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From: Wolfgang Solfrank <ws@sun-lamp.cs.berkeley.edu>

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To: source-changes@sun-lamp.cs.berkeley.edu

Fix bogus fcom emulations
How did any program with floating point emulation ever work?
This commit is contained in:
Nate Williams 1994-01-29 22:07:16 +00:00
parent ec40982451
commit 8c0f699c14
1 changed files with 3 additions and 6 deletions
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9
sys/i386/i386/math_emulate.c
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@ -6,7 +6,7 @@
* [expediant "port" of linux 8087 emulator to 386BSD, with apologies -wfj]
*
* from: 386BSD 0.1
* $Id: math_emulate.c,v 1.5 1993/11/25 01:30:57 wollman Exp $
* $Id: math_emulate.c,v 1.6 1993/12/19 00:50:05 wollman Exp $
*/
/*
@ -33,7 +33,6 @@
* The other files also don't care about ST(x) etc - they just get addresses
* to 80-bit temporary reals, and do with them as they please. I wanted to
* hide most of the 387-specific things here.
*
*/
#include "machine/cpu.h"
@ -208,12 +207,10 @@ math_emulate(struct trapframe * info)
real_to_real(&tmp,&ST(0));
return(0);
case 0x1a:
fcom(PST(code & 7),&tmp);
real_to_real(&tmp,&ST(0));
fcom(PST(code & 7),PST(0));
return(0);
case 0x1b:
fcom(PST(code & 7),&tmp);
real_to_real(&tmp,&ST(0));
fcom(PST(code & 7),PST(0));
fpop();
return(0);
case 0x1c: