482704df27
We could have reused memmove.asm for ARM, but we would still need to add an implemention for ARM64, so we use the same source for both archs. Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org> Cc: Leif Lindholm <leif.lindholm@linaro.org> Signed-off-by: Pete Batard <pete@akeo.ie> Reviewed-by: Leif Lindholm <leif.lindholm@linaro.org>
35 lines
770 B
C
35 lines
770 B
C
//------------------------------------------------------------------------------
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//
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// Copyright (c) 2019, Pete Batard. All rights reserved.
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//
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// SPDX-License-Identifier: BSD-2-Clause-Patent
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//
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//------------------------------------------------------------------------------
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#if defined(_M_ARM64)
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typedef unsigned __int64 size_t;
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#else
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typedef unsigned __int32 size_t;
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#endif
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void* memmove(void *, const void *, size_t);
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#pragma intrinsic(memmove)
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#pragma function(memmove)
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void* memmove(void *dest, const void *src, size_t n)
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{
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unsigned char *d = dest;
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unsigned char const *s = src;
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if (d < s) {
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while (n--)
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*d++ = *s++;
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} else {
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d += n;
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s += n;
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while (n--)
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*--d = *--s;
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}
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return dest;
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}
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