1 /* $NetBSD: fpsetsticky.c,v 1.5 2005/12/24 23:10:08 perry 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 1.5 2005/12/24 23:10:08 perry 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 21 fp_except 22 fpsetsticky(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