1/* $NetBSD: fpsetsticky.c,v 1.10 2017/02/27 06:55:26 chs 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 1.10 2017/02/27 06:55:26 chs 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(fp_except sticky) 23{ 24 fp_except old; 25 fp_except new; 26 27 __asm(".set push; .set noat; cfc1 %0,$31; .set pop" : "=r" (old)); 28 29 new = old & ~(0x1f << 2); 30 new |= (sticky & 0x1f) << 2; 31 32 __asm(".set push; .set noat; ctc1 %0,$31; .set pop" : : "r" (new)); 33 34 return (old >> 2) & 0x1f; 35} 36