1/* $NetBSD: fpsetsticky.c,v 1.4 2005/06/12 05:21:26 lukem Exp $ */ 2 3/* 4 * Written by J.T. Conklin, Apr 11, 1995 5 * Public domain. 6 */ 7 8#include <sys/cdefs.h> 9#if defined(LIBC_SCCS) && !defined(lint) 10__RCSID("$NetBSD: fpsetsticky.c,v 1.4 2005/06/12 05:21:26 lukem Exp $"); 11#endif /* LIBC_SCCS and not lint */ 12 13#include "namespace.h" 14 15#include <ieeefp.h> 16 17#ifdef __weak_alias 18__weak_alias(fpsetsticky,_fpsetsticky) 19#endif 20 21fp_except 22fpsetsticky(sticky) 23 fp_except sticky; 24{ 25 fp_except old; 26 fp_except new; 27 28 __asm("cfc1 %0,$31" : "=r" (old)); 29 30 new = old; 31 new &= ~(0x1f << 2); 32 new |= ((sticky & 0x1f) << 2); 33 34 __asm("ctc1 %0,$31" : : "r" (new)); 35 36 return (old >> 2) & 0x1f; 37} 38