1*c2ff854cSchristos /* $NetBSD: fpsetmask.c,v 1.6 2012/03/21 00:38:34 christos Exp $ */ 24e067afcSperry 3a0c13050Sjtc /* 4a0c13050Sjtc * Written by J.T. Conklin, Apr 10, 1995 5a0c13050Sjtc * Public domain. 6a0c13050Sjtc */ 7a0c13050Sjtc 85d3e8294Sthorpej #include <sys/cdefs.h> 988c3eadbSlukem #if defined(LIBC_SCCS) && !defined(lint) 10*c2ff854cSchristos __RCSID("$NetBSD: fpsetmask.c,v 1.6 2012/03/21 00:38:34 christos Exp $"); 1188c3eadbSlukem #endif /* LIBC_SCCS and not lint */ 125d3e8294Sthorpej 135d3e8294Sthorpej #include "namespace.h" 145d3e8294Sthorpej 15a0c13050Sjtc #include <ieeefp.h> 16a0c13050Sjtc 175d3e8294Sthorpej #ifdef __weak_alias __weak_alias(fpsetmask,_fpsetmask)185d3e8294Sthorpej__weak_alias(fpsetmask,_fpsetmask) 195d3e8294Sthorpej #endif 205d3e8294Sthorpej 21a0c13050Sjtc fp_except 22*c2ff854cSchristos fpsetmask(fp_except mask) 23a0c13050Sjtc { 24a0c13050Sjtc fp_except old; 25a0c13050Sjtc fp_except new; 26a0c13050Sjtc 27ce666bb8Sperry __asm("st %%fsr,%0" : "=m" (*&old)); 28a0c13050Sjtc 29a0c13050Sjtc new = old; 30a0c13050Sjtc new &= ~(0x1f << 23); 31a0c13050Sjtc new |= ((mask & 0x1f) << 23); 32a0c13050Sjtc 33ce666bb8Sperry __asm("ld %0,%%fsr" : : "m" (*&new)); 34a0c13050Sjtc 35a0c13050Sjtc return (old >> 23) & 0x1f; 36a0c13050Sjtc } 37