Subject: pkg/34615: TME sun3 emulator incorrectly emulates FNEG M68K instruction
To: None <pkg-manager@netbsd.org, gnats-admin@netbsd.org,>
From: None <sigmfsk@aol.com>
List: pkgsrc-bugs
Date: 09/25/2006 21:20:00
>Number: 34615
>Category: pkg
>Synopsis: TME sun3 emulator incorrectly emulates FNEG M68K instruction
>Confidential: no
>Severity: non-critical
>Priority: low
>Responsible: pkg-manager
>State: open
>Class: sw-bug
>Submitter-Id: net
>Arrival-Date: Mon Sep 25 21:20:00 +0000 2006
>Originator: Arthur Townsend
>Release: 3.0
>Organization:
>Environment:
3.0 for i386
>Description:
TME calcultes the negative of VAL by calculating (0 - VAL), which normally works, but fails when VAL is 0.0. On a real Sun3, the FNEG of 0.0 is -0.0. This can be seen by running the gcc-3.3.3 testsuite gcc.dg/mzero3.c.
>How-To-Repeat:
gcc mzero3.c
./a.out
>Fix:
change TME's method of calculating FNEG.
change ieee754-ops-auto.sh, line 252, from: