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72be1dead4
This patch cleans up the auto configury mechanism used to select different implementations of memcpy for various architecture versions. The approach here is to remove the selection of memcpy within automake and instead use complimentary logic in memcpy-stub.c and memcpy.S to choose between the generic memcpy.c implemenation or one of the architecture specific memcpy*.S implemenations. Regressed for armv7-a armv5 armv8-a, correct selection of memcpy implementation by manual inspection of a test program built for these three architectures. This revised patch flips the remaining preprocessor logic in memcpy-stub.c to use ACLE defines as requested in the previous review and removes the now disused HAVE_ARMV7A and HAVE_ARMV8A configure.in support.
42 lines
2.0 KiB
C
42 lines
2.0 KiB
C
/* Copyright (c) 2015 ARM Ltd.
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All rights reserved.
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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 are met:
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* 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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* 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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* Neither the name of the Linaro nor the
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names of its contributors may be used to endorse or promote products
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derived from this software without specific prior written permission.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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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
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OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */
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/* The structure of the following #if #else #endif conditional chain
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must match the chain in memcpy.S. */
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#include "acle-compat.h"
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#if (defined (__OPTIMIZE_SIZE__) || defined (PREFER_SIZE_OVER_SPEED))
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# include "../../string/memcpy.c"
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#elif (__ARM_ARCH >= 7 && __ARM_ARCH_PROFILE == 'A' \
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&& defined (__ARM_FEATURE_UNALIGNED))
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/* Defined in memcpy.S. */
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#elif __ARM_ARCH >= 7 && __ARM_ARCH_PROFILE == 'M'
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/* Defined in memcpy.S. */
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#else
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# include "../../string/memcpy.c"
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#endif
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