5370f7380f
float, double and long double types. No post-increment tests yet. All tests are skipped if the debug.unaligned_test sysctl variable cannot be set to 1.
61 lines
1.9 KiB
C
61 lines
1.9 KiB
C
/*
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* Copyright (c) 2005 Marcel Moolenaar
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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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*
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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 ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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#include <string.h>
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struct {
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DATA_TYPE aligned;
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char _;
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char misaligned[sizeof(DATA_TYPE)];
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} data;
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int
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main()
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{
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DATA_TYPE *aligned = &data.aligned;
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DATA_TYPE *misaligned = (DATA_TYPE *)data.misaligned;
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DATA_TYPE value = DATA_VALUE;
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/* Set PSR.ac. */
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asm volatile("sum 8");
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#if defined(TEST_STORE)
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/* Misaligned store. */
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*misaligned = value;
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memcpy(aligned, misaligned, sizeof(DATA_TYPE));
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#elif defined(TEST_LOAD)
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memcpy(misaligned, &value, sizeof(DATA_TYPE));
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/* Misaligned load. */
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*aligned = *misaligned;
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#else
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#error Define TEST_LOAD or TEST_STORE
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#endif
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return (*aligned == value) ? 0 : 1;
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}
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