From owner-freebsd-current  Wed May  5 11:19:25 1999
Delivered-To: freebsd-current@freebsd.org
Received: from godzilla.zeta.org.au (godzilla.zeta.org.au [203.26.10.9])
	by hub.freebsd.org (Postfix) with ESMTP id DC5FC15350
	for <current@FreeBSD.ORG>; Wed,  5 May 1999 11:19:18 -0700 (PDT)
	(envelope-from bde@godzilla.zeta.org.au)
Received: (from bde@localhost)
	by godzilla.zeta.org.au (8.8.7/8.8.7) id EAA23864;
	Thu, 6 May 1999 04:19:16 +1000
Date: Thu, 6 May 1999 04:19:16 +1000
From: Bruce Evans <bde@zeta.org.au>
Message-Id: <199905051819.EAA23864@godzilla.zeta.org.au>
To: current@FreeBSD.ORG, jb@cimlogic.com.au
Subject: Re: Math emulation is broken in sys/i386/isa/npx.c
Sender: owner-freebsd-current@FreeBSD.ORG
Precedence: bulk
X-Loop: FreeBSD.ORG

>Rev 1.67 of npx.c changed a #ifdef SMP to #ifdef 1, preventing the
>test for the hardware coprocessor. This breaks support for 386 processors
>without math coprocessors. Grrr.

It was also broken a month ago by changing TARGET_DEFAULT from
(MASK_NO_FANCY_MATH_387 | 0301) for gcc to 0301 for egcs.  This mainly
permits egcs to emit fsqrt instructions.   This can be worked around
by using the GPL'ed math emulator or rebuilding everything affected
with CFLAGS+=-fno-fancy-math-387.

Bruce


To Unsubscribe: send mail to majordomo@FreeBSD.org
with "unsubscribe freebsd-current" in the body of the message