1 /* $NetBSD: fpsetsticky.c,v 1.3 2002/01/13 21:45:46 thorpej Exp $ */ 2 3 /* 4 * Written by J.T. Conklin, Apr 11, 1995 5 * Public domain. 6 */ 7 8 #include <sys/cdefs.h> 9 10 #include "namespace.h" 11 12 #include <ieeefp.h> 13 14 #ifdef __weak_alias 15 __weak_alias(fpsetsticky,_fpsetsticky) 16 #endif 17 18 fp_except 19 fpsetsticky(sticky) 20 fp_except sticky; 21 { 22 fp_except old; 23 fp_except new; 24 25 __asm__("cfc1 %0,$31" : "=r" (old)); 26 27 new = old; 28 new &= ~(0x1f << 2); 29 new |= ((sticky & 0x1f) << 2); 30 31 __asm__("ctc1 %0,$31" : : "r" (new)); 32 33 return (old >> 2) & 0x1f; 34 } 35