Date: Mon, 28 Dec 1998 15:58:21 -0600 From: "Richard Seaman, Jr." <dick@tar.com> To: Brian Feldman <green@unixhelp.org> Cc: Mike Smith <mike@smith.net.au>, emulation@FreeBSD.ORG Subject: Re: StarOffice 5.0? Message-ID: <19981228155821.C4581@tar.com> In-Reply-To: <Pine.BSF.4.05.9812281647220.1243-100000@janus.syracuse.net>; from Brian Feldman on Mon, Dec 28, 1998 at 04:50:08PM -0500 References: <199812282137.NAA12785@dingo.cdrom.com> <Pine.BSF.4.05.9812281647220.1243-100000@janus.syracuse.net>
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On Mon, Dec 28, 1998 at 04:50:08PM -0500, Brian Feldman wrote: > > This looks ominously like the linux_pipe patches have been spammed by > > something else. > > I see nothing referring to p->p_md.md_regs->tf_edx, so I see no reason why it > should have been saved. > > int reg_edx; > reg_edx = p->p_retval[1]; > p->p_retval[1] = reg_edx; > p->p_retval[1] = reg_edx; > It's saving the value, but what's it got to do with edx? p->p_retval[1] writes to edx when returning to user space. The FreeBSD pipe syscall writes to p->p_retval[1]. Linux glibc wraps the linux pipe syscall, and expects edx to be preserved when the pipe syscall returns. -- Richard Seamman, Jr. email: dick@tar.com 5182 N. Maple Lane phone: 414-367-5450 Chenequa WI 53058 fax: 414-367-5852 To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-emulation" in the body of the message
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