1 /* $OpenBSD: fpsetmask.c,v 1.1 2001/08/29 01:34:56 art Exp $ */ 2 3 /* 4 * Written by J.T. Conklin, Apr 10, 1995 5 * Public domain. 6 */ 7 8 #include <ieeefp.h> 9 10 fp_except 11 fpsetmask(mask) 12 fp_except mask; 13 { 14 fp_except old; 15 fp_except new; 16 17 __asm__("st %%fsr,%0" : "=m" (*&old)); 18 19 new = old; 20 new &= ~(0x1f << 23); 21 new |= ((mask & 0x1f) << 23); 22 23 __asm__("ld %0,%%fsr" : : "m" (*&new)); 24 25 return (old >> 23) & 0x1f; 26 } 27