1 /* $NetBSD: crtfm.c,v 1.1 2013/08/05 13:38:35 matt Exp $ */ 2 3 /* 4 * Copyright (c) 2002 Wasabi Systems, Inc. 5 * All rights reserved. 6 * 7 * Written by Jason R. Thorpe for Wasabi Systems, Inc. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 3. All advertising materials mentioning features or use of this software 18 * must display the following acknowledgement: 19 * This product includes software developed for the NetBSD Project by 20 * Wasabi Systems, Inc. 21 * 4. The name of Wasabi Systems, Inc. may not be used to endorse 22 * or promote products derived from this software without specific prior 23 * written permission. 24 * 25 * THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND 26 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 27 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 28 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL WASABI SYSTEMS, INC 29 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 30 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 31 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 32 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 33 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 34 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 35 * POSSIBILITY OF SUCH DAMAGE. 36 */ 37 38 /* 39 * Support for the GCC "-ffast-math" option on the Alpha. 40 */ 41 42 #include <sys/types.h> 43 44 #include <machine/fpu.h> 45 #include <machine/sysarch.h> 46 47 /* 48 * Must provide this wrapper around sysarch(2) so that statically-linked 49 * programs work properly. 50 */ 51 52 extern void __alpha_sysarch(int, void *); 53 54 __asm(".ent __alpha_sysarch 0 ;\n" 55 "__alpha_sysarch: ;\n" 56 " ldiq $0, 165 ;\n" /* v0 = SYS_sysarch */ 57 " call_pal 0x0083 ;\n" /* PAL_OSF1_callsys */ 58 " ret $31,($26),1 ;\n" 59 ".end __alpha_sysarch"); 60 61 static void __attribute__((__constructor__)) 62 __alpha_set_fast_math(void) 63 { 64 struct alpha_fp_c_args args; 65 66 args.fp_c = IEEE_MAP_DMZ|IEEE_MAP_UMZ; 67 __alpha_sysarch(ALPHA_SET_FP_C, &args); 68 } 69