1 /* $NetBSD: fpsetsticky.c,v 1.1 2004/07/24 19:09:29 chs Exp $ */ 2 3 /* $OpenBSD: fpsetsticky.c,v 1.4 2004/01/05 06:06:16 otto Exp $ */ 4 5 /* 6 * Written by Miodrag Vallat. Public domain 7 */ 8 9 #include <sys/types.h> 10 #include <ieeefp.h> 11 12 fp_except 13 fpsetsticky(fp_except mask) 14 { 15 uint64_t fpsr; 16 fp_except old; 17 18 __asm__ __volatile__("fstd %%fr0,0(%1)" : "=m" (fpsr) : "r" (&fpsr)); 19 old = (fpsr >> 59) & 0x1f; 20 fpsr = (fpsr & 0x07ffffff00000000LL) | ((uint64_t)(mask & 0x1f) << 59); 21 __asm__ __volatile__("fldd 0(%0),%%fr0" : : "r" (&fpsr)); 22 return (old); 23 } 24