : -1;
 		}
 		tf->fixreg[FIRSTARG] = error;
-		tf->cr |= 0x10000000;		/* XXX: Magic number */
+		tf->cr |= 0x10000000;		/* Set summary overflow */
 		break;
 	}
 }