69 lines
2.5 KiB
C
69 lines
2.5 KiB
C
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/* $NetBSD: crtfm.c,v 1.1 2013/08/05 13:38:35 matt Exp $ */
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/*
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* Copyright (c) 2002 Wasabi Systems, Inc.
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* All rights reserved.
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*
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* Written by Jason R. Thorpe for Wasabi Systems, Inc.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed for the NetBSD Project by
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* Wasabi Systems, Inc.
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* 4. The name of Wasabi Systems, Inc. may not be used to endorse
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* or promote products derived from this software without specific prior
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* written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL WASABI SYSTEMS, INC
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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/*
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* Support for the GCC "-ffast-math" option on the Alpha.
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*/
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#include <sys/types.h>
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#include <machine/fpu.h>
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#include <machine/sysarch.h>
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/*
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* Must provide this wrapper around sysarch(2) so that statically-linked
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* programs work properly.
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*/
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extern void __alpha_sysarch(int, void *);
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__asm(".ent __alpha_sysarch 0 ;\n"
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"__alpha_sysarch: ;\n"
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" ldiq $0, 165 ;\n" /* v0 = SYS_sysarch */
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" call_pal 0x0083 ;\n" /* PAL_OSF1_callsys */
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" ret $31,($26),1 ;\n"
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".end __alpha_sysarch");
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static void __attribute__((__constructor__))
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__alpha_set_fast_math(void)
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{
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struct alpha_fp_c_args args;
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args.fp_c = IEEE_MAP_DMZ|IEEE_MAP_UMZ;
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__alpha_sysarch(ALPHA_SET_FP_C, &args);
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}
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