1 /* $NetBSD: fpsetmask.c,v 1.2 2002/01/13 21:45:50 thorpej Exp $ */ 2 3 /* 4 * Written by J.T. Conklin, Apr 10, 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(fpsetmask,_fpsetmask) 16 #endif 17 18 fp_except 19 fpsetmask(mask) 20 fp_except mask; 21 { 22 fp_except old; 23 fp_except new; 24 25 __asm__("st %%fsr,%0" : "=m" (*&old)); 26 27 new = old; 28 new &= ~(0x1f << 23); 29 new |= ((mask & 0x1f) << 23); 30 31 __asm__("ld %0,%%fsr" : : "m" (*&new)); 32 33 return (old >> 23) & 0x1f; 34 } 35