Re: pkg/34691: TME sun3 emulator sometimes incorrectly performs fmove.x

[SigmFSK%aol.com@localhost]

The following reply was made to PR pkg/34691; it has been noted by GNATS.

From: SigmFSK%aol.com@localhost
To: gnats-bugs%NetBSD.org@localhost
Cc: 
Subject: Re: pkg/34691: TME sun3 emulator sometimes incorrectly performs fmove.x
Date: Wed, 11 Oct 2006 18:22:01 EDT

 TME also has a problem with fmove.d.
  
 The following code, taken from gcc-3.2.3 testsuite 980709-1.c passes on a  
 real sun3 with NetBSD 3.0/gcc-3.3.3 and SunOS 4.1.1/gcc-3.2.3. 
 But it always  aborts under TME running SunOS 4.1.1/gcc-3.2.3, and sometimes 
 aborts under TME  running NetBSD 3.0/gcc-3.3.3. 
 
 #include <math.h> 
 
 main()  
 { 
 volatile double a; 
 double c; 
 a = 32.0;  
 c = pow(a, 1.0/3.0); 
 if (!(c - 0.1 < 3.174802))  abort(); 
 } 
 
 Under SunOS 4.1.1, the actual problem is TME fails to put  a value in fp6 
 with the following instruction inside the "pow" routine:  
 fmove.d      (08,a6), fp6
  
 The executable sometimes passed under NetBSD 3.0/gcc-3.3.3.  I didn't  dig 
 into it enough to determine why it sometimes passed - fixing the general  
 fmove.d and fmove.x problem would likely clear it up  though.