6ce4e876a7
Add support for handling floating point disabled traps mostly in userland for the simple single threaded case. Not yet enabled by default. Implement __sparc_utrap_install as specified by the sparc abi.
60 lines
2.1 KiB
C
60 lines
2.1 KiB
C
/*-
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* Copyright (c) 2001 Jake Burkholder.
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* All rights reserved.
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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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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <sys/types.h>
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#include <machine/utrap.h>
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#include <machine/sysarch.h>
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#include <stdlib.h>
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#include "__sparc_utrap_private.h"
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static const struct sparc_utrap_args ua[] = {
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{ UT_FP_DISABLED, __sparc_utrap_fp_disabled, NULL, NULL, NULL },
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#if 0
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{ UT_FP_EXCEPTION_IEEE_754, __sparc_utrap_gen, NULL, NULL, NULL },
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{ UT_FP_EXCEPTION_OTHER, __sparc_utrap_gen, NULL, NULL, NULL },
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{ UT_ILLEGAL_INSTRUCTION, __sparc_utrap_gen, NULL, NULL, NULL },
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{ UT_MEM_ADDRESS_NOT_ALIGNED, __sparc_utrap_gen, NULL, NULL, NULL },
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#endif
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{ UT_TRAP_INSTRUCTION_16, __sparc_utrap_gen, NULL, NULL, NULL },
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};
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static const struct sparc_utrap_install_args uia[] = {
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sizeof (ua) / sizeof (*ua), ua
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};
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void
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__sparc_utrap_setup(void)
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{
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sysarch(SPARC_UTRAP_INSTALL, &uia);
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}
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